WO2022228567A1

WO2022228567A1 - Battery pack and power consuming device

Info

Publication number: WO2022228567A1
Application number: PCT/CN2022/090465
Authority: WO
Inventors: 李坤龙
Original assignee: 东莞新能安科技有限公司
Priority date: 2021-04-29
Filing date: 2022-04-29
Publication date: 2022-11-03

Abstract

The embodiments of the present application relate to a battery pack and a power consuming device. The battery pack comprises a battery compartment and a battery module. The battery compartment is provided with a first space, a first opening, a second opening, and a channel. The channel is respectively in communication with the first opening and the second opening. The battery module is provided in the first space. By means of providing a channel, heat that is generated while a battery module is operating is brought out, such that the performance of a battery pack is improved.

Description

A battery pack and electrical equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed on April 29, 2021 with the application number 202110474873.6, the invention title is "A battery pack and electrical equipment", and the application number 202110474899.0, the invention title is The priority of the Chinese patent application for "A Battery Pack and Electrical Equipment", the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of batteries, and in particular, to a battery pack and electrical equipment.

Background technique

Scooters are one of the products of skateboarding. The scooter is suitable for a variety of age groups because of its moderate speed, easy to learn and easy to operate, and has a braking device. For example, for commuters, using a scooter on some short-distance routes is undoubtedly a trendy, fun and practical way. For example, for teenagers, scooters are even more addicting. Many teenagers are proud of owning a scooter, and scooters have a good exercise effect on the balance system of teenagers. Generally, scooters are equipped with battery modules.

In the process of realizing the present application, the applicant of the present application found that: at present, the battery module of the scooter generates heat during operation, and the accumulation of heat in the scooter can easily affect the performance of the scooter, and the user experience is not good.

SUMMARY OF THE INVENTION

In view of the above problems, embodiments of the present application provide a battery pack and an electrical device, so as to at least improve the heat dissipation performance of the battery module.

In one aspect of the present application, a battery pack is provided, including a battery compartment and a battery module. Wherein, the battery compartment is provided with a first space, a first opening, a second opening and a channel, and the channel communicates with the first opening and the second opening. The battery module is installed in the first space. By arranging the channel in the first space of the battery pack, the temperature of the battery module can be lowered, and the performance of the battery pack is good.

In an optional manner, the battery compartment includes a first top wall, a first side wall and a first bottom wall; the first top wall, the first side wall and the first bottom wall together form the In the first space, the first top wall and the first bottom wall are spaced apart along the first direction. The first opening is disposed on the first side wall. When the battery pack moves, the wind can enter the first space from the first opening and flow in the channel, so as to dissipate heat from the battery module in the first space and improve the heat dissipation effect of the battery pack.

In an optional manner, the first opening includes a first portion and a second portion, and the channel includes a first channel and a second channel. The first channel is located on the first top wall, and the first channel communicates with the first part and the second opening. The second channel is located on the first bottom wall, and the second channel communicates with the second part and the second opening. By arranging the first channel and the second channel in the battery compartment, the heat dissipation effect of the battery pack is improved.

In an optional manner, the first side wall includes a first wall, the first opening is disposed on the first wall, and an included angle between the first wall and the first bottom wall is an obtuse angle. As the battery pack moves, more wind can be directed into the channel. In addition, the angle between the first top wall and the first bottom wall is an obtuse angle, so it is difficult for the battery pack to enter the first space through the first opening when the battery pack is in use, and the battery module in the first space has a long service life.

In an optional manner, the included angle between the first portion and the first top wall is an obtuse angle, and an end of the first portion close to the first top wall faces the first top wall. When the wind blowing toward the first top wall is directed toward the first top wall, more wind can enter the channel from the first part, thereby improving the heat dissipation effect of the battery pack. In addition, the end of the first part close to the first top wall faces the first top wall. When foreign objects such as dust enter the first part, they will slide out of the battery compartment along the first part, and foreign objects such as dust cannot easily enter the first space from the first part.

In an optional manner, the included angle between the second portion and the first bottom wall is an obtuse angle. When the wind blown toward the first top wall is directed toward the first bottom wall, more wind can enter the channel from the second part, thereby improving the heat dissipation effect of the battery pack. In addition, the end of the second part close to the first bottom wall faces the first top wall. When foreign objects such as dust enter the second part, they will slide out of the battery compartment along the second part, that is, foreign objects such as dust are not easily removed from the second part. Enter the first space.

