EP4594133A1 - Ladesteckverbinder für ein elektro- oder hybridfahrzeug - Google Patents
Ladesteckverbinder für ein elektro- oder hybridfahrzeugInfo
- Publication number
- EP4594133A1 EP4594133A1 EP23800734.8A EP23800734A EP4594133A1 EP 4594133 A1 EP4594133 A1 EP 4594133A1 EP 23800734 A EP23800734 A EP 23800734A EP 4594133 A1 EP4594133 A1 EP 4594133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- charging
- charging connector
- connector
- contacts
- communication module
- 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.)
- Pending
Links
Classifications
-
- 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
Definitions
- the invention relates to a charging connector for an electric or hybrid vehicle, with a housing and charging contacts arranged in the housing for conducting electrical current.
- Electric and hybrid vehicles have a rechargeable energy storage device, usually a high-voltage battery, which supplies energy to an electric drive motor during operation.
- the storage capacities of these high-voltage batteries are limited, so they must be regularly recharged at a charging station.
- the battery is charged using a charging cable provided between the charging station and the vehicle.
- the charging cable is equipped with a charging plug on one side, which can be plugged into a charging socket provided on the charging station, and with a charging coupling on the other side, which can be connected to a charging plug installed in the electric or hybrid vehicle, for example in accordance with the European standard IEC 62196.
- charging sockets, charging plugs, charging couplings and charging plugs are subsumed under the term "charging connector”.
- Charging sockets and charging couplings have contact sleeves as charging contacts, and charging plugs and charging plugs that can be installed in electric and hybrid vehicles have contact pins as charging contacts that are inserted into the
- Contact sleeves can be inserted.
- the plug contacts between a charging plug and a charging coupling are subject to increased wear on the surface due to frequent use and repeated plugging and unplugging. This wear leads to an increase in contact resistance, which can cause significant heat to develop during the charging process.
- Charging connectors for electric and hybrid vehicles are subject to legal and user-specific requirements regarding the temperature monitoring of AC and DC charging contacts.
- a temperature measurement is usually required on both DC charging contacts.
- a component suitable for temperature measurement usually an NTC resistor, is brought as close as possible to the heat source, i.e. the charging contact, in order to enable real-time temperature monitoring for charging optimization and safety monitoring.
- An NTC resistor is a resistor that is used in electronic components. It is also called a thermistor or hot conductor.
- the abbreviation "NTC” stands for "negative temperature coef ficient" and describes the property of hot conductors to conduct electricity better as the temperature increases because they have a negative temperature coef fi cient.
- PTC resistors are also known.
- a PTC resistor also called a thermistor or PTC thermistor (“positive temperature coefficient”), is also a temperature-dependent resistor, but at low Temperatures conduct electrical current better than at high temperatures.
- PTC resistors that have an almost linear characteristic curve (resistance as a function of temperature).
- PTC resistors that behave non-linearly and where the resistance increases sharply in the area of the nominal response temperature.
- Such PTC elements can therefore be used to implement a type of "safety" by returning a rapidly changing value to a reading system when the critical temperature is exceeded.
- Temperature monitoring may also be required for AC charging contacts. Depending on the standard and manufacturer specification, a real temperature measurement or only detection of exceeding a temperature threshold is required. This may be required either for all AC charging contacts (e.g. LI, L2, L3 and N for connectors in accordance with the European standard IEC 62196 Type 2), separately for each AC charging contact, or bundled, i.e. for all AC charging contacts together.
- AC charging contacts e.g. LI, L2, L3 and N for connectors in accordance with the European standard IEC 62196 Type 2
- DE 10 2015 106 251 A1 describes a temperature monitoring device with a support element extending flatly along a plane with at least one opening.
- the carrier element can be designed as a circuit board.
- the contact elements are components of a contact assembly that can be attached to the plug insert as a modular unit.
- the contact assembly has a temperature monitoring device with a carrier device element on .
- the temperature monitoring device serves to detect any impermissible heating on at least those contact elements that are used to transmit large currents during operation of the plug connector part.
- the carrier element has a metallic coating at each opening to provide a contact surface in the form of a plated-through hole.
- An electrical assembly with a temperature monitoring device is known from WO 2021/004765 A1.
- a connector part with both AC charging pins and DC charging pins is provided for this purpose.
- the connector part has an electrical assembly.
- This assembly consists of contact elements that are arranged on a support element and are electrically connected to associated load lines. For this purpose, each contact element is accommodated in an assigned receiving opening in the carrier element.
