Heat exchange device, test device, battery assembly, battery device, and power consuming device

Abstract

The utility model provides a kind of heat exchange device, testing device, battery assembly, battery device and electric device, the heat exchange device includes: shell, interval arrangement is formed in the shell and is received cavity and heat exchange cavity, the received cavity is suitable for accommodating battery monomer, the heat exchange cavity ring is equipped in the periphery of the received cavity, the heat exchange cavity is suitable for accommodating heat exchange medium in it.According to the heat exchange device for battery monomer of the utility model, by setting heat exchange cavity in shell, and heat exchange cavity ring is equipped in the periphery of received cavity, heat exchange cavity can heat exchange battery monomer in received cavity, so as to guarantee the heat exchange effect of heat exchange device to battery monomer, while, accurate heat exchange can be carried out to single battery monomer, and then the service life of battery monomer can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrical device manufacturing technology, and in particular to a heat exchange device, testing device, battery assembly, battery device and electrical device for a single battery cell. Background Technology

[0002] In existing battery devices, multiple battery cells are heated by a cold plate. However, this method of heat exchange cannot achieve precise heat exchange, which can easily lead to thermal runaway of battery cells and compromise their lifespan. Utility Model Content

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, this invention provides a heat exchange device for a single battery cell, which can ensure the service life of the battery cell.

[0004] This application also proposes a test apparatus having the above-described heat exchange device for a single battery cell.

[0005] This application also proposes a battery assembly having the above-described heat exchange device for a single battery cell.

[0006] This application also proposes a battery device having the above-described battery components.

[0007] This application also proposes an electrical device having the above-mentioned battery device.

[0008] A heat exchange device for a battery cell according to a first aspect embodiment of the present invention includes: a housing, wherein a receiving cavity and a heat exchange cavity are formed therein at intervals, the receiving cavity is adapted to receive a battery cell, the heat exchange cavity is arranged around the periphery of the receiving cavity, and the heat exchange cavity is adapted to receive a heat exchange medium.

[0009] According to the present invention, a heat exchange device for a battery cell is provided in the housing and arranged around the periphery of the receiving cavity. The heat exchange cavity can exchange heat with the battery cell in the receiving cavity, thereby ensuring the heat exchange effect of the heat exchange device on the battery cell. At the same time, it can perform precise heat exchange on a single battery cell, thereby effectively ensuring the service life of the battery cell.

[0010] According to some embodiments of the present invention, the housing includes: a first housing, the first housing being annular and defining the receiving cavity on its inner side; and a second housing, the second housing including an annular cylindrical wall, the cylindrical wall being sleeved on the outer side of the first housing, the second housing cooperating with the first housing to define the heat exchange cavity.

[0011] According to some optional embodiments of the present invention, both the first housing and the second housing extend along a first direction, and the second housing further includes a bottom wall that covers one end of the cylinder wall in the first direction. The first housing is disposed inside the second housing, and one end of the first housing is sealed to the bottom wall of the second housing.

[0012] According to some optional embodiments of the present invention, the second housing further includes: a connecting ring, the connecting ring being annular and disposed inside the second housing, the connecting ring being connected to the bottom wall of the second housing, and one end of the first housing being inner and outer sleeved and sealed to the connecting ring.

[0013] According to some optional embodiments of the present invention, the number of connecting rings is multiple, and the multiple connecting rings are arranged at radial intervals along the second housing.

[0014] According to some embodiments of the present invention, a first sealing member is further provided between the connecting ring and the first housing. The first sealing member extends in a ring shape along the circumference of the first housing and is clamped between the connecting ring and the first housing.

[0015] According to some embodiments of the present invention, the first housing and the second housing cooperate to define the heat exchange cavity that is open on one side in the first direction. The housing further includes a cover plate, which is arranged opposite to the bottom wall of the second housing in the first direction. The cover plate is connected to the second housing and the first housing and covers the open side of the heat exchange cavity.

[0016] According to some optional embodiments of the present invention, the cover plate extends in an annular shape along the circumference of the first housing, the cover plate is provided with a first flange extending in the first direction, the first flange extending in an annular shape along the circumference of the first housing, and the cover plate is connected to the inner and outer sleeves of the first housing through the first flange; the cover plate is provided with a second flange extending in the first direction, the second flange extending in an annular shape along the circumference of the second housing, and the cover plate is connected to the inner and outer sleeves of the second housing through the second flange.

[0017] According to some optional embodiments of the present invention, a second sealing member is further provided between the first flange and the first housing. The second sealing member extends in a ring shape along the circumference of the first housing and is clamped between the first flange and the first housing. The second flange is inner and outer sleeved with one end of the second housing, and a third sealing member is further provided between the second flange and the second housing. The third sealing member extends in a ring shape along the circumference of the second housing and is clamped between the second flange and the second housing.

