A pole group transient envelope press-in device and working method thereof

Abstract

The application discloses a kind of pole group transient envelope press-in device and its working method, belong to lead-acid battery production field.The device includes transient envelope mechanism and pole group into slot mechanism;Pole group into slot mechanism is pressed into battery tank;Transient envelope mechanism includes protective film;The two ends of protective film are respectively connected with film setting part, solid-liquid conversion part;Pole group into slot mechanism is slidably connected with partition plate, and pressure head is assembled above pole group into slot mechanism;Film setting part, solid-liquid conversion part are respectively vertically slidably connected with the opposite inner side of each adjacent two partition plates;Protective film temporarily wraps pole group, and is extracted after pressure head is simultaneously pressed into battery tank with each pole group and corresponding transient envelope mechanism.The application is designed by the design effect of transient envelope mechanism, has the advantage that the negative influence of traditional permanent envelope to electrolyte infiltration, heat dissipation and film material aging degradation is completely eliminated, and protective film can be reused, and material cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery manufacturing technology, and in particular to a transient coating pressing device for electrode groups and its working method. Background Technology

[0002] In the production process of lead-acid batteries, multiple positive and negative plates and separators are alternately stacked to form electrode groups, which are then precisely pressed into the battery slots of the battery casing. This process is called "electrode group insertion." The quality of electrode group insertion directly affects the battery's capacity, internal resistance, self-discharge rate, and lifespan.

[0003] Currently, electrode pack insertion into the battery compartment generally adopts a tight assembly process, where the lateral dimension of the electrode pack is slightly larger than the width of the battery compartment to ensure contact pressure. For this purpose, existing devices often have guide posts and corresponding multiple horizontally movable partition plates and positioning sleeves, with adjacent partition plates forming a placement area; after the electrode pack is placed, the partition plates are laterally pressed to the predetermined thickness of the electrode pack, and then the entire assembly is pressed into the battery compartment by the pressure head above.

[0004] During the process of placing the electrode group into the battery tank, friction can easily occur between the edge of the electrode group and the wall of the battery tank, causing the active material on the surface of the electrode plate to be scraped off, resulting in quality problems such as reduced battery capacity and micro-short circuits. Some existing technologies use U-shaped PVC film or PE bag to wrap the electrode group before placing it into the tank, but this protective film remains permanently in the battery tank, occupying limited space, affecting the full wetting of the electrolyte, ion migration and heat dissipation, and long-term immersion may also age and degrade, producing fragments that block the micropores of the separator; at the same time, single-use also increases material costs.

[0005] In response to the aforementioned problems of active material scraping off, affecting electrolyte wetting, and degradation debris clogging the micropores of the separator, this invention designs an electrode group transient coating pressing device and its working method. Summary of the Invention

[0006] The purpose of this invention is to provide a transient coating pressing device for electrode groups and its working method, which can solve the problems of active material scraping, affecting electrolyte wetting, and degradation fragments clogging the micropores of the separator in the prior art mentioned above.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a transient coating pressing device for electrode groups, comprising a transient coating mechanism and an electrode group insertion mechanism; the electrode group insertion mechanism is used to press the electrode groups into the battery slots of a battery casing; the transient coating mechanism includes a fixed film section, a solid-deposition conversion section, and a protective film; one end of the protective film is detachably connected to the fixed film section; the other end of the protective film is releasably clamped and connected to the solid-deposition conversion section; The electrode group insertion mechanism is slidably connected to several partition plates along the horizontal direction, and the partition plates are used to press the electrode group laterally; several pressure heads are assembled above the electrode group insertion mechanism, and the pressure heads are used to press the electrode group downward into the battery slot. In each pair of adjacent partition plates, the fixed film part is vertically slidably connected to one side of the opposite inner surface, and the solid-deposition conversion part is fixedly connected to the other side; the protective film temporarily wraps the electrode group and is extracted after the pressure head presses each electrode group and the corresponding fixed film part into the battery slot simultaneously.

