An automated battery pole group production line and method thereof

Abstract

The application discloses a kind of battery pole group automation production line and method, belong to pole group automation production line technical field.The device includes half-pack film assembly, piece wrapping machine and pole group slotting mechanism;Piece wrapping machine is assembled as pole group with positive and negative pole plate and separator and is conveyed to pole group slotting mechanism by conveying line;Half-pack film assembly includes side package sliding seat and reset drive unit;The inner top of side package sliding seat is slidably connected with the top of side plate;The bottom of side plate is fixedly connected with film wrapping part, and the bottom and both sides of pole group are wrapped in half-pack mode;Reset drive unit is connected between the inner part of side package sliding seat and the top of side plate, for energy storage when pole group slotting, and driving side package sliding seat to reset upward after the reset of pressure head, to extract film wrapping part from battery tank.The application has the advantages of reducing material cost and avoiding a series of problems such as blocking micropores and affecting heat dissipation caused by permanent retention of PVC film by the design of half-pack film assembly.

Description

Technical Field

[0001] This invention relates to the field of automated production line technology for batteries, and particularly to an automated production line and method for batteries. Background Technology

[0002] In the automated production process of batteries, the battery electrode group automated production line is a key piece of equipment for achieving efficient and stable production. A typical battery electrode group automated production line usually includes: a wafer wrapping machine, used to alternately stack and assemble positive plates, negative plates, and separators into electrode groups; a conveyor line, used to transport the assembled electrode groups to the electrode group insertion mechanism; and the electrode group insertion mechanism, used to press the electrode groups into the battery slots of the battery casing, so that subsequent processes such as busbar welding, capping, and acid addition can be completed. Among these, the electrode group insertion is the core process in the entire production line that directly affects the battery assembly quality and production efficiency.

[0003] In the prior art, in order to avoid the problem of lead paste being scraped off the surface of the electrode plate and the separator being damaged due to direct contact between the electrode group and the battery tank wall when the electrode group is placed in the tank, a PVC film encapsulation technology for the electrode group will be adopted. This technology involves wrapping the electrode group with a PVC film in a U-shape on the outside of the electrode group, so that the electrode group and the PVC film are put into the battery case together. The PVC film protects the surface of the electrode plate from damage and prevents the lead paste from being scraped off by the battery case wall, thereby preserving the active material and increasing the battery assembly pressure.

[0004] However, in existing lead-acid battery electrode group coating PVC film packaging technology, the PVC film is installed into the battery case along with the electrode group and remains permanently in the battery case after sealing, acid addition, and charging processes. Although this technology can protect the electrode surface from damage and prevent the lead paste on the electrode surface from being scraped off by the battery case wall, thus preserving the active material, the PVC film not only affects heat dissipation but also accelerates its degradation at high temperatures, adhering to the electrode surface and micropores, leading to reduced capacity and shortened lifespan.

[0005] In response to the aforementioned problems of permanent PVC film retention leading to reduced heat dissipation, decreased capacity, and shortened lifespan, this invention presents an automated production line and method for battery electrode groups. Summary of the Invention

[0006] The purpose of this invention is to provide an automated production line and method for battery electrode groups, which can solve the problems of heat dissipation, capacity reduction and lifespan reduction caused by the permanent retention of PVC film in the prior art.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to an automated production line for battery electrode groups, comprising a semi-coating assembly, a coating machine, and an electrode group insertion mechanism. The coating machine assembles positive and negative electrode plates and separators into electrode groups, which are then conveyed to the electrode group insertion mechanism via a conveyor line. The electrode group insertion mechanism includes a side plate for laterally pressing the electrode groups and a pressure head for pressing the electrode groups into the battery slots of the battery casing. The semi-coating assembly is used to wrap the electrode groups before insertion, sink them during insertion, and automatically extract them after insertion, achieving the functions of guidance, protection, and reuse. The semi-encapsulated assembly includes a side-encapsulated slide and a reset drive unit. The side-encapsulated slide serves as the mounting base for the encapsulated portion and can slide up and down along the side plate. The reset drive unit is used to drive the side-encapsulated slide back to its original position after the pressure head resets, thereby pulling the encapsulated portion out of the battery slot. The top of the side-encapsulated slide slides vertically against the top of the side plate. The bottom of the side plate is fixedly connected to the encapsulated portion, which has a symmetrically arranged first and second semi-encapsulated portions located on both sides of the side plate to form a semi-encapsulated wrap around the bottom and sides of the electrode group. Through the sliding engagement between the side-encapsulated slide and the side plate, the encapsulated portion can sink synchronously with the electrode group. The first and second semi-encapsulated portions are symmetrically arranged to wrap the electrode group from the bottom and sides, preventing damage to the separator. A reset drive unit is connected between the inside of the side-encapsulated slide and the top of the side plate. This unit stores energy as the side-encapsulated slide moves downward during the electrode group insertion process and drives the side-encapsulated slide to reset upward after the pressure head resets, thereby pulling the encapsulated portion out of the battery slot.

