Battery pack and vehicle thereof

Abstract

The application discloses a battery pack and a vehicle thereof, the battery pack comprising: a tray, the tray comprising a bottom plate and a plurality of edge beams arranged at the periphery of the bottom plate, the bottom plate and the plurality of edge beams being enclosed to form a containing groove; a cell assembly arranged in the containing groove, the cell assembly comprising a plurality of electrically connected cells, the cell assembly having a total electrode; a fixing support arranged between the edge beams and the cell assembly, the fixing support being provided with mounting grooves distributed and spaced apart from the edge beams and the cell assembly respectively; and a power lead-out element connected with the total electrode, the power lead-out element being arranged between the cell assembly and the edge beams and located in the mounting grooves, and the power lead-out element being in heat-conducting connection with the tray. According to the battery pack provided in the application, the power lead-out element can be effectively and timely cooled, and the mounting grooves can be used to improve the limiting effect on the power lead-out element, thereby facilitating the installation of the power lead-out element.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery pack and a vehicle thereof. Background Technology

[0002] In existing technologies, the main electrode of a battery pack usually needs to be led out by a power lead, and the power lead is directly arranged on the top of the cell. The power lead has no heat conduction or heat dissipation structure, which leads to an increase in the temperature of the power lead and an increase in its internal resistance. At the same time, the heat dissipated by the power lead is directly transferred to the cell, which affects the temperature of the cell and causes the temperature of the cell to rise, which has an adverse effect on the cell. Summary of the Invention

[0003] One objective of this application is to provide a new technical solution for a battery pack that can solve the technical problem of existing power lead-out components lacking heat conduction or heat dissipation structures.

[0004] Another object of this application is to provide a new technology solution for a vehicle that includes the battery pack.

[0005] According to a first aspect of this application, a battery pack is provided, comprising: a tray, the tray including a base plate and a plurality of side beams disposed around the base plate, the base plate and the plurality of side beams forming a receiving groove; a cell assembly disposed within the receiving groove, the cell assembly including a plurality of electrically connected cells, the cell assembly having a main electrode; a fixing bracket disposed between the side beams and the cell assembly, the fixing bracket having mounting grooves spaced apart from the side beams and the cell assembly; and a power lead-out member connected to the main electrode, the power lead-out member being disposed between the cell assembly and the side beams and located in the mounting groove, the power lead-out member being thermally connected to the tray.

[0006] According to an embodiment of this application, the fixing bracket has an opening that communicates with the mounting groove.

[0007] According to an embodiment of this application, the mounting groove includes: a first groove body communicating with the opening; a second groove body communicating with the first groove body and located on the side of the first groove body away from the opening; the power lead-out member includes: a first segment body located in the first groove body; and a second segment body connected to the first segment body and located in the second groove body.

[0008] According to an embodiment of this application, the second groove is disposed between the first groove and the side beam, and the contact area between the second section and the inner wall surface of the mounting groove near the side beam is greater than the contact area between the first section and the inner wall surface of the mounting groove near the cell assembly.

[0009] According to an embodiment of this application, the battery pack further includes: a liquid cooling plate, wherein the liquid cooling plate is provided with a flow channel; and a first thermal conductive element, wherein the first thermal conductive element is thermally connected to the first segment and the liquid cooling plate respectively.

[0010] According to an embodiment of this application, the power lead-out component is pre-embedded in the fixed bracket or detachably connected to the fixed bracket.

[0011] According to an embodiment of this application, the battery pack further includes a limiting member disposed on the fixed bracket to limit the position of the power lead-out member, and the limiting member is detachably connected to the power lead-out member.

[0012] According to an embodiment of this application, the limiting member is engaged or screwed to the power lead-out member.

[0013] According to an embodiment of this application, the fixed bracket defines a cavity, and the fixed bracket is provided with reinforcing ribs to divide the cavity into multiple cavities.

[0014] According to an embodiment of this application, the side beam and the fixed bracket are thermally connected.

[0015] According to an embodiment of this application, the battery pack further includes a second heat-conducting element, which is located between the side beam and the fixed bracket, and is connected to the side beam and the fixed bracket respectively.