[0008] The core design of this invention lies in: a transient coating mechanism is set between the partition plates, with one end of the protective film fixed and the other end lightly clamped and releasable; when the electrode group is pressed flat, the protective film automatically slides to compensate for the length; after pressing, the solid-release conversion part releases the film end, the film-fixing part pulls up to completely extract the film, and a one-way check mechanism pushes it back to its original position. This solution achieves the advantages of wrapping the protective film before it enters the tank, adaptive feeding during entry, complete extraction and automatic reset after entry, eliminating permanent film residue, avoiding scratches, allowing the film to be reused, and fully automated linkage throughout the process.

[0009] As a preferred embodiment of the present invention, one end of the protective film is detachably connected to the fixed film portion by clamping and fixing, and the fixed film portion is provided with first anti-slip texture on both sides of the protective film; a reset mechanism for resetting and rebounding the top of the fixed film portion is fixedly installed on the electrode group groove mechanism; a reset spring is built into the reset mechanism.

[0010] As a preferred embodiment of the present invention, the film fixing part adopts an electromagnetic lock structure, which clamps and fixes one end of the protective film.

[0011] As a preferred embodiment of the present invention, the film fixing part includes a first clamping plate and a second clamping plate; one end of the protective film is clamped between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are fixedly installed by bolts.

[0012] As a preferred embodiment of the present invention, the solid-detachment conversion part includes a fixed clamping plate and a movable clamping plate; an electric telescopic rod is fixedly installed on each of the bottom sides of the fixed clamping plate; the telescopic end of the electric telescopic rod is hinged to the movable clamping plate, and a one-way check mechanism is provided at the hinge point between the telescopic end of the electric telescopic rod and the movable clamping plate; the one-way check mechanism may include a torsion spring and its reset function, and the core function of the one-way check mechanism is that when the movable clamping plate is folded through the limiting rod, it automatically returns to the unfolded state, thereby realizing the one-way pull-back function of the end of the protective film; the one-way check mechanisms at the two edges of each protective film are symmetrically arranged.

[0013] The electrode group placement mechanism further includes guide posts and positioning sleeves. The guide posts pass through several partition plates to guide the horizontal sliding of the partition plates. A placement area for placing the electrode group is formed between two adjacent partition plates. The positioning sleeve is sleeve-shaped and passes through the guide posts. It is located between each pair of adjacent partition plates and abuts against each of the two partition plates, and is used to limit the minimum distance between the adjacent partition plates. A preload spring is also embedded in the positioning sleeve. The preload spring is compressed when the adjacent partition plates are pressed together and releases energy after the pressing is completed, driving the adjacent partition plates to separate and reset. In a preferred embodiment of the present invention, a limiting rod is rotatably connected to the positioning sleeve via a hinge shaft, and the limiting rod and the hinge shaft are unidirectional swing structures; the limiting rod is used to cooperate with the movable clamping plate. When the telescopic part of the electric telescopic rod extends, the moving clamp plate contacts the limiting rod and folds to be parallel to the telescopic part, overcoming the elastic force of the torsion spring, so that the moving clamp plate passes through in one direction with a low profile. When the movable clamping plate passes the limiting rod, it automatically unfolds to be perpendicular to the telescopic part under the action of the torsion spring, so that the movable clamping plate passes from the front side of the protective film to the rear side of the protective film; realizing the one-way retraction of the end of the protective film; during the retraction, the limiting rod swings to make way.

[0014] As a preferred embodiment of the present invention, the inner surfaces of the fixed clamping plate and the moving clamping plate are both smooth planes without anti-slip textures, so that the clamping force applied by both to the other end of the protective film is only slightly damped, allowing the protective film to slide and feed under tension.

[0015] As a preferred embodiment of the present invention, the protective film is a polymer film with a thickness of 0.05mm-0.15mm, a tensile strength ≥200MPa, a surface friction coefficient ≤0.4, a tear strength ≥100kN / m, and a heat shrinkage rate ≤0.5%.

[0016] As a preferred embodiment of the present invention, the protective film is made of one or more composites of polyester film, thermoplastic polyurethane film, polyamide film, polyvinyl chloride film, or polyethylene film.

