CN219321405U - Battery lamination system - Google Patents

Abstract

The utility model relates to the technical field of battery production, in particular to a battery lamination system. The battery lamination system includes: the conveying device is used for conveying the single battery cell along a first preset direction; the stacking wheel is arranged at the tail part of the conveying device and rotates along a second preset direction around the axis of the stacking wheel, the stacking wheel is provided with a plurality of tab claws distributed along the circumferential direction, the tab claws are bent along the circumferential direction of the stacking wheel, an accommodating space is formed between every two adjacent tab claws so as to receive the single battery cell conveyed from the conveying device, and the tab claws are provided with an open state allowing the single battery cell to move in the accommodating space and a closed state pressing the single battery cell; stacking means disposed under the stacking wheel to receive the single cells transferred from the stacking wheel; and the control device is suitable for controlling the tab claw to be switched to a closed state when the stacking wheel receives the single battery cell and controlling the tab claw to be switched to an open state when the single battery cell is transported to the stacking device along with the stacking wheel. The transfer speed is high, the travel is short, and the whole structure is compact.

Description

Battery lamination system

Technical Field

The utility model relates to the technical field of battery production, in particular to a battery lamination system.

Background

The lamination is a core procedure in the production and manufacturing process of the lithium battery, and has great influence on the performance of the battery core and the production efficiency of the battery. Existing lamination machines often employ Z-lay technology, i.e., one separator strip is folded in a Z-shaped manner, with the positive or negative electrodes being alternately placed on the separator strip by means of a gripper system after each folding operation.

However, the traditional Z-shaped lamination mode is limited by the need of swinging the diaphragm to stack pole pieces in the lamination process, single swinging of the diaphragm can only realize single-layer pole piece stacking, lamination efficiency is difficult to greatly improve, work efficiency improvement faces bottlenecks, the requirements of enterprise scale, mass production and cost reduction and efficiency increase are difficult to meet, and equipment mechanisms of the Z-shaped lamination system occupy large space and are not compact enough, so that inconvenience is brought to lamination work.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects of large occupied space and low lamination efficiency of the lamination machine in the prior art, so as to provide a battery lamination system with compact structure, small occupied space and high lamination efficiency.

In order to solve the above problems, the present utility model provides a battery lamination system including: the conveying device is used for conveying the single battery cell along a first preset direction; the stacking wheel is arranged at the tail part of the conveying device and rotates along a second preset direction around the axis of the stacking wheel, the stacking wheel is provided with a plurality of tab claws distributed along the circumferential direction, the tab claws are bent along the circumferential direction of the stacking wheel, an accommodating space is formed between every two adjacent tab claws so as to receive the single battery cell conveyed from the conveying device, and the tab claws are provided with an open state allowing the single battery cell to move in the accommodating space and a closed state pressing the single battery cell; stacking means disposed under the stacking wheel to receive the single cells transferred from the stacking wheel; and the control device is suitable for controlling the tab claw to be switched to a closed state when the stacking wheel receives the single battery cell and controlling the tab claw to be switched to an open state when the single battery cell is transported to the stacking device along with the stacking wheel.

Optionally, the tab claw is made of a shape memory material, and the control device applies an action field in a second preset direction in a region between the tail of the conveying device and the stacking device, the tab claw being switched to a closed state when entering the action field, and the tab claw being switched to an open state when leaving the action field.

Alternatively, the cross-sectional shape of the field is a sector in a direction perpendicular to the axis of the stacking wheel.

Optionally, the field of action is an electric field, and/or a magnetic field, and/or a temperature field, and/or a chemical field.

Optionally, the stacking device includes: a stacking bin configured with an upwardly facing opening from which a single cell is adapted to enter the stacking bin; and the stop piece is arranged on one side of the stacking bin, can selectively extend out of the upper surface of the stacking bin and at least partially coincides with the accommodating space in structure so as to block the single battery cell during the rotation process of the stacking wheel, and therefore the single battery cell can be transferred into the stacking bin from the accommodating space.

