Battery pack and external device

Abstract

The application discloses a battery pack and an external device. The battery pack comprises a shell, a support, a cell assembly, a first circuit board, a first connecting piece and a second connecting piece. The shell comprises a first shell and a second shell. The support is arranged between the first shell and the second shell and extends out of the first shell. The cell assembly is accommodated in the first shell. The first circuit board is connected to the support. The first circuit board is connected to the cell assembly. The first connecting piece is connected to the first circuit board. The second connecting piece is connected to the part of the support extending out of the first shell. The second connecting piece is detachably connected to the first connecting piece. The second connecting piece comprises a second conductive part. The second conductive part is connected to the first connecting piece. The battery pack is detachably connected to the first connecting piece through the second connecting piece, the first connecting piece can be protected, the second connecting piece can be disassembled and replaced, and the influence on the sealing structure of the battery pack is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a battery pack and an external device. BACKGROUND

[0002] The conductive part of the power interface of a general battery is exposed to the external environment, which is easy to cause chemical corrosion or electrochemical corrosion of the conductive part of the power interface, increase the impedance of the contact between the power interface and the external device, cause serious heat generation and temperature rise, and easily cause safety problems.

[0003] The power interface of the current battery is fixed on the circuit board, and the circuit board is sealed in the shell, which is not conducive to disassembly, replacement and maintenance, has high maintenance cost, and is easy to damage the overall sealing structure of the battery pack after disassembly of the power interface. SUMMARY

[0004] Therefore, it is necessary to provide a battery pack and an external device, which are convenient to disassemble, replace and reduce the influence on the sealing structure of the battery pack.

[0005] Embodiments of the present application provide a battery pack, which comprises a shell, a support, a cell assembly, a first circuit board, a first connecting piece and a second connecting piece. The shell comprises a first shell and a second shell. The support is arranged between the first shell and the second shell and extends out of the first shell. The cell assembly is accommodated in the first shell. The first circuit board is connected to the support. The first circuit board is connected to the cell assembly. The first connecting piece is connected to the first circuit board. The second connecting piece is connected to 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 to the first connecting piece.

[0006] The above battery pack transmits the electric energy of the cell assembly through the second connecting piece, and the second connecting piece is detachably connected to the first connecting piece, so as to protect the first connecting piece, facilitate disassembly, replacement and maintenance of the second connecting piece, reduce the case of replacing the first connecting piece by disassembling the shell and the first circuit board, and further reduce the influence on the sealing structure of the battery pack.

[0007] In some embodiments of the present application, the part of the support extending out of the first shell is provided with a through hole. One end of the second conductive part penetrates through the through hole and is connected to the first connecting piece, and the other end protrudes out of the support. The second conductive part is connected to the external device through the through hole.

[0008] In some embodiments of the present application, the first connector comprises a first insulating part and a first conductive part, the first insulating part comprises a first base and a plurality of first protrusions, the plurality of first protrusions are arranged at intervals on the first base, each of the first protrusions is provided with the first conductive part, one end of the first conductive part penetrates the first base and is connected to the first circuit board, and the other end is connected to the second conductive part.

[0009] In some embodiments of the present application, the side of the support facing the first circuit board is provided with a first extension and forms an accommodation space, the plurality of first protrusions are arranged in the accommodation space, and the first conductive part in the first protrusion can be insulated and protected by the first extension.

[0010] In some embodiments of the present application, in the first direction, the projection of the first protrusion is located within the projection of the first extension, and the first conductive part in the first protrusion can be further insulated and protected.

[0011] In some embodiments of the present application, the first base is arranged in the accommodation space, and the first conductive part in the first protrusion and the first base can be further insulated and protected by the first extension.

[0012] In some embodiments of the present application, the second connector comprises a second insulating part, the second insulating part comprises a second base and a second protrusion, the second protrusion is connected to the second insulating part and forms a first space, the second protrusion is arranged in the accommodation space, the first protrusion is arranged in the first space, and the second protrusion is located between the first extension and the first protrusion, so as to insulate and protect the second conductive part and the first conductive part, and facilitate the connection of the second conductive part and the first conductive part.

