Battery pack and vehicle

Abstract

The application is suitable for the technical field of batteries, and provides a battery pack and a vehicle. The vehicle comprises the battery pack. The battery pack comprises a plurality of single batteries, a frame and a protection plate. The plurality of single batteries are distributed along an X axis at intervals. The frame comprises two end plates. At least one end plate is penetrated by a plurality of first ventilation channels which are distributed along the X axis at intervals. The protection plate is arranged between the two end plates and is located on one side of each single battery along a Z axis. The protection plate is formed with a plurality of accommodation portions and a plurality of separation portions along the Z axis direction. Each accommodation portion and each separation portion are arranged along a Y axis and are distributed along the X axis at intervals. Each single battery is arranged in each accommodation portion correspondingly. The projection side of each separation portion along the Z axis forms a second ventilation channel with an adjacent single battery. The plurality of first ventilation channels on the end plate and the plurality of second ventilation channels are in one-to-one correspondence and are communicated. In this way, each second ventilation channel is communicated with the corresponding first ventilation channel on the end plate, so that the battery pack has better heat dissipation performance.

Description

Technical Field

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

[0002] A battery pack typically consists of a battery frame and a battery. Since the battery needs to be housed within the battery frame, the battery pack inevitably suffers from poor heat dissipation. Summary of the Invention

[0003] One of the objectives of this application is to provide a battery pack that addresses the technical problem of poor heat dissipation performance in existing battery packs.

[0004] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of this application is as follows:

[0005] A battery pack is provided, comprising:

[0006] Multiple individual cells, wherein the multiple individual cells are spaced apart along the X-axis;

[0007] The frame includes two end plates, which are respectively disposed at opposite ends of each individual battery cell along the Y-axis, and at least one end plate has multiple first ventilation channels spaced apart along the X-axis.

[0008] A protective plate is disposed between the two end plates and located on one side of each individual battery cell along the Z-axis. The protective plate has a plurality of generally concave receiving portions and a plurality of generally convex partition portions formed along the Z-axis. Each receiving portion and each partition portion extends along the Y-axis and is alternately distributed along the X-axis. Each individual battery cell is correspondingly disposed within each receiving portion. The convex side of each partition portion along the Z-axis forms a second ventilation channel with the adjacent individual battery cell. The plurality of first ventilation channels on the end plates are correspondingly connected to the plurality of second ventilation channels.

[0009] In one embodiment, both end plates are permeated by the first ventilation channel, and the plurality of first ventilation channels on each end plate are connected to a plurality of second ventilation channels in a one-to-one correspondence.

[0010] In one embodiment, a cavity is formed in the end plate, and a plurality of first ventilation holes and a plurality of second ventilation holes are respectively provided on the opposite side walls of the cavity along the Y-axis. The first ventilation channel includes at least one first ventilation hole and at least one second ventilation hole. The second ventilation channel communicates with the first ventilation hole of the corresponding first ventilation channel, and any first ventilation hole is connected to any second ventilation hole through the cavity.

[0011] In one embodiment, each of the partitions has a cavity formed on the side facing away from the second ventilation channel, and the second ventilation channel and the cavity on opposite sides of the partition along the Z-axis are connected to the corresponding first ventilation channel along the Y-axis.

[0012] In one embodiment, the recessed side of the receiving portion is provided with a groove and a platform disposed on opposite sides of the groove along the X-axis. The partition is connected to the platform of the adjacent receiving portion. The single battery cell is supported on the two platforms of the corresponding receiving portion and is located between the two partitions along the X-axis.

[0013] In one embodiment, the framework further includes:

[0014] At least two longitudinal plates are spaced apart along the X-axis, and the opposite ends of each longitudinal plate are respectively connected to two end plates; a plurality of individual cells form at least one battery pack, and each battery pack is located between two adjacent longitudinal plates; the protruding side of the partition forms a second ventilation channel with two adjacent individual cells, and / or the protruding side of the partition forms a second ventilation channel with adjacent individual cells and the longitudinal plates;

[0015] At least one first beam structure is disposed on the side of the single cell where the protective plate is provided, and is connected to at least one of the longitudinal plates. The extension direction of the first beam structure and the extension direction of the longitudinal plate form an angle greater than 0°. The protective plate is disposed to avoid the longitudinal plate and the first beam structure.

[0016] In one embodiment, each of the individual battery cells includes a battery case connected between the two end plates and a cell assembly disposed within the battery case, with each battery case correspondingly disposed on the recessed side of each accommodating portion along the Z-axis.

[0017] In one embodiment, the frame further includes a second beam structure disposed on the side of each individual battery cell facing away from the protective plate and connected to each of the longitudinal plates.

[0018] In one embodiment, multiple individual cells are connected in series and / or in parallel through multiple conductive connectors; the second beam structure has multiple connecting holes spaced apart along the X-axis, each connecting hole corresponding to each individual cell; each conductive connector passes through two adjacent connecting holes, and the opposite ends of each conductive connector are respectively connected to two adjacent individual cells.

[0019] This application also provides a vehicle including the battery pack.

