CN222705573U - Hot pressing cutting device and battery manufacturing equipment - Google Patents

Abstract

The embodiments of the present application provide a hot pressing and cutting device and a battery manufacturing device. The hot pressing and cutting device is used to heat seal and cut the isolation membrane on one side of the electrode assembly. The hot pressing and cutting device includes a jig module and a hot pressing and cutting module. The jig module has a positioning surface, and the positioning surface is used to carry the electrode assembly. The jig module includes a positioning component, and the positioning component is used to position the electrode assembly on the positioning surface; the hot pressing and cutting module cooperates with the jig module to heat seal the isolation membrane on one side of the electrode assembly and cut the excess isolation membrane on the electrode assembly. The technical solution provided by the present application has a simple structure, can achieve heat sealing and cutting of the isolation membrane of the electrode assembly, and has higher processing efficiency.

Description

Hot pressing cutting device and battery manufacturing equipment

Technical Field

The application relates to the technical field of batteries, in particular to a hot pressing cutting device and battery manufacturing equipment.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.

Before the separator of the electrode assembly separates positive and negative materials and is not immersed in electrolyte in the early test and verification production stage of the battery, a part of the separator can be reserved to extend outwards in the process of wrapping the pole pieces, the redundant separator needs to be cut off after the heat sealing process, the heat sealing and cutting processes are usually required to be independently completed on two sets of equipment, and the problems of complex process and low efficiency exist.

Disclosure of utility model

The application provides a hot-pressing cutting device and battery manufacturing equipment, which have simple structure, can realize the heat sealing and cutting of a separation film of an electrode assembly, and have higher processing efficiency.

The application is realized by the following technical scheme:

In a first aspect, an embodiment of the present application provides a thermocompression bonding apparatus, where the thermocompression bonding apparatus is configured to heat-seal and bond a separator on one side of an electrode assembly, the thermocompression bonding apparatus includes a jig module and a thermocompression bonding module, the jig module has a positioning surface, the positioning surface is configured to carry the electrode assembly, the jig module includes a positioning component, the positioning component is configured to position the electrode assembly on the positioning surface, and the thermocompression bonding module is configured to heat-seal the separator on one side of the electrode assembly with the jig module, and bond redundant separators on the electrode assembly.

In this scheme, treat heat-seal and cut electrode assembly through the tool module and bear and fix a position, locating component and electrode assembly cooperation to be fixed in the locating surface with electrode assembly, keep electrode assembly's position on the locating surface motionless, improved the hot pressing and cut the precision that the module heat-sealed and cut of barrier film to electrode assembly one side. And then the hot pressing cutting module is matched with the jig module, the multi-layer isolating film to be heat-sealed on one side of the electrode assembly is heat-sealed and combined together, and redundant isolating films on the electrode assembly are synchronously cut, namely, the heat sealing and cutting two-step working procedures of the isolating film on the electrode assembly can be realized at one time through the hot pressing cutting module.

According to some embodiments of the application, the positioning assembly is used to abut at least two opposite sides of the electrode assembly to position the electrode assembly.

In the scheme, the positioning assembly can be propped against at least two opposite sides of the electrode assembly, limiting on two sides of the electrode assembly can be achieved, the positioning assembly is contacted with two opposite sides of the electrode assembly, interference phenomenon with the hot pressing cutting module is not easy to occur, and the hot pressing cutting module is beneficial to heat sealing and cutting of the electrode assembly.

According to some embodiments of the application, the positioning assembly includes a plurality of abutments which cooperate together for abutting the remaining three sides of the electrode assembly, except for the side to be heat sealed and cut.

In the scheme, the plurality of propping pieces prop against the other three sides of one side of the electrode assembly except for heat sealing and cutting, so that the electrode assembly except for one side of the electrode assembly except for heat sealing and cutting has the propping pieces to realize propping and limiting functions, the positioning effect of the electrode assembly is better, and the electrode assembly is not easy to move.

According to some embodiments of the application, the jig module further comprises a carrying table, at least one of the plurality of supporting members is movably arranged on the carrying table, so as to be used for adjusting the area size of the area surrounded by the plurality of supporting members.

In the scheme, the supporting pieces are movably arranged on the bearing table, so that the area of the area surrounded by the supporting pieces can be adjusted, the positioning requirements of the electrode assemblies of different types can be met, and the application range of the jig module is wider.

According to some embodiments of the application, the supporting piece comprises a first supporting piece, the first supporting piece is used for supporting the first side of the electrode assembly, which is provided with the electrode lug, and the second side of the electrode assembly, which is opposite to the electrode lug, the first supporting piece is movably arranged on the bearing table along a first direction and a second direction, the first direction is the length direction of the electrode assembly, and the second direction is the width direction of the electrode assembly.

In the above scheme, because one side of the electrode assembly is provided with the convex lug, the first supporting piece can be movably arranged on the bearing table in the first direction and the second direction, namely, the first supporting piece can be subjected to position adjustment in the two directions, so that the first supporting piece can be subjected to position adjustment in the second direction, the first supporting piece can be staggered with the lug of the electrode assembly, the risk that the first supporting piece interferes with the lug is reduced, and then the position of the first supporting piece in the first direction is adjusted, so that the first supporting piece can be in contact with the corresponding side of the electrode assembly, and the limiting function of the electrode assembly is realized.

