High-precision suction gun
By setting up a blowing duct in front of the sniffer body and adjusting the airflow direction, the problem of inaccurate positioning of the battery pack leakage point is solved, and high-precision leakage point detection is achieved.
Patent Information
- Application Number
- CN202422220076.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the prior art, the leakage measurement gas escapes rapidly in the air, resulting in insufficient positioning of the leakage point of the battery pack.
A high-precision sniffer is designed, including a sniffer body, a leak-testing gas detection probe and an air blowing duct. The air blowing duct is located in front of the sniffer body, and the air flow direction forms an angle of 30-90° with the air flow direction of the sniffer body, which is used to blow away the sniffer body before detection.
By blowing away the evacuated gas, the leakage point on the battery pack is accurately positioned, which improves the accuracy of detection.
Smart Images
Figure CN223059418U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery pack sealing performance detection, and particularly relates to a high-precision suction gun. Background Art
[0002] With the rapid development of new energy vehicles, people have higher and higher requirements for the sealing and protection performance of power battery packs (i.e., PACKs). In some fields, the sealing performance of power battery packs needs to meet the protection requirements of IP67 or even IP68.
[0003] In order to detect whether the sealing performance of the battery pack meets the requirements, it is necessary to detect the sealing performance of the battery pack. In order to accurately locate the leakage part of the battery pack, in the prior art, a suction gun is used to move around the battery pack filled with leak detection gas to absorb the gas around each part of the battery pack while moving. When leak detection gas is detected at a certain part, it can indicate that there is a leak at that position of the battery pack, and the leak detection gas leaks from this leak point.
[0004] However, since the leak detection gas dissipates rapidly in the air, once the leak detection gas overflows from the leak point of the battery pack, it may dissipate to the periphery of the leak point, which will affect the determination of the position of the leak point on the battery pack and cannot accurately locate the leak point on the battery pack. Summary of the Utility Model
[0005] In order to solve the above technical problems, the utility model provides a high-precision suction gun, which can accurately locate the leak point on the battery pack.
[0006] The utility model provides a high-precision suction gun, which includes a suction gun body for absorbing gas, a leak detection gas detection probe for detecting leak detection gas, and a blowing channel for ejecting a non-leak detection gas flow. The leak detection gas detection probe is arranged on an air channel connected to the suction gun body. The suction gun body and the blowing channel are fixedly arranged with each other. In the advancing direction of the suction gun body, the blowing channel is located in front of the suction gun body.
[0007] Further, the flowing direction of the air flow blown out from the blowing channel is not parallel to the flowing direction of the air flow absorbed by the suction gun body.
[0008] Further, the air flow blown out from the blowing channel and the air flow absorbed by the suction gun body are in the same plane.
[0009] Further, the included angle between the flowing direction of the air flow blown out from the blowing channel and the flowing direction of the air flow absorbed by the suction gun body is 30-90°.
[0010] Further, the air blowing channel includes an air pipe and an air nozzle. The air nozzle includes a base and a ball head nozzle. The base is arranged at the end of the air pipe, and the ball head nozzle is rotatably arranged on the base around the axis of the base. The ball head nozzle is communicated with the base.
[0011] Further, the air pipe is a corrugated pipe.
[0012] Further, the high-precision suction gun further includes a robotic arm, and a fixing seat is arranged on the robotic arm. The suction gun body and the air blowing channel are both arranged on the fixing seat.
[0013] Further, the suction gun body includes a suction port and a suction pump. The suction pump is communicated with the suction port through the air channel, and the leak detection gas detection probe extends into the air channel.
[0014] Further, a flexible baffle and a brush are arranged at the suction port. The flexible baffle is arranged on both sides of the suction port, and the brush is arranged at one end of the flexible baffle away from the suction port.
[0015] In summary, in the present utility model, through the arrangement of the air blowing channel and making the air blowing channel be arranged in front of the suction gun body in the moving direction of the high-precision suction gun. Before absorbing the gas, the air blowing channel can blow away the original gas, so that the high-precision suction gun can more accurately locate the leak point on the battery pack.
[0016] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the drawings, details are described as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Shown is an axonometric structure schematic diagram of the high-precision suction gun provided by the embodiment of the present utility model.
