CN215680837U - Battery pack and electric equipment - Google Patents

Abstract

The embodiment of the application relates to a battery pack and electric equipment, and the battery pack comprises a shell, an electric core assembly, a first insulating part, a first support and an electric connection assembly. The shell is provided with a shell space; the electric core component is arranged in the shell space; the first insulating part is arranged between the electric core assembly and the shell; the first bracket part is arranged on the first insulating part; the first bracket comprises an insulating material, the electric connection assembly comprises a first electric connection piece, and the first electric connection piece is arranged on the first bracket; the first bracket, the housing, and the first insulating member form a first space. When external foreign matters enter the battery pack, the first space can contain the foreign matters, so that the influence of the foreign matters on the use of the battery pack is reduced.

Description

Battery pack and electric equipment

Technical Field

The embodiment of the application relates to the field of battery packs.

Background

A battery pack is a device that converts external energy into electric energy and stores the electric energy in the battery pack to supply power to external electric devices (e.g., portable electronic devices) at a desired time. At present, the battery package extensively applies to in consumer such as unmanned aerial vehicle, two rounds of electric motor cars, and inside external foreign matter probably got into the battery package, the use of influence battery package.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, embodiments of the present application provide a battery pack and an electric device, which reduce the influence of foreign objects on the use of the battery pack.

According to an aspect of an embodiment of the present application, there is provided a battery pack including a case, an electric core assembly, a first insulating member, a first bracket, and an electric connection assembly. The shell is provided with a shell space; the electric core component is arranged in the shell space; the first insulating part is arranged between the electric core assembly and the shell; the first bracket is arranged in the shell space and comprises an insulating material, and the first bracket part is arranged on the first insulating part; the electric connection assembly comprises a first electric connecting piece, and the first electric connecting piece is arranged on one side, away from the first insulating piece, of the first support; wherein the first bracket, the housing and the first insulating member form a first space.

When external foreign matters enter the battery pack, the first space can contain the foreign matters, so that the influence of the foreign matters on the use of the battery pack is reduced, such as water.

When the shell receives external force, the first space buffers the external force, and damage to the first electric connecting piece arranged on one side, away from the first insulating piece, of the first support and the first support is reduced.

In an alternative form, the first insulator is formed by post-curing a first insulating material disposed between the periphery of the cell assembly and the outer shell.

In an optional mode, the first insulating material comprises pouring sealant.

In an alternative mode, the distance between the first bracket and the shell in the first space is 0.1mm to 1 mm.

In an alternative form, a first gap exists between the first bracket and the first insulator. After the first insulating part and the first bracket are formed and the first gap between the first insulating part and the first bracket is formed, pouring sealant can be poured into the shell, so that the sealant is utilized to increase the protection of the electric core assembly. In addition, when the electric core assembly expands, the first gap can be used as an expansion space of the electric core assembly.

In an alternative mode, the first bracket includes a first portion and a second portion, the second portion is disposed on a side of the first portion close to the first insulating member, the second portion is disposed in the first insulating member, and the first gap exists between the first portion and the first insulating member.

In an alternative mode, the battery core assembly comprises a plurality of battery cells stacked along a first direction, each battery cell comprises an electrode assembly, an encapsulating shell and a tab, and the encapsulating shell comprises a containing part and a sealing part formed by extending outwards from the containing part; in a direction opposite to the first direction, a projection of the accommodating portion is located within an area formed by a projection of the second portion. When the electric core component expands, the electric core component is stressed uniformly.

In an alternative form, the electrode assembly is disposed in the receiving portion, one end of the tab is connected to the electrode assembly, and the other end of the tab protrudes from the sealing plate portion. The projection of the accommodating part is positioned in the area formed by the projection of the second part, and the second part of the first bracket does not apply force to the electrode assembly in the accommodating part, so that the damage of the electrode assembly can be reduced.

In an alternative mode, the first portion includes a first bottom wall and four first side walls, the first bottom wall and the four first side walls enclose a first recess, and the first electrical connector is disposed in the first recess. By providing the first recess, the first electrical connector is protected, reducing damage to the first electrical connector.

