Patent Description:
Lithium-ion battery is a new generation of green high-energy battery with excellent performance, which has become one of the focuses of high-tech development. Lithium-ion batteries have the following characteristics: high voltage, high capacity, low consumption, no memory effect, no pollution, small size, small internal resistance, less self-discharge, and more cycles. Because of the above characteristics, lithium-ion batteries have been applied to many civil and military fields such as mobile phones, notebook computers, video cameras, and digital cameras.

The cells of lithium-ion batteries are generally stacked, that is, they are stacked with positive electrodes, separators, and negative electrodes. When stacking, a Z-type integrated cell stacking machine is usually used. The positive electrode and the negative electrode are first transferred from the material box to the positive electrode stacking station and the negative electrode stacking station; then the battery separator is pulled under the positive electrode, the positive electrode is pressed on one side of the battery separator; and then the battery separator is pulled under the negative electrode, the negative electrode is pressed on the other side of the battery separator. The stacking is repeated until the positive and negative electrodes of preset number of layers are respectively stacked on both sides of the battery separator. After the stacking is completed, the electrodes are clamped by the winding manipulator and constantly rotated so that the battery separator is wound outside the electrodes.

However, the existing equipment generally has the defect of single function, can only realize one processing function, which has disadvantages of low automation, large space occupation, high production cost and high labor consumption. In addition, in the existing stacking equipment, the stacking table needs to wait for the unloading mechanism to complete the actions of cutting, clamping, and withdrawing the battery separator before it can continue stacking. Therefore, after the first cell is formed, and before stacking of the second cell, the stacking table is in an idle state, which wastes working time. Hence, the existing equipment has a low stacking efficiency and a limited production speed of the cells.

The Chinese patent application <CIT> relates to the technical field of battery lamination, particularly to an integrated cell laminating machine and a cell laminating method. The integrated cell laminating machine comprises a laminating station, wherein the laminating station comprises a rotary plate, a rotary plate rotating apparatus arranged below the rotary plate for driving the rotary plate to rotate, and multiple laminating apparatuses uniformly arranged on the rotary plate for performing lamination; each laminating apparatus comprises a laminating rotary platform, a laminating power mechanism for driving the laminating rotary platform to swing in a vertical plane, and a first attraction mechanism and a second attraction mechanism which are symmetrically arranged on the two sides of the laminating rotary platform for attracting and driving a positive plate and a negative plate to swing in a vertical plane, and a diaphragm material-releasing mechanism mounted above the laminating rotary platform for supplying diaphragms, wherein each laminating power mechanism is positioned at the bottom of the corresponding laminating rotary platform; and the swinging track of the laminating rotary platform is externally tangent with the swinging track of the corresponding first attraction mechanism and second attraction mechanism.

The Chinese utility model <CIT> relates to an electricity core production facility field, especially relates to a pole piece charging equipment, include along the defeated flich of pole piece to setting gradually last piece mechanism a set of at least and setting up in the hot press mechanism at last piece mechanism rear. The utility model discloses structural arrangement is equitable, can realize the last piece of high accuracy, is provided with last piece mechanism a set of at least, can realize the preparation of individual layer or multi -storied pole piece, obviously improves production efficiency, improves electric core product quality, realizes continuous blowing, is favorable to improving the whole quality of product, and moves efficiently, and the last piece mechanism rear of every group is provided with hot press mechanism, and the stability that further improves after the preparation of multilayer pole piece lamination is higher.

The Chinese utility model <CIT> relates to an electricity core preparation technical field especially relates to an electricity core system bag lamination manufacture equipment, including that it sets gradually loading attachment and film -making device to follow the pay -off orientation, being provided with the feeding device between loading attachment and the film -making device, the feeding device sets up in the rear along pay -off orientation loading attachment, and the film -making device links with the discharge end of feeding device, and loading attachment includes that it fails the flich to setting gradually last piece mechanism a set of at least and setting up in the hot press mechanism at last mechanism rear to follow the pole piece.

The Chinese utility model <CIT> relates to an electricity core production facility field especially relates to a pole piece charging equipment, include along the defeated flich of pole piece to setting gradually last piece mechanism a set of at least and setting up in the hot press mechanism at last piece mechanism rear.

The Chinese patent application <CIT> discloses die cutting, bag making and laminating integrated equipment for battery pole pieces. The equipment is characterized by comprising a positive pole piece die cutting mechanism, a negative pole piece die cutting mechanism, a composite bag making mechanism and a laminating mechanism, wherein the positive pole piece die cutting mechanism comprises a positive pole unwinding device, a positive pole correction sensor, a positive pole tension adjusting assembly, a positive pole correction assembly, a positive pole tab cutting die device, a positive pole pull belt drive device and a positive pole cutter assembly; the negative pole piece die cutting mechanism comprises a negative pole unwinding device, a negative pole correction sensor, a negative pole tension adjusting assembly, a negative pole correction assembly, a negative pole tab cutting die device, a negative pole pull belt drive device and a negative pole cutter assembly.

