Air tightness detection tool suitable for battery frame

Abstract

The utility model discloses an air tightness detection tool suitable for a battery frame, 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 reciprocating along the conveying direction of the horizontal conveying system, and the detection table is used for fixedly installing the battery frame to be detected. 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 utility model are that the pressure plate is good in sealing performance, time-saving and labor-saving, and high in detection efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection technical field, specifically related to airtightness detection frock suitable for battery frame. BACKGROUND

[0002] With the popularity of electronic equipment and the increase of portable power supply demand, batteries as energy storage devices have been widely used, such as electric vehicles, electric vehicles, electric power-assisted bicycles and many other new energy vehicle products. The airtightness of the battery is crucial to its performance and safety. Not only the airtightness of the battery shell is detected, but also the airtightness of the battery frame is also an indispensable link. The purpose is to ensure that the internal environment of the battery is isolated from the outside world, prevent the electrolyte in the battery from leaking, and prevent the external environment from eroding the internal structure of the battery.

[0003] At present, the airtightness detection of the battery frame is as follows:

[0004] First, the battery frame is placed on the detection table, and then the pressing plate is tightly pressed on the upper end of the battery frame through the lifting movement, so that a closed space is formed in the battery frame. Finally, the closed space is pressurized or inflated. If there is a leakage point, the gas will gradually leak from the leakage point, causing the internal pressure to drop. Therefore, by detecting the change of the internal pressure of the closed space, it can be judged whether the battery frame sealing is qualified.

[0005] The traditional frame airtightness detection frock adopts a single cylinder in the middle position to drive the pressing plate. When pressed downward, the stress of the four sides is not synchronized, causing uneven pressure and affecting the sealing of the pressing plate. At the same time, due to the heavy weight of the battery frame, combined with the blocking of the pressing plate above the detection table, the battery frame is time-consuming and laborious to install to the detection table, and the working efficiency is low. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model provides airtightness detection frock suitable for battery frame, which aims to solve the problems of the above-mentioned existing frame airtightness detection frock.

[0007] To achieve the above-mentioned purpose, the utility model technical scheme is as follows:

[0008] A fixture for airtightness testing of battery frames includes a fixture body with a frame. The frame is equipped with a horizontal conveying system, and a testing platform that can reciprocate along its conveying direction is mounted on the horizontal conveying system. The testing platform is used to fix the battery frame to be tested. The left and right halves of the horizontal conveying system are defined as a testing work area and a loading / unloading area, respectively. A rectangular frame is mounted on the frame in the space above the corresponding testing work area. A pressure plate is mounted on the rectangular frame that can be moved up and down by a main cylinder. When the testing platform carries the battery frame to be tested from the loading / unloading area to the testing work area, the pressure plate can press down on the battery frame to be tested from top to bottom.

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

[0010] With the above structure, the pressure plate is connected to the synchronous transmission mechanism, ensuring even force distribution at the four corners and good sealing performance of the pressure plate. The battery frame is fixed by the testing platform, and the horizontal conveying system is equipped with a testing work area and a loading and unloading area, which facilitates loading and unloading, saves time and labor, and improves testing efficiency.

[0011] Preferably, the synchronous transmission mechanism includes four synchronous rotating shafts rotatably mounted on the top of a rectangular frame and four transmission rods fixedly mounted at the four corners of the upper side of the pressure plate. The four synchronous rotating shafts are rectangularly distributed, and the four transmission rods extend vertically upwards and are arranged correspondingly on one radial side of the four synchronous rotating shafts. Each transmission rod has a strip-shaped toothed portion arranged along the height direction. The synchronous rotating shafts are fixedly fitted with gears that mesh with the strip-shaped teeth, and the ends of adjacent synchronous rotating shafts are connected by a bevel gear set. With the above structure, the main cylinder drives the pressure plate to move downwards, the transmission rods are driven to move downwards, and the gears meshing with the strip-shaped teeth rotate, driving the four synchronous rotating shafts to rotate. The ends of the four synchronous rotating shafts are connected by a bevel gear set, forcing the four synchronous rotating shafts to maintain horizontal synchronization, realizing synchronous downward pressing of the pressure plate and improving the sealing effect of the pressure plate.

