Equipment and method for detecting electrical performance of air conditioner

Abstract

The invention discloses an air conditioner electrical performance detection device and method, and belongs to the technical field of performance detection.The air conditioner electrical performance detection device comprises a conveying mechanism, a detection mechanism and a scanning mechanism, and the conveying mechanism is configured to convey products in the first direction; the detection mechanism comprises a multi-axis moving assembly, a visual detection assembly, a connector switching assembly and a function detection assembly, the visual detection assembly is configured to be used for detecting the position of a port of a product, and the multi-axis moving assembly is configured to move the connector switching assembly according to the position of the port, so that the connector switching assembly is in butt joint with the port of the product; the connector switching assembly is electrically connected with the function detection assembly, the function detection assembly is configured to be used for detecting the electrical performance of the product, and the connector switching assembly is used for switching different connectors to be in butt joint with the ports; the scanning mechanism is configured to be used for obtaining the port type of the product, and the efficiency and diversity of air conditioner electrical performance detection are improved.

Description

Technical Field

[0001] This invention relates to the field of performance testing technology, and in particular to testing equipment and methods for testing the electrical performance of air conditioners. Background Technology

[0002] After the outdoor unit of the air conditioner is assembled, a series of verifications of its electrical safety performance are required, such as whether the key parameters of the circuit system, such as withstand voltage, impedance characteristics, operating current or grounding resistance, meet the standards.

[0003] In related technologies, the commonly used detection methods still rely on testing personnel operating specialized testing tools, which is time-consuming and the overall work efficiency needs to be improved. Summary of the Invention

[0004] The present invention aims to at least solve the technical problems existing in related technologies. To this end, the present invention proposes an air conditioner electrical performance testing device, which is beneficial to improving the efficiency and versatility of air conditioner electrical performance testing.

[0005] The present invention also proposes a detection method.

[0006] An air conditioning electrical performance testing device according to a first aspect of the present invention includes: a conveying mechanism configured to convey a product along a first direction; a testing mechanism adjacent to the conveying mechanism, the testing mechanism including a multi-axis moving component, a vision inspection component, a connector switching component, and a function testing component, the multi-axis moving component being connected to the vision inspection component and the connector switching component, the vision inspection component being configured to detect the position of a port of the product, the multi-axis moving component being configured to move the connector switching component according to the position of the port, such that the connector switching component mates with a port of the product, the connector switching component being electrically connected to the function testing component, the function testing component being configured to perform electrical performance testing on the product, the connector switching component including a switching member and a plurality of connectors, the switching member being connected to the plurality of connectors for switching different connectors to mate with the port; and a scanning mechanism configured to acquire the port type of the product, the switching member being configured to switch connectors according to the port type acquired by the scanning mechanism.

[0007] The air conditioning electrical performance testing equipment according to embodiments of the present invention has at least the following beneficial effects: the conveying mechanism is configured to convey products along a first direction; during product conveying, the scanning mechanism is configured to acquire the port type of the product; the switching component of the connector switching assembly is configured to switch connectors according to the port type acquired by the scanning mechanism, so as to select a connector corresponding to the product. This improves the applicability of the air conditioning electrical performance testing equipment to different types of products and reduces the inconvenience of manually adjusting the connector type according to different product types. The testing mechanism includes a multi-axis moving assembly, a vision inspection assembly, a connector switching assembly, and a functional testing assembly. When the product is conveyed to a preset position along the conveying mechanism, the vision inspection assembly is configured to detect the port position of the product. Then, the multi-axis moving assembly is configured to move the connector switching assembly according to the port position, so that the selected connector is connected to the port of the product. The connector switching assembly is electrically connected to the functional testing assembly, and the functional testing assembly is configured to perform electrical performance testing on the product. That is, the air conditioning electrical performance testing equipment can automatically perform multiple electrical performance tests on the air conditioner, which is beneficial to improving the efficiency and diversity of air conditioning electrical performance testing.

[0008] According to some embodiments of the present invention, the air conditioning electrical performance testing equipment further includes an alignment mechanism adjacent to the conveying mechanism, the alignment mechanism being configured to drive a product located on the conveying mechanism to move along a second direction, the second direction being perpendicular to the first direction.

[0009] According to some embodiments of the invention, the alignment mechanism includes two opposing linear push rods configured to move the product along a second direction.

