A new energy vehicle high-voltage distribution box extrusion resistance testing device

Abstract

The application provides a new energy automobile high-voltage distribution box extrusion resistance test device, belonging to the field of high-voltage distribution box extrusion resistance test, comprising: a set of support frames, an extrusion test mechanism composed of a motor, a transmission sleeve, a self-rotating arm, a transmission arm and the like, cooperating with the sliding groove and the limiting sliding assembly on the sliding plate, the test punch can be stably driven to extrude the distribution box at a speed of 2 mm / min. The mechanical transmission structure ensures stable extrusion and solves the error caused by the extrusion speed and driving force in the existing test. Three kinds of punches, disc, edge and cone, are designed to test different parts (interfaces, sides, upper cover plates, etc.) of the distribution box in X, Y and Z directions. The distribution box placement groove is replaceable and the direction is adjustable. During the test, the distribution box is powered throughout the process and the current change is monitored in real time. Combined with the phenomenon of shell damage, failure is determined. Not only pay attention to physical damage, but also closer to the actual working state, solve the problem that the existing technology only determines failure according to the shell state, make the determination more accurate.

Description

Technical Field

[0001] This application belongs to the field of high voltage distribution box compression resistance testing, specifically relating to a device for testing the compression resistance of high voltage distribution boxes for new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, vehicle safety performance has become a focus of attention. Among these, the high-voltage distribution box, as a core component of the high-voltage system in new energy vehicles, directly affects the safety of the vehicle and its occupants in collision accidents. Various countries have established multiple safety crash test standards, including national standards, NCAP, and CIAS, covering various collision conditions such as frontal, side, and pole impacts, to evaluate the safety performance of vehicles under different collision scenarios.

[0003] The location of the high-voltage power distribution box varies across different vehicle models, and the complex internal structure of automobiles means that it may be subjected to various forms of compression under different collision conditions (such as compression from objects of different directions and shapes). To ensure the reliability of the high-voltage power distribution box during a collision, it is necessary to verify its resistance to compressive forces through compression tests simulating actual collision scenarios.

[0004] The shortcomings of existing technology.

[0005] 1) Existing high-voltage distribution box tests mostly use a single planar compression method, which only covers some collision scenarios and cannot fully simulate the various compression methods that it may suffer in actual collisions (such as compression from objects of different directions and shapes). The test scenarios are limited.

[0006] 2) Existing failure determination methods are relatively simple, relying solely on whether the high-voltage distribution box casing is damaged and the width of the cracks after the test to determine whether it has failed. This ignores the impact of damage to its complex internal structure on electrical performance and cannot accurately reflect the actual working status and failure status of the distribution box. Utility Model Content

[0007] The purpose of this utility model is to provide a pressure resistance testing device for high-voltage power distribution boxes of new energy vehicles, so as to solve the problem that the existing equipment adopts a single planar extrusion method, which only covers part of the collision scenario and cannot fully simulate the various extrusion methods that the vehicle may suffer in actual collisions. The failure judgment method is also relatively simple.

[0008] The first aspect of this application provides a device for testing the compressive strength of a high-voltage power distribution box for new energy vehicles, comprising:

[0009] Work platform;

[0010] A support frame, a set of the support frames being fixedly installed at the bottom of the work platform;

[0011] The motor is mounted on the bottom of the work platform with screws.

[0012] A sliding plate, which is fixedly installed on the top of the work platform by screws;

[0013] Mounting plates are installed on both sides of the work platform by screws, and a sliding plate is disposed between the mounting plates.

[0014] A set of the slide grooves is provided on the top of the sliding plate.

[0015] Preferably, the working platform;

[0016] A transmission sleeve, which is fixedly sleeved on the outer wall of the output end of the motor;

[0017] The self-rotating arm is fixedly sleeved on the outer wall of the self-rotating arm;

[0018] The first rotating shaft, a set of the first rotating shafts, is fixedly connected to the top two sides of the self-rotating arm;

[0019] A set of transmission arms are rotatably connected to the outer wall of the first rotating shaft;

[0020] A second rotating shaft, a set of the second rotating shafts, is rotatably disposed inside the transmission arm.

