Billing charging unit and three-phase alternating current charging pile

Abstract

The utility model discloses a billing charging unit and a three-phase AC charging pile, and relates to the technical field of intelligent charging, and the billing charging unit comprises a first interface, a second interface, a fourth interface and a fifth interface, the first interface is respectively connected with the card reader, the watt-hour meter and the alternating current pile controller, the fourth interface inputs digital signals, and the fifth interface outputs digital signals. The beneficial effects of the utility model are that through the connection with the card reader and the watt-hour meter, the billing charging unit realizes the monitoring and management of the charging process. Through connection with the AC pile controller, the billing charging unit can realize remote monitoring and control of the charging pile, including functions of starting, stopping, charging power adjustment and the like, and manageability and operability of charging equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent charging, in particular to a charging unit and a three-phase AC charging pile. Background Art

[0002] At present, on the one hand, the problems of users having difficulty charging, finding charging piles, and long queues are becoming increasingly prominent. On the other hand, charging piles have problems such as low utilization, long-term idleness, and high operating costs. In addition, the large-scale use of charging facilities has a certain impact on the load safety of power grid operation, especially the disorderly charging load of electric vehicles will bring a series of problems to the distribution network, such as voltage drop, line overload, power grid load peak, network loss, etc. Therefore, it is increasingly necessary to study orderly charging strategies to solve the charging difficulties, improve the efficiency of charging piles and reduce the impact of charging on power grid load.

[0003] The orderly charging strategy of electric vehicles is to guide and control the charging of electric vehicles by using practical and effective economic or technical measures on the premise of meeting the charging demand of electric vehicles, to reduce the peak and fill the valley of the load curve of the power grid, to make the load curve variance smaller, to reduce the construction of power generation installed capacity, and to ensure the coordinated and interactive development of electric vehicles and power grids. The quantitative evaluation of the impact of large-scale electric vehicles on the power grid after access to the power grid and the research on charging control strategies aimed at reducing negative impacts have become increasingly hot issues of concern, and the concept of orderly charging has emerged.

[0004] Therefore, it is necessary to design and develop a component-based charging control unit (TCU) with functions such as data collection, storage, communication, power control, and strategy execution, so as to achieve response rate, collection frequency and other performance to meet the needs of orderly charging control. Utility Model Content

[0005] Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0006] In view of the above problems or problems existing in the prior art, the present utility model is proposed.

[0007] Therefore, the purpose of the present invention is to provide a billing charging unit and a three-phase AC charging pile, which are intended to solve the existing problems.

[0008] To solve the above technical problems, the utility model provides the following technical solutions: a billing charging unit, comprising a billing charging unit, comprising a first interface and a second interface with the same pins, as well as a fourth interface and a fifth interface; the first interface is respectively connected to a card reader, an electric meter and an AC pile controller, the fourth interface inputs a digital signal, and the fifth interface outputs a digital signal.

[0009] As a preferred solution of the billing charging unit of the utility model, wherein: the B1 / A1 pin of the first interface is connected to the electricity meter, the L1 / H1 pin of the first interface is connected to the AC pile controller, the +5V / GND pin of the first interface is respectively connected to the +5V / GND pin of the card reader and the audio module, and the RXD1 / TXD1 pin of the first interface is respectively connected to the R / T pin of the card reader.

[0010] As a preferred solution of the billing and charging unit of the utility model, wherein: the fourth interface inputs two sets of digital signals through the DI1+ / DI2+ pins and is grounded through the DI1- / DI2- pins; the fifth interface outputs two sets of digital signals through the DO1+ / DO2+ pins and is grounded through the DO1- / DO2- pins.

[0011] As a preferred solution of the billing charging unit of the utility model, the billing charging unit also includes a third interface, and the third interface is connected to the +12V pin of the auxiliary charging module and the GND pin of the tenth interface through the +12V / GND pin.

[0012] As a preferred solution of the billing and charging unit described in the utility model, the billing and charging unit also includes a first SIM card slot, a second SIM card slot, an SD card slot, a USB interface, an eight-port LAN interface, a dual-mode antenna and a liquid crystal display.

