Battery pack and vehicle

Abstract

The utility model relates to the technical field of power batteries, in particular to a battery pack and a vehicle. The battery pack comprises a plurality of single batteries, a plurality of liquid cooling plates and a plurality of brackets; the battery pack has a first direction and a second direction; the plurality of liquid cooling plates are arranged at intervals in the first direction, and the plurality of liquid cooling plates are parallel to one another; the liquid cooling plate comprises a first plate part and a second plate part which communicate with each other, and the multiple supports are arranged at intervals in the second direction and are parallel to each other; each support is provided with through holes in the first direction, the liquid cooling plates penetrate through the through holes, and the liquid cooling plates are connected with the supports in an inserted mode through the through holes corresponding to the liquid cooling plates in position. A mounting space is defined by two adjacent brackets and the first plate part and the second plate part of the same liquid cooling plate, and the single batteries are fixed in the mounting space. According to the battery pack and the vehicle, the problems that an existing battery pack is poor in rigidity and cannot directly bear loads brought by other parts of an electric device, safety accidents are likely to happen, and the safety of the electric device is affected are solved.

Description

Technical Field

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

[0002] In recent years, the emergence of new energy vehicles has played a huge role in promoting social development and environmental protection. As a rechargeable battery, the power source of new energy vehicles is widely used in the field of new energy vehicles.

[0003] However, existing battery packs have poor rigidity and cannot directly withstand the loads from other parts of the electrical device, which can easily lead to safety accidents and affect the safety of the electrical device. Utility Model Content

[0004] The purpose of this application is to provide a battery pack and vehicle that solves the problem that existing battery packs have poor rigidity, cannot directly withstand the load from other parts of the electrical device, are prone to safety accidents, and affect the safety of the electrical device.

[0005] According to a first aspect of this application, a battery pack is provided, including a plurality of individual cells, a plurality of liquid cooling plates, and a plurality of brackets; the battery pack has intersecting first and second directions; the plurality of liquid cooling plates are spaced apart in the first direction, each liquid cooling plate including a communicating first plate portion and a second plate portion, the first plate portion and the second plate portion being spaced apart in the first direction and parallel to each other; the plurality of brackets are spaced apart in the second direction and parallel to each other; a plurality of through holes are provided on each bracket for the plurality of liquid cooling plates to pass through, the plurality of through holes being spaced apart in the first direction; the first plate portion and the second plate portion of each liquid cooling plate are inserted into the plurality of brackets through corresponding through holes; two adjacent brackets and the first plate portion and the second plate portion of the same liquid cooling plate enclose an installation space, and the individual cells are fixed in the installation space.

[0006] In any of the above technical solutions, the liquid cooling plate further includes a third plate portion, wherein the first plate portion, the third plate portion, and the second plate portion are sequentially connected; the same end of the first plate portion and the second plate portion in the second direction is connected to the third plate portion; and the third plate portion extends along the first direction.

[0007] In any of the above technical solutions, further, the plurality of supports include end supports disposed at both ends in the second direction and a middle support disposed between the end supports; the middle support includes a top, and a fixing plate is disposed on the top of the middle support, the side of the fixing plate near the single cell contacting the single cell.

[0008] In any of the above technical solutions, the battery pack further satisfies: 1 / 3*L2>L3>L4; where L3 is the dimension of the fixing plate in the second direction, in mm, L2 is the dimension of each individual cell in the second direction, in mm, and L4 is the gap dimension between two adjacent individual cells in the second direction, in mm.

[0009] In any of the above technical solutions, the single cell further includes at least one terminal post, the single cell includes a top, and the terminal post is disposed on the top of the single cell; the single cell includes a first side and a second side opposite to each other in the second direction, and the distance of any terminal post to the first side and the second side is greater than the dimension of the fixing plate in the second direction.

[0010] In any of the above technical solutions, further, an elastic washer is provided between the first plate portion and the second plate portion and the through hole; and / or, a wear-resistant coating is applied to the corresponding positions of the first plate portion and the second plate portion.

