A super capacitor is a very large capacitor with a capacitance of up to thousands of farads. According to the principle of the capacitor, the capacitance depends on the distance between the electrodes and the surface area of the electrodes. In order to obtain such a large capacitance, it is necessary to reduce the distance between the electrodes of the supercapacitor as much as possible and increase the surface area of the electrodes. For this reason, the principle of electric double layer and the porous activated carbon are used electrode.
1. Improvement of electrical performance
When the super capacitor is connected in parallel with the battery, the instantaneous voltage drop at startup is increased from 3-2V when only the battery is used to 7.2V; the startup current is increased from 560A to 1200A; the instantaneous power supply output power at startup increases from 2kW to 8.7kW; the startup process is stable. The voltage 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 2.4kW to 4.12kW.
2. Improvement of startup performance
The parallel application of super capacitors and batteries can improve the starting performance of locomotives. A super capacitor (450F/16.2V) is connected in parallel with a 12V, 45Ah battery to start a car with a 1.9-liter diesel engine. Starts smoothly at 10°C. Although it can be started without connecting the super capacitor battery in this case, the speed and performance of starting the motor when the super capacitor is connected in parallel with the battery are very good. As the output power of the power supply increases. The starting speed is increased from 300r/m when using only the battery to 450r/m. The super capacitor can especially improve the starting performance of the car in cold weather (higher starting torque). At -20°C, because the performance of the battery is greatly reduced, it is likely to be difficult to start normally or requires multiple starts to ignite. However, when the super capacitor is connected in parallel with the battery, only one ignition is required, and its advantages are very obvious.
3. Improvement of battery application status
When the super capacitor is connected in parallel with the battery, since the equivalent series resistance (ESR) of the super capacitor is much lower than the internal resistance of the battery, at the moment of starting, 800A of the 1200A starting current is provided by the super capacitor. The battery only provides 400A of current, which is significantly lower than the 560A that only uses the battery, which effectively reduces the polarization of the battery plate, prevents the increase of the battery's internal resistance, and improves the smooth voltage during the start-up process. The most important thing is that the reduction of battery plate polarization is not only beneficial to prolong the service life of the battery, but also can eliminate the influence of frequent starting on the battery life.
JINZHOU KAIMEI has quality supercapacitor for sale, you can send a email to info@kamcap.com or dial at +86-18640666860 if interested.
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