New energy automobile charging system and working method thereof
A new energy vehicle and charging system technology, applied in the field of new energy vehicle charging system, can solve the problems of low output power, difficult to meet the emergency operation of vehicles, long cruising range, long charging time, etc., and achieves high utilization rate of power devices and energy saving The effect of charging time and improving charging efficiency
Pending Publication Date: 2022-05-10
HARBIN UNIV OF SCI & TECH
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Problems solved by technology
At present, most chargers mainly work under single-phase input conditions, with low output power and long charging time, which is difficult to meet the needs of emergency operation and long cruising range of vehicles.
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[0031]Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0032] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and number of component...
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The invention discloses a new energy automobile charging system and a working method thereof, and relates to the field of electric automobile charging. The problems that in the prior art, an electric vehicle charging system is low in charging efficiency, single in working mode and low in power density are solved. An input unit comprises a direct current transmission circuit, an alternating current transmission circuit and a vehicle-mounted wireless electric energy transmission circuit. The energy conversion unit comprises a power factor correction circuit A, a direct current bus capacitor Cdc, a bidirectional CLLLC resonant converter, a maintenance capacitor Co, a hybrid energy storage circuit and a power battery which are connected in sequence, the alternating current transmission circuit is connected with the power factor correction circuit A, and the direct current transmission circuit is connected with the power battery through a switch KD; the power density of the electric vehicle energy storage system can be improved, and the service life of the power battery is prolonged.
Description
technical field [0001] The invention relates to the field of electric vehicle charging, in particular to a new energy vehicle charging system and a working method thereof. Background technique [0002] In order to save energy and reduce emissions, countries around the world have begun to develop electric vehicles that use clean energy. The power battery and charging technology of electric vehicles is one of the important links in the development of electric vehicles. The power battery is an energy storage device for electric vehicles. Its charging technology can be divided into wired charging technology and wireless charging technology. Wired charging technology can be realized through AC charging and DC charging; wireless charging technology can charge electric vehicles without relying on charging cables. The charging method of electric vehicles in the prior art usually adopts the charging method of 220V single-phase alternating current, which is converted into direct curr...
Claims
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IPC IPC(8): H02J7/10H02J7/35H02J50/10H02M1/42H02M3/155H02M3/335H02M7/5387B60L53/12B60L53/51B60L53/62
CPCH02J7/06H02J7/35H02J50/10H02M1/4233H02M3/155H02M3/3353H02M7/5387B60L53/12B60L53/51B60L53/62H02J2207/20Y02T10/70Y02T10/7072Y02T90/12Y02T90/14Y02T90/16
Inventor 周凯陈思敏
Owner HARBIN UNIV OF SCI & TECH