CN210607444U - Battery core pre-folding tab device - Google Patents

Abstract

The application discloses utmost point ear device is rolled over in advance to electric core. Electric core is rolled over utmost point ear device in advance, including mounting panel, location hold-down mechanism and the mechanism of bending, the mounting panel is located to location hold-down mechanism, and location hold-down mechanism is used for supporting and fixes a position electric core body. The bending mechanism is arranged on the mounting plate and used for bending the lug and the top cover pin. The application provides a technical scheme can bend utmost point ear and top cap pin accurately, and the protection electricity core body does not receive the harm.

Description

Battery core pre-folding tab device

Technical Field

The application relates to the technical field of battery cells, in particular to a battery cell pre-folding lug device.

Background

The tab is an important component of the lithium ion battery cell, the tab is a metal conductor which leads out the positive electrode and the negative electrode from the cell, namely a contact point of the battery during charging and discharging, in the production process, a film needs to be adhered to the tab so as to prevent short circuit between a metal belt and an aluminum plastic film during battery packaging, the tab is sealed and adhered with the aluminum plastic film through heating during packaging so as to prevent leakage, and a bending process needs to be carried out after the film is adhered.

However, the conventional bending device cannot ensure the bending precision of the tab, cannot bend the top cover pin, and can damage the cell body during the bending action.

SUMMERY OF THE UTILITY MODEL

The application provides a utmost point ear device is rolled over in advance to electric core, and utmost point ear and top cap pin can be bent accurately to electric core ear of rolling over in advance utmost point ear device, and protect electric core body.

The application provides a utmost point ear device is rolled over in advance to electric core, including mounting panel, location hold-down mechanism and the mechanism of bending, the mounting panel is located to location hold-down mechanism, and location hold-down mechanism is used for supporting and fixes a position electric core body. The bending mechanism is arranged on the mounting plate and used for bending the lug and the top cover pin.

In the above-mentioned scheme, an electric core is rolled over utmost point ear device in advance is provided, and electric core is rolled over utmost point ear device in advance and can be bent utmost point ear and top cap pin accurately. The battery cell pre-bending lug device comprises a mounting plate, a positioning and pressing mechanism and a bending mechanism, wherein the positioning and pressing mechanism and the bending mechanism are arranged on the mounting plate, after a jig carrying a battery cell is in place, the positioning and pressing mechanism supports against and positions the battery cell body, and the bending mechanism bends a lug and a top cover pin of the battery cell. Because when the action of bending is carried out or before, the cell body is positioned and fixed, so that the action of the bending mechanism can not cause damage to the cell body, the deviation of the cell body is avoided, the bending precision of the cell lug and the top cover pin is influenced, and the bending precision of the lug is ensured.

In one possible implementation, the positioning and pressing mechanism includes:

the pressing assembly is used for abutting against the surface of the battery cell and arranged on the mounting plate;

the end positioning assembly is used for abutting against the end part of the battery cell and is arranged on the mounting plate; and the top cover positioning assembly is used for abutting against the top cover of the battery core and is arranged on the mounting plate.

In the above scheme, a specific structure of the positioning and pressing mechanism is provided, and the positioning and pressing mechanism comprises a pressing assembly, an end positioning assembly and a top cover positioning assembly. Compress tightly subassembly, tip locating component and top cap locating component and be used for the butt respectively in the top cap of the tip of electric core and electric core in the surface of electric core. When utmost point ear and top cap pin bend, compress tightly subassembly, tip locating component and top cap locating component and can be to the surface of electric core, the top cap butt of electric core to avoid the mechanism of bending when bending the action, the load of bending causes the injury to electric core body, and has guaranteed the precision of bending of utmost point ear and top cap pin.

Optionally, in a possible implementation manner, the pressing assembly includes a pressing driving mechanism and a pressing portion, the pressing driving mechanism is disposed on the mounting plate, and drives the pressing portion to move along the thickness direction of the electric core, so that the pressing portion abuts against or is away from the upper surface of the electric core.

