CN112229594A - New energy automobile bottom impact test platform - Google Patents
New energy automobile bottom impact test platform Download PDFInfo
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- CN112229594A CN112229594A CN202011112020.XA CN202011112020A CN112229594A CN 112229594 A CN112229594 A CN 112229594A CN 202011112020 A CN202011112020 A CN 202011112020A CN 112229594 A CN112229594 A CN 112229594A
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- 238000009863 impact test Methods 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 16
- 230000001133 acceleration Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
Abstract
The invention relates to the field of automobile testing equipment, in particular to a new energy automobile bottom impact test bed which comprises a bed body, wherein a control system is arranged on the bed body, an emission mechanism capable of moving under the control of the control system is arranged on the bed body, the emission mechanism can emit impact balls towards the bottom of a static test automobile, and the control system controls the emission mechanism to adjust the angle and the speed of the impact balls before the impact balls are emitted. According to the invention, by adjusting the launching angle and the launching speed of the impact ball, the impact of the impact ball can simulate the impact of different objects, and the accuracy of the simulation result of the new energy automobile bottom impact test can be improved.
Description
Technical Field
The invention relates to the field of automobile testing equipment, in particular to a new energy automobile bottom impact test bed.
Background
The influence caused when the whole vehicle runs and is impacted by broken stones is simulated, the safety performance of the battery system is evaluated by judging parameters such as front and back functional consistency, insulation resistance and air tightness according to a test result, and the integrated design concept of the battery pack and the whole vehicle is a key factor for controlling the ground impact damage severity of the electric vehicle. Structural component such as car bottom guard plate, transverse beam, side rail can provide the protection of various levels for the battery package to the vehicle has still designed the one deck steel sheet at the battery package bottom, protects the battery package, but, need leave the clearance at steel sheet and water-cooling board (lower box bottom) for improve the security that the battery package was abused in the bottom.
For bottom mechanical abuse of the electric automobile, the related test standards in the industry are few due to the complex form and the lack of road traffic accident data accumulation. At present, the whole vehicle collision test of the electric vehicle is mainly carried out from the front, the side and the back, and the bottom collision resistance is not tested. The abuse refers to mechanical impact or mechanical impact caused by uncertain factors in the running process of the vehicle, such as well cover centering of a battery pack chassis of the electric vehicle, uneven ground projection centering of a battery box bottom and the like. Meanwhile, the traditional battery mechanical safety evaluation, such as extrusion, needling and the like, can only qualitatively evaluate the safety of the lithium ion battery. However, the road conditions are complex, and the currently developed experimental equipment is difficult to accurately simulate the impact conditions of various road conditions on the battery pack.
Disclosure of Invention
The invention aims to provide a new energy automobile bottom impact test bed to simulate different impacting objects.
The new energy automobile bottom impact test stand in this scheme includes the stage body, be equipped with control system on the stage body, be provided with the launching mechanism that can move under control system's control on the stage body, launching mechanism can launch towards static test automobile bottom and strike the ball, control system control launching mechanism adjusts the angle and the speed of striking the ball earlier before launching the ball.
The beneficial effect of this scheme is:
when the automobile bottom impact test is carried out, the impact ball is transmitted through the transmitting mechanism to impact the bottom of the test automobile, the angle and the speed of the impact ball are adjusted when the impact ball is transmitted, the impact of the impact ball can be used for simulating the impact of different objects, such as stones, cement, bricks, wood and the like, and the accuracy of the simulation result of the new energy automobile bottom impact test is improved.
Further, the launching mechanism comprises a base, a launching tube for containing impact balls is arranged on the base, an air pressure cavity for storing compressed air is fixedly arranged at the bottom of the launching tube, the air pressure cavity is communicated with the inside of the launching tube, and a sealing switch is arranged at the joint of the air pressure cavity and the launching tube.
The beneficial effects are that: the launching mechanism stores compressed gas in the air pressure cavity for energy storage, then the compressed gas pushes out the impact ball in the launching tube for experiment, and the air pressure is used as power, so that the impact ball can be conveniently pushed out at different speeds.
Further, the launching mechanism further comprises an angle adjusting assembly, and the angle adjusting assembly drives the base to rotate by 45 degrees in the positive direction or the negative direction.
