Title:
CHARGE/DISCHARGE TESTING DEVICE AND BATTERY LIFE EVALUATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/171799
Kind Code:
A1
Abstract:
A charge/discharge testing device 10 comprises: an AC/DC converter 14 connected at an AC-side terminal to a commercial AC power supply 12 and connected at a DC-side terminal to a common DC bus 13; a plurality of bidirectional DC/DC converters 15 each connected at one end to the common DC bus 13 and connected at the other end to one of samples 11 in which a plurality of secondary batteries are connected in series; a storage battery 16 having a capacity equivalent to or greater than the total capacity of the plurality of samples 11 that are tested simultaneously, and connected to the common DC bus 13; a solar panel 17 having an open voltage higher than the full-charge voltage of the storage battery 16, and connected to the common DC bus 13; and a control unit 18 that controls each of the bidirectional DC/DC converters 15. During a charge/discharge test, electric power is exchanged between each of the samples 11 and the storage battery 16, and a power deficit in the storage battery 16 is compensated for by electric power generated by the solar panel 17.
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Inventors:
SATO YUJI (JP)
Application Number:
PCT/JP2023/009356
Publication Date:
September 14, 2023
Filing Date:
March 10, 2023
Export Citation:
Assignee:
EV MOTORS JAPAN CO LTD (JP)
International Classes:
H02J7/00; H02J7/02; H02J7/34; H02J7/35
Domestic Patent References:
| WO2012032776A1 | 2012-03-15 |
Foreign References:
| JP2017531983A | 2017-10-26 | |||
| JP2012154793A | 2012-08-16 |
Attorney, Agent or Firm:
NAKAMAE Fujio (JP)
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