CN113567876A - Power supply testing method, device and equipment - Google Patents
Power supply testing method, device and equipment Download PDFInfo
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- CN113567876A CN113567876A CN202010349810.3A CN202010349810A CN113567876A CN 113567876 A CN113567876 A CN 113567876A CN 202010349810 A CN202010349810 A CN 202010349810A CN 113567876 A CN113567876 A CN 113567876A
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- 238000012360 testing method Methods 0.000 title claims abstract description 221
- 238000004088 simulation Methods 0.000 claims abstract description 32
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 238000005315 distribution function Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000000342 Monte Carlo simulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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Abstract
The invention provides a power supply testing method, device and equipment, and relates to the field of testing. The power supply testing method comprises the following steps: simulating a target value of a target test voltage to obtain a test voltage value of the target test voltage; the target test voltage comprises at least one of charging pile input voltage, power battery output high voltage and storage battery output low voltage of a power source to be tested; and testing the power supply to be tested according to the test voltage value. By simulating the target value of the target test voltage, the test voltage is ensured to be selected by taking a common working condition as a center for simulation, the simulation times can be flexibly determined according to the actual working condition, and the number of test sampling points is determined, so that the power distribution matching requirement of the power supply to be tested is met.
Description
Technical Field
The invention relates to the field of testing, in particular to a power supply testing method, device and equipment.
Background
The test method of the existing vehicle-mounted power supply integrated product is to take the highest point, rated point and lowest point of input and output voltage as test conditions respectively to test single point and single working condition, but in the actual application process of the electric vehicle, the test method is multipoint and multi-working condition, the working time under some working conditions is longer, the test of single point and single working condition is difficult to cover all working conditions and simulate the actual application scene, the abnormal working condition can occur in the actual application, and the test can not be carried out during the test.
Disclosure of Invention
The embodiment of the invention provides a power supply testing method, a power supply testing device and power supply testing equipment, which are used for solving the problem of how to improve the coverage of testing voltage.
In order to solve the above technical problem, an embodiment of the present invention provides a power supply testing method, where the method includes:
simulating a target value of a target test voltage to obtain a test voltage value of the target test voltage; the target test voltage comprises at least one of charging pile input voltage, power battery output high voltage and storage battery output low voltage of a power source to be tested;
and testing the power supply to be tested according to the test voltage value.
Further, the simulating the target value of the target test voltage to obtain the test voltage value of the target test voltage includes:
simulating the preset times N according to a normal distribution function by taking the target value of the target test voltage as a central value to obtain N test voltage values of the target test voltage;
wherein N is an integer greater than or equal to 1.
Further, the target test voltage includes a charging pile input voltage of a power source to be tested, a power battery output high voltage and a storage battery output low voltage, wherein N test voltage values of the target test voltage are obtained, including:
and obtaining the test voltage values corresponding to the input voltage of the charging pile, the output voltage of the power battery and the output voltage of the storage battery at each simulation point in N times of simulation.
Further, the testing the power supply to be tested according to the test voltage value includes:
and testing the power supply to be tested according to the test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which are respectively corresponding to the N simulation points.
Further, the test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage respectively corresponding to the N simulation points are used for testing the power supply to be tested, and the test voltage values comprise:
obtaining test voltage groups obtained by grouping test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which respectively correspond to the N simulation points;
and sequentially inputting the test voltage group into a test system of the power supply to be tested to acquire the abnormal state of the power supply to be tested.
Further, the acquiring the abnormal state of the power supply to be tested includes:
determining whether the power distribution of the power supply to be tested is correct or not according to the abnormal state of the power supply to be tested;
and when the power distribution of the power supply to be tested is incorrect, obtaining a test voltage value of a target test voltage in the current test system.
The embodiment of the invention also provides a power supply testing device, which comprises:
the acquisition module is used for simulating a target value of a target test voltage to obtain a test voltage value of the target test voltage; the target test voltage comprises at least one of charging pile input voltage, power battery output high voltage and storage battery output low voltage of a power source to be tested;
and the processing module is used for testing the power supply to be tested according to the test voltage value.