[0013] In some embodiments of the present application, a plurality of first isolation parts are arranged at intervals in the first space, each of the first isolation parts is arranged between adjacent second conductive parts, one end of the second conductive part is connected to the first conductive part, and the other end of the second conductive part protrudes out of the second insulating part in a direction away from the second protrusion, so as to insulate and protect the second conductive part by the first isolation part, and reduce the risk of short circuit.

[0014] In some embodiments of the present application, a first sealing member is arranged between the second protrusion and the first protrusion, so as to further increase the sealing property between the first protrusion and the second protrusion.

[0015] In some embodiments of the present application, the second connector further comprises a third protrusion. The third protrusion protrudes from the support, the third protrusion is connected to the side of the second base away from the second protrusion and forms a second space. The end of the second conductive part away from the second protrusion is arranged in the second space, so as to facilitate the connection with external equipment.

[0016] In some embodiments of the present application, the first conductive part includes a first signal conductive part and two first power conductive parts. The first signal conductive part is located between the two first power conductive parts. The second space is provided with a plurality of second isolation parts arranged at intervals. The second conductive part includes a second signal conductive part and two second power conductive parts. The second isolation part is arranged between the second signal conductive part and the second power conductive part. Each second conductive part can be insulated and protected by the second isolation part, thereby reducing the risk of short circuit.

[0017] In some embodiments of the present application, the second connecting piece further includes a second extension part connected to the second insulating part. The second extension part is connected to the support. A second sealing member is arranged between the second extension part and the support, thereby increasing the sealing performance of the second connecting piece and the support.

[0018] In some embodiments of the present application, the first base part is provided with a receiving recess on the side away from the first protruding part. The receiving recess is arranged between adjacent first conductive parts connected to each other. An insulating member is arranged between the receiving recess and the first circuit board, thereby insulating and protecting the adjacent first conductive parts protruding from the first base part.

[0019] In some embodiments of the present application, the first circuit board includes a BMS component (Battery Management System). The BMS component includes a plurality of electronic components capable of realizing functions such as data acquisition, control, protection, communication, power calculation, signal transmission, and power transmission of the battery.

[0020] In some embodiments of the present application, the support includes a first part and a second part. The first part is connected to the second part. On the same side of the first part and the second part in the third direction, the first part and the second part are connected to the second housing. On the other side of the first part, the first part is connected to the first housing. The second part protrudes from the first housing in the first direction.

[0021] In some embodiments of the present application, the second part is provided with a through hole penetrating the second part in the third direction. The second connecting piece passes through the through hole and is connected to the first connecting piece.

[0022] In some embodiments of the present application, the through hole is provided with a first recess on the side of the second part away from the second housing. An edge of the first recess is provided with a second recess. The first recess and the second recess are arranged in a stepped manner and are used to accommodate the second connecting piece.

[0023] In some embodiments of the present application, the second part is provided with a first extension part on the side facing the second housing. The first extension part is arranged at the edge of the through hole. The first extension part is arranged to extend in the direction opposite to the third direction Z and forms an accommodation space. Part of the first connecting piece and part of the second connecting piece are arranged in the accommodation space.

[0024] The embodiment of the present application also provides an external device, comprising the battery pack in any of the above embodiments.

[0025] The battery pack transmits the electric energy of the cell assembly through the second connecting member, and is detachably connected to the first connecting member through the second connecting member, so that the first connecting member can be protected, the second connecting member can be disassembled and replaced, the case and the first circuit board are not disassembled to replace the first connecting member, and the influence on the sealing structure of the battery pack is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structural schematic diagram of the battery pack in some embodiments is shown.

[0027] Figure 2 A structural schematic diagram of the battery pack in some embodiments is shown.

