New energy vehicle power battery shockproof fixing mounting bracket

Abstract

The application relates to the technical field of battery support, and discloses a new energy vehicle power battery shockproof fixing and mounting support which comprises a fixing frame and a mounting frame for mounting a power battery; the fixing frame is slidably connected to the bottom of the outer side of the mounting frame, the mounting frame can vertically slide and sink relative to the fixing frame, and a damping shock absorber is arranged between the four corners of the fixing frame and the mounting frame; a protection assembly is arranged at the bottom of the fixing frame, the protection assembly comprises multiple pairs of protection plates, heat dissipation grooves for battery heat dissipation are formed between the adjacent protection plates, the protection assembly can be driven to close the heat dissipation grooves when the mounting frame sinks, and a closed protection surface is formed at the bottom of the fixing frame. The protection plates remain in an open state under the stable working condition of the vehicle, the bottom of the battery is continuously ventilated and heat-dissipated by relying on the heat dissipation grooves, the protection plates are automatically closed to form a fully-closed protection surface at the bottom under the bumping and impacting working condition, and active protection under the bumping working condition is realized.

Description

Technical Field

[0001] This invention relates to the field of battery bracket technology, specifically to a shockproof and fixed mounting bracket for power batteries in new energy vehicles. Background Technology

[0002] Currently, anti-vibration mounting brackets for power batteries in new energy vehicles are important load-bearing and protective structures in the power battery assembly system of new energy vehicles. They are widely used in the installation and fixing of power batteries in various new energy equipment such as new energy passenger vehicles and new energy engineering vehicles. Conventional anti-vibration mounting brackets mainly consist of an outer frame fixing base, an inner load-bearing frame, and shock-absorbing buffer components. The overall frame assembly structure realizes the positioning, clamping, and fixing of the power battery, which can stably fix the power battery to the vehicle chassis. At the same time, the shock-absorbing buffer components buffer the normal bumps and vibrations generated during vehicle driving and operation, effectively reducing the impact of vibration on the power battery structure, ensuring the stability of power battery assembly and basic operational safety, and meeting the routine use needs of power battery daily installation and fixing and basic anti-vibration protection.

[0003] However, the existing technology has the following problems: To improve the impact resistance of the battery bottom, most existing power battery shockproof brackets have a fixed protective plate installed at the bottom of the bracket. Although this can provide shielding protection for the bottom of the power battery, the fixed protective plate is a closed or semi-closed fixed structure. Over time, it blocks the heat dissipation space at the bottom of the battery, which greatly reduces the ventilation and heat dissipation efficiency at the bottom of the battery. This can easily cause heat accumulation at the bottom of the battery, accelerate the high-temperature aging of the battery, and affect the range performance and service life of the power battery in the long run. Summary of the Invention

[0004] The purpose of this invention is to provide a shockproof mounting bracket for power batteries of new energy vehicles in order to solve the above-mentioned problems. It aims to overcome the problem that the existing shockproof brackets for power batteries are prone to poor heat dissipation due to the protective plate at the bottom. Details are described below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a shockproof mounting bracket for a power battery in a new energy vehicle, comprising a fixed frame and a mounting frame for mounting the power battery; the fixed frame is slidably sleeved on the bottom outer side of the mounting frame, and the mounting frame can slide vertically downward relative to the fixed frame; damping shock absorbers are installed between the four corners of the fixed frame and the mounting frame; a protective component is provided at the bottom of the fixed frame, the protective component comprising multiple pairs of protective plates, and heat dissipation grooves are formed between adjacent protective plates for battery heat dissipation; when the mounting frame sinks, it can drive the protective component to close the heat dissipation grooves, forming a closed protective surface at the bottom of the fixed frame.

[0006] Preferably, the guard plate is hinged with connecting rods, and the two connecting rods on each pair of the guard plate are set as a pair. Each pair of connecting rods is hinged with a pressure rod at the end away from the guard plate, and the pressure rod is connected to the bottom of the mounting frame.

[0007] Preferably, under normal conditions, the two sides of each pair of protective plates are curved upwards in a V-shape, forming a heat dissipation groove between adjacent pairs of protective plates. Each pair of connecting rods is arranged in a figure-eight shape. The pressure rod moves down and drives the protective plates to swing downwards through the connecting rods, so that multiple pairs of protective plates fit together to form a closed protective surface.

