BYD cold storage electric forklift lithium battery technology: analysis of operating performance in low temperature environment

The temperature of the low-temperature storage scene is maintained at 0 ° C to minus 30 ° C all year round, which puts forward higher requirements for the power system of the electric forklift, especially the battery performance. Lithium batteries used in ordinary electric forklifts often experience problems of reduced ionic activity and increased internal resistance in low temperature environments, which directly lead to battery life shrinkage, unstable power output, and even shorten the overall service life of the battery, making it difficult to meet the needs of continuous operation in cold storage.

The lithium battery technology optimized for low temperature scenarios first adjusts the battery material system. By optimizing the electrolyte formula, the viscosity of the electrolyte in the low temperature environment is reduced, the ion conduction efficiency is improved, and the power loss caused by low temperature is reduced. At the same time, an intelligent temperature control system is designed, and a temperature monitoring and adjustment module is set inside the battery pack. During the operation, the temperature of the battery cell is automatically maintained at a suitable working range to avoid the external low temperature directly affecting the performance of the battery cell. In addition, the protective structure of the battery pack is optimized, which can adapt to the humid and frost-prone environment in the cold storage, and reduce the erosion of water vapor on the battery components.

After actual scenario testing, the optimized lithium-ion forklift has a significant improvement in battery life retention compared to ordinary lithium-ion forklifts in a conventional cold storage environment of minus 20 ° C. It can meet the needs of continuous operation for 8 hours in a single shift, and there is no need to change power halfway. In terms of power output, the power output of lifting, climbing, starting and other operations in a low-temperature environment is stable, and there will be no problem of reduced operation efficiency caused by power attenuation. In terms of safety, there will be no abnormal situations such as liquid leakage and bulging under all working conditions, and the overall service life is significantly longer than that of ordinary lithium-ion forklifts.

This type of lithium-ion forklift suitable for low temperature can effectively reduce the operating cost of cold chain storage scenarios, reduce the time loss of power replacement and maintenance, improve the overall operating efficiency, and adapt to the current needs of most low-temperature storage scenarios.