Analysis of the relationship between the battery and temperature of an electronic truck scale
Recently, it was found that the sudden drop in temperature caused the battery to be fully charged and the battery was fully discharged. In this case, the relationship between the battery and the temperature is specifically described. If the battery is used in a low-temperature environment, ie, below 4°C, the same is also used. You will find that the battery life is reduced. Some original lithium batteries may not even be charged at low temperatures. But don't worry too much. This is just a temporary condition. Unlike the use in high temperature environment, once the temperature rises, the molecules in the battery get heated and they will immediately recover to the previous power. The higher the temperature, the faster the rate of movement of the anions and cations in the cell, the faster the rate of electron loss at the two electrodes, and the greater the current.
The case temperature of the Yangtze River Weighing Truck Scale case affects the internal resistance of the battery and discharges it at an ambient temperature of 0°C to 30°C. The internal resistance of the battery decreases as the temperature increases. Conversely, when the battery temperature decreases, the internal resistance of the battery gradually increases. The internal resistance and the temperature change linearly. Therefore, the battery discharge working temperature is in the range of 0°C to 30°C. The conductivity of the electrolyte is good. At the same time, the diffusion rate of hydrogen ions and sulfate ions in the electrolyte to the active material is also high, not only improving Concentration polarization effect, but also to improve the electrode reaction speed, and further improve the impact of electrochemical polarization, so the battery discharge increased.
When the ambient temperature drops below 0°C, the internal resistance increases by approximately 15% for each 10°C decrease in temperature, because the viscosity of the sulfuric acid solution increases, so the specific resistance of the sulfuric acid solution increases, and the effect of electrode polarization increases. Battery capacity It will be significantly reduced.
The effect of temperature on charge and discharge is repeated when the discharge and low-voltage constant-voltage charge are repeated. Since the battery initially has heat conduction, the temperature is not high. If the charge-discharge cycle is repeated, the temperature of the electrolyte will be very high.
If charged at low temperature, the diffusion current density is significantly reduced, and the exchange current density is not much reduced, so the concentration polarization is increased, which leads to a decrease in charging efficiency. On the other hand, the last discharge of lead sulfate at low temperature saturation The degree of resistance increases the charge and discharge resistance of the battery, thereby further reducing the charging efficiency.
If the battery is charged at an ambient temperature above 10°C, the polarization will be significantly reduced, the dissolution rate and solubility of lead sulfate will be increased, and the diffusion rate of oxygen will increase at higher temperatures. Battery charge and discharge efficiency increases.
The case temperature of the Yangtze River Weighing Truck Scale case affects the internal resistance of the battery and discharges it at an ambient temperature of 0°C to 30°C. The internal resistance of the battery decreases as the temperature increases. Conversely, when the battery temperature decreases, the internal resistance of the battery gradually increases. The internal resistance and the temperature change linearly. Therefore, the battery discharge working temperature is in the range of 0°C to 30°C. The conductivity of the electrolyte is good. At the same time, the diffusion rate of hydrogen ions and sulfate ions in the electrolyte to the active material is also high, not only improving Concentration polarization effect, but also to improve the electrode reaction speed, and further improve the impact of electrochemical polarization, so the battery discharge increased.
When the ambient temperature drops below 0°C, the internal resistance increases by approximately 15% for each 10°C decrease in temperature, because the viscosity of the sulfuric acid solution increases, so the specific resistance of the sulfuric acid solution increases, and the effect of electrode polarization increases. Battery capacity It will be significantly reduced.
The effect of temperature on charge and discharge is repeated when the discharge and low-voltage constant-voltage charge are repeated. Since the battery initially has heat conduction, the temperature is not high. If the charge-discharge cycle is repeated, the temperature of the electrolyte will be very high.
If charged at low temperature, the diffusion current density is significantly reduced, and the exchange current density is not much reduced, so the concentration polarization is increased, which leads to a decrease in charging efficiency. On the other hand, the last discharge of lead sulfate at low temperature saturation The degree of resistance increases the charge and discharge resistance of the battery, thereby further reducing the charging efficiency.
If the battery is charged at an ambient temperature above 10°C, the polarization will be significantly reduced, the dissolution rate and solubility of lead sulfate will be increased, and the diffusion rate of oxygen will increase at higher temperatures. Battery charge and discharge efficiency increases.
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