A shielding test box for new energy vehicle electromagnetic compatibility detection

Abstract

The application discloses a shielding test box for new energy vehicle electromagnetic compatibility detection, and belongs to the technical field of new energy sources, which comprises a test box base, a movable groove is arranged on one side of the test box base, the movable grooves are symmetrically arranged on both sides of the test box base, movable ears are movably connected inside the movable grooves, a rotating groove is arranged on one side of the test box base, the rotating grooves are symmetrically arranged on both sides, the rotating grooves penetrate the movable grooves, and rotating shafts are movably connected inside the rotating grooves. The movable ears and the rotating shafts are driven by the control seat, the protective wall is driven to form a closed box body, external electromagnetic interference is effectively isolated, and internal signal leakage is prevented. The built-in electromagnetic transmitter emits standard controllable electromagnetic signals, the electromagnetic receiver accurately collects signals, the filter filters noise, a closed-loop system from emission to processing is constructed, an interference-free environment is created for detection, and the accuracy and reliability of new energy vehicle electromagnetic compatibility detection data are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to a shielded test box for electromagnetic compatibility testing of new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the integration of core components such as automotive electronic control systems and power drive systems is constantly improving. Electromagnetic compatibility (EMC) has become a key indicator for measuring the performance and safety of new energy vehicles. EMC testing can verify the operational stability of vehicle components in complex electromagnetic environments and whether they will cause electromagnetic interference to surrounding electronic equipment. Therefore, the research and development and application of related testing equipment are becoming increasingly important. As the core device for EMC testing, the shielded test box's main function is to construct a closed electromagnetic shielding space, providing a test environment free from external interference, which is fundamental to ensuring the validity of test results.

[0003] Currently available shielded test boxes for electromagnetic compatibility testing of new energy vehicles generally suffer from poor shielding performance. Some devices have insufficient sealing of the protective structure, which can easily lead to the intrusion of external electromagnetic signals or the leakage of internal test signals, thus compromising the stability of the testing environment. At the same time, the electromagnetic signal transmission, acquisition, and processing stages of most test boxes are independent of each other, and noise interference is easily mixed in during signal transmission. It is difficult to achieve standard and controllable electromagnetic signal transmission and accurate signal acquisition and analysis, ultimately resulting in distorted test data that cannot accurately reflect the actual electromagnetic compatibility status of new energy vehicle components and cannot meet the requirements of high-precision testing. Summary of the Invention

[0004] The technical problem to be solved by this invention is that the electromagnetic signal transmission, acquisition and processing stages of the test box are independent of each other. The invention provides a shielded test box for electromagnetic compatibility testing of new energy vehicles, which can solve the problem of independent electromagnetic signal transmission, acquisition and processing stages of the test box.

[0005] To solve the above problems, the following technical solutions are provided: Design a shielded test box for electromagnetic compatibility testing of new energy vehicles, including a test box base. A movable groove is provided on one side of the test box base, and the movable grooves are symmetrically arranged on both sides of the test box base. Movable ears are movably connected inside the movable grooves. A rotating groove is provided on one side of the test box base, and the rotating grooves are symmetrically arranged on both sides. The rotating grooves penetrate the movable grooves, and a rotating shaft is movably connected inside the rotating grooves. The outer surface of the rotating shaft is connected to the movable ears. A control seat is fixedly connected to one side of the test box base, and one side of the control seat is connected to the rotating shaft. The control seat can control the rotation of the movable ears. A slanted pad is movably installed on one side of the test box base.

[0006] Furthermore, a protective wall is fixedly installed on the top of the movable ear, the protective walls are symmetrically distributed, and the protective walls form a closed box when they are in contact, and a support frame is fixedly installed on the top of the test box base.

