# US 9,520,625 B2 · Cooling device for a battery system, in particular of a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,625 B2 - Document ID: US9520625B2 - Status: Granted - Kind: B2 - Application number: 14/494,574 - Filed: 2014-09-23 - Published: 2015-03-26 - Granted: 2016-12-13 - Earliest claimed: 2013-09-24 - Assignees: Mahle Behr GmbH & Co. KG - Applicants: Matthias Ganz; Oleksandr Pavlov; Bernd Schaefer - Inventors: Matthias Ganz; Oleksandr Pavlov; Bernd Schaefer - Web page: https://patentgrep.com/patent/US9520625B2 ## CPC - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - B60H 1/00: Heating, cooling or ventilating devices - F25B 1/005: {of the single unit type (F25B1/10 takes precedence)} - F25B 5/00: Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity (with cascade operation F25B7/00) - H01M 10/613: Cooling or keeping cold - H01M 10/625: Vehicles - H01M 10/663: the system being an air-conditioner or an engine - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 90/14: Plug-in electric vehicles - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A cooling device for a battery system may include at least two battery units. The cooling device may include at least a first and a second cooling plate able to be flowed through respectively by a coolant. The first and second cooling plate may be arranged respectively for thermal coupling with a respective battery unit. The first and second cooling plate each may include a first fluid inlet, which is connected fluidically with a first fluid outlet via a first fluid duct extending along an extent direction, and a second fluid inlet, which is connected fluidically with a second fluid outlet via a second fluid duct extending along the extent direction. ## Claims ### Claim 1 A cooling device for a battery system, comprising: at least two battery units, at least a first and a second cooling plate, able to be flowed through respectively by a coolant, which are arranged respectively for thermal coupling with a respective battery unit, wherein the first and second cooling plate each include a first fluid inlet, which is connected fluidically with a first fluid outlet via a first fluid duct extending along an extent direction, and a second fluid inlet, which is connected fluidically with a second fluid outlet via a second fluid duct extending along the extent direction, wherein the fluid inlets and the fluid outlets of all cooling plates are connected with one another such that in at least one cooling plate the coolant flowing in the extent direction of the respective cooling plate through the first fluid duct flows contrary to the extent direction through the second fluid duct of the same cooling plate or vice versa. ### Claim 2 (depends on 1) The cooling device according to claim 1, wherein a third cooling plate is provided. ### Claim 3 (depends on 1) The cooling device according to claim 1, wherein the fluid ducts of the at least two cooling plates are connected fluidically with one another such that the coolant flows successively through the fluid ducts at least of two different cooling plates. ### Claim 4 (depends on 1) The cooling device according to one of claim 1, wherein the fluid ducts of the at least two cooling plates are connected fluidically with one another such that the coolant in at most one particular cooling plate flows through the first fluid duct and subsequently flows directly through the second fluid duct of the same cooling plate. ### Claim 5 (depends on 1) The cooling device according to claim 1, wherein the fluid ducts of the cooling plates are connected fluidically in series to one another, so that no fluid branch is provided between two fluidically adjacent cooling plates. ### Claim 6 (depends on 1) The cooling device according to claim 1, wherein at least two cooling plates are connected fluidically parallel to one another, so that fluid branches are provided between at least two fluidically adjacent cooling plates for at least one of dividing and bringing together the coolant flow. ### Claim 7 (depends on 1) The cooling device according to claim 1, wherein the first and the second fluid duct comprises respectively at least one flat tube mounted on the cooling plate. ### Claim 8 (depends on 7) The cooling device according to claim 7, wherein the respective flat tube is formed integrally on the cooling plate. ### Claim 9 A battery system with integrated cooling function, comprising: at least a first and a second battery unit, a cooling device, including: at least a first cooling plate and a second cooling plate respectively flowable through by a coolant, the first and second cooling plates respectively including a first fluid inlet connected fluidically with a first fluid outlet via a first fluid duct extending along an extent direction, and a second fluid inlet connected fluidically with a second fluid outlet via a second fluid duct extending along the extent direction, wherein the fluid inlets and the fluid outlets of the cooling plates are connected with