阅读说明：本技术 电芯、折耳装置及电芯加工系统 (Battery core, ear folding device and battery core processing system ) 是由 呙德红 王军诚 邹四华 呙瑞捷 于 2021-05-13 设计创作，主要内容包括：本发明公开了一种电芯、折耳装置及电芯加工系统,涉及电池生产的技术领域。折耳装置用于折弯正极极耳和负极极耳,折耳装置包括安装底座、夹持机构、第一折弯机构和第二折弯机构；夹持机构安装于安装底座,夹持机构用于夹持本体；第一折弯机构安装于安装底座,第一折弯机构用于将正极极耳和负极极耳向本体外折弯,以形成第一弯折部和第三弯折部；第二折弯机构安装于安装底座,第二折弯机构用于将第一折弯机构折弯后的正极极耳和负极极耳朝向本体折弯,以形成第二弯折部和第四弯折部,进而使折叠段一和折叠段二靠向本体侧面,以得到电芯。本发明解决了现有技术中极耳在入壳封装时增加了蓄电池整体体积的技术问题。(The invention discloses a battery cell, a lug folding device and a battery cell processing system, and relates to the technical field of battery production. The ear bending device is used for bending the positive electrode lug and the negative electrode lug and comprises an installation base, a clamping mechanism, a first bending mechanism and a second bending mechanism; the clamping mechanism is arranged on the mounting base and is used for clamping the body; the first bending mechanism is arranged on the mounting base and used for bending the positive electrode lug and the negative electrode lug outwards the body to form a first bending part and a third bending part; the second bending mechanism is installed in the installation base, and the second bending mechanism is used for bending the positive pole lug and the negative pole lug after the first bending mechanism is bent towards the body to form a second bending part and a fourth bending part, and then the first folding section and the second folding section are close to the side face of the body to obtain the battery core. The invention solves the technical problem that the integral volume of the storage battery is increased when the lug is packaged in the shell in the prior art.)

1. The battery cell is characterized by comprising a body, a positive electrode lug and a negative electrode lug, wherein the positive electrode lug comprises a first folding section and a first extending section, the first folding section is close to the side face of the body, and the first folding section comprises a first bending part connected with the body and a second bending part connected with the first extending section; the negative pole lug comprises a second folding section and a second extending section, wherein the second folding section is close to the side face of the body, and the second folding section comprises a third bending part connected with the body and a fourth bending part connected with the second extending section;

the included angle between the first folding section and the side face of the body and the included angle between the second folding section and the side face of the body are not more than 90 degrees, the included angle between the first folding section and the first extending section is less than 180 degrees, and the included angle between the second folding section and the second extending section is less than 180 degrees.

2. A lug folding device for folding the positive electrode lug and the negative electrode lug to obtain the battery cell according to claim 1, wherein the lug folding device comprises:

installing a base;

the clamping mechanism is arranged on the mounting base and is used for clamping the body;

the first bending mechanism is arranged on the mounting base and used for bending the positive electrode lug and the negative electrode lug towards the outside of the body so as to form a first bending part and a third bending part; and

and the second bending mechanism is arranged on the mounting base and used for bending the positive pole lug and the negative pole lug which are bent by the first bending mechanism towards the body to form a second bending part and a fourth bending part, so that the first folding section and the second folding section lean against the side face of the body to obtain the battery cell.

3. The ear folding device according to claim 2, wherein: the first bending mechanism comprises a driving assembly and a first bending assembly, the driving assembly is used for driving the first bending assembly to bend the positive pole lug and the negative pole lug so as to bend the positive pole lug and the negative pole lug outwards, and therefore the first bending part and the third bending part are formed.

4. A ear folding device according to claim 3, wherein: the second bending mechanism comprises a second bending assembly and a pressing and clamping assembly, and after the positive pole lug and the negative pole lug are bent by the second bending assembly, the pressing and clamping assembly presses the first folding section and the second folding section to the body so that the first folding section and the second folding section lean against the side face of the body.

5. The ear folding device according to claim 4, wherein: the second bending assembly comprises a first clamp, a second clamp, a first rotating piece and a second rotating piece, the first clamp is connected with the first rotating piece, and the second clamp is connected with the second rotating piece;

the first clamp is used for being attached to the first extending section so as to be capable of moving relative to the first extending section under the driving of the first rotating piece, and therefore the positive electrode lug is enabled to lean against the side face of the body; the second clamp is used for being attached to the second overhanging section so as to be capable of moving relative to the second overhanging section under the driving of the second rotating piece, and further enabling the negative pole lug to lean against the side face of the body;

after the pressing and clamping assembly presses and clamps the first folding section, the second folding section and the body, the first rotating piece and the second rotating piece respectively drive the first clamp and the second clamp to reset so as to bend the first extending section and the second extending section back to form a second bending part and a fourth bending part, and therefore the battery core is obtained.

