Charging pile ordered charging module and charging pile ordered charging management method

Abstract

The invention discloses a charging pile ordered charging module and a charging pile ordered charging management method, and relates to the technical field of charging piles, the charging pile ordered charging module comprises a single-chip microcomputer, the single-chip microcomputer is provided with a duty ratio measurement unit and a CP generation unit, the duty ratio measurement unit is connected with an amplitude limiting processing unit, and the CP generation unit is connected with the amplitude limiting processing unit; the amplitude limiting processing unit is connected with a first circuit, a second circuit and a third circuit, the first circuit is provided with a first resistor and a first electric control switch, the second circuit is provided with a second resistor and a second electric control switch, the first circuit and the second circuit are arranged in parallel, and a PE port is arranged at one common end of the first circuit and the second circuit; a diode and a CPin port are arranged on the third circuit, the single-chip microcomputer is connected with a fourth circuit, a driver, a third resistor and a CPout port are arranged on the third circuit, and the single-chip microcomputer is connected with a communication module and a power supply unit. According to the invention, ordered charging of the charging piles in the area can be realized, and then reasonable utilization of electric energy resources is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to an orderly charging module for a charging pile and an orderly charging management method for a charging pile. Background Art

[0002] The AC charging piles currently in use for home use do not have remote management functions and cannot adjust the output power according to the load of the power grid. The vast majority of residential buildings were built without consideration of electric vehicle charging and no reserved capacity. As the number of electric vehicles increases, the peak charging time at night will exceed the maximum output power of the power transformer, affecting residents' electricity consumption. How to effectively manage the existing AC charging piles is a difficult problem facing the industry. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a charging pile orderly charging module and a charging pile orderly charging management method, which can alleviate the impact of electric vehicle charging on the power grid and avoid the waste of resources caused by the scrapping of charging piles.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: In one aspect, the present invention provides a charging pile orderly charging module, comprising: A single-chip microcomputer, wherein the single-chip microcomputer has a duty cycle measurement unit and a CP generation unit, the duty cycle measurement unit is connected to a limit processing unit, the limit processing unit is connected to a first circuit, a second circuit and a third circuit, the first circuit is provided with a first resistor and a first electrically controlled switch, the second circuit is provided with a second resistor and a second electrically controlled switch, the first circuit and the second circuit are provided in parallel and a common end is provided with a PE port, the third circuit is provided with a diode and a CPin port, the single-chip microcomputer is connected to a fourth circuit, and the third circuit is provided with a driver, a third resistor and a CPout port; The single chip microcomputer is connected with a communication module and a power supply unit; It also includes a CP voltage measuring unit, which is respectively connected to the single chip microcomputer and one end of the third resistor close to the CPout port.

[0005] Furthermore, the resistance values ​​of the first resistor, the second resistor and the third resistor are 1.3k, 2.74k and 1k respectively.

[0006] Another aspect of the present invention provides a charging pile orderly charging management method, which is implemented based on the above-mentioned charging pile orderly charging module and includes the following steps: The single-chip microcomputer detects the state of the electric vehicle on the CPout line, and forwards the state of the electric vehicle to CPin by controlling the first electric control switch and the second electric control switch. After CPin outputs PWM, the single-chip microcomputer measures the duty cycle of the pulse after processing through the limit processing circuit, and uses this as the maximum duty cycle that can be output on the CPout line; After the microcontroller receives the power adjustment instruction from the remote management background through the communication module, it can adjust the charging power of the electric vehicle or stop charging by changing the duty cycle of the CP pulse on the CPout line.

[0007] Furthermore, the states of the electric vehicle end include gun plugged in, gun pulled out, and S2 switch closed.

[0008] Furthermore, the specific process of forwarding the state of the electric vehicle to the CPin by controlling the first electric control switch and the second electric control switch is as follows: When CPout is detected to be 9 Vpeak, the second electronically controlled switch is closed; when CPout is detected to be 6 Vpeak, the first electronically controlled switch and the second electronically controlled switch are closed; when CPout is detected to be 12 Vpeak, the first electronically controlled switch and the second electronically controlled switch are opened.

[0009] Compared with the prior art, the present invention has the following advantages and beneficial effects: By installing the present invention on an AC charging pile, remote management and orderly charging of the existing AC charging pile can be realized. The present invention is easy to install and does not require a lot of changes to the structure of the original charging pile. When the load of the community transformer is about to be full, the power adjustment instruction is remotely sent to the orderly charging module of the charging pile to reduce the charging power of the electric vehicle and avoid impact on the power grid, thereby realizing the "orderly charging" function required by the power supply company. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the composition structure of the present invention; Figure 2 It is a schematic diagram of the structure when the present invention is implemented.

