Flexible load control device for charging

Abstract

The utility model relates to the field of power load management, and provides a flexible load control device for charging, which comprises a charging pile and a vehicle-mounted device, the charging pile is matched with the vehicle-mounted device through wireless communication, after the vehicle-mounted device is matched, the vehicle electric quantity information is transmitted to the charging pile, the charging pile comprises a main control module, a wireless communication module, a wireless communication module and a wireless communication module, the vehicle information receiving module is connected with the main control module and is used for communicating with the vehicle-mounted device, acquiring electric quantity information and transmitting the electric quantity information to the main control module; the Internet of Things module is connected with the main control module and is used for acquiring peak and valley time information of the power grid and transmitting the peak and valley time information to the main control module; the controlled end of the charging module is connected with the main control module, the input end is connected with a power supply, and the output end charges an electric vehicle through a charging interface; the man-machine interaction module is used for interaction between the charging pile and a vehicle owner; the system can cooperate with a power grid to adjust the flexible load for charging the electric vehicle.

Description

Technical Field

[0001] The utility model relates to the field of power load management, and in particular to a flexible load control device for charging. Background Art

[0002] With the development of economy, the number of electric vehicles in cities is increasing. Many car owners install charging piles in their own parking spaces to facilitate charging of electric vehicles. As the electricity load in the core areas of cities continues to increase year by year, and the peak-to-valley difference in load widens, how to balance the power grid through flexible load regulation is of great significance. The management of electric vehicle charging is also a part of flexible load regulation. Most of the existing household electric vehicle charging piles only have the charging management method of plug-and-charge, and do not have the regulation and management of the flexible load of the power grid. Utility Model Content

[0003] The problem solved by the utility model is how to provide a flexible load control device for charging which can coordinate with a power grid to adjust the charging flexible load.

[0004] In order to solve the above problems, the utility model provides a flexible load control device for charging, comprising: a charging pile and a vehicle-mounted device, the charging pile and the vehicle-mounted device are matched through wireless communication, and after matching, the vehicle-mounted device transmits the vehicle power information to the charging pile, and the charging pile comprises:

[0005] Main control module;

[0006] A vehicle information receiving module, connected to the main control module, for communicating with the vehicle-mounted device, acquiring power information and transmitting it to the main control module;

[0007] An Internet of Things module, connected to the main control module, for obtaining peak and valley time information of the power grid and transmitting the information to the main control module;

[0008] The charging module has a controlled end connected to the main control module, an input end connected to a power source, and an output end that charges the electric vehicle through a charging interface;

[0009] The human-computer interaction module is used for the interaction between the charging pile and the car owner, is connected to the main control module, obtains the charging time period information set by the main control module, and displays it to the car owner.

[0010] Furthermore, the Internet of Things module includes an Ethernet circuit and a 4G communication circuit connected to the main control module.

[0011] Furthermore, the human-computer interaction module includes a key circuit and a display screen circuit connected to the main control module.

[0012] Furthermore, the human-computer interaction module includes a mobile terminal APP, and the car owner interacts with the main control module through the mobile terminal APP.

[0013] Furthermore, the charging module includes an input protection circuit, a rectifier current, a DC drive output circuit, a drive control circuit and an output interface circuit. The input end of the input protection circuit is connected to a power supply, and the output end is connected to the input end of the DC drive output circuit via the above-mentioned rectifier circuit. The output end of the DC drive output circuit is connected to the output interface circuit. The input end of the drive control circuit is connected to the main control module, and the output end is connected to the controlled end of the DC drive output circuit, so that according to the signal of the main control module, a corresponding PWM drive signal is sent to the DC drive output circuit, so that the DC drive output circuit adjusts the output size. The output interface circuit is connected to the charging interface.

[0014] Furthermore, the charging module also includes a metering circuit, the detection end of the metering circuit is connected to the output end of the input protection circuit, and the output end is connected to the main control module, for transmitting the detected power information to the main control module.

[0015] Furthermore, the metering circuit includes a metering chip, and a voltage transformer and a current transformer connected to the metering chip, and the metering chip is connected to the main control module.

[0016] Furthermore, the charging pile also includes a storage module, which is connected to the main control module and is used to store vehicle information and owner setting information.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The charging pile can obtain the peak and trough time information of electricity consumption in the current season in the city through the Internet of Things. When the car owner parks in his own parking space, the charging pile is successfully paired with the on-board device. The charging pile reads the vehicle information and can obtain the charging time required through the remaining power of the car. When charging, the car owner can choose between instant charging mode and intelligent control mode through the interactive module. In the intelligent control mode, the main control module will try to arrange charging during the low electricity consumption period according to the required time, user habit settings and power grid conditions, and display the charging time period information to the user. After the user confirms, the intelligent control charging is started. By adjusting the time of the flexible load of electric vehicle charging as mentioned above, the grid coordination is achieved, which can effectively reduce the peak pressure of the urban power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the principle structure of a charging pile in an embodiment of the utility model;

