Description
PTC Heating Film for Battery Packs – Low-Temperature Self-Regulating Heating Solution
PTC heating film is an advanced battery thermal management solution designed to improve lithium battery performance in low-temperature environments. As a professional manufacturer and OEM supplier, we provide high-efficiency, self-regulating PTC heating films widely used in EV battery packs, energy storage systems (ESS), forklifts, and industrial batteries. With stable operation from -40°C to 80°C, this ultra-thin heating solution ensures reliable charging, discharging, and extended battery lifespan in cold climates.
Reliable PTC Heating Film Manufacturer for Battery Thermal Management Solutions
PTC (Positive Temperature Coefficient) heating film is a self-regulating electric heating material that automatically adjusts its power output based on temperature. Unlike traditional resistance heating, PTC heating film increases resistance as temperature rises, limiting current flow and preventing overheating. The heating core is made of conductive ink with PTC characteristics and silver paste, replacing traditional metal heating elements, delivering safer and more uniform heating.
PTC Heating Film vs PI Heating Film
| Feature | PTC Heating Film | PI Heating Film |
|---|---|---|
| Temperature Control | Self-regulating | External control required |
| Safety | High (no overheating) | Moderate |
| Heating Efficiency | Adaptive | Constant |
| Application | Battery heating, EV, ESS | General heating |
| Reliability | High (parallel circuit design) | Lower |
Key Features & Advantages
- Self-regulating temperature control that prevents overheating and improves system safety
- High safety performance with no open flame or electric arc
- Reliable low-temperature operation down to -40°C
- High thermal efficiency, typically above 70%
- Ultra-thin and flexible structure for easy integration
- Long service life with stable performance over thousands of hours
Technical Specifications
- Power Density: < 1.2 W/cm²
- Working Temperature: -40°C to 80°C
- Dry Burn Temperature: ≤100°C
- Thickness: 0.22 ± 0.05 mm
- Structure: Polyimide (PI) film + conductive ink + silver paste + double-sided tape
- Heating Method: Conduction heating
- Installation: Attached to battery pack surface
Structure of PTC Heating Film
The PTC heating film consists of multiple functional layers:
- Thermosensitive materials (e.g., barium titanate) providing PTC effect
- Conductive layer using silver or nickel-based materials
- Ceramic substrate offering insulation and thermal stability
- Film substrate (PI or PET) for flexibility and durability
This multi-layer structure ensures stable, efficient, and safe heating performance.
Applications
- Electric Vehicle (EV) battery packs
- Energy Storage Systems (ESS)
- Forklift lithium batteries
- Golf cart batteries
- AGV and robotics battery systems
- Cold climate battery systems
- Industrial power equipment
Why Battery Heating Matters
In low-temperature environments, lithium batteries experience reduced charging efficiency, increased internal resistance, and capacity loss. PTC heating film helps maintain optimal operating temperature, improving battery efficiency, extending service life, and ensuring stable performance in cold conditions.
OEM & Customization Services
As a professional PTC heating film manufacturer and supplier, we offer:
- Custom sizes and shapes
- Voltage and power customization
- Adhesive and installation design
- OEM and ODM manufacturing services
- Bulk supply for EV, ESS, and industrial applications
Factory-direct supply ensures competitive pricing, consistent quality, and reliable delivery.
PTC heating film low-temperature heating factory
FAQ
What is a PTC heating film used for?
PTC heating film is used to heat battery packs, especially in electric vehicles and energy storage systems, to maintain performance in low temperatures.
Is PTC heating film safe?
Yes. It features self-regulating temperature control that prevents overheating and reduces fire risks.
What is the difference between PTC and traditional heating?
PTC heating automatically limits power as temperature rises, while traditional heating continues increasing temperature without self-regulation.
Can PTC heating film be customized?
Yes. Manufacturers can customize size, voltage, power density, and structure based on application requirements.
PTC heating film is an essential solution for modern battery thermal management in cold environments. As a trusted manufacturer, supplier, and factory, we provide high-quality, customizable heating solutions for EV, ESS, and industrial battery systems worldwide. Contact us for OEM and bulk supply inquiries.
Author Profile
- BatteryRing Sales Engineers bring over 20 years of experience in the global battery supply chain, positioning us as true industry experts. We provide end-to-end consulting services covering the entire battery lifecycle, including R&D, laboratory testing, product planning, material sourcing, manufacturing equipment, system design, and full production line construction. Our mission is to empower your energy business with efficient, scalable, and technically advanced solutions for accelerated growth.
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