Optionally, the tab claw is configured with a notch opening towards the distal end of the tab claw, the stopper being adapted to pass through the notch.

Alternatively, the stopper may be rotatable with respect to the stack compartment, the stopper having a raised state protruding from an upper surface of the stack compartment and blocking the single cells in the receiving space, and a depressed state retracted with respect to the stack compartment and pressing the single cells in the stack compartment.

Optionally, the stacking device further includes a positioning mechanism, where the positioning mechanism is disposed corresponding to the stacking bin, so as to position the single battery cell entering the stacking bin.

Optionally, the positioning mechanism comprises a vent hole and an air blowing component which are arranged on the wall of the stacking bin, and the air blowing component blows air into the stacking bin through the vent hole so as to control the alignment of the single battery cell and the stacking bin; and/or the positioning mechanism is an electromagnetic positioning mechanism, and the electromagnetic positioning mechanism applies an alternating electromagnetic field to the stacking bin so as to control the alignment of the single battery cell and the stacking bin.

Optionally, the number of the conveying devices is one or more; and/or the number of stacking wheels is one or more.

The utility model has the following advantages:

1. through setting up and stacking the wheel as connecting conveyor and stacking the device intermediate links to through the accommodation space that forms between the tab claw of stacking the wheel to transport single electric core, transport fast, the stroke is short, overall structure is compact, saves occupation space, and, control device control tab claw switches between closed state and open state, has both guaranteed to press from both sides tight single electric core in the single electric core process of stacking round transportation, prevent single electric core from flying out in the transportation process, guaranteed again that single electric core can be shifted to stacking the device smoothly from stacking the wheel when arriving stacking the device department, thereby guaranteed battery lamination's smooth going on, improve lamination efficiency

2. The shape memory material is applied to the tab claw and combined with the action field applied by the control device, so that the shape of the tab claw is changed by changing the external conditions acting on the tab claw, the tab claw is switched between a closed state and an open state, and the stable fluency and the stable reliability of single-cell transfer are ensured.

3. Through setting up the backstop in one side of stacking the storehouse to stop through the backstop to stacking the single electric core in the wheel, promote single electric core to break away from the accommodation space, thereby realize with single electric core from stacking the wheel and shift to stacking in the storehouse, guarantee single electric core's smooth shift, improve work efficiency.

4. Through setting up the backstop and can rotate for stacking the storehouse for the backstop can be at two kinds of states of standing up state and pushing down, and the backstop both can be as the part that blocks single electric core, can also be as the compact heap of pushing down a plurality of single electric cores in stacking the storehouse, has realized the two kinds of uses of a component, has improved the mechanism utilization ratio, saves device system space.

5. The single battery cell is positioned by arranging the positioning mechanism, so that the single battery cell can enter the stacking bin in an accurate posture, a plurality of single battery cells entering the stacking bin can be aligned, subsequent procedures of grabbing, transferring, rubberizing and the like are facilitated, and the quality of a battery is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural view of a battery lamination system according to an embodiment of the present utility model;

FIG. 2 shows a schematic view of a structure of a stopper in a depressed state according to an embodiment of the present utility model;

FIG. 3 shows a schematic top view of a stacking bin of an embodiment of the utility model;

