Battery assembly

Abstract

The utility model discloses a battery assembly, which comprises a shell, a battery module, a battery module and a battery module, the shell is internally provided with a mounting cavity, and the inner wall surface of the mounting cavity is provided with a positioning part; the battery cell module is arranged in the mounting cavity, and at least part of the battery cell module is attached to the positioning part so as to limit the battery cell module; the battery cell module comprises a plurality of battery cell units and conducting strips, and any two adjacent battery cell units are connected through the conducting strips; and the protection plate is arranged above the battery cell module and is attached to the battery cell module, and the protection plate is connected with the shell. According to the battery assembly, the problem that the energy density of the battery is reduced due to the fact that the battery cell bracket occupies the mounting space in the battery assembly in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery structure design, and in particular, to a battery assembly. Background Art

[0002] At present, power batteries are generally composed of multiple cells connected in series or in parallel to output current together for power supply. The number of cells is at least two. Therefore, it is necessary to first fix the multiple cells with a bracket, install the nickel sheet on the bracket and send it into the jig for welding, and then load them into the battery shell together.

[0003] However, the battery cell holder is usually formed by injection molding, and the cost of opening the mold for plastic parts is relatively high. Moreover, after the battery cell holder is installed in the battery casing, it occupies the internal space of the battery casing, thereby reducing the energy density of the battery cell. Utility Model Content

[0004] The main purpose of the present application is to provide a battery assembly to solve the problem in the prior art of battery assemblies in which the energy density of the battery is reduced due to the cell holder occupying the installation space.

[0005] According to one aspect of the present application, a battery assembly is provided, comprising: a shell having an installation cavity therein, and a positioning portion is provided on the inner wall surface of the installation cavity; a battery cell module is arranged in the installation cavity, and at least a part of the battery cell module is fitted with the positioning portion to limit the battery cell module; the battery cell module comprises a plurality of battery cell units and a conductive sheet, and any two adjacent battery cell units are connected by the conductive sheet; a protective plate is arranged above the battery cell module and fitted with the battery cell module, and the protective plate is connected to the shell.

[0006] Furthermore, the conductive sheet includes a positive conductive sheet and a negative conductive sheet, and the positive electrodes of any two adjacent battery cell units are connected via the positive conductive sheet; the negative electrodes of any two adjacent battery cell units are connected via the negative conductive sheet.

[0007] Furthermore, the battery assembly also includes: an insulating adhesive layer, which is arranged between the battery cell module and the protection plate, and two sides of the insulating adhesive layer are respectively bonded to the battery cell module and the protection plate to connect the battery cell module and the protection plate.

[0008] Furthermore, a through hole is provided on the protection plate; a protruding contact is provided on the conductive sheet, an extension direction of the protruding contact and an extension direction of the conductive sheet form an angle, and at least a portion of the protruding contact passes through the through hole and is electrically connected to the protection plate.

[0009] Furthermore, a mounting hole is provided on the protective plate, and the positioning part includes: a positioning column, which is arranged in the shell, and a fixing hole is provided in the positioning column, and the mounting hole is opposite to the fixing hole, and fasteners are sequentially penetrated into the mounting hole and the fixing hole to connect the protective plate to the shell; wherein, there are multiple mounting holes, and the multiple mounting holes are spaced apart along the circumferential direction of the protective plate; there are multiple positioning columns, and the multiple positioning columns are arranged one-to-one correspondingly to the multiple mounting holes.

[0010] Furthermore, the battery cell module includes a first side surface, at least a portion of the first side surface is located on the conductive sheet, and the positioning portion also includes: a first positioning rib, which is arranged on the bottom wall surface of the mounting cavity, the first positioning rib protrudes relative to the bottom wall surface, the first positioning rib extends along the length direction of the shell, and the first positioning rib is connected to the first side wall surface of the mounting cavity by a first plate rib; a first positioning end surface is arranged on the first positioning rib, and at least a portion of the first side surface is in contact with the first positioning end surface; wherein the first positioning rib can be elastically arranged.

[0011] Furthermore, there are a plurality of first positioning ribs, and the plurality of first positioning ribs are spaced apart along the length direction of the shell, and at least a portion of the first side surface is respectively fitted with a first positioning end surface of each first positioning rib.

