Charging pile and intelligent test system for direct current charging pile

Abstract

The utility model relates to the technical field of charging piles, and discloses a charging pile which comprises a direct current charging pile body, charging gun placing sockets are symmetrically arranged at the left end and the right end of the direct current charging pile body, charging guns are inserted into the two charging gun placing sockets, a handle is installed at the other end of each charging gun, and a cable is installed at the other end of each handle. The other end of the cable is installed at the rear end of the bottom of the direct-current charging pile body. According to the utility model, the charging port of the new energy automobile which is being charged can be sheltered from rain in rainy days, so that the charging port is prevented from being damaged by long-time erosion of rainwater.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging pile technical field especially, relates to a kind of charging pile and intelligent test system for direct current charging pile. BACKGROUND

[0002] Charging pile, also known as electric vehicle charging station or electric vehicle power supply device, is a device that provides electric energy for electric vehicles, enabling electric vehicles to store enough electric energy to support their operation.

[0003] However, the existing charging pile has the problem that it cannot shield the charging port of the new energy vehicle being charged from rain, which can cause the charging port to be easily damaged under long-term rain erosion. Therefore, a charging pile is proposed. SUMMARY

[0004] The utility model discloses a charging pile, solve the problem in the background art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A charging pile, comprising a direct current charging pile body, the direct current charging pile body is symmetrically provided with a charging gun placing socket at the left and right ends, two charging gun placing sockets are inserted with a charging gun, the other end of the charging gun is provided with a handle, the other end of the handle is provided with a cable, the other end of the cable is installed at the bottom of the direct current charging pile body, and an auxiliary mechanism is installed on the charging gun.

[0007] Preferably, the charging gun is electrically connected with the handle, the handle is electrically connected with the cable, and the cable is electrically connected with the direct current charging pile body.

[0008] Preferably, the auxiliary mechanism comprises an annular fixing plate, the annular fixing plate is fixedly sleeved on the outer end surface of the left end of the charging gun, a sealing rubber ring is installed on the right end of the annular fixing plate, and the sealing rubber ring is located on the outer end surface of the charging gun, a waterproof bag is installed between the annular fixing plate and the sealing rubber ring, and the waterproof bag is located on the outer end of the charging gun.

[0009] Preferably, four connecting rod barrels are fixedly installed on the right end surface of the annular fixing plate in a ring array, a spring is fixedly installed on the left end inside the connecting rod barrel, the other end of the spring is fixedly installed with a connecting rod, the connecting rod is slidably penetrated into the right end of the connecting rod barrel, and is fixedly connected with the left end surface of the sealing rubber ring.

[0010] Preferably, the connecting rod is slidably attached to the inner wall of the connecting rod barrel in the horizontal direction.

[0011] Preferably, four insertion slots are formed in the left end surface of the sealing rubber ring in a ring array, a ring-shaped electromagnet block two is fixedly installed in the insertion slot, and a ring-shaped electromagnet block one is fixedly installed on the right end of the connecting rod barrel and located outside the connecting rod.

[0012] The right end of the four connecting rods is fixedly connected with the right end face inside the four slots respectively, four annular electromagnet blocks two are located outside the four connecting rods respectively, and four annular electromagnet blocks one are magnetically adsorbed to the left end of the four annular electromagnet blocks two respectively.

[0013] A kind of intelligent test system for direct current charging pile, including direct current charging interface circuit simulation unit, BMS simulation unit, oscilloscope, power analyzer, auxiliary power supply testing device, short-circuit protection testing device, high-performance industrial computer, the direct current charging interface circuit simulation unit includes battery port voltage simulation unit, positive and negative bus insulation resistance simulation unit, battery reverse connection simulation unit;

[0014] The BMS simulation unit is connected with all hardware units, processes the information transmitted by charging pile and each module, including electrical sampling information, message information, and simulates the response of battery management system to test the compatibility and communication capability of charging pile and battery management system;

[0015] The battery port voltage simulation unit, the CAN line of national standard gun seat and the CP line of European standard and American standard gun seat are connected, for switching charging standard and communication mode, different protocol gun head is inserted to automatically activate corresponding communication standard;

[0016] The battery port voltage simulation unit is used to simulate the voltage change of battery port, for testing the charging control strategy and response of charging pile;

[0017] The positive and negative bus insulation resistance simulation unit is used to simulate the insulation resistance between positive and negative bus, to test the insulation performance and safety of charging pile;

[0018] The battery reverse connection simulation unit is used to simulate the battery reverse connection condition, and the upper computer can test whether the charging pile has fault detection and processing capability;

[0019] The oscilloscope contains 4 channels, which are lower computer trigger signal, K1K2 front-end voltage, K1K2 rear-end voltage, respectively, for observing and analyzing the voltage and current waveform in the working process of charging pile, to calculate the overshoot current, voltage and its falling time and other test parameters in the form of triggering, to ensure that the electrical performance of charging pile meets the standard;

[0020] The power analyzer is mainly used for measuring and analyzing the electrical characteristics of charging pile input and output end, such as efficiency, maximum power and voltage and current stability precision.

