CN216958173U

CN216958173U - Battery pack

Info

Publication number: CN216958173U
Application number: CN202120951855.8U
Authority: CN
Inventors: 蒋杰; 柯亨钊; 吴锐雷
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-07-12
Anticipated expiration: 2031-05-06

Abstract

The application discloses a battery pack for adapting a first device or a second device, which comprises a battery pack component, a power management module and a circuit board component. The power management module is electrically connected to the power core assembly and used for converting the input voltage of the power core assembly into a first target current for supplying power to the first equipment and converting the input voltage of the power core assembly into a second target current for supplying power to the second equipment; the circuit board assembly is electrically connected to the electric core assembly and the power management module, the circuit board assembly comprises a first circuit board and a second circuit board, the power management module, the first circuit board and the second circuit board are located at the same end of the battery pack, and the power management module is fixed on the first circuit board and the second circuit board. In the above arrangement, the power management module is fixed on the two circuit boards, and the three are arranged at the same end of the battery pack along the length direction, so that the waste of space can be avoided by stacking the power management module, and the miniaturization of the volume of the battery pack is facilitated.

Description

Battery pack

Technical Field

The application relates to the field of batteries, in particular to a battery pack.

Background

In order to improve the universality of the electric tool and enable the working range of the electric tool not to be limited by the position of a socket, a battery pack power supply mode is adopted in many electric tools on the market. The electric tool has the characteristics of convenience in carrying, simplicity in operation, various functions and the like, can greatly reduce the labor intensity, improve the working efficiency and realize manual operation mechanization, so that the electric tool is widely applied to the fields of buildings, house decoration, automobiles, machinery, electric power, bridges, gardening and the like and can enter families in a large quantity. The volume of the battery pack has a greater impact on whether it can accommodate more power tools.

SUMMERY OF THE UTILITY MODEL

The application provides a battery pack, which is beneficial to realizing miniaturization of a battery pack structure.

According to a first aspect of the present application, there is provided a battery pack for adapting a first device or a second device, the battery pack comprising:

an electrical core assembly;

the power management module is electrically connected with the power assembly and used for converting the input voltage of the power assembly into a first target current for supplying power to the first equipment and converting the input voltage of the power assembly into a second target current for supplying power to the second equipment;

the circuit board assembly is electrically connected with the battery pack assembly and the power management module, the circuit board assembly comprises a first circuit board and a second circuit board, the power management module, the first circuit board and the second circuit board are located at the same end of the battery pack, and the power management module is fixed on the first circuit board and the second circuit board.

Further, the first circuit board and the second circuit board are perpendicular to each other.

Further, the battery pack also comprises a support framework for fixing the electric core assembly; the first circuit board and the second circuit board are fixed on the support framework and/or the electric core assembly; or,

The battery pack further comprises a housing assembly, and the first circuit board and/or the second circuit board are/is fixed to the housing assembly.

Furthermore, the first circuit board and the second circuit board are respectively and fixedly connected to the supporting framework, and the first circuit board and the second circuit board are connected through a lead.

Further, the plane of the second circuit board is perpendicular to the axial direction of the electric core assembly; the electric core component comprises a first electrode and a second electrode;

the battery pack further comprises a nickel sheet assembly, the nickel sheet assembly is fixed on the second circuit board and electrically connected to the first electrode and the second electrode of the electric core assembly, and the nickel sheet assembly is used for electrically connecting the first electrode and the second electrode of the electric core assembly to the second circuit board.

Further, the first circuit board and the second circuit board enclose an accommodating space for accommodating the power management module;

the horizontal orthographic projection of the accommodating space is smaller than or equal to the horizontal orthographic projection of the whole formed by the first circuit board and the second circuit board, and the vertical projection of the accommodating space is smaller than or equal to the vertical projection of the whole formed by the first circuit board and the second circuit board.

Further, the first circuit board and the second circuit board are parallel to each other, and the second circuit board is fixed to the first circuit board.

Furthermore, the circuit board assembly further comprises a conductive column, and two ends of the conductive column are fixedly connected with the first circuit board and the second circuit board and electrically connected with the first circuit board and the second circuit board.

Further, the battery pack also comprises a support framework for fixing the electric core assembly;

the first circuit board is arranged below the second circuit board and fixedly connected to the supporting framework.

Furthermore, the first circuit board and the second circuit board are arranged at intervals and enclose an accommodating space for accommodating the power management module.

Further, the battery package still includes the support chassis that is used for fixing the electric core subassembly, support chassis includes:

a first support part for supporting the cell assembly;

a second supporting part for supporting the circuit board assembly;

the first supporting part and the second supporting part are arranged along the length direction of the battery pack, and the length direction of the battery pack is parallel to the axial direction of the battery cell assembly.

Further, the battery cell assembly comprises at least one battery cell; the first supporting part comprises an arc-shaped supporting end face, and the supporting end face abuts against the side face of the battery cell.

Further, the supporting end surface extends from one end of the second supporting portion to the other end of the second supporting portion; or the supporting end faces are only located at two ends of the first supporting part and are used for supporting two ends of the electric core assembly.

Furthermore, a first heat dissipation groove is formed in the lower portion of the first supporting portion in a penetrating mode, and at least part of the electric core assembly is exposed through the first heat dissipation groove.

Further, the first supporting part comprises a positioning end plate, the positioning end plate is located at one end of the first supporting part, which is far away from the second supporting part, and one end of the cell assembly abuts against the positioning end plate;

the positioning end plate is provided with a second heat dissipation groove which penetrates through the positioning end plate, and at least part of the electric core assembly is exposed through the second heat dissipation groove.

Furthermore, the battery pack also comprises a nickel sheet assembly fixedly connected with the electric core assembly, and the nickel sheet assembly comprises a positioning part fixed at the end part of the electric core assembly;

And at least part of the positioning part positioned at one end of the electric core assembly, which is far away from the second supporting part, is positioned in the second heat dissipation groove.

Further, the battery package is still including being used for fixing the support chassis of electric core subassembly, power management module, electric core subassembly circuit board component with at least part of support chassis set up in casing assembly's inside.

Further, the housing assembly includes:

the electric core assembly, the circuit board assembly and the supporting framework penetrate through the shell, and a positioning notch is formed in the shell;

the latch groove is fixed in the positioning notch, a sunken buckle position is arranged on the latch groove, and when the battery pack is matched with the first equipment, the buckle position on the latch groove is matched with the positioning device on the first equipment.

Further, one end of the latch groove is provided with a convex part extending outwards, and the upper surface of the convex part abuts against the inner wall surface of the shell.

Further, the latch slot comprises an arc-shaped abutting surface, and the abutting surface abuts against the side surface of the battery cell.

