A battery pack

Abstract

The utility model relates to battery technical field discloses a kind of battery pack, it includes battery and liquid cooling component along the first direction arrangement;Battery has pole column;Liquid cooling component is heat-conducting connected with pole column;Wherein, liquid cooling component has first liquid cooling cavity, second liquid cooling cavity and communicating flow channel, communicating flow channel is curve shape, along the extension direction of communicating flow channel, one end of communicating flow channel communicates first liquid cooling cavity, other end communicates second liquid cooling cavity;Cooling medium flows in first liquid cooling cavity, communicating flow channel and second liquid cooling cavity, and liquid cooling component is heat-conducting connected with pole column, thus, cooling medium can dissipate the heat on pole column in the process of flowing, to guarantee the use safety of battery;In addition, since communicating flow channel is curve shape, therefore, the resistance that cooling medium suffers when passing through communicating flow channel is relatively small, and cooling medium can smoothly pass through communicating flow channel, and the conveying efficiency of cooling medium is relatively higher.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack. Background Technology

[0002] In a battery pack, the heat generated by the battery during operation can easily accumulate at the terminals, which can cause thermal runaway due to localized overheating. Therefore, it is necessary to dissipate the heat from the terminals in a timely manner to ensure the safety of the battery. Utility Model Content

[0003] The primary objective of this invention is to provide a battery pack that can dissipate heat from the battery terminals in a timely manner.

[0004] To achieve the above objectives, the present invention provides a battery pack having a first orientation, the battery pack including a battery and a liquid cooling component disposed along the first orientation;

[0005] The battery includes terminals;

[0006] The liquid cooling component is thermally connected to the electrode post;

[0007] The liquid cooling component has a first liquid cooling cavity, a second liquid cooling cavity, and a connecting channel; with the first direction as the projection direction, the channel wall of the connecting channel has a curved shape in the orthographic projection on a plane perpendicular to the first direction; along the extension direction of the connecting channel, one end of the connecting channel is connected to the first liquid cooling cavity and the other end is connected to the second liquid cooling cavity.

[0008] Preferably, the battery pack further includes a second direction perpendicular to the first direction, and the terminal post includes a first terminal post and a second terminal post, both of which are located at the end of the battery closer to the liquid cooling component in the first direction;

[0009] The liquid cooling component includes a first liquid cooling element, a second liquid cooling element, and a connecting element. The first liquid cooling element and the second liquid cooling element are connected at the same end in the second direction through the connecting element. The first liquid cooling element is connected to the first electrode post, and the second liquid cooling element is connected to the second electrode post.

[0010] The first liquid cooling component has a first liquid cooling cavity, the second liquid cooling component has a second liquid cooling cavity, and the connecting component has the connecting flow channel.

[0011] Preferably, the connecting member includes a main body segment, a first connecting segment, and a second connecting segment. The first connecting segment is connected to the first liquid cooling component, and the second connecting segment is connected to the second liquid cooling component. The main body segment connects the first connecting segment and the second connecting segment, and the connecting channel passes through the main body segment, the first connecting segment, and the second connecting segment.

[0012] In this configuration, at least one of the main segment, the first connected segment, and the second connected segment is configured as a deformable structure.

[0013] Preferably, the first liquid cooling component and the second liquid cooling component are plate-shaped, and the thickness direction of the first liquid cooling component and the second liquid cooling component is the same as the first direction;

[0014] The first connecting segment and the second connecting segment are plate-shaped, and the cross-section of the first connecting segment and the second connecting segment perpendicular to the first direction is trapezoidal.

[0015] Preferably, the connecting channel has a first channel section, a second channel section, and a third channel section, wherein the first channel section is located within the first connecting section, the second channel section is located within the main body section, and the third channel section is located within the second channel section;

[0016] In the second direction, the cross-sectional shape of the first liquid cooling cavity and the second liquid cooling cavity is rectangular; the cross-section of the second flow channel section is circular, the cross-section of the first flow channel section is rectangular, and the first flow channel section connects the first liquid cooling cavity and the second flow channel section; the cross-section of the third flow channel section is rectangular, and the third flow channel section connects the second liquid cooling cavity and the second flow channel section.

