Phase Change Materials Are Sed In The Field Of Batteries (1)

The working principle of phase change materials:

1. Phase Change Materials (PCM) is a kind of substance that can absorb or release a large amount of latent heat through the phase change process. In the field of battery storage, PCM is mainly used for thermal management to maintain the stability of battery temperature by absorbing and releasing heat during the battery charging and discharging.
2. When the battery generates heat, PCM changes from solid to liquid and absorbs heat; when the battery needs heat, PCM changes from liquid to solid to release heat. This process helps to balance the battery temperature, extend battery life and improve performance.

Thermal physical properties of phase change materials:

--Thermal physical parameters are key indicators to evaluate the performance of PCM, including phase change temperature, phase change latent heat, specific heat capacity, thermal conductivity and density.

1.Phase change temperature

• refers to the temperature point at which PCM changes from solid to liquid or from liquid. For battery thermal management, it is crucial to choose the appropriate phase change temperature.

2.Phase change latent heat

• PCM absorbs or releases heat in the phase transformation process, and high latent heat PCM can store heat energy more effectively.

3.Thermal conductivity

• It affects the efficiency of heat transfer between PCM and the battery, and the high thermal conductivity contributes to rapid heat exchange.

Classification of phase-changing materials:

--PCM can be divided into different categories according to chemical composition and physical state, including organic, inorganic and ecological PCM.

1.Organic PCM

• Such as paraffin, fatty acids, etc., with high latent heat and low thermal conductivity.

2.Inorganic PCM

• Such as hydrated salt, it has a high thermal conductivity and small volume change, but it may be corrosive.

3.Ecological PCM

• Such as natural fat and vegetable oil, it is renewable and environmentally friendly.

4.Composite PCM

• It combines the advantages of different types of PCM, such as combining organic PCM with porous materials or microcapsules technology to improve its heat conduction performance and stability.

Thermal management requirements of batteries:

--Operating temperature range of the battery

1. The battery generates heat during the charging and discharging process, and its operating temperature range has a significant impact on the performance and life of the battery. The ideal working temperature range can ensure that the battery runs safely and efficiently.
2. Temperature range: The recommended operating temperature range for lithium-ion batteries is 0°C to 45°C. Within this range, the battery can maintain the best performance and cycle life.
3. Temperature impact: Low temperature will lead to a decrease in battery capacity and charging efficiency; too high temperature may cause the battery to overheat or even run out of control, affecting safety and life.

--The impact of thermal management on performance

1. Thermal management is a key factor to ensure the performance and life of the battery. Through effective thermal management, the battery temperature can be controlled to avoid extreme temperature causing damage to the battery.
2. Performance maintenance: Good thermal management can maintain the battery at the optimal operating temperature, thus maintaining the charging and discharging efficiency and output power of the battery.
3. Extended life: By controlling the battery temperature, it can slow down the aging process of the battery and extend the service life of the battery.
4. Safety guarantee: Preventing battery overheating is an important task of thermal management, which can avoid the occurrence of safety accidents such as thermal runaway.
5. Thermal management technology: including passive thermal management (such as the use of high thermal conductivity materials) and active thermal management (such as liquid cooling, air cooling, etc.), and choose the appropriate thermal management technology according to the specific needs of the battery system.

Company profile：

• Sichuan Aishipier New Material Technology Co., Ltd. (referred to as "Aishipeier"), formerly known as Chengdu Xinhai Huicai Biotechnology Co., Ltd. Its founder was involved in the research and development of cold and hot materials in 1997. The product temperature ranged from -70℃, -50℃, -40℃, -25℃, -18℃, -12℃, -5℃, 0℃, 5℃, 10℃, 18℃, 20℃, 28℃, 35℃, 50℃, 60℃, 70℃, 90℃, 110℃, 180℃. In the early years, the products were widely used in biological products, reagents, microorganisms, food, industry, fisheries, animal husbandry The cold preservation, cold storage and cold chain transportation industry of precision instruments are synchronized with the research and development of cold storage technology, cold chain verification, scheme formulation, temperature detection, etc.
• In 2013, the company extended its product application to the repeated use of energy storage materials and phase change materials; the product expanded to new energy, energy storage batteries, etc. in the original application field. In this link, it is used as battery viscosity, thickener, curing agent, adhesive, ultra-high adhesive, suspension agent, etc. After more than 10 years of technology precipitation. The company has a strict quality ISO9001 management system. The products have passed the testing: Shanghai Chemical Research Institute test report, national dangerous chemical test report, Swiss SGS content non-toxic safety test, REACH test report, ROHS test report, etc. With the joint efforts of all employees of the company, the products have been successfully sold to the United States, Germany, Ireland, Japan, South Korea, Russia, Saudi Arabia and other countries and regions.
• Our company can provide you with phase change materials for battery applications, please contact us.

Sichuan Ashpier New Material Technology Co., Ltd.

Tel: 028-67933699 84906988

Email: xhhc@xhhc.net

Website: http://www.xhhc.cn

Hotline: 400-6463-400