HK1237310A - Load balancing intelligent charging box - Google Patents

Description

Load balancing intelligent charging box

Technical Field

The invention relates to the technical field of electric vehicle charging devices, in particular to an intelligent charging box with balanced load.

Background

Along with green energy industry development, electric motor car quantity is increasing rapidly, and the electric pile is all installed to more and more places such as market, underground parking garage and fills the electric pile and satisfy the demand of charging of electric motor car.

The existing electric energy vehicle chargers are vertically installed or fixed on a wall, and the electric energy vehicle and the charger are connected through an electric energy vehicle charging line, so that long-time charging activities are carried out. However, in a large number of large parking places, a parking space for installing a charging pile can be occupied by a non-charging electric vehicle, so that the electric vehicle needing to be charged cannot be charged; meanwhile, a plurality of power supplies led out from a power supply room in a plurality of places cannot be realized or the realization cost is greatly increased, so that a plurality of single charging piles cannot be installed; at the moment, if a plurality of customers charge, some electric vehicles need to wait, and the current led out from the site is not fully utilized by the charging electric vehicle, so that the problems of resource waste and the like are caused.

Disclosure of Invention

The invention mainly aims to provide an intelligent charging box with balanced load, so as to solve the problems that power supply resources are unreasonable to distribute and parking spaces of a parking lot cannot be effectively provided for electric vehicles needing to be charged.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a load-balanced smart charging device, comprising: RFID (radio frequency identification) module, charge controller, charging server, route server, wherein:

an RFID (radio frequency identification) module reads account information sent by a charging card through a radio frequency module and sends the account information to the charging controller;

the charging controller sends the account information to the charging server;

the charging server judges whether the electric vehicle corresponding to the charging card is allowed to be charged according to the charging information, and if the electric vehicle corresponding to the charging card is allowed to be charged, the charging server sends a control signal for allowing charging to the routing server;

after receiving the control signal allowing charging, the routing server judges whether to charge the current electric vehicle according to the number of the electric piles which are currently charged, the magnitude of the used current and the magnitude of the residual current, and then sends information whether to allow charging and information about the allowed charging current to the charging controller;

the charging controller receives the information whether charging is allowed and the information of the charging current allowed from the routing server, judges whether charging is allowed, and controls the electric pile to charge the electric vehicle through task scheduling and the information of the charging current allowed if charging is allowed; the charging current of the electric vehicle can be controlled by a PWM (pulse width modulation) wave during the charging process.

Preferably, the charging controller transmits the charging information to the charging server; the method specifically comprises the following steps:

and the routing server forwards the charging information on the charging controller to a charging server.

Preferably, after the routing server forwards the charging information on the charging controller to the charging server, the routing server receives the user confirmation permission information from the charging server and issues an instruction to the charging controller to permit the charging controller to be docked with the user intelligent mobile device and grant the user operation right.

Preferably, when the first electric pile allows and starts charging, the charging server firstly gives the first electric pile the lowest charging current through the charging controller, and then distributes the residual current to the electric pile being charged, if the residual current is greater than the maximum current allowed by the first electric pile, the first electric pile is adjusted to be charged by the allowed maximum current;

when a new electric pile starts to be charged and the existing electric pile is charged, the charging server changes the current of the charging electric pile into the lowest charging current through the charging controller, judges whether the residual current is larger than the lowest charging current, if so, the new electric pile is allowed to be charged with the lowest charging current, and if not, the new electric pile is not allowed to start to be charged; after the current electric piles enter charging, averagely distributing residual current to the electric piles being charged, and if the residual current is greater than the maximum current allowed by all the electric piles being charged, adjusting all the electric piles being charged to be charged with the allowed maximum current;

when a vehicle stops charging in the charging process, the charging server superposes current used when the charging of the charging electric pile is stopped at present on residual current through the charging controller, then the residual current is distributed to the charging electric pile, and if the residual current is larger than the maximum current allowed by all the charging electric piles, all the charging electric piles are adjusted to be charged at the allowed maximum current.

The technical scheme of the invention has the following beneficial effects: the intelligent charging box with balanced load provided by the invention enables a field power supply room to be only required to lead out a power supply line to a case; the car owner can stop the car in front of any charging pile parking space under the car owner box, and does not need to worry that the only parking space cannot be charged after being occupied; after a car owner stops the car at a parking place where a power supply line of an electric pile can be pulled to, a charging wire on a charger is taken down and connected to the electric car, and the electric car can be charged by a mobile phone APP or a special charging card; when a plurality of vehicles are charged, the charging box can equally distribute the field current to the electric vehicle which is being charged.

