Charging pile with double metering modes

Abstract

The utility model provides a charging pile with double metering modes, which comprises a charging pile output power supply and a charging pile chip, the charging pile output power supply is electrically connected with an electricity meter metering module and an onboard metering module, and the electricity meter metering module and the onboard metering module are arranged in parallel; the output end of the electricity meter metering module and the output end of the onboard metering module are electrically connected with the input end of the charging pile chip. According to the utility model, the two metering modules are arranged on the output power supply of the charging pile and are respectively the ammeter metering module and the onboard metering module, and in the charging process, the ammeter metering module and the onboard metering module can detect and record consumed electric energy, so that the effect of double-metering charging is realized, and when one metering module is damaged, the metering module can be used for metering the consumed electric energy. When one metering module is damaged suddenly, the other metering module can still work normally, so that the problem that the charging pile cannot be used for charging normally when the metering module is damaged suddenly can be effectively avoided, and the problem that the charging pile is always in a paralyzed state before maintenance can also be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging piles, and particularly relates to a charging pile with a dual metering mode. Background Art

[0002] A charging pile is an energy supplement device that provides power for electric vehicles. Its function is similar to a fuel dispenser in a gas station. It can be fixed on the ground or wall and installed in public buildings and parking lots in residential communities. It can charge various models of electric vehicles by adjusting voltage and current. There is only a single metering module inside the existing charging pile, which is used to record the electric energy used by users and calculate the cost at the same time. When the metering module suddenly breaks down, the charging pile cannot be used for billing normally. And before the repair, the charging pile will always be in a paralyzed state, which may bring certain troubles to users. Content of the Utility Model

[0003] In order to solve the above existing technical problems, the utility model provides a charging pile with a dual metering mode, which can achieve the effect of dual metering charging, effectively avoid the problem that the charging pile cannot be used for billing normally when the metering module suddenly breaks down, and also avoid the problem that the charging pile is always in a paralyzed state before the repair.

[0004] Its technical solution is as follows: A charging pile with a dual metering mode includes a charging pile output power supply and a charging pile chip. The charging pile output power supply is electrically connected to an electricity meter metering module and a board-mounted metering module in parallel, and the electricity meter metering module and the board-mounted metering module are arranged in parallel; the output ends of the electricity meter metering module and the board-mounted metering module are both electrically connected to the input end of the charging pile chip; through the electricity meter metering module and the board-mounted metering module, the consumed electric energy can be detected and recorded simultaneously, and the recorded information can be transmitted to the charging pile chip, so that the charging pile chip calculates the cost.

[0005] Compared with the prior art, the beneficial effect of the utility model is as follows:

[0006] The utility model sets two metering modules on the charging pile output power supply, namely an electricity meter metering module and a board-mounted metering module. During the charging process, both the electricity meter metering module and the board-mounted metering module can detect and record the consumed electric energy, achieving the effect of dual metering charging. Thus, when one metering module breaks down, the other metering module can still work normally, effectively avoiding the problem that the charging pile cannot be used for billing normally when the metering module suddenly breaks down, and also avoiding the problem that the charging pile is always in a paralyzed state before the repair. Description of the Drawings

[0007] Figure 1 It is a structural schematic diagram of the utility model.

[0008] Figure 2 It is a structural schematic diagram of the electric meter measuring module of the utility model.

[0009] Figure 3 It is a structural schematic diagram of the onboard metering module of the utility model.

[0010] In the figure:

[0011] 1. Charging pile output power supply; 2. Electric meter measurement module; 21. Smart electric meter; 22. Current transformer; 3. Onboard measurement module; 31. Measurement chip; 32. First resistor; 33. Second resistor; 34. Third resistor; 35. Fourth resistor; 4. Charging pile chip. DETAILED DESCRIPTION

[0012] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 As shown, the charging pile in dual metering mode includes a charging pile output power supply 1 and a charging pile chip 4. The charging pile output power supply 1 is electrically connected to an ammeter metering module 2 and an onboard metering module 3, and the ammeter metering module 2 and the onboard metering module 3 are arranged in parallel; the output end of the ammeter metering module 2 and the output end of the onboard metering module 3 are both electrically connected to the input end of the charging pile chip 4; the ammeter metering module 2 and the onboard metering module 3 can simultaneously detect and record the consumed electric energy, and can transmit the recorded information to the charging pile chip 4, so that the charging pile chip 4 calculates the cost; the charging pile chip 4 adopts an MCU chip.

