New energy automobile battery pack comprehensive detection platform and detection method thereof

Abstract

The invention belongs to the field of new energy vehicles, and discloses a new energy vehicle battery pack comprehensive detection platform, which can be conveniently used for a spray test, an impact test and a needling test so as to improve the total efficiency of the three tests, and comprises a pair of support assemblies, a battery pack bearing plate and a collision bearing plate, the battery pack bearing plate is provided with an upper plate face bearing an automobile battery pack, the two ends of the battery pack bearing plate are coupled with the supporting assemblies respectively, the battery pack bearing plate is further provided with a side edge part, the collision bearing plate is provided with a collision bearing plane, the collision bearing plane is located near the side edge part, and the battery pack bearing plate is further provided with a water storage cavity and a plurality of spraying heads. Spraying fluid is contained in the water storage cavity, the spraying head is opened through the upper plate face and sprays upwards, the pricking needles and the testing trolley can move linearly, the pricking needles face the surface of the automobile battery pack, and the testing trolley and the collision bearing plate are symmetrically distributed relative to the battery pack bearing plate. The invention further discloses a comprehensive detection method of the new energy automobile battery pack based on the detection platform.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of new energy vehicles, and particularly relates to a new energy vehicle battery pack comprehensive detection platform and a detection method thereof. BACKGROUND

[0002] The new energy vehicle battery pack is a key component of a new energy vehicle, and before and after mass production, a plurality of tests such as spray tests, impact tests and needle tests need to be carried out to verify the reliability and safety of the battery pack in the use environment.

[0003] At present, in the battery pack manufacturing plant, the spray test is to spray the bottom of the battery pack or sink it into water; the impact test is to place the battery pack in front of the impact vertical surface, and the test trolley is used to impact the battery pack at different impulses and angles; the needle test is to set a movable needle near the battery pack, and the orientation of the needle is adjusted to perform the piercing action on the battery pack from different directions. The three tests are carried out in three environments, so the battery pack needs to be transported twice when different tests are carried out.

[0004] However, the above implementation has the following disadvantages: Since the impact test and the needle test need to adjust different needle or impact angles for testing, and after adjustment, additional constraints need to be made on the battery pack to maintain the stable positioning of the battery pack, that is, the pose of the driving trolley and the needle needs to be adjusted frequently to adapt to the test requirements of different angles, and the additional fixtures are used for auxiliary positioning, so the efficiency is not high. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a new energy vehicle battery pack comprehensive detection platform and a detection method thereof, which can be conveniently used for spray tests, impact tests and needle tests, thereby improving the overall efficiency of the above three tests.

[0006] To achieve the above object, the present application provides the following technical solutions: The utility model provides a new energy automobile battery package comprehensive detection platform, bears new energy automobile battery package, and the detection platform's near sets up the needle and test trolley, its characterized in be including: a pair of support assembly, interval setting along the predetermined straight line direction, battery package bearing plate has the upper plate surface with the bearing automobile battery package, battery package bearing plate extends along the predetermined straight line direction, and both ends are coupled with support assembly, battery package bearing plate still has the side edge part, and both ends of battery package bearing plate form the continuous edge through the side edge part transition, the crash plate has the crash plane with the predetermined straight line direction parallel, and the crash plane is located in the near side of side edge part, and the crash direction is perpendicular with the predetermined straight line direction and extends horizontally, wherein, battery package bearing plate still has the water storage cavity and a plurality of shower nozzles, and the water storage cavity contains the spray fluid, and the shower nozzle is open through the upper plate surface and sprays upwards, and the needle and test trolley can move in straight line, and the needle is towards the surface of automobile battery package, and the test trolley is symmetrically distributed with the crash plate about battery package bearing plate.

[0007] Preferably, the support assembly comprises a vertically extending telescopic sleeve and a hydraulic cylinder, a fixed end of the hydraulic cylinder is arranged on a fixed end of the telescopic sleeve, and a movable end of the hydraulic cylinder is arranged on a movable end of the telescopic sleeve, so that the telescopic sleeve is telescopic in the vertical direction. Further, the support assembly further comprises a vertically extending middle support, a top end of the middle support is rotatably provided with a spherical coupling, and the spherical head support is detachably connected with a middle part of the battery package bearing plate. When the pair of support assemblies are asynchronously telescopic through the telescopic sleeves, the battery package bearing plate is driven to overturn in a first vertical plane.

[0008] Further, the utility model further comprises a pair of cylinder assemblies, the support assembly is coupled with the battery package bearing plate through the cylinder assemblies, and the cylinder assembly comprises a finger cylinder. A pair of output clamping fingers of the finger cylinder are provided with a bottom supporting plate and a pressing cylinder. The bottom supporting plate is fixedly arranged on a bottom surface of the output clamping finger, and the pair of bottom supporting plates of the finger cylinder extend towards each other. The output direction of the pressing cylinder is a vertical direction. The output end of the pressing cylinder is provided with a pressing plate, and the pair of pressing plates of the finger cylinder extend towards each other. Still further, the support assembly further comprises a rotary motor, a coupling gear pair, and a fixing frame. The rotary motor is arranged on the movable end of the telescopic sleeve, and an output shaft of the rotary motor extends along the predetermined straight line direction. The fixing frame is connected with a cylinder body of the finger cylinder. The input side of the coupling gear pair is arranged on the output shaft of the rotary motor, and the output side is arranged on the fixing frame. When the rotary motor rotates, the cylinder assembly overturns in a second vertical plane.

[0009] Further, the utility model further comprises a platform moving guide rail extending along the predetermined straight line direction. The bottom of the fixed end of the telescopic sleeve is matched with the platform moving guide rail, and is movable along the predetermined straight line direction.

