Tension and compression testing device for carbon fiber end cover of battery module

Abstract

The utility model discloses a tension and compression testing device for a carbon fiber end cover of a battery module, which belongs to the technical field of battery modules of new energy automobiles and comprises a base, a lower vacuum chuck is arranged at the top of the base, a support frame is arranged on one side of the top of the base, and a hydraulic device is arranged at the top of the support frame. An upper vacuum suction cup is arranged at the tail end of a hydraulic rod at the bottom of the hydraulic device, a pull pressure sensor is arranged at the joint of the top of the upper vacuum suction cup and the hydraulic rod, a telescopic suction head is arranged at the bottom of the upper vacuum suction cup, and a second telescopic pipe is arranged at the top of the telescopic suction head. According to the carbon fiber end cover tension and pressure testing device, tension and pressure testing of the carbon fiber end cover is achieved, the telescopic suction head is arranged at the bottom of the upper vacuum suction cup, the telescopic suction head can be better attached to the upper surface, with a protruding structure, of the carbon fiber end cover, and therefore the carbon fiber end cover can be evenly stressed during testing, and the testing stability and precision are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicle battery modules, and in particular relates to a tension and compression testing device for a carbon fiber end cover of a battery module. Background Art

[0002] The battery module of new energy vehicles is a unit composed of multiple battery cells (battery monomers) connected in series and parallel. This combination increases the voltage and energy storage capacity of the battery system to meet the power requirements in different application scenarios. The main functions of the battery module include connecting the battery cells together to increase the voltage and capacity, and also include a battery management system (BMS), which is responsible for monitoring and managing the battery charging and discharging process to ensure the safety and stable performance of the battery. BMS can monitor the voltage, temperature, and current of the battery cells, and perform battery state estimation and balance control to avoid overcharging, over-discharging, overheating, etc. In addition, the battery module usually has a shell, carbon fiber end caps, and a protective structure to protect the battery cells and BMS, and provide physical support and isolation. This design improves the safety and reliability of the battery system, making it suitable for electric vehicles, hybrid vehicles, energy storage systems, and other fields.

[0003] At present, the existing battery module carbon fiber end caps need to be tested for tensile and compressive strength during the production process. Due to the different structures of the carbon fiber end caps on the battery modules of different models, the traditional tensile and compressive testing device cannot form a good fit with the carbon fiber end caps, resulting in only partial side view test results during the test, which greatly affects the test results. For this reason, we propose a tensile and compressive testing device for the carbon fiber end caps of battery modules. Utility Model Content

[0004] The purpose of the utility model is to provide a tension and compression test device for a battery module carbon fiber end cover to solve the existing problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tension and compression testing device for a carbon fiber end cover of a battery module, comprising a base, an upper vacuum suction cup and a telescopic suction head, wherein a lower vacuum suction cup is fixedly installed at the top center position of the base by means of inlaying, a support frame is fixedly welded to one side of the top of the base, a hydraulic device is arranged at the top end of the support frame, an upper vacuum suction cup is arranged at the end of a bottom hydraulic rod of the hydraulic device, a tension and pressure sensor is arranged at the connection between the top center position of the upper vacuum suction cup and the hydraulic rod, a plurality of telescopic suction heads are arranged at the bottom of the upper vacuum suction cup, the top of the telescopic suction head extends to the interior of a shrinkage groove opened at the bottom end of the upper vacuum suction cup, and is slidably connected to the inner wall of the shrinkage groove, a second telescopic tube is arranged at the top of the telescopic suction head, the second telescopic tube is arranged inside the shrinkage groove, and the two ends are respectively sealed and connected to the telescopic suction head and the air pipe inside the upper vacuum suction cup.

[0006] Preferably, the inner walls on both sides of the shrinkage groove are provided with limiting grooves, and limiting blocks are arranged on both sides of the top of the telescopic suction head. The limiting blocks extend into the limiting groove and are slidably connected to the inner wall thereof.

[0007] Preferably, the inner wall surface of the limit groove is provided with a plurality of positioning grooves, a micro electric push rod is fixedly embedded inside the limit block, a positioning block is fixedly installed at the end of the micro electric push rod, and the length of the positioning block is greater than the depth of the positioning groove.

[0008] Preferably, an ejection spring is arranged inside the limiting groove, and two ends of the ejection spring are fixedly connected to the top wall of the limiting groove and the top of the limiting block respectively.

[0009] Preferably, a vacuum device is fixedly installed inside the base and on the inner side of the top of the support frame, and the vacuum device consists of a compressor and a vacuum pump. The upper vacuum suction cup is sealed and connected to the vacuum device on the inner side of the top of the support frame through a first telescopic tube, and the lower vacuum suction cup is sealed and connected to the vacuum device inside the base through a conduit.

