CN215266502U - Battery pack and electric equipment - Google Patents

Abstract

The embodiment of the application relates to a battery package and consumer, battery package include the electric core of a plurality of superpositions, and electric core includes electrode subassembly, packaging shell and utmost point ear, and electrode subassembly is acceptd in the portion of holding, and the one end and the electrode subassembly of utmost point ear are connected, and the packaging shell is stretched out to the other end of utmost point ear, and the battery package still includes: first support and first insulating part, first support are equipped with first space, and the first space is located to the utmost point ear of a plurality of electric cores at least partially, and first insulating part forms after the solidification through locating first space with the resin, and first insulating part parcel utmost point ear extends the part of encapsulation shell. The first space is located to the utmost point ear of a plurality of electric cores in the battery package at least part, locates first space through first insulator, and the part that encapsulation shell is extended to first insulator parcel utmost point ear, and the simple structure of battery package, its space that occupies is little. At least part of the lugs of the battery cells is protected through the first support, and damage between the battery cells and external equipment due to collision and the like is reduced.

Description

Battery pack and electric equipment

Technical Field

The embodiment of the application relates to the technical field of batteries.

Background

The battery cell is a device that converts external energy into electric energy and stores the electric energy in the battery cell so as to supply power to external electric equipment (such as portable electronic equipment) at a required time. At present, the battery cell is widely applied to electric equipment such as unmanned aerial vehicles, mobile phones, flat panels, and notebook computers. Generally, in order to improve the power supply capacity of a battery cell, a plurality of battery cells are stacked, and then a battery pack is formed for use by electric equipment.

In the process of implementing the present application, the applicant of the present application finds that the structure of the battery pack is complex and occupies a large space.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, embodiments of the present application provide a battery pack and an electric device, which improve the problem of complicated structure of the battery pack.

According to an aspect of an embodiment of the present application, there is provided a battery pack including an electrode assembly, a package case, tabs, a first bracket, and a first insulator. The packaging shell comprises a containing part and a first sealing edge part formed by outwards extending the containing part, the electrode assembly is contained in the containing part, one end of the tab is connected with the electrode assembly, the other end of the tab extends out of the packaging shell from the first sealing edge part, a first space is arranged on the first support, and at least part of the tabs of the plurality of cells is arranged in the first space. The first insulating piece is formed by arranging resin in the first space and then curing, and the first insulating piece wraps the part, extending out of the packaging shell, of the tab.

This application protects electric core through first support and first insulating part, and the utmost point ear part of a plurality of electric cores is located at least first space to the space that the battery package of this application occupy is few and can protect electric core, between electric core and another electric core, and be difficult to between electric core and the external equipment because of reasons such as collision impaired.

In an optional mode, the battery pack further includes a second bracket, the first bracket and the second bracket are arranged at an interval along a first direction, the second bracket is provided with a second space, and at least part of the plurality of battery cells is arranged in the second space; the plurality of cell portions are located on the second support and the first support. The second support and the first support are arranged at intervals, so that the space occupied by the battery pack is reduced, the battery pack can also dissipate heat through the vacant positions between the second support and the first support, and the heat dissipation performance of the battery pack is good.

In an optional mode, the battery pack further includes a first circuit board, the first circuit board is accommodated in the first space, the first circuit board is electrically connected to the plurality of battery cells, and the first insulating member wraps the first circuit board. The first circuit board electrically connected with the battery core is wrapped by the first insulating part, and relative movement is not easy to generate between the battery core and the first circuit board.

In an optional mode, the battery pack further includes a second circuit board electrically connected to the first circuit board, the second circuit board is disposed in the first space, the second circuit board is disposed on a side of the first circuit board away from the battery core, and the first insulating member wraps the second circuit board. The second circuit board electrically connected with the first circuit board is also wrapped by the first insulating part, and relative movement is not easy to generate between the battery cell and between the battery cell and the first circuit board and between the battery cell and the second circuit board.

In an alternative mode, the other end of the tab extends out of the first sealing edge portion and then is electrically connected to the first circuit board.

