WO2015162017A2 - Système de pile à combustible régénérative pour véhicule automobile et procédé pour faire varier une température dans l'habitacle d'un véhicule - Google Patents

Système de pile à combustible régénérative pour véhicule automobile et procédé pour faire varier une température dans l'habitacle d'un véhicule Download PDF

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Publication number
WO2015162017A2
WO2015162017A2 PCT/EP2015/057746 EP2015057746W WO2015162017A2 WO 2015162017 A2 WO2015162017 A2 WO 2015162017A2 EP 2015057746 W EP2015057746 W EP 2015057746W WO 2015162017 A2 WO2015162017 A2 WO 2015162017A2
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WO
WIPO (PCT)
Prior art keywords
fuel cell
cell device
regenerative fuel
battery
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/057746
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German (de)
English (en)
Other versions
WO2015162017A3 (fr
Inventor
Dietmar Steiner
Kai Weeber
Annika UTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2015162017A2 publication Critical patent/WO2015162017A2/fr
Publication of WO2015162017A3 publication Critical patent/WO2015162017A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
    • H01M8/184—Regeneration by electrochemical means
    • H01M8/186—Regeneration by electrochemical means by electrolytic decomposition of the electrolytic solution or the formed water product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M16/00—Structural combinations of different types of electrochemical generators
    • H01M16/003—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
    • H01M16/006—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04701—Temperature
    • H01M8/04738—Temperature of auxiliary devices, e.g. reformer, compressor, burner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the invention relates to a regenerative fuel cell device for a motor vehicle. Likewise, the invention relates to aharitemperiersystem for ei motor vehicle and an energy supply system for an electric
  • the invention relates to a method for varying a temperature in a vehicle interior of a vehicle equipped with a regenerative fuel cell device
  • the hydrogen tank can be filled with a hydrogen produced by an electrolyzer.
  • the electrolyzer and the battery are connectable to an external power source such that first the battery is rechargeable, and from exceeding a predetermined state of charge of the battery, the energy of the external power source for generating hydrogen for filling the hydrogen tank is usable. If energy is required to operate an electric machine as a drive unit, then its energy is first used up to a predetermined state of charge of the battery, and then hydrogen is consumed from the hydrogen tank in an internal combustion engine as fuel for generating energy. Instead of the electrolyzer and the internal combustion engine and a reversible fuel cell should be used. Disclosure of the invention
  • the invention provides a regenerative fuel cell device
  • a vehicle temperature control system for a motor vehicle a power supply system for an electric drive motor of a vehicle, an electric vehicle, and a method of varying a temperature in a vehicle interior of a vehicle equipped with a regenerative fuel cell device
  • the present invention provides possibilities for heating or cooling a vehicle interior of a motor vehicle by utilizing the waste heat of the regenerative fuel cell device occurring during the endothermic electrolysis and / or the reversible exothermic reaction. As will be explained in more detail below, in one use of the present invention, the heating or cooling of the vehicle interior to one for a
  • the present invention thus contributes to energy saving and environmental protection.
  • the vehicle interior by means of the
  • Heat transfer device at least partially forwarded waste heat of the regenerative fuel cell device heated.
  • the waste heat generated in the regenerative fuel cell device allows a generous heating of the vehicle interior even at extreme outside temperatures.
  • the vehicle interior can be cooled by means of the sorption refrigeration machine.
  • the sorption refrigeration machine In addition to a comfortable, energy-saving and low-power winter driving can thus Even at extremely summery temperatures a pleasant temperature in the vehicle interior can be realized while maintaining the above advantages.
  • Fuel cell device includes the sorption refrigerator a
  • Absorption chiller and an expeller is as a subunit of the
  • Sorptions holtemaschine heated by means of at least the part of the waste heat of the regenerative fuel cell device. In this way, the vehicle interior can be cooled energy-saving and environmentally friendly.
  • the sorption refrigeration machine can also comprise an adsorption refrigeration machine, as a result of which a cold storage can be realized.