[0008] As a preferred embodiment of the present invention, the side-mounted slide is a U-shaped structure; the first half-mounted membrane and the second half-mounted membrane are both L-shaped structures; the first half-mounted membrane and the second half-mounted membrane on the opposite inner side of each pair of adjacent side-mounted slides form a semi-enclosed wrap around the bottom and sides of the pole group; the reset drive unit is a spring reset assembly.

[0009] As a preferred embodiment of the present invention, the coating portion is made of a biaxially oriented polyester film that has undergone surface hardening treatment, with a thickness of 0.1mm-0.3mm, a tensile strength ≥190MPa, an elastic modulus ≥3500MPa, a coefficient of friction ≤0.5, and a surface hardness range of 2H-6H; the bottom length of the first and second half-coatings ranges from 2mm to 30mm; its low coefficient of friction ensures smooth sliding; and its surface hardness of 2H-6H can resist scratches and wear.

[0010] As a preferred embodiment of the present invention, the inner and outer surfaces of the coating portion are sequentially provided with a first smooth surface and a second smooth surface; the friction coefficient of the first smooth surface is greater than that of the second smooth surface; the friction coefficient of the first smooth surface is in the range of 0.4-0.5; and the friction coefficient of the second smooth surface is ≤0.45.

[0011] As a preferred embodiment of the present invention, the first half-covering film on the same side cover slide is located in the lateral pressing direction of the second half-covering film; the top heights of the first half-covering film and the second half-covering film are flush; the bottoms of the first half-covering film and the second half-covering film have an overlapping area; the bottom of the first half-covering film is lower than the bottom of the second half-covering film, and the height difference ranges from 1mm to 5mm.

[0012] As a preferred embodiment of the present invention, the side-mounted slide has connecting plates on both sides of the electrode group; the first and second half-mounted films have a U-shaped top view; the tops of both sides of the first and second half-mounted films are fixedly connected to the bottom of the connecting plates; each side bottom of the first and second half-mounted films has a film support portion; the connecting plates stably fix the first and second half-mounted films to the side-mounted slide; the U-shaped top view structure allows the film portion to surround the electrode group from three sides; the film support portion further enhances the protective surface at the bottom.

[0013] As a preferred embodiment of the present invention, each of the side slides is provided with a clearance through groove at its top; each of the side plates is provided with a limiting baffle for limiting the stroke range of the reset drive unit; the clearance through groove provides clearance space during the pressing operation to prevent interference; the limiting baffle limits the maximum compression and extension stroke of the reset drive unit to ensure that the side slide slides within a safe range and avoids damage due to overtravel.

[0014] As a preferred embodiment of the present invention, each of the side plates is hinged to a pair of torsion plates at its bottom, and each pair of torsion plates is configured to open outwards relative to each other; a torsion spring is provided between each torsion plate and the bottom of the side plate, the torsion spring being used to provide an elastic force to open the torsion plate outwards; the torsion plate is used to guide the pole group during the insertion process; the torsion plate is initially opened outwards to form a support surface.

