CN114516262A - 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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- CN114516262A CN114516262A CN202011281583.1A CN202011281583A CN114516262A CN 114516262 A CN114516262 A CN 114516262A CN 202011281583 A CN202011281583 A CN 202011281583A CN 114516262 A CN114516262 A CN 114516262A
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- 230000001681 protective effect Effects 0.000 claims abstract description 59
- 238000009434 installation Methods 0.000 claims abstract description 27
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 24
- 230000000694 effects Effects 0.000 description 13
- 230000009471 action Effects 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000007123 defense Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
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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
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- 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 invention 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 a battery pack; the protective guide rail is fixed at the bottom of the frame and used for crushing the obstacles; the protective guide rail is provided with one guide section which is positioned at the front side of the installation space and comprises a guide section which gradually transits backwards from inside to outside; or, the protection guide rail has two and is located installation space's front and back both sides respectively, and the protection guide rail of front side includes the guide section of gradual backward transition from inside to outside, and the protection guide rail of rear side includes the guide section of gradual forward transition 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 guide of the reaction force and the guide section of the protection guide rail without being pressed from the upper surface of the obstacle, so that the vehicle bump can be avoided, the protection guide rail can be prevented from generating larger deformation and abrasion, the service life of the protection guide rail is prolonged, and frequent replacement is avoided.
Description
Technical Field
The invention 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 a pure electric bus are arranged on a middle frame, the ground clearance position is low, when the bus runs into objects such as a high speed-reducing convex hull, a road surface scattering barrier and a road surface protruding barrier, the bottom of the battery is scratched or collided, and when the batteries are seriously collided, the risk of thermal runaway fire caused by internal short circuit of the batteries exists.
In contrast, the chinese utility model patent with the publication number CN207173275U discloses a protection device for the bottom of a power battery pack and an automobile, wherein the protection device is actually a protection plate assembly, and comprises a first protection plate, a second protection plate and a third protection plate, wherein the first protection plate is fixedly connected with 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; a groove is formed in the third guard plate, the second guard plate is fixedly arranged in the groove, and the end surfaces of 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 battery pack is used, when the battery pack meets obstacles such as soil blocks with low strength, the obstacles can be effectively crushed, and when the battery pack is impacted when the battery pack meets the obstacles with high strength, the side wall of the groove can decompose the impact force into lateral component force, so that the whole vehicle is lifted upwards by a certain height, the obstacles are effectively crossed, and the impact of the obstacles on the bottom of the battery pack is prevented.
The protective device is used for directly pressing a high-strength barrier, and for a high-strength barrier with a large size, the protective device not only causes vehicle jolt when being pressed, but also generates large reaction force on the protective device, so that the protective device is seriously deformed and abraded, the service life is short, and the protective device needs to be frequently replaced. For the high-strength obstacle with small volume, the protective device can not be pressed at all, the obstacle can cross the protective device and then is likely to be in direct contact with the battery pack at the rear, and damage is caused to the battery pack. In addition, because the bottom of the battery pack is open, when the automobile meets a higher deceleration convex hull or meets harder protrusions or splashes at the bottom of the automobile, the bottom of the battery pack can be directly contacted with the deceleration convex hull, the protrusions or the splashes, and the battery pack is locally stressed intensively to be damaged.
Disclosure of Invention
The invention aims to provide a vehicle bottom battery protection system, which aims to solve the problems that in the prior art, a protection device can only be pressed over an obstacle, so that a vehicle jolts, and the protection device is easy to deform and wear and needs to be replaced frequently; the invention also aims to provide a vehicle to solve the problems that the prior protective device can only be pressed over an obstacle, so that the vehicle bumps, and the protective device is easy to deform and wear and needs to be replaced frequently.
In order to achieve the purpose, the vehicle bottom battery protection system adopts the following technical scheme:
a vehicle bottom battery protection system comprising:
the battery pack mounting device comprises a frame, wherein a mounting space for mounting a battery pack is arranged on the frame, and the head of the frame is defined to be in front of the tail;
the protective guide rail is fixed at the bottom of the frame and used for crushing the obstacles;
the protective guide rail is arranged at the front side of the installation space and comprises a guide section which gradually transits from inside to outside backwards so as to guide the obstacle to the outer side of the frame; or,
the protection guide rail has two and is located respectively installation space's front and back both sides, the protection guide rail of front side include from inside to outside gradually backward transition in order to guide the barrier to the guide section in the frame outside, and the protection guide rail of rear side includes from inside to outside gradually forward transition in order to guide the barrier to the guide section in the frame outside.
