CN217641452U

CN217641452U - Internal stay mechanism, electric core unloader and winder

Info

Publication number: CN217641452U
Application number: CN202221468268.4U
Authority: CN
Inventors: 刘家龙
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-21
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses internal stay mechanism, electric core unloader and winder, relate to electric core production technical field, in the time of the actual operation, the inside back of electric core is taken out to the book needle, two impeller retractions are in order pressing close to internal stay piece, make the transverse dimension of whole internal stay mechanism minimum, make internal stay piece drive the inside that two impeller entering electric core under actuating mechanism's drive after that, then make two impeller stretch out in order to keep away from internal stay piece, stretch electric core, carry out the pre-compaction operation again, the pre-compaction operation is accomplished the back and can be made internal stay piece drive two impeller under actuating mechanism's drive and withdraw from the inside of electric core. Wherein, because in the pre-compaction operation process, interior support piece is inside electric core, consequently interior support piece can play the effect of supporting electric core inner circle, can reduce the internal stress that pre-compaction operation in-process electric core produced to the phenomenon that the inner circle pole piece of electric core that above-mentioned process obtained produced the fold can be alleviateed.

Description

Internal stay mechanism, electric core unloader and winder

Technical Field

The utility model belongs to the technical field of the electric core production technique and specifically relates to an internal stay mechanism, electric core unloader and winder are related to.

Background

With the continuous development of the battery industry, the quality requirement on the battery core is higher and higher. The battery core is generally formed by winding a winding needle of a winding device, and then the battery core on the winding needle is blanked by using a battery core blanking device, namely, the winding needle is drawn out from an inner cavity of the battery core. Generally, after the book needle was taken out, need utilize two cylinder barred bodies to inject inside electric core to back of the body motion is in order to stretch electric core, then withdraws from electric core inside these two cylinder barred bodies, so that follow-up carry out the pre-compaction operation to electric core, however, this kind of operation mode can make the pole piece of electric core inner circle appear easily and produce the phenomenon of fold.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an internal stay mechanism, electric core unloader and coiler alleviate the phenomenon that the pole piece of electric core inner circle produced the fold.

In a first aspect, the utility model provides an internal stay mechanism, internal stay mechanism includes:

the inner supporting piece is connected with the driving mechanism and driven by the driving mechanism to enter or exit from the interior of the battery cell;

the two pushing pieces are respectively connected to two sides of the inner supporting piece and can enter or exit from the interior of the battery cell along with the inner supporting piece, and the two pushing pieces can move towards or away from each other.

In an optional embodiment, the inner supporting mechanism further includes an elastic member and a pulling member, the two pushing members are respectively connected to two sides of the inner supporting member in a sliding manner, the elastic member is abutted between each pushing member and the inner supporting member, the two elastic members are used for providing elastic acting force for making the two pushing members move back to back, and the pulling member is used for pulling the two pushing members to move towards each other.

In an optional implementation manner, the inner supporting member is provided with a sliding track penetrating through two sides of the inner supporting member, the pushing member includes a pushing portion and a sliding portion, the sliding portion is in sliding fit with the sliding track, one end of the sliding portion extends out of the sliding track to be connected with the pushing portion, the elastic member abuts between the pushing portion and the inner supporting member, the two elastic members are used for providing elastic acting force for enabling the two pushing portions to move back and forth, and the pulling member is connected with the two sliding portions and used for pulling the two sliding portions to move in opposite directions.

In optional embodiment, the elastic component is tubulose, the promotion portion orientation the surface of interior support piece is equipped with first annular, first annular surround in the outer peripheral edges of sliding part, interior support piece orientation the surface of promotion portion is equipped with the second annular, the second annular surround in the orbital outer peripheral edges of sliding, the both ends of elastic component support respectively hold in first annular with the diapire of second annular.

In an optional implementation manner, a traction track communicated with the sliding track is arranged in the middle of the inner supporting piece, the pulling piece includes two pulling ropes and a driving portion, the driving portion is arranged corresponding to the traction track, one end of each of the two pulling ropes is connected with the driving portion, the other end of each of the two pulling ropes is connected to one end of each of the two sliding portions, which is far away from the pushing portion, respectively, and the two pulling ropes can pull the two sliding portions to move in opposite directions under the driving of the driving portion.

In an optional implementation manner, the pulling member further includes two rollers, the two rollers are disposed on the sliding rail and located on two sides of a communication position between the traction rail and the sliding rail, a circumferential side surface of the roller is provided with a circumferentially surrounding groove, and the two pulling ropes are respectively pressed in the two grooves.

In an alternative embodiment, the surface of the sliding portion is mirror-finished.

