CN113206320B

CN113206320B - Battery pack and electric equipment

Info

Publication number: CN113206320B
Application number: CN202110474873.6A
Authority: CN
Inventors: 李坤龙
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2023-07-28
Anticipated expiration: 2041-04-29
Also published as: CN113206320A

Abstract

The embodiment of the application relates to a battery pack and electric equipment, wherein 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 communicates with the first opening and the second opening, respectively. The battery module is arranged in the first space. And the heat generated by the operation of the battery module is taken out through the channel, so that the performance of the battery pack is improved.

Description

Battery pack and electric equipment

Technical Field

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

Background

Scooter is one of the products of skateboard sport. The scooter is suitable for various age groups due to moderate speed, easy operation, and brake device. For example, for office workers, the use of scooters on some short-range routes is certainly a trendy, playful and practical way. For example, for teenagers, the scooter is loving, many teenagers are in possession of a scooter, and the scooter has a good exercise effect on the well-developed balance system of the teenagers. Generally, a battery module is provided for a scooter.

In carrying out the present application, the applicant of the present application found that: at present, the battery module of scooter can produce heat at the during operation, and the heat gathers in the scooter and influences the performance of scooter easily, and user experience is not good.

Disclosure of Invention

In view of the above, the embodiment of the application provides a battery pack and electric equipment, and the technical problem that heat generated by a battery module is gathered in a scooter to influence performance of the scooter is solved.

According to an aspect of the embodiments of the present application, there is provided a battery pack including: battery compartment and battery module. The battery compartment is provided with a first space, a first opening, a second opening and a channel, and the channel is communicated 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 reduced, and the performance of the battery pack is good.

In an alternative, 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 and the first bottom wall are spaced apart along a first direction. The first opening is arranged on the first side wall. When the battery pack moves, wind enters the first space from the first opening and flows in the channel s, so that the battery module in the first space is radiated, and the radiating effect is good.

In an alternative, the first opening includes a first portion and a second portion; the channel s comprises a first channel and a second channel; the first channel is positioned on the first top wall and is communicated with the first part and the second opening; the second channel is positioned on the first bottom wall and is communicated with the second part and the second opening. Through establishing first passageway and second passageway at the battery compartment to the radiating effect to the group battery is good.

In an alternative 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. So that more wind can be introduced into the passage when the battery pack is moved. In addition, the contained angle of first roof and first diapire is the obtuse angle, and then the group battery is when using, and for example rainwater etc. is difficult for getting into first space from first opening, and the life of the battery module in the first space is long.

In an alternative manner, the included angle between the first portion and the first top wall is an obtuse angle, and the end of the first portion close to the first top wall faces the first top wall. So that the wind blown toward the first top wall is more introduced into the passage s from the first portion when being directed toward the first top wall, and thus the heat dissipation effect of the battery pack is good. In addition, the first part is close to one end of the first top wall towards the first top wall, and when the first part is entered, the foreign matters such as dust slide out of the battery compartment along the first part, i.e. the foreign matters such as dust are not easy to enter the first space from the first part, thereby influencing the service life of the battery module.

In an alternative form, the angle between the second portion and the first bottom wall is an obtuse angle. So that the wind blown toward the first top wall is more introduced into the passage s from the second portion when being guided toward the first bottom wall, and the heat dissipation effect of the battery pack is good. In addition, when the second part is close to one end of the first bottom wall and faces the first top wall, the foreign matters such as dust slide out of the battery compartment along the second part when entering the second part, namely, the foreign matters such as dust are not easy to enter the first space from the second part, so that the service life of the battery module is influenced.

In an optional mode, first diapire still is equipped with first through-hole, through first through-hole, the filth in the first space of being convenient for is discharged from first through-hole, and the battery module in the first space receives the influence of filth little.

In an alternative way, the first through hole is communicated with the second channel, so that the dirt in the first space is more conveniently discharged from the first through hole

In an alternative mode, the first side wall comprises a second wall, the second wall and the first wall are oppositely arranged along the second direction, the second channel extends along the second direction L, so that even if water is accumulated in the first space, the water can be discharged from the groove and the first through hole, the corrosion of the battery module caused by water and other dirt is less, and the service life of the battery module is long.

