Heat exchange device, battery pack and electric equipment

Abstract

The utility model relates to a heat exchange device, a battery pack and electric equipment, and the heat exchange device is used for carrying out heat exchange on a battery assembly and comprises a plurality of heat exchange pipelines which are arranged at intervals; and the structural adhesive is arranged between any two adjacent heat exchange pipelines and is connected with the two adjacent heat exchange pipelines. According to the heat exchange device, the multiple heat exchange pipelines are connected into a whole through the structural adhesive, the structural strength is enhanced, compared with connection through connecting plates in the prior art, the structural design is simplified, and the overall weight and cost of the heat exchange device are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery heat exchange, and particularly, to a heat exchange device, a battery pack, and an electrical device. Background Art

[0002] During the charging and discharging process of the battery cells in a power battery pack, heat is usually generated, leading to an increase in the working environment temperature. An excessively high temperature is likely to cause the battery cells to burn out, explode, etc., posing potential safety hazards. To avoid accidents, heat dissipation is often required during the charging and discharging process of the battery cells.

[0003] Currently, a corrugated tube type liquid cooling plate is often used to dissipate heat from the battery cells of a power battery pack. However, in related technologies, a connecting plate is provided to integrally connect the corrugated tube type liquid cooling plate to enhance the overall strength of the corrugated tube type liquid cooling plate. The connecting plate is welded to the corrugated tube type liquid cooling plate, which is heavy in weight and high in cost. Summary of the Utility Model

[0004] The purpose of the present disclosure is to provide a heat exchange device, a battery pack, and an electrical device, which can solve the above technical problems.

[0005] To achieve the above purpose, the present disclosure provides a heat exchange device for heat exchanging a battery assembly, including: a plurality of heat exchange pipelines arranged at intervals; and a structural adhesive disposed between any two adjacent heat exchange pipelines and connected to the two adjacent heat exchange pipelines.

[0006] Optionally, each heat exchange pipeline includes a plurality of heat exchange tubes, and the heat exchange tubes in the plurality of heat exchange pipelines are arranged at intervals to form a heat exchange surface for fitting with the outer wall of the battery assembly, and the structural adhesive is filled between the plurality of heat exchange tubes.

[0007] Optionally, the height of the structural adhesive is less than or equal to the height of the heat exchange tube.

[0008] Optionally, the structural adhesive is configured as a thermally conductive structural adhesive.

[0009] Optionally, it further includes a thermally conductive adhesive, and the battery assembly is connected to the heat exchange surface through the thermally conductive adhesive.

[0010] Optionally, each heat exchange pipeline has a separate liquid inlet end, and the plurality of heat exchange pipelines form a plurality of heat exchange regions for heat exchanging different heat generating regions of the battery assembly.

[0011] Optionally, there are two heat exchange pipelines, which are respectively a first heat exchange pipeline and a second heat exchange pipeline. The heat exchange area includes a first heat exchange area and a second heat exchange area. The first heat exchange pipeline forms the first heat exchange area for exchanging heat with the low-temperature area in the middle of the battery assembly, and the second heat exchange pipeline forms the second heat exchange area for exchanging heat with the high-temperature areas at both ends in the length direction of the battery assembly.

[0012] Optionally, the heat exchange device further includes a connector, and the connector is provided with a liquid inlet and a liquid outlet. The liquid inlet includes a first liquid inlet and a second liquid inlet. The liquid inlet end of the first heat exchange pipeline is connected to the first liquid inlet, and the liquid outlet end is connected to the liquid outlet. The liquid inlet end of the second heat exchange pipeline is connected to the second liquid inlet, and the liquid outlet end is connected to the liquid outlet.

[0013] Optionally, the heat exchange tube includes a first flat tube and a second flat tube. The first heat exchange pipeline includes a plurality of the first flat tubes, and the second heat exchange pipeline includes a plurality of the second flat tubes. The first flat tube and the second flat tube extend along a first direction of the battery assembly and are arranged at intervals along a second direction perpendicular to the first direction.

[0014] Optionally, the first heat exchange pipeline further includes a first shunt pipe and a first confluence pipe. The first shunt pipe is connected to the first liquid inlet and is connected to the water inlet ends of a plurality of the first flat tubes. The first confluence pipe is connected to the water outlet ends of a plurality of the first flat tubes and is connected to the liquid outlet.