[0007] The aforementioned technical solution utilizes symmetrically arranged movable and rotating slots on both sides of the test box base, along with a rotating shaft, to achieve a rotatable connection of the movable ears. The rotation of the movable ears is precisely controlled by a control unit, causing the top protective wall to close and unfold. The closed protective wall forms a sealed box, effectively isolating external electromagnetic interference and preventing internal electromagnetic signals from radiating outwards during testing, thus ensuring the accuracy and reliability of electromagnetic compatibility test data for new energy vehicles. A movable inclined pad on one side of the test box base can be flexibly adjusted to suit different specifications of new energy vehicle testing components, improving the device's adaptability and flexibility. The symmetrical design of the movable ears and protective wall, combined with the automated control of the control unit, simplifies the opening and closing of the shielded test box, reducing the operational difficulty for testing personnel and improving testing efficiency. The support frame at the top of the test box base provides stable support for the testing components, preventing displacement during testing and ensuring the smooth progress of the testing work. The overall device has a reasonable structural design, is easy to operate, has good shielding effect, and strong adaptability, effectively meeting the professional needs of electromagnetic compatibility testing for new energy vehicles.

[0008] Furthermore, a placement block is fixedly installed on one side of the support frame, a placement groove is provided on one side of the placement block, and a tensile hose is fixedly connected to one side of the inner wall of the protective wall.

[0009] The aforementioned technical solution, through the placement block and its placement groove fixedly installed on one side of the support frame, enables precise positioning and stable placement of the components to be tested in new energy vehicles, preventing slippage or displacement of the components during testing and ensuring that the components are always in the preset testing position, thereby further improving the accuracy of the test data. The tensile hose fixedly connected to one side of the inner wall of the protective wall not only has good tensile strength, adapting to the stretching and contraction movements during the opening and closing of the protective wall, avoiding damage to the pipeline caused by the rotation and contact of the protective wall, but also serves to store and protect the connecting pipelines required for testing, preventing the pipelines from becoming tangled and affecting the testing operation. At the same time, it effectively reduces the possibility of electromagnetic interference to the pipelines, ensuring the stability of the test signal transmission. Overall, through the addition of the placement block, placement groove, and tensile hose, the structural practicality and ease of operation of the device are further optimized, and the protection effect on the tested components and supporting pipelines is strengthened, making the electromagnetic compatibility testing process of new energy vehicles more stable and efficient.

[0010] Furthermore, the internal structure of the tensile hose is equipped with connecting lines, the two protective walls are connected to the tensile hose, the left tensile hose is connected to the right side of the placement block, the right tensile hose is connected to the left side of the placement block, and the two tensile hoses are interlaced.

[0011] The above technical solution, by movably installing the connecting lines inside the tensile flexible conduit, utilizes the protective properties of the conduit to effectively prevent the connecting lines from being stretched, worn, or squeezed during the opening and closing of the protective wall and during testing, ensuring the integrity of the lines and the stability of signal transmission. Simultaneously, it isolates the external electromagnetic environment from interference with the transmitted signals, further improving the accuracy of the test data. The two protective walls are respectively connected to the tensile flexible conduit, with the left tensile flexible conduit connected to the right side of the placement block and the right tensile flexible conduit connected to the left side of the placement block in an alternating manner. This structural design allows the tensile flexible conduit to achieve orderly stretching and contraction with the opening and closing of the protective wall, adapting to the movement trajectory of the protective wall and avoiding… In cases of tangling, knotting, or excessive stretching of the flexible tubing, a staggered layout ensures that the connecting lines follow a neat path to the testing components on the placement block. This prevents messy wiring from affecting testing operations or causing electromagnetic crosstalk. Furthermore, the staggered tensile tubing, once the protective wall is fitted to form a closed enclosure, further fills gaps in the internal wiring layout, enhancing the overall shielding effect. Through the coordination of the tensile tubing and connecting lines, and the staggered connection design, the protection and storage of the connecting lines are strengthened, while the internal wiring layout is optimized. This ensures the smoothness of the testing process and the reliability of the test results, further improving the structural rationality and operational stability of the device.

[0012] Furthermore, the tensile flexible tube extends into the interior of the placement block and is fixedly connected to an electrical wire. A movable rail is fixedly installed on the inner wall of the placement groove. The movable rail is located on the upper and lower sides of the inner wall of the placement groove. The interior of the movable rail is movably connected to the electrical wire. A limit ring is fixedly installed on the outer surface of the electrical wire.

