WO2023193541A1 - 一种包膜装置 - Google Patents

一种包膜装置 Download PDF

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Publication number
WO2023193541A1
WO2023193541A1 PCT/CN2023/078513 CN2023078513W WO2023193541A1 WO 2023193541 A1 WO2023193541 A1 WO 2023193541A1 CN 2023078513 W CN2023078513 W CN 2023078513W WO 2023193541 A1 WO2023193541 A1 WO 2023193541A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction plate
horizontal direction
base
suction
plate
Prior art date
Application number
PCT/CN2023/078513
Other languages
English (en)
French (fr)
Inventor
唐晓龙
孙一舟
Original Assignee
无锡先导智能装备股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 无锡先导智能装备股份有限公司 filed Critical 无锡先导智能装备股份有限公司
Publication of WO2023193541A1 publication Critical patent/WO2023193541A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/14—Cells with non-aqueous electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the utility model relates to the technical field of battery manufacturing equipment, in particular to a coating device.
  • the bottom surface of the battery core is soft, when the bottom surface of the battery core is coated, the bottom surface of the battery core is pressed and easily wrinkles, causing the battery core to be unqualified and affecting the coating accuracy.
  • a coating device includes: a carrying mechanism for carrying products to be coated; the coating mechanism includes a driving component and a film suction component, and the film suction component includes a mounting base, a first suction plate, and a second suction plate and a third suction plate; the mounting seat is installed on the driving end of the driving assembly and is located above the carrying mechanism; the first suction plate, the second suction plate and the third suction plate are along the first horizontal direction are arranged in sequence on the side of the mounting seat facing the carrying mechanism, and are used to jointly adsorb film materials; and a smoothing mechanism, including two respectively arranged on both sides of the carrying mechanism in the first horizontal direction.
  • each of the smoothing components includes a flexible smoothing sheet, and the flexible smoothing sheet of each of the smoothing components is configured to be controllably inserted into the side and upper end surface of the product.
  • the connection points are smoothed; wherein, the driving component is used to drive the mounting base to rise and fall, and during the descending process of the mounting base, it can drive the second suction plate to contact the upper end surface of the product; when the mounting base is lowered, When the second suction plate is in contact with the upper end surface of the product, the first suction plate and the third suction plate can rotate relative to the mounting base to be respectively aligned with the product in the first horizontal direction. The sides are in contact with each other.
  • the film suction assembly has a first state and a second state; when the film suction assembly is in the first state, both the first suction plate and the third suction plate are in contact with each other.
  • the second suction plate is parallel, and the first suction plate, the second suction plate and the third suction plate are on the same horizontal plane; when the film suction assembly is in the second state, the first suction plate The end of the third suction plate away from the second suction plate is rotated toward the carrying mechanism to be perpendicular to the second suction plate.
  • the carrying mechanism includes a carrying frame, a positioning base and two clamping assemblies; the positioning base is provided on the carrying frame for carrying the product; the two clamping assemblies are placed on the carrier on, and respectively located on both sides of the positioning base in the second horizontal direction perpendicular to the first horizontal direction; the two clamping assemblies are configured to controllably approach or move away from each other to clamp or loosen said product.
  • the film suction assembly further includes a lifting base and a first rotational driving member.
  • the lifting base is connected to the driving end of the driving assembly, and the mounting base is rotatably connected around the first rotation axis.
  • the first rotational driving member is provided on the lifting base and is drivingly connected to the mounting base; wherein the first rotation axis is parallel to the vertical direction.
  • the film suction assembly further includes a first rotating shaft and a second rotating driving member.
  • the first rotating shaft is rotatably connected to the mounting base, and the second rotating driving member is disposed on the mounting base. on the mounting base and drivingly connected with the first rotating shaft; one end of the first suction plate close to the second suction plate is connected to the first rotating shaft, and the axial direction of the first rotating shaft is in contact with the first rotating shaft.
  • the two horizontal directions are parallel, and the second horizontal direction is perpendicular to the first horizontal direction.
  • the film suction assembly further includes a second rotating shaft and a third rotating driving member.
  • the second rotating shaft is rotatably connected to the mounting base, and the third rotating driving member is disposed on the mounting base. on the mounting base and drivingly connected to the second rotating shaft; one end of the third suction plate close to the second suction plate is connected to the second rotating shaft, and the axial direction of the second rotating shaft is in contact with the third rotating shaft.
  • the two horizontal directions are parallel, and the second horizontal direction is perpendicular to the first horizontal direction.
  • each of the smoothing components includes a fixed base and a moving base, the moving base is provided on the fixed base, and the flexible smoothing piece is installed on the moving base; wherein, The movable base can be controllably moved in a preset direction relative to the fixed frame to drive the flexible smoothing piece to be inserted into or withdrawn from the connection between the side and the upper end surface of the product.
  • the preset direction intersects both the first horizontal direction and the vertical direction.
  • the coating device further includes a welding mechanism, which includes two welding components respectively arranged on both sides of the carrying mechanism in the first horizontal direction, each of which The welding assembly is used to weld the membrane material to the side of the product.
  • each of the welding components includes a fixed frame, a base plate and a welding head.
  • the base plate is disposed on the fixed frame and can be controlled relative to the fixed frame along the first horizontal direction. Move, the welding head is installed on the base plate.
  • each of the welding components includes three welding heads, and the three welding heads are first welding heads spaced apart along a second horizontal direction perpendicular to the first horizontal direction. , the second welding head and the third welding head; wherein, the positions of the first welding head and the third welding head relative to the base plate in the second horizontal direction are adjustable.
  • the battery core to be coated is positioned on the carrying mechanism.
  • the driving component drives the mounting base downward until the mounting base drives the second suction plate to descend to contact the upper end surface of the battery core on the carrying mechanism, thereby attaching the film material adsorbed by the second suction plate to the upper end surface of the battery core.
  • the first suction plate and the second suction plate are controlled to rotate toward both sides of the battery core in the first horizontal direction respectively, and then stop at a certain angle (for example, 30°).
  • the flexible smoothing sheets that control the two smoothing components are respectively inserted into the connection between the side of the battery core in the first horizontal direction and the upper end surface of the battery core, and smooth the surface of the battery core and the membrane material to prevent Wrinkles occur on the surface of the battery core and the membrane material.
  • the flexible smoothing pieces controlling the two smoothing components return to their initial positions.
  • the first suction plate and the second suction plate are controlled to continue to rotate toward both sides of the battery core in the first horizontal direction until they are in contact with the two sides of the battery core in the first horizontal direction, so that they are adsorbed on the second side.
  • the film materials on the first suction plate and the second suction plate are attached to both sides of the battery core in the first horizontal direction.
  • the driving assembly drives the mounting base to rise, and drives the first suction plate, the second suction plate and the third suction plate to rise (at this time, the membrane material and The second suction plate is separated and remains attached to the upper end surface of the battery core).
  • the coating device of the present invention after applying the film material to the upper end surface of the battery core, uses the two smoothing components of the smoothing mechanism to seal the connection between the side surface and the upper end surface of the battery core (i.e., the film material and the battery core After smoothing, the first suction plate and the third suction plate are used to wrap the two sides of the battery core, thereby avoiding wrinkles on the upper end surface of the battery core, which is beneficial to Ensure battery core quality and coating accuracy.
  • Figure 1 is a schematic structural diagram of a coating device in an embodiment of the present invention.
  • Figure 2 is a front view of the carrying mechanism of the coating device shown in Figure 1;
  • Figure 3 is a side view of the carrying mechanism shown in Figure 2;
  • Figure 4 is a front view of the coating mechanism of the coating device shown in Figure 1;
  • Figure 5 is a side view of the coating mechanism shown in Figure 4.
  • Figure 6 is a front view of the smoothing mechanism of the coating device shown in Figure 1;
  • Figure 7 is a side view of the smoothing component of the smoothing mechanism shown in Figure 6;
  • Figure 8 is a front view of the welding assembly of the welding mechanism shown in Figure 1;
  • Figure 9 is a side view of the welded assembly shown in Figure 8.
  • FIG. 10 is a top view of the welded assembly shown in FIG. 8 .
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.
  • connection In this utility model, unless otherwise expressly stipulated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements, unless otherwise Clear limits.
  • connection or integration
  • connection can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium
  • it can be an internal connection between two elements or an interaction between two elements, unless otherwise Clear limits.
  • specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • the first feature "on” or “below” the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • An embodiment of the present invention provides a coating device for coating products to be coated.
  • the product can be battery cell A, or of course other products that require coating, which is not limited here.
  • this article takes battery cell A as an example.
  • the coating device includes a carrying mechanism 10, a coating mechanism 20 and a smoothing mechanism (not labeled in the figure).
