Charging pile based on uwb digital key and reservation charging method thereof

Abstract

The application discloses a charging pile based on a UWB digital key and a reservation charging method thereof, the charging pile and a device terminal respectively communicate with a cloud device management platform through first and second network modules, the device terminal sends the reservation charging pile and reservation charging time period information to the cloud device management platform, the cloud device management platform stores and sends a user ID and a user key to the first encryption security module of the charging pile and sends the reservation charging time period information to the micro control unit of the charging pile, the cloud device management platform sends the charging pile ID and the charging pile key to the second encryption security module of the device terminal, the micro control unit of the charging pile and the central processing unit of the device terminal respectively control the first and second signal transceiver modules to start and stop checking and pairing the ID and the key of each other, and control the first and second UWB modules to start and stop charging pile positioning, so that the user can quickly find the charging pile for charging, the no-sensing authorization binding is realized, and the user's operation time outside the vehicle is reduced.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle charging technology, and in particular to a charging pile based on a UWB digital key and its scheduled charging method. Background Technology

[0002] With the increasing number of new energy vehicle users, user verification at public charging stations requires users to scan a code at the charging station, enter their user information, and then input a password on their mobile phone. This lack of seamless verification makes it difficult to achieve a truly user-friendly experience. In inclement weather conditions such as summer and winter, users often experience long waiting times outdoors. Furthermore, it's common to find available charging stations when remotely checking, only to discover upon arrival that all stations are occupied, preventing users from charging. If the public charging station is located underground or indoors, poor GPS signal in the vicinity can also hinder the location of the charging station, leading to delayed charging and a poor user experience. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention provides a charging pile based on UWB digital key and a method for reserving charging thereon. The charging pile based on UWB digital key enables users to reserve a charging pile and then authorize and bind it seamlessly, and can quickly locate the charging pile, satisfying users' needs for plug-and-charge charging.

[0004] The technical solution adopted by this invention to solve its technical problem is: a charging pile based on a UWB digital key, comprising a cloud-based device management platform, a charging pile, and a device terminal, wherein:

[0005] The charging station is equipped with a first signal transceiver module, a first UWB module, a first encryption security module, a first network module, a charging module, a charging gun, and a microcontroller unit.

[0006] The device terminal is equipped with a second signal transceiver module, a second UWB module, a second encryption security module, a second network module, and a central processing unit;

[0007] The charging pile communicates with the cloud device management platform through the first network module, and the device terminal communicates with the cloud device management platform through the second network module;

[0008] The device terminal can send reservation information, including the available charging pile and the reserved charging time, to the cloud device management platform through the APP. The cloud device management platform can generate a user key bound to the terminal device user ID and a charging pile key bound to the charging pile ID of the available charging pile according to the reservation time. The cloud device management platform can send the user ID and its bound user key to the first encryption security module of the charging pile for storage. The cloud device management platform can send the charging pile ID of the available charging pile and its bound charging pile key to the second encryption security module of the device terminal for storage. The cloud device management platform can also send the reserved charging time information to the microcontroller unit of the charging pile.

[0009] The microcontroller unit of the charging pile and the central processing unit of the device terminal can respectively control the start and stop of the first signal transceiver module and the second signal transceiver module according to the scheduled charging period. The first signal transceiver module and the second signal transceiver module can send and receive signals to each other within a set distance range. The charging pile and the device terminal respectively verify and pair the user ID and user key and the charging pile ID and charging pile key through the first signal transceiver module and the second signal transceiver module.

[0010] The first signal transceiver module and the second signal transceiver module respectively transmit the verification pairing information to the microcontroller unit and the central processing unit. The microcontroller unit and the central processing unit control the start and stop of the first UWB module and the second UWB module according to the verification information. The first UWB module can send UWB signals outward, and the second UWB module can receive the UWB signals sent by the first UWB module and calculate the position coordinate information of the first UWB module.

[0011] The charging gun can be inserted into the charging port of the car to be charged, and the microcontroller unit can control the charging module to supply power to the charging gun.

