Integrated charger detection equipment for electric bicycle

Abstract

The utility model discloses an integrated charger detection device for an electric bicycle, which belongs to the technical field of charger detection, and comprises a main control part for controlling the whole detection process, an IO control part for signal conversion and isolation, a control cabinet for executing a detection function, and a wiring panel for connecting a detected charger, the main control part is electrically connected with the IO control part; the device further comprises a diode and a plurality of contactors. Wherein an alternating current power supply, a voltage-stabilized power supply, an electronic load, an alternating current voltage sensor, a direct current voltage sensor and a current sensor are arranged in the control cabinet; the wiring panel comprises an alternating current power supply patch board, a new national standard 2 + 2 jack, a new national standard 2 + 4 jack, a universal jack and a short circuit failure joint; the technical problems that in the prior art, a detection loop is complex to build, equipment is scattered, automation control is difficult, and safety protection measures are lacked are solved.

Description

Technical Field

[0001] This utility model belongs to the field of charger testing technology, and in particular relates to an integrated testing device for electric bicycle chargers. Background Technology

[0002] Chargers for electric bicycles are essential components. With the implementation of the new standard GB42296-2022, new requirements have been introduced for charger testing. These tests include multiple items such as input and output current, power supply adaptability, component failure, plug discharge, short circuit, and incorrect connection.

[0003] Currently, the industry mainly uses two methods for charger testing: one is to use independent instruments such as regulated power supplies, electronic loads, oscilloscopes, and diodes; the other is to use specialized testing equipment such as short-circuit testers and electrical parameter testers. Testing personnel need to connect the testing circuit themselves according to the standard requirements and perform the testing step by step.

[0004] The existing technology has the following technical problems:

[0005] First, the construction of the detection circuit is complex, requiring inspection personnel to have professional knowledge of circuit connection in order to correctly construct the detection environment;

[0006] Second, various instruments and equipment are scattered and independent, requiring separate operation and control, making it impossible to achieve unified automated control;

[0007] Third, the testing process lacks necessary safety protection measures, especially when conducting tests for dangerous circuits such as misconnections and short circuits, which pose safety hazards.

[0008] In response, this invention provides an integrated testing device for electric bicycle chargers that simplifies the testing process and improves testing safety. Utility Model Content

[0009] The purpose of this utility model is to provide an integrated testing device for electric bicycle chargers, in order to solve the technical problems mentioned in the background art, such as the complex construction of the testing circuit, the difficulty in automatic control due to the dispersed equipment, and the lack of safety protection measures in the existing electric bicycle charger testing devices.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] An integrated testing device for electric bicycle chargers includes: a main control unit for controlling the entire testing process, an I / O control unit for signal conversion and isolation, a control cabinet for performing testing functions, and a wiring panel for connecting the charger under test; the main control unit is electrically connected to the I / O control unit; it also includes diodes and several contactors; wherein:

[0012] The control cabinet is equipped with an AC power supply, a regulated power supply, an electronic load, an AC voltage sensor, a DC voltage sensor, and a current sensor.

[0013] The wiring panel includes an AC power strip, a new national standard 2+2 socket, a new national standard 2+4 socket, a universal socket, and a short-circuit failure connector;

[0014] The AC power supply is electrically connected to the AC power socket of the wiring panel via contactor number six; the regulated power supply is connected to contactor number three via diode and contactor number two; the electronic load is connected to contactor number three via contactor number one; contactor number three is electrically connected to the three sockets of the wiring panel via the current sensor and the DC voltage sensor; the AC power supply, regulated power supply, and electronic load are electrically connected to the main control unit via a 485 communication bus.

[0015] Preferably, the main control unit includes a PC for controlling the detection process and a data acquisition card for acquiring analog signals and controlling the opening and closing state of the contactor.

[0016] Preferably, the IO control section includes an optocoupler isolation module, several intermediate relays, and several control coils.

[0017] Preferably, it also includes an explosion-proof cabinet for safety protection, the explosion-proof cabinet including a positive terminal clamp and a negative terminal clamp for connecting the rechargeable battery.

[0018] Preferably, the voltage sensor, DC voltage sensor, and current sensor are all Hall sensors.