[0013] The above technical solution achieves a stable connection between the connection line and the detection end by extending the tensile flexible tubing into one side of the placement block and fixing it to the wire. Combined with the movable rails on the upper and lower sides of the inner wall of the placement groove, a movable connection is formed with the wire, allowing the wire to move flexibly along the movable rails to adapt to the position adjustment needs of the component under test within the placement groove. Simultaneously, the limiting ring fixedly installed on the outer surface of the wire effectively restricts the wire's movement trajectory, preventing the wire from falling out of the movable rail and avoiding tangling or pulling due to excessive movement, thus ensuring the stability of the line connection and the continuity of signal transmission. This structure is designed... The design achieves flexible adjustment and reliable limiting of the wires through the cooperation of the movable rail and the limiting ring, while also concealing the wires inside the placement blocks and slots, reducing electromagnetic interference caused by exposed wires. It also prevents the wires from being subjected to external impacts and wear during testing, further protecting the integrity of the wires. Combined with the protective function of the tensile flexible hose, a complete wire protection system is formed from the connection point to the testing end, effectively improving the stability of wire transmission and the service life of the device. This makes the wire connection more reliable and the operation smoother during testing, further ensuring the accuracy of electromagnetic compatibility test results for new energy vehicles.

[0014] Furthermore, a first contact is fixedly connected to one side of the wire, and a second contact is fixedly installed on one side of the inner wall of the placement groove. The second contact is connected to the first contact, and is energized after being connected to the first contact. An electromagnetic transmitter is fixedly installed on the inner wall of the placement groove.

[0015] The above technical solution achieves energization by fixing a first contactor to one side of the wire and cooperating with a second contactor installed on the inner wall of the placement tank, utilizing their precise connection. This connection method is simple to operate and provides stable contact, ensuring reliable conduction of the detection circuit and avoiding signal interruption or data distortion due to poor wiring contact. The electromagnetic transmitter fixedly installed on the inner wall of the placement tank can accurately emit a preset electromagnetic signal within the closed shielded space formed by the protective wall, providing a standard and controllable electromagnetic testing environment for electromagnetic compatibility testing of new energy vehicles. Combined with the electromagnetic isolation effect of the shielded test box, it effectively eliminates the influence of external electromagnetic interference on the emitted signal, ensuring the electromagnetic transmitter's performance. The stability and accuracy of the output signal are ensured by the docking-type power-on design of the electrical contacts, which, combined with the built-in layout of the electromagnetic transmitter, forms an integrated closed-loop structure for the transmission and emission of the detection signal. This simplifies the connection operation of the detection circuit and keeps the electromagnetic emission component within a shielded protection range, further improving the accuracy of the electromagnetic emission and the controllability of the detection environment. This ensures that the electromagnetic compatibility testing of new energy vehicles can be carried out under standard and stable electromagnetic conditions, effectively improving the authenticity and reference value of the test results. At the same time, the overall structure is compact, integrating the power-on connection and the electromagnetic emission component into the placement slot, optimizing the internal layout of the device, and improving space utilization and ease of use.

[0016] Furthermore, the electromagnetic transmitter emits electromagnetic waves outward after being powered on, and a support rod is fixedly installed on one side of the protective wall, while a fixing plate is fixedly connected to the other side of the support rod.

[0017] The above technical solution can emit electromagnetic waves after the electromagnetic transmitter is powered on, and can build a standard and controllable electromagnetic testing environment within the closed shielding space formed by the protective wall. This provides a precise electromagnetic signal source for the electromagnetic compatibility testing of new energy vehicles. Combined with the electromagnetic isolation effect of the shielding space, it effectively avoids the influence of external electromagnetic interference on the testing process and ensures the accuracy of the test data.

[0018] Furthermore, an electromagnetic receiver is fixedly connected to one side of the protective wall, a filter is fixedly connected to one side of the electromagnetic receiver, and a motor controller is fixedly installed on the top of the fixing plate.

