Battery pack and electric equipment

Abstract

The invention discloses a battery pack and electric equipment. The battery pack comprises a first shell, a battery cell assembly, a top cover, a connecting piece and a connecting terminal, the battery core assembly is arranged in the first shell; the top cover and the first shell are arranged in the first direction, the top cover comprises a first opening, the first opening penetrates through the top cover in the first direction and the second direction, and the first direction is perpendicular to the second direction. The connecting piece is connected with the top cover and covers a part of the first opening. The connecting terminal is connected with the battery core assembly and is detachably connected with the top cover, one part of the connecting piece is arranged between the top cover and the connecting terminal, and the connecting terminal is exposed out of the top cover. The connecting terminal is detachably connected with the top cover, so that the first opening is conveniently exposed after the connecting terminal is detached, the first opening penetrates through the top cover in the first direction and the second direction, the first opening is expanded, the battery pack is conveniently maintained through the first opening, the step of opening the top cover for maintenance is reduced, and the maintenance convenience is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery pack and electrical equipment. Background Art

[0002] At present, battery packs are widely used in electric vehicles, intelligent energy storage equipment and other fields. When repairing a battery pack, the outer shell needs to be removed, and the conventional one-piece glue-filled battery pack is not easy to repair. Summary of the invention

[0003] In view of this, it is necessary to provide a battery pack and an electrical device to facilitate the maintenance of the battery pack.

[0004] An embodiment of the present application provides a battery pack, including a first shell, a battery cell assembly, a top cover, a connector and a connecting terminal. The battery cell assembly is arranged in the first shell. The top cover and the first shell are arranged along a first direction, and the top cover includes a first opening, and the first opening passes through the top cover along both the first direction and the second direction, and the first direction is perpendicular to the second direction. The connector connects the top cover and covers a portion of the first opening. The connecting terminal connects the battery cell assembly and is detachably connected to the top cover. A portion of the connector is disposed between the top cover and the connecting terminal, and the connecting terminal is exposed on the top cover. The top cover is detachably connected through the connecting terminal, so that the first opening is exposed after the connecting terminal is removed, and the top cover is penetrated through the first opening in the first direction and the second direction, thereby expanding the first opening, making it easier to repair the battery pack through the first opening, reducing the steps of opening the top cover for repair, and improving the convenience of repair.

[0005] In one or more optional embodiments above, the top cover includes a step portion, the step portion includes a first area, a second area, and a third area, along the first direction, the first area is closer to the connection terminal than the second area, and the third area connects the first area and the second area. Along the first direction, the first opening passes through the first area and / or the second area. Along the second direction, the first opening passes through the third area.

[0006] In one or more of the above optional embodiments, along the first direction, the projection of the first area is separated from the projection of the second area, so that the third area is tilted, which is beneficial to expand the first opening and facilitate the maintenance of the battery pack.

[0007] In one or more of the above optional embodiments, the battery pack also includes a wiring harness connecting the battery cell assemblies and the connection terminals. The wiring harness includes a detachably connected adapter, and the adapter is configured to move outside the top cover through the first opening to facilitate removal and replacement of the adapter.

[0008] In one or more optional embodiments above, the battery pack further includes a second shell, the second shell connects the first shell and the top cover; there is a receiving space between the second shell and the top cover, the receiving space is connected to the first opening, the second shell includes a harness channel extending along the second direction, the harness channel is located in the receiving space, and a portion of the harness is bent and arranged in the harness channel. It is convenient to stretch the harness, so that the adapter moves in the harness channel and moves from the first opening to the outside of the top cover.

[0009] In one or more optional embodiments above, the second housing is provided with two limiting protrusions arranged at intervals along the third direction, the two limiting protrusions extend along the second direction, the two limiting protrusions form a wiring harness channel, and the first direction, the second direction and the third direction are perpendicular to each other. The two limiting protrusions limit the position of the wiring harness along the third direction, so that the wiring harness is easy to move in the wiring harness channel, and the moving path of the wiring harness is prevented from being interfered with or the wiring harness is scratched, so that the adapter is moved from the first opening to the outside of the top cover.

