CN112952242B

CN112952242B - Battery module assembly, battery module and electronic equipment

Info

Publication number: CN112952242B
Application number: CN202110351112.1A
Authority: CN
Inventors: 罗哲; 谢振东; 唐铭威
Original assignee: Dongguan Nvt Technology Co Ltd
Current assignee: Dongguan Nvt Technology Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-10-21
Anticipated expiration: 2041-03-31
Also published as: CN112952242A

Abstract

The application discloses electric core subassembly, battery module and electronic equipment, electric core subassembly include electrode subassembly, first casing, second casing, insulating part, first utmost point ear and second utmost point ear. The first shell and the second shell are respectively and electrically connected with the first pole and the second pole of the electrode assembly, and then the first pole lug and the second pole lug are respectively used for leading out corresponding electrodes, so that the two poles of the electrode assembly are led to the same side. Can be directly be in the same place utmost point ear and circuit board welding when electric core subassembly is connected with the circuit board, realize the electric connection of electric core subassembly and circuit board, effectively reduced the risk that electric core shell was welded or rosin joint. Materials such as nickel sheets and wires are not needed when the electric core assembly is connected with the circuit board, so that the cost can be saved, and the requirement on space is reduced.

Description

Battery module assembly, battery module and electronic equipment

Technical Field

The application relates to the technical field of batteries, in particular to a battery cell assembly, a battery module and electronic equipment.

Background

Button cells, also known as button cells, are widely used in electronic products, such as electronic watches, electronic scales, electronic toys, counters, etc., due to their small size.

Most button batteries in the prior art are buckling button batteries, and the positive and negative electrodes are located on the upper and lower sides of the battery core, and the battery core and the circuit board need to be connected in a manner of welding a nickel sheet or a lead on the surface of the battery core shell because the positive and negative electrodes are not located on the same side. However, with the above connection method, there is a risk that the cell casing is soldered or cold-soldered. In contrast, materials such as wires, nickel sheets or contacts need to be added to assist in connecting the battery cell and the main board in the process, and the required space is large.

Disclosure of Invention

In view of this, the application provides a battery pack assembly, battery module and electronic equipment to solve current button cell and need the material more, have the shell to be welded or the problem of rosin joint risk.

In a first aspect of the present application, there is provided a battery cell assembly comprising: the electrode assembly comprises an electrode assembly, a first shell, a second shell, an insulator, a first tab and a second tab.

The first shell comprises a first central part, a side wall extending from the first central part and a first edge extending from the side wall, wherein the first central part and the side wall enclose an accommodating space with an opening. The electrode assembly is arranged in the accommodating space, and the first shell is electrically connected with the first pole of the electrode assembly.

The second shell comprises a second central part and a second edge extending out of the second central part, and the second shell covers the opening of the accommodating space. The second shell is electrically connected with the second pole of the electrode assembly.

The insulating part is arranged between the first edge and the second edge, and the first shell is connected with the second shell through the insulating part.

The first tab is arranged on the first edge and electrically connected with the first shell.

And the second lug is arranged on the second edge and is electrically connected with the second shell.

Optionally, the insulating member protrudes from at least one of the first edge and the second edge in a first direction, and the first direction is an extending direction of the first edge.

Optionally, the first casing and the second casing are made of alloy materials.

Optionally, the first housing and the first tab are integrally formed, and the second housing and the second tab are integrally formed.

Optionally, a first notch is disposed at a position of the first edge corresponding to the second tab.

Optionally, the outer surfaces of the first shell and the second shell are provided with insulating layers.

Optionally, the first housing and/or the second housing is provided with a safety valve; the safety valve is used for opening when the pressure of the accommodating space is greater than a preset pressure value so as to discharge the fluid in the accommodating space.

Optionally, the first tab and/or the second tab are provided in plurality.

The second aspect of the application provides a battery module, including the circuit board and as above-mentioned first aspect any electric core subassembly, the circuit board respectively with the first utmost point ear and the second utmost point ear electric connection of electric core subassembly.