According to some embodiments of the application, the fixture module further comprises a cover plate, wherein the cover plate is arranged on the bearing table in a reversible manner, and the cover plate is used for covering one side of the electrode assembly, which is away from the positioning surface.

In the above-mentioned scheme, in order to further improve electrode assembly's location effect, through the setting of apron, the apron can be covered and is located electrode assembly and deviate from one side of locating surface to realize the tight location of clamp of thickness direction to electrode assembly, electrode assembly's location effect is better.

According to some embodiments of the application, the hot press cutting module comprises a vertical frame, a hot press head and a first driving piece, wherein the first driving piece is arranged on the vertical frame and is used for driving the hot press head to move along a third direction so as to enable the hot press head to be close to or far from the positioning assembly, and the third direction is perpendicular to the positioning surface.

In the above scheme, the hot pressing head can move along the third direction under the action of the first driving piece, namely, the hot pressing head can be close to or far away from the electrode assembly on the positioning surface through the first driving piece, so that the electrode assembly does not need to adjust the position after the positioning is finished, and the heat sealing of the isolating film on one side of the electrode assembly can be realized only by driving the hot pressing head to move through the first driving piece.

According to some embodiments of the application, the hot press cutting module further comprises a first lifting frame and a first guiding part, wherein the first lifting frame is connected with the first driving piece, the first lifting frame is used for mounting the heating pressure head, the first guiding part is arranged between the first lifting frame and the vertical frame, and the first guiding part is used for guiding the first lifting frame to move along a third direction relative to the vertical frame.

In the above scheme, the setting of first guiding part, under the effect of first driving piece, first guiding part can play the function of direction to first crane for first crane can be accurate steady along the third direction goes up and down, realizes the function of the accurate heat-seal to the barrier film of electrode assembly one side.

According to some embodiments of the application, the hot press cutting module further comprises a cutter and a second driving piece, wherein the second driving piece is arranged on the vertical frame and is used for driving the cutter to move along a third direction so as to enable the cutter to be close to or far away from the positioning assembly.

In the above scheme, the cutter can move along the third direction under the action of the second driving piece, namely, the cutter can be close to or far away from the electrode assembly on the positioning surface through the second driving piece, so that the electrode assembly does not need to adjust the position after positioning, and the cutting action of the isolating film on one side of the electrode assembly can be realized only by driving the cutter to move through the second driving piece.

According to some embodiments of the application, the hot press cutting module further comprises a second lifting frame and a second guiding part, wherein the second lifting frame is connected with the second driving piece, the second lifting frame is used for being provided for the installation of the cutter, the second guiding part is arranged between the second lifting frame and the vertical frame, and the second guiding part is used for guiding the second lifting frame to move along a third direction relative to the vertical frame.

In the above-mentioned scheme, the setting of second guiding part, under the effect of second driving piece, the function of direction can be played to the second crane to second guiding part for the second crane can be accurate steady goes up and down along the third direction, ensures the function of accurate cutting to the barrier film of electrode assembly one side.

According to some embodiments of the application, the hot pressing head is provided with a avoidance hole through which the cutter penetrates, and the cutter is used for cutting the redundant isolating film on one side of the electrode assembly after penetrating through the avoidance hole.

In the scheme, because the heat seal is longer than the time of cutting, through being provided with the hole of dodging that supplies the cutter to wear to establish on the hot pressing head, at the in-process of hot pressing head to the barrier film heat seal like this, the cutter can pass the hole of dodging on the hot pressing head under the effect of second driving piece, cuts unnecessary barrier film, and the heat seal of barrier film and the cutting on the electrode assembly can go on in step promptly, need not adjust electrode assembly's position and repositioning, improved the barrier film heat seal greatly and cut efficiency, shortened process time.

According to some embodiments of the application, the hot press cutting module further comprises a position adjusting assembly, wherein the position adjusting assembly is arranged between the second lifting frame and the cutter, the position adjusting assembly is used for adjusting the position of the cutter in a second direction, the second direction is the width direction of the electrode assembly, and the second direction is perpendicular to the third direction.

In the above scheme, through being provided with position control subassembly at second crane and cutter, position control subassembly can adjust the cutter in the ascending position of second direction, can finely tune the position of cutter according to the actual needs of cutting of barrier film, and application scope is wider.

According to some embodiments of the application, the position adjusting assembly comprises a mounting seat, an adjusting screw, a tool rest and a third guide part, wherein the mounting seat is arranged on the second lifting frame, the adjusting screw is arranged in an extending mode along a second direction and is rotatably mounted on the mounting seat, the tool rest is used for mounting a cutter, the tool rest is in threaded fit with the adjusting screw, the third guide part is arranged on the second lifting frame in an extending mode along the second direction, and the tool rest is in sliding fit with the third guide part.

In the above scheme, adjusting screw passes through the mount pad and rotates to be installed on the second crane, and the knife rest can supply the cutter to install, screw thread fit between knife rest and the adjusting screw, through rotatory adjusting screw, under the direction effect of third guiding portion to the knife rest, can prevent that the knife rest from following adjusting screw and rotating to order about the knife rest to carry out position control along third guiding portion in the second direction, control adjusting screw's rotation amount, alright accurate control knife rest in the position control volume of second direction, regulation convenient and fast, easy operation, and the regulation precision is higher.

According to some embodiments of the application, the hot pressing and cutting device further comprises a frame, wherein the frame is used for bearing the jig module and the hot pressing and cutting module, and a movable wheel is arranged at the bottom of the frame.

