Battery pack

Patent metadata

Field	Value
Publication number	US-10020547-B2
Application number	US-201414439982-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Oct 17, 2013
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

Disclosed is a battery pack, which allows easy assembling and exchange of electrical equipment and has an uncomplicated structure. The battery pack includes at least one battery module, the battery module including a plurality of secondary batteries, and an electrical equipment plate having a plate shape on which at least two of a battery management system (BMS), a current sensor, a relay and a fuse are mounted, the electrical equipment plate being electrically connected to the at least one battery module.

First claim

What is claimed is:

1. A battery pack, comprising:
at least one battery module, the battery module including a plurality of secondary batteries; and
an electrical equipment plate having a plate shape on which at least two of a battery management system (BMS), a current sensor having two terminals, a relay having two terminals and a fuse having two terminals are mounted, the electrical equipment plate being electrically connected to the at least one battery module,
wherein at least one bus bar is mounted on the electrical equipment plate, and at least two of the current sensor, the relay and the fuse are electrically connected by the bus bar,
wherein the at least one bus bar is located between the electrical equipment plate and the two terminals of at least one of the current sensor, the relay and the fuse,
wherein a plate protrusion is provided on the electrical equipment plate, a coupling hole is formed in the at least one bus bar, and the plate protrusion is inserted into the coupling hole so that the bus bar is fixed onto the electrical equipment plate,
wherein through holes are formed in both terminals of at least one of the current sensor, the relay and the fuse, and the plate protrusion is inserted into the through holes so that both terminals of at least one of the current sensor, the relay and the fuse are connected and fixed to the bus bar, and
wherein the battery module includes a module protrusion formed at an upper portion thereof, and the electrical equipment plate has a plate hole formed at a location corresponding to the module protrusion, so that the module protrusion is inserted into and fixed in the plate hole.

2. The battery pack according to claim 1 , wherein the electrical equipment plate is located at an upper portion of the battery module.

3. The battery pack according to claim 1 , wherein the plate protrusion is fixed by a nut after being inserted into the coupling hole and the through holes.

4. The battery pack according to claim 1 , wherein the plate protrusion is firstly inserted into the coupling hole of the bus bar and then inserted into the through hole of at least one of the current sensor, the relay and the fuse.

5. The battery pack according to claim 1 , wherein the at least one bus bar includes two bus bars, and
wherein the battery module includes a cathode module terminal and an anode module terminal which protrude upwards, coupling holes are formed in at least two of the bus bars, and the cathode module terminal and the anode module terminal are respectively inserted into the coupling holes of the two bus bars for electric connection and fixation.

6. The battery pack according to claim 1 , wherein the electrical equipment plate has a bus bar insert so that the bus bar is at least partially inserted into the bus bar insert.

7. The battery pack according to claim 1 , wherein the BMS has a connection hole formed at a location corresponding to the plate hole, so that the module protrusion is inserted into and fixed in both the plate hole and the connection hole.

8. The battery pack according to claim 1 , wherein the battery module includes a connector connected to both ends of at least one of the plurality of secondary batteries, and the connector is inserted into a port of the BMS.

9. The battery pack according to claim 1 , wherein the at least one battery module is a plurality of battery modules which are arranged in parallel in a horizontal direction, and
wherein the electrical equipment plate is located on the plurality of battery modules arranged in parallel in a horizontal direction.

10. The battery pack according to claim 1 ,
wherein the at least one battery module is a plurality of battery modules which are stacked in parallel in a vertical direction, and
wherein the electrical equipment plate is located on an uppermost battery module among the plurality of battery modules.

11. The battery pack according to claim 1 , further comprising:
a module case for accommodating the battery module in an inner space thereof,
wherein the electrical equipment plate is located on the module case.

12. A vehicle, comprising the battery pack defined in claim 1 .

13. The battery pack according to claim 1 , further comprising:
a pack case for accommodating the battery module and the electrical equipment plate in an inner space thereof.

14. The battery pack according to claim 13 , wherein the pack case includes a lower case having an inner space with an open upper portion and an upper case coupled to the upper open portion of the lower case.

15. The battery pack according to claim 13 , wherein the pack case has an opening formed in an upper portion thereof at a location corresponding to at least one of the BMS, the current sensor, the relay and the fuse.

16. The battery pack according to claim 15 , wherein the pack case has a cover provided at the opening to open or close the opening.

Assignees

• Lg Chemical Ltd

Inventors

• Eom Young-Sop
• Seong Jun-Yeob
• Kim Ki-Youn
• Yu Sung-Chun
• Kang Dal-Mo

Classifications

• H01M10/482 Primary

  for several batteries or cells simultaneously or sequentially · CPC title

• 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

• H01M50/211

  adapted for pouch cells · CPC title

• H01M50/572 Primary

  Means for preventing undesired use or discharge · CPC title

• H01M50/569

  Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) · CPC title