Thermal management assembly and battery pack

Abstract

The embodiment of the utility model provides a thermal management assembly and a battery pack. The heat management assembly comprises a plurality of liquid cooling plates arranged at intervals in the first direction, a gap used for containing the battery monomers is formed between every two adjacent liquid cooling plates, protrusions facing the gaps are arranged on the liquid cooling plates, cooling channels are arranged in the protrusions, and each cooling channel is provided with a liquid inlet and a liquid outlet; the cooling channel comprises a plurality of sub-channels extending in the second direction and a plurality of connecting flow channels extending in the third direction, the connecting flow channels are arranged at intervals in the second direction, the sub-channels are arranged at intervals in the third direction, and the sub-channels are communicated through the connecting flow channels. The liquid cooling plate in the hot pipeline assembly can be in full contact with the battery monomers, has relatively high heat exchange efficiency and relatively good temperature equalization performance, and can meet the heat dissipation requirement of the battery pack.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a thermal management assembly and a battery pack. BACKGROUND

[0002] With the development of science and technology, battery packs gradually develop towards advanced technologies of high energy density, high safety and fast charging. Correspondingly, the number of battery monomers in the battery pack is also increasing, and the heat dissipated by the battery pack in operation is also increasing, so the cooling capacity requirement of the battery pack is also increasing.

[0003] In the prior art, a liquid cooling plate is usually arranged at the bottom of the battery pack to achieve the function of heat dissipation. However, this heat dissipation mode is difficult to meet the heat dissipation requirement of the battery pack. CONTENT OF THE INVENTION

[0004] The application aims to provide a thermal management assembly and a battery pack to solve the problem that the heat dissipation requirement of the existing battery pack is difficult to meet.

[0005] In order to solve the above technical problems, the application is implemented as follows:

[0006] In a first aspect, the application discloses a thermal management assembly, which comprises:

[0007] a plurality of liquid cooling plates arranged at intervals in a first direction, a gap for accommodating a battery monomer being formed between two adjacent liquid cooling plates, a protrusion being arranged on the liquid cooling plate and facing the gap, a cooling channel being arranged in the protrusion, the cooling channel being provided with an inlet and an outlet; the cooling channel comprises a plurality of sub-channels extending in a second direction and a plurality of connecting flow channels extending in a third direction, the plurality of connecting flow channels being arranged at intervals in the second direction, the plurality of sub-channels being arranged at intervals in the third direction, and the sub-channels being communicated through the connecting flow channels.

[0008] Optionally, the liquid cooling plate comprises a first liquid cooling plate and a second liquid cooling plate arranged oppositely in the first direction; wherein the protrusion is arranged on at least one of the first liquid cooling plate and the second liquid cooling plate.

[0009] Optionally, a first protruding part is arranged on the first liquid cooling plate and protrudes in a direction away from the second liquid cooling plate.

[0010] A second protruding part is arranged on the second liquid cooling plate and protrudes in a direction away from the first liquid cooling plate, and the second protruding part and the first protruding part enclose the cooling channel.

[0011] Optionally, the first liquid cooling plate and the second liquid cooling plate are connected by welding.

[0012] Optionally, the first liquid cooling plate and the second liquid cooling plate have solder marks on their circumferential edges; and / or, the protrusions are multiple, the multiple protrusions are spaced apart along a third direction and define multiple planar portions, the planar portions are provided with solder marks, and the third direction intersects with the first direction.

[0013] Optionally, the thermal management component further includes:

[0014] A liquid inlet pipe is connected to a liquid inlet on the plurality of liquid cooling plates to allow cooling medium to be introduced into the cooling channel through the liquid inlet.

[0015] And a liquid outlet pipe, which is connected to the liquid outlet on the plurality of liquid cooling plates, so as to introduce the cooling medium in the cooling channel into the liquid outlet pipe through the liquid outlet.

[0016] Optionally, along the second direction, the liquid cooling plate includes a first end and a second end disposed opposite to each other, and the second direction intersects the first direction; wherein,

[0017] The liquid inlet pipe is connected to the first end of the liquid cooling plate, and the liquid outlet pipe is connected to the second end of the liquid inlet pipe;

[0018] Alternatively, both the inlet pipe and the outlet pipe are connected to the first end of the liquid cooling plate.