[0013] To solve the above technical problems, the utility model provides the following technical solutions: a three-phase AC charging pile, comprising the above-mentioned billing charging unit, and also comprising an AC pile controller, and a three-phase AC charging gun and an AC charging gun holder connected to the AC pile controller; the sixth interface on the AC pile controller is connected to the L1 / H1 pin of the first interface through the CANH / CANL pin; the three-phase AC charging gun establishes a communication connection through an electric meter arranged on the three-phase line.

[0014] As a preferred solution of the three-phase AC charging pile described in the utility model, an AC contactor is also provided on the A / B / C three-phase line of the three-phase AC charging gun, and a resistor and a capacitor are connected in parallel at both ends of the AC contactor, and the two ends are respectively connected to the L1 / N1 pins on the seventh interface on the AC pile controller.

[0015] As a preferred solution of the three-phase AC charging pile of the utility model, wherein: the A / B / C three-phase lines and the neutral line of the three-phase AC charging gun are provided with a leakage main circuit breaker, and the three-phase AC charging gun is connected to the lightning arrester through a lightning protection circuit breaker.

[0016] As a preferred solution of the three-phase AC charging pile described in the utility model, one of the A / B / C three-phase lines and the neutral line of the three-phase AC charging gun are respectively connected to the Lin / Nin pin of the eighth interface on the AC pile controller through an auxiliary circuit breaker, and are connected to the AC / L and AC / N pins of the auxiliary charging module.

[0017] As a preferred solution of the three-phase AC charging pile described in the utility model, wherein: the thirteenth interface on the AC pile controller is connected to the gun seat of the AC charging gun seat through pins 3 and 4; the auxiliary charging module is also connected to the tenth interface on the AC pile controller through the +12V / -12V / +5V pins; the two gun seat indicator lights of the AC charging gun seat are powered by the tenth interface and the auxiliary charging module respectively.

[0018] The beneficial effects of the utility model are as follows: through the connection with the card reader and the electricity meter, the billing charging unit realizes the monitoring and management of the charging process, including functions such as user identity authentication, electricity metering and fee billing, thereby ensuring the safety and compliance of the charging process. Through the connection with the AC pile controller, the billing charging unit can realize remote monitoring and control of the charging pile, including functions such as starting, stopping, and adjusting the charging power, thereby improving the manageability and operability of the charging equipment. Through the digital signal input and output interface, the billing charging unit can exchange and communicate data with other devices, realizing the integration of the charging equipment with external systems (such as monitoring systems, payment systems, etc.), and improving the overall efficiency and intelligence level of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 It is a schematic diagram of the charging unit described in the utility model;

[0021] Figure 2 This is the overall circuit structure diagram of the three-phase AC charging pile described in the utility model;

[0022] Figure 3 It is a schematic diagram of the AC pile controller described in the utility model;

[0023] Figure 4 This is a schematic diagram of the incoming line terminal of the three-phase AC charging pile described in the utility model;

[0024] Figure 5This is a schematic diagram of the interface of the auxiliary charging module described in the utility model. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figure 1 , which is the first embodiment of the utility model, and this embodiment provides a billing charging unit, which includes a billing charging unit TCU, including a first interface J1 and a second interface J2 with the same pins, and a fourth interface J4 and a fifth interface J5; the first interface J1 is respectively connected to the card reader FCR, the electric meter PJ and the AC pile controller AM, the fourth interface J4 inputs digital signals, and the fifth interface J5 outputs digital signals.

[0030] The B1 / A1 pin of the first interface J1 is connected to the electricity meter PJ, the L1 / H1 pin of the first interface J1 is connected to the AC pile controller AM, the +5V / GND pin of the first interface J1 is respectively connected to the +5V / GND pin of the card reader FCR and the audio module, and the RXD1 / TXD1 pin of the first interface J1 is respectively connected to the R / T pin of the card reader FCR.

[0031] The fourth interface J4 inputs two sets of digital signals through the DI1+ / DI2+ pins and is grounded through the DI1- / DI2- pins;

[0032] The fifth interface J5 outputs two sets of digital signals through the DO1+ / DO2+ pins and is grounded through the DO1- / DO2- pins.

