A thick-film PTC heating plate is a flat component with a positive-temperature-coefficient resistive layer.
A thick-film PTC heating plate is a flat component with a positive-temperature-coefficient resistive layer. This construction combines an electrically insulating layer and a heating layer on a metal substrate. In a suitable thermal-management assembly, heat passes from the plate into the intended thermal path, which may include a circulating liquid medium. It is a component-level product, distinct from a finished PTC air heater or fan-assisted cabin heater. Its usable output depends on the electrical input, heat-transfer interface and conditions that carry heat away from the plate.
Start with the required heat path, plate interface and electrical conditions, then assess temperature response and protection in the complete system. Plate output alone does not define the performance of a coolant heater.
For integration into a defined battery-heating thermal path. Specify whether heat is transferred through a coolant assembly or another interface, along with the battery system's temperature and control requirements.
Enquire about this configurationFor a plate considered as part of a liquid-mediated cabin-heating assembly. Define the heat-exchanger interface and operating states; a heating plate is not a complete cabin heater.
Enquire about this configurationFor equipment coordinating several thermal demands. Identify the actual circuit receiving heat, its flow conditions and control responsibility so the plate is evaluated within a clearly defined assembly.
Enquire about this configurationReview the useful heat-transfer area and the structure receiving the heat. Distinguish the plate component from coolant passages, seals and other parts of the finished assembly.
Discuss the resistance and power response across the required temperature and supply envelope. Establish the conditions used to compare startup performance and steady operation.
Coordinate the mounting layout with the surrounding structure and operating cycle. Include mechanical support and interface consistency in the drawing review instead of relying only on overall plate dimensions.
Define the measurements needed on a representative assembly: useful heat transfer, temperature distribution, electrical isolation and behavior under relevant fault conditions. Keep acceptance criteria tied to equipment requirements.
Share these details with your inquiry. Product ratings and operating limits are confirmed for the selected configuration.
| What to specify | Unit / format | Selection guidance |
|---|---|---|
| Plate envelope and interface | mm | Provide outline, thickness allowance, mounting areas and the useful heat-transfer face on a controlled drawing. |
| Electrical operating envelope | V / A | State nominal supply, variation, startup conditions and the equipment's current or power constraints. |
| Required heat input | W / W/cm² | Define output at specified thermal-interface conditions rather than treating maximum power density as a universal operating point. |
| Temperature-response requirement | °C / Ω | Specify the operating temperature objectives and the resistance-temperature data needed for system design. |
| Heat-removal conditions | L/min / °C | For liquid-mediated assemblies, provide fluid composition, flow range and inlet temperature at relevant operating cases. |
| Electrical isolation | test requirement | State dielectric, insulation and system-isolation acceptance requirements for the complete assembly. |
| Mechanical and thermal cycling | cycle / profile | Provide the operating cycle, vibration environment and required assembly-level validation conditions. |
| Terminations and control | type / signal | Define connection access, sensing, power regulation and the required response to loss of heat removal. |
Provide outline, thickness allowance, mounting areas and the useful heat-transfer face on a controlled drawing.
State nominal supply, variation, startup conditions and the equipment's current or power constraints.
Define output at specified thermal-interface conditions rather than treating maximum power density as a universal operating point.
Specify the operating temperature objectives and the resistance-temperature data needed for system design.
For liquid-mediated assemblies, provide fluid composition, flow range and inlet temperature at relevant operating cases.
State dielectric, insulation and system-isolation acceptance requirements for the complete assembly.
Provide the operating cycle, vibration environment and required assembly-level validation conditions.
Define connection access, sensing, power regulation and the required response to loss of heat removal.
For an integrated thermal-management concept that transfers heat through a liquid medium. The battery-system design establishes operating limits and control permissions; the plate is evaluated within that architecture.
For a suitable coolant-based cabin-heating assembly. Define the required useful heat and fluid conditions, with the air-side heat exchanger and vehicle control system treated as separate integration responsibilities.
For a system that distributes heat to defined vehicle subsystems. Identify the valve and pump states that affect the plate's thermal path before assessing the component's operating envelope.
Identify what is being purchased: the plate, a mounted subassembly or a complete liquid-heating unit. Provide an interface drawing and allocate responsibility for fluid containment, controls and protection.
Set the electrical supply and heat-removal conditions for each required output point. Include cold startup and reduced circulation so nominal plate power is not mistaken for a complete system rating.
Agree a test plan using the intended interface and controls. Compare temperature distribution, electrical behavior and useful heat under the defined conditions, then review relevant abnormal operating states.
Send your application details, drawing and planned quantity. We can review the configuration and the information needed for a quotation.
These references explain heating principles. Confirm the ratings, approvals and operating limits of the proposed VELHEAT configuration in its own documentation.
Thick-film plate construction and liquid-mediated vehicle thermal-management context only; performance, safety and numeric claims excluded.