[0012] As a further improvement of the present invention, the reservation information sent by the device terminal to the cloud device management platform via the APP also includes vehicle information and user information. The cloud device management platform can send the vehicle information and user information to the microcontroller unit of the charging pile. The charging gun is equipped with a vehicle and user information detection module. When the charging gun is inserted into the charging port of the vehicle to be charged, it can detect the vehicle information and user information of the vehicle to be charged. The vehicle and user information detection module on the charging gun is electrically connected to the microcontroller unit to communicate and transmit detection information. The microcontroller unit can compare the vehicle information and user information detected by the vehicle and user information detection module on the charging gun with the vehicle information and user information sent by the cloud device management platform. The microcontroller unit controls the charging module to start and stop power supply according to the comparison result.

[0013] As a further improvement of the present invention, both the first signal transceiver module and the second signal transceiver module are Bluetooth modules.

[0014] As a further improvement of the present invention, the charging module can feed back the charging amount data to the microcontroller unit. The microcontroller unit transmits the total charging amount data to the cloud device management platform through the first network module. The cloud device management platform can deduct the user's fee based on the total charging amount data and send an unbinding command to the charging pile and device terminal to release the reserved charging time slot.

[0015] As a further improvement of the present invention, the first network module and the second network module are wireless networks.

[0016] As a further improvement of the present invention, the charging pile is also provided with a display screen for displaying the user ID.

[0017] A method for reserving charging at a charging station based on a UWB digital key includes the following steps:

[0018] Step 1: The user selects the available charging station and the scheduled charging time on the device terminal's APP. The device terminal then sends the reservation information to the cloud-based device management platform through the second network module.

[0019] Step 2: The cloud-based device management platform binds the reservation time slot of the reservable charging pile to the device terminal, generates a user key corresponding to the reservation time slot for the user ID of the device terminal, and generates a charging pile key corresponding to the reservation time slot for the charging pile ID of the reservable charging pile.

[0020] Step 3: The cloud-based device management platform sends the user ID and user key of the device terminal to the charging pile, which is then stored by the charging pile's first encryption security module; the cloud-based device management platform sends the charging pile ID and charging pile key of the reservable charging pile to the device terminal, which is then stored by the device terminal's second encryption security module.

[0021] Step 4: After the scheduled charging time arrives, the charging pile activates the first signal transceiver module to broadcast and wait for users to pair up.

[0022] Step 5: After the user drives and brings the device terminal to the vicinity of the reservable charging station, the device terminal and the reservable charging station verify each other's ID and key, and then pair the first signal transceiver module and the second signal transceiver module.

[0023] Step Six: After the first and second signal transceiver modules are successfully paired, the user ID will be displayed on the charging pile's screen, prompting the user to directly take the charging gun for charging.

[0024] Step 7: The charging pile and the device terminal simultaneously activate the first UWB module and the second UWB module to pair and connect. After the connection is successful, the user can view the distance and location between the device terminal and the charging pile in real time on the device terminal and accurately find the reserved charging pile.

[0025] Step 8: After finding the reserved charging station, the user confirms the user ID displayed on the charging station's screen. Once confirmed, the user takes the charging gun and inserts it into the electric vehicle's charging port.

[0026] Step 9: The vehicle and user information detection module on the charging gun starts detecting vehicle and user information. The microcontroller unit can compare the vehicle and user information detected by the vehicle and user information detection module on the charging gun with the vehicle and user information sent by the cloud device management platform. After verification, the charging module is started to charge.

[0027] Step 10: After charging is completed, the cloud-based device management platform updates the user information by deducting fees. At the same time, the cloud-based device management platform sends unbinding instructions to the charging pile and the device terminal respectively to unbind the user from the charging pile and release the reserved charging time slot.

