Charger testing device

Abstract

The utility model discloses a charger testing device, which comprises a power management module, a driving module, a detection module, a communication module and an upper computer, the power management module is connected with the driving module, the detection module, the charger to be tested and the AC power supply. The upper computer is connected with the driving module; the charger to be tested is connected with the driving module and the detection module. The detection module is connected with the upper computer through the communication module; the upper computer is used for sending a working signal, the driving module generates a driving signal used for driving a to-be-tested charger to charge a storage battery according to the working signal, and the detection module receives the working signal through the communication module and generates a detection signal used for detecting operation parameters of the to-be-tested charger according to the working signal. And the communication module feeds back the operation parameters to the upper computer. According to the device, off-line testing can be carried out on the charger without loading the charger, the testing efficiency of the charger is improved, and potential safety hazards of personnel and the charger are reduced.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, and in particular to a charger testing device. Background Technology

[0002] As urban rail transit trains have been in operation for a long time, the failure rate of high-power modules will increase. Among them, the charger, as the core processing module of the subway train auxiliary system, can be applied to various train models. It is mainly responsible for converting the DC 1500V high voltage on the train into DC 110V output voltage through "DC-AC-DC" inverter to power the low-voltage equipment on the train, and also to charge the train's battery. The Siemens charger module adopts a 3-level 6-pulse drive control method, and the board design is complex.

[0003] Under the current conditions, to complete the full-function testing of the auxiliary system charger, both pre-repair testing and post-repair acceptance testing require installing the charger on the train for testing. Since the charger supplier does not provide the necessary testing equipment, offline functional testing is impossible. Furthermore, the charger's large size necessitates four people working together to lift and simultaneously move it horizontally across the train during installation, which is extremely inconvenient and poses safety hazards to both personnel and the charger.

[0004] Therefore, there is an urgent need for an offline testing device for chargers that can be tested without the charger being installed on a vehicle, thereby improving the testing efficiency of chargers and reducing safety hazards to personnel and chargers. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a charger testing device that can test the charger without installing it on a vehicle, thereby improving the testing efficiency of the charger and reducing safety hazards to personnel and the charger.

[0006] To solve the above problems, this utility model is implemented according to the following solution:

[0007] A charger testing device is provided, comprising: a power management module, a drive module, a detection module, a communication module, and a host computer;

[0008] The power management module is connected to the drive module, the detection module, the charger under test, and the AC power supply; the host computer is connected to the drive module; the charger under test is connected to the drive module and the detection module; the detection module is connected to the host computer through the communication module.

[0009] The host computer is used to send working signals. The drive module generates a drive signal to drive the charger under test to charge the battery based on the working signals. The detection module receives the working signals through the communication module and generates a detection signal to detect the operating parameters of the charger under test based on the working signals. The communication module feeds back the operating parameters to the host computer.

[0010] Compared with the prior art, the beneficial effects of the charger testing device of this utility model are as follows: the drive module realizes the driving of the charger, and the detection module realizes the detection of the operating parameters of the charger. The device can perform offline testing of the charger without installing the charger in the vehicle, thereby improving the testing efficiency of the charger and reducing safety hazards to personnel and the charger.

[0011] Optionally, the power management module includes a first power supply, a second power supply, and a third power supply;

[0012] The AC power supply is connected to the first power supply, the second power supply, and the third power supply; the first power supply is connected to the drive module; the second power supply is connected to the charger under test; and the third power supply is connected to the detection module.

[0013] Optionally, the drive module includes a charger drive circuit and a drive signal control unit;

[0014] The charger drive circuit is connected to the first power supply, the drive signal control unit, and the charger under test; the drive signal control unit is connected to the host computer.

[0015] The drive signal control unit generates the drive signal according to the working signal, and the charger drive circuit drives the charger under test to run according to the drive signal.

[0016] Optionally, the drive signal control unit includes a drive signal generation circuit and a main control chip;

[0017] The drive signal generation circuit is connected to the charger drive circuit and the main control chip; the main control chip is connected to the host computer.

[0018] Optionally, the main control chip is a microcontroller of model STM32F407.

[0019] Optionally, the detection module includes a control board circuit and an electrical parameter detection unit;

[0020] The charger under test is connected to the electrical parameter detection unit, the control board circuit, and the communication module; the control board circuit is connected to the third power supply.

[0021] The control board circuit receives the working signal through the communication module and generates a detection signal for detecting the electrical parameters of the charger under test during operation based on the working signal. The electrical parameter detection unit detects the electrical parameters of the charger under test during operation based on the detection signal. The electrical parameters are then fed back to the host computer through the control board circuit and the communication module in sequence.

[0022] Optionally, the control board circuit is connected to the charger under test;

[0023] The control board circuit is also used to receive the detection signal of the battery temperature when the charger under test is running according to the working signal, and the control board circuit feeds back the battery temperature to the host computer through the communication module.