[0011] In any of the above technical solutions, the single battery cell includes a top and a bottom, the terminal post of the single battery cell is disposed at the top or bottom of the single battery cell, and the explosion-proof valve of the single battery cell is disposed at the bottom of the single battery cell; the battery pack also includes a bottom cover; the bracket includes a bottom, the bottom of the plurality of brackets is connected to the bottom cover, the plurality of single batteries cell is connected to the liquid cooling plate or the bracket, and an exhaust space is provided between the bottom of the plurality of single batteries cell and the bottom cover.

[0012] In any of the above technical solutions, the battery pack further includes a top cover and a side beam; the bottom cover includes a mounting groove and a mounting eaves disposed on the outer edge of the mounting groove; the side beam includes a hollow opening for accommodating the plurality of individual batteries, and the side beam connects the top cover and the mounting eaves; the mounting groove includes a bottom surface facing the bracket, the bottom of the plurality of brackets is connected to the bottom surface of the mounting groove, and an exhaust space is provided between the bottom of the plurality of individual batteries and the bottom surface of the mounting groove.

[0013] In any of the above technical solutions, the individual battery cell is further bonded to the bracket, and the individual battery cell is in contact with the liquid cooling plate.

[0014] According to a second aspect of this application, a vehicle is provided, including the battery pack described above.

[0015] In any of the above technical solutions, the battery pack is further installed at the bottom of the vehicle; when the vehicle is in use, the bottom cover of the battery pack is located at the bottommost end of the battery pack.

[0016] The battery pack of this application includes multiple individual cells, multiple liquid cooling plates, and multiple brackets. The battery pack has intersecting first and second directions. Multiple liquid cooling plates are spaced apart in the first direction, each liquid cooling plate having a connected first plate portion and a second plate portion, which are spaced apart and parallel to each other. Multiple brackets are spaced apart and parallel to each other in the second direction. Each bracket has a through hole in the first direction through which multiple liquid cooling plates pass, and each liquid cooling plate is inserted into the multiple brackets through a corresponding through hole. Adjacent brackets and the same liquid cooling plate enclose an installation space, and the individual cells are fixed within the installation space.

[0017] Based on the above technical features, the beneficial effects of this application are as follows:

[0018] This application features multiple liquid cooling plates and multiple brackets that are cross-connected. Each liquid cooling plate is inserted into multiple brackets through corresponding through holes. Two adjacent brackets and two edges of the same liquid cooling plate together form a robust fixing structure (installation space) for the fixed installation of individual cells, ensuring the strength of the individual cells. In this way, all individual cells in this application are restricted and fixed on all sides, improving the rigidity of the battery pack and enabling it to withstand loads from other parts of the electrical device, thereby reducing safety accidents and improving the safety of the battery pack and the electrical device.

[0019] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the assembly structure of the U-shaped liquid cooling plate and bracket of this application is shown;

[0022] Figure 2 Show Figure 1 Top view;

[0023] Figure 3 Show Figure 2Enlarged schematic diagram of part A;

[0024] Figure 4 A schematic diagram of the exploded structure of the battery pack of this application is shown;

[0025] Figure 5 A schematic diagram of the overall structure of the battery pack of this application is shown;

[0026] Figure 6 Show Figure 5 A schematic diagram obtained from a plane cross-section defined along the length and thickness directions;

[0027] Figure 7 Show Figure 5 A schematic diagram obtained from a plane section defined along the width and thickness directions;

[0028] Figure 8 A schematic diagram of the assembly structure of the single cell and the bracket of this application is shown;

[0029] Figure 9 Show Figure 7 Enlarged schematic diagram of part B;

[0030] Figure 10 Show Figure 8 Enlarged schematic diagram of part C;

[0031] Figure 11 This paper shows a schematic diagram of the overall structure of a single cell under the first example of this application;

[0032] Figure 12 Show Figure 11 A schematic diagram of the exploded structure;

[0033] Figure 13 This invention provides a schematic diagram of the overall structure of a single cell under the second example of this application.

[0034] Figure 14 Show Figure 13 Another structural diagram from a different perspective;

[0035] Figure 15 Show Figure 1 A partial structural diagram.

