CN107627896A - A kind of automobile wireless charging system - Google Patents

Abstract

The invention discloses a kind of automobile wireless charging system, including the support platform being arranged in depressed part (1) and the transmitting coil (14) being arranged in support platform；Described support platform includes underlying activities platform (2), upper strata movable platform (16) and connection underlying activities platform and the elevating mechanism of upper strata movable platform；Underlying activities platform is provided with longitudinal translation mechanism；Upper strata movable platform is provided with laterial translation mechanism.The automobile wireless charging system architecture of the present invention is simple, easy to implement, practical convenient.

Description

A car wireless charging system

technical field

The invention relates to an automobile wireless charging system.

Background technique

With the vigorous development of electric vehicles, the development of charging equipment has increasingly become a bottleneck restricting the development of the industry; the current popular charging equipment is charging piles. Although charging piles have the advantage of fast charging, their layout has relatively large defects, such as affecting parking. , takes up scarce space, and is easily damaged.

In addition, with the development of the economy, the number of cars has increased dramatically, so the parking spaces have become increasingly tight. Therefore, many car owners purchase parking locks to lock the parking spaces to prevent the parking spaces from being occupied by other vehicles.

In addition, in addition to the parking lot, many existing parking spaces have a low utilization rate, especially the parking spaces in many residential areas. After the owner drives to work or goes out to do errands in the morning, the parking space is vacant and cannot be used again until the owner returns. Therefore, basically every day Nearly 8-10 hours of vacancy, during which time the parking space is not being utilized.

This situation exists in various positions in the city, therefore, causing a large amount of parking spaces to be vacant, and at the same time, many vehicles have to be parked on the roadside or in the garage, causing parking space tension and traffic jams, thereby forming a relatively common parking lot. difficult social issues.

Therefore, it is necessary to design a new wireless charging system for automobiles.

Contents of the invention

The technical problem to be solved by the present invention is to provide a wireless charging system for automobiles. The wireless charging system for automobiles of the present invention has a compact structure, is easy to implement, can wirelessly charge vehicles, and is easy to operate.

The technical solution of the invention is as follows:

A wireless charging system for automobiles, comprising a supporting platform arranged in a recess and a transmitting coil arranged on the supporting platform;

The supporting platform includes a bottom movable platform, an upper movable platform and a lifting mechanism connecting the bottom movable platform and the upper movable platform; the bottom movable platform is provided with a longitudinal translation mechanism; the upper movable platform is provided with a lateral translation mechanism.

The lifting mechanism is a cylinder-type lifting mechanism or a scissor-type lifting mechanism. The cylinder type lifting mechanism is a push rod type driving mechanism, such as being driven by a pneumatic cylinder or a hydraulic cylinder.

The longitudinal translation mechanism includes a guide rail and a first rack rail arranged at the bottom of the recess;

There are two guide rails; one rack rail, and the rack rail and guide rail are arranged in parallel;

The bottom of the bottom movable platform is provided with a plurality of traveling wheels that can roll on the guide rail; there are 4 traveling wheels, 2 on one side.

The front end of the bottom movable platform is provided with a first motor; the rotating shaft of the first motor is provided with a gear, and the gear meshes with the first rack rail; when the first motor rotates, it can drive the bottom movable platform along the first rack rail. Vertical (back and forth) translation.

The lateral translation mechanism includes a second rack rail and a second motor; the second rack rail is arranged horizontally, and the left end or right end of the upper movable platform of the second motor; The gears meshed with the rails, when the second motor rotates, can drive the upper movable platform to translate laterally (left and right) along the second rack rails.

Code discs are provided on the rotating shafts of the first motor and the second motor. The code disc is used to detect the number of rotations of the motor, which can be converted into the displacement of the platform.

An electric movable cover is provided at the opening of the recessed part. Electric refers to motor drive, or electric signal control hydraulic cylinder or cylinder drive.

There are 2 movable cover plates, and a push rod for driving the movable cover plate is arranged in the recessed part, and the upper end of the push rod is connected with the ground of the movable cover plate.

An anti-pressure mechanism is also provided at the opening of the concave part, and when the movable cover is flattened, the anti-pressure mechanism can support the movable cover.

The anti-pressure mechanism is in the shape of a square frame. Made of stainless steel or cast iron for high strength.

The vehicle wireless charging system further includes a control unit, the control unit includes an MCU, and both the horizontal translation mechanism and the longitudinal translation mechanism are controlled by the MCU; the MCU is also connected with a communication module.

The steps of the car wireless charging system are on the parking space. The car wireless charging system is also equipped with an electronically controlled parking lock controlled by the MCU. The car wireless charging system is combined with the shared parking space; Identification code, the identification code is a QR code or a barcode or a character string, which can be associated with the parking lock and the parking space by scanning the code or inputting a character string with a smart phone; the charging data is fed back to the mobile phone to realize common billing for parking and charging.

The communication module is used to connect with a remote server, and is also used to communicate with the car based on bluetooth or wifi, or to be able to be controlled by a mobile phone (such as a mobile phone APP).

In addition, the limit switch and code disc output signals to the MCU;

Both the first motor and the second motor are stepping motors.

The first rack rail is located between the two guide rails.

The rear end of the bottom movable platform is provided with a limit switch; the front end of the motor is provided with a limit switch. The action of the limit switch indicates that the front or rear is in place, and the motor is stopped to ensure the safe operation of the entire equipment.

Wires with electric plugs are arranged on the movable platform at the bottom. Wires are used to connect to get mains power to power the transmitter coil.

There are also MCU and single-phase bridge rectification and inverter circuits on the bottom activity platform; the single-phase bridge rectification and inverter circuits include rectifier bridge and inverter bridge, the rectifier bridge uses 4 power diodes, and the inverter uses 4 IGBT, the connection method is an existing mature technology, and the G pole of the IGBT is controlled by the pulse sent by the MCU. The input side of the rectifier bridge is connected to the mains, and the output side of the rectifier bridge is connected to the transmitting coil through the inverter; the rectifier bridge is used to convert alternating current into direct current, and the inverter is used to convert direct current into alternating current of different frequencies, changing the frequency to Improve charging efficiency.

