CN111710895A - Push balance structure and battery formation fixture - Google Patents

Abstract

The invention belongs to the field of lamination machinery, and in particular relates to a push balance structure and a battery forming fixture, comprising two sets of balance components symmetrically connected to both ends of the same set of laminate components, and the balance component includes two pieces of connecting pieces, a guide seat and a guide rod The guide seat is arranged at the end of the middle layer board of the laminate board assembly, the guide seat is provided with a guide hole, and the guide rod slides through the guide hole; the connecting piece is provided with a first connecting part and a second connecting part; the second connecting part There are connecting holes on the part; the first connecting pin is connected with the guide rod through the two connecting holes; the first connecting parts of the two connecting parts are pivotally connected to the ends of the other two laminates of the same group of laminate components; the push layer One layer of the plate assembly, each connecting piece in the balance assembly on both sides of the laminated board assembly pushes the corresponding guide rod to slide along the guide hole, and the guide rod pushes the other connecting piece, so that the two connecting pieces are connected around the first connection The pin rotates, compressing the distance between adjacent plies in the laminate assembly.

Description

Push balance structure and battery formation fixture

technical field

The invention belongs to the field of lamination machinery, and in particular relates to a push balance structure and a battery forming fixture.

Background technique

Lamination mechanisms are widely used in mechanical equipment, for example, battery compartment jig and battery forming jig; all of which are used to compress the battery by lamination.

In the Chinese patent literature, the publication number is: CN105958123A, which discloses a 64-channel polymer lithium-ion battery into a fixture machine, which records: the 64-channel laminate includes a heating plate, a fixture pressing plate, a temperature sensor, a connecting chain, and a silicone plate. and a battery tab contact pin for clamping the tabs of the polymer lithium ion battery, a plurality of clamp pressing plates are arranged in parallel with each other, and the polymer lithium ion batteries are clamped between them; the clamp pressing plates are used to clamp the polymer A heating plate is attached to the surface of the lithium-ion battery, and a silica gel plate is attached to the surface opposite to the heating plate; a temperature sensor is installed inside the clamp platen, and the ends of the clamp platen are connected to each other by connecting chains. The pressure control device pressurizes the 64-channel laminate, and automatically adjusts the pressure to meet the set requirements. The temperature control cabinet is to control the temperature of each laminate. The battery formation cabinet is made of polymer lithium ion. After the battery is pressurized and heated, the operation of charging and discharging is started.

However, when the clamp press plate is pressed against the battery, and the clamp press plate is supported on the guide rod, and the guide rod supports the clamp press plate and the battery, the thickness of the battery is inconsistent, and there is a fitting gap between the clamp press plate and the guide rod, so When pressing, the clamp plate will be inclined, which will lead to uneven pressure on the battery. Therefore, when the pressure is formed or divided, the pressure of the battery will be uneven, making it difficult to control the quality of the battery forming or dividing, reducing the battery. performance, and when the clamp press plate is pressed against the battery, the clamp press plate is stuck on the guide rod.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a push balance structure and a battery forming jig, which aims to solve the problem that the current lamination mechanism will cause the pressing plate to tilt and cause uneven stress on the pressed object when laminating products with different thicknesses.

In order to achieve the above purpose, the pushing balance structure provided by the embodiment of the present invention includes two sets of balance components symmetrically connected to both ends of the same set of laminate components, and the balance components include two pieces of connectors, a guide seat and a guide rod; The guide seat is arranged at the end of the middle layer of the laminate assembly, the guide seat is provided with a guide hole, and the guide rod slidably passes through the guide hole; the connecting piece is provided with a first connecting portion and the second connecting part; the second connecting part is provided with a connecting hole; the connecting holes of the two connecting pieces overlap, and the first connecting pin is connected to the guide rod through the connecting holes of the two connecting pieces ; The first connecting parts of the two connecting pieces are respectively pivoted to the ends of the other two pieces of the same set of laminate board assemblies; Push one layer of the laminate board assemblies, and the balance assemblies on both sides of the laminate board assemblies Each of the connecting pieces pushes the corresponding guide rod to slide along the guide hole, and the guide rod pushes the other connecting piece, so that the two connecting pieces rotate around the first connecting pin, compressing the laminate. The distance between adjacent layers in the assembly.

