CN203414251U - Air tightness testing machine for soft pack lithium battery - Google Patents

Abstract

The utility model discloses a soft packet of lithium battery gas tightness detects machine, its rack-mount charging tray material loading subassembly, charging tray material unloading subassembly, NG rejects the subassembly, the charging tray conveyer belt, material loading manipulator, material unloading manipulator, gas tightness test component, transfer transport manipulator and sweep a yard subassembly, sweep a yard subassembly including the first CCD image sensor who is used for scanning the battery code of the soft packet of lithium battery on the charging tray, gas tightness test component includes the vacuum leak hunting cavity, the vacuum pump, second CCD image sensor and laser marker, the vacuum leak hunting cavity is including testing cavity and test upper chamber down, this soft packet of lithium battery gas tightness detects machine carries out coordinated control through main control unit, can accomplish soft packet of lithium battery gas tightness and detect high-efficiently, structural design is novel, degree of automation is high and reliable and stable.

Description

Air tightness testing machine for soft pack lithium battery

technical field

The utility model relates to the technical field of detection devices, in particular to an air tightness detection machine for soft-pack lithium batteries.

Background technique

As a new type of battery structure, soft-pack lithium batteries are more and more widely used. Compared with traditional lithium-ion batteries, soft-pack lithium batteries have small size, light weight, high specific energy, high safety, and flexible design. advantage.

In order to ensure the product quality of soft-pack lithium batteries, during the production and preparation of soft-pack lithium batteries, manufacturers must perform corresponding air-tightness tests on soft-pack lithium batteries, that is, to detect whether there is air leakage in soft-pack lithium batteries. Air-tightness testing is a necessary process in the production and processing of soft-pack lithium batteries. How to effectively and quickly test the air-tightness of soft-pack lithium batteries has become a problem that many manufacturers are committed to solving.

Contents of the invention

The purpose of the utility model is to provide a soft-packed lithium battery air-tightness detector, which can efficiently complete the air-tightness test of the soft-packed lithium battery, has a novel structure design, a high degree of automation and Stable and reliable.

In order to achieve the above object, the utility model is realized through the following technical solutions.

An air tightness testing machine for a soft-packed lithium battery, comprising a frame, a tray loading assembly installed on the loading side of the frame, a tray unloading assembly installed on the unloading side of the frame, and a Next to the unloading assembly is installed a NG rejecting assembly, a tray conveyor belt installed above the frame, a loading manipulator located between the tray loading assembly and the feeding side of the tray conveyor belt, and located under the tray The unloading manipulator between the material assembly and the discharge side of the tray conveyor belt, the airtightness test assembly installed on the upper end of the frame, and the transfer between the middle of the tray conveyor belt and the airtightness test assembly Manipulator; on the side of the tray conveyor belt, a code scanning component is installed between the feeding manipulator and the transfer handling manipulator. The code scanning component includes a first CCD image sensor for scanning the battery code of the soft-pack lithium battery on the material tray ;The air tightness test assembly includes a vacuum leak detection chamber equipped with a vacuum pump. The vacuum leak detection chamber includes a test lower chamber and a test chamber that can be opened and closed above the lower test chamber. The upper cavity and the lower test cavity are installed on the frame, and the frame is equipped with a second CCD image sensor and a laser liner projected obliquely on the soft-packed lithium battery above the vacuum leak detection cavity; the soft-packed lithium The battery air tightness testing machine is equipped with a main controller, which is connected with the tray loading assembly, feeding manipulator, tray conveyor belt, first CCD image sensor, transfer handling manipulator, vacuum pump, and second CCD image sensor , laser marking device, feeding manipulator, tray feeding assembly, and NG rejecting assembly are electrically connected.

Wherein, the NG rejecting assembly includes an NG rejecting manipulator and an NG output belt located on the discharge side of the NG rejecting manipulator, and the NG rejecting manipulator is electrically connected to the main control.

Wherein, the tray loading assembly and the tray unloading assembly respectively include a movable part and a driving motor installed on the frame, the movable part is equipped with a first screw rod extending vertically, and the driving motor The power output shaft of the drive is connected with the first screw mandrel, the first screw mandrel is equipped with the first screw mandrel nut installed on the movable part, the upper end of the movable part is provided with a bearing surface for supporting the material tray, and the driving motor Electrically connected with the main controller.

Wherein, two rows of battery placement slots arranged at even intervals are opened on the front of the tray, and the airtightness test assembly includes two second CCD image sensors respectively corresponding to the corresponding rows of soft-pack lithium batteries.

