13

2023

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07

New energy vehicle batteries (maintenance)

Classification:


【概要描述】It is strictly prohibited to store the battery in a state of low power. Low battery state refers to the failure to charge the battery in a timely manner after use. Storing batteries in a state of low power can easily lead to sulfation, where lead sulfate crystals adhere to the electrode plates, blocking the ion channels, resulting in insufficient charging and a decrease in battery capacity. The longer the idle time in a low power state, the more severe the battery damage. Therefore, when the battery is idle and not in use, it should be recharged once a month to better maintain the healthy maintenance status of the new energy vehicle battery.

It is strictly prohibited to lose power during storage

It is strictly prohibited to store the battery in a state of low power. Low battery state refers to the failure to charge the battery in a timely manner after use. Storing batteries in a state of low power can easily lead to sulfation, where lead sulfate crystals adhere to the electrode plates, blocking the ion channels, resulting in insufficient charging and a decrease in battery capacity. The longer the idle time in a low power state, the more severe the battery damage. Therefore, when the battery is idle and not in use, it should be recharged once a month to better maintain the healthy maintenance status of the new energy vehicle battery.

Regular inspection

During use, if the range of the electric vehicle suddenly decreases significantly in a short period of time, it is highly likely that there is a small number of batteries in the battery pack that experience short circuits such as broken grids, softened plates, or detachment of active substances from the plates. Therefore, it is necessary to promptly go to the battery repair agency for inspection, repair, or assembly. This can relatively extend the lifespan of the battery pack and greatly save costs.

Avoid high current discharge

During the use of new energy vehicles, try to avoid instantaneous high current discharge. High current discharge can easily lead to the formation of lead sulfate crystals, which can damage the physical properties of the battery plates.

Accurately grasp the charging time

During use, it is necessary to accurately grasp the charging time based on the actual situation, refer to the usual frequency of use and mileage, and also pay attention to the capacity specifications provided by the battery manufacturer, as well as the performance of the supporting charger, the size of the charging current, and other parameters to grasp the charging frequency. Generally, batteries are charged at night, with an average charging time of around 8 hours. If it is discharged shallowly (with a short driving distance after charging), the new energy vehicle battery will quickly become fully charged, and further charging will lead to overcharging, causing the battery to lose water and heat, reducing its lifespan. Therefore, it is better to charge the battery once at a discharge depth of 60% to 70%, which can be converted into cycling mileage during actual use. Necessary charging should be carried out according to the actual situation to avoid harmful charging.

Prevent exposure to sunlight

New energy vehicles are strictly prohibited from being exposed to sunlight. An excessively high temperature environment can increase the internal pressure of the battery, forcing the battery pressure limiting valve to automatically open. The direct consequence is an increase in the battery's water loss. Excessive water loss in the battery will inevitably lead to a decrease in battery activity, accelerate the softening of the electrode plate, and cause fatal damage such as shell heating, bulging, and deformation during charging.

Avoid plug heating

Looseness of the charger output plug, oxidation of the contact surface, and other phenomena can cause the charging plug to heat up. Prolonged heating time can lead to a short circuit in the charging plug, directly damaging the charger and causing unnecessary losses. So when the above situation is found, the oxide should be removed or the connector should be replaced in a timely manner.

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Characteristics of New Energy Vehicle Batteries

Lithium batteries are a general term for chemical power sources that use metallic lithium or lithium containing substances as negative electrodes. It is a new type of high specific energy battery system that has been developed in the past decade. The idea of using active metals such as lithium and sodium as negative electrodes for batteries was first proposed by a researcher born in 1958 at the University of California in the United States. In the 1970s, Yasuro Fukuda of Panasonic Electric Company in Japan first invented and applied lithium fluoride carbon batteries. From then on, lithium batteries gradually moved from experimental research to practicality and commercialization. Due to the excellent performance of lithium batteries, various countries are competing to develop various new types of lithium batteries to meet military and consumer needs, such as lithium iodine batteries (1972), lithium chromate batteries (1973), lithium sulfur dioxide batteries (1974), lithium sulfite chloride batteries (1974), lithium copper oxide batteries (1975), lithium manganese dioxide batteries (1976), lithium molybdenum disulfide batteries (1989), lithium-ion batteries (1991), and lithium manganese dioxide batteries (1994). Especially in the early 1990s, the high specific energy and long life lithium-ion batteries invented and launched by Sony Energy Technology in Japan greatly promoted the development of the lithium-ion battery industry.

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