WO2022155693A1 - Dispositif de séparation sécurisée d'un accumulateur de courant haute tension - Google Patents

Dispositif de séparation sécurisée d'un accumulateur de courant haute tension Download PDF

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Publication number
WO2022155693A1
WO2022155693A1 PCT/AT2022/060014 AT2022060014W WO2022155693A1 WO 2022155693 A1 WO2022155693 A1 WO 2022155693A1 AT 2022060014 W AT2022060014 W AT 2022060014W WO 2022155693 A1 WO2022155693 A1 WO 2022155693A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
power storage
voltage power
storage device
resistor
Prior art date
Application number
PCT/AT2022/060014
Other languages
German (de)
English (en)
Inventor
Patrick LÖFFLER
Gerhard STEMPFER
Paul BATTHYÁNY
Josef Praschk
Original Assignee
Miba Emobility 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 Miba Emobility Gmbh filed Critical Miba Emobility Gmbh
Priority to DE112022000684.6T priority Critical patent/DE112022000684A5/de
Publication of WO2022155693A1 publication Critical patent/WO2022155693A1/fr

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Classifications

    • 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
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • 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
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006—Opening by severing a conductor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/22—Selection of fluids for arc-extinguishing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/68—Liquid-break switches, e.g. oil-break
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/004—Closing switches
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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

