Protective main board for battery cell, electronic terminal and method for assembling battery cell of electronic terminal

Patent metadata

Field	Value
Publication number	US-10587013-B2
Application number	US-201615358150-A
Country	US
Kind code	B2
Filing date	Nov 22, 2016
Priority date	Dec 15, 2015
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

Disclosed are a protective main board for a battery cell, an electronic terminal and a method for assembling a battery cell of an electronic terminal. The protective main board for a battery cell includes a main board body and a conducting component. The main board body includes a main board circuit and a protection circuit configured to protect the battery cell, and the protection circuit is connected with the main board circuit. The conducting component is arranged on the main board body, and includes a first conducting member and a second conducting member, and the battery cell is electrically connected with the protection circuit through the first conducting member and the second conducting member respectively.

First claim

What is claimed is:

1. A protective main board for a battery cell of an electronic terminal, the protective main board comprising:
a main board body comprising a main board circuit and a protection circuit configured to protect the battery cell, the main board circuit being a main circuit forming the electronic terminal, and the protection circuit comprising at least an overcharge protection circuit, an over-discharge protection circuit, a charging and discharging temperature protection circuit and a short-circuit protection circuit; and
a conducting component arranged on the main board body and comprising a first conducting member and a second conducting member, the battery cell being electrically connected with the protection circuit through the first conducting member and the second conducting member;
wherein the protective main board is configured for detachably connecting with the battery cell.

2. The protective main board for a battery cell according to claim 1 , further comprising a first welding layer arranged on the protection circuit, wherein the first conducting member and the second conducting member are electrically connected with the protection circuit through the first welding layer.

3. The protective main board for a battery cell according to claim 1 , further comprising a first threaded structure arranged on an outer surface of the protection circuit, wherein the first conducting member and the second conducting member are electrically connected with the protection circuit through the first threaded structure.

4. The protective main board for a battery cell according to claim 3 , wherein the first threaded structure comprises: at least two first screws and at least two first gaskets, and the first screws are positioned on upper surfaces of the first gaskets.

5. The protective main board for a battery cell according to claim 1 , wherein the first conducting member is a steel sheet, and the second conducting member is a steel sheet.

6. An electronic terminal, comprising:
a protective main board for a battery cell of the electronic terminal, the protective main board comprising:
a main board body comprising a main board circuit and a protection circuit, the main board circuit being a main circuit forming the electronic terminal, and the protection circuit comprising at least an overcharge protection circuit, an over-discharge protection circuit, a charging and discharging temperature protection circuit and a short-circuit protection circuit; and
a conducting component arranged on the main board body, wherein the conducting component comprises a first conducting member and a second conducting member;
the battery cell electrically connected with the protection circuit through the first conducting member and the second conducting member, wherein the battery cell has a first tab electrically connected with the first conducting member and a second tab electrically connected with the second conducting member, and wherein the first tab and the second tab are arranged on a same side of the battery cell respectively;
wherein the battery cell is detachably connected with the protective main board.

7. The electronic terminal according to claim 6 , wherein the protection circuit comprises a second welding layer, and wherein the first tab is electrically connected with the first conducting member through the second welding layer, and the second tab is electrically connected with the second conducting member through the second welding layer.

8. The electronic terminal according to claim 6 , wherein the protection circuit comprises a second threaded structure, and wherein the first tab is electrically connected with the first conducting member through the second threaded structure, and the second tab is electrically connected with the second conducting member through the second threaded structure.

9. The electronic terminal according to claim 8 , wherein the second threaded structure comprises:
at least two second gaskets; and
at least two second screws positioned on upper surfaces of the second gaskets.

10. The electronic terminal according to claim 6 , further comprising:
a conductive connecting layer arranged above the first conducting member and the second conducting member, wherein the conductive connecting layer comprises a conductive adhesive tape;
wherein the battery cell is electrically connected with the first conducting member and the second conducting member through the conductive connecting layer.

11. The electronic terminal according to claim 6 , wherein the protection circuit comprises a first welding layer, and wherein the first conducting member and the second conducting member are electrically connected with the protection circuit through the first welding layer.

12. The electronic terminal according to claim 11 , wherein the protection circuit comprises a second welding layer, and wherein the first tab is electrically connected with the first conducting member through the second welding layer, and the second tab is electrically connected with the second conducting member through the second welding layer.

13. The electronic terminal according to claim 11 , wherein the protection circuit comprises a second threaded structure, and wherein the first tab is electrically connected with the first conducting member through the second threaded structure, and the second tab is electrically connected with the second conducting member through the second threaded structure.

14. The electronic terminal according to claim 13 , wherein the second threaded structure comprises:
at least two second gaskets; and
at least two second screws positioned on upper surfaces of the second gaskets.

15. The electronic terminal according to claim 11 , further comprising:
a conductive connecting layer arranged above the first conducting member and the second conducting member and comprising a conductive adhesive tape;
wherein the battery cell is electrically connected with the first conducting member and the second conducting member through the conductive connecting layer.

16. The electronic terminal according to claim 6 , wherein the protective main board comprises a first threaded structure arranged on an outer surface of the protection circuit, and wherein the first conducting member and the second conducting member are electrically connected with the protection circuit through the first threaded structure.

17. A method for assembling a battery cell of an electronic terminal, the method comprising:
integrating a protection circuit configured to protect the battery cell to a main board body comprising a main board circuit, the main board circuit being a main circuit forming the electronic terminal, and the protection circuit comprising at least an overcharge protection circuit, an over-discharge protection circuit, a charging and discharging temperature protection circuit and a short-circuit protection circuit;
arranging a conducting component on the main board body, the conducting component comprising a first conducting member and a second conducting member; and
electrically connecting the battery cell with the protection circuit through the first conducting member and the second conducting member;
wherein the battery cell is detachably connected with the main board body.

18. The method for assembling a battery cell of an electronic terminal according to claim 17 , wherein
electrically connecting the battery cell with the protection circuit through the first conducting member and the second conducting member comprises:
forming a first tab and a sec

Assignees

• Xiaomi Inc

Inventors

• Wang Zongqiang
• Zhang Xianmin
• Shi Shasha

Classifications

• H05K3/3442

  having edge contacts, e.g. leadless chip capacitors, chip carriers · CPC title

• H05K1/181

  associated with surface mounted components · CPC title

• H05K2201/10409

  Screws · CPC title

• H05K1/117

  Pads along the edge of rigid circuit boards, e.g. for pluggable connectors · CPC title

• C09J5/00

  Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers · CPC title