[0021] The auxiliary power supply testing device is used to simulate and test the auxiliary power supply system of direct current charging pile.

[0022] The high-performance industrial computer mainly serves as the control center of the testing system, running the testing software, collecting and analyzing test data, and, in addition to fulfilling the standard requirements for testing functions, saving test records, displaying test results, and querying test history.

[0023] The beneficial effects of this utility model are:

[0024] When the charging gun is inserted into the charging port of the new energy vehicle, magnet one and magnet two can be closed. At this time, the spring returns to its original deformation and drives the connecting rod. Finally, the sealing rubber ring is attached to the new energy vehicle. At this time, the waterproof bag is opened, which can cover the right end of the charging gun and the charging port, thereby achieving the effect of rain protection.

[0025] This automated process enables comprehensive testing of GB, CCS1, and CCS2 charging pile products on a single hardware platform, including online debugging, offline testing, aging tests, and functional verification. The system uses an internal BMS simulator to interact with the charging pile, simulating the battery charging process in real time. This effectively avoids the limitations of real-vehicle testing, such as incomplete test content, inability to simulate real faults, and difficulties in verifying the auxiliary power system. The intelligent testing system for DC charging piles is designed in accordance with national standards such as GB / T 18487.1-2015 / 2023. It can accurately detect charging voltage, current, and auxiliary power parameters, significantly improving testing efficiency and accuracy, reducing resource consumption, and extending equipment lifespan, demonstrating significant professional advantages and practical value. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a charging pile proposed in this utility model;

[0027] Figure 2 This is a partial structural schematic diagram of a charging pile proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the auxiliary mechanism in a charging pile proposed in this utility model;

[0029] Figure 4 This is an exploded view of an auxiliary mechanism in a charging pile proposed in this utility model.

[0030] The diagram shows: 1 DC charging pile body, 2 charging gun placement port, 3 charging gun, 4 handle, 5 cable, and 6 auxiliary mechanism.

[0031] 601 Annular fixing plate, 602 waterproof bag, 603 connecting rod cylinder, 604 sealing rubber ring, 605 Annular electromagnet block one, 606 spring, 607 connecting rod, 608 slot, 609 Annular electromagnet block two. Detailed Implementation

[0032] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Embodiment

[0033] With reference to Figures 1-4 A charging pile, comprising a direct-current charging pile body 1, two charging gun placing sockets 2 are symmetrically arranged at the left and right ends of the direct-current charging pile body 1, two charging guns 3 are arranged in the two charging gun placing sockets 2, a handle 4 is arranged at the other end of the charging gun 3, a cable 5 is arranged at the other end of the handle 4, the other end of the cable 5 is arranged at the bottom rear end of the direct-current charging pile body 1, and an auxiliary mechanism 6 is arranged on the charging gun 3.

[0034] In use, the charging gun 3 can be pulled out of the charging gun placing socket 2 by holding the handle 4, and then inserted into the charging port of the new energy vehicle, so that the new energy vehicle is charged. The auxiliary mechanism 6 can shield the charging port of the new energy vehicle being charged from rain, so as to avoid damage to the charging port caused by long-term rain erosion.

[0035] In the embodiment, the charging gun 3 is electrically connected with the handle 4, the handle 4 is electrically connected with the cable 5, and the cable 5 is electrically connected with the direct-current charging pile body 1.