[0016] According to an embodiment of this application, a plurality of battery cells are arranged along a first direction to form a battery cell array, the first direction being the thickness direction of the battery cells, the fixing bracket being located on one side of the battery cell array along the first direction, and the fixing bracket being connected to the side beam and the battery cell array respectively.

[0017] According to an embodiment of this application, the battery cell assembly includes a plurality of battery cell arrays, which are arranged and electrically connected along a second direction, wherein the second direction is the length direction of the battery cell; the battery pack includes a plurality of fixing brackets, which are located on one side of the battery cell assembly, and the fixing brackets are configured in a one-to-one correspondence with the battery cell arrays.

[0018] According to an embodiment of this application, the total electrode includes a total positive electrode and a total negative electrode, and the power lead is a copper busbar connected to the total negative electrode, or the power lead is an aluminum busbar connected to the total positive electrode.

[0019] According to an embodiment of this application, one end of the power lead-out member is provided with a first bend, and the other end of the power lead-out member is provided with a second bend. The first bend is connected to the main electrode, and the second bend is used to connect to the distribution box.

[0020] According to a second aspect of this application, a vehicle is provided, including the battery pack described in any of the above embodiments.

[0021] According to the battery pack of the present invention, by providing a fixing bracket between the cell assembly and the side beam, the mounting groove within the fixing bracket not only supports and mounts the power lead-out component, but also isolates the cell assembly from the power lead-out component by being spaced apart from the inner surface of the side beam and the cell assembly, further preventing heat transfer from the power lead-out component to the cell. Furthermore, by placing the power lead-out component within the mounting groove, it not only supports the power lead-out component but also positions it, facilitating its installation and reducing the overall structural dimensions after installation, thereby reducing the size of the battery pack.

[0022] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0024] Figure 1 This is a partial top view of a battery pack according to an embodiment of this application;

[0025] Figure 2 This is a partial exploded view of a battery pack according to an embodiment of this application;

[0026] Figure 3 This is an assembly diagram of the liquid cooling plate, power lead-out component, and fixing bracket according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of a power lead-out component embedded in a fixed bracket according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of an angle at which the power lead-out component according to an embodiment of this application is assembled with a fixed bracket by bolts;

[0029] Figure 6 This is a schematic diagram of another angle showing the power lead-out component assembled with a fixed bracket by bolts according to an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of an angle at which the power lead-out component according to an embodiment of this application is assembled with the fixing bracket via a snap fastener;

[0031] Figure 8 This is a schematic diagram of another angle showing the power lead-out component assembled with the fixed bracket via a snap fastener according to an embodiment of this application;

[0032] Figure 9 This is an assembly diagram of the power lead-out component, side beam, and fixed bracket according to an embodiment of this application.

[0033] Figure Labels

[0034] Battery pack 100;

[0035] 10. Pallet; 11. Receiving slot; 12. Base plate; 13. Side beam;

[0036] Cell array 21; Cell 22;

[0037] Fixed bracket 30; mounting groove 31; opening 32; first groove 33; second groove 34; reinforcing rib 35; cavity 36;

[0038] Power lead-out component 40; first bend 41; second bend 42; first segment 43; second segment 44;

[0039] Liquid cooling plate 50;

[0040] First heat-conducting component 60;

[0041] Limiting component 70;

[0042] Second heat-conducting component 80. Detailed Implementation

[0043] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0044] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0045] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0046] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0048] The battery pack 100 according to an embodiment of this application will now be described in detail with reference to the accompanying drawings.

[0049] like Figures 1 to 9 As shown, the battery pack 100 according to an embodiment of this application includes a tray 10, a cell assembly, a fixing bracket 30, and a power lead-out member 40.

[0050] Specifically, the tray 10 includes a base plate 12 and a plurality of side beams 13 disposed around the base plate 12. The base plate 12 and the plurality of side beams 13 enclose a receiving groove 11. The battery cell assembly is disposed in the receiving groove 11. The battery cell assembly includes a plurality of electrically connected battery cells 22. The battery cell assembly has a main electrode. A fixing bracket 30 is disposed between the side beams 13 and the battery cell assembly. The fixing bracket 30 has mounting grooves 31 that are spaced apart from the side beams 13 and the battery cell assembly. A power lead-out member 40 is connected to the main electrode. The power lead-out member 40 is disposed between the battery cell assembly and the side beams 13 and is located in the mounting groove 31. The power lead-out member 40 is thermally connected to the tray 10.