[0015] Optionally, the second heat exchange pipeline further includes a liquid inlet pipe, a second shunt pipe, a second confluence pipe and a liquid outlet pipe. One end of the liquid inlet pipe is connected to the second liquid inlet, and the other end is connected to the second shunt pipe. The second shunt pipe is connected to the water inlet ends of a plurality of the second flat tubes. The second confluence pipe is connected to the water outlet ends of a plurality of the second flat tubes and is connected to the liquid outlet pipe. The liquid outlet pipe is connected to the liquid outlet.

[0016] Optionally, the liquid inlet pipe is connected to the middle of the second shunt pipe, and the liquid outlet pipe is connected to the middle of the second confluence pipe.

[0017] The second object of the present disclosure is to provide a battery pack, including: a battery assembly; and the above heat exchange device, and the battery assembly is connected to the heat exchange device.

[0018] The third object of the present disclosure is to provide an electrical equipment, including: the above battery pack.

[0019] With the above technical solution, in the heat exchange device provided by the present disclosure, multiple heat exchange pipelines are connected into a whole by structural adhesive, enhancing the structural strength. Compared with the connection by connecting plates in the related art, the present disclosure simplifies the structural design and reduces the overall weight and cost of the heat exchange device.

[0020] Other features and advantages of the present disclosure will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0022] Figure 1 is a schematic structural diagram of the battery pack in the present disclosure;

[0023] Figure 2 is a schematic structural diagram of the joint in the present disclosure;

[0024] Figure 3 is a top view of the battery pack in the present disclosure.

[0025] DESCRIPTION OF THE REFERENCE NUMERALS

[0026] 1. Battery assembly; 2. Thermal conductive adhesive;

[0027] 3. Heat exchange pipeline; 31; First heat exchange pipeline; 311. First shunt pipe; 312. First flat pipe; 313. First confluence pipe; 32. Second heat exchange pipeline; 321. Second shunt pipe; 322. Liquid inlet pipe; 323. Second flat pipe; 324. Second confluence pipe; 325. Liquid outlet pipe; 33. Heat exchange tube;

[0028] 4. Structural adhesive;

[0029] 5. Joint; 51. Liquid inlet; 511. First liquid inlet; 512. Second liquid inlet; 52. Liquid outlet;

[0030] 6. Heat exchange area; 61. Second heat exchange area; 62. First heat exchange area. DETAILED DESCRIPTION OF THE INVENTION

[0031] The following will describe in detail the specific implementation of the present disclosure with reference to the drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure and is not used to limit the present disclosure.

[0032] In the present disclosure, unless otherwise stated, the orientation terms such as "inner" and "outer" refer to the inner and outer of the contour of the component or structure itself. In addition, it should be noted that the terms such as "first" and "second" are used to distinguish one element from another, and do not have sequentiality and importance. In addition, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same elements.

[0033] As Figure 1 shown, the present disclosure provides a heat exchange device for heat exchanging the battery assembly 1, including: a plurality of heat exchange pipelines 3, which are arranged at intervals; and a structural adhesive 4, which is arranged between any two adjacent heat exchange pipelines 3 and is connected to the two adjacent heat exchange pipelines 3.

[0034] Through the above technical solution, in the heat exchange device provided by the present disclosure, the plurality of heat exchange pipelines 3 are connected into a whole by the structural adhesive 4 to perform heat exchange for the battery assembly 1, enhancing the structural strength. Compared with the related art where connection is made through a connecting plate, the present disclosure simplifies the structural design and reduces the overall weight and cost of the heat exchange device. Heat exchange can be cooling or heating. When the temperature of the battery assembly 1 is relatively high, the coolant in the heat exchange pipeline 3 cools down the battery assembly 1; because the charge and discharge performance of the battery assembly 1 is poor at low temperatures, when the outdoor temperature is relatively low, the battery assembly 1 is heated by the liquid heat method.

[0035] As Figure 1 shown, as an optional implementation manner, each heat exchange pipeline 3 includes a plurality of heat exchange tubes 33, and the heat exchange tubes 33 in the plurality of heat exchange pipelines 3 are arranged at intervals to form a heat exchange surface for fitting with the outer wall of the battery assembly 1. The structural adhesive 4 is filled between the plurality of heat exchange tubes 33. Of course, to increase the structural strength, the structural adhesive 4 can also be filled at other positions of the heat exchange pipeline 3. The structural adhesive 4 can not only connect the plurality of heat exchange pipelines 3, but also increase the structural strength between the plurality of heat exchange tubes 33 in each heat exchange pipeline 3. The heat exchange tubes 33 are arranged at intervals to form a heat exchange surface, and one side surface of the battery assembly 1 is attached to the heat exchange surface to perform heat exchange for the entire battery assembly 1; the reason for filling the structural adhesive 4 between the heat exchange tubes 33 is that there will be cavities between the heat exchange tubes 33, which are likely to retain foreign objects and cause abnormal noises.