Furthermore, two ends of the housing along the length direction are provided with openings, namely a first opening and a second opening, respectively, and the positioning notch is arranged at one end far away from the first opening;

The shell assembly further comprises a limiting end plate, and the limiting end plate is fixed to the second opening; the electric core assembly, the circuit board assembly and the supporting framework enter the inner part of the shell through the first opening.

Further, the support framework comprises a positioning end plate, and the positioning end plate abuts against one end, far away from the circuit board assembly, of the electric core assembly; one end of the latch groove far away from the first opening abuts against the positioning end plate;

the shell assembly further comprises a fastener, and the fastener is fixedly connected with the limiting end plate, the supporting framework and the latch slot in sequence.

Furthermore, the edge of the latch slot far away from the first opening extends outwards to form a shielding part, and the plane of the end face of the shielding part far away from the first opening is coincident with the plane of the end face of the housing far away from the first opening.

Furthermore, the shell assembly further comprises a decorative end plate, and the decorative end plate is fixed to the second opening and abuts against the limiting end plate; the end face, far away from the first opening, of the decorative end plate, the plane where the end face, far away from the first opening, of the shielding portion is located and the plane where the end face, far away from the first opening, of the shell is located coincide.

Further, the battery pack further includes:

a first discharge interface for mating with the first device and providing power support for the first device;

the first charging interface is used for being matched with power supply equipment and supplying power to the battery pack;

the first discharging interface and the first charging interface are both located at one end, close to the circuit board assembly, of the battery pack.

Further, the battery pack further comprises a second discharging interface, wherein the second discharging interface is used for being matched with the second device and providing power support for the second device;

the battery pack comprises an interface end plate, the interface end plate is arranged at one end, close to the circuit board assembly, of the battery pack, and the surface of the interface end plate is inwards recessed to form a positioning space used for containing the second discharging interface.

Further, the second discharge interface comprises a lead portion and an interface portion; the positioning space comprises a first positioning cavity for accommodating the wire part and a second positioning cavity for accommodating the interface part;

the first positioning cavity is arranged on the interface end plate in a bending mode; and/or at least part of the second positioning cavity extends inwards along the length direction of the battery pack.

Further, the battery pack further comprises a support framework for fixing the battery cell assembly, and the interface end plate is used as at least part of the support framework; or, the battery package still includes and is used for holding power management module, electric core subassembly and circuit board assembly's casing subassembly, the interface end plate is as casing subassembly's at least part.

Further, the battery cell assembly further comprises a first electrode and a second electrode;

the battery pack also comprises a nickel sheet assembly, wherein the nickel sheet assembly comprises a first connecting part fixedly connected with the first electrode and a second connecting part fixedly connected with the second electrode; at least part of the first connecting part and the second connecting part is bent and penetrates through the circuit board assembly, and the first electrode and the second electrode are electrically connected to the circuit board assembly.

Further, the power management module includes:

the first power management module is fixed on the first circuit board and used for converting input voltage into first target output current, and the first target output current is used for supplying power to the first equipment;

and the second power management module is fixed on the second circuit board and used for converting the input voltage into second target output current, and the second target output current is used for supplying power to the second equipment.

Furthermore, the circuit board assembly further comprises a button circuit board, and the battery pack further comprises a support framework for fixing the battery core assembly;

the button circuit board is fixed on the support framework and is electrically connected to the first circuit board and/or the second circuit board;

the whole that first circuit board and/or the second circuit board formed with the button circuit board set up in the relative both ends that set up of electric core subassembly along the axial.

Furthermore, be provided with the pilot lamp on the button circuit board, the pilot lamp is used for showing the charge-discharge condition of battery package, and is used for showing the electric quantity of battery pack spare.

Further, the support skeleton comprises a positioning end plate which is used for abutting against the electric core assembly and is far away from the first circuit board and the second circuit board; the button circuit board is fixed in the one end of keeping away from of location end plate electricity core subassembly.

Further, keeping away from of location end plate the one end of electricity core subassembly outwards extends and forms a plurality of reference columns, and is a plurality of the reference column encloses to become to be used for the card to establish the space is established to the card of button circuit board, and button circuit board is fixed in the space is established to the card.

Further, the first target current is greater than the second target current.

According to a second aspect of the present application, there is provided a battery pack comprising a battery pack assembly, a power management module and a circuit board assembly;

the circuit board assembly comprises a first circuit board and a second circuit board which are arranged in a staggered mode; the first circuit board and the second circuit board are arranged on the same side of the electric core assembly.

The power management module comprises a first power management module and a second power management module, wherein the first power management module is arranged on the first circuit board, and the second power management module is arranged on the second circuit board.

The technical scheme provided by the application can comprise the following beneficial effects:

in the above arrangement, the power management module is fixed on the two circuit boards, and the three are arranged at the same end of the battery pack along the length direction, so that the waste of space can be avoided by stacking the power management module, and the miniaturization of the volume of the battery pack is facilitated.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present application.

Fig. 2 is another schematic perspective view of a battery pack according to an embodiment of the disclosure.

Fig. 3 is a schematic exploded structural diagram of a battery pack according to an embodiment of the present application.

Fig. 4 is a schematic view of another exploded structure of a battery pack according to an embodiment of the present application.

Fig. 5 is a schematic perspective view illustrating an electric core assembly and a circuit board assembly of a battery pack according to an embodiment of the present application.

Fig. 6 is another perspective view of an electric core assembly and a circuit board assembly of a battery pack according to an embodiment of the present application.

Fig. 7 is a schematic perspective view illustrating an internal structure of a battery pack according to an embodiment of the present application.

Fig. 8 is another perspective view illustrating an internal structure of a battery pack according to an embodiment of the present disclosure.

Fig. 9 is a schematic perspective view of an electric core assembly and a nickel plate assembly of a battery pack according to an embodiment of the present application.

Fig. 10 is another perspective view of an electric core assembly and a nickel plate assembly of a battery pack according to an embodiment of the present application.

Fig. 11 is a schematic perspective view illustrating a supporting frame of a battery pack according to an embodiment of the present disclosure.

Fig. 12 is another perspective view of a support frame of a battery pack according to an embodiment of the present disclosure.

Fig. 13 is a schematic perspective view illustrating an internal structure of a battery pack according to an embodiment of the present application.

Fig. 14 is a schematic perspective view illustrating an internal structure of a battery pack according to an embodiment of the present application.

Fig. 15 is a perspective view of a latch slot of a battery pack according to an embodiment of the present application.

Fig. 16 is another perspective view of the latch slot of the battery pack according to an embodiment of the present application.

