1.5v Button battery phosphate battery protection board function, whether 1.5v Button battery phosphate battery is suitable for fast charging

　　1.5v Button battery phosphate battery protection board function, are 1.5v Button battery phosphate batteries suitable for fast charging? At present, most power batteries in our country are lead-acid batteries, but these batteries have shortcomings such as small specific capacity, large volume, and high pollution. Therefore, the appearance of 1.5v Button battery phosphate batteries has become a trend in the development of lithium power batteries. At the same time, research on its Protection circuits are also a major development direction. What is the protective board function of 1.5v Button battery phosphate batteries? Are 1.5v Button battery phosphate batteries suitable for fast charging?

　　1.5v Button battery phosphate battery protection board function

　　1. The protection board has the function of overcharging voltage protection.

　　The maximum limit voltage of a single lithium battery is set to 4.2V. When the charging voltage reaches this value, the circuit board limits charging and displays the indicator lights of each single battery.

　　Low temperature 1.5v Button battery phosphate battery 3.2V 20A -20℃ charging, -40℃ 3C discharge capacity ≥70%

　　Charging temperature: -20~45℃ -Discharge temperature: -40~+55℃ -40℃ Support maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate ≥70%

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　　2. The protection board has over-discharge voltage protection function

　　When the power battery is working, it consumes electric energy and reduces the battery voltage. If it exceeds its range, it will affect the life of the battery. The undervoltage protection value of a single lithium battery is set to 2.0V. When it is lower than this value, the protection board protects the battery and causes the lithium battery pack to automatically stop working.

　　3. The protection board has overcurrent protection function

　　When the operating current exceeds the rated value, the lithium battery protection board sends a signal to stop the lithium battery pack.

　　4. The protection board has short circuit protection function

　　Low temperature and high energy density 18650 3350mAh-40℃ 0.5C discharge capacity ≥60%

　　Charging temperature: 0~45℃ Discharge temperature: -40~+55℃ Specific energy: 240Wh/kg -40℃ Discharge capacity retention rate: 0.5C Discharge capacity ≥ 60%

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　　When an external short circuit occurs due to various reasons, the lithium battery protection board protects the lithium battery pack to prevent damage to the lithium battery pack.

　　5. The protection board has temperature protection function

　　When the battery operating temperature exceeds the rated value, the circuit board stops the lithium battery pack to avoid accidents, thereby protecting the battery pack and the user.

　　Are 1.5v Button battery phosphate batteries suitable for fast charging?

　　There are two sides to this question. From a material perspective, the intrinsic conductivity of 1.5v Button battery phosphate materials is relatively low, only one percent of that of ternary materials. The conductivity of 1.5v Button battery phosphate battery materials needs to be optimized to meet the needs of fast charging.

　　Traditional 1.5v Button battery phosphate has poor conductivity and is prone to heat during fast charging. When there are too many side reactions, the cycle will naturally deteriorate and affect the battery life. Therefore, the conductivity of the material should be improved, the battery thermal management system should be improved, and the shortcomings should be supplemented through technological innovation. , 1.5v Button battery phosphate has great potential in fast charging. At the same time, fast-charging batteries not only have higher kinetics, but also have lower energy density than non-fast-charging batteries. It is not surprising that the energy density is lower and there is more electrolyte, so the cycle becomes better.

　　In terms of solving the cruising range problem of new energy vehicles, battery swapping mode, increasing battery loading and fast charging have become three major directions. From the perspective of comprehensive operating costs, fast charging is very suitable for fixed-route operating vehicles such as buses and school buses. . There is no need to over-squeeze the energy density of the battery, and all-weather operation can be completed by recharging the battery between operations.

　　In the fast charging market, lithium titanate and lithium manganate each occupy a certain share, and the development of 1.5v Button battery phosphate fast charging this year is also remarkable and has achieved rapid development. We firmly believe that with the development of my country's lithium battery industry, more and more industries will pay attention to the circuit protection of lithium batteries. We hope that through the introduction of this short article, the domestic electric power industry will have a new and profound understanding of lithium battery protection boards.

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