Battery pack

Patent metadata

Field	Value
Publication number	US-11271275-B2
Application number	US-201716345938-A
Country	US
Kind code	B2
Filing date	Oct 27, 2017
Priority date	Oct 31, 2016
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

An embodiment of the present disclosure provides a battery pack including: a battery cell including an electrode assembly and a casing, the casing accommodating the electrode assembly therein and forming a terrace from which an electrode tab electrically connected to the electrode assembly protrudes; a protective circuit module seated on the terrace, the protective circuit module including a thermal cut-off member located on a side of the terrace and a connection tab electrically connected to the electrode tab; and insulating tape located between the battery cell and the protective circuit module, wherein the insulating tape provides insulation between the electrode tab and the protective circuit module and between the terrace and the thermal cut-off member.

First claim

The invention claimed is:

1. A battery pack comprising:
a battery cell comprising an electrode assembly and a casing, the casing accommodating the electrode assembly therein and forming a terrace from which an electrode tab electrically connected to the electrode assembly protrudes in a direction away from the terrace, the direction away from the terrace being a lengthwise direction of the battery cell;
a protective circuit module seated on the terrace, the protective circuit module comprising a thermal cut-off member located on a side of the terrace and a connection tab electrically connected to the electrode tab, the electrode tab being physically connected to the protective circuit module at the connection tab; and
insulating tape located between the battery cell and the protective circuit module,
wherein the connection tab is spaced from the thermal cut-off member in the direction away from the terrace,
wherein the insulating tape covers the thermal cut-off member while exposing the connection tab and provides insulation
i) between the electrode tab and the protective circuit module and
ii) between the terrace and the thermal cut-off member,
wherein the electrode tab is welded to the connection tab.

2. The battery pack of claim 1 , wherein the protective circuit module comprises:
a first sub-protective circuit module adjacent to the terrace; and
a second sub-protective circuit module connected to the first sub-protective circuit module and extending in the direction away from the terrace,
wherein the thermal cut-off member is provided on the first sub-protective circuit module, and
the connection tab is provided on the second sub-protective circuit module.

3. The battery pack of claim 1 , wherein the insulating tape covers a first surface of the protective circuit module located on a side of the terrace and a second surface of the protective circuit module located on a side of the casing.

4. The battery pack of claim 3 , wherein the insulating tape covers a third surface of the protective circuit module which is opposite the first surface.

5. The battery pack of claim 2 , wherein the electrode tab comprises:
a first sub-electrode tab located at a side of the first sub-protective circuit module; and
a second sub-electrode tab located at a side of the second sub-protective circuit module,
wherein the insulating tape is located between the first sub-protective circuit module and the first sub-electrode tab.

6. The battery pack of claim 5 , wherein the second sub-electrode tab is electrically connected to the connection tab.

7. The battery pack of claim 1 , wherein the battery cell comprises a first sub-battery cell and a second sub-battery cell arranged side by side in a length direction of the protective circuit module.

8. The battery pack of claim 7 , wherein an electrode tab of the first sub-battery cell and an electrode tab of the second sub-battery cell protrude in a same direction.

9. The battery pack of claim 1 , wherein the battery cell is a pouch-type secondary battery.

10. The battery pack of claim 1 , further comprising a housing sealing the battery cell, the protective circuit module, and the insulating tape.

11. The battery pack of claim 10 , wherein the housing comprises at least one coupling hole.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Lee Eunjoong
• Yoo Daehyeong

Classifications

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M50/262

  with fastening means, e.g. locks · CPC title

• H01M10/486 Primary

  for measuring temperature · CPC title

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/531

  Electrode connections inside a battery casing · CPC title