Battery cell blanking auxiliary mechanism and battery cell blanking pre-pressing device

Abstract

The utility model discloses a battery cell blanking auxiliary mechanism and a battery cell blanking pre-pressing device, and the battery cell blanking auxiliary mechanism comprises a supporting assembly used for supporting a pole piece at the upper half part of an inner ring of a battery cell; and the translation assembly is used for driving the supporting assembly to extend into or retreat from the interior of the inner ring of the battery cell. The battery cell blanking pre-pressing device comprises the battery cell blanking auxiliary mechanism, two blanking clamping jaws, two oppositely arranged pre-pressing plates and a third driving part used for driving the two pre-pressing plates to be close to or far away from each other, and the two blanking clamping jaws are used for clamping the left side and the right side of an inner ring of a battery cell respectively; the two pre-pressing plates are respectively positioned on the upper side and the lower side of the inner ring of the battery cell. According to the pre-pressing device, a pole piece and a diaphragm at the upper half part of the inner ring of the battery cell can be always supported during pre-pressing, the pole piece and the diaphragm at the upper half part of the inner ring of the battery cell are prevented from falling or loosening due to self weight, the pole piece and the diaphragm of the battery cell are prevented from wrinkling after pre-pressing, and the yield of the battery cell is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery winding equipment technology, specifically to a cell feeding auxiliary mechanism and a cell feeding pre-compression device. Background Technology

[0002] In the lithium battery production process, the electrode sheets and separator of the inner ring of the bare cell are first wound using a winding equipment. Then, the wound bare cell inner ring is clamped and cut using a cell feeding and pre-pressing device, and the upper and lower sides of the bare cell inner ring are pre-pressed and formed.

[0003] However, the width of bare cells varies greatly among different lithium battery products. During the pre-pressing process of wider bare cells, the electrodes and separators in the upper part of the inner ring of the bare cell are prone to falling down and loosening under their own weight. As a result, the electrodes and separators of the pre-pressed bare cell are prone to wrinkling, leading to short circuits and scrapping of the cell. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a battery cell feeding auxiliary mechanism and a battery cell feeding pre-pressing device, which can ensure that the electrode plates and separators of the upper half of the inner ring of the battery cell are always supported during pre-pressing, preventing the electrode plates and separators of the upper half of the inner ring of the battery cell from falling off or loosening due to their own weight, avoiding wrinkles in the electrode plates and separators of the battery cell after pre-pressing, and improving the yield of the battery cell.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A battery cell feeding auxiliary mechanism includes: a support assembly for supporting the electrode and separator of the upper half of the inner ring of the battery cell, including a support plate and a first driving member for driving the support plate to move up and down; and a translation assembly for driving the support assembly to extend into or out of the inner ring of the battery cell.

[0007] As a further improvement to the above technical solution, the translation component includes a first support and a second driving member for driving the first support to translate, and the support component is disposed on the first support.

[0008] As a further improvement to the above technical solution, the first driving component includes a first cylinder, which is mounted on the first bracket and is vertically arranged. The support plate is arranged at the telescopic end of the first cylinder.

[0009] As a further improvement to the above technical solution, a second bracket is provided between the first cylinder and the support plate.

[0010] As a further improvement to the above technical solution, the second bracket and the first bracket are slidably connected by a first linear guide rail, which is vertically arranged.

[0011] As a further improvement to the above technical solution, a first floating joint is connected between the telescopic end of the first cylinder and the second bracket.

[0012] As a further improvement to the above technical solution, a limiting block is provided on the first bracket, the limiting block being located directly below the second bracket, and the limiting block being used to limit the bottom of the second bracket when the first cylinder retracts.

[0013] As a further improvement to the above technical solution, the second driving component includes a second cylinder, which is horizontally arranged, and the first bracket is connected to the telescopic end of the second cylinder.

[0014] As a further improvement to the above technical solution, a second floating joint is connected between the telescopic end of the second cylinder and the first bracket.

