CN113540889A - Charging receptacle with locking device for electric vehicle - Google Patents
Charging receptacle with locking device for electric vehicle Download PDFInfo
- Publication number
- CN113540889A CN113540889A CN202110388536.5A CN202110388536A CN113540889A CN 113540889 A CN113540889 A CN 113540889A CN 202110388536 A CN202110388536 A CN 202110388536A CN 113540889 A CN113540889 A CN 113540889A
- Authority
- CN
- China
- Prior art keywords
- locking
- charging
- charging socket
- locking pin
- pin
- 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.)
- Granted
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Classifications
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- 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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
- H01R13/6395—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap for wall or panel outlets
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- 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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
- H01R13/6397—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap with means for preventing unauthorised use
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- 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
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
-
- 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
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charging socket (1) for an electric vehicle having a locking device for receiving a charging plug of a charging device, having a charging socket-side contact sleeve (5) for inserting a contact pin on the charging plug side and having at least one charging socket-side locking pin (7), wherein the locking pin (7) can be moved into and out of a receiving space region (4) of the charging socket (1) transversely to an insertion direction by means of a controllable locking drive (6), wherein the locking pin (7) in the locking position engages in an associated locking structure when the charging plug is inserted in order to prevent an accidental disconnection of the charging plug. According to the invention, the locking pin (7) is made of polyphthalamide (PPA).
Description
Technical Field
The invention relates to a charging socket of an electric vehicle having a locking device for receiving a charging plug of a charging device, having a charging socket-side contact sleeve for inserting a contact pin on the charging plug side and having at least one charging socket-side locking pin which can be moved into and out of a receiving space region of the charging socket transversely to an insertion direction by means of a controllable locking drive, wherein the locking pin in the locking position engages with an associated locking structure when the charging plug is inserted in order to prevent an unintentional disconnection of the charging plug. The term electric vehicle is used herein as a general term for all vehicles with rechargeable traction batteries.
Background
A charging socket for an electric vehicle of the type according to the invention with a locking device for receiving a charging plug of a charging device is known from DE102010044138a 1. The known charging socket has a contact bushing on the charging socket side for inserting a contact pin on the charging plug side. The locking device is equipped with a locking pin on the charging socket side, which can be moved into and out of the receiving region of the charging socket transversely to the insertion direction by means of a controllable locking drive. When the charging plug is inserted, the locking pin engages in the locking position in the associated locking structure, in this case in a lateral recess of the charging plug, thereby preventing an accidental disconnection of the charging plug. Therefore, the charging device should be protected against unauthorized access, among other things. In addition, a sensor system is provided here, by means of which, if necessary, a locking caused by damage that cannot be carried out as intended is detected and indicated. Furthermore, a similar charging socket with a locking device is known from DE102011001436B3, wherein a failure of the locking is likewise detected and indicated by a locking detector device. Furthermore, a high-voltage plug connector for an electric vehicle is known from DE202019100047U1, in which an interlock device is integrated in a plug contour, which generates an electrical signal for evaluating electronic devices, depending on the connection state.
It is known that the locking pins used in the prior art have hitherto only been made of simple thermoplastics, for example polyamide 6(PA6) or polybutylene terephthalate (PBT) or of metal. It has been shown that locking pins made of these materials present a serious problem during charging in adverse conditions, wherein the locking pins can no longer be unlocked and therefore the charging plug can no longer be disengaged from the charging socket.
Such unfavorable charging conditions can be caused by weather, in particular in outdoor charging stations, for example when the charging plug is left in the charging socket overnight at sub-zero temperatures and the locking pin freezes in its locking position in the event of icing. During rapid charging, condensates may also adhere due to temperature fluctuations, which in turn lead to icing at sub-zero temperatures. Although there are mechanical emergency unlocking devices, the locking pin thus secured may not be unlocked or may only be unlocked with a great deal of force. In order to solve the above-mentioned problems, it has hitherto only been possible to provide expensive protection of the charging socket against moisture. Furthermore, the locking pins used hitherto have a relatively high wear and possibly insufficient mechanical strength, thereby adversely affecting the function of the locking device and, in extreme cases, leading to failure of the locking device.
Disclosure of Invention
The object of the invention is to further develop a charging socket with a locking device of the type according to the invention in such a way that the locking device can be operated in a frost-proof manner with simple measures and, in addition, is low in wear and has high mechanical strength.
The object is achieved by a charging socket for an electric vehicle having a locking device, for receiving a charging plug of a charging apparatus, having a contact bushing on the charging socket side for inserting a contact pin on the charging plug side; a locking pin on the charging socket side, which can be moved into and out of the receiving space region of the charging socket transversely to the insertion direction by means of a controllable locking drive, wherein the locking pin in the locking position engages with an associated locking structure when the charging plug is inserted in order to prevent an unintentional disconnection of the charging plug. The invention also discloses a preferable improved scheme.
