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PI heating film low-temperature heating

Introduction to PI Heating Film: It is composed of two layers of polyimide film bonded through high-temperature hot pressing to form a resistive heating core. It has advantages such as good insulation, high temperature resistance, light weight, good flexibility, bendability of the heating film, good thermal conductivity, uniform heating, and long service life.

  • Structure: Polyimide film PI film, resistive heating element, polyimide film PI film, double-sided tape
  • Performance Introduction: Thermal Conductivity: ≥0.4 W/m·K, Flame Retardancy: Complies with UL 94 V-0 and GB/T 2408-2008 V-0
  • Temperature resistance: -40°C to 120°C, can withstand up to 150°C for a short period within 2 hours
  • Function: Paste on the side of the battery pack or wrap around the cell to heat the cell through conduction
  • Thickness range: thinnest 0.22±0.05mm
500+
Utility model patent
100+
Invention patent
700+
Partner Client
95%
Digital Transformation

Composition of PI heating film

PI heating film can achieve efficient and uniform heating, and has good flexibility, reliability, and safety, making it suitable for a variety of different applications.

Conductive heating element: Usually made of metal foil (such as copper foil, aluminum foil) or metal wire and other materials. These metal materials have good electrical conductivity and thermal conductivity, so when electric current passes through, electrical energy can be quickly converted into thermal energy, thereby generating heat.

Polyimide film (PI film): Acts as the outer insulation layer, providing insulation and protection, while also possessing good thermal conductivity, allowing heat generated by conductive heating elements to be quickly and evenly dissipated. It has characteristics such as high-temperature resistance, chemical corrosion resistance, good mechanical properties, and excellent electrical insulation performance.Electrode: Used to connect the conductive heating element to an external power source, allowing current to pass smoothly through the conductive heating element, thereby achieving the heating function. The material of the electrode usually needs to have good conductivity and welding properties.

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Automotive field

Automotive field

In battery packs and charging facilities, PI heating films are used to heat batteries, improving battery performance and charging efficiency, especially in low-temperature environments. They can effectively address the issue of reduced battery range, such as in northern regions during winter, where PI heating films are commonly used in the battery heating systems of new energy vehicles.
Healthcare field

Healthcare field

In devices such as hemodialysis machines and infusion pumps, PI heating films can be used to heat liquids or maintain a specific internal temperature of the equipment, ensuring the normal operation of medical devices and the effectiveness of treatments. For example, during the hemodialysis process, it is necessary to keep the temperature of the dialysis fluid stable, and PI heating films can provide effective heating.
Aerospace field

Aerospace field

On aircraft, satellites, and other flying vehicles, PI heating films can be used to heat critical components, such as wings and engine inlets, to prevent issues like icing and performance degradation in low-temperature, high-altitude environments. For example, in high-altitude, low-temperature flight conditions, PI heating films can provide reliable heating protection for the crucial parts of the aircraft.
Industrial sector

Industrial sector

In some industrial production equipment, such as injection molding machines and extruders, PI heating films can be used to heat barrels, molds, and other components, ensuring the smooth processing and molding of materials. For example, in the plastics processing industry, PI heating films can precisely control the heating temperature, ensuring the quality of plastic melting and molding performance.
Consumer electronics sector

Consumer electronics sector

In cold environments, PI heating films can be used to keep mobile phone batteries warm, preventing performance decline and rapid power drain due to low temperatures. For example, during winter in northern China or in high-altitude cold regions, it can improve the battery life of mobile phones. It can also defog the phone’s camera to ensure clear images.
Home life sector

Home life sector

As a new type of underfloor heating material, PI heating film has the advantages of uniform heating, rapid temperature rise, and energy efficiency and environmental friendliness. Compared to traditional water-based underfloor heating, it is easier to install, space-saving, and can achieve intelligent temperature control. For example, in some small apartments or places with installation space requirements, PI heating film underfloor heating is a very good choice.

Advantages of PI heating film:

These advantages of PI heating films make them widely used in thermal products (such as hand warmers, heated gloves, heated mouse pads, etc.), home appliances (such as electric oil-removal systems in range hoods, curling irons, hair straighteners, etc.), industrial equipment, instruments and meters, medical devices, new energy vehicles (such as battery pack and charging facility heating, steering wheel heating, rearview mirror heating, etc.), and defogging and defrosting for surveillance cameras, among many other fields.

  • Even Heating: The PI heating film provides surface heating with evenly distributed heat, allowing the object being heated to receive uniform warmth, avoiding local overheating or overcooling, and effectively improving the heating effect and product quality.
  • Soft material: Extremely soft with high flexibility, the minimum bending radius is only about 0.8mm, capable of adapting to surfaces of various complex shapes, such as curved pipes and irregular equipment, achieving close-fitting heating. It is also suitable for making flexible heating film elements with a very small area.
  • Energy Saving: With high thermal conversion efficiency, it consumes less electricity compared to other heating methods under the same heating effect, thereby saving energy.
  • Long service life: It has good stability and durability, can operate stably for a long time, reducing the frequency of replacement and maintenance, and lowering usage costs.
Up to 90%Efficiency improvement
Up to 68%Save costs
Up to 100%Increase in production