Vehicle and control method for vehicle
US-2017015200-A1 · Jan 19, 2017 · US
Motor-driven vehicle
US10974611B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10974611-B2 |
| Application number | US-201916560069-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 4, 2019 |
| Priority date | Nov 7, 2018 |
| Publication date | Apr 13, 2021 |
| Grant date | Apr 13, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A motor-driven vehicle includes a system main relay that is attached to a running electric power line connecting a power storage device to a drive circuit, a capacitor that is attached to the running electric power line between the system main relay and the drive circuit, and a charging relay that is attached to a charging electric power line connecting a vehicle-side connector to the running electric power line between the system main relay and the drive circuit. When a stand-side connector is disconnected from the vehicle-side connector while the power storage device is being charged with electric power from a direct-current charging stand, the charging relay and the system main relay are turned off, a two-pole welding abnormality of the charging relay is diagnosed using a voltage of the capacitor, and then the capacitor is discharged.
First claim
Opening claim text (preview).
What is claimed is: 1. A motor-driven vehicle comprising: an electric motor that outputs running power; a drive circuit that drives the electric motor; a power storage device; a system main relay that is attached to a running electric power line connecting the power storage device to the drive circuit; a capacitor that is attached to the running electric power line between the system main relay and the drive circuit; a vehicle-side connector that is connected to a stand-side connector of a direct-current charging stand outside the vehicle; a charging relay that is attached to a charging electric power line connecting the vehicle-side connector to the running electric power line between the system main relay and the drive circuit; and a control device that controls the system main relay and the charging relay, wherein, when the stand-side connector is disconnected from the vehicle-side connector while the power storage device is being charged with electric power from the direct-current charging stand, the control device turns off the charging relay, turns off the system main relay, diagnoses a two-pole welding abnormality of the charging relay in that state, and discharges the capacitor. 2. The motor-driven vehicle according to claim 1 , wherein the control device diagnoses the two-pole welding abnormality of the charging relay using a voltage of the charging electric power line between the charging relay and the vehicle-side connector.
Assignees
Inventors
Classifications
exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title
using battery or load disconnect circuits (H02J9/002 takes precedence) · CPC title
Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) · CPC title
- B60L53/14Primary
Conductive energy transfer · CPC title
Plug-in electric vehicles · CPC title
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Frequently asked questions
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- What does patent US10974611B2 cover?
- A motor-driven vehicle includes a system main relay that is attached to a running electric power line connecting a power storage device to a drive circuit, a capacitor that is attached to the running electric power line between the system main relay and the drive circuit, and a charging relay that is attached to a charging electric power line connecting a vehicle-side connector to the running e…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60L53/14. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 13 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).