Optionally, in a possible implementation manner, the end positioning assembly includes an end positioning block and a first positioning driving mechanism, the first positioning driving mechanism is disposed on the mounting plate, and drives the end positioning block to move along the width direction of the battery core, so as to enable the back of the end positioning block to abut against or be away from the end of the battery core.

Optionally, in a possible implementation manner, the positioning and pressing mechanism further includes an abutting positioning assembly, the abutting positioning assembly includes an abutting driving mechanism and an abutting block, the abutting driving mechanism is disposed on the mounting plate, and the abutting block is driven to move along the length direction of the electric core so as to abut against or be away from the front surface of the end positioning block.

Optionally, in a possible implementation manner, the front surface of the end positioning block is formed with a positioning step, and the abutting block abuts against the positioning step under the driving of the abutting driving mechanism.

Optionally, in a possible implementation manner, the top cover positioning assembly includes a top cover positioning block and a second positioning driving mechanism, the second positioning driving mechanism is disposed on the mounting plate, and drives the top cover positioning block to move along the thickness direction of the battery core, so as to enable the top cover positioning block to abut against or be away from the top cover of the battery core.

Optionally, in a possible implementation manner, the bending mechanism includes a bending assembly and a bending driving mechanism, and the bending driving mechanism is disposed on the mounting plate and drives the bending assembly to bend the tab and the top cover pin.

Optionally, in a possible implementation manner, the cell pre-folding tab device further includes a leveling mechanism, the leveling mechanism includes a leveling driving mechanism and a leveling block, the leveling driving mechanism is disposed on the mounting plate and drives the leveling block to move along the length direction of the cell so as to abut against or be away from the bent tab and the top cover pin.

Optionally, in a possible implementation manner, the battery cell pre-folding tab device further includes a base and a moving driving mechanism, and the mounting plate is slidably disposed on the base and is driven by the moving driving mechanism.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic perspective view of a cell pre-folded tab device in this embodiment at a first viewing angle;

fig. 2 is a schematic perspective view of the battery cell pre-folded tab device in this embodiment at a second viewing angle;

fig. 3 shows a schematic structural diagram of a cell in the present embodiment;

FIG. 4 is an enlarged view taken at IV in FIG. 1;

FIG. 5 is an enlarged view of the point V in FIG. 1;

fig. 6 is an enlarged view taken at vi in fig. 1.

Icon: 10-pre-folding a lug device for a battery cell; 11-a mounting plate; 11 a-enclosing a connecting plate; 12-positioning and pressing mechanism;

13-a bending mechanism; 13 a-upper tab bending assembly; 13 b-lower tab bending component; 131-a first bending cylinder; 132-first rollover; 132 a-a first bracket; 132 b-a first roller; 133-a second bend cylinder; 134-second roll-fold; 134 a-a second bracket; 134 b-a second roller;

14-a base; 140-a slide rail; 15-a movement drive mechanism;

16-a leveling mechanism; 160-a leveling drive mechanism; 161-flattening block;

20-a hold-down assembly; 21-a down-pressure drive mechanism; 22-a press-down part;

30-an end positioning assembly; 31-end positioning block; 32-a first positioning drive mechanism; 33-a middle plate; 310-elongated holes; 330-a chute; 331-screw hole; 90-positioning steps;

40-a cap positioning assembly; 41-a top cover positioning block; 42-a second positioning drive mechanism; 410-positioning grooves;

50-an abutment locating assembly; 51-an abutment drive mechanism; 52-abutment block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The technical solution in the present application will be described below with reference to the accompanying drawings.

This embodiment provides a utmost point ear device 10 is rolled over in advance to electric core, and utmost point ear and top cap pin are bent to electric core ear device 10 is rolled over in advance to electric core, and can protect electric core body.

