An anti-shock test device for inverter power supply

Abstract

The invention discloses an anti-impact test device for an inverter power supply, comprising a main circuit contactor and a test branch connected in series between output lines of the inverter power supply, wherein the test branch comprises a plurality of parallel branches connected in parallel, each parallel branch comprises a branch contactor and a test device in series, and the change between a non-working state and a working state of the test device is visible to the naked eye; the anti-impact test device for the inverter power supply also comprises a contactor state detection module, an impact management unit, an impact power input module and a contactor control module. The anti-impact test device for the inverter power supply of the invention is more accurate in calculating the number of test devices and will not make mistakes; at the same time, the number of times the test devices in all parallel branches are used is balanced; the production efficiency is improved and the failure probability of the test device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of impact testing of inverter power supplies, in particular to an anti-impact testing device for an inverter power supply. Background Art

[0002] As a device that converts DC power (such as batteries and storage bottles) into AC power (generally 220V, 50HZ sine wave), the primary task of the inverter is to supply power to the load. In order to avoid damage to equipment and circuits caused by special circumstances during use, such as sudden impact loads and inverter overload, an inverter protection circuit is often set in the inverter. The inverter power supply of each power range has its own indicators for how large the sudden impact load will be before the inverter protection circuit is activated. These indicators are strictly tested during the product development process and before leaving the factory.

[0003] The existing inverter power supply impact test device, such as Figure 1 As shown, it includes a contactor RLY' and a test branch 1' connected in series between the output lines (L', N') of the inverter power supply. The test branch 1' includes a plurality of parallel branches 11' connected in parallel. Each parallel branch 11' includes a switch K' and a test device D' in series. The test device D' has a visible change between not working and working normally. During the test, a corresponding number of test parallel branches 11' are selected according to the impact power designed when the inverter power supply is produced. The total rated power of the test devices D' in all the selected parallel branches 11' is equal to the impact power designed when the inverter power supply is produced. After closing the switches K' in all the selected parallel branches 11', the contactor RLY' is triggered to energize the test devices D' in all the selected parallel branches 11'. The change of the test device D' is observed to determine whether the impact load under the corresponding power will cause the inverter protection circuit of the inverter power supply to start, thereby testing whether the actual impact resistance result of the inverter power supply is consistent with the impact power designed during production.

[0004] In order to be compatible with the impact test of inverters of different power levels and avoid the continuous use of the same test device D' under the condition of heating, the number of test branches 1' in the existing inverter impact test device is generally large, so that the test devices D' in all test branches 1' can be used in turn. However, in the existing inverter impact test device, the use of the test device D' is manually selected and controlled by the operator. Due to the limitations of the operator's memory ability, it is very easy to cause uneven distribution of the number of test devices D' used. Some test devices D' are used frequently, and some test devices D' are used less frequently. The test devices D' with high frequency of use are damaged because the temperature of the previous use has not dissipated and they are used continuously at high temperature. On the other hand, due to their limited service life, excessive use will cause damage to the test devices D'. In addition, when testing a high-power inverter, the number of test devices D' used in the test branch 1' is large, and it is easy to make mistakes when manually selecting and controlling the number of test devices D', resulting in inaccurate test data. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-impact testing device for an inverter power supply.

[0006] To achieve the purpose of the present invention, the technical scheme is now described in detail: an anti-shock test device for an inverter power supply, comprising a main circuit contactor and a test branch connected in series between the output lines of the inverter power supply, wherein the test branch comprises a plurality of parallel branches connected in parallel, each parallel branch comprises a branch contactor and a test device connected in series, and the change between the non-working state and the working state of the test device is visible to the naked eye; the anti-shock test device for the inverter power supply also comprises a contactor state detection module, an impact management unit, an impact power input module and a contactor control module, the impact management unit comprises a test device working times statistics module and an impact configuration module, the main circuit contactor and all branch contactors are communicatively connected to the contactor state detection module, the contactor state detection module is communicatively connected to the test device working times statistics module, the impact configuration module and the contactor control module in sequence, the contactor control module is communicatively connected to the main circuit contactor and all branch contactors, and the impact configuration module is also communicatively connected to the impact power input module, wherein: the contactor state detection module detects the working states of the main circuit contactor and all branch contactors at all times, and The working status signals of the main contactor and all the branch contactors are sent to the test device working times statistics module; the test device working times statistics module of the impact management unit receives the working status signal transmitted by the contactor state detection module, counts the historical working times of all the branch contactors, and sends the historical working times signal to the impact configuration module; the impact power input module is used to input the impact power required to be tested by the inverter power supply; the impact configuration module of the impact management unit receives the impact power input by the impact power input module; the number of test devices required to be used is calculated; the historical working times signals of each test device sent by the test device working times statistics module are compared and selected, and the test devices required to be used and the corresponding branch contactors are located and configured; the "close" and "disconnect" instructions about the main contactor and the branch contactors in the parallel branches are sent to the contactor control module; the contactor control module receives the "close" and "disconnect" instructions about the main contactor and the branch contactors in the parallel branches sent by the impact configuration module, and controls the status of the main contactor and the branch contactors in the parallel branches.