Further, the balance assembly further includes a connection sleeve, the connection sleeve passes through the two overlapping connection holes, the first connection pin is connected to the guide rod through the connection sleeve, and the connection hole is connected to the guide rod. The connecting sleeves are in clearance fit, and the connecting sleeves are sleeved with a gasket for isolating the two connecting pieces.

Further, arc-shaped grooves are provided on both of the connecting pieces in the balance assembly, the arc-shaped grooves coincide with the center of the connecting hole, and the second connecting pin passes through the two connecting pieces of the connecting piece. The arc groove is connected with the guide rod.

Further, when the second connecting pin limits the ends of the two arc-shaped grooves, the pivots of the two first connecting parts and the center of the second connecting pin are on the same horizontal line.

Further, the arc of the arc groove is 35°-55°.

The above-mentioned one or more technical solutions in the pushing balance structure provided by the embodiments of the present invention have at least the following technical effects: the balance components at both ends of the same group of laminate components, a layer of the board in the pushing laminate components, and the laminate components Each of the connecting pieces in the balance assemblies on both sides pushes the corresponding guide rod to slide along the guide hole, and the guide rod pushes the other connecting piece, so that the two connecting pieces go around the first connecting piece. The connecting pin rotates to compress the distance between the adjacent layers in the laminate assembly; thus, when the laminates are pressed against the product, under the action of the two balance components, the adjacent laminates can move in linkage, preventing the laminates from being supported along the support. When the guide rod moves, it avoids the problem of the inclination of the laminate due to the inconsistent thickness of the pressed object; it ensures that the pressed product is uniformly stressed, and can effectively reduce the problem of laminate wear.

A battery forming jig includes the pushing balance structure, and also includes two support bases, two groups of guide support assemblies, a laminate, a push mechanism and a power mechanism; The assembly is arranged oppositely between the two support bases, the pushing mechanism and the multiple pieces of the laminates are slidably connected to the two guide support members, and the power mechanism is arranged on one of the support bases and connected to the pushing mechanism; every adjacent three pieces of the laminates form a set of laminate assemblies, and the laminates at the rear end of the laminate assemblies are the laminates at the front end of the next laminate assembly, Both ends of each of the laminate components are connected with the balance component; the layer in the middle of the laminate component is connected to the guide seat; the first connecting parts of the two connecting pieces are pivotally connected to the same group of layers respectively The ends of the other two pieces of the laminate of the platen assembly.

Further, the same group of the laminate components is provided with two sets of the pushing balance structures; the two sets of the balance components of one set of the pushing balance structures are symmetrically arranged on the upper ends of the ends of the laminate components and the other two sets of the balance components of the push balance structure are symmetrically arranged at the lower end of the end of the laminate board component.

Further, the guide rod slidably passes through the guide seats of the two balance assemblies located on the same side.

Further, the connecting piece at the rear end of the balance assembly and the first connecting portion of the connecting piece at the front end of the adjacent balance assembly overlap each other and are pivotally connected to the corresponding layer plate.

Further, the guide and support assembly includes two first support and guide shafts arranged in parallel up and down and passing through the layer plate, and two second support and guide shafts arranged in parallel at the upper and lower sides and passing through the pushing mechanism.

Further, the layer plate is provided with a guide through hole for passing through the first support and guide shaft, and a plurality of rolling supports tangent to the surface of the first support guide shaft are arranged in the guide through hole ; When the layer plate moves along the first support and guide shaft, the rolling support member rolls along the first support and guide shaft.

Further, along the outer edge of each guide through hole, a side surface of the laminate is further provided with an inwardly recessed cavity, and the bottom wall of the cavity is also provided with an inwardly recessed cavity along the edge of the guide through hole. A recessed void-avoidance gap, both ends of the void-avoidance gap are provided with positioning grooves; the rolling support includes a support shaft and a rolling bearing, the rolling bearing is sleeved on the support shaft, and both ends of the support shaft are positioned In the corresponding positioning groove, one side of the rolling bearing extends into the guide through hole; the cavity is also provided with a cover plate for pressing the support shaft in the positioning groove, the The cover plate is connected with the layer plate by screws; the bottom of the cover plate is provided with a space avoiding space corresponding to the rolling bearing.