[0010] According to some embodiments of the present invention, the switching component includes a rotary motor, a wheel, and multiple connecting fixtures. The rotary motor is used to drive the wheel to rotate in the forward or reverse direction. The multiple connecting fixtures are arranged at circumferential intervals on the circumferential edge of the wheel, and each connecting fixture is connected to each connector in a one-to-one correspondence.

[0011] According to some embodiments of the present invention, the visual inspection component is connected to the center of the wheel.

[0012] The detection method of the second aspect of the present invention is applied to an air conditioner electrical performance testing device as described in any of the first aspects, and the detection method includes:

[0013] Control the conveying mechanism to convey products along a first direction; The scanning mechanism is controlled to obtain the port type of the product, and the switching component is controlled to switch the corresponding connector according to the port type. Once the product moves to the preset position, the vision inspection component is controlled to obtain the position of the product's port. Based on the position of the port, the multi-axis moving component is controlled to drive the connector switching component to connect with the port. Based on testing requirements, the control function testing component performs electrical performance testing on the product.

[0014] According to some embodiments of the present invention, the control function testing component performs electrical performance testing on a product based on testing requirements, including: A functional testing component is constructed based on a programmable AC power supply, a four-quadrant regenerative electronic load, and a data acquisition module; Control the operation of programmable AC power supplies and four-quadrant regenerative electronic loads to achieve dynamic stress on products, scenario testing, or scenario switching; The control data acquisition module acquires change data of the product during dynamic pressure application, scenario testing, or scenario transition, and determines the electrical performance of the product based on the change data.

[0015] According to some embodiments of the present invention, the change data includes current and non-stationary transient signals; the control data acquisition module acquires change data of the product under dynamic pressure, scenario testing, or scenario transition, and determines the electrical performance of the product based on the change data, including: Perform FFT on the current during steady-state operation to calculate the harmonic content at a preset order, and compare the harmonic content with a preset standard. Wavelet transform is applied to non-stationary transient signals to pinpoint the exact time point and frequency components where the anomaly occurred.

[0016] According to some embodiments of the present invention, the control data acquisition module acquires change data of the product under dynamic pressure, scenario testing, or scenario transition, and determines the electrical performance of the product based on the change data, including: Perform standard tests on the product, obtain the product's switching waveform and harmonic frequency, and save them as a health baseline; In electrical performance testing, the control data acquisition module acquires the switching transients of the product, calculates waveform similarity or characteristic parameters based on the switching transients, and compares them with a healthy baseline.

[0017] According to some embodiments of the present invention, determining the electrical performance of a product based on change data includes: If the calculated waveform overshoots or is too large compared to the healthy baseline, the buffer circuit of product (600) is deemed to be at risk of failure. Compared to the healthy baseline, if the switching frequency of the switching transient exhibits an abnormal sideband, the control loop of the product (600) is determined to be unstable.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of an air conditioner electrical performance testing device according to an embodiment of the present invention; Figure 2 This is a top view of an air conditioning electrical performance testing device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an air conditioning electrical performance testing device according to an embodiment of the present invention from another perspective; Figure 4 This is a schematic diagram of the multi-axis moving component, vision inspection component, and connector switching component of an air conditioning electrical performance testing device according to an embodiment of the present invention. Figure 5 This is a flowchart of a detection method according to an embodiment of the present invention; Figure 6 This is a flowchart illustrating the control function detection component of a detection method according to an embodiment of the present invention performing electrical performance testing on a product. Figure 7 This is a flowchart illustrating the detection method of an embodiment of the present invention, which calculates or compares the current during steady-state operation and the non-stationary transient signal, and compares it with a healthy baseline. Figure 8 This is a flowchart illustrating a detection method according to an embodiment of the present invention for determining the electrical performance of a product based on changing data.

[0020] Icon labels: 100. Conveying mechanism; 200. Multi-axis moving assembly; 300. Visual inspection components; 400. Connector switching assembly; 410. Rotary motor; 420. Wheel; 430. Connecting fixture; 500. Alignment mechanism; 600. Products. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] Reference Figures 1 to 8 As shown, an embodiment of the air conditioning electrical performance testing equipment of the present invention includes: a conveying mechanism 100, a testing mechanism, and a scanning mechanism.