[0010] Preferably, the impact plate comprises a base, a driving hydraulic cylinder, and a plate body, the driving hydraulic cylinder is arranged on the base, an output end of the driving hydraulic cylinder extends in the impact direction, the plate body is movably arranged on the base in the impact direction, and the output end of the driving hydraulic cylinder is connected with a bottom of the plate body.

[0011] Further, the impact plate further comprises an on-plate hydraulic cylinder, a lifting body, a driving gear, and a following-up turning plate, a surface of the plate body facing the battery pack bearing plate is regarded as a main body front surface, the main body front surface is formed with a driving turning rack extending vertically upward, the on-plate hydraulic cylinder is fixedly arranged on the main body front surface and has a vertically upward output end, the lifting body is fixedly arranged on the output end, the driving gear is in meshing cooperation with the driving turning rack, and the driving gear is rotatably arranged on the lifting body through a following-up rotating shaft, the following-up turning plate is fixedly arranged on the following-up rotating shaft, and an impact plane is formed on the following-up turning plate.

[0012] Preferably, the upper plate surface is further provided with a plurality of lifting pads, and the plurality of lifting pads are used to lift the automobile battery pack relative to the upper plate surface.

[0013] A new energy automobile battery pack comprehensive detection method using the detection platform, characterized in that it comprises the following steps: Step S1: horizontally arranging the battery pack bearing plate, and horizontally placing the new energy automobile battery pack on the upper plate surface; Step S2: spraying water on the bottom surface of the new energy automobile battery pack through the spray head to perform a spray test; Step S3: performing a needle puncture test on the new energy automobile battery pack, comprising the following sub-steps: Step S3-1: tightly positioning the new energy automobile battery pack on the battery pack bearing plate through the cylinder assembly; Step S3-2: making the tip of the needle puncture towards the surface of the new energy automobile battery pack, and making the needle puncture have only a linear movement degree, so as to puncture the new energy automobile battery pack; Step S3-3: turning the battery pack bearing plate in the first vertical plane to make the new energy automobile battery pack have at least two different inclined poses, and making the needle puncture the new energy automobile battery pack; Step S4: performing an impact test on the new energy automobile battery pack, comprising the following sub-steps: Step S4-1: horizontally arranging the battery pack bearing plate, and tightly positioning the new energy automobile battery pack on the upper plate surface through the cylinder assembly; Step S4-2: making the impact plane cooperatively arranged on the surface of the new energy automobile battery pack, and making the test trolley move and impact the new energy automobile battery pack from an impact initial position; Step S4-3: by turning the battery pack bearing plate in the second vertical plane so that the new energy automobile battery pack is at least in one inclined position, the test trolley is returned to the initial position corresponding to each inclined position, and the impact surface is adjusted to match the surface of the new energy automobile battery pack, and the new energy automobile battery pack is subjected to moving impact. Step S5: based on the conclusions of the above three tests, the quality of the new energy automobile battery pack is determined. Compared with the prior art, the beneficial effects of the present application are: 1. Because the new energy automobile battery pack comprehensive detection platform of the present application includes a pair of support assemblies, a battery pack bearing plate and an impact plate, the battery pack bearing plate has an upper plate surface bearing the automobile battery pack, the two ends of the battery pack bearing plate are coupled with the support assemblies, the battery pack bearing plate also has a side edge portion, the impact plate has an impact surface, the impact surface is located near the side edge portion, the battery pack bearing plate also has a water storage cavity and a plurality of spray heads, the spray heads are open through the upper plate surface and spray upward, the needle and the test trolley can move linearly, the needle is directed toward the surface of the automobile battery pack, and the test trolley and the impact plate are symmetrically distributed about the battery pack bearing plate, therefore, the present application completes the spray test of the battery pack through the spray heads, the upper plate surface is used as the battery pack impact surface for the needle penetration test and the impact test, and the impact plate cooperates with the upper plate surface to complete the impact test of the battery pack, so that the present application can be conveniently used for spray test, impact test and needle penetration test, thereby changing the test type, adjusting the related positions when changing the needle penetration or impact angle, and re-constraining or additionally constraining the new energy automobile battery pack, thereby improving the overall efficiency of the above three tests.

[0014] 2. Because the support assembly of the present application further includes a vertically extending middle support, the top end of the middle support is rollably provided with a spherical coupling, and the spherical head support is detachably connected with the middle part of the battery pack bearing plate, when a pair of support assemblies are asynchronously telescoped through the telescopic sleeves, the battery pack bearing plate is driven to turn over, i.e. the battery pack bearing plate and the spherical head support form a structure similar to a seesaw, therefore, the present application can drive the battery pack to turn over by asynchronous telescoping of the telescopic sleeves, i.e. without adjusting the position of the driving trolley and the needle, the adjustment of different needle penetration angles or impact angles of the battery pack can be realized.

[0015] 3. Because the air cylinder assembly of the application comprises a finger air cylinder, the pair of output clamping fingers of the finger air cylinder are provided with bottom supporting plates and pressing cylinders, the bottom supporting plates are fixedly arranged on the bottom surface of the output clamping fingers, and the pair of bottom supporting plates of the finger air cylinder extend towards each other, the output direction of the pressing cylinder is vertical, the output end of the pressing cylinder is provided with a pressing plate, and the pair of pressing plates of the finger air cylinder extend towards each other, that is, through the cooperation of the pressing plate and the bottom supporting plate, a variety of different height battery packs can be clamped, and on this basis, through the pair of output clamping fingers, a variety of different width battery packs can be clamped, therefore, the application is suitable for a variety of different size specifications of automobile battery packs.

