CN114516262B - Vehicle bottom battery protection system and vehicle using same - Google Patents
Vehicle bottom battery protection system and vehicle using same Download PDFInfo
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- CN114516262B CN114516262B CN202011281583.1A CN202011281583A CN114516262B CN 114516262 B CN114516262 B CN 114516262B CN 202011281583 A CN202011281583 A CN 202011281583A CN 114516262 B CN114516262 B CN 114516262B
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- 230000001681 protective effect Effects 0.000 claims abstract description 75
- 238000009434 installation Methods 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims description 23
- 238000001125 extrusion Methods 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 16
- 230000001012 protector Effects 0.000 description 14
- 238000003825 pressing Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000007123 defense Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0007—Measures or means for preventing or attenuating collisions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a vehicle bottom battery protection system and a vehicle using the same, wherein the vehicle bottom battery protection system comprises: the frame is provided with an installation space for installing the battery pack; the protective guide rail is fixed at the bottom of the frame and is used for crushing the obstacle; the protective guide rail is provided with one guide section which is positioned at the front side of the installation space and gradually and backwardly transitions from inside to outside; or, the two protective guide rails are respectively positioned at the front side and the rear side of the installation space, the protective guide rail at the front side comprises a guide section which gradually and backwards transits from inside to outside, and the protective guide rail at the rear side comprises a guide section which gradually and forwards transits from inside to outside. For the obstacle with larger hardness and larger volume, the obstacle can move to the outer side of the frame under the guidance of the reaction force and the guide section of the protective guide rail without being pressed from the upper side of the obstacle, so that the bump of the vehicle can be avoided, the protective guide rail can be prevented from generating larger deformation and abrasion, the service life of the protective guide rail is prolonged, and frequent replacement is avoided.
Description
Technical Field
The utility model relates to the technical field of vehicle bottom battery protection, in particular to a vehicle bottom battery protection system and a vehicle using the same.
Background
At present, batteries of pure electric buses are arranged on a middle frame, the ground clearance is low, when the buses run, objects such as higher deceleration convex hulls, road surface scattering barriers, road surface protruding barriers and the like are encountered, the bottom of each battery is scratched or bumped, and when the batteries are severely bumped, the risks of thermal runaway ignition caused by internal short circuit of the batteries exist.
In this regard, the chinese patent publication No. CN207173275U discloses a power battery bottom guard and an automobile, wherein the guard is in fact a guard plate assembly comprising a first guard plate, a second guard plate and a third guard plate, wherein the first guard plate is fixedly connected to the bottom of the automobile body; the second guard plate is corrugated, and the upper end surface of the second guard plate is fixedly connected with the first guard plate; the third guard plate is provided with a groove, the second guard plate is fixedly arranged in the groove, and the end surfaces of the two side walls of the groove are fixedly connected with the first guard plate; the two side walls form an obtuse angle with the bottom of the groove. When the device is used, when obstacles such as soil blocks with lower intensity are encountered, the obstacles can be effectively crushed, and when the obstacles with higher intensity are encountered to collide, the side wall of the groove can decompose the collision force into lateral component force, so that the whole vehicle is lifted up to a certain height, the obstacles can be effectively spanned, and the impact of the obstacles on the bottom of the battery pack is prevented.
The protective device is directly pressed against the obstacle with higher strength, and when the obstacle with larger size and high strength is pressed against the obstacle, the protective device can not only bump a vehicle, but also generate larger reaction force on the protective device, so that the protective device is seriously deformed and worn, the service life is shorter, and the protective device needs to be replaced frequently. For high-strength barriers with small volumes, the protective device cannot be pressed at all, and the barrier can cross the protective device and then is likely to be in direct contact with a rear battery pack, so that the battery pack is damaged. In addition, because the battery package bottom is open, when the car runs into higher speed reduction convex closure or runs into harder protrusion or splash in car bottom, battery package bottom can directly contact with speed reduction convex closure, protrusion or splash, causes the local concentrated atress of battery package and appears damaging the destruction.
Disclosure of Invention
The utility model aims to provide a vehicle bottom battery protection system, which is used for solving the problems that a protection device in the prior art can only press from an obstacle to cause jolt of a vehicle, and the protection device is easy to deform and wear and needs to be replaced frequently; the utility model also aims to provide a vehicle so as to solve the problems that the protective device in the prior art can only press from an obstacle to cause jolt of the vehicle, and the protective device is easy to deform and wear and needs to be replaced frequently.
