Lithium-ion batteries lose up to 50% of their rated capacity at 0°C (32°F) and will not accept a charge below -7°C (19°F). For electric vehicles, this can mean half the designed driving range. For stationary storage, it can cut backup time in half.
Calienté battery heaters are engineered to solve this problem. Each part is custom-designed to your specific battery dimensions, voltage, and wattage. NRE ranges from $2,500 to $4,000 and samples are typically available in 4-6 weeks.
For commercial EV’s, our heaters efficiently warm battery packs to -7°C, enabling effective charging while in plug in mode. Once charging begins, Calienté heater foils supplement internally generated heat to bring the pack to optimal operating temperature faster.
Calienté pad heaters can also function as a safe, rapid discharge resistor, allowing excess power to be dissipated during regeneration or in the event of a crash.
Calienté heater pads are the most time-, energy-, and cost-efficient way to heat battery systems.
Calienté heaters are available in:
PTC heater pads increase resistance 8–12× near the regulating temperature, reducing power output to near zero and eliminating the risk of overheating. They also reduce the number of redundant safety layers required, lowering overall system cost.
Calienté designs heaters for nearly any input voltage, including 800+ V, while meeting UL isolation standards for safety.
Watt density depends on the thermal mass and conductivity of the bonded surface:
For fixed-wattage designs, Calienté works with customers to define optimal sensing and control strategies.
Thanks to their thin profile, ModuleDirect pads have negligible impact on cooling when bonded to cold plates using pressure-sensitive adhesive. In cases where surface tolerances exist, a thermal interface material (TIM) may be required.
Calienté can supply heater pads with TIM pre-bonded, reducing assembly steps and overall cost.
One historical concern with pad heaters has been the labor required to bond them without trapping air bubbles, which can cause hot spots or failures.
Caliente has developed proprietary materials, designs, processes, and validation tests to ensure pad heaters can be installed reliably, cost-effectively, and bubble-free.
No matter how big or small, standard or custom, we have the solutions you need for your application. Just give us a little info and we’ll follow up to discuss your project.