Wireless charging method, mobile power supply and cordless charging device

Abstract

The application relates to a wireless charging method, a mobile power supply and a wireless charging device. The method comprises the following steps: moving to the wireless charging device and acquiring multi-perception sensor information; when the multi-perception sensor information meets a preset condition, emitting a coupling signal of a first power and starting a power supply end area network, so that the wireless charging device receives the coupling signal, an awakening signal is generated through induction, and the wireless charging device is activated to start a wireless end area network according to the awakening signal; when the power supply end area network and the wireless end area network are matched and connected, the wireless charging device is activated under a second power, and a bus is activated through area network communication to confirm third power charging. The method can realize safe wireless charging.

Description

Technical Field

[0001] This application relates to the field of charging technology, and in particular to a wireless charging method, a mobile power supply, and a charging device without electricity. Background Technology

[0002] The charging methods for new energy vehicles are evolving from the mainstream AC / DC charging piles to a more diversified approach, giving rise to a series of new solutions such as mobile charging and energy storage grids. Among these, electricity-free charging devices offer advantages such as flexible power supply, no need for infrastructure, low cost, no waiting time, and resource sharing.

[0003] Contact-type charging devices, which are essentially powerless charging devices, achieve connectivity through a dedicated connector between the power supply end and the charging station end. The connection method is contact-based. However, they have drawbacks such as poor contact, easy contamination and oxidation of the contacts, difficulty in connection, easy damage, and short lifespan.

[0004] While contactless wireless charging can solve the problem of contactless charging devices, these devices themselves are not powered, and there is a significant potential risk in rashly connecting to them. Summary of the Invention

[0005] Therefore, it is necessary to provide a wireless charging method, a power bank, and a power-free charging device to address the aforementioned technical problems.

[0006] A wireless charging method, the method comprising:

[0007] Move to a charging station without power and acquire information from multiple sensors;

[0008] When the information from the multi-sensor sensors meets the preset conditions, a coupling signal with a first power is transmitted and the power supply area network is turned on, so that the powerless charging device receives the coupling signal, senses and generates a wake-up signal, and activates the wireless area network of the powerless charging device according to the wake-up signal.

[0009] When the power supply area network and the wireless area network are matched and connected, the powerless charging device is activated at the second power, and the bus is activated through area network communication to confirm the charging at the third power; wherein the first power, the second power and the third power increase sequentially.

[0010] In one embodiment, the multi-sensor information includes: vehicle location information, pile distance information, and pressure value information; it also includes: acquiring vehicle location information using a visual sensor, acquiring pile distance information using radar, and acquiring pressure value information through a pressure sensor; wherein, the pressure value information is obtained by collecting the pressure generated by the elastic deformation of the elastic component between the device and the non-electric charging device.

[0011] In one embodiment, the method further includes: generating a parking command when the vehicle location information, pile end distance information, and pressure value information meet preset conditions, and transmitting a coupling signal of first power after parking.

[0012] In one embodiment, the method further includes: activating the processor of the uncharged charging device according to the wake-up signal, and initiating a wireless local area network through the processor and performing a network search.

[0013] In one embodiment, the method further includes: when the power supply area network and the wireless area network are connected, generating matching feedback information by verifying the identification code of the power supply area network; receiving the matching feedback information and confirming successful matching, activating the control system of the powerless charging device at the second power level, so that the control system can check the connection information of the charging gun and communicate with the battery management system.

[0014] In one embodiment, the method further includes: establishing communication with the control system of the powerless charging device via a local area network, activating bus communication, and receiving a power request from the powerless charging device via the bus; and confirming a third power charge based on the power request.

[0015] A wireless charging method, the method comprising:

[0016] The coupled signal of the first power emitted by the sensor mobile power supply;

[0017] Based on the coupling signal, a wake-up signal is generated by the DC conversion device, and the wireless local area network is activated based on the wake-up signal.

[0018] Search for the power supply area network of the mobile power bank, and when the power supply area network and the wireless area network are matched and connected, activate the control system under the second power.

