WO2022268486A1 - Verfahren zur leistungskompensation in einem elektrischen ladesystem - Google Patents
Verfahren zur leistungskompensation in einem elektrischen ladesystem Download PDFInfo
- Publication number
- WO2022268486A1 WO2022268486A1 PCT/EP2022/065232 EP2022065232W WO2022268486A1 WO 2022268486 A1 WO2022268486 A1 WO 2022268486A1 EP 2022065232 W EP2022065232 W EP 2022065232W WO 2022268486 A1 WO2022268486 A1 WO 2022268486A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- charging
- line
- input
- distributor
- charging system
- 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.)
- Ceased
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
-
- 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
- B60L53/18—Cables specially adapted for charging electric vehicles
-
- 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
- B60L53/30—Constructional details of charging stations
-
- 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
- B60L53/60—Monitoring or controlling charging stations
-
- 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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/80—Time limits
Definitions
- the present invention relates to a method for power compensation in an electrical charging system for electrically charging motor vehicles.
- the invention further relates to such a charging system.
- the motor vehicle In the case of at least partially electrically driven motor vehicles, regular charging of an electrical energy store in the motor vehicle is necessary.
- the motor vehicle is usually connected to a charging connection that charges the motor vehicle.
- the present invention is concerned with the task of specifying improved or at least different embodiments for a method for power compensation in an electric charging system for charging motor vehicles and for such a charging system, which are characterized in particular by a simplified structure and/or improved accuracy.
- the present invention is based on the general idea of a charging system for charging motor vehicles with at least two Provide charging connections, wherein the respective charging connection is electrically supplied by a distributor, and wherein the respective charging connection is connected to the distributor by means of an associated electrical line.
- the electrical power fed in at an input of the respective line for charging a motor vehicle connected to the associated charging connection is also determined.
- Components, such as measuring devices for determining the power can therefore be omitted at the respective charging connection.
- the invention also provides that the length of at least one of the lines is determined and the length of the power loss occurring during charging is determined on the line. The power loss is then taken into account to compensate for the power arriving at the motor vehicle. This means that the charging system is still easy to implement and can be operated in a simplified manner, with the charging system being calibratable at the same time.
- the charging system therefore has the distributor and at least two charging connections.
- An associated electrical line is also provided for the respective charging connection, which connects the charging connection to the distributor.
- one end of the line also referred to below as the input
- the distributor is connected to the distributor and the other end, also referred to below as the output, is connected to the associated charging connection.
- the determination, in particular measurement, of the power fed in at the respective input when electrically charging a motor vehicle connected to the associated charging connection takes place.
- a An electrical signal that suddenly rises to an initial amplitude also referred to below as a jump signal, is fed in and thus applied.
- the hopping signal is reflected at the output of the line, with the reflected hopping signal reaching the input.
- the duration between the start time and the arrival of the reflected jump signal is determined in order to determine the length of the line from the duration.
- the power loss occurring during operation when charging a motor vehicle at the associated charging connection is then determined from the length of the line and taken into account when determining the power delivered at the output.
- the respective charging connection it is possible to arrange the respective charging connection at any desired distance from the distributor. It is conceivable to arrange the charging connections at different distances from the distributor.
- the lines can therefore have different lengths.
- the lines can each have lengths of several 10 meters.
- the distributor is in particular a charging station which supplies the associated charging connections and thus motor vehicles connected to them with electricity.
- the nature of the respective line is advantageously known or is determined beforehand.
- a specific resistance and/or a cross section and/or an impedance of the respective line are known or are determined beforehand.
- the jump signal is advantageously fed to the line at a resistor arrangement located at or in front of the input.
- This resistor arrangement is also referred to below as a feed resistor arrangement.
- the resistance value of the feed-in resistor arrangement preferably corresponds essentially to the impedance of the connected conductor.
- the jump signal is thus generated in a simplified and defined manner.