[0010] Preferably, a sealing gasket is provided at the bottom of the telescopic suction head, and the sealing gasket is an annular structure, and the sealing gasket is fixedly mounted on the bottom outer ring of the telescopic suction head by gluing.

[0011] Preferably, a stopper is fixedly mounted at the center position of the top wall of the limiting groove, and the stopper is arranged at the inner top end of the ejection spring.

[0012] Preferably, a control panel is provided on one side of the top of the base, and the control panel is fixedly mounted on one side of the top wall of the base by means of inlaying.

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

[0014] 1. By using the upper vacuum suction cup and the lower vacuum suction cup in conjunction with the hydraulic device, the tensile and compressive tests on the carbon fiber end cap are realized, and a telescopic suction head is arranged at the bottom of the upper vacuum suction cup so that it can better fit the upper surface with the raised structure on the carbon fiber end cap, so that the carbon fiber end cap can be evenly stressed during the test, thereby improving the stability and accuracy of the test.

[0015] 2. The positioning blocks on both sides of the top of the telescopic suction head are positioned by means of the provided micro-electric push rod, positioning block and positioning groove, so that after all the telescopic suction heads are in full and close contact with the carbon fiber end caps, the positioning blocks are inserted into the positioning grooves to form a card-connected positioning state to ensure the stability of the telescopic suction heads, thereby avoiding the situation in which the test structure is affected due to the mobility of some telescopic suction heads during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the telescopic suction head structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 A is a schematic diagram of the enlarged structure.

[0019] In the figure: 1. base; 2. control panel; 3. lower vacuum suction cup; 4. support frame; 5. hydraulic device; 6. upper vacuum suction cup; 7. telescopic suction head; 8. first telescopic tube; 9. vacuum extraction device; 10. sealing gasket; 11. contraction groove; 12. second telescopic tube; 13. limit groove; 14. ejection spring; 15. limit block; 16. pull pressure sensor; 17. stop block; 18. positioning groove; 19. micro electric push rod; 20. positioning block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3The utility model provides a technical solution for a tension and compression testing device for a carbon fiber end cap of a battery module: it includes a base 1, an upper vacuum suction cup 6 and a telescopic suction head 7, a lower vacuum suction cup 3 is fixedly installed at the top center position of the base 1 by inlaying, a support frame 4 is fixedly welded to one side of the top of the base 1, a hydraulic device 5 is arranged at the top end of the support frame 4, an upper vacuum suction cup 6 is arranged at the end of the bottom hydraulic rod of the hydraulic device 5, a tension and pressure sensor 16 is arranged at the connection between the top center position of the upper vacuum suction cup 6 and the hydraulic rod, a plurality of telescopic suction heads 7 are arranged at the bottom of the upper vacuum suction cup 6, the top of the telescopic suction head 7 extends to the inside of a contraction groove 11 opened at the bottom end of the upper vacuum suction cup 6, and is slidably connected to the inner wall of the contraction groove 11, a second telescopic tube 12 is arranged at the top of the telescopic suction head 7, the second telescopic tube 12 is arranged inside the contraction groove 11, and the two ends are respectively connected to the telescopic suction head 7 and the air pipe inside the upper vacuum suction cup 6 in a sealed manner.

[0022] Specifically, the inner walls on both sides of the contraction groove 11 are provided with limiting grooves 13, and limiting blocks 15 are arranged on both sides of the top of the telescopic suction head 7. The limiting blocks 15 extend into the limiting groove 13 and are slidably connected with the inner wall thereof.

[0023] Specifically, the inner wall surface of the limit groove 13 is provided with a plurality of positioning grooves 18 , a micro electric push rod 19 is fixedly embedded inside the limit block 15 , a positioning block 20 is fixedly installed at the end of the micro electric push rod 19 , and the length of the positioning block 20 is greater than the depth of the positioning groove 18 .

[0024] Specifically, an ejection spring 14 is disposed inside the limiting groove 13 , and two ends of the ejection spring 14 are fixedly connected to the top wall of the limiting groove 13 and the top of the limiting block 15 , respectively.

[0025] Specifically, a vacuum device 9 is fixedly installed inside the base 1 and on the inner side of the top of the support frame 4. The vacuum device 9 is composed of a compressor and a vacuum pump. The upper vacuum suction cup 6 is sealed and connected to the vacuum device 9 on the inner side of the top of the support frame 4 through the first telescopic tube 8, and the lower vacuum suction cup 3 is sealed and connected to the vacuum device 9 inside the base 1 through a conduit.

[0026] Specifically, a sealing gasket 10 is provided at the bottom of the telescopic suction head 7. The sealing gasket 10 is an annular structure, and the sealing gasket 10 is fixedly mounted on the bottom outer ring of the telescopic suction head 7 by gluing.

