Title:
HEAT MEDIUM HEATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/140201
Kind Code:
A1
Abstract:
[Problem] To provide a heat medium heating device that is configured so as to heat a heat medium for heating a vehicle interior and that can suppress a decrease in stability of vehicle interior temperature control while consuming power (waste power) for protection or the like of a power storage device. [Solution] This heat medium heating device includes: a heater for heating a heat medium through generating heat by electrification; a switching element that is provided to an electrification circuit with respect to the heater and that is capable of turning on and off electrification; a driver for driving on/off the switching element; and a control unit for controlling electrification of the heater by generating a first PWM signal based on a heating request and outputting the signal to the driver. When a power consumption request has been inputted, the control unit stores a duty ratio of the first PWM signal, generates a second PWM signal based on the power consumption request, and outputs the second PWM signal in place of the first PWM signal to the driver for a predetermined time.
Inventors:
OKADA MIZUKI (JP)
Application Number:
PCT/JP2023/000928
Publication Date:
July 27, 2023
Filing Date:
January 16, 2023
Export Citation:
Assignee:
SANDEN CORP (JP)
International Classes:
B60H1/22
Domestic Patent References:
| WO2018135168A1 | 2018-07-26 | |||
| WO2013054853A1 | 2013-04-18 | |||
| WO2019239812A1 | 2019-12-19 |
Foreign References:
| JPH0835716A | 1996-02-06 | |||
| JP2007032875A | 2007-02-08 | |||
| JP2018052165A | 2018-04-05 |
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