CN108807756B - Damping mechanism for new energy automobile power battery protective box - Google Patents
Damping mechanism for new energy automobile power battery protective box Download PDFInfo
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- CN108807756B CN108807756B CN201810589887.0A CN201810589887A CN108807756B CN 108807756 B CN108807756 B CN 108807756B CN 201810589887 A CN201810589887 A CN 201810589887A CN 108807756 B CN108807756 B CN 108807756B
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- fixing column
- sleeve
- new energy
- cylinder
- energy automobile
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Aviation & Aerospace Engineering (AREA)
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- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The damping mechanism for the power battery protection box of the new energy automobile comprises a sleeve and an outer spring sleeved on the sleeve; the top end and the bottom end of the outer spring are fixedly connected with the bottom of the protective box and the top of the base respectively, an upper fixing column and a lower fixing column are symmetrically arranged at the top and the bottom in the sleeve, the upper fixing column and the lower fixing column are respectively in a convex structure, the upper fixing column is fixedly connected with the bottom of the box, the lower fixing column is fixedly connected with the top of the base, extension openings for the upper fixing column and the lower fixing column to penetrate through are formed in the top and the bottom of the sleeve respectively, and the upper fixing column and the lower fixing column extend out through the respective extension openings respectively. This damper can carry out all-round multistage shock attenuation to the box, and stability is better, can avoid the battery because of the emergence of the incident such as damage or firing that the violent collision leads to. This battery protection box has improved the fail safe nature that new energy automobile went greatly to make driving and the person of taking have better use and experience.
Description
Technical Field
The invention relates to the technical field of new energy vehicles, in particular to a damping mechanism for a power battery protection box of a new energy vehicle.
Background
The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile, other new energy automobiles and the like, the existing pure electric automobile generally adopts a lithium battery as an energy storage power source, the battery provides electric energy for the motor, and the motor is driven to run, so that the automobile is pushed to run.
When a pure electric automobile runs on a bumpy road section, the power battery pack jolts along with the automobile in the automobile and is easy to damage. When the automobile is impacted, particularly when the electric automobile is impacted actively or passively, the battery is easy to shift to cause impact damage, and the power battery pack stores a large amount of electric energy, even causes explosion and spontaneous combustion, so that the safety and reliability are poor.
Disclosure of Invention
In view of this, the invention aims to provide a damping mechanism for a new energy automobile power battery protection box, which can greatly improve the running safety and reliability of the new energy automobile, so that driving and passengers have better use experience.
The invention provides a damping mechanism for a new energy automobile power battery protection box, which comprises a sleeve and an outer spring sleeved on the sleeve, wherein a preset distance is arranged between the outer peripheral wall of the sleeve and the inner periphery of the outer spring at intervals to form an annular cavity structure, and the sleeve is made of an elastic material;
the top end and the bottom end of the outer spring are fixedly connected with the bottom of the protective box and the top of the base respectively, an upper fixing column and a lower fixing column are symmetrically arranged at the top and the bottom in the sleeve, the upper fixing column and the lower fixing column are respectively in a convex structure, one end of the upper fixing column provided with a flange is arranged in the sleeve, the other end of the upper fixing column penetrates through the sleeve towards the upper side and is fixedly connected with the bottom of the box, one end of the lower fixing column provided with a flange is arranged in the sleeve, the other end of the lower fixing column penetrates through the sleeve towards the lower side and is fixedly connected with the top of the base, extension openings for the upper fixing column and the lower fixing column to penetrate through are formed in the top and the bottom of the sleeve respectively, and the upper fixing column and the lower fixing column respectively extend through respective extension openings.
Preferably, the top of the lower fixed column is also fixedly connected with an inner spring,
the lower end of the inner spring is fixedly connected to the top of the fixed column, the upper end of the inner spring is a free end, and the inner spring is located below the upper fixed column.