[0027] Specifically, a stopper 17 is fixedly installed at the center position of the top wall of the limiting groove 13 , and the stopper 17 is arranged at the inner top end of the ejection spring 14 .

[0028] Specifically, a control panel 2 is disposed on one side of the top of the base 1 , and the control panel 2 is fixedly mounted on one side of the top wall of the base 1 by means of inlaying.

[0029] In this embodiment, when the carbon fiber end cap of the battery module is subjected to a tension and compression test, the carbon fiber end cap is first placed on the lower vacuum suction cup 3, and then the hydraulic rod at the bottom of the hydraulic device 5 is driven to press down, driving the upper vacuum suction cup 6 to move downward, so that the telescopic suction head 7 gradually contacts with the top of the carbon fiber end cap, and according to the concave and convex surface of the carbon fiber end cap, the telescopic suction head 7 at the corresponding position is pushed upward, thereby compressing the ejection spring 14, and the stopper 17 is used to limit the upward movement of the limit block 15 to prevent the ejection spring 14 from being compressed and deformed excessively, resulting in loss of recovery ability. After the sealing pads 10 at the bottom of all the telescopic suction heads 7 are completely in close contact with the surface of the carbon fiber end cap, the micro electric push rod 1 is used to 9 pushes the positioning block 20 to be inserted into the positioning groove 18, so that the two ends of the positioning block 20 form a clamping positioning state with the limit block 15 and the positioning groove 18 respectively, thereby ensuring the stability of the telescopic suction head 7, and then the upper vacuum suction cup 6 is pressurized by the hydraulic device 5, and the pressure value is detected by the tension pressure sensor 16. After the test is completed, the vacuum device 9 is used to work on the upper vacuum suction cup 3 and the lower vacuum suction cup 6, so that the upper vacuum suction cup 3 and the lower vacuum suction cup 6 respectively stably adsorb the upper and lower surfaces of the carbon fiber end cap, and then the hydraulic rod is driven upward by the hydraulic device 5, thereby realizing the tension test of the carbon fiber end cap. Such a design greatly reduces the difficulty of tension and compression tests on the carbon fiber end cap.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension and compression test device for a battery module carbon fiber end cap, comprising a base, an upper vacuum suction cup and a telescopic suction head, characterized in that: A lower vacuum suction cup is fixedly installed at the top center position of the base by inlaying, a support frame is fixedly welded to one side of the top of the base, a hydraulic device is provided at the top end of the support frame, an upper vacuum suction cup is provided at the end of the bottom hydraulic rod of the hydraulic device, a tensile pressure sensor is provided at the connection between the top center position of the upper vacuum suction cup and the hydraulic rod, a plurality of telescopic suction heads are provided at the bottom of the upper vacuum suction cup, the top end of the telescopic suction head extends to the interior of a contraction groove opened at the bottom end of the upper vacuum suction cup, and is slidably connected to the inner wall of the contraction groove, a second telescopic tube is provided at the top of the telescopic suction head, the second telescopic tube is provided in the interior of the contraction groove, and both ends are respectively connected to the telescopic suction head and the air pipe inside the upper vacuum suction cup in a sealed manner.

2. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 1, characterized in that: The inner walls on both sides of the shrinkage groove are provided with limiting grooves, and the two sides of the top of the telescopic suction head are provided with limiting blocks, and the limiting blocks extend into the interior of the limiting groove and are slidably connected with the inner wall thereof.

3. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 2, characterized in that: The inner wall surface of the limit groove is provided with a plurality of positioning grooves, a micro electric push rod is fixedly embedded inside the limit block, a positioning block is fixedly installed at the end of the micro electric push rod, and the length of the positioning block is greater than the depth of the positioning groove.

4. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 2, characterized in that: An ejection spring is arranged inside the limiting groove, and two ends of the ejection spring are respectively fixedly connected to the top wall of the limiting groove and the top of the limiting block.

5. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 1, characterized in that: A vacuum device is fixedly installed inside the base and on the inner side of the top of the support frame, and the vacuum device consists of a compressor and a vacuum pump. The upper vacuum suction cup is sealed and connected to the vacuum device on the inner side of the top of the support frame through a first telescopic tube, and the lower vacuum suction cup is sealed and connected to the vacuum device inside the base through a conduit.

6. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 1, characterized in that: A sealing gasket is provided at the bottom of the telescopic suction head. The sealing gasket is an annular structure and is fixedly mounted on the bottom outer ring of the telescopic suction head by gluing.

7. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 3, characterized in that: A stopper is fixedly mounted at the center of the top wall of the limiting groove, and the stopper is arranged at the inner top end of the ejection spring.

8. The tension and compression testing device for the carbon fiber end cap of the battery module according to claim 1, characterized in that: A control panel is arranged on one side of the top of the base, and the control panel is fixedly mounted on one side of the top wall of the base by means of inlaying.

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