In an alternative form, the first top wall includes a first recess formed with the first channel, and the first bottom wall includes a second recess formed with the second channel.

In an alternative, the battery pack further comprises a filter screen covering the first opening. Through establishing the filter screen, then foreign matter such as dust is difficult to get into in the first space to the battery module in the first space long service life.

In an alternative mode, the battery module comprises a battery shell and a plurality of electric cells, wherein the battery shell is provided with a second space, and the electric cells are stacked in the second space along the second direction. The battery case comprises a first support and a second support, the first support and the second support are oppositely arranged along the third direction, the first support is provided with a first cavity, the second support is provided with a second cavity, and the second space comprises the first cavity and the second cavity; the battery core part is arranged in the second cavity, the battery core part is arranged in the first cavity, and the electrode lug is arranged in the first cavity. Therefore, the first bracket and the second bracket can not fully accommodate the battery core, namely, a part of the battery core is exposed, so that on one hand, the battery shell is made of less materials, on the other hand, the exposed part of the battery core is convenient for heat dissipation, on the other hand, the vacant positions of the first bracket and the second bracket along the third direction can be used by other parts of the battery pack, and the space utilization rate of the battery pack is high.

In an alternative mode, the battery module further comprises a first circuit board, and the first circuit board is connected with the tab; the first circuit board is overlapped with the plurality of electric cores along the third direction, the first circuit board is close to the electrode lug, and the first circuit board is accommodated in the first cavity. The battery module is compact in structure and small in occupied space.

In an alternative, the first circuit board is a BMS board.

In an alternative mode, the battery pack further comprises a functional module and a second circuit board, wherein the functional module is arranged in the first space, and the second circuit board is arranged in the first cavity; the second circuit board is overlapped with a surface, far away from the battery core, of the first circuit board along the third direction; the second circuit board is electrically connected with the first circuit board and the functional module. The second circuit board is used for controlling the functional module, and the first circuit board is used for controlling charging and discharging of the battery core. The second circuit board and the first circuit board are overlapped, so that the reasonable utilization of the limited space in the battery bin of the battery pack can be realized.

In an alternative mode, the battery pack further comprises a first insulating piece, the first insulating piece is formed by setting resin in the first cavity in a post-curing mode, and the waterproof and dustproof performance of the battery module can be enhanced by setting the first insulating piece.

In an alternative manner, the battery cell further comprises an electrode assembly, a package case and a tab; the packaging shell comprises a containing part and a first edge sealing part which is formed by extending outwards from the containing part, and the electrode assembly is arranged on the containing part; the accommodating part is arranged in the first cavity, and the accommodating part is arranged in the second cavity; one end of the tab is connected with the electrode assembly, and the other end of the tab extends out of the first edge sealing portion along the third direction. The first insulating piece wraps the part of the packaging shell at the extending part of the tab, and the first insulating piece wraps the first edge sealing part. Through the first insulating member, the waterproof and dustproof performance of the battery module is excellent.

In an alternative manner, there is a void between the first and second brackets along the third direction; the portion of the receiving portion is disposed in the void. Namely, the part of the electrode assembly faces the vacancy, the heat dissipation is carried out on the electrode assembly through the vacancy, and the heat dissipation performance of the battery pack is good.

In an alternative mode, the battery pack further comprises a second insulating piece, the second insulating piece is located in the empty space, and the second insulating piece is respectively abutted with the electric core and the battery bin. The second insulating piece is arranged at the empty position, so that the collision between the battery cell and the inner surface of the first space is relieved, and the battery cell is not easy to damage.

In an alternative mode, the second bracket is provided with a sixth opening communicated with the second cavity, so that the heat dissipation performance of the battery cell is good.

In an optional mode, the battery pack further comprises a third insulating part, the third insulating part is arranged at the sixth opening, and the third insulating part is respectively abutted with the battery cell and the battery compartment, so that the collision between the battery cell and the inner surface of the first space is relieved, and the battery cell is not easy to damage.

According to an aspect of an embodiment of the present application, there is provided an electric device, including the above battery pack.