In an alternative mode, the second portion includes four second side walls extending from the first bottom wall in a direction away from the four first side walls. The first gaps are formed between the four second side walls and the first bottom wall, and the amount of pouring sealant poured in the shell can be increased through the first gaps, so that the pouring sealant is used for increasing the protection of the electric core assembly. In addition, when the electric core assembly expands, the first gap can be used as an expansion space of the electric core assembly.

In an optional mode, the battery pack further includes a first conductive device, the first conductive device is disposed in the housing space, the first bracket includes a through hole, the battery pack includes a first connecting portion connected to the tab, the first conductive device connects the first connecting portion and the first electrical connector, and a connecting portion of the first conductive device and the first connecting portion is located in the through hole. Through setting up the through-hole at first support, be convenient for electric core subassembly and first electric connector to be connected. The connecting part of the first conductive piece and the first connecting part is positioned in the through hole, so that the first conductive piece and the first connecting part are fixed conveniently, for example, by welding, for example, by a fastening piece such as a screw.

In an alternative form, the first bracket includes a partition provided between the through hole and the first electrical connector. Through the arrangement of the separating part, when the first insulating material is arranged around the electric core assembly and is solidified to form the first insulating part, the bonding of the first insulating part and the first electric connecting part is reduced

In an optional mode, the electrical connection assembly further includes a second electrical connector, the battery pack further includes a second bracket connected to the first bracket, the second electrical connector is connected to the electrical core assembly, and the second electrical connector is partially disposed on a side of the second bracket away from the first bracket. Through the second support, the second support is connected in first support, and first electric connector is protected by the second support, reduces first electric connector and damages. At least part of the second electrical connector is supported by the second bracket, the second electrical connector is at least partially separated from the first electrical connector, and the second electrical connector or the first electrical connector is convenient to repair and replace.

In an alternative form, the second bracket includes an opening through which the second electrical connector is connected with the first electrical connector. Through the opening, the second electric connector is convenient to be connected with the first electric connector.

In an alternative mode, the opening includes a first opening, the second bracket includes a second recess, the first opening is located in the second recess, and the battery pack further includes a third conductive member, at least a portion of the third conductive member is located in the first opening, and the third conductive member connects the first electrical connector and the second electrical connector. Through the third conductive piece, the first electric connecting piece is conveniently connected with the second electric connecting piece.

In an optional manner, the battery pack further includes a second insulating member, the second insulating member is located in the second concave portion, the second insulating member is formed by a second insulating material which is disposed around the third conductive member and then cured, and the second insulating member protects the third conductive member.

In an alternative mode, the second insulating material includes a potting adhesive.

In an alternative mode, at least one of the four first side walls is provided with a third concave portion, and the second bracket includes a first convex portion provided in the third concave portion. The third concave part and the first convex part facilitate the connection of the second bracket and the first bracket.

In an optional manner, the battery pack further includes a third insulating member, the third insulating member is disposed in the third concave portion, and the third insulating member connects the first convex portion and the third concave portion. The first convex part and the third concave part are sealed through the third insulating piece, and then the joint of the first support and the second support is sealed.

In an alternative form, the third insulator includes a seal ring.

In an optional mode, the housing includes a first housing and a second housing, the first housing has a second space, the second housing has a third space, the second housing is disposed in the first housing, the second space and the third space enclose to form the housing space, and the first bracket, the first housing and the first insulating member form the first space; the second shell is provided with a second convex part which extends into the second space; in a direction opposite to the first direction, a projection of the second protrusion at least partially overlaps a projection of the second bracket. Through setting up the second convex part, reduce the impurity outside the shell, for example moisture, dust etc. get into in the casing space, reduce the damage of impurity such as moisture, dust to first electric connector, second electric connector etc. in the casing space. The projection of the second convex part is at least partially overlapped with the projection of the second support, when the second shell is subjected to external force, the second shell moves towards the second support, and the second support is abutted against the second convex part of the second shell to limit the second support.