[0028] The beneficial effects of this invention are as follows: This invention enables wireless communication between the device terminal and the charging pile with a cloud-based device management platform. The device terminal reserves charging time slots for available charging piles, and the cloud-based device management platform binds the device terminal to the charging pile during the reserved time slot. When the vehicle arrives at a public charging location, ID pairing and key verification are broadcast via Bluetooth, achieving seamless authorization binding between the device terminal and the charging pile. This avoids the need for users to scan codes and perform a series of verification operations after getting out of the car, saving users' time outside the vehicle. Furthermore, upon arrival at a public charging location, both the terminal device and the charging pile automatically activate their UWB modules to locate the mobile terminal and the reserved charging pile. This invention enables users to quickly and accurately locate their reserved charging stations. During charging, users simply insert the charging gun into their car's charging port. The charging gun automatically identifies the car and user information and begins charging, preventing accidental charging due to discrepancies between the car and the user's vehicle. The invention achieves seamless authorization and binding after a user reserves a charging station, and quickly and accurately locates the charging station. This avoids situations where users arrive at a public charging location but cannot find a suitable charging station, leading to charging failure. It also eliminates the need for users to spend a long time scanning codes outside the car, providing a convenient and quick charging experience where users can simply pick up the charging gun and start charging immediately upon exiting the vehicle. This makes charging new energy vehicles more convenient and faster at public charging locations. Attached Figure Description

[0029] Figure 1 This is a communication status diagram between the charging pile and equipment terminal and the cloud-based equipment management platform of the present invention;

[0030] Figure 2 This is a schematic diagram illustrating the communication principle of the present invention;

[0031] Figure 3 This is a flowchart illustrating the scheduled charging process of the present invention. Detailed Implementation

[0032] Example: A charging pile based on a UWB digital key includes a cloud-based device management platform 1, a charging pile 2, and a device terminal 3, wherein:

[0033] The charging pile 2 is equipped with a first signal transceiver module 21, a first UWB module 22, a first encryption security module 23, a first network module 24, a charging module 25, a charging gun 27, and a microcontroller unit 26.

[0034] The device terminal 3 is equipped with a second signal transceiver module 31, a second UWB module 32, a second encryption security module 33, a second network module 34, and a central processing unit 35;

[0035] The charging pile 2 communicates with the cloud device management platform 1 through the first network module 24, and the device terminal 3 communicates with the cloud device management platform 1 through the second network module 34.

[0036] The device terminal 3 can send reservation information, including the reservable charging pile 2 and the reserved charging time period, to the cloud device management platform 1 through the APP. The cloud device management platform 1 can generate a user key bound to the terminal device user ID and a charging pile 2 key bound to the charging pile 2 ID of the reservable charging pile 2 according to the reservation time period. The cloud device management platform 1 can send the user ID and its bound user key to the first encryption security module 23 of the charging pile 2 for storage. The cloud device management platform 1 can send the charging pile 2 ID of the reservable charging pile 2 and its bound charging pile 2 key to the second encryption security module 33 of the device terminal 3 for storage. The cloud device management platform 1 can also send the reserved charging time period information to the microcontroller unit 26 of the charging pile 2.

[0037] The microcontroller unit 26 of the charging pile 2 and the central processing unit 35 of the device terminal 3 can respectively control the start and stop of the first signal transceiver module 21 and the second signal transceiver module 31 according to the scheduled charging period. The first signal transceiver module 21 and the second signal transceiver module 31 can respectively send and receive signals to each other within a set distance range. The charging pile 2 and the device terminal 3 respectively verify and pair the user ID and user key and the charging pile 2 ID and charging pile 2 key through the first signal transceiver module 21 and the second signal transceiver module 31.

[0038] The first signal transceiver module 21 and the second signal transceiver module 31 respectively transmit the verification pairing information to the microcontroller unit 26 and the central processing unit 35. The microcontroller unit 26 and the central processing unit 35 control the start and stop of the first UWB module 22 and the second UWB module 32 according to the verification information. The first UWB module 22 can send UWB signals outward, and the second UWB module 32 can receive the UWB signals sent by the first UWB module 22 and calculate the position coordinate information of the first UWB module 22.

[0039] The charging gun 27 can be inserted into the charging interface of the car to be charged, and the microcontroller unit 26 can control the charging module 25 to supply power to the charging gun 27.