In an alternative mode, the electric device comprises a scooter, and the first opening is an air inlet along the travelling direction of the scooter. When the scooter is advancing, wind enters the scooter from the first opening, the temperature of a battery module in the scooter is reduced, and the performance of the scooter is good.

The beneficial effects of the embodiment of the application are that: the utility model provides a group battery and consumer, the first space is established to the battery compartment of group battery, and first space is used for acceping the battery module, and the passageway is established to the internal surface in first space, and first opening and second opening are established to the battery compartment, and wherein, first opening and second opening all communicate with the passageway to wind can get into first space from first opening to act on the battery module along the passageway, the heat that the battery module during operation produced can follow the second opening and dispel, and the heat dispersion of group battery is good. The battery pack is applied to electric equipment such as a scooter, so that heat generated by the battery pack is not easy to gather, and the user experience is good.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

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

fig. 2 is a schematic view of another direction of the battery pack according to the embodiment of the present application

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

fig. 4 is an exploded view of a battery pack provided in an embodiment of the present application;

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

FIG. 6 is an enlarged schematic view of portion A of FIG. 3 provided in an embodiment of the present application;

FIG. 7 is a schematic view of a first bottom wall of a battery compartment provided in an embodiment of the present application;

fig. 8 is a schematic view of a battery module with a lead connected thereto according to an embodiment of the present application;

fig. 9 is a schematic view of a partial explosion of a battery pack provided in an embodiment of the present application;

fig. 10 is a schematic diagram of a battery cell provided in an embodiment of the present application;

fig. 11 is a schematic view of a battery module according to an embodiment of the present application, to which a second insulating member and a third insulating member are connected;

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

fig. 13 is a schematic diagram of a connection relationship between a functional module and a battery module according to an embodiment of the present disclosure;

fig. 14 is a schematic view of an electric scooter provided in an embodiment of the present application.

Detailed Description

In order to facilitate an understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific examples. It will be understood 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 the like are used in this specification for purposes of illustration 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. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a 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 passage 12s, one end of the passage 12s communicates with the first opening 111 and the other end of the passage 12s communicates with the second opening 121. The battery module 2 is provided in the first space 11s. The battery module 2 radiates heat through the first opening 111, the second opening 121 and the channel 12s, and reduces the temperature of the battery pack 100, which is advantageous for improving the performance of the battery pack 100. In some embodiments, the first opening 111 is for an intake vent, the second opening 121 is for an exhaust vent, and the channel 12s is used as a duct for ventilation.

Referring to fig. 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. The first top wall 11 and the first bottom wall 13 are each 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 provided in the first sidewall 12.

The first side wall 12 is provided with the first opening 111, so that when the battery pack 100 is provided to an external device, wind can enter the first space 11s from the first opening 111 and flow in the channel 12s when the external device moves, thereby radiating the heat of the battery module 2 in the first space 11s, and the heat radiating effect is good.

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

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

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

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

In some embodiments, referring to fig. 3 and 6, the first portion 1111 is disposed adjacent to the first top wall 11 and the second portion 1112 is disposed adjacent to the first bottom wall 13. The end of the first portion 1111 near the first top wall 11 faces the first top wall 11, and the wind direction F1 is adjusted by the first portion 1111, which is advantageous 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 the foreign matter such as dust enters the first portion 1111, the first portion 1111 disposed obliquely is beneficial to the movement of the foreign matter from the second portion 1111 to the outside of the battery compartment 1 under the action of gravity, so as to limit the entry of the foreign matter such as dust from the first portion 1111 into the first space 11s, thereby affecting the use of the battery module 2.

In some embodiments, referring to fig. 6, the angle between the second portion 1112 and the first bottom wall 11 is an obtuse angle, the end of the second portion 1112 near the first bottom wall 13 faces the first top wall 11, and the wind direction F1 is adjusted by the second portion 1112, so as to reduce the speed of the wind entering the second channel 12s2 and reduce the influence of the wind on the battery pack 100. When the foreign matters such as dust enter the second portion 1112, the second portion 1112 disposed obliquely is beneficial to the foreign matters to move from the second portion 1112 to the outside of the battery compartment 1 under the action of gravity, so that the foreign matters such as dust are limited from the second portion 1112 to enter the first space 11s, and the use of the battery module 2 is affected.