In the scheme, the rack can be used for installing the jig module and the hot pressing cutting module, the bearing function is provided for the jig module and the hot pressing cutting module, the hot pressing cutting device can transfer positions according to requirements through the movable wheels arranged at the bottom of the rack, and the flexibility is high.

In a second aspect, an embodiment of the present application further provides a battery manufacturing apparatus, where the battery manufacturing apparatus includes the hot press cutting device of any of the foregoing embodiments.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a hot pressing and cutting device according to some embodiments of the present application;

FIG. 2 is a schematic view of a hot press cutting apparatus according to another embodiment of the present application;

Fig. 3 is a top view illustrating positioning of a jig module and an electrode assembly in a thermo-compression cutting apparatus according to some embodiments of the present application;

FIG. 4 is a side view of a thermal compression cutting apparatus according to some embodiments of the present application;

FIG. 5 is an enlarged schematic view of FIG. 4A;

FIG. 6 is an enlarged schematic view of B in FIG. 4;

FIG. 7 is a schematic view of a hot press cutting apparatus according to some embodiments of the present application;

fig. 8 is a schematic view illustrating a structure of the hot press cutting apparatus of fig. 7 at another angle.

The icons are 100-hot press cutting devices, 10-jig modules, 11-bearing tables, 111-positioning surfaces, 12-positioning components, 120-supporting components, 121-first supporting components, 1211-adjusting holes, 122-second supporting components, 123-first sliding rails, 1231-connecting holes, 13-cover plates, 20-hot press cutting modules, 21-vertical frames, 211-vertical columns, 212-mounting plates, 22-hot press heads, 221-avoidance holes, 23-first driving components, 24-first lifting frames, 25-first guiding parts, 26-cutters, 27-second driving components, 28-second lifting frames, 29-second guiding parts, 30-position adjusting components, 31-mounting seats, 32-adjusting screws, 33-tool holders, 34-third guiding parts, 40-racks, 50-moving wheels, 200-electrode components, 201-isolating films, X-first directions, Y-second directions and Z-third directions.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used in the description of this application in this application are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of this application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, directly connected, indirectly connected through an intermediary, or may be in communication with the interior of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate that a exists alone, while a and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

The term "plurality" as used herein means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the present application, the battery may include a lithium ion battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiment of the present application. The battery may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc., and the embodiment of the present application is not limited thereto.

Reference to a battery in accordance with an embodiment of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The material of the separator may be PP (polypropylene) or PE (polyethylene).

The battery cell also comprises a packaging film and a shell, wherein the packaging film is coated outside the electrode assembly, and the shell encapsulates the electrode assembly coated with the packaging film to form the battery cell. The packaging film may be mylar film (mylar film) and the outer shell may be aluminum. After the electrode assembly is molded, the Mylar coating process and the shell entering process are performed to complete the encapsulation of the Mylar and the shell. The Mylar film has the functions of sealing and protecting the electrode assembly, and can effectively insulate the electrode assembly and the shell from each other, so that the internal short circuit of the battery cell is avoided. The shell plays a role in protection.

Currently, solid-state batteries have incomparable advantages in terms of safety, energy density and the like, and are an important direction for the development of the future lithium battery industry. In the preparation process of the solid-state battery, the electrode assembly is a laminated electrode assembly, after the lamination of the positive electrode plate and the negative electrode plate in the electrode assembly and the isolating film are stacked and placed, an isolating film area needing high-temperature hot-pressing sealing is generated, and after the high-temperature high-pressure sealing is finished, the redundant isolating film is needed to be cut off again, so that the processes of shell entering, liquid injection and the like are further finished. However, the existing device has a single structure and function, such as only a heat sealing or cutting function, and the heat sealing and cutting procedures of the electrode assembly are usually required to be independently completed on two sets of equipment, so that the problems of complex process and low efficiency exist.

In view of this, in order to solve the problem that the heat sealing and cutting of the redundant separator of the electrode assembly are low in processing efficiency, some embodiments of the present application provide a heat pressing and cutting device, which includes a jig module and a heat pressing and cutting module, wherein the jig module has a positioning surface for bearing the electrode assembly, the jig module includes a positioning assembly for positioning the electrode assembly on the positioning surface, and the heat pressing and cutting module cooperates with the jig module for heat sealing the separator on one side of the electrode assembly and cutting the redundant separator on the electrode assembly.

In such hot pressing cutting device, through hot pressing cutting module and tool module cooperation, carry out the heat-seal with the multilayer barrier film that treats of electrode assembly one side and combine together to carry out synchronous cutting to unnecessary barrier film on the electrode assembly, namely can once only realize the heat-seal and the two steps processes of cutting of barrier film on the electrode assembly through the hot pressing cutting module, compare in prior art heat-seal and the independent processing of cutting the step, when having shortened the processing flow, reduced a lot of repeated material loading action, improved production efficiency.

Referring to fig. 1, 2 and 3, a thermal pressing and cutting device 100 is shown in the embodiment of the present application, the thermal pressing and cutting device 100 is used for heat sealing and cutting a separator 201 on one side of an electrode assembly 200, the thermal pressing and cutting device 100 includes a jig module 10 and a thermal pressing and cutting module 20, the jig module 10 has a positioning surface 111, the positioning surface 111 is used for carrying the electrode assembly 200, the jig module 10 includes a positioning component 12, the positioning component 12 is used for positioning the electrode assembly 200 on the positioning surface 111, the thermal pressing and cutting module 20 cooperates with the jig module 10 for heat sealing the separator 201 on one side of the electrode assembly 200, and cutting the redundant separator 201 on the electrode assembly 200.

