CN113426865B

CN113426865B - Battery tab bending device

Info

Publication number: CN113426865B
Application number: CN202110836477.3A
Authority: CN
Inventors: 赵东兴
Original assignee: Guangdong Yinuo Communication Co Ltd
Current assignee: Guangdong Yinuo Communication Co Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2023-01-03
Anticipated expiration: 2041-07-23
Also published as: CN113426865A

Abstract

The invention provides a battery tab bending device, which is characterized in that when in use, a telescopic positioning block is firstly lifted, a battery is accommodated in a battery positioning part, and the telescopic positioning block is buckled; when a pressing block of the telescopic positioning block is embedded into the tab glue accommodating groove, the edge of the pressing block is superposed with the bending line, the edge of the pressing block indicates the position of the bending line, and at the moment, the primary pressing block rotates around the bending line to bend the first tab belt for the first time; and lifting the telescopic positioning block to enable the secondary bending part to move until the edge of the secondary pressing block is superposed with the bending line, and performing secondary bending on the first polar ear band. The battery tab bending device has the advantages of accurate positioning of the bending line, one-time bending and secondary bending actions, high accuracy, repeatability in operation and improvement on working efficiency.

Description

Battery tab bending device

Technical Field

The invention belongs to the technical field of batteries, and particularly relates to a battery tab bending device.

Background

At present, polymer lithium ion batteries are increasingly used in the field of portable mobile devices due to the advantages of large capacity, good safety performance, small size and the like, and particularly, novel and compact polymer lithium ion batteries have the advantages of small self-discharge, long cycle life, no memory effect, good safety performance, light weight, large capacity, small internal resistance, low cost of assembling a pack structure and the like. Currently, new circular polymer lithium ion batteries are increasingly used in various portable mobile device fields, such as electronic pens, bluetooth headsets, electronic cigarettes, and the like.

At present, in order to assemble the pack structure, bend circular polymer lithium ion battery's utmost point ear, be an indispensable process in the whole circular polymer lithium ion battery production process, and because the requirement to polymer lithium ion battery capacity is higher and higher, this just needs the volume of increase electric core as far as possible, need bend battery utmost point ear from utmost point ear root of gluing in the equipment course of working, circular polymer lithium ion battery's utmost point ear is glued harder, be difficult for buckling, if bend by hand, then be difficult to guarantee to bend from utmost point ear root of gluing, lead to bending not in place, need artifical bending many times, cause the risk that finished product battery's length size exceeds the upper limit and utmost point ear rupture, so utmost point ear bending must use the frock of bending to bend, and must confirm the line of bending, once bend and the secondary action once accomplishes, and then raise the efficiency, reduce the defective rate.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings in the prior art, and provides a battery tab bending device which is accurate in bending line positioning, high in accuracy, repeatable in operation and capable of completing primary bending and secondary bending actions at one time and improving the working efficiency.

The invention is realized by the following technical scheme:

the battery comprises a core body, a first tab and a second tab; the first pole ear comprises a first pole ear strip and first pole ear glue, and the second pole ear comprises a second pole ear strip and second pole ear glue; one ends of the first polar ear belt and the second polar ear belt are fixed in the core body, and the other ends of the first polar ear belt and the second polar ear belt respectively extend to two ends outside the core body from the inside of the core body along the length direction of the core body; the first pole lug tape is attached to the first pole lug glue, the second pole lug tape is attached to the second pole lug glue, and the root of the first pole lug glue and the root of the second pole lug glue are respectively fixed at two ends of the core body; the battery is also provided with a bending line, and the bending line is flush with the edge of the root part of the first tab glue; a battery tab bending device comprises a battery positioning part, a telescopic positioning block, a primary bending part and a secondary bending part; the battery positioning part comprises a bottom plate, a core body accommodating groove and a lug glue accommodating groove are formed in the bottom plate, one end of the lug glue accommodating groove is communicated with the core body accommodating groove, and the other end of the lug glue accommodating groove extends to the edge of the bottom plate; the core body is placed in the core body accommodating groove, and the root of the first tab glue is placed in the tab glue accommodating groove; the bottom plate comprises a first end and a second end which are opposite along the length direction of the core body; the telescopic positioning block comprises a bending line positioning part; the bending line positioning part comprises a positioning block body and a pressing block; one end of the positioning block body is rotatably fixed at the first end of the bottom plate, the pressing block is fixed on the positioning block body in a protruding mode, the pressing block is movably embedded into the tab glue accommodating groove and abuts against the root of the tab glue, and the edge of the pressing block is overlapped with the bending line; the first bending part comprises a first pressing block, and the edge of the first pressing block is overlapped with the bending line and is rotationally fixed at the second end by taking the bending line as a central axis; when the primary pressing block rotates towards the bottom plate, the primary pressing block enables the first tab belt to be bent along the bending line and form a right angle towards the core body; the secondary bending part comprises a secondary pressing block, and the secondary pressing block is movably arranged on the primary bending part in a direction perpendicular to the bending line; and when the secondary pressing block moves towards the bottom plate to the edge of the bottom plate and is overlapped with the bending line, the secondary pressing block enables the first tab belt to be bent along the bending line and forms a right angle back to the core body.

