New energy automobile function fault-tolerant testing device

Abstract

The utility model discloses new energy automobile function fault tolerance testing arrangement relates to new energy automobile technical field, including the slope board hinged in the bottom plate end, the upper surface of slope board is seted up with the round tank, the inside rotation of round tank is provided with the carousel, the upper surface of carousel is seted up with the recess, the inside fixed mounting of recess has the axle rod, and the axle rod is rotatably provided with the flap, and the both ends of axle rod are all equipped with the torsional spring, the inner wall of recess is fixedly connected with the limit strip, and the limit strip is close to the axle rod, this new energy automobile function fault tolerance testing arrangement is through setting carousel, axle rod, flap and so on structure, neither influence vehicle normal climbing, and also can realize instant blocking when the vehicle appears the risk of coasting, and the mechanical clamping of flap and wheel realizes instant blocking, and effectively intercepts the coasting impact force, and also can realize the flexible switching of climbing blocking and downhill passing, need not manual dismounting or adjusting the blocking part, improve the use efficiency of new energy automobile function fault tolerance testing arrangement.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a functional fault-tolerant testing device for new energy vehicles. Background Technology

[0002] Low-battery ramp testing is a key scenario for verifying the performance and safety of new energy vehicles, directly impacting their power reliability, safety protection capabilities, and user experience under extreme conditions. When the remaining battery charge (SOC) of a new energy vehicle falls below 10%, the Battery Management System (BMS) activates a power limiting strategy to prevent battery over-discharge damage, leading to a significant decrease in motor output torque and power. Ramp conditions require overcoming gravitational forces, rolling resistance, and mechanical losses simultaneously, placing extremely high demands on the coordinated output capability of the powertrain (battery-motor-electronic control) and the response speed of the control system. This test not only verifies the battery's peak discharge capacity under low-battery conditions, the stability of the motor's continuous torque output, and the optimization effect of the vehicle control unit (VCU) strategy, but it is also a core verification step ensuring safe use by users in real-world scenarios such as mountain driving, exiting underground parking garages, and driving on highway ramps. Furthermore, it provides crucial data support for vehicle compliance certification, product iteration and upgrades, and the selection of core components.

[0003] Current protective measures for potential safety risks such as vehicle rollback and sudden power drop during low-battery hill-climbing tests for new energy vehicles are significantly inadequate, lacking dedicated external stopping structures. The industry's current protection methods primarily rely on the vehicle's own systems, such as the braking lock functions of Electronic Parking Brake (EPB), Auto Hold, or Hill Start Assist Control (HAC), which restrict motor reversal or apply mechanical braking to suppress rollback. Some testing scenarios use simple wedge-shaped wooden blocks placed under the wheels as passive stopping devices, or rely on test personnel to observe and manually apply emergency braking. However, in low-battery conditions, the vehicle's electronic control system may malfunction due to voltage drops and signal delays. Simple wedge-shaped wooden blocks lack sufficient stopping strength and positioning stability, making them unable to withstand the impact of vehicle rollback. Manual emergency braking suffers from reaction lag, and neither method fundamentally avoids safety risks, easily leading to vehicle collisions, equipment damage, or even personal injury.

[0004] Therefore, it is necessary to propose a functional fault-tolerant testing device for new energy vehicles to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a fault-tolerant testing device for new energy vehicles, in order to solve the problems that the vehicle's own electronic control system may fail due to voltage drop and signal delay when the battery is low, the simple wedge-shaped wooden block has insufficient stopping strength and poor positioning stability, making it difficult to cope with the impact force when the vehicle rolls away, and the manual emergency braking has a lag in response. None of these can fundamentally avoid safety risks and are likely to lead to safety accidents such as vehicle collisions, equipment damage, or even personal injury.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a functional fault-tolerant testing device for new energy vehicles, comprising a base plate and a slope plate hinged to the end of the base plate; The upper surface of the slope plate is provided with a circular groove, and a rotatable turntable is provided inside the circular groove. The upper surface of the turntable is provided with a groove, and a shaft and a flap connecting the shaft are installed inside the groove. The flap moves within the groove with the shaft as the center. Both ends of the shaft are fitted with torsion springs, one end of the torsion spring is fixedly connected to the shaft, and the other end is fixedly connected to the flap. A limiting strip is fixedly connected to the inner wall of the groove, and the limiting strip extends towards the shaft along the movement trajectory of the flap.

