CN220065765U

CN220065765U - Battery electrode lug hot-pressing forming device

Info

Publication number: CN220065765U
Application number: CN202321693767.8U
Authority: CN
Inventors: 文青山; 俞锦荣; 王志欢; 苏佳景
Original assignee: Ningde Amperex Technology Ltd
Current assignee: Ningde Amperex Technology Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-11-21
Anticipated expiration: 2033-06-29

Abstract

The application discloses a battery electrode lug hot-pressing forming device which comprises a rubberizing mechanism, a pre-hot-pressing mechanism, a hot-pressing mechanism and a heat radiation mechanism which are sequentially arranged. The rubberizing mechanism is configured to sequentially adhere the tab glue and the protective film to two sides of each tab group, and each tab group comprises a plurality of tabs sequentially arranged in the first direction. The preheating pressing mechanism comprises two prepressing blocks capable of relatively moving, each prepressing block is provided with a first groove part, and the width of each first groove part is larger than that of each tab. The hot pressing mechanism comprises two hot pressing blocks capable of relatively moving, each hot pressing block is provided with a second groove part, and the width of each second groove part is smaller than that of each tab. The heat radiation mechanism comprises a supporting frame, two heat sources and a placing frame, wherein the placing frame is configured to bear the tab group processed by the hot pressing mechanism and move the tab group between the two heat sources, and the two heat sources are configured to respectively conduct heat radiation on two sides of the tab group. The battery electrode lug hot-press forming device can improve hot-press yield.

Description

Battery electrode lug hot-pressing forming device

Technical Field

The application relates to the technical field of energy storage, in particular to a battery electrode lug hot-pressing forming device.

Background

The hot-press forming process of the electrode lug is an important process in the production and manufacturing process of the battery, the quality of the electrode lug directly determines the reliability of the battery cell packaging, and in order to meet the requirement of long service life of the battery cell, the electrode lug glue and the electrode lug sheet are required to have good bonding strength. In the hot-pressing forming device of the prior battery electrode lug, bubbles are easily generated in the bonding areas of the two side ends of the electrode lug in the width direction and the electrode lug glue in the hot-pressing process of the electrode lug glue and the electrode lug, so that a liquid leakage channel is formed, and the hot-pressing yield is lower.

Disclosure of Invention

In view of the above, it is necessary to provide a battery tab thermo-compression molding apparatus capable of improving the thermo-compression yield.

The embodiment of the utility model provides a battery tab hot-press forming device which is used for hot-press forming a tab and tab glue. The battery pole lug hot-press forming device comprises a rubberizing mechanism, a pre-hot-pressing mechanism and a hot-pressing mechanism which are sequentially arranged. The rubberizing mechanism is configured to sequentially adhere the tab glue and the protective film to two sides of each tab group, and each tab group comprises a plurality of tabs sequentially arranged in the first direction. The preheating pressing mechanism comprises two prepressing blocks which can move relatively. Each pre-compaction piece is provided with a pre-compaction face, and the pre-compaction face is provided with a plurality of first bosses which are arranged at intervals along a first direction. A first groove part is formed between two adjacent first bosses, and the width of the first groove part is larger than that of the tab in the first direction. The pre-pressing surfaces of the two pre-pressing blocks are arranged oppositely, the first groove parts of the two pre-pressing blocks are configured to hot-press the tab glue and the protective film on the tab, and the first bosses of the two pre-pressing blocks are configured to hot-press the tab glue and the protective film which are located outside the tab in the first direction. The surface of the first groove portion is provided with a rubber layer configured to be in contact with the protective film and uniformly apply pressure to the tab adhesive while transferring heat. The hot pressing mechanism comprises two hot pressing blocks which can move relatively. Each hot pressing block is provided with a hot pressing surface, and the hot pressing surface is provided with a plurality of second bosses which are arranged at intervals along the first direction. And a second groove part is formed between two adjacent second bosses, and the width of the second groove part is smaller than the width of the tab in the first direction. The hot pressing surfaces of the two hot pressing blocks are arranged oppositely, the second groove parts of the two hot pressing blocks are configured to hot press the tab glue and the protective film on part of the tab, and the second bosses of the two hot pressing blocks are configured to hot press the two side ends of the tab in the first direction and the tab glue and the protective film which are positioned outside the tab in the first direction. The surface of the second groove portion is provided with a rubber layer configured to be in contact with the protective film and uniformly apply pressure to the tab adhesive while transferring heat.

In the battery tab hot-press forming device, when the preheating pressing mechanism is used for hot-pressing, the tab glue is limited to flow between the two layers of protective films when being melted, the width of the first groove part is larger than that of the tab so that the spacing between the two layers of protective films on the tab is approximately the same, and the tab glue are facilitated to be adhered and bubbles between the tab and the tab glue are discharged. When the hot pressing mechanism is used for hot pressing, the tab glue is limited to flow between the two layers of protective films when being melted, the width of the second groove part is smaller than the width of the tab so that the distance between the two layers of protective films positioned at the side ends of the tab is smaller than the distance between the two layers of protective films positioned at other positions of the tab, and the tab side ends and the tab glue are further bonded and bubbles between the tab side ends and the tab glue are discharged. The hot pressing mechanism and the hot pressing mechanism are used for sequentially carrying out hot pressing on the tab and the tab glue, so that the hot pressing yield of the battery tab hot pressing forming device can be improved.

In some embodiments of the application, the battery tab thermo-compression molding apparatus further comprises a heat radiation mechanism in butt-joint fit with the thermo-compression mechanism. The heat radiation mechanism comprises a supporting frame, two heat sources and a placing frame. The two heat sources are movably connected to the support frame. The rack is movably arranged on one side of the support frame, and is configured to bear the tab group processed by the hot pressing mechanism and move the tab group between the two heat sources. Along the thickness direction of the tab, two heat sources are respectively arranged at intervals with the tab group, and the two heat sources are configured to respectively radiate heat to two sides of the tab group. According to the first aspect, the tab group is placed on the placement frame and is not subjected to other constraint force, so that the tab glue can shrink freely between the two layers of protective films, the risk of poor shrinkage caused by pulling of the tab glue by other constraint force in the shrinking process of the tab glue is reduced, the bonding effect of the tab and the tab glue is improved, and the tab glue is beneficial to forming a regular appearance; in the second aspect, the two heat sources are movably connected to the support frame, so that the distance between the heat sources and the tab group can be accurately controlled, and the intensity of heat radiation can be conveniently adjusted.

