Drop impact device of new energy automobile power battery shell

Abstract

The utility model relates to the technical field of impact force testing, in particular to a falling impact device of a new energy automobile power battery shell, which comprises a base arranged on a foundation and a supporting frame body, the supporting frame body is arranged on the outer side of the base along the circumferential direction, and a guide assembly is arranged between the upper end of the supporting frame body and the base. The base is provided with a measuring assembly located on the side of the guide assembly, the guide assembly is sequentially and slidably connected with a lifting assembly and a weight assembly assembly from top to bottom, the lifting assembly comprises a lifting unit and an unhooking unit connected to the lower end of the lifting unit, and the unhooking unit comprises a separable retaining ring. The weight assembly component comprises a containing frame in sliding connection with the guide component and a plurality of mass blocks located in the containing frame, the retaining ring extends downwards to the position below the containing frame, the retaining ring is connected with the containing frame, the mass blocks are arranged on the retaining ring in a sleeving mode, and a hammer head located below the containing frame is arranged at the lower end of the retaining ring. The drop impact device in the scheme is relatively low in complexity, relatively low in cost and relatively short in test period.

Description

Technical Field

[0001] The utility model relates to the technical field of impact force testing, and specifically provides a drop impact device for a power battery shell of a new energy vehicle. Background Art

[0002] The power battery system, or battery pack, is the source of power for new energy vehicles. Its structure is complex, typically consisting of multiple battery modules, each comprised of anywhere from a few to a dozen cells. Currently, most pure electric vehicles use steel or aluminum alloys for the protective casing of the battery pack to ensure the safety of the chassis power battery. With the increasing focus on energy conservation, environmental protection, and lightweighting in automobiles, a variety of lightweight materials, such as glass fiber reinforced composites, are now available for battery casings. However, regardless of the material, it must meet certain strength requirements to withstand the stresses of bottoming out, navigating bumps, and impacts experienced during daily driving.

[0003] The drop impact resistance of new energy vehicle power battery casings is a crucial element in every aspect of automotive design, production, and use, and is a key indicator for evaluating vehicle performance, attracting increasing attention from manufacturers and consumers. For battery casings, automotive parts crucial to battery safety, manufacturers are integrating CAE simulations into various operating conditions during the initial design phase for drop impact testing. Once the product is finalized, these tests must also be verified experimentally. However, traditional testing systems primarily utilize the entire vehicle for impact support testing. These systems are expensive, complex, and require lengthy testing cycles. These systems are primarily conducted at specialized testing facilities, making them prohibitively expensive for specialized component manufacturers. However, to ensure the quality of battery casings before they leave the factory, component manufacturers must effectively verify the drop impact resistance of their products.

[0004] In summary, how to design a drop impact device for the power battery housing of new energy vehicles with a simple structure, low cost and short test cycle is an urgent problem that needs to be solved. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a drop impact device for the power battery shell of a new energy vehicle. The device has a simple overall structure, convenient operation, short test cycle and low cost, and is more suitable for use by parts manufacturers to monitor product quality.

[0006] The utility model provides a drop impact device for the power battery shell of a new energy vehicle, which specifically includes a base and a support frame arranged on the foundation, the support frame is located on the outside of the base along the circumferential direction, a guide assembly is provided between the upper end of the support frame and the base, a measuring assembly is provided on the base and is located on the side of the guide assembly, and a lifting and hoisting assembly and a weight assembly are slidably connected to the guide assembly from top to bottom in sequence; the lifting and hoisting assembly includes a lifting unit and a decoupling unit connected to the lower end of the lifting unit, and the decoupling unit includes a detachable buckle; the weight assembly includes a accommodating frame slidably connected to the guide assembly and a plurality of mass blocks located in the accommodating frame, the buckle extends downward to the bottom of the accommodating frame, the buckle is connected to the accommodating frame and the mass blocks are sleeved on the buckle, and the lower end of the buckle is provided with a hammer head located below the accommodating frame.

[0007] Furthermore, the lifting and lowering assembly includes a lifting frame that is slidably connected to the guide assembly and the unhooking unit is located in the lifting frame. A connecting through hole is provided at the lower end of the lifting frame, and a buckle passes downward through the connecting through hole to connect with the accommodating frame; a pulling pressure sensor is provided between the unhooking unit and the upper end of the lifting frame.

[0008] Furthermore, the unhooking unit includes a lock seat connected to the lower end of the tension and pressure sensor, and the lock seat is connected to a lock tongue and a driving member, and the power output end of the driving member is connected to the lock tongue; the lock seat is also provided with a receiving groove for accommodating the buckle, and the driving member can drive the lock tongue to lock the buckle or loosen the buckle.