[0019] Optionally, at least two connecting channels are provided at one end of the sub-channel along the second direction, and the liquid flows in opposite directions in the at least two connecting channels.

[0020] Secondly, this application also discloses a battery pack, the battery pack comprising: a plurality of battery cells and the thermal management component described in any of the above claims; wherein,

[0021] At least one of the battery cells is disposed within the gap.

[0022] Optionally, the battery cell has a first surface with the largest area, and the first surface is bonded to the liquid cooling plate.

[0023] In this embodiment, the thermal management component may include a plurality of liquid cooling plates spaced apart along a first direction. A gap is formed between adjacent liquid cooling plates to accommodate individual battery cells, allowing the liquid cooling plates to make full contact with the battery cells, resulting in high heat exchange efficiency, good temperature uniformity, and meeting the heat dissipation requirements of the battery pack. Furthermore, by dividing the cooling channel into multiple sub-channels extending along a second direction and spaced apart along a third direction, the length of the cooling channel can be extended as much as possible within a limited space. This extends the flow path of the cooling medium within the cooling channel, effectively removing heat from the battery cells and improving the heat dissipation effect of the liquid cooling plates.

[0024] 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

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the structure of a battery pack that uses a thermal management component described in an embodiment of this application;

[0027] Figure 2 yes Figure 1 The diagram shows the structure of the thermal management components in the battery pack.

[0028] Figure 3 yes Figure 2 The diagram shows the structure of the liquid cooling plate in the thermal management assembly.

[0029] Figure 4 yes Figure 3 The diagram shows an exploded view of a liquid cooling plate.

[0030] Figure 5 yes Figure 4 A schematic diagram of the structure of the first liquid cooling plate in the liquid cooling plate shown;

[0031] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure of the first liquid cooling plate at section A-A;

[0032] Figure 7 yes Figure 6 An enlarged structural schematic diagram of the first liquid cooling plate at position B is shown;

[0033] Figure 8 yes Figure 3 The diagram shows the structure of the cooling channel inside the liquid cooling plate.

[0034] Figure 9 yes Figure 3 A partial structural diagram of the cooling channels within the liquid cooling plate is shown.

[0035] Figure 10 This is a schematic diagram of the structure of a battery pack that applies another thermal management component described in the embodiments of this application;

[0036] Figure 11 yes Figure 10 The diagram shows the structure of the thermal management components in the battery pack.

[0037] Figure 12 yes Figure 11 The diagram shows the structure of the liquid cooling plate in the thermal management assembly.

[0038] Figure 13 yes Figure 12 The diagram shows an exploded view of a liquid cooling plate.

[0039] Figure 14 yes Figure 13 A schematic diagram of the structure of the first liquid cooling plate in the liquid cooling plate shown;

[0040] Figure 15 yes Figure 14 A schematic diagram of the cross-sectional structure of the first liquid cooling plate (CC section).

[0041] Figure 16 yes Figure 12 An enlarged structural schematic diagram of the first liquid cooling plate at position D is shown;

[0042] Figure 17 yes Figure 12 The diagram shows the structure of the cooling channel inside the liquid cooling plate.

[0043] Figure 18 yes Figure 12 A partial structural diagram of the cooling channels within the liquid cooling plate is shown.

[0044] Reference numerals: 10 - liquid cooling plate, 100 - cooling channel, 1000 - sub-channel, 1001 - liquid inlet, 1002 - liquid outlet, 1003 - connecting flow channel, 101 - first liquid cooling plate, 1010 - first protrusion, 102 - second liquid cooling plate, 1020 - second protrusion, 103 - first end, 104 - second end, 105 - protrusion, 11 - liquid inlet pipe, 12 - liquid outlet pipe, 20 - battery cell, x - first direction, y - second direction, z - third direction. Detailed Implementation

[0045] The embodiments of this utility model will now be described in detail. 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 are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0046] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0047] 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.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] Reference Figure 1 The diagram illustrates a battery pack structure using a thermal management component described in an embodiment of this application. Figure 2 , showed Figure 1 The schematic diagram of the thermal management component in the battery pack shown is for reference only. Figure 3 , showed Figure 2 The diagram shows the structure of the liquid cooling plate in the thermal management assembly.