[0018] Figure 2 Shown as Figure 1 the axonometric structure schematic diagram of the suction gun body and the air blowing channel in
[0019] Figure 3 Shown as Figure 2 the top view structure schematic diagram of the suction gun body and the air blowing channel in
[0020] Figure 4 Shown as Figure 3 the principle schematic diagram of the suction gun body and the air blowing channel when performing leak detection gas detection in
[0021] Figure 5The system block diagram of the suction gun body is shown as follows.
[0022] Figure 6 The structural schematic diagram of the air nozzle of the air blowing channel is shown as follows. Specific implementation manners
[0023] In order to further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will be described in detail with reference to the accompanying drawings and preferred embodiments.
[0024] The present utility model provides a high-precision suction gun, which can accurately locate the leakage points on the battery pack.
[0025] Figure 1 The axonometric structural schematic diagram of the high-precision suction gun provided by the embodiment of the present utility model is shown as follows. Figure 2 As shown Figure 1 The axonometric structural schematic diagram of the suction gun body and the air blowing channel in Figure 3 As shown Figure 2 The top view structural schematic diagram of the suction gun body and the air blowing channel in Figure 4 As shown Figure 3 The principle schematic diagram of the suction gun body and the air blowing channel when performing leak gas detection. Figure 5 The system block diagram of the suction gun body is shown as follows. As Figures 1 to 5 As shown, the high-precision suction gun provided by the embodiment of the present utility model includes a suction gun body 10 for absorbing gas, a leak gas detection probe 20 for detecting leak gas (see Figure 5 ), and an air blowing channel 30 for ejecting a non-leak gas air flow outward. The leak gas detection probe 20 is disposed on an air channel 11 connected to the suction gun body 10. The suction gun body 10 and the air blowing channel 30 are fixedly arranged with each other. In the forward direction of the suction gun body 10, the air blowing channel 30 is located in front of the suction gun body 10.
[0026] In this embodiment, when detecting the sealing performance of the battery pack, the suction gun body 10 can be moved to absorb the gas around each part of the battery pack 40 one by one. As Figure 4Move counterclockwise along the welding joint of the battery pack 40 to absorb the gas around the welding joint of the battery pack 40. When the suction gun body 10 moves, the gas in front of the suction gun body 10 can be purged through the air blowing channel 30. The airflow ejected from the air blowing channel 30 can blow away the original air in front of the suction gun body 10. At this time, before the suction gun body 10 moves to the leakage position, even if the leak detection gas has escaped to the periphery of the leak point of the battery pack 40, the airflow blown out by the air blowing channel 30 can also carry away the leak detection gas that originally escaped into the air. When the leak detection gas detection probe 20 still detects the existence of leak detection gas in the airflow absorbed from the suction gun body 10, it can be accurately determined that the current position of the suction gun body 10 is the position where the battery pack 40 has a leak point, eliminating the influence of the originally escaped leak detection gas on the detection result. This high-precision suction gun can accurately locate the leak point on the battery pack 40.
[0027] Further, the high-precision suction gun further includes a robotic arm 50. The robotic arm 50 can be used to drive the suction gun body 10 and the air blowing channel 30 to move. A fixed seat 51 is provided on the robotic arm 50, and the above-mentioned suction gun body 10 and air blowing channel 30 are both arranged on the fixed seat 51.
[0028] Further, please continue to refer to Figure 2 、 Figure 3 and Figure 5 , the suction gun body 10 includes a suction port 12 and a suction pump 13. The suction pump 13 is communicated with the suction port 12 through an air duct 11. The leak detection gas detection probe 20 extends into the air duct 11 to detect the airflow absorbed in the air duct 11.
[0029] A flexible baffle 14 and a brush 15 are further provided at the suction port 12. The flexible baffle 14 is arranged on both sides of the suction port 12, and the brush 15 is arranged at one end of the flexible baffle 14 away from the suction port 12. Through the arrangement of the flexible baffle 14, on the one hand, it can block the gas around the battery pack 40, so that the suction port 12 can more accurately absorb the air around a certain part of the battery pack 40, which is beneficial to the subsequent determination of the leakage part of the battery pack 40; on the other hand, it can also enable the suction gun body 10 to prevent damage to the battery pack 40 during movement on the premise of being as close as possible to the battery pack 40. Through the arrangement of the brush 15, the battery pack 40 can be cleaned to prevent the attachments on the battery pack 40 from interfering with the sealing performance of the battery pack 40.
