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WO1999002937A1 - Systeme d'allumage - Google Patents

Systeme d'allumage Download PDF

Info

Publication number
WO1999002937A1
WO1999002937A1 PCT/DE1998/001779 DE9801779W WO9902937A1 WO 1999002937 A1 WO1999002937 A1 WO 1999002937A1 DE 9801779 W DE9801779 W DE 9801779W WO 9902937 A1 WO9902937 A1 WO 9902937A1
Authority
WO
WIPO (PCT)
Prior art keywords
semiconductor
semiconductor chip
igniter
igniter according
ignition
Prior art date
Application number
PCT/DE1998/001779
Other languages
German (de)
English (en)
Inventor
Marten Swart
Josef Dirmeyer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DE59805824T priority Critical patent/DE59805824D1/de
Priority to EP98941246A priority patent/EP0993589B1/fr
Priority to JP50797599A priority patent/JP3648256B2/ja
Publication of WO1999002937A1 publication Critical patent/WO1999002937A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/13—Bridge initiators with semiconductive bridge

Definitions

  • the invention relates to an igniter according to the preamble of patent claim 1.
  • a known igniter (WO 96/12926-A) contains a metal carrier over which a cap is placed. The cap and carrier together form a capsule which is filled with ignition material. A first connector pin is attached to the metal carrier, another connector pin is guided through the carrier in an electrically insulated manner and protrudes into the interior of the capsule. A semiconductor ignition element is arranged on the side of the carrier facing the ignition material and is connected in an electrically conductive manner to the further connection pin by means of a bonding wire.
  • An occupant protection system for a motor vehicle is known from EP 0 471 871 A1, in which a control device arranged centrally in the vehicle is connected to various protective means of the motor vehicle via a data line.
  • an electrical circuit is assigned to each protective device, which in particular receives and decodes ignition commands sent by the central control device.
  • an energy storage capacitor is arranged with each occupant protection means, so that, as a result of control signals from the control device, the electrical circuit causes the energy stored in the capacitor to be transferred to an ignition element of the occupant protection means and thus initiate triggering of the occupant protection means.
  • the object of the invention is a space-saving arrangement of an electrical associated with an occupant protection means To create circuit that is connected to the central control unit via a data line.
  • the electrical circuit and the energy storage capacitor are introduced / integrated in a lighter known for example from WO 96/12926-A.
  • the electrical circuit is designed as an integrated circuit arrangement on a semiconductor substrate and, due to the integration, allows dimensions that can be clamped.
  • the capacitor provided for providing energy for a starting process is also designed as an integrated component, which takes the form of a further semiconductor wafer.
  • the first semiconductor wafer containing the capacitor is arranged with its broad side opposite the broad side of the second semiconductor wafer containing the integrated circuit arrangement, so that the semiconductor wafer is stacked on top of one another as a so-called “package” and thus takes up the smallest possible space.
  • This package will be used again preferably arranged on a metal carrier of the igniter, which at least forms a capsule together with a cap, which is filled in the following ignition material:
  • the two broad sides of a semiconductor plate each have a much larger area in a cuboid plate than one of the four end faces .
  • Such an igniter intended for triggering an occupant protection means is usually plugged into the housing of a gas generator or otherwise mechanically connected to it.
  • the gas generator in turn has predetermined breaking points or openings directed towards a folded airbag.
  • breaking points or openings directed towards a folded airbag.
  • the entire electronics, including the capacitor is integrated into a conventional igniter without the size and size having to be changed
  • the use of conventional gas generators in conjunction with the igniter according to the invention can be used, so that, on the one hand, a structurally complex change to the gas generators is not necessary st, on the other hand, essential components of the lighter compared to conventional lighters m their design need not be changed.
  • Metal supports, such as a cap, for example, can have a construction which is identical to that of the known igniter.
  • the igniter according to the invention requires only a minimum of components and is easy to manufacture.
  • FIG. 1 shows an electrical circuit diagram of the igniter
  • FIG. 2 shows the igniter according to the invention in an exploded view from a view from above
  • FIG. 3 shows an igniter according to the invention in an exploded view from a view from below.
  • FIG. 1 shows the electrical circuit diagram of the igniter according to the invention.
  • the connections 6 are provided on the underside, each of which a decoupling resistor 61, and a board filter ensator d 62 with an integrated circuit device 21 are connected.
  • an ignition element 31 in the form of a heating resistor and an energy storage capacitor 11 are connected to the integrated circuit arrangement 21.
  • the function of the individual components is explained in more detail below: Since at least two of the connections 6 are connected to a data bus on the wiring harness side, a short circuit, for example of the integrated circuit arrangement 21, paralyzed the entire bus system. To protect the bus from such a short circuit, the high-resistance decoupling resistors 61 m are provided for each connection path.
  • the filter capacitor 62 is used to filter out high-frequency electromagnetic interference radiation.
  • the capacitor 11 serves to provide a sufficient amount of energy to ignite or trigger the associated occupant protection means.
