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Controller and control method for hybrid vehicle

A technology for a hybrid vehicle and a control device, which is applied in the direction of a hybrid vehicle, a power device, a control device, etc., can solve the problems of increased energy loss, deterioration of fuel economy, etc., and achieve the effect of suppressing power loss

Active Publication Date: 2013-03-20
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, as in the power supply control system disclosed in Japanese Patent Application Laid-Open No. 2003-209969, there is a problem that when charging and discharging a plurality of power supply stages equally, the switching voltage in the voltage conversion device always occurs in the plurality of power supply stages. Induced power loss, thus increased energy loss and poorer fuel economy

Method used

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  • Controller and control method for hybrid vehicle
  • Controller and control method for hybrid vehicle
  • Controller and control method for hybrid vehicle

Examples

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no. 1 example

[0028] refer to figure 1 , a control block diagram of the entire hybrid vehicle including the control device according to the first embodiment of the present invention will be described. The present invention is not limited to figure 1 Hybrid vehicles shown. In the present invention, an internal combustion engine such as a gasoline engine (hereinafter referred to as an engine) as a power source may be a drive source for driving the vehicle and may be a drive source for a generator. In addition, it is sufficient that the driving source is an engine and a motor generator, and the vehicle can run with the power of the motor generator (regardless of whether the engine is stopped or not), or it may have other forms equipped with a running battery. hybrid vehicles (not limited to so-called series-type, parallel-type hybrid vehicles, etc.). Furthermore, the present invention can also be applied to electric vehicles and fuel cell vehicles that do not have an engine. The battery is...

no. 2 example

[0086] Next, a control device according to a second embodiment of the present invention will be described. The control device of the first embodiment described above always stops the second boost converter 242A ( Figure 4 S120, S122, S124). In contrast, the control device of the present embodiment temporarily operates second boost converter 242A when a predetermined condition is satisfied even when the HV travel control is being executed (while second boost converter 242A is stopped). to charge and discharge the second battery 220A. The configuration and processing other than that are the same as those of the first embodiment described above. Therefore, a detailed description will not be repeated here regarding the same configuration and processing as those of the first embodiment described above.

[0087] refer to Figure 5 A control structure of a program executed when ECU 8000 , which is the control device of the present embodiment, temporarily activates second boost c...

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Abstract

In a hybrid vehicle including: a first battery; a first boost converter for converting an output voltage of the first battery and outputting the output voltage to a motor generator; a second battery; and a second boost converter for converting an output voltage of the second battery and outputting the output voltage to the motor generator, an ECU performs HV drive control for driving the hybrid vehicle by using driving power of both an engine and the motor generator, and stops the second boost converter, when an SOC(1) that is a value indicating a state of charge of the first battery is smaller than a threshold value alpha or when an SOC(2) that is a value indicating a state of charge of the second battery is smaller than a threshold value beta.

Description

technical field [0001] The present invention relates to power control of a hybrid vehicle, and more particularly to power control of a hybrid vehicle including a plurality of units including a power storage device and a voltage conversion device that converts the output voltage of the power storage device and outputs it to a running motor. Background technique [0002] In a hybrid vehicle including an internal combustion engine and an electric motor as power sources, there is a vehicle that boosts the low-voltage output voltage of the power storage device by a voltage conversion device and converts the boosted high-voltage electric power It is supplied to the driving motor. For example, Japanese Unexamined Patent Application Publication No. 2003-209969 (Patent Document 1) discloses a technique related to electric power control of such a hybrid vehicle including a plurality of units including a power storage device and a voltage conversion device. [0003] In the power contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18B60K6/445B60L11/14B60W10/08B60W10/18B60W10/26B60W20/00B60L9/18B60L50/16
CPCY02T10/6286Y02T10/6217Y02T10/7022Y02T10/7044B60W10/06Y02T90/14Y02T10/7241B60K6/445B60Y2400/112B60L3/0046B60L2210/14Y02T10/7005B60L11/1868B60L11/005B60L15/007B60L2240/36B60L2270/20B60L11/123B60L11/1861B60W10/08B60K6/28B60Y2400/114Y02T10/6278B60W30/182Y02T10/7066Y02T10/6239B60L11/1811B60L2210/40B60W10/18Y02T90/127B60W20/00B60L11/14Y02T10/7077B60W10/26Y02T10/7088Y02T10/7225Y02T10/7072B60L50/40B60L50/61B60L50/16B60L53/20B60L58/20B60L58/13B60L58/15B60L58/14Y02T10/62Y02T10/64Y02T10/70Y02T10/72B60W20/10Y02T90/12
Inventor 芝健史郎
Owner TOYOTA JIDOSHA KK