Electric automobile multi-function vehicle-mounted charging circuit
An on-board charging and electric vehicle technology, which is applied to electric vehicles, battery circuit devices, circuit devices, etc., can solve the problems of increasing the volume and weight of electric vehicles and high cost, and achieve the effect of increasing charging power and realizing high-power on-board charging.
Inactive Publication Date: 2014-03-19
LG ELECTRONICS CHINA RANDD CENT SHANGHAI CO LTD
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In this way, the volume and weight of the electric vehicle will be increased, and the cost will be higher
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0037] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0038] see figure 2 As shown, the multifunctional on-board charging circuit for an electric vehicle according to the embodiment of the present invention includes an input filter circuit, a three-phase rectifier bridge, a Buck / Boost circuit and a three-phase bridge inverter circuit connected in sequence. The output terminal of the Buck / Boost circuit is connected to the midpoint Am of one of the bridge arms A of the three-phase bridge inverter circuit....
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The invention provides an electric automobile multi-function vehicle-mounted charging circuit. The electric automobile multi-function vehicle-mounted charging circuit comprises an input filtering circuit, a three-phase rectification bridge, a Buck / Boost circuit, a stator winding of a three-phase motor of an electric automobile, and a three-phase bridge type inversion circuit which are successively connected. The output end of the Buck / Boost circuit is connected with a central point of one of the legs of the three-phase bridge type inversion circuit. The Buck / Boost circuit and the three-phase bridge type inversion circuit are used for receiving driving signals for changing working state of itself so as to control the vehicle-mounted charging circuit to be at a vehicle-mounted charging mode, a portable AC power mode or a motor driving inversion mode. The electric automobile multi-function vehicle-mounted charging circuit realizes integration of three functions, i.e., vehicular-mounted charging of the electric automobile, a portable AC power source and motor driving inversion, so that the size, weight and cost of the electric automobile in realizing the above three functions are reduced, and at the same time large-power vehicular-mounted charging can be realized.
Description
technical field [0001] The invention relates to the technical field of electric energy conversion of electric vehicles, in particular to a multifunctional vehicle-mounted charging circuit for electric vehicles. Background technique [0002] The electric vehicle charger is a key component to provide energy for electric vehicles, and realizing the fast and safe charging of the battery of electric vehicles by the on-board charger is a key problem that must be solved before electric vehicles are put into the market. Such as figure 1 Shown is the block diagram of a typical electric vehicle charger. It includes a DSP controller and an input filter circuit connected in sequence, a DC / AC converter, a DC bus capacitor, a DC / DC converter and an output filter, and the DSP controller is used for the work of the entire device. [0003] In addition, it is also a new development trend for electric vehicle chargers to provide portable AC power (such as AC220V) output by electric vehicles ...
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Login to View More IPC IPC(8): H02J7/00H02J7/10
Inventor 王议锋王成山李微张轶强
Owner LG ELECTRONICS CHINA RANDD CENT SHANGHAI CO LTD