# US 2019/0245175 A1 · Battery module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0245175 A1 - Document ID: US20190245175A1 - Status: Published application - Kind: A1 - Application number: 16/050,819 - Filed: 2018-07-31 - Published: 2019-08-08 - Earliest claimed: 2018-02-07 - Assignees: Contemporary Amperex Technology Co., Limited - Applicants: Contemporary Amperex Technology Co., Limited - Inventors: Feng QIN; Zhi Wang; Lin Ma; Hua Zhang; Xiaofan Wang; Xinfu Xiao - Web page: https://patentgrep.com/patent/US20190245175A1 ## CPC - H01M 10/0468: {Compression means for stacks of electrodes and separators} - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01M 50/308: Detachable arrangements, e.g. detachable vent plugs or plug systems - H01M 50/325: comprising deformable valve members, e.g. elastic or flexible valve members - H01M 50/367: Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems - 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 relates to a battery module, including: a housing having two oppositely disposed openings and a hollow chamber communicating with the two openings in a first direction; a battery stack disposed in the hollow chamber and comprising two or more battery cells, wherein each battery cell has first and second vent plates disposed opposite to each other in the first direction; a first end plate corresponding to one of the two openings and connected to the housing, wherein the first end plate is provided with a module output pole electrically connected to the battery stack and a deformable plate disposed opposite to the module output pole, and the deformable plate faces the first vent plate; a second end plate corresponding to the other of the two openings and connected to the housing; and a blocking member disposed between the second end plate and the battery stack. ## Claims ### Claim 1 A battery module, comprising: a housing having two oppositely disposed openings and a hollow chamber communicating with the two openings in a first direction; a battery stack disposed in the hollow chamber and comprising two or more battery cells stacked in a second direction and electrically connected to each other, wherein each of the two or more battery cells has a first vent plate and a second vent plate disposed opposite to each other in the first direction; a first end plate corresponding to one of the two openings and connected to the housing, wherein the first end plate is provided with a module output pole electrically connected to the battery stack and a deformable plate disposed opposite to the module output pole, and the deformable plate faces the first vent plate such that the deformable plate deforms and is electrically connected to the module output pole when the first vent plate is opened; a second end plate corresponding to the other of the two openings and connected to the housing; and a blocking member disposed between the second end plate and the battery stack such that a pressure for opening the second vent plate is greater than a pressure for opening the first vent plate. ### Claim 2 (depends on 1) The battery module of claim 1, wherein the blocking member comprises an abutment portion and an adapter portion connected to each other; the abutment portion is disposed opposite to the second vent plate of each of the two or more battery cells; and the adapter portion is connected with the second end plate. ### Claim 3 (depends on 2) The battery module of claim 2, wherein the abutment portion comprises a plate-like structure extending in the second direction; the plate-like structure has a first surface and a second surface disposed opposite to each other in a thickness direction of the plate-like structure; the first surface faces the second end plate; the second surface faces the second vent plate; and the first direction is perpendicular to the second direction. ### Claim 4 (depends on 3) The battery module of claim 3, wherein a gap of 0 mm to 2 mm is reserved between the second surface and the second vent plate. ### Claim 5 (depends on 3) The battery module of claim 3, wherein the plate-like structure has a thickness of 0.5 mm to 4 mm in the thickness direction. ### Claim 6 (depends on 3) The battery module of claim 3, wherein the plate-like structure is provided with an open notch that penetrates the plate-like structure in the thickness direction. ### Claim 7 (depends on 2) The battery module of claim 2, wherein the adapter portion comprises a columnar structure extending in the first direction and having an end connected to the abutment portion and other end connected to the second end plate. ### Claim 8 (depends on 7) The battery module of claim 7, wherein the columnar structure is provided with a recess along its axial direction. ### Claim 9 (depends on 7) The battery module of claim 7, wherein the blocking member comprises one adapter portion that is connected at a center position or a position close to a center of the abutment portion; or the blocking member comprises two or more adapter portions that are spaced apart from each other in the first direction, wherein each of the two or more adapter portions is located between the second vent plates of two adjacent battery cells. ### Claim 10 (depends on 1) The battery module of claim 1, wherein the first end plate and the second end plate are tightly connected with the housing to seal the housing, and the first end plate and/or the second end plate are provided with a module vent plate.