Method for adjusting chemical mechanical planarization speed

The invention discloses a method for adjusting the chemico-mechanical complanation speed rate, and comprises: automatically adjusting the position of a lapping liquid nozzle according to the requirements of a formulation; adjusting the position of the lapping liquid nozzle to move towards the center of a grinding disc when the grinding rate in the middle part of a silicon slice is required to be fast; and adjusting the position of the lapping liquid nozzle to move towards the periphery of the grinding disc when the grinding rate on the periphery of the silicon slice is required to be fast. The method changes the in-plane evenness of the grinding rate by changing the position of the lapping liquid nozzle. When the position of the lapping liquid nozzle is changed, the distribution of the lapping liquid on a grinding pad is changed therewith, and the in-plane distribution of the grinding rate is also changed correspondingly. Therefore, the ratio of the grinding rate of the middle to the periphery ...

Microcrystalline plate mirror gold screen-printing method

The invention discloses a microcrystalline plate mirror gold screen-printing method. The microcrystalline plate mirror gold screen-printing method comprises the following steps of 1, examining a microcrystalline plate to confirm no damaged parts, 2, making a template of mark content to be screen-printed, 3, fixing a screen on a corresponding workbench, 4, plating a microcrystalline plate mirror to be screen-printed on the screen, carrying out positioning according to the desired size and making a position mark, 5, screen-printing mirror gold ink on the microcrystalline plate, 6, putting the microcrystalline plate subjected to screen-printing into an oven and carrying out a baking process, 7, cooling the baked microcrystalline plate at a normal temperature to a room temperature, 8, coating the part of the mirror gold ink screen-printed microcrystalline plate with a transparent film, and carrying out secondary baking on the microcrystalline plate with the film, and 9, cooling the microcrystalline ...

Method for improving HCI effect of device

The invention provides a method for improving the HCI effect of a device, and the method comprises the steps: providing a substrate, and forming a grid electrode on the substrate; first side walls are formed on the two sides of the grid electrode; taking the grid electrode and the first side wall as masks, and performing source-drain ion implantation and annealing in the substrate; removing the first side wall by using a wet etching process; performing first LDD ion implantation in the substrate by taking the grid as a mask; forming second side walls with the thickness smaller than that of the first side walls on the two sides of the grid; and performing second LDD ion implantation and annealing in the substrate by taking the grid electrode and the second side wall as masks. Source and drain ion implantation and annealing are carried out before LDD ion implantation and annealing, the influence of a source and drain region annealing process on an LDD region is eliminated, the annealing thermal ...

Current collector, pole piece, electrode assembly, battery monomer, battery and electric equipment

The invention provides a current collector, a pole piece, an electrode assembly, a battery monomer, a battery and electric equipment, the current collector comprises a supporting layer and a conductive layer, the conductive layer is arranged on at least one side of the supporting layer along the thickness direction of the current collector, the elongation of the supporting layer is greater than that of the conductive layer, and the thickness of the conductive layer is greater than that of the supporting layer along the thickness direction of the current collector. The thickness of the support layer is greater than the total thickness of the conductive layer of the current collector. The elongation of the supporting layer is larger than that of the conducting layer, the thickness of the supporting layer of the current collector is larger than the total thickness of the conducting layer of the current collector, and under the condition that the thickness of the current collector is certain ...

Method for improving flatness in STI-CMP surface

The invention discloses a method for improving the flatness of STI-CMP plane, comprising that before chemical and mechanical grinding, first etching the oxide silicon on an active area, using grinding liquid to grind the surface of silicon slice until the surface of the silicon slice is flattened. The invention can obtain uniform oxide silicon and nitride silicon, with better isolation of grooves, even when the line width of semi-conductor is gradually reduced in the chemical and mechanical furnishing, of shallow groove isolation.