[0019] The bus is activated via regional network communication to confirm the third power charging; the first power, second power, and third power increase sequentially.

[0020] In one embodiment, the method further includes: activating the processor according to the wake-up signal, initiating a wireless local area network through the processor, and performing a network search.

[0021] In one embodiment, the method further includes: when the power supply area network and the wireless area network are connected, generating matching feedback information by verifying the identification code of the power supply area network; when the mobile terminal receives the matching feedback information and confirms successful matching, activating the control system at the second power level; and verifying the connection information of the charging gun and communicating with the battery management system through the control system.

[0022] In one embodiment, the method further includes: establishing communication between the control system and the mobile power supply via a local area network, activating bus communication, and receiving a power request from a powerless charging device via the bus; and confirming a third power charging based on the power request.

[0023] A portable power bank includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:

[0024] Move to a charging station without power and acquire information from multiple sensors;

[0025] When the information from the multi-sensor sensors meets the preset conditions, a coupling signal with a first power is transmitted and the power supply area network is turned on, so that the powerless charging device receives the coupling signal, senses and generates a wake-up signal, and activates the wireless area network of the powerless charging device according to the wake-up signal.

[0026] When the power supply area network and the wireless area network are matched and connected, the powerless charging device is activated at the second power, and the bus is activated through area network communication to confirm the charging at the third power; wherein the first power, the second power and the third power increase sequentially.

[0027] A power-free charging device has a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0028] The coupled signal of the first power emitted by the sensor mobile power supply;

[0029] Based on the coupling signal, a wake-up signal is generated by the DC conversion device, and the wireless local area network is activated based on the wake-up signal.

[0030] Search for the power supply area network of the mobile power bank, and when the power supply area network and the wireless area network are matched and connected, activate the control system under the second power.

[0031] The bus is activated via regional network communication to confirm the third power charging; the first power, second power, and third power increase sequentially.

[0032] In the aforementioned wireless charging method, power bank, and charging device without power, the power bank moves to the charging device without power in wireless charging mode and stops using information from multiple sensors. During the initial confirmation phase, coupling information at a first power level is transmitted. This first power level has a low power, resulting in a low-power wake-up signal, sufficient for self-testing and confirmation. After the power supply's local area network (LAN) and the wireless LAN are matched and connected, the power level increases to a second power level. This second power level has a higher power, sufficient for bus communication and charging gun checks. Once all these functions are successfully tested, the charging device without power can request a third power level from the power bank at the second power level. This three-stage power supply confirmation mechanism enables safe wireless charging. Attached Figure Description

[0033] Figure 1 This is a diagram illustrating an application scenario of a wireless charging method in one embodiment.

[0034] Figure 2 This is a flowchart illustrating a wireless charging method in one embodiment;

[0035] Figure 3 This is a flowchart illustrating the initial coupling phase in one embodiment;

[0036] Figure 4 This is a schematic diagram illustrating the wireless charging docking distance in one embodiment;

[0037] Figure 5 This is a flowchart illustrating the WiFi connection confirmation phase in one embodiment;

[0038] Figure 6 This is a schematic diagram of the overall charging connection confirmation process in one embodiment;

[0039] Figure 7 This is a flowchart illustrating a wireless charging method in another embodiment;

[0040] Figure 8 This is a diagram of the internal structure of a mobile power supply in one embodiment. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0042] The wireless charging method provided in this application can be applied to, for example... Figure 1In the application environment shown, the power bank 102 can wirelessly interface with the charging device 104, thereby enabling the power bank to supply power to the charging device. The power bank 102 can be, but is not limited to, various robots, unmanned vehicles, etc., with energy storage modules, and the charging device 104 includes a charging gun that can connect to a charging vehicle.

[0043] In practical use, the user terminal interacts with the power-free charging device. The user completes the plug-in operation as in traditional charging. After the power bank reaches the designated location, it verifies parking through multi-sensor information. Then, through the wireless charging method of this invention, after verification at each level, the power bank 102 supplies power to the power-free charging device 104, thereby achieving safe vehicle charging. Since the voltage changes step by step throughout the process, the safety of wireless charging is ensured.

