An inspection device and inspection method for the waterproof property of a HEV battery pack connector

Abstract

The present application relates to a device and a method for detecting the waterproofness of an HEV battery pack connector, and relates to the field of automobile battery technology; the device comprises a workbench for carrying a battery pack body and a connector body, the workbench is provided with a fixing assembly for fixing the battery pack body, the workbench is provided with a sealing cover for covering the connection portion between the battery pack body and the connector body, the workbench is provided with a pressing assembly for fixing the sealing cover on the battery pack body; the workbench is provided with an air supply member connected to the interior of the sealing cover for supplying air to the interior of the sealing cover; the workbench is provided with a detection assembly for detecting changes in the air pressure value inside the sealing cover; the present application has the effect of facilitating the detection of the waterproof performance of the connection portion between the battery pack body and the connector body.

Description

Technical Field

[0001] The present application relates to the technical field of automotive batteries, and in particular to a detection device and a detection method for the waterproof performance of a HEV battery pack connector. Background Art

[0002] HEV is an abbreviation for hybrid electric vehicle, which can simultaneously utilize the internal combustion engine of a traditional vehicle and the motor of a pure electric vehicle for hybrid drive, and the motor is powered by a HEV battery pack, thereby reducing the demand for fossil fuels.

[0003] The HEV battery pack contains electronic components inside. When the battery pack is used in an environment with high air humidity, water vapor and water droplets are likely to enter the inside of the battery pack, resulting in the short circuit and failure of internal electronic components or battery cells. Therefore, the waterproof performance of the battery pack is crucial.

[0004] The connector is the window for connecting the battery pack to external devices. One end of the connector is electrically connected to the battery pack, and the other end of the connector is used to connect to the metal insert of the external device. Therefore, the waterproof performance of the connection port between the connector and the battery pack is very important.

[0005] In view of the above related technologies, the inventors found that: in the actual production process, traditional connectors and battery packs usually adopt a mutually adapted connection structure, and it is inconvenient for inspectors to perform waterproof tests on the waterproof performance of the connection part between the battery pack and its connector, so there is room for improvement. Summary of the Invention

[0006] In order to improve the problem of inconvenient detection of the waterproof performance of the battery pack connector, the present application provides a detection device and a detection method for the waterproof performance of a HEV battery pack connector.

[0007] In a first aspect, a detection device for the waterproof performance of a HEV battery pack connector provided by the present application adopts the following technical solution:

[0008] A detection device for the waterproof performance of a HEV battery pack connector includes a workbench for carrying a battery pack body and a connector body. A fixing component for fixing the battery pack body is arranged on the workbench. A sealing cover for covering the connection part between the battery pack body and the connector body is arranged on the workbench. A pressing component is arranged on the workbench to fix the sealing cover on the battery pack body. An air supply component communicating with the inside of the sealing cover is arranged on the workbench to supply air to the inside of the sealing cover. A detection component is arranged on the workbench to detect the change in the air pressure value inside the sealing cover.

[0009] By adopting the above technical solution, the fixing component assists in fixing the battery pack body, facilitating the waterproofness detection of the battery pack body and the connector body; the pressing component stably presses and fixes the sealing cover at the connection part of the battery pack body and the connector body, and uses the air supply component to supply air to the inside of the sealing cover; finally, the detection component is used to observe the change of the air pressure value inside the sealing cover in real time. If the air pressure value significantly decreases, it indicates that the waterproof performance and airtightness of the connection part of the battery pack body and the connector body deviate; when the air pressure value tends to be stable, it indicates that the protection performance and airtightness of the connection part of the battery pack body and the connector body are good, thus realizing the convenient detection of the waterproof performance of the connection part of the battery pack body and the connector body.

[0010] Preferably, the fixing component includes a pushing member, a fixing plate and an anti-slip pad; the pushing member is arranged on the workbench, and the pushing members are distributed on both sides of the battery pack body relatively; the fixing plate is arranged at the output end of the pushing member, and the anti-slip pad is arranged on the side wall of the fixing plate facing the battery pack body for pressing the battery pack body.

