Electrical performance testing device of off-board charger
By optimizing the electromechanical performance testing process for off-board chargers and reducing the number of test points and communication connections, the problem of long testing time in existing technologies has been solved, achieving higher testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI QUALITY METROLOGY SUPERVISION & INSPECTION INST GUANGDONG PROVINCE
- Filing Date
- 2025-02-28
- Publication Date
- 2026-04-14
AI Technical Summary
In the existing non-vehicle-mounted charger electromechanical performance testing process, there are many test points and each test item needs to be performed sequentially, resulting in long testing time and low efficiency.
By reducing the number of test points and the number of communication connections with charging piles, and by optimizing the testing process using components such as industrial control computers, programmable power supplies, and loads, simultaneous testing of test points with the same parameters can be achieved.
It shortens the testing cycle by approximately 29%, improves testing efficiency, is applicable to various testing scenarios, and offers economic benefits.
Smart Images
Figure CN224122671U_ABST
Abstract
Description
Technical Field
[0001] This utility model applies to the technical field of electrical performance testing of off-vehicle chargers, and particularly relates to an electrical performance testing device for off-vehicle chargers. Background Technology
[0002] Currently, the testing standards for off-board chargers involve numerous and complex electrical performance tests, resulting in many test points and long testing times. Therefore, improving the testing efficiency of off-board chargers is of great significance. While the electrical performance testing of off-board chargers has largely been automated, each test item's steps must be executed sequentially until all tests are completed. Each test requires the charger to reconnect, perform handshake confirmation, self-test, and communication, consuming significant time and impacting testing efficiency.
[0003] During the testing of the electrical performance of off-board chargers, the steps for each test item must be executed sequentially until all tests are completed. Each test requires the charger to reconnect, perform handshake confirmation, self-test, and communication, consuming significant time and impacting testing efficiency. When the second test module is selected, the testing method is as follows: Figure 5 As shown, each test item is executed sequentially until all test items have completed. The test points required for the electrical performance test items are as follows: Figure 3 As shown, there are a total of 104 points. Taking the "current stability accuracy" test as an example, this test alone requires measuring 27 test points. Test module 1 needs to connect the charger to the test system and set it to run in constant current mode. The output current value is set, and the input voltage is adjusted to 85%, 100%, and 115% of the rated value. The output voltage is then adjusted within the upper and lower limits, and the charger's output current value is measured to find the limit value IM of the charging current within the above range. The output current setting is changed within the range of 20% of the rated output current value to the maximum output current value, and the above measurements are repeated until all 27 test points are tested. For each test item, the charger needs to be reconnected, handshake confirmed, self-tested, and communicated again. The entire testing process is time-consuming and inefficient. Therefore, it is necessary to provide a non-vehicle-mounted charger electrical performance testing device that reduces the number of test points and the number of communication connections with the charging pile, shortens the testing cycle, is suitable for various testing scenarios, saves testing time, and improves testing efficiency. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electrical performance testing device for a non-vehicle-mounted charger. By reducing the number of test points and the number of times it connects and communicates with the charging pile, the test cycle is shortened. It is applicable to a variety of test scenarios, saves test time, and helps to improve test efficiency.
[0005] The technical solution adopted by this utility model is as follows: This utility model includes a charger under test and an industrial control computer. The industrial control computer is connected to the charger under test in sequence via a first test module and a power analyzer. The charger under test is connected to a programmable AC power supply and a programmable DC load.
[0006] As can be seen from the above scheme, this application simultaneously performs all relevant test items at test points with the same parameters and the same working state of the charger during the test, eliminating the need to test each test item separately at each test point. By leveraging the shared nature of test points, the test process is optimized. This optimization method can reduce the number of test points and the number of communication connections with the charging pile, shorten the test cycle, and improve test efficiency. It has good universality and can be promoted to various laboratories and institutions, thus possessing certain economic benefits.
[0007] In a preferred embodiment, the electrical performance testing device for the off-board charger further includes a DC vehicle interface simulator and a battery simulator. The DC vehicle interface simulator is connected to the charger under test, and the battery simulator is connected to the DC vehicle interface simulator, the programmable AC power supply, and the programmable DC load.
