Battery pack bottom scratching test obstacle and battery pack collision test system

Abstract

The utility model relates to the technical field of battery pack detection, and discloses a battery pack bottom scarification test obstacle and battery pack collision test system, which comprises a substrate used for being pre-buried in a ground foundation; the fixed seat is detachably assembled on the base plate, and the fixed seat is provided with an inclined surface; the movable pressing blocks are detachably assembled on the inclined face, each movable pressing block is provided with an assembly hole, the multiple movable pressing blocks are arranged in the inclination direction of the inclined face at intervals, and the assembly holes of the movable pressing blocks are coaxially formed; the collision column is inserted into the assembly hole, and the bottom end of the collision column is assembled with the fixed seat in a supporting and stopping manner. The base plate protects the ground foundation, and the ground is prevented from being damaged in the testing process; the fixed seat is detachably connected with the substrate, and the fixed seat, the collision column and other test equipment can be detached after the test is finished; the collision column is inserted into the assembly hole, when the collision column is bent and damaged after testing, only the collision column needs to be replaced, the fixing base and the movable pressing block can be repeatedly used, and the testing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack detection, in particular to a battery pack bottom scratch test obstacle and a battery pack collision test system. Background Art

[0002] With the vigorous development of new energy vehicles, the requirements for battery pack quality are getting higher and higher, the safety of battery packs is becoming more and more important, and the significance of detection is becoming greater and greater. At present, the analysis of the scratch on the bottom of the battery pack mainly uses computer software to simulate the conditions when the scratch occurs, and the software analyzes the results of the collision scratch. Since there are many uncertain and unstable factors in the actual working conditions, which cannot be done by computer software analysis, the results of computer analysis are often quite different from the actual collision scratch results. In order to more realistically detect the results of the actual battery pack being hit, it is necessary to perform collision impact tests close to the actual working conditions to detect related safety performance. The real bottom scratch test method is conducive to better research and development and improve the safety and stability of the battery pack.

[0003] The commonly used bottom scratch standard is to let the battery pack hit the obstacle at a certain speed, with steel bars as the main collision object. Most obstacles are simply steel bars welded to an obstacle base, and then the base is opened and fixed to the ground with expansion bolts. Due to the different collision speeds, when the obstacle is hit at a higher speed, the expansion bolts cannot completely fix the obstacle. After the collision, the entire obstacle will be lifted up and damage the ground, affecting the test results; even if the obstacle does not lift up, the deformation of the steel bars after the test will make the entire obstacle scrapped and need to be remade, increasing the cost of the battery pack scratch test. Utility Model Content

[0004] The purpose of the utility model is to provide a battery pack bottom scratch test obstacle to solve the problems of damaging the ground and affecting the test results and high cost during the battery pack bottom scratch test in the prior art; the utility model also provides a battery pack collision test system using the battery pack bottom scratch test obstacle.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a battery pack bottom scratch test obstacle, comprising:

[0006] A base plate, the base plate is used to be pre-buried in a ground foundation;

[0007] A fixing seat, the fixing seat can be detachably assembled on the base plate, and the fixing seat has an inclined surface;

[0008] A movable pressing block, the movable pressing block can be detachably assembled on the inclined surface, the movable pressing block has an assembly hole, a plurality of movable pressing blocks are arranged at intervals along the inclined direction of the inclined surface, and the assembly holes of the movable pressing blocks are coaxially arranged;

[0009] A collision column, the collision column is inserted into the assembly hole, and the bottom end of the collision column is supported and blocked with the fixed seat for assembly.

[0010] Preferably, it further includes a pressing plate, the pressing plate is detachably assembled on the substrate, a plurality of the pressing plates are assembled on the substrate, and each pressing plate is tightly assembled with the fixed seat.

[0011] Preferably, the pressing plate is in an arcuate structure, and the pressing plate presses the fixed seat in a form with the back of the bow facing away from the base.

[0012] Preferably, the substrate has threaded holes, a plurality of the threaded holes are arranged in an array, the pressing plate has strip-shaped holes extending along the length direction of the pressing plate, and fastening bolts are connected between the pressing plate and the threaded holes, and the fastening bolts are inserted through the strip-shaped holes.

[0013] Preferably, a stepped platform is provided at the orifice of the strip-shaped hole, and a slider is also sleeved on the fastening bolt, and the slider is slidably assembled with the stepped platform.