The beneficial effects of the above technical scheme are that: when the 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 a vehicle runs forwards, the protective guide rail can firstly contact with a front obstacle, and then the protective guide rail can directly crush the front obstacle with respect to the low-hardness obstacle (such as soil blocks, brittle gravels and the like), and the protective guide rail comprises a guide section gradually transiting backwards from inside to outside, so that part of the crushed obstacle can move to the outer side of the frame under the guide action of the guide section; and for the obstacles (such as larger hardstone blocks, broken bricks and the like) with larger hardness and larger volume, the obstacles can impact the protective guide rail, and can move to the outer side of the vehicle frame under the guide action of the reaction force of the protective guide rail and the guide section without being pressed over the obstacles, so that the vehicle jolt can be avoided, the protective guide rail can be prevented from generating larger deformation and abrasion, the service life of the protective guide rail can be prolonged, and frequent replacement can be avoided.
When the protection guide rails have two, two protection guide rails are respectively located the front and back both sides of installation space, also set up respectively in the front and back both sides of battery package, no matter the vehicle is to go forward or reverse a car backward like this, all can play foretell effect under the effect of guide section.
Further, for the convenience of protecting the guide rail and rolling 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 includes that the cross-section is arc and the arc that the arc opening set up, and the 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 constitution of arc is used for crushing the face that rolls of barrier.
Furthermore, in order to facilitate the fixed connection between the protection guide rail and the frame, the front end and the rear end of the sealing plate are provided with more arc-shaped 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 barrier, the protective guide rail is integrally arc-shaped, and the guide section is an arc-shaped guide section.
Further, in order to enhance the protection effect on the battery pack and facilitate the squeezing and crushing or the reduction of kinetic energy of the obstacle with a small volume crossing the protection guide rail, the vehicle bottom battery protection system further comprises a squeezing plate fixed at the bottom of the vehicle frame, the squeezing plate is positioned between the installation space and the protection guide rail, the squeezing plate is provided with a squeezing surface for squeezing and crushing the obstacle, and the bottommost end of the squeezing plate is lower than the bottommost end of the protection guide rail.
Furthermore, in order to simplify the structure and facilitate the manufacture, the whole extrusion plate is a straight extrusion plate, the section of the extrusion plate is a semi-arc with an upward opening, and the arc surface of the extrusion plate forms the extrusion surface.
Furthermore, in order to enhance the protection effect on the battery pack and prevent the battery pack from being damaged and damaged due to direct contact with a higher deceleration convex hull, a harder protrusion or splashes, the vehicle bottom battery protection system further comprises a combined protection device fixed at the bottom of the vehicle frame, a mounting plate for mounting the battery pack is fixed in the mounting space on the vehicle frame, the combined protection device is located under the mounting plate and comprises a protection plate and rollers mounted on the protection plate, the rotation axis of the rollers extends in the left-right direction, and the rollers are used for being in rolling contact with a higher obstacle so as to lift the whole vehicle upwards to a certain height.
Further, in order to simplify the structure and facilitate the installation of the roller, the combined protection device further comprises a first fixing block and a second fixing block which are fixed on the protection plate, a roller shaft is arranged between the first fixing block and the second fixing block, and the roller shaft is sleeved with the roller.
Furthermore, in order to enhance the protection effect on the battery pack and prevent the battery pack from being damaged and damaged due to direct contact with a higher deceleration convex hull, a harder protrusion or splashes, the vehicle bottom battery protection system further comprises a combined protection device fixed at the bottom of the vehicle frame, a mounting plate for mounting the battery pack is fixed in the mounting space on the vehicle frame, the combined protection device is located under the mounting plate and comprises a protection plate and rollers mounted on the protection plate, the rotation axis of the rollers extends in the left-right direction, and the rollers are used for being in rolling contact with a higher obstacle so as to lift the whole vehicle upwards to a certain height.
In order to achieve the purpose, the vehicle adopts the following technical scheme:
a vehicle comprising a battery pack and an under-vehicle battery protection system, the under-vehicle battery protection system comprising:
the battery pack mounting device comprises a frame, wherein a mounting space for mounting a battery pack is arranged on the frame, and the head of the frame is defined to be in front of the tail;
the protective guide rail is fixed at the bottom of the frame and used for crushing the obstacles;
the protective guide rail is arranged at the front side of the installation space and comprises a guide section which gradually transits from inside to outside backwards so as to guide the obstacle to the outer side of the frame; or,
the protection guide rail has two and is located respectively installation space's front and back both sides, the protection guide rail of front side include from inside to outside gradually backward transition in order to guide the barrier to the guide section in the frame outside, and the protection guide rail of rear side includes from inside to outside gradually forward transition in order to guide the barrier to the guide section in the frame outside.
