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I. Basic Concepts and Structure of Ternary Lithium Batteries

Ternary lithium batteries are a type of high-performance lithium-ion battery, possessing high energy density, long cycle life, and good safety performance. They are widely used in fields such as electric vehicles and energy storage systems. Ternary lithium batteries are composed of a positive electrode, a negative electrode, and an electrolyte. The main materials used for the positive electrode are lithium manganate, ternary materials, or lithium cobalt oxide.

II. Definition of Short-Circuit Current

Short-circuit current refers to the maximum output current of a battery in the case of extreme short circuit. Short-circuit current is usually used to describe the safety performance and output capacity of a battery.

III. Calculation Method of Short-Circuit Current for Ternary Lithium Batteries

The short-circuit current of a ternary lithium battery is related to the internal resistance of the battery and the maximum charge/discharge rate. The specific calculation method is as follows:

Firstly, the internal resistance of the battery needs to be measured. A digital multimeter or a battery internal resistance tester can be used for measurement.

Determine the maximum charge/discharge rate of the battery. The maximum charge/discharge rate refers to the maximum discharge current of the battery during the charging and discharging process.

Finally, use the following formula to calculate the short-circuit current of the ternary lithium battery:

Short-circuit current = Battery voltage / Battery internal resistance

For example, if the voltage of a ternary lithium battery is 3.7V, the internal resistance is 0.05 ohms, and the maximum charge/discharge rate is 5C, then the short-circuit current is:

Short-circuit current = 3.7V / 0.05 ohms = 74A

It should be noted that short-circuit current is a dangerous signal. Once a short circuit occurs, the level of the short-circuit current will directly affect the degree of damage to the battery. Therefore, in practical applications, measures must be taken to prevent the occurrence of short circuit accidents.

[Conclusion]

Ternary lithium batteries are high-performance batteries that can provide a high short-circuit current, but this also means that the battery may suffer significant damage in the event of a short circuit. Therefore, necessary safety measures must be taken in the production and use process to ensure the safety and stability of the battery. At the same time, correctly measuring the short-circuit current of the battery can help improve the efficiency and performance of the battery.

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