CN116315477A

CN116315477A - Battery pack and external device

Info

Publication number: CN116315477A
Application number: CN202211727875.2A
Authority: CN
Inventors: 刘小平; 彭芳桂
Original assignee: Xiamen Xinnengda Technology Co Ltd
Current assignee: Xiamen Xinnengda Technology Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-23

Abstract

The application discloses group battery and external equipment, group battery include casing, support, electric core subassembly, first circuit board, first connecting piece and second connecting piece. The housing includes a first housing and a second housing. The bracket is arranged between the first shell and the second shell and extends out of the first shell. The battery cell assembly is accommodated in the first shell. The first circuit board is connected with the bracket. The first circuit board is connected with the battery core component. The first connecting piece is connected with the first circuit board. The second connecting piece is connected with the part of the support extending out of the first shell. The second connecting piece and the first connecting piece are detachably connected. The second connecting piece comprises a second conductive part. The second conductive part is connected with the first connecting piece. Above-mentioned group battery can dismantle through the second connecting piece and be connected in first connecting piece, can protect first connecting piece, is convenient for carry out dismouting to the second connecting piece and changes, reduces the influence to group battery seal structure.

Description

Battery pack and external device

Technical Field

The application relates to the technical field of energy storage, in particular to a battery pack and external equipment.

Background

The conductive part of the power interface of the general battery is exposed in the external environment, so that the conductive part of the power interface is easy to generate chemical corrosion or electrochemical corrosion, the impedance of the power interface in contact with external equipment is increased, the heating temperature rise is serious, and the safety problem is easy to generate.

The power interface of the current battery is fixed on a circuit board, and the circuit board is sealed in the shell, so that the disassembly, the replacement and the maintenance are not facilitated, the maintenance cost is high, and the battery pack integral sealing structure is extremely easy to damage after the power interface is disassembled and assembled.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a battery pack and an external device that are easy to assemble and disassemble, and that reduce the impact on the sealing structure of the battery pack.

The embodiment of the application provides a group battery, including casing, support, electric core subassembly, first circuit board, first connecting piece and second connecting piece, the casing includes first casing and second casing, and the support is located between first casing and the second casing, and stretch out first casing, electric core subassembly hold in the first casing, first circuit board connects the support, first circuit board connects electric core subassembly, first connecting piece connects first circuit board, the second connecting piece is connected the support stretches out the part of first casing, the second connecting piece with first connecting piece can dismantle the connection, the second connecting piece includes the electrically conductive portion of second, the electrically conductive portion of second is connected first connecting piece.

Above-mentioned group battery passes the electric energy of electric core subassembly through the second connecting piece, and can dismantle through the second connecting piece and connect in first connecting piece, can protect first connecting piece, is convenient for dismantle the second connecting piece and change, reduces to dismantle the condition that casing and first circuit board changed first connecting piece, and then reduces the influence to group battery seal structure.

In some embodiments of the present application, a portion of the support extending out of the first housing is provided with a through hole, one end of the second conductive portion passes through the through hole and is connected with the first connecting piece, the other end protrudes out of the support, and the second conductive portion is connected with an external device through the through hole.

In some embodiments of the present application, the first connector includes a first insulating portion and a first conductive portion, the first insulating portion includes a first base portion and a plurality of first protruding portions, the plurality of first protruding portions are disposed at intervals in the first base portion, each of the first protruding portions is provided with the first conductive portion, one end of the first conductive portion passes through the first base portion and is connected to the first circuit board, and the other end is connected to the second conductive portion.

In some embodiments of the present application, a side of the support facing the first circuit board is provided with a first extension portion and forms an accommodating space, and the plurality of first protruding portions are disposed in the accommodating space, so that the first conductive portions in the first protruding portions can be insulated and protected by the first extension portion.

In some embodiments of the present application, along the first direction, the projection of the first protruding portion is located within the projection of the first extension portion, and insulation protection may be further performed on the first conductive portion within the first protruding portion.

