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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-05-10 Hits: Popular:AG11 battery
What are the main functions of the 502030 battery thermal management system?
What are the main functions of the 502030 battery thermal management system? Because too high or too low temperature will directly affect the service life and performance of the 502030 battery, and may lead to safety problems of the battery system, and long-term uneven temperature field in the battery box. Distribution will cause imbalance in performance among battery modules and cells. Therefore, a battery thermal management system is necessary for electric vehicle 502030 battery systems. Reliable and efficient thermal management systems are of great significance to the reliable and safe application of electric vehicles.
1. Functions of 502030 battery thermal management system
Because temperatures that are too high or too low will directly affect the service life and performance of the 502030 battery, and may lead to safety issues in the battery system, and the long-term uneven distribution of the temperature field in the battery box will cause problems between battery modules and cells. Uneven performance, therefore, a battery thermal management system is necessary for electric vehicle 502030 battery systems. Reliable and efficient thermal management systems are of great significance to the reliable and safe application of electric vehicles.
The battery pack thermal management system has the following five main functions:
①Accurate measurement and monitoring of battery temperature.
② Effective heat dissipation and ventilation when the battery pack temperature is too high.
③Rapid heating under low temperature conditions.
④ Effective ventilation when harmful gases are generated.
⑤ Ensure the uniform distribution of the temperature field of the battery pack.
2. Basic methods of heat transfer within the battery
There are three main ways of heat transfer in the battery: heat conduction, convection heat transfer and radiation heat transfer.
The heat exchanged between the battery and the environment is also carried out through three methods: radiation, conduction and convection. Thermal radiation mainly occurs on the battery surface and is related to the properties of the battery surface material.
Thermal conduction refers to the heat transfer caused by direct contact between a substance and an object. The electrodes, electrolytes, current collectors, etc. inside the battery are all heat conduction media. Taking the battery as a whole, the temperature of the interface layer between the battery and the environment and the environmental heat conduction properties determine the heat conduction in the environment.
Thermal convection refers to the exchange of heat on the battery surface through the flow of environmental media (generally fluid), which is also proportional to the temperature difference.
For the interior of a single cell, thermal radiation and thermal convection have little impact, and heat transfer is mainly determined by thermal conduction. The amount of heat absorbed by the battery itself is related to the specific heat capacity of its material. The greater the specific heat capacity, the more heat dissipation, and the smaller the temperature rise of the battery. If the heat dissipated is greater than or equal to the heat generated, the battery temperature will not rise. If the heat dissipated is less than the heat generated, the heat will accumulate in the battery body and the battery temperature will rise.
3. Battery pack thermal management system
Design and implementation According to the heat transfer medium, the battery pack thermal management system can be divided into three types: air cooling, liquid cooling and phase change material cooling. Considering issues such as material development and manufacturing costs, the most effective and commonly used heat dissipation system currently uses air as the heat dissipation medium. According to the structure of the cooling air duct, the air cooling system can be divided into two types: serial ventilation and parallel ventilation, as shown in Figure 4-16 and Figure 4-17.
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