Inverter unit

An inverter and inverter circuit technology, which is applied to electrical components, irreversible DC power input to AC power output, electromechanical devices, etc. question

Active Publication Date: 2010-09-22
AISIN AW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the cooling balance of the reactor deteriorates in this way, there is a pos

Method used

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Examples

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Embodiment Construction

[0041] Hereinafter, embodiments of the present invention will be described based on the drawings. In this embodiment, a case where the present invention is applied to an inverter unit 1 that controls a motor M and a generator G included in a drive device 2 for a hybrid vehicle will be described as an example.

[0042] 1 Structure of the drive unit

[0043] First, the configuration of a drive device 2 for a hybrid vehicle having a motor M and a generator G to be controlled by the inverter unit 1 of the present invention will be described. like Figure 4 As shown, the driving device 2 has as a main structure: a generator G arranged on the first shaft A1 and a planetary gear mechanism P as a power distribution device; an electric motor M arranged on the second shaft A2; Differential D on four axles A4. In addition, a counter gear for drivingly coupling the output rotary element of the planetary gear mechanism P, the electric motor M, and the differential device D is disposed o...

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Abstract

An inverter unit capable of nearly evenly cooling the entire reactor constituting a boost circuit for boosting power supply voltage and properly cooling switching elements constituting the boost circuit and an inverter circuit. The inverter unit comprises a reactor (43) and a boosting switching element (8) constituting a boost circuit (4), inverter switching elements (6, 7) constituting an inverter circuit (3) to which power supply voltage boosted by the boost circuit (4) is supplied, and a cooler (10) provided with a refrigerant flow path (16) through which a refrigerant flows along a cooling surface (12) which the reactor (43) and the switching elements (6, 7, 8) touch. In the refrigerant flow path (16), a reactor cooling section (71) for cooling a region of the cooling surface (12) which the reactor (43) touches is disposed upstream from a switching element cooling section (81) for cooling regions thereof which the switching elements (6, 7, 8) touch.

Description

technical field [0001] The present invention relates to, for example, an inverter unit used for controlling a rotating electrical machine such as a motor or a generator, and particularly relates to an inverter unit capable of appropriately cooling heat-generating components included in such an inverter unit. Background technique [0002] In recent years, for example, as a control unit of a rotating electrical machine (motor, generator) included in a driving device used in an electric vehicle, a hybrid vehicle, etc., there is an inverter unit for controlling an inverter of the rotating electrical machine. developed. In such an inverter unit, in order to improve the output during high-speed rotation of the rotating electric machine, a configuration including a booster circuit for boosting the power supply voltage may be employed (see, for example, Patent Document 1 below). [0003] In such an inverter unit, not only the inverter switching elements constituting the inverter ci...

Claims

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Application Information

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IPC IPC(8): H02M7/48H05K7/20H02K9/19
CPCY02T10/6239B60K2001/003B60K1/02B60K6/365B60K6/405B60K6/445H05K7/20927Y02T10/62
Inventor 角田健太郎久保亮平
Owner AISIN AW CO LTD
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