[0036] The auxiliary mechanism 6 comprises a ring-shaped fixing plate 601, the ring-shaped fixing plate 601 is fixedly sleeved on the outer end face of the left end of the charging gun 3, a sealing rubber ring 604 is arranged at the right end of the ring-shaped fixing plate 601 and located on the outer end face of the charging gun 3, a waterproof bag 602 is arranged between the ring-shaped fixing plate 601 and the sealing rubber ring 604 and located on the outer end of the charging gun 3, four connecting rod barrels 603 are fixedly arranged in an annular array at the right end face of the ring-shaped fixing plate 601, a spring 606 is fixedly arranged at the inner left end of the connecting rod barrel 603, the other end of the spring 606 is fixedly arranged with a connecting rod 607, the connecting rod 607 is slidably penetrated into the right end of the connecting rod barrel 603 and fixedly connected with the left end face of the sealing rubber ring 604, the outer end of the connecting rod 607 is slidably attached to the inner wall of the connecting rod barrel 603 along the horizontal direction, four insertion slots 608 are arranged in an annular array at the left end face of the sealing rubber ring 604, a ring-shaped electromagnet block two 609 is fixedly arranged in each insertion slot 608, a ring-shaped electromagnet block one 605 is fixedly arranged at the right end of the connecting rod barrel 603 and located outside the connecting rod 607, the right end of each connecting rod 607 is fixedly connected with the right end face of each insertion slot 608, each ring-shaped electromagnet block two 609 is located outside each connecting rod 607, and each ring-shaped electromagnet block one 605 is magnetically attached to the left end of each ring-shaped electromagnet block two 609.

[0037] When the charging gun 3 is inserted into the new energy charging port, the first magnet block and the second magnet block can be closed, at this time the spring 606 restores the deformation to drive the connecting rod 607, and finally the sealing rubber ring 604 is attached to the new energy vehicle, at this time the waterproof bag 602 is opened, and the right end of the charging gun 3 and the charging port are covered, so that the rainproof effect is achieved. Embodiments

[0038] A kind of intelligent test system for direct current charging pile, compared with embodiment 1, still include direct current charging interface circuit simulation unit, BMS simulation unit, oscilloscope, power analyzer, auxiliary power supply test device, short-circuit protection test device, high-performance industrial computer, the direct current charging interface circuit simulation unit includes battery port voltage simulation unit, positive and negative bus insulation resistance simulation unit, battery reverse connection simulation unit;

[0039] Power analyzer can be selected and installed;

[0040] The BMS simulation unit is connected with all hardware units, processes the information transmitted by charging pile and each module, including electrical sampling information, message information, and simulates the response of battery management system to test the compatibility and communication capability of charging pile and battery management system;

[0041] The battery port voltage simulation unit, the CAN line of national standard gun seat and the CP line of European standard and American standard gun seat are connected, for switching charging standard and communication mode, different protocol gun head is inserted to automatically activate the corresponding communication standard;

[0042] The battery port voltage simulation unit is used to simulate the voltage change of battery port, for testing the charging control strategy and response of charging pile;

[0043] The positive and negative bus insulation resistance simulation unit is used to simulate the insulation resistance between positive and negative bus, to test the insulation performance and safety of charging pile;

[0044] The battery reverse connection simulation unit is used to simulate the battery reverse connection condition, combined with the regulation of host computer, to test whether the charging pile has fault detection and processing capability;

[0045] The oscilloscope includes 4 channels, which are lower computer trigger signal, K1K2 front-end voltage, K1K2 rear-end voltage, for observing and analyzing the voltage and current waveform in the working process of charging pile, to calculate the overshoot current, voltage and its falling time and other test parameters in the form of triggering, to ensure that the electrical performance of charging pile meets the standard;

[0046] The power analyzer is mainly used for measuring and analyzing the electrical characteristics of charging pile input and output end, such as efficiency, maximum power, voltage and current stability precision.

[0047] The auxiliary power supply test device is used for simulating and testing an auxiliary power supply system of a direct current charging pile.

[0048] The high-performance industrial computer mainly serves as a control center of the test system, runs test software, collects and analyzes test data, and realizes saving of test records, display of test results, query of test history, etc. on the basis of realizing standard required test functions.

[0049] The intelligent test system for the direct current charging pile executes standards of GB / T 18487.1-2015 / 2023, GB / T 34657.1-2017, NB / T 33002-2018, NB / T 33008.2-2018, GB / T 44263-2024 and GB / T 39752-2024, can realize an automatic test process on a single hardware platform, and is mainly applied to online debugging, offline detection, aging test and function verification of GB, CCS1, CCS2 and other direct current charging pile products. The charging process and various faults are simulated, so that the problems of inconvenient test use, incomplete test content, inability to simulate real faults, inability to verify the auxiliary power supply system, time and labor consumption of vehicle power battery charging and discharging, and shortened battery life caused by frequent charging and discharging are avoided. The utility model discloses a test system, which realizes real-time simulation of the battery charging process through the internal BMS simulator and the direct current charging pile of the electric vehicle, realizes real-time simulation of the battery charging process through the internal BMS simulator and the direct current charging pile of the electric vehicle, when the direct current charger charging gun is connected to the test equipment interface, the test equipment completes connection detection, charging handshake, configuration and charging according to the non-vehicle-mounted charger and BMS communication protocol, and detects charging voltage and current, auxiliary power supply voltage and current.

