CN214254554U

CN214254554U - Battery and electronic device

Info

Publication number: CN214254554U
Application number: CN202120367339.0U
Authority: CN
Inventors: 欧阳兆华; 刘灼鹏; 唐威; 钟毅斌
Original assignee: Dongguan Nvt Technology Co Ltd
Current assignee: Dongguan Nvt Technology Co Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-09-21
Anticipated expiration: 2031-02-09

Abstract

A battery comprises a battery core, an arc-shaped hollow support and a circuit board assembly. The battery cell comprises an arc-shaped top sealing edge and a tab extending out of the top sealing edge. The hollow bracket is at least partially positioned at the top seal edge. The circuit board assembly is at least partially positioned in the hollow support, and the lug is electrically connected with the circuit board assembly. The application also provides an electronic device with the battery. The battery is beneficial to improving the utilization rate of the content space of the electronic device.

Description

Battery and electronic device

Technical Field

The present disclosure relates to battery technologies, and particularly to a battery and an electronic device having the same.

Background

Batteries are widely used in electronic products such as electronic mobile devices and electric tools, and the requirements of people on the safety performance of the batteries are higher and higher. For some portable electronic products, especially wearable devices, the traditional rectangular and cylindrical batteries have been unable to meet the requirements due to the limitation of the internal space.

SUMMERY OF THE UTILITY MODEL

It is necessary to provide a curved battery to improve the utilization of the content space of the electronic device.

In addition, it is also necessary to provide an electronic device having the above battery.

The application provides a battery, including electric core, be curved cavity support and circuit board assembly. The battery cell comprises an arc-shaped top seal edge and a tab extending from the top seal edge. The hollow bracket is at least partially positioned at the top seal edge. The circuit board assembly is at least partially positioned in the hollow support, and the pole lugs are electrically connected with the circuit board assembly.

As a possible solution to the present application, the curvature of the hollow support coincides with the curvature of the top sealing edge.

As a possible solution of the present application, the hollow bracket includes an accommodating cavity, a cross section of the accommodating cavity along a direction of a plane where the top seal edge is located is contoured with the top seal edge, and at least a portion of the circuit board assembly is located in the accommodating cavity.

As a possible scheme of this application, the inner wall of acceping the chamber is equipped with the bellying, and the bellying supports and holds circuit board assembly in order to fix circuit board assembly.

As one possible solution of the present application, the circuit board assembly includes a flexible circuit board and a reinforcing member, the tab is connected to a first surface of the flexible circuit board, and the reinforcing member is disposed on a second surface of the flexible circuit board opposite to the first surface. The reinforcing piece comprises a plurality of spaced reinforcing pieces, and the reinforcing pieces are arranged at least on the position, corresponding to the lug connection flexible circuit board, of the second surface.

As a possible solution to the present application, the curvature of at least part of the circuit board assembly located within the hollow carrier corresponds to the curvature of the top sealing edge.

As a possible solution to the present application, the circuit board assembly comprises a main surface for arranging the electronic components, the main surface of at least part of the circuit board assembly located inside the hollow rack being arranged facing away from or towards the top edge seal.

As a possible solution of the present application, the circuit board assembly comprises a main surface for arranging the electronic components, and at least part of the main surface of the circuit board assembly located within the hollow carrier is arranged perpendicular to the top sealing edge.

As a possible scheme of the application, the pole lugs are in a bent shape to be connected with the circuit board assembly, and the hollow support is provided with a space avoiding area corresponding to the joint of the pole lugs and the circuit board assembly.

The present application also provides an electronic device comprising a battery as described above.

The battery of this application passes through circuit board assembly and partly lies in the cavity support at least for be the curved cavity support fixed circuit board assembly and lie in the part of cavity support, and then make the shape of the part that circuit board assembly lies in the cavity support maintain, be favorable to the uniformity of battery overall structure form, simultaneously, also be favorable to the steadiness that circuit board assembly and electric core electricity are connected, thereby be favorable to promoting battery overall structure's reliability. Because the consistency of the overall structure form of the battery is favorable for fully utilizing the space of the accommodating cavity of the battery device. Meanwhile, the improvement of the stability of the electric connection between the circuit board assembly and the battery core is beneficial to improving the service life and the use experience of the electronic device.