[0036] Icons: 100-Bracket; 101-Middle bracket; 1011-Fixing plate; 102-End bracket; 200-Liquid cooling plate; 201-First plate; 202-Second plate; 203-Third plate; 300-Single battery; 301-Terminal post; 302-Explosion-proof valve; 303-Electrode assembly; 304-Top cover; 305-Housing; 400-Bottom cover; 401-Mounting groove; 4011-Bottom surface; 402-Mounting eaves; 403-Exhaust space; 500-Top cover; 600-Side beam; 601-Hollow opening; 700-Mounting space; X-Second direction; Y-First direction; Z-Third direction. Detailed Implementation

[0037] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0038] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0039] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0040] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0041] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0042] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0043] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0044] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0045] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0046] Prior to this application, existing battery packs had poor rigidity and could not directly withstand the loads from other parts of the electrical device, which could easily lead to safety accidents and affect the safety of the electrical device.

[0047] In view of this, the first aspect of this application provides a battery pack that improves the rigidity of individual cells and the battery pack, enabling it to withstand loads from other parts of the electrical device, reducing safety accidents, and improving the safety of the battery pack and the electrical device. See below for reference. Figures 1 to 15 This application describes a battery pack and a single battery cell according to some embodiments.

[0048] like Figure 1 and Figure 4 As shown, the battery pack of this application includes multiple individual battery cells 300, multiple U-shaped liquid cooling plates 200, and multiple brackets 100. The battery pack has intersecting first direction Y and second direction X; the multiple U-shaped liquid cooling plates 200 are spaced apart in the first direction Y, and the multiple U-shaped liquid cooling plates 200 are parallel to each other. Figure 15 As shown, the U-shaped liquid cooling plate 200 includes a first plate portion 201, a third plate portion 203, and a second plate portion 202 connected in sequence. The first plate portion 201 and the second plate portion 202 are spaced apart in the first direction Y and are parallel to each other. The same end of the first plate portion 201 and the second plate portion 202 in the second direction X is connected to the third plate portion 203, and the third plate portion 203 extends along the first direction Y. Multiple brackets 100 are spaced apart in the second direction X and are parallel to each other. Multiple U-shaped liquid cooling plates 200 and multiple brackets 100 are cross-connected. Each bracket 100 has a through hole in the first direction Y for multiple U-shaped liquid cooling plates 200 to pass through. Each U-shaped liquid cooling plate 200 is inserted into multiple brackets 100 through the through hole corresponding to its position. Two adjacent brackets 100 and the same U-shaped liquid cooling plate 200 enclose an installation space 700, and the single battery 300 is fixed in the installation space 700.

[0049] In other words, the multiple U-shaped liquid cooling plates 200 and multiple brackets 100 of this application are cross-connected, and each U-shaped liquid cooling plate 200 is inserted into the multiple brackets 100 through corresponding through holes. The two adjacent brackets 100 and the two sides of the same U-shaped liquid cooling plate 200 together form a robust fixing structure (installation space 700) for the fixed installation of the individual battery cells 300, ensuring the strength of the individual battery cells 300. In this way, all the individual battery cells 300 of this application are restricted and fixed on all sides, which improves the rigidity of the battery pack, enabling it to withstand the load from other parts of the electrical device, thereby reducing safety accidents and improving the safety of the battery pack and the electrical device.

[0050] In the embodiments of this application, for ease of description, the following description refers to the first direction Y, the second direction X, and the third direction Z of the battery pack. The first direction Y, the second direction X, and the third direction Z are mutually perpendicular; the first direction Y is the width direction of the battery pack; the second direction X is the length direction of the battery pack; and the third direction Z is the thickness direction of the battery pack.

[0051] Preferably, the plurality of U-shaped liquid cooling plates 200 of this application are spaced apart in the first direction Y (width direction), and each U-shaped liquid cooling plate 200 extends along the second direction X (length direction); the plurality of brackets 100 are spaced apart in the second direction X (length direction), and each bracket 100 extends along the first direction Y (width direction), and each bracket 100 is parallel to the third direction Z (thickness direction). This arrangement not only facilitates the manufacturing and assembly of the plurality of U-shaped liquid cooling plates 200 and the plurality of brackets 100, but also provides better fixation for the individual battery cells 300. In addition, the spaced arrangement of the plurality of U-shaped liquid cooling plates 200 in the first direction Y (width direction) of this application can also save the number of U-shaped liquid cooling plates and increase the energy density of the battery pack.

