发明名称 |
LEAD ACID BATTERY MANUFACTURING METHOD AND LEAD ACID BATTERY |
摘要 |
It is an object of the present invention to provide a lead-acid battery having a reliable exhaust structure suppressing unexpected leakage of acid mist and gas to outside the battery, and a method for fabricating such a lead-acid battery. A first gas exhaust path A for guiding gas generated in a plate pack from a cell compartment 2a to a recess 4 formed in a cover 3 is formed in the cover 3 of a lead-acid battery. A top lid 7 is placed on the top surface of the cover 3 to extend over the recess 4. Then, when the top lid 7 and the cover 3 are welded together by applying laser light 8a onto the top lid 7, a joint 10 is formed to continuously extend in the form of a band and form a closed shape so that the recess 4 and the top lid 7 form an exhaust chamber 11. A through hole 5 for establishing communication between a first opening 6a formed in the recess 4 and a second opening 6b formed in the outer surface of the cover 3, serves as a second gas exhaust path B which establishes communication with the first gas exhaust path A through the exhaust chamber 11. |
申请公布号 |
CA2715265(A1) |
申请公布日期 |
2010.04.01 |
申请号 |
CA20092715265 |
申请日期 |
2009.08.31 |
申请人 |
PANASONIC CORPORATION |
发明人 |
OKAMOTO, TAKESHI;ANZAI, SEIJI |
分类号 |
H01M2/12;H01M2/04;H01M2/36;H01M10/12 |
主分类号 |
H01M2/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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