CN112382781B - Anchor clamps are transported to electricity core - Google Patents

Anchor clamps are transported to electricity core Download PDF

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Publication number
CN112382781B
CN112382781B CN202010872140.3A CN202010872140A CN112382781B CN 112382781 B CN112382781 B CN 112382781B CN 202010872140 A CN202010872140 A CN 202010872140A CN 112382781 B CN112382781 B CN 112382781B
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China
Prior art keywords
frame
lug
cover plate
cell
battery cell
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CN202010872140.3A
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Chinese (zh)
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CN112382781A (en
Inventor
张道振
韩笑
朱永刚
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Wanxiang A123 Systems Asia Co Ltd
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Wanxiang A123 Systems Asia Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • H01M10/0404Machines for assembling batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a cell transferring clamp which comprises a base and a cover plate, wherein the base comprises a bottom plate, a frame and an insulating panel, the frame is rectangular with a large length-width ratio, the insulating panel is arranged on the frame, a positioning lug, a lug limiting lug and a guide post are arranged on the insulating panel, the positioning lug and the lug limiting lug jointly form a cell limiting groove, a positioning hole matched with the guide post is arranged at a corresponding position on the cover plate, the frame and the cover plate are locked through a locking mechanism, a cell is positioned between the cover plate and the frame after installation, and the lug is exposed out of the cell transferring clamp. The invention solves the problem that the battery cell with large length-width ratio is easy to bend and deform in the length direction in the transferring process, the clamping force of the clamp is constant, and the deviation and the volume expansion deformation of the battery cell pole piece in the transferring process are prevented; the procedures of resistance testing, tab pre-welding, tab cutting, main welding and the like after the battery core is discharged do not need to disassemble the clamp for many times, and the production efficiency is improved.