When the battery tab bending device is used, the telescopic positioning block is firstly lifted, a battery is accommodated in the battery positioning part, and the telescopic positioning block is buckled; when a pressing block of the telescopic positioning block is embedded into the tab glue accommodating groove, the edge of the pressing block is superposed with the bending line, the edge of the pressing block indicates the position of the bending line, and at the moment, the primary pressing block rotates around the bending line to bend the first tab belt for the first time; and lifting the telescopic positioning block to enable the secondary bending part to move until the edge of the secondary pressing block is superposed with the bending line, and performing secondary bending on the first polar ear band. The battery tab bending device has the advantages of accurate positioning of the bending line, one-time bending and secondary bending actions, high accuracy, repeatability in operation and improvement on working efficiency.

Further, the telescopic positioning block further comprises a rotating part and a first elastic part; one end of the rotating part is rotatably fixed at the first end of the bottom plate, and the other end of the rotating part is connected with the positioning block body through the first elastic part; the pressing block protrusion is fixed at one end, far away from the first elastic part, of the positioning block body. The rotation part enables the telescopic positioning block to rotate a certain angle around the bottom of the bottom plate; when batteries with different sizes are bent, the first elastic part is used for adjusting the stretching length of the bending line positioning block, so that the lug is clamped in the tab glue accommodating groove, the root of the first tab glue is pressed, and the bending line is accurately positioned.

Further, the battery positioning part also comprises a battery adjusting block; the battery adjusting block is movably fixed on the bottom plate along the length direction of the core body; the battery adjusting block is provided with a lug accommodating groove, and the lug accommodating groove is matched with the second lug in shape; the tab accommodating groove is located between the core body accommodating groove and the first end of the bottom plate, and the second tab is placed in the tab accommodating groove. When batteries with different lengths are bent, the core body is accommodated in the core body accommodating groove, the other pole lug of the battery is accommodated in the pole lug accommodating groove, and the battery adjusting block is movably fixed, so that the battery accommodating space formed by the core body accommodating groove and the pole lug accommodating groove is adaptive to the length of the battery by adjusting the position where the battery adjusting block is fixed with the bottom plate.

Further, the primary bending part also comprises a guide part; the two ends of the guide part are respectively and fixedly connected with the two opposite sides of the bottom plate in a rotating way, and the primary pressing block is fixed on the guide part and corresponds to the position of the battery accommodated in the core body accommodating groove. The primary pressing block can correspond to the position of the battery in the core body accommodating groove, and the primary pressing block can accurately apply pressure to the first tab glue accommodated in the tab glue accommodating groove.

Furthermore, the battery positioning part further comprises two first gear parts, each first gear part comprises a gear part and a gear fixing block, the gear fixing blocks of the two first gear parts are respectively fixed on two sides of the second end of the bottom plate, and two ends of the guide part are respectively rotatably connected with the two first gear parts; the gear piece is protruded from the gear fixing block, and the gear piece is located at one side of the guide portion close to the bending line positioning portion. When the first tab belt is bent for the first time by the first pressing block, the first gear part limits the rotation angle of the first pressing block through the gear part, and the problem that the battery is damaged due to excessive bending of the first tab belt caused by the fact that the rotation angle of the first pressing block is too large is avoided.

Further, the primary pressing block is provided with a primary bending positioning line, and the primary bending positioning line is superposed with the edge of one side, close to the bottom plate, of the primary pressing block; a positioning hole is formed in the first gear part in a penetrating mode, and the center line of the positioning hole is overlapped with the primary bending positioning line; the first gear part is movably fixed on the bottom plate, and the center line of the positioning hole is overlapped with the bending line. The first blocking part is movably fixed, the position of the first blocking part is adjusted, the central line of the positioning hole and the bending line are in the same straight line, and then the position of one-time bending can be determined.

Furthermore, the bending line positioning part also comprises a first clamping part, and the first clamping part is fixedly connected with the positioning block body; the battery positioning part further comprises a sliding block, the sliding block is movably arranged on the bottom plate along the length direction of the core body, and the first clamping part is movably clamped with the sliding block. When the pressing block is pressed against the edge of the first tab adhesive, the sliding block can be adjusted to clamp the first clamping portion with the sliding block, and the movable range of the telescopic positioning block is limited.

Furthermore, a bending part accommodating groove is formed in the surface of one side, facing the bottom plate, of the primary bending part, and an accommodating groove opening is formed in the bending part accommodating groove and faces the primary bending line; the secondary bending part also comprises a second elastic part, two ends of the second elastic part are respectively fixed with the secondary pressing block and the primary bending part, and the secondary pressing block is movably limited in the bending part accommodating groove; the second elastic part comprises a stretching state and a contraction state and drives the secondary pressing block to reciprocate between the primary bending part and the bottom plate; the secondary pressing block is of a T-shaped structure and comprises a second clamping portion and a pressing block body, and when the second elastic portion is in a stretching state, the pressing block body penetrates out of the opening of the accommodating groove and bends the first tab belt. After the first tab belt is bent for the first time, the second elastic part is used for adjusting the stretching length of the secondary pressing block until the edge of the secondary pressing block coincides with the bending line, and the second blocking part limits the moving area of the secondary pressing block, so that the secondary pressing block is prevented from being stretched too long under the action of gravity.

