CN111712401B - Charge control device for motor vehicle - Google Patents
Charge control device for motor vehicle Download PDFInfo
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- CN111712401B CN111712401B CN201980012224.5A CN201980012224A CN111712401B CN 111712401 B CN111712401 B CN 111712401B CN 201980012224 A CN201980012224 A CN 201980012224A CN 111712401 B CN111712401 B CN 111712401B
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- 238000004891 communication Methods 0.000 claims abstract description 28
- 230000001939 inductive effect Effects 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000007726 management method Methods 0.000 description 13
- 230000005611 electricity Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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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
- B60L53/60—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
- 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
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- 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
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- 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
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- 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
- Y02T90/12—Electric charging stations
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- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charging control device (5) for a wire-connected or inductive charging device (6, 4, 1, 100, 101) comprising a charging converter (1) for charging an electrical energy store (2) of a motor vehicle (3), comprising: a first charge control unit (12) for generating a first control signal for limiting at least one electrical parameter of the charging device (1, 4, 6) to a first maximum value, taking into account conditions or parameters of the interior of the motor vehicle; a second charge control unit (13) for generating or transmitting a second control signal for limiting at least one electrical parameter of the charging device (6, 4, 1) to a second maximum value, taking into account external conditions or signals independent of the state of the motor vehicle; and a third charge control unit (14) for determining a third maximum value as a control signal for the charge converter (1) by correlating the first maximum value and the second maximum value, wherein the first or the second charge control unit (12, 13) has a communication device (18) for receiving signals independent of the charging line (4) or is connected to such a communication device (18).
Description
Technical Field
The invention is in the field of electrical engineering and can be used with particular advantage in charging stations for the electricity of motor vehicles.
Background
Electric charging stations for motor vehicles have also been used, which are not only purely electric but also hybrid vehicles comprising a supplementary internal combustion engine in addition to an electric engine. The interface, the inductive charging device and the charging cable are known in different forms, wherein the control device for charging partially operates the data transmission by means of the charging cable. The charging of the vehicle-side battery is usually controlled and controlled with respect to current, voltage and power by means of a charge control device, wherein an important input value for the control is the state of charge of the vehicle-side battery. It is also known to take into account parameters of the network end of an energy supply network, which supplies energy for a charging process, when charging an energy store in a motor vehicle.
Disclosure of Invention
The object of the present invention is to take into account not only the conditions derived from the parameters of the vehicle, but also the conditions at the network end in the charging of the energy store of the motor vehicle. This should take place in a technically as simple manner as possible.
The object is achieved by means of the features of the invention by means of an advantageous charge control device. Furthermore, the invention relates to a possible implementation of such a charge control device. The invention further relates to a charge control system comprising such a charge control device and to a method for controlling a charge device.
The invention relates to a charging control device for a wire-connected or inductive charging device for charging an electrical energy store of a motor vehicle, comprising: a first charge control unit for generating a first control signal for limiting at least one electrical parameter of the charging device to a first maximum value, taking into account conditions or parameters of the interior of the motor vehicle; a second charge control unit for generating or transmitting a second control signal for limiting at least one electrical parameter of the charging device to a second maximum value, taking into account external conditions or signals independent of the state of the motor vehicle; and a third charge control unit for determining a third maximum value as a control signal for the inductive charging element or the charging converter by correlating the first maximum value and the second maximum value, wherein the first and/or the second and/or the third charge control unit has or is connected to a communication device for transmitting and/or receiving signals, which is not connected to a wire.
In one possible embodiment, the invention relates to a charging control device for a wire-connected charging device, comprising a charging converter for charging an electrical energy store of a motor vehicle, comprising: a first charge control unit for generating a first control signal for limiting at least one electrical parameter of the charging device to a first maximum value, taking into account conditions or parameters of the interior of the motor vehicle; a second charge control unit for generating or transmitting a second control signal for limiting at least one electrical parameter of the charging device to a second maximum value, taking into account external conditions or signals independent of the state of the motor vehicle; and a third charge control unit for determining a third maximum value as a manipulation signal for the charge converter by correlating the first maximum value and the second maximum value, wherein the first or the second charge control unit has a communication device for receiving signals independent of the charging conductor or is connected to such a communication device.
