A road vehicle dynamic charging system and wireless charging transmitter

Abstract

The present application discloses a wireless charging transmitter in a road vehicle dynamic charging system, comprising a section controller, a plurality of transmitting coils arranged on the ground of the section, and their power supply controllers; the section controller stores the position of each transmitting coil and is connected to each power supply controller, and the section controller is used to obtain the vehicle position of the vehicle traveling on the road. If the vehicle is traveling within the range of the section where the section controller is located, the power supply controller of the transmitting coil within the coupling range of the vehicle's receiving coil in the section is determined as the power supply controller to be started, and the power supply controller to be started is started to charge the vehicle. The present application effectively realizes non-stop charging during driving, and can adopt section-by-section charging control, thereby reducing equipment costs and improving charging control efficiency. The present application also discloses a road vehicle dynamic charging system and a control method thereof, which also have the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present application relates to the field of wireless power supply technology, and in particular to a road vehicle dynamic charging system and a wireless charging transmitter and control method thereof. Background Art

[0002] With my country's vigorous promotion of new energy technologies, electric vehicles have now been widely used and developed rapidly.

[0003] Charging electric vehicles is a significant issue in the application of new energy. To make charging more convenient, utilizing road-mounted equipment to enable dynamic charging while driving has become a key research focus and development trend in this field. Compared to fixed-site charging using charging piles, dynamic charging while driving can significantly save charging time and avoid the inconvenience caused by the limited number of charging piles and their limited distribution. However, existing road dynamic charging technologies are still immature and suffer from common issues such as complex control processes and high equipment costs.

[0004] It can be seen that what kind of dynamic charging technology for road vehicles to adopt in order to effectively improve charging efficiency and save equipment costs is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a road vehicle dynamic charging system and its wireless charging transmitter and control method, so as to effectively improve the charging efficiency and save equipment costs.

[0006] To solve the above technical problems, the present application provides a wireless charging transmitter in a road vehicle dynamic charging system, comprising a road section controller, a plurality of transmitting coils arranged on the road surface and a power supply controller thereof;

[0007] The road section controller stores the position of each transmitting coil and is connected to each power supply controller. The road section controller is used to obtain the vehicle position of a vehicle traveling on the road. If the vehicle is traveling within the range of the road section where the road section controller is located, the power supply controller of the transmitting coil within the coupling range of the vehicle's receiving coil in the road section is determined as the power supply controller to be started, and the power supply controller to be started is started to charge the vehicle.

[0008] The present application also provides a road vehicle dynamic charging system, comprising a wireless charging receiving device provided on the vehicle side and a plurality of wireless charging transmitting devices as described above provided on the ground side of different road sections;

[0009] The wireless charging receiving device includes a receiving controller, a vehicle-mounted positioning device connected to the receiving controller, a receiving coil for resonant coupling with the transmitting coil to pick up energy, and a power converter connected to the output end of the receiving coil; the output end of the power converter is connected to the vehicle-mounted power supply battery; the section controller and the receiving controller both include wireless communication modules so that the receiving controller can send the vehicle position to the section controller.

[0010] Optionally, the section controller of each of the wireless charging transmitting devices is networked with a monitoring terminal, and is configured to send charging status data to the monitoring terminal and receive control instructions sent by the monitoring terminal.

[0011] Optionally, the section controller further includes a positioning module for obtaining an installation position of the section controller, so that the section controller generates a position of each transmitting coil according to the installation position and a preset relative position of each transmitting coil in the section.

[0012] Optionally, the road segment controller is further configured to:

[0013] The installation positions of the other road section controllers are obtained, and the adjacent road section controllers are confirmed, so that when the vehicle leaves the road section where the road section controller is located, prompt information is sent to the adjacent road section controllers in the driving direction.

[0014] Optionally, the road section controller is specifically configured to:

[0015] According to p r =p c +d cr Calculate the position of the receiving coil of the vehicle, which will satisfy the condition d tr =|p t -p r |<δ The power supply controller of the transmitting coil is determined as the power supply controller to be started;

[0016] Among them, p r is the position of the receiving coil, p c is the vehicle position, d cr is the preset relative distance between the vehicle-mounted positioning device and the receiving coil, p t is the position of the transmitting coil, d tr is the relative distance between the receiving coil and the transmitting coil, and δ is a preset distance threshold.

[0017] Optionally, the road segment controller is further configured to:

[0018] Before starting the power supply controller to be started to charge the vehicle, wireless communication is performed with the receiving controller to obtain charging demand information of the vehicle where the receiving controller is located, and the charging demand information is sent to the power supply controller to be started, so that the power supply controller to be started configures the charging output power according to the charging demand information.

[0019] Optionally, the road segment controller is further configured to:

[0020] Before obtaining the charging demand information of the vehicle where the receiving controller is located, obtain the vehicle parameter information of the vehicle to determine whether the vehicle is an authorized vehicle. If so, continue wireless communication with the receiving controller; if not, stop wireless communication with the receiving controller.