In some embodiments, referring to fig. 3 and 4, the battery pack 100 includes a filter 5, the filter 5 is disposed in the first space 11s, the filter 5 covers the first opening 111, and foreign matters such as dust are blocked by the filter 5, so as to further limit the dust from entering the first space 11s, which is beneficial to prolonging the service life of the battery module 2.

Referring to fig. 5, the first channel 12s1 extends along the second direction L2. In some embodiments, the number of the first channels 12s1 is plural, and the plural first channels 12s1 are arranged in parallel along the third direction L3 on the first bottom wall 13, where the third direction L3 is perpendicular to the second direction L2, and the third direction L3 is 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 channels 12s2 is plural, and the plural second channels 12s2 are disposed in parallel to the first bottom wall 13 along the third direction L3.

In some embodiments, referring to fig. 5 and 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 for discharging foreign matters and the like in the first space 11s from the first through hole 131, and the battery module 2 has a long service life. Alternatively, the number of the first through holes 131 is plural, and the plurality of first through holes 131 are distributed in the plurality of second passages 12s2, so that the effect of discharging the foreign matter from the first through holes 131 is good.

In some embodiments, referring to fig. 8 and 9, the battery module 2 includes a battery case 21 and a plurality of battery cells 22, the battery case 21 is provided with a second space 21s, and the plurality of battery cells 22 are stacked in the second space 21s along the second direction L2. 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 battery cells 22 is relatively uniform.

In some embodiments, referring to fig. 10, the battery cell 22 includes an electrode assembly (not shown), a package case 221 and a tab 222, the package case 221 includes a receiving portion 2211 and a first sealing portion 2212 formed by extending from the receiving portion 2211, the electrode assembly is received in the receiving portion 2211, one end of the tab 222 is connected to the electrode assembly, and the other end of the tab 222 extends from the first sealing portion 2212. The other end of the tab 222 protrudes from the first sealed portion 2212 in the above-described third direction L3.

It is understood that each cell 22 has two tabs 222 of opposite polarity.

The receiving portion 2211 includes a second side wall 2211a and a third side wall 2211b, the second side wall 2211a is connected to the first sealing portion 2212, the third side wall 2211b is connected to the first sealing portion 2212, and the second side wall 2211a and the third side wall 2211b are disposed on opposite sides of the first sealing portion 2212. The first sealed portion 2212 and the second side wall 2211a form a third recess 2211c, the first sealed 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. In this embodiment, the first sealing portion 2212 is disposed at a central position 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 sealing portion 2212 is disposed at another position of the accommodating portion 2211, and the length w1 of the second side wall 2211a and the length w2 of the third side wall 2211b are different along the second direction L2.

The accommodating portion 2211 further extends outwards 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 second side wall 2211a, the third side wall 2211b and the first sealing portion 2212 are all connected with the second sealing portion 313, and the second side wall 2211a, the third side wall 2211b and the first sealing portion 2212 are all connected with the third sealing portion 314.

In some embodiments, referring 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 disposed opposite to each other along the third direction L3, the first bracket 211 is provided with a first cavity 2111, the second bracket 212 is provided with a second cavity 2121, and the second space 21s includes the first cavity 2111 and the second cavity 2121. The portion of the accommodating portion 2211 of the battery cell 22 is disposed in the second cavity 2121, the portion of the accommodating portion 2211 of the battery cell 22 is disposed in the first cavity 2111, and the tab 222 is disposed in the first cavity 2111. The battery module 2 further includes a first circuit board 23, and the first circuit board 23 is connected to the tab 222. The first circuit board 23 is stacked with the plurality of electric cores 22 along the third direction L3, the first circuit board 23 is close to the tab 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 stacked with a surface of the first circuit board 23 away from the battery cell 22 along the third direction L3, and the second circuit board 4 is electrically connected with the first circuit board 23.

The second circuit board 4 is used for controlling the functional module 3, the first circuit board 23 is used for controlling charging and discharging of the plurality of battery cells 22, and the second circuit board 4 and the first circuit board 23 are stacked, so that the reasonable utilization of the limited space in the battery compartment 1 of the battery pack 100 can be realized.

