Equalizer circuit for backup power supply
A backup power supply and voltage equalizing circuit technology, applied in battery circuit devices, circuit devices, emergency power supply arrangements, etc., can solve problems such as large loss, voltage imbalance, and poor applicability, and achieve the effect of reducing loss and preventing voltage imbalance
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Embodiment 1
[0029] Referring to Figures 3, 4, 5, and 6, a voltage equalizing circuit for a backup power supply, the backup power supply includes n power supply units connected in series, and the voltage equalizing circuit includes a sampling resistor Rs, an input switch circuit, and a transformer T1 and n output rectifying and filtering circuits; the input switching circuit is connected in series with the primary side of the transformer T1 and connected to both ends of the backup power supply through the sampling resistor Rs; the secondary side of the transformer T1 is provided with n step-down output terminals, each The output voltages of the two step-down output terminals are completely consistent and closely coupled; each of the rectification filter circuits is connected to a step-down output terminal, and each of the rectification filter circuits and the input switch circuit form a single-ended flyback; Each rectifying and filtering circuit is respectively connected in parallel with ea...
Embodiment 2
[0042] Referring to Figures 3, 4, 5, and 6, the backup power supply in this embodiment is a supercapacitor bank, and the power supply unit is a supercapacitor. All the other structures and working process are identical with embodiment 1.
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