[0016] 4. Because the support assembly of the application further comprises a rotary motor, a coupling gear pair and a fixed frame, the rotary motor is arranged on the movable end of the telescopic sleeve, and the output shaft of the rotary motor extends along a predetermined straight line direction, the fixed frame is connected with the cylinder body of the finger air cylinder, the input side of the coupling gear pair is arranged on the output shaft of the rotary motor, and the output side is arranged on the fixed frame, so that when the rotary motor rotates, the air cylinder assembly is turned over, therefore, under the premise that the former telescopic sleeve does not synchronously stretch and retract, the application provides an additional dimension of turning freedom for the battery pack, so that the application can adjust the different needle puncture angle or impact angle of the battery pack in two dimensions without adjusting the position of the driving trolley and the needle.

[0017] 5. Because the impact plate of the application comprises a base, a driving hydraulic cylinder and a plate body, the driving hydraulic cylinder is arranged on the base, and the plate body is movably arranged on the base, and the output end of the driving cylinder is connected with the plate body, therefore, when the battery pack bearing plate is turned over as described above, the driving of the driving cylinder can make the impact plane always close to the side part.

[0018] 6. Because the impact plate of the application further comprises an on-plate hydraulic cylinder, a lifting entity, a turning gear and a follow-up turning plate, the front surface of the main body is formed with a vertical upward extending turning gear rack, the on-plate hydraulic cylinder is fixedly arranged on the front surface of the main body and has a vertical upward output end, the lifting entity is fixedly arranged on the output end, the turning gear is engaged with the turning gear rack, and the turning gear is rotatably arranged on the lifting entity through a follow-up rotating shaft, the follow-up turning plate is fixedly arranged on the follow-up rotating shaft, and the follow-up turning plate is formed with an impact plane, when the on-plate hydraulic cylinder drives the lifting entity to lift, the turning gear rack moves relative to the turning gear, so that the turning gear rotates and drives the follow-up turning plate to swing while lifting, therefore, the application lifts and pitches at the same time through the follow-up turning plate, so that when the battery pack bearing plate drives the new energy automobile battery pack to turn over in the second vertical plane, the impact plane can always cooperate with the corresponding side surface of the new energy automobile battery pack.

[0019] 7. Because the upper plate of the present invention is also provided with a plurality of lifting pads, which are used to lift the car battery pack relative to the upper plate, there is a gap between the spray head of the present invention and the bottom surface of the battery pack, thereby enabling the battery pack to obtain a better spraying effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the acupuncture device according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the impact test implementation of the comprehensive testing platform for new energy vehicle battery packs according to an embodiment of the present invention (the raised pad is shown in the figure).

[0022] Figure 3 This is a schematic diagram of the needle penetration test of the comprehensive testing platform for new energy vehicle battery packs according to an embodiment of the present invention (the raised pad is shown in the figure).

[0023] Figure 4 This is a schematic diagram of a comprehensive testing platform for new energy vehicle battery packs according to an embodiment of the present invention. Figure 1 (Slightly draw the raised pad).

[0024] Figure 5 This is a schematic diagram of a comprehensive testing platform for new energy vehicle battery packs according to an embodiment of the present invention. Figure 2 (Slightly draw the raised pad).

[0025] Figure 6 This is a schematic diagram of the assembly of the support component and the cylinder component according to an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the cooperation between the central support member and the battery pack carrier plate in an embodiment of the present invention (the lifting pad is omitted).

[0027] Figure 8 This is a top view of the battery pack carrier plate according to an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the impact plate according to an embodiment of the present invention.

[0029] Figure 10 for Figure 9 A partial schematic diagram of part A (simplified drawing of the moving flap).

[0030] Figure 11 This is a schematic diagram of two types of impact beams, lifting entities, and follow-up flaps according to embodiments of the present invention.

[0031] Figure 12 This is a schematic diagram illustrating the steps of a comprehensive testing method for new energy vehicle battery packs according to an embodiment of the present invention.

[0032] In the diagram: 100. Comprehensive testing platform for new energy vehicle battery packs; P. Needle-piercing device; C. Test trolley; C1. Drive cable; C2. Trolley track; P1. Needle; D1. Predetermined straight direction; D2. Impact direction; S1. First vertical plane; S2. Second vertical plane; 10. Platform moving guide rail; 20. Support assembly; 21. Telescopic sleeve; 22. Hydraulic cylinder; 23. Middle support component; 231. Support base; 232. End ball seat; 23a. Lubricating oil channel; 233. Spherical coupling component; 24. Rotary motor; 25. Reducer; 26. Coupling gear pair; 27. Fixing frame; 30. Cylinder assembly; 31. Finger cylinder; 31a. Output finger clamp; 32. Bottom support plate; 3 3. Pressing cylinder; 331. Pressing plate; 40. Battery pack support plate; 40a. Upper plate surface; 40b. Side edge; 40d. Spray head; 41. Lifting pad; 50. Impact plate; 51. Base; 52. Drive cylinder; 53. Plate body; 53a. Front of the body; 53b. Drive rack; 53c. Load-bearing guide groove; 53d. Force transmission sliding support; 54. On-plate cylinder; 55. Lifting entity; 55a. Impact beam; 55b. First impact head; 55c. Second impact head; 56. Drive gear; 57. Follow-up flip plate; 57a. Impact plane; S100. Comprehensive testing method for new energy vehicle battery packs. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate a comprehensive testing platform for new energy vehicle battery packs and its testing method. It should be noted that the descriptions of these embodiments are for the purpose of helping to understand the present invention, but do not constitute a limitation of the present invention.

