Battery pack

Abstract

The embodiment of the utility model provides a battery pack, the battery pack comprises a box body, a plurality of battery monomers and a heat management component, the plurality of battery monomers and the heat management component are arranged in the box body, the heat management component comprises a body and a water nozzle, a medium flow channel is arranged in the body, the water nozzle is communicated with the medium flow channel for liquid inlet or liquid outlet, and the heat management component is arranged in the box body. The water nozzle and the body are integrally formed, and the body is in heat-conducting connection with the battery monomers. In the embodiment of the invention, the water nozzle and the body of the heat management component are of the integrally-formed structure, and compared with a common welding type water nozzle in the prior art, a redundant welding structure between the water nozzle and the body is omitted, welding connectors are reduced, and the integrity and the sealing performance of the heat management component structure are improved; therefore, the safety performance of the heat management component and the cooling effect on the battery pack are ensured.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a battery pack. Background Art

[0002] In order to solve the problem of thermal spread between adjacent battery cells in a battery pack, a cold plate is usually provided in the battery pack to reduce the temperature of the battery cells. Among them, the cold plate has a flow channel for the circulation of a cooling medium, and nozzles are welded on the liquid inlet and outlet of the cold plate. The nozzles welded on the liquid inlet and outlet are respectively used to connect the liquid inlet pipe and the liquid outlet pipe to realize the circulation of the cooling medium outside and inside the cold plate together with the medium flow channel. However, the existing cold plate structure has low strength and poor sealing performance, which affects the cooling effect of the battery cells and may even cause damage to the battery cells in severe cases. Summary of the Utility Model

[0003] This application aims to provide a battery pack to solve the problems of low strength and poor sealing performance of the existing cold plate structure.

[0004] To solve the above technical problems, this application is implemented as follows:

[0005] This application discloses a battery pack having a first direction, a second direction, and a third direction that intersect pairwise. The battery pack includes a box body, a plurality of battery cells, and a thermal management component. The plurality of battery cells and the thermal management component are arranged in the box body. Among them,

[0006] The thermal management component includes: a body and a nozzle. A medium flow channel is arranged inside the body. The nozzle is communicated with the medium flow channel for liquid inlet or outlet. The nozzle and the body are of an integrally formed structure. The body is thermally connected to the battery cell.

[0007] Optionally, the nozzle includes a first end and a second end arranged away from each other. The first end is connected to the body, and the second end is far from the body and used to connect a water pipe. Among them, the wall thickness of the second end is less than that of the first end.

[0008] Optionally, the body includes two relatively arranged flow channel plates. At least one of the flow channel plates is provided with a flow channel groove. The two flow channel plates are fixedly connected so that the flow channel groove encloses to form the medium flow channel. The nozzle is arranged on at least one of the flow channel plates.

[0009] Optionally, the two flow channel plates are fixedly connected by welding.

[0010] Optionally, nozzles are integrally formed on the two flow channel plates respectively, and the nozzles on the two flow channel plates are arranged opposite to each other along the second direction and communicated with each other.

[0011] Optionally, a receiving cavity is provided in the box body, and a plurality of the battery monomers are arranged in the receiving cavity in an array along the first direction and the second direction;

[0012] The battery monomer has a connection surface, which is the surface with the largest surface area of the battery monomer. The thermal management component is disposed between the battery monomers spaced along the second direction, and the body is connected to the connection surface.

[0013] Optionally, the flow channel plate includes a heat exchange part and a current collecting part integrally connected. The medium flow channel extends on the heat exchange part, the water nozzle is disposed on the current collecting part, and the heat exchange part is in thermal connection with the battery monomer.

[0014] Optionally, a connection groove is formed in the current collecting part, and the connection groove communicates the flow channel groove and the water nozzle.

[0015] Optionally, the heat exchange part includes a plurality of heat exchange surfaces connected along the first direction, and an included angle exists between the planes where two adjacent heat exchange surfaces are located. The heat exchange surface is in thermal connection with at least one of the battery monomers.

[0016] Optionally, the number of the thermal management components is multiple, and the multiple thermal management components are spaced along the second direction; the battery pack further includes a connecting pipe, and two ends of the connecting pipe are respectively inserted into the water nozzles of two adjacent thermal management components to communicate two adjacent thermal management components.

[0017] Optionally, the outer peripheral surface of the water nozzle is an arc surface.

