[특허]Voltage sensing member and battery module employed with the same

LG Chem, Ltd.

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특허 상세정보

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Voltage sensing member and battery module employed with the same

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-010/04 H01M-002/26 H01M-002/22
출원번호	US-0966250 (2010-12-13)
등록번호	US-9484591 (2016-11-01)
우선권정보	KR-10-2006-0020772 (2006-03-06); KR-10-2006-0047891 (2006-05-29)
발명자 / 주소	Shin, Yong Shik Yang, Hee Kook Yang, JaeHun Yoon, Jong Moon Kim, Ju Young
출원인 / 주소	LG Chem, Ltd.
대리인 / 주소	Lerner, David, Littenberg, Krumholz & Mentlik, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 22

초록
▼

Disclosed herein is a voltage sensing member for sensing the voltage of battery cells constituting a battery module, the voltage sensing member comprising: (a) a pair of supporting parts mounted to the bottom of the battery module at regions (the front and rear parts of the battery module) corresponding to electrode terminal connections of the battery cells; (b) connection parts for electrically connecting the supporting parts to a connector; (c) a plurality of conductive sensing parts protruding upward while one end of each is connected to the corresponding support part and the other end of each is elastically connected to electrode terminals of the battery cells; and (d) the connector mounted on the front part or the rear part of the battery module for transmitting the sensed voltage of the battery cells to a battery management system (BMS).

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청구항
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1. A voltage sensing member for sensing the voltage of battery cells constituting a battery module, the voltage sensing member comprising: (a) a pair of supporting parts mounted to the bottom of the battery module at the front and rear parts of the battery module corresponding to electrode terminal connections of the battery cells;(b) connection parts for electrically connecting the supporting parts to a connector;(c) a plurality of conductive sensing parts protruding upward while one end of each is connected to the corresponding support part and the other end of each is elastically connected to electrode terminals of the battery cells; and(d) the connector mounted on the front part or the rear part of the battery module for transmitting the sensed voltage of the battery cells to a battery management system (BMS). 2. The voltage sensing member according to claim 1, wherein the supporting part and connection part are formed of a single linear member. 3. The voltage sensing member according to claim 2, wherein the linear member is a wire. 4. The voltage sensing member according to claim 1, wherein the other end of the conductive sensing part elastically connected to electrode terminals of the battery cells is formed of an elastic clamp structure. 5. The voltage sensing member according to claim 1, further comprising an insulative housing in which the conductive sensing parts are mounted. 6. A battery module including a voltage sensing member according to claim 1. 7. The battery module according to claim 6, wherein the battery module comprises: (a) a battery cell stack including a plurality of battery cells or unit modules connected in series and/or parallel with each other, the battery cells or unit modules being erected in the lateral direction;(b) an upper case constructed in a structure to entirely surround one side end of the battery cell stack and to partially surround the upper and lower ends of the battery cell stack, the upper case being provided at the front part thereof with external input and output terminals;(c) a lower case coupled with the upper case, the lower case being constructed in a structure to entirely surround the other side end of the battery cell stack and to partially surround the upper and lower ends of the battery cell stack, the lower case being provided at the front part thereof with bus bars for connecting electrode terminals of the battery cell stack to the external input and output terminals, the lower case being provided at the bottom thereof with the voltage sensing member; and(d) a front cover mounted to the front part of the lower case for protecting connections between the electrode terminals of the battery cells and the bus bars from the outside, the front cover being made of an insulative material. 8. The battery module according to claim 7, wherein the conductive sensing parts of the voltage sensing member are mounted in spaces defined on the front and rear parts of the lower case, respectively, and the supporting parts and the conduction part of the voltage sensing member are mounted to the bottom of the lower case. 9. The battery module according to claim 8, wherein the lower case is provided at the bottom thereof with a depression in which the connection part is inserted. 10. The battery module according to claim 7, wherein the battery cell stack comprises a plurality of unit modules each including plate-shaped battery cells having electrode terminals formed at the upper and lower ends thereof, and each unit module comprises two or more battery cells constructed in a stacked structure in which electrode terminals of the battery cells are connected in series with each other and the electrode terminal connections are bent such that the battery cells are stacked, and a pair of high-strength cell covers for surrounding the outer surfaces of the battery cells excluding the electrode terminals of the battery cells when the cell covers are coupled with each other. 11. The battery module according to claim 7, wherein the lower case is provided at the front and rear parts thereof with spaces in which the conductive sensing parts of the voltage sensing member are inserted, and the sensing parts are in elastic contact with the lower ends of the electrode terminals of the battery cells and/or electrical connection bent regions (electrode terminal connections) of the electrode terminals of the battery cells. 12. The battery module according to claim 7, wherein the outermost electrode terminals of the battery cell stack are connected to the bus bars located at the front part of the lower case. 13. The battery module according to claim 12, wherein the conductive sensing parts of the voltage sensing member that are connected to the outermost electrode terminals are mounted on the supporting part such that the conductive sensing parts are rotated by a predetermined angle corresponding to the outermost electrode terminals. 14. The battery module according to claim 8, further comprising: insulative covers further disposed on the outer surfaces of the supporting parts mounted to the bottom of the lower case. 15. The battery module according to claim 7, further comprising a temperature sensor protruding upward from the lower case while the temperature sensor is mounted between battery cells or unit modules. 16. A middle- or large-sized battery system having high output and large capacity, the battery system being manufactured using a battery module according to claim 6 as a unit body. 17. The battery system according to claim 16, wherein the battery system is used as a power source for electric vehicles or hybrid electric vehicles or as an electric power storage device.

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Voltage sensing member and battery module employed with the same

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