[0021] Optionally, the road segment controller is further configured to:

[0022] Wireless communication is performed with the receiving controller to obtain the speed of the vehicle where the receiving controller is located, so as to adjust the preset distance threshold according to the vehicle speed and the communication delay time of the road vehicle dynamic charging system.

[0023] The present application also provides a method for controlling dynamic charging of road vehicles, which is applied to the road section controller in any of the above-mentioned dynamic charging systems for road vehicles, comprising:

[0024] Obtaining a vehicle position of the vehicle where the receiving controller is located;

[0025] Determining whether the vehicle is traveling within the range of the road section where the road section controller is located;

[0026] If yes, determining the power supply controller of the transmitting coil within the coupling range of the receiving coil in the road section as the power supply controller to be started;

[0027] The to-be-started power supply controller is activated to charge the vehicle.

[0028] The wireless charging transmitter in the road vehicle dynamic charging system provided in the present application includes a road section controller, multiple transmitting coils arranged on the ground of the road section, and their power supply controllers; the road section controller stores the position of each transmitting coil and is connected to each power supply controller. The road section controller is used to obtain the vehicle position of a vehicle traveling on the road. If the vehicle is traveling within the range of the road section where the road section controller is located, the power supply controller of the transmitting coil within the coupling range of the vehicle's receiving coil in the road section is determined as the power supply controller to be started, and the power supply controller to be started is started to charge the vehicle.

[0029] It can be seen that compared with the existing technology, the wireless charging transmitter in the road vehicle dynamic charging system provided by the present application can be respectively set in each road section on the ground. By obtaining the vehicle position information in real time, the power supply controller of the transmitting coil at the corresponding position is activated, thereby starting the energy transmission work to charge the vehicle, thereby realizing non-stop charging during driving, saving the time of searching for charging piles and charging waiting time, and greatly facilitating user use. At the same time, the present application can adopt section-by-section charging control, and each section controller uniformly and orderly manages and controls the transmitting coils in this section, which not only saves the number of related control equipment and wireless communication equipment used in the section and reduces equipment costs, but also avoids frequent direct communication between each power supply controller and the vehicle side, thereby improving charging control efficiency. The road vehicle dynamic charging system and control method thereof provided by the present application also have the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, the following is a brief introduction to the drawings required for describing the prior art and the embodiments of the present application. Of course, the drawings described below in connection with the embodiments of the present application are only part of the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the provided drawings without inventive effort, and the obtained other drawings also fall within the scope of protection of the present application.

[0031] Figure 1 This is an application scenario diagram of dynamic charging of road vehicles provided by this application;

[0032] Figure 2 This is a structural block diagram of a wireless charging transmitter in a road vehicle dynamic charging system provided by this application;

[0033] Figure 3 This is a structural block diagram of a road vehicle dynamic charging system provided by this application;

[0034] Figure 4 This is another application scenario diagram of dynamic charging of road vehicles provided by this application;

[0035] Figure 5 This is a flow chart of a method for controlling dynamic charging of road vehicles provided in this application;

[0036] Figure 6 This is a flowchart of another road vehicle dynamic charging control method provided by this application. DETAILED DESCRIPTION

[0037] The core of this application is to provide a road vehicle dynamic charging system and its wireless charging transmitter and control method, so as to effectively improve the charging efficiency and save equipment costs.

[0038] In order to describe the technical solutions in the embodiments of the present application more clearly and completely, the technical solutions in the embodiments of the present application will be introduced below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] See also Figure 1 and Figure 2 , Figure 1 This is an application scenario diagram of dynamic charging of road vehicles provided by this application; Figure 2 This is a structural block diagram of a wireless charging transmitter in a road vehicle dynamic charging system provided by this application.

[0040] like Figure 1 As shown, the wireless charging transmitter 2 in the road vehicle dynamic charging system provided by the present application can be respectively arranged in multiple road sections on the ground. When a vehicle equipped with a corresponding wireless charging receiving device 1 travels in a certain road section, the wireless charging transmitter 2 in the road section can start wireless charging to charge the vehicle's on-board battery.

[0041] It should be noted that when dividing the road sections, those skilled in the art can design the length of each road section according to the actual conditions such as the terrain, line angle, and surrounding obstacles at the time of application. Figure 2 As shown, the road sections can be laid discontinuously to more flexibly adapt to different terrains. In practice, especially for buses and other vehicles that operate on fixed routes, those skilled in the art can design a certain spacing between two adjacent sections based on the battery life of the vehicle, thereby dividing the vehicle route into multiple discontinuous sections and achieving segmented supervision of the entire long-distance route.

[0042] like Figure 2 As shown, the wireless charging transmitter 2 in the road vehicle dynamic charging system provided by the present application includes a road section controller 21, a plurality of transmitting coils 22 arranged on the road surface and a power supply controller 23 thereof;

[0043] The section controller 21 stores the position of each transmitting coil 22 and is connected to each power supply controller 23. The section controller 21 is used to obtain the vehicle position of a vehicle traveling on the road. If the vehicle is traveling within the range of the section where the section controller 21 is located, the power supply controller 23 of the transmitting coil 22 within the coupling range of the vehicle's receiving coil 13 in the section is determined as the power supply controller to be started, and the power supply controller to be started is started to charge the vehicle.