A movable contact piece subassembly for relay

The utility model provides a movable contact piece subassembly for relay, relates to the spare part field of relay. Movable contact piece cooperation on this a movable contact piece subassembly for relay, movable contact piece on each independent pull rod and another independent pull rod, this structure have been eliminated presently because the insulating axle slope problem that movable contact piece length nonconformity results in when setting up the movable contact piece respectively pull rod both sides. All have simultaneously through -hole and chamfered groove on every movable contact piece, messenger's through -hole becomes the weak link of movable contact reed, and the through -hole and the chamfered groove department of root top is transferred to to the root of the centrostigma trailing contact piece of atress when moving the movable contact piece, has reduced the probability of movable contact piece root emergence rupture.

Method for correcting CMP working technology condition

The present invention discloses method of correcting the technological conditions for CMP operation, and different technological conditions for CMP operation are selected based on different grinding rate trend parameter so as to control film thickness in the product in high film thickness homogeneity. The so-called grinding rate trend parameter is the ratio between the grinding rate in the central area of the silicon chip and that in some edge area.

Method for improving STI-CMP terminal detection

The present invention discloses a method for improving the STI-CMP end point detection, and includes STI-CMP earlier and later relative technology steps and end point detection steps, the STI-CMP earlier and later relative technology includes the steps in turn, such as deposition of silicon oxide, deposition of silicon nitride, STI groove etching, silicon oxide filling in, chemical and mechanical polishing, silicon nitride removing and silicon oxide removing, in the chemical and mechanical polishing step, the end point detection method is adopted to perform technological controlling, in the STI-CMP earlier relative technology, between the silicon nitride deposition step and the chemical mechanical polishing step, the processing steps for changing the silicon nitride surface performance are added. The present invention can clearly distinguish the interface between the silicon nitride and the silicon oxide in the subsequent chemical and mechanical polishing technology step, through the method ...

Pole piece, electrode assembly, battery monomer, battery and electric equipment

The invention provides a pole piece, an electrode assembly, a battery monomer, a battery and electric equipment. The pole piece comprises a current collector, the current collector comprises conducting layers and insulating layers, each conducting layer comprises a tab part, the conducting layers are arranged on the two opposite sides of each insulating layer in the thickness direction of the pole piece, each insulating layer comprises a first area and a second area, and at least one end of each first area is connected with the corresponding second area in the width direction of the pole piece. The thickness of the second region is smaller than that of the first region, and the tab parts are at least partially arranged in the second region, so that when each tab part of an electrode assembly formed by adopting the pole piece is welded, the tab parts on the two sides of the second region are easier to weld due to the smaller thickness of the second region, and the electric connection of ...

Method monitoring termination detecting state

The invention discloses a monitoring method of destination test situation, which adopts pre-generated polished section with same structure of products as testing plate. Before producing milling product needing terminal testing, adopts the terminal testing procedure to test the terminal of testing plate, thus achieving monitoring the terminal test is or not under the normal situation. The invention can test the milling terminal accurately and ensure the qualification rate of product. The invention not only can be used as the terminal test method using optics theory, but also can be used for monitoring terminal test method by temperature changes and current intensity.

Fixing ring and polishing head

The invention relates to a fixing ring used in a chemical mechanical polishing device. The chemical mechanical polishing device comprises a polishing disk and a polishing head. The polishing head comprises a chip carrier and the fixing ring, wherein the chip carrier is used for clamping a semiconductor chip, the polishing disk makes contact with the chip, and the polishing disk and the polishing head rotate in opposite directions respectively to polish the chip. The fixing ring comprises an annular base, at least one easy-to-break lead, an on-off state detection device and a signal processing device, wherein the annular base is arranged below the chip carrier, surrounds the side surface of the chip and is used for fixing the chip; the easy-to-break leads are fixed to the surface of the annular base, extend in the perimeter direction of the annular base and surround the annular base by one circle; the on-off state detection device is connected with all the easy-to-break leads respectively ...

