WO2019110588A1 - Dispositif de protection et procédé de protection d'un réseau haute tension ainsi que système d'entraînement électrique - Google Patents

Dispositif de protection et procédé de protection d'un réseau haute tension ainsi que système d'entraînement électrique Download PDF

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Publication number
WO2019110588A1
WO2019110588A1 PCT/EP2018/083488 EP2018083488W WO2019110588A1 WO 2019110588 A1 WO2019110588 A1 WO 2019110588A1 EP 2018083488 W EP2018083488 W EP 2018083488W WO 2019110588 A1 WO2019110588 A1 WO 2019110588A1
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WO
WIPO (PCT)
Prior art keywords
monitoring circuit
voltage
electrical
temperature
interruption
Prior art date
Application number
PCT/EP2018/083488
Other languages
German (de)
English (en)
Inventor
Dirk Joachimsmeyer
Original Assignee
Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg
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 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg filed Critical Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg
Publication of WO2019110588A1 publication Critical patent/WO2019110588A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions
    • 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
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/10—Temporary overload
    • B60L2260/16—Temporary overload of electrical drive trains
    • B60L2260/167—Temporary overload of electrical drive trains of motors or generators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present invention relates to a protective device for securing a high-voltage network. Furthermore, the present invention relates to an electric drive system with such a protection device. Furthermore, the present invention relates to a method for securing a high-voltage network. In particular, the present invention relates to securing a high-voltage network for a vehicle.
  • the present invention will be described below in connection with the protection of a high-voltage network in a fully or partially electrically powered vehicle. Dar beyond, however, the present invention is also applicable to the fuse from any electrical wiring networks, in particular for securing any high-voltage networks.
  • Wholly or partially electrically powered vehicles are usually powered by an electrical energy storage, such as a traction battery. These electrical energy storage devices provide for the drive of the vehicle an electrical voltage whose height can be several hundred volts.
  • the high-voltage supply of the vehicle must be switched off centrally, for example in case of interruption of a Hochvoltsteckver- connection for a high-voltage component, so it can not come by a loose high-voltage connector or the like to an accident.
  • so-called domestic terlock circuits are used to ensure the Hochvoltsi safety of an electrical system, such as an electric drive train. In this case, a low-voltage strip conductor loop can be laid through the components to be monitored.
  • this trace loop un interrupted, for example, by opening a fastex connection between two components, so this interrup tion can be detected. Then, in the event of a detected interruption, the high-voltage supply in the vehicle can be switched off. For example, a contactor or other switching device can be opened in a battery module so that the high-voltage network in the vehicle is switched off.
  • the document DE 10 2015 107 053 Al discloses a plug connector part with a temperature-dependent Wegeinrich device.
  • the temperature-dependent switching device is formed to electrically disconnect a signal contact lement from a signal line upon the occurrence of heating.
  • the publication DE 10 2013 219 141 A1 discloses an interlock circuit for securing an electrical Bordnet zes in a vehicle. For this purpose, a conductor track loop for detecting an interruption between two current mirror circuits is connected.
  • the present invention provides a protective device for securing a high-voltage network, an electric drive system and a method for securing a high-voltage network with the features of the independent claims.
  • a protective device for securing a high-voltage network in particular for securing a high-voltage network of a driving tool, with a monitoring circuit and a Steuerein direction.
  • the control device is designed to detect an interruption in the monitoring circuit. Furthermore, the control device is designed to interrupt an energy supply of the high-voltage network when an interruption in the monitoring circuit has been detected.
  • the monitoring circuit comprises at least one temperature fuse. The temperature fuse in the monitoring circuit is designed to provide an electrical connection. fertil in the monitoring circuit when a predetermined overtemperature event occurs.
  • An electric drive system in particular an electrical cal drive system for a motor vehicle, with an electrical high-voltage power source, an electrical drive unit, which is powered by the electrical high-voltage power source, and a protective device according to the invention for securing a high-voltage network.
