WO2013087305A1 - Unité de séparation pyrotechnique pour interrompre une voie de haute tension dans un véhicule à moteur - Google Patents

Unité de séparation pyrotechnique pour interrompre une voie de haute tension dans un véhicule à moteur Download PDF

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Publication number
WO2013087305A1
WO2013087305A1 PCT/EP2012/072131 EP2012072131W WO2013087305A1 WO 2013087305 A1 WO2013087305 A1 WO 2013087305A1 EP 2012072131 W EP2012072131 W EP 2012072131W WO 2013087305 A1 WO2013087305 A1 WO 2013087305A1
Authority
WO
WIPO (PCT)
Prior art keywords
pyrotechnic
separation unit
motor vehicle
voltage path
propellant charge
Prior art date
Application number
PCT/EP2012/072131
Other languages
German (de)
English (en)
Inventor
Markus Kohlberger
Johannes BIEDERT
Original Assignee
Robert Bosch Gmbh
Samsung Sdi Co., Ltd.
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, Samsung Sdi Co., Ltd. filed Critical Robert Bosch Gmbh
Priority to CN201280061172.9A priority Critical patent/CN103999181B/zh
Publication of WO2013087305A1 publication Critical patent/WO2013087305A1/fr

Links

Classifications

    • 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
    • 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
    • B60L3/0046—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
    • 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

Definitions

  • Pyrotechnic separation unit for interrupting a high-voltage path in a motor vehicle
  • the present invention relates to a pyrotechnic separation unit for
  • Energy storage - in particular consisting of lithium-ion cells - with a drive system of a motor vehicle, in particular an electric motor vehicle or a hybrid vehicle connects.
  • Energy storage which contains in particular lithium-ion cells, and a drive system must be switched off immediately after an accident, otherwise only under difficult and life-threatening conditions rescue / salvage can take place.
  • a Pyrosch with foreign and self-triggering is known.
  • the device has a fuse function in the event that the monitored conductor is disconnected not due to an accident but, for example, due to a short circuit within a wiring harness. Furthermore, the separation process is controlled by the choice of pyrotechnic mixture.
  • DE 44 13 847 B4 describes a safety device for motor vehicles for the accidental separation of an electrical energy source from a vehicle electrical system.
  • the safety device comprises a shutdown device which can be activated by an accident sensor and which does not cause a voltage drop during normal operation of the motor vehicle. Only in case of accidental activation of the shutdown device is a separation of the electrical energy source from the electrical system.
  • the switching-off device has a separating means that can be acted upon by driving energy, by means of which a current conductor belonging to the electrical system can be separated in a manner interrupting the flow of current.
  • the invention is based on a pyrotechnic separation unit for
  • Separating unit is attached to a conductor portion of the high-voltage path as an encapsulated housing containing a pyrotechnic propellant charge, wherein the housing has a cavity which is divided by a conductor portion fixedly mounted impact body in a pyrotechnic propellant charge containing explosive space and an expansion space, wherein the
  • Expansion space is designed to accommodate at least parts of the impact body after ignition.
  • a thus created compact design of a housing with a cavity having two mutually operatively connected subspaces makes it possible to make a safe separation of a conductor from the high voltage network in a motor vehicle in a confined space, so that no damage from a damaged battery or destroyed cables Fire hazards and / or short circuits can be triggered.
  • the explosion room and expansion room sections are designed so that they can withstand the explosion pressure and therefore no further impairments in the external environment of the separation unit are permitted.
  • the destructive force of a triggered ignition of the pyrotechnic propellant unfolds purposefully on the conductor section which is located in the explosion chamber and on the impact body attached to the conductor section.
  • the pyrotechnic propellant charge is arranged in a cylindrical shape around the high-voltage path.
  • the encapsulated housing of the separation unit is preferably surrounded by an electrically insulating material.
  • the separation unit can also be designed so that it has an externally controllable ignition unit. This makes it possible to trigger the separation unit via a signal present in the motor vehicle
  • the impact body which separates the explosion chamber from the expansion space, rests against a shoulder between the explosion and expansion space. This plant seals the
  • Explosion space up to a possible ignition of the pyrotechnic propellant from the expansion space which can develop a metered in the case of ignition strong explosive force of the pyrotechnic propellant charge, which is sufficient, comprising the pyrotechnic propellant charged conductor portion of the
  • the explosion space and the expansion space can be rotationally symmetrical in a favorable manner for the production of the housing of the separation unit, wherein they are present in a mutually different volume in the ratio of at least 1 to 2. This succeeds, the
  • the separation unit can due to their small dimensions directly into a safety high-voltage connector for cutting through a pole of a
  • Conductor section or be installed at another location of a wiring harness with a high-voltage path for the transection of a conductor section. These options depend not least on the design space limiting design conditions.
  • Motor vehicle which has an impact detection and the separation unit has a triggerable via a signal of the sensor for impact detection ignition unit.
  • Such a constructive connection increases the safety-relevant requirement for motor vehicles which have a drive system which is electrically operated via a high-voltage path.
  • the invention further provides a motor vehicle, in particular electric motor vehicle or hybrid vehicle, with a pyrotechnic separation unit for interrupting a high-voltage path in the voltage field of one of a plurality, in particular lithium-ion cells existing energy storage available.
  • a motor vehicle in particular electric motor vehicle or hybrid vehicle
  • a pyrotechnic separation unit for interrupting a high-voltage path in the voltage field of one of a plurality, in particular lithium-ion cells existing energy storage available.
  • FIG. 1 shows a separation unit integrated in a safety high-voltage plug.
  • FIG. 1 shows how a separation unit 12 is integrated in a safety high-voltage plug 10. Behind a pole 28 is on a subsequent
  • Conductor portion 24 a housing with the separation unit 12.
  • the separation unit 12 has a cavity with two different sized subspaces, a smaller explosion chamber 32 and a larger expansion chamber 18, both of which are present rotationally symmetrical.
  • a pyrotechnic propellant charge 22 is placed around a conductor portion 24 in a cylindrical shape, from both sides by in
  • Circular ring shaped impact body 20, 26 is limited, wherein the baffle 20 is designed in the direction of the expansion space 18 absprengbar.
  • the impact body 20 seals, lying by its larger diameter on a shoulder 34 between the explosion chamber 32 and the expansion space 18, in such a way that the explosion energy initially builds up to interrupt the conductor portion 24 and almost simultaneously the baffle body 20 and parts of the conductor portion 24 are trappable in the expansion space 18.
  • the separation unit 12 consists in particular of a metallic material, wherein an electrical insulation 14 is applied from the outside to the housing of the separation unit 12.
  • the pyrotechnic propellant charge 22 can be ignited almost simultaneously with existing in a motor vehicle airbags by an electrical impulse via a standing in operative connection with the ignition unit.
  • the ignition can be done in less than 20 ms.
  • the separation unit 12 is not based on its positioning in one
  • Safety high-voltage connector 10 limited, but it can also be mounted elsewhere in a high-voltage path in an electric motor vehicle or hybrid vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