Ultrasonic wave repairment dish and chemical mechanical polishing machine

The utility model discloses an ultrasonic wave repairment dish and chemical mechanical polishing machine belongs to semiconductor device manufacture technical field, be applicable to the chemical mechanical polishing machine on, the chemical mechanical polishing built -in is provided with the grinding pad, ultrasonic wave repairment dish includes: grind the arm, movably set up in the top of grinding pad, repairment dish body, set up in grind the arm one end and with the grinding pad contact, ultrasonator, set up in the grinding arm is connected the one end of repairment dish. Above -mentionedtechnical scheme's beneficial effect is: the ultrasonic generrator that has integrateed on the basis of traditional repairment dish is repairing the in -process, and when supersound on the repairmentdish conducts grinding pad surperficial, just more the efficient will cut piece, the grit in the lapping liquid of production and grind the accessory substance and drive from the porous surface of grinding ...

Method for monitoring termination detecting state

Method for correcting CMP working technology condition

High anti vibration relay electromagnetic system

The utility model provides a high anti vibration relay electromagnetic system, it is poor that has solved the electromagnetic system's of traditional gravity type railway signal relay resistance to shock, is receiving under the interference such as great vibration or big impact force, and the technical problem that the iron core was hit to the mistake easily takes place for armature. Its technical essential is: armature is provided with spring return mechanism, and spring return mechanism is: be fixed with the screw rod that has from lock nut on the yoke, the screw rod cover is equipped with the outer spring, and the outer spring connects at terminal surface under lock nut through the fixed caping of spring, has a circular recess of central through hole in the setting of armature upper segment, the screw rod runs through the central through hole of armature, and the crimping of outer spring lower extreme is in in the recess of armature. Utilize the confining force and armature self gravity ...

Wheel type carrier limiting device

The invention discloses a wheel type carrier limiting device, and belongs to the technical field of industrial transfer carriers. The wheel type carrier limiting device comprises a track carrier plate, a track is arranged on the track carrier plate, a connecting rod device is arranged in a track groove and comprises a movable limiting piece and a track connecting plate, one end of the movable limiting piece is elastically hinged to the track end, and the other end of the movable limiting piece is elastically hinged to the track connecting plate; the movable limiting piece can sink into a clamping groove, the track connecting plate is driven by the movable limiting piece to move in the direction of a front wheel, and a rear wheel clamping groove is formed by the tail end of the track connecting plate and the track. The connecting rod device is arranged in the track, the mode that a movable limiting block and the track connecting plate cover the clamping grooves above the track positions ...

Method for avoiding arc discharge during etching of top metal layer

The invention provides a method for avoiding arc discharge during etching of a top metal layer, and the method comprises the steps: S1, providing a substrate, and sequentially forming a dielectric layer and a photoresist layer on the substrate; s2, when photoetching is carried out on the photoresist layer to form a top layer through hole pattern, an area, where a cut corner is formed, on the wafer is not exposed; s3, etching the dielectric layer, and forming a top layer through hole in the dielectric layer; and S4, after the top layer through hole is filled with metal, a top layer metal layer is formed on the substrate. In the step S2, the photoresist layer on the area where the corner cut is formed on the wafer is not exposed, and in the step S3, when a top-layer through hole is not formed in the dielectric layer in the area and a top-layer metal layer is etched to form a liner layer, charged etching gas is not in contact with charges in the wafer, so that arc discharge is avoided.

Miniaturized binary differential relay

The invention relates to a miniaturized binary differential relay, which is characterized by comprising a base (1), an outer cover (2), a magnetic circuit unit and a contact unit (17), the magnetic circuit unit comprises a first magnetic circuit (15) and a second magnetic circuit (16), the first magnetic circuit (15) and the second magnetic circuit (16) are respectively arranged at the lower end of the base (1) in parallel, an armature (13) and the contact unit (17) are arranged at the upper end of the base (1), the armature (13) and a yoke (14) form an L-shaped magnetic circuit with a knife edge, and the outer cover (2) is arranged on the outer cover (2). The two sides of the L-shaped armature (13) are adjacent to the magnetic circuit unit, and the upper end of the L-shaped armature (13) is in magnetic dynamic connection with the contact unit (17). The miniaturized binary differential relay is small in size and light in weight, and can meet various technical indexes at present.