Wherein, the frame is respectively equipped with a mounting frame corresponding to the first CCD image sensor and the second CCD image sensor, and the mounting frame is equipped with a second screw rod extending vertically, and the second screw rod is equipped with The screw nut is stacked, the second screw nut is equipped with a fixed block, and the first CCD image sensor and the second CCD image sensor are respectively installed on the corresponding fixed block.

Wherein, the loading manipulator, the unloading manipulator and the transfer handling manipulator respectively include air grippers and fixed brackets mounted on the frame, each fixed bracket is respectively equipped with a servo motor, and the fixed bracket is equipped with There is a third screw rod, the power output shaft of the servo motor is connected with the corresponding third screw rod, and the third screw rod is equipped with a third screw nut, and the third screw nut is equipped with an air claw fixing frame, and the air claw Installed on the corresponding air claw fixing frame, each servo motor is respectively electrically connected with the main controller.

The beneficial effects of the utility model are: a kind of air tightness detection machine for a soft-packed lithium battery described in the utility model, its frame is equipped with a tray loading assembly, a tray unloading assembly, an NG rejecting assembly, and a tray conveying Belt, feeding manipulator, unloading manipulator, air tightness test component, transfer handling manipulator and code scanning component, the code scanning component includes the first CCD image sensor used to scan the battery code of the soft pack lithium battery on the tray, the gas The leak test assembly includes a vacuum leak test chamber, a vacuum pump, a second CCD image sensor, and a laser liner. The vacuum leak test chamber includes a lower test chamber and an upper test chamber; the soft pack lithium battery air tightness tester The main controller controls the tray loading components, loading manipulator, tray conveyor belt, first CCD image sensor, transfer handling manipulator, vacuum pump, second CCD image sensor, laser marking device, unloading manipulator, tray lowering Material component, NG rejecting component action and complete the air tightness automatic detection of soft pack lithium battery; therefore, the soft pack lithium battery air tightness detection machine of the utility model can efficiently complete the air tightness test of soft pack lithium battery, and the structural design is novel , high degree of automation and stable and reliable.

Description of drawings

The utility model is further described below using the drawings, but the embodiments in the drawings do not constitute any limitation to the utility model.

Fig. 1 is a top view structural diagram of the utility model.

Fig. 2 is a schematic diagram of the front view of the utility model.

Fig. 3 is a left view structural diagram of the utility model.

Fig. 4 is a schematic structural diagram of a vacuum leak detection chamber of the present invention.

Fig. 5 is a working schematic diagram of the air tightness detection of the utility model.

Fig. 6 is a schematic diagram of the air tightness detection of the utility model.

In Figures 1 to 6 include:

1——Rack 21——Tray feeding component

22——Tray unloading assembly 23——Activity department

24——drive motor 3——NG rejection component

31——NG removal manipulator 32——NG output belt

4——Tray conveyor belt 51——Loading manipulator

52——Unloading manipulator 53——Transfer handling manipulator

6——Scan code component 61——The first CCD image sensor

7——Air tightness test component 71——Vacuum leak detection chamber

711——Test the lower cavity 712——Test the upper cavity

72——The second CCD image sensor 73——Laser marking device

8——Mounting frame.

Detailed ways

The utility model will be described below in conjunction with specific embodiments.

As shown in Figures 1 to 3, a soft-pack lithium battery airtightness tester includes a frame 1, and also includes a tray feeding assembly 21 installed on the feeding side of the frame 1, installed on the The tray unloading assembly 22 on the unloading side of the frame 1, the NG rejecting assembly 3 installed beside the tray unloading assembly 22, the tray conveyor belt 4 installed above the frame 1, and the tray loading The loading manipulator 51 between the assembly 21 and the feed side of the tray conveyor belt 4, the unloading manipulator 52 between the tray unloading assembly 22 and the discharge side of the tray conveyor belt 4, is installed on the frame 1 The airtightness test assembly 7 at the upper end and the transfer transfer manipulator 53 between the middle of the tray conveyor belt 4 and the airtightness test assembly 7; A code scanning component 6 is installed between the manipulators 53, and the code scanning component 6 includes a first CCD image sensor 61 for scanning the battery code of the soft-packed lithium battery on the tray; the airtightness test component 7 includes a vacuum leak tester The cavity 71, the vacuum leak detection cavity 71 is equipped with a vacuum pump, the vacuum leak detection cavity 71 includes a test lower cavity 711 and a test upper cavity 712 that can be opened and closed above the test lower cavity 711, and the test The lower cavity 711 is installed on the frame 1, and the frame 1 is equipped with a second CCD image sensor 72 and a laser liner 73 obliquely projected on the soft pack lithium battery above the vacuum leak detection cavity 71; the soft pack The lithium battery air tightness testing machine is equipped with a main controller, which is respectively connected with the tray feeding assembly 21, the feeding manipulator 51, the tray conveyor belt 4, the first CCD image sensor 61, the transfer handling manipulator 53, and the vacuum pump , the second CCD image sensor 72, the laser marker 73, the feeding manipulator 52, the tray feeding assembly 22, and the NG rejecting assembly 3 are electrically connected.

