Vehicle-mounted bidirectional charger for electric automobile

A technology for electric vehicles and chargers, which is applied in electric vehicles, battery circuit devices, current collectors, etc., to achieve the effects of reducing the risk of electric shock, high safety, and efficient conversion performance
CN102222958BActive Publication Date: 2013-10-16SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Publication Date
2013-10-16

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Abstract

The invention provides a vehicle-mounted bidirectional charger for an electric automobile. The charger comprises an alternating current (AC) / direct current(DC) converter, a DC / DC converter, a microprocessor control circuit and a filtering circuit, wherein one end of the AC / DC converter is connected with a power grid through the filtering circuit and the other end of the AC / DC converter is connected with a battery pack through the DC / DC converter; and the microprocessor control circuit is connected with the AC / DC converter and the DC / DC converter respectively. Energy can be reasonably transformed between the power grid and a power battery by utilizing a peak-valley difference of the power grid, and social energy and user cost are effectively saved; and an isolated double active half-bridgebidirectional DC / DC converter is adopted on a battery side, so that the whole system has higher safety, the electric shock hazard for a user is reduced, and the conversion performance is efficient and stable.
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Description

technical field

[0001] The invention relates to the technical field of electric vehicles, in particular to an on-board bidirectional battery charger (On-board Bidirectional Battery Charger) for electric vehicles with multiple functions of power generation and charging. Background technique

[0002] With the increasing shortage of global petrochemical energy, new energy vehicle technologies represented by electric vehicles (Electrical Vehicle) and hybrid electric vehicles (Hybird Electrical Vehicle) are booming. The number of various types of electric vehicles and hybrid vehicles is not only increasing rapidly, but also the capacity of their energy storage power batteries is also increasing. In the current use of electric vehicles and hybrid electric vehicle batteries, people usually use charging equipment to extract electric energy from the grid to charge the battery when the electric energy of the power battery is about to run out. For example, people can choose to charge ...

Claims

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