[0011] By adopting the above technical solution, the output end of the pushing member drives the fixing plate and the anti-slip pad to move, and the fixing plate drives the anti-slip pad to press and fix the battery pack body. The anti-slip pad reduces the hard contact between the fixing plate and the battery pack body, and at the same time the anti-slip pad also increases the frictional resistance between the battery pack body and the fixing plate, facilitating the more stable fixing of the battery pack body by the fixing plate, and thus facilitating the subsequent sealing and fixing of the connection part of the battery pack body and the connector body by the sealing cover.

[0012] Preferably, the pressing component includes a mounting frame and a pressing member; the mounting frame is arranged on the workbench, the pressing member is arranged on the mounting frame, and the output end of the pressing member is connected to the sealing cover for driving the sealing cover to approach or move away from the battery pack body.

[0013] By adopting the above technical solution, the mounting frame hoists the pressing member and the sealing cover. By driving the output end of the pressing member to expand and contract, it is realized to drive the sealing cover to approach and cover the connection part of the battery pack body and the connector body, thus facilitating the detection of the airtightness of the connection part of the battery pack body and the connector body.

[0014] Preferably, the detection component includes an electromagnetic valve, a detector, a controller, and a display screen; the electromagnetic valve is communicatively connected between the output end of the air supply component and the sealing cover to control the communication state between the air supply component and the sealing cover; the detector is disposed on the sealing cover to detect the air pressure value inside the sealing cover; the controller is disposed on the workbench, and both the detector and the electromagnetic valve are controlled by the controller, and the controller is used to receive the air pressure value; the display screen is disposed on the controller and is controlled by the controller to display the air pressure value received by the controller.

[0015] By adopting the above technical solution, the detector detects the air pressure value inside the sealing cover in real time and transmits it to the display screen through the controller for display, so that the tester can quickly know the air pressure state inside the sealing cover; when the air pressure value inside the sealing cover reaches a certain value, the air supply component and the electromagnetic valve are closed, so that the sealing cover is in a theoretically sealed state; then, the change of the air pressure value inside the sealing cover is observed through the detector, so as to know the quality of the airtightness and waterproof performance of the connection part between the battery pack body and the connector body.

[0016] Preferably, a flexible sleeve for fitting the battery pack body is provided at the end of the sealing cover facing the workbench.

[0017] By adopting the above technical solution, the flexible sleeve increases the connection tightness between the sealing cover and the battery pack body, thereby improving the accuracy of detecting the airtightness and waterproof performance of the connection part between the battery pack body and the connector body.

[0018] Preferably, an air guide pipe communicating with the inside of the flexible sleeve is provided inside the sealing cover, and a pressurizing component is provided on the sealing cover to increase the internal pressure of the air guide pipe.

[0019] By adopting the above technical solution, the pressurizing component increases the internal pressure of the air guide pipe, causing the flexible sleeve to elastically expand, further improving the connection tightness between the sealing cover and the battery pack body, and thus further improving the accuracy of detecting the airtightness and waterproof performance of the connection part between the battery pack body and the connector body.

[0020] Preferably, the pressurizing component includes a pressurizing plug, a threaded block, and a driving frame; a communication pipe communicating with the air guide pipe is provided inside the sealing cover, and a pressurizing groove is provided on the side wall of the sealing cover facing away from the workbench for communicating with the communication pipe; the pressurizing plug is slidably disposed inside the pressurizing groove, and the pressurizing plug is adapted to the pressurizing groove; the threaded block is disposed on the side wall of the pressurizing plug facing away from the workbench, and the threaded block is threadedly connected to the inner side wall of the pressurizing groove; the driving frame is disposed on the side wall of the threaded block facing away from the pressurizing plug to drive the threaded block to rotate.

[0021] By adopting the above technical solution, the driving frame facilitates the inspector to drive the threaded block to rotate. By rotating the threaded block, the pressing plug moves along the depth direction of the pressing groove, and compresses the air inside the pressing groove, the connecting pipe and the air guide pipe, realizing the pressurization treatment of the inside of the air guide pipe, so as to facilitate the expansion of the flexible sleeve, and further improving the connection tightness between the sealing cover and the battery pack body.

