CN107825970B - Electric automobile road section type mobile wireless charging station - Google Patents
Electric automobile road section type mobile wireless charging station Download PDFInfo
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- CN107825970B CN107825970B CN201710876513.2A CN201710876513A CN107825970B CN 107825970 B CN107825970 B CN 107825970B CN 201710876513 A CN201710876513 A CN 201710876513A CN 107825970 B CN107825970 B CN 107825970B
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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
- B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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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
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明涉及一种电动汽车路段式移动无线充电站，包括一段充电路段，充电路段地下埋设有间隔设置的至少两个能量发射线圈，能量发射线圈连接有地面供电电路，地面供电电路连接一个地面控制单元；至少两个能量发射线圈之间设置有车体检测装置，地面控制单元采样连接所述车体检测装置。本发明通过在两个能量发射线圈之间设置一个车体检测装置，当电动汽车行驶至车体检测装置上面的路面时，地面控制单元控制断开沿车辆行驶方向后一个能量发射线圈与地面供电电路之间的连接，有效避免了充电线圈空载的现象，提高了充电效率。
The invention relates to a road-section mobile wireless charging station for electric vehicles. unit; a vehicle body detection device is arranged between at least two energy transmitting coils, and the ground control unit is sampled and connected to the vehicle body detection device. In the present invention, a vehicle body detection device is arranged between the two energy emitting coils. When the electric vehicle travels to the road above the vehicle body detection device, the ground control unit controls to disconnect the next energy emitting coil along the vehicle's running direction from the ground power supply. The connection between the circuits effectively avoids the phenomenon that the charging coil is not loaded and improves the charging efficiency.
Description
Technical Field
The invention relates to a road section type mobile wireless charging station for an electric automobile, and belongs to the technical field of wireless charging.
Background
In recent years, in the process of accelerating urbanization, the quantity of automobiles kept by people is continuously increased, so that the air pollution is continuously increased, the environmental problem is increasingly highlighted, the attention of people is drawn, and green travel is promoted. The new energy automobile can reduce the pollution to the environment, save energy, reduce consumption and reduce the dependence on fossil fuel to a certain extent. Especially, most of shared automobiles launched in a part of cities recently are new energy electric automobiles, and great convenience is brought to travelers with different requirements. However, the same problems are faced, and how to enable the electric vehicle to be charged safely and conveniently is a problem to be solved urgently.
The charging mode of the traditional electric automobile is mainly wired charging, and has a plurality of disadvantages. Firstly, parking must be carried out firstly, charging is carried out on a fixedly constructed charging pile, and connecting equipment needs to be plugged and pulled out every time of charging, a connector is large and heavy, the operation is extremely inconvenient, and the connecting equipment can have the problems of abrasion or poor contact after being plugged and pulled out for many times, so that high-voltage hidden danger is brought; secondly, more public areas are occupied when the charging pile is built, and parking spaces need to be set.
Chinese patent application No. 201710626440.1 discloses a mobile wireless charging system for vehicles, which is configured to wirelessly charge vehicles by burying an energy transmitting coil under the ground of a charging section and providing an energy receiving coil matched with the energy transmitting coil on an electric vehicle. However, in the moving process of the energy receiving coil of the electric automobile, the charging efficiency of the energy transmitting coil is lower and lower, and when the vehicle runs out of the charging road section, the energy transmitting coil can run in no load, which causes energy waste.
Disclosure of Invention
The invention aims to provide a road section type mobile wireless charging station for an electric automobile, which is used for solving the problem of energy waste caused by low charging efficiency of a charging line in the wireless charging process of the electric automobile.
In order to solve the technical problem, the invention provides a road section type mobile wireless charging station for an electric vehicle, which comprises a charging road section, wherein at least two energy transmitting coils which are arranged at intervals are buried underground in the charging road section, the energy transmitting coils are connected with a ground power supply circuit, and the ground power supply circuit is connected with a ground control unit; and a vehicle body detection device is arranged between the at least two energy transmitting coils, and the ground control unit is connected with the vehicle body detection device in a sampling manner.
Furthermore, every N energy transmitting coils are provided with a vehicle body detection device, and N is more than or equal to 1.
