Lithium battery charging protection circuit and lithium battery
A charging protection, lithium battery technology, applied in battery circuit devices, emergency protection circuit devices, circuit devices, etc., can solve problems such as abnormal chip function and chip overheating, and achieve the effect of eliminating voltage drop, avoiding overheating, and protecting normal operation.
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[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0039] As described in the background technology, in the existing lithium battery protection circuit, especially for the case where the power transistor and the controller are integrated on the same chip, or the power transistor and the controller are different chips but in the same package, when the lithium battery When the voltage of the battery is below the over-discharge voltage value, in the process of charging the lithium battery, since the power transistor is in the disconnected state, it will be charged thr...
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