[0010] In one or more optional embodiments above, the wiring harness includes a power wiring harness and a sampling wiring harness, the power wiring harness includes a first adapter, the sampling wiring harness includes a second adapter, the first adapter and the second adapter are both arranged in the wiring harness channel, and along the second direction, the second adapter and the first adapter are staggered, so that the first adapter and the second adapter can be pulled out of the first opening in sequence, and the first adapter and the second adapter can be prevented from blocking the first opening together.

[0011] In one or more optional embodiments above, a portion of the power harness is arranged in a bent state in the harness channel, the power harness includes a first section and a second section, the first section connects the battery cell assembly and the first adapter, and the second section connects the first adapter and the connection terminal; the length of the first section after straightening is greater than the length of the battery pack along the second direction, so that the first adapter can be moved from the first opening to the outside of the top cover, and the first adapter and the second section can be replaced; and\or, a portion of the sampling harness is arranged in a bent state in the harness channel, the sampling harness includes a third section and a fourth section, the third section connects the battery cell assembly and the second adapter, and the fourth section connects the second adapter and the connection terminal; the length of the third section after straightening is greater than the length of the battery pack along the second direction. It is convenient to move the second adapter from the first opening to the outside of the top cover, and the second adapter and the fourth section can be replaced.

[0012] In one or more optional embodiments above, the bending strength of the power harness is greater than that of the sampling harness, and the sampling harness is connected to the power harness. The power harness can drive the sampling harness to move together, and can reduce the resistance of the sampling harness and the power harness to move in the harness channel.

[0013] In one or more optional embodiments above, the top cover includes a side wall, the side wall is provided with a second opening, the second opening penetrates the side wall along the second direction, and along the second direction, the projection of the second opening overlaps with the projection of the first opening. The adapter can be moved to the outside of the battery pack through the first opening and the second opening, which further facilitates the removal of the adapter and the replacement of part of the wiring harness.

[0014] In one or more of the above optional embodiments, the battery pack further includes a fastener, the connector includes a first connecting portion, the first connecting portion connects the first area, the second area and the third area, and the fastener connects the connecting terminal, the first connecting portion and the step portion. The fastener is used to improve the sealing between the connecting terminal and the connector and between the connecting member and the top cover, and the fastener is used to fix the connecting terminal and the connector together, reducing other fasteners, facilitating the disassembly and assembly of the connecting terminal and the connector, and improving maintenance efficiency.

[0015] In one or more optional embodiments above, the top cover includes a first recess, the step portion is provided in the first recess, the connector also includes a second connector connected to the first connector, the second connector is provided in the second opening, and the second connector is provided with a channel, the channel connects the first recess and the outside of the first recess, so as to facilitate the discharge of the fluid in the first recess from the channel to the outside of the battery pack.

[0016] In one or more of the above optional embodiments, the compression rate of the connector is greater than the compression rate of the top cover, so as to facilitate the connector to be compressed between the connection terminal and the top cover, thereby improving the sealing of the battery pack.

[0017] In one or more of the above optional embodiments, the connecting member includes a silicone member.

[0018] The present application provides an electrical device, comprising a battery pack according to any one of the above embodiments.

[0019] The battery pack and the electrical equipment mentioned above are detachably connected to the top cover via the connecting terminal, so that the first opening is exposed after the connecting terminal is removed, and the top cover is penetrated through the first opening along the first direction and the second direction to enlarge the first opening, so that the battery pack can be repaired through the first opening, reducing the steps of opening the top cover for repair and improving the convenience of repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a battery pack in some embodiments is shown.

[0021] Figure 2 A schematic diagram of the structure of a portion of a battery pack in some embodiments is shown.

[0022] Figure 3 An exploded schematic diagram of a battery pack in some embodiments is shown.

[0023] Figure 4 Shows Figure 1 Cross-sectional view of the battery pack along II-II.

[0024] Figure 5 Shows Figure 2 Cross-sectional view of the battery pack along III-III.