[0033] The charging unit TCU further includes a third interface J3, which is connected to a +12V pin of the auxiliary charging module UP and a GND pin of the tenth interface J10 through +12V / GND pins.

[0034] The charging unit TCU also includes a first SIM card slot, a second SIM card slot, an SD card slot, a USB interface, an eight-port LAN interface, a dual-mode antenna and a liquid crystal display DSP.

[0035] The TCU dual-mode antenna is used to send data in two ways: 4G and Bluetooth BT.

[0036] The charging unit TCU is an important component for managing and controlling AC charging piles. It includes multiple interfaces and functional modules to achieve monitoring, billing and communication of the charging process.

[0037] Functional principle of the charging unit:

[0038] (1) Interface connection: The billing charging unit is connected to the card reader, electricity meter, AC pile controller, auxiliary charging module, etc. through multiple interfaces to realize data exchange and control functions.

[0039] (2) The first interface J1 is connected to the card reader, the watt-hour meter and the AC pile controller. The card reader is used to implement user identity authentication and billing functions, the watt-hour meter is used to implement energy measurement, and the AC pile controller is used to implement control and monitoring of the charging pile.

[0040] (3) The fourth interface J4 and the fifth interface J5 respectively input and output digital signals for data exchange and communication with other devices.

[0041] (4) The third interface J3 is connected to the auxiliary charging module and provides additional power and ground connections.

[0042] This charging unit can be "plug and play", that is, it can adapt to three-phase AC charging piles, give priority to receiving instructions from the power grid or controllable collection platform, and can also be separated from the charging pile to restore the local operation of the charging pile, so as to realize the orderly charging strategy, which is mainly considered from three aspects: the use cost of the charging station, the charging efficiency of electric vehicles and the impact on the power grid load. First, according to the difference in peak and valley electricity prices, the orderly charging time is reasonably arranged, and the charging time is allocated to the valley electricity price period as much as possible to reduce the charging cost; second, the electric vehicle queues for orderly charging designed for the shortage of charging piles, and the charging efficiency of the charging piles is provided by calculating the remaining charging time of the electric vehicle and the soc when the charging is stopped to plan the charging order of the vehicles waiting in line; third, the load of the power grid is optimized. Because the increase in the load pressure of the power grid during the peak period of electricity consumption will cause network loss and reduce the quality of electric energy, the power adjustment strategy of the charging pile is designed to dynamically adjust the power consumption of the charging station with the demand of the power grid.

[0043] In summary, through the connection with the card reader and the electricity meter, the billing charging unit realizes the monitoring and management of the charging process, including functions such as user identity authentication, electricity metering and fee billing, thereby ensuring the safety and compliance of the charging process. Through the connection with the AC pile controller, the billing charging unit can realize remote monitoring and control of the charging pile, including functions such as starting, stopping, and adjusting the charging power, which improves the manageability and operability of the charging equipment. Through the digital signal input and output interface, the billing charging unit can exchange and communicate data with other devices, realize the integration of charging equipment with external systems (such as monitoring systems, payment systems, etc.), and improve the overall efficiency and intelligence level of the system. Through the LCD display and interactive interface, users can intuitively understand the status and cost information of the charging process, improving user experience and satisfaction.

[0044] In general, the billing charging unit TCU, as the key control unit of the AC charging pile, provides users with safe, convenient and intelligent charging services by realizing functions such as charging management, remote control, data exchange and user experience, which helps promote the popularization and application of AC charging piles.

[0045] Example 2

[0046] Reference Figure 2 , 4 5 is the second embodiment of the utility model, which is different from the first embodiment in that: the embodiment provides a three-phase AC charging pile, including the billing charging unit of the above embodiment, and also includes an AC pile controller AM, and a three-phase AC charging gun XT and an AC charging gun holder XC connected to the AC pile controller AM; the sixth interface J6 on the AC pile controller AM is connected to the L1 / H1 pin of the first interface J1 through the CANH / CANL pin; the three-phase AC charging gun XT establishes a communication connection through the electric meter PJ set on the three-phase line.

