New energy automobile battery airtightness detection device

Abstract

The utility model discloses a new energy automobile battery airtightness detection device, which relates to the technical field of automobile manufacturing and comprises a detection box body, a support frame, a battery limiting frame, a pressure sensor and a limiting assembly. The battery limiting frame comprises a fixed bottom plate used for bearing a battery and a magnetic top cover which is attracted by the top end of the fixed bottom plate through magnetic force of a permanent magnet block, the bottom of the fixed bottom plate is in lap joint with a movable bearing block, and supporting blocks used for bearing the fixed bottom plate are arranged on the two sides of the movable bearing block. A rack guide sliding groove is formed in one side of the fixed bottom plate. According to the utility model, through cooperative use of the battery limiting frame, the limiting assembly, the limiting clamping plate, the movable rack, the movable bearing block and the lifting hydraulic rod, omnibearing fixed-point limitation can be formed during air tightness detection of an automobile battery, so that the detection effect is ensured, deformation of an automobile battery shell is avoided, and the detection efficiency is improved. And the use is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, and in particular to an air tightness detection device for a battery of a new energy automobile. Background Art

[0002] Lithium batteries are one of the most commonly used battery types in electric vehicles. Due to their high energy density and long cycle life, they have quickly occupied most of the electric vehicle battery market. Therefore, the performance of lithium batteries affects the overall performance of electric vehicles. In the lithium battery industry, if the product is poorly sealed, it will lead to serious consequences such as serious degradation of battery performance, electrolyte leakage, battery swelling and even explosion, which seriously affects the service life and safety of lithium-ion batteries.

[0003] During the production and processing of new energy vehicle battery shells, testing instruments are needed to test the air tightness of the battery shells. In the existing air tightness test of new energy vehicle battery shells, the air pressure is often increased inside the new energy vehicle battery shells and then the new energy vehicle battery shells are placed in water to observe whether bubbles are generated in the water to judge the air tightness of the new energy vehicle battery shells. This method will cause the new energy vehicle battery shells to deform when pressurizing the inside of the new energy vehicle battery shells, thereby affecting their use. Utility Model Content

[0004] The purpose of the utility model is to provide a new energy vehicle battery air tightness detection device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A new energy vehicle battery air tightness detection device comprises a detection box, a support frame, a battery limit frame, a pressure sensor and a limit assembly. The battery limit frame comprises a fixed bottom plate for supporting the battery and a magnetic top cover whose top is magnetically adsorbed by a permanent magnet block.

[0007] A movable receiving block is overlapped at the bottom of the fixed base plate, and support blocks for receiving the fixed base plate are arranged on both sides of the movable receiving block, a rack guide slot is opened on one side of the fixed base plate, and a movable rack is slidably connected to the inner wall of the rack guide slot, and a gear is meshed on one side of the movable rack, and a card plate rack located on one side of the movable rack is meshed on the outer wall of the gear, and the upper surface of the card plate rack is fixedly connected to a limiting card plate.

[0008] The limiting assembly includes a clamping and fixing plate arranged inside the detection box body and a transverse groove opened on one side of the clamping and fixing plate, and the pressure sensor is located on one side of the clamping and fixing plate.

[0009] A further improvement of the technical solution of the utility model is that: a positioning groove for the lateral sliding of the card plate rack is opened on the inner wall of the detection box, and the top end of the limit card plate is overlapped with the upper surface of the magnetic top cover through an auxiliary block.

[0010] A further improvement of the technical solution of the utility model is that the gear is rotatably connected to the inner wall of the detection box through a connecting rod.

[0011] A further improvement of the technical solution of the utility model is that the bottom end of the support block is fixedly connected to the bottom of the inner wall of the support frame, and the side surface of the movable receiving block is slidably connected to the side surface of the support block.

[0012] A further improvement of the technical solution of the utility model is that a lifting hydraulic rod is fixedly connected to the center of the bottom surface of the movable receiving block, and the two ends of the movable receiving block are fixedly connected to the outer wall of the movable rack.

[0013] A further improvement of the technical solution of the utility model is that: the number of the clamping fixing plates is four groups, the four groups of the clamping fixing plates are symmetrically distributed around the fixed base plate, the side of the clamping fixing plate away from the fixed base plate is fixedly connected with an H-shaped reinforcement plate, and the center of one side of the H-shaped reinforcement plate is fixedly connected with a clamping hydraulic rod.

[0014] A further improvement of the technical solution of the utility model is that: a side of the limiting clamping plate close to the fixed base plate overlaps a side of the clamping fixing plate away from the fixed base plate, and a spring column is fixedly connected to the center of one side of the limiting clamping plate.

