Title:
IN-VEHICLE HIGH VOLTAGE SYSTEM AND ELECTRONIC CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/004631
Kind Code:
A1
Abstract:
A heating device (2), which is connected to a high voltage battery (1) via an electric circuit (4), turns on and off its own switching elements to charge and discharge the high voltage battery (1), thereby performing a battery heating operation that raises the temperature of the high voltage battery (1). High-voltage auxiliary equipment (3, 6) is electrically connected to the electric circuit (4) connecting the high voltage battery (1) and the heating device (2), and is driven by electric power supply from the high voltage battery (1). Prior to performing the battery heating operation, electronic control devices (23, 33, 63) perform a warm-up operation to warm up smoothing capacitors (32, 62) of the high-voltage auxiliary equipment (3, 6) by turning on and off the switching elements of the high-voltage auxiliary equipment (3, 6) or the heating device (2) to prevent voltage fluctuations or current fluctuations that occur during the battery heating operation from exceeding the allowable values of each component of the high-voltage auxiliary equipment (3, 6).
Inventors:
SANZEN TOSHITADA (JP)
SAKAI KOJI (JP)
SAKAI KOJI (JP)
Application Number:
PCT/JP2023/021902
Publication Date:
January 04, 2024
Filing Date:
June 13, 2023
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
B60L58/25; B60L1/00; H01M10/615; H01M10/625; H01M10/633; H02J7/00
Foreign References:
| JPH03251084A | 1991-11-08 | |||
| JP2020162353A | 2020-10-01 | |||
| JP2018046661A | 2018-03-22 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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