Charging pile system based on Bluetooth technology

Abstract

The invention relates to the technical field of charging piles, in particular to a charging pile system based on the Bluetooth technology. Comprising a Bluetooth beacon and a charging pile, and the Bluetooth beacon is a device for transmitting Bluetooth beacon information; the charging pile comprises a charging pile master controller, a charging gun and a display screen, the charging pile master controller comprises an MCU, a Bluetooth module and a control guide module, the Bluetooth module and the control guide module communicate with the MCU, and the Bluetooth module receives Bluetooth beacon information sent by the Bluetooth beacon and performs information interaction with the MCU; the control guide module receives an instruction of the MCU to control the charging gun to be turned on or turned off; the charging pile is further provided with a display screen, and the display screen receives instructions of the MCU. The charging pile is provided with the Bluetooth module, the Bluetooth beacon information is recognized through the Bluetooth module, when the vehicle is automatically recognized to be nearby, the charging pile is started for plug-and-play charging, and an additional APP does not need to be downloaded or a card swiping means does not need to be used for charging.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a charging pile system based on Bluetooth technology. Background Art

[0002] At present, new energy electric vehicles are usually sold with matching home charging piles, and charging is usually started by APP or card swiping. This method is complicated to operate, and the mobile signal in some underground garages is poor, which will cause the APP to be unusable, affecting the user experience. Therefore, it is necessary to provide a charging system that does not require APP or card swiping. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a charging system that does not require an APP or a card.

[0004] In order to solve the above problems, the present invention proposes a charging pile system based on Bluetooth technology, including a Bluetooth beacon and a charging pile, the Bluetooth beacon is a device that transmits Bluetooth beacon information; the charging pile includes a charging pile main control, a charging gun and a display screen, the charging pile main control includes an MCU, a Bluetooth module and a control guidance module, the Bluetooth module and the control guidance module both communicate with the MCU, the Bluetooth module receives the Bluetooth beacon information sent by the Bluetooth beacon and exchanges information with the MCU, the control guidance module receives the instructions of the MCU to control the turning on or off of the charging gun; the charging pile is also provided with a display screen, and the display screen receives the instructions of the MCU.

[0005] Preferably, the Bluetooth module adopts BLE low-power Bluetooth.

[0006] Preferably, the Bluetooth beacon is an independent device or the Bluetooth beacon is integrated in the car. The Bluetooth beacon device is provided with two control buttons, a switch button and a stop charging button. The switch button supports turning on and off the Bluetooth beacon information, and the stop charging button can control whether charging is stopped.

[0007] A method for using a charging pile system based on Bluetooth technology comprises the following steps:

[0008] Step 1: When the electric vehicle is delivered, complete the binding of the Bluetooth beacon device and the charging pile. The binding content is the Bluetooth beacon device number and the charging pile serial number;

[0009] Step 2: After the Bluetooth module in the charging pile detects the Bluetooth beacon information, it reports the beacon information to the MCU through UART;

[0010] Step 3: The MCU identifies the reported beacon information and confirms that it is the Bluetooth beacon bound to it; the current Bluetooth beacon position is calculated through RSSI. When the current Bluetooth beacon position is less than or equal to the specified distance from the charging pile, the charging pile enters the plug-and-charge mode;

[0011] Step 4: At the same time, the MCU sends a signal to the display screen, and the main control MCU controls the display screen to enter the welcome mode, and the display screen prompts a welcome message; after the MCU detects that the charging gun is connected to the electric vehicle, it starts charging through the control guidance module;

[0012] Step 5: After charging is completed, the MCU controls the charging gun to end charging; if charging is not completed and needs to be manually interrupted, press the stop charging button on the Bluetooth beacon device, and the MCU receives the stop charging signal and ends charging through the control guidance module.

[0013] Preferably, the Bluetooth beacon information in step 2 adopts Apple's iBeacon standard, including Preamble, Access Address and PDU; wherein PDU includes Header, AdvertiserAddress and Data; the information in Data is received by the Bluetooth module and transferred to the MCU, and Data includes iBeacon Prefix, Proximity UUID, Major, Minor and TXpower.

[0014] Preferably, the Proximity UUID setting content is the charging pile serial number, the Major setting content is the Bluetooth beacon device number, and the Minor setting is the charging stop flag, 0 indicates normal charging, and 1 indicates stopping charging.

[0015] The beneficial effects of the present invention are as follows: 1. The charging pile is installed with a Bluetooth module, which recognizes Bluetooth beacon information through the Bluetooth module. When the vehicle is automatically identified nearby, the charging pile is turned on for plug-and-play charging without the need to download an additional APP or use a card to charge.

[0016] 2. Plug and charge, reducing user operation steps and improving charging experience.

[0017] 3. High scalability, can be linked to ground locks and welcome systems, etc.