In the preparation process of the (semi) solid-state battery, after stacking and placing the positive and negative electrode plate laminates and the isolating film 201 in the electrode assembly 200, the isolating film 201 region requiring high-temperature hot-pressing sealing is generated, and after the multi-layer stacked isolating film 201 is heat-sealed under high temperature and high pressure, redundant isolating films 201 are required to be cut off again, so that the processes of shell entering, liquid injection and the like are further completed.

The jig module 10 is a positioning tool, and the function of the jig module 10 is to perform the functions of bearing and positioning on the electrode assembly 200, so that the relative position of the electrode assembly 200 can be maintained when the heat pressing and cutting module 20 performs heat sealing and cutting on the isolating film 201 on one side of the electrode assembly 200.

The positioning assembly 12 has a function of positioning the electrode assembly 200 on the jig module 10, so that the position of the electrode assembly 200 is not changed during heat sealing or cutting, and the machining precision is ensured.

The positioning assembly 12 may be mated with at least one side of the electrode assembly 200, i.e., the positioning assembly 12 may be mated with one or more sides of the electrode assembly 200, depending on the configuration of the positioning assembly 12. For example, the positioning assembly 12 may be a positioning member such as a clamping cylinder, a hold down cylinder, a vacuum chuck, or a hold-down 120.

When the positioning component 12 is a vacuum absorption component, the positioning component 12 can be in adsorption fit with the bottom surface of the electrode component 200, negative pressure is generated on the bottom of the electrode component 200 by using the vacuum absorption component, the electrode component 200 is fixed on the jig module 10 in an adsorption mode, and the positioning function can be provided for the electrode component 200, namely, the positioning component 12 is matched with one side of the bottom surface of the electrode component 200.

In the case that the positioning assembly 12 is a pressing cylinder, the pressing cylinder may contact the top surface of the electrode assembly 200 to provide a pressing force to the electrode assembly 200, thereby positioning the electrode assembly 200 on the jig module 10.

In the case that the positioning assembly 12 is a clamping cylinder, the electrode assembly 200 may be positioned by clamping the electrode assembly 200 at opposite sides using the clamping cylinder. That is, when the positioning assembly 12 is a clamping cylinder or the abutment 120, then the positioning assembly 12 may be engaged with multiple sides of the electrode assembly 200 to achieve positioning fixation of the electrode assembly 200.

The thermo-compression cutting module 20 integrates dual functions of thermo-compression and cutting, and the thermo-compression cutting module 20 serves to heat-seal and bond together the multi-layered separator 201 on one side of the electrode assembly 200 on the jig module 10 and cut the surplus portion of the heat-sealed separator 201. The hot pressing cutting device can be suitable for a laboratory, the electrode assembly 200 can reserve a part of the isolating film 201 in the process of wrapping the pole piece in the early test and verification production stage, and the isolating film 201 is cut off after the heat sealing process.

The heat sealing and cutting actions of the electrode assembly 200 can be realized by matching the heat pressing and cutting module 20 and the jig module 10, and various conditions can be adopted. The first case is that the hot pressing and cutting module 20 is stationary, the jig module 10 moves, and the jig module 10 drives the electrode assembly 200 to move to the hot pressing and cutting module 20 for the hot pressing and cutting module 20 to perform hot pressing and cutting. In the second case, the thermo-compression cutting module 20 moves, the jig module 10 is stationary, and the thermo-compression cutting module 20 moves to a target position to perform a heat sealing and cutting operation in cooperation with the electrode assembly 200 of the jig module 10. In the third case, the hot pressing and cutting module 20 moves, and the jig module 10 also moves, and the two move in cooperation with each other, thereby realizing the heat sealing and cutting operations of the hot pressing and cutting module 20 and the electrode assembly 200 on the jig module 10.

In this scheme, the electrode assembly 200 to be heat-sealed and cut is carried and positioned by the jig module 10, and the positioning assembly 12 is matched with the electrode assembly 200, so that the electrode assembly 200 is fixed on the positioning surface 111, the position of the electrode assembly 200 on the positioning surface 111 is kept motionless, and the heat-sealing and cutting precision of the heat-pressing cutting module 20 to the isolating film 201 on one side of the electrode assembly 200 is improved. Then, the hot pressing and cutting module 20 is matched with the jig module 10, the multi-layer isolating film 201 to be heat-sealed on one side of the electrode assembly 200 is heat-sealed and combined together, and redundant isolating films 201 on the electrode assembly 200 are synchronously cut, namely, the two steps of heat sealing and cutting of the isolating film 201 on the electrode assembly 200 can be realized at one time through the hot pressing and cutting module 20.

According to some embodiments of the present application, the positioning assembly 12 is used to abut at least opposite sides of the electrode assembly 200 to position the electrode assembly 200.

The positioning assembly 12 can be abutted against at least two opposite sides of the electrode assembly 200, limiting on two sides of the electrode assembly 200 can be achieved, the positioning assembly 12 contacts two opposite sides of the electrode assembly 200, interference phenomenon with the hot pressing cutting module 20 is not easy to occur, and the hot pressing cutting module 20 is beneficial to heat sealing and cutting the electrode assembly 200.

