Test method for 24V-to-12V adaptive module of truck

Abstract

The invention discloses a test method for a 24V-to-12V adaptive module of a truck, and the method comprises the following operation steps: S1, testing equipment configuration; s2, setting a test environment; s3, test connection and parameter setting; s4, testing is started, a control unit is started, the testing process is started, and parameter change conditions of time, environmental conditions, input voltage, output voltage, current, waveform and temperature are monitored in real time; s41, function testing is carried out; s42, performing fault detection and recovery test, including overcurrent fault test, over-temperature fault test, Vi n detection test and DCout output voltage detection test; s43, a load channel switching test is carried out; s44, reliability testing is carried out; s5, ending the test, closing the control unit, ending the test process, and disconnecting the input power supply, the load equipment and the 24V-to-12V adaptive module of the truck; and S6, test recording and analysis. The system has the advantages of high efficiency, high precision, comprehensive test, strong flexibility, high cost benefit, easy maintenance, high reliability and strong traceability.

Description

Technical Field

[0001] The present invention relates to the field of testing of truck adaptive modules, and particularly to a testing method for a 24V to 12V adaptive module of a truck. Background Art

[0002] With the continuous progress of automotive electronic technology, there are more and more electronic devices on trucks, and the requirements for power supplies by these devices are also becoming more and more diverse. In a truck electrical system, a 24V to 12V adaptive module plays a crucial role. It can convert the 24V power supply on the truck into a 12V power supply to provide a stable voltage input for various in-vehicle electronic devices. However, due to the complexity of the truck operating environment and the diversity of in-vehicle electronic devices, high requirements are imposed on the performance and stability of the 24V to 12V adaptive module.

[0003] However, traditional testing methods rely on manual operations, the testing process is cumbersome, the testing efficiency is low, the testing accuracy is limited, maintenance is difficult, the cost is high, the cost-effectiveness is low, the testing range is limited, only basic performance indicators can be concerned, the testing method is fixed, lacking flexibility, and affected by human factors and the accuracy of testing equipment, the reliability of traditional testing methods is relatively low. Manual test data may lack a unified management and storage method, resulting in difficulties in subsequent analysis and improvement. Summary of the Invention

[0004] The purpose of the present invention is to provide a testing method for a 24V to 12V adaptive module of a truck, which has the advantages of high efficiency, high precision, comprehensive testing, strong flexibility, high cost-benefit, easy maintenance, high reliability, and strong traceability.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions:

[0006] A testing method for a 24V to 12V adaptive module of a truck includes the following operating steps.

[0007] S1, test equipment configuration, including a battery simulator, an oscilloscope, a load device, a temperature sensor, a digital multimeter, a control unit, and a data recording unit;

[0008] S2, test environment setting, in a laboratory environment with controllable temperature and humidity, provide a stable 24V DC power supply as input and connect a load device to simulate the actual use situation of the truck electrical system;

[0009] S3, test connection and parameter setting, connect the battery simulator to the input end of the 24V to 12V adaptive module of the truck, and connect the load device to the output end of the 24V to 12V adaptive module of the truck;

[0010] S4. Start the test, activate the control unit, begin the test process, and monitor in real time the parameter changes of time, environmental conditions, input voltage, output voltage, current, waveform, and temperature;

[0011] S41. Function test;

[0012] S42. Fault detection and recovery test, including overcurrent fault test, overtemperature fault test, Vin detection test, and DCout output voltage detection test;

[0013] S43. Load channel switching test;

[0014] S44. Reliability test;

[0015] S5. End the test, turn off the control unit, end the test process, and disconnect the input power supply, load device, and the 24V to 12V adaptive module of the truck;

[0016] S6. Test record and analysis.

[0017] The preferred solutions are as follows:

[0018] Preferably: the input Vin voltage range of the battery simulator is 9V - 30V; the output voltage range of the load device is Vin / 2 ± 10%.

[0019] Preferably: in step S41, during the function test,

[0020] Under normal load conditions, measure the input voltage and output voltage to ensure that the output voltage is stable within the range of Vin / 2 ± 10%, observe the voltage and current waveforms on the oscilloscope to ensure that the waveforms are smooth without abnormal fluctuations or noise.

[0021] Preferably: in step S42, during the fault detection and recovery test,

[0022] For the overcurrent fault test, when DCout undergoes an up and down jump and lasts for about 5s, the power chip enable pin of the 24V to 12V adaptive module of the truck shuts off the DC output and closes the load path, record the fault type and number of times, and after 1 minute, the power chip enable pin of the 24V to 12V adaptive module of the truck re - opens the DC output;

[0023] For the overtemperature fault test, when the temperature exceeds 70°C and lasts for 10s, the power chip enable pin of the 24V to 12V adaptive module of the truck shuts off the DC output and closes the load path, record the fault type and number of times, and when the temperature is less than 60°C and lasts for 10s, the power chip enable pin of the 24V to 12V adaptive module of the truck re - opens the DC output;

[0024] Vin detection test. When the input voltage Vin is not within the range of 9V - 30V and is maintained for 30s, the power chip enable pin of the 24V - to - 12V adaptive module of the truck turns off the DC output enable and closes the load path, and records the type and number of faults; when the input voltage Vin is within the range of 9V - 30V and is maintained for 10s, the power chip enable pin of the 24V - to - 12V adaptive module of the truck re - opens the DC output.

