Charging cabinet

Abstract

The invention discloses a charging cabinet characterized by low cost, good reliability and high charging efficiency. The charging cabinet is provided with at least one set of charging module. The charging module comprises a current limiting module (1), a rectifier bridge (2) and a charging socket (3). The current limiting module is composed of a plurality of capacitors (c). A contactor is used to control the output state of each capacitor (c). An alternating current entering from the input terminal of the charging module passes through the current limiting module (1), the rectifier bridge (2) and turns into a direct current which is outputted by a charging socket (3). The invention is used for charging power storage batteries on electric automobiles.

Description

technical field [0001] The invention relates to a charging cabinet for charging a power storage battery on an electric vehicle. Background technique [0002] At present, people's awareness of environmental protection is increasing, and they pay more and more attention to the protection of the environment and the effective and rational use of energy. The fuel consumption and exhaust emissions of traditional vehicles far exceed people's expected values. Therefore, electric vehicles, which are clean energy sources, will emerge at the right time, and will quickly replace and replace fuel vehicles with their advantages in energy saving and environmental protection. [0003] The power source of electric vehicles is the vehicle-mounted traction battery. Timely and fast replenishment of power to the traction battery is an urgent problem to be solved in the process of promoting the promotion and mass production of electric vehicles at this stage. To supplement electric energy for th...

AI Technical Summary

Problems solved by technology

For chargers equipped with power frequency transformers, they are bulky, bulky, use a large amount of copper, have high cost and low charging efficiency; and for chargers equipped with high frequency transformers, because of the small size of the high frequency inverter, The light-weight high-frequency magnetic core material greatly improves the power density of the circuit, making the no-load loss of the inverter power supply very small, and the inverter efficiency is improved. Usually, the peak conversion efficiency of high-frequency inverters reaches more than 90%, but It also has significant disadvantages: the high-frequency inverter cannot be connected to a full-load inductive load, and its overload capacity is poor. With the current technology, it is impossible to make a single power very large. To make a high-power charger, multiple sets must be connected in parallel. The use increases the complexity and cost of the equipment, the average failure rate of the equipment is high, and the reliability is poor

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