Furthermore, the second stop part is step-shaped, and the secondary bending part also comprises a flat plate; the pressing block body is fixed in the middle of one side surface of the flat plate, the second blocking part comprises a step surface and a blocking surface, and the step surface is perpendicular to the blocking surface; the step surface comprises a first step surface and a second step surface which are arranged in parallel; the two second stopping parts are respectively positioned at two sides of the pressing block body, a first step surface of each second stopping part is abutted against the flat plate, and the second step surfaces are fixed with the bending part accommodating groove; the retaining surfaces comprise a first retaining surface and a second retaining surface which are arranged oppositely, when the fox-searching and pressing block body penetrates out of the opening of the accommodating groove, the first retaining surface of each second retaining part is abutted against the second retaining part, and the second retaining surface is abutted against the inner part of the accommodating groove of the bending part. The flat plate is embedded with the second blocking part, so that the moving path of the secondary bending part is limited, and the secondary bending position is more accurate.

Further, the battery positioning part, the telescopic positioning block, the primary bending part and the secondary bending part are all insulating parts. And the battery tab bending device is made of an insulating material, so that the electric conduction in the processing process is avoided.

For a better understanding and practice, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is an original state of the battery before being bent.

Fig. 2 is a schematic structural view of a battery tab bending device.

Fig. 3 is a schematic view of the structure of the battery positioning portion.

Fig. 4 is a front view of the bending line positioning portion.

Fig. 5 is a side view of the bending line positioning portion.

Fig. 6 is a partially enlarged view of a battery tab bending apparatus.

Fig. 7 is a schematic structural view of the primary press-fit block.

Fig. 8 is a schematic structural view of the secondary bending portion.

Fig. 9 is a schematic view showing a state of a battery tab bending apparatus in which a battery is placed before bending.

Fig. 10 is a schematic view showing a state of the battery tab bending apparatus completing the battery placement preparation for one-time bending.

Fig. 11 is a schematic view showing a state in which the battery tab bending apparatus performs one bending operation on the tab belt.

Fig. 12 is a schematic view showing a state in which the battery tab bending apparatus performs a secondary bending operation on the tab belt.

Fig. 13 is a schematic structural view of a battery regulating block.

Fig. 14 is a front view of the first shift position.

Fig. 15 is a front view of the slider.

Fig. 16 is a schematic structural diagram of the second stopper.

Fig. 17 is a schematic view showing a bending direction in the case where the tab band is bent once.

Fig. 18 is a schematic view showing a state after the tab belt is bent once.

Fig. 19 is a schematic view showing a state after the tab belt is bent twice.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad invention. It should be further noted that, for convenience of description, only some structures, not all structures, relating to the embodiments of the present invention are shown in the drawings.

Furthermore, the terms first, second, third and the like in the description and in the claims, are used for descriptive purposes only to distinguish one from another for purposes of description, and are not to be construed as indicating or implying relative importance or to imply that the indicated features are numbers, nor necessarily order or temporal order. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Similarly, the terms "fixed" and "connected," as used in the description and claims, are not to be construed as limited to direct connection. Thus, the expression "device a is connected to device B" should not be limited to devices or systems in which device a is directly connected to device B, meaning that there is a path between device a and device B, which may be a path including other devices or tools.

Example 1

This embodiment 1 provides a battery tab bending apparatus.

Referring to fig. 1, fig. 1 is an original state of the battery 6 before being bent, and the battery 6 includes a core 61, a first tab 62 and a second tab 63; the first tab 62 comprises a first tab strip 621 and a first tab glue 622, and the second tab 63 comprises a second tab strip 631 and a second tab glue 632; one end of each of the first polar ear band 621 and the second polar ear band 631 is fixed in the core 61, and the other end extends from the core 61 to two ends of the outside of the core 61 along the length direction thereof; the first tab tape 621 is attached to the first tab glue 622, the second tab tape 631 is attached to the second tab glue 632, and the root of the first tab glue 622 and the root of the second tab glue 632 are respectively fixed at two ends of the core body 61;

the battery 6 is also provided with a bending line 6222, and the bending line 6222 is flush with the root edge of the first tab adhesive 622;

referring to fig. 2, fig. 2 is a schematic structural view of a battery tab bending device, where the battery tab bending device includes a battery positioning portion 2, a retractable positioning block 3, a primary bending portion 4, and a secondary bending portion 5;

referring to fig. 3, fig. 3 is a schematic structural diagram of a battery positioning portion, the battery positioning portion 2 includes a bottom plate 21, the bottom plate 21 is provided with a core body accommodating groove 211 and a tab glue accommodating groove 212, one end of the tab glue accommodating groove 212 is communicated with the core body accommodating groove 211, and the other end extends to the edge of the bottom plate 21; the core 61 is placed in the core receiving groove 211, and the root of the first tab glue 622 is placed in the tab glue receiving groove 212;