In order to achieve the above object, the vehicle bottom battery protection system of the present utility model adopts the following technical scheme:
a vehicle underbody battery protection system comprising:
the frame is provided with an installation space for installing a battery pack, and the head part of the frame is defined in front of the tail part;
the protective guide rail is fixed at the bottom of the frame and is used for crushing the obstacle;
the protective guide rail is provided with one guide section and is positioned at the front side of the installation space, and the protective guide rail comprises a guide section which gradually and backwards transits from inside to outside so as to guide the obstacle to the outer side of the frame; or,
the protection guide rail has two and is located respectively the front and back both sides of installation space, and the protection guide rail of front side includes from inside to outside gradually the back transition in order to guide the guide section outside the frame with the barrier, and the protection guide rail of rear side includes from inside to outside gradually the forward transition in order to guide the guide section outside the frame with the barrier.
The beneficial effects of the technical scheme are that: when one protective guide rail is arranged, the protective guide rail is fixed at the bottom of the frame and positioned at the front side of the installation space, namely, the protective guide rail is arranged at the front side of the battery pack, so that when the vehicle runs forwards, the protective guide rail can firstly contact with the front obstacle, and therefore, for the obstacles with low hardness (such as soil blocks, relatively brittle sand and the like), the protective guide rail can directly crush the obstacles, and as the protective guide rail comprises a guide section which gradually and backwards transits from inside to outside, part of the crushed obstacles can move to the outer side of the frame under the guide action of the guide section; and for the obstacle with larger hardness and larger volume (such as larger hard stone, broken masonry and the like), the obstacle can strike the protective guide rail, and can move to the outer side of the frame under the reaction force of the protective guide rail and the guiding action of the guiding section without being pressed from the upper side of the obstacle, so that the bump of a vehicle can be avoided, and the protective guide rail can be prevented from being deformed and worn greatly, so that the service life of the protective guide rail can be prolonged, and frequent replacement is avoided.
When the number of the protective guide rails is two, the two protective guide rails are respectively positioned on the front side and the rear side of the installation space, namely are respectively arranged on the front side and the rear side of the battery pack, so that the effect can be achieved under the action of the guide section no matter the vehicle runs forwards or backs.
Further, in order to make things convenient for the protection guide rail to roll the barrier, guarantee the overall structure intensity of protection guide rail, make things convenient for the fixed of protection guide rail and frame, the protection guide rail is the arc that arc and arc opening set up including the cross-section, protection guide rail is still including fixing at the arc top in order to with arc opening confined shrouding, shrouding and frame fixed connection, the arc surface of arc constitutes the rolling surface that is used for grinding the barrier.
Further, in order to facilitate the fixed connection between the protective guide rail and the frame, the front end and the rear end of the sealing plate are provided with more arc plates to respectively form a front extension part and a rear extension part.
Further, in order to ensure the effect of the protective guide rail guiding the obstacle, the protective guide rail is wholly arc-shaped, and the guiding section is an arc-shaped guiding section.
Further, in order to enhance the protection effect on the battery pack, it is convenient to crush or reduce the kinetic energy of the obstacle which is smaller in size and passes over the protection guide rail, and the vehicle bottom battery protection system further comprises a pressing plate fixed at the bottom of the vehicle frame, wherein the pressing plate is positioned between the installation space and the protection guide rail and is provided with a pressing surface for pressing and crushing the obstacle, and the bottommost end of the pressing plate is lower than the bottommost end of the protection guide rail.
Further, in order to simplify the structure and facilitate the manufacture, the whole extruding plate is a straight extruding plate, the section of the extruding plate is a semicircular arc with an upward opening, and the circular arc surface of the extruding plate forms the extruding surface.
Further, in order to strengthen the guard action to the battery package, prevent that the battery package from suffering damage with higher speed reduction convex closure, harder protrusion or splash direct contact, vehicle bottom battery protection system still includes the combination protector of fixing in the frame bottom, on the frame in the mounting space internal fixation has the mounting panel that is used for installing the battery package, combination protector is located under the mounting panel, and combination protector includes the guard plate and installs the gyro wheel on the guard plate, and the axis of rotation of gyro wheel extends along controlling the direction, and the gyro wheel is used for rolling contact with higher barrier to upwards lift certain height with whole car.