- the object of the invention is to design the communication between a charging connector for an electric or hybrid vehicle and an external device in a simple and efficient manner.
- a charging connector for an electric or hybrid vehicle with a housing, charging contacts arranged in the housing for conducting electrical current and a communication module for sending and/or receiving a serial signal.
- the basic idea of the invention is that different sensor data can be transmitted via just one or a few signal lines if a communication module is provided for sending and/or receiving a serial signal.
- the flow of information can be increased considerably in this way, which benefits additional diagnostic requirements and performance demands.
- the charging connector according to the invention that it is intended to be plugged into a corresponding charging connector.
- the communication module is designed in such a way that, when the charging connector is plugged in, it allows communication to and/or from the corresponding charging connector. In this way, communication is possible via a charging cable between a charging station and an electric or hybrid vehicle connected to the charging station with the charging cable.
- a charging connector that has the same connector face as the charging plug connector according to the invention, whereby one plug face has contact pins when the other plug face has contact sleeves, and vice versa.
- the set comprising the charging plug connector according to the invention and the corresponding charging plug connector can therefore be plugged together.
- the corresponding charging plug connector for example, does not have all of the contacts that are present in the charging plug connector according to the invention, but the existing contacts of the corresponding charging plug connector correspond to the charging plug according to the invention in terms of the plug face, so that the charging plug connector according to the invention and the corresponding charging plug connector can also be plugged together in this case.
- Such a case occurs, for example, with a charging coupling connected to a charging cable for direct current charging in accordance with the European standard IEC 62196 Type 2.
- Such a charging coupling can be plugged into a charging plug installed in the body of an electric or hybrid vehicle and suitable for alternating current charging as well as direct current charging, whereby in the alternating current plug face of the direct current charging coupling only the communication contacts and the protective contact are present, but no contacts for outer conductors and a center conductor for alternating current charging.
- the communication module can be located inside the housing. However, this is not absolutely necessary.
- the communication module can be be arranged inside or outside the housing. Arranging the communication module outside the housing can be particularly advantageous if the charging connector is a built-in charging plug that is attached to the body of an electric or hybrid vehicle. In this case, there is usually enough space within the body to install the communication module without it disturbing or hindering other equipment.
- the communication module comprises a multiplexer for multiplexing signals detected in or on the charging connector.
- a temperature sensor for detecting the temperature of the respective charging contact is arranged on a plurality of the charging contacts and that the temperature sensors are connected to the multiplexer, so that temperature signals originating from the temperature sensors can be transmitted to the multiplexer and can be converted from this to a serial data stream.
- Temperature monitoring of the DC charging contacts of a charging connector for an electric or hybrid vehicle is already required by the standard (European standard IEC 62196). However, it is preferably the case that the temperatures of the DC charging contacts should also be monitored, and preferably all AC charging contacts.
- DC charging contacts which are intended exclusively for charging with direct current. With such direct current charging contacts, heating occurs to a particular extent when charging with high currents.
- AC charging contacts This refers to the external conductors and the neutral conductor (center conductor), which are also intended for charging with alternating current.
- An external conductor also known colloquially as a phase
- a neutral conductor is a conductor that is electrically connected to the neutral point and capable of contributing to the distribution of electrical energy.
- the contacts which are referred to here as AC charging contacts, are designated LI, L2 and L3 (outer conductor) and N (neutral conductor) and the DC charging contacts are designated DC+ and DC-.
- LI, L2 and L3 (outer conductor) and N neutral conductor
- DC+ and DC- the contacts
- This understanding should not be contradicted by the fact that the European standard IEC 62196 also recognizes an operating mode according to which direct current charging takes place via the contacts LI, L2, L3 and N.
- a separate signal line would have to be connected to an evaluation unit for each AC contact to monitor the temperatures of the AC charging contacts.
- a series circuit can be used, e.g. made up of PTC elements. Such a series circuit However, the serial connection does not allow any conclusions to be drawn about the individual temperature of individual AC charging contacts.
- the use of a multiplexer now makes it possible to bundle signals and send them serially via a single signal line.
- the multiplexer can either be controlled via control lines so that a respective channel is selected, or a periodic change of channels is triggered via a clock generator and synchronized with the evaluation unit.
- At least one control line is connected to the multiplexer in order to control the temporal sequence of the temperature signals from the temperature sensors in the serial data stream.