[0017] A method for operating a transient membrane pressing device for polar groups includes the following steps: S1: Place each pole group into the respective placement area formed by adjacent partition plates, and let each pole group fall into the temporary enclosure space surrounded by the corresponding protective film; S2: Drive the pressure head downward to flatten and adjust the upper surface of each electrode group in each placement area, so that the upper surface of each electrode group is kept flat, and at the same time, the protective film is pressed and adhered to the surface of the electrode group; during this process, the other end of the protective film is fed from the solid-deposition conversion part with low resistance to supplement the length of protective film required to wrap the electrode group. S3: Drive the partition plate to slide horizontally, so that the adjacent partition plates are close to each other and the pole group is pressed laterally. At the same time, the pre-compression spring in the positioning sleeve is compressed. S4: Drive the pressure head to move downwards, and simultaneously press the electrode group and its surrounding protective film into the battery slot; at this time, the fixed film part is also pressed downwards synchronously and the protective film is in a U-shape. S5: Drive the pressure head to move upward to reset, and the fixed film part resets upward under the action of the reset mechanism to pull the protective film; at the same time, the solid-detachment conversion part releases the protective film, and the battery casing is transported out laterally to further separate from the protective film. At this time, the protective film is in an inclined state. S6: The telescopic part of the electric telescopic rod in the fixed-detachment conversion unit extends, causing the moving clamp to contact the limiting rod and fold against the torsion spring force to be parallel to the telescopic part, passing through the limiting rod in one direction; then, the moving clamp automatically unfolds under the action of the torsion spring to be perpendicular to the telescopic part; realizing the function of moving from the inside to the outside of the protective film in a straightened state before the protective film is completely detached from the battery slot. S7: The electric telescopic rod controls the telescopic part to retract, thereby pulling back the protective film until the moving clamp plate resets and clamps the protective film; at the same time, the pole group groove mechanism releases the pressure partition plate and resets to move away from each other, and the pre-compression spring in the positioning sleeve releases energy, assisting the partition plate to separate, thus completing one working cycle.

[0018] The present invention has the following beneficial effects: 1. This invention utilizes the design of a transient coating mechanism where one end of the protective film is fixed and the other end is releasably clamped and connected. During the electrode group pressing process, the protective film isolates the electrode group from the side wall of the battery compartment throughout the process, effectively preventing electrode plate abrasion and active material shedding. After pressing is completed, the protective film is completely extracted, leaving no residue inside the battery casing. This completely eliminates the negative impacts of traditional permanent coating on electrolyte wetting, heat dissipation, and film material aging and degradation. At the same time, the protective film can be reused, significantly reducing material costs.

[0019] 2. The present invention applies only slight damping clamping to the other end of the protective film through the solid-release conversion part. During the process of flattening and pressing down the electrode group, the protective film can automatically slide from the clamping end to feed material according to the increase of the package circumference, accurately compensate for the required length, effectively avoid the common problems of breakage or accumulation of fixed length film materials, and ensure that the protective film is always in close contact with the electrode group surface, which has the advantages of improving the reliability and consistency of the package.

[0020] 3. Through the design of the solid-detachment conversion section, the present invention utilizes the mechanical cooperation between the electric telescopic rod and the limiting rod to enable the moving clamp to complete the unidirectional flipping over the edge of the relatively soft protective film to achieve the function of retraction and re-clamping; at the same time, the partition plate automatically separates and resets under the energy release drive of the pre-compression spring in the positioning sleeve; thus realizing the recycling of the protective film and the fully automatic continuous operation of the equipment, which has the advantage of significantly improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a transient coating pressing device for an electrode group in the state after pressing and before pressing, provided by the present invention. Figure 2 This is a side view of the structure of a transient coating pressing device for an electrode group, in the state after pressing and before pressing, provided by the present invention. Figure 3 This is a schematic diagram of the structure of the transient coating pressing device for pole groups in a flattened state provided by the present invention; Figure 4 A schematic diagram showing the position of the protective film provided by the present invention in the transient coating mechanism and the pole group insertion mechanism; Figure 5 A schematic diagram of the electromagnetic lock structure used in the film-fixing section provided by the present invention; Figure 6 A side view of the structure of the film-fixing part provided by the present invention; Figure 7 A schematic diagram of the structure of the solid-detachment conversion part provided by the present invention during the folding process of the limiting rod overcoming the torque; Figure 8 This is a schematic diagram of the structure of the solid-desolidification conversion unit provided by the present invention, before the protective film is retracted and the protective film is in an inclined state. Figure 9 This is a schematic diagram of the structure of the solid-deposition conversion section provided by the present invention when the protective film is retracted.