[0051] In other words, the battery pack 100 according to an embodiment of this application includes a tray 10 with a receiving groove 11, a cell assembly composed of multiple cells 22, and a power lead-out member 40 for leading out the total electrode of the cell assembly. The tray 10 includes a base plate 12 and multiple side beams 13, which are connected to form a ring structure. The base plate 12 and the multiple side beams 13 are connected to form the receiving groove 11, which can be used to place the cell assembly. The tray 10 can be made of metal or high-strength composite material, such as aluminum alloy or steel.

[0052] A fixing bracket 30 is also provided between the cell assembly and the side beam 13, and at least a portion of the power lead 40 is disposed within the mounting groove 31 of the fixing bracket 30. When the power lead 40 uses a conductive bus, the conductive bus can be led out from either the negative terminal or, depending on the design of the battery pack 100, from the positive terminal. The material of the conductive bus can be copper or aluminum, or any other material suitable for conductivity. Furthermore, the length of the power lead 40 can exceed the length of the fixing bracket 30; for example, both ends of the power lead 40 may extend beyond the fixing bracket 30. One end of the power lead 40 can be bent to one end of the cell assembly and electrically connected to the main electrode, and the other end of the power lead 40 can be bent to the other end of the cell assembly.

[0053] The power lead-out component 40 is thermally connected to the tray 10. This thermal connection can be understood as the power lead-out component 40 abutting against the tray 10, or the power lead-out component 40 being bonded to the tray 10, or a thermally conductive component being provided between the power lead-out component 40 and the tray 10, with the power lead-out component 40 connected to the tray 10 via the thermally conductive component. For example, the power lead-out component 40 can be thermally connected to the side beam 13, or thermally connected to the liquid cooling plate 50 via the tray 10, or directly thermally connected to the liquid cooling plate 50, which is part of the tray 10.

[0054] Therefore, by setting a fixed bracket 30 between the battery cell assembly and the side beam 13, the mounting groove 31 in the fixed bracket 30 can not only support and install the power lead 40, but also isolate the battery cell assembly from the power lead 40 by arranging the mounting groove 31 at intervals with the inner side of the side beam 13 and the battery cell assembly, thus further preventing the heat of the power lead 40 from being transferred to the battery cell 22.

[0055] Furthermore, by placing the power lead-out component 40 within the mounting groove 31, not only can the power lead-out component 40 be supported, but the mounting position of the power lead-out component 40 can also be positioned, facilitating the installation of the power lead-out component 40. In addition, the size of the overall structure after installation can be reduced, thereby reducing the size of the battery pack 100.

[0056] According to one embodiment of this application, the fixed bracket 30 has an opening 32 that communicates with the mounting groove 31, and the power lead-out member 40 can be installed into the mounting groove 31 through the opening 32.

[0057] In some specific embodiments of this application, such as Figure 3 As shown, the mounting groove 31 includes a first groove 33 and a second groove 34. The first groove 33 is connected to the opening 32, and the second groove 34 is connected to the first groove 33 and is located on the side of the first groove 33 away from the opening 32.

[0058] like Figure 3 and Figure 4 As shown, the power extraction component 40 includes a first segment 43 and a second segment 44. The first segment 43 is located in the first groove 33, and the second segment 44 is connected to the first segment 43 and located in the second groove 34. The power extraction component 40 can be installed into the mounting groove 31 through the opening 32. The shape of the power extraction component 40 can be adapted to the shape of the mounting groove 31 or smaller than the mounting groove 31.

[0059] For example, the mounting groove 31 is shaped like an inverted "L", with the first segment being a short limb and the second segment 44 being a long limb; or the mounting groove 31 is shaped like a straight line, and the power lead-out component 40 can be correspondingly shaped like a straight line; or the mounting groove 31 is shaped like an inverted "L", and the corresponding power lead-out component 40 is shaped like a straight line. It should be noted that the fitting relationship between the mounting groove 31 and the power lead-out component 40 is not limited to the three types listed above.