[0012] Furthermore, the battery cell module also includes a second side surface, at least a portion of the second side surface is arranged on the battery cell unit, and the positioning portion also includes: a second positioning rib, which is arranged on the bottom wall surface of the installation cavity, the second positioning rib protrudes relative to the bottom wall surface, the second positioning rib extends along the width direction of the shell, and the second positioning rib is connected to the second side wall surface of the installation cavity by a second plate rib; a second positioning end surface is arranged on the second positioning rib, and at least a portion of the second side surface is in contact with the second positioning end surface; wherein the second positioning rib can be elastically arranged.

[0013] Furthermore, there are a plurality of second positioning ribs, and the plurality of second positioning ribs are arranged at intervals along the width direction of the shell, and at least a portion of the second side surface is respectively fitted with the second positioning end surface of each second positioning rib.

[0014] Furthermore, the second side surface is an arcuate surface, and the positioning portion also includes: a third positioning rib, the third positioning rib is respectively connected to the bottom wall surface and the second positioning rib, a third positioning end face is arranged on the third positioning rib, the third positioning end face is connected to the second positioning end face, at least a portion of the third positioning end face is an arcuate surface, and at least a portion of the second side surface is fitted with the third positioning end face; wherein, a plurality of third positioning ribs are respectively arranged on each second positioning rib, and the plurality of third positioning ribs are arranged at intervals along the extension direction of the second positioning rib.

[0015] Compared with the prior art, the technical solution of this application has at least the following technical effects:

[0016] The battery assembly provided by the present application includes a shell, a battery cell module and a protection plate. The shell has an installation cavity, and a positioning portion is arranged on the inner wall surface of the installation cavity. The battery cell module is installed in the installation cavity and fits with the positioning portion. The battery cell module is limited by the positioning portion. The battery cell module includes multiple battery cell units and conductive sheets. Any two adjacent battery cell units are connected by conductive sheets. The protection plate is arranged above the battery cell module and fits with the battery cell module. The protection plate is connected to the shell. In this way, the battery cell units are connected together by replacing the battery cell bracket with the conductive sheet to keep the battery cell units fixed. At the same time, the battery cell module is limited by the positioning portion. After the protection plate is connected to the shell, the freedom of the battery cell module is limited. Therefore, the positioning portion and the protection plate cooperate with each other to prevent the battery cell module from moving in the installation cavity. In addition, the conductive sheet is directly connected to the battery cell unit, which simplifies the process operation and work flow, facilitates product production, reduces battery costs, and can maximize the use of the volume of the battery cell unit to improve the energy density of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 An exploded view of the structure of the battery assembly disclosed in this application;

[0019] Figure 2 A schematic diagram of the structure of the protection plate of the battery assembly disclosed in this application;

[0020] Figure 3 A schematic structural diagram of a housing of a battery assembly disclosed in this application;

[0021] Figure 4 This is a schematic diagram of the installation of the battery cell module in the battery assembly disclosed in this application;

[0022] Figure 5 This is a schematic diagram of the assembly of the battery assembly disclosed in this application.

[0023] The above drawings include the following reference numerals:

