Device and method for charging electric vehicle and electric vehicle
A technology of electric vehicles and charging power, applied in the field of transportation, can solve the problems of occupying the layout space of electric vehicles, increasing the difficulty of design, increasing the cost of electric vehicles, etc.
Active Publication Date: 2018-10-26
FAFA AUTOMOBILE (CHINA) CO LTD
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Problems solved by technology
However, according to the survey, DCDC equipment is generally used to add a booster device to electric vehicles. This design has the following disadvantages: 1. There are few mature products of this type of high-power DC DCDC equipment on the market; The cost of the car; 3. It is necessary to increase the corresponding cooling system, which makes the system design more complicated; 4. The weight of the electric vehicle is increased, which affects the driving range and efficiency of the electric vehicle; 5. The layout space of the electric vehicle is occupied, which increases the design difficulty
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[0038] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.
[0039] An aspect of an embodiment of the present invention provides a device for charging an electric vehicle. Wherein, the electric vehicle includes a motor, a motor controller and a battery pack. figure 1 It is a schematic diagram of the basic structure of an electric vehicle. Such as figure 1 As shown, the electric vehicle includes a motor 6 , a motor controller 7 and a battery pack 8 . The motor 6 includes three-phase stator coils, coil L1, coil L2, and coil L3, and the motor controller 7 includes three pairs of control switches, control switch Q1 and control switch Q2, con...
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The invention provides a device and method for charging an electric vehicle and the electric vehicle, and belongs to the field of transportation. The electric vehicle includes a motor, a motor controller and a battery pack. The device comprises a coil, at least one pair of control switches and a control module, wherein the coil is used for receiving charging power, and the control switches includefirst control switches and second control switches which are connected between the coil and the battery pack; the control switches are used for alternately conducting to feed the charging power received by the coil to the battery pack; and the control module is used for controlling the first control switches and the second control switches to be alternately conducted according to the current of the coil to feed the charging power received by the coil to the battery pack, wherein the coil is a stator coil within the motor, and / or at least one pair of the control switches is a pair of control switches within the motor controller. Therefore, the cost is greatly reduced when the electric vehicle is charged, the weight of the electric vehicle is reduced, the space of the electric vehicle is occupied less, and a cooling system does not need to be separately added.
Description
technical field [0001] The invention relates to the field of traffic, in particular to a device and method for charging an electric vehicle and the electric vehicle. Background technique [0002] With the popularity of new energy electric vehicles, the development of DC fast charging technology has become more and more important. As the driving range of electric vehicles gets farther and farther, the capacity of the power battery required is also increasing. In order to shorten the DC charging time, the current and power of the load required by the DC charging system will inevitably increase. . More and more vehicle systems are being designed for higher voltages, perhaps even 800V or higher. Since 300-400V electric vehicles currently on the market account for the vast majority, most of the DC charging facilities are 250V-500V DC charging piles. When an electric vehicle with a higher voltage system is charged with a 250V-500V DC charging pile, a voltage booster device is r...
Claims
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IPC IPC(8): B60L11/18
CPCB60L53/60B60L2210/14Y02T10/70Y02T90/12Y02T10/7072Y02T90/14
Inventor 袁建州傅振兴朱道平
Owner FAFA AUTOMOBILE (CHINA) CO LTD