The display screen is arranged in the recessed part and is connected with the MCU for on-site debugging and real-time display of on-site status data.

There is a constant current charging circuit on the car side to efficiently charge the lithium battery.

The opening of the recess is provided with an inductor for sensing that there is a car above, such as an ultrasonic or photoelectric sensor; it is beneficial to realize automatic charging.

A method for controlling wireless charging of a car, comprising the following steps:

Step 1: Detect whether there is a car that can be charged; it can be a hybrid car or a pure electric car;

Step 2: Determine whether it is necessary to charge the car on site;

Step 3: Adjust the position of the charging device to fit the car, and start wireless charging;

Step 4: After charging is complete, stop charging.

In step 1, ultrasonic or photoelectric sensors are used to detect whether there is a car above the wireless charging system; and the car interacts with the wireless charging system to determine whether the car is the first car capable of charging.

In step 2, use manual mode or automatic mode to determine whether wireless charging is required;

In manual mode, the driver actively issues instructions to start the wireless charging system to charge the car;

The automatic mode is for the car to exchange information with the wireless charging system. If the car battery is lower than a preset threshold (such as 95% of the total battery capacity), the wireless charging process will be started.

The vehicle or the wireless charging system is equipped with a charge metering module, and the charging data of the charge metering module is fed back to the server. Specifically, the server manages the user information of the car owner (driver), and the charging data is associated with the car owner to realize billing and deduction.

The alignment mechanism between the charging platform and the vehicle: the charging system interacts with the vehicle, uses a certain position to charge for a period of time (such as 3s) and then stops, detects the current charging current on the vehicle side, and then moves the charging platform by a step (such as horizontal Or vertically move 5cm), charge for a period of time, and then detect the charging current, and so on, then the position with the largest charging current is the alignment position. Or the method of coarse adjustment and then fine adjustment can be used to quickly align.

A car wireless charging system also includes a remote data processing center, a parking lock and a smart phone;

The remote data processing center is connected to the Internet;

(1) Remote data processing center (also known as cloud device, cloud platform, cloud calculator or server); used to maintain parking space information and user information (user refers to the owner of the parking space); also used to communicate with smart phones interact;

(2) Parking lock: The parking lock includes a controller, an electric locking/unlocking mechanism, a communication module and a power supply module; the communication module is used for smart phone communication;

Marking codes (such as QR codes, barcodes, number sequences, text sequences, etc.) are set on or near the parking lock; the vicinity of the parking lock refers to the ground in front of the parking lock, or the garage beam or roof hanging above the parking lock ,wait;

The communication module is connected to the controller, and the power supply module supplies power to the electric locking/unlocking mechanism and the controller;

The controller controls the action of the electric locking/unlocking mechanism;

The parking lock is wirelessly connected to the remote data processing center through its own remote communication module, or the parking lock is connected to the remote data processing center through the on-site data transfer station of the garage;

(3) Smartphone: used to communicate with the remote data processing center and the parking lock.

The car wireless charging system also includes a reservation terminal device connected to the Internet; the reservation terminal device is a PC, a tablet computer, a notebook computer, or another smart phone; the smart phone communicates through a WiFi communication module, GPRS, 3G, 4G or 5G The modules communicate with a remote data processing center.

The smart phone communicates with the parking lock through a bluetooth communication module or a WiFi communication module.

The parking lock is provided with a sensor for detecting the state of the parking lock, and the sensor is connected with the controller. The sensor can be a push reset switch, a Hall sensor, a photoelectric sensor (such as an infrared beam tube), a travel switch, and the like.

The display screen can also be arranged on the parking space lock, or on the beam or roof above the parking space; the display screen is connected with the controller of the parking space lock.

The parking lock also includes a sensor for detecting whether there is a car in the parking space; the sensor adopts an infrared sensor, an ultrasonic sensor, etc., and the sensor is connected with the controller.

The on-site data transfer station of the garage communicates with the parking lock through wired or wireless methods;

The wired mode is any one of CAN bus, twisted pair, and network cable;

The wireless mode refers to any one of WiFi, Bluetooth, ZigBee, and remote control communication (such as using a 433MHz module, etc.).

The on-site data transfer station of the garage is connected to the Internet through wireless or wired methods;

The wireless mode means that the WiFi module and wireless router are connected to the Internet. The wired mode is connected to the LAN through a network cable and then connected to the WAN, or directly connected to the WAN through a network cable. The WAN is the Internet.

The parking lock is powered by its own energy storage module or externally.

The external power supply refers to the utility power interface connected to the garage, or the DC power supply interface connected to the garage.

The server sends a confirmation message or an unlocking password to the smartphone, and the confirmation message or the unlocking password is used to control the unlocking of the parking lock. The smart phone sends the unlock confirmation message or the unlock password to the parking lock to control the unlocking of the parking lock. After issuing the unlock password or unlocking, update the status information of the parking space on the server side, such as being in use. and start billing.

The smart phone obtains the status information of the parking space lock (such as locked, unlocked status, locked and unlocked time information, etc.), and feeds back the status information to the remote data processing center.

The timing module is used to calculate the time when a certain user uses the parking space.

The billing module is used to calculate the fee based on the time or times that a certain user uses the parking space.

A method for sharing parking spaces based on smart phones, comprising the following steps:

Step 1: The smart phone obtains the parking space identification code or the user enters the parking space identification code on the smart phone;

Step 2: The smart phone sends a parking space usage request to the remote data processing center;

The parking space identification code is included in the parking space usage request;

Step 3: The remote data processing center responds to the request for using the parking space sent by the smart phone, and sends a response message to the smart phone; if the remote data processing center allows the user to use the parking lock, the response message contains the unlock password or unlocking instruction, and proceeds to step 4 ;Otherwise end the car step;

Step 4: Control the unlocking of the parking lock. After issuing the unlock password or unlocking, update the status information of the parking space on the server side, such as being in use. And start timing and billing;

The parking lock is unlocked under the control of the smart phone, or under the direct control of the remote data processing center.