[0017] Preferably, the main body section is a corrugated pipe.

[0018] Preferably, the first liquid cooling component, the second liquid cooling component, and the connecting component are an integral structure.

[0019] Preferably, the battery pack further includes a liquid inlet and a liquid outlet. In the second direction, the end of the first liquid cooling component away from the connecting member is connected to the liquid inlet, and the liquid inlet is used to input the cooling medium into the first liquid cooling cavity. The end of the second liquid cooling component away from the connecting member is connected to the liquid outlet, and the liquid outlet is used to output the cooling medium from the second liquid cooling cavity.

[0020] Preferably, there are multiple batteries, which are arranged along the second direction. In the second direction, the battery closest to the connecting member is the first battery.

[0021] In the first direction, the connecting member is at least partially opposite the first battery.

[0022] Preferably, the battery pack further includes a second direction perpendicular to the first direction, and the number of batteries is multiple, with the multiple batteries arranged along the second direction;

[0023] The battery pack also includes a busbar, through which the terminals of two adjacent batteries are connected;

[0024] Along the first direction, the busbar is disposed between the battery and the liquid cooling component, and the liquid cooling component is thermally connected to the busbar.

[0025] Preferably, the battery pack further includes a thermally conductive filling layer;

[0026] The liquid cooling component is connected to the manifold by the thermally conductive filling layer.

[0027] Preferably, the liquid cooling component is made of a thermosetting material.

[0028] The battery pack of this utility model embodiment has the following advantages compared with the prior art:

[0029] In practical applications, the cooling medium of the battery pack of this utility model flows in the first liquid cooling cavity, the connecting channel and the second liquid cooling cavity. The liquid cooling components are thermally connected to the terminals. Thus, the cooling medium can dissipate the heat on the terminals during the flow process, thereby ensuring the safety of the battery.

[0030] In addition, since the orthographic projection shape of the channel wall of the connecting channel is curved, the resistance encountered by the cooling medium when passing through the connecting channel is relatively small, and the cooling medium can pass through the connecting channel smoothly, resulting in relatively high cooling medium delivery efficiency. Attached Figure Description

[0031] Figure 1 This is a perspective view of the battery pack according to an embodiment of the present invention;

[0032] Figure 2 This is an exploded view of the battery pack according to an embodiment of the present invention;

[0033] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of A in the middle;

[0034] Figure 4 This is an exploded view of the battery, liquid cooling component, and busbar assembly according to an embodiment of this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the battery, the first liquid cooling component, the busbar, and the thermally conductive filling layer in an embodiment of this utility model.

[0036] Figure 6 This is a structural diagram of the liquid cooling component according to an embodiment of the present invention;

[0037] Figure 7 This is an embodiment of the present utility model. Figure 6 Enlarged diagram of B in the diagram.

[0038] In the diagram, Z represents the first direction; X represents the second direction; 100 represents the housing; 1 represents the battery; 1A represents the first battery; 10 represents the terminal; 11 represents the first terminal; 12 represents the second terminal; 2 represents the liquid cooling component; 21 represents the first liquid cooling component; 210 represents the first liquid cooling cavity; 22 represents the second liquid cooling component; 220 represents the second liquid cooling cavity; 23 represents the connecting component; 230 represents the connecting flow channel; 2301 represents the first flow channel section; 2302 represents the second flow channel section; 2303 represents the third flow channel section; 231 represents the main body section; 232 represents the first connecting section; 233 represents the second connecting section; 3 represents the liquid inlet component; 4 represents the liquid outlet component; 5 represents the manifold; and 6 represents the thermally conductive filling layer. Detailed Implementation

[0039] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0040] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description of this application, it should be noted that, unless otherwise expressly 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the embodiments of the application, "parallel" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is -1° to 1°. "Perpendicular" refers to a state in which the angle formed by two lines, a line and a surface, or a surface is 89° to 91°. Equal distances, equal angles, or equal areas refer to a state in which the tolerance range is -1% to 1%.