Further, in order to simplify the structure, make things convenient for the installation of gyro wheel, combination protector still includes first fixed block and the second fixed block of fixing on the guard plate, is provided with the roller shaft between first fixed block and the second fixed block, the outside at the roller shaft is established to the gyro wheel cover.
Further, in order to strengthen the guard action to the battery package, prevent that the battery package from suffering damage with higher speed reduction convex closure, harder protrusion or splash direct contact, vehicle bottom battery protection system still includes the combination protector of fixing in the frame bottom, on the frame in the mounting space internal fixation has the mounting panel that is used for installing the battery package, combination protector is located under the mounting panel, and combination protector includes the guard plate and installs the gyro wheel on the guard plate, and the axis of rotation of gyro wheel extends along controlling the direction, and the gyro wheel is used for rolling contact with higher barrier to upwards lift certain height with whole car.
In order to achieve the above object, the vehicle of the present utility model adopts the following technical scheme:
a vehicle comprising a battery pack and a vehicle underbody battery protection system, the vehicle underbody battery protection system comprising:
the frame is provided with an installation space for installing a battery pack, and the head part of the frame is defined in front of the tail part;
the protective guide rail is fixed at the bottom of the frame and is used for crushing the obstacle;
the protective guide rail is provided with one guide section and is positioned at the front side of the installation space, and the protective guide rail comprises a guide section which gradually and backwards transits from inside to outside so as to guide the obstacle to the outer side of the frame; or,
the protection guide rail has two and is located respectively the front and back both sides of installation space, and the protection guide rail of front side includes from inside to outside gradually the back transition in order to guide the guide section outside the frame with the barrier, and the protection guide rail of rear side includes from inside to outside gradually the forward transition in order to guide the guide section outside the frame with the barrier.
The beneficial effects of the technical scheme are that: when one protective guide rail is arranged, the protective guide rail is fixed at the bottom of the frame and positioned at the front side of the installation space, namely, the protective guide rail is arranged at the front side of the battery pack, so that when the vehicle runs forwards, the protective guide rail can firstly contact with the front obstacle, and therefore, for the obstacles with low hardness (such as soil blocks, relatively brittle sand and the like), the protective guide rail can directly crush the obstacles, and as the protective guide rail comprises a guide section which gradually and backwards transits from inside to outside, part of the crushed obstacles can move to the outer side of the frame under the guide action of the guide section; and for the obstacle with larger hardness and larger volume (such as larger hard stone, broken masonry and the like), the obstacle can strike the protective guide rail, and can move to the outer side of the frame under the reaction force of the protective guide rail and the guiding action of the guiding section without being pressed from the upper side of the obstacle, so that the bump of a vehicle can be avoided, and the protective guide rail can be prevented from being deformed and worn greatly, so that the service life of the protective guide rail can be prolonged, and frequent replacement is avoided.
When the number of the protective guide rails is two, the two protective guide rails are respectively positioned on the front side and the rear side of the installation space, namely are respectively arranged on the front side and the rear side of the battery pack, so that the effect can be achieved under the action of the guide section no matter the vehicle runs forwards or backs.
Further, in order to make things convenient for the protection guide rail to roll the barrier, guarantee the overall structure intensity of protection guide rail, make things convenient for the fixed of protection guide rail and frame, the protection guide rail is the arc that arc and arc opening set up including the cross-section, protection guide rail is still including fixing at the arc top in order to with arc opening confined shrouding, shrouding and frame fixed connection, the arc surface of arc constitutes the rolling surface that is used for grinding the barrier.
Further, in order to facilitate the fixed connection between the protective guide rail and the frame, the front end and the rear end of the sealing plate are provided with more arc plates to respectively form a front extension part and a rear extension part.
Further, in order to ensure the effect of the protective guide rail guiding the obstacle, the protective guide rail is wholly arc-shaped, and the guiding section is an arc-shaped guiding section.
Further, in order to enhance the protection effect on the battery pack, it is convenient to crush or reduce the kinetic energy of the obstacle which is smaller in size and passes over the protection guide rail, and the vehicle bottom battery protection system further comprises a pressing plate fixed at the bottom of the vehicle frame, wherein the pressing plate is positioned between the installation space and the protection guide rail and is provided with a pressing surface for pressing and crushing the obstacle, and the bottommost end of the pressing plate is lower than the bottommost end of the protection guide rail.
