Online VOC detection equipment with self-cleaning function

Abstract

The utility model discloses online VOC (volatile organic compound) detection equipment with a self-cleaning function, which comprises a bottom frame, a worktable arranged on the bottom frame, and a feeding mechanism, a jig front-back moving mechanism, a VOC leak detection mechanism, a feeding and discharging manipulator and a discharging mechanism which are arranged on the worktable, the jig front-back moving mechanism comprises a front-back moving module and a long wire soft package lithium ion battery placing jig movably arranged on the front-back moving module, a feeding and discharging station and a leakage detecting station are arranged on the front portion and the rear portion of the front-back moving module, and the feeding mechanism and the discharging mechanism are located on the two sides of the feeding and discharging station of the front-back moving module respectively. The VOC leak hunting mechanism is located above the leak hunting station of the front-back moving module, and the feeding and discharging mechanical arm is located between the feeding mechanism and the discharging mechanism. The leak detection device is specially used for leak detection of the long-wire soft-package lithium ion battery, can replace manual work to automatically detect the battery, is simple and rapid in detection and high in working efficiency, has a gas circuit self-cleaning function, and ensures the detection quality.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing equipment, and in particular to an online VOC detection device with a self-cleaning function. Background Art

[0002] The sealing of the battery directly determines the safety performance of the battery. Poor sealing may lead to dangerous situations such as electrolyte leakage, shell expansion, fire and explosion, which will bring great losses to battery companies and consumers. In view of the above situation, it is extremely important to detect the sealing performance of each battery. However, the battery leakage port is relatively small. If it is detected manually, the detection is difficult and inefficient. Therefore, how to quickly detect whether the battery is leaking is an important part of ensuring battery safety. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an online VOC detection device with a self-cleaning function, which is specially used for leak detection of long-wire soft-pack lithium-ion batteries. It can replace manual automatic detection of batteries, and the detection is simple and fast, which can greatly improve work efficiency, and has a gas path self-cleaning function, thereby ensuring the detection quality.

[0004] The technical solution of the utility model is as follows:

[0005] An online VOC detection device with a self-cleaning function comprises a bottom frame, a workbench arranged on the bottom frame, a feeding mechanism arranged on the workbench, a jig forward and backward moving mechanism, a VOC leak detection mechanism, a loading and unloading manipulator and a unloading mechanism, wherein the jig forward and backward moving mechanism is provided with two on the left and right sides, and comprises a forward and backward moving module and a long wire soft-pack lithium-ion battery placement jig movably arranged on the forward and backward moving module, the forward and backward moving module is provided with loading and unloading stations and leak detection stations in front and behind, the feeding mechanism and the unloading mechanism are respectively located on both sides of the loading and unloading stations of the two jig forward and backward moving mechanisms, and the VOC The leak detection mechanism is located above the leak detection station of the two fixture forward and backward moving mechanisms, and the loading and unloading manipulator is located between the loading mechanism and the unloading mechanism. The long-wire soft-pack lithium-ion battery is moved from the loading mechanism to the long-wire soft-pack lithium-ion battery placement fixture by the loading and unloading manipulator, and then driven to move to the leak detection station by the forward and backward moving module. The VOC leak detection mechanism performs a leak detection on the long-wire soft-pack lithium-ion battery on the long-wire soft-pack lithium-ion battery placement fixture, and after the detection is completed, it is driven back to the loading and unloading station by the forward and backward moving module, and is carried to the unloading mechanism by the loading and unloading manipulator for unloading;