[0025] Figure 6 A schematic diagram of the structure of a portion of a battery pack in some embodiments is shown.

[0026] Figure 7 A schematic structural diagram of the second shell in some embodiments is shown.

[0027] Figure 8 A schematic diagram of the structure of a portion of a battery pack in some embodiments is shown.

[0028] Fig. 9 Schematic diagrams of the structures of connecting members in some embodiments are shown.

[0029] Fig.10 A simplified schematic diagram of electrical equipment in some embodiments is shown.

[0030] Description of main component symbols: Battery Pack 100 Accommodation space 100a Fixing member 100b First housing 10 Connection recess 10a Battery cell assembly 20 Battery 21 Battery shell 211 Electrode assembly 212 Electrode terminal 213 Top cover 30 Projection 30a First opening 31 Step 32 First Area 321 Second area 322 Third Area 323 Side wall 33 The second opening 331 The third fixing hole 34 first recess 35 Connection hole 36 Limiting slot 37 Connector 40 First connection portion 41 Second fixing hole 411 Second connection portion 42 Channel 421 The first connecting protrusion 422 The second connecting protrusion 423 Connecting terminal 50 First fixing hole 51 Harness 60 Adapter 61 First adapter 611 Second adapter 612 Power harness 62 First paragraph 621 Second paragraph 622 Sampling Harness 63 Section 3631 Section 4 632 Second housing 70 Containment Chamber 71 Wiring channel 72 Limiting protrusion 73 Through hole 74 Circuit Boards 101 Fasteners 102 First direction X Second direction Y The third direction Z Electrical equipment 200 The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0031] 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 part of the embodiments of the present application, rather than all the embodiments.

[0032] When a component is considered to be “disposed on” another component, it can be directly disposed on the other component or there may be a component interposed therebetween. When a component is considered to be “connected to” another component, it can be directly connected to the other component or there may be a component interposed therebetween.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0034] It can be understood that the term "perpendicular" is used to describe an ideal state between two components. In actual production or use, there may be a state that is approximately perpendicular or equal to each other between the two components. For example, in combination with numerical descriptions, perpendicularity can refer to the angle between two straight lines being between 90°±10°, perpendicularity can also refer to the dihedral angle between two planes being between 90°±10°, and perpendicularity can also refer to the angle between a straight line and a plane being between 90°±10°. The two components described as "perpendicular" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line" or a "plane" if the overall extension direction is a straight line or a plane.

[0035] Unless otherwise defined, when the term "plurality" is used to describe the number of components, it specifically means that the components are two or more.

[0036] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] See also Figures 1 to 5 An embodiment of the present application provides a battery pack 100 , including a first shell 10 and a battery cell assembly 20 , wherein the battery cell assembly 20 is disposed in the first shell 10 .

[0038] In some embodiments, the battery pack 100 includes a top cover 30 , and the top cover 30 and the first housing 10 are arranged along a first direction X. The top cover 30 includes a first opening 31 , and the first opening 31 penetrates the top cover 30 along the first direction X and the second direction Y, and the first direction X is perpendicular to the second direction Y.

[0039] In some embodiments, the battery pack 100 includes a connector 40 and a connector terminal 50. The connector 40 is connected to the top cover 30 and covers a portion of the first opening 31. The connector terminal 50 is connected to the battery cell assembly 20 and is detachably connected to the top cover 30. A portion of the connector 40 is disposed between the top cover 30 and the connector terminal 50. The connector terminal 50 is exposed from the top cover 30.

[0040] In some embodiments, the connection terminal 50 is configured to connect to an external device. Optionally, the connection terminal 50 is configured to connect to an external power-consuming device. The connection terminal 50 is configured to connect to an external charging device.

[0041] The present application uses a connection terminal 50 to detachably connect the top cover 30, so that the first opening 31 is exposed after the connection terminal 50 is removed, and the first opening 31 penetrates the top cover 30 along the first direction X and the second direction Y to expand the first opening 31, so that the battery pack 100 can be repaired through the first opening 31, reducing the steps of opening the top cover 30 for repair and improving the convenience of repair.