[0014] Preferably, it further includes a stop bar, the stop bar is fixedly assembled on the substrate, is assembled on the side of the fixed seat away from the collision column, and the stop bar is blocked and assembled with the fixed seat.

[0015] Preferably, the fixed seat includes a bottom plate, a support plate and a fixing plate, the bottom plate is supported on the substrate, the support plate is fixedly assembled on the bottom plate, the fixing plate is inclined and supported on the bottom plate and the support plate, the plate surface of the fixing plate facing away from the bottom plate forms the inclined surface, and the movable pressing block is detachably fixed on the fixing plate.

[0016] Preferably, the fixed seat further includes a stop block, the stop block is welded and fixed on the bottom plate, the stop block is located at the bottom of the inclined surface, and the collision column is blocked and assembled with the stop block.

[0017] Preferably, the fixed seat further includes a movable sleeve, the movable sleeve is detachably fixed on the fixing plate, the movable sleeve is coaxially arranged with the assembly hole, and the movable sleeve is assembled on the side of the movable pressing block away from the stop block.

[0018] The present utility model also provides a battery pack collision test system, including the battery pack bottom scratching test obstacle described in any one of the above technical solutions.

[0019] Compared with the prior art, the beneficial effects of the battery pack bottom scratch test obstacle and the battery pack collision test system according to the embodiment of the present utility model are as follows: The substrate is embedded in the ground foundation to protect the ground foundation. The fixing seat can be assembled on the substrate to avoid damaging the ground during the test and improve the accuracy of the test results; the fixing seat and the substrate are detachably connected, which is convenient for installation. After the test, the test equipment such as the fixing seat and the collision column can be disassembled without affecting the use of the ground foundation; the movable pressing block can be detachably assembled on the fixing seat, and the collision column is inserted into the assembly hole of the movable pressing block. When the collision column is bent and damaged after the test, only the movable pressing block needs to be disassembled and the collision column is replaced, and the fixing seat and the movable pressing block can be reused, reducing the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the battery pack bottom scratch test obstacle of the present utility model;

[0021] Figure 2 is Figure 1 the front view of the battery pack bottom scratch test obstacle;

[0022] Figure 3 is Figure 1 the schematic structural view of the pressing plate of the battery pack bottom scratch test obstacle;

[0023] Figure 4 is Figure 1 the assembly schematic view of the fixing seat and the collision column of the battery pack bottom scratch test obstacle.

[0024] In the figure, 1. Substrate, 11. Threaded hole, 2. Fixing seat, 21. Inclined surface, 22. Bottom plate, 23. Support plate, 24. Fixed plate, 25. Stopper, 26. Movable sleeve, 3. Movable pressing block, 31. Assembly hole, 4. Collision column, 5. Pressing plate, 51. Strip-shaped hole, 52. Step platform, 6. Fastening bolt, 61. Slide block, 7. Stop bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not intended to limit the scope of the present utility model.

[0026] A preferred embodiment of the battery pack bottom scratch test obstacle of the present utility model is as Figures 1 to 4As shown, the bottom cutting test obstacle of the battery pack includes a base plate 1, a fixed seat 2, a movable pressing block 3, and a collision column 4. The base plate 1 is used to be embedded in the ground foundation to protect the ground foundation. The fixed seat 2 is used to provide an assembly foundation for the movable pressing block 3 and the collision column 4. The movable pressing block 3 is used to fix the collision column 4 to prevent the collision column 4 from moving during the test. The collision column 4 is used to cut the bottom of the battery pack during the test. In this embodiment, the base plate 1 is a stainless steel plate, and the base plate 1 is cast in the ground foundation by an embedded method, which can prevent the fixed seat 2 from moving and damaging the ground during the test, and can also increase the firmness of the assembly of the fixed seat 2 and improve the accuracy of the test results.

[0027] The fixed seat 2 is detachably assembled on the base plate 1, and the fixed seat 2 is detachably connected to the base plate 1, so that the fixed seat 2 can be removed from the base plate 1 after the test and installed on the base plate 1 before the test, which not only ensures the test efficiency but also avoids the fixed seat 2 remaining on the ground all the time after the test, affecting the ground use and damaging the fixed seat 2. The fixed seat 2 has an inclined surface 21, and the collision column 4 is assembled on the inclined surface 21, making the collision column 4 inclined, providing conditions for completing the cutting test of the battery pack.

