Battery module, battery pack and electric equipment

Abstract

The utility model provides a battery module, a battery pack and electric equipment, and the battery module comprises battery cell groups which comprise a top-layer battery cell group and a non-top-layer battery cell group, and each layer of battery cell group comprises a plurality of battery cells arranged along a first direction; the bracket comprises a middle bracket and a top-layer bracket, the middle bracket is arranged between the top-layer battery cell group and the non-top-layer battery cell group and / or between two adjacent layers of battery cell groups of the non-top-layer battery cell group, the top-layer bracket is arranged on one side, deviating from the non-top-layer battery cell group, of the top-layer battery cell group, and the top-layer bracket is arranged along the stacking direction of the battery cell groups; a plurality of first accommodating grooves are formed in the side surfaces, close to the battery cell groups, of the middle bracket and the top-layer bracket, the plurality of first accommodating grooves are arranged along a first direction, the plurality of first accommodating grooves are respectively in one-to-one correspondence with a plurality of battery cells of the adjacent battery cell groups, and the battery cells are fixed in the corresponding first accommodating grooves. According to the utility model, the battery cell can be quickly and stably fixed, and the battery cell fixing structure is simplified.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and specifically to battery modules, battery packs, and electrical equipment. Background Art

[0002] In order to make the battery module have a relatively high capacity, the battery module is usually composed of multiple cells connected in parallel and in series. In the relevant module design, the stacking of cells is complex, resulting in more parts and more difficult processes, which greatly reduces the reliability of the product. Utility Model Content

[0003] The present application provides a battery module, a battery pack, and an electrical device, which can improve the technical problems of the complex structure of existing battery modules.

[0004] In a first aspect, the present application provides a battery module, comprising:

[0005] A battery cell group, including a top battery cell group and a non-top battery cell group, each layer of the battery cell group including a plurality of battery cells arranged along a first direction;

[0006] The bracket includes an intermediate bracket and a top bracket, wherein the intermediate bracket is arranged between the top battery cell group and the non-top battery cell group and / or between two adjacent layers of the non-top battery cell group, and the top bracket is arranged on the side of the top battery cell group away from the non-top battery cell group. Along the stacking direction of the battery cell group, the sides of the intermediate bracket and the top bracket close to the battery cell group are both provided with a plurality of first receiving grooves, the plurality of first receiving grooves are arranged in an array along a first direction, and the plurality of first receiving grooves respectively correspond to a plurality of battery cells of the battery cell group adjacent thereto, and the battery cells are fixed in the corresponding first receiving grooves.

[0007] In the present application, by providing an intermediate bracket between two adjacent layers of battery cell groups and providing a top bracket on the side of the top battery cell group facing away from the non-top battery cell group, and by fixing the circumferential surface of the battery cell in the first receiving grooves on both sides of the intermediate bracket and in the first receiving grooves on the side of the top bracket close to the battery cell group, the battery cell can be quickly and stably fixed, thereby simplifying the battery cell fixing structure, reducing parts, simplifying the process, and reducing costs.

[0008] In some embodiments, the periphery of the plurality of cells of the top cell group is covered in the first receiving groove of the top bracket and the first receiving groove of the middle bracket adjacent to the top bracket; and / or

[0009] The non-top cell group includes a middle cell group and a bottom cell group. The middle cell group is located between the top cell group and the bottom cell group. The peripheries of the multiple cells of the middle cell group are covered in the first receiving grooves of the adjacent intermediate brackets.

[0010] In the present application, by covering the periphery of the multiple battery cells of the top-layer battery cell group in the first receiving groove of the top-layer bracket and the first receiving groove of the adjacent middle bracket, and covering the periphery of the multiple battery cells of the middle-layer battery cell group in the first receiving groove of the middle bracket, the battery cells can be fixed more stably, thereby improving the stability of the overall structure.

[0011] In some embodiments, a first adhesive layer is disposed between the first receiving groove and the peripheral surface of the battery cell located therein.

[0012] In the present application, by providing a first adhesive layer between the circumference of the battery cell and the first receiving groove, the circumference of the battery cell can be bonded to the top support and the middle support, further improving the stability of the battery cell on the top support and the middle support.