According to some embodiments of the present application, the positioning assembly 12 includes a plurality of abutments 120, the plurality of abutments 120 cooperating together for abutting the remaining three sides of the electrode assembly 200, except for the side to be heat sealed and cut.

The supporting member 120 provides a supporting function to the side surface of the electrode assembly 200, and the supporting member 120 may have various structures, for example, when the supporting member 120 is a telescopic mechanism, such as a cylinder or an electric push rod, the supporting member 120 can support or release the side surface of the electrode assembly 200 by using the telescopic function of the supporting member 120 itself. Of course, the supporting member 120 may be a conventional block, and the block itself does not have a telescopic function, but the block may be movably disposed on the jig module 10, and the supporting function of the electrode assembly 200 may be achieved.

The plurality of propping pieces 120 can be distributed on the jig module 10 and positioned at the periphery side of the electrode assembly 200, and the plurality of propping pieces 120 are matched together to play a role in positioning the electrode assembly 200. The number of the holders 120 on each side of the electrode assembly 200 may be one or more, and the number of the holders 120 may be specific according to practical situations.

In this embodiment, the electrode assembly 200 is provided with one holder 120 on each of the three sides except for one side to be heat sealed and cut.

The plurality of propping pieces 120 prop against the other three sides of one side of the electrode assembly 200 except for the side to be heat sealed and cut, so that the other three sides of the electrode assembly 200 except for the side to be heat sealed and cut all have the propping pieces 120 to realize the propping and limiting functions, the positioning effect of the electrode assembly 200 is better, and the movement of the electrode assembly 200 is not easy to occur.

According to some embodiments of the present application, referring to fig. 1, 2 and 3, the jig module 10 further includes a carrying table 11, and at least one of the plurality of supporting members 120 is movably disposed on the carrying table 11 for adjusting the area size of the area enclosed by the plurality of supporting members 120.

There are various ways in which the abutment 120 can move on the stage 11. For example, a connection hole 1231 may be disposed on the carrying platform 11 at a position corresponding to the supporting member 120, an adjusting hole 1211 is disposed on the supporting member 120, the adjusting hole 1211 is a long-strip-shaped hole, and the supporting member 120 may move along the length direction of the adjusting hole 1211 to adjust the position of the supporting member 120 on the carrying platform 11. After the position of the supporting member 120 is determined, the supporting member is fastened and fixed with the connecting hole 1231 after penetrating the adjusting hole 1211 through the locking member, so that the position of the supporting member 120 can be fixed after being adjusted, and the locking member can be a locking screw.

Of course, the supporting member 120 may be provided with a telescopic screw, the screw is in threaded engagement with the supporting member 120, and the screw is rotated to thereby realize the telescopic screw, and the distal end of the screw may be provided with a flexible contact portion in contact with the electrode assembly 200, through which the screw is in contact with the electrode assembly 200.

Through setting up the support piece 120 movably on the plummer 11, then the regional area size that a plurality of support pieces 120 enclose can be adjusted, just so can adapt to the location demand of the electrode assembly 200 of different models, the application scope of tool module 10 is wider.

According to some embodiments of the present application, referring to fig. 3, the holding member 120 includes a first holding member 121, the first holding member 121 is configured to hold a first side of the electrode assembly 200 having a tab and a second side of the electrode assembly 200 opposite to the tab, and the first holding member 121 is movably disposed on the carrying table 11 along a first direction X and a second direction Y, wherein the first direction X is a length direction of the electrode assembly 200, and the second direction Y is a width direction of the electrode assembly 200.

The number of the first supporting members 121 is two, and the two first supporting members 121 are respectively positioned on a first side of the electrode assembly 200 with the tab and a second side of the electrode assembly 200 opposite to the tab. In order to realize the position adjustment of the first abutting part 121 in the second direction Y, the bearing table 11 may be provided with a first sliding rail 123, where the first sliding rail 123 extends along the second direction Y, and the first abutting part 121 is slidingly engaged on the first sliding rail 123. The first sliding rail 123 is provided with a plurality of connecting holes 1231 along the second direction Y at intervals, the adjusting holes 1211 on the first supporting member 121 are extended along the first direction X, and the first supporting member 121 is selectively connected and fixed with one of the connecting holes 1231 after passing through the adjusting holes 1211 through the locking member, so that the position adjustment of the first supporting member 121 in both the first direction X and the second direction Y is realized. The number of the adjustment holes 1211 in the first holding member 121 may be one or more. In the case where the number of the adjustment holes 1211 is plural, the plural adjustment holes 1211 are spaced apart in the second direction Y.

Of course, the supporting member 120 further includes a second supporting member 122, and the second supporting member 122 is used for limiting the opposite side of the electrode assembly 200 to be heat-pressed and cut. The second supporting member 122 may also be provided with a long strip hole, and the locking screw is used to pass through the long strip hole, so as to realize the position adjustment of the second supporting member 122.

Since one side of the electrode assembly 200 has protruding tabs, the first supporting member 121 can be movably disposed on the carrying table 11 in the first direction X and the second direction Y, that is, the first supporting member 121 can be position-adjustable in the two directions, so that the first supporting member 121 can be position-adjustable in the second direction Y, the first supporting member 121 can be staggered with the tabs of the electrode assembly 200, the risk that the first supporting member 121 interferes with the tabs on the electrode assembly 200 is reduced, and then the position of the first supporting member 121 in the first direction X is adjusted, so that the first supporting member 121 can be in contact with the corresponding side of the electrode assembly 200, and the positioning function of the electrode assembly 200 is realized.