The beneficial effects are that: the angle adjusting component drives the base to rotate, the base can drive the air pressure cavity and the launching barrel to rotate together to adjust the angle, and the stroke of pushing the impact ball by air pressure is guaranteed to be a straight line.
Further, an air pressure sensor is arranged in the air pressure cavity, and the air pressure sensor detects an air pressure value and sends the air pressure value to the control system.
The beneficial effects are that: the pressure in the air pressure cavity in the process of filling the compressed air can be detected through the air pressure sensor, so that the reflection speed of the impact ball can be controlled conveniently.
Further, a walking assembly which moves under the control of the control system is arranged at the bottom of the base, the walking assembly comprises a moving trolley and a guide rail, and the guide rail is laid on the platform body.
The beneficial effects are that: the base can walk automatically under walking assembly's drive, need not the position of artificial regulation base, and the operation is simpler.
Further, the sealing switch is arranged at the launching port of the launching barrel, an acceleration sensor is arranged inside the impact ball, and the acceleration sensor detects the speed value converted by the impact ball and sends the speed value to the control system.
The beneficial effects are that: the sealing switch is arranged at the launching port of the launching tube, the launching tube can be filled with compressed gas when the compressed gas is filled in, and the impact ball is driven to vibrate or move in the launching tube before launching, so that the impact ball has a certain speed before launching, the impact ball is convenient to reach the impact speed, and the impact conditions of different objects are simulated.
Further, be equipped with protector on the stage body, protector is including the bottom plate that can supply the impact ball to pass through, the support frame has set firmly between bottom plate and the stage body, the polylith guard plate has set firmly in the circumference of bottom plate.
The beneficial effects are that: the protection device is integrated with the table body, and when testing different positions, the protection device moves along with the table body, does not need to adjust the position of the protection device independently, can protect in the circumferential direction after the impact ball is impacted through the protection device, and prevents the impact ball from popping out from the circumferential direction to cause the surrounding personnel to be injured or equipment to be damaged.
Furthermore, an impact opening for the impact ball to pass through is formed in the bottom plate, two door plates capable of being opened or closed rapidly from two sides are arranged at the bottom of the bottom plate, and a telescopic assembly for driving the door plates to move is arranged on the supporting frame.
The beneficial effects are that: when launching towards the ball, flexible subassembly drives the door plant and opens fast and supply to dash the ball and jet out from strikeing the mouth, after launching towards the ball, drives the door plant by flexible subassembly and closes fast and strike the mouth, avoids strikeing the ball and kick-backs from strikeing the mouth behind the impact test car bottom.
Furthermore, a soft protective layer is fixedly arranged on the side wall, facing the bottom plate, of the protective plate, and the thickness of the protective layer is larger than the diameter of the impact ball.
The beneficial effects are that: the structure of guard plate and inoxidizing coating had both guaranteed to bear certain impact strength, prevented that the guard plate from damaging can't play the guard action, can be by the inoxidizing coating buffering again impact force of impact ball.
Further, the covering area of the door panel is larger than the area of the impact opening.
The beneficial effects are that: the door plant can cover the impact mouth completely, avoids strikeing the ball and kick-backs behind the impact test car bottom and cause launching mechanism to damage.
Drawings
FIG. 1 is a longitudinal sectional view of a first embodiment of a new energy automobile bottom impact test bed according to the invention;
FIG. 2 is a longitudinal sectional view of a sealing switch in a second embodiment of the new energy automobile bottom impact test stand according to the invention;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a transverse cross-sectional view of a protection plate in a third embodiment of the new energy automobile bottom impact test stand.
Detailed Description
The following is a more detailed description of the present invention by way of specific embodiments.
Reference numerals in the drawings of the specification include: the device comprises a table body 1, a support frame 2, a telescopic component 3, a door panel 4, a moving trolley 5, an adjusting component 6, a base 7, an air pressure cavity 8, an impact ball 9, an impact port 10, an emission tube 11, a protection plate 12, a protection layer 13, a bottom plate 14, a sealing plate 15, a groove 16, an elastic sealing block 17, a rubber sealing sheet 18, a micro motor 19, a support 20, an inflatable air bag 21, a pressure air valve 22 and a controlled air valve 23.