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

The tabs 222 of the plurality of electric cores 22 are respectively connected with 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 electric cores 22 respectively pass through the first circuit board 23 after being connected with the first circuit board 23 at the fourth opening 231, and are connected with the second circuit board 4 at the third opening 41.

It can be understood that 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, and the two tabs 222 are respectively connected to the respective opposite battery cells 22. 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, and the two tabs 222 are respectively connected to the respective opposite battery cells 22. 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 may be two.

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

In some embodiments, the tab 222 of the battery 22 may be separately connected to the second circuit board 4 at the third opening 41, or the tabs 222 of several battery 22 are connected to the second circuit board 4 at the third opening 41.

In some embodiments, the third opening 41 and the fourth opening 231 may each limit the tab 222.

In some embodiments, referring to fig. 9, the first circuit board 23 is further provided with a fifth opening 232, and the second circuit board 4 extends the electronic component toward the first circuit board 23, and the electronic component passes through the fifth opening 232. When the electronic component of the second circuit board 4 passes through the fifth opening 232, the gap between the tab 222 and the tab 222 can be utilized, so as to realize reasonable application of the second space 21s, and the size of the battery module 2 in the third direction L3 is not increased due to the arrangement of the electronic component in the third direction L3. In other words, in the third direction L3, the capacity of the battery module 2 can be expanded.

In some embodiments, referring to fig. 9, 11 and 12, the battery module 2 further includes a first insulating member 24, the first insulating member 24 is formed by curing resin after being disposed in the first cavity 2111, the first insulating member 24 wraps a portion of the tab 222 extending out of the package case 221, the first circuit board 23 and the second circuit board 4, the tab 222, and a portion of the tab 222 electrically connected to the first circuit board 23 are wrapped by the first insulating member 24, so that the battery module 2 is convenient to be waterproof and antifouling, 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 through the first insulating piece 24, so that the relative displacement among the tab 222, the first circuit board 23 and the second circuit board 4 is reduced, and further the abrasion among the tab 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 around an end of the cell 22 proximate to the tab 222. That is, the first insulating member 24 wraps the end of the receiving part 2211 of the battery cell 22 near the tab 222, thereby further enhancing the waterproof performance of the battery module 2.

Optionally, the first insulating member 24 comprises a potting compound.

In some embodiments, referring to fig. 8, in the third direction L3, the first and second brackets 211 and 212 have a space 211s therebetween. The portion of the receiving part 2211 of the battery cell 22 is disposed in the space 211s, that is, the portion of the electrode assembly disposed in the receiving part 2211 is disposed in the space 211s, thereby facilitating heat dissipation of the electrode assembly.

The battery pack 100 further comprises a second insulating member 6, the second insulating member 6 is located in the empty space 211s, the second insulating member 6 is abutted against the plurality of battery cells 22 and the battery compartment 1, and through the arrangement of the second insulating member 6, collision between the battery cells 22 and the battery compartment 1 is slowed down, and the battery cells 22 are not easy to damage.

It can be understood that the second insulating member 6 wraps the plurality of battery cells 22, and the second insulating member 6 is correspondingly disposed in the receiving portion 2211 of the battery cells 22.

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

In some embodiments, referring to fig. 9, the second bracket 212 is provided with a sixth opening 2122 that communicates with the second cavity 2121 to facilitate heat dissipation of the battery cell 22. The battery pack 100 further includes a third insulating member 7, where the third insulating member 7 is disposed in the sixth opening 2122, and the third insulating member 7 is respectively abutted against the battery cell 22 and the battery compartment 1, so that collision between the battery cell 22 and the battery compartment 1 is buffered, and the battery cell 22 is not easily damaged.

Wherein the third insulator 7 may be foam, rubber, or pressure sensitive adhesive, etc.

The battery pack 100 further includes a functional module 3, referring to fig. 9 and 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 in the second direction L2, and the functional module 3 is connected with the second circuit board 4 through the 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 passage 12s, and the passage 12s communicates with the first opening 111 and the second opening 121, respectively. The battery module 2 is mounted in the first space 11s. By providing the channel 12s in the first space 11s of the battery pack 100 and providing the first opening 111 and the second opening 121 in the battery pack 100, the heat dissipation of the battery module 2 can be performed through the first opening 111, the channel 12s and the second opening 121, which is beneficial to reducing the temperature of the battery module 2 and has good performance of the battery pack 100.

