A protective sheet feeding device and a battery tab protective sheet feeding method

Abstract

This invention provides a protective sheet loading device and a battery tab protective sheet loading method, belonging to the field of battery processing technology. The invention includes a loading / unloading mechanism for picking up protective sheets; a conveying mechanism for moving the loading / unloading mechanism from a first position to a second position; and a detection mechanism for detecting qualified and unqualified protective sheets at the second position. When the protective sheet at the second position is qualified, the conveying mechanism moves the loading / unloading mechanism from the second position to the tab position. Before placing the protective sheet on the tab, qualified and unqualified products can be screened, and unqualified products can be rejected, preventing poor soldering and improving the accuracy of battery processing.

Description

Technical Field

[0001] This invention belongs to the field of battery processing technology, and in particular to a protective sheet feeding device and a battery tab protective sheet feeding method. Background Technology

[0002] During the production of lithium-ion batteries, the tabs are prone to breakage due to weld cracks during welding, and the internal resistance of the tabs is also prone to be too high due to poor welding. To solve these problems, a protective sheet is often added at the tab welding point.

[0003] In existing processing procedures, the protective sheet is typically placed horizontally in a material trough with an open top. When needed, it is vacuum-adsorbed from the top of the trough and then moved to the welding station. The drawbacks of this process are: the protective sheet is not pre-tested, leading to the collection of substandard sheets and impacting processing efficiency. Furthermore, the current process involves directly wrapping the tab with the protective sheet. During laser processing, external forces act directly on the protective sheet, which then transmits these forces to the outermost surface of the tab. Without support, the tab is easily shattered or cracked under these forces, potentially generating metal debris and affecting battery quality. Summary of the Invention

[0004] To address the technical problems of low automation and low processing efficiency in existing technologies, the following is proposed:

[0005] A protective sheet feeding device is proposed, comprising:

[0006] The system includes: a loading and unloading mechanism for picking up protective sheets; a transport mechanism for moving the protective sheets using the loading and unloading mechanism; a shaking module for shaking the picked-up protective sheets; a detection mechanism for detecting qualified and unqualified protective sheets; when the protective sheet is qualified, the loading and unloading mechanism places the protective sheet at the battery's tab position; a motor is provided to drive the rotation of an eccentric wheel, and the height difference generated when the eccentric wheel rotates causes the protective sheets picked up by the loading and unloading mechanism to shake, preventing overlapping.

[0007] A protective sheet feeding device is proposed, comprising a clip mechanism for transporting the protective sheet to a first position; a loading and unloading mechanism for picking up the protective sheet; a conveying mechanism for moving the loading and unloading mechanism from the first position to a second position; and a secondary positioning mechanism for pre-processing the protective sheet located at the second position. After pre-processing, the protective sheet changes from a straight "I" shape to an inverted "V" shape with both sides raised and the upper horizontal width greater than the bottom horizontal width.

[0008] The loading and unloading mechanism sucks the inverted "r-shaped" protection sheet and places it on the tab. Specifically, the tab is located below the through hole of the cover plate of the battery. The bottom of the inverted "r-shaped" protection sheet abuts against the tab, and the upper part is located on the cover plate of the battery. The cover plate is used to press the tab. During welding, under the pressing force of the cover plate, the vibration of the tab can be reduced, thereby reducing the probability of the tab being broken or cracked by vibration.

[0009] Optionally, a fixture mechanism is provided for positioning the battery.

[0010] Optionally, the secondary positioning mechanism includes an upper base and a lower base. The upper base and the lower base are connected and supported by a connecting rod. A positioning seat is installed on the upper base, and the positioning seat has a groove for placing the protection sheet.

[0011] Optionally, a through hole is provided at the bottom of the groove. When the protection sheet is placed in the groove, the through hole is located below the protection sheet.

[0012] Optionally, the area of the through hole is smaller than the area of the bottom of the groove.