[0007] Preferably, a motor is fixedly installed on the lower surface of the slope plate, and a through groove is opened on the slope plate for the motor drive shaft to pass through. The turntable is fixedly connected to the motor drive shaft.

[0008] Preferably, a first electric telescopic cylinder is provided between the slope plate and the bottom plate.

[0009] Preferably, an arc cylinder is fixedly installed on the lower surface of the slope plate, an arc plate is slidably arranged inside the arc cylinder, the bottom end of the arc plate is fixedly connected to the base plate, a bracket is fixedly connected to the side wall of the arc cylinder, an electric push rod is fixedly connected to the bracket, a limit rod is fixedly connected to the telescopic end of the electric push rod, and a side hole for the limit rod to pass through is opened on the arc cylinder, and multiple through holes that cooperate with the limit rod are opened on the arc plate.

[0010] Preferably, a flat plate is hinged to the end of the slope away from the base plate. The flat plate is parallel to the base plate, and an adjustment assembly is provided between the flat plate and the base plate. The adjustment assembly includes an electric slide rail, an electric slider, and a second electric telescopic cylinder. The electric slide rail is fixedly installed on the base plate, the electric slider is slidably mounted on the electric slide rail, the fixed end of the second electric telescopic cylinder is fixedly connected to the electric slider, and the telescopic end of the second electric telescopic cylinder is fixedly connected to the flat plate.

[0011] The technical effects and advantages of this utility model are as follows: 1. This utility model, by setting up a turntable, axle, flap and other structures, does not affect the normal climbing of the vehicle, and can immediately stop the vehicle when there is a risk of slipping, by mechanically engaging the flap with the wheel, effectively intercepting the impact force of slipping. At the same time, it can also realize flexible switching between climbing and stopping and downhill passage without the need for manual disassembly or adjustment of the stopping components, thus improving the efficiency of the new energy vehicle functional fault tolerance test device. 2. By setting up structures such as arc cylinders, arc plates, and adjustment components, this invention achieves dynamic adaptation between slope adjustment and transition support, while forming a double-insurance structure to improve the reliability and safety of the testing device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the new energy vehicle functional fault-tolerant testing device of this utility model.

[0014] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0015] Figure 3 This is a cross-sectional structural diagram of the new energy vehicle functional fault-tolerant testing device of this utility model.

[0016] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0017] Figure 5 This is a schematic diagram of the arc cylinder and arc plate structure of this utility model.

[0018] In the diagram: 1. Base plate; 2. Slope plate; 3. Flat plate; 4. Circular groove; 5. Turntable; 501. Groove; 6. Shaft; 7. Flip plate; 8. Torsion spring; 9. Motor; 10. Limiting bar; 11. First electric telescopic cylinder; 12. Second electric telescopic cylinder; 13. Electric slide rail; 14. Electric slider; 15. Arc cylinder; 16. Arc plate; 17. Bracket; 18. Electric push rod; 19. Through hole; 20. Side hole; 21. Limiting rod. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the new energy vehicle functional fault-tolerant testing device proposed according to this utility model. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0020] This utility model provides, for example Figures 1-5 The new energy vehicle functional fault-tolerant testing device shown includes a base plate 1, which is made of Q235 cold-rolled steel plate and fixed to the ground in pre-set mounting holes using M12 expansion bolts. The mounting holes are spaced 500mm × 500mm apart to ensure a stable connection between the base plate 1 and the ground and to prevent displacement during testing. One end of the base plate 1 is hinged to a ramp 2, the surface of which is treated with an anti-slip pattern and has a friction coefficient of not less than 0.8, enabling low-battery ramp testing and meeting the requirements of different vehicle models.