[0018] According to some embodiments of the present invention, the heat exchange cavity extends along a first direction and is annular along the circumference of the receiving cavity. The shell is provided with a liquid inlet and a liquid outlet, both of which are connected to the heat exchange cavity. The first direction is the direction of gravity. The liquid inlet and the liquid outlet are respectively located at both ends of the heat exchange cavity in the direction of gravity, and the liquid inlet is located below the liquid outlet in the direction of gravity. Alternatively, the liquid inlet and the liquid outlet are arranged at intervals in the circumference of the heat exchange cavity.

[0019] According to some optional embodiments of the present invention, an inlet pipe is connected to the liquid inlet position, an outlet pipe is connected to the liquid outlet position, and the heat exchange device further includes a temperature sensor, which is disposed on the liquid inlet pipe and / or the liquid outlet pipe.

[0020] According to some embodiments of the present invention, the heat exchange device further includes a heat insulation element, which at least covers the outer peripheral surface of the housing.

[0021] The testing apparatus according to a second aspect of the present invention includes a heat exchange device for a single battery cell according to a first aspect of the present invention.

[0022] According to the testing device of this utility model, by setting the heat exchange device for battery cells in the first aspect embodiment described above, when a single battery cell is charged and discharged in the laboratory, the heat exchange device can simulate the liquid cooling scenario of the battery cell in the real battery pack, thereby effectively ensuring the accuracy of the experimental data.

[0023] A battery assembly according to a third aspect of the present invention includes: a heat exchange device for a battery cell according to a first aspect of the present invention; a battery cell disposed within the receiving cavity, the battery cell being bonded to the inner wall of the receiving cavity by thermally conductive adhesive.

[0024] According to the battery assembly of this utility model, by setting the heat exchange device for the battery cell in the first aspect embodiment described above, and by setting a heat exchange cavity in the housing and surrounding the housing cavity, the heat exchange cavity can exchange heat with the battery cell in the housing cavity, thereby ensuring the heat exchange effect of the heat exchange device on the battery cell, and thus effectively preventing thermal runaway of the battery cell. At the same time, the battery cell is bonded to the housing cavity by thermally conductive adhesive, thereby effectively ensuring the heat transfer effect from the battery cell to the heat exchange cavity, and thus facilitating the heat exchange of the battery cell by the heat exchange medium.

[0025] A battery device according to a fourth aspect of the present invention includes: a housing and a battery assembly according to a third aspect of the present invention, wherein the battery assembly is disposed within the housing.

[0026] According to the battery device of this utility model, by setting the battery assembly of the third aspect embodiment above, and setting the heat exchange device of the first aspect on the battery assembly, by setting the heat exchange cavity in the housing and surrounding the housing cavity, the heat exchange cavity can exchange heat with the battery cells in the housing cavity, thereby ensuring the heat exchange effect of the heat exchange device on the battery cells, and thus effectively avoiding thermal runaway of the battery cells. At the same time, the battery assembly is set in the box, which is convenient for whole package transportation.

[0027] The electrical device according to the fifth aspect of the present invention includes the battery device according to the fourth aspect of the present invention.

[0028] According to the electrical device of this utility model, by providing the battery device of the fourth aspect embodiment, the battery assembly of the third aspect embodiment is provided in the battery device, and the heat exchange device of the first aspect is provided on the battery assembly. By providing a heat exchange cavity in the housing and surrounding the cavity, the heat exchange cavity can exchange heat with the battery cells in the cavity, thereby ensuring the heat exchange effect of the heat exchange device on the battery cells and effectively preventing thermal runaway of the battery cells. At the same time, precise heat exchange can be performed on a single battery cell, thereby effectively ensuring the service life of the battery cells.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a battery assembly according to an embodiment of the present utility model;

[0031] Figure 2 yes Figure 1 Exploded view of the heat exchange device shown;

[0032] Figure 3 yes Figure 2 A schematic diagram of the first housing shown;

[0033] Figure 4 yes Figure 2 A schematic diagram of the second housing shown;

[0034] Figure 5 yes Figure 2 A schematic diagram of one angle of the cover plate shown;

[0035] Figure 6 yes Figure 2 A schematic diagram of the cover plate from another angle;

[0036] Figure 7 yes Figure 1 The heat exchange device shown is a cross-sectional view.