[0008] Preferably, the inner side of the fixed frame is provided with multiple sliding grooves, and the outer side of the mounting frame is fixed with multiple sliders. The multiple sliders and the multiple sliding grooves correspond one-to-one to form a sliding fit. The fit position of the slider and the sliding groove is reserved with an movable gap. The sliding groove is provided with a flexible pad for filling the movable gap.

[0009] Preferably, the flexible pad is attached and fixed to the inner wall of the slide groove, the exposed side of the flexible pad abuts against the side wall of the slider, and the slider squeezes the flexible pad when sliding horizontally relative to the slide groove.

[0010] Preferably, an energy-absorbing component is provided between the fixed frame and the mounting frame. The energy-absorbing component includes a connecting seat, a pressure plate, an energy-absorbing box, and filler. The connecting seat is installed at the bottom of the mounting frame, the pressure plate is installed at the bottom of the connecting seat, and the energy-absorbing box is installed at the bottom of the fixed frame and vertically corresponds to the pressure plate. The pressure plate is vertically slidably inserted into the inside of the energy-absorbing box.

[0011] Preferably, the energy-absorbing box is filled with a filler material, which is a viscoelastic slow-rebound energy-absorbing material.

[0012] Preferably, the filler is an ACF energy-absorbing material, with multiple layers of ACF energy-absorbing material filling the energy-absorbing box, and the top abutting against the pressure plate.

[0013] Preferably, there are two energy-absorbing components, which are located on two sides of the fixed frame along its length.

[0014] Preferably, the top of the damping shock absorber is hinged to the top corner of the mounting frame, and the bottom of the damping shock absorber is hinged to the bottom corner of the fixed frame.

[0015] The beneficial effects are: 1. This new energy vehicle power battery anti-vibration fixing bracket, through the setting of protective components, uses the vertical downward displacement of the mounting frame relative to the fixed frame as a purely mechanical driving force to realize the adaptive opening and closing switching of multiple pairs of V-shaped protective plates. Under stable vehicle conditions, the protective plates remain open, relying on the heat dissipation grooves to achieve continuous ventilation and heat dissipation at the bottom of the battery. Under bumpy and impact conditions, the protective plates automatically close to form a fully enclosed protective surface at the bottom, preventing foreign objects from hitting the bottom of the power battery, thus achieving active protection under bumpy conditions.

[0016] 2. This new energy vehicle power battery anti-vibration fixing bracket, through the setting of energy absorption components, utilizes the sliding compression of the pressure plate to squeeze the multi-layer ACF artificial cartilage biomimetic metamaterial inside the energy absorption box. Relying on the material's viscoelastic progressive deformation characteristics, it dissipates the ultimate impact energy, effectively rigidly impacts the battery. At the same time, relying on the material's slow delayed rebound characteristics, it eliminates the secondary resonance and secondary impact generated by shock absorption and reset, significantly improving the power battery's protection capability under extreme working conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation frame structure of the present invention; Figure 3 This is a schematic diagram of the flexible pad structure of the present invention; Figure 4 This is a schematic diagram of the protective component structure of the present invention; Figure 5 This is a schematic diagram of the protective plate structure of the present invention; Figure 6 This is a schematic diagram of the energy-absorbing component structure of the present invention; Figure 7 This is a schematic diagram of the energy-absorbing box structure of the present invention.

[0019] The annotations in the attached figures are explained as follows: 1. Fixed frame; 11. Slide groove; 12. Flexible pad; 2. Mounting frame; 21. Slider; 3. Damping shock absorber; 4. Protective components; 41. Guard plate; 42. Connecting rod; 43. Pressure bar; 5. Energy absorption component; 51. Connecting seat; 52. Pressure plate; 53. Energy absorption box; 54. Filler. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0022] Throughout this specification, references to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in one embodiment" or "in another embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0024] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0025] To address the issue of poor heat dissipation caused by the protective plate at the bottom of existing shock-absorbing brackets, this application proposes the following embodiments: Please see Figure 1 - Figure 7 This embodiment discloses a shockproof mounting bracket for power batteries of new energy vehicles. The shockproof mounting bracket is mainly suitable for the installation, fixing and shockproof protection of power batteries of new energy vehicles. The overall structure has multiple functions such as vertical damping and shock absorption, horizontal buffering and limiting, and adaptive heat dissipation and protection. It has strong structural stability and a wide range of working conditions. It can effectively solve the problem of single shock absorption and difficulty in taking heat dissipation and protection into account in traditional power battery brackets.