[0018] In the embodiment of the present application, the battery pack includes a box body and a plurality of battery monomers and thermal management components disposed in the box body. Among them, the thermal management component includes an integrally formed body and a water nozzle. The body is provided with a medium flow channel, and the cooling medium can flow into or out of the medium flow channel from the water nozzle, so as to perform heat exchange with the battery monomer, reduce the temperature of the battery monomer, ensure the service performance of the battery pack, and extend the service life of the battery pack. Since the water nozzle of the thermal management component provided in the embodiment of the present application and the body are of an integrally formed structure, compared with the common welded water nozzle in the prior art, the redundant welding structure between the water nozzle and the body is cancelled, the welding interfaces are reduced, and the integrity and sealing performance of the structure of the thermal management component are improved, thereby ensuring the safety performance of the thermal management component and the cooling effect on the battery pack.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of the internal structure of the battery pack according to an embodiment of the present application;

[0022] Figure 2 is an exploded view of the battery pack according to an embodiment of the present application;

[0023] Figure 3 is a cross-sectional view of the thermal management component according to an embodiment of the present application;

[0024] Figure 4 is Figure 3 an enlarged schematic view of part A in;

[0025] Figure 5 is a schematic diagram of the structure of the thermal management component according to an embodiment of the present application;

[0026] Figure 6 is Figure 5 a cross-sectional view of the current collector in;

[0027] Figure 7 is Figure 6 an enlarged schematic view of part B in;

[0028] Figure 8 is a schematic diagram of the structure of the thermal management component according to another embodiment of the present application;

[0029] Figure 9 is a schematic diagram of the structure of the thermal management component according to still another embodiment of the present application;

[0030] Figure 10 is a schematic diagram of the structure of the battery cell according to an embodiment of the present application.

[0031] Reference numerals: 100 - thermal management component; 10 - body; 11 - medium flow channel; 12 - heat exchange part; 121 - heat exchange surface; 13 - current collecting part; 131 - connecting groove; 14 - flow channel plate; 141 - flow channel groove; 20 - water nozzle; 200 - battery cell; 201 - connecting surface; 300 - box body; 400 - connecting pipe; X - first direction; Y - second direction; Z - third direction. Detailed embodiments

[0032] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where 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 by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0033] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0035] In the description of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0036] In this application, the term "parallel" not only includes the case of absolute parallelism, but also includes the case of approximately parallelism commonly recognized in engineering. For example, "parallel" means that the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is in the range of -1° to 1°. At the same time, "perpendicular" not only includes the case of absolute perpendicularity, but also includes the case of approximately perpendicularity commonly recognized in engineering. For example, "perpendicular" means that the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is in the range of 89° to 91°. Equal distance or equal angle not only includes the case of absolute equality, but also includes the case of approximately equality commonly recognized in engineering, that is, a certain error can exist, such as a state where the tolerance range is -1% to 1%.

[0037] This application discloses a battery pack. A thermal management component thermally connected to battery cells is arranged in the battery pack. By introducing a cooling medium into the thermal management component, heat exchange and temperature reduction can be performed on the battery cells of the battery pack, ensuring the service performance of the battery pack and extending the service life of the battery pack. In the thermal management component provided by this application, the body and the water nozzle are integrally formed, thereby reducing welding interfaces, improving the structural sealing of the thermal management component, and ensuring the cooling effect of the thermal management component.

[0038] In the embodiment of this application, the battery pack has a first direction, a second direction, and a third direction that intersect pairwise. Referring to Figures 1 to 9 , the first direction is the direction indicated by arrow X in the figure, the second direction is the direction indicated by arrow Y in the figure, and the third direction is the direction indicated by arrow Z in the figure.

[0039] The following further describes this application in detail with reference to the accompanying drawings and specific embodiments.

[0040] Referring to Figure 1 , a schematic diagram of the internal structure of the battery pack according to the embodiment of this application is shown. Referring to Figure 2 , an exploded view of the battery pack according to the embodiment of this application is shown. As shown in Figure 1 and Figure 2 , the battery pack may specifically include: a box body 300, a plurality of battery cells 200, and a thermal management component 100. The plurality of battery cells 200 and the thermal management component 100 are arranged in the box body 300. Among them, the thermal management component 100 includes: a body 10 and a water nozzle 20. A medium flow channel 11 is arranged inside the body 10. The water nozzle 20 is communicated with the medium flow channel 11. In practical applications, the water nozzle 20 can be used for liquid inlet or liquid outlet. The water nozzle 20 and the body 10 are an integrally formed structure, and the body 10 is thermally connected to the battery cells 200.