In an optional manner, the first bottom wall is further provided with a first through hole, and through the first through hole, it is convenient for the dirt in the first space to be discharged from the first through hole, and the battery in the first space can be discharged from the first through hole. Mods are less affected by dirt.

In an optional manner, the first through hole is communicated with the second channel, which is more convenient for the dirt in the first space to be discharged from the first through hole

In an optional manner, the first side wall includes a second wall, the second wall and the first wall are oppositely disposed along a second direction, and the second channel extends along the second direction L, Therefore, even if there is accumulated water in the first space, it can be discharged from the groove and the first through hole, the battery module is less eroded by dirt such as water, and the battery module has a long service life.

In an optional manner, the first top wall includes a first concave portion, the first concave portion is formed with the first channel, and the first bottom wall includes a second concave portion, the second concave portion is formed There is the second channel.

In an optional manner, the battery pack further includes a filter screen covering the first opening. By setting the filter screen, it is not easy for foreign objects such as dust to enter the first space, and the battery module in the first space has a long service life.

In an optional manner, the battery module includes a battery case and a plurality of cells, the battery case is provided with a second space, and the plurality of cells are stacked in the second space along the second direction . The battery case includes a first bracket and a second bracket, the first bracket and the second bracket are oppositely arranged along the third direction, the first bracket is provided with a first cavity, and the second bracket is provided with a first cavity. Two cavities, the second space includes the first cavity and the second cavity. The cell part is arranged in the second cavity, the cell part is arranged in the first cavity, and the tab is arranged in the first cavity. The first bracket and the second bracket may not completely accommodate the battery cells, that is, a part of the battery cells is exposed. The vacancies of the two brackets along the third direction can be used by other components of the battery pack, and the space utilization rate of the battery pack is high.

In an optional manner, the battery pack further includes a first insulating member, and the first insulating member is formed by setting resin in the first cavity and then curing. The waterproof and dustproof performance of the battery module.

In an optional manner, the battery pack further includes a first circuit board, the first circuit board is accommodated in the first cavity, and the first circuit board is electrically connected to the plurality of cells, The first insulating member wraps the first circuit board. The structure of the battery module is compact, the space occupied is small, the first circuit board electrically connected to the battery cell is wrapped by the first insulating member, and there is no gap between the battery core and the battery core and between the battery core and the first circuit board. Relative movement is easy to occur.

In an optional manner, the first circuit board is a BMS board.

In an optional manner, the battery pack further includes a second circuit board electrically connected to the first circuit board, the second circuit board is arranged in the first cavity, and the second circuit board is The board is arranged on the 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 and the first circuit board are stacked so as to realize rational utilization of the limited space in the battery compartment of the battery pack. The second circuit board that is electrically connected to the first circuit board is also wrapped by the first insulating member, so that relative movement between the cell and the cell, and between the cell and the first circuit board and the second circuit board is not easy.

In an optional manner, the battery core further includes an electrode assembly, an encapsulation case and a tab. The packaging case includes a receiving portion and a first edge sealing portion extending outward from the receiving portion, and the electrode assembly is disposed in the receiving portion. A portion of the accommodating portion is provided in the first cavity, and a portion of the accommodating portion is provided in the second cavity. One end of the tab is connected to the electrode assembly, and the other end of the tab protrudes from the first edge sealing portion along the third direction and is electrically connected to the first circuit board. The first insulating member wraps the portion of the encapsulation shell where the tabs extend, and the first insulating member wraps the first edge sealing portion. Through the first insulating member, the waterproof and dustproof performance of the battery module is excellent.

In an optional manner, the second circuit board includes electronic components, the first circuit board is provided with a fifth opening, and the electronic components are at least partially located in two adjacent two adjacent ones after passing through the fifth opening. between the first edge sealing portions of the battery cells.

In an optional manner, along the third direction, there is a gap between the first bracket and the second bracket, and a part of the accommodating portion is provided in the gap. That is, the part of the electrode assembly faces the vacancy, and the electrode assembly is dissipated through the vacancy, and the heat dissipation performance of the battery pack is good.

In an optional manner, the battery pack further includes a second insulating member, the second insulating member is located in the vacant position, and the second insulating member is in contact with the battery cell and the battery compartment, respectively. The vacancy is provided with a second insulating member, the collision between the cell and the inner surface of the first space is alleviated, and the cell is not easily damaged.