[0025] Preferably: In step S43, during the load channel switching test;

[0026] When DCout > (Vout + 1V) and the total voltage Vin is less than 27.5V, the load channels are all disconnected and switched to the 300R channel;

[0027] When Vin <= 28V and DCout > (Vout + 1V), switch from the 300R channel to the 50R channel;

[0028] When Vin > 28V, switch from the 50R channel to the 300R channel;

[0029] When Vin > 28V or DCout = (Vout ± 10%), switch from the 300R channel to the state where the load channels are all disconnected.

[0030] Preferably: In step S44, during the reliability test,

[0031] Conduct a long - time continuous operation test to evaluate the reliability and durability of the 24V - to - 12V adaptive module of the truck;

[0032] Conduct multiple power - on and power - off tests to check the performance stability of the 24V - to - 12V adaptive module of the truck under frequent start - up and shutdown conditions;

[0033] Conduct tests under extreme environmental conditions of high temperature, low temperature, and high humidity to evaluate the environmental adaptability of the 24V - to - 12V adaptive module of the truck.

[0034] Preferably: In step S6, during the test record and analysis,

[0035] Record the time, environmental conditions, input voltage, output voltage, current, waveform, and temperature parameters of each test;

[0036] Record the abnormal phenomena and fault conditions that occur during the test process;

[0037] Conduct statistical analysis on the test data to evaluate whether the performance indicators of the module meet the requirements;

[0038] According to the abnormal phenomena and fault conditions, analyze the reasons and propose improvement measures.

[0039] Preferably, the control unit is used to control the start, stop, and parameter setting of the test process, and it further includes a fault detection module and a load switching module;

[0040] The fault detection module is used to detect overcurrent, over-temperature, abnormal Vin, and abnormal DCout output voltage;

[0041] The load switching module is used to automatically switch the load channel according to preset conditions.

[0042] Preferably, the data recording unit includes a data analysis module and a report generation module

[0043] The data analysis module is used to statistically analyze the test data and evaluate the performance indicators of the 24V to 12V adaptive module of the truck;

[0044] The report generation module is used to generate a test report and put forward improvement suggestions.

[0045] In summary, the present invention has the following beneficial effects:

[0046] 1. Through the setting of the test equipment, it can achieve the effects of efficient testing, significantly improving the test efficiency, shortening the test cycle, high-precision measurement, and ensuring the accuracy and reliability of the test results;

[0047] 2. The test method for the 24V to 12V adaptive module of the truck covers the testing of multiple aspects such as the input voltage range, output voltage accuracy, output current capacity, conversion efficiency, protection function, and stability and reliability. It has the characteristics of strong flexibility and can be customized and adjusted according to actual needs to meet the test requirements of different application scenarios;

[0048] 3. It has high cost-effectiveness. The test equipment and test method can significantly reduce the long-term test cost, improve the test efficiency, and the test equipment usually has the characteristics of easy maintenance and upgrade, which can reduce the subsequent maintenance cost;

[0049] 4. It has high reliability. The test equipment and test method can ensure the stability and consistency of the test results and improve the reliability of the test results; moreover, it has strong traceability. The test data and results can be conveniently stored and traced, which is convenient for subsequent analysis and improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is the framework flow chart of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0051] The following further describes the present invention in detail with reference to the accompanying drawings.

[0052] The test method for the 24V to 12V adaptive module of the truck, as Figure 1 shown, includes the following operating steps:

[0053] S1, Test equipment configuration, including a battery simulator, an oscilloscope, a load device, a temperature sensor, a digital multimeter, a control unit, and a data recording unit;

[0054] S2, Test environment setup, in a laboratory environment with controllable temperature and humidity, provide a stable 24V DC power supply as the input, and connect a load device to simulate the actual usage of the truck electrical system;

[0055] S3, Test connection and parameter setting, connect the battery simulator to the input end of the truck 24V to 12V adaptive module, and connect the load device to the output end of the truck 24V to 12V adaptive module;

[0056] S4, Start the test, start the control unit, start the test process, and monitor the parameter changes of time, environmental conditions, input voltage, output voltage, current, waveform, and temperature in real time;