  • the carrying mechanism 10 is used to carry the battery core A.
  • the wrapping mechanism 20 includes a driving component 21 and a film suction component 22 .
  • the film suction assembly 22 includes a mounting base 224, a first suction plate 221, a second suction plate 222 and a third suction plate 223.
  • the mounting base 224 is installed on the driving end of the driving assembly 21 and is located above the carrying mechanism 10 .
  • the driving assembly 21 is used to drive the mounting base 224 to move up and down.
  • the first suction plate 221 , the second suction plate 222 and the third suction plate 223 are sequentially arranged on the side of the mounting base 224 facing the carrying mechanism 10 along the first horizontal direction X, and are used to jointly absorb film materials.
  • the smoothing mechanism includes two smoothing components 31 respectively disposed on both sides of the bearing mechanism 10 in the first horizontal direction X.
  • Each smoothing component 31 includes a flexible smoothing piece 313, and the flexible smoothing piece 313 of each smoothing component 31 is configured to be controllably inserted into the connection between the side a2 and the upper end surface a1 of the battery core A for smoothing. flat, thereby preventing the upper end surface a1 of battery cell A from being wrinkled under pressure.
  • the second suction plate 222 When the mounting base 224 is driven down by the driving assembly 21, the second suction plate 222 can be driven to contact the upper end surface a1 of the battery core A.
  • the first suction plate 221 and the third suction plate 223 can rotate relative to the mounting base 224 to respective sides of the battery core A in the first horizontal direction X. a2 is in contact with each other.
  • the battery core A to be coated is positioned on the carrying mechanism 10 .
  • the driving assembly 21 drives the mounting base 224 to descend until the mounting base 224 drives the second suction plate 222 to descend to contact the upper end surface a1 of the battery core A on the carrying mechanism 10, thereby pasting the film material adsorbed by the second suction plate 222. Connect it to the upper end surface a1 of battery core A.
  • the first suction plate 221 and the second suction plate 222 are controlled to rotate toward both sides of the battery core A in the first horizontal direction X respectively, and then stop at a certain angle (for example, 30°).
  • the flexible smoothing pieces 313 of the two smoothing components 31 are respectively inserted into the connection between the side a2 of the battery core A in the first horizontal direction X and the upper end surface a1 of the battery core A, and the surface of the battery core A is Smooth it with the membrane material to prevent wrinkles on the surface of battery cell A and the membrane material.
  • the flexible smoothing pieces 313 of the two smoothing components 31 are controlled to return to the initial position.
  • first suction plate 221 and the second suction plate 222 are controlled to continue to rotate toward both sides of the battery core A in the first horizontal direction Contact, so that the film material adsorbed on the first suction plate 221 and the second suction plate 222 is attached to the two side surfaces a2 of the battery core A in the first horizontal direction X.
  • the driving assembly 21 drives the mounting base 224 to rise and drives the first suction plate 221 and the second suction plate 222
  • the third suction plate 223 rises (at this time, the film material is separated from the second suction plate 222 and remains attached to the upper end surface a1 of the battery core A).
  • the coating device of the present invention after applying the film material to the upper end surface a1 of the battery core A, uses the two smoothing components 31 of the smoothing mechanism to connect the side surface a2 of the battery core A and the upper end surface a1 ( That is, the connection between the membrane material and the upper end surface a1 of battery core A ), and then use the first suction plate 221 and the third suction plate 223 to wrap the two sides a2 of the battery core A, thereby avoiding wrinkles on the upper end surface a1 of the battery core A. It is helpful to ensure the quality and coating accuracy of battery core A.
  • the film material may be an insulating film, such as Mylar film.
  • the battery core A can be placed upside down on the carrying mechanism 10 so that the bottom surface of the battery core A faces upward, that is, The bottom surface of battery cell A is the upper end surface a1 of battery cell A.
  • the second suction plate 222 is used to cover the bottom surface of the battery core A (i.e., the upper end surface a1), and the first suction plate 221 and the second suction plate 222 are used to cover the two side surfaces a2 of the battery core A (i.e., on the first The two sides a2) in the horizontal direction X are coated.
  • the suction film assembly 22 has a first state and a second state.
  • the first suction plate 221 and the third suction plate 223 are parallel to the second suction plate 222, and the first suction plate 221, the second suction plate 222 and the third suction plate 223 are three
  • the two should be on the same horizontal plane so that the three can absorb the film material together.
  • the ends of the first suction plate 221 and the third suction plate 223 away from the second suction plate 222 both rotate toward the carrying mechanism 10 to be perpendicular to the second suction plate 222, so that the first suction plate 221 and the third suction plate 223 can rotate to abut the two side surfaces a2 of the battery core A.
  • the film suction assembly 22 when actually performing the wrapping operation, first the film suction assembly 22 is in the first state, so that the first suction plate 221, the second suction plate 222 and the third suction plate 223 jointly suck the film material. Then, under the driving action of the driving assembly 21 , the first suction plate 221 , the second suction plate 222 and the third suction plate 223 descend together with the mounting base 224 until the second suction plate 222 and the upper end surface of the battery core A a1 touches. Then, the end of the first suction plate 221 and the third suction plate 223 away from the second suction plate 222 is controlled to rotate toward the carrying mechanism 10 at a certain angle (for example, 30°).
  • a certain angle for example, 30°
  • the two flexible smoothing pieces 313 are controlled to be inserted into the connection between the side a2 and the upper end surface a1 of the battery core A to smooth the surface of the battery core A. After smoothing, the two flexible smoothing pieces 313 are controlled to return to the initial position. Then, the first suction plate 221 and the third suction plate 223 are controlled to continue to rotate until the film suction assembly 22 is in the second state. At this time, the first suction plate 221 and the third suction plate 223 and the battery core A are in the first horizontal direction. The two side surfaces a2 on X are in contact.
  • the first suction plate 221, the second suction plate 222 and the third suction plate 223 release the adsorption of the film material, so that the film material is attached to the upper end surface a1 and the two side surfaces a2 of the battery core A. Furthermore, the first suction plate 221 and the second suction plate 222 are controlled to rotate in reverse direction until the suction film assembly 22 is in the first state. Finally, driven by the driving assembly 21, the first suction plate 221, the second suction plate 222 and the third suction plate 223 rise to the initial position along with the mounting base 224, so as to suck the film material again for the next coating. Be prepared for homework.
  • the bearing mechanism 10 includes a bearing frame 11 , a positioning base 14 and two clamping assemblies 12 .
  • the positioning base 14 is provided on the carrying frame 11 for carrying the battery core A.
  • the two clamping assemblies 12 are both disposed on the carrying frame 11 and are respectively located on both sides of the positioning base 14 in the second horizontal direction Y perpendicular to the first horizontal direction X.
  • the two clamping assemblies 12 are configured to controllably move toward or away from each other to clamp or loosen the positioning base 14 Cell A.
  • the positioning base 14 is used to position and support the battery core A during coating, and the two clamping components 12 are used to clamp and fix the battery core A in the second horizontal direction Y to prevent the battery core from falling during coating. A shakes or moves.
  • each clamping assembly 12 includes a moving plate 121 and a clamping block 122.
  • the moving plate 121 is movably connected to the carrier 11 along the second horizontal direction Y.
  • the clamping block 122 is disposed on the moving on board 121.
  • the movable plate 121 can be connected to the carrier 11 through a guide structure of slide rails and slide blocks, so that the slide rails and slide blocks are used to guide the movement of the movable plate 121 relative to the carrier 11 .
  • the carrying mechanism 10 also includes a clamping driving assembly 13 provided on the carrying frame 11.
  • the clamping driving assembly 13 is drivingly connected to the two moving plates 121 to drive the two moving plates 121 to drive the two clamping blocks 122 along the second
  • the horizontal directions Y move closer to or away from each other, thereby clamping or loosening the battery core A.
  • the clamping block 122 can float in the vertical direction relative to the moving plate 121, so that when the second suction plate 222 descends to offset the upper end surface a1 of the battery core A during the coating process, the clamping block 122 It can float downward together with the battery core A, thereby preventing relative movement between the clamping block 122 and the battery core A and scratching the battery core A.
  • flexible layers 123 are provided on the sides of the two clamping blocks 122 facing each other, that is, the clamping blocks 122 are in contact with the battery core A through the flexible layer 123 on the clamping block 122 to avoid pinching the battery core A.
  • the clamping driving assembly 13 includes two rollers 132 , a cam plate 131 , a first elastic member 133 and a second elastic member 134 .
  • the two rollers 132 are respectively installed on the two moving plates 121 .
  • the cam plate 131 is rotatably connected to the carrier 11 and is driven and matched with the two rollers 132 .