[0013] In some embodiments, the middle bracket and the top bracket each include two first end plates respectively arranged at the positive end and the negative end of the battery cell, each first end plate is correspondingly provided with a first positioning groove, each first positioning groove is communicated with a first receiving groove, and the positive and negative electrodes of the battery cell are respectively arranged in the first positioning grooves of the two first end plates.

[0014] In the present application, by setting a first positioning groove and setting the positive and negative poles of the battery cell in two corresponding first positioning grooves respectively, the battery cell can be quickly positioned when installing the battery cell, and the installation accuracy between the battery cell and the middle bracket and the top bracket is improved, thereby improving the stability of the battery cell on the top bracket and the middle bracket.

[0015] In some embodiments, the first positioning groove penetrates the first end plate along the thickness direction of the first end plate, and the positive and negative electrodes of the battery cells in different layers of the battery cell groups are connected by a tab, which is arranged on the side of the first end plate away from the battery cells.

[0016] In the present application, by passing the first positioning groove through the first end plate and connecting the positive and negative electrodes of the battery cells in the first positioning groove through the bar sheet, the battery cells can be connected in series and parallel, and then the electricity can be output.

[0017] In some embodiments, the top bracket is connected to the middle bracket by snap-fit; and / or

[0018] A plurality of intermediate brackets are provided, and two adjacent intermediate brackets are connected by buckles.

[0019] In the present application, the top bracket and multiple intermediate brackets are connected by snap-fit ​​connections, which can improve the stability of the entire battery module and facilitate installation.

[0020] In some embodiments, the intermediate bracket is integrally formed; and / or

[0021] The top bracket is formed in one piece.

[0022] In the present application, the middle bracket and the top bracket are formed in one piece, which can simplify the installation process of the battery module.

[0023] In a second aspect, the present application provides a battery pack, comprising:

[0024] The housing comprises a cover and a shell, wherein the cover and the shell are covered;

[0025] The battery module is arranged in the outer shell.

[0026] In some embodiments, a bottom battery cell group of the battery cell group is arranged near the inner bottom of the shell, and a plurality of second receiving grooves are arranged along the first direction on the inner bottom of the shell, and the plurality of second receiving grooves correspond one by one to the plurality of battery cells of the bottom battery cell group, and a portion of the circumference of each battery cell of the bottom battery cell group is fixed in the corresponding second receiving groove.

[0027] In the present application, by providing a second receiving groove at the inner bottom of the shell, the rapid and stable fixation of the bottom battery cell group and the inner bottom of the shell can be improved, which can facilitate the installation of the battery cell module and the shell.

[0028] In some embodiments, a second adhesive layer is disposed between the second receiving groove and the peripheral surface of the battery cell of the bottom battery cell group located therein; and / or

[0029] Two second end plates are provided at the inner bottom of the end surface of the shell, and the two second end plates are respectively arranged at the positive end and the negative end of the battery cell. Each second end plate is correspondingly provided with a second positioning groove, and each second positioning groove is communicated with a second receiving groove. The positive and negative electrodes of the battery cells of the bottom battery cell group are respectively arranged in the second positioning grooves of the two second end plates.

[0030] In the present application, by providing a second adhesive layer between the second receiving groove and the peripheral surface of the battery cell of the bottom battery cell group, the peripheral surface of the bottom battery cell and the bottom of the shell can be bonded, further improving the stability of the battery cell module in the shell. By providing a second positioning groove, and respectively providing the positive and negative electrodes of the battery cell of the bottom battery cell group in two corresponding second positioning grooves, the bottom battery cell can be quickly positioned when installing the battery cell, while improving the installation accuracy between the battery cell and the shell, thereby improving the stability of the battery cell in the shell.

[0031] In some embodiments, a third adhesive layer is disposed between two sides of the battery module along the first direction and the housing.

[0032] In the present application, by providing a third adhesive layer between the two sides of the battery module along the first direction and the shell, the battery module can be bonded to the side of the shell, further improving the stability of the battery module in the shell.

[0033] In some embodiments, the top support and the middle support of the battery module further include two side panels arranged on both sides of the battery cell group along the first direction, the third adhesive layer is arranged between the side panels and the shell, and a groove is arranged on the side of the side panel close to the shell.

