EP1559157A2 - Procede et dispositif pour faire fonctionner un vehicule automobile a moteur electrique - Google Patents

Procede et dispositif pour faire fonctionner un vehicule automobile a moteur electrique

Info

Publication number
EP1559157A2
EP1559157A2 EP03717235A EP03717235A EP1559157A2 EP 1559157 A2 EP1559157 A2 EP 1559157A2 EP 03717235 A EP03717235 A EP 03717235A EP 03717235 A EP03717235 A EP 03717235A EP 1559157 A2 EP1559157 A2 EP 1559157A2
Authority
EP
European Patent Office
Prior art keywords
current
voltage supply
supply unit
unit
temperature
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.)
Withdrawn
Application number
EP03717235A
Other languages
German (de)
English (en)
Inventor
Martin Georgii
Axel Krause
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1559157A2 publication Critical patent/EP1559157A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04559—Voltage of fuel cell stacks
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
    • B60L58/34—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by heating
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • 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
    • H01M8/04858—Electric variables
    • H01M8/04925—Power, energy, capacity or load
    • H01M8/04947—Power, energy, capacity or load of auxiliary devices, e.g. batteries, capacitors
    • 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
    • Y02E60/30—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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. 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
    • 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 method for operating an electrically driven motor vehicle and a device therefor.
  • a gaseous fuel usually hydrogen
  • an oxygen-rich gas is often still present in the fuel cell unit or in the supply lines, and electrical energy is generated which is no longer used. If the fuel cell unit remains exposed to the high voltage generated, this can damage the fuel cell system and endanger service personnel, for example during inspections and / or repairs. Similar safety-relevant problems are known from the use of batteries.
  • a method and a device for operating a fuel cell system are known from US Pat. No. 5,023,150.
  • a switching element is provided which is normally closed and which can be controlled via a control unit in order to connect a fuel cell unit with a discharge resistor in parallel. As a result, the fuel cell unit can be discharged after being switched off.
  • the invention is characterized in that the discharging of the switched-off current / voltage supply unit is advantageously carried out using components already present in the motor vehicle. This avoids packaging problems and additional component costs.
  • the current / voltage supply unit is discharged via a temperature-dependent resistor.
  • FIG. 1 is a schematic representation of a current / voltage supply unit with a connected circuit
  • Fig. 2 is a schematic representation of a current / voltage supply unit with a discharge circuit.
  • a current / voltage supply unit 1 shows a schematic illustration of a current / voltage supply unit 1 with a connected circuit, not designated in any more detail.
  • electricity / Power supply unit 1 A fuel cell unit and / or a battery is preferably used.
  • a control or distribution unit 2 is usually connected to the current / voltage supply unit 1 via lines, which are not specified, and which distributes the generated electrical energy to further electrical modules which are represented by the consumer or the load 3.
  • the control and / or distribution unit 2 usually contains an internal current / voltage supply, not shown, which is fed by the current / voltage supply unit 1, and a DC / DC converter, not shown, which generates the current / voltage supply unit 1 Voltage converted to the level of the operating voltage of the consumer 3.
  • the control and / or distribution unit 2 distributes electrical energy, for example, to measuring circuits connected to the control and / or distribution unit 2.
  • the internal current / voltage supply not shown, supplies in particular the control and / or distribution unit 2 with inherent microcontroller systems, driver circuits, converters and / or other circuits inherent in the control and / or distribution unit with electrical energy.
  • the internal current / voltage supply preferably also has a converter (not shown), in particular a DC-DC converter.
  • the internal voltage level of the control and / or distribution unit 2 is preferably below the voltage level of the power / voltage supply unit 1.
  • An electrical drive motor (not shown) and / or an electrical system can also be connected to the control or distribution unit 2 as the load 3.
  • the voltage still present at the current / voltage supply unit 1 is forcibly reduced in order to prevent degradation of the current / voltage supply unit 1 and to ensure contact protection. Since the internal power supply to the control and / or distribution Unit 2 happens via the current / voltage supply unit 1, this internal voltage supply continues to be supplied with electrical energy even after the current / voltage supply unit 1 has been switched off until the current / voltage supply unit 1 or the capacities of the control and / or Distribution unit 2 upstream, unspecified supply circuit is discharged to a lower limit.