[0019] The above technical solution, by fixing an electromagnetic receiver to one side of the protective wall, can accurately receive electromagnetic waves emitted by the electromagnetic transmitter within the enclosed shielded space, as well as electromagnetic signals generated by the components of the new energy vehicle under test. This provides a comprehensive and accurate signal acquisition foundation for electromagnetic compatibility testing. Combined with a filter fixedly connected to one side of the electromagnetic receiver, the acquired electromagnetic signals can be efficiently filtered, eliminating noise and interference components, purifying the effective detection signal, and avoiding data distortion caused by noise interference, thus significantly improving the quality of the detection signal and the accuracy of the detection results. A motor controller fixedly installed on the top of the mounting plate enables automated and precise control of the drive components within the device, especially the control seat's action of opening and closing the protective wall. Intelligent adjustment ensures the smoothness and accuracy of the protective wall's opening and closing, allowing it to precisely fit and form a sealed shielding space. Simultaneously, it coordinates and regulates the operational status of testing components such as the electromagnetic transmitter and receiver, automating the testing process, reducing manual intervention and human error, and improving overall testing efficiency. The addition of an electromagnetic receiver, filter, and motor controller not only improves the electromagnetic signal acquisition and processing system, ensuring the accuracy of test data, but also achieves automated and intelligent control of the device's operation, optimizing the operating process, improving testing efficiency and the device's intelligence level, further meeting the high-precision and automated professional requirements of electromagnetic compatibility testing for new energy vehicles.

[0020] Furthermore, a drive motor is fixedly installed on one side of the fixed plate, a first fixed seat is fixedly installed on the other side of the drive motor, and a second fixed seat is fixedly connected to one side of the other drive motor.

[0021] The above technical solution, by fixing a drive motor to one side of the fixed plate and using fixed base one and fixed base two to securely install and position the drive motors on both sides, provides reliable support and fixation for the drive motors, preventing shaking or displacement during operation and ensuring the stability and transmission efficiency of the motor output power. Furthermore, the differentiated connection layout of the fixed bases adapts to the installation and transmission requirements of the drive motors on both sides, allowing the drive motor power to be precisely transmitted to the control base and other drive components, achieving efficient driving and precise control of the opening and closing action of the protective wall. The fixed installation of the drive motors, combined with the regulation of the motor controller, further improves the automation of the device. The automated drive system makes the opening and closing of the protective wall smoother and more responsive, enabling rapid sealing and opening of the shielded space, improving the convenience and efficiency of testing operations. Simultaneously, the protective function of the mounting brackets for the drive motor reduces external collisions and wear during operation, extending the motor's lifespan and ensuring long-term stable operation of the device. The overall installation, through the cooperation of the drive motor with mounting brackets one and two, strengthens the device's power drive system, improves the stability of power transmission and the precision of drive control, further optimizing the device's automated operation performance and meeting the high-efficiency and stable requirements for electromagnetic compatibility testing of new energy vehicles.

[0022] Furthermore, a connecting groove is provided on one side of the second fixing seat, and a connecting arc plate is fixedly connected to one side of the first fixing seat, the connecting arc plate being connected to the connecting groove.