In an optional mode, the accommodating portion includes a third sidewall and a fourth sidewall, the third sidewall is connected to the first sealing portion, the fourth sidewall is connected to the first sealing portion, and the third sidewall and the fourth sidewall are disposed on two opposite sides of the first sealing portion. The first and third side walls form a first recess, the first and fourth side walls form a second recess, the first recess is substantially L-shaped, and the second recess is substantially L-shaped.

In an alternative mode, the first sealing portion is disposed at a central position of the accommodating portion, and a length of the third side wall and a length of the fourth side wall are substantially the same along a stacking direction of the plurality of battery cells. In other embodiments, the first sealing portion is disposed at another position of the accommodating portion, and the length of the third sidewall is different from the length of the fourth sidewall along the stacking direction of the plurality of battery cells.

In an optional mode, the accommodating portion further extends outwards to form a second edge sealing portion and a third edge sealing portion, the second edge sealing portion and the third edge sealing portion are arranged oppositely, the third side wall, the fourth side wall and the first edge sealing portion are all connected with the second edge sealing portion, and the third side wall, the fourth side wall and the first edge sealing portion are all connected with the third edge sealing portion.

In an alternative form, the first insulating member wraps around the first bead portion. Through the protection of first flange portion, the stable in structure of battery package to first insulating part.

In an optional manner, the second circuit board includes an electronic component, the first circuit board is provided with a second opening, and the electronic component is located between the first sealing edge portions of two adjacent battery cells after passing through the second opening.

Optionally, the electronic element passes through the second opening and then abuts against the battery cell.

Optionally, along the first direction, the electronic element passes through the second opening and then has a distance with the battery cell.

Optionally, the electronic element is at least partially located between the first sealing edge portions of two adjacent battery cells after passing through the second opening.

Optionally, the plurality of battery cells are stacked in the second direction, and the electronic component is at least partially located between the first frame and the first frame of the outermost battery cell of the plurality of stacked battery cells after passing through the second opening.

In an optional mode, the battery pack further includes a conductive member, the conductive member is disposed on the first circuit board, the tabs of the plurality of battery cells are electrically connected to the conductive member, the second circuit board is provided with a third opening, and the conductive member penetrates through the third opening and is connected to the second circuit board. Set up electrically conductive and third opening, when second circuit board and first circuit board equipment, convenient spacing.

In an optional mode, the battery pack further comprises a second insulating member, and the second insulating member covers a portion of the battery cell between the first bracket and the second bracket. By providing the second insulating member, the collision of the battery cell with the external device can be buffered.

Wherein the second insulator comprises foam.

In an optional manner, the second bracket is provided with a first opening communicated with the second space, the battery pack further includes a third insulating member, the third insulating member is provided on a side of the second bracket away from the battery core, and the third insulating member covers the first opening. By providing the third insulating member, the collision of the battery cell with external equipment can be buffered.

Wherein the third insulator comprises foam.

In an alternative mode, the first insulating member includes a potting adhesive, or the first insulating member is formed by setting a flowing resin in the first space through an injection molding process and then curing the resin.

According to an aspect of an embodiment of the present application, there is provided an electric device including: in the battery pack and the battery compartment, a fourth space is arranged in the battery compartment, and the battery pack is contained in the fourth space.

In an optional manner, the electric device further includes a functional module, the functional module is accommodated in the fourth space, and the functional module is electrically connected to the battery pack.

In an alternative form, the functional module is electrically connected to the second circuit board.

In an optional mode, the electric equipment comprises a scooter, the scooter comprises a frame, a front wheel and a rear wheel which are arranged at two opposite ends of the frame, and the battery compartment is arranged between the front wheel and the rear wheel. The frame rechargeable battery storehouse of scooter protects the battery package, and the space utilization of scooter is high.

The beneficial effects of the embodiment of the application are that: the utility model provides a battery package and consumer, through setting up first support at the battery package, the first space is located to the utmost point ear at least part of a plurality of electric cores in the battery package, locates first space through first insulator, and first insulator parcel utmost point ear extends the part of encapsulation shell, and the simple structure of battery package, its space that occupies is little. In addition, at least part of the pole lug in the battery pack is protected through the first support and the first insulating part, and the battery core in the battery pack and the battery core are not easy to generate relative displacement. In addition, the heat dissipation performance of the part, which is not arranged in the first space, of the battery cell is good.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic partial structural diagram of a battery pack provided in an embodiment of the present application;

fig. 2 is an exploded schematic view of a battery pack provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a battery cell provided in an embodiment of the present application;

fig. 4 is a schematic view illustrating a second insulating member provided in a battery pack according to an embodiment of the present application;

