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Vehicle and method for diagnosing battery device degradation

A technology of a power storage device and a diagnosis method, which is applied to power plants, vehicle components, hybrid vehicles, etc., can solve problems such as inability to accurately diagnose whether the power storage device is deteriorated or not.

Active Publication Date: 2013-11-27
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it may not be possible to accurately diagnose whether the power storage device is degraded

Method used

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  • Vehicle and method for diagnosing battery device degradation
  • Vehicle and method for diagnosing battery device degradation
  • Vehicle and method for diagnosing battery device degradation

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] refer to figure 1 An overall block diagram of the vehicle 1 according to the present embodiment will be described. The vehicle 1 includes an engine 10 , a drive shaft 16 , a first motor generator (hereinafter referred to as a first MG) 20 , a second motor generator (hereinafter referred to as a second MG) 30 , a power split device 40 , a speed reducer 58 , and a PCU ( Power Control Unit: Energy Control Unit) 60 , battery 70 , charging device 78 , drive wheels 80 , start switch 150 , and ECU (Electronic Control Unit: Electronic Control Unit) 200 .

[0034] This vehicle 1 travels with driving force output from at least one of engine 10 and second MG 30 . The power generated by the engine 10 is split into two paths by the power split device 40 . One of the two paths is a path transmitted to drive wheels 80 via speed reducer 58 , and the other path is transmitted to first MG 20 .

[0035] First MG20 and second MG30 are, for example, three-phase AC rotating electric machi...

no. 2 Embodiment approach

[0116] Hereinafter, a vehicle according to the second embodiment will be described. The operation of ECU 200 of the vehicle according to the present embodiment is different from the configuration of vehicle 1 according to the first embodiment described above. Other configurations are the same as those of the vehicle 1 according to the first embodiment described above. These structures are given the same reference numerals. They also function the same. Therefore, detailed descriptions about them will not be repeated here.

[0117] In this embodiment, there is a feature that ECU 200 shuts off the door of PCU 60 when the deterioration diagnosis process for diagnosing whether or not battery 70 is deteriorated is being executed.

[0118] exist Figure 6 A functional block diagram of ECU 200 mounted in the vehicle according to the present embodiment is shown in FIG. Additionally, with figure 2 Compared with the functional block diagram of ECU 200 in the first embodiment shown...

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Abstract

An ECU executes a program including the steps of: prohibiting startup of an engine when there is a request for execution of a deterioration diagnosis process and when the deterioration diagnosis process is in execution; and releasing prohibition of startup of the engine when the deterioration diagnosis process is completed.

Description

technical field [0001] The present invention relates to deterioration diagnosis of a power storage device mounted on a vehicle. Background technique [0002] A hybrid vehicle equipped with an internal combustion engine, a driving motor, and an electrical storage device for supplying electric power to the driving motor is known. In such a vehicle, it is necessary to diagnose with high precision whether or not the power storage device is degraded. [0003] Japanese Unexamined Patent Publication No. 2000-131404 discloses a deterioration degree determination device that diagnoses whether or not a power storage device is degraded based on a discharge amount from a fully charged state to a predetermined discharge voltage value. [0004] prior art literature [0005] Patent Document 1: Japanese Patent Laid-Open No. 2000-131404 Contents of the invention [0006] The problem to be solved by the invention [0007] However, when the internal combustion engine is started during th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60K6/445B60W10/08B60W20/00B60L50/16
CPCB60W20/00Y02T10/6286Y02T10/6239Y10S903/903B60W20/108B60W20/106B60W10/06B60W10/26B60W10/08B60K6/445B60W50/0205B60W20/50B60W20/13Y02T10/62B60W30/192B60W20/15
Inventor 佐藤启太
Owner TOYOTA JIDOSHA KK
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