[0050] With the publication of the New Energy Vehicle Industry Development Plan (2021-2035), it is expected that the new energy vehicle ownership in China will reach 6420 million by 2030. Based on the construction goal of 1:1 of vehicles and piles, China will face a construction gap of 6300 million charging piles in the next ten years. Under this background, the stability and reliability test of the direct current charging pile is particularly important.

[0051] However, in the prior art, the test of the direct current charging pile mostly uses an electric vehicle as a detection device, and there are problems of inconvenient test, incomplete test content, inability to simulate real faults, time and labor consumption, shortened battery life caused by frequent charging and discharging, and possible damage of the test vehicle caused by the charging pile fault. These problems seriously restrict the efficiency and safety of the automatic production process of the charging pile industry.

[0052] In addition, there is currently no DC charging pile test system control strategy that can be automatically completed for multiple standard requirements in the same hardware system, especially in the fields of production workshops, laboratories, installation and debugging, and scientific research and development. The demand for automatic GB / T 18487.1-2015 / 2023, GB / T 34657.1-2017, NB / T 33002-2018, NB / T 33008.2-2018, and other series of standard protocol consistency tests is particularly urgent.

[0053] The existing BMS simulator has low resource utilization and cannot intelligently control hardware resources to follow the current test requirements in real time, which limits the development of DC charging pile test technology, and thus an intelligent test system for DC charging piles is proposed. Embodiment

[0054] A test control strategy of an intelligent test system for DC charging piles, the embodiment compared to embodiment 2 further includes the following steps:

[0055] S1: The test system should have all the functions of simulating and controlling the DC charging pile test process;

[0056] S11: Open the upper computer software and connect the power meter through RS485 communication; set the BMS simulator to program control mode according to the upper and lower computer protocol; set the oscilloscope to a specific display range scrolling mode through SCPI; connect the gun seat CAN, CAN2 connection program control load through CAN box 1 bus heartbeat message connection;

[0057] S12: disconnect and close the BMS simulator internal relay to simulate the action of pulling out and inserting the gun, and send BMS messages from the charging pile gun head CAN to simulate the battery management system to make the charging pile enter the handshake, configuration, and charging phase;

[0058] S13: In a complete charging pile charging process, the same charging process is reused, and in the test items, the standard requirements simulate faults or program control each instrument to test voltage, current, power, and other parameters in different charging phases, and finally determine whether a test is qualified through fault messages or parameter threshold values;

[0059] S2: The test equipment should have all the test data and test configuration saving and exporting functions;

[0060] S21: Before testing, allow users to manually configure and save specific parameters such as requested voltage, current, and simulated R4 resistance in the test items database;

[0061] S22: In the test, the test intermediate result is displayed in real time, the oscilloscope waveform is intercepted, and a history database is saved, specifically, a new record is generated whenever there is a new test result for the same data bit, otherwise, the empty position under the last record is saved, the history record is distinguished by time, and history record browsing and report export are supported;

[0062] S23: For the same standard test item, automatic jumping to the next item until all items are completed should be supported, and professional test report export function should be provided;

[0063] S3: The test system should have an unexpected recovery capability to ensure data security when unexpected situations occur;

[0064] S31: If the equipment is unexpectedly powered off or the industrial computer is unexpectedly shut down, the test state and data and graphs before the accident can be prompted to recover, and the test can be continued by clicking start;

[0065] S32: If any test instrument or hardware device communication is interrupted during the test process, the disconnection reconnection is initiated for 3 times;

[0066] S33: If the communication is not operated in time, the test is automatically stopped, and the database is read to continue the test from the current item when starting again;

[0067] S4: The test system has an open test capability, allowing users to independently regulate and control the relay switch, resistance value, etc. in the direct current charging control guide circuit.

[0068] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0069] In addition, the terms "first", "second", and the like are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0070] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A charging column comprising a direct current charging column body (1), characterized in that, The direct current charging pile body (1) is symmetrically provided with charging gun placing sockets (2) at the left and right ends, charging guns (3) are inserted into the two charging gun placing sockets (2), handles (4) are installed at the other ends of the charging guns (3), cables (5) are installed at the other ends of the handles (4), the other ends of the cables (5) are installed at the bottom rear end of the direct current charging pile body (1), and auxiliary mechanisms (6) are installed on the charging guns (3).