[0036] Optionally, the height of the structural adhesive 4 is less than or equal to the height of the heat exchange tube 33, that is, the height of the structural adhesive 4 does not exceed the height of the heat exchange tube 33, so as to reduce the height of the heat exchange surface and thus reduce the overall height of the battery pack.

[0037] Optionally, it further includes a thermal conductive adhesive 2. The battery assembly 1 is connected to the heat exchange surface through the thermal conductive adhesive 2. The thermal conductive adhesive 2 transfers heat while connecting the battery assembly 1 and the heat exchange surface, so that the heat of the battery assembly 1 can be transferred to the heat exchange device for heat dissipation.

[0038] As an alternative implementation, the structural adhesive 4 is configured as a thermally conductive structural adhesive. The structural adhesive 4 not only has the function of connection, but also can play a role in heat conduction, increasing the heat exchange area and the heat dissipation area, and at the same time having the function of temperature equalization.

[0039] As Figures 1-3 shown, as an alternative implementation, each heat exchange pipeline 3 has a separate liquid inlet end. Multiple heat exchange pipelines 3 form multiple heat exchange areas 6 for different heat generating areas of the heat exchange battery assembly 1. Multiple heat exchange pipelines 3 form multiple heat exchange areas 6. Because the heat generation amounts of each area of the battery assembly 1 are different, if the coolant is evenly distributed to make the cooling capacity of each area of the battery assembly 1 the same, it will cause insufficient cooling capacity in the area with high heat generation and redundant cooling capacity in the area with low heat generation, resulting in poor cooling effect. Each heat exchange pipeline 3 in the present disclosure has a separate liquid inlet end, and the liquid inlet amount and the liquid inlet speed of each heat exchange pipeline 3 can be separately controlled to deliver different amounts of cooling capacity to different heat generating areas. The high heat generating area has more cooling capacity, and the low heat generating area has less or no cooling capacity, so as to achieve the zoned cooling of the battery assembly 1 and thus improve the cooling effect. Of course, in other embodiments, multiple heat exchange pipelines 3 can also share a single liquid inlet end, and more heat exchange pipes 33 can be provided in the area with high heat generation, and fewer heat exchange pipes 33 can be provided in the area with low heat generation.

[0040] Optionally, as Figure 3 shown, the number of heat exchange pipelines 3 can be set differently according to the models of different battery assemblies 1. Exemplarily, in the present disclosure, there are two heat exchange pipelines 3, and the two heat exchange pipelines 3 are respectively a first heat exchange pipeline 31 and a second heat exchange pipeline 32. The heat exchange area 6 includes a first heat exchange area 62 and a second heat exchange area 61. The first heat exchange pipeline 31 forms the first heat exchange area 62 for heat exchanging the low temperature area in the middle of the battery assembly 1, and the second heat exchange pipeline 32 forms the second heat exchange area 61 for heat exchanging the high temperature areas at both ends in the length direction of the battery assembly 1. Because the pole column areas at both ends of the battery assembly 1 generate more heat, while the middle part generates less heat, the first heat exchange pipeline 31 forms the first heat exchange area 62 for heat exchanging the middle part of the battery assembly 1, and the second heat exchange pipeline 32 forms the second heat exchange area 61 for heat exchanging both ends of the battery assembly 1. The second heat exchange pipeline 32 simultaneously exchanges heat for both ends of the battery assembly 1 without adding additional heat exchange pipelines 3. The cooling capacity of the second heat exchange pipeline 32 is greater than that of the first heat exchange pipeline 31.

[0041] In addition, as Figures 1-2As shown, the heat exchange device further includes a connector 5, on which there are a liquid inlet 51 and a liquid outlet 52. The liquid inlet 51 includes a first liquid inlet 511 and a second liquid inlet 512. The liquid inlet end of the first heat exchange pipeline 31 is connected to the first liquid inlet 511, and the liquid outlet end is connected to the liquid outlet 52. The liquid inlet end of the second heat exchange pipeline 32 is connected to the second liquid inlet 512, and the liquid outlet end is connected to the liquid outlet 52. Both the liquid inlet 51 and the liquid outlet 52 are integrated on the connector 5, with high integration and convenient connection. The liquid outlet ends of the two heat exchange pipelines 3 are integrated into one liquid outlet 52. For example, they can be converged through a confluence pipe, reducing the occupied space and the difficulty of coolant recovery.