According to the invention, two charge control units are provided, wherein the first charge control unit is used to take into account the internal conditions or parameters of the motor vehicle, for example to maintain the upper limit values for the charge current and/or the charge power and the voltage. The following limit values for the parameters can also be predetermined. These values are typically managed within the vehicle by a battery management system. However, other parameters of the vehicle-side plant, for example additional consumers of electrical energy, can also be considered.
The second charging control unit may be used to take into account parameters and conditions of the energy grid, such as grid load spikes, time of preferred charging due to temporarily smaller energy costs, or other achievement of grid or energy production objectives.
In addition, the power consumption can also be adapted to other energy consumers or energy sources connected to the energy network. In this way, for example, the charging of different vehicles can be coordinated, which can also be further away from one another, for example.
The invention allows to collect the presets of the first and second charge control units by means of the third charge control unit. Since in many cases the first charging control unit is located in the motor vehicle and the second charging control unit is located in the power grid side in a stationary manner outside the motor vehicle or inside the motor vehicle and since in the case of inductive charging often no electrical lines are available between the power grid side part of the charging device and the vehicle, it is appropriate to provide at least one of the charging control units with a communication possibility independent of the charging lines/charging cables, so that the amount of information that has to be transmitted by the charging lines in addition to the energy transport is reduced or even the transmission of information by the charging cables can be completely avoided. For example, the third charging control unit can be arranged in a stationary manner on the grid side or in the motor vehicle, so that in embodiments in which the second and third charging control units are arranged in a stationary manner on the grid side, the possibility arises of transmitting information from the first charging control unit to the third charging control unit via the communication device. It is also possible to provide all the charging control units in a fixed position on the grid side, so that data can be transmitted from the motor vehicle to the first charging control unit via the communication device.
Most often, however, the first, second and third charging control units are provided in the motor vehicle itself, the energy store of which is charged, and the second charging control unit has a communication device for receiving signals independent of the charging conductors or is connected to the communication device.
In this way, the second charging control unit can obtain information about the parameters and the state of the energy supply network, which supplies the charging device with power, by means of a communication device that is independent of the charging conductor. The first charge control unit is connected to a plant and/or a sensor in the vehicle, for example a battery management system, and obtains information about the state of the motor vehicle for this purpose, from which information vehicle-side conditions or parameters for the charging are derived. In the best case, the transmission of information through the charging cable itself can thus be completely avoided.
A particular embodiment of the invention may provide that the communication device is suitable for receiving non-wired signals, in particular radio signals, ultrasound signals, optical signals or infrared signals. In principle, however, all types of information transfer by means of the communication device are conceivable.
In a further embodiment of the invention, the first charge control unit can be connected to at least one plant of the motor vehicle, in particular to an energy store, a sensor or a battery management device, by means of one or more lines. By means of the communication in the motor vehicle by means of an electrical line or bus system, the information can be transmitted to the first charging control unit particularly reliably and with little susceptibility to errors.
In this case, it can be provided, for example, that the first and/or second and/or third charge control unit is integrated into a battery management device of the motor vehicle.
Since battery management devices or battery management systems of motor vehicles generally have microprocessors or microcontrollers, the data processing device can additionally be used by corresponding data processing programs to function as a first and/or second and/or third charge control unit.
The number of data processing devices on board the motor vehicle can thereby be reduced.
It may also be provided that the first and/or second and/or third charging control unit is integrated into a charging device, in particular a converter, of the motor vehicle.
However, it is also conceivable for the first and/or second and/or third charging control unit to be integrated into a different processing device of the motor vehicle than the battery management device and the charging device.
As processing devices for motor vehicles, various autonomous control devices are conceivable, such as, for example, control systems for air conditioning, multimedia, engine control systems or other vehicle systems.