  • the discharge of the current / voltage supply unit 1 thus takes place inevitably via the control and / or distribution unit 2 or its internal current / voltage supply and the consumers connected to it, such as, for example, microcontrollers and measuring circuits.
  • the internal current / voltage supply and / or the consumers connected to it are advantageously designed such that the current / voltage supply unit discharges to below 50 V within 60 seconds.
  • the control and / or distribution unit 2 can be designed in such a way that it can be
  • Power supply units 1 can be supplied with electrical energy.
  • a supply from a vehicle battery and from a fuel cell unit can be provided.
  • the supply can take place in parallel or in series through the various current or voltage sources.
  • a measuring circuit with hydrogen sensors is usually provided in the vehicle, which monitors the concentration of hydrogen.
  • the measuring circuit is usually connected to the fuel cell unit via an internal current or voltage supply of a control and / or distribution unit 2. Since hydrogen is a highly flammable gas, it makes sense to monitor the hydrogen concentration even when the fuel cell unit is switched off, for example when a vehicle is parked.
  • the measuring circuit with the hydrogen sensors can preferably be supplied with electrical current by the discharge current of the fuel cell unit via the internal current or voltage supply of the control and / or distribution unit.
  • FIG. 2 shows a schematic representation of a current / voltage supply unit 1 with a further preferred embodiment of a discharge circuit.
  • the discharge takes place via a temperature-dependent resistor 4.
  • a switching element 5 can be connected in series with the temperature-dependent resistor 4.
  • the temperature-dependent resistor 4 is then connected in parallel to the current / voltage supply unit 1 and is discharged.
  • the switching element 5 can preferably be supplied with electrical current by the discharge current.
  • the temperature-dependent resistor 4 is preferably a PTC thermistor or a PTC element and has a positive temperature coefficient.
  • the temperature-dependent resistor 4 has a low resistance value at low temperatures and a high resistance value at high temperatures.
  • the resistor 4 is preferably designed in such a way that in the normal working voltage range of the current / voltage supply unit 1 only a little electrical power is consumed by the temperature-dependent resistor 4.
  • the normal operating voltage range for a fuel cell unit is usually between 250 V and 450 V. However, fuel cell units with other operating voltage ranges can also be used.
  • the preferably relatively high working voltage of the current / voltage supply unit 1 leads to the temperature at the resistor 4 being relatively high during operation of the current / voltage supply unit 1, and thus its resistance value is likewise correspondingly high.
  • the switching element 5 can therefore be dispensed with, since the function of the high resistance value of the resistor 4 during operation of the current / voltage supply unit corresponds to that of an opened switching element 5.
  • the voltage slowly drops, the temperature of the resistor 4 drops and thus its resistance value also drops. The discharge rate thus increases.
  • the temperature-dependent resistor is advantageously dimensioned such that, after the current / voltage supply unit 1 has been switched off, the applied voltage drops to below 50 V within 60 seconds.
  • PTC elements can be used to protect batteries by self-regulatingly protecting the battery against excessive temperatures and discharge currents (US 4,255,698).
  • consumers 6 can be connected via lines that are not specified in any more detail.
  • Such consumers 6 are, for example, an electric drive motor and an electrical system.
  • the switching element 5 is preferably only opened again when the amount of oxidant or oxygen-rich gas which is present in the fuel cell unit or in the supply lines has dropped below a lower limit value , 'Discharging poses a risk to the fuel cell system and, in particular, to stressful heating of the catalytic fuel prevented by an oxidation occurring after the shutdown.
  • the switching element 5 or the temperature-dependent resistor is advantageously connected to ground, for example the vehicle body, via a further switching element (not shown). Repairs and inspections can thus be carried out safely.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif pour faire fonctionner un véhicule automobile qui comprend une unité d'alimentation en courant/tension, en particulier une unité pile à combustible et/ou une batterie. Lorsque l'unité d'alimentation en courant/tension est coupée, elle est déchargée de force par une unité de commande et/ou de distribution ou par une résistance dépendant de la température.
EP03717235A 2002-05-28 2003-03-26 Procede et dispositif pour faire fonctionner un vehicule automobile a moteur electrique Withdrawn EP1559157A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10223672 2002-05-28
DE10223672A DE10223672A1 (de) 2002-05-28 2002-05-28 Verfahren zum Betreiben eines elektrisch angetriebenen Kraftfahrzeugs und Vorrichtung hierzu
PCT/EP2003/003116 WO2003099604A2 (fr) 2002-05-28 2003-03-26 Procede et dispositif pour faire fonctionner un vehicule automobile a moteur electrique