[0044] Specifically, the present application divides different areas of the road into sections, with a wireless charging transmitter 2 installed in each section. Each wireless charging transmitter 2 is managed and controlled by a section controller 21. When a vehicle equipped with a wireless charging receiver 1 travels to a corresponding section of the road, the wireless charging transmitter 1 in that section, under the control of the section controller 21, can transfer energy to the wireless charging receiver 1 to charge the vehicle.

[0045] Each wireless charging transmitter 2 provided herein is equipped with a section controller 21 and multiple transmitting coils 22. Each transmitting coil 22 is equipped with a corresponding power supply controller 23 to control the input of transmission energy to the corresponding transmitting coil 22 under the control of the section controller 21. A power supply controller 23 can control one or more transmitting coils 22, and wireless charging transmitters 2 within different sections can be equipped with different numbers of transmitting coils 22.

[0046] The power controller 23 is the power conversion component of the wireless charging transmitter. Once activated, it inverts the power input from the power supply according to the operating frequency of the resonant topology frequency control system and outputs it to the connected transmitting coil 22. The transmitting coil 22 then transmits the energy to the receiving coil 13 on the vehicle via electromagnetic coupling. The power supply can specifically come from the power grid, roadside wind power generation and storage, or photovoltaic power generation and storage. The power controller 23 can connect to the power supply using the corresponding power input interface.

[0047] The activation of power conversion by the power supply controller 23 is specifically controlled by the section controller 21. As a preferred embodiment, communication between the section controller 21 and each power supply controller 23 can employ a convenient CAN bus communication method. Of course, those skilled in the art may also employ other methods such as RS485, fiber optic communication, or network communication, and this application is not limited thereto.

[0048] The section controller 21 is the control core of the entire section, which can communicate with the vehicle-mounted controller (i.e. Figure 2 The receiving controller 11 in the embodiment of the present invention communicates wirelessly with the vehicle to obtain relevant information of the vehicle, that is, the vehicle position, so as to determine the power supply controller to be started according to the vehicle position, thereby starting the power supply controller to be started, and the corresponding transmitting coil 22 transmits energy to charge the vehicle.

[0049] The wireless communication between each segment controller 21 and the receiving controller 11 can be carried out using a communication method such as WiFi, RF433, DSRC, or a 5G network. Persons skilled in the art can select a communication method with high real-time performance and strong anti-interference capabilities, and this application does not limit this. Of course, it is readily understood that the length of a single segment can be set based on the effective communication distance of the selected wireless communication method, and the number of transmitting coils 22 within the segment can be further determined based on the size of the transmitting coils 22.

[0050] It is easy to understand that the transmitting coils 22 in the road section are arranged sequentially on the road surface. The road section controller 21 pre-stores the installation positions of the transmitting coils 22 in the road section, so that it can compare them with the vehicle position to determine the transmitting coils 22 within the coupling range of the receiving coil 13. Then, the power supply controllers 23 corresponding to these transmitting coils 22 are the power supply controllers to be started.

[0051] In this application, within a road section, the section controller 21 controls all power supply controllers 23 within the entire section. Therefore, the receiving controller 11 only needs to exchange information with the section controller 21. Each power supply controller 23 does not need to be equipped with a wireless communication module and does not need to exchange information with the receiving controller 11. This can greatly reduce the interaction workload of the receiving controller 11, effectively reduce the need for wireless communication modules, and reduce equipment costs.

[0052] In summary, the normal working process of the power supply controller 23 of the wireless charging transmitter 2 can be divided into three states: standby, start-up, and charging. The normal working process of the receiving coil 13 of the wireless charging receiver 1 can be divided into two states: charging and non-charging.

[0053] While the vehicle is traveling, the receiving controller 11 continuously transmits its location to the segment controllers 21 for each road segment within its wireless communication range. Upon detecting that the vehicle is traveling within its segment, the segment controller 21 compares the vehicle's location with the locations of the transmitter coils 22 within that segment. This determines which transmitter coil 22 is within the coupling range of the receiving coil 13 (referred to as the "to-be-activated" transmitter coil). The corresponding power supply controller 23 is then designated as the "to-be-activated" power supply controller. The segment controller 21 then sends a start command to the "to-be-activated" power supply controller, causing it to transition from a standby state to an active state.

[0054] In this standby state, the power supply controller 23 does not initiate power conversion for the connected power source; only basic circuitry, such as for communication with the section controller 21, is operational. Upon receiving a start command, the power supply controller 23 activates the power conversion circuitry, and the transmitting coil 22 begins emitting electromagnetic energy. At this point, the power supply controller 23 is in the active state. If the activated transmitting coil 22 is within the coupling range of the vehicle's receiving coil 13, the transmitting coil 22 and the receiving coil 13 will electromagnetically couple to generate energy transfer, transmitting energy to the vehicle side where the receiving coil 13 is located. At this point, the power supply controller 23 and the receiving coil are in a charging state.

