Efficient charge control device for battery electric vehicle and control strategy thereof
A pure electric vehicle and charging control technology, applied in battery/fuel cell control devices, electric vehicles, battery circuit devices, etc., can solve the problem of large difference between charging power and full load power, reduced charger efficiency, and extended charging time, etc. problem, achieve the effect of shortening charging time, saving charging time, and ensuring charging power
Pending Publication Date: 2019-06-07
海汇新能源汽车有限公司
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Problems solved by technology
[0004] At present, the battery management system (BMS) of pure electric vehicles controls the charging process to be constant current charging, and the final stage is to reduce the current and constant voltage charging. As the battery voltage continues to rise during the charging process, in order to ensure the entire constant current stage, the charging power is limited below the maximum power. The difference between the charging power at the low-voltage stage and the full-load power is large, prolonging the charging time, and the efficiency of the charger will also be reduced due to the non-full-load power, which further affects the energy consumption of the vehicle. Based on the above phenomenon, it is necessary to develop a new charging control device to solve the above problems
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[0036] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
[0037] Such as figure 1 and figure 2 As shown, the high-efficiency charging control device for pure electric vehicles includes a charging device 1, a charging interface 2, and a charger 3 (ie figure 2 OBC) and battery 4, the charging interface 2 is electrically connected between the charging device 1 and the charger 3, the charger 3 is electrically connected to the battery 4, and the battery 4 is connected to a batte...
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The present invention discloses an efficient charge control device for a battery electric vehicle. The efficient charge control device comprises a charging device, a charging interface, a charging machine and a battery. The charging machine and the battery are connected with a battery management system, the charging machine, the battery and the battery management system are arranged in the batteryelectric vehicle, the charging device is connected with an output current capacity collected device, the charging interface is connected with a withstanding current collected device, the output current capacity collected device and the withstanding current collected device are connected with the battery management system, and a conductor ground lead is arranged and communicates among the chargingdevice, the charging interface and the battery electric vehicle. The present invention further discloses a control strategy of an efficient charge control device for a battery electric vehicle. Whenthe battery is low in power and low in voltage, a large current is employed for charging, after the power is slowly increased and the voltage is increased, the charging current is gradually reduced toachieve the real-time variable current charging being similar to the constant power so as to ensure the maximum charging power, save the charging time and improve the charging energy conversion efficiency.
Description
technical field [0001] The invention relates to the technical field of high-efficiency charging for pure electric vehicles, in particular to a high-efficiency charging control device for pure electric vehicles, and also relates to a specific control strategy of the charging control device. Background technique [0002] A pure electric vehicle refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Pure electric vehicles have no internal combustion engine, so they will not produce exhaust gas or exhaust pollution when driving, which is very beneficial to environmental protection and air cleanliness, almost "zero pollution", and its prospects are widely optimistic. [0003] A pure electric vehicle is a vehicle powered entirely by secondary batteries (such as lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries or lithium-ion batteries, etc....
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IPC IPC(8): H02J7/00H01M10/42H01M10/44B60L58/13
CPCY02T10/70Y02E60/10
Inventor 魏代祥李芳仁何家海
Owner 海汇新能源汽车有限公司