[0026] The overall structure of the anti-vibration fixed mounting bracket includes a fixed frame 1 and a mounting frame 2 for mounting the power battery. The fixed frame 1 is an integral outer frame fixed base, mainly used for fixed assembly with the vehicle chassis frame to achieve the positioning and installation of the entire bracket; the mounting frame 2 is an inner load-bearing frame, and the power battery is fixedly assembled inside the mounting frame 2 to achieve the positioning and load-bearing of the power battery.

[0027] Furthermore, the fixed frame 1 is slidably sleeved onto the bottom outer side of the mounting frame 2, allowing the mounting frame 2 to slide and sink vertically relative to the fixed frame 1. Sufficient vertical damping stroke is reserved to provide a motion basis for the overall shock absorption and protection structure. Damping shock absorbers 3 are installed between the four corners of the fixed frame 1 and the mounting frame 2. The top of the damping shock absorber 3 is hinged to the top corner of the mounting frame 2, and the bottom of the damping shock absorber 3 is hinged to the bottom corner of the fixed frame 1. The damping shock absorbers 3 arranged at the four corners constitute the main vertical shock absorption structure, which can continuously dampen and buffer the vibration impact during the vertical sliding process of the mounting frame 2, effectively filtering the vertical bumps and vibrations generated during vehicle driving and operation, and avoiding structural damage and loose wiring caused by rigid vibration impact on the power battery.

[0028] In addition, a protective component 4 is provided at the bottom of the fixed frame 1. The protective component 4 serves as an adaptive protection structure for the bottom of the power battery. It includes multiple pairs of protective plates 41, and heat dissipation grooves are formed between adjacent protective plates 41 for battery heat dissipation. Under normal conditions, the heat dissipation grooves remain open, which can continuously ventilate and dissipate heat from the bottom of the power battery, and promptly dissipate the heat generated during the operation of the power battery, avoiding battery heat accumulation, aging, and high-temperature degradation. When the vehicle is driven or subjected to bumps and impacts during operation, causing the mounting frame 2 to sink vertically relative to the fixed frame 1, the downward displacement of the mounting frame 2 can drive the protective component 4 to move synchronously, closing all the heat dissipation grooves and forming a complete closed protective surface at the bottom of the fixed frame 1, preventing foreign objects from hitting the bottom of the power battery and achieving active protection under bumpy conditions.

[0029] Specifically, the protective component 4 is equipped with a hinged transmission structure. Each guard plate 41 is hinged with a connecting rod 42, and two connecting rods 42 are correspondingly set on each pair of guard plates 41. The two connecting rods 42 form a transmission linkage structure. The end of each pair of connecting rods 42 away from the guard plate 41 is hinged with a pressure rod 43. The pressure rod 43 is fixedly connected to the bottom of the mounting frame 2 and moves vertically synchronously with the mounting frame 2. Under normal working conditions, the two sides of each pair of guard plates 41 are tilted upwards in a V-shape. Multiple sets of V-shaped guard plates 41 are evenly arranged, and adjacent pairs of guard plates 41... The space is stably formed into regular heat dissipation grooves to ensure the bottom ventilation and heat dissipation effect. At the same time, each set of connecting rods 42 is arranged symmetrically in a figure-eight shape, so the structure is evenly stressed and the transmission is stable. When the mounting frame 2 is affected by vibration and sinks vertically, it will drive the bottom fixed pressure rod 43 to move down synchronously. The moving pressure rod 43 pushes and pulls the corresponding guard plate 41 downward through the figure-eight arranged connecting rods 42. Multiple pairs of guard plates 41 swing down synchronously and fit together to completely block all heat dissipation grooves, forming a fully covered closed protective surface at the bottom of the fixed frame 1, realizing adaptive protection switching.

[0030] In addition, a precise guiding and horizontal buffer structure is provided between the fixed frame 1 and the mounting frame 2. Multiple evenly arranged grooves 11 are formed on the inner side of the fixed frame 1. Multiple sliders 21, matching the number and position of the grooves 11, are fixed on the outer side of the mounting frame 2. These sliders 21 correspond one-to-one with the grooves 11 to form a precise sliding fit, limiting the vertical sliding of the mounting frame 2 along the trajectory of the grooves 11 and ensuring the stability of the shock-absorbing movement. A reasonable clearance is reserved at the mating position of the sliders 21 and the grooves 11 to buffer slight horizontal offsets. Simultaneously, a flexible pad 12 is provided inside the groove 11 to fill the clearance. The flexible pad 12 is fitted and fixed to the groove. The inner wall of the slide groove 11 and the exposed side of the flexible pad 12 maintain a gap contact with the side wall of the slider 21. When the vehicle generates horizontal inertial force, and the mounting frame 2 causes the slider 21 to slide slightly horizontally relative to the slide groove 11, or when the fixed frame 1 follows the vehicle and slides slightly horizontally relative to the mounting frame 2, the side wall of the slider 21 will squeeze the flexible pad 12. The deformation characteristics of the flexible pad 12 achieve horizontal buffering and limiting, buffering the horizontal shaking impact, suppressing the frame offset noise. At the same time, the flexible pad 12 only buffers and limits the horizontal displacement, does not hinder the vertical sliding stroke of the slider 21, and does not affect the vertical shock absorption function, thus achieving compatibility and adaptation between vertical shock absorption and horizontal buffering.