6. A ear folding device according to claim 2, 3, 4 or 5, characterized in that: the clamping mechanism comprises a transmission assembly and a clamping assembly, the clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are used for clamping the body; the transmission assembly can drive the first clamping piece and the second clamping piece to rotate so as to interchange the positions of the first clamping piece and the second clamping piece.

7. The ear folding device according to claim 2, wherein: the first bending mechanism comprises a driving assembly and a first bending assembly, and the first bending assembly comprises a first bending strip and a second bending strip;

the driving assembly comprises a first driving piece, the first driving piece is used for driving the first bending strip and the second bending strip to bend the positive pole lug and the negative pole lug so as to bend the positive pole lug and the negative pole lug outwards to form the first bending part and the third bending part.

8. The ear folding device according to claim 7, wherein: the driving assembly further comprises a second driving piece, and after the second bending mechanism rotates and bends the positive electrode tab and the negative electrode tab towards the body, the second driving piece drives the first bending strip and the second bending strip to press the first folding section and the second folding section to the body, so that the first folding section and the second folding section lean against the side face of the body; and after the first folding section, the second folding section and the body are pressed and clamped by the first folding section and the second folding section through the second bending mechanism, the first extending section and the second extending section are reset and bent back to form the second bending part and the fourth bending part, so that the battery core is obtained.

9. The utility model provides a battery core system of processing which characterized in that: comprising a ear folding device according to any one of claims 2-8.

10. The cell processing system of claim 9, wherein: the cell processing system further comprises a hot-pressing device, wherein the hot-pressing device comprises a first transmission unit, a second transmission unit, a third transmission unit, a hot-pressing mechanism and a detection mechanism; the first transmission unit is used for transmitting the body after ear folding of the ear folding device to the hot pressing mechanism for hot pressing treatment so as to eliminate air in the body, the second transmission unit is used for transmitting the body after treatment of the hot pressing mechanism to the detection mechanism for detection, and the third transmission unit is used for transmitting the body after detection of the detection mechanism to a waste box or the next procedure.

Technical Field

The invention relates to the technical field of battery production, in particular to a battery cell, a lug folding device and a battery cell processing system.

Background

The battery is a device capable of generating electric energy, such as a storage battery widely applied in different fields at present, and is a secondary battery, such as a lithium ion battery in a mobile phone, a notebook computer and the like. In the production process of battery, the battery generally includes the body and the anodal utmost point ear and the negative pole utmost point ear of drawing forth from the position that the body is different, because draw forth from the position of difference makes anodal utmost point ear and negative pole utmost point ear not be on same plane, and the battery is convenient for going into the shell encapsulation, need buckle anodal utmost point ear and negative pole utmost point ear.

Along with the increasingly strict requirements of electronic terminal equipment such as mobile phones, flat plates and the like on the overall dimension and the capacity of batteries, the purposes that the size of the batteries is as small as possible and the capacity of the batteries cannot be influenced are achieved, and the conventional storage battery has the disadvantages that the length of the bent positive electrode lug and the bent negative electrode lug is too long, the size of the packaged storage battery is increased to a certain extent, and the size of the electronic terminal equipment is further influenced.

Disclosure of Invention

In view of this, the invention provides a battery cell, a tab folding device and a battery cell processing system, which are used for solving the technical problem that the overall volume of a storage battery is increased when a tab is packaged in a shell in the prior art.

An electric core comprises a body, a positive electrode lug and a negative electrode lug, wherein the positive electrode lug comprises a first folding section and a first extending section, the first folding section is close to the side face of the body, and comprises a first bending part connected with the body and a second bending part connected with the first extending section; the negative pole lug comprises a second folding section and a second extending section, wherein the second folding section is close to the side face of the body, and the second folding section comprises a third bending part connected with the body and a fourth bending part connected with the second extending section; the included angle between the first folding section and the side face of the body and the included angle between the second folding section and the side face of the body are not more than 90 degrees, the included angle between the first folding section and the first extending section is less than 180 degrees, and the included angle between the second folding section and the second extending section is less than 180 degrees.

