Diesel engine starting device and control method thereof

Abstract

The invention relates to a diesel engine starting device which comprises a storage battery, an energy storage capacitor and a control system. The system comprises a starting control module, a temperature sensor, a circuit, a preheating module and a boosting module. At least three contactors are arranged on the circuit, and the starting control module starts the preheating module, the energy storage capacitor and the storage battery to work by controlling the contactors on the circuit; the starting control module is electrically connected with the temperature sensor and receives collected temperature signals. According to the device, the electric energy of the storage battery is boosted and stored in the energy storage capacitor, the diesel engine is started through the energy storage capacitor to bear a part of load with the maximum starting impact, and when the voltage of the energy storage capacitor is reduced to be the same as that of the storage battery, the storage battery is connected to be output with the energy storage capacitor in parallel, so that the voltage utilization rate can be increased; the problem that the voltage of the storage battery is low in a low-temperature state is solved, the service life of the device can be effectively prolonged, and voltage drop is reduced.

Description

technical field [0001] The invention relates to the technical field of power supply and power system, in particular to a diesel engine starting device and a control method thereof. Background technique [0002] At present, lead-acid batteries equipped with ground equipment chassis or top-mounted diesel generator sets have the problems of reduced discharge performance and low cut-off voltage at low temperatures. At the same time, the viscosity of engine oil increases at low temperatures, making it difficult for diesel engines to start. [0003] Energy storage capacitors and batteries have strong complementarities, especially supercapacitors, which are especially suitable for high-power, frequent charging and discharging occasions; the combination of supercapacitors and batteries can give full play to their respective advantages to achieve high power, high Energy provided by electricity. [0004] In the prior art, directly connecting the energy storage capacitor and the batte...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, directly connecting the energy storage capacitor and the battery in parallel can slightly improve the high-rate discharge capability at low temperature and improve the success rate of starting the diesel engine. However, this design has the problems of large leakage current and low discharge voltage in the non-working state. ; so it is urgent to find a way to solve the defects of energy storage capacitor and battery parallel power supply, and better play the advantages of the combination of the two

Images