[0020] The beneficial effects of the battery pack and vehicle provided in this application embodiment are as follows:

[0021] The battery pack provided in this application embodiment has at least one end plate with a first ventilation channel. The protective plate has alternating partitions and accommodating portions along the Z-axis. Each individual battery cell is correspondingly disposed on the concave side of each accommodating portion along the Z-axis. Each partition's convex side along the Z-axis forms a second ventilation channel with an adjacent individual battery cell. The second ventilation channel is adjacent to the corresponding individual battery cell, and the multiple first ventilation channels on the end plate are interconnected with the multiple second ventilation channels. Understandably, the interior of the battery pack is connected to the outside through the second and first ventilation channels in sequence. Each second ventilation channel and its corresponding first ventilation channel can achieve effective heat exchange between the interior of the battery pack and the outside air. Thus, the heat generated by each individual battery cell can be dissipated to the outside air through the adjacent second ventilation channels and their corresponding first ventilation channels, thereby achieving effective heat dissipation for each individual battery cell. This results in better heat dissipation performance for the battery pack, which helps to improve its service life. Correspondingly, the vehicle provided in this application embodiment also has the advantages of good heat dissipation performance and long service life. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional schematic diagram of the battery pack provided in the embodiments of this application. Figure 1 ;

[0024] Figure 2 for Figure 1 Exploded view;

[0025] Figure 3 for Figure 1 A 3D schematic diagram of the protective plate of the provided battery pack;

[0026] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0027] Figure 5 for Figure 1 A three-dimensional sectional view of the provided battery pack;

[0028] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0029] Figure 7 for Figure 1Partial 3D diagram of the provided battery pack Figure 1 ;

[0030] Figure 8 for Figure 7 A magnified view of a section at point C;

[0031] Figure 9 for Figure 1 A three-dimensional schematic diagram of the end plate of the provided battery pack;

[0032] Figure 10 for Figure 9 A magnified view of a section at point D;

[0033] Figure 11 A three-dimensional schematic diagram of the battery pack provided in the embodiments of this application. Figure 2 ;

[0034] Figure 12 for Figure 11 A magnified view of a section at point E in the middle;

[0035] Figure 13 A three-dimensional schematic diagram of the battery pack provided in the embodiments of this application. Figure 3 ;

[0036] Figure 14 for Figure 1 Exploded view of two individual cells in the provided battery pack;

[0037] Figure 15 for Figure 1 Partial 3D diagram of the provided battery pack Figure 2 ;

[0038] Figure 16 for Figure 15 A magnified view of a section at point F in the middle;

[0039] Figure 17 for Figure 14 A magnified view of a section at point G.

[0040] The following are the labeling elements in the figure:

[0041] 10-Single battery cell; 11-Battery casing; 12-Cell assembly; 121-Single cell cell; 122-Taper; 13-End cap; 20-Frame; 21-End plate; 201-Cavity; 211-First ventilation channel; 2111-First ventilation hole; 2112-Second ventilation hole; 22-Vertical plate; 23-First beam structure; 24-Second beam structure; 241-Body body; 242-Connecting strip; 2421-Connecting hole; 30-Protective plate; 31-Sub-plate; 32-Allowing space; 311-Separation part; 3111-Cavity; 312-Accommodation part; 3121-Groove; 3122-Platform; 40-Second ventilation channel; 50-Conductive connector; 60-Intermediate connector; 70-External connector; 71-Quick plug; 72-Cable; 73-End connector; 80-Quick-change nut. Detailed Implementation

[0042] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0043] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0044] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified, where two or more includes two.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; 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.

[0046] The following detailed description is provided in conjunction with specific accompanying drawings and embodiments:

[0047] Please refer to the following: Figures 1 to 8 This application provides a battery pack, which includes a frame 20, a protective plate 30, and a plurality of individual batteries 10.

[0048] Specifically, multiple individual cells 10 are spaced apart along the X-axis. Each individual cell 10 extends along the Y-axis, with the Y-axis parallel to the length direction of the individual cell 10, the X-axis parallel to the thickness direction of the individual cell 10, and the Z-axis parallel to the width direction of the individual cell 10.

[0049] The frame 20 includes two end plates 21, which are spaced apart along the Y-axis and respectively located at opposite ends of each individual battery 10 along the Y-axis. It can be understood that if multiple individual batteries 10 are disposed between the two end plates 21, then the multiple individual batteries 10 can be protected by the two end plates 21. Each end plate 21 extends along the X-axis, and at least one end plate 21 has multiple first ventilation channels 211 passing through it. The multiple first ventilation channels 211 on each end plate 21 are spaced apart along the X-axis.

[0050] A protective plate 30 is disposed between two end plates 21 and located on one side of each individual battery cell 10 along the Z-axis. Understandably, since each individual battery cell 10 is disposed on one side of the protective plate 30 along the Z-axis, each individual battery cell 10 can be protected by the protective plate 30. When the battery pack is in normal use, the protective plate 30 can be located at the bottom of each individual battery cell 10, allowing each individual battery cell 10 to be supported on the protective plate 30. The protective plate 30 has multiple generally concave receiving portions 312 and multiple generally convex partition portions 311 formed along the Z-axis. Understandably, the protective plate 30 has multiple receiving portions 312 recessed along one side of the Z-axis and multiple partition portions 311 protruding along the Z-axis. Each receiving portion 312 and each partition portion 311 extends along the Y-axis and is alternately distributed along the X-axis. The number of individual battery cells 10 is the same as the number of accommodating portions 312, and they are correspondingly arranged. Each individual battery cell 10 is correspondingly arranged on the recessed side of each accommodating portion 312 along the Z-axis. The protruding side of each partition portion 311 along the Z-axis forms a second ventilation channel 40 with the adjacent individual battery cell 10. Based on this, each individual battery cell 10 is arranged adjacent to the corresponding second ventilation channel 40 so that the heat of each individual battery cell 10 can be dissipated through the corresponding second ventilation channel 40. The plurality of first ventilation channels 211 on the end plate 21 are connected to the plurality of second ventilation channels 40 one by one.

[0051] It should be noted that, for ease of explanation, in this embodiment, the side of the protective plate 30 where the individual battery 10 is disposed along the Z-axis is defined as the inner side of the protective plate 30. That is, the side of the protective plate 30 where the partition portion 311 and the accommodating portion 312 are disposed is the inner side of the protective plate 30. Correspondingly, the side of the protective plate 30 opposite to its inner side is defined as the outer side of the protective plate 30. Specifically, the protruding side of the partition portion 311 along the Z-axis and the recessed side of the accommodating portion 312 along the Z-axis are both on the same side as the inner side of the protective plate 30 along the Z-axis. Correspondingly, the recessed side of the partition portion 311 and the protruding side of the accommodating portion 312 are both on the same side as the outer side of the protective plate 30 along the Z-axis, that is, both are on the same side as the side of the protective plate 30 facing away from each individual battery 10.