- the amplitude of the reflected jump signal thus essentially corresponds to twice the initial amplitude. As a result, the arrival of the reflected jump signal can be detected easily, reliably, and accurately. Consequently, the length of the conductor is determined more easily and precisely.
- substantially is also to be understood, for example, as a deviation of up to 15%, in particular up to 10%.
- “Essentially” particularly preferably means a deviation of less than 1%. This simplifies the detection of the reflected step signal at the input.
- the resistance of the feed resistor arrangement can be 59.9 ohms when the impedance of the connected conductor is 60 ohms.
- the injection resistor arrangement can consist of a single resistor.
- the feed resistor arrangement preferably consists of at least two, preferably two, individual resistors arranged in series. In this case, one of the resistors has a lower resistance value than the at least one other resistor.
- the resistor with the lower resistance value is also referred to below as the measuring resistor.
- the arrival of the reflected jump signal, in particular the amplitude of the jump signal, is preferably determined via the measuring resistor.
- the measuring resistor allows a simple, reliable and accurate detection of the signals at the input.
- the resistance value of the measuring resistor is 10 ohms, for example.
- a resistor arrangement is provided at the output or in the area of the output of at least one conductor.
- This resistor arrangement is considerably greater than that of the impedance of the associated conductor.
- This resistor arrangement is also referred to below as a reflection resistor arrangement.
- the resistance value of the reflection-resistance arrangement leads to a defined reflection of the jump signal at or in the area of the output. As a result, the length of the line can be easily, reliably, and accurately determined.
- "considerably greater” preferably means a resistance value of the reflection resistor arrangement which corresponds to at least twice the impedance of the connected conductor, preferably at least five times the impedance of the connected conductor, particularly preferably ten times the impedance of the connected conductor .
- the resistance value of the reflection-resistance arrangement is, for example, 940 ohms when the impedance of the connected conductor is 60 ohms.
- the reflection resistor arrangement can be spaced apart from the associated charging connection and can be arranged in the vicinity of the charging connection and thus in the area of the output.
- the reflection-resistance arrangement is preferably arranged at the output. In this case, it is advantageous to arrange the reflection-resistance arrangement in the associated charging connection. Thus, a more accurate power compensation takes place.
- the reflection resistor arrangement can have two or more resistors.
- the reflection resistor arrangement preferably has a single resistor. This leads to a more precise definition of the reflection and thus to a more accurate power compensation.
- the sum of the feed resistor arrangement and reflection resistor arrangement is preferably essentially 1000 ohms.
- the method according to the invention can be used for all conductive metals and/or alloys. Especially with high charging currents when charging with direct current and the resulting cable cross-sections, it is conceivable to use aluminum cables. This leads in particular to reduced costs.
- At least one of the lines preferably the respective line, advantageously has copper, and is in particular a copper line. This enables a simple and cost-effective implementation of the charging system with reduced power losses at the same time.
- the duration and thus the associated length are determined when the line is disconnected from the associated charging connection. This leads to an improved and/or defined reflection of the jump signal at the output.
- the duration can be determined more precisely and consequently the length can be precisely determined. This therefore results in an improved determination of the power loss.
- Embodiments are preferred in which the electrical resistance, ie the ohmic resistance or the impedance, of the line is determined from the length of at least one of the lines determined by means of the duration.
- the specific resistance of the line which has already been determined or is known, and a cross-section of the line are used.
- the power loss is then determined during charging and thus the flow of an electrical current through the line for charging a motor vehicle using the resistance of the electrical line.
- the quadratic relationship between the power loss and the electric current across the resistor can be assumed for this purpose.
- the arrival of the reflected jump signal at the input is preferably detected in that the amplitude of the signal present at the input increases abruptly, starting from the initial amplitude, in particular substantially to twice the initial amplitude. This means that the jump signal is monitored at the input and, if there is a sudden increase, the arrival of the reflected jump signal is concluded.
- the jump signal can be an electrical signal of any type.