[0021] Preferably, the groove;

[0022] Mounting plate, a set of mounting plates is fixedly connected to the bottom of the second rotating shaft;

[0023] A limiting sliding assembly, wherein a set of the limiting sliding assembly screws are fixedly installed on the bottom of the mounting plate;

[0024] Mounting platform, each of the mounting platforms is fixed to the outer surface of the mounting platform with corresponding screws.

[0025] Preferably, the sliding portion of each of the limiting sliding components is slidably disposed inside the slide groove;

[0026] An extruded structure mounting flange, a set of the extruded structure mounting flanges are fixedly connected to the outer surface of the mounting platform with corresponding screws.

[0027] Preferably, the mounting plate;

[0028] A set of baffles are fixedly connected to the outer surface of the mounting plate with corresponding screws, and each baffle is provided on both sides of the top of the slide groove;

[0029] A set of distribution box placement slots is screwed and fixedly installed on the top of the baffle, and the outer surface of each baffle is screwed and fixedly connected to the outer surface of the mounting plate.

[0030] Preferably, the extrusion structure is mounted with a flange;

[0031] Each extrusion structure mounting flange is used to replace different testing tools.

[0032] Preferably, the extrusion structure is mounted with a flange;

[0033] Each of the aforementioned extrusion structure mounting flanges can be fitted with punches of various types, including disc punches, conical punches, conical punches, and edge punches.

[0034] Preferably, the baffle;

[0035] Each of the baffles prevents the limiting sliding assembly from sliding excessively, which could lead to derailment.

[0036] Preferably, the distribution box is placed in a slot;

[0037] The function of the distribution box placement slot is to place the distribution box. The distribution box can be adjusted in direction during testing to test different sides.

[0038] Each of the aforementioned power distribution box placement slots is equipped with a circuit interface for connecting to the power distribution box circuit.

[0039] Preferably, the feature is that: after the punch is installed on the flange of each extrusion structure, it cooperates with the interior of the distribution box placement slot.

[0040] In some possible embodiments, the extrusion resistance testing device for a high-voltage power distribution box for new energy vehicles provided in this application has all the beneficial effects of the fastener, which will not be elaborated here.

[0041] Compared with the prior art, the technical solution provided in this application includes at least the following technical effects:

[0042] 1. This utility model utilizes a compression testing mechanism composed of a motor, transmission sleeve, self-rotating arm, and transmission arm, along with a sliding groove and limiting sliding assembly on a sliding plate, to stably drive the test punch to compress the electrical distribution box at a speed of 2 mm / min. This mechanical transmission structure ensures the stability and speed consistency of the compression process, providing a foundation for the accuracy of test results and solving the test error problems caused by unstable compression speed and uneven driving force in existing tests.

[0043] 2. This utility model designs three types of punches: disc, edge, and cone. It combines these with tests on different compression points (interfaces, sides, top cover, etc.) in the X, Y, and Z directions of the distribution box. Furthermore, the distribution box placement slot is replaceable, and the distribution box orientation is adjustable. This multi-dimensional, multi-scenario testing design comprehensively covers the compression methods that a high-voltage distribution box may experience during a collision, overcoming the shortcomings of existing technologies that only use planar compression and have limited testing scenarios. It can more realistically simulate actual collision conditions.

[0044] 3. This utility model ensures the distribution box is continuously energized during testing and monitors current changes in real time. Failure is determined by combining this with phenomena such as shell damage and interface breakage. This method not only focuses on the physical damage to the distribution box but also reflects abnormalities in its internal electrical performance through current changes, more closely resembling the actual working state of the distribution box when it is installed in a vehicle. It solves the problem of existing technologies that only rely on the shell condition to determine failure and cannot accurately reflect whether the internal functions are normal, making failure determination more accurate.

[0045] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0046] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0047] Figure 1 This is a perspective view of a pressure resistance testing device for a high-voltage power distribution box in a new energy vehicle, as proposed in this utility model.