[0052] It should also be noted that the partitions 311 and the accommodating portions 312 are alternately distributed along the X-axis, and each individual battery 10 is correspondingly disposed on the recessed side of each accommodating portion 312 along the Z-axis. Based on this, the partitions 311 can be located between two adjacent individual batteries 10 to separate the two adjacent individual batteries 10, so that the two adjacent individual batteries 10 are spaced apart. This helps to provide each individual battery 10 with a certain heat dissipation space, thereby achieving a better heat dissipation effect. On the other hand, it also helps to alleviate the short-circuit problem between two adjacent individual batteries 10.

[0053] It should also be noted that the protruding side of each partition 311 along the Z-axis forms a second ventilation channel 40 with the adjacent single cell 10. Understandably, the partition 311 is located between two adjacent single cells 10 along the X-axis, so that the protruding side of the partition 311 along the Z-axis and the two adjacent single cells 10 enclose to form the aforementioned second ventilation channel 40. Alternatively, the partition 311 is located between the adjacent single cell 10 along the X-axis and the other structures of the frame 20 except the end plate 21, so that the protruding side of the partition 311 along the Z-axis and the adjacent single cell 10 and the other structures of the frame 20 except the end plate 21 jointly enclose to form the aforementioned second ventilation channel 40. Based on this, each second ventilation channel 40 is arranged adjacent to the corresponding single cell 10, so that the air in the second ventilation channel 40 can directly exchange heat with one or two adjacent single cells 10.

[0054] It should also be noted that the multiple first ventilation channels 211 on the end plate 21 are connected to the multiple second ventilation channels 40 in a one-to-one correspondence. Based on this, it can be understood that each second ventilation channel 40 extends along the Y-axis, and each first ventilation channel 211 passes through the corresponding end plate 21 along the Y-axis, so that each second ventilation channel 40 and the corresponding first ventilation channel 211 are connected along the Y-axis; in this way, external air can enter the battery pack through the first ventilation channel 211 and the second ventilation channel 40 in sequence to effectively exchange heat with the individual battery cells 10 adjacent to the second ventilation channel 40, thereby achieving heat dissipation of the battery pack.

[0055] In this embodiment, at least one end plate 21 has a first ventilation channel 211. The protective plate 30 has alternating partitions 311 and accommodating portions 312 along the Z-axis. Each individual battery 10 is correspondingly disposed on the recessed side of each accommodating portion 312 along the Z-axis. The protruding side of each partition 311 along the Z-axis and the adjacent individual battery 10 enclose a second ventilation channel 40. The second ventilation channel 40 is adjacent to the corresponding individual battery 10, and the second ventilation channel 40 communicates with the corresponding first ventilation channel 211. It can be understood that the interior of the battery pack is connected to the outside through the second ventilation channel 40 and the first ventilation channel 211 in sequence. Thus, each second ventilation channel 40 and the corresponding first ventilation channel 211 can achieve effective heat exchange between the interior of the battery pack and the outside air. In this way, the heat generated by each individual battery 10 can be dissipated to the outside air through the adjacent second ventilation channel 40 and the corresponding first ventilation channel 211, thereby achieving effective heat dissipation of each individual battery 10. This makes the battery pack have better heat dissipation performance and helps to improve the service life of the battery pack.

[0056] In one embodiment, please refer to [the relevant documentation / reference]. Figures 2 to 8 Both end plates 21 are permeated with the aforementioned first ventilation channel 211, and each of the multiple first ventilation channels 211 on each end plate 21 is connected to multiple second ventilation channels 40 in a one-to-one correspondence.

[0057] Based on this, each second ventilation channel 40 communicates with the corresponding first ventilation channel 211 on the two end plates 21, and together they penetrate the battery pack along the Y-axis. Specifically, one second ventilation channel 40 and the corresponding first ventilation channel 211 on the two end plates 21 penetrate the battery pack along the Y-axis, forming a through channel within the battery pack. Therefore, the battery pack has multiple through channels penetrating the battery pack along the Y-axis. This arrangement allows airflow to circulate between the second ventilation channels 40, the corresponding first ventilation channels 211 on the two end plates 21, and the outside environment, achieving effective heat exchange between the external airflow and the individual battery cells 10 inside the battery pack. This helps improve the airflow circulation efficiency, thereby improving the heat dissipation performance of the battery pack.

[0058] It should be noted that the second ventilation channel 40 and the two corresponding first ventilation channels 211 extend through the battery pack along the Y-axis to form a through channel for the battery pack. Specifically, this means that the second ventilation channel 40 and the two corresponding first ventilation channels 211 are interconnected, allowing external air to enter the second ventilation channel 40 through one of the first ventilation channels 211 and then exit to the outside through the other first ventilation channel 211, thus achieving approximate airflow along the Y-axis. This does not mean that the cross-sectional dimensions of the second ventilation channel 40 and the two first ventilation channels 211 are the same. In fact, depending on the actual design requirements... The cross-sectional dimension of the first ventilation channel 211 can be larger or smaller than the cross-sectional dimension of the second ventilation channel 40. Furthermore, the cross-sectional dimensions of the two first ventilation channels 211 connected by the second ventilation channel 40 can be the same or different. Moreover, depending on actual usage requirements, the cross-sections of both the first ventilation channel 211 and the second ventilation channel 40 can be circular, elliptical, square, polygonal, etc., and the cross-sections of the first ventilation channel 211 and the second ventilation channel 40 can be the same or different. In fact, the cross-sectional shapes of each first ventilation channel 211 can be the same or different, and the cross-sectional shapes of each second ventilation channel 40 can be the same or different. Here, the cross-section refers to the cross-section of the first ventilation channel 211 and the second ventilation channel 40 perpendicular to the Y-axis.