- the jump signal is preferably a jump voltage which rises abruptly to the initial amplitude and which is applied to the input to determine the duration. This leads to a simple, energy-efficient and reliable determination of the duration and thus the length and consequently the power loss.
- the speed of propagation of electrical waves in the line is advantageously included.
- the propagation speed can be previously determined or stored. Since the propagation speed is typically several cm per ns (nanosecond), a very precise determination of the length of the line is thus made.
- the power compensation is advantageously implemented in such a way that the electrical power arriving at the motor vehicle is assumed to be the power fed in at the input of the line minus the power loss.
- the power compensation is advantageously used for billing purposes in order to determine the power output at the respective motor vehicle as precisely as possible despite the measurement of the electrical power fed in at the input that has taken place in the distributor.
- the charging system comprises the distributor and the at least two charging connections, which are each connected to the charging connection by means of an associated line.
- a power measuring device is preferably provided in the distributor, which during operation determines the electrical power fed in at the respective input. That
- the charging system in particular the distributor, also has a control device which is designed in such a way that it carries out a corresponding power compensation for at least one of the lines.
- the control device advantageously has a timer, which it starts when the step signal is applied and stops when the reflected step signal arrives at the input.
- control device can have another electrical time measuring device, which can determine the time between two applied edges.
- another electrical time measuring device can determine the time between two applied edges.
- An example of this is a digital time module or a so-called "time-to-digital converter".
- the respective charging connection is advantageously part of a charging point of the charging system.
- the charging system therefore advantageously has at least one charging point with at least one charging connection.
- the charging system preferably has two or more charging points, each with at least one charging connection, with the respective charging connection being connected to the distributor via an associated line.
- Fig. 1 is a greatly simplified, circuit diagram-like representation of a
- Fig. 2 shows a diagram for determining a length of a line of the
- Fig. 3 is a greatly simplified, circuit diagram-like detailed representation of
- FIG. 4 shows the illustration from FIG. 3 in another exemplary embodiment.
- the charging system 1 has at least two charging connections 8 for this purpose.
- a motor vehicle 2 can be connected to the respective charging connection 8 and thus charged.
- the charging system 1 also includes a distributor 4 which centrally supplies the charging connections 8 with electricity.
- the distributor 4 is therefore in particular a charging station 4.
- the charging system 1 therefore has at least one charging point 3 .
- the respective charging point 3 has a single charging connection 8 purely by way of example.
- the respective charging connection 8 is electrically connected to the distributor 4 by means of an associated electrical line 5 .
- the distributor 4 is expediently electrically connected to a mains connection (not shown).
- the respective line 5 is connected at one end 6, hereinafter also referred to as input 6, to the distributor 4 and at the other end 7, hereinafter also referred to as output 7, to the associated charging connection 8 and thus connects the associated charging connection 8 to the distributor 4.
- the respective line 5 typically has lengths of several 10 m. In the exemplary embodiment shown in FIG. 1, two charging connections 8 can be seen purely by way of example.
- the charging system 1 usually has three or more charging connections 8 which are each connected to the distributor 4 via an associated line 5 .
- the respective line 5 runs from the distributor 4 to the associated charging connection 8, to which a motor vehicle 2 is connected for charging.
- a charging cable 9 indicated by a broken line in FIG. 1 is connected to the charging connection 8 and to the motor vehicle 2 for this purpose.
- the distributor 4 also includes a device 10 which determines the electrical power fed in at the respective input 6 for charging a motor vehicle 2 connected to the associated charging connection 8 .
- the device 10 is also referred to below as a power measuring device 10 .
- the electrical power loss occurring along the associated line 5 is taken into account and compensated for.
- the electrical power fed in, determined by means of the power measuring device 10 , minus the power loss of the associated line 5 can be assumed to be the electrical power arriving at the motor vehicle 2 .
- the respective line 5 is made of copper, that is to say that the respective line 5 is a copper line 5a.
- Lines 5 made of aluminum alloys, for example, are also conceivable.
- the length of the line 5 is determined as described below.