[0037] Figure label:

[0038] 100. Heat exchange device;

[0039] 10. Shell; 11. First shell; 12. Second shell; 121. Cylinder wall; 122. Bottom wall; 123. Connecting ring; 13. Cover plate; 131. First flange; 132. Second flange; 14. Liquid inlet; 15. Liquid inlet pipe; 16. Liquid outlet; 17. Liquid outlet pipe;

[0040] 101. Receiving cavity; 102. Heat exchange cavity;

[0041] 20. Temperature sensor;

[0042] 31. First seal; 32. Second seal; 33. Third seal;

[0043] 200. Battery cell;

[0044] 1000. Battery assembly. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0046] The following is a reference appendix. Figure 1-7 The present invention describes a heat exchange device 100 for a battery cell according to an embodiment of the present invention.

[0047] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 According to an embodiment of the present invention, a heat exchange device 100 for a battery cell includes: a housing 10, in which a receiving cavity 101 and a heat exchange cavity 102 are formed at intervals. The receiving cavity 101 is adapted to receive a battery cell 200, and the heat exchange cavity 102 is arranged around the periphery of the receiving cavity 101. The heat exchange cavity 102 is adapted to receive a heat exchange medium.

[0048] For example, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, the housing 10 contains spaced-apart receiving cavities 101 and heat exchange cavities 102. Multiple heat exchange cavities 102 can be arranged, spaced apart circumferentially from the receiving cavities 101. Alternatively, only one heat exchange cavity 102 can be arranged, extending annularly along the circumference of the receiving cavities 101. The heat exchange medium can be a phase change material or a coolant. Preferably, the housing 10 is made of aluminum alloy, which has excellent thermal conductivity, allowing the heat from the battery cell 200 to be rapidly transferred to the heat exchange cavity 102 of the housing 10.

[0049] When assembling the battery cell 200 and the heat exchange device 100, the battery cell 200 can be placed in the receiving cavity 101 first, and then the heat exchange medium can be filled in the heat exchange cavity 102. At this time, the battery cell 200 and the heat exchange device 100 are assembled.

[0050] The heat exchange device 100 for battery cells of this invention, by setting a heat exchange cavity 102 inside the housing 10, can exchange heat with the battery cells 200 inside the housing cavity 101. This not only enables independent temperature control of each individual battery cell 200 and precise heat exchange to maintain it at a suitable operating temperature, thus effectively ensuring the service life of the battery cells 200, but also enhances the heat exchange effect on individual battery cells, thereby preventing thermal runaway. Furthermore, since the heat exchange cavity is arranged around the periphery of the housing cavity, when heat from the battery cell 200 is transferred to the heat exchange cavity 102, the heat exchange cavity 102 can exchange heat circumferentially around the battery cell 200. Compared to heat exchange at the bottom or top of the battery cell 200, circumferential heat exchange significantly increases the heat exchange area, further ensuring the heat exchange effect of the heat exchange device 100 on the battery cells. In addition, heat is generated inside the battery cell 200. The heat needs to be transferred to the surface around the battery cell 200 before it can be carried away by the heat exchange chamber 102. Therefore, the heat exchanger is arranged around the circumference of the receiving cavity 101, which can provide the shortest and most uniform heat dissipation path, thereby effectively reducing the radial temperature difference inside the battery cell 200.

[0051] According to an embodiment of the present invention, a heat exchange device 100 for a battery cell is provided in the housing 10 with a heat exchange cavity 102 arranged around the periphery of the receiving cavity 101. The heat exchange cavity 102 can exchange heat with the battery cell 200 in the receiving cavity 101, thereby ensuring the heat exchange effect of the heat exchange device 100 on the battery cell 200. At the same time, it can perform precise heat exchange on a single battery cell 200, thereby effectively ensuring the service life of the battery cell 200.

[0052] According to some embodiments of this utility model, refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 The housing 10 includes a first housing 11 and a second housing 12. The first housing 11 is annular and defines a receiving cavity 101 on its inner side; the second housing 12 includes an annular cylindrical wall 121, which is sleeved on the outer side of the first housing 11, and the second housing 12 cooperates with the first housing 11 to define a heat exchange cavity 102.

[0053] In this way, the first housing 11 defines the receiving cavity 101 through its own structural form, eliminating the need for further processing of the receiving cavity 101 and thus saving processing steps. Simultaneously, the second housing 12, in conjunction with the first housing 11, defines the heat exchange cavity 102, eliminating the need for further processing of the heat exchange cavity 102 and thus saving further processing steps. This, in turn, saves production time and improves processing efficiency. Furthermore, the first housing 11 can serve both as the cavity wall for the heat exchange cavity 102 and the receiving cavity 101, and also as a separator between the two, thereby enhancing the functional integration of the first housing 11.