[0022] Explanation of reference numerals in the attached figures: 1. Transient coating mechanism; 2. Electrode group insertion mechanism; 3. Electrode group; 101. Fixed film section; 102. Solid-to-debonding conversion section; 103. Protective film; 201. Separator plate; 202. Pressure head; 203. Guide post; 204. Positioning sleeve; 205. Placement area; 206. Reset mechanism; 1011. First anti-slip texture; 1012. Electromagnetic lock structure; 1013. First clamping plate; 1014. Second clamping plate; 1015. Bolt; 1016. Relief slot; 1021. Fixed clamping plate; 1022. Moving clamping plate; 1023. Electric telescopic rod; 1024. One-way check mechanism; 1025. Limiting rod; 2021. Slot. Detailed Implementation

[0023] 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.

[0024] Example 1 like Figures 1 to 9 As shown, an embodiment of the present invention provides a transient coating pressing device for electrode groups, including a transient coating mechanism 1 and an electrode group insertion mechanism 2; the electrode group insertion mechanism 2 is used to press the electrode group 3 into the battery slot of the battery casing; the transient coating mechanism 1 includes a fixing part 101, a solid-deposition conversion part 102, and a protective film 103; one end of the protective film 103 is fixedly installed with the fixing part 101 by a first clamping plate 1013 and a second clamping plate 1014 or clamped and fixed by an electromagnetic lock structure 1012; when the electromagnetic lock structure 1012 is used, a limit block and a corresponding slot are also designed inside to prevent it from sliding in the vertical direction; the other end of the protective film 103 is connected to the solid-deposition conversion part 102. The part 102 is releasably clamped and connected; the film fixing part 101 has first anti-slip textures 1011 on both sides of the protective film 103; a reset mechanism 206 for resetting and rebounding the top of the film fixing part 101 is fixedly installed on the electrode group insertion mechanism 2; a reset spring is installed inside the reset mechanism 206; the top of the film fixing part 101 is fixedly installed to the top of the reset mechanism 206; by clamping both ends of the protective film 103 by the film fixing part 101 and the solid-release conversion part 102 respectively, a transient wrapping function of fixing one end of the protective film 103 and releasing the other end in a controllable manner is realized; the reset mechanism 206 and the reset spring provide the film fixing part 101 with an automatic reset force for upward film pulling. Among them, several partition plates 201 are slidably connected to the electrode group insertion mechanism 2 along the horizontal direction. The partition plates 201 are used to laterally press the electrode group 3. Several pressure heads 202 are mounted on the top of the electrode group insertion mechanism 2. The pressure heads 202 are used to press the electrode group 3 downward into the battery slot. The partition plates 201 move laterally to achieve tight assembly and pressing of the electrode group 3. The pressure heads 202 provide longitudinal pressing force and work together with the transient coating mechanism 1 to complete the positioning and insertion of the electrode group 3 into the slot. In this configuration, on the opposite inner surfaces of each pair of adjacent partition plates 201, one side is vertically slidably connected to the fixed film portion 101, and the other side is fixedly connected to the solid-deposition conversion portion 102. The protective film 103 temporarily wraps the electrode group 3 and is extracted after the pressure head 202 presses each electrode group 3 and the corresponding fixed film portion 101 into the battery slot. The fixed film portion 101 moves in conjunction with the partition plate 201 to ensure that the protective film 103 is always facing the electrode group 3. After pressing, the protective film 103 is completely extracted to avoid permanent residue. At the same time, the bottom of the pressure head 202 not only presses in the electrode group 3, but the pressure head 202 is also designed with a groove 2021 that cooperates with pressing in the top of the fixed film portion 101. The top of the fixed film portion 101 is also provided with a clearance groove 1016 for the pressing and leveling operation. The protective film 103 is a polymer film with a thickness of 0.05mm-0.15mm, a tensile strength ≥200MPa, a surface friction coefficient ≤0.4, a tear strength ≥100kN / m, and a heat shrinkage rate ≤0.5%. The protective film 103 is made of one of the following materials: polyester film (PET), thermoplastic polyurethane film (TPU), polyamide film (nylon), polyvinyl chloride film (PVC), or polyethylene film (PE). The high strength, low friction, and tear resistance of the protective film 103 make it less prone to damage during sliding feeding and extraction, and it can be reused, reducing material costs.