In an alternative form, the projection of the second convex portion is at least partially within the projection of the third concave portion in a direction opposite to the first direction. When the electric core assembly expands, the first bracket moves along the direction opposite to the first direction, so that the first bracket pushes the second bracket to abut against the second convex part of the second shell to limit the first bracket.

In an alternative form, the second housing and the first housing are connected along the first direction.

In an optional manner, the battery pack further includes a fourth insulating member, and the fourth insulating member is disposed between the first case and the second case. The fourth insulating member is used for sealing the first housing and the second housing when the second housing is arranged on the first housing.

In an alternative form, the fourth insulator comprises a sealing ring.

In an alternative mode, the second bracket includes a third protrusion located in the second space, and a third gap exists between the third protrusion and the first housing, and the third gap communicates with the first space. Foreign matters entering the shell space from the outside of the shell can be contained in the first space and then blocked by the first insulating part, so that impurities such as water vapor, dust and the like entering the first electric connecting piece or the second electric connecting piece are reduced, and damage to the first electric connecting piece or the second electric connecting piece is reduced. Furthermore, the third protruding part can limit foreign matters from entering the opening, and the influence of the foreign matters on structural components such as the third conductive piece is reduced.

According to an aspect of the embodiment of the application, an electric device is provided, which comprises the battery pack.

The embodiment of the application provides a battery pack, through set up first support between the first electric connector and the first insulating part at battery pack, first support, shell and first insulating part form first space, and when external foreign matter got into battery pack, foreign matter can be accommodated in first space, reduces the influence of foreign matter to battery pack's use, for example water. When the shell receives external force, the first space buffers the external force, reduces the damage of first support, first electric connector, and when electric core subassembly inflation, first space still can regard as the inflation space, reduces the shell and impairs because of the inflation of electric core subassembly.

Drawings

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

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

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

FIG. 3 is a cross-sectional view taken along line P-P of FIG. 1 according to an embodiment of the present application;

FIG. 4 is a partial cross-sectional view taken along line Q-Q of FIG. 1 provided by an embodiment of the present application;

FIG. 5 is a schematic view of a first bracket provided in accordance with an embodiment of the present application, viewed in a first direction;

FIG. 6 is a schematic view of a first bracket provided in accordance with an embodiment of the present application, viewed in a direction opposite to a first direction;

FIG. 7 is a schematic diagram of an electrical core assembly provided by embodiments of the present application;

fig. 8 is a schematic diagram of a battery cell provided in an embodiment of the present application;

FIG. 9 is a cross-sectional view taken along line R-R of FIG. 4 according to an embodiment of the present application;

FIG. 10 is a schematic view of a second electrical connector disposed on a second carrier as provided by an embodiment of the present application;

FIG. 11 is a schematic perspective view of a first bracket provided in accordance with an embodiment of the present application;

FIG. 12 is an enlarged schematic view of portion A of FIG. 3 according to an embodiment of the present disclosure;

fig. 13 is a schematic view of a second bracket provided in an embodiment of the present application.

Detailed Description

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

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

Referring to fig. 1 to 4, a battery pack 100 includes a housing 10, a battery cell assembly 20, a first insulator 30, a first bracket 40, and an electrical connection assembly 50. The housing 10 is provided with a housing space 10 s. The electric core assembly 20, the first insulating member 30, the first bracket 40 and the electric connection assembly 50 are provided in the housing space 10 s. The first insulating member 30 is disposed between the core assembly 20 and the housing 10, and the first bracket 40 is partially disposed on the first insulating member 30. The electrical connection assembly 50 includes a first electrical connector 501, and the first electrical connector 501 is disposed on a side of the first bracket 40 away from the first insulating member 30. The first bracket 40, the housing 10 and the first insulating member 30 form a first space 101 s. The first bracket 4 comprises an insulating material, and optionally, the first bracket 4 is formed into an integral structure through an injection molding process.

When foreign objects enter the battery pack 100, the first space 101s may receive the foreign objects, reducing the influence of the foreign objects, such as water, on the use of the battery pack 100. In some embodiments, when the housing 10 is subjected to an external force, the first space 101s buffers the external force, so as to reduce damage to the first bracket 40 and the first electrical connector 501 disposed on the side of the first bracket 40 away from the first insulating member 30.