According to some embodiments of the present application, referring to fig. 4, the jig module 10 further includes a cover plate 13, the cover plate 13 is disposed on the carrying platform 11 in a reversible manner, and the cover plate 13 is disposed on a side of the electrode assembly 200 facing away from the positioning surface 111.

The cover 13 is disposed on the carrying platform 11 in a reversible manner, which means that the cover 13 can be rotatably mounted on the carrying platform 11 through a hinge, and the extending direction of the hinge can be a horizontal direction. The cover plate 13 has an open state and a closed state relative to the carrying table 11, when the electrode assembly 200 to be hot pressed and cut on the positioning surface 111 needs to be hot pressed and cut, the cover plate 13 is turned downwards, the cover plate 13 is switched from the open state to the closed state, and the cover plate 13 covers the top side of the electrode assembly 200, so that the limit of the electrode assembly 200 is realized. After the heat sealing and cutting of the separator 201 on the electrode assembly 200 are completed, the cap plate 13 is turned upward, the cap plate 13 is switched to the open state, and the electrode assembly 200 can be taken out.

Support columns for supporting the cover plate 13 are correspondingly arranged on the bearing table 11, and when the cover plate 13 is in a closed state, the cover plate 13 contacts with the support columns or the height of the electrode assembly 200 is higher than that of the support columns, a certain gap is formed between the support columns and the cover plate 13. The cover plate 13 is in magnetic attraction fit with the support column, and the magnetic force can press the cover plate 13 on the electrode assembly 200, so that the cover effect on the electrode assembly 200 is achieved.

In order to further improve the positioning effect of the electrode assembly 200, the cover plate 13 may be arranged on the side of the electrode assembly 200 facing away from the positioning surface 111, so as to achieve clamping and positioning of the electrode assembly 200 in the thickness direction, and the positioning effect of the electrode assembly 200 is better.

According to some embodiments of the present application, referring to fig. 4, the thermo-compression cutting module 20 includes a stand 21, a thermo-compression head 22, and a first driving member 23, wherein the first driving member 23 is disposed on the stand 21, and the first driving member 23 is configured to drive the thermo-compression head 22 to move along a third direction Z, so that the thermo-compression head 22 approaches or moves away from the positioning component 12, and the third direction Z is perpendicular to the positioning surface 111.

The stand 21 is a frame structure for providing the heat and pressure cutting module 20 with a bearing function, and the stand 21 may be mounted on the bearing table 11 or may not be mounted on the bearing table 11. In the present embodiment, the stand 21 is mounted on the carrying table 11 and is located above the positioning surface 111.

The stand 21 is a door-shaped frame body structure, and comprises a plurality of stand columns 211 and a mounting plate 212, wherein the stand columns 211 extend along the vertical direction, the lower ends of the stand columns 211 are connected with the bearing table 11, and the mounting plate 212 is fixedly connected with the upper ends of the stand columns 211.

The first driving member 23 is a driving member capable of driving the thermal pressing head 22 to move, and the first driving member 23 may be a variety of driving mechanisms, for example, the first driving member 23 may be a cylinder, a hydraulic cylinder, an electric push rod, a screw nut pair, a linear module, or the like. Alternatively, the first driving member 23 is a cylinder.

The third direction Z is perpendicular to the direction of the positioning surface 111, and in the case where the positioning surface 111 is a horizontal plane, the third direction Z may be understood as a vertical direction.

The thermal pressing head 22 is a thermal pressing member capable of providing a thermal pressing function, and the thermal pressing head 22 is a conventional art for heat-sealing the separator 201 of the electrode assembly 200 by heating. The heat press head 22 can feed back the temperature of the hot press end face through the thermocouple, the proper current is applied to the heat press head 22 to obtain the proper temperature, and the heat is conducted to the workpiece to be combined, such as the isolating film 201, through the bottom of the heat press head 22, so that the welding parts are finally heat-sealed or welded together.

The thermal head 22 can move along the third direction Z under the action of the first driving member 23, that is, the thermal head 22 can be close to or far away from the electrode assembly 200 on the positioning surface 111 through the first driving member 23, so that the electrode assembly 200 does not need to adjust the position after the positioning is completed, and the thermal sealing of the isolation film 201 on one side of the electrode assembly 200 can be realized only by driving the thermal head 22 to move through the first driving member 23.

According to some embodiments of the present application, referring to fig. 1 to 4, the thermo-compression cutting module 20 further includes a first lifting frame 24 and a first guiding portion 25, the first lifting frame 24 is connected to the first driving member 23, the first lifting frame 24 is used for mounting the heating ram 22, the first guiding portion 25 is disposed between the first lifting frame 24 and the stand 21, and the first guiding portion 25 is used for guiding the first lifting frame 24 to move along the third direction Z relative to the stand 21.

The first lifting frame 24 is of a frame body structure, an air cylinder connector can be correspondingly arranged on the first lifting frame 24, and the driving end of the first driving piece 23 is connected to the air cylinder connector, so that the first lifting frame 24 can be driven to lift up and down along the third direction Z relative to the vertical frame 21, and the function that the thermal pressure head 22 is close to or far away from the jig module 10 is achieved.

