# US 10,770,703 B2 · Battery module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,703 B2 - Document ID: US10770703B2 - Status: Granted - Kind: B2 - Application number: 16/126,096 - Filed: 2018-09-10 - Published: 2019-04-18 - Granted: 2020-09-08 - Earliest claimed: 2017-10-13 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Atsushi Sakurai - Web page: https://patentgrep.com/patent/US10770703B2 ## CPC - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - H01M 10/0481: {Compression means other than compression means for stacks of electrodes and separators} - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - 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 - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A battery module includes: a cell stack which is constituted by stacking a plurality of cells, and includes a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface; a pair of end plates which are disposed on the first surface and the second surface of the cell stack; and a pair of connection frames which connect the pair of end plates. The pair of end plates each includes: a plurality of column portions; a plurality of beam portions; and hollow portions formed by the column portions and the beam portions. The pair of the end plates each has a uniform width in a stacking direction. In at least one beam portion of the plurality of beam portions, a width of a central portion is greater than a width of both end portions. ## Claims ### Claim 1 A battery module comprising: a cell stack which is constituted by stacking a plurality of cells in a first direction and includes a first surface which is a surface on one end side in the first direction, a second surface which is a surface on the other end side in the first direction, a third surface which is a surface on one end side in a second direction perpendicular to the first direction, a fourth surface which is a surface on the other end side in the second direction, a fifth surface which is a surface on one end side in a third direction perpendicular to the first direction and the second direction, and a sixth surface which is a surface on the other end side in the third direction; a pair of end plates which are disposed on the first surface and the second surface of the cell stack; and a pair of connection frames which connect the pair of end plates, wherein the pair of end plates each includes: a plurality of column portions extending in the third direction; a plurality of beam portions extending in the second direction; and hollow portions formed by the column portions and the beam portions, the pair of end plates each has a uniform width in the first direction, in at least one beam portion of the plurality of beam portions, a width in the third direction of a central portion in the second direction is greater than a width in the third direction of both end portions in the second direction, and the pair of connection frames each includes: a connection frame body; and a pair of wrap-around portions which extend from the connection frame body to be curved to the first surface and the second surface of the cell stack. ### Claim 2 (depends on 1) The battery module according to claim 1, wherein the at least one beam portion includes a pair of parallel surfaces that are parallel in the first direction and the second direction, and an external connection terminal of the cell stack is fixed to the pair of parallel surfaces. ### Claim 3 (depends on 1) The battery module according to claim 1, wherein the pair of end plates each has a rectangular shape when viewed from the first direction, the pair of end plates each is provided with R portions having a predetermined curvature at four corners, and both end portions of the wrap-around portion in the third direction overlap with the R portions in the third direction. ### Claim 4 (depends on 3) The battery module according to claim 3, wherein a length of the wrap-around portion in the third direction is shorter than a length of the end plate in the third direction. ### Claim 5 (depends on 1) The battery module according to claim 1, wherein the battery module includes a base plate disposed on the sixth surface of the cell stack, the pair of end plates each is provided with a protrusion portion on a surface facing the base plate, and the base plate is provided with a groove portion which accommodates the protrusion portion and extends in the first direction. ### Claim 6 (depends on 1) The battery module according to claim 1, wherein the battery module includes a base plate disposed on the sixth surface of the cell stack, the beam portion of the end plate facing the base plate includes a pair of parallel surfaces that are parallel in the first direction and the second direction, and the base plate and the parallel surfaces of the beam portion are fastened by a fastening member. ### Claim 7 (depends on 1) The battery module according to claim 1, wherein the pair of end plates each is an extrusion molded product. ### Claim 8 (depends on 1) The battery module according to claim 1, wherein the pair of end plates each is an extrusion molded product made of aluminum.