[0023] The above technical solution, by setting a connecting groove on one side of the fixed base and fixing a connecting arc-shaped plate on one side of the fixed base, achieves stable linkage between the two drive motors through the precise fit between the connecting arc-shaped plate and the connecting groove. This allows the power output of the two drive motors to coordinate and ensure that the driving action of opening and closing the protective wall is synchronous and smooth, avoiding the problem of misalignment and loose fit of the protective wall due to inconsistent power transmission on both sides. This further improves the sealing performance and shielding effect of the shielding space formed by the protective wall. The arc-shaped structure design of the connecting arc-shaped plate is adapted to the connecting groove, which increases the contact area between the two and enhances the connection strength. This design combines robustness and stability with the ability to distribute forces during power transmission, reducing wear at connection points and extending component lifespan. Furthermore, the connection method is easy to install and disassemble, facilitating subsequent maintenance and repair of the drive motor and transmission components, thus reducing maintenance costs. The overall connection, achieved through the interlocking of the arc-shaped plate and connecting groove, enhances the linkage between the two drive motors, improving the stability and synchronization of power transmission, ensuring the precision of the protective wall's opening and closing actions, and further optimizing the structural stability and ease of use of the device. This meets the high requirements for operational stability in electromagnetic compatibility testing of new energy vehicles.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This shielded test box for electromagnetic compatibility testing of new energy vehicles uses a control seat to drive the movable ears and rotating shaft, causing the protective wall to fit together to form a closed box, effectively isolating external electromagnetic interference and preventing internal signal leakage. The built-in electromagnetic transmitter emits standard controllable electromagnetic signals, the electromagnetic receiver accurately collects the signals, and the filter filters out noise, constructing a closed-loop system from transmission to processing. This creates an interference-free environment for testing, significantly improving the accuracy and reliability of electromagnetic compatibility test data for new energy vehicles. 2. This shielded test box for electromagnetic compatibility testing of new energy vehicles features an adjustable angled base pad, and placement blocks and slots allow for precise positioning of test components of different specifications. The movable rail, limit ring, and tensile flexible hose work together to achieve flexible adjustment, orderly storage, and full-process protection of the wiring. A motor controller coordinates with the motor and fixed base to achieve automated and precise control of the opening and closing of the protective wall, simplifying the operation process, reducing human error, and improving testing efficiency. 3. This shielded test box for electromagnetic compatibility testing of new energy vehicles features a support rod and a fixed plate that enhance the structural strength and sealing of the protective wall, further improving the shielding effect. The connecting arc plate of the first fixed base matches the connecting groove of the second fixed base, enabling stable linkage between the two drive motors, ensuring synchronous and stable power transmission, and reducing component vibration and wear. Each protective structure effectively protects core components such as wiring and motors, reducing the failure rate and extending the overall service life of the device. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the internal three-dimensional structure of the present invention; Figure 4 This is a partially enlarged structural diagram of the rotating groove of the present invention; Figure 5 This is a partially enlarged structural diagram of the drive motor portion of the present invention. Figure 1 ; Figure 6 This is a partially enlarged structural diagram of the placement block portion of the present invention; Figure 7 This is a partially enlarged structural diagram of the drive motor portion of the present invention. Figure 2 ; Figure 8 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0026] In the diagram: 1. Test box base; 2. Movable slot; 3. Rotating slot; 4. Movable ear; 5. Rotating shaft; 6. Control seat; 7. Protective wall; 8. Inclined pad; 9. Support frame; 10. Placement block; 11. Placement slot; 12. Tensile hose; 13. Connecting line; 14. Electrical contact one; 15. Electrical contact two; 16. Wire; 17. Movable rail; 18. Limiting ring; 19. Electromagnetic transmitter; 20. Electromagnetic receiver; 21. Filter; 22. Support rod; 23. Fixing plate; 24. Motor controller; 25. Drive motor; 26. Fixing seat one; 27. Fixing seat two; 28. Connecting slot; 29. ​​Connecting arc plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1 - Figure 8As shown in the figure, this embodiment provides a shielded test box for electromagnetic compatibility testing of new energy vehicles, including a test box base 1. A movable groove 2 is provided on one side of the test box base 1, symmetrically arranged on both sides of the test box base 1. Movable ears 4 are movably connected inside the movable groove 2. A rotating groove 3 is provided on one side of the test box base 1, symmetrically arranged on both sides, penetrating the movable groove 2. A rotating shaft 5 is movably connected inside the rotating groove 3, and the outer surface of the rotating shaft 5 is connected to the movable ears 4. A control seat 6 is fixedly connected to one side of the test box base 1, and one side of the control seat 6 is connected to the rotating shaft 5. The control seat 6 can control the rotation of the movable ears 4. A slanted pad 8 is movably installed on one side of the test box base 1. A protective wall 7 is fixedly installed on the top of the movable ears 4, symmetrically distributed. When the protective walls 7 are closed, they form a closed box. A support frame 9 is fixedly installed on the top of the test box base 1. Before testing, the slanted pad 8 movably installed on one side of the test box base 1 is adjusted according to the specifications of the new energy vehicle component to be tested. After adjusting to the appropriate angle, the component to be tested is placed on the support frame 9 fixedly installed on the top of the test box base 1 to complete the initial positioning. When electromagnetic shielding testing is required, the control seat 6 fixedly connected to one side of the test box base 1 is activated and outputs power, driving the rotating shaft 5 connected to it to rotate inside the rotating groove 3. The rotating groove 3 passes through the movable grooves 2 symmetrically arranged on both sides of the test box base 1. The outer surface of the rotating shaft 5 is connected to the movable ear 4 movably connected inside the movable groove 2. Therefore, the rotation of the rotating shaft 5 will drive the movable ear 4 to rotate synchronously in the movable groove 2. The top of the movable ear 4 is fixedly installed with symmetrically distributed protective walls 7. The rotation of the movable ear 4 will pull the protective walls 7 on both sides to move towards the middle and fit together, finally forming a closed box, thereby isolating external electromagnetic interference and preventing internal electromagnetic signals from radiating outward during the testing process, thus creating a stable and interference-free testing environment for electromagnetic compatibility testing of new energy vehicles.