Further, in order to simplify the structure and facilitate the manufacture, the whole extruding plate is a straight extruding plate, the section of the extruding plate is a semicircular arc with an upward opening, and the circular arc surface of the extruding plate forms the extruding surface.
Further, in order to strengthen the guard action to the battery package, prevent that the battery package from suffering damage with higher speed reduction convex closure, harder protrusion or splash direct contact, vehicle bottom battery protection system still includes the combination protector of fixing in the frame bottom, on the frame in the mounting space internal fixation has the mounting panel that is used for installing the battery package, combination protector is located under the mounting panel, and combination protector includes the guard plate and installs the gyro wheel on the guard plate, and the axis of rotation of gyro wheel extends along controlling the direction, and the gyro wheel is used for rolling contact with higher barrier to upwards lift certain height with whole car.
Further, in order to simplify the structure, make things convenient for the installation of gyro wheel, combination protector still includes first fixed block and the second fixed block of fixing on the guard plate, is provided with the roller shaft between first fixed block and the second fixed block, the outside at the roller shaft is established to the gyro wheel cover.
Further, in order to strengthen the guard action to the battery package, prevent that the battery package from suffering damage with higher speed reduction convex closure, harder protrusion or splash direct contact, vehicle bottom battery protection system still includes the combination protector of fixing in the frame bottom, on the frame in the mounting space internal fixation has the mounting panel that is used for installing the battery package, combination protector is located under the mounting panel, and combination protector includes the guard plate and installs the gyro wheel on the guard plate, and the axis of rotation of gyro wheel extends along controlling the direction, and the gyro wheel is used for rolling contact with higher barrier to upwards lift certain height with whole car.
Drawings
FIG. 1 is a bottom view of a vehicle according to the present utility model;
FIG. 2 is a partial block diagram of FIG. 1;
fig. 3 is a perspective view of the guard rail of fig. 1 and 2;
fig. 4 is a longitudinal section of the guard rail of fig. 1 and 2;
fig. 5 is a perspective view of the compression plate of fig. 1 and 2;
FIG. 6 is a side view of the stripper plate of FIGS. 1 and 2;
fig. 7 is a perspective view of the combination guard of fig. 1 and 2;
figure 8 is a side view of the combination guard of figures 1 and 2;
FIG. 9 is an enlarged view of the roller structure of FIGS. 7 and 8;
FIG. 10 is an exploded view of the roller structure of FIG. 9;
fig. 11 is a perspective view of the battery mounting plate of fig. 1 and 2.
In the figure: 1-a protective guide rail; 11-arc-shaped plate; 12-sealing plates; 2-extrusion plates; 21-end face; 3-a combined guard; 31-roller structure; 311-a first fixed block; 312-a second fixed block; 3121-grooves; 313-roller; 3131-perforating; 314-roller shaft; 32-protecting plates; 4-mounting plates; 41-fixing holes; 5-battery pack; and 6, a frame.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
It is noted that relational terms such as "first" and "second", and the like, are 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The features and capabilities of the present utility model are described in further detail below in connection with the examples.
One embodiment of the vehicle of the present utility model is: as shown in fig. 1 and 2, the vehicle includes a battery pack 5 and a vehicle bottom battery protection system including a frame 6, a protection rail 1, a pressing plate 2, and a combination protection device 3.
Defining that the head of frame 6 is in the place ahead of afterbody, the middle part of frame 6 is provided with the installation space that is used for installing battery package 5, specifically, is fixed with the mounting panel 4 that is used for installing the battery package in above-mentioned installation space on the frame 6, combines the fig. 11 to show, is provided with six total mounting holes 41 of three rows on the mounting panel 4, and mounting panel 4 passes through the bolt fastening on three channel-section steel of frame 6, and mounting panel 4 is located the top of three channel-section steel.
The guard rail 1 is fixed to the bottom of the frame 6 for crushing obstacles. The two guard rails 1 in this embodiment are respectively located at the front and rear sides of the installation space, that is, are respectively disposed at the front and rear sides of the battery pack 5, the front and rear guard rails 1 are identical in structure and are symmetrically disposed in front and rear, the guard rails 1 are integrally arc-shaped, and arc-shaped openings formed by the two guard rails 1 are oppositely disposed, as shown in fig. 1.