  • the electric drive unit may in particular comprise an electrical cal machine and a power converter.
  • the temperature fuse is designed to interrupt an electrical connection in the monitoring circuit when an over-temperature event occurs.
  • the method includes the steps of detecting a break in the monitoring circuit and disconnecting a power supply of the high voltage network when an interruption in the monitoring circuit has been detected.
  • the present invention is based on the finding that a high-voltage power source, such as the Trakomsbat battery of an electric vehicle when an error occurs in A high-voltage electrical system can feed a large amount of electrical energy into the fault. This electrical energy very quickly leads to an expansion of the error, which can be associated with a thermal event, such as a star ken overheating to a fire. If further electrical energy is fed into the fault location by the high-voltage energy source, then the thermal event at the fault location can not or at least can only be controlled with great difficulty.
  • the present invention provides a gel in the Re already existing high-voltage interlock to protect the high-voltage network to expand.
  • one or more thermal fuses in a monitoring circuit of the high-voltage interlock to integrate reindeer.
  • the Tempe raturfeld interrupt the monitoring circuit of the high-voltage interlock between two terminals of Temperatursi insurance and thus to a shutdown of the high volt Board network lead.
  • thermo fuses any components can be used ver, which lead to the interruption of a temperature to interrupt an electrical connection.
  • the Tempe ratur Klin thus provides initially between two connection points an electrical connection ready, which is interrupted after the triggering of the thermal fuse.
  • Such a temperature fuse can be arranged at almost any position within the monitoring circuit of the high-voltage interlock. In this way, exceeding a critical temperature can be monitored and detected at one or more points. As soon as the critical temperature is exceeded and the temperature fuse responds, the monitoring circuit of the high-voltage interlock is interrupted.
  • thermal fuses components o- assemblies which have no or at least a very small influence on the electrical conductivity and possibly other electrical cal properties of the monitoring circuit in the non-triggered state.
  • the monitoring circuit is not or at least not significantly influenced by the additionally introduced thermal fuses. In this way it is possible to expand ei nen conventional high-voltage interlock in a particularly simple and cost-effective manner.
  • the control device which detects an interruption in the monitoring circuit over and then switches off the Energy supply of the high-voltage network, for example be designed as a separate control device.
  • the electrical conductivity of the monitoring circuit can be checked by a separate module. If an interruption of the monitoring circuit is detected, the separate control device can signal this interruption to a corresponding switching device of the high-voltage power supply to interrupt the supply of further electrical energy from the energy source into the high-voltage network as a result of this signaling.
  • the separate control device provides a fault-free case, ie a ge closed monitoring circuit, a control signal from the controller to the switching device of the high-voltage power source, so that the high-voltage power source only as long electrical energy in the high voltage On-board power supply, as long as provided by the control device corre sponding signal.
  • a fault-free case ie a ge closed monitoring circuit
  • the high-voltage power source only as long electrical energy in the high voltage On-board power supply, as long as provided by the control device corre sponding signal.
  • the monitoring of the monitoring circuit is implemented centrally, i. the control device for monitoring the Matterwachungsstromkrei ses and the switching elements for coupling or disconnecting the high-voltage power source with the high-voltage electrical system are designed as a common unit.
  • the thermal fuse may comprise a bi-metallic switch, a PTC element and / or a fuse.
  • a bi-metallic switch a PTC element and / or a fuse.
  • any other components possible which can interrupt an electrical connection between two connection points when going over a limit temperature.
  • it can han elements in the PTC elements to components, which have increasing temperature with increasing electrical resistance, so that when a limit temperature is exceeded, the electrical resistance exceeds a pre-specified limit.
  • the temperature fuse may be a reversible temperature fuse element.
  • a reversible temperature fuse element a component is considered, for example, which interrupts an electrical connection between two connection points when passing a limit temperature.