[0052] In the embodiments of this application, two adjacent brackets 100 and the same U-shaped liquid cooling plate 200 (the first plate portion 201 and the second plate portion 202 of the same U-shaped liquid cooling plate 200) are jointly arranged to form a robust fixing structure (installation space 700), which can be designed according to the size of the single cell 300.

[0053] like Figure 2 and Figure 3 As shown, the length of the fixed structure (installation space 700) is L1 (the distance between the two brackets 100), and the width is W1 (the distance between the first plate 201 and the second plate 202); as Figure 11 As shown, the length of the single cell 300 is L2, and the thickness is W2. The fixing structure (installation space 700) should match the dimensions of the single cell 300, and the battery pack structure should satisfy: L2 < L1, W2 < W1; wherein, L1 and W1 can be adjusted according to the width L2 and thickness W2 of the single cell 300. In addition, the large surface of the single cell 300 in this application is attached to the two sides of the U-shaped liquid cooling plate 200, thus achieving better cooling / heating effects.

[0054] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the manifolds of the U-shaped liquid cooling plate 200 of this application are located at the same end (not shown in the manifold diagram), and the two openings at the same end of the U-shaped liquid cooling plate 200 are the liquid inlet and the liquid outlet, respectively.

[0055] Furthermore, the cross-sectional shape of the internal flow channel of the U-shaped liquid cooling plate 200 is not limited to a rectangle; it can also be triangular, parallelogram, etc. Figure 9 (This illustrates the arc-shaped form at both ends of the internal flow channel). Furthermore, the U-shaped liquid cooling plate 200 can be made of metal or plastic. If metal is used, the surface of the U-shaped liquid cooling plate 200 needs to be coated with an insulating layer; if plastic is used, it can directly contact the individual battery cell 300.

[0056] Furthermore, in the embodiments of this application, an elastic washer may be provided between the U-shaped liquid cooling plate 200 and the through hole, and / or a wear-resistant coating may be applied to the corresponding position of the U-shaped liquid cooling plate 200, so as to effectively prevent mutual wear between the U-shaped liquid cooling plate 200 and the through hole of the bracket 100.

[0057] The following section will describe the specific mounting method for the 300 individual cells.

[0058] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the plurality of supports 100 include end supports 102 disposed at both ends of the battery pack opposite each other in the second direction X (length direction) and a plurality of middle supports 101 disposed in the middle. Figure 10 As shown, each central support 101 has a fixing plate 1011 at its top, which extends to both sides in the second direction X (length direction). The bottom surface of the same fixing plate 1011 contacts the adjacent individual battery cells 300 on both sides. Each end support 102 has an end fixing plate at its top, which is half the size of the fixing plate 1011 in the second direction X. The end fixing plate extends only to the side where the central support 101 is located, and the bottom surface of the same end fixing plate contacts the individual battery cell 300 on one side. For example, the two ends of the individual battery cell 300 are bonded to two adjacent central supports 101, and the top of the individual battery cell 300 is bonded to the fixing plate 1011. The fixing plate 1011 of this application not only strengthens the fixation of the individual battery cell 300, but also further improves the overall rigidity of the battery pack.

[0059] In the embodiments of this application, such as Figure 10 and Figure 11As shown, the battery pack satisfies the following condition: 1 / 3 * L2 > L3 > L4. Here, L3 is the dimension of the fixing plate 1011 in the second direction X (length direction), in mm; L2 is the dimension of each individual battery cell 300 in the second direction X (length direction), in mm; and L4 is the gap dimension between two adjacent individual battery cells 300 in the second direction X (length direction), in mm. This configuration ensures that the battery pack satisfies 1 / 3 * L2 > L3 > L4, preventing mutual interference between adjacent fixing plates 1011.

[0060] In embodiments of this application, the battery pack should also satisfy: D > L3 > L4. The single-cell battery 300 of this application includes at least one terminal post 301, which is disposed on the top of the single-cell battery 300, i.e., when both the terminal post 301 and the fixing plate 1011 are located on the top of the single-cell battery 300 (…). Figure 10 (The diagram shows the terminal post 301 positioned at the bottom of the single cell 300); the battery pack should satisfy: D > L3 > L4. Wherein, D is the distance from the terminal post 301 to the side of the single cell 300, meaning that the single cell 300 includes a first side and a second side opposite to each other in the second direction X (length direction), and the distance from any terminal post 301 to the first side and the second side is greater than the dimension of the fixing plate 1011 in the second direction X (length direction).