[0041] Specifically, the housing 300 of the battery pack has a receiving cavity with an opening. The battery cells 200 and the thermal management component 100 are arranged in the receiving cavity of the housing 300 to form an integral body. The housing 300 may further include a lid which is connected to the opening of the receiving cavity of the housing 300 to seal the receiving cavity of the housing 300, thereby realizing the sealing of the battery pack. The thermal management component 100 includes an integrally formed body 10 and nozzles 20. The number of nozzles 20 may be multiple. Among the multiple nozzles 20, there are nozzles 20 for liquid inlet and nozzles 20 for liquid outlet. This application does not make specific limitations in this regard. In addition, this application does not make specific limitations on the positions of the nozzles 20 on the body 10 either.

[0042] Exemplarily, two nozzles 20 are arranged on the body 10. One of the nozzles 20 is for liquid inlet and the other is for liquid outlet. Further, the two nozzles 20 are respectively arranged at both ends of the body 10 along the first direction X, or the two nozzles 20 are arranged side by side at one end of the body 10 along the first direction X, or the two nozzles 20 may also be arranged at the middle position of the body 10. In actual applications, the number and positions of the nozzles 20 can be designed in combination with the size of the housing 300, the number and distribution of the battery cells 200.

[0043] In the embodiment of this application, the nozzle 20 includes a first end and a second end which are arranged back to back. The first end is connected to the body 10, and the second end is away from the body 10 and is used for connecting a water pipe. Among them, the wall thickness of the second end is smaller than that of the first end.

[0044] Specifically, the nozzle 20 and the body 10 are integrally formed, and the nozzle 20 forms a thin-walled structure similar to a cylinder. In this nozzle 20, the wall thickness of the second end is smaller than that of the first end. More specifically, the wall thickness of this thin-walled structure gradually decreases from the first end to the second end. In actual applications, the nozzle 20 and the body 10 can be integrally formed by processing techniques such as casting, stamping, and extrusion. The first end of the nozzle 20 is connected to the body 10, and the second end is away from the body 10. It can be understood that since the second end is formed by extending from the first end toward the side away from the body 10, the wall thickness of the second end of the nozzle 20 is smaller than that of the first end, which is convenient for the processing and forming of the nozzle 20.

[0045] In the embodiment of this application, the body 10 includes two relatively arranged flow channel plates 14. At least one flow channel plate 14 is provided with a flow channel groove 141. The two flow channel plates 14 are fixedly connected so that the flow channel groove 141 forms a medium flow channel 11. The nozzle 20 is arranged on at least one flow channel plate 14. Specifically, flow channel grooves 141 are provided on both flow channel plates 14, and the flow channel grooves 141 on the two flow channel plates 14 face each other and jointly form a medium flow channel 11.

[0046] Such as Figures 1 to 9As shown, the flow channels 141 on the flow channel plate 14 extend in a serpentine distribution, so that the width of the flow channels 141 can be reduced and the length of the flow channels 141 can be increased. Ribs are formed between adjacent flow channels 141. The two flow channel plates 14 are arranged opposite to each other in the second direction Y. When the two flow channel plates 14 are fixedly connected, the ribs on the two flow channel plates 14 are connected. At the same time, the flow channels 141 on the two flow channel plates 14 enclose to form a medium flow channel 11, so that the flow cross-section of the medium flow channel 11 can be increased as much as possible to improve the heat exchange effect.

[0047] It should be noted that the water nozzle 20 can be arranged on one flow channel plate 14 or on two flow channel plates 14. When the water nozzle 20 is arranged on one flow channel plate 14, the cooling medium can enter and exit from the same side of the heat management component 100. Similarly, when the water nozzle 20 is arranged on two flow channel plates 14, the cooling medium can enter the medium flow channel 11 from one side of the heat management component 100 and flow out of the medium flow channel 11 from the other side.

[0048] In the embodiment of the present application, the two flow channel plates 14 are fixedly connected by welding.

[0049] In practical applications, the flow channel plate 14 can be formed by stamping an aluminum brazing composite material and welded into one body by a brazing process. In this way, it is convenient to integrally form the water nozzle 20 on the flow channel plate 14 first, and then weld the two flow channel plates 14 to form the heat management component 100.

