Power supply control method and related components thereof

Abstract

The invention discloses a power supply control method and related components thereof. In the scheme, if the number of battery packs is multiple and the current required by a load is greater than a preset current, each battery pack is controlled to output an average current which is obtained by dividing the current required by the load by the number of the battery packs; power supply for the load is ensured, and the output current of the single battery pack is relatively weak, so that the problems that the output current of the battery pack is too large, the temperature of the battery pack rises and the service life of the battery pack is shortened in order to ensure the power supply for the load when only one battery pack is used for supplying power are overcome. It can be seen that the current needed by the load is equally divided through the battery packs with the output ends connected in parallel, power supply to the load is guaranteed, it is also guaranteed that the output current of each battery pack is not too large, the battery packs work normally, and the power supply efficiency is guaranteed.

Description

technical field [0001] The invention relates to the field of power supply control, in particular to a power supply control method and related components. Background technique [0002] Power tools in the prior art, such as electric lawn mowers or electric snowplows, have the technology of using more than two power supplies in parallel, and each power supply is usually a battery pack, and the battery pack can be a lead-acid battery pack, but more Many are lithium-ion battery packs. For example, the traditional lithium battery pack lawn mower adopts dual battery pack technology, which is powered by one battery pack first, and then switches to the other battery pack when the voltage of the battery pack is lower than the undervoltage protection value, until the other battery pack The voltage also drops to the undervoltage protection value and stops supplying power. However, when the power of the load is large, the battery pack needs to output a large current to ensure the norma...

AI Technical Summary

Problems solved by technology

However, when the power of the load is large, the battery pack needs to output a large current to ensure the normal operation of the load, and when the current output by the battery pack is too large, it may cause the temperature of the battery pack cells to exceed the normal operating temperature. temperature, the shutdown of the battery pack due to over-temperature protection will shorten the power supply time, shorten the service life of the battery cells of the battery pack, and lead to problems such as low capacity utilization of the battery pack, resulting in an increase in cost and a decrease in work efficiency

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