IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0851876
(2010-08-06)
|
등록번호 |
US-8329324
(2012-12-11)
|
우선권정보 |
KR-10-2009-0027931 (2009-04-01) |
발명자
/ 주소 |
- Lee, BumHyun
- Lee, Jin Kyu
- Yoon, Hee Soo
- Kang, Dal Mo
- Yoon, Jongmoon
- Yang, Jae Hun
- Shin, Inchul
- Shin, Yongshik
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
2 |
초록
▼
Disclosed herein is a voltage sensing member for sensing voltages of battery cells constituting a battery module, the voltage sensing member including (a) a pair of supporting parts, i.e., a front supporting part and a rear supporting part, mounted to a bottom of the battery module at regions (a fro
Disclosed herein is a voltage sensing member for sensing voltages of battery cells constituting a battery module, the voltage sensing member including (a) a pair of supporting parts, i.e., a front supporting part and a rear supporting part, mounted to a bottom of the battery module at regions (a front part and a rear part of the battery module) corresponding to electrode terminal connections of the battery cells, (b) a connection part for electrically interconnecting the front supporting part and the rear supporting part, (c) conductive sensing parts having one-side ends coupled to the corresponding supporting parts via wires, each of the conductive sensing parts having a larger contact surface than each of the wires, and (d) a connector mounted on the front supporting part or the rear supporting part for transmitting the sensed voltages of the battery cells to a battery control device, wherein the conductive sensing parts are connected to the electrode terminal connections of the battery cells in a surface contact manner.
대표청구항
▼
1. A voltage sensing member for sensing voltages of battery cells constituting a battery module, the voltage sensing member including (a) a pair of supporting parts including a front supporting part and a rear supporting part, mounted to a bottom of the battery module at regions at a front part and
1. A voltage sensing member for sensing voltages of battery cells constituting a battery module, the voltage sensing member including (a) a pair of supporting parts including a front supporting part and a rear supporting part, mounted to a bottom of the battery module at regions at a front part and a rear part of the battery module corresponding to electrode terminal connections of the battery cells,(b) a connection part for electrically interconnecting the front supporting part and the rear supporting part,(c) plate strip shaped conductive sensing parts having one-side ends coupled to the corresponding supporting parts via wires, each of the plate strip shaped conductive sensing parts having a larger contact surface than each of the wires, each of the plate strip shaped conductive sensing parts having a smaller size than the electrode terminal connections, and(d) a connector mounted on the front supporting part or the rear supporting part for transmitting the sensed voltages of the battery cells to a battery control device, whereinthe conductive sensing parts are directly connected to the electrode terminal connections of the battery cells in a surface contact manner, anda portion of each of the electrode terminal connections is cut to a size corresponding to the size of each of the plate strip shaped conductive sensing parts. 2. The voltage sensing member according to claim 1, wherein each of the plate strip shaped conductive sensing parts has a width equivalent to 10 to 80% of a width of each of the electrode terminal connections. 3. The voltage sensing member according to claim 1, wherein each of the plate strip shaped conductive sensing parts has a height equivalent to 20 to 70% of a height of each of the electrode terminal connections. 4. The voltage sensing member according to claim 1, wherein each of the plate strip shaped conductive sensing parts has a surface contact area with respect to a corresponding one of the electrode terminal connections equivalent to 30 to 60% of a connection area of each of the electrode terminal connections. 5. The voltage sensing member according to claim 1, wherein, at each of the electrode terminal connections, one-side electrode terminal (a) is cut to a size corresponding to a size of each of the plate strip shaped conductive sensing parts, and one-side electrode terminal (a) and a corresponding one of the plate strip shaped conductive sensing parts are connected to the other-side electrode terminal (b) in a surface contact manner. 6. The voltage sensing member according to claim 1, wherein connection between the electrode terminal connections and the plate strip shaped conductive sensing parts is achieved by welding. 7. The voltage sensing member according to claim 1, wherein the front supporting part and the rear supporting part are formed of a printed circuit board (PCB). 8. The voltage sensing member according to claim 1, wherein the plate strip shaped conductive sensing parts are formed of a copper strip. 