The Chinese patent application <CIT> discloses a cutting and laminating integrated machine and relates to the technical field of lithium battery production equipment. The machine comprises a base, positive and negative pole piece unwinding and cutting devices, a rotary manipulator assembly, conveying line assemblies and laminating assemblies, wherein two positive and negative pole piece unwinding and cutting devices are arranged on the base; the rotary manipulator assembly is located behind the positive and negative pole piece unwinding and cutting devices, at least two conveying line assemblies are arranged on the base, and the manipulator assembly is used for transferring positive and negative pole pieces to the conveying line assemblies; multiple laminating assemblies are arranged on the base and the conveying line assemblies are arranged between adjacent laminating assemblies; a translation assembly is used for moving laminated cells into a topping assembly used for topping the cells.

The Japanese patent application <CIT> discloses a stacking apparatus, manufacturing a stacked electrode in which cathode sheets and anode sheets are stacked with a separator in between includes a first unit that folds a continuous separator sheet onto a first region and a second unit that alternately supplies an anode sheet and a cathode sheet to the first region in synchronization with the first unit folding the continuous separator sheet.

In order to overcome the deficiencies of the prior art, the present disclosure provides an integrated equipment of die-cutting and stacking, which can realize die-cutting and stacking of electrodes, and solve the problems of low automation and low production efficiency of the equipment in the prior art, and realize continuous stacking operation and improve stacking efficiency.

The present disclosure provides an integrated equipment of die-cutting and stacking, comprising two electrode die-cutting mechanisms, two electrode conveying mechanisms, a positive electrode feeding mechanism, a negative electrode feeding mechanism, a battery separator unwinding mechanism, and a double stacking table mechanism; wherein.

In the above structure, the first stacking table and the second stacking table have same structure; wherein, the first stacking table comprises a stacking base and a sheet-pressing assembly; the central rotating shaft passes through a center of the stacking base; each of opposite side walls of the stacking base is provided with a sheet-pressing assembly; the sheet-pressing assembly includes a sheet-pressing driving device, a rotary shaft, two rotary cams, two translation sliders and a sheet-pressing plate;.

In the above structure, the first stacking table further comprises a lifting assembly, and the lifting assembly comprises two first lifting sliding plates and a lifting driving device; the two first lifting sliding plates are respectively arranged on the opposite side walls of the stacking base; the lifting driving device is configured to drive the two first lifting sliding plates to slide up and down on the opposite side walls of the stacking base;
the rotary shaft and the sheet-pressing driving device are both installed on the first lifting sliding plate; and the first lifting sliding plate is further fixedly provided with a translation slide rail; the translation slider is slidably arranged on the translation slide rail.

In the above structure, the lifting driving device comprises a lifting motor, a driving belt, a first lifting leadscrew, a lifting block and a first lifting sliding rail;.

In the above structure, a stacking frame is fixedly installed above the stacking base; the stacking base comprises a top plate and two side plates opposite arranged; the top plate is fixedly installed on tops of the two side plates, and the stacking frame is installed on an upper surface of the top plate;
a clamping jaw is installed on the sheet-pressing plate, one end of the clamping jaw is fixed on a top of the sheet-pressing plate, and an other end of the clamping jaw extends above the stacking frame.

In the above structure, the positive electrode feeding mechanism and the negative electrode feeding mechanism have same structure; wherein the positive electrode feeding mechanism comprises a working platform, a feeding assembly, a tray shifting assembly and a returning assembly;.

In the above structure, a first transition wheel is provided under the notch of the first side vertical plate, and a first support wheel is provided on the first side vertical plate at the position between the two longitudinal conveyor belts; the feeding conveyor belt wraps around an underside of the first transition wheel, and then wraps around an upside of the first support wheel;
a second transition wheel is provided under the notch of the second side vertical plate; a second support wheel is provided on the second side vertical plate at the position between the two longitudinal conveyor belts, and the returning conveyor belt wraps around an underside of the second transition wheel and then wraps around an upside of the second support wheel.

In the above structure, the electrode die-cutting mechanism comprises a fixed box body and an electrode feeding assembly, a forming die-cutting assembly, a tab die-cutting assembly, and an electrode conveying assembly arranged on side wall of the fixed box body in sequence;
the electrode feeding assembly is configured to provide raw material to be die-cut to the first die-cutting assembly; the forming die-cutting assembly is configured to die-cut the raw material into electrodes; the tab die-cutting assembly is configured to form tabs on the electrodes.

In the above structure, the tab die-cutting assembly comprises a die-cutting support frame, a first die-cutting assembly, a second die-cutting assembly and a position adjusting assembly;.