FIG. 5 is a cross-sectional view taken along line BB of FIG. 4 as provided by an embodiment of the present application;

FIG. 6 is an enlarged view of portion A of FIG. 5 according to an exemplary embodiment of the present disclosure;

fig. 7 is a partial sectional view of a partial structure of a battery pack provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a powered device provided by an embodiment of the present application;

fig. 9 is an exploded schematic view of an electric device provided in an embodiment of the present application;

FIG. 10 is a schematic view of a scooter provided in an embodiment of the present application;

fig. 11 is a schematic partial explosion view of a scooter according to an embodiment of the present application;

fig. 12 is a schematic diagram illustrating a functional module connected to a battery pack according to an embodiment of the present application.

Detailed Description

In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2 and 3, the battery pack 100 includes: a plurality of stacked cells 3, a first support 1, and a first insulating member 7. The battery cell 3 includes an electrode assembly (not shown), an encapsulating case 31, and tabs 32. The electrode assembly is accommodated in the package case 31, one end of the tab 32 is connected to the electrode assembly, and the other end of the tab 32 protrudes from the package case 31. The first support 1 is provided with a first space 11s, at least a part of a tab 32 of the battery cell 3 extending out of the packaging shell 31 is arranged in the first space 11s, the first insulating piece 7 is contained in the first space 11s, the first insulating piece 7 wraps the part of the tab 32 extending out of the packaging shell, and the resin is arranged in the first space 11s and then cured to form the first insulating piece 7. The plurality of cells 3 are protected by the first support 1 and the first insulating member 7.

In some embodiments, the first insulator 7 comprises a potting compound.

In some embodiments, the first insulating member 7 is formed by curing a flowing resin after the resin is provided to the first space 11s through an injection molding process.

In some embodiments, referring to fig. 2, 4 and 5, the first support 1 is provided with a second top wall 11 and four second side walls 12, the four second side walls 12 are all connected to the second top wall 11, the four second side walls 12 and the second top wall 11 enclose a first space 11s, after the plurality of battery cells 3 are placed in the first space 11s, after the first support 1 is inverted, a flowing resin is injected into the first space 11s, the flowing resin is cured to form a first insulating member 7 wrapping the tab 32 of the battery cell 3, and the first insulating member 7 is disposed in a gap between the tab 32 and the first support 1. The flowing resin is injected after the first support 1 is inverted, so that the injection amount of the flowing resin is conveniently controlled, and whether the curing is finished or not is conveniently observed in the manufacturing process.

Referring to fig. 1 and 2, the battery pack 100 further includes a second bracket 2, and the second bracket 2 and the first bracket 1 are disposed opposite to each other along the first direction L1. The second holder 2 is provided with a second space 21. The plurality of battery cells 3 are partially provided in the first space 11s, and the plurality of battery cells 3 are at least partially provided in the second space 21. Along first direction L1, second support 2 and first support 1 are apart from first distance D, and electric core 3 partially exposes outside second support 2 and first support 1, is favorable to the heat that electric core 3 produced to spill from the interval between first support 1 and second support 2, is favorable to improving the heat dissipation of battery package 100.

Referring to fig. 2 and 3, in some embodiments, the package casing 31 of the battery cell 3 includes a receiving portion 311 and a first sealing portion 312 formed by extending outward from the receiving portion 311, and the other end of the tab 32 protrudes from the first sealing portion 312.

The receiving portion 311 includes a third sidewall 3111 and a fourth sidewall 3112, the third sidewall 3111 is connected to the first sealing portion 312, the fourth sidewall 3112 is connected to the first sealing portion 312, and the third and fourth sidewalls 3112 are disposed at two opposite sides of the first sealing portion 312. The first sealing portion 312 and the third side wall 3111 form a first concave portion 3111s, the first sealing portion 312 and the fourth side wall 3112 form a second concave portion 3112s, the first concave portion 3111s is substantially L-shaped, and the second concave portion 3112s is substantially L-shaped. In this embodiment, the first sealing portion 312 is disposed at the center of the accommodating portion 311, and the length w1 of the third side wall 3111 and the length w2 of the fourth side wall 3112 are substantially the same along the stacking direction L2 of the plurality of battery cells 3. In other embodiments, the first sealing portion 312 is disposed at other positions of the accommodating portion 311, and the length w1 of the third side wall 3111 is different from the length w2 of the fourth side wall 3112 along the stacking direction L2 of the plurality of battery cells 3.