[0008] In a preferred embodiment, the electrical performance testing device for the off-board charger further includes an AC parameter acquisition cabinet, the programmable AC power supply is connected to the charger under test via the AC parameter acquisition cabinet, and the power analyzer is connected to the AC parameter acquisition cabinet.
[0009] In a preferred embodiment, the electrical performance testing device for the off-board charger further includes a DC parameter acquisition cabinet, the programmable DC load is connected to the charger under test via the DC parameter acquisition cabinet, and the power analyzer is connected to the DC parameter acquisition cabinet.
[0010] In a preferred embodiment, the first test module includes 104 test points, which include 27 CV mode test points and 27 CC mode test points. The 27 CV mode test points and the 27 CC mode test points constitute the complete set of 104 test points for all electrical performance test items. Attached Figure Description
[0011] Figure 1 This is a system architecture diagram of this utility model;
[0012] Figure 2 This is a flowchart illustrating the workflow of selecting the first test module for testing;
[0013] Figure 3 This is a table of test points that need to be tested in existing electrical performance testing projects;
[0014] Figure 4 This is a table of test points that need to be tested in the electrical performance testing project of this utility model;
[0015] Figure 5 This is a diagram of the test method when the second test module is selected for testing;
[0016] Figure 6 This is a diagram of the test method for selecting the first test module for testing;
[0017] Figure 7 This is a flowchart illustrating the workflow for selecting the second test module for testing. Detailed Implementation
[0018] like Figure 1 and Figure 2 As shown, in this embodiment, the present invention includes a charger under test 1 and an industrial control computer 2. The industrial control computer 2 is connected to the charger under test 1 via a first test module 3 and a power analyzer 4 in sequence. The charger under test 1 is connected to a programmable AC power supply 5 and a programmable DC load 6.
[0019] The industrial control computer 2 serves as the test terminal; the power analyzer 4 is used for data acquisition; the programmable AC power supply 5 supplies power to the charger under test 1 and can be remotely controlled by the industrial control computer 2 to adjust the input voltage of the charger under test 1 according to test requirements; the programmable DC load 6 provides a load to the charger under test 1 and can be remotely controlled by the industrial control computer 2 to adjust the output current according to test requirements. According to test requirements, the industrial control computer 2 selects the first test module 3 to configure the parameters of the programmable AC power supply 5 and the programmable DC load 6, and completes the connection, self-test, communication, and power-on actions with the charger under test 1 through the DC vehicle interface simulator 7 and the battery simulator 8. During the test, the power analyzer 4 collects the required data and records and saves it on the industrial control computer 2. All relevant test items are performed simultaneously at test points with the same parameters and the same charger operating state during the test, eliminating the need to test each test item separately at each test point. Through the shared nature of test points, this invention optimizes the test process. This optimization method can reduce the number of test sites and the number of times it connects and communicates with charging piles, thus shortening the test cycle.
[0020] like Figure 2 ,Figure 4 as well as Figure 6 As shown, in this embodiment, when the first test module 3 is selected for testing, the test method is as follows: Figure 6 As shown. The testing method of the first test module 3 is to simultaneously test test points with the same test parameters and the same charging pile operating state during the test. The data from these test points can be shared by all test items. Accordingly, the test points of all test items in the electrical performance can be classified, such as... Figure 4 As shown, test module 2 only needs to run 54 test points to collect the data required for the test items, which is also the complete set of test points for all test items. First, 27 test points are run in CV mode, and then 27 test points are run in CC mode. During the execution of each test point, all test items jointly acquire the test data for that state. After experimental comparison, using the first test module 3 to complete the electrical performance testing task can save approximately 29% of the testing time, greatly improving testing efficiency.
[0021] like Figure 1 As shown, in this embodiment, the electrical performance testing device for the off-board charger further includes a DC vehicle interface simulator 7 and a battery simulator 8. The DC vehicle interface simulator 7 is connected to the charger under test 1, and the battery simulator 8 is connected to the DC vehicle interface simulator 7, the programmable AC power supply 5, and the programmable DC load 6. The DC vehicle interface simulator 7 facilitates data acquisition and can be remotely controlled by the industrial control computer 2 to simulate the insertion and removal of the charger gun head; the battery simulator 8 provides the required battery voltage for the charger to start charging.