[0050] The thermal management component described in this application embodiment may specifically include: a plurality of liquid cooling plates 10 spaced apart along a first direction x, with a gap formed between adjacent liquid cooling plates 10 for accommodating battery cells 20; a protrusion 105 is provided on the liquid cooling plate 10 facing the gap; a cooling channel 100 is provided within the protrusion 105; the cooling channel 100 is provided with an inlet 1001 and an outlet 1002. In specific applications, the inlet 1001 can be used to introduce cooling medium into the cooling channel 100, and the outlet 1002 can be used to export the cooling medium from the cooling channel 100.

[0051] In this embodiment, the thermal management component may include a plurality of liquid cooling plates 10 spaced apart along a first direction x. A gap is formed between adjacent liquid cooling plates 10 to accommodate a battery cell 20, allowing the liquid cooling plate 10 to make full contact with the battery cell 20, resulting in high heat exchange efficiency, good temperature uniformity, and meeting the heat dissipation requirements of the battery pack. Furthermore, since the liquid cooling plate 10 has a protrusion 105 facing the gap, and a cooling channel 100 is provided within the protrusion 105, the cooling channel 100 of the protrusion 105 can absorb the spatial compression caused by the expansion of the battery cell 20, acting as a buffer to improve the service life of the battery pack.

[0052] In practical applications, the battery cell 20 is typically a rectangular battery cell 20, and the battery cell 20 can have a first surface with the largest area. The liquid cooling plate 10 in the thermal management assembly can fully contact the two first surfaces of the battery cell 20, so that the cooling medium flowing through the liquid cooling plate 10 can fully exchange heat with the battery cell 20, thereby improving the heat dissipation efficiency of the battery cell 20.

[0053] Reference Figure 8 , showed Figure 3 The schematic diagram of the cooling channel structure inside the liquid cooling plate is shown below. Figure 9 , showed Figure 3 The diagram shows a partial structural representation of the cooling channels within the liquid cooling plate, as shown below. Figure 8 , Figure 9As shown, the cooling channel 100 may include multiple sub-channels 1000 extending along a second direction y and multiple connecting channels 1003 extending along a third direction z. The multiple connecting channels 1003 are spaced apart along the second direction y, and the multiple sub-channels 1000 are spaced apart along the third direction z. The sub-channels 1000 are connected by the connecting channels 1003; wherein the third direction z intersects with both the first direction x and the second direction y. In specific applications, by dividing the cooling channel 100 into multiple sub-channels 1000 extending along the second direction y and spaced these sub-channels 1000 along the third direction z, the length of the cooling channel 100 can be extended as much as possible within a limited space. This extends the flow path of the cooling medium within the cooling channel 100, effectively removing heat from the battery cell 20 and improving the heat dissipation effect of the liquid cooling plate 10.

[0054] Compared to traditional aluminum extrusion processes, the flow channels described in this application embodiment can overlap in the second direction y to further enhance the layout flexibility of the flow channels.

[0055] like Figure 8 As shown, at least two connecting channels 1003 are provided at one end of the sub-channel 1000 along the second direction y, and the liquid in the at least two connecting channels 1003 flows in opposite directions to form a complete cooling channel 100.

[0056] Reference Figure 4 , showed Figure 3 The diagram shown is an exploded view of a liquid cooling plate. Figure 4 As shown, the liquid cooling plate 10 may include a first liquid cooling plate 101 and a second liquid cooling plate 102 disposed opposite to each other along a first direction x; wherein, the protrusion 105 may be disposed on at least one of the first liquid cooling plate and the second liquid cooling plate. Since the first liquid cooling plate 101 and the second liquid cooling plate 102 are of a split structure, the structure and processing technology of the first liquid cooling plate 101 and the second liquid cooling plate 102 are relatively simple, which can greatly improve the processing efficiency of the liquid cooling plate 10 and reduce the processing cost of the liquid cooling plate 10.

[0057] For example, the protrusion 105 can be provided only on the first liquid cooling plate 101 or the second liquid cooling plate 102, or the protrusion 105 can be provided on both the first liquid cooling plate 101 and the second liquid cooling plate 102. This application embodiment does not limit this.

[0058] Optionally, the first liquid cooling plate 101 is provided with a first protrusion 1010 protruding in a direction away from the second liquid cooling plate 102; the second liquid cooling plate 102 is provided with a second protrusion 1020 protruding in a direction away from the first liquid cooling plate 101, and the second protrusion 1020 and the first protrusion 1010 enclose to form a cooling channel 100.