[0050] In the embodiment of the present application, water nozzles 20 are integrally formed on the two flow channel plates 14 respectively, and the water nozzles 20 on the two flow channel plates 14 are arranged opposite to each other in the second direction Y and communicate with each other.

[0051] Specifically, two water nozzles 20 are respectively arranged on the two flow channel plates 14. The two water nozzles 20 on the two flow channel plates 14 are respectively arranged opposite to each other in the second direction Y and communicate with each other to form a liquid inlet end and a liquid outlet end. Since the water nozzles 20 on the two flow channel plates 14 communicate with each other, at this time, the water nozzles 20 on the two flow channel plates 14 can both be used to connect water pipes. When multiple heat management components 100 are arranged at intervals in the second direction Y, the multiple heat management components 100 can be connected by water pipes and form a parallel relationship, so that the cooling medium can enter the medium flow channels 11 in the multiple heat management components 100 almost simultaneously, improving the cooling efficiency of the heat management component 100 for the battery cells 200.

[0052] Such as Figure 1 and Figure 2As shown in the figure, in the embodiment of the present application, a receiving cavity is provided in the box body 300, and a plurality of battery cells 200 are arranged in an array in the receiving cavity along the first direction X and the second direction Y; the battery cell 200 has a connection surface 201, and the connection surface 201 is the surface with the largest surface area of the battery cell 200. The thermal management component 100 is arranged between the battery cells 200 spaced along the second direction Y, and the body 10 is connected to the connection surface 201.

[0053] Referring to Figure 10 , a schematic structural diagram of the battery cell 200 in the embodiment of the present application is shown. As Figure 10 shown, the battery cell 200 is generally a cuboid structure and has 6 faces. Among them, the surface with the largest surface area is the connection surface 201. Each battery cell 200 includes two relatively arranged connection surfaces 201. The body 10 of the thermal management component 100 is thermally connected to the connection surface 201 of the battery cell 200. Since the connection surface 201 has the largest surface area, the surface that can be thermally connected to the thermal management component 100 is also the largest. Therefore, the heat dissipation and cooling effect is good. In addition, in order to ensure the thermal conduction effect between the battery cell 200 and the thermal management component 100, the connection surface 201 of the battery cell 200 and the body 10 of the thermal management component 100 can be connected together by bonding to enhance the connection strength between the two.

[0054] It should be noted that when a plurality of battery cells 200 are arranged in an array along the first direction X and the second direction Y, in order to ensure the cooling effect of each row of battery cells 200, a plurality of thermal management components 100 can be provided, and the battery cells 200 and the thermal management components 100 are alternately arranged along the second direction Y.

[0055] In practical applications, as Figure 3 shown, the thermal management component 100 can have a plurality of heat exchange surfaces 121, and the planes where the plurality of heat exchange surfaces 121 are located are arranged at an angle, so as to play a certain buffering role in the impact force of the outside on the battery pack. Also, since the thermal management component 100 is thermally connected to a plurality of battery cells 200, the plurality of battery cells 200 can also be not strictly arranged in an array along the first direction X and the second direction Y, and are arranged substantially parallel to the heat exchange surface 121 of the thermal management component 100.

[0056] In the embodiment of the present application, the flow channel plate 14 includes an integrally connected heat exchange part 12 and a current collecting part 13. The medium flow channel 11 extends on the heat exchange part 12, and the water nozzle 20 is arranged on the current collecting part 13. The heat exchange part 12 is thermally connected to the battery cell 200.

[0057] Specifically, a water nozzle 20 is provided in the current collecting part 13 for the inlet and outlet of the cooling medium. The heat exchange part 12 is provided with a medium flow channel 11 and is thermally connected to the battery cell 200. The cooling medium flows in the medium flow channel 11 to achieve the cooling effect on the battery cell 200. In practical applications, the number and positional relationship between the heat exchange part 12 and the current collecting part 13 can be designed according to the spatial conditions in the battery pack, the layout of the battery cells 200, etc., and the present application does not make specific limitations on this.