In some embodiments of the present application, the first base is disposed in the accommodating space, and the first protrusion and the first conductive portion in the first base can be further insulated and protected by the first extension portion.

In some embodiments of the present application, the second connector includes a second insulating portion, the second insulating portion includes a second base and a second protrusion, the second protrusion connects the second insulating portion and forms a first space, the second protrusion is disposed in the accommodating space, the first protrusion is disposed in the first space, the second protrusion is disposed between the first extending portion and the first protrusion, insulation protection can be performed on the second conductive portion and the first conductive portion, and the second conductive portion is convenient to connect the first conductive portion.

In some embodiments of the present application, be equipped with the first isolation portion that a plurality of intervals set up in the first space, every first isolation portion is located between the adjacent second conductive part, and first conductive part is connected to the one end of second conductive part, and the other end is to the direction protrusion second insulation portion that deviates from the second convex part, can carry out insulation protection to second conductive part through first isolation portion, reduces the risk of short circuit.

In some embodiments of the present application, the first seal is disposed between the second protrusion and the first protrusion, which may further increase the sealability between the first protrusion and the second protrusion.

In some embodiments of the present application, the second connector further comprises a third protrusion. The third convex part protrudes out of the bracket, is connected with one side of the second base part, which is away from the second convex part, and forms a second space. One end of the second conductive part, which is away from the second convex part, is arranged in the second space, so that the second conductive part is convenient to be connected with external equipment.

In some embodiments of the present application, the first conductive portion includes a first signal conductive portion and two first power conductive portions. The first signal conducting part is positioned between the two first power conducting parts, a plurality of second isolating parts are arranged in the second space at intervals, and the second conducting parts comprise a second signal conducting part and two second power conducting parts. The second isolation part is arranged between the second signal conducting part and the second power conducting part. Each second conductive part can be insulated and protected through the second isolation part, so that the risk of short circuit is reduced.

In some embodiments of the present application, the second connecting piece further includes a second extension portion, the second extension portion is connected to the second insulation portion, the second extension portion is connected to the support, and a second sealing piece is disposed between the second extension portion and the support, so that tightness between the second connecting piece and the support can be increased.

In some embodiments of the present application, a receiving recess is disposed on a side of the first base facing away from the first protrusion, the receiving recess is located between the adjacent first conductive portions, and an insulating member is disposed between the receiving recess and the first circuit board, so that the adjacent first conductive portions protruding from the first base can be insulated and protected.

In some embodiments of the present application, the first circuit board includes a BMS assembly (Battery Management System), and the BMS assembly includes a plurality of electronic components, and a plurality of electronic components can realize functions such as data acquisition, control, protection, communication, electric quantity calculation, signal transmission, electric energy transmission to the battery.

In some embodiments of the present application, the bracket includes a first portion and a second portion, the first portion is connected to the second portion, the same side of the first portion and the second portion is connected to the second housing along the third direction, the other side of the first portion is connected to the first housing, and the second portion protrudes from the first housing along the first direction.

In some embodiments of the present application, the second portion is provided with a through hole penetrating the second portion in the third direction, and the second connector portion penetrates the through hole and connects the first connector.

In some embodiments of the present application, the through hole is provided with a first recess on a side of the second portion facing away from the second housing, an edge of the first recess is provided with a second recess, and the first recess and the second recess are arranged in a step shape for accommodating the second connector.

In some embodiments of the present application, the second portion is provided with a first extension portion towards one side of the second housing, the first extension portion is provided at an edge of the through hole, the first extension portion is provided to extend along a direction opposite to the third direction Z, and forms an accommodating space, and the partial first connection member and the partial second connection member are provided in the accommodating space.

The embodiment of the application also provides external equipment comprising the battery pack in any embodiment.

Drawings

Fig. 1 shows a schematic diagram of the structure of a battery pack in some embodiments.