[0059] In one embodiment, please refer to [the relevant documentation / reference]. Figures 5 to 10 A cavity 201 is formed inside the end plate 21. Multiple first ventilation holes 2111 and multiple second ventilation holes 2112 are respectively opened on the opposite side walls of the cavity 201 along the Y-axis. The first ventilation channel 211 includes at least one first ventilation hole 2111 and at least one second ventilation hole 2112. The second ventilation channel 40 communicates with the first ventilation hole 2111 of the corresponding first ventilation channel 211. Any first ventilation hole 2111 is connected to any second ventilation hole 2112 through the cavity 201. It is understood that the cavity 201 has a plurality of first ventilation holes 2111 spaced apart along the X-axis on one side wall along the Y-axis, and a plurality of second ventilation holes 2112 spaced apart along the X-axis on the other side wall along the Y-axis. The cavity 201 achieves a connection between any first ventilation hole 2111 and any second ventilation hole 2112. In this way, each second ventilation channel 40 can be connected to the cavity 201 through the corresponding connected first ventilation hole 2111, and thus connected to any second ventilation hole 2112 through the cavity 201. The first ventilation hole 2111 is opened on the side wall of the cavity 201 along the Y-axis close to the single cell 10, and the second ventilation hole 2112 is opened on the side wall of the cavity 201 along the Y-axis away from the single cell 10.

[0060] With this configuration, each second ventilation channel 40 can be connected to the outside through the first ventilation hole 2111 of the corresponding first ventilation channel 211 and any second ventilation hole 2112 on the end plate 21. Compared with the above embodiment, this helps to further improve the efficiency of airflow circulation and heat exchange between the inside and outside of the battery pack, thereby helping to further improve the heat dissipation performance of the battery pack and thus further improve the service life of the battery pack. In addition, while the end plate 21 provides the battery pack with a certain structural strength, the design of the cavity 201 inside the end plate 21 also gives the end plate 21 the advantage of being lightweight, which helps to enable the battery pack to have better energy density.

[0061] It should be noted that the first ventilation channel 211 includes at least one first ventilation hole 2111 and at least one second ventilation hole 2112, and the first ventilation hole 2111 of the first ventilation channel 211 communicates with the corresponding second ventilation channel 40. This means that:

[0062] In one embodiment, please refer to the following: Figure 6 and Figure 10 The number of first ventilation holes 2111, second ventilation holes 2112, and second ventilation channels 40 on the end plate 21 is the same. Each first ventilation hole 2111 and each second ventilation channel 40 are directly opposite each other along the Y-axis, and each first ventilation hole 2111 and each second ventilation hole 2112 are directly opposite each other along the Y-axis. Thus, each first ventilation channel 211 includes one first ventilation hole 2111 and one second ventilation hole 2112. This arrangement helps to maximize the volume of each first ventilation channel 211, thereby helping to improve the heat exchange efficiency between the inside and outside of the battery pack, and thus helping to improve the heat dissipation effect of the battery pack.

[0063] Of course, in other alternative embodiments, depending on the actual design requirements, the number of first ventilation holes 2111 on the end plate 21 may be greater than the number of second ventilation channels 40, and the number of second ventilation holes 2112 on the end plate 21 may also be greater than the number of second ventilation channels 40, and the number of second ventilation holes 2112 and first ventilation holes 2111 may be the same or different. Based on this, the number of first ventilation holes 2111 in the first ventilation channel 211 can be set to at least two. That is, the first ventilation channel 211 consists of at least two spaced-apart first ventilation holes 2111 and at least one second ventilation hole 2112. This can be understood as the end of the first ventilation channel 211 along the Y-axis near the second ventilation channel 40 consisting of multiple spaced-apart small holes (first ventilation holes 2111). Alternatively, the number of second ventilation holes 2112 in the first ventilation channel 211 can be set to at least two. That is, the second ventilation holes 2112 in the first ventilation channel 211 consists of at least one first ventilation hole 2111 and at least two spaced-apart second ventilation holes 2112. This can be understood as the end of the first ventilation channel 211 along the Y-axis away from the second ventilation channel 40 consisting of multiple spaced-apart small holes (second ventilation holes 2112). The number of first ventilation holes 2111 and each of the second ventilation holes 2112 on the end plate 21 can be set according to actual usage requirements. Furthermore, the cross-sectional shape of the first ventilation hole 2111 and the second ventilation hole 2112 can be selected as circular, elliptical, square, polygonal, or other shapes; optionally, the shapes of the first ventilation hole 2111 and the second ventilation hole 2112 may be the same or different, and even the sizes of the first ventilation hole 2111 and the second ventilation hole 2112 may be the same or different, the shape and size of each first ventilation hole 2111 may be the same or different, and the shape and size of each second ventilation hole 2112 may be the same or different.

[0064] Please refer to the following: Figure 6 and Figure 10 In this embodiment, based on the design of the cavity 201, each of the first ventilation channels 211 on the end plate 21 is composed of at least one first ventilation hole 2111 and at least one second ventilation hole 2112. Of course, in other optional embodiments, the end plate 21 may be configured such that a portion of it has the cavity 201, and the first ventilation channel 211 at the location where the cavity 201 is located on the end plate 21 is composed of the first ventilation hole 2111 and the second ventilation hole 2112. The first ventilation channel 211 at the location where the cavity 201 is not located on the end plate 21 may be configured as a long strip groove running through the end plate 21 along the Y-axis.

