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Thermal Interface Materials Battery

The electric vehicle market is booming and the issue of electric vehicle battery thermal management has become a key factor that must be addressed. Within the battery pack, heat is given off by both charging and discharging the battery. Keeping the battery pack within a reasonable temperature range can greatly improve the performance of the battery pack. This includes the two main concerns of drivers, operational efficiency, and charging speed.

Thankfully, the issue of battery thermal management has now been greatly developed, with great progress being made in battery range and fast charging modes. This includes the common liquid cooling of the battery pack as a whole and the cooling system between the electronic components. In this article, we will focus on thermal interface materials (TIM), which are used to dissipate heat between battery components.

Thermal Interface Materials Battery-EV Battery Cooling

How to use Thermal Interface Materials (TIM) in a battery pack module?

A battery pack module is made up of individual battery cells. In a battery pack thermal management system, the heat from the battery cells needs to be removed through a proper transfer path and then transferred out of the battery pack module through a liquid cooling system for cooling purposes.

Thermal Interface Materials (TIM) provide a good thermal path between the battery cells and are generally placed between the battery cells or used as a filler between the battery pack and the cooling plate. An additional advantage of TIM is its high dielectric strength, which effectively prevents conductivity problems between electronic components.

Trumonytechs offers several types of thermal interface materials (TIM), which include thermal conductive pad as well as solid/fluid compounds such as thermal conductive adhesives. Ideal for applications with a wide range of uneven and dynamic surface types. Provides maximum contact area for optimum thermal performance. Also provides a soft structural surface for effective protection of the battery cell.

Battery thermal interface material characteristics

As we all know, the new material used on the thermal management of new energy vehicle battery pack is mainly silicone Potting Glue, by filling around the electric cell with thermal conductive silicone potting adhesive, the heat generated by the electric cell is conducted to the battery plate, which also plays the role of fixing, shock absorption and bonding, and then the heat is conducted into the air through the battery plate. In addition, the battery plates used in the module section are often made of metal materials such as aluminium and alloys, which have high strength and thermal conductivity and can not only support the fixed battery pack and conduct internal heat in time to meet the heat dissipation requirements, but also prevent external sparks and combustible materials from entering the battery pack. However, no matter which thermal management method is used, the contribution of thermal conductive interface materials to the thermal management of the battery is indispensable.

Trumonytechs specialises in the development of thermal management materials for electric vehicles and energy storage systems and currently has core technologies such as nano-array technology, ultra-high thermal conductivity pad technology, ultra-soft thermal conductivity gasket technology and ultra-light thermal conductivity gel technology.

  • Thermal conductive pad have excellent thermal conductivity, insulation and compression resilience
  • Thermal conductive gel with excellent thermal conductivity, insulation and ultra-low surface stress
  • Potting Glue have excellent thermal conductivity, insulation and fluidity
  • Epoxy resin, polyurethane structural adhesive with excellent thermal conductivity, adhesion, weatherability, flexibility

Trumonytechs Thermal Interface Material Solutions for Electric Vehicle Batteries

Trumonytechs currently offers a range of silicone, epoxy and polyurethane products. Our thermal conductive pad, thermal conductive gels, potting adhesives and structural adhesives have excellent thermal conductivity, insulation, compression resilience, flexibility and more.

For example, our “thermal conductive silicone film”, which is widely used in new energy vehicle battery packs, is a thermal conductive media material made of silicone as a base material, with various auxiliary materials such as metal oxides, etc., synthesized through a special process. The heat of the battery cell is transferred to the liquid cooling tube through the heat-conductive silicone film, and the heat is carried away by the free circulation flow of the coolant thermal expansion and contraction, so that the temperature of the whole battery pack is uniform, and the strong specific heat capacity of the coolant absorbs the heat generated by the working of the battery cell, so that the whole battery pack operates at a safe temperature. The good insulation performance and high resilience of our thermally conductive silicone film can effectively avoid the problem of vibration and friction breakage between the cells, and the hidden danger of short circuit between the cells, making it the best auxiliary material for water cooling solutions.

With the advent of the 5G communication era of Internet of everything, devices and equipment are accelerating towards miniaturization, high performance, integration and multi-functional development, power density and heat generation continue to climb high. New energy applications, represented by electric vehicles and photovoltaic energy storage, are also evolving towards higher energy density and smaller module volumes. In the context of increasing power and compactness, there is an urgent need for efficient thermal management materials and solutions to ensure efficiency, reliability, safety, durability and continued stability of products.

Trumonytechs is committed to developing a new generation of transformative thermal management interface solutions to address the shortcomings of traditional thermally conductive interface materials, which are low in thermal conductivity, heavy in weight and prone to ageing.

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