[0040] The user views available charging stations 2 in nearby public charging locations on the device terminal 3. After selecting the charging station 2 and the reserved charging time slot, the device terminal 3 sends the reserved charging station 2 and the reserved charging information to the cloud device management platform 1. The cloud device management platform 1 pairs the device terminal 3 and the charging station 2, and authorizes and binds them through their respective IDs and keys. This ensures that the charging station 2 cannot charge other users during the reserved time slot, preventing the reserved charging station 2 from being occupied when the user arrives at the public charging location. Upon arrival at the public charging location, the first signal transceiver module 21 and the second signal transceiver module 31 connect the device terminal 3 and the charging station. The ID and key verification pairing authorization of charging pile 2 eliminates the need for users to get out of the car to scan a code, enabling seamless authorization and binding. Simultaneously, charging pile 2 and device terminal 3 activate their UWB modules for precise positioning, allowing users to quickly and accurately locate their reserved charging pile 2. This is useful in public charging locations, eliminating the need for GPS to accurately locate the charging pile 2, avoiding situations where poor GPS signals underground or indoors prevent quick location of the charging pile 2. Once the user arrives at the reserved charging pile parking location, they can directly lift the charging gun 27 to plug in and start charging. This convenient and time-saving method effectively reduces the time users spend outside the vehicle and significantly improves the user's charging experience.

[0041] The reservation information sent by the device terminal 3 to the cloud device management platform 1 via the APP also includes vehicle information and user information. The cloud device management platform 1 can send the vehicle information and user information to the microcontroller unit 26 of the charging pile 2. The charging gun 27 is equipped with a vehicle and user information detection module. When the charging gun 27 is inserted into the charging port of the vehicle to be charged, it can detect the vehicle information and user information of the vehicle to be charged. The vehicle and user information detection module on the charging gun 27 is electrically connected to the microcontroller unit 26 to communicate and transmit detection information. The microcontroller unit 26 can compare the vehicle information and user information detected by the vehicle and user information detection module on the charging gun 27 with the vehicle information and user information sent by the cloud device management platform 1. The microcontroller unit 26 controls the charging module 25 to start and stop power supply according to the comparison result.

[0042] When a user lifts the charging gun 27 to charge the car, the charging gun 27 automatically detects the car information and user information inserted into the charging port. Only when the detected car information and user information match the car information and user information sent by the cloud device management platform 1 will the charging module 25 start charging the car. If the above information is inconsistent, the charging module 25 will not start charging, which can effectively prevent other users from arriving at the charging station 2 before the scheduled user to charge, thus preventing accidental charging and fully protecting the user's rights.

[0043] Both the first signal transceiver module 21 and the second signal transceiver module 31 are Bluetooth modules.

[0044] The charging module 25 can feed back charging data to the microcontroller unit 26. The microcontroller unit 26 transmits the total charging data to the cloud device management platform 1 through the first network module 24. The cloud device management platform 1 can deduct fees from the user based on the total charging data and send unbinding instructions to the charging pile 2 and the device terminal 3 to release the reserved time slot of the charging pile 2. The charging module 25 of the charging pile 2 automatically calculates the charging amount, and the microcontroller unit 26 sends the total charging amount of the vehicle to the cloud device management platform 1, so that the cloud device management platform 1 can automatically and accurately deduct fees from the user based on the charging amount, without the need for the user to make payment, and the deducted amount is accurate.

[0045] The first network module 24 and the second network module 34 are wireless networks.

[0046] The charging pile 2 is also equipped with a display screen for displaying the user ID.

[0047] A method for reserving charging at a charging station based on a UWB digital key includes the following steps:

[0048] Step 1: The user selects the available charging pile 2 and the scheduled charging time on the APP of the device terminal 3. The device terminal 3 sends the above reservation information to the cloud device management platform 1 through the second network module 34.

[0049] Step 2: The cloud-based device management platform 1 binds the reservation time slot of the reservable charging pile 2 to the device terminal 3, generates a user key corresponding to the reservation time slot for the user ID of the device terminal 3, and generates a charging pile 2 key corresponding to the reservation time slot for the charging pile 2 ID of the reservable charging pile 2.