[0061] In the embodiments of this application, such as Figure 10 As shown, the height H1 of the bracket 100 should be greater than the height H2 of the single battery cell 300. In the embodiments of this application, as... Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the battery pack also includes a bottom cover 400. The bottoms of multiple brackets 100 are connected to the bottom cover 400. In this way, on the one hand, the portion of the bracket 100 that protrudes above the individual battery 300 (i.e., the space between the bottom of the individual battery 300 and the bottom cover 400) can be used for the installation of the terminal posts 301, contact plates, and other connection devices of the individual battery 300, as well as the installation of insulation devices such as foam; on the other hand, the portion of the bracket 100 that protrudes above the individual battery 300 (i.e., the space between the bottom of the individual battery 300 and the bottom cover 400) can be used to provide an exhaust space 403.

[0062] In the embodiments of this application, such as Figure 12 As shown, the single-cell battery 300 includes a housing 305, an electrode assembly 303, top cover plates 304 at both ends, terminal posts 301, and an explosion-proof valve 302. In Example 1, as... Figure 12 As shown, the terminal post 301 and the explosion-proof valve 302 of the single cell 300 are both located at one end of the single cell 300. In Example 2, as... Figure 13 and Figure 14As shown, the terminal post 301 and the explosion-proof valve 302 of the single cell 300 are respectively disposed at both ends of the single cell 300.

[0063] In both Example 1 and Example 2, the explosion-proof valve 302 of the individual battery 300 is positioned downwards (towards the bottom cover 400). This allows the runaway material to be smoothly discharged into the venting space 403 in the event of thermal runaway in the individual battery 300. Furthermore, this design maximizes passenger safety in the event of thermal runaway in the individual battery 300. Simultaneously, the venting space 403 and the bottom protective space of the battery pack are combined, improving the space utilization rate of the battery pack in the Z-direction (thickness direction), thereby increasing the energy density of the battery pack.

[0064] In the embodiments of this application, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the battery pack also includes a top cover 500 and side beams 600. The bottom cover 400 includes a mounting groove 401 and a mounting eave 402 disposed on the outer edge of the mounting groove 401; as shown... Figure 4 As shown, the side beam 600 includes a hollow opening 601 for accommodating multiple individual battery cells 300. The side beam 600 connects the top cover 500 and the mounting eaves 402. The bottoms of multiple brackets 100 are connected to the bottom surface 4011 of the mounting groove 401, and the fixing plates 1011 of the multiple brackets 100 are connected to the top cover 500. An exhaust space 403 is provided between the bottoms of the multiple individual battery cells 300 and the bottom surface 4011 of the mounting groove 401. In other words, the space enclosed by the side beam 600 of this application accommodates multiple individual battery cells 300, multiple brackets 100, and multiple U-shaped liquid cooling plates 200. The side beam 600 and the multiple brackets 100 connect and fix the bottom cover 400 and the top cover 500 to form a robust cavity structure, thereby further improving the overall rigidity of the battery pack and reducing the probability of damage to the individual battery cells 300.

[0065] A second aspect of this application provides a vehicle including the battery pack described above. When the vehicle is in use, the battery pack is mounted at the bottom of the vehicle, and the bottom cover 400 of the battery pack is located at the very bottom of the battery pack. This maximizes passenger safety in the event of thermal runaway of the battery pack. Simultaneously, the venting space 403 and the bottom protection space of the battery pack are combined, improving the space utilization rate in the Z-direction (thickness direction) of the battery pack, thereby increasing the energy density of the battery pack.

[0066] Based on this, the battery pack of this application has a certain degree of rigidity, which can withstand the load from other parts of the vehicle, thereby reducing safety accidents and improving the safety of the battery pack and the vehicle.