Unité de séparation pyrotechnique (12) pour interrompre une voie de haute tension dans un véhicule à moteur. Ladite unité pyrotechnique (12) est logée en un endroit défini de la voie de haute tension, dans un boîtier encapsulé qui comporte un espace creux divisé par un corps d'impact (20) monté à demeure sur un segment conducteur (24) en une chambre d'explosion (32) contenant la charge explosive pyrotechnique (22) et en une chambre d'expansion (18), la chambre d'expansion (18) étant conçue pour accueillir au moins des parties du corps d'impact (20) après l'allumage de la charge explosive pyrotechnique (22).
PCT/EP2012/072131 2011-12-13 2012-11-08 Unité de séparation pyrotechnique pour interrompre une voie de haute tension dans un véhicule à moteur WO2013087305A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280061172.9A CN103999181B (zh) 2011-12-13 2012-11-08 用于断开机动车辆中的高电压路径的烟火分隔单元

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011088347A DE102011088347A1 (de) 2011-12-13 2011-12-13 Pyrotechnische Trenneinheit zur Unterbrechung eines Hochvoltpfades in einem Kraftfahrzeug
DE102011088347.9 2011-12-13

Publications (1)

Publication Number Publication Date
WO2013087305A1 true WO2013087305A1 (fr) 2013-06-20