[0060] When the mounting groove is shaped like an inverted "L", along the thickness direction of the fixed bracket 30, that is, along the direction from the side beam 13 to the fixed bracket 30, the size of the first groove 33 is larger than the size of the second groove 34. This facilitates the installation of the power extraction component 40 and also allows for the installation of a power extraction component 40 with a similar shape, increasing the heat dissipation area of ​​the portion of the power extraction component 40 corresponding to the second groove 34. A stepped portion is provided inside the fixed bracket 30, and the outer surface of the stepped portion can mate with the inner wall surface of the fixed bracket 30 to form a mounting groove 31. The stepped portion provides support for the power extraction component 40.

[0061] When the fixed bracket 30 is made of a heat-conducting material, at least a portion of the heat from the power lead-out component 40 can be transferred to the side beam 13 through the second section 44 corresponding to the second groove 34; when the first section 43 is heat-conductingly connected to the base plate 12 or the liquid cooling plate 50, at least a portion of the heat can be transferred to the base plate 12 or the liquid cooling plate through the first section 43 corresponding to the first groove 33.

[0062] According to one embodiment of this application, such as Figure 3 and Figure 9 As shown, the second groove 34 is located between the first groove 33 and the side beam 13. That is, the second groove 34 is closer to the side beam 13 than the first groove 33. Correspondingly, the second segment 44 is also closer to the side beam 13, facilitating the transfer of heat from the power extraction component 40 to the side beam 13 via the second segment 44. The first groove 33 is closer to the opening 32, and the use of a larger mounting groove 31 in the opening 32 facilitates the installation of the power extraction component 40. It should be noted that various shapes of power extraction components 40 can be installed in the mounting groove 31 of this embodiment, such as straight or L-shaped components, etc., without limitation.

[0063] Optionally, the contact area between the second segment 44 and the inner wall surface of the mounting groove 31 near the side beam 13 is greater than the contact area between the first segment 43 and the inner wall surface of the mounting groove 31 near the cell assembly. For example, as Figure 3 , Figure 4 , Figure 6 and Figure 9As shown, the left end face of the first segment 43 extends towards the side of the battery cell assembly, and the contact area between it and the first groove 33 is S1. The right side face of the second segment 44 is located near the side beam 13, and the contact area between the right side face of the second segment 44 and the inner wall of the second groove 34 is S2. By making S1 < S2, heat from the power lead-out member 40 can be prevented from being transferred to the battery cell assembly, thus improving the efficiency of transferring heat from the power lead-out member 40 to the side beam 13. Furthermore, by extending the first segment 43 to the left, a larger area of ​​the opening 32 is exposed on the upper end face of the first segment 43, improving the efficiency of heat extraction through the first segment 43.

[0064] According to one embodiment of this application, such as Figure 2 As shown, the battery pack 100 also includes a liquid cooling plate 50, which has flow channels. The liquid cooling plate 50 is thermally connected to the power lead-out component 40, enabling the transfer of heat from the power lead-out component 40 to the liquid cooling plate 50. The liquid cooling plate 50 can be positioned on the upper and / or lower part of the tray 10; that is, the liquid cooling plate 50 can be used as the top and / or bottom plate 12 of the tray 10, or used in conjunction with the tray 10. The liquid cooling plate 50 can be made of metal, such as aluminum alloy, or it can be made of composite materials.

[0065] According to one embodiment of this application, such as Figure 2 and Figure 3 As shown, the battery pack 100 also includes a first heat-conducting element 60, which is thermally connected to the first segment 43 and the liquid cooling plate 50. The first heat-conducting element 60 transfers heat from the power lead-out component 40 and the cell assembly to the liquid cooling plate 50. The first heat-conducting element 60 can be coated onto the plane of the first segment 43 in contact with the liquid cooling plate 50. In some specific embodiments of this application, the fixing bracket 30 can be selected according to usage requirements. For example, the fixing bracket 30 can be made of engineering plastics, such as ABS, PP, etc.; the fixing bracket 30 can also be made of composite materials, such as glass fiber; the fixing bracket 30 can also be made of metal materials, such as aluminum alloy or steel. When a metal material is used, the outer surface of the fixing bracket 30 is insulated. When the fixing bracket 30 is made of metal, heat from the power lead-out component 40 can be transferred to the fixing bracket 30. When the fixing bracket 30 is made of heat-insulating material, the heat of the power lead-out component 40 can be effectively isolated from the battery cell 22 by using the fixing bracket 30 with heat insulation effect. At this time, the power lead-out component 40 can be connected to the liquid cooling plate 50 and other heat-conducting components through the first heat-conducting component 60.

