Column rechargeable battery

　　Thermal management system is of great significance to improving the overall performance of the Column rechargeable battery pack

　　Thermal management system is of great significance to improving the overall performance of the Column rechargeable battery pack. With the development of new energy vehicle technology, safety is increasingly valued. Power lithium batteries can easily cause chain exothermic reactions resulting in thermal runaway, smoke, fire or even explosion when overcharged, punctured, or crashed. At the same time, the performance of power batteries, including energy density and service life, are affected by temperature changes, so the importance of the thermal management system is further reflected.

　　Thermal management system is of great significance to improving the overall performance of the Column rechargeable battery pack

　　Temperature is a key factor restricting the performance improvement of electric vehicles. High temperature has a dual impact on power batteries. On the one hand, as the temperature rises, the activity of the electrolyte increases, the ion diffusion speed accelerates, the internal resistance of the Column rechargeable battery decreases, and the Column rechargeable battery performance is improved; on the other hand, higher temperatures can lead to harmful reactions such as electrode degradation and electrolyte decomposition, affecting The service life of the Column rechargeable battery may even cause permanent damage to the internal structure of the battery.

　　As the main energy storage device loaded with Column rechargeable battery packs on electric vehicles, the Column rechargeable battery pack is a key component of electric vehicles and directly affects the performance of electric vehicles. As an automotive component, the electric vehicle Column rechargeable battery management system must also meet the specifications and requirements of the automobile factory: compact, lightweight, low-cost, easy to install, and suitable for the special needs of different models and installation locations, reliable and easy to use.

　　The goal of the Column rechargeable battery thermal management system is to provide a reasonable and uniform working environment temperature for the Column rechargeable battery module. The Column rechargeable battery thermal management system also needs to consider waste heat utilization, adapt to a wide range of environmental conditions, and provide ventilation when the Column rechargeable battery is damaged and produces harmful gases.

　　Thermal Management System Composition

　　The Column rechargeable battery thermal management system is a management system used to ensure that the Column rechargeable battery system operates within a suitable temperature range from the user's perspective. It is mainly composed of heat-conducting media, measurement and control units, and temperature control equipment. After the heat-conducting medium comes into contact with the Column rechargeable battery pack, the heat generated in the Column rechargeable battery system is dissipated to the external environment through the flow of the medium. The heat-conducting medium mainly includes three categories: air, liquid and phase change materials.

　　The measurement and control unit controls the temperature control equipment to perform corresponding heat treatment by measuring the real-time temperatures at different locations of the Column rechargeable battery system, Column rechargeable battery modules and even cells. Common temperature control equipment includes fans and pumps.

　　The main functions of the Column rechargeable battery thermal management system: (1) Accurate measurement and monitoring of Column rechargeable battery temperature; (2) Effective heat dissipation and ventilation when the Column rechargeable battery pack temperature is too high; (3) Rapid heating under low temperature conditions so that the Column rechargeable battery pack can work normally ; (4) Effective ventilation when harmful gases are generated; (5) Ensure the uniform distribution of the temperature field of the Column rechargeable battery pack.

　　According to the geometry and number of batteries, combined with the effective space for loading batteries on the vehicle, the placement of batteries is initially determined based on the principle of conducive to heat dissipation. Generally, pure electric vehicles require a large number of batteries, and the Column rechargeable battery pack generates a large amount of heat. However, due to limited space, it is generally placed on the vehicle floor, which is greatly affected by ambient temperature and requires more effective thermal management.

　　Thermal management systems can improve the performance and life cycle of Column rechargeable battery packs, which is very meaningful for reducing the cost of electric vehicles. Generally, one or more steps may need to be skipped or one or more steps may need to be performed due to factors such as project time or budget. However, designing according to reasonable and orderly steps can more effectively design a reasonable thermal management system, reduce the design cycle, and avoid unnecessary duplication of work.

　　As new energy vehicles begin to be used on a large scale, the performance of Column rechargeable battery systems will undergo more tests. Judging from the current situation, solving the above problems requires the optimization of Column rechargeable battery design systems in combination with new materials. Optimization of system structure layout and control strategies are all possible methods. Efficient and intelligent thermal management systems will be the goal of future development and are of great significance to the safety of new energy vehicles.

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