Intelligent electronic guardrail system

The invention discloses an intelligent electronic guardrail system. The intelligent electronic guardrail system comprises an induction device arranged at the periphery of a power maintenance area, wherein the induction device transmits an induction signal to a master control circuit through a wireless module I; the master control circuit comprises a master control circuit board, and a wireless module II, a sound-light alarm circuit, a serial port conversion circuit and a relay control circuit which are connected to the master control circuit board. By adopting the technical scheme, an intelligent control circuit for an AVR (Automatic Voltage Regulation) single-chip microcomputer, a zigbee wireless transmission circuit, an infrared correlation alarm and the like are organically combined together so as to form a portable perimeter anti-theft alarm system, which has advanced functions, practicability, no rewiring, convenience, no electromagnetic pollution and environmental friendliness; through ...

Rectifier relay magnetic circuit excitation device and method

The invention relates to a rectifier relay magnetic circuit excitation device and method. The rectifier relay magnetic circuit excitation device is characterized by comprising an iron core (1), a first coil (2), a diode (3), a second coil (4), a clamp spring (5), an armature (6) and a nut kit (7), the first coil (2), the second coil (4) and the yoke are sequentially sleeved on the iron core (1), and the pole face of the yoke and the pole face of the iron core (1) are tightly attached and fastened; the armature (6) is mounted on the yoke blade, and the blade of the armature (6) is attached to the yoke blade and limited by the clamp spring (5); and a coil winding of the second coil (4) is directly connected with a power line. According to the device and the method for magnetic circuit excitation of the rectification relay, under the conditions of power frequency alternating current power supply and no rectification element, the magnetic circuit of the relay can reliably excite and work, and ...

Relay armature limit structure

The utility model provides a relay armature limit structure, the problem that solve is: process having armature stop device now, wasted a large amount of manpower and materials, the utility model discloses a technical essential is: the armature one end of relay is provided with a back non -magnetic shim, back non -magnetic shim is rank ladder shape structure, and its one end is perfectly round, and the other end is the armature installation end, and the armature installation end is provided with friction portion. The beneficial effects of the utility model are that: replaced time and to have ended the chip architecture, improved relay production efficiency, changed the structure of relay release position locating part, saved the space. The utility model discloses still has simple structure, simple installation, characteristics such as reliability height.

Method for improving STI-CMP terminal detection

Method for improving homogeneity of oxidation film CMP

Method for improving relaxation of epitaxial process

The invention provides a method for improving relaxation of an epitaxial process, and the method comprises the steps: providing a substrate, and forming an epitaxial layer on the substrate; the forming process of the epitaxial layer comprises the following steps: using SiH4 gas as a first silicon source gas, and using SiH2Cl2 gas as a second silicon source gas; the temperature and the pressure are adjusted, so that the SiH2Cl2 gas is decomposed into silicon gas and hydrogen chloride, and the SiH4 gas is decomposed into silicon gas and hydrogen. According to the invention, the epitaxial layer is formed by using the non-selective germanium-silicon process, so that the concentration of Ge in the epitaxial layer is not affected while relaxation is improved and a process pressure window is improved.

Grinding disk device

The invention provides a grinding disk device applied in a chemical and mechanical grinding technology. The device comprises a grinding disk body, a fixing ring and a vacuum guide pipe, wherein a plurality of pieces of convex diamond with the tops at the same height are arranged on the surface of the grinding disk body, and the diamond part is embedded in the surface of the grinding disk body; the fixing ring is arranged around the edge of the grinding disk body in a surrounding mode, and the top of the fixing ring and the tops of the multiple pieces of diamond are at the same height; the pipe opening of the vacuum guide pipe is formed in the surface of the grinding disk body. In the wafer grinding process, the falling diamond is fixed in the fixing ring by the fixing ring, diamond particles are discharged into a water draining opening of a grinding machine table through the vacuum guide pipe, the water draining opening is connected with a sucker, and it is prevented that because the diamond ...

