Failure detection device of power converter and vehicle
US10500961B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Sep 23, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2240/36
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A power converter which can prevent an erroneous detection even when a flow rate of a refrigerant is low and a vehicle having the power converter mounted therein are provided. A first inverter circuit including: an element group constituted by six transistors; six diode temperature sensors at least one of which is provided for each transistor to detect a temperature of the transistor; and a high arm-side refrigerant flow passage and a low arm-side refrigerant flow passage in which a refrigerant for cooling the transistors flows is provided. In a failure detection device of the first inverter circuit, a failure determination member selects two diode temperature sensors among the plurality of diode temperature sensors, which detect temperatures of two adjacent transistors, as an adjacent sensor pair, and determines a failure of any one of the plurality of diode temperature sensors using detection values of the adjacent sensor pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.