[0019] Preferably, the data acquisition card of the main control unit is connected to the input terminal of the optocoupler isolation module via a data cable, and the output terminal of the optocoupler isolation module is connected to six intermediate relays, and each intermediate relay is connected to a control coil.

[0020] Preferably, the live wire and neutral wire input terminals of the AC power supply are connected to the AC power socket on the terminal block via a No. 6 contactor; the AC voltage sensor is connected in parallel between the No. 6 contactor and the AC power socket, with its positive and negative terminals connected to the live wire side and the neutral wire side, respectively.

[0021] Preferably, the regulated power supply is connected to terminal 1 of contactor 3 via diode V1 and contactor 2; the electronic load is also connected to terminal 1 of contactor 3 via contactor 1; terminal 2 of contactor 3 is connected to node 1 via current sensor and DC voltage sensor, and node 1 is connected to the positive terminals of the three sockets on the wiring panel; the regulated power supply branch and the electronic load branch are connected in parallel and share the current sensor and DC voltage sensor.

[0022] Preferably, the negative terminal of the regulated power supply is connected to terminal 3 of contactor 3 via contactor 2; the negative terminal of the electronic load is also connected to terminal 3 of contactor 3 via contactor 1; terminal 4 of contactor 3 is connected to node 2 via a DC voltage sensor, and node 2 is connected to the negative terminals of the three sockets on the wiring panel; the negative terminals of the regulated power supply and the electronic load are connected in parallel and share the same DC voltage sensor.

[0023] Preferably, the positive terminal of the explosion-proof cabinet is connected in parallel between terminal 2 of the No. 3 contactor and the current sensor, and the negative terminal of the explosion-proof cabinet is connected in parallel between the common negative terminal and the negative terminal of the DC voltage sensor.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] This utility model provides an integrated electric bicycle charger testing device, which effectively solves the technical problems in the prior art, such as complex testing circuit construction, dispersed equipment making automated control difficult, and lack of safety protection measures.

[0026] Specifically, this invention reliably connects a regulated power supply, electronic load, data acquisition card, diodes, and other instruments to form a universal detection circuit. A dedicated wiring panel (including new national standard 2+2 sockets, 2+4 sockets, and universal sockets) allows testing personnel to complete the connection simply by correctly connecting the charger to the corresponding socket, solving the problem of complex circuit setup. This invention uses a PC and independently developed software system for unified control, communicating with various instruments (such as AC power supplies, regulated power supplies, and electronic loads) via Modbus serial communication. A multi-functional data acquisition card is used for analog signal acquisition and I / O control, and Hall effect sensors are used to acquire voltage and current signals, achieving automated control of the equipment. This invention effectively solves safety hazards during testing by equipping the circuit with an explosion-proof cabinet for battery placement during misconnection testing, providing a short-circuit failure connector for component failure detection, and controlling the switching of various testing functions through contactor opening and closing. Furthermore, diodes are incorporated into the circuit to prevent reverse current flow, further ensuring testing safety.

[0027] This invention not only significantly improves testing efficiency and simplifies the operation process, but also reduces the professional skills required of testing personnel, allowing them to complete the test simply by understanding the standard requirements without needing to master too much professional knowledge. At the same time, it also ensures the safety of the testing process and has good practical value. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the circuit structure of a preferred embodiment of the present invention;

[0029] Figure 2This is a schematic diagram of data interaction in a preferred embodiment of the present invention.

[0030] In the diagram: 1. Main control unit; 2. IO control unit; 3. Control cabinet; 4. Wiring panel; 5. Explosion-proof cabinet; 11. PC; 12. Data acquisition card; 21. Optocoupler isolation module; 22. Intermediate relay; 23. Control coil; 31. AC power supply; 32. Regulated power supply; 33. Electronic load; 34. AC voltage sensor; 35. Current sensor; 36. DC voltage sensor; 41. AC power supply socket; 42. New national standard 2+2 socket; 43. New national standard 2+4 socket; 44. Universal socket; 45. Short-circuit failure connector. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] like Figure 1 and Figure 2 As shown:

[0033] First preferred embodiment:

[0034] An integrated testing device for electric bicycle chargers includes: a main control unit 1 for controlling the entire testing process, an I / O control unit 2 for signal conversion and isolation, a control cabinet 3 for performing testing functions, a wiring panel 4 for connecting the charger under test, and an explosion-proof cabinet 5 for safety protection; wherein the main control unit 1 is electrically connected to the I / O control unit 2 and the control cabinet 3, and the control cabinet 3 is electrically connected to the wiring panel 4 and the explosion-proof cabinet 5.