[0044] In one embodiment, such as Figure 2 As shown, a wireless charging method is provided, which can be applied to... Figure 1 Taking a portable power bank as an example, the steps are as follows:

[0045] Step 202: Move to the charging device without power and acquire information from the multi-sensor system.

[0046] If the power bank can move autonomously, it can navigate to a charging station without power. If the power bank does not have autonomous movement capabilities, it can be moved manually or with the aid of other power sources to a charging station without power. There are no restrictions on this.

[0047] Multi-sensor information is collected through different sensors to confirm that the power bank has reached the designated location. Generally, sensors such as vision, position, radar (laser, millimeter wave, etc.), and pressure can be used to couple the power bank with the charging device when it is not in use.

[0048] Step 204: When the information from the multi-sensor sensors meets the preset conditions, a coupling signal with the first power is transmitted and the power supply area network is turned on, so that the powerless charging device receives the coupling signal, senses and generates a wake-up signal, and activates the wireless area network of the powerless charging device according to the wake-up signal.

[0049] In practical applications, the first power is generally set to 50-100W to enable the power bank to perform self-testing and to meet the requirements of activating the power supply's local area network. As for the coupling signal, the powerless charging device can also obtain a low-power wake-up signal through the coupling of the wireless coil and the converter to activate the basic functions of the powerless charging device and start the wireless local area network.

[0050] Since the initial power is relatively low, there are no safety hazards.

[0051] Step 206: When the power supply area network and the wireless area network are matched and connected, the powerless charging device is activated at the second power, and the bus is activated through area network communication to confirm the third power charging.

[0052] The matching connection between the power supply area network and the wireless area network essentially represents the matching between the charging device without power and the power bank. Based on the first power, the power can be further increased to a second power. Driven by the second power, the charging device without power can activate core functional components such as the control system to perform charging detection, interaction, etc.

[0053] After the above functions are completed, the connection between the two is basically finished. Therefore, when the charging device requests power through the bus, the second power is further increased to the third power. It is worth noting that the second power is generally set to 200-300W, while the third power is above 3KW.

[0054] In the aforementioned wireless charging method, in wireless charging mode, the power bank moves to the charging device without power and stops using information from multiple sensors. During the initial confirmation phase, coupling information at a first power level is transmitted. This first power level has a low power, resulting in a low-power wake-up signal, sufficient for self-testing and confirmation. After the power supply's local area network (LAN) and the wireless LAN are matched and connected, the power level increases to a second power level. This second power level has a higher power, sufficient for bus communication and charging gun checks. Once all these functions are successfully tested, the charging device without power can request a third power level from the power bank at the second power level. This three-stage power supply confirmation mechanism enables safe wireless charging.

[0055] In one embodiment, such as Figure 3 As shown, the portable power bank includes visual sensing, radar sensing, and pressure sensing to acquire vehicle location information, distance to the charging station, and pressure value information. When the portable power bank connects to a charging device without power, the vehicle location information is used to determine if the parking position is correct, the distance to the charging station is used to determine if the distance is acceptable, and the pressure value is used to determine if the pressure meets the requirements. All of the above information is determined by the portable power bank's central ECU. If all conditions are met, the portable power bank stops, and the central ECU issues a command to generate a coupling signal for the first power level.

[0056] It is worth noting that the pressure value information is obtained by collecting the pressure generated by the elastic deformation of the elastic component between the power bank and the charging device. There are several reasons for setting up the elastic component. The most direct reason is to collect the pressure value information. As the pressure value increases, the power bank will further increase the braking force to keep the pressure value within the qualified range. On the other hand, since there is a gap when the power bank and the charging device are coupled, setting up the elastic component can avoid the formation of the gap, thereby avoiding the safety hazards caused by foreign objects in the gap.