An ear folding device is used for folding the positive electrode tab and the negative electrode tab to obtain the battery cell in the above embodiment:

installing a base;

the clamping mechanism is arranged on the mounting base and is used for clamping the body;

the first bending mechanism is arranged on the mounting base and used for bending the positive electrode lug and the negative electrode lug towards the outside of the body so as to form a first bending part and a third bending part; and

and the second bending mechanism is arranged on the mounting base and used for bending the positive pole lug and the negative pole lug which are bent by the first bending mechanism towards the body to form a second bending part and a fourth bending part, so that the first folding section and the second folding section lean against the side face of the body to obtain the battery cell.

In some embodiments of the tab folding device, the first bending mechanism includes a driving component and a first bending component, and the driving component is configured to drive the first bending component to bend the positive electrode tab and the negative electrode tab so as to bend the positive electrode tab and the negative electrode tab outward from the body, thereby forming the first bending portion and the third bending portion.

In some embodiments of the ear folding device, the second bending mechanism includes a second bending assembly and a pressing and clamping assembly, and after the positive electrode tab and the negative electrode tab are bent by the second bending assembly, the pressing and clamping assembly presses the first folding section and the second folding section toward the body, so that the first folding section and the second folding section are close to the side face of the body.

In some embodiments of the ear folding device, the second folding assembly comprises a first clip, a second clip, a first rotating member, and a second rotating member, the first clip being coupled to the first rotating member, the second clip being coupled to the second rotating member;

the first clamp is used for being attached to the first extending section so as to be capable of moving relative to the first extending section under the driving of the first rotating piece, and therefore the positive electrode lug is enabled to lean against the side face of the body; the second clamp is used for being attached to the second overhanging section so as to be capable of moving relative to the second overhanging section under the driving of the second rotating piece, and further enabling the negative pole lug to lean against the side face of the body;

after the pressing and clamping assembly presses and clamps the first folding section, the second folding section and the body, the first rotating piece and the second rotating piece respectively drive the first clamp and the second clamp to reset so as to bend the first extending section and the second extending section back to form a second bending part and a fourth bending part, and therefore the battery core is obtained.

In some embodiments of the ear folding device, the clamping mechanism comprises a transport assembly and a clamping assembly, the clamping assembly comprising a first clamping member and a second clamping member for clamping the body; the transmission assembly can drive the first clamping piece and the second clamping piece to rotate so as to interchange the positions of the first clamping piece and the second clamping piece.

In some embodiments of the ear folding device, the first bending mechanism comprises a drive assembly and a first bending assembly, the first bending assembly comprising a first bending bar one and a second bending bar;

the driving assembly comprises a first driving piece, and the first driving piece is used for driving the first bending strip and the second bending strip to bend the positive electrode lug and the negative electrode lug so as to bend the positive electrode lug and the negative electrode lug outside the body to form a first bending part and a third bending part;

in some embodiments of the ear bending device, the driving assembly further includes a second driving element, after the second bending mechanism rotates and bends the positive electrode tab and the negative electrode tab towards the body, the second driving element drives the first bending strip and the second bending strip to press the first folding section and the second folding section towards the body, so that the first folding section and the second folding section lean against the side face of the body; and after the first folding section, the second folding section and the body are pressed and clamped by the first folding section and the second folding section through the second bending mechanism, the first extending section and the second extending section are reset and bent back to form the second bending part and the fourth bending part, so that the battery core is obtained.

A battery cell processing system comprises any one of the ear folding devices.

In some embodiments of the battery cell processing system, the battery cell processing system further includes a hot-pressing device, and the hot-pressing device includes a first transmission unit, a second transmission unit, a third transmission unit, a hot-pressing mechanism, and a detection mechanism; the first transmission unit is used for transmitting the body after ear folding of the ear folding device to the hot pressing mechanism for hot pressing treatment so as to eliminate air in the body, the second transmission unit is used for transmitting the body after treatment of the hot pressing mechanism to the detection mechanism for detection, and the third transmission unit is used for transmitting the body after detection of the detection mechanism to a waste box or the next procedure.