[0006] The VOC leak detection mechanism includes a high-pressure input valve, a left-chamber high-pressure valve, a left-chamber VOC detection valve, a right-chamber high-pressure valve, a right-chamber VOC detection valve, a tester inflation valve, a tester, a low-pressure input valve, a first proportional valve, a second proportional valve, a third proportional valve, a left-chamber low-pressure valve, a right-chamber low-pressure valve, a left upper mold cavity, a right upper mold cavity, a left-chamber vacuum valve and a right-chamber vacuum valve. The left upper mold cavity and the right upper mold cavity are respectively movably arranged above two long-wire soft-pack lithium-ion battery placement fixtures. The left upper mold cavity and the right upper mold cavity are both provided with a high-pressure test interface, a low-pressure test interface and a vacuum interface. The high-pressure input valve is connected to the high-pressure test interface gas path of the left upper mold cavity through the left-chamber high-pressure valve and the left-chamber VOC detection valve in turn. The high-pressure input valve is connected to the high-pressure test interface gas path of the left upper mold cavity in turn through the left-chamber high-pressure valve and the left-chamber VOC detection valve. The high-pressure test interface air circuit of the right upper mold cavity is connected through the right-cavity high-pressure valve and the right-cavity VOC detection valve. The tester is respectively connected to the left-cavity VOC detection valve and the right-cavity VOC detection valve air circuits through the tester inflation valve. The low-pressure input valve is connected to the low-pressure test interface air circuit of the left upper mold cavity through the first proportional valve and the left-cavity low-pressure valve in sequence. The low-pressure input valve is connected to the low-pressure test interface air circuit of the right upper mold cavity through the second proportional valve and the right-cavity low-pressure valve in sequence. The third proportional valve air circuit is connected between the first proportional valve, the second proportional valve and the tester inflation valve. The vacuum interface of the left upper mold cavity is provided with a left-cavity vacuum valve. The vacuum interface of the right upper mold cavity is provided with a right-cavity vacuum valve. The left-cavity vacuum valve and the right-cavity vacuum valve are connected to negative pressure.

[0007] Furthermore, the upper left mold cavity and the upper right mold cavity are each provided with two high-pressure test interfaces, and the two high-pressure test interfaces are respectively distributed on the left and right sides of the upper left mold cavity and the upper right mold cavity.

[0008] Furthermore, the long-wire soft-pack lithium-ion battery placement fixture is provided with a plurality of groups of long-wire soft-pack lithium-ion battery placement positions, and each group of long-wire soft-pack lithium-ion battery placement positions can stagger two long-wire soft-pack lithium-ion batteries, and the long wire parts of the two long-wire soft-pack lithium-ion batteries are respectively located on both sides of the long-wire soft-pack lithium-ion battery placement positions, and the battery cell parts of the two long-wire soft-pack lithium-ion batteries are placed separated front and back.

[0009] Furthermore, the loading and unloading robot includes a left and right moving module and a loading robot and a unloading robot which are movably arranged on the left and right moving modules respectively. The loading robot and the unloading robot both include a lifting cylinder, a rotating cylinder and a vacuum suction cup assembly. The cylinder shaft of the lifting cylinder is downwardly connected to the rotating cylinder, and the vacuum suction cup assembly is rotatably connected to the bottom of the rotating cylinder.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) The utility model is specially used for leak detection of long-wire soft-pack lithium-ion batteries. It can replace manual automatic detection of batteries. During operation, the long-wire soft-pack lithium-ion batteries are moved from the loading mechanism to the long-wire soft-pack lithium-ion battery placement fixture by the loading and unloading manipulator, and then driven to the leak detection station by the forward and backward moving module. Then, the long-wire soft-pack lithium-ion batteries on the long-wire soft-pack lithium-ion battery placement fixture are leak-tested by the VOC leak detection mechanism. After the detection is completed, they are driven back to the loading and unloading station by the forward and backward moving module, and are moved to the unloading mechanism by the loading and unloading manipulator for unloading. This method is simpler than manual detection and can be completed quickly, greatly improving work efficiency.

[0012] (2) The gas path design of the VOC leak detection mechanism has a gas path self-cleaning function, thereby ensuring the detection quality of each leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a structural schematic diagram of an online VOC detection device with a self-cleaning function provided by the utility model;

[0015] Figure 2 This is a structural schematic diagram of a long-wire soft-pack lithium-ion battery placement fixture of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the loading and unloading manipulator of the utility model;

[0017] Figure 4 It is a gas circuit diagram of the VOC leak detection mechanism of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0020] Example