[0029] Preferably, a placement block 10 is fixedly installed on one side of the support frame 9, and a placement groove 11 is provided on one side of the placement block 10. A tensile hose 12 is fixedly connected to one side of the inner wall of the protective wall 7. A connecting wire 13 is movably installed inside the tensile hose 12. The two protective walls 7 are connected to the tensile hose 12. The left tensile hose 12 is connected to the right side of the placement block 10, and the right tensile hose 12 is connected to the left side of the placement block 10. The two tensile hoses 12 are staggered. An electric wire 16 is fixedly connected to one side of the tensile hose 12 extending into the interior of the placement block 10. The placement groove 11... A movable rail 17 is fixedly installed on the inner wall of the placement groove 11. The movable rail 17 is located on the upper and lower sides of the inner wall of the placement groove 11. The interior of the movable rail 17 is movably connected to the wire 16. A limit ring 18 is fixedly installed on the outer surface of the wire 16. A first contact 14 is fixedly connected to one side of the wire 16. A second contact 15 is fixedly installed on one side of the inner wall of the placement groove 11. The second contact 15 is connected to the first contact 14. After the second contact 15 is connected to the first contact 14, it is energized. An electromagnetic transmitter 19 is fixedly installed on the inner wall of the placement groove 11. After the protective wall 7 is completed... After initial positioning, the new energy vehicle component to be tested is precisely placed into the placement slot 11 of the placement block 10 fixedly installed on one side of the support frame 9, achieving stable positioning of the component. As the control seat 6 drives the movable ear 4 to move the protective wall 7 towards the center, the tensile hose 12 fixedly connected to one side of the inner wall of the protective wall 7 will move synchronously with the movement of the protective wall 7. Since both sides of the protective wall 7 are connected to the tensile hose 12, and the left tensile hose 12 is connected to the right side of the placement block 10, and the right tensile hose 12 is connected to the left side of the placement block 10 in an interlaced state, the tensile hose 12 can be stretched or contracted in an orderly manner along the preset trajectory. The internal movable connection line 13 can remain stable under the protection of the hose, avoiding entanglement or damage. At the same time, the wire 16 fixedly connected to one side of the placement block 10 by the tensile hose 12 will be slightly adjusted with the placement position of the component under the guidance of the movable rail 17. The limiting ring 18 fixedly installed on the outer surface of the wire 16 can prevent the wire 16 from falling out of the placement slot 11. The movable rails 17, which are fixedly installed on the upper and lower sides of the inner wall, detach to ensure that the first contact 14, which is fixedly connected to one side of the wire 16, is precisely connected to the second contact 15, which is fixedly installed on one side of the inner wall of the placement slot 11. After the connection is made, the circuit is connected, thereby supplying power to the electromagnetic transmitter 19, which is fixedly installed on the inner wall of the placement slot 11. After the electromagnetic transmitter 19 is powered on, it can emit a preset electromagnetic signal in the closed box formed by the protective wall 7, providing a standard test signal source for subsequent electromagnetic compatibility testing.