[0015] A method for an automated production line for battery electrode clusters includes the following steps: Step 1: The electrode group assembled by the chip packaging machine is then placed in the placement space between adjacent side plates in the electrode group loading mechanism via the conveyor line and clamps. Step 2: The film portion on the side-mounted slide partially wraps the bottom and sides of the electrode group, with the first and second half-films located on the sides of the electrode group respectively; the overlapping area formed by the height difference between the bottom of the first and second half-films provides support for the bottom of the electrode group. Step 3: The starting pressure head presses the electrode group and the coating part downward into the battery slot. At the same time, the side packaging slide is pressed down by the pressure head and slides down along the side plate with the electrode group. The reset drive unit is compressed and stored. Step 4: After the pressure head is reset, the reset drive unit releases energy to drive the side cover slide to reset upward, causing the coating part to be pulled out of the battery slot, completing the electrode group insertion and reset; at the same time, the first half-coating and the second half-coating return to the L-shaped structure; the elastic force of the reset drive unit causes the side cover slide to move upward, and the coating part slides out of the battery slot.

[0016] As a preferred embodiment of the present invention, in step two, the bottom of the electrode group is wrapped by the overlapping area formed by the height difference between the bottom of the first half-coating film and the bottom of the second half-coating film; in step three, when the electrode group is pressed into the battery slot, the torsion plates at the bottom of each side plate are squeezed inward by the bottom of the electrode group and then act as guides, guiding the electrode group smoothly into the battery slot, and are driven to reset by the torsion spring after the electrode group is completely in the slot; the reset torsion plates support the bottom of the first half-coating film, the second half-coating film and the electrode group.

[0017] The present invention has the following beneficial effects: 1. This invention utilizes the design of a semi-encased membrane assembly to form a semi-encased wrap around the bottom and sides of the electrode group before it enters the battery slot. During entry, the membrane sinks synchronously with the electrode group and adheres to the side plate and the battery slot wall, serving both guiding and protective functions. After the pressure head resets, the reset drive unit drives the side-wrapped slide to reset upwards, completely extracting the membrane from the battery slot, allowing it to detach from the electrode group and be reused for the next electrode group. This invention has the advantages of reducing material costs and avoiding a series of problems that may be caused by the permanent presence of PVC film inside the battery, such as chloride ion release, sulfation, self-discharge, blockage of micropores, and impaired heat dissipation.

[0018] 2. The present invention utilizes an elastic biaxially oriented polyester film material and a height difference design in the wrapping part. When pressed in the transverse pressing direction, the bottom of the first half-wrap can support the bottom of the second half-wrap, thereby making it less likely for the bottom of the second half-wrap to roll up. It has the advantages of ensuring sufficient rigidity and tensile strength, preventing excessive deformation, resisting scratches and wear, and forming a stable semi-wrap. Attached Figure Description

[0019] Figure 1 This invention provides a schematic diagram of the structure of an automated production line for battery electrode groups. Figure 2 A partial front view of the semi-encapsulated assembly and the electrode group inlet mechanism provided by the present invention; Figure 3 This is a schematic diagram of the side-mounted slide provided by the present invention; Figure 4 This is a schematic diagram of the structure of the side slide and connecting plate provided by the present invention; Figure 5 A schematic diagram of the pole group slotting mechanism and the limiting baffle provided by the present invention; Figure 6 A schematic diagram of the semi-encapsulated assembly and electrode group insertion mechanism provided by the present invention in the pre-press-fitting state; Figure 7 This is a schematic diagram of the semi-encapsulated assembly and electrode group insertion mechanism provided by the present invention during the pressing process. Explanation of reference numerals in the attached figures: 1. Semi-coating assembly; 2. Electrode group insertion mechanism; 3. Electrode group; 101. Side coating slide; 102. Reset drive unit; 103. Coating part; 104. Connecting plate; 105. Coating support part; 106. Clearance through groove; 201. Side plate; 202. Press head; 203. Limiting baffle; 204. Torsion plate; 1031. First semi-coating; 1032. Second semi-coating; 1033. First smooth surface; 1034. Second smooth surface. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Example 1 like Figures 1 to 2 As shown in the figure, an automated production line for battery electrode groups provided by an embodiment of the present invention includes a semi-coating assembly 1, a coating machine, and an electrode group insertion mechanism 2. The coating machine assembles positive and negative electrode plates and separators into electrode groups 3 and conveys them to the electrode group insertion mechanism 2 via a conveyor line. The electrode group insertion mechanism 2 includes a side plate 201 for laterally pressing the electrode group 3 and a pressure head 202 for pressing the electrode group 3 into the battery slot of the battery casing. The semi-coating assembly 1 is used to wrap the electrode group 3 before insertion into the slot, sink it during insertion into the slot, and automatically pull it out after insertion into the slot, realizing the functions of guidance protection and reuse. The semi-encapsulated assembly 1 includes a side-encapsulated slide 101 and a reset drive unit 102. The side-encapsulated slide 101 serves as the mounting base for the encapsulated part and can slide up and down along the side plate 201. The reset drive unit 102 is used to drive the side-encapsulated slide 101 back to its original position after the pressure head 202 is reset, thereby pulling the encapsulated part 103 out of the battery slot. The top of the side-encapsulated slide 101 slides vertically against the top of the side plate 201. The encapsulated part 103 is fixedly connected to the bottom of the side plate 201. The encapsulated part 103 has a symmetrically arranged first semi-encapsulated part 1031 and a second semi-encapsulated part 1032, located on both sides of the side plate 201, to form a semi-encapsulated wrap around the bottom and sides of the electrode group 3. The side-encapsulated slide 101 and the side plate 201... With a sliding fit, the coating portion 103 can sink synchronously with the electrode group 3; the first half-coating 1031 and the second half-coating 1032 are symmetrically arranged to wrap the electrode group 3 from the bottom and sides to prevent the separator from being damaged; a reset drive unit 102 is connected between the inside of the side cover slide 101 and the top of the side plate 201, which is used to store energy as the side cover slide 101 moves downward during the insertion of the electrode group 3 into the slot, and drive the side cover slide 101 to reset upward after the pressure head 202 is reset, so as to pull the coating portion 103 out of the battery slot; the reset drive unit 102 is compressed and stored energy when it is inserted into the slot, and releases energy after the pressure head 202 is lifted, pushing the side cover slide 101 to reset upward, thereby pulling the coating portion 103 out of the battery slot, realizing the reuse of the coating portion 103.