Furthermore, a vehicle body detection device is also arranged in front of the charging section along the driving direction of the vehicle.
Further, the vehicle body detection device is a magnetic sensor.
The invention also provides an electric automobile road section type mobile wireless charging station, which comprises at least two charging road sections, wherein an energy transmitting coil is buried underground in each charging road section, the energy transmitting coil is connected with a ground power supply circuit, and the ground power supply circuit is connected with a ground control unit; and a vehicle body detection device is arranged between at least two sections of charging sections, and the ground control unit is connected with the vehicle body detection device in a sampling manner.
Furthermore, every N charging sections are provided with a vehicle body detection device, and N is more than or equal to 1.
Furthermore, a vehicle body detection device is also arranged in front of the foremost charging section along the driving direction of the vehicle.
The invention also provides an electric automobile road section type mobile wireless charging station, which comprises at least two sections of charging road sections, wherein at least two energy transmitting coils which are arranged at intervals are buried underground in each section of charging road section, the energy transmitting coils are connected with a ground power supply circuit, and the ground power supply circuit is connected with a ground control unit; and a vehicle body detection device is arranged between at least two sections of charging sections and/or between at least two energy transmitting coils in each section of charging section, and the ground control unit is connected with the vehicle body detection device in a sampling manner.
Furthermore, every N charging sections and/or every N energy transmitting coils in every charging section are provided with a vehicle body detection device, and N is more than or equal to 1.
Furthermore, a vehicle body detection device is also arranged in front of the foremost charging section along the driving direction of the vehicle.
The invention has the beneficial effects that:
when the wireless charging station comprises a charging section, at least two energy transmitting coils are buried underground in the charging section, the vehicle body detection device is arranged between the at least two energy transmitting coils, when the electric vehicle runs to a road surface above the vehicle body detection device, the ground control unit controls the disconnection of the connection between the energy transmitting coil behind the vehicle running direction and the ground power supply circuit, the no-load phenomenon of the charging coil is effectively avoided, and the charging efficiency is improved.
When the electric vehicle runs to the road surface above the vehicle body detection device, the ground control unit controls the disconnection of the energy transmitting coil in the next charging road section along the vehicle running direction and the ground power supply circuit, so that the no-load phenomenon of the charging coil is effectively avoided, and the charging efficiency is improved.
When the electric automobile runs to the road surface above the vehicle body detection device, the ground control unit controls the disconnection of the connection between the energy transmitting coil and the ground power supply circuit behind the vehicle body detection device along the vehicle running direction, so that the no-load phenomenon of the charging coil is effectively avoided, and the charging efficiency is improved.
Drawings
FIG. 1 is a schematic layout of a charging section, an energy transmission coil and a vehicle body detection device in embodiment 1;
FIG. 2 is a schematic structural diagram of a road-type mobile wireless charging system for an electric vehicle according to the present invention;
FIG. 3 is a block diagram of the components of the wireless charging station of the present invention;
FIG. 4 is a block diagram of an electric vehicle according to the present invention;
FIG. 5 is a schematic layout of a charging section, an energy transmission coil and a vehicle body detection device in embodiment 2;
fig. 6 is a schematic layout diagram of the charging section, the energy transmission coil, and the vehicle body detection device in embodiment 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Charging station embodiment 1:
the invention relates to an electric automobile road section type mobile wireless charging station, which comprises a charging road section, wherein the charging road section is provided with a transformer substation wireless communication module, and the transformer substation wireless communication module is connected with a ground control unit. 5 energy transmitting coils which are arranged at intervals are buried underground in the charging section, all the energy transmitting coils are connected with a ground power supply circuit, and the ground power supply circuit supplies power to all the energy transmitting coils. Of course, as another embodiment, the energy transmitting coil buried underground in the charging section may be set as necessary. The ground control unit is connected with the ground power supply circuit through the change-over switch in a control mode, and whether each energy transmitting coil transmits energy or not is controlled by controlling the on-off condition of the ground power supply circuit. The transformer substation wireless communication module comprises transformer substation wireless communication units which correspond to the energy transmitting coils one to one.