[0055] Because the vehicle is dynamically moving on the road, the relative position of the receiving coil 13 and transmitting coil 22 changes as the vehicle moves. When the distance between the two is no longer within the coupling range, the transmitting coil 22 can no longer induce current in the receiving coil 13. Therefore, the energy transmitted by the transmitting coil 22 cannot be transferred to the receiving coil 13. The power supply controller changes from the charging state to the active state, and the receiving coil 13 changes from the charging state to the non-charging state (in the absence of other transmitting coils 22 to charge the receiving coil 13).

[0056] It is easy to understand that to save energy, when the receiving coil 13 is no longer within the coupling range of the transmitting coil, the section controller 21 can further shut down the already activated power supply controller 23. Upon receiving the shutdown command from the section controller 21, the power supply controller 23 shuts down the power conversion circuit and switches to standby mode.

[0057] It can be seen that the wireless charging transmitter in the road vehicle dynamic charging system provided by this application can be respectively set up in each road section on the ground. By obtaining the vehicle position information in real time, the power supply controller of the transmitting coil at the corresponding position is activated, thereby starting the energy transmission work to charge the vehicle, thereby realizing non-stop charging during driving, eliminating the time of searching for charging piles and charging waiting time, and greatly facilitating user use. At the same time, this application can adopt segmented charging control, and each segment controller can uniformly and orderly manage and control the transmitting coils in this segment, which not only saves the number of related control equipment and wireless communication equipment used in the segment, reduces equipment costs, but also avoids frequent direct communication between each power supply controller and the vehicle side, and improves charging control efficiency.

[0058] Please refer to Figure 3 , Figure 3 This is a structural block diagram of a road vehicle dynamic charging system provided by this application. Figure 3As shown, the present application provides a road vehicle dynamic charging system comprising a wireless charging receiving device 1 provided on the vehicle side and a plurality of wireless charging transmitting devices 2 as described above provided on the ground side of different road sections;

[0059] The wireless charging receiving device 1 includes a receiving controller 11, an on-board positioning device 12 connected to the receiving controller, a receiving coil 13 for resonant coupling with the transmitting coil 22 to pick up energy, and a power converter 14 connected to the output end of the receiving coil. The output end of the power converter 14 is connected to the on-board power supply battery; the section controller 21 and the receiving controller 11 both include wireless communication modules so that the receiving controller 11 can send the vehicle position to the section controller 21.

[0060] like Figure 3 As shown, the wireless charging receiving device 1 mounted on a vehicle includes a receiving coil 13, which can pick up energy during electromagnetic coupling with a transmitting coil 22. This energy is then converted by a power converter 14 and stored in the vehicle's battery, thereby charging the vehicle. The receiving controller 11 in the wireless charging receiving device 1 also includes a wireless communication module and is connected to the vehicle-mounted positioning device 12 via a CAN bus or other method. This module is used to wirelessly communicate with each road segment controller 21, transmitting the positioning result from the vehicle-mounted positioning device 12, i.e., the vehicle's position, to each road segment controller 21.

[0061] It should be noted that currently commercially available vehicles generally provide on-board positioning services, that is, a positioning device is already installed in the vehicle. In this case, the positioning device already configured in the vehicle can be used as the on-board positioning device 12 referred to in this application. Specifically, the receiving controller 11 can be connected to the vehicle CAN bus to achieve CAN bus communication with the positioning device. Generally, the vehicle CAN bus also connects to the vehicle controller, battery management system, and vehicle automatic driving system, thereby further obtaining more vehicle information.

[0062] The vehicle-mounted positioning device 12 may specifically be a GPS, Beidou, or pulse ranging system, among others. Those skilled in the art may select and configure the system at their discretion, and this application does not limit this. Of course, the higher the positioning accuracy, the more accurate the control effect achieved. The positioning accuracy can be made significantly smaller than the length of the transmitting coil 22 in the direction of travel, allowing for precise control of the position and number of transmitting coils 22 within the coupling range of the receiving coil 13.

[0063] It can be seen that in the road vehicle dynamic charging system provided by the present application, the wireless charging transmitter 2 located on the ground within each road section can interact with the wireless charging receiver 1 in the vehicle in real time to obtain vehicle location information, thereby activating the power supply controller 23 of the transmitting coil 22 at the corresponding position, starting the energy transmission work to charge the vehicle, thereby realizing non-stop charging during driving, eliminating the time of searching for charging piles and charging waiting time, and greatly facilitating user use. At the same time, the present application adopts segmented charging control, and each segment controller 21 uniformly and orderly manages and controls the transmitting coil 22 within the segment, which not only saves the number of related control devices and wireless communication devices used in the segment and reduces equipment costs, but also avoids frequent direct communication between each power supply controller 23 and the vehicle side, thereby improving charging control efficiency.

[0064] The road vehicle dynamic charging system provided in this application is based on the above embodiments:

[0065] Please refer to Figure 4 , Figure 4 This is another application scenario diagram of dynamic charging of road vehicles provided by this application. Figure 4 As shown, as a preferred embodiment, the section controller 21 of each wireless charging transmitter 2 is networked with the monitoring terminal 3 to send charging status data to the monitoring terminal 3 and receive control instructions sent by the monitoring terminal 3.