  • the regenerative fuel cell device is connectable directly or indirectly to an electric drive motor of the vehicle such that the current generated by the regenerative fuel cell device can be output to the electric drive motor.
  • the regenerative fuel cell device is connectable directly or indirectly to an electric drive motor of the vehicle such that the current generated by the regenerative fuel cell device can be output to the electric drive motor.
  • Fuel cell device which for heating or cooling of
  • Vehicle interior can be used so advantageous, so can also
  • the regenerative fuel cell device can be used as a supplement to a battery, such as a conventional Li-ion battery. Due to the additional use of
  • Regenerative fuel cell device together with the battery may have a storage capacity and an energy density of one of the regenerative
  • Energy supply system can be increased.
  • the potential weight advantage of the regenerative fuel cell device over an additionally used second battery can be used.
  • Fuel cell device designed to split as endothermic electrolysis, consuming the provided stream of water into hydrogen and oxygen and to generate electricity by means of the reversible exothermic reaction of hydrogen and oxygen to water.
  • a regenerative Fuel cell device is relatively easy and inexpensive to produce. It should be understood, however, that the invention is not limited to the use of this type of regenerative fuel cell device. Instead, other exothermic and endothermic reactions can be carried out by means of the regenerative fuel cell device, wherein the waste heat generated is used for heating or cooling the vehicle interior.
  • Heat transfer device and / or sorption chiller are heat transfer devices and / or sorption chiller.
  • a power supply system for an electric drive motor of a vehicle which comprises such a regenerative fuel cell device and a battery, by means of which the electric drive motor can be energized, wherein the regenerative fuel cell device and the battery are electrically connected to a common electrical interface are via which a charging current from an external power source such to the regenerative fuel cell device and the battery is provided that the battery is rechargeable and at least one of the regenerative fuel cell device and the battery.
  • Fuel cell device attached memory for an electrolysis product produced in the endothermic electrolysis is refillable. Thus, a "refueling" of the power system despite the additional use of the
  • the electric drive motor in a booster operation at the same time by means of the battery and by means of the regenerative fuel cell device can be supplied with power.
  • Fuel cell device contributes to increase the maximum motor current.
  • the drive motor and / or the generator-generated generator current can be provided to the regenerative fuel cell device and to the battery such that the battery can be charged and the at least one store can be filled up.
  • the present invention thus also contributes to increasing the energy recovery in recuperative braking.
  • Braking device or with such a power supply system realizes the advantages described above.
  • Fuel cell device equipped motor vehicle The method is further developable according to the embodiments of the regenerative fuel cell device and the power supply system.
  • FIG. 2 is a flowchart for explaining an embodiment of the present invention
  • FIGS. 1 a to 1 d show schematic representations and coordinate systems for explaining an operating mode of an embodiment of the regenerative fuel cell device.
  • the regenerative fuel cell device 10 shown schematically in FIG. 1 a can be used in a motor vehicle, in particular in an electric vehicle or in a hybrid vehicle.
  • the regenerative fuel cell device 10 is configured to perform endothermic electrolysis using a supplied current and generate current by means of an exothermic reaction reversible to the electrolysis.
  • the regenerative fuel cell device 10 is designed to endothermic electrolysis consumption of the
  • Fuel cell device 10 in its activated state so controlled that either the endothermic electrolysis or the exothermic reaction by means of the regenerative fuel cell device 10 is executable.
  • a waste heat 12 of the regenerative fuel cell device 10 is generated.
  • the regenerative fuel cell device 10 is additionally designed and directly or indirectly connected to a heat transfer device 14 of the motor vehicle and / or to a sorption chiller 16 of the
  • Heat transfer device 14 is forwarded and / or at least one subunit of the sorption chiller 16 by means of at least a portion of the waste heat 12 of the regenerative fuel cell device 10 is heated.
  • the regenerative fuel cell device 10 is connected both to the heat transfer device 14 and to the heat transfer device 14 Sorption chiller 16 connected.
  • the regenerative fuel cell device 10 is connected both to the heat transfer device 14 and to the heat transfer device 14 Sorption chiller 16 connected.
