Relevant knowledge of rechargeable battery and the difference from primary battery

Relevant knowledge of rechargeable battery and the difference from primary battery

Common rechargeable battery include: lithium-ion rechargeable battery, nickel-metal hydride battery, nickel-cadmium battery, lithium polymer lithium-ion battery, lead storage battery, etc. Lead-acid battery can be divided into two types: open-type lead-acid battery and fully enclosed lead-acid battery.

The common disadvantage of rechargeable battery is that the negative electrode generates gas during charging, and the gas surrounds the negative electrode, causing the electrons to not reach the negative electrode for electrochemical reaction. This not only affects the charging efficiency, but also causes the electrode plate to become hot, and the electrolyte evaporates and dries, causing the concentration to change. The water in the electrolyte of lead-acid battery evaporates and becomes thicker, which will accelerate the vulcanization of the electrode plates, reduce the charging efficiency, reduce the capacity, and finally cause the battery to be damaged or even scrapped.

All battery should not be over-discharged. Over-discharging will cause the battery to shorten its life. The battery discharge should not be lower than the discharge termination voltage.

The difference between primary battery and rechargeable battery

①From the structural point of view, the rechargeable battery can be recharged to regenerate the active material after discharge. When discharging, it converts chemical energy into electrical energy and a reversible process occurs. However, the electrolyte of the chemical power supply device inside the primary battery is a kind of non-flowable electrolyte. Paste, no need to adjust the reversibility change.

②The quality of the primary battery will be better under the conditions of low current and intermittent discharge for ordinary rechargeable battery and primary battery, but when the discharge current is greater than 800mAh, the capacity advantage of primary battery will be significantly reduced. In addition, the internal resistance of the primary battery will be much larger, and its high-current discharge performance and load capacity are relatively poor.

③The self-discharge of the rechargeable battery will be much larger than that of the original battery. The original battery can only be used once when it is discharged. For example, alkaline battery and carbon battery fall into this category, and rechargeable battery can be recycled.

④Rechargeable battery are relatively more environmentally friendly. The original battery must be discarded after one use, while the rechargeable battery can be used multiple times. The next-generation rechargeable battery that meets the national standard can usually be recycled 1000 times+, which means that the waste generated by the rechargeable battery is less than 1000 parts of the original battery. 1.

Relevant knowledge of rechargeable batteries and the difference from primary batteries
Relevant knowledge of rechargeable battery and the difference from primary battery

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