[0030] Preferably, after the electromagnetic transmitter 19 is powered on, it emits electromagnetic waves. A support rod 22 is fixedly installed on one side of the protective wall 7, and a fixing plate 23 is fixedly connected to the other side of the support rod 22. An electromagnetic receiver 20 is fixedly connected to one side of the protective wall 7, and a filter 21 is fixedly connected to one side of the electromagnetic receiver 20. A motor controller 24 is fixedly installed on the top of the fixing plate 23. A drive motor 25 is fixedly installed on one side of the fixing plate 23. A fixing seat 26 is fixedly installed on the other side of the drive motor 25. A fixing seat 27 is fixedly connected to one side of the drive motor 25. A connecting groove 28 is provided on one side of the fixing seat 27. A connecting arc plate 29 is fixedly connected to one side of the fixing seat 26. The connecting arc plate 29 is connected to the connecting groove 28. After the electromagnetic transmitter 19 is powered on, it emits preset electromagnetic waves, constructing a standard electromagnetic test environment within the closed box formed by the protective wall 7. At this time, the electromagnetic receiver 20 fixedly connected to one side of the protective wall 7... Synchronous startup accurately collects electromagnetic waves emitted by the electromagnetic transmitter 19 within the enclosed space, as well as electromagnetic signals generated by the components of the new energy vehicle under test. The collected signals are then transmitted to a filter 21 fixedly connected to one side of the electromagnetic receiver 20. After filtering out noise interference, a clean and effective detection signal is obtained, ensuring the accuracy of subsequent detection and analysis. The support rod 22 fixedly installed on one side of the protective wall 7 provides stable support to the fixed plate 23 fixedly connected on the other side, ensuring that the motor controller 24 fixedly installed on the top of the fixed plate 23 and the drive motor 25 fixedly installed on one side maintain a stable working state. The motor controller 24 can adjust the operation of the drive motor 25 according to the detection requirements. The drive motor 25 transmits power through the fixed seat 1 26 fixedly installed on the other side and the fixed seat 27 fixedly connected to one side of the drive motor 25 on the other side. The connecting arc plate 29 fixedly connected to one side of the fixed seat 1 26 is precisely connected to the connecting groove 28 set on one side of the fixed seat 27, realizing the coordinated linkage of the two drive motors 25, ensuring stable and synchronous power transmission, and thus assisting in the control of the protective wall 7. Maintaining a tight, sealed fit ensures the stability of the closed testing environment, providing structural and dynamic support for the smooth conduct of electromagnetic compatibility testing.

[0031] This embodiment presents a shielded test box for electromagnetic compatibility testing of new energy vehicles. Through the linkage structure of movable grooves 2 and rotating grooves symmetrically arranged on both sides of the test box base 1, along with the rotating shaft 5 and movable ears 4, the protective wall 7 can be precisely fitted to form a closed box under the drive of the control seat 6. This effectively isolates external electromagnetic interference and prevents leakage of internal test signals, creating a stable and interference-free environment for testing. Simultaneously, the placement block 10 and placement groove 11 on one side of the support frame 9 can accurately position and stably limit the test components. Combined with the staggered tensile flexible hoses 12, this effectively protects the internal connecting lines 13, preventing entanglement and damage during the opening and closing of the protective wall 7. The cooperation of the movable rail 17 and the limiting ring 18 ensures flexible adjustment and stable connection of the wires 16, ensuring precise connection and conduction of the circuit between the first contact 14 and the second contact 15, providing stable power to the electromagnetic transmitter 19 to emit standard electromagnetic signals. The electromagnetic receiver 20 then accurately collects the signals and filters them through the filter 21. Filtering out noise significantly improves the accuracy and reliability of the test data. Furthermore, the cooperation between the support rod 22 and the fixing plate 23 enhances the structural stability and sealing of the protective wall 7. The motor controller 24 regulates the operation of the drive motor 25, and combined with the linkage structure of the first fixing seat 26, the second fixing seat 27, and the connecting arc plate 29 and the connecting groove 28, the coordinated power transmission of the drive motors 25 on both sides is achieved, further ensuring the stability of the sealing state of the protective wall 7. Meanwhile, the adjustable design of the inclined pad 8 adapts to different specifications of test components. The overall device is easy to operate and highly adaptable. The coordinated cooperation of all components improves testing efficiency and extends the service life of the device, fully meeting the high-precision and stable professional requirements of electromagnetic compatibility testing for new energy vehicles.