Example one
New energy automobile bottom impact test platform, as shown in FIG. 1: the device comprises a table body 1, wherein a control system is arranged on the table body 1, and the control system can be composed of an existing industrial control computer, a PLC and a display, which are not described herein; the table body 1 is provided with a launching mechanism capable of moving under the control of a control system, the launching mechanism can launch the impact ball 9 towards the bottom of a static test automobile, the impact ball 9 is replaceable, and the control system controls the launching mechanism to adjust the angle and the speed of the impact ball 9 when the impact ball 9 is launched.
The launching mechanism comprises a base 7, a walking assembly which moves under the control of a control system is mounted at the bottom of the base 7, the walking assembly comprises a moving trolley 5 and a track for guiding, the moving trolley 5 moves along the track, the track is arranged according to a preset walking path, and the track is laid on the top of the table body 1; the base 7 is provided with a launching tube 11 for containing the impact ball 9, the bottom of the launching tube 11 is welded with an air pressure cavity 8 for storing compressed air, the air pressure cavity 8 is filled with the compressed air through an existing inflator pump, the air pressure cavity 8 is communicated with the inside of the launching tube 11, a sealing switch is arranged at the joint of the air pressure cavity 8 and the launching tube 11, and the sealing switch can be an existing electronic pneumatic valve.
The launching mechanism further comprises an angle adjusting component 6, the angle adjusting component 6 is fixedly installed on the movable trolley 5, the angle adjusting component 6 drives the base 7 to rotate 45 degrees in the positive direction or the negative direction, the angle adjusting component 6 can use the existing stepping motor, the base 7 is welded on an output shaft of the stepping motor, and the positive direction and the negative direction correspond to the rotating direction of the stepping motor.
Install baroceptor in the atmospheric pressure cavity 8, baroceptor is available, and baroceptor detects the atmospheric pressure value and sends control system, and baroceptor can send the atmospheric pressure value to control system through the wire.
The table body 1 is provided with a protection device, the protection device comprises a bottom plate 14 through which impact balls 9 can pass, the bottom plate 14 is square, a plurality of support frames 2 are welded between the bottom plate 14 and the table body 1, the bottom plate 14 is provided with an impact port 10 through which the impact balls 9 can pass, a plurality of protection plates 12 are welded on the circumference of the bottom plate 14, for example, four protection plates 12, the protection plates 12 enclose a square area, a soft protection layer 13 is bonded on the side wall, facing the bottom plate 14, of each protection plate 12, and the thickness of each protection layer 13 is larger than the diameter of each impact ball 9; two door plants 4 that can open or close fast from both sides are installed to the bottom of bottom plate 14, install the flexible subassembly 3 that drives door plant 4 and remove on the support frame 2, flexible subassembly 3 and door plant 4 one-to-one, the usable servo electric cylinder of flexible subassembly 3, the area of covering of door plant 4 is greater than the area of strikeing mouthful 10.
An acceleration sensor is embedded in the impact ball 9, detects the speed value of the impact ball 9 and sends the speed value to a control system, the acceleration sensor sends the converted speed value to the control system through a data line, the size of the launching tube 11 can be set to be larger to accommodate the data line, and the data line is not fixed in the launching tube 11 so as not to influence the launching of the impact ball 9.
The specific implementation process is as follows:
in a specific test, the mass of the impact ball 9 is 0-100 kg, the impact ball 9 is made of steel, iron, lead, manganese steel, lead, alloy or inorganic material, the impact kinetic energy is 0-4000J, and the maximum impact velocity is 100 m/s.
When a new energy source test automobile bottom impact test is carried out, the test automobile is fixed above the platform body 1 through the lifting frame, and a certain space is kept below the test automobile; the control system controls the stepping motor to drive the base 7 to rotate by a certain angle towards the preset position, the launching tube 11 is aligned to the preset position, the control system controls the inflator pump to flush compressed gas into the air pressure cavity for energy storage, the air pressure value in the air pressure cavity reaches the preset value, meanwhile, the air pressure value in the air pressure cavity is detected through the air pressure sensor and is launched to the control system, when the air pressure value is stable, the control system controls the sealing switch to be opened, the compressed gas is flushed out to push the impact ball 9 at a certain angle and speed, the impact ball 9 is impacted to the bottom of the test automobile for impact test, impact of different objects is simulated through the impact angle and speed of the impact ball 9, for example, stones, cement, bricks, wood and the like, and the accuracy of a simulation result of the bottom impact test of the new energy automobile is improved.