[0059] In specific applications, by dividing the liquid cooling plate 10 into a first liquid cooling plate 101 and a second liquid cooling plate 102 spaced apart along the first direction x, and forming the cooling channel 100 by the first protrusion 1010 on the first liquid cooling plate 101 and the second protrusion 1020 on the second liquid cooling plate 102, the cooling channel 100 can protrude towards the battery cell 20. This facilitates sufficient heat exchange between the cooling medium flowing through the cooling channel 100 and the battery cell 20, improving heat exchange efficiency. Furthermore, the protruding cooling channel 100 absorbs the spatial compression caused by the expansion of the battery cell 20, acting as a buffer and improving the service life of the battery pack.

[0060] Optionally, both the first protrusion 1010 and the second protrusion 1020 are stamped protrusions; the first liquid cooling plate 101 and the second liquid cooling plate 102 are welded together. That is, the first protrusion 1010 on the first liquid cooling plate 101 and the second protrusion 1020 on the second liquid cooling plate 102 can be obtained first by stamping, and then the first liquid cooling plate 101 and the second liquid cooling plate 102 can be welded together. Since stamping is a high-precision and high-efficiency processing technology, when the first liquid cooling plate 101 and the second liquid cooling plate 102 are processed by stamping, the processing precision and efficiency of the first liquid cooling plate 101 and the second liquid cooling plate 102 can be correspondingly high. And by using a welding process to connect the first liquid cooling plate 101 and the second liquid cooling plate 102, a reliable connection between the first liquid cooling plate 101 and the second liquid cooling plate 102 can be achieved. For example, the welding process may include, but is not limited to, brazing.

[0061] Optionally, the first liquid cooling plate 101 and the second liquid cooling plate 102 are provided with solder marks on their circumferential edges; and / or, the protrusions 105 are multiple, the multiple protrusions 105 are spaced apart along a third direction z and define multiple planar portions, the planar portions are provided with solder marks such that the solder marks are arranged to avoid the protrusions 105, and the third direction z intersects with the first direction x.

[0062] In practical applications, the first liquid cooling plate 101 and the second liquid cooling plate 102 can be connected by soldering. By avoiding the protrusion 105 on the first liquid cooling plate 101 and the second liquid cooling plate 102, the integrity of the cooling channel 100 within the protrusion 105 can be improved, and the welding operation can be prevented from affecting the flow of the cooling medium within the cooling channel 100. In specific applications, when the soldering is located only at the circumferential edge of the first liquid cooling plate 101 and the second liquid cooling plate 102, or only on the flat portion between the protrusion 105 of the first liquid cooling plate 101 and the second liquid cooling plate 102, the soldering can be positioned to avoid the protrusion 105 as much as possible, so as to avoid the welding operation affecting the integrity of the cooling channel 100. Simultaneously placing the soldering at both the circumferential edge and the middle position of the first liquid cooling plate 101 and the second liquid cooling plate 102 can improve the connection reliability of the first liquid cooling plate 101 and the second liquid cooling plate 102.

[0063] It should be noted that, in specific applications, those skilled in the art can set the welding position at the edge and / or middle position of the first liquid cooling plate 101 and the second liquid cooling plate 102 according to actual needs. This application embodiment does not specifically limit this.

[0064] Reference Figure 5 , showed Figure 4 The schematic diagram of the structure of the first liquid cooling plate shown is provided below. Figure 6 , showed Figure 5 The schematic diagram of the cross-sectional structure of the first liquid cooling plate along section A-A shown is provided by reference. Figure 7 , showed Figure 6 The diagram shows an enlarged view of the first liquid cooling plate at position B. Figure 7 As shown, the thickness of the first liquid cooling plate 101 along the first direction x is D1 mm, and the value of D1 ranges from 0.1 to 3. In specific applications, when the thickness D1 of the first liquid cooling plate 101 along the first direction x is 0 greater than or equal to 0.1 mm and less than or equal to 0.3 mm, it is possible to achieve better structural strength and improve the structural stability of the first liquid cooling plate 101, while maintaining a lighter weight and reducing the structural and processing costs of the first liquid cooling plate 101.