Fig. 17 is a schematic cross-sectional view of a battery pack according to an embodiment of the present application.

Fig. 18 is an enlarged view at a region a in fig. 17.

Description of the reference numerals

Battery pack 10

Electrical core assembly 100

Battery cell 110

First electrode 111

Second electrode 112

Power management module 200

First power management module 210

Second power management module 220

Circuit board assembly 300

First circuit board 310

Second circuit board 320

Accommodation space 330

Conductive post 340

Button circuit board 350

Indicator light 351

Lampshade 352

Insulating plate 360

Control button 370

Housing assembly 400

Outer casing 410

Positioning notch 411

First opening 413

Second opening 414

Latch slot 420

Buckle position 421

Convex part 422

Abutting surface 423

Shielding part 424

Limit end plate 430

Fastener 440

Decorative end panel 450

Supporting framework 500

First support part 510

Supporting end face 511

First heat sink 512

Positioning end plate 513

Positioning column 5131

Card space 5132

Second heat sink 514

Second supporting part 520

Nickel sheet assembly 600

First connection part 610

Second connection part 620

Positioning part 630

First discharge interface 710

Second discharge interface 720

Lead part 721

Interface section 722

First charging interface 800

Interface end plate 900

Positioning space 910

First positioning cavity 911

Second positioning cavity 912

First discharge port 920

First charging port 930

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The manner in which the following exemplary embodiments are described does not represent all manner of consistency with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features in the embodiments described below may be combined with each other without conflict.

As shown in fig. 1 and 2, the present application relates to a battery pack 10, and the battery pack 10 may be adapted to a first device or a second device. In other words, the battery pack 10 may provide different target currents with different sizes to different electronic devices to adapt to different electronic devices.

In this embodiment, the first device is a high-current electric device, for example: garden tools, power tools, and the like. The second device is a low-current electric device, such as a mobile phone, an earphone, a tablet, a smart watch and the like in a 3C product.

As shown in fig. 3 and 4, and as necessary, with reference to fig. 5. The battery pack 10 includes a core assembly 100, a power management module 200, a circuit board assembly 300, a housing assembly 400, and a support frame 500.

The power management module 200 is electrically connected to the battery assembly 100, and is configured to convert an input voltage of the battery assembly 100 into a first target current for supplying power to a first device, and convert the input voltage of the battery assembly 100 into a second target current for supplying power to a second device. Specifically, referring to fig. 5, the power management module 200 includes a first power management module 210 and a second power management module 220. The first power management module 210 is configured to convert the input voltage into a first target output current, where the first target output current is used to power a first device. The second power management module 220 is configured to convert the input voltage into a second target output current, where the second target output current is used to power a second device. The first target current is greater than the second target current.

As shown in fig. 5 and 6, the circuit board assembly 300 is electrically connected to the core assembly 100 and the power management module 200, and the core assembly 100 includes a first electrode (positive electrode) and a second electrode (negative electrode). The first electrode and the second electrode are electrically connected to the circuit board assembly 300, and are electrically connected to the circuit board assembly 300 through the power management module 200. Specifically, the circuit board assembly 300 includes a first circuit board 310 and a second circuit board 320. The power management module 200 is fixed to the first circuit board 310 and the second circuit board 320. In some embodiments, the first power management module 210 is fixed to the first circuit board 310, and the second power management module 220 is fixed to the second circuit board 320, so as to facilitate the subsequent maintenance work and improve the space utilization rate. At this time, the first circuit board 310 serves as a large current protection board to supply a large current to the first device; the second circuit board 320 serves as a PD protection board to supply a small current to the second device. Of course, in other embodiments, the first power management module 210 and the second management module need not be fixed in the manner described above. The electronic components in the power management module 200 may be arranged according to a space enclosed by the first circuit board 310 and the second circuit board 320 after being fixed. For example, the first management module may be fixed to both the first circuit board 310 and the second circuit board 320, or may be fixed to only the first circuit board 310 or the second circuit board 320; similarly, the second management module may be fixed to both the first circuit board 310 and the second circuit board 320, or may be fixed to only the first circuit board 310 or the second circuit board 320, and the specific arrangement is determined according to the space between the first circuit board 310 and the second circuit board 320.

It should be noted that, in the embodiment shown in fig. 6, since the first circuit board and the second circuit board are arranged in parallel, the power management module 200 located between the two circuit boards is shielded and cannot be seen.

As shown in fig. 7 and 8, and as shown in fig. 1 to 4, if necessary, the support frame 500 is used to fix the electric core assembly 100 and the circuit board assembly 300. At least parts of the power management module 200, the cell assembly 100, the circuit board assembly 300 and the support frame 500 are disposed inside the housing assembly 400, and the power management module 200, the first circuit board 310 and the second circuit board 320 are located at the same end of the battery pack 10. In this embodiment, the support frame 500 may be used to connect the electrical core assembly 100, the circuit board assembly 300 and the power management module 200 into a whole, and then the whole is fixed inside the housing assembly 400. Of course, in other embodiments, the supporting frame 500 may not be provided, and the electronic component and the circuit board assembly 300 may be fixed only by the housing assembly 400.

As shown in fig. 9 and 10, and as necessary in fig. 5-8. Electrical core assembly 100 includes at least one electrical core 110. In the present embodiment, the battery core assembly 100 is formed by connecting multiple cylindrical battery cells 110 in series, and the battery cells 110 are arranged in a direction X perpendicular to the axis of the battery cells 110. Specifically, the battery pack 10 further includes a nickel sheet assembly 600, and the nickel sheet assembly 600 is used for connecting a plurality of battery cells 110 in series to form the battery cell assembly 100. The nickel plate assembly 600 includes a first connection part 610 fixedly connected to the first electrode 111 of the core assembly 100 and a second connection part 620 fixedly connected to the second electrode 112. At least portions of the first and

second connection portions

610 and 620 are bent and pass through the circuit board assembly 300, and electrically connect the first and second electrodes 111 and 112 to the circuit board assembly 300. In the above-described arrangement, the nickel plate assembly 600 functions to electrically connect the battery cells 110 to form the battery cell assembly 100, and to electrically connect the battery cell assembly 100 to the circuit board assembly 300. Meanwhile, the nickel plate assembly 600 and the battery cells 110 are fixedly connected through spot welding, so that the function of fixedly connecting each adjacent battery cell 110 is achieved, and meanwhile, the battery pack 100 and the circuit board assembly 300 are also fixedly connected. The first connection portion 610 and the second connection portion 620 penetrate into the circuit board assembly 300 in a bending manner, so that space can be effectively utilized, and space utilization rate is improved.