Fig. 2 illustrates a schematic diagram of the structure of a battery pack from another perspective in some embodiments.

Fig. 3 shows an exploded schematic view of a battery pack in some embodiments.

Fig. 4 illustrates an exploded view of another view of a battery pack in some embodiments.

Fig. 5 shows a schematic structural view of a stent in some embodiments.

Fig. 6 illustrates a schematic structural view of another view of a stent in some embodiments.

Fig. 7 shows a schematic structural view of the first connector in some embodiments.

Fig. 8 illustrates a schematic diagram of another view of the first connector in some embodiments.

Fig. 9 illustrates an exploded view of a first connector in some embodiments.

Fig. 10 shows a schematic structural view of the second connector in some embodiments.

Fig. 11 illustrates a schematic structural view of a second connector from another perspective in some embodiments.

Fig. 12 illustrates an exploded view of a second connector in some embodiments.

Fig. 13 shows a schematic cross-sectional view of the second connector of fig. 11 in the direction II-II.

Fig. 14 shows a schematic cross-sectional view of the battery pack of fig. 1 in the direction III-III.

Fig. 15 shows an enlarged schematic view of the V portion in fig. 14.

Fig. 16 shows a schematic structural diagram of an external device in some embodiments.

Description of main reference numerals:

battery pack 100

Housing 10

First housing 11

Accommodating chamber 11a

First side wall 111

Second side wall 112

Third side wall 113

Fourth side wall 114

Bottom wall 115

Second housing 12

Bracket 20

First portion 21

Second portion 22

Through hole 22a

First concave portion 22b

Second concave portion 22c

First connection hole 221

Second connecting hole 222

First extension 223

Accommodation space 22d

First circuit board 30

Cell assembly 40

Cell 41

Second circuit board 42

First electrical connection 421

Second electrical connection 422

Sampling line 423

First connector 50

First insulating portion 51

First base 511

Accommodating recess 511a

First convex portion 512

First connecting projection 512a

Second connecting convex portion 512b

Third connecting protrusion 512c

First seal 512d

First conductive part 52

First signal conductive part 521

First powered conductive portion 522

Second connector 60

Fastener 60a

Second conductive part 61

Second signal conductive part 611

Second power conducting part 612

First section 61a

Second section 61b

Third section 61c

Second insulating portion 62

A second base 621

Second convex portion 622

First space 62a

First separator 621a

Second extension 63

Second seal 63a

Third connecting hole 631

Fourth connection hole 632

Third convex portion 64

Second space 64a

Second isolation portion 641a

External device 200

First direction X

Second direction Y

Third direction Z

The following specific embodiments will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.

When an element is referred to as being "disposed" on 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 also be present.

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 herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

It will be appreciated that when the two elements are arranged in parallel/perpendicular, the angle between the two elements allows a tolerance of 0- ±5%, for example when the two elements are vertically toleranced, wherein one element is inclined towards or away from the other element, the tolerance between the two elements being in the range of greater than 0 ° and less than or equal to 4.5 °. When the projections of the two elements are identical or overlap, a tolerance of 0- + -10% is allowed between the two elements, e.g., the projection of one element is identical to the projection of the other element, and the projection has a tolerance of 0- + -10%.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without collision.

Referring to fig. 1 to 6, an embodiment of the present application provides a battery pack 100, which includes a housing 10, a bracket 20, a first circuit board 30, a battery cell assembly 40, a first connector 50 and a second connector 60. The bracket 20 is connected to the housing 10 and partially extends out of the housing 10, the battery cell assembly 40 is accommodated in the housing 10, the first circuit board 30 is connected to the bracket 20, and the first circuit board 30 is also connected to the battery cell assembly 40. The first connector 50 is connected to the first circuit board 30, the second connector 60 is mounted on a portion of the bracket 20 extending out of the housing 10, the second connector 60 is detachably connected to the first connector 50, and the second connector 60 is used for being connected to an external device. The electric energy of the electric core assembly 40 is transmitted through the second connecting piece 60, and the electric core assembly is detachably connected to the first connecting piece 50 through the second connecting piece 60, so that the first connecting piece 50 can be protected, the second connecting piece 60 can be conveniently disassembled, assembled and replaced, the situation that the shell 10 and the first circuit board 30 are disassembled to replace the first connecting piece 50 is reduced, and further the influence on the sealing structure of the battery pack is reduced.