[0034] like Figures 1 to 3 As shown, the comprehensive testing platform for new energy vehicle battery packs in this embodiment carries a new energy vehicle battery pack (not shown in the attached figure). A needle P1 and a test trolley C are arranged near the testing platform. Both the needle P1 and the test trolley C can move linearly. The needle P1 faces the surface of the battery pack. The test trolley and the impact plate are symmetrically distributed about the battery pack support plate. The needle P1 is used to perform a needle penetration test on the new energy vehicle battery pack, and the test trolley C is used to perform an impact test on the new energy vehicle battery pack. Specifically, the needle P1 is mounted on a needle penetration device P, and the needle P1 has a linear degree of freedom. The needle penetration device P is a robotic arm that can adjust the degree of freedom of movement of the needle P1 in three-dimensional space. The test trolley C is mounted on a preset trolley track C2, and the test trolley C gains kinetic energy through a traction drive cable C1. like Figure 2 and Figure 3As shown, the comprehensive testing platform for new energy vehicle battery packs includes a platform moving guide rail 10, a support component 20, a cylinder component 30, a battery pack support plate 40, and a collision plate 50.

[0035] The platform moving guide rail 10 extends along a predetermined straight line direction D1. The horizontal direction perpendicular to the predetermined straight line direction D1 is taken as the impact direction D2. The vertical plane perpendicular to the impact direction D2 is taken as the first vertical plane S1. The vertical plane perpendicular to the predetermined straight line direction D1 is taken as the second vertical plane S2. Specifically, the impact direction D2 is the direction in which the test trolley C moves.

[0036] like Figure 4 As shown, the number of support components 20 is one pair, which are spaced apart along a predetermined straight direction D1.

[0037] The support assembly 20 includes a telescopic sleeve 21, a hydraulic cylinder 22, a central support member 23, a rotary motor 24, a reducer 25, a coupling gear pair 26, and a fixing frame 27.

[0038] The telescopic sleeve 21 extends vertically, with its fixed end located on the bottom side and movably engaged with the platform moving guide rail 10, thereby allowing it to move along a predetermined straight direction D1.

[0039] The fixed end of the hydraulic cylinder 22 is set on the fixed end of the telescopic sleeve 21, and the movable end of the hydraulic cylinder 22 is set on the movable end of the telescopic sleeve 21, so that the telescopic sleeve 21 can extend and retract in the vertical direction by the drive of the hydraulic cylinder 22.

[0040] like Figure 5 As shown, the middle support member 23 extends vertically and has a support base 231 from bottom to top, an end ball seat 232 and a spherical coupling member 233. Specifically, the middle support member 23 is located between a pair of telescopic sleeves 21 and corresponds along a predetermined straight direction D1. The support base 231 does not interfere with the platform moving guide rail 10.

[0041] The spherical coupling member 233 is rotatably disposed at the top of the middle support member 23. Specifically, the support base 231 and the end ball seat 232 are integrally continuous. The ball head support member 23 is spherical and is embedded at the top of the end ball seat 232. A small part of the ball of the ball head support member 23 is exposed to the outside. In this embodiment, the end ball seat 232 has a ball groove (not shown in the figure) that corresponds to most of the ball of the ball head support member 23. The ball groove has a lubricating oil channel 23a that communicates with the outside, so that a lubricating oil film is formed between the inner wall of the ball groove and the ball head support member 23.

[0042] like Figure 6As shown, the rotary motor 24 is located at the movable end of the telescopic sleeve 21, and the output shaft of the rotary motor 24 is equipped with a reducer 25. The output shaft formed by the rotary motor 24 through the reducer 25 extends along a predetermined straight direction D1.

[0043] The input side of the coupling gear pair 25 is set on the output shaft formed by the rotary motor 24 through the reducer 25, and the output side is set on the fixed frame 27. The fixed frame 27 is connected to the cylinder assembly 30, so that when the rotary motor 24 rotates, the cylinder assembly 30 is rotated in the second vertical plane S2 due to the deceleration of the reducer 25.

[0044] There is a pair of cylinder assemblies 30, which are respectively connected to two fixing brackets 27. The cylinder assembly 30 includes a finger cylinder 31, a bottom support plate 32 and a clamping cylinder 33.

[0045] The bottom support plate 32 and the clamping cylinder 33 are each in pairs, and are respectively set on a pair of output finger clamps 31a of the finger cylinder 31.

[0046] The bottom support plate 32 is fixed to the bottom surface of the output finger clamp 31a, and the pair of bottom support plates 32 of the finger cylinder 31 extend towards each other. The output direction of the clamping cylinder 33 is vertical, and the output end of the clamping cylinder 33 is provided with a clamping plate 331. The pair of clamping plates 331 of the finger cylinder 31 extend towards each other. Specifically, the pair of bottom support plates 32 correspond along the impact direction D2, and there is a predetermined gap between them. When the finger cylinder 31 is activated, the pair of bottom support plates 32 move towards each other or towards each other along the impact direction D2. The two pressure plates 331 are aligned along the impact direction D2 and have a predetermined gap between them. That is, the two pressure plates 331 move towards or away from each other along the impact direction D2 through linkage with the bottom support plate 32. The two pressure plates 331 and the two bottom support plates 32 are aligned vertically and parallel to each other. When the pressure cylinder 33 is activated, the pressure plates 331 rise or fall relative to the bottom support plate 32, so that the pressure plates 331 and the bottom support plate 32 move towards or away from each other along the vertical direction.

