A kind of automobile battery box shell air tightness detection device
Patent Information
- Application Number
- CN202521393773.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-07-04
AI Technical Summary
[0003]现有的对汽车电池盒外壳气密性进行检测的装置，一般是将汽车电池盒外壳放入水中，然后通过人工施加压力，并进行观察是否有气泡产生，以此判断检测汽车电池盒外壳的气密性，由于是通过人工进行观察检测，利用操作人员的观察和经验得出结论，进而检测不够准确，无法具体检测出汽车电池盒外壳的气密性，因此，可做进一步改善
该汽车电池盒外壳气密性检测装置，通过电动伸缩杆会带动底板向下移动，进而会将充气头向下插入进气管内，再通过开启充气泵即会沿着软管以及充气头向电池盒外壳内进行充气加压，通过内部的压力传感器实时检测压力，并通过外置显示屏进行线型显示，从而根据线型的波动情况即可检测出电池和外壳的气密性。
Smart Images
Figure CN224802615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery box testing technology, specifically to a device for testing the airtightness of an automotive battery box casing. Background Technology
[0002] With the development of electric vehicles, the power battery pack, as the core component of pure electric vehicles, has become increasingly important in terms of safety, which directly affects the safety of the entire vehicle. The design requirements for the strength, rigidity, heat dissipation, waterproofing, and insulation of the battery box are very high, so the design and sealing test of the battery box are crucial.
[0003] Existing devices for testing the airtightness of automotive battery box casings typically involve immersing the casing in water, applying pressure manually, and observing for the formation of bubbles to determine airtightness. However, since this test relies on manual observation and the operator's experience, it is not accurate enough to accurately determine the airtightness of the battery box casing. Therefore, further improvements are needed. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides the following technical solution: an airtightness testing device for an automotive battery box casing, comprising a frame and a battery box body placed at the top center of the frame. An elastic positioning component for positioning the battery box body is provided on the east side of the frame, located on the battery box body. A bracket is fixedly installed at the center of the back of the frame. Two sets of limiting sleeves are symmetrically fixedly installed on the top of the bracket. A pressure detection component for pressurizing the battery box body is provided on the top of the bracket. An air intake pipe is fixedly installed on the top of the battery box body. A pressure sensor is installed inside the battery box body. A display screen connected to the pressure sensor signal is also provided on the outside of the frame.
[0005] As an optimization, the elastic positioning component includes a support fixedly installed on the top side of the frame, an electric push rod fixedly installed in the middle of the support, a push plate fixedly installed at the telescopic end of the electric push rod, a clamping plate provided on the side of the push plate facing away from the support, and a buffer provided between the push plate and the clamping plate.
[0006] As an optimization, the buffer component consists of connecting rods fixedly installed at the four corners of the clamping plate and buffer springs sleeved on its outer side, with the connecting rods slidably inserted into the four corners of the push plate and the buffer springs fixedly installed between the push plate and the clamping plate.
[0007] As an optimization, the pressurization detection component includes an air pump fixedly installed on the top of the bracket and an electric telescopic rod. A base plate is fixedly installed at the bottom telescopic end of the electric telescopic rod. An inflation head is fixedly installed on both sides of the base plate on the electric telescopic rod. A hose is inserted into the air outlet of the air pump, and the hose and the inflation head are connected.
[0008] As an optimization, a retractable corrugated tube is connected between the inflation head and the hose. The corrugated tube is compressed or stretched by raising and lowering the base plate, which facilitates the insertion and removal of the inflation head.
[0009] As an optimization, two guide rods are fixedly installed on the top of the base plate and on the outermost side of the corrugated pipe. The guide rods are slidably inserted into the limiting sleeve and slide inside the limiting sleeve to guide and limit movement.
[0010] As an optimization, three sets of rubber rings are fitted on the outer side of the inflation head, and the inner wall of the air inlet pipe is provided with grooves corresponding to the rubber rings, and the rubber rings are fitted into the grooves. A sealing ring is fixedly installed on the top outer side of the inflation head, and the sealing ring is fitted on the top of the air inlet pipe.
[0011] The beneficial effects of this utility model are: This car battery box casing airtightness detection device uses an electric telescopic rod to move the base plate downwards, which in turn inserts the inflation head into the air intake pipe. Then, by turning on the inflation pump, air is injected and pressurized into the battery box casing along the hose and the inflation head. The pressure is detected in real time by an internal pressure sensor and displayed linearly on an external display screen. The airtightness of the battery and casing can be detected by observing the fluctuation of the linear pattern.