[0025] Among them, such as Figure 5 As shown, when the film fixing part 101 is an electromagnetic lock structure 1012, the electromagnetic lock structure 1012 clamps and fixes one end of the protective film 103; as Figure 6 As shown, when the film fixing part 101 includes a first clamping plate 1013 and a second clamping plate 1014, one end of the protective film 103 is clamped between the first clamping plate 1013 and the second clamping plate 1014, and the first clamping plate 1013 and the second clamping plate 1014 are fixedly installed by bolts 1015; the electromagnetic lock structure 1012 or the clamping plate structure fixed by bolts 1015 can achieve a detachable fixed connection of one end of the protective film 103, which facilitates the replacement of the protective film 103 and ensures its firmness in the working state.

[0026] Among them, such as Figure 1 and Figure 7 As shown, the solidification / detachment conversion unit 102 includes a fixed clamping plate 1021 and a movable clamping plate 1022; each of the bottom sides of the fixed clamping plate 1021 is fixedly mounted with an electric telescopic rod 1023; adjacent electric telescopic rods 1023 are staggered vertically to avoid physical interference; the telescopic end of the electric telescopic rod 1023 is hinged to the movable clamping plate 1022, and a one-way check mechanism 1024 is provided at the hinge point between the telescopic end of the electric telescopic rod 1023 and the movable clamping plate 1022; the opposing inner surfaces between the fixed clamping plate 1021 and the movable clamping plate 1022 are smooth planes without anti-slip textures. The clamping force applied to the other end of the protective film 103 by both is only slightly damped, allowing the protective film 103 to slide and feed under tension; the smooth fixed clamping plate 1021 and the moving clamping plate 1022 provide low-damping clamping, so that the protective film 103 can slide and feed automatically when the pole group 3 is pressed down; the one-way check mechanism 1024 ensures that the moving clamping plate 1022 can only be flipped in one direction, so as to realize the subsequent torsional reset and realize the back-pull function; the one-way check mechanism 1024 allows the moving clamping plate 1022 to pass over the relatively soft edge of the protective film 103 and directly perform the back-pull action.

[0027] Among them, such as Figures 1 to 3As shown, the pole group insertion mechanism 2 also includes a guide post 203 and a positioning sleeve 204. The guide post 203 passes through several partition plates 201 and is used to guide the horizontal sliding of the partition plates 201. A placement area 205 for placing the pole group 3 is formed between two adjacent partition plates 201. The positioning sleeve 204 is sleeve-shaped and passes through the guide post 203. It is located between each pair of adjacent partition plates 201 and abuts against each of the two partition plates 201. A pre-compression spring is also embedded in the positioning sleeve 204. The pre-compression spring is compressed when adjacent partition plates 201 are pressed together and releases energy after the pressing is completed, driving the adjacent partition plates 201 to separate and reset. The guide post 203 provides horizontal guidance for the partition plates 201, and the pre-compression spring in the positioning sleeve 204 realizes the automatic reset of the partition plates 201 after pressing, ensuring the continuity of the cycle operation.