[0028] Figure 3 A structural schematic diagram of the battery pack in some embodiments is shown.

[0029] Figure 4 A structural schematic diagram of the battery pack in some embodiments is shown.

[0030] Figure 5 A structural schematic diagram of the bracket in some embodiments is shown.

[0031] Figure 6 A structural schematic diagram of the bracket in some embodiments is shown.

[0032] Figure 7 A structural schematic diagram of the first connecting member in some embodiments is shown.

[0033] Figure 8 A structural schematic diagram of the first connecting member in some embodiments is shown.

[0034] Figure 9 A structural schematic diagram of the first connecting member in some embodiments is shown.

[0035] Figure 10 A structural schematic diagram of the second connecting member in some embodiments is shown.

[0036] Figure 11 A structural schematic diagram of the second connecting member in some embodiments is shown.

[0037] Figure 12 A structural schematic diagram of the second connecting member in some embodiments is shown.

[0038] Figure 13 A structural schematic diagram of the second connecting member in some embodiments is shown. Figure 11 A sectional schematic diagram of the second connecting member in some embodiments is shown.

[0039] Figure 14 A cross-sectional view of the battery pack along the III-III direction is shown. Figure 1

[0040] Figure 15 An enlarged view of the V portion is shown. Figure 14

[0041] Figure 16 A structural schematic diagram of an external device in some embodiments is shown.

[0042] Explanation of main element symbols:

[0043] Battery pack 100

[0044] Housing 10

[0045] First housing 11

[0046] Receiving cavity 11a

[0047] First side wall 111

[0048] Second side wall 112

[0049] Third side wall 113

[0050] Fourth side wall 114

[0051] Bottom wall 115

[0052] Second housing 12

[0053] Support 20

[0054] First portion 21

[0055] Second portion 22

[0056] Through hole 22a

[0057] First recess 22b

[0058] Second recess 22c

[0059] First connecting hole 221

[0060] Second connecting hole 222

[0061] First extension 223

[0062] Receiving space 22d

[0063] First circuit board 30

[0064] Battery cell assembly 40

[0065] Battery cell 41 ​​

[0066] Second circuit board 42

[0067] First electrical connection portion 421

[0068] Second electrical connection portion 422

[0069] Sampling line 423

[0070] First connecting member 50

[0071] First insulating portion 51

[0072] First base portion 511

[0073] Accommodating recess 511a

[0074] First protruding portion 512

[0075] First connecting protruding portion 512a

[0076] Second connecting protruding portion 512b

[0077] Third connecting protruding portion 512c

[0078] First sealing member 512d

[0079] First conductive portion 52

[0080] First signal conductive portion 521

[0081] First power conductive portion 522

[0082] Second connecting member 60

[0083] Fastener 60a

[0084] Second conductive portion 61

[0085] Second signal conductive portion 611

[0086] Second power conductive portion 612

[0087] First section 61a

[0088] Second section 61b

[0089] Third section 61c

[0090] Second insulating portion 62

[0091] Second base portion 621

[0092] Second protruding portion 622

[0093] First space 62a

[0094] First isolating portion 621a

[0095] second extension 63

[0096] second seal 63a

[0097] third connecting hole 631

[0098] fourth connecting hole 632

[0099] third protrusion 64

[0100] second space 64a

[0101] second isolation portion 641a

[0102] external device 200

[0103] first direction X

[0104] second direction Y

[0105] third direction Z

[0106] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0107] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0108] When one component is considered to be "provided on" another component, it can be directly provided on the other component or a middle component can be present at the same time. When one component is considered to be "connected" to another component, it can be directly connected to the other component or a middle component can be present at the same time.