[0034] In the present application, by providing a groove on the side panel, the bonding effect of the third adhesive layer on the battery cell module and the side of the shell can be improved.

[0035] In a third aspect, the present application provides an electrical device, including the above-mentioned battery module or the above-mentioned battery pack or the above-mentioned battery group. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 It is a structural schematic diagram of the battery module provided by this application;

[0038] Figure 2 It is a schematic diagram of the structure of the intermediate bracket provided in this application;

[0039] Figure 3 It is a schematic diagram of the structure of the top bracket provided in this application;

[0040] Figure 4 It is a schematic diagram of the structure of the non-top battery cell group provided by the present application;

[0041] Figure 5 is an exploded view of the battery pack provided in this application;

[0042] Figure 6 It is a structural schematic diagram of the shell provided in this application.

[0043] Description of the drawings: battery cell -10, positive electrode -111, negative electrode -112, intermediate bracket -20, first receiving groove -21, top bracket -30, first adhesive layer -40, first end plate -50, first positioning groove -51, tab -60, buckle -70, cover -80, shell -90, second receiving groove -91, second end plate -92, second positioning groove -921, second adhesive layer -100, third adhesive layer -110, side plate -120, groove -121. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0045] First, see Figure 1 to Figure 4 , an embodiment of the present application provides a battery module, comprising:

[0046] A battery cell group, including a top battery cell group and a non-top battery cell group, each layer of the battery cell group includes a plurality of battery cells 10 arranged along a first direction A;

[0047] The bracket includes an intermediate bracket 20 and a top bracket 30. The intermediate bracket 20 is arranged between the top battery cell group and the non-top battery cell group and / or between two adjacent layers of the non-top battery cell group. The top bracket 30 is arranged on the side of the top battery cell group away from the non-top battery cell group. Along the stacking direction B of the battery cell group, the sides of the intermediate bracket 20 and the top bracket 30 close to the battery cell group are both provided with a plurality of first receiving grooves 21. The plurality of first receiving grooves 21 are arranged along the first direction A. The plurality of first receiving grooves 21 respectively correspond to the plurality of battery cells 10 of the battery cell group adjacent thereto, and the battery cells 10 are fixed in the corresponding first receiving grooves 21.

[0048] It can be understood that the battery cell group includes a plurality of battery cells 10 arranged along the first direction A, and the axial directions of the plurality of battery cells 10 can be perpendicular to the first direction A. Electrodes of the same polarity of the plurality of battery cells 10 in the same layer of the battery cell group can be located on the same side or on the opposite side of the battery cell group. Exemplarily, among the plurality of battery cells 10 in the same layer of the battery cell group, electrodes of the same polarity of two adjacent battery cells 10 are located on the opposite sides of the battery cell group. The shape of the first receiving groove 21 can be a standard geometric shape, such as a semicircle, an arc, a square, a rectangle, etc. Exemplarily, the shape of the first receiving groove 21 can be adapted to the circumferential shape of the battery cell 10, so that the first receiving groove 21 fixes the battery cell 10 more stably. The size of the first receiving groove 21 can be set as needed, as long as it can accommodate the circumferential surface of the battery cell 10 exposed in the first receiving groove 21. The first receiving groove 21 has a corresponding relationship with the number of battery cells 10. Exemplarily, the first receiving groove 21 and the battery cell 10 can be in a 1:N relationship, where N is a positive integer greater than or equal to 1. It can be understood that when N is 1, the first receiving groove 21 and the battery cell 10 are in a one-to-one correspondence, and the one-to-one correspondence can make the fixation of the battery cell 10 have better stability. The number of layers of the battery cell group can be set as needed. The shape of the battery cell 10 can be cylindrical, square or other shapes. The non-top battery cell group can include a single layer of battery cell group, and can also include a multi-layer battery cell group. The non-top battery cell group includes a single layer of battery cell group, and the intermediate bracket 20 is arranged between the top battery cell group and the non-top battery cell group. The non-top battery cell group includes a multi-layer battery cell group, and the intermediate bracket 20 can be arranged between the top battery cell group and the non-top battery cell group, and can also be arranged between two adjacent layers of the non-top battery cell group, and can also be arranged between the top battery cell group and the non-top battery cell group and between two adjacent layers of the non-top battery cell group.