The first guide portion 25 is a guide member for guiding the first lift frame 24 during movement in the third direction Z, and for example, the first guide portion 25 may include first guide bars, and the number of the first guide bars may be one or two. In this embodiment, the number of the first guide bars is two, and the two first guide bars are respectively located at two opposite sides of the first driving member 23. The first guiding portion 25 is disposed on the stand 21, the first lifting frame 24 is correspondingly provided with a guiding device through which the first guiding rod passes, the guiding device can be a guiding sleeve or a guiding hole, the first guiding rod passes through the guiding device of the first lifting frame 24, the guiding device plays a guiding and limiting role on the first guiding rod, and the first lifting frame 24 is guided to move only in the third direction Z.

The setting of first guiding part 25, under the effect of first driving piece 23, first guiding part 25 can play the function of direction to first crane 24 for first crane 24 can be accurate steady along third direction Z goes up and down, realizes the function of accurate heat-seal to the barrier film 201 of electrode assembly 200 one side.

According to some embodiments of the present application, the thermo-compression cutting module 20 further includes a cutter 26 and a second driving member 27, wherein the second driving member 27 is disposed on the stand 21, and the second driving member 27 is configured to drive the cutter 26 to move along the third direction Z so as to move the cutter 26 closer to or farther from the positioning assembly 12.

The second driving member 27 is a driving member capable of driving the cutter 26 to move, and the second driving member 27 may be a variety of driving mechanisms, for example, the second driving member 27 may be a cylinder, a hydraulic cylinder, an electric push rod, a screw nut pair, a linear module, or the like.

Alternatively, the second driving member 27 is identical in structure to the first driving member 23, and the second driving member 27 is also a cylinder.

The cutter 26 is a cutter capable of providing a cutting function for the separator 201, and the cutter 26 can be obtained by direct purchase, and the cutter 26 will not be described in detail here.

The cutter 26 can move along the third direction Z under the action of the second driving member 27, that is, the cutter 26 can approach or separate from the electrode assembly 200 on the positioning surface 111 through the second driving member 27, so that the electrode assembly 200 does not need to adjust the position after positioning is completed, and the cutting action of the isolating film 201 on one side of the electrode assembly 200 can be realized only by driving the cutter 26 to move through the second driving member 27.

According to some embodiments of the application, the hot press cutting module 20 further comprises a second lifting frame 28 and a second guiding portion 29, the second lifting frame 28 is connected with the second driving member 27, the second lifting frame 28 is used for mounting the cutter 26, the second guiding portion 29 is arranged between the second lifting frame 28 and the stand 21, and the second guiding portion 29 is used for guiding the second lifting frame 28 to move along the third direction Z relative to the stand 21.

The second lifting frame 28 is of a frame body structure, an air cylinder connector is correspondingly arranged on the second lifting frame 28, and the second driving piece 27 is connected to the air cylinder connector, so that the second lifting frame 28 can be driven to lift up and down along the third direction Z, and the cutter 26 is close to or far away from the jig module 10.

The second guiding portion 29 is a guiding component that guides the second lifting frame 28 in the moving process along the third direction Z, for example, the second guiding portion 29 may include two second guiding rods, and the two second guiding rods are respectively located on two sides of the second driving member 27. The second guiding portion 29 is disposed on the stand 21, the second lifting frame 28 is correspondingly provided with a guiding device through which the second guiding rod passes, the guiding device can be a guiding sleeve or a guiding hole, the second guiding rod passes through the guiding device of the second lifting frame 28, the guiding device plays a guiding and limiting role on the second guiding rod, and the second lifting frame 28 is guided to move only in the third direction Z.

The second guiding part 29 is arranged, and under the action of the second driving piece 27, the second guiding part 29 can play a role in guiding the second lifting frame 28, so that the second lifting frame 28 can accurately and stably lift along the third direction Z, and the function of accurately cutting the isolating film 201 on one side of the electrode assembly 200 is ensured.

According to some embodiments of the present application, referring to fig. 6, the thermo-compression head 22 has a relief hole 221 through which the cutter 26 passes, and the cutter 26 is used to cut the redundant separator 201 on one side of the electrode assembly 200 after passing through the relief hole 221.

The avoidance hole 221 is a hole formed in the thickness direction of the hot pressing head 22, the avoidance hole 221 extends along the width direction of the electrode assembly 200, and the length of the avoidance hole 221 is greater than that of the isolation film 201, so that the cutter 26 can cut the isolation film 201 after passing through the avoidance hole 221. The relief hole 221 has a width greater than the width of the cutter 26.

The jig module 10 is provided with a product (electrode assembly) to be heat-sealed and cut, a first driving piece 23 obtains a signal to move downwards, a second driving piece 27 moves downwards, a cutter 26 is cut, the second driving piece 27 drives the cutter 26 to reset upwards, the heat-sealing action is finished, the first driving piece 23 obtains a signal to move upwards, the heat-sealing and cutting actions are finished, and the material taking cycle enters the next period.

Because the heat-sealing is longer than cutting time, through being provided with the dodging hole 221 that supplies cutter 26 to wear to establish on hot pressing head 22, so in the in-process of hot pressing head 22 to barrier film 201 heat-sealing, cutter 26 is under the effect of second driving piece 27, cutter 26 can pass dodging hole 221 on hot pressing head 22, cuts unnecessary barrier film 201 of electrode assembly 200 one side, and the heat-sealing and the cutting of barrier film 201 on electrode assembly 200 can go on in step, do not need the position of adjusting electrode assembly 200 and repositioning, has improved the efficiency of heat-sealing and cutting to barrier film 201 of electrode assembly 200 one side greatly, has shortened process time.