The embodiment of the invention has the following beneficial effects:

the ear bending device and the battery cell processing system comprise a clamping mechanism, a first bending mechanism and a second bending mechanism, wherein the body is clamped through the clamping mechanism so that the first bending mechanism can bend the lug on the body for the first time, and the first bending mechanism bends the lug and then bends the lug again through the second bending mechanism so as to form the second bending part and the fourth bending part, so that the first folding section and the second folding section lean against the body to obtain the battery cell. The lug folding device and the battery cell processing system can fold the lug for multiple times so as to meet the requirements of a client on the bending degree and the shape of the lug after bending, and the obtained battery cell can reduce the volume occupied by the lug in the encapsulation of the storage battery shell, further reduce the volume of the storage battery after encapsulation of the storage battery shell and reduce the volume occupied by the storage battery in the electronic terminal equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of a cell processing system in one embodiment;

fig. 2 is a schematic view of another view structure of the cell processing system shown in fig. 1;

fig. 3 is a schematic view of another view structure of the cell processing system shown in fig. 1;

fig. 4 is a schematic overall structure diagram of a cell processing system in another embodiment;

fig. 5 is a schematic diagram illustrating shape change of a cell tab.

Wherein: 1-1, a clamping mechanism; 11-1, a transmission component; 12-1, a clamping assembly; 121-1, a first clamping piece; 122-1, a second clamping piece; 2-1, a first bending mechanism; 21-1, a driving component; 211-1, a first driving member; 212-1, a second drive member; 22-1, a first bending assembly; 3-1, a second bending mechanism; 31-1, a second bending assembly; 311-1, a first clip; 312-1, a first rotating member; 313-1, a second clip; 314-1, a second rotating member; 32-1, a compression assembly;

1-2, a clamping mechanism; 2-2, a first bending mechanism; 21-2, a driving component; 211-2, a first driving member; 212-2, a second drive member; 22-2, a first bending assembly; 221-2, bending the first strip; 222-2 and a second bending strip; 3-2, a second bending mechanism;

4. a hot pressing device; 41. a first transmission unit; 42. a second transmission unit; 43. a third transmission unit; 44. a hot-pressing mechanism; 441. an upper pressing assembly; 442. pressing the assembly; 443. a first heat insulation plate; 444. a second heat insulation plate; 45. a detection mechanism; 5. a waste box; 6. installing a base; 71. a body; 72. a positive electrode tab; 721. a first folding section; 7211. a first bent portion; 7212. a second bent portion; 722. a first extending section; 73. a negative electrode tab; 731. a second folding section; 7311. a third bent portion; 7312. a fourth bent portion; 732. and a second extending section.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. 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. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Along with the increasingly strict requirements of electronic terminal equipment such as mobile phones, flat plates and the like on the overall dimension and the capacity of batteries, the purposes that the size of the batteries is as small as possible and the capacity of the batteries cannot be influenced are achieved, and the conventional storage battery has the disadvantages that the length of the bent positive electrode lug and the bent negative electrode lug is too long, the size of the packaged storage battery is increased to a certain extent, and the size of the electronic terminal equipment is further influenced.

In view of the above, the tab folding device and the battery cell processing system in the embodiment of the invention clamp the body through the clamping mechanism, so that the tab on the body is bent for the first time by the first bending mechanism, and the tab is bent again through the second bending mechanism after being bent by the first bending mechanism, so as to form the second bending portion and the fourth bending portion, and further, the first folding section and the second folding section are close to the body, so as to obtain the battery cell. The lug folding device and the battery cell processing system can fold the lug for multiple times so as to meet the requirements of a client on the bending degree and the shape of the lug after bending, and the obtained battery cell can reduce the volume occupied by the lug in the encapsulation of the storage battery shell, further reduce the volume occupied by the storage battery in the encapsulation of the storage battery shell, and further reduce the volume occupied by the storage battery in the electronic terminal equipment, thereby solving the technical problems.

The invention discloses a structure of a battery cell, as shown in fig. 5, the battery cell comprises a body 71, a positive electrode tab 72 and a negative electrode tab 73, the positive electrode tab 72 comprises a first folding section 721 and a first extending section 722 which are close to the side surface of the body 71, the first folding section 721 comprises a first bending part 7211 connected with the body 71, and a second bending part 7212 connected with the first extending section 722; the negative electrode tab 73 includes a second folded portion 731 and a second extended portion 732, which are close to the side of the main body 71, and the second folded portion 731 includes a third bent portion 7311 connected to the main body 71 and a fourth bent portion 7312 connected to the second extended portion 732. The included angle between the first folding section 721 and the second folding section 731 and the body 71 is less than or equal to 90 degrees, the included angle between the first folding section 721 and the first extending section 722 is less than 180 degrees, and the included angle between the second folding section 731 and the second extending section 732 is less than 180 degrees.

