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Fuel cell system

A fuel cell system and fuel cell technology, used in fuel cells, fuel cell additives, transportation fuel cell technologies, etc., can solve problems such as the decline in output efficiency of fuel cell systems, reduce charge and discharge losses, prevent fuel deterioration, The effect of improving output efficiency

Inactive Publication Date: 2012-11-14
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, since the frequency of charging and discharging of the battery increases, power loss accompanying charging and discharging may occur, and there is a risk that the output efficiency of the fuel cell system may decrease.

Method used

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no. 1 Embodiment approach

[0046] 1. Explanation of the overall structure

[0047] [1-1. Overall composition]

[0048] figure 1 This is a schematic overall configuration of a fuel cell vehicle 10 (hereinafter referred to as "FC vehicle 10") equipped with a fuel cell system 12 (hereinafter referred to as "FC system 12") according to the first embodiment of the present invention. picture. figure 2 is a block diagram of the power system of the FC vehicle 10 . Such as figure 1 as well as figure 2 As shown, the FC vehicle 10 includes a running motor 14 and an inverter 16 in addition to the FC system 12 .

[0049] The FC system 12 has a fuel cell module 18 (hereinafter referred to as "FC module 18"), a high-voltage battery 20 (hereinafter also referred to as "battery 20") (power storage device), and a DC / DC converter 22 , and the electronic control unit 24 (hereinafter referred to as "ECU24").

[0050] [1-2. Drive system]

[0051] The electric motor 14 generates driving force based on electric power...

no. 2 Embodiment approach

[0191] The hardware configuration of the second embodiment is basically the same as that of the first embodiment. Hereinafter, the same reference numerals are used for the same constituent elements. In the second embodiment, the method of energy management of the FC system 12 by the ECU 24 is different from that in the first embodiment.

[0192] 1. Energy management of FC system 12

[0193] Figure 23 It shows that the energy management of the FC system 12 is performed by the ECU 24 in the second embodiment ( Figure 5 The flowchart of S3). and Figure 12 Similarly to step S21, in step S81, ECU 24 determines whether or not the idling power generation suppression mode is selected. Specifically, ECU 24 determines whether or not vehicle speed V is equal to or less than threshold value THV1 and system load Psys is equal to or less than threshold value THPsys1 as conditions of the idling power generation suppression mode. If the vehicle speed V is not equal to or less than th...

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Abstract

In an FC system (12) of an FC vehicle (10), if a control device (24) determines that conditions of an idling power generation suppression mode of a FC (40) are satisfied, the control device sets the voltage of the FC to a predetermined voltage value outside a voltage range (R3) where an oxidation-reduction of platinum proceeds, and controls a reactant gas supply apparatus (44, 60, 64, 66) to change a supply amount of air such that the FC (40) has an output in accordance with the electric power required by a load (30).

Description

technical field [0001] The present invention relates to a fuel cell system including a fuel cell, an electric storage device capable of storing electric power from the fuel cell, and a load supplied with electric power from at least one of the fuel cell and the electric storage device. Background technique [0002] In the prior art, in order to suppress the deterioration of fuel cells used in fuel cell vehicles, etc., a fuel cell system has been proposed that avoids the oxidation-reduction potential to generate electricity from the fuel cell (Japanese Patent Application Laid-Open No. 2011-015580 (hereinafter referred to as " JP2011-015580A")). In the fuel cell system disclosed in JP2011-015580A, when the required power generation (P*) (required load) is smaller than a predetermined threshold value (Pthr), gas supply to the fuel cell is stopped and the power generation stop mode is entered. In the power generation stop mode, the voltage of the fuel cell is set to a voltage l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H01M8/04
CPCY02T90/34H02J7/00B60L11/1887H01M8/0488Y02E60/50H01M8/04753H01M8/04619B60L2210/14Y02T10/7225B60L58/40Y02T10/70Y02T10/72Y02T90/40
Inventor 数野修一佐伯响五十岚大士
Owner HONDA MOTOR CO LTD
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