  • Fuel cell device 10 may also be part of a (compact)
  • the regenerative fuel cell device 10 can thus together with the
  • Heat transfer device 14 and / or the sorption chiller 16 may be formed as a (compact) structural unit.
  • Heat transfer device 14 is connected, the at least partially provided to the heat transfer device 14 waste heat 12 of the regenerative fuel cell device 10 in a vehicle interior of a (with the regenerative fuel cell device 10 and the
  • Heat Transfer device 14 equipped), in particular in a passenger compartment, forwarded. That way is the
  • Fuel cell device 10 heated.
  • Vehicle interior are used, whereby at least less fuel and / or less electrical energy is needed for vehicle heating.
  • Vehicle interior be sufficient.
  • the usability described here of the waste heat 12 of the regenerative fuel cell device 10 thus reduces energy consumption of a vehicle when heating.
  • the sorption chiller 16 may in particular be an absorption chiller 16 or an adsorption chiller
  • Sorptions sakeltemaschine 16 are cooled. Thus, in this case too the waste heat 12 of the regenerative fuel cell device 10 is used to
  • the waste heat 12 of the regenerative fuel cell device 10 may suffice for comfortably cooling the vehicle interior, so that no fuel consumption and no consumption of electrical energy for cooling the vehicle interior are necessary. Also when cooling the
  • Vehicle interior energy can thus be saved.
  • Fuel cell device 10 (especially in fuel cell operation) often a waste heat 12, which corresponds to at least a thermal power of at least 6.5 kW. This is sufficient for a heating operation, in which even at extreme outside temperatures a good heating of the vehicle interior is achieved to a comfortable temperature. Even for reliable cooling of the vehicle interior to a comfortable temperature, the thermal power of 6.5 kW is sufficient, even in hot outside temperatures.
  • Heat transfer device 14 and / or to the sorption chiller 16 can be repaired. A driver is thus encouraged to buy / use an environmentally friendly and quiet electric vehicle.
  • Sorptions holtemaschine 16 are cached in a memory. In this way, even during a prolonged presence of the regenerative fuel cell device 10 in a deactivated state, the waste heat 12 can be at least partially still used for heating or cooling the vehicle interior.
  • Sorptions holtemaschine 16 is formed as an absorption chiller 16, wherein an expeller 18 as a subunit of the sorption chiller 16 by means of at least the part of the waste heat 12 of the regenerative
  • the sorption refrigeration machine 16 is specifically a LiBr / H 2 O absorption refrigeration system and thus has water as a refrigerant in a refrigerant circuit 20 and an aqueous lithium bromide solution as a solvent in a solvent circuit 22.
  • liquid water is sprayed by a pump 26 onto a pipe 28.
  • the pressure present in the evaporator 24 is kept so low that the sprayed water on the pipe 28 evaporates and thus a cooling over the pipe
  • Vehicle interior is usable.
  • Extractor 18 remaining concentrated solvent can be recycled via a solution-heat exchanger 42 in the absorber 32.
  • the water vapor escaping into the condenser 40 condenses there to water, which can be pumped again by means of the pump 26 from the condenser 40 via a line 44 into the evaporator 24 and then sprayed onto the pipeline 28.
  • the waste heat 12 of the regenerative fuel cell device 10 provided to the sorption refrigeration machine 16 can thus be used to maintain a cycle which permits continuous cooling of the cold water conducted via the pipeline 28.
  • a waste heat of the process illustrated by means of FIG. 1b can be dissipated via external heat exchangers 46 and 48 which are operated, for example, by means of a water from a cooling tower and / or by means of a cooling water provided otherwise. Since the pumps 26 and 34 hardly consume energy, the energy required to maintain the process is almost exclusively covered by the waste heat 12 of the regenerative fuel cell device 10. This is a vehicle cooling, which hardly consumes the energy resources of the motor vehicle, possible.
  • Sorptions sakeltemaschine 16 are used so that even with hot outside temperatures of the vehicle interior by means of the waste heat 12 is pleasantly cooled.