[0066] Specifically, each wireless charging transmitter 2 and the monitoring terminal 3 can form a network connection topology through networking technology to perform network communication. Each road section controller 21 can send charging status data to the monitoring terminal 3 for user viewing.

[0067] The charging status data may specifically include information such as the vehicle location obtained from the receiving controller 11, the ID information of the currently activated transmitting coil 22 or the power supply controller 23, and the status information obtained from the power supply controller 23 (such as the real-time power supply, charging time, etc.); it may also include fault information obtained by the health status detection of the section controller 21 and each power supply controller 23, so as to provide fault warnings; it may also include power consumption information obtained by the power metering device on the power supply input side, etc.; in addition, the road vehicle dynamic charging system provided by this application can further add some ground auxiliary equipment, such as road foreign object detection equipment, living body protection equipment, etc., and display the relevant information on the monitoring terminal 3.

[0068] On the other hand, users can use the monitoring terminal 3 to send control commands, such as shutdown commands, to the section controller 21 of a certain road section, so that personnel can perform maintenance work such as inspection and repair of the wireless charging transmitter 2 in that section. Due to the use of segmented control, the inspection and repair of a section will not affect the charging of vehicles by the wireless charging transmitters in other sections.

[0069] Of course, it is easy to understand that before the monitoring terminal 3 and each road section controller 21 exchange data information, they also need to perform a handshake operation and a heartbeat check operation in the networking communication.

[0070] As a preferred embodiment, the section controller 21 further includes a positioning module for obtaining the installation position of the section controller 21 so that the section controller 21 generates the position of each transmitting coil 22 according to the installation position and the preset relative positions of each transmitting coil 22 in the section.

[0071] Specifically, as previously described, each segment controller 21 stores the positions of each transmitting coil 22 within the segment. Preferably, the positions of each transmitting coil 22 are generated by a positioning module within the segment controller 21. Specifically, after the segment controller 21 is installed, the positioning module can be used to locate the installation location of the segment controller 21. The specific positions of each transmitting coil 22 are then determined based on the number of transmitting coils 22 within the segment and their installation spacing (i.e., their relative positions within the segment).

[0072] As a preferred embodiment, the section controller 21 is further configured to:

[0073] The installation locations of other road section controllers 21 are obtained, and adjacent road section controllers are confirmed, so that when the vehicle leaves the road section where the road section controller 21 is located, prompt information is sent to the adjacent road section controllers in the driving direction.

[0074] Specifically, each road section controller 21 can further exchange information with the adjacent road section controller in the driving direction. The adjacent road section controller can enable the wireless communication module to communicate wirelessly with the receiving controller 11 on the vehicle after receiving the prompt information, and turn off the wireless communication module at other times to further reduce power consumption.

[0075] As a preferred embodiment, the road segment controller 21 is specifically configured to:

[0076] According to p r =p c +d cr Calculate the position of the vehicle's receiving coil 13 to satisfy the condition d tr =|p t -p r|<δ The power supply controller 23 of the transmitting coil 22 is determined to be the power supply controller to be started;

[0077] Among them, p r is the position of the receiving coil 13, p c is the vehicle position, d cr is the preset relative distance between the vehicle-mounted positioning device 12 and the receiving coil 13, p t is the position of the transmitting coil 22, d tr is the relative distance between the receiving coil 13 and the transmitting coil 22, and δ is a preset distance threshold.

[0078] Specifically, the road section controller 21 obtains the vehicle position p c When the vehicle positioning device 12 and the receiving coil 13 are set to the preset relative distance d cr Get the position of the receiving coil 13 (more precisely, the position of the coil center) p r , and then the transmitting coil 22 whose relative distance to the receiving coil 13 is less than the preset distance threshold δ is determined as the transmitting coil to be started, and the corresponding power supply controller is determined as the power supply controller to be started.

[0079] It should be noted that, in theory, the preset distance threshold δ can be the maximum relative distance d at which coupling between the receiving coil 13 and the transmitting coil 22 is possible. However, in practice, it is readily understood that due to communication delays, by the time the segment controller 21 activates the standby power supply controller, the vehicle has already deviated from the vehicle position received by the segment controller 21. Therefore, the preset distance threshold δ can be set to a predetermined value greater than the maximum relative distance d to ensure that there are (or even a sufficient number of) transmitting coils 22 available to charge the receiving coil 13.

[0080] As a preferred embodiment, the section controller 21 is further configured to:

[0081] Before starting the power supply controller to be started to charge the vehicle, wireless communication is performed with the receiving controller 11 to obtain the charging demand information of the vehicle where the receiving controller 11 is located, and send it to the power supply controller to be started so that the power supply controller to be started can configure the charging output power according to the charging demand information.

[0082] As mentioned above, in the road vehicle dynamic charging system provided in the present application, the receiving controller 11 can be connected to the vehicle CAN bus to obtain the vehicle's charging demand information (such as required voltage, required current, required power, etc.), and send it to the section controller 21, so that the section controller 21 sends the charging demand information to the power supply controller to be started, and the power supply controller to be started outputs the corresponding charging power according to the charging demand information after startup.