Preferably, the sleeve includes an interior steel cylinder and an outer rubber cylinder, a plurality of pressure suction grooves have been seted up on the periphery wall of interior steel cylinder, and a plurality of pressure suction grooves encircle the periphery wall evenly distributed of interior steel cylinder, and each pressure suction groove extends along the direction that is on a parallel with the axis of this interior steel cylinder's axle respectively.
Preferably, the inner steel cylinder is of a split structure.
Preferably, the inner steel cylinder comprises a cylinder body and a cylinder cover, and the cylinder cover is connected to the upper end head of the cylinder body.
Preferably, the plurality of pressure suction grooves are formed in the outer peripheral wall of the cylinder body, the plurality of pressure suction grooves are uniformly distributed around the outer peripheral wall of the cylinder body, and each pressure suction groove extends along a direction parallel to the axis of the cylinder body;
wherein, the pressure suction groove is of a smooth transition structure with a small upper end and a large lower end.
Preferably, the pressure suction groove is of an isosceles trapezoid structure with an upper bottom edge and a lower bottom edge which are respectively chamfered into round angles.
Preferably, when the box body presses the sleeve down violently, the lower part of the sleeve is expanded under force to form an expanded structure, the expanded structure is pressed on the inner ring of the outer spring, and the expanded structure enables the lower part of the sleeve and the outer spring to form an integrated structure to achieve buffering and shock absorption.
Preferably, openings are respectively formed in the top wall of the outer rubber cylinder and the top wall of the cylinder cover, and the two openings are arranged correspondingly to form the extension opening for the upper fixing column to extend upwards;
openings are respectively formed in the bottom wall of the barrel body and the bottom wall of the outer rubber barrel, the two openings are arranged correspondingly to each other, and the extension opening for the lower fixing column to extend downwards is formed.
Preferably, the stiffness coefficient of the outer spring is greater than the stiffness coefficient of the inner spring.
The damping mechanism provided by the invention can perform omnibearing multi-stage damping on the box body of the power battery protection box of the new energy automobile, and has better stability. When the automobile is impacted, the battery can be protected, and the occurrence of safety accidents such as damage or fire caused by severe collision of the battery is avoided. This battery protection box has improved the fail safe nature that new energy automobile went greatly to make driving and the person of taking have better use and experience.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of a new energy automobile power battery protection box according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a damping mechanism of a power battery protection box of a new energy automobile according to an embodiment of the invention.
Fig. 3 shows a perspective view of a sleeve of a damper mechanism according to an embodiment of the present invention.
Fig. 4 shows an exploded view of a sleeve of a damping mechanism according to an embodiment of the present invention.
FIG. 5 illustrates a top view of a sleeve of a damping mechanism according to an embodiment of the present invention.
FIG. 6 illustrates a cross-sectional view of a sleeve of a shock absorbing mechanism according to an embodiment of the present invention.
Fig. 7 shows a schematic perspective view of an inner steel cylinder of a sleeve according to an embodiment of the present invention.
Fig. 8 shows an exploded view of the inner steel cylinder of the sleeve according to an embodiment of the present invention.
FIG. 9 shows a cross-sectional view of the inner steel cylinder of the sleeve according to an embodiment of the present invention.
Fig. 10-11 show perspective views of the barrel of the inner steel cylinder according to an embodiment of the invention from different perspectives.
Fig. 12-13 show schematic perspective views of a cover of an inner steel cylinder according to an embodiment of the invention from different perspectives.
In the figure: 1-base, 2-damping mechanism, 3-lower fixed column, 4-inner spring, 5-sleeve, 51-inner steel cylinder, 511-cylinder, 5111-pressure groove, 512-cylinder cover, 52-outer rubber cylinder, 6-upper fixed column, 7-outer spring, 8-box body and 14-mounting leg.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
As shown in fig. 1 to 13, the invention provides a damping mechanism for a power battery protection box of a new energy automobile. Wherein, new energy automobile power battery protective housing includes base 1, box 8 and a plurality of damper 2, base 1's top is located to box 8, and box 8 bottom is evenly connected with base 1 through a plurality of damper 2, and a plurality of damper 2 evenly locate between base 1 and the box 8 bottom promptly.