In some embodiments of the present application, the first slot portion and the tab are profiled, and along the first direction, the first width W1 of the first slot portion and the width W of the tab satisfy the following relationship: and W1-W is less than or equal to 2mm and less than or equal to 4mm so as to limit the first groove parts to bear the tab pieces in one-to-one correspondence, and the first lug boss is abutted against the tab glue and the protective film which are positioned outside the tab pieces in the first direction. And moreover, the risk of damage to the tab and the tab glue in the hot pressing process is reduced by matching the profiling arrangement with the protective film.

In some embodiments of the present application, the second slot portion is profiled with the tab, and along the first direction, the second width W2 of the second slot portion and the width W of the tab satisfy the following relationship: W-W2 is less than or equal to 2mm and less than or equal to 4mm, so that the second groove part is limited to correspond to the middle part of the carrying tab in the first direction one by one, and the second boss abuts against the side end of the tab in the first direction and the tab glue and the protective film which are positioned outside the tab in the first direction. And moreover, the risk of damage to the tab and the tab glue in the hot pressing process is reduced by matching the profiling arrangement with the protective film.

In some embodiments of the present application, along the protruding direction of the first boss, the height H1 of the first boss and the thickness H of the tab satisfy the following relationship: h1 is less than or equal to 50 percent H, and h1 is less than or equal to 50 percent H, so that the risk of too small pressure between the tab and the tab adhesive caused by too large depth of the two first groove parts is reduced, the tab and the tab adhesive are facilitated to be adhered and bubbles between the tab and the tab adhesive are discharged, and the hot pressing yield of the battery tab hot pressing forming device is improved.

In some embodiments of the present application, the height h2 of the second boss and the height h1 of the first boss satisfy the following relationship along the protruding direction of the second boss: h2 is less than or equal to 50 percent of h1, and the height h2 of the second boss and the height h1 of the first boss meet the following relationship: h2 is less than or equal to 50 percent of h1. The h2 is less than or equal to 50% h1, so that the pressure between the side end of the tab and the tab adhesive is improved, the tab and the tab adhesive are facilitated to be further enabled to be adhered, bubbles between the tab and the tab adhesive are discharged, and the hot pressing yield of the battery tab hot pressing forming device is improved.

In some embodiments of the present application, the following relationship is satisfied by the distance h3 between the two heat sources and the tab group along the thickness direction of the tab: h3 And the thickness of the electrode plate is more than or equal to 0.5mm, so that the electrode plate glue at the side end of the electrode plate can shrink freely, and the risk of damage to the electrode plate group caused by overlarge heat radiation intensity is reduced.

In some embodiments of the present application, the battery tab thermo-compression molding device further includes a wobble plate mechanism that interfaces with the rubberizing mechanism, the wobble plate mechanism being configured to place a plurality of tab groups such that the rubberizing mechanism sequentially attaches tab glue and a protective film on both sides of each tab group.

In some embodiments of the application, the battery tab thermo-compression molding apparatus further comprises a film tearing mechanism in abutting engagement with the heat radiation mechanism, the film tearing mechanism being configured to tear off the protective film on the tab adhesive.

In some embodiments of the present application, the battery tab thermo-compression molding device further includes a tab glue die-cutting mechanism in butt-joint fit with the film tearing mechanism, wherein the tab glue die-cutting mechanism is configured to cut tab glue between two adjacent tab pieces, so that a plurality of tab pieces on the same tab glue are cut into single tab pieces.

In some embodiments of the application, the battery tab thermo-compression molding device further comprises a code engraving mechanism in butt joint with the tab glue die cutting mechanism, wherein the code engraving mechanism is configured to engrave a tracing code on the tab by using laser, and the tracing code of the tab is scanned to record tracing code information so as to facilitate subsequent information tracing.

In some embodiments of the present application, the battery tab thermo-compression molding device further includes a detection mechanism in butt-joint fit with the coding mechanism, and the detection mechanism is configured to detect the scanned tab to distinguish whether the tab is good.

Drawings

Fig. 1 is a schematic view showing a structure of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a good structure of a tab according to an embodiment of the application.

Fig. 3 is a schematic structural view of tab sets, tab adhesives and protective films according to an embodiment of the present application.

Fig. 4 is a schematic structural view of a pre-press mechanism of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 5 is a schematic view showing a first view angle structure of a pre-compression block of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 6 is a schematic structural view of a hot press mechanism of a battery tab hot press molding apparatus in an embodiment of the present application.

Fig. 7 is a schematic view showing a first view angle structure of a thermo-compression block of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 8 is a second view structural schematic diagram of a pre-press block of a battery tab thermo-compression molding apparatus in accordance with an embodiment of the present application.

Fig. 9 is a schematic view showing a second view angle structure of a thermo-compression block of a battery tab thermo-compression molding apparatus in accordance with an embodiment of the present application.

Fig. 10 is a schematic view showing a structure of a heat radiation mechanism of a battery tab thermo-compression molding apparatus in an embodiment of the present application.

Fig. 11 is a schematic structural view of a tab feeding mechanism of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 12 is a schematic structural view of a first feeding member and a second feeding member of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 13 is a schematic view showing a structure of a film tearing mechanism of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 14 is a schematic view showing a structure of a tab adhesive molding mechanism of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 15 is a schematic structural view of a coding mechanism of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Fig. 16 is a schematic structural view of a detecting mechanism of a battery tab thermo-compression molding apparatus in an embodiment of the present application.

Fig. 17 is a schematic structural view of a blanking mechanism of a battery tab thermo-compression molding apparatus according to an embodiment of the present application.

