Jinzhou Kaimei Power Co., Ltd.
Jinzhou Kaimei Power Co., Ltd.
Do New Energy Vehicles Need Ultracapacitors?

Do New Energy Vehicles Need Ultracapacitors?

1. Ultracapacitors work on the same principle as batteries

When charging, the chemical reaction is generated by current, and the Li-ion which can react to generate electricity is transported in the "big way" of positive and negative electrodes, and then stored as chemical energy after being transported When discharging, the chemical reaction is activated, the current is generated by the movement of Li-ion, and the DC is supplied to motor, generating electromagnetic field to drive.

Ultracapacitors work on the same principle as batteries, but their characteristics have significant differences. First of all, the capacitor can only store a very small amount of electricity, while the battery can store a large amount of chemical energy. Secondly, the main function of capacitance is not energy storage, but coupling and filtering, decoupling and so on. The DC power supplied by the battery has fluctuation and signal interference. The fluctuation and interference can be filtered out by using ultracapacitor. Ultracapacitor is mainly used for high rate and rapid charge and discharge. In the vehicle, it is generally used as fuel vehicle starter, BSG integrated starter and generator, electric or hybrid vehicle charging module, etc.

Lithium battery is an ordinary chemical power supply, which is characterized by low charge and discharge rate. The ideal state is slow charge and low rate discharge, so as to ensure that there will be no large loss of active substances and electrolyte in lithium battery.

This is the difference between a battery and a ultracapacitor. Although it is possible to store enough energy for a ultracapacitor, the problem is that this design makes the capacitor a superbattery rather than a ultracapacitor; Because 220V electric power is used for electric vehicle charging, it still needs capacitor to filter during charging, so the capacitor will still exist in electric and hybrid vehicles. If it is different from this ordinary capacitor, what is the high-capacity capacitor that can charge and discharge at a high rate, instead of a battery?

2. Battery and ultracapacitor are two concepts of energy storage unit

If the ultracapacitor is over upgraded, it will lose its significance, and upgrading the capacitor or battery by technical means is interlinked, so upgrading the battery can also be understood as manufacturing the ultracapacitor. Currently, there is only one demand on pure ultracapacitors: kinetic energy recovery.

During the braking process of the vehicle, the reverse action of the electronic rotor and the magnetic field can be used to generate power. However, because the power battery can not be charged at a high rate, a large amount of kinetic energy is recovered and the power is wasted. If a ultracapacitor is added between the kinetic energy recovery system and the battery, the power recovered from the kinetic energy can be stored in a large amount to reduce waste. These power can be collected and stored to drive the vehicle, which can more effectively reduce power consumption and improve endurance.

At present, the only system that needs ultracapacitor for electric vehicles should only have kinetic energy recovery. Finally, the realization of overlength endurance or even unlimited endurance will never merely rely on the car itself, but rely on the means like wireless charging or similar to trolley bus connection charging, so that the vehicle can run as far as the journey. The upgrading direction of new energy vehicles should not be limited to power batteries, and the construction of hardware seems to be more important.

JINZHOU KAIMEI POWER CO.,LTD is a professional super capacitor manufacturer. For more information, please visit our website at http://www.kamcappower.com.