[0047] like Figure 7 and Figure 8As shown, the battery pack support plate 40 is used to support the battery pack. The battery pack support plate 40 extends along a predetermined straight direction D1, and its two ends are coupled to the telescopic sleeves 21 of a pair of support components 20 through cylinder assembly 30. The ball head support 23 is detachably connected to the middle of the battery pack support plate 40. When the pair of support components 20 extend and retract asynchronously through the telescopic sleeves 21, the battery pack support plate 40 is driven to flip in the first vertical plane S1. Specifically, the bottom surface of the battery pack support plate 40 and the upper surface of the battery pack supported thereon are pressed together in the vertical direction by the mutual approach of the bottom support plate 32 and the pressing plate 331. The relative surfaces of the battery pack supported thereon in the impact direction D2 are pressed together in the impact direction D2 by the mutual approach of the output clamping fingers 31a.

[0048] The battery pack support plate 40 has an upper plate surface 40a, a side portion 40b, a water storage cavity (not shown in the attached drawings), a spray head 40d, and a lifting pad 41.

[0049] The upper plate 40a supports the car battery pack. The two ends of the battery pack support plate 40 along the predetermined straight direction D1 are transitioned to form continuous edges through the side portions 40b. Specifically, the battery pack support plate 40 is rectangular, with the length direction being the predetermined straight direction D1, and the side portions 40b being the edges corresponding to the long side.

[0050] A water storage chamber is formed inside the battery pack support plate 40. The water storage chamber contains spray fluid. Specifically, the water storage chamber introduces spray fluid from the outside through an open channel (not shown in the attached figure).

[0051] The spray head 40d is open through the upper plate surface 40a and sprays upwards. Specifically, the water storage chamber sprays water outwards through the spray head 40d, and there are multiple spray heads 40d, which are distributed in a matrix on the upper plate surface 40a.

[0052] The upper plate 40a is also provided with a plurality of lifting pads 41. The plurality of lifting pads 41 are used to lift the car battery pack relative to the upper plate 40a. Specifically, the lifting pads 41 raise the battery pack relative to the upper plate 40a, so that the bottom surface of the battery pack is at a predetermined distance from the nozzle of the spray head 40d. The spray head 40d completes the spray test by spraying the spray fluid onto the bottom surface of the battery pack.

[0053] like Figure 9 As shown, the impact plate 50 includes a base 51, a driving hydraulic cylinder 52, a plate body 53, a hydraulic cylinder on the plate 54, a lifting entity 55, a driving gear 56, and a follow-up flip plate 57.

[0054] Both the driving cylinder 52 and the plate body are mounted on the upper surface of the base 51. The output end of the driving cylinder 52 extends along the impact direction D2 and is connected to the bottom of the plate body 53. Thus, the plate body 53 is movably mounted on the base 51 along the impact direction D2 by the driving of the driving cylinder 52.

[0055] The surface of the main body 53 facing the side portion 40b of the battery pack support plate 40 is designated as the main body front 53a, and the main body front 53a has a flip rack 53b, a load-bearing guide groove 53c, and a force-transmitting sliding support 53d.

[0056] Both the overturning rack 53b and the load-bearing guide groove 53c extend vertically upwards. The force-transmitting sliding brace 53d is movably disposed inside the load-bearing guide groove 53c. Specifically, there is a pair of overturning racks 53b and load-bearing guide grooves 53c. In this embodiment, a rack frame (not shown in the figure) is formed on the front side 53a of the main body along the impact direction towards the side 40b. A portion of the rack frame forms overturning racks 53b facing the front side 53a of the main body. On the predetermined straight direction D1, a pair of overturning racks 53b are located on opposite sides of a pair of load-bearing guide grooves 53c.

[0057] The hydraulic cylinder 54 on the plate is fixed to the front side 53a of the main body and has a vertically upward output end. The lifting entity 55 is fixed to the output end of the hydraulic cylinder 54 on the plate. Specifically, the lifting entity 55 is fixed to the force transmission slide 53d, so that when the lifting entity 55 moves up and down, the lifting entity 55 moves up and down relative to the front side 53a of the main body through the force transmission slide 53d. When the lifting entity 55 receives an impact in the impact direction D, the impact is transmitted to the plate body 53 through the lifting entity 55. In this embodiment, the lifting entity 55 is a rectangular plate extending along a predetermined straight line direction D1.

[0058] like Figure 10 As shown, the drive gear 56 meshes with the drive rack 53b, and the drive gear 56 is rotatably mounted on the lifting entity 55 via a follower shaft (not shown in the figure). Specifically, the follower shaft and the drive gear 56 correspond to each other, and there is a pair of each. The pair of follower shafts are rotatably mounted at both ends of the lifting entity 55 via bearings, and the extension axis of the follower shaft is parallel to the predetermined straight line direction D1.

[0059] The follower flap 57 is fixed on the follower rotating shaft, and a collision-bearing plane 57a is formed on the follower flap 57. The collision-bearing plane 57a is parallel to the predetermined straight line direction D1 and perpendicular to the collision-bearing direction D2. The collision-bearing plane 57a is located near the side portion 40b in the collision-bearing direction D2. Specifically, there is a predetermined interval distance between the lifting entity 55 and the follower flap 57. The follower flap 57 is closer to the battery pack support plate 40 than the lifting entity 55. The side of the drive gear 56 near the follower flap 57 meshes with the drive rack 53b. When the lifting entity 55 rises, the drive gear 57 is connected to the battery pack support plate 40. The follower rotating shaft drives the follower flap 57 to rise, while the drive gear 56 rotates counterclockwise by meshing with the drive rack 53b, causing the follower flap 57 to flip counterclockwise. When the lifting entity 55 descends, the follower rotating shaft drives the follower flap 57 to descend, while the drive gear 56 rotates clockwise by meshing with the drive rack 53b, causing the follower flap 57 to flip clockwise. In other words, the lifting entity 55, through the hydraulic cylinder 54 on the plate, the drive gear 56, and the drive rack 53b, can drive the follower flap 57 to perform a compound action of moving and flipping.