The positive electrode tab 72 and the negative electrode tab 73 of the battery cell are provided with a plurality of bending parts formed by bending by the tab bending device, so that the first folding section 721 and the second folding section 731 are close to the side surface of the body 71, the lengths of the positive electrode tab 72 and the negative electrode tab 73 can be shortened, and the volume of the battery after packaging is further reduced.

Preferably, the included angle between the first folding section 721 and the second folding section 731 and the side surface of the body 71 is 0 °, that is, the first folding section 721 and the second folding section 731 are attached to the body 71; the first folding portion 721 is perpendicular to the first extending portion 722, and the second folding portion 731 is perpendicular to the second extending portion 732, i.e. the L-shape shown in the last drawing of fig. 5. The consistency of the battery core can be improved, and subsequent welding and other procedures are facilitated.

In an embodiment of the ear bending device, as shown in fig. 1-3 and 5, the ear bending device comprises a mounting base 6, a clamping mechanism 1-1, a first bending mechanism 2-1 and a second bending mechanism 3-1; the clamping mechanism 1-1, the first bending mechanism 2-1 and the second bending mechanism 3-1 are arranged on the mounting base 6, and the clamping mechanism 1-1 is used for clamping the body 71; the first bending mechanism 2-1 is configured to bend the positive electrode tab 72 and the negative electrode tab 73 outward of the body 71 to form a first bent portion 7211 and a third bent portion 7311; the second bending mechanism 3-1 is configured to bend the positive electrode tab 72 and the negative electrode tab 73 bent by the first bending mechanism 2-1 toward the body 71 to form a second bent portion 7212 and a fourth bent portion 7312, so that the first folding section 721 and the second folding section 731 are close to the side surface of the body 71 to obtain the battery cell.

In this embodiment, the tab folding device is clamped on the body 71 through the clamping mechanism 1-1, and the tab on the body 71 can be bent for multiple times by matching the first bending mechanism 2-1 and the second bending mechanism 3-1, and the tab portion is bent to be attached to the body 71, so as to reduce the size of the occupied volume of the tab when the tab is packaged in a shell, and further achieve the purpose of reducing the size of the occupied volume of the storage battery in the electronic terminal equipment.

In a specific embodiment, the clamping mechanism 1-1 comprises a conveying assembly 11-1 and a clamping assembly 12-1, the clamping assembly 12-1 is used for clamping the body 71, the conveying assembly 11-1 is connected with the clamping assembly 12-1, and the conveying assembly 11-1 is used for driving the clamping assembly 12-1 to reciprocate between the first bending mechanism 2-1 and the second bending mechanism 3-1.

In this embodiment, the clamping assembly 12-1, which clamps the body 71, is transferred from a position corresponding to the first bending mechanism 2-1 to a position corresponding to the second bending mechanism 3-1 through the transmission assembly 11-1, and can reciprocate to enable the first bending mechanism 2-1 and the second bending mechanism 3-1 to stably bend the tab.

In a further embodiment of the above-described embodiment, clamping assembly 12-1 includes a first clamping member 121-1 and a second clamping member 122-1, first clamping member 121-1 and second clamping member 122-1 for clamping body 71; the transmission assembly 11-1 can drive the first clamping member 121-1 and the second clamping member 122-1 to rotate, so that the first clamping member 121-1 and the second clamping member 122-1 can be interchanged in position.

In this embodiment, specifically, the driving force source of the transmission assembly 11-1 is a driving motor, a U-shaped block is fixedly installed at an end portion of an output shaft of the driving motor, the U-shaped block has an axisymmetric structure and an opening deviating from the driving motor, so that the middle portion of the U-shaped block is connected to the output shaft of the driving motor, a first clamping member 121-1 and a second clamping member 122-1 are respectively installed at two ends of the U-shaped block, rotation of the driving motor drives the U-shaped block to rotate, thereby enabling the first clamping member 121-1 and the second clamping member 122-1 to rotate 180 degrees to overlap, when in use, after a battery cell tab clamped on the first clamping member 121-1 is bent by the first bending mechanism 2-1, positions of the first clamping member 121-1 and the second clamping member 122-1 are exchanged by rotation, so as to transmit the first clamping member 121-1 to the second bending mechanism 3-1, carrying out bending operation again; the second clamping member 122-1 can also clamp a new body 71, so that the ear folding efficiency of the ear folding device is improved.

In other embodiments, the first bending mechanism 2-1 includes a driving assembly 21-1 and a first bending assembly 22-1, and the driving assembly 21-1 is configured to drive the first bending assembly 22-1 to bend the positive tab 72 and the negative tab 73 so as to bend the positive tab 72 and the negative tab 73 outward from the body 71, thereby forming a first bent portion 7211 and a third bent portion 7311.