Definitions

  • the invention relates to a device for safely disconnecting a high-voltage battery in a vehicle, with a pyrotechnic disconnecting device, an at least partially capacitive and/or inductive intermediate circuit and a motor/generator, the pyrotechnic disconnecting device being arranged between the high-voltage battery and the intermediate circuit and being used for quickly disconnecting the High-voltage power storage is set up by the intermediate circuit and also a discharge resistor is provided.
  • Safety devices for separating high-voltage current storage devices in vehicles are often known from the prior art, in order to prevent injury to those involved in the accident or to the people involved in the clean-up work, particularly in the event of an accident with deformation of the body of the vehicle.
  • an electric shock or a fire can break out as a result of an unwanted short circuit or uncontrolled contact between the vehicle parts and live parts of the vehicle drive.
  • suitable disconnecting devices are used in order - in the event of an accident - to disconnect the high-voltage power storage unit from the vehicle's live installations as quickly as possible.
  • separating devices often work with pyrotechnic material and are designed as so-called pyrotechnic separators, with an explosive charge and a corresponding working medium being used to build up pressure and thus a separating mechanism is set in motion, which leads to the separation of one or more electrical lines.
  • a pyrotechnic switch is disclosed, a predetermined separation point of an electrical conductor being separated.
  • a safety method for a hybrid or electric vehicle is known from the publication WO2018/091308A1, it being taught that in addition to a physical separation of an accumulator from an HV intermediate circuit, this HV intermediate circuit is discharged. Further switches are known from the publications US2010328014A1, DE 102020104617 A1, US2020211801A1 and DE102019200861A1.
  • high-voltage networks and corresponding high-voltage components are arranged in vehicles. This is used, for example, to operate converters, cooling units and/or heaters. In the event of an accident, damage to these high-voltage networks can also pose a risk. For example, in the event of an accident, insufficient shielding could damage a low-voltage component or even injure people.
  • Energy is also stored in such high-voltage networks, since differently arranged components represent, for example, capacitive and/or inductive loads.
  • the inventive object is achieved by a device according to claim 1.
  • a device for safely disconnecting a high-voltage battery in a vehicle with a pyrotechnic disconnecting device, an at least partially capacitive and/or inductive intermediate circuit and a motor/generator, the pyrotechnic disconnecting device being arranged between the high-voltage battery and the intermediate circuit and is set up for quickly separating the high-voltage power storage device from the intermediate circuit, and a discharge resistor is also provided, the discharge resistor being set up for discharging the intermediate circuit, characterized in that the discharge resistor is an NTC resistor. Temperature-dependent resistors with a negative temperature coefficient are referred to as NTC resistors or NTC thermistors.
  • NTC resistors conduct electricity better at higher temperatures than at low temperatures. In the event of a load when a voltage is applied, the cold NTC resistor conducts only little current due to its high resistance. As operation continues, the NTC resistor heats up, reducing its electrical resistance and increasing the current flow.
  • NTC resistors are usually made of metal oxides such as iron oxide (Fe2O3), ZnTiO4 and magnesium dichromate (MgCr2O4). NTC resistors are usually characterized by their resistance at 25°C (R25).
  • a temperature-dependent resistor is particularly advantageous because the discharge contact can be closed very early. A discharge is thus already possible during the occurrence of an arc when the primary contact is opened by the pyrotechnic charge. While the arc that occurs at or in the area of the separation point of the primary contact is being extinguished, the discharge contact can already be contacted.
  • This chronological sequence thus leads to energy inputs, in particular partial energy inputs from the battery and/or the intermediate circuit and/or other energies stored in the vehicle, for example inductances, in the discharge circuit at a particularly early point in time after the release function has been triggered, and at least partially dissipated via the discharge resistor to become.
  • the contact for contacting the discharge circuit or the discharge resistor is protected during the switching process and/or the current load on the resistor is reduced.
  • intermediate circuit voltages of up to 1000V can be processed by the discharge resistor. Since the operating voltages of the energy stores are expected to increase further in the course of further technical developments, particularly in electric vehicles, the subject matter of the invention is of great technical and economic importance.
  • the lower peak power loading of the discharge circuit results in lower necessary heat capacities and more time for heat dissipation, whereby a smaller installation space of the discharge circuit and/or smaller line cross sections are made possible.
  • the discharge of the intermediate circuit via the discharge resistor according to the invention and the loading of the other energy sources result in an increase in temperature of the discharge resistor and thus a reduction in resistance. According to a particular embodiment, this leads to faster discharging of the intermediate circuit and thus to a reduction in the discharging times of the intermediate circuit.
  • the discharge resistor at a nominal temperature of 25° C.—has a nominal resistance less than IkQ.
  • the discharge resistor has a nominal resistance ⁇ Ikfi at ambient temperature.
  • the discharge resistor has a resistance of ⁇ 10 ⁇ at 200°C.
  • the resistor withstands voltage loads of up to 1000V.
  • the discharge resistor is at least partially embedded in a cooling gas or a cooling liquid for cooling. This can ensure improved heat dissipation and thus better cooling of the discharge resistor.
  • the NTC resistor has a series resistor, in particular a fixed resistor, for example an ohmic resistor, in series upstream.
  • a series resistor in particular a fixed resistor, for example an ohmic resistor, in series upstream.
  • various types of linear/ohmic or non-linear series resistors are possible as series resistors.
  • the invention is characterized by a device for safely disconnecting a high-voltage battery, the pyrotechnic disconnecting device being designed to disconnect a primary connection of a first conductor from a second conductor, the first conductor being provided for connection to the high-voltage battery and the second Conductor is provided for connection to at least one consumer connected downstream of the pyrotechnic separating device, and a third conductor is provided, the pyrotechnic separating device being designed such that after the first conductor has been separated from the second conductor, the second conductor is used to produce a secondary connection with can be connected to a third conductor, the third conductor being suitable for connection to the discharge resistor.
  • the third conductor is provided as a series resistor with a predetermined electrical resistance value in front of the discharge resistor. According to a special one, the third conductor at least partially forms the series resistor.
  • a cooling device for example a heat sink
  • the third conductor is at least partially embedded in a cooling gas and/or a cooling liquid in the cooling device.
  • the third conductor and the discharge resistor are jointly embedded in a cooling gas and/or a cooling liquid. This is particularly advantageous when the third conductor is designed as a series resistor.
  • the third conductor and/or the series resistor and/or the discharge resistor are each at least partially embedded in a cooling gas and/or a cooling liquid.
