Battery frame air tightness detection tool

Abstract

The invention discloses a battery frame air tightness detection tool which comprises a tool body, the tool body is provided with a rack, the rack is provided with a horizontal conveying system, the horizontal conveying system is provided with a detection table capable of moving in a reciprocating mode in the conveying direction of the horizontal conveying system, and the detection table is used for fixedly installing a to-be-detected battery frame. The left half part and the right half part of the horizontal conveying system are defined as a detection working area and a loading and unloading area respectively, a rectangular frame is installed in the space, corresponding to the upper portion of the detection working area, of the rack, and a pressing plate is installed on the rectangular frame in an up-and-down moving mode through a main air cylinder. When the detection table carries the to-be-detected battery frame to move from the loading and unloading area to the detection working area, the pressing plate can be tightly pressed on the to-be-detected battery frame from top to bottom; a synchronous transmission mechanism is arranged between the pressing plate and the rectangular frame, and when the main air cylinder controls the pressing plate to move up and down, the synchronous transmission mechanism can enable the pressing plate to stably ascend and descend. The beneficial effects of the invention are that the pressing plate is good in sealing performance, time-saving and labor-saving, and high in detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection, and in particular to an air tightness detection tool for a battery frame. Background Art

[0002] With the popularization of electronic devices and the increasing demand for portable power sources, batteries have been widely used as energy storage devices, such as electric vehicles, electric bicycles, and many other new energy vehicle products. The air tightness of the battery is crucial to its performance and safety. Not only the air tightness test of the battery shell, but also the air tightness test of the battery frame is an indispensable link. Its purpose is to ensure that the internal environment of the battery is isolated from the outside world, prevent the leakage of electrolytes in the battery, and prevent the external environment from corroding the internal structure of the battery.

[0003] The current method for testing the air tightness of the battery frame is:

[0004] First, place the battery frame on the inspection table, and then press the upper end of the battery frame through the lifting and lowering pressure plate to form a closed space inside the battery frame. Finally, pressurize or inflate the closed space. If there is a leak, the gas will gradually leak out from the leak, causing the internal pressure to drop. Therefore, by detecting the change in the internal pressure of the closed space, it can be determined whether the battery frame is sealed properly.

[0005] The traditional frame air tightness test tool uses a single cylinder in the middle to drive the pressure plate. When pressing down, the forces on all sides are not synchronized, resulting in uneven pressure and affecting the sealing of the pressure plate. At the same time, due to the heavy weight of the battery frame and the pressure plate blocking the top of the test bench, it is time-consuming and laborious to install the battery frame on the test bench, and the work efficiency is low. Summary of the invention

[0006] In view of this, the present invention provides a battery frame air tightness testing tool, which aims to solve the problems existing in the above-mentioned existing frame air tightness testing tool.

[0007] To achieve the above purpose, the technical solution of the present invention is as follows:

[0008] A battery frame air tightness detection tool, comprising a tool body, the tool body having a frame, the frame being equipped with a horizontal conveying system, the horizontal conveying system being equipped with a detection platform capable of reciprocating along its conveying direction, the detection platform being used for fixing and installing a battery frame to be tested, the left half and the right half of the horizontal conveying system being defined as a detection working area and a loading and unloading area, respectively, the frame being equipped with a rectangular frame in a space above the corresponding detection working area, a pressing plate being movably mounted on the rectangular frame through a main cylinder, and when the detection platform carrying the battery frame to be tested moves from the loading and unloading area to the detection working area, the pressing plate can be pressed from top to bottom on the battery frame to be tested;

[0009] A synchronous transmission mechanism is provided between the pressing plate and the rectangular frame. When the main cylinder controls the pressing plate to move up and down, the synchronous transmission mechanism can enable the pressing plate to move up and down stably.

[0010] With the above structure, the pressing plate is connected to the synchronous transmission mechanism, the four corners are evenly stressed, and the sealing of the pressing plate is good. The battery frame is fixed by the testing table, and the testing work area and loading and unloading area are set on the horizontal conveying system, which is convenient for loading and unloading, saving time and effort, and improving the testing efficiency.

[0011] Preferably, the synchronous transmission mechanism includes four synchronous shafts rotatably mounted on the top of the rectangular frame and four transmission rods fixedly mounted on the four corners of the upper side of the pressure plate. The four synchronous shafts are distributed in a rectangular shape. The four transmission rods extend upward in the vertical direction and are arranged one by one on the radial side of the four synchronous shafts. Each transmission rod is provided with a bar-shaped tooth portion arranged in the height direction. The synchronous shaft is fixedly sleeved with a gear meshing with the bar-shaped tooth portion, and the ends of two adjacent synchronous shafts are connected by a bevel gear set. With the above structure, the main cylinder drives the pressure plate to move downward, and the transmission rod is driven to move downward. The gear meshing with the bar-shaped tooth portion rotates to drive the four synchronous shafts to rotate. The ends of the four synchronous shafts are connected by the bevel gear set, forcing the four synchronous shafts to maintain horizontal synchronization, so as to achieve synchronous downward pressure of the pressure plate and improve the sealing effect of the pressure plate.