  • the cam plate 131 has a first position and a second position during rotation relative to the carrier 11 .
  • the cam plate 131 rotates to the first position, the cam plate 131 drives the two moving plates 121 to approach each other through the two rollers 132, thereby driving the clamping blocks 122 on the two moving plates 121 to clamp the battery core A.
  • the cam plate 131 rotates to the second position, the cam plate 131 drives the two moving plates 121 away from each other through the two rollers 132, thereby driving the clamping blocks 122 on the two moving plates 121 to release the battery core A.
  • Opposite ends of the first elastic member 133 are respectively connected to the two moving plates 121 to provide an elastic force that causes the two moving plates 121 to move closer to each other.
  • Opposite ends of the second elastic member 134 are respectively connected to the cam plate 131 and the carrier 11 to provide an elastic force that causes the cam plate 131 to rotate from the second position to the first position. In this way, the cam plate 131 can overcome the elastic force of the second elastic member 134 and rotate from the first position to the second position under the action of external force, so that the two moving plates 121 overcome the elastic force provided by the first elastic member 133 and drive the two clamps.
  • the holding block 122 is opened to loosen the battery core A or to facilitate placing the battery core A on the positioning base 14 .
  • the cam plate 131 When the external force disappears, under the action of the second elastic member 134, the cam plate 131 automatically rotates from the second position to the first position, and the two moving plates 121 approach each other under the action of the first elastic member 133 to clamp the electric circuit.
  • the first elastic member 133 may be a spring.
  • the second elastic member 134 may be a nitrogen gas spring.
  • the coating device also includes a conveyor line (not shown), and the carrying mechanism 10 is disposed on the conveyor line to transport the film. It is conveyed on the line and passes through the loading station, coating station and unloading station. In this way, during the actual coating operation, first, the conveyor line transports the carrying mechanism 10 to the loading station. At this time, the cam plate 131 is acted upon by an external force and rotates from the first position to the second position, so that the two clamping blocks 122 are Open so that the battery core A to be coated can be placed upside down on the positioning base 14. Then, the conveyor line transports the carrying mechanism 10 to the coating station. At this time, the carrying mechanism 10 is located below the second suction plate 222 .
  • the carrying mechanism 10 leaves the loading position, the external force disappears, causing the cam plate 131 to rotate from the second position to the first position, thereby driving the two clamping blocks 122 to clamp the battery core A. Then, the battery core A is coated using the coating mechanism 20 . After the coating is completed, the conveyor line conveyor carrying mechanism 10 moves to the unloading station. At this time, the cam plate 131 is acted upon by an external force and rotates from the first position to the second position, causing the two clamping blocks 122 to open for convenience. Remove the coated battery core A.
  • the force applying member can be provided at the loading station and the unloading station, so that when the carrying mechanism 10 moves to the loading station or the unloading station, the force applying member is coupled with the cam plate 131, Thereby, the cam plate 131 is driven to rotate from the first position to the second position.
  • the force-applying member is separated from the cam plate 131, so that the cam plate 131 automatically rotates from the second position to the first position under the action of the second elastic member 134.
  • the operator can also apply external force to the cam plate 131 to achieve clamping and opening of the two clamping blocks 122, which is not limited here.
  • the film suction assembly 22 also includes a lifting base 225 and a first rotational driving member 228.
  • the lifting base 225 is connected to the driving end of the driving assembly 21, and the mounting base 224 It is rotatably connected to the lifting base 225 around the first rotation axis.
  • the first rotation driving member 228 is disposed on the lifting base 225 and is drivingly connected with the mounting base 224 to drive the mounting base 224 to rotate around the first rotation axis.
  • the first rotation axis is parallel to the vertical direction.
  • the first rotary driving member 228 can be used to drive the mounting base 224 to rotate, thereby adjusting the orientation of the second suction plate 222 so that the second suction plate 222 matches the upper end surface a1 of the battery core A, so as to accurately align the battery core.
  • A is used for coating to improve coating quality.
  • the first rotary driving member 228 drives the mounting base 224 to rotate until the second suction plate 222 matches the upper end surface a1 of the battery core A.
  • the driving assembly 21 drives the lifting base 225 to descend, thereby driving the mounting base 224 and the first suction plate 221 , the second suction plate 222 and the third suction plate 223 on the mounting base 224 to descend until the second suction plate 222 is in contact with the battery core.
  • the upper end surface a1 of A is in contact with each other.
  • the driving assembly 21 drives the lifting base 225 to rise, thereby driving the mounting base 224 and the first suction plate 221 , the second suction plate 222 and the third suction plate 223 on the mounting base 224 to rise.
  • the first rotational drive 228 may be a servo motor.
  • the film suction assembly 22 also includes a first rotating shaft and a second rotating driving member 226.
  • the first rotating shaft is rotatably connected to the mounting base 224, and one end of the first suction plate 221 close to the second suction plate 222 is connected to on the first rotating shaft to rotate with the first rotating shaft.
  • the second rotating driving member 226 is installed on the mounting base 224 and is transmission connected with the first rotating shaft to drive the first rotating shaft to rotate.
  • the axial direction of the first rotating shaft is parallel to the second horizontal direction Y.
  • the second rotary drive member can 226 drives the first rotating shaft to rotate, thereby driving the first suction plate 221 to rotate relative to the second suction plate 222 .
  • the second rotational drive 226 may be a servo motor.
  • the second rotary driving member 226 may be drivingly connected to the first rotating shaft through a belt transmission structure.
  • the film suction assembly 22 also includes a second rotating shaft and a third rotating driving member 227.
  • the second rotating shaft is rotatably connected to the mounting base 224, and one end of the third suction plate 223 close to the second suction plate 222 is connected to the mounting base 224. on the second rotating shaft to rotate with the second rotating shaft.
  • the third rotating driving member 227 is installed on the mounting base 224 and is transmission connected with the second rotating shaft to drive the second rotating shaft to rotate.
  • the axial direction of the second rotating shaft is parallel to the second horizontal direction Y.
  • the second rotating shaft can be driven to rotate through the third rotary driving member 227, thereby driving the third suction plate 223 to rotate relative to the second suction plate 222.
  • the third rotation drive 227 may be a servo motor.
  • the third rotating driving member 227 may be drivingly connected to the second rotating shaft through a belt transmission structure.
  • the driving assembly 21 includes a support plate 211, a connecting seat 212, a first lifting driving member 213 and a second lifting driving member 214.
  • the connecting base 212 is connected to the support plate 211 in a liftable manner.
  • the first lifting driving member 213 is disposed on the supporting plate 211 and is drivingly connected with the connecting base 212 to drive the connecting base 212 to rise or fall relative to the supporting plate 211 .
  • the lifting base 225 is connected to the connecting base 212 in a liftable manner.
  • the second lifting driving member 214 is disposed on the connecting base 212 and is drivingly connected with the lifting base 225 to drive the lifting base 225 to rise or fall relative to the connecting base 212 .
  • the first lifting driving member 213 can rise or fall by driving the connecting seat 212, thereby driving the lifting seat 225 to rise or fall together, thereby driving the first suction plate 221, the second suction plate 222 and the third suction plate 223 to rise. or decline.
  • the second lifting driving member 214 can drive the lifting base 225 to rise or fall relative to the connecting seat 212, thereby driving the first suction plate 221, the second suction plate 222 and the third suction plate 223 to rise or fall.
  • the first suction plate 221, the second suction plate 222 and the third suction plate 223 can be raised or lowered quickly and over a long distance through the first lifting driving member 213, and can be realized through the second lifting driving member 214.
  • the first suction plate 221, the second suction plate 222 and the third suction plate 223 rise or fall slowly and in a short distance.
  • first the first lifting driving member 213 is started, thereby driving the first suction plate 221, the second suction plate 222 and the third suction plate 223 to rapidly descend until the second suction plate 222 is in contact with the electric motor. Stop when the upper end surface a1 of core A is separated by a small distance (can be set according to specific conditions, not limited here).
  • the second lifting driving member 214 starts, thereby driving the first suction plate 221, the second suction plate 222 and the third suction plate 223 to slowly descend until the second suction plate 222 contacts the upper end surface a1 of the battery core A and stops. .
  • setting up a two-stage lifting drive is beneficial to improving the coating efficiency on the one hand; and on the other hand, it is beneficial to avoid the second suction plate 222 from causing a large impact on the battery core A and damaging the battery core A.
  • a pressure sensor 215 is provided between the connecting seat 212 and the lifting seat 225, so that the pressure sensor 215 can be used to detect the pressure exerted on the battery core A when the second suction plate 222 descends, so as to prevent the battery core A from being damaged. The pressure is too high and battery cell A is damaged.