[0007] Furthermore, the anti-shock test device of the inverter power supply also includes a contactor fault alarm module, and the shock management unit also includes a contactor fault detection module. The contactor fault detection module is respectively connected to the contactor state detection module, the shock configuration module, and the contactor fault alarm module, wherein: the contactor state detection module also sends the working state signals of the main contactor and all the branch contactors detected at any time to the contactor fault detection module; the shock configuration module of the shock management unit also sends the position information of the branch contactor corresponding to the test device required to be used that is located and configured to the contactor fault detection module; receives the fault information of the main contactor and the branch contactor sent by the contactor fault detection module, and the position information of the branch contactor with the fault; the contactor fault detection module receives the contactor state detection module The block sends the working status signals of the main contactor and all the branch contactors, and the position information of the branch contactor corresponding to the test device to be used and located by the impact configuration module; compares the branch contactors corresponding to the test device to be used and the state before and after the main contactor is closed, and determines whether the branch contactors corresponding to the test device to be used and the main contactor are faulty; sends the fault information of the branch contactor and the main contactor to the impact configuration module and the contactor fault alarm module; locates the position of the faulty branch contactor, and sends the position information of the faulty branch contactor to the impact configuration module; the contactor fault alarm module receives the fault signal of the branch contactor and the main contactor sent by the contactor fault detection module, and makes a warning response.According to the present invention, after the impact configuration module issues a "close" instruction for the shunt contactor corresponding to the test device with the corresponding number and the least number of historical working times located in this test, the contactor state detection module detects the state of the corresponding shunt contactor before and after the "close" instruction is issued, and the contactor fault detection module compares the states of the shunt contactors before and after the shunt contactors corresponding to the test device with the corresponding number and the least number of historical working times used this time, and determines whether there is a fault in the shunt contactor corresponding to the test device with the corresponding number and the least number of historical working times used this time, if there is a shunt contactor with a fault in the shunt contactors with the corresponding number and the corresponding position, the position of the shunt contactor with the fault is located, and the position information and fault information of the shunt contactor with the fault are sent to the impact configuration module of the impact management unit, and the fault signal of the shunt contactor with the fault in the shunt contactors with the corresponding number and the corresponding position is sent to the contactor fault alarm module, the impact configuration module receives the position information and fault signal of the shunt contactor with the fault sent by the contactor fault detection module, and after receiving the fault signal of the shunt contactor with the fault sent by the contactor fault detection module, sends a "disconnect" instruction for all shunt contactors in the parallel branch to the contactor control module, canceling the present invention. The test is performed once, and the corresponding number of shunt contactors with the least number of historical working times and no faults are relocated and configured, and a "close" instruction about the shunt contactors located and configured in the parallel branch is sent to the contactor control module, and the position information of the corresponding number of shunt contactors relocated is sent to the contactor fault detection module; when the contactor fault detection module detects that the shunt contactors located and configured have no faults, the impact configuration module sends a "close" instruction about the main contactor to the contactor control module, and the contactor status detection module detects whether the main contactor is closed before and after the "close" instruction is issued. The contactor fault detection module compares the states of the main contactors before and after to determine whether the main contactor has a fault. If the main contactor has a fault, the impact configuration module sends a "disconnect" instruction about the main contactor and all branch contactors in the parallel branch to the contactor control module to cancel the test. If the main contactor has no fault, observe the changes in the test device used to determine the anti-impact test result of the inverter power supply. The impact configuration module sends a "disconnect" instruction about the main contactor and all branch contactors in the parallel branch to the contactor control module, and the test is completed. The anti-impact test device of the inverter power supply effectively avoids the influence of the faults of the main contactor and the branch contactor on the test results, thereby making the test more accurate.