  • the limit temperature is exceeded, the electrical resistance between the two connection points can increase significantly.
  • reversible temperature fuse elements can again provide an electrical connection between the two connection points, or the electrical resistance between the two connection points can drop significantly. In this way, such temperature protection elements can repeatedly detect a rise in temperature.
  • a drop in temperature by re-providing an electrical connection between the two connection points can be recognized again.
  • the temperature fuse may comprise an irreversible temperature fuse element.
  • An irreversibly temperature-fuse element can cause an electrical connection between two connection points when a temperature above a predetermined limit temperature is exceeded. interruptible. In such a case, even with a subsequent decrease in the temperature between the at the connection points of the thermal fuse further no electrical connection is made, so that the moni monitoring circuit remains open. Therefore, when an error occurs, particularly an increase in temperature, a durable reliable shutdown can be enabled.
  • the monitoring circuit may comprise a series circuit of a plurality of temperature fuses.
  • any number of two or more tempera ture Anlagenen possibly also differently designed Tem peraturfelden possible. Due to the series connection several rer temperature fuses each of the monitoring circuit in the monitoring of each of the Tem perature protection within the monitoring circuit reliably interrupted who the so that at several different spatial positioning NEN critical temperature increases can be detected.
  • the temperature fuse is arranged on a power-electronic component of an electric drive system.
  • the power electronic components of an electric drive system may be, for example, a power converter.
  • a thermal fuse vorgese hen At one or more Halbleitschaltele elements of a power converter, a thermal fuse vorgese hen.
  • semiconductor switching elements in power converters represent critical components in which an error can quickly lead to a thermal event.
  • other components of a converter for example, on capacitors, such as a DC link capacitor or similar Ehern, as well as any other components also provide a thermal fuse.
  • a temperature fuse can be arranged on a charging device for an electrical energy store. Also on the components of a Ladevor direction, in particular on semiconductor switching elements of a La devortechnik, such as a rectifier or similar Lichem, high amounts of electrical energy can be implemented, which can lead very quickly to a thermal event, especially in an error.
  • the La devorraum vehicle can be provided both within an electric or hybrid vehicle, as well as outside the electric or hybrid driving.
  • thermal fuses can be provided in a charging station, a wallbox, or any other external Ladeeinrich device.
  • control device may be configured to generate a continuous voltage signal, a pulsed voltage signal and / or a high-frequency test signal. nal into the monitoring circuit. The respective signal can then be evaluated continuously or periodically by the control device to detect a possible interruption in the monitoring circuit.
  • the monitoring current circuit comprises at least one further protective device.
  • the further protective device may be designed to interrupt an electrical connection in the monitoring circuit when a predetermined event occurs.
  • the further protective device can be designed to interrupt the monitoring circuit when an overpressure, an optical signal and / or an acoustic signal occur.
  • Error cases, in particular error cases in connection with a thermal event can possibly be detected by un ferent sensors.
  • a thermal event ausbil Dende pressure wave can be detected by a pressure sensor
  • a possible bang or a characteristic noise of an error occurring can be detected by a suitable acoustic sensor, or a training over blow or arc can by an optical Sensor he be known.
  • any other physical properties are detectable by suitable sensors. Is determined by a suitable after detecting a given physical event
  • Figure 1 shows a schematic representation of a schematic diagram of an electric drive system with a protective device according to an embodiment
  • Figure 2 shows a schematic representation of a principle circuit diagram of a protective device according to another embodiment
  • FIG. 3 shows a flowchart on which a method for securing a high-voltage network according to an embodiment is based.
  • FIG. 1 shows a schematic representation of an electrical drive system 1 with a protective device for protecting a high-voltage network according to one embodiment.
  • the electric drive system 1 can be powered, for example, by a high-voltage traction battery 20.
  • This high-voltage traction battery 20 can via a circuit breaker 21st be electrically coupled to the high-voltage electrical system of the vehicle.