According to the invention, the locking pin is made of polyphthalamide (PPA). It has been found that locking pins made of PPA have a significantly more pronounced freeze protection, low wear and higher mechanical strength than locking pins known in the prior art.
In a number of experiments, a material was sought for the locking pin of a charging socket of the type according to the invention, by means of which the locking pin no longer freezes and also has little wear in the case of high mechanical loadability. After a series of expensive failed attempts, the material polyphthalamide (PPA) was considered successful. The locking pins produced therewith have on the one hand a high mechanical strength and stiffness and surprisingly show a greatly reduced tendency to freeze under similar conditions and such locking pins generally do not freeze even under adverse environmental conditions. However, if icing does occur in very adverse weather conditions, the locking pin is strong enough to be unlocked without damage. This unlocking can be supported by combining the PPA-made locking pins with simpler thermoplastics, in particular with Polyamide (PA), in the charging socket, since the intermolecular attraction forces and frictional forces are small, and the unlocking force is correspondingly small.
Furthermore, it has been shown that, in particular with the locking pin according to the invention made of PPA, the adhesion of condensate due to temperature fluctuations is largely avoided in the case of a rapid charging process.
In a manner known per se, the locking drive may be a motor-driven linear drive for the locking pin, which can be controlled by the on-board electronics of the electric vehicle, which linear drive is arranged on the charging socket.
Furthermore, a mechanical, preferably directly or indirectly, in particular manually operable emergency unlocking device can also be arranged on the locking drive. It is also advantageous here if the locking pin made of PPA is combined with a simpler thermoplastic, in particular with Polyamine (PA), in the charging socket, where the emergency unlocking force to be expended is smaller.
The transmission part for displacing the locking pin in the lock drive is preferably made of a high performance polymer, such as polyphenylene sulfide (PPS), and/or of a metallic material, in order to be able to provide a relatively high driving force for the locking pin. In a new standard embodiment of a charging interface for electric vehicles, locking windows are provided in the charging socket and/or the charging plug for guiding and/or locking engagement of the locking pins. In order to be locked as intended, the locking pin must strike the locking window, which may be difficult if the charging plug is tilted due to its own weight and the heavy charging cable connected. It is therefore proposed that the locking pin be designed to taper towards the free end and/or to chamfer the free end area to simplify and facilitate introduction into such a window. In addition, the tapered design of the locking pin may facilitate demolding during its manufacture.
Drawings
Embodiments of the charging socket according to the invention are further explained with reference to the drawings. In the drawings:
FIG. 1 shows a perspective view of a charging receptacle, an
Fig. 2 shows a schematic cross-sectional top view along the line a-a in fig. 1.
Detailed Description
Fig. 1 shows a perspective view of a charging socket 1 for an electric vehicle with a locking device 2 for receiving a charging plug of a charging device (not shown). The charging socket 1 may be fixed on a wall of the electric vehicle by a fixing plate 3.
In the receiving space region 4 for the charging plug, a contact sleeve 5 on the charging socket side is provided for the contact pin on the charging plug side. A locking actuator 6 (highlighted with hatching in fig. 2) for locking the pin 7 is arranged laterally on the charging socket 1 as a linear actuator that can be controlled by the on-board electronics.
The locking drive 6 also has an emergency unlocking device 8 (not shown in detail), which emergency unlocking device 8 can be operated manually by means of a crank mechanism 9, for example by means of a bowden cable (not shown) connected thereto.
Fig. 2 shows a locking pin 7 made of PPA, which engages in its locking position in the receiving space region 4, in which it engages in a fastening recess there when the charging plug is inserted. In order to support the introduction of such a fixing groove, the locking pin 7 has a chamfer 10 on the end side. The linearly controlled displacement of the locking pin 7 into and out of its locking position shall be schematically shown by the double arrow 11.
List of reference numerals
1 charging socket
2 locking device
3 fixing plate
4 area of accommodation space
5 contact bushing
6 locking drive
7 locking pin
8 emergency unlocking device
9 crank link mechanism
10 chamfer
11 double arrow
Claims (7)
1. A charging socket (1) for an electric vehicle with a locking device (2) for receiving a charging plug of a charging apparatus,
the charging socket has a contact bushing (5) on the charging socket side for inserting a contact pin on the charging plug side; a locking pin (7) on the charging socket side, which locking pin (7) can be moved into and out of the receiving space region (4) of the charging socket (1) transversely to the insertion direction by means of a controllable locking drive (6), wherein,
the locking pin (7) in the locking position when the charging plug is inserted engages in an associated locking structure to prevent the charging plug from being accidentally disconnected,
it is characterized in that the preparation method is characterized in that,
the locking pin (7) is made of polyphthalamide (PPA).