[0013] Optionally, the groove is composed of two parts. One part is the first placement groove, and the other part is the second placement groove. The length of the long side of the second placement groove is greater than the length of the long side of the first placement groove, and the depth of the second placement groove in the vertical direction is greater than the depth of the first placement groove in the vertical direction.

[0014] A protection sheet loading device is provided, including: <000003​​​​​​​​​​​​Provided is a method for loading a protection sheet, and the steps of this method can be executed by any one of the above-mentioned protection sheet loading devices, including:

[0020] Step S10: Stamping the "one"-shaped protection sheet to obtain an inverted "r"-shaped protection sheet;

[0021] Step S20: Placing the inverted "r"-shaped protection sheet on the tab, specifically, the tab is located below the through hole of the cover plate, the bottom of the inverted "r"-shaped protection sheet is located on the tab, and the upper part is located on the cover plate.

[0022] Advantages of the present invention: Before placing the protection sheet on the tab, it is possible to screen qualified and unqualified products, eliminate unqualified products, improve the accuracy of battery processing, prevent false soldering, and thus improve production efficiency. After pretreatment, the protection sheet changes from a "one" shape to an inverted "r" shape with both sides翘起 and the horizontal width of the upper part being greater than the horizontal width of the bottom, which can solve the problem of the protection sheet slipping and improve the loading accuracy. The loading and unloading mechanism has both the functions of loading and unloading and stamping the "one"-shaped protection sheet. Implementing two functions through one mechanism can reduce the complexity of the equipment and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the magazine mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the handling mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the loading and unloading mechanism and the handling mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the secondary positioning mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the secondary positioning mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the clamping mechanism of the present invention;

[0031] Figure 9 It is a schematic diagram of the "one"-shaped and inverted "r"-shaped protection sheets of the present invention. EMBODIMENTS

[0032] The following is combined with the description of the accompanying drawings Figure 1-8, a description of the implementation mode is given:

[0033] In one embodiment, a protection sheet loading device is provided, which is provided with a magazine mechanism 1 for transporting the protection sheet to a first position; a loading and unloading mechanism 2 for sucking the protection sheet; a handling mechanism 4 for driving the loading and unloading mechanism 2 to move from the first position to a second position; a detection mechanism for detecting qualified and unqualified protection sheets at the second position; when the protection sheet at the second position is qualified, the handling mechanism 4 drives the loading and unloading mechanism 2 to transport and place it at the position where the tab is located. Before placing the protection sheet on the tab, it is possible to screen qualified and unqualified products, eliminate unqualified products, prevent false soldering, and improve the accuracy of battery processing. In one embodiment, a loading and unloading mechanism for sucking the protection sheet; a handling mechanism for driving the loading and unloading mechanism to transport the protection sheet; a shaking module for shaking the sucked protection sheet; a detection mechanism for detecting qualified and unqualified protection sheets; when the protection sheet is qualified, the loading and unloading mechanism is used to place the protection sheet at the tab position of the battery; a motor for driving the eccentric wheel to rotate is provided, and the height difference generated when the eccentric wheel rotates is used to drive the protection sheet adsorbed by the loading and unloading mechanism to shake, preventing double sheets.

[0034] In one embodiment, a protection sheet loading device is provided, which is provided with a magazine mechanism 1 for transporting the protection sheet to a first position; a loading and unloading mechanism 2 for sucking the protection sheet; a handling mechanism 4 for driving the loading and unloading mechanism 2 to move from the first position to a second position; a secondary positioning mechanism 3 for preprocessing the protection sheet located at the second position. After preprocessing, the protection sheet changes from a "one" shape to an inverted "r" shape with both sides翘起 and the upper horizontal width greater than the bottom horizontal width.

[0035] The loading and unloading mechanism 2 sucks the inverted "r" shaped protection sheet and places it on the tab 6. Specifically, the tab 6 is located below the through hole of the cover plate 7, the bottom of the inverted "r" shaped protection sheet is located on the tab 6, and the upper part is located on the cover plate 7.

