CN107696899A - A kind of quick charge device, system and charge control method - Google Patents

Abstract

A fast charging device related to the present invention mainly consists of a main control board, a touch liquid crystal display, a network communication module, a GPS module, an AC-DC module, a relay module, a charging terminal, a bidirectional DC-DC module, an energy storage unit and Composition of RFID reader. It also relates to a fast charging system, which includes a fast charging device; and also includes a fixed bluetooth module and a device to be charged. It also relates to a charging control method using a fast charging system, which mainly includes an identification step, an electric output step or a reverse charging step. The beneficial effects of the present invention are: fast charging, using fast charging methods such as power lithium batteries, and adding an energy storage unit such as a supercapacitor in the charging device, can charge the charging device with greater power, and reduce The impact on the input end; automatic identification, the advantages of matching between the device to be charged and the fast charging device; the system has the advantages of reverse charging the fast charging device.

Description

A fast charging device, system and charging control method

technical field

The invention relates to the field of charging system and management technology, in particular to a fast charging device, system and charging control method.

Background technique

The conventional charging method is to charge the energy storage device with a current of 0.1C-0.5C. The charging time of this charging method is as long as several hours. In order to achieve fast charging, the charging current must be increased, especially in the early stage of charging. The current is generally 2C-5C. The conventional method is to equip a high-power switching power supply to provide a large current, resulting in a higher cost of the charging equipment, and in order to fully charge the battery, the current changes greatly during the charging process, which leads to a high power consumption of the charging equipment. The changes are also relatively large, forming large fluctuations on the power grid and affecting the operation of the power grid.

The invention with the application number of 2013104457651 discloses a fast charging device with a buck-boost system. The built-in energy storage unit and the external energy storage device are connected to each other through a bidirectional buck-boost circuit, which can realize fast charging. A bidirectional buck-boost circuit is set between the energy storage device and the external energy storage device, which facilitates the charging of the external energy storage device by the built-in energy storage device.

The invention with the patent application number 2017100064721 discloses an intelligent charging device system, which provides a solution for monitoring the status of the charging device.

The invention with the patent application number 201710150652 provides a charging method and management platform, a charging device, and an electric vehicle. It relates to the technical field of charging management and can intelligently manage the charging process of electric vehicles. The client of the electric vehicle to be charged sends an authentication request to the management platform, carrying its own identification information; the management platform authenticates the electric vehicle to be charged according to the identification information of the electric vehicle to be charged; The electric vehicle to be charged is charged; the designated charging device is assigned by the management platform to charge the electric vehicle to be charged; the electric vehicle to be charged is charged through the designated charging device.

At present, there is no technology that can integrate fast charging and reverse charging; accurately complete the matching of the charging device and the device to be charged; fast charging is less dependent on the power grid, and can reach a charging power that is several times the input terminal's capacity; it can be easily expanded Energy storage level and other functions.

Contents of the invention

Aiming at the technical problems and demands mentioned in the prior art, the present invention provides a fast charging device, system and charging control method.

A fast charging device, mainly composed of a main control board, a touch LCD display, a network communication module, a GPS module, an AC-DC module, a relay module, and a charging terminal; it also includes a bidirectional DC-DC module and an energy storage unit; The A input and output terminals of the bidirectional DC-DC power supply module and the charging terminal are connected in parallel to the output terminals of the AC-DC power supply module; the B input and output terminals of the bidirectional DC-DC power supply module are connected to the energy storage unit ;The bidirectional DC-DC power supply module has the characteristics of forward boosting from A to B and reverse stepping down from B to A. When the voltage is reversed, the main control board can digitally adjust the output voltage and current of the bidirectional DC-DC power supply module. ; The main control board controls the on-off between the bidirectional DC-DC power supply module, the AC-DC power supply module and the charging terminal by controlling the relay module; it is characterized in that it also includes an RFID reader, which is connected to the main control panel.

A fast charging system, comprising a fast charging device; also includes a fixed bluetooth module; also includes a device to be charged; the device to be charged and the fast charging device can be connected through a charging terminal; it is characterized in that the device to be charged is an electric bicycle, The charging system on the car includes BMS, on-board rechargeable battery, on-board Bluetooth module, and RFID electronic tag.