[0031] It is worth mentioning that an energy-absorbing component 5 is also provided between the fixed frame 1 and the mounting frame 2 to assist in energy absorption, improve shock absorption, and further enhance the protection and safety of the power battery. The energy-absorbing component 5 is assembled between the fixed frame 1 and the mounting frame 2, and specifically includes a connecting seat 51, a pressure plate 52, an energy-absorbing box 53, and a filler 54. The connecting seat 51 is fixedly installed at the bottom of the mounting frame 2, and the pressure plate 52 is fixedly installed at the bottom of the connecting seat 51, moving vertically in sync with the mounting frame 2 and the connecting seat 51. The energy-absorbing box 53 is fixedly installed at the bottom of the fixed frame 1 and is vertically precisely aligned with the pressure plate 52. The pressure plate 52 is vertically slidably inserted into the inside of the energy-absorbing box 53 and can slide vertically back and forth along the internal cavity of the energy-absorbing box 53.

[0032] Specifically, the energy-absorbing box 53 is filled with filler 54, which is a viscoelastic slow-rebound energy-absorbing material. This material exhibits progressive deformation under stress and slow, delayed rebound, eliminating instantaneous rigid rebound and secondary resonance impact. Filler 54 is preferably made of ACF energy-absorbing material (artificial cartilage biomimetic metamaterial), and is filled inside the energy-absorbing box 53 in a multi-layered stacked manner. The top of filler 54 is stably in contact with the bottom surface of the pressure plate 52, ensuring the continuity of force transmission. Under normal, stable driving conditions and minor vibrations, filler 54 undergoes slight elastic deformation. When the vehicle encounters a large pothole... When the depression causes severe turbulence, the mounting frame 2 sinks vertically downwards, causing the pressure plate 52 to press down on the filler 54. The multi-layer ACF energy-absorbing material undergoes progressive extrusion deformation simultaneously, fully dissipating the ultimate impact kinetic energy and avoiding rigid collision between the mounting frame 2 and the fixed frame 1, thus preventing hard impact damage to the bottom of the power battery. When the impact load disappears, the filler 54 slowly rebounds and resets itself based on its own viscoelastic properties, without secondary vibration caused by rapid rebound. It can maintain stable energy absorption and protection performance continuously, and is not prone to collapse, aging, or failure due to long-term repeated compression, making it suitable for various harsh working conditions.

[0033] In addition, to ensure the symmetry and uniformity of the overall energy absorption protection, two energy absorption components 5 are symmetrically arranged. The two energy absorption components 5 are respectively arranged inside the two sides of the fixed frame 1 along the length direction. The symmetrical layout can balance the impact force at the bottom of the mounting frame 2, avoid the problem of unilateral energy absorption overload and structural wear, and greatly improve the overall protection stability and structural service life under extreme working conditions.

