Button type lithium ion battery
The utility model discloses a button type lithium ion battery which comprises a housing and a roll core arranged inside the housing, wherein the housing comprises a positive electrode housing and a negative electrode housing; the roll core is formed by winding a positive electrode sheet and a negati...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a button type lithium ion battery which comprises a housing and a roll core arranged inside the housing, wherein the housing comprises a positive electrode housing and a negative electrode housing; the roll core is formed by winding a positive electrode sheet and a negative electrode sheet at least; the positive electrode sheet is provided with a positive electrode elongated body; the negative electrode sheet is provided with a negative electrode sheet elongated body; the positive electrode elongated body is clamped between the positive electrode housing and the negative electrode housing; the negative electrode sheet elongated body is arranged outside the roll core. Through the adoption of the invention, the button type lithium ion battery has a reasonable structure, is simple in production process, high in reliability, and suitable for mass production, can thoroughly solve the problem that the internal resistance of the battery is high due to poor contact and the problem of micro |
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