BATTERY CHARGING/DISCHARGING DEVICE

Japanese Patent JP2023173429

A

To reduce current pulsation without increasing switching frequency in a battery charging/discharging device of a switching regulator.SOLUTION: First and second variable DC power sources C3 and C4 are serially connected to each other. Fifth and sixth switching elements Q5 and Q6 are serially connected to between a positive electrode of the first variable DC power C3 and a negative electrode of the second variable DC power sources C4, and seventh and eighth switching elements Q7 and Q8 are serially connected to each other. Each reflux diode is connected in parallel to each of fifth to eighth switching elements Q5 to Q8. One end of a third DC reactor L3 is connected to a connection point of the fifth and sixth switching elements Q5 and Q6. One end of a fourth DC reactor L4 is connected to the connection point of the seventh and eighth switching elements Q7 and Q8. Each of other ends of the third and fourth DC reactors L3 and L4 is connected to the one end of a battery 300. The other end of the battery 300 is connected to the connection point of the first variable DC power C3 and the second variable DC power C4. Current detection means detects a charging and discharging current of the battery 300.SELECTED DRAWING: Figure 1

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MORITA KAZUNORI

JP2022085682A

December 07, 2023

May 26, 2022

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MEIDENSHA ELECTRIC MFG CO LTD

H02M3/155

Hiromichi Kobayashi
Kiyoshi Tomioka
Hidehisa Uzawa
Tomoyuki Ota

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