A battery pack and an electric device

Abstract

Embodiments of the present application relate to a battery pack and an electric device. The battery pack includes a plurality of stacked battery cells. Each battery cell includes an electrode assembly, an encapsulation shell, and a tab. The electrode assembly is received in the encapsulation shell. One end of the tab is connected to the electrode assembly, and the other end of the tab extends out of the encapsulation shell. The battery pack further includes a first support and a first insulating member. The first support is provided with a first space. The tabs of the plurality of battery cells are at least partially disposed in the first space. The first insulating member is formed by curing resin disposed in the first space. The first insulating member wraps the portion of the tabs extending out of the encapsulation shell. The tabs of the plurality of battery cells in the battery pack are at least partially disposed in the first space. The first insulating member is disposed in the first space. The first insulating member wraps the portion of the tabs extending out of the encapsulation shell. The battery pack has a simple structure and occupies a small space. The first support protects at least part of the tabs of the plurality of battery cells, reducing damage between the battery cells and external devices due to collisions and the like.

Description

TECHNICAL FIELD

[0001] The embodiments of the present application relate to the technical field of battery. BACKGROUND

[0002] The electric core is a device that converts external energy into electric energy and stores it inside, so as to supply power to external power equipment (such as portable electronic equipment, etc.) at the required time. At present, the electric core is widely used in unmanned aerial vehicles, mobile phones, tablets, notebook computers and other power equipment. Generally, in order to improve the power supply capacity of the electric core, a plurality of electric cores are stacked, and then a battery pack is formed for use by the power equipment.

[0003] The applicant of the present application found that the structure of the battery pack is complex and occupies a large space during the implementation of the present application. SUMMARY

[0004] In view of the above problems, the embodiments of the present application provide a battery pack and a power equipment, which improve the problem of complex structure of the battery pack.

[0005] According to one aspect of the embodiments of the present application, a battery pack is provided, which comprises an electrode assembly, an encapsulation shell, a tab, a first support and a first insulating piece. The electrode assembly is accommodated in the encapsulation shell, one end of the tab is connected with the electrode assembly, the other end of the tab extends out of the encapsulation shell, the first support is provided with a first space, and the tabs of the plurality of electric cores are at least partially arranged in the first space. The first insulating piece is formed by arranging resin in the first space and then solidifying, and the first insulating piece wraps the part of the tab extending out of the encapsulation shell.

[0006] The battery pack of the present application protects the electric cores through the first support and the first insulating piece, the tabs of the plurality of electric cores are at least partially arranged in the first space, so that the battery pack of the present application occupies a small space and can protect the electric cores, and the electric cores and another electric core, and the electric cores and external equipment are not easily damaged due to collision and the like.

[0007] In an optional manner, the battery pack further comprises a second support, the first support and the second support are arranged at intervals along a first direction, the second support is provided with a second space, and the plurality of electric cores are at least partially arranged in the second space; and the plurality of electric cores are partially located between the second support and the first support. The second support and the first support are arranged at intervals, which reduces the space occupied by the battery pack, the battery pack can also dissipate heat through the space between the second support and the first support, and the battery pack has good heat dissipation performance.

[0008] In an alternative, the battery pack further comprises a first circuit board, the first circuit board is accommodated in the first space, the first circuit board is electrically connected with the plurality of battery cells, and the first insulation member wraps the first circuit board. The first circuit board electrically connected with the battery cells is also wrapped by the first insulation member, and the relative movement between the battery cells and the first circuit board is not prone to occur.

[0009] In an alternative, the battery pack further comprises a second circuit board electrically connected with the first circuit board, the second circuit board is arranged in the first space, the second circuit board is arranged on the side of the first circuit board away from the battery cells, and the first insulation member wraps the second circuit board. The second circuit board electrically connected with the first circuit board is also wrapped by the first insulation member, and the relative movement between the battery cells and the first circuit board is not prone to occur.

[0010] In an alternative, the packaging shell comprises a receiving portion and a first sealing edge portion extending outward from the receiving portion, the electrode assembly is accommodated in the receiving portion, and the other end of the tab extends out of the first sealing edge portion and is electrically connected with the first circuit board.

[0011] In an alternative, the receiving portion comprises a third side wall and a fourth side wall, the third side wall is connected with the first sealing edge portion, the fourth side wall is connected with the first sealing edge portion, and the third side wall and the fourth side wall are arranged on opposite sides of the first sealing edge portion. The first sealing edge portion and the third side wall form a first recess, and the first sealing edge portion and the fourth side wall form a second recess.

