Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/655—Solid structures for heat exchange or heat conduction
  • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
  • H01M10/647—Prismatic or flat cells, e.g. pouch cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/655—Solid structures for heat exchange or heat conduction
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/655—Solid structures for heat exchange or heat conduction
  • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
  • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
  • H01M10/6567—Liquids
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• the invention relates to the field of heat exchangers, in particular for cooling or heating battery cells (accumulators), which are arranged side by side or on top of each other to form a battery module, which is used, for example, in electric vehicles as an energy source.
• accumulators battery cells
• a heat exchanger assembly comprising battery cells or battery modules arranged in a row, between which a seal is placed defining a space through which a thermally regulated medium flows, the supply and discharge of which is provided by manifolds placed on the sides of the battery cells or battery modules.
• heat exchangers are used for thermal regulation of prismatic battery cells and their assemblies into battery modules. These heat exchangers are composed of several pairs of pressed plates connected to each other by inlet and outlet tubes, which complete and close the heat exchanger inner circuit in which the heat transfer medium, usually a liquid, flows.
• the cooling plates are placed between the individual battery cells or battery modules, or one cooling plate with an inlet and outlet port is placed under the battery modules.
• the required functionality of the heat exchanger and the efficiency of heat transfer between the cooling plates and the cooled battery cells or modules depend on their permanent contact and the size of the heat transfer area. As a result of vibration, thermal and compressive stresses during operation, cracks form in depressions on the plate and tubular connections between the individual plates, which subsequently leak the cooling medium that causes a critical failure of the entire system.
• All components made of electrically conductive materials and in areas with a risk of a short-circuit of the battery module must be provided with electrical insulation, which increases production costs, weight, and footprint dimensions and reduces heat transfer efficiency.
• the purpose of this invention is to create a compact heat exchanger assembly that will have a higher heat transfer efficiency and thus higher thermal performance with the ability to efficiently absorb vibration and thermal expansion of the individual components without the need for additional electrical insulation of the individual components. At the same time, weight, footprint dimensions, and production precision requirements are reduced.
• a heat exchanger assembly comprising a heat exchanger inner circuit, an inlet port for supplying a heat transfer medium to the heat exchanger inner circuit, an outlet port for discharging the heat transfer medium from the heat exchanger inner circuit, and at least one battery cell or battery module, the essence of which is a shaped seal made of an elastomeric material, wherein at least a portion of the heat exchanger inner circuit is defined for the flow of the heat transfer medium by two parallel surfaces and shaped seal, wherein at least one of the parallel surfaces is a battery cell or battery module surface and the at least portion of the heat exchanger inner circuit is linked by its first end to the inlet port and by its second end to the outlet port.
• Shaped seals are placed between prismatic battery cells, battery modules, or between a battery module and an area of any component, e.g., a battery pack carrier shell, which in combination with the cooled area of the individual prismatic battery cells, battery modules, or component area forms a cooling circuit.
• the cooling circuits thus formed are linked to a common inlet and outlet manifold or media supply and discharge chamber, which are provided with a seal and are placed on sides perpendicular to the cooled sides of the battery cells or battery modules. The idea is to efficiently utilize the areas of the components requiring thermal management to create a higher-level heat exchanger assembly without the need to duplicate individual shells in the assembly, thus saving on heat exchanger production material.
• the inlet and outlet manifolds can preferably be replaced by a single double manifold with two media supply and discharge integrated channels if the shape of the seal is adapted to this solution.
• the manifolds can be made of plastics and their composites without the need for additional electrical insulation.
• the manifolds can be provided with a bleed valve to facilitate filling of the heat exchanger with the medium, or sensors for measuring the medium.
• the cooled areas of the battery cells and battery modules are in direct contact with the heat transfer medium. This results in immediate direct heat transfer over the maximum possible area and increase in the thermal regulation efficiency by significantly reducing heat loss outside the cooled areas.
