New energy automobile battery box anti-collision support

Abstract

The utility model discloses a new energy automobile battery box anti -collision support relates to new energy automobile battery package field, the utility model discloses a battery package, the protective cover plate is located below battery package to install through the bolt, and the protective cover plate installs anti -collision mechanism to the side to vehicle advancing direction, the anti -collision mechanism includes first limit board, second limit board, and the inside of first limit board and second limit board forms the air slot, and the inside swing of air slot is provided with the anti -collision beam, the utility model discloses a protective cover plate, and the electric push rod drives the anti -collision beam to lift, realizes the initiative adjustment of protective height, and the lifting force is lifted when the city road surface, and the obstacle is contacted preferentially when the non -paved road surface falls, and forms the front -mounted protective barrier, and this dynamic adjustment ability breaks through the limitation of traditional fixed type guard plate, and the adaptability of battery package to different road conditions is improved significantly, and the collision protection of battery package is further improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle battery packs, specifically a new energy vehicle battery box anti-collision bracket. Background Technology

[0002] The battery pack of a new energy vehicle is the core energy storage unit of the vehicle. It is mainly composed of cells, modules, battery management system, thermal management system, structural components and electrical connectors. Its technology is developing towards improving energy density, accelerating charging speed, enhancing safety, and optimizing space utilization through integrated designs such as CTP / CTC.

[0003] Currently, the battery packs of new energy vehicles are all installed at the bottom of the vehicle chassis. During driving, debris on the road may collide and rub against the bottom surface of the battery pack. In actual protection, a protective cover is installed on the bottom surface of the battery pack to avoid direct friction and collision with debris. However, there is still a problem in actual use. Specifically, traditional protective covers can only protect against collisions and friction from small debris. When faced with larger debris, it may cause large dents and holes on the protective cover and the battery pack, which seriously affects the service life of the battery pack. In view of this, the inventors urgently need to design an anti-collision mechanism to improve the protective cover's ability to cope with different road conditions. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a new energy vehicle battery box anti-collision bracket to solve the technical problem that the limitations of traditional protective covers become apparent when facing more severe bottom impacts.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a new energy vehicle battery box anti-collision bracket, including a battery pack and a protective cover plate, wherein the protective cover plate is located below the battery pack and is installed by bolts, and an anti-collision mechanism is installed on the side of the protective cover plate facing the vehicle's forward direction;

[0006] The anti-collision mechanism includes a first limiting plate and a second limiting plate. A slot is formed on the inner side of the first limiting plate and the second limiting plate. An anti-collision beam is movably arranged on the inner side of the slot. At least two sets of electric push rods are installed between the upper part of the anti-collision beam and the protective cover plate. The anti-collision beam slides up and down on the inner side of the slot through the electric push rods.

[0007] When paving roads in the city, the crash beams are retracted, raising the lowest point of the crash beams;

[0008] When the road surface is unpaved, the crash beam extends out of the slot to lower the lowest point of the crash beam.

[0009] By adopting the above technical solution, the dynamic adjustability of the bottom protection of the battery pack is achieved. When the anti-collision beam is retracted on paved urban roads, it can improve the vehicle's passability. When the anti-collision beam is extended on unpaved roads, it can preferentially contact obstacles to form a front protection barrier, effectively preventing the protective cover and battery pack from being directly impacted.

[0010] Furthermore, the electric actuator is electrically connected to the vehicle's internal power supply via a controller, and its control signal is associated with the vehicle's driving mode: urban commuting mode and off-road mode.

[0011] By adopting the above technical solutions, intelligent and automated control is achieved, which can switch the optimal protection state according to road conditions, greatly improving the user experience. At the same time, this setting is deeply integrated with the vehicle's electronic and electrical architecture, and the controller can directly call the vehicle's internal power supply and signals, ensuring the reliability and integration of the system operation.

[0012] Furthermore, the surface of the first limiting plate is provided with a sliding groove and a slot, and one side of the anti-collision beam engages and slides with the first limiting plate through a sliding piece and a sliding groove.

[0013] By adopting the above technical solution, a groove is opened on the surface of the first limiting plate, and a sliding piece is used to guide the anti-collision beam to slide, which ensures the accuracy and stability of the anti-collision beam's movement trajectory during the impact process, prevents mechanism failure caused by off-center loading or jamming, and enables the impact force to be effectively transmitted along the designed path.