In a second aspect, the utility model provides an electricity core unloader, including actuating mechanism and any one of the aforesaid embodiment the interior mechanism that props, actuating mechanism with interior support piece is connected, is used for the drive interior support piece gets into or withdraws from the inside of electric core.

In an optional embodiment, the driving mechanism includes a driving member and two connecting members, the two connecting members are arranged in parallel, and the driving member is connected with the inner supporting member through the two connecting members, so that the two connecting members drive the inner supporting member to enter or exit from the interior of the battery cell.

A third aspect of the present invention provides a winding machine, which comprises the above-mentioned embodiments.

The utility model discloses internal stay mechanism, electric core unloader and winder, in the time of the actual operation, the inside back of electric core is taken out to the book needle, two impeller retractions are in order to press close to interior support piece, make whole internal stay mechanism's horizontal size minimum, support piece drives the inside that two impeller entering electric core under actuating mechanism's drive in making after that, then make two impeller stretch out and support piece in order keeping away from, stretch electric core, carry out the pre-compaction operation again, support piece can make after the pre-compaction operation is accomplished and drive the inside that two impeller exited from electric core under actuating mechanism's drive. Wherein, because in the pre-compaction operation process, interior support piece is inside electric core, consequently interior support piece can play the effect of supporting electric core inner circle, can reduce the internal stress that pre-compaction operation in-process electric core produced to the phenomenon that the inner circle pole piece of electric core that above-mentioned process obtained produced the fold can be alleviateed.

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

FIG. 1 is a schematic view of a combination structure of an inner supporting mechanism and a connecting member according to an embodiment of the present invention;

fig. 2 is a schematic view of the usage state of the internal bracing mechanism.

An icon: 110-an inner strut; 111-a glide track; 112-a second ring groove; 113-a traction track; 120-a pusher; 121-a pushing part; 122-a sliding part; 123-a first ring groove; 130-a resilient member; 140-a pull rope; 141-a drive section; 142-a roller; 143-sliding tube; 210-connecting element.

Detailed Description

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

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

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 or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Before the embodiment of the present invention is described, a brief description is first made on the electric core blanking device in the prior art. The battery cell blanking device in the prior art generally comprises two cylindrical rod bodies which are transversely arranged in parallel at intervals. In actual use, the battery core is wound on the winding needle, and the winding needle is provided with grooves on two lateral sides respectively, and the grooves extend along the axial direction of the winding needle. When the battery cell on the winding needle needs to be blanked, the two cylindrical rod bodies are respectively inserted into the two grooves, then the winding needle is drawn out from the interior of the battery cell, and then the two cylindrical rod bodies move transversely and oppositely and are far away from each other so as to stretch the battery cell. After electric core stretching finishes, two cylinder barred bodies withdraw from the inside of electric core, make prepressing mechanism press to electric core along with descending, with the electric core pre-compaction again, carry out the pre-compaction operation, make prepressing mechanism lifting at last keep away from electric core, withdraw from the pre-compaction operation.

However, after long-term research, the inventors of the present application found that, since there is no internal support inside the battery cell during the pre-pressing operation, after the battery cell exits the pre-pressing operation, the phenomenon that the pole piece of the inner ring wrinkles due to internal stress release of the battery cell easily occurs.

The inventor has proposed following embodiment after the research, through the internal stay mechanism that plays the internal stay effect inside electric core when carrying out the pre-compaction operation to improved pole piece fold phenomenon, below combine the figure, do the detailed description to some embodiments of the utility model. It should be noted that the features of the following embodiments and examples may be combined with each other without conflict.

Combine fig. 1 and fig. 2, the embodiment of the utility model provides an electricity core unloader, this electricity core unloader include actuating mechanism and internal stay mechanism, and actuating mechanism is used for driving internal stay mechanism and gets into or withdraw from the inside of electric core, and wherein, owing to roll up the needle and withdraw from behind the inside of electric core, electric core this moment is hollow cylindric, therefore actuating mechanism is the drive internal stay mechanism along the axial displacement of electric core to get into or withdraw from the inside of electric core.

The inner support mechanism comprises an inner support 110 and two pushing members 120, wherein the inner support 110 is used for being connected with a driving mechanism so as to enter or exit the interior of the battery cell under the driving of the driving mechanism. The two pushing members 120 are respectively connected to two sides of the inner support 110, and can enter or exit from the interior of the battery cell along with the inner support 110, wherein the two pushing members 120 can move toward or away from each other.

