Battery pack charging control method and charging assembly
A charging control method and a technology of charging components, which are applied in battery circuit devices, electrical components, charge equalization circuits, etc., and can solve problems such as inability to guarantee battery 1, inability to ensure a balanced state, etc.
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Embodiment 1
[0038] A charging control method for a battery pack, comprising the steps of:
[0039] S200: During the charging process of the battery pack, the voltage of each battery in the battery pack is compared with the corresponding threshold voltage, and when at least one of the battery voltages reaches its corresponding threshold voltage, an equalizing current is turned on to discharge the battery that reaches the corresponding threshold voltage;
[0040] S201: After the balanced current is generated, continue to judge whether at least one of the battery voltages has reached its corresponding threshold voltage, and when the balanced current reaches its maximum current, the above threshold voltage condition is still reached, then by controlling the alternate conduction of the charging switch and cutoff to reduce the average charging current until the battery voltage drops below its corresponding threshold voltage.
[0041] In this implementation, when the threshold voltage condition ...
Embodiment 2
[0043] A charging control method for a battery pack, comprising the steps of:
[0044] S300: During the charging process of the battery pack, the voltage of each battery in the battery pack is compared with the corresponding threshold voltage, and when at least one of the battery voltages reaches its corresponding threshold voltage, an equalizing current is turned on to discharge the battery that reaches the corresponding threshold voltage;
[0045] S301: During the equalizing current discharge process, increase the voltage drop on the charging switch to make it work in a linear mode, so as to reduce the charging current until the battery voltage is lowered below its corresponding threshold voltage.
[0046] During the charging process of the battery pack, the power status of the battery pack is detected in real time. When the battery pack is not fully charged, the constant current charging mode is adopted. When the equalizing current reaches its maximum current and still reac...
Embodiment 4
[0058] Such as image 3 As shown, the equalization circuit includes an output adjustment circuit, an operational amplifier and diodes, and the number of operational amplifiers and diodes is set in one-to-one correspondence with the number of sampling signals. The operational amplifier includes a first input terminal, a second input terminal and an output terminal, the first input terminal receives a sampling signal, the second input terminal receives a reference signal corresponding to the sampling signal, and the output terminal is coupled to one end of a corresponding diode of the operational amplifier, The other end of the diode is coupled to the output adjustment circuit, and the common end of the output adjustment circuit and the diode is coupled to the control end of the charging switch. The function of the output adjustment circuit is to increase the voltage drop on the charging switch, which can be a pull-up circuit or a pull-down circuit, mainly depending on the type ...
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