[0022] Among them, such as Figure 3 and Figure 6 As shown, the side-mounted slide 101 has a U-shaped structure; the first half-covering membrane 1031 and the second half-covering membrane 1032 are both L-shaped structures; the first half-covering membrane 1031 and the second half-covering membrane 1032 on opposite inner surfaces of each pair of adjacent side-mounted slides 101 form a semi-enclosed wrap around the bottom and sides of the pole group 3; the reset drive unit 102 is a spring reset assembly; the U-shaped side-mounted slide 101 facilitates sliding with the side plate 201; the two symmetrically distributed L-shaped half-covering membranes can simultaneously cover the bottom and sides of the pole group 3, forming a stable semi-enclosed wrap; the half-covering membranes on adjacent side-mounted slides 101 work together to ensure that the bottom and sides of the pole group 3 are protected; the spring reset assembly has a simple structure, low cost, and can reliably provide reset force.

[0023] The coating portion 103 is made of a biaxially oriented polyester film with surface hardening treatment. Its thickness is 0.2 mm, the measured tensile strength is 210 MPa, the measured elastic modulus is 4000 MPa, the coefficient of friction is 0.4, and the surface hardness is 4H. The bottom length of the first half-coating 1031 and the second half-coating 1032 is 20 mm. The use of biaxially oriented polyester film with surface hardening treatment ensures that the coating portion 103 has sufficient rigidity and tensile strength, and will not deform excessively when inserted into the groove. The low coefficient of friction ensures smooth sliding. The surface hardness of 4H can resist scratches and wear. Its bottom length of 20 mm is suitable for the commonly used pole group 3 size, and can partially overlap to avoid the bottom end of the second half-coating 1032 from curling up.