In the above structure, the die-cutting driving device comprises a first die-cutting motor, a motor base, a second lifting sliding plate, a second lifting sliding rail, a second lifting leadscrew and a second lifting leadscrew nut; the first die-cutting motor is fixed on the motor base; the motor base is fixedly connected with the die-cutting support frame; the second lifting sliding rail is installed on a side wall of the motor base in a vertical direction, and the second lifting sliding plate is slidably installed on the second lifting sliding rail; an output shaft of the first die-cutting motor is connected with the second lifting leadscrew, the second lifting leadscrew nut is arranged on the second lifting leadscrew, and the second lifting leadscrew nut is fixed on a back of the second lifting sliding plate; the second lifting sliding plate is fixedly connected to the die-cutting upper seat;
the die-cutting driving device further comprises a vertical connecting plate; a bottom of the second lifting sliding plate is provided with a horizontal connecting plate, and a top of the vertical connecting plate is provided with two rollers in a vertical direction; the horizontal connecting plate is clamped between the two rollers, and a bottom of the vertical connecting plate is fixedly connected with the die-cutting upper seat.

The present disclosure achieves following beneficial effects. The integrated equipment of die-cutting and stacking of the present disclosure can complete the work of several previous equipments in one equipment, has a high degree of automation, can greatly improve the working efficiency of the equipment, and reduce labor intensity and labor costs. At the same time, due to the structure of the double stacking table mechanism, during the stacking operation, the first stacking table and the second stacking table can be rotatably switched. Namely, during unloading process of a first cell, the clamping and pressing for first layer of battery separator of a next cell are completed, which greatly saves the unloading time, improves the stacking efficiency of the equipment, and thus improves the production efficiency of the product.

The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to <FIG>, <FIG> and <FIG>, the present disclosure provides an integrated equipment of die-cutting and stacking, through which the die-cutting and stacking processes of electrodes are realized to produce cells. The integrated equipment of die-cutting and stacking includes two electrode die-cutting mechanisms <NUM>, two electrode conveying mechanisms <NUM>, a positive electrode feeding mechanism <NUM>, a negative electrode feeding mechanism <NUM>, a battery separator unwinding mechanism <NUM> and a double stacking table mechanism <NUM>; wherein the positive electrode feeding mechanism <NUM> and the negative electrode feeding mechanism <NUM> are respectively arranged on two sides of the double stacking table mechanism <NUM>; and one electrode conveying mechanism <NUM> is arranged between the electrode die-cutting mechanism <NUM> and the positive electrode feeding mechanism <NUM>, and another electrode conveying mechanism <NUM> is arranged between the electrode die-cutting mechanism <NUM> and the negative electrode feeding mechanism <NUM>. The battery separator unwinding mechanism <NUM> is located above the double stacking table mechanism <NUM>. The electrode die-cutting mechanisms <NUM> located on two sides of the integrated equipment are configured to die-cut the electrodes that meet the requirements. The electrodes are transported by the electrode conveying mechanism <NUM> to the positive electrode feeding mechanism <NUM> or the negative electrode feeding mechanism <NUM>. The battery separator unwinding mechanism <NUM> is located above the double stacking table mechanism <NUM>, and is used to feed the double stacking table mechanism <NUM> with a battery separator to be sandwiched between the positive electrode and the negative electrode. The double stacking table mechanism <NUM> realizes the stacking operation of the positive electrode and the negative electrode. Therefore, the integrated equipment of die-cutting and stacking of the present disclosure can complete the work of several previous equipments in one equipment, has a high degree of automation, can greatly improve the working efficiency of the equipment, and reduce labor intensity and labor costs.

As shown in <FIG>, in this embodiment, two double stacking table mechanisms <NUM> are arranged side by side on the same support frame, and have exactly the same structure. In this embodiment, only one double stacking table mechanism is explained in detail. In addition, it should be noted that a platform support frame <NUM> is also provided with a plurality of material-transferring robot arms <NUM>, which are configured to transfer the positive electrode and the negative electrode. For example, the positive electrode conveyed by the positive electrode feeding mechanism <NUM> is transferred to the double stacking table mechanism <NUM>. The structure of the material-transferring robot arm <NUM> is relatively common in the prior art, and the specific structure thereof will not be explained in this embodiment.

As shown in <FIG> and <FIG>, the present disclosure provides a specific embodiment of the double stacking table mechanism <NUM>. The double stacking table mechanism <NUM> includes a rotating shaft <NUM>, two rotating arms <NUM>, two central rotating shafts <NUM>, a first stacking table <NUM> and a second stacking table <NUM>. Two ends of the rotating shaft <NUM> are respectively rotatably mounted on tops of support bases <NUM>, and the two ends of the rotating shaft <NUM> are respectively fixedly connected to middles of the two rotating arm <NUM>. The first stacking table <NUM> and the second stacking table <NUM> are both arranged between the two rotating arms <NUM>, and are located on two sides of the rotating shaft <NUM> respectively. One central rotating shaft <NUM> passes through the first stacking table <NUM>; two ends of the one central rotating shaft <NUM> are respectively rotatably connected with an end of one rotating arm <NUM> and an end of an other rotating arm <NUM>; an other central rotating shaft <NUM> passes through the second stacking table <NUM>, two ends of the other central rotating shaft <NUM> are respectively rotatably connected with an other end of the one rotating arm <NUM> and an other end of the other rotating arm <NUM>. The first stacking table <NUM> and the second stacking table <NUM> are both used to realize the stacking of the electrodes.

