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Inverter for electric vehicle and operation method thereof

A technology of electric vehicles and operating methods, applied in the field of inverters, which can solve the problems of limited space and high cost of inverters

Pending Publication Date: 2018-11-27
VALEO EAUTOMOTIVE GERMANY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] These conventional devices have the disadvantage that an additional discharge circuit is required, which is difficult to integrate in the inverter housing due to the limited space available in the inverter housing
In addition, a separate discharge circuit also results in higher cost

Method used

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  • Inverter for electric vehicle and operation method thereof
  • Inverter for electric vehicle and operation method thereof
  • Inverter for electric vehicle and operation method thereof

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Embodiment Construction

[0027] figure 1 A converter 1 is shown in FIG. 1 , which includes an intermediate circuit capacitor 2 , which is connected to a power switch 3 . The power switches 3 (IGBTs) are implemented in the form of three half-bridges, each of which is connected to one of the three phases 4, 5, 6 (U, V, W). The three phases 4 , 5 , 6 (U, V, W) form the output of the inverter 1 and are connected to the electric motor 7 . The inverter 1 generates a three-phase alternating voltage with variable frequency and variable amplitude for driving an electric motor 7 configured as a three-phase current motor.

[0028] The input of the converter 1 is connected to a high-voltage battery 10 via two high-voltage lines 8 , 9 . The high-voltage battery 10 includes a plurality of individual batteries that are connected to each other so that the high-voltage battery 10 can output a high voltage, for example, a high voltage of the order of 400V.

[0029] The high-voltage battery 10 includes a battery mana...

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Abstract

An inverter (1) is connectable or connectable to an electric motor (7) of an electric vehicle or a hybrid vehicle and includes an intermediate circuit capacitor (2), a disconnect switch (3), an outputterminal associated with phases (4, 5, 6) of the electric motor (7) respectively, and a control device (17) that triggers a discharge process of the intermediate circuit capacitor (2) on the basis ofa control signal; wherein the control device (17) controls the disconnecting switch (3) by outputting alternating current to the output terminal during the discharging process. Furthermore, the invention relates to a vehicle comprising the inverter (1) and a method of operation for the inverter (1).

Description

technical field [0001] The invention relates to an inverter connectable or connectable to an electric motor of an electric or hybrid vehicle, the inverter comprising an intermediate circuit capacitor, a disconnect switch and an output respectively associated with the electric motor, the inverter The inverter also includes a control device configured to trigger a discharge process of the intermediate circuit capacitance based on the control signal. Background technique [0002] Document DE 10 2008 061 585 A1 discloses an inverter which regulates and controls a three-phase electric motor via a variable three-phase grid. In this document, the intermediate circuit capacitance can store considerable energy at high voltages. For safety reasons, a discharge device is provided for the intermediate circuit capacitor, which discharge device is used to discharge the intermediate circuit capacitor outside the operating hours of the vehicle or in the presence of an identified impending ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/5387B60L3/00B60L3/04
CPCB60L3/0007B60L3/04H02M7/5387H02M7/53875B60L3/0046B60L15/007B60L2210/40B60L3/00Y02T10/64Y02T10/72
Inventor 托马斯·德穆特弗兰克·琼科特马库斯·索伊杰
Owner VALEO EAUTOMOTIVE GERMANY GMBH
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