In some embodiments, the first insulating member 30 is formed by curing a first insulating material disposed between the periphery of the electric core assembly 20 and the housing 10, and the first insulating member 30 adhesively fixes the electric core assembly 20 and the housing 10 and restricts movement of the electric core assembly 20. Further, the first insulating member 30 reduces contact between foreign matters and the electric core assembly 20, and improves protection of the electric core assembly 20. Optionally, the first insulating material includes a potting adhesive.

In some embodiments, by providing the first standoff 40 between the first electrical connector 501 and the first dielectric member 30, adhesion of the first electrical connector 501 during formation of the first dielectric member 30 may be reduced, impact on the use of the first electrical connector 501 may be reduced, and further, repair or replacement of the first electrical connector 501 may be facilitated.

In some embodiments, a first gap 401s exists between the first bracket 40 and the first insulator 30. Through the first gap 401s, after the first insulating member 30 and the first bracket 40 are formed and the first gap 401s between the first insulating member 30 and the first bracket 40 is formed, a potting adhesive may be further poured into the outer case 10, thereby increasing the protection of the electric core assembly 20 by the potting adhesive. In addition, when the electric core assembly 20 expands, the first gap 401s may serve as an expansion space for the electric core assembly 20. Optionally, the cell assembly 20 includes a plurality of cells 20s stacked in the first direction L1, and a first gap 401s exists between the first support 40 and the first insulating member 30 in the first direction L1.

In some embodiments, the first electrical connector 501 includes a BMS (battery Management system) circuit board for managing charging and discharging of the cell assembly 20. For example, the charge and discharge power, temperature, time, and the like of the electric core assembly 20 are managed.

Referring to fig. 3, the first frame 40 includes a first portion 401 and a second portion 402, the second portion 402 is disposed on a side of the first portion 401 close to the first insulating member 30, the first insulating member 30 is disposed on a portion of the second portion 402 away from the first portion 401, specifically, a portion of the structure of the second portion 402 is bonded to the first insulating member during the curing process of the first insulating member, and a portion of the structure of the second portion 402 is fixed to the first insulating member 30. A first gap 401s is formed between the first portion 401 and the first insulating member 30. The first gap 401 can further accommodate the flowing first insulating material as the first insulating material cures to form the first insulating member 30, enhancing the protection of the electric core assembly 20. When the cell assembly 20 expands, the first gap 401s can provide an expansion space for the cell assembly 20 to expand.

In other embodiments, the second portion 402 may be two structural members spaced apart from and parallel to each other such that the second portion 402 provides support to the first portion 401 to form the first gap 401 s. The specific structure of the second portion 402 and the connection to the first portion 401 are not specifically limited in this application. Optionally, the second portion 402 is circumferentially disposed on a side of the first portion 401 facing the first insulator 30.

Referring to fig. 3, 5, 6 and 11, the first portion 401 of the first frame 40 includes a first bottom wall 4011s and four first sidewalls 4012s, the first bottom wall 4011s and the four first sidewalls 4012s enclose a first recess 4011, and the first electrical connector 501 is disposed in the first recess 4011. The first electrical connector 501 is shielded by the second bracket 70, reducing damage to the first electrical connector 501.

With continued reference to fig. 3, 5 and 6, the second portion 402 of the first support 40 includes four second sidewalls 4021, and the four second sidewalls 4021 extend from the first bottom wall 4011s in a direction away from the four first sidewalls 4012 s. The four second sidewalls 4021 enhance the adhesion of the first bracket 40 to the first insulator 30, and the four first sidewalls 4012s are partially formed on the first insulator 30, which is beneficial to reduce the entry of impurities, such as moisture, dust, etc., into the first gap 401 s.

The first insulating member 30 may be formed by solidifying the flowing first insulating material, the flowing first insulating material being placed in the housing 10, the first support 40 being placed in the flowing first insulating material before the flowing first insulating material is solidified, and the second portion 402 of the first support 40, i.e., the portions of the four second side walls 4021, being adhesively fixed in the first insulating member 30 after the flowing first insulating material is solidified.