[0065] Optionally, at least one end of the end plate 21 along the X-axis has an opening, which is the opening of the cavity 201. Based on this, when the heat generated by the single battery cell 10 is dissipated into the cavity 201 of the end plate 21 through the second ventilation channel 40 and the corresponding first ventilation hole 2111 in sequence, it can not only be dissipated directly to the battery pack through the second ventilation hole 2112 on the end plate 21, but also be dissipated to the outside through the opening at the end of the end plate 21, which helps to improve the heat dissipation effect of the battery pack.

[0066] In one embodiment, please refer to [the relevant documentation / reference]. Figures 4 to 8 , Figure 11 and Figure 12 Each partition 311 has a recess 3111 formed on the side facing away from the second ventilation channel 40, and the recess 3111 extends along the Y-axis. Understandably, the second ventilation channel 40 and the recess 3111 are located on opposite sides of the partition 311 along the Z-axis. The second ventilation channel 40 and the recess 3111 on opposite sides of the partition 311 along the Z-axis are directly opposite to and communicate with the corresponding first ventilation channel 211 along the Y-axis. Specifically, the second ventilation channel 40 and the recess 3111 on opposite sides of the partition 311 along the Z-axis are directly opposite to and communicate with the corresponding first ventilation hole 2111 along the Y-axis.

[0067] With this configuration, the protective plate 30 has multiple recesses 3111 spaced apart along the X-axis on the outer side of the Z-axis. Each recess 3111 is exposed on the outer side of the protective plate 30 and is connected to each of the first ventilation channels 211. During the heat dissipation process of the battery pack, the heat generated by the individual battery 10 is dissipated into the cavity 201 through the adjacent second ventilation channel 40 and the first ventilation hole 2111 in sequence. In addition to being able to dissipate directly to the battery pack through the second ventilation hole 2112, it can also be dissipated to the recesses 3111 through the first ventilation hole 2111, thereby dissipating from the outer side of the protective plate 30 to the outside. This gives the battery pack at least two heat dissipation paths, which helps to further improve the heat dissipation effect of the battery pack and thus improve the service life of the battery pack.

[0068] It should be further explained that the side wall of the end plate 21 with the first ventilation hole 2111 can abut against one end of the partition 311 along the Y-axis. With this arrangement, the heat in the second ventilation channel 40 needs to first enter the cavity 201 through the corresponding first ventilation hole 2111, and then enter the recess 3111 from the cavity 201 through the first ventilation hole 2111 or be discharged to the outside through the second ventilation hole 2112. When the side wall of the end plate 21 with the first ventilation hole 2111 does not abut against the partition 311, it indicates that there is a certain gap between the second ventilation channel 40 and the first ventilation hole 2111. In this way, the heat of the second ventilation channel 40 can directly enter the recess 3111 through this gap, or it can enter the first ventilation hole 2111 through the gap.

[0069] In one embodiment, please refer to the following: Figures 4 to 6 The accommodating portion 312 has a recessed groove 3121 along the Z-axis and platforms 3122 disposed on opposite sides of the groove 3121 along the X-axis. The platforms 3122 of the accommodating portion 312 are connected to the adjacent partition portion 311. Each individual battery cell 10 is supported on the two platforms 3122 of the corresponding accommodating portion 312 and is limited to the two partition portions 311 along the X-axis. With this arrangement, on the one hand, the platforms 3122 provide support for each individual battery cell 10 along the Z-axis, and on the other hand, the partition portions 311 limit the position of each individual battery cell 10 along the X-axis. This limitation of the individual battery cells 10 helps to improve the overall structural integrity and stability of the battery pack.

[0070] In one embodiment, please refer to [the relevant documentation / reference]. Figures 4 to 8 In the section perpendicular to the Y-axis, the protective plate 30 has an arc-shaped profile for the partition portion 311 and / or the receiving portion 312.

[0071] It should be noted that the outline of the partition 311 is arc-shaped. Understandably, both the protruding side and the concave side of the partition 311 are arc-shaped. Based on this, since the protruding side of the partition 311 is arc-shaped, the cavity 3111 formed on the concave side of the partition 311 is an arc-shaped groove. The cavity 3111 has a large volume and can communicate with the first ventilation channel 211, thereby helping to improve the heat dissipation effect of the battery pack.

[0072] It should also be noted that the contour of the accommodating portion 312 is arc-shaped. Understandably, both the concave and convex contours of the accommodating portion 312 are arc-shaped. Based on this, the convex contour of the accommodating portion 312 is arc-shaped, giving it better impact resistance and helping to mitigate the problem of the individual battery cell 10 being damaged by impacts or knocks. Specifically, the groove 3121 makes the concave contour of the accommodating portion 312 arc-shaped.

[0073] It should also be noted that the outlines of the partition 311 and the accommodating part 312 are both arc-shaped, which gives the protective plate 30 better structural strength. Thus, each individual battery cell 10 can obtain better protection through the protective plate 30. On the one hand, this gives the battery pack better structural strength and stability, and on the other hand, it gives the protective plate 30 better anti-collision effect, thereby achieving anti-collision protection for each individual battery cell 10.

[0074] In one embodiment, please refer to [the relevant documentation / reference]. Figures 1 to 3 and Figure 13The frame 20 also includes at least two longitudinal plates 22. Specifically, the at least two longitudinal plates 22 are spaced apart along the X-axis, and each longitudinal plate 22 extends along the Y-axis. The opposite ends of each longitudinal plate 22 along the Y-axis are respectively connected to two end plates 21. A plurality of individual cells 10 form at least one battery pack, and each battery pack is located between two adjacent longitudinal plates 22. Wherein, if the partition 311 is located between two adjacent individual cells 10 along the X-axis, the protruding side of the partition 311 along the Z-axis forms a second ventilation channel 40 with the two adjacent individual cells 10, and / or, if the partition 311 is located between an adjacent individual cell 10 and a longitudinal plate 22 along the X-axis, the protruding side of the partition 311 along the Z-axis forms a second ventilation channel 40 with the adjacent individual cell 10 and a longitudinal plate 22.