[0042] See also Figure 2 In some embodiments, the top cover 30 includes a step portion 32 , and the step portion 32 includes a first area 321 and a second area 322 . Along the first direction X, the first area 321 is closer to the connection terminal 50 than the second area 322 .

[0043] In some embodiments, along the first direction X, the first opening 31 penetrates the first region 321 .

[0044] In some embodiments, along the first direction X, the first opening 31 penetrates the second region 322 .

[0045] In some embodiments, along the first direction X, the first opening 31 penetrates the first region 321 and the second region 322 .

[0046] In some embodiments, the step portion 32 includes a third region 323 , the third region 323 connects the first region 321 and the second region 322 , and along the second direction Y, the first opening 31 penetrates the third region 323 .

[0047] In some embodiments, along the first direction X, the projection of the first area 321 and the projection of the second area 322 are separated, so that the third area 323 is tilted, which is beneficial to expand the first opening 31 and facilitate the maintenance of the battery pack 100.

[0048] See also Figures 4 to 6 In some embodiments, the battery pack 100 includes a wiring harness 60 , which connects the battery cell assembly 20 and the connection terminal 50 .

[0049] In some embodiments, the wire harness 60 includes a detachably connected adapter 61 , and the adapter 61 is configured to be moved to the outside of the top cover 30 through the first opening 31 , so as to facilitate the removal and replacement of the adapter 61 .

[0050] In some embodiments, the battery pack 100 includes a circuit board 101 , the circuit board 101 is connected to the battery cell assembly 20 , and the wiring harness 60 connects the circuit board 101 and the connection terminal 50 .

[0051] In some embodiments, the battery cell assembly 20 includes a plurality of stacked battery cells 21 , each of which includes a battery cell housing 211 , an electrode assembly 212 and an electrode terminal 213 . The electrode assembly 212 is disposed in the battery cell housing 211 , and the electrode terminal 213 is connected to the electrode assembly 212 , extends out of the battery cell housing 211 , and is connected to the circuit board 101 .

[0052] Optionally, the circuit board 101 includes a BMS component (Battery Management System), which includes multiple electronic components. The multiple electronic components can realize functions such as control, protection, communication, power calculation, signal transmission, and power transmission of the battery cell 21.

[0053] Optionally, the circuit board 101 includes a flexible printed circuit (FPC). Optionally, the circuit board 101 includes a printed circuit board (PCB).

[0054] See also Figures 2 to 6 In some embodiments, the battery pack 100 includes a second shell 70, which is connected to the first shell 10 and forms a receiving space 100a, and the battery cell assembly 20 is disposed in the receiving space 100a.

[0055] In some embodiments, the second shell 70 is connected to the first shell 10 , the top cover 30 is connected to the first shell 10 and the second shell 70 , and a receiving space 71 is defined between the second shell 70 and the top cover 30 , and the receiving space 71 is connected to the first opening 31 .

[0056] In some embodiments, the first shell 10 and the second shell 70 form a connecting recess 10 a , and the top cover 30 is provided with a convex portion 30 a , which is disposed in the connecting recess 10 a , and is beneficial to improving the sealing of the battery pack 100 .

[0057] In some embodiments, the battery pack 100 includes a fixing member 100b, and the fixing member 100b connects the first housing 10 and the second housing 70. Optionally, the fixing member 100b includes a screw.

[0058] In some embodiments, the second shell 70 is adhesively connected to the inner surface of the first shell 10 .

[0059] In some embodiments, the second shell 70 includes a wiring harness channel 72 arranged along the second direction Y, the wiring harness channel 72 is located in the accommodating space 71, and a portion of the wiring harness 60 is arranged in a bent state in the wiring harness channel 72 to facilitate stretching the wiring harness 60, so that the adapter 61 moves in the wiring harness channel 72 and moves from the first opening 31 to the outside of the top cover 30.

