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Apparatus and method for cooling phase transition of electric and electronic equipment

A cooling device, technology of power electronics, applied in the field of devices of power electronics equipment

Inactive Publication Date: 2008-10-08
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While these methods currently appear to be satisfactory, there is still a need for more precise control of the temperature of the inverter circuit over the life of the vehicle using the traction motor to maintain reliability and control power consumption

Method used

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  • Apparatus and method for cooling phase transition of electric and electronic equipment
  • Apparatus and method for cooling phase transition of electric and electronic equipment
  • Apparatus and method for cooling phase transition of electric and electronic equipment

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Embodiment Construction

[0018] now refer to figure 1 , shows an example of an oil-electric drive 10 for driving a vehicle 12 that uses an internal combustion engine 14 and a three-phase traction motor 16 to drive wheels 18 of the vehicle through a transmission 17 . The power splitter 22 determines whether the internal combustion engine 14 or the electric machine 16 drives the transmission 17 or whether the transmission or the internal combustion engine drives the generator 24 . In an alternative embodiment (not shown), the generator 24 is mounted adjacent to the traction motor 16 and is cooled by the same means as the traction motor. The generator 24 charges the battery 26 and / or provides DC current to an inverter circuit 28 that provides AC current to the traction motor 16 . Since the inverter circuit 28 generates heat, the inverter circuit requires a cooling device 32 . According to one aspect of the invention, the cooling device 32 is connected to a sealed cooling circuit 33 thermally coupled to...

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PUM

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Abstract

A power electronic equipment of traction motor for driving vehicle is cooled in the closing system by directly injecting the dielectric liquid coolant on the inverter circuit. The liquid coolant generates phase change and evaporates when the inverter circuit inclduing the power electronic equipment is heated from the power transistor. The generated steam is condensated into liquid in the heat exchanging device which has a pipe transporting a second coolant from the radiator which is used for cooling a motor or fuel cell stacks. The overspray coolant keeping in the liquid state can be cooled by the heat exchanging device. The recycle rate of the coolant can be increased by using the latent heat of vaporization of the dielectric liquid coolant when the power output is increased, the temperature increment in the power electronic equipment is controlled.

Description

[0001] related application [0002] This application is a continuation-in-part of US Patent Application No. 11 / 054,483, filed February 9, 2005, entitled "Cooling Arrangements For Integrated Electric Motor Inverters." technical field [0003] The invention relates to a device and method for phase change cooling of power electronic equipment. More specifically, the present invention relates to apparatus and methods for cooling power electronic equipment including inverter circuits that supply current to traction motors used to drive electric vehicles such as but not limited to Battery powered vehicles, gasoline-electric hybrid vehicles and fuel cell powered electric vehicles. Background technique [0004] Vehicles that use a traction motor to drive the wheels of the vehicle, whether the motor is in a gasoline-electric hybrid vehicle or a fuel cell powered vehicle, typically use a three-phase AC motor coupled to an inverter circuit that Converts DC from a power source to AC. ...

Claims

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Application Information

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IPC IPC(8): H02M1/00H01L23/34B60K11/02F25B15/00
CPCH01L2924/0002
Inventor E・R・奥斯特伦K・D・康罗伊G・约翰G・S・史密斯
Owner GM GLOBAL TECH OPERATIONS LLC
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