[0022] Preferably, the cross-section of the flexible sleeve along its thickness direction is wavy.

[0023] By adopting the above technical solution, when the flexible sleeve is under pressure, it is convenient for the flexible sleeve to elastically extend along the wavy folds, reducing the phenomenon of the flexible sleeve expanding and bursting, and ensuring the stable expansion of the flexible sleeve.

[0024] Preferably, a plurality of groups of the air guide pipes are arranged at intervals along the circumferential direction of the sealing cover, and each group of the air guide pipes is communicated with the connecting pipe.

[0025] By adopting the above technical solution, the multiple groups of air guide pipes can simultaneously inflate and pressurize multiple positions of the flexible sleeve, making the force on each part of the flexible sleeve tend to be uniform, reducing the phenomenon that the pressure accumulates at one place of the flexible sleeve and then causes the flexible sleeve to burst, and ensuring the stable expansion of the flexible sleeve.

[0026] In a second aspect,

[0027] The present application provides a detection method for a detection device of the waterproof performance of an HEV battery pack connector, including the following steps:

[0028] Fixing: The fixing component assists in fixing the battery pack body and the connector body.

[0029] Sealing: The pressing component presses and fixes the sealing cover on the battery pack body to hermetically cover the connection part of the battery pack body and the connector body.

[0030] Air supply: The air supply component conveys gas into the sealing cover so that a certain air pressure value is available inside the sealing cover.

[0031] Detection: The detection component detects the change of the air pressure value inside the sealing cover in real time.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. By setting a fixing component to assist in fixing the battery pack body, a pressing component fixes the sealing cover to the connection part of the battery pack body and the connector body, and an air supply component supplies air to the inside of the sealing cover; finally, a detection component is used to observe the change of the air pressure value inside the sealing cover in real time, so as to realize the convenient detection of the waterproof performance of the connection part of the battery pack body and the connector body;

[0034] 2. By setting a flexible sleeve, the connection tightness between the sealing cover and the battery pack body is increased, thereby improving the accuracy of detecting the airtightness and waterproof performance of the connection part of the battery pack body and the connector body;

[0035] 3. By setting a pressurizing component to increase the pressure inside the air guide pipe, the flexible sleeve undergoes elastic expansion, further improving the connection tightness between the sealing cover and the battery pack body, and thus further improving the accuracy of detecting the airtightness and waterproof performance of the connection part of the battery pack body and the connector body. Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of a detection device and its detection method for the waterproofness of an HEV battery pack connector according to an embodiment of the present application.

[0037] Figure 2 is a cross-sectional schematic diagram for showing the internal structure of the sealing cover.

[0038] Description of the Reference Numerals:

[0039] 1. Workbench; 11. Battery pack body; 12. Connector body; 13. Air supply component; 2. Fixing component; 21. Pushing member; 22. Fixed plate; 23. Anti-slip pad; 3. Sealing cover; 31. Flexible sleeve; 32. Air guide pipe; 33. Connecting pipe; 34. Pressurizing groove; 4. Pressing component; 41. Mounting frame; 42. Pressing member; 5. Detection component; 51. Electric control valve; 52. Detection member; 53. Control member; 54. Display screen; 6. Pressurizing component; 61. Pressurizing plug; 62. Threaded block; 63. Driving frame. Detailed Embodiment

[0040] The following will be further described in detail with reference to the attached Figure 1-2 to further illustrate the present application.

[0041] An embodiment of the present application discloses a detection device and its detection method for the waterproofness of an HEV battery pack connector, so as to facilitate the detection of the waterproof performance of the connection part of the battery pack body and the connector body.

[0042] Refer to Figure 1 and Figure 2A device for testing the waterproofness of an HEV battery pack connector includes a workbench 1 for carrying a battery pack body 11 and a connector body 12. A fixing assembly 2 is installed on the workbench 1 to assist in fixing the battery pack body 11. A sealing cover 3 is installed on the workbench 1 to cover the connection portion between the battery pack body 11 and the connector body 12. An air supply component 13 is installed on the workbench 1. In this embodiment, the air supply component 13 is an air compressor. The output end of the air supply component 13 is connected to the interior of the sealing cover 3 through a hose, so that the output end of the air supply component 13 can transport air to the interior of the sealing cover 3.