  • connection base 212 can be connected by providing a slide rail and a slider structure between the connection base 212 and the support plate 211.
  • the lifting is guided.
  • a slide rail and a slider structure may also be provided between the lifting base 225 and the connecting base 212 to guide the lifting and lowering of the lifting base 225.
  • the first lifting driving member 213 may be a servo motor, and the first lifting driving member 213 and the connecting base 212 may be transmission connected through a screw pair or a belt drive or other structures.
  • the second lifting driving member 214 may be an electric cylinder.
  • the smoothing component 31 includes a fixed base 311 and a movable base 312 .
  • the moving base 312 is installed on the fixed base 311
  • the flexible smoothing piece 313 is installed on the moving base 312 .
  • the movable base 312 can be controlled to move relative to the fixed base 311 along the preset direction U to drive the flexible smoothing piece 313 to be inserted into or withdrawn from the connection between the side a2 and the upper end surface a1 of the battery core A, and then utilize the flexible smoothing.
  • the sheet 313 smoothes the battery core A to avoid wrinkles on the surface of the battery core A.
  • the movable base 312 is controlled to move toward the battery core A in the preset direction U relative to the fixed base 311 until the flexible smoothing piece 313 on the movable base 312 is inserted into the side a2 and upper surface of the battery core A.
  • the connection point of the end face a1 is used to smooth the battery core A and avoid wrinkles in the battery core A.
  • the moving base 312 is controlled to move in the reverse direction relative to the fixed base 311 to the initial position, so that the flexible smoothing piece 313 on the moving base 312 retreats away from the battery core A.
  • the above-mentioned preset direction U intersects both the first horizontal direction X and the vertical direction.
  • the preset direction U is 45° to both the first horizontal direction X and the vertical direction.
  • the smoothing assembly 31 also includes a smoothing driving member 314, which is installed on the fixed base 311 and is drivingly connected with the moving base 312 to drive the moving base 312 relative to the fixed base 311. Move in the preset direction U.
  • the smoothing drive 314 may be a pneumatic cylinder.
  • the smoothing assembly 31 also includes a guide shaft 315.
  • One end of the guide shaft 315 is fixedly connected to the movable base 312, and the other end is slidably matched with the fixed base 311, so that the movable base 312 moves under the guidance of the guide shaft 315. , thereby driving the flexible smoothing piece 313 to accurately move to the smoothing position of the battery core, ensuring that the battery core A is smoothed.
  • the axial direction of the guide shaft 315 is the above-mentioned preset direction U.
  • the coating device also includes a welding mechanism (not shown).
  • the welding mechanism includes components respectively arranged on the bearing mechanism 10 in the first horizontal direction X. Two welded components 41 on both sides. Each welding component 41 is used to weld the film material to the side a2 of the battery core A.
  • the welding component 41 on the same side as the first suction plate 221 welds the membrane material on the first suction plate 221 to the side a2 of the battery core A
  • the welding component 41 on the same side as the third suction plate 223 welds the third suction plate 223 .
  • the membrane material on the plate 223 is welded to the side a2 of the battery core A.
  • the first suction plate 221, the second suction plate 222 and the third suction plate 223 all release the adsorption of the film material, and the first suction plate 221 and the third suction plate 223 rotate to the above-mentioned first state, and the driving assembly 21 drives the first suction plate 221, the second suction plate 222 and the third suction plate.
  • the plate 223 rises, and at this time, the film material remains covering the upper end surface a1 and the two side surfaces a2 of the battery core A.
  • the coating device of the present invention can complete the two processes of coating and welding, that is, integrating coating and welding into one.
  • the equipment has a compact structure, saves space, is convenient to operate, and has high coating accuracy, which greatly improves production. efficiency.
  • each welding component 41 includes a fixing frame 410, a bottom plate 411 and a welding head.
  • the bottom plate 411 is disposed on the fixed frame 410 and can controllably move relative to the fixed frame 410 along the first horizontal direction X.
  • the welding head is installed on the bottom plate 411 to move along the first horizontal direction X with the bottom plate 411 to move closer to or farther away from the side a2 of the battery core A.
  • the control base plate 411 drives the welding head to move close to the battery core A along the first horizontal direction X until the welding head contacts the membrane material, and the membrane material is welded to the side a2 of the battery core A.
  • control bottom plate 411 drives the welding head to move away from the battery core A along the first horizontal direction X and return to the initial position to avoid the welding head from interfering with the rotation of the first suction plate 221 or the second suction plate 222 .
  • each welding assembly 41 also includes a welding driving part 412, which is installed on the fixed frame 410 and is drivingly connected with the base plate 411 to drive the base plate 411 to move along the first horizontal direction X.
  • welding drive 412 may be a cylinder.
  • a slide rail and a slider guide structure may be provided between the base plate 411 and the fixed frame 410 to guide the movement of the base plate 411 along the first horizontal direction X.
  • each welding component 41 includes three welding heads, which are respectively a first welding head 413a, a second welding head 413b and a third welding head 413c that are spaced apart along the second horizontal direction Y. .
  • the positions of the first welding head 413a and the third welding head 413c relative to the bottom plate 411 in the second horizontal direction Y are adjustable.
  • the second welding head 413b is fixedly connected to the base plate 411. In this way, the three welding points a3 (see Figure 2) on the corresponding side a2 of the battery core A are welded through the three welding heads.
  • the purpose of adjusting the distance between the respective welding heads can be achieved, which is conducive to the application of various specifications of battery cores A and improves the Device compatibility.
  • each welding assembly 41 also includes a first locking member (not shown), which can lock or loosen the first welding head 413a and the base plate 411. In this way, when it is necessary to adjust the position of the first welding head 413a, the first locking member is operated to loosen the first welding head 413a and the bottom plate 411, so that the first welding head 413a can move along the first slide groove 4112, thereby adjusting the first welding head 413a.
  • the first locking member is operated to lock the first welding head 413a and the bottom plate 411, thereby preventing the first welding head 413a from continuing to move.
  • the first locking member may be a fastening screw.
  • each welding assembly 41 also includes a second locking member, which can lock or loosen the third welding head 413c and the bottom plate 411. In this way, when it is necessary to adjust the position of the third welding head 413c, operate the second locking member to loosen the third welding head 413c and the bottom plate 411, so that the third welding head 413c can move along the second slide groove 4114, thereby adjusting the third welding head 413c.
  • the second locking member is operated to lock the third welding head 413c and the bottom plate 411, thereby preventing the third welding head 413c from continuing to move.
  • the second locking member may be a fastening screw.
  • the fixed base 311 is connected to the fixed frame 410 through the adjusting plate 316, and the position of the fixed base 311 relative to the adjusting plate 316 in the vertical direction can be adjusted. Adjust to ensure that the flexible smoothing piece 313 can be accurately inserted into the position where the battery core A needs to be smoothed. It should be noted that the fixed base 311 can be adjusted in the vertical direction by using waist-shaped holes and fastening screws. Of course, other methods can also be used, which are not limited here.
  • the adjustment of the insertion position of the flexible smoothing sheet 313 is not limited to adjusting the vertical position of the fixed base 311 relative to the adjustment plate 316 .
  • the insertion position of the flexible smoothing piece 313 can also be adjusted by controlling the rotation of the fixed base 311 relative to the adjusting plate 316 .
  • the fixed base 311 is rotatably connected to the adjusting plate 316 around an axis parallel to the second horizontal direction Y (for example, the fixed base 311 is installed on the adjusting plate 316 through a rotating shaft), and is locked and fixed on the adjusting plate 316 by a fastening screw.
  • On board 316 On board 316.