The beneficial effects of the above technical scheme are that: when the 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 a vehicle runs forwards, the protective guide rail can firstly contact with a front obstacle, and then the protective guide rail can directly crush the front obstacle with respect to the low-hardness obstacle (such as soil blocks, brittle gravels and the like), and the protective guide rail comprises a guide section gradually transiting backwards from inside to outside, so that part of the crushed obstacle can move to the outer side of the frame under the guide action of the guide section; and for the obstacles (such as larger hardstone blocks, broken bricks and the like) with larger hardness and larger volume, the obstacles can impact the protective guide rail, and can move to the outer side of the vehicle frame under the guide action of the reaction force of the protective guide rail and the guide section without being pressed over the obstacles, so that the vehicle jolt can be avoided, the protective guide rail can be prevented from generating larger deformation and abrasion, the service life of the protective guide rail can be prolonged, and frequent replacement can be avoided.
When the protection guide rails have two, two protection guide rails are respectively located the front and back both sides of installation space, also set up respectively in the front and back both sides of battery package, no matter the vehicle is to go forward or reverse a car backward like this, all can play foretell effect under the effect of guide section.
Further, for the convenience of protecting the guide rail and rolling 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 includes that the cross-section is arc and the arc that the arc opening set up, and the 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 constitution of arc is used for crushing the face that rolls of barrier.
Furthermore, in order to facilitate the fixed connection between the protection guide rail and the frame, the front end and the rear end of the sealing plate are provided with more arc-shaped 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 barrier, the protective guide rail is integrally arc-shaped, and the guide section is an arc-shaped guide section.
Further, in order to enhance the protection effect on the battery pack and facilitate the squeezing and crushing or the reduction of kinetic energy of the obstacle with a small volume crossing the protection guide rail, the vehicle bottom battery protection system further comprises a squeezing plate fixed at the bottom of the vehicle frame, the squeezing plate is positioned between the installation space and the protection guide rail, the squeezing plate is provided with a squeezing surface for squeezing and crushing the obstacle, and the bottommost end of the squeezing plate is lower than the bottommost end of the protection guide rail.
Furthermore, in order to simplify the structure and facilitate the manufacture, the whole extrusion plate is a straight extrusion plate, the section of the extrusion plate is a semi-arc with an upward opening, and the arc surface of the extrusion plate forms the extrusion surface.
Furthermore, in order to enhance the protection effect on the battery pack and prevent the battery pack from being damaged and damaged due to direct contact with a higher deceleration convex hull, a harder protrusion or splashes, the vehicle bottom battery protection system further comprises a combined protection device fixed at the bottom of the vehicle frame, a mounting plate for mounting the battery pack is fixed in the mounting space on the vehicle frame, the combined protection device is located under the mounting plate and comprises a protection plate and rollers mounted on the protection plate, the rotation axis of the rollers extends in the left-right direction, and the rollers are used for being in rolling contact with a higher obstacle so as to lift the whole vehicle upwards to a certain height.
Further, in order to simplify the structure and facilitate the installation of the roller, the combined protection device further comprises a first fixing block and a second fixing block which are fixed on the protection plate, a roller shaft is arranged between the first fixing block and the second fixing block, and the roller shaft is sleeved with the roller.
Furthermore, in order to enhance the protection effect on the battery pack and prevent the battery pack from being damaged and damaged due to direct contact with a higher deceleration convex hull, a harder protrusion or splashes, the vehicle bottom battery protection system further comprises a combined protection device fixed at the bottom of the vehicle frame, a mounting plate for mounting the battery pack is fixed in the mounting space on the vehicle frame, the combined protection device is located under the mounting plate and comprises a protection plate and rollers mounted on the protection plate, the rotation axis of the rollers extends in the left-right direction, and the rollers are used for being in rolling contact with a higher obstacle so as to lift the whole vehicle upwards to a certain height.