[0012] In an alternative, the first recess is substantially L-shaped, and the second recess is substantially L-shaped.

[0013] In an alternative, the first sealing edge portion is arranged at the center position of the receiving portion, and the length of the third side wall and the length of the fourth side wall are substantially the same in the direction of stacking the plurality of battery cells.

[0014] In an alternative, the first sealing edge portion is arranged at other positions of the receiving portion, and the length of the third side wall and the length of the fourth side wall are not the same in the direction of stacking the plurality of battery cells.

[0015] In an alternative, the receiving portion further extends outward to form a second sealing edge portion and a third sealing edge portion, the second sealing edge portion and the third sealing edge portion are arranged oppositely, the third side wall, the fourth side wall and the first sealing edge portion are connected with the second sealing edge portion, and the third side wall, the fourth side wall and the first sealing edge portion are connected with the third sealing edge portion.

[0016] In an alternative, the first insulation member wraps the first sealing edge portion. The first sealing edge portion is protected by the first insulation member, and the structure of the battery pack is stable.

[0017] In an optional mode, the second circuit board comprises an electronic component, and the first circuit board is provided with a second opening, and the electronic component is located at least partially between the first edge sealing portions of two adjacent battery cells after passing through the second opening.

[0018] In an optional mode, the electronic component is located partially in the first recess portion after passing through the second opening.

[0019] In an optional mode, the electronic component is located partially in the second recess portion after passing through the second opening.

[0020] In an optional mode, the first recess portion of one of the two adjacent battery cells and the second recess portion of the other battery cell form a third space, and the electronic component is partially accommodated in the third space.

[0021] Optionally, the electronic component has a distance from the battery cell after passing through the second opening in the first direction.

[0022] Optionally, the electronic component is located at least partially between the first edge sealing portions of two adjacent battery cells after passing through the second opening.

[0023] Optionally, the plurality of battery cells are stacked in the second direction, and the electronic component is located at least partially between the first edge sealing portion of one of the plurality of stacked battery cells and the first support after passing through the second opening.

[0024] In an optional mode, the battery pack further comprises a conductive member, the conductive member is arranged on the first circuit board, the tab of the plurality of battery cells is electrically connected with the conductive member, and the second circuit board is provided with a third opening, and the conductive member passes through the third opening to be connected with the second circuit board.

[0025] In an optional mode, by arranging the conductive member and the third opening, the assembly of the second circuit board and the first circuit board is facilitated.

[0026] In an optional mode, the battery pack further comprises a second insulating member, and the second insulating member covers the portion of the battery cell between the first support and the second support. By arranging the second insulating member, the collision of the battery cell with external equipment can be buffered.

[0027] In an optional mode, the second insulating member comprises foam.

[0028] In an optional mode, the second support is provided with a first opening communicating with the second space, and the battery pack further comprises a third insulating member, the third insulating member is arranged on the side of the second support away from the battery cell, and the third insulating member covers the first opening. By arranging the third insulating member, the collision of the battery cell with external equipment can be buffered.

[0029] In an optional mode, the third insulating member comprises foam.

[0030] In an alternative way, the first insulating member comprises potting glue, or the first insulating member is formed by solidifying resin flowing in the first space through an injection molding process.

[0031] According to an aspect of the embodiments of the present application, a battery pack is provided. The battery pack comprises: a plurality of battery cells; a first support configured to support the plurality of battery cells; a first space configured to accommodate at least part of the plurality of battery cells; and a first insulating member configured to be disposed in the first space and to wrap at least part of the plurality of battery cells.

[0032] According to an aspect of the embodiments of the present application, a battery pack is provided. The battery pack comprises: a plurality of battery cells; a first support configured to support the plurality of battery cells; a first space configured to accommodate at least part of the plurality of battery cells; and a first insulating member configured to be disposed in the first space and to wrap at least part of the plurality of battery cells.

[0033] According to an aspect of the embodiments of the present application, a battery pack is provided. The battery pack comprises: a plurality of battery cells; a first support configured to support the plurality of battery cells; a first space configured to accommodate at least part of the plurality of battery cells; and a first insulating member configured to be disposed in the first space and to wrap at least part of the plurality of battery cells.

[0034] According to an aspect of the embodiments of the present application, a battery pack is provided. The battery pack comprises: a plurality of battery cells; a first support configured to support the plurality of battery cells; a first space configured to accommodate at least part of the plurality of battery cells; and a first insulating member configured to be disposed in the first space and to wrap at least part of the plurality of battery cells.