In principle, it can be provided here that the third charge control unit is designed to control the maximum current of the converter or the maximum power of the converter. A converter is understood here to mean a unit which converts, in a charging device, a variable or parameter of the electricity supplied by a supply device/supply network into a variable or parameter of the electricity required for charging an energy store. Such a converter may be configured, for example, as a semiconductor current converter based on semiconductor components, such as IGBTs, or in any other known converter structure. The converter typically comprises a rectifying device for the current in order to provide the direct voltage signal to the accumulator. The converter can be fixedly mounted on the on-board system of the vehicle; however, it is also conceivable to set a fixed-position, motor vehicle-independent converter on the grid side in the charging position.
The invention also relates to a charging control system for a wired or inductive charging device, comprising a charging converter for charging an electrical energy store of a motor vehicle, comprising a charging control device and a network data processing device for determining a control specification of an electrical supply network for the charging device, and comprising a transmitting device for the transmission of the control specification of the electrical supply network and/or of a control specification or parameter of the motor vehicle to a non-wired connection of a communication device.
In such a system, the charging control device according to the invention is optimally used and embedded in the infrastructure. The network data processing device may be arranged, for example, in a control room of the energy supply network or as a functional design of such a control room.
A special design of the charging control system can also be provided here in that the network data processing device is designed as a cloud device or is connected to a data cloud. In this way, it can be ensured, for example, that the information that should be transmitted from the network data processing device to the second charging control element is available in any case and everywhere.
The invention finally also relates to a method for controlling a wire-connected charging device, comprising a charging converter for charging an electrical energy store of a motor vehicle, in which method a control specification of an electrical supply network is determined by means of a network data processing device and is transmitted to a second charging control unit, and a first control signal is generated by means of the first charging control unit, taking into account the internal conditions or parameters of the motor vehicle, for limiting at least one electrical parameter of the charging device to a first maximum value, and a second control signal is generated or transmitted by means of the second charging control unit, taking into account the control specification of the electrical supply network, for limiting at least one electrical parameter of the charging device to a second maximum value, and a third maximum value is generated by means of the third charging control unit as a control signal for the charging converter by correlating the first maximum value with the second maximum value. The method can be implemented in a distributed manner partly in a stationary energy supply network and partly on the on-board system of the motor vehicle to be charged.
Drawings
The invention is illustrated and subsequently explained by means of embodiments in the figures of the drawings. Here:
fig. 1 shows in principle a problem in a vehicle whose battery is charged by a charging cable;
fig. 2 schematically shows elements of a charge control device;
Fig. 3 shows a charge control device comprising a regulating device;
fig. 4 shows a charge control device which is partially integrated into a battery management device;
Fig. 5 shows a charge control device which is integrated together with a regulating device into a plant of a vehicle, for example a battery management system;
fig. 6 shows a charging device and an induction charging system comprising a vehicle
Fig. 7 shows a charge control unit for the case of an inductive charging device.
Detailed Description
Fig. 1 schematically shows a motor vehicle 3 which is parked next to a charging pillar 6 and which is connected to the charging pillar by means of a charging cable 4. The charging post 6 is supplied with electrical energy, typically an alternating voltage, via an energy supply network 7. The electrical energy supply network 7 is connected to a plurality of distributed data processing devices, which together form a cloud 8. The transmitting device 19 for the data of the energy supply network and its elements is connected to the cloud and/or directly to the elements of the energy supply network 7, for example the charging post 6.
In the vehicle, the charging cable 4 is connected to the vehicle power grid by means of a charging cable plug and a vehicle-side charging cable socket, so that electrical energy is transported to the converter 1. The converter 1 is a high-voltage device, for example in the form of a current transformer, which converts the voltage and frequency supplied via the charging post 6 into a direct voltage of a suitable voltage magnitude and supplies a suitable charging current for the energy store/accumulator 2. The charging process is controlled or regulated by means of the charging control device 5, which is described in more detail in addition.