[0012] Preferably, four auxiliary cylinders are provided on the rectangular frame at the four corners corresponding to the pressure plate. With this structure, the pressure plate is subjected to uniform force at its four corners, resulting in a better sealing effect.

[0013] Preferably, four guide rods are movably mounted on the rectangular frame, distributed at the four corners of the pressure plate, with their lower ends fixed to the pressure plate. This structure makes the movement of the pressure plate more stable.

[0014] Preferably, the frame is equipped with a limiting mechanism and a locking mechanism at both ends of the corresponding testing work area. When the testing platform moves from the loading / unloading area to the testing work area, one end of the testing platform abuts against the limiting mechanism, and the other end is fixed by the locking mechanism. This structure prevents lateral displacement of the battery frame, which could lead to poor airtightness and result in an accurate testing structure.

[0015] Preferably, the locking mechanism includes a locking component and a driving device. The driving device is fixed to the frame. The lower end of the locking component is connected to the driving device, and the upper end is provided with a locking part. The driving device can drive the locking component to rotate upward so that the locking part abuts against the side of the testing table. The structure is simple and easy to install.

[0016] Preferably, the limiting mechanism includes a limiting component and a support spring, both of which are fixed to the frame. When the testing table moves from the loading / unloading area to the testing work area, the limiting component and the support spring abut against the side of the testing table, at which point the support spring is in a compressed state. This structure, in conjunction with a locking mechanism, secures the testing table and prevents lateral displacement.

[0017] Preferably, the frame is equipped with balance display components at its four corners, and the bottom of the fixture body is provided with several adjustable feet. With this structure, the balance display components are adjusted to a horizontal position by adjusting the adjustable feet, thereby balancing the fixture body.

[0018] Preferably, a height / lowering sensor is fixed to the top of the rectangular frame, and the upper end of the guide rod adjacent to the height / lowering sensor has an extension that extends radially outward, with the lower side of the extension abutting against the height / lowering sensor. This structure is simple and easy to use.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. A main cylinder is located in the center of the pressure plate, and four auxiliary cylinders are located at the four corners. The pressure plate is driven simultaneously from the center and the four sides, resulting in even force distribution. Furthermore, the pressure plate is connected to a synchronous transmission mechanism, ensuring that the entire plate presses down synchronously, resulting in a good sealing effect.

[0021] 2. The battery frame is transported by a horizontal conveyor system, which is divided into a testing area and a loading / unloading area. The loading / unloading area is unobstructed, which facilitates installation, saves time and effort, and improves testing efficiency.

[0022] 3. When the testing platform slides from the loading and unloading area into the testing work area, the limiting mechanism and locking mechanism set at both ends of the testing work area can lock the testing platform to prevent it from shifting to the side and affecting the testing results.

[0023] 4. The tooling body is equipped with a balance display component. By adjusting the adjustable feet, the balance display component can be made to show a horizontal position, thereby ensuring the balance of the tooling body. The structure is simple and the adjustment is convenient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

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

[0026] Figure 3 A schematic diagram of the synchronous transmission mechanism 05 is provided.

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

[0028] Figure 5 A schematic diagram illustrating the engagement of transmission rod 052;

[0029] Figure 6 A schematic diagram of the horizontal conveyor system 03 is provided.

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

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

[0032] Figure 9 A schematic diagram illustrating the height and position sensor 14;

[0033] Figure 10 This is a schematic diagram to illustrate sewage tank 92. Detailed Implementation

[0034] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, a gas tightness testing fixture suitable for battery frames includes a fixture body A. The fixture 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 consists of four sets of parallel slide rails, on which a testing table 01 capable of reciprocating along the conveying direction is installed. The battery frame to be tested is fixed on the testing table 01. Figure 6 As shown, the left and right halves of the horizontal conveying system 03 are defined as the inspection work area 031 and the loading / unloading area 032, respectively. An airtightness detector 15 is installed on the frame 09 in the space above the corresponding inspection work area 031. Figure 10As shown, the frame 09 is also provided with a sewage tank 92 for sewage discharge at the corresponding airtight detector position, and a rectangular frame 091 is installed above the airtight detector 15.