[0024] Optionally, the electrical parameter detection unit includes a voltage detection circuit and a current detection circuit;

[0025] The voltage detection circuit is connected to the charger under test and the control board circuit; the current detection circuit is connected to the charger under test and the control board circuit.

[0026] Optionally, the communication module includes a CAN communication circuit; the CAN communication circuit is connected to the control board circuit and the host computer. Attached Figure Description

[0027] Figure 1 This is a structural block diagram of the testing device of this utility model;

[0028] Figure 2 The circuit principle of the power management module of this utility model Figure 1 ;

[0029] Figure 3 The circuit principle of the power management module of this utility model Figure 2 ;

[0030] Figure 4 This is a schematic diagram of the drive signal control unit of this utility model;

[0031] Figure 5 This is a schematic diagram of the voltage detection circuit of this utility model;

[0032] Figure 6 This is a schematic diagram of the current detection circuit of this utility model;

[0033] Figure 7 This is a schematic diagram of the CAN communication circuit of this utility model.

[0034] The attached diagram shows the following labels: 1. Power management module; 2. Driver module; 201. Main control chip; 202. Driver signal generation circuit; 3. Detection module; 301. Control board circuit; 302. Voltage detection circuit; 303. Current detection circuit; 4. Communication module; 401. CAN communication circuit; 5. Host computer; 6. Charger under test. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] See Figure 1 As shown, a charger testing device of this utility model includes: a power management module 1, a drive module 2, a detection module 3, a communication module 4, and a host computer 5; the power management module 1 is connected to the drive module 2, the detection module 3, the charger under test, and an AC220V-L / AC220V-N power supply; the host computer 5 is connected to the drive module 2; the charger under test 6 is connected to the drive module 2 and the detection module 3; the detection module 3 is connected to the host computer 5 through the communication module 4.

[0038] See Figure 2-3 The diagram shown is a circuit schematic of the power management module 1. The power management module 1 includes a first power supply of 24 / 5V, a second power supply of 700V, and a third power supply of 110V. The AC power supply AC220V-L / AC220V-N is connected to the first power supply of 24 / 5V, the second power supply of 700V, and the third power supply of 110V. The first power supply of 24 / 5V is connected to the drive module 2. The second power supply of 700V is connected to the charger 6 under test. The third power supply of 110V is connected to the detection module 3.

[0039] The host computer 5 is used to send working signals. These working signals are generated by the tester after connecting the test device to the charger under test. The tester selects the train model and driving parameters of the charger under test 6 on the host computer 5. The train model includes trains applicable to Siemens auxiliary systems. Different test modes are used for different train models. The driving parameters include, but are not limited to, high voltage status, frequency, duty cycle, etc. The host computer 5 generates working signals based on the received train model and driving parameters.

[0040] The charger under test 6 includes an IGBT control circuit connected to the battery, which is used to charge the battery; the drive module 2 generates a drive signal for driving the charger under test 6 to charge the battery according to the working signal. When the charger under test 6 receives the drive signal, it charges the battery through the IGBT control circuit, so that the drive module 2 can drive the charger under test 6 without installing the charger in the vehicle.

[0041] The charger under test 6 also includes a temperature sensor for testing the battery temperature during charging. The detection module 3 receives the working signal through the communication module 4 and generates a detection signal for detecting the operating parameters of the charger under test 6 based on the working signal. The communication module 4 feeds back the operating parameters to the host computer 5 so that the tester can view the test results of the charger under test 6 through the host computer 5. The operating parameters include the charging voltage, charging current and battery temperature when the charger under test 6 charges the battery.

[0042] Drive module 2 includes a charger drive circuit and a drive signal control unit; the charger drive circuit is connected to the first power supply 24 / 5V, the drive signal control unit, and the charger under test 6; the drive signal control unit is connected to the host computer 5; the drive signal control unit generates a drive signal according to the working signal, and the charger drive circuit drives the charger under test 6 to run according to the drive signal; see also Figure 4 As shown, the drive signal control unit includes a drive signal generation circuit 202 and a main control chip 201. The drive signal generation circuit 202 is connected to the charger drive circuit and the main control chip 201. The main control chip 201 is connected to the host computer 5, and the main control chip 201 is a microcontroller of model STM32F407. When the main control chip 201 receives the working signal sent by the host computer 5, it identifies the working signal and generates a microcontroller signal to be received by the drive signal generation circuit 202. The drive signal generation circuit 202 converts the microcontroller signal into a dual-channel pulse drive signal of a certain frequency. The dual-channel pulse drive signal is used to drive the IGBT control circuit of the charger under test 6 to charge the battery.

[0043] The detection module 3 includes a control board circuit 301 and an electrical parameter detection unit; the charger under test 6 is connected to the electrical parameter detection unit, the control board circuit 301, and the communication module 4; the control board circuit 301 is connected to a third power supply 110V; the control board circuit 301 receives the working signal through the communication module and generates a detection signal for detecting the electrical parameters of the charger under test 6 during operation based on the working signal; the electrical parameter detection unit detects the electrical parameters of the charger under test 6 during operation based on the detection signal; the electrical parameters are fed back to the host computer 5 through the control board circuit 301 and the communication module 4 in sequence; the electrical parameters include the charging voltage and charging current when the battery is charging.

