A charging and discharging gun head device with a metering module

Abstract

The utility model belongs to automobile charge -discharge technology field provides a kind of charge-discharge gun head equipment with metering module, gun head body is arranged with metering module, metering module is used to calculate the electric quantity of two-way flow between charging pile and electric vehicle load;Metering module at least includes: acquisition circuit, it is configured as the electric parameter signal of acquisition flowing through cable;Calculation circuit, it is configured as the corresponding electric parameter value of the electric parameter signal to obtain;Communication circuit, it is configured as the position data of electric parameter value, gun head body is sent to the terminal with the data connection established with gun head body in wireless mode, and make terminal determine the positioning information of charge-discharge gun head equipment.The utility model is characterized in that the metering module is integrated on the gun head body, and then the communication circuit is set in the metering module to transmit the real-time detected electric parameter value to the terminal, to obtain accurate car charging or discharging electric quantity, realize the two-way metering of electric quantity.

Description

Technical Field

[0001] This utility model relates to the field of automotive charging and discharging technology, and in particular to a charging and discharging gun head device with a metering module. Background Technology

[0002] Electric vehicle charging stations are the most basic electrical infrastructure for charging electric vehicles. According to national metrological verification regulations, the entire charging station needs to be maintained regularly. Once the station is opened, its metrological performance must be re-verified. However, testing the entire charging station typically requires the installation of a lead seal, which cannot be opened, yet the station itself needs regular maintenance. Therefore, there is a certain contradiction between these two requirements.

[0003] Installing the electricity metering device inside the charging gun would facilitate both calibration and regular maintenance of the charging pile. Furthermore, moving the metering point forward would more accurately reflect the actual charging energy, avoiding the inclusion of cable and pile-related losses in the calculations and protecting consumer rights. However, currently, the metering device and charging gun are located along a long cable, and cable losses result in a large amount of energy consumption being measured, affecting the final metering result. Utility Model Content

[0004] The purpose of this invention is to provide a charging and discharging gun head device with a metering module to solve the problem of inaccurate electrical energy metering in existing charging and discharging guns.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A charging / discharging gun head device with a metering module includes a gun head body. A cable runs through the gun head body, one end of which is connected to a charging pile, and the other end is electrically connected to an electric vehicle load via gun head terminals. A base is disposed within the gun head body, and a metering module is arranged on the base. The metering module is used to calculate the bidirectional flow of electricity between the charging pile and the electric vehicle load. The metering module includes at least:

[0007] The acquisition circuit is configured to acquire electrical parameter signals flowing through the cable;

[0008] A computing circuit is configured to calculate the corresponding electrical parameter value based on the acquired electrical parameter signal;

[0009] The communication circuit is configured to wirelessly transmit electrical parameter values ​​and the position data of the gun head body to a terminal that has established a data connection with the gun head body, and enable the terminal to determine the positioning information of the charging and discharging gun head device.

[0010] Furthermore, the acquisition circuit includes a first sensor with a through-hole. A cable passes through the through-hole so that when current flows through the through-hole, the first sensor receives the corresponding electrical parameter signal.

[0011] Furthermore, a first circuit board is provided on the base, and the plane on which the first circuit board is located is parallel to the direction of the current flowing through the cable detection section. The calculation circuit is arranged on the first circuit board.

[0012] Furthermore, a second circuit board is provided on the gun head body, and the plane on which the second circuit board is located forms a preset angle with the plane on which the first circuit board is located.

[0013] Furthermore, the second circuit board is disposed on the base, and its plane is perpendicular to the plane of the first circuit board. The second circuit board is provided with communication circuitry.

[0014] Furthermore, a third circuit board is provided on the gun head body, and a power supply circuit is provided on the third circuit board. The power supply circuit supplies power to the metering module by converting the current flowing through the cable.

[0015] Furthermore, a handle is provided on the gun head body, and a second circuit board is provided in the receiving cavity inside the handle. A communication circuit is provided on the second circuit board.

[0016] Furthermore, a power supply circuit is located on the first circuit board, which supplies power to the metering module by converting the current flowing through the cable.

[0017] Furthermore, a voltage detection circuit is provided on the first circuit board, which samples the voltage value of the cable by setting a voltage divider resistor.

[0018] Furthermore, a voltage detection circuit is provided on the first circuit board, which samples the voltage value of the cable by setting a voltage transformer.

[0019] Furthermore, a temperature sensor is installed next to the cable detection section, with one end of the temperature sensor electrically connected to the first circuit board to obtain the real-time temperature value of the cable.

[0020] Compared with the prior art, this utility model has at least the following beneficial effects:

[0021] (1) The metering module is integrated into the charging and discharging gun head body, and then a communication circuit is set in the metering module to transmit the real-time detected electrical parameter values ​​to the terminal, so as to obtain the accurate charging or discharging power of the car.