Through the above structure, the rotating shaft <NUM> can be driven to rotate under the driving of power, and the rotating arms <NUM> can be driven to rotate in the vertical direction. Both the first stacking table <NUM> and the second stacking table <NUM> are rotatably connected with the rotating arms <NUM> by the central rotating shafts <NUM>, so that when the rotating arms <NUM> rotates, the first stacking table <NUM> and the second stacking table <NUM> can alternately reach a highest position. During the stacking operation, the first stacking table <NUM> and the second stacking table <NUM> can be rotatably switched. Namely, during unloading process of a first cell, the clamping and pressing for first layer of battery separator of a next cell are completed, which greatly saves the unloading time, improves the stacking efficiency of the equipment, and thus improves the production efficiency of the product.

The present disclosure provides a specific embodiment of the first stacking table <NUM> and the second stacking table <NUM>. Specifically, the first stacking table <NUM> and the second stacking table <NUM> have the same structure. Thus, only the structure of the first stacking table <NUM> is described in detail. The first stacking table <NUM> includes a stacking base <NUM> and a sheet-pressing assembly <NUM>. The central rotating shaft <NUM> passes through a center of the stacking base <NUM>, a stacking frame <NUM> is fixedly installed above the stacking base <NUM>. The stacking base <NUM> includes a top plate <NUM> and two side plates <NUM> opposite arranged. The top plate <NUM> is fixedly installed on tops of the two side plates <NUM>, and the stacking frame <NUM> is installed on an upper surface of the top plate <NUM>.

Further, each of opposite side walls of the stacking base <NUM> is provided with a sheet-pressing assembly <NUM>. The sheet-pressing assembly <NUM> includes a sheet-pressing driving device, a rotary shaft <NUM>, a rotary cam <NUM>, a translation slider <NUM> and a sheet-pressing plate <NUM>. Two rotary cams <NUM> are fixedly installed on the rotary shaft <NUM>. Each rotary cam <NUM> has an inclined guide ring, and the guide rings on the two rotary cams <NUM> are symmetrical about a radial center line of the rotary shaft <NUM>. Each of opposite side walls of the stacking base <NUM> is provided with the translation slider <NUM>. Each translation slider <NUM> is fixedly provided with a limit stop <NUM>; and the guide ring of the rotary cam <NUM> is snapped into a limit groove of the limit stop <NUM>. The sheet-pressing plate <NUM> is in a shape of "<NUM>", one end of the sheet-pressing plate <NUM> is fixedly installed on the translation slider <NUM>, and the other end of the sheet-pressing plate <NUM> extends above the stacking base <NUM>. Through this structure, when the rotary shaft <NUM> rotates, the limit stop drives the translation slider <NUM> to translate in the horizontal direction under the driving action of the rotary cam <NUM>. The two rotary cams <NUM> have the same structure and the guide rings on the rotary cams <NUM> are symmetrical about the radial center line of the rotary shaft <NUM>, so the two translation sliders can move simultaneously in opposite directions, thereby driving the sheet-pressing plates <NUM> to open and close. The sheet-pressing driving device is arranged on a side wall of the stacking base <NUM> and is used to drive the rotary shaft <NUM> to rotate. A clamping jaw <NUM> is installed on the sheet-pressing plate <NUM>, one end of the clamping jaw <NUM> is fixed on a top of the sheet-pressing plate <NUM>, and the other end of the clamping jaw <NUM> extends above the stacking frame <NUM>.

Further, the first stacking table <NUM> includes a lifting assembly, and the lifting assembly includes a first lifting sliding plate <NUM> and a lifting driving device. The first lifting sliding plate <NUM> is arranged on the opposite side walls of the stacking base <NUM>. The lifting driving device is used to drive the first lifting sliding plate <NUM> to slide up and down on the side wall of the stacking base <NUM>; the rotary shaft <NUM> and the sheet-pressing driving device are both installed on the first lifting sliding plate <NUM>; and the first lifting sliding plate <NUM> is also fixedly provided with a translation slide rail <NUM>; the translation slider <NUM> is slidably installed on the translation slide rail <NUM>. In this embodiment, as shown in <FIG>, the lifting driving device includes a lifting motor <NUM>, a driving belt <NUM>, a first lifting leadscrew <NUM>, a lifting block <NUM> and a first lifting sliding rail <NUM>; the lifting motor <NUM> is fixed on an inner wall of the stacking base <NUM>, both ends of the first lifting leadscrew <NUM> are rotatably mounted on the inner wall of the stacking base <NUM>. The first lifting leadscrew <NUM> fits the lifting block <NUM>, and the driving belt <NUM> is sleeved on a first driving wheel of the lifting motor <NUM> and a first driven wheel at one end of the first lifting leadscrew <NUM>; the lifting block <NUM> is fixedly connected with the first lifting sliding plate <NUM>; the first lifting sliding rail <NUM> is installed on an outer wall of the stacking base <NUM>, and the first lifting sliding plate <NUM> is slidably installed on the first lifting sliding rail <NUM>.