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Abstract

一种包膜装置，包括：承载机构（10）；包膜机构（20），包括驱动组件（21）及吸膜组件（22），吸膜组件（22）包括安装座（224）、第一吸板（221）、第二吸板（222）及第三吸板（223）；抚平机构；驱动组件（21）驱动安装座（224）下降过程中能带动第二吸板（222）与产品的上端面（a1）抵接；当第二吸板（222）与产品的上端面（a1）抵接时，第一吸板（221）和第三吸板（223）能够相对安装座（224）转动至分别与产品在第一水平方向上的侧面（a2）相抵接。

Description

一种包膜装置 技术领域
本实用新型涉及电池制造设备技术领域，特别是涉及一种包膜装置。
背景技术
在锂电池生产线中，对电池质量要求较高，为了保护电芯与铝壳之间绝缘，需要在电芯表面包覆一层绝缘膜(例如Mylar膜)，以起到绝缘效果。
技术问题
由于电芯的底面较软，在对电芯底面包膜时电芯的底面受压而容易产生褶皱，导致电芯不合格，且影响包膜精度。
技术解决方案
基于此，有必要针对现有技术中在包膜时电芯的底面因受压而容易产生褶皱，导致电芯不合格，且包膜精度较差的问题，提供一种改善上述缺陷的包膜装置。
一种包膜装置，包括：承载机构，用于承载待包膜的产品；包膜机构，包括驱动组件及吸膜组件，所述吸膜组件包括安装座、第一吸板、第二吸板及第三吸板；所述安装座安装在所述驱动组件的驱动端，且位于所述承载机构的上方；所述第一吸板、第二吸板及第三吸板沿第一水平方向依次设置在所述安装座朝向所述承载机构的一侧，且用于共同吸附膜材；及抚平机构，包括分别设置在所述承载机构在所述第一水平方向上的两侧的两个抚平组件，每一所述抚平组件包括柔性抚平片，且每一所述抚平组件的所述柔性抚平片被构造为可受控地插入至所述产品的侧面与上端面的连接处进行抚平；其中，所述驱动组件用于驱动所述安装座升降，所述安装座下降的过程中能够带动所述第二吸板与所述产品的上端面抵接；当所述第二吸板与所述产品的上端面抵接时，所述第一吸板和所述第三吸板能够相对所述安装座转动至分别与所述产品在所述第一水平方向上的侧面相抵接。
在其中一个实施例中，所述吸膜组件具有第一状态和第二状态；当所述吸膜组件处于所述第一状态时，所述第一吸板和所述第三吸板均与所述第二吸板平行，且所述第一吸板、第二吸板及第三吸板处于同一水平面上；当所述吸膜组件处于所述第二状态时，所述第一吸板和所述第三吸板远离所述第二吸板的一端均朝向所述承载机构转动至与所述第二吸板垂直。
在其中一个实施例中，所述承载机构包括承载架、定位底座及两个夹持组件；所述定位底座设置在所述承载架上，用于承载所述产品；两个所述夹持组件均设置在所述承载架 上，且分别位于所述定位底座在与所述第一水平方向垂直的第二水平方向上的两侧；两个所述夹持组件被构造为可受控地彼此靠近或远离，以夹紧或松开所述产品。
在其中一个实施例中，所述吸膜组件还包括升降座及第一旋转驱动件，所述升降座连接在所述驱动组件的驱动端，所述安装座绕第一旋转轴线可转动地连接在所述升降座上，所述第一旋转驱动件设置在所述升降座上，并与所述安装座驱动连接；其中，所述第一旋转轴线与竖直方向平行。
在其中一个实施例中，所述吸膜组件还包括第一转轴及第二旋转驱动件，所述第一转轴可转动地连接在所述安装座上，所述第二旋转驱动件设置在所述安装座上，且与所述第一转轴驱动连接；所述第一吸板靠近所述第二吸板的一端连接在所述第一转轴上，且所述第一转轴的轴向与第二水平方向平行，且所述第二水平方向与所述第一水平方向垂直。
在其中一个实施例中，所述吸膜组件还包括第二转轴及第三旋转驱动件，所述第二转轴可转动地连接在所述安装座上，所述第三旋转驱动件设置在所述安装座上，且与所述第二转轴驱动连接；所述第三吸板靠近所述第二吸板的一端连接在所述第二转轴上，且所述第二转轴的轴向与第二水平方向平行，且所述第二水平方向与所述第一水平方向垂直。
在其中一个实施例中，每一所述抚平组件包括固定座及移动座，所述移动座设置在所述固定座上，所述柔性抚平片安装在所述移动座上；其中，所述移动座可受控地相对所述固定架沿预设方向移动，以带动所述柔性抚平片插入或退出所述产品的侧面和上端面的连接处。
在其中一个实施例中，所述预设方向与所述第一水平方向和竖直方向均相交。
在其中一个实施例中，所述包膜装置还包括焊接机构，所述焊接机构包括分别布置在所述承载机构在所述第一水平方向上的两侧的两个焊接组件，每一所述焊接组件用于将膜材焊接至所述产品的侧面。
在其中一个实施例中，每一所述焊接组件包括固定架、底板及焊接头，所述底板设置在所述固定架上，且可受控地沿所述第一水平方向相对所述固定架移动，所述焊接头安装在所述底板上。
在其中一个实施例中，每一所述焊接组件包括三个所述焊接头，所述三个焊接头分别为沿与所述第一水平方向垂直的第二水平方向间隔布设的第一焊接头、第二焊接头及第三焊接头；其中，所述第一焊接头和所述第三焊接头相对所述底板在所述第二水平方向上的位置均可调节。
有益效果
上述包膜装置，在实际包膜作业时，待包膜的电芯定位在承载机构上。驱动组件驱动安装座下降，直至安装座带动第二吸板下降至与承载机构上的电芯的上端面抵接，从而将被第二吸板吸附的膜材贴合至电芯的上端面上。然后，控制第一吸板和第二吸板分别朝向电芯在第一水平方向上的两侧转动，转动一定角度后停止(例如30°)。此时，控制两个抚平组件的柔性抚平片分别插入至电芯在第一水平方向上的侧面与电芯的上端面的连接处，并对电芯表面和膜材进行抚平，防止电芯表面和膜材产生褶皱。抚平完成后，控制两个抚平组件的柔性抚平片退回至初始位置。再然后，控制第一吸板和第二吸板继续分别朝向电芯在第一水平方向上的两侧转动，直至分别与电芯在第一水平方向上的两侧面抵接，使得吸附在第一吸板和第二吸板上的膜材贴合至电芯在第一水平方向上的两侧面。最后，第一吸板、第二吸板及第三吸板解除对膜材的吸附，且第一吸板和第二吸板反向转动至初始位置(此时，膜材与第一吸板和第三吸板分离，并保持贴敷在电芯的侧面上)，驱动组件驱动安装座上升，并带动第一吸板、第二吸板及第三吸板上升(此时，膜材与第二吸板分离，并保持贴敷在电芯的上端面上)。如此，本实用新型的包膜装置，在电芯的上端面贴敷膜材之后，利用抚平机构的两个抚平组件对电芯的侧面和上端面的连接处(即膜材与电芯的上端面的交接处)进行抚平，进行抚平之后再利用第一吸板和第三吸板对电芯的两个侧面进行包膜，从而避免了电芯的上端面产生褶皱，有利于确保电芯质量和包膜精度。
附图说明
图1为本实用新型一实施例中包膜装置的结构示意图；
图2为图1所示的包膜装置的承载机构的主视图；
图3为图2所示的承载机构的侧视图；
图4为图1所示的包膜装置的包膜机构的主视图；
图5为图4所示的包膜机构的侧视图；
图6为图1所示的包膜装置的抚平机构的主视图；
图7为图6所示的抚平机构的抚平组件的侧视图；
图8为图1所示的焊接机构的焊接组件的主视图；
图9为图8所示的焊接组件的侧视图；
图10为图8所示的焊接组件的俯视图。
本实用新型的实施方式
为使本实用新型的上述目的、特征和优点能够更加明显易懂，下面结合附图对本实用新型的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解 本实用新型。但是本实用新型能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本实用新型内涵的情况下做类似改进，因此本实用新型不受下面公开的具体实施例的限制。
在本实用新型的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本实用新型的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本实用新型中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
在本实用新型中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
请参阅图1，本实用新型一实施例提供了一种包膜装置，用于对待包膜的产品进行包膜。 该产品可以是电芯A，当然也可以是其他需要包膜的产品，在此不作限定。为便于描述，本文以电芯A为例进行说明。