[0028] The movable pressing block 3 is detachably assembled on the inclined surface 21. The movable pressing block 3 has an assembly hole 31, and the assembly hole 31 is a circular through hole. A plurality of movable pressing blocks 3 are arranged at intervals along the inclined direction of the inclined surface 21, and the assembly holes 31 of each movable pressing block 3 are coaxially arranged to facilitate the assembly of the collision column 4 in the assembly hole 31. In this embodiment, there are three movable pressing blocks 3, and the three movable pressing blocks 3 are arranged at intervals on the inclined surface 21. The three movable pressing blocks 3 are used to limit and fix the collision column 4 to ensure the stability of the collision column 4 during the test. In this embodiment, an arc-shaped groove is opened on one side of the movable pressing block 3 close to the inclined surface 21. After the movable pressing block 3 is assembled on the fixed seat 2, the arc-shaped groove is buckled on the inclined surface 21 to form the assembly hole 31.

[0029] The collision column 4 is inserted into the assembly hole 31, and the bottom end of the collision column 4 is supported and blocked with the fixed seat 2. The collision column 4 is inserted and matched with the movable pressing block 3, and the bottom end is supported and blocked with the fixed seat 2. The movable pressing block 3 and the fixed seat 2 are used to limit the collision column 4, and at the same time, there is no fixed assembly between the collision column 4 and the movable pressing block 3 and the fixed seat 2. When the collision column 4 is bent and damaged during the test, the collision column 4 can be pulled out of the assembly hole 31 and replaced to repeat the test, reducing the use cost of this obstacle.

[0030] The substrate 1 of the test obstacle for cutting the bottom of the battery pack is embedded in the ground foundation to protect the ground foundation. The fixing seat 2 can be assembled on the substrate 1 to avoid damaging the ground during the test and improve the accuracy of the test results. The fixing seat 2 is detachably connected to the substrate 1, which is convenient for installation. After the test, the test equipment such as the fixing seat 2 and the collision column 4 can be disassembled without affecting the use of the ground foundation. The movable pressing block 3 can be detachably assembled on the fixing seat 2, and the collision column 4 is inserted into the assembly hole 31 of the movable pressing block 3. When the collision column 4 is bent and damaged after the test, only the movable pressing block 3 needs to be disassembled and the collision column 4 needs to be replaced. The fixing seat 2 and the movable pressing block 3 can be reused, reducing the test cost.

[0031] Preferably, it further includes a pressing plate 5. The pressing plate 5 is detachably assembled on the substrate 1, and a plurality of pressing plates 5 are assembled on the substrate 1, and each pressing plate 5 is tightly assembled with the fixing seat 2.

[0032] The pressing plate 5 is detachably assembled with the substrate 1 and tightly assembled with the fixing seat 2. By using the pressing plate 5 to tightly press the fixing seat 2, when disassembling the fixing seat 2, only the pressing plate 5 needs to be loosened or tightened to achieve disassembly. The disassembly and assembly of the fixing seat 2 are more flexible and do not damage the ground.

[0033] Preferably, the pressing plate 5 is in an arcuate structure, and the pressing plate 5 presses the fixing seat 2 with the back of the arc facing away from the base.

[0034] The pressing plate 5 is in an arcuate structure. When assembled, the pressing plate 5 presses the fixing seat 2 with the back of the arc facing upwards. During the test, the pressing plate 5 receives an upward acting force from the fixing seat 2, and this acting force causes the pressing plate 5 to deform in the opposite direction to the arc shape. By using the arcuate structure of the pressing plate 5, the fastening force on the fixing seat 2 is increased, avoiding the movement of the fixing seat 2 during the test.

[0035] Preferably, the substrate 1 has threaded holes 11, and a plurality of threaded holes 11 are arranged in an array. The pressing plate 5 has a strip-shaped hole 51 extending along the length direction of the pressing plate 5. A fastening bolt 6 is connected between the pressing plate 5 and the threaded hole 11, and the fastening bolt 6 is inserted through the strip-shaped hole 51.

[0036] A plurality of threaded holes 11 are arranged in an array on the substrate 1, so that the pressing plate 5 and the substrate 1 can be detachably assembled through the fastening bolt 6, simplifying the assembly form between the pressing plate 5 and the substrate 1. At the same time, the fixing and disassembly of the pressing plate 5 will not damage the ground. The strip-shaped hole 51 is provided on the pressing plate 5, and the fastening bolt 6 can move in the strip-shaped hole 51, facilitating assembly with different threaded holes 11 on the substrate 1 and facilitating adjustment of the position of the pressing plate 5.

