EV Sales

Posts Tagged ‘power’

Hybrid Electric Vehicle Power Systems Receive Major Upgrade

Hybrid Electric Vehicle Power Systems Receive Major Upgrade

A leading company specializing in the design and production of materials forelectronic thermal management, now uses AlSiC (Aluminum Silicon Carbide), a metal matrix composite ideally matched for base plates material for insulated gate bipolar transistor (IGBT), used in power control, high-power traction, fly-by-wire applications, and Hybrid Electric Vehicle power systems.

The low isotropic coefficient of thermal expansion (CTE) value of AlSiC-9 (8 ppm/°C: 30 – 100°C) is compatible with the thermal expansion value of the substrate or die used in IGBT power modules. The AlSiC CTE match lowers the mechanical stresses on IGBT die and substrates that are introduced by thermal power cycling, improving dependability of substrate attachment and reducing die cracking failures.

The device compatible AlSiC CTE removes the need for stress compensation material layers which are required in Copper (CTE = 17ppm/°C) baseplate assemblies. Removal of stress compensation materials simplifies baseplate assembly and decreases thermal resistance for AlSiC systems, meaning AlSiC systems have equal or improved thermal dissipation over Copper baseplate assemblies.

In high power applications (> 1200 V/ 400 A), IGBT modules assembled with AlSiC baseplates are found to have a service reliability of many times more thermal power cycles over Copper equivalent systems.

AlSiC is a lightweight material (1/3 that of Copper), which makes it an ideal cooler material for the weight-sensitive IGBT applications. AlSiC has higher strength and stiffness than Copper, which, combined with its lightweight nature, makes AlSiC assemblies more tolerant to shock and vibration.

The CPS AlSiC near net-shape fabrication process both produces the composite material and fabricates the product geometry, creating the design of IGBT base plates with a dome profile. This geometry improves thermal interface contact with cold plates and coolers. CPS fabricates standard of 190 mm x 140 mm, 140 mm x 130 mm and 140 mm x 70 mm base plate formats (shown) as well as custom formats.

More Hybrid Electric Vehicle Articles

This shows how simple it is to power-up, and a quick demo of the electric throttle to show how smooth and controllable the power is. Wheels and suspension parts on the way–and then I’ll give it a first ride!

Cps the World Leader in Alsic Products Now Offers Pin Fin Coolers for Hybrid Electric Vehicle Igbt Power Modules

High reliability, CTE compatibility, and light weight, along with strength, and stiffness are key factors in the design of coolers for power modules in Hybrid Electric Vehicles (HEV) applications. CPS AlSiC coolers meet this challenge with optimum thermal performance and consistent reliability throughout the application life cycle.

Liquid cooling is the most effective way to dissipate heat (1 – 2KW) in HEV power module applications. CPS AlSiC coolers cost effectively offer the pin fin geometries that are required for effective liquid cooling. In addition, CPS AlSiC coolers provide an isotropic thermal expansion that is compatible with device/electronic substrate to reduce mechanically induced stresses during power thermal cycling for improved electronics and module reliability. The AlSiC device compatible thermal expansion (8 ppm/°C) simplifies IGBT assembly compared to Cu pin fin coolers (17 ppm/°C) thermal expansion, eliminating the need for stress compensation layers that increase thermal resistance, assembly complexity and module cost.

AlSiC is a lightweight material (1/3 that of Cu), which makes it an ideal cooler material for the weight-sensitive hybrid electric (HEV), electric vehicle (EV) application and in kinetic energy recovery systems (KERS). AlSiC also has higher strength and stiffness than Cu, which, combined with its lightweight nature, makes AlSiC coolers more tolerant of shock and vibration.

The CPS AlSiC fabrication process efficiently produces both the composite material and fabricates the product geometry in one process step. CPS can work with customers to provide designs that are fabricated to shape requiring no finished machining for very cost effective cooler production.

About CPS Technologies Corporation

CPS Technologies Corporation is the worldwide leader in the design and high-volume production of metal matrix composites. CPS uses a net-shape fabrication process, including patented QuickSet™ injection molding and QuickCast™ infiltration. AlSiC components are used in applications in the wireless communications infrastructure, high-performance microprocessor, motor controller, and other microelectronic markets. CPS is a publicly traded company (symbol “CPSH”). CPS’ customers include TI, Motorola, HP, Infineon, Agilent and Amkor. For more information on CPS’ AlSiC components, contact Mark Occhionero

Question: Physics 1001 Question: Gigawatts, Exajoules, Electric power, transportation energy, etc? Help please.?

I missed my physics class due to a funeral and my homework question is this: “We estimated the amount of distributed electric power at 300Gigawatts from the graph of 103 exajoules total primary use in 2002. Check this number. What would this have to increase to if 80% of final transportation energy had to come from electricity via plug-in electric vehicles or hybrids?” I have no idea where to even begin with this question…

Best answer:

Answer by Breath on the Wind
You have presented a problem without stating what means are intended to solve it. You are asked to check a statement of power. You gave a year but what country(s) are you talking about? Where are you finding “…the graph of 103 exajoules primary use in 2002″ What resources are you to use to check this number? If it was past classroom work it seems you missed a bit more than one class. Are you expected to go out on the world wide web for the numbers?

Apparently this mysterious “graph” lists “transportation energy” separately. Apparently you are intended to make an assumption that electricity from plug in electric vehicles or hybrids will increase electrical usage. There has been some mention of this among the questions here. There is some reason to challenge the assumption (1) of an increase and some go along with it unquestioned. To respond to this problem you may be required to not challenge the assumption but you still have to have some basis on which to express your answer. You have to know the value associated with this 80% increase and “the graph” may be some clue to this but probably not all the required facts.

You might find a better answer with all the information under the “Physics” section which can be found under “Science and Mathametics”

What do you think? Answer below!