[0048] Figure 2 This is a bottom-view perspective view of a pressure resistance testing device for a high-voltage power distribution box of a new energy vehicle proposed in this utility model.

[0049] Figure 3 This is a three-dimensional view of the mechanical structure of a pressure resistance testing device for a high-voltage power distribution box in a new energy vehicle, as proposed in this utility model.

[0050] Figure 4 This is a three-dimensional exploded view of the mechanical structure of a high-voltage power distribution box for new energy vehicles that is designed to withstand compressive stress.

[0051] Figure 5 This is a three-dimensional disassembled view of another part of the mechanical structure of the extrusion resistance testing device for a high-voltage power distribution box of a new energy vehicle proposed in this utility model.

[0052] Figure label:

[0053] 1. Support frame; 11. Working platform;

[0054] 2. Sliding plate; 21. Slide groove;

[0055] 301. Motor; 302. Transmission sleeve; 303. Rotating arm; 304. First rotating shaft; 305. Transmission arm; 306. Second rotating shaft; 307. Mounting plate;

[0056] 308. Limiting sliding assembly; 309. Mounting platform;

[0057] 4. Extruded structure mounting flange;

[0058] 5. Install the upright plate; 51. Baffle; 52. Distribution box placement slot. Detailed Implementation

[0059] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0060] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0061] In some embodiments, please refer to the appendix. Figure 1 To be continued Figure 5 As shown: This application provides a pressure resistance testing device for a high-voltage power distribution box of a new energy vehicle, comprising: a set of support frames 1, a working platform 11 fixedly installed on the top of the set of support frames 1, and a pressure testing mechanism 3 provided on the outer surface of the working platform 11; the pressure testing mechanism 3 includes a motor 301, a transmission sleeve 302 fixedly connected to the output end of the motor 301, a self-rotating arm 303 fixedly connected to the outer wall of the transmission sleeve 302, a set of first rotating shafts 304 fixedly connected to the top of the self-rotating arm 303, a transmission arm 305 rotatably connected to the outer wall of each first rotating shaft 304, a second rotating shaft 306 rotatably connected to the inside of each transmission arm 305, a mounting plate 307 fixedly connected to the bottom of each second rotating shaft 306, a limit sliding component 308 fixedly connected to the bottom of each mounting plate 307, and a mounting platform 309 fixedly connected to the top of each limit sliding component 308.

[0062] In this embodiment, the motor 301 serves as a power source, and its output end drives the transmission sleeve 302 to rotate, thereby causing the self-rotating arm 303 fixed on the outer wall of the transmission sleeve 302 to rotate accordingly. The first rotating shaft 304 at the top of the self-rotating arm 303 is rotatably connected to the transmission arm 305. When the self-rotating arm 303 rotates, it will drive the transmission arm 305 to move through the first rotating shaft 304. The transmission arm 305 is connected to the mounting plate 307 through the second rotating shaft 306. The movement of the transmission arm 305 will be transmitted to the mounting plate 307, thereby driving the limiting sliding component 308 and the mounting platform 309 to move, providing power and motion basis for subsequent extrusion testing.

[0063] In some embodiments, please refer to the appendix. Figure 1 Appendix Figure 3 To be continued Figure 5 As shown: A sliding plate 2 is fixedly installed on the top of the working platform 11. A set of sliding grooves 21 are opened on the top of the sliding plate 2. Each limiting sliding component 308 is correspondingly slidably set inside the sliding groove 21. An extrusion structure mounting flange 4 is screwed and fixedly installed on the outer surface of each mounting platform 309. Each extrusion structure mounting flange 4 is used to replace different testing tools. Mounting uprights 5 are provided on both sides of the sliding plate 2. The outer surface of the mounting uprights 5 is fixedly installed to the outer surface of the working platform 11 by screws.