(a) The unlocking of the parking lock under the control of the smart phone means that the smart phone sends the unlock password or unlocking instruction to the parking lock, and the parking lock is unlocked;

(b) Unlocking under the direct control of the remote data processing center refers to: the remote data processing center directly sends the unlock password or unlock instruction to the parking lock, or the remote data processing center sends the unlock password or unlock instruction to the parking lock through the on-site data transfer station of the garage. parking lock.

After unlocking, a wireless charging step may be further included. After the charging is completed, or when the car leaves, the charging process is terminated;

Also include step 5

Step 5: The parking lock reset step;

The parking lock is locked under the control of a smart phone or a remote data processing center;

Alternatively, the parking lock is automatically locked.

In step 5, the automatic locking of the parking space lock means that no vehicle is detected above the parking space and lasts for T time, where T is any value in 0-120s. If there is no vehicle for 30 seconds, it will be automatically locked.

In step 5, the parking lock is locked under the control of the smart phone, which means that the smart phone communicates with the parking lock through Bluetooth or WiFi to control the locking of the parking lock. For example, the parking lock is controlled to be locked by a password or an unlock command.

In step 5, locking under the control of the remote data processing center means that the remote data processing center directly sends an unlocking command or unlocking password to the parking lock for locking, and the remote data processing center sends an unlocking command or unlocking password to the on-site data transfer station in the garage for further locking. The parking lock is controlled by the on-site data transfer station of the garage.

In step 3, the response information includes the response information of allowing the use of parking spaces and the response information of not allowing the use of parking spaces;

(1) The response message for allowing the use of a parking space includes an unlocking confirmation message or an unlocking password for the corresponding parking space. The unlock password is generally a special password corresponding to a certain parking space, and the lock can be unlocked through this password. In addition, the unlock confirmation message can be a message without a password. After the mobile phone receives the confirmation message, it directly sends an unlock command to the parking lock. It is a series of preset codes, which can include unlocking passwords (preset and common unlocking passwords in mobile phones), or ID codes of parking locks, based on the ID codes and unlocking instructions, the parking locks can be unlocked; instructions It can also be a simple unlocking command, because after Bluetooth pairing, the parking lock is connected with the smart phone, and the unlocking of the parking lock can be directly controlled.

The reason for not allowing the use of the parking space may be included in the response information of not allowing the use of the parking space, such as a failure of the parking space lock, such as the parking space being pre-booked, the parking space is a dedicated parking space, and so on.

The parking lock uploads the status of the parking lock to the remote data processing center in real time, and the status of the parking lock includes the locked and unlocked status of the parking lock.

Transmission method: the parking lock uploads information to the server through the smart phone, the parking lock uploads information to the server through its own wifi module or wireless communication module (such as 3g, 4g module, etc.), or the parking lock transmits data through the garage site through zigbee, etc. The station uploads information to the server.

The status information of the parking lock also includes the status information of whether there is a vehicle above the parking lock.

Also include a billing step, the remote data processing center calculates the time the user uses the parking space or the number of times the parking space is used (the unlocking and unlocking process is defined as using a parking space once), and charges based on the time and times.

The time when the user uses the parking space means that when the parking lock is unlocked or the parking space is reserved, the parking space usage timing starts, and the parking space usage timing ends after the parking lock is re-locked or the smart phone sends out a locking command.

Before step 1, a parking space reservation step is also included;

The step of booking a parking space refers to using a booking terminal to make a reservation.

After the billing is completed, the payment is automatically deducted from the user's payment module. The payment module is Alipay, online banking, WeChat, and pre-charge (wallet) in the platform.

After the smart phone sends a locking command, or after the sensor detects that there is no vehicle in the parking space, or after the parking space detects no wireless signal, the parking space lock is locked (reset), and the locking status is fed back to the server by the smart phone.

The server determines whether the parking space is allocated to the user based on preset conditions. The preset condition means that the parking space is not reserved by other users, or the parking space lock is not faulty.

The preset condition means that the parking space is not reserved by other users, or the parking space lock is not faulty.

The parking space sharing method also includes a billing step. After the user finishes using the parking space (such as after the parking space lock is locked), the remote data processing center calculates the time the user uses the parking space or the number of times the parking space is used (the process of unlocking and unlocking once is defined as using One parking space is based on the time and times mentioned, and is billed according to the preset billing standard (the billing standard is 0.1 yuan per minute, or the cost is different in different time periods, or it is free within 2 hours, and it will be charged for more than 2 hours. minute billing, etc.).

After the billing is completed, the payment is automatically deducted from the user's payment module. The payment module is Alipay, online banking, WeChat, and pre-charge (wallet) in the platform.

Billing standards such as 0.1 yuan per minute, or different fees for different time periods, or free within 2 hours, more than 2 hours will be charged by the minute, and so on.

Obtaining the parking space identification code in step 1 means that the user scans the two-dimensional code or bar code at the parking space with a smart phone to obtain the identification code (ID number) of the parking space lock;

Inputting the parking space identification code on the smart phone in step 1 means that the user manually enters the parking space identification code on the mobile phone after seeing the parking space identification code at the parking lock; specifically, entering the parking space identification code in the APP interface of the mobile phone .

The two-dimensional code or barcode is located on the parking space lock, or printed on the parking space, or printed on the display board (the display board is hung on the beam or ceiling of the garage), or displayed on the display screen;

The status update information of the parking space is uploaded to the remote data processing center through the mobile phone;

If necessary, there is also a detection module, a display module, etc.; there is also a communication module, which is used to communicate with the smart phone, and unlock and lock under the control of the smart phone.

The electric parking lock includes a base, a blocking part, a driving mechanism, a controller and a communication module;

One side of the blocking part is hinged to the base (through a hinge or a rotating shaft);

The driving mechanism is an electric driving mechanism; the driving mechanism is arranged on the base; the driving mechanism is used to drive the blocking member to rise or fall; (reset) (such as descending to the initial position); the driving mechanism is controlled by the controller;

The communication module is connected to the controller; the communication module is used to receive instructions or data, the instructions refer to unlock instructions and reset instructions, etc., and the data refers to the transmitted password for verification, etc.