[0024] 1. Shell; 10. Installation cavity; 101. Bottom wall; 102. First side wall; 103. Second side wall; 11. Positioning portion; 110. Positioning column; 1101. Fixing hole; 111. First positioning rib; 1110. First positioning end face; 112. Second positioning rib; 1120. Second positioning end face; 113. Third positioning rib; 1130. Third positioning end face; 2. Battery module; 20. Battery unit; 21. Conductive sheet; 210. Positive conductive sheet; 211. Negative conductive sheet; 212. Extended contact; 22. First side face; 23. Second side face; 3. Protection plate; 30. Through hole; 31. Installation hole; 4. Insulating rubber layer; 5. Fastener; 6. First plate rib; 7. Second plate rib; 8. Buffer layer; 9. Cover. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] As mentioned in the background technology, in the existing battery pack, taking cylindrical batteries as an example, during the assembly process, multiple cylindrical batteries are installed in a battery holder, and the battery holder assembles the multiple cylindrical batteries into a whole. Then, the nickel sheet is mounted on the holder and placed in a jig for welding. This not only increases the cost of injection molding of the battery holder, but also when the battery holder and the cylindrical battery are placed in the battery shell together, the battery holder occupies a large installation space, which also reduces the energy density of the battery cell. Therefore, in order to solve the above technical problems, the present application provides a battery assembly, including a shell 1, a battery cell module 2 and a protective plate 3, a positioning portion 11 is provided on the inner wall surface of the installation cavity 10 of the shell 1, the battery cell module 2 is installed in the installation cavity 10, and the battery cell module 2 is positioned by the positioning portion 11, wherein the battery cell module 2 includes multiple batteries The conductive sheet 21 is used to connect the battery cell unit 20 and the conductive sheet 21. Any two adjacent battery cell units 20 are connected through the conductive sheet 21. In this way, the conductive sheet 21 is directly connected to the battery cell unit 20. There is no need to use a battery cell bracket as a supporting carrier for multiple battery cell units 20. The conductive sheet 21 replaces the fixing function of the bracket and simplifies the process. Further, the protection plate 3 is directly attached to the top of the battery cell module 2 to simplify the process operation. The conductive sheet 21 is welded to the battery cell unit 20. The conductive sheet 21 after welding can withstand a large tensile force to fix each battery cell unit 20. In this way, there is no need for a bracket design, and the volume of the battery cell unit 20 can be utilized to the maximum extent, thereby improving the energy density of the battery. At the same time, the positioning portion 11 is used to position the battery cell module 2, which is convenient for the battery cell module 2 to be assembled at a predetermined position and to prevent the battery cell module 2 from moving in the shell 1.

[0029] See also Figures 1 to 5 As shown, the present application provides a battery assembly, including: a shell 1, the shell 1 has an installation cavity 10, and a positioning portion 11 is arranged on the inner wall surface of the installation cavity 10; a battery cell module 2 is arranged in the installation cavity 10, and at least a part of the battery cell module 2 is fitted with the positioning portion 11 to limit the battery cell module 2; the battery cell module 2 includes a plurality of battery cell units 20 and a conductive sheet 21, and any two adjacent battery cell units 20 are connected by the conductive sheet 21; a protection plate 3 is arranged above the battery cell module 2 and fits with the battery cell module 2, and the protection plate 3 is connected to the shell 1.

[0030] According to the battery assembly provided by the present application, it includes a shell 1, a battery cell module 2 and a protection plate 3. The shell 1 has an installation cavity 10, and a positioning portion 11 is provided on the inner wall surface of the installation cavity 10. The battery cell module 2 is installed in the installation cavity 10 and fits with the positioning portion 11. The battery cell module 2 is limited by the positioning portion 11. The battery cell module 2 includes a plurality of battery cell units 20 and a conductive sheet 21. Any two adjacent battery cell units 20 are connected by the conductive sheet 21. The protection plate 3 is arranged above the battery cell module 2 and fits with the battery cell module 2. The protection plate 3 is connected to the shell 1. In this way, the conductive sheet 21 is used instead of the battery holder to connect the battery units 20 together to keep the battery units 20 fixed to each other. At the same time, the positioning part 11 is used to limit the battery module 2 to prevent the battery module 2 from moving in the installation cavity 10. In addition, the conductive sheet 21 is directly connected to the battery unit 20, which simplifies the process operation and work flow, facilitates product production, reduces battery costs, and can maximize the use of the volume of the battery unit 20 to improve the energy density of the battery.

[0031] Specifically, in the actual assembly process, the conductive sheet 21 includes a positive conductive sheet 210 and a negative conductive sheet 211, and the positive electrodes of any two adjacent battery cell units 20 are connected through the positive conductive sheet 210; the negative electrodes of any two adjacent battery cell units 20 are connected through the negative conductive sheet 211. In the embodiment provided in the application, five battery cell units are taken as an example, wherein the positive electrodes of three adjacent battery cell units 20 are connected through a positive conductive sheet 210, and the positive electrodes of the other two adjacent battery cell units 20 are connected through a positive conductive sheet 210, the negative electrodes of two of the three adjacent battery cell units 20 are connected through a negative conductive sheet 211, and the negative electrodes of the other three adjacent battery cell units 20 are connected through a negative conductive sheet 211, so that the series or parallel connection between the battery cell units 20 is realized, and the positive conductive sheet 210 and the negative conductive sheet 211 are used to connect the battery cell units 20 together.