  • the ignition element 31 is designed as a resistance heating wire, which is connected to a ignition material, e.g. Zundpulver, the lighter is hot-coupled.
  • the integrated circuit arrangement 21 receives incoming messages from a central control device of the occupant protection system via the connections 6. These messages can contain trigger information but also diagnostic information.
  • the integrated circuit arrangement has an interface suitable for connection to the data bus and a control unit in the form of a microprocessor for evaluating the received data, for sending the message to be sent, and for carrying out control and test routines. If the integrated circuit arrangement detects a transmitted ignition command, it switches an integrated electrically controllable one
  • FIG. 1 shows an exploded view of the inventive A nz ü nders from a top view.
  • the erfmdungsgewille igniter contains three terminal pins 6 which unststoffhalter by a K 7 provided with glass insulation 51 Off- voltages of a Metalltragers 5 are guided.
  • the metal carrier 5 serves as a carrier element for three flat semiconductor chips 1, 2 and 3.
  • the first semiconductor chip 1 contains the integrated capacitor, the second semiconductor chip 2 the integrated circuit arrangement and the third semiconductor chip 3 the ignition element. According to FIG.
  • the second and the third semiconductor chips 2 and 3 each have contact fields 4 on their broad sides, the contact fields 4 of the second semiconductor chip 2 being arranged on a protruding surface of the second semiconductor chip 2, so that in the case of stacked semiconductor chips 2, 1 and 3 a contacting of the third semiconductor die 3 with the second semiconductor die 2 is made possible via bonding wires 41.
  • the first semiconductor chip 1 is connected to the second semiconductor chip 2, preferably using the so-called “flip-chip technology”.
  • the two semiconductor chips 1 and 2 have contact fields 4, not shown, on the broad sides facing one another, which are stacked when the two semiconductor chips are stacked together face each other and create an electrical contact between the two semiconductor chips 1 and 2.
  • the individual semiconductor wafers are preferably connected to one another via an adhesive layer. If necessary, an additional insulating layer is required between the individual semiconductor chips, so that electrical short circuits between the semiconductor chips representing the individual components are avoided and electrical contacts are only made in a defined manner via the contact fields.
  • the third semiconductor chip is preferably a silicon substrate, on which a polysilicon layer with a thin cross-sectional area is applied. This thin cross-sectional area serves as a heating resistor when current flows. However, the heating resistor can also be integrated into the first semiconductor die. For this purpose, the first semiconductor wafer contains an area not penetrated by the aforementioned pores, but to which the polysilicon layer is applied, which also forms one of the capacitor electrodes.
  • the polysilicon layer is in turn formed in a defined area with a thin cross section, so that this area of the polysilicon layer forms the resistance heating element.
  • the second semiconductor die can also contain the ignition element.
  • an area of a polysilicon layer serving as the contact layer for the electrical circuit is exposed and serves in this exposed area as a resistance heating element.
  • the semiconductor die that contains the resistance element is preferably arranged at the top.
  • the lowermost semiconductor chip is preferably connected to the metal carrier 5 via an adhesive bond.
  • the metal carrier 5 serves on the one hand as a heat sink for the integrated circuit arrangement. On the other hand, it serves as a mechanically stable element for the igniter.
  • the metal support also serves as a protective shield against serious mechanical effects on the connector to the data bus or the data bus even if the ignition material explodes.
  • connection pins 6 each contain a decoupling resistor 61.
  • the filter capacitor 62 is arranged between two connecting pins 6.
  • a plastic holder only shown in the opening fixes the connecting pins 6 and the components 61 and 62.
  • the connecting pins 6 are part of a stamped grid punched out of a metal sheet. After the stamping process, the components 61 and 62 are attached to the stamped grid. In the following, the plastic holder 7 is sprayed around the lead frame. Excess electrical connections between the connection pins, which served for the mechanical stability of the lead frame during component assembly, are then punched out. The device created so far with the plastic holder 7 and the connecting pins 6 is subsequently connected to the metal carrier 5, the connecting pins 6 being pressed into glass insulations 51 of the metal carrier 5.
  • the semiconductor wafers are already attached to the metal carrier in a stacked manner. For this purpose, the individual semiconductor wafers are glued to one another or to the metal carrier.
  • the individual semiconductor wafers are already in contact with one another. Otherwise, after the metal carrier has been joined together with the semiconductor wafers and the plastic holder, 7 bond contacts are produced between the semiconductor wafers, where necessary, and bond contacts between the pins and contact fields of the integrated circuit arrangement.
  • the cap 8 is placed on the metal carrier 5 and tightly connected to it, for example by a flanging process.
  • the cap 8 has at its end face an opening through which the capsule formed by the cap 8 and the metal body 5 is filled, in particular pressed, in the following ignition material m.
  • the ignition material therefore surrounds the semiconductor chips 1 to 3 in the following.
  • the cap is then hermetically sealed with a cover (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