- the temperature signals from the temperature sensors may follow one another periodically in the serial data stream.
- multiplexer By using the multiplexer, many signal lines can be bundled into one. Depending on the number of inputs, an appropriate multiplexer must be selected (four inputs to one output - 4:1, eight inputs to one output - 8:1, etc. The number of control lines also increases with the number of inputs. A 4:1 multiplexer requires two control lines, an 8:1 multiplexer requires three.
- One advantage of external control of the multiplexer is that only the lines that are currently of interest to the evaluation unit can be queried. So if only AC charging occurs, the DC temperature sensors can be ignored and more time can be used for the AC temperature sensors. As said, alternatively, a periodic query of all input signals can take place and the clock of the multiplexer can then be synchronized with the evaluation unit. This reduces the number of control lines to one for the clock generator, but also leads to a reduction in flexibility, since each input line is now mapped to the output the same number of times and for the same length of time.
- the communication module can additionally or alternatively be set up to receive digital signals.
- the communication module is set up for bidirectional communication of serial signals.
- the charging connector can not only send signals but also receive them, e.g. to control a device of the charging connector.
- the charging connector is additionally provided with an actuator and a control device for controlling the actuator, wherein the communication module is connected to the control device for transmitting a control signal received by the communication module.
- the charging connector is a charging plug for attachment to the body of an electric or hybrid vehicle.
- the invention also relates to the use of a previously described charging connector on the body of an electric or hybrid vehicle.
- the invention also relates to a method for communication between a charging connector for an electric or hybrid vehicle and a device different from the charging connector, the communication taking place by means of a serial signal.
- the charging connector outputs a signal converted by a multiplexer.
- the charging connector sends and/or receives a digital signal. Further refinements, functions and advantages of this method arise in analogy to the previously described charging connector.
- Fig. 1 shows a charging connector in a perspective view according to a preferred embodiment of the invention
- FIG. 2 to the charging connector from Fig. 1 corresponding charging connector in a perspective view
- Fig. 3 schematically shows a charging connector according to a preferred exemplary embodiment of the invention with a multiplexer
- Fig. 4 schematically shows a charging connector according to a preferred exemplary embodiment of the invention with a digital part for receiving digital control data.
- FIG. 1 shows a charging connector 1 according to a preferred exemplary embodiment of the invention in a perspective view.
- the charging connector 1 has a housing 2 and charging contacts 3 arranged in the housing 2. These are, on the one hand, AC charging contacts 8 for AC charging and, on the other hand, DC charging contacts 9 for DC charging.
- the one in Fig. 1 shown charging connector 1 is a charging connector for installation in the body of an electric or hybrid vehicle.
- the charging connector 1 can be coupled to a corresponding charging connector 12, which is shown in Fig. 2.
- This is a charging coupling that can be attached to a charging cable and can be plugged together with the charging plug.
- the charging coupling shown here as an example is one for direct current charging and therefore has corresponding direct current charging contacts 13, a protective contact 14 and signal contacts 15. Both the charging plug shown here and the coupling shown here correspond to Their mating face corresponds to the European standard IEC 62196 .
- the charging connector is namely equipped with a communication module 4 for sending a serial signal.
- the communication module 4 has a multiplexer 5 for multiplexing signals detected in the charging connector 1.
- both the DC charging contacts 9 and the AC charging contacts 8 are each provided with a temperature sensor 6.
- the temperature sensors 6 are NTC elements in the present case.
- the respective temperature can be determined individually at each direct current charging contact 9 or at each alternating current charging contact 8.
- the temperature sensors 6 are now connected to the multiplexer 5 in such a way that the temperature signals originating from the temperature sensors 6 are transmitted to the multiplexer 5 so that they can then be converted by the multiplexer into a serial data stream.
- This serial data stream is then fed via the signal lines 7 to an evaluation unit (not shown in more detail), which is designed separately from the charging connector 1.
- control lines could be connected to the multiplexer 5 in order to control the temporal sequence of the temperature signals from the temperature sensors 6 in the serial data stream. With the help of such control lines, it could be determined which temperature sensor 6 data is of interest and should therefore be fed to the evaluation unit.
- the temperature signals from the temperature sensors 6 follow one another periodically in the serial data stream.
- a sequence of temperature signals could be provided in which the temperature signals for the two direct current charging contacts 9 are followed by the temperature signals for the four alternating current charging contacts 8, etc., i.e., using the nomenclature from the European standard IEC 62196, the sequence would be "DC+, DC-, LI, L2, L3, N, DC+, . . . ".