In some embodiments, the external device may be a powered device, and battery pack 100 provides power to the powered device. In some embodiments, the external device may be a charging device, and the battery pack 100 charges the cell assembly 40 through the second connection 60.

In some embodiments, the bracket 20 provides an injection molding process to form an integrally molded structure. In some embodiments, the bracket 20 is formed as a unitary structure by passing a metallic material through an extrusion process.

Referring to fig. 3 and 4, in an embodiment, the housing 10 includes a first housing 11 and a second housing 12, the first housing 11 is provided with a receiving cavity 11a, and the battery cell assembly 40 is disposed in the receiving cavity 11a. The first housing 11 and the second housing 12 are located at both sides of the bracket 20, the first housing 11 is connected to one side of the bracket 20, and the second housing 12 is connected to the other side of the bracket 20.

The first housing 11 includes a first side wall 111, a second side wall 112, a third side wall 113, a fourth side wall 114, and a bottom wall 115. The first side wall 111 and the second side wall 112 are connected to the bottom wall 115, and the first side wall 111 and the second side wall 112 are arranged at intervals. The third side wall 113 and the fourth side wall 114 are connected to the bottom wall 115, and the third side wall 113 and the fourth side wall 114 are arranged at intervals. The third sidewall 113 further connects the first sidewall 111 and the second sidewall 112, and the fourth sidewall 114 further connects the first sidewall 111 and the second sidewall 112, and forms the accommodating chamber 11a. The bracket 20 connects the first side wall 111, the second side wall 112, the third side wall 113, and the fourth side wall 114. Alternatively, the first, second, third, fourth and

bottom walls

111, 112, 113, 114, 115 may be coupled to the first housing 11 by screw locking, welding or bonding, etc. Alternatively, the first side wall 111, the second side wall 112, the third side wall 113, the fourth side wall 114 and the bottom wall 115 may also be integrally formed, such as by providing an injection molding process to form an integrally formed structure, such as by passing a metallic material through an extrusion process to form an integrally formed structure.

For better description of the structure of the battery pack 100, the structure of the battery pack 100 will be described with reference to the X, Y, Z coordinate axis, the X, Y, Z coordinate axis is perpendicular to each other, the X direction is defined as the first direction, the Y direction is the second direction, and the Z direction is the third direction, wherein the first direction X is the direction in which the first side wall 111 and the second side wall 112 are aligned, the second direction Y is the direction in which the third side wall 113 and the fourth side wall 114 are aligned, the third direction Z is the direction in which the second case 12 and the first case 11 are aligned, and the first direction X is perpendicular to both the second direction Y and the third direction Z.

Referring to fig. 2 to 6, in one embodiment, the bracket 20 includes a first portion 21 and a second portion 22, and the first portion 21 is connected to the second portion 22. In the third direction Z, the same side of the first portion 21 and the second portion 22 is connected to the second housing 12, the other side of the first portion 21 is connected to the first housing 11, and the second portion 22 protrudes from the first housing 11 in the first direction X. Along the third direction Z, the projection of the first connector 50 overlaps the projection of the second portion 22, and the projection of the second connector 60 overlaps the projection of the second portion 22.

A second connector 60 emerges from the side of the second portion 22 facing away from the second housing 12 for connection to an external device.