Because the energy transmitting coils of the charging road section are arranged at intervals, in the moving process of the electric automobile, in order to avoid energy waste caused by the empty load of the energy transmitting coils, the relative position of the energy transmitting coils in the driving process of the automobile needs to be determined, the energy transmitting coils in the front are timely turned on, and the energy transmitting coils in the rear are turned off. Therefore, a vehicle body detection device (road surface detection mechanism) for detecting whether the vehicle passes through the road surface above the vehicle body detection device is arranged between any two energy transmitting coils and in front of the charging section, and the ground control unit is connected with the vehicle body detection device in a sampling mode. As shown in fig. 1, the vehicle travels in the direction indicated by the arrow in the figure, the solid line in the figure indicates the charging section, the rectangle in the figure indicates the energy transmitting coil, and the circle in the figure indicates the vehicle body detection device. Of course, as another embodiment, the vehicle body detection device between different energy transmitting coils may be set as necessary. For example, one vehicle body detection device may be provided every third energy transmitting coil. In fig. 1, when the vehicle leaves the road surface above the energy transmitting coil 1, in order to prevent the energy transmitting coil 1 from continuing to run with electricity and no load, the ground control unit controls to disconnect the line of the energy transmitting coil 1 in the ground power supply circuit and the energy transmitting coil is powered off when the vehicle body detection device 3 between the energy transmitting coil 1 and the previous energy transmitting coil 2 detects that the vehicle runs to the road surface above the energy transmitting coil along the running direction of the vehicle.
The electric automobile comprises a vehicle-mounted power battery, a vehicle-mounted wireless communication module, a vehicle body detection matching device, an energy receiving coil and a charging circuit connected with the energy receiving coil, wherein the charging circuit is electrically connected with the vehicle-mounted power battery. The vehicle-mounted wireless communication module is matched with a transformer substation wireless communication module arranged in a wireless charging station and used for information interaction between a vehicle and the charging station; the vehicle body detection matching device is matched with a vehicle body detection device arranged on the wireless charging station and used for detecting whether a vehicle passes through a road surface above the vehicle body detection device; the energy receiving coil is matched with an energy transmitting coil arranged on a wireless charging station to form a coil coupling mechanism for wirelessly charging a power battery of a vehicle.
The electric vehicle road section type mobile wireless charging station and the electric vehicle jointly form an electric vehicle road section type mobile wireless charging system, as shown in fig. 2, the wireless charging system can be divided into 5 layers, the first layer is a vehicle aspect, and a receiving end of electric energy comprises an energy receiving coil (receiving mechanism), a charging circuit and a vehicle-mounted wireless communication module; the second layer is a ground transmitting end and comprises an energy transmitting coil (transmitting mechanism), a transformer substation wireless communication module, a vehicle body detection device and a change-over switch control and ground control unit; the third layer is a transmitting end power supply high-frequency excitation device (an inversion unit) which inputs high-frequency high power for an energy transmitting coil; the fourth layer is a power distribution/control unit, namely a rectification module, and is used for rectifying the alternating current output by the transformer substation into direct current; and the fifth layer is a transformer substation for providing a three-phase alternating current power supply, and the transformer substation can directly take power from a power grid or adopt photovoltaic power supply, which is not described in detail herein.
Specifically, as shown in fig. 3, the ground power supply circuit includes a three-phase ac power supply, a rectification module, and an inversion module, which are connected in sequence. The voltage grade of the three-phase alternating-current power supply is AC380V, new energy sources such as a power grid and photovoltaic are adopted for supplying power simultaneously, and an energy storage battery with a certain capacity is configured. When the number of vehicles is small, the charging requirement of the electric automobile on the whole road section can be met even by completely charging the power battery of the vehicle through photovoltaic power generation. The rectifying modules are formed by connecting 6-8 15kW rectifying units (AC/DC modules) in parallel, wherein the two rectifying units are used for standby. The rectification module rectifies the input alternating current to change the alternating current to output DC 400V. The output end of the rectification module is connected with an inversion module formed by connecting 7 30kVA inversion units (high-frequency excitation devices) in parallel. Each high-frequency excitation device consists of a power board, a control board, a drive board, 2 auxiliary power boards and a display board, and after a series of processing, the high-frequency high power with the final output frequency of 20kHz provides input for the energy transmitting coil. In order to improve the charging efficiency, each energy transmitting coil is correspondingly connected with a group of ground transmitting coils.
