# US 12,183,903 B2 · Storage battery device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,903 B2 - Document ID: US12183903B2 - Status: Granted - Kind: B2 - Application number: 17/518,681 - Filed: 2021-11-04 - Published: 2022-02-24 - Granted: 2024-12-31 - Earliest claimed: 2019-05-14 - Assignees: Kabushiki Kaisha Toshiba - Applicants: Kabushiki Kaisha Toshiba - Inventors: Kazuto Kuroda; Masahiro Sekino; Akio Nishimaki; Hideo Yamasaki; Teruyoshi Kogure; Yosuke Saeki - Web page: https://patentgrep.com/patent/US12183903B2 ## CPC - H01M 10/613: Cooling or keeping cold - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/625: Vehicles - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 10/653: characterised by electrically insulating or thermally conductive materials - H01M 10/6552: Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes - H01M 10/6553: Terminals or leads - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 10/6563: with forced flow, e.g. by blowers - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/227: Organic material - 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 50/502: Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01M 50/55: on the same side of the cell - H01M 50/566: by welding, soldering or brazing - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - 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 A storage battery device includes: a cell unit including a plurality of battery cells; an electric flow path material that forms a current path through which electric power is supplied from or to the battery cells; and a radiator thermally coupled to the current-path member. ## Claims ### Claim 1 A storage battery device, comprising: a cell unit including a plurality of battery cells; an electric flow path material configured to form a current path through which electric power is supplied from or to the battery cells; and a radiator thermally coupled to the electric flow path material, wherein the electric flow path material includes a bus bar that connects the battery cells to each other, and the radiator is thermally coupled to the bus bar connecting the battery cells to each other, and further comprising: a battery management unit placed between the cell unit and the radiator, and that includes a through hole for the bus bar to thermally couple to the radiator, the battery management unit configured to manage the cell unit, wherein the radiator is thermally coupled to the battery management unit. ### Claim 2 (depends on 1) The storage battery device according to claim 1, wherein the electric flow path material includes a positive-electrode-side terminal and a negative-electrode-side terminal that are included in at least one of the battery cells, and the radiator is thermally coupled to the positive-electrode-side terminal and the negative-electrode-side terminal. ### Claim 3 (depends on 1) The storage battery device according to claim 1, further comprising: a DC-DC converter electrically connected to the cell unit via the electric flow path material, the DC-DC converter configured to boost a voltage of electric power of the cell unit for output, and step down a voltage of external electric power for output to the cell unit, wherein the radiator is thermally coupled to the DC-DC converter. ### Claim 4 (depends on 3) The storage battery device according to claim 3, wherein the electric flow path material includes a bus bar that connects the cell unit to the DC-DC converter, and the radiator is further thermally coupled to the bus bar connecting the cell unit to the DC-DC converter. ### Claim 5 (depends on 1) The storage battery device according to claim 1, wherein the radiator includes a hollow part that allows a coolant to flow through an inside thereof. ### Claim 6 (depends on 5) The storage battery device according to claim 5, further comprising: an air blower configured to blow cooling air as the coolant to the radiator. ### Claim 7 (depends on 3) The storage battery device according to claim 3, wherein: the radiator includes a hollow part that allows a coolant to flow through an inside thereof, and the DC-DC converter and the battery management unit are disposed at opposing sides of the radiator via the hollow part and are thermally coupled to the radiator. ### Claim 8 (depends on 1) The storage battery device according to claim 1, wherein the radiator includes a heat pipe. ### Claim 9 (depends on 4) The storage battery device according to claim 4, wherein the bus bar includes a bus bar connecting two battery cells together, a bus bar that connects a positive-electrode-side cell charge and discharge terminal to a high-potential side of the DC-DC converter, and a bus bar that connects a negative-electrode-side cell charge and discharge terminal to a lower-potential side of the DC-DC converter. ### Claim 10 (depends on 1) The storage battery device according to claim 1, wherein the radiator is thermally coupled to the bus bar by a heat conductive material with insulating properties. ### Claim 11 (depends on 10) The storage battery device according to claim 10, wherein the radiator is thermally coupled to the bus bar by the heat conductive material in a through hole between the radiator and the bus bar. ### Claim 12 (depends on 2) The storage battery device according to claim 2, wherein the radiator includes protrusions to be thermally coupled to the positive-electrode-side terminal and the negative-electrode-side terminal. ### Claim 13 (depends on 12) The storage battery device according to claim 12, wherein the protrusions of the radiator are thermally coupled to the positive-electrode-side terminal and the negative-electrode-side terminal by a heat conductive material with insulating properties. ### Claim 14 (depends on 5) The storage battery device according to claim 5, wherein the radiator includes joints connected to a coolant supply system to connect to the hollow part that allows the coolant to flow through an inside thereof. ### Claim 15 (depends on 1) The storage battery device according to claim 1, wherein the radiator is a heat pipe structure including an evaporator, a heat insulator, and a condenser. ### Claim 16 A storage battery device, comprising: a cell unit including a plurality of battery cells; an electric flow path material configured to form a current path through which electric power is supplied from or to the battery cells; a radiator thermally coupled to the electric flow path material; a DC-DC converter electrically connected to the cell unit via the electric flow path material, the DC-DC converter configured to boost a voltage of electric power of the cell unit for output, and step down a voltage of external electric power for output to the cell unit, wherein the radiator is thermally coupled to the DC-DC converter; and a battery management unit electrically connected to a bus bar that connects the battery cells to each other, the battery management unit configured to manage the cell unit, wherein the radiator includes a hollow part that allows a coolant to flow through an inside thereof, and the DC-DC converter and the battery management unit are disposed at opposing sides of the radiator via the hollow part and are thermally coupled to the radiator. ### Claim 17 (depends on 16) The storage battery device according to claim 16, wherein the electric flow path material includes a bus bar that connects the cell unit to the DC-DC converter, and the radiator is further thermally coupled to the bus bar connecting the cell unit to the DC-DC converter. ### Claim 18 (depends on 17) The storage battery device according to claim 17, wherein the bus bar includes a bus bar connecting two battery cells together, a bus bar that connects a positive-electrode-side cell charge and discharge terminal to a high-potential side of the DC-DC converter, and a bus bar that connects a negative-electrode-side cell charge and discharge terminal to a lower-potential side of the DC-DC converter.