Optionally, the circuit board is provided with a first through hole corresponding to the first tab and a second through hole corresponding to the second tab, and the first tab and the second tab respectively pass through the first through hole and the second through hole and are electrically connected to the circuit board.

Optionally, the circuit board is electrically connected with the first tab through the first connecting piece, and the circuit board is electrically connected with the second tab through the second connecting piece.

Optionally, the first tab is provided with a first mounting hole, the second tab is provided with a second mounting hole, and the circuit board is provided with a third mounting hole and a fourth mounting hole. The first connecting piece penetrates through the first mounting hole and the third mounting hole to connect the circuit board and the first lug. The second connecting piece passes through the second mounting hole and the fourth mounting hole to connect the circuit board and the second tab.

In a third aspect, an electronic device is provided, which includes the battery module according to any one of the second aspect.

In a fourth aspect, an electronic device is provided, which includes a device main board and the electric core assembly as described in any one of the above first aspects, wherein the device main board is electrically connected to the first tab and the second tab of the electric core assembly respectively.

In the utility model provides an electric core subassembly, battery module and electronic equipment, through with first casing and second casing respectively with electrode subassembly's first utmost point and second utmost point electric connection, draw corresponding electrode respectively with first utmost point ear and second utmost point ear again, draw same one side with the two poles of the earth of electric core subassembly. Can be directly be in the same place utmost point ear and circuit board welding when electric core subassembly is connected with the circuit board, realize the electric connection of electric core subassembly and circuit board, effectively reduced the risk that cell core shell was welded or rosin joint. Materials such as nickel sheets and wires are not needed when the electric core assembly is connected with the circuit board, so that the cost can be saved, and the requirement on space is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an electrical core assembly according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an electrical core assembly according to an embodiment of the present application;

FIG. 3 is an exploded view of an embodiment of the electrical core assembly of the present application;

FIG. 4 is a schematic structural diagram of an electrical core assembly according to another embodiment of the present application;

FIG. 5 is a schematic structural diagram of an electrical core assembly according to yet another embodiment of the present application;

FIG. 6 is a schematic view of an alternate angle configuration of the cell assembly of FIG. 5;

FIG. 7 is an exploded view of the structure of an electrical core assembly according to yet another embodiment of the present application;

fig. 8 is a schematic structural view illustrating a battery module according to an embodiment of the present application;

fig. 9 is an exploded view illustrating a structure of a battery module according to an embodiment of the present application;

fig. 10 is a schematic structural view of a battery module according to another embodiment of the present application;

fig. 11 is an exploded view illustrating a battery module according to another embodiment of the present application;

fig. 12 is a schematic structural view of a battery module according to yet another embodiment of the present application;

fig. 13 is a schematic structural diagram of an electronic device according to an embodiment of the application;

fig. 14 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following embodiments and their technical features may be combined with each other without conflict.

Although the application has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present application includes all such modifications and alterations, and is limited only by the scope of the appended claims. In particular regard to the various functions performed by the above described components, the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the specification.

That is, the above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, such as mutual combination of technical features between various embodiments, or direct or indirect application to other related technical fields, are included in the scope of the present application.

In addition, in the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be considered as limiting the present application. In addition, structural elements having the same or similar characteristics may be identified by the same or different reference numerals. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The previous description is provided to enable any person skilled in the art to make or use the present application. In the foregoing description, various details have been set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Referring to fig. 1, 2 and 3, the electrical core assembly according to the present embodiment includes an electrode assembly 11, a first casing 21, a second casing 22, an insulating member 31, a first tab 41 and a second tab 42.