[0013] In this embodiment, combined with the Figure 2 As shown, the metering module 2 includes a smart meter 21, and the voltage detection port of the smart meter 21 is electrically connected to the L phase and the N phase of the charging pile output power supply 1 respectively; the current detection port of the smart meter 21 is electrically connected to the current transformer 22, and the current transformer 22 is sleeved on the L phase of the charging pile output power supply 1; the RS485 interface of the smart meter 21 is connected to the input end of the charging pile chip 4 through a data line; the smart meter 21 adopts a single-phase smart meter;

[0014] Since the voltage detection port of the smart meter 21 is respectively connected to the L phase and N phase of the charging pile output power supply 1, and the L phase of the charging pile output power supply 1 is connected with a current transformer 22, the smart meter 21 can detect the voltage and current of the charging pile output power supply 1, and the smart meter 21 can calculate the active power, reactive power, power consumption and non-power consumption through the voltage and current. Then the smart meter 21 will transmit the metering information to the charging pile chip 4 in real time through the RS485 data line, and the charging pile chip 4 will calculate the cost in real time, and transmit the cost information to the display screen of the charging pile for real-time display.

[0015] In this implementation, in combination with the attached Figure 3 As shown, the on-board metering module 3 includes a metering chip 31. The V1P terminal and V1N terminal of the metering chip 31 are respectively electrically connected to the L phase of the charging pile output power supply 1. A first resistor 32 is also electrically connected to the L phase of the charging pile output power supply 1. The two ends of the first resistor 32 are respectively electrically connected to the V1P terminal and V1N terminal of the metering chip 31. During charging, the differential voltages at both ends of the first resistor 32 are respectively connected to the V1P terminal and V1N terminal of the metering chip 31, so that the metering chip 31 can calculate the charging current. The V3P terminal of the metering chip 31 is electrically connected to the N phase of the charging pile output power supply 1 through a second resistor 33. One end of a third resistor 34 is electrically connected between the V3P terminal of the metering chip 31 and the second resistor 33. The other end of the third resistor 34 is electrically connected to the GND terminal of the metering chip 31. One end of a fourth resistor 35 is electrically connected to the V3N terminal of the metering chip 31, and the other end of the fourth resistor 35 is electrically connected to the GND terminal of the metering chip 31. The GND terminal of the metering chip 31 is also electrically connected to the L phase of the charging pile output power supply 1. The second resistor 33, the third resistor 34, and the fourth resistor 35 form a resistor voltage division circuit, so that the metering chip 31 can identify the voltage between the L phase and N phase of the charging pile output power supply 1. The metering chip 31 can calculate the corresponding active power, reactive power, active energy consumption, and reactive energy consumption through the charging current and the voltage between the L phase and N phase of the charging pile output power supply 1. The output terminal of the metering chip 31 is connected to the input terminal of the charging pile chip 4 through an SPI data line. The VCC terminal of the metering chip 31 is electrically connected to an external power supply.

[0016] The metering chip 31 takes the L phase as the reference zero potential, and the N phase is connected to the V3P terminal of the metering chip 31 by means of resistor voltage division, so that the metering chip 31 can identify the voltage between the L phase and N phase of the charging pile output power supply 1. There is a milliohm resistor on the L phase of the charging pile output power supply 1. When the charging pile charges the electric vehicle, the differential voltages at both ends of the milliohm resistor are respectively connected to the V1P terminal and V1N terminal of the metering chip 31, so that the metering chip 31 calculates the charging current. At this time, the metering chip 31 can calculate the corresponding active power, reactive power, active energy consumption, and reactive energy consumption according to the current and voltage. Then the metering chip 31 will transmit the metering information to the charging pile chip 4 in real time through the SPI data line, and the charging pile chip 4 will calculate the cost in real time and transmit the cost information to the display screen of the charging pile for real-time display.