The charging monitoring device is connected with the rectifying unit, the inverting unit, the ground control unit and the transformer substation wireless communication module through CAN communication, displays state information and real-time data of each module, and performs startup and shutdown operation and parameter issuing according to requirements. The charging monitoring device is also connected with a wireless communication module of a charging section through RS485, the wireless communication module of the charging section can be in wireless communication with the vehicle-mounted wireless communication module, and the charging monitoring device displays information such as vehicle positions, battery information, charging time and efficiency sent by the wireless communication module of the charging section and controls charging according to charging requirements.
In the embodiment, the charging section is laid to be 100m, the 100m power supply section comprises 5 energy transmitting coils buried under the ground, a segmented I-type guide rail type structure is adopted, a single coil magnetic core and coil structure is adopted, the transmitting power is 20kW, the resonant frequency is 85kHz, the length is 20m, and the width is 10 cm. The energy receiving coil is arranged on a vehicle-mounted charger below the chassis of the electric automobile, and strict requirements are imposed on the shape and the structure of the energy receiving coil in order to keep the requirements on the shape, the structural strength and the like of the automobile. A double-phase four-coil structure is adopted to manufacture a rectangular disk coil, and the receiving power is 20 kW. During actual installation, the rectifying unit, the inverting unit, the charging monitoring device and the wireless communication module of the charging section are all arranged in a cabinet body, and the cabinet body is arranged in a power supply section of 100 m.
As shown in fig. 4, the charging circuit connected to the energy receiving coil includes an auxiliary power supply, a rectifying and filtering circuit, an overvoltage discharging circuit, a boost chopper, an output soft start circuit, a control circuit, and the like, and the vehicle-mounted wireless communication module is specifically a ZigBee sensor. The charging circuit is matched with the vehicle-mounted wireless communication module, has a constant-current voltage-limiting charging function, and can realize protective charging according to battery characteristics and states and BMS instructions; the CAN communication function is provided, and the communication with the BMS CAN be realized; the wireless charging system has a wireless communication function, can be communicated with a charging monitoring device, and realizes vehicle identity confirmation, transaction application confirmation, starting/stopping charging and the like.
In this embodiment, the vehicle body detection device provided in the wireless charging station is a high-sensitivity magnetic sensor, and the corresponding vehicle body detection matching device provided in the vehicle is specifically a magnetic spike (permanent magnet) provided on the chassis of the electric vehicle. Considering that the cost of the magnetic track nails is lower, and on the premise that the number of the charging vehicles is less, the installation number of the magnetic sensors is reduced, so that the engineering cost can be effectively reduced, in order to adapt to the external left-right deviation of the vehicles, 3 magnetic track nails can be transversely arranged on the chassis of the charging vehicle, namely, all the magnetic track nails are transversely arranged on the chassis of the vehicle along the left-right direction of the vehicle at intervals, so that the purpose of switching the energy transmitting coil is achieved.
The charging process of the electric automobile road segment type mobile wireless charging system is as follows:
when the vehicle runs to a power supply road section, the requirement on the speed is not higher than 40km/h, the wireless local area network formed by each transformer substation wireless communication unit buried under the ground and the vehicle-mounted wireless communication module on the vehicle detects the vehicle, obtains vehicle information, tracks and positions the track of the running vehicle, and determines whether the power battery on the vehicle needs to be charged. If charging is needed, the charging vehicle is reminded to adjust the vehicle speed and the relative position of the charging vehicle and the charging track, a charging request is sent, and a charging control switch on the vehicle is started.
As shown in fig. 1, the direction marked by an arrow is the vehicle traveling direction, when a vehicle approaches an energy transmitting coil 1, a wireless communication unit of a substation corresponding to the energy transmitting coil 1 detects information of the traveling vehicle and sends the detected information to a ground control unit, the ground control unit closes a switch corresponding to the energy transmitting coil 1 by controlling, a ground power supply circuit supplies power to the energy transmitting coil 1, the resonant current provided by the energy transmitting coil 1 is sent to an energy receiving coil on the vehicle, and the energy receiving coil converts coil energy into stable direct current with adjustable voltage and current through a charging circuit (power unit) of a vehicle-mounted charger to charge a vehicle-mounted power battery.
