A kind of on-board charger for electric vehicle, charging method and electric vehicle
A vehicle-mounted charger and electric vehicle technology, applied in electric vehicle charging technology, electric vehicles, secondary battery charging/discharging, etc., can solve problems such as difficult implementation, difficult installation, and increased cost, and achieve compact internal space and easy installation , cost-saving effect
Active Publication Date: 2018-08-28
SHENZHEN KELIE TECH
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Problems solved by technology
The DC-DC fast charging conversion module is a newly added component of the current micro electric vehicle, but due to the compact internal space of the electric vehicle, it is difficult to install, and it also increases the cost. These problems make it difficult to realize this solution in practical applications.
Method used
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Embodiment Construction
[0025] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0026] refer to image 3 , in one embodiment, a vehicle-mounted charger for electric vehicles, including an AC charging module with an AC charging interface, the vehicle-mounted charger is also provided with a DC charging interface and a step-up DC-DC module, wherein the AC charging The DC bus behind the rectifier bridge inside the module is connected to the DC charging interface, and the DC charging interface is used to connect to an external DC fast charging pile for fast DC charging. The output terminal of the boost DC-DC module is connected to the The DC bus is used to make the DC charging interface have a predetermined high voltage to meet the polarity detection requirements between the DC fast charging pile and the DC charging interface.
[0027...
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The invention discloses an automobile-mounted charger for an electric automobile and the electric automobile. The automobile-mounted charger comprises an alternating-current charging module provided with an alternating-current charging interface and further comprises a direct-current charging interface and a boosting DC-DC module. A direct-current bus behind a rectifier bridge in the alternating-current charging module is connected with the direct-current charging interface. The direct-current charging interface is used for being connected to an external direct-current quick charging pile to conduct quick direct-current charging. The output end of the boosting DC-DC module is connected to the direct-current bus and used for making the direct-current charging interface have the preset high voltage to meet the polarity detection requirement between the direct-current quick charging pile and the direct-current charging interface. The invention further discloses a charging method for the automobile-mounted charger for the electric automobile. The automobile-mounted charger is compatible with slow alternating-current charging and quick direct-current charging, a DC-DC quick charging conversion module does not need to be additionally arranged, the inner space of the electric automobile is compact, installation is convenient, and meanwhile cost is saved.
Description
technical field [0001] The invention relates to a vehicle-mounted charger for an electric vehicle, a charging method and an electric vehicle with the vehicle-mounted charger. Background technique [0002] Micro electric vehicles are an important branch of electric vehicles in my country. The voltage platform of the battery pack of this type of electric vehicle is low (generally lower than 200V). Due to the low voltage platform of the battery pack, the cost of the whole vehicle is low, so this model is very popular in the market. Popular, but currently most micro electric vehicles cannot be connected to national standard fast charging piles, the main reason is that the voltage output range of national standard DC fast charging piles is generally 200V ~ 750V DC, which is higher than the charging platform of micro electric vehicles The voltage makes it impossible for micro electric vehicles to use DC fast charging piles. In fact, users can only use the on-board slow charger that...
Claims
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IPC IPC(8): B60L11/18H01M10/44H02J7/00H02J7/02H02J7/04
CPCB60L53/14H02J7/027H02J7/04H02J2207/40Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 张志国仝瑞军
Owner SHENZHEN KELIE TECH