The front-side guard rail 1 has its forefront end located on the vehicle middle symmetry plane, and its left and right sides symmetrical with respect to the forefront end, and each of them forms a guide section gradually transitioning from inside to outside, and the guide section can guide an obstacle to the outside of the vehicle frame. The rear guard rail 1 has its rearmost end located on the vehicle middle symmetry plane and its left and right sides symmetrical with respect to the rearmost end, and forms guide sections gradually transitioning from inside to outside, respectively, and the guide sections can guide obstacles to the outside of the vehicle frame as well. Since the whole protective guide rail 1 is arc-shaped, the guide sections are arc-shaped guide sections.
As shown in fig. 3 and 4, the protection guide rail 1 includes an arc plate 11 having an arc-shaped cross section and an arc-shaped opening arranged upward, the protection guide rail further includes a sealing plate 12 fixed on the top of the arc plate 11 to seal the arc-shaped opening, and the arc surface of the arc plate 11 forms a rolling surface for grinding obstacles. The front end and the rear end of the sealing plate 12 are provided with a plurality of arc plates 11 to respectively form a front extension part and a rear extension part, and the front extension part and the rear extension part are respectively welded and fixed with the frame 6 to realize that the protective guide rail 1 is fixed on the frame 6.
By arranging the front protective guide rail 1 and the rear protective guide rail 1, a vehicle can be enabled to be in contact with an obstacle no matter forwards or backwards, the protective guide rail 1 is made of light aluminum alloy, the protective guide rail 1 can crush obstacles with low hardness (such as soil blocks, brittle sand stones and the like) directly, and part of crushed obstacles can move to the outer side of a vehicle frame under the guiding action of the guiding section; and for the obstacle with larger hardness and larger volume (such as larger hard stone, broken masonry and the like), the obstacle can strike the protective guide rail, and can move to the outer side of the frame under the reaction force of the protective guide rail and the guiding action of the guiding section without being pressed from the upper side of the obstacle, so that the bump of a vehicle can be avoided, and the protective guide rail can be prevented from being deformed and worn greatly, so that the service life of the protective guide rail can be prolonged, and frequent replacement is avoided.
As shown in fig. 1 and 2, the extrusion plates 2 are fixed at the bottom of the frame 6, and two extrusion plates 2 are respectively located between the installation space and the protection guide rail 1, that is, between the battery pack 5 and the protection guide rail 1. As shown in fig. 5 and 6, the extrusion plate 2 is a straight extrusion plate as a whole, the cross section of the extrusion plate 2 is a semicircular arc with an upward opening, the arc surface of the extrusion plate 2 forms an extrusion surface for extruding and crushing obstacles, and two end surfaces 21 of the extrusion plate 2 are welded and fixed with the frame 6.
The stripper plate 2 is made of high-strength steel, the bottommost end of the stripper plate 2 is lower than the bottommost end of the protective guide rail 1, the protective guide rail 1 can rebound and guide the obstacle with larger hardness and larger volume to the outside of the vehicle frame, the obstacle with smaller volume can cross the protective guide rail 1 (because the protective guide rail 1 cannot touch at all), the obstacle can strike the stripper plate 2, the stripper plate 2 extrudes and pulverizes the obstacle to form the obstacle with smaller volume, or the kinetic energy of the obstacle can be reduced because of extrusion and pulverizes or blocks of the stripper plate 2, so that even if the obstacle collides with a battery pack, the damage to the battery pack can be greatly reduced.
As shown in fig. 2, the combination guard 3 is fixed to the bottom of the frame 6 and directly below the mounting plate 4. Referring to fig. 7, the combined protection device 3 includes a protection plate 32 and a roller structure 31 mounted on the protection plate 32, and referring to fig. 8, 9 and 10, the roller structure 31 includes a first fixing block 311, a second fixing block 312, a roller 313 and a roller shaft 314, the end surfaces of the first fixing block 311 and the second fixing block 312 are welded and fixed on the protection plate 32, one end of the roller shaft 314 is welded and fixed on the first fixing block 311, the other end is inserted and mounted in a groove 3121 provided on the second fixing block 312, the roller 313 is sleeved outside the roller shaft 314, and a through hole 3131 is provided on the roller 313.
