IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0654043
(2009-12-08)
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등록번호 |
US-8481194
(2013-07-09)
|
우선권정보 |
KR-10-2008-0124112 (2008-12-08) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Bushnell, Esq., Robert E.
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인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
A rechargeable battery includes an electrode group for producing electricity, a case for housing the electrode group, a cap plate combined with the case, an electrode terminal electrically coupled to the electrode group, and a fixing member disposed inside the case and combined to the support shaft
A rechargeable battery includes an electrode group for producing electricity, a case for housing the electrode group, a cap plate combined with the case, an electrode terminal electrically coupled to the electrode group, and a fixing member disposed inside the case and combined to the support shaft portion. The electrode terminal includes a head portion disposed outside the case, and a support shaft portion protruding from the head portion and penetrating the cap plate. Contact resistance of the rechargeable battery can be reduced with this configuration. A battery module includes a plurality of rechargeable batteries and bus bars electrically connecting at least two of the rechargeable batteries, wherein each rechargeable battery includes a case with an internal space, a cap plate combined with the case, an electrode terminal including a head portion caught on the cap plate and a support shaft portion protruding from the head portion and penetrating the cap plate, and a fixing member disposed inside the case and combined to the support shaft portion.
대표청구항
▼
1. A rechargeable battery comprising: an electrode group comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode;a case for housing the electrode group;a cap plate combined with the case;an electrode terminal electrica
1. A rechargeable battery comprising: an electrode group comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode;a case for housing the electrode group;a cap plate combined with the case;an electrode terminal electrically coupled to the electrode group, the electrode terminal comprising: a head portion disposed outside the case; anda support shaft portion protruding from the head portion and penetrating the cap plate;a fixing member disposed inside the case and combined to the support shaft portion; andan auxiliary connection member mechanically coupled to the head portion of the electrode terminal, the auxiliary connection member comprising: a flange portion; anda connection shaft portion protruding from the flange portion. 2. The rechargeable battery of claim 1, wherein the support shaft portion comprises a threaded face, and the fixing member includes a nut. 3. The rechargeable battery of claim 1, wherein the cap plate has a terminal hole, and the support shaft portion is being inserted into the terminal hole. 4. The rechargeable battery of claim 1, wherein the head portion includes a space inside the head portion, a side surface of the head portion having a side opening into the space, an upper surface of the head portion having an upper opening into the space. 5. The rechargeable battery of claim 4, wherein the flange portion is disposed inside the space of the head portion, the connection shaft portion protruding out of the head portion through the upper opening. 6. The rechargeable battery of claim 5, wherein one side of the upper opening has a cutout connecting the upper opening to the side opening, and another side of the upper opening is formed to fit the connection shaft portion. 7. The rechargeable battery of claim 1, wherein the head portion has a space inside the head portion, an upper surface of the head portion having an upper opening into the space, a first side surface of the head portion having a first side opening into the space, a second side surface of the head portion having a second side opening into the space, a first side of the upper opening having a first cutout connecting the upper opening to the first side opening, a second side of the upper opening having a second cutout connecting the upper opening to the second side opening, a size of the first cutout being greater than a size of the second cutout. 8. The rechargeable battery of claim 1, wherein the head portion has a space inside the head portion, an upper surface of the head portion having an upper opening into the space, a first side surface of the head portion having a first side opening into the space, a second side surface of the head portion having a second side opening into the space, a third side of the head portion having a third side opening into the space, a first side of the upper opening having a cutout connecting the upper opening to the first side opening. 9. The rechargeable battery of claim 1, wherein the auxiliary connection member has greater mechanical strength than the electrode terminal. 10. The rechargeable battery of claim 1, wherein an outer surface of the connection shaft portion has a threaded face that is combined with a nut. 11. The rechargeable battery of claim 1, further comprising: a gasket disposed between the cap plate and the support shaft portion to insulate the electrode terminal from the cap plate;a lead member disposed between the cap plate and the fixing member, the lead member connecting an electrode tab of the electrode group to the electrode terminal; andan insulating member disposed between the cap plate and the lead member to insulate the lead member from the cap plate. 12. A battery module comprising: a plurality of rechargeable batteries; anda bus bar electrically connecting at least two of the rechargeable batteries, each of the rechargeable batteries comprising: a case for housing an electrode group that produces electricity;a cap plate combined with the case;an electrode terminal electrically coupled to the electrode group, the electrode terminal comprising: a head portion disposed outside the case; anda support shaft portion protruding from the head portion and penetrating the cap plate;a fixing member disposed inside the case and combined to the support shaft portion; andan auxiliary connection member mechanically coupled to the head portion of the electrode terminal, the auxiliary connection member comprising: a flange portion; anda connection shaft portion protruding from the flange portion. 13. The battery module of claim 12, wherein the connection shaft portion penetrating the bus bar, and the battery module further comprising: a pressing member installed to the connection shaft portion to tightly attach the bus bar to the electrode terminal. 14. The battery module of claim 13, wherein an outer surface of the connection shaft portion has a threaded face, and the pressing member includes a nut. 15. The battery module of claim 12, wherein the bus bar is fixed to the head portion of the electrode terminal through welding. 16. The battery module of claim 12, wherein the support shaft portion comprises a threaded face, and the fixing member includes a nut. 17. The battery module of claim 12, wherein the cap plate has a terminal hole, and the support shaft portion is being inserted into the terminal hole. 18. The battery module of claim 12, wherein the head portion has a space inside the head portion, a side surface of the head portion having a side opening into the space, an upper surface of the head portion having an upper opening into the space. 19. The battery module of claim 18, wherein the flange portion is disposed inside the space of the head portion, the connection shaft portion protruding out of the head portion through the upper opening. 20. The battery module of claim 19, wherein one side of the upper opening has a cutout connecting the upper opening to the side opening, and another side of the upper opening is formed to fit the connection shaft portion. 21. The battery module of claim 12, wherein the head portion has a space inside the head portion, an upper surface of the head portion having an upper opening into the space, a first side surface of the head portion having a first side opening into the space, a second side surface of the head portion having a second side opening into the space, the first side opening facing the second side opening. 22. The battery module of claim 21, wherein a first side of the upper opening having a first cutout connecting the upper opening to the first side opening, a second side of the upper opening having a second cutout connecting the upper opening to the second side opening, a size of the first cutout being greater than a size of the second cutout. 23. The battery module of claim 12, wherein the head portion has a space inside the head portion, an upper surface of the head portion having an upper opening into the space, The head portion having at least three side openings formed at side surfaces of the head portion, the at least three side openings being connected. 24. The battery module of claim 12, wherein the auxiliary connection member has greater mechanical strength than the electrode terminal.
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