In this embodiment, base 1's bottom both ends are equipped with supporting leg 14, are equipped with rag bolt hole on the supporting leg 14. The protective box of the new energy automobile can be fixed on the frame through foundation bolts. The stiffness coefficient of the outer spring 7 is larger than the stiffness coefficient of the inner spring 4, and the stiffness coefficient of the outer spring 7 is 2-6 times, such as 2.5 times, 3 times or 4 times, the stiffness coefficient of the inner spring 4.
Fig. 3 to 13 show detailed structural diagrams of the sleeve in this embodiment. Referring to fig. 3 to 13, in this embodiment, the sleeve 5 includes an inner steel cylinder 51 and an outer rubber cylinder 52, and the outer rubber cylinder 52 is sleeved outside the inner steel cylinder 51. The outer rubber tube 52 is used for buffering and increasing the friction force when contacting with the inner ring of the outer spring 7, and the outer rubber tube 52 is made of rubber material with certain elasticity, wear resistance and heat resistance. The inner steel cylinder 51 is made of steel having large elasticity and toughness.
In this embodiment, in order to facilitate the assembly of the upper and lower fixing posts 6 and 3 and the inner spring 4, the inner steel cylinder is of a split structure. The inner steel cylinder comprises a cylinder body 511 and a cylinder cover 512, and the cylinder cover 512 is connected to the upper end of the cylinder body 511. The cover 512 and the barrel 511 can be connected through screw threads or through a clamping manner, for example, the cover 512 is clamped on the barrel 511 through the clamping manner and then the cover 512 and the barrel 511 are welded through spot welding. On the periphery wall of interior steel cylinder 51, seted up a plurality of pressure groove 5111 of inhaling specifically on the periphery wall of barrel 511, a plurality of pressure grooves 5111 of inhaling encircle the periphery wall evenly distributed of barrel, each pressure groove of inhaling extends along the direction that is on a parallel with the axis direction of this barrel 511 respectively. Wherein, the pressure suction groove 5111 is a smooth transition structure with a small upper end and a large lower end.
In this embodiment, the suction groove 5111 is an isosceles trapezoid structure with rounded upper and lower bottom edges, i.e., the upper and lower bottom edges of the trapezoid structure are replaced by circular arcs, and two end points of the upper and lower bottom edges are respectively connected to two ends of the two waists in a smooth transition manner. The lower end of the suction groove 5111 extends to the inner bottom surface of the cylinder 511 or to a position close to the inner bottom surface of the cylinder 511; the upper end of the suction groove 5111 extends to the center line of the cylinder 511 in the axial direction or a position above the center line, preferably above the center line. In this embodiment, the extension length of the suction groove 5111 is 1/2 to 3/4, for example, 3/5, which occupies the entire height of the cylinder 511 (the axial direction is the height direction).
When the box body 8 presses the sleeve 5 down violently, the lower part of the sleeve 5 is stressed and expanded to form an expanded structure, the expanded structure is extruded on the inner ring of the outer spring 7, and the expanded structure enables the lower part of the sleeve 5 and the outer spring 7 to form an integrated structure to achieve buffering and shock absorption. The expanding structure is a structure with a large upper end and a small lower end, the structure is similar to a cone, the bottom of the expanding structure and the whole bottom surface structure formed by the outer spring 7 are stably supported on the base 1, and the binding force of the expanding structure and the inner ring of the spring is reduced from bottom to top in sequence, so that the damping mechanism 2 is subjected to severe vibration. For example, when a new energy automobile runs through a large ditch sill suddenly or is subjected to active and passive impact and severe jolt impact, the box body 8 can buffer impact force from the vertical direction in a step structure, and bear and buffer large impact force from the horizontal direction, so that the box body 8 is prevented from swinging violently, and the power battery pack in the box body 8 is prevented from being damaged or even being subjected to safety accidents due to shifting impact.