[0012] This automotive battery box housing airtightness testing device works by inserting an inflation head into the air intake pipe, which causes the rubber ring to be embedded in the groove and in close contact with its inner wall, thus improving the sealing performance. At the same time, by fitting a sealing ring on the top of the air intake pipe, the outer wall of the top of the air intake pipe is in close contact with the inner wall of the sealing ring, which further improves the sealing performance and minimizes the risk of air leakage at the connection point affecting the testing accuracy. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the elastic positioning structure of this utility model; Figure 3 This is a schematic diagram of the pressure detection structure of this utility model; Figure 4 This is a schematic diagram of the sealing structure of this utility model.
[0014] In the diagram: 1. Frame; 2. Battery box body; 3. Elastic positioning component; 4. Bracket; 5. Limiting sleeve; 6. Pressure detection component; 7. Air inlet pipe; 8. Support; 9. Electric push rod; 10. Push plate; 11. Clamping plate; 12. Connecting rod; 13. Buffer spring; 14. Air pump; 15. Electric telescopic rod; 16. Base plate; 17. Inflation head; 18. Hose; 19. Corrugated pipe; 20. Guide rod; 21. Rubber ring; 22. Groove; 23. Sealing ring. Detailed Implementation
[0015] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0016] 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.
[0017] Please see Figure 1 An airtightness testing device for an automotive battery box casing includes a frame 1 and a battery box body 2 placed at the top center of the frame 1. An elastic positioning component 3 for positioning the battery box body 2 is provided on the east side of the frame 1 and located at the battery box body 2. A bracket 4 is fixedly installed at the center of the back of the frame 1. Two sets of limiting sleeves 5 are symmetrically fixedly installed on the top of the bracket 4. A pressurization detection component 6 for pressurizing the inside of the battery box body 2 is provided on the top of the battery box body 2. An air inlet pipe 7 is fixedly installed on the top of the battery box body 2. A pressure sensor is provided inside the battery box body 2. A display screen connected to the pressure sensor signal is also provided on the outside of the frame 1. The battery box body 2 is positioned by the elastic positioning component 3 to prevent it from shifting from its original position during testing and affecting the test results. Then, air is supplied to pressurize the battery box body 2 through the pressurization detection component 6. At the same time, the pressure is detected in real time by the pressure sensor, and the pressure change curve is displayed in real time on the display screen. The operator observes the trend of the curve change to judge the airtightness. Please see Figure 2The elastic positioning component 3 includes a support 8 fixedly installed on the top side of the frame 1. An electric push rod 9 is fixedly installed in the middle of the support 8. A push plate 10 is fixedly installed at the telescopic end of the electric push rod 9. A clamping plate 11 is provided on the side of the push plate 10 facing away from the support 8. A buffer is provided between the push plate 10 and the clamping plate 11. By activating the electric push rod 9, the push plate 10 will be pushed closer to the battery box body 2, and the clamping plate 11 will first contact the battery box shell. Then, the buffer will first buffer the pressure, so that the battery box shell is elastically squeezed and positioned to avoid damage to the battery box shell due to excessive pressure. Please see Figure 2 The buffer consists of connecting rods 12 fixedly installed at the four corners of the clamping plate 11 and buffer springs 13 sleeved on its outer side. The connecting rods 12 are slidably inserted into the four corners of the push plate 10, and the buffer springs 13 are fixedly installed between the push plate 10 and the clamping plate 11. Please see Figure 3-4 The pressurization detection component 6 includes an air pump 14 and an electric telescopic rod 15 fixedly installed on the top of the bracket 4. A base plate 16 is fixedly installed at the bottom telescopic end of the electric telescopic rod 15. An inflation head 17 is fixedly installed on both sides of the base plate 16. A hose 18 is inserted into the air outlet of the air pump 14, and the hose 18 and the inflation head 17 are connected. By starting the electric telescopic rod 15, the base plate 16 will move downward, which will then insert the inflation head 17 downward into the air inlet pipe 7. After that, the air pump 14 can be started to pressurize the battery box shell along the hose 18 and the inflation head 17. Please see Figure 3-4 A retractable corrugated tube 19, made of stainless steel, is connected between the inflation head 17 and the hose 18. The corrugated tube 19 is compressed or stretched by the lifting of the base plate 16, which makes it easy to insert and remove the inflation head 17. Please see Figure 3-4 Two guide rods 20 are fixedly installed on the top of the base plate 16 and on the outermost side of the corrugated pipe 19. The guide rods 20 are slidably inserted into the limiting sleeve 5. The guide rods 20 slide inside the limiting sleeve 5 to play a guiding and limiting role. Please see Figure 3-4 The inflation head 17 is fitted with three sets of rubber rings 21 on its outer side. The inner wall of the air inlet pipe 7 is provided with grooves 22 corresponding to the rubber rings 21, and the rubber rings 21 are fitted into the grooves 22. A sealing ring 23 is fixedly installed on the top outer side of the inflation head 17, and the sealing ring 23 is fitted onto the top of the air inlet pipe 7. The rubber rings 21 are fitted into the grooves 22 and in close contact with their inner walls, which can improve the sealing performance. At the same time, the sealing ring 23 is tightly fitted onto the top of the air inlet pipe 7, which further improves the sealing performance.