There are two roller structures 31 on one cleat 32, and two roller structures 31 are arranged front to back. The rotation axis of the roller 313 extends along the left-right direction, when the vehicle encounters a bottom supporting working condition (such as a higher deceleration convex hull), the roller 313 is in rolling contact with the deceleration convex hull before the battery pack, and at the moment, the roller 313 is lifted upwards by a certain height by the acting force of the deceleration convex hull, so that the battery pack is prevented from being contacted with a higher obstacle. By adopting the roller way, the friction force can be reduced, and the service life of the combined protection device 3 can be prolonged.
The guard plates 32 are welded and fixed on the frame 6, in particular to three channel steels for fixing the mounting plate 4, the mounting plate 4 and the guard plates 32 are clamped on the upper side and the lower side of the channel steels, and the distance between the mounting plate and the guard plates is just equal to the height of the channel steels, and the practical application is 30-40mm.
The guard plate 32 adopts high strength steel to make, can cover the bottom surface of whole battery package 5, and when the vehicle runs into the bottom puncture (like harder protrusion, splash), high strength guard plate 32 can with puncture thing direct contact, blocks bottom puncture object and battery package collision, avoids the condition that the battery package appears concentrating the atress. And the distance between the protection plate 32 and the mounting plate 4 is 30-40mm, so that the bottom of the battery pack can be prevented from being collided by a clearance allowance of 30-40mm even if the protection plate 32 is deformed due to the fact that the protection plate 32 is punctured and extruded by sharp objects.
In summary, when the vehicle bottom battery protection system works, the protection guide rail 1 is firstly contacted with the road surface obstacle, so that the obstacle with low hardness is directly crushed, the obstacle with high hardness and large volume is directly rebounded and guided to the outside of the vehicle under the action of the guide section, and the direct pressing is avoided. The obstacle with larger hardness and smaller volume can cross the protective guide 1 to strike the extrusion plate 2, and the extrusion plate 2 is used for extrusion and crushing or the kinetic energy of the obstacle is reduced. For some obstacles that still reach the bottom of the battery pack, either hard protrusions on the ground or suddenly appearing splashes, the shielding is blocked by shielding plate 32. For higher barriers on the ground, such as a deceleration convex hull, the roller can be in rolling contact with the barrier, so that the whole vehicle is lifted upwards to a certain height, and the barrier is prevented from being in contact with the bottom of the battery pack.
The vehicle disclosed by the utility model can be a pure electric bus, a hybrid electric bus or a common electric car, and the bottom battery protection system of the vehicle is formed by the protection guide rail 1, the extrusion plate 2 and the combined protection device 3 to form three defense lines, so that a powerful protection effect can be formed on a battery pack, the battery pack is prevented from being scratched or bumped, and further, the condition that the battery is out of control and fires caused by internal short circuit of the battery is avoided.
In other embodiments of the vehicle, the vehicle underbody battery protection system may be provided with only two lines of defense, consisting of a guard rail and a combined guard.
In other embodiments of the vehicle, when the thickness of the shield plate is sufficient, a groove may be provided directly on the shield plate, and a roller shaft may be installed in the groove such that the roller is sleeved outside the roller shaft.
In other embodiments of the vehicle, existing wheel products may be used as the wheels, such as the wheels of the bottom of a shopping cart, etc.
In other embodiments of the vehicle, the vehicle underbody battery protection system may be provided with only two lines of protection, consisting of a protection rail and a squeeze plate.
In other embodiments of the vehicle, the cross-sectional shape of the extrusion plate may be the same as the cross-sectional shape of the guard rail, and the extrusion plate is also composed of an arc-shaped plate and a sealing plate.
In other embodiments of the vehicle, the entire compression plate may also be curved.
In other embodiments of the vehicle, the vehicle underbody battery protection system may be provided with only one line of defense, consisting of only the guard rail.
In other embodiments of the vehicle, the protective rail is not curved as a whole, but is splayed, consisting of two inclined sections, which each constitute a guide section.
In other embodiments of the vehicle, the front-to-back width of the closure plate may be just equal to the opening width of the arcuate plate without more arcuate plates, where no forward and rearward extensions are present.
In other embodiments of the vehicle, the cross section of the protective guide may also be semi-circular with an opening facing upwards, where the protective guide is directly fixed to the frame by means of an end surface.