Openings are respectively formed in the cylinder cover 512 and the top wall of the outer rubber cylinder 52, and the two openings are arranged correspondingly to form an extending opening for the upper fixing column 6 to extend upwards; openings are respectively formed in the bottom wall of the cylinder body 511 and the bottom wall of the outer rubber cylinder 52, and the two openings are arranged correspondingly to each other to form an extension opening for the lower fixing column 3 to extend downwards.
In this embodiment, when the box 8 and the damping mechanism 2 are in a static balance state (assuming that the new energy vehicle is in a horizontal state), a first preset distance is spaced between the lower end surface of the upper fixing column 6 and the upper end surface of the inner spring 4, and a second preset distance is spaced between the upper end surface of the sleeve 5 and the outer bottom surface of the box 8. Wherein the first preset distance is smaller than the second preset distance.
When the box body 8 is impacted in the horizontal direction, the outer spring 7 and the sleeve 5 simultaneously perform buffering and shock absorption; when the box body 8 is impacted vertically downwards, the outer spring 7 firstly performs buffering and shock absorption; when the upper fixing column 6 is in contact with the inner spring 4, the inner spring 4 is involved to perform secondary buffering and shock absorption. After outer spring 7 and inner spring 4 continue to be compressed to a certain degree, base 1 and box 8 offset with sleeve 5 respectively, and sleeve 5 intervenes and carries out cubic buffering shock attenuation to deal with not equidimension impact, the shock attenuation is effectual. For the case of three times of shock absorption by the intervention of the sleeve 5, reference is made to the above-mentioned parts, and the details are not repeated herein. The stiffness coefficient of the inner spring 4 is smaller than that of the outer spring 7, so that the damping effect is ensured under the condition that the spring material is thinner.
The damping mechanism provided by the invention can perform all-dimensional multi-stage damping on the box body, and is better in stability. When the automobile is impacted, the battery can be protected, and the occurrence of safety accidents such as damage or fire caused by severe collision of the battery is avoided. This battery protection box has improved the fail safe nature that new energy automobile went greatly to make driving and the person of taking have better use and experience.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (9)
1. The damping mechanism for the power battery protection box of the new energy automobile is characterized in that the damping mechanism (2) comprises a sleeve (5) and an outer spring (7) sleeved on the sleeve (5), a preset distance is arranged between the outer peripheral wall of the sleeve (5) and the inner periphery of the outer spring (7) at intervals to form an annular cavity structure, and the sleeve (5) is made of elastic materials;
the top end and the bottom end of the outer spring (7) are respectively fixedly connected with the bottom of the box body (8) of the protective box and the top of the base (1), an upper fixing column (6) and a lower fixing column (3) are symmetrically arranged at the top and the bottom in the sleeve (5), the upper fixing column (6) and the lower fixing column (3) are respectively in a convex structure, one end of the upper fixing column (6) provided with a flange is arranged in the sleeve (5), the other end of the upper fixing column is upwards penetrated through the sleeve (5) and is fixedly connected with the bottom of the box body (8), one end of the lower fixing column (3) provided with a flange is arranged in the sleeve (5), the other end of the lower fixing column downwards penetrates through the sleeve (5) and is fixedly connected with the top of the base (1), the top and the bottom of the sleeve (5) are respectively provided with an extending opening for the upper fixing column (6) and the lower fixing column (3) to pass through, the upper fixing column (6) and the lower fixing column (3) respectively extend out through respective extending openings;
sleeve (5) are including interior steel cylinder and outer rubber cylinder, seted up a plurality of pressure-absorbing grooves on the periphery wall of interior steel cylinder, a plurality of pressure-absorbing grooves encircle the periphery wall evenly distributed of interior steel cylinder, and each pressure-absorbing groove extends along the direction that is on a parallel with the axis of this interior steel cylinder respectively.