Description

Anchor clamps are transported to electricity core
Technical Field
The invention relates to the technical field of a battery cell transferring clamp.
Background
The lithium ion power battery is the most widely applied energy carrier on the electric automobile at present, along with the continuous mileage and safety requirements of the electric automobile are continuously improved, the battery monomer is continuously developed towards the directions of high capacity and high energy density, the design of large length-width ratio can not only reduce the problems of cycle performance, thermal management, safety and the like of the high capacity and high energy density battery, the module structure is reduced, the connection wire harness of the battery monomer and the related process cost are greatly reduced, the grouping efficiency (energy density) is greatly improved, the obvious effect is also achieved, and the wide application of the high capacity battery with large length-width ratio on the electric automobile becomes a trend. However, in the procedures of resistance testing, pre-welding of the tabs, cutting of the tabs and main welding of the battery cell of the battery with the large length-width ratio after lamination forming, the mechanical property of the battery cell of the battery with the large length-width ratio in the length direction of the battery cell is attributed in the transportation process, the battery cell is easy to bend and deform, the assembly efficiency is influenced, and the quality of the battery after the manufacturing process is also influenced; the electric core can not keep a invariable packing force in the transportation process, and the conditions such as electric core thickness change, unable compression and electric core shift can appear in the transportation process.
For example, a "battery cell transfer jig" disclosed in chinese patent document, whose publication No. CN203300739U includes a tray having a battery cell accommodating groove, a positioning protrusion is provided on one of a top surface and a bottom surface of the tray, and a positioning groove for embedding the positioning protrusion on the adjacent stacked tray is provided on the other one of the top surface and the bottom surface of the tray, the positioning protrusion has a longitudinal positioning surface facing away from each other in a transverse direction of the tray and a transverse positioning surface facing away from each other in a longitudinal direction of the tray, and the positioning groove has a longitudinal groove wall surface and a transverse groove wall surface for respectively blocking and matching with the corresponding longitudinal positioning surface and transverse positioning surface of the positioning protrusion on the adjacent stacked tray. Can realize transporting in the time of multilayer electricity core, still need many times at anchor clamps material loading and ejection of compact in order to carry out follow-up resistance test, utmost point ear prewelding, utmost point ear cut, main welding process, cause electric core bending deformation easily at last unloading in-process, influence the geometric accuracy of electric core and the uniformity of assembling back battery, influence work efficiency simultaneously.
Disclosure of Invention
The invention provides a cell transferring clamp in the manufacturing process of a laminated lithium ion power battery with a large length-width ratio, which aims to solve the problems that in the transferring process of the following procedures of resistance testing, pre-welding of a tab, cutting of the tab, main welding and the like in the prior art, the feeding and discharging of the clamp are required for multiple times, the geometric precision of the cell and the consistency of the assembled battery are influenced, and the working efficiency is influenced.
The invention provides a cell transferring clamp in the manufacturing process of a laminated lithium ion power battery with a large length-width ratio, which aims to overcome the problem that the pressing force of the prior art on a cell cannot be kept constant.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cell transferring clamp is suitable for transferring cells in the manufacturing process of a laminated lithium battery with a large length-width ratio and comprises a base and a cover plate, wherein the base comprises a bottom plate, a frame and a plurality of insulating panels, the frame is fixedly arranged on the bottom plate and is rectangular with a large length-width ratio, the insulating panels are arranged on the frame, a gap is reserved between each insulating panel and the corresponding insulating panel, grooves are arranged at positions of the side edges of the frame corresponding to the gap, the gaps and the grooves jointly form a clamping groove for clamping the cells by a manipulator, positioning lugs, lug limiting lugs and guide posts are arranged on parts of the insulating panels, which are positioned at the two long side edges of the frame, the positioning lugs, the lug limiting lugs and the guide posts are fixedly connected with the frame, the positioning lugs and the lug limiting lugs jointly form cell limiting grooves, and positioning holes matched with the guide posts are arranged at corresponding positions on the cover plate, the frame and the cover plate are locked through a locking mechanism, the battery cell is located between the cover plate and the frame after installation is completed, and the lug is exposed outside the battery cell transferring clamp.
