1. What is a primary battery and a secondary battery
Primary batteries are ordinary dry batteries that can only be used once, and secondary batteries are also called rechargeable batteries. The power battery in the secondary battery is currently the main power source for Oil Electric Hybrid Sedan.
2. What is the difference between a primary battery and a secondary battery?
The electrochemical properties inside the battery determine whether this type of battery is rechargeable. According to their electrochemical composition and electrode structure, the reactions between the internal structures of real rechargeable batteries are reversible.
In theory, this reversibility is not affected by the number of cycles. Since charging and discharging will cause reversible changes in the volume and structure of the electrodes, the internal design of the rechargeable battery must support this change. Since, a primary battery only does Once discharged, its internal structure is much simpler and does not need to support this change.
Therefore, it is not allowed to charge the primary battery, which is dangerous and uneconomical. If you need to use it repeatedly, you should choose a rechargeable battery with a real cycle number of about 350 times. This battery can also be called a secondary battery. or battery.
Another obvious difference is their energy and load capacity, as well as self-discharge rate. The energy of secondary batteries is much higher than that of primary batteries, but their load capacity is relatively small.
3. How does the rechargeable battery realize its energy conversion
Each type of battery has the ability of electrochemical conversion, that is, the direct conversion of stored chemical energy into electrical energy.
In terms of secondary batteries (also called accumulators) (another term is also called rechargeable portable batteries), during the discharge process, chemical energy is converted into electrical energy; during charging, electrical energy is converted back into chemical energy .
According to different electrochemical systems, such a process can generally be charged and discharged more than 500 times.
4. What are the characteristics of batteries for electric bicycles?
The electric bicycle battery is a power battery, which is characterized by the ability to discharge a large current within a certain period of time, to run for a vehicle motor, and to maintain a certain mileage for a certain period of time
Vehicle power batteries are different from stationary batteries, such as instrument batteries, electric power, communication system batteries, starting batteries, etc., in terms of structure and performance, and their charging and discharging methods are also different, so they cannot be used universally.
5. How are electric bicycle batteries classified?
Generally speaking, batteries are divided into primary batteries, secondary batteries and fuel cells.
Vehicle batteries are divided into acidic and alkaline according to the nature of the electrolyte, square and cylindrical according to the shape, mobile and fixed according to the nature of use, power type, starting type and ordinary type according to the purpose, and divided into For open and sealed.