  • the pyrotechnical isolating device is set up to separate a connection of a first conductor from a second conductor, the first conductor being suitable for connection to the high-voltage power storage device and the second conductor being suitable for connection to at least one consumer connected downstream of the pyrotechnical isolating device and the pyrotechnic separating device is designed to separate the first from the second conductor, which is offset in time, connecting the second conductor to a third conductor, the third conductor being suitable for connection to the discharge resistor.
  • contact can be made with the discharge resistor while the arc of the separating device is still active.
  • this is characterized by a method for using a device according to the invention, in which, after the primary connection has been disconnected, the secondary connection is interrupted in a time interval of at most 3 ms, preferably at most 1.5 ms, particularly preferably at most 0. 5 ms is established.
  • the invention is characterized by a method for safely disconnecting a high-voltage power storage device, in particular in a vehicle, with a pyrotechnical disconnecting device, a capacitive and/or inductive intermediate circuit and a motor/generator being provided, with the pyrotechnical disconnecting device between the high-voltage power storage device and is arranged in the intermediate circuit and is set up for quickly separating the high-voltage power storage device from the intermediate circuit, and a discharge resistor is also provided, the discharge resistor being set up for discharging the intermediate circuit, characterized in that the discharge resistor is an NTC resistor and the pyrotechnical separating device is set up for separating a primary connection of a first conductor from a second conductor, the first conductor being provided for connection to the high-voltage power storage device and the second conductor for connection to m at least one load downstream of the pyrotechnic disconnection device is provided, and a third conductor is provided, the pyrotechnic
  • the invention is characterized by a method for safely disconnecting a high-voltage power storage device, in which, after the primary connection has been mechanically disconnected, the secondary connection is disconnected within a time interval of no more than 3 ms, preferably no more than 1.5 ms, particularly preferably no more than 0. 5 ms is established.
  • FIG. 1 shows part of a schematic circuit diagram for a device for safely disconnecting a high-voltage power storage device
  • FIG. 2 shows a schematic representation of a pyrotechnic disconnection device for use in a device for the safe disconnection of a high-voltage power storage device
  • FIG. 3 shows a schematic representation of a pyrotechnic separating device after triggering the separating function
  • FIG. 4 shows a schematic representation of a schematic circuit diagram for a device for the safe disconnection of a high-voltage power storage device
  • Fig. 1 part of a circuit diagram of a device for safe disconnection of a high-voltage power storage is shown schematically.
  • This high-voltage power storage device 11 is connected via a pyrotechnic disconnecting device 12 to a high-voltage network, which is shown in simplified form by a capacitor 13 in the schematic representation.
  • This high-voltage network can be designed as part of an inverter circuit, for example.
  • a motor/generator is also not shown Can be part of the high-voltage network.
  • a discharge resistor 16 can be switched via a suitable switching mechanism 14, which in turn can be controlled, for example, via a suitable trigger mechanism 15. According to a special embodiment of the present invention, the discharge resistor 16 is switched into a discharge circuit with the capacity 13 by the switching mechanism 14 during or after the separation of the high-voltage storage device 11 from the capacity 13 by the pyrotechnic separation device 12 . As a result, the energy stored in the capacitor 13 can be dissipated via the discharge resistor 16 .
  • the discharge resistor 16 is designed as an NTC resistor.
  • a pyrotechnic separating device 12 shows a possible embodiment of a pyrotechnic separating device 12 as a fuse 1 for separating two electrical conductors.
  • a first conductor 2 is provided which is connected to a second conductor 5 in the configuration shown in FIG.
  • the two conductors are connected via the piston 3 and the conductor section 4 of the second conductor and a connecting region 6 of the first conductor.
  • a squib 9 is arranged inside the first conductor and can be actively controlled and ignited via 2 contacts 10 .
  • the connecting area 6, which is designed as a hollow cylinder with a thin cross section, is separated by the detonation of the squib.
  • the plunger 3 is moved in the direction of the second conductor 5 as a result of this separation and the pressure created by the squib and the arc.
  • the conductor section 4 which is also designed as a hollow cylinder with a thin cross section, is thereby deformed, in particular folded. This deformation and/or folding takes place in the folding space 7 of the fuse.
  • the separation of the first conductor 2 from the second conductor 5 creates an arc in the separation area of the connection area 6 .
  • An arc extinguishing medium 8, in particular silicone oil, is arranged in this area for the purpose of extinguishing the arc.
  • the arc extinguishing medium 8 evaporates, as a result of which the internal pressure in this area increases and this pressure acts on the piston 3 and a sabot 18 .
  • the fuse also has a third contact 17, which is contacted via the sabot 3 when the fuse is triggered.
  • the fuse not only forms the pyrotechnic disconnection device 12, but also forms the function of the switch 14 and its control 15. If the fuse 1 trips, the high-voltage power storage device is first disconnected, ie the first conductor 2 is disconnected from the second conductor 5 . Due to the high currents and inductances that occur in electric vehicles, there is an arc that takes time to extinguish. If the contacting is already carried out during this erasing process, the result is a high load on the discharge resistor with a possible shortening of the total discharge time.
  • the discharge circuit as shown in FIG. 1, can thus be closed.
  • the time-staggered contacting takes place according to the following procedure: First, the squib 9 separates the connection area 6 of the first conductor. Due to the resulting pressure, the piston 3 is displaced in the direction of the discharge contact 17. The separation of the connection area 6 and thus the connection of the first conductor 2 to the second conductor 5 forms an arc. The displacement of the piston 3 towards the discharge contact 17 leads to the closing of the discharge contact 17.
  • the high-impedance cold discharge resistor which is contacted via the discharge contact 17, is therefore briefly subjected to a high voltage. Due to its high resistance, the discharge resistor and the discharge contact are protected from burning. As can be seen in FIG.
  • the conductor section 4 deforms and folds as a result of the movement of the piston 3.
  • the energy of the separating function is dissipated, for example due to the evaporation of the arc extinguishing medium 8, until the arc is extinguished. Additional gas and excess pressure are produced as a result of the evaporation of the arc-extinguishing medium 8, in particular the silicone oil.
  • This overpressure acts on the piston 3 and the sabot 18 and leads to a promotion of the movement of the piston 3 in the direction of the discharge contact 17.
  • a series resistor 19 is schematically provided compared to Fig.l.
  • a fixed resistor can be used here, for example.
  • the third contact or discharge contact 17 can also be provided as a series resistor 19 .
  • a cooling device 20 is provided schematically in FIG. 4 .
  • This cooling device has a cooling gas and/or a cooling liquid, by means of which the third conductor or discharge contact 17 and/or the series resistor 19 and/or the discharge resistor 16 can be cooled.
  • the third conductor or discharge contact 17 and/or the series resistor 19 and/or the discharge resistor 16 is embedded in the cooling gas and/or the cooling liquid.
  • the cooling device 20 has a cooling housing in which, for example, the cooling gas and/or the cooling liquid is/are provided.