Drawings

Fig. 1 is a schematic structural diagram of a battery according to an embodiment of the present application.

Fig. 2 is an exploded view of a battery according to an embodiment of the present application.

Fig. 3 is another angle view of fig. 2.

Fig. 4 is a schematic structural diagram of a hollow stent according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a battery according to another embodiment of the present application.

Fig. 6 is an exploded view of a battery according to another embodiment of the present application.

Fig. 7 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a battery according to yet another embodiment of the present application.

Fig. 9 is an exploded view of a battery according to yet another embodiment of the present application.

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Description of the main elements

Electronic device	200
		Battery with a battery cell	100
Battery cell	10
		Hollow support	30
Circuit board assembly	50
		Top edge banding	11
Tab for fixing a terminal	13
		First surface	151
Second surface	152
		First side surface	153
Second side surface	154
		First side	15a
Second side	15b
		Third side	15c
Fourth side	15d
		Containing part	110
Containing cavity	31
		Raised part	310
Main surface	501
		Electrical connection region	501a
Flexible circuit board	51
		Reinforcement piece	53
First surface	511
		Second surface	513
Reinforcement piece	531
		Protective layer	60
External connection part	515

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

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

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

Referring to fig. 1 and 2, an embodiment of the present disclosure provides a battery 100, which includes a battery cell 10, a hollow support 30, and a circuit board assembly 50.

The battery cell 10 includes an arc-shaped top sealing edge 11 and a tab 13 extending from the top sealing edge 11. The hollow stent 30 is curved and the hollow stent 30 is at least partially positioned at the top seal 11. The circuit board assembly 50 is at least partially located within the hollow support 30, and the circuit board assembly 50 is electrically connected to the tabs 13. The battery 100 of this application is located cavity support 30 through circuit board assembly 50 part at least for be the curved cavity support 30 fixed circuit board assembly 50 part that is located cavity support 30, and then make the shape of the part that circuit board assembly 50 is located cavity support 30 maintain, be favorable to the uniformity of battery 100 overall structure form, simultaneously, also be favorable to the steadiness that circuit board assembly 50 is connected with electric core 10 electricity, thereby be favorable to promoting the reliability of battery 100 overall structure.

In this embodiment, the battery cell 10 further includes a battery cell body 15 in an arc shape. The top seal 11 extends from one surface of the electrical core body 15. The curvature of the top sealing edge 11 may be consistent with the curvature of the cell body 15, so as to facilitate consistency of the overall structural shape of the battery 100.

Specifically, referring to fig. 2 and fig. 3, the battery cell body 15 may include a first surface 151 and a second surface 152 disposed opposite to each other, and a first side surface 153 and a second side surface 154 disposed opposite to each other. The first side 153 connects the first surface 151 and the second surface 152, and intersects the first surface 151 at the first edge 15a and the second surface 152 at the second edge 15 b. The second side 154 connects the first surface 151 and the second surface 152, and intersects the first surface 151 at the third side 15c and the second surface 152 at the fourth side 15 d.

The first surface 151 is an arc surface recessed toward the second surface 152, wherein the first side 15a and the third side 15c are respectively an arc line recessed toward the second surface 152.

The second surface 152 is an arc surface protruding in a direction away from the first surface 151, wherein the second side 15b and the fourth side 15d are respectively an arc line protruding in a direction away from the first surface 151.

The top seal 11 may extend from the first side 153 in a direction away from the second side 154 and form a receiving portion 110 with the first side 153.

Referring to fig. 1 and 2, the hollow frame 30 is at least partially located in the receiving portion 110. In the present embodiment, the hollow bracket 30 is entirely located in the accommodating portion 110, so as to facilitate the consistency of the overall structural configuration of the battery 100 and reduce the occupied space of the battery 100. Preferably, the curvature of the hollow support 30 may be matched with the curvature of the top sealing edge 11, so as to further facilitate the consistency of the overall structural configuration of the battery 100 and the stability of the subsequent connection with the tab.