[0083] Therefore, the complete operation process of the section controller 21 can be divided into the following stages: wireless communication interaction, charging decision-making, charging parameter configuration, charging start control, charging data interaction, and charging shutdown control. Specifically, the section controller 21 obtains charging demand information and vehicle location during the wireless communication interaction stage with the receiving controller 11, determines the power supply controller to be activated during the charging decision stage, sends charging demand information to the power supply controller to be activated during the charging parameter configuration stage, activates the determined power supply controller to be activated during the charging startup control stage, and obtains charging status data from the transmitting coil 22 when charging the vehicle during the charging data interaction stage, uploads it to the monitoring terminal 3, and finally shuts down the activated power supply controller 23 during the charging shutdown control stage.

[0084] As a preferred embodiment, the section controller 21 is further configured to:

[0085] Before obtaining the charging requirement information of the vehicle where the receiving controller 11 is located, obtain the vehicle parameter information of the vehicle to determine whether the vehicle is an authorized vehicle. If so, continue wireless communication with the receiving controller 11. If not, stop wireless communication with the receiving controller 11.

[0086] Specifically, after establishing wireless communication with the vehicle, the section controller 21 can first perform charging authorization authentication on the vehicle to identify whether the vehicle is equipped with a corresponding wireless charging receiving device 1. If so, it is a vehicle with charging authorization and can continue wireless communication to complete wireless charging; if not, it is a vehicle without charging authorization and needs to stop wireless communication.

[0087] The vehicle parameter information may specifically include any one or any combination of the following: wireless communication protocol version, power supply level, receiving coil type, resonant topology type, receiving coil mechanical air gap, etc.

[0088] As a preferred embodiment, the section controller 21 is further configured to:

[0089] Wireless communication is performed with the receiving controller 11 to obtain the speed of the vehicle where the receiving controller 11 is located, so as to adjust the preset distance threshold δ according to the vehicle speed and the communication delay time of the road vehicle dynamic charging system.

[0090] Specifically, considering the communication delay issue in practical applications as described above, the receiving controller 11 in this application can also send the vehicle speed to the segment controller 21 when exchanging information with the segment controller 21. This allows the segment controller 21 to instantly adjust the preset distance threshold δ based on the vehicle speed and communication delay time to ensure that the number of activated transmitting coils 22 remains reasonable and minimize reactive power loss and energy radiation. It is easy to understand that the greater the vehicle speed, the greater the preset distance threshold δ, and the more transmitting coils 22 are activated; the lower the vehicle speed, the smaller the preset distance threshold δ, and the relatively fewer transmitting coils 22 are activated.

[0091] As a preferred embodiment, the wireless communication module of the road segment controller 21 is a multi-channel wireless communication module;

[0092] The section controller 21 is further used for:

[0093] After the vehicle leaves the road section where the road section controller 21 is located, the wireless communication channel allocated to the receiving controller 11 is cancelled.

[0094] Specifically, since there are usually many vehicles traveling on a road, it is necessary to use multi-channel wireless communication to achieve simultaneous communication between the road segment controller 21 and multiple receiving controllers 11. At the same time, when a vehicle leaves the road segment where a road segment controller 21 is located, the road segment controller 21 must immediately release resources so that it can reuse the wireless communication channel to continue communicating with the receiving controller 11 of the next vehicle about to enter the road segment.

[0095] The following is an introduction to the dynamic charging control method for road vehicles provided in this application.

[0096] Please refer to Figure 5 , Figure 5 This is a flowchart of a method for controlling dynamic charging of road vehicles provided in this application, which is applied to the road section controller 21 in any of the above-mentioned road vehicle dynamic charging systems, and mainly includes the following steps:

[0097] Step 51: Obtain the vehicle position of the vehicle where the receiving controller is located.

[0098] Step 52: Determine whether the vehicle is traveling within the range of the road section where the road section controller 21 is located; if so, proceed to step 53.

[0099] Step 53: Determine the power supply controller 23 of the transmitting coil 22 within the coupling range of the receiving coil 13 in the road section as the power supply controller to be started; determine the started power supply controller 23 outside the coupling range of the receiving coil 13 in the road section as the power supply controller to be shut down; and proceed to step 54.

[0100] Step 54: Start the power supply controller to be started to charge the vehicle, and shut down the power supply controller to be shut down.

[0101] It can be seen that the dynamic charging control method for road vehicles provided by this application utilizes the wireless charging transmitter 2 located within the ground range of each road section to interact with the wireless charging receiver 1 in the vehicle in real time to obtain vehicle location information, thereby activating the power supply controller 23 of the transmitting coil 22 at the corresponding position, and starting the energy transmission work to charge the vehicle, thereby realizing non-stop charging during driving, eliminating the time of searching for charging piles and charging waiting time, and greatly facilitating user use. At the same time, this application adopts segmented charging control, and each segment controller 21 uniformly and orderly manages and controls the transmitting coil 22 within the segment, which not only saves the number of related control devices and wireless communication devices used in the segment and reduces equipment costs, but also avoids frequent direct communication between each power supply controller 23 and the vehicle side, thereby improving charging control efficiency.