Referring to fig. 1 and fig. 2, fig. 1 shows a three-dimensional structure of the cell pre-folded tab device 10 in the present embodiment at a first viewing angle, and fig. 2 shows a three-dimensional structure of the cell pre-folded tab device 10 in the present embodiment at a second viewing angle.

The cell pre-bending tab device 10 includes an installation plate 11, a positioning and pressing mechanism 12, and a bending mechanism 13.

The positioning and pressing mechanism 12 is arranged on the mounting plate 11, and the positioning and pressing mechanism 12 is used for abutting against and positioning the battery cell body. The bending mechanism 13 is disposed on the mounting plate 11 and used for bending the tab and the top cover pin.

Wherein, electric core is rolled over utmost point ear device 10 in advance and can be bent utmost point ear and top cap pin accurately. The cell pre-bending tab device 10 comprises an installation plate 11, a positioning and pressing mechanism 12 and a bending mechanism 13, wherein the positioning and pressing mechanism 12 and the bending mechanism 13 are arranged on the installation plate 11, when a jig carrying a cell is in place, the positioning and pressing mechanism 12 abuts against and positions the cell body, and the bending mechanism 13 bends tabs and top cover pins of the cell. Because when the action of bending is carried out or before, the cell body is positioned, the action of the bending mechanism 13 can not influence the cell body, the deviation of the cell body is avoided, the bending precision of the lug and the top cover pin is influenced, and the bending precision of the lug and the top cover pin is ensured.

Alternatively, in one possible implementation, the positioning and pressing mechanism 12 includes a pressing assembly 20, an end positioning assembly 30, and a top cover positioning assembly 40, which are respectively disposed on the mounting plate 11.

Compress tightly subassembly 20 and be used for butt electric core surface, tip locating component 30 is used for butt electric core tip, and top cap locating component 40 is used for butt electric core top cap.

For clarity, please refer to fig. 3, and fig. 3 shows a schematic diagram of a battery cell in this embodiment.

When utmost point ear and top cap pin bend, compress tightly subassembly 20, tip locating component 30 and top cap locating component 40 and can be to the top cap butt of electric core, electric core tip and electric core to avoid bending mechanism 13 when bending electric core, the load of bending causes the injury to electric core body, and has guaranteed the precision of bending of electric core.

Fig. 3 shows the positions of the compressing assembly 20, the end positioning assembly 30 and the top cover positioning assembly 40 acting on the battery cell respectively, and the specific positions will be described below.

It should be noted that, in the action flow of one possible implementation:

when the jig carrying the battery core is in place (i.e. reaches the pre-tab folding device 10 of the battery core), the pressing assembly 20 works, abuts against the surface of the battery core, and clamps the battery core body together with the jig;

the end positioning assembly 30 works to abut against the end of the battery cell, namely between the upper and lower tabs of the battery cell;

the top cover positioning assembly 40 works and abuts against the top cover of the battery cell;

and the bending mechanism 13 works to bend the lug of the battery cell and the pin of the top cover.

Wherein, utmost point ear and top cap pin are when being bent, compress tightly subassembly 20 and can guarantee that electric core is in stable state, and tip locating component 30 can guarantee that electric core tip is not harmd by the load of bending, and top cap locating component 40 work can guarantee that the top cap can not become flexible, avoids bad product to produce.

Alternatively, in one possible implementation, please refer to fig. 1, the pressing assembly 20 includes a pressing driving mechanism 21 and a pressing part 22, the pressing driving mechanism 21 is disposed on the mounting plate 11, and drives the pressing part 22 to move along the thickness direction of the battery cell, so as to enable the pressing part 22 to abut against or be away from the upper surface of the battery cell.

Fig. 3 shows the lower surface a of the cell, and the pressing portion 22 functions as a surface opposite to a surface shown in fig. 3. Fig. 3 shows the thickness direction of the cell.

It should be noted that, since the lower surface of the battery cell is supported by the jig, the battery cell can be stably positioned and supported by abutting against the upper surface of the battery cell in the embodiment.

