EP2941800A1 - Safe electric pickup for automotive applications - Google Patents
Safe electric pickup for automotive applicationsInfo
- Publication number
- EP2941800A1 EP2941800A1 EP13818345.4A EP13818345A EP2941800A1 EP 2941800 A1 EP2941800 A1 EP 2941800A1 EP 13818345 A EP13818345 A EP 13818345A EP 2941800 A1 EP2941800 A1 EP 2941800A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductor
- cable
- phase
- neutral
- socket
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
Definitions
- the invention relates to a pluggable device for vehicles.
- the invention relates to a secure electrical outlet, in which accidental pulling on the cable such as tearing does not cause venting of the electrical conductors son under tension of the cable.
- a hybrid or electric motor car is generally equipped with one or more electric motors.
- a storage battery provides the energy, which initially comes from the cable charging from an external power source.
- Electric motors are distinguished from gasoline or diesel engines by their lack of gas emission, particle rejection and their ability to operate in a generally silent manner.
- the batteries allow the current state to provide a range of between 100 km and 300 km, which is less than the autonomy provided by a motor vehicle equipped with a traditional gasoline engine for example. It is therefore important to regularly recharge the batteries of an electric car, either at home or at a central charging station.
- the electric cars are provided with sockets, typically of 230 V sockets.
- the vehicle is usually connected by a cable with a socket on the car side and a socket on the side of the wall base.
- the wall base is the point of attachment to the electricity distribution network.
- the cable becomes integral with both systems. Pulling on the cable may cause the conductors of the cable to be vented to the open, which can remain connected. This represents a potential security risk, including a risk of short circuit, which is to be avoided. Traction may occur accidentally, for example during the attachment of the cable by a vehicle, during the movement of the connected car, or other.
- a bulky box is arranged in series on the power cable.
- the housing includes an active device that detects in real time the proper cable connection on both sides: wall side and vehicle side.
- the patent document FR 2659801 A1 has a socket plug facilitating disconnection by avoiding the possibility of short circuit.
- An annular ring makes it possible to release the tension on the conductors and to facilitate the withdrawal of the plug.
- DE 3743499 C1 discloses an electrical connection that connects a trailer to a car. A clamp prevents the exit of the cables from the socket.
- Patent application WO 9107792 discloses a cable entry in a housing, comprising a cable extension to protect the connector from traction.
- the invention aims to provide an electrical outlet for vehicles overcomes at least one of the aforementioned drawbacks or presenting itself as an alternative to the mentioned solutions.
- the invention relates to an electrical socket for a vehicle.
- the socket comprises a housing and connecting means for connecting the conductors of a cable which is attached to the housing to corresponding contacts or contact pins.
- the socket is remarkable in that the connection means of the phase conductor and the neutral conductor are able to break their respective connections before the connection means of the earth conductor following the application of a tensile force on the cable.
- connection means of the earth conductor may comprise a portion of conductive wire which is able to absorb a traction force applied to the cable. It is an extension of the earth conductor wire with respect to the length of the neutral and phase conductor wires.
- connection means of the earth conductor may preferably comprise lead wires of larger section than the connection means of the phase conductor and the neutral conductor.
- the connection means of the phase conductor and / or the neutral conductor may have a breaking zone having a low resistance to the application of a tensile force on the cable.
- the rupture zone can be defined by a portion of conductive wire reduced section.
- connection means of the phase conductor and / or the neutral conductor may preferably comprise an assembly crimped lugs that can be disconnected when traction is performed.
- connection means of the earth conductor may comprise a welded joint.
- the device may comprise at least one switch which is arranged to break the connections of the phase conductor and / or the neutral conductor following the application of a traction force on the cable.
- the switch may preferably be connected to a wire element of the cable different from the neutral, phase and earth conductors, or directly to the earth cable to limit the number of additional pieces.
- the insulating sheath of the earth conductors, phase and neutral, and the insulating sheath of the cable can preferably be attached to the housing of the socket. This, so that the traction on the cable causes a movement of the conductive wire in the sheath before the disconnection of the latter of the housing and so that the conductors are not left in the open air.
- the plug according to the present invention is a 230 V or 380V or 1 10V domestic socket.
- mechanical systems protect the conducting wires of the phase and the neutral.
- These security systems are integrated into the socket during its assembly.
- the plug is preferably used on the side of the branch to the electrical distribution network.