The front of the blocking component is provided with an identification layer printed with a two-dimensional code or a logo number. Numbers can be numbers or letters or symbols (such as greater than, less than) Chinese characters and so on.

The base is provided with at least one stopper (the stopper is used for limiting the position of the blocking part, preventing the stopper from further pressing down on the push rod mechanism at the bottom, etc.).

At least one sensor connected to the controller for detecting the state of the blocking component is provided on the frame of the base (or the stopper). The sensor can be a Hall sensor, a photoelectric sensor (such as an infrared tube), a travel switch, and the like.

The sensor is a press-reset switch. When pressed by an external force, the switch is closed, and when the external force is removed, the switch is reset and disconnected under the action of the spring, thereby detecting whether the blocking member is raised.

The electric parking lock also includes an energy storage module (storage battery or lithium battery or supercapacitor, etc.); the energy storage module supplies power to the drive mechanism and the controller.

The blocking part is provided with a display screen (LED array display screen, which is used to display the status of the parking space, such as the parking space has been reserved, or is a private parking space, or is a dedicated parking space, etc.).

The communication module is a wired communication module, and the wired communication module is a CAN bus module (or connected by a serial port or a network cable).

Described communication module is wireless communication module, and wireless communication module is at least one in bluetooth communication module, WiFi communication module, ZigBee communication module, 3G, 4G, 5G, GSM, GPRS communication module. It can also be a remote control module based on 2.4G, 27M, 40-72MHz frequency, such as a communication module used in aircraft models, remote control toy cars, remote control toy ships, etc.

The drive mechanism is at least one of a chain drive mechanism, a belt drive mechanism, a gear drive mechanism, a push rod drive mechanism, and an electromagnet drive mechanism.

The gear drive mechanism includes a motor and a gear transmission mechanism. The motor drives the rotating shaft to rotate through the gear transmission mechanism, thereby driving the blocking parts to move;

The belt drive mechanism includes a motor and a belt transmission mechanism. The motor drives the rotating shaft to rotate through the belt transmission mechanism, thereby driving the blocking parts to move;

The push rod drive mechanism is similar to the chain drive mechanism, and the push rod can be a hydraulic telescopic rod or a screw rod;

The electromagnet driving mechanism includes an electromagnet and a return spring; when the electromagnet is energized, the blocking part is attracted back to its position; when the electromagnet is de-energized, the blocking part is lifted up by the action of the spring.

Also includes a positioning module (GPS or Beidou) connected to the controller

The electric parking lock also includes a sensor for detecting whether there is a car in the parking space, specifically an infrared sensor, an ultrasonic sensor, etc.

The blocking part is a baffle or a U-shaped bar.

The blocking part also cooperates with the anti-kick bar. The anti-kick bar is arranged on the base,

The remote data processing center is also called the parking space sharing platform, and includes a server, which is connected to the Internet; a storage device and a processor are arranged in the server, and the storage device is used to store (1) registration and status information and status information of each parking space lock. (2) Registration information and status information of each user;

A plurality of instructions are also stored in the storage device of the server, and the instructions are suitable for being loaded by the processor and performing the following operations:

Operation 1: Obtain the status information of the parking space, and update the status information of the corresponding parking space in the storage device;

Operation 2: In response to the parking space usage request, at least one of the following two operations is adopted:

Operation 2-1: Respond to the on-site parking space use request sent by the smartphone; [the use request here includes on-site use or reservation]

The smartphone initiates a parking space use request to the server. The parking space use request information includes the ID code of the parking space lock. The ID code is entered by scanning the code or manually. Scanning refers to scanning the QR code or bar code;

When the processor on the server responds to the parking space use request, it judges whether the parking space is assigned to the user (car owner) corresponding to the smart phone according to the parking space information corresponding to the ID code; if so, then start operation 3; Feedback the reason why the parking space is not allowed to be used, such as the parking space is reserved, the parking space is not within the use time limit, the parking space is a special parking space for a certain business, etc.;

Operation 2-2, responding to the request of the reservation terminal to reserve a parking space;

Operation 3: Issue a command to unlock the parking lock.

In operation 1, (1) the parking lock on the parking space directly sends the parking space status information to the server through the built-in remote communication module; or, (2) the parking space lock on the parking space transfers the parking space status information through the garage field data in the garage or (3) the parking lock on the parking space forwards the parking space status information to the server through the interaction with the smart phone;

The parking space information includes status information on whether the parking space lock is locked, and the parking space information optionally includes information on whether there is a car parked in the parking space.

In operation 3, the server sends the parking lock unlock command through the following channels

(1) The server sends a parking lock unlock command to the smart phone, and the smart phone interacts with the parking lock information (such as via Bluetooth) to unlock the parking lock;

(2) The server sends a parking lock unlock command to the parking lock through the Internet (wired or wireless), and the parking lock starts unlocking after receiving the parking lock unlock command;

(3) The server sends a parking lock unlock command through the Internet (wired or wireless) to the garage on-site data transfer station, and the garage on-site data transfer station interacts with the parking lock information to unlock the parking lock.

Also includes operation 4;

Respond to the parking space information query of the access terminal; support reservation;

Receive the parking space query request with query conditions initiated by the access terminal, query the parking space information that meets the query conditions in the storage device (database); and feed back the parking space information to the access terminal (the access terminal is also called a reservation terminal);

The access terminal is at least one of a smart phone, a PC, a tablet computer and a notebook computer capable of accessing the wired Internet or the mobile Internet.

Also includes operation 5: update operation of prompt information at the parking lock end;

The server sends a control command to the parking lock end, and the parking space prompt information is displayed on the display module of the parking lock end

The prompt information can be, "reserved"----indicates that this parking space has been reserved, "invalid during t0-t1"-indicates that it is not open to the public due to reservation and other reasons; "reserved by a certain business" Or "for a certain business", "this parking space is free within 2 hours", the display can display business information, or advertising information; and so on.