[0058] Referring to Figures 5 to 7 , a schematic structural diagram of the thermal management component 100 in an embodiment of the present application is shown. As Figures 5 to 7 shown, the thermal management component 100 includes one heat exchange part 12 and two current collecting parts 13. Among them, the two current collecting parts 13 are connected to both ends of the heat exchange part 12 along the first direction X. Water nozzles 20 are respectively provided on the two current collecting parts 13 for liquid inlet and outlet. The cooling medium enters the medium flow channel 11 through the water nozzle 20 on one current collecting part 13 and flows out through the water nozzle 20 on the other current collecting part 13.

[0059] Referring to Figure 8 , a schematic structural diagram of the thermal management component 100 in another embodiment of the present application is shown. As Figure 8 shown, the thermal management component 100 includes one heat exchange part 12 and one current collecting part 13. Among them, one heat exchange part 12 is connected to one current collecting part 13. Two water nozzles 20 for liquid inlet and outlet are spaced along the third direction Z on the current collecting part 13.

[0060] In practical applications, the structure of this thermal management component 100 reduces one current collector, thereby reducing the size of the thermal management component 100 along the first direction X, and thus the size of the battery pack box 300 can be reduced. The reduction of the overall structural size of the battery pack can facilitate the overall layout of the electrical equipment.

[0061] Referring to Figure 9 , a schematic structural diagram of the thermal management component 100 in still another embodiment of the present application is shown. As Figure 9 shown, the thermal management component 100 includes two heat exchange parts 12 and one current collecting part 13. Among them, the two heat exchange parts 12 are connected to both ends of the current collecting part 13 along the first direction X. Two water nozzles 20 for liquid inlet and outlet are spaced along the third direction Z on the current collecting part 13.

[0062] It can be understood that since the current collecting part 13 is arranged between the heat exchange parts 12, when the thermal management component 100 is subjected to a compression test, the heat exchange parts 12 arranged at both ends of the current collecting part 13 can provide a certain degree of protection for the current collecting part 13, preventing the current collecting part 13 from being damaged by external forces and ensuring the reliability of the thermal management component 100.

[0063] Referring toFigure 3 , showing a cross-sectional view of the thermal management component 100 described in the embodiments of the present application. Refer to Figure 4 , showing Figure 3 an enlarged schematic view of part A in Figure 3 and Figure 4 As shown, in the embodiments of the present application, the manifold portion 13 is provided with a connection groove 131, and the connection groove 131 communicates with the flow channel groove 141 and the nozzle 20.

[0064] Specifically, the width of the connection groove 131 is smaller than the diameter of the nozzle 20 and the width of the flow channel groove 141. In practical applications, this structural feature of the connection groove 131 can reduce the flow velocity of the cooling medium between the nozzle 20 and the flow channel groove 141, thereby enhancing the cooling effect of the cooling medium.

[0065] Optionally, the heat exchange portion 12 includes a plurality of heat exchange surfaces 121 connected along the first direction X. There is an included angle between the planes where two adjacent heat exchange surfaces 121 are located, and the heat exchange surface 121 is thermally connected to at least one battery cell 200. In practical applications, when the thermal management component 100 is subjected to an impact force along the first direction X, due to the included angle between the planes where adjacent heat exchange surfaces 121 are located, a certain buffering effect can be achieved, avoiding the continuous transmission of the impact force between the plurality of heat exchange surfaces 121 and causing deformation and damage of the thermal management component 100.

[0066] In the embodiments of the present application, the number of the thermal management components 100 is multiple, and the multiple thermal management components 100 are arranged at intervals along the second direction Y; the battery pack further includes a connecting pipe 400, and both ends of the connecting pipe 400 are respectively inserted into the nozzles 20 of two adjacent thermal management components 100 to communicate the two adjacent thermal management components 100.

[0067] Specifically, the multiple thermal management components 100 have the same structure, and both ends of the connecting pipe 400 are respectively inserted into the nozzles 20 of two adjacent thermal management components 100, thereby connecting the multiple thermal management components 100 arranged at intervals along the second direction Y in parallel. The cooling medium flows through the connecting pipe 400 and enters the medium flow channel 11 from the nozzle 20 and the connection groove 131. It can be understood that since the multiple thermal management components 100 are in a parallel relationship, the cooling medium can enter the medium flow channels 11 of the multiple thermal management components 100 almost simultaneously, thereby cooling the battery cells 200 arranged at intervals along the second direction Y at the same time and improving the cooling efficiency of the entire battery pack.

