CN202002778U - Automatic battery core leakage detector - Google Patents

Abstract

The utility model relates to an air tightness testing device, in particular to an automatic leak testing machine for electric cores. It includes a plurality of leak detection heads connected with vacuum tubes, the plurality of leak detection heads are arranged horizontally on a leak detection head support, and the leak detection head support is connected to a leak detection head action cylinder that drives the leak detection head to move up and down, The action cylinder of the leak detection head is installed on the cylinder bracket, and a jig for placing the cells to be tested is arranged under the leak detection head bracket. There are observation windows corresponding to each leak measuring head on the protective cover. After the utility model is started, the leak detection head automatically detects the air tightness of the battery cell to be tested, and the operator only needs to participate in the operation of switching and taking the discharge core, and the operation efficiency is high. The detection situation can be directly observed through the observation window, and the detection is accurate. Moreover, batteries of various specifications can be detected, the adaptability of the product is good, and the cost of production and use is reduced.

Description

Battery automatic leak tester

technical field

The utility model relates to an air tightness testing device, in particular to an automatic leak testing machine for electric cores.

Background technique

At present, a leak testing process is included in the processing steps of lithium batteries. The leak testing process is a step of testing and screening the air tightness of battery cells. The existing leak testing process uses semi-automatic equipment or manual leak testing. , Manual leak detection is slow and the production efficiency is low. The hourly production capacity is about 5000-6000 pieces, and the misjudgment rate is relatively high. It takes a long time to change the model of semi-automatic equipment, and different models need to adjust the fixtures, resulting in many unstable factors or production problems. In the process, the processed products will be damaged and scrapped, the maintenance cost and production cost of the user will increase, and the utilization rate of equipment will decrease.

Contents of the invention

The purpose of the utility model is to provide a battery cell automatic leak tester which has high test efficiency and can automatically adapt to various types of devices to be tested.

In order to achieve the above object, the utility model adopts the following technical solutions:

It includes a plurality of leak detection heads connected with vacuum tubes, the plurality of leak detection heads are arranged horizontally on a leak detection head support, and the leak detection head support is connected to a leak detection head action cylinder that drives the leak detection head to move up and down , the action cylinder of the leak test head is installed on the cylinder bracket, and a jig for placing the cell to be tested is arranged under the bracket of the leak test head, and the two ends of the jig are provided with movable clamping parts for clamping the battery cells, and the movable clamping parts are connected to a Clamp the cylinder, the cylinder bracket is installed on a base, the base is provided with a vacuum shield with a vacuum chamber, the vacuum shield is provided with an observation window corresponding to each leak test head, the leak test head and the observation window Connected to the vacuum shield through the air tube.

Preferably, the fixture is provided with two sections on the left and right, and each section is provided with a place suitable for the leak measuring head.

Preferably, the clamp is connected with a left and right moving cylinder.

Preferably, the clamp is connected with a left and right stroke limiter for controlling the left and right alignment accuracy.

Preferably, an automatic alignment member is provided on the base.

Preferably, a vacuum buffer is provided under the leak test head bracket.

Preferably, control buttons are provided on the base.

When the battery cell automatic leak tester of the utility model is working, the battery cell to be tested is placed on the fixture, and the leak test head automatically performs air tightness detection on the battery cell to be tested after starting, and the operator only needs to participate in switching and taking out the discharge core Operation, the operation efficiency is high, the detection situation can be directly observed through the observation window, the detection is accurate, and it can detect batteries of various specifications, the product has good adaptability, and the production and use costs are reduced.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

The purpose, functions and advantages of the utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

As shown in Figure 1, the utility model includes a plurality of leak detection heads 2 connected with a vacuum tube 1, and the plurality of leak detection heads 2 are arranged horizontally on a leak detection head support 3, and the leak detection head support 3 Connect a leak test head action cylinder 4 that drives the leak test head support 3 to move up and down, the leak test head action cylinder 4 is installed on the cylinder support 5, and a jig 6 for placing the cell to be tested is arranged under the leak test head support 3. Both ends of the fixture 6 are provided with movable clamping parts 7 for clamping the electric core, and the movable clamping parts 7 are connected with a clamping cylinder 8, and the cylinder bracket 5 is installed on a base 9, which is provided with a vacuum chamber 10 of the vacuum shield 11, the vacuum shield 11 is provided with an observation window 12 corresponding to each leak test head 2, and the leak test head 2 and the observation window 12 are connected to the vacuum shield 11 through a gas pipe, such as airtight If the performance is not good, bubbles will appear in the vacuum chamber, and the degree of bubbling and air leakage can be seen through the observation window 12.

In order to improve the efficiency and realize the placement of the next group of batteries while detecting one group of batteries, the fixture 6 described in this embodiment is provided with two sections on the left and right, and each section is provided with a corresponding leak detection head. place; the clamp 6 is connected with a left and right action cylinder 13 and a left and right stroke limiter 14 that controls the accuracy of the left and right alignment; the base 9 is provided with an automatic alignment member 15, which is driven by the cylinder For alignment, since the size from the liquid injection hole to the edge distance of each type of battery is the same, it is only necessary for the cylinder to drive the automatic alignment member 15 to act to withstand the side.

A vacuum buffer 16 is provided under the leak test head bracket; a control button 17 is provided on the base.

When in use, put the battery cells to be tested into the cell placement fixture 6 one by one, start the program switch, the clamping cylinder 8 acts, the movable clamping part 7 acts to clamp the cells, and the automatic alignment part 15 acts to correct The position of the battery cell makes the position of the liquid injection hole coincide with the vacuum leak test head 2, the action cylinder 4 leak test head lowers and presses the battery cell to reach a sealed state, open the vacuum switch and hold the pressure for 5-8 seconds to judge whether it is qualified through the observation window 12 (with or without After the time is up, the qualified and unqualified products should be selected and distinguished according to the corresponding positions. The left and right actuating cylinders 13 move back and forth to realize the efficiency conversion, and the left and right stroke limiters 14 determine the alignment accuracy.

The above descriptions are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (7)

1. An automatic battery leak tester, characterized in that: it includes a plurality of leak test heads connected with vacuum tubes, the plurality of leak test heads are arranged horizontally on a leak test head support, and the leak test head support Connect a leak-testing head action cylinder that drives the leak-testing head to move up and down. The leak-testing head action cylinder is installed on the cylinder bracket. A fixture for placing the cell to be tested is arranged under the leak-testing head bracket. Clamping is provided at both ends of the fixture. The movable clamping part of the electric core is connected with a clamping cylinder. The cylinder bracket is installed on a base, and a vacuum shield with a vacuum chamber is arranged on the base. The vacuum shield is provided with each The observation window corresponding to the leak test head. 2. The battery automatic leak tester according to claim 1, characterized in that: the fixture is provided with two sections on the left and right, and each section is provided with a place suitable for the leak test head. 3. The battery automatic leak tester according to claim 2, characterized in that: said clamp is connected with a left and right moving cylinder. 4. The battery automatic leak tester according to claim 3, wherein the fixture is connected with a left and right stroke limiter for controlling the left and right alignment accuracy. 5. The battery cell automatic leak tester according to claim 4, characterized in that: the base is provided with an automatic alignment member. 6. The battery automatic leak tester according to claim 5, characterized in that: a vacuum buffer is provided under the leak tester bracket. 7. The battery automatic leak tester according to claim 6, characterized in that: the base is provided with control buttons.