In an embodiment, the second portion 22 is provided with a through hole 22a, the through hole 22a penetrating the second portion 22 in the third direction Z. The second connector 60 partially passes through the through hole 22a and connects the first connector 50. The through hole 22a is provided with a first recess 22b at a side of the second portion 22 facing away from the second housing 12, a second recess 22c is provided at an edge of the first recess 22b, and the first recess 22b and the second recess 22c are arranged in a stepped manner for accommodating the second connecting member 60. In the second direction Y, both ends of the second recess 22c are provided with first and second coupling holes 221 and 222 for fixing the second coupling member 60.

In one embodiment, a first extension portion 223 is disposed on a side of the second portion 22 facing the second housing 12, the first extension portion 223 is disposed at an edge of the through hole 22a, and the first extension portion 223 extends in a direction opposite to the third direction Z and forms the accommodating space 22d. A part of the first coupling member 50 and a part of the second coupling member 60 are disposed in the accommodation space 22d.

In one embodiment, the first circuit board 30 is disposed between the bracket 20 and the second housing 12. The first circuit board 30 is fixed to a side of the bracket 20 facing the second housing 12.

In one embodiment, the first circuit board 30 may collect information about the current, voltage, resistance, temperature, etc. of the cell assembly 40. Optionally, the first circuit board 30 includes a BMS assembly (Battery Management System), and specifically, the BMS assembly includes a plurality of electronic components, and the plurality of electronic components can realize functions such as data acquisition, control, protection, communication, electric quantity calculation, signal transmission, electric energy transmission to the battery. Optionally, the first circuit board 30 includes a flexible circuit board (FPC, flexible Printed Circuit). Optionally, the first circuit board 30 includes a printed circuit board (PCB, printed Circuit Board), and a plurality of wires (not shown) are disposed on the first circuit board 30.

Referring to fig. 3 and 4, in an embodiment, the battery cell assembly 40 includes a plurality of battery cells 41 arranged along the second direction Y and a second circuit board 42. The electrode terminal 41a of each cell 41 passes through the second circuit board 42 and is connected to the second circuit board 42.

In one embodiment, the second circuit board 42 is provided with a first electrical connection portion 421 and a second electrical connection portion 422, and the first electrical connection portion 421 and the second electrical connection portion 422 pass through the bracket 20 and are connected to the first circuit board 30.

In an embodiment, the second circuit board 42 is further provided with a plurality of sampling lines 423, and the plurality of sampling lines 423 penetrate through the bracket 20 and are connected to the first circuit board 30 to collect information such as current, voltage, resistance, temperature and the like of the plurality of electric cells 41.

Referring to fig. 2, 3 and 7 to 9, in an embodiment, the first connector 50 includes a first insulating portion 51 and a first conductive portion 52, the first conductive portion 52 connects the first insulating portion 51 and the first circuit board 30, the first insulating portion 51 connects the second connector 60, and the first conductive portion 52 connects the second connector 60.

In an embodiment, the first insulating portion 51 includes a first base portion 511 and a plurality of first protruding portions 512, the plurality of first protruding portions 512 are disposed on the first base portion 511 at intervals along the second direction Y, and the first conductive portion 52 is disposed in each of the first protruding portions 512. Alternatively, one end of the first conductive part 52 passes through the first base 511 and is soldered to the first circuit board 30, and the other end is disposed in the first protrusion 512. Alternatively, the first conductive part 52 is fixed to the first base 511 by heat fusion, crimping, or in-mold injection.

In one embodiment, a plurality of accommodating recesses 511a are provided on a side of the first base 511 facing away from the first protrusion 512. The accommodation concave portions 511a are located between adjacent first convex portions 512 as viewed in the third direction Z. The first base 511 is connected to the first circuit board 30 at a side facing away from the first protrusion 512, and an insulating member is disposed between the accommodating recess 511a and the first circuit board 30, so that adjacent first conductive portions 52 protruding from the first base 511 can be insulated and protected. Optionally, the insulating member comprises an insulating glue. Optionally, the insulating glue comprises one of pouring sealant, foaming glue and sealing glue.