Based on this, the power management module 200, the first circuit board 310 and the second circuit board 320 are located at any end of the battery cell 110 in the axial direction. Of course, in other embodiments, the battery cells 110 may have other shapes, and the arrangement of the battery cells 110 may also be different, and at this time, the power management module 200, the first circuit board 310, and the second circuit board 320 are located at any section of the battery pack 10 along the length direction. Since the battery pack 10 needs to be adapted to the first electronic device and the second electronic device, and the current consumption of the two devices is different. In other words, the power management module 200 in the battery pack 10 needs to convert the same voltage into the first target current and the second target current having different magnitudes, and thus two sets of management modules (the first management module and the second management module) are required.

In one design, the first and second management modules are tiled and fixed on the same circuit board, and the circuit board is placed on the periphery of the battery pack 100, which may result in an excessive thickness or width of the battery pack 10 because the first and second management modules include electronic components of various sizes and include a portion of the electronic components (e.g., capacitors) having a larger size. Meanwhile, since the tiling and fixing manner is adopted, in order to meet the installation requirement of the electronic components with larger size, an excessively large space needs to be reserved, so that a larger space in the housing assembly 400 is wasted, and finally, the miniaturization design of the battery pack 10 is difficult to realize. However, in the above arrangement of the present application, the power management module 200 is fixed to the two circuit boards (the first circuit board 310 and the second circuit board 320), and the three are disposed at the same end of the battery pack 10 along the length direction, so that the power management module 200 is stacked, thereby avoiding the waste of space and facilitating the miniaturization of the battery pack 10.

As shown in fig. 3, 5, and 7, in one embodiment, the first circuit board 310 and the second circuit board 320 are perpendicular to each other. The first circuit board 310 and the second circuit board 320, which are vertically arranged, can effectively utilize the space at the ends of the battery pack 10.

Further, the first circuit board 310 and the second circuit board 320 are fixed on the support frame 500 and the electric core assembly 100. Meanwhile, the supporting framework 500 plays a role in fixing and bearing the electric core assembly 100. In this way, the first circuit board 310 and the second circuit board 320 are fixedly connected. Of course, in other embodiments, the first circuit board 310 can be fixedly connected only through the supporting frame 500, and also can be fixedly connected only through the electric core assembly 100. Alternatively, as described above, when the battery pack 10 does not include the support frame 500, the first circuit board 310 and/or the second circuit board 320 may also be fixedly connected by being fixed to the housing assembly 400.

It should be noted that the first circuit board 310 and the second circuit board 320 are fixed to one end of the electrical core assembly 100 through the nickel plate assembly 600.

Since the first circuit board 310 and the second circuit board 320 are vertically disposed, the area of the surface disposed opposite between the first circuit board 310 and the second circuit board 320 is small. If the fixing modes such as welding or bonding with small area are adopted, the fixed connection and the electric connection between the two are realized, and the risk of fracture of the connection structure exists. Therefore, in this embodiment, the supporting frame 500 is provided with a fastening position 421 for supporting and fastening the circuit board assembly 300, and the first circuit board 310 and the second circuit board 320 are respectively and fixedly connected to the supporting frame 500. Meanwhile, the first circuit board 310 and the second circuit board 320 are electrically connected by a wire.

In the above arrangement, the first circuit board 310 and the second circuit board 320 are fixedly connected by the supporting frame 500, and are flexibly and electrically connected by a wire. The first circuit board 310 and the second circuit board 320 are electrically connected while the stability of the fixed connection is ensured.

Further, the plane of the second circuit board 320 is perpendicular to the axial direction of the electric core assembly 100, and the plane of the first circuit board 310 is parallel to or coincident with the axial direction of the electric core assembly 100. After the cells 110 are connected in series through the nickel sheet assembly 600, a first electrode 111 and a second electrode 112 of the cell assembly 100 are formed. The nickel plate assembly 600 is fixed to the second circuit board 320 and electrically connected to the first electrode 111 and the second electrode 112 of the electric core assembly 100. In other words, the nickel plate assembly 600 serves to electrically connect the first electrode 111 and the second electrode 112 of the electric core assembly 100 to the second circuit board 320. Of course, in other embodiments, the positions of the first circuit board 310 and the second circuit board 320 may be reversed.

In the above arrangement, the nickel plate assembly 600 functions to connect the plurality of battery cells 110 in series and fix the plurality of battery cells 100 to form a whole. Meanwhile, the nickel plate assembly 600 may also serve as an electrical connection relationship between the electric core assembly 100 and the circuit board assembly 300. Further, the nickel plate assembly 600 is fixed to the circuit board assembly 300 and the battery cell 100 by welding or spot welding, so as to enhance the fixed connection relationship between the battery cell assembly 100 and the circuit board assembly 300.

Further, the first circuit board 310 and the second circuit board 320 enclose an accommodating space 330 for accommodating the power management module 200. The orthogonal projection of the accommodating space 330 in the transverse direction is less than or equal to the orthogonal projection of the whole formed by the first circuit board 310 and the second circuit board 320 in the transverse direction, and the projection of the accommodating space 330 in the vertical direction is less than or equal to the projection of the whole formed by the first circuit board 310 and the second circuit board in the vertical direction. In other words, the power pipe unit module is fixed on the first circuit board 310 and the second circuit board 320, and the space of the power pipe unit module does not exceed the area enclosed by the first circuit board 310 and the second circuit board 320, so that the power management module 200 can fully utilize the accommodating space 330, and the space utilization rate is improved as much as possible.

As shown in fig. 4, 6 and 8, in another embodiment, the first circuit board 310 and the second circuit board 320 are parallel to each other. The second circuit board 320 is fixed to the first circuit board 310. In the embodiments corresponding to the above figures, the planes on which the first circuit board 310 and the second circuit board 320 are located are both parallel to the axial direction of the battery cell 110. Of course, in other embodiments, the planes of the first circuit board 310 and the second circuit board 320 may also be perpendicular to the axial direction of the battery cells 110.

Further, the circuit board assembly 300 further includes a conductive pillar 340, and two ends of the conductive pillar 340 are fixedly connected to the first circuit board 310 and the second circuit board 320, and electrically connected to the first circuit board 310 and the second circuit board 320.

In the above arrangement, since the first circuit board 310 and the second circuit board 320 are arranged in parallel, the area of the surface where the first circuit board 310 and the second circuit board 320 are arranged oppositely is large, and the conductive column 340 with a large cross section for electrically and fixedly connecting the first circuit board 310 and the second circuit board 320 can be arranged on the large surface. At this time, the first circuit board 310 and the second circuit board 320 can be firmly and fixedly connected through the conductive posts 340, and can also be effectively electrically connected, and the structure is simple and has reliable stability.