[0014] Furthermore, the slot is located on one side of the slide groove, forming a partially collapsed area of ​​the first limiting plate, which prevents a large amount of impact force from being transmitted to the battery pack.

[0015] By adopting the above technical solution, the slotted design forms a carefully calculated mechanically weak area on the first limiting plate, namely the preset collapse area. When the anti-collision beam is subjected to a huge impact, this area will preferentially undergo controllable plastic deformation or fracture, thereby absorbing and dissipating a large amount of collision energy.

[0016] Furthermore, an electronic collision sensor is installed on one side of the anti-collision beam. The electronic collision sensor detects a collision signal and transmits the signal to the control center. Based on the comparison between the collision force and a preset threshold, when the force exceeds the preset threshold, the pyrotechnic switch is controlled to cut off the high voltage.

[0017] By adopting the above technical solution, real-time perception and accurate judgment of collision events are achieved. The system can distinguish between minor scratches and severe impacts, and will only trigger subsequent protection actions when the collision force exceeds the preset safety threshold, effectively avoiding false triggering.

[0018] Furthermore, the protective cover includes a cover body, the surface of which is arrayed with a plurality of raised strips, and the outer periphery of the cover body is fixed with a folded edge, which is bolted to the battery pack.

[0019] By adopting the above technical solution, the array of convex strips forms a reinforcing rib structure, which significantly improves the bending and impact resistance of the cover plate itself, making it less prone to dents or cracks when subjected to stone impacts or slight bottoming.

[0020] Furthermore, the battery pack includes a battery pack body, a protective top cover is bolted to the upper surface of the battery pack body, and a protective bottom cover is bolted to the lower surface of the battery pack body.

[0021] By adopting the above technical solution, this modular design allows each component to function independently, and the protective bottom cover can serve as the first line of structural defense against bottom impacts.

[0022] In summary, the present invention has the following main advantages:

[0023] 1. This utility model achieves active adjustment of the protective height by using a protective cover plate and an electric push rod to drive the anti-collision beam to rise and fall. When on urban roads, it lifts the beam, and when on unpaved roads, it lowers the beam to make priority contact with obstacles, forming a front protective barrier. This dynamic adjustment capability breaks through the limitations of traditional fixed protective plates, significantly improves the adaptability of the battery pack to different road conditions, and further enhances the collision protection of the battery pack.

[0024] 2. In this utility model, the electronic collision sensor monitors the collision intensity in real time and immediately triggers high-voltage power cut-off when the threshold is exceeded, forming a dual protection system that combines electromechanical components. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0027] Figure 3 This is a bottom view of the structure of this utility model;

[0028] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A;

[0029] Figure 5 This utility model Figure 3 A magnified structural diagram at point B in the middle.

[0030] In the diagram: 1. Battery pack; 101. Battery pack body; 102. Protective top cover; 103. Protective bottom cover; 2. Protective cover plate; 201. Cover plate body; 202. Protruding strip; 203. Folded edge; 3. Anti-collision mechanism; 301. First limiting plate; 302. Second limiting plate; 303. Anti-collision beam; 304. Electric push rod; 305. Slide groove; 306. Slot; 307. Sliding plate. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In this embodiment:

[0033] A type of anti-collision bracket for battery boxes in new energy vehicles, such as Figure 1-5 As shown, it includes a battery pack 1 and a protective cover 2. The protective cover 2 is located below the battery pack 1 and is installed by bolts. An anti-collision mechanism 3 is installed on the side of the protective cover 2 facing the direction of vehicle movement.

[0034] The anti-collision mechanism 3 includes a first limiting plate 301 and a second limiting plate 302. The inner sides of the first limiting plate 301 and the second limiting plate 302 are formed with a slot. An anti-collision beam 303 is movably arranged inside the slot. At least two sets of electric push rods 304 are installed between the upper part of the anti-collision beam 303 and the protective cover plate 2. The anti-collision beam 303 slides up and down inside the slot through the electric push rods 304.

[0035] When paving roads in the city, the crash beam 303 is retracted, and the lowest point of the crash beam 303 is raised;

[0036] When the road surface is unpaved, the anti-collision beam 303 extends out a groove to lower the lowest point of the anti-collision beam 303.