The accommodating portion 311 further extends outward to form a second sealing portion 313 and a third sealing portion 314, the second sealing portion 313 and the third sealing portion 314 are disposed opposite to each other, the third side wall 3111, the fourth side wall 3112 and the first sealing portion 312 are connected to the second sealing portion 313, and the third side wall 3111, the fourth side wall 3112 and the first sealing portion 312 are connected to the third sealing portion 314.

Referring to fig. 2 and fig. 3, in some embodiments, the tab 32 of the battery cell 3, the first sealing portion 312 of the battery cell 3, and a portion of the accommodating portion 311 close to the first sealing portion 312 are all accommodated in the first space 11s, and a portion of the accommodating portion 31 of the battery cell 3 far from the tab 32 is accommodated in the second space 21.

In some embodiments, referring to fig. 4, 5 and 6, the first insulating member 7 wraps the first sealing portion 312.

In some embodiments, the first insulator 7 also wraps the portion of the receiving portion 311 near the tab 32.

In some embodiments, referring to fig. 2, fig. 4 and fig. 5, the battery pack 100 further includes a first circuit board 4, the first circuit board 4 is electrically connected to the plurality of battery cells 3, the first circuit board 4 is accommodated in the first space 11s, and the first circuit board 4 is electrically connected to the plurality of battery cells 3. The first insulating member 7 wraps the first circuit board 4. After the first circuit board 4 and the plurality of battery cells 3 are placed in the first space 11s, the first bracket 1 is inverted, and then the flowable resin is injected into the first space 11s, and the flowable resin is cured in the first space 11s to form the first insulating member 7 that covers the first circuit board 4, the tab 32, and the first sealing portion 312.

In some embodiments, referring to fig. 2 and fig. 7, the tabs 32 of the stacked multiple battery cells 3 are sequentially connected and then connected to the conductive component 6, the multiple battery cells 3 are respectively connected to the first circuit board 4, the first circuit board 4 is provided with a fourth opening 42, the number of the fourth openings 42 is multiple, and the tabs 32 of two adjacent battery cells 3 pass through the fourth openings 42 and then are connected to the first circuit board 4. Optionally, the battery pack 100 includes a conductive sheet (not shown) disposed on the first circuit board 4, the tabs 32 of two adjacent battery cells 3 penetrate through the fourth openings 42 and then are connected to the conductive sheet (not shown), and the battery cells 3 are connected in series or in parallel through the conductive sheet (not shown). In some embodiments, the first circuit board 4 is configured to control charging and discharging of the plurality of battery cells 3, and optionally, the first circuit board 4 includes a BMS board.

In some embodiments, referring to fig. 2, the battery pack 100 further includes a second circuit board 5, the second circuit board 5 is located in the first space 11s, the second circuit board 5 is disposed on a surface of the first circuit board 4 away from the battery cell 3, and the second circuit board 5 is electrically connected to the first circuit board 4. The first circuit board 4 is disposed between the accommodating portion 31 and the second circuit board 5 in the first direction L1.

In some embodiments, referring to fig. 4, 5 and 6, the first insulating member 7 wraps the second circuit board 5. After the second circuit board 5, the first circuit board 4 and the plurality of cells 3 are placed in the first space 11s, the first bracket 1 is inverted, and then the flowable resin is injected into the first space 11s, and the flowable resin is cured in the first space 11s to form the first insulating member 7 wrapping the second circuit board 5, the first circuit board 4, the tab 32 and the first sealing portion 312. The battery cell 3, and the first circuit board 4 and the second circuit board 5 are fixed and protected by the first insulating member 7. The first insulating member 7 is formed by setting a flowing resin in the first support 1 and then curing the resin, the first insulating member 7 is arranged in the first space 11s of the first support 1, and the first circuit board 4, the second circuit board 5 and a part of the structure of the battery cell 3 are wrapped and fixed, so that the movement of the first circuit board 4, the second circuit board 5 and the battery cell 3 is limited, and foreign matters such as water are prevented from entering the first space 11 s. Optionally, the first insulating member 7 includes a potting adhesive. Alternatively, the first insulating member 7 is formed by setting a flowable resin in the first space 11s by an injection molding process and then curing the resin.