[0047] An AC contactor KM is also provided on the A / B / C three-phase line of the three-phase AC charging gun XT. A resistor and a capacitor RC are connected in parallel at both ends of the AC contactor KM, and the two ends are respectively connected to the L1 / N1 pins on the seventh interface J7 on the AC pile controller AM.

[0048] A leakage main circuit breaker QF is provided on the A / B / C three-phase lines and the neutral line of the three-phase AC charging gun XT. The three-phase AC charging gun XT is connected to the lightning arrester FVC through the lightning protection circuit breaker QF1.

[0049] One of the A / B / C three-phase lines and the neutral line of the three-phase AC charging gun XT are respectively connected to the Lin / Nin pin of the eighth interface J8 on the AC pile controller AM through the auxiliary circuit breaker QF2, and are connected to the AC / L and AC / N pins of the auxiliary charging module UP.

[0050] The thirteenth interface J13 on the AC charging pile controller AM is connected to the gun holder of the AC charging gun holder XC through pins 3 and 4; the auxiliary charging module UP is also connected to the tenth interface J10 on the AC charging pile controller AM through the +12V / -12V / +5V pins; the two gun holder indicator lights of the AC charging gun holder XC are powered by the tenth interface J10 and the auxiliary charging module UP respectively.

[0051] The preferred terminal model for the three-phase AC charging pile is ZCJ33-42kW / 380V. The specific terminal arrangement U / V / W / N corresponds to the A / B / C three-phase lines and the neutral line. In addition, the three-phase AC charging pile also has a protective ground wire PE.

[0052] By adding RC in the parallel circuit of AC contactor KM, it can help reduce the current impact and spark generation at the moment of switching. The role of the resistor and capacitor in the circuit includes reducing the voltage peak during switching, extending the switching time, reducing the arc energy and reducing the generation of sparks. These measures help to reduce the arc and sparks when the contactor switches, thereby reducing contactor wear and extending its service life.

[0053] In the charging pile industry, "gun holder recovery" refers to the storage and return operation of the charging gun (the device that connects the electric vehicle and the charging pile). Usually, the charging gun needs to be stored in a safe and convenient place so that it can be easily returned to its place after the vehicle is charged.

[0054] In the design of charging piles, the gun holder is usually a bracket or fixture for storing the charging gun. "Gun holder recovery" refers to the process in which the user takes the charging gun out of the charging socket for charging and puts it back into the gun holder after charging is completed. This process usually includes the user removing the charging gun from the gun holder, connecting it to the vehicle charging port, and then reinserting the charging gun into the gun holder after charging is completed.

[0055] Example 3

[0056] Reference Figure 3 , which is the third embodiment of the present utility model. What is different from the first two embodiments is that this embodiment provides an AC pile controller AM.

[0057] The AC pile controller AM includes a ninth interface J9, and the ninth interface J9 is used for 2G module connection.

[0058] The AC pile controller AM includes two sets of emergency stop switches SA arranged on the eleventh interface J11.

[0059] The AC pile controller AM includes a twelfth interface J12, which is used as an indicator light interface and is connected to the light board HL to receive +12V power supply. The three LED lights are green, red and yellow respectively.

[0060] The thirteenth interface J13 of the AC pile controller AM is also provided with a control confirmation CP and a charging connection confirmation for connecting with the three-phase AC charging gun XT.

[0061] The AC pile controller AM includes a fourteenth interface J14, which is used to output digital signals, specifically, the DO0+ / DO1+ / DO2+ pins output three groups of digital signals and are grounded through the DO0- / DO1- / DO2- pins.

[0062] The AC pile controller AM includes an RL2 interface, and its four pins are SDI7 / K / K2 / GND, wherein a lightning arrester FVC is connected between SDI7 and GND for lightning protection.

[0063] The AC pile controller AM includes a fifteenth interface J15, wherein the leakage main circuit breaker QF is connected between its SDI1 and GND pins, the AC contactor KM is connected between its SDI2 and GND pins, and the travel switch SQ is connected between its SDI2 and GND pins.