[0012] As a preferred embodiment, four auxiliary cylinders are arranged on the rectangular frame at the four corners corresponding to the pressing plate. With the above structure, the four corners of the pressing plate are evenly stressed and the sealing effect is better.

[0013] As a preferred embodiment, four guide rods are mounted on the rectangular frame so as to be movable up and down, and the four guide rods are distributed at the four corners of the pressing plate, and the lower ends of the four guide rods are fixedly connected to the pressing plate. The above structure makes the movement of the pressing plate more stable.

[0014] As a preferred embodiment, the frame is provided with a limit mechanism and a locking mechanism at both ends of the corresponding detection work area. When the detection platform is moved from the loading and unloading area to the detection work area, one end of the detection platform is against the limit mechanism, and the other end is fixed by the locking mechanism. The above structure can avoid the lateral movement of the battery frame, resulting in poor airtightness, and obtain an accurate detection structure.

[0015] Preferably, the locking mechanism comprises a locking component and a driving device, wherein the driving device is fixed on the frame, the lower end of the locking component is connected to the driving device, and the upper end is provided with a locking portion, and the driving device can drive the locking component to rotate upward so that the locking portion abuts against the side of the detection table. The structure is simple and the installation is convenient.

[0016] Preferably, the limit mechanism includes a limit component and a support spring, both of which are fixed on the frame, and when the detection platform moves from the loading and unloading area to the detection working area, the limit component and the support spring abut against the side of the detection platform, and the support spring is in a compressed state. The above structure is used in conjunction with the locking mechanism to fix the detection platform to prevent it from lateral movement.

[0017] Preferably, the frame is provided with a balance display component at the four corners, and the bottom of the tool body is provided with a plurality of adjustable feet. With the above structure, the balance display component can be adjusted to display a level by adjusting the adjustable feet, thereby balancing the tool body.

[0018] Preferably, a height sensor is fixedly arranged at the top of the rectangular frame, and an extension portion extending radially outward is arranged at the upper end of the guide rod adjacent to the height sensor, and the lower side of the extension portion abuts against the height sensor. The above structure is simple and easy to use.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A main cylinder is set in the middle of the pressure plate, and four auxiliary cylinders are set at the four corners. They are driven simultaneously from the middle and surrounding positions, and the force is evenly distributed. The pressure plate is connected to the synchronous transmission mechanism, and the whole is kept synchronously pressed down, which has a good sealing effect.

[0021] 2. The battery frame is transported through a horizontal conveying system, and the horizontal conveying system is divided into a detection work area and a loading and unloading area. The loading and unloading area is unobstructed, which is convenient for installation, saving time and effort and improving detection efficiency.

[0022] 3. When the testing platform is slid from the loading and unloading area into the testing work area, the limit mechanisms and locking mechanisms arranged at both ends of the testing work area can lock the testing platform to prevent the testing platform from shifting sideways and affecting the test results.

[0023] 4. A balance display component is provided on the tool body. By adjusting the adjustable feet, the balance display component can be made horizontal, thereby ensuring the balance of the tool body. The structure is simple and the adjustment is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 is a cross-sectional view of the present invention;

[0026] Figure 3 A schematic diagram showing a synchronous transmission mechanism 05;

[0027] Figure 4 A top view showing the layout structure of the synchronous rotating shaft 051;

[0028] Figure 5 A schematic diagram showing the meshing condition of the transmission rod 052;

[0029] Figure 6 A schematic diagram showing a horizontal conveying system 03;

[0030] Figure 7 A schematic diagram showing the locking mechanism 11;

[0031] Figure 8 A schematic diagram showing the limiting mechanism 10;

[0032] Fig. 9 A schematic diagram showing the high and low position sensor 14;

[0033] Fig.10 A schematic diagram showing a sewage tank 92. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with embodiments and drawings.

[0035] like Figure 1 and Figure 2 As shown, a battery frame air tightness test tool includes a tool body A, the tool body A has a frame 09, and a horizontal conveying system 03 is installed at the lower end of the frame 09. The horizontal conveying system 03 is four sets of slide rails arranged in parallel. The slide rails are equipped with a test table 01 that can reciprocate along the conveying direction. The battery frame to be tested is fixed on the test table 01. Figure 6 As shown, the left and right halves of the horizontal conveying system 03 are defined as the detection work area 031 and the loading and unloading area 032, respectively, and the rack 09 is equipped with an airtight detector 15 in the space above the corresponding detection work area 031. Fig.10As shown, the rack 09 is also provided with a sewage trough 92 for sewage discharge at the position corresponding to the airtight detector, and a rectangular frame 091 is installed above the airtight detector 15.