FIG. 4 shows a schematic view of the position of two stacking wheels and stops according to an embodiment of the present utility model;

fig. 5 shows a schematic structural diagram of a single cell according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a conveying device; 11. a first steering wheel; 12. a second steering wheel; 20. stacking wheels; 21. a tab claw; 22. an accommodation space; 30. stacking means; 31. stacking a bin; 311. a vent hole; 32. a stopper; 40. an action field; 50. a single cell; 51. a diaphragm; 52. a positive plate; 53. a negative plate.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 5, the battery pack system of the present embodiment includes: the conveying device 10, the stacking wheel 20, the stacking device 30 and the control device, wherein the conveying device 10 conveys the single battery cell 50 along a first preset direction; the stacking wheel 20 is arranged at the tail of the conveying device 10 and rotates along a second preset direction around the axis of the stacking wheel 20, the stacking wheel 20 is provided with a plurality of tab claws 21 distributed along the circumferential direction, the tab claws 21 are bent along the circumferential direction of the stacking wheel 20, an accommodating space 22 is formed between every two adjacent tab claws 21 so as to accommodate the single cell 50 conveyed from the conveying device 10, and the tab claws 21 are provided with an open state allowing the single cell 50 to move in the accommodating space 22 and a closed state pressing the single cell 50; the stacking device 30 is disposed under the stacking wheel 20 to receive the single cells 50 transferred from the stacking wheel 20; the control means is adapted to control the switching of the tab claw 21 to the closed state when the stacking wheel 20 receives a single cell 50 and to control the switching of the tab claw 21 to the open state when the single cell 50 is transported with the stacking wheel 20 to the stacking means 30. Wherein, the first preset direction refers to a "first preset direction" indicated by an arrow in fig. 1; the second preset direction refers to a "second preset direction" indicated by an arrow in fig. 1; the tail of the conveying device 10 refers to the tail of the conveying device 10 along the first preset direction; the axis of the stacking wheel 20 is perpendicular to the first preset direction.

According to the battery lamination system, the stacking wheel 20 is arranged to serve as an intermediate link for connecting the conveying device 10 and the stacking device 30, the single battery cell 50 is transported through the accommodating space 22 formed between the splicing claws 21 of the stacking wheel 20, the transportation speed is high, the travel is short, the whole structure is compact, occupied space is saved, the splicing claws 21 are controlled to switch between a closed state and an open state through the control device, the single battery cell 50 can be clamped in the process of transporting the single battery cell 50 by the stacking wheel 20, the single battery cell 50 is prevented from flying out in the transportation process, the single battery cell 50 can be smoothly transported from the stacking wheel 20 to the stacking device 30 when reaching the stacking device 30, the battery lamination efficiency is guaranteed to be smoothly carried out, the novel battery stacking system is improved, and the iterative upgrading of the assisted battery stacking system is provided.

It should be noted that, the bending direction of the tab claw 21 along the circumferential direction of the stacking wheel 20 is opposite to the second preset direction, so that when the stacking wheel 20 receives the single cell 50 conveyed from the conveying device 10, the accommodating space 22 is opened toward the conveying device 10, so that the single cell 50 smoothly enters the accommodating space 22; the sheet collecting claw 21 on the stacking wheel 20 is similar to a banknote collecting claw of a banknote counter, the transfer efficiency is far higher than that of the conventional stacking device, one end of the sheet collecting claw 21 is fixedly connected with the body of the stacking wheel 20, the other end of the sheet collecting claw is a free end, the accommodating space 22 extends along the sheet collecting claw 21 towards the direction close to the axis of the stacking wheel 20, when the sheet collecting claw 21 is in an open state, the single battery cell 50 is convenient to enter the accommodating space 22, so that the adjacent two sheet collecting claws 21 cover the single battery cell 50 as much as possible, when the single battery cell 50 enters the accommodating space 22 to a certain extent, the sheet collecting claw 21 is switched into a closed state, and the adjacent two sheet collecting claws 21 clamp the single battery cell 50, so that friction force between the sheet collecting claw 21 and the single battery cell 50 is increased, and stable conveying of the single battery cell 50 is prevented from occurring in the process of flying sheets along with the rotation of the stacking wheel 20.

It should be noted that, the single cell 50 includes a positive plate 52, a negative plate 53 and two diaphragms 51, wherein the diaphragms 51 separate the positive and negative plates, the area of the negative plate 53 is larger than that of the positive plate 52, the area of the diaphragms 51 is larger than that of the negative plate 53, and the single cell 50 is manufactured in a thermal compounding mode.