Referring to fig. 4, 7 and 8, the cell assembly 20 includes a plurality of cells 20s stacked along a first direction L1, each cell 20s includes an electrode assembly (not shown), an encapsulating case 202 and a tab 203, the encapsulating case 202 includes a receiving portion 2021 and a sealing portion 2022 extending outward from the receiving portion 2021, the electrode assembly is disposed in the receiving portion 2021, one end of the tab 203 is connected to the electrode assembly, and the other end of the tab 203 extends out of the encapsulating case 202. The tab 203 includes a first tab 2031 and a second tab 2032, and the first tab 2031 and the second tab 2032 have opposite polarities. The tabs 203 of the adjacent battery cells 20s are connected, and the plurality of battery cells 20s are connected in series or in parallel. The core assembly 20 further includes a first connection part 21, a second connection part 22, and a third connection part 23. Optionally, the first connection portion 21 is connected to the first tab 2031 of one of the battery cells 20s, the second connection portion 22 is connected to the second tab 2032 of another one of the battery cells 20s, and the first connection portion 21 and the second connection portion 22 may be used to connect with an external device to supply power to the external device or charge the battery cells 20s from the external device. Optionally, the third connection portion 23 is connected to the tab 203, and information such as voltage and current of the tab 203 may be collected through the third connection portion 23.

In the direction opposite to the first direction L1, the projection of the accommodating portion 2021 is located in the area formed by the projection of the second portion 402, which is beneficial to the cell 20s being stressed more uniformly when the cell 20s is expanded.

In a direction opposite to the first direction L1, the projection of the packaging shell 202 is located in the projection area formed by the second portion 402, which facilitates the connection of the tab 203 of the battery cell 20s with the electrical connection assembly 50.

Referring to fig. 4, the battery pack 100 further includes a first conductive member 601, the first conductive member 601 is disposed in the housing space 10s, and the first conductive member 601 connects the first connecting portion 21 and the first electrical connector 501.

In some embodiments, the first conductive member 601 includes a wire, a conductive sheet, and the like. Referring to fig. 3 and 10, the battery pack 100 further includes a second bracket 70, the second bracket 70 is disposed in the housing space 10s, and the second bracket 70 covers the opening of the first recess 4011. The electrical connection assembly 50 further includes a second electrical connector 502, wherein the second electrical connector 502 is at least partially disposed on a side of the second bracket 70 away from the first bracket 40. The battery pack 100 further includes a second conductive member 602, and the second conductive member 602 connects the second connection part 22 and the second electrical connector 502. Wherein the second electrical connector 502 comprises a connector. The second conductive member 602 includes a conductive wire or a conductive sheet.

Referring to fig. 11, the first support 40 is provided with a through hole 4012, and the through hole 4012 includes a first through hole 4012a, a second through hole 4012b, and a third through hole 4012 c. The second bracket 70 is provided with an opening 701, and the opening 701 includes a first opening 7011 and a second opening 7012.

One end of the first conductive member 601 is connected to the first connection portion 21, and the other end of the first conductive member 601 is connected to the first electrical connector 501. Optionally, a connection portion of the first conductive member 601 and the first connection portion 21 is located in the first through hole 4012a, which facilitates fixing of the first conductive member 601 and the first connection portion 21, for example, by welding, for example, by a fastener such as a screw. The connection portion of the second conductive member 602 and the second connection portion 22 is located in the second through hole 4012b, which facilitates the fixing of the second conductive member 602 and the second connection portion 22, for example, by welding, for example, by a fastening member such as a screw. The second conductive member 602 is connected to the second electrical connector 502 through the second opening 7012. The third connecting portion 23 passes through the third through hole 4012c and is connected to the first electrical connector 501, so that information such as voltage and current of the battery cell 20s can be transmitted to the first electrical connector 501. Alternatively, the third connection portion 23 is directly soldered to the first electrical connector 501.