[0049] In some embodiments, the periphery of the plurality of battery cells 10 of the top battery cell group is covered in the first receiving groove 21 of the top bracket 30 and the first receiving groove 21 of the middle bracket 20 adjacent to the top bracket 30; and / or

[0050] The non-top cell group includes a middle cell group and a bottom cell group. The middle cell group is located between the top cell group and the bottom cell group. The peripheries of the multiple cells 10 of the middle cell group are covered in the first receiving grooves 21 of the adjacent intermediate brackets 20 .

[0051] It can be understood that the circumference of the battery cell 10 of the top battery cell group can be partially disposed in the first receiving groove 21 of the middle bracket 20 adjacent to the first receiving groove 21 and the top bracket 30, or can be completely covered in the first receiving groove 21 and the first receiving groove 21 of the middle bracket 20 adjacent to the top bracket 30. The circumference of the battery cell 10 of the middle battery cell group can be partially disposed in the first receiving groove 21, or can be completely covered in the first receiving groove 21.

[0052] The circumference of the battery cell 10 is completely covered, which can improve the stability of the battery cell 10 in the first receiving groove 21 .

[0053] In some embodiments, a first adhesive layer 40 is disposed between the first receiving groove 21 and the peripheral surface of the battery cell 10 located therein.

[0054] It can be understood that the first adhesive layer 40 can be provided on a part of the circumference of the battery cell 10, or can be provided on the entire circumference of the battery cell 10. The first adhesive layer 40 is provided on the entire circumference of the battery cell 10, which can improve the connection stability between the battery cell 10 and the first receiving groove 21. The thickness of the first adhesive layer 40 can be set as needed.

[0055] In some embodiments, the middle bracket 20 and the top bracket 30 each include two first end plates 50 respectively arranged at the positive end and the negative end of the battery cell 10, each first end plate 50 is correspondingly provided with a first positioning groove 51, each first positioning groove 51 is communicated with a first receiving groove 21, and the positive electrode 111 and the negative electrode 112 of the battery cell 10 are respectively arranged in the first positioning grooves 51 of the two first end plates 50.

[0056] It can be understood that the first positioning groove 51 can accommodate part of the positive / negative electrode of the battery cell 10, or the entire positive / negative electrode of the battery cell 10. The positive electrode 111 and the negative electrode 112 of the battery cell 10 are respectively arranged in the first positioning groove 51, and the first positioning grooves 51 of two upper and lower adjacent brackets (including the top bracket and the middle bracket) can be combined to accommodate the positive / negative electrode of the battery cell 10, or the first positioning groove 51 of one bracket (including the top bracket and the middle bracket) can accommodate the positive / negative electrode of the battery cell 10 alone. The first positioning grooves 51 of two upper and lower adjacent brackets (including the top bracket and the middle bracket) are combined to accommodate the positive / negative electrode of the battery cell 10, which can make the assembly and positioning of the upper and lower brackets faster and more accurate.

[0057] In some embodiments, the first positioning groove 51 penetrates the first end plate 50 along the thickness direction of the first end plate 50, and the positive electrodes 111 and negative electrodes 112 of the battery cells 10 in different layers are connected by the bar piece 60, and the bar piece 60 is arranged on the side of the first end plate 50 away from the battery cell 10.

[0058] It can be understood that the thickness of the first positioning groove 51 can be the same as the thickness of the positive electrode 111 and the negative electrode 112 of the battery cell 10, can be greater than the thickness of the positive electrode 111 and the negative electrode 112 of the battery cell 10, or can be less than the thickness of the positive electrode 111 and the negative electrode 112 of the battery cell 10. The shape of the first positioning groove 51 is the same as that of the positive electrode 111 and the negative electrode 112 of the battery cell 10.

[0059] In some embodiments, the top bracket 30 is connected to the middle bracket 20 via a buckle 70; and / or

[0060] A plurality of intermediate brackets 20 are provided, and two adjacent intermediate brackets 20 are connected via a buckle 70 .