one another such that in a least one cooling plate the coolant flowing in the extent direction of the respective cooling plate through the first fluid duct flows opposite to the extent direction through the second fluid duct of the same cooling plate, or vice versa, wherein each battery unit is thermally coupled respectively with an associated cooling plate. ### Claim 10 (depends on 9) The battery system according to claim 9, wherein a cover plate is associated with each cooling plate, such that the respective battery unit is arranged in the manner of a sandwich between the cooling plate and cover plate. ### Claim 11 (depends on 10) The battery system according to claim 10, wherein the cover plate includes a plate material of at least one of aluminium and plastic. ### Claim 12 (depends on 9) The battery system according to claim 9, wherein the fluid ducts of at least the first and second cooling plates are connected fluidically with one another such that the coolant flows successively through the fluid ducts. ### Claim 13 (depends on 9) The battery system according to claim 9, wherein the fluid ducts of at least the first and second cooling plates are connected fluidically with one another such that the coolant in the respective coolant plates flows through the first fluid duct and subsequently flows directly through the second fluid duct of the same cooling plate. ### Claim 14 (depends on 9) The battery system according to claim 9, wherein the fluid ducts of the cooling plates are connected fluidically in series to one another, such that no fluid branch is provided between two fluidically adjacent cooling plates. ### Claim 15 (depends on 9) The battery system according to claim 9, wherein the first and second cooling plates are connected fluidically parallel to one another, such that fluid branches are formed between fluidically adjacent cooling plates for at least one of dividing and bringing together the coolant flow. ### Claim 16 (depends on 9) The battery system according to claim 9, wherein the first fluid duct and the second fluid duct each are composed of at least one flat tube mounted on the respective cooling plate. ### Claim 17 An air conditioning circuit for a motor vehicle, comprising: a compressor for compressing a coolant, a condenser, arranged downstream of the compressor, for cooling the compressed coolant, a vaporizer, arranged upstream of the compressor, which has a vaporizer inlet and a vaporizer outlet, a battery system, including: a cooling device including at least a first cooling plate and a second cooling plate, which are flowable through by the coolant and are arranged respectively for thermal coupling with a respective battery unit, wherein the first and second cooling plate respectively include a first fluid inlet which is connected fluidically with a first fluid outlet via a first fluid duct extending along an extent direction, and a second fluid inlet which is connected fluidically with a second fluid outlet via a second fluid duct extending along the axial direction, the fluid ducts of the first and second cooling plate connected fluidically with one another such that the coolant flows successively through the fluid ducts of at least two different cooling plates, wherein at least one of the first fluid duct and the second fluid duct is composed of at least two flat tubes extending along a longitudinal direction of the cooling plate and mounted on the cooling plate, wherein the fluid inlets and the fluid outlets of the cooling plates are connected with one another such that in at least one cooling plate a coolant flowing in the extent direction of the respective cooling plate through the flat tubes of the first fluid duct flows contrary to the extent direction through the flat tubes of the second fluid duct of the same cooling plate, or vice versa, at least two battery units, wherein each battery unit is thermally coupled with an associated cooling plate, and wherein the cooling device communicates fluidically with the vaporizer inlet and with the vaporizer outlet. ### Claim 18 (depends on 17) The air conditioning circuit according to claim 17, wherein the fluid ducts of the first and second cooling plates are connected fluidically with one another such that the coolant of the cooling plates flows through the flat tubes of the first fluid duct and subsequently flows directly through the flat tubes of the second fluid duct of the same cooling plate. ### Claim 19 (depends on 17) The air conditioning circuit according to claim 17, wherein the fluid ducts of the cooling plates are connected fluidically in series to one another, such that no fluid branch is provided between two fluidically adjacent cooling plates. ### Claim 20 (depends on 17) The air conditioning circuit according to claim 17, wherein the first and second cooling plates are connected fluidically parallel to one another, such that fluid branches are provided between adjacent cooling plates for at least one of dividing and bringing together the coolant flow.