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Will low temperature affect lithium battery life? What are the requirements of lithium battery for battery management system?

May 31, 2023

Low temperature will affect the life of lithium battery. The electrode materials of lithium-ion batteries have reduced activity at low temperatures, increased resistance, reduced electrochemical reaction rates, reduced battery capacity, and reduced charge and discharge efficiency, thereby affecting the life of lithium batteries.

For the battery management system, lithium batteries have the following requirements:

Battery pressure control: Once the battery voltage exceeds its rated voltage range, it will cause problems such as battery overcharge, heat generation, failure or safety accidents.

Current control: The charging current and discharging current of the battery need to be strictly controlled within a safe range to ensure the normal use and maximum life of the battery.

Battery temperature control: The battery will have different performance and life performance at different temperatures. Therefore, it is necessary to manage the temperature of the battery and keep it within a suitable operating temperature range.

Battery status monitoring: The battery management system needs to be able to monitor the status and information of the battery in real time, so as to detect and solve problems in time and provide support for relevant decisions.

Battery safety control: The battery management system needs to adopt protective measures and safety controls to prevent the occurrence of battery overcharge, overdischarge, short circuit, overtemperature, etc., so as to ensure the personal safety of users.

In short, the battery management system plays an important role in guaranteeing the long-term stability and safety of lithium batteries, and battery management strategies and technologies should be formulated reasonably according to different types and conditions of use of lithium batteries.

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