In an optional manner, the second bracket is provided with a sixth opening that communicates with the second cavity, so that the heat dissipation performance of the battery cell is good.

In an optional manner, the battery pack further includes a third insulating member, the third insulating member is disposed at the sixth opening, and the third insulating member is in contact with the battery cells and the battery compartment, respectively. catch. The collision between the cell and the inner surface of the first space is alleviated, and the cell is not easily damaged.

According to an aspect of the embodiments of the present application, an electrical device is provided, and the electrical device includes the above-mentioned battery pack.

In an optional manner, the electrical device includes a scooter, and the first opening is an air inlet along the traveling direction of the scooter. When the scooter is traveling, the wind enters the scooter from the first opening, which reduces the temperature of the battery module in the scooter, and the performance of the scooter is good.

The beneficial effects of the embodiments of the present application are as follows: a battery pack and electrical equipment are provided. The battery compartment of the battery pack is provided with a first space, the first space is used to accommodate the battery module, the inner surface of the first space is provided with a channel, and the battery A first opening and a second opening are arranged in the warehouse, wherein the first opening and the second opening are both communicated with the channel, so that the wind can enter the first space from the first opening, and act on the battery module along the channel, and the battery module works The heat generated during the time can be dissipated from the second opening, and the heat dissipation performance of the battery pack is good. When the battery pack is applied to an electrical device such as a scooter, the heat generated by the battery pack is not easy to accumulate, and the user experience is good.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute limitations of the embodiments, and elements with the same reference numerals in the drawings are denoted as similar elements, Unless otherwise stated, the figures in the accompanying drawings do not constitute a scale limitation.

1 is a schematic diagram of a battery pack provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of another direction of the battery pack provided by the embodiment of the present application

3 is a cross-sectional view along line P1P1 in FIG. 1 provided by an embodiment of the present application;

4 is an exploded schematic diagram of a battery pack provided by an embodiment of the present application;

5 is an exploded schematic diagram of a battery compartment provided by an embodiment of the present application;

6 is an enlarged schematic diagram of part A in FIG. 3 provided by an embodiment of the present application;

7 is a schematic diagram of a first bottom wall of a battery compartment provided by an embodiment of the present application;

8 is a schematic diagram of a battery module provided by an embodiment of the present application being connected with wires;

9 is a schematic diagram of a partial explosion of a battery pack provided by an embodiment of the present application;

10 is a schematic diagram of a battery cell provided by an embodiment of the present application;

11 is a schematic diagram of a battery module provided in an embodiment of the present application connected with a second insulating member and a third insulating member;

12 is a cross-sectional view along the P2P2 line in FIG. 11 provided by an embodiment of the present application;

13 is a schematic diagram of a connection relationship between a functional module and a battery module provided by an embodiment of the present application;

FIG. 14 is a schematic diagram of an electric scooter provided by an embodiment of the present application.

Detailed ways

In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element, or one or more intervening elements may be present therebetween. 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 may be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are for illustrative purposes only.

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 technical field belonging to this application. The terms used in the specification of the present application are only for the purpose of describing specific embodiments, and are not used to limit the present application. As used in this specification, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIGS. 1 to 3 , the battery pack 100 includes a battery compartment 1 and a battery module 2 . The battery compartment 1 is provided with a first space 11s, a first opening 111 and a second opening 121 . The battery compartment 1 is provided with a channel 12s, one end of the channel 12s communicates with the first opening 111, and the other end of the channel 12s communicates with the second opening 121. The battery module 2 is arranged in the first space 11s. The battery module 2 dissipates heat through the first opening 111 , the second opening 121 and the channel 12s , thereby reducing the temperature of the battery pack 100 and improving the performance of the battery pack 100 . In some embodiments, the first opening 111 is used as an air inlet, the second opening 121 is used as an air outlet, and the channel 12s is used as an air channel for air circulation.

Referring to FIGS. 3 , 4 and 5 , the battery compartment 1 includes a first top wall 11 , a first side wall 12 and a first bottom wall 13 . Both the first top wall 11 and the first bottom wall 13 are connected to the first side wall 12 . The first top wall 11, the first side wall 12 and the first bottom wall 13 together form a first space 11s. The first opening 111 is formed on the first side wall 12 .