- a cascade of disconnections takes place sequentially. First, the phase and neutral metal conductors are disconnected from the network. Secondly, the earth conductor is disconnected. Finally, in the event of tearing, the insulation of the cable and / or the conductive wires releases the plug only after the secure disconnection of all the conductive wires.
- the proposed solution has a simple, inexpensive and reliable implementation, which is preferably used on electric car charging cables.
- the invention similarly finds its utility in all applications that may involve a potentially moving element connected to the power grid. Examples include a motorhome or a boat connected to the power grid in a harbor.
- Other features and advantages of the present invention will be better understood from the description and the drawings, among which:
- FIG. 1 is a schematic illustration of the interior of a socket according to a preferred embodiment of the present invention, when the links of all the conductors are connected;
- Figure 2 is a schematic illustration of the interior of a socket according to a preferred embodiment of the present invention, when the links of the phase and neutral conductors have been disconnected;
- Fig. 3 is a schematic illustration of the interior of a socket according to an alternative embodiment of the present invention, when the links of all the conductors are connected.
- FIG. 1 schematically illustrates a socket 1 10 according to the present invention.
- the socket comprises a housing or body 1 12, which corresponds to the part that is generally handled by a user.
- a cable 150 having an insulating sheath 152 is attached to the housing 1 12.
- the cable generally corresponds to a 230V power supply cable and comprises, in known manner, a conductor phase 121, a neutral conductor 131 and a conductor 141 intended to be connected to a zero potential, the earth.
- the three conductors are surrounded by insulating sheaths 122, 132, 142 respectively.
- the situation illustrated in Figure 1 corresponds to the normal operating situation of the socket.
- Connecting means 120, 130, 140 establish connections between the conductors 121, 131 and 141 of the cable and the pins or corresponding contacts 123, 133 and 143 of the socket.
- the contact 123 corresponds to a phase contact
- the contact 133 corresponds to a neutral contact
- the contact 143 corresponds to the earth contact.
- Each contact preferably comprises receiving means 126, 136, 146, which serve to fix the conductors 121, 131, 141 to the contacts 123, 133, 143 during the assembly of the socket.
- the socket 1 10 may correspond to a plug or socket.
- the socket is remarkable in that it comprises at least one safety mechanism, the purpose of which is to prevent venting of the live conductors 121, 131, 141 without first disconnecting them. Indeed, when the plug is connected to a device or an electrical distribution network, the conductors 121 and 131 are carrying electric current. A pulling force 160 applied, accidentally or not, on the cable 150 may result in venting of the conductors, which generates the risk of generating a short circuit.
- the safety mechanism is arranged so that, under the effect of a traction force 160 applied, the conductors 121 and 131 are disconnected first, followed by a disconnection ground conductor 141.
- This is accomplished by providing preprogrammed break zones 124, 134 on the phase and neutral conductors respectively.
- the preprogrammed failure zone 124, 134 may be characterized by a conductor section with a reduced section relative to its ordinary section. When pulling on such a conductor, the section reduced section will yield first, so as to break the electrical contact in a controlled manner.
- an extension portion 145 is provided on the driver 141.
- the conductor 141 therefore has a longer length within the housing, between its output cable 150 and its connection to the contact 143, the phase and neutral conductors.
- the extension 145 will initially be able to absorb at least a portion of the effect of the pulling force. During this time, the connection means of the phase and neutral conductors will already be disconnected from the respective conductors.
- the situation after or during the application of the tractive force is illustrated in FIG. 2. While the conductors 121 and 131 have been broken under the tensile force, the ground conductor 141 has a more tense look, but stay connected. An application followed by the pulling force will also disconnect the grounding conductor.
- the insulating sheath of the cable 152, and / or the insulating sheaths of the conductive wires 122, 132, 142 may be attached to the housing 1 12, for example by welding.
- This configuration ensures a cascade of disconnections in case of traction on the cable.
- the metal conductors can move in their respective sheaths. In the first place the rigid phase and neutral conductors are disconnected. Then, the rigid earth conductor is disconnected, after the use of its displacement reserve. Lastly, the flexible insulating sheaths will yield. At this moment, all the electrical connections have already been broken automatically, so as to greatly reduce the security risk.
- the metal conductors of phase 121 and neutral 131 have a smaller cross section than the metallic earth conductor 141.
- the driver is therefore generally more resistant to traction than phase and neutral conductors.