Description of the main reference signs

Battery tab hot-press forming device 100

Tab feeding mechanism 1

First support 101

First coil stock axle 102

First receiving shaft 103

First transfer roller 104

First limiting member 105

First limiting port 106

Tab die cutting mechanism 3

Wobble plate mechanism 5

Rubberizing mechanism 10

First feeding member 11

Second support 111

Second coil stock shaft 112

First discharge member 113

Second feeding member 12

Third roll shaft 121

Second outfeed member 122

Pre-hot press mechanism 20

Prepressing block 21

Pre-pressed surface 211

First boss 212

First groove portion 213

First side 214

Mounting portion 215

First mounting hole 216

First through hole 217

Hot press mechanism 30

Thermal block 31

Hot pressing surface 311

Second boss 312

Second groove portion 313

Second side 314

Second mounting hole 315

Second through hole 316

Heat radiation mechanism 40

Support frame 41

Heat source 42

Placing rack 43

Placement face 431

Limiting assembly 432

Limiting bump 4321

Film tearing mechanism 50

Third support 51

First transfer member 52

Pre-tear film 53

First tear film jaw 54

Second film tearing jaw 55

Tab glue die-cutting mechanism 60

Fourth support 61

Second transfer element 62

First detecting member 63

Second detecting member 64

First cutting member 65

Second cutting member 66

Coding mechanism 70

Fifth supporting member 71

Code-engraving vibrating mirror 72

Adjustment part 721

Carrier 73

Detection mechanism 80

Sixth support 801

Third transfer element 802

Upper surface detecting member 803

First light source piece 804

Lower surface detecting member 805

Second light source member 806

Discharging mechanism 85

Tray rack 851

Tray 852

Mechanical arm 853

Platform 86

Tab set 90

Tab 91

Tab glue 92

Protective film 93

First direction X

The application will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a battery tab hot-press forming device which is used for hot-press forming a tab and tab glue. The battery pole lug hot-pressing forming device comprises a rubberizing mechanism, a pre-hot-pressing mechanism, a hot-pressing mechanism and a heat radiation mechanism which are sequentially arranged. The rubberizing mechanism is configured to sequentially adhere the tab glue and the protective film to two sides of each tab group, and each tab group comprises a plurality of tabs sequentially arranged in the first direction. The preheating pressing mechanism comprises two prepressing blocks which can move relatively. Each pre-compaction piece is provided with a pre-compaction face, and the pre-compaction face is provided with a plurality of first bosses which are arranged at intervals along a first direction. A first groove part is formed between two adjacent first bosses, and the width of the first groove part is larger than that of the tab in the first direction. The pre-pressing surfaces of the two pre-pressing blocks are arranged oppositely, the first groove parts of the two pre-pressing blocks are configured to hot-press the tab glue and the protective film on the tab, and the first bosses of the two pre-pressing blocks are configured to hot-press the tab glue and the protective film which are located outside the tab in the first direction. The hot pressing mechanism comprises two hot pressing blocks which can move relatively. Each hot pressing block is provided with a hot pressing surface, and the hot pressing surface is provided with a plurality of second bosses which are arranged at intervals along the first direction. And a second groove part is formed between two adjacent second bosses, and the width of the second groove part is smaller than the width of the tab in the first direction. The hot pressing surfaces of the two hot pressing blocks are arranged oppositely, the second groove parts of the two hot pressing blocks are configured to hot press the tab glue and the protective film on part of the tab, and the second bosses of the two hot pressing blocks are configured to hot press the two side ends of the tab in the first direction and the tab glue and the protective film which are positioned outside the tab in the first direction. The heat radiation mechanism comprises a supporting frame, two heat sources and a placing frame, wherein the placing frame is configured to bear the tab group processed by the hot pressing mechanism and move the tab group between the two heat sources, and the two heat sources are configured to respectively conduct heat radiation on two sides of the tab group.

Embodiments of the present application will be further described below with reference to the accompanying drawings.

Referring to fig. 1 and 2 together, an embodiment of the application provides a battery tab thermo-compression molding device 100 for thermo-compression molding a tab 91 and a tab adhesive 92. Specifically, the tab glue 92 after hot press molding is coated on the peripheral side of the tab 91, so that the tab 91 and the battery packaging bag are in sealing connection through the tab glue 92 in the preparation process of the battery.

Referring to fig. 1 and 3, a battery tab thermo-compression molding apparatus 100 includes a rubberizing mechanism 10, a preheating pressing mechanism 20 and a thermo-compression mechanism 30 sequentially disposed.

The rubberizing mechanism 10 is configured to sequentially adhere the tab adhesive 92 and the protective film 93 on two sides of each tab group 90, and each tab group 90 includes a plurality of tab pieces 91 sequentially arranged along a first direction X, where the first direction X is a width direction of the tab pieces 91, and a melting point temperature of the protective film 93 is higher than a melting point temperature of the tab adhesive 92. The rubberizing mechanism 10 is used for enabling a plurality of tabs 91 in each tab group 90 to form a group of independent sheet structures under the bonding action of the tab glue 92 and the protective film 93. Specifically, each tab 91 is sequentially attached with a layer of tab glue 92 and a layer of protective film 93 on one side in the thickness direction thereof, and each tab 91 is sequentially attached with a layer of tab glue 92 and a layer of protective film 93 on the other side in the thickness direction thereof, and two layers of tab glue 92 between two adjacent tabs 91 are adhered to each other.

In some embodiments, the rubberizing mechanism 10 includes a first feeding member 11 and a second feeding member 12, the first feeding member 11 is used for feeding the tab adhesive 92, and the second feeding member 12 is used for feeding the protective film 93. It can be appreciated that the rubberizing mechanism 10 may adhere the tab glue 92 and the protective film 93 after being fed to both sides of each tab group 90 through transplanting members such as a mechanical arm.

Referring to fig. 3 and 4, the pre-pressing mechanism 20 includes two pre-pressing blocks 21 that are movable relative to each other. Each of the pre-pressing blocks 21 is provided with a pre-pressing surface 211, the pre-pressing surface 211 is provided with a plurality of first bosses 212 arranged at intervals along the first direction X, a first groove 213 is formed between two adjacent first bosses 212, and the plurality of first grooves 213 are arranged at intervals along the first direction X. And along the first direction X, the width of the first groove 213 is greater than the width of the tab 91, so that the first groove 213 carries the tab 91 in a one-to-one correspondence, and the first boss 212 abuts against the tab adhesive 92 and the protective film 93 located outside the tab 91 in the first direction X.

The pre-pressing surfaces 211 of the two pre-pressing blocks 21 are disposed opposite to each other, the first groove portions 213 of the two pre-pressing blocks 21 are configured to thermally press the tab glue 92 and the protective film 93 on the tab 91, and the first bosses 212 of the two pre-pressing blocks 21 are configured to thermally press the tab glue 92 and the protective film 93 located outside the tab 91 in the first direction X. The hot pressing temperature of the pre-press block 21 is limited between the melting point temperature of the tab adhesive 92 and the melting point temperature of the protective film 93. In the hot pressing process of the two pre-pressing blocks 21, the tab glue 92 is restricted to flow between the two layers of the protective films 93 when being melted, and the width of the first groove 213 is larger than that of the tab 91 so that the distance between the two layers of the protective films 93 on the tab 91 is approximately the same, which is beneficial to bonding the tab 91 and the tab glue 92 and discharging air bubbles between the tab 91 and the tab glue 92.

