Air conditioning temperature control system and control method based on temperature difference of energy storage battery

Abstract

The invention relates to the technical field of energy storage, in particular to an energy storage battery temperature difference-based air conditioner temperature control system and a control method.An air conditioner is used for effectively refrigerating and cooling, the temperature of a single battery can be effectively adjusted in real time, the problem of non-uniform temperature distributionafter a plurality of single batteries runs for a long time is solved, the abnormal condition of system running is reduced, the service lifetime of an energy storage system is prolonged, the temperature of the single battery is used as a feedback point of temperature adjustment of the air conditioner, and the problem of temperature control lag is prevented.

Description

technical field [0001] The invention relates to the field of energy storage technology, in particular to an air conditioner temperature control system and control method based on temperature differences of energy storage batteries. Background technique [0002] The thermal management of existing energy storage systems mostly adopts fan control. If the system is charged and discharged with high power, the cooling capacity of the fan is poor and cannot effectively reduce the battery temperature in a timely manner. If the system works in a cold area, the fan control method has no heating function. The entire system will work in an unsuitable temperature range, and the battery will work in an unsuitable temperature range for a long time, which will greatly reduce the battery life and even cause abnormal system operation. [0003] The high-power energy storage system relies on the air conditioner itself for thermal management. In this way, the internal control of the air conditio...

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Problems solved by technology

[0002] The thermal management of existing energy storage systems mostly adopts fan control. If the system is charged and discharged with high power, the cooling capacity of the fan is poor and cannot effectively reduce the battery temperature in a timely manner. If the system works in a cold area, the fan control method has no heating function. The whole system will work in an unsuitable temperature range, and the battery will work in an unsuitable temperature range for a long time, which will greatly reduce the battery life and even cause abnormal system operation

[0003] The high-power energy storage system relies on the air conditioner itself for thermal management. In this way, the internal control of the air conditioner is automatic. In the existing technology, the total average temperature of the container is calculated by collecting the temperature at the top and bottom of the container. By comparing the total average temperature with the first The first preset temperature and the second preset temperature are used to control the switching of the cooling, heating, and standby functions of the air conditioner. The temperature feedback point is the indoor ambient temperature, but the energy storage system focuses on the battery temperature, so there is a relative lag in temperature control. It cannot effectively solve the temperature difference of the battery, and there are problems such as low efficiency and affecting the normal operation of the system

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