The first housing 21 includes a first center portion 211, a sidewall 212 extending from the first center portion 211, and a first edge 213 extending from the sidewall 212. The first center portion 211 and the side wall 212 enclose a receiving space 214 for receiving a weapon, the electrode assembly 11 is disposed in the receiving space 214, and the first pole of the electrode assembly 11 is electrically connected to the first case 21. Fig. 1 to 3 show an example in which the first center portion 211 has a circular shape, the side wall 212 extends in the thickness direction of the first center portion 211, and the first edge 213 extends in a direction perpendicular to the extending direction of the side wall 212, and in this case, the receiving space 214 is formed in a cylindrical shape. In addition, the shape of the first center portion 211 may be other shapes, for example, as shown in fig. 5 and 6, the first center portion 211 is a quasi-rectangular shape, and the receiving space 214 is a quasi-rectangular parallelepiped. The extending direction of the side walls 212 may be at an angle to the thickness direction of the first center portion 211, the extending direction of the first edges 213 may be at other angles to the extending direction of the side walls 212, and so on. In some embodiments, the first center portion 211, the sidewall 212, and the first edge 213 are integrally formed. The electrode assembly 11 in the embodiment of the present application may employ a wound electrode, a laminated electrode, or the like, but is not limited thereto. The shape of the receiving space 214 corresponds to the electrode assembly 11, for example, when a coiled electrode is used, the first center portion 211 may be circular to form a cylinder-like receiving space 214 to receive the coiled electrode; also, when a laminated electrode is used, the first center portion 211 may have a rectangular shape to form a rectangular parallelepiped-like receiving space 214 to receive the laminated electrode.

The second housing 22 includes a second center portion 221 and a second edge 222 extending from the second center portion 221, and the second edge 222 extends in the same direction as the first edge 213. The second case 22 has a shape corresponding to the first case 21, covers the opening of the receiving space 214, and surrounds the first case 21 to form a closed receiving space 214 to receive the electrode assembly 11. The second case 22 is electrically connected to the second pole of the electrode assembly 11. In some embodiments, the second center portion 221 and the second edge 222 are integrally formed.

In some embodiments, the first case 21 and the second case 22 are made of alloy material, for example, the first case 21 and the second case 22 are made of stainless steel, which has high strength and sealing performance, and can better protect the electrode assembly 11 in the receiving space 214. The first case 21 and the second case 22 may be formed by press molding. Of course, the material of the first and

second housings

21 and 22 may be other alloy materials than stainless steel, such as nickel alloy, chromium alloy, and the like.

The insulating member 31 is higher than between the first edge 213 and the second edge 222, and the first housing 21 is connected to the second housing 22 through the insulating member 31. The insulating member 31 may be a material having a self-adhesive property, and the first edge 213 and the second edge 222 are adhered together by the insulating member 31, and are insulated from each other; the insulating member 31 may be a non-adhesive material, the insulating member 31 may be disposed between the first edge 213 and the second edge 222, and the first edge 213, the second edge 222, and the insulating member 31 may be fixed to each other by ultrasonic welding or the like.

The first edge 213 is provided with a first tab 41, and the first tab 41 is electrically connected to the first case 21 for leading out a first pole of the electrode assembly 11. In some embodiments, the first tab 41 is made of the same material as the first casing 21, and the first tab 41 is integrally formed with the first casing 21.

The second edge 222 is provided with a second tab 42, and the second tab 42 is electrically connected to the second case 22 for leading out a second pole of the electrode assembly 11. In some embodiments, the second pole ear 42 is made of the same material as the second housing 22, and the second pole ear 42 is integrally formed with the second housing 22.

The first casing 21 and the second casing 22 are respectively electrically connected with the first pole and the second pole of the electrode assembly 11, and the first tab 41 and the second tab 42 are respectively used for leading out the corresponding electrodes, so that the two poles of the electrode assembly are led to the same side. Can directly weld utmost point ear and circuit board 60 together when electric core subassembly is connected with circuit board 60, realize electric connection of electric core subassembly and circuit board 60, effectively reduced the risk that cell shell was welded or rosin joint. Materials such as nickel sheets and wires are not needed when the electric core assembly is connected with the circuit board 60, so that the cost can be saved, and the requirement on space is reduced.