The first side wall 12 has a first opening 111. When the battery pack 100 is installed in an external device, the external device moves, and the wind can enter the first space 11s from the first opening 111 and flow in the channel 12s, so as to prevent the first space The battery module 2 within 11s dissipates heat, and the heat dissipation effect is good.

In some embodiments, the first opening 111 includes a first portion 1111 and a second portion 1112 . The channel 12s includes a first channel 12s1 and a second channel 12s2.

In some embodiments, the first top wall 11 includes a first concave portion 112 , and the first concave portion 112 is formed with a first channel 12s1 , and the first channel 12s1 communicates with the first portion 1111 and the second opening 121 . The first bottom wall 13 includes a second concave portion 133 , and the second concave portion 133 is formed with a second channel 12s2, and the second channel 12s2 communicates with the second portion 1112 and the second opening 121, respectively. Optionally, along a direction opposite to the second direction L2, the first concave portion 112 extends to the end of the first top wall 11 to form the second opening 121 . Optionally, along a direction opposite to the second direction L2 , the second recess 133 extends to the end of the first bottom wall 13 to form the second opening 121 .

In some embodiments, the first side wall 12 is provided with a first wall 123 and a second wall 122 spaced along the second direction L2 , and the first opening 111 is provided in the first wall 123 . Optionally, the second opening 121 is provided on the second wall 122 (not shown). Optionally, the second opening 121 is provided on the first top wall 11 . Wherein, the second direction L2 is perpendicular to the first direction L1.

In some embodiments, the included angle between the first wall 123 and the first bottom wall 13 is an obtuse angle, which is beneficial to reduce the speed of the wind entering the channel 12s and reduce the influence of the wind on the battery pack 100 . In addition, when the battery pack 100 is in use, for example, rainwater cannot easily enter the first space 11s from the first opening 111 , and the battery module 2 in the first space 11s has a long service life.

In some embodiments, referring to FIGS. 3 and 6 , the first portion 1111 is disposed close to the first top wall 11 , and the second portion 1112 is disposed close to the first bottom wall 13 . The end of the first part 1111 close to the first top wall 11 faces the first top wall 11 , and the wind direction F1 is adjusted by the first part 1111 , which is beneficial to reduce the speed of the wind entering the first passage 12s1 and reduce the influence of the wind on the battery pack 100 . When foreign objects such as dust enter the first part 1111, under the action of gravity, the inclined first part 1111 facilitates the movement of foreign objects from the second part 1111 to the outside of the battery compartment 1, and restricts foreign objects such as dust from entering the first space 11s from the first part 1111 , thereby affecting the use of the battery module 2 .

In some embodiments, referring to FIG. 6 , the included angle between the second portion 1112 and the first bottom wall 11 is an obtuse angle, and one end of the second portion 1112 close to the first bottom wall 13 faces the first top wall 11 . The direction F1 is adjusted by the second part 1112 , which is beneficial to reduce the speed of the wind entering the second passage 12s2 and reduce the influence of the wind on the battery pack 100 . When foreign objects such as dust enter the second part 1112, under the action of gravity, the inclined second part 1112 facilitates the movement of foreign objects from the second part 1112 to the outside of the battery compartment 1, and restricts the entry of foreign objects such as dust from the second part 1112 into the second part 1112. A space 11s affects the use of the battery module 2 .

In some embodiments, please refer to FIG. 3 and FIG. 4 , the battery pack 100 includes a filter screen 5 , the filter screen 5 is arranged in the first space 11s , the filter screen 5 covers the first opening 111 , and foreign objects such as dust are blocked by the filter screen 5 , Further restricting the entry of dust and the like into the first space 11s is beneficial to prolong the service life of the battery module 2 .

Referring to FIG. 5 , the above-mentioned first channel 12s1 extends along the second direction L2. In some embodiments, the number of the first passages 12s1 is multiple, and the multiple first passages 12s1 are juxtaposed on the first bottom wall 13 along the third direction L3, wherein the third direction L3 is perpendicular to the second direction L2, and the third direction L3 is perpendicular to the second direction L2. The three directions L3 are perpendicular to the first direction L1. In some embodiments, the third direction L3 is parallel to the first bottom wall 13 .

Referring to FIG. 5 , the second channel 12s2 extends along the second direction L2. In some embodiments, the number of the second passages 12s2 is multiple, and the multiple second passages 12s2 are juxtaposed on the first bottom wall 13 along the third direction L3.