• Shaped seals provide efficient absorption of thermal expansion of the battery cells or battery modules, which results in greater compression of the seals, reducing the profile of the flow channel, resulting in increased flow rate and overall thermal performance. Shaped seals absorb vibration and eliminate their transfer between the individual components, increasing the life of all battery cell and battery module fixed connections.
• Fig. 1. an axonometric view of a possible embodiment of the heat exchanger assembly.
• Fig. 2. - a transverse section through the center of the shaped seal.
• Fig. 3. - a longitudinal section through the centers of the inlet and outlet manifold.
• Fig. 4. an axonometric view of a possible embodiment of the heat exchanger assembly.
• Fig. 5. a transverse section through the center of the shaped seal.
• Fig. 6. - a longitudinal section through the center of one of two integrated channels of the double manifold.
• Fig. 7. an axonometric view of a possible embodiment of the heat exchanger assembly.
• Fig. 8. - a longitudinal section through the center of the shaped seal.
• Fig. 9. an axonometric view of a possible embodiment of the heat exchanger assembly.
• Fig. 10. - a longitudinal section through the center of the shaped seal.
• Fig. 11. an axonometric view of a possible embodiment of the heat exchanger assembly.
• Fig. 12. - a longitudinal section through the center of the shaped seal.
• Fig. 13. an axonometric view of a possible embodiment of the heat exchanger assembly.
• Fig. 14. - a longitudinal section through the center of the shaped seal.
• the heat exchanger assembly shown in Fig. 1 comprises eleven prismatic battery cells 1 arranged in a single row behind each other, between which ten shaped seals 2 are inserted to form ten cooling circuits, which are linked in parallel on one side of the prismatic battery cells to an inlet manifold 3 provided with an inlet port 4 and a seal 5 and, on the other side of the prismatic battery cells, to an outlet manifold 6 provided with an outlet port 7 and a seal 8.
• the linkage of one of the ten cooling circuits to the inlet manifold 3 and outlet manifold 6 is shown in a transverse section in Fig. 2, supplemented by an enlarged detail of the linkage point of the outlet manifold 6 with the cooling circuit formed by the shaped seal 2 and the two attached prismatic batteries 1 by means of the seal 8 inserted in a groove on the outlet manifold 6, which is provided with the outlet port 7.
• the linkage of the inlet manifold 3, which is provided with the inlet port 4 and the seal 5, is identical to the linkage of the outlet manifold 6.
• a connection is formed, e.g., by gluing, welding, or mechanical locking.
• each of the ten shaped seals 2 defines a cooling circuit between two cooled areas of the prismatic battery cells 1.
• the seal 5 and the seal 8 provide the linkage between the inlet manifold 3 provided with the inlet port 4, the prismatic battery cells 1 and the outlet manifold 6 provided with the outlet port 7 in combination with the formed connection, e.g., by gluing, welding, or mechanical locking.
• Fig. 3 The parallel linkage of the ten cooling circuits to the inlet manifold 3 and outlet manifold 6 is shown in a transverse section in Fig. 3, where each of the ten shaped seals 2 defines a cooling circuit between two cooled areas of the prismatic battery cells 1.
• the seal 5 and the seal 8 provide the linkage between the inlet manifold 3 provided with the inlet port 4, the prismatic battery cells 1 and the outlet manifold 6 provided with the outlet port 7 in combination with the formed connection, e.g., by gluing, welding, or mechanical locking.
• a similar type of the heat exchanger assembly which consists of eleven prismatic battery cells 1 arranged in a single row behind each other, between which ten shaped seals 16 are inserted, thus forming ten cooling circuits which are linked in parallel on only one side of the prismatic battery cells to a double manifold 9 provided with the inlet port 4, outlet port 7 and seal 10.
• the linkage of one of the ten cooling circuits to the double manifold 9 is shown in a transverse section in Fig. 5, supplemented by an enlarged detail of the linkage point of the double manifold 9 with the cooling circuit formed by the shaped seal 16 and the two attached prismatic batteries 1 by means of the seal P) inserted in a groove on the double manifold 9, which is provided with the inlet port 4 and outlet port 7.
• a connection is formed, e.g., by gluing, welding, or mechanical locking.
• each of the ten shaped seals 16 defines a cooling circuit between two cooled areas of the prismatic battery cells 1.
• the seal P) provides a linkage between the double manifold 9 provided with the inlet port 4 and outlet port 7 and the prismatic battery cells 1 in combination with a formed connection, e.g., by gluing, welding, or mechanical locking.
• a second similar type of the heat exchanger assembly which consists of an area of the component 12, on which a shaped seal 18 is placed, on which a battery module G7 is placed, which is provided with an inlet chamber 19 having an inlet port 4 and an outlet chamber 20 having an outlet port 7.
• the inlet chamber 19 and the outlet chamber 20 are linked to the battery module G7 e.g., by gluing, welding, soldering, or mechanical locking to form a single cooling circuit.
