Battery explosion-proof circuit and battery charging circuit
A battery charging and circuit technology, applied in battery circuit devices, circuit devices, emergency protection circuit devices, etc., can solve problems such as overheating and damage of electronic switches, secondary damage of batteries, failure to limit load current, etc.
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Embodiment 1
[0053] As a battery explosion-proof circuit according to an embodiment of the present invention, such as figure 2 As shown, the power electronic switch Q1 shown in the figure is a P-channel enhancement MOS transistor, and the feedback control switch Q3 is a PNP transistor. The battery explosion-proof circuit of this embodiment includes:
[0054] A current limiting module, the current limiting module includes an input terminal and an output terminal, the input terminal of the current limiting module is connected to the positive pole of the battery.
[0055] The current limiting module specifically includes: a current limiting resistor R7, a protection resistor R10, a control resistor R9, a feedback resistor R15, a control resistor R13, a power electronic switch Q1 and a feedback control switch Q3, wherein,
[0056] Both the power electronic switch Q1 and the feedback control switch Q3 include an input terminal, an output terminal and a control terminal, and when the relative ...
Embodiment 2
[0066] like image 3 As shown, as an explosion-proof circuit for a battery according to an embodiment of the present invention, on the basis of Embodiment 1 above, there are two current limiting modules, and the two current limiting modules are connected in series.
[0067] The battery explosion-proof circuit provided by the present invention is equipped with two current limiting modules, which further ensures the reliability of the circuit. When one of the current limiting modules fails, it can still ensure that the circuit can accurately limit the load current.
Embodiment 3
[0069] An explosion-proof circuit for a battery as an embodiment of the present invention, on the basis of Embodiment 1 or 2 above, further includes an overvoltage protection module, the overvoltage protection module includes an input terminal, an output terminal and a ground terminal, Both the input terminal and the output terminal of the overvoltage protection module are connected to the output terminal of the current limiting module, and the ground terminal of the overvoltage protection module is connected to the negative pole of the battery.
[0070] The battery explosion-proof circuit provided by the present invention is provided with an overvoltage protection module to prevent excessive high voltage from being generated in the circuit from damaging components.
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