[0035] According to an aspect of the embodiments of the present application, a battery pack is provided. The battery pack comprises: a plurality of battery cells; a first support configured to support the plurality of battery cells; a first space configured to accommodate at least part of the plurality of battery cells; and a first insulating member configured to be disposed in the first space and to wrap at least part of the plurality of battery cells. BRIEF DESCRIPTION OF DRAWINGS

[0036] One or more embodiments are illustrated by way of example in the figures that are part of this document, and which illustrate by way of example the principles of the embodiments. The same reference numbers in different drawings represent the same elements or the same concepts in the embodiments.

[0037] Figure 1 is a partial structure diagram of the battery pack provided by the embodiments of the present application;

[0038] Figure 2 is an exploded diagram of the battery pack provided by the embodiments of the present application;

[0039] Figure 3 is a diagram of the battery cell provided by the embodiments of the present application;

[0040] Figure 4FIG. 1 is a schematic diagram of a battery pack provided by an embodiment of the present application;

[0041] Figure 5 FIG. 2 is a schematic diagram of a battery pack provided by an embodiment of the present application; Figure 4 FIG. 3 is a sectional view along the BB line of FIG. 2;

[0042] Figure 6 FIG. 4 is a schematic diagram of a battery pack provided by an embodiment of the present application; Figure 5 FIG. 5 is an enlarged view of the A portion of FIG. 4;

[0043] Figure 7 FIG. 6 is a partial sectional view of a partial structure of a battery pack provided by an embodiment of the present application;

[0044] Figure 8 FIG. 7 is a schematic diagram of an electrical device provided by an embodiment of the present application;

[0045] Figure 9 FIG. 8 is an exploded schematic diagram of an electrical device provided by an embodiment of the present application;

[0046] Figure 10 FIG. 9 is a schematic diagram of a scooter provided by an embodiment of the present application;

[0047] Figure 11 FIG. 10 is a partial exploded schematic diagram of a scooter provided by an embodiment of the present application;

[0048] Figure 12 FIG. 11 is a schematic diagram of a functional module connected to a battery pack provided by an embodiment of the present application. DETAILED DESCRIPTION

[0049] For the purpose of promoting an understanding of the principles of the application, the application will be described below in greater detail with reference to the accompanying drawings and specific embodiments. It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or one or more intervening elements can be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements can be present. The terms "vertical", "horizontal", "left", "right", "inner", "outer", and similar terms as used in this specification are for the purpose of illustration only.

[0050] Unless otherwise defined, all technical and scientific terms used in this specification 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 application herein is for describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0051] Please refer to Figure 1 , Figure 2 and Figure 3The battery pack 100 comprises a plurality of stacked battery cells 3, a first support 1 and a first insulation member 7. The battery cell 3 comprises an electrode assembly (not shown), an encapsulation shell 31 and a tab 32. The electrode assembly is accommodated in the encapsulation shell 31, one end of the tab 32 is connected to the electrode assembly, and the other end of the tab 32 extends out of the encapsulation shell 31. The first support 1 is provided with a first space 11s, at least part of the tab 32 of the battery cell 3 extending out of the encapsulation shell 31 is arranged in the first space 11s, the first insulation member 7 is accommodated in the first space 11s, the first insulation member 7 wraps the part of the tab 32 extending out of the encapsulation shell, and the first insulation member 7 is formed by arranging resin in the first space 11s and curing the resin. The plurality of battery cells 3 are protected by the first support 1 and the first insulation member 7.

[0052] In some embodiments, the first insulation member 7 comprises potting glue.

[0053] In some embodiments, the first insulation member 7 is formed by arranging flowing resin in the first space 11s and curing the resin by an injection molding process.

[0054] In some embodiments, referring to Figure 2 , Figure 4 and Figure 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, and the four second side walls 12 and the second top wall 11 enclose the first space 11s. After the plurality of battery cells 3 are placed in the first space 11s, the first support 1 is inverted, and flowing resin is injected into the first space 11s. The flowing resin is cured to form the first insulation member 7 wrapping the tab 32 of the battery cell 3, and the first insulation member 7 is arranged in the gap between the tab 32 and the first support 1. By injecting the flowing resin after inverting the first support 1, the amount of flowing resin injected can be easily controlled, and whether the curing is complete can be easily observed during the manufacturing process.