Including operation 6: parking timing, the starting time of timing is: (1) when the parking lock is actually unlocked, or (2) when the server sends an unlocking command, or (3) when the server sends a reservation success message to the reservation terminal, or (4) When the server sends a response message to the smartphone requesting immediate use of the parking space;

The timing end time is: (1) when the server receives the cancellation request sent by the reservation terminal; or (2) when the server receives the request from the smart phone to end the use of the corresponding parking space; When the lock information is fed back, or (4) when the server issues a lock command.

Also includes operation 7, issuing a parking lock lock instruction;

The server sends the parking lock lock command through the following channels

(1) The server sends a parking lock command to the smart phone, and the smart phone interacts with the parking lock information (such as through Bluetooth) to control the parking lock;

(2) The server sends the parking lock command to the parking lock through the Internet (wired or wireless), and the parking lock starts to lock after receiving the parking lock command;

(3) The server sends a parking lock lock instruction to the garage on-site data transfer station through the Internet (wired or wireless), and the garage on-site data transfer station interacts with the parking lock information to make the parking lock lock.

The described operation 2-2, responding to the request of the reservation terminal to reserve a parking space includes the following steps;

The reservation terminal (such as a smart phone) initiates a parking space reservation request to the server with a registered user. The parking space use request information includes the ID code of the parking space lock. The ID code is obtained through network query, or the icon on the web page or APP is associated with the ID code;

When the processor on the server responds to the parking space reservation request, it judges whether the parking space is assigned to the registered user (car owner) according to the parking space status information corresponding to the ID code; if so, then sends a response message to the reservation terminal to prompt the reservation success; otherwise , feed back to the reservation terminal the reason why the reservation of the parking space is unsuccessful, such as a failure of the parking space, or being pre-booked by others, etc.

Also includes operation 8, billing operation;

The server is based on (1) the time of occupying the parking space or (2) the number of times of occupying the parking space or (3) the combination of the time and the number of times of occupying the parking space, and according to the preset billing standard (charging standard such as 0.1 yuan per minute, or the cost of different time periods There is a difference, or it is free within 2 hours, and it is charged by the minute if it exceeds 2 hours, etc.), charging for a certain parking space occupancy.

It also includes operation 9, automatic deduction operation; after the billing is completed, based on the preset deduction agreement, the user who uses the parking space is directly debited; through Alipay, online banking, WeChat, pre-charge (wallet) in the platform, etc. chargeback.

A method for booking and using a parking space, comprising the following steps:

Step 1: Book a parking space;

Step 2: Control the unlocking of the parking lock on site;

Method 1: Smartphone directly controls the unlocking of the parking lock;

Method 2: Control the unlocking of the parking lock through the remote data processing center.

In the method 1, the smart phone arrives at the reserved parking space, turns on the bluetooth, clicks on the smart phone to unlock, and the smart phone sends the password or unlocking instruction obtained when booking to the parking lock; triggering the corresponding situation of the parking lock unlocking method 1, The parking lock and the garage do not have a communication module, so a mobile phone is required to unlock it.

Described method 2 comprises the following steps:

Step 21: The smart phone obtains the parking space identification code (such as by scanning the QR code, bar code or image recognition, etc.) or enters the parking space identification code on the smart phone;

Step 22: The smart phone sends a parking space usage request to the remote data processing center;

The parking space identification code is included in the parking space usage request;

Step 23: The remote data processing center responds to the request for using the parking space sent by the smart phone; if necessary, sends a response message to the smart phone; since it is a pre-booked parking space, it is generally allowed to unlock at this time;

Step 24: The smart phone or the remote data processing center controls the unlocking of the parking lock. After issuing the unlock password or unlocking, update the status information of the parking space on the server side, such as being in use. And start timing and billing;

The parking lock is unlocked under the control of the smart phone, or under the direct control of the remote data processing center;

The smartphone sends the unlock password or unlock instruction to the parking lock, and the parking lock is unlocked

In the case of method 2, the parking lock itself and the garage have communication modules (such as 3G, 4G, 5G communication modules, etc., or can access the Internet through WiFi), so there is no need to unlock the phone through Bluetooth.

Also includes step 3: the parking lock reset step;

The parking lock is locked under the control of a smart phone or a remote data processing center;

Alternatively, the parking lock is automatically locked.

Step 1 includes the following sub-steps:

Step 11: the reservation terminal sends a reservation request;

After the reservation terminal (smart phone, PC, laptop, tablet computer, etc.) logs in as a certain user, it initiates a parking space reservation request to the remote data processing center (server) in the name of the logged-in user, and the parking space use request information includes the parking space lock ID code, ID code is obtained through network query, or the icon on the webpage or APP is associated with the ID code;

Step 12: the remote data processing center responds to the reservation request;

When the processor on the server responds to the parking space reservation request, it determines whether the parking space is assigned to the user (car owner) corresponding to the smart phone according to the parking space status information corresponding to the ID code; if so, then sends a response message to the reservation terminal to prompt the reservation Success; otherwise, feed back to the reservation terminal the reason why the reservation of the parking space is unsuccessful, such as a parking space failure, or being pre-booked by others, etc.;

If the reservation is successful, start timing, and mark the status of the parking space on the server side, and feed back the message to the parking lock, and the display at the parking lock shows that the parking space has been reserved.

In step 11, the reservation terminal selects the destination by inputting keywords or maps on the web page or mobile phone APP, and the remote data processing center (server) finds out the valid (referring to the available) location of the destination and its vicinity. ) The distribution of parking spaces and the status of the parking spaces. For example, the available parking spaces are marked in green, or sorted according to the distance from the destination for the user to choose, and the parking charging standard can be further displayed.

In step 3, the automatic locking of the parking lock refers to detecting that there is no vehicle above the parking space, and lasts for T time, T is any value in 0-120s; if there is no vehicle for 30 seconds, it will be automatically locked.

The locking of the parking space lock under the control of the smart phone means that the smart phone communicates with the parking space lock through Bluetooth or WiFi to control the locking of the parking space lock; in the whole process of using the parking space, including from the completion of the reserved parking space to the final locking of the parking space lock At present, the parking lock is associated with the smart phone, so the smart phone can control the locking of the parking lock.