In some embodiments, referring to fig. 2, the second circuit board 5 is used for controlling a power unit of an external device using the battery pack 100, and the like. In some embodiments, the second circuit board 5 is connected with a wire 51 for connecting with an external device, thereby controlling a power device and the like of the external device.

In some embodiments, referring to fig. 2, 6 and 7, the second circuit board 5 includes an electronic component 52, the first circuit board 4 is provided with a second opening 41, an end of the electronic component 52 away from the second circuit board 5 passes through the second opening 41 in a direction opposite to the first direction L1, and the electronic component 52 is at least partially disposed between the first sealing edge portions 312 of the adjacent battery cells 3. Optionally, the electronic component 52 is at least partially disposed in the first concave portion 3111s or the second concave portion 3112s of one of the battery cells 3. Optionally, in two adjacent battery cells 3, the first concave portion 3111s of one battery cell 3 and the second concave portion 3112s of the other battery cell 3 form a third space 3121, and the electronic component 52 is partially accommodated in the third space 3121. The battery element 52 utilizes the gap between the battery cells 3, which is beneficial to reducing the size of the battery pack and improving the capacity of the battery pack. Optionally, the electronic component 52 is disposed on a surface of the second circuit board 5 facing the battery cell 3.

The second opening 41 and the electronic component 52 cooperate to facilitate the mounting of the first circuit board 4 and the second circuit board 5.

Referring to fig. 2 and 7, the conductive member 6 is disposed on the first circuit board 4, the tabs 32 of the plurality of cells 3 are electrically connected to the conductive member 6, the second circuit board 5 is disposed with a third opening 53, and the conductive member 6 passes through the third opening 53 and is electrically connected to the second circuit board 5. Optionally, the conductive member 6 passes through the third opening 53 and is soldered to the second circuit board 5.

In some embodiments, the tabs 32 of the stacked multiple battery cells 3 may be connected to the conductive device 6, for example, the multiple battery cells 3 may be connected to form a total positive electrode (not shown) and a total negative electrode (not shown), and the conductive device 6 may include two conductive devices, one of which is connected to the total positive electrode (not shown) and the other of which is connected to the total negative electrode (not shown). In some embodiments, the battery pack 100 includes a collecting harness (not shown) for collecting the battery cells 3, and the conductive member 6 is connected to the collecting harness (not shown), for example, the collecting harness (not shown) collects the current of the battery cells 3.

Referring to fig. 1 and fig. 2, the battery pack 100 includes a second insulating member 8, and the second insulating member 8 covers a portion of the battery cell 3 exposed between the first bracket 1 and the second bracket 2, so as to protect the battery cell 3 in the battery pack 100 from external devices. Optionally, the second insulator 8 comprises foam.

In some embodiments, referring to fig. 2, the second bracket 2 is provided with a first opening 22 communicating with the second space 21, the battery pack 100 includes a third insulating member 9, the third insulating member 9 is provided on a surface of the second bracket 2 away from the battery cell 3, and the third insulating member 9 covers the first opening 22, so as to protect the battery cell 3 in the battery pack 100 from external equipment at the first opening 22. Optionally, the third insulation 9 comprises foam. In some embodiments, referring to fig. 2, along the second direction L2, the second support 2 is provided with a plurality of third recesses 23, the third recesses 23 are communicated with the second space 21, the third recesses 23 are used for accommodating the battery cells 3, a battery cell 3 is accommodated in one of the third recesses 23, and the third recesses 23 are provided to enhance the support of the second support 2 on the battery cell 3. Optionally, the concave portion 23 is a contour structure matched with the battery cell 3.