[0102] The method for controlling the dynamic charging of road vehicles provided in this application is based on the above embodiments:

[0103] As a preferred embodiment, after starting the power supply controller to be started to charge the vehicle, the method further includes:

[0104] Get charging status information during the charging process;

[0105] The charging status information is sent to a monitoring terminal that is networked with the section controller 21 of each wireless charging transmitting device 2 .

[0106] As a preferred embodiment, after the section controller 21 is installed, it further includes:

[0107] Call the positioning module to obtain the installation location of the road section controller 21;

[0108] The position of each transmitting coil 22 is generated according to the installation position and the preset relative position of each transmitting coil 22 in the road section.

[0109] As a preferred embodiment, the road vehicle dynamic charging control method provided in this application further includes:

[0110] When the vehicle leaves the road section where the road section controller 21 is located, a prompt message is sent to the adjacent road section controller in the driving direction;

[0111] The adjacent road segment controllers are determined in advance by the road segment controller 21 according to the acquired installation locations of other road segment controllers.

[0112] As a preferred embodiment, determining the power supply controller 23 of the transmitting coil 22 within the coupling range of the receiving coil 13 in the road section as the power supply controller to be started specifically includes:

[0113] According to p r =p c +d cr Calculating the position of the vehicle's receiving coil 13;

[0114] Will satisfy the condition d tr =|p t -p r |<δ The power supply controller 23 of the transmitting coil 22 is determined to be the power supply controller to be started;

[0115] Among them, p r is the position of the receiving coil 13, p c is the vehicle position, d cr is the preset relative distance between the vehicle-mounted positioning device 12 and the receiving coil 13, p t is the position of the transmitting coil 22, d tr is the relative distance between the receiving coil 13 and the transmitting coil 22, and δ is a preset distance threshold.

[0116] As a preferred embodiment, before starting the power supply controller to be started to charge the vehicle, the method further includes:

[0117] Wirelessly communicate with the receiving controller 11 to obtain charging demand information of the vehicle where the receiving controller 11 is located;

[0118] The charging demand information is sent to the power supply controller to be started, so that the power supply controller to be started configures the charging output power according to the charging demand information.

[0119] As a preferred embodiment, before obtaining the charging requirement information of the vehicle where the receiving controller 11 is located, the method further includes:

[0120] Get vehicle parameter information of the vehicle;

[0121] Determine whether the vehicle is an authorized vehicle;

[0122] If so, continue wireless communication with the receiving controller 11;

[0123] If not, the wireless communication with the receiving controller 11 is stopped.

[0124] As a preferred embodiment, the road vehicle dynamic charging control method provided by the present application satisfies the condition d tr =|p t -p r| <δ transmitting coil 22 of the power supply controller 23 is determined to be before the power supply controller to be started, further comprising:

[0125] Wirelessly communicate with the receiving controller 11 to obtain the speed of the vehicle where the receiving controller 11 is located;

[0126] The preset distance threshold δ is adjusted according to the vehicle speed and the communication delay time of the road vehicle dynamic charging system.

[0127] As a preferred embodiment, the wireless communication module of the road section controller 21 is a multi-channel wireless communication module, which further includes:

[0128] The wireless communication channel allocated to the receiving controller 11 is cancelled.

[0129] Please refer to Figure 6 , Figure 6 This is a flowchart of another road vehicle dynamic charging control method provided by the present application, which is applied to the road section controller 21 in any of the road vehicle dynamic charging systems described above, and mainly includes the following steps:

[0130] Step 61: Allocate a wireless communication channel to the receiving controller 11.

[0131] Step 62: Obtain vehicle parameter information of the vehicle where the receiving controller 11 is located.

[0132] Step 63: Determine whether the vehicle is an authorized vehicle; if so, proceed to step 64; if not, proceed to step 69.

[0133] Step 64: Obtain the charging requirement information, vehicle position and vehicle speed of the vehicle where the receiving controller 11 is located.

[0134] Step 65 : Determine whether the vehicle is traveling within the range of the road section where the road section controller 21 is located; if so, proceed to step 66 ; if not, proceed to step 69 .

[0135] Step 66: Adjust the preset distance threshold δ according to the vehicle speed and the communication delay time of the road vehicle dynamic charging system.

[0136] Step 67: According to d tr =|p t -p r |<δ, the power supply controller 23 of the transmitting coil 22 within the coupling range of the receiving coil 13 in the section is determined as the power supply controller to be started; the started power supply controller 23 outside the coupling range of the receiving coil 13 in the section is determined as the power supply controller to be shut down.

[0137] Step 68 : Start the power supply controller to be started according to the charging demand information to charge the vehicle, and shut down the power supply controller to be shut down; proceed to step 64 .

[0138] Step 69: Cancel the wireless communication channel allocated to the receiving controller 11.