The insulating plate is laid on the frame and used for bearing the battery cell, the battery cell is isolated from the frame by the insulating plate, the battery cell is lifted and insulated, a gap is reserved between the insulating plate and the insulating plate, the frame is provided with a groove, the groove and the gap form a clamping groove together, a manipulator is convenient to clamp the battery cell to take and place the battery cell, and a plurality of insulating panels are arranged, so that a plurality of clamping grooves are formed, for the battery cell with a large length-width ratio, the more clamping points are, the larger the contact area with the battery cell is, and the battery cell is difficult to deform in the clamping process; the battery cell limiting groove formed by the positioning lug and the lug limiting lug plays a role in fixing the battery cell and preventing the battery cell from moving in the horizontal direction, and the lug limiting lug plays a role in limiting the lug at the same time, so that the relative position of the lug and the battery cell is ensured to be accurate and fixed; the guide columns are fixed on the frame, so that the requirement on precision is lowered; the battery cell is clamped through locking of the cover plate and the frame, so that the battery cell cannot move vertically in the transferring process; the lug is exposed outside the transfer fixture, and subsequent resistance testing, lug pre-welding, lug cutting and main welding processes can be directly carried out, so that the fixture is prevented from being disassembled and assembled for many times, the deformation of the battery cell caused in the process of feeding and discharging for many times is avoided, and the production efficiency and the production quality are improved.
Preferably, locking mechanism is including setting up the magnet adsorbate on the apron, setting up the electro-magnet on the frame, setting up pressure sensor on the insulation board and setting up the control box on the bottom plate, the control box includes power and controller, pressure sensor and electro-magnet are connected with the control box, and the magnet adsorbate corresponds the setting from top to bottom with the electro-magnet, and when locking mechanism locked the apron, there is the clearance between magnet adsorbate and the electro-magnet. The electric core is compressed through the magnetic attraction effect of the magnet adsorption body on the cover plate and the electromagnet on the frame, the electromagnet is not electrified in a normal state, pressing force is provided by means of the attraction force between the magnet adsorption body and the iron core of the electromagnet, the pressure sensor is arranged on the insulating plate, when the detected pressure value changes and is not at the set value of the controller, the pressing force of the cover plate on the electric core changes, the controller adjusts the current magnitude or direction of the electromagnet coil to control the magnetic force of the electromagnet, the magnetic force between the electromagnet and the magnet adsorption body, namely the pressing force of the cover plate on the electric core, is controlled through fine adjustment of the magnetic force of the electromagnet, and the pressing force of the cover plate on the electric core is kept constant and always kept at the set value; when the cover plate compresses the electric core, a gap exists between the magnet adsorption body and the electromagnet, and the necessary condition for ensuring that the pressing force of the cover plate is adjustable is provided.
Preferably, a pressure sensor is arranged on the insulating plate close to each electromagnet, and each electromagnet and each pressure sensor are connected with an independent control box. Through measuring the pressure of each point, finely tune each point, guarantee that the packing force of whole apron to electric core keeps at the setting value.
Preferably, the cover plate is provided with a hollow for identification and positioning of the visual identification system. The visual recognition system detects whether the battery cell exists on the frame through hollowing and determines the mounting position of the cover plate through image comparison.
Preferably, the cross section of the lug limiting lug is L-shaped and is respectively positioned at four corners of the frame, the electromagnets are positioned on two long side edges of the frame and penetrate through the insulating plate, two long side edges of the cover plate extend outwards to form bulges, and the bulges are provided with positioning holes corresponding to the guide columns and magnet adsorbers corresponding to the electromagnets. The cross section of the lug limiting lug is L-shaped and is positioned at four corners of the frame, so that the position of the battery cell can be limited, and the position of the lug can be limited.
Preferably, the positioning lug and the lug limiting lug are fixed with the insulating panel and the frame through fixing bolts.
Preferably, the guide post is small in top and large in bottom.
Preferably, the shape of the cover plate is matched with the battery cell limiting groove.
Preferably, the ratio of the length to the width of the cell limiting groove is greater than 3: 1.
therefore, the invention has the following beneficial effects: (1) the clamp positioning lug and the lug limiting lug can accurately position the battery cell, the clamping force applied to the battery cell in the transferring process is consistent, and the deviation and the volume expansion deformation of a battery cell pole piece in the transferring process are prevented; (2) the procedures of resistance test, tab pre-welding, tab cutting, main welding and the like after the battery core is discharged do not need to disassemble the clamp for many times, so that the production efficiency is improved; (3) the problem that the battery cell with the large length-width ratio is easy to bend and deform in the length direction in the transferring process is solved, and the consistency of the performance of the battery after the manufacture procedure is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded view of the cover of the present invention;
fig. 3 is a schematic structural diagram of the base of the present invention.
In the figure: 1. the magnetic sensor comprises a bottom plate 11, a frame 12, an insulating panel 13, a positioning lug 131, a fixing bolt 14, an electromagnet 15, a guide column 16, a lug limiting lug 17, a clamping groove 18, a control box 19, a pressure sensor 2, a battery cell 21, a lug 3, a cover plate 31, a magnet adsorber 311, a through hole 312, a screw 32, a positioning hole 33 and a hollow part.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