In this embodiment, as shown in fig. 5, which is a schematic structural diagram of a battery cell, in an initial state, a positive tab 72 and a negative tab 73 on a body 71 extend perpendicularly to an end surface of the body 71, and the positive tab 72 and the negative tab 73 are spread outward from the body 71 by the first bending assembly 22-1 of the present invention, preferably, the positive tab 72 and the negative tab 73 are spread to be flat with the end surface connected to the body 71, that is, the positive tab 72 and the negative tab 73 are located on the same plane.

Specifically, the driving assembly 21-1 includes a first driving member 211-1 and a second driving member 212-1, the first driving member 211-1 is used for driving the second driving member 212-1 to approach the body 71, the first driving member 211-1 can be a driving motor, a linear driving module, and the like, an output end of the first driving member 211-1 is connected to a mounting plate, a guiding member can be disposed below the mounting plate, the guiding member can be a sliding rail, a sliding chute, and the like, the second driving member 212-1 is mounted on an upper surface of the mounting plate to be capable of being driven by the first driving member 211-1 to move, the second driving member 212-1 can be a linear module, the first bending assembly 22-1 is mounted at a position of the mounting plate corresponding to an output end of the second driving member 212-1, the first bending assembly 22-1 includes two bending units and a guide rail, when the bending mechanism is used, the end part of the bending unit is pressed against the body 71 by the driving of the first driving piece 211-1, then the two bending units in the folded state are opened by the second driving piece 212-1, the bending units move towards two sides to flatten the positive electrode tab 72 and the negative electrode tab 73 on two sides of the body 71 to complete the first bending, and a first bending part 7211 and a third bending part 7311 are formed, compared with the prior art, the embodiment improves the stability of the first bending mechanism 2-1 by a multi-stage driving mode, the automation degree is high, and the efficiency of ear folding can be accelerated.

In a further embodiment, the second bending mechanism 3-1 includes a second bending assembly 31-1 and a pressing and clamping assembly 32-1, and after the positive electrode tab 72 and the negative electrode tab 73 are bent by the second bending assembly 31-1, the pressing and clamping assembly 32-1 presses the positive electrode tab 72 and the negative electrode tab 73 partially toward the side of the body 71, so that the first folding section 721 and the second folding section 731 are pressed against the side of the body 71.

In a further embodiment of the above embodiment, the second bending assembly 31-1 comprises a first clamp 311-1, a second clamp 313-1, a first rotating member 312-1 and a second rotating member 314-1, wherein the first clamp 311-1 is connected with the first rotating member 312-1, and the second clamp 313-1 is connected with the second rotating member 314-1;

the first clamp 311-1 is used for attaching the first overhanging section 722 so as to be capable of moving relative to the first overhanging section 722 under the driving of the first rotating element 312-1, and further enabling the positive electrode tab 72 to lean against the side surface of the body 71; the second clamp 313-1 is used for jointing the second overhanging section 732 so as to be capable of moving relative to the second overhanging section 732 under the driving of the second rotating piece 314-1, and further enabling the negative pole tab 73 to lean against the side surface of the body 71;

after the first rotating part 312-1 and the second rotating part 314-1 clamp the first folded section 721, the second folded section 731 and the body 71 by the clamping component 32-1, the first clamp 311-1 and the second clamp 313-1 are respectively driven to reset so as to bend back the first extended section 722 and the second extended section 732, and form a second bent part 7212 and a fourth bent part 7312, thereby obtaining the battery cell.

In the two embodiments, the second bending mechanism 3-1 bends the positive electrode tab 72 and the negative electrode tab 73 for the second time in a rotary bending manner, after the positive electrode tab 72 and the negative electrode tab 73 are supported by the first bending mechanism 2-1, the clamping assembly 12-1 is conveyed to the position of the second bending mechanism 3-1 in a turning or conveying manner of the conveying assembly 11-1, the first clamp 311-1 and the second clamp 313-1 are respectively attached to the first overhanging section 722 and the second overhanging section 732, and then the first clamp 311-1 and the second clamp 313-1 are rotated under the driving of the first rotating member 312-1 and the second rotating member 314-1, so that the first overhanging section 722 and the second overhanging section 732 can be bent towards the body 71 to achieve the purpose of bending the positive electrode tab 72 and the negative electrode 73 for the second time, wherein the bending direction of the tabs is close to the body 71, and then the first folding section 721 and the second folding section 731 are pressed and attached to the body 71 through the pressing clamp assembly 32-1, so that the overall occupied space of the positive electrode tab 72 and the negative electrode tab 73 can be reduced.

