Polymer battery liquid injection pre-expanding tooling

Abstract

The utility model belongs to lithium ion battery technical field, concretely relates to a kind of polymer battery liquid injection pre-flaring tool, including bottom plate, setting on the bottom plate, and flaring execution mechanism;The flaring execution mechanism includes opening cylinder, upper flaring cylinder and lower flaring cylinder;The upper flaring cylinder is connected with the output end of the opening cylinder by an installation seat;The output end of the upper flaring cylinder and lower flaring cylinder is respectively connected with suction pad mounting plate, and the suction pad mounting plate is used for suction pad for adsorbing battery air bag and is set on each;The upper flaring cylinder and lower flaring cylinder are used to drive the suction pad of each to move towards to adsorb air bag upper and lower two sides, and reverse movement to pull open air bag to complete pre-flaring.The device uses the stable, controllable pulling force provided by cylinder to replace artificial flaring, completely avoids the problem of aluminum plastic shell deformation or air bag opening not complete due to improper force, effectively improves product quality and consistency.

Description

Technical Field

[0001] This utility model belongs to the field of lithium-ion battery technology, specifically relating to a pre-expansion tooling for polymer battery electrolyte injection. Background Technology

[0002] In the electrolyte filling process of polymer lithium batteries, the old-fashioned filling machines commonly used today cannot fully open the gas bag opening of the battery, forcing operators to manually pre-expand the opening during material loading. This manual expansion method not only introduces the risk of foreign matter contaminating the battery cavity, but also makes it difficult to precisely control the expansion force: too much force will cause deformation of the aluminum-plastic encapsulation shell, while too little force will prevent the base of the gas bag from fully expanding, ultimately causing electrolyte leakage during filling and producing a large number of defective products.

[0003] Furthermore, in the existing process, employees need to use handheld devices to scan codes after manually expanding the air bag, making the entire operation cumbersome and complex, which seriously affects production efficiency and consistency. Therefore, current technology lacks an integrated device that can stably and automatically complete the pre-expansion of the air bag and integrate code scanning function, and the above problems urgently need to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a pre-expansion tooling for polymer battery electrolyte injection, thereby solving the technical problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polymer battery liquid injection pre-expansion tooling, comprising a base plate, a feeding platform disposed on the base plate, and an expansion execution mechanism; The flaring actuator includes an opening cylinder, an upper flaring cylinder, and a lower flaring cylinder; The opening cylinder and the lower flaring cylinder are mounted on the base plate; The flared cylinder is connected to the output end of the opening cylinder via a mounting base; The output ends of the upper flared cylinder and the lower flared cylinder are respectively connected to suction cup mounting plates, and each suction cup mounting plate is provided with a suction cup for adsorbing the battery air bag. The upper and lower flaring cylinders are used to drive their respective suction cups to move towards each other to adsorb the upper and lower surfaces of the air bag, and to move in opposite directions to pull the air bag open to complete the pre-flaring.

[0006] Preferably, the device further includes a barcode reader and a barcode reader bracket for mounting the barcode reader, the barcode reader bracket being disposed on the base plate, and the scanning end of the barcode reader being directly opposite the battery placement position of the feeding platform.

[0007] Preferably, the extension and retraction direction of the opening cylinder is perpendicular to the extension and retraction direction of the upper flaring cylinder and the lower flaring cylinder.

[0008] Preferably, it also includes a solenoid valve and a pressure switch, wherein the solenoid valve is used to control the opening and closing of the air passage to the suction cup, and the pressure switch is used to monitor the vacuum pressure of the air passage.

[0009] Preferably, the mounting base is an upper flared cylinder mounting base.

[0010] Preferably, the suction cup is a vacuum suction cup made of a flexible material.

[0011] The beneficial effects of this utility model are as follows: On the one hand, by using the stable and controllable pulling force provided by the cylinder to replace manual flaring, the problem of deformation of the aluminum-plastic shell or incomplete opening of the air bag caused by improper force is completely avoided, effectively improving product quality and consistency; on the other hand, the entire flaring process is completed in a closed mechanical structure, eliminating the risk of foreign objects being introduced, and at the same time, the integrated automatic code reading function significantly reduces manual operation links, thereby improving overall production efficiency while ensuring production cleanliness. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0013] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0014] Please see Figure 1 The present invention provides a polymer battery liquid injection pre-expansion tooling, including a base plate 1, a feeding platform 2, a suction cup 3, a suction cup mounting plate 4, a code reader bracket 5, a code reader 6, an upper expansion cylinder mounting seat 7, an upper expansion cylinder 8, an opening cylinder 9, a lower expansion cylinder 10, a solenoid valve 11, and a pressure switch 12.