[0021] The upper surface of the slope plate 2 is provided with a circular groove 4. A turntable 5 is rotatably mounted inside the circular groove 4 via a ball bearing. The upper surface of the turntable 5 is provided with a groove 501. A shaft 6 is fixedly installed inside the groove 501 by welding. A flap 7 is rotatably mounted on the shaft 6. Torsion springs 8 are fitted at both ends of the shaft 6. One end of the torsion spring 8 is fixedly connected to the shaft 6, and the other end of the torsion spring 8 is fixedly connected to the flap 7. The torsion springs 8 are provided to assist the flap 7 in resetting.

[0022] A limiting strip 10 is fixedly connected to the inner wall of the groove 501. The limiting strip 10 is made of high-strength steel. The limiting strip 10 is close to the shaft 6 and abuts against the flip plate 7 to limit the flip angle of the flip plate 7.

[0023] A motor 9 is fixedly installed on the lower surface of the slope plate 2. The motor 9 is a servo motor with a rated power of 1.5-2.5kW and an adjustable speed range of 0-30r / min. A through groove is opened on the slope plate 2 through which the drive shaft of the motor 9 passes. The diameter of the through groove is 5-8mm larger than that of the drive shaft of the motor 9. The turntable 5 is fixedly connected to the drive shaft of the motor 9 by a flat key. The motor 9 can drive the turntable 5 to rotate precisely.

[0024] During the hill climb test, shaft 6 is located at the bottom end of groove 501 (refer to...). Figure 3 , Figure 4The end of the flap 7 furthest from the axle 6 flips upward under the elastic support of the torsion spring 8, and the flap 7 tightly abuts against the limiting strip 10, forming a stable stopping structure. When the new energy vehicle climbs up the slope 2 in a low-battery state, the wheels will generate downward pressure when they run over the flap 7. The flap 7 rotates around the axle 6 and retracts into the groove 501. After the wheels have completely passed the flap 7, the torsion spring 8 resets and drives the flap 7 to abut against the limiting strip 10 again. This structure does not affect the vehicle's normal climbing, and can achieve immediate stopping when the vehicle is at risk of slipping, through the mechanical engagement of the flap 7 and the wheel, effectively intercepting the impact force of slipping. It solves the problem of insufficient stopping strength of traditional wedge-shaped wooden blocks, reduces testing risks, and has the effect of fault tolerance in low-battery climbing tests.

[0025] The test was completed. When the vehicle turned around and went downhill, the battery was still in a low charge state. Although there might be risks due to the unresolved power limitation of the drive motor and the delayed response of the regenerative braking, the core test requirements of the scenarios were clearly different: During the uphill phase, the focus was on verifying power tolerance and preventing the vehicle from rolling backwards. Because the vehicle had to overcome the force of gravity, the powertrain was prone to torque attenuation and a sudden drop in power, resulting in a very high risk of rolling backwards. The device, through a stopping structure consisting of a flap 7, a torsion spring 8, and a limiting strip 10, could retract the flap 7 when the wheels passed normally and mechanically engage to stop the vehicle from rolling backwards, precisely addressing the core safety hazard. During the downhill phase, the focus was on verifying braking coordination and smooth passage. Non-repetitive stopping: When going downhill, the vehicle relies on gravitational potential energy to drive. The risk of rolling back is essentially due to excessive speed and loss of control. The core of safety protection is the braking system (mechanical braking + energy recovery), and the braking system is still in basic working condition when the battery is low. At this time, the turntable 5 is driven by the motor 9 to rotate 180°, so that the axle 6 rotates synchronously to the top position of the groove 501. After the original stopping structure flips with the turntable 5, the wheels will generate downward pressure when they run over the flap 7. The flap 7 rotates around the axle 6 and is retracted into the interior of the groove 501, which will not obstruct the vehicle's descent. This achieves flexible switching between climbing stopping and downhill passage without the need for manual disassembly or adjustment of the stopping components.