[0054] For example, such as Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the first housing 11 extends in a ring shape along the circumference of the battery cell 200, and the upper and lower sides of the first housing 11 are open. The second housing 12 includes a cylindrical wall 121, which extends in a ring shape along the circumference of the battery cell 200 and is sleeved on the outside of the first housing 11. The inner side of the first housing 11 defines a receiving cavity 101, and the second housing 12 cooperates with the first housing 11 to define a heat exchange cavity 102 arranged circumferentially along the receiving cavity 101.

[0055] According to some optional embodiments of the present invention, refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 The first housing 11 and the second housing 12 are both along the first direction (e.g., Figure 2 Extending in the vertical direction shown, the second housing 12 also includes a cap on one end of the cylinder wall 121 in the first direction (as shown in the vertical direction). Figure 2 The bottom wall 122 of the lower end of the cylindrical wall 121 shown, the first housing 11 is disposed inside the second housing 12, and one end of the first housing 11 (as shown) Figure 2 The bottom end of the first housing 11 shown is sealed to the bottom wall 122 of the second housing 12.

[0056] Thus, since both the first housing 11 and the second housing 12 extend vertically, when the first housing 11 and the second housing 12 are fitted together, they can directly define the receiving cavity 101 and the heat exchange cavity 102. Simultaneously, the bottom wall 122 can cover one end of the heat exchange cavity 102, thereby preventing the heat exchange medium from flowing out from that end. The bottom wall 122 can also cover one end of the receiving cavity 101, thus providing support for the battery cell 200 within the receiving cavity 101. Furthermore, the sealed connection between the first housing 11 and the second housing 12 ensures that the heat exchange cavity 102 and the receiving cavity 101 are sealed and isolated at the connection point, thereby preventing the cooling medium from flowing from the heat exchange cavity 102 to the receiving cavity 101.

[0057] For example, such as Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the first housing 11 extends in the vertical direction as a hollow cylinder, and the second housing 12 is a hollow cylinder that extends in the vertical direction and is closed at the bottom and open at the top. The first housing 11 is disposed inside the second housing 12, and the bottom end of the first housing 11 is sealed to the bottom wall 122 of the second housing 12.

[0058] According to some optional embodiments of the present invention, refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 The second housing 12 further includes: a connecting ring 123, which is annular and disposed within the second housing 12. The connecting ring 123 is connected to the bottom wall 122 of the second housing 12. One end of the first housing 11 (e.g., Figure 3 The lower end of the first housing 11 shown is fitted inside and sealed to the connecting ring 123.

[0059] In this way, the first housing 11 is connected to the second housing 12 via the connecting ring 123, which facilitates the connection between the first housing 11 and the second housing 12. At the same time, the first housing 11 and the connecting ring 123 are connected by an inner and outer sleeve. This connection method is simple and easy to operate, thereby improving the connection efficiency. In addition, the first housing 11 and the connecting ring 123 are sealed together, which can ensure the sealing and isolation between the heat exchange chamber 102 and the receiving chamber 101, thereby effectively preventing the heat exchange medium from flowing into the receiving chamber 101.

[0060] For example, such as Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the connecting ring 123 extends in a ring shape along the circumference of the battery cell 200. The lower end of the connecting ring 123 is connected to the bottom wall 122, and the upper end of the connecting ring 123 extends upward. The lower end of the first housing 11 is sleeved on the radial outer side of the connecting ring 123 and is sealed to the connecting ring 123.

[0061] According to some optional embodiments of the present invention, refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 The number of connecting rings 123 is multiple, that is, the number of connecting rings 123 can be two, three or four or more, and the multiple connecting rings 123 are arranged at radial intervals along the second housing 12.

[0062] In this way, the first housing 11 with different cross-sectional dimensions can define the receiving cavity 101 of different sizes, thereby adapting to battery cells 200 of different sizes, and thus improving the versatility of the heat exchange device 100. At the same time, the first housing 11 corresponds one-to-one with the corresponding connecting ring 123, which can ensure that the first housing 11 can be connected to the corresponding connecting ring 123, and also ensure the sealing between the first housing 11 and the connecting ring 123.

[0063] It should be explained that the heat exchange device 100 may include only one first housing 11, which is sized and connected to one of the connecting rings 123 on the second housing 12. The heat exchange device 100 may also be equipped with multiple first housings 11, for example, two, three, four, or more. The multiple first housings 11 have different cross-sectional dimensions, and each first housing 11 corresponds one-to-one with a multiple connecting ring 123 and is sized to fit them. When assembling the heat exchange device 100, any first housing 11 can be selected to connect to the corresponding connecting ring 123 on the second housing 12 to meet the installation requirements of battery cells 200 of different sizes. For example, as shown in Figure 2... Figure 3 , Figure 4 and Figure 7 As shown, there are multiple connecting rings 123, which are arranged at radial intervals along the second housing 12, and the multiple connecting rings 123 cooperate with the corresponding first housing 11.