[0026] Reference Figure 1 , Figure 2 and Figure 3 As shown, the conveying mechanism 100 is configured to convey the product 600 along a first direction, which will be described below as a back-to-foreign direction. Specifically, the conveying mechanism 100 can be a roller conveying mechanism, in which the product 600 is placed on multiple rollers arranged in a back-to-foreign direction, and the product 600 can be automatically conveyed from back to front by rotating the rollers.

[0027] Reference Figure 1 , Figure 2 and Figure 3 As shown, the scanning mechanism is located adjacent to the conveying mechanism 100 and adjacent to the first conveying position of the conveying mechanism 100. When the product 600 is conveyed to the first conveying position, the scanning mechanism can scan the QR code or barcode on the outer surface of the product 600 to obtain the port type or port specification of the product 600.

[0028] Reference Figure 1 , Figure 2 and Figure 3 As shown, the switching component of the connector switching assembly 400 is configured to switch the connector according to the port type obtained by the scanning mechanism, so as to select the connector corresponding to the product 600. This can improve the applicability of the air conditioning electrical performance testing equipment to different types of products 600 and reduce the inconvenience of manually adjusting the connector type due to different product types 600.

[0029] Reference Figure 1 , Figure 2 and Figure 3As shown, the detection component is adjacent to the conveying mechanism 100 and adjacent to the second conveying position of the conveying mechanism 100. The preset position is the second conveying position. When the product 600 is conveyed to the second conveying position, the vision detection component 300 is configured to detect the position of the port of the product 600. The multi-axis moving component 200 is configured to move the connector switching component 400 according to the position of the port, so that the connector selected by the connector switching component 400 is connected to the port of the product 600.

[0030] Reference Figure 1 , Figure 2 and Figure 3 As shown, the connector switching assembly 400 is electrically connected to the function testing assembly, which is configured to perform electrical performance testing on the product 600. That is, the air conditioner electrical performance testing equipment can automatically perform multiple electrical performance tests on the air conditioner, which is beneficial to improving the efficiency and diversity of the testing of the air conditioner's electrical performance.

[0031] It should be noted that the principle of the detection port position of the visual inspection component 300 is a conventional technical method in this field, and will not be elaborated here.

[0032] Reference Figure 1 , Figure 2 and Figure 3 As shown, it is understood that the air conditioning electrical performance testing equipment also includes an alignment mechanism 500 adjacent to the conveying mechanism 100, the alignment mechanism 500 being configured to drive the product 600 located on the conveying mechanism 100 to move in a second direction, the second direction being perpendicular to the first direction.

[0033] Reference Figure 1 , Figure 2 and Figure 3 As shown, the alignment mechanism 500 includes two opposing linear push rods configured to move the product 600 along a second direction.

[0034] Reference Figure 1 , Figure 2 and Figure 3 As shown, specifically, the following explanation takes the second direction as the left and right direction as an example. When the product 600 is conveyed to the side of the alignment mechanism 500 along the first direction, the linear push rod can extend and abut against the product 600, thereby adjusting the left and right position of the product 600 on the conveying mechanism 100, thereby realizing the positioning of the product 600 in the left and right direction.

[0035] Reference Figure 1 , Figure 2 and Figure 3 As shown, the linear actuator can be an electric actuator, a pneumatic actuator, or a hydraulic actuator, etc., which are linear drive mechanisms.

[0036] It should be understood that in some other embodiments, the alignment mechanism 500 also includes two guide plates disposed on the conveying mechanism 100. The guide plates are arranged in a left-right configuration, and a conveying channel is constructed between the two guide plates. The spacing of the conveying channel in the left-right direction has a guide section that gradually narrows from back to front. When the product 600 enters the guide section along the conveying mechanism 100, under the guidance of the guide plates, the position of the product 600 in the left-right direction can be gradually adjusted, thereby realizing the positioning of the product 600 in the left-right direction.

[0037] Reference Figure 1 , Figure 3 and Figure 4 As shown, it can be understood that in this embodiment, the switching component includes a rotary motor 410, a wheel 420, and a plurality of connecting fixtures 430. The rotary motor 410 is used to drive the wheel 420 to rotate in the forward or reverse direction. The plurality of connecting fixtures 430 are arranged in a circular interval on the circumferential edge of the wheel 420, and each connecting fixture 430 is connected to each connector in a corresponding manner.