[0022] (2) The cable passes through the receiving hole of the first sensor so that when the current flows through the receiving hole, the first sensor can receive the corresponding electrical parameter signal and send it to the calculation circuit, thereby accurately measuring the electrical energy flowing to or from the vehicle load.

[0023] (3) The control circuit can perform self-diagnosis based on the electrical parameter values ​​calculated by the calculation circuit. When an abnormal situation occurs, it can promptly send the fault type and corresponding gun head position data to the terminal through the communication circuit. Then the terminal can determine which gun head body is abnormal based on the real-time transmitted data, thereby accurately locating the charging and discharging gun head equipment that may have a fault. At the same time, the terminal can provide maintenance or inspection personnel with the optimal path planning to reach the corresponding gun head equipment based on the gun head position information.

[0024] (4) A temperature sensor is installed on the side of the cable detection section to obtain the real-time temperature value of the cable, thereby preventing the cable from overheating during the charging process.

[0025] (5) The communication circuit is placed away from the base and inside the receiving cavity of the handle to better realize the transmission of communication signals and the isolation and shielding between circuit signals. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the charging / discharging gun head body in Embodiment 1 of this utility model;

[0028] Figure 2 This is an exploded view of the charging / discharging gun head body in Embodiment 1 of this utility model;

[0029] Figure 3 This is a schematic diagram of the metering module in Embodiment 1 of this utility model;

[0030] Figure 4 This is a schematic diagram of the electrical framework of the metering module in Embodiment 1 of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the charging / discharging gun head body in Embodiment 2 of this utility model;

[0032] Figure 6This is an exploded view of the charging / discharging gun head body in Embodiment 2 of this utility model.

[0033] In the diagram, 100 is the gun head body, 110 is the upper cover, 120 is the lower cover, 130 is the cable, 131 is the cable detection section, 140 is the gun head terminal, 150 is the base, 151 is the first circuit board, 152 is the second circuit board, 153 is the third circuit board, 160 is the metering module, 161 is the first sensor, 170 is the temperature sensor, 180 is the handle, and 200 is the housing. Detailed Implementation

[0034] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] Example 1

[0036] like Figures 1 to 4 As shown, the charging and discharging gun head device with metering module provided in this embodiment is applicable to AC charging and discharging guns. It includes a gun head body 100, which includes an upper cover 110 and a lower cover 120 that can be spliced ​​together. A cable 130 passes through the gun head body 100. One end of the cable 130 is connected to the charging pile, and the other end is electrically connected to the electric vehicle load through the gun head terminal 140.

[0037] The charging head body 100 is provided with a base 150, and a metering module 160 is arranged on the base 150. The metering module 160 is used to calculate the bidirectional flow of electricity between the charging pile and the electric vehicle load.

[0038] The metering module 160 includes:

[0039] The acquisition circuit is configured to acquire electrical parameter signals flowing through the cable;

[0040] A computing circuit is configured to calculate the corresponding electrical parameter value based on the acquired electrical parameter signal;

[0041] The control circuit is configured to output a corresponding control signal based on the instruction signal from the terminal or the electrical parameter value calculated by the calculation circuit, so as to send the electrical parameter value and the position information of the gun head body to the terminal at regular intervals.

[0042] The communication circuit is configured to wirelessly transmit electrical parameter values ​​and the position data of the gun head body to a terminal that has established a data connection with the gun head body, and enable the terminal to determine the positioning information of the charging and discharging gun head device.

[0043] Preferably, the electrical parameter values ​​calculated in the computing circuit include, but are not limited to, the electrical energy flowing to or from the vehicle load, the real-time current value, the real-time voltage value, and other electrical parameters.

[0044] Preferably, the various circuits in the metering module are laid out on the same circuit board or arranged on multiple different circuit boards, and the circuit boards are fixed to the base 150 by bolts or plug-in structures.

[0045] This embodiment first integrates the metering module onto the charging gun body. Then, a communication circuit is set in the metering module to transmit the real-time detected electrical parameter values ​​to the terminal, thereby obtaining accurate charging or discharging capacity of the vehicle. Furthermore, when the metering module malfunctions, it can promptly send the fault type and corresponding charging gun location data to the terminal via the communication circuit. The terminal can then determine which charging gun body is malfunctioning based on the real-time transmitted data, thus accurately locating the potentially faulty charging / discharging gun. Simultaneously, the terminal can provide maintenance or inspection personnel with the optimal route planning to the corresponding charging / discharging gun based on the gun's location information.

[0046] Preferably, a first circuit board 151, a second circuit board 152 and a third circuit board 153 are provided on the base 150. The plane on which the first circuit board is located is parallel to the direction of the current flowing through the cable detection section 131, and the calculation circuit is arranged on the first circuit board 151.