The energy supply network 7 has one or more energy sources and, in addition to the charging post 6, further energy consumers which are distributed over the site. Information about the available electrical energy and the distribution of its locations, i.e. the load distribution of the different energy sources and energy consumers, is provided, for example, in a grid control room or transmitted by transmitters distributed over the different locations to the cloud 8, where the data can be analyzed and predictions obtained. Using the available data, a plan can be determined which makes it possible to render the charging of the energy store particularly suitable at a particular time or to obtain a determined current intensity or power value for the charging process or a determined time profile for these variables. The control of the charging converter is therefore suitable with constant or time-variable values for the current and/or voltage and/or the electrical power. The control device, which can also be configured as a control device in the case of an additional control circuit, can be realized by a device on board the vehicle 3.
The charge control device is described in detail in connection with fig. 2 to 5 and 7.
Fig. 2 shows a charging converter 1 which is connected on one side to a charging cable 4 by means of a plug connection 9 and on its output side 10 to a battery 2 of a vehicle. The connection of the charging converter 1 to a vehicle-side component 100 of an inductive energy transmission system, for example in the form of a coil, is shown as an alternative dashed line. This alternative is also present in the embodiments shown in fig. 3, 4 and 5, respectively.
The maximum permitted value for the electric power and/or current is led from the third charge control unit 14 to the charge converter 1 via the first signal line 11. The third charge control unit 14 receives data from the first charge control unit 12 and the second charge control unit 13. The first charge control unit 12 is connected to the battery 2 of the motor vehicle or to sensors which provide information/data about the battery 2. The first charge control unit 12 may also be integrated into or connected to a battery management system. The first charge control unit 12 generates or transmits data for specifying a maximum charge current or a maximum charge power, which is suitable, advantageous or permissible for the battery 2. The second charging control unit 13 directs the planning or data of the energy supply network 7 to the third charging control unit 14. Such data have, for example, the maximum allowable or usable electric power or the maximum current. The data may also contain a current or power profile with respect to time, so that for a certain time window, the maximum permissible current or the maximum permissible electrical power is contained in the data for each time instant, respectively.
The third charge control unit 14 correlates the data of the first and second charge control units 12, 13 in that it determines, for example, for each time instant or independently of time, a maximum current value or maximum electrical power, which is transmitted by the first charge control unit as well as by the second charge control unit 12, 13 as permitted or appropriate. The determined time-dependent or time-independent value for the maximum current and/or maximum power allowed is fed by a third charge control unit to a charge converter 1 which regulates the charge current for the battery 2 in accordance with the specification/data.
The second charging control unit 13 obtains the specification data of the energy supply network via the receiving device/communication device 18, for example by means of a radio interface, which connects the communication device 18, for example, with the cloud 8. However, the communication device 18 can also be connected by means of a radio interface to a transmitter 19 on the charging post 6.
Fig. 3 shows a configuration which is similar to the configuration shown in fig. 2, wherein the control circuit 16 and the control device 15 are integrated into the control device of the converter 1. The third charge control unit 14 thus specifies a maximum value for the current and/or the voltage, which is given to the regulating device 15. The regulating device 15 may reserve the maximum value for the converter 1 or another value which is reserved by the charge control unit 14 and which lies below the maximum value. The converter 1 regulates the corresponding current intensity or electric power. The sensor 17 in the charging line measures the current or power and directs the measured value to the regulating device 15 via the regulating circuit 16. The regulating device compares a predetermined value of the third charge control unit 14 with a specifically reached and measured actual value and corresponds to readjusting the converter 1. The regulating device 15 can be integrated into the third charge control unit 14 in this case, and the two devices can also be integrated together into existing systems of the vehicle, for example a battery management system, but can also be integrated together into any other system on board the vehicle with a microcontroller or similar device.
