EP3417518B1 - Appareil de protection contre les surtensions - Google Patents

Appareil de protection contre les surtensions Download PDF

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Publication number
EP3417518B1
EP3417518B1 EP17706434.2A EP17706434A EP3417518B1 EP 3417518 B1 EP3417518 B1 EP 3417518B1 EP 17706434 A EP17706434 A EP 17706434A EP 3417518 B1 EP3417518 B1 EP 3417518B1
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EP
European Patent Office
Prior art keywords
üse
protection device
overvoltage protection
resistor
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17706434.2A
Other languages
German (de)
English (en)
Other versions
EP3417518A1 (fr
Inventor
Rainer Durth
Andrei Siegel
Steffen PFÖRTNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Contact GmbH and Co KG
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Phoenix Contact GmbH and Co KG
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Publication date
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Publication of EP3417518A1 publication Critical patent/EP3417518A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/04—Housings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/16—Series resistor structurally associated with spark gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/06—Mounting arrangements for a plurality of overvoltage arresters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors

Definitions

  • the invention relates to an overvoltage protection device.
  • So-called single-stage overvoltage protection devices have only a single overvoltage protection device, e.g. a gas-filled surge arrester (GDT - gas discharge tube). This has a high discharge capacity, but the protection level is high, so that smaller overvoltages are not discharged and can damage the downstream electrical systems that are actually to be protected.
  • GDT - gas discharge tube gas-filled surge arrester
  • GB 2 166 307 A shows a gas-filled arrester that is connected in parallel to a semiconductor arrester.
  • TVS - Transient Voltage Suppressor TVS - Transient Voltage Suppressor
  • GDT - gas discharge tube gas-filled surge arrester
  • a TVS diode has a discharge capacity of a few 100 A impulse current
  • a gas-filled surge arrester GDT - gas discharge tube
  • GDT - gas discharge tube can have a discharge capacity of a few kA.
  • This combination is made possible by commutation resistors that are connected between the gas-filled surge arrester (GDT - gas discharge tube) and the TVS diode (TVS - Transient Voltage Suppressor).
  • the commutation resistors themselves should have the lowest possible resistance so that electrical energy is not unnecessarily converted into thermal energy during operation.
  • the commutation resistors can also carry higher powers for a short time without being thermally affected, since otherwise the function of the overvoltage protection device is no longer guaranteed.
  • SMD resistors are not sufficiently suitable to carry higher powers without being thermally affected.
  • these SMD resistors often have a high price and also show significant problems in stability under thermal or electrical stress.
  • the Figures 1 and 2 show an overvoltage protection device 1.
  • the overvoltage protection device 1 has as in FIG Figure 2 shown a housing G, a first overvoltage protection device ÜSE 1 and a second overvoltage protection device ÜSE 2 .
  • the first overvoltage protection device ÜSE 1 has a first connection A 1 -ÜSE1 and a second connection A 2 -ÜSE 1 .
  • the second overvoltage protection device ÜSE 2 also has a first connection A 1 -ÜSE 2 and a second connection A 2 -ÜSE 2 .
  • the first overvoltage protection device ÜSE 1 and the second overvoltage protection device ÜSE 2 are selected from a group comprising TVS diodes, varistors, gas-filled surge arresters, and spark gaps.
  • the first overvoltage protection device ÜSE 1 and the second overvoltage protection device ÜSE 2 are different, ie the first overvoltage protection device ÜSE 1 is as in FIG Figure 1 shown for example a GDT while the second overvoltage protection device ÜSE 2 is, for example, a varistor.
  • the respective first connections A 1 -ÜSE 1 of the first overvoltage protection device ÜSE 1 and A 1 -ÜSE 2 of the second overvoltage protection device ÜSE 2 and / or second connections A 2 -ÜSE 1 , A 2 -ÜSE 2 are connected via at least one resistor R. .
  • a resistor R can be arranged.
  • a further resistor R of the same or a different electrical size can also be arranged between A 2 -ÜSE 1 and A 2 -ÜSE 2 . To distinguish the latter resistance is shown dotted.
  • the resistor R is formed from an organic electrically conductive material.
  • Organic electrically conductive materials can be of different nature and e.g. have intrinsically conductive polymers, or be plastic materials improved in their conductivity by carbon black or other conductive materials.
  • polyaniline or polyaniline with admixtures of other inorganic materials such as e.g. ZnO or other organic materials can be used.
  • resistors of suitable size e.g. 0.5 ohms to 4 ohms can be produced, which have excellent heat transfer properties, so that even high pulse currents do not lead to decomposition or damage.
  • resistors produced in this way can be produced inexpensively and also allow conventional processing, as will be carried out later.
  • the circuit arrangement presented is multi-stage. This multistage is not limited to two levels, but can be used as in Figure 1 also have 3 or more stages indicated.
  • Figure 1 is for example a TVS diode as a further stage Overvoltage protection device ÜSE 3 listed.
  • the IN side forms the unprotected side while the OUT side forms the protected side.