[0066] In some specific embodiments of this application, such as Figure 4 As shown, the power lead-out component 40 is pre-embedded in the fixed bracket 30 or detachably connected to the fixed bracket 30, allowing for installation in various ways and providing high flexibility.

[0067] According to one embodiment of this application, the battery pack 100 further includes a limiting member 70, which is disposed on the fixed bracket 30 to limit the position of the power lead-out member 40. The limiting member 70 can limit the relative positional relationship between the power lead-out member 40 and the fixed bracket 30.

[0068] In some specific embodiments of this application, the limiting member 70 is detachably connected to the power lead-out member 40. By adopting a detachable installation method, it is beneficial to install and remove the limiting member 70 and the power lead-out member 40.

[0069] According to one embodiment of this application, the limiting member 70 is engaged or screwed to the power lead-out member 40. When the fixing bracket 30 is made of engineering plastic, the power lead-out member 40 can be pre-embedded in the fixing bracket 30 or installed using bolts or snap-fit ​​connections. When the fixing bracket 30 is made of metal, it can be installed using bolts or snap-fit ​​connections. The outer surface of the bolts can be insulated.

[0070] When the limiting member 70 and the power lead-out member 40 are connected by a snap-fit ​​mechanism, such as Figure 7 and Figure 8 As shown, two opposing hooks can be provided at the opening 32. Because the hooks are elastic, they can open when the power lead-out component 40 is inserted into the mounting groove 31 through the opening 32, and close under the action of elastic restoring force after the power lead-out component 40 is inserted into the mounting groove 31, thus restricting the position of the power lead-out component 40 within the mounting groove 31. It should be noted that the hooks can be a certain distance from the edge of the opening 32 to avoid interference between the hooks and the tray 10, etc.

[0071] like Figure 5 and Figure 6 As shown, when the limiting member 70 and the power lead-out member 40 are connected by screws, a threaded hole can be opened in the thickness direction of the fixed bracket 30. The threaded hole communicates with the mounting groove 31. Then, the connecting bolt passes through the threaded hole and the mounting hole and is connected to the fixed bracket 30.

[0072] According to one embodiment of this application, such as Figure 3 , Figure 4 , Figures 6 to 9As shown, the fixed bracket 30 defines a cavity, and the fixed bracket 30 is provided with reinforcing ribs 35 to divide the cavity into multiple cavities 36. That is, the fixed bracket 30 is a profile with multiple cavities 36, which achieves a deformable effect. In other words, when the battery cell 22 compresses the fixed bracket 30, the fixed bracket 30 can deform. In this embodiment, the fixed bracket 30 can withstand the expansion force of the battery cell 22. Furthermore, the vertical cross-section of the cavity 36 is rectangular. That is, when the fixed bracket 30 extends in the vertical direction, the reinforcing ribs 35 extend in the horizontal direction, which not only withstands the expansion force of the battery cell 22, but also withstands the compression in the vertical direction.

[0073] According to one embodiment of this application, the side beam 13 and the fixed bracket 30 are thermally connected, for example, by filling the space between the fixed bracket 30 and the side beam 13 with a thermally conductive material to transfer heat. When the power lead 40 generates heat, since the power lead 40 is thermally connected to the side beam 13, the heat from the power lead 40 can be transferred to the entire tray 10 via the side beam 13, and the tray 10 can conduct the heat to the outside. The tray 10 has a large area, which can quickly dissipate the heat and prevent heat from accumulating on the power lead 40, thereby preventing the power lead 40 from overheating and causing heat to be transferred to the inside of the battery cell 22, affecting the performance of the battery cell 22.

[0074] Therefore, by placing the power lead-out component 40 between the inner side of the tray 10 and the cell assembly, and thermally connecting the power lead-out component 40 with the side beam 13, the heat of the power lead-out component 40 can be transferred to the tray 10, which can effectively and timely dissipate heat from the power lead-out component 40 and prevent the heat of the power lead-out component 40 from being transferred to the cell 22 and causing adverse effects on the cell 22.

