Battery pack
The invention provides a battery pack which comprises a first battery cell and a second battery cell which are connected in series, the first battery cell is provided with a current cut-off device and has a first failure voltage, the current cut-off device is configured to be capable of being discon...
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| Hauptverfasser: | , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a battery pack which comprises a first battery cell and a second battery cell which are connected in series, the first battery cell is provided with a current cut-off device and has a first failure voltage, the current cut-off device is configured to be capable of being disconnected in response to the fact that the voltage value of the first battery cell reaches or exceeds the first failure voltage, and the second battery cell is not provided with the current cut-off device. According to the technical scheme of the invention, the battery pack can use the soft package battery as the second battery cell, and has the advantages of high energy density, low impedance, high discharge power, low temperature rise rate during high-rate discharge, flexible size and the like. And meanwhile, the cylindrical battery can be used as the first battery cell, and a current cut-off device is arranged in the cylindrical battery, so that the problem of thermal runaway caused by easy overcharge of the soft p |
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