[0064] According to some embodiments of this utility model, refer to Figure 2 , Figure 3 and Figure 4 A first sealing element 31 (not shown in the figure) is also provided between the connecting ring 123 and the first housing 11. The first sealing element 31 extends in a ring shape along the circumference of the first housing 11 and is sandwiched between the connecting ring 123 and the first housing 11. Thus, the first sealing element 31 can seal the gap between the connecting ring 123 and the first housing 11, thereby sealing and isolating the heat exchange chamber 102 from the receiving chamber 101, and effectively preventing the heat exchange medium from flowing into the receiving chamber 101.

[0065] For example, the first seal 31 can be a sealant and is applied to the outer peripheral surface of the connecting ring 123. When the first housing 11 is fitted onto the connecting ring 123, the first seal 31 is located between the outer peripheral surface of the connecting ring 123 and the inner peripheral surface of the first housing 11.

[0066] According to some embodiments of this utility model, refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The first housing 11 and the second housing 12 cooperate to define a first direction (e.g., Figure 2 The heat exchange cavity 102 is open on one side in the vertical direction shown. The housing 10 also includes a cover plate 13, which is arranged opposite to the bottom wall 122 of the second housing 12 in the first direction. The cover plate 13 is connected to the second housing 12 and the first housing 11 and covers the open side of the heat exchange cavity 102.

[0067] Thus, the cover plate 13 is connected to the first housing 11 and the second housing 12, and the cover plate 13 cooperates with the bottom wall 122 to seal the two ends of the heat exchange cavity 102 in the first direction, thereby preventing the heat exchange medium from flowing from the heat exchange cavity 102 to the receiving cavity 101.

[0068] For example, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the first housing 11 and the second housing 12 cooperate to form a heat exchange cavity 102 with its upper side open. The cover plate 13 is connected to the upper ends of both the first housing 11 and the second housing 12 to close the open side of the upper side of the heat exchange cavity 102.

[0069] According to some optional embodiments of the present invention, refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 The cover plate 13 extends in a ring shape along the circumference of the first housing 11, and the cover plate 13 is provided along a first direction (such as...). Figure 6 The first flange 131 extends in the vertical direction as shown. The first flange 131 extends in a ring shape along the circumference of the first housing 11. The cover plate 13 is connected to the inner and outer shells of the first housing 11 through the first flange 131. The cover plate 13 is provided with a second flange 132 extending in the first direction. The second flange 132 extends in a ring shape along the circumference of the second housing 12. The cover plate 13 is connected to the inner and outer shells of the second housing 12 through the second flange 132.

[0070] Thus, the first flange 131 facilitates the connection between the cover plate 13 and the first housing 11, thereby improving connection efficiency. Simultaneously, the annular extension of the first flange 131 increases the connection area between the first flange 131 and the first housing 11, ensuring the connection strength and effectively preventing separation between the cover plate 13 and the first housing 11. Furthermore, the second flange 132 facilitates the connection between the cover plate 13 and the second housing 12, thereby improving connection efficiency. Simultaneously, the annular extension of the second flange 132 increases the connection area between the second flange 132 and the second housing 12, ensuring the connection strength and effectively preventing separation between the cover plate 13 and the second housing 12.

[0071] Furthermore, the cover plate 13 will not block the open side of the receiving cavity 101, which facilitates the placement of the battery cell 200 in the receiving cavity 101, and can also block the open side of the heat exchange cavity 102 to ensure the airtightness of the heat exchange cavity 102.

[0072] For example, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the cover plate 13 extends in a ring shape along the circumference of the first housing 11. The inner radial end of the cover plate 13 is provided with a first flange 131 extending vertically downward. The first flange 131 extends in a ring shape along the circumference of the cover plate 13 and is fitted onto the upper end of the first housing 11. The outer radial end of the cover plate 13 is provided with a second flange 132 extending vertically downward. The second flange 132 extends in a ring shape along the circumference of the cover plate 13 and is fitted onto the upper end of the second housing 12.

[0073] According to some optional embodiments of the present invention, refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 A second sealing element 32 (not shown in the figure) is also provided between the first flange 131 and the first housing 11. The second sealing element 32 extends in a ring shape along the circumference of the first housing 11 and is sandwiched between the first flange 131 and the first housing 11. The second flange 132 is connected to one end of the second housing 12 in an inner and outer sleeve, and a third sealing element 33 (not shown in the figure) is also provided between the second flange 132 and the second housing 12. The third sealing element 33 extends in a ring shape along the circumference of the second housing 12 and is sandwiched between the second flange 132 and the second housing 12.