The first rotating member 312-1 and the second rotating member 314-1 are provided with a reset function, after the first folding section 721 and the second folding section 731 are completely pressed to the side of the body 71 by the pressing and clamping assembly 32-1, a pressing and attaching completion signal can be transmitted to the first rotating member 312-1 and the second rotating member 314-1 in a communication mode, and after the first rotating member 312-1 and the second rotating member 314-1 receive the signal, the first clamp 311-1 and the second clamp 313-1 are driven to rotate so as to drive the first overhanging section 722 and the second overhanging section 732 to be bent back, preferably in an L shape as shown in the third sub-figure in fig. 5, so that the requirement of a client on the polar ear shape is met, and the effect of further reducing the volume is achieved.

Specifically, the first clamp 311-1 and the second clamp 313-1 are mechanical clamps, can clamp the first overhanging section 722 and the second overhanging section 732, have small clamping force, can move relative to the first overhanging section 722 and the second overhanging section 732 in the process of rotating the first clamp 311-1 and the second clamp 313-1, and form a shape of a Chinese character 'ba' when the first clamp 311-1 and the second clamp 313-1 rotate for the first time, so that the positive electrode tab 72 and the negative electrode tab 73 can be close to the side surface of the body 71, the angle between the positive electrode tab 72 and the negative electrode tab 73 and the body 71 can be reduced to an acute angle from 90 degrees, the first folding section 721 and the second folding section 731 can be conveniently attached to the side surface of the body 71 by the pressing clamp assembly 32-1, and preferably the first folding section 721 and the second folding section 731 can be attached to the body 71.

In another embodiment, shown in connection with fig. 1-5, first bending mechanism 2-2 comprises a drive assembly 21-2 and a first bending assembly 22-2, and first bending assembly 22-2 comprises a first bending bar 221-2 and a second bending bar 222-2; the driving assembly 21-2 comprises a first driving member 211-2, and the first driving member 211-2 is used for driving the first bending strip 221-2 and the second bending strip 222-2 to bend the positive electrode tab 72 and the negative electrode tab 73, so as to bend the positive electrode tab 72 and the negative electrode tab 73 outward of the body 71, and form a first bending portion 7211 and a third bending portion 7311.

The driving assembly 21-2 further comprises a second driving element 212-2, after the second bending mechanism 3-2 rotates and bends the positive electrode tab 72 and the negative electrode tab 73 towards the body 71, the second driving element 212-2 drives the first bending strip 221-2 and the second bending strip 222-2 to press the first folding section 721 and the second folding section 731 to the side surface of the body 71, so that the first folding section 721 and the second folding section 731 lean against the side surface of the body 71; after the first bending strip 221-2 and the second bending strip 222-2 press and clamp the first folding section 721, the second folding section 731 and the body 71, the second bending mechanism 3-2 resets the first bending overhanging section 722 and the second bending overhanging section 732 to form a second bending part 7212 and a fourth bending part 7312, so as to obtain the battery cell.

The above embodiment provides a technical solution different from the previous embodiment, and more specifically, the technical solution is different from the previous embodiment in the structure of the clamping mechanism 1-2, the structure and the installation position of the second bending mechanism 3-2, and the change of the operation mode of the first bending mechanism 2-2.

The following is a detailed description: in the embodiment, the transmission assembly 11-1 is eliminated from the structural components of the clamping mechanism 1-2, and the clamping mechanism 1-2 is only used for clamping the body 71; in the embodiment, because the transmission assembly 11-1 is not arranged, the second bending mechanisms 3-2 are arranged on two sides of the clamping mechanism 1-2, so that the positive electrode tab 72 and the negative electrode tab 73 can be bent again after the positive electrode tab 72 and the negative electrode tab 73 are bent by the first bending mechanisms 2-2, the transmission steps of the transmission assembly 11-1 are reduced, and the structure of the integral ear bending device is more compact; in addition, the pressing and clamping assembly 32-1 is eliminated from the structural composition of the second bending mechanism 3-2, and the function of the pressing and clamping assembly 32-1 is realized by the first bending mechanism 2-2. Third, in the present embodiment, the first bending mechanism 2-2 includes a driving assembly 21-2 and a first bending assembly 22-2, the driving assembly 21-2 includes a first driving member 211-2 and a second driving member 212-2, the first bending assembly 22-2 includes a first bending strip 221-2 and a second bending strip 222-2, the driving assembly 21-2 and the first bending assembly 22-2 have the same structure as the driving assembly 21-1 and the first bending assembly 22-1 in the above embodiment, and the change is that after the second driving member 212-2 drives the first bending strip 221-2 and the second bending strip 222-2 to flatten the positive tab 72 and the negative tab 73, the second bending mechanism 3-2 bends the positive tab 72 and the negative tab 73 into a "eight" shape again, the first driving piece 211-2 drives the first bending strip 221-2 and the second bending strip 222-2 to move towards the direction of the body 71, and the second driving piece 212-2 achieves the effect of attaching the first folding section 721 and the second folding section 731 on the body 71 by opening and closing the first bending strip 221-2 and the second bending strip 222-2, so as to replace the press clamping assembly 32-1.