[0028] Among them, such as Figure 7 As shown, a limiting rod 1025 is rotatably connected to the positioning sleeve 204 via a hinge shaft, and the limiting rod 1025 and the hinge shaft are a unidirectional swing structure. That is, the hinge shaft is limited and prevented from rotating at the position where the limiting rod 1025 follows the extension direction of the moving clamp 1022. The limiting rod 1025 is used to cooperate with the moving clamp 1022. When the telescopic part of the electric telescopic rod 1023 extends, the moving clamp 1022 contacts the limiting rod 1025 and overcomes the elastic force of the torsion spring to fold parallel to the telescopic part, so that the moving clamp 1022 passes through in one direction with a low profile. When the movable clamping plate 1022 passes the limiting rod 1025, the movable clamping plate 1022 automatically unfolds to be perpendicular to the telescopic part under the action of the torsion spring, so that the movable clamping plate 1022 passes from the front side of the protective film 103 to the rear side of the protective film 103; realizing the one-way retraction of the end of the protective film 103; the movable clamping plate 1022 will also pass through the limiting rod 1025 in the retraction path, at which time the limiting rod 1025 is not limited and can move freely; the limiting rod 1025 and the hinge shaft are equipped with a torsion spring at the hinge to reset it; The limiting rod 1025 cooperates with the moving clamp 1022, and the moving clamp 1022 is folded and unfolded by mechanical triggering, realizing a pure mechanical logic of one-way passage, automatic unfolding and retraction clamping. The release and retraction reset of the end of the protective film 103 can be completed without additional sensors.

[0029] Example 2 A method for operating a transient membrane pressing device for polar groups includes the following steps: S1: Place each pole group 3 into the respective placement area 205 formed by adjacent partition plates 201, and allow each pole group 3 to fall into the temporary enclosure space enclosed by the corresponding protective film 103; after the pole group 3 is placed, the protective film 103 forms a U-shaped enclosure, providing initial protection for subsequent pressing. S2: Drive the pressure head 202 downward to flatten and adjust the upper surface of the electrode group 3 in each placement area 205, so that the upper surface of each electrode group 3 is kept flat, and at the same time, the protective film 103 is pressed and adhered to the surface of the electrode group 3; during this process, the other end of the protective film 103 is fed from the solid-deposition conversion part 102 with low resistance to supplement the length of the protective film 103 required to wrap the electrode group 3; while flattening, the low-damping clamping is used to make the protective film 103 automatically slide and feed, adaptively compensate for the wrapping circumference, and avoid the film material from breaking or piling up; S3: Drive the partition plate 201 to slide horizontally, so that the adjacent partition plates 201 move closer to each other and laterally press the pole group 3. At the same time, the pre-compression spring in the positioning sleeve 204 is compressed; the lateral pressing of the partition plate 201 achieves tight assembly, and the pre-compression spring stores energy for reset. S4: As Figure 4 As shown, the driving head 202 moves downward to press the electrode group 3 and its surrounding protective film 103 into the battery compartment simultaneously; at this time, the fixed film part 101 is also pressed downward simultaneously and the protective film 103 is in a U-shape; the driving head 202 presses the electrode group 3 and the protective film 103 into the battery compartment as a whole, and the protective film 103 is pressed into a U-shape at the bottom of the compartment, still maintaining the isolation function; S5: The driving head 202 is driven to move upward to reset, and the fixed film part 101 is reset upward by the action of the reset mechanism 206, pulling the protective film 103; at the same time, the solid-detachment conversion part 102 releases the protective film 103, and the battery casing is moved out along the lateral conveying and further separated from the protective film 103; at this time, the protective film 103 is in an inclined state, and this inclined state also leaves space for the moving clamp 1022 to enter the outside of the protective film 103, that is, the distance between the outside of the protective film 103 and the bottom of the fixed film part 101; the reset mechanism 206 drives the fixed film part 101 to pull upward, the solid-detachment conversion part 102 releases the end of the protective film 103, and combined with the removal of the casing, the protective film 103 is extracted without residue; S6: The telescopic part of the electric telescopic rod 1023 in the drive solid-detachment conversion unit 102 extends, causing the movable clamping plate 1022 to contact the limiting rod 1025 and fold to be parallel to the telescopic part against the torsion spring force, passing through the limiting rod 1025 in one direction; then, after passing through, the movable clamping plate 1022 automatically unfolds to be perpendicular to the telescopic part under the action of the torsion spring; realizing the straightened state before the protective film 103 is completely separated from the battery slot, and the function of moving from the inside to the outside of the protective film 103; the movable clamping plate 1022 flips from the inside to the outside of the protective film 103 by means of the mechanical trigger of the limiting rod 1025, establishing the correct relative position for the return film end; S7: As Figure 8 and Figure 9As shown, the electric telescopic rod 1023 controls the retraction of the telescopic part, thereby retracting the protective film 103 until the moving clamping plate 1022 resets and clamps the protective film 103; at the same time, the pole group inlet mechanism 2 releases the pressure on the partition plate 201 and resets to a distance from each other, the pre-compression spring in the positioning sleeve 204 releases energy, assisting the partition plate 201 to separate, completing one working cycle; the moving clamping plate 1022 retracts the end of the protective film 103 and re-clamps it, the pre-compression spring in the positioning sleeve 204 drives the partition plate 201 to reset, realizing fully automatic continuous cyclic operation.