[0109] Unless otherwise defined, 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 application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0110] It can be understood that when two elements are arranged in parallel / vertically, the included angle between the two elements allows a tolerance of 0-±5%, for example, when the two elements are vertically present with a tolerance, one of the elements is inclined towards or away from the other element, and the tolerance range between the two elements is greater than 0° and less than or equal to 4.5°. When the projections of the two elements are the same or overlap, a tolerance of 0-±10% is allowed between the two elements, for example, where one element has the same projection shape as another element, the projection has a tolerance of 0-±10%.

[0111] Some embodiments of the present application will be described in detail with reference to the drawings. The following embodiments and features can be combined with each other, without conflict.

[0112] Referring to Figures 1 to 6 An embodiment of the present application provides a battery pack 100, comprising a housing 10, a support 20, a first circuit board 30, a cell assembly 40, a first connecting member 50 and a second connecting member 60. The support 20 is connected to the housing 10 and partially extends out of the housing 10. The cell assembly 40 is accommodated in the housing 10. The first circuit board 30 is connected to the support 20 and is also connected to the cell assembly 40. The first connecting member 50 is connected to the first circuit board 30. The second connecting member 60 is mounted on the part of the support 20 extending out of the housing 10. The second connecting member 60 is detachably connected to the first connecting member 50. The second connecting member 60 is used to connect to an external device. The electric energy of the cell assembly 40 is transmitted through the second connecting member 60. The second connecting member 60 is detachably connected to the first connecting member 50, so that the first connecting member 50 can be protected. The second connecting member 60 can be easily disassembled and replaced, and the situation that the housing 10 and the first circuit board 30 are disassembled to replace the first connecting member 50 is reduced, thereby reducing the influence on the sealing structure of the battery pack.

[0113] In some embodiments, the external device can be an electric device, and the battery pack 100 provides electric energy for the electric device. In some embodiments, the external device can be a charging device, and the battery pack 100 charges the cell assembly 40 through the second connecting member 60.

[0114] In some embodiments, the support 20 provides an integrally formed structure formed by an injection molding process. In some embodiments, the support 20 provides an integrally formed structure formed by an extrusion process of a metal material.

[0115] Referring to Figure 3 and Figure 4 In an embodiment, the housing 10 comprises a first housing 11 and a second housing 12. The first housing 11 is provided with an accommodation cavity 11a, and the cell assembly 40 is arranged in the accommodation cavity 11a. The first housing 11 and the second housing 12 are located on two sides of the support 20. The first housing 11 is connected to one side of the support 20, and the second housing 12 is connected to the other side of the support 20.

[0116] The first shell 11 comprises 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 both connected to the bottom wall 115, and the first side wall 111 and the second side wall 112 are arranged in parallel. The third side wall 113 and the fourth side wall 114 are both connected to the bottom wall 115, and the third side wall 113 and the fourth side wall 114 are arranged in parallel. The third side wall 113 is further connected to the first side wall 111 and the second side wall 112, and the fourth side wall 114 is further connected to the first side wall 111 and the second side wall 112, and forms a containing cavity 11a. The bracket 20 is connected to the first side wall 111, the second side wall 112, the third side wall 113 and the fourth side wall 114. Optionally, 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 can be connected into the first shell 11 by screw locking, welding or bonding. Optionally, 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 can be integrally formed, such as providing an injection molding process to form an integrally formed structure, such as forming an integrally formed structure by extrusion process of metal material.

[0117] In order to better illustrate the structure of the battery pack 100, the structure of the battery pack 100 will be described in combination with X, Y and Z coordinate axes, and the X, Y and Z coordinate axes are perpendicular to each other, and the X direction is defined as the first direction, the Y direction is defined as the second direction, and the Z direction is defined as the third direction. The first direction X is the direction in which the first side wall 111 and the second side wall 112 are arranged, the second direction Y is the direction in which the third side wall 113 and the fourth side wall 114 are arranged, and the third direction Z is the direction in which the second shell 12 and the first shell 11 are arranged. The first direction X is perpendicular to the second direction Y and the third direction Z.