[0050] Step 3: The cloud device management platform 1 sends the user ID and user key of the device terminal 3 to the charging pile 2, and the charging pile 2's first encryption security module 23 stores them; the cloud device management platform 1 sends the charging pile 2 ID and charging pile 2 key that can be reserved to the device terminal 3, and the device terminal 3's second encryption security module 33 stores them.

[0051] Step 4: After the scheduled charging time arrives, charging pile 2 will activate the first signal transceiver module 21 to broadcast and wait for user pairing.

[0052] Step 5: After the user drives and carries the device terminal 3 to the vicinity of the reservable charging pile 2, the device terminal 3 and the reservable charging pile 2 verify each other's ID and key, and then pair the first signal transceiver module 21 and the second signal transceiver module 31.

[0053] Step Six: After the first signal transceiver module 21 and the second signal transceiver module 31 are successfully paired, the user ID is displayed on the screen of the charging pile 2, prompting the user to directly take out the charging gun for charging;

[0054] Step 7: The charging pile 2 and the device terminal 3 simultaneously start the first UWB module 22 and the second UWB module 32 to pair and connect. After the connection is successful, the user can view the distance and location between the device terminal 3 and the charging pile 2 in real time on the device terminal 3 and accurately find the reserved charging pile 2.

[0055] Step 8: After the user finds the reserved charging station 2, confirms the user ID displayed on the display screen of charging station 2. After confirming that it is correct, the user takes the charging gun 27 and inserts it into the charging interface of the electric vehicle.

[0056] Step 9: The vehicle and user information detection module on the charging gun 27 begins to detect vehicle and user information. The microcontroller unit 26 can compare the vehicle and user information detected by the vehicle and user information detection module on the charging gun 27 with the vehicle and user information sent by the cloud device management platform 1. After verification, the charging module 25 is started to charge.

[0057] Step 10: After charging is completed, the cloud device management platform 1 updates the user information by deducting fees. At the same time, the cloud device management platform 1 sends unbinding instructions to the charging pile 2 and the device terminal 3 respectively to unbind the user from the charging pile 2 and release the reserved time slot of the charging pile 2.

Claims

1. A UWB digital key based charging pile, characterized in that: The application relates to a cloud device management platform (1), a charging pile (2) and a device terminal (3), wherein: The charging pile is internally provided with a first signal transceiver module (21), a first UWB module (22), a first encryption security module (23), a first network module (24), a charging module (25), a charging gun (27) and a micro control unit (26); The device terminal is provided with a second signal transceiver module (31), a second UWB module (32), a second encryption security module (33), a second network module (34) and a central processing unit (35); The charging pile communicates with the cloud device management platform through the first network module, and the device terminal communicates with the cloud device management platform through the second network module; The device terminal can send reservation information including a pre-bookable charging pile and a pre-booked charging period to the cloud device management platform through an APP, the cloud device management platform can generate a user key bound with a terminal device user ID and a charging pile key bound with a charging pile ID of the pre-bookable charging pile according to the pre-booked charging period, the cloud device management platform can send the user ID and the bound user key to the first encryption security module of the charging pile for storage, the cloud device management platform can send the charging pile ID of the pre-bookable charging pile and the bound charging pile key to the second encryption security module of the device terminal for storage, and the cloud device management platform can also send the pre-booked charging period information to the micro control unit of the charging pile; The micro control unit of the charging pile and the central processing unit of the device terminal can respectively control the first signal transceiver module and the second signal transceiver module to start and stop according to the pre-booked charging period, the first signal transceiver module and the second signal transceiver module can respectively transceive signals within a set distance range, and the charging pile and the device terminal respectively verify and pair the user ID and the user key and the charging pile ID and the charging pile key through the first signal transceiver module and the second signal transceiver module; The first signal transceiver module and the second signal transceiver module respectively transmit the verification and pairing information to the micro control unit and the central processing unit, the micro control unit and the central processing unit respectively control the first UWB module and the second UWB module to start and stop according to the verification information, the first UWB module can send UWB signals outward, the second UWB module can receive the UWB signals sent by the first UWB module and calculate the position coordinate information of the first UWB module, and the charging pile and the device terminal start the UWB modules to perform accurate positioning; The charging pile is also provided with a display screen for displaying the user ID, the user confirms the user ID displayed on the display screen of the charging pile after finding the pre-booked charging pile, the charging gun can be inserted into a charging interface of a vehicle to be charged, and the micro control unit can control the charging module to supply power to the charging gun.