[0044] The electrical parameter detection unit includes a voltage detection circuit 302 and a current detection circuit 303; see also Figure 5 The diagram shows a schematic of the voltage detection circuit 302, which is connected to the charger under test 6 and the control board circuit 301; see also... Figure 6 The diagram shows a schematic of the current detection circuit 303, which is connected to the charger under test 6 and the control board circuit 301.

[0045] The control board circuit 301 is connected to the charger under test 6. The control board circuit 301 is also used to receive the detection signal of the battery temperature when the charger under test 6 is running according to the working signal. The control board circuit 301 feeds back the battery temperature to the host computer 5 through the communication module 4. The temperature sensor in the charger under test 6 is used to test the battery temperature during charging. After the drive module 2 drives the charger under test 6 to charge, the temperature sensor will collect the battery temperature in real time so that the control board can obtain the battery temperature and feed it back to the host computer 5 through the communication module 4.

[0046] Communication module 4 includes CAN communication circuit 401; see [link / reference] Figure 7 The diagram shows a schematic of the CAN communication circuit 401. The CAN communication circuit 401 is connected to the control board circuit 301 and the host computer 5. The CAN communication circuit 401 converts the charging voltage, charging current, and battery temperature (operating parameters) received by the control board circuit 301 into communication signals that can be received by the host computer 5, so that the tester can view the test results including the charging voltage, charging current, and battery temperature (operating parameters) through the host computer 5.

[0047] This invention uses a drive module 2 to drive the charger 6 under test, enabling battery charging without installing the charger in a vehicle. A detection module 3 then monitors the charging voltage, charging current, and battery temperature (operating parameters) during battery charging. The communication module 4 transmits these parameters to a host computer 5, allowing testers to view the test results on the charger 6. This testing device enables offline testing of the charger, thereby improving testing efficiency, saving manpower, and reducing safety hazards for personnel and the charger.

[0048] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A charger testing device, characterized in that, include: Power management module, driver module, detection module, communication module and host computer; The power management module is connected to the drive module, the detection module, the charger under test, and the AC power supply; the host computer is connected to the drive module; the charger under test is connected to the drive module and the detection module; the detection module is connected to the host computer through the communication module. The host computer is used to send working signals. The drive module generates a drive signal to drive the charger under test to charge the battery based on the working signals. The detection module receives the working signals through the communication module and generates a detection signal to detect the operating parameters of the charger under test based on the working signals. The communication module feeds back the operating parameters to the host computer.

2. The charger testing device according to claim 1, characterized in that, The power management module includes a first power supply, a second power supply, and a third power supply; The AC power supply is connected to the first power supply, the second power supply, and the third power supply; the first power supply is connected to the drive module; the second power supply is connected to the charger under test; and the third power supply is connected to the detection module.

3. The charger testing device according to claim 2, characterized in that, The drive module includes a charger drive circuit and a drive signal control unit; The charger drive circuit is connected to the first power supply, the drive signal control unit, and the charger under test; the drive signal control unit is connected to the host computer. The drive signal control unit generates the drive signal according to the working signal, and the charger drive circuit drives the charger under test to run according to the drive signal.

4. The charger testing device according to claim 3, characterized in that, The drive signal control unit includes a drive signal generation circuit and a main control chip; The drive signal generation circuit is connected to the charger drive circuit and the main control chip; the main control chip is connected to the host computer.

5. A charger testing device according to claim 4, characterized in that, The main control chip is an STM32F407 microcontroller.

6. The charger testing device according to claim 2, characterized in that, The detection module includes a control board circuit and an electrical parameter detection unit; The charger under test is connected to the electrical parameter detection unit, the control board circuit, and the communication module; the control board circuit is connected to the third power supply. The control board circuit receives the working signal through the communication module and generates a detection signal for detecting the electrical parameters of the charger under test during operation based on the working signal. The electrical parameter detection unit detects the electrical parameters of the charger under test during operation based on the detection signal. The electrical parameters are then fed back to the host computer through the control board circuit and the communication module in sequence.

7. A charger testing device according to claim 6, characterized in that, The control board circuit is connected to the charger under test; The control board circuit is also used to receive the detection signal of the battery temperature when the charger under test is running according to the working signal, and the control board circuit feeds back the battery temperature to the host computer through the communication module.

8. A charger testing device according to claim 7, characterized in that, The electrical parameter detection unit includes a voltage detection circuit and a current detection circuit; The voltage detection circuit is connected to the charger under test and the control board circuit; the current detection circuit is connected to the charger under test and the control board circuit.

9. A charger testing device according to claim 7, characterized in that, The communication module includes a CAN communication circuit; the CAN communication circuit is connected to the control board circuit and the host computer.

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