[0075] According to one embodiment of this application, such as Figure 2 and Figure 9As shown, the battery pack 100 also includes a second heat-conducting element 80, which is located between the side beam 13 and the fixed bracket 30, and is connected to both the side beam 13 and the fixed bracket 30. That is, the second heat-conducting element 80 is disposed between the power lead-out member 40 and the inner surface of the side beam 13. When the second heat-conducting element 80 is installed between the power lead-out member 40 and the inner surface of the side beam 13, the first side of the fixed bracket 30 faces the power lead-out member 40, and the second side of the fixed bracket 30 faces the inner surface of the side beam 13. The inner surface of the side beam 13 refers to the surface of the side beam 13 located within the receiving groove 11. The first side of the fixed bracket 30 contacts the inner surface of the side beam 13, and the second side of the fixed bracket 30 contacts the power lead-out member 40. When the power lead-out member 40 generates heat, the heat can be transferred to the tray 10 via the fixed bracket 30, and the tray 10 can conduct the heat to the outside. In addition, the tray 10 has a large area, which can quickly dissipate heat and prevent heat from accumulating on the power lead 40, thus preventing the power lead 40 from overheating and causing heat to be transferred to the inside of the battery cell 22, affecting the performance of the battery cell 22.

[0076] Optionally, the first thermally conductive element 60 and the second thermally conductive element 80 are made of thermally conductive structural adhesive, thermally conductive silicone, thermally conductive grease or other materials suitable for thermal conduction.

[0077] According to one embodiment of this application, such as Figure 2 As shown, multiple battery cells 22 are arranged along a first direction to form a battery cell array 21, where the first direction is the thickness direction of the battery cells 22. A fixing bracket 30 is located on one side of the battery cell array 21 along the first direction, and the fixing bracket 30 is connected to both the side beam 13 and the battery cell array 21. When a battery cell 22 in the battery cell array 21 expands along its thickness direction, the fixing bracket 30 can constrain the expansion of the battery cell 22, which helps to improve the lifespan of the battery cell 22 and also prevents the expansion force of the battery cell 22 from damaging the power lead-out component 40. In other words, the fixing bracket 30 is positioned opposite the large surface area of ​​the battery cell 22, and the large surface area of ​​the battery cell 22 is more prone to expansion than the small surface area of ​​the battery cell 22. Here, the large surface area of ​​the battery cell 22 refers to the side with a larger outer surface area, and the small surface area of ​​the battery cell 22 refers to the side with a smaller outer surface area.

[0078] In some specific embodiments of this application, such as Figure 2As shown, the battery cell assembly includes multiple cell arrays 21, which are arranged and electrically connected along a second direction, where the second direction is the length direction of the cell 22. The battery pack 100 includes multiple fixing brackets 30, which are located on one side of the battery cell assembly and are configured in a one-to-one correspondence with the cell arrays 21. That is, when the battery cell assembly includes multiple cell arrays 21, each cell array 21 includes multiple cells 22. The multiple cells 22 within each cell array 21 are arranged sequentially along a first direction and are electrically connected to each other. The multiple cell arrays 21 are arranged sequentially facing a second direction and are electrically connected to each other. The second direction may be perpendicular to the first direction.

[0079] In some specific embodiments of this application, such as Figure 1 As shown, the main electrode includes a main positive electrode and a main negative electrode. The power lead 40 is a copper busbar connected to the main negative electrode, or the power lead 40 is an aluminum busbar connected to the main positive electrode. When one end of the power lead 40 is connected to the main negative electrode, the power lead 40 can be a copper busbar, capable of leading out the main negative electrode. When one end of the power lead 40 is connected to the main positive electrode, the power lead 40 can be an aluminum busbar, capable of leading out the main positive electrode. The main positive electrode and the main negative electrode can be located at opposite ends of the battery pack 100 in the second direction.

[0080] According to one embodiment of this application, such as Figure 2 As shown, one end of the power lead-out member 40 is provided with a first bend 41, and the other end of the power lead-out member 40 is provided with a second bend 42. The first bend 41 is connected to the main electrode, and the second bend 42 is used to connect to the distribution box. That is, the first bend 41 can be connected to the main positive or main negative electrode, and the second bend 42 can lead out the main positive or main negative electrode of the battery cell assembly and connect it to the distribution box.