[0064] The AC pile controller AM includes a seventeenth interface J17, which serves as a debugging interface.

[0065] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0066] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0067] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A charging unit, characterized in that: A charging and charging unit (TCU), comprising a first interface (J1) and a second interface (J2) having the same pins, and a fourth interface (J4) and a fifth interface (J5); The first interface (J1) is respectively connected to a card reader (FCR), a watt-hour meter (PJ) and an AC pile controller (AM); the fourth interface (J4) inputs a digital signal; and the fifth interface (J5) outputs a digital signal.

2. The charging unit according to claim 1, characterized in that: The B1 / A1 pin of the first interface (J1) is connected to the electric meter (PJ), the L1 / H1 pin of the first interface (J1) is connected to the AC pile controller (AM), the +5V / GND pin of the first interface (J1) is respectively connected to the +5V / GND pin of the card reader (FCR) and the audio module, and the RXD1 / TXD1 pin of the first interface (J1) is respectively connected to the R / T pin of the card reader (FCR).

3. The charging unit according to claim 2, characterized in that: The fourth interface (J4) inputs two sets of digital signals through the DI1+ / DI2+ pins and is grounded through the DI1- / DI2- pins; The fifth interface (J5) outputs two sets of digital signals through the DO1+ / DO2+ pins and is grounded through the DO1- / DO2- pins.

4. The charging unit according to claim 3, characterized in that: The charging unit (TCU) further comprises a third interface (J3), wherein the third interface (J3) is connected to a +12V pin of the auxiliary charging module (UP) and a GND pin of the tenth interface (J10) via a +12V / GND pin respectively.

5. The charging unit according to claim 4, characterized in that: The charging and billing unit (TCU) also includes a first SIM card slot, a second SIM card slot, an SD card slot, a USB interface, an eight-port LAN interface, a dual-mode antenna and a liquid crystal display.

6. A three-phase AC charging pile, characterized in that: The charging unit according to claim 4 or 5 further comprises: An AC pile controller (AM), and a three-phase AC charging gun (XT) and an AC charging gun holder (XC) connected to the AC pile controller (AM); The sixth interface (J6) on the AC pile controller (AM) is connected to the L1 / H1 pin of the first interface (J1) via the CANH / CANL pin; The three-phase AC charging gun (XT) establishes a communication connection through a watt-hour meter (PJ) arranged on the three-phase line.

7. The three-phase AC charging pile according to claim 6, characterized in that: An AC contactor (KM) is also provided on the A / B / C three-phase lines of the three-phase AC charging gun (XT), and a resistor and a capacitor (RC) are connected in parallel at both ends of the AC contactor (KM), and the two ends are respectively connected to the L1 / N1 pins on the seventh interface (J7) on the AC pile controller (AM).

8. The three-phase AC charging pile according to claim 7, characterized in that: A leakage main circuit breaker (QF) is provided on the A / B / C three-phase lines and the neutral line of the three-phase AC charging gun (XT), and the three-phase AC charging gun (XT) is connected to the lightning arrester (FVC) through a lightning protection circuit breaker (QF1).

9. The three-phase AC charging pile according to claim 8, characterized in that: One of the A / B / C three-phase lines and the neutral line of the three-phase AC charging gun (XT) are respectively connected to the Lin / Nin pins of the eighth interface (J8) on the AC pile controller (AM) through an auxiliary circuit breaker (QF2), and are connected to the AC / L and AC / N pins of the auxiliary charging module (UP).

10. The three-phase AC charging pile according to claim 9, characterized in that: The thirteenth interface (J13) on the AC pile controller (AM) is connected to the gun holder of the AC charging gun holder (XC) through pins 3 and 4; The auxiliary charging module (UP) is also connected to the tenth interface (J10) on the AC pile controller (AM) via the +12V / -12V / +5V pins; The two gun holder indicator lights of the AC charging gun holder (XC) are powered by the tenth interface (J10) and the auxiliary charging module (UP) respectively.

Images