[0036] like Figure 3 and Figure 4 As shown, a pressing plate 04 is mounted on the rectangular frame 091 so as to be movable up and down through a main cylinder 02 at a middle position and four auxiliary cylinders 06 at four corners. Four guide rods 07 extending upward are also mounted on the pressing plate 04 at the four corners. The four guide rods 07 can move up and down relative to the rectangular frame 091. A synchronous transmission mechanism 05 is arranged between the pressing plate 04 and the rectangular frame 091. The synchronous transmission mechanism 05 can stably lift and lower the pressing plate 06. Figure 6 As shown, the frame 09 is provided with a limit mechanism 10 and a locking mechanism 11 at both ends of the corresponding detection work area 031. When the detection platform 01 moves from the loading and unloading area 032 to the detection work area 031, one end of the detection platform 01 abuts against the limit mechanism 10 and the other end is fixed by the locking mechanism 11.

[0037] like Figure 3-Figure 5 As shown, the synchronous transmission mechanism 05 includes four synchronous shafts 051 rotatably mounted on the top of the rectangular frame 091 and four transmission rods 052 fixedly mounted at the four corners of the upper side of the pressure plate 04. The four synchronous shafts 051 are distributed in a rectangular shape, and the ends of two adjacent synchronous shafts 051 are connected by a bevel gear set 054. The four transmission rods 052 are all cylindrical, extending upward in the vertical direction, and are arranged one by one on the radial side of the four synchronous shafts 051. Each transmission rod 052 is provided with a bar-shaped tooth portion 052a arranged in the height direction, and a gear 053 meshing with the bar-shaped tooth portion 052a is fixedly sleeved on the end of the synchronous shaft 051.

[0038] like Figure 7 As shown, the locking mechanism 11 includes a locking component 111 and a driving device 112. The driving device 112 is fixed on the frame 09. The locking component 111 includes a connecting arm at the lower end and an abutting portion at the upper end. The driving device 112 can drive the locking component 111 to rotate. Under normal conditions, the locking component 111 is in a horizontal state and avoids under the horizontal conveying system 03. After the detection platform 1 slides from the loading and unloading area 032 and is pushed into the detection working area 031, the driving device 112 drives the locking component 111 to rotate upward so that the locking portion abuts against the side of the detection platform 1. In this embodiment, the first extension component 111a and the second extension component 111b are fixedly connected to the side of the locking component 111 close to the detection platform 01, and they can extend the locking component 111 in the height and width directions respectively.

[0039] like Figure 8As shown, the limiting mechanism 10 includes a limiting component 101 and a supporting spring 102. The limiting component 101 is block-shaped and is fixed on the frame 09 in an upper and lower distribution with the supporting spring 102. When the detection platform 01 is pushed into the detection working area 031, the limiting component 101 and the supporting spring 102 are both in contact with the side of the detection platform 01. At this time, under the action of the locking mechanism 11, the supporting spring 102 is in a compressed state.

[0040] like Figure 6 and Fig. 9 As shown, the four corners of the frame 09 are provided with balance display components 12, which are bubble balance components. The bottom of the tooling body A is provided with a plurality of adjustable feet 13. By adjusting the height of the adjustable feet 13, the balance display component 12 is displayed as balanced, so that the tooling body A is balanced. As shown in the figure, a height sensor 14 is fixedly provided next to one of the guide rods 07 on the rectangular frame 091. The upper end of the guide rod 07 is provided with an extension portion 071 extending radially outward, and the lower side of the extension portion 071 abuts against the upper end of the height sensor 14, and the position of the pressure plate 04 is restricted by restricting the position of the guide rod 07.

[0041] As shown in the figure, the specific testing steps of the battery frame air tightness test tool are as follows: first check the status displayed by the balance display component 12, and ensure that the tool body A is in a balanced state by adjusting the adjustable foot 13 at the bottom of the tool body A. The battery frame to be tested is fixed to the test platform 01 at 032, and the horizontal conveying system 03 conveys the battery frame to the test work area 031. The side of one end of the test platform 01 is limited by the limiting component 101 and the support spring 102, and the locking component 111 at the other end presses the side of the other end of the test platform 01. The locking mechanism 11 cooperates with the limiting mechanism 10 to lock the test platform 01.

