# US 12,603,352 B2 · Battery pack having refrigerant circulation channel provided in pack case > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,352 B2 - Document ID: US12603352B2 - Status: Granted - Kind: B2 - Application number: 17/909,841 - Filed: 2021-05-03 - Published: 2023-11-23 - Granted: 2026-04-14 - Earliest claimed: 2020-06-02 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Soon Chang Hong; Hyong Seok Yoo; Chang Hyeon Yang; Hyoung Suk Lee - Web page: https://patentgrep.com/patent/US12603352B2 ## CPC - H01M 10/656: characterised by the type of heat-exchange fluid - H01M 10/613: Cooling or keeping cold - H01M 10/6554: Rods or plates - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - Y02E 60/10: Energy storage using batteries - 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 ## Abstract The present invention relates to a battery pack having a refrigerant circulation channel, and more particularly to a battery pack having a refrigerant circulation channel provided in a pack case, the battery pack including at least one battery module; a pack case configured to receive the battery module therein; and a cooling unit located between an inside upper surface of the pack case and the battery module, the cooling unit being configured to discharge heat generated from the battery module, wherein the pack case is provided with a refrigerant circulation channel configured to supply and collect a refrigerant to and from the cooling unit. ## Claims ### Claim 1 A battery pack, comprising: at least one battery module; a pack case configured to receive the at least one battery module therein, the pack case having a front frame, a rear frame, and a pair of side frames connecting the front frame and the rear frame to each other; and a cooling unit located inside the pack case between an inside upper surface of the pack case and a bottom exterior surface of each of the at least one battery module, the cooling unit being configured to discharge heat generated from the at least one battery module, the cooling unit having a major planar surface contacting and extending parallel to a major planar surface of each of the at least one battery module, the cooling unit extending between the pair of side frames, wherein the pack case is provided with a refrigerant circulation channel system therein configured to supply and collect a refrigerant to and from the cooling unit, the refrigerant circulation channel system including a pair of refrigerant circulation channels respectively provided in the pair of side frames, each refrigerant circulation channel having a respective refrigerant circulation pipe received therein and configured to supply and collect the refrigerant to and from the cooling unit, and wherein the pair of side frames each have a respective air circulation channel located adjacent to the respective refrigerant circulation channel, each air circulation channel extending in a direction parallel to the respective refrigerant circulation channel, each air circulation channel not being in communication with an interior of the pack case. ### Claim 2 A battery pack, comprising: at least one battery module; a pack case configured to receive the at least one battery module therein, the pack case having a front frame, a rear frame, and a pair of side frames connecting the front frame and the rear frame to each other; and a cooling unit located inside the pack case between an inside upper surface of the pack case and a bottom exterior surface of each of the at least one battery module, the cooling unit being configured to discharge heat generated from the at least one battery module, the cooling unit having a major planar surface contacting and extending parallel to a major planar surface of each of the at least one battery module, the cooling unit extending between the pair of side frames, wherein the pack case is provided with a refrigerant circulation channel system therein configured to supply and collect a refrigerant to and from the cooling unit, the refrigerant circulation channel system including a pair of refrigerant circulation channels respectively provided in the pair of side frames, wherein the pair of side frames each have a respective air circulation channel located adjacent to the respective refrigerant circulation channel, each air circulation channel extending in a direction parallel to the respective refrigerant circulation channel, each air circulation channel not being in communication with an interior of the pack case, and wherein the front frame has a refrigerant introduction port and a refrigerant discharge port spaced apart from each other, and the battery pack further comprises a pair of refrigerant transfer pipes in communication with the pair of refrigerant circulation channels, respectively, the pair of refrigerant transfer pipes being respectively connected to the refrigerant introduction port and the refrigerant discharge port. ### Claim 3 (depends on 1) The battery pack according to claim 1, wherein each air circulation channel has at least one incision portion configured to allow external air to pass therethrough. ### Claim 4 (depends on 1) The battery pack according to claim 1, wherein the cooling unit comprises: a heat sink; a first heat dissipation plate located between the heat sink and the at least one battery module; and a second heat dissipation plate located between the heat sink and the inside upper surface of the pack case. ### Claim 5 (depends on 4) The battery pack according to claim 4, wherein the heat sink comprises: a lower plate and an upper plate together forming a space therebetween in configured to receive circulation of a refrigerant therethrough; and a refrigerant inlet and a refrigerant outlet each detachably coupled to a respective one of the refrigerant circulation channels. ### Claim 6 (depends on 5) The battery pack according to claim 5, wherein a bottom surface of each side frame has fastening holes extending therethrough, each fastening hole connected to a respective one of the refrigerant inlet or the refrigerant outlet. ### Claim 7 (depends on 2) The battery pack according to claim 2, wherein each refrigerant circulation channel has a respective refrigerant circulation pipe received therein and configured to supply and collect the refrigerant to and from the cooling unit. ### Claim 8 (depends on 1) A device comprising the battery pack according to claim 1.