Continuing to observe the upper drawing, the first circuit board 310 is disposed below the second circuit board 320, and the first circuit board 310 is fixedly connected to the supporting frame 500. Meanwhile, the nickel plate assembly 600 is fixed to the first circuit board 310, and further enhances the fixed connection relationship between the core assembly 100 and the circuit board assembly 300 while performing the electrical connection between the core assembly 100 and the circuit board assembly 300. Of course, in other embodiments, the positions of the first circuit board 310 and the second circuit board 320 may be exchanged up and down.

Further, the first circuit board 310 and the second circuit board 320 are spaced apart from each other and define an accommodating space 330 for accommodating the power management module 200. The electronic components in the power management module 200 are respectively soldered to the first circuit board 310 and the second circuit board 320, and are located between the first circuit board 310 and the second circuit board 320. When the circuit board assembly 300, the electric core assembly 100, etc. are fixed inside the housing assembly 400, if there is a certain gap between the inner wall of the housing assembly 400 and the circuit board assembly 300, some electronic components in the power management module 200 can be fixed on the end surface of the first circuit board 310 away from the second circuit board 320, or fixed on the end surface of the second circuit board 320 away from the first circuit board 310. It is only necessary to ensure that most of the components of the power management module 200 are located between the first circuit board 310 and the second circuit board 320.

Of course, in other embodiments, the first circuit board 310 and the second circuit board 320 may also be arranged in a staggered manner at other angles, but it is necessary to ensure that the first circuit board 310 and the second circuit board 320 are disposed on the same side of the electrical core assembly 100, so as to achieve a miniaturized design of the battery pack 10.

As shown in fig. 11 and 12, in conjunction with fig. 3, 4, 7 and 8, as necessary. The support frame 500 includes a first support portion 510 and a second support portion 520.

Wherein, the first support part 510 is used for supporting the cell assembly 100. The second supporting part 520 is used to support the circuit board assembly 300. The first and second supporting

parts

510 and 520 are arranged in the lengthwise direction of the battery pack 10. It should be noted that the length direction of the battery pack 10 is parallel to the axial direction of the electric core assembly 100, and the electric core 110 in the electric core assembly 100.

Through the above arrangement, the internal space of the supporting framework 500 is divided functionally and structurally, so that the structural arrangement of the supporting framework 500 is more reasonable, and the corresponding electric core assembly 100, the corresponding circuit board assembly 300 and the corresponding power management module 200 can be matched. The circuit board assembly 300 may be fixed to the second supporting part 520, thereby implementing a structure in which the circuit board assembly 300 is located at one end of the battery pack 10.

It is noted that in some embodiments, the support frame 500 may be completely located inside the housing assembly 400 and be enclosed by the housing assembly 400. Alternatively, in other embodiments, the end surface of the support frame 500 may be exposed to the case assembly 400 and constitute at least a portion of the end surface of the battery pack 10.

Further, the first supporting part 510 includes an arc-shaped supporting end surface 511, and the supporting end surface 511 abuts against the side surface of the battery cell 110, so as to support the battery cell 110 firmly.

As shown in fig. 11, in one embodiment, the supporting end surface 511 extends from one end of the second supporting portion 520 to the other end of the second supporting portion 520. Through the above arrangement, the side surface of the battery cell 110 is fully supported, so that the risk of displacement of the battery cell 110 is avoided.

As shown in fig. 12, in another embodiment, the support end surfaces 511 are only located at both ends of the first support part 510, and serve to support both ends of the cell assembly 100. Through the arrangement, when enough support is realized and fixation is realized, the contact area between the support end surface 511 and the electric core assembly 100 can be properly reduced, so that the heat dissipation capability of the electric core assembly 100 is improved, the safety of the battery pack 10 is protected, and the service life of the battery pack is prolonged.

Further, as shown in fig. 12, a first heat dissipation groove 512 penetrating in a direction perpendicular to the axis of the battery cell 110 is formed below the first supporting portion 510, and at least a portion of the battery cell assembly 100 is exposed through the first heat dissipation groove 512. Through the above arrangement, the heat dissipation capability of the battery pack assembly 100 can be further improved, the safety of the battery pack 10 can be protected, and the service life of the battery pack can be prolonged.

As shown in fig. 11-14, the first supporting part 510 further includes a positioning end plate 513, the positioning end plate 513 is located at an end of the first supporting part 510 far from the second supporting part 520, and an end of the electric core assembly 100 abuts against the positioning end plate 513 to limit the electric core assembly 100. Positioning end plate 513 has a second heat dissipating slot 514 formed therethrough, and at least a portion of electric core assembly 100 is exposed through second heat dissipating slot 514. Through the arrangement, when the electric core assembly 100 is limited, the contact area between the positioning end plate 513 and the electric core assembly 100 can be properly reduced, so that the heat dissipation capability of the electric core assembly 100 is further improved, and the safety of the battery pack 10 is protected, and the service life of the battery pack is prolonged.

As further shown in fig. 2 and 3, the nickel plate assembly 600 includes a positioning portion 630 fixed to an end of the electric core assembly 100, and at least a portion of the positioning portion 630 located at an end of the electric core assembly 100 away from the second support portion 520 is located in the second heat dissipation groove 514. With the above arrangement, the problem that the length of the battery pack 10 is increased due to the excessive space occupied by the positioning part 630 in the nickel plate assembly 600 is avoided. Meanwhile, the heat dissipation capability of the electric core assembly 100 is also improved.

As shown in fig. 1-4, in conjunction with fig. 15-18, as necessary. The housing assembly 400 includes an outer shell 410, a latch slot 420, and a retention end plate 430.

Wherein, the electric core assembly 100, the circuit board assembly 300 and the supporting framework 500 are arranged inside the outer shell 410 in a penetrating way, and a positioning notch 411 is arranged on the peripheral side of the outer shell 410. The latch slot 420 is fixed to the positioning notch 411, and the latch slot 420 is provided with a concave buckling position 421, so that when the battery pack 10 is matched with the first device, the buckling position 421 on the latch slot 420 is matched with the positioning device on the first device. For example, the positioning device on the first device is a latch, and when the battery pack 10 is adapted to the first device, the fastening position 421 is fastened to the latch, so as to fix the battery pack 10 and the first device, and prevent the first device from falling off the battery pack 10 during operation.

In this embodiment, the latch slot 420 and the housing 410 are separate components that are mated and secured together when the battery pack 10 is assembled. With this arrangement, the latch slot 420 and the housing 410 can be made of two different materials. For example, in order to ensure a stable connection between the latch groove 420 and the latch in the first device and reduce the difficulty of the process, the latch groove 420 may be made of a metal material having high hardness and good stability. To ensure portability of the battery pack 10, the housing 410 may be made of a lightweight plastic. Of course, in other embodiments, latch channel 420 and housing 410 may be integrally formed components.