[0074] Thus, by providing the second sealing element 32, the gap between the first flange 131 and the first housing 11 can be sealed, ensuring the sealing effect of the heat exchange cavity 102 and preventing the heat exchange medium from flowing from the heat exchange cavity 102 to the receiving cavity 101. Furthermore, by providing the third sealing element 33, the gap between the second flange 132 and the second housing 12 can be sealed, ensuring the sealing effect of the heat exchange cavity 102 and preventing the heat exchange medium from flowing from the heat exchange cavity 102 to the external environment.

[0075] For example, the second seal 32 can be a sealant and is applied to the outer surface of the upper side of the first housing 11. When the first flange 131 is engaged with the first housing 11, the second seal 32 is located between the inner circumferential surface of the first flange 131 and the outer circumferential surface of the first housing 11. The third seal 33 can be a sealant and is applied to the outer surface of the upper side of the second housing 12. When the second flange 132 is engaged with the second housing 12, the third seal 33 is located between the inner circumferential surface of the second flange 132 and the outer circumferential surface of the second housing 12.

[0076] According to some embodiments of this utility model, refer to Figure 1 , Figure 2 and Figure 7 The heat exchange chamber 102 is along the first direction (e.g., Figure 1 Extending in the vertical direction shown, and extending in a ring shape along the circumference of the receiving cavity 101, the shell 10 is provided with a liquid inlet 14 and a liquid outlet 16, both of which are connected to the heat exchange cavity 102. The first direction is the direction of gravity, and the liquid inlet 14 and liquid outlet 16 are respectively located at both ends of the heat exchange cavity 102 in the direction of gravity (e.g., [example missing]). Figure 2 (as shown in the upper and lower ends), and the inlet 14 is located below the outlet 16 in the direction of gravity.

[0077] By setting up an inlet 14 and an outlet 16, the heat exchange medium can be supplied to the heat exchange chamber 102 through an external pipeline, thereby ensuring the heat exchange effect. At the same time, the inlet 14 is located below the outlet 16, so the heat exchange medium can flow out of the heat exchange chamber 102 from the top outlet 16 only after fully exchanging heat on the periphery of the battery cell 200. This ensures the heat exchange uniformity of the heat exchange medium and effectively prevents thermal runaway of the battery cell 200.

[0078] For example, such as Figure 1 , Figure 2 and Figure 7 As shown, the heat exchange chamber 102 extends in the vertical direction and extends in a ring shape along the circumference of the receiving chamber 101. The liquid inlet 14 is located at the lower end of the shell 10, and the liquid outlet 16 is located at the upper end of the shell 10. Both the liquid inlet 14 and the liquid outlet 16 are connected to the heat exchange chamber 102.

[0079] Furthermore, such as Figure 1 , Figure 2 and Figure 7 As shown, the liquid inlet 14 and the liquid outlet 16 are arranged at intervals in the circumferential direction of the heat exchange chamber 102. Therefore, the heat exchange medium needs to flow circumferentially along the receiving cavity 101 within the heat exchange chamber 102, which can ensure that the heat exchange medium can fully exchange heat with the battery cell 200, thereby effectively ensuring the heat exchange effect.

[0080] Furthermore, such as Figure 1 , Figure 2 and Figure 7 As shown, the inlet 14 and outlet 16 are arranged at approximately a 90° angle in the circumferential direction of the heat exchange chamber 102. Alternatively, the inlet 14 and outlet 16 can be arranged on opposite sides in the radial direction of the heat exchange chamber 102.

[0081] According to some optional embodiments of the present invention, refer to Figure 1 , Figure 2 and Figure 7 The heat exchange device 100 includes an inlet pipe 15 connected to the inlet 14 and an outlet pipe 17 connected to the outlet 16. The temperature sensor 20 is located in the inlet pipe 15 and / or the outlet pipe 17. Therefore, the temperature sensor 20 can measure the temperature of the heat exchange medium. By installing temperature sensors 20 in both the inlet pipe 15 and the outlet pipe 17, the heat exchange effect of the heat exchange medium on the battery cell 200 can be monitored in real time. Based on the temperature data, the flow rate and temperature of the heat exchange medium can be controlled, thereby adapting the heat exchange medium to the required heat exchange intensity of the battery cell 200. Thus, while improving heat exchange efficiency, thermal runaway of the battery cell 200 can be avoided.

[0082] According to some embodiments of this utility model, refer to Figure 1 and Figure 2 The heat exchange device 100 also includes a heat insulation element, which covers at least the outer peripheral surface of the housing 10. That is, the heat insulation element can cover the outer peripheral surface of the housing 10, or it can cover the entire surface of the housing 10. Thus, the heat insulation element prevents the heat absorbed by the heat exchange cavity 102 from being transferred to adjacent structures, such as adjacent battery cells 200, thereby preventing heat radiation between adjacent battery cells 200. Simultaneously, the heat insulation element isolates heat within the heat exchange cavity 102, reducing heat loss and ensuring effective heat exchange.