the bottom plate 21 includes opposite first and second ends along the length of the core 6; the telescopic positioning block 3 comprises a bending line positioning part 31; as shown in fig. 2 and fig. 4-5, fig. 4 is a front view of the bending line positioning portion 31, fig. 5 is a side view of the bending line positioning portion, the bending line positioning portion 31 includes a positioning block body 311 and a pressing block 312, one end of the positioning block body 311 is rotatably fixed to the first end of the bottom plate 21, the pressing block 312 is convexly fixed to the positioning block body 311, the pressing block 312 is movably embedded into the tab glue accommodating groove 212 and abuts against the root of the first tab glue 622, and the edge of the pressing block 312 coincides with the bending line 6222;

fig. 6 is a partially enlarged view of the battery tab bending device, fig. 7 is a schematic structural view of a primary pressing block, and as shown in fig. 6 and 7, the primary bending portion 4 includes a primary pressing block 41, and an edge of the primary pressing block 41 coincides with a bending line 6222 and is rotatably fixed to the second end with the bending line 6222 as a central axis; when the primary pressing block 41 rotates towards the bottom plate 21, the primary pressing block 41 bends the first pole ear strap 621 along the bending line 6222 and forms a right angle 6211 towards the core 61, as shown in fig. 18;

fig. 8 is a schematic structural view of the secondary bending portion, and as shown in fig. 6 and 8, the secondary bending portion 5 includes a secondary pressing block 51, and the secondary pressing block 51 is movably disposed at the primary bending portion 4 in a direction perpendicular to the bending line; when the second pressing block 51 moves toward the bottom plate 21 to the edge and coincides with the bending line 6222, the second pressing block 51 bends the first polar ear band 621 along the bending line 6222 and forms a right angle 6212 back to the core body 61, as shown in fig. 19.

Fig. 9 is a schematic view showing a state of a battery tab bending apparatus for placing a battery before bending, fig. 10 is a schematic view showing a state of the battery tab bending apparatus for completing preparation for primary bending for placing the battery, fig. 11 is a schematic view showing a state where the battery tab bending apparatus performs a primary bending operation on the first tab tape 621, and fig. 12 is a schematic view showing a state where the battery tab bending apparatus performs a secondary bending operation on the first tab tape 621. In the battery tab bending apparatus of embodiment 1, as shown in fig. 9, in use, the retractable positioning block 3 is first lifted, and the battery 6 is accommodated in the battery positioning portion 2, as shown in fig. 10, the retractable positioning block 3 is fastened; when the pressing block 312 of the telescopic positioning block 3 is embedded into the tab glue accommodating groove 212, the edge of the pressing block 312 coincides with the bending line 6222, and the edge of the pressing block 312 is the position of the indicated bending line 6222, at this time, the primary bending portion 4 is rotated around the bending line 6222 to bend the first tab 621 for the first time, and at this time, the state of the battery tab bending device is as shown in fig. 11; the telescopic positioning block 3 is lifted up, the secondary bending portion 5 is moved until the edge of the secondary press-fit block 51 coincides with the bending line 6222, and the first tab belt 621 is bent for the second time, at which time the state of the battery tab bending apparatus is as shown in fig. 12. The battery tab bending device in the embodiment 1 has the advantages that the bending line 6222 is accurately positioned, the primary bending and the secondary bending are completed at one time, the accuracy is high, the operation is repeatable, and the working efficiency is improved.

In one embodiment, the battery tab bending device further includes a base 1, and the base 1 is fixed to the battery positioning portion 2.

Preferably, as shown in fig. 2, the retractable positioning block 3 further includes a rotating portion 32 and a first elastic portion 33; one end of the rotating part 32 is rotatably fixed at the first end of the bottom plate 21, and the rotating part 32 is connected with the positioning block body 311 through the first elastic part 33; the pressing block 312 is fixed on one end of the positioning block body 311 away from the first elastic portion 33. The rotating portion 32 enables the telescopic positioning block 3 to rotate a certain angle around the bottom of the bottom plate 21, when the batteries 6 with different sizes are bent, the first elastic portion 33 is used for adjusting the stretching length of the bending line positioning portion 31, so that the pressing block 312 is clamped in the tab glue accommodating groove 212 and abuts against the root of the first tab glue 622, and the bending line 6222 is accurately positioned.

Preferably, as shown in fig. 2 and 6, the battery positioning portion 2 further includes a battery regulation block 22; the battery adjusting block 22 is movably fixed on the bottom plate 21 along the length direction of the core body 6; the battery adjusting block 22 is provided with a tab accommodating groove, and the tab accommodating groove is adapted to the shape of the second tab 63; the tab receiving groove is located between the core body receiving groove 211 and the first end of the base plate 21, and the second tab 63 is placed in the tab receiving groove. When the batteries 6 with different lengths are bent, the core body 61 is accommodated in the core body accommodating groove 211, the second tab 63 is accommodated in the tab accommodating groove, and the battery adjusting block 22 is movably fixed, so that the battery accommodating space formed by the core body accommodating groove and the tab accommodating groove adapts to the length of the battery 6 by adjusting the fixed position of the battery adjusting block 22 and the bottom plate 21.

