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HEV ISC Cooling VIA a Vortex Tube Disclosure Number: IPCOM000249956D
Publication Date: 2017-May-08
Document File: 1 page(s) / 102K

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Inverter System Controller (ISC) Cooled with Compressed Air Chilled from a Vortex


The high voltage electrical parts of a hybrid or BEV system (ISC) is cooled via liquid coolant

system. The ISC is used to control the three phase electric machines. The ISC is cooled in order

to protect the IGBT within the ISC from overheating. Whenever the ISC is powered on it has to

be cooled.

Figure 1 Figure 2

The proposed method replaces liquid coolant (figure 1) to chill the ISC, with a vortex tube (figure 2) used to supply compressed chilled air. The chilled air will enter and exit the ISC

using the normal cooler in/out ports of the ISC. Using compressed air instead of coolant will

eliminate the costs of the additional machinery needed for the glycol system. The safety and

concern about coolant leaking will also be eliminated. The Vortex cooling system can be used

for ISC level and for transmission system level testing where liquid cooling would not be

feasible. The vortex tube can also replace the liquid ISC coolant system in vehicle saving cost,

weight and package space. The chilled air system can replace liquid coolant whenever the heat

mitigations allows it.

Disclosed anonymously