[0036] like Figure 3 and Figure 4 As shown, a pressure plate 04 is mounted on a rectangular frame 091, movable vertically via a main cylinder 02 in the middle and four auxiliary cylinders 06 at the four corners. Four upward-extending guide rods 07 are also mounted on the pressure plate 04 at the four corners, allowing them to move vertically relative to the rectangular frame 091. A synchronous transmission mechanism 05 is provided between the pressure plate 04 and the rectangular frame 091, enabling the pressure plate 04 to move stably up and down. 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 testing work area 031. When the testing table 01 moves from the loading and unloading area 032 to the testing work area 031, one end of the testing table 01 abuts against the limit mechanism 10, and the other end is fixed by the locking mechanism 11.

[0037] like Figures 3-5 As shown, the synchronous transmission mechanism 05 includes 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 the pressure plate 04. The four synchronous rotating shafts 051 are arranged in a rectangular pattern, and the ends of adjacent synchronous rotating 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-to-one on the radial side of the four synchronous rotating shafts 051. Each transmission rod 052 is provided with a strip-shaped toothed portion 052a arranged along the height direction, and a gear 053 that meshes with the strip-shaped toothed portion 052a is fixedly sleeved at the end of the synchronous rotating 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 abutment part at the upper end. The driving device 112 can drive the locking component 111 to rotate. In the normal state, the locking component 111 is horizontal and avoids the horizontal conveying system 03. After the detection table 1 slides from the loading and unloading area 032 into the detection working area 031, the driving device 112 drives the locking component 111 to rotate upward so that the locking part abuts against the side of the detection table 1. In this embodiment, a first extension component 111a and a second extension component 111b are fixedly connected to the side of the locking component 111 near the detection table 01. They can extend the locking component 111 along the height and width directions, respectively.

[0039] like Figure 8As shown, the limiting mechanism 10 includes a limiting component 101 and a support spring 102. The limiting component 101 is block-shaped and is fixed on the frame 09 with the support spring 102 arranged vertically. When the detection table 01 is pushed into the detection work area 031, the limiting component 101 and the support spring 102 both abut against the side of the detection table 01. At this time, under the action of the locking mechanism 11, the support spring 102 is in a compressed state.

[0040] like Figure 6 and Figure 9 As shown, balance display components 12 are provided at the four corners of the frame 09. The balance display components 12 are bubble balance components. The bottom of the fixture body A is provided with several adjustable feet 13. By adjusting the height of the adjustable feet 13, the balance display components 12 are displayed as balanced, so that the fixture body A is balanced. As shown in the figure, a height and position sensor 14 is fixed next to a guide rod 07 on the rectangular frame 091. The upper end of the guide rod 07 has an extension 071 that extends radially outward. The lower side of the extension 071 abuts against the upper end of the height and position sensor 14. By limiting the position of the guide rod 07, the position of the pressure plate 04 is limited.

[0041] As shown in the figure, the specific testing steps of the battery frame airtightness testing fixture are as follows: First, check the status displayed by the balance display component 12. By adjusting the adjustable feet 13 at the bottom of the fixture body A, ensure that the fixture body A is in a balanced state. Fix the battery frame to be tested onto the testing table 01 at 032. The horizontal conveying system 03 conveys the battery frame to the testing work area 031. One side of the testing table 01 is restricted by the limiting component 101 and the support spring 102. The locking component 111 at the other end presses down on the other side of the testing table 01. The locking mechanism 11 cooperates with the limiting mechanism 10 to lock the testing table 01.