[0060] Specifically, such as Figure 11 As shown, along the impact direction D2, an impact beam 55a is provided between the follower flap 57 and the lifting entity 55. The impact beam 55a has a first impact head 55b and a second impact head 55c. The first impact head 55b is fixedly connected to the follower flap 57 and fits against the surface. The second impact head 55c is fixedly connected to the lifting entity 55 and fits against the surface. When the new energy vehicle battery pack comprehensive testing platform 100 is implemented, there are two impact situations for the impact beam 55a: one is "horizontal impact" and the other is "tilted impact", corresponding to two different shapes of impact beams 55a.

[0061] like Figure 12 As shown, the comprehensive testing method S100 for new energy vehicle battery packs using the aforementioned testing platform 100 includes the following steps: Step S1: Horizontally position the battery pack support plate 40 and place the new energy vehicle battery pack horizontally on the upper plate surface 40a.

[0062] Specifically, the new energy vehicle battery pack is rectangular. When placed horizontally, its length direction is in the same direction as the predetermined straight line direction D1, and its width direction is in the same direction as the impact direction D2. At this time, the two telescopic sleeves 21 are at the same height. The new energy vehicle battery pack is raised by the lifting pad 41, thereby forming a vertical gap with the spray head 40d.

[0063] Step S2: Spray water onto the bottom surface of the new energy vehicle battery pack through the spray nozzle 40d to conduct a spray test.

[0064] Specifically, the total spray flow rate of each spray head for 40 days is between 1.0L / min and 1.5L / min. The spray is continuously directed towards the bottom of the new energy vehicle battery pack for 30 to 60 minutes. After the spraying is completed, the spray test is completed. The new energy vehicle battery pack is left to stand horizontally until the visible water on the surface disappears. Then, the appearance of the new energy vehicle battery pack and the sealing interface on the surface are inspected. The criteria for judging whether the spray test of the new energy vehicle battery pack is qualified are whether there are continuous water marks or water accumulation inside, whether there are corrosion marks on each electrical component, and whether the insulation resistance and open circuit voltage of the new energy vehicle battery pack are within the preset range.

[0065] Step S3: Conduct a nail penetration test on the new energy vehicle battery pack, including the following sub-steps: Step S3-1: Press and position the new energy vehicle battery pack on the battery pack support plate 40 using the cylinder assembly 30.

[0066] Specifically, after the spray test, the two ends of a new energy vehicle battery pack are clamped and positioned again using the cylinder assembly 30.

[0067] Step S3-2: Make the tip of the piercing needle P1 face the surface of the new energy vehicle battery pack, and make the piercing needle P1 only have the freedom of linear movement, so that the piercing needle P1 can penetrate the new energy vehicle battery pack.

[0068] Specifically, the top surface and at least one side surface of the new energy vehicle battery pack are selected as the puncture surface. Then, the needle P1 is moved so that its tip is perpendicular to the puncture surface. One to two predetermined positions are selected on each puncture surface, and the needle P1 is moved in a straight line to puncture each puncture position vertically.

[0069] Step S3-3: By flipping the battery pack support plate 40 in the first vertical plane S1, the new energy vehicle battery pack is in at least two different tilt positions, and the piercing needle P1 is inserted into the new energy vehicle battery pack.

[0070] Specifically, by moving a pair of telescopic sleeves 21 asynchronously, the new energy vehicle battery pack is rotated clockwise and counterclockwise in the first vertical plane S1, thereby obtaining two symmetrical tilted positions of the new energy vehicle battery pack. The top surface and at least one side surface of the new energy vehicle battery pack are selected as the needle piercing surface. Then, the needle P1 is moved to the tip tilted towards the needle piercing surface. One to two predetermined positions are selected on each needle piercing surface. The needle P1 is moved in a straight line and tilted to pierce each needle piercing position.

[0071] Specifically, the needle penetration speed in the needle penetration test is 25 mm / s to 40 mm / s, penetrating the new energy vehicle battery pack to a predetermined depth, and then holding the needle in the P1 position for 10 seconds before withdrawing it. In steps S3-2 and S3-3, the three test positions of the new energy vehicle battery pack in the needle penetration test correspond to three different new energy vehicle battery packs. That is, in the needle penetration test, a new new energy vehicle battery pack needs to be replaced each time the test position of the new energy vehicle battery pack changes.

[0072] Specifically, the needle puncture test is completed after all the needle puncture actions are completed. If the new energy vehicle battery pack does not produce open flame, explosion, projectile fragments, smoke, flame, or gas or electrolyte leakage during the needle puncture test and within one hour after its completion, the new energy vehicle battery pack is deemed to have passed the needle puncture test.

[0073] Step S4: Conduct a crash test on the new energy vehicle battery pack, including the following sub-steps: Step S4-1: Make the battery pack support plate 40 horizontal, and use the cylinder assembly 30 to horizontally press and position the new energy vehicle battery pack on the upper plate surface 40a.

[0074] Specifically, after the needle penetration test, by adjusting the two telescopic sleeves 21 to the same height, the battery pack support plate 40 is made horizontal, and the two ends of a new energy vehicle battery pack are clamped and positioned again by the cylinder assembly 30. The corresponding horizontal impact beam 55a is installed between the follow-up flip plate 57 and the lifting entity 55.