In step 3, locking under the control of the remote data processing center means that the remote data processing center directly issues a locking command or a locking password to the parking lock for locking, and the remote data processing center sends a locking command or a locking password to the garage site The data transfer station, and then the on-site data transfer station in the garage controls the locking of the parking space.

In step 23, the response message includes an unlock confirmation message or an unlock password for the corresponding parking space. The unlock password is generally a special password corresponding to a certain parking space, and the lock can be unlocked through this password. In addition, the unlock confirmation message can be a message without a password. After the mobile phone receives the confirmation message, it directly sends an unlock command to the parking lock. It is a series of preset codes, which can include unlocking passwords (preset and common unlocking passwords in mobile phones), or ID codes of parking locks, based on the ID codes and unlocking instructions, the parking locks can be unlocked; instructions It can also be a simple unlocking command, because after Bluetooth pairing, the parking lock is connected with the smart phone, and the unlocking of the parking lock can be directly controlled.

The parking lock uploads the status of the parking lock to the remote data processing center in real time, and the status of the parking lock includes the locked and unlocked status of the parking lock.

Transmission method: the parking lock uploads information to the server through the smart phone, the parking lock uploads information to the server through its own wifi module or wireless communication module (such as 3G, 4G module, etc.), or the parking lock transmits data through the garage site through zigbee, etc. The station uploads information to the server.

The parking space reservation and method of use also include a billing step, the remote data processing center calculates the time the user uses the parking space (starting from the successful reservation) or the number of times the parking space is used (the unlocking and unlocking process is defined as using a parking space once) ), billing is based on the stated time and times.

The time when the user uses the parking space means that when the parking lock is unlocked or the parking space is reserved, the parking space usage timing starts, and the parking space usage timing ends after the parking lock is re-locked or the smart phone sends out a locking command.

The status information of the parking lock also includes the status information of whether there is a vehicle above the parking lock.

Beneficial effect:

The automobile wireless charging system of the present invention has the following characteristics:

(1) The trinity of the horizontal and vertical translation mechanism and the lifting mechanism can flexibly adjust the position to align the vehicle:

It has a horizontal and vertical translation mechanism based on guide rails and rack rails, which can effectively regulate the translation route of the charging platform. The translation is to align with the power receiving device of the car chassis. The lifting mechanism is used to be as close as possible to the car chassis to improve charging efficiency.

(2) It has a unique anti-pressure mechanism and a cover-based charging mechanism protection mechanism, which can effectively protect the charging platform. And the anti-pressure device can not conflict with the lifting mechanism, thinking that the space in the middle of the anti-pressure frame is a space to avoid, and the lifting mechanism can be allowed to stretch out upwards.

(3) The entire charging mechanism is hidden at the bottom of the parking space, that is, in the concave part, which is easy to implement, does not occupy space on the ground, and can continue to charge when parking, which is suitable for popularization and implementation.

(4) There is a code disc on the motor, which can detect the position of the charging platform and facilitate the front and rear translation control of the charging platform.

(5) With a limit switch, the platform can stop in time after it is in place to prevent the motor from stalling, which is conducive to ensuring the long-term safe operation of the entire equipment.

To sum up, this wireless charging device for electric vehicles has complete functions, smooth translation, and various protective measures, which is suitable for popularization and implementation.

In addition, the charging system of the present invention is also combined with the parking lock, enabling sharing of parking spaces and unified management of parking and charging; through the optimal allocation of social resources, the utilization rate of parking spaces can be improved, which is conducive to solving the social problem of tight parking spaces.

The present invention realizes the sharing of parking spaces by networking the parking spaces and controlling the parking spaces through the parking space lock, based on the mobile information terminal of the smart phone, and uniformly supervised by the server.

With this system, the idle parking spaces will be fully utilized, so that the phenomenon of random parking on the road will be significantly reduced, which is conducive to smooth traffic and a more orderly urban appearance.

In addition, through the paid use of parking spaces, users who own parking spaces and platform operating entities can obtain benefits. At the same time, users who need to park can use parking spaces at a relatively low price, which is beneficial to all parties.

Since the parking lock has a unique identification number, or the identification number is encapsulated in a two-dimensional code, this parking lock together with the parking space can be connected to the Internet of Things and become a unit (node) in the shared parking space, making the parking space a shared Parking spaces are possible. After parking spaces are shared, it will not only benefit the owner of the parking space, but also facilitate the reservation of parking spaces and the travel of the car owner. More importantly, it will help the sharing and efficient use of social resources. Social issues are of great help.

All in all, this vehicle wireless charging system is a technical solution that conforms to the trend of the sharing economy era and has significant social benefits, and is suitable for promotion and implementation.

Description of drawings

Figure 1 is an electrical schematic diagram of a wireless charging system for a vehicle;

Fig. 2 is a schematic diagram (side view) of the overall structure of the wireless charging system for automobiles;

Fig. 3 is a schematic diagram (top view) of the overall structure of the automobile wireless charging system;

Fig. 4 is a schematic diagram when the cover plate is closed;

Fig. 5 is a schematic diagram when the cover plate is lifted;

Figure 6 is a schematic structural view of the anti-pressure frame;

Figure 7 is a schematic diagram of the dimming circuit;

Figure 8 is a schematic diagram of constant current charging;

Fig. 9 is a framework diagram of a charging system with a parking lock;

Figure 10 is a flowchart of unlocking and charging;

Figure 11 is a data flow chart of the shared parking lock.

Description of symbols: 1-recess, 2-bottom movable platform, 3-first motor, 4-limit switch, 5-guide rail, 6-first rack rail, 7-gear, 8-code disc, 9-walking Wheel, 10-lifting platform, 11-second rack rail, 12-wire, 13-connecting plug, 14-transmitting coil, 15-scissor lifting mechanism, 16-upper movable platform, 17-push rod, 18 -Anti-pressure frame, 19-removable cover.

detailed description

The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment:

As shown in Figures 1-6, a wireless charging system for automobiles includes a supporting platform arranged in the recessed part 1 and a transmitting coil 14 arranged on the supporting platform;

The supporting platform includes a bottom movable platform 2, an upper movable platform 16 and a lifting mechanism connecting the bottom movable platform and the upper movable platform; the bottom movable platform is provided with a longitudinal translation mechanism; the upper movable platform is provided with a lateral translation mechanism.