[0057] S41, Function test, under normal load conditions, measure the input voltage and output voltage to ensure that the output voltage is stable within the range of Vin / 2 ± 10%, observe the voltage and current waveforms on the oscilloscope to ensure that the waveforms are smooth without abnormal fluctuations or noise;

[0058] S42, Fault detection and recovery test, including overcurrent fault test, overtemperature fault test, Vin detection test, and DCout output voltage detection test;

[0059] Overcurrent fault test, when DCout undergoes an up and down jump and lasts for about 5s, the power chip enable pin of the truck 24V to 12V adaptive module shuts off the DC output and closes the load path, record the fault type and number of times, and after 1 minute, the power chip enable pin of the truck 24V to 12V adaptive module reopens the DC output;

[0060] Overtemperature fault test, when the temperature exceeds 70°C and lasts for 10s, the power chip enable pin of the truck 24V to 12V adaptive module shuts off the DC output and closes the load path, record the fault type and number of times, when the temperature is less than 60°C and lasts for 10s, the power chip enable pin of the truck 24V to 12V adaptive module reopens the DC output;

[0061] Vin detection test, when the input voltage Vin is not within the range of 9V - 30V and lasts for 30s, the power chip enable pin of the truck 24V to 12V adaptive module shuts off the DC output enable and closes the load path, record the fault type and number of times; when the input voltage Vin is within the range of 9V - 30V and lasts for 10s, the power chip enable pin of the truck 24V to 12V adaptive module reopens the DC output;

[0062] S43, Load channel switching test;

[0063] When DCout > (Vout + 1V) and the total voltage Vin is less than 27.5V, all load channels are disconnected and switched to the 300R channel;

[0064] When Vin <= 28V and DCout > (Vout + 1V), switch from the 300R channel to the 50R channel;

[0065] When Vin > 28V, switch from the 50R channel to the 300R channel;

[0066] When Vin > 28V or DCout = (Vout ± 10%), switch from the 300R channel to all load channels being disconnected;

[0067] S44, Reliability test;

[0068] Conduct a long - time continuous operation test to evaluate the reliability and durability of the truck 24V - to - 12V adaptive module;

[0069] Conduct multiple power - on and power - off tests to check the performance stability of the truck 24V - to - 12V adaptive module under frequent start - up and shutdown conditions;

[0070] Conduct tests under extreme environmental conditions of high temperature, low temperature, and high humidity to evaluate the environmental adaptability of the truck 24V - to - 12V adaptive module;

[0071] S5, Test end. Shut down the control unit, end the test process, and disconnect the input power supply, load device, and the connection between the truck 24V - to - 12V adaptive module;

[0072] S6, Test recording and analysis;

[0073] Record the time, environmental conditions, input voltage, output voltage, current, waveform, and temperature parameters of each test;

[0074] Record the abnormal phenomena and fault conditions that occur during the test process;

[0075] Conduct statistical analysis on the test data to evaluate whether the performance indicators of the module meet the requirements;

[0076] According to the abnormal phenomena and fault conditions, analyze the reasons and propose improvement measures.

[0077] Among them,

[0078] The battery simulator is used to simulate different types of battery inputs to evaluate the performance of the truck 24V - to - 12V adaptive module under different battery conditions. The input Vin voltage range of the battery simulator is 9V - 30V;

[0079] The digital multimeter is used to measure input voltage, output voltage and current parameters;

[0080] The oscilloscope is used to observe voltage and current waveforms and detect abnormal fluctuations or noises;

[0081] The load device is used to simulate the load of the truck electrical system. The output voltage range of the load device is Vin / 2 ± 10%, and the performance of the 24V-to-12V adaptive module of the truck is tested under different load conditions;

[0082] The temperature sensor is used to monitor the temperature change during the operation of the module and evaluate the heat dissipation performance of the 24V-to-12V adaptive module of the truck.

[0083] The control unit is used to control the start, stop and parameter setting of the test process. It also includes a fault detection module and a load switching module;

[0084] The fault detection module is used to detect overcurrent, overheating, abnormal Vin and abnormal DCout output voltage;

[0085] The load switching module is used to automatically switch the load channel according to preset conditions.

[0086] The data recording unit includes a data analysis module and a report generation module

[0087] The data analysis module is used to statistically analyze the test data and evaluate the performance indicators of the 24V-to-12V adaptive module of the truck;

[0088] The report generation module is used to generate a test report and put forward improvement suggestions.