In one embodiment, the first conductive portion 52 includes a first signal conductive portion 521 and two first power conductive portions 522, with the first signal conductive portion 521 being located between the two first power conductive portions 522. The plurality of first protrusions 512 includes first, second and

third connection protrusions

512a, 512b and 512c disposed at intervals. One of the two first power conducting parts 522 is provided at the first connecting protrusion 512a, and the other is provided at the third connecting protrusion 512c. The first signal conductive portion 521 is provided on the second connection protrusion 512b. One of the two first power conducting portions 522 is a total positive terminal, and the other is a total negative terminal. The first signal conductive portion 521 may be used to transmit information on the current, voltage, resistance, temperature, etc. of the battery cell 41.

One end of the first signal conductive part 521 extends out of the first base 511 and is connected to the first circuit board 30, and the other end is disposed in the second connection protrusion 512b. One end of one of the two first power conducting parts 522 extends out of the first base part 511 and is connected to the first circuit board 30, and the other end is arranged in the first connecting protrusion 512 a. One end of the other of the two first power conducting parts 522 extends out of the first base 511 and is connected to the first circuit board 30, and the other end is provided in the third connecting protrusion 512c. The accommodating recess 511a is located between the first signal conductive portion 521 and the first power conductive portion 522 protruding from the first base 511, as viewed in the third direction Z, and can insulate and protect one ends of the first signal conductive portion 521 and the first power conductive portion 522 protruding from the first base 511.

Alternatively, each of the first protruding portions 512 may be provided with a plurality of first conductive portions 52 of the same kind, for example, two first power conductive portions 522 are disposed in the same first connecting protruding portion 512a at intervals, and four first signal conductive portions 521 are disposed in the same second connecting protruding portion 512b at intervals.

In one embodiment, the plurality of first protrusions 512 are disposed in the accommodating space 22d. In the first direction X, the projection of the first protruding portion 512 overlaps the projection of the first extending portion 223, and the first conductive portion 52 in the first protruding portion 512 can be insulated and protected by the first extending portion 223. Optionally, along the first direction X, the projection of the first protruding portion 512 is located in the projection of the first extending portion 223, and the first conductive portion 52 in the first protruding portion 512 may be further insulated and protected.

In one embodiment, the plurality of first protrusions 512 and the first base 511 are disposed within the accommodation space 22d. Along the first direction X, the projection of the first protruding portion 512 is located within the projection of the first extending portion 223, and the projection of the first base portion 511 overlaps with the projection of the first extending portion 223, so that the first protruding portion 512 and the first conductive portion 52 within the first base portion 511 can be insulated and protected by the first extending portion 223. Optionally, along the first direction X, the projection of the first protruding portion 512 is located in the projection of the first extending portion 223, and the projection of the first base portion 511 is located in the projection of the first extending portion 223, so that the first protruding portion 512 and the first conductive portion 52 in the first base portion 511 can be further insulated and protected by the first extending portion 223.

Referring to fig. 10-15, in an embodiment, the second connection member 60 includes a second conductive portion 61 (the second conductive portion 61 is not shown in fig. 15). When the second connection member 60 is connected to the first connection member 50, one end of the second conductive part 61 passes through the through hole 22a and is connected to the first conductive part 52, and the other end protrudes out of the bracket 20, so that connection with external equipment is facilitated.

Optionally, the second conductive portion 61 includes a first section 61a, a second section 61b, and a third section 61c, and the second section 61b connects the first section 61a and the third section 61c. The first section 61a is for connection to the first connector 50 and the third section 61c is for connection to an external device.