[0064] In this embodiment, the sliding plate 2 at the top of the work platform 11 has a groove 21, and the limiting sliding component 308 is correspondingly slidably disposed in the groove 21. This design guides the movement of the limiting sliding component 308, ensuring that it moves along a predetermined trajectory. The extrusion structure mounting flange 4 on the mounting platform 309 can be fixed with screws to install different testing tools, increasing the versatility of the equipment and adapting to various testing needs. The mounting plates 5 on both sides of the sliding plate 2 are fixed to the work platform 11 with screws, which play a role in providing stable support and installing other components.

[0065] In some embodiments, please refer to the appendix. Figure 3 To be continued Figure 5 As shown: baffles 51 are fixedly installed on the outer surface of the mounting plate 5. The baffles 51 prevent the limiting sliding component 308 from sliding excessively and causing derailment. The top of each baffle 51 is fixedly installed with a power distribution box placement slot 52 by screws. The size of the power distribution box placement slot 52 can be disassembled and replaced. The extrusion structure mounting flange 4 can be installed with various types of punches, including disc punches, conical punches, and edge punches. The function of the power distribution box placement slot 52 is to place the power distribution box. The power distribution box can be adjusted in direction during testing to perform tests on different sides.

[0066] In this embodiment, the baffle 51 on the outer surface of the mounting plate 5 can effectively prevent the limiting sliding component 308 from sliding excessively and derailing, ensuring the safety of equipment operation. The power distribution box placement slot 52 on the top of the baffle 51 is used to place the power distribution box to be tested, and its size is detachable and replaceable to adapt to power distribution boxes of different specifications. At the same time, the extrusion structure mounting flange 4 can install various types of punches, such as disc punches, conical punches, edge punches, etc. Combined with the feature that the direction can be adjusted to test different surfaces during power distribution box testing, the equipment can comprehensively test the extrusion resistance of the power distribution box.

[0067] Working principle: Before testing, select a suitable distribution box placement slot 52 according to the specifications of the high-voltage distribution box of the new energy vehicle to be tested, fix it to the top of the baffle 51 with screws, and place the distribution box into the distribution box placement slot 52. Adjust the placement direction of the distribution box according to the test requirements to correspond to the target direction to be tested in the X, Y, and Z directions (e.g., X direction corresponds to the interface, Y direction corresponds to the side or interface, and Z direction corresponds to the top cover or interface). Then, according to the requirements of the test direction and the extrusion part, install the corresponding test on the mounting platform 309 through the extrusion structure mounting flange 4. The punch (optional: disc punch, edge punch, or conical punch) is connected to the interface cable of the power distribution box, and the power is turned on to simulate its actual working state during vehicle installation. Simultaneously, the current monitoring device is activated to record current changes in real time. The motor 301 is started, and its output drives the transmission sleeve 302 to rotate. The transmission sleeve 302 synchronously drives the self-rotating arm 303 fixed to the outer wall to rotate. When the self-rotating arm 303 rotates, it drives the transmission arm 305 to move via the first rotating shaft 304 at the top. The transmission arm 305 transmits the motion to the mounting plate via the internal second rotating shaft 306. 307, which in turn drives the limiting sliding component 308 at the bottom of the mounting plate 307 to slide directionally along the slide groove 21 on the sliding plate 2 (the slide groove 21 ensures that the limiting sliding component 308 moves along a predetermined trajectory to avoid deviation). As the limiting sliding component 308 slides, the mounting platform 309 moves synchronously, causing the test punch on the extrusion structure mounting flange 4 to gradually approach the target extrusion part of the distribution box at a speed of 2mm / min and apply extrusion force. During the extrusion process, the current change and the physical state of the distribution box are monitored in real time: if there is a violent fluctuation in the current or the outer shell of the distribution box breaks... If the interface breaks or other issues occur, the test should be stopped immediately, and the distribution box should be deemed to have failed under the current test conditions. During the test, the mounting plate 5 provides stable support for the baffle 51 and the distribution box placement slot 52. The baffle 51 effectively limits the sliding range of the limiting sliding component 308, preventing it from derailing due to excessive sliding. If it is necessary to test other directions or parts of the distribution box, the distribution box direction can be readjusted, the corresponding punch replaced, and the above process repeated. This comprehensively simulates the compression methods that the high-voltage distribution box may suffer under different collision conditions, and realizes a systematic test of its compression resistance.