Drawings
FIG. 1 is a bottom view of a vehicle according to the present invention;
FIG. 2 is a partial block diagram of FIG. 1;
FIG. 3 is a perspective view of the guard rail of FIGS. 1 and 2;
FIG. 4 is a longitudinal cross-sectional view of the guard rail of FIGS. 1 and 2;
FIG. 5 is a perspective view of the stripper plate of FIGS. 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 shield of FIGS. 1 and 2;
FIG. 8 is a side view of the combination shield of FIGS. 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-an arc-shaped plate; 12-closing the plate; 2-extruding a plate; 21-end face; 3-a combined guard; 31-roller structure; 311-first fixed block; 312-a second fixed block; 3121-grooves; 313-a roller; 3131-perforating; 314-roller shaft; 32-protective plate; 4-mounting a plate; 41-fixing holes; 5-a battery pack; 6-vehicle frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode. The components of embodiments of the present invention 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 present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that 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.
The features and properties of the present invention are described in further detail below with reference to examples.
One embodiment of the vehicle of the present invention is: as shown in fig. 1 and 2, the vehicle includes a battery pack 5 and a vehicle bottom battery protection system, which includes a vehicle frame 6, a protection rail 1, a compression plate 2, and a combination protection device 3.
The head of the frame 6 is defined to be in front of the tail, the middle of the frame 6 is provided with an installation space for installing the battery pack 5, specifically, the frame 6 is fixed with an installation plate 4 for installing the battery pack in the installation space, as shown in fig. 11, the installation plate 4 is provided with six installation holes 41 in three rows, the installation plate 4 is fixed on three channel steels of the frame 6 through bolts, and the installation plate 4 is located above the three channel steels.
The guard rail 1 is fixed to the bottom of the carriage 6 for crushing obstacles. The protection guide rails 1 in this embodiment have two and are located respectively the front and back both sides of installation space, also set up respectively in the front and back both sides of battery package 5, and two protection guide rails 1 are the same and are symmetrical arrangement around and around, and protection guide rail 1 wholly is the arc, and the arc opening that two protection guide rails 1 whole forms sets up relatively, as shown in fig. 1.
For the protective guide rail 1 on the front side, the foremost end is located on the middle symmetrical plane of the vehicle, the left side and the right side of the protective guide rail are symmetrical relative to the foremost end, guide sections which gradually transition from inside to outside to back are respectively formed, and the guide sections can guide the obstacles to the outer side of the vehicle frame. For the protective guide rail 1 at the rear side, the rearmost end is positioned on the middle symmetrical plane of the vehicle, the left side and the right side of the protective guide rail are symmetrical relative to the rearmost end, guide sections which gradually transit forwards from inside to outside are respectively formed, and similarly, the guide sections can guide the obstacles to the outer side of the vehicle frame. Because the whole protective guide rail 1 is arc-shaped, the guide sections are arc-shaped guide sections.
Referring to fig. 3 and 4, the protection guide rail 1 includes an arc plate 11 with an arc-shaped cross section and an upward arc opening, and further includes a sealing plate 12 fixed on the top of the arc plate 11 to seal the arc opening, wherein the arc surface of the arc plate 11 forms a rolling surface for crushing the obstacle. Arc-shaped plates 11 are arranged at the front end and the rear end of the sealing plate 12 to form a front extension part and a rear extension part respectively, and the front extension part and the rear extension part are welded and fixed with the frame 6 respectively to realize that the protective guide rail 1 is fixed on the frame 6.
Through the arrangement of the front protective guide rail 1 and the rear protective guide rail 1, the vehicle can be enabled to be in contact with obstacles firstly by the protective guide rails 1 regardless of whether the vehicle runs forwards or backs backwards, the protective guide rails 1 are made of light aluminum alloy, the protective guide rails can directly crush the obstacles with low hardness (such as soil blocks, brittle gravels and the like), and partial crushed obstacles can move to the outer side of the vehicle frame under the guiding action of the guiding section; and for the obstacles (such as larger hardstone blocks, broken bricks and the like) with larger hardness and larger volume, the obstacles can impact the protective guide rail, and can move to the outer side of the vehicle frame under the guide action of the reaction force of the protective guide rail and the guide section without being pressed over the obstacles, so that the vehicle jolt can be avoided, the protective guide rail can be prevented from generating larger deformation and abrasion, the service life of the protective guide rail can be prolonged, and frequent replacement can be avoided.
As shown in fig. 1 and 2, the two squeeze plates 2 are fixed to the bottom of the vehicle frame 6, and the two squeeze plates 2 are respectively located between the installation space and the protection rail 1, that is, between the battery pack 5 and the protection rail 1. Referring to fig. 5 and 6, the whole of the extrusion plate 2 is a straight extrusion plate, 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 the obstacle, and two end surfaces 21 of the extrusion plate 2 are welded and fixed with the frame 6.