When the vehicle runs to the road surface above the magnetic sensor 3, the magnetic sensor 3 detects a magnetic spike, which indicates that the vehicle has run out of the charging road surface corresponding to the energy emitting coil 1, the magnetic sensor 3 sends detection information to the ground control unit, the ground control unit turns off the switch corresponding to the energy emitting coil 1 by controlling, and the energy emitting coil 1 is not electrified. In the process that the vehicle drives towards the energy transmitting coil 2, the wireless communication unit of the transformer substation corresponding to the energy transmitting coil 2 detects information of the running vehicle and sends the detected information to the ground control unit, the ground control unit controls the switch-on of the change-over switch corresponding to the energy transmitting coil 2, the ground power supply circuit supplies power to the energy transmitting coil 2, and the energy transmitting coil 2 charges a power battery of the running vehicle. According to the control mode, the charging process of the running vehicle in the charging section is gradually realized.
Charging station embodiment 2:
different from the charging station embodiment 1, the electric vehicle road section type mobile wireless charging station comprises 5 charging road sections, an energy transmitting coil is buried under each charging road section, the schematic layout of the charging road sections and the energy transmitting coils in the charging road sections is shown in fig. 5, the solid line in fig. 5 represents the charging road sections, the rectangle in the drawing represents the energy transmitting coils, and the circle in the drawing represents the vehicle body detection device. In order to meet the vehicle charging requirements, the number of charging sections can be adaptively arranged as required. In order to avoid the energy transmitting coil from being unloaded, a vehicle body detection device is arranged between every two sections of charging sections and in front of the foremost charging section. Of course, as another embodiment, the vehicle body detection device between different charging sections may be set as necessary. For example, it is possible to provide only one vehicle body detection device between two charging sections; one vehicle body detection device may be provided every two charging sections.
Since the charging process of the vehicle in the charging station is the same as that of embodiment 1, only the number of charging sections and the number of energy transmitting coils in each charging section are changed, and the arrangement position of the corresponding vehicle body detection device is changed accordingly, the charging station will not be described in detail.
Charging station embodiment 3:
different from the charging station embodiment 2, 5 energy emitting coils are buried underground in each charging section, and at this time, the schematic layout of the charging section and the energy emitting coils in the charging line is shown in fig. 6 (only two charging sections are shown). The solid line in fig. 6 indicates the charging section, the rectangle in the figure indicates the energy transmitting coil, and the circle in the figure indicates the vehicle body detection device. In order to meet the vehicle charging requirements, the number of energy transmitting coils in each charging section can be adaptively arranged according to requirements. In order to avoid the no-load of the energy transmitting coils, a vehicle body detection device is arranged between every two sections of charging sections and between every two energy transmitting coils in different charging sections, and a vehicle body detection device is also arranged in front of the foremost charging section. Of course, as another embodiment, the vehicle body detection device may be provided between the charging sections and between the energy transmitting coils in different charging sections as needed. For example, the vehicle body detection device may be provided only between two charging sections, or the vehicle body detection device may be provided only between two energy transmitting coils in different charging sections; alternatively, a vehicle body detection device may be provided every third charging path or every third energy transmitting coil in different charging paths.
Since the charging process of the vehicle in the charging station is the same as that of embodiment 2, only the number of the energy transmitting coils in each charging section is changed, and the arrangement position of the corresponding vehicle body detection device is correspondingly changed, the charging station will not be described in detail.
