Can supercapacitors replace car starting batteries?

Supercapacitors can be used instead of car starting batteries.

As a starting power supply for automobiles, supercapacitors have higher starting efficiency and reliability than traditional batteries, and can completely or partially replace traditional batteries.

Different from the traditional chemical power supply, it is a kind of power supply with special performance, which is between the traditional capacitor and battery. It mainly relies on electric double layer and redox virtual capacitor to store electric energy.

However, there is no chemical reaction in the energy storage process, and this energy storage process is reversible, precisely because this supercapacitor can be repeatedly charged and discharged hundreds of thousands of times. It has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and environmental protection.

Extended data:

Supercapacitors can be widely used in different application scenarios, such as auxiliary peak power supply, standby power supply, regenerative energy storage, alternative power supply and so on. , has a very broad development prospect in industrial control, wind power generation, transportation, intelligent instruments, power tools, military industry and other fields, especially in some application fields.

1, the earliest application of electronic equipment: for example, the memory system of our computer, the flash of camera, and the standby storage power supply of audio equipment.

2. In the automobile industry, the supercapacitor in plug-in hybrid electric vehicle mainly cooperates with the battery to form an intelligent start-stop control system.

(1) supercapacitor can quickly and efficiently absorb regenerative kinetic energy generated by electric vehicle braking;

(2) During acceleration and climbing, the supercapacitor provides electric energy for the motor of the intelligent start-stop control system, thus prolonging the service life of the battery.

3. Large-size supercapacitors can be used in braking systems of trains and subways, which can save energy by 30%.

Baidu encyclopedia-electric double layer capacitor

Phoenix Net-Ningbo new generation supercapacitor bus can last for 40 kilometers on a single charge.