In the above embodiment, the sheet-pressing driving device includes a driving motor (not marked in the figures) and a sheet-pressing belt <NUM>. The driving motor is fixed on the first lifting sliding plate <NUM>, and a second driving wheel is installed on an end of a motor shaft of the driving motor, a second driven wheel is installed on an end of the rotary shaft <NUM>, and the sheet-pressing belt <NUM> is sleeved on the second driving wheel and the second driven wheel.

Through the above structure, the lifting assembly is installed inside the stacking base <NUM> to realize a hidden structure design, which avoids the lifting assembly from additionally occupying the volume of the first stacking table <NUM>, such that the overall structure is more compact and small. During the stacking process, the lifting assembly can drive the first lifting sliding plate <NUM> to reciprocate in the vertical direction. At the same time, the two clamping jaws <NUM> apposite arranged, driven by the rotational force of the rotary shaft <NUM>, can simultaneously open or close. The clamping jaws <NUM> can press and release the battery separator according to the control, thereby realizing the stacking operation. The first stacking table <NUM> has a compact and reasonable structure. After the cell is formed by stacking on the first stacking table <NUM>, the first stacking table <NUM> is rotated, and the clamping and pressing of the battery separator on the second stacking table <NUM> are completed while cutting the battery separator and unloading the cell. There is no need to wait for the cell on the first stacking table <NUM> to be unloaded, thereby shortening the time for cutting the battery separator and unloading the cell in each stacking cycle, and improving the efficiency of stacking. The stacking operation is performed on the first stacking table <NUM> and the second stacking table <NUM> one by one, which prevent double layers from placing on the same stacking table, avoid damaging the battery cells, and improve the yield of products.

As shown in <FIG>, the present disclosure provides a specific embodiment for the positive electrode feeding mechanism <NUM> and the negative electrode feeding mechanism <NUM>. Since the structures of the positive electrode feeding mechanism <NUM> and the negative electrode feeding mechanism <NUM> are completely the same, only the structure of the positive electrode feeding mechanism <NUM> is described in detail.

The positive electrode feeding mechanism <NUM> includes a working platform <NUM>, a feeding assembly, a tray shifting assembly and a returning assembly; the feeding assembly includes a feeding conveyor belt <NUM> and two first side vertical plates <NUM> fixed on the working platform <NUM> in parallel. The feeding conveyor belt <NUM> is installed on a side of the first side vertical plate <NUM>, and the feeding conveyor belt <NUM> is used to transfer the feeding tray <NUM> above the first side vertical plate <NUM>. The returning assembly includes a returning conveyor belt <NUM> and two second side vertical plates <NUM> fixed on the working platform <NUM> in parallel. The returning conveyor belt <NUM> is installed on a side of the second side vertical plate <NUM>, and the returning conveyor belt <NUM> is used to transfer the feeding tray <NUM> above the second side vertical plate <NUM>. The tray shifting assembly includes two longitudinal conveyor belts <NUM> arranged in parallel; the longitudinal conveyor belt <NUM> is perpendicular to the feeding conveyor belt <NUM>;each of the first side vertical plate <NUM> and the second side vertical plate <NUM> is provided with a notch for accommodating the longitudinal conveyor belt <NUM>; and the feeding conveyor belt <NUM> is also provided on the first side vertical plate <NUM> at a position between the two longitudinal conveyor belts <NUM>, and the returning conveyor belt <NUM> is also provided on the second side vertical plate <NUM> at a position between the two longitudinal conveyor belts <NUM>. In this embodiment, a first transition wheel (not marked in the figures) is provided under the notch of the first side vertical plate <NUM>, and a first support wheel <NUM> is provided on the first side vertical plate <NUM> at the position between the two longitudinal conveyor belts <NUM>. The feeding conveyor belt <NUM> wraps around an underside of the first transition wheel, and then wraps around an upside of the first support wheel <NUM>. A second transition wheel is provided under an notch of the second side vertical plate <NUM>. A second support wheel <NUM> is provided on the second side vertical plate <NUM> at the position between the two longitudinal conveyor belts <NUM>, and the returning conveyor belt 405wraps around an underside of the second transition wheel and then wraps around an upside of the second support wheel <NUM>.

Through the above structure, the feeding tray <NUM> is conveyed above the two first side vertical plates <NUM> through the feeding conveyor belt <NUM>. The feeding conveyor belt <NUM> is wound on a plurality of pulleys, and rotated by motor. This structure belongs to the existing structure and is not described in this embodiment. When the feeding tray <NUM> is transferred to an end of the feeding conveyor belt <NUM>, the feeding tray <NUM> is shifted to the longitudinal conveyor belt <NUM>, such that the electrodes are fed. After the feeding is completed, the empty feeding tray is returned to the returning conveyor belt <NUM> by the feeding conveyor belt <NUM>. Under the driving of the returning conveyor belt <NUM>, the empty feeding tray is discharged. During this process, since the first side vertical plate <NUM> between the two longitudinal conveyor belts <NUM> is also provided with the feeding conveyor belt <NUM>, and the second side vertical plate <NUM> between the two longitudinal conveyor belts 407is also provided with the returning conveyor belt <NUM>, the feeding tray will not get stuck when the feeding tray <NUM> moves from the feeding conveyor belt <NUM> to the longitudinal conveyor belt <NUM>, and the empty feeding tray moves from the longitudinal conveyor belt <NUM> to the returning conveyor belt <NUM>, which facilitates the transfer of the feeding tray and improves the transfer efficiency. The electrode feeding mechanism of the disclosure can realize the automatic feeding of the electrode and the automatic recovery of the feeding tray, improve the feeding efficiency, have a high degree of automation and low cost.