Embodiments of the present application also provide an embodiment of a powered device, referring to fig. 14, a powered device 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, and detailed description thereof will be omitted.

The electric equipment comprises a scooter, wherein front wheels 8 and rear wheels 9 are arranged on the scooter. The battery compartment 1 is a scooter body 1s, and the front wheels 8 and the rear wheels 9 are respectively arranged at two ends of the scooter body 1s. The first top wall 11 of the battery compartment 1 is a pedal 1s1 of the scooter. The scooter body 1s serves as a battery compartment 1 to protect the battery module 2, so that the space utilization rate of the scooter is improved.

The direction of travel of scooter sets gradually along second direction L2, second wall 122 and first wall 123, and first wall 123 is located to first opening 111, and second opening 111 is the air intake along the direction of travel of scooter to the scooter is when advancing, and wind gets into first space 11s from first opening 111, thereby is favorable to reducing the temperature of battery module 2 in the scooter, and scooter's performance is good.

The battery pack 100 may be an unmanned aerial vehicle, a sweeping robot, or the like.

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

Claims

1. A battery pack, comprising:

the battery compartment comprises a first top wall, a first side wall and a first bottom wall, a first space is formed by the first top wall, the first side wall and the first bottom wall together, and the battery module is arranged in the first space;

the first top wall and the first bottom wall are arranged at intervals along a first direction, the first top wall is provided with a first channel, the first bottom wall is provided with a second channel, the first channel and the second channel are communicated with the first space, the second channel extends along a second direction, and the first direction and the second direction are perpendicular;

the first side wall comprises a first wall and a second wall which are oppositely arranged along the second direction, the first wall is provided with a first opening, the first opening comprises a first part and a second part, the first part is arranged close to the first top wall, the second part is arranged close to the first bottom wall, the first part is used for communicating the first channel with the outside, the second part is used for communicating the second channel with the outside, and an included angle between the first part and the first top wall is an obtuse angle; the second wall is provided with a second opening which respectively communicates the first channel and the second channel with the outside;

the first bottom wall is provided with a first through hole penetrating through the first bottom wall, and the first through hole is communicated with the second channel.

2. The battery of claim 1, wherein the angle between the first wall and the first bottom wall is an obtuse angle.

3. The battery pack of claim 1, wherein the battery pack comprises a plurality of cells,

the included angle between the second part and the first bottom wall is an obtuse angle.

4. The battery of claim 1, wherein the first top wall includes a first recess formed with the first channel, and the first bottom wall includes a second recess formed with the second channel.

5. The battery of any of claims 1-4, further comprising a filter screen covering the first opening.

6. The battery pack according to claim 5, wherein the battery module includes a battery case provided with a second space and a plurality of cells stacked in the second space in the second direction;

the battery case comprises a first support and a second support, the first support and the second support are oppositely arranged along a third direction, the first support is provided with a first cavity, the second support is provided with a second cavity, and the second space comprises the first cavity and the second cavity; the battery core part is arranged in the second cavity, and the battery core part is arranged in the first cavity.

7. The battery of claim 6, further comprising a first insulating member formed by post-curing a resin disposed in the first cavity.

8. The battery pack of claim 7, wherein the battery pack comprises a plurality of cells,

the battery cell comprises an electrode assembly, a packaging shell and a tab;

the packaging shell comprises a containing part and a first edge sealing part which is formed by extending outwards from the containing part, and the electrode assembly is arranged on the containing part;

the accommodating part is arranged in the first cavity, and the accommodating part is arranged in the second cavity;

one end of the tab is connected with the electrode assembly, and the other end of the tab extends out of the first edge sealing part along the third direction;

the first insulating piece wraps the part, extending out of the packaging shell, of the tab, and the first insulating piece wraps the first edge sealing part.

9. A powered device comprising a battery as claimed in any one of claims 1-8.

10. The powered device of claim 9, wherein the powered device comprises a scooter, and the first opening is an air inlet along a direction of travel of the scooter.