[0083] The test apparatus according to the second aspect embodiment of the present invention, referring to... Figure 1 and Figure 2 This includes the heat exchange device 100 for a single battery cell, which is part of the first aspect of this embodiment.

[0084] According to the test apparatus of the present invention, by setting the heat exchange device 100 of the first aspect embodiment above, when a single battery cell 200 is charged and discharged in the laboratory, the heat exchange device 100 can simulate the liquid cooling scenario of the battery cell 200 in the real battery pack, thereby effectively ensuring the accuracy of the experimental data.

[0085] Furthermore, the testing device may include a liquid supply system, which is connected to both the inlet pipe 15 and the outlet pipe 17, thereby facilitating the supply of heat exchange medium to the heat exchange chamber 102 and ensuring the heat exchange effect of the heat exchange device 100.

[0086] According to a third aspect embodiment of the present invention, a battery assembly 1000 is described, with reference to... Figure 1 and Figure 2 The first aspect of this embodiment includes a heat exchange device 100 for a battery cell and a battery cell 200. The battery cell 200 is disposed in a receiving cavity 101 and is bonded to the inner wall of the receiving cavity 101 by thermally conductive adhesive.

[0087] According to the test apparatus of the present invention, by setting the heat exchange device 100 of the first aspect embodiment, by setting the heat exchange cavity 102 in the housing 10 and surrounding the periphery of the receiving cavity 101, the heat exchange cavity 102 can exchange heat with the battery cell 200 in the receiving cavity 101, thereby ensuring the heat exchange effect of the heat exchange device 100 on the battery cell 200, and thus effectively preventing thermal runaway of the battery cell 200. At the same time, the battery cell 200 is bonded to the receiving cavity 101 by thermally conductive adhesive, thereby effectively ensuring the heat transfer effect from the battery cell 200 to the heat exchange cavity 102, and thus facilitating the heat exchange of the battery cell 200 by the heat exchange medium.

[0088] According to the battery device of the fourth aspect embodiment of the present invention, referring to... Figure 1 and Figure 2 It includes: a housing (not shown in the figure) and a battery assembly 1000 of the third aspect of this embodiment, wherein the battery assembly 1000 is disposed in the housing.

[0089] According to the battery device of the present invention, by providing the battery assembly 1000 of the third aspect embodiment described above, and providing the heat exchange device 100 of the first aspect on the battery assembly 1000, by providing the heat exchange cavity 102 in the housing 10 and surrounding the periphery of the receiving cavity 101, the heat exchange cavity 102 can exchange heat with the battery cell 200 in the receiving cavity 101, thereby ensuring the heat exchange effect of the heat exchange device 100 on the battery cell 200, and thus effectively avoiding thermal runaway of the battery cell 200. At the same time, the battery assembly 1000 is located in the box, which is convenient for whole package transportation.

[0090] According to the fifth aspect embodiment of the present utility model, the electrical device is described with reference to... Figure 1 and Figure 2 This includes the battery device of the fourth aspect of this embodiment. For example, the electrical device is a vehicle.

[0091] According to the embodiments of the present invention, the electrical device is provided with the battery device of the fourth aspect embodiment described above, and the battery assembly 1000 of the third aspect embodiment described above is provided in the battery device. The heat exchange device 100 of the first aspect described above is provided on the battery assembly 1000. By providing a heat exchange cavity 102 in the housing 10 and surrounding the periphery of the receiving cavity 101, the heat exchange cavity 102 can exchange heat with the battery cells 200 in the receiving cavity 101, thereby ensuring the heat exchange effect of the heat exchange device 100 on the battery cells 200, and thus effectively preventing thermal runaway of the battery cells 200. At the same time, precise heat exchange can be performed on a single battery cell 200, thereby effectively ensuring the service life of the battery cells 200.

[0092] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0093] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0094] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0096] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange device (100) for a single battery cell, characterized in that, include: The housing (10) has spaced-apart receiving cavities (101) and heat exchange cavities (102) inside. The receiving cavity (101) is adapted to receive a battery cell (200), and the heat exchange cavity (102) is arranged around the periphery of the receiving cavity (101). The heat exchange cavity (102) is adapted to receive a heat exchange medium.

2. The heat exchange device (100) for a single battery cell according to claim 1, characterized in that, The housing (10) includes: A first housing (11) is annular and defines the receiving cavity (101) on its inner side; The second housing (12) includes an annular cylindrical wall (121) which is sleeved on the outside of the first housing (11). The second housing (12) cooperates with the first housing (11) to define the heat exchange cavity (102).