Drawings

Fig. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An embodiment of the present invention provides an intelligent charging device with balanced load, as shown in fig. 1, the device includes: an RFID (radio frequency identification) module, a charging controller (the charging controller may be an MCU (micro control unit), a computer, etc.), a charging server (the charging server may be a computer, etc.), a routing server (the routing server may be a controller, such as an MCU (micro control unit), or a computer); the functions of any two or three of the charge controller, the charge server, and the route server may be implemented on the same MCU (micro control unit), computer, or computer, wherein:

the charging card is used for charging the battery, and the charging card is used for charging the battery and transmitting the charging information to the charging controller; the charging information includes: the ID number of the charging card or the electric vehicle, and the required current.

The charging controller transmits the charging information to the charging server; in other embodiments, more specifically, the routing server forwards the charging information on the charging controller to the charging server. In another embodiment, based on the above embodiment, further, after the routing server forwards the charging information on the charging controller to the charging server, after the routing server receives the user confirmation permission information from the charging server, the routing server issues an instruction to the charging controller to permit the charging controller to interface with the user smart mobile device and grant the user operation permission.

The charging server judges whether the electric vehicle corresponding to the charging card is allowed to be charged or not according to the charging information, and if the charging card is allowed to be charged, the charging server sends a control signal for allowing charging to the routing server; in another embodiment, based on the above embodiment, further, after receiving the user confirmation permission information from the charging server, the routing server issues an instruction to the charging controller to permit the charging controller to interface with the user smart mobile device and grant the user operation permission, and the charging server determines whether to allow the electric vehicle corresponding to the charging card to be charged according to the charging information and the user confirmation permission information.

After receiving the control signal allowing charging, the routing server sends a charging signal to the charging controller;

and the charging controller receives the charging signal sent by the routing server, judges whether to charge the current user according to the number of the current charging electric piles, the magnitude of the used current and the magnitude of the residual current, controls the electric piles to charge the electric vehicle if the current charging electric piles are allowed to charge the electric vehicle, and sends out PWM (pulse width modulation) waves for the standard according to the charging current information to change the charging current of the electric vehicle so as to control the charging current of the electric vehicle.

The detailed flow of the charging operation principle of the charging box is introduced as follows:

a user starts charging through the intelligent charging card, before the intelligent charging card is placed in the RFID (radio frequency identification) module, when account information on the intelligent charging card is sent to the RFID (radio frequency identification) module through the radio frequency module;

the RFID (radio frequency identification) module sends the read account information to the charging controller through a serial port communication technology;

after receiving account information sent by an RFID (radio frequency identification) module, a charging controller judges whether an electric pile is in charging, if so, judges whether the account information is consistent with the account information in charging, and if so, stops the charging service of the current account;

when the charging controller receives account information sent by an RFID (radio frequency identification) module and the electric pile is not in a charging state currently, the account information is sent to a routing server through an LWIP (lightweight TCP/IP protocol) network communication technology (or through other network communication technologies);

after receiving the charging information sent by the charging controller, the routing server sends the charging information to the charging server through 3/4G network communication technology (or through other network communication technologies);

the charging server judges the received account information, if the electric vehicle corresponding to the account is allowed to be charged, a control signal allowing charging is sent to the routing server through 3/4G network communication technology (or other network communication technologies), otherwise, a control signal not allowing charging is sent to the routing server through 3/4G network communication technology (or other network communication technologies);

after receiving the permission control signal sent by the charging server, the routing server judges whether to charge the current electric vehicle according to the number of the current charging electric piles, the magnitude of the used current and the magnitude of the residual current, and if the permission is allowed, the routing server sends the information whether to allow the charging to the charging controller through an LWIP (lightweight TCP/IP protocol) communication technology;

the charging controller receives the information whether charging is allowed and the information of the charging current which is allowed from the routing server, judges whether charging is allowed, and prompts the reason of not allowing charging on a screen of the electric pile if charging is not allowed; if the charging is allowed, controlling the electric pile to charge the electric vehicle through task scheduling and the allowed charging current information; the charging current of the electric vehicle can be controlled by a PWM (pulse width modulation) wave during the charging process.