  • the resistor R is made in the housing G by an injection molding process, a polyreaction, i. a polymerization reaction, polycondensation reaction, a polyaddition reaction, or a rapid prototyping process.
  • a polyreaction i. a polymerization reaction, polycondensation reaction, a polyaddition reaction, or a rapid prototyping process.
  • FIG. 3a and 3b There different exemplary metallic molded parts S are shown that can be used with the invention. These metallic molded parts S are used to make electrical contact with the resistor R. They have a large surface on the side that is intended to contact the resistor R, which is provided, for example, by a large number of toothings. These toothings can be surrounded by the base material of the resistor R during manufacture and form a contact around them. In addition to electrical contact, the contact can also have a mechanical holding function. In addition, with a suitable configuration, a safety function can also be provided so that, for example, if an overvoltage protection device which is connected to a metallic molded part is heated inadmissibly, it is cut off.
  • the metallic molded parts S can also be designed in such a way that they contact the overvoltage protection device 1 to the outside, i.e. a device connection e.g. to a conductor L, make available.
  • the metallic molded parts S are part of a leadframe that is used during production and subsequently further processed, e.g. by cutting out and / or bending individual sections of a leadframe.
  • the base material of the resistors allows almost any structuring that is essentially limited by the processing, it can still be useful to set the resistors R afterwards for fine adjustment of the properties. This is possible, for example, by structuring. That is to say, after the resistance R has been established, an increase in resistance may be desired, for example as a result of a measurement. This can be achieved through targeted (structured) removal, for example using a laser.
  • suitable Structuring means are, for example, milling, grinding, stamping, embossing, chemical and / or physical etching.
  • a housing G is provided.
  • metallic molded parts S for providing contacts e.g. introduced in the form of a leadframe.
  • resistors R By means of an injection molding process, a polyreaction, or a rapid prototyping process, one or more resistors R are introduced, the resistance R being introduced between introduced metallic molded parts (S),
  • a first overvoltage protection device ÜSE 1 and a second overvoltage protection device ÜSE 2 are introduced and / or connected, the first overvoltage protection device ÜSE 1 and the second overvoltage protection device ÜSE 2 being selected from a group comprising TVS diodes, varistors, gas-filled surge arresters, spark gaps, wherein the first overvoltage protection device ÜSE 1 is different from the second overvoltage protection device ÜSE 2 .
  • the first overvoltage protection device ÜSE 1 has a first connection A 1 -ÜSE 1 and a second connection A 2 -ÜSE 1 and the second overvoltage protection device ÜSE 2 also has a first connection A 1 -ÜSE 2 and a second connection A 2 -ÜSE 2 , where the respective first connections A 1 -ÜSE 1 , A 1 -ÜSE 2 and / or second connections A 2 -ÜSE 1 , A 2 -ÜSE 2 are connected via at least one corresponding resistor R.
  • the steps do not have to be provided in the order shown above.
  • the step of connecting has at least one step selected from the group comprising reflow soldering, laser soldering, wave soldering, selective soldering processes, welding processes, pressing into suitably shaped receptacles.
  • the one step of structuring the resistor (R) for resistive matching can be provided as already described above.
  • the step of structuring can have at least one step selected from the group comprising milling, grinding, lasing, punching, embossing, etching.
  • individual molded parts S as well as components already connected to them such as overvoltage protection elements ÜSE 1 , ÜSE 2 , ÜSE 3 can be prefabricated as a leadframe.
  • a leadframe can then be inserted into a housing G and possibly fixed there. Then the resistors R are introduced and the superfluous parts of the leadframe are removed.
  • resistors R made of conductive plastic are designed in such a way that they connect individual components over a large area ensure and thus can fulfill the current-carrying function that would otherwise be performed by the conductor tracks on the circuit board.
  • a housing G that is as temperature-stable as possible (suitable for reflow soldering) is provided that preferably already has contours for receiving the molded parts S.
  • contacts for the terminals ie the external connections for conductor L, and for contacting the components, eg ÜSE 1 , ÜSE 2 , ÜSE 3 , can be attached in the housing G by squeezing, stamping or other methods.
  • the molded parts S can have several strips (fingers) to increase the effective contact area of the molded part S with the conductive plastic.
  • the conductive plastic (ohmic) connections between individual molded parts S are produced in a suitable manner. These plastic compounds can also fill the entire available area in order to ensure the largest possible area and thus good heat dissipation.
  • the invention can also be used in components used in MSR technology (measurement, control, and regulation).
  • components ÜSE 1 , ÜSE 2 , ÜSE 3 are kept suitable, the components are already provided with molded parts S and then the molded parts S are overmoulded with a resistor material R first on one side and then on the other side (eg by rotating the arrangement).