• the desired compression of the shaped seal 18 may be achieved by loosely fitting the battery module 17 on the shaped seal 18, assuming sufficient weight of the battery module 17, or by forming an additional connection between the area of the component 12 and the battery module 17, e.g., by mechanical locking or welding.
• the linkage of the cooling circuit to the inlet chamber 19 and the outlet chamber 20 is shown in a longitudinal section in Fig. 8, where the shaped seal 18 extends past the edge of the battery module 17 to link the inlet chamber 19 and the outlet chamber 20.
• the inlet chamber 19 provided with the inlet port 4 and the outlet chamber 20 provided with the outlet port 7 may be placed arbitrarily on the sides of the battery module 17, if the shaped seal 18 is adapted to this solution.
• a third similar type of the heat exchanger assembly which consists of an area of the component 12, on which a shaped seal 21 is placed, on which the battery module 17 is placed, which is provided with a double chamber 13 having the inlet port 4 and the outlet port 7.
• the double chamber 13 is linked to the battery module 17 by means of five screws 14, which can be replaced e.g., by mechanical locking or welding, and a seal 15.
• the desired compression of the shaped seal 21 may be achieved by loosely fitting the battery module 17 on the shaped seal 21, assuming sufficient weight of the battery module 17, or by forming an additional connection between the area of the component 12 and the battery module 17, e.g., by mechanical locking or welding.
• the linkage of the cooling circuit to the double chamber 13 is shown in a longitudinal section in Fig. 10, supplemented by an enlarged detail of the linkage point, where the shaped seal 21 extends past the edge of the battery module 17 to link the double chamber 13, which is provided with the inlet port 4, the outlet port 7, and the seal 15.
• the double chamber 13 may be placed arbitrarily on the sides of the battery module 17 if the shaped seal 21 is adapted to this solution.
• a fourth similar type of the heat exchanger assembly which consists of an area of the component 12, on which a shaped seal 22 is placed, on which a battery module 23 is placed, the outer shell of which is extended on the bottom cooled side by shaped elements for linking the inlet port 4 and the outlet port 7.
• the desired compression of the shaped seal 22 may be achieved by loosely fitting the battery module 23 on the shaped seal 22, assuming sufficient weight of the battery module 23. or by forming an additional connection between the area of the component 12 and the battery module 23, e.g., by mechanical locking or welding.
• the linkage of the cooling circuit through the shaped elements on the battery module 23 to the inlet port 4 and the outlet port 7 is shown in a longitudinal section in Fig. 12, where the shaped seal 22 does not extend past the edge of the battery module 23 at any point.
• the shaped elements on the battery module 23 may be placed arbitrarily on the sides of the battery module 23 if the shaped seal 22 is adapted to this solution.
• a fifth similar type of the heat exchanger assembly which consists of eleven prismatic battery cells 1 arranged in a single row behind each other, between which ten shaped seals 27 are inserted, thereby forming ten cooling circuits.
• the shaped seal 27 on both sides of the prismatic battery cells 1 extends past the edges of the cooled surfaces to create a space for parallel linkage to the inlet and outlet manifolds.
• the inlet manifold is composed of one plug 25, nine manifold cells 24, and an inlet chamber 26 provided with the inlet port 4.
• the outlet manifold is composed of one plug 25, nine manifold cells 24, and an outlet chamber 28 provided with the outlet port 7.
• Each component of the inlet and outlet manifold can be provided with a groove with a seal for linking to the battery cell.
• All components of the input and output manifolds may be replaced by components forming a single double manifold with two or more integrated channels, wherein these components are placed on one and the same side of the battery cells in the same manner. All components of the manifolds can be incorporated into the production process of the shell of the battery cells or battery modules, making them an integral, integrated part of them.
• the linkage of one of the ten cooling circuits to the inlet manifold via the inlet chamber 26 and the outlet manifold via the outlet chamber 28 is shown in a transverse section in Fig. 14, where the inlet chamber 26 is provided with the inlet port 4 and the outlet chamber 28 is provided with the outlet port 7.
• a connection is formed, e.g., by gluing, welding, or mechanical locking.
• the linkage of the cooling circuits by means of the manifold cells 24 and the plug 25 and the formation of the manifold, thereby completing the cooling circuit, is identical to the linkage of the chambers 26 and 28.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Secondary Cells (AREA)
• Battery Mounting, Suspending (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=77693437

Family Applications (1)

Country Status (2)

Cited By (2)

Citations (3)

• 2020
  • 2020-07-28 CZ CZ2020-429A patent/CZ2020429A3/cs unknown
• 2021
  • 2021-07-16 WO PCT/CZ2021/050078 patent/WO2022022759A1/en not_active Ceased

Patent Citations (3)

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