[0065] Similarly, the thickness of the second liquid cooling plate 102 along the first direction x is D2mm, and the value of D2 is in the range of 0.1≤D2≤3. The thickness of the second liquid cooling plate 102 can be the same as or different from the thickness of the first liquid cooling plate 101, and this embodiment does not limit this.

[0066] For example, the specific values ​​of D1 and D2 may include, but are not limited to, 0.1 mm, 0.15 mm, 0.22 mm or 0.3 mm, etc. The embodiments of this application do not specifically limit the values ​​of D1 and D2.

[0067] like Figure 7 As shown, the protrusion 105 protrudes from the surface of the liquid cooling plate 10 by a height of D3 mm, where D3 ranges from 0.1 to 8. In practical applications, when the height of the protrusion 105 is greater than or equal to 0.1 mm and less than or equal to 8 mm, the cross-sectional dimensions of the cooling channel 100 at the protrusion 105 are more reasonable, achieving better heat dissipation. Simultaneously, the overall dimensions of the liquid cooling plate 10 are also more reasonable, facilitating the connection of the battery cell 20 within the gap between two adjacent liquid cooling plates 10.

[0068] For example, the specific value of D3 may include, but is not limited to, 0.1 mm, 2 mm, 5.6 mm or 8 mm, etc. The embodiments of this application do not specifically limit the value of D3.

[0069] In some optional embodiments of this application, the minimum wall thickness of the cooling channel 100 along the first direction x is D4mm, and the height of the protrusion 105 protruding from the surface of the liquid cooling plate 10 is D3mm, satisfying: 0.5≤D3 / D4≤1.5. In practical applications, the smaller the value of D3 / D4, the larger the wall thickness of the cooling channel 100 and the smaller the height of the protrusion 105. In this case, the compressibility of the protrusion 105 is reduced less, and the volume utilization rate is increased. Conversely, the larger the value of D3 / D4, the smaller the wall thickness of the cooling channel 100 and the larger the height of the protrusion 105. In this case, the volume utilization rate is reduced, and the compressibility is increased. When satisfying: 0.5≤D3 / D4≤1.5, both the compressibility of the protrusion 105 and the volume utilization rate can be balanced.

[0070] For example, the specific values ​​of D3 / D4 may include, but are not limited to, 0.5, 0.8, 1.2 or 1.5, etc. The embodiments of this application do not specifically limit the values ​​of D3 / D4.

[0071] like Figure 1 and Figure 2As shown, the thermal management component may further include: a liquid inlet pipe 11, which is connected to liquid inlets 1001 on a plurality of liquid cooling plates 10, to introduce cooling medium into the cooling channel 100 through the liquid inlets 1001; and a liquid outlet pipe 12, which is connected to liquid outlets 1002 on a plurality of liquid cooling plates 10, to guide the cooling medium in the cooling channel 100 into the liquid outlet pipe 12 through the liquid outlets 1002. That is, the cooling medium can enter the cooling channel 100 of the liquid cooling plate 10 through the liquid inlet pipe 11, flow through the cooling channel 100 and then flow out from the liquid outlet pipe 12 to achieve circulation of the cooling medium. In this embodiment, a plurality of liquid cooling plates 10 spaced apart along the first direction x can share a single liquid inlet pipe 11 and a single liquid outlet pipe 12 to simplify the structure of the thermal management component.

[0072] like Figure 3 As shown, along the second direction y, the liquid cooling plate 10 may include a first end 103 and a second end 104 disposed opposite to each other, and the second direction y intersects the first direction x. Figure 3 As shown, the liquid inlet 1001 of the liquid cooling plate 10 is located near the first end 103, and the liquid outlet 1002 of the liquid cooling plate 10 is located near the second end 104. The inlet pipe 11 can be connected to the first end 103 of the liquid cooling plate 10, and the outlet pipe 12 can be connected to the second end 104 of the inlet pipe 11. In practical applications, connecting the inlet pipe 11 and the outlet pipe 12 to the first end 103 and the second end 104 of the liquid cooling plate 10 respectively helps to isolate the inlet pipe 11 and the outlet pipe 12, further improving the heat dissipation efficiency of the thermal management component.