[0037] Preferably, a stepped platform 52 is provided at the orifice of the strip-shaped hole 51, and a slider 61 is also sleeved on the fastening bolt 6, and the slider 61 is slidably assembled with the stepped platform 52.

[0038] The slider 61 on the fastening bolt 6 is slidably assembled with the stepped platform 52 at the orifice of the strip-shaped hole 51. There is an anti-rotation fit between the slider 61 and the stepped platform 52, which can define the moving direction of the fastening bolt 6 and prevent the fastening bolt 6 from loosening. At the same time, it can also prevent damage to the stepped platform 52 when the fastening bolt 6 is screwed.

[0039] Preferably, it further includes a stop bar 7. The stop bar 7 is fixedly assembled on the substrate 1 and is assembled on the side of the fixed seat 2 away from the collision column 4. The stop bar 7 is in a blocking fit with the fixed seat 2.

[0040] The stop bar 7 is fixedly assembled on the substrate 1 on the side of the fixed seat 2 away from the collision column 4. The stop bar 7 can block the fixed seat 2. During the test, the battery pack moves from the fixed seat 2 towards the stop bar 7. At a relatively high-speed collision, the stop bar 7 can effectively prevent the fixed seat 2 from sliding and affecting the test results. In this embodiment, the stop bar 7 is fixedly assembled on the threaded hole 11 of the substrate 1 by bolts.

[0041] Preferably, the fixed seat 2 includes a bottom plate 22, a support plate 23 and a fixing plate 24. The bottom plate 22 is supported on the substrate 1. The support plate 23 is fixedly assembled on the bottom plate 22. The fixing plate 24 is inclined to support the bottom plate 22 and the support plate 23. The plate surface of the fixing plate 24 facing away from the bottom plate 22 forms an inclined surface 21. The movable pressing block 3 is detachably fixed on the fixing plate 24.

[0042] The fixing plate 24 is inclined to support the bottom plate 22 and the support plate 23. In this embodiment, the bottom plate 22, the support plate 23 and the fixing plate 24 are fixedly welded to each other, so that the fixed seat 2 forms an integral body, increasing the stability of the fixed seat 2. The support plate 23 is used to increase the height on one side of the fixing plate 24, so that the plate surface of the fixing plate 24 facing away from the bottom plate 22 forms an inclined surface 21, simplifying the structure of the inclined surface 21. The movable pressing block 3 is detachably fixed on the fixing plate 24. In this embodiment, the movable pressing block 3 and the fixing plate 24 are detachably connected by bolts, which is convenient for disassembling the movable pressing block 3 to replace the collision column 4 after the collision column 4 is damaged.

[0043] Preferably, the fixed seat 2 further includes a stop block 25. The stop block 25 is welded and fixed to the bottom plate 22. The stop block 25 is located at the bottom of the inclined surface 21. The collision column 4 is in a blocking fit with the stop block 25.

[0044] The stop block 25 is welded and fixed on the bottom plate 22 of the fixed seat 2. By using the stop block 25 to be in a blocking fit with the bottom end of the collision column 4, the collision column 4 can be supported and limited. At the same time, the stop block 25 is used to increase the stability of the fixed seat 2 in supporting the collision column 4. In other embodiments, a jack can also be provided on the bottom plate 22 to be in a supporting and blocking fit with the collision column 4.

[0045] Preferably, the fixing seat 2 further comprises a movable sleeve 26 , which is detachably fixed to the fixing plate 24 , and is coaxially arranged with the assembly hole 31 , and is assembled on a side of the movable pressing block 3 away from the stopper 25 .

[0046] A movable sleeve 26 is provided on the fixed plate 24 on the side of the movable pressing block 3 away from the stopper 25. The movable sleeve 26 is coaxially arranged with the assembly hole 31, and has a guiding effect on the insertion of the collision column 4 into the assembly hole 31, ensuring that the collision column 4 is inserted into each movable pressing block 3. At the same time, the movable sleeve 26 can also limit the collision column 4 to reduce the movement of the collision column 4 during the test. In this embodiment, the movable sleeve 26 is detachably connected to the fixed plate 24 by bolts, which is convenient for removing the movable sleeve 26 when the collision column 4 needs to be replaced.

[0047] The utility model also provides a preferred embodiment of a battery pack collision test system, including a battery pack bottom scratch test obstacle, the specific structure of the battery pack bottom scratch test obstacle is the same as the specific structure of the battery pack bottom scratch test obstacle described in any of the above embodiments, and will not be repeated here.