- a signal suddenly rising to an initial amplitude A1 is applied to the input 6 and thus fed in, which is also referred to below as a step signal.
- the time t is shown along the abscissa axis 11 in FIG. 2 and the amplitude A of the step signal determined at the input 6 is shown along the ordinate axis 12, the step signal 13 being shown in FIG. 2 with a solid line.
- the step signal 13 is an electrical voltage and thus a step voltage 14.
- the step signal 13 applied to the input 6 with the initial amplitude A1 propagates through the line 5 and is reflected at the output 7 of the line 5.
- the reflected jump signal 13 then reaches the input 5 again, so that the amplitude A determined at the input 5 increases suddenly when the reflected jump signal 13 arrives at the input 6 .
- This increase takes place at an arrival time t2 of the reflected jump signal 13 at the input 6.
- a duration 17 between the start time t1 and the arrival time t2 can thus be determined, for example by means of a timer 15 (see FIG. 1).
- the duration 17 With the determined duration 17, the length of the line 5 can now be determined with the aid of the propagation speed of electric waves through the line 5.
- the conditioning speed is usually between 20 cm per ns (nanoseconds) and 25 cm per ns, so that the length of the line 5 can be determined very precisely.
- the described determination of the length of the line 5 is advantageously based on the duration 17 when the input 6 is connected to the distributor 4 and when the output 7 is disconnected from the charging connection 8, in particular the interface 8. This results in a defined and precise reflection of the Jump signal 13 at the output 7 and consequently an increased precision in determining the length of the line 5.
- FIGS. 3 and 4 show a simplified detailed view of the charging system 1 in the area of one of the lines 5.
- the resistor arrangement 19 is also referred to below as the feed resistor arrangement 19 .
- the resistance value of the feed-in resistor arrangement 19 essentially corresponds to the impedance of the line , deviating, for example, by less than 15%, in the exemplary embodiment shown by less than 1%, from the impedance of the line 5 .
- the feed resistor arrangement 19 of the exemplary embodiments shown has two resistors 18 arranged in series, which are also referred to below as measuring resistor 18a and additional resistor 18b. The input and the reflected step signal 13 are detected via the measuring resistor 18a, which is significantly smaller than the impedance of the line 5.
- the charging system 1 also has at least one arranged at or in front of the exit 7 Resistor 18 comprehensive resistor arrangement 20 on.
- the resistor arrangement 20 has a resistance value which is significantly greater than the impedance of the line 5, significant in this context meaning that the resistance value of the resistor arrangement 20 corresponds to at least twice, preferably at least five times, the impedance of the line 5.
- the resistance value of the resistor arrangement 20 corresponds to at least ten times the impedance of the line 5. Consequently, the step signal 13 fed in is reflected at the resistor arrangement 20, also referred to below as the reflection-resistance arrangement 20.
- the reflection-resistance arrangement 20 is from a single resistor 18c, which is also referred to below as a reflection resistor 18c.
- the resistance value of the reflection resistor 18c is considerably larger than the impedance of the line 5.
- the reflection resistor arrangement 20 and thus the reflection resistor 18c are provided directly at the output 7 and then in the associated charging connection 8 .
- the reflection resistor arrangement 20 and thus the reflection resistor 18c are provided directly in front of the associated charging connection 18.
- the sudden increase in the amplitude A present at the input 6 to an amplitude A2 which essentially corresponds to twice the initial amplitude A1 applies to the arrival time t2.
- the electrical resistance of the line 5, in particular the ohmic resistance of the line 5, is determined using the specific resistance of the line and the cross section of the line 5. definitely.
- the cross section of the line 5 is known or previously determined. Since the material of the respective line 5 is also known, in this case copper lines 5a, the specific resistance is also known, so that the ohmic resistance of the line 5 can be determined.
- the power loss on the line 5 can be determined during operation when charging a motor vehicle 2 by taking into account the electric current flowing through the line.
- the charging system 1 can have a control device 16 which is designed accordingly.
