What are the five main functions of the battery pack thermal management system?

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Drive motor and its control system

Battery thermal management system is a complete set of system used to ensure that the battery works within the appropriate temperature range from the perspective of users, including battery box, fan, heat transfer medium, monitoring equipment and other components. The thermal management system of battery pack has five main functions: accurate measurement and monitoring of … Read More “What are the five main functions of the battery pack thermal management system?” »

What are the SOC estimation methods?

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Automobile development and energy transition

The state of charge (SOC) of the battery describes the amount of remaining battery power and is one of the most important parameters during battery use. Since the SOC is affected by factors such as charge and discharge rate, temperature, self-discharge, and aging, the battery exhibits a high degree of nonlinearity during use, which brings … Read More “What are the SOC estimation methods?” »

What are the battery model applications?

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Automobile development and energy transition

The battery model describes the mathematical relationship between the influencing factors of the battery and its working characteristics. The factors considered are voltage, current, power, SOC, temperature, internal resistance, internal pressure, cycle times and self-discharge. A large number of research literature on battery models are synthesized , the battery model is divided into four types: … Read More “What are the battery model applications?” »

What is a battery management system for an electric auto?

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Automobile development and energy transition

1.Basic knowledge of battery management systemWhen using electric auto power battery, the battery must work within a reasonable voltage, current, and temperature range, so the use of power battery in electric autos needs to be effectively managed. Effective management is especially required for NiMH and Li-ion batteries. If not managed well, not only may the … Read More “What is a battery management system for an electric auto?” »

What is a lithium-air battery for electric autos?

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Automobile development and energy transition

A lithium-air battery is a battery that uses metallic lithium as the negative electrode and oxygen in the air as the positive electrode reactant. Discharge process: Lithium in the negative electrode releases electrons to become lithium ions (Li+), Li+ passes through the electrolyte material, combines with oxygen at the positive electrode and electrons flowing from … Read More “What is a lithium-air battery for electric autos?” »

What is a lithium-ion battery for electric autos?

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Automobile development and energy transition

(1) Working principle of lithium-ion batteryLithium ion battery is developed on the basis of secondary lithium battery. It solves the two technical problems of poor safety and short charging and discharging life of the secondary lithium battery in principle. The composition of a typical battery system is as follows: the positive and negative electrodes of … Read More “What is a lithium-ion battery for electric autos?” »

What is a NiMH battery for electric autos?

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Automobile development and energy transition

Nickel-metal hydride (Ni-MH) battery is an alkaline battery, and many of its basic characteristics are similar to nickel-pot (Ni-Cd) battery, but nickel-metal hydride battery does not have the problem of heavy metal pollution, so it is called “green battery”. In the 1970s, Philips of the Netherlands successfully used LaNi5 oxygen storage alloy to develop nickel-metal … Read More “What is a NiMH battery for electric autos?” »

What are lead-acid batteries for electric autos?

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Automobile development and energy transition

It has been more than 140 years since Plante invented the lead-acid battery in 1859. During this period, many breakthroughs have been made in the theory and technology of lead-acid batteries. Due to its low cost, wide adaptability, good reversibility, good high-current discharge performance, and can be made into a sealed maintenance-free structure, lead-acid batteries … Read More “What are lead-acid batteries for electric autos?” »