- Fig. 4 now shows schematically a charging connector 1 according to another preferred exemplary embodiment of the invention with a digital part 16 arranged in the communication module 4 for receiving digital control data.
- control data is received from outside the charging connector 1 via the signal lines 7 in order to initiate control for a component of the charging connector 1.
- the charging connector 1 has a locking flap 17, with which the opening within which the AC charging contacts 8 and the DC charging contacts 9 are arranged can be closed and locked to the outside.
- An actuator 10 is provided for opening and closing this locking flap 17, here in the form of an electric motor.
- the actuator 10 is connected to a control device 11, by means of which the actuator 10 can be controlled in such a way that the locking flap 17 opens or. closes.
- Corresponding signals that indicate opening or Closing of the locking flap 17 is supplied to the control device 11 from outside the charging connector, namely via the signal lines 7 and the communication module 4 having the digital part 16.
- the communication module 4 in the present case is set up for bidirectional communication of serial signals, so that it can not only receive signals that specify whether the locking flap 17 should be closed or opened. Rather, it is also possible here for the control device to transmit data to the digital part 16 of the communication module 4 that indicates what the position of the locking flap 17 is, i.e. open or closed, so that this information is available in the form of digital data via the S signal lines 7 can be output.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022124712.0A DE102022124712B4 (de) | 2022-09-26 | 2022-09-26 | Ladesteckverbinder für ein Elektro- oder Hybridfahrzeug sowie Verwendung desselben an der Karosserie eines Elektro- oder Hybridfahrzeugs |
| PCT/DE2023/100674 WO2024067910A1 (de) | 2022-09-26 | 2023-09-12 | Ladesteckverbinder für ein elektro- oder hybridfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4594133A1 true EP4594133A1 (de) | 2025-08-06 |
Family
ID=88695722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23800734.8A Pending EP4594133A1 (de) | 2022-09-26 | 2023-09-12 | Ladesteckverbinder für ein elektro- oder hybridfahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4594133A1 (de) |
| CN (1) | CN119866279A (de) |
| DE (1) | DE102022124712B4 (de) |
| WO (1) | WO2024067910A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3605627A1 (de) * | 1986-02-21 | 1987-08-27 | Elektron Bremen | Verfahren und vorrichtung zur uebertragung der daten einer spannungsquelle (batterie) auf eine datenverarbeitungsanlage |
| DE10054745B4 (de) * | 2000-05-17 | 2010-07-29 | Continental Teves Ag & Co. Ohg | Verfahren zur sicheren Übertragung von Sensorsignalen und Vorrichtung zum Ausführen des Verfahrens |
| DE102007043872A1 (de) * | 2007-09-14 | 2009-04-02 | Siemens Ag | Antriebsanordnung |
| US7733236B2 (en) * | 2007-09-24 | 2010-06-08 | John Mezzalingua Associates, Inc. | Coaxial cable connector and method of use thereof |
| DE102010022908B4 (de) * | 2010-06-07 | 2024-06-13 | Vitesco Technologies GmbH | Batterie mit Temperaturerfassung, sowie Verwendung einer derartigen Batterie |
| DE102010045131A1 (de) * | 2010-09-11 | 2012-03-15 | Magna E-Car Systems Gmbh & Co Og | Steckverbinder für ein Elektrofahrzeug |
| DE102015106251A1 (de) | 2015-04-23 | 2016-10-27 | Phoenix Contact E-Mobility Gmbh | Steckverbinderteil mit einer Temperaturüberwachungseinrichtung |
| LU101309B1 (de) | 2019-07-11 | 2021-01-11 | Phoenix Contact E Mobility Gmbh | Elektrische Baugruppe mit einer Temperaturüberwachungseinrichtung |
-
2022
- 2022-09-26 DE DE102022124712.0A patent/DE102022124712B4/de active Active
-
2023
- 2023-09-12 WO PCT/DE2023/100674 patent/WO2024067910A1/de not_active Ceased
- 2023-09-12 CN CN202380068607.0A patent/CN119866279A/zh active Pending
- 2023-09-12 EP EP23800734.8A patent/EP4594133A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022124712A1 (de) | 2024-03-28 |
| CN119866279A (zh) | 2025-04-22 |
| WO2024067910A1 (de) | 2024-04-04 |
| DE102022124712B4 (de) | 2024-07-25 |
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