Super capacitor starting device and control method thereof

Abstract

The invention discloses a super capacitor starting device and a control method thereof. The problems that a storage battery lacks electricity when a vehicle is stored for a long time due to large leakage current of a super capacitor in a starting device, the energy conversion efficiency in the charging process is low, and reverse power supply cannot be achieved are solved. The super capacitor starting device comprises a storage battery, a DC / DC module and a super capacitor which are connected in sequence. The starting device further comprises a bidirectional electronic switch and a control module, wherein one end of the bidirectional electronic switch is connected with the storage battery; the other end of the bidirectional electronic switch is connected with the super capacitor; and the control module is used for acquiring voltage, current and temperature information of the storage battery and the super capacitor and controlling the on-off of the bidirectional electronic switch and the DC / DC module and the conduction direction of the bidirectional electronic switch. Constant-current and voltage-limiting charging of the super capacitor can be achieved, the super capacitor achieves large-current and high-power output, starting of an internal combustion engine of an automobile is met, and meanwhile, the super capacitor can reversely provide transient voltage supporting power supply for sensitive loads of the whole automobile.

Description

Technical field[0001]The present invention relates to the field of supercapacitor to initiate an internal combustion engine, and more particularly to a supercapacitor startup device and a control method thereof.Background technique[0002]The supercapacitor is widely used in the fields of rail transit, port machinery, petroleum machinery, special equipment, wind power generation as a new type of energy storage device. The super capacitor is a new type of energy storage device with super storage capacity. Compared with the traditional battery, it has a high degree of reversible and long life (can be repeated, the discharge is 100,000), the output, the input power is large, with very The wide voltage range and operating temperature range are characterized. Compared to the traditional electrolytic capacitor, its energy density is taline from a thousand times, while the leakage current is a few quantities. It has high energy storage features of the battery and high power output characteri...

AI Technical Summary

Problems solved by technology

[0006] The invention mainly solves the problem that the leakage current of the supercapacitor in the prior art will cause the storage battery of the vehicle to lose power for a long time, the energy conversion efficiency in the charging process is low, and the reverse power supply cannot be realized; it provides a supercapacitor starting device and its control method, It can realize constant current and limited voltage fast charging of supercapacitors. A fully charged supercapacitor can achieve high current and high power output to meet the start-up of automotive internal combustion engines. At the same time, supercapacitors can also reversely provide transient voltage support for sensitive loads in the vehicle.

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