Fig. 4 schematically shows the integration of the first charge control unit 12 and the third charge control unit 14 into a plant 20, which may be, for example, a battery management system, but may also be another plant of the vehicle. The second charge control unit 13 is not integrated together in the illustrated example into the plant 20. However, it is also conceivable to integrate the charge control unit 13 together with the two other charge control units 12 and 14 into the vehicle plant.
In fig. 5, in an otherwise identical construction, the integration of the regulating device 15 into the plant 20 is included. The regulating device 15 obtains a predetermined value as a target variable of the third charge control unit 14 and compares the target variable with the measured variable/regulated polishing provided by the sensor 17. In this example, the second charging control unit 13 is also not integrated together into the plant 20, however, an integration of the unit 13 into the plant 20 is also conceivable here.
The maximum value predetermined by the sensor or device in the vehicle can likewise be corrected or controlled again during the charging process of the energy store, as can the data that are fed to the second charging control unit 13 by means of the communication device 18. The target values for the maximum current and the highest power that should be provided by the converter 1 can be continuously changed and corrected. The optimized value for the current and/or the power can also be set on the converter 1, wherein it is then checked continuously whether the optimized value lies below a predetermined maximum value.
Fig. 6 schematically shows a motor vehicle 3 which is equipped with an electrical energy store and which is coupled to an infrastructure-side or grid-side part 101 of an inductive charging device 100, 101. In the charging station, stationary induction elements, for example in the form of electrical coils, which can be supplied with an alternating current and can generate a magnetic alternating field, are provided for this purpose in the region of the travelable surfaces, partially or completely in or on the ground/traffic lane surface. The vehicle-side part 100 of the inductive charging device, for example in the form of an identical coil, is coupled to the alternating field via an air gap, so that energy can be transmitted via the gap, which is available on the vehicle side in the form of an alternating current and an alternating voltage and is conducted there to the charging converter 1. The charging converter generates a direct voltage signal on its output side 10, which can be controlled and is used to charge the energy store 2 of the vehicle. The charge control device 5 for controlling the charge converter may be installed on the vehicle side and has first, second and third charge control units 12, 13, 14.
The charging control unit 5' can also be arranged in a fixed position on the grid side and control the charging converter and/or the grid-side part 101 of the inductive charging device 100, 101. For this purpose, the charging control device 5' can be connected for communication with an inductive charging device by way of a wired or non-wired connection. The charging control device 5' can also be connected to a network-side communication center or control room by means of a wire or radio connection in order to receive network-side control parameters. The charging control device 5' may communicate with the charging converter 1 via a connection other than a wire connection, for example a radio connection.
Fig. 7 shows an inductive charging device, whose vehicle-side part 100 supplies the charging converter 1. The third charge control unit 14 is connected to the charge converter 1 and controls the charge converter by means of a control connection 11 which can be connected by wire or not. The third charging converter may be arranged in the vehicle or may be arranged outside the vehicle in a stationary manner.
The first charge control unit 12 may be provided in a vehicle and connected to the third charge control unit 14 in a wire-connected manner when the third charge control unit is provided in the vehicle.
If the third charge control unit 14 is arranged stationary on the power supply side, it is in contact with the first charge control unit 12 by means of a radio connection.
The second charging control unit 13 can be in contact with the third charging control unit 14 in a wire-connected or non-wire-connected manner when it is arranged in a stationary manner on the grid side, if the third charging control unit is likewise arranged in a stationary manner on the grid side.
If the third charge control unit 14 is provided in the vehicle, the second charge control unit communicates with the third charge control unit through a radio connection.
If the second charge control unit 13 is arranged in the vehicle, the second charge control unit is connected to the third charge control unit 14 by means of a radio connection or a wire connection, as long as the third charge control unit is also arranged in the vehicle.
If the second charging control unit 13 is in the vehicle and the third charging control unit 14 is fixedly arranged on the grid side, the second charging control unit 13 communicates with the third charging control unit via a radio connection.
For example, it is also possible to provide that the stationary second charging control unit is connected to a third charging control unit 14 provided in the vehicle by means of an electrical data line only for information transmission.