[0060] See also Figure 6 and Figure 7In some embodiments, the second housing 70 includes two limiting protrusions 73 arranged at intervals along the third direction Z, and the two limiting protrusions 73 extend along the second direction Y. The two limiting protrusions 73 form a harness channel 72, and a portion of the harness 60 is located between the two limiting protrusions 73. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The position of the harness 60 is limited along the third direction Z by the two limiting protrusions 73, so that the harness 60 can move in the harness channel 72, and the moving path of the harness 60 can be prevented from being interfered with or scratched, so that the adapter 61 can be moved from the first opening 31 to the outside of the top cover 30.

[0061] In some embodiments, along the first direction X, part of the wiring harness 60 is located between the second shell 70 and the top cover 30. The position of the wiring harness 60 is limited along the first direction X by the second shell 70 and the top cover 30, which further facilitates the movement of the wiring harness 60 in the wiring harness channel 72, so that the adapter 61 moves from the first opening 31 to the outside of the top cover 30.

[0062] In some embodiments, the second housing 70 includes a through hole 74 , which penetrates the second housing 70 along the first direction X. The wire harness 60 extends from the through hole 74 and is bent and disposed in the wire harness channel 72 .

[0063] See also Figure 6 In some embodiments, the wiring harness 60 includes a power wiring harness 62 , which connects the circuit board 101 and the connection terminal 50 , and is used to transmit the electrical energy of the battery cell assembly 20 to the connection terminal 50 .

[0064] In some embodiments, the wiring harness 60 includes a sampling wiring harness 63, which is plugged into the circuit board 101. The sampling wiring harness 63 is used to collect and transmit signals such as temperature, voltage, current, and resistance of the battery cell assembly 20.

[0065] In some embodiments, the power harness 62 includes a first adapter 611, and the sampling harness 63 includes a second adapter 612, and the first adapter 611 and the second adapter 612 are both disposed in the harness channel 72. Along the second direction Y, the first adapter 611 and the second adapter 612 are staggered, so that the first adapter 611 and the second adapter 612 are conveniently pulled out of the first opening 31 in sequence, thereby reducing the occurrence of the first adapter 611 and the second adapter 612 blocking the first opening 31 together.

[0066] Optionally, along the second direction Y, the first adapter 611 is closer to the first opening 31 than the second adapter 612 .

[0067] Optionally, along the second direction Y, the second adapter 612 is closer to the first opening 31 than the first adapter 611 .

[0068] See also Figure 6In some embodiments, a portion of the power harness 62 is bent and disposed in the harness channel 72. The power harness 62 includes a first section 621 and a second section 622. The first section 621 connects the battery cell assembly 20 and the first adapter 611, and the second section 622 connects the first adapter 611 and the connection terminal 50. The length of the first section 621 after being straightened is greater than the length of the battery pack 100 along the second direction Y, which facilitates moving the first adapter 611 from the first opening 31 to the outside of the top cover 30, and facilitates replacement of the first adapter 611 and the second section 622.

[0069] In some embodiments, a portion of the sampling harness 63 is bent and disposed in the harness channel 72. The sampling harness 63 includes a third section 631 and a fourth section 632. The third section 631 connects the battery cell assembly 20 and the second adapter 612, and the fourth section 632 connects the second adapter 612 and the connection terminal 50. The length of the third section 631 after being straightened is greater than the length of the battery pack 100 along the second direction Y, which facilitates moving the second adapter 612 from the first opening 31 to the outside of the top cover 30, and facilitates replacement of the second adapter 612 and the fourth section 632.

[0070] In some embodiments, the first adapter 611 includes an adapter for plug-in connection. The second adapter 612 includes an adapter for plug-in connection.

[0071] In some embodiments, the bending strength of the power harness 62 is greater than that of the sampling harness 63, and the sampling harness 63 is connected to the power harness 62. The power harness 62 can drive the sampling harness 63 to move together, and can reduce the resistance of the sampling harness 63 and the power harness 62 to move in the harness channel 72.

[0072] Optionally, the sampling harness 63 is bundled and connected with the power harness 62. Optionally, the sampling harness 63 and the power harness 62 are bundled and connected by a cable tie.