[0118] Please refer to Figures 2 to 6 In an embodiment, the bracket 20 comprises a first part 21 and a second part 22, and the first part 21 is connected to the second part 22. Along the third direction Z, the same side of the first part 21 and the second part 22 is connected to the second shell 12, and the other side of the first part 21 is connected to the first shell 11, and the second part 22 protrudes out of the first shell 11 along the first direction X. Along the third direction Z, the projection of the first connecting piece 50 overlaps the projection of the second part 22, and the projection of the second connecting piece 60 overlaps the projection of the second part 22.

[0119] The second connecting piece 60 is exposed from the side of the second part 22 away from the second shell 12, and is used to connect external equipment.

[0120] In an embodiment, the second portion 22 is provided with a through hole 22a penetrating the second portion 22 along the third direction Z. The second connecting member 60 partially penetrates the through hole 22a and is connected to the first connecting member 50. The through hole 22a is located at a side of the second portion 22 facing away from the second housing 12 and is provided with a first recess 22b. An edge of the first recess 22b is provided with a second recess 22c. The first recess 22b and the second recess 22c are arranged in a stepped manner and are used to accommodate the second connecting member 60. Along the second direction Y, two ends of the second recess 22c are provided with a first connecting hole 221 and a second connecting hole 222, which are used to fix the second connecting member 60.

[0121] In an embodiment, a side of the second portion 22 facing the second housing 12 is provided with a first extension 223. The first extension 223 is arranged at an edge of the through hole 22a and extends in a direction opposite to the third direction Z and forms an accommodation space 22d. The first connecting member 50 and the second connecting member 60 are arranged in the accommodation space 22d.

[0122] In an embodiment, the first circuit board 30 is arranged between the support 20 and the second housing 12. The first circuit board 30 is fixed to a side of the support 20 facing the second housing 12.

[0123] In an embodiment, the first circuit board 30 can collect information such as current, voltage, resistance, temperature, etc. of the battery cell assembly 40. Optionally, the first circuit board 30 includes a BMS (Battery Management System) component. Specifically, the BMS component includes a plurality of electronic components, which can realize functions such as data collection, control, protection, communication, power calculation, signal transmission, and power transmission of the battery. Optionally, the first circuit board 30 includes a flexible circuit board (FPC). Optionally, the first circuit board 30 includes a printed circuit board (PCB), and a plurality of wires (not shown) are arranged on the first circuit board 30.

[0124] Referring to Figure 3 and Figure 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. An electrode terminal 41a of each battery cell 41 penetrates the second circuit board 42 and is connected to the second circuit board 42.

[0125] In an embodiment, the second circuit board 42 is provided with a first electrical connection portion 421 and a second electrical connection portion 422. The first electrical connection portion 421 and the second electrical connection portion 422 penetrate the support 20 and are connected to the first circuit board 30.

[0126] In an embodiment, the second circuit board 42 is further provided with a plurality of sampling lines 423, which pass through the bracket 20 and connect the first circuit board 30, to collect the current, voltage, resistance, temperature and other information of the plurality of battery cells 41.

[0127] Please refer to Figure 2 、 Figure 3 and Figures 7 to 9 In an embodiment, the first connecting member 50 includes a first insulating part 51 and a first conductive part 52, the first conductive part 52 connects the first insulating part 51 and the first circuit board 30, and the first insulating part 51 connects the second connecting member 60, so that the first conductive part 52 connects the second connecting member 60.

[0128] In an embodiment, the first insulating part 51 includes a first base part 511 and a plurality of first protruding parts 512, the plurality of first protruding parts 512 are arranged at intervals along the second direction Y on the first base part 511, and each first protruding part 512 is provided with a first conductive part 52. Optionally, one end of the first conductive part 52 passes through the first base part 511 and is welded to the first circuit board 30, and the other end is arranged in the first protruding part 512. Optionally, the first conductive part 52 is fixed on the first base part 511 by hot melting, pressure bonding or in-mold injection.