[0032] Furthermore, in order to facilitate the fixing of the protection plate 3, the battery assembly further includes: an insulating adhesive layer 4, which is arranged between the battery module 2 and the protection plate 3, and the two sides of the insulating adhesive layer 4 are respectively attached to the battery module 2 and the protection plate 3 to connect the battery module 2 and the protection plate 3. Preferably, the insulating adhesive layer 4 includes insulating adhesive tape, and the protection plate 3 is attached to the battery module 2 by the insulating adhesive tape, and then electrically connected to the protection plate 3 by the conductive sheet 21.

[0033] Specifically, the protection plate 3 is provided with a through hole 30; the conductive sheet 21 is provided with a protruding contact 212, and the extension direction of the protruding contact 212 and the extension direction of the conductive sheet 21 form an angle, and at least a portion of the protruding contact 212 is electrically connected to the protection plate 3 after passing through the through hole 30. After the conductive sheet 21 is welded to the battery cell unit 20, the protection plate 3 is installed, and the protruding contact 212 is passed through the through hole 30 and then bent, and the protruding contact 212 is welded to the protection plate 3. In this way, the cooperation between the protruding contact 212 and the protection plate 3 can be used to electrically connect the protection plate 3 to the battery cell unit 20, and the positional relationship between the protection plate 3 and the battery cell unit 20 can be positioned when the protection plate 3 is installed, so as to facilitate the subsequent connection of the protection plate 3 with the housing 1.

[0034] In a specific implementation, a mounting hole 31 is provided on the protection plate 3, and the positioning part 11 includes: a positioning column 110, which is provided in the housing 1, and a fixing hole 1101 is provided in the positioning column 110, and the mounting hole 31 is opposite to the fixing hole 1101, and the protection plate 3 is connected to the housing 1 by the fastener 5 which is sequentially penetrated in the mounting hole 31 and the fixing hole 1101; wherein, there are multiple mounting holes 31, and the multiple mounting holes 31 are arranged at intervals along the circumferential direction of the protection plate 3; there are multiple positioning columns 110, and the multiple positioning columns 110 are arranged one-to-one with the multiple mounting holes 31. Preferably, the fastener 5 is a screw, and the protection plate 3 is connected to the housing 1 by a screw, and by providing the fixing hole 1101 in the positioning column 110, the fastener 5 is hidden in the fixing hole 1101 after the fastener 5 is installed, so as to avoid the situation where the fastener 5 is exposed in the installation cavity 10 and interferes with the battery module 2 during the installation process.

[0035] In the embodiment provided in the present application, the battery cell module 2 includes a first side surface 22, at least a portion of the first side surface 22 is located on the conductive sheet 21, and the positioning portion 11 also includes: a first positioning rib 111, which is arranged on the bottom wall surface 101 of the installation cavity 10, the first positioning rib 111 protrudes relative to the bottom wall surface 101, the first positioning rib 111 extends along the length direction of the shell 1, and the first positioning rib 111 is connected to the first side wall surface 102 of the installation cavity 10 by the first plate rib 6; a first positioning end surface 1110 is arranged on the first positioning rib 111, and at least a portion of the first side surface 22 is in contact with the first positioning end surface 1110; wherein the first positioning rib 111 can be elastically arranged. First, through the first positioning end face 1110 of the first positioning rib 111, the first side face 22 is fitted with the first positioning end face 1110 during the installation of the battery module 2, so as to limit the battery module 2. The elasticity of the first positioning rib 111 is utilized to keep the battery module 2 in a close fit with the first positioning end face 1110 after installation. Furthermore, the battery assembly includes two groups of first positioning rib groups, which are spaced apart along the width direction of the shell 1, and the two groups of first positioning rib groups are respectively located on both sides of the battery module 2 along the axial direction, that is, part of the side face of the positive electrode conductive sheet 210 is fitted with a group of first positioning ribs 111. The first positioning end face 1110 is fitted with the first positioning end face 1110 in the other group of first positioning ribs 111, and part of the side surface of the negative conductive sheet 211 is fitted with the first positioning end face 1110 in another group of first positioning ribs 111, so that the axial direction of the battery module 2 is limited by the two groups of first positioning ribs 111, wherein the axial direction of the battery module 2 is the axial direction of the cylindrical battery unit; secondly, the first positioning rib 111 and the first side wall surface 102 are connected by the first plate rib 6, which not only improves the stability of the first positioning rib 111, but also improves the overall strength of the shell 1. Preferably, during the injection molding process, the shell 1, the first positioning rib 111 and the first plate rib 6 are an integrally formed structure.