[0038] Reference Figure 1 , Figure 3 and Figure 4 As shown, specifically, the fixed end of the rotary motor 410 is connected to the multi-axis moving mechanism, while the output end of the rotary motor 410 is connected to the wheel 420. Multiple connecting fixtures 430 are arranged in a circle and are all connected to the circumferential edge of the wheel 420. The connecting fixtures 430 can realize the detachable connection of the joint, thereby realizing the connection with various joints.

[0039] Reference Figure 1 , Figure 3 and Figure 4 As shown, the switching component of the connector switching assembly 400 is configured to switch the connector according to the port type obtained by the scanning mechanism. Specifically, the rotary motor 410 can drive the wheel 420 to rotate, thereby putting the connector of the corresponding port type in the docking position to achieve docking with the port of the product 600. This can improve the applicability of the air conditioning electrical performance testing equipment to different types of products 600 and reduce the inconvenience of manually adjusting the connector type due to different product types 600.

[0040] Reference Figure 1 , Figure 3 and Figure 4 As shown, the vision inspection component 300 is connected to the middle of the wheel 420. Specifically, this reduces the displacement of the vision inspection component 300 caused by the rotation of the wheel 420, and maintains the accuracy of the port position detected by the vision inspection component 300.

[0041] Reference Figure 1 , Figure 3 and Figure 4As shown, it should be noted that the operating principles and structures of the visual inspection mechanism, scanning mechanism, and multi-axis moving mechanism are conventional technical means in this field and will not be elaborated here.

[0042] Reference Figures 5 to 8 As shown, a detection method according to an embodiment of the present invention is applied to an air conditioner electrical performance testing device as described in any of the above embodiments; the detection method includes the following steps: Step S100: Control the conveying mechanism 100 to convey the product 600 along the first direction; Step S200: Control the scanning mechanism to obtain the port type of product 600, and control the switching component to switch the corresponding connector according to the port type; Step S300: After the product 600 moves to the preset position, the vision detection component 300 is controlled to obtain the position of the port of the product 600, and the multi-axis moving component 200 is controlled to drive the connector switching component 400 to connect with the port according to the position of the port. In step S400, according to the testing requirements, the control function testing component performs electrical performance testing on product 600.

[0043] Reference Figure 1 , Figure 3 and Figure 5 As shown, in step S100, the conveying mechanism 100 is configured to convey the product 600 along a first direction, which will be described below as the first direction from back to front. Specifically, the conveying mechanism 100 can be a roller conveying mechanism 100, which places the product 600 on multiple rollers arranged in the front-back direction, thereby realizing the automated conveying of the product 600 from back to front.

[0044] Reference Figure 1 , Figure 3 and Figure 5 As shown, in step S200, the scanning mechanism is located adjacent to the conveying mechanism 100 and adjacent to the first conveying position of the conveying mechanism 100. When the product 600 is conveyed to the first conveying position, the scanning mechanism can scan the QR code or barcode on the outer surface of the product 600 to obtain the port type or port specification of the product 600.

[0045] Reference Figure 1 , Figure 3 and Figure 5 As shown, the switching component of the connector switching assembly 400 is configured to switch the connector according to the port type obtained by the scanning mechanism, so as to select the connector corresponding to the product 600. This can improve the applicability of the air conditioning electrical performance testing equipment to different types of products 600 and reduce the inconvenience of manually adjusting the connector type due to different product types 600.

[0046] Reference Figure 1 , Figure 3 and Figure 5 As shown, in step S300, the detection component is adjacent to the conveying mechanism 100 and adjacent to the second conveying position of the conveying mechanism 100. The preset position is the second conveying position. When the product 600 is conveyed to the second conveying position, the vision detection component 300 is configured to detect the position of the port of the product 600. The multi-axis moving component 200 is configured to move the connector switching component 400 according to the position of the port, so that the connector selected by the connector switching component 400 is connected to the port of the product 600.

[0047] Reference Figure 1 , Figure 3 and Figure 5 As shown, the connector switching assembly 400 is electrically connected to the function testing assembly, which is configured to perform electrical performance testing on the product 600. This testing method can automatically perform various electrical performance tests on the air conditioner, which is beneficial to improving the efficiency and diversity of testing the electrical performance of the air conditioner.