During the working process of the utility model, the main controller controls and coordinates the tray feeding assembly 21, the feeding manipulator 51, the tray conveyor belt 4, the first CCD image sensor 61, the transfer handling manipulator 53, and the vacuum pump through corresponding control programs. , the second CCD image sensor 72, the laser line marker 73, the feeding manipulator 52, the tray feeding assembly 22, and the NG removing assembly 3 are in action. Among them, the feeding manipulator 51 grabs the material tray lifted up by the material tray feeding assembly 21, and a soft-packed lithium battery is placed in the battery placement groove of the material tray, and the material loading manipulator 51 grabs the material tray and places the material tray on the On the tray conveyor belt 4, the soft-pack lithium battery positioned on the tray is conveyed along with the tray; when the tray passes under the first CCD image sensor 61, the first CCD image sensor 61 scans the battery placement slot of the tray The battery code of the soft-packed lithium battery inside; after scanning, the tray continues to move along with the tray conveyor belt 4, and then is grabbed by the transfer handling manipulator 53 and sent to the lower test chamber 711; then the vacuum tester is closed The test upper cavity 712 of the leakage cavity 71, the laser liner 73 marks the laser line on the surface of the soft-packed lithium battery, the second CCD image sensor 72 collects the surface image signal of the soft-packed lithium battery, and the vacuum pump operates to make the vacuum leak test cavity The vacuum degree inside 71 reaches -90KPa; under the action of negative pressure, the soft-pack lithium battery deforms, correspondingly, the position of the laser line drawn on the surface of the soft-pack lithium battery shifts, and the main controller measures the horizontal deviation of the laser line The amount of displacement and the projection angle value of the laser liner 73 are used to calculate the thickness variation of the soft-pack lithium battery. When the thickness variation of the soft-pack lithium battery exceeds a certain value, there is an air leak in the soft-pack lithium battery; When the thickness variation of the lithium battery does not exceed a certain value, there is no air leakage in the soft pack lithium battery.

After the air tightness test is completed, the soft-pack lithium battery is transferred to the tray conveyor belt by the transfer handling robot 53 along with the tray, and then the unloading robot 52 grabs the tray and transfers the soft-pack lithium battery to the tray unloading component 22 position , at this time, the tray unloading assembly 22 lifts the tray, and the NG rejecting assembly 3 removes the soft-pack lithium battery with air leakage.

Based on the above situation, it can be seen that the air tightness testing machine for soft-pack lithium batteries of the present invention can automatically and efficiently complete the air-tightness testing of soft-pack lithium batteries, with high automation, high work efficiency, and stability and reliability.

As a preferred embodiment, the NG rejecting assembly 3 includes an NG rejecting manipulator 31 and an NG output belt 32 located on the discharge side of the NG rejecting manipulator 31 , and the NG rejecting manipulator 31 is electrically connected to the main control. When working, the NG rejecting manipulator 31 grabs the leaking soft-pack lithium battery from the position of the tray unloading assembly 22 , and then, the NG rejecting manipulator 31 places the leaking soft-pack lithium battery on the NG output belt 32 .

As a preferred embodiment, the tray loading assembly 21 and the tray unloading assembly 22 respectively include a movable part 23 and a driving motor 24 installed on the frame 1, and the movable part 23 is equipped with a first wire extending vertically. Rod, the power output shaft of drive motor 24 is connected with the first screw mandrel drive, and the first screw mandrel is equipped with the first screw mandrel nut that is installed in movable part 23, and the upper end of movable part 23 is provided with and is used for taking the material tray The bearing surface of the drive motor 24 is electrically connected with the main controller. Further explanation is required, the tray loading assembly 21 and the tray unloading assembly 22 respectively have the function of buffering and lifting. Before the feeding manipulator 51 grabs the tray, the tray with the soft-packed lithium battery is buffered on the tray The movable part 23 of the material assembly 21, when the feeding manipulator 51 is ready to grab the tray, the drive motor 24 drives the first screw to rotate and drives the movable part 23 to move up to lift the tray; similarly, when the NG manipulator grabs When there is a soft-pack lithium battery with air leakage, the drive motor 24 drives the corresponding first screw to rotate and keeps the movable part 23 in the jacking state. After the NG manipulator completes the soft-pack lithium battery grabbing operation, the drive motor 24 drives the movable part. 23 move down to buffer the tray.