Publications (1)

Publication Number Publication Date
EP1559157A2 true EP1559157A2 (fr) 2005-08-03

Family

ID=29432377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03717235A Withdrawn EP1559157A2 (fr) 2002-05-28 2003-03-26 Procede et dispositif pour faire fonctionner un vehicule automobile a moteur electrique

Country Status (5)

Country Link
US (1) US20060124367A1 (fr)
EP (1) EP1559157A2 (fr)
JP (1) JP2005532770A (fr)
DE (1) DE10223672A1 (fr)
WO (1) WO2003099604A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7568538B2 (en) * 2005-02-02 2009-08-04 Mattel, Inc. Children's ride-on vehicle charging assemblies with back feed protection
US20100035090A1 (en) * 2008-08-06 2010-02-11 Gm Global Technology Operations, Inc. Off-state degradation prevention in a fuel cell without on-state losses using self controlled element
KR101281739B1 (ko) * 2011-03-11 2013-07-04 한국과학기술원 온라인 전기자동차의 배터리 충전 및 방전 제어 방법 및 장치
CN104136262A (zh) * 2012-02-23 2014-11-05 丰田自动车株式会社 电动车
FR2992112B1 (fr) * 2012-06-19 2015-01-09 Valeo Systemes Thermiques Procede et systeme pour la mise en veille et le reveil d'un module de commande de vehicule automobile electrique
CN115377467A (zh) * 2022-09-20 2022-11-22 浙江天能氢能源科技有限公司 一种燃料电池膜电极及制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255698A (en) * 1979-01-26 1981-03-10 Raychem Corporation Protection of batteries
US5023150A (en) * 1988-08-19 1991-06-11 Fuji Electric Co., Ltd. Method and apparatus for controlling a fuel cell
JP2932607B2 (ja) * 1990-05-23 1999-08-09 日産自動車株式会社 電気自動車
JPH0589900A (ja) * 1991-09-27 1993-04-09 Aisin Seiki Co Ltd 燃料電池
JPH06225451A (ja) * 1993-01-22 1994-08-12 Sanyo Electric Co Ltd 電池の過電流保護回路
US6331763B1 (en) * 1998-04-15 2001-12-18 Tyco Electronics Corporation Devices and methods for protection of rechargeable elements
DE10059393A1 (de) * 2000-11-30 2002-06-20 Siemens Ag Gleichstromversorgungseinrichtung und Verfahren zum Abschalten eines Brennstoffzellenblocks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03099604A2 *

Also Published As

Publication number Publication date
JP2005532770A (ja) 2005-10-27
DE10223672A1 (de) 2003-12-11
WO2003099604A3 (fr) 2005-06-09
WO2003099604A2 (fr) 2003-12-04
US20060124367A1 (en) 2006-06-15

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