[0044] like Figures 1 to 7 As shown, a preferred embodiment of the present invention provides a battery pack having a first direction Z and a second direction X that are perpendicular to each other. The battery pack includes a battery 1 and a liquid cooling component 2 arranged along the first direction Z. The battery pack also has a housing 100 for covering the battery 1 and the liquid cooling component 2.

[0045] The battery 1 includes a terminal post 10; the liquid cooling component 2 is thermally connected to the terminal post 10, and the heat accumulated in the battery 1 at the terminal post 10 can be conducted to the liquid cooling component 2.

[0046] The liquid cooling component 2 includes a first liquid cooling cavity 210, a second liquid cooling cavity 220, and a connecting channel 230. With the first direction Z as the projection direction, the channel wall of the connecting channel 230 has a curved shape in its orthographic projection onto a plane perpendicular to the first direction Z. (Refer to...) Figure 7 The projected shape of the connecting channel 230 is arc-shaped. Along the extension direction of the connecting channel 230, one end of the connecting channel 230 connects to the first liquid cooling cavity 210 and the other end connects to the second liquid cooling cavity 220. The arc shape can also be a non-linear shape such as a wavy line or a sawtooth line.

[0047] The liquid cooling component 2 is connected to the cooling circulation device, which continuously provides cooling medium to the liquid cooling component 2. The cooling medium flows sequentially through the first liquid cooling chamber 210, the connecting flow channel 230, and the second liquid cooling chamber 220, thereby carrying away the heat from the liquid cooling component 2. Since the liquid cooling component 2 is thermally connected to the electrode 10, the heat from the electrode 10 can be transferred to the liquid cooling component 2. Thus, the cooling medium can carry away the heat from the electrode 10 during its flow, thereby ensuring the safety of the battery 1. It is understood that the cooling circulation device has a circulation pump, which provides the power for the flow of the cooling medium, allowing the cooling medium to flow through the liquid cooling component 2. The cooling circulation device can be connected to the first liquid cooling chamber 210 and the second liquid cooling chamber 220 of the liquid cooling component 2 through a pipe, so that the liquid cooling component 2 becomes part of the cooling medium circulation pipeline of the cooling circulation device.

[0048] In addition, since the projected shape of the connecting channel 230 is arc-shaped, the resistance encountered by the cooling medium when passing through the connecting channel 230 is relatively small, and the cooling medium can pass through the connecting channel 230 smoothly, resulting in relatively high cooling medium delivery efficiency.

[0049] The liquid cooling component 2 is made of thermosetting materials, such as polyvinyl chloride, polypropylene, or rubber, to make it easy to mold.

[0050] In some embodiments of this utility model, reference is made to Figures 2 to 5 The terminal 10 includes a first terminal 1110 and a second terminal 1210, both of which are located at the end of the battery 1 in the first direction Z near the liquid cooling component 2. The liquid cooling component 2 includes a first liquid cooling element 21, a second liquid cooling element 22, and a connecting element 23. The same end of the first liquid cooling element 21 and the second liquid cooling element 22 in the second direction X is connected by the connecting element 23. The first liquid cooling element 21 is connected to the first terminal 1110, and the second liquid cooling element 22 is connected to the second terminal 1210. The first liquid cooling element 21 has a first liquid cooling cavity 210, the second liquid cooling element 22 has a second liquid cooling cavity 220, and the connecting element 23 has a connecting flow channel 230. That is, the first terminal 1110 of battery 1 is connected to the first liquid cooling component 21, and the second terminal 1210 of battery 1 is connected to the second liquid cooling component 22, so that both terminals 10 of battery 1 can conduct heat to the liquid cooling component 2, ensuring that the heat of battery 1 can be conducted to the liquid cooling component 2 in a timely manner, so as to ensure that the temperature of battery 1 does not get too high.