[0008] Furthermore, the impact management unit also includes a time control module that is communicatively connected to the impact configuration module, wherein: the time control module is used to record the time difference between the last use of each test device and the time to be used this time, and send the time difference between the last use of each test device and the time to be used this time to the impact configuration module; the impact configuration module also receives the time difference between the last use of each test device and the time to be used this time sent by the time control module, and excludes the test devices and the corresponding shunt contactors whose time difference between the last use and the time to be used this time is too short when positioning and configuring the corresponding number of test devices and the corresponding shunt contactors this time. In the present invention, the time control module records the time difference between the last use of each test device and the time to be used this time, so that when the impact configuration module positions and configures the corresponding number of test devices and the corresponding shunt contactors this time, the test devices and the corresponding shunt contactors whose time difference between the last use and the time to be used this time is too short are excluded, thereby ensuring that the test devices previously involved in the task have enough time to dissipate heat, avoiding the use of the test devices at high temperatures, and thus extending the service life of the test devices.

[0009] Furthermore, all the test devices in the parallel branch are iodine tungsten lamps. The iodine tungsten lamps emit light when powered on, and the phenomenon of reflecting the test results is intuitive. In addition, because the impact power of the inverter power supply is generally large, and the iodine tungsten lamp is also a high-power lamp among lamps, in the impact resistance test of the inverter power supply, the number of iodine tungsten lamps used in each test is relatively small, and the configuration is more convenient.

[0010] The impact resistance test device of the inverter power supply of the present invention has a contactor state detection module that constantly detects the working state of the main contactor and all the branch contactors, and sends the working state signals of the main contactor and all the branch contactors to the test device working number statistics module. The test device working number statistics module of the impact management unit receives the signal transmitted by the contactor state detection module, counts the historical working times of each branch contactor, and sends the historical working number signal to the impact configuration module. During operation, the impact power required to be tested by the inverter power supply is input by the impact power input module, the impact configuration module of the impact management unit calculates the number of test devices required to be used according to the impact power, and compares and selects the historical working number signals of each test device sent by the test device working number statistics module according to the historical working number signal of the test device, locates the corresponding number of test devices with the least historical working times and the corresponding branch contactors, sends the "closing" instruction about the main contactor and the corresponding number of branch contactors with the least historical working times in the parallel branch to the contactor control module, and the contactor control module controls the main contactor and the parallel branch. The corresponding number of shunt contactors with the least historical working times are closed, and the corresponding number of test devices are energized. The changes of the test devices after energization are observed. If the test devices work successfully, it means that the shock resistance of the tested inverter power supply can meet the design requirements in actual use. If the test devices fail to work successfully, it means that the shock resistance of the tested inverter power supply fails to meet the design requirements in actual use. After completing the test, the shock configuration module of the shock management unit sends a "disconnect" instruction about the main contactor and the shunt contactors in all parallel branches to the contactor control module. The contactor control module controls the main contactor and the shunt contactors in all parallel branches to disconnect, and the test ends.

[0011] The anti-shock testing device for the inverter power supply of the present invention has the following advantages:

[0012] 1) After the impact power to be tested of the inverter power supply is input through the impact power input module, the impact configuration module of the impact management unit calculates the number of test devices required, which avoids manual calculation by the operator and is more accurate in calculating the number of test devices without errors; 2) After the impact configuration module of the impact management unit calculates the number of test devices required, it also selects and configures the corresponding number of test devices. During configuration, the test device with the least number of historical working times before this test is selected and located for use in this test, which balances the number of times the test devices in all parallel branches are used, ensuring that the utilization rate of each test device is consistent, and avoiding damage to some test devices due to excessive use; 3) Intelligent cluster control replaces the original manual control, which improves production efficiency, reduces the failure probability of the test device, and improves the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an existing anti-impact test device for an inverter power supply;

[0014] Figure 2 It is a structural schematic diagram of the anti-impact testing device of the inverter power supply of the present invention. DETAILED DESCRIPTION

[0015] The following is a detailed description of a preferred embodiment of the anti-shock test device for an inverter power supply of the present invention in conjunction with the accompanying drawings:

[0016] like Figure 2As shown, an anti-shock test device for an inverter power supply includes a main circuit contactor RLY0 and a test branch 1 connected in series between the output lines (L, N) of the inverter power supply, wherein the test branch 1 includes a plurality of parallel branches 11 connected in parallel, and each parallel branch 11 includes a branch contactor RLY1 and an iodine tungsten lamp D connected in series; the anti-shock test device for the inverter power supply also includes a contactor state detection module 2, an impact management unit 3, an impact power input module 4, a contactor control module 5 and a contactor fault alarm module 6, the impact management unit 3 includes a test device working times statistics module 31, an impact configuration module 32, a contactor fault detection module 33 and a time control module 34, the main circuit contactor RLY0 and all the branch contactors RLY1 is connected to the contactor state detection module 2 in communication, the contactor state detection module 2 is connected to the test device working times statistics module 31, the impact configuration module 32, and the contactor control module 5 in communication in sequence, the contactor fault detection module 33 is connected to the contactor state detection module 2, the impact configuration module 32, and the contactor fault alarm module 6 in communication, the impact configuration module 32 is also connected to the time control module 34 and the impact power input module 4 in communication, the contactor control module 5 is connected to the main contactor RLY0 and all the branch contactors RLY1 in communication, wherein: the contactor state detection module 2 detects the working status of the main contactor RLY0 and all the branch contactors RLY1 at all times, and sends the main contactor RLY0 to the main contactor RLY1. The working state signals of LY0 and all the branch contactors RLY1 are sent to the test device working number statistics module 31 and the contactor fault detection module 33; the test device working number statistics module 31 of the impact management unit 3 receives the working state signal transmitted by the contactor state detection module 2, counts the historical working times of all the branch contactors RLY1, and sends the historical working number signal to the impact configuration module 32; the impact power input module 4 is used to input the impact power required to be tested by the inverter power supply; the impact configuration module 32 of the impact management unit 3 receives the historical working number signal of each branch contactor RLY1 sent by the working number statistics module 31, and the impact power input by the impact power input module 4; calculates the required The number of iodine tungsten lamps D; compare and select the historical working times signals of each iodine tungsten lamp D sent by the test device working times statistics module 31, locate and configure the required iodine tungsten lamp D and the corresponding shunt contactor RLY1; send the "close" and "open" instructions about the main contactor RLY0 and the shunt contactor RLY1 in the parallel branch 11 to the contactor control module 5; send the position information of the shunt contactor RLY1 corresponding to the located iodine tungsten lamp D to the contactor fault detection module 33; receive the fault information of the main contactor RLY0 and the shunt contactor RLY1 sent by the contactor fault detection module 33, and the position information of the shunt contactor RLY1 with fault;The receiving time control module 34 sends the time difference signal from the last use to the current use of each iodine tungsten lamp D, and when locating and configuring the corresponding number of iodine tungsten lamps D and the corresponding branch contactors RLY1, excludes the iodine tungsten lamps D and the corresponding branch contactors RLY1 whose time difference from the last use to the current use is too short; the contactor fault detection module 33 receives the working state signal of the main contactor RLY0 and all the branch contactors RLY1 sent by the contactor state detection module 2, and the position information of the branch contactor RLY1 corresponding to the iodine tungsten lamp D to be used sent by the impact configuration module 32; compares the state of the branch contactor RLY1 corresponding to the iodine tungsten lamp D to be used and the main contactor RLY0 before and after closing, and determines whether each branch contactor RLY1 corresponding to the iodine tungsten lamp D to be used and the main contactor RLY0 are faulty; and connects the branch contactor RLY1 and the main contactor RLY0 to the contactor. The fault information of RLY0 is sent to the impact configuration module 32 and the contactor fault alarm module 6; the position of the faulty branch contactor RLY1 is located, and the position information of the faulty branch contactor RLY1 is sent to the impact configuration module 32; the time control module 34 is used to record the time difference between the last use of each iodine tungsten lamp D and ...