[0021] See also Figure 1 This embodiment provides an online VOC detection device with a self-cleaning function, including a bottom frame 1, a workbench 2 arranged on the bottom frame 1, a loading mechanism 3 arranged on the workbench 2, a fixture forward and backward moving mechanism 4, a VOC leak detection mechanism 5, a loading and unloading manipulator 6 and a unloading mechanism 7. Among them, there are two fixture forward and backward moving mechanisms 4 on the left and right, and the fixture forward and backward moving mechanism 4 includes a forward and backward moving module 41 and a long wire soft-pack lithium-ion battery placement fixture 42 movably arranged on the forward and backward moving module 41. Combined with Figure 2 As shown, a plurality of groups of long-wire soft-pack lithium-ion battery placement positions 421 are provided on the long-wire soft-pack lithium-ion battery placement fixture 42. Each group of long-wire soft-pack lithium-ion battery placement positions 421 can stagger two long-wire soft-pack lithium-ion batteries 100. The long wire parts of the two long-wire soft-pack lithium-ion batteries 100 are respectively located on both sides of the long-wire soft-pack lithium-ion battery placement positions 421. The battery cell parts of the two long-wire soft-pack lithium-ion batteries 100 are separated and placed front and back. Through this staggered placement, more batteries can be placed and the production capacity is higher. The front and rear moving modules 41 are provided with loading and unloading stations and leak detection stations. The loading mechanism 3 and the unloading mechanism 7 are respectively located on both sides of the loading and unloading stations of the two fixture front and rear moving mechanisms 41. The VOC leak detection mechanism 5 is located above the leak detection station of the two fixture front and rear moving mechanisms 41. The loading and unloading manipulator 6 is located between the loading mechanism 3 and the unloading mechanism 7. Figure 3 As shown, the loading and unloading robot 6 includes a left and right moving module 61 and a loading robot 62 and a unloading robot 63 which are movably arranged on the left and right moving module 61 respectively. The loading robot 62 and the unloading robot 63 both include a lifting cylinder 631, a rotating cylinder 632 and a vacuum suction cup assembly 633. The cylinder shaft of the lifting cylinder 631 is downwardly connected to the rotating cylinder 632, and the vacuum suction cup assembly 633 is rotatably connected to the bottom of the rotating cylinder 632. The loading robot 62 is responsible for loading batteries, and the unloading robot 63 is responsible for unloading batteries. Batteries placed in different directions can be driven to rotate by the rotating cylinder 632.

[0022] Working process: The long-wire soft-pack lithium-ion battery 100 is transported from the feeding mechanism 3 to the long-wire soft-pack lithium-ion battery placement position 421 of the long-wire soft-pack lithium-ion battery placement fixture 42 by the feeding manipulator 62, and is placed according to the battery placement position of the long-wire soft-pack lithium-ion battery placement position 421 in combination with the rotating cylinder 632. After the long-wire soft-pack lithium-ion battery placement position 421 of the long-wire soft-pack lithium-ion battery placement fixture 42 is full, it is driven to move to the leak detection station by the forward and backward moving module 41, and then The VOC leak detection mechanism 5 performs a leak detection on the long-wire soft-pack lithium-ion battery 100 on the long-wire soft-pack lithium-ion battery placement fixture 42. After the detection is completed, it is driven by the forward and backward moving module 41 to return to the loading and unloading station, and waits for the unloading robot 63 to transport it to the unloading mechanism 7 for unloading. At the same time, according to whether the placement direction of the battery needs to be adjusted, the direction is adjusted by the rotating cylinder 632 before unloading. The two long-wire soft-pack lithium-ion battery placement fixtures 42 can perform loading and unloading operations respectively, which greatly improves work efficiency.

