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Hybrid automobile

A technology for hybrid vehicles and electric power, applied in hybrid vehicles, motor vehicles, power plants, etc., can solve the problems of PCU size increase and deterioration of PCU installability, etc., and achieve the effect of size reduction

Inactive Publication Date: 2009-01-14
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in an increase in the size of the PCU, thereby deteriorating the mountability of the PCU

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0045] figure 1is a functional block diagram schematically showing the configuration of the hybrid vehicle according to the first embodiment of the present invention. refer to figure 1 Hybrid vehicle 100 includes main power storage device B1 , power control unit (hereinafter referred to as “PCU”) 50 , motor generators MG1 , MG2 , and electronic control unit (hereinafter referred to as “ECU”) 24 . Hybrid vehicle 100 further includes engine ENG, power split device 16, reduction gear 18, drive shaft 20, front wheels FR, FL, and rear wheels RR, RL. Hybrid vehicle 100 also includes DC / DC converter 22 , power storage device B2 for auxiliary equipment, and water pump 26 .

[0046] Power split device 16 is connected to engine ENG and motor generators MG1, MG2 to distribute power among them. For example, a planetary gear mechanism having three rotation shafts including a sun gear, a planet carrier, and a ring gear may be used as the power split mechanism 16 . These three rotation s...

no. 2 example

[0076] The second embodiment differs from the first embodiment in the configuration of the cooling system. The overall configuration of the hybrid vehicle according to the second embodiment and the installation position of the DC / DC converter 22 are the same as those of the hybrid vehicle 100 according to the first embodiment.

[0077] Figure 5 is a functional block diagram schematically showing the configuration of a hybrid vehicle according to a second embodiment of the present invention. refer to Figure 5 , replaced by Figure 4 Referring to the cooling water paths 224 , 234 , 236 in the configuration of the cooling system of the first embodiment shown, this cooling system 200A includes cooling water paths 240 , 242 , 244 .

[0078] Cooling water path 240 is provided between water pump 26 and DC / DC converter 22 , and cooling water path 242 is provided between DC / DC converter 22 and engine ENG. Further, cooling water path 244 is provided between water pump 218 and moto...

no. 3 example

[0084] Image 6 is a functional block diagram schematically illustrating the configuration of a hybrid vehicle according to a third embodiment of the present invention. refer to Image 6 , replacing respectively according to figure 1 Water pump 26 and ECU 24 in the configuration of hybrid vehicle 100 of the first embodiment shown, hybrid vehicle 100A includes electric water pump 26A and ECU 24A.

[0085] Electric water pump 26A receives electric power from power storage device B2 for auxiliary devices and operates based on a drive instruction from ECU 24A. The electric water pump 26A circulates the cooling water of the cooling system of the engine ENG.

[0086] ECU 24A generates a control signal for driving electric water pump 26A, and outputs the generated control signal to electric water pump 26A. Note that other functions of the ECU 24A are the same as those of the ECU 24 in the first embodiment.

[0087] In addition, other configurations and bases of the hybrid vehicl...

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PUM

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Abstract

A hybrid automobile does not have an alternator found in conventional engine-powered vehicles because electric power is generated by a motor generator whose rotating shaft is mechanically connected to the output shaft of an engine (ENG). A DC / DC converter (22) is separated from a power control unit and installed at that place of the engine (ENG) where an alternator, replaced with a motor generator, was located.

Description

technical field [0001] The present invention relates generally to hybrid vehicles, and more particularly to hybrid vehicles equipped with converters that generate voltages for auxiliary equipment. Background technique [0002] As environmentally friendly vehicles, attention has recently been focused on hybrid vehicles. In addition to a conventional engine, a hybrid vehicle is equipped with a power storage device, an inverter, and an electric motor driven by the inverter as a power source. [0003] In such a hybrid vehicle, a high voltage of several hundred volts is used to ensure the high voltage output of the power system (including the above-mentioned power storage device, inverter and electric motor), while such as 12V (14V power supply system) The low pressure of the supply system) is usually used for auxiliary equipment systems. One known vehicle is equipped with a DC (direct current) / DC converter which reduces the high voltage of the powertrain to generate a low volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/28H02M3/00H02M7/48B60K5/04B60K11/04B60L11/14B60H1/22B60K6/24B60K6/26B60K6/40B60K6/445B60L50/16
CPCY02T10/6239B60K11/02B60K2001/003B60L2210/10B60L11/14Y02T10/7216Y02T10/7077B60K6/445B60L50/16Y02T10/62Y02T10/72Y02T10/7072H02M7/48B60K6/40B60K2001/006B60Y2200/92Y02T10/70
Inventor 秋山忠史
Owner TOYOTA JIDOSHA KK