In this embodiment, the pressing driving mechanism 21 is an air cylinder, and in other embodiments, the driving mechanism of the pressing assembly 20 may also be other devices capable of outputting linear motion, for example, a linear module is used to replace the pressing driving mechanism 21.

In one possible implementation, the end positioning assembly 30 includes an end positioning block 31 and a first positioning driving mechanism 32, the first positioning driving mechanism 32 is disposed on the mounting plate 11, and drives the end positioning block 31 to move along the width direction of the battery cell, so as to enable the back surface of the end positioning block 31 to abut against or be away from the end of the battery cell.

The end of the cell is located on the tab side of the pre-bent cell, and the back surface of the end positioning block 31 is attached to and abutted against the end of the cell.

Fig. 3 shows that the end positioning block 31 abuts against the end B of the battery cell, and shows the width direction of the battery cell.

Meanwhile, please refer to fig. 1, the end positioning assembly 30 further includes an intermediate plate 33, the intermediate plate 33 is connected to the driving end of the first positioning driving mechanism 32 and the end positioning block 31, wherein the end positioning block 31 is adjustably disposed on the intermediate plate 33, so that the stroke of the end positioning block 31 is adjusted by adjusting the position of the end positioning block 31 to meet different types of battery cells.

It should be noted that the intermediate plate 33 is provided with a sliding slot 330, the bottom of the sliding slot 330 is provided with a plurality of screw holes 331, the end positioning block 31 is slidably disposed in the sliding slot 330, and the end positioning block 31 is formed with a long hole 310, and the end positioning block 31 is disposed through the long hole 310 and is matched with the screw holes 331 by a bolt, and the end positioning block 31 is in sliding fit with the sliding slot 330, so that the position adjustable relationship between the end positioning block 31 and the intermediate plate 33 can be realized.

The first positioning driving mechanism 32 is an air cylinder, and in other embodiments, the first positioning driving mechanism 32 may be another driving device capable of outputting linear motion.

Referring to fig. 1 and 2, the positioning and pressing mechanism 12 further includes an abutting positioning assembly 50, the abutting positioning assembly 50 includes an abutting driving mechanism 51 and an abutting block 52 (see fig. 4), the abutting driving mechanism 51 is disposed on the mounting plate 11, and the abutting block 52 is driven to move along the length direction of the battery cell so as to abut against or be away from the front surface of the end positioning block 31.

It should be noted that fig. 3 shows the length direction of the battery cell.

When the end positioning assembly 30 is operated and abuts against the end of the battery cell, the abutting positioning assembly 50 is operated, and the abutting block 52 is driven to the front side of the end positioning block 31 through the abutting driving mechanism 51, so that the end positioning block 31 abuts against the end of the battery cell, and the bending precision of the upper and lower tabs is ensured.

In the present embodiment, the abutment driving mechanism 51 is an air cylinder, and in other embodiments, the abutment driving mechanism 51 may be another device capable of outputting a linear motion.

Optionally, in one possible implementation, please refer to fig. 4, and fig. 4 is an enlarged view of fig. 1 at iv.

A positioning step 90 is formed on the front surface of the end positioning block 31, and the abutment block 52 abuts against the positioning step 90 by being driven by the abutment driving mechanism 51. Wherein, through setting up location step 90, can make butt piece 52 can accurate butt in tip locating piece 31, and the butt is effectual.

Optionally, in a possible implementation manner, referring to fig. 1 and fig. 2, the cap positioning assembly 40 includes a cap positioning block 41 and a second positioning driving mechanism 42, the second positioning driving mechanism 42 is disposed on the mounting plate 11, and drives the cap positioning block 41 to move along the thickness direction of the battery cell, so as to enable the cap positioning block 41 to abut against or be away from the cap of the battery cell.

The number of the top cover positioning blocks 41 is two, the second positioning driving mechanism 42 is a bidirectional cylinder, and the bidirectional cylinder drives the two top cover positioning blocks 41 to move in opposite directions so as to clamp or separate the top cover tabs of the battery cell.