  • an adsorption chiller ie a sorption chiller 16 with a solid sorbent
  • a sorption chiller 16 can be used as sorption chiller 16.
  • Such a sorption chiller 16 can be used in particular as a cold storage using a waste heat 12.
  • Fig. La is the regenerative
  • Fuel cell device 10 advantageously so directly or indirectly connected to an electric drive motor 50 of the motor vehicle / connected, that the power generated by the regenerative fuel cell device 10 to the electric drive motor 50 can be output.
  • the regenerative fuel cell device 10 advantageously so directly or indirectly connected to an electric drive motor 50 of the motor vehicle / connected, that the power generated by the regenerative fuel cell device 10 to the electric drive motor 50 can be output.
  • Fuel cell device 10 forms in particular together with a battery 52, which is for example a lithium-ion battery
  • the electric drive motor 50 can be energized.
  • the regenerative fuel cell device 10 thus assists the battery 52. This contributes to an increase in the storage capacity and energy density of the power supply system consisting of the components 10 and 52, especially for an electric vehicle, over a conventional vehicle battery. In addition, in this way a life of the battery 52 can be increased by reducing the charging and discharging cycles incurred. This also causes a decoupling of power and energy content of the
  • Vehicle interior hardly requires energy of the battery 52 to set a comfortable temperature in the vehicle interior. This results in a significant reduction of the consumption of the energy stored on the battery 52, in particular in an electric vehicle, whereby an additional protection of the battery 52 and a longer and further driving is enabled by means of the energy stored on the battery 52.
  • the regenerative fuel cell device 10 and the battery 52 are electrically connected to a common electrical interface 54, via which a charging current from an off-vehicle power source 56 is provided to the regenerative fuel cell device 10 and the battery 52 that the battery 52 and at least one rechargeable the regenerative fuel cell device 10 is connected to accumulators 58a and 58b for an electrolysis product produced in the endothermic electrolysis is fillable.
  • Refilling the at least one memory 58a and 58b is not necessary.
  • Fuel cell device 10 and to the battery 52 can be made either simultaneously or in a predetermined order.
  • the common electrical interface 54 may, for example, a
  • Fuel cell device 10 to be controllable. For example, that can
  • Fuel cell device 10 can be supplied with electric power. In a normal operation of the electric drive motor 50, however, the current flow between the components 10, 50 and 52 can be controlled so that either first the energy of the battery 52 or first on the
  • regenerative fuel cell device 10 is stored in the form of electrolysis products stored energy for operating the electric drive motor 50.
  • the regenerative fuel cell device 10 and the battery 52 may be connected to the regeneratively operable electric drive motor 50 and / or a generator (not shown) of the motor vehicle
  • the generator-operable electric drive motor 50 and / or the Generator when braking the motor vehicle
  • generator power supplied to the regenerative fuel cell device 10 and the battery 52 such that the battery 52 can be charged and the at least one memory 58a and 58b (by performing the endothermic electrolysis) can be filled.
  • the generator current can either simultaneously or in a predetermined
  • Fuel cell device 10 be prepared.
  • the thus realizable division of the generator current to the battery 52 and to the regenerative fuel cell device 10 causes an increase in the recovered energy portion during recuperative braking.
  • the generator current output to the battery 52 is reduced without a reduction in the
  • Fuel cell device by way of example an electrolysis unit 62 (or an electrolyzer) and a fuel cell unit 64.
  • the electrolysis unit 62 is designed to split water into hydrogen and oxygen while consuming a provided current / charging current.
  • de-ionized water may be added to a regenerative tank 66
  • Fuel cell device 10 can be removed.
  • Fuel cell unit 64 the oxyhydrogen gas reaction for power generation is executable.
  • the regenerative fuel cell apparatus 10 may also have a compact electrolysis and fuel cell unit.
  • the regenerative fuel cell device of FIG. 1a is designed as a closed system, so that in addition to a hydrogen storage 58a for storing the hydrogen produced in the endothermic electrolysis, an oxygen storage 58b for storing the simultaneously obtained oxygen is present in the regenerative fuel cell device 10.
