Direct-current direct-drive container battery pack temperature adjusting system

Abstract

The invention relates to a direct-current direct-drive container battery pack temperature adjusting system which comprises a heat exchange unit arranged on the outer wall of a container, an air outlet formed in the upper side of the inner wall of the container and an air return port formed in the lower side of the inner wall of the container, wherein the heat exchange unit comprises a heat exchange loop, a heat pump type compressor, a first heat exchanger, a drying filter, a filter, an electronic expansion valve and a second heat exchanger, the heat pump type compressor, the first heat exchanger, the drying filter, the filter, the electronic expansion valve and the second heat exchanger are sequentially arranged on the heat exchange loop, the air outlet is communicated with the heat exchange unit, the air return port is communicated with the heat exchange unit, air in the container is blown into the heat exchange unit from the air return port and is refrigerated by the heat exchange unit to blow out cold air to the air outlet, the cold air and hot air in the container are vertically alternated to form circulation, air valves are arranged above the front end and the rear end of the container, and closed refrigeration circulation or ventilation of the container can be achieved by adjusting the air valves. The direct-current direct-drive container battery pack temperature adjusting system has the following advantages that air circulation in the container is rapidly achieved, and the uniformity of temperature distribution is guaranteed.

Description

Technical field: [0001] The invention belongs to the field of new energy containers, and in particular relates to a direct-current direct-drive container battery group temperature regulation system. Background technique: [0002] With the rapid development of the new energy industry, container battery packs are widely used in energy storage, power station expansion, power station peak power regulation, electric ship power, mobile emergency power supply and other fields. Because it is usually exposed to the outdoors, its internal temperature and humidity are greatly affected by the outside world. As we all know, the discharge characteristics of batteries have a great relationship with temperature and humidity, especially lithium batteries. The optimal working environment temperature for lithium batteries is 25-28°C. If the temperature is too high, and the charging and discharging of the battery pack will release a lot of heat, it will affect the battery discharge performance...

AI Technical Summary

Problems solved by technology

Due to the conversion of the current form, there is a loss of electric energy; at the same time, the efficiency of the AC temperature adjustment equipment itself is not high, only about 60% at most, so the entire temperature adjustment system will consume a lot of power in the battery pack during the operation process, affecting the battery of the container Group endurance

[0005] 2: The interior of the container mostly adopts the direct blowing air supply mode. Due to the high space occupation rate of the battery inside the container, the direct blowing air direction is easily blocked, resulting in uneven temperature inside the container, which affects the normal operation of the container battery, especially when the temperature is high. In extreme cases, cooling or heating cannot be realized quickly, and the large space of the container cannot guarantee the uniformity of temperature

At present, the traditional container battery pack temperature adjustment system uses ordinary air-conditioning compressors, and the heating effect is not good, especially when the outdoor temperature is lower than 0°C, it is almost completely heated by electric heating

We know that the best heating effect of electric heating is 1:1, so the heating efficiency is low

It also needs to consume a lot of power storage, which affects the battery life of the container

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