In some embodiments, the insulating member 31 protrudes from at least one of the first edge 213 and the second edge 222 in a first direction, which is an extending direction of the first edge 213. In some embodiments, the first direction is perpendicular to the orientation of the opening of the receiving space 214. Fig. 1 to 3 illustrate a structure in which the insulating member 31 protrudes from the second edge 222 but does not protrude from the first edge 213, and in addition, the insulating member 31 may also protrude from the first edge 213 but does not protrude from the second edge 222; or the insulating member 31 protrudes from both the first edge 213 and the second edge 222, etc. By protruding the insulating member 31 from at least one of the first edge 213 and the second edge 222, the distance between the first edge 213 and the second edge 222 can be increased, the possibility of short circuit between the first edge 213 and the second edge 222 can be reduced, and the safety of the electrical core assembly can be improved. Preferably, the dimension of the insulation member 31 protruding from the first edge 213 or the second edge 222 in the first direction is 0.5mm to 1mm.

To further increase the safety of the core assembly, as shown in fig. 3, in some embodiments, the first edge 213 is provided with a first notch 215 at a position corresponding to the second pole ear 42, and the first notch 215 is used to increase the distance between the second pole ear 42 and the first edge 213 and reduce the possibility of short circuit between the first edge 213 and the second pole ear 42. Likewise, in other embodiments, as shown in fig. 6, a second notch 223 is formed at a position of the second edge 222 corresponding to the first tab 41.

In some embodiments, as shown in fig. 1 to 3, the extending directions of the first tab 41 and the second tab 42 are 180 °, and the angle formed between the extending directions of the first tab 41 and the second tab may be set according to practical application requirements, for example, as shown in fig. 4, the extending directions of the first tab 41 and the second tab 42 are 90 °. In other embodiments, as shown in fig. 5 and 6, when the first central portion 211 of the first casing 21 is rectangular-like, the first tab 41 and the second tab 42 may be located on the same side of the rectangle, and the first tab 41 and the second tab 42 may be located on different sides of the rectangle.

In some embodiments, the outer surfaces of the first and

second housings

21 and 22 are provided with an insulating layer (not shown), so that the electrical core assembly is connected to the circuit board 60 only through the first and

second tabs

41 and 42, thereby reducing the possibility of conducting the housings of the electrical core assembly with other components except the electrical core assembly.

It is understood that the battery cell may generate gas during use, and when the battery is out of control due to heat, a large amount of combustible gas may be generated, or even electrolyte may leak out, so that the pressure in the accommodating space 214 continuously rises, and explosion may be caused. Therefore, in some embodiments, the position of the first casing 21 and/or the second casing 22 corresponding to the accommodating space 214 is provided with a safety valve 51, and the safety valve 51 is configured to open when the pressure of the accommodating space 214 is greater than a preset pressure value, so as to discharge the fluid (including, but not limited to, gas and liquid, etc.) in the accommodating space 214. The safety valve 51 may be a rupture disk, a rupture membrane, a venting valve, or the like, and an opening is formed in the first casing 21 and/or the second casing 22, and the safety valve 51 is disposed at the opening; the safety valve 51 may also be a relatively weak area of the first casing 21 and/or the second casing 22, for example, by reducing the thickness, using different materials, etc., to make the portion weaker relative to other portions of the casing, so as to break the portion when the pressure in the accommodating space 214 exceeds a preset pressure value, thereby opening to discharge the liquid.

In some embodiments, as shown in fig. 7, a plurality of first tabs 41 and/or second tabs 42 are provided, and fig. 7 is a schematic view illustrating that two first tabs 41 are provided and two second tabs 42 are provided. The number of the first tabs 41 and/or the second tabs 42 is multiple, including one first tab 41 and multiple second tabs 42; or a plurality of first tabs 41 and one second tab 42 are arranged; or a plurality of first tabs 41 and a plurality of second tabs 42 may be provided.