Preferably, the conveying device 10 adopts a belt conveying system, the belt conveying system is composed of two sets of belt structures moving at equal speed, the tail parts of the two sets of belt conveying systems are respectively provided with a first steering wheel 11 and a second steering wheel 12, the rotation directions of the first steering wheel 11 and the second steering wheel 12 are opposite, the rotation direction of the second steering wheel 12 is the same as the rotation direction of the stacking wheel 20, the belt spacing between the two sets of belt conveying systems is slightly larger than the thickness of a single cell 50, so that the friction force between the single cell 50 and a belt ensures stable and reliable conveying, the conveying device 10 conveys the single cell 50 to the accommodating space 22 of the stacking wheel 20, and the single cell 50 moves into the accommodating space 22 of the stacking wheel 20 by virtue of movement inertia.

In this embodiment, the tab claw 21 is made of a shape memory material, and in the second preset direction, the control device applies the field 40 in the area between the tail of the conveyor device 10 and the stacking device 30, i.e. the field 40 covers the area on the stacking wheel 20 where the single cell 50 is located, the tab claw 21 switches to the closed state when entering the field 40, and the tab claw 21 switches to the open state when leaving the field 40. By applying the shape memory material to the tab claw 21 and combining the application field 40 applied by the control device, the shape of the tab claw 21 is changed by changing the external conditions acting on the tab claw 21, so that the tab claw 21 is switched between a closed state and an open state, and the stability and smoothness and the stability and the reliability of the transfer of the single cell 50 are ensured. It should be noted that the shape memory material refers to a material that an article having an initial shape changes its initial condition under a certain condition and is fixed, and then the initial shape can be restored by the stimulus of external conditions (such as heat, electricity, light, chemical induction, etc.), wherein the shape memory material includes a shape memory polymer, a shape memory alloy, etc., and the shape memory alloy can be classified into a thermal type memory alloy, an electric type memory alloy, a photo type memory alloy, a chemical induction memory alloy, etc.

Specifically, when the tab claw 21 made of the shape memory material enters the area of the action field 40, the shape of the tab claw 21 is changed to be a press fit shape gradually bent towards the axial direction of the stacking wheel 20, namely a closed state, the accommodating space 22 is correspondingly reduced, the tab claw 21 presses the single cell 50, the friction force between the tab claw 21 and the single cell 50 is increased, and the single cell 50 is ensured to be stably and reliably transferred along with the stacking wheel 20; when the single cell 50 rotates with the stacking wheel 20 to above the stacking device 30, the tab claw 21 leaves the coverage area of the action field 40, and when the tab claw 21 leaves the action field 40, the external condition acting on the tab claw 21 changes again, the tab claw 21 is stimulated by the external condition again to change the shape, that is, the open state before entering the action field 40 is not reached, the friction force of the tab claw 21 on the single cell 50 is reduced, so that the single cell 50 is separated from the accommodating space 22.

In this embodiment, in the direction perpendicular to the axis of the stacking wheel 20, the cross-sectional shape of the action field 40 is a sector, the angle of the sector is θ, the stacking wheel 20 receives the single cell 50 conveyed from the conveying device 10, the tab claw 21 holding the single cell enters the sector, during the rotation of the stacking wheel 20, the tab claw 21 holding the single cell 50 is always located in the sector, and when the tab claw 21 leaves the sector, the tab claw correspondingly reaches the upper side of the stacking device 30. Preferably, the single cell 50 conveyed by the conveying device 10 enters the accommodating space 22 from directly above the stacking wheel 20, and the stacking device 30 is located directly below the stacking wheel 20, and correspondingly, the included angle θ of the fan shape is 135 °.