From this, when the actual operation, the book needle takes the inside back of electric core out, two impeller 120 retractions are in order to press close to interior support piece 110, make whole interior horizontal size that props the mechanism minimum, make interior support piece 110 drive the inside that two impeller 120 got into electric core under actuating mechanism's drive after that, then make two impeller 120 stretch out in order keeping away from interior support piece 110, with electric core tensile, carry out the pre-compaction operation again, can make interior support piece 110 drive the inside that two impeller 120 exited from electric core under actuating mechanism's drive after the pre-compaction operation is accomplished. Because the internal supporting piece 110 is arranged inside the battery cell in the pre-pressing operation process, the internal supporting piece 110 can play a role in supporting the inner ring of the battery cell, and can reduce the internal stress generated by the battery cell in the pre-pressing operation process, so that the phenomenon that the inner ring pole piece of the battery cell obtained in the process generates wrinkles can be reduced.

In this embodiment, the driving mechanism includes a driving member and two connecting members 210, the two connecting members 210 are disposed in parallel, the driving member includes but is not limited to a motor, an oil cylinder and an air cylinder, and the driving member is connected to the inner supporting member 110 through the two connecting members 210, so as to drive the inner supporting member 110 to enter or exit from the inside of the battery cell through the two connecting members 210. Wherein, the two connecting pieces 210 are positioned between the two pushing pieces 120, and the two connecting pieces 210 and the two pushing pieces 120 are arranged at a spacing in the transverse direction.

The inner supporting mechanism further comprises an elastic member 130 and a pulling member, the two pushing members 120 are respectively connected to two sides of the inner supporting member 110 in a sliding manner, the elastic member 130 is abutted between each pushing member 120 and the inner supporting member 110, the two elastic members 130 are used for providing elastic acting force for enabling the two pushing members 120 to move back to back, and the pulling member is used for pulling the two pushing members 120 to move towards each other.

Therefore, after the winding needle is drawn out of the interior of the electric core, the two pushing pieces 120 are pulled by the pulling piece to move in opposite directions, the elastic piece 130 is compressed at the same time to be close to the inner supporting piece 110, then the driving piece is used for driving the inner supporting piece 110 through the two connecting pieces 210, so that the inner supporting piece 110 and the two pushing pieces 120 enter the interior of the electric core, then the acting force of the pulling piece on the two pushing pieces 120 is released, the two elastic pieces 130 are released to apply elastic acting force on the two pushing pieces 120 respectively, the two pushing pieces 120 move back to be far away from the inner supporting piece 110, the electric core is stretched, the pre-pressing operation can be directly performed after the stretching operation is finished, the pulling piece is used for pulling the two pushing pieces 120 to move in opposite directions after the pre-pressing operation is finished, the elastic pieces 130 are compressed again to be close to the inner supporting piece 110, and then the inner supporting piece 110 and the two pushing pieces 120 can conveniently exit from the interior of the electric core.

The surface of the sliding part 122 is subjected to mirror polishing treatment, so that the surface of the sliding part 122 is smooth, and the sliding part is easy to exit from the inside of the battery cell.

In this embodiment, the inner support member 110 is provided with a sliding track 111 penetrating through two sides of the inner support member, the pushing member 120 includes a pushing portion 121 and a sliding portion 122, the sliding portion 122 is slidably fitted on the sliding track 111, and one end of the sliding portion extends out of the sliding track 111 to be connected with the pushing portion 121, the elastic member 130 abuts between the pushing portion 121 and the inner support member 110, the two elastic members 130 are used for providing an elastic force for moving the two pushing portions 121 away from each other, and the pulling member is connected with the two sliding portions 122 and is used for pulling the two sliding portions 122 to move towards each other, so as to realize the opposite or opposite movement of the two pushing members 120.

The elastic member 130 is tubular, and may be a spring, the surface of the pushing portion 121 facing the inner supporting member 110 is provided with a first annular groove 123, the first annular groove 123 surrounds the outer periphery of the sliding portion 122, the surface of the inner supporting member 110 facing the pushing portion 121 is provided with a second annular groove 112, the second annular groove 112 surrounds the outer periphery of the sliding track 111, and two ends of the elastic member 130 respectively abut against the bottom walls of the first annular groove 123 and the second annular groove 112.

The middle part of the inner support 110 is provided with a traction track 113 communicated with the sliding track 111, the traction track 113 is located between the two connecting pieces 210, the pulling piece comprises two pulling ropes 140 and a driving part 141, the driving part 141 is arranged corresponding to the traction track 113, one end of each of the two pulling ropes 140 is connected with the driving part 141, the other end of each of the two pulling ropes 140 is respectively connected to one end of each of the two sliding parts 122 far away from the pushing part 121, wherein the two pulling ropes 140 can pull the two sliding parts 122 to move towards each other under the driving of the driving part 141.

The pulling member further includes two rollers 142, the two rollers 142 are disposed on the sliding rail 111 and located at two sides of the communication position between the traction rail 113 and the sliding rail 111, the circumferential side surface of the rollers 142 has a circumferentially surrounding groove, and the two pull ropes 140 are respectively pressed in the two grooves to reduce the friction between the pull ropes 140 and the inner supporting member 110.