[0057] More specifically, the aforementioned multi-sensor setup can handle various working conditions. For example, visual perception has high requirements for light, radar accuracy drops sharply in the presence of obstacles, and pressure sensors cannot detect pressure without contact. However, by combining these sensors, at long distances, satellite navigation or towing can be used to reach the preset range. Once within the preset range, a combination of visual and radar methods can be used to approach from a distance. When the two make contact, pressure is generated due to the presence of elastic components. Therefore, with the multi-sensor setup, the power bank and the charging device can be offset by ±100mm in the left and right directions, ±100mm in the up and down directions, and the interval between them is ±40mm, as illustrated in the diagram. Figure 4 As shown.

[0058] In one embodiment, when the power supply area network and the wireless area network are connected, matching feedback information is generated by verifying the identification code of the power supply area network; upon receiving the matching feedback information and confirming successful matching, the control system of the powerless charging device is activated at the second power level, so that the control system can verify the connection information of the charging gun and communicate with the battery management system.

[0059] exist Figure 5 In the process, the mobile power supply segment transmits a coupling signal to couple the powerless charging device with the mobile power supply. Since the powerless charging device is equipped with a DC converter, a small voltage signal can be obtained from the coil induction. At this time, the contact sensor in the powerless charging device is activated and further confirms the position of the mobile power supply in preparation for subsequent power increase. After confirmation, the processor of the powerless charging device is activated, thereby opening the wireless local area network.

[0060] It is worth noting that while local area networks can be short-range networks such as WiFi or Bluetooth, this invention chooses WiFi, which allows for duty cycle control.

[0061] After the power supply area network and the wireless area network are connected, it is equivalent to the first confirmation. At this time, the power of the coil coupling is increased from the first power to the second power, and the power has been increased to 200-300W. The control system of the powerless charging device is activated, and the control system performs a self-test and communicates with the mobile power supply BMS system.

[0062] In one embodiment, communication with the control system of the powerless charging device is established via local area network communication, and bus communication is activated to receive power requests from the powerless charging device via the bus; based on the power requests, confirmation of third-power charging is performed.

[0063] like Figure 6 As shown, in general, during the initial confirmation, the ECU of the power bank was confirmed via WiFi transmission, and the transmitter was executed, achieving the transmission of the first power coupling signal. After the power bank establishes communication with the charging device without power, the power bank and the charging device without power subsequently communicate via the CAN bus to realize the power request from the BMS system and the response from the control system, thereby achieving power confirmation of the charging connection.

[0064] It should be understood that, although Figure 2 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 2 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0065] In one embodiment, such as Figure 7 As shown, another wireless charging method is provided, which can be applied to... Figure 1 Taking a portable power bank as an example, the steps are as follows:

[0066] Step 702: Sensing the coupling signal of the first power emitted by the mobile power source.

[0067] Step 704: Based on the coupled signal, a wake-up signal is generated by the DC conversion device, and the wireless local area network is started based on the wake-up signal.

[0068] Step 706: Search for the power supply local area network of the mobile power bank. When the power supply local area network and the wireless local area network are matched and connected, activate the control system under the second power.

[0069] Step 708: Activate the bus via local network communication to confirm the third power charging.

[0070] The first power, second power, and third power increase sequentially.

[0071] In one embodiment, the processor is activated based on a wake-up signal, and the processor initiates a wireless local area network and performs a network search.

[0072] In one embodiment, when the power supply area network and the wireless area network are connected, matching feedback information is generated by verifying the identification code of the power supply area network; when the mobile terminal receives the matching feedback information and confirms that the matching is successful, the control system is activated at the second power; the control system checks the connection information of the charging gun and communicates with the battery management system.

[0073] In one embodiment, communication between the control system and the mobile power supply is established via local area network communication, and bus communication is activated. Power requests from the powerless charging device are received via the bus, and confirmation of third-power charging is performed based on the power requests.

[0074] In one embodiment, a portable power bank is provided, the internal structure of which can be shown in the following diagram. Figure 8 As shown, the power bank includes a processor, internal memory, a network interface, and an input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements a wireless charging method.