The extrusion plate 2 is made of high-strength steel, the bottommost end of the extrusion plate 2 is lower than that of the protection guide rail 1, the protection guide rail 1 can rebound and guide obstacles with high hardness and large volume to the outer side of the frame, the obstacles with small volume can cross the protection guide rail 1 (because the protection guide rail 1 cannot touch at all), the obstacles can impact the extrusion plate 2, the obstacles are extruded and crushed by the extrusion plate 2 to be smaller in volume, or the kinetic energy of the obstacles can be reduced due to extrusion crushing or blocking of the extrusion plate 2, so that even if the obstacles touch the 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 vehicle frame 6 and is located directly below the mounting plate 4. As shown in fig. 7, the combined protection device 3 includes a protection plate 32 and a roller structure 31 installed on the protection plate 32, and as shown in 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, end faces 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 of the roller shaft is inserted into a groove 3121 formed in the second fixing block 312, the roller 313 is sleeved on an outer portion of the roller shaft 314, and a through hole 3131 is formed in the roller 313.
The two roller structures 31 on one cleat 32 are arranged in tandem. The rotation axis of the roller 313 extends along the left-right direction, when the vehicle meets the 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 hull, and at the moment, the roller 313 is lifted upwards by a certain height under the action of the deceleration convex hull to avoid the battery hull from contacting with a higher obstacle. By adopting the roller mode, the friction force can be reduced, and the service life of the combined protection device 3 is prolonged.
The protection plate 32 is welded and fixed on the frame 6, specifically welded on three channel steel of the fixed mounting plate 4, the mounting plate 4 and the protection plate 32 are clamped on the upper side and the lower side of the channel steel, the distance between the mounting plate 4 and the protection plate 32 is just equal to the height of the channel steel, and the distance is 30-40mm in practical application.
The protection plate 32 is made of high-strength steel and can cover the bottom surface of the whole battery pack 5, and when a vehicle encounters a bottom puncture (such as a hard protrusion and a splash), the high-strength protection plate 32 can be in direct contact with the puncture object to prevent the bottom puncture object from colliding with the battery pack, so that the concentrated stress condition of the battery pack is avoided. And the protection plate 32 and the mounting plate 4 are separated by a distance of 30-40mm, so that even if the protection plate 32 is deformed due to the puncture and extrusion of a sharp object, the 30-40mm clearance allowance can ensure that the bottom of the battery pack is not collided.
In summary, when the vehicle bottom battery protection system works, the protection guide rail 1 firstly contacts with a road obstacle, so that the obstacle with low hardness is directly crushed, and the obstacle with high hardness and large volume directly rebounds and is guided to the outer side of the vehicle under the action of the guide section, thereby avoiding being directly pressed. For the hard and small obstacle, the obstacle will pass through the guard rail 1, hit the compression plate 2, and be compressed and crushed by the compression plate 2 or reduce the kinetic energy of the obstacle. For some obstacles that still reach the bottom of the battery pack, either hard protrusions on the ground or sudden splashes, the shielding plate 32 provides a barrier protection. For the higher barrier on the ground, such as the deceleration convex hull, the roller can be in rolling contact with the battery pack, the whole vehicle is lifted upwards by a certain height, and the barrier is prevented from contacting the bottom of the battery pack.
The vehicle can be a pure electric bus, a hybrid electric bus or a common electric car, a battery protection system at the bottom of the vehicle forms three defense lines by the protection guide rail 1, the extrusion plate 2 and the combined protection device 3, and can form a powerful protection effect on the battery pack, prevent the battery pack from being scratched or collided and further avoid the occurrence of thermal runaway fire caused by short circuit inside the battery.
In other embodiments of the vehicle, the vehicle bottom battery protection system can be provided with only two lines of defense, and is composed of a protection guide rail and a combined protection device.
In other embodiments of the vehicle, when the thickness of the protective plate is sufficient, a groove can be directly formed on the protective plate, and the roller shaft is installed in the groove, so 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 wheels on the bottom of a shopping cart.
In other embodiments of the vehicle, the vehicle bottom battery protection system can be provided with only two lines of defense, and is composed of a protection guide rail and a pressing plate.
In other embodiments of the vehicle, the cross-sectional shape of the pressing plate may be the same as that of the guard rail, and the pressing plate is also composed of an arc-shaped plate and a sealing plate.