  • the high-voltage traction battery 20 can feed a power converter 41, for example.
  • the power converter 41 can be, for example, an inverter which generates an alternating voltage for driving an electrical machine 42 from the DC voltage provided.
  • the power converter 41 for example, be controlled by a control circuit 43 on.
  • the individual compo nents of the high-voltage electrical system can be connected, for example by means of connectors 22 to the high-voltage electrical system.
  • a monitoring circuit 12 may be provided. If the contacts for the high-voltage electrical system and the monitoring circuit 12 are routed via a common plug-in connection, the monitoring circuit 12 is also opened upon release of this plug-in connection.
  • a control device 11 may be provided. In this case, the beginning and the end of the monitoring circuit 12 with the control device 11 may be electrically coupled.
  • the Steuereinrich device 11 may continuously or periodically feed electrical signals Sig in the monitoring circuit 12 and check the se way, whether the monitoring circuit 12 is closed ge or whether an interruption has occurred in the monitoring circuit 12. An interruption can be caused by removing a connector 22, for example, as previously described, for example. If an interruption in the monitoring circuit 12 is detected by the control device 11, the control device 11 can cause the switching device 21 to electrically disconnect the high-voltage traction battery 20 from the high-voltage vehicle electrical system.
  • contactors which in the Switching device 21 are arranged between the high-voltage traction battery 20 and the high-voltage electrical system, who opened the.
  • the controller 11 as long as a control signal to the switching device 21 provides, as long as the monitoring circuit 12 is closed, ie no interrup tion in the monitoring circuit 12 is detected.
  • the control device 11 does not provide a signal to the disconnecting device 21, whereupon the switching device 21 opens the electrical connection between the traction battery 20 and the high-voltage vehicle electrical system , In this way it can be ensured that even if the control device 11 fails, the switching elements in the switching device 21 are opened and the electrical connection between the traction battery 20 and the high-voltage vehicle electrical system is opened.
  • excessive heating of one or more components of the electric drive system 1 may occur due to overstress or malfunction.
  • a thermal event may be caused due to a defect in a device.
  • a semiconductor switching element such as an IGBT
  • the traction battery 20 can continue to supply electrical energy to the high-voltage vehicle electrical system. This may possibly lead to a further spread of the error and possibly to further thermal see events lead.
  • the high electrical voltage and the provided by the traction battery 20 large amount of electrical energy, a possible erase attempt or the like difficult to verhin changed. Also, the high electrical voltage is a major threat to potential rescue workers.
  • the illustrated number of three Tem peraturfelden in the monitoring circuit 12 is le diglich the better understanding and is no restriction of the present invention kung to a predetermined number of thermal fuses. Rather, any number of one, two or more thermal fuses 13-i in the Monitoring circuit 12 possible.
  • the tempera ture Anlagenen 13-i are arranged as a series circuit in the monitoring circuit 12.
  • the Temperaturêtun conditions 13-i may be provided at appropriate locations within the electric drive system 1, where a strong temperature development or a thermal event may be possible.
  • one or more temperature fuses 13-1 may be provided at or within the power converter 41.
  • a thermal fuse 13-1 may be centrally provided in the power converter 41.
  • a thermal fuse 13-1 may be used at one or more components within the Stromrich age 41, for example, to the semiconductor switching elements, egg nen DC link capacitor, or any other compo ments directly provide a thermal fuse 13-1.
  • one or more temperature-sensitive ments 13-2 provided on the electric machine 42 to possibly ne in case of excessive heating of the electrical Maschi 42 also allow a shutdown of the high-voltage electrical system.
  • a temperature fuse 13-3 may be provided on a Anticianschal device 43 for the power converter 41.