[0129] In an embodiment, the side of the first base part 511 away from the first protruding part 512 is provided with a plurality of accommodating recesses 511a. As viewed along the third direction Z, the accommodating recesses 511a are located between adjacent first protruding parts 512. The side of the first base part 511 away from the first protruding part 512 is connected to the first circuit board 30, and an insulating member is arranged between the accommodating recesses 511a and the first circuit board 30, to insulate and protect the adjacent first conductive parts 52 protruding from the first base part 511. Optionally, the insulating member includes insulating glue. Optionally, the insulating glue includes one of potting glue, foaming glue and sealing glue.

[0130] In an embodiment, the first conductive part 52 includes a first signal conductive part 521 and two first power conductive parts 522, and the first signal conductive part 521 is located between the two first power conductive parts 522. The plurality of first protruding parts 512 include a first connecting protruding part 512a, a second connecting protruding part 512b and a third connecting protruding part 512c arranged at intervals. One of the two first power conductive parts 522 is arranged in the first connecting protruding part 512a, and the other is arranged in the third connecting protruding part 512c. The first signal conductive part 521 is arranged in the second connecting protruding part 512b. One of the two first power conductive parts 522 is a total positive terminal, and the other is a total negative terminal. The first signal conductive part 521 can be used to transmit the current, voltage, resistance, temperature and other information of the battery cell 41.

[0131] One end of the first signal conductive part 521 protrudes from the first base part 511 and is connected to the first circuit board 30, and the other end is arranged in the second connecting protrusion 512b. One end of one of the two first power conductive parts 522 protrudes from 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 512a. One end of the other of the two first power conductive parts 522 protrudes from the first base part 511 and is connected to the first circuit board 30, and the other end is arranged in the third connecting protrusion 512c. When viewed along the third direction Z, the accommodating recess 511a is located between the first signal conductive part 521 and the first power conductive part 522 that protrude from the first base part 511, and can insulate and protect the one ends of the first signal conductive part 521 and the first power conductive part 522 that protrude from the first base part 511.

[0132] Optionally, each first protrusion 512 can be provided with multiple first conductive parts 52 of the same kind, for example, two first power conductive parts 522 are arranged in the same first connecting protrusion 512a, and four first signal conductive parts 521 are arranged in the same second connecting protrusion 512b.

[0133] In an embodiment, multiple first protrusions 512 are arranged in the accommodating space 22d. Along the first direction X, the projection of the first protrusion 512 overlaps the projection of the first extending part 223, and the first conductive part 52 in the first protrusion 512 can be insulated and protected by the first extending part 223. Optionally, along the first direction X, the projection of the first protrusion 512 is located in the projection of the first extending part 223, and the first conductive part 52 in the first protrusion 512 can be further insulated and protected by the first extending part 223.

[0134] In an embodiment, multiple first protrusions 512 and the first base part 511 are arranged in the accommodating space 22d. Along the first direction X, the projection of the first protrusion 512 is located in the projection of the first extending part 223, and the projection of the first base part 511 overlaps the projection of the first extending part 223, and the first conductive part 52 in the first protrusion 512 and the first base part 511 can be insulated and protected by the first extending part 223. Optionally, along the first direction X, the projection of the first protrusion 512 is located in the projection of the first extending part 223, and the projection of the first base part 511 is located in the projection of the first extending part 223, and the first conductive part 52 in the first protrusion 512 and the first base part 511 can be further insulated and protected by the first extending part 223.

[0135] Please refer to Figures 10-15 In an embodiment, the second connecting part 60 includes a second conductive part 61 (not shown in the second conductive part 61 in the Figure 15 When the second connecting part 60 is connected to the first connecting part 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 from the support 20, facilitating connection with external equipment.

[0136] Optionally, the second conductive part 61 comprises a first section 61a, a second section 61b and a third section 61c, the second section 61b connects the first section 61a and the third section 61c. The first section 61a is configured to connect the first connecting member 50, and the third section 61c is configured to connect an external device.