2. The damping mechanism for the new energy automobile power battery protection box according to claim 1, characterized in that an inner spring (4) is further fixedly connected to the top of the lower fixing column (3),
the lower end of the inner spring (4) is fixedly connected to the top of the lower fixing column (3), the upper end of the inner spring is a free end, and the inner spring (4) is located below the upper fixing column (6).
3. The damping mechanism for the new energy automobile power battery protection box according to claim 1, wherein the inner steel cylinder is of a split structure.
4. The shock absorption mechanism for the new energy automobile power battery protection box according to claim 3, wherein the inner steel cylinder comprises a cylinder body (511) and a cylinder cover (512), and the cylinder cover (512) is connected to the upper end of the cylinder body (511).
5. The shock absorption mechanism for the new energy automobile power battery protection box according to claim 4, characterized in that a plurality of the suction grooves (5111) are formed in the outer peripheral wall of the cylinder (511), the plurality of the suction grooves (5111) are uniformly distributed around the outer peripheral wall of the cylinder (511), and each suction groove (5111) extends along a direction parallel to the axis of the cylinder (511);
wherein, the pressure suction groove (5111) is a smooth transition structure with a small upper end and a large lower end.
6. The shock absorption mechanism for the new energy automobile power battery protection box according to any one of claims 3 to 5, wherein the pressure absorption groove (5111) is of an isosceles trapezoid structure with an upper bottom edge and a lower bottom edge which are respectively rounded.
7. The damping mechanism for the new energy automobile power battery protection box according to claim 1, characterized in that when the box body (8) presses down the sleeve (5) violently, the lower portion of the sleeve (5) is stressed to expand to form an expanded structure, the expanded structure is extruded on the inner ring of the outer spring (7), and the expanded structure enables the lower portion of the sleeve (5) and the outer spring (7) to form an integrated structure to achieve buffering and damping.
8. The damping mechanism for the new energy automobile power battery protection box according to claim 4 or 5, characterized in that openings are respectively formed on the cylinder cover (512) and the top wall of the outer rubber cylinder (52), and the two openings are arranged corresponding to each other to form the extending opening through which the upper fixing column (6) extends upwards;
openings are respectively formed in the bottom wall of the barrel body (511) and the bottom wall of the outer rubber barrel (52), the two openings are arranged correspondingly to each other, and the extension opening for the lower fixing column (3) to extend downwards is formed.
9. The damping mechanism for the new energy automobile power battery protection box according to claim 1, characterized in that the stiffness coefficient of the outer spring (7) is larger than the stiffness coefficient of the inner spring (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810589887.0A CN108807756B (en) | 2018-06-08 | 2018-06-08 | Damping mechanism for new energy automobile power battery protective box |
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| CN201810589887.0A CN108807756B (en) | 2018-06-08 | 2018-06-08 | Damping mechanism for new energy automobile power battery protective box |
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| CN108807756B true CN108807756B (en) | 2021-08-24 |
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Families Citing this family (4)
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| CN111424538A (en) * | 2020-04-23 | 2020-07-17 | 南昌大学 | Self-resetting buffering energy-consumption type bridge damping support |
| CN111474050A (en) * | 2020-06-05 | 2020-07-31 | 河海大学 | Anti-seismic device for testing compressive strength of concrete |
| CN112032247A (en) * | 2020-09-05 | 2020-12-04 | 李明娟 | New energy automobile damping device convenient to installation |
| CN118129000B (en) * | 2024-05-07 | 2024-07-19 | 大庆恒驰电气有限公司 | Supporting and hanging bracket device for electromechanical installation of building |
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Effective date of registration: 20210804 Address after: 036000 north side of Zhenwu East Street, west side of Daxin 2nd Road, Shuozhou Development Zone, Shanxi Province Applicant after: Shanxi nuohao New Energy Technology Co.,Ltd. Address before: 450000 Jinying North Wen Ya 2, 56, Jinshui Road, Jinshui District, Zhengzhou, Henan 1405 Applicant before: Zhang Zhijun |
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