2. Charging socket according to claim 1, characterised in that the locking drive (6) is a motor-driven linear drive for the locking pin (7) which can be controlled by the on-board electronics of the electric vehicle, said linear drive being arranged on the charging socket.
3. Charging socket according to claim 1 or 2, characterized in that a mechanical, preferably directly or indirectly, in particular manually operable emergency unlocking device (8) for the locking pin (7) is arranged on the locking drive (6) for release from the locking position.
4. Charging socket according to one of claims 1 to 3, characterized in that the locking pins (7) made of PPA are combined in the charging socket (1) with a simpler thermoplastic, in particular a Polyamine (PA).
5. Charging socket according to one of claims 1 to 4, characterized in that the transmission part of the locking drive (6) for displacing the locking pin (7) is made of a high-performance polymer, such as polyphenylene sulfide (PPS), and/or of a metallic material.
6. Charging socket according to one of claims 1 to 5, characterized in that a locking window for guiding the locking pin (7) and/or for locking engagement of the locking pin (7) is provided in the charging socket (1) and/or in the charging plug.
7. Charging socket according to one of claims 1 to 6, characterised in that the locking pin (7) is designed to taper conically towards the free end and/or has a chamfer (10) on the free end region.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020204713.8 | 2020-04-15 | ||
| DE102020204713.8A DE102020204713B4 (en) | 2020-04-15 | 2020-04-15 | Charging socket with a locking device for an electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113540889A true CN113540889A (en) | 2021-10-22 |
| CN113540889B CN113540889B (en) | 2023-07-04 |
Family
ID=77920085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110388536.5A Active CN113540889B (en) | 2020-04-15 | 2021-04-12 | Charging socket with locking device for electric vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113540889B (en) |
| DE (1) | DE102020204713B4 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012031586A2 (en) * | 2010-09-09 | 2012-03-15 | Kiekert Aktiengesellschaft | Actuator for a motor vehicle |
| CN102648373A (en) * | 2009-11-23 | 2012-08-22 | Ti集团机车系统公司 | Verification pin |
| DE102015215278A1 (en) * | 2015-08-11 | 2017-02-16 | Schaeffler Technologies AG & Co. KG | Anti-rotation device for a coupling bolt of a switchable component |
| CN106988514A (en) * | 2017-04-13 | 2017-07-28 | 马文财 | A kind of floor installation fitting dustless without nail |
| CN110682809A (en) * | 2018-07-05 | 2020-01-14 | 奥迪股份公司 | System and method for unlocking a charging plug inserted into a charging socket of a motor vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9944172B2 (en) | 2010-03-31 | 2018-04-17 | Kiekert Ag | Actuator for a motor vehicle and locking device and method |
| DE102010044138A1 (en) | 2010-11-18 | 2012-05-24 | Kiekert Ag | Charging plug with lock detection |
| DE102011001436B3 (en) | 2011-03-21 | 2012-07-19 | Küster Holding GmbH | Safety device for electrical plug connector device used in e.g. electric vehicle, provides electrical signal including information containing existence and nature of fault condition, if disturbance is detected by lock detector |
| JP6435356B2 (en) | 2017-02-01 | 2018-12-05 | 株式会社城南製作所 | Locking device for charging connector |
| DE202019100047U1 (en) | 2019-01-07 | 2019-01-31 | Lisa Dräxlmaier GmbH | High-voltage connector |
-
2020
- 2020-04-15 DE DE102020204713.8A patent/DE102020204713B4/en active Active
-
2021
- 2021-04-12 CN CN202110388536.5A patent/CN113540889B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648373A (en) * | 2009-11-23 | 2012-08-22 | Ti集团机车系统公司 | Verification pin |
| WO2012031586A2 (en) * | 2010-09-09 | 2012-03-15 | Kiekert Aktiengesellschaft | Actuator for a motor vehicle |
| DE102015215278A1 (en) * | 2015-08-11 | 2017-02-16 | Schaeffler Technologies AG & Co. KG | Anti-rotation device for a coupling bolt of a switchable component |
| CN106988514A (en) * | 2017-04-13 | 2017-07-28 | 马文财 | A kind of floor installation fitting dustless without nail |
| CN110682809A (en) * | 2018-07-05 | 2020-01-14 | 奥迪股份公司 | System and method for unlocking a charging plug inserted into a charging socket of a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020204713B4 (en) | 2022-07-07 |
| CN113540889B (en) | 2023-07-04 |
| DE102020204713A1 (en) | 2021-10-21 |
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