Further, as shown in fig. 17 and 18, one end of the latch groove 420 is provided with a boss 422 extending outward, an upper surface of the boss 422 abuts against an inner wall surface of the housing 410, and an end surface 4221 of the latch groove 420 provided with the boss 422 abuts against a side wall surface 4111 of the housing 410 provided with the positioning notch 411. With the above arrangement, the movement of the latch slot 420 in the direction away from the battery cell 110 is restricted, and at the same time, the movement of the latch slot 420 in the left direction in the figure is restricted.

Further, as shown in fig. 15 and 16, it is necessary to combine fig. 7, 8, 11 and 12. The latch slot 420 and the positioning notch 411 are far away from the second support part 520 and are disposed above the first support part 510. As shown in fig. 16, the bottom of the latch slot 420 further includes an arc-shaped abutting surface 423, and the abutting surface 423 abuts against the peripheral side surface of the battery cell 110. In this way, the latch slot 420 is restricted from moving in a direction close to the battery cell 110.

As shown in fig. 17 and 18, and also as shown in fig. 3 and 4, the housing 410 is provided with openings at both ends in the length direction, namely a first opening 413 and a second opening 414, respectively, and a positioning notch 411 is provided at one end far from the first opening 413. In other words, the first opening 413 is close to the second support part 520 and is far from the first support part 510; the second opening 414 is adjacent to the first support part 510 and is distant from the second support part 520.

A restraint end plate 430 is secured to the second opening 414. The electrical core assembly 100, the circuit board assembly 300 and the support backbone 500 enter the interior of the housing 410 through the first opening 413. Thereafter, the latch slot 420 is secured in the positioning notch 411. Finally, the positioning end plate 513 is fixed to the second opening 414. In the above manner, the fixed mounting of the assembly of the outer shell 410, the assembly of the electric core 100, the assembly of the circuit board 300, the supporting framework 500 and the latch slot 420 is realized.

Wherein an end of the latch slot 420 distal to the first opening 413 abuts against the positioning end plate 513. The housing assembly 400 further includes a fastener 440, and the fastener 440 is fixedly connected to the position-limiting end plate 430, the positioning end plate 513 of the support frame 500, and the latch groove 420 in sequence. In the above manner, the latch groove 420, the support frame 500 and the housing assembly 400 are fixedly coupled.

Further, the edge of the latch slot 420 far from the first opening 413 extends outwards to form a shielding part 424, and the plane of the end surface of the shielding part 424 far from the first opening 413 is coincident with the plane of the end surface of the housing 410 far from the first opening 413. Through the arrangement, the latch groove 420 is flush with the outer surface of the shell 410, and the integral aesthetic degree is improved. Meanwhile, foreign matters on the surface can be deposited on uneven connection positions.

Further, to avoid exposure due to the fasteners 440, the housing assembly 400 further includes a decorative end plate 450, wherein the decorative end plate 450 is fixed to the second opening 414 and abuts against the surface of the position-limiting end plate 430 away from the positioning end plate 513. The decorative end plate 450 can be fixedly connected with the edge of the shell 410 by ultrasonic welding, so as to shield the structures such as the fasteners 440 in the shell 410 and the like, thereby realizing the cloaking. The end face of the decorative end plate 450 far from the first opening 413, the plane where the end face of the shielding portion 424 far from the first opening 413 is located, and the plane where the end face of the outer shell 410 far from the first opening 413 is located coincide with each other. Through the above arrangement, the outer surface of the latch groove 420 and the housing assembly 400 can be further improved to be flush with each other, and the flatness of the outer surface of the battery pack 10 can be improved, thereby facilitating the improvement of the overall beauty. Meanwhile, the foreign matters on the surface can be deposited on the uneven connection part.

Further, as shown in fig. 4, the circuit board assembly 300 further includes a button circuit board 350, the button circuit board 350 is fixed to the support frame 500, and the button circuit board 350 is electrically connected to the first circuit board 310 and/or the second circuit board 320. The first circuit board 310 and the second circuit board 320 are integrally formed with the button circuit board 350 and are disposed at two ends of the electric core assembly 100, which are opposite to each other in the axial direction. In the present embodiment, the first and

second circuit boards

310 and 320 are disposed adjacent to the first opening 413, and the button circuit board 350 is disposed adjacent to the second opening 414.

The button circuit board 350 is electrically connected to the first circuit board 310 or the second circuit board 320 by a wire. The lead extends along the axial direction of the battery cell 110. The circuit board assembly 300 further includes an insulating plate 360, and the insulating plate 360 is disposed on the peripheral side 110 of the battery cell to isolate the wires from the battery cell.

As further shown in fig. 4, in this embodiment, button circuit board 350 is secured to an end of positioning end plate 513 remote from electrical core assembly 100. Specifically, one end of the positioning end plate 513, which is far away from the core assembly 100, extends outward to form a plurality of positioning columns 5131, the plurality of positioning columns 5131 enclose a clamping space 5132 for clamping the button circuit board 350, and the button circuit board 350 is fixed in the clamping space 5132. Through the above manner, the fixed connection of the button circuit board 350 is realized, and meanwhile, the button circuit board 350 can be prevented from occupying too much space, which is beneficial to realizing the miniaturized design of the battery pack 10.

Further, when the limit end plate 430, the positioning end plate 513 of the support frame 500 and the latch groove 420 are fixedly connected by the fastener 440, the fastener 440 is fixed to the positioning column 5131 protruding from the positioning end plate 513. With the above arrangement, the problem that the thickness of the positioning end plate 513 is too thick due to the positioning hole for accommodating the fastener having a certain depth being provided on the positioning end plate 513 can be avoided. The positioning column 5131 is fully utilized to have the dual function of fixing the fastening member 440 and the button circuit board 350.

In this embodiment, the button circuit board 350 may be used to control charging and discharging of the battery pack 10, and may also be used to control displaying of the electric quantity of the battery pack 10. Of course, in other embodiments, the battery pack 10 can be automatically charged and discharged, and the button circuit board 350 can be only used for controlling the power display of the battery pack 10. In this embodiment, the battery pack 10 is provided with a control button 370 on an end surface thereof near the button circuit board 350. The user can control the switch buttons on the button circuit board 350 by clicking the control buttons 370, so as to realize charging and discharging of the battery pack 10 and/or realize power display.