[0017] The preferred embodiment of the anti-impact test device of the inverter power supply of the present invention has the following working process: 1) the impact power to be tested of the inverter power supply is inputted by the impact power input module 4, and the impact power is transmitted to the impact configuration module 32 of the impact management unit 3; 2) the impact configuration module 32 of the impact management unit 3 calculates the number of iodine tungsten lamps D required to be used according to the impact power inputted by the impact power input module 4, and calculates the number of historical working times of each branch contactor RLY1 sent by the working times statistics module 31 and the time from the last use to the current use of each iodine tungsten lamp D sent by the receiving time control module 34. The time difference signal used is used to locate and configure the corresponding number of iodine tungsten lamps D with the least number of historical working times and the time difference between the last use and the current use greater than a certain value, and the corresponding shunt contactor RLY1, and send a "close" instruction about the shunt contactor RLY1 with the corresponding number of historical working times and the least number of historical working times and the time difference between the last use and the current use greater than a certain value in the parallel branch 11 to the contactor control module 5; 3) The contactor control module 5 controls the shunt contactor RLY1 with the corresponding number of historical working times and the least number of historical working times and the time difference between the last use and the current use greater than a certain value in the parallel branch 11. 1 is closed; 4) the contactor state detection module 2 detects the state of the corresponding shunt contactor RLY1 before and after the "close" command is issued, and transmits the state information to the contactor fault detection module 33; 5) the contactor fault detection module 33 compares the state information of the shunt contactor RLY1 before and after the "close" command is issued, and determines whether there is a fault in the shunt contactor RLY1 corresponding to the iodine tungsten lamp D with the corresponding number of iodine tungsten lamps used this time, the least number of historical working times, and the time difference between the last use and the current use is greater than a certain value. If there is a fault in the shunt contactor RLY1 of the corresponding number and the corresponding position, There is a fault in the contactor RLY1, the position of the faulty shunt contactor RLY1 is located, and the position information and fault information of the faulty shunt contactor RLY1 are sent to the impact configuration module 32 of the impact management unit 3, and a fault signal indicating that there is a fault in the shunt contactor RLY1 among the shunt contactors RLY1 of the corresponding number and position is sent to the contactor fault alarm module 6. On the one hand, the contactor fault alarm module 6 receives the fault signal indicating that there is a fault in the shunt contactor RLY1 sent by the contactor fault detection module 33, and makes a warning response after receiving the fault signal;On the other hand, the impact configuration module 32 receives the position information and fault signal of the faulty shunt contactor RLY1 sent by the contactor fault detection module 33, and after receiving the fault signal of the faulty shunt contactor RLY1 sent by the contactor fault detection module 33, sends a "disconnect" instruction about all shunt contactors RLY1 in the parallel branch 11 to the contactor control module 5, cancels this test, repositions and configures the corresponding number of shunt contactors RLY1 with the least number of historical working times, and the time difference between the last use and the current use is greater than a certain value, and there is no fault, and sends a "shunt contactor RLY1" about the repositioned shunt contactor RLY1 in the parallel branch 11. The "close" instruction is sent to the contactor control module 5. The contactor control module 5 receives the "close" instruction and controls the relocated shunt contactor RLY1 to close. At the same time, the impact configuration module 32 also sends the position information of the corresponding number of relocated shunt contactors RLY1 to the contactor fault detection module 33. The contactor fault detection module 33 then performs fault detection on the shunt contactor RLY1 used. This is repeated until the shunt contactor RLY1 used does not have a fault and the impact configuration module 32 does not receive the fault signal about the shunt contactor RLY1 sent by the contactor fault detection module 33; 6) The impact configuration module 32 sends a fault signal about the main contactor The "close" instruction of the main contactor RLY0 is sent to the contactor control module 5, the contactor state detection module 2 detects the state of the main contactor RLY0 before and after the "close" instruction is issued, the contactor fault detection module 33 compares the states of the main contactor RLY0 before and after, and determines whether there is a fault in the main contactor RLY0. If there is a fault in the main contactor RLY0, the fault information of the main contactor RLY0 is sent to the impact configuration module 32 of the impact management unit 3 and the contactor fault alarm module 6. On the one hand, the contactor fault alarm module 6 receives the fault signal of the main contactor RLY0 sent by the contactor fault detection module 33, and after receiving the fault signal After that, a warning response is made; on the other hand, the impact configuration module 32 sends a "disconnect" instruction about the main contactor RLY0 and all the branch contactors RLY1 in the parallel branch 11 to the contactor control module 5, canceling this test. If there is no fault in the main contactor RLY0, observe the changes of the iodine tungsten lamp D used to judge the anti-impact test result of the inverter power supply, and the impact configuration module 32 sends a "disconnect" instruction about the main contactor RLY0 and all the branch contactors RLY1 in the parallel branch 11 to the contactor control module 5. The contactor control module 5 controls the main contactor RLY0 and all the branch contactors RLY1 in the parallel branch 11 to disconnect, and the test is completed. ;

[0018] In a preferred embodiment of the anti-impact testing device for the inverter power supply of the present invention, for the iodine tungsten lamps D with the same number of uses, the impact configuration module 32 of the impact management unit 3 can distinguish the iodine tungsten lamps D with the same number of uses according to their positions and numbers when locating and configuring the iodine tungsten lamps D to be used this time.

