All-weather vehicle network interaction system

Abstract

The invention discloses an all-weather vehicle network interaction system which comprises a two-way DC/DC module, a control unit, a direct current contactor, a molded case circuit breaker, a system power supply and other functional devices necessary for electric vehicle two-way charging equipment. In order to realize the function of the invention, an energy storage battery or other energy storage equipment, such as a super capacitor, needs to be arranged inside or outside the equipment. The energy storage battery is provided with a charging device and can be equipped with a PCS, a photovoltaic module, a wind generating set or other charging devices, and the system has the function of storing electric energy. The system can be equipped with an EMS to realize electric energy interaction management of the electric vehicle, the energy storage equipment, the power generation equipment and the alternating current power grid, and has a function of heating the battery of the electric vehicle. When the electric automobile is in severe environments such as low temperature and high altitude, the battery temperature can be rapidly increased, the charging time of the electric automobile in the low-temperature environment is shortened, and the problem of performance degradation of the power battery of the electric automobile in the low-temperature environment is relieved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to an all-climate vehicle-network interaction system. Background technique [0002] In winter, cold, high-altitude and low-temperature environments, because the characteristics of lithium batteries are attenuated in low-temperature environments, electric vehicles have problems of slow charging speed and low output power during use. Therefore, when electric vehicles are charged in a low temperature environment or output high power, the battery must first be heated, and the battery temperature reaches a certain value before high current charging and high power output can be performed. And the problem of long charging time in low temperature environment has been seriously affecting the user experience of end users. [0003] In the traditional solution, the battery pack heating solution generally supplies energy for the vehicle itself or from the electric vehicle char...

AI Technical Summary

Problems solved by technology

[0004] 1) External wrapping PTC resistance heating, adding heating nickel sheet heating inside the battery, large energy loss, high heat loss, low overall heating efficiency, and uneven heating of the battery

[0005] 2) The processing steps of batteries or vehicles are increased, which increases the difficulty of manufacturing to a certain extent

[0006] 3) All battery external heating methods will increase the cost of the vehicle and increase the weight of the vehicle body, which is not conducive to energy saving and consumption reduction

[0007] 4) Increased the risk of thermal runaway of the battery pack, etc.

[0008] There is an urgent need for a new method to solve the problem of rapid battery heating and performance degradation in low-temperature environments, increase the charging speed, increase the driving range of electric vehicles, and alleviate the charging anxiety of electric vehicle users in cold environments

[0009] In addition, the internal protection of the power module of the existing two-way charging equipment for electric vehicles is weak. When used in harsh environments such as high humidity, high dust, and high salt spray, the insulation performance will decrease exponentially with the increase in use time, and even internal short circuits will seriously affect EV Charging Safety

[0010] The existing electric vehicle DC charging equipment basically converts the AC power of the external AC power grid into DC power suitable for the needs of electric vehicles through the AC / DC power module. When using it, the power can only be transferred from the AC power grid to the electric vehicle.

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