[0030] 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. A transient electrode packing pressing device, comprising an electrode pack insertion mechanism (2); the electrode pack insertion mechanism (2) is used to press an electrode pack (3) into a battery slot of a battery casing; characterized in that, It also includes a transient coating mechanism (1); The transient coating mechanism (1) includes a fixed film section (101), a solid-deposition conversion section (102), and a protective film (103); one end of the protective film (103) is detachably connected to the fixed film section (101); the other end of the protective film (103) is releasably clamped and connected to the solid-deposition conversion section (102); The electrode group insertion mechanism (2) is slidably connected with several partition plates (201) along the horizontal direction. The partition plates (201) are used to press the electrode group (3) laterally. Several pressure heads (202) are mounted above the electrode group insertion mechanism (2). The pressure heads (202) are used to press the electrode group (3) downward into the battery slot. On the opposite inner surfaces of each pair of adjacent partition plates (201), the fixed film part (101) is vertically slidably connected on one side, and the solid-deposition conversion part (102) is fixedly connected on the other side; the protective film (103) temporarily wraps the electrode group (3), and is extracted after the pressure head (202) presses each electrode group (3) and the corresponding fixed film part (101) into the battery slot simultaneously.

2. The electrode group transient coating pressing device as described in claim 1, characterized in that, One end of the protective film (103) is detachably connected to the fixed film part (101) for clamping and fixing, and the fixed film part (101) is provided with first anti-slip texture (1011) on both sides of the protective film (103); a reset mechanism (206) for resetting and rebounding the top of the fixed film part (101) is fixedly installed on the electrode group groove mechanism (2); a reset spring is installed inside the reset mechanism (206).

3. The electrode group transient coating pressing device as described in claim 2, characterized in that, The film fixing part (101) adopts an electromagnetic lock structure (1012), which clamps and fixes one end of the protective film (103).

4. The electrode group transient coating pressing device as described in claim 2, characterized in that, The film fixing part (101) includes a first clamping plate (1013) and a second clamping plate (1014); one end of the protective film (103) is clamped between the first clamping plate (1013) and the second clamping plate (1014), and the first clamping plate (1013) and the second clamping plate (1014) are fixedly installed by bolts (1015).

5. The electrode group transient coating pressing device as described in claim 1, characterized in that, The solid-detachment conversion unit (102) includes a fixed clamping plate (1021) and a movable clamping plate (1022); an electric telescopic rod (1023) is fixedly installed on each of the bottom sides of the fixed clamping plate (1021); the telescopic end of the electric telescopic rod (1023) is hinged to the movable clamping plate (1022), and a one-way check mechanism (1024) is provided at the hinge point between the telescopic end of the electric telescopic rod (1023) and the movable clamping plate (1022).