[0089] This specific embodiment is only an explanation of the present invention and does not limit the present invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. Test method for 24V to 12V adaptive module of truck, characterized in that: It includes the following operation steps: S1. Test equipment configuration, including a battery simulator, an oscilloscope, a load device, a temperature sensor, a digital multimeter, a control unit, and a data recording unit; S2. Test environment setting. In a laboratory environment with controllable temperature and humidity, provide a stable 24V DC power supply as the input, and connect the load device to simulate the actual usage of the truck electrical system; S3. Test connection and parameter setting. Connect the battery simulator to the input end of the truck 24V-to-12V adaptive module, and connect the load device to the output end of the truck 24V-to-12V adaptive module; S4. Start the test. Start the control unit to start the test process, and real-time monitor the parameter changes of time, environmental conditions, input voltage, output voltage, current, waveform, and temperature; S41. Function test; S42. Fault detection and recovery test, including overcurrent fault test, overtemperature fault test, Vin detection test, and DCout output voltage detection test; S43. Load channel switching test; S44. Reliability test; S5. End the test. Turn off the control unit to end the test process, and disconnect the input power supply, the load device, and the connection of the truck 24V-to-12V adaptive module; S6. Test record and analysis.

2. The test method of the 24V to 12V adaptive module for a truck according to claim 1, characterized in that: The input Vin voltage range of the battery simulator is 9V - 30V; the output voltage range of the load device is Vin / 2 ± 10%.

3. The test method for the 24V to 12V adaptive module of the truck according to claim 2, characterized in that: In step S41, during the function test, Under normal load conditions, measure the input voltage and output voltage to ensure that the output voltage is stable within the range of Vin / 2 ± 10%, and observe the voltage and current waveforms on the oscilloscope to ensure that the waveforms are smooth without abnormal fluctuations or noise.

4. The test method of the 24V to 12V adaptive module for a truck according to claim 3, characterized in that: In step S42, during the fault detection and recovery test, Overcurrent fault test. When DCout undergoes an up and down jump and lasts for about 5s, the power chip enable pin of the truck 24V-to-12V adaptive module shuts off the DC output and closes the load path, record the type and number of faults, and after 1 minute, the power chip enable pin of the truck 24V-to-12V adaptive module reopens the DC output; Overtemperature fault test. When the temperature exceeds 70°C and lasts for 10s, the power chip enable pin of the truck 24V-to-12V adaptive module shuts off the DC output and closes the load path, record the type and number of faults, and when the temperature is less than 60°C and lasts for 10s, the power chip enable pin of the truck 24V-to-12V adaptive module reopens the DC output; Vin detection test. When the input voltage Vin is not within the range of 9V - 30V and lasts for 30s, the power chip enable pin of the truck 24V-to-12V adaptive module shuts off the DC output enable and closes the load path, record the type and number of faults; when the input voltage Vin is within the range of 9V - 30V and lasts for 10s, the power chip enable pin of the truck 24V-to-12V adaptive module reopens the DC output.

5. The test method of the 24V to 12V adaptive module for trucks according to claim 4, characterized in that: In step S43, during the load channel switching test; When DCout > (Vout + 1V) and the total voltage Vin is less than 27.5V, all load channels are disconnected and switched to the 300R channel; When Vin <= 28V and DCout > (Vout + 1V), switch from the 300R channel to the 50R channel; When Vin > 28V, switch from the 50R channel to the 300R channel; When Vin > 28V or DCout = (Vout ± 10%), switch from the 300R channel to the fully-disconnected load channel.

6. The test method of the 24V to 12V adaptive module for a truck according to claim 5, characterized in that: Step S44, in the reliability test Conduct a long-term continuous operation test to evaluate the reliability and durability of the 24V-to-12V adaptive module for trucks; Conduct multiple power-on and power-off tests to check the performance stability of the 24V-to-12V adaptive module for trucks under frequent startup and shutdown conditions; Conduct tests under extreme environmental conditions of high temperature, low temperature, and high humidity to evaluate the environmental adaptability of the 24V-to-12V adaptive module for trucks.

7. The test method for the 24V to 12V adaptive module of the truck according to claim 6, characterized in that: Step S6, in the test recording and analysis Record the time, environmental conditions, input voltage, output voltage, current, waveform, and temperature parameters of each test; Record the abnormal phenomena and fault conditions that occur during the test; Conduct statistical analysis on the test data to evaluate whether the performance indicators of the module meet the requirements; Analyze the causes and propose improvement measures based on the abnormal phenomena and fault conditions.

8. The test method of the 24V to 12V adaptive module for the truck according to claim 7, characterized in that: The control unit is used to control the start, stop, and parameter setting of the test process, and it also includes a fault detection module and a load switching module; The fault detection module is used to detect overcurrent, over-temperature, abnormal Vin, and abnormal DCout output voltage; The load switching module is used to automatically switch the load channel according to preset conditions.

9. The test method for the 24V to 12V adaptive module of the truck according to claim 8, characterized in that: The data recording unit includes a data analysis module and a report generation module The data analysis module is used to conduct statistical analysis on the test data to evaluate the performance indicators of the 24V-to-12V adaptive module for trucks; The report generation module is used to generate a test report and propose improvement suggestions.

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