In this embodiment, the acting field 40 may be one of an electric field, a magnetic field, a temperature field or a chemical field, or may be a coupling field formed by combining multiple fields, for example, an electromagnetic field, specifically, may be determined according to a specific material of the shape memory material, so that the tab claw 21 needs to be ensured to be capable of being changed in morphology under the action of the acting field 40.

In the present embodiment, the stacking apparatus 30 includes: a stacking bin 31 and a stopper 32, the stacking bin 31 being configured with an upwardly facing opening from which a single cell 50 is adapted to enter the stacking bin 31; a stopper 32 is provided at one side of the stack bin 31, and the stopper 32 is selectively protruded from an upper surface of the stack bin 31 and at least partially structured to coincide with the receiving space 22 to block the single cells 50 during rotation of the stack wheel 20, so that the single cells 50 are transferred from the receiving space 22 into the stack bin 31. Wherein, the upper direction refers to the direction of the arrow in fig. 1; the stopper 32 is provided at one side of the stacking bin 31 in the advancing direction toward the second preset direction; at least a part of the structure of the stopper 32 coincides with the accommodating space 22, which means that the stopper 32 can extend into the accommodating space 22 at the height and can contact with the single cell 50 in the accommodating space 22, but the stopper 32 does not interfere with the stacking wheel and does not affect the rotation of the stacking wheel 20. Specifically, the stopper 32 is a stop plate, the stop plate extends upwards from the side wall of the stacking bin 31, when the single battery cell 50 rotates above the stacking bin 31 along with the stacking wheel 20, the stopper 32 and the stacking wheel 20 rotating at a uniform speed move relatively, meanwhile, the combining tab claw 21 is switched to an open state, and the stopper 32 pushes the single battery cell 50 to be transferred from the stacking wheel 20 to the stacking bin 31. By arranging the stop piece 32 on one side of the stacking bin 31 and blocking the single battery cell 50 in the stacking wheel 20 through the stop piece 32, the single battery cell 50 is pushed to be separated from the accommodating space 22, so that the single battery cell 50 is transferred from the stacking wheel 20 to the stacking bin 31, smooth transfer of the single battery cell 50 is ensured, and the working efficiency is improved.

In the present embodiment, the tab claw 21 is configured with a notch opening toward the distal end of the tab claw 21, and the stopper 32 is adapted to pass through the notch. It should be noted that, the end of the tab claw 21 refers to the end of the tab claw 21 away from the axis of the stacking wheel 20, preferably, the notch on the tab claw 21 is in a long strip shape, the notch is located in the middle of the tab claw 21 along the width direction, and the length of the notch extends along the extending direction of the tab claw 21, so that the connection of the tab claw 21 and the stacking wheel 20 body is not affected, and the stop piece 32 can pass through the notch to block the single cell 50, so that the structure is simple and the processing is convenient. It will be appreciated that, as an alternative embodiment, the tab claw 21 may be provided without a notch, two stoppers 32 are provided, the two stoppers 32 are respectively located on two sides of the stacking wheel 20 in the width direction, the blocking of the single cell 50 can be achieved, and the two stoppers 32 can ensure the symmetry of the stress of the single cell 50, so as to ensure the stability of the single cell 50 in the transferring process. Wherein the width direction refers to a direction perpendicular to the axis of the stacking wheel 20.

In the present embodiment, the stopper 32 is rotatable with respect to the stack housing 31, and the stopper 32 has a raised state in which it protrudes from the upper surface of the stack housing 31 and blocks the single cell 50 in the accommodation space 22, and a depressed state in which it is retracted with respect to the stack housing 31 and presses the single cell 50 in the stack housing 31. When the stop piece 32 is in the standing state, the single battery cells 50 carried on the stacking wheel 20 are prevented from continuously rotating along with the stacking wheel 20, so that the single battery cells 50 are transferred into the stacking bin 31, and when the stop piece 32 is in the pressing state, the stop piece 32 is converted into a pressing piece, the stop piece 32 presses all the single battery cells 50 in the stacking bin 31, so that the whole positioning of a pole group formed by a plurality of single battery cells 50 in the stacking bin 31 is realized, the stacking bin 31 can be lowered with the pole group, and the follow-up procedures such as grabbing and transferring of the pole group by a follow-up external manipulator clamping jaw are facilitated. By arranging the stopper 32 to rotate relative to the stacking bin 31, the stopper 32 can be switched between an erect state and a pressed state, and the stopper 32 can be used as a component for blocking the single battery cells 50 and a pressing piece for pressing a plurality of single battery cells 50 in the stacking bin 31, so that two purposes of one component are realized, the utilization rate of the mechanism is improved, and the system space of the device is saved.