  • the temperature fuses 13-i can be any temperature fuses which open an electrical connection between two connection points when a limit temperature is exceeded. In this way, such a looped into the monitoring circuit 12 temperature fuse 13-i when exceeding the respective limit temperature, the monitoring circuit 12 between the two connection points of the thermal fuse 13-i interrupt. This Un interruption of the monitoring circuit 12 can be detected by the controller 11. Thereafter, the controller 11 may interrupt the electrical connection between the traction battery 20 and the high-voltage electrical system due to a detected interruption in the monitoring circuit 12. As a result of the traction battery 20 no further electrical energy is fed into the high-voltage electrical system.
  • the thermal fuses 13-i can be both a reversible and an irreversible temperature fuse. For reversible temperature fuses, the temperature fuse can be restored to restore the electrical connection between the two connection points of the temperature fuse. In this way, a further operation without additional repair measures is possible for example after cooling.
  • a reversible thermal fuse may comprise a bimetallic element, electrical resistance with a positive temperature coefficient (PTC), or the like.
  • PTC positive temperature coefficient
  • irreversible temperature fuses are possible, which cause an irreversible interruption between the two connection points of the Tempe raturtechnisch when a limit temperature is exceeded. In this way, it can be supplementge notes that even after a possible Abküh treatment of the temperature at the fault no renewed to turn the traction battery 20 is in the high-voltage electrical system before a repair of the fault and a replacement of the thermal fuse 13-i is.
  • such an irreversible temperature fuse can be realized with means of a fusible element or the like.
  • FIG. 2 shows a schematic representation of an electrical drive system rule 1 with a protective device for securing the high-voltage network according to a further embodiment form.
  • the same reference symbols designate identical or similar components.
  • the embodiment according to FIG. 2 differs from the previously described embodiment particularly in that the control device 11 in this case in the switching device 21 for disconnecting / coupling the traction battery 20 to the high-voltage Electrical system is integrated.
  • the embodiments already described in connection with FIG. 1 apply.
  • the Trakti onsbatterie 20 can be charged by means of a charging device 30.
  • the charging device 30 can be powered by an external DC or AC voltage source.
  • the charging device 30 may convert the externally provided voltage to a voltage suitable for charging the traction battery 20.
  • the high-voltage connection of the charging device 30 can be monitored by means of a monitoring circuit 12.
  • the components of the charging device 30 and the components of the inverter 41 can also be monitored by means of a common monitoring circuit 12.
  • Kings nen also separate monitoring circuits 12 may be provided for the Ladevor device 30 and inverter 41.
  • one or more thermal fuses 13-5 may be provided in the charging device 30 or at the individual components of the charging device 30. In this way, if necessary, excessive heating and / or thermal events in the charging device 30 can be detected and then a disconnection of the high-voltage traction battery 20 can take place.
  • the controller 11 can feed any DC or AC signal into the monitoring circuit 12 a.
  • a constant voltage or a constant electrical current can be fed into the monitoring circuit 12 to detect a possible interruption in the monitoring circuit 12.
  • pulsed signals or possibly also high-frequency signals for monitoring the monitoring circuit 12 circuit possible.
  • passive components as a thermal fuse 13-i, it is possible that the thermal fuses 13-i do not influence the electrical properties of the monitoring circuit 12 or only to a very limited extent.
  • the electrical signals of the control device 11 ments are almost not affected by the temperature hedges, so that the result of the control device 11 for detecting an interruption in the monitoring circuit 12 is not falsified by the temperature fuses 13-i.
  • temperature fuses 13-i may also be provided, if necessary, further monitoring elements that cause an electrical interruption in the monitoring circuit 12 when ei nes predetermined event occurs.
  • further monitoring elements that cause an electrical interruption in the monitoring circuit 12 when ei nes predetermined event occurs.
  • a pressure sensor which, when a thermal event occurs, results in a resulting pressure
  • FIG. 1 shows a schematic representation of a traineddia program, as it is based on a method for securing a high-voltage network in a vehicle.
  • a monitoring circuit is provided which has at least one temperature fuse.