2. The charging pile according to claim 1, characterized in that, The charging gun (3) is electrically connected with the handle (4), the handle (4) is electrically connected with the cable (5), and the cable (5) is electrically connected with the direct current charging pile body (1).

3. The charging pile according to claim 2, characterized in that, The auxiliary mechanism (6) comprises an annular fixing plate (601), the annular fixing plate (601) is fixedly sleeved on the outer end face of the left end of the charging gun (3), a sealing rubber ring (604) is installed at the right end of the annular fixing plate (601) and located on the outer end face of the charging gun (3), a waterproof bag (602) is installed between the annular fixing plate (601) and the sealing rubber ring (604) and located on the outer end of the charging gun (3).

4. The charging pile according to claim 3, characterized in that, Four connecting rod barrels (603) are fixedly installed in an annular array on the right end face of the annular fixing plate (601), a spring (606) is fixedly installed at the left end in the connecting rod barrel (603), a connecting rod (607) is fixedly installed at the other end of the spring (606), and the right end of the connecting rod (607) slidably penetrates the right end of the connecting rod barrel (603) and is fixedly connected with the left end face of the sealing rubber ring (604).

5. The charging pile according to claim 4, characterized in that, The outer end of the connecting rod (607) and the inner wall of the connecting rod barrel (603) are slidably attached in the horizontal direction.

6. The charging pile according to claim 5, characterized in that, Four insertion grooves (608) are formed in an annular array on the left end face of the sealing rubber ring (604), four annular electromagnet blocks two (609) are fixedly installed in the insertion grooves (608), and an annular electromagnet block one (605) is fixedly installed at the right end of the connecting rod barrel (603) and located outside the connecting rod (607). The right ends of the four connecting rods (607) are fixedly connected with the right end faces in the four insertion grooves (608), the four annular electromagnet blocks two (609) are located outside the four connecting rods (607), and the four annular electromagnet blocks one (605) are magnetically attached to the left ends of the four annular electromagnet blocks two (609).

7. A direct current charging pile-oriented intelligent testing system applied to the charging pile of any one of claims 1-6, characterized in that, The direct current charging interface circuit simulation unit, the BMS simulation unit, the oscilloscope, the power analyzer, the auxiliary power supply testing device, the short circuit protection testing device, and the high-performance industrial computer are included. The direct current charging interface circuit simulation unit includes a battery port voltage simulation unit, a positive and negative bus insulation resistance simulation unit, and a battery reverse connection simulation unit. The BMS simulation unit is connected with all hardware units, processes information transmitted by the charging pile and each module, including electrical sampling information and message information, and simulates the response of the battery management system to test the compatibility and communication capability of the charging pile and the battery management system. The battery port voltage simulation unit, the CAN line of the national standard gun seat, and the CP line of the European standard and American standard gun seat are connected to switch the charging standard and the communication mode, and different protocol gun heads are automatically activated after being inserted to activate the corresponding communication standard. The battery port voltage simulation unit is configured to simulate voltage variation of the battery port, and is configured to test charging control strategy and response of the charging pile; The positive and negative bus insulation resistance simulation unit is configured to simulate insulation resistance between the positive and negative buses, and is configured to test insulation performance and safety of the charging pile; The battery reverse connection simulation unit is configured to simulate the case of battery reverse connection, and is configured to test whether the charging pile has fault detection and processing capability in combination with the upper computer control; The oscilloscope includes four channels, which are respectively a lower computer trigger signal, K1K2 front-end voltage, K1K2 rear-end voltage, and is configured to observe and analyze voltage and current waveforms in the working process of the charging pile in a triggered manner to calculate test parameters such as overshoot current, voltage and its falling time, and to ensure that the electrical performance of the charging pile meets the standard; The power analyzer is mainly configured to measure and analyze electrical characteristics such as efficiency, maximum power, and steady voltage and current accuracy of input and output ends of the charging pile; The auxiliary power supply testing device is configured to simulate and test the auxiliary power supply system of the direct-current charging pile; The high-performance industrial computer mainly serves as a control center of the testing system, runs testing software, collects and analyzes testing data, and realizes saving of testing records, display of testing results, and query of testing history on the basis of realizing standard required testing functions.

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