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Why does winter affect the use of lithium batteries

2023-04-17

The first major factor affecting temperature is that most electric scooters receive lithium batteries of model 18650. Among them, 18 implies a curved diameter of 18mm, 65 implies a length of 65mm, and 0 implies a cylindrical lithium battery temperature. Lithium battery temperature: fast science popularization | Why is the lithium battery not awesome in winter?
All lithium ions inside the lithium battery are retained to the positive electrode, while the negative electrode is composed of graphite (carbon) to form the temperature of the lithium battery. Between the positive and negative poles, there is an electrolyte and a separator. The discharge process of lithium batteries is the movement of lithium ions from the negative electrode to the positive electrode, and the discharge of lithium batteries provides the electric vehicle with the necessary electricity for operation.
Lithium battery temperature: fast science popularization | Why is the lithium battery not awesome in winter? When the temperature drops, the process of charging and discharging will slow down the temperature of the lithium battery. As a result, the discharge current decreases, and the capacity of the battery also decreases. The indicated working temperature for lithium batteries is 0-40 ℃.
But in fact, when the temperature is below 25 ℃, there will be a certain level of performance degradation: reduced battery capacity, slower discharge speed, and reduced battery output power. Lithium batteries can reach higher capacity values at 25 ℃, which is the test temperature for various range tests. In fact, due to the different materials and processes of lithium batteries, the data is slightly different.

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