In some embodiments, please refer to FIG. 5 and FIG. 7 , the battery pack 100 includes a first through hole 131 penetrating the first bottom wall 13 , wherein the first through hole 131 communicates with the second channel 12s2 , which is beneficial to the first space 11s The foreign matter inside is discharged from the first through hole 131 , and the battery module 2 has a long service life. Optionally, the number of the first through holes 131 is multiple, and the multiple first through holes 131 are distributed in the multiple second channels 12s2, so as to improve the effect of the first through holes 131 for discharging foreign objects.

In some embodiments, please refer to FIG. 8 and FIG. 9 , the battery module 2 includes a battery case 21 and a plurality of cells 22 , the battery case 21 is provided with a second space 21s, and the plurality of cells 22 are stacked along the second direction L2 on the second space 21 s. Two space 21s. When the channel 12s extends along the second direction L2, the heat dissipation effect of the wind entering the first space 11s on the plurality of cells 22 is relatively uniform.

In some embodiments, please refer to FIG. 10 , the battery cell 22 includes an electrode assembly (not shown), an encapsulation shell 221 and a tab 222 , and the encapsulation shell 221 includes a accommodating portion 2211 and a first portion extending outward from the accommodating portion 2211 . In the edge sealing part 2212 , the electrode assembly is accommodated in the accommodating part 2211 , one end of the tab 222 is connected to the electrode assembly, and the other end of the tab 222 protrudes from the first edge sealing part 2212 . The other end of the tab 222 protrudes from the first edge sealing portion 2212 along the third direction L3. Each cell 22 has two tabs 222 that are electrically opposite.

The accommodating part 2211 includes a second side wall 2211a and a third side wall 2211b, the second side wall 2211a is connected with the first edge sealing part 2212, the third side wall 2211b is connected with the first edge sealing part 2212, the second side wall 2211a and The third side walls 2211b are disposed on opposite sides of the first edge sealing portion 2212 . The first edge portion 2212 and the second side wall 2211a form a third recess 2211c, the first edge portion 2212 and the third side wall 2211b form a fourth recess 2211d, the third recess 2211c is substantially L-shaped, and the fourth recess 2211d is substantially L-shaped L-shaped. In this embodiment, the first edge sealing portion 2212 is disposed at the center of the accommodating portion 2211, and along the second direction L2, the length w1 of the second side wall 2211a and the length w2 of the third side wall 2211b are substantially the same. In other embodiments, the first edge sealing portion 2212 is disposed at other positions of the accommodating portion 2211, and along the second direction L2, the length w1 of the second side wall 2211a and the length w2 of the third side wall 2211b are different.

The accommodating portion 2211 also extends outward to form a second edge sealing portion 313 and a third edge sealing portion 314. The second edge sealing portion 313 and the third edge sealing portion 314 are disposed opposite to each other. The second side wall 2211a, the third side wall 2211b and the The first edge sealing portion 2212 is all connected to the second edge sealing portion 313 , and the second side wall 2211 a , the third side wall 2211 b and the first edge sealing portion 2212 are all connected to the third edge sealing portion 314 .

In some embodiments, please refer to FIG. 9 , the battery case 21 includes a first bracket 211 and a second bracket 212 , the first bracket 211 and the second bracket 212 are oppositely disposed along the third direction L3 , and the first bracket 211 is provided with a first bracket 211 . The cavity 2111 and the second bracket 212 are provided with a second cavity 2121 , and the second space 21s includes a first cavity 2111 and a second cavity 2121 . The part of the accommodating part 2211 of the battery cell 22 is provided in the second cavity 2121 , the part of the accommodating part 2211 of the battery cell 22 is provided in the first cavity 2111 , and the tab 222 is provided in the first cavity 2111 . The battery module 2 further includes a first circuit board 23 , and the other end of the tab 222 protrudes from the first edge sealing portion 2212 and is electrically connected to the first circuit board 23 . The first circuit board 23 is stacked and electrically connected to the plurality of cells 22 along the third direction L3 . The first circuit board 23 is close to the tabs 222 , and the first circuit board 23 is accommodated in the first cavity 2111 . The second circuit board 4 is also accommodated in the first cavity 2111 . The second circuit board 4 is overlapped with a surface of the first circuit board 23 away from the battery cell 22 along the third direction L3. The second circuit board 4 is arranged on the side of the first circuit board 23 away from the battery cell. The board 4 is electrically connected to the first circuit board 23 .