[0036] Furthermore, there are multiple first positioning ribs 111, and the multiple first positioning ribs 111 are spaced apart along the length direction of the shell 1, and at least a portion of the first side surface 22 is respectively fitted with the first positioning end surface 1110 of each first positioning rib 111. It should be noted here that each group of first positioning ribs includes multiple first positioning ribs 111, and the multiple first positioning ribs 111 in each group are spaced apart along the length direction of the shell 1. Such an arrangement can reduce the cost of the battery assembly. Since the conductive sheet 21 connects multiple battery cells 20, one conductive sheet 21 can be respectively fitted with the first positioning end surfaces 1110 of two adjacent first positioning ribs 111. Therefore, the spacing of multiple first positioning ribs 111 can also achieve the positioning of the battery module 2.

[0037] In the utility model, the battery cell module 2 also includes a second side surface 23, at least a portion of the second side surface 23 is arranged on the battery cell unit 20, and the positioning portion 11 also includes: a second positioning rib 112, which is arranged on the bottom wall surface 101 of the installation cavity 10, the second positioning rib 112 protrudes relative to the bottom wall surface 101, and the second positioning rib 112 extends along the width direction of the shell 1, and the second positioning rib 112 is connected to the second side wall surface 103 of the installation cavity 10 through the second plate rib 7; a second positioning end surface 1120 is arranged on the second positioning rib 112, and at least a portion of the second side surface 23 is in contact with the second positioning end surface 1120; wherein the second positioning rib 112 can be elastically arranged. First, through the second positioning end face 1120 of the second positioning rib 112, during the installation of the battery module 2, the second side surface 23 is fitted with the second positioning end face 1120 to limit the battery module 2. The elasticity of the second positioning rib 112 is used to keep the battery module 2 in a close fit with the second positioning end face 1120 after installation, and cooperate with the first positioning end face 1110 to prevent the battery module 2 from shaking in the installation cavity 10. Further, the battery assembly includes two groups of second positioning rib groups, and the two groups of second positioning rib groups are arranged along the length of the shell 1. The two groups of second positioning rib groups are arranged in a square interval, and are respectively located on both sides of the battery module 2 along the radial direction, that is, a plurality of battery cell units 20 are arranged side by side, and the second side surfaces 23 on the two battery cell units 20 at both ends are respectively fitted with the second positioning end surfaces 1120 in the two groups of second positioning rib groups, wherein the radial direction of the battery module 2 is the radial direction of the cylindrical battery cell unit; secondly, the second positioning rib 112 is connected to the second side wall surface 103 by the second plate rib 7, which not only improves the stability of the second positioning rib 112, but also improves the overall strength of the shell 1.

[0038] Furthermore, there are multiple second positioning ribs 112, and the multiple second positioning ribs 112 are spaced apart along the width direction of the shell 1, and at least part of the second side surface 23 is respectively fitted with the second positioning end surface 1120 of each second positioning rib 112. Each group of second positioning ribs includes multiple second positioning ribs 112, and the multiple second positioning ribs 112 are spaced apart along the width direction of the shell 1. The second side surface 23 on the battery cell unit 20 can be respectively fitted with the second positioning end surface 1120 on each second positioning rib 112, which reduces the cost of the battery assembly. In comparison with designing the second positioning ribs 112 to run through the width direction of the shell 1, in the present application, intervals are generated between the second positioning ribs 112, so that each second positioning rib 112 is more likely to be deformed during the installation of the battery module 2, which facilitates the installation of the battery module 2.