[0009] Furthermore, the lock tongue is connected to the lower part of the lock seat, the driving component includes a mounting bracket and a cylinder arranged on the mounting bracket, the mounting bracket is connected to the upper part of the lock seat, and the power output end of the cylinder is connected to the lock tongue.

[0010] Furthermore, the lifting unit includes a lifting hook provided on the upper end surface of the lifting frame and a winch connected to the lifting hook.

[0011] Furthermore, a hammer head seat is provided at the lower end of the accommodating frame, the hammer head is connected to the hammer head seat, and a plurality of acceleration sensors are provided on the upper end surface of the hammer head.

[0012] Furthermore, the measuring assembly includes a measuring bracket located at the upper end of the base and a speed meter arranged on the measuring bracket.

[0013] Furthermore, the guide assembly includes at least one set of guide rods connected between the upper end surface of the support frame and the base, and the lifting frame and the accommodating frame are both slidably connected to the guide rods.

[0014] Furthermore, the supporting frame includes a lower frame and an upper frame connected to the upper end of the middle part of the lower frame; the lower frame is connected to the foundation, and the base is located in the middle part of the lower frame; the length and width of the lower frame are both greater than the length and width of the upper frame, and an inclined support column is erected between the corners of the upper frame and the lower frame.

[0015] Furthermore, a lower ladder and an upper ladder are respectively provided at the side ends of the lower frame and the upper frame, and a workbench located at the upper end of the lower frame is connected between the upper ladder and the lower ladder.

[0016] Compared with the existing technology, the present invention can achieve the following beneficial effects: the drop impact device in this solution adopts a tower structure. Compared with the traditional traction test system, the structure is less complex, the cost is lower, the test preparation cycle is shorter, and it is more suitable for the use needs of parts manufacturers when monitoring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the drop impact device provided according to the embodiment of the utility model. Figure 1 (Unhooking unit and lifting unit are not shown);

[0018] Figure 2 This is a schematic diagram of the overall structure of the drop impact device provided according to the embodiment of the utility model. Figure 2 (Unhooking unit, lifting unit, and connecting net are not shown);

[0019] Figure 3 It is a partial structural diagram of a lifting and hoisting assembly provided according to an embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a decoupling unit provided according to an embodiment of the utility model;

[0021] Figure 5 It is a partial structural schematic diagram of a weight assembly component provided according to an embodiment of the utility model.

[0022] The accompanying drawings include: foundation 1, base 2, support frame 3, lower frame 4, upper frame 5, guide assembly 6, measuring assembly 7, lifting assembly 8, weight assembly assembly 9, buckle 10, accommodating frame 11, mass block 12, hammer head 13, lifting frame 14, tension and pressure sensor 15, lock seat 16, lock tongue 17, accommodating groove 18, mounting bracket 19, cylinder 20, lifting hook 21, hammer head seat 22, acceleration sensor 23, measuring bracket 24, speedometer 25, guide rod 26, inclined support column 27, lower ladder 28, upper ladder 29, workbench 30, connecting net 31, unhooking unit 32. DETAILED DESCRIPTION

[0023] In the following, reference will be made to the Figure 1-Figure 5 The embodiments of the present invention are described. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0024] In order to make the purpose, technical solutions and advantages of this utility model more clear, the following Figure 1-Figure 5 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0025] A drop impact device for a new energy vehicle power battery housing, such as Figure 1 As shown, it includes a base 2 and a support frame 3 provided on a foundation 1. The base 2 is usually an iron plate structure. The support frame 3 is located circumferentially outside the base 2. A guide assembly 6 is provided between the upper end of the support frame 3 and the base 2. A measuring assembly 7 is provided on the base 2 and is located on the side of the guide assembly 6. A lifting assembly 8 and a weight assembly 9 are slidably connected to the guide assembly 6 from top to bottom in sequence. The guide assembly 6 is used to guide the lifting assembly 8 and the weight assembly 9.

[0026] like Figure 1-Figure 5 As shown, the guide assembly 6 includes at least one set of guide rods 26 connected between the upper end surface of the support frame (3) and the base 2. The guide rods 26 are chrome-plated polished cylindrical guide structures. The guide rods 26 guide the up and down movement of the lifting assembly 8 and the weight assembly 9, and are used for guiding the falling weight. The measuring assembly 7 includes a measuring bracket 24 located at the upper end of the base 2 and a speed meter 25 provided on the measuring bracket 24.