[0073] like Figure 9 As shown, the height of the liquid cooling plate 10 along the third direction is H1 mm, and the height of the sub-channel 1000 along the third direction is H2 mm, satisfying: 1 ≤ H1 / H2 ≤ 100. In specific applications, when the value of H1 / H2 is greater than or equal to 1 and less than or equal to 100, sufficient cooling medium can flow through a single sub-channel 1000, resulting in good heat exchange efficiency. At the same time, a sufficient number of sub-channels 1000 can be set in the third direction of the liquid cooling plate 10, so that the liquid cooling plate 10 has good overall heat exchange efficiency.

[0074] For example, the value of H1 / H2 can be any one of 1, 45, 82 or 100. This application embodiment does not specifically limit the value of H1 / H2.

[0075] Reference Figure 10 This diagram illustrates a battery pack structure employing another thermal management component described in an embodiment of this application. (Refer to...) Figure 11 , showed Figure 10The schematic diagram of the thermal management component in the battery pack shown is for reference only. Figure 12 , showed Figure 11 The schematic diagram of the liquid cooling plate in the thermal management assembly shown is for reference only. Figure 13 , showed Figure 12 The diagram shown is an exploded view of a liquid cooling plate; see reference. Figure 14 , showed Figure 13 The schematic diagram of the structure of the first liquid cooling plate shown is provided below. Figure 15 , showed Figure 14 The schematic diagram of the cross-sectional structure of the first liquid cooling plate (CC section) shown is provided by reference. Figure 16 , showed Figure 12 The diagram shows an enlarged view of the first liquid cooling plate at position D. (Refer to...) Figure 17 , showed Figure 12 The schematic diagram of the cooling channel structure inside the liquid cooling plate is shown below. Figure 18 , showed Figure 12 A partial structural diagram of the cooling channels within the liquid cooling plate is shown. Figure 12 As shown, both the inlet pipe 11 and the outlet pipe 12 are connected to the first end 103 of the liquid cooling plate 10. Figure 12 As shown, the liquid inlet 1001 and liquid outlet 1002 of the liquid cooling plate 10 are both located close to the first end 103, so both the liquid inlet pipe 11 and the liquid outlet pipe 12 can be connected to the first end 103 of the liquid cooling plate 10. In practical applications, connecting both the liquid inlet pipe 11 and the liquid outlet pipe 12 to the first end 103 of the liquid cooling plate 10 helps to improve the integration of the thermal management component and reduce its size.

[0076] Optionally, when both the liquid inlet 1001 and the liquid outlet 1002 of the liquid cooling plate 10 are located close to the second end 104, the liquid inlet pipe 11 and the liquid outlet pipe 12 can both be connected to the second end 104 of the liquid cooling plate 10. This embodiment does not specifically limit the positions of the liquid inlet pipe 11 and the liquid outlet pipe 12.

[0077] In summary, the thermal management component described in the embodiments of this application may include at least the following advantages:

[0078] In this embodiment, the thermal management component may include a plurality of liquid cooling plates spaced apart along a first direction. A gap is formed between adjacent liquid cooling plates to accommodate individual battery cells, allowing the liquid cooling plates to make full contact with the battery cells, resulting in high heat exchange efficiency, good temperature uniformity, and meeting the heat dissipation requirements of the battery pack. Furthermore, since the liquid cooling plates have protrusions facing the gaps, and cooling channels are provided within these protrusions, the cooling channels can absorb the spatial compression caused by the expansion of the battery cells, acting as a buffer to improve the service life of the battery pack.

[0079] This application embodiment also provides a battery pack, which may specifically include: a plurality of battery cells 20 and the thermal management component described in any of the above claims; wherein, the thermal management component may include a plurality of liquid cooling plates 10 arranged sequentially at intervals along a first direction x, with a gap formed between two adjacent liquid cooling plates 10, and a battery cell 20 disposed within one of the gaps.

[0080] In this embodiment, the thermal management component may include a plurality of liquid cooling plates 10 arranged at intervals along a first direction x. A gap is formed between adjacent liquid cooling plates 10 to accommodate a battery cell 20, allowing the liquid cooling plate 10 to fully contact the battery cell 20, resulting in high heat exchange efficiency, good temperature uniformity, and meeting the heat dissipation requirements of the battery pack. Furthermore, since the liquid cooling plate 10 has a protrusion 105 facing the gap, and a cooling channel 100 is provided at the protrusion 105, the cooling channel 100 of the protrusion 105 can absorb the spatial compression caused by the expansion of the battery cell 20, acting as a buffer to improve the service life of the battery pack.