In one embodiment, it can be provided that the charging parameters that are allowed on the vehicle side are determined in the vehicle and are transmitted by a first charging control unit integrated into the battery charging management or charging regulator to a receiving device of the stationary part of the inductive charging device by means of a radio connection. The receiving device transmits data to a stationary third charging control unit, which controls a regulating element for the inductive charging. The third charging control unit may furthermore be connected to a second charging control unit, which is connected to a line or which receives or determines via radio a parameter on the grid side, which parameter defines the charging power.
By means of the invention, the charging of the energy store of the vehicle on the charging post by means of the charging cable can be optimized in a simple and cost-effective manner.
Claims (15)
1. Charging control device (5, 5') for a wire-connected or inductive charging device for charging an electrical energy store (2) of a motor vehicle (3), comprising:
A first charge control unit (12) for generating a first control signal for limiting at least one electrical parameter of a charging device of the motor vehicle to a first maximum value, taking into account conditions or parameters of the interior of the motor vehicle,
A second charge control unit (13) for generating or transmitting a second control signal for limiting at least one electrical parameter of a charging device of the motor vehicle to a second maximum value, taking into account external parameters and conditions of an electrical supply network independent of the state of the motor vehicle, and
A third charge control unit (14) for determining a third maximum value, which is assigned to the regulating device (15), as a control signal for the inductive charging element or charging converter (1) by correlating the first maximum value and the second maximum value, wherein the regulating circuit (16) and the regulating device (15) are integrated into the charge control device of the charging converter (1), wherein the third charge control unit (14) specifies a third maximum value of the current and/or the voltage, wherein the regulating device (15) specifies the third maximum value, which the regulating device (15) specifies for the charging converter (1) or a further value which is specified by the third charge control unit (14) and which lies below the third maximum value, wherein the charging converter (1) of the motor vehicle regulates the corresponding current intensity or the electric power, wherein a sensor (17) in a charging line of the charge control device measures the current or the electric power and directs the measured value to the regulating device (15) via the regulating circuit (16), and wherein the regulating device compares the predetermined value of the third charge control unit (14) with the specific and measured actual value and corresponds to the readjusted charging converter (1),
Wherein the first charging control unit (12) and/or the second charging control unit (13) and/or the third charging control unit (14) has a communication device (18) for transmitting and/or receiving signals, which is not connected by wires, or is connected to such a communication device (18), by means of which the presetting of the first charging control unit and the second charging control unit is integrated.
2. Charge control device according to claim 1 for a wire-connected charging device, said charging device comprising a charge converter (1) for charging an electrical energy store (2) of a motor vehicle (3), said charge control device comprising:
A first charge control unit (12) for generating a first control signal for limiting at least one electrical parameter of the charging device to a first maximum value, taking into account conditions or parameters of the interior of the motor vehicle,
A second charge control unit (13) for generating or transmitting a second control signal for limiting at least one electrical parameter of the charging device to a second maximum sum, taking into account parameters and conditions of an external electrical supply network independent of the state of the motor vehicle
A third charge control unit (14) for determining a third maximum value as a control signal for the charge converter (1) by correlating the first maximum value and the second maximum value,
Wherein the first charging control unit (12) or the second charging control unit (13) has a communication device (18) for receiving signals independent of the charging conductor (4) or is connected to such a communication device (18).
3. The charge control device according to claim 1, characterized in that the first charge control unit (12), the second charge control unit (13) and the third charge control unit (14) are arranged in a motor vehicle (3), an electric accumulator (2) of which is charged, and
The second charging control unit (13) has a communication device (18) for receiving signals independent of the charging conductor (4) or is connected to such a communication device.
4. A charge control device according to claim 3, characterized in that the communication device (18) is adapted to receive radio signals, ultrasonic signals, optical signals or infrared signals.
5. Charging control device according to one of claims 1 to 4, characterized in that the first charging control unit (12) is connected to at least one plant of the motor vehicle (3) by means of one or more wires.