[0055] Referring to Figure 1 and Figure 2 , the battery pack 100 further comprises a second support 2, and the second support 2 and the first support 1 are oppositely arranged along a first direction L1. The second support 2 is provided with a second space 21. The plurality of battery cells 3 are partially arranged in the first space 11s, and the plurality of battery cells 3 are at least partially arranged in the second space 21. Along the first direction L1, the second support 2 and the first support 1 are spaced apart by a first distance D, and the battery cells 3 are partially located outside the second support 2 and the first support 1. This is conducive to the heat generated by the battery cells 3 being dissipated from the space between the first support 1 and the second support 2, and is conducive to improving the heat dissipation of the battery pack 100.

[0056] Referring to Figure 2 and Figure 3In some embodiments, the packaging shell 31 of the battery cell 3 includes a receiving portion 311 and a first sealing portion 312 extending outward from the receiving portion 311, and the other end of the tab 32 extends from the first sealing portion 312.

[0057] The receiving portion 311 includes a third side wall 3111 connected to the first sealing portion 312 and a fourth side wall 3112 connected to the first sealing portion 312, and the third side wall 3111 and the fourth side wall 3112 are arranged on opposite sides of the first sealing portion 312. The first sealing portion 312 and the third side wall 3111 form a first recess 3111s, and the first sealing portion 312 and the fourth side wall 3112 form a second recess 3112s. The first recess 3111s is substantially L-shaped, and the second recess 3112s is substantially L-shaped. In this embodiment, the first sealing portion 312 is arranged at the center of the receiving 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 arranged at other positions of the receiving portion 311, and the length w1 of the third side wall 3111 and the length w2 of the fourth side wall 3112 are not the same along the stacking direction L2 of the plurality of battery cells 3.

[0058] The receiving portion 311 further extends outward to form a second sealing portion 313 and a third sealing portion 314, and the second sealing portion 313 and the third sealing portion 314 are arranged opposite to each other. The third side wall 3111, the fourth side wall 3112, and the first sealing portion 312 are all 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 all connected to the third sealing portion 314.

[0059] Please refer to Figure 2 and Figure 3 In some embodiments, the tab 32 of the battery cell 3, the first sealing portion 312 of the battery cell 3, and the part of the receiving portion 311 close to the first sealing portion 312 are all accommodated in the first space 11s, and the part of the receiving portion 311 of the battery cell 3 away from the tab 32 is accommodated in the second space 21.

[0060] In some embodiments, please refer to Figure 4 , Figure 5 and Figure 6 The first insulating member 7 wraps the first sealing portion 312.

[0061] In some embodiments, the first insulating member 7 also wraps the part of the receiving portion 311 close to the tab 32.

[0062] In some embodiments, please refer to Figure 2 , Figure 4 and Figure 5The battery pack 100 further comprises a first circuit board 4 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 support 1 is inverted, and then the flowing resin is injected into the first space 11s, and the flowing resin is cured in the first space 11s to form the first insulating member 7 wrapping the first circuit board 4, the tab 32, and the first edge sealing portion 312.

[0063] In some embodiments, referring to Figure 2 and Figure 7 The tabs 32 of the plurality of battery cells 3 are sequentially connected and then connected to the conductive member 6, the plurality of 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 a plurality, and the tabs 32 of the adjacent two battery cells 3 pass through the fourth openings 42 and are connected to the first circuit board 4. Optionally, the battery pack 100 comprises a conductive sheet (not shown) provided on the first circuit board 4, the tabs 32 of the adjacent two battery cells 3 pass through the fourth openings 42 and 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 used to control the charging and discharging of the plurality of battery cells 3, and optionally, the first circuit board 4 comprises a BMS board.

[0064] In some embodiments, referring to Figure 2 The battery pack 100 further comprises a second circuit board 5 located in the first space 11s, the second circuit board 5 is provided on a surface of the first circuit board 4 away from the battery cells 3, and the second circuit board 5 is electrically connected to the first circuit board 4. Along the first direction L1, the first circuit board 4 is located between the accommodating portion 31 and the second circuit board 5.

[0065] In some embodiments, referring to Figure 4 , Figure 5 and Figure 6The 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 battery cells 3 are placed in the first space 11s, the first support 1 is inverted, and the flowing resin is injected into the first space 11s, the flowing resin is solidified to form the first insulating member 7 which wraps the second circuit board 5, the first circuit board 4, the tab 32 and the first edge portion 312. The first insulating member 7 realizes the fixation and protection of the battery cells 3, the first circuit board 4 and the second circuit board 5. The first insulating member 7 is formed by the flowing resin which is solidified after being placed in the first space 11s of the first support 1. The first insulating member 7 is placed in the first space 11s of the first support 1 to fix the part of the structure of the first circuit board 4, the second circuit board 5 and the battery cells 3, limit the movement of the first circuit board 4, the second circuit board 5 and the battery cells 3, and reduce the foreign matter, such as water, from entering the first space 11s. Optionally, the first insulating member 7 comprises potting glue. Optionally, the first insulating member 7 is formed by the flowing resin which is solidified after being placed in the first space 11s by the injection molding process.

