Power source control device and method for detecting relay abnormality
US-2016156258-A1 · Jun 2, 2016 · US
Electric vehicle
US2016144725A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016144725-A1 |
| Application number | US-201514949058-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 23, 2015 |
| Priority date | Nov 26, 2014 |
| Publication date | May 26, 2016 |
| Grant date | — |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
An electric vehicle disclosed in the specification includes a main battery, a main electric power supply wire connected with the main battery, an electric power control unit including a smoothing capacitor that smooths a voltage of the main electric power supply wire, a switch that switches the main electric power supply wire between conduction and non-conduction, a sub battery having a lower voltage than the main battery, a sub electric power supply wire connected with the sub battery, a first DC-DC converter that can perform a boost operation from the sub electric power supply wire to the main electric power supply wire on the electric power control unit side relative to the switch, and a second DC-DC converter that can perform a buck operation from the main electric power supply wire on the main battery side to the sub electric power supply wire.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electric vehicle comprising: a main battery; a main electric power supply wire connected with the main battery; an electric power control unit including a smoothing capacitor that smooths a voltage of the main electric power supply wire; a switch provided between the main battery and the electric power control unit, the switch being configured to switch the main electric power supply wire between conduction and non-conduction; a sub battery having a lower voltage than the main battery; a sub electric power supply wire connected with the sub battery; a first DC-DC converter connecting the main electric power supply wire and the sub electric power supply wire, the main electric power supply wire connecting the switch and the electric power control unit, the first DC-DC converter being configured to boost electric power from the sub electric power supply wire and to supply the electric power to the main electric power supply wire; and a second DC-DC converter connecting the main electric power supply wire and the sub electric power supply wire, the main electric power supply wire connecting the switch and the main battery, the second DC-DC converter being configured to buck electric power from the main electric power supply wire and to supply the electric power to the sub electric power supply wire. 2 . The electric vehicle according to claim 1 , wherein the first DC-DC converter is a bidirectional DC-DC converter further capable of performing a buck operation to buck electric power from the main electric power supply wire and to supply the electric power to the sub electric power supply wire. 3 . The electric vehicle according to claim 2 , wherein the second DC-DC converter is a unidirectional DC-DC converter capable of performing only the buck operation. 4 . The electric vehicle according claim 2 , wherein the second DC-DC converter is a bidirectional DC-DC converter further capable of performing a boost operation to boost electric power from the sub electric power supply wire and to supply the electric power to the main electric power supply wire. 5 . The electric vehicle according to claim 1 , further comprising a filter configured to: i) suppress noise generation on the sub electric power supply wire side of the first DC-DC converter; and ii) suppress noise generation on the sub electric power supply wire side of the second DC-DC converter. 6 . The electric vehicle according to claim 1 , further comprising a control circuit configured to: i) control an operation of a switching circuit of the first DC-DC converter; and ii) control an operation of a switching circuit of the second DC-DC converter.
Assignees
Inventors
Classifications
with automatic control of the output voltage or current, e.g. flyback converters (H02M3/33561, H02M3/33569 take precedence) · CPC title
- B60L11/18Primary
Operations & Transport · mapped topic
Energy storage systems for electromobility, e.g. batteries · CPC title
Electric energy management in electromobility · CPC title
Electric machine technologies in electromobility · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016144725A1 cover?
- An electric vehicle disclosed in the specification includes a main battery, a main electric power supply wire connected with the main battery, an electric power control unit including a smoothing capacitor that smooths a voltage of the main electric power supply wire, a switch that switches the main electric power supply wire between conduction and non-conduction, a sub battery having a lower v…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60L11/18. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).