[0042] The main cylinder 02 and the auxiliary cylinder 06 drive the pressure plate 04 to press down. 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 rotating shaft 051, forcing the synchronous rotating shaft 051 to rotate. The ends of two adjacent synchronous rotating shafts 051 are connected by a bevel gear set 054, so that the four synchronous rotating shafts 051 rotate synchronously and the pressure plate 04 presses down synchronously. After the pressure plate 04 reaches the designated position, it presses the battery frame according to the preset value set by the high and low position sensor 14. The air tightness detector 15 pressurizes the inside of the battery frame to detect the internal air tightness. After the test is completed, the horizontal conveying system 03 transports the battery frame to the loading and unloading area 032. The test is completed.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A tooling for testing the airtightness of a battery frame, characterized in that: The device includes a tooling body (A), which has a frame (09). The frame (09) is equipped with a horizontal conveying system (03). The horizontal conveying system (03) is equipped with a testing table (01) that can reciprocate along its conveying direction. The testing table (01) is used to fix the battery frame to be tested. The left and right halves of the horizontal conveying system (03) are defined as the testing work area (031) and the loading and unloading area (032), respectively. The frame (09) is equipped with a rectangular frame (091) in the space above the corresponding testing work area (031). A pressure plate (04) is installed on the rectangular frame (091) and can be moved up and down by a main cylinder (02). When the testing table (01) carries the battery frame to be tested from the loading and unloading area (032) to the testing work area (031), the pressure plate (04) can press down on the battery frame to be tested from top to bottom. A synchronous transmission mechanism (05) is provided between the pressure plate (04) and the rectangular frame (091). When the main cylinder (02) controls the pressure plate (04) to move up and down, the synchronous transmission mechanism (05) enables the pressure plate (04) to move up and down stably.

2. The airtightness testing fixture for battery frames according to claim 1, characterized in that: The synchronous transmission mechanism (05) includes four synchronous rotating shafts (051) rotatably mounted on the top of a rectangular frame (091) and four transmission rods (052) fixedly mounted on the four corners of the upper side of the pressure plate (04). The four synchronous rotating shafts (051) are arranged in a rectangular shape. The four transmission rods (052) all extend upward in the vertical direction and are arranged on the radial side of the four synchronous rotating shafts (051) in a corresponding manner. Each transmission rod (052) is provided with a strip tooth (052a) arranged in the height direction. The synchronous rotating shaft (051) is fixedly fitted with a gear (053) that meshes with the strip tooth (052a). The ends of two adjacent synchronous rotating shafts (051) are connected by a bevel gear set (054).

3. The airtightness testing fixture for battery frames according to claim 1, characterized in that: The rectangular frame (091) is provided with four auxiliary cylinders (06) at the four corners of the pressure plate (04).

4. The airtightness testing fixture for battery frames according to claim 2, characterized in that: Four guide rods (07) are mounted on the rectangular frame (091) and can be moved up and down. The four guide rods (07) are distributed at the four corners of the pressure plate (04) and the lower end is fixed to the pressure plate (04).

5. The airtightness testing fixture for battery frames according to claim 3, characterized in that: The frame (09) is provided with a limiting mechanism (10) and a locking mechanism (11) at both ends of the corresponding testing work area (031). When the testing table (01) moves from the loading and unloading area (032) to the testing work area (031), one end of the testing table (01) abuts against the limiting mechanism (10), and the other end is fixed by the locking mechanism (11).

6. The airtightness testing fixture for battery frames according to claim 5, characterized in that: 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 lower end of the locking component (111) is connected to the driving device (112), and the upper end is provided with a locking part. The driving device (112) can drive the locking component (111) to rotate upward so that the locking part abuts against the side of the detection table (01).

7. The airtightness testing fixture for battery frames according to claim 5, characterized in that: The limiting mechanism (10) includes a limiting component (101) and a support spring (102). Both the limiting component (101) and the support spring (102) are fixed on the frame (09). When the testing table (01) moves from the loading and unloading area (032) to the testing work area (031), both the limiting component (101) and the support spring (102) abut against the side of the testing table (01). At this time, the support spring (102) is in a compressed state.

8. The airtightness testing fixture for battery frames according to claim 1, characterized in that: The frame (09) is provided with balance display components (12) at the four corners, and the tooling body (A) is provided with several adjustable feet (13) at the bottom.

9. The airtightness testing fixture for battery frames according to claim 4, characterized in that: The top of the rectangular frame (091) is fixed with a height and low position sensor (14), and the upper end of the guide rod (07) adjacent to the height and low position sensor (14) is provided with an extension (071) extending radially outward, and the lower side of the extension (071) abuts against the height and low position sensor (14).

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