[0020] Figure 2This is a schematic diagram of the principle structure of the vehicle-mounted device of an embodiment of the utility model;

[0021] Figure 3 The figure is a schematic diagram of the principle structure of a charging module according to an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1-on-board device; 2-main control module; 3-charging module; 4-vehicle information receiving module; 5-Internet of Things module; 6-human-computer interaction module; 7-charging interface; 8-storage module; 11-vehicle interface module; 12-on-board processing module; 13-vehicle information sending module; 31-input protection circuit; 32-rectifier circuit; 33-DC drive output circuit; 34-output interface circuit; 35-drive control circuit; 36-metering circuit;. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0027] like Figure 1 As shown, the utility model provides a flexible load control device for charging, comprising: a charging pile and a vehicle-mounted device 1, wherein the charging pile and the vehicle-mounted device 1 are matched through wireless communication, and after matching, the vehicle-mounted device 1 transmits the vehicle power information to the charging pile, and the charging pile comprises:

[0028] Main control module 2;

[0029] A vehicle information receiving module 4 is connected to the main control module 2 and is used to communicate with the vehicle-mounted device 1 to obtain power information and transmit it to the main control module 2;

[0030] The Internet of Things module 5 is connected to the main control module 2 and is used to obtain the peak and valley time information of the power grid and transmit it to the main control module 2;

[0031] The charging module 3, the controlled end is connected to the main control module 2, the input end is connected to the power supply, and the output end charges the electric vehicle through the charging interface 7;

[0032] The human-computer interaction module 6 is used for the interaction between the charging pile and the car owner, is connected to the main control module 2, obtains the charging time period information set by the main control module 2, and displays it to the car owner.

[0033] It should be noted that the charging pile can obtain the peak and trough time information of electricity consumption in the current season in the city through the Internet of Things. When the car owner parks in his own parking space, the charging pile is successfully paired with the vehicle-mounted device 1, and the charging pile reads the vehicle information. The charging time required can be obtained through the remaining power of the car. When the car owner is charging, the instant charging mode and the intelligent control mode can be selected through the interactive module. In the intelligent control mode, the main control module 2 will try to arrange the charging to be completed during the low electricity consumption period according to the required time, user habit settings and power grid conditions, and display the charging time period information to the user. After the user confirms, the intelligent control charging is turned on. By adjusting the time of the flexible load charging of the electric vehicle as mentioned above, the grid coordination is achieved, which can effectively reduce the peak pressure of the urban power grid. Among them, the main control module 2 can use a high-performance industrial-grade CPU, such as STM32F743.

[0034] Specifically, the charging process is explained with an example: ordinary office workers are accustomed to charging after get off work, and the charging habit time can be set between the end of the first day of work and the beginning of the next day, such as 7 pm to 7 am the next day. When charging after get off work at 7 pm, the charging pile is paired with the vehicle-mounted device 1. According to the car information, it is determined that it takes 5 hours to be fully charged. The peak electricity consumption is 8 pm to 12 noon in this season. Under the intelligent control mode, the main control module 2 can be arranged to complete the charging between 0 and 5 o'clock and display it to the car owner. After the car owner confirms, the main control module 2 will control the charging module 3 to start working at 0 o'clock, and complete the charging when the power grid is low, avoiding the peak electricity consumption and realizing flexible control.

[0035] Among them, the Internet of Things module 5 includes an Ethernet circuit and a 4G communication circuit connected to the main control module 2. Through the Internet of Things, the charging pile can obtain various information of the Internet of Things, such as urban power grid information, car model information, etc., and send information to the car owner through the Internet of Things. The interaction between the main control module 2 and the car owner is completed through the human-computer interaction module 6. The human-computer interaction module 6 can be a button circuit and a display circuit connected to the main control module 2. The car owner completes the setting input and mode selection confirmation through the button screen or touch screen at the charging pile. At the same time, since the charging pile has the Internet of Things function, the car owner can also use the mobile terminal APP to complete the interaction.

[0036] The charging pile is connected to the vehicle-mounted device 1 through wireless communication, for example, Bluetooth communication. Each vehicle-mounted device 1 has a different matching name. The charging pile can match multiple electric vehicles in the home. After matching, the matching vehicle can be confirmed based on the matching connection, and then the vehicle information can be obtained according to the settings. After the network is successfully connected, the remaining power information of the vehicle will be sent to the charging pile. During the first matching, the owner is required to confirm at the charging pile and set the model of the matching vehicle and other information; accordingly, a storage module 8 needs to be set in the charging pile. The storage module 8 is connected to the main control module 2 for storing vehicle information and owner setting information, etc.

[0037] In one embodiment of the present invention, Figure 2 As shown, the vehicle-mounted device 1 includes a vehicle-machine interface module 11, a vehicle-machine processing module 12 and a vehicle information sending module 13. The vehicle-machine interface module 11 is connected to the electric vehicle system and can adopt a universal automobile communication CAN interface. The vehicle-mounted processing module 12 processes the collected power information and sends it through the vehicle information sending module 13. The vehicle information sending module 13 and the vehicle information receiving module 4 adopt the same communication matching network.