Among them, the second circuit board 4 is used to control the functional module 3, the first circuit board 23 is used to control the charging and discharging of several battery cells 22, etc., the second circuit board 4 and the first circuit board 23 are stacked, Thus, rational utilization of the limited space in the battery compartment 1 of the battery pack 100 can be achieved.

Wherein, in some embodiments, the first circuit board 23 is a BMS board.

The tabs 222 of the plurality of cells 22 are respectively connected to the first circuit board 23 . In some embodiments, the second circuit board 4 is provided with a third opening 41 , the first circuit board 23 is provided with a fourth opening 231 , and the tabs 222 of the plurality of cells 22 are respectively connected to the first circuit board 23 at the fourth openings 231 . After passing through the first circuit board 23 , it is connected to the second circuit board 4 at the third opening 41 .

The number of the fourth openings 231 is the same as the number of the tabs 222 , or the number of the fourth openings 231 is two, which are respectively used to connect the two tabs 222 of the cells 22 with opposite electrical properties. Of course, the number of the third openings 41 is the same as the number of the tabs 222 , or the number of the fourth openings 231 is two, which are respectively used to connect the two tabs 222 of the cells 22 with opposite electrical properties. Of course, the number of the fourth openings 231 may be the same as the number of the tabs 222 , and the number of the third openings 41 is two.

In some embodiments, the tabs 222 of the battery cells 22 may be individually connected to the first circuit board 23 at the fourth opening 231 , or, after the tabs 222 of several battery cells 22 are connected, the fourth opening 231 is connected to the first circuit board 23.

In some embodiments, the tabs 222 of the cells 22 may be connected to the second circuit board 4 at the third opening 41 alone, or, after the tabs 222 of several cells 22 are connected, the tabs 222 of the cells 22 are connected to the third opening 41 is connected to the second circuit board 4.

In some embodiments, both the third opening 41 and the fourth opening 231 can limit the position of the tab 222 .

In some embodiments, please refer to FIG. 9 , the first circuit board 23 is further provided with a fifth opening 232 , the second circuit board 4 extends electronic components toward the direction of the first circuit board 23 , and the electronic components pass through the fifth opening 232 at least A portion is located between the first edge sealing portions 2212 of two adjacent cells 22 . When the electronic components of the second circuit board 4 pass through the fifth opening 232, the above-mentioned gap between the tabs 222 and the tabs 222 can be utilized, so as to realize the reasonable application of the second space 21s. In the third direction L3, no Due to the arrangement of electronic components, the size of the battery module 2 in the third direction L3 is increased. In other words, in the third direction L3, the capacity of the battery module 2 can be expanded.

In some embodiments, please refer to FIG. 9 , FIG. 11 and FIG. 12 , the battery module 2 further includes a first insulating member 24 , and the first insulating member 24 is formed by curing the resin in the first cavity 2111 . The insulating member 24 wraps the part of the tab 222 extending out of the package shell 221, the first circuit board 23 and the second circuit board 4, the tab 222, and the part of the tab 222 that is electrically connected to the first circuit board 23 by the first insulating member. 24 wrapping is convenient for waterproof and anti-fouling of the battery module 2, the dirt in the battery compartment 1 is discharged through the first through hole 131, and the performance of the battery module 2 is good. The relative positions of the tab 222 , the first circuit board 23 and the second circuit board 4 are fixed by the first insulating member 24 to reduce the relative displacement between the tab 222 , the first circuit board 23 and the second circuit board 4 , thereby reducing the relative displacement between the tab 222 , the first circuit board 23 and the second circuit board 4 The wear of the tabs 222 , the first circuit board 23 and the second circuit board 4 is reduced. In addition, by providing the first insulating member 24, the waterproof performance of the battery module 2 can be enhanced.

In some embodiments, the first insulating member 24 also wraps the end of the cell 22 close to the tab 222 . That is, the first insulating member 24 wraps one end of the accommodating portion 2211 of the battery cell 22 close to the tab 222 , thereby further enhancing the waterproof performance of the battery module 2 .

Optionally, the first insulating member 24 includes potting glue.

In some embodiments, referring to FIG. 8 , along the third direction L3 , there is a space 211s between the first bracket 211 and the second bracket 212 . The part of the accommodating part 2211 of the battery cell 22 is arranged in the empty space 211s, that is, the electrode assembly part arranged in the accommodating part 2211 is arranged in the empty space 211s, so as to facilitate the heat dissipation of the electrode assembly.