Optical Malus law experiment demonstration device

本实用新型揭示一种光学马吕斯定律实验演示装置，包括演示装置底座、光束灯、检偏器、起偏器、信号线以及检流计，该起偏器活动连接于检偏器左侧的中部位置，起偏器的外表面固定连接有套板，套板的上端面固定连接有转杆，演示装置底座的上端面且远离检偏器的左侧沿垂直方向固定连接有固定杆；本实用新型的光学马吕斯定律实验演示装置，通过套板、转杆、固定板、卡槽以及第三滑槽的结构设计，避免了因测量精度不够精确而导致操作人员需要多次测量操作的情况出现，有效解决了因需要多次进行测量操作而造成实验演示过程耗时耗力的问题，使得实验过程的进行更加快速、方便，更有利于马吕斯定律实验演示。

Cylindrical electrode assembly, battery cell, battery, electrical device and manufacturing method

A cylindrical electrode assembly of a coiled structure includes a main body and a first tab. The main body is provided with a first end face, and the first tab extends out of the first end face and is bent toward the first end face.

Cylindrical electrode assembly, battery cell, battery, electrical device, and manufacturing method

The present application discloses a cylindrical electrode assembly, a battery cell, a battery, an electrical device, and a manufacturing method. The cylindrical electrode assembly is of a coiled structure and comprises a main body and a first tab, the main body is provided with a first end face, and the first tab extends out of the first end face and is bent toward the first end face. The technical solutions provided by the present application can make the battery cell have higher safety.

Electrode sheet, electrode assembly, battery cell, battery, and electric device

Embodiments of this application provide an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The electrode plate includes: a current collector, where the current collector includes an insulation layer and a conductive layer disposed on an outer surface of the insulation layer, and the conductive layer includes a body portion and a tab portion arranged along a first direction; and a conductive structure, where the conductive structure is welded to the tab portion to form a welded zone, the conductive structure extends in a direction leaving the body portion, and in a second direction, a size of an end of the welded zone near the body portion is greater than a preset threshold, where the preset threshold is inversely related to the thickness of the tab portion in a third direction, and the second direction is perpendicular to the first direction and parallel to the tab portion, where the third direction is perpendicular to the first direction and the second direction. The technical solutions of the embodiments of this application can enhance the safety of the battery.

Electrode sheet and manufacturing method, electrode assembly and manufacturing method, battery cell, and battery

The present application relates to an electrode sheet (10) and a manufacturing method, an electrode assembly (100) and a manufacturing method, a battery cell (1000), and a battery (10000). In the design of the electrode sheet (10), the thickness h1 of a tab (12) is designed to be greater than the thickness h2 of a main body portion (1 1a), so that a thickness difference exists between the tab (12) and the main body portion (11a). In this way, in the manufacture of the battery, elimination of a gap between tabs (12) of wound electrode sheets (10) is facilitated, so that the tabs (12) are closely connected to each other. At this time, in the manufacture of the battery (10000) of the present application, there is no need to perform a flattening process on the tabs (12), so that particles generated by flattening are effectively prevented from falling into the battery (10000), thus greatly improving the safety performance of the battery (10000). Because there is no need to flatten the tabs (12), current flow capacity between the tabs (12) can be guaranteed without the need for reserving a space required for flattening on the electrode sheets (10), and a space for bending the tabs (12) can also be sufficiently and efficiently used so that the electrode sheets (10) fully use the space to improve the energy density of the battery (10000); meanwhile, the risks of inward insertion of the tabs (12) and short circuits that may be caused by the flattening process can also be effectively avoided, thereby further improving the safety performance of the battery (10000).

Electrode plate, electrode assembly, battery cell, battery, and electric device

Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The electrode plate includes: a current collector, where the current collector includes an insulation layer and a conductive layer disposed on an outer surface of the insulation layer, and the conductive layer includes a body portion and a tab portion arranged along a first direction; and a conductive structure, where the conductive structure is welded to the tab portion to form a welded zone, the conductive structure extends in a direction leaving the body portion, and in a second direction, a size of an end of the welded zone near the body portion is greater than a preset threshold, where the preset threshold is inversely related to thickness of the tab portion in a third direction, and the second direction is perpendicular to the first direction and parallel to the tab portion.