[0018] 4. Diversified implementation methods: Bluetooth beacon devices can be stand-alone products or integrated into vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the operation logic diagram of the system of the present invention;

[0020] Figure 2 It is a schematic diagram of the system structure of the present invention;

[0021] Figure 3 It is a working flow diagram of a Bluetooth beacon device involved in the present invention;

[0022] Figure 4 It is a schematic diagram of the Bluetooth beacon broadcast packet involved in the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0024] The present invention provides a charging pile system based on Bluetooth technology, which mainly includes a Bluetooth beacon and a charging pile, wherein the Bluetooth beacon is a device for transmitting Bluetooth signals; the charging pile includes a charging pile master control, a charging gun and a display screen, wherein the charging gun is connected to an electric vehicle for charging, the charging pile master control includes an MCU, a Bluetooth module and a control guidance module, wherein both the Bluetooth module and the control guidance module communicate with the MCU, the Bluetooth module receives the Bluetooth signal sent by the Bluetooth beacon and exchanges information with the MCU, the control guidance module receives the MCU instruction to control the opening or closing of the charging gun, the display screen receives the instruction of the MCU, and the welcome system has an LED light in addition to the display screen, and the LED light is arranged above the display screen, and the owner of the charging pile can be prompted by the LED light or the display screen that the Bluetooth beacon has been scanned and entered the plug-and-charge mode. The Bluetooth module adopts BLE low-power Bluetooth, and the Bluetooth beacon can be an independent product or can be integrated into a vehicle. If the Bluetooth beacon is an independent device, it can be powered by a battery or by a vehicle.

[0025] When using, first complete the binding of the Bluetooth beacon device and the charging pile when the electric vehicle is delivered. When the Bluetooth beacon device is an independent device, one charging pile can bind multiple Bluetooth beacon devices; when the Bluetooth beacon device is integrated into the vehicle, one charging pile can only bind one Bluetooth beacon device. The Bluetooth beacon device sends Bluetooth signals in real time, and the Bluetooth module in the charging pile detects the Bluetooth signal. The Bluetooth module sends the signal of the vehicle approaching to the MCU. The MCU controls the guidance module to enable the charging gun to start plug-and-play charging. The user plugs in the gun and starts charging directly.

[0026] The Bluetooth beacon format adopts Apple's iBeacon standard, as shown in the table below. Different from the traditional iBeacon definition, the iBeacon content of the present invention is set as follows:

[0027]

[0028] The traditional iBeacon is defined as follows:

[0029] name size illustrate Proximity UUID 16 bytes Identifier of the manufacturer or company Major 2 bytes Device group number Minor 2 bytes Individual iBeacon device ID in the group Tx Power 1 byte Transmitting power RSSI value at 1 meter

[0030] From the above two tables, it can be seen that the iBeacon content settings of the present invention are different from the conventional settings. The present invention sets the Proximity UUID to the charging pile serial number, sets the Major to the Bluetooth beacon device number, and sets the Minor to the charging stop flag (where 0 means normal charging; 1 means stop charging). The charging pile serial number and the matching Bluetooth beacon device number are bound during delivery, and the iBeacon data of the Bluetooth beacon device when it leaves the factory is set as shown above, where the charging stop flag is 0, and 1 means normal charging.

[0031] The Bluetooth beacon device is equipped with two control buttons, namely the switch button and the stop charging button. The switch button supports turning on and off the Bluetooth beacon broadcast, and the stop charging button can control whether charging is stopped. The independent Bluetooth beacon device uses indicator lights to indicate the current working status. The indicator lights include four states: green light is always on, green light is flashing, red light is always on, and red light is flashing. If integrated into the vehicle system, the working status is displayed through the vehicle interactive UI. Figure 3 As shown, the switch button of the Bluetooth beacon device is normally open by default, and the normally open state is displayed as a green light that is always on. If the green light is always on, the Bluetooth beacon device and the charging pile can communicate normally; if the switch button is pressed, the Bluetooth beacon broadcast is turned off, and the beacon broadcast is turned off and the red light is always on. At this time, the Bluetooth beacon device and the charging pile do not communicate; during the charging process, the stop charging button is normally turned on and Minor is displayed as 0, indicating normal charging; if the stop charging button is pressed, the green light is always on and the green light flashes, and Minor becomes 1 to send a stop charging signal. The charging pile stops charging after receiving the stop charging signal. After the charging pile is removed, the stop charging button needs to be turned on before the next charging, and the Bluetooth beacon indicator light changes from flashing green light to a green light that is always on. Regardless of whether the Bluetooth beacon is in a green light flashing, green light that is always on, or red light that is always on, it can detect in real time whether the device power is too low. If the Bluetooth beacon device power is too low, the indicator light changes from one of the above three states to a flashing red light, that is, when the red light flashes, the user needs to charge the Bluetooth beacon device or replace the power supply.

[0032] After the Bluetooth module in the charging pile detects the Bluetooth beacon information, it reports the beacon information to the MCU through UART.