Embodiments of an electrical device 200 are also provided in the embodiments of the present application, as shown in fig. 8 and 9, the electrical device 200 includes a battery compartment 10 and a battery pack 100. For the specific structure and function of the battery pack 100, reference may be made to the above embodiments, and details are not repeated here. The battery compartment 10 has a fourth space 10s, and the battery pack 100 is accommodated in the fourth space 10 s. In the electric device 200, the battery compartment 10 can serve as a housing of the battery pack 100, and protecting the battery pack 100 improves the space utilization rate of the battery compartment 10.

The electric device 200 further includes a functional module 20, please refer to fig. 9 and 12, the functional module 20 is accommodated in the fourth space 10s, the functional module 20 is stacked with the battery pack 100, and the functional module 20 is electrically connected with the battery pack 100. The battery pack 100 can be realized to provide power for the electric device 200 through the functional module 20.

The functional module 20 and the second circuit board 5 are connected by a wire 51. Alternatively, the second circuit board 5 may be used to control the functional module 20.

In some embodiments, referring to fig. 9, the battery compartment 10 includes a first top wall 101, a first side wall 102, and a first bottom wall 103, the first top wall 101 and the first bottom wall 103 are both connected to the first side wall 102, and the first top wall 101, the first side wall 102, and the first bottom wall 103 together enclose a fourth space 10 s. Optionally, the first sidewall 102 includes four walls.

In some embodiments, the powered device 200 includes a scooter 200s, the frame 200s1 of the scooter 200s includes a battery compartment 10, the scooter 200s includes a front wheel 30 and a rear wheel 40, the front wheel 30 and the rear wheel 40 are respectively disposed at two ends of the frame 200s 1. In use, a user stands on the first top wall 101. The scooter 200s uses the frame 200s1 as the battery compartment 10, which is beneficial to further improving the space utilization rate of the scooter 200 s.

In some embodiments, the electric device 200 may also be an unmanned aerial vehicle, a sweeping robot, an energy storage device, a two-wheeled electric vehicle, or the like, without limitation.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. The above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims (10)

1. The utility model provides a battery pack, includes the electric core of a plurality of superpositions, the electric core includes electrode subassembly, packaging shell and utmost point ear, the packaging shell include the portion of holding and certainly the outside first edge sealing portion that extends the formation of portion of holding, electrode subassembly accept in the portion of holding, the one end of utmost point ear with electrode subassembly is connected, the other end of utmost point ear stretches out from first edge sealing portion packaging shell, its characterized in that, battery pack still includes:

the battery comprises a first bracket, a second bracket and a plurality of battery cores, wherein the first bracket is provided with a first space, and at least part of tabs of the battery cores are arranged in the first space;

and the first insulating piece is formed by arranging resin in the first space and then curing, and wraps the part of the tab extending out of the packaging shell.

2. The battery pack according to claim 1,

the battery pack further comprises a second support, the first support and the second support are arranged at intervals along the first direction, a second space is formed in the second support, and at least part of the plurality of battery cells are arranged in the second space.

3. The battery pack of claim 2, further comprising a first circuit board, wherein the first circuit board is accommodated in the first space, the first circuit board is electrically connected to the plurality of battery cells, and the first insulating member wraps the first circuit board.

4. The battery pack according to claim 3, further comprising a second circuit board electrically connected to the first circuit board, wherein the second circuit board is disposed in the first space, the second circuit board is disposed on a side of the first circuit board away from the battery cell, and the first insulating member covers the second circuit board.

5. The battery pack according to claim 2, wherein the first insulating member wraps the first sealing edge portion.

6. The battery pack of claim 4, wherein the second circuit board comprises an electronic component, the first circuit board is provided with a second opening, and the electronic component is at least partially located between the first sealing edge parts of two adjacent battery cells after passing through the second opening.

7. The battery pack of any of claims 2-6, further comprising a second insulator covering a portion of the cells between the first and second brackets.

8. The battery pack according to any one of claims 2 to 6, wherein the second bracket is provided with a first opening communicating with the second space, and the battery pack further comprises a third insulating member provided on a side of the second bracket away from the battery cell, the third insulating member covering the first opening.

9. The battery pack according to any one of claims 1 to 6, wherein the first insulating member comprises a potting adhesive, or is formed by a molding process in which a flowable resin is disposed in the first space and then cured.

10. An electrical device, comprising:

the battery pack according to any one of claims 1 to 9;

the battery compartment is provided with a fourth space, and the battery pack is contained in the fourth space.

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