[0048] In summary, the embodiments of the utility model provide a battery pack bottom scratch test obstacle and a battery pack collision test system, wherein a base plate is pre-buried in the ground foundation to protect the ground foundation, and a fixing seat can be assembled on the base plate to avoid damaging the ground during the test and improve the accuracy of the test result; the fixing seat and the base plate are detachably connected, and the installation is convenient; after the test, the fixing seat and test equipment such as the collision column can be disassembled without affecting the use of the ground foundation; a movable pressure block can be detachably assembled on the fixing seat, and the collision column is inserted into the assembly hole of the movable pressure block; after the test, when the collision column is bent and damaged, it is only necessary to remove the movable pressure block and replace the collision column; the fixing seat and the movable pressure block can be reused, thereby reducing the test cost.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack bottom scratch test obstacle, characterized in that: include: A base plate (1), the base plate (1) being used to be pre-buried in a ground foundation; A fixing seat (2), the fixing seat (2) being detachable and assembled on the base plate (1), the fixing seat (2) having an inclined surface (21); A movable pressing block (3), the movable pressing block (3) being detachable and assembled on the inclined surface (21), the movable pressing block (3) having an assembly hole (31), a plurality of movable pressing blocks (3) being arranged at intervals along the inclined direction of the inclined surface (21), and the assembly holes (31) of the movable pressing blocks (3) being arranged coaxially; A collision column (4), wherein the collision column (4) is inserted into the assembly hole (31), and the bottom end of the collision column (4) is supported and stopped by the fixing seat (2).

2. The battery pack bottom scratch test obstacle according to claim 1, characterized in that: It also comprises a pressing plate (5), which can be detachably assembled on the base plate (1), and a plurality of pressing plates (5) are assembled on the base plate (1), and each pressing plate (5) is tightly assembled with the fixing seat (2).

3. The battery pack bottom scratch test obstacle according to claim 2, characterized in that: The pressing plate (5) is an arched structure, and the pressing plate (5) presses the fixing seat (2) in a manner such that the back of the arch faces away from the base.

4. The battery pack bottom scratch test obstacle according to claim 3, characterized in that: The base plate (1) has a threaded hole (11), and a plurality of the threaded holes (11) are arranged in an array. The pressing plate (5) has a strip hole (51) extending along the length direction of the pressing plate (5). A fastening bolt (6) is connected between the pressing plate (5) and the threaded hole (11), and the fastening bolt (6) is inserted into the strip hole (51).

5. The battery pack bottom scratch test obstacle according to claim 4, characterized in that: The opening of the strip-shaped hole (51) is provided with a stepped platform (52), and the fastening bolt (6) is also provided with a sliding block (61), and the sliding block (61) is slidably assembled with the stepped platform (52).

6. The battery pack bottom scratch test obstacle according to any one of claims 1 to 5, characterized in that: It also comprises a baffle (7), wherein the baffle (7) is fixedly mounted on the base plate (1), and is mounted on a side of the fixing seat (2) away from the collision column (4), and the baffle (7) and the fixing seat (2) are blocked and assembled.

7. The battery pack bottom scratch test obstacle according to any one of claims 1 to 5, characterized in that: The fixing seat (2) comprises a bottom plate (22), a support plate (23) and a fixing plate (24); the bottom plate (22) is supported and arranged on the base plate (1); the support plate (23) is fixedly assembled on the bottom plate (22); the fixing plate (24) is obliquely supported on the bottom plate (22) and the support plate (23); the plate surface of the fixing plate (24) facing away from the bottom plate (22) forms the inclined surface (21); and the movable pressing block (3) is detachably fixed to the fixing plate (24).

8. The battery pack bottom scratch test obstacle according to claim 7, characterized in that: The fixing seat (2) further comprises a stopper (25), the stopper (25) being welded and fixed to the bottom plate (22), the stopper (25) being located at the bottom of the inclined surface (21), and the collision column (4) and the stopper (25) being assembled in a blocking manner.

9. The battery pack bottom scratch test obstacle according to claim 8, characterized in that: The fixing seat (2) further comprises a movable sleeve (26), wherein the movable sleeve (26) is detachably fixed to the fixing plate (24), the movable sleeve (26) is coaxially arranged with the assembly hole (31), and the movable sleeve (26) is assembled on a side of the movable pressing block (3) away from the stopper (25).

10. A battery pack collision test system, characterized in that: A battery pack bottom scratch test obstacle comprising the battery pack bottom scratch test obstacle as described in any one of claims 1 to 9.

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