In other embodiments of the vehicle, the entire squeeze 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 protection rails.
In other embodiments of the vehicle, the guard rail is not curved as a whole, but is splayed and is formed by two inclined sections, each constituting a guide section.
In other embodiments of the vehicle, the front-to-rear width of the closure plate may be just as wide as the opening of the arcuate plate, with no more arcuate plates, and no forward and rearward extensions.
In other embodiments of the vehicle, the cross section of the protection guide rail may also be a semicircular arc with an upward opening, and the protection guide rail is directly fixed on the frame by using the end surface.
In other embodiments of the vehicle, the vehicle bottom battery guard system may include only one guard rail and the guard rail is disposed on the front side of the battery pack, and likewise, the guard rail includes a guide section that transitions gradually rearward 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 invention is as follows: the specific structure of the vehicle bottom battery protection system is the same as that of the vehicle bottom battery protection system in the above-described vehicle embodiment, and will not be described again here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A vehicle bottom battery protection system, comprising:
the battery pack mounting device comprises a frame, wherein a mounting space for mounting a battery pack is arranged on the frame, and the head of the frame is defined to be in front of the tail;
the protective guide rail is fixed at the bottom of the frame and used for crushing the obstacles;
the protective guide rail is arranged at the front side of the installation space and comprises a guide section which gradually transits from inside to outside backwards so as to guide the obstacle to the outer side of the frame; or,
the protection guide rail has two and is located respectively installation space's front and back both sides, the protection guide rail of front side include from inside to outside gradually backward transition in order to guide the barrier to the guide section in the frame outside, and the protection guide rail of rear side includes from inside to outside gradually forward transition in order to guide the barrier to the guide section in the frame outside.
2. The vehicle bottom battery protection system according to claim 1, wherein the protection rail comprises an arc-shaped plate having an arc-shaped cross section and an upward arc-shaped opening, the protection rail further comprises a sealing plate fixed on the top of the arc-shaped plate to seal the arc-shaped opening, the sealing plate is fixedly connected to the frame, and the arc-shaped surface of the arc-shaped plate forms a rolling surface for crushing obstacles.
3. The vehicle bottom battery protection system of claim 2, wherein the forward and rearward ends of the sealing plate are formed with a plurality of arcuate plates defining a forward portion and a rearward portion, respectively.
4. The vehicle bottom battery protection system according to any one of claims 1 to 3, wherein the protection rail is generally arc-shaped, and the guide section is an arc-shaped guide section.
5. The vehicle bottom battery protection system according to any one of claims 1 to 3, further comprising a pressing plate fixed to a bottom of the frame, the pressing plate being located between the installation space and the guard rail, the pressing plate having a pressing surface for pressing the crushed obstacle, a lowermost end of the pressing plate being lower than a lowermost end of the guard rail.
6. The vehicle bottom battery protection system according to claim 5, wherein the pressing plate is a straight pressing plate as a whole, the cross section of the pressing plate is a semi-circular arc with an upward opening, and the arc surface of the pressing plate forms the pressing surface.
7. The vehicle bottom battery protection system according to claim 5, further comprising a combination guard fixed to a bottom of the vehicle frame, wherein a mounting plate for mounting the battery pack is fixed to the vehicle frame in the mounting space, the combination guard is located directly below the mounting plate, the combination guard includes a protection plate and a roller mounted on the protection plate, a rotation axis of the roller extends in a left-right direction, and the roller is configured to be in rolling contact with an upper obstacle to lift the entire vehicle upward to a certain height.
8. The vehicle bottom battery protection system according to claim 7, wherein the combination guard further comprises a first fixing block and a second fixing block fixed on the guard plate, a roller shaft is disposed between the first fixing block and the second fixing block, and the roller is sleeved outside the roller shaft.
9. The vehicle bottom battery protection system according to any one of claims 1 to 3, further comprising a combined protection device fixed at the bottom of the vehicle frame, wherein a mounting plate for mounting the battery pack is fixed on the vehicle frame in the mounting space, the combined protection device is located right below the mounting plate, the combined protection device comprises a protection plate and a roller mounted on the protection plate, a rotation axis of the roller extends in the left-right direction, and the roller is used for being in rolling contact with a higher obstacle so as to lift the whole vehicle upwards to a certain height.
10. A vehicle comprising a battery pack and the vehicle underbody battery protection system of any one of claims 1 to 9.
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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 true CN114516262A (en) | 2022-05-20 |
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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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