[0075] Step S4-2: Make the impact-bearing plane 57a fit and attach to the surface of the new energy vehicle battery pack, so that the test car C moves and impacts the new energy vehicle battery pack from the initial impact position.

[0076] Specifically, the main body 53 of the plate is moved toward the side 40b by the driving hydraulic cylinder 52 until the impact plane 57a is in contact with one side surface of the new energy vehicle battery pack. At this time, the impact direction D2 is perpendicular to the impact plane 57a. Then, the test trolley C is driven on the trolley track C2 by the driving cable C1 to impact the surface of the new energy vehicle battery pack along the impact direction D2. The impact force is applied to the new energy vehicle battery pack and transmitted to the main body 53 of the plate through the follow-up flip plate 57, the impact beam 55a, the lifting entity 55 and the force transmission sliding support 53d.

[0077] Step S4-3: By flipping the battery pack support plate 40 in the second vertical plane S2, the new energy vehicle battery pack is in at least one tilted position. For each tilted position, the test car C is returned to the initial impact position. The impact plane 57a is adjusted to fit and conform to the surface of the new energy vehicle battery pack, and the new energy vehicle battery pack is moved and impacted.

[0078] Specifically, the impact beam 55a corresponding to the horizontal impact is disassembled and removed from between the follow-up flap 57 and the lifting entity 55.

[0079] Specifically, the synchronous rotation of a pair of rotary motors 24 enables the new energy vehicle battery pack to rotate clockwise and counterclockwise in the second vertical plane S2, thereby obtaining two symmetrical tilt positions of the new energy vehicle battery pack.

[0080] Specifically, the new energy vehicle battery pack is rotated clockwise to a predetermined first rotation angle in the second vertical plane S2. At this time, the driving gear 56 rotates clockwise, causing the lifting entity 55 to descend and the follower flap 57 to descend and rotate clockwise to the first rotation angle. Then, the corresponding inclined impact beam 55a is reinstalled between the follower flap 57 and the lifting entity 55. Then, the test trolley C is driven on the trolley track C2 by the driving cable C1 to vertically impact the surface of the new energy vehicle battery pack along the impact direction D2. The impact force is applied to the new energy vehicle battery pack and transmitted to the plate body 53 through the follower flap 57, the impact beam 55a, the lifting entity 55, and the force transmission slide 53d.

[0081] Specifically, after the aforementioned impact is completed, the impact beam 55a corresponding to the tilted impact is disassembled and pulled out from between the follow-up flap 57 and the lifting entity 55.

[0082] Specifically, the new energy vehicle battery pack is rotated counterclockwise in the second vertical plane S2 to a second rotation angle symmetrical to the first rotation angle. At this time, the driving gear 56 rotates counterclockwise, thereby raising the lifting entity 55 and the follower flap 57, which then rises and rotates counterclockwise to the second rotation angle. Next, the impact beam 55a corresponding to the inclined impact is completely rotated and reinstalled between the follower flap 57 and the lifting entity 55. Then, the test trolley C is driven by the driving cable C1 on the trolley track C2 to vertically impact the surface of the new energy vehicle battery pack along the impact direction D2. The impact force is applied to the new energy vehicle battery pack and transmitted to the plate body 53 through the follower flap 57, the impact beam 55a, the lifting entity 55, and the force transmission sliding support 53d.

[0083] Specifically, the test vehicle C impacts the new energy vehicle battery pack at a predetermined impact speed (10km / h to 20km / h). In steps S4-2 and S4-3, the three test postures of the new energy vehicle battery pack in the impact test correspond to three different new energy vehicle battery packs. That is, in the impact test, a new new energy vehicle battery pack needs to be replaced every time the test posture of the new energy vehicle battery pack changes. Specifically, after all impact actions are completed, the impact test is completed. The kinetic energy of each impact and the amount of deformation on the surface of the new energy vehicle battery pack are recorded. If, within one hour after the impact test and the end of the test, the new energy vehicle battery pack does not produce open flames, explosions, large-area displacement or crushing of internal cells, no through cracks or sharp angles penetrating the internal cells, and the electrical and insulation performance meets the preset standards, then the new energy vehicle battery pack is deemed to have passed the impact test.

[0084] Step S5: Based on the conclusions of the above three tests, determine the quality of the new energy vehicle battery pack.

[0085] Specifically, if the spray, needle penetration, and impact tests are all deemed qualified, the new energy vehicle battery pack is deemed "comprehensively qualified"; if any one of the tests is deemed unqualified, the new energy vehicle battery pack is deemed "comprehensively unqualified". Based on the unqualified test items, the failure mode of the new energy vehicle battery pack is defined as "sealing failure", "mechanical strength failure" or "thermal safety failure", etc., to guide the subsequent improvement of the structure and / or process of the new energy vehicle battery pack. The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A comprehensive testing platform for new energy vehicle battery packs, comprising a new energy vehicle battery pack, wherein a needle and a testing trolley are arranged nearby, characterized in that, include: A pair of support components are spaced apart along a predetermined straight line. A battery pack support plate has an upper surface for supporting an automotive battery pack. The battery pack support plate extends along a predetermined straight line and is coupled to a support assembly at both ends. The battery pack support plate also has side portions, and the two ends of the battery pack support plate transition into continuous edges through the side portions. The impact-bearing plate has an impact-bearing plane parallel to the predetermined straight line direction, the impact-bearing plane being located near the side portion, and the impact-bearing direction being perpendicular to and extending horizontally with respect to the predetermined straight line direction. The battery pack support plate also includes a water storage chamber and multiple spray nozzles. The water storage chamber contains spray fluid, and the spray nozzles are open through the upper plate surface and spray upwards. Both the needle and the test vehicle can move linearly. The needle is directed toward the surface of the car battery pack. The test vehicle and the impact plate are symmetrically distributed about the battery pack support plate.