该包膜装置包括承载机构10、包膜机构20及抚平机构(图未标)。该承载机构10用于承载电芯A。包膜机构20包括驱动组件21及吸膜组件22。该吸膜组件22包括安装座224、第一吸板221、第二吸板222及第三吸板223。该安装座224安装在驱动组件21的驱动端，且位于承载机构10的上方。驱动组件21用于驱动该安装座224作升降运动。第一吸板221、第二吸板222及第三吸板223沿第一水平方向X依次设置在安装座224朝向承载机构10的一侧，且用于共同吸附膜材。抚平机构包括分别设置在承载机构10在第一水平方向X上的两侧的两个抚平组件31。每一抚平组件31包括柔性抚平片313，且每一抚平组件31的柔性抚平片313被构造为可受控地插入至电芯A的侧面a2与上端面a1的连接处进行抚平，从而防止电芯A的上端面a1受压产生褶皱。
其中，在驱动组件21的驱动下安装座224下降的过程中，能够带动第二吸板222与电芯A的上端面a1抵接。当第二吸板222与电芯A的上端面a1抵接时，第一吸板221和第三吸板223能够相对安装座224转动至分别与电芯A在第一水平方向X上的侧面a2相抵接。
上述包膜装置，在实际包膜作业时，待包膜的电芯A定位在承载机构10上。驱动组件21驱动安装座224下降，直至安装座224带动第二吸板222下降至与承载机构10上的电芯A的上端面a1抵接，从而将被第二吸板222吸附的膜材贴合至电芯A的上端面a1上。然后，控制第一吸板221和第二吸板222分别朝向电芯A在第一水平方向X上的两侧转动，转动一定角度后停止(例如30°)。此时，控制两个抚平组件31的柔性抚平片313分别插入至电芯A在第一水平方向X上的侧面a2与电芯A的上端面a1的连接处，并对电芯A表面和膜材进行抚平，防止电芯A表面和膜材产生褶皱。抚平完成后，控制两个抚平组件31的柔性抚平片313退回至初始位置。再然后，控制第一吸板221和第二吸板222继续分别朝向电芯A在第一水平方向X上的两侧转动，直至分别与电芯A在第一水平方向X上的两侧面a2抵接，使得吸附在第一吸板221和第二吸板222上的膜材贴合至电芯A在第一水平方向X上的两侧面a2。最后，第一吸板221、第二吸板222及第三吸板223解除对膜材的吸附，且第一吸板221和第二吸板222反向转动至初始位置(此时，膜材与第一吸板221和第三吸板223分离，并保持贴敷在电芯A的侧面a2上)，驱动组件21驱动安装座224上升，并带动第一吸板221、第二吸板222及第三吸板223上升(此时，膜材与第二吸板222分离，并保持贴敷在电芯A的上端面a1上)。
如此，本实用新型的包膜装置，在电芯A的上端面a1贴敷膜材之后，利用抚平机构的两个抚平组件31对电芯A的侧面a2和上端面a1的连接处(即膜材与电芯A的上端面a1的交接 处)进行抚平，进行抚平之后再利用第一吸板221和第三吸板223对电芯A的两个侧面a2进行包膜，从而避免了电芯A的上端面a1产生褶皱，有利于确保电芯A质量和包膜精度。可选地，膜材可以是绝缘膜，例如Mylar膜。
需要说明的是，由于电芯A需要包膜的面是电芯A的底面和两个侧面a2，因此可将电芯A倒置于承载机构10上，使得电芯A的底面朝上，也就是说电芯A的底面即为上述电芯A的上端面a1。如此，利用第二吸板222对电芯A的底面(即上端面a1)进行包膜，利用第一吸板221和第二吸板222对电芯A的两个侧面a2(即在第一水平方向X上的两个侧面a2)进行包膜。
具体到实施例中，吸膜组件22具有第一状态和第二状态。当吸膜组件22处于第一状态时，第一吸板221和第三吸板223均与第二吸板222平行，且第一吸板221、第二吸板222和第三吸板223三者处于同一水平面上，以便于三者共同吸取膜材。当吸膜组件22处于第二状态时，第一吸板221和第三吸板223远离第二吸板222的一端均朝向承载机构10转动至与第二吸板222垂直，使得第一吸板221和第三吸板223能够转动至与电芯A的两个侧面a2相抵接。
如此，在实际进行包膜作业时，首先吸膜组件22处于第一状态，以便于第一吸板221、第二吸板222及第三吸板223三者共同吸取膜材。然后，在驱动组件21的驱动作用下，第一吸板221、第二吸板222及第三吸板223三者跟随安装座224一同下降，直至第二吸板222与电芯A的上端面a1抵接。再然后，控制第一吸板221和第三吸板223的远离第二吸板222的一端朝向承载机构10转动一定的角度(例如30°)。再然后，控制两个柔性抚平片313插入至电芯A的侧面a2与上端面a1的连接处，对电芯A表面进行抚平。抚平后再控制两个柔性抚平片313退回至初始位置。再然后，控制第一吸板221和第三吸板223继续转动，直至吸膜组件22处于第二状态，此时第一吸板221和第三吸板223与电芯A在第一水平方向X上的两侧面a2抵接。再然后，第一吸板221、第二吸板222和第三吸板223解除对膜材的吸附，使得膜材贴敷在电芯A的上端面a1和两个侧面a2上。并且，控制第一吸板221和第二吸板222反向转动，直至吸膜组件22处于第一状态。最后，在驱动组件21的驱动下，第一吸板221、第二吸板222及第三吸板223跟随安装座224一同上升至初始位置，以便于再次吸取膜材，为下一次的包膜作业做好准备。
请参见图2及图3所示，本实用新型的实施例中，承载机构10包括承载架11、定位底座14及两个夹持组件12。定位底座14设置在承载架11上，用于承载电芯A。两个夹持组件12均设置在承载架11上，且分别位于定位底座14在与第一水平方向X垂直的第二水平方向Y上的两侧。两个夹持组件12被构造为可受控地彼此靠近或远离，以夹紧或松开定位底座14上 的电芯A。如此，在进行包膜时利用定位底座14对电芯A进行定位和支撑，并利用两个夹持组件12将电芯A由第二水平方向Y上夹紧固定，防止在包膜时电芯A晃动或移动。
具体到实施例中，每一夹持组件12包括移动板121及夹持块122，该移动板121沿第二水平方向Y可移动地连接在承载架11上，夹持块122设置在该移动板121上。可选地，移动板121可通过滑轨和滑块的导向结构连接在承载架11上，从而利用滑轨和滑块对移动板121相对承载架11的移动进行导向。
承载机构10还包括设置在承载架11上的夹紧驱动组件13，该夹紧驱动组件13与两个移动板121驱动连接，以驱动两个移动板121带动两个夹持块122沿第二水平方向Y彼此靠近或远离，从而夹紧或松开电芯A。
具体到实施例中，夹持块122相对移动板121在竖直方向上可浮动，从而在包膜过程中第二吸板222下降至与电芯A的上端面a1相抵时，夹持块122能够跟随电芯A一同向下浮动，从而避免夹持块122与电芯A之间产生相对移动而划伤电芯A。
进一步地，两个夹持块122彼此朝向的侧面均设置有柔性层123，即夹持块122通过其上的柔性层123与电芯A接触，从而避免夹伤电芯A。
具体到实施例中，夹紧驱动组件13包括两个滚轮132、凸轮板131、第一弹性件133和第二弹性件134。两个滚轮132分别安装在两个移动板121上，凸轮板131可转动地连接在承载架11上，并与两个滚轮132传动配合。凸轮板131相对承载架11转动的过程中具有第一位置和第二位置。当凸轮板131转动至第一位置时，凸轮板131通过两个滚轮132带动两个移动板121彼此靠近，从而带动两个移动板121上的夹持块122夹紧电芯A。当凸轮板131转动至第二位置时，凸轮板131通过两个滚轮132带动两个移动板121彼此远离，从而带动两个移动板121上的夹持块122松开电芯A。
第一弹性件133的相对两端分别与两个移动板121连接，以提供使得两个移动板121具有彼此靠近的移动趋势的弹力。第二弹性件134的相对两端分别与凸轮板131和承载架11连接，以提供使得凸轮板131由第二位置向第一位置的转动趋势的弹力。如此，凸轮板131能够在外力的作用下，克服第二弹性件134的弹力由第一位置转动至第二位置，使得两个移动板121克服第一弹性件133提供的弹力而带动两个夹持块122张开，以松开电芯A或方便向定位底座14上放置电芯A。当外力消失时，在第二弹性件134的作用下，凸轮板131自动由第二位置转动至第一位置，且两个移动板121在第一弹性件133的作用下彼此靠近而夹紧电芯A。可选地，第一弹性件133可以是弹簧。第二弹性件134可以是氮气弹簧。
进一步地，包膜装置还包括输送线(图未示)，承载机构10设置在该输送线上，以由输 送线输送，并途径上料工位、包膜工位和下料工位。如此，在实际包膜作业时，首先，输送线将承载机构10输送至上料工位，此时凸轮板131受到外力作用而由第一位置转动至第二位置，使得两个夹持块122张开，以便于将待包膜的电芯A倒置在定位底座14上。然后，输送线将该承载机构10输送至包膜工位，此时承载机构10位于第二吸板222的下方。并且，当承载机构10离开上料位置，外力消失，使得凸轮板131由第二位置转动至第一位置，从而带动两个夹持块122夹紧电芯A。再然后，利用包膜机构20对该电芯A进行包膜。包膜完成后，输送线输送承载机构10移动至下料工位，此时，凸轮板131受到外力作用而由第一位置转动至第二位置，使得两个夹持块122张开，以便于将包膜后的电芯A取走。