In an embodiment, the second connection member 60 further includes a second insulation portion 62, the second insulation portion 62 includes a second base portion 621 and a second protrusion 622, and the second protrusion 622 is connected to the second base portion 621 and forms a first space 62a. The second section 61b is fixed in the second base 621, and the first section 61a is provided in the first space 62a. When the second connector 60 is connected to the first connector 50, the second protrusion 622 is disposed in the accommodating space 22d, the first protrusion 512 is disposed in the first space 62a, the second protrusion 622 is disposed between the first extension 223 and the first protrusion 512, the first section 61a is connected to the first conductive portion 52, the second protrusion 622 is disposed between the first extension 223 and the first protrusion 512, insulation protection can be performed on the first section 61a and the first conductive portion 52, and the first section 61a is convenient to connect to the first conductive portion 52.

In an embodiment, a plurality of first isolation portions 621a are disposed in the first space 62a at intervals along the second direction Y, each first isolation portion 621a is disposed between adjacent first sections 61a, and each first section 61a can be insulated and protected by the first isolation portion 621a, so as to reduce the risk of short circuit. When the second connector 60 is connected to the first connector 50, each of the first protrusions 512 is insulated by the first separator 621 a. The first section 61a connects to the first conductive portion 52, and the third section 61c protrudes from the second base 621 in a direction away from the second protruding portion 622.

Alternatively, when the second connection member 60 is connected to the first connection member 50, the second protrusions 622 contact-connect the first extension portions 223, and each of the first protrusions 512 contact-connect each of the first barrier portions 621a, the sealability between the second protrusions 622 and the first extension portions 223 and the sealability between the first protrusions 512 and the first barrier portions 621a may be increased.

Optionally, each first protrusion 512 is provided with a first sealing element 512d, and when the first protrusions 512 are disposed in the first isolation portion 621a, the first sealing element 512d is disposed between each first protrusion 512 and the second protrusion 622, so that the sealing performance between the first protrusions 512 and the second protrusions 622 can be further increased.

In one embodiment, the second connector 60 further includes a second extension 63, the second extension 63 being connected to the second base 621. The second extension 63 is disposed in the first recess 22b, and the third connection hole 631 and the fourth connection hole 632 are disposed at both ends of the second extension 63. When the second coupling member 60 is fixed to the bracket 20, the fastener 60a passes through the third coupling hole 631 and is coupled to the first coupling hole 221, and the other fastener 60a passes through the fourth coupling hole 632 and is coupled to the second coupling hole 222. Optionally, the fastener 60a comprises a bolt.

In an embodiment, the second sealing member 63a is disposed between the second extension portion 63 and the first recess 22b, so as to increase the sealing performance between the second connecting member 60 and the bracket 20.

In an embodiment, the second connecting member 60 further includes a third protruding portion 64, the third protruding portion 64 is connected to a side of the second base portion 621 facing away from the second protruding portion 622 and forms a second space 64a, and the third section 61c is disposed in the second space 64a. The third protrusion 64 protrudes from the through hole 22a toward the holder 20 to facilitate connection with an external device.

In an embodiment, a plurality of second isolation portions 641a are disposed in the second space 64a at intervals along the second direction Y, each second isolation portion 641a is disposed between adjacent third sections 61c, and each third section 61c can be insulated and protected by the second isolation portion 641a, so as to reduce the risk of short circuit.

In an embodiment, the second conductive portion 61 includes a second signal conductive portion 611 and two second power conductive portions 612, the second signal conductive portion 611 being located between the two second power conductive portions 612. The first separator 621a is located between the first section 61a of the second signal conductive portion 611 and the first section 61a of the adjacent second power conductive portion 612. The second isolation portion 641a is located between the third section 61c of the second signal conductive portion 611 and the third section 61c of the adjacent second power conductive portion 612. The second signal conductive portion 611 and the first sections 61a of the two second power conductive portions 612 are used to connect the first conductive portions 52. When the first protruding portion 512 is disposed in the first isolation portion 621a, the second signal conductive portion 611 is connected to the first signal conductive portion 521, the second power conductive portion 612 is connected to the first power conductive portion 522, and the other second power conductive portion 612 is connected to the other first power conductive portion 522. The second signal conductive part 611 and the third sections 61c of the two second power conductive parts 612 are used for connecting external devices.