2. The comprehensive testing platform for new energy vehicle battery packs according to claim 1, characterized in that: in, The support assembly includes a vertically extending telescopic sleeve and a hydraulic cylinder. The fixed end of the hydraulic cylinder is located on the fixed end of the telescopic sleeve, and the movable end of the hydraulic cylinder is located on the movable end of the telescopic sleeve, so that the telescopic sleeve can extend and retract in the vertical direction.

3. The comprehensive testing platform for new energy vehicle battery packs according to claim 2, characterized in that: in, The support assembly also includes a vertically extending central support member, the top of which is rotatably provided with a spherical coupling member. This spherical support member is detachably connected to the center of the battery pack carrier plate. When the pair of support components extend and retract asynchronously through the telescopic sleeve, the battery pack carrier plate is driven to flip in the first vertical plane.

4. The comprehensive testing platform for new energy vehicle battery packs according to claim 3, characterized in that, Also includes: A pair of cylinder assemblies are provided, with the support assembly correspondingly coupled to the battery pack carrier plate via the cylinder assemblies. Each cylinder assembly includes a finger cylinder, and each of the two output finger grippers of the finger cylinder is provided with a bottom support plate and a clamping cylinder. The bottom support plate is fixed on the bottom surface of the output finger clamp, and the pair of bottom support plates of the finger cylinder extend towards each other. The output direction of the pressing cylinder is vertical, and the output end of the pressing cylinder is provided with a pressing plate, and the pair of pressing plates of the finger cylinder extend towards each other.

5. The comprehensive testing platform for new energy vehicle battery packs according to claim 4, characterized in that: in, The support assembly also includes a rotary motor, a coupling gear pair, and a fixing frame. The rotary motor is located at the movable end of the telescopic sleeve, and the output shaft of the rotary motor extends along the predetermined straight line direction. The fixed frame is connected to the cylinder body of the finger cylinder. The input side of the coupling gear pair is located on the output shaft of the rotary motor, and the output side is located on the fixed frame, so that when the rotary motor rotates, the cylinder assembly flips in the second vertical plane.

6. The comprehensive testing platform for new energy vehicle battery packs according to claim 2, characterized in that, Also includes: A platform moving guide rail extending along the predetermined straight direction. The bottom of the fixed end of the telescopic sleeve engages with the platform's moving guide rail and is movable along the predetermined straight direction.

7. The comprehensive testing platform for new energy vehicle battery packs according to claim 5, characterized in that: in, The impact plate includes a base, a driving hydraulic cylinder, and a plate body. The driving hydraulic cylinder is mounted on the base, and the output end of the driving hydraulic cylinder extends along the impact direction. The plate body is movably mounted on the base along the impact direction, and the output end of the driving hydraulic cylinder is connected to the bottom of the plate body.

8. The comprehensive testing platform for new energy vehicle battery packs according to claim 7, characterized in that: in, The impact plate also includes a hydraulic cylinder on the plate, a lifting entity, a driving gear, and a follow-up flap. The surface of the plate body facing the battery pack support plate is designated as the front side of the main body, and a vertically extending upward-pointing overturning rack is formed on this front side. The hydraulic cylinder on the plate is fixed to the front of the main body and has a vertically upward output end. The lifting entity is fixed to the output end. The driving gear meshes with the driving rack. The driving gear is rotatably mounted on the lifting entity via a follower shaft. The follower flap is fixed to the follower shaft, and the impact-bearing plane is formed on the follower flap.

9. The comprehensive testing platform for new energy vehicle battery packs according to claim 1, characterized in that: in, The upper plate surface is also provided with a plurality of lifting pads, which are used to lift the car battery pack relative to the upper plate surface.

10. A comprehensive testing method for new energy vehicle battery packs using the testing platform described in claim 8, characterized in that, Includes the following steps: Step S1: Horizontally position the battery pack support plate and place the new energy vehicle battery pack horizontally on the upper plate surface; Step S2: Spray water onto the bottom surface of the new energy vehicle battery pack through a spray nozzle to conduct a spray test; Step S3: Conduct a nail penetration test on the new energy vehicle battery pack, including the following sub-steps: Step S3-1: Press and position the new energy vehicle battery pack on the battery pack support plate using the cylinder assembly; Step S3-2: Position the tip of the needle toward the surface of the new energy vehicle battery pack and ensure that the needle has only linear freedom of movement, so that the needle can penetrate the new energy vehicle battery pack. Step S3-3: By flipping the battery pack carrier plate in the first vertical plane, the new energy vehicle battery pack is made to have at least two different tilt positions, and the spike is inserted into the new energy vehicle battery pack. Step S4: Conduct a crash test on the new energy vehicle battery pack, including the following sub-steps: Step S4-1: Make the battery pack support plate horizontal, and use the cylinder assembly to horizontally press and position the new energy vehicle battery pack on the upper plate surface; Step S4-2: The impact-bearing plane is attached to the surface of the new energy vehicle battery pack, and the test vehicle moves and impacts the new energy vehicle battery pack from the initial impact position. Step S4-3: By flipping the battery pack support plate in the second vertical plane, the new energy vehicle battery pack is in at least one tilted position. For each tilted position, the test car is returned to the initial impact position. The impact plane is adjusted to fit and conform to the surface of the new energy vehicle battery pack, and the new energy vehicle battery pack is moved and impacted. Step S5: Based on the conclusions of the above three tests, determine the quality of the new energy vehicle battery pack.

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