[0019] In a preferred embodiment of the anti-impact test device of the inverter power supply of the present invention, the contactor state detection module 2 constantly detects the working state of the main contactor RLY0 and all the branch contactors RLY1, and sends the working state signals of the main contactor RLY0 and all the branch contactors RLY1 to the test device working number statistics module 31. The test device working number statistics module 31 of the impact management unit 3 receives the signal transmitted by the contactor state detection module 2, counts the historical working times of each branch contactor RLY1, and sends the historical working number signal to the impact configuration module 32. The working times of each branch contactor RLY1 and the iodine tungsten lamp D are counted after the successful completion of this impact task. If the failure of the branch contactor RLY1 and the main contactor RLY0 is detected, the impact task is unsuccessful, and the working times of each branch contactor RLY1 and the iodine tungsten lamp D under this operation are not accumulated.

[0020] In a preferred embodiment of the anti-impact testing device for the inverter power supply of the present invention, the setting of the contactor fault alarm module 6 and the contactor fault detection module 33 effectively avoids the influence of the fault of the main contactor RLY0 and the branch contactor RLY1 on the test results, thereby making the test accuracy higher.

[0021] In a preferred embodiment of the impact resistance testing device of the inverter power supply of the present invention, the time control module 34 records the time difference between the last use and the current use of each iodine tungsten lamp D, so that when the impact configuration module 32 locates and configures the corresponding number of iodine tungsten lamps D and the corresponding shunt contactors RLY1 this time, the iodine tungsten lamps D and the corresponding shunt contactors RLY1 whose time difference between the last use and the current use is too short are excluded, thereby ensuring that the iodine tungsten lamps D participating in the task previously have sufficient time to dissipate heat, avoiding the use of the iodine tungsten lamps D at high temperatures, thereby extending the service life of the iodine tungsten lamps D.

[0022] The impact resistance testing device of the inverter power supply of the present invention can be a motor, a fan or various lamps. In a preferred embodiment of the present invention, an iodine tungsten lamp is used as the test device. The iodine tungsten lamp is powered on to emit light, and the phenomenon of reflecting the test result is intuitive. In addition, because the impact power of the inverter power supply is generally large, and the iodine tungsten lamp is also a high-power lamp among lamps, in the impact resistance test of the inverter power supply, the number of iodine tungsten lamps used in each test is relatively small, and the configuration is more convenient.

[0023] The invention discloses an anti-impact test device for an inverter power supply. The contactor state detection module 2 is a circuit structure based on a digital encoder. The impact management unit 3 can be a DSP module based on a DSP chip or an MCU module based on an MCU chip. When the MCU module is used, the MCU chip can be a STC12C5A60S2 / AD / PWM series single-chip microcomputer. The STC12C5A60S2 / AD / PWM series single-chip microcomputer is a single-clock / machine cycle single-chip microcomputer produced by Hongjing Technology Co., Ltd. It is a new generation of 8051 single-chip microcomputer with high speed / low power consumption / super strong anti-interference. The instruction code is fully compatible with the traditional 8051. The MAX810 dedicated reset circuit, 2-way PWM, and 8-way high-speed 10-bit A / D conversion are integrated internally. The impact power input module 4 can be a mechanical key module or a touch key module. The contactor control module 5 is a circuit structure for powering on or off the control coils of the branch contactor RLY1 and the main contactor RLY0. The contactor fault alarm module 6 can be an LED fault lamp or a buzzer.