A charging control method, using a fast charging system, is characterized in that it mainly includes an identification step, an electric output step or a reverse charging step:

Identification steps:

The first step: the electric bicycle continuously releases bluetooth broadcasts through the vehicle-mounted bluetooth module, and the fixed bluetooth module listens to the broadcast information of the vehicle-mounted bluetooth module to read the vehicle information of the electric bicycle and complete the wireless identification of the electric bicycle;

Step 2: The electric bicycle enters the charging area of the charging device, and the fast charging device reads the information carried by the RFID electronic tag through the RFID reader;

Step 3: Insert the charging plug, the voltage sensor in the charging device measures the voltage of the on-board rechargeable battery, and check whether the voltage of the on-board rechargeable battery is consistent with the information read in the first and second steps;

Step 4: The user selects reverse charging or output power for the electric bicycle on the handheld terminal;

If electricity is output, then perform the steps of outputting electricity:

Step 1: Set the charging time on the handheld terminal and complete the payment;

Step 2: After the server confirms that the payment by the handheld terminal is successful, the command is sent to the main control board through the network;

Step 3: The main control board controls to turn on the AC-DC and DC-DC to charge the on-board rechargeable battery with the matching voltage and current in the third step above, and detect the charging voltage and current in real time during the charging process.

The beneficial effects of the present invention are:

1. Fast charging, using fast charging methods such as power lithium batteries, and adding energy storage units such as supercapacitors and power lithium batteries to the charging device, can charge the charging device with greater power and reduce the load on the charging device. impact on the grid.

2. Automatic identification, through Bluetooth, NFC, RFID and wireless networking, etc., it enables automatic and manual matching between the charging device and the charging device.

3. Convenient layout: Through wireless network, GPS access, etc., the physical layout can be clearly fed back in the user's APP, which is convenient for users to plan their routes most effectively.

4. According to the choice of charging or reverse charging according to customer needs, it can collect electric energy in a trickle and scattered form.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a block diagram of the circuit structure of the present invention.

detailed description

Typical implementations of the present invention will be described below in conjunction with specific drawings.

As shown in Figure 1:

The present invention is mainly composed of a main control board, a touch liquid crystal display screen, a network communication module, a GPS module, an AC-DC module, a relay module, and a charging terminal; it also includes a bidirectional DC-DC module and an energy storage unit; the bidirectional DC -The A input and output terminals of the DC power supply module and the charging terminals are connected in parallel to the output terminals of the AC-DC power supply module; the B input and output terminals of the bidirectional DC-DC power supply module are connected to the energy storage unit; the bidirectional DC- The DC power module has the characteristics of forward step-up from A to B and reverse step-down from B to A. When reverse step-down, the output voltage and current of the main control board to the bidirectional DC-DC power supply module are digitally adjustable; the main control board By controlling the relay module, the on-off between the bidirectional DC-DC power module, the AC-DC power module and the charging terminal is controlled; an RFID reader is also included, and the RFID reader is connected to the main control board.

In the present invention, the main control board is preferably developed using the Arduino platform. By virtue of its convenient, flexible, and easy-to-apply open source electronic prototype platform, developers can reduce their understanding and dependence on hardware and focus on software program development. Arduino consists of hardware (various models of Arduino boards) and software (ArduinoIDE). Its classic version Arduino UNOR3 has 14 I/O ports, which can meet the needs of the present invention for the number of I/O ports; supports ISP download; uses ATmega328 microprocessor, has a computing rate of 20MHz, and has a memory capacity of 2KBRAM. The requirements of the present invention can be well met.

The network communication module is preferably built based on WIFI, GPRS, WLAN and other networking methods. The present invention mainly relies on the APP installed on the client's mobile terminal to realize payment, query, charge and discharge control and other control functions. Therefore, the present invention needs to realize networking through WIFI, GPRS, WLAN and other means.

The GPS module realizes the physical positioning function of the present invention, which is convenient for the user to query the physical location of each charging system on the APP client.

Feature of the present invention has three points in summary:

1. Set up a bidirectional DC-DC module.

2. Built-in energy storage unit.

3. Relay module.

Control the on-off between the bidirectional DC-DC power module, the AC-DC power module and the charging terminal. The relay module supports power greater than 1000W.

By default, the charging voltage of the built-in energy storage unit in the present invention is higher; the voltage of the external energy storage device is lower.

Allow users to choose independently through the APP, whether to charge from the inside to the outside or feed power from the outside to the inside.

When charging from the inside out, on the one hand, the AC-DC module transforms the AC power into a voltage DC-V1, and the bidirectional DC-DC power supply module transforms the DC voltage DC-V2 of the built-in energy storage unit into a voltage DC-V1, which is controlled by the main The control board controls the opening of the relay module, and the main control board controls the output of the bidirectional DC-DC power supply module, and the two jointly charge the external energy storage device with the voltage DC-V1.