Example two
The difference with embodiment one lies in, as shown in fig. 2 and fig. 3, sealing switch sets up the transmission mouth department at launch canister 11, sealing switch includes two block closure seals at the shrouding 15 in the 11 exit of launch canister, shrouding 15 has seted up the recess 16 that can hold launch canister 11 towards on the lateral wall of launch canister 11 one side, it has elastic sealing block 17 to bond in the recess 16, it has rubber mounting 18 to bond on the lateral wall that shrouding 15 contacts, there is the micro motor 19 with 15 one-to-one of shrouding through support 20 fixed mounting on the lateral wall of launch canister 11, micro motor 19 drives two shrouding 15 and opens simultaneously under control system's control, support 20 welds on the 11 lateral wall of launch canister, shrouding 15 welds respectively on micro motor 19's output shaft.
When a sealing switch of the control system is opened, the control system controls the micro motor 19 to drive the sealing plate 15 to be simultaneously opened, the impact ball 9 is launched to perform an impact test, the launching tube 11 can be filled with compressed gas when the compressed gas is charged, and the impact ball 9 is driven to vibrate or move in the launching tube 11 before launching, so that the impact ball 9 has a certain speed before launching, the impact ball 9 can reach the impact speed conveniently, and the impact conditions of different objects can be simulated.
EXAMPLE III
The difference from the first embodiment is that, as shown in fig. 4, the protective layer 13 is an inflatable airbag 21 pre-filled with compressed air, the inflatable airbag 21 is adhered to the inner wall of the protective layer 12, an inflating nozzle for inflating the compressed air is arranged on the inflatable airbag 21, the inflating nozzle inflates the air through an air pump to keep the inflatable airbag 21 in an inflated state, a pressure air valve 22 and a plurality of controlled air valves 23 are arranged on the inflatable airbag 21, the pressure air valve 22 and the controlled air valves 23 are mounted on the protective layer 12 so as not to be affected by the impact of the impact ball 9, the air pressure in the inflatable airbag 21 is just not against the pressure air valve 22, the controlled air valves 23 are in signal connection with a control system, the controlled air valves 23 can be existing micro air valves, such as air valves of WVR530 model, and five controlled air valves.
In the experimental process, the impact ball 9 is used for simulating that foreign matters fly to impact stones, cement, bricks and the like of a vehicle due to rotation of a tire in the driving process of the vehicle, the impact ball 9 needs a high impact speed, and if the impact ball 9 is not buffered to a large extent after an impact experiment, the impact ball 9 is very easy to collide with surrounding objects to generate rebound, so that equipment is damaged, and even people are impacted. In the embodiment, in the process of performing an impact test, when the control system controls the telescopic assembly 3 to start, any controlled air valve 23 is controlled to be opened, and meanwhile, whether the speed value of the impact ball 9 has a sudden change is judged in real time by the control system, that is, the speed value of the impact ball 9 at the moment of impacting a battery pack of a vehicle is suddenly changed to zero, and then rebounds to generate a certain speed, when the sudden change of the speed value is judged, the control system controls the number of the opened controlled air valves 23 according to the real-time speed value after the impact ball 9 impacts, for example, when the speed of the impact ball 9 is greater than 80m/s, the control system controls five controlled air valves 23 to be opened, when the speed of the impact ball 9 is 70m/s-80m/s, the control system controls four controlled air valves 23 to be opened, when the speed of the impact ball 9 is 60m, when the speed of the impact ball 9 is 50m/s-60m/s, the control system controls the two controlled air valves 23 to be opened, and when the speed of the impact ball 9 is less than 50m/s, the control system keeps one controlled air valve 23 to be opened.