In the above structure, the feeding assembly further includes a feeding baffle <NUM>, which is parallel to the first side vertical plates <NUM> and located outside the two first side vertical plates <NUM>. The returning assembly further includes a returning baffle <NUM>, which is parallel to the second side vertical plates <NUM> and located outside the two second side vertical plates <NUM>; the tray shifting assembly further includes a longitudinal baffle <NUM>, which is perpendicular to the feeding baffle <NUM> and located at an end of the feeding conveyor belt <NUM>. In addition, a front end of the feeding baffle <NUM> is provided with inclined guide pieces <NUM>. An inlet for the feeding tray <NUM> is formed between the two guide pieces <NUM>. Through the functions of the feeding baffle <NUM>, the returning baffle <NUM> and the longitudinal baffle <NUM>, the position of the feeding tray <NUM> is limited to avoid the position of the feeding tray <NUM> from shifting. The guide pieces <NUM> help the feeding tray <NUM> to move from the inlet to the feeding conveyor belt <NUM>, thereby preventing the feeding tray <NUM> from being stuck during the conveying process. In addition, the feeding baffle <NUM>, the returning baffle <NUM> and the longitudinal baffle <NUM> are all fixed on a top of a support column <NUM>, and the support column <NUM> is fixed on the working platform <NUM>.

As a preferred embodiment, as shown in <FIG>, the tray shifting assembly further includes a longitudinal driving shaft <NUM>, a longitudinal driven shaft (not marked in the figures), a longitudinal driving belt <NUM> and a power motor (not marked in the figures); the longitudinal conveyor belt <NUM> is sleeved on the longitudinal driving shaft <NUM> and the longitudinal driven shaft; one end of the longitudinal driving shaft <NUM> is provided with a driven pulley, and the power motor is located below the longitudinal conveyor belt <NUM>. A driving pulley is installed on an output shaft of the power motor, and the longitudinal driving belt <NUM> is sleeved on the driving pulley and the driven pulley.

In the above embodiment, a pinch roller mechanism and a separator cutting mechanism are further provided below the battery separator unwinding mechanism <NUM>. The pinch roller mechanism is used to send the battery separator to a designated position after clamping the battery separator. The separator cutting mechanism is used to cut the battery separator. Since the structures of the pinch roller mechanism and the separator cutting mechanism are relatively common in the prior art, they will not be described in detail in this embodiment.

As shown in <FIG>, the present disclosure provides a specific embodiment of the electrode die-cutting mechanism <NUM>. The electrode die-cutting mechanism <NUM> includes a fixed box body <NUM> and an electrode feeding assembly <NUM>, a forming die-cutting assembly <NUM>, a tab die-cutting assembly <NUM>, and an electrode conveying assembly <NUM> arranged on side wall of the fixed box body <NUM> in sequence. The electrode feeding assembly <NUM> is used to provide raw material to be die-cut to the first die-cutting assembly <NUM>; the forming die-cutting assembly <NUM> is used to die-cut the raw material into electrodes; the tab die-cutting assembly <NUM> is used to form tabs on the electrodes; and the electrode conveying assembly <NUM> is used to convey the electrodes die-cut and then the electrodes die-cut are transported through the electrode conveying mechanism <NUM>. Generally, the electrode conveying mechanism <NUM> adopts conveyor belts and mechanical arms, which will not be described in detail in this embodiment.

As shown in <FIG>, the present disclosure provides a specific embodiment of the tab die-cutting assembly <NUM>, through which the tabs on the electrode can be cut. The tab die-cutting assembly <NUM> includes a die-cutting support frame <NUM>, a first die-cutting assembly <NUM>, a second die-cutting assembly <NUM> and a position adjusting assembly; the first and second die-cutting assemblies <NUM> and <NUM> are installed side by side on the die-cutting support frame <NUM>. In this embodiment, the die-cutting support frame includes a first horizontal plate <NUM>, a second horizontal plate <NUM> and a vertical support plate <NUM>; the first horizontal plate <NUM> is fixed on a top of the vertical support plate <NUM>. The second horizontal plate <NUM> is fixed on a bottom end of the vertical support plate <NUM>. The first horizontal plate <NUM> and the second horizontal plate <NUM> are located on the same side of the vertical support plate <NUM>. The first die-cutting assembly <NUM> and the second die-cutting assemblies <NUM> are fixed side by side on the first horizontal plate <NUM>. In this embodiment, the structures of the first die-cutting assemblies <NUM> and the second die-cutting assemblies <NUM> are the same, so only the first die-cutting assembly <NUM> is described in this embodiment. The first die-cutting assembly <NUM> includes a die-cutting upper seat <NUM>, a die-cutting lower seat <NUM>, and a die-cutting driving device that drives the die-cutting upper seat <NUM> to move up and down. The die-cutting driving device is fixed on the first horizontal plate <NUM>.