The above-mentioned one or more technical solutions in the battery formation jig provided by the embodiment of the present invention have at least the following technical effects:

1. Set the battery between the adjacent laminates. When the battery is clamped, the power mechanism pushes the pressing mechanism, and the pressing mechanism pushes the laminate to compress the battery; in the process of pressing, it is connected to the laminate. The connecting piece close to the pushing mechanism in the two sets of balance assemblies of the assembly pushes the guide rod, so that the guide rod slides down along the guide hole, so that the connecting piece rotates around the first connecting pin, so as to compress the adjacent layers The gap between the plates, and at the same time, under the push of the power mechanism, the guide rod is pushed, so that the layer plate moves along the guide support member to the direction away from the power mechanism, and at the same time, when a connecting member rotates around the first connecting pin, another A connecting piece rotates synchronously around the first connecting pin, so that the adjacent layers are linked together. Even if the thickness of the pressed battery is different, it will not cause the adjacent layers to tilt, so as to realize the synchronous movement along the guide support assembly, and in the Under the action of the corresponding balancing components, each layer can move smoothly, thus avoiding the problem that the layer is inclined due to the different thickness of the battery during the process of compressing the battery, resulting in uneven stress on the battery. In this way, the quality of the battery formation is ensured, and the problem of increasing the wear of the laminate and the guide support assembly due to the inclination of the layer plate when moving along the guide support assembly is avoided.

2. After the formation is completed, the pushing mechanism is pulled by the power mechanism to move along the guide support assembly, so that when the laminate is released from the battery, the two connecting pieces in each group of balancing assemblies rotate around the first connecting pin and unfold, and then It is realized that the layers can be fully opened, thereby facilitating the removal of the formed battery.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a perspective view of a push balance structure provided on a laminate assembly provided in an embodiment of the present invention.

FIG. 2 is a front view of the push balance structure provided on the laminate assembly provided by the embodiment of the present invention.

FIG. 3 is a perspective view of a pushing balance structure according to an embodiment of the present invention.

FIG. 4 is an exploded view of a pushing balance structure provided by an embodiment of the present invention.

FIG. 5 is a perspective view of a battery formation jig provided by an embodiment of the present invention.

FIG. 6 is a perspective view of the balancing component connected to the layer plate of the battery formation jig provided by the embodiment of the present invention.

FIG. 7 is a perspective view of the layers of the battery formation jig provided in an embodiment of the present invention.

FIG. 8 is a partial exploded view of the layers of the battery formation jig provided in an embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" "," "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present invention and simplification It is described, rather than indicated or implied, that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the embodiments of the present invention, unless otherwise expressly specified and limited, terms such as “installation”, “connection”, “connection”, and “fixation” should be understood in a broad sense. For example, it may be a fixed connection or a It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of the two elements or the interaction relationship between the two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention according to specific situations.