In some embodiments, the pre-press block 21 is further configured to carry each tab set 90 prior to hot pressing, and the rubberizing mechanism 10 adheres the tab glue 92 and the protective film 93 to the tab set 90 located on the pre-press block 21.

In some embodiments, the surface of the first groove part 213 is provided with a rubber layer (not shown) configured to contact the protective film 93 and uniformly apply pressure to the tab adhesive 92 while transferring heat, improving the effect of exhausting bubbles.

In some embodiments, the pre-pressing block 21 further includes two first side surfaces 214 disposed adjacent to the pre-pressing surface 211, and the two first side surfaces 214 are convexly provided with mounting portions 215, and each mounting portion 215 is provided with first mounting holes 216 disposed at intervals along the first direction X, and the first mounting holes 216 are configured to be connected with driving devices such as a cylinder, a screw, or a motor, so as to improve convenience of installation.

In some embodiments, the pre-pressing block 21 is further provided with a first through hole 217 penetrating in the first direction X, and the first through hole 217 is used for mounting a sensing device such as a temperature sensing wire to sense the hot pressing temperature of the pre-pressing block 21.

Referring to fig. 6 and 7 together, the hot pressing mechanism 30 includes two relatively movable hot pressing blocks 31, each hot pressing block 31 is provided with a hot pressing surface 311, the hot pressing surface 311 is provided with a plurality of second bosses 312 disposed at intervals along the first direction X, a second groove 313 is formed between two adjacent second bosses 312, and the plurality of second grooves 313 are disposed at intervals along the first direction X. The width of the second groove 313 is smaller than the width of the tab 91 along the first direction X, so that the second groove 313 corresponds to the middle part of the tab 91 in the first direction X one by one, and the second boss 312 abuts against the side end of the tab 91 in the first direction X and the tab adhesive 92 and the protective film 93 located outside the tab 91 in the first direction X.

The hot pressing surfaces 311 of the two hot pressing blocks 31 are disposed opposite to each other, the second groove portions 313 of the two hot pressing blocks 31 are configured to hot press the tab adhesive 92 and the protective film 93 on a part of the tab 91, and the second bosses 312 of the two hot pressing blocks 31 are configured to hot press both side ends of the tab 91 in the first direction X and the tab adhesive 92 and the protective film 93 located outside the tab 91 in the first direction X. The hot pressing temperature of the hot pressing block 31 is limited between the melting point temperature of the tab adhesive 92 and the melting point temperature of the protective film 93. In the hot pressing process of the two hot pressing blocks 31, the tab adhesive 92 is restricted to flow between the two layers of the protective films 93 when being melted, the width of the second groove 313 is smaller than the width of the tab 91 so that the distance between the two layers of the protective films 93 positioned at the side ends of the tab 91 is smaller than the distance between the two layers of the protective films 93 positioned at other positions of the tab 91, thereby being beneficial to further bonding the side ends of the tab 91 and the tab adhesive 92 and discharging bubbles between the side ends of the tab 91 and the tab adhesive 92.

In some embodiments, the surface of the second groove portion 313 is provided with a rubber layer (not shown) configured to contact the protective film 93 and uniformly apply pressure to the tab adhesive 92 while transferring heat, improving the effect of exhausting bubbles.

In some embodiments, the thermo-compression block 31 further includes a second side 314 disposed opposite to the thermo-compression surface 311, and the second side 314 is provided with second mounting holes 315 disposed at intervals along the first direction X, and the second mounting holes 315 are configured to be connected to driving devices such as a cylinder, a screw, or a motor, so as to improve convenience of installation.

In some embodiments, the thermal block 31 is further provided with a second through hole 316 penetrating in the first direction X, and the second through hole 316 is used for mounting sensing devices such as temperature sensing wires to sense the hot pressing temperature of the thermal block 31.

In the battery tab thermo-compression molding apparatus 100, when the pre-heating press mechanism 20 is hot-pressed, the tab adhesive 92 is restricted from flowing between the two layers of protective films 93 when melting, and the width of the first groove 213 is larger than the width of the tab 91 so that the distance between the two layers of protective films 93 on the tab 91 is approximately the same, which is beneficial for bonding the tab 91 and the tab adhesive 92 and exhausting air bubbles between the tab 91 and the tab adhesive 92. When the hot pressing mechanism 30 is hot pressed, the tab glue 92 is restricted to flow between the two layers of the protective films 93 when being melted, the width of the second groove 313 is smaller than the width of the tab 91 so that the distance between the two layers of the protective films 93 positioned at the side end of the tab 91 is smaller than the distance between the two layers of the protective films 93 positioned at other positions of the tab 91, thereby being beneficial to further bonding the side end of the tab 91 and the tab glue 92 and exhausting bubbles between the side end of the tab 91 and the tab glue 92. The hot pressing mechanism 20 and the hot pressing mechanism 30 sequentially perform hot pressing on the tab 91 and the tab adhesive 92, so that the hot pressing yield of the battery tab hot press molding device 100 can be improved.

In some embodiments, the number of tabs 91, the number of first slots 213, and the number of second slots 313 in each tab set 90 are the same so that the pre-press mechanism 20 and the press mechanism 30 sequentially heat press the tabs 91 and the tab glue 92. Alternatively, the number of tabs 91 in each tab group 90 is one of 2, 3, 4, 5, 6, 7, 8, 9, etc.

Referring to fig. 4 and 5 again, in some embodiments, the first slot 213 is profiled with the tab 91, specifically, the profiled arrangement refers to that the extending directions of two sidewalls of the first slot 213 opposite to each other along the first direction X are substantially the same as the extending directions of two sides of the tab 91 in the first direction X. Along the first direction X, the first width W1 of the first groove 213 and the width W of the tab 91 satisfy the following relationship: 2mm is less than or equal to W1-W is less than or equal to 4mm so as to limit the first groove parts 213 to bear the tab 91 in a one-to-one correspondence, and the first boss 212 abuts against the tab adhesive 92 and the protective film 93 which are positioned outside the tab 91 in the first direction X. And, the profile modeling arrangement and the cooperation of the protective film 93 are beneficial to reducing the damage risk of the tab 91 and the tab adhesive 92 in the hot pressing process.