[0051] In some embodiments of this utility model, reference is made to Figure 6 and Figure 7The connecting member 23 includes a main body segment 231, a first connecting segment 232, and a second connecting segment 233. The first connecting segment 232 is connected to the first liquid cooling component 21, and the second connecting segment 233 is connected to the second liquid cooling component 22. The main body segment 231 connects the first connecting segment 232 and the second connecting segment 233. The connecting channel 230 passes through the main body segment 231, the first connecting segment 232, and the second connecting segment 233. At least one of the main body segment 231, the first connecting segment 232, and the second connecting segment 233 is configured as a deformable structure. The connecting member 23 is deformable so that the connecting channel 230 is arc-shaped, resulting in less resistance to the cooling medium as it passes through the connecting channel 230, allowing the cooling medium to flow smoothly and achieving relatively high delivery efficiency. Furthermore, the first liquid cooling component 21 and the second liquid cooling component 22 are connected by the first connecting section 232 and the second connecting section 233 respectively, so as to ensure that the first liquid cooling component 21 and the second liquid cooling component 22 are connected, so that the cooling medium can flow along the first liquid cooling cavity 210, the connecting flow channel 230 and the second liquid cooling cavity 220, and ensure that the cooling medium can carry the heat on the liquid cooling component 2.

[0052] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 The first liquid cooling component 21 and the second liquid cooling component 22 are plate-shaped, meaning they are flat. The thickness direction of the first liquid cooling component 21 and the second liquid cooling component 22 is the same as the first direction Z. The first connecting segment 232 and the second connecting segment 233 are also plate-shaped, and their cross-sections perpendicular to the first direction Z are trapezoidal. The plate-shaped design of the first liquid cooling component 21 and the second liquid cooling component 22 allows them to better fit the terminal post 10 of the battery 1, thereby increasing the contact area between the terminal post 10 of the battery 1 and the liquid cooling component 2, increasing thermal conductivity, and dissipating the heat of the battery 1 to the outside.

[0053] In some embodiments of this utility model, reference is made to Figure 6 and Figure 7The connecting channel 230 has a first channel segment 2301, a second channel segment 2302, and a third channel segment 2303. The first channel segment 2301 is disposed within the first connecting segment 232, the second channel segment 2302 is disposed within the main body segment 231, and the third channel segment 2303 is disposed within the second channel segment 2302. In the second direction X, the cross-sectional shape of the first liquid cooling cavity 210 and the second liquid cooling cavity 220 is rectangular; the cross-sectional shape of the second channel segment 2302 is circular, and the cross-sectional shape of the first channel segment 2301 is rectangular, and the first channel segment 2301 is connected... The first liquid cooling cavity 210 and the second flow channel section 2302, and the third flow channel section 2303 have rectangular cross-sections and connect the second liquid cooling cavity 220 and the second flow channel section 2302. The first flow channel section 2301 smoothly transitions to the first liquid cooling cavity 210 and the second flow channel section 2302, and the third flow channel section 2303 smoothly transitions to the second liquid cooling cavity 220 and the second flow channel section 2302, without any obstructing burrs or steps. This reduces flow resistance within the liquid cooling component 2, allowing the cooling medium to flow more effectively and cool the battery 1. Furthermore, the cross-sectional shapes of the first liquid cooling cavity 210 and the second liquid cooling cavity 220 can also be triangular or other regular shapes, as can the cross-sections of the second flow channel section 2302, the third flow channel section 2303, and the first flow channel section 2301.

[0054] In some embodiments of this utility model, reference is made to Figure 6 and Figure 7 The main body section 231 is a corrugated pipe so that the connecting member 23 can connect the first liquid cooling member 21 and the second liquid cooling member 22.

[0055] In some embodiments of this utility model, the first liquid cooling component 21, the second liquid cooling component 22 and the connecting component 23 are an integral structure, which makes it easier to manufacture the connecting component 23 and reduces production costs.

[0056] In some embodiments of this utility model, reference is made to Figure 6 The battery pack further includes a liquid inlet 3 and a liquid outlet 4. In the second direction X, the end of the first liquid cooling component 21 away from the connecting member 23 is connected to the liquid inlet 3. The liquid inlet 3 is used to supply cooling medium into the first liquid cooling chamber 210. The end of the second liquid cooling component 22 away from the connecting member 23 is connected to the liquid outlet 4. The liquid outlet 4 is used to supply cooling medium out from the second liquid cooling chamber 220. That is, the liquid cooling component 2 is connected to the cooling circulation device through the liquid outlet 4 and the liquid inlet 3 so that the cooling medium flows through the liquid cooling component 2.