[0027] The lifting and hoisting assembly 8 includes a lifting unit and a decoupling unit 32 connected to the lower end of the lifting unit. The lifting and hoisting assembly 8 also includes a lifting frame 14 that is slidably connected to the guide rod 26 in the guide assembly 6. The lifting frame 14 can slide up and down along the guide rod 26. The decoupling unit 32 is located in the lifting frame 14. A tension and pressure sensor 15 is provided between the decoupling unit 32 and the upper end of the lifting frame 14. The lifting unit includes a lifting hook 21 provided on the upper end surface of the lifting frame 14 and a winch connected to the lifting hook 21.

[0028] The unhooking unit 32 includes a detachable buckle 10. The unhooking unit 32 also includes a lock seat 16 connected to the lower end of the tension and pressure sensor 15. A lock tongue 17 and a driving member are connected to the lock seat 16. The power output end of the driving member is connected to the lock tongue 17. A receiving groove 18 for accommodating the buckle 10 is provided on the lock seat 16. The driving member can drive the lock tongue 17 to lock the buckle 10 or loosen the buckle 10. Under the action of the driving member and the lock tongue 17, the buckle 10 can be locked in the receiving groove 18 or separated from the receiving groove 18. The unhooking unit 32 is a specially designed self-locking device. When the buckle 10 is locked, that is, it grabs the hammer and then self-locks. No accidents will occur under the action of gravity, and it will not open in the event of an accidental power outage. It has high safety.

[0029] The lock tongue 17 is connected to the lower part of the lock base 16, and the driving part includes a mounting bracket 19 and a cylinder 20 provided on the mounting bracket 19. The mounting bracket 19 is connected to the upper part of the lock base 16, and the power output end of the cylinder 20 is connected to the lock tongue 17. When the buckle 10 needs to be locked, the cylinder 20 drives the lock tongue 17 to move toward the receiving groove 18 and lock the buckle 10. When the buckle 10 needs to be loosened, the cylinder 20 drives the lock tongue 17 to move away from the receiving groove 18 and loosen the buckle 10. At this time, the buckle 10 disengages from the receiving groove 18 and separates from the lock base 16.

[0030] The weight assembly component 9 includes a receiving frame 11 slidably connected to the guide component 6 and a plurality of mass blocks 12 located in the receiving frame 11. The receiving frame 11 is slidably connected to the guide rod 26 and can slide up and down along the guide rod 26. The buckle 10 extends downward to the bottom of the receiving frame 11. Specifically, the lower end of the lifting frame 14 is provided with a connecting through hole, and the buckle 10 passes downward through the connecting through hole to be connected to the receiving frame 11. The mass block 12 is mounted on the buckle 10. The number and weight of the mass blocks 12 can be added or subtracted according to actual needs. The basic drop hammer can add a mass block 12 to increase the gravitational acceleration of the drop hammer, thereby simulating the relative impact on the battery casing during high-speed driving of the car.

[0031] The lower end of the buckle 10 is provided with a hammer head 13 located below the accommodating frame 11, and the lower end of the accommodating frame 11 is provided with a hammer head seat 22. The hammer head 13 is connected to the hammer head seat 22. A plurality of acceleration sensors 23 are provided on the upper end surface of the hammer head 13, and the product to be tested is located below the hammer head 13.

[0032] The support frame 3 includes a lower frame 4 and an upper frame 5 connected to the upper end of the middle part of the lower frame 4. The drop impact device has a tower structure as a whole. The lower frame 4 is connected to the foundation 1, and the base 2 is located in the middle of the lower frame 4. The length and width of the lower frame 4 are both greater than the length and width of the upper frame 5 to ensure the support strength of the entire support frame 3. An inclined support column 27 is installed between the corners of the upper frame 5 and the lower frame 4 to further ensure the support strength of the upper frame 5. At the same time, a lower ladder 28 and an upper ladder 29 are respectively provided at the side ends of the lower frame 4 and the upper frame 5. The upper ladder 29 and the lower ladder 28 are connected to a workbench 30 located at the upper end of the lower frame 4, which is convenient for staff to operate and repair the equipment. A connecting net 31 is also provided on the lower frame 4, which can not only protect the equipment and staff, but also facilitate staff to observe the test conditions. The drop impact device in this embodiment can use gravity acceleration to simulate a working condition of about 10M / S to perform dynamic scratch and impact tests on component products.

[0033] During use, an appropriate mass block 12 is added to the receiving frame 11 as required, and the cylinder 20 drives the locking tongue 17 to lock the buckle 10 in the receiving groove 18. At this time, the lifting and hoisting assembly 8 is connected to the weight assembly 9 through the buckle 10, and the winch can drive the lifting frame 14 and the receiving frame 11 to move up and down. During testing, the cylinder 20 drives the locking tongue 17 to release the buckle 10 from the receiving groove 18, separating the lifting frame 14 from the receiving frame 11. At this time, the locking tongue 17, the receiving frame 11, and the hammer head 13 all fall downward under the action of gravity, realizing the drop hammer test.