[0030] Please continue to refer to Figures 2 to 4 , the flow direction of the airflow blown out from the air blowing channel 30 is not parallel to the flow direction of the airflow absorbed by the suction gun body 10. Preferably, the airflow blown out from the air blowing channel 30 and the airflow absorbed by the suction gun body 10 are located in the same plane. More preferably, as Figure 3As shown, an included angle is formed between the flow direction of the air flow blown out from the air blowing channel 30 and the flow direction of the air flow absorbed by the suction gun body 10 (see Figure 3 α in
[0031] Figure 6 ), and the range of this included angle is 30 - 90°. Figure 2 、 Figure 3 and Figure 6 As shown, the air blowing channel 30 includes an air pipe 31 and an air nozzle 32. The air nozzle 32 includes a base 321 and a ball head nozzle 322. The air pipe 31 is fixed on the fixing seat 51. The base 321 is arranged at the end of the air pipe 31. The ball head nozzle 322 is rotatably arranged on the base 321 around the axis of the base 321, and the ball head nozzle 322 is communicated with the air pipe 31. Through the arrangement of the ball head nozzle 322, it is possible to facilitate the adjustment of the air flow direction in the air blowing channel 30.
[0032] Furthermore, the air pipe 31 can be a corrugated pipe to change the bending degree of the air pipe 31 and the orientation of the air nozzle 32.
[0033] In summary, in the present utility model, through the arrangement of the air blowing channel 30 and making the air blowing channel 30 be arranged in front of the suction gun body 10 in the movement direction of the high-precision suction gun. Before absorbing the gas, the air blowing channel 30 can blow away the original gas, so that the high-precision suction gun can more accurately locate the leakage point on the battery pack 40.
[0034] The above is only a preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications to the above-disclosed technical content to be equivalent change equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A high-precision suction gun, characterized in that: It includes a suction gun body for absorbing gas, a leak detection gas detection probe for detecting leak detection gas, and a blowing airway for ejecting an air stream of non-leak detection gas outward. The leak detection gas detection probe is arranged on an airway connected to the suction gun body. The suction gun body and the blowing airway are fixedly arranged with each other. In the advancing direction of the suction gun body, the blowing airway is located in front of the suction gun body.
2. The high-precision suction gun according to claim 1, characterized in that: The flowing direction of the air stream blown out from the blowing airway is not parallel to the flowing direction of the air stream absorbed by the suction gun body.
3. The high-precision suction gun according to claim 2, characterized in that: The air stream blown out from the blowing airway and the air stream absorbed by the suction gun body are in the same plane.
4. The high-precision suction gun according to claim 2, characterized in that: The included angle between the flowing direction of the air stream blown out from the blowing airway and the flowing direction of the air stream absorbed by the suction gun body is 30-90°.
5. The high-precision suction gun according to claim 1, characterized in that: The blowing airway includes a trachea and a nozzle. The nozzle includes a base and a ball head nozzle. The base is arranged at the end of the trachea. The ball head nozzle is rotatably arranged on the base around the axis of the base. The ball head nozzle is communicated with the base.
6. The high-precision suction gun according to claim 5, characterized in that: The trachea is a corrugated pipe.
7. The high-precision suction gun according to claim 1, wherein: This high-precision suction gun further includes a robotic arm. A fixing seat is arranged on the robotic arm. The suction gun body and the blowing airway are both arranged on the fixing seat.
8. The high-precision suction gun according to claim 1, wherein: The suction gun body includes a suction port and a suction pump. The suction pump is communicated with the suction port through the airway. The leak detection gas detection probe extends into the airway.
9. The high-precision suction gun according to claim 8, wherein: A flexible baffle and a brush are arranged at the suction port. The flexible baffle is arranged on both sides of the suction port. The brush is arranged at one end of the flexible baffle away from the suction port.