[0068] In this application, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for testing the compressive strength of a high-voltage power distribution box for new energy vehicles, characterized in that, include: Work platform (11); Support frame (1), a set of the support frames (1) are fixedly installed at the bottom of the work platform (11); The motor (301) is fixedly mounted to the bottom of the work platform (11) with screws on its mounting part; A sliding plate (2) is fixedly installed on the top of the work platform (11) by screws; Mounting plates (5), a set of mounting plates (5) are fixedly connected to both sides of the work platform (11) by screws, and the sliding plate (2) is arranged between the set of mounting plates (5); A set of grooves (21) are provided on the top of the sliding plate (2).

2. The extrusion resistance testing device for a high-voltage power distribution box for new energy vehicles according to claim 1, characterized in that: The working platform (11); Transmission sleeve (302), the transmission sleeve (302) is fixedly sleeved on the outer wall of the output end of the motor (301); Rotating arm (303), the rotating arm (303) is fixedly sleeved on the outer wall of the rotating arm (303); First rotating shaft (304), a set of first rotating shafts (304) are fixedly connected to the top two sides of the self-rotating arm (303); A set of transmission arms (305) are rotatably connected to the outer wall of the first rotating shaft (304); A second rotating shaft (306) is rotatably disposed inside the transmission arm (305).

3. The extrusion resistance testing device for a high-voltage power distribution box for new energy vehicles according to claim 2, characterized in that: The groove (21); Mounting plate (307), a set of said mounting plates (307) are fixedly connected to the bottom of the second rotating shaft (306); A limiting sliding assembly (308) is fixedly installed on the bottom of the mounting plate (307) with a set of screws. Mounting platform (309), a set of mounting platforms (309) are all fixed to the outer surface of the mounting platform (309) with corresponding screws.

4. The extrusion resistance testing device for a high-voltage power distribution box for new energy vehicles according to claim 3, characterized in that: The sliding portion of each of the aforementioned limiting sliding components (308) is slidably disposed inside the slide groove (21); An extruded structure mounting flange (4) is fixedly connected to the outer surface of the mounting platform (309) by a set of screws.

5. The extrusion resistance testing device for a high-voltage power distribution box for new energy vehicles according to claim 1, characterized in that: The mounting plate (5); A set of baffles (51) are fixedly connected to the outer surface of the mounting plate (5) with corresponding screws, and each baffle (51) is provided on both sides of the top of the slide groove (21); A set of distribution box placement slots (52) are screwed and fixedly installed on the top of the baffle (51), and the outer surface of each baffle (51) is screwed and fixedly connected to the outer surface of the mounting plate (5).

6. The extrusion resistance testing device for a high-voltage power distribution box of a new energy vehicle according to claim 4, characterized in that: The extrusion structure mounting flange (4); Each extrusion structure is fitted with a flange (4) for changing different test tools.

7. The extrusion resistance testing device for a high-voltage power distribution box for new energy vehicles according to claim 6, characterized in that: The extrusion structure mounting flange (4); Each of the extrusion structures is mounted on a flange (4), and the types of punches that can be installed are disc punches, conical punches, conical punches and edge punches.

8. The extrusion resistance testing device for a high-voltage power distribution box of a new energy vehicle according to claim 5, characterized in that: The baffle (51); Each of the baffles (51) prevents the limiting sliding assembly (308) from sliding excessively, causing it to derail.

9. The extrusion resistance testing device for a high-voltage power distribution box of a new energy vehicle according to claim 5, characterized in that: The power distribution box placement slot (52); The function of the distribution box placement slot (52) is to place the distribution box. The distribution box can be adjusted in direction during testing to test different sides. Each of the aforementioned power distribution box placement slots (52) is provided with a circuit interface for connecting to the power distribution box circuit.

10. A device for testing the compressive strength of a high-voltage power distribution box for new energy vehicles according to claim 8, characterized in that: Each extrusion structure mounting flange (4) is fitted with the punch after installation and engages with the interior of the distribution box placement slot (52).

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