2. The UWB digital key based charging pile of claim 1, wherein: The reservation information sent by the device terminal to the cloud device management platform through the APP further includes automobile information and user information, and the cloud device management platform can send the automobile information and the user information to the micro control unit of the charging pile. The charging gun is provided with an automobile and user information detection module, and the automobile information and the user information of the to-be-charged automobile can be detected when the charging gun is inserted into the charging port of the to-be-charged automobile. The automobile and user information detection module on the charging gun is in electrical connection with the micro control unit for communication transmission of detection information. The micro control unit can compare the automobile information and the user information detected by the automobile and user information detection module on the charging gun with the automobile information and the user information sent by the cloud device management platform, and control the charging module to start or stop power supply according to the comparison result.

3. The UWB digital key based charging pile of claim 2, wherein: The first signal transceiver module and the second signal transceiver module are both Bluetooth modules.

4. The UWB digital key based charging pile of claim 1, wherein: The charging module can feed back the charging amount data to the micro control unit, the micro control unit transmits the total charging amount data to the cloud device management platform through the first network module, and the cloud device management platform can charge the user according to the total charging amount data and issue an unbinding instruction to the charging pile and the device terminal to release the charging pile reservation period.

5. The UWB digital key based charging pile of claim 1, wherein: The first network module and the second network module are wireless networks.

6. The method of reserving charging of the UWB digital key-based charging pile according to claim 1, characterized in that: The method comprises the following steps: Step one: the user selects a chargeable charging pile and a reservation charging period on the APP of the device terminal, and the device terminal sends the above reservation information to the cloud device management platform through the second network module; Step two: the cloud device management platform binds the reservation period of the chargeable charging pile with the device terminal, generates a user key corresponding to the reservation period for the user ID of the device terminal, and generates a charging pile key corresponding to the reservation period for the charging pile ID of the chargeable charging pile; Step three: the cloud device management platform issues the user ID and the user key of the device terminal to the charging pile and stores them by the first encrypted security module of the charging pile, and issues the charging pile ID and the charging pile key of the chargeable charging pile to the device terminal and stores them by the second encrypted security module of the device terminal; Step four: after the reservation charging period arrives, the charging pile starts the first signal transceiver module to broadcast and waits for the user to pair; Step five: after the user drives the device terminal to the vicinity of the chargeable charging pile, the device terminal and the chargeable charging pile verify the ID and the key with each other and then pair the first signal transceiver module and the second signal transceiver module; Step six: after the first signal transceiver module and the second signal transceiver module are successfully paired, the user ID is displayed on the display screen of the charging pile, prompting the user to directly take the gun to charge; Step seven: the charging pile and the device terminal simultaneously start the first UWB module and the second UWB module to pair and connect, after the connection is successful, the user can real-time view the distance and the direction between the device terminal and the charging pile on the device terminal, and accurately find the reserved charging pile; Step eight: after the user finds the reserved charging pile, the user confirms the user ID displayed on the display screen of the charging pile, and after confirming that the user ID is correct, the user takes the charging gun and inserts it into the charging interface of the electric automobile. Step nine: the car and user information detection module on the charging gun starts to detect the car information and user information, and the micro control unit can compare the car information and user information detected by the car and user information detection module on the charging gun with the car information and user information sent by the cloud device management platform, and start the charging module for charging after verification; Step ten: after charging is completed, the cloud device management platform updates the user information for deduction, and simultaneously, the cloud device management platform respectively issues the charging pile and the device terminal unbinding instructions to the charging pile and the device terminal to realize user and charging pile unbinding and release the charging pile reservation period.

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