The lifting mechanism is a cylinder lifting mechanism or a scissor lifting mechanism 15 . The cylinder type lifting mechanism is a push rod type driving mechanism, such as being driven by a pneumatic cylinder or a hydraulic cylinder.

The longitudinal translation mechanism includes a guide rail 5 and a first rack rail 6 arranged at the bottom of the recess;

There are two guide rails; one rack rail, and the rack rail and guide rail are arranged in parallel;

The bottom of the bottom movable platform is provided with a plurality of walking wheels 9 that can roll on the guide rail; there are 4 walking wheels, 2 on one side.

The front end of the bottom movable platform is provided with a first motor 3; the rotating shaft of the first motor is provided with a gear 7, and the gear meshes with the first rack rail; when the first motor rotates, it can drive the bottom movable platform along the first gear. The rails translate vertically (back and forth).

The lateral translation mechanism comprises a second rack rail 11 and a second motor; the second rack rail is arranged laterally, and the left end or the right end of the upper movable platform of the second motor; The gears meshed with the rack rails can drive the upper movable platform to translate laterally (left and right) along the second rack rails when the second motor rotates.

A code disc 8 is provided on the rotating shafts of the first motor and the second motor. The code disc is used to detect the number of rotations of the motor, which can be converted into the displacement of the platform.

An electric movable cover 19 is provided at the opening of the recess. Electric refers to motor drive, or electric signal control hydraulic cylinder or cylinder drive.

There are 2 movable cover plates, and a push rod for driving the movable cover plate is arranged in the recessed part, and the upper end of the push rod is connected with the ground of the movable cover plate.

An anti-pressure mechanism 10 is also provided at the opening of the recessed portion. When the movable cover is flattened, the anti-pressure mechanism can support the movable cover.

The anti-pressure mechanism is in the shape of a square frame. Made of stainless steel or cast iron for high strength.

The vehicle wireless charging system further includes a control unit, the control unit includes an MCU, and both the horizontal translation mechanism and the longitudinal translation mechanism are controlled by the MCU; the MCU is also connected with a communication module.

The car wireless charging system is arranged on the parking space. The car wireless charging system is also equipped with an electronically controlled parking lock controlled by the MCU. The car wireless charging system is combined with the shared parking space; Identification code, the identification code is a QR code or a barcode or a character string, which can be associated with the parking lock and the parking space by scanning the code or inputting a character string with a smartphone; and feeding back the charging data to the mobile phone to realize common billing for parking and charging.

The communication module is used to connect with a remote server, and is also used to communicate with the car based on bluetooth or wifi, or to be able to be controlled by a mobile phone (such as a mobile phone APP).

In addition, the limit switch and code disc output signals to the MCU;

Both the first motor and the second motor are stepping motors.

The first rack rail is located between the two guide rails.

The rear end of the bottom movable platform is provided with a limit switch 4; the front end of the motor is provided with a limit switch 4. The action of the limit switch indicates that the front or rear is in place, and the motor is stopped to ensure the safe operation of the entire equipment.

The bottom movable platform is provided with the lead of band connection plug 13. Wires are used to connect to get mains power to power the transmitter coil.

There are also MCU and single-phase bridge rectification and inverter circuits on the bottom activity platform; the single-phase bridge rectification and inverter circuits include rectifier bridge and inverter bridge. The rectifier bridge uses 4 power diodes and the inverter uses 4 power diodes. IGBT, the connection method is an existing mature technology, and the G pole of the IGBT is controlled by the pulse sent by the MCU. The input side of the rectifier bridge is connected to the mains, and the output side of the rectifier bridge is connected to the transmitting coil through the inverter; the rectifier bridge is used to convert alternating current into direct current, and the inverter is used to convert direct current into alternating current of different frequencies, changing the frequency to Improve charging efficiency.

The display screen is arranged in the recessed part and is connected with the MCU for on-site debugging and real-time display of on-site status data.

There is a constant current charging circuit on the car side to efficiently charge the lithium battery.

The opening of the recess is provided with an inductor for sensing that there is a car above, such as an ultrasonic or photoelectric sensor; it is beneficial to realize automatic charging.

As shown in Figure 7, the charging system also includes a brightness adjustment circuit for adjusting the luminous brightness of the display screen; the brightness adjustment circuit includes MCU, LED light string, triode, potentiometer Rx and A/D converter; the triode is NPN type Transistor; the fixing frame of the display screen is equipped with a knob switch and the potentiometer Rx is connected coaxially;

The potentiometer Rx and the first resistor R1 are connected in series to form a voltage divider branch, one end of the voltage divider branch is connected to the positive pole Vcc of the power supply, and the other end of the voltage divider branch is grounded; the connection point of the potentiometer Rx and the first resistor R1 is connected to the A/D The input terminal of the converter; the output terminal of the A/D converter is connected to the data input port of the MCU;

The LED light string includes multiple LED lights connected in series; the positive pole of the LED light string is connected to the positive pole Vcc of the power supply; the negative pole of the LED light string is connected to the C pole of the triode, and the E pole of the triode is grounded through the second resistor R2; the B pole of the triode is connected to output of the MCU. The positive Vcc of the power supply is 5V, and the A/D converter is an 8-bit serial output converter.

As shown in Figure 8, on the car side, the lithium battery is charged through the constant current charging circuit. In the constant current charging circuit, the components or labels are described as follows:

VIN+-----Input power positive pole.

VIN------Input power negative pole.

VOUT+-----Output the positive pole of the power supply.

VOUT----- output power supply negative.

VREF+-----the positive pole of the reference power supply

C1 is the input filter capacitor.

C2 is the output filter capacitor.

C3 is the current sampling feedback filter.

R1, R2, R5, and C3 form a current sampling feedback circuit.