9. The voltage sensing member according to claim 1, wherein the electrode terminal connections are bent perpendicularly in a direction in which ends of anode terminals of the battery cells facing cathode terminals of the battery cells face each other. 10. The voltage sensing member according to claim 9, wherein the cathode terminals are copper electrode leads, and the anode terminals are aluminum electrode leads. 11. The voltage sensing member according to claim 10, wherein, at each of the electrode terminal connections, an end of each of the copper electrode leads is cut to a size corresponding to a size of each of the plate strip shaped conductive sensing parts, and each of the copper electrode leads and a corresponding one of the plate strip shaped conductive sensing parts are coupled to each of the aluminum electrode leads by welding. 12. The voltage sensing member according to claim 1, wherein an insulative protection film is provided at a connection region between each of the plate strip shaped conductive sensing parts and a corresponding one of the electrode terminal connections. 13. A battery module including the voltage sensing member according to claim 1. 14. The battery module according to claim 13, wherein the battery module includes (a) a battery cell stack including a plurality of battery cells or unit modules connected in series to each other in a state in which the battery cells or the unit modules stand in a lateral direction thereof,(b) an upper case configured in a structure to surround one side of the battery cell stack and to surround a portion of an upper end and a portion of a lower end of the battery cell stack, the upper case being provided at a front part thereof with external input and output terminals,(c) a lower case coupled to the upper case for surrounding the other side of the battery cell stack and surrounding a portion of the upper end and a portion of the lower end of the battery cell stack, the lower case being provided at a front part thereof with bus bars for connecting electrode terminals of the battery cells to the external input and output terminals, the voltage sensing member being mounted at a bottom of the lower case, and(d) a front cover mounted to the front part of the lower case for protecting connection regions between the electrode terminals of the battery cells and the bus bars from outside, the front cover being made of an insulative material. 15. The battery module according to claim 14, wherein the voltage sensing member includes the plate strip shaped conductive sensing parts mounted in spaces defined on the front and rear parts of the lower case such that the plate strip shaped conductive sensing parts are coupled to the electrode terminal connections, the supporting parts, and the connection part, the supporting parts and the connection part being mounted to the bottom of the lower case. 16. The battery module according to claim 14, wherein the battery cell stack includes a plurality of unit modules each including plate-shaped battery cells having electrode terminals formed at upper and lower ends thereof, and each unit module includes two or more battery cells configured in a stacked structure in which electrode terminals of the battery cells are connected in series to each other and electrode terminal connections are bent such that the battery cells are stacked and a pair of high-strength cell covers configured to surround outsides of the battery cells excluding the electrode terminals of the battery cells when the cell covers are coupled with each other. 17. The battery module according to claim 14, wherein the lower case is provided at the front part and a rear part thereof with spaces in which supporting parts and plate strip shaped conductive sensing parts of the voltage sensing member are placed, and the plate strip shaped conductive sensing parts are connected to portions of series-connection bent regions providing electrode terminal connections of the electrode terminals of the battery cells in a surface contact manner by welding. 18. The battery module according to claim 14, wherein the lower case is provided at the front part thereof with a pair of slits through which outermost electrode terminals of the battery cell stack are inserted, and the outermost electrode terminals of the battery cell stack are inserted through the slits and then connected to the bus bars located at the front part of the lower case. 19. The battery module according to claim 14, wherein the lower case is provided at the rear part thereof with a battery control device connected to the voltage sensing member for monitoring and controlling an operation of the battery module. 20. A battery system manufactured using the battery module according to claim 13 as a unit body. 21. The battery system according to claim 20, wherein the battery system is used as a power source for electric vehicles, hybrid electric vehicles, or plug-in hybrid electric vehicles. 22. The voltage sensing meter according to claim 1, wherein the plate strip shaped conductive sensing parts do not include springs.
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