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Power Electronics

Advancements in nano-technology (including GaN & SiC) are creating components with ever increasing heat density, combine this with the need to reduce packaging weight and volume and power electronics are increasingly difficult to thermally manage.

Smaller manufacturing techniques are resulting in higher heat flux.
The desire for compact packaging is restricting typical cooling methods.
Component efficiency is impacted if the cooling is not powerful enough.

Which components can be cooled?

Calyos provides solutions for all types of power electronic components.

MOSFETs
IGBTs
SiC
GaN

What solutions does Calyos offer?

Calyos offers two solutions for cooling power electronic components, each with their own merits.

Loop Heat Pipes

LHPs provide the ability to not only handle very high heat flux, but also to transport heat over long distances.

Why this solution?

A high performance solution typically used for dissipating heat from high heat flux >150W electronic components transporting the heat long distance to an appropriate cold source.

Ability to cool the latest high heat flux components effectively, including systems that need to dissipate several kW.
Long distance transport of heat provides option to dissipate the heat passively, yet far away from the heat source itself.
Easily scalable to the number of components that require cooling, collecting the heat and dissipating it in one location.

How can you customize this solution?

Evaporator Size & Mounting

The size and mounting plates can be customized to your processor and socket.

Number of Evaporators

Multiple evaporators can be configured together using parallel lines.

Line Routing

Lines can be routed around other components on the PCB, plus flexible lines allow for serviceability.

Condenser Type & Size

Different technologies such as conductive plates and air exchangers can be used as needed.

Heat Pipes

Traditional HPs are beautifully simple and provide incredibly low thermal resistances.

Why this solution?

Ideal for static applications cooling high power components dissipating heat loads >250W per component, with total power >1kW, where the cold source can be directly above the heat source.

Low cost, yet high performance solution that is ideal for static applications.
Evaporator plate can be easily customised based on size of component.
Double sided evaporator plates can enable compact design with efficient cooling.

How can you customize this solution?

Evaporator Plate

Customize angle and location of bends to enable better integration within a battery pack.

Distance

Customize the length based on the geometry of the cell.

Condenser Dimensions

Design new cross sectional shapes
(such as this triangular concept) to suit your geometry.

Our two-phase cooling systems always bring three clear benefits:

Passive & Pump Free

Ultra Reliable & Zero Maintenance

High HTC & Low Thermal Resistance

Use Cases

There are thousands of use cases for our technology. Here we have selected a few examples to give you an idea of how our solutions can be used. Don't be afraid if you have something different - reach out to us and we can validate the application through an initial feasibility analysis.

request feasibility Analysis
Our solution cooled 8 IGBT modules, with a total thermal power of 11.2kW. By reducing the thermal resistance of the cooling system, the client could reduce the number of IGBT modules reducing cost significantly. There are also no pumps, nor fans drastically reducing maintenance.

E-Mobility

:

Rail

Traction Inverter

Our solution cooled 8 IGBT modules, with a total thermal power of 11.2kW. By reducing the thermal resistance of the cooling system, the client could reduce the number of IGBT modules reducing cost significantly. There are also no pumps, nor fans drastically reducing maintenance.
Fully aluminum, lightweight, quieter solution that provides higher thermal performance enabling better component efficiency and longer component lifetime.

Renewable Energy

:

Renewable Energy Inverter

Fully aluminum, lightweight, quieter solution that provides higher thermal performance enabling better component efficiency and longer component lifetime.
Our solution was designed to remove 4.2kW heat from three IGBT modules. Multiple inverter modules were located within a single solar farm site.

Renewable Energy

:

Solar

Solar Inverter

Our solution was designed to remove 4.2kW heat from three IGBT modules. Multiple inverter modules were located within a single solar farm site.
Our solution was designed to remove 2.4kW of thermal power from the inverter and recover this energy by pre-heating the HVAC system. Our LHP-PE solution transported the heat over 4m, completely passively, proving our ability to transport heat over long distance against accelerations.

E-Mobility

:

Light Vehicles

Power Inverter

Our solution was designed to remove 2.4kW of thermal power from the inverter and recover this energy by pre-heating the HVAC system. Our LHP-PE solution transported the heat over 4m, completely passively, proving our ability to transport heat over long distance against accelerations.
PHP functioning as a heat spreader and dissipating 800W.

Specialized Equipment

:

Research

PHP Spreader

PHP functioning as a heat spreader and dissipating 800W.
Designed to fit inside an existing cabinet, the heat pipe systems was able to cool two rows of IGBTs. Fans assist with the airflow through the air exchanger.

E-Mobility

:

Rail

Substation

Designed to fit inside an existing cabinet, the heat pipe systems was able to cool two rows of IGBTs. Fans assist with the airflow through the air exchanger.
Double sided evaporator capable of cooling 1.5kW of heat from 6 IGBTs with a thermal resistance of 0.011K/W.

E-Mobility

:

Inverter

Double sided evaporator capable of cooling 1.5kW of heat from 6 IGBTs with a thermal resistance of 0.011K/W.

LHP

Solution Sheet

Our solution sheet includes on general specification, operating information, system materials and typical evaporators and condensers.

Download Solution Sheet

HP

Solution Sheet

Our solution sheet includes on general specification, operating information, system materials and typical evaporators and condensers.

Download Solution Sheet

Let's Get Started

Schedule an introductory call with one of Calyos' two-phase experts.

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