In one embodiment of the present invention, as shown in FIGS. 1-4 , a pushing balance structure includes two sets of balance components 100 symmetrically connected at both ends of the same set of laminate components. The balance component 100 includes two balance components 100 . The connecting piece 110 , the guide seat 120 and the guide rod 130 are included. The guide seat 120 is disposed at the end of the middle layer of the laminate assembly, and the guide seat 120 is provided with a guide hole 121 , and the guide rod 130 slides through the guide hole 121 . The connecting member 110 is provided with a first connecting portion 111 and a second connecting portion 112 ; the second connecting portion 112 is provided with a connecting hole 113 ; the connecting holes 113 of the two connecting members 110 overlap, and the first connecting pin 114 The connecting holes 113 of the two connecting members 110 are connected to the guide rods 130; end; pushes one layer of the laminate assembly, each of the connecting pieces 110 in the balance assembly 100 on both sides of the laminate assembly pushes the corresponding guide rods 130 to slide along the guide holes, the guide rods 130 pushes the other connecting piece 110 to make the two connecting pieces 110 rotate around the first connecting pin 114 to compress the distance between adjacent layers in the laminate assembly. In this embodiment, due to the balance assemblies 100 at both ends of the same set of laminate assemblies, when one layer of the laminate assemblies is pushed to move, each of the connecting members 110 in the balance assemblies on both sides of the laminate assemblies pushes simultaneously Corresponding to the guide rod 130 sliding along the guide hole 121 , the guide rod 130 pushes the other connecting piece 110 , so that the two connecting pieces 110 rotate around the first connecting pin 114 and compress the laminated board assembly. The distance between the adjacent laminates; thus, when the laminates press the product, under the action of the two balance components 100, the adjacent laminates move in linkage, so as to avoid the laminates moving along the support guide rod, due to the pressing object. The thickness of the lamella is different, which leads to the problem of inclination of the laminate; thus ensuring that the pressed product is uniformly stressed, and can effectively reduce the problem of laminate wear. Further, multiple sets of laminate components can also be connected in series through the multiple sets of pushing balance structures in this embodiment, so that multiple sets of products can be laminated at one time, and during the lamination process, the laminate components can be prevented from being damaged. The laminate is tilted during the movement, which ensures the stability of the operation of the laminate and balances the forces of the laminated products.

Further, referring to FIG. 4 , the balance assembly 100 further includes a connecting sleeve 140 , the connecting sleeve 140 passes through the two overlapping connecting holes 113 , and the first connecting pin 114 passes through the connecting sleeve 140 and all the connecting holes 113 . The guide rod 130 is connected, and the connection hole 113 is in clearance fit with the connection sleeve 140 . The connection sleeve 140 is sleeved with a gasket 141 for isolating the two connection pieces 110 . In this embodiment, the connecting piece 110 and the connecting sleeve 140 are rotated, so the wear of the connecting piece 110 can be reduced, and a gasket 141 is arranged between the two connecting pieces 110, thereby preventing the two connecting pieces 110 from contacting and preventing the two connecting pieces 110 rub against each other when rotating, so that the two connecting pieces 110 can rotate around the connecting sleeve 140 more smoothly.

Further, referring to FIGS. 3 and 4 , the two connecting pieces 110 in the balance assembly 100 are also provided with arc-shaped grooves 115 , and the arc-shaped grooves 110 coincide with the center of the connecting hole 113 , and the second The connecting pins 116 are connected to the guide rods 130 through the arc-shaped grooves 110 of the two connecting pieces 110 . In this embodiment, when the laminate is pressed, the second connecting pin 116 is pushed by the arc-shaped groove 115 on the connecting member 110 close to the driving force direction, so that the guide rod 130 slides down along the guide hole 121, thereby making the two The connecting piece 110 rotates around the first connecting pin 114, so as to achieve the product in which the laminates can be pressed against each other. And through the arc-shaped slot 115, the two connecting pieces 110 can be linked together, and the arc-shaped slot 115 can limit the position of the two connecting pieces 110, and when the connected laminate moves to a certain distance, the laminate can be prevented. Move again to protect the first connecting pin 114 .

Further, referring to FIG. 1 and FIG. 3 , when the second connecting pin 116 limits the ends of the two arc-shaped grooves 115 , the pivots of the two first connecting parts 111 and the second connecting pin 116 The center is on the same horizontal line. In this embodiment, when the laminate assembly releases the pressed product, the two connecting members 110 are limited by the arc-shaped groove 115 to avoid the problem that the laminates of the laminate assembly are compressed back during the opening process.

Further, referring to FIG. 3 and FIG. 4 , the arc of the arc groove 115 is 35°-55°. In this embodiment, when the laminate assembly is pressed against the product, the arc groove 115 and the second connecting pin 116 are used to limit the position, so that there is a certain limit gap in the lamination of the laminate assembly to prevent the laminate assembly from pressing the pressed product. The problem.