Referring to the drawings, W1-W may alternatively be any one of 2mm, 2.5mm, 3mm, 3.5mm, 4mm, and any other value in the range of 2mm to 4 mm.

Referring again to fig. 6 and 7, in some embodiments, the second groove 313 is contoured with the tab 91, specifically, the contoured configuration refers to the shape adaptation of two sidewalls of the second groove 313 disposed opposite to each other along the first direction X and two sides of the tab 91 in the first direction X. The second width W2 of the second groove portion 313 and the width W of the tab 91 in the first direction X satisfy the following relationship: W-W2 is less than or equal to 2mm and less than or equal to 4mm, so as to limit the second groove 313 to correspond to the middle part of the carrying tab 91 in the first direction X one by one, and the second boss 312 abuts against the side end of the tab 91 in the first direction X, and the tab adhesive 92 and the protective film 93 which are positioned outside the tab 91 in the first direction X. And, the profile modeling arrangement and the cooperation of the protective film 93 are beneficial to reducing the damage risk of the tab 91 and the tab adhesive 92 in the hot pressing process.

Alternatively, W-W2 may take the form of one of 2mm, 2.5mm, 3mm, 3.5mm, 4mm, and any other value in the range of 2mm to 4 mm.

Referring to fig. 4 and 8, in some embodiments, along the protruding direction of the first boss 212, the height H1 of the first boss 212 and the thickness H of the tab 91 satisfy the following relationship: h1 is less than or equal to 50% H, specifically, when the two pre-pressing pieces 21 are hot pressed, the depth of the two first groove portions 213 is the height 2H1 of the two first bosses 212, and the depth 2H1 of the two first groove portions 213 and the thickness H of the tab 91 satisfy the following relationship: 2H1 is less than or equal to H to reduce the too big and too little risk of pressure between tab 91 and the tab adhesive 92 that leads to of the degree of depth of two first slot portions 213, be favorable to making tab 91 and tab adhesive 92 bond and discharge the bubble between tab 91 and the tab adhesive 92, and then improve the hot pressing yield of battery tab hot press molding device 100.

It will be appreciated that the two sets of pre-press blocks 21 are configured to simultaneously heat and press two tab sets 90.

Referring to fig. 9, in some embodiments, along the protruding direction of the second boss 312, the height h2 of the second boss 312 and the height h1 of the first boss 212 satisfy the following relationship: h2 is less than or equal to 50 percent of h1. When the two heat pressing blocks 31 are heat pressed, the depth of the two second groove portions 313 is the height 2h2 of the two second bosses 312, and the depth 2h2 of the two second groove portions 313 and the depth 2h1 of the two first groove portions 213 satisfy the following relationship: 2h2 is less than or equal to h1 to improve the pressure between the tab 91 and the tab adhesive 92, be favorable to further making tab 91 and tab adhesive 92 bond and discharge the bubble between tab 91 and tab adhesive 92, and then improve the hot pressing yield of battery tab hot pressing forming device 100.

Referring to fig. 10, in some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a heat radiation mechanism 40 in abutting engagement with the thermo-compression mechanism 30. The heat radiation mechanism 40 includes a support frame 41, two heat sources 42, and a placement frame 43. Two heat sources 42 are movably connected to the support frame 41. The placing frame 43 is movably disposed on one side of the supporting frame 41, and the placing frame 43 is configured to carry the tab set 90 processed by the hot pressing mechanism 30 and move the tab set 90 between the two heat sources 42. Along the thickness direction of the tab 91, two heat sources 42 are respectively disposed at intervals from the tab group 90, and the two heat sources 42 are configured to respectively radiate heat to both sides of the tab group 90. In the process of heat radiation, in the first aspect, the tab group 90 is placed on the placement frame 43 and is not subject to other constraint force, so that the tab glue 92 can shrink freely between the two layers of protective films 93, the risk that the tab glue 92 is pulled by other constraint force in the shrinking process of the tab glue 92 to generate poor shrinkage is reduced, the bonding effect of bonding the tab 91 and the tab glue 92 is improved, and the tab glue 92 can form a regular appearance; in the second aspect, the two heat sources 42 are movably connected to the supporting frame 41, so as to precisely control the space between the heat sources 42 and the tab set 90, thereby facilitating adjustment of the intensity of heat radiation.

Alternatively, the two heat sources 42 may be movably connected to the support frame 41 by a driving member such as a screw, a cylinder, or a motor.

In some embodiments, the heat radiation mechanism 40 further includes a temperature sensor for sensing and feeding back the intensity of the heat radiation in real time so as to adjust the intensity of the heat radiation.

In some embodiments, the placement frame 43 includes a placement surface 431 and a limiting component 432, where the placement surface 431 is used to place the tab set 90. Spacing subassembly 432 sets up in the both ends of placing the face 431 along first direction X interval, and every spacing subassembly 432 includes two spacing lugs 4321, and two spacing lugs 4321 interval sets up for it is spacing to be located utmost point tab group 90 both ends utmost point ear glue 92 and protection film 93 in first direction X, reduces the risk that utmost point tab group 90 dropped from placing the face 431, and is convenient for fix a position utmost point tab group 90.

In some embodiments, the distance h3 between the two heat sources 42 and the tab group 90, respectively, in the thickness direction of the tab 91 satisfies the following relationship: h3 Not less than 0.5mm, the tab glue 92 positioned at the side end of the tab 91 can shrink freely, and the risk of damage to the tab group 90 caused by overlarge heat radiation intensity can be reduced.

Alternatively, h3 may be one of any other values within the range of 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3 mm.

In some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a wobble plate mechanism 5 that interfaces with the rubberizing mechanism 10, the wobble plate mechanism 5 being configured to place a plurality of tabs 91 to form tab groups 90, such that the rubberizing mechanism sequentially attaches tab glue 92 and protective film 93 on both sides of each tab group 90. Compared with the existing mode of directly attaching the tab glue to the continuous tab coil stock, the wobble plate mechanism 5 can reduce the risk of dislocation between the tab 91 and the tab glue 92 and improve the hot pressing yield of the battery tab hot pressing device 100.