In another aspect of the present embodiment, referring to fig. 8 and 9, the battery module includes a circuit board 60 and the electric core assembly as described in any one of the above embodiments, wherein the circuit board is electrically connected to the first tab 41 and the second tab 42 of the electric core assembly.

As shown in fig. 8 and 9, in some embodiments, the circuit board 60 is provided with a first through hole 61 corresponding to the first tab 41 and a second through hole 62 corresponding to the second tab 42, and the first tab 41 and the second tab 42 respectively pass through the first through hole 61 and the second through hole 62 to be electrically connected to the circuit board 60. When the core assembly is combined with the circuit board 60, the first tab 41 and the second tab 42 can be bent toward the circuit board 60, so that the first tab 41 and the second tab 42 can pass through the first through hole 61 and the second through hole 62 of the circuit board 60, and then the first tab 41 and the circuit board 60, and the second tab 42 and the circuit board 60 are respectively connected by soldering tin 71 and the like, thereby realizing mutual fixation and electrical connection between the circuit board 60 and the core assembly.

In some embodiments, the circuit board 60 is electrically connected to the first tab 41 through a first connecting member 81, and the circuit board 60 is electrically connected to the second tab 42 through a second connecting member 82.

As shown in fig. 10 and 11, as an example of the first connecting member 81 and the second connecting member 82, conductive bolts are used, the first tab 41 is provided with a first mounting hole 43, the second tab 42 is provided with a second mounting hole 44, the circuit board 60 is provided with a third mounting hole 63 and a fourth mounting hole 64, the first connecting member 81 passes through the first mounting hole 43 and the third mounting hole 63, the circuit board 60 and the first tab 41 are connected, and the second connecting member 82 passes through the second mounting hole 44 and the fourth mounting hole 64, so as to connect the circuit board 60 and the second tab 42.

The mounting holes may be through holes or screw holes, for example, as shown in fig. 10 and 11, the first mounting hole 43 and the second mounting hole 44 are screw holes, the third mounting hole 63 and the fourth mounting hole 64 are through holes, and the first connector 81 passes through the third mounting hole 63 and is screwed into the first mounting hole 43. Similarly, the second connector 82 extends through the fourth mounting hole 64 and is threadably engaged with the second mounting hole 44.

When all the mounting holes are through holes, the first connecting member 81 can be matched with the nut to fixedly connect the circuit board 60 and the second tab 42 after passing through the first mounting hole 43 and the third mounting hole 63. The same principle of the second connecting member 82 will not be described again. In addition, the first mounting hole 43 may be a through hole, the third mounting hole 63 may be a screw hole, and the first connector 81 may pass through the first mounting hole 43, be screwed with the third mounting hole 63, and the like.

It can be understood that, because the structure of utmost point ear is comparatively weak, connect the back through the connecting piece, probably lead to utmost point ear deformation, damage scheduling problem because intensity is not enough in the use, consequently, in some embodiments, through the intensity that sets up additional strengthening in order to improve utmost point ear in utmost point ear department, increase battery module's life. As shown in fig. 10 and 11, the reinforcing structure may be a multi-layer structure formed by bending the tab, and the multi-layer structure is connected to the first connecting member 81, so that the problem of damage to the tab due to insufficient strength can be effectively reduced. In other embodiments, the strength of the connection portion of the tab and the first connecting member 81 may be further improved by increasing the spacer, increasing the thickness of the mounting hole portion, performing a process treatment on the mounting hole portion, and the like.

In some embodiments, as shown in fig. 12, the first tab 41 and/or the second tab 42 of the electric core assembly are multiple, wherein at least one first tab 41 is electrically connected to the circuit board 60, and the other first tabs 41 are fixedly connected to the circuit board 60; at least one second tab 42 is electrically connected to the circuit board 60, and the other second tabs 42 are fixedly connected to the circuit board 60. Fig. 7 is a schematic diagram that two first tabs 41 and two second tabs 42 are provided for the core assembly, wherein the first tabs 41 are welded to the circuit board 60, and the second tabs 42 are connected to the circuit board 60 through a connector. By providing a plurality of tabs, the connection strength between the core assembly and the circuit board 60 can be enhanced in a manner that the tabs are fixed to the circuit board 60.