[0047] The plane of the second circuit board 152 is perpendicular to the plane of the first circuit board 151, and a communication circuit is provided on the second circuit board 152.

[0048] The power supply circuit is located on the third circuit board 153. The power supply circuit converts the current flowing through the cable 130 to supply power to the various circuits in the metering module 160.

[0049] The first circuit board 151 is connected to the bottom of the base 150 by bolts. The second circuit board 152 and the third circuit board 153 are respectively set perpendicular to the first circuit board, and the two circuit boards are parallel to each other and inserted into the base 150 to form a π-shaped structure.

[0050] Each of the corresponding circuits in the metering module 160 is arranged on the three circuit boards. When maintaining or replacing the circuit boards, each circuit can be replaced individually without disassembling the entire module, thus improving the convenience of replacement.

[0051] Furthermore, the base 150 is provided with a receiving groove for placing the first sensor 161 in the acquisition circuit. The first sensor 161 has a through receiving hole, and one end of it is connected to the computing circuit in the first circuit board 151. At the same time, the cable 130 is arranged to pass through the receiving hole, so that when current flows through the receiving hole, the first sensor 161 can receive the corresponding electrical parameter signal and send it to the computing circuit, thereby accurately measuring the electrical parameter value flowing through the cable.

[0052] At the same time, using the electrical parameter signal obtained by the first sensor 161, the calculation circuit can also calculate the voltage value of the cable 130, and then transmit it to the terminal for display in real time.

[0053] Preferably, the first sensor 161 is positioned close to the end of the gun head body 100 that is electrically connected to the charging / discharging port of the electric vehicle. This arrangement allows for more accurate current measurement, thereby improving the precision of power metering.

[0054] In addition, to achieve more accurate voltage value acquisition of the cable, this embodiment proposes other voltage detection methods in addition to using the first sensor to obtain the voltage value. Specifically, a voltage detection circuit is provided on the first circuit board 151. The voltage detection circuit includes, but is not limited to, sampling the voltage value between the L line and the N line by setting a voltage divider resistor, using a voltage transformer, or using a voltage sensor based on the fluxgate principle or the Hall principle. Then, the corresponding value is transmitted to the terminal for data display or fault diagnosis through a communication circuit.

[0055] Meanwhile, to prevent the cable from overheating during charging, a temperature sensor 170 is provided next to the cable detection section 131 in this embodiment. One end of the temperature sensor 170 is electrically connected to the first circuit board 151 to obtain the real-time temperature value of the cable. The real-time temperature signal obtained by the temperature sensor is transmitted to the calculation circuit, where it is converted into a corresponding temperature value. This temperature value is then transmitted to the terminal via the communication circuit, and the calculation circuit determines whether the temperature value exceeds a threshold, which serves as the basis for the control circuit to output whether to continue the charging operation.

[0056] Example 2

[0057] like Figures 4 to 6 As shown, it includes a gun head body 100 and an integrally formed housing 200. A cable 130 passes through the housing 200. One end of the cable 130 is connected to the charging pile, and the other end is electrically connected to the electric vehicle load through the gun head terminal 140.

[0058] A base 150 is provided inside the housing 200, and a metering module 160 is arranged on the base 150. The metering module 160 is used to calculate the bidirectional flow of electricity between the charging pile and the electric vehicle load.

[0059] The metering module 160 includes:

[0060] The acquisition circuit is configured to acquire electrical parameter signals flowing through the cable;

[0061] A computing circuit is configured to calculate the corresponding electrical parameter value based on the acquired electrical parameter signal;

[0062] The control circuit is configured to output a corresponding control signal based on the command signal from the terminal or the electrical parameter value calculated by the calculation circuit, so as to send the electrical parameter value and the position information of the gun head body to the terminal at regular intervals.

[0063] The communication circuit is configured to wirelessly transmit electrical parameter values ​​and the position data of the gun head body to a terminal that has established a data connection with the gun head body, and enable the terminal to determine the positioning information of the charging and discharging gun head device.

[0064] Preferably, the electrical parameter values ​​calculated in the computing circuit include, but are not limited to, the electrical energy flowing to or from the vehicle load, the real-time current value, the real-time voltage value, and other electrical parameters.

[0065] Preferably, the various circuits in the metering module are laid out on the same circuit board or arranged on multiple different circuit boards, and the circuit boards are fixed to the base 150 by bolts or plug-in structures.