[0075] With this configuration, the partition 311 can separate two adjacent individual batteries 10, and also separate adjacent individual batteries 10 and the longitudinal plate 22, allowing the individual batteries 10 and the longitudinal plate 22 to be spaced apart. This helps to provide individual batteries 10 with a certain amount of heat dissipation space, thus achieving better heat dissipation. On the other hand, it can also enhance the buffering effect of the frame 20. Furthermore, the partition 311 adjacent to the longitudinal plate 22 separates adjacent individual batteries 10 and the longitudinal plate 22, and together with the adjacent individual batteries 10 and the longitudinal plate 22, forms a second ventilation channel 40. The partition 311 not adjacent to the longitudinal plate 22 separates two adjacent individual batteries 10, and together with the two adjacent individual batteries 10, forms the aforementioned second ventilation channel 40. Thus, each individual battery 10 has a second ventilation channel 40 on both sides along the X-axis, and the heat generated by each individual battery 10 can be dissipated through the second ventilation channels 40 on both sides, thereby further improving the heat dissipation effect of the battery pack.

[0076] In one embodiment, please refer to [the relevant documentation / reference]. Figures 1 to 3 and Figure 13 The frame 20 also includes at least one first beam structure 23. The first beam structure 23 is disposed on the side of the single cell 10 where the protective plate 30 is provided. The extension direction of the first beam structure 23 and the extension direction of the longitudinal plate 22 form an angle greater than 0°, and the first beam structure 23 is connected to at least one longitudinal plate 22. The protective plate 30 is disposed to avoid the longitudinal plate 22 and the first beam structure 23.

[0077] It should be noted that the two end plates 21 are spaced apart along the Y-axis, and at least two longitudinal plates 22 are spaced apart along the X-axis. The opposite ends of each longitudinal plate 22 are connected to the end plates 21, so that the end plates 21 and longitudinal plates 22 are arranged in a crisscross pattern. The first beam structure 23 is set on the side of each individual battery 10 with the protective plate 30. The first beam structure 23 is connected to at least one longitudinal plate 22. The extension direction of the first beam structure 23 and the extension direction of the longitudinal plate 22 form an angle greater than 0°, so that the first beam structure 23 and longitudinal plates 22 are arranged in a crisscross pattern. In this way, the frame 20 forms an integral frame structure through the end plates 21, longitudinal plates 22 and the first beam structure 23, so that the frame 20 has a certain structural strength. Each battery pack is set between two adjacent longitudinal plates 22. The arrangement of the end plates 21, longitudinal plates 22 and the first beam structure 23 enables the frame 20 to provide strong strength protection for each individual battery 10, so that the battery pack has strong structural strength.

[0078] It should also be noted that the first beam structure 23 is disposed on the side of each individual battery 10 with the protective plate 30. The extension direction of the first beam structure 23 and the extension direction of the longitudinal plate 22 form an angle greater than 0°. Each individual battery 10 extends along the Y-axis. Based on this, each individual battery 10 and the end plate 21 are arranged in a crisscross pattern. Each individual battery 10 is disposed between two end plates 21. Each end plate 21 also extends along the X-axis. Based on this, each individual battery 10 and the first beam structure 23 are also arranged in a crisscross pattern. This arrangement makes each individual battery 10 equivalent to the longitudinal beam of the battery pack, thereby giving the battery pack a stronger structural strength.

[0079] It should also be noted here that, as Figure 2 and Figure 13 As shown, the first beam structure 23 extends along the X-axis and is connected to each longitudinal plate 22, making the first beam structure 23 perpendicular to both the longitudinal plate 22 and the individual battery cell 10. This helps to improve the overall structural strength of the battery pack. Optionally, at least two first beam structures 23 are provided, with the two first beam structures 23 spaced apart along the Y-axis, which helps to further improve the structural strength of the battery pack. Of course, in other optional embodiments, the first beam structure 23 can form an angle greater than 0° with the Y-axis and X-axis, respectively. The specific setting can be determined according to actual needs. Optionally, at least two first beam structures 23 can be provided, and any two first beam structures 23 can be parallel to each other or form an angle greater than 0°. Furthermore, the two first beam structures 23 can be connected to each other or cross each other in an "X" shape. Such a setting can help to further improve the structural strength of the frame 20, thereby further improving the structural strength of the battery pack.

[0080] Alternatively, please refer to Figure 3The protective plate 30 has at least one clearance space 32, which divides the protective plate 30 into at least two sub-plates 31. The protective plate 30 avoids the longitudinal plate 22 and the first beam structure 23 through the clearance space 32, so that each sub-plate 31 is disposed on one side of the corresponding portion of the single cell 10 along the Z-axis. This arrangement helps to distribute the protective plate 30, the longitudinal plate 22, and the first beam structure 23, thereby simplifying the structure of the battery pack. Each sub-plate 31 has the aforementioned plurality of partition portions 311 and plurality of receiving portions 312 on the side of the single cell 10 along the Z-axis.

[0081] It should be noted that at least two vertical plates 22 are spaced apart along the X-axis, and the accommodating portions 312 and the partition portions 311 are alternately distributed, with each battery pack located between two adjacent vertical plates 22. Based on this, at least one partition portion 311 can be located between adjacent individual cells 10 and vertical plates 22, that is, at least one second ventilation channel 40 can be located between adjacent individual cells 10 and vertical plates 22. Furthermore, when there are at least three vertical plates 22, at least one vertical plate 22 is located between two adjacent battery packs. In this case, in order for the protective plate 30 to avoid the vertical plate 22 located between two adjacent battery packs through the clearance space 32, the clearance space can be opened on the protective plate 30 at the position where the accommodating portion 312 should be located. With this arrangement, there is a partition portion 311 between the vertical plate 22 and any adjacent individual cell 10, and there is also a second ventilation channel 40 between the vertical plate 22 and the adjacent individual cell 10, which helps to improve the heat dissipation performance of the battery pack.