  • the electrolysis unit 62 is preferably designed as a constant pressure electrolyzer, so that both the generated hydrogen and the obtained oxygen are pressurized to the memory 58a and 58b are discharged.
  • the graph gH2 shown in the coordinate system of Fig. 1c indicates a relation between one present in the hydrogen storage 58a
  • Hydrogen storage 58a again. Accordingly, a relation between a storage pressure p02 present in the oxygen storage 58b and a sufficient volume V02 of the oxygen storage 58b is shown by the graph g02 in the coordinate system of FIG. 1d.
  • Storage pressure pH2 and p02 may, for example, be 700 bar in both accumulators 58a and 58b, so that a volume VH2 of 15.5 liters and for the oxygen accumulator 58b a volume V02 of 7.5 liters is sufficient for the hydrogen storage 58a. As a rule, a re-compaction is not necessary. (If desired, a hydrogen post-compression unit may be used.) It should be noted that at these volumes VH2 and V02 for the reservoirs 58a and 58b, the regenerative fuel cell device 10 can be formed with a total volume of about 38 liters. The total volume of the regenerative fuel cell device 10 can thus still below the
  • volume of the battery 52 (in a lithium-ion battery typically 50 liters) are.
  • Equipping the regenerative fuel cell device 10 with the deionized water tank 66 is optional.
  • the regenerative fuel cell device 10 may also be configured as an open system, wherein the fuel cell unit 64 uses atmospheric oxygen to perform the oxyhydrogen reaction. In this case, the oxygen produced by the electrolysis unit 62 is released into the atmosphere.
  • Atmosphere are delivered.
  • regenerative Fuel cell device 10 as an open system whose total volume is about 35.5 liters.
  • FIG. 2 is a flow chart for explaining an embodiment of the method of varying a temperature in a vehicle interior of a regenerative fuel cell device equipped one
  • Vehicle interior of a motor vehicle equipped with a regenerative fuel cell device is executed at least one of the method steps Sl and S2:
  • Fuel cell device which is obtained at least partially forwarded to a heat transfer device of the motor vehicle when carrying out an endothermic electrolysis consuming a supplied current and / or at a reversible to the electrolysis exothermic reaction for power generation.
  • the at least partially provided waste heat can therefore be forwarded into a vehicle interior such that the vehicle interior is heated by means of the waste heat of the regenerative fuel cell device which is at least partially passed on by the heat transfer device.
  • step S2 at least one subunit of a
  • Sorptions sakeltemaschine heated by at least a portion of the waste heat of the regenerative fuel cell device can be in this way the vehicle interior by means of
  • Sorption chiller are cooled.
  • the method steps S1 and S2 can be carried out in any order and with as many repetitions as desired. On a new description of the advantages realized with it is omitted here.

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  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un système de pile à combustible régénérative (10), destiné à un véhicule automobile, qui est adapté pour effectuer une électrolyse endothermique en utilisant un courant fourni et pour produire un courant électrique au moyen d'une réaction exothermique réversible par rapport à l'électrolyse endothermique. Le système de pile à combustible régénérative (10) est en outre adapté et connectable directement ou indirectement à un dispositif de transfert thermique (14) du véhicule et/ou à une machine frigorifique à sorption (16) du véhicule de façon à pouvoir transférer la chaleur perdue (12) du système de pile à combustible régénérative (10) au moins en partie au dispositif de transfert thermique (14) et/ou à pouvoir chauffer au moins un sous-ensemble (18) de la machine frigorifique à sorption (16) à l'aide d'une partie au moins de la chaleur perdue (12) du système de pile à combustible régénérative (10). L'invention concerne en outre un procédé permettant de faire varier une température dans l'habitacle d'un véhicule automobile équipé d'un système de pile à combustible régénérative (10).
PCT/EP2015/057746 2014-04-23 2015-04-09 Système de pile à combustible régénérative pour véhicule automobile et procédé pour faire varier une température dans l'habitacle d'un véhicule Ceased WO2015162017A2 (fr)

Applications Claiming Priority (2)

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DE102014207597.1 2014-04-23
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