Lithium battery cover plate
The utility model provides a lithium battery cover plate which comprises a liquid supplementing hole, the liquid supplementing hole is formed in the lithium battery cover plate and comprises a first stepped hole and a second stepped hole, and the diameter of the first stepped hole is larger than tha...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model provides a lithium battery cover plate which comprises a liquid supplementing hole, the liquid supplementing hole is formed in the lithium battery cover plate and comprises a first stepped hole and a second stepped hole, and the diameter of the first stepped hole is larger than that of the second stepped hole; the annular groove is formed in the lithium battery cover plate around a first stepped hole in the liquid supplementing hole, and the diameter of the annular groove is larger than that of the first stepped hole; the lithium battery further comprises a liquid supplementing structure which is used for sealing a liquid supplementing hole comprising a first stepped hole and a second stepped hole in the lithium battery cover plate, and the diameter of the first stepped hole is larger than that of the second stepped hole; the liquid supplementing structure comprises a first sealing element, a third sealing element and a second sealing element, and the second sealing element is used for seali |
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