[0061] It can be understood that the top bracket 30 and the middle bracket 20 are connected by the buckle 70. A hook can be provided on the top bracket 30 and a slot can be provided on the middle bracket 20, or a slot can be provided on the top bracket 30 and a hook can be provided on the middle bracket 20. The hook can be locked in the slot to achieve the connection between the two. The buckle 70 connection can be provided around the outer side of the bracket for easy installation.

[0062] In some embodiments, the intermediate bracket 20 is integrally formed; and / or

[0063] The top bracket 30 is formed in one piece.

[0064] Second, see Figure 1 to Figure 6 , the present application provides a battery pack, comprising:

[0065] The housing comprises a cover 80 and a shell 90, wherein the cover 80 and the shell 90 are covered;

[0066] The battery module is arranged in the outer shell.

[0067] In some embodiments, the bottom battery cell group of the battery cell group is arranged near the inner bottom of the shell 90, and a plurality of second receiving grooves 91 are arranged along the first direction A at the inner bottom of the shell 90. The plurality of second receiving grooves 91 correspond one-to-one to the bottom battery cell group, and a portion of the circumference of each battery cell of the bottom battery cell group is fixed in the corresponding second receiving groove 91.

[0068] It can be understood that the shape of the second receiving groove 91 can be a standard geometric shape, such as a semicircle, an arc, a square, a rectangle, etc. The shape of the second receiving groove 91 corresponds to the shape of the circumference of the bottom battery cell 10 one by one, and the second receiving groove 91 fixes the bottom battery cell 10 more stably. The size of the second receiving groove 91 can be set as needed, as long as it can accommodate the circumference of the bottom battery cell 10 exposed in the second receiving groove 91. The number of the second receiving grooves 91 and the bottom battery cell 10 corresponds one by one, and the second receiving grooves 91 and the bottom battery cell 10 can correspond one by one, or one to many, and the one-to-one correspondence has better stability.

[0069] In some embodiments, a second adhesive layer 100 is disposed between the second receiving groove 91 and the peripheral surface of the battery cell 10 of the bottom battery cell group located therein; and / or

[0070] Two second end plates 92 are provided at the inner bottom of the shell 90, and the two second end plates 92 are respectively arranged at the positive end and the negative end of the battery cell 10, and each second end plate 92 is correspondingly provided with a second positioning groove 921, and each second positioning groove 921 is communicated with a second receiving groove 91, and the positive electrode 111 and the negative electrode 112 of the battery cell 10 of the bottom battery cell group are respectively arranged in the second positioning grooves 921 of the two second end plates 92.

[0071] It can be understood that the second adhesive layer 100 can be provided on a portion of the circumference of the bottom battery cell 10 exposed in the shell 90, or can be provided on the entire circumference of the bottom battery cell 10 exposed in the shell 90. The second adhesive layer 100 is provided on the entire circumference of the bottom battery cell 10 exposed in the shell 90, which can improve the connection stability between the bottom battery cell 10 and the second receiving groove 91. The thickness of the second adhesive layer 100 can be set as needed.

[0072] In some embodiments, a third adhesive layer 110 is disposed between two sides of the battery module along the first direction A and the housing 90 .

[0073] It can be understood that the third adhesive layer 110 can be disposed on part of the sides of the battery module along the first direction A, or can be disposed on all the sides of the battery module along the first direction A. The second adhesive layer 100 is disposed on all the sides of the battery module along the first direction A, which can improve the connection stability between the battery module and the housing 90. The shape of the third adhesive layer 110 matches the gap between the two sides of the battery module along the first direction A and the housing 90. The thickness of the third adhesive layer 110 can be set as needed.

[0074] In some embodiments, the top bracket 30 and the middle bracket 20 of the battery module further include two side panels 120 respectively arranged on both sides of the battery cell group along the first direction A, the third adhesive layer 110 is arranged between the side panel 120 and the shell 90, and a groove 121 is arranged on the side of the side panel 120 close to the shell 90.

[0075] It is understood that the size and shape of the side plate 120 can be set as needed. The side plates 120 of the top bracket 30 and the middle bracket 20 can abut against each other, so that they can be combined into a whole, thereby increasing the coverage area of ​​the third adhesive layer 110. The number, size, shape, and depth of the grooves 121 on the side plate 120 can be set as needed.

[0076] In a third aspect, an embodiment of the present application provides an electrical device, comprising the above-mentioned battery module or the above-mentioned battery pack.