[0023] Combination Figure 4As shown, the VOC leak detection mechanism 5 includes a high-pressure input valve 501, a left-chamber high-pressure valve 502, a left-chamber VOC detection valve 503, a right-chamber high-pressure valve 504, a right-chamber VOC detection valve 505, a tester inflation valve 506, a tester 507, a low-pressure input valve 508, a first proportional valve 509, a second proportional valve 510, a third proportional valve 511, a left-chamber low-pressure valve 512, a right-chamber low-pressure valve 513, a left upper mold cavity 514, a right upper mold cavity 515, a left-chamber vacuum valve 516 and a right-chamber vacuum valve 517, and a left upper mold cavity 518. The cavity 514 and the upper right mold cavity 515 are respectively movably arranged above the two long wire soft-pack lithium-ion battery placement fixtures 42. The upper left mold cavity 514 and the upper right mold cavity 515 are both provided with a high-pressure test interface 518, a low-pressure test interface 519 and a vacuum interface. The upper left mold cavity 514 and the upper right mold cavity 515 are both provided with two high-pressure test interfaces 518, which are respectively distributed on the left and right sides of the upper left mold cavity 514 and the upper right mold cavity 515. The high-pressure input valve 501 is sequentially connected through the left cavity high-pressure valve 502 and the left cavity VOC detection valve 509. 3 is connected to the two high-pressure test interfaces 518 of the left upper mold cavity 514 by gas circuit, the high-pressure input valve 501 is connected to the two high-pressure test interfaces 518 of the right upper mold cavity 515 by gas circuit through the right cavity high-pressure valve 504 and the right cavity VOC detection valve 505 in turn, the tester 507 is connected to the left cavity VOC detection valve 503 and the right cavity VOC detection valve 505 by gas circuit through the tester inflation valve 506, the low-pressure input valve 508 is connected to the low-pressure test interface 519 of the left upper mold cavity 514 by gas circuit through the first proportional valve 509 and the left cavity low-pressure valve 512 in turn. The air circuit is connected, the low-pressure input valve 508 is connected to the low-pressure test interface 519 of the right upper mold cavity 515 through the second proportional valve 510 and the right cavity low-pressure valve 513 in turn, the third proportional valve 511 is connected between the first proportional valve 509, the second proportional valve 510, and the tester charging valve 506, the vacuum interface of the left upper mold cavity 514 is provided with a left cavity vacuum valve 516, the vacuum interface of the right upper mold cavity 515 is provided with a right cavity vacuum valve 517, and the left cavity vacuum valve 516 and the right cavity vacuum valve 517 are connected to negative pressure. Action flow: mold closing → cleaning → vacuum → vacuum pressure holding → high positive pressure filling → low positive pressure filling → positive pressure and low pressure → testing → mold opening.The solenoid valve action of the left upper mold cavity 514: mold closing → left cavity low-pressure valve 512 / left cavity high-pressure valve 502 / left cavity VOC detection valve 503 / left cavity vacuum valve 516 (8S) → left cavity vacuum valve 516 (to -98KPa) → left cavity vacuum valve 516 closed (6S) → left cavity low-pressure valve 512 / left cavity high-pressure valve 502 / left cavity VOC detection valve 503 (to low negative pressure -10KPa) → left cavity low-pressure valve 512 → left cavity low-pressure valve 512 closed (to low positive pressure, +5KPa, 5S) → left cavity low-pressure valve 512 / left cavity VOC detection valve 503 / tester inflation valve 506 (the tester inflation valve 506 is actuated after the left cavity VOC detection valve 503 is actuated for 1S) → start testing → left cavity low-pressure valve / left cavity VOC detection valve 503 / tester inflation valve 506 are closed → mold opening. Action of the solenoid valve of the right upper mold cavity 515: mold closing → right cavity low-pressure valve 513 / right cavity high-pressure valve 504 / right cavity VOC detection valve 505 / right cavity vacuum valve 517 (8S) → right cavity vacuum valve 517 (to -98KPa) → right cavity vacuum valve 517 closed (6S) → right cavity low-pressure valve 513 / right cavity high-pressure valve 504 / right cavity VOC detection valve 505 (to low negative pressure -10KPa) → right cavity low-pressure valve 513 → right cavity low-pressure valve 513 closed (to low positive pressure, +5KPa, 5S) → right cavity low-pressure valve 513 / right cavity VOC detection valve 505 / tester inflation valve 506 (the tester inflation valve 506 acts after the right cavity VOC detection valve 505 acts for 1S) → start testing → right cavity low-pressure valve 513 / right cavity VOC detection valve 505 / tester inflation valve 506 close → open mold.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An online VOC detection device with self-cleaning function, characterized by: It includes a bottom frame, a workbench arranged on the bottom frame, a feeding mechanism arranged on the workbench, a jig forward and backward moving mechanism, a VOC leak detection mechanism, a loading and unloading manipulator and a unloading mechanism. The jig forward and backward moving mechanism is provided with two on the left and right sides, and includes a forward and backward moving module and a long wire soft-pack lithium-ion battery placement jig movably arranged on the forward and backward moving module. The forward and backward moving module is provided with loading and unloading stations and leak detection stations in front and behind. The feeding mechanism and the unloading mechanism are respectively located on both sides of the loading and unloading stations of the two jig forward and backward moving mechanisms. The VOC leak detection mechanism is located at the two jigs. The loading and unloading manipulator is located between the loading and unloading mechanism, and the long-wire soft-pack lithium-ion battery is moved from the loading mechanism to the long-wire soft-pack lithium-ion battery placement fixture by the loading and unloading manipulator, and then driven to move to the leak detection station by the forward and backward moving module, and the VOC leak detection mechanism performs a leak detection on the long-wire soft-pack lithium-ion battery on the long-wire soft-pack lithium-ion battery placement fixture. After the detection is completed, it is driven back to the loading and unloading station by the forward and backward moving module, and is moved to the unloading mechanism by the loading and unloading manipulator for unloading; The VOC leak detection mechanism includes a high-pressure input valve, a left-chamber high-pressure valve, a left-chamber VOC detection valve, a right-chamber high-pressure valve, a right-chamber VOC detection valve, a tester inflation valve, a tester, a low-pressure input valve, a first proportional valve, a second proportional valve, a third proportional valve, a left-chamber low-pressure valve, a right-chamber low-pressure valve, a left upper mold cavity, a right upper mold cavity, a left-chamber vacuum valve and a right-chamber vacuum valve. The left upper mold cavity and the right upper mold cavity are respectively movably arranged above two long-wire soft-pack lithium-ion battery placement fixtures. The left upper mold cavity and the right upper mold cavity are both provided with a high-pressure test interface, a low-pressure test interface and a vacuum interface. The high-pressure input valve is connected to the high-pressure test interface gas path of the left upper mold cavity through the left-chamber high-pressure valve and the left-chamber VOC detection valve in turn. The high-pressure input valve is connected to the high-pressure test interface gas path of the left upper mold cavity in turn through the left-chamber high-pressure valve and the left-chamber VOC detection valve. The high-pressure test interface air circuit of the right upper mold cavity is connected through the right-cavity high-pressure valve and the right-cavity VOC detection valve. The tester is respectively connected to the left-cavity VOC detection valve and the right-cavity VOC detection valve air circuits through the tester inflation valve. The low-pressure input valve is connected to the low-pressure test interface air circuit of the left upper mold cavity through the first proportional valve and the left-cavity low-pressure valve in sequence. The low-pressure input valve is connected to the low-pressure test interface air circuit of the right upper mold cavity through the second proportional valve and the right-cavity low-pressure valve in sequence. The third proportional valve air circuit is connected between the first proportional valve, the second proportional valve and the tester inflation valve. The vacuum interface of the left upper mold cavity is provided with a left-cavity vacuum valve. The vacuum interface of the right upper mold cavity is provided with a right-cavity vacuum valve. The left-cavity vacuum valve and the right-cavity vacuum valve are connected to negative pressure.

