A fatigue detection device for a new energy battery pack

Abstract

The utility model relates to new energy battery package technical field especially, more particularly to a kind of fatigue detection device of new energy battery package, including first side plate, the outside surface of the first side plate is fixedly connected with second side plate, the outside surface of the first side plate is fixedly connected with fixed part, the side surface of the fixed part is fixedly connected with outer frame plate.The first side plate, first connecting piece, second side plate, second connecting piece and fixed part etc. are arranged in the application, so that the device is adjusted after fixing battery package, the design of first connecting piece and second connecting piece, when the first side plate and second side plate are rotated and lifted, ensure mutual connection while maximum limit angle adjustment, so that battery package carries out different angle fatigue test, through the design of coupler, rotating plate can be different rotation to two sides respectively, so that the outer frame plate of two sides is better lifted, simulates more different environmental test conditions, without frequently changing device.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery pack technology, and in particular to a fatigue detection device for new energy battery packs. Background Technology

[0002] Fatigue testing devices for new energy vehicle battery packs are specialized equipment used to test the ability of new energy vehicle battery packs to resist fatigue damage under long-term use or specific operating conditions. Their core purpose is to simulate various cyclic loads such as stress, vibration, and impact that the battery pack may encounter during actual use. By continuously applying these loads, the device observes changes in the battery pack's performance, structural integrity, and the occurrence of faults (such as leakage, short circuits, and performance degradation), thereby assessing the battery pack's fatigue life and reliability. Testing with this type of device helps manufacturers identify potential problems in the battery pack's design or production process, optimize the battery pack's structure and materials, and improve its safety and durability in actual use, providing crucial assurance for the reliability of new energy vehicles.

[0003] In existing technologies, most testing devices can only perform fatigue tests in a single direction. However, in actual use (such as when a vehicle is driving on a bumpy road or during rapid acceleration / braking), battery packs are often subjected to complex stresses (such as the coupled effects of multiple factors such as vibration, impact, torsion, and temperature changes). This results in the test results failing to truly reflect the fatigue failure patterns of battery packs under complex operating conditions. Utility Model Content

[0004] The purpose of this invention is to provide a fatigue testing device for new energy battery packs, in order to solve the problem mentioned in the background art that most existing testing devices can only perform fatigue testing in a single direction. However, in actual use (such as when a vehicle is driving on a bumpy road or during rapid acceleration / braking), battery packs are often subjected to complex stresses (such as the coupled effects of multiple factors such as vibration, impact, torsion, and temperature changes), which makes the test results unable to truly reflect the fatigue failure law of the battery pack under complex working conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fatigue detection device for a new energy battery pack, comprising a first side plate, a second side plate fixedly connected to the outer surface of the first side plate, a fixing member fixedly connected to the outer surface of the first side plate, and an outer frame plate fixedly connected to one side surface of the fixing member, and further comprising:

[0006] The second connector has a first connector at one end of the first side plate and a second connector at one end of the second side plate. The function of the first connector and the second connector is to connect the first side plate and the second side plate.

[0007] The fastener has a fixing plate on its top side surface, a first threaded groove on its outer side surface, a second threaded groove on its inner side surface, a screw rod inside the second threaded groove and the first threaded groove, and a nut on the outer side surface of the screw rod.

[0008] Preferably, two sets of fasteners are provided on the outer side of the first side plate, the nut is provided above the first threaded groove, and the screw is threadedly connected to both the first and second threaded grooves.

[0009] Preferably, a base plate is fixedly connected to the bottom surface of the fixing member, and a rotating member is rotatably connected to the inner surface of the fixing member.

[0010] Preferably, a rotating column is fixedly connected to the upper surface of the fixing member, and a fixing plate is rotatably connected to the outer surface of the rotating column.

[0011] Preferably, a rotating plate is fixedly connected to the outer surface of the outer frame plate, a spring is fixedly connected to the inner surface of the rotating plate, and the rotating plate has a partition design in the middle, which is rotatably connected by a connecting shaft.

[0012] Preferably, a rotating plate is fixedly connected to the outer surface of the outer frame plate, and a motor is provided on the inner surface of the rotating plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application, through the arrangement of a first side plate, a first connector, a second side plate, a second connector, and a fixing component, enables the device to be adjusted at multiple angles after the battery pack is fixed. The design of the first and second connectors ensures that the first and second side plates are connected to each other while maximizing the angle adjustment during rotation and lifting, allowing the battery pack to undergo fatigue testing at different angles.