When feeding power from the outside to the inside, the DC voltage DC-V1 is boosted to the voltage DC-V2 through the step-up of the bidirectional DC-DC power supply module, and the main control board controls the bidirectional DC-DC power supply module to output inward, so that the built-in The energy storage unit feeds power.

As a preferred embodiment 1: a power management unit BMS is set in the energy storage cell unit; the BMS communicates with the main control board through I2C, UART or CAN bus; it is characterized in that the BMS includes a temperature sensor and a current and voltage monitoring module. Communication with the main control board in the form of a bus can make the number of battery cells unlimited within a certain range, thus providing a technical possibility for the expansion of the internal energy storage capacity.

In the energy storage cell unit, the cells are ternary lithium batteries, super capacitors, lithium iron phosphate batteries or lithium titanate batteries; each cell is connected in series or in parallel to form a relatively independent battery pack to obtain the required voltage and capacity .

By setting permanent magnets on the battery pack casing, two battery packs can be connected at the end, and parallel connection can be realized through the connecting contact terminals of the connecting parts, so as to realize the adjustment of electric energy storage.

The input end of the AC-DC module is provided with a power metering module, and the main control board collects the power and power flowing through the AC-DC module.

A fast charging system, comprising the described fast charging device; a fast charging device also includes a fixed bluetooth module connected to the main control board; also includes a device to be charged; the device to be charged and the fast charging device can pass The charging terminals are connected; it is characterized in that the device to be charged is an electric bicycle, and the charging system on the car includes a BMS, a car rechargeable battery, a car bluetooth module, and an RFID electronic tag.

The fixed Bluetooth module and the vehicle-mounted Bluetooth module realize short-distance communication through the broadcast function, so as to realize the identification of vehicle information by the fixed Bluetooth module through the vehicle-mounted Bluetooth module. And through the mobile phone client to remind or recommend the rider. But the Bluetooth module realizes many-to-many communication.

The RFID electronic tag is to realize one-to-one short-distance communication, further identify and match the information of the vehicle and the fixed electric pile, and provide technical support for accurate charging.

A fast charging system, the battery is a power lithium battery; a wireless charging transmitting coil is set on the fast charging device, and a wireless charging receiving coil corresponding to the transmitting coil is set on the spoke of the electric bicycle wheel . Confirm the vehicle information through the above Bluetooth and RFID, and select the steps of charging and discharging through the APP client, so as to realize the corresponding charging and discharging functions.

A charging control method, using a fast charging system, mainly includes an identification step, a step of outputting electricity or a step of reverse charging:

Identification steps:

The first step: the electric bicycle continuously releases bluetooth broadcasts through the vehicle-mounted bluetooth module, and the fixed bluetooth module listens to the broadcast information of the vehicle-mounted bluetooth module to read the vehicle information of the electric bicycle and complete the wireless identification of the electric bicycle;

Step 2: The electric bicycle enters the charging area of the charging device, and the fast charging device reads the information carried by the RFID electronic tag through the RFID reader;

Step 3: Insert the charging plug, the voltage sensor in the charging device measures the voltage of the on-board rechargeable battery, and check whether the voltage of the on-board rechargeable battery is consistent with the information read in the first and second steps;

Step 4: The user selects reverse charging or output power for the electric bicycle on the handheld terminal;

If electricity is output, then perform the steps of outputting electricity:

Step 1: Set the charging time on the handheld terminal and complete the payment;

Step 2: After the server confirms that the payment by the handheld terminal is successful, the command is sent to the main control board through the network;

The third step: the main control board controls to turn on the AC-DC and DC-DC to charge the vehicle rechargeable battery with the voltage and current matched in the third step above, and detect the charging voltage and current in real time during the charging process;

Step 4: When the set charging time is up, fully charged or manually set to stop, the charging will end;

If reverse charging, perform reverse charging steps:

Step 1: Turn on the relay;

Step 2: The electric energy in the on-board rechargeable battery of the electric bicycle is charged into the energy storage power supply after being boosted by bidirectional DC-DC;

Step 3: The main control board monitors the charged power and counts it into the user account.

In the method for identifying the electric bicycle and the charging device, the RFID radio frequency module in the charging device reads the information in the RFID electronic tag on the vehicle to the main control system for analysis.

The method of RFID recording information is as follows: the recorded information is; the information carried by the RFID electronic tag includes the vehicle manufacturer code, the type of battery carried, the voltage and current parameters of the charging rating, and the type of plug.