[0039] During the specific implementation, the second side surface 23 is an arcuate surface, and the positioning portion 11 also includes: a third positioning rib 113, the third positioning rib 113 is respectively connected to the bottom wall surface 101 and the second positioning rib 112, and a third positioning end face 1130 is arranged on the third positioning rib 113, and the third positioning end face 1130 is connected to the second positioning end face 1120, and at least a part of the third positioning end face 1130 is an arcuate surface, and at least a part of the second side surface 23 is in contact with the third positioning end face 1130; wherein, a plurality of third positioning ribs 113 are respectively arranged on each second positioning rib 112, and the plurality of third positioning ribs 113 are arranged at intervals along the length direction of the second positioning rib 112. In the present application, the battery cell unit 20 is a cylindrical battery cell, and the surface of the cylindrical battery cell is an arc-shaped surface. Therefore, at least a portion of the third positioning end face 1130 is set as an arc-shaped surface and the third positioning end face 1130 is connected to the second positioning end face 1120. In this way, the third positioning end face 1130 is more closely fitted to the battery cell module 2, thereby strengthening the limiting effect on the battery cell module 2.

[0040] In the actual assembly process, after each battery cell unit 20 is welded together through the conductive sheet 21, it is placed in the installation cavity 10 of the plastic shell 1, and a buffer layer 8 is laid on the bottom wall 101 of the installation cavity 10, and the buffer layer 8 is a silicone layer, which is adhered to the bottom wall 101; the first positioning rib 111, the second positioning rib 112 and the third positioning rib 113 in the installation cavity 10 respectively limit the axial direction and radial direction of the battery cell module 2. When the conductive sheet 21 passes through the protective plate 3 and is electrically connected to the protective plate 3, the protective plate 3 is connected to the shell 1 through the fastener 5, and the protective plate 3 is used to limit the battery cell module 2 in the thickness direction, so that the battery cell module is fixed in the installation cavity 10, and then the plastic cover 9 is installed on the shell 1, and the shell 1 and the cover 9 are snap-fitted, and finally the shell 1 and the cover 9 are fixed by screws to form a battery pack with complete functions.

[0041] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0042] According to the battery assembly provided by the present application, it includes a shell 1, a battery cell module 2 and a protection plate 3. The shell 1 has an installation cavity 10, and a positioning portion 11 is provided on the inner wall surface of the installation cavity 10. The battery cell module 2 is installed in the installation cavity 10 and fits with the positioning portion 11. The battery cell module 2 is limited by the positioning portion 11. The battery cell module 2 includes a plurality of battery cell units 20 and a conductive sheet 21. Any two adjacent battery cell units 20 are connected by the conductive sheet 21. The protection plate 3 is arranged above the battery cell module 2 and fits with the battery cell module 2. The protection plate 3 is connected to the shell 1. In this way, the conductive sheet 21 is used instead of the battery holder to connect the battery units 20 together to keep the battery units 20 fixed to each other. At the same time, the positioning part 11 is used to limit the battery module 2 to prevent the battery module 2 from moving in the installation cavity 10. In addition, the conductive sheet 21 is directly connected to the battery unit 20, which simplifies the process operation and work flow, facilitates product production, reduces battery costs, and can maximize the use of the volume of the battery unit 20 to improve the energy density of the battery.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0045] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery assembly, characterized in that: include: A housing (1), wherein the housing (1) has a mounting cavity (10), and a positioning portion (11) is provided on an inner wall surface of the mounting cavity (10); A battery cell module (2) is arranged in the installation cavity (10), and at least a portion of the battery cell module (2) is in contact with the positioning portion (11) to limit the position of the battery cell module (2); The battery cell module (2) comprises a plurality of battery cell units (20) and a conductive sheet (21), and any two adjacent battery cell units (20) are connected via the conductive sheet (21); A protection plate (3) is arranged above the battery cell module (2) and is in contact with the battery cell module (2); the protection plate (3) is connected to the housing (1).

2. The battery assembly according to claim 1, characterized in that: The conductive sheet (21) comprises a positive electrode conductive sheet (210) and a negative electrode conductive sheet (211), and the positive electrodes of any two adjacent battery cell units (20) are connected via the positive electrode conductive sheet (210); The negative electrodes of any two adjacent battery core units (20) are connected via the negative electrode conductive sheet (211).

