Electric power conversion device for providing a stabilized potential to a cooler
US10165701B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jul 3, 2017 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Jul 3, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2201/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a converter circuit of an electric power conversion device, an adjustment portion divides a voltage of a battery input to a semiconductor module, by a first capacity element and a second capacity element that are connected in series to each other. Then, a middle point between the first capacity element and the second capacity element is connected to a cooler to fix a potential thereof. The electric power conversion device can ensure that a waveform of a surge voltage that is generated on a creepage surface between a lead frame terminal and the cooler has a negative voltage range (a range where an offset voltage is applied).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.