[0073] Optionally, part of the sampling harness 63 is bonded and connected to the power harness 62 .

[0074] See also Figure 2 and Figure 8 In some embodiments, the top cover 30 includes a side wall 33, and the side wall 33 is provided with a second opening 331, and the second opening 331 penetrates the side wall 33 along the second direction Y. Along the second direction Y, the projection of the second opening 331 overlaps with the projection of the first opening 31. The adapter 61 can be moved to the outside of the battery pack 100 through the first opening 31 and the second opening 331, which further facilitates the removal of the adapter 61 and the replacement of part of the wiring harness 60.

[0075] See also Figure 1 , Figure 3 , Figure 4 and Fig. 9In some embodiments, the connector 40 includes a first connecting portion 41 , which connects the first region 321 , the second region 322 , and the third region 323 , such that the first connecting portion 41 covers a portion of the first opening 31 .

[0076] In some embodiments, a portion of the first connection portion 41 is located above the first region 321 , and a portion of the first connection portion 41 is disposed in a recess formed by the second region 322 and the third region 323 .

[0077] In some embodiments, the battery pack 100 includes a fastener 102, and the fastener 102 connects the connection terminal 50, the first connection portion 41, and the step portion 32. The fastener 102 improves the sealing between the connection terminal 50 and the connection member 40 and between the connection member 40 and the top cover 30. The fastener 102 fixes the connection terminal 50 and the connection member 40 together, reduces other fasteners, facilitates the disassembly and assembly of the connection terminal 50 and the connection member 40, and improves the maintenance efficiency.

[0078] In some embodiments, the connection terminal 50 has a plurality of first fixing holes 51, the first connection portion 41 has a plurality of second fixing holes 411, and the top cover 30 has a plurality of third fixing holes 34. The fastener 102 passes through the first fixing holes 51 and the second fixing holes 411 in sequence and is disposed in the third fixing holes 34.

[0079] See also Figure 1 , Figure 3 , Figure 4 and Fig. 9 In some embodiments, the connecting member 40 includes a second connecting portion 42 , the second connecting portion 42 is connected to the first connecting portion 41 , and the second connecting portion 42 is disposed in the second opening 331 .

[0080] In some embodiments, the top cover 33 includes a first recess 35, the step portion 32 is provided in the first recess 35, the second connection portion 42 is provided with a channel 421, and the channel 421 communicates with the first recess 35 and the outside of the first recess 35, so as to facilitate the fluid in the first recess 35 to be discharged from the channel 421 to the outside of the battery pack 100. Optionally, the fluid includes water.

[0081] In some embodiments, the compression rate of the connector 40 is greater than the compression rate of the top cover 30 , which facilitates pressing the connector 40 between the connecting terminal 50 and the top cover 30 , thereby improving the sealing of the battery pack 100 .

[0082] In some embodiments, the first connection portion 41 and the second connection portion 42 are integrally formed.

[0083] In some embodiments, the connector 40 includes a silicone member.

[0084] See also Figure 2 and Fig. 9 In some embodiments, the top cover 30 is provided with a connecting hole 36 , which is located at the second opening 331 , and the second connecting portion 42 is provided with a first connecting protrusion 422 , which is provided at the connecting hole 36 , so as to facilitate the positioning of the connecting member 40 .

[0085] In some embodiments, the top cover 30 is provided with a limiting groove 37 , and the second connecting portion 42 is provided with a second connecting protrusion 423 . The second connecting protrusion 423 is provided in the limiting groove 37 , which further facilitates the positioning of the connecting member 40 .

[0086] See also Fig.10 The present application also provides an electric device 200 using the above-mentioned battery pack 100. In one embodiment, the electric device 200 of the present application can be, but is not limited to, electronic equipment, drones, backup power supplies, electric vehicles, electric motorcycles, electric power-assisted bicycles, electric tools, large household battery modules, etc.