[0066] This embodiment first integrates the metering module onto the charging gun body. Then, a communication circuit is set in the metering module to transmit the real-time detected electrical parameter values ​​to the terminal, thereby obtaining accurate charging or discharging capacity of the vehicle. Furthermore, when the metering module malfunctions, it can promptly send the fault type and corresponding charging gun location data to the terminal via the communication circuit. The terminal can then determine which charging gun body is malfunctioning based on the real-time transmitted data, thus accurately locating the potentially faulty charging / discharging gun. Simultaneously, the terminal can provide maintenance or inspection personnel with the optimal route planning to the corresponding charging / discharging gun based on the gun's location information.

[0067] Compared with Embodiment 1, the main difference is that the charging / discharging gun head device with metering module proposed in this embodiment is applicable to DC charging / discharging guns. On this charging / discharging gun, a handle 180 is provided on the housing 200 of the charging / discharging gun head, and the user inserts the charging / discharging gun head into the charging / discharging port by holding the handle 180.

[0068] The housing 200 contains only two circuit boards. The first circuit board 151 is bolted to the base 150, while the second circuit board is located in a receiving cavity within the handle 180.

[0069] Meanwhile, the first circuit board 151 is equipped with the calculation circuit, power supply circuit and voltage detection circuit of the metering module, while the second circuit board is equipped with the communication circuit.

[0070] On the one hand, due to the limited space inside the DC charging and discharging gun, it cannot accommodate more circuit board layouts; on the other hand, in order to better realize the transmission of communication signals and the isolation and shielding between circuit signals, the communication circuit and its corresponding antenna are placed away from the base and inside the receiving cavity of the handle.

[0071] In addition, to achieve more accurate voltage value acquisition of the cable, this embodiment proposes other voltage detection methods in addition to using the first sensor to obtain the voltage value. Specifically, a voltage detection circuit is provided on the first circuit board 151. The voltage detection circuit includes, but is not limited to, sampling the voltage value between the positive and negative poles of the cable input or output by setting a voltage divider resistor, using a voltage transformer, or using a voltage sensor based on the fluxgate principle or Hall effect principle. Then, the corresponding value is transmitted to the terminal for data display or fault diagnosis through a communication circuit.

[0072] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0073] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0074] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A charging / discharging gun head device with a metering module, comprising a gun head body, wherein a cable passes through the gun head body, one end of the cable is connected to a charging pile, and the other end is electrically connected to an electric vehicle load through a gun head terminal; characterized in that, A base is provided within the charging head body, and a metering module is arranged on the base. The metering module is used to calculate the bidirectional flow of electricity between the charging pile and the electric vehicle load. The metering module includes at least: A data acquisition circuit is configured to acquire electrical parameter signals flowing through the cable; A computing circuit configured to calculate corresponding electrical parameter values ​​based on the acquired electrical parameter signals; A communication circuit is configured to wirelessly transmit the electrical parameter values ​​and the position data of the gun head body to a terminal that has established a data connection with the gun head body, and enable the terminal to determine the positioning information of the charging and discharging gun head device. A first circuit board is provided on the base, and the plane of the first circuit board is parallel to the current direction of the detection section flowing through the cable. The calculation circuit is arranged on the first circuit board. A second circuit board is provided on the gun head body, and the communication circuit is arranged on the second circuit board. The plane of the second circuit board is at a preset angle to the plane of the first circuit board.

2. The charging / discharging gun head device with a metering module according to claim 1, characterized in that, The acquisition circuit includes a first sensor with a through-hole. The cable passes through the through-hole so that when current flows through the through-hole, the first sensor receives the corresponding electrical parameter signal.

3. The charging / discharging gun head device with a metering module according to claim 1, characterized in that, The second circuit board is disposed on the base, and its plane is perpendicular to the plane of the first circuit board.

4. A charging / discharging gun head device with a metering module according to claim 1, characterized in that, A third circuit board is provided on the gun head body, and a power supply circuit is provided on the third circuit board. The power supply circuit supplies power to the metering module by converting the current flowing through the cable.

5. A charging / discharging gun head device with a metering module according to claim 1, characterized in that, The gun head body is provided with a handle, and the second circuit board is disposed in the receiving cavity inside the handle.

6. A charging / discharging gun head device with a metering module according to claim 5, characterized in that, A power supply circuit is disposed on the first circuit board, and the power supply circuit supplies power to the metering module by converting the current flowing through the cable.

7. A charging / discharging gun head device with a metering module according to claim 1, characterized in that, The first circuit board is provided with a voltage detection circuit, which samples the voltage value of the cable by setting a voltage divider resistor.

8. A charging / discharging gun head device with a metering module according to claim 1, characterized in that, The first circuit board is provided with a voltage detection circuit, which samples the voltage value of the cable by setting a voltage transformer.

9. A charging / discharging gun head device with a metering module according to claim 1, characterized in that, A temperature sensor is installed next to the cable detection section, and one end of the temperature sensor is electrically connected to the first circuit board to obtain the real-time temperature value of the cable.

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