The road section type mobile wireless charging system for the electric automobile can realize online power supplement on an operation line of the electric automobile, is automatic in the whole process without manual intervention, and solves the problems that the electric automobile needs to be stopped firstly during charging, a charging cable on a charger is connected to a charging interface of the electric automobile, the operation is complicated, the connection of a charging device is easy to wear, the mechanical interface is not uniform, the potential hazard of electric shock is caused by hot plugging and unplugging, and the like; the centralized degree of charging of the electric automobile can be dispersed, the service life of charging equipment is prolonged, the requirement on the driving mileage of the vehicle after each charging is greatly shortened, and the capacity of a battery pack configured on the vehicle can be greatly reduced; the wireless charging equipment adopts a full-buried charging mode, so that the risk of theft prevention and damage prevention of the equipment is reduced; the existing road section, the open parking lot and even the temporary vehicle area on the roadside can be directly utilized for on-site transformation without specially newly acquiring land, so that the difficulty and investment in popularization and construction of the charging station are greatly reduced, the construction period is greatly shortened, and the construction problems of various charging piles are solved; after the wireless charging is adopted, the battery pack can be naturally charged along with the use and the electricity compensation, the electric quantity of the battery is kept in a shallow charging and shallow discharging state as far as possible, the battery pack is in an optimal working state, the failure rate of the new energy vehicle can be reduced, the operation efficiency is favorably improved, the new energy vehicle can reduce the maintenance cost of the battery, the service life of the battery can be extended to the maximum extent, the requirement for replacing the battery in the service life cycle of the vehicle is reduced, and the cyclic utilization of the later-period waste battery is facilitated.
Claims (7)
1. The road section type mobile wireless charging station for the electric automobile is characterized by comprising a charging road section, wherein at least two energy transmitting coils which are arranged at intervals are buried underground in the charging road section, the energy transmitting coils are connected with a ground power supply circuit, and the ground power supply circuit is connected with a ground control unit; a vehicle body detection device is arranged between any two energy transmitting coils, the ground control unit is connected with the vehicle body detection device in a sampling mode, the vehicle body detection device is used for detecting whether a vehicle runs to the road surface above the vehicle body detection device, and when the vehicle is detected to run to the road surface above the vehicle body detection device, detection information is sent to the ground control unit; the ground control unit is used for controlling the disconnection of the next energy transmitting coil adjacent to the vehicle body detection device along the vehicle running direction and the ground power supply circuit when receiving the detection information sent by the vehicle body detection device;
the ground power supply circuit comprises a three-phase alternating current power supply, a rectification module and an inversion module; the charging section is also provided with a charging monitoring device which is connected with the rectifying unit, the inverting unit, the ground control unit and the transformer substation wireless communication module through CAN communication, displays state information and real-time data of each unit and each module, and performs startup and shutdown operation and parameter issuing according to requirements; the charging monitoring device is also connected with the charging section wireless communication module through RS485, the charging section wireless communication module is in wireless communication with the vehicle-mounted wireless communication module, and the charging monitoring device displays the vehicle position, battery information, charging time and efficiency information sent by the charging section wireless communication module and performs charging control according to charging requirements.
2. The electric vehicle road-type mobile wireless charging station according to claim 1, wherein a vehicle body detection device is also provided in front of the charging road section in the vehicle traveling direction.
3. The electric vehicle road-segment type mobile wireless charging station according to any one of claims 1-2, wherein the vehicle body detection means is a magnetic sensor.
4. The electric automobile road section type mobile wireless charging station is characterized by comprising at least two sections of charging road sections, wherein an energy transmitting coil is buried underground in each section of charging road section, the energy transmitting coils are connected with a ground power supply circuit, and the ground power supply circuit is connected with a ground control unit; a vehicle body detection device is arranged between any two sections of charging sections, and the ground control unit is connected with the vehicle body detection device in a sampling manner; the vehicle body detection device is used for detecting whether the vehicle runs to the road surface above the vehicle body detection device and sending detection information to the ground control unit when the vehicle is detected to run to the road surface above the vehicle body detection device; the ground control unit is used for controlling the disconnection of the next energy transmitting coil adjacent to the vehicle body detection device along the vehicle running direction and the ground power supply circuit when receiving the detection information sent by the vehicle body detection device;
the ground power supply circuit comprises a three-phase alternating current power supply, a rectification module and an inversion module; the charging section is also provided with a charging monitoring device which is connected with the rectifying unit, the inverting unit, the ground control unit and the transformer substation wireless communication module through CAN communication, displays state information and real-time data of each unit and each module, and performs startup and shutdown operation and parameter issuing according to requirements; the charging monitoring device is also connected with the charging section wireless communication module through RS485, the charging section wireless communication module is in wireless communication with the vehicle-mounted wireless communication module, and the charging monitoring device displays the vehicle position, battery information, charging time and efficiency information sent by the charging section wireless communication module and performs charging control according to charging requirements.