[0034] During use, under normal driving and operation conditions, the mounting frame 2 maintains its normal height, the V-shaped guard plate 41 is normally open, and the bottom heat dissipation slots are open for ventilation, enabling continuous heat dissipation of the power battery. The four-corner damping shock absorbers 3 filter out normal small bumps and vibrations. The sliding groove 11 and the slider 21 cooperate to ensure vertical sliding stability, and the flexible pad 12 buffers slight horizontal swaying. When the vehicle bumps, the mounting frame 2 sinks vertically, and the pressure rod 43 moves down synchronously. Through the figure-eight connecting rod 42, the V-shaped guard plate 41 is driven to swing down and close, sealing the heat dissipation slots to form full bottom protection. At the same time, the large downward displacement causes the pressure plate 52 to squeeze the internal filler 54 of the energy absorption box 53. The impact energy is dissipated through the gradual deformation of the material. After the impact, the damping shock absorber 3 rebounds and resets, the guard plate 41 reopens to restore the heat dissipation state, and the filler 54 slowly rebounds and resets. The entire process realizes the integrated linkage function of adaptive heat dissipation, shock absorption, protection, and energy absorption. The structure linkage is reliable, the working condition adaptability is strong, and it effectively solves the problem that the rigid protective plate of the existing power battery bracket is prone to poor heat dissipation.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A shockproof mounting bracket for a power battery in a new energy vehicle, characterized in that, It includes a fixed frame (1) and a mounting frame (2) for mounting the power battery; The fixed frame (1) is slidably sleeved on the bottom of the outer side of the mounting frame (2). The mounting frame (2) can slide vertically downward relative to the fixed frame (1). Damping shock absorbers (3) are installed between the four corners of the fixed frame (1) and the mounting frame (2). The fixed frame (1) is provided with a protective component (4) at the bottom. The protective component (4) includes multiple pairs of protective plates (41). A heat dissipation groove for battery heat dissipation is formed between adjacent protective plates (41). When the mounting frame (2) sinks, it can drive the protective component (4) to close the heat dissipation groove, forming a closed protective surface at the bottom of the fixed frame (1).

2. The shockproof fixing bracket for power batteries of new energy vehicles according to claim 1, characterized in that, The guard plate (41) is hinged with a connecting rod (42). The two connecting rods (42) on each pair of guard plates (41) are set as a pair. Each pair of connecting rods (42) is hinged with a pressure rod (43) at the end away from the guard plate (41). The pressure rod (43) is connected to the bottom of the mounting frame (2).

3. The shockproof fixing bracket for new energy vehicle power batteries according to claim 2, characterized in that, Under normal conditions, each pair of protective plates (41) has its sides raised in a V-shape, forming a heat dissipation groove between adjacent pairs of protective plates (41). Each pair of connecting rods (42) is arranged in a figure-eight shape. The pressure rod (43) moves down and drives the protective plates (41) to swing downward through the connecting rods (42), so that multiple pairs of protective plates (41) fit together to form a closed protective surface.

4. The shockproof fixing bracket for new energy vehicle power batteries according to claim 1, characterized in that, The fixed frame (1) has multiple sliding grooves (11) on its inner side, and the mounting frame (2) has multiple sliders (21) fixed on its outer side. The multiple sliders (21) and the multiple sliding grooves (11) are in one-to-one sliding fit. The sliding grooves (11) have a reserved movable gap at their fit positions. The sliding grooves (11) are provided with flexible pads (12) for filling the movable gap.

5. The shockproof fixing bracket for new energy vehicle power batteries according to claim 4, characterized in that, The flexible pad (12) is attached to and fixed to the inner wall of the slide groove (11). The exposed side of the flexible pad (12) abuts against the side wall of the slider (21) with a gap. When the slider (21) slides horizontally relative to the slide groove (11), it squeezes the flexible pad (12).

6. The shockproof fixing bracket for new energy vehicle power batteries according to claim 1, characterized in that, An energy-absorbing component (5) is provided between the fixed frame (1) and the mounting frame (2). The energy-absorbing component (5) includes a connecting seat (51), a pressure plate (52), an energy-absorbing box (53), and a filler (54). The connecting seat (51) is installed at the bottom of the mounting frame (2), the pressure plate (52) is installed at the bottom of the connecting seat (51), and the energy-absorbing box (53) is installed at the bottom of the fixed frame (1) and vertically corresponds to the pressure plate (52). The pressure plate (52) is vertically slidably inserted into the energy-absorbing box (53).

7. The shockproof fixing bracket for new energy vehicle power batteries according to claim 6, characterized in that, The energy-absorbing box (53) is filled with filler (54), which is a viscoelastic slow-rebound energy-absorbing material.

8. The shockproof fixing bracket for power batteries of new energy vehicles according to claim 7, characterized in that, The filler (54) is an ACF energy-absorbing material. Multiple layers of ACF energy-absorbing material are filled in the energy-absorbing box (53), and the top abuts against the pressure plate (52).

9. The shockproof fixing bracket for power batteries of new energy vehicles according to claim 6, characterized in that, Two energy-absorbing components (5) are provided, and the two energy-absorbing components (5) are located on the two sides of the fixed frame (1) along its length.

10. The shockproof fixing bracket for power batteries of new energy vehicles according to claim 1, characterized in that, The top of the damping shock absorber (3) is hinged to the top corner of the mounting frame (2), and the bottom of the damping shock absorber (3) is hinged to the bottom corner of the fixed frame (1).

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