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Control device for hybrid vehicle

A hybrid vehicle and control device technology, which is applied to hybrid vehicles, power devices, control devices, etc., can solve the problems of shortening the driving distance of the motor, inability to effectively use battery power, and failure to maintain it, so as to improve fuel efficiency. Effect

Inactive Publication Date: 2014-06-04
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, load limiting control that limits the load applied to the motor when the temperature of the motor exceeds a predetermined temperature is effective in protecting the motor. However, if the load on the motor is uniformly limited, there will be The problem that the distance traveled with only electric motors ends up being shortened
For example, when the SOC of the battery that supplies power to the motor is sufficiently high, there is a margin in the power supplied from the battery to the motor, but when the temperature of the motor reaches a predetermined temperature, the control shifts to load limiting control, even though it could have been sufficient. The electric power of the battery is used, but due to the situation on the motor side, it is impossible to maintain the running only by the power of the electric motor, and there is a problem that the electric power of the battery cannot be effectively used

Method used

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Embodiment Construction

[0024] Hereinafter, an embodiment of the present invention will be described based on the drawings.

[0025] figure 1 A system configuration diagram of the hybrid vehicle 10 in this embodiment is shown. The hybrid vehicle 10 is, for example, a plug-in hybrid vehicle. The vehicle 10 is a vehicle that uses the power of at least one of the engine 100 and the second motor generator MG(2) 300B to travel, and can use electric power from an AC power source 19 outside the vehicle such as a household power source to oppose the MG(2) 300B The battery 310 for traveling which supplies electric power is charged.

[0026] In addition to the engine 100, the MG (2) 300B, and the battery 310 for traveling, the vehicle 10 also includes a power split mechanism 200, a speed reducer 14, an inverter 330, a boost converter 320, an engine ECU 406, an MGECU 402, a HVECU 404, and the like.

[0027] The power split mechanism 200 distributes the power generated by the engine 100 to the output shaft 212 and th...

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PUM

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Abstract

A control device for a hybrid vehicle, comprising a mode whereby the vehicle runs using a motor only, and a mode whereby the vehicle uses both the motor and an engine. When the motor temperature of an MG (2) (300B) exceeds a threshold temperature, an ECU (400) moves from a running mode that uses the MG (2) (300B) only, to a running mode that limits the load on the MG (2) (300B). When the charging state of a battery (310) for running exceeds a threshold value, the ECU (400) performs control such that in addition to the system voltage for driving the MG (2) (300B) being reduced, the threshold temperature is increased, and the running mode whereby only the MG (2) (300B) is used is maintained.

Description

Technical field [0001] The invention relates to a control device for a hybrid vehicle. Background technique [0002] There is known a hybrid vehicle that uses the power of at least one of an engine and an electric motor to travel. In a hybrid vehicle, the power storage amount or state of charge (SC) of the battery that is controlled to supply electric power to the electric motor is within a predetermined range. When the SOC of the battery is below the lower limit of the predetermined range, the engine is forcibly driven, and the battery is charged with electric power obtained by generating power using the driving force of the engine to restore the SOC of the battery. [0003] On the other hand, in hybrid vehicles, in order to improve fuel efficiency, it is required to increase the distance that can be traveled using only the electric motor as much as possible. However, it is known that when the temperature of the electric motor exceeds a predetermined allowable temperature, in ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/08B60K6/442B60L11/18B60W20/00B60L50/15B60L50/16
CPCY02T10/642B60W20/50B60L15/20Y02T10/7005B60L2240/421Y02T90/127Y02T10/7241B60L3/04B60L11/1816B60L3/0046B60L2210/14Y02T10/7044B60L3/0061B60L2210/40B60L2210/10Y02T10/7077B60L2240/443B60L2240/549Y02T10/7088B60L11/14B60L2240/423B60K6/445Y02T90/121B60W20/106H02P29/0055B60L2240/425Y02T10/6239Y02T90/14B60L11/1861B60L2240/12B60L11/1862B60W10/26Y02T10/7216B60L2240/547B60L2240/545B60L11/123B60L2240/441Y02T10/705Y02T10/6217B60W10/08Y10S903/93B60W2510/087B60L50/16B60L50/61B60L53/14B60L58/12B60L58/13H02P29/64Y02T10/62B60W30/1843B60W2510/244B60W2710/248B60W20/13Y02T10/64Y02T10/70Y02T10/7072Y02T10/72B60W10/30B60W20/10Y02T90/12
Inventor 泷泽敬次宫本知彦松坂周平
Owner TOYOTA JIDOSHA KK
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