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  • Engineering & Computer Science (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)

Abstract

L'invention concerne un dispositif de séparation sécurisée d'un accumulateur de courant haute tension (11) dans un véhicule, comprenant un dispositif de séparation pyrotechnique (12), un circuit intermédiaire (13) au moins partiellement capacitif et/ou inductif et un moteur/générateur, le dispositif de séparation pyrotechnique (12) étant disposé entre l'accumulateur de courant haute tension (11) et le circuit intermédiaire (13) et étant conçu pour réaliser une séparation rapide entre l'accumulateur de courant haute tension (11) et le circuit intermédiaire (13) et présentant en outre une résistance de décharge (16), la résistance de décharge (16) étant conçue pour décharger le circuit intermédiaire (13). Selon l'invention, la résistance de décharge (16) est une résistance NTC.
PCT/AT2022/060014 2021-01-20 2022-01-19 Dispositif de séparation sécurisée d'un accumulateur de courant haute tension WO2022155693A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112022000684.6T DE112022000684A5 (de) 2021-01-20 2022-01-19 Vorrichtung zum sicheren trennen eines hochvoltstromspeichers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50026/2021A AT524425B1 (de) 2021-01-20 2021-01-20 Vorrichtung zum sicheren Trennen eines Hochvoltstromspeichers
ATA50026/2021 2021-01-20

Publications (1)

Publication Number Publication Date
WO2022155693A1 true WO2022155693A1 (fr) 2022-07-28

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PCT/AT2022/060014 WO2022155693A1 (fr) 2021-01-20 2022-01-19 Dispositif de séparation sécurisée d'un accumulateur de courant haute tension

Country Status (3)

Country Link
AT (1) AT524425B1 (fr)
DE (1) DE112022000684A5 (fr)
WO (1) WO2022155693A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100328014A1 (en) 2009-06-29 2010-12-30 Toyoda Gosei Co., Ltd. Electric circuit breaker apparatus for vehicle
US20110273809A1 (en) * 2008-12-24 2011-11-10 Innofont Gmbh & Co Kg Method and Device for Protecting a Lithium Ion Battery in a Vehicle
DE102012215074A1 (de) * 2012-08-24 2014-02-27 Robert Bosch Gmbh Batterie mit Sicherungseinrichtung sowie Verfahren zum sicheren Betreiben einer Batterie
DE102014202635A1 (de) * 2014-02-13 2015-08-13 Robert Bosch Gmbh Batteriezelle mit Stromunterbrechung bei Entgasung
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DE102019200861A1 (de) 2019-01-24 2020-07-30 Audi Ag Entladeschaltung für einen Zwischenkreis
DE102020104617A1 (de) 2020-02-21 2020-05-14 Peter Lell Schnelltrennschalter für elektrische Ströme bei hohen Spannungen mit bewegbarem oder verformbarem Trennelement zur Trennung eines Trennbereichs

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