As a preferred embodiment, the front of the tray of the present invention is provided with two rows of evenly spaced battery placement grooves, and the airtightness test assembly 7 includes two second batteries corresponding to the corresponding rows of soft-packed lithium batteries. CCD image sensor 72; during the air tightness detection process, the two second CCD image sensors 72 operate synchronously and simultaneously collect the surface image signals of the corresponding rows of soft-packed lithium batteries.

As a preferred embodiment, the frame 1 is respectively equipped with a mounting frame 8 corresponding to the first CCD image sensor 61 and the second CCD image sensor 72, and the mounting frame 8 is equipped with a second screw mandrel extending vertically. A stacked screw nut is equipped, the second screw nut is equipped with a fixed block, and the first CCD image sensor 61 and the second CCD image sensor 72 are respectively installed on the corresponding fixed block. During the working process of the utility model, the operator can adjust the heights of the corresponding first CCD image sensor 61 and the second CCD image sensor 72 as required, so that the first CCD image sensor 61 and the second CCD image sensor 72 can be omnidirectional Accurately collect the surface image signal of the soft-packed lithium battery; wherein, when adjusting the corresponding first CCD image sensor 61 and the second CCD image sensor 72, the operator only needs to rotate the second screw rod.

As a preferred embodiment, the loading manipulator 51, the unloading manipulator 52 and the transfer handling manipulator 53 respectively include air claws and fixed brackets installed on the frame 1, each fixed bracket is respectively equipped with a servo motor, and the fixed bracket is equipped with There is a third screw rod, the power output shaft of the servo motor is connected with the corresponding third screw rod, and the third screw rod is equipped with a third screw nut, and the third screw nut is equipped with an air claw fixing frame, and the air claw Installed on the corresponding air claw fixing frame, each servo motor is electrically connected to the main controller.

The airtightness testing machine for the above-mentioned soft-packed lithium battery, the airtightness testing method for the soft-packed lithium battery includes the following process steps, specifically:

a. The soft-pack lithium battery is placed in the battery placement slot of the tray, and the feeding manipulator 51 grabs the tray and transfers the soft-pack lithium battery to the tray conveyor belt 4 along with the tray;

b. The tray moves to the bottom of the first CCD image sensor 61 along with the tray conveyor belt 4, and the first CCD image sensor 61 scans the battery code of the soft pack lithium battery in the tray battery placement groove;

c. The tray scanned by the first CCD image sensor 61 moves with the tray conveyor belt 4 to the grasping position of the transfer transfer manipulator 53, and the transfer transfer manipulator 53 grabs the tray and sends the soft-packed lithium battery to the vacuum along with the tray In the lower test chamber 711 of the leak detection chamber 71;

d. Close the test upper cavity 712 of the vacuum leak detection cavity 71, the laser liner 73 marks the laser line on the surface of the soft-pack lithium battery, and the second CCD image sensor 72 collects the surface image signal of the soft-pack lithium battery;

e. Start the vacuum pump and vacuumize the inside of the vacuum leak detection chamber 71. The air pressure inside the vacuum leak detection chamber 71 must reach -90KPa;

f. The second CCD image sensor 72 collects the surface image signal of the deformed soft-pack lithium battery, and the main controller compares the image signal collected by the second CCD image sensor 72 before and after vacuuming to calculate the horizontal offset value of the laser line △ y, where, according to the projection angle value β of the laser liner 73 and according to the formula Δx=Δy×tanβ, the thickness change value Δx of the soft-pack lithium battery is calculated; when Δx>0.2mm, the soft-pack lithium battery There is air leakage; when △x<0.2mm, there is no air leakage in the soft pack lithium battery;

g. After the test is completed, the test upper cavity 712 of the vacuum leak detection cavity 71 is opened, and the transfer handling manipulator 53 grabs the tray and transfers the soft-packed lithium battery after the airtight test to the tray conveyor belt 4 along with the tray. ;

h. The tray moves with the tray conveyor belt 4 to the grabbing position of the unloading manipulator 52, and the unloading manipulator 52 grabs the tray and transfers the soft pack lithium battery along with the tray to the position of the tray unloading assembly 22;

i. The NG rejecting manipulator 31 grabs the leaky soft-pack lithium battery according to the battery code signal of the soft-pack lithium battery, and transmits the leaky soft-pack lithium battery to the NG output belt 32 .