[0139] The specific implementation of the road vehicle dynamic charging control method provided in this application can be referenced to each other with the wireless charging transmitter in the road vehicle dynamic charging system described above, and will not be repeated here.

[0140] The various embodiments of this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. For similar or identical parts between the various embodiments, reference can be made to each other. For the methods disclosed in the embodiments, since they correspond to the devices disclosed in the embodiments, the description is relatively simple, and for relevant parts, reference can be made to the device description.

[0141] It should also be noted that, in this application document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, system, article, or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, system, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, system, article, or device comprising the element.

[0142] The above is a detailed introduction to the technical solution provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the system and core ideas of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A road vehicle dynamic charging system, characterized in that: It includes a wireless charging receiving device installed on the vehicle side and multiple wireless charging transmitting devices installed on the ground side of different road sections; The wireless charging transmitter device includes a road section controller, a plurality of transmitting coils arranged on the ground of the road section and a power supply controller thereof; The section controller stores the position of each transmitting coil and is connected to each power supply controller. The section controller is used to obtain the vehicle position of a vehicle traveling on a road. If the vehicle is traveling within the range of the section where the section controller is located, the power supply controller of the transmitting coil within the coupling range of the vehicle's receiving coil in the section is determined as a to-be-activated power supply controller, and the to-be-activated power supply controller is activated to charge the vehicle. The wireless charging receiving device includes a receiving controller, an on-board positioning device connected to the receiving controller, a receiving coil for resonant coupling with the transmitting coil to pick up energy, and a power converter connected to the output end of the receiving coil; the output end of the power converter is connected to an on-board power supply battery; the section controller and the receiving controller both include wireless communication modules, so that the receiving controller can send the vehicle position to the section controller; The section controller is specifically used for: according to Calculate the position of the receiving coil of the vehicle, which will satisfy the condition The power supply controller of the transmitting coil is determined as the power supply controller to be started; in, is the position of the receiving coil, is the vehicle position, is the preset relative distance between the vehicle-mounted positioning device and the receiving coil, is the position of the transmitting coil, is the relative distance between the receiving coil and the transmitting coil, is the preset distance threshold; The section controller is further configured to: Wireless communication is performed with the receiving controller to obtain the speed of the vehicle where the receiving controller is located, so as to adjust the preset distance threshold according to the vehicle speed and the communication delay time of the road vehicle dynamic charging system.

2. The road vehicle dynamic charging system according to claim 1, characterized in that: The section controllers of the respective wireless charging transmitting devices are networked with a monitoring terminal, and are configured to send charging status data to the monitoring terminal and receive control instructions sent by the monitoring terminal.

3. The road vehicle dynamic charging system according to claim 1, characterized in that: The section controller further includes a positioning module for acquiring an installation position of the section controller so that the section controller generates a position of each transmitting coil according to the installation position and a preset relative position of each transmitting coil in the section.

4. The road vehicle dynamic charging system according to claim 3, characterized in that: The section controller is further configured to: The installation positions of the other road section controllers are obtained, and the adjacent road section controllers are confirmed, so that when the vehicle leaves the road section where the road section controller is located, prompt information is sent to the adjacent road section controllers in the driving direction.

5. The road vehicle dynamic charging system according to claim 4, characterized in that: The section controller is further configured to: Before starting the power supply controller to be started to charge the vehicle, wireless communication is performed with the receiving controller to obtain charging demand information of the vehicle where the receiving controller is located, and the charging demand information is sent to the power supply controller to be started, so that the power supply controller to be started configures the charging output power according to the charging demand information.

6. The road vehicle dynamic charging system according to claim 5, characterized in that: The section controller is further configured to: Before obtaining the charging demand information of the vehicle where the receiving controller is located, obtain the vehicle parameter information of the vehicle to determine whether the vehicle is an authorized vehicle. If so, continue wireless communication with the receiving controller; if not, stop wireless communication with the receiving controller.

7. A method for controlling dynamic charging of road vehicles, characterized in that: A road section controller used in a road vehicle dynamic charging system according to any one of claims 1 to 6, comprising: Get the vehicle position of the vehicle where the receiving controller is located; Determining whether the vehicle is traveling within the range of the road section where the road section controller is located; If yes, the power supply controller of the transmitting coil within the coupling range of the receiving coil in the road section is determined as the power supply controller to be started; Starting the to-be-started power supply controller to charge the vehicle; Determining a power supply controller of a transmitting coil within a coupling range of a receiving coil in the road section as a power supply controller to be started includes: according to Calculate the position of the receiving coil of the vehicle, which will satisfy the condition The power supply controller of the transmitting coil is determined as the power supply controller to be started; in, is the position of the receiving coil, is the vehicle position, is the preset relative distance between the vehicle-mounted positioning device and the receiving coil, is the position of the transmitting coil, is the relative distance between the receiving coil and the transmitting coil, is the preset distance threshold; It also includes: wirelessly communicating with the receiving controller to obtain the speed of the vehicle where the receiving controller is located, so as to adjust the preset distance threshold according to the vehicle speed and the communication delay time of the road vehicle dynamic charging system.

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