Fig. 13 is a schematic structural view of a battery conditioning block, in a specific embodiment, as shown in fig. 13, the tab receiving grooves include a tab glue receiving groove 222 and a tab tape receiving groove 223, the tab glue receiving groove 222 is close to the core receiving groove 211, and the tab tape receiving groove 223 is communicated with the tab glue receiving groove 222 and is located on a side far from the core receiving groove 211 of the tab glue receiving groove 222; as shown in fig. 9 and 13, the shape of the tab glue retaining groove 222 is adapted to the shape of the second tab glue 632, and the second tab glue 632 is accommodated in the tab glue retaining groove 222; the shape of the tab strip accommodating groove 223 is adapted to the shape of the second tab strip 631, and the second tab strip 631 is accommodated in the tab strip accommodating groove 223;

the battery adjusting block 22 is further provided with a third adjusting groove 224, and the third adjusting groove 224 is located on at least one side of the tab accommodating groove 223; the battery adjusting block 22 further includes a third fixing member (not shown) which is fixed to the bottom plate 21 through the third adjusting groove 224; the third fixing member is movable in the third adjustment groove 224 to adjust the position of the battery adjustment block 22 fixed to the base plate 21. When the batteries 6 with different lengths are bent, the batteries 6 are accommodated in the core body accommodating groove 211, the second tab glue 632 of the batteries 6 is accommodated in the tab glue accommodating groove 222, and the positions where the battery adjusting block 22 is fixed to the base plate 21 can be adjusted by moving the third fixing member in the third adjusting groove 224, so that the battery accommodating space formed by the core body accommodating groove 211, the tab glue accommodating groove 222 and the tab tape accommodating groove 233 is adapted to the length of the batteries 6.

Preferably, as shown in fig. 6, the first bending part 4 further includes a guide part 42; both ends of the guide portion 42 are rotatably connected to opposite sides of the bottom plate 21, respectively, and the primary press-fit block 41 is fixed to the guide portion 42 to correspond to the battery position received in the core body receiving groove 211. The primary pressing block 41 may correspond to the position of the battery 6 disposed in the core receiving groove 211, so as to ensure that the primary pressing block 41 can accurately apply pressure to the first tab glue 622 received in the tab glue receiving groove 212.

Preferably, as shown in fig. 6, the battery positioning portion 2 further includes two first blocking portions 23, each first blocking portion 23 includes a blocking member 231 and a blocking block 233, the blocking blocks 233 of the two first blocking portions 23 are respectively fixed to two sides of the second end of the bottom plate 21, and two ends of the guide portion 42 are respectively rotatably connected to the two first blocking portions 23; the blocking member 231 protrudes from the blocking fixing block 233, and the blocking member 231 is located on one side of the guide portion 42 close to the bending line positioning portion 31. When the first tab band 621 is bent by the first pressing block 41, the first blocking portion 23 limits the rotation angle of the first pressing block 41 through the blocking member 231, so as to prevent the first tab band 621 from being bent excessively to damage the battery 6 due to an excessively large rotation angle of the first pressing block 41.

Preferably, the primary pressing block 41 is provided with a primary bending positioning line 411, and the primary bending line 411 is overlapped with one side edge of the primary pressing block 41 close to the bottom plate 21; fig. 14 is a front view of the first blocking portion, and as shown in fig. 14, a positioning hole 2333 is formed through the first blocking portion 23, and a center line of the positioning hole 2333 coincides with the first bending positioning line 411 of the first pressing block 41; the first block portion 23 is movably fixed to the bottom plate 21, and the center line of the positioning hole 2333 coincides with the bending line 6222. Because the first blocking portion 23 is movably fixed, the position of the first blocking portion 23 is adjusted to enable the center line of the positioning hole 2333 and the bending line 6222 to be in the same straight line, and thus the position of the primary bending can be determined, at this time, the center line of the positioning hole 2333, the positioning line 411 of the primary bending and the bending line 6222 coincide, the tab 62 can be accurately bent by the primary pressing block 41 according to the bending line 6222, if the adjustment is not accurate, the bending position is not bent along the edge of the first tab adhesive 622, and the bending position is invalid.

In one embodiment, the first gear portion 23 further includes a first fixing member (not shown); as shown in fig. 6 and 14, the gear fixing block 233 is provided with a plurality of first adjusting grooves 234, and the first fixing member passes through the first adjusting grooves 234 and is fixed to the bottom plate 21; the first fixing member can be fixed in one of the first adjusting grooves 234, and moves in the first adjusting groove 234 to adjust the position of the gear fixing block 233 connected to the base plate 21 until the center line of the positioning hole 2333 is aligned with the bending line 6222.