Fig. 3 shows the header tab C abutted by the header positioning block 41.

Referring to fig. 5, fig. 5 is an enlarged view of v in fig. 1.

The adjacent wall surfaces of the two header positioning blocks 41 are formed with positioning grooves 410 for abutting against the header tabs.

It should be noted that, in the present embodiment, the two top cover positioning blocks 41 are driven by one bidirectional cylinder, in other specific embodiments, the two top cover positioning blocks 41 may be driven by one driving device, for example, the two top cover positioning blocks 41 are driven by one cylinder, which can also achieve the effect of clamping or disengaging the top cover tab.

Alternatively, in one possible implementation, the bending mechanism 13 includes a bending assembly and a bending driving mechanism, and the bending driving mechanism is disposed on the mounting plate 11 and drives the bending assembly to bend the tab and the header pin.

The bending assembly comprises an upper tab bending assembly 13a and a lower tab bending assembly 13b, and the bending driving mechanism comprises a first bending cylinder 131 and a second bending cylinder 133.

Upper tab bending assembly 13a includes a first roll fold 132 and lower tab bending assembly 13b includes a second roll fold 134.

The first bending cylinder 131 is arranged on the mounting plate 11 and drives the first rolling cylinder 132 to bend the upper tab of the battery cell and the upper pin of the top cover, and the second bending cylinder 133 is arranged on the mounting plate 11 and drives the second rolling cylinder 134 to bend the lower tab of the battery cell and the lower pin of the top cover.

In fig. 3, upper tab and header pin D and upper tab and header pin F are shown.

The first bending cylinder 131 drives the first rolling element 132 to move along the thickness direction of the battery cell, and the first rolling element 132 is located above the upper tab when not driven, and moves downwards to roll and bend the upper tab (the tab at the upper end) of the battery cell. The second bending cylinder 133 drives the second rolling element 134 to move along the thickness direction of the battery cell, and the second rolling element 134 is located below the upper tab when not driven, and moves upward to roll and bend the lower tab (the tab at the lower end) of the battery cell.

Wherein, for simplifying the space, the mounting panel 11 is provided with a surrounding connecting plate 11a, the surrounding connecting plate 11a surrounds the cylinder body of the first bending cylinder 131, and the cylinder body of the pressing-down driving mechanism 21 is fixed on the surrounding connecting plate 11 a.

Please refer to fig. 6, wherein fig. 6 is an enlarged view of vi in fig. 1.

The first roll 132 includes a first support 132a and a first roll 132b, the first support 132a is disposed at an execution end of the first bending cylinder 131, the first roll 132b is rotatably disposed on the first support 132a, and the first roll 132b is used for roll bending the upper tab and the top cover pin. The second roll 134 includes a second bracket 134a and a second roll 134b, the second bracket 134a is disposed at an execution end of the second bending cylinder 133, the second roll 134b is rotatably disposed on the second bracket 134a, and the second roll 134b is used for roll bending the lower tab and the top cover pin.

Optionally, in one possible implementation, the cell pre-folding tab device 10 further includes a leveling mechanism 16, the leveling mechanism 16 includes a leveling driving mechanism 160 and a leveling block 161, the leveling driving mechanism 160 is disposed on the mounting plate 11 and drives the leveling block 161 to move along the length direction of the cell so as to abut against or be away from the bent tab and the top cover pin.

It should be noted that, in the action flow of one possible implementation:

when the jig carrying the battery core is in place (i.e. reaches the pre-tab folding device 10 of the battery core), the pressing assembly 20 works, abuts against the surface of the battery core, and clamps the battery core body together with the jig;

the end positioning assembly 30 works and abuts against the end of the battery core;

the top cover positioning assembly 40 works and abuts against the top cover of the battery cell;

the abutting positioning component 50 works and abuts against the end positioning block 31;

the bending mechanism 13 works to respectively bend the upper and lower tabs of the battery cell and the corresponding top cover pins;

the flattening mechanism 16 works to flatten the bent tab and the bent pin of the top cover, so that the consistency of the battery cell product is ensured.