[0068] In the embodiments of the present application, the outer peripheral surface of the nozzle 20 is an arc surface. Specifically, the outer peripheral surface of the nozzle 20 is adapted to the connecting pipe 400 to achieve a tighter connection between the two. Among them, the outer peripheral surface of the nozzle 20 being an arc surface can be that the outer peripheral surface of the nozzle 20 has a smooth transition along the axial direction of the nozzle 20.

[0069] In summary, the battery pack provided by the embodiments of the present application has at least the following advantages:

[0070] In the embodiments of the present application, the battery pack includes a box body and a plurality of battery cells and a thermal management component disposed in the box body. Among them, the thermal management component includes an integrally formed body and a water nozzle. The body is provided with a medium flow channel, and the cooling medium can flow into or out of the medium flow channel from the water nozzle, so as to perform heat exchange with the battery cells, reduce the temperature of the battery cells, ensure the service performance of the battery pack, and extend the service life of the battery pack. Since the water nozzle of the thermal management component provided by the embodiments of the present application and the body are of an integrally formed structure, compared with the common welded water nozzles in the prior art, the redundant welding structure between the water nozzle and the body is eliminated, the welding interfaces are reduced, and the integrity and sealing performance of the structure of the thermal management component are improved, thereby ensuring the safety performance of the thermal management component and the cooling effect on the battery pack.

[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack having a first direction (X), a second direction (Y) and a third direction (Z) intersecting each other, characterized in that: The battery pack comprises a box (300), a plurality of battery cells (200) and a thermal management component (100), wherein the plurality of battery cells (200) and the thermal management component (100) are arranged in the box (300), wherein: The thermal management component (100) comprises: a body (10) and a water nozzle (20); a medium flow channel (11) is arranged inside the body (10); the water nozzle (20) is connected to the medium flow channel (11) for liquid inlet or outlet; the water nozzle (20) and the body (10) are an integrally formed structure; and the body (10) is thermally connected to the battery cell (200).

2. The battery pack according to claim 1, characterized in that: The faucet (20) comprises a first end and a second end which are arranged in a manner opposite to each other, wherein the first end is connected to the body (10), and the second end is away from the body (10) and is used to connect to a water pipe, wherein the wall thickness of the second end is smaller than the wall thickness of the first end.

3. The battery pack according to claim 1, characterized in that: The body (10) comprises two flow channel plates (14) arranged opposite to each other, at least one of the flow channel plates (14) is provided with a flow channel groove (141), the two flow channel plates (14) are fixedly connected so that the flow channel groove (141) forms the medium flow channel (11), and the water nozzle (20) is arranged on at least one of the flow channel plates (14).

4. The battery pack according to claim 3, characterized in that: The two flow channel plates (14) are fixed by welding.

5. The battery pack according to claim 3, characterized in that: The two flow channel plates (14) are respectively provided with the water nozzles (20) in one piece, and the water nozzles (20) on the two flow channel plates (14) are arranged opposite to each other along the second direction (Y) and are connected to each other.

6. The battery pack according to claim 5, characterized in that: The box body (300) is provided with a receiving cavity, and a plurality of battery cells (200) are arranged in an array in the receiving cavity along the first direction (X) and the second direction (Y); The battery cell (200) has a connection surface (201), the connection surface (201) being the surface with the largest surface area of ​​the battery cell (200), the thermal management component (100) being arranged between the battery cells (200) spaced apart along the second direction (Y), and the body (10) being connected to the connection surface (201).

7. The battery pack according to claim 3, characterized in that: The flow channel plate (14) comprises a heat exchange portion (12) and a collector portion (13) which are integrally connected, the medium flow channel (11) extends on the heat exchange portion (12), the water nozzle (20) is arranged on the collector portion (13), and the heat exchange portion (12) is thermally connected to the battery cell (200).

8. The battery pack according to claim 7, characterized in that: The collecting portion (13) is provided with a connecting groove (131), and the connecting groove (131) is connected with the flow channel groove (141) and the water nozzle (20).

9. The battery pack according to claim 7, characterized in that: The heat exchange portion (12) comprises a plurality of heat exchange surfaces (121) connected along the first direction (X), the planes where two adjacent heat exchange surfaces (121) are located have an angle, and the heat exchange surface (121) is heat-conductively connected to at least one of the battery cells (200).

10. The battery pack according to claim 1, characterized in that: The outer peripheral surface of the water nozzle (20) is an arc surface.

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