[0082] Optionally, the longitudinal plate 22 is configured as a hollow frame structure. This configuration not only gives the longitudinal plate 22 strong structural strength but also the advantage of light weight, thus enabling the battery pack to have both strong structural strength and good energy density.

[0083] Optionally, such as Figure 16 As shown, the first beam structure 23 has a U-shaped structure on the cross section perpendicular to the X-axis. This structure not only provides the first beam structure 23 with strong structural strength but also has the advantage of being lightweight. As a result, the battery pack has both strong structural strength and good energy density.

[0084] Optionally, the longitudinal plate 22 has quick-change nuts 80, which facilitates the quick assembly and disassembly of the battery pack frame 20 and external structure, thus enhancing the ease of use of the battery pack. The external structure can be the vehicle body or a mounting device used to secure the battery pack.

[0085] In one embodiment, please refer to [the relevant documentation / reference]. Figure 14 and Figure 15Each individual battery cell 10 includes a battery casing 11 and a cell assembly 12. The cell assembly 12 is disposed within the battery casing 11, which is connected between two end plates 21. Each battery casing 11 is correspondingly disposed on the recessed side of each receiving portion 312 along the Z-axis. This arrangement, on the one hand, allows the cell assembly 12 to receive better protection through the battery casing 11; on the other hand, the staggered arrangement between the battery casing 11 and the end plates 21, and between the battery casing 11 and the first beam structure 23, helps to improve the structural strength of the frame 20, thereby further improving the structural strength of the battery pack.

[0086] It should be noted that the battery cell assembly 12 includes at least one individual battery cell 121, and each individual battery cell 121 has a tab 122 at at least one end along the Y-axis. Optionally, as Figure 14 As shown, the cell group 12 includes at least two individual cells 121, which are distributed sequentially along the Y-axis. Two adjacent individual cells 121 along the Y-axis are connected in series or in parallel through tabs 122, so that each cell group 12 is a long strip-shaped cell structure.

[0087] In one embodiment, please refer to [the relevant documentation / reference]. Figure 1 and Figure 2 The frame 20 also includes a second beam structure 24, which is disposed on the side of each individual battery cell 10 facing away from the protective plate 30 and connected to each longitudinal plate 22. This arrangement causes the second beam structure 24 and the longitudinal plates 22 to be staggered, and the second beam structure 24 and the protective plate 30 are respectively disposed on opposite sides of each individual battery cell 10 along the Z-axis, enabling the individual battery cell 10 to be positioned along the Z-axis, thus helping to improve the overall structural strength and stability of the battery pack.

[0088] Optionally, such as Figure 1 and Figure 2 As shown, the second beam structure 24 extends along the X-axis.

[0089] Optionally, the second beam structure 24 is U-shaped in the cross section perpendicular to the X-axis. This design not only gives the second beam structure 24 a certain structural strength but also the advantage of light weight. Thus, the battery pack has both strong structural strength and good energy density.

[0090] In one embodiment, please refer to [the relevant documentation / reference]. Figure 15 and Figure 16 Multiple individual cells 10 are connected in series and / or in parallel through multiple conductive connectors 50, wherein each conductive connector 50 is connected to two adjacent individual cells 10.

[0091] The second beam structure 24 has multiple connecting holes 2421 spaced apart along the X-axis, each corresponding to a single battery cell 10. Each conductive connector 50 passes through two adjacent connecting holes 2421, with its opposite ends connected to two adjacent single battery cells 10. This arrangement allows for series and / or parallel connection of multiple single battery cells 10. Furthermore, the connection between the connecting strip 242 and each individual battery cell 121 through the connecting holes 2421 helps improve the overall structural integrity and stability of the battery pack.

[0092] Optionally, such as Figure 2 and Figure 14 As shown, the second beam structure 24 includes a body portion 241 and a connecting strip 242 disposed on the body portion 241. Both the body portion 241 and the connecting strip 242 extend along the X-axis, and the connecting strip 242 is disposed on the side of the body portion 241 along the Z-axis close to the individual battery cell 10. It can be understood that the body portion 241, the connecting strip 242, and the individual battery cell 10 are distributed sequentially along the Z-axis. This arrangement not only improves the overall structural strength of the battery pack by increasing the second beam structure 24, but also allows the conductive connector 50 to connect the second beam structure 24 and the individual battery cell 10, thus contributing to improved structural integrity and stability of the battery pack.

[0093] In one embodiment, please refer to [the relevant documentation / reference]. Figures 14 to 17 Each individual battery cell 10 includes a cell assembly 12 and end caps 13 disposed at opposite ends of the cell assembly 12. The tabs 122 at opposite ends of the cell assembly 12 are inserted into the corresponding end caps 13. Conductive connectors 50 are inserted between the corresponding tabs 122 and the inner walls of the end caps 13. This arrangement allows the corresponding ends of the conductive connectors 50 to be inserted between the corresponding tabs 122 and the inner walls of the end caps 13 of two adjacent individual battery cells 10, thus achieving an electrical connection between adjacent individual battery cells 10. This simplifies the series and / or parallel connection process between multiple individual battery cells 10.

[0094] Optionally, the conductive connector 50 is configured as a U-shaped structure, with its two ends inserted into two adjacent connection holes 2421 respectively. This allows each end of the conductive connector 50 to be sequentially inserted between the corresponding connection holes 2421, the corresponding tabs 122 of the corresponding single cell 10, and the inner wall of the end cap 13, thereby achieving electrical connection between the conductive connector 50 and the two adjacent single cells 10, and also achieving connection between the two single cells 10 and the connecting strip 242. This simplifies the battery pack assembly process. Furthermore, the design of the conductive connector 50 makes the entire battery pack structure very simple and reduces manufacturing costs.