Wherein, can control electric motor car charging current through PWM (pulse width modulation) ripples in the charging process, specifically include: each site has a current value introduced into the charging box, namely the total current, the current used by the electric pile in the current charging is the used current, and the residual current is obtained by subtracting the current used current from the total current; the following examples describe in detail the process of controlling the charging current of an electric vehicle by means of PWM (pulse width modulation) waves:

step 1, when a first electric pile is allowed and starts to be charged, a charging server firstly gives the lowest charging current to the first electric pile through a charging controller, then distributes residual current to the electric pile being charged, and if the residual current is larger than the maximum current allowed by the first electric pile, the first electric pile is adjusted to be charged with the allowed maximum current;

step 2, when a new electric pile starts to be charged and an existing electric pile is charged, the charging server changes the current of the charging electric pile into the lowest charging current through the charging controller, judges whether the residual current is larger than the lowest charging current (if the lowest charging current is 7A, if the residual current is smaller than 7A, the electric vehicle cannot start to be charged), if so, the new electric pile is allowed to be charged with the lowest charging current, and if not, the new electric pile is not allowed to start to be charged; after the two electric piles are charged, averagely distributing residual current to the electric piles being charged, and if the residual current is greater than the maximum current allowed by the electric piles, adjusting all the electric piles being charged to be charged with the allowed maximum current;

step 3, when a new electric pile begins to charge and the existing electric pile is in the process of charging, repeating the process of the step 2;

and 4, when the charging of a vehicle is stopped (charging is finished or the charging of the electric vehicle is finished) in the charging process, when the charging of the vehicle is stopped (charging is finished or the charging of the electric vehicle is finished) in the charging process, the charging server superposes the current used when the charging of the charging electric pile is stopped currently on the residual current through the charging controller, then the residual current is distributed to the electric pile being charged, and if the residual current is larger than the maximum current allowed by all the electric piles being charged, all the electric piles being charged are adjusted to be charged at the allowed maximum current.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (4)

1. A load-balanced intelligent charging device, comprising: RFID module, charge controller, charging server, route server, wherein:

the RFID module reads account information sent by the charging card through the wireless radio frequency module and sends the account information to the charging controller;

the charging controller sends the account information to the charging server;

the charging server judges whether the electric vehicle corresponding to the charging card is allowed to be charged according to the charging information, and if the electric vehicle corresponding to the charging card is allowed to be charged, the charging server sends a control signal for allowing charging to the routing server;

after receiving the control signal allowing charging, the routing server judges whether to charge the current electric vehicle according to the number of the electric piles which are currently charged, the magnitude of the used current and the magnitude of the residual current, and then sends information whether to allow charging and information about the allowed charging current to the charging controller;

the charging controller receives the information whether charging is allowed and the information of the charging current allowed from the routing server, judges whether charging is allowed, and controls the electric pile to charge the electric vehicle through task scheduling and the information of the charging current allowed if charging is allowed; the charging current of the electric vehicle can be controlled by a PWM (pulse width modulation) wave during the charging process.

2. The load-balanced intelligent charging device according to claim 1, wherein the charging controller transmits the charging information to the charging server; the method specifically comprises the following steps:

and the routing server forwards the charging information on the charging controller to a charging server.

3. The load-balanced intelligent charging device of claim 2, wherein after the routing server forwards the charging information on the charging controller to the charging server, the routing server receives the user confirmation permission information from the charging server and issues an instruction to the charging controller to permit the charging controller to interface with the user intelligent mobile device and grant the user operation permission.

4. The load-balanced intelligent charging apparatus according to claim 2,

when the first electric pile allows and starts to charge, the charging server firstly gives the lowest charging current to the first electric pile through the charging controller, then distributes residual current to the electric pile which is being charged, and if the residual current is larger than the maximum current allowed by the first electric pile, the first electric pile is adjusted to be charged with the allowed maximum current;

when a new electric pile starts to be charged and the existing electric pile is charged, the charging server changes the current of the charging electric pile into the lowest charging current through the charging controller, judges whether the residual current is larger than the lowest charging current, if so, the new electric pile is allowed to be charged with the lowest charging current, and if not, the new electric pile is not allowed to start to be charged; after the current electric piles enter charging, averagely distributing residual current to the electric piles being charged, and if the residual current is greater than the maximum current allowed by all the electric piles being charged, adjusting all the electric piles being charged to be charged with the allowed maximum current;

when a vehicle stops charging in the charging process, the charging server superposes current used when the charging of the charging electric pile is stopped at present on residual current through the charging controller, then the residual current is distributed to the charging electric pile, and if the residual current is larger than the maximum current allowed by all the charging electric piles, all the charging electric piles are adjusted to be charged at the allowed maximum current.