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (8)

  1. Dispositif de protection contre les surtensions (1) présentant un boîtier (G), un premier dispositif de protection contre les surtensions (ÜSE1) et un deuxième dispositif de protection contre les surtensions (ÜSE2), dans lequel le premier dispositif de protection contre les surtensions (ÜSE1) présente une première connexion (A1-ÜSE1) et une deuxième connexion (A2-ÜSE2) et le deuxième dispositif de protection contre les surtensions (ÜSE2) présente également une première connexion (A1-ÜSE2) et une deuxième connexion (A2-ÜSE2), dans lequel le premier dispositif de protection contre les surtensions (ÜSE1) et le deuxième dispositif de protection contre les surtensions (ÜSE2) sont choisis dans un groupe comprenant une diode TVS, une varistance, un parafoudre à gaz, un éclateur, dans lequel le premier dispositif de protection contre les surtensions (ÜSE1) est différent du deuxième dispositif de protection contre les surtensions (ÜSE2), dans lequel les premières connexions respectives (A1-ÜSE1, A1-ÜSE2) et/ou les deuxièmes connexions (A1-ÜSE1, A2-ÜSE2) sont connectées via au moins une résistance (R), dans lequel la résistance (R) est constituée d'un matériau organique conducteur de l'électricité, dans lequel des pièces moulées métalliques (S) sont prévues pour établir un contact électrique avec la résistance, dans lequel les pièces métalliques moulées (S) en vue de la mise en contact de la résistance fournissent une grande surface de contact, en ce que les pièces moulées métalliques (S) présentent une pluralité de dentures, et dans lequel la résistance (R) est formée dans le boîtier (G) par un processus de moulage par injection, une polyréaction ou un processus de prototypage rapide.
  2. Dispositif de protection contre les surtensions selon la revendication 1, caractérisé en ce que les pièces moulées métalliques (S) permettent en même temps la mise en contact du dispositif de protection contre les surtensions (1) avec l'extérieur.
  3. Dispositif de protection contre les surtensions selon la revendication 2, caractérisé en ce que les pièces métalliques moulées font partie d'une grille de connexion.
  4. Dispositif de protection contre les surtensions selon une des revendications précédentes, caractérisé en ce que les résistances (R) sont structurées.
  5. Procédé de fabrication d'un dispositif de protection contre les surtensions (1) selon la revendication 1 présentant les étapes de :
    • mise à disposition d'un boîtier (G),
    • présentation de pièces moulées métalliques (S) pour fournir des contacts,
    • introduction d'une résistance (R) par un processus de moulage par injection, une polyréaction, ou un procédé de prototypage rapide, dans lequel la résistance (R) constituée d'un matériau organique électriquement conducteur est insérée entre les pièces moulées métalliques (S),
    • présentation et connexion d'un premier dispositif de protection contre les surtensions (ÜSE1) et d'un deuxième dispositif de protection contre les surtensions (ÜSE2), dans lequel le premier dispositif de protection contre les surtensions (ÜSE1) et le deuxième dispositif de protection contre les surtensions (ÜSE2) sont sélectionnés parmi un groupe comprenant une diode TVS, une varistance, un parafoudre à gaz, un éclateur, dans lequel le dispositif de protection contre les surtensions (ÜSE1) est différent du deuxième dispositif de protection contre les surtensions (ÜSE2), dans lequel le premier dispositif de protection contre les surtensions (ÜSE1) a une première connexion (A1-ÜSE1) et une deuxième connexion (A2-ÜSE1) et le deuxième dispositif de protection contre les surtensions (ÜSE2) a également une première connexion (A1-ÜSE2) et une deuxième connexion (A2-ÜSE2), dans lequel les premières connexions (A1-ÜSE1, A1-ÜSE2) et/ou les deuxièmes connexions (A2-ÜSE1, A2-ÜSE2) respectives sont connectées via au moins une résistance (R).
  6. Procédé selon la revendication 5, caractérisé en ce que l'étape de connexion comprend au moins une étape choisie dans le groupe comprenant le brasage par refusion, le brasage laser, le brasage à la vague, les procédés de brasage sélectif, les procédés de soudage, le pressage dans des réceptacles de formes appropriées.
  7. Procédé selon la revendication 5 ou 6, comprenant en outre l'étape de structuration de la résistance (R) pour l'adaptation résistive.
  8. Procédé selon la revendication 7, caractérisé en ce que l'étape de structuration comprend au moins une étape choisie dans le groupe comprenant le fraisage, le meulage, le laser, le poinçonnage, le gaufrage, la gravure.
EP17706434.2A 2016-02-18 2017-02-17 Appareil de protection contre les surtensions Active EP3417518B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016202522.8A DE102016202522A1 (de) 2016-02-18 2016-02-18 Überspannungsschutzgerät
PCT/EP2017/053591 WO2017140830A1 (fr) 2016-02-18 2017-02-17 Appareil de protection contre les surtensions