[0057] In some embodiments of this utility model, reference is made to Figures 2 to 4 The number of batteries 1 is multiple, and the multiple batteries 1 are arranged along the second direction X. In the second direction X, the battery 1 closest to the connecting member 23 is the first battery 1A1. In the first direction Z, the connecting member 23 is at least partially opposite the first battery 1A1. This ensures that the liquid cooling component 2 is not too large, avoids the need to set up an additional cavity to accommodate the connecting member 23, and reduces the space occupied by the liquid cooling component 2.

[0058] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 The battery pack includes multiple batteries 1 arranged along the second direction X. The battery pack also includes a busbar 5, through which the terminals 10 of two adjacent batteries 1 are connected. Along the first direction Z, the busbar 5 is located between the battery 1 and the liquid cooling component 2. The liquid cooling component 2 is thermally connected to the busbar 5, meaning that the liquid cooling component 2 can also remove heat from the busbar 5 to better reduce the heat of the battery 1 during operation and prevent thermal runaway of the battery 1 due to excessive local temperature.

[0059] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 The battery pack also includes a thermally conductive filling layer 6; the thermally conductive filling layer 6 is connected between the liquid cooling component 2 and the busbar 5. The thermally conductive filling layer 6 can be a thermally conductive structural adhesive, thermally conductive adhesive, thermally conductive pad, etc. By setting the thermally conductive filling layer 6, the thermally conductive filling layer 6 can fill the tiny gaps between the liquid cooling component 2 and the busbar 5, increase the contact area for heat conduction, improve thermal resistance, and thus improve heat dissipation efficiency.

[0060] In summary, the liquid cooling component 2 of the battery pack of this utility model is connected to the cooling circulation device, which continuously provides cooling medium to the liquid cooling component 2, so that the cooling medium flows sequentially in the first liquid cooling cavity 210, the connecting flow channel 230 and the second liquid cooling cavity 220, thereby allowing the cooling medium flowing through the liquid cooling component 2 to carry away the heat of the liquid cooling component 2; and since the liquid cooling component 2 is thermally connected to the terminal 10, the heat of the terminal 10 can be transferred to the liquid cooling component 2. Thus, the cooling medium can carry away the heat on the terminal 10 during the flow, thereby ensuring the safety of the battery 1 in use.

[0061] In addition, since the connecting channel 230 is arc-shaped, the resistance encountered by the cooling medium when passing through the connecting channel 230 is relatively small, and the cooling medium can pass through the connecting channel 230 smoothly, resulting in relatively high cooling medium delivery efficiency.

[0062] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery pack having a first direction (Z), characterized in that, The battery pack includes a battery (1) arranged along the first direction (Z) and a liquid cooling component (2). The battery (1) includes terminals (10); The liquid cooling component (2) is thermally connected to the electrode (10); The liquid cooling component (2) has a first liquid cooling cavity (210), a second liquid cooling cavity (220), and a connecting channel (230). With the first direction (Z) as the projection direction, the channel wall of the connecting channel (230) is curved in the orthographic projection on the plane perpendicular to the first direction (Z). Along the extension direction of the connecting channel (230), one end of the connecting channel (230) is connected to the first liquid cooling cavity (210), and the other end is connected to the second liquid cooling cavity (220).

2. The battery pack according to claim 1, characterized in that, The battery pack also includes a second direction (X) perpendicular to the first direction (Z), and the terminal (10) includes a first terminal (11) and a second terminal (12), both of which are located at the end of the battery (1) in the first direction (Z) near the liquid cooling component (2). The liquid cooling component (2) includes a first liquid cooling component (21), a second liquid cooling component (22), and a connecting component (23). The first liquid cooling component (21) and the second liquid cooling component (22) are connected at the same end in the second direction (X) through the connecting component (23). The first liquid cooling component (21) is connected to the first pole post (11), and the second liquid cooling component (22) is connected to the second pole post (12). The first liquid cooling component (21) has a first liquid cooling cavity (210), the second liquid cooling component (22) has a second liquid cooling cavity (220), and the connecting component (23) has the connecting flow channel (230).

