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The influence of charge and diacharge controller rate on battery performance

(Summary description)The charge and discharge rate of the charge and diacharge controller determines how fast we can store a certain amount of energy in the battery, or how fast we can release the energy in the battery.

The influence of charge and diacharge controller rate on battery performance

(Summary description)The charge and discharge rate of the charge and diacharge controller determines how fast we can store a certain amount of energy in the battery, or how fast we can release the energy in the battery.

Information

The charge and discharge rate of the charge and diacharge controller determines how fast we can store a certain amount of energy in the battery, or how fast we can release the energy in the battery. The charge and discharge rate performance of the charge and diacharge controller is directly related to the migration ability of lithium ions at the positive and negative electrodes, electrolyte, and the interface between them. All factors that affect the migration speed of lithium ions (these influencing factors can also be equivalent to The internal resistance of the battery will affect the charge-discharge rate performance of the lithium-ion battery.

12V 24V charge and diacharge controller system

In addition, the heat dissipation rate inside the battery is also an important factor affecting the rate performance. If the heat dissipation rate is slow, the heat accumulated during high rate charging and discharging cannot be transferred out, which will seriously affect the safety and life of the lithium battery. Therefore, research and improvement of the charge and diacharge controller's charge-discharge rate performance mainly start from two aspects: improving the lithium ion migration speed and the heat dissipation rate inside the battery.

The ionic conductivity of the electrolyte, like the resistance of water, has a great influence on the speed of lithium ion swimming. At present, the organic electrolytes used in lithium-ion batteries, no matter whether it is a liquid electrolyte or a solid electrolyte, the ionic conductivity is not very high. The resistance of the electrolyte has become an important part of the overall battery resistance, and its impact on the high-rate performance of lithium batteries cannot be ignored.

In addition to improving the ionic conductivity of the electrolyte, it is also necessary to focus on the chemical stability and thermal stability of the electrolyte. When charging and discharging at a high rate, the electrochemical window of the battery has a very wide range. If the chemical stability of the electrolyte is not good, it is easy to oxidize and decompose on the surface of the positive electrode material, which will affect the ion conductivity of the charge and diacharge controller.

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