R3 and R4 are voltage sampling feedback circuits.

D1 is the isolation diode.

The constant current charging circuit includes a constant voltage driver chip and a current feedback circuit;

(1) The voltage output terminal of the constant voltage driver chip is the positive output terminal VOUT+ of the constant current charging circuit; the negative output terminal of the constant voltage driver chip is grounded;

The constant voltage drive chip is powered by the DC voltage supply terminals VIN+ and VIN-;

(2) The current feedback circuit includes resistors R1, R2 and R5 and a reference voltage terminal VREF+;

The reference voltage terminal VREF+ is grounded through serially connected resistors R1, R2 and R5;

The connection point of resistors R5 and R2 is the negative output terminal VOUT- of the constant current charging circuit;

The connection point of the resistors R1 and R2 is connected to the feedback terminal FB of the constant voltage driver chip.

The constant current charging circuit also includes a voltage feedback circuit;

The voltage feedback circuit includes resistors R3 and R4 and diode D1;

Resistors R3 and R4 are connected in series between the positive output terminal VOUT+ of the constant current charging circuit and ground; the connection point of resistors R3 and R4 is connected to the anode of diode D1; the cathode of diode D1 is connected to the feedback terminal FB of the constant voltage driver chip.

Description of working principle:

Use a stable reference power supply as the reference voltage, and use R1, R2, R5 to divide the voltage to obtain a voltage equal to FB, so that FB can be used to adjust the internal PWM of the DCDC IC to control the output current. For example, when the output current becomes larger, the voltage on the sampling resistor R5 will increase. Since VRFE+ is a fixed value, the FB voltage will become larger, and FB will become larger, and the duty cycle will decrease, thereby reducing the output current. , and complete a complete feedback to achieve the purpose of stabilizing the current output.

Constant current calculation:

Let the voltage generated by the current flowing on R5 be VIo, and the output current be Io

The reference voltage is VREF+=2.5V,

FB voltage is VFB=0.6V,

R5＝0.1Ω, R1＝40KΩ, R2＝10KΩ

but:

VIo=Io*R5

VFB＝VIo+((VREF+-VIo)*R2/(R1+R2))

Calculated:

Io＝(VFB*(R1+R2)-R2*VREF+)/R1*R5

If take K=(VFB*(R1+R2)-R2*VREF+)/R1 then the equation

Io=K/R5

From the calculation formula, the Io output current has nothing to do with the output voltage and input voltage, but only with VFB.R1, R2, VREF, and these parameters are fixed in the specific design (VFB in steady state is Fixed, for the chip fp7192 constant voltage chip, its steady state value is 0.6v), so K must be a fixed value, so the formula:

Io=K/R5 has excellent linearity and excellent controllability.

Assign the above parameters to the specific values set above to get:

Io＝(VFB*(R1+R2)-R2*VREF+)/R1*R5

＝(0.6*(40+10)-10*2.5)/40*0.1

=1.25A

It can be seen from the above equation that this scheme introduces a fixed VREF+, so that Io becomes an equation that is only linearly related to the R5 sampling resistance, so that Io becomes constant, so as to achieve the purpose of constant current.

The characteristics of the constant current circuit in this scheme are as follows:

1. Use a stable and fixed VREF+ voltage, which is convenient for precision control and stability control.

2. It is simpler and more reliable to use the current sampling to change the feedback of the resistance voltage division.

3. Wide applicability, any circuit that requires constant current can be used.

Claims (10)

1. A wireless charging system for automobiles, characterized in that it comprises a supporting platform arranged in the recess (1) and a transmitting coil (14) arranged on the supporting platform; The supporting platform includes a bottom movable platform (2), an upper movable platform (16) and a lifting mechanism connecting the bottom movable platform and the upper movable platform; the bottom movable platform is provided with a longitudinal translation mechanism; the upper movable platform is provided with a horizontal translation mechanism. 2. The wireless charging system for automobiles according to claim 1, characterized in that the lifting mechanism is a cylinder-type lifting mechanism or a scissor-type lifting mechanism (15). 3. The vehicle wireless charging system according to claim 1, characterized in that the longitudinal translation mechanism comprises a guide rail (5) and a first rack rail (6) arranged at the bottom of the recess; There are two guide rails; one rack rail, and the rack rail and guide rail are arranged in parallel; The bottom of the bottom movable platform is provided with a plurality of walking wheels (9) that can roll on the guide rail; The front end of the bottom movable platform is provided with a first motor (3); the rotating shaft of the first motor is provided with a gear (7), and the gear meshes with the first rack rail; when the first motor rotates, it can drive the bottom movable platform Translate longitudinally (back and forth) along the first rack rail. 4. The automobile wireless charging system according to claim 3, characterized in that, the lateral translation mechanism comprises a second rack rail (11) and a second motor; the second rack rail is arranged laterally, and the upper layer of the second motor The left end or the right end of the movable platform; the rotating shaft of the second motor is provided with a gear meshed with the second rack rail, and when the second motor rotates, it can drive the upper movable platform to translate laterally along the second rack rail. 5. The wireless charging system for automobiles according to claim 4, characterized in that code discs (8) are provided on the rotating shafts of the first motor and the second motor. 6. The wireless charging system for automobiles according to claim 1, characterized in that an electric movable cover (19) is provided at the opening of the recess. 7. The wireless charging system for automobiles according to claim 1, characterized in that there are two movable covers, a push rod for driving the movable cover is provided in the recess, and the upper end of the push rod is connected with the movable cover. connected to the ground. 8. The wireless charging system for automobiles according to claim 7, characterized in that an anti-pressure mechanism (10) is provided at the opening of the recess, and when the movable cover is flattened, the anti-pressure mechanism can support the movable cover. 9. The vehicle wireless charging system according to claim 8, characterized in that the anti-pressure mechanism is in the shape of a box. 10. The vehicle wireless charging system according to any one of claims 1 to 9, characterized in that it also includes a control unit, the control unit includes an MCU, and both the lateral translation mechanism and the longitudinal translation mechanism are controlled by the MCU; the MCU is also connected with communication module.