Système d'allumage utilisé en particulier pour le déclenchement de moyens de protection d'un passager dans un véhicule, comprenant un dispositif à circuit intégré (21) pour la commande d'un élément d'allumage (31) réalisé sous forme d'une puce (2), et un condensateur intégré (11) destiné à fournir l'énergie pour un processus d'allumage, réalisé sous la forme d'une autre puce (1). Les deux puces (1, 2) sont placées superposées dans une capsule du système d'allumage renfermant une poudre d'allumage. Les dimensions d'un système d'allumage conventionnel peuvent ainsi être maintenues.
PCT/DE1998/001779 1997-07-09 1998-06-29 Systeme d'allumage WO1999002937A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59805824T DE59805824D1 (de) 1997-07-09 1998-06-29 Anzünder
EP98941246A EP0993589B1 (fr) 1997-07-09 1998-06-29 Systeme d'allumage
JP50797599A JP3648256B2 (ja) 1997-07-09 1998-06-29 点火装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19729437.5 1997-07-09
DE19729437 1997-07-09

Publications (1)

Publication Number Publication Date
WO1999002937A1 true WO1999002937A1 (fr) 1999-01-21

Family

ID=7835195

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001779 WO1999002937A1 (fr) 1997-07-09 1998-06-29 Systeme d'allumage

Country Status (5)

Country Link
EP (1) EP0993589B1 (fr)
JP (1) JP3648256B2 (fr)
KR (1) KR100396964B1 (fr)
DE (1) DE59805824D1 (fr)
WO (1) WO1999002937A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951720A1 (de) * 1999-06-25 2000-12-28 Dynamit Nobel Ag Anzündeinheit mit integrierter Elektronik
DE10023964C1 (de) * 2000-05-16 2001-09-27 Siemens Ag Intelligente Zündpille
WO2001090679A1 (fr) 2000-05-26 2001-11-29 Robert Bosch Gmbh Dispositif d'allumage
WO2001094874A1 (fr) 2000-06-07 2001-12-13 Siemens Aktiengesellschaft Composant d'allumage pour declencher un moyen de protection de passagers dans une automobile
US6418853B1 (en) 1999-02-18 2002-07-16 Livbag Snc Electropyrotechnic igniter with integrated electronics
WO2003091077A1 (fr) * 2002-04-25 2003-11-06 Daicel Chemical Industries, Ltd. Procede de determination de la capacite de charge de condensateur
US7155353B2 (en) 2002-04-25 2006-12-26 Daicel Chemical Industries, Ltd. Method for determining charging capacitance of capacitor
EP2093534A1 (fr) * 2006-12-01 2009-08-26 Nippon Kayaku Kabushiki Kaisha Condensateur de montage d'élément d'allumage, ensemble panneau, amorce, générateur de gaz d'airbag, et générateur de gaz de prétension de ceinture de sécurité
EP2093533A1 (fr) * 2006-12-01 2009-08-26 Nipponkayaku Kabushikikaisha Ensemble collecteur, amorce, dispositif de production de gaz pour sac gonflable et dispositif de production de gaz pour prétensionneur de ceinture de sécurité