[0066] In some embodiments, referring to Figure 2 , the second circuit board 5 is used to control the power device and the like of the external device using the battery pack 100. In some embodiments, the second circuit board 5 is connected with the wire 51 for connecting with the external device, so as to control the power device and the like of the external device.

[0067] In some embodiments, referring to Figure 2 , Figure 6 and Figure 7 , the second circuit board 5 comprises the electronic element 52, the first circuit board 4 is provided with the second opening 41, the electronic element 52 passes through the second opening 41 away from one end of the second circuit board 5 in the direction opposite to the first direction L1, and the electronic element 52 is at least partially disposed between the first edge portions 312 of the adjacent battery cells 3. Optionally, the electronic element 52 is at least partially disposed in the first recess portion 3111s or the second recess portion 3112s of one of the battery cells 3. Optionally, the first recess portion 3111s of one of the battery cells 3 and the second recess portion 3112s of the other battery cell 3 of the two adjacent battery cells 3 form a third space 3121, and the electronic element 52 is partially accommodated in the third space 3121. The electronic element 52 utilizes the gap between the battery cells 3, which is beneficial to reduce the size of the battery pack and improve the capacity of the battery pack. Optionally, the electronic element 52 is disposed on the surface of the second circuit board 5 facing the battery cells 3.

[0068] The second opening 41 and the electronic element 52 cooperate to make the installation of the first circuit board 4 and the second circuit board 5 more convenient.

[0069] Referring to Figure 2 and Figure 7The conductive piece 6 is arranged on the first circuit board 4, the tab 32 of each of the plurality of battery cells 3 is electrically connected with the conductive piece 6, the second circuit board 5 is provided with a third opening 53, and the conductive piece 6 is electrically connected with the second circuit board 5 after passing through the third opening 53. Optionally, the conductive piece 6 is welded with the second circuit board 5 after passing through the third opening 53.

[0070] In some embodiments, the tabs 32 of the plurality of battery cells 3 are connected and then connected with the conductive piece 6, for example, the plurality of battery cells 3 are connected to form a total positive electrode (not shown) and a total negative electrode (not shown), and the conductive piece 6 can include two conductive pieces, one of which is connected with the total positive electrode (not shown) and the other of which is connected with the total negative electrode (not shown). In some embodiments, the battery pack 100 includes a collection harness (not shown) for collecting the battery cells 3, and the conductive piece 6 is connected with the collection harness (not shown), for example, the collection harness (not shown) collects the current of the battery cells 3.

[0071] Referring to Figure 1 and Figure 2 , the battery pack 100 includes a second insulating piece 8, the second insulating piece 8 covers the part of the battery cell 3 exposed between the first support 1 and the second support 2, thereby achieving protection between the battery cell 3 in the battery pack 100 and external equipment. Optionally, the second insulating piece 8 includes foam.

[0072] In some embodiments, referring to Figure 2 , the second support 2 is provided with a first opening 22 communicating with the second space 21, and the battery pack 100 includes a third insulating piece 9 arranged on a surface of the second support 2 away from the battery cell 3, the third insulating piece 9 covers the first opening 22, thereby achieving protection between the battery cell 3 in the battery pack 100 and external equipment at the first opening 22. Optionally, the third insulating piece 9 includes foam. In some embodiments, referring to Figure 2 , along the second direction L2, the second support 2 is provided with a plurality of third recesses 23, the third recesses 23 communicate with the second space 21, and the third recesses 23 are used for accommodating the battery cells 3, one battery cell 3 is accommodated in one third recess 23. By arranging the third recesses 23, on the one hand, the support of the second support 2 on the battery cells 3 can be strengthened. Optionally, the recesses 23 are a profiling structure matched with the battery cells 3.

[0073] The application also provides an embodiment of a power consumption device 200, as shown in Figure 8 and Figure 9 , the power consumption device 200 includes a battery compartment 10 and a battery pack 100. For the specific structure and functions of the battery pack 100, please refer to the above embodiments, which will not be repeated here. The battery compartment 10 is provided with a fourth space 10s, and the battery pack 100 is accommodated in the fourth space 10s. In the power consumption device 200, the battery compartment 10 can serve as the shell of the battery pack 100, and the protection of the battery pack 100 improves the space utilization of the battery compartment 10.

