Introduction to basic knowledge of battery maintenance

1. What are the differences between primary batteries and rechargeable batteries? The internal electrochemistry of the battery determines whether this type of battery is rechargeable. According to their electrochemical composition and the structure of the electrode, it can be known that the reaction between the internal structure of a real rechargeable battery is reversible. In theory, this reversibility will not be affected by the number of cycles. Since charging and discharging will cause reversible changes in the volume and structure of the electrode, the internal design of the rechargeable battery must support this change. Since the primary battery only does Once discharged, its internal structure is much simpler and does not support this change. Therefore, it is not possible to charge a battery. This method is very dangerous and uneconomical. If you want to use it repeatedly, you can choose to recharge the battery. This kind of battery It can also be called a primary battery or accumulator. 2. Is there any other difference between primary battery and secondary battery? The 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. What are the advantages and disadvantages of rechargeable portable batteries? The rechargeable battery has a long life and can be cycled for more than 300 times. Although the price is more expensive than that of a dry battery, it is more cost-effective if it is used frequently. The capacity of rechargeable batteries is lower than that of alkaline manganese batteries or zinc-carbon batteries of the same specification, for example, they discharge faster. Another disadvantage is that due to their almost constant discharge voltage, it is difficult to predict when the discharge will end. When the discharge is over, the battery voltage will drop suddenly. If it is used on the camera, the battery has to be terminated when the battery is discharged suddenly. But on the other hand, the capacity that can be supplied by rechargeable batteries is higher than that of some primary batteries. However, Li-ion batteries can be widely used in photographic equipment because of their high capacity, high energy density, and gradually decreasing discharge voltage as the depth of discharge increases. 4. How does the rechargeable battery realize its energy conversion? Each battery has the ability of electrochemical conversion, that is, the stored chemical energy is directly converted into electric energy. In terms of secondary electrons (also called accumulators) (also called rechargeable portable batteries), in the process of discharging , Is to convert chemical energy into electrical energy; and in the charging process, the electrical energy is converted into chemical energy again. Depending on the electrochemical system, this process can generally be charged and discharged more than 300 times, while our product li-ion can be charged and discharged more than 500 times. Li-ion is a new type of rechargeable portable battery. Its rated voltage is 3.7V, and its discharge voltage will gradually decline with the depth of discharge. Unlike other rechargeable batteries, the voltage drops suddenly before discharge. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of lithium battery processing and procedures