Specifically, one end of the stopper 32 is rotatably connected with the wall of the stacking bin 31 and the other end is a free end, and the stopper 32 can be manually moved to switch the stopper 32 between the raised state and the depressed state; it will be appreciated that, as an alternative embodiment, a driving component may be provided to drive the action of the stop member 32, and correspondingly, a detecting component may be provided at the stacking bin 31 to detect the number of single cells 50 in the stacking bin 31, and when the number of single cells 50 in the stacking bin 31 reaches the number required by one pole group, the detecting component transmits the detected signal to the control system, and the control system controls the driving component to drive the stop member 32 to switch from the raised state to the pressed state, so that the reaction is rapid, the accuracy is high, and the automation degree is high. It should be noted that, when the stopper 32 is in the pressed state, it is necessary to ensure that no new single cell 50 is delivered to the stacking bin 31, for example, the number of single cells 50 may be delivered by controlling the delivery device 10, so that the number of single cells 50 required for one pole group is set to one group, and a certain interval is maintained between each group of single cells 50, thereby ensuring that no new single cell 50 is delivered to the stacking bin 31 when the stopper 32 is in the pressed state.

Preferably, the end of the stopper 32 remote from the compartment wall of the stacking compartment 31 is rounded, so that damage to the single cell 50 when contacting the single cell 50 is reduced, and safety of the battery is improved.

Preferably, the stacking device 30 further comprises an adjusting device connected below the stacking bin 31, and the adjusting device can drive the stacking bin 31 to move in an up-down or left-right direction indicated by an arrow in fig. 1, so as to facilitate the clamping of the pole group in the stacking bin 31 by the manipulator.

In this embodiment, the stacking apparatus 30 further includes a positioning mechanism, which is disposed corresponding to the stacking bin 31, to position the single cells 50 entering the stacking bin 31. The single battery cell 50 is positioned by arranging the positioning mechanism, so that the single battery cell 50 can enter the stacking bin 31 in an accurate posture, a plurality of single battery cells 50 entering the stacking bin 31 can be aligned, subsequent procedures of grabbing, transferring, rubberizing and the like are facilitated, and the quality of a battery is ensured. Further referring to fig. 3, the space inside the stacking bin 31 for accommodating the single cells 50 is configured as a recess portion which is the same as the shape of the single cells 50 and slightly larger than the size of the single cells 50, and the single cells 50 enter the recess portion by means of a positioning mechanism, so that the single cells 50 are further prevented from being excessively large and cheap, and the stacking uniformity is ensured.