In addition, the embodiment of the present invention is an example showing the contents of the present invention, and may be further combined with other known techniques, and may be configured by omission of a part or the like without departing from the scope of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (8)

1. A kind of 1. quick charge device, mainly by master control borad, touching liquid-crystal display screen, network communication module, GPS module, AC-DC Module, relay module, charging termination composition；It is characterized in that：

   Also include bi-directional DC-DC module and energy-storage units；

   The A input/output terminals of described bi-directional DC-DC power module and charging termination are connected to AC-DC power module with being in parallel Output end；

   The B input/output terminals of described bi-directional DC-DC power module are connected with energy-storage units；

   Bi-directional DC-DC power module, there is the feature that the positive boostings of A to B, B to A are reversely depressured, when being reversely depressured, master control borad pair The output voltage current digital of bi-directional DC-DC power module is adjustable；

   Master control borad is by control relay module, so as to control bi-directional DC-DC power module, AC-DC power module and charging end Break-make between head；

   Characterized by further comprising RFID reader, RFID reader is connected to master control borad.
2. 2. a kind of quick charge device according to claim 1, it is characterised in that power supply pipe is set in energy storage battery core unit Manage unit B MS；Described BMS is communicated by I2C, UART or CAN with master control borad；It is characterized in that BMS includes temperature Spend sensor, Current Voltage monitoring modular.
3. A kind of 3. quick charge device according to claim 1 or 2, it is characterised in that in energy storage battery core unit, its battery core For ternary lithium battery, super capacitor, ferric phosphate lithium cell or lithium titanate battery；

   Each battery core forms relatively independent battery pack by series and parallel, to obtain required voltage and capacity；

   By setting permanent magnet on battery-pack exterior casing so that battery pack can finish up linking two-by-two, and pass through junction Wiring contact terminal, which is realized, carries out parallel connection, so as to realize the regulation of electric energy reserves.
4. 4. a kind of quick charge device according to claim 3, it is characterised in that described AC-DC module input is set Module for metering electric quantity, master control borad are acquired to the electricity and power that flow through AC-DC module.
5. 5. a kind of quick charging system, including a kind of quick charge device described in claim 1 or 4；It is characterized in that：It is a kind of Also include the fixation bluetooth module being connected with master control borad in quick charge device；

   Also include device to be charged；Device to be charged can be connected with quick charge device by termination of charging；

   It is characterized in that device to be charged is electric bicycle, the charging system on car includes BMS, vehicle-mounted charge battery, vehicle-mounted Bluetooth module, RFID.
6. A kind of 6. charge control method, using a kind of quick charging system as claimed in claim 5, it is characterised in that main bag Identification step is included, exports electric step or reverse charge step：

   Identification step：

   The first step：Described electric bicycle continues publishing Bluetooth broadcast, the fixed bluetooth module by on-vehicle Bluetooth module The broadcast message of on-vehicle Bluetooth module is listened to, to read the information of vehicles of electric bicycle, is completed to the wireless of electric bicycle Identification；

   Second step：Electric bicycle enters described charging device charged area, and quick charge device is read by RFID reader The information for taking RFID to carry；

   3rd step：Charging plug is inserted, the voltage sensor measurement vehicle-mounted charge cell voltage in charging device, verification is vehicle-mounted The charged battery voltage the information whether first step, second step are read is consistent；；

   4th step：User still exports electricity on handheld terminal to electric bicycle selection reverse charge；

   If output electricity, performs and exports electric step：

   The first step：Charging duration is set on handheld terminal, and completes to pay；

   Second step：After server confirms that handheld terminal is paid successfully, instruction is issued by master control borad by described network；

   3rd step：The voltage x current that master control borad control opens AC-DC and DC-DC to match using above-mentioned 3rd step is to described Vehicle-mounted charge battery is charged, and detects charging voltage, current conditions in charging process in real time.

   4th step：The charging interval of setting to, be full of or stopping situation being set manually when, charging terminates；

   If reverse charge, reverse charge step is performed：

   The first step：Open relay；

   Second step：Electric energy in the vehicle-mounted charge battery of electric bicycle is filled with accumulation power supply after bi-directional DC-DC boosts；

   3rd step：The electricity that master control board monitoring is filled with, is included in user account.
7. A kind of 7. charge control method as claimed in claim 6, it is characterised in that electric bicycle knows method for distinguishing with charging device, RFID radio-frequency modules in charging device, which read the information in RFID on vehicle in master control system, to be parsed.
8. A kind of 8. charge control method as claimed in claims 6 or 7, it is characterised in that the method for RFID information-recordings is, The information of record is；The information that RFID carries has the specified voltage of car vendor code, the battery types carried, charging Current parameters, type of plug.