Further, the obtaining module includes:
the acquisition unit is used for simulating a preset number of times N according to a normal distribution function by taking a target value of the target test voltage as a central value to obtain N test voltage values of the target test voltage;
wherein N is an integer greater than or equal to 1.
Further, the target test voltage includes a charging pile input voltage, a power battery output high voltage and a storage battery output low voltage of the power supply to be tested, wherein the obtaining unit is further configured to obtain each simulation point in N-time simulation, and the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage respectively correspond to the test voltage value.
An embodiment of the present invention further provides a power supply testing apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the power supply testing method described above.
The invention has the beneficial effects that:
according to the scheme, the target value of the target test voltage is simulated, so that the test voltage is simulated by taking a common working condition as a center, the simulation times can be flexibly determined according to the actual working condition, the number of the test sampling points is determined, and the power distribution matching requirement of the power supply to be tested is met.
Drawings
FIG. 1 is a flow chart of a power testing method according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a power supply testing apparatus according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a power supply testing method, a power supply testing device and power supply testing equipment aiming at the problem of how to improve the coverage of testing voltage.
As shown in fig. 1, an embodiment of the present invention provides a power supply testing method, where the method includes:
and step 12, testing the power supply to be tested according to the test voltage value.
The embodiment of the invention simulates the target value of the target test voltage, ensures that the selection of the test voltage is simulated by taking a common working condition as a center, can flexibly determine the simulation times according to the actual working condition, determines the number of the test sampling points, and meets the power distribution matching requirement of the power supply to be tested.
It should be noted that, in the charging mode of the power supply to be tested, the input voltage of the charging pile is within a rated fluctuation range of 220V and +/-15%, after power conversion, a high-voltage power battery is output, the range of the high voltage output of the power battery is 220V-490V, the low voltage output of the power battery is connected with a storage battery, and the range of the low voltage output of the storage battery is 9V-16V. The existing power supply testing method comprises the following steps: the output high voltage of the power battery and the output low voltage of the storage battery are rated values, and the input voltages are respectively tested to be 187V, 220V and 253V; the input voltage and the low voltage output by the storage battery are rated values, and the high voltage output by the power battery is respectively tested to be 220V, 355V and 490V; the input voltage and the output high voltage of the power battery are rated values, and the output low voltage of the storage battery is respectively tested to be 9V, 14V and 16V. However, in practical applications, the voltage value of the input voltage is about 220V, and the limit condition is lower than 187V or higher than 253V; the voltage value of the high voltage output by the power battery is about 355V, and the voltage is gradually increased to 490V from 220V in the charging process; the voltage value of the low voltage output by the storage battery is about 14V and fluctuates between 12V and 16V. The power conversion module of the power supply can adjust a control strategy in real time according to the change of input and output working conditions, power matching is carried out according to the output voltage condition, and when power distribution is incorrect, the power supply can be caused to work abnormally.
It should be further noted that, in the existing testing method, the testing coverage is low, and sufficient testing of power distribution of the power supply cannot be guaranteed. In order to ensure the test coverage, if all the voltages are arranged and combined in a traversing manner, the problem of large workload is caused.
Therefore, in order to improve the testing efficiency on the basis of ensuring the coverage, the step 11 simulates the target value of the target test voltage to obtain the test voltage value of the target test voltage, and includes:
simulating the preset times N according to a normal distribution function by taking the target value of the target test voltage as a central value to obtain N test voltage values of the target test voltage;
wherein N is an integer greater than or equal to 1.
It should be noted that, when testing the power supply to be tested, the actual application situation and the combined working condition need to be considered at the same time, so as to improve the test coverage and pertinence. Specifically, the relationship between the test voltage value of the target test voltage and the target test voltage is Vtest＝f(V1,V2,…Vn) Wherein the target test voltage can be expressed as a superposition of the nominal value and the variation value, i.e. Vi＝V0+ΔVi. Wherein the variation value DeltaViCan be regarded as random variable, then according to the central limit theorem, it can be obtained that the variation value conforms to the normal distribution DeltaVi～N(μi，ρi) Therefore, when the test voltage value of the target test voltage is obtained, the target value of the target test voltage can be used as a central value, the simulation of the preset times N is performed according to a normal distribution function, preferably, when the distribution conditions of the preset times N and the sampling values are determined, the random simulation is performed according to a Monte Carlo method, specifically, the distribution conditions of each target test voltage are sampled according to the actual working condition, so that the actual application scene is closer, and the test coverage and the test pertinence to the common working condition are improved.