Further, as shown in fig. 4, an indicator light 351 is disposed on the button circuit board 350, and the indicator light 351 is used for displaying the charging and discharging conditions of the battery pack 10 and displaying the power of the battery pack assembly 100. A lamp shade 352 for guiding light is further mounted on the indicator light 351. An end of the lamp housing 352 remote from the button circuit board 350 is exposed and serves to display an on or off message of the indicator lamp 351 to a user. Specifically, the indicator lights 351 may display different colors to display charging or discharging, and may also display different colors to display the power of the power core assembly 100. Through the color reminding, the discharging of the battery pack 10 by the user can be reduced or avoided, the use safety is improved, and the service life of the battery can be prolonged. It is also possible to set the number of the indicator lights 351 to be plural, and to correspond to the amount of power of the cell module 100 by lighting different numbers of the indicator lights 351. Through the arrangement, the experience of human-computer interaction is improved.

As shown in fig. 5 and 6, and as necessary, fig. 1, 3 and 4. The battery pack 10 further includes a first discharging interface 710, a second discharging interface 720, and a first charging interface 800.

The first discharge interface 710 is for mating with a first device and providing power support for the first device. The second discharge interface 720 is for mating with a second device and providing power support for the second device. The first charging interface 800 is used for cooperating with an external power supply device and for supplying power to the battery pack 10. The first discharging interface 710 and the first charging interface 800 are both located at one end of the battery pack 10 close to the circuit board assembly 300. In the above arrangement, the first discharging interface 710 and the first charging interface 800 are electrically connected to the circuit board assembly 300.

Further, the first discharging interface 710 and the first charging interface 800 are disposed on the same side of the battery pack 10. In the above arrangement, when the battery pack 10 is mated with and supplies power to the first device, at least a portion of the battery pack 10 enters the interior of the first device. At this time, the first discharging interface 710 of the battery pack 10 matches with the power supply interface corresponding to the first device. In other words, the end of the battery pack 10 where the first discharging interface 710 is disposed enters the interior of the first device, and then the first charging interface 800 located on the same side as the first discharging interface 710 also enters the interior of the first device. Then, when the battery pack 10 supplies a large current to the first device, the first charging interface 800 is covered, and the battery pack 10 cannot be charged. Through the arrangement, the situation that the battery pack 10 is powered on and discharged simultaneously due to misoperation of a user is avoided, the safety performance of the battery pack 10 is improved, and the service life of the battery pack is prolonged.

In the present embodiment, the second discharge interface 720 includes a wire part 721 and an interface part 722. The interface portion 722 may include a plurality of different discharging interfaces (e.g., Lighting interface, Typr-C interface, etc.), and through the above arrangement, the second discharging interface 720 may charge a second device having different types of interfaces, so as to increase convenience of use.

As shown in fig. 1, 11 and 12, the battery pack 10 includes an interface terminal plate 900, the interface terminal plate 900 is disposed at one end of the battery pack 10 close to the circuit board assembly 300, and a surface of the interface terminal plate 900 is recessed inward to form a positioning space 910 for accommodating the second discharge interface 720. In this embodiment, an end plate of the support frame 500 on a side away from the first support portion 510 serves as the interface end plate 900, in other words, the interface end plate 900 serves as at least a part of the support frame 500, and the interface end plate 900 and the positioning end plate 513 are oppositely disposed along a length direction of the support frame 500. Of course, in other embodiments, the interface end plate 900 may also be at least part of the housing assembly 400, in other words, the interface end plate 900 is at least part of the housing assembly 400.

Further, as shown in fig. 11 and 12, the positioning space 910 includes a first positioning cavity 911 for accommodating the lead portion 721 and a second positioning cavity 912 for accommodating the interface portion 722.

The first positioning cavity 911 is bent on the interface end plate 900, so that in a limited space, the space for accommodating the wire portion 721 can be increased, the length of the wire portion 721 can be increased appropriately, and the second device can be charged by using the second discharging interface 720.

At least a portion of the second positioning cavity 912 extends inwardly along the length of the battery pack 10. In other words, the second positioning cavity 912 protrudes into the interior of the second supporting portion 520. In the above arrangement, since only the circuit board assembly 300 and the power management module 200 are disposed inside the second support part 520, it also reserves a part of the remaining space. The second positioning cavity 912 is extended into the second supporting part 520, so that the space of the second positioning cavity can be fully utilized, the utilization rate of the inner space of the battery pack 10 is effectively improved, and the miniaturization design of the battery pack 10 is facilitated. Meanwhile, the second positioning cavity 912 extends towards the inside of the battery pack 10, so that the end surface area of the interface end plate 900 occupied by the second positioning cavity 912 can be reduced, more end surface areas can be reserved to arrange the first positioning cavity 911, the length of the lead part 721 can be properly prolonged, and the use convenience of a user is improved.

As shown in fig. 1, the interface end plate 900 is further provided with a first discharging port 920 and a first charging port 930 which penetrate therethrough. The first discharge port 920 is disposed corresponding to the first discharge interface 710, so that the first discharge interface 710 is exposed. When the battery pack 10 is matched with a first device to supply power to the first device, the power supply interface of the first device is electrically connected to the first discharge interface 710 through the first discharge port 920. The first charging port 930 is disposed corresponding to the first charging port 800 such that the first charging port 800 is exposed. When the battery pack 10 is matched with an external power device to supply power to the battery pack 10, the contact of the external power device is electrically connected to the first charging interface 800 through the first charging port 930.

In the above arrangement, the first discharging port 920, the first charging port 930 and the second discharging interface 720 are disposed on the same side of the battery pack 10. When the battery pack 10 is mated with and provides power to a first device, at least a portion of the battery pack 10 enters the interior of the first device. At this time, the first discharging interface 710 of the battery pack 10 matches with the power supply interface corresponding to the first device. In other words, one end of the battery pack 10, at which the first discharging interface 710 and the first discharging port 920 are disposed, enters the interior of the first device, and then the first charging interface 800, the corresponding first charging port 930, and the second discharging interface also enter the interior of the first device. Then, when the battery pack 10 supplies a large current to the first device, not only the first charging port 800 and the first charging port 930 are covered, so that the battery pack 10 cannot be charged. Meanwhile, the second discharging interface 720 for cooperating with the second device is also covered, so that the battery pack 10 cannot discharge the first device and the second device at the same time. Because the target currents output by the first discharging interface 710 and the second discharging interface 720 are different in magnitude, the battery pack 10 is prevented from simultaneously discharging the first device and the second device, the safety performance of the battery pack 10 is improved, and the service life of the battery pack is prolonged.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A battery pack for adapting a first device or a second device, the battery pack comprising:

a battery cell assembly;

the power management module is electrically connected with the power core assembly and used for converting the input voltage of the power core assembly into a first target current for supplying power to the first equipment and converting the input voltage of the power core assembly into a second target current for supplying power to the second equipment;

2. The battery pack of claim 1, wherein the first circuit board and the second circuit board are perpendicular to each other.