[0042] Among them, as Figure 1 shown, the heat exchange tube 33 includes a first flat tube 312 and a second flat tube 323. The first heat exchange pipeline 31 includes multiple first flat tubes 312, and the second heat exchange pipeline 32 includes multiple second flat tubes 323. The first flat tube 312 and the second flat tube 323 extend along the first direction of the battery module 1 and are arranged at intervals along the second direction perpendicular to the first direction. The first direction is the width direction of the battery module 1, and the second direction is the length direction of the battery module 1. The heat exchange amounts of the first heat exchange pipeline 31 and the second heat exchange pipeline 32 are different, so the heat exchange amounts of the first flat tube 312 and the second flat tube 323 are also different. The first flat tube 312 and the second flat tube 323 are arranged at intervals along the length direction of the battery module 1 to exchange heat for different heat generation areas distributed along the length direction of the battery module 1.

[0043] Optionally, as Figure 1 shown, the first heat exchange pipeline 31 further includes a first shunt tube 311 and a first confluence tube 313. The first shunt tube 311 is connected to the first liquid inlet 511 and the water inlet ends of multiple first flat tubes 312. The first confluence tube 313 is connected to the water outlet ends of multiple first flat tubes 312 and the liquid outlet 52. The first shunt tube 311 and the first confluence tube 313 are respectively arranged on both sides of the first flat tube 312 and are perpendicular to the first flat tube 312. That is, the first shunt tube 311 and the first confluence tube 313 are arranged on both sides of the heat exchange surface. The first shunt tube 311 evenly distributes the heat exchange liquid entering from the first liquid inlet 511 into multiple first flat tubes 312, and the first confluence tube 313 collects the heat exchange liquid in multiple first flat tubes 312 and discharges it from the liquid outlet 52.

[0044] Optionally, as Figure 1As shown, the second heat exchange pipeline 32 further includes a liquid inlet pipe 322, a second shunt pipe 321, a second confluence pipe 324, and a liquid outlet pipe 325. One end of the liquid inlet pipe 322 is connected to the second liquid inlet 512, and the other end is connected to the second shunt pipe 321. The second shunt pipe 321 is connected to the water inlet ends of multiple second flat pipes 323. The second confluence pipe 324 is connected to the water outlet ends of multiple second flat pipes 323 and is connected to the liquid outlet pipe 325. The liquid outlet pipe 325 is connected to the liquid outlet 52. The second shunt pipe 321 and the second confluence pipe 324 are respectively arranged on both sides of the second flat pipe 323 and are perpendicular to the second flat pipe 323, that is, the second shunt pipe 321 and the second confluence pipe 324 are arranged on both sides of the heat exchange surface. The liquid inlet pipe 322 and the liquid outlet pipe 325 are connected to the sides of the second shunt pipe 321 and the second confluence pipe 324 close to the battery assembly 1 to reduce the occupied space. The coolant enters the second shunt pipe 321 through the liquid inlet pipe 322, and the second shunt pipe 321 evenly distributes the coolant into multiple second flat pipes 323. The coolant in the multiple second flat pipes 323 is concentrated in the second confluence pipe 324, and is discharged through the connection between the liquid outlet pipe 325 and the liquid outlet 52.

[0045] Among them, as Figure 1 shown, the liquid inlet pipe 322 is connected to the middle of the second shunt pipe 321, and the liquid outlet pipe 325 is connected to the middle of the second confluence pipe 324. Since the second heat exchange area 61 formed by the second heat exchange pipeline 32 is located at both ends of the battery assembly 1, in order to ensure the flow of the second flat pipes 323 at both ends, the liquid inlet pipe 322 is connected to the middle of the second shunt pipe 321. Similarly, in order to ensure the same liquid outlet volume of the second flat pipes 323 at both ends, the liquid outlet pipe 325 is connected to the middle of the second confluence pipe 324, so as to achieve consistent shunting in the two high-heat-generation areas, uniform heat dissipation, and reduce the temperature difference.

[0046] As Figure 1 shown, the second object of the present disclosure is to provide a battery pack, including: a battery assembly 1; and the above heat exchange device. The battery assembly 1 is connected to the heat exchange device. The heat exchange device of the present disclosure is connected into a whole through a structural adhesive 4 to enhance the structural strength. Compared with the connection through a connecting plate in the related art, the present disclosure simplifies the structural design and reduces the overall weight and cost of the heat exchange device.