A battery forming jig, please refer to FIG. 1-FIG. 6, which includes the pushing balance structure, and also includes two support bases 200, two sets of guide support assemblies 300, a layer plate 400, a pushing mechanism 500 and a power mechanism (attached). The two support bases 200 are arranged oppositely, and the two groups of the guide support assemblies 300 are arranged oppositely between the two support bases 200, and the pushing mechanism 500 and the multiple pieces of the laminates 400 slide. The two guide supports 300 are connected to the ground. The power mechanism is installed on the support base 200 and connected to the pushing mechanism 500 . Every three adjacent pieces of the laminates 400 form a set of laminates, and the laminates 400 at the rear of the laminates are the laminates 400 at the front of the next laminate. Both ends of the laminate assembly are connected with the balance assembly 100 ; the laminate 400 in the middle of the laminate assembly is connected to the guide base 120 ; the first connecting parts 11 of the two connecting members 110 are pivotally connected to the same The other two pieces of the laminate 400 end of the laminate assembly. In this embodiment, a battery is arranged between the adjacent layers 400. When the battery is clamped, the pushing mechanism 500 is pushed by the power mechanism, and the connecting piece of the pushing mechanism is pushed by the pushing mechanism 00400 to push the guide rod. The guide rod slides down along the guide hole, so that the connecting plate compresses the battery; during the compressing process, the two groups of balance assemblies 100 connected to the laminate assembly close to the pushing mechanism 500 The connecting member 110 rotates around the first connecting pin 114 to compress the gap between the adjacent laminates 400 , and at the same time, under the driving force of the power mechanism, the guide rod 120 is pushed, so that the laminates 400 move along the guide support member 300 . When the connecting piece 110 rotates around the first connecting pin 114, the other connecting piece 110 rotates synchronously around the first connecting pin 114, so that the adjacent laminates 400 are linked together, even if they are pressed. The thickness of the batteries varies, and it will not cause the adjacent layers 400 to incline, so as to achieve synchronous movement along the guide support assembly 300, and under the action of the corresponding balance assembly 100, each layer 400 can move smoothly, thus avoiding the need for During the process of compressing the battery, the layer 400 is inclined due to the different thickness of the battery, which causes the problem of uneven force on the battery, thereby ensuring the quality of the battery formation and preventing the layer 400 from supporting the assembly along the guide. When the 300 moves, it is inclined to increase the wear of the layer plate 400 and the guide support assembly 300 . After the formation is completed, the pushing mechanism 500 is pulled and moved along the guide support assembly 300 by the power mechanism, so that when the layer plate 400 releases the battery, the two connecting pieces 0 in each group of balancing assemblies 100 rotate around the first connecting pin 114 and unfolding, thereby realizing that the laminates 400 can be fully and equally spaced apart, thereby facilitating the removal of the formed battery.

Further, referring to FIG. 5 and FIG. 6 , the same group of the laminate board assemblies are provided with two groups of the pushing balance structures. Specifically, two sets of the balance components 100 of one set of the pushing balance structure are symmetrically arranged on the upper ends of the ends of the laminate components, and the two sets of the other set of the pushing balance structure The balance assembly 100 is symmetrically disposed at the lower end of the end of the laminate assembly. In this embodiment, by disposing the balance assembly 100 at the upper and lower ends of the laminate assembly, the running stability of the laminate 400 is improved.

Further, referring to FIG. 5 and FIG. 6 , the guide rod 130 slides through the guide seat 120 of the two balance assemblies 100 located on the same side. In this embodiment, since the two balance components 100 share the same guide rod 130, the two sets of balance components 100 at the upper and lower ends can be linked together; the upper and lower forces are avoided due to the high height and heavy weight of the laminate 400. Unbalanced, causing the problem that the laminate 400 is tilted up and down.

Further, referring to FIG. 6 , how much of the connecting member 110 at the rear end of the balance assembly 100 and the front end of the adjacent balance assembly 100 is the first connecting portion 111 of the connecting member 110 overlapping each other and corresponding to the The laminates 400 are pivotally connected. In this embodiment, each group of adjacent balance assemblies 100 are connected in series, so that the overall structure is simple and the manufacturing cost is low; and when each layer plate 400 is pushed to compress the battery or loosen the battery, the layer plate 400 is pushed by the balance assembly 100 Therefore, the layer board 400 can be stably and smoothly slid along the guide support.