  • the temperature fuse is designed to interrupt an electrical connection in the monitoring circuit when an overheating event occurs.
  • step S2 an interruption in the monitoring circuit is detected and in step S3, a power supply of the high-voltage network is interrupted chen when an interruption has been detected in the monitoring circuit.
  • the present invention relates to the assurance of a high-voltage network, which is fed by an electrical energy source, such as a traction battery of an electric vehicle.
  • an electrical energy source such as a traction battery of an electric vehicle.
  • it is provided to arrange in a monitoring circuit, such as a high-voltage interlock, one or more additional temperature hedges, which interrupt the monitoring circuit when a temperature is exceeded, thus initiating a Tren voltage between the high-voltage network and the feeding high-voltage battery.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Protection Of Static Devices (AREA)

Abstract

La présente invention concerne la protection d'un réseau haute tension, qui est alimenté par une source d'énergie électrique, telle que, par exemple, une batterie d'entraînement d'un véhicule électrique. Selon la présente invention, dans un circuit électrique de surveillance, tel que, par exemple, un système de verrouillage à haute tension, sont disposés un ou plusieurs protecteurs thermiques supplémentaires qui, en cas de dépassement d'une température, interrompent le circuit électrique de surveillance et déclenchent ainsi une coupure entre le réseau haute tension et la batterie d'alimentation à haute tension.
PCT/EP2018/083488 2017-12-05 2018-12-04 Dispositif de protection et procédé de protection d'un réseau haute tension ainsi que système d'entraînement électrique WO2019110588A1 (fr)

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DE102017221935.1A DE102017221935A1 (de) 2017-12-05 2017-12-05 Schutzvorrichtung und Verfahren zur Absicherung eines Hochvoltnetzes sowie elektrisches Antriebssystem
DE102017221935.1 2017-12-05

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DE102020121544A1 (de) * 2020-08-17 2022-02-17 Bayerische Motoren Werke Aktiengesellschaft Steckverbindungselement, sowie eine Vorrichtung zur Überwachung eines Steckverbindungselements
DE102022113963A1 (de) 2022-06-02 2023-12-07 Bayerische Motoren Werke Aktiengesellschaft Interlockschaltung für ein Hochvoltbordnetz mit Thermosicherung
DE102023107585A1 (de) 2023-03-27 2024-10-02 Phoenix Contact E-Mobility Gmbh System zur Temperaturüberwachung und Unterbrechung von Kommunikationsleitungen

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DE102013219141A1 (de) 2013-09-24 2015-03-26 Robert Bosch Gmbh Interlock-Schaltkreis zur Absicherung eines elektrischen Bordnetzes
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DE102010056006A1 (de) 2010-12-23 2012-06-28 Volkswagen Ag Verfahren zur Überwachung eines Leitungsnetzes für ein Fahrzeug sowie entsprechende Überwachungsvorrichtung und Fahrzeug
EP2830178A1 (fr) * 2013-07-22 2015-01-28 ebm-papst Mulfingen GmbH & Co. KG Circuit de protection thermique et de régulation de puissance de moteurs électriques
DE102013219141A1 (de) 2013-09-24 2015-03-26 Robert Bosch Gmbh Interlock-Schaltkreis zur Absicherung eines elektrischen Bordnetzes
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DE102014219235A1 (de) * 2014-09-24 2016-03-24 Conti Temic Microelectronic Gmbh Schaltungsvorrichtung und Verfahren zum Ermitteln eines Zustandes einer Verriegelungsleiterschleife
DE102015107053A1 (de) 2015-05-06 2016-11-10 Phoenix Contact E-Mobility Gmbh Steckverbinderteil mit einer temperaturabhängigen Schalteinrichtung

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Publication number Priority date Publication date Assignee Title
CN113954644A (zh) * 2020-07-01 2022-01-21 沃尔沃卡车集团 使用低压开关的车辆电气系统的断开

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