3. The battery assembly according to claim 1, characterized in that: The battery assembly also includes: An insulating adhesive layer (4) is arranged between the battery cell module (2) and the protective plate (3), and two sides of the insulating adhesive layer (4) are respectively bonded to the battery cell module (2) and the protective plate (3) to connect the battery cell module (2) and the protective plate (3).

4. The battery assembly according to claim 1, characterized in that: The protection plate (3) is provided with a through hole (30); The conductive sheet (21) is provided with a protruding contact (212), an included angle being formed between an extension direction of the protruding contact (212) and an extension direction of the conductive sheet (21), and at least a portion of the protruding contact (212) is electrically connected to the protective plate (3) after passing through the through hole (30).

5. The battery assembly according to claim 1, characterized in that: The protection plate (3) is provided with a mounting hole (31), and the positioning portion (11) comprises: A positioning column (110) is arranged in the housing (1); a fixing hole (1101) is arranged in the positioning column (110); the mounting hole (31) is opposite to the fixing hole (1101); a fastener (5) is sequentially inserted into the mounting hole (31) and the fixing hole (1101), so that the protection plate (3) is connected to the housing (1); There are a plurality of mounting holes (31), and the plurality of mounting holes (31) are arranged at intervals along the circumferential direction of the protection plate (3); There are a plurality of positioning posts (110), and the plurality of positioning posts (110) are arranged in a one-to-one correspondence with the plurality of mounting holes (31).

6. The battery assembly according to claim 1, characterized in that: The battery core module (2) comprises a first side surface (22), at least a portion of the first side surface (22) is located on the conductive sheet (21), and the positioning portion (11) further comprises: a first positioning rib (111) disposed on the bottom wall surface (101) of the installation cavity (10); the first positioning rib (111) protrudes relative to the bottom wall surface (101); the first positioning rib (111) extends along the length direction of the shell (1); the first positioning rib (111) and the first side wall surface (102) of the installation cavity (10) are connected via a first plate rib (6); A first positioning end surface (1110) is provided on the first positioning rib (111), and at least a portion of the first side surface (22) is in contact with the first positioning end surface (1110); Wherein, the first positioning rib (111) can be elastically arranged.

7. The battery assembly according to claim 6, characterized in that: There are a plurality of first positioning ribs (111), and the plurality of first positioning ribs (111) are arranged at intervals along the length direction of the shell (1), and at least a portion of the first side surface (22) is respectively fitted with the first positioning end surface (1110) of each of the first positioning ribs (111).

8. The battery assembly according to claim 1, characterized in that: The battery cell module (2) further comprises a second side surface (23), at least a portion of the second side surface (23) is arranged on the battery cell unit (20), and the positioning portion (11) further comprises: a second positioning rib (112) disposed on the bottom wall surface (101) of the installation cavity (10); the second positioning rib (112) protrudes relative to the bottom wall surface (101); the second positioning rib (112) extends along the width direction of the shell (1); the second positioning rib (112) and the second side wall surface (103) of the installation cavity (10) are connected via a second plate rib (7); A second positioning end surface (1120) is provided on the second positioning rib (112), and at least a portion of the second side surface (23) is in contact with the second positioning end surface (1120); Wherein, the second positioning rib (112) can be elastically arranged.

9. The battery assembly according to claim 8, characterized in that: There are a plurality of second positioning ribs (112), and the plurality of second positioning ribs (112) are arranged at intervals along the width direction of the shell (1), and at least a portion of the second side surface (23) is respectively fitted with the second positioning end surface (1120) of each of the second positioning ribs (112).

10. The battery assembly according to claim 9, characterized in that: The second side surface (23) is an arc-shaped surface, and the positioning portion (11) further comprises: a third positioning rib (113), the third positioning rib (113) being connected to the bottom wall surface (101) and the second positioning rib (112) respectively, the third positioning rib (113) being provided with a third positioning end surface (1130), the third positioning end surface (1130) being connected to the second positioning end surface (1120), at least a portion of the third positioning end surface (1130) being an arc-shaped surface, and at least a portion of the second side surface (23) being in contact with the third positioning end surface (1130); Wherein, each of the second positioning ribs (112) is respectively provided with a plurality of third positioning ribs (113), and the plurality of third positioning ribs (113) are arranged at intervals along the extension direction of the second positioning ribs (112).

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