Please refer to fig. 1 and fig. 2 again, the cell pre-folding tab apparatus 10 further includes a base 14 and a moving driving mechanism 15, and the mounting plate 11 is slidably disposed on the base 14 and driven by the moving driving mechanism 15.

In the present embodiment, the movement driving mechanism 15 is an air cylinder, and in other embodiments, the movement driving mechanism 15 may be another driving device capable of outputting linear motion, such as a linear module.

The base 14 is provided with two parallel slide rails 140, and the lower end of the mounting plate 11 is provided with a slide block matched with the slide rails 140, so that the mounting plate 11 slides on the base 14 through the driving of the movable driving mechanism 15, and after a jig carrying an electric core is in place, the movable driving mechanism 15 drives the mounting plate 11 to be close to the electric core, and the positioning and pressing mechanism 12 and the bending mechanism 13 can start to work.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a utmost point ear device is rolled over in advance to electric core which characterized in that includes:

mounting a plate;

the positioning and pressing mechanism is arranged on the mounting plate and used for abutting against and positioning the battery cell body; and

and the bending mechanism is used for bending the lug and the top cover pin and is arranged on the mounting plate.

2. The cell pre-folded tab device of claim 1,

the positioning and pressing mechanism comprises:

the pressing assembly is used for abutting against the surface of the battery cell and is arranged on the mounting plate;

the end positioning assembly is used for abutting against the end part of the battery cell and is arranged on the mounting plate; and

a top cap locating component for butt electric core top cap, top cap locating component locates the mounting panel.

3. The cell pre-folded tab device of claim 2,

compress tightly the subassembly and include pushing down actuating mechanism and push down the portion, push down actuating mechanism locates the mounting panel, and the drive push down the portion and remove along the thickness direction of electric core, be used for making the upper surface of pressing down the portion butt or keeping away from electric core.

4. The cell pre-folded tab device of claim 2,

the end positioning assembly comprises an end positioning block and a first positioning driving mechanism, the first positioning driving mechanism is arranged on the mounting plate and drives the end positioning block to move along the width direction of the battery cell, and the back of the end positioning block is abutted to or far away from the end of the battery cell.

5. The cell pre-folded tab device of claim 4,

the positioning and pressing mechanism further comprises a butt positioning assembly, the butt positioning assembly comprises a butt driving mechanism and a butt block, the butt driving mechanism is arranged on the mounting plate and drives the butt block to move along the length direction of the battery cell so as to abut against or keep away from the front face of the end positioning block.

6. The cell pre-folded tab device of claim 5,

the front surface of the end positioning block is provided with a positioning step, and the abutting block is abutted to the positioning step under the driving of the abutting driving mechanism.

7. The cell pre-folded tab device of claim 2,

the top cover positioning assembly comprises a top cover positioning block and a second positioning driving mechanism, the second positioning driving mechanism is arranged on the mounting plate and drives the top cover positioning block to move along the thickness direction of the battery cell, and the top cover positioning block is abutted to or far away from the top cover of the battery cell.

8. The cell pre-folded tab device of claim 1,

the bending mechanism comprises a bending assembly and a bending driving mechanism, the bending driving mechanism is arranged on the mounting plate and drives the bending assembly to bend the lug and the top cover pin.

9. The cell pre-folded tab device of claim 1,

the electric core pre-bending lug device further comprises a leveling mechanism, the leveling mechanism comprises a leveling driving mechanism and a leveling block, the leveling driving mechanism is arranged on the mounting plate and drives the leveling block to move along the length direction of the electric core so as to lean against or keep away from bent lugs and top cover pins.

10. The cell pre-folded tab device of claim 1,

the electric core pre-folding lug device further comprises a base and a moving driving mechanism, wherein the mounting plate is slidably arranged on the base and is driven by the moving driving mechanism.

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