[0022] like Figure 1 As shown, in this embodiment, the electrical performance testing device for the off-board charger further includes an AC parameter acquisition cabinet 9. The programmable AC power supply 5 is connected to the charger under test 1 via the AC parameter acquisition cabinet 9, and the power analyzer 4 is connected to the AC parameter acquisition cabinet 9. The AC parameter acquisition cabinet 9 is used to facilitate data acquisition.
[0023] like Figure 1 As shown, in this embodiment, the electrical performance testing device for the off-board charger further includes a DC parameter acquisition cabinet 10. The programmable DC load 6 is connected to the charger under test 1 via the DC parameter acquisition cabinet 10, and the power analyzer 4 is connected to the DC parameter acquisition cabinet 10. The DC parameter acquisition cabinet 10 is used to facilitate data acquisition.
[0024] like Figure 4As shown, in this embodiment, the first test module 3 includes 104 test points for all electrical performance test items. The 104 test points include 27 non-repeating CV mode test points and 27 CC mode test points. The 27 CV mode test points and the 27 CC mode test points are the complete set of 104 test points for all electrical performance test items.
[0025] like Figure 1 , Figure 3 , Figure 5 as well as Figure 7 As shown, in this embodiment, the electrical performance testing device for the off-board charger further includes a second testing module 11. The industrial control computer 2 is sequentially connected to the power analyzer 4 via the second testing module 11. The second testing module 11, as a traditional testing module, is suitable for scenarios where only a few items need to be tested. The second testing module 11 is only used for scenarios where only a few electrical performance items are tested, for example, after the first testing module 3 has completed the full-item test, the individual unqualified items are retested.
[0026] In this embodiment, the industrial control computer 2 selects the second test module 11, specifically checks the non-conforming item, and the second test module 11 automatically sends instructions to test the item, collects and saves the test data, completes the test, and automatically generates a test record. See the test flowchart. Figure 7 .
[0027] In this embodiment, the industrial control computer 2 selects the first test module 3, checks all test items, and the first test module 3 automatically sends instructions to adjust the charger under test to the state of 27 test points in CV mode, collects and saves the test data of all test items in these 27 test point states. Then, it automatically sends instructions to adjust the charger under test 1 to the state of 27 test points in CC mode, collects and saves the test data of all test items in these 27 test point states, completes the test, and automatically generates a test record. The test flowchart is as follows. Figure 2 As shown.
[0028] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.
Claims
1. An electrical performance testing device for a non-vehicle-mounted charger, comprising a charger under test (1), characterized in that: The electrical performance testing device for the off-board charger also includes an industrial control computer (2), a DC vehicle interface simulator (7), and a battery simulator (8). The industrial control computer (2) is connected to the charger under test (1) via a first test module (3) and a power analyzer (4) in sequence. The charger under test (1) is connected to a programmable AC power supply (5) and a programmable DC load (6). The DC vehicle interface simulator (7) is connected to the charger under test (1). The battery simulator (8) is connected to the DC vehicle interface simulator (7), the programmable AC power supply (5), and the programmable DC load (6).
2. The electrical performance testing device for a non-vehicle-mounted charger according to claim 1, characterized in that: The electrical performance testing device for the off-board charger also includes an AC parameter acquisition cabinet (9). The programmable AC power supply (5) is connected to the charger under test (1) via the AC parameter acquisition cabinet (9), and the power analyzer (4) is connected to the AC parameter acquisition cabinet (9).
3. The electrical performance testing device for a non-vehicle-mounted charger according to claim 1, characterized in that: The electrical performance testing device for the off-board charger also includes a DC parameter acquisition cabinet (10), the programmable DC load (6) is connected to the charger under test (1) via the DC parameter acquisition cabinet (10), and the power analyzer (4) is connected to the DC parameter acquisition cabinet (10).
4. The electrical performance testing device for a non-vehicle-mounted charger according to claim 1, characterized in that: The first test module (3) includes 104 test points for the entire electrical performance test. The 104 test points include 27 non-repeating CV mode test points and 27 CC mode test points. The 27 CV mode test points and the 27 CC mode test points are the complete set of 104 test points for the entire electrical performance test.