[0043] Reference Figure 1 and Figure 2 , the fixing assembly 2 includes a pushing member 21, a fixing plate 22 and an anti-slip pad 23; in this embodiment, the pushing member 21 can be a pushing cylinder, and the anti-slip pad 23 can be made of rubber with a high friction coefficient. The pushing members 21 are relatively distributed on both sides of the width direction of the battery pack body 11, and each group of pushing members 21 is fixedly installed on the workbench 1 along the vertical direction. The fixing plate 22 is jointly fixed to the output ends of all the pushing members 21, and a space for the battery pack body 11 to be placed is reserved between the fixing plate 22 and the workbench 1. The anti-slip pad 23 is adhesively connected to the side wall of the fixing plate 22 facing the battery pack body 11, so as to be used to abut against the side wall of the battery pack body 11.

[0044] Reference Figure 1 and Figure 2 A pressing assembly 4 is mounted on the workbench 1 to force the sealing cover 3 to stably cover the connection between the battery pack body 11 and the connector body 12. The pressing assembly 4 includes a mounting bracket 41 and a pressing member 42. In this embodiment, the pressing member 42 can be a pressing cylinder. The mounting bracket 41 is fixedly connected to the workbench 1, and the pressing member 42 is fixedly connected to the mounting bracket 41. The output end of the pressing member 42 is fixedly connected to the side wall of the sealing cover 3 facing away from the battery pack body 11, thereby driving the sealing cover 3 toward or away from the battery pack body 11.

[0045] Reference Figure 1 and Figure 2 A detection assembly 5 is mounted on the workbench 1 for detecting changes in the air pressure inside the sealing cover 3. The detection assembly 5 includes an electrically controlled valve 51, a detection element 52, a control element 53, and a display screen 54. In this embodiment, the detection element 52 may be an air pressure detector, and the control element 53 may be a single-chip microcomputer controller. The electrically controlled valve 51, the detection element 52, and the display screen 54 are all electrically connected to the control element 53.

[0046] Reference Figure 1 and Figure 2, the electric control valve 51 is connected to a hose installed between the output end of the air supply member 13 and the sealing cover 3, so as to control the opening and closing state of the electric control valve 51 through the control member 53, thereby controlling the communication state between the air supply member 13 and the sealing cover 3. The detection member 52 is installed on the sealing cover 3, and the detection member 52 is in communication with the inside of the sealing cover 3 to detect the air pressure value inside the sealing cover 3 and transmit the air pressure value to the control member 53.

[0047] Referring to Figure 1 and Figure 2 , the control member 53 is installed on the workbench 1 for receiving the air pressure value. The display screen 54 is installed on the control member 53. The control member 53 sends the air pressure value to the display screen 54. The display screen 54 receives the air pressure value and displays it, so as to facilitate the detection personnel to know the change situation of the air pressure value inside the sealing cover 3 in real time.

[0048] Referring to Figure 1 and Figure 2 , a flexible sleeve 31 is adhesively fixed along the circumferential direction of the end of the sealing cover 3 facing the workbench 1 for fitting with the side wall of the battery pack body 11. In this embodiment, the flexible sleeve 31 is made of rubber with a soft texture and easy to deform, and the cross-section of the flexible sleeve 31 along the thickness direction is wavy.

[0049] Referring to Figure 1 and Figure 2 , a plurality of groups of air guide pipes 32 are arranged at intervals along the circumferential direction inside the sealing cover 3, and each group of air guide pipes 32 is in communication with the inside of the flexible sleeve 31. A pressurizing assembly 6 is installed on the sealing cover 3 to increase the pressure inside the air guide pipes 32, thereby driving the flexible sleeve 31 to elastically expand.

[0050] Referring to Figure 1 and Figure 2 , the pressurizing assembly 6 includes a pressurizing plug 61, a threaded block 62 and a driving frame 63; an annular communication pipe 33 is provided inside the sealing cover 3 for communicating all the air guide pipes 32; a pressurizing groove 34 is provided on the side wall of the sealing cover 3, and the pressurizing groove 34 is in communication with the inside of the air guide pipes 32.