[0015] A battery cell feeding and pre-pressing device includes the aforementioned battery cell feeding auxiliary mechanism, two feeding grippers, two opposing pre-pressing plates, and a third driving component for driving the two pre-pressing plates to move closer or further apart. The two feeding grippers are respectively used to clamp the left and right sides of the inner ring of the battery cell, and the two pre-pressing plates are respectively located on the upper and lower sides of the inner ring of the battery cell. The battery cell feeding auxiliary mechanism is located between the two pre-pressing plates.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a battery cell feeding auxiliary mechanism and a battery cell feeding pre-pressing device. First, two feeding jaws clamp the left and right sides of the inner ring of the battery cell, which can fix the inner ring of the battery cell. Then, the translation component drives the support component to extend into the inner ring of the battery cell. Then, the first driving component drives the support plate to rise, so that the support plate supports the electrode and separator of the upper half of the inner ring of the battery cell. Finally, the third driving component drives the two pre-pressing plates to move closer to each other. The two pre-pressing plates pre-press the upper and lower sides of the inner ring of the battery cell. At the same time, the first driving component drives the support plate to descend. The descending speed of the support plate is the same as the descending speed of the upper pre-pressing plate. Thus, it can ensure that the electrode and separator of the upper half of the inner ring of the battery cell are always supported during pre-pressing, preventing the electrode and separator of the upper half of the inner ring of the battery cell from falling or loosening due to their own weight, avoiding wrinkles in the electrode and separator of the battery cell after pre-pressing, and improving the yield of the battery cell. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a battery cell feeding and pre-compression device provided in an embodiment of this utility model;

[0019] Figure 2This is a schematic diagram of the structure of a battery cell feeding auxiliary mechanism provided in an embodiment of this utility model;

[0020] Figure 3 yes Figure 2 A structural diagram from another perspective.

[0021] Reference numerals: 100-Support assembly, 110-Support plate, 120-First drive component, 130-Second bracket, 140-First linear guide rail, 150-First floating joint, 160-Limiting block, 200-Translation assembly, 210-First bracket, 220-Second drive component, 230-Second floating joint, 240-Second linear guide rail, 300-Unloading gripper, 400-Pre-pressure plate, 500-Inner ring of battery cell. Detailed Implementation

[0022] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0023] Reference Figures 1 to 3 An example of this utility model provides a pre-pressing device for feeding battery cells, including two feeding claws 300, two pre-pressing plates 400 arranged opposite each other, and a third driving member (not shown in the figure) for driving the two pre-pressing plates 400 to move closer or further apart from each other. The two feeding claws 300 are used to clamp the left and right sides of the inner ring 500 of the battery cell, respectively, and the two pre-pressing plates 400 are located on the upper and lower sides of the inner ring 500 of the battery cell, respectively.

[0024] An example of this utility model also provides a cell feeding auxiliary mechanism, located between two pre-pressure plates 400, including a support component 100 and a translation component 200.

[0025] Functionally, the support component 100 is used to support the electrode and separator of the upper half of the inner ring 500 of the cell, and the translation component 200 is used to drive the support component 100 to extend into or out of the inner ring 500 of the cell.

[0026] Specifically, the support assembly 100 includes a support plate 110 and a first drive member 120 for driving the support plate 110 to rise and fall.

[0027] During pre-pressing, the two unloading jaws 300 first clamp the left and right sides of the inner ring 500 of the battery cell, thus fixing the inner ring 500. Next, the translation component 200 drives the support component 100 to extend into the inner ring 500. Then, the first driving component 120 drives the support plate 110 to rise, allowing the support plate 110 to support the upper part of the electrode and separator of the inner ring 500. Finally, the third driving component drives the two pre-pressing plates 400 to move closer together, causing the two pre-pressing plates 400 to... The upper and lower sides of the inner ring 500 of the battery cell are pre-pressed. At the same time, the first driving component 120 drives the support plate 110 to descend. The descending speed of the support plate 110 is the same as that of the pre-pressing plate 400 above. This ensures that the electrode and separator of the upper part of the inner ring 500 of the battery cell are always supported during pre-pressing, preventing the electrode and separator of the upper part of the inner ring 500 of the battery cell from falling off or loosening due to their own weight. This also avoids wrinkling of the electrode and separator of the battery cell after pre-pressing, thereby improving the yield of the battery cell.

[0028] In some preferred embodiments, the translation component 200 includes a first bracket 210 and a second drive member 220 for driving the first bracket 210 to translate. The support component 100 is disposed on the first bracket 210, thereby facilitating the installation of the support component 100.

[0029] In some preferred embodiments, the first driving component 120 includes a first cylinder, which is mounted on the first bracket 210 and is vertically arranged. The support plate 110 is arranged at the telescopic end of the first cylinder. The first cylinder has a simple structure, low manufacturing and maintenance costs, and rapid operation, which can realize the rapid lifting and lowering of the support plate 110, thereby improving work efficiency.

[0030] Furthermore, a second bracket 130 is provided between the first cylinder and the support plate 110. The second bracket 130 facilitates the installation of the support plate 110 and the layout of the support plate 110, thereby improving the installation flexibility of the support plate 110.

[0031] Furthermore, the second bracket 130 is slidably connected to the first bracket 210 via the first linear guide rail 140. The first linear guide rail 140 is vertically arranged and can provide guidance for the second bracket 130. When the first cylinder drives the second bracket 130 and the support plate 110 to rise and fall together, the second bracket 130 and the support plate 110 can move along the length direction of the first linear guide rail 140, thereby avoiding the support plate 110 from shaking or swaying during the lifting and lowering process, and improving the stability of the support plate 110 during the lifting and lowering process.