The battery pack 100 further includes a third conductive member 603, one end of the third conductive member 603 is disposed in the first opening 7011, and the third conductive member 603 electrically connects the first electrical connector 501 and the second electrical connector 502.

In some embodiments, the third conductive member 603 includes a connector disposed on the first electrical connector 501, an end of the connector away from the first electrical connector 501 is located at the first opening 7011, and an end of the connector away from the first electrical connector 501 is used for connecting with the second electrical connector 502. The second electrical connector 502 comprises a connector, and the second electrical connector 502 can be used for external device mating connection.

In a direction opposite to first direction L1, the projection of package housing 202 is located within the projection forming area of second portion 402, facilitating the connection of electrical core assembly 20 and first, second, or third electrically- conductive members 601, 602, or 603.

Referring to fig. 11, the first support 40 includes a partition 4013, the partition 4013 is connected to the first bottom wall 4011s and a portion of the first sidewall 4012s, and the partition 4013 is disposed between the via 4012 and the first electrical connector 501. The partition 4013 includes a first partition 4013a, a second partition 4013b, and a third partition 4013c, the first partition 4013a is located between the first through hole 4012a and the first bottom wall 4011s, the second partition 4013b is located between the second through hole 4012b and the first bottom wall 4011s, and the third partition 4013c is located between the third through hole 4012c and the first bottom wall 4011 s. Through the arrangement of the partition 4013, when the first insulating material is arranged around the electric core assembly 20 and between the outer shells 10 to be cured to form the first insulating member 30, the first insulating member 30 can be prevented from entering the first concave portion 4011 of the first support 40, and the adhesion of the first insulating member 30 and the first electric connecting member 501 can be reduced.

Referring to fig. 10 and 13, the second bracket 70 is recessed toward the first bracket 40 to form a second recess 702 facing away from the first bracket 40 and a convex surface 702s facing the first bracket 40, and the first opening 7011 penetrates the second recess 702 and the convex surface 702 s. The third conductive member 603 is at least partially disposed in the first opening 7011, and the battery pack 100 further includes a second insulating member 80 disposed in the second recess 702, wherein the second insulating member 80 is formed by disposing a second insulating material around the third conductive member 603 and then curing the second insulating material. The second concave portion 702 limits the second insulating member 80, reduces the flow of the second insulating member 80, and reduces the adhesion of the second insulating member 80 to the first electrical connector 501 or the second electrical connector 502.

Optionally, the second insulating material comprises a sealant.

In some embodiments, the second insulating member 80 is further disposed in the second opening 7012 and disposed around the second electrically-conductive member 602 to protect the second electrically-conductive member 602.

Referring to fig. 3, 12 and 13, the first portion 401 of the first support 40 further includes a third recess 4014, the third recess 4014 is disposed on the first sidewall 4012s, the second support 70 is disposed on the first protrusion 703, and the first protrusion 703 is disposed on the third recess 4014, so that the first support 40 and the second support 70 are connected through the third recess 4014 and the first protrusion 703.

In some embodiments, referring to fig. 12, the battery pack 100 further includes a third insulating member 90, the third insulating member 90 is disposed between the first protrusion 703 and the third recess 4014, the third insulating member 90 is used for sealing the first protrusion 703 and the third recess 4014, and the third insulating member 90 is disposed to realize the sealing between the first support 40 and the second support 70.

In some embodiments, the third insulator 90 may include a sealant or a sealing ring.

Referring to fig. 3, the housing 10 includes a first housing 101 and a second housing 102, the first housing 101 has a second space 1011, the second housing 102 has a third space 1021, the second housing 102 is disposed on the first housing 101, the second space 1011 and the third space 1021 surround to form a housing space 10s, and the first bracket 40, the first housing 101 and the first insulating member 30 form a first space 101 s.

In some embodiments, along the first direction L1, the second space 1011 includes a first area 1011a and a second area 1011b, the first insulator 30 is disposed on the first area 1011a, and the first portion 401 is disposed on the second area 1011 b. The second bracket 70 is partially located in the second space 1011 and the second bracket 70 is partially located in the second area 1011 b.