Specifically, the target test voltage includes a charging pile input voltage of a power source to be tested, a power battery output high voltage and a storage battery output low voltage, wherein N test voltage values of the target test voltage are obtained, including:
and obtaining the test voltage values corresponding to the input voltage of the charging pile, the output voltage of the power battery and the output voltage of the storage battery at each simulation point in N times of simulation.
It should be noted that, in the embodiment of the present invention, the target test voltage includes at least one of a charging pile input voltage, a power battery output high voltage, and a storage battery output low voltage of the power source to be tested; therefore, when the test voltage value is obtained, the test voltage values corresponding to the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage of each simulation point are obtained.
Specifically, the step 12 of testing the power supply to be tested according to the test voltage value includes:
and testing the power supply to be tested according to the test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which are respectively corresponding to the N simulation points.
It should be noted that, in the embodiment of the present invention, the test voltage value obtained through simulation is used to implement the test on the power supply to be tested.
Specifically, the test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage respectively corresponding to the N simulation points are used for testing the power supply to be tested, and the test voltage values include:
obtaining test voltage groups obtained by grouping test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which respectively correspond to the N simulation points;
and sequentially inputting the test voltage group into a test system of the power supply to be tested to acquire the abnormal state of the power supply to be tested.
It should be noted that, in the embodiments of the present invention, a plurality of test voltage groups are obtained by randomly combining the test voltage values obtained through simulation, and specifically, the test voltage groups can cover various working conditions of the power supply to be tested in the actual application process.
Specifically, the acquiring the abnormal state of the power supply to be tested includes:
determining whether the power distribution of the power supply to be tested is correct or not according to the abnormal state of the power supply to be tested;
and when the power distribution of the power supply to be tested is incorrect, obtaining a test voltage value of a target test voltage in the current test system.
It should be noted that, in the embodiment of the present invention, when the abnormal state of the power supply to be tested is monitored, it can be obtained that the power distribution of the power supply is incorrect when the target test voltage takes the current test voltage value in the current test environment by determining whether the power distribution of the power supply is correct. The control strategy of the power supply needs to be adjusted, so that the power supply is ensured not to be abnormal in the actual application process.
It should be further noted that the vehicle-mounted power supply product is used as a core component of the electric vehicle, and the test result of the vehicle-mounted power supply product is directly related to the quality of the product.
As shown in fig. 2, an embodiment of the present invention further provides a power supply testing apparatus, where the apparatus includes:
the acquisition module 21 is configured to simulate a target value of a target test voltage to obtain a test voltage value of the target test voltage; the target test voltage comprises at least one of charging pile input voltage, power battery output high voltage and storage battery output low voltage of a power source to be tested;
and the processing module 22 is configured to test the power supply to be tested according to the test voltage value.
The embodiment of the invention simulates the target value of the target test voltage, ensures that the selection of the test voltage is simulated by taking a common working condition as a center, can flexibly determine the simulation times according to the actual working condition, and determines the number of the test sampling points, thereby meeting the power distribution matching requirement of the power supply to be tested.
Specifically, the obtaining module 21 includes:
the acquisition unit is used for simulating a preset number of times N according to a normal distribution function by taking a target value of the target test voltage as a central value to obtain N test voltage values of the target test voltage;
wherein N is an integer greater than or equal to 1.
Specifically, the target test voltage includes a charging pile input voltage, a power battery output high voltage and a storage battery output low voltage of a power supply to be tested, wherein the obtaining unit is further configured to obtain each simulation point at N times of simulation, and the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage respectively correspond to the test voltage value.
Specifically, the processing module 22 includes:
and the processing unit is used for testing the power supply to be tested according to the test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which respectively correspond to the N simulation points.