[0036] The lower part of the protection sheet is located on the tab 6. <00,00088>The magazine mechanism 1 at the first position is provided with a lifting part 1-1, and a push rod 1-2 is provided at the output end of the lifting part 1-1;

[0038] [ In this embodiment, the lifting part 1-1 can be a micro electric cylinder and a lifting cylinder. When it is a micro electric cylinder, the micro electric cylinder can drive the push rod 1-2 to move during operation. The loading and unloading mechanism ^ can drive the protection sheet to move back and forth in the horizontal direction and can also move up and down in the vertical direction.

[0039] In one embodiment, a clamping mechanism 5 is provided for positioning the electrode tab 6 and the cover plate 7.

[0040] In one embodiment, the secondary positioning mechanism 3 is provided with an upper base 3-1 and a lower base 3-2. The upper base 3-1 and the lower base 3-2 are connected and supported by a connecting rod 3-3. A positioning seat 3-4 is installed on the upper base 3-1. The positioning seat 3-4 is provided with a groove 3-5, which is used to place a protective plate.

[0041] In one embodiment, a through hole 3-6 is provided at the bottom of the groove 3-5, and when the protective sheet is placed in the groove 3-5, the through hole 3-6 is located below the protective sheet.

[0042] In one embodiment, the area of ​​the through hole 3-6 is smaller than the area of ​​the bottom of the groove 3-5.

[0043] In one embodiment, the groove 3-5 is composed of two parts: a first placement groove 3-7 and a second placement groove 3-8. The length of the long side of the second placement groove 3-8 is greater than the length of the long side of the first placement groove 3-7, and the depth of the second placement groove 3-8 in the vertical direction is greater than the depth of the first placement groove 3-7 in the vertical direction.

[0044] In one embodiment, the grooves 3-5 can accommodate protective sheets of different thicknesses or lengths, thereby achieving the purpose of processing protective sheets of different models.

[0045] In another embodiment, after the loading / unloading mechanism 2 places the protective sheet into the second placement groove 3-8, the loading / unloading mechanism 2 continues to move downwards in the vertical direction. A portion of the protective sheet is pressed into the first placement groove 3-7, while the other portion of the protective sheet is raised and remains in the second placement groove 3-8.

[0046] In one embodiment, the two short sides of the protective sheet curl upwards after being pressed.

[0047] In one embodiment, a camera 3-9 is provided on the connecting rod 3-3, the camera 3-9 being used to detect whether a protective sheet is placed above the through hole 3-6.

[0048] In one embodiment, the protective sheet is made of copper.

[0049] In one embodiment, a protective sheet feeding device is provided, comprising:

[0050] The secondary positioning mechanism 3 is used to stamp the "I"-shaped protective sheet into an inverted "V"-shaped protective sheet with both sides raised and the upper horizontal width being greater than the bottom horizontal width.

[0051] The loading and unloading mechanism is used to place the inverted "V" - shaped protective sheet on the tab 6. Specifically, the tab 6 is located below the through - hole of the cover plate 7. The bottom of the inverted "V" - shaped protective sheet is located on the tab 6, and the upper part is located on the cover plate 7.

[0052] In one embodiment, it includes: In the secondary positioning mechanism 3, there are an upper base 3 - 1 and a lower base 3 - 2. The upper base 3 - 1 and the lower base 3 - 2 are connected and supported by a connecting rod 3 - 3. A positioning seat 3 - 4 is installed on the upper base 3 - 1. The positioning seat 3 - 4 is provided with a groove 3 - 5, and the groove 3 - 5 is used to place the "I" - shaped protective sheet.

[0053] In one embodiment, after the loading and unloading mechanism transports the "I" - shaped protective sheet to the secondary positioning mechanism 3, the loading and unloading mechanism punches the "I" - shaped protective sheet to obtain the inverted "V" - shaped protective sheet.