Preferably, as shown in fig. 4 to 6, the bending line positioning portion 31 further includes a first positioning portion 313, and the first positioning portion 313 is fixedly connected to the positioning block body 311; as shown in fig. 6, the battery positioning portion 2 further includes a slider 24, the slider 24 is movably provided on the bottom plate 21 in the longitudinal direction of the core 6, and the first engaging portion 313 and the slider 24 are slidably engaged with each other. When the pressing block 312 is pressed against the edge of the first tab adhesive 622, the sliding block 24 can be adjusted to engage the first engaging portion 313 with the sliding block 24, so as to limit the moving range of the retractable positioning block 3.

In a specific embodiment, the sliding block 24 is fixed on one side of the bottom plate 21 and is located on one side of the first blocking portion 23 away from the front end of the bottom plate 21; as shown in fig. 15, the slider 24 is provided with a second adjusting groove 241, the second adjusting groove 241 is a strip-shaped groove and extends along the length direction of the core body, the slider 24 includes a second fixing member (not shown) which passes through the second adjusting groove 241 and is fixed with the bottom plate 21, and the slider 24 is locked and fixed between the second fixing member and the bottom plate; the second fixing member is movable in a second adjusting groove 241, which is arranged in a strip shape, so that the position of the connecting between the sliding block 24 and the bottom plate 21 can be adjusted along the length direction of the core body, and batteries with different sizes can be conveniently adapted;

FIG. 15 is a front view of the slider, and as shown in FIG. 15, the slider 24 includes a projection 242 and a slider body 243, the projection 242 being fixed to and projecting from the slider body 243; as shown in fig. 6 and 15, the protrusion 242 is located at an end of the slider body 243 away from the first stopper portion 23, and the protrusion 242, the slider body 243 and the first stopper portion 23 form an accommodating space; when the retractable positioning block 3 rotates to the upper side of the battery positioning portion 2, the first engaging portion 313 is disposed in the accommodating space and engaged with the sliding block 24.

A bending part accommodating groove 412 is formed in the surface of one side, facing the bottom plate, of the primary bending part 4, and an accommodating groove opening is formed in the bending part accommodating groove 412 and faces the primary bending positioning line 411; the secondary bending part 5 further comprises a second elastic part (not shown), two ends of the second elastic part are respectively fixed with the secondary pressing block 51 and the primary bending part 4, wherein the secondary pressing block 51 is movably limited in the bending part accommodating groove 412; the second elastic part comprises a stretching state and a contraction state and drives the secondary pressing block 51 to reciprocate between the primary bending part 4 and the bottom plate 21; the secondary pressing block 51 is a T-shaped structure, and includes a second positioning portion 511 and a pressing block body 513, wherein when the second elastic portion is in a stretching state, the pressing block body 513 penetrates through the accommodating groove opening and bends the first polar ear strap 621. After the first pole ear belt 621 finishes the first bending, the second elastic part adjusts the stretching length of the second pressing block 51 until the edge of the second pressing block 51 coincides with the bending line 6222, and the second stopper 53 limits the moving area of the second pressing block 51, so as to prevent the second pressing block 51 from stretching too long under the action of gravity.

In one specific embodiment, as shown in fig. 7, a bending portion accommodating groove 412 is formed in the middle of the primary pressing block 41;

as shown in fig. 6-8, the secondary pressing block 51 is disposed in the bending portion accommodating groove 412 and reciprocates between the primary bending portion 4 and the bottom plate 21, the second positioning portion 511 is fixed to the top end of the pressing block body 513 to form a T-shaped structure with the pressing block body 513, and the width of the second positioning portion 511 is greater than the width of the pressing block body 513; specifically, the top of the secondary press-fit block 51 is fixedly connected with the press-fit block body 513 through a tension spring.

As shown in fig. 6, the secondary bending portion 5 further includes two second positioning portions 53, the second positioning portions 53 are disposed in the bending portion accommodating groove 412, protrude from the bending portion accommodating groove 412, and are located at two ends of the pressing block body 513; the second stopper 53 and the first pressing block 41 form a bending portion sliding space, and when the second pressing block 51 adjusts the stretching length through the second elastic portion, the second positioning portion 511 moves in the bending portion sliding space.

More preferably, as shown in fig. 16, the second positioning portion 53 is step-shaped, the second bending portion 5 further includes a flat plate 54, the pressing block body 513 is fixed at the middle of one side surface of the flat plate 54, the second positioning portion 53 includes a step surface 531 and a stop surface 532, and the step surface 531 is perpendicular to the stop surface 532; the step surface 531 comprises a first step surface 5311 and a second step surface 5312 which are arranged in parallel; the two second positioning parts 53 are respectively located at two sides of the pressing block body 513, the first step surface 5311 of each second positioning part 53 abuts against the flat plate 54, and the second step surface 5312 is fixed with the bending part accommodating groove 412; the blocking surface 532 includes a first blocking surface 5321 and a second blocking surface (not shown) disposed opposite to each other, when the pressing block body 513 passes through the opening of the accommodating groove, the first blocking surface 5321 of each second blocking portion abuts against the second blocking portion, and the second blocking surface abuts against the inside of the bending portion accommodating groove 412. The fitting of the flat plate 54 and the second stopper 53 defines the movement path of the secondary bent portion 5, and the secondary bending position is more accurate.

