Electricity-taking method and device for detecting battery internal resistance
A technology of battery internal resistance and detection circuit, which is applied in the direction of measuring device, measuring resistance/reactance/impedance, measuring electricity, etc., can solve the problems affecting the detection accuracy and achieve the effect of high common mode rejection ratio
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[0040] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] refer to image 3 , an embodiment of a method for detecting battery internal resistance and taking electricity according to the present invention is proposed. The method includes:
[0042] Step S10, generating at least two positive and negative power supply circuits for the battery under test to supply power for at least one detection circuit;
[0043] Step S11, performing high-precision sampling on the positive and negative power supply circuits.
[0044] When detecting the internal resistance of the battery pack, at least one positive and one negative power supply circuit is generated for the tested battery in the battery pack to supply power for the detection circuit. A positive and negative two-way power supply circuit can be generated by at least two tested batteries, then the above-mentioned tested bat...
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