[0054] In one embodiment, a method for loading the protective sheet is provided, including:

[0055] Step S10: Punch the "I" - shaped protective sheet to obtain the inverted "V" - shaped protective sheet;

[0056] Step S20: Place the inverted "V" - shaped protective sheet on the tab 6. Specifically, the tab 6 is located below the through - hole of the cover plate 7. The bottom of the inverted "V" - shaped protective sheet is located on the tab 6, and the upper part is located on the cover plate 7.

[0057] The above - disclosed content is only the preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A protective sheet feeding device, characterized in that, There is a magazine mechanism (1) for transporting a protective sheet to a first position; a loading and unloading mechanism (2) for sucking the protective sheet; a handling mechanism (4) for driving the loading and unloading mechanism (2) to move from the first position to a second position; a secondary positioning mechanism (3) for preprocessing the protective sheet at the second position. After preprocessing, the protective sheet changes from a "one" shape to an inverted "r" shape with both sides upturned and the upper horizontal width greater than the bottom horizontal width. The loading and unloading mechanism (2) sucks the inverted "r" shaped protective sheet and places it on the tab (6). Specifically, the tab (6) is located below the through hole of the cover plate (7) of the battery, the bottom of the inverted "r" shaped protective sheet abuts against the tab (6), and the upper part is located on the cover plate (7) of the battery.

2. The protective sheet feeding device according to claim 1, characterized in that, There is a fixture mechanism (5) for positioning the battery.

3. The protective sheet feeding device according to claim 1, characterized in that, The secondary positioning mechanism (3) has an upper base (3-1) and a lower base (3-2), which are connected and supported by a connecting rod (3-3). A positioning seat (3-4) is installed on the upper base (3-1), and the positioning seat (3-4) has a groove (3-5) for placing the protective sheet.

4. The protective sheet feeding device according to claim 3, characterized in that, A through hole (3-6) is provided at the bottom of the groove (3-5). When the protective sheet is placed in the groove (3-5), the through hole (3-6) is located below the protective sheet.

5. The protective sheet feeding device according to claim 4, characterized in that, The area of the through hole (3-6) is smaller than the area of the bottom of the groove (3-5).

6. The protective sheet feeding device according to claim 3, characterized in that, The groove (3-5) consists of two parts, one is a first placement groove (3-7), and the other is a second placement groove (3-8). The length of the long side of the second placement groove (3-8) is greater than the length of the long side of the first placement groove (3-7), and the depth of the second placement groove (3-8) in the vertical direction is greater than the depth of the first placement groove (3-7) in the vertical direction.

7. A protective sheet feeding device, characterized in that, It includes: A secondary positioning mechanism (3) for stamping a "one" shaped protective sheet into an inverted "r" shaped protective sheet with both sides upturned and the upper horizontal width greater than the bottom horizontal width. A loading and unloading mechanism for placing the inverted "r" shaped protective sheet on the tab (6). Specifically, the tab (6) is located below the through hole of the cover plate (7), the bottom of the inverted "r" shaped protective sheet is located on the tab (6), and the upper part is located on the cover plate (7).

8. The protective sheet feeding device according to claim 7, characterized in that, It includes: The secondary positioning mechanism (3) has an upper base (3-1) and a lower base (3-2), which are connected and supported by a connecting rod (3-3). A positioning seat (3-4) is installed on the upper base (3-1), and the positioning seat (3-4) has a groove (3-5) for placing the "one" shaped protective sheet.

9. A method for feeding a battery protection sheet, wherein the steps of the battery protection sheet feeding method can be performed by the protection sheet feeding equipment of any one of claims 1-8, characterized in that, It includes: Step S10: Stamping the "one" shaped protective sheet to obtain an inverted "r" shaped protective sheet. Step S20, place the inverted "V" - shaped protective sheet on the tab (6). Specifically, the tab (6) is located below the through - hole of the cover plate (7), the bottom of the inverted "V" - shaped protective sheet is located on the tab (6), and the upper part is located on the cover plate (7).

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