[0015] 2. This application uses an outer frame plate, a rotating plate, a spring, a connecting shaft, a rotating plate, and a motor. When the motor starts, it drives the coupler at the output end to rotate. Through the design of the coupler, the rotating plate can rotate to both sides in different directions, so that the outer frame plates on both sides can be raised better. This can simulate test conditions in more different environments without the need for frequent device replacement. Attached Figure Description

[0016] Figure 1 This is a side view of the fatigue detection device for a new energy battery pack proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the screw and nut working together in a fatigue detection device for a new energy battery pack proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the interaction between the first side plate and the fixing component of a fatigue detection device for a new energy battery pack proposed in this utility model.

[0019] Figure 4 for Figure 3 Enlarged structural diagram of A in the middle

[0020] Figure 5 This is a schematic diagram of the interaction between the first side plate and the first connecting member of a fatigue detection device for a new energy battery pack proposed in this utility model.

[0021] In the diagram: 1. First side plate; 2. First connecting piece; 3. Second side plate; 4. Second connecting piece; 5. Fixing piece; 6. Base plate; 7. Rotating piece; 8. Rotating column; 9. Fixing plate; 10. First threaded groove; 11. Second threaded groove; 12. Screw; 13. Nut; 14. Outer frame plate; 15. Rotating plate; 16. Spring; 17. Connecting shaft; 18. Rotating plate; 19. Motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 5This utility model provides a technical solution: a fatigue detection device for a new energy battery pack, including a first side plate 1, a second side plate 3 fixedly connected to the outer surface of the first side plate 1, a fixing member 5 fixedly connected to the outer surface of the first side plate 1, an outer frame plate 14 fixedly connected to one side surface of the fixing member 5, a first connecting member 2 provided at one end of the first side plate 1, and a second connecting member 4 provided at one end of the second side plate 3. Both the first connecting member 2 and the second connecting member 4 serve to connect the first side plate 1 and the second side plate 3. The function of the first connecting member 2 is to connect the two ends of the first side plate 1, allowing it to rotate, etc. The second connecting piece 4 connects the second side plates 3 at both ends, allowing them to rotate and move. The top surface of the fixing piece 5 is provided with a fixing plate 9. The outer surface of the fixing plate 9 is provided with a first threaded groove 10, and the inner surface of the fixing piece 5 is provided with a second threaded groove 11. A screw 12 is provided inside the second threaded groove 11 and the first threaded groove 10. A nut 13 is provided on the outer surface of the screw 12. The design of the first threaded groove 10 and the second threaded groove 11 limits the vertical position of the screw 12. The tightness of the screw 12 is determined by rotating the nut 13.

[0024] Two sets of fasteners 5 are provided on the outer side of the first side plate 1. Nuts 13 are provided above the first threaded groove 10. The screw 12 is threadedly connected to the first threaded groove 10 and the second threaded groove 11. The fasteners 5 on the first side plate 1 can better fix the battery pack and prevent the battery pack from moving during fatigue testing. The design of the screw 12 and the first threaded groove 10 and the second threaded groove 11 can make the fixing of the screw 12 smoother.

[0025] The bottom surface of the fixing component 5 is fixedly connected to the base plate 6, and the inner surface of the fixing component 5 is rotatably connected to the rotating component 7. The function of the base plate 6 is to place the battery pack, and the function of the rotating component 7 is to press down on the battery pack to achieve fixation.

[0026] A rotating column 8 is fixedly connected to the upper surface of the fastener 5, and a fixing plate 9 is rotatably connected to the outer surface of the rotating column 8. When the fixing plate 9 rotates, it will rotatably connect to the outer surface of the rotating column 8.

[0027] A rotating plate 15 is fixedly connected to the outer surface of the outer frame plate 14, and a spring 16 is fixedly connected to the inner surface of the rotating plate 15. The middle of the rotating plate 15 is designed as a partition and is rotatably connected through a connecting shaft 17. The two ends of the spring 16 are fixedly connected to the inner surface of the rotating plate 15. Its function is to release force and rebound when the device is pulled and deformed.

[0028] A rotating plate 18 is fixedly connected to the outer surface of the outer frame plate 14. A motor 19 is provided on the inner surface of the rotating plate 18. The function of the motor 19 is to drive the rotating plate 18 to rotate. The rotating plate 18 is divided into two layers. The coupler connected to the output end of the motor 19 is fixedly connected. Through the design of the coupler, the rotating plate 18 can rotate to the two sides respectively.