3. The battery pack according to claim 2, characterized in that, The connecting component (23) includes a main body section (231), a first connecting section (232), and a second connecting section (233). The first connecting section (232) is connected to the first liquid cooling component (21), and the second connecting section (233) is connected to the second liquid cooling component (22). The main body section (231) connects the first connecting section (232) and the second connecting section (233). The connecting channel (230) passes through the main body section (231), the first connecting section (232), and the second connecting section (233). At least one of the main body segment (231), the first connecting segment (232), and the second connecting segment (233) is configured as a deformable structure.

4. The battery pack according to claim 3, characterized in that, The first liquid cooling component (21) and the second liquid cooling component (22) are plate-shaped, and the thickness direction of the first liquid cooling component (21) and the second liquid cooling component (22) is the same as the first direction (Z); The first connecting segment (232) and the second connecting segment (233) are plate-shaped, and the cross sections of the first connecting segment (232) and the second connecting segment (233) perpendicular to the first direction (Z) are trapezoidal.

5. The battery pack according to claim 4, characterized in that, The connecting channel (230) has a first channel section (2301), a second channel section (2302) and a third channel section (2303). The first channel section (2301) is located within the first connecting section (232), the second channel section (2302) is located within the main body section (231), and the third channel section (2303) is located within the second channel section (2302). In the second direction (X), the cross-sectional shape of the first liquid cooling cavity (210) and the second liquid cooling cavity (220) is rectangular; the cross-section of the second flow channel section (2302) is circular, the cross-section of the first flow channel section (2301) is rectangular, and the first flow channel section (2301) connects the first liquid cooling cavity (210) and the second flow channel section (2302); the cross-section of the third flow channel section (2303) is rectangular, and the third flow channel section (2303) connects the second liquid cooling cavity (220) and the second flow channel section (2302).

6. The battery pack according to claim 3, characterized in that, The main body section (231) is a corrugated pipe.

7. The battery pack according to any one of claims 2-6, characterized in that, The first liquid cooling component (21), the second liquid cooling component (22), and the connecting component (23) are an integral structure.

8. The battery pack according to claim 2, characterized in that, The battery pack also includes a liquid inlet (3) and a liquid outlet (4). In the second direction (X), the end of the first liquid cooling component (21) away from the connecting component (23) is connected to the liquid inlet (3). The liquid inlet (3) is used to supply cooling medium to the first liquid cooling chamber (210). The end of the second liquid cooling component (22) away from the connecting component (23) is connected to the liquid outlet (4). The liquid outlet (4) is used to supply cooling medium to be output from the second liquid cooling chamber (220).

9. The battery pack according to claim 2, characterized in that, The number of batteries (1) is multiple, and the multiple batteries (1) are arranged along the second direction (X). In the second direction (X), the battery (1) closest to the connecting member (23) among the multiple batteries (1) is the first battery (1A). In the first direction (Z), the connecting member (23) is at least partially opposite the first battery (1A).

10. The battery pack according to claim 1, characterized in that, The battery pack also includes a second direction (X) perpendicular to the first direction (Z), and there are multiple batteries (1), which are arranged along the second direction (X). The battery pack also includes a busbar (5), through which the terminals (10) of two adjacent batteries (1) are connected; Along the first direction (Z), the busbar (5) is located between the battery (1) and the liquid cooling component (2), and the liquid cooling component (2) is thermally connected to the busbar (5).

11. The battery pack according to claim 10, characterized in that, The battery pack also includes a thermally conductive filling layer (6). The liquid cooling component (2) is connected to the manifold (5) by the thermally conductive filling layer (6).

12. The battery pack according to claim 1, characterized in that, The liquid cooling component (2) is made of thermosetting material.

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