[0034] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0035] The above specific embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A drop impact device for a power battery housing of a new energy vehicle, characterized in that: The invention comprises a base (2) and a support frame (3) arranged on a foundation (1); the support frame (3) is located outside the base (2) in the circumferential direction; a guide assembly (6) is arranged between the upper end of the support frame (3) and the base (2); a measuring assembly (7) is arranged on the base (2) and is located on the side of the guide assembly (6); a lifting and hoisting assembly (8) and a weight assembly (9) are slidably connected to the guide assembly (6) in sequence from top to bottom; the lifting and hoisting assembly (8) comprises a lifting unit and a release hook connected to the lower end of the lifting unit The unhooking unit (32) comprises a detachable buckle (10); the weight assembly component (9) comprises a receiving frame (11) slidably connected to the guide component (6) and a plurality of mass blocks (12) located in the receiving frame (11); the buckle (10) extends downward to below the receiving frame (11); the buckle (10) is connected to the receiving frame (11) and the mass blocks (12) are sleeved on the buckle (10); and a hammer head (13) located below the receiving frame (11) is provided at the lower end of the buckle (10).

2. The drop impact device for the power battery housing of a new energy vehicle according to claim 1, characterized in that: The lifting and lowering assembly (8) comprises a lifting frame (14) slidably connected to the guide assembly (6), and the unhooking unit (32) is located in the lifting frame (14); a connecting through hole is provided at the lower end of the lifting frame (14), and the buckle (10) passes downward through the connecting through hole to be connected to the accommodating frame (11); a tension pressure sensor (15) is provided between the unhooking unit (32) and the upper end of the lifting frame (14).

3. The drop impact device for the power battery housing of a new energy vehicle according to claim 2, characterized in that: The decoupling unit (32) comprises a lock seat (16) connected to the lower end of the tension and pressure sensor (15), a lock tongue (17) and a driving member being connected to the lock seat (16), and a power output end of the driving member being connected to the lock tongue (17); a receiving groove (18) for receiving the buckle (10) is also provided on the lock seat (16), and the driving member can drive the lock tongue (17) to lock the buckle (10) or release the buckle (10).

4. The drop impact device for the power battery housing of a new energy vehicle according to claim 3, characterized in that: The lock tongue (17) is connected to the lower part of the lock seat (16), the driving member comprises a mounting bracket (19) and a cylinder (20) arranged on the mounting bracket (19), the mounting bracket (19) is connected to the upper part of the lock seat (16), and the power output end of the cylinder (20) is connected to the lock tongue (17).

5. The drop impact device for the power battery housing of a new energy vehicle according to claim 4, characterized in that: The lifting unit comprises a lifting hook (21) arranged on the upper end surface of the lifting frame (14) and a winch connected to the lifting hook (21).

6. The drop impact device for the power battery housing of a new energy vehicle according to claim 5, characterized in that: A hammer head seat (22) is provided at the lower end of the accommodating frame (11), the hammer head (13) is connected to the hammer head seat (22), and a plurality of acceleration sensors (23) are provided on the upper end surface of the hammer head (13).

7. The drop impact device for the power battery housing of a new energy vehicle according to claim 6, characterized in that: The measuring assembly (7) comprises a measuring bracket (24) located at the upper end of the base (2) and a speed meter (25) arranged on the measuring bracket (24).

8. The drop impact device for the power battery housing of a new energy vehicle according to claim 7, characterized in that: The guide assembly (6) comprises at least one set of guide rods (26) connected between the upper end surface of the support frame (3) and the base (2), and the lifting frame (14) and the containing frame (11) are both slidably connected to the guide rods (26).

9. The drop impact device for the power battery housing of a new energy vehicle according to claim 8, characterized in that: The support frame (3) comprises a lower frame (4) and an upper frame (5) connected to the upper middle end of the lower frame (4); the lower frame (4) is connected to the foundation (1), and the base (2) is located in the middle of the lower frame (4); the length and width of the lower frame (4) are greater than the length and width of the upper frame (5), and an inclined support column (27) is provided between the corners of the upper frame (5) and the lower frame (4).

10. The drop impact device for the power battery housing of a new energy vehicle according to claim 9, characterized in that: A lower ladder (28) and an upper ladder (29) are respectively provided at the side ends of the lower frame (4) and the upper frame (5); a workbench (30) located at the upper end of the lower frame (4) is connected between the upper ladder (29) and the lower ladder (28).

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