Wherein, the time of step e vacuuming is less than 2s.

Through the air-tightness detection method of the soft-pack lithium battery, the utility model can efficiently complete the air-tightness detection of the soft-pack lithium battery, and is stable and reliable.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (6)

1. An air tightness testing machine for soft-pack lithium batteries, comprising a frame (1), characterized in that: it also includes a tray feeding assembly (21) installed on the feeding side of the frame (1), The tray unloading assembly (22) installed on the unloading side of the frame (1), the NG rejecting assembly (3) installed on the side of the tray unloading assembly (22), installed on the frame (1) The upper tray conveyor belt (4), the feeding manipulator (51) between the tray loading assembly (21) and the feeding side of the tray conveyor belt (4), the tray unloading assembly (22) The unloading manipulator (52) between the discharge side of the tray conveyor belt (4), the air tightness test assembly (7) installed on the upper end of the frame (1), and the tray conveyor belt (4) The transfer transfer manipulator (53) between the middle part and the air tightness test assembly (7); the side of the tray conveyor belt (4) is installed between the feeding manipulator (51) and the transfer transfer manipulator (53). The code scanning component (6), the code scanning component (6) includes a first CCD image sensor (61) for scanning the battery code of the soft-packed lithium battery on the tray; the air tightness testing component (7) includes a vacuum tester The leak chamber (71), the vacuum leak detection chamber (71) is equipped with a vacuum pump, the vacuum leak detection chamber (71) includes a test lower chamber (711) and can be opened and closed in the test lower chamber ( The upper test cavity (712) above 711), the lower test cavity (711) is installed on the frame (1), and the frame (1) is equipped with a second CCD above the vacuum leak detection cavity (71) An image sensor (72) and a laser marking device (73) obliquely projected on the soft-packed lithium battery; 21), feeding manipulator (51), tray conveyor belt (4), first CCD image sensor (61), transfer handling manipulator (53), vacuum pump, second CCD image sensor (72), laser marking device ( 73), the blanking manipulator (52), the tray blanking assembly (22), and the NG rejecting assembly (3) are electrically connected. 2. The airtightness testing machine for soft-pack lithium batteries according to claim 1, characterized in that: the NG rejecting component (3) includes an NG rejecting manipulator (31) and a NG removing manipulator (31) The NG output belt (32) on the discharge side and the NG rejecting manipulator (31) are electrically connected to the main control. 3. The air tightness testing machine for soft-pack lithium batteries according to claim 2, characterized in that: the tray loading assembly (21) and the tray unloading assembly (22) respectively include movable part (23) and the drive motor (24) installed on the frame (1), the movable part (23) is equipped with a first screw rod extending vertically, the power output shaft of the drive motor (24) and the first The first screw rod is driven and connected. The first screw rod is equipped with the first screw nut installed on the movable part (23). (24) Electrically connected to the main controller. 4. The air tightness testing machine for a soft-packed lithium battery according to claim 3, wherein two rows of battery placement slots arranged at even intervals are provided on the front of the tray, and the air tightness tester The component (7) includes two second CCD image sensors (72) respectively corresponding to the corresponding rows of soft-packed lithium batteries. 5. The air tightness testing machine for soft pack lithium batteries according to claim 4, characterized in that: the frame (1) corresponds to the first CCD image sensor (61) and the second CCD image The sensor (72) is equipped with a mounting frame (8) respectively, and the mounting frame (8) is equipped with a second screw mandrel extending vertically. The second screw mandrel is equipped with a stacked screw nut. There are fixed blocks, and the first CCD image sensor (61) and the second CCD image sensor (72) are installed on corresponding fixed blocks respectively. 6. The air tightness testing machine for soft-pack lithium batteries according to claim 4, characterized in that: the loading manipulator (51), the unloading manipulator (52) and the transfer handling manipulator (53 ) respectively include air claws and fixed brackets installed on the frame (1), each fixed bracket is respectively equipped with a servo motor, the fixed bracket is equipped with a third screw rod, and the power output shaft of the servo motor is connected to the corresponding The third screw rod is driven and connected. The third screw rod is equipped with a third screw nut. The third screw nut is equipped with an air claw holder. The air claw is installed on the corresponding air claw holder. Each servo motor is connected to the The main controller is electrically connected.

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