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6820557B2 (en) 2002-01-25 2004-11-23 Daicel Chemical Industries, Ltd. Igniter for air bag system
US6979020B2 (en) 2002-01-25 2005-12-27 Daicel Chemical Industries, Ltd. Air bag system
US7168737B2 (en) 2002-01-25 2007-01-30 Daicel Chemical Industries, Ltd. Integrated circuit for air bag system
US7083193B2 (en) 2002-03-01 2006-08-01 Daicel Chemical Industries, Ltd. Igniter for air bag system
JP4944584B2 (ja) * 2006-12-01 2012-06-06 日本化薬株式会社 ヘッダーアッシー、スクイブならびにエアバッグ用ガス発生装置およびシートベルトプリテンショナー用ガス発生装置
JP2008138931A (ja) * 2006-12-01 2008-06-19 Renesas Technology Corp 半導体装置
JP5364354B2 (ja) * 2008-12-08 2013-12-11 日本工機株式会社 携行型拘束網展開装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537820A1 (de) * 1985-10-24 1987-04-30 Dynamit Nobel Ag Elektronischer zuender
US4819560A (en) * 1986-05-22 1989-04-11 Detonix Close Corporation Detonator firing element
DE3842917C1 (en) * 1988-12-21 1989-11-30 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Fuze device for detonating a pyrotechnic charge
WO1996012926A1 (fr) * 1994-10-21 1996-05-02 Motorola Semiconducteurs S.A. Boitiers de dispositifs a semi-conducteurs
EP0863379A1 (fr) * 1997-03-07 1998-09-09 Livbag S.N.C. Initiateur électro-pyrotechnique constitué autour d'un circuit imprimé complet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537820A1 (de) * 1985-10-24 1987-04-30 Dynamit Nobel Ag Elektronischer zuender
US4819560A (en) * 1986-05-22 1989-04-11 Detonix Close Corporation Detonator firing element
DE3842917C1 (en) * 1988-12-21 1989-11-30 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Fuze device for detonating a pyrotechnic charge
WO1996012926A1 (fr) * 1994-10-21 1996-05-02 Motorola Semiconducteurs S.A. Boitiers de dispositifs a semi-conducteurs
EP0863379A1 (fr) * 1997-03-07 1998-09-09 Livbag S.N.C. Initiateur électro-pyrotechnique constitué autour d'un circuit imprimé complet

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6418853B1 (en) 1999-02-18 2002-07-16 Livbag Snc Electropyrotechnic igniter with integrated electronics
DE19951720B4 (de) * 1999-06-25 2007-06-06 Delphi Technologies, Inc., Troy Anzündeinheit mit integrierter Elektronik
DE19951720A1 (de) * 1999-06-25 2000-12-28 Dynamit Nobel Ag Anzündeinheit mit integrierter Elektronik
DE10023964C1 (de) * 2000-05-16 2001-09-27 Siemens Ag Intelligente Zündpille
WO2001090679A1 (fr) 2000-05-26 2001-11-29 Robert Bosch Gmbh Dispositif d'allumage
US6578486B2 (en) 2000-05-26 2003-06-17 Robert Bosch Gmbh Igniter
WO2001094874A1 (fr) 2000-06-07 2001-12-13 Siemens Aktiengesellschaft Composant d'allumage pour declencher un moyen de protection de passagers dans une automobile
WO2003091077A1 (fr) * 2002-04-25 2003-11-06 Daicel Chemical Industries, Ltd. Procede de determination de la capacite de charge de condensateur
US7155353B2 (en) 2002-04-25 2006-12-26 Daicel Chemical Industries, Ltd. Method for determining charging capacitance of capacitor
US7309079B2 (en) 2002-04-25 2007-12-18 Daicel Chemical Industries, Ltd. Method of determining charging capacitance of capacitor
EP2093534A1 (fr) * 2006-12-01 2009-08-26 Nippon Kayaku Kabushiki Kaisha Condensateur de montage d'élément d'allumage, ensemble panneau, amorce, générateur de gaz d'airbag, et générateur de gaz de prétension de ceinture de sécurité
EP2093533A1 (fr) * 2006-12-01 2009-08-26 Nipponkayaku Kabushikikaisha Ensemble collecteur, amorce, dispositif de production de gaz pour sac gonflable et dispositif de production de gaz pour prétensionneur de ceinture de sécurité
US8104403B2 (en) 2006-12-01 2012-01-31 Nipponkayaku Kabushikikaisha Header assembly, squib and gas generator for air bag and gas generator for seat belt pretensioner
EP2093533A4 (fr) * 2006-12-01 2012-10-31 Nippon Kayaku Kk Ensemble collecteur, amorce, dispositif de production de gaz pour sac gonflable et dispositif de production de gaz pour prétensionneur de ceinture de sécurité
EP2093534A4 (fr) * 2006-12-01 2012-11-07 Nippon Kayaku Kk Condensateur de montage d'élément d'allumage, ensemble panneau, amorce, générateur de gaz d'airbag, et générateur de gaz de prétension de ceinture de sécurité

Also Published As

Publication number Publication date
KR20010015552A (ko) 2001-02-26
DE59805824D1 (de) 2002-11-07
JP3648256B2 (ja) 2005-05-18
KR100396964B1 (ko) 2003-09-02
JP2000513799A (ja) 2000-10-17
EP0993589B1 (fr) 2002-10-02
EP0993589A1 (fr) 2000-04-19

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