The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2024
Filed:
Apr. 19, 2019
Mitsubishi Heavy Industries Thermal Systems, Ltd., Tokyo, JP;
Hidetaka Sato, Tokyo, JP;
Tomoyasu Osaki, Tokyo, JP;
Keiji Nagasaka, Tokyo, JP;
Ryota Kojima, Tokyo, JP;
Abstract
This vehicle-mounted air conditioner control device () comprises: a PTC heater (H) that is included in a high-voltage system circuit (HV) and generates heat by the power supplied from a high-voltage battery (B); and a microcomputer () that is included in the high-voltage system circuit (HV) and controls the power supply from the high-voltage battery (B) to the PTC heater (H). This vehicle-mounted air conditioner control device () further comprises: a water temperature sensor () that is included in a low-voltage system circuit (LV) and outputs a voltage signal corresponding to the temperature of hot water; and a V/f conversion unit () that is included in the low-voltage system circuit (LV) and converts the voltage signal output from the water temperature sensor () into a frequency signal. This vehicle-mounted air conditioner control device () further comprises a digital isolator () that transmits the frequency signal to the microcomputer () while maintaining electrical insulation between the V/f conversion unit () and the microcomputer ().