[0024] Among them, such as Figure 3 As shown, the inner and outer surfaces of the coating portion 103 are sequentially provided with a first smooth surface 1033 and a second smooth surface 1034. The friction coefficient of the first smooth surface 1033 is greater than that of the second smooth surface 1034. The first smooth surface 1033 faces the electrode group 3, and the larger friction coefficient helps to maintain relative stillness with the electrode group 3 during the insertion process, reducing the probability of the coating portion 103 sliding sideways with the electrode group 3. The second smooth surface 1034 faces the side plate 201 and the battery slot wall, and the smaller friction coefficient helps the coating portion 103 slide out smoothly during extraction, reducing resistance. That is, the friction coefficient of the first smooth surface 1033 is 0.4; the friction coefficient of the second smooth surface 1034 is 0.35. The friction coefficient of the first smooth surface 1033 facing the electrode group 3 is relatively smaller than that of the second smooth surface 1034. The larger smooth surface 1034 helps maintain relative stillness with the electrode group 3 during the insertion process, preventing slippage. The second smooth surface 1034 faces the side plate 201 and the battery compartment wall, and the smaller coefficient of friction facilitates the smooth sliding of the coating part 103 during extraction, reducing resistance. Even if the coating part 103 and the electrode group 3 experience lateral slippage, the amount of lateral slippage displacement of the two at the same moment will be significantly smaller than the sliding distance between the electrode group 3 and the side plate 201, and also significantly smaller than the sliding distance between the electrode group 3 and the inner wall of the battery compartment. In fact, when the coating part 103 experiences limited lateral slippage, it also causes the side or even bottom of the coating part 103 to slide to the inner side wall of the battery compartment when the electrode group 3 reaches the inner bottom wall of the battery compartment. This also facilitates film extraction, which reduces the difficulty of film extraction and the pulling force required for film extraction.

[0025] Among them, such as Figure 6As shown, the first half-covering film 1031 on the same side-covering slide 101 is located in the lateral pressing direction of the second half-covering film 1032; the top heights of the first half-covering film 1031 and the second half-covering film 1032 are flush; the bottoms of the first half-covering film 1031 and the bottoms of the second half-covering film 1032 overlap; the bottom of the first half-covering film 1031 is lower than the bottom of the second half-covering film 1032, with a height difference ranging from 1mm to 5mm; its design function is that the overlapping bottoms and the 3mm height difference form an overlapping structure, so that when the first half-covering film 1031 and the second half-covering film 1032 are pressed in the lateral pressing direction, the bottom of the first half-covering film 1031 can lift the bottom of the second half-covering film 1032, thereby making it difficult for the bottom of the second half-covering film 1032 to be rolled up.

[0026] Among them, such as Figure 4 As shown, the side-mounted slide 101 has connecting plates 104 on both sides of the pole group 3; the top shape of the first half-covering membrane 1031 and the second half-covering membrane 1032 is U-shaped; the top of both sides of the first half-covering membrane 1031 and the second half-covering membrane 1032 are fixedly connected to the bottom of the connecting plates 104; each side bottom of the first half-covering membrane 1031 and the second half-covering membrane 1032 is provided with a membrane support 105; the connecting plates 104 stably fix the first half-covering membrane 1031 and the second half-covering membrane 1032 to the side-mounted slide 101; the U-shaped top-view structure allows the membrane portion 103 to surround the pole group 3 from three sides; the membrane support portion 105 further enhances the protective surface at the bottom.

[0027] Among them, such as Figure 1 and Figure 3 As shown, each side slide 101 has a clearance through groove 106 on its top; each side plate 201 is provided with a limiting baffle 203 for limiting the stroke range of the reset drive unit 102; the clearance through groove 106 provides clearance space during the pressing operation to prevent interference; the limiting baffle 203 limits the maximum compression and extension stroke of the reset drive unit 102 to ensure that the side slide 101 slides within a safe range and avoids damage due to overtravel.

[0028] Among them, such as Figures 5 to 7As shown, each side plate 201 has a pair of torsion plates 204 hinged to its bottom, and both torsion plates 204 are configured to open outwards relative to each other. A torsion spring is provided between each torsion plate 204 and the bottom of the side plate 201. The torsion spring is used to provide elastic force to open the torsion plate 204 outwards. The torsion plate 204 is used to guide the electrode group 3 during the insertion process. The torsion plate 204 is initially open outwards to form a support surface. When the electrode group 3 is placed, the bottom of the electrode group 3 is lifted and fits against the coating part 103. When the electrode group 3 is pressed in, the bottom of the electrode group 3 squeezes the torsion plate 204 to make it contract inwards, thereby clamping and guiding the bottom of the electrode group 3 to accurately enter the battery slot. After the electrode group 3 is fully inserted into the slot, the torsion spring drives the torsion plate 204 to reset, and continues to provide support and guidance for the bottom of the next coating part 103 and the electrode group 3.