[0035] The following content details each component and its connection method:

[0036] I. Main Control Section 1:

[0037] The main control unit 1 is the core control unit of the electric bicycle charger testing equipment, comprising two core components: PC11 and data acquisition card 12. PC11 communicates and controls instruments such as the AC power supply 31, the regulated power supply 32, and the electronic load 33 via Modbus serial communication. Data acquisition card 12 is a multi-functional data acquisition card, combining analog signal acquisition and I / O control functions, used to acquire analog signals from the voltage and current sensors 35 and control the contactors. PC11 is equipped with independently developed software for unified control of the entire testing process.

[0038] The data acquisition card 12 is connected to the voltage sensor and the current sensor 35 to acquire analog signals; the data acquisition card 12 is connected to the contactor through IO control to control the opening and closing state of the contactor; the PC 11 is connected to instruments and equipment such as the AC power supply 31, the regulated power supply 32, and the electronic load 33 through Modbus serial communication.

[0039] The design of this main control system allows testing personnel to complete the tests simply by understanding the standard requirements, without needing to acquire extensive other professional knowledge. Software control enables the rapid completion of multiple tests, thus improving testing efficiency.

[0040] II. I / O Control Section 2:

[0041] The IO control section 2 adopts a multi-level control structure to achieve signal conversion and electrical isolation. Specifically, the data acquisition card 12 of the main control section 1 is connected to the input terminal of the optocoupler isolation module 21 through a dedicated data line. The output terminal of the optocoupler isolation module 21 is connected to six intermediate relays 22 (KA1, KA2...KA6), and each intermediate relay 22 is then connected to the corresponding control coil 23.

[0042] During data interaction, when it is necessary to control a certain output, the data acquisition card 12 first outputs a 5V TTL level control signal to the corresponding channel of the optocoupler isolation module 21. After receiving the 5V control signal, the optocoupler isolation module 21 achieves electrical isolation through its internal opto-conversion device and converts the signal into a 24V DC control signal for output. The 24V control signal is used to drive the corresponding intermediate relay 22. When the coil of the intermediate relay 22 is energized, its contacts close, thereby providing working power to the corresponding actuator coil.

[0043] 3. Wiring panel 4:

[0044] Wiring panel 4 includes the following interface components:

[0045] An AC power strip 41 is provided for a household AC power supply 31 interface for powering a charger. The AC power strip 41 includes a live wire port and a neutral wire port.

[0046] The new national standard 2+2 socket 42 conforms to the corresponding socket of the 2+2 charging plug as specified in GB42296-2022 standard. The new national standard 2+2 socket 42 includes a positive port and a negative port.

[0047] The new national standard 2+4 socket 43 conforms to the corresponding socket of the 2+4 charging plug as specified in GB42296-2022 standard. The new national standard 2+4 socket 43 includes a positive port and a negative port.

[0048] The universal socket 44 consists of two terminals, positive and negative, for users to connect the wires themselves. The universal socket 44 includes a positive terminal and a negative terminal.

[0049] The short-circuit failure connector 45 consists of two terminals, positive and negative, and is used to connect the two ends of the component that needs to be short-circuited. The short-circuit failure connector 45 includes a positive terminal and a negative terminal.

[0050] The AC power strip 41, the new national standard 2+2 socket 42, the new national standard 2+4 socket 43, the universal socket 44, and the short-circuit failure connector 45 in the wiring panel 4 are electrically connected to the internal components of the control cabinet 3. For specific connection methods, please refer to the detailed introduction of the control cabinet 3.

[0051] In terms of data interaction, the wiring panel 4 itself serves as an interface component, mainly used to connect the charger under test to the testing equipment. It does not directly collect data; the relevant electrical parameter measurements are completed through the voltage sensor and current sensor 35 in the control cabinet 3.