The flat plate 54 is fixedly connected to the pressing block body 513 and the second positioning portion 511, the pressing block body 513 and the second positioning portion 511 protrude from the flat plate 54, the pressing block body 513 and the second positioning portion 511 form a second step portion 541, and the second step portions 541 are located at two ends of the pressing block body 513 and can be embedded into the step-shaped second positioning portions 53. The second stepped portion 541 and the second stopper portion are fitted to each other, so that the moving path of the second bent portion 5 is defined, and the position of the second bending is more accurate.

Preferably, the battery positioning portion 2, the retractable positioning block 3, the primary bent portion 4, and the secondary bent portion 5 are all insulating members. And the battery tab bending device is made of an insulating material, so that the electric conduction in the processing process is avoided. In a specific embodiment, since the tab adhesive 622 is hard, the guide portion 42 must be made of acrylic having greater impact resistance and hardness, otherwise the bending effect is not significant. The first elastic portion 33 is made of a steel material having a large elastic force.

In one embodiment, as shown in fig. 3, the battery positioning portion 2 is formed with two handle slots 25 respectively located at two ends of the core body receiving groove 211 and communicating with the core body receiving groove 211. The hand catching groove 25 is used for facilitating the hand to take out the battery 6.

When the battery 6 of different models or different width is bent, only the size of the core body accommodating groove 211 needs to be redesigned, other parts can still be used, the labor capacity is reduced, and the working efficiency is improved.

In the battery tab bending apparatus of embodiment 1, as shown in fig. 9, when in use, the retractable positioning block 3 is firstly lifted to accommodate the battery 6 in the battery portion 2, and at this time, the position of the battery adjusting block 2 can be adjusted by the third adjusting groove 224, so that the size of the battery 6 is adapted to the core body accommodating groove 211 and the tab glue accommodating groove 222; as shown in fig. 10, the retractable positioning block 3 is fastened, at this time, the first elastic portion 33 enables the bending line positioning portion 31 to abut against the root of the tab adhesive 622, to coincide with the bending line 6222, and the position of the slider 24 is adjusted by the second adjusting groove 241, so that the first positioning portion 313 is disposed between the slider 24 and the first positioning portion 23, and the displacement of the bending line positioning portion 31 is limited; the first pole ear strap 621 is bent for the first time by rotating the first bending portion, at this time, the position of the first blocking portion 23 is adjusted by the first adjusting groove 234, so that the center line of the positioning hole 2333 coincides with the bending line 6222, and the blocking member 231 plays a role of preventing the bending angle of the first bending portion 4 from being too large, at this time, the state of the battery tab bending device is as shown in fig. 11, fig. 17 is a schematic diagram of the bending direction of the first pole ear strap 621 during the first bending, fig. 18 is a schematic diagram of the state of the first pole ear strap 621 after the first bending, and the state of the battery 6 after the first bending is as shown in fig. 17-18; the telescopic positioning block 3 is lifted, the secondary bending part 5 is moved to bend the first pole ear band 621 for the second time, the second step part is embedded with the step-shaped second stopping part 53, so that the secondary bending part 5 moves along the embedded route, the second clamping part 511 moves in the sliding space of the bending part formed between the second stopping part 53 and the primary pressing block 41 until the edge of the secondary pressing block 521 is overlapped with the bending line 6222, and the secondary bending is performed, at this time, the state of the battery tab bending device is shown in fig. 12, fig. 19 is a schematic view of the state after the secondary bending of the first pole ear band 621, and the state of the battery 6 after the secondary bending is shown in fig. 19. The battery after the secondary bending of the battery tab bending device can further bend the first tab belt 621 upwards along the edge of the core body manually, and then enter the subsequent assembly process of the battery.

The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a battery tab bending device which characterized in that:

the battery comprises a core body, a first tab and a second tab; the first pole ear comprises a first pole ear strip and first pole ear glue, and the second pole ear comprises a second pole ear strip and second pole ear glue; one ends of the first polar ear belt and the second polar ear belt are fixed in the core body, and the other ends of the first polar ear belt and the second polar ear belt respectively extend to two ends outside the core body from the inside of the core body along the length direction of the core body; the first tab tape is attached to the first tab glue, the second tab tape is attached to the second tab glue, and the root of the first tab glue and the root of the second tab glue are respectively fixed at two ends of the core body;

the battery is also provided with a bending line, and the bending line is flush with the edge of the root part of the first tab glue;

the battery tab bending device comprises a battery positioning part, a telescopic positioning block, a primary bending part and a secondary bending part;

the battery positioning part comprises a bottom plate, the bottom plate is provided with a core body accommodating groove and a tab glue accommodating groove, one end of the tab glue accommodating groove is communicated with the core body accommodating groove, and the other end of the tab glue accommodating groove extends to the edge of the bottom plate; the core body is placed in the core body accommodating groove, and the root of the first tab glue is placed in the tab glue accommodating groove;