[0037] The bottom protection of the battery pack 1 is dynamically adjustable. When the anti-collision beam 303 is retracted on paved urban roads, it can improve the vehicle's passability. When the anti-collision beam 303 is extended on unpaved roads, it can make priority contact with obstacles to form a front protection barrier, effectively preventing the protective cover 2 and the battery pack 1 from being directly impacted. At the same time, it breaks through the limitations of traditional fixed guard plates and achieves adaptive protection through electromechanical integration structure. It not only takes into account the economy of daily driving, but also enhances the safety performance under complex road conditions, and significantly extends the service life of the bottom protective cover 103 of the battery pack 1.

[0038] See Figure 4The electric actuator 304 is electrically connected to the vehicle's internal power supply via a controller. Its control signals are associated with the vehicle's driving modes: urban commuting mode and off-road mode, achieving intelligent and automated control. It can switch to the optimal protection state according to road conditions, greatly improving the user experience. At the same time, this setting is deeply integrated with the vehicle's electronic and electrical architecture. By directly calling the vehicle's internal power supply and signals through the controller, it ensures the reliability and integration of the system operation, avoids compatibility and stability issues caused by external control systems, and meets the design requirements of automotive-grade functional safety.

[0039] See Figure 4 , Figure 5 The surface of the first limiting plate 301 is provided with a sliding groove 305 and a slot 306. One side of the anti-collision beam 303 is engaged and slids with the first limiting plate 301 through a sliding piece 307 and the sliding groove 305. The sliding groove 305 is provided on the surface of the first limiting plate 301, and the sliding piece 307 is used to guide the sliding of the anti-collision beam 303, ensuring the accuracy and stability of the movement trajectory of the anti-collision beam 303 during the impact, preventing mechanism failure due to off-center loading or jamming, and enabling the impact force to be effectively transmitted along the designed path. At the same time, the cooperation between the sliding groove 305 and the sliding piece 307 forms a robust sliding pair, which can withstand and transmit part of the impact force. Working together with the collapsible area of ​​the slot 306, it constitutes an efficient energy management mechanism.

[0040] See Figure 5 The slot 306 is located on one side of the slide 305, forming a partial collapse area of ​​the first limiting plate 301, which prevents a large amount of impact force from being transmitted to the battery pack 1. The design of the slot 306 forms a carefully calculated mechanically weak area on the first limiting plate 301, namely the preset collapse area. When the anti-collision beam 303 is subjected to a huge impact, this area will preferentially undergo controllable plastic deformation or fracture, thereby absorbing and dissipating a large amount of collision energy. At the same time, this sacrificial setting can effectively block the peak impact force inside the anti-collision mechanism 3, greatly reducing the impact force that is finally transmitted to the battery pack body 101, playing a protective role, and fundamentally reducing the risk of the battery pack deforming, short-circuiting or thermal runaway due to severe impact.

[0041] See Figure 4 , Figure 5An electronic collision sensor is installed on one side of the anti-collision beam 303. The electronic collision sensor detects a collision signal and transmits the signal to the control center. Based on the comparison between the collision force and a preset threshold, when the force exceeds the preset threshold, the pyrotechnic switch is controlled to cut off the high voltage. This achieves real-time perception and accurate judgment of collision events. The system can distinguish between minor scratches and severe impacts. Subsequent protective actions are only triggered when the collision force exceeds the preset safety threshold, effectively avoiding false triggering. At the same time, this signal is linked with the pyrotechnic switch, which can quickly cut off the high voltage of the entire vehicle within milliseconds. This is not only a key electrical safety measure after the mechanical protection of the anti-collision beam 303, but also eliminates the risk of fire caused by short circuits in high-voltage lines, achieving dual safety protection combining electromechanical components.

[0042] See Figure 1 , Figure 2 The protective cover 2 includes a cover body 201. The surface of the cover body 201 is arrayed with several protrusions 202. The outer periphery of the cover body 201 is fixed with a flange 203. The flange 203 is bolted to the battery pack 1. The arrayed protrusions 202 form a reinforcing rib structure, which significantly improves the bending and impact resistance of the cover itself, making it less prone to dents or cracks when subjected to stone impacts or slight bottoming. At the same time, the sturdy flange 203 on the outer periphery not only provides an installation surface for connection with the protective bottom cover 103 of the battery pack 1, but its vertical edge structure itself also forms a sturdy frame, enhancing the structural integrity of the integral protective cover 2, so that it can better distribute the impact force evenly to the installation point of the battery pack 1.