In some embodiments, referring to fig. 12, the battery pack 100 further includes a fourth insulating member 110, the fourth insulating member 110 is disposed between the first casing 101 and the second casing 102, and the fourth insulating member 110 is used for sealing the first casing 101 and the second casing 102 when the second casing 102 is disposed on the first casing 101. Optionally, the fourth insulating member 110 includes a sealing ring or sealant.

Referring to fig. 2 and 3, the first housing 101 is provided with a protrusion 1011s, the protrusion 1011s is located in the second space 1011, and the protrusion 1011s is used for fastening the second housing 102 and the first housing 101 by a bolt. The number of the projections 1011s is plural, and the projections 1011 are distributed on two opposite sides of the first housing 101.

Referring to fig. 3 and 12, the second housing 102 is provided with a second protrusion 1022, the second protrusion 1022 extends into the second space 1011, and the second protrusion 1022 is provided to reduce impurities, such as external moisture, dust, and the like, entering the housing space 10s through the joint between the second housing 102 and the first housing 101, so as to reduce the damage of the impurities, such as moisture, dust, and the like, to the electrical connection assembly 50 or the electrical core assembly 20. The projection of the second protrusion 1022 and the projection of the second holder 70 at least partially overlap each other in the first direction L1, and when an external force is applied to the second housing 102, the second housing 102 moves toward the second holder 70, and the second holder 70 abuts against the second protrusion 1022 of the second housing 102, thereby restricting the movement of the second holder 70.

In some embodiments, along the first direction L1, a projection of the second protrusion 1022 is at least partially within a projection of the third recess 4014. When the electric core assembly 20 is expanded, the first holder 40 moves in a direction opposite to the first direction L1, so that the first holder 40 pushes the second holder 70 to abut against the second protrusion 1022 of the second housing 102, limiting the movement of the first holder 40.

In some embodiments, the second housing 102 and the first housing 101 are connected along the first direction L1.

In some embodiments, the second housing 102 is a rigid material, such as a metallic material, e.g., steel alloy, etc. The first housing 101 is a flexible material, such as plastic. When the air pressure in the case space 10s is greater than the air pressure outside the casing 10 of the battery pack 100 due to the expansion of the battery cell 20s, the first case 101 deforms, a pressure relief channel is formed at the joint of the first case 101 and the second case 102, and the risk of the casing 10 being broken due to the expansion of the battery cell 20s is reduced.

The second housing 102 is made of a rigid material, so that when an external force impacts the second housing 102, damage to the second bracket 70 disposed in the second housing 102 can be reduced.

Referring to fig. 12, the second bracket 70 includes a third protrusion 704 located in the second space 1011, a third gap 102s exists between the third protrusion 704 and the first housing 101, and the third gap 102s is communicated with the first space 101 s. Foreign matters outside the housing 10 and entering the housing space 10s can be accommodated in the first space 101s and then blocked by the first insulating member 30, so that the entry of impurities, such as moisture, dust and the like, into the first electrical connector 501 or the second electrical connector 502 is reduced, and the damage to the first electrical connector 501 or the second electrical connector 502 is reduced. Further, the third protrusion 704 may limit foreign objects from entering the opening 701 of the second bracket 70, and reduce the influence of the foreign objects on the third conductive member 603 and other structural members.

Referring to fig. 2 and 3, in some embodiments, the first housing 101 extends a first protrusion 1012 towards the second space 1011, the first bracket 40 has a second protrusion 404, the first protrusion 1012 has a first hole 1012a, the second protrusion 404 has a second hole 4041, when the first bracket 40 is disposed on the first housing 101, the first protrusion 1012 and the second protrusion 404 are abutted, the first hole 1012a and the second hole 4041 are opposite, the first hole 1012a and the second hole 4041 are used for a bolt to pass through, and the first bracket 40 is fixed in the first housing 101 by the first protrusion 1012 and the second protrusion 404.