- the control device 16 is provided in the distributor 4 and also includes the timer 15.
- the determination of the duration 17 and thus the length of the lines 5 is advantageously carried out when the line 5 is connected to the input 6 on the distributor 4 for the first time.
- the length thus determined or the resistance thus determined can then be stored in the distributor 4 and/or in the control device 16 and taken into account in the power compensation.
- the charging system 1 allows a simple implementation of the charging system 1 for charging a plurality of motor vehicles 2 with a cost-effective implementation and increased precision of the electrical power arriving at the respective motor vehicle 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112022003174.3T DE112022003174A5 (de) | 2021-06-22 | 2022-06-03 | Verfahren zur leistungskompensation in einem elektrischen ladesystem |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021206408.6 | 2021-06-22 | ||
| DE102021206408.6A DE102021206408A1 (de) | 2021-06-22 | 2021-06-22 | Verfahren zur Leistungskompensation in einem elektrischen Ladesystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022268486A1 true WO2022268486A1 (de) | 2022-12-29 |
Family
ID=82117322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/065232 Ceased WO2022268486A1 (de) | 2021-06-22 | 2022-06-03 | Verfahren zur leistungskompensation in einem elektrischen ladesystem |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102021206408A1 (de) |
| WO (1) | WO2022268486A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546455C1 (de) * | 1995-12-13 | 1997-05-07 | Wandel & Goltermann | Meßverfahren und Meßanordnung zur Ermittlung der Länge einer elektrischen Leitung mit mehrfachen Reflexionen |
| KR102193414B1 (ko) * | 2020-03-20 | 2020-12-22 | 중앙제어 주식회사 | 전기차용 전력량 측정방법 및 장치 |
| DE102019134029A1 (de) * | 2019-12-11 | 2021-06-17 | Leoni Kabel Gmbh | Vorrichtung und Verfahren zum Ermitteln einer Temperaturverteilung einer Sensorleitung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9250283B2 (en) | 2011-06-17 | 2016-02-02 | Psiber Data Systems, Inc | System and method for automated testing of an electric cable harness |
| DE102011056501B4 (de) | 2011-12-15 | 2025-10-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Ladekabelerkennung |
| US9283852B2 (en) | 2012-05-09 | 2016-03-15 | Schneider Electric USA, Inc. | Diagnostic receptacle for electric vehicle supply equipment |
| US20140267712A1 (en) | 2013-03-15 | 2014-09-18 | Eaton Corporation | Theft alert system for electric vehicle charging cable |
| DE102017221298A1 (de) | 2017-11-28 | 2019-05-29 | Siemens Aktiengesellschaft | Messvorrichtung und Verfahren zur Erfassung einer von einer Ladestation übergebenen elektrischen Energie |
| DE102018125597B3 (de) | 2018-10-16 | 2020-02-06 | Isabellenhütte Heusler Gmbh & Co. Kg | Stromzähler und zugehöriges Betriebsverfahren |
-
2021
- 2021-06-22 DE DE102021206408.6A patent/DE102021206408A1/de not_active Withdrawn
-
2022
- 2022-06-03 WO PCT/EP2022/065232 patent/WO2022268486A1/de not_active Ceased
- 2022-06-03 DE DE112022003174.3T patent/DE112022003174A5/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546455C1 (de) * | 1995-12-13 | 1997-05-07 | Wandel & Goltermann | Meßverfahren und Meßanordnung zur Ermittlung der Länge einer elektrischen Leitung mit mehrfachen Reflexionen |
| DE102019134029A1 (de) * | 2019-12-11 | 2021-06-17 | Leoni Kabel Gmbh | Vorrichtung und Verfahren zum Ermitteln einer Temperaturverteilung einer Sensorleitung |
| KR102193414B1 (ko) * | 2020-03-20 | 2020-12-22 | 중앙제어 주식회사 | 전기차용 전력량 측정방법 및 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021206408A1 (de) | 2022-12-22 |
| DE112022003174A5 (de) | 2024-04-25 |
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