Lithium batteries refer to batteries in which the electrochemical system contains lithium (including metallic lithium, lithium alloys, lithium ions, and lithium polymers). Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium metal batteries are usually non-rechargeable and contain metallic lithium. Lithium-ion batteries do not contain metallic lithium and are rechargeable. 

The internal structure of lithium-ion batteries is mainly composed of positive electrode materials, negative electrode materials, electrode sheets, conductive bodies, separators, electrolytes, and other materials. Most of these materials require heating processes during production. Therefore, the exhaust gas emitted during the production process contains a large amount of heat energy that can be utilized, and direct discharge would result in energy waste.

AIR-ERV heat exchangers have a unique internal structure that efficiently utilizes the energy in the exhaust air to preheat the fresh air entering the drying box, significantly save the heating energy and increase the heating speed. Moreover, exhaust air and fresh air are separately without air leakage.

The breeding environment is a specific environment composed of factors such as indoor air temperature, humidity, light, airflow, sound, microorganisms and facilities. During the breeding production process, it needs to be artificially regulated and controlled to allow breeding animals to live in a microclimate environment that meets their physiological requirements and is conducive to maximizing production performance, thereby achieving high yields.

Currently, in livestock and poultry production, there is a contradiction between winter heat preservation energy consumption and ventilation exchange. To ensure an appropriate temperature inside the barn, livestock barns often choose to have little ventilation or no ventilation at all, which leads to high humidity inside the barn and high concentrations of harmful gases, causing frequent occurrences of respiratory and skin diseases in animals. If ventilation are carried out in the livestock barns, the heat inside the barns is quickly lost (especially in cold regions), not only increasing the cost of temperature regulation, but also causing more temperature fluctuations, which is more likely to cause diseases in livestock, especially affecting the survival rate of young animals.

Livestock barn heat recovery devices utilize the heat exchange between the exhaust gas emitted from the barn and the outdoor fresh air entering the barn. The exhaust gas emitted from the barn and the fresh air entering the barn flow separately in the heat exchange core, and exhaust gas transfers heat to the fresh air through the heat conduction effect in the heat exchange core, enabling the fresh air to be heated. 

The heat recovery ventilation equipment has been widely used as an energy saving ventilation method in civil buildings. Compared to civil buildings, livestock barns are places with high energy concentration. The heat generated by animals themselves, and other pathways generate a large amount of energy. At the same time, due to the production of large amount of harmful gases in livestock barns, the actual ventilation volume required for production is significantly higher than that of civil buildings. Therefore, heat recovery equipment has great value for use in livestock farming.