[0029] Example 2 A method for an automated production line for battery electrode clusters includes the following steps: Step 1: The electrode group 3 assembled by the packaging machine is conveyed through the conveyor line and clamps and then placed in the placement space between adjacent side plates 201 in the electrode group loading mechanism 2; the clamps accurately feed the electrode group 3 between adjacent side plates 201 to ensure the alignment accuracy of subsequent packaging and pressing. Step 2: The film portion 103 on the side-mounted slide 101 partially wraps the bottom and sides of the electrode group 3, with the first half-film 1031 and the second half-film 1032 located on the sides of the electrode group 3 respectively; the overlapping area formed by the height difference between the bottom of the first half-film 1031 and the second half-film 1032; the bottom of the first half-film 1031 lifts the bottom of the second half-film 1032, thereby preventing the bottom of the second half-film 1032 from being rolled up during the pressing process; Step 3: The pressure head 202 is activated to press the electrode group 3 and the coating part 103 downward into the battery slot. At the same time, the side cover slide 101 is pressed down by the pressure head 202 and slides down along the side plate 201 with the electrode group 3. The reset drive unit 102 is compressed and stored. When the electrode group 3 is pressed into the battery slot, the torsion plate 204 at the bottom of each side plate 201 is squeezed inward by the bottom of the electrode group 3 and plays a guiding role, guiding the electrode group 3 smoothly into the battery slot. After the electrode group 3 is fully inserted into the slot, it is driven to reset by the torsion spring. After the reset, the torsion plate 204 supports the bottom of the first half coating 1031, the second half coating 1032 and the electrode group 3. Step 4: After the pressure head 202 resets, the reset drive unit 102 releases energy to drive the side package slide 101 to reset upwards, causing the wrapping part 103 to be pulled out of the battery slot, completing the insertion and reset of the electrode group 3; at the same time, the first half-wrapping 1031 and the second half-wrapping 1032 return to the L-shaped structure; the elastic force of the reset drive unit 102 causes the side package slide 101 to move upwards, and the wrapping part 103 slides out of the battery slot; since the wrapping part 103 is made of elastic biaxially oriented polyester film material, it automatically returns to the L-shape after being pulled out, preparing for the next wrapping.

[0030] In step two, the bottom of the electrode group 3 is wrapped by the overlapping area formed by the height difference between the bottom of the first half-coating film 1031 and the bottom of the second half-coating film 1032. In step three, when the electrode group 3 is pressed into the battery slot, the torsion plate 204 at the bottom of each side plate 201 is squeezed inward by the bottom of the electrode group 3 and plays a guiding role, guiding the electrode group 3 to smoothly enter the battery slot. After the electrode group 3 is fully inserted into the slot, it is driven to reset by the torsion spring. After the reset torsion plate 204 supports the bottom of the first half-coating film 1031, the second half-coating film 1032 and the electrode group 3.

[0031] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An automated production line for battery electrode groups, comprising a wafer wrapping machine and an electrode group insertion mechanism (2); the wafer wrapping machine assembles positive and negative electrode plates and separators into electrode groups (3) and conveys them to the electrode group insertion mechanism (2) via a conveyor line; the electrode group insertion mechanism (2) comprises a side plate (201) for laterally pressing the electrode group (3) and a pressure head (202) for pressing the electrode group (3) into the battery slot of the battery casing; characterized in that, It also includes a semi-encapsulated membrane assembly (1); The semi-encapsulated assembly (1) includes a side-encapsulated slide (101) and a reset drive unit (102). The top of the inner side slide (101) slides vertically with the top of the side plate (201); the bottom of the side plate (201) is fixedly connected to a film part (103), the film part (103) has a first half film (1031) and a second half film (1032) symmetrically arranged, and is located on both sides of the side plate (201) to form a semi-enclosed wrapping of the bottom and sides of the pole group (3); A reset drive unit (102) is connected between the inside of the side package slide (101) and the top of the side plate (201). It is used to store energy as the side package slide (101) moves downward during the process of the electrode group (3) entering the slot, and drive the side package slide (101) to reset upward after the pressure head (202) is reset, so as to extract the coating part (103) from the battery slot.

2. The automated production line for battery electrode groups as described in claim 1, characterized in that, The side-mounted slide (101) has a U-shaped structure; the first half-mounted membrane (1031) and the second half-mounted membrane (1032) are both L-shaped structures; the first half-mounted membrane (1031) and the second half-mounted membrane (1032) on the opposite inner sides of each pair of adjacent side-mounted slides (101) form a semi-enclosed wrap around the bottom and sides of the pole group (3); the reset drive unit (102) is a spring reset assembly.