[0137] In an embodiment, the second connecting member 60 further comprises a second insulating part 62, the second insulating part 62 comprises a second base 621 and a second protrusion 622, the second protrusion 622 connects the second base 621 and forms a first space 62a. The second section 61b is fixed in the second base 621, and the first section 61a is arranged in the first space 62a. When the second connecting member 60 connects the first connecting member 50, the second protrusion 622 is arranged in the accommodating space 22d, the first protrusion 512 is arranged in the first space 62a, the second protrusion 622 is located between the first extension 223 and the first protrusion 512, and the first section 61a is connected to the first conductive part 52. By arranging the second protrusion 622 between the first extension 223 and the first protrusion 512, the first section 61a and the first conductive part 52 can be insulated and protected, and the first section 61a is facilitated to connect the first conductive part 52.

[0138] In an embodiment, a plurality of first isolation parts 621a are arranged in the first space 62a and spaced apart along the second direction Y, each first isolation part 621a is arranged between adjacent first sections 61a. By arranging the first isolation part 621a, each first section 61a can be insulated and protected, and the risk of short circuit is reduced. When the second connecting member 60 connects the first connecting member 50, each first protrusion 512 is insulated and protected by the first isolation part 621a. The first section 61a is connected to the first conductive part 52, and the third section 61c protrudes from the second base 621 in a direction away from the second protrusion 622.

[0139] Optionally, when the second connecting member 60 connects the first connecting member 50, the second protrusion 622 contacts the first extension 223, and each first protrusion 512 contacts each first isolation part 621a. The sealing between the second protrusion 622 and the first extension 223 and the sealing between the first protrusion 512 and the first isolation part 621a can be increased.

[0140] Optionally, each first protrusion 512 is provided with a first sealing member 512d. When the first protrusion 512 is arranged in the first isolation part 621a, the first sealing member 512d is arranged between each first protrusion 512 and the second protrusion 622. The sealing between the first protrusion 512 and the second protrusion 622 can be further increased.

[0141] In an embodiment, the second connecting member 60 further comprises a second extension 63 connected to the second base 621. The second extension 63 is arranged in the first recess 22b, and two ends of the second extension 63 are provided with a third connecting hole 631 and a fourth connecting hole 632. When the second connecting member 60 is fixed to the bracket 20, a fastener 60a passes through the third connecting hole 631 and is connected to the first connecting hole 221, and another fastener 60a passes through the fourth connecting hole 632 and is connected to the second connecting hole 222. Optionally, the fastener 60a comprises a bolt.

[0142] In an embodiment, a second sealing member 63a is arranged between the second extension 63 and the first recess 22b, which can increase the sealing performance of the second connecting member 60 and the bracket 20.

[0143] In an embodiment, the second connecting member 60 further comprises a third protrusion 64 connected to a side of the second base 621 away from the second protrusion 622 and forming a second space 64a in which the third section 61c is arranged. The third protrusion 64 protrudes from the through hole 22a of the bracket 20, facilitating connection with external equipment.

[0144] In an embodiment, a plurality of second isolation portions 641a are arranged in the second space 64a and spaced apart along the second direction Y. Each second isolation portion 641a is arranged between adjacent third sections 61c, and the second isolation portion 641a can insulate and protect each third section 61c, reducing the risk of short circuit.

[0145] In an embodiment, the second conductive portion 61 comprises a second signal conductive portion 611 and two second power conductive portions 612, and the second signal conductive portion 611 is located between the two second power conductive portions 612. The first isolation portion 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 first sections 61a of the second signal conductive portion 611 and the two second power conductive portions 612 are used to connect the first conductive portion 52. When the first protrusion 512 is arranged in the first isolation portion 621a, the second signal conductive portion 611 is connected to the first signal conductive portion 521, one 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 third sections 61c of the second signal conductive portion 611 and the two second power conductive portions 612 are used to connect external equipment.