Further, in the above embodiment, the position adjusting assembly includes a lower bottom plate <NUM>, a first adjusting wheel <NUM>, a translation slide rail <NUM>, a second adjusting wheel <NUM>, a first screw <NUM> and a second screw <NUM>. The translation slide rail <NUM> is fixed on an upper surface of the second horizontal plate <NUM>;the die-cutting lower seat <NUM> of the first die-cutting assembly <NUM> and the die-cutting lower seat <NUM> of the second die-cutting assembly <NUM> are respectively fixed on one lower bottom plate <NUM>,and the two lower bottom plates <NUM> are slidably arranged on the translation slide rail <NUM> side by side, and the lower surfaces of the two lower bottom plates <NUM> are fixedly provided with nuts (not marked in the figure). The first adjusting wheel <NUM> is connected with the first screw <NUM>. The second adjusting wheel <NUM> is connected with the second screw <NUM>. The first screw <NUM> is arranged under one lower bottom plate <NUM>, and passes through the nut on the one lower bottom plate <NUM>; the second screw <NUM> is provided below the other lower bottom plate <NUM> and passes through the nut on the other lower bottom plate <NUM>.

Through the above structure, when the first adjusting wheel <NUM> is rotated, the first screw <NUM> is driven to rotate, and through the cooperation of the first screw <NUM> and the nut, one of the two lower bottom plates <NUM> is driven to slide on the translation slide rail <NUM>. Similarly, when the second adjusting wheel <NUM> is rotated, another lower bottom plate <NUM> is driven to slide on the translation slide rail <NUM>. The distance between the two die-cutting lower seats <NUM> of the first die-cutting assembly <NUM> and the second die-cutting assembly <NUM> is adjusted by rotating the first adjusting wheel <NUM> and the second adjusting wheel <NUM> in different directions, thereby realizing the die-cutting of the electrodes between the two die-cutting upper seats and the two die-cutting lower seats. Therefore, the integrated equipment can die-cut electrodes with different sizes, so as to improves the applicability and general performance of the die-cutting equipment, reduces the cost of the die-cutting equipment, and a multi-purpose machine is realized.

As a preferred embodiment, as shown in <FIG>, the present disclosure provides a specific embodiment of the die-cutting driving device. The die-cutting driving device includes a first die-cutting motor <NUM>, a motor base <NUM>, a second lifting sliding plate <NUM>, a second lifting sliding rail <NUM>, a second lifting leadscrew (not marked in the figures) and second lifting leadscrew nut (not marked in the figures); the first die-cutting motor <NUM> is fixed on the motor base <NUM>, the motor base <NUM> is fixedly connected with the die-cutting support frame <NUM>; the second lifting sliding rail <NUM> is installed on a side wall of the motor base <NUM> in a vertical direction, and the second lifting sliding plate <NUM> is slidably installed on the second lifting sliding rail <NUM>. The output shaft of the first die-cutting motor <NUM> is connected with the second lifting leadscrew, the second lifting leadscrew nut is arranged on the second lifting leadscrew, and the second lifting leadscrew nut is fixed on a back of the second lifting sliding plate <NUM>, which is fixedly connected to the die-cutting upper seat <NUM>. Thus, through the rotation of the first die-cutting motor <NUM>, the second lifting sliding plate <NUM> can be driven to rise and fall, so as to drive the die-cutting upper seat <NUM> to rise and fall. The electrodes are die-cut through the relative movement of die-cutting upper seat <NUM> and die-cutting lower seat <NUM>.

In this embodiment, the die-cutting driving device further includes a vertical connecting plate <NUM>; a bottom of the second lifting sliding plate <NUM> is provided with a horizontal connecting plate <NUM>, and a top of the vertical connecting plate <NUM> is provided with two rollers in a vertical direction; the horizontal connecting plate <NUM> is clamped between the two rollers, and the bottom of the vertical connecting plate <NUM> is fixedly connected with the die-cutting upper seat <NUM>. In this way, when the position of one of the lower bottom plates <NUM> or two of the lower bottom plates <NUM> is adjusted, a horizontal displacement can be generated between the vertical connecting plate <NUM> and the second lifting sliding plate <NUM>, which does not affect that the die-cutting upper seat <NUM> is driven by the second lifting sliding plate <NUM> to rise and fall. The die-cutting driving device has an ingenious structure, which facilitates the adjustment of the positions of the die-cutting upper seat <NUM> and the die-cutting lower seat <NUM>. In addition, a bearing seat is fixedly installed on an upper surface of the second horizontal plate <NUM>, and a top end of the first screw rod <NUM> and a top end of the second screw rod <NUM> are installed in the corresponding bearing seats.