[0051] Referring to Figure 1 and Figure 2 , in this embodiment, the pressurizing plug 61 can be made of rubber with a soft texture. The pressurizing plug 61 is slidably connected inside the pressurizing groove 34, and the pressurizing plug 61 is in close fit with the inner side wall of the pressurizing groove 34. The threaded block 62 is adhesively connected to the side wall of the pressurizing plug 61 facing away from the workbench 1, and the peripheral wall of the threaded block 62 is threadedly connected to the inner side wall of the pressurizing groove 34. The driving frame 63 is welded and fixed to the side wall of the threaded block 62 facing away from the pressurizing plug 61 to facilitate the detection personnel to drive the threaded block 62 to rotate.

[0052] The implementation principle of a detection device for the waterproof performance of an HEV battery pack connector in an embodiment of the present application is as follows:

[0053] Place the battery pack body 11 and the connector body 12 to be detected on the workbench 1, and control the output end of the pushing member 21 to contract, so that the fixing plate 22 drives the anti-slip pad 23 to gradually approach the battery pack body 11. The side wall of the anti-slip pad 23 facing away from the fixing plate 22 abuts against the side wall of the battery pack body 11 to stably press and fix the battery pack body 11 on the workbench 1.

[0054] Control the output end of the pressing member 42 to extend, so that the sealing cover 3 gradually approaches the battery pack body 11, and the flexible sleeve 31 fits with the side wall of the battery pack body 11 to cover the connection part between the battery pack body 11 and the connector body 12.

[0055] Start the air supply member 13 to supply air to the inside of the sealing cover 3 and make the air pressure inside the sealing cover 3 reach a certain air pressure value. Close the air supply member 13 and control the electric control valve 51 to close so that the sealing cover 3 maintains a sealed state. Observe the change of the air pressure value inside the sealing cover 3 through the control member 53, the display screen 54 and the detection member 52. If the air pressure value inside the sealing cover 3 decreases significantly, it means that the waterproof performance of the connection part between the battery pack body 11 and the connector body 12 is poor; if the air pressure value inside the sealing cover 3 tends to be stable, it means that the waterproof performance of the connection part between the battery pack body 11 and the connector body 12 is good, thus realizing the convenient detection of the waterproof performance of the connection part between the battery pack body 11 and the connector body 12.

[0056] An embodiment of the present application also discloses a detection method for a detection device for the waterproof performance of an HEV battery pack connector, including the following steps:

[0057] Fixing: After connecting the battery pack body 11 and the connector body 12 to be detected, place them on the workbench 1, and use the fixing component 2 to assist in fixing the battery pack body 11 and the connector body 12;

[0058] Sealing: The pressing component 4 presses and fixes the sealing cover 3 on the battery pack body 11 to hermetically cover the connection part between the battery pack body 11 and the connector body 12;

[0059] Air supply: The air supply member 13 supplies gas to the inside of the sealing cover 3 so that the inside of the sealing cover 3 has a certain air pressure value, and then closes the air supply of the air supply member 13 to the sealing cover 3;

[0060] Detection: The detection component 5 detects the change of the air pressure value inside the sealing cover 3 in real time;

[0061] If the air pressure value inside the sealing cover 3 decreases significantly, it means that the waterproof performance of the connection part between the battery pack body 11 and the connector body 12 is poor;