Electrode sheet of battery, electrode assembly, battery cell, battery, and electric device

Embodiments of this application provide a battery electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, which can improve battery safety. Specifically, the battery electrode plate according to an embodiment of this application includes a current collector, an active substance layer, and a conductive structure, where the current collector includes a main body portion and a tab portion disposed in a first direction, where the main body portion is covered with the active substance layer and the tab portion is not covered with the active substance layer; a first region of the conductive structure is welded to a portion of the tab portion to form a welding mark zone; and the welding mark zone is at least partially covered with a protective layer.

Electrode plate and manufacturing method thereof, electrode assembly and manufacturing method thereof, battery cell, and battery

An electrode plate includes a current collector including a main body portion and a tab protruding from the main body portion, and an active layer applied onto at least one side of the main body portion. A thickness of the tab is greater than a thickness of the main body portion.

Electrode assembly, battery cell, battery, and electrical device

Embodiments of this application provide an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator stacked along a first direction, the separator being used to separate the positive electrode plate and the negative electrode plate; where in a second direction, size of the negative electrode plate is larger than size of the positive electrode plate, and an orthographic projection of the positive electrode plate on a plane in which a surface of the negative electrode plate is located does not extend beyond the negative electrode plate, where the second direction is a width direction of the negative electrode plate, and the first direction is perpendicular to the second direction; and in the first direction, burrs on a negative electrode current collector of the negative electrode plate have a size of L1, a negative electrode active substance layer of the negative electrode plate has a size of L2, and the separator has a size of L3, and in the second direction, a difference is L4 between a minimum distance from a middle position of the negative electrode plate to an end of the negative electrode plate and a minimum distance from a middle position of the positive electrode plate to an end of the positive electrode plate; where L 1, L2, L3, and L4 satisfy L1 ≤ L2 + L3 + L4. The technical solution of this application can reduce the risk of short circuit in the battery.

Battery cell, battery, and electric device

Embodiments of this application provide a battery cell, a battery, and an electric device. The battery cell includes an electrode assembly, and the electrode assembly includes a body portion and a lead-out portion that are disposed in a first direction, the body portion being electrically connected to an electrode terminal via the lead-out portion. The lead-out portion includes a tab portion and a conductive structure. A first end of the conductive structure is welded to the tab portion to form a welded zone, a second end of the conductive structure is connected to the electrode terminal, and the conductive structure extends along a direction leaving the body portion. A melting zone is provided between the welded zone and the body portion. The technical solution of this application can reduce the probability of thermal runaway of batteries.

Electrode sheet, electrode assembly, battery cell, battery, and electrical device

Embodiments of this application provide an electrode plate, including a current collector, an active substance layer, and a conductive structure. The current collector includes a body portion and a tab portion provided along a first direction, where the body portion is covered with the active substance layer, the tab portion is not covered with the active substance layer, and the conductive structure extends along the first direction and is connected to the tab portion, forming a connecting zone. In a second direction, the connecting zone has a dimension greater than the thickness of a body region of the electrode plate, so that after an electrode assembly is wound, connecting zones of adjacent layers are mutually attached; where the second direction is a thickness direction of the electrode plate, the second direction is perpendicular to the first direction, and the body region of the electrode plate is a region corresponding to the body portion covered with the active substance layer. The electrode plate provided in the embodiments of this application can improve the safety performance of the battery. This application also provides an electrode assembly, battery cell, battery, and electric device including the foregoing electrode plate.

Battery cell, battery and electric device

Embodiments of this application provide a battery cell, a battery, and an electric device. The electrode assembly (22) includes a body portion (251) and a lead-out portion (252) that are disposed in a first direction (X), the body portion (251) being electrically connected to an electrode terminal (241) via the lead-out portion (252). The lead-out portion (252) includes a tab portion (253) and a conductive structure (254). A first end of the conductive structure (254) is welded to the tab portion (253) to form a welded zone (255), a second end of the conductive structure (254) is connected to the electrode terminal (241), and the conductive structure (254) extends along a direction leaving the body portion (251). A melting zone (26) is provided between the welded zone (255) and the body portion (251). The technical solution of this application can reduce the probability of thermal runaway of batteries.