In other embodiments of the vehicle, the vehicle underbody battery protection system may include only one protection rail and the protection rail is disposed at the front side of the battery pack, and as such, the protection rail includes a guide section that gradually transitions from inside to outside to guide the obstacle to the outside of the vehicle frame.
The embodiment of the vehicle bottom battery protection system in the utility model is as follows: the specific structure of the vehicle under-battery protection system is the same as that of the vehicle under-battery protection system in the above-described vehicle embodiment, and will not be repeated here.
The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. A vehicle underbody battery protection system, comprising:
the frame is provided with an installation space for installing a battery pack, and the head part of the frame is defined in front of the tail part;
the protective guide rail is fixed at the bottom of the frame and is used for crushing the obstacle;
the protective guide rail is provided with one guide section and is positioned at the front side of the installation space, and the protective guide rail comprises a guide section which gradually and backwards transits from inside to outside so as to guide the obstacle to the outer side of the frame; or,
the protection guide rail has two and is located respectively the front and back both sides of installation space, the protection guide rail of front side is including the guide section in order to guide the barrier outside the frame by inside-out gradually backward transition, the protection guide rail of rear side is including the guide section in order to guide the barrier outside the frame by inside-out gradually forward transition, the protection guide rail is including the arc that the cross-section is arc and arc opening set up, protection guide rail is still including fixing at the arc top in order to with arc opening confined shrouding, shrouding and frame fixed connection, the arc surface of arc constitutes the rolling surface that is used for grinding the barrier, vehicle bottom battery protection system is still including fixing the stripper plate in the frame bottom, the stripper plate is located between installation space and the protection guide rail, the stripper plate has the extrusion face that is used for the extrusion to grind the barrier, the bottommost end of stripper plate is less than the protection guide rail, the stripper plate is straight, the cross-section of stripper plate is the semicircle arc that the opening set up, the arc surface of stripper plate constitutes the extrusion face.
2. The vehicle underbody battery protection system of claim 1, in which the front and rear ends of the cover plate are formed with arcuate plates forming a forward extension and a rearward extension, respectively.
3. The vehicle underbody battery protection system according to claim 1 or 2, wherein the protection rail is curved as a whole, and the guide section is a curved guide section.
4. The vehicle bottom battery protection system of claim 1, further comprising a combination protection device fixed at the bottom of the frame, a mounting plate for mounting the battery pack is fixed in the mounting space on the frame, the combination protection device is located under the mounting plate, the combination protection device comprises a protection plate and a roller mounted on the protection plate, the rotation axis of the roller extends along the left-right direction, and the roller is used for rolling contact with a higher obstacle to lift the whole vehicle up to a certain height.
5. The vehicle underbody battery protection system of claim 4, in which the combined protection device further comprises a first fixed block and a second fixed block fixed to the protection plate, a roller shaft is disposed between the first fixed block and the second fixed block, and the roller is sleeved outside the roller shaft.
6. The vehicle bottom battery protection system according to claim 1 or 2, further comprising a combination protection device fixed at the bottom of the frame, a mounting plate for mounting the battery pack is fixed in the mounting space on the frame, the combination protection device is located right below the mounting plate, the combination protection device comprises a protection plate and a roller mounted on the protection plate, the rotation axis of the roller extends in the left-right direction, and the roller is used for rolling contact with a higher obstacle to lift the whole vehicle up to a certain height.
7. A vehicle comprising a battery pack and the vehicle underbody battery protection system of any one of claims 1-6.
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| CN202011281583.1A CN114516262B (en) | 2020-11-16 | 2020-11-16 | Vehicle bottom battery protection system and vehicle using same |
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| CN202011281583.1A CN114516262B (en) | 2020-11-16 | 2020-11-16 | Vehicle bottom battery protection system and vehicle using same |
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| CN114516262A CN114516262A (en) | 2022-05-20 |
| CN114516262B true CN114516262B (en) | 2023-08-01 |
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Address after: No. 6, Yutong Road, Guancheng Hui District, Zhengzhou, Henan 450061 Applicant after: Yutong Bus Co.,Ltd. Address before: No.1, Shibali Heyu Road, Guancheng Hui District, Zhengzhou City, Henan Province Applicant before: ZHENGZHOU YUTONG BUS Co.,Ltd. |
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