[0038] In one embodiment of the present invention, Figure 3 As shown, the charging module 3 includes an input protection circuit 31, a rectifier current, a DC drive output circuit 33, a drive control circuit 35 and an output interface circuit 34. The input end of the input protection circuit 31 is connected to the power supply, and the output end is connected to the input end of the DC drive output circuit 33 through the above-mentioned rectifier circuit 32. The output end of the DC drive output circuit 33 is connected to the output interface circuit 34. The input end of the drive control circuit 35 is connected to the main control module 2, and the output end is connected to the controlled end of the DC drive output circuit 33, so as to send a corresponding PWM drive signal to the DC drive output circuit 33 according to the signal of the main control module 2, so that the DC drive output circuit 33 adjusts the output size. The output interface circuit 34 is connected to the charging interface 7.

[0039] It should be noted that the input protection circuit 31 can be protected by a fuse and a varistor, the DC drive output circuit 33 can be a half-bridge charging circuit composed of a switch tube, and the drive control circuit 35 can send a PWM signal to the switch tube in the half-bridge charging circuit under the control of the main control module 2. The charging is started by turning on the switch tube, and the conduction angle is adjusted by changing the duty cycle of the PWM signal of the switch tube to change the size of the charging output. The output interface circuit 34 is used to connect the charging interface 7 to output the charging power supply. A filter element, such as a filter capacitor, can also be set in the output interface circuit 34 to ensure stable charging.

[0040] Furthermore, the charging module 3 also includes a metering circuit 36, the detection end of the metering circuit 36 ​​is connected to the output end of the input protection circuit 31, and the output end is connected to the main control module 2, for transmitting the detected power information to the main control module 2, the metering circuit 36 ​​includes a metering chip, and a voltage transformer and a current transformer connected to the metering chip, the metering chip is connected to the main control module 2, the voltage transformer and the current transformer collect input AC voltage and current information and transmit it to the metering chip, the metering chip transmits the power metering information to the main control module 2, wherein the electric energy metering chip model can be BL0940.

[0041] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A flexible load control device for charging, characterized in that: include: A charging pile and a vehicle-mounted device (1), wherein the charging pile and the vehicle-mounted device (1) are matched via wireless communication, and after matching, the vehicle-mounted device (1) transmits vehicle power information to the charging pile, and the charging pile comprises: Main control module (2); A vehicle information receiving module (4) is connected to the main control module (2) and is used to communicate with the vehicle-mounted device (1), obtain power information and transmit it to the main control module (2); An Internet of Things module (5) is connected to the main control module (2) and is used to obtain peak and valley time information of the power grid and transmit it to the main control module (2); A charging module (3), a controlled end connected to the main control module (2), an input end connected to a power source, and an output end for charging the electric vehicle via a charging interface (7); A human-computer interaction module (6) is used for interaction between the charging pile and the vehicle owner, is connected to the main control module (2), obtains the charging time period information set by the main control module (2), and displays it to the vehicle owner.

2. The flexible load control device for charging according to claim 1, characterized in that: The Internet of Things module (5) comprises an Ethernet circuit and a 4G communication circuit connected to the main control module (2).

3. The flexible load control device for charging according to claim 1, characterized in that: The human-computer interaction module (6) comprises a key circuit and a display screen circuit connected to the main control module (2).

4. The flexible load control device for charging according to claim 1, characterized in that: The human-computer interaction module (6) comprises a mobile terminal APP, and the vehicle owner interacts with the main control module (2) via the mobile terminal APP.

5. The flexible load control device for charging according to claim 1, characterized in that: The charging module (3) comprises an input protection circuit (31), a rectifier circuit (32), a DC drive output circuit (33), a drive control circuit (35) and an output interface circuit (34); the input end of the input protection circuit (31) is connected to a power supply, the output end is connected to the input end of the DC drive output circuit (33) via the rectifier circuit (32); the output end of the DC drive output circuit (33) is connected to the output interface circuit (34); the input end of the drive control circuit (35) is connected to the main control module (2), and the output end is connected to the controlled end of the DC drive output circuit (33) so as to send a corresponding PWM drive signal to the DC drive output circuit (33) according to a signal from the main control module (2) so as to adjust the output size of the DC drive output circuit (33); and the output interface circuit (34) is connected to the charging interface (7).

6. The flexible load control device for charging according to claim 5, characterized in that: The charging module (3) further comprises a metering circuit (36), wherein a detection end of the metering circuit (36) is connected to an output end of the input protection circuit (31), and an output end is connected to the main control module (2), and is used to transmit detected power quantity information to the main control module (2).

7. The flexible load control device for charging according to claim 6, characterized in that: The metering circuit (36) comprises a metering chip, and a voltage transformer and a current transformer connected to the metering chip, and the metering chip is connected to the main control module (2).

8. The flexible load control device for charging according to claim 1, characterized in that: The charging pile also includes a storage module (8), which is connected to the main control module (2) and is used to store vehicle information and vehicle owner setting information.

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