[0074] The power-using device 200 further comprises a functional module 20, please refer to Figure 9 and Figure 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 provide power for the power-using device 200 through the functional module 20.

[0075] The functional module 20 and the second circuit board 5 are connected through the wire 51. Optionally, the second circuit board 5 can be used to control the functional module 20.

[0076] In some embodiments, please refer to Figure 9 The battery compartment 10 comprises 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 connected with the first side wall 102, and the first top wall 101, the first side wall 102 and the first bottom wall 103 jointly enclose the fourth space 10s. Optionally, the first side wall 102 comprises four walls.

[0077] In some embodiments, the power-using device 200 comprises a scooter 200s, the frame 200s1 of the scooter 200s comprises the battery compartment 10, and the scooter 200s comprises front wheels 30 and rear wheels 40, which are respectively arranged at two ends of the frame 200s1. When in use, the 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 improve the space utilization of the scooter 200s.

[0078] In some embodiments, the power-using device 200 can also be a drone, a sweeping robot, an energy storage device, a two-wheeled electric vehicle, etc., without limitation.

[0079] It should be noted that the specification and drawings of the present application give the preferred embodiments of the present application, but the present application can be realized in many different forms, and is not limited to the embodiments described in the specification. These embodiments are not additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. The above technical features continue to be combined with each other, forming various embodiments not listed above, which are all considered to be within the scope of the present application. Furthermore, those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the present application.

Claims

1. A battery pack comprising a plurality of stacked battery cells, each battery cell including an electrode assembly, a package housing, and tabs, the electrode assembly being housed in the package housing, one end of each tab being connected to the electrode assembly, and the other end of each tab extending from the package housing, characterized in that, The battery pack also includes: A first support is provided with a first space, and at least part of the tabs of the plurality of battery cells are provided in the first space; The first insulating element is formed by curing resin after it is placed in the first space. The first insulating element covers the portion of the electrode extending out of the encapsulation shell. The battery pack also includes a first circuit board, which is housed in the first space and is electrically connected to the plurality of battery cells. The first insulating member wraps the first circuit board. The battery pack also includes a second circuit board electrically connected to the first circuit board. The second circuit board is disposed in the first space and on the side of the first circuit board away from the battery cell. The first insulating member wraps around the second circuit board. The encapsulation shell includes a receiving portion and a first sealing portion extending outward from the receiving portion. The electrode assembly is housed in the receiving portion, and the other end of the electrode tab extends out from the first sealing portion and is electrically connected to the first circuit board. The second circuit board includes electronic components, and the first circuit board has a second opening, through which the electronic components are located at least partially between the first sealing portions of two adjacent battery cells.

2. The battery pack according to claim 1, characterized in that, The battery pack also includes a second bracket, the first bracket and the second bracket are spaced apart along a first direction, the second bracket has a second space, and the plurality of battery cells are at least partially disposed in the second space.

3. The battery pack according to claim 1, characterized in that, The first insulating component wraps around the first sealing edge.

4. The battery pack according to any one of claims 1 or 3, characterized in that, The battery pack also includes a conductive element disposed on the first circuit board, and the tabs of the plurality of battery cells are electrically connected to the conductive element. The second circuit board has a third opening, and the conductive element passes through the third opening and connects to the second circuit board.

5. The battery pack according to claim 2, characterized in that, The battery pack also includes a second insulating element that covers the portion of the battery cell located between the first and second supports.

6. The battery pack according to claim 2, characterized in that, The second bracket has a first opening that connects to the second space. The battery pack also includes a third insulating member disposed on the side of the second bracket away from the battery cell, and the third insulating member covers the first opening.

7. The battery pack according to any one of claims 1-3, characterized in that, The first insulating component includes potting compound, or the first insulating component is formed by injection molding after the flowing resin is placed in the first space and then cured.

8. An electrical appliance, characterized in that, include: The battery pack as described in any one of claims 1-7; The battery compartment has a fourth space, in which the battery pack is housed.

9. The electrical equipment according to claim 8, characterized in that, The electrical equipment also includes a functional module, which is housed in the fourth space and is electrically connected to the battery pack.

10. The electrical equipment according to claim 8, characterized in that, The electrical equipment includes a scooter, which includes a frame and front and rear wheels located at opposite ends of the frame, with the battery compartment located between the front and rear wheels.

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