[0052] IV. Explosion-proof cabinet 5:

[0053] The explosion-proof cabinet 5 includes a positive terminal clamp and a negative terminal clamp for connecting the battery being charged. When performing charger misconnection detection (the charger and the positive and negative terminals of the battery being charged are reversed), the potentially dangerous battery is placed inside the explosion-proof cabinet 5 for protection.

[0054] The positive and negative terminal clamps of the explosion-proof cabinet 5 are electrically connected to the internal components of the control cabinet 3, forming a complete detection circuit. For specific connection details, please refer to the detailed description of the control cabinet 3. The explosion-proof cabinet 5 serves to physically isolate and protect the electronic components and control system within the control cabinet 3.

[0055] V. Control Cabinet 3:

[0056] The control cabinet 3 includes:

[0057] AC power supply 31 (model LABCK-AC11-3KVA(T)) is used to output AC voltage;

[0058] A regulated power supply 32 (model 100V10A) is used to output DC voltage;

[0059] Electronic load 33 (model KL7102 1200W) is used to draw voltage and current.

[0060] AC voltage sensor 34 is used to collect the AC voltage of the input voltage at the power supply terminal of the charger;

[0061] DC voltage sensor 36 is used to collect the DC voltage at the output terminal of the charger;

[0062] Current sensor 35 is used to collect the charger output current; wherein:

[0063] AC voltage sensor 34, DC voltage sensor 36 and current sensor 35 are all Hall effect sensors.

[0064] The live wire and neutral wire input terminals of AC power supply 31 are connected to AC power socket 41 on terminal panel 4 via contactor K6 (number 6); AC voltage sensor 34 is connected in parallel between contactor K6 (number 6) and AC power socket 41, with its positive and negative terminals connected to the live wire side and the neutral wire side, respectively.

[0065] The regulated power supply 32 is connected to terminal 1 of contactor 3 via diode V1 and contactor K2. The electronic load 33 is also connected to terminal 1 of contactor K3 via contactor K1. Terminal 2 of contactor K3 is connected to node 1 via current sensor 35 and DC voltage sensor 36. Node 1 is connected to the positive terminals of the three sockets (New National Standard 2+2, New National Standard 2+4, and Universal Socket 44) on the wiring panel 4. This connection method allows the regulated power supply 32 branch and the electronic load 33 branch to be connected in parallel, sharing the current sensor 35 and DC voltage sensor 36.

[0066] The negative terminal of the regulated power supply 32 is connected to terminal 3 of contactor K3 via contactor K2; the negative terminal of the electronic load 33 is also connected to terminal 3 of contactor K3 via contactor K1; terminal 4 of contactor K3 is connected to node 2 via DC voltage sensor 36, and node 2 is connected to the negative terminals of the three sockets (New National Standard 2+2, New National Standard 2+4, and Universal Socket 44) on the wiring panel 4. This connection method allows the negative branches of the regulated power supply 32 and the electronic load 33 to be connected in parallel and share the DC voltage sensor 36.

[0067] The AC power supply 31, the regulated power supply 32, and the electronic load 33 are all connected to the PC11 of the main control unit 1 via a 485 communication bus to achieve communication control;

[0068] In control cabinet 3, the specific connection methods of each component are as follows:

[0069] The live and neutral wire input terminals of AC power supply 31 are connected to AC power socket 41 on terminal block 4 via contactor K6 (number 6); AC voltage sensor 34 is connected in parallel between the live and neutral wires between contactor K6 (number 6) and AC power socket 41 on terminal block 4. The positive terminal (+) of AC voltage sensor 34 is connected between the live wire terminal (terminal 2) of contactor K6 (number 6) and AC power socket 41, and the negative terminal (-) of AC voltage sensor 34 is connected between the neutral wire terminal (terminal 4) of contactor K6 (number 6) and AC power socket 41.