[0032] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not 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 the invention. In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shielded test box for electromagnetic compatibility testing of new energy vehicles, comprising a test box base (1), characterized in that: The test box base (1) has a movable groove (2) on one side, and the movable groove (2) is symmetrically arranged on both sides of the test box base (1). The movable groove (2) is movably connected to the inside of the movable groove (2). The test box base (1) has a rotating groove (3) on one side, and the rotating groove (3) is symmetrically arranged on both sides. The rotating groove (3) passes through the movable groove (2). The rotating groove (3) is movably connected to the inside of the rotating groove (3). The outer surface of the rotating shaft (5) is connected to the movable ear (4). The test box base (1) has a control seat (6) fixedly connected to one side. The control seat (6) is connected to the rotating shaft (5) on one side. The control seat (6) can control the rotation of the movable ear (4). The test box base (1) has a movably installed inclined pad (8) on one side.

2. The shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 1, characterized in that: The top of the movable ear (4) is fixedly installed with a protective wall (7), the protective walls (7) are symmetrically distributed, and the protective walls (7) form a closed box when they are closed. The top of the test box base (1) is fixedly installed with a support frame (9).

3. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 2, characterized in that: A placement block (10) is fixedly installed on one side of the support frame (9), and a placement groove (11) is provided on one side of the placement block (10). A tensile hose (12) is fixedly connected to one side of the inner wall of the protective wall (7).

4. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 3, characterized in that: The internal connecting line (13) is installed in the tensile hose (12). The two protective walls (7) are connected to the tensile hose (12). The left tensile hose (12) is connected to the right side of the placement block (10). The right tensile hose (12) is connected to the left side of the placement block (10). The two tensile hoses (12) are interlaced.

5. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 4, characterized in that: The tensile hose (12) extends into the inside of the placement block (10) and is fixedly connected to an electric wire (16). A movable rail (17) is fixedly installed on the inner wall of the placement groove (11). The movable rail (17) is located on the upper and lower sides of the inner wall of the placement groove (11). The interior of the movable rail (17) is movably connected to the electric wire (16). A limit ring (18) is fixedly installed on the outer surface of the electric wire (16).

6. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 5, characterized in that: One side of the wire (16) is fixedly connected to a first contact (14), and one side of the inner wall of the placement groove (11) is fixedly installed with a second contact (15). The second contact (15) is connected to the first contact (14). After the second contact (15) is connected to the first contact (14), it is energized. An electromagnetic transmitter (19) is fixedly installed on the inner wall of the placement groove (11).

7. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 6, characterized in that: The electromagnetic transmitter (19) emits electromagnetic waves after being powered on. A support rod (22) is fixedly installed on one side of the protective wall (7), and a fixing plate (23) is fixedly connected to the other side of the support rod (22).

8. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 7, characterized in that: An electromagnetic receiver (20) is fixedly connected to one side of the protective wall (7), a filter (21) is fixedly connected to one side of the electromagnetic receiver (20), and a motor controller (24) is fixedly installed on the top of the fixing plate (23).

9. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 8, characterized in that: A drive motor (25) is fixedly installed on one side of the fixed plate (23), a first fixed seat (26) is fixedly installed on the other side of the drive motor (25), and a second fixed seat (27) is fixedly connected to one side of the drive motor (25) on the other side.

10. A shielded test box for electromagnetic compatibility testing of new energy vehicles according to claim 9, characterized in that: A connecting groove (28) is provided on one side of the second fixing seat (27), and a connecting arc plate (29) is fixedly connected to one side of the first fixing seat (26). The connecting arc plate (29) is connected to the connecting groove (28).

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