[0087] 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 on the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A battery pack, characterized in that: include: a first shell; A battery cell assembly, disposed in the first housing; A top cover, wherein the top cover and the first shell are arranged along a first direction, the top cover comprises a first opening, the first opening penetrates the top cover along both the first direction and a second direction, and the first direction is perpendicular to the second direction; A connecting member, connected to the top cover and covering a portion of the first opening; A connecting terminal is connected to the battery cell assembly and is detachably connected to the top cover. A portion of the connecting member is disposed between the top cover and the connecting terminal, and the connecting terminal is exposed from the top cover.

2. The battery pack according to claim 1, characterized in that: The top cover includes a step portion, the step portion includes a first area, a second area and a third area, along the first direction, the first area is closer to the connection terminal than the second area, and the third area connects the first area and the second area; Along the first direction, the first opening penetrates the first area and / or the second area; Along the second direction, the first opening penetrates the third area.

3. The battery pack according to claim 2, characterized in that: Along the first direction, the projection of the first area is separated from the projection of the second area.

4. The battery pack according to any one of claims 2 to 3, characterized in that: The battery pack further includes a wiring harness connecting the battery cell assembly and the connection terminal, the wiring harness including a detachably connected adapter, and the adapter is configured to move to the outside of the top cover through the first opening.

5. The battery pack according to claim 4, characterized in that: The battery pack also includes a second shell, which connects the first shell and the top cover; a receiving space is provided between the second shell and the top cover, and the receiving space is connected to the first opening; the second shell includes a wiring harness channel extending along the second direction, the wiring harness channel is located in the receiving space, and a portion of the wiring harness is arranged in the wiring harness channel in a bent state.

6. The battery pack according to claim 5, characterized in that: The second housing is provided with two limiting protrusions spaced apart along the third direction, the two limiting protrusions extend along the second direction, the two limiting protrusions form the wiring harness channel, and the first direction, the second direction and the third direction are perpendicular to each other.

7. The battery pack according to any one of claims 5 to 6, characterized in that: The wiring harness includes a power wiring harness and a sampling wiring harness, the power wiring harness includes a first adapter, the sampling wiring harness includes a second adapter, the first adapter and the second adapter are both arranged in the wiring harness channel, and along the second direction, the second adapter and the first adapter are staggered.

8. The battery pack according to claim 7, characterized in that: A portion of the power harness is arranged in the harness channel in a bent state, and the power harness includes a first section and a second section, the first section connects the battery cell assembly and the first adapter, and the second section connects the first adapter and the connection terminal; the length of the first section after being straightened is greater than the length of the battery pack along the second direction; And\or, a portion of the sampling harness is arranged in a bent state in the harness channel, and the sampling harness includes a third section and a fourth section, the third section connects the battery cell assembly and the second adapter, and the fourth section connects the second adapter and the connecting terminal; the length of the third section after straightening is greater than the length of the battery pack along the second direction.

9. The battery pack according to claim 7, characterized in that: The bending strength of the power harness is greater than that of the sampling harness, and the sampling harness is connected to the power harness.

10. The battery pack according to any one of claims 2 to 9, characterized in that: The top cover includes a side wall, the side wall is provided with a second opening, the second opening penetrates the side wall along the second direction, and along the second direction, a projection of the second opening overlaps with a projection of the first opening.

11. The battery pack according to claim 10, characterized in that: The battery pack further includes a fastener, the connector includes a first connecting portion, the first connecting portion connects the first region, the second region, and the third region, and the fastener connects the connecting terminal, the first connecting portion, and the step portion.

12. The battery pack according to claim 11, characterized in that: The top cover includes a first recess, the step portion is arranged in the first recess, the connecting member also includes a second connecting portion connected to the first connecting portion, the second connecting portion is arranged in the second opening, and the second connecting portion is provided with a channel, and the channel connects the first recess and the outside of the first recess.

13. The battery pack according to any one of claims 1 to 12, characterized in that: The compression rate of the connecting member is greater than the compression rate of the top cover.

14. The battery pack according to any one of claims 1 to 13, characterized in that: The connecting piece includes a silicone piece.

15. An electrical equipment, characterized in that: Comprising a battery pack as claimed in any one of claims 1 to 14.

Images