Secondary battery pack

Patent metadata

Field	Value
Publication number	US-10014560-B2
Application number	US-201414904836-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Jul 16, 2013
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

Provided is a secondary battery pack including a plurality of secondary battery modules including a plurality of secondary battery cells stacked in parallel to each other in a vertical direction, a cover, and a switch installed at an upper side of the one end in the horizontal direction of the cover, a housing, a Power Relay Assembly (PRA) including a relay electrically connected to the secondary battery cells and switches, for transmitting charging power supplied from the outside to the secondary battery cells when the relay is in a close state and changing the relay to an open state when the switch is pushed according to pressure applied to an upper side from a lower surface of the cover, and a Battery Management System (BMS) for controlling the Power Relay Assembly (PRA).

First claim

The invention claimed is:

1. A secondary battery pack comprising:
a plurality of secondary battery modules comprising a plurality of secondary battery cells stacked in parallel to each other in a vertical direction, a cover covering an uppermost surface of the secondary battery cells and a support member supporting a central portion in a horizontal direction, and a switch disposed above one side of the cover;
a housing for accommodating the secondary battery modules therein;
a Power Relay Assembly (PRA) comprising a relay electrically connected to the secondary battery cells and switches, for transmitting charging power supplied from the outside to the secondary battery cells when the relay is in a close state and changing the relay to an open state when the switch is pushed; and
a Battery Management System (BMS) for controlling the Power Relay Assembly (PRA),
wherein
the support member surrounds both the central portion in the horizontal direction of the secondary battery cells and the cover,
the central portion of the cover is fixed and the one side of the cover is lifted upward when the secondary battery cells are expanded, and the switch is pushed by the one side of the cover which is lifted.

2. The secondary battery pack of claim 1 , wherein the secondary battery module further comprises a fixing member for fixing the switch to the upper side of the cover.

3. The secondary battery pack of claim 1 , wherein: the secondary battery module further comprises a cutting groove concave forward and backward at one end in the horizontal direction of the cover, wherein the cutting groove is cut according to pressure applied to the upper side from the lower surface of the cover; and the switch is installed at an upper side of the cutting groove.

4. The secondary battery pack of claim 3 , wherein the cutting groove is formed in the lower surface of the cover.

Assignees

• Sk Innovation Co Ltd

Inventors

• Ju Seung Hoon
• Lee Ji Yoon
• Lim Dong Hun
• Lee Yun Nyoung
• Kim Won Wook
• Kim Sang Hyuk
• Ko Jeong Woon

Classifications

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M10/425 Primary

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M2010/4271

  Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing · CPC title

• H01M50/264

  for cells or batteries, e.g. straps, tie rods or peripheral frames · CPC title

• H01M50/211 Primary

  adapted for pouch cells · CPC title