Specifically, the processing unit includes:
the first acquisition subunit is used for acquiring a test voltage group obtained by grouping test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which respectively correspond to the N simulation points;
and the second acquisition subunit is used for sequentially inputting the test voltage groups into the test system of the power supply to be tested and acquiring the abnormal state of the power supply to be tested.
Specifically, the second obtaining subunit is further configured to determine whether the power distribution of the power supply to be tested is correct according to the abnormal state of the power supply to be tested; and when the power distribution of the power supply to be tested is incorrect, acquiring a test voltage value of a target test voltage in the current test system.
An embodiment of the present invention further provides a power supply testing apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the power supply testing method described above.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A method for testing a power supply, the method comprising:
simulating a target value of a target test voltage to obtain a test voltage value of the target test voltage; the target test voltage comprises at least one of charging pile input voltage, power battery output high voltage and storage battery output low voltage of a power source to be tested;
and testing the power supply to be tested according to the test voltage value.
2. The power supply testing method according to claim 1, wherein the simulating the target value of the target test voltage to obtain the test voltage value of the target test voltage comprises:
simulating the preset times N according to a normal distribution function by taking the target value of the target test voltage as a central value to obtain N test voltage values of the target test voltage;
wherein N is an integer greater than or equal to 1.
3. The power supply testing method according to claim 2, wherein the target testing voltage comprises a charging pile input voltage, a power battery output high voltage and a storage battery output low voltage of the power supply to be tested, and wherein obtaining N testing voltage values of the target testing voltage comprises:
and obtaining the test voltage values corresponding to the input voltage of the charging pile, the output voltage of the power battery and the output voltage of the storage battery at each simulation point in N times of simulation.
4. The power supply testing method of claim 2, wherein the testing the power supply to be tested according to the testing voltage value comprises:
and testing the power supply to be tested according to the test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which are respectively corresponding to the N simulation points.
5. The power supply testing method according to claim 4, wherein the testing of the power supply to be tested with the testing voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage respectively corresponding to the N analog points comprises:
obtaining test voltage groups obtained by grouping test voltage values of the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage which respectively correspond to the N simulation points;
and sequentially inputting the test voltage group into a test system of the power supply to be tested to acquire the abnormal state of the power supply to be tested.
6. The power supply testing method of claim 5, wherein the obtaining of the abnormal state of the power supply to be tested comprises:
determining whether the power distribution of the power supply to be tested is correct or not according to the abnormal state of the power supply to be tested;
and when the power distribution of the power supply to be tested is incorrect, obtaining a test voltage value of a target test voltage in the current test system.
7. A power supply testing apparatus, the apparatus comprising:
the acquisition module is used for simulating a target value of a target test voltage to obtain a test voltage value of the target test voltage; the target test voltage comprises at least one of charging pile input voltage, power battery output high voltage and storage battery output low voltage of a power source to be tested;
and the processing module is used for testing the power supply to be tested according to the test voltage value.
8. The power supply testing device of claim 7, wherein the obtaining module comprises:
the acquisition unit is used for simulating a preset number of times N according to a normal distribution function by taking a target value of the target test voltage as a central value to obtain N test voltage values of the target test voltage;
wherein N is an integer greater than or equal to 1.
9. The power supply testing device according to claim 8, wherein the target testing voltage comprises a charging pile input voltage, a power battery output high voltage and a storage battery output low voltage of the power supply to be tested, and wherein the obtaining unit is further configured to obtain the testing voltage values corresponding to the charging pile input voltage, the power battery output high voltage and the storage battery output low voltage respectively at each simulation point of N times of simulation.
10. A power supply test apparatus, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing a power supply testing method as claimed in any one of claims 1 to 6.
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| CN202010349810.3A CN113567876B (en) | 2020-04-28 | Power supply testing method, device and equipment |
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| CN202010349810.3A CN113567876B (en) | 2020-04-28 | Power supply testing method, device and equipment |
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| CN113567876A true CN113567876A (en) | 2021-10-29 |
| CN113567876B CN113567876B (en) | 2024-05-28 |
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