Family

ID=47178003

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/072131 WO2013087305A1 (fr) 2011-12-13 2012-11-08 Unité de séparation pyrotechnique pour interrompre une voie de haute tension dans un véhicule à moteur

Country Status (3)

Country Link
CN (1) CN103999181B (fr)
DE (1) DE102011088347A1 (fr)
WO (1) WO2013087305A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014011767B3 (de) * 2014-08-06 2016-02-04 Kurt-Helmut Hackbarth Gekapselte pyrotechnische Trennvorrichtung
CN104505313B (zh) * 2014-12-02 2017-03-29 国家电网公司 设有弹片的高压电力设备保险装置
DE102021005104A1 (de) 2021-10-12 2021-11-25 Daimler Ag Sicherheitssystem für ein zumindest teilweise elektrisch betriebenes Kraftfahrzeug, sowie Verfahren zum Betreiben eines Sicherheitssystems

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563947A1 (fr) * 1992-04-03 1993-10-06 Dynamit Nobel Aktiengesellschaft Méthode de protection de circuits, en particulier de circuits à courants forts, contre les surintensité et élément de protection électrique, en particulier pour courants forts
DE19819662A1 (de) * 1997-05-02 1998-11-12 Ellenberger & Poensgen Elektrischer Schalter zum Unterbrechen der Stromversorgung eines Kraftfahrzeuges
DE19817133A1 (de) * 1998-04-19 1999-10-28 Lell Peter Powerswitch
DE19902073A1 (de) * 1999-01-20 2000-08-10 Bosch Gmbh Robert Elektrischer Leiter mit Zündeinrichtung
DE10209625A1 (de) * 2002-03-05 2003-10-02 Mbb Airbag Systems Gmbh Pyrotechnisches Trennelement
DE10139360C2 (de) 2001-08-19 2003-11-13 Peter Lell Pyrosicherung ohne Wirkung nach außen bei Fremd- und Eigenauslösung
DE4413847B4 (de) 1993-05-03 2004-09-09 Volkswagen Ag Einrichtung für Kraftfahrzeuge zur unfallbedingten Trennung einer elektrischen Energiequelle von einem Bordnetz
FR2953324A1 (fr) * 2009-11-27 2011-06-03 Snpe Materiaux Energetiques Interrupteur electrique a tiroir coulissant formant coupe-circuit ou commutateur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958446A (fr) * 1950-03-10
JP2000123696A (ja) * 1998-10-15 2000-04-28 Nichiyu Giken Kogyo Co Ltd 車載用電源回路分離装置
JP5359982B2 (ja) * 2009-06-29 2013-12-04 豊田合成株式会社 車両の電気回路遮断装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563947A1 (fr) * 1992-04-03 1993-10-06 Dynamit Nobel Aktiengesellschaft Méthode de protection de circuits, en particulier de circuits à courants forts, contre les surintensité et élément de protection électrique, en particulier pour courants forts
DE4413847B4 (de) 1993-05-03 2004-09-09 Volkswagen Ag Einrichtung für Kraftfahrzeuge zur unfallbedingten Trennung einer elektrischen Energiequelle von einem Bordnetz
DE19819662A1 (de) * 1997-05-02 1998-11-12 Ellenberger & Poensgen Elektrischer Schalter zum Unterbrechen der Stromversorgung eines Kraftfahrzeuges
DE19817133A1 (de) * 1998-04-19 1999-10-28 Lell Peter Powerswitch
DE19902073A1 (de) * 1999-01-20 2000-08-10 Bosch Gmbh Robert Elektrischer Leiter mit Zündeinrichtung
DE10139360C2 (de) 2001-08-19 2003-11-13 Peter Lell Pyrosicherung ohne Wirkung nach außen bei Fremd- und Eigenauslösung
DE10209625A1 (de) * 2002-03-05 2003-10-02 Mbb Airbag Systems Gmbh Pyrotechnisches Trennelement
FR2953324A1 (fr) * 2009-11-27 2011-06-03 Snpe Materiaux Energetiques Interrupteur electrique a tiroir coulissant formant coupe-circuit ou commutateur

Also Published As

Publication number Publication date
CN103999181A (zh) 2014-08-20
CN103999181B (zh) 2016-12-07
DE102011088347A1 (de) 2013-06-13

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