Alternatively, the second conductive portion 61 is fixed to the second base portion 621 by heat fusion, crimping, or in-mold injection molding.

Referring to fig. 16, the present application also provides an external device 200 employing the above-mentioned battery pack 100. In an embodiment, the external device 200 of the present application may be, but is not limited to, an electronic device, an unmanned aerial vehicle, a standby power supply, an electric automobile, an electric motorcycle, an electric power assisted bicycle, an electric tool, a household large-sized battery, and the like.

It will be appreciated by those skilled in the art that the above embodiments are provided for illustration only and not as limitations of the present application, and that suitable modifications and variations of the above embodiments are within the scope of the disclosure of the present application as long as they are within the true spirit of the present application.

Claims

1. A battery pack, comprising:

a housing including a first housing and a second housing;

the bracket is arranged between the first shell and the second shell and extends out of the first shell;

a battery cell assembly housed within the first housing;

the first circuit board is connected with the bracket and is connected with the battery cell assembly;

a first connecting piece connected with the first circuit board;

the second connecting piece is connected with the part, extending out of the first shell, of the support, the second connecting piece is detachably connected with the first connecting piece, the second connecting piece comprises a second conductive part, and the second conductive part is connected with the first connecting piece.

2. The battery pack according to claim 1, wherein a portion of the bracket extending out of the first housing is provided with a through hole, one end of the second conductive portion passes through the through hole and is connected to the first connecting member, and the other end protrudes out of the bracket.

3. The battery pack according to claim 2, wherein the first connection member includes a first insulating portion and a first conductive portion, the first insulating portion includes a first base portion and a plurality of first protruding portions provided at intervals to the first base portion, each of the first protruding portions is provided with the first conductive portion, one end of the first conductive portion passes through the first base portion and is connected to the first circuit board, and the other end is connected to the second conductive portion.

4. The battery pack according to claim 3, wherein a side of the bracket facing the first circuit board is provided with a first extension portion and forms an accommodating space, and the plurality of first protrusions are provided in the accommodating space.

5. The battery of claim 4, wherein the first base is disposed within the receiving space.

6. The battery pack according to claim 4 or 5, wherein the second connection member includes a second insulating portion including a second base portion and a second protruding portion, the second protruding portion connecting the second insulating portion and forming a first space, the second protruding portion being provided in the receiving space, the first protruding portion being provided in the first space, the second protruding portion being located between the first extending portion and the first protruding portion.

7. The battery pack according to claim 6, wherein a plurality of first isolation parts are arranged in the first space at intervals, each first isolation part is arranged between adjacent second conductive parts, one end of each second conductive part is connected with the first conductive part, and the other end of each second conductive part protrudes out of the second insulating part in a direction away from the second protruding part.

8. The battery of claim 7, wherein a first seal is disposed between the second protrusion and the first protrusion.

9. The battery pack of claim 7, wherein the second connector further comprises a third protrusion protruding from the bracket, the third protrusion connecting a side of the second base facing away from the second protrusion and forming a second space, an end of the second conductive portion facing away from the second protrusion being provided in the second space.

10. The battery of claim 9, wherein the first conductive portion comprises a first signal conductive portion and two first power conductive portions, the first signal conductive portion being located between the two first power conductive portions;

the second space is internally provided with a plurality of second isolation parts which are arranged at intervals, the second conductive parts comprise second signal conductive parts and two second power conductive parts, and the second isolation parts are arranged between the second signal conductive parts and the second power conductive parts.

11. The battery of claim 6, wherein the second connector further comprises a second extension, the second extension is connected to the second insulating portion, the second extension is connected to the bracket, and a second seal is disposed between the second extension and the bracket.

12. A battery pack as claimed in claim 3, wherein a receiving recess is provided in a side of the first base portion facing away from the first protruding portion, the receiving recess being located between the adjacent first conductive portions, and an insulating member is provided between the receiving recess and the first circuit board.

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