[0015] The opening cylinder 9 and the lower flaring cylinder 10 are directly fastened to the base plate 1 with screws. The upper flaring cylinder 8 is connected to the front end of the piston rod of the opening cylinder 9 via an upper flaring cylinder mounting seat 7, allowing the upper flaring cylinder 8 to be driven by the opening cylinder 9 to move up and down in a plane perpendicular to the base plate 1. The piston rod ends of the upper flaring cylinder 8 and the lower flaring cylinder 10 are respectively connected to the suction cup mounting plates 4 with screws, and each suction cup mounting plate 4 is equipped with one suction cup 3. These two suction cups 3 are arranged opposite each other and are used to adsorb the upper and lower surfaces of the battery air bag, respectively. The suction cups 3 are preferably vacuum suction cups made of flexible materials such as rubber to ensure adsorption effect and avoid scratching the product.

[0016] The barcode reader 6 is mounted on the base plate 1 via the barcode reader bracket 5. Its mounting position is precisely adjusted so that the scanning head of the barcode reader 6 can be directly facing the battery QR code area placed on the feeding platform 2.

[0017] In terms of pneumatic control, the solenoid valve 11 and pressure switch 12 are integrated into the pneumatic system. The solenoid valve 11 is used to control the opening and closing (i.e., "vacuuming" and "vacuum disconnection") of the vacuum passage leading to the two suction cups 3. The pressure switch 12 is used to monitor the pressure value of the vacuum passage in real time to ensure that the suction cups 3 have established a sufficient vacuum when adsorbing the air bag, thereby ensuring the reliability of adsorption.

[0018] The working process of this utility model is as follows: The operator places the polymer battery to be injected onto the feeding platform 2. After the battery is in place, the barcode reader 6 automatically triggers and reads the QR code on the battery, uploading the information to the production management system to complete the automatic barcode scanning.

[0019] Subsequently, the flaring process begins: First, the piston rod of the opening cylinder 9 retracts, causing the connected upper flaring cylinder 8 and the upper suction cup 3 to move upwards, making room for the lower flaring cylinder 10 and the suction cup 3. Next, the piston rod of the upper flaring cylinder 8 extends, and the piston rod of the lower flaring cylinder 10 also extends simultaneously, driving the upper and lower suction cup mounting plates 4 to move towards each other until the two suction cups 3 are tightly attached to the upper and lower surfaces of the battery gas bag. At this point, the solenoid valve 11 activates, opening the vacuum passage, and the two suction cups 3 firmly adhere to the gas bag under negative pressure.

[0020] After adsorption stabilizes, the piston rods of the upper flaring cylinder 8 and the lower flaring cylinder 10 retract synchronously, and the suction cup 3 applies a stable and uniform pulling force in both the upper and lower directions to smoothly pull open the air bag, completing the pre-flaring operation. The force is constant during this process, effectively avoiding the uncertainty of manual operation.

[0021] Finally, the solenoid valve 11 switches to a new state, cutting off the vacuum (i.e., "vacuum cut-off"), and the suction cup 3 loses its suction force and separates from the air bag. Then, the piston rod of the cylinder 9 extends, pushing the upper mechanism to reset, allowing the battery that has completed pre-expansion and barcode scanning to be removed for the next liquid filling process.

[0022] For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A pre-expansion tooling for polymer battery electrolyte injection, characterized in that, It includes a base plate (1), a feeding platform (2) disposed on the base plate (1), and a flaring actuator; The flaring actuator includes an opening cylinder (9), an upper flaring cylinder (8), and a lower flaring cylinder (10). The opening cylinder (9) and the lower flaring cylinder (10) are mounted on the base plate (1); The upper flaring cylinder (8) is connected to the output end of the opening cylinder (9) via a mounting base; The output ends of the upper flared cylinder (8) and the lower flared cylinder (10) are respectively connected to suction cup mounting plates (4), and each suction cup mounting plate (4) is provided with a suction cup (3) for adsorbing battery air bags. The upper flaring cylinder (8) and the lower flaring cylinder (10) are used to drive their respective suction cups (3) to move towards each other to adsorb the upper and lower sides of the air bag, and to move in opposite directions to pull the air bag open to complete the pre-flaring.

2. The polymer battery electrolyte filling pre-expansion tooling according to claim 1, characterized in that, It also includes a barcode reader (6) and a barcode reader bracket (5) for mounting the barcode reader (6), the barcode reader bracket (5) being mounted on the base plate (1), and the scanning end of the barcode reader (6) being directly opposite the battery placement position of the feeding platform (2).

3. The polymer battery electrolyte filling pre-expansion tooling according to claim 1, characterized in that, The extension and retraction direction of the opening cylinder (9) is perpendicular to the extension and retraction direction of the upper flaring cylinder (8) and the lower flaring cylinder (10).

4. The polymer battery electrolyte filling pre-expansion tooling according to claim 1, characterized in that, It also includes a solenoid valve (11) and a pressure switch (12), the solenoid valve (11) being used to control the opening and closing of the air passage to the suction cup (3), and the pressure switch (12) being used to monitor the vacuum pressure of the air passage.

5. The polymer battery electrolyte filling pre-expansion tooling according to claim 1, characterized in that, The mounting base is an upper flared cylinder mounting base (7).

6. A pre-expansion tooling for polymer battery electrolyte injection according to any one of claims 1 to 5, characterized in that, The suction cup (3) is a vacuum suction cup made of flexible material.

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