- the described safety mechanism can also be complemented by a differentiated fixing of the phase 121 and neutral conductors 131 relative to the fixing of the earth conductor.
- the phase conductors 121 and neutral 131 are fixed to the receiving means 126, 136 of the respective contacts 123, 133 by an assembly crimped lugs. This assembly establishes the necessary connection by a deformation of material.
- FIG. 3 schematically illustrates another embodiment of the tap according to the present invention.
- the socket includes a housing or body 212, which corresponds to the portion that is generally manipulated by a user.
- a cable 250 having an insulating sheath 252 is attached to the housing 212.
- the cable generally corresponds to a 230V power supply cable and comprises, in known manner, a phase conductor 221, a neutral conductor 231 and a conductor 241 for be connected to a zero potential, the earth.
- the three conductors are surrounded by insulating sheaths 222, 232, 242 respectively.
- the situation illustrated in Figure 3 corresponds to the normal operating situation of the socket.
- Connecting means 220, 230, 240 establish connections between the conductors 221, 231 and 241 of the cable and the corresponding pins or contacts 223, 233 and 243 of the socket.
- the contact 223 corresponds to a phase contact
- the contact 233 corresponds to a neutral contact
- the contact 243 corresponds to the earth contact.
- Each contact preferably comprises receiving means 226, 236, 246, which serve to fix the conductors 221, 231, 241 to the contacts 223, 233, 243 during assembly of the socket.
- the plug 210 may correspond to a plug or a socket.
- the safety mechanism relating to the earth conductor is similar to that illustrated and described in FIGS. 1 and 2.
- the preprogrammed break zones 224, 234 of the connection means 220, 230 of the phase and neutral conductors are implemented by at least one switch, which is closed when the plug is operational.
- the cable 250 may comprise an additional wire 271 which is connected to at least one switch, so as to open this switch when a pulling force 260 is applied to the cable. In this way, the electrical connections of the phase and neutral conductors are disconnected immediately and automatically.
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1350055A FR3000847B1 (en) | 2013-01-04 | 2013-01-04 | SECURE ELECTRICAL SOCKET FOR AUTOMOTIVE APPLICATIONS |
PCT/FR2013/053164 WO2014106705A1 (en) | 2013-01-04 | 2013-12-18 | Safe electric pickup for automotive applications |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2941800A1 true EP2941800A1 (en) | 2015-11-11 |
Family
ID=48901061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13818345.4A Withdrawn EP2941800A1 (en) | 2013-01-04 | 2013-12-18 | Safe electric pickup for automotive applications |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2941800A1 (en) |
CN (1) | CN104919661B (en) |
FR (1) | FR3000847B1 (en) |
WO (1) | WO2014106705A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9516506D0 (en) * | 1995-08-11 | 1995-10-11 | Amp Gmbh | Seal carrying contact for a connector assembly |
US5934943A (en) * | 1996-05-14 | 1999-08-10 | Centerpin Technology, Inc. | Electrical connector |
US6435903B1 (en) * | 2000-10-19 | 2002-08-20 | Eric L. Nelson | Electrical outlet fixture recessible in a housing |
DE102006016137A1 (en) * | 2006-04-06 | 2007-10-11 | Robert Bosch Gmbh | Plug-in device for contacting the high-voltage module of a hybrid vehicle and high-voltage module of a hybrid vehicle |
GB2457217A (en) * | 2007-04-11 | 2009-08-12 | Baruch Entpr Ltd | Cascadable electrical connector |
JP5479036B2 (en) * | 2009-11-13 | 2014-04-23 | 富士通コンポーネント株式会社 | Connector device, female connector, and male connector |
-
2013
- 2013-01-04 FR FR1350055A patent/FR3000847B1/en not_active Expired - Fee Related
- 2013-12-18 WO PCT/FR2013/053164 patent/WO2014106705A1/en active Application Filing
- 2013-12-18 EP EP13818345.4A patent/EP2941800A1/en not_active Withdrawn
- 2013-12-18 CN CN201380069337.1A patent/CN104919661B/en not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2014106705A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR3000847B1 (en) | 2016-07-01 |
CN104919661B (en) | 2017-08-08 |
FR3000847A1 (en) | 2014-07-11 |
CN104919661A (en) | 2015-09-16 |
WO2014106705A1 (en) | 2014-07-10 |
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Legal Events
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PSA AUTOMOBILES SA |
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17Q | First examination report despatched |
Effective date: 20171010 |
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Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20180615 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20181026 |