The connection method of the first tab 41 and the second tab 42 to the circuit board 60 is not limited to the above, and may be implemented as long as corresponding electrical connection or fixed connection is implemented, or the electrical connection may be implemented while the fixed connection is implemented. For example, when the electrical connection is required, the electrical connection may be achieved by forming through holes in the circuit board 60, and then welding the first tab 41 and the second tab 42 through the corresponding through holes; the first tab 41 and the second tab 42 can also be directly welded to the circuit board 60 to realize electrical connection; the first tab 41 and the circuit board 60 and the second tab 42 and the circuit board 60 may be electrically connected by correspondingly arranging connectors such as bolts. When the fixed connection is required, the first tab 41 or the second tab 42 and the circuit board 60 are welded and fixed by a welding member (for example, but not limited to, a tin block, a nickel block, etc.), or the fixed connection between the first tab 41 or the second tab 42 and the circuit board 60 may be realized by a connection method such as a bolt, a snap, etc.

The embodiment of the application further provides electronic equipment which comprises the battery module in any one of the embodiments. Therefore, the electronic equipment has the beneficial effects which can be generated by the battery module.

Referring to fig. 13 and 14, the electronic device includes a device main board 91 and a battery pack including any one of the embodiments, so that the electronic device has the beneficial effects of the battery pack. The equipment main board 91 is electrically connected with the first tab 41 and the second tab 42 of the cell assembly respectively. The cell assembly is directly connected with the equipment main board 91 of the electronic equipment, so that the cell assembly directly supplies power to the electronic equipment.

In some embodiments, as shown in fig. 13 and 14, a plurality of first tabs 41 and second tabs 42 are provided, wherein at least one first tab 41 is electrically connected to the equipment main board 91, at least one second tab 42 is electrically connected to the equipment main board 91, and the rest first tabs 41 and second tabs 42 are fixedly connected to the equipment main board 91. The number of the first tabs 41 and the second tabs 42 is multiple, and the first tabs 41 are one, and the second tabs 42 are multiple; or a plurality of first tabs 41 and one second tab 42 are arranged; or a plurality of first tabs 41 and a plurality of second tabs 42 are provided.

Fig. 13 and 14 show an example in which a plurality of first tabs 41 are provided and one second tab 42 is provided.

Fig. 13 is a schematic view of the accommodating space 214 being a cylinder-like body, in fig. 13, three first tabs 41 are provided, one of the first tabs 41 is electrically connected to the equipment main board 91 through the third connecting member 93, the second tab 42 is electrically connected to the equipment main board 91 through the fourth connecting member 94, and the other two first tabs 41 are welded to the equipment main board 91 through the welding member 92, so that the battery assembly is fixed to the equipment main board 91.

Fig. 14 is a schematic view of the accommodating space 214 being a rectangular parallelepiped, in fig. 14, four first tabs 41 are provided, which are respectively located on four sides of the rectangle, and one second tab 42 is provided. The first tab 41 located on the same side of the rectangle as the second tab 42 is electrically connected to the equipment motherboard 91, and the other three first tabs 41 are welded to the equipment motherboard 91 through the welding members 92, so that the tab assembly is fixed to the equipment motherboard 91.

The connection method of the first tab 41 and the second tab 42 to the device main board 91 is not limited to the above, and may be implemented as long as corresponding electrical connection or fixed connection is implemented, or the electrical connection may be implemented while the fixed connection is implemented. For example, when the electrical connection is required, the electrical connection may be achieved by forming through holes in the device main board 91, and then welding the first tab 41 and the second tab 42 through the corresponding through holes; the first tab 41 and the second tab 42 can also be electrically connected with the equipment main board 91 by directly welding; the first tab 41 and the equipment main board 91 and the second tab 42 and the equipment main board 91 can be electrically connected by correspondingly arranging connecting pieces such as bolts and the like. When the fixed connection is required, as shown in fig. 13 or 12, the first tab 41 or the second tab 42 may be welded and fixed to the equipment main board 91 by a welding member 92 (for example, but not limited to, a tin block, a nickel block, or the like), or the fixed connection between the first tab 41 or the second tab 42 and the equipment main board 91 may be realized by a connection method such as a bolt, a snap, or the like.