[0075] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the mobile power supply to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0076] Similarly, for charging devices without power, it also includes at least Figure 8 The structure shown is shown.

[0077] In one embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the method described above.

[0078] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0079] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wireless charging method, characterized in that, The method includes: The vehicle is moved to a charging station without electricity and information from multiple sensors is acquired. This information includes vehicle location information, distance to the charging station, and pressure value information. The pressure value information is obtained by collecting the pressure generated by the elastic deformation of the elastic component between the vehicle and the charging station without electricity. When the information from the multi-sensor sensors meets the preset conditions, a coupling signal with a first power is transmitted and the power supply area network is turned on, so that the powerless charging device receives the coupling signal, senses and generates a wake-up signal, and activates the wireless area network of the powerless charging device according to the wake-up signal. When the power supply area network and the wireless area network are matched and connected, the powerless charging device is activated at the second power, and the bus is activated through area network communication to confirm the charging at the third power; wherein the first power, the second power and the third power increase sequentially.

2. The method according to claim 1, characterized in that, The acquisition of multi-sensor information includes: The system uses visual sensors to obtain vehicle location information, radar to obtain distance information to the pile end, and pressure sensors to obtain pressure value information.

3. The method according to claim 2, characterized in that, When the information from the multi-sensor sensors meets preset conditions, a coupling signal with a first power is transmitted, including: When the vehicle location information, pile distance information, and pressure value information meet the preset conditions, a parking command is generated, and a coupling signal with the first power is emitted after parking.

4. The method according to claim 1, characterized in that, Activating the wireless local area network of the powerless charging device according to the wake-up signal includes: The processor of the uncharged device is activated according to the wake-up signal, and the wireless local area network is started through the processor, and a network search is performed.

5. The method according to claim 4, characterized in that, When the power supply area network and the wireless area network are matched and connected, the power-free charging device is activated at the second power level, including: When the power supply area network and the wireless area network are connected, matching feedback information is generated by verifying the identification code of the power supply area network. Upon receiving the matching feedback information and confirming successful matching, the control system of the powerless charging device is activated at the second power level, so that the control system can verify the connection information of the charging gun and communicate with the battery management system.

6. The method according to claim 5, characterized in that, The bus is activated via local area network communication to confirm the third power charging, including: Establish communication with the control system of the powerless charging device through regional network communication, activate bus communication, and receive power requests from the powerless charging device through the bus. Confirmation of third-power charging based on the power request.

7. A wireless charging method, characterized in that, The method includes: The coupled signal of the first power emitted by the sensor mobile power supply; Based on the coupling signal, a wake-up signal is generated by the DC conversion device, and the wireless local area network is started based on the wake-up signal; based on the wake-up signal, the contact sensor is activated, and the location of the power bank is further confirmed. After confirmation, the processor is activated, thereby turning on the wireless local area network. Search for the power supply area network of the mobile power bank, and when the power supply area network and the wireless area network are matched and connected, activate the control system under the second power. The bus is activated via regional network communication to confirm the third power charging; the first power, second power, and third power increase sequentially.

8. The method according to claim 7, characterized in that, Activating the wireless local area network according to the wake-up signal includes: The processor is activated according to the wake-up signal, and the wireless local area network is started through the processor, and a network search is performed.

9. The method according to claim 8, characterized in that, When the power supply area network and the wireless area network are matched and connected, the control system is activated under the second power, including: When the power supply area network and the wireless area network are connected, matching feedback information is generated by verifying the identification code of the power supply area network. When the mobile terminal receives the matching feedback information and confirms that the matching is successful, the control system is activated at the second power level. The control system verifies the connection information of the charging gun and communicates with the battery management system.

10. The method according to claim 9, characterized in that, The bus is activated via local area network communication to confirm the third power charging, including: The system establishes communication between the control system and the mobile power supply via a regional network, activates bus communication, and receives power requests from the charging device without power via the bus. Confirmation of third-power charging based on the power request.

11. A portable power bank, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

12. A power-free charging device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 7 to 10.

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