[0043] See Figure 1 , Figure 2 The battery pack 1 includes a battery pack body 101. A protective top cover 102 is bolted to the upper surface of the battery pack body 101, and a protective bottom cover 103 is bolted to the lower surface of the battery pack body 101. This modular design allows each component to function independently. The protective bottom cover 103 can serve as the first line of defense against bottom impacts. At the same time, this structure is easy to maintain and replace. If the protective bottom cover 103 is damaged in extreme cases, it can be disassembled and replaced separately without changing the core battery pack body 101 and internal modules. This significantly reduces maintenance costs and time and improves the maintainability of the entire battery pack system.

[0044] The implementation principle of this embodiment is as follows: The vehicle selects the driving mode according to the road conditions. The controller commands the electric push rod 304 to extend and retract, driving the anti-collision beam 303 to rise and fall in the slot formed by the first limiting plate 301 and the second limiting plate 302, thereby adjusting the ground clearance. When a bottom collision occurs, the impact force first acts on the anti-collision beam 303, which slides along the sliding groove 305 on the first limiting plate 301 through the sliding piece 307 on one side, guiding the energy to be transmitted backward. If the impact force is too large, the slotted area 306 on the first limiting plate 301 will deform as a preset crumple zone, absorbing a large amount of energy and greatly reducing the impact force transmitted to the battery pack body 101. At the same time, the electronic collision sensor installed on the anti-collision beam 303 monitors the collision signal in real time. Once the preset threshold is exceeded, the high voltage is immediately triggered to ensure electrical safety. The entire mechanism is installed on the protective cover plate 2, which is connected to the protective bottom cover 103 of the battery pack 1 through the folded edge 203 on its periphery, together forming a complete multi-level protection system from active warning to passive energy absorption.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A collision protection bracket for a battery box of a new energy vehicle, characterized in that: Includes a battery pack (1) and a protective cover (2). The protective cover (2) is located below the battery pack (1) and is installed by bolts. An anti-collision mechanism (3) is installed on the side of the protective cover (2) facing the direction of vehicle movement. The anti-collision mechanism (3) includes a first limiting plate (301) and a second limiting plate (302). The inner sides of the first limiting plate (301) and the second limiting plate (302) are formed with a slot. An anti-collision beam (303) is movably arranged inside the slot. At least two sets of electric push rods (304) are installed between the upper part of the anti-collision beam (303) and the protective cover plate (2). The anti-collision beam (303) slides up and down inside the slot through the electric push rods (304). When paving roads in the city, the crash beam (303) is retracted, raising the lowest point of the crash beam (303); When the road surface is unpaved, the anti-collision beam (303) extends out of the groove to lower the lowest point of the anti-collision beam (303).

2. The anti-collision bracket for the battery box of a new energy vehicle according to claim 1, characterized in that: The electric actuator (304) is electrically connected to the vehicle's internal power supply via a controller, and its control signal is associated with the vehicle's driving mode: urban commuting mode and off-road mode.

3. The anti-collision bracket for the battery box of a new energy vehicle according to claim 1, characterized in that: The surface of the first limiting plate (301) is provided with a sliding groove (305) and a slot (306). One side of the anti-collision beam (303) is engaged and slids with the first limiting plate (301) through a sliding piece (307) and a sliding groove (305).

4. The anti-collision bracket for the battery box of a new energy vehicle according to claim 3, characterized in that: The slot (306) is located on one side of the slide (305), forming a partial collapse area of ​​the first limiting plate (301) to prevent a large amount of impact force from being transmitted to the battery pack (1).

5. The anti-collision bracket for the battery box of a new energy vehicle according to claim 1, characterized in that: An electronic collision sensor is installed on one side of the anti-collision beam (303). The electronic collision sensor detects a collision signal and transmits the signal to the control center. Based on the comparison between the collision force and a preset threshold, when the force exceeds the preset threshold, the pyrotechnic switch is controlled to cut off the high voltage.

6. The anti-collision bracket for the battery box of a new energy vehicle according to claim 1, characterized in that: The protective cover (2) includes a cover body (201), the surface of which is arrayed with a plurality of protrusions (202), and the outer periphery of the cover body (201) is fixed with a folded edge (203), which is bolted to the battery pack (1).

7. The anti-collision bracket for the battery box of a new energy vehicle according to claim 1, characterized in that: The battery pack (1) includes a battery pack body (101), a protective top cover (102) is bolted to the upper surface of the battery pack body (101), and a protective bottom cover (103) is bolted to the lower surface of the battery pack body (101).

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