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Fuel cell vehicle

A fuel cell vehicle and fuel cell technology, applied in the direction of fuel cells, fuel cell applications, fuel cell additives, etc., can solve the problems of reducing regeneration control efficiency and driving efficiency

Pending Publication Date: 2020-10-20
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the conventional technology, when the secondary battery cannot be charged with all the electric power generated by the drive motor, there is a difference in the excess electric power obtained by subtracting the electric power distributed to the auxiliary equipment from the excess electric power that cannot be charged to the secondary battery. In this case, control is performed to reduce the efficiency of regenerative control or the drive efficiency of auxiliary equipment

Method used

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  • Fuel cell vehicle
  • Fuel cell vehicle
  • Fuel cell vehicle

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Embodiment approach

[0021] figure 1 It is a schematic diagram showing the schematic configuration of the fuel cell vehicle 20 in the embodiment. The fuel cell vehicle 20 includes a fuel cell system 30 , a drive motor 40 , a friction brake 50 , an accelerator pedal 70 , a brake pedal 72 , a vehicle speed detector 60 , front wheels FW, and rear wheels RW. The fuel cell system 30 includes a fuel cell 100 , a power storage device 421 , and a control device 80 .

[0022] The fuel cell vehicle 20 is driven or braked according to the operation of the accelerator pedal 70 and the brake pedal 72 . The drive motor 40 of this embodiment can generate regenerative electric power. In addition, the drive motor 40 drives the fuel cell vehicle 20 . That is, the drive motor 40 can operate in a traction mode for driving the fuel cell vehicle 20 and a regenerative mode for braking the fuel cell vehicle 20 . The drive motor 40 in the traction mode receives power from the fuel cell system 30 to rotate at least one...

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Abstract

The invention relates to a braking control unit of a fuel cell vehicle which is configured to, in a period during which the fuel cell vehicle is being braked in response to a braking request, (i) whenan estimated amount of stagnant water is less than a predetermined second water amount less than a first water amount, limit an upper limit electric power of a regenerated electric power resulting from regenerative operation to a predetermined first value or below, and (ii) when the estimated amount of stagnant water is greater than or equal to the second water amount, execute an upper limit changing process of setting an upper limit electric power to a second value lower by a predetermined value than the first value.

Description

technical field [0001] The present invention relates to the technology of fuel cell vehicles. Background technique [0002] Conventionally, a fuel cell vehicle including a fuel cell and a regenerable drive motor is known (JP 2017-157270). In the conventional technology, when the secondary battery cannot be charged with all the electric power generated by the drive motor, there is a difference in the excess electric power obtained by subtracting the electric power distributed to the auxiliary equipment from the excess electric power that cannot be charged to the secondary battery. In this case, control is performed to reduce the efficiency of the regenerative control or the driving efficiency of the auxiliary machine. [0003] In a fuel cell vehicle, electric power generated by regenerative control of a drive motor and electric power generated by a fuel cell (generated electric power) are included. Generated power may be generated by sudden power generation that does not de...

Claims

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Application Information

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IPC IPC(8): B60L7/10B60L50/70B60L50/72B60L58/30H01M8/04082H01M8/04119
CPCB60L7/10B60L50/70B60L50/72B60L58/30H01M8/04156H01M8/04201H01M2250/20H01M8/04089H01M16/006H01M8/04492H01M8/04179H01M2250/402B60L7/26B60L15/2009B60L50/75B60L58/40Y02E60/10Y02E60/50Y02B90/10Y02T10/64Y02T10/70Y02T10/72Y02T90/40H01M2220/20H01M8/04843H01M8/04111
Inventor 大浦淳一难波良一
Owner TOYOTA JIDOSHA KK