Referring to fig. 1 again, in some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a tab feeding mechanism 1 and a tab die-cutting mechanism 3, where the tab feeding mechanism 1, the tab die-cutting mechanism 3 and the wobble plate mechanism 5 are sequentially arranged. The tab feeding mechanism 1 is configured to feed a full roll of tab sheet material and to spread the full roll of tab sheet material. The tab die cutting mechanism 3 is configured to cut the spread tab stock such that the entire roll of tab stock is slit into individual tabs 91.

It will be appreciated that the wobble plate mechanism 5 may also be configured to position a plurality of tabs 91 so as to place the plurality of tabs 91 on the pre-press block 21, and the rubberizing mechanism 10 attaches the tab adhesive 92 and the protective film 93 to the tab group 90 located on the pre-press block 21.

Referring to fig. 11, the tab feeding mechanism 1 includes a first supporting member 101, a first winding shaft 102, a first receiving shaft 103, a first conveying roller 104 and a first limiting member 105. The first support 101 is configured to support and connect the first roll shaft 102, the first take-up shaft 103, the first transfer roller 104, and the first stopper 105. The first roll shaft 102 is rotatably connected to the first support 101 and is configured to connect a full roll of tab stock 34. The first receiving shaft 103 is rotatably connected to the first supporting member 101 and located at one side of the first winding shaft 102, and the first receiving shaft 103 is configured to wind the release paper 95 on the tab sheet 94. The first transfer roller 104 is rotatably connected to the first support 101 and configured to transfer the tab sheet 94 output from the first roll shaft 102. The first limiting piece 105 is located at one side of the first conveying roller 104, the first limiting piece 105 is provided with a first limiting opening 106, the tab sheet 94 conveyed by the first conveying roller 104 is output from the first limiting opening 106, the first limiting opening 106 is configured to reshape the tab sheet 94 to enable the tab sheet 94 to be in a paved state, and rectify the tab sheet 94, so that the tab sheet die cutting mechanism 3 is convenient to cut the paved tab sheet.

It can be appreciated that the number of the first winding shafts 102 is plural, so as to connect a plurality of tab sheets 94 in a whole roll, and further output a plurality of tab sheets 94 through the first limiting opening 106 at the same time, thereby improving the hot pressing efficiency. The number of first take-up shafts 103 is equal to the number of first roll-up shafts 102 to wind the separator paper 95 on the plurality of tab sheets 94 in one-to-one correspondence. Alternatively, the number of first reels 102 and first reels 102 is 2, 3, 4, 5, 6, etc.

Referring to fig. 12, the first feeding member 11 includes a second supporting member 111, a second winding shaft 112, and a first discharging member 113. The second support 111 is configured to support and connect the second roll shaft 112 and the first discharge member 113. The second roll shaft 112 is rotatably connected to the second support 111 and is configured to connect a full roll of tab stock. The first outfeed member 113 is configured to convey the tab stock tape output from the second roll stock shaft 112. The second feeding member 12 includes a third winding shaft 121 and a second discharging member 122, and the third winding shaft 121 is rotatably connected to the second supporting member 111 and configured to be connected to a full roll of protective film material tape. The second outfeed 122 is configured to deliver a protective film web output from the third web spool 121.

It can be appreciated that the number of the second winding shafts 112 is plural, so as to connect a plurality of tab adhesive tapes of a whole roll, and further output a plurality of tab adhesive tapes through the first discharging member 113 at the same time, thereby improving the hot pressing efficiency. Alternatively, the number of second reels 112 is 2, 3, 4, 5, 6, etc. The number of the third winding shafts 121 is multiple, so that a plurality of whole-roll type protective film material belts can be conveniently connected, and then a plurality of protective film material belts can be simultaneously output through the second discharging part 122, so that the hot pressing efficiency is improved. Alternatively, the number of the third winding shafts 121 is 2, 3, 4, 5, 6, etc. Referring to fig. 13, in some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a film tearing mechanism 50 in butt-joint engagement with the heat radiation mechanism 40, where the film tearing mechanism 50 is configured to tear off the protective film 93 on the tab adhesive 92. It should be noted that, the protection film 93 is used to reduce the risk of damage to the tab adhesive 92 during the process of preheating the pressing mechanism 20, the hot pressing mechanism 30, and the heat radiation mechanism 40, and to enable the tab adhesive 92 to be melted and reshaped without dissolution loss during the heating process.

In some embodiments, the film tearing mechanism 50 is further configured to cool the tab set 90 prior to tearing the protective film 93 on the tab glue 92 to reduce the risk of the protective film 93 being torn off creating a film tearing seal.

Specifically, the film tearing mechanism 50 includes a third support 51, a first transfer 52, a pre-film tearing member 53, a first film tearing jaw 54, and a second film tearing jaw 55. The third support 51 is configured to support and connect the first transfer 52, pre-tear film 53, first tear film jaw 54 and second tear film jaw 55. The first transfer member 52 is configured to transfer the tab group 90 treated by the heat radiation mechanism 40 to between the pre-film tearing member 53, the first film tearing jaw 54, and the second film tearing jaw 55. Wherein, the pre-tearing film piece 53 and the first conveying piece 52 are arranged in sequence along the first arrangement direction, and the first tearing film clamping jaw 54 and the second tearing film clamping jaw 55 are movably arranged at two sides of the first conveying piece 52 along the direction perpendicular to the first arrangement direction. The pre-tear film member 53 is configured to adsorb the protective films 93 on both sides of the end portion of the tab set 90, so that the protective films 93 on the end portion of the tab set 90 and the tab glue 92 are preliminarily separated to form two gaps, the first tear film holding jaw 54 is configured to extend into one of the gaps to separate the protective film 93 located on one side in the thickness direction of the tab 91, and the second tear film holding jaw 55 is configured to extend into the other gap to separate the protective film 93 located on the other side in the thickness direction of the tab 91.

Referring to fig. 14, in some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a tab glue cutting mechanism 60 in butt-joint fit with the film tearing mechanism 50, and the tab glue cutting mechanism 60 is configured to cut the tab glue 92 between two adjacent tab pieces 91, so that a plurality of tab pieces 91 on the same tab glue 92 are cut into single tab pieces 91.