[0024] The impact resistance testing device of the inverter power supply of the present invention has the following advantages: 1) after the impact power to be tested of the inverter power supply is input through the impact power input module 4, the impact configuration module 32 of the impact management unit 3 calculates the number of test devices to be used, which avoids manual calculation by the operator, and is more accurate in calculating the number of test devices without errors; 2) after the impact configuration module 32 of the impact management unit 3 calculates the number of test devices to be used, it also selects and configures the corresponding number of test devices. During configuration, the test device with the least number of historical working times before this test is selected and located for use in this test, which balances the number of times the test devices in all parallel branches 11 are used, ensuring that the utilization rate of each test device is consistent, and avoiding damage to some test devices due to excessive use; 3) replacing the original manual control with intelligent cluster control improves production efficiency, reduces the failure probability of the test device, and improves the accuracy of the test.

Claims

1. An anti-impact test device for an inverter power supply, comprising a main circuit contactor and a test branch connected in series between output lines of the inverter power supply, wherein the test branch comprises a plurality of parallel branches connected in parallel, each parallel branch comprises a branch contactor and a test device connected in series, and the change between the non-working state and the working state of the test device is visible to the naked eye; characterized in that: The anti-shock test device of the inverter power supply also includes a contactor state detection module, a shock management unit, a shock power input module and a contactor control module. The shock management unit includes a test device working times statistics module and a shock configuration module. The main contactor and all branch contactors are connected to the contactor state detection module in communication. The contactor state detection module is connected to the test device working times statistics module, the shock configuration module and the contactor control module in sequence. The contactor control module is connected to the main contactor and all branch contactors in communication. The shock configuration module is also connected to the shock power input module in communication. The contactor state detection module detects the working status of the main contactor and all branch contactors at all times, and sends the working status signals of the main contactor and all branch contactors to the tester. The test device working times statistics module of the impact management unit receives the working status signal transmitted by the contactor status detection module, counts the historical working times of all the branch contactors, and sends the historical working times signal to the impact configuration module; the impact power input module is used to input the impact power required to be tested by the inverter power supply; the impact configuration module of the impact management unit receives the impact power input by the impact power input module; calculates the number of test devices required to be used; compares and selects the historical working times signals of each test device sent by the test device working times statistics module, locates and configures the test devices required to be used and the corresponding branch contactors; sends the "close" and "open" instructions about the main contactor and the branch contactors in the parallel branch to the contactor control module; The contactor control module receives the "close" and "open" instructions about the main contactor and the branch contactor in the parallel branch sent by the impact configuration module, and controls the state of the main contactor and the branch contactor in the parallel branch; the anti-impact test device of the inverter power supply also includes a contactor fault alarm module, and the impact management unit also includes a contactor fault detection module. The contactor fault detection module is respectively connected to the contactor state detection module, the impact configuration module, and the contactor fault alarm module, wherein: the contactor state detection module also sends the working state signals of the main contactor and all the branch contactors detected from time to time to the contactor state detection module. to the contactor fault detection module; the impact configuration module of the impact management unit also sends the position information of the shunt contactor corresponding to the test device to be used that is located and configured to the contactor fault detection module; receives the fault information of the main contactor and the shunt contactor that are faulty, and the position information of the shunt contactor with fault sent by the contactor fault detection module; the contactor fault detection module receives the working state signals of the main contactor and all the shunt contactors sent by the contactor state detection module, and the position information of the shunt contactor corresponding to the test device to be used that is located and configured sent by the impact configuration module. information; compare the states of the shunt contactors and the main contactors corresponding to the test devices to be used before and after closing, and determine whether the shunt contactors and the main contactors corresponding to the test devices to be used are faulty; send the fault information of the shunt contactors and the main contactors to the impact configuration module and the contactor fault alarm module; locate the position of the shunt contactor with fault, and send the position information of the shunt contactor with fault to the impact configuration module; the contactor fault alarm module receives the fault signal of the shunt contactors and the main contactors sent by the contactor fault detection module, and Make a warning response; the impact management unit also includes a time control module that is communicatively connected to the impact configuration module, wherein: the time control module is used to record the time difference between the last use of each test device and the time to be used this time, and send the time difference between the last use of each test device and the time to be used this time to the impact configuration module; the impact configuration module also receives the time difference between the last use of each test device and the time to be used this time sent by the time control module, and when positioning and configuring the corresponding number of test devices and the corresponding shunt contactors this time, excludes the test devices and the corresponding shunt contactors whose time difference between the last use and the time to be used this time is too short.

2. The anti-shock test device for an inverter power supply according to claim 1, characterized in that: All test devices in the parallel branch are iodine tungsten lamps.

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