Compared with the start when the super capacitor is connected in parallel with the battery, the instantaneous voltage drop at start is increased from 3.2V to 7.2V when only the battery is used; the starting current is increased from 560A to 1200A; the instantaneous power output power is increased from 2kW to 8.7kW; the steady voltage during the starting process is increased from 7V to 9.4V; the steady current during the starting process is increased from 280A to 440A; the steady output power of the power supply during the starting process is increased from 2.44kW to 4.12kW.
The parallel application of super capacitors and batteries can improve the starting performance of locomotives. Parallel super capacitors (450F/16.2V) with 12V, 45Ah batteries to start a car with a 1.9-liter diesel engine will start smoothly at 10℃, although in this case, when the super capacitor is not connected, the battery can also be started, but the speed and performance of starting the motor when the super capacitor is connected in parallel with the battery are very good.
Due to the increase in the output power of the power supply, the starting speed has been increased from 300 rpm when the battery is only used to 450 rpm; especially in improving the starting performance of the car in cold weather (higher starting torque), the super capacitor is very meaningful, at -20℃, because the performance of the battery is greatly reduced, it is likely that it cannot start normally or requires multiple starts to succeed, and when the super capacitor is connected in parallel with the battery, only one ignition is required.
When the commercial supercapacitor is connected in parallel with the battery, the equivalent series resistance (ESR) of the super capacitor is much lower than the internal resistance of the battery. Therefore, the 800A of the 1200A starting current at the moment of starting is provided by the super capacitor, and the battery only provides 400A.
It is significantly lower than the 560A that only uses the battery, which effectively reduces the polarization of the battery plate, prevents the increase in the internal resistance of the battery, and improves the stable voltage during the start-up process. The most important thing is the reduction in the polarization of the battery plates, which not only helps to extend the service life of the battery, but also eliminates the impact of frequent starting on the battery life.
JINZHOU KAIMEI POWER CO.,LTD is a professional super capacitor manufacturer. For more information, please visit our website at http://www.kamcappower.com.
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