In some embodiments, the hollow support 30 may be adhered to the first side 153 or the top sealing edge 11 by an adhesive layer (not shown), so as to fix the hollow support 30 to the battery cell 10.

Referring to fig. 1 and 2, the hollow frame 30 includes a receiving cavity 31. In the present embodiment, the cross section of the receiving cavity 31 along the plane of the top seal edge 11 is substantially similar to the top seal edge 11, and at least a portion (i.e. the first portion) of the circuit board assembly 50 is received in the receiving cavity 31, so as to facilitate the shape of the portion of the circuit board assembly 50 received in the receiving cavity 31 to be consistent with the top seal edge 11, and further facilitate the stability of the electrical connection between the portion of the circuit board assembly 50 received in the receiving cavity 31 and the tab 13. Preferably, the curvature of the portion of the circuit board assembly 50 received in the receiving cavity 31, i.e., the first portion of the circuit board assembly 50, may be identical to the curvature of the top edge 11.

In some embodiments, referring to fig. 4, the inner wall of the receiving cavity 31 may be provided with a protrusion 310 for abutting against the circuit board assembly 50 received in the receiving cavity 31 to fix the circuit board assembly 50. As shown in fig. 4, the protrusions 310 may be provided in plurality and spaced apart from each other. In some embodiments, the plurality of protrusions 310 may be distributed on two oppositely disposed inner walls of the receiving cavity 31.

The circuit board assembly 50 includes a major surface 501 for mounting electronic components.

In some embodiments, referring to fig. 5 and 6, the portion of major surface 501 within pocket 31 is disposed away from or toward top edge seal 11. As shown in fig. 5 and 6, the main surface 501 may be disposed perpendicular to the first side 153. Further, the main surface 501 may also be disposed parallel to the top sealing edge 11, that is, the main surface 501 may be a cambered surface.

In some embodiments, referring to fig. 1 and 2, the portion of the main surface 501 located in the receiving cavity 31 may be disposed perpendicular to the top sealing edge 11. As shown in fig. 1 and 2, the major surface 501 may be disposed parallel to the first side 153.

The main surface 501 includes an electrical connection region 501a, and the hollow bracket 30 is provided with a keep-out region 301 corresponding to the electrical connection region 501a to expose the electrical connection region 501a for electrical connection with the tab 13.

One end of the tab 13 is electrically connected to the cell body 15, and the other end extends out of the top sealing edge and is bent to connect the electrical connection region 501 a. As shown in fig. 1 and 2, the tab 13 is bent 90 degrees to be connected to the electrical connection region 501 a. As shown in fig. 5 and 6, the tab 13 is bent 180 degrees to be connected to the electrical connection region 501 a. In some embodiments, the tab 13 may also be directly connected to the electrical connection region 501a of the circuit board assembly 50 facing the tab 13 without bending. The tab 13 and the electrical connection region 501a may be directly connected, or may be indirectly electrically connected to the electrical connection region 501a through an adaptor such as a nickel plate.

In some embodiments, referring to fig. 7, the circuit board assembly 50 may include a flexible circuit board 51 and a stiffener 53. The flexible circuit board 51 is at least partially received in the receiving cavity 31.

The flexible circuit board 51 includes a first surface 511 (i.e., a main surface) and a second surface 513 that are oppositely disposed. The tab 13 is connected to the first surface 511 of the flexible circuit board 51, and the reinforcing member 53 is disposed on the second surface 513 and corresponds to the tab 13, so as to increase the strength of the connection portion (i.e., the electrical connection region 501a) between the flexible circuit board 51 and the tab 13, thereby facilitating the welding between the tab 13 and the flexible circuit board 51.

In the present embodiment, the tabs 13 may be two and spaced apart from each other.

The stiffener 53 may include a plurality of spaced stiffener 531. Wherein, at least the second surface 513 of the flexible circuit board 51 is provided with a reinforcing sheet 531 at the position corresponding to the tab 13.