When the impact ball 9 impacts the inflatable air bag 21, the inflatable air bag 21 is pressed rapidly, compressed air can extrude the pressure air valve 22 to perform certain amount of exhaust operation, the impact kinetic energy of the impact ball 9 is converted into the exhaust kinetic energy of the inflatable air bag 21, equipment damage or staff injury caused by rebound of the impact ball 9 is prevented, a certain number of controlled air valves 23 are controlled to be opened according to the speed of the impact ball 9, the motion power of the impact ball 9 can be buffered, a certain amount of compressed air can be kept in the inflatable air bag 21, and the time for inflation in the next use is shortened.
Compressed air in the inflatable air bag 21 can be shriveled to a certain degree after being reduced, the inflatable air bag 21 can be slouched off to trip the impact ball 9, the impact ball 9 is further prevented from rebounding again after being impacted on the protection plate 12, and safety problems caused by rebounding of the impact ball 9 after impact tests are prevented.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. New energy automobile bottom impact test platform, including the stage body, be equipped with control system on the stage body, its characterized in that: the table body is provided with a launching mechanism capable of moving under the control of a control system, the launching mechanism can launch impact balls towards the bottom of a static test automobile, and the control system controls the launching mechanism to adjust the angle and speed of the impact balls before the impact balls are launched.
2. The new energy automobile bottom impact test stand according to claim 1, characterized in that: the launching mechanism comprises a base, a launching tube for containing impact balls is arranged on the base, an air pressure cavity for storing compressed air is fixedly arranged at the bottom of the launching tube, the air pressure cavity is communicated with the inside of the launching tube, and a sealing switch is arranged at the joint of the air pressure cavity and the launching tube.
3. The new energy automobile bottom impact test stand according to claim 2, characterized in that: the launching mechanism further comprises an angle adjusting assembly, and the angle adjusting assembly drives the base to rotate 45 degrees in the positive direction or the negative direction.
4. The new energy automobile bottom impact test stand according to claim 3, characterized in that: an air pressure sensor is arranged in the air pressure cavity, and the air pressure sensor detects an air pressure value and sends the air pressure value to the control system.
5. The new energy automobile bottom impact test stand according to claim 3, characterized in that: the base bottom is equipped with the running assembly who removes under control system's control, the running assembly includes travelling car and the track that leads, the track is laid on the stage body.
6. The new energy automobile bottom impact test stand according to claim 4, characterized in that: the sealed switch sets up in the transmission mouth department of launching tube, the inside acceleration sensor that is equipped with of impact ball, acceleration sensor detects the speed value of impact ball conversion and sends control system.
7. The new energy automobile bottom impact test stand according to any one of claims 1 to 6, characterized in that: the table body is provided with a protection device, the protection device comprises a bottom plate through which an impact ball can pass, a support frame is fixedly arranged between the bottom plate and the table body, and a plurality of protection plates are fixedly arranged on the circumference of the bottom plate.
8. The new energy automobile bottom impact test stand according to claim 7, characterized in that: the bottom plate is provided with an impact port for the impact ball to pass through, the bottom of the bottom plate is provided with two door plates capable of being opened or closed quickly from two sides, and the support frame is provided with a telescopic assembly for driving the door plates to move.
9. The new energy automobile bottom impact test stand according to claim 8, characterized in that: the side wall of the protection plate facing the bottom plate is fixedly provided with a soft protection layer, and the thickness of the protection layer is larger than the diameter of the impact ball.
10. The new energy automobile bottom impact test stand according to claim 8, characterized in that: the covering area of the door panel is larger than the area of the impact opening.
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| CN202011112020.XA CN112229594B (en) | 2020-10-16 | 2020-10-16 | New energy automobile bottom impact test bed |
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| CN202011112020.XA CN112229594B (en) | 2020-10-16 | 2020-10-16 | New energy automobile bottom impact test bed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113871734A (en) * | 2021-09-14 | 2021-12-31 | 军事科学院系统工程研究院军事新能源技术研究所 | System for carrying out safety test on methanol fuel cell stack and methanol fuel tank |
| CN114370919A (en) * | 2022-01-10 | 2022-04-19 | 浙江东鼎电子股份有限公司 | Special dynamic flat weighing system for road vehicles and weighing method thereof |
| CN114414189A (en) * | 2022-01-26 | 2022-04-29 | 中国汽车工程研究院股份有限公司 | Test device for simulating bottom collision of vehicle battery system |
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