Specifically, the tab adhesive mold cutting mechanism 60 includes a fourth support 61, a second transfer 62, a first detection 63, a second detection 64, a first cutting 65, and a second cutting 66. The fourth supporting member 61 is configured to support and connect the second conveying member 62, the first detecting member 63, the second detecting member 64, the first cutting member 65, and the second cutting member 66. The second conveying member 62 is configured to convey the tab group 90 processed by the film tearing mechanism 50 to the first detecting member 63, the second detecting member 64, and between the first cutting member 65 and the second cutting member 66 in this order. The first detecting piece 63 is configured to detect the appearance of the tab group 90. The second sensing element 64 is configured to sense the thickness of the tab adhesive 92. The second transfer member 62 is provided with a relief opening, and the first cutting member 65 and the second cutting member 66 are disposed opposite to each other and configured to pass through the relief opening to cut the tab adhesive 92 between two adjacent tab pieces 91.

In some embodiments, the tab glue die-cutting mechanism 60 is further configured to blow air at the cutting location during the cutting process in order to remove the scrap material of the tab glue 92 formed by the cutting, reducing the risk of the scrap material adhering to the tab 91 resulting in a poor appearance of the tab 91. Specifically, the first cutting member 65 is provided with a cut surface, the cut surface is provided with a blowing hole, and the blowing hole is used for communicating an external air source and blowing air to a cutting part cut by the cut surface; and/or the second cutting member 66 is provided with a cut surface provided with a blow hole for communicating with an external air source, and blowing air to a cut portion cut by the cut surface.

Referring to fig. 15, in some embodiments, the battery tab thermo-compression molding device 100 further includes a code-engraving mechanism 70 in butt-joint with the tab glue die-cutting mechanism 60, wherein the code-engraving mechanism 70 is configured to engrave a tracing code on the tab 91 by using a laser, and the tracing code of the tab 91 is scanned to record tracing code information for facilitating subsequent information tracing.

The engraving mechanism 70 includes a fifth support 71, an engraving galvanometer 72, and a carrier 73. Fifth support 71 is configured to support and couple to a code vibrating mirror 72. The code oscillating mirror 72 is adjustably connected to the fifth support 71. The carrier 73 is disposed opposite the code-marking galvanometer 72, and the carrier 73 is disposed opposite the code-marking galvanometer 72 and configured to use a laser to imprint a traceback code on the tab 91. The code oscillating mirror 72 is provided with an adjusting portion 721 for adjusting the focus of the laser light generated by the code oscillating mirror 72.

In some embodiments, the coding mechanism 70 further includes a dust extraction member (not shown) coupled to the carrier 73 and configured to absorb waste generated by the coding.

Referring to fig. 16, in some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a detecting mechanism 80 in butt-joint with the coding mechanism 70, and the detecting mechanism 80 is configured to detect the scanned tab 91 to distinguish whether the tab 91 is good.

The detecting mechanism 80 includes a sixth supporting member 801, a third conveying member 802, an upper surface detecting member 803, a first light source member 804, a lower surface detecting member 805, and a second light source member 806. The sixth support member 801 is configured to support and connect the third transfer member 802, the upper surface detection member 803, the first light source member 804, the lower surface detection member 805, and the second light source member 806. The third transfer member 802 is configured to transfer the tab 91 processed by the coding mechanism 70 to the upper surface detection member 803 and the lower surface detection member 805 in this order. Along the thickness direction of the tab 91, the upper surface detecting piece 803 is configured to detect one surface of the tab 91, and the lower surface detecting piece 805 is configured to detect the other surface of the tab 91. The first light source 804 is disposed at the detection end of the upper surface detection member 803, for improving brightness, thereby facilitating improvement of detection accuracy. The second light source 806 is disposed at the detection end of the lower surface detecting element 805, for improving brightness, so as to facilitate improving detection accuracy.

Optionally, the upper surface detecting element 803 and the lower surface detecting element 805 are CCD (charge coupled device ) detecting instruments, and the CCD detecting instruments are used for converting the tab 91 and the tab glue 92 on the tab 91 into image signals and transmitting the image signals to an image processing system, the image processing system converts the image signals into digital signals according to information such as pixel distribution, brightness, color, and the like, and the image system performs various operations on the signals to extract characteristics of a target, so as to generate a detection result.

Referring to fig. 17, in some embodiments, the battery tab thermo-compression molding apparatus 100 further includes a blanking mechanism 85 in butt-joint engagement with the detecting mechanism 80. The discharging mechanism 85 includes a tray frame 851, a tray 852, and a robot arm 853. The tray 852 is fitted in the tray frame 851, and the tray frame 851 is configured to transfer the tray 852. The robot arm 853 is disposed on one side of the tray frame 851, and the robot arm 853 is configured to pick up the tab 91 qualified by the detection mechanism 80 and transfer the tab to the tray 852 in the tray frame 851. The robot arm 853 is also configured to pick up the tab 91 that is detected as defective by the detecting mechanism 80 and transfer it to the defective magazine on the side of the tray frame 851.

In some embodiments, the battery tab thermo-compression molding device 100 further includes a platform 86, and the tab feeding mechanism 1, the tab die-cutting mechanism 3, the wobble plate mechanism 5, the rubberizing mechanism 10, the preheating pressing mechanism 20, the hot pressing mechanism 30, the heat radiation mechanism 40, the film tearing mechanism 50, the tab die-cutting mechanism 60, the coding mechanism 70, the detecting mechanism 80, and the blanking mechanism 85 are sequentially disposed on the platform 86, so as to improve the integration level of the battery tab thermo-compression molding device 100.

With continued reference to fig. 1, in some embodiments, the number of the hot pressing mechanism 30, the heat radiation mechanism 40, the film tearing mechanism 50, the tab adhesive die cutting mechanism 60, the code marking mechanism 70, the detecting mechanism 80 and the blanking mechanism 85 may be plural, so as to improve the hot pressing efficiency. Optionally, the number of the hot pressing mechanism 30 and the heat radiation mechanism 40 is 6, the number of the film tearing mechanism 50, the tab adhesive die-cutting mechanism 60, the code marking mechanism 70, the detecting mechanism 80 and the blanking mechanism 85 is two, wherein the three hot pressing mechanisms 30, the three heat radiation mechanisms 40, the tab adhesive die-cutting mechanism 60, the code marking mechanism 70, the detecting mechanism 80 and the blanking mechanism 85 are sequentially arranged to form a production line, and the two production lines are arranged on the platform 86 at intervals.