[0017] Under normal working conditions, the metering chip 31 is in the off state, while the charging pile chip 4 will take the metering data transmitted in real time by the electric meter metering module 2 as the standard. When the charging pile chip 4 cannot receive the metering data of the electric meter metering module 2, that is, when the electric meter metering module 2 is damaged, the charging pile chip 4 will automatically send a start instruction to the metering chip 31, causing the metering chip 31 to send metering data to the charging pile chip 4 in real time, and the charging pile chip 4 will send an alarm message to the management personnel through the remote communication system in the charging pile.

[0018] Using the technical solution of the present utility model, or those skilled in the art being inspired by the technical solution of the present utility model to design a similar technical solution and achieving the above technical effects shall fall within the protection scope of the present utility model.

Claims

1. The charging pile with a dual metering mode, the charging pile with the dual metering mode includes a charging pile output power supply (1) and a charging pile chip (4), and is characterized in that, The charging pile output power supply (1) is electrically connected to an electricity meter metering module (2) and an on-board metering module (3) when powered on, and the electricity meter metering module (2) and the on-board metering module (3) are arranged in parallel; the output ends of the electricity meter metering module (2) and the on-board metering module (3) are both electrically connected to the input end of the charging pile chip (4); through the electricity meter metering module (2) and the on-board metering module (3), the consumed electric energy can be detected and recorded simultaneously, and the recorded information can be transmitted to the charging pile chip (4) so that the charging pile chip (4) calculates the cost.

2. The charging pile with a dual metering mode according to claim 1, characterized in that, The described electricity meter metering module (2) includes a smart electricity meter (21). The voltage detection ports of the smart electricity meter (21) are respectively electrically connected to the L phase and the N phase of the charging pile output power supply (1); an electric current transformer (22) is electrically connected to the current detection port of the smart electricity meter (21) when powered on, and the electric current transformer (22) is sleeved on the L phase of the charging pile output power supply (1).

3. The charging pile with a dual metering mode according to claim 2, characterized in that, The RS485 interface of the described smart electricity meter (21) is connected to the input end of the charging pile chip (4) through a data line.

4. The charging pile with a dual metering mode as claimed in claim 3, wherein, The described on-board metering module (3) includes a metering chip (31). The V1P end and the V1N end of the metering chip (31) are respectively electrically connected to the L phase of the charging pile output power supply (1), and a first resistor (32) is also electrically connected to the L phase of the charging pile output power supply (1). The two ends of the first resistor (32) are also respectively electrically connected to the V1P end and the V1N end of the metering chip (31). During charging, the differential voltages at both ends of the first resistor (32) are respectively connected to the V1P end and the V1N end of the metering chip (31), so that the metering chip (31) can calculate the charging current. The V3P end of the metering chip (31) is electrically connected to the N phase of the charging pile output power supply (1) through a second resistor (33). One end of a third resistor (34) is electrically connected between the V3P end of the metering chip (31) and the second resistor (33), and the other end of the third resistor (34) is electrically connected to the GND end of the metering chip (31); one end of a fourth resistor (35) is electrically connected to the V3N end of the metering chip (31), and the other end of the fourth resistor (35) is electrically connected to the GND end of the metering chip (31); the GND end of the metering chip (31) is also electrically connected to the L phase of the charging pile output power supply (1); the second resistor (33), the third resistor (34) and the fourth resistor (35) form a resistor voltage division circuit, so that the metering chip (31) can identify the voltage between the L phase and the N phase of the charging pile output power supply (1). The metering chip (31) can calculate the corresponding active power, reactive power, active energy consumption and reactive energy consumption through the charging current and the voltage between the L phase and the N phase of the charging pile output power supply (1).

5. The charging pile with a dual metering mode according to claim 4, wherein, The output end of the described metering chip (31) is connected to the input end of the charging pile chip (4) through an SPI data line.

6. The charging pile with a dual metering mode according to claim 5, wherein The described smart electricity meter (21) uses a single-phase smart electricity meter.

Images