[0048] Reference Figure 1 , Figure 3 and Figure 5 As shown, in step S400, the detection method can control the functional detection component to perform electrical performance testing on the product 600 according to the detection requirements.

[0049] Reference Figure 1 , Figure 3 and Figure 6 As shown, it can be understood that in step S400 of this testing method, the control function testing component performs electrical performance testing on product 600 according to the testing requirements, including the following steps: Step S410: Construct a functional detection component based on a programmable AC power supply, a four-quadrant regenerative electronic load, and a data acquisition module; Step S420: Control the operation of the programmable AC power supply and the four-quadrant regenerative electronic load to achieve dynamic stress, scenario testing or scenario switching on product 600 (600); Step S430: Control the data acquisition module to acquire the change data of product 600 during dynamic pressure, scenario testing or scenario transition, and determine the electrical performance of product 600 based on the change data.

[0050] Reference Figure 1 , Figure 3 and Figure 6 As shown, in step S410, the high-precision programmable AC power supply can be the Chroma61500 series or the Keysight APS series, which can simulate voltage fluctuations (such as ±20% gradual changes, sudden rises and falls), frequency changes, and waveform distortion (harmonic injection) of the power grid.

[0051] Reference Figure 1 , Figure 3 and Figure 6 As shown, the four-quadrant regenerative electronic load can be a regenerative load from the Chroma 63800 series or NF Instruments. It not only consumes electrical energy, but also feeds the absorbed energy back to the grid, simulating the dynamic characteristics of loads such as compressors and fans, and is highly efficient and energy-saving.

[0052] Reference Figure 1 , Figure 3 and Figure 6 As shown, the data acquisition system can use a high-precision power analyzer (such as the Yokogawa WT series power analyzer) and a high-speed oscilloscope (bandwidth ≥ 100MHz) to simultaneously acquire parameters such as voltage, current, power, and power factor.

[0053] Reference Figure 1 , Figure 3 and Figure 6 As shown, the outdoor unit of the air conditioner does not need to be connected to the actual indoor heat exchanger. The power supply lines of the compressor, fan, and four-way valve of the outdoor unit are all connected to the input terminal of the electronic load. The programmable AC power supply can power the entire air conditioner unit.

[0054] Reference Figure 1 , Figure 3 and Figure 6 As shown, in step S420, when the test starts, the main control computer (or cloud platform edge node) simultaneously sends a start command to the programmable power supply and electronic load to achieve dynamic stress, scenario testing or scenario switching of product 600.

[0055] Reference Figure 1 , Figure 3 and Figure 6 As shown, dynamic pressure is applied: for example, the power supply simulates a voltage drop to 180V while the load script executes a model of full-frequency compressor startup. The data acquisition module can collect data on the air conditioner's response under this dual pressure: whether the controller restarts, whether the current exceeds the limit, and how the power factor changes.

[0056] Reference Figure 1 , Figure 3 and Figure 6 As shown, scenario-based testing: quickly switching test scenarios, such as "tropical afternoon thunderstorm scenario" (voltage drop + rapid load switching) and "cold region low temperature start-up scenario" (low voltage + high start-up torque requirement), can complete tests that previously required hours of environmental simulation in just a few minutes.

[0057] Reference Figure 1 , Figure 3 and Figure 6As shown, this detection method uses a programmable AC power supply and an electronic load to simulate real-time changing load characteristics (such as instantaneous start-stop of the compressor, fan speed regulation, and condenser temperature fluctuations). It can reproduce the electrical stress of actual working conditions at the circuit level without building a complex simulation environment.

[0058] Reference Figure 1 , Figure 3 and Figure 7 As shown, it can be understood that the changing data includes current and non-stationary transient signals; in step S430, the detection method controls the data acquisition module to acquire the changing data of product 600 under dynamic pressure, scenario testing, or scenario transition, and determines the electrical performance of product 600 based on the changing data, including the following steps: Step S431: Perform FFT on the current during steady-state operation, calculate the harmonic content of the preset order, and compare the harmonic content with the preset standard. Step S432: Perform wavelet transform on the non-stationary transient signal to locate the exact time point and frequency component of the anomaly.