[0033] The MCU identifies the reported beacon information, confirms that it is the Bluetooth beacon bound to it, and calculates the current Bluetooth beacon position through RSSI. When the current Bluetooth beacon position is less than or equal to the specified distance from the charging pile, the charging pile enters the plug-and-charge mode.

[0034] At the same time, the MCU gives a signal to the display screen, and the main MCU controls the display screen to enter the welcome mode. The display screen prompts a welcome message, and the display screen can also be replaced with indicator lights.

[0035] After the MCU detects that the charging gun is connected to the electric vehicle, it starts charging through the control guidance module.

[0036] After charging is completed, the MCU controls the charging gun to end charging; if charging is not completed and needs to be interrupted manually, press the stop charging button on the Bluetooth beacon device, and the MCU receives the stop charging signal and ends charging through the control guidance module.

[0037] In the scenario of using ground locks, the ground locks can be linked through Bluetooth beacons. When the Bluetooth beacon is detected approaching, the ground lock will automatically lock. The Bluetooth beacon device uses BLE Bluetooth, which has the characteristics of low cost and low power consumption. Independent Bluetooth beacon devices can be powered by batteries and can work for more than 5 years.

[0038] iBeacon Bluetooth beacon information such as Figure 4 As shown in the figure, the fixed value of Preamble is 01010101b; the fixed value of AccessAddress is 0x8E89BED6; PDU can be divided into three parts: Header, AdvertiserAddress and Data; Header contains relevant information such as broadcast type; AdvertiserAddress contains the address of the broadcaster, which is divided into public address and private address; Data is the real useful information broadcasted, which is received by the Bluetooth module and transferred to the MCU. This part of information cannot exceed 31 bytes, mainly including iBeacon Prefix, Proximity UUID, Major, Minor and TX power, among which iBeacon Prefix is ​​fixed to 0x4C000215.

Claims

1. A charging pile system based on Bluetooth technology, characterized by: It includes a Bluetooth beacon and a charging pile. The Bluetooth beacon is a device that transmits Bluetooth beacon information; the charging pile includes a charging pile main control, a charging gun and a display screen. The charging pile main control includes an MCU, a Bluetooth module and a control guidance module. Both the Bluetooth module and the control guidance module communicate with the MCU. The Bluetooth module receives the Bluetooth beacon information sent by the Bluetooth beacon and interacts with the MCU. The control guidance module receives instructions from the MCU to control the charging gun to be turned on or off; the charging pile is also provided with a display screen, which receives instructions from the MCU.

2. The charging pile system based on Bluetooth technology as claimed in claim 1, characterized in that: The Bluetooth module uses BLE low-power Bluetooth.

3. The charging pile system based on Bluetooth technology as claimed in claim 2, characterized in that: The Bluetooth beacon is an independent device or a Bluetooth beacon integrated in the car. The Bluetooth beacon device is provided with two control buttons, namely a switch button and a stop charging button. The switch button supports turning on and off the Bluetooth beacon information, and the stop charging button can control whether charging is stopped.

4. A method for using a charging pile system based on Bluetooth technology, characterized in that: The steps include: Step 1: When the electric vehicle is delivered, complete the binding of the Bluetooth beacon device and the charging pile. The binding content is the Bluetooth beacon device number and the charging pile serial number; Step 2: After the Bluetooth module in the charging pile detects the Bluetooth beacon information, it reports the beacon information to the MCU through UART; Step 3: The MCU identifies the reported beacon information and confirms that it is the Bluetooth beacon bound to it; the current Bluetooth beacon position is calculated through RSSI. When the current Bluetooth beacon position is less than or equal to the specified distance from the charging pile, the charging pile enters the plug-and-charge mode; Step 4: At the same time, the MCU sends a signal to the display screen, and the main control MCU controls the display screen to enter the welcome mode, and the display screen prompts a welcome message; after the MCU detects that the charging gun is connected to the electric vehicle, it starts charging through the control guidance module; Step 5: After charging is completed, the MCU controls the charging gun to end charging; if charging is not completed and needs to be manually interrupted, press the stop charging button on the Bluetooth beacon device, and the MCU receives the stop charging signal and ends charging through the control guidance module.

5. The method for using the charging pile system based on Bluetooth technology as claimed in claim 4, characterized in that: The Bluetooth beacon information in step 2 adopts Apple's iBeacon standard, including Preamble, Access Address and PDU; PDU includes Header, AdvertiserAddress and Data; the information in Data is received by the Bluetooth module and transferred to the MCU. Data includes iBeacon Prefix, Proximity UUID, Major, Minor and TX power.

6. The method for using the charging pile system based on Bluetooth technology as claimed in claim 5, characterized in that: The Proximity UUID setting is the serial number of the charging pile, the Major setting is the Bluetooth beacon device number, and the Minor setting is the charging stop flag. 0 indicates normal charging, and 1 indicates stopping charging.

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