需要说明的是，可通过在上料工位和下料工位设置施力件，使得当承载机构10移动至上料工位或下料工位时，该施力件与凸轮板131配接，从而驱使凸轮板131由第一位置转动至第二位置。当承载机构10离开上料工位或下料工位时，该施力件与凸轮板131分离，从而使得凸轮板131在第二弹性件134的作用下自动由第二位置转动至第一位置。当然，在其他实施例中，也可由操作人员自行对凸轮板131施加外力，实现两个夹持块122的夹紧和张开，在此不作限定。
请参见图4及图5所示，本实用新型的实施例中，吸膜组件22还包括升降座225及第一旋转驱动件228，升降座225连接在驱动组件21的驱动端，安装座224绕第一旋转轴线可转动地连接在升降座225上。第一旋转驱动件228设置在升降座225上，并与安装座224驱动连接，以驱动安装座224绕第一旋转轴线转动。其中，第一旋转轴线与竖直方向平行。
如此，可通过第一旋转驱动件228驱动安装座224转动，从而调整第二吸板222的方位，使得第二吸板222与电芯A的上端面a1相匹配，以便于准确的对电芯A进行包膜，提高包膜质量。当需要进行包膜时，第一旋转驱动件228驱动安装座224转动直至第二吸板222与电芯A的上端面a1相匹配。然后，驱动组件21驱动升降座225下降，从而带动安装座224及安装座224上的第一吸板221、第二吸板222和第三吸板223下降，直至第二吸板222与电芯A的上端面a1相抵接。当包膜完成时，驱动组件21驱动升降座225上升，从而带动安装座224及安装座224上的第一吸板221、第二吸板222和第三吸板223上升。可选地，第一旋转驱动件228可以是伺服电机。
具体到实施例中，吸膜组件22还包括第一转轴及第二旋转驱动件226，第一转轴可转动地连接在安装座224，第一吸板221靠近第二吸板222的一端连接在第一转轴上，以随第一转轴转动。第二旋转驱动件226安装在安装座224上，且与第一转轴传动连接，以驱动该第一转轴转动。其中，第一转轴的轴向与第二水平方向Y平行。如此，可通过第二旋转驱动件 226驱动第一转轴转动，从而带动第一吸板221相对第二吸板222转动。可选地，第二旋转驱动件226可以是伺服电机。第二旋转驱动件226可通过带传动结构与第一转轴传动连接。
具体到实施例中，吸膜组件22还包括第二转轴及第三旋转驱动件227，第二转轴可转动地连接在安装座224，第三吸板223靠近第二吸板222的一端连接在第二转轴上，以随第二转轴转动。第三旋转驱动件227安装在安装座224上，且与第二转轴传动连接，以驱动该第二转轴转动。其中，第二转轴的轴向与第二水平方向Y平行。如此，可通过第三旋转驱动件227驱动第二转轴转动，从而带动第三吸板223相对第二吸板222转动。可选地，第三旋转驱动件227可以是伺服电机。第三旋转驱动件227可通过带传动结构与第二转轴传动连接。
具体到实施例中，驱动组件21包括支撑板211、连接座212、第一升降驱动件213及第二升降驱动件214。连接座212可升降地连接在支撑板211上，第一升降驱动件213设置在该支撑板211上，并与连接座212驱动连接，以驱动该连接座212相对支撑板211上升或下降。升降座225可升降地连接在连接座212上，第二升降驱动件214设置在该连接座212上，并与升降座225驱动连接，以驱动升降座225相对连接座212上升或下降。如此，第一升降驱动件213可通过驱动连接座212上升或下降，从而带动升降座225一同上升或下降，进而实现带动第一吸板221、第二吸板222及第三吸板223的上升或下降。可并且，第二升降驱动件214通过驱动升降座225相对连接座212上升或下降，从而实现带动第一吸板221、第二吸板222及第三吸板223的上升或下降。
在实际使用时，可通过第一升降驱动件213实现第一吸板221、第二吸板222及第三吸板223的快速且长距离的上升或下降，并通过第二升降驱动件214实现第一吸板221、第二吸板222及第三吸板223的缓慢且短距离的上升或下降。具体地，在需要进行包膜时，首先第一升降驱动件213启动，从而带动第一吸板221、第二吸板222及第三吸板223快速的下降，直至第二吸板222与电芯A的上端面a1间隔一较小的间距(可根据具体情况进行设定，在此不作限定)时停止。然后，第二升降驱动件214启动，从而带动第一吸板221、第二吸板222及第三吸板223缓慢的下降，直至第二吸板222与电芯A的上端面a1接触时停止。如此，设置两级升降驱动，一方面有利于提高包膜效率；另一方面有利于避免第二吸板222对电芯A造成较大的冲击而损坏电芯A。
具体到实施例中，连接座212与升降座225之间设置有压力传感器215，从而可利用该压力传感器215检测第二吸板222下降时对电芯A施加的压力，以防止对电芯A的压力过大而损坏电芯A。
具体到实施例中，连接座212与支撑板211之间可通过设置滑轨和滑块结构对连接座212 的升降进行导向。升降座225与连接座212之间也可通过设置滑轨和滑块结构对升降座225的升降进行导向。
可选地，第一升降驱动件213可以是伺服电机，该第一升降驱动件213与连接座212之间可通过丝杠副或带传动等结构传动连接。第二升降驱动件214可以采用电缸。
请参见图1、图6及图7所示，本实用新型的实施例中，抚平组件31包括固定座311及移动座312。该移动座312设置在固定座311上，柔性抚平片313安装在移动座312上。其中，移动座312可受控地相对固定座311沿预设方向U移动，以带动柔性抚平片313插入或退出电芯A的侧面a2和上端面a1的连接处，进而利用该柔性抚平片313对电芯A进行抚平，避免电芯A表面产生褶皱。
如此，当需要进行抚平时，控制该移动座312相对固定座311沿预设方向U朝向电芯A移动，直至移动座312上的柔性抚平片313插入至电芯A的侧面a2和上端面a1的连接处，从而实现对电芯A的抚平，避免电芯A产生褶皱。当抚平完成后，控制该移动座312相对固定座311反向移动至初始位置，使得移动座312上的柔性抚平片313退回而远离电芯A。
具体到实施例中，上述预设方向U与第一水平方向X和竖直方向均相交。可选地，预设方向U与第一水平方向X和竖直方向均呈45°。
具体到实施例中，抚平组件31还包括抚平驱动件314，该抚平驱动件314安装在固定座311上，并与移动座312驱动连接，以驱动该移动座312相对固定座311沿预设方向U移动。可选地，抚平驱动件314可以是气缸。
具体到实施例中，抚平组件31还包括导向轴315，导向轴315的一端与移动座312固定连接，另一端与固定座311滑动配合，使得移动座312在导向轴315的导向作用下移动，从而带动柔性抚平片313准确地移动至对电芯的抚平位置，确保实现对电芯A的抚平。可以理解的是，该导向轴315的轴向即为上述预设方向U。
请参见图1、图8至图10所示，本实用新型的实施例中，包膜装置还包括焊接机构(图未示)，该焊接机构包括分别布置在承载机构10在第一水平方向X上的两侧的两个焊接组件41。每一焊接组件41用于将膜材焊接至电芯A的侧面a2。如此，当第二吸板222与电芯A的上端面a1抵接，且第一吸板221和第三吸板223转动至与电芯A在第一水平方向X上的两个侧面a2抵接时，与第一吸板221同侧的焊接组件41将第一吸板221上的膜材与电芯A的侧面a2焊接，与第三吸板223同侧的焊接组件41将第三吸板223上的膜材与电芯A的侧面a2焊接。焊接完成后，第一吸板221、第二吸板222及第三吸板223均解除对膜材的吸附，且第一吸板221和第三吸板223转动至上述第一状态，驱动组件21驱动第一吸板221、第二吸板222及第三吸 板223上升，此时膜材保持包覆在电芯A的上端面a1和两个侧面a2上。
需要说明的是，本实用新型的包膜装置能够完成包膜和焊接两道工序，即将包膜和焊接整合为一体，设备结构紧凑，节省空间，操作便捷，包膜精度高，大大提高了生产效率。
具体到实施例中，每一焊接组件41包括固定架410、底板411及焊接头。该底板411设置在固定架410上，且可受控地沿第一水平方向X相对固定架410移动。焊接头安装在该底板411上，以跟随底板411一同沿第一水平方向X移动，进而实现靠近或远离电芯A的侧面a2。如此，当需要进行焊接时，控制底板411带动焊接头沿第一水平方向X靠近电芯A移动，直至焊接头与膜材接触，并将膜材焊接至电芯A的侧面a2。当焊接完成后，控制底板411带动焊接头沿第一水平方向X远离电芯A移动而回复到初始位置，以避免焊接头对第一吸板221或第二吸板222的转动造成干涉。
