CN218783070U

CN218783070U - Lithium battery with excellent shielding performance

Info

Publication number: CN218783070U
Application number: CN202223017651.0U
Authority: CN
Inventors: 王海明; 罗皓
Original assignee: Brich Electronic Dongguan Co ltd
Current assignee: Brich Electronic Dongguan Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-03-31
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a lithium battery with excellent shielding performance, which comprises an electric core, conductive cloth and a FPC (flexible printed circuit); the battery cell is provided with a top sealing structure, the front end surface of the top sealing structure extends forwards to form two pole lugs, and the battery cell is pasted with a packaging adhesive tape; the conductive cloth is coated on the surfaces of the battery core and the packaging adhesive tape, the conductive cloth comprises a conductive area and a non-conductive area, the adjacent conductive areas and the non-conductive areas are integrally connected, at least one conductive area is arranged, and the surface of each conductive area is coated with conductive adhesive; the FPC comprises a first connecting portion and a second connecting portion which are sequentially connected in an integrated mode, the first connecting portion is connected with a pole lug, and the second connecting portion extends out of the battery core. Through being provided with conductive area and non-conductive area on conductive cloth, adjacent conductive area and non-conductive area integrated into one piece are connected, and the conductive area is at least one, and the surface facing of conductive area is covered with the conducting resin, and the producer can adjust the position and the size of conducting resin according to the actual demand of equipment to make the shielding performance of conductive cloth reach the best.

Description

Lithium battery with excellent shielding performance

Technical Field

The utility model relates to a lithium battery field technique especially indicates a lithium cell that shielding performance is excellent.

Background

A lithium battery is a type of battery using a non-aqueous electrolyte solution, with lithium metal or a lithium alloy as a positive/negative electrode material. Because the chemical characteristics of lithium metal are very active, the lithium metal has very high requirements on the environment in processing, storage and use. However, with the development of science and technology, lithium batteries have become the mainstream. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable.

Current lithium cell all has the internal line of electric core, can produce signal interference to equipment when using, in order to disturb shielding signal, most producers all adopt conductive cloth to encapsulate electric core. However, the contact surfaces of the existing conductive cloth and the battery core are conductive areas, and signal shielding cannot be performed according to different requirements of different devices, so that the shielding performance of the conductive cloth cannot reach the best. Therefore, there is a need for improvements in existing lithium batteries.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a lithium battery with excellent shielding performance, which can effectively solve the problem that the shielding performance of the conductive cloth cannot reach the best due to the fact that the existing lithium battery cannot shield signals for different devices.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lithium battery with excellent shielding performance comprises a battery core, conductive cloth and an FPC (flexible printed circuit); the battery cell is provided with a top sealing structure, the front end surface of the top sealing structure extends forwards to form two pole lugs, and the battery cell is pasted with a packaging adhesive tape; the conductive cloth is coated on the surfaces of the battery core and the packaging adhesive tape, the conductive cloth comprises a conductive area and a non-conductive area, the adjacent conductive areas and the non-conductive areas are integrally connected, at least one conductive area is arranged, and the surface of each conductive area is coated with conductive adhesive; the FPC comprises a first connecting portion and a second connecting portion which are sequentially connected in an integrated mode, the first connecting portion is connected with a lug, and the second connecting portion extends out of the battery core.

As a preferred scheme, a slot is concavely arranged on the upper surface of the capping structure, a battery protection board is embedded in the slot, and the first connecting part is located in the slot and electrically connected with the battery protection board.

As a preferred scheme, the battery further comprises a double-sided adhesive tape, the double-sided adhesive tape comprises a first section, a second section and a third section, the first section is attached to the lower surface of the battery cell, the second section is attached to the front end surface of the tab, and the third section wraps the first connecting part and is attached to the bottom surface of the slot, so that the FPC is firmly and reliably connected with the electrode.

Preferably, a reinforcing member is arranged on the double-sided adhesive tape to further reinforce the fixing function of the double-sided adhesive tape.

Preferably, the reinforcing member is made of PI.

As a preferable scheme, the first connecting portions are arranged transversely, the second connecting portions are U-shaped, and the ends of the second connecting portions are provided with connector interfaces.

As a preferred scheme, the two pole lugs are both U-shaped.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

through being provided with conductive area and non-conductive area on conductive cloth, adjacent conductive area and non-conductive area integrated into one piece are connected, and the conductive area is at least one, and the surface facing of conductive area is covered with the conducting resin, and the producer can adjust the position and the size of conducting resin according to the actual demand of equipment to make the shielding performance of conductive cloth reach the best.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is an assembled perspective view of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view of a preferred embodiment of the present invention;

fig. 4 is a plan view of the conductive cloth according to the preferred embodiment of the present invention.