[0067] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A battery pack, characterized in that, It includes multiple individual cells (300), multiple liquid cooling plates (200), and multiple brackets (100); The battery pack has intersecting first direction (Y) and second direction (X); The plurality of liquid cooling plates (200) are spaced apart in the first direction (Y). Each liquid cooling plate (200) includes a first plate portion (201) and a second plate portion (202) that are connected. The first plate portion (201) and the second plate portion (202) are spaced apart in the first direction (Y) and are parallel to each other. The plurality of supports (100) are spaced apart in the second direction (X) and are parallel to each other; The bracket (100) has multiple through holes for the multiple liquid cooling plates (200) to pass through, and the multiple through holes are spaced apart in the first direction (Y); the first plate portion (201) and the second plate portion (202) of each liquid cooling plate (200) are inserted into the multiple brackets (100) through the corresponding through holes; The first plate portion (201) and the second plate portion (202) of the two adjacent brackets (100) and the same liquid cooling plate (200) are arranged to form an installation space (700), and the single battery (300) is fixed in the installation space (700).

2. The battery pack according to claim 1, characterized in that, The liquid cooling plate (200) further includes a third plate portion (203), wherein the first plate portion (201), the third plate portion (203) and the second plate portion (202) are connected in sequence; the same end of the first plate portion (201) and the second plate portion (202) in the second direction (X) is connected to the third plate portion (203); The third plate portion (203) extends along the first direction (Y).

3. The battery pack according to claim 1, characterized in that, The plurality of supports (100) includes end supports (102) disposed at both ends in the second direction (X) and a middle support (101) disposed between the end supports (102); The central support (101) includes a top, and a fixing plate (1011) is provided on the top of the central support (101). The side of the fixing plate (1011) near the individual battery (300) is in contact with the individual battery (300).

4. The battery pack according to claim 3, characterized in that, The battery pack satisfies: 1 / 3*L2>L3>L4; Wherein, L3 is the dimension of the fixing plate (1011) in the second direction (X), in mm; L2 is the dimension of each individual cell (300) in the second direction (X), in mm; and L4 is the gap dimension between two adjacent individual cells (300) in the second direction (X), in mm.

5. The battery pack according to claim 3, characterized in that, The single cell (300) includes at least one terminal (301), the single cell (300) includes a top, and the terminal (301) is disposed on the top of the single cell (300); The single cell (300) includes a first side and a second side opposite to each other in the second direction (X), and the distance from any of the poles (301) to the first side and the second side is greater than the dimension of the fixing plate (1011) in the second direction (X).

6. The battery pack according to claim 3, characterized in that, An elastic washer is provided between the first plate portion (201) and the second plate portion (202) and the through hole; And / or, the corresponding positions of the first plate portion (201) and the second plate portion (202) are coated with a wear-resistant coating.

7. The battery pack according to any one of claims 1-4, characterized in that, The single cell (300) includes a top and a bottom, the terminal post (301) of the single cell (300) is disposed at the top or bottom of the single cell (300), and the explosion-proof valve (302) of the single cell (300) is disposed at the bottom of the single cell (300). The battery pack also includes a bottom cover (400); The bracket (100) includes a bottom, the bottom of the plurality of brackets (100) is connected to the bottom cover (400), the plurality of individual batteries (300) are connected to the liquid cooling plate (200) or the bracket (100), and an exhaust space (403) is provided between the bottom of the plurality of individual batteries (300) and the bottom cover (400).

8. The battery pack according to claim 7, characterized in that, The battery pack also includes a top cover (500) and side beams (600); The bottom cover (400) includes a mounting groove (401) and a mounting eave (402) disposed on the outer edge of the mounting groove (401); The side beam (600) includes a hollow opening (601) for accommodating the plurality of individual battery cells (300), and the side beam (600) connects the top cover (500) and the mounting eaves (402); The mounting groove (401) includes a bottom surface (4011) facing the bracket (100), the bottom of the plurality of brackets (100) is connected to the bottom surface (4011) of the mounting groove (401), and an exhaust space (403) is provided between the bottom of the plurality of individual batteries (300) and the bottom surface (4011) of the mounting groove (401).

9. The battery pack according to claim 7, characterized in that, The individual battery cell (300) is bonded to the bracket (100), and the individual battery cell (300) is in contact with the liquid cooling plate (200).

10. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 7 to 9; The battery pack is installed at the bottom of the vehicle; When the vehicle is in use, the bottom cover (400) of the battery pack is located at the bottom of the battery pack.

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