[0032] In some preferred embodiments, a first floating joint 150 is connected between the telescopic end of the first cylinder and the second bracket 130. The first floating joint 150 can absorb the lateral deviation between the telescopic end of the first cylinder and the second bracket 130, and can also achieve angular compensation between the telescopic end of the first cylinder and the second bracket 130. Thus, it can protect the first cylinder and the second bracket 130 or the first linear guide 140 from damage and improve the service life of the equipment.

[0033] In some preferred embodiments, a limiting block 160 is provided on the first support 210. The limiting block 160 is located directly below the second support 130. The limiting block 160 is used to limit the bottom of the second support 130 when the first cylinder retracts, thereby preventing the first cylinder from exceeding the set safety range when retracting and avoiding damage to the equipment.

[0034] In some preferred embodiments, the second drive component 220 includes a second cylinder, which is horizontally positioned. The first bracket 210 is connected to the telescopic end of the second cylinder. The second cylinder has a simple structure, low manufacturing and maintenance costs, and rapid operation, which enables the first bracket 210 to move quickly, thus improving work efficiency.

[0035] Furthermore, a second linear guide rail 240 is connected to the first bracket 210. The second linear guide rail 240 can provide guidance for the first bracket 210. When the second cylinder drives the first bracket 210 and the support assembly 100 to move together, the first bracket 210 and the support assembly 100 can move along the length direction of the second linear guide rail 240. This avoids the support assembly 100 from shaking or swaying during the translation process, improves the stability of the support assembly 100 during translation, and ensures the accurate positioning of the support plate 110.

[0036] Furthermore, a second floating joint 230 is connected between the telescopic end of the second cylinder and the first support 210. The second floating joint 230 can absorb the lateral deviation between the telescopic end of the second cylinder and the first support 210, and can also achieve angular compensation between the telescopic end of the second cylinder and the first support 210. Thus, it can protect the second cylinder and the first support 210 from damage and improve the service life of the equipment.

[0037] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A battery cell feeding auxiliary mechanism, characterized in that, include: The support assembly (100) is used to support the electrode and diaphragm of the upper half of the inner ring (500) of the battery cell, including a support plate (110) and a first drive member (120) for driving the support plate (110) to rise and fall. Translation component (200) is used to drive the support component (100) to extend into or out of the inner ring (500) of the cell.

2. The cell feeding auxiliary mechanism according to claim 1, characterized in that, The translation component (200) includes a first support (210) and a second drive member (220) for driving the first support (210) to translate, and the support component (100) is disposed on the first support (210).

3. The cell feeding auxiliary mechanism according to claim 2, characterized in that, The first driving component (120) includes a first cylinder, which is mounted on the first bracket (210) and is vertically arranged. The support plate (110) is arranged at the telescopic end of the first cylinder.

4. The cell feeding auxiliary mechanism according to claim 3, characterized in that, A second bracket (130) is provided between the first cylinder and the support plate (110).

5. The cell feeding auxiliary mechanism according to claim 4, characterized in that, The second bracket (130) is slidably connected to the first bracket (210) via a first linear guide rail (140), which is vertically arranged.

6. The cell feeding auxiliary mechanism according to claim 4, characterized in that, A first floating joint (150) is connected between the telescopic end of the first cylinder and the second bracket (130).

7. The cell feeding auxiliary mechanism according to claim 4, characterized in that, A limiting block (160) is provided on the first bracket (210), the limiting block (160) is located directly below the second bracket (130), and the limiting block (160) is used to limit the bottom of the second bracket (130) when the first cylinder retracts.

8. The cell feeding auxiliary mechanism according to claim 2, characterized in that, The second drive unit (220) includes a second cylinder, which is horizontally arranged, and the first bracket (210) is connected to the telescopic end of the second cylinder.

9. The cell feeding auxiliary mechanism according to claim 8, characterized in that, A second floating joint (230) is connected between the telescopic end of the second cylinder and the first bracket (210).

10. A pre-compression device for battery cell feeding, characterized in that, The device includes a cell feeding auxiliary mechanism as described in any one of claims 1 to 9, two feeding grippers (300), two opposing pre-pressure plates (400), and a third driving member for driving the two pre-pressure plates (400) to move closer or further apart from each other. The two feeding grippers (300) are respectively used to clamp the left and right sides of the inner ring (500) of the cell. The two pre-pressure plates (400) are respectively located on the upper and lower sides of the inner ring (500) of the cell. The cell feeding auxiliary mechanism is located between the two pre-pressure plates (400).

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