[0070] The positive input terminal of the regulated power supply 32 is connected to the x1 terminal of diode V1. The x2 terminal of diode V1 is connected to the 1 terminal of contactor K2. The 2 terminal of contactor K2 is connected to the 1 terminal of contactor K3. The wire connected to the 2 terminal of contactor K3 passes through the induction coil of current sensor 35 and is connected to the positive input terminal of DC voltage sensor 36. The positive output terminal of DC voltage sensor 36 is connected to node 1. At the same time, the positive input terminal of electronic load 33 is connected to the 1 terminal of contactor K1. The 2 terminal of contactor K1 is connected to the 1 terminal of contactor K3. The wire connected to the 2 terminal of contactor K3 passes through the induction coil of the same current sensor 35 and is connected to the positive input terminal of DC voltage sensor 36. The positive output terminal of DC voltage sensor 36 is connected to node 1. Node 1 is connected to the positive terminals of the new national standard 2+2 socket 42, the new national standard 2+4 socket 43 and the universal socket 44 on the wiring panel 4, respectively. Through the above connection method, the regulated power supply branch 32 and the electronic load branch 33 form a parallel structure, sharing the positive measurement part of the current sensor 35 and the DC voltage sensor 36.

[0071] The negative input terminal of the regulated power supply 32 is connected to terminal 3 of contactor K2, terminal 4 of contactor K2 is connected to terminal 3 of contactor K3, terminal 4 of contactor K3 is connected to the negative input terminal of DC voltage sensor 36, and the negative output terminal of DC voltage sensor 36 is connected to node 2. Simultaneously, the negative input terminal of the electronic load 33 is connected to terminal 3 of contactor K1, terminal 4 of contactor K1 is connected to terminal 3 of contactor K3, terminal 4 of contactor K3 is also connected to the negative input terminal of DC voltage sensor 36, and the negative output terminal of DC voltage sensor 36 is connected to node 2. Node 2 is connected to the negative terminals of the new national standard 2+2 socket 42, the new national standard 2+4 socket 43, and the universal socket 44 on the wiring panel 4, respectively. Through this connection method, the negative branch of the regulated power supply 32 and the negative branch of the electronic load 33 form a parallel structure, sharing the negative measurement section of the DC voltage sensor 36.

[0072] PC11 controls the output AC voltage of AC power supply 31 via the 485 communication bus, PC11 controls the DC voltage output of regulated power supply 32 via the 485 communication bus, and PC11 controls the operating mode (such as constant voltage mode) and related parameters of electronic load 33 via the 485 communication bus.

[0073] The positive terminal of explosion-proof cabinet 5 is connected in parallel between terminals 2 of contactor K3 and current sensor 35, and the negative terminal of explosion-proof cabinet 5 is connected in parallel between the common negative terminal and the negative terminal of DC voltage sensor 36.

[0074] Different detection functions are achieved through the different opening and closing states of six contactors, K1-K6. The contact points of these contactors are located inside control cabinet 3. By combining different opening and closing states, functions such as charger activation, input / output current detection, power supply adaptability detection, component failure detection, plug discharge detection, short circuit detection, and incorrect connection detection can be realized.

[0075] Second preferred embodiment:

[0076] Methods for activating the charger include:

[0077] S1, connect the charger, electronic load 33, and DC regulated power supply 32 in parallel;

[0078] S2, Connect the charger's input and output ports correctly to the detection panel;

[0079] S3 controls K1, K4, and K5 to disconnect and K2, K3, and K6 to engage via the data acquisition card;

[0080] S4, start AC power supply 31 via communication control;

[0081] S5 controls the regulated power supply 32 to output the charger's rated voltage and start via communication control;

[0082] S6 engages K1 and controls the electronic load 33 via communication to constant voltage mode, setting the voltage to the charger's rated output voltage.

[0083] S7. Once there is current in the circuit, it indicates that the charger has started working. Turn off the output of the regulated power supply 32 and disconnect K2. The charger activation is complete.

[0084] Only after confirming that the charger is functioning properly are subsequent performance and safety tests meaningful and reliable. This is the fundamental condition for ensuring the accuracy of test results. Charger activation is a prerequisite for subsequent tests such as input / output current testing, power supply adaptability testing, component failure testing, and plug discharge testing.

[0085] Third preferred embodiment:

[0086] Methods for detecting the input and output current of a charger include:

[0087] S1, activate charger;

[0088] S2, adjusts the constant voltage value of electronic load 33 via communication;

[0089] S3, record the magnitude of the current in the circuit;

[0090] S3 compares the detected current magnitude with the parameter range specified in the standard.