The battery tab thermo-compression molding apparatus 100 specifically includes the following processes in order when in use:

the tab feeding mechanism 1 is used for feeding the tab sheet material of the whole roll, and paving the tab sheet material of the whole roll;

the tab die cutting mechanism 3 cuts the spread tab sheet material to divide the whole roll of tab sheet material into single tab sheets 91;

the wobble plate mechanism 5 places a plurality of tabs 91 to form a tab group 90;

the rubberizing mechanism 10 sequentially attaches a tab adhesive 92 and a protective film 93 on two sides of each tab group 90;

the pre-hot pressing mechanism 20 performs hot pressing on the tab group 90 to bond the tab 91 and the tab glue 92 and discharge air bubbles between the tab 91 and the tab glue 92;

the hot pressing mechanism 30 carries out hot pressing on the tab group 90, so that the side end of the tab 91 and the tab glue 92 are further adhered and bubbles between the side end of the tab 91 and the tab glue 92 are discharged;

the heat radiation mechanism 40 radiates heat to both sides of the tab group 90;

the film tearing mechanism 50 tears off the protective film 93 on the tab adhesive 92;

the tab glue die cutting mechanism 60 cuts the tab glue 92 between two adjacent tab pieces 91, so that a plurality of tab pieces 91 on the same tab glue 92 are cut into single tab pieces 91;

the code etching mechanism 70 uses laser to etch the tracing code on the tab 91, and scans the tracing code of the tab 91 to record tracing code information;

The detection mechanism 80 detects the scanned tab 91 to distinguish whether the tab 91 is good;

the blanking mechanism 85 comprises a good product tray and a non-good product tray, the good product tray is used for bearing the qualified tab 91 detected by the detection mechanism 80, and the non-good product tray is used for bearing the unqualified tab 91 detected by the detection mechanism 80.

Further, other variations within the spirit of the present application will occur to those skilled in the art, and it is intended, of course, that such variations be included within the scope of the present application as disclosed herein.

Claims

1. A battery tab hot-press forming device is used for hot-press forming a tab and tab glue and is characterized by comprising a rubberizing mechanism, a pre-hot-press mechanism and a hot-press mechanism which are sequentially arranged;

the rubberizing mechanism is configured to sequentially adhere the tab adhesives and the protective films to two sides of each tab group, and each tab group comprises a plurality of tab sheets sequentially arranged in a first direction;

the preheating press mechanism comprises two prepressing blocks capable of relatively moving, each prepressing block is provided with a prepressing surface, the prepressing surfaces are provided with a plurality of first bosses which are arranged at intervals along the first direction, a first groove part is formed between two adjacent first bosses, the width of the first groove part is larger than that of the tab in the first direction, the prepressing surfaces of the two prepressing blocks are oppositely arranged, the first groove parts of the two prepressing blocks are configured to hot-press tab adhesives and protective films on the tab, and the first bosses of the two prepressing blocks are configured to hot-press the tab adhesives and the protective films which are positioned outside the tab in the first direction;

The hot pressing mechanism comprises two hot pressing blocks capable of relatively moving, each hot pressing block is provided with a hot pressing surface, the hot pressing surfaces are provided with a plurality of second bosses which are arranged along the first direction at intervals, a second groove part is formed between every two adjacent second bosses, the width of each second groove part is smaller than that of each tab along the first direction, the hot pressing surfaces of the two hot pressing blocks are oppositely arranged, the second groove parts of the two hot pressing blocks are configured to hot press part of tab adhesives and protective films on the tabs, and the second bosses of the two hot pressing blocks are configured to hot press two side ends of the tab tabs along the first direction and the tab adhesives and the protective films which are positioned outside the tab tabs along the first direction.

2. The battery tab thermo-compression molding device according to claim 1, further comprising a heat radiation mechanism in butt joint with the thermo-compression mechanism, wherein the heat radiation mechanism comprises a support frame, two heat sources and a placement frame, the two heat sources are movably connected to the support frame, the placement frame is movably arranged on one side of the support frame, the placement frame is configured to bear a tab group processed by the thermo-compression mechanism and move the tab group between the two heat sources, the two heat sources are respectively arranged at intervals with the tab group along the thickness direction of the tab, and the two heat sources are configured to respectively radiate heat on two sides of the tab group.

3. The battery tab thermo-compression molding apparatus of claim 1, wherein the first slot portion is contoured with the tab, and a first width W1 of the first slot portion and a width W of the tab satisfy the following relationship along the first direction: W1-W is less than or equal to 2mm and less than or equal to 4mm.

4. The battery tab thermo-compression molding apparatus of claim 3, wherein the second slot portion is contoured with the tab, and a second width W2 of the second slot portion and a width W of the tab satisfy the following relationship along the first direction: W-W2 is less than or equal to 2mm and less than or equal to 4mm.

5. The battery tab thermo-compression molding apparatus as defined in claim 1, wherein a height H1 of the first boss and a thickness H of the tab satisfy the following relationship in a protruding direction of the first boss: h1 is less than or equal to 50 percent of H.

6. The battery tab thermo-compression molding apparatus as defined in claim 5, wherein a height h2 of the second boss and a height h1 of the first boss satisfy the following relationship in a protruding direction of the second boss: h2 is less than or equal to 50 percent of h1.

7. The battery tab thermo-compression molding apparatus as defined in claim 2, wherein a distance h3 between the two heat sources and the tab group in a thickness direction of the tab satisfies the following relationship: h3 And is more than or equal to 0.5mm.

8. The battery tab thermo-compression molding apparatus of claim 1 or 2, further comprising a wobble plate mechanism interfacing with the rubberizing mechanism, the wobble plate mechanism configured to place a plurality of the tab sets.

9. The battery tab thermo-compression molding apparatus of claim 2, further comprising a film tearing mechanism in abutting engagement with the heat radiation mechanism, the film tearing mechanism configured to tear off the protective film on the tab adhesive.

10. The battery tab thermo-compression molding apparatus of claim 9, further comprising a tab glue die-cutting mechanism in abutting engagement with the film tearing mechanism, the tab glue die-cutting mechanism configured to cut tab glue between two adjacent tabs such that a plurality of tabs on the same tab glue are cut into individual tabs.

11. The battery tab thermo-compression molding apparatus of claim 10, further comprising a coding mechanism in abutting engagement with the tab glue die cutting mechanism, the coding mechanism configured to code a traceback code on the tab using a laser and scan the traceback code of the tab to record traceback code information.

12. The battery tab thermo-compression molding apparatus of claim 11, further comprising a detection mechanism in abutting engagement with the coding mechanism, the detection mechanism configured to detect the tab after the code sweep.