[0042] The main cylinder 02 and the auxiliary cylinder 06 drive the pressure plate 04 to press down, and the pressure plate 04 drives the guide rod 07 to press down. The guide rod 07 meshes with the gear 21 fixed on the synchronous shaft 051, forcing the synchronous shaft 051 to rotate. The ends of two adjacent synchronous shafts 051 are connected by the bevel gear set 054 to make the four synchronous shafts 051 rotate synchronously, so that the pressure plate 04 is pressed down synchronously. The pressure plate 04 presses the battery frame after reaching the specified position through the preset value set by the high and low in-position sensor 14, and the airtightness detector 15 inflates and pressurizes the inside of the battery frame to detect the internal airtightness. After the detection is completed, the horizontal conveying system 03 transports the battery frame to the loading and unloading area 032, and the detection is completed.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A battery frame air tightness detection tool, characterized in that: The tooling body (A) comprises a frame (09), the frame (09) is equipped with a horizontal conveying system (03), the horizontal conveying system (03) is equipped with a detection platform (01) capable of reciprocating along its conveying direction, the detection platform (01) is used to fix and install a battery frame to be tested, the left half and the right half of the horizontal conveying system (03) are respectively defined as a detection working area (031) and a loading and unloading area (032), the frame (09) is equipped with a rectangular frame (091) in the space above the corresponding detection working area (031), a pressing plate (04) is installed on the rectangular frame (091) so as to be movable up and down by a main cylinder (02), and when the detection platform (01) carries the battery frame to be tested and moves from the loading and unloading area (032) to the detection working area (031), the pressing plate (04) can be pressed from top to bottom on the battery frame to be tested; A synchronous transmission mechanism (05) is provided between the pressing plate (04) and the rectangular frame (091). When the main cylinder (02) controls the pressing plate (04) to move up and down, the synchronous transmission mechanism (05) can enable the pressing plate (06) to move up and down stably.

2. A battery frame air tightness detection tool according to claim 1, characterized in that: The synchronous transmission mechanism (05) comprises four synchronous rotating shafts (051) rotatably mounted on the top of a rectangular frame (091) and four transmission rods (052) fixedly mounted at the four corners of the upper side of a pressure plate (04). The four synchronous rotating shafts (051) are distributed in a rectangular shape. The four transmission rods (052) extend upward in a vertical direction and are arranged one by one on a radial side of the four synchronous rotating shafts (051). Each transmission rod (052) is provided with a bar-shaped tooth portion (052a) arranged in a height direction. The synchronous rotating shaft (051) is fixedly sleeved with a gear (053) meshing with the bar-shaped tooth portion (052a), and the ends of two adjacent synchronous rotating shafts (051) are connected through a bevel gear set (054).

3. The battery frame air tightness detection tool according to claim 1, characterized in that: Four auxiliary cylinders (06) are provided on the rectangular frame (91) at the four corners corresponding to the pressing plate (04).

4. The battery frame air tightness detection tool according to claim 2, characterized in that: Four guide rods (07) are mounted on the rectangular frame (091) so as to be movable up and down. The four guide rods (07) are distributed at the four corners of the pressing plate (04), and the lower ends of the four guide rods (07) are fixedly connected to the pressing plate (04).

5. The battery frame air tightness detection tool according to claim 3, characterized in that: The frame (09) is provided with a limit mechanism (10) and a locking mechanism (11) at both ends of the corresponding detection working area (031); when the detection platform (01) moves from the loading and unloading area (032) to the detection working area (031), one end of the detection platform (01) abuts against the limit mechanism (10) and the other end is fixed by the locking mechanism (11).

6. The battery frame air tightness detection tool according to claim 1, characterized in that: The locking mechanism (11) comprises a locking component (111) and a driving device (112); the driving device (112) is fixed on the frame (09); the lower end of the locking component (111) is connected to the driving device (112); the upper end is provided with a locking portion; the driving device (112) can drive the locking component (111) to rotate upwards so that the locking portion abuts against the side of the detection platform (01).

7. The battery frame air tightness detection tool according to claim 1, characterized in that: The limiting mechanism (10) comprises a limiting component (101) and a supporting spring (102), wherein the limiting component (101) and the supporting spring (102) are both fixed on the frame (09); when the detection platform (01) moves from the loading and unloading area (032) to the detection working area (031), the limiting component (101) and the supporting spring (102) are both in contact with the side of the detection platform (01), and the supporting spring (102) is in a compressed state.

8. The battery frame air tightness detection tool according to claim 1, characterized in that: The frame (09) is provided with balance display components (12) at the four corners, and the bottom of the tool body (A) is provided with a plurality of adjustable feet (13).

9. The battery frame air tightness detection tool according to claim 1, characterized in that: A height sensor (14) is fixedly arranged at the top of the rectangular frame (091), and an extension portion (071) extending radially outward is arranged at the upper end of the guide rod (07) adjacent to the height sensor (14), and the lower side of the extension portion (071) abuts against the height sensor (14).

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