Lithium ion battery module management circuit
A lithium-ion battery and management circuit technology, applied in the field of lithium-ion battery module management circuits, can solve the problems of lack of module-level independent protection, no protection control function, battery pack safety problems, etc., to improve overall safety and reliability, Avoid overcharge and overdischarge, low cost effect
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[0019] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.
[0020] The purpose of the invention is that in addition to the parameter detection circuit and the communication function in the management circuit of the battery module, two field effect transistors are added to realize the independent protection function of the battery module, wherein one field effect transistor is connected in series with the battery, and the other field effect transistor is connected in series. It is connected in parallel to the output end of the battery module, and the single-chip microcomputer controls the on-off of the two field effect transistors through the driving circuit respectively. When the battery module is abnormal, the charging and discharging circuit of the battery module is cut off, and the output end is in the bypass conduction state. This not only ensures the safety of the battery module, but also does not...
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