[0077] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery module, characterized in that: include: A battery cell group, including a top battery cell group and a non-top battery cell group, each layer of the battery cell group including a plurality of battery cells arranged along a first direction; A bracket, comprising an intermediate bracket and a top bracket, wherein the intermediate bracket is arranged between the top battery cell group and the non-top battery cell group and / or between two adjacent layers of battery cell groups of the non-top battery cell group, and the top bracket is arranged on a side of the top battery cell group away from the non-top battery cell group. Along the stacking direction of the battery cell group, the side surfaces of the intermediate bracket and the top bracket close to the battery cell group are both provided with a plurality of first receiving grooves, the plurality of first receiving grooves are arranged in an array along the first direction, the plurality of first receiving grooves respectively correspond to a plurality of battery cells of the battery cell group adjacent thereto, and the battery cells are fixed in the corresponding first receiving grooves.

2. The battery module according to claim 1, characterized in that: The periphery of the plurality of cells of the top cell group is covered in the first receiving groove of the top bracket and the first receiving groove of the middle bracket adjacent to the top bracket; and / or The non-top cell group includes a middle cell group and a bottom cell group. The middle cell group is located between the top cell group and the bottom cell group. The periphery of the multiple cells of the middle cell group is covered in the first receiving groove of the adjacent intermediate bracket.

3. The battery module according to claim 1, characterized in that: A first adhesive layer is arranged between the first receiving groove and the peripheral surface of the battery core located therein.

4. The battery module according to claim 1, characterized in that: The intermediate bracket and the top bracket each include two first end plates respectively arranged at the positive end and the negative end of the battery cell, each of the first end plates is correspondingly provided with a first positioning groove, each of the first positioning grooves is communicated with a first receiving groove, and the positive and negative electrodes of the battery cell are respectively arranged in the first positioning grooves of the two first end plates.

5. The battery module according to claim 4, characterized in that: The first positioning groove penetrates the first end plate along the thickness direction of the first end plate, and the positive and negative electrodes of the battery cells of the battery cell groups in different layers are connected through a bar piece, and the bar piece is arranged on a side of the first end plate away from the battery cell.

6. The battery module according to claim 4, characterized in that: The top bracket is connected to the middle bracket by snap-fit; and / or A plurality of intermediate brackets are provided, and two adjacent intermediate brackets are connected by buckles.

7. The battery module according to claim 6, characterized in that: The intermediate bracket is integrally formed; and / or The top bracket is integrally formed.

8. A battery pack, characterized in that: include: The housing comprises a cover and a shell, wherein the cover and the shell are covered; The battery module according to any one of claims 1 to 7 is arranged in the housing.

9. The battery pack according to claim 8, characterized in that: The bottom battery cell group of the battery cell group is arranged close to the inner bottom of the shell, and the inner bottom of the shell is provided with a plurality of second receiving grooves along the first direction, and the plurality of second receiving grooves correspond one by one to the plurality of battery cells of the bottom battery cell group, and a part of the circumference of each battery cell of the bottom battery cell group is fixed in the corresponding second receiving groove.

10. The battery pack according to claim 9, characterized in that: A second adhesive layer is provided between the second receiving groove and the peripheral surface of the battery cell of the bottom battery cell group located therein; and / or Two second end plates are provided at the inner bottom of the end surface of the shell, and the two second end plates are respectively arranged at the positive end and the negative end of the battery cell, and each second end plate is correspondingly provided with a second positioning groove, and each second positioning groove is communicated with a second receiving groove, and the positive and negative electrodes of the battery cells of the bottom battery cell group are respectively arranged in the second positioning grooves of the two second end plates.

11. The battery pack according to claim 8, characterized in that: A third adhesive layer is disposed between the two sides of the battery module along the first direction and the housing.

12. The battery pack according to claim 11, characterized in that: The top bracket of the battery module and the middle bracket also respectively include two side panels arranged on both sides of the battery cell group along the first direction, the third adhesive layer is arranged between the side panels and the shell, and the side panel close to the shell is provided with a groove.

13. An electrical equipment, characterized in that: It comprises a battery module as described in any one of claims 1 to 7 or a battery pack as described in any one of claims 8 to 12.

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