In this embodiment, the positioning mechanism is an airflow positioning mechanism, and includes a vent hole 311 and an air blowing component that are disposed on a wall of the stacking bin 31, and the air blowing component blows air into the stacking bin 31 through the vent hole 311 to control the alignment of the single cell 50 and the stacking bin 31. Specifically, the vent hole 311 is disposed at an upper position on the bin wall, and is captured by the airflow field when the single cell 50 enters the stacking bin 31, and the posture of the single cell 50 is adjusted by adjusting airflow parameters such as the flow rate, the air flow and the like of the airflow, so that the single cell 50 is accurately and stably positioned in the stacking bin 31, and meanwhile, a safety air cushion is provided for the falling single cell 50, the damage of equipment to the single cell 50 is reduced, the whole adjusting process is free from contact damage, the automation degree is high, and the damage to the single cell 50 can be reduced. It will be appreciated that, as an alternative embodiment, the positioning mechanism may also be an electromagnetic positioning mechanism, where an alternating electromagnetic field is applied to the stacking bin 31 to control the alignment of the single cell 50 with the stacking bin 31, specifically, when the single cell 50 enters the stacking bin 31, the electromagnetic field is captured by the electromagnetic field, and the alternating current generates an alternating induced current and an induced magnetic field inside the single cell 50, and generates a force with the magnetic field of the stacking bin 31, so that the precise positioning of the single cell is achieved through the control of the amplitude, frequency, and the like of the alternating current. It will be appreciated that as a further alternative, the positioning mechanism may comprise both an air flow positioning mechanism and an electromagnetic positioning mechanism, which may act together.

In the present embodiment, the number of the conveying devices 10 is one or more, and a plurality of conveying devices 10 simultaneously convey the single battery cells 50 into different accommodating spaces 22 of the stacking wheel 20, so as to improve the tab efficiency of the stacking wheel 20 and further improve the production efficiency. It should be noted that, a receiving space 22 is formed between every two adjacent tab claws 21, so that the stacking wheel 20 has a plurality of receiving spaces 22, which can be matched with a plurality of conveying devices 10 at the same time, further improving the stacking efficiency, wherein the plurality of conveying devices 10 are distributed at intervals along the circumferential direction of the stacking wheel 20 without mutual interference. Further, when the number of the conveying devices 10 is plural, the efficiency of conveying the single cells 50 is improved, the number of the stacking bins 31 can be increased, and it should be noted that the stacking bins 31 do not interfere with each other and coordinate with the conveying devices 10 to maximize the stacking efficiency. The stacking wheel 20 has 15 receiving spaces 22, the 15 receiving spaces 22 being numbered 1 to 15 in sequence, wherein the 1, 4, 7-bit pairs of different conveying devices 10, 13-bit pairs of different stacking bins 31.

In this embodiment, the number of the stacking wheels 20 is one or more, specifically, the number of the stacking wheels 20 can be determined according to the size of the single battery cell 50, the width direction of the stacking wheels 20 corresponds to the length direction of the single battery cell 50, when the length size of the single battery cell 50 is shorter, one stacking wheel 20 can be used for transferring, and when the length size of the single battery cell 50 is longer, one stacking wheel 20 is difficult to stably support the single battery cell 50, two or more stacking wheels 20 can be arranged in parallel along the width direction of the stacking wheel 20, the axes of the stacking wheels 20 are coincident, the tab claws 21 are correspondingly coincident and the rotation speed is the same, so that each stacking wheel 20 can synchronously clamp one single battery cell 50, the stable reliability of the single battery cell 50 is ensured, meanwhile, flexible replacement of a tool can be realized quickly, and the practical production situation of future enterprise multi-type products is met. As further shown in connection with fig. 4, the positional relationship of the two stacking wheels 20 is illustrated, in which case the stopper 32 may be disposed in the space between the two stacking wheels 20.

In this embodiment, the main flow of the battery lamination system is as follows:

the single battery cell 50 is conveyed into the accommodating space 22 of the stacking wheel 20 under the drive of the conveying device 10, the tab claw 21 clamps the single battery cell 50, the single battery cell 50 is transferred and conveyed into the stacking bin 31 of the stacking device 30 through the stacking wheel 20, the stop piece 32 and the positioning mechanism realize accurate positioning of the single battery cell 50, the alignment degree in the stacking bin 31 is ensured, and the stacking of the pole groups is completed.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects:

1. the tab claw 21 of the stacking wheel 20 adopts a shape memory material to more stably convey and transfer the single battery cell 50; the stacking wheel 20 effectively shortens the travel, saves the machine space and reduces the equipment cost;