In the embodiment shown in fig. 1, 2 and 3, the cell transfer jig of the present invention is suitable for cell transfer in a manufacturing process of a laminated lithium battery with a large length-width ratio, and includes a base and a cover plate 3, where the base includes a rectangular bottom plate 1, a rectangular frame 11 fixedly disposed on the bottom plate, and 5 rectangular insulation panels 12, the frame is in a rectangular shape with a large length-width ratio, the insulation panels are disposed on the frame in parallel, two ends of each insulation panel are fixedly connected to two long sides of the frame through fixing bolts, a gap exists between each adjacent insulation panel and the corresponding insulation panel, a groove is disposed at a position of the corresponding gap on the long side of the frame, the gap and the groove together form a clamping groove 17 for a manipulator to clamp a cell 2, and positioning protrusions 13, tab limiting protrusions 16 and guide posts 15 are disposed on portions of the two long sides of the insulation panel located on the frame, the cross sections of the 4 lug limiting lugs are L-shaped and are respectively positioned on four corners of the frame, the lug limiting lugs are fixedly connected with the insulating panel and the frame through fixing bolts 131, the 8 positioning lugs with rectangular cross sections are positioned on two long side edges of the frame, the positioning lugs are fixedly connected with the insulating panel and the frame through fixing bolts, the positioning lugs and the lug limiting lugs jointly form a cell limiting groove, the 4 guide posts are in a small-top-down shape and are fixedly connected with the insulating panel and the frame through the fixing bolts, a positioning hole 32 matched with the guide posts is arranged at a corresponding position on the cover plate, the frame and the cover plate are locked through a locking mechanism, the cell is positioned between the cover plate and the frame after the installation is completed, and the lugs 21 are exposed outside the cell transferring clamp; the locking mechanism comprises a magnet adsorber 31 arranged on the cover plate, 6 electromagnets 14 arranged on two long sides of the frame, pressure sensors 19 arranged on the insulating plate and a control box 18 arranged on the bottom plate, each electromagnet and each pressure sensor are connected with an independent control box and controlled by the independent control box, 6 bulges extend outwards from two long sides of the cover plate, positioning holes and through holes 311 corresponding to the guide columns and the electromagnets are arranged on the bulges, the magnet adsorber is fixed with the upper cover plate through the through holes by screws 312, the control box comprises a power supply and a controller, the pressure sensors and the electromagnets are connected with the control box, the magnet adsorber and the electromagnets are arranged up and down correspondingly, and when the locking mechanism locks the cover plate, a gap exists between the magnet adsorber and the electromagnets instead of a laminating state; the insulating plate is provided with a pressure sensor near each electromagnet, the pressure sensors are positioned on the inner sides of the electromagnets, the electromagnets are not electrified under normal conditions, pressing force is provided by means of the attraction between the magnet adsorbing bodies and the iron core, the pressure sensors are arranged on the insulating plate, when the detected pressure value changes and is not at the set value of the controller, the pressing force of the cover plate on the electric core changes, the controller adjusts the current magnitude or direction of the electromagnet coil to control the magnetic force of the electromagnets, the magnetic force between the electromagnets and the magnet adsorbing bodies, namely the pressing force of the cover plate on the electric core, is controlled by finely adjusting the magnetic force of the electromagnets, and the pressing force of the cover plate on the electric core is always kept at the set value and is kept constant; rectangular hollows 33 for identification and positioning of a visual identification system are arranged on the cover plate, and the number of the hollows is 3; the shape of the cover plate is matched with that of the battery cell limiting groove; the length-width ratio of the battery cell limiting groove is 6: 1.
as shown in fig. 3, the base is of a vertically symmetrical structure, the insulating panel is defined as a first insulating panel, a second insulating panel, a third edge panel, a fourth insulating panel and a fifth insulating panel from left to right, both ends of the second insulating panel are respectively provided with 1 electromagnet, 1 guide post and 1 positioning lug, both ends of the third insulating panel are respectively provided with 2 positioning lugs and 1 electromagnet, the electromagnets are located between the 2 positioning lugs, both ends of the fourth insulating panel are respectively provided with 1 electromagnet, 1 guide post and 1 positioning lug.
The specific implementation steps of the cell transfer are as follows:
s1: a bottom plate of the clamp is arranged on an automatic transfer mechanism, the cell laminated, wound and pasted with the adhesive tape is clamped and placed in a mechanical cell positioning groove by a mechanical handle, the manipulator is positioned in the clamping groove, and tabs at two ends of the cell are respectively fixed in two-tab limiting lugs;
s2: the manipulator is pulled out from the clamping groove;
s3: the positioning groove which can be identified by the visual identification system is accurately positioned, the cover plate is placed in the electric core limiting groove through a mechanical handle, and the positioning hole on the cover plate is inserted into the guide post on the bottom plate of the clamp; meanwhile, the battery cell is compressed through the magnet adsorbates and the electromagnet phases which are arranged on the two sides of the clamp;
s4: the clamp loaded with the battery cell is sequentially transferred to resistance testing, tab prewelding, tab cutting and main welding processes through the transfer mechanism, and then the battery cell is taken out and placed into a shell through a mechanical handle.