具体到实施例中，每一焊接组件41还包括焊接驱动件412，该焊接驱动件412安装在固定架410上，并与底板411驱动连接，以驱动底板411沿第一水平方向X移动。可选地，焊接驱动件412可以是气缸。
具体到实施例中，底板411与固定架410之间可通过设置滑轨和滑块导向结构来对底板411沿第一水平方向X的移动进行导向。
具体到实施例中，每一焊接组件41包括三个焊接头，该三个焊接头分别为沿第二水平方向Y间隔布设的第一焊接头413a、第二焊接头413b及第三焊接头413c。其中，第一焊接头413a和第三焊接头413c相对底板411在第二水平方向Y上的位置均可调节。第二焊接头413b与底板411固定连接。如此，通过三个焊接头对电芯A的对应侧面a2上的三个焊点a3(见图2)进行焊接。并且，可通过调节第一焊接头413a和第三焊接头413c沿第二水平方向Y上的位置，达到调节各个焊接头之间的间距的目的，有利于适用各种规格的电芯A，提升设备的兼容性。
进一步地，底板411上开设有沿第二水平方向Y纵长延伸的第一滑槽4112，第一焊接头413a设置在该第一滑槽4112上。每一焊接组件41还包括第一锁紧件(图未示)，该第一锁紧件可锁紧或松开第一焊接头413a与底板411。如此，当需要调节第一焊接头413a的位置时，操作第一锁紧件以松开第一焊接头413a与底板411，使得第一焊接头413a沿第一滑槽4112可移动，从而调节第一焊接头413a在第二水平方向Y上的位置。当第一焊接头413a的位置调节到位后，操作第一锁紧件以锁紧第一焊接头413a与底板411，从而防止第一焊接头413a继续移动。可选地，第一锁紧件可以是紧固螺钉。
进一步地，底板411上开设有沿第二水平方向Y纵长延伸的第二滑槽4114，第三焊接头 413c设置在该第二滑槽4114上。每一焊接组件41还包括第二锁紧件，该第二锁紧件可锁紧或松开第三焊接头413c与底板411。如此，当需要调节第三焊接头413c的位置时，操作第二锁紧件以松开第三焊接头413c与底板411，使得第三焊接头413c沿第二滑槽4114可移动，从而调节第三焊接头413c在第二水平方向Y上的位置。当第三焊接头413c的位置调节到位后，操作第二锁紧件以锁紧第三焊接头413c与底板411，从而防止第三焊接头413c继续移动。可选地，第二锁紧件可以是紧固螺钉。
请继续参见图1、图6及图7所示，具体到实施例中，固定座311通过调节板316连接在固定架410上，且固定座311相对调节板316在竖直方向上的位置可调节，从而确保柔性抚平片313能够准确的插入至电芯A需要被抚平的位置。需要说明的是，固定座311可采用腰型孔与紧固螺钉的方式实现在竖直方向上的位置的调节，当然也可采用其他的方式，在此不作限定。
当然，并不仅限于采用调节固定座311相对调节板316在竖直方向上的位置来调节柔性抚平片313的插入位置。在其他实施例中，也可通过控制固定座311相对调节板316转动的方式实现柔性抚平片313的插入位置的调节。具体地，固定座311绕与第二水平方向Y平行的轴线可转动地连接在调节板316上(例如固定座311通过转轴安装在调节板316上)，且通过紧固螺钉锁紧固定在调节板316上。当需要调节柔性抚平片313的插入位置时，拧松紧固螺钉，并控制固定座311相对调节板316转动。当固定座311转动到位后，通过紧固螺钉将固定座311和调节板316锁紧，以防止固定座311继续转动。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本实用新型的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进，这些都属于本实用新型的保护范围。因此，本实用新型专利的保护范围应以所附权利要求为准。

Claims (11)

  1. 一种包膜装置，其特征在于，包括：
    承载机构，用于承载待包膜的产品；
    包膜机构，包括驱动组件及吸膜组件，所述吸膜组件包括安装座、第一吸板、第二吸板及第三吸板；所述安装座安装在所述驱动组件的驱动端，且位于所述承载机构的上方；所述第一吸板、第二吸板及第三吸板沿第一水平方向依次设置在所述安装座朝向所述承载机构的一侧，且用于共同吸附膜材；及
    抚平机构，包括分别设置在所述承载机构在所述第一水平方向上的两侧的两个抚平组件，每一所述抚平组件包括柔性抚平片，且每一所述抚平组件的所述柔性抚平片被构造为可受控地插入至所述产品的侧面与上端面的连接处并进行抚平；
    其中，所述驱动组件用于驱动所述安装座升降，所述安装座下降的过程中能够带动所述第二吸板与所述产品的上端面抵接；当所述第二吸板与所述产品的上端面抵接时，所述第一吸板和所述第三吸板能够相对所述安装座转动至分别与所述产品在所述第一水平方向上的侧面相抵接。
  2. 根据权利要求1所述的包膜装置，其特征在于，所述吸膜组件具有第一状态和第二状态；
    当所述吸膜组件处于所述第一状态时，所述第一吸板和所述第三吸板均与所述第二吸板平行，且所述第一吸板、第二吸板及第三吸板处于同一水平面上；
    当所述吸膜组件处于所述第二状态时，所述第一吸板和所述第三吸板远离所述第二吸板的一端均朝向所述承载机构转动至与所述第二吸板垂直。
  3. 根据权利要求1-2任一项所述的包膜装置，其特征在于，所述承载机构包括承载架、定位底座及两个夹持组件；
    所述定位底座设置在所述承载架上，用于承载所述产品；两个所述夹持组件均设置在所述承载架上，且分别位于所述定位底座在与所述第一水平方向垂直的第二水平方向上的两侧；两个所述夹持组件被构造为可受控地彼此靠近或远离，以夹紧或松开所述产品。
  4. 根据权利要求1-2任一项所述的包膜装置，其特征在于，所述吸膜组件还包括升降座及第一旋转驱动件，所述升降座连接在所述驱动组件的驱动端，所述安装座绕第一旋转轴线可转动地连接在所述升降座上，所述第一旋转驱动件设置在所述升降座上，并与所述安装座驱动连接；
    其中，所述第一旋转轴线与竖直方向平行。
  5. 根据权利要求1、2和4任一项所述的包膜装置，其特征在于，所述吸膜组件还包括第一转轴及第二旋转驱动件，所述第一转轴可转动地连接在所述安装座上，所述第二旋转驱动件设置在所述安装座上，且与所述第一转轴驱动连接；
    所述第一吸板靠近所述第二吸板的一端连接在所述第一转轴上，且所述第一转轴的轴向与第二水平方向平行，且所述第二水平方向与所述第一水平方向垂直。
  6. 根据权利要求1、2、4和5任一项所述的包膜装置，其特征在于，所述吸膜组件还包括第二转轴及第三旋转驱动件，所述第二转轴可转动地连接在所述安装座上，所述第三旋转驱动件设置在所述安装座上，且与所述第二转轴驱动连接；
    所述第三吸板靠近所述第二吸板的一端连接在所述第二转轴上，且所述第二转轴的轴向与第二水平方向平行，且所述第二水平方向与所述第一水平方向垂直。
  7. 根据权利要求1所述的包膜装置，其特征在于，每一所述抚平组件包括固定座及移动座，所述移动座设置在所述固定座上，所述柔性抚平片安装在所述移动座上；
    其中，所述移动座可受控地相对所述固定座沿预设方向移动，以带动所述柔性抚平片插入或退出所述产品的侧面和上端面的连接处。
  8. 根据权利要求1和7任一项所述的包膜装置，其特征在于，所述预设方向与所述第一水平方向和竖直方向均相交。
  9. 根据权利要求1-3任一项所述的包膜装置，其特征在于，所述包膜装置还包括焊接机构，所述焊接机构包括分别布置在所述承载机构在所述第一水平方向上的两侧的两个焊接组件，每一所述焊接组件用于将膜材焊接至所述产品的侧面。
  10. 根据权利要求1和9任一项所述的包膜装置，其特征在于，每一所述焊接组件包括固定架、底板及焊接头，所述底板设置在所述固定架上，且可受控地沿所述第一水平方向相对所述固定架移动，所述焊接头安装在所述底板上。
  11. 根据权利要求1、9和10任一项所述的包膜装置，其特征在于，每一所述焊接组件包括三个所述焊接头，所述三个焊接头分别为沿与所述第一水平方向垂直的第二水平方向间隔布设的第一焊接头、第二焊接头及第三焊接头；
    其中，所述第一焊接头和所述第三焊接头相对所述底板在所述第二水平方向上的位置均可调节。
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