Further, referring to FIGS. 5 and 6 , the guide support assembly 300 includes two first support guide shafts 310 arranged in parallel up and down and passing through the layer plate 400 , and two parallel arranged up and down and passing through the pushing mechanism The second support guide shaft 320 of 500 . In this embodiment, the power mechanism drives the pressing mechanism 500 to slide along the second support and guide shaft 320 , thereby pushing the laminate 400 to slide along the first support and guide shaft 320 to compress and release the battery.

Further, referring to FIG. 7 and FIG. 8 , the layer plate 400 is provided with a guide through hole 401 for passing through the corresponding first support guide shaft 310 . A rolling support 410 supporting the guide shaft 310 with a surface tangent to it. When the layer plate 400 moves along the first support and guide shaft 310 , the rolling support 410 rolls along the first support and guide shaft 310 . In this embodiment, since the rolling support 410 is in rolling connection with the first support guide shaft 310 passing through the guide through hole 401 , the rolling contact replaces the original sliding contact, thereby reducing the frictional force, thereby reducing the friction between the laminate 400 and the layer 400 . The wear of the first support guide shaft 310 is reduced; the driving force of the driving laminate to press the battery is reduced, and the energy consumption is reduced. During the formation process, when the adjacent laminates 100 are pressed against the battery, the pressure detected by the pressure sensor is close to the pressure of the battery due to the reduction of friction, so during the formation process of the battery, the Control the pressure of battery formation and improve the quality of battery formation.

Further, referring to FIG. 8 , the side surface of the laminate 400 is further provided with an inwardly recessed cavity 402 along the outer edge of each of the guide through holes 401 , and the bottom wall of the cavity 402 is along the guide through holes 402 . The edge of the hole 401 is further provided with an inwardly recessed void 403 , and both ends of the void 403 are provided with positioning grooves 404 . The rolling support member 410 includes a support shaft 411 and a rolling bearing 412. The rolling bearing 412 is sleeved on the supporting shaft 411. Both ends of the supporting shaft 411 are positioned in the corresponding positioning grooves 404. One side extends into the guide through hole 401; the cavity is also provided with a cover plate 413 for pressing the support shaft 411 in the positioning groove 404, the cover plate 413 and the layer plate 400 screw connection; the bottom of the cover plate 413 is provided with a space avoiding space corresponding to the rolling bearing 412 . In this embodiment, the rolling bearing 412 is sleeved on the support shaft 411 , the support shaft 411 is positioned in the positioning groove 404 , and the support shaft 411 is pressed and fixed in the positioning groove 404 by the cover plate 413 . In this way, one side of the rolling bearing 412 extends into the guide through hole 401 . Therefore, when the first support guide shaft 310 passes through the guide through hole 401 , the rolling bearing 412 contacts the first support guide shaft 310 , so that the layer plate 400 is rolled and supported in the guide hole 401 . on the first support guide shaft 310 . And this structure can replace the rolling bearing 412 and the support shaft 411 .

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (12)

1. A pushing and pressing balance structure comprises two groups of balance assemblies which are symmetrically connected with two ends of the same group of laminated plate assemblies, and is characterized in that each balance assembly comprises two connecting pieces, a guide seat and a guide rod; the guide seat is arranged at the end part of the middle layer plate of the laminated plate assembly, a guide hole is formed in the guide seat, and the guide rod penetrates through the guide hole in a sliding manner; the connecting piece is provided with a first connecting part and a second connecting part; the second connecting part is provided with a connecting hole; the connecting holes of the two connecting pieces are overlapped, and a first connecting pin penetrates through the connecting holes of the two connecting pieces to be connected with the guide rod; the first connecting parts of the two connecting pieces are respectively pivoted at the end parts of the other two laminated plates of the same group of laminated plate assemblies; and pushing one layer of the laminated board assembly, wherein each connecting piece in the balance assembly on two sides of the laminated board assembly pushes the corresponding guide rod to slide along the guide hole, and the guide rod pushes the other connecting piece to enable the two connecting pieces to rotate around the first connecting pin so as to compress the distance between the adjacent layers of the laminated board assembly.