[0047] The third object of the present disclosure is to provide an electrical device. For example, the electrical device can be a vehicle, an energy storage system, etc. The electrical device includes: the above battery pack, and the structure of the battery pack is simple and the weight is light.

[0048] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0049] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0050] Furthermore, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A heat exchange device for heat exchanging a battery assembly, characterized in that, Comprising: A plurality of heat exchange pipelines, with the plurality of heat exchange pipelines arranged at intervals; Structural adhesive, which is arranged between any two adjacent heat exchange pipelines and is connected to the two adjacent heat exchange pipelines.

2. The heat exchange device according to claim 1, characterized in that, Each heat exchange pipeline includes a plurality of heat exchange tubes. The heat exchange tubes in the plurality of heat exchange pipelines are arranged at intervals to form a heat exchange surface for fitting with the outer wall of the battery assembly, and the structural adhesive is filled between the plurality of heat exchange tubes.

3. The heat exchange device according to claim 2, characterized in that The height of the structural adhesive is less than or equal to the height of the heat exchange tubes.

4. The heat exchange device according to any one of claims 1 to 3, characterized in that, The structural adhesive is configured as a thermally conductive structural adhesive.

5. The heat exchange device according to claim 2, wherein, It further includes a thermally conductive adhesive, and the battery assembly is connected to the heat exchange surface through the thermally conductive adhesive.

6. The heat exchange device according to claim 2, wherein, Each heat exchange pipeline has a separate liquid inlet end, and the plurality of heat exchange pipelines form a plurality of heat exchange regions for exchanging heat with different heat-generating regions of the battery assembly.

7. The heat exchange device according to claim 6, wherein, There are two heat exchange pipelines, which are respectively a first heat exchange pipeline and a second heat exchange pipeline. The heat exchange regions include a first heat exchange region and a second heat exchange region. The first heat exchange pipeline forms the first heat exchange region for exchanging heat with the low-temperature region in the middle of the battery assembly, and the second heat exchange pipeline forms the second heat exchange region for exchanging heat with the high-temperature regions at both ends in the length direction of the battery assembly.

8. The heat exchange device according to claim 7, characterized in that, The heat exchange device further includes a connector, and the connector is provided with a liquid inlet and a liquid outlet. The liquid inlet includes a first liquid inlet and a second liquid inlet. The liquid inlet end of the first heat exchange pipeline is connected to the first liquid inlet, and the liquid outlet end is connected to the liquid outlet. The liquid inlet end of the second heat exchange pipeline is connected to the second liquid inlet, and the liquid outlet end is connected to the liquid outlet.

9. The heat exchange device according to claim 8, characterized in that, The heat exchange tube includes a first flat tube and a second flat tube. The first heat exchange pipeline includes a plurality of the first flat tubes, and the second heat exchange pipeline includes a plurality of the second flat tubes. The first flat tube and the second flat tube extend along a first direction of the battery assembly and are arranged at intervals along a second direction perpendicular to the first direction.

10. The heat exchange device according to claim 9, wherein, The first heat exchange pipeline further includes a first flow dividing pipe and a first flow collecting pipe. The first flow dividing pipe is connected to the first liquid inlet and is connected to the water inlet ends of the plurality of first flat tubes. The first flow collecting pipe is connected to the water outlet ends of the plurality of first flat tubes and is connected to the liquid outlet.

11. The heat exchange device according to claim 9, characterized in that, The second heat exchange pipeline further includes a liquid inlet pipe, a second flow dividing pipe, a second flow collecting pipe, and a liquid outlet pipe. One end of the liquid inlet pipe is connected to the second liquid inlet, and the other end is connected to the second flow dividing pipe. The second flow dividing pipe is connected to the water inlet ends of the plurality of second flat tubes. The second flow collecting pipe is connected to the water outlet ends of the plurality of second flat tubes and is connected to the liquid outlet pipe. The liquid outlet pipe is connected to the liquid outlet.

12. The heat exchange device according to claim 11, characterized in that, The liquid inlet pipe is connected to the middle of the second flow dividing pipe, and the liquid outlet pipe is connected to the middle of the second flow collecting pipe.

13. A battery pack, characterized in that, Comprising: A battery assembly; And The heat exchange device according to any one of claims 1-12, wherein the battery assembly is connected to the heat exchange device.

14. An electrical device, characterized in that, Comprising: The battery pack according to claim 13.

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