2. The online VOC detection device with self-cleaning function according to claim 1, characterized in that: The upper left mold cavity and the upper right mold cavity are each provided with two high-pressure test interfaces, and the two high-pressure test interfaces are respectively distributed on the left and right sides of the upper left mold cavity and the upper right mold cavity.

3. The online VOC detection device with self-cleaning function according to claim 1 is characterized in that: The long-wire soft-pack lithium-ion battery placement fixture is provided with a plurality of groups of long-wire soft-pack lithium-ion battery placement positions, and each group of long-wire soft-pack lithium-ion battery placement positions can stagger two long-wire soft-pack lithium-ion batteries, and the long wire parts of the two long-wire soft-pack lithium-ion batteries are respectively located on both sides of the long-wire soft-pack lithium-ion battery placement positions, and the battery core parts of the two long-wire soft-pack lithium-ion batteries are placed separated from each other front and back.

4. The online VOC detection device with self-cleaning function according to claim 1 is characterized in that: The loading and unloading robot includes a left and right moving module and a loading robot and a unloading robot which are movably arranged on the left and right moving modules respectively. The loading robot and the unloading robot both include a lifting cylinder, a rotating cylinder and a vacuum suction cup assembly. The cylinder shaft of the lifting cylinder is downwardly connected to the rotating cylinder, and the vacuum suction cup assembly is rotatably connected to the bottom of the rotating cylinder.

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