With the rapid development of lithium ion battery in mobile devices and other fields, its low temperature performance can not adapt to special low temperature weather or extreme environment is becoming more and more obvious. Under low temperature conditions, the effective discharge capacity and effective discharge energy of lithium ion battery will decrease significantly. Meanwhile, it can hardly be rechargeable under -10℃, which seriously restricts the application of lithium ion battery.
The battery is most afraid of low temperature, in the low temperature environment battery capacity is lower than the normal temperature capacity, although now the battery is maintenance-free, especially in winter, the battery life of electric vehicles and other lithium intelligent equipment will be reduced accordingly, and the service life of lithium battery in the low temperature environment will be greatly shortened.
The effect of low temperature on batteries
1. When the temperature drops, the reaction rate of the electrode also drops. Assuming that the battery voltage remains constant and the discharge current decreases, the power output of the battery will also decrease.
2. Among all the environmental factors, temperature has the greatest influence on the charge-discharge performance of the battery. The electrochemical reaction at the electrode or electrolyte interface is related to the environmental temperature, and the electrode or electrolyte interface is regarded as the heart of the battery.
3. the temperature rises lithium polymer battery output power will rise;
4. the temperature also affects the transmission speed of the electrolyte, the temperature rises, the transmission temperature drops, the transmission slows down, the battery charging and discharging performance will also be affected. But too high a temperature, above 45 degrees Celsius, can upset the chemical balance in the battery and cause side effects.
It is also because of the impact of low temperature on the battery is particularly large, so many powerful battery manufacturers are developing low temperature batteries. At the same time as lithium battery downstream connector enterprises are also developing low temperature resistant battery terminals
As a provincial high-tech enterprise, Amass low-temperature resistant battery connector LC series is widely used in energy storage equipment, garden tools snowplowing, electric vehicles and other mobile intelligent equipment. Low temperature will make the plastic shell of the battery connector brittle, and the lower the embrittleness temperature, the better the low-temperature resistant performance of the plastic shell. Amass LC series low-temperature resistant battery connector adopts engineering plastic PBT, which can be used at a low temperature of -40℃. At this temperature, it can ensure that the plastic shell of the battery connector will not be embrittlement and fracture, and ensure good current-carrying performance of the battery connector.
LC series adopts copper conductor, which can still protect high plasticity at low temperature. The resistivity of the band decreases with the decrease of temperature, which can effectively ensure the characteristic advantages of low resistance and large current carrying of battery connectors.
LC series not only improves the electrical conductivity through copper, but also improves the contact structure. The crown spring inner contact, triple contact, anti-seismic and anti-sudden breaking during insertion, greatly improves the service life of lithium battery connector.
For details about battery connectors, see https://www.china-amass.net/
Post time: Mar-02-2023