[0081] In practical applications, the battery cell 20 is typically a rectangular battery cell 20. The battery cell 20 may have a first surface with the largest area. The first surface is bonded to the liquid cooling plate 10 so that the liquid cooling plate 10 can fully contact the two first surfaces of the battery cell 20, thereby improving the heat dissipation efficiency of the thermal management component for the battery cell 20.

[0082] For example, the first surface and the liquid cooling plate 10 can be bonded together by an adhesive medium such as thermally conductive adhesive. In this embodiment of the application, no specific limitation is made on the adhesive medium between the first surface and the liquid cooling plate 10.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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.

[0084] 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 thermal management component having a first direction (x), a second direction (y), and a third direction (z) that intersect each other in pairs, characterized in that, The thermal management component includes: Multiple liquid cooling plates (10) are spaced apart along the first direction (x), and a gap for accommodating a battery cell (20) is formed between two adjacent liquid cooling plates (10). The liquid cooling plates (10) are provided with protrusions (105) facing the gaps. A cooling channel (100) is provided in the protrusions (105). The cooling channel (100) is provided with an inlet (1001) and an outlet (1002). The cooling channel (100) includes multiple sub-channels (1000) extending along the second direction (y) and multiple connecting channels (1003) extending along the third direction (z). The multiple connecting channels (1003) are spaced apart along the second direction (y), and the multiple sub-channels (1000) are spaced apart along the third direction (z). The sub-channels (1000) are connected through the connecting channels (1003).

2. The thermal management component according to claim 1, characterized in that, The liquid cooling plate (10) includes a first liquid cooling plate (101) and a second liquid cooling plate (102) disposed opposite to each other along a first direction (x); wherein the protrusion is disposed on at least one of the first liquid cooling plate (101) and the second liquid cooling plate (102).

3. The thermal management component according to claim 2, characterized in that, The first liquid cooling plate (101) is provided with a first protrusion (1010) that protrudes in a direction away from the second liquid cooling plate (102); The second liquid cooling plate (102) is provided with a second protrusion (1020) that protrudes in a direction away from the first liquid cooling plate (101), and the second protrusion (1020) and the first protrusion (1010) enclose to form the cooling channel (100).

4. The thermal management component according to claim 2, characterized in that, The first liquid cooling plate (101) and the second liquid cooling plate (102) are welded together.

5. The thermal management component according to claim 3, characterized in that, The first liquid cooling plate (101) and the second liquid cooling plate (102) have solder marks on their circumferential edges; and / or, the protrusions are multiple, the multiple protrusions are spaced apart along a third direction (z) and define multiple planar portions, the planar portions are provided with solder marks, and the third direction (z) intersects with the first direction (x).

6. The thermal management component according to claim 1, characterized in that, The thermal management component also includes: Liquid inlet pipe (11) is connected to liquid inlet port (1001) on the plurality of liquid cooling plates (10) to introduce cooling medium into the cooling channel (100) through the liquid inlet port (1001); And a liquid outlet pipe (12), which is connected to the liquid outlet (1002) on the plurality of liquid cooling plates (10) so as to introduce the cooling medium in the cooling channel (100) into the liquid outlet pipe (12) through the liquid outlet (1002).

7. The thermal management component according to claim 6, characterized in that, Along the second direction (y), the liquid cooling plate (10) includes a first end (103) and a second end (104) disposed opposite to each other, the second direction (y) intersecting the first direction (x); wherein, The liquid inlet pipe (11) is connected to the first end (103) of the liquid cooling plate (10), and the liquid outlet pipe (12) is connected to the second end (104) of the liquid inlet pipe (11); Alternatively, both the inlet pipe (11) and the outlet pipe (12) are connected to the first end (103) of the liquid cooling plate (10).

8. The thermal management component according to claim 1, characterized in that, The sub-channel (1000) is provided with at least two connecting channels (1003) at one end along the second direction (y), and the liquid in the at least two connecting channels (1003) flows in opposite directions.

9. A battery pack, characterized in that, The battery pack includes: a plurality of battery cells (20) and a thermal management component according to any one of claims 1 to 8; wherein at least one of the battery cells (20) is disposed within the gap.

10. The battery pack according to claim 9, characterized in that, The battery cell (20) has a first surface with the largest area, and the first surface is bonded to the liquid cooling plate (10).

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