The electronic device of the embodiments of the present application may be implemented in various forms. For example, the electronic devices may include mobile electronic devices such as mobile phones, tablet computers, notebook computers, palm top computers, personal Digital Assistants (PDAs), portable Media Players (PMPs), navigation devices, wearable devices, smart bands, pedometers, and fixed electronic devices such as Digital TVs, desktop computers, and the like.

Claims

1. An electric core assembly, comprising:

an electrode assembly;

the first shell comprises a first central part, a side wall and a first edge, wherein the side wall extends out from the first central part, the first edge extends out from the side wall, the first edge extends along the direction perpendicular to the extension direction of the side wall, and the first central part and the side wall enclose an accommodating space with an opening; the electrode assembly is arranged in the accommodating space, and the first shell is electrically connected with a first pole of the electrode assembly;

the second shell comprises a second central part and a second edge extending out from the second central part, and the second shell covers the opening of the accommodating space; the second shell is electrically connected with a second pole of the electrode assembly;

the insulating piece is arranged between the first edge and the second edge, and the first shell is connected with the second shell through the insulating piece;

the first lug is arranged on the first edge and is electrically connected with the first shell;

the second utmost point ear is located the second edge, the second utmost point ear with second casing electric connection, the second utmost point ear with first utmost point ear is located same one side of electric core subassembly.

2. The electrical core assembly according to claim 1, wherein said insulator protrudes in a first direction from at least one of said first edge and said second edge, said first direction being a direction of extension of said first edge.

3. The electric core assembly according to claim 1, wherein said first and second shells are made of an alloy material.

4. The die assembly of claim 3, wherein the first housing is integrally formed with the first tab and the second housing is integrally formed with the second tab.

5. The electric core assembly according to claim 1, characterized in that the first edge is provided with a first notch at a position corresponding to the second ear.

6. The electric core assembly according to claim 1, wherein the outer surfaces of said first and second shells are provided with an insulating layer.

7. The electric core assembly according to claim 1, wherein the first and/or second housing is provided with a safety valve; the safety valve is used for opening when the pressure of the accommodating space is larger than a preset pressure value so as to discharge the fluid in the accommodating space.

8. The electric core assembly according to claim 1, wherein a plurality of the first and/or second pole ears are provided.

9. A battery module comprising a circuit board and the electric core assembly as claimed in any one of claims 1 to 8, wherein the circuit board is electrically connected to the first and second tabs of the electric core assembly respectively.

10. The battery module according to claim 9, wherein the circuit board is provided with a first through hole corresponding to the first tab and a second through hole corresponding to the second tab, and the first tab and the second tab respectively pass through the first through hole and the second through hole and are electrically connected to the circuit board.

11. The battery module as set forth in claim 9, wherein the circuit board is electrically connected to the first tab through a first connecting member, and the circuit board is electrically connected to the second tab through a second connecting member.

12. The battery module as set forth in claim 11, wherein the first tab is provided with a first mounting hole, the second tab is provided with a second mounting hole, and the circuit board is provided with a third mounting hole and a fourth mounting hole;

the first connecting piece penetrates through the first mounting hole and the third mounting hole to connect the circuit board and the first lug;

the second connecting piece penetrates through the second mounting hole and the fourth mounting hole to connect the circuit board and the second lug.

13. An electronic device characterized by comprising the battery module according to any one of claims 9 to 12.

14. An electronic device, comprising a device main board and the cell assembly according to any one of claims 1 to 8, wherein the device main board is electrically connected to the first and second tabs of the cell assembly respectively.