[0146] Optionally, the second conductive portion 61 is fixed on the second base 621 by hot melting, crimping, or in-mold injection, etc.

[0147] Please refer toFigure 16 The present application also provides an external device 200 using the above battery pack 100. In an embodiment, the external device 200 of the present application can be, but is not limited to, an electronic device, a drone, a backup power supply, an electric vehicle, an electric motorcycle, an electric assist bicycle, an electric tool, a household large storage battery, etc.

[0148] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as limitations to the present application, and as long as the above embodiments are within the spirit and scope of the present application, any suitable changes and variations made to the above embodiments are within the scope of the present application.

Claims

1. A battery pack characterized by comprising: The application relates to a battery pack, comprising: a housing including a first housing and a second housing; a support arranged between the first housing and the second housing, the support including a first part and a second part, the first part being connected to the second part, the same side of the first part and the second part being connected to the second housing along a third direction, the other side of the first part being connected to the first housing, the second part protruding out of the first housing along a first direction, the first direction being perpendicular to the third direction, the second part being provided with a through hole penetrating through the second part along the third direction; a battery cell assembly accommodated in the first housing; a first circuit board connected to the support, the first circuit board being connected to the battery cell assembly; a first connecting member connected to the first circuit board; a second connecting member detachably connected to the second part, the second connecting member including a second conductive part, the second conductive part penetrating through the through hole and being detachably connected to the first connecting member; the second connecting member being configured to be connected to an external device.

2. The battery pack of claim 1, wherein, One end of the second conductive part penetrates through the through hole and is connected to the first connecting member, and the other end protrudes out of the support.

3. The battery pack of claim 2, wherein, The first connecting member includes a first insulating part and a first conductive part, the first insulating part including a first base and a plurality of first protrusions, the plurality of first protrusions being arranged at intervals on the first base, each of the first protrusions being provided with the first conductive part, one end of the first conductive part penetrating through the first base and being connected to the first circuit board, and the other end being connected to the second conductive part.

4. The battery pack of claim 3, wherein, The side of the support facing the first circuit board is provided with a first extension part and forms an accommodation space, and the plurality of first protrusions are arranged in the accommodation space.

5. The battery pack of claim 4, wherein, The first base is arranged in the accommodation space.

6. The battery pack of claim 4 or 5, wherein, The second connecting member includes a second insulating part, the second insulating part including a second base and a second protrusion, the second protrusion being connected to the second insulating part and forming a first space, the second protrusion being arranged in the accommodation space, the first protrusion being arranged in the first space, and the second protrusion being located between the first extension part and the first protrusion.

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

8. The battery pack of claim 7, wherein, A first sealing member is arranged between the second protrusion and the first protrusion.

9. The battery pack of claim 7, wherein, The second connecting member further includes a third protrusion, the third protrusion protruding out of the support, the third protrusion being connected to the side of the second base away from the second protrusion and forming a second space, and one end of the second conductive part away from the second protrusion being arranged in the second space.

10. The battery pack of claim 9, wherein, The first conductive part includes a first signal conductive part and two first power conductive parts, and the first signal conductive part is located between the two first power conductive parts. A plurality of second isolation parts arranged at intervals are arranged in the second space, the second conductive part including a second signal conductive part and two second power conductive parts, and the second isolation parts being arranged between the second signal conductive part and the second power conductive parts.

11. The battery pack of claim 6, wherein, The second connecting piece further comprises a second extension part connected to the second insulation part, the second extension part is connected to the support, and a second sealing member is arranged between the second extension part and the support.

12. The battery pack of claim 3, wherein, The first base is provided with a receiving recess on the side away from the first convex part, the receiving recess is arranged between the adjacent first conductive parts, and an insulation member is arranged between the receiving recess and the first circuit board.

13. An external device, characterized by A battery pack comprising the battery as claimed in any one of claims 1-12.

Images