3. The heat exchange device (100) for a single battery cell according to claim 2, characterized in that, Both the first housing (11) and the second housing (12) extend along a first direction. The second housing (12) further includes a bottom wall (122) that covers one end of the cylindrical wall (121) in the first direction. The first housing (11) is disposed inside the second housing (12), and one end of the first housing (11) is sealed to the bottom wall (122) of the second housing (12).

4. The heat exchange device (100) for a single battery cell according to claim 3, characterized in that, The second housing (12) further includes a connecting ring (123), which is annular and disposed inside the second housing (12). The connecting ring (123) is connected to the bottom wall (122) of the second housing (12), and one end of the first housing (11) is fitted inside and sealed to the connecting ring (123).

5. The heat exchange device (100) for a single battery cell according to claim 4, characterized in that, The number of connecting rings (123) is multiple, and the multiple connecting rings (123) are arranged at radial intervals along the second housing (12).

6. The heat exchange device (100) for a single battery cell according to claim 4, characterized in that, A first sealing element (31) is also provided between the connecting ring (123) and the first housing (11). The first sealing element (31) extends in a ring shape along the circumference of the first housing (11) and is clamped between the connecting ring (123) and the first housing (11).

7. The heat exchange device (100) for a single battery cell according to claim 3, characterized in that, The first housing (11) and the second housing (12) cooperate to define the heat exchange cavity (102) which is open on one side in the first direction. The housing (10) further includes a cover plate (13), which is arranged opposite to the bottom wall (122) of the second housing (12) in the first direction. The cover plate (13) is connected to the second housing (12) and the first housing (11) and covers the open side of the heat exchange chamber (102).

8. The heat exchange device (100) for a single battery cell according to claim 7, characterized in that, The cover plate (13) extends in a ring shape along the circumference of the first housing (11), and the cover plate (13) is provided with a first flange (131) extending in the first direction. The first flange (131) extends in a ring shape along the circumference of the first housing (11), and the cover plate (13) is connected to the inner and outer shells of the first housing (11) through the first flange (131). The cover plate (13) is provided with a second flange (132) extending along the first direction. The second flange (132) extends in a ring along the circumference of the second housing (12). The cover plate (13) is connected to the inner and outer shell of the second housing (12) through the second flange (132).

9. The heat exchange device (100) for a single battery cell according to claim 8, characterized in that, A second sealing element (32) is also provided between the first flange (131) and the first housing (11). The second sealing element (32) extends in a ring along the circumference of the first housing (11) and is clamped between the first flange (131) and the first housing (11). The second flange (132) is connected to one end of the second housing (12) in an inner and outer sleeve, and a third sealing member (33) is provided between the second flange (132) and the second housing (12). The third sealing member (33) extends in a ring along the circumference of the second housing (12) and is clamped between the second flange (132) and the second housing (12).

10. The heat exchange device (100) for a single battery cell according to any one of claims 1-9, characterized in that, The heat exchange cavity (102) extends along a first direction and is annular along the circumference of the receiving cavity (101). The shell (10) is provided with a liquid inlet (14) and a liquid outlet (16), both of which are connected to the heat exchange cavity (102). Wherein, the first direction is the direction of gravity, the liquid inlet (14) and the liquid outlet (16) are respectively located at both ends of the heat exchange chamber (102) in the direction of gravity, and the liquid inlet (14) is located on the lower side of the liquid outlet (16) in the direction of gravity, and / or, the liquid inlet (14) and the liquid outlet (16) are arranged at intervals in the circumferential direction of the heat exchange chamber (102).

11. The heat exchange device (100) for a single battery cell according to claim 10, characterized in that, The inlet (14) is connected to an inlet pipe (15), and the outlet (16) is connected to an outlet pipe (17). The heat exchange device (100) further includes a temperature sensor (20), which is located on the inlet pipe (15) and / or the outlet pipe (17).

12. The heat exchange device (100) for a single battery cell according to any one of claims 1-9, characterized in that, The heat exchange device (100) further includes a heat insulation element, which covers at least the outer peripheral surface of the housing (10).

13. A testing device, characterized in that, Includes a heat exchange device (100) for a battery cell according to any one of claims 1-12.

14. A battery assembly (1000), characterized in that, include: A heat exchange device (100) for a battery cell according to any one of claims 1-12; A battery cell (200) is disposed in the receiving cavity (101), and the battery cell (200) is bonded to the inner wall of the receiving cavity (101) by thermally conductive adhesive.

15. A battery device, characterized in that, include: The housing and the battery assembly (1000) according to claim 14, wherein the battery assembly (1000) is disposed within the housing.

16. An electrical appliance, characterized in that, Includes the battery device according to claim 15.

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