[0029] Working principle: First, place the battery pack on the upper surface of the first side plate 1 and the second side plate 3. The battery pack is clamped to the first side plate 1 and the second side plate 3 by the clamping device. After clamping, connect the first side plate 1 and the fixing member 5. First, rotate the four sets of fixing plates 9 so that the fixing plates 9 rotate around the rotating column 8. Then rotate the rotating member 7 to flip it upward. Then place the first side plate 1 on the bottom plate 6. The first side plate 1 and the second side plate 3 are fixedly connected, so the position of the second side plate 3 is parallel to the position of the first side plate 1. At this time, flatten the rotating member 7 and rotate the fixing plate 9 back to its original position. Then insert the screw 12 into the first threaded groove 10 on the fixing plate 9 and the second threaded groove 11 opened on the inner side of the fixing member 5. After insertion, tighten the nut 13 to fix the position of the first side plate 1.

[0030] In existing technologies, most testing devices can only perform fatigue testing in a single direction. However, in actual use (such as when a vehicle is driving on a bumpy road or during rapid acceleration / braking), battery packs are often subjected to complex stresses (such as the coupled effects of multiple factors such as vibration, impact, torsion, and temperature changes). This results in the test results failing to truly reflect the fatigue failure pattern of the battery pack under complex working conditions. This device, however, can perform fatigue testing on the battery pack from multiple angles and directions through multi-angle coordination.

[0031] After the fixing member 5 is fixed, an outer frame plate 14 is fixedly connected to the outer surface of the fixing member 5. A connecting plate is fixedly connected to the lower surface of the outer frame plate 14, which is used to connect telescopic devices such as cylinders. After connecting the lower connecting plate and telescopic devices such as cylinders, fatigue testing of the battery pack begins. By starting the cylinder, the outer frame plate 14 is lifted. When the outer frame plate 14 is lifted, it will drive the fixing member 5 to lift. At this time, the spring 16 in the rotating plate 15 is stretched. The design of the connecting shaft 17 allows the rotating plates 15 on both sides to rotate without... The same degree of lifting causes bending and compression of one or more corners of the battery pack. At the same time, the motor 19 starts, driving the coupler at the output end to rotate. Through the design of the coupler, the rotating plate 18 can rotate to both sides differently, so that the outer frame plates 14 on both sides can be lifted better, simulating more test conditions under different environments. Through the design of the first connector 2 and the second connector 4, all four corners of the device can be lifted at the same time, and fatigue tests such as vibration can also be performed through this device without frequent device replacement.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fatigue detection device for a new energy battery pack, comprising a first side plate (1), a second side plate (3) fixedly connected to the outer surface of the first side plate (1), a fixing member (5) fixedly connected to the outer surface of the first side plate (1), and an outer frame plate (14) fixedly connected to one side surface of the fixing member (5), characterized in that, It also includes: The second connector (4) is provided with a first connector (2) at one end of the first side plate (1) and a second connector (4) at one end of the second side plate (3). The function of the first connector (2) and the second connector (4) is to connect the first side plate (1) and the second side plate (3). Nut (13), the top side surface of the fixing member (5) is provided with a fixing plate (9), the outer side surface of the fixing plate (9) is provided with a first threaded groove (10), the inner side surface of the fixing member (5) is provided with a second threaded groove (11), the second threaded groove (11) and the first threaded groove (10) are provided with a screw (12), and the outer side surface of the screw (12) is provided with a nut (13).

2. The fatigue detection device for a new energy battery pack according to claim 1, characterized in that: Two sets of fasteners (5) are provided on the outside of the first side plate (1). The nut (13) is located above the first threaded groove (10). The screw (12) is threadedly connected to the first threaded groove (10) and the second threaded groove (11).

3. The fatigue detection device for a new energy battery pack according to claim 2, characterized in that: The bottom surface of the fixing member (5) is fixedly connected to the base plate (6), and the inner surface of the fixing member (5) is rotatably connected to the rotating member (7).

4. The fatigue detection device for a new energy battery pack according to claim 2, characterized in that: A rotating column (8) is fixedly connected to the upper surface of the fixing member (5), and a fixing plate (9) is rotatably connected to the outer surface of the rotating column (8).

5. The fatigue detection device for a new energy battery pack according to claim 1, characterized in that: A rotating plate (15) is fixedly connected to the outer surface of the outer frame plate (14), and a spring (16) is fixedly connected to the inner surface of the rotating plate (15). The rotating plate (15) has a partition design in the middle and is rotatably connected by a connecting shaft (17).

6. The fatigue detection device for a new energy battery pack according to claim 1, characterized in that: A rotating plate (18) is fixedly connected to the outer surface of the outer frame plate (14), and a motor (19) is provided on the inner surface of the rotating plate (18).

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