Title:
BATTERY CHARGE/DISCHARGE TESTING DEVICE AND BATTERY DISCHARGE POWER CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/249601
Kind Code:
A1
Abstract:
Provided is a battery charge/discharge testing device that can efficiently use discharged power generated as regenerative power during discharging of a test battery. The battery charge/discharge testing device: has a sub charge/discharge unit that is connected to a main charge/discharge unit via a bus line; executes sub power supply control whereby discharged power from an internal battery in the sub charge/discharge unit is supplied to the bus line via a full bridge circuit by performing duty ratio control of on/off for a switching element in the full bridge circuit in a sub DC/DC conversion unit such that the voltage between bus lines is a first prescribed voltage value when the output voltage of the internal battery is within a power supply permitted voltage range; stops sub power supply control when the voltage between bus lines exceeds the first prescribed voltage value during sub power supply control; and executes constant-current charging control that charges the internal battery via the full bridge circuit, using discharged power from a test battery as power supply, said discharged power being supplied between bus lines by duty ratio control of on/off for the switching element.
Inventors:
TOMIZAWA YUTAKA (JP)
SHOJI HIDEKI (JP)
SHOJI HIDEKI (JP)
Application Number:
PCT/JP2022/007724
Publication Date:
December 01, 2022
Filing Date:
February 24, 2022
Export Citation:
Assignee:
TOYO SYSTEM CO LTD (JP)
International Classes:
H02M3/155; H02J7/00
Foreign References:
| JP2014220896A | 2014-11-20 | |||
| JP2011080966A | 2011-04-21 | |||
| JP2015122943A | 2015-07-02 |
Attorney, Agent or Firm:
SATO & ASSOCIATES (JP)
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