[0095] Optionally, please refer to the following as well. Figure 1 and Figure 2 The battery pack consists of at least two battery packs spaced apart along the X-axis. Adjacent battery packs are electrically connected via an intermediate connector 60. Specifically, the intermediate connector 60 has a U-shaped structure, with its two ends passing through two corresponding connection holes 2421 on the connecting strip 242, and being inserted into two adjacent individual battery cells 10, thereby achieving electrical connection between adjacent battery packs. The connection method between the intermediate connector 60 and the two adjacent individual battery cells 10 can be the same as the connection method between the conductive connector 50 and the two adjacent individual battery cells 10, and will not be elaborated further here.

[0096] Optionally, the battery pack also includes an external connector 70, which includes a quick connector 71 and two cables 72 disposed on the quick connector 71. The ends of the two cables 72 away from the quick connector 71 are respectively inserted into the positive and negative terminals of the whole composed of multiple individual batteries 10. In this way, external devices can obtain power from the battery pack through the quick connector 71, which helps to improve the ease of use of the battery pack.

[0097] Optionally, each cable 72 has an end connector 73 at the end away from the quick plug 71. The connection method between the end connector 73 and the individual battery 10 can be the same as the connection method between the conductive connector 50 and the individual battery 10, which will not be described in detail here.

[0098] In this embodiment, by using the frame 20 and conductive connector 50, the assembly of each individual battery cell 10 within the frame 20 and the series and / or parallel connection between each individual battery cell 10 are realized. This makes the structure of the entire battery pack very simple, easy to implement, and low in cost.

[0099] Based on the above concept, this application also provides a vehicle including a battery pack. The battery pack in this embodiment is the same as the battery in the previous embodiment; please refer to the relevant description of the battery pack in the previous embodiment for details, which will not be repeated here.

[0100] The vehicle provided in this application embodiment, based on the above-described battery pack design, also possesses the advantages of good heat dissipation performance and long service life of the above-described battery pack.

[0101] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack, characterized in that, include: Multiple individual cells, wherein the multiple individual cells are spaced apart along the X-axis; The frame includes two end plates, which are respectively disposed at opposite ends of each individual battery cell along the Y-axis, and at least one end plate has multiple first ventilation channels spaced apart along the X-axis. A protective plate is disposed between the two end plates and located on one side of each individual battery cell along the Z-axis. The protective plate has a plurality of generally concave receiving portions and a plurality of generally convex partition portions formed along the Z-axis. Each receiving portion and each partition portion extends along the Y-axis and is alternately distributed along the X-axis. Each individual battery cell is correspondingly disposed within each receiving portion. The convex side of each partition portion along the Z-axis forms a second ventilation channel with the adjacent individual battery cell. The plurality of first ventilation channels on the end plates are connected to the plurality of second ventilation channels in a one-to-one correspondence. Each of the partitions has a cavity formed on the side facing away from the second ventilation channel. The second ventilation channel and the cavity on opposite sides of the partition along the Z-axis are connected to the corresponding first ventilation channel along the Y-axis.

2. The battery pack as described in claim 1, characterized in that, Both end plates are permeated by the first ventilation channel, and the multiple first ventilation channels on each end plate are connected to the multiple second ventilation channels in a one-to-one correspondence.

3. The battery pack as described in claim 1, characterized in that, A cavity is formed inside the end plate. Multiple first ventilation holes and multiple second ventilation holes are respectively opened on the opposite side walls of the cavity along the Y-axis. The first ventilation channel includes at least one first ventilation hole and at least one second ventilation hole. The second ventilation channel communicates with the first ventilation hole of the corresponding first ventilation channel. Any first ventilation hole is connected to any second ventilation hole through the cavity.

4. The battery pack as described in claim 1, characterized in that, The recessed side of the receiving portion is provided with a groove and a platform disposed on opposite sides of the groove along the X-axis. The partition is connected to the platform of the adjacent receiving portion. The single battery cell is supported on the two platforms of the corresponding receiving portion and is located between the two partitions along the X-axis.

5. The battery pack according to any one of claims 1-4, characterized in that, The framework also includes: At least two longitudinal plates are spaced apart along the X-axis, and the opposite ends of each longitudinal plate are respectively connected to two end plates; a plurality of individual cells form at least one battery pack, and each battery pack is located between two adjacent longitudinal plates; the protruding side of the partition forms a second ventilation channel with two adjacent individual cells, and / or the protruding side of the partition forms a second ventilation channel with adjacent individual cells and the longitudinal plates; At least one first beam structure is disposed on the side of the single cell where the protective plate is provided, and is connected to at least one of the longitudinal plates. The extension direction of the first beam structure and the extension direction of the longitudinal plate form an angle greater than 0°. The protective plate is disposed to avoid the longitudinal plate and the first beam structure.

6. The battery pack as described in claim 5, characterized in that, Each of the individual batteries includes a battery case connected between the two end plates and a cell assembly disposed within the battery case, with each battery case correspondingly disposed on the recessed side of each accommodating portion along the Z-axis.

7. The battery pack as described in claim 5, characterized in that, The frame also includes a second beam structure, which is disposed on the side of each individual battery cell facing away from the protective plate and connected to each of the longitudinal plates.

8. The battery pack as described in claim 7, characterized in that, Multiple individual cells are connected in series and / or in parallel through multiple conductive connectors; the second beam structure has multiple connecting holes spaced apart along the X-axis, each connecting hole corresponding to each individual cell; each conductive connector passes through two adjacent connecting holes, and the opposite ends of each conductive connector are respectively connected to two adjacent individual cells.

9. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 1-8.

Images