# US 12,002,995 B2 · Battery module, battery pack comprising battery module, and vehicle comprising battery pack > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,002,995 B2 - Document ID: US12002995B2 - Status: Granted - Kind: B2 - Application number: 17/051,102 - Filed: 2019-08-19 - Published: 2021-07-29 - Granted: 2024-06-04 - Earliest claimed: 2018-09-20 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Kyung-Mo Kim; Jeong-O Mun; Jin-Yong Park; Ho-June Chi - Web page: https://patentgrep.com/patent/US12002995B2 ## CPC - H01M 50/516: by welding, soldering or brazing - B23K 26/21: by welding - B23K 26/70: Auxiliary operations or equipment - B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors - B60L 50/50: using propulsion power supplied by batteries or fuel cells - B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75) - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/211: adapted for pouch cells - H01M 50/50: Current conducting connections for cells or batteries - H01M 50/503: characterised by the shape of the interconnectors - H01M 50/505: comprising a single busbar - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H01M 50/533: characterised by the shape of the leads or tabs - H01M 50/536: characterised by the method of fixing the leads to the electrodes, e.g. by welding - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - 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 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Discussed is a battery module that includes a plurality of battery cells having electrode leads protruding in at least one direction; and at least one bus bar disposed at one side of the plurality of battery cells and connected to the electrode leads of the plurality of battery, the bus bar having a beam penetration prevention guider configured to prevent a laser beam from penetrating toward the plurality of battery cells during a laser welding. ## Claims ### Claim 1 A battery module, comprising: a plurality of battery cells having electrode leads protruding in at least one direction; and at least one bus bar disposed at one side of the plurality of battery cells and connected to the electrode leads of the plurality of battery cells, the at least one bus bar having a beam penetration prevention guider configured to prevent a laser beam from penetrating toward the plurality of battery cells during a laser welding, wherein the at least one bus bar includes: a bus bar body configured to cover one side of the plurality of battery cells and formed to have a predetermined thickness, guide chamfers provided at opposite sides of an upper portion of the bus bar body to guide the laser welding, and the beam penetration prevention guider provided in a pair, and the pair of beam penetration prevention guiders provided to the opposite sides of the bus bar body, respectively, wherein the pair of beam penetration prevention guiders extend to be inclined downward from the guide chamfers towards a lower portion of the bus bar body, respectively, wherein inclined surfaces of the guide chamfers directly connect to opposite ends of an uppermost surface of the bus bar body, respectively, wherein inclined surfaces of the pair of beam penetration prevention guiders directly connect to the inclined surfaces of the guide chamfers, respectively, wherein the inclined surfaces of the pair of beam penetration prevention guiders directly connect to opposite ends of a lowermost surface of the bus bar body, respectively, and wherein the electrode leads laser-welded to the at least one bus bar are in contact only with the pair of beam penetration prevention guiders constituting the opposite side surfaces of the bus bar body without being bent in a horizontal direction at an upper side of the at least one bus bar. ### Claim 2 (depends on 1) The battery module according to claim 1, wherein a width between the pair of beam penetration prevention guiders gradually increases from the upper portion of the bus bar body to the lower portion of the bus bar body. ### Claim 3 (depends on 1) The battery module according to claim 1, wherein the pair of beam penetration prevention guiders are integrally formed with the bus bar body. ### Claim 4 (depends on 1) The battery module according to claim 1, wherein at least one end of the pair of beam penetration prevention guiders is rounded. ### Claim 5 (depends on 1) A battery pack, comprising: at least one battery module according to claim 1; and a pack case configured to package the at least one battery module. ### Claim 6 (depends on 5) A vehicle, comprising: at least one battery pack according to claim 5. ### Claim 7 (depends on 1) The battery module according to claim 1, wherein the at least one bus bar is attached to the electrode leads by the laser welding. ### Claim 8 (depends on 1) The battery module according to claim 1, wherein the inclined surfaces of the guide chamfers are angled relative to the inclined surfaces of the pair of beam penetration prevention guiders, respectively. ### Claim 9 (depends on 8) The battery module according to claim 8, wherein the inclined surfaces of the guide chamfers and the inclined surfaces of the pair of beam penetration prevention guiders are not parallel to the lowermost surface of the bus bar body. ### Claim 10 (depends on 1) The battery module according to claim 1, wherein the inclined surfaces of the pair of beam penetration prevention guider are inclined with a different inclination angle from the inclined surfaces of the guide chamfers, respectively.