In addition, an upper dust removal assembly <NUM> and a lower dust removal assembly <NUM> are further provided in front of the electrode feeding assembly <NUM>. As shown in <FIG>, the structures of the upper dust removal assembly <NUM> and the lower dust removal assembly <NUM> are exactly the same. In this embodiment, only the upper dust removal assembly is described in detail. The upper dust removal assembly includes a dust removal motor <NUM>, a motor fixing plate <NUM>, a guide block fixing plate <NUM> and a dust removal block <NUM>; the dust removal motor <NUM> is fixedly installed on the motor fixing plate <NUM>, and the guide block fixing plate <NUM> is arranged on between the motor fixing plate <NUM> and the dust removal block <NUM>; a motor shaft of the dust removal motor <NUM> passes through the guide block fixing plate <NUM> and is connected with the dust removal block <NUM>. In this embodiment, the dust removal motor <NUM> is a telescopic motor, which can drive the dust removal block <NUM> move up and down. When the electrode needs to be adsorbed, the dust removal motor <NUM> drives the dust removal block <NUM> to protrude. When the dust removal is completed, the dust removal block <NUM> releases the electrode, and the dust removal motor <NUM> drives the dust removal block <NUM> to retract, so as to facilitate the dust removal of the next electrode. Further, a plurality of bar-shaped guide blocks <NUM> are fixedly arranged on a side of the guide block fixing plate <NUM> facing the dust removal block <NUM>; the dust removal block <NUM> is provided with a plurality of guide holes, and an end of a bar-shaped guide block <NUM> is inserted into the guide hole of the dust removal block <NUM>; a side of the dust removal block <NUM> facing away from the guide block fixing plate <NUM> is provided with a plurality of strip-shaped exhaust ports <NUM>, and the plurality of strip-shaped exhaust ports <NUM> are parallel. A plurality of vacuum suction holes <NUM> are provided between adjacent strip-shaped exhaust ports <NUM>.

In this embodiment, the dust removal block <NUM> is provided with three strip-shaped exhaust ports <NUM> side by side. The strip-shaped exhaust ports <NUM> are used for blowing air outward. The vacuum suction holes <NUM> between the adjacent strip-shaped exhaust ports <NUM> are all arranged in a straight line. When the electrode needs to be dedusted, the dust removal block <NUM> is pressed on the electrode, and the electrode is sucked by the vacuum suction hole <NUM> to prevent the electrode from falling. At the same time, the strip exhaust port <NUM> blows air outward to realize the dust removal of electrodes.

In the present disclosure, since a plurality of strip-shaped exhaust ports <NUM> are arranged side by side on the dust removal block <NUM>, dust can be removed from all parts of the electrode; and at the same time, the plurality of vacuum suction holes <NUM> can suck the electrode to prevent the electrodes from falling off during the dust removal process. Compared with the technical solution of dust removal by brushes in the prior art, the technical solution of the present disclosure has better dust removal effect and improves dust removal efficiency. The dust removal of two electrodes can be realized by two upper dust removal assemblies with the same structure.

Claim 1:
An integrated equipment of die-cutting and stacking, characterized in that the integrated equipment comprises
two electrode die-cutting mechanisms (<NUM>),
two electrode conveying mechanisms (<NUM>),
a positive electrode feeding mechanism (<NUM>),
a negative electrode feeding mechanism (<NUM>),
a battery separator unwinding mechanism (<NUM>), and
a double stacking table mechanism (<NUM>); wherein
the positive electrode feeding mechanism (<NUM>) and the negative electrode feeding mechanism (<NUM>) are respectively arranged on two sides of the double stacking table mechanism (<NUM>); and one electrode conveying mechanism (<NUM>) is arranged between the electrode die-cutting mechanism (<NUM>) and the positive electrode feeding mechanism (<NUM>), and another electrode conveying mechanism (<NUM>) is arranged between the electrode die-cutting mechanism (<NUM>) and the negative electrode feeding mechanism (<NUM>); the battery separator unwinding mechanism (<NUM>) is located above the double stacking table mechanism (<NUM>);
the double stacking table mechanism (<NUM>) comprises a rotating shaft (<NUM>), two rotating arms (<NUM>), two central rotating shafts (<NUM>), a first stacking table (<NUM>) and a second stacking table (<NUM>); two ends of the rotating shaft (<NUM>) are respectively fixedly connected to middles of the two rotating arms (<NUM>); the first stacking table (<NUM>) and the second stacking table (<NUM>) are both arranged between the two rotating arms (<NUM>), and are located on two sides of the rotating shaft (<NUM>) respectively; one central rotating shaft (<NUM>) passes through the first stacking table (<NUM>), two ends of the one central rotating shaft (<NUM>) are respectively rotatably connected with an end of one rotating arm (<NUM>) and an end of an other rotating arm (<NUM>); another central rotating shaft (<NUM>) passes through the second stacking table (<NUM>), two ends of the other central rotating shaft (<NUM>) are respectively rotatably connected with an other end of the one rotating arm (<NUM>) and an other end of the other rotating arm (<NUM>); the first stacking table (<NUM>) and the second stacking table (<NUM>) are both configured to realize stacking of electrodes.