6. Charge control device according to one of claims 1 to 4, characterized in that the first charge control unit (12) and/or the second charge control unit (13) and/or the third charge control unit (14) are integrated into a battery management device (19) of the motor vehicle.
7. Charging control device according to one of claims 1 to 4, characterized in that the first charging control unit (12) and/or the second charging control unit (13) and/or the third charging control unit (14) are integrated into a charging device of a motor vehicle.
8. Charge control device according to one of claims 1 to 4, characterized in that the first charge control unit (12) and/or the second charge control unit (13) and/or the third charge control unit (14) are integrated into a different processing device of the motor vehicle than the battery management device (19) and the charging device.
9. Charging control device according to one of claims 1 to 4, characterized in that the third charging control unit (14) is designed for controlling the maximum current of the charging converter.
10. Charge control device according to one of claims 1 to 4, characterized in that the third charge control unit (14) is designed for controlling the highest power of the charge converter.
11. The charge control device according to claim 5, characterized in that the first charge control unit (12) is connected with the electric accumulator, the sensor or the battery management device by means of one or more wires.
12. Charging control device according to claim 7, characterized in that the first charging control unit (12) and/or the second charging control unit (13) and/or the third charging control unit (14) are integrated into the charging converter (1) of the motor vehicle.
13. Charging control system for a wired or inductive charging device comprising a charging converter (1) for charging an electrical energy store (2) of a motor vehicle (3), comprising a charging control device according to one of claims 1 to 12 and a network data processing device for determining a control specification for an electrical supply network (7) of the charging device, and comprising a transmitting device for transmission of the control specification of the electrical supply network and/or a control specification or parameter of the motor vehicle to a non-wired connection of a communication device (18).
14. The charge control system according to claim 13, wherein the network data processing device is configured as a cloud device or is connected to a data cloud.
15. Method for controlling a wire-connected charging device with a charging control device according to one of claims 1 to 12, the charging device comprising a charging converter (1) for charging an electrical energy store (2) of a motor vehicle (3), in which method a control specification of an electrical supply network (7) is determined by means of a network data processing device and is transmitted to a second charging control unit (13), and wherein the control specification is transmitted to a second charging control unit (13) in a network data processing device
Generating, by means of a first charge control unit (12), a first control signal for limiting at least one electrical parameter of the charging device to a first maximum value, taking into account conditions or parameters of the interior of the motor vehicle, and
Generating or transmitting a second control signal by means of a second charging control unit (13) taking into account the control regulations of the electrical supply network, said second control signal being used to limit at least one electrical parameter of the charging device to a second maximum value, and
A third maximum value is generated by means of a third charge control unit (14) by correlating the first maximum value with the second maximum value as a control signal for the charge converter (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018201934.7 | 2018-02-07 | ||
| DE102018201934.7A DE102018201934A1 (en) | 2018-02-07 | 2018-02-07 | Charging control device for motor vehicles |
| PCT/EP2019/052632 WO2019154760A1 (en) | 2018-02-07 | 2019-02-04 | Charge control device for motor vehicles |
Publications (2)
| Publication Number | Publication Date |
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| CN111712401A CN111712401A (en) | 2020-09-25 |
| CN111712401B true CN111712401B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980012224.5A Active CN111712401B (en) | 2018-02-07 | 2019-02-04 | Charge control device for motor vehicle |
Country Status (3)
| Country | Link |
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| CN (1) | CN111712401B (en) |
| DE (1) | DE102018201934A1 (en) |
| WO (1) | WO2019154760A1 (en) |
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| CN110739713B (en) * | 2019-09-27 | 2021-03-05 | 福建星云电子股份有限公司 | Intelligent energy storage and charging integrated device and charging and discharging control method thereof |
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Also Published As
| Publication number | Publication date |
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| DE102018201934A1 (en) | 2019-08-08 |
| WO2019154760A1 (en) | 2019-08-15 |
| CN111712401A (en) | 2020-09-25 |
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