3. The automated production line for battery electrode groups as described in claim 2, characterized in that, The coating part (103) is made of a biaxially oriented polyester film that has undergone surface hardening treatment. Its thickness is 0.1mm-0.3mm, tensile strength is ≥190MPa, elastic modulus is ≥3500MPa, coefficient of friction is ≤0.5, and surface hardness ranges from 2H to 6H.

4. The automated production line for battery electrode groups as described in claim 3, characterized in that, The inner and outer surfaces of the coating portion (103) are provided with a first smooth surface (1033) and a second smooth surface (1034) in sequence; the friction coefficient of the first smooth surface (1033) is greater than that of the second smooth surface (1034).

5. The automated production line for battery electrode groups as described in claim 2, characterized in that, The first half-covering film (1031) on the same side cover slide (101) is located in the lateral pressing direction of the second half-covering film (1032); the top heights of the first half-covering film (1031) and the second half-covering film (1032) are flush; the bottom of the first half-covering film (1031) overlaps with the bottom of the second half-covering film (1032); the bottom of the first half-covering film (1031) is lower than the bottom of the second half-covering film (1032).

6. The automated production line for battery electrode groups as described in claim 1, characterized in that, The side-mounted slide (101) is provided with connecting plates (104) on both sides of the pole group (3); the top view of the first half-covering membrane (1031) and the second half-covering membrane (1032) is a U-shaped structure; the top of both sides of the first half-covering membrane (1031) and the second half-covering membrane (1032) are fixedly connected to the bottom of the connecting plate (104); the bottom of each side of the first half-covering membrane (1031) and the second half-covering membrane (1032) is provided with a membrane support (105).

7. The automated production line for battery electrode groups as described in claim 1, characterized in that, Each of the side slides (101) has a clearance through groove (106) on its top; each of the side plates (201) has a limiting baffle (203) for limiting the travel range of the reset drive unit (102).

8. The automated production line for battery electrode groups as described in claim 1, characterized in that, Each of the side plates (201) has a pair of torsion plates (204) hinged to its bottom, and the pair of torsion plates (204) are both set to open outward relative to each other; a torsion spring is provided between each torsion plate (204) and the bottom of the side plate (201), and the torsion spring is used to provide an elastic force to open the torsion plate (204) outward; the torsion plate (204) is used to guide the pole group (3) during the process of entering the groove.

9. A method for an automated production line for battery electrode groups as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: The electrode group (3) assembled by the chip packaging machine is placed in the placement space between adjacent side plates (201) in the electrode group loading mechanism (2) via the conveyor line and clamps; Step 2: The film portion (103) on the side-mounted slide (101) partially wraps the bottom and sides of the pole group (3), and the first half-film (1031) and the second half-film (1032) are located on the sides of the pole group (3), respectively. Step 3: The starting pressure head (202) presses the electrode group (3) and the coating part (103) downward into the battery slot. At the same time, the side packaging slide (101) is pressed down by the pressure head (202) and slides down along the side plate (201) with the electrode group (3). The reset drive unit (102) is compressed and stored. Step 4: After the pressure head (202) is reset, the reset drive unit (102) releases energy to drive the side cover slide (101) to reset upward, and drive the cover part (103) to be pulled out from the battery slot, completing the insertion and reset of the electrode group (3); at the same time, the first half cover (1031) and the second half cover (1032) are restored to the L-shaped structure.

10. The method for an automated production line for battery electrode groups as described in claim 9, characterized in that, In step two, the bottom of the electrode group (3) is wrapped by the overlapping area formed by the height difference between the bottom of the first half-coating film (1031) and the bottom of the second half-coating film (1032). In step three, when the electrode group (3) is pressed into the battery slot, the torsion plate (204) at the bottom of each side plate (201) is squeezed inward by the bottom of the electrode group (3) and plays a guiding role, guiding the electrode group (3) to smoothly enter the battery slot. After the electrode group (3) is completely in the slot, it is driven to reset by the torsion spring. After the reset torsion plate (204) supports the bottom of the first half-coating film (1031), the second half-coating film (1032) and the electrode group (3).

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