The embodiment provides a new implementation mode, so that the overall structure of the ear folding device is more compact, the overall size of the ear folding device is reduced, and the effects of optimizing the structure, improving the working efficiency and reducing the energy consumption are achieved by removing partial structures.

The invention further provides a battery cell processing system which comprises the ear folding device in any one of the embodiments.

In other embodiments, as shown in fig. 1 to 4, the battery cell processing system further includes a hot-pressing device 4, where the hot-pressing device 4 includes a first transmission unit 41, a second transmission unit 42, a third transmission unit 43, a hot-pressing mechanism 44, and a detection mechanism 45; the first transmission unit 41 is used for transmitting the body 71 bent by the second bending mechanism to the hot-pressing mechanism 44 for hot-pressing treatment so as to eliminate air in the body 71, the second transmission unit 42 is used for transmitting the body 71 treated by the hot-pressing mechanism 44 to the detection mechanism 45 for detection, and the third transmission unit 43 is used for transmitting the body 71 detected by the detection mechanism 45 to the waste box 5 or the next process.

In this embodiment, the hot press apparatus 4 includes a first transmission unit 41, a second transmission unit 42, and a third transmission unit 43, three mechanical claws are mounted on a connection plate, the connection plate can be driven by a motor to rotate to achieve the transmission effect, and the working principle of the mechanical claws is the same as that of the second driving member, the first bending strip 221-2, and the second bending strip 222-2, so as to achieve the clamping function. The hot pressing mechanism 44 includes an upper pressing assembly 441 and a lower pressing assembly 442, the first transmission unit 41 transmits the bent body 71 to the lower pressing assembly 442, the upper pressing assembly 441 can move the position of the upper pressing assembly 441 through a transverse module and a longitudinal module, and the pressing column on the upper pressing assembly 441 is matched with the lower pressing assembly 442 to perform hot pressing on the battery cell, so as to eliminate air inside the battery cell.

In addition, in other embodiments, on the connection seats of the upper and lower pressing assemblies 441 and 442, a first and second heat insulation plate 443 and 444 are provided to prevent excessive temperature from damaging other mechanisms.

The hot pressing device 4 and the ear folding device are both arranged on an installation base 6, the installation base 6 can be of a rectangular plate structure to support the hot pressing device 4 and the ear folding device, and the waste box 5 is arranged on the side edge of the installation base 6 close to the detection mechanism 45, so that when the detection mechanism 45 fails to detect, waste is thrown into the waste box 5 through the third transmission unit 43.

The lug folding device and the battery cell processing system of the invention can unfold the positive electrode lug 72 and the negative electrode lug 73 to be flat with the end surface of the body 71 by explaining with the battery cell structure shown in fig. 5 when the lugs are folded for the first time, namely, the positive electrode lug 72 and the negative electrode lug 73 are arranged along the radial direction of the body 71, then the positive electrode lug 72 and the negative electrode lug 73 are folded for the second time to be in a splayed structure, the folding section I721 and the folding section II 731 are attached to the body 71 through the clamp, and the extending section I722 and the extending section II 732 are bent back again, so that the extending section I722 and the extending section II 732 are arranged along the radial direction of the body 71 and form an L-shaped lug shape with the folding section I721 and the folding section II 731, thereby reducing the occupied volume of the lugs.

In addition, the ear folding device and the battery cell processing system of the invention can bend the ear of the main body 71 towards the main body 71, thereby forming the shape structure as shown in fig. 5, and can prevent the end parts of the first overhanging section 722 and the second overhanging section 732 far away from the main body 71 from warping to a height exceeding the end surface of the main body 71, thereby preventing the raw materials of the later process from being punctured, and not affecting the quality of the whole product.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.