Specifically, there may be three reinforcing plates 531, two reinforcing plates 531 are disposed corresponding to the two tabs 13, and the remaining reinforcing plate 531 is disposed on the second surface 513 in the area between the two tabs 13. In other embodiments, the number and the arrangement position of the reinforcing sheets 531 can be further adjusted as required.

The flexible circuit board 51 can be directly press-molded into a desired shape, such as an arc shape, thereby reducing costs.

In some embodiments, referring to fig. 8 and 9, the battery 100 may further include a protective layer 60. The protective layer 60 covers the top seal edge 11 and the hollow bracket 30, and the circuit board assembly 50 is partially exposed from the protective layer 60. Specifically, the flexible circuit board 51 may include an external connection portion 515 for electrically connecting an external element. The external connection portion 515 is exposed from the protective layer 60. The external connection portion may be, but is not limited to, an electrical connection terminal, an electrical connector, and the like.

The present application is applicable to all kinds of primary batteries, secondary batteries, fuel cells, or solar cells. In particular, the battery may be, but is not limited to, a lithium secondary battery, including, but not limited to, a lithium metal secondary battery, a lithium ion secondary battery, a lithium polymer secondary battery, and a lithium ion polymer secondary battery.

Referring to fig. 10, the present application further provides an electronic device 200 using the battery 100. The electronic device 200 may be, but is not limited to, a consumer electronic product (e.g., a mobile phone), a power tool, an energy storage device, a power device, and the like. The electronic device 200 has a receiving cavity (not shown) therein, and the battery 100 is received in the receiving cavity. Due to the consistency of the overall structure of the battery 100, it is beneficial to fully utilize the space of the accommodating cavity of the electronic device 200. Meanwhile, the improvement of the stability of the electrical connection between the circuit board assembly 50 and the battery cell 10 is beneficial to the improvement of the service life and the use experience of the electronic device 200.

Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims

1. A battery, comprising:

the battery comprises a battery cell and a battery cover, wherein the battery cell comprises an arc-shaped top seal edge and a lug extending out of the top seal edge; characterized in that the battery further comprises:

an arcuate hollow support at least partially positioned at the top seal edge; and

the circuit board assembly is at least partially positioned in the hollow support, and the lug is electrically connected with the circuit board assembly.

2. The battery of claim 1, wherein the curvature of the hollow brace conforms to the curvature of the top seal.

3. The battery of claim 1, wherein the hollow bracket includes a receiving cavity, a cross section of the receiving cavity along a plane of the top sealing edge is substantially similar to the top sealing edge, and the circuit board assembly is at least partially located in the receiving cavity.

4. The battery of claim 3, wherein the inner wall of the receiving cavity is provided with a protrusion, and the protrusion abuts against the circuit board assembly to fix the circuit board assembly.

5. The battery of claim 1,

the circuit board assembly comprises a flexible circuit board and a reinforcing piece, the lug is connected to a first surface of the flexible circuit board, and the reinforcing piece is arranged on a second surface, opposite to the first surface, of the flexible circuit board;

the reinforcing piece comprises a plurality of spaced reinforcing pieces, and the reinforcing pieces are arranged at positions, corresponding to the positions where the tabs are connected with the flexible circuit board, of the second surface at least.

6. The battery of claim 1, wherein at least a portion of the circuit board assembly located within the hollow cradle has a curvature that conforms to a curvature of the top seal.

7. The battery of claim 1, wherein the circuit board assembly includes a major surface for positioning an electronic component, at least a portion of the major surface of the circuit board assembly positioned within the hollow cradle being positioned away from or toward the top edge seal.

8. The battery of claim 1, wherein the circuit board assembly includes a major surface for mounting electronic components, at least a portion of the major surface of the circuit board assembly within the hollow cradle being disposed perpendicular to the top seal edge.

9. The battery of claim 1, wherein the tab is bent to be coupled to the circuit board assembly, and the hollow bracket is provided with a space-avoiding region corresponding to a junction of the tab and the circuit board assembly.

10. An electronic device, characterized in that the electronic device comprises a battery according to any one of claims 1 to 9.