Claims (9)

1. A cell transferring clamp is suitable for transferring cells in the manufacturing process of a laminated lithium battery with a large length-width ratio and is characterized by comprising a base and a cover plate, wherein the base comprises a bottom plate, a frame and a plurality of insulating panels, the frame is fixedly arranged on the bottom plate and is rectangular with a large length-width ratio, the insulating panels are arranged on the frame, gaps are reserved between the insulating panels and the insulating panels, grooves are arranged at positions, corresponding to the gaps, of the sides of the frame, the gaps and the grooves jointly form clamping grooves for clamping the cells by a manipulator, positioning lugs, lug limiting lugs and guide posts are arranged on parts, located on two long sides of the frame, of the insulating panels, the cross sections of the lug limiting lugs are L-shaped and are located at four corners of the frame, the positioning lugs, the lug limiting lugs and the guide posts are fixedly connected with the frame, and the positioning lugs and the lug limiting lugs jointly form cell limiting grooves, the battery cell transportation clamp is characterized in that a positioning hole matched with the guide post is formed in the corresponding position on the cover plate, the frame and the cover plate are locked through the locking mechanism, the battery cell is located between the cover plate and the frame after installation is completed, and the lug is exposed outside the battery cell transportation clamp.
2. The battery cell transferring clamp according to claim 1, wherein the locking mechanism includes a magnet adsorber disposed on the cover plate, an electromagnet disposed on the frame, a pressure sensor disposed on the insulating plate, and a control box disposed on the base plate, the control box includes a power supply and a controller, the pressure sensor and the electromagnet are connected to the control box, the magnet adsorber and the electromagnet are disposed in a vertically corresponding manner, and when the locking mechanism locks the cover plate, a gap exists between the magnet adsorber and the electromagnet.
3. The cell transfer jig of claim 2, wherein a pressure sensor is disposed on the insulating plate adjacent to each electromagnet, and each electromagnet and each pressure sensor are connected to a separate control box.
4. The battery cell transferring clamp according to claim 1, wherein the cover plate is provided with a hollow for identification and positioning by a visual identification system.
5. The battery cell transferring clamp according to claim 2, wherein the cross section of the lug limiting protrusion is L-shaped and located at four corners of the frame, the electromagnet is located on two long sides of the frame and penetrates through the insulating plate, two long sides of the cover plate extend outwards to form protrusions, and the protrusions are provided with positioning holes corresponding to the guide posts and magnet adsorbers corresponding to the electromagnet.
6. The battery cell transferring clamp of claim 1, wherein the positioning lug and the tab limiting lug are fixed to the insulating panel and the frame by fixing bolts.
7. The battery cell transferring clamp of claim 1, wherein the guide post is large in top and small in bottom.
8. The cell transfer jig of claim 6, wherein the cover plate is shaped to fit the cell retaining groove.
9. The cell transfer jig of claim 8, wherein the cell restraint slot has a length-to-width ratio greater than 3: 1.
CN202010872140.3A 2020-08-26 2020-08-26 Anchor clamps are transported to electricity core Active CN112382781B (en)

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CN202010872140.3A CN112382781B (en) 2020-08-26 2020-08-26 Anchor clamps are transported to electricity core

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Application Number Priority Date Filing Date Title
CN202010872140.3A CN112382781B (en) 2020-08-26 2020-08-26 Anchor clamps are transported to electricity core

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CN112382781A CN112382781A (en) 2021-02-19
CN112382781B true CN112382781B (en) 2022-03-18

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