2. The thrust balancing structure of claim 1, wherein: the balance assembly further comprises a connecting sleeve, the connecting sleeve penetrates through two mutually overlapped connecting holes, the first connecting pin penetrates through the connecting sleeve and is connected with the guide rod, the connecting holes are in clearance fit with the connecting sleeve, and the connecting sleeve is sleeved with a gasket for isolating the two connecting pieces.

3. The thrust balancing structure of claim 1, wherein: arc-shaped grooves are further formed in the two connecting pieces in the balance assembly, the arc-shaped grooves are overlapped with the circle centers of the connecting holes, and the second connecting pin penetrates through the arc-shaped grooves of the two connecting pieces to be connected with the guide rod.

4. The thrust balancing structure of claim 3, wherein: when the second connecting pin limits the end parts of the two arc-shaped grooves, the pivot shafts of the two first connecting parts and the center of the second connecting pin are on the same horizontal line.

5. The thrust balancing structure of claim 4, wherein: the radian of the arc-shaped groove is 35-55 degrees.

6. A battery formation clamp is characterized by comprising the pushing balance structure as claimed in any one of claims 1 to 5, and further comprising two support seats, two groups of guide support components, a laminate, a pushing mechanism and a power mechanism; the two supporting seats are oppositely arranged, the two groups of guide supporting components are oppositely arranged between the two supporting seats, the pushing mechanism and the multiple laminated plates are slidably connected with the two guide supporting components, and the power mechanism is arranged on one supporting seat and is connected with the pushing mechanism; each three adjacent laminates form a group of laminate assemblies, the laminate at the tail end in each laminate assembly is the laminate at the front end in the next laminate assembly, and the two ends of each laminate assembly are connected with the balance assemblies; the laminated plate in the middle of the laminated plate assembly is connected with the guide seat; the first connecting parts of the two connecting pieces are respectively pivoted at the end parts of the other two laminated plates of the same group of laminated plate assemblies.

7. The battery formation jig of claim 6, wherein: the same group of laminated plate assemblies are provided with two groups of pushing and pressing balance structures; the two groups of balance assemblies of one group of pushing balance structures are symmetrically arranged at the upper end of the end part of the laminated plate assembly, and the other group of balance assemblies of the pushing balance structures are symmetrically arranged at the lower end of the end part of the laminated plate assembly.

8. The battery formation jig of claim 7, wherein: the guide rod passes through the guide seats of the two balancing components on the same side in a sliding mode.

9. The battery formation jig of claim 6, wherein: the connecting pieces at the tail end of the balancing assembly and the first connecting parts of the connecting pieces at the front end of the adjacent balancing assembly are overlapped and pivoted with the corresponding laminated plate.

10. The battery formation jig of claim 6, wherein: the guide support assembly comprises a first support guide shaft and a second support guide shaft, wherein the first support guide shaft is arranged in an up-down parallel mode and penetrates through the layer plate, and the second support guide shaft is arranged in an up-down parallel mode and penetrates through the pushing mechanism.

11. The battery formation jig of claim 10, wherein: the laminated plate is provided with a guide through hole for the first support guide shaft to pass through, and a plurality of rolling support pieces tangent to the surface of the first support guide shaft are arranged in the guide through hole; when the laminate moves along the first support guide shaft, the rolling support member rolls along the first support guide shaft.

12. The battery formation jig of claim 11, wherein: the side surface of the laminate is also provided with an inward-concave cavity along the outer edge of each guide through hole, the bottom wall of the cavity is also provided with an inward-concave clearance gap along the edge of each guide through hole, and two ends of the clearance gap are provided with positioning grooves; the rolling support piece comprises a support shaft and a rolling bearing, the rolling bearing is sleeved on the support shaft, two ends of the support shaft are positioned in the positioning grooves correspondingly, and one side of the rolling bearing extends into the guide through hole; a cover plate is further arranged in the cavity and used for pressing the supporting shaft in the positioning groove, and the cover plate is connected with the layer plate through screws; and the bottom of the cover plate is provided with a space avoiding position corresponding to the rolling bearing.

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