[0026] In summary, this utility model, by setting up structures such as turntable 5, shaft 6, and flap 7, not only does not affect the vehicle's normal climbing, but also can immediately stop the vehicle when there is a risk of slipping, by mechanically engaging the flap 7 with the wheels, effectively intercepting the impact force of slipping. At the same time, it can also achieve flexible switching between climbing and downhill passage without the need for manual disassembly or adjustment of the stopping components, thus improving the efficiency of the new energy vehicle functional fault-tolerant testing device.

[0027] The fixed end of the first electric telescopic cylinder 11 is hinged to the base plate 1, and the telescopic end of the first electric telescopic cylinder 11 is hinged to the bottom of the slope plate 2, which is used to adjust the climbing angle of the slope plate 2.

[0028] A flat plate 3 is hinged to the end of the ramp 2 away from the base plate 1. The flat plate 3 has a large area and can be used for vehicles to turn around. The flat plate 3 uses the same material and anti-slip treatment as the ramp 2. The flat plate 3 is distributed parallel to the base plate 1. An adjustment component is set between the flat plate 3 and the base plate 1. The adjustment component includes an electric slide rail 13, an electric slider 14, and a second electric telescopic cylinder 12. The electric slide rail 13 is fixedly installed on the base plate 1. The electric slider 14 is slidably set on the electric slide rail 13. The fixed end of the second electric telescopic cylinder 12 is fixedly connected to the electric slider 14. The telescopic end of the second electric telescopic cylinder 12 is fixedly connected to the flat plate 3.

[0029] The first electric telescopic cylinder 11, electric slide rail 13, electric slider 14, and second electric telescopic cylinder 12 are all connected to the factory's power supply.

[0030] The regulating component and the first electric telescopic cylinder 11 are synchronously and collaboratively controlled by a PLC controller. The PLC controller communicates with each actuator via a CAN bus, with a response delay of no more than 10ms, ensuring consistent action. (Refer to...) Figure 3 When the slope of ramp 2 needs to be increased, the operator inputs the target slope parameters through the control terminal, and the PLC controller immediately sends a linkage command: on the one hand, it controls the extension end of the first electric telescopic cylinder 11 to extend outward, pushing ramp 2 to rotate upward around the hinge end with the base plate 1, and the tilt angle increases synchronously; on the other hand, it controls the electric slider 14 to move smoothly along the electric slide rail 13 towards ramp 2, while simultaneously driving the extension end of the second electric telescopic cylinder 12 to extend synchronously. Through displacement compensation and parallelism calibration, the plate 3 is kept parallel to the base plate 1 at all times, ensuring a smooth transition when the vehicle drives from ramp 2 into plate 3. Conversely, when the slope of ramp 2 needs to be decreased, the extension end of the first electric telescopic cylinder 11 retracts, the electric slider 14 moves away from ramp 2 along the electric slide rail 13, and the extension end of the second electric telescopic cylinder 12 retracts synchronously, and plate 3 maintains a horizontal posture, realizing dynamic adaptation of slope adjustment and transition support.

[0031] An arc cylinder 15 is fixedly installed on the lower surface of the slope plate 2 by welding. The arc cylinder 15 is made of seamless steel pipe bent into shape, and its curvature is consistent with the rotation trajectory of the slope plate 2. An arc plate 16 is slidably installed inside the arc cylinder 15. The curvature of the arc plate 16 is adapted to the inner wall of the arc cylinder 15. The bottom end of the arc plate 16 is fixedly connected to the base plate 1 by welding. A bracket 17 is fixedly connected to the side wall of the arc cylinder 15 by welding. The bracket 17 is made of angle steel structure. An electric push rod 18 is fixedly connected to the bracket 17 by bolts. A limit rod 21 is fixedly connected to the telescopic end of the electric push rod 18. The limit rod 21 is made of high-strength, large-size stainless steel. The arc cylinder 15 has a side hole 20 for the limit rod 21 to pass through. The arc plate 16 has multiple through holes 19 that cooperate with the limit rod 21. The multiple through holes 19 are evenly distributed.