the bottom plate comprises a first end and a second end which are opposite along the length direction of the core body; the telescopic positioning block comprises a bending line positioning part; the bending line positioning part comprises a positioning block body and a pressing block; one end of the positioning block body is rotatably fixed at the first end of the bottom plate, the pressing block is fixed on the positioning block body in a protruding mode, the pressing block is movably embedded into the tab glue accommodating groove and abuts against the root of the first tab glue, and the edge of the pressing block is overlapped with the bending line;

the first bending part comprises a first pressing block, and the edge of the first pressing block is overlapped with the bending line and is rotationally fixed at the second end by taking the bending line as a central axis; when the primary pressing block rotates towards the bottom plate, the primary pressing block enables the first tab belt to be bent along the bending line and form a right angle towards the core body;

the secondary bending part comprises a secondary pressing block, and the secondary pressing block is movably arranged on the primary bending part in a direction perpendicular to the bending line; and when the secondary pressing block moves towards the bottom plate to the edge of the bottom plate and is overlapped with the bending line, the secondary pressing block enables the first tab belt to be bent along the bending line and forms a right angle back to the core body.

2. The battery tab bending apparatus as set forth in claim 1, wherein:

the telescopic positioning block further comprises a rotating part and a first elastic part; one end of the rotating part is rotatably fixed at the first end of the bottom plate, and the other end of the rotating part is connected with the positioning block body through the first elastic part;

the pressing block protrusion is fixed at one end, far away from the first elastic part, of the positioning block body.

3. The battery tab bending apparatus according to claim 1, wherein:

the battery positioning part also comprises a battery adjusting block; the battery adjusting block is movably fixed on the bottom plate along the length direction of the core body; the battery regulating block is provided with a lug accommodating groove, and the lug accommodating groove is matched with the second lug in shape; the tab accommodating groove is located between the core body accommodating groove and the first end of the bottom plate, and the second tab is placed in the tab accommodating groove.

4. The battery tab bending apparatus according to claim 1, wherein:

the primary bending part also comprises a guide part; two ends of the guide part are respectively and rotatably connected with two opposite sides of the bottom plate, and the primary pressing block is fixed on the guide part and corresponds to the position of the battery accommodated in the core body accommodating groove.

5. The battery tab bending apparatus according to claim 4, wherein:

the battery positioning part further comprises two first gear parts, each first gear part comprises a gear part and a gear fixing block, the gear fixing blocks of the two first gear parts are respectively fixed on two sides of the second end of the bottom plate, and two ends of the guide part are respectively rotatably connected with the two first gear parts; the gear piece is protruded from the gear fixing block, and the gear piece is located at one side of the guide portion close to the bending line positioning portion.

6. The battery tab bending apparatus according to claim 5, wherein:

the primary pressing block is provided with a primary bending positioning line, and the primary bending positioning line is superposed with the edge of one side of the primary pressing block, which is close to the bottom plate; a positioning hole penetrates through the first gear part, and the center line of the positioning hole is superposed with the primary bending positioning line; the first gear part is movably fixed on the bottom plate, and the center line of the positioning hole is overlapped with the bending line.

7. The battery tab bending apparatus according to claim 5, wherein:

the bending line positioning part also comprises a first clamping part, and the first clamping part is fixedly connected with the positioning block body; the battery positioning part further comprises a sliding block, the sliding block is movably arranged on the bottom plate along the length direction of the core body, and the first clamping part is movably clamped with the sliding block.

8. The battery tab bending apparatus according to claim 6, wherein:

a bending part accommodating groove is formed in the surface of one side, facing the bottom plate, of the primary bending part, an accommodating groove opening is formed in the bending part accommodating groove, and the accommodating groove opening is arranged facing the primary bending positioning line;

the secondary bending part also comprises a second elastic part, two ends of the second elastic part are respectively fixed with the secondary pressing block and the primary bending part, and the secondary pressing block is movably limited in the bending part accommodating groove;

the second elastic part comprises a stretching state and a contraction state and drives the secondary pressing block to reciprocate between the primary bending part and the bottom plate; the secondary pressing block is of a T-shaped structure and comprises a second clamping portion and a pressing block body, and when the second elastic portion is in a stretching state, the pressing block body penetrates out of the opening of the accommodating groove and bends the first tab belt.

9. The battery tab bending apparatus according to claim 8, wherein:

the secondary bending part also comprises two second stopping parts and a flat plate;

the pressing block body is fixed in the middle of one side surface of the flat plate, the second blocking part comprises a step surface and a blocking surface, and the step surface is perpendicular to the blocking surface; the step surface comprises a first step surface and a second step surface which are arranged in parallel; the two second blocking parts are respectively positioned at two sides of the pressing block body, a first step surface of each second blocking part is abutted against the surface of the flat plate, and the second step surfaces are fixed with the bending part accommodating groove; the blocking surfaces comprise a first blocking surface and a second blocking surface which are oppositely arranged, when the pressing block body penetrates out of the opening of the accommodating groove, the first blocking surface of each second blocking part is abutted to the second blocking part, and the second blocking surface is abutted to the inner wall of the accommodating groove of the bending part.

10. The battery tab bending apparatus according to claim 1, wherein:

the battery positioning part, the telescopic positioning block, the primary bending part and the secondary bending part are all insulating pieces.