6. The electrode group transient coating pressing device as described in claim 5, characterized in that, The pole group inlet mechanism (2) also includes a guide post (203) and a positioning sleeve (204). The guide post (203) is inserted through a plurality of partition plates (201) to provide guidance for the horizontal sliding of the partition plates (201); A placement area (205) for placing the pole group (3) is formed between two adjacent partition plates (201). The positioning sleeve (204) is sleeve-shaped and passes through the guide post (203). It is located between each pair of adjacent partition plates (201) and abuts against each of the two partition plates (201). The positioning sleeve (204) is also equipped with a pre-compression spring. The pre-compression spring is compressed when the adjacent partition plates (201) are pressed together, and releases energy after the pressing is completed, driving the adjacent partition plates (201) to separate and reset. The positioning sleeve (204) is rotatably connected to a limiting rod (1025) via a hinge shaft, and the limiting rod (1025) and the hinge shaft are unidirectional swing structures; the limiting rod (1025) is used to cooperate with the moving clamp (1022): When the telescopic part of the electric telescopic rod (1023) extends, the moving clamp (1022) contacts the limiting rod (1025) and overcomes the elastic force of the torsion spring to fold parallel to the telescopic part, so that the moving clamp (1022) passes through in one direction with a low profile. When the movable clamp (1022) passes the limiting rod (1025), the movable clamp (1022) automatically unfolds to be perpendicular to the telescopic part under the action of the torsion spring, so that the movable clamp (1022) passes from the front side of the protective film (103) to the rear side of the protective film (103); realizing the one-way retraction of the end of the protective film (103); when retracting, the limiting rod (1025) swings to make way.

7. The transient coating pressing device for an electrode group as described in claim 6, characterized in that, The opposing inner surfaces of the fixed clamping plate (1021) and the movable clamping plate (1022) are both smooth planes without anti-slip textures, so that the clamping force applied by both to the other end of the protective film (103) is only slightly damped, allowing the protective film (103) to slide and feed under tension.

8. The electrode group transient coating pressing device as described in claim 1, characterized in that, The protective film (103) is a polymer film with a thickness of 0.05mm-0.15mm, a tensile strength ≥200MPa, a surface friction coefficient ≤0.4, a tear strength ≥100kN / m, and a heat shrinkage rate ≤0.5%.

9. The electrode group transient coating pressing device as described in claim 8, characterized in that, The protective film (103) is made of one or more composites of polyester film (PET), thermoplastic polyurethane film (TPU), polyamide film (nylon), polyvinyl chloride film (PVC), or polyethylene film (PE).

10. The operating method of the transient coating pressing device for pole groups as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Place each pole group (3) into the respective placement area (205) formed by the adjacent partition plates (201), and let each pole group (3) fall into the temporary enclosure space surrounded by the corresponding protective film (103); S2: Drive the pressure head (202) downward to flatten and adjust the upper surface of the electrode group (3) in each placement area (205) so that the upper surface of each electrode group (3) remains flat, and at the same time, the protective film (103) is pressed and adhered to the surface of the electrode group (3); during this process, the other end of the protective film (103) is fed from the solid-deposition conversion part (102) with low resistance to supplement the length of the protective film (103) required to wrap the electrode group (3); S3: Drive the partition plate (201) to slide horizontally, so that the adjacent partition plates (201) move closer to each other and laterally press the pole group (3), while the pre-compression spring in the positioning sleeve (204) is compressed. S4: Drive the pressure head (202) to move downwards, and press the electrode group (3) together with its outer protective film (103) into the battery slot simultaneously; at this time, the protective film (103) is in a U-shape. S5: Drive the pressure head (202) to move upward to reset. The fixed film part (101) is reset upward by the reset mechanism (206) and pulls the protective film (103). At the same time, the solid-detachment conversion part (102) releases the protective film (103), and the battery casing is transported and moved out laterally to further separate from the protective film (103). At this time, the protective film (103) is in an inclined state. S6: Drive the extension of the electric telescopic rod (1023) in the fixed-detachment conversion unit (102) to extend, so that the moving clamp (1022) contacts the limiting rod (1025) and folds against the torsion spring force to be parallel to the extension, passing through the limiting rod (1025) in one direction; then the rear moving clamp (1022) automatically unfolds to be perpendicular to the extension under the action of the torsion spring; realizing the function of moving from the inside to the outside of the protective film (103) before the protective film (103) is completely detached from the battery slot. S7: The electric telescopic rod (1023) controls the telescopic part to retract, thereby retracting the protective film (103) until the moving clamp (1022) is reset and clamps the protective film (103); at the same time, the pole group groove mechanism (2) releases the pressure on the partition plate (201) and resets away from each other, the pre-compression spring in the positioning sleeve (204) releases energy, assists the partition plate (201) to separate, and completes one working cycle.

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