The pulling member further includes a sliding tube 143, one end of the sliding tube 143 is fixed to the traction rail 113, and the other end of the sliding tube 143 extends outward, and the driving portion 141 may be a slider, which is slidably disposed in the sliding tube 143 and connected to a power source such as a motor, a cylinder, an oil cylinder, and an electric push rod, so as to move in the sliding tube 143, and thus pull the two pushing members 120 through the two pulling ropes 140.

The embodiment of the utility model provides a still provide a winder, this winder includes foretell electric core unloader, structure and corresponding beneficial effect that it has.

To sum up, the utility model discloses internal stay mechanism, electric core unloader and coiler, when the actual operation, the inside back of electric core is taken out to the book needle, two impeller 120 withdrawal are in order to press close to internal stay piece 110, make the horizontal size of whole internal stay mechanism minimum, make internal stay piece 110 drive the inside that two impeller 120 got into electric core under actuating mechanism's drive after that, then make two impeller 120 stretch out in order to keep away from internal stay piece 110, stretch electric core, carry out the pre-compaction operation again, can make internal stay piece 110 drive two impeller 120 and withdraw from the inside of electric core under actuating mechanism's drive after the pre-compaction operation is accomplished. Because the internal supporting member 110 is inside the battery cell during the pre-pressing operation, the internal supporting member 110 can support the inner ring of the battery cell, and the internal stress generated by the battery cell during the pre-pressing operation can be reduced, so that the phenomenon that the inner ring pole piece of the battery cell obtained during the above process generates wrinkles can be reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An internal stay mechanism, characterized in that, internal stay mechanism includes:

the inner supporting piece is connected with the driving mechanism and driven by the driving mechanism to enter or exit the interior of the battery cell;

the two pushing pieces are respectively connected to two sides of the inner supporting piece and can enter or exit from the interior of the battery cell along with the inner supporting piece, and the two pushing pieces can move in the opposite direction or in the opposite direction.

2. The inner support mechanism according to claim 1, further comprising an elastic member and a pulling member, wherein two pushing members are respectively slidably connected to two sides of the inner support member, the elastic member is abutted between each pushing member and the inner support member, the two elastic members are used for providing elastic force for moving the two pushing members back to back, and the pulling member is used for pulling the two pushing members to move towards each other.

3. The inner support mechanism according to claim 2, wherein the inner support member has a sliding track extending through two sides of the inner support member, the pushing member includes a pushing portion and a sliding portion, the sliding portion is slidably engaged with the sliding track, and one end of the sliding portion extends out of the sliding track to connect with the pushing portion, the elastic member abuts between the pushing portion and the inner support member, the two elastic members are used for providing elastic force to move the two pushing portions away from each other, and the pulling member is connected with the two sliding portions to pull the two sliding portions to move toward each other.

4. The inner supporting mechanism according to claim 3, wherein the elastic member is tubular, a first annular groove is formed on a surface of the pushing portion facing the inner supporting member, the first annular groove surrounds an outer periphery of the sliding portion, a second annular groove is formed on a surface of the inner supporting member facing the pushing portion, the second annular groove surrounds an outer periphery of the sliding track, and two ends of the elastic member respectively abut against bottom walls of the first annular groove and the second annular groove.

5. The inner supporting mechanism according to claim 4, wherein a traction rail communicated with the sliding rail is arranged at the middle part of the inner supporting member, the pulling member comprises two pulling ropes and a driving part, the driving part is arranged corresponding to the traction rail, one end of each pulling rope is connected with the driving part, the other end of each pulling rope is connected with one end of each sliding part far away from the pushing part, and the two pulling ropes can pull the two sliding parts to move towards each other under the driving of the driving part.

6. The internal supporting mechanism according to claim 5, wherein the pulling member further comprises two rollers, the two rollers are disposed on the sliding rail and located on two sides of a communication position between the traction rail and the sliding rail, a circumferential side surface of each roller is provided with a circumferentially surrounding groove, and the two pulling ropes are respectively pressed in the two grooves.

7. The inner support mechanism according to claim 3, wherein a surface of the sliding portion is mirror-finished.

8. A battery cell blanking device, comprising a driving mechanism and the internal support mechanism of any one of claims 1 to 7, wherein the driving mechanism is connected to the internal support member and is used for driving the internal support member to enter or exit from the interior of a battery cell.

9. The battery core blanking device according to claim 8, wherein the driving mechanism includes a driving member and two connecting members, the two connecting members are disposed in parallel, and the driving member is connected to the inner supporting member through the two connecting members, so as to drive the inner supporting member to enter or exit from the interior of the battery core through the two connecting members.

10. A winding machine, characterized by comprising the cell blanking device of claim 8 or 9.