The number of the first protrusions 1012 is plural, and the plural first protrusions 1012 are distributed in the first housing 101. The number of the second protrusions 404 is plural, and the plural second protrusions 404 are distributed in the first bracket 40. The first protrusions 1012 and the second protrusions 404 correspond one-to-one. Each first protrusion 1012 is provided with a first aperture 1012 a. Each second protrusion 404 defines a second aperture 4041.

In some embodiments, referring to fig. 2, a holding member 120 is further disposed on a surface of the second housing 102 opposite to the first housing 101, and the holding member 120 can facilitate the movement of the battery pack 100. The second housing 102 is made of a rigid material, and the grip 120 is disposed on the second housing 102, thereby reducing damage to the battery pack 100.

The embodiment of the present application further provides an embodiment of an electrical device, which includes a battery pack 100. For the specific structure and function of the battery pack 100, reference may be made to the above embodiments, and details are not repeated here. The powered device includes a battery. The powered device also includes a load. The battery pack is used to power a load. The electric equipment can be an energy storage product, a mobile phone, a tablet, an unmanned aerial vehicle, a single wheel or an electric vehicle with more than two wheels, or an electric cleaning tool and the like. For example, for the above-mentioned unmanned aerial vehicle, a battery pack is mounted on the unmanned aerial vehicle, and the battery pack is used for supplying power to loads including a flight system, a control system, a camera system, and the like on the unmanned aerial vehicle.

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

Claims (13)

1. A battery pack, comprising:

a housing provided with a housing space;

the electric core assembly is arranged in the shell space;

the first insulating part is arranged between the electric core assembly and the shell;

the first bracket is arranged in the shell space and comprises an insulating material, and the first bracket part is arranged on the first insulating part;

the electric connection assembly comprises a first electric connection piece, and the first electric connection piece is arranged on one side, away from the first insulating piece, of the first support;

wherein the first bracket, the housing and the first insulating member form a first space.

2. The battery pack of claim 1, wherein the first insulating member is formed by post-curing a first insulating material disposed between the periphery of the electric core assembly and the outer casing.

3. The battery pack according to any one of claims 1 or 2, wherein a first gap exists between the first holder and the first insulating member.

4. The battery pack according to claim 3,

the first support comprises a first part and a second part, the second part is arranged on one side, close to the first insulating part, of the first part, the second part is arranged in the first insulating part, and the first gap exists between the first part and the first insulating part.

5. The battery pack according to claim 4,

the battery core assembly comprises a plurality of battery cells which are stacked along a first direction, each battery cell comprises an electrode assembly, an encapsulating shell and a tab, and the encapsulating shell comprises a containing part and a sealing part which extends outwards from the containing part;

in a direction opposite to the first direction, a projection of the accommodating portion is located within an area formed by a projection of the second portion.

6. The battery pack according to claim 5,

the first portion comprises a first bottom wall and four first side walls, the first bottom wall and the four first side walls form a first concave portion, and the first electric connecting piece is arranged in the first concave portion.

7. The battery pack of claim 6, wherein the second portion includes four second side walls extending from the first bottom wall in a direction away from the four first side walls.

8. The battery pack of claim 6, wherein the electrical connection assembly further comprises a second electrical connector coupled to the electrical core assembly and a second bracket coupled to the first bracket, the second electrical connector partially disposed on a side of the second bracket remote from the first bracket.

9. The battery pack of claim 8, wherein at least one of the four first side walls is provided with a third recess, and the second holder includes a first protrusion provided in the third recess.

10. The battery pack according to claim 9,

the shell comprises a first shell and a second shell, the first shell is provided with a second space, the second shell is provided with a third space, the second shell is arranged on the first shell, the second space and the third space enclose to form the shell space, and the first bracket, the first shell and the first insulating part form the first space;

the second shell is provided with a second convex part which extends into the second space;

along the first direction, the projection of the second convex part is at least partially overlapped with the projection of the second bracket.

11. The battery pack of claim 10, wherein along the first direction, a projection of the second protrusion is at least partially within a projection of a third recess.

12. The battery pack of claim 10, further comprising a fourth insulator disposed between the first and second housings.

13. An electrical device comprising a battery pack according to any one of claims 1 to 12.

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