[0032] Once the ramp 2 is adjusted to the target climbing angle, the PLC controller sends a command to extend the electric push rod 18, pushing the limit rod 21 through the side hole 20 and into the corresponding through hole 19, thus achieving mechanical locking between the arc cylinder 15 and the arc plate 16, forming a double-safety structure. Even if the first electric telescopic cylinder 11 experiences hydraulic leakage or other malfunctions, the cooperation between the arc cylinder 15 and the arc plate 16 can effectively support the ramp 2 to maintain its current angle, preventing the ramp 2 from suddenly falling back and causing a safety accident, further improving the reliability and safety of the testing device.

[0033] In summary, by setting up structures such as the arc cylinder 15, the arc plate 16, and the adjustment components, the present invention achieves dynamic adaptation between slope adjustment and transition support, while forming a double insurance structure to improve the reliability and safety of the testing device.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A functional fault-tolerant testing device for new energy vehicles, characterized in that, Includes a base plate (1) and a slope plate (2) hinged to the end of the base plate (1); The upper surface of the slope plate (2) is provided with a circular groove (4), and a rotatable turntable (5) is provided inside the circular groove (4). The upper surface of the turntable (5) is provided with a groove (501). A shaft (6) and a flap (7) connecting the shaft (6) are installed inside the groove (501). The flap (7) moves around the shaft (6) in the groove (501). Both ends of the shaft (6) are fitted with torsion springs (8), one end of the torsion spring (8) is fixedly connected to the shaft (6), and the other end is fixedly connected to the flap (7); A limiting strip (10) is fixedly connected to the inner wall of the groove (501), and the limiting strip (10) extends towards the shaft (6) onto the movement trajectory of the flip plate (7).

2. The new energy vehicle functional fault-tolerant testing device according to claim 1, characterized in that, A motor (9) is fixedly installed on the lower surface of the slope plate (2). A through groove is provided on the slope plate (2) through which the drive shaft of the motor (9) passes. The turntable (5) is fixedly connected to the drive shaft of the motor (9).

3. The new energy vehicle functional fault-tolerant testing device according to claim 1, characterized in that, A first electric telescopic cylinder (11) is provided between the slope plate (2) and the bottom plate (1).

4. The new energy vehicle functional fault-tolerant testing device according to claim 1, characterized in that, An arc cylinder (15) is fixedly installed on the lower surface of the slope plate (2). An arc plate (16) is slidably arranged inside the arc cylinder (15). The bottom end of the arc plate (16) is fixedly connected to the base plate (1). A bracket (17) is fixedly connected to the side wall of the arc cylinder (15). An electric push rod (18) is fixedly connected to the bracket (17). A limit rod (21) is fixedly connected to the telescopic end of the electric push rod (18). A side hole (20) for the limit rod (21) to pass through is opened on the arc cylinder (15). A plurality of through holes (19) that cooperate with the limit rod (21) are opened on the arc plate (16).

5. The new energy vehicle functional fault-tolerant testing device according to claim 1, characterized in that, The slope plate (2) is hinged to a flat plate (3) at one end away from the base plate (1). The flat plate (3) is parallel to the base plate (1). An adjustment assembly is provided between the flat plate (3) and the base plate (1). The adjustment assembly includes an electric slide rail (13), an electric slider (14), and a second electric telescopic cylinder (12). The electric slide rail (13) is fixedly installed on the base plate (1). The electric slider (14) is slidably installed on the electric slide rail (13). The fixed end of the second electric telescopic cylinder (12) is fixedly connected to the electric slider (14). The telescopic end of the second electric telescopic cylinder (12) is fixedly connected to the flat plate (3).

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