2. the positioning mechanism adopts electromagnetic positioning and/or airflow positioning to ensure the positioning precision of the electrode;

3. one component of the stop 32 is dual-purpose, improving the utilization of the mechanism and saving the system space of the device.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A battery lamination system, comprising:

a conveying device (10) for conveying the single battery cell (50) along a first preset direction;

a stacking wheel (20) arranged at the tail of the conveying device (10) and rotating along a second preset direction around the axis of the stacking wheel (20), wherein the stacking wheel (20) is provided with a plurality of tab claws (21) distributed along the circumferential direction, the tab claws (21) are bent along the circumferential direction of the stacking wheel (20), an accommodating space (22) is formed between every two adjacent tab claws (21) so as to accommodate the single battery cell (50) conveyed from the conveying device (10), and the tab claws (21) are provided with an open state allowing the single battery cell (50) to move in the accommodating space (22) and a closed state pressing the single battery cell (50);

-stacking means (30) arranged below said stacking wheel (20) to receive said single cells (50) delivered from said stacking wheel (20);

-control means adapted to control the switching of the tab claw (21) to the closed state when the stacking wheel (20) receives the single cell (50) and to control the switching of the tab claw (21) to the open state when the single cell (50) is transported with the stacking wheel (20) to the stacking means (30).

2. Battery lamination system according to claim 1, characterized in that the tab claw (21) is made of a shape memory material, in the second preset direction, the control means apply an action field (40) in the area between the tail of the conveyor means (10) and the stacking means (30), the tab claw (21) switching to the closed state upon entering the action field (40), the tab claw (21) switching to the open state upon exiting the action field (40).

3. Battery lamination system according to claim 2, characterized in that the cross-sectional shape of the active field (40) is sector-shaped in a direction perpendicular to the axis of the stacking wheel (20).

4. Battery lamination system according to claim 2, characterized in that the action field (40) is an electric field, and/or a magnetic field, and/or a temperature field, and/or a chemical field.

5. The battery lamination system according to claim 1, wherein the stacking means (30) comprises:

-a stacking bin (31) configured with an upwardly facing opening, from which opening the single cell (50) is adapted to enter the stacking bin (31);

a stopper (32) disposed at one side of the stacking bin (31), the stopper (32) selectively protruding out of an upper surface of the stacking bin (31) and being at least partially structured to coincide with the accommodating space (22) to block the single cell (50) during rotation of the stacking wheel (20) so that the single cell (50) is transferred from the accommodating space (22) into the stacking bin (31).

6. The battery lamination system according to claim 5, characterized in that the tab claw (21) is configured with a notch opening towards the end of the tab claw (21), through which notch the stop (32) is adapted to pass.

7. The battery lamination system according to claim 5, characterized in that the stopper (32) is rotatable with respect to the stacking bin (31), the stopper (32) having a raised state protruding from an upper surface of the stacking bin (31) and blocking the single cells (50) in the accommodation space (22), and a depressed state retracting with respect to the stacking bin (31) and pressing the single cells (50) in the stacking bin (31).

8. The battery lamination system according to claim 5, wherein the stacking device (30) further comprises a positioning mechanism disposed in correspondence with the stacking bin (31) to position the single cells (50) entering the stacking bin (31).

9. The battery lamination system according to claim 8, characterized in that the positioning mechanism comprises a vent hole (311) provided on a bin wall of the stacking bin (31) and a blowing member that blows gas into the stacking bin (31) through the vent hole (311) to control the alignment of the single cells (50) with the stacking bin (31);

and/or the positioning mechanism is an electromagnetic positioning mechanism that applies an alternating electromagnetic field into the stacking bin (31) to control the single cell (50) to align with the stacking bin (31).

10. The battery lamination system according to any one of claims 1 to 9, characterized in that the number of conveying means (10) is one or more;

and/or the number of stacking wheels (20) is one or more.

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