[0015] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0016] 1. The utility model provides a new energy vehicle battery air tightness detection device, which utilizes the coordinated use of a battery limit frame, a limit assembly, a limit card plate, a movable rack, a movable receiving block and a lifting hydraulic rod, so that when the vehicle battery is subjected to air tightness detection, a full range of fixed-point restrictions can be formed, thereby ensuring the detection effect and avoiding the problem that the vehicle battery shell is deformed and affects the use.

[0017] 2. The utility model provides a new energy vehicle battery air tightness detection device, which utilizes the coordinated use of a fixed bottom plate, a magnetic top cover, a rack guide slide groove and a movable rack, so that the fixed bottom plate can always remain in a vertical state while moving downward, thereby enabling the vehicle battery to be better limited and fixed during subsequent detection processes, thereby improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the detection box structure details of the utility model;

[0020] Figure 3 This is a schematic diagram of the limit card structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the battery limit frame structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the limit assembly of the utility model.

[0023] In the figure: 1. Detection box; 2. Support frame; 3. Battery limit frame; 4. Support block; 5. Limit assembly; 6. Moving rack; 7. Gear; 8. Moving receiving block; 9. Limiting card plate; 10. Card plate rack; 11. Fixed bottom plate; 12. Magnetic top cover; 13. Rack guide slide; 14. Lifting hydraulic rod; 15. Clamping fixed plate; 16. Horizontal groove; 17. Clamping hydraulic rod; 18. Pressure sensor; 19. H-shaped reinforcement plate. DETAILED DESCRIPTION

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The present invention is further described in detail below in conjunction with the embodiments:

[0026] Example 1

[0027] like Figures 1-5 As shown, the utility model provides a new energy vehicle battery air tightness detection device, including a detection box 1, a support frame 2, a battery limit frame 3, a pressure sensor 18 and a limit assembly 5, the battery limit frame 3 includes a fixed bottom plate 11 for supporting the battery and a magnetic top cover 12 whose top end is magnetically adsorbed by a permanent magnet block.

[0028] A movable receiving block 8 is overlapped at the bottom of the fixed base plate 11, and support blocks 4 for receiving the fixed base plate 11 are arranged on both sides of the movable receiving block 8. A rack guide groove 13 is opened on one side of the fixed base plate 11, and the inner wall of the rack guide groove 13 is slidably connected with a movable rack 6, and a gear 7 is meshed on one side of the movable rack 6. The outer wall of the gear 7 is meshed with a card plate rack 10 located on one side of the movable rack 6, and the upper surface of the card plate rack 10 is fixedly connected with a limiting card plate 9.

[0029] The limit assembly 5 includes a clamping plate 15 disposed inside the detection box 1 and a transverse groove 16 opened on one side of the clamping plate 15. The pressure sensor 18 is located on one side of the clamping plate 15. When the clamping hydraulic rod 17 pushes the clamping plate 15 to fit close to the car battery, the position of the transverse groove 16 is just located at the connection gap of the car battery shell. When the air tightness of the car battery shell is tested later, the shell connection will not be affected by the squeezing of the clamping plate 15, avoiding affecting the accuracy of the air tightness test.

[0030] After the clamping plate 15 is attached to the automobile battery shell, the clamping plate 15 constantly monitors the pressure value between the shell and the clamping plate 15, thereby simulating the squeezing force on the battery shell mounting structure when the shell expands in combination with the input internal air pressure of the shell.

[0031] The inner wall of the detection box body 1 is provided with a positioning groove for the card rack 10 to slide horizontally, and the top end of the limit card plate 9 is overlapped with the upper surface of the magnetic top cover 12 through an auxiliary block.

[0032] Example 2

[0033] like Figures 1-5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the gear 7 is rotatably connected to the inner wall of the detection box 1 through a connecting rod. The bottom end of the support block 4 is fixedly connected to the bottom of the inner wall of the support frame 2, and the side of the movable receiving block 8 is slidably connected to the side of the support block 4.

[0034] A lifting hydraulic rod 14 is fixedly connected to the center of the bottom surface of the movable receiving block 8 , and both ends of the movable receiving block 8 are fixedly connected to the outer wall of the movable rack 6 .

[0035] There are four groups of clamping fixing plates 15, which are symmetrically distributed around the fixed base plate 11. An H-shaped reinforcement plate 19 is fixedly connected to one side of the clamping fixing plate 15 away from the fixed base plate 11, and a clamping hydraulic rod 17 is fixedly connected to the center of one side of the H-shaped reinforcement plate 19.

[0036] One side of the limiting clamping plate 9 close to the fixed bottom plate 11 overlaps with one side of the clamping fixing plate 15 away from the fixed bottom plate 11 , and a spring column is fixedly connected to the center of one side of the limiting clamping plate 9 .

[0037] The following is a detailed description of the working principle of the new energy vehicle battery air tightness detection device.