3. The battery pack of claim 2, further comprising a support frame for securing the electrical core assembly; the first circuit board and the second circuit board are fixed on the support framework and/or the electric core assembly; or,

4. The battery pack according to claim 3, wherein the first circuit board and the second circuit board are respectively fixedly connected to the support frame, and the first circuit board and the second circuit board are connected by a wire.

5. The battery pack according to claim 3, wherein the second circuit board is located in a plane perpendicular to an axial direction of the electric core assembly; the electric core assembly comprises a first electrode and a second electrode;

6. The battery pack of claim 3, wherein the first circuit board and the second circuit board enclose a receiving space for receiving the power management module;

7. The battery pack of claim 1, wherein the first circuit board and the second circuit board are parallel to each other, the second circuit board being fixed to the first circuit board.

8. The battery pack of claim 7, wherein the circuit board assembly further comprises a conductive post, and two ends of the conductive post are fixedly connected with and electrically connected with the first circuit board and the second circuit board.

9. The battery pack of claim 7, further comprising a support frame for securing the electrical core assembly;

10. The battery pack according to claim 7, wherein the first circuit board and the second circuit board are spaced apart from each other and enclose an accommodating space for accommodating the power management module.

11. The battery pack of claim 1, further comprising a support frame for securing the battery cell assembly, the support frame comprising:

a first support part for supporting the cell assembly;

a second supporting part for supporting the circuit board assembly;

wherein, first supporting part with the second supporting part is followed the length direction of battery package arranges, the length direction of battery package with the axial direction parallel of electric core subassembly.

12. The battery pack of claim 11, wherein the cell assembly comprises at least one cell; the first supporting part comprises an arc-shaped supporting end face, and the supporting end face is abutted against the side face of the battery cell.

13. The battery pack according to claim 12, wherein the supporting end surface extends from one end of the second supporting portion to the other end of the second supporting portion; or the supporting end faces are only located at two ends of the first supporting part and are used for supporting two ends of the electric core assembly.

14. The battery pack of claim 11, wherein a first heat sink is formed below the first support, and at least a portion of the battery cell assembly is exposed through the first heat sink.

15. The battery pack of claim 11, wherein the first support includes a positioning end plate at an end of the first support remote from the second support, the end of the cell assembly abutting against the positioning end plate;

set up the second radiating groove that runs through on the location end plate, electric core subassembly at least part passes through the second radiating groove exposes.

16. The battery pack of claim 15, further comprising a nickel tab assembly fixedly attached to the electric core assembly, the nickel tab assembly comprising a positioning portion fixed to an end of the electric core assembly;

17. The battery pack of claim 1, further comprising a housing assembly and a support frame for securing the battery pack assembly, wherein at least a portion of the power management module, the battery pack assembly, the circuit board assembly, and the support frame are disposed within the housing assembly.

18. The battery pack of claim 17, wherein the housing assembly comprises:

19. The battery pack of claim 18, wherein one end of the latch slot is provided with a projection extending outwardly, an upper surface of the projection abutting against an inner wall surface of the housing.

20. The battery pack of claim 18, wherein the latch slot comprises an arcuate abutment surface that abuts against a side surface of the cell.

21. The battery pack of claim 18, wherein the housing has openings at both ends in the length direction, namely a first opening and a second opening, and the positioning notch is disposed at an end away from the first opening;

the shell assembly further comprises a limiting end plate, and the limiting end plate is fixed to the second opening; the electric core assembly, the circuit board assembly and the supporting framework enter the shell through the first opening.

22. The battery pack of claim 21, wherein the support backbone comprises a positioning end plate that abuts an end of the cell assembly distal from the circuit board assembly; one end of the latch groove far away from the first opening abuts against the positioning end plate;

the shell assembly further comprises a fastener, and the fastener is fixedly connected with the limiting end plate, the positioning end plate of the supporting framework and the latch groove in sequence.

23. The battery pack of claim 22, wherein edges of the latch slot remote from the first opening extend outwardly to form a shield, and a plane of an end surface of the shield remote from the first opening coincides with a plane of an end surface of the housing remote from the first opening.

24. The battery pack of claim 23, wherein the housing assembly further comprises a decorative end plate secured to the second opening and abutting the retention end plate; the end face, far away from the first opening, of the decorative end plate, the plane where the end face, far away from the first opening, of the shielding portion is located and the plane where the end face, far away from the first opening, of the shell is located coincide.

25. The battery pack of claim 1, further comprising:

26. The battery pack of claim 1, further comprising a second discharge interface for mating with and providing power support for the second device;

27. The battery pack of claim 26, wherein the second discharge interface comprises a lead portion and an interface portion; the positioning space comprises a first positioning cavity for accommodating the wire part and a second positioning cavity for accommodating the interface part;

28. The battery pack of claim 27, further comprising a support backbone for securing the cell assembly, the interface end plate being at least part of the support backbone; or, the battery package still includes and is used for holding power management module, electric core subassembly and circuit board assembly's casing subassembly, the interface end plate is as casing subassembly's at least part.

29. The battery pack of any one of claims 1-28, wherein the electrical core assembly further comprises a first electrode and a second electrode;

30. The battery pack of any one of claims 1-28, wherein the power management module comprises:

31. The battery pack of any one of claims 1-28, wherein the circuit board assembly further comprises a button circuit board, the battery pack further comprising a support frame for securing the electrical core assembly;

the button circuit board is fixed on the support framework, is electrically connected to the first circuit board and/or the second circuit board, and is used for controlling charging and discharging of the battery pack;

32. The battery pack of claim 31, wherein the button circuit board is provided with an indicator light for displaying charging and discharging conditions of the battery pack and displaying electric quantity of the electric core assembly.

33. The battery pack of claim 32, wherein the support backbone includes a positioning end plate distal from the first and second circuit boards for abutting the electrical core assembly; the button circuit board is fixed in the one end of keeping away from of location end plate electricity core subassembly.

34. The battery pack of claim 33, wherein an end of the positioning end plate away from the battery core assembly extends outward to form a plurality of positioning posts, the positioning posts enclose a fastening space for fastening the button circuit board, and the button circuit board is fixed in the fastening space.

35. The battery pack of any one of claims 1-28, wherein the first target current is greater than the second target current.

36. A battery pack is characterized by comprising a battery pack core component, a power management module and a circuit board component;

the circuit board assembly comprises a first circuit board and a second circuit board which are arranged in a staggered mode; the first circuit board and the second circuit board are arranged on the same side of the electric core assembly;