[0091] The charger input / output current detection is designed to meet the testing requirements for electric bicycle chargers in the new national standard GB42296-2022. By adjusting the constant voltage value of the electronic load 33 after the charger is activated, the current in the circuit is changed, thereby detecting the charger's output current performance under different load conditions. This is one of the important testing items for evaluating the charger's input / output current characteristics.

[0092] The integrated testing equipment for electric bicycle chargers improves testing efficiency by detecting the input and output current of the chargers. The testing can be completed quickly through software control. It also reduces the professional skill requirements for testing personnel, who only need to understand the standard requirements to complete the testing. The integrated design avoids the cumbersome operation of manually connecting various instruments required in traditional testing methods.

[0093] Fourth preferred embodiment:

[0094] Charger power adaptability testing methods include:

[0095] S1, activate charger;

[0096] S2 controls the AC power supply 31 voltage to vary within ±10% via communication.

[0097] S3, observe and record the changes in the charger's output current;

[0098] S4 compares the detected current magnitude with the parameter range specified in the standard.

[0099] Since the grid voltage fluctuates in the actual use environment, this test can verify whether the charger can maintain stable operation under different voltage conditions, provide a suitable charging current for the electric bicycle battery, and avoid damage to the battery or affect the charging effect due to unstable charger output caused by grid fluctuations.

[0100] Fifth preferred embodiment:

[0101] Methods for detecting power failure of charger components include:

[0102] S1, connect the component to be tested for failure (such as a fuse) to the short-circuit failure interface on the panel;

[0103] S2, activate the charger;

[0104] S3, observe the voltage and current values ​​in the circuit at this time (normal operating state);

[0105] S4, through the acquisition card, controls K5 to engage, which causes the connected component to be short-circuited;

[0106] S5. Observe the changes in voltage and current in the circuit to verify whether the charger's protection function is normal when a component fails.

[0107] When the charger's protection function is normal, the charger should be able to quickly cut off the output after a component is short-circuited. Specifically, the output current and voltage should drop rapidly to zero, and the charger should stop working. Conversely, if the charger continues to output current and voltage after a component is short-circuited, or if the output current / voltage cannot be cut off in time, or even if abnormally high current or overvoltage occurs, it indicates a problem with the protection function. In this case, it may damage the charger itself or harm the device being charged, posing a safety hazard.

[0108] The significance of this test is to ensure that the charger has reliable safety protection performance, and can cut off the output in time in case of abnormalities such as component failure, to prevent dangerous situations such as overcurrent and overheating, thereby ensuring the safety of the charging process.

[0109] Sixth preferred embodiment:

[0110] Methods for detecting discharge in charger plugs include:

[0111] S1, activate charger;

[0112] S2, disconnect K6;

[0113] S3, the effective voltage value of the charger's AC input port at 1 second after K6 is disconnected is acquired through data acquisition card 12.

[0114] Seventh preferred embodiment:

[0115] Charger short-circuit detection methods include:

[0116] S1, activate charger;

[0117] S2, the charger output terminal is short-circuited by the communication control electronic load 33;

[0118] S3, continue for a period of time and observe the changes in output current during the process.

[0119] Under normal circumstances, a charger should be able to detect short circuits and automatically protect itself to prevent damage caused by short circuits. By observing the change in output current during a short circuit, it can be determined whether the charger's short circuit protection function meets the standard requirements.

[0120] Eighth preferred embodiment:

[0121] Methods for detecting incorrect charging port connections include:

[0122] S1, disconnect K1, K2, K3, K4, and K5 via data acquisition card 12, and engage K6;

[0123] S2, Place a battery that matches the charger in the explosion-proof cabinet 5, and correctly connect the positive and negative terminals of the battery charging port to the wiring terminals in the explosion-proof cabinet 5.

[0124] S3, connect the charger to the power input on the panel;

[0125] S4, activate AC power supply 31 via communication;

[0126] S5, by attracting K4 through the acquisition card, causes the charger to be mistakenly connected to the battery in the explosion-proof cabinet 5;

[0127] S6, continue for a period of time and observe the changes in the charger's output current.

