# US 12,119,455 B2 · Electrode assembly and related battery, battery module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,455 B2 - Document ID: US12119455B2 - Status: Granted - Kind: B2 - Application number: 17/253,598 - Filed: 2020-06-02 - Published: 2021-12-02 - Granted: 2024-10-15 - Earliest claimed: 2020-06-02 - Assignees: Contemporary Amperex Technology Co., Limited - Applicants: Contemporary Amperex Technology (Hong Kong) Limited - Inventors: Chengdu Liang; Hu Xu; Haizu Jin; Yuqun Zeng - Web page: https://patentgrep.com/patent/US12119455B2 ## CPC - H01M 4/667: {in the form of layers, e.g. coatings} - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - H01M 4/623: {fluorinated polymers} - H01M 4/626: {Metals} - H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)} - H01M 4/668: {Composites of electroconductive material and synthetic resins} - H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract The present disclosure provides an electrode assembly and a related battery, battery module, wherein, the electrode assembly includes: a plurality of first type of electrode plates and at least one second type of electrode plate which are arranged in a superimposing manner, the polarity of the first type of electrode plate is opposite to the polarity of the second type of electrode plate, the plurality of first type of electrode plates comprise a first electrode plate and a second electrode plate, wherein the first electrode plate comprises a first current collector, the second electrode plate comprises a second current collector, and the first current collector is different from the second current collector. ## Claims ### Claim 1 An electrode assembly, comprising: a plurality of first type of electrode plates, at least one second type of electrode plate, and a diaphragm, which are arranged in an overlapping manner, wherein the polarity of the plurality of first type of electrode plates is opposite to the polarity of the at least one second type of electrode plate, the diaphragm is configured to separate an adjacent first type of electrode plate from the at least one second type of electrode plate, and the plurality of first type of electrode plates comprises a first electrode plate and a second electrode plate, wherein the first electrode plate comprises a first current collector, and the second electrode plate comprises a second current collector, wherein the first current collector comprises a first conducting layer and a protective layer which are arranged in an overlapping manner along a direction vertical to a surface on which the plurality of first type of electrode plates and the at least one second type of electrode plate are overlapped, and the resistivity of the protective layer is greater than the resistivity of the first conducting layer, and the first current collector comprises two of the protective layers, respectively arranged at two sides of the first conducting layer, and wherein the second current collector is composed of a second conducting layer. ### Claim 2 (depends on 1) The electrode assembly according to claim 1, wherein the material of each of the two protective layers comprises at least one of the following: polymer matrix, conducting material, and inorganic filler. ### Claim 3 (depends on 2) The electrode assembly according to claim 2, wherein the polymer matrix comprises at least one of the following: polyvinylidene fluoride polymer matrix and polyvinylidene chloride polymer matrix. ### Claim 4 (depends on 1) The electrode assembly according to claim 1, wherein the material of the first conducting layer is the same as the material of the second conducting layer. ### Claim 5 (depends on 1) The electrode assembly according to claim 1, wherein the materials of the first conducting layer and the second conducting layer are both metal. ### Claim 6 (depends on 1) The electrode assembly according to claim 1, wherein the thickness of the first conducting layer is smaller than or equal to the thickness of the second conducting layer. ### Claim 7 (depends on 1) The electrode assembly according to claim 1, wherein the difference between the thickness of the first current collector and the thickness of the second current collector is no greater than 5 μm. ### Claim 8 (depends on 1) The electrode assembly according to claim 1, wherein an electrode plate at an outermost layer of the electrode assembly is the first electrode plate. ### Claim 9 (depends on 1) A battery, comprising: a housing; and an electrode assembly according to claim 1, wherein the electrode assembly is arranged in the housing. ### Claim 10 (depends on 9) A battery module, comprising a plurality of batteries according to claim 9. ### Claim 11 (depends on 10) A battery pack, comprising a plurality of battery modules according to claim 10. ### Claim 12 (depends on 9) A device using the battery, comprising the battery according to claim 9, wherein the battery is configured to provide electric energy for the device. ### Claim 13 A manufacturing method of an electrode assembly, comprising: providing a plurality of first type of electrode plates, at least one second type of electrode plate and a diaphragm, wherein the polarity of the plurality of first type of electrode plates is opposite to the polarity of the at least one second type of electrode plate, the diaphragm is configured to separate adjacent first type of electrode plate from the second type of electrode plate, the plurality of first type of electrode plates comprises a first electrode plate and a second electrode plate, the first electrode plate comprises a first current collector, the second electrode plate comprises a second current collector, wherein the first current collector comprises a first conducting layer and a protective layer which are arranged in an overlapping manner along a direction vertical to a surface on which the first type of electrode plate and the second type of electrode plate are overlapped, and the resistivity of the protective layer is greater than the resistivity of the first conducting layer, the first current collector comprises two of the protective layers, respectively arranged at two sides of the first conducting layer; the second current collector is composed of a second conducting layer; and arranging the plurality of first type of electrode plates, at least one second type of electrode plate and the diaphragm in an overlapping manner.