5. The electric vehicle road-section-type mobile wireless charging station according to claim 4, wherein a vehicle body detection device is also provided in front of the foremost one of said charging sections in the vehicle traveling direction.
6. The electric automobile road section type mobile wireless charging station is characterized by comprising at least two sections of charging road sections, wherein at least two energy transmitting coils which are arranged at intervals are buried underground in each section of charging road section, the energy transmitting coils are connected with a ground power supply circuit, and the ground power supply circuit is connected with a ground control unit; a vehicle body detection device is arranged between any two sections of charging sections and/or between any two energy transmitting coils in each section of charging section, and the ground control unit is connected with the vehicle body detection device in a sampling manner; the vehicle body detection device is used for detecting whether the vehicle runs to the road surface above the vehicle body detection device and sending detection information to the ground control unit when the vehicle is detected to run to the road surface above the vehicle body detection device; the ground control unit is used for controlling the disconnection of the next energy transmitting coil adjacent to the vehicle body detection device along the vehicle running direction and the ground power supply circuit when receiving the detection information sent by the vehicle body detection device;
the ground power supply circuit comprises a three-phase alternating current power supply, a rectification module and an inversion module; the charging section is also provided with a charging monitoring device which is connected with the rectifying unit, the inverting unit, the ground control unit and the transformer substation wireless communication module through CAN communication, displays state information and real-time data of each unit and each module, and performs startup and shutdown operation and parameter issuing according to requirements; the charging monitoring device is also connected with the charging section wireless communication module through RS485, the charging section wireless communication module is in wireless communication with the vehicle-mounted wireless communication module, and the charging monitoring device displays the vehicle position, battery information, charging time and efficiency information sent by the charging section wireless communication module and performs charging control according to charging requirements.
7. An electric vehicle road-type mobile wireless charging station according to claim 6, wherein a vehicle body detection device is also provided in front of the foremost one of said charging sections in the vehicle traveling direction.
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| CN111055700A (en) * | 2018-10-15 | 2020-04-24 | 中惠创智无线供电技术有限公司 | Dynamic charging system for road vehicles and wireless charging transmitting device thereof |
| CN109435718B (en) * | 2018-12-19 | 2021-03-16 | 中车唐山机车车辆有限公司 | Electric energy transmission system |
| CN109861407A (en) * | 2019-01-04 | 2019-06-07 | 重庆大学 | Electric vehicle wireless charging system and control method based on single-coil position detection on the ground |
| CN110194069A (en) * | 2019-06-24 | 2019-09-03 | 古勇 | Automobile wireless charging unit |
| CN110194068A (en) * | 2019-07-10 | 2019-09-03 | 北京有感科技有限责任公司 | A kind of wireless charging system and electric car |
| CN112026575A (en) * | 2020-07-27 | 2020-12-04 | 深圳技术大学 | An automatic charging system and management system for electric vehicles based on cloud platform |
| CN116620093B (en) * | 2023-07-19 | 2023-10-13 | 深圳市创世富尔电子有限公司 | Control method and system for photovoltaic power generation of new energy automobile |
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| JP5470965B2 (en) * | 2009-03-27 | 2014-04-16 | 日産自動車株式会社 | Power supply device |
| JP5513538B2 (en) * | 2012-02-17 | 2014-06-04 | 株式会社東海理化電機製作所 | Non-contact charger |
| US20160023557A1 (en) * | 2014-07-25 | 2016-01-28 | Qualcomm Incorporated | Devices, systems, and method for dynamic electric vehicle charging with position detection |
| CN105048651B (en) * | 2015-08-12 | 2017-08-25 | 中国科学院电工研究所 | A kind of switching method of supplying power to of electric automobile mobile wireless charging device |
| CN105882446B (en) * | 2016-04-29 | 2019-03-22 | 恒大法拉第未来智能汽车（广东）有限公司 | Electric car wireless charging method, apparatus and system |
| CN106787249B (en) * | 2017-02-14 | 2019-07-09 | 武汉珞森源科技有限公司 | Electric car dynamic multi-level wireless charging system |
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