[0128] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated testing device for electric bicycle chargers, comprising: The system comprises a main control unit (1) for controlling the entire testing process, an I / O control unit (2) for signal conversion and isolation, a control cabinet (3) for performing the testing function, and a wiring panel (4) for connecting the charger under test; the main control unit (1) is electrically connected to the I / O control unit (2); and is characterized by further comprising diodes and several contactors; wherein: The control cabinet (3) is equipped with an AC power supply (31), a regulated power supply (32), an electronic load (33), an AC voltage sensor (34), a DC voltage sensor (36), and a current sensor (35); The wiring panel (4) includes an AC power strip (41), a new national standard 2+2 socket (42), a new national standard 2+4 socket (43), a universal socket (44), and a short-circuit failure connector (45); The AC power supply (31) is electrically connected to the AC power socket (41) of the wiring panel (4) via contactor No. 6; the regulated power supply (32) is connected to contactor No. 3 via diode and contactor No. 2; the electronic load (33) is connected to contactor No. 3 via contactor No. 1; the contactor No. 3 is electrically connected to the three sockets of the wiring panel (4) via the current sensor (35) and the DC voltage sensor (36); the AC power supply (31), the regulated power supply (32), and the electronic load (33) are electrically connected to the main control unit (1) via the 485 communication bus.

2. The integrated electric bicycle charger testing device according to claim 1, characterized in that, The main control unit (1) includes a PC (11) for controlling the detection process and a data acquisition card (12) for acquiring analog signals and controlling the opening and closing state of the contactor.

3. The integrated electric bicycle charger testing device according to claim 1, characterized in that, The IO control section (2) includes an optocoupler isolation module (21), several intermediate relays (22) and several control coils (23).

4. The integrated electric bicycle charger testing device according to claim 1, characterized in that, It also includes an explosion-proof cabinet (5) for safety protection, the explosion-proof cabinet (5) including a positive terminal clamp and a negative terminal clamp for connecting the rechargeable battery.

5. The integrated electric bicycle charger testing device according to claim 1, characterized in that, The voltage sensor, DC voltage sensor (36), and current sensor (35) are all Hall sensors.

6. The integrated electric bicycle charger testing device according to claim 1, characterized in that, The data acquisition card (12) of the main control part (1) is connected to the input terminal of the optocoupler isolation module (21) via a data line. The output terminal of the optocoupler isolation module (21) is connected to 6 intermediate relays (22), and each intermediate relay (22) is connected to a control coil (23).

7. The integrated electric bicycle charger testing device according to claim 1, characterized in that, The live wire and neutral wire input terminals of the AC power supply (31) are connected to the AC power socket (41) on the wiring panel (4) via contactor No. 6; the AC voltage sensor (34) is connected in parallel between contactor No. 6 and AC power socket (41), with its positive and negative terminals connected to the live wire side and the neutral wire side, respectively.

8. The integrated electric bicycle charger testing device according to claim 1, characterized in that, The regulated power supply (32) is connected to terminal 1 of contactor 3 via diode V1 and contactor 2; The electronic load (33) is also connected to the 1st terminal of the 3rd contactor via the 1st contactor; the 2nd terminal of the 3rd contactor is connected to node 1 via the current sensor (35) and the DC voltage sensor (36), and node 1 is connected to the positive terminals of the three sockets on the wiring panel (4); the regulated power supply (32) branch and the electronic load (33) branch are connected in parallel and share the current sensor (35) and the DC voltage sensor (36).

9. The integrated electric bicycle charger testing device according to claim 8, characterized in that, The negative terminal of the regulated power supply (32) is connected to terminal 3 of the third contactor via contactor number 2; the negative terminal of the electronic load (33) is also connected to terminal 3 of the third contactor via contactor number 1; terminal 4 of the third contactor is connected to node 2 via DC voltage sensor (36), and node 2 is connected to the negative terminals of the three sockets on the wiring panel (4); the negative branches of the regulated power supply (32) and the electronic load (33) are connected in parallel and share the DC voltage sensor (36).

10. The integrated electric bicycle charger testing device according to claim 4, characterized in that, The positive terminal of the explosion-proof cabinet (5) is connected in parallel between the 2nd terminal of the No. 3 contactor and the current sensor (35), and the negative terminal of the explosion-proof cabinet (5) is connected in parallel between the common negative terminal and the negative terminal of the DC voltage sensor (36).

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