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Automotive power inverter with reduced capacitive coupling

A technology for power converters and automobiles, which is applied to electric vehicles, output power conversion devices, electric solid-state devices, etc., can solve problems such as adverse effects of converters and motors, and increase manufacturing costs.

Inactive Publication Date: 2009-03-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When operating these power modules, capacitive coupling occurs directly between the power modules and the chassis and injects electromagnetic interference (EMI) currents in the chassis that can adversely affect the inverter and the motor
Therefore, "Y capacitors" are usually installed at the DC power input to such converters to reduce the effects of capacitive coupling and EMI currents, which increases manufacturing costs

Method used

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  • Automotive power inverter with reduced capacitive coupling
  • Automotive power inverter with reduced capacitive coupling
  • Automotive power inverter with reduced capacitive coupling

Examples

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Embodiment Construction

[0016] The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, and brief summary or the following detailed description.

[0017] The following description refers to elements or features being "connected" or "coupled" together. Unless expressly stated otherwise, "connected" as used in the present invention means that one element / feature is directly bonded to (or directly communicates with) another element / feature, and not necessarily mechanically. Similarly, unless expressly stated otherwise, "coupled" means that one element / feature is directly or indirectly joined to (or directly or indirectly in direct communication with) another element / feature, and not necessarily mechanically. combined. It should be understood, however, that while two elem...

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PUM

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Abstract

An automotive power inverter is provided. The power inverter includes a chassis, a microelectronic die coupled to the chassis and having an integrated circuit formed thereon, and an insulating region between the chassis and the microelectronic die.

Description

technical field [0001] The present invention relates generally to automotive power converters, and more particularly to an automotive power converter with reduced capacitive coupling. Background technique [0002] Electric motors and other components used in alternative fuel vehicles, such as hybrid fuel and fuel cell vehicles, typically use alternating current (AC) power. However, the power sources used in these applications, such as batteries and fuel cells, only provide direct current (DC) power. Therefore, a device called a power inverter is used to convert DC power into AC power. [0003] Modern automotive power converters typically convert DC power to AC power using power modules (or microelectronic dies) that include integrated circuits with multiple semiconductor devices ( such as transistors and diodes). These power modules generate a lot of heat due to the use of a lot of current. To ensure reliable performance, these power converters also include cooling syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/00H01L23/473H02M1/00B60R16/02
CPCH01L2924/0002B60K6/485B60K6/405Y02T10/6226Y02T10/62H01L2924/00
Inventor T·G·沃德G·S·史密斯G·约翰T·戈帕拉拉斯纳姆D·F·奈尔逊
Owner GM GLOBAL TECH OPERATIONS LLC
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