[0062] If the air pressure value inside the sealing cover 3 tends to be stable, it means that the waterproof performance of the connection part between the battery pack body 11 and the connector body 12 is good.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A detection device for the waterproofness of a HEV battery pack connector, characterized in that: The invention comprises a workbench (1) for carrying a battery pack body (11) and a connector body (12); the workbench (1) is provided with a fixing component (2) for fixing the battery pack body (11); the workbench (1) is provided with a sealing cover (3) for covering the connection portion between the battery pack body (11) and the connector body (12); the workbench (1) is provided with a pressing component (4) for fixing the sealing cover (3) on the battery pack body (11); the workbench (1) is provided with an air supply member (13) connected to the interior of the sealing cover (3) for supplying air to the interior of the sealing cover (3); the workbench (1) is provided with a detection component (5) for detecting changes in the air pressure value inside the sealing cover (3); The end of the sealing cover (3) facing the workbench (1) is provided with a flexible sleeve (31) for fitting the battery pack body (11); An air duct (32) communicating with the interior of the flexible sleeve (31) is provided inside the sealing cover (3), and a pressurizing component (6) is provided on the sealing cover (3) for increasing the internal pressure of the air duct (32); The pressurizing assembly (6) comprises a pressurizing plug (61), a threaded block (62) and a driving frame (63); a connecting pipe (33) communicating with the air guide pipe (32) is provided inside the sealing cover (3); a pressurizing groove (34) is provided on the side wall of the sealing cover (3) away from the workbench (1) for communicating with the connecting pipe (33); the pressurizing plug (61) is slidably arranged inside the pressurizing groove (34), and the pressurizing plug (61) and the pressurizing groove (34) are adapted to each other; the threaded block (62) is arranged on the side wall of the pressurizing plug (61) away from the workbench (1), and the threaded block (62) is threadedly connected to the inner side wall of the pressurizing groove (34); the driving frame (63) is arranged on the side wall of the threaded block (62) away from the pressurizing plug (61) for driving the threaded block (62) to rotate.

2. The detection device for the waterproof property of a HEV battery pack connector according to claim 1, characterized in that: The fixing assembly (2) includes a pushing member (21), a fixing plate (22) and an anti-slip pad (23); the pushing member (21) is arranged on the workbench (1), and the pushing member (21) is relatively distributed on both sides of the battery pack body (11); the fixing plate (22) is arranged at the output end of the pushing member (21), and the anti-slip pad (23) is arranged on the side wall of the fixing plate (22) facing the battery pack body (11) to press the battery pack body (11).

3. The detection device for the waterproof property of a HEV battery pack connector according to claim 1, characterized in that: The pressing assembly (4) comprises a mounting frame (41) and a pressing member (42); the mounting frame (41) is arranged on a workbench (1), the pressing member (42) is arranged on the mounting frame (41), and the output end of the pressing member (42) is connected to the sealing cover (3) to drive the sealing cover (3) close to or away from the battery pack body (11).

4. The detection device for the waterproof property of a HEV battery pack connector according to claim 1, characterized in that: The detection component (5) includes an electromagnetic control valve (51), a detector (52), a control component (53), and a display screen (54); the electromagnetic control valve (51) is communicatively connected between the output end of the air supply component (13) and the sealing cover (3) for controlling the communication state between the air supply component (13) and the sealing cover (3); the detector (52) is disposed on the sealing cover (3) for detecting the air pressure value inside the sealing cover (3), the control component (53) is disposed on the workbench (1), and both the detector (52) and the electromagnetic control valve (51) are controlled by the control component (53), and the control component (53) is used for receiving the air pressure value; the display screen (54) is disposed on the control component (53), and the display screen (54) is controlled by the control component (53) for displaying the air pressure value received by the control component (53).

5. The detection device for the waterproof property of a HEV battery pack connector according to claim 1, wherein: The cross-section of the flexible sleeve (31) in its thickness direction is wavy.

6. The detection device for the waterproof property of an HEV battery pack connector according to claim 1, characterized in that: A plurality of groups of the air guide pipes (32) are arranged at intervals along the circumferential direction of the sealing cover (3), and each group of the air guide pipes (32) is communicated with the communication pipe (33).

7. A detection method for the waterproof property of an HEV battery pack connector as described in any one of claims 1-6, characterized in that: It includes the following steps: Fixing: The fixing component (2) assists in fixing the battery pack body (11) and the connector body (12). Sealing: The pressing component (4) presses and fixes the sealing cover (3) on the battery pack body (11) to hermetically cover the connection part of the battery pack body (11) and the connector body (12). Air supply: The air supply component (13) supplies gas into the sealing cover (3) so that a certain air pressure value is available inside the sealing cover (3). Detection: The detection component (5) detects the change of the air pressure value inside the sealing cover (3) in real time.

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