[0018] When in use, first place the battery box in the middle of the frame 1, then start the electric push rod 9 to push the push plate 10 close to the battery box body 2, and make the clamping plate 11 contact the battery box shell first, which will compress the buffer spring 13, so it will play a buffering role, and make the battery box shell elastically squeezed and positioned to avoid damage to the battery box shell due to excessive pressure. Then, the electric telescopic rod 15 can be activated to move the base plate 16 downward, which will insert the inflation head 17 downward into the air inlet pipe 7. Then, the air pump 14 can be turned on to inflate and pressurize the battery box shell along the hose 18 and the inflation head 17. The pressure is detected in real time by the internal pressure sensor and displayed linearly on the external display screen. Therefore, the airtightness of the battery and the shell can be detected by the fluctuation of the linear pattern.
[0019] In summary, the airtightness detection device for the car battery box casing uses an electric telescopic rod 15 to move the base plate 16 downwards, which in turn inserts the inflation head 17 into the air intake pipe 7. Then, by turning on the inflation pump 14, air is injected and pressurized into the battery box casing along the hose 18 and the inflation head 17. The pressure is detected in real time by an internal pressure sensor and displayed linearly on an external display screen. The airtightness of the battery and casing can be detected by observing the fluctuation of the linear pattern. By inserting the inflation head 17 into the air intake pipe 7, the rubber ring 21 will be embedded in the groove 22 and in close contact with its inner wall, thus improving the sealing performance. At the same time, by fitting the sealing ring 23 onto the top of the air intake pipe 7, the outer wall of the top of the air intake pipe 7 will be in close contact with the inner wall of the sealing ring 23, thereby further improving the sealing performance and minimizing the risk of air leakage at the connection point affecting the detection accuracy.
[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.
[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A device for testing the airtightness of an automotive battery box casing, comprising a frame (1) and a battery box body (2) placed in the middle of the top side of the frame (1), characterized in that: An elastic positioning component (3) for positioning the battery box body (2) is provided on the east side of the frame (1) and located on the battery box body (2). A bracket (4) is fixedly installed in the middle of the back of the frame (1). Two sets of limiting sleeves (5) are symmetrically fixedly installed on the top of the bracket (4). A pressure detection component (6) for pressurizing the battery box body (2) is provided on the top of the bracket (4). An air inlet pipe (7) is fixedly installed on the top of the battery box body (2). A pressure sensor is provided inside the battery box body (2). A display screen connected to the pressure sensor signal is also provided on the outside of the frame (1). The pressurization detection assembly (6) includes an air pump (14) fixedly installed on the top of the bracket (4) and an electric telescopic rod (15). A base plate (16) is fixedly installed at the bottom telescopic end of the electric telescopic rod (15). An air inflator (17) is fixedly installed on both sides of the base plate (16). A hose (18) is inserted into the air outlet of the air pump (14), and the hose (18) and the air inflator (17) are connected. The inflation head (17) is fitted with three sets of rubber rings (21) on its outer side. The inner wall of the air inlet pipe (7) is provided with a groove (22) corresponding to the rubber rings (21), and the rubber rings (21) are fitted into the grooves (22). A sealing ring (23) is fixedly installed on the top outer side of the inflation head (17), and the sealing ring (23) is fitted on the top of the air inlet pipe (7).
2. The automotive battery box housing airtightness testing device according to claim 1, characterized in that: The elastic positioning component (3) includes a support (8) fixedly installed on the top side of the frame (1). An electric push rod (9) is fixedly installed in the middle of the support (8). A push plate (10) is fixedly installed at the telescopic end of the electric push rod (9). A clamping plate (11) is provided on the side of the push plate (10) facing away from the support (8). A buffer is provided between the push plate (10) and the clamping plate (11).
3. The automotive battery box housing airtightness testing device according to claim 2, characterized in that: The buffer is a connecting rod (12) fixedly installed at the four corners of the clamping plate (11) and a buffer spring (13) sleeved on its outside. The connecting rod (12) is slidably inserted into the four corners of the push plate (10), and the buffer spring (13) is fixedly installed between the push plate (10) and the clamping plate (11).
4. The automotive battery box housing airtightness testing device according to claim 1, characterized in that: A retractable corrugated tube (19) is connected between the inflation head (17) and the hose (18).
5. The automotive battery box housing airtightness testing device according to claim 4, characterized in that: Two guide rods (20) are fixedly installed on the top of the base plate (16) and on the outermost side of the corrugated pipe (19). The guide rods (20) are slidably inserted into the limiting sleeve (5). The guide rods (20) slide inside the limiting sleeve (5) to play a guiding and limiting role.