The battery pack 100 further includes a second insulating member 6 . The second insulating member 6 is located in the vacancy 211s between the first bracket 211 and the second bracket 212 . The second insulating member 6 is in contact with the plurality of cells 22 and the battery compartment 1 . If the second insulating member 6 is provided, the collision between the battery cells 22 and the battery compartment 1 is slowed down, and the battery cells 22 are not easily damaged.

The second insulating member 6 wraps a plurality of battery cells 22 , and the second insulating member 6 is correspondingly disposed in the accommodating portion 2211 of the battery core 22 .

Wherein, the second insulating member 6 may be foam, rubber, or pressure-sensitive adhesive or the like.

In some embodiments, please refer to FIG. 9 , the second bracket 212 is provided with a sixth opening 2122 communicating with the second cavity 2121 , so as to facilitate the heat dissipation of the battery cell 22 . The battery pack 100 further includes a third insulating member 7 , the third insulating member 7 is disposed in the sixth opening 2122 , and the third insulating member 7 abuts against the battery cells 22 and the battery compartment 1 respectively, so that the space between the battery cells 22 and the battery compartment 1 is formed. The collision is buffered, and the battery cell 22 is not easily damaged.

Wherein, the third insulating member 7 may be foam, rubber, or pressure-sensitive adhesive.

The battery pack 100 further includes a functional module 3 , please refer to FIG. 9 and FIG. 13 . The functional module 3 is connected to the second circuit board 4 . In some embodiments, the functional module 3 is stacked with the battery module 2 along the second direction L2 , and the functional module 3 is connected to the second circuit board 4 through wires 31 .

In the embodiment of the present application, the battery pack 100 includes a battery compartment 1 and a battery module 2 . The battery compartment 1 is provided with a first space 11s, a first opening 111 and a second opening 121 . The first space 11s is provided with a channel 12s, and the channel 12s communicates with the first opening 111 and the second opening 121 respectively. The battery module 2 is installed in the first space 11s. By arranging the channel 12s in the first space 11s of the battery pack 100, and setting the first opening 111 and the second opening 121 in the battery pack 100, the battery module 2 can be connected to the battery module 2 through the first opening 111, the channel 12s and the second opening 121. The heat dissipation is beneficial to reduce the temperature of the battery module 2, and the performance of the battery pack 100 is good.

Embodiments of the present application also provide embodiments of electrical equipment. Please refer to FIG. 14 . The electrical equipment 200 includes a battery pack 100 . For the specific structure and function of the battery pack 100, reference may be made to the above-mentioned embodiments, which will not be repeated here.

The above-mentioned electrical equipment includes a scooter, and the scooter is provided with front wheels 8 and rear wheels 9 . The battery compartment 1 is the body 1s of the scooter, and the front wheels 8 and the rear wheels 9 are respectively arranged on both ends of the body 1s. The first top wall 11 of the battery compartment 1 is the pedal 1s1 of the scooter. The body 1s of the scooter acts as the battery compartment 1 to protect the battery module 2, which improves the space utilization of the scooter.

The travel direction of the scooter is along the second direction L2, the second wall 122 and the first wall 123 are arranged in sequence along the second direction L2, the first opening 111 is arranged on the first wall 123, and the second opening 111 is along the travel of the scooter Therefore, when the scooter is traveling, the wind enters the first space 11s from the first opening 111, which is beneficial to reduce the temperature of the battery module 2 in the scooter, and the performance of the scooter is good.

The above-mentioned battery pack 100 may also be a drone, a sweeping robot, or the like.

It should be noted that preferred embodiments of the present application are given in the description of the present application and the accompanying drawings. However, the present application can be implemented in many different forms, and is not limited to the embodiments described in the present specification. These embodiments are not intended as additional limitations to the content of the present application, and are provided for the purpose of making the understanding of the disclosure of the present application more thorough and complete. In addition, the above technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of this application; further, for those of ordinary skill in the art, they can be improved or transformed according to the above descriptions , and all these improvements and transformations should belong to the protection scope of the appended claims of this application.