[0059] Reference Figure 1 , Figure 3 and Figure 7 As shown, this detection method can achieve joint time-frequency domain analysis: Reference Figure 1 , Figure 3 and Figure 7 As shown, FFT analysis involves performing an FFT on the current during steady-state operation to accurately calculate the content of harmonics from the 2nd to the 40th order. This is then compared with standards such as IEC 61000-3-2 to directly quantify the total harmonic distortion rate and the amplitude of each specific harmonic (e.g., the 3rd, 5th, and 7th orders). A precise comparison with electromagnetic compatibility standards such as IEC 61000-3-2 is then conducted to generate a compliance report, which is a mandatory requirement for product market access under the IEC 600 standard.

[0060] Reference Figure 1 , Figure 3 and Figure 7 As shown, wavelet analysis: Wavelet transform is applied to non-stationary transient signals (such as switching transients and arc noise) to pinpoint the exact time point and frequency components of the anomaly, distinguishing between normal switching noise and abnormal parasitic oscillations. This allows for the precise location of the exact time point and frequency components of the anomaly, such as switching transients and arc noise.

[0061] Reference Figure 1 , Figure 3 and Figure 7 As shown, it can be understood that in step S430 of this detection method, the control data acquisition module acquires the change data of product 600 under dynamic pressure, scenario testing, or scenario transition, and determines the electrical performance of product 600 based on the change data, including the following steps: Step S433: Perform standard tests on product 600, obtain the switching waveform and harmonic frequency of product 600, and save it as a health baseline; In step S434, during electrical performance testing, the control data acquisition module acquires the switching transient of product 600, calculates waveform similarity or characteristic parameters based on the switching transient, and compares them with a healthy baseline.

[0062] Reference Figure 1 , Figure 3 and Figure 7 As shown, in steps S433 and S434, the detection method can save the switching waveform and harmonic spectrum of an air conditioner as a health baseline through standard testing.

[0063] Reference Figure 1 , Figure 3 and Figure 7 As shown, in electrical performance testing, the data acquisition module captures the switching transients of each air conditioner and compares them with the baseline using algorithms (such as calculating waveform similarity or characteristic parameters).

[0064] Reference Figure 1 , Figure 3 and Figure 7 As shown, a healthy baseline not only includes an average value, but more importantly, it defines a benchmark for normal fluctuations. For example: Reference Figure 1 , Figure 3 and Figure 7 As shown, when the compressor starts, the peak current surge may fluctuate between 38A and 42A (depending on the instantaneous voltage of the power grid), which is a reasonable dynamic range.

[0065] Reference Figure 1 , Figure 3 and Figure 7 As shown, the noise spectrum at the inverter's switching frequency has a specific envelope shape and energy distribution. The health baseline describes the reasonable boundaries of all these dynamic behaviors. The health baseline serves as the cornerstone for subsequent electrical performance assessments.

[0066] Reference Figure 1 , Figure 3 and Figure 8 As shown, it can be understood that in step S430 of this detection method, the control data acquisition module acquires the change data of product 600 under dynamic pressure, scenario testing, or scenario transition, and determines the electrical performance of product 600 based on the change data, including the following steps: Step S435: If the calculated waveform overshoots or is too large compared to the healthy baseline, it is determined that the buffer circuit of product 600 is at risk of failure. Step S436: If an abnormal sideband appears in the switching frequency of the switching transient compared to the healthy baseline, the control loop of product 600 is determined to be unstable.

[0067] Reference Figure 1 , Figure 3 and Figure 8 As shown, waveform overshoot or excessive amplitude may indicate buffer circuit failure. Abnormal sidebands at the switching frequency may indicate control loop instability, thus enabling the prediction of potential faults before aging.

[0068] Reference Figure 1 , Figure 3 and Figure 8 As shown, this testing method can achieve the testing, monitoring, and evaluation of product 600, effectively improving the efficiency and versatility of air conditioner electrical performance testing. Characteristic parameters include waveform and switching frequency.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An air conditioner electrical performance testing device, characterized in that, include: The conveying mechanism (100) is configured to convey the product (600) along a first direction; An inspection mechanism is disposed adjacent to the conveying mechanism (100). The inspection mechanism includes a multi-axis moving assembly (200), a vision inspection assembly (300), a connector switching assembly (400), and a functional inspection assembly. The multi-axis moving assembly (200) is connected to the vision inspection assembly (300) and the connector switching assembly (400). The vision inspection assembly (300) is configured to detect the position of the port of the product (600). The multi-axis moving assembly (200) is configured to move the connector switching assembly (400) according to the position of the port, so that the connector switching assembly (400) docks with the port of the product (600). The connector switching assembly (400) is electrically connected to the functional inspection assembly, which is configured to perform electrical performance testing on the product (600). The connector switching assembly (400) includes a switching member and a plurality of connectors. The switching member is connected to the plurality of connectors to switch different connectors to dock with the port. A scanning mechanism is configured to acquire the port type of the product (600), and the switching member is configured to switch the connector according to the port type acquired by the scanning mechanism.

