Battery pack including bushing for connecting end plate

• US 9,972,822 B2
• Filed: 03/25/2015
• Issued: 05/15/2018
• Est. Priority Date: 06/11/2014
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Kim, Young-Gil, Mun, Jeong-O, Lee, Jae-Min, Kang, Dal-Mo, Kim, Soo-Ryoung, Yang, Jae-Hun, Yim, Sang-Wook
• Primary Examiner(s): RIDLEY, BASIA ANNA
• Assistant Examiner(s): Chan, Heng M.
• Application Number:
  US14/774,236
• Publication Number:
  US 20160126531A1
• Time in Patent Office: 1,147 Days
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 50/211 adapted for pouch cells
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/264 for cells or batteries, e.g. straps, tie rods or peripheral frames
• CPC Class Codes: H01M 50/291 characterised by their shape
• CPC Class Codes: H01M 50/505 comprising a single busbar
• CPC Class Codes: H01M 50/548 on opposite sides of the cell
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• CPC Class Codes: H01M 50/561 Hollow metallic terminals, e.g. terminal bushings
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Disclosed is a battery pack including a bushing for connecting an end plate. The battery pack according to the present disclosure connects an upper housing and an end plate for a battery module assembly by the bushing.

Claims

1. A battery pack comprising:

a plurality of battery modules, each comprising two secondary battery cells, a module frame, and a cooling pin;

a lower housing assembly comprising a cooling plate, a front housing, a rear housing, a busbar, and a sensing connector, and which is connected to a bottom of a battery module assembly in which the plurality of battery modules is assembled;

a front circuit assembly which is electrically connected to the sensing connector and electrode leads formed in the plurality of battery modules included in the battery module assembly;

a front cover which is connected to the front housing and prevents the front circuit assembly from being exposed to outside;

two upper housings which are respectively connected to the front housing and the rear housing;

an end plate for the battery module assembly disposed at both sides of the battery module assembly; and

a plurality of bushings which connects the two upper housings and the end plate for a battery module assembly.

2. The battery pack according to claim 1, wherein the end plate for the battery module assembly comprises:

a first plate which comes into contact with one side of the battery module assembly;

a second plate which comes into contact with the other side of the battery module assembly; and

at least one an upper strap extending from an upper edge of the first plate and an upper edge of the second plate.

3. The battery pack according to claim 2, wherein at least two upper straps are provided.

4. The battery pack according to claim 2, wherein the at least one upper strap is disposed at a location to cover a center point of a top surface of the battery module assembly.

5. The battery pack according to claim 2, wherein the end plate for the battery module assembly further comprises a plurality of bushing connection plates extending from each of the first plate and the second plate, and having surfaces perpendicular to each of the first plate and the second plate and holes corresponding to a size of the plurality of bushings.

6. The battery pack according to claim 5, wherein the two upper housings have holes into which each bushing is inserted, and the plurality of bushing connection plates is formed at locations corresponding to the holes formed in the upper housings.

7. A battery operating system comprising:

a battery pack according to claim 1; and

a load which is supplied with power from the battery pack.

8. The battery operating system according to claim 7, wherein the load is an electrical drive means or a portable device.