[0011] Parts names and reference numbers: 1- single chip microcomputer, 2- duty cycle measurement unit, 3- CP generation unit, 4- limiting processing unit, 5- first circuit, 6- second circuit, 7- third circuit, 8- fourth circuit, 9- first resistor, 10- first electronically controlled switch, 11- second resistor, 12- second electronically controlled switch, 13- driver, 14- third resistor, 15- diode, 16- CP voltage measurement unit. DETAILED DESCRIPTION

[0012] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0013] On the one hand, this embodiment provides a charging pile orderly charging module, such as Figure 1 As shown, including: A single-chip computer 1, wherein the single-chip computer 1 has a duty cycle measurement unit 2 and a CP generation unit 3, the duty cycle measurement unit 2 is connected to a limit processing unit 4, the limit processing unit 4 is connected to a first line 5, a second line 6 and a third line 7, the first line 5 is provided with a first resistor 9 and a first electrically controlled switch 10, the second line 6 is provided with a second resistor 11 and a second electrically controlled switch 12, the first line 5 and the second line 6 are provided in parallel and a common end is provided with a PE port, the third line 7 is provided with a diode 15 and a CPin port, the single-chip computer 1 is connected to a fourth line 8, and the third line 7 is provided with a driver 13, a third resistor 14 and a CPout port; The single chip computer 1 is connected to a communication module and a power supply unit; wherein the power supply unit has an L port and an N port; It also includes a CP voltage measuring unit, which is respectively connected to the single chip microcomputer and one end of the third resistor close to the CPout port.

[0014] The above embodiment is further optimized, and the resistance values ​​of the first resistor 9, the second resistor 11 and the third resistor 14 are 1.3k, 2.74k and 1k respectively.

[0015] like Figure 2 As shown, in actual use, the present invention is installed on the AC charging pile to realize remote management and orderly charging of the existing AC charging pile. Specifically, the N port in the present invention is connected to the N terminal of the AC power supply in the charging pile circuit board, and the L port of the present invention is connected to the L port of the AC power supply in the charging pile circuit board; the PE port in the present invention is connected to the PE line of the charging pile, and the Cpin port of the present invention is connected to the CP line of the charging pile circuit board. The present invention is easy to install and does not require a lot of changes to the structure of the original charging pile; when the load of the community transformer is about to be full, the power adjustment instruction is remotely sent to the orderly charging module of the charging pile to reduce the charging power of the electric vehicle and avoid impact on the power grid, thereby realizing the "orderly charging" function required by the power supply company.

[0016] On the other hand, the present embodiment provides a charging pile orderly charging management method, which is implemented based on the above-mentioned charging pile orderly charging module and includes the following steps: The single-chip microcomputer detects the state of the electric vehicle on the CPout line, and forwards the state of the electric vehicle to CPin by controlling the first electric control switch and the second electric control switch. After CPin outputs PWM, the single-chip microcomputer measures the duty cycle of the pulse after processing through the limit processing circuit, and uses this as the maximum duty cycle that can be output on the CPout line; After the microcontroller receives the power adjustment instruction from the remote management background through the communication module, it can adjust the charging power of the electric vehicle or stop charging by changing the duty cycle of the CP pulse on the CPout line.

[0017] The above embodiment is further optimized, and the states of the electric vehicle end include gun plugged in, gun pulled out, and S2 switch closed.

[0018] The above embodiment is further optimized, and the specific process of forwarding the state of the electric vehicle to the CPin by controlling the first electric control switch and the second electric control switch is as follows: When CPout is detected to be 9 Vpeak, the second electronically controlled switch is closed; when CPout is detected to be 6 Vpeak, the first electronically controlled switch and the second electronically controlled switch are closed; when CPout is detected to be 12 Vpeak, the first electronically controlled switch and the second electronically controlled switch are opened.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging pile orderly charging module, characterized in that: include: A single-chip microcomputer, wherein the single-chip microcomputer has a duty cycle measurement unit and a CP generation unit, the duty cycle measurement unit is connected to a limit processing unit, the limit processing unit is connected to a first circuit, a second circuit and a third circuit, the first circuit is provided with a first resistor and a first electrically controlled switch, the second circuit is provided with a second resistor and a second electrically controlled switch, the first circuit and the second circuit are provided in parallel and a common end is provided with a PE port, the third circuit is provided with a diode and a CPin port, the single-chip microcomputer is connected to a fourth circuit, and the third circuit is provided with a driver, a third resistor and a CPout port; The single chip microcomputer is connected with a communication module and a power supply unit; It also includes a CP voltage measuring unit, which is respectively connected to the single chip microcomputer and one end of the third resistor close to the CPout port.

2. A charging pile orderly charging module according to claim 1, characterized in that: The resistance values ​​of the first resistor, the second resistor and the third resistor are 1.3k, 2.74k and 1k respectively.

3. A charging pile orderly charging management method, implemented based on a charging pile orderly charging module according to any one of claims 1-2, characterized in that: The steps include: The single-chip microcomputer detects the state of the electric vehicle on the CPout line, and forwards the state of the electric vehicle to CPin by controlling the first electric control switch and the second electric control switch. After CPin outputs PWM, the single-chip microcomputer measures the duty cycle of the pulse after processing through the limit processing circuit, and uses this as the maximum duty cycle that can be output on the CPout line; After the microcontroller receives the power adjustment instruction from the remote management background through the communication module, it can adjust the charging power of the electric vehicle or stop charging by changing the duty cycle of the CP pulse on the CPout line.

4. A charging pile orderly charging management method according to claim 3, characterized in that: The states of the electric vehicle end include gun plugged in, gun pulled out, and S2 switch closed.

5. A charging pile orderly charging management method according to claim 4, characterized in that: The specific process of forwarding the state of the electric vehicle to CPin by controlling the first electric control switch and the second electric control switch is: When CPout is detected to be 9 Vpeak, the second electronically controlled switch is closed; when CPout is detected to be 6 Vpeak, the first electronically controlled switch and the second electronically controlled switch are closed; when CPout is detected to be 12 Vpeak, the first electronically controlled switch and the second electronically controlled switch are opened.

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