2. The air conditioning electrical performance testing equipment according to claim 1, characterized in that, It also includes an alignment mechanism (500) adjacent to the conveying mechanism (100), the alignment mechanism (500) being configured to drive the product (600) located on the conveying mechanism (100) to move along a second direction perpendicular to the first direction.

3. The air conditioning electrical performance testing equipment according to claim 2, characterized in that, The alignment mechanism (500) includes two opposing linear push rods configured to move the product (600) along a second direction.

4. The air conditioning electrical performance testing equipment according to claim 1, characterized in that, The switching component includes a rotary motor (410), a wheel (420), and a plurality of connecting fixtures (430). The rotary motor (410) is used to drive the wheel (420) to rotate in the forward or reverse direction. The plurality of connecting fixtures (430) are arranged in a circular interval on the circumferential edge of the wheel (420), and each connecting fixture (430) is connected to each of the connectors in a one-to-one correspondence.

5. The air conditioning electrical performance testing equipment according to claim 4, characterized in that, The visual inspection component (300) is connected to the middle of the wheel (420).

6. The detection method, characterized in that, The testing method, applied to the air conditioning electrical performance testing equipment as described in any one of claims 1 to 5, comprises: Control the conveying mechanism (100) to convey the product (600) along the first direction; The scanning mechanism is controlled to acquire the port type of the product (600), and the switching component is controlled to switch the corresponding connector according to the port type; When the product (600) moves to a preset position, the vision detection component (300) is controlled to obtain the position of the port of the product (600), and the multi-axis movement component (200) is controlled to drive the connector of the connector switching component (400) to dock with the port according to the position of the port; According to the testing requirements, the functional testing component is controlled to perform electrical performance testing on the product (600).

7. The detection method according to claim 6, characterized in that, The step of controlling the functional testing component to perform electrical performance testing on the product (600) according to testing requirements includes: The functional detection component is constructed based on a programmable AC power supply, a four-quadrant regenerative electronic load, and a data acquisition module; Control the operation of the programmable AC power supply and the four-quadrant regenerative electronic load to achieve dynamic stress, scenario testing or scenario switching on the product (600); The data acquisition module is controlled to acquire the change data of the product (600) during the dynamic pressure, the scenario test, or the scenario transition, and the electrical performance of the product (600) is determined based on the change data.

8. The detection method according to claim 7, characterized in that, The change data includes current and non-stationary transient signals; the control of the data acquisition module to acquire the change data of the product (600) during the dynamic pressure application, the scenario test, or the scenario transition, and to determine the electrical performance of the product (600) based on the change data, including: Perform an FFT on the current during the steady-state operation phase to calculate the harmonic content at a preset number of times, and compare the harmonic content with a preset standard; Wavelet transform is performed on the non-stationary transient signal to pinpoint the exact time point and frequency component where the anomaly occurred.

9. The detection method according to claim 7, characterized in that, The control of the data acquisition module to acquire change data of the product (600) during the dynamic pressure application, the scenario test, or the scenario transition, and the determination of the electrical performance of the product (600) based on the change data, includes: The product (600) is subjected to standard tests to obtain the switching waveform and harmonic frequency of the product (600) and save them as a health baseline; In the electrical performance test, the data acquisition module is controlled to acquire the switching transient of the product (600), and the waveform similarity or characteristic parameters are calculated based on the switching transient and compared with the health baseline.

10. The detection method according to claim 9, characterized in that, The determination of the electrical performance of the product (600) based on the change data includes: If the calculated waveform is overshooted or too large compared to the health baseline, the buffer circuit of the product (600) is determined to be at risk of failure. Compared to the healthy baseline, if the switching frequency of the switching transient exhibits an abnormal sideband, the control loop of the product (600) is determined to be unstable.

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