Claims

A battery pack, comprising:

The battery compartment is provided with a first space, a first opening, a second opening and a channel, and the channel communicates with the first space, the first opening and the second opening;

The battery module is arranged in the first space.
The battery pack according to claim 1, wherein,

The battery compartment includes a first top wall, a first side wall and a first bottom wall, the first top wall, the first side wall and the first bottom wall together form the first space, the first top wall The wall and the first bottom wall are arranged at intervals along the first direction, and the first opening is arranged on the first side wall.
The battery pack according to claim 2, wherein,

the first opening includes a first portion and a second portion;

the channel includes a first channel and a second channel;

the first channel is located on the first top wall, the first channel is in communication with the first portion and the second opening;

The second channel is located on the first bottom wall, and the second channel communicates with the second portion and the second opening.
The battery pack according to claim 3, wherein the first side wall comprises a first wall, the first opening is provided in the first wall, the first wall and the first bottom wall The included angle is an obtuse angle.
The battery pack according to claim 4, wherein,

The first part is disposed close to the first top wall, the second part is disposed close to the first bottom wall, and the included angle between the first part and the first top wall is an obtuse angle.
The battery pack according to claim 5, wherein,

The included angle between the second portion and the first bottom wall is an obtuse angle.
The battery pack of claim 3, wherein the battery pack includes a first through hole penetrating the first bottom wall.
The battery pack of claim 7, wherein the first through hole communicates with the second channel.
The battery pack according to claim 4, wherein,

The first side wall is provided with a second wall, the second wall and the first wall are oppositely disposed along a second direction, and the second channel extends along the second direction.
The battery pack of claim 3, wherein the first top wall comprises a first recess, the first recess is formed with the first channel, the first bottom wall comprises a second recess, and the The second recess is formed with the second channel.
The battery pack according to any one of claims 1 to 10, further comprising a filter screen covering the first opening.
The battery pack according to claim 9, wherein the battery module comprises a battery case and a plurality of cells, the battery case is provided with a second space, and the plurality of cells are stacked along the second direction. the second space;

The battery case includes a first bracket and a second bracket, the first bracket and the second bracket are oppositely arranged along the third direction, the first bracket is provided with a first cavity, and the second bracket is provided with a second bracket. A cavity, the second space includes the first cavity and the second cavity; the cell part is provided in the second cavity, and the cell part is provided in the first cavity.
The battery pack according to claim 12, wherein the battery pack further comprises a first insulating member, and the first insulating member is formed by setting resin in the first cavity and then curing.
The battery pack according to claim 13, wherein the battery pack further comprises a first circuit board, the first circuit board is accommodated in the first cavity, the first circuit board and the plurality of The cells are electrically connected, and the first insulating member wraps the first circuit board.
The battery pack according to claim 14, wherein the battery pack further comprises a second circuit board electrically connected to the first circuit board, the second circuit board is disposed in the first cavity, The second circuit board is arranged on a side of the first circuit board away from the battery core, and the first insulating member wraps the second circuit board.
The battery pack of claim 15, wherein:

The battery core includes an electrode assembly, an encapsulation case and a tab;

The packaging case includes a receiving portion and a first edge sealing portion extending outward from the receiving portion, and the electrode assembly is disposed in the receiving portion;

A part of the accommodating part is provided in the first cavity, and a part of the accommodating part is provided in the second cavity;

One end of the tab is connected to the electrode assembly, and the other end of the tab protrudes from the first edge sealing portion along the third direction and is electrically connected to the first circuit board;

The first insulating member wraps the portion of the tab extending out of the encapsulation case, and the first insulating member wraps the first edge sealing portion.
The battery pack according to claim 16, wherein the second circuit board includes electronic components, the first circuit board is provided with a fifth opening, and the electronic components pass through the fifth opening at least partially It is located between the first edge sealing parts of two adjacent cells.
The battery pack according to any one of claims 12 to 17, wherein the battery pack further comprises a second insulating member, the second insulating member covering the cells located on the first bracket and the second bracket space between.
The battery pack according to any one of claims 12 to 17, wherein the second bracket is provided with a sixth opening communicating with the second cavity, the battery pack further comprises a third insulating member, the The third insulating member is disposed at the sixth opening, and the third insulating member is respectively in contact with the battery cell and the battery compartment.
An electrical device, characterized by comprising the battery pack according to any one of claims 1 to 19.
The electrical equipment according to claim 20, wherein the electrical equipment comprises a scooter, and the first opening is an air inlet along a traveling direction of the scooter.