[0081] In summary, according to the battery pack 100 of this application embodiment, by providing a fixing bracket 30 between the cell assembly and the side beam 13, the mounting groove 31 within the fixing bracket 30 not only supports and mounts the power lead 40, but also, by being spaced apart from the inner side of the side beam 13 and the cell assembly, it isolates the cell assembly from the power lead 40, further preventing heat transfer from the power lead 40 to the cell 22. Through the thermally conductive connection between the power lead 40 and the tray 10, heat from the power lead 40 can also be transferred to the tray 10.

[0082] According to an embodiment of this application, a vehicle is also provided, which includes the battery pack 100 of any of the above embodiments. Since the battery pack 100 according to the embodiment of this application has the above-described technical effects, the vehicle according to the embodiment of this application also has the above-described technical effects, ultimately enabling the vehicle's battery system to operate stably and ensuring a good driving experience.

[0083] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A battery pack, characterized in that, include: The pallet includes a base plate and a plurality of side beams disposed around the base plate, the base plate and the plurality of side beams forming a receiving groove; A battery cell assembly disposed within the receiving slot, the battery cell assembly comprising a plurality of electrically connected battery cells, the battery cell assembly having a total electrode; A fixed bracket is disposed between the side beam and the battery cell assembly. The fixed bracket has mounting slots that are spaced apart from the side beam and the battery cell assembly. The fixed bracket has an opening that communicates with the mounting slots. The mounting slot includes: a first slot body that communicates with the opening; and a second slot body that is disposed between the first slot body and the side beam, communicates with the first slot body, and is located on the side of the first slot body away from the opening. A power lead-out component is connected to the main electrode and is disposed between the cell assembly and the side beam, located in the mounting groove. The power lead-out component is thermally connected to the tray. The power lead-out component includes: a first segment located in the first groove; and a second segment connected to the first segment and located in the second groove. The contact area between the second segment and the inner wall surface of the mounting groove near the side beam is greater than the contact area between the first segment and the inner wall surface of the mounting groove near the cell assembly.

2. The battery pack according to claim 1, characterized in that, Also includes: Liquid cooling plate, wherein the liquid cooling plate is provided with flow channels; The first heat-conducting component is thermally connected to the first segment and the liquid cooling plate, respectively.

3. The battery pack according to claim 1, characterized in that, The power lead-out component is embedded in the fixed bracket or detachably connected to the fixed bracket.

4. The battery pack according to claim 1, characterized in that, Also includes: A limiting member is provided on the fixed bracket to limit the position of the power lead-out member, and the limiting member is detachably connected to the power lead-out member.

5. The battery pack according to claim 4, characterized in that, The limiting member is engaged or screwed to the power lead-out member.

6. The battery pack according to claim 1, characterized in that, The fixed bracket defines a cavity, and the fixed bracket is provided with reinforcing ribs to divide the cavity into multiple cavities.

7. The battery pack according to claim 1, characterized in that, The side beam and the fixed bracket are thermally connected.

8. The battery pack according to claim 7, characterized in that, Also includes: The second heat-conducting component is located between the side beam and the fixed bracket, and is connected to both the side beam and the fixed bracket.

9. The battery pack according to claim 1, characterized in that, Multiple battery cells are arranged along a first direction to form a battery cell array, the first direction being the thickness direction of the battery cells, the fixing bracket is located on one side of the battery cell array along the first direction, and the fixing bracket is connected to the side beam and the battery cell array respectively.

10. The battery pack according to claim 9, characterized in that, The battery cell assembly includes a plurality of battery cell arrays, which are arranged and electrically connected along a second direction, wherein the second direction is the length direction of the battery cell; The battery pack includes a plurality of fixing brackets, which are located on one side of the cell assembly, and the fixing brackets are arranged in a one-to-one correspondence with the cell array.

11. The battery pack according to claim 1, characterized in that, The main electrode includes a main positive electrode and a main negative electrode. The power lead-out component is a copper busbar and is connected to the main negative electrode, or the power lead-out component is an aluminum busbar and is connected to the main positive electrode.

12. The battery pack according to claim 1, characterized in that, One end of the power lead-out component is provided with a first bend, and the other end of the power lead-out component is provided with a second bend. The first bend is connected to the main electrode, and the second bend is used to connect to the distribution box.

13. A vehicle, characterized in that, Includes the battery pack described in any one of claims 1-12.

Images