Publications (2)

Publication Number Publication Date
EP3417518A1 EP3417518A1 (fr) 2018-12-26
EP3417518B1 true EP3417518B1 (fr) 2020-11-04

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ID=58098604

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Application Number Title Priority Date Filing Date
EP17706434.2A Active EP3417518B1 (fr) 2016-02-18 2017-02-17 Appareil de protection contre les surtensions

Country Status (4)

Country Link
EP (1) EP3417518B1 (fr)
CN (1) CN109075535B (fr)
DE (1) DE102016202522A1 (fr)
WO (1) WO2017140830A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3094148B1 (fr) * 2019-03-20 2021-04-16 Citel Dispositif de protection contre les surtensions
CN110086158B (zh) * 2019-05-24 2020-12-22 武汉晴川学院 一种电子电路过电压保护装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586104A (en) * 1983-12-12 1986-04-29 Rit Research Corp. Passive overvoltage protection devices, especially for protection of computer equipment connected to data lines
US4683514A (en) * 1984-10-03 1987-07-28 The M-O Valve Company Limited Surge voltage protective circuit arrangements
JPH0969416A (ja) * 1995-08-31 1997-03-11 Tdk Corp 正の温度特性を持つ有機抵抗体
CN2439737Y (zh) * 2000-07-07 2001-07-18 贵阳诚聚电子有限公司 防止家用电器被雷击的装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2017140830A1 (fr) 2017-08-24
CN109075535A (zh) 2018-12-21
DE102016202522A1 (de) 2017-08-24
CN109075535B (zh) 2020-04-14
EP3417518A1 (fr) 2018-12-26

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