Electrode sheet, electrode assembly, battery cell, battery, and electrical device

Embodiments of this application provide an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, where the electrode plate includes an active substance region and a non-active substance region arranged along a first direction. The non-active substance region is provided with a bending structure bent along a second direction, the bending structure extends along a third direction, and in the third direction, the active substance region and the bending structure have the same size, where the second direction is a thickness direction of the active substance region, and the first direction, the second direction, and the third direction are perpendicular to each other. This not only increases the space utilization and energy density of the battery cell, but also simplifies the production process and improves the production efficiency of the battery cell.

Cylindrical electrode assembly, battery cell, battery, electrical device, and manufacturing method

Electrode plate, electrode assembly, battery cell, battery, and electric device

Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, where the electrode plate includes an active substance region and a non-active substance region arranged along a first direction. The non-active substance region is provided with a bending structure bent along a second direction, the bending structure extends along a third direction, and in the third direction, the active substance region and the bending structure have the same size, where the second direction is a thickness direction of the active substance region, and the first direction, the second direction, and the third direction are perpendicular to each other. This not only increases the space utilization and energy density of the battery cell, but also simplifies the production process and improves the production efficiency of the battery cell.

Electrode assembly, battery cell, battery, and electric device

Provided are an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator stacked along a first direction, the separator being used to separate the positive electrode plate and the negative electrode plate; where in a second direction, size of the negative electrode plate is larger than size of the positive electrode plate, and an orthographic projection of the positive electrode plate on a plane in which a surface of the negative electrode plate is located does not extend beyond the negative electrode plate, where the second direction is a width direction of the negative electrode plate, and the first direction is perpendicular to the second direction.

Electrode plate, electrode assembly, battery cell, battery, and electric device

Provided are an electrode plate, including a current collector, an active substance layer, and a conductive structure. The current collector includes a body portion and a tab portion provided along a first direction, where the body portion is covered with the active substance layer, the tab portion is not covered with the active substance layer, and the conductive structure extends along the first direction and is connected to the tab portion, forming a connecting zone. In a second direction, the connecting zone has a dimension greater than thickness of a body region of the electrode plate, so that after an electrode assembly is wound, connecting zones of adjacent layers are mutually attached; where the second direction is a thickness direction of the electrode plate, the second direction is perpendicular to the first direction.

Electrode plate, electrode assembly, battery cell, battery, and electric device

An electrode plate includes a current collector. The current collector includes a conductive layer and an insulating layer. The conductive layer includes a tab portion. In thickness direction of the electrode plate, the conductive layer is provided at two opposite sides of the insulating layer. The insulating layer includes a first region and a second region, and in width direction of the electrode plate, at least one end of the first region is connected to the second region. Thickness of the second region is less than thickness of the first region, and the tab portion is at least partially disposed in the second region. The electrode plate further includes an active substance layer applied on a surface of the conductive layer facing away from the insulating layer. The tab portion is not coated with the active substance layer.

Battery electrode plate, electrode assembly, battery cell, battery, and electric device

Provided are a battery electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, which can improve battery safety. Specifically, the battery electrode plate according to an embodiment of this application includes a current collector, an active substance layer, and a conductive structure, where the current collector includes a main body portion and a tab portion disposed in a first direction, where the main body portion is covered with the active substance layer and the tab portion is not covered with the active substance layer; a first region of the conductive structure is welded to a portion of the tab portion to form a welding mark zone; and the welding mark zone is at least partially covered with a protective layer.

Current collector, electrode plate, electrode assembly, battery cell, battery, and electric device

A battery cell of a cylindrical structure includes a wound electrode assembly. An electrode plate of the electrode assembly includes a current collector, and the current collector includes a support layer and a conductive layer. In a thickness direction of the current collector, the conductive layer is disposed on at least one side of the support layer, and elongation of the support layer is greater than elongation of the conductive layer. In the thickness direction of the current collector, the support layer has a thickness greater than a total thickness of the conductive layer of the current collector.