[0038] like Figures 1-5 As shown, the magnetic top cover 12 is removed, and then the car battery is placed in the fixed bottom plate 11, and the magnetic top cover 12 is reset. Then the lifting hydraulic rod 14 starts to move downward. At this time, the fixed bottom plate 11 moves downward with the car battery under the action of gravity. When the bottom surface of the fixed bottom plate 11 moves to a position overlapping with the top of the support block 4, the bottom end position of the moving rack 6 just forms a meshing state with the gear 7. Then the lifting hydraulic rod 14 pulls the moving receiving block 8 to continue to move downward. At this time, the fixed bottom plate 11 remains stationary under the support of the support block 4, and the clamping hydraulic rod 17 is started to push the clamping plate 15 to approach the outer wall of the battery and clamp it.

[0039] When the moving receiving block 8 continues to move downward, it will drive the moving rack 6 to move downward, and the moving rack 6 will drive the gear 7 to rotate counterclockwise through the teeth during the downward movement. When the gear 7 rotates counterclockwise, it will drive the card plate rack 10 to approach the fixed bottom plate 11, and the card plate rack 10 will drive the limiting card plate 9 to approach the fixed bottom plate 11 and stretch the spring column. When the lifting hydraulic rod 14 pulls the moving receiving block 8 to move downward to the maximum position, the limiting card plate 9 just fits with the side of the fixed bottom plate 11, and at the same time, the top of the limiting card plate 9 fixes the magnetic top cover 12 to the top of the fixed bottom plate 11 through the auxiliary block to ensure that the position of the car battery inside the fixed bottom plate 11 will not shift.

[0040] After the automobile battery shell is fixed, ventilation can be conducted inside the shell for air tightness testing. During the testing process, the cooperation between the battery limit frame 3 and the limit assembly 5 ensures the fixed limit state of the battery shell, thereby preventing deformation after ventilation, which may affect subsequent use.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An airtightness detection device for a new energy vehicle battery, comprising a detection box body (1), a support frame (2), a battery limiting frame (3), a pressure sensor (18) and a limiting component (5), characterized in that: The battery limiting frame (3) comprises a fixed bottom plate (11) for supporting the battery and a magnetic top cover (12) on the top of the fixed bottom plate (11) which is magnetically attracted by a permanent magnet block; The bottom of the fixed base plate (11) is overlapped with a movable receiving block (8), and support blocks (4) for receiving the fixed base plate (11) are arranged on both sides of the movable receiving block (8); a rack guide slot (13) is provided on one side of the fixed base plate (11), and a movable rack (6) is slidably connected to the inner wall of the rack guide slot (13); a gear (7) is meshed on one side of the movable rack (6), and a card plate rack (10) located on one side of the movable rack (6) is meshed on the outer wall of the gear (7); and a limit card plate (9) is fixedly connected to the upper surface of the card plate rack (10); The limit assembly (5) comprises a clamping plate (15) arranged inside the detection box (1) and a transverse groove (16) opened on one side of the clamping plate (15), and the pressure sensor (18) is located on one side of the clamping plate (15).

2. The airtightness detection device for a new energy vehicle battery according to claim 1, wherein: The inner wall of the detection box (1) is provided with a positioning groove for the card rack (10) to slide laterally, and the top end of the limit card (9) is overlapped with the upper surface of the magnetic top cover (12) through an auxiliary block.

3. An airtightness detection device for a new energy vehicle battery according to claim 1, characterized in that: The gear (7) is rotatably connected to the inner wall of the detection box (1) via a connecting rod.

4. The airtightness detection device for a new energy vehicle battery according to claim 1, wherein: The bottom end of the support block (4) is fixedly connected to the bottom of the inner wall of the support frame (2), and the side surface of the movable receiving block (8) is slidably connected to the side surface of the support block (4).

5. The airtightness detection device for a new energy vehicle battery according to claim 1, wherein: A lifting hydraulic rod (14) is fixedly connected to the center of the bottom surface of the movable receiving block (8), and both ends of the movable receiving block (8) are fixedly connected to the outer wall of the movable rack (6).

6. The airtightness detection device for a new energy vehicle battery according to claim 1, wherein: The number of the clamping fixing plates (15) is four groups, and the four groups of the clamping fixing plates (15) are symmetrically distributed around the fixed base plate (11). The side of the clamping fixing plates (15) away from the fixed base plate (11) is fixedly connected to an H-shaped reinforcement plate (19), and the center of one side of the H-shaped reinforcement plate (19) is fixedly connected to a clamping hydraulic rod (17).

7. The airtightness detection device for a new energy vehicle battery according to claim 1, characterized in that: A side of the limiting clamping plate (9) close to the fixed base plate (11) overlaps a side of the clamping fixing plate (15) away from the fixed base plate (11), and a spring column is fixedly connected at the center of one side of the limiting clamping plate (9).

Images