The attached drawings indicate the following:

10. electric core 101 and slot position

11. Top seal structure 12 and pole lug

20. Conductive cloth 201 and conductive adhesive

21. Conductive region 22, non-conductive region

30. FPC 31, first connecting part

32. Second connecting part 33 and connector interface

40. Sealing tape 50 and battery protection board

60. Double-sided adhesive tape 61, first stage

62. Second section 63, third section

70. A reinforcement.

Detailed Description

Fig. 1 to 4 show a specific structure of a preferred embodiment of the invention, which includes a battery cell 10, a conductive cloth 20 and an FPC30.

The battery cell 10 has a top sealing structure 11, two electrode lugs 12 extend forwards from the front end face of the top sealing structure 11, and the battery cell 10 is covered with a packaging adhesive tape 40; in this embodiment, the upper surface of the capping structure 11 is concavely provided with a slot 101, and the battery protection board 50 is embedded in the slot 101; in addition, the two tabs 12 are both U-shaped.

The conductive cloth 20 is coated on the surfaces of the battery cell 10 and the packaging tape 40, the conductive cloth 20 includes a conductive area 21 and a non-conductive area 22, the adjacent conductive areas 21 and non-conductive areas 22 are integrally connected, at least one conductive area 21 is provided, and the surface of the conductive area 21 is coated with a conductive adhesive 201; the manufacturer can adjust the position and size of the conductive area 21 according to the actual requirement of the device, and the number of the conductive areas 21 can be one, two, three or even four, which is not listed here, so as to optimize the shielding performance of the conductive cloth 20.

The FPC30 includes a first connection portion 31 and a second connection portion 32 integrally connected in sequence, the first connection portion 31 is connected to the tab 12, and the second connection portion 32 extends out of the battery cell 10; in the present embodiment, the first connecting portion 31 is located in the slot 101 and electrically connected to the battery protection board 50; the first connecting portions 31 are arranged transversely, the second connecting portions 32 are U-shaped, and the ends of the second connecting portions 32 are provided with connector ports 33.

And further comprising a double-sided adhesive tape 60, wherein the double-sided adhesive tape 60 comprises a first section 61, a second section 62 and a third section 63, the first section 61 is attached to the lower surface of the electric core 10, the second section 62 is attached to the front end surface of the tab 12, and the third section 63 wraps the first connecting part 31 and is attached to the bottom surface of the slot 101, so that the FPC30 is firmly and reliably connected with the electrodes; the double-sided adhesive tape 60 is provided with a reinforcing member 70 for further reinforcing the fixing function of the double-sided adhesive tape 60, and the reinforcing member 70 is made of PI material.

The utility model discloses a design focus lies in: through being provided with conductive area and non-conductive area on conductive cloth, adjacent conductive area and non-conductive area integrated into one piece are connected, and the conductive area is at least one, and the surface facing of conductive area is covered with the conducting resin, and the producer can adjust the position and the size of conducting resin according to the actual demand of equipment to make the shielding performance of conductive cloth reach the best.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. A lithium battery with excellent shielding performance is characterized in that: the battery comprises a battery cell, conductive cloth and an FPC; the battery cell is provided with a top sealing structure, two pole lugs extend forwards from the front end face of the top sealing structure, and a packaging adhesive tape is pasted on the battery cell; the conductive cloth is coated on the surfaces of the battery core and the packaging adhesive tape, the conductive cloth comprises a conductive area and a non-conductive area, the adjacent conductive areas and the non-conductive areas are integrally connected, at least one conductive area is arranged, and the surface of each conductive area is coated with conductive adhesive; the FPC comprises a first connecting portion and a second connecting portion which are sequentially connected in an integrated mode, the first connecting portion is connected with a pole lug, and the second connecting portion extends out of the battery core.

2. The lithium battery excellent in shielding property according to claim 1, characterized in that: the upper surface of top seal structure is equipped with the trench in a concave way, and this trench inlays and is equipped with the battery protection shield, and this first connecting portion are arranged in the trench and with battery protection shield electric connection.

3. The lithium battery excellent in shielding property according to claim 2, characterized in that: the battery further comprises a double-sided adhesive tape, wherein the double-sided adhesive tape comprises a first section, a second section and a third section, the first section is attached to the lower surface of the battery cell, the second section is attached to the front end surface of the tab, and the third section wraps the first connecting part and is attached to the bottom surface of the slot.

4. A lithium battery excellent in shielding property according to claim 3, characterized in that: and a reinforcing piece is arranged on the double-faced adhesive tape.

5. The lithium battery excellent in shielding property according to claim 4, characterized in that: the reinforcing piece is made of PI materials.

6. The lithium battery excellent in shielding property according to claim 1, characterized in that: the first connecting parts are transversely arranged, the second connecting parts are U-shaped, and the tail ends of the second connecting parts are provided with connector interfaces.

7. The lithium battery excellent in shielding property according to claim 1, characterized in that: the two tabs are both U-shaped.