Referring to fig. 4 and 5, according to some embodiments of the present application, the thermo-compression cutting module 20 further includes a position adjusting assembly 30, the position adjusting assembly 30 is disposed between the second lifting frame 28 and the cutter 26, the position adjusting assembly 30 is used for adjusting the position of the cutter 26 in a second direction Y, the second direction Y is a width direction of the electrode assembly 200, and the second direction Y is perpendicular to the third direction Z.

The position adjustment assembly 30 may be of various configurations, for example, the position adjustment assembly 30 may be a cylinder, a hydraulic cylinder, a linear die set or a lead screw nut pair mechanism or an adjusting screw 32 mechanism, etc. The specific structure of the position adjustment assembly 30 may be practical.

Through being provided with position control subassembly 30 at second crane 28 and cutter 26, position control subassembly 30 can adjust the position of cutter 26 in second direction Y, can finely tune the position of cutter 26 according to the actual needs of cutting of barrier film 201, and application scope is wider.

According to some embodiments of the present application, referring to fig. 5, the position adjusting assembly 30 includes a mounting base 31, an adjusting screw 32, a tool rest 33 and a third guiding portion 34, wherein the mounting base 31 is disposed on the second lifting frame 28, the adjusting screw 32 extends along a second direction Y, the adjusting screw 32 is rotatably mounted on the mounting base 31, the tool rest 33 is used for mounting the cutting tool 26, the tool rest 33 is in threaded engagement with the adjusting screw 32, the third guiding portion 34 extends along the second direction Y and is disposed on the second lifting frame 28, and the tool rest 33 is in sliding engagement with the third guiding portion 34.

The adjusting screw 32 is a screw structure with an external thread structure on a rod, the cutter frame 33 is a frame body for installing the cutter 26, the cutter 26 is detachably connected with the cutter frame 33, the installation mode of the cutter 26 can be various, for example, the cutter 26 can be directly fastened and installed on the cutter frame 33 through a screw, and the cutter 26 can also be clamped and fixed on the cutter frame 33 through a clamping plate clamping mode.

The third guide portion 34 is a guide member for providing a guide function to the tool rest 33, and the third guide portion 34 may be a guide member such as a guide rod or a slide rail.

The adjusting screw 32 is rotatably arranged on the second lifting frame 28 through the mounting seat 31, the cutter frame 33 can be used for mounting the cutter 26, the cutter frame 33 is in threaded fit with the adjusting screw 32, the cutter frame 33 can be prevented from rotating along with the adjusting screw 32 under the guiding effect of the third guiding part 34 on the cutter frame 33 by rotating the adjusting screw 32, so that the cutter frame 33 is driven to carry out position adjustment along the third guiding part 34 in the second direction Y, the rotation amount of the adjusting screw 32 is controlled, the position adjustment amount of the cutter frame 33 in the second direction Y can be accurately controlled, the adjustment is convenient and quick, the operation is simple, and the adjustment precision is high.

Referring to fig. 7 and 8, according to some embodiments of the present application, the thermo-compression cutting apparatus 100 further includes a frame 40, the frame 40 is used for carrying the jig module 10 and the thermo-compression cutting module 20, and a moving wheel 50 is disposed at the bottom of the frame 40.

The frame 40 refers to a frame mechanism that provides a bearing function for the jig module 10 and the thermo-compression cutting module 20. The moving wheel 50 is a travelling wheel capable of providing a moving function to the frame 40, and may be a universal wheel, and the universal wheel may have a braking and locking function.

The frame 40 can be used for installing the jig module 10 and the hot pressing cutting module 20, provides bearing function for the jig module 10 and the hot pressing cutting module 20, and through being provided with the movable wheel 50 at the bottom of the frame 40, the hot pressing cutting device can carry out position transfer according to the demand, and the flexibility is strong.

The embodiment of the application also provides a battery manufacturing device, which comprises the hot pressing and cutting device 100 of any embodiment.

In some embodiments, referring to fig. 1 to 8, the thermocompression bonding apparatus 100 is used for heat-sealing and bonding a separator 201 on one side of an electrode assembly 200, the thermocompression bonding apparatus 100 includes a jig module 10 and a thermocompression bonding module 20, the jig module 10 has a positioning surface 111, the positioning surface 111 is used for carrying the electrode assembly 200, the jig module 10 includes a positioning component 12, the positioning component 12 is used for positioning the electrode assembly 200 on the positioning surface 111, the thermocompression bonding module 20 cooperates with the jig module 10 for heat-sealing the separator 201 on one side of the electrode assembly 200, and bonding the redundant separator 201 on the electrode assembly 200. The positioning assembly 12 includes a plurality of supporters 120, and the supporters 120 cooperate together to support the three sides of the electrode assembly 200 except for one side to be heat sealed and cut.

The electrode assembly 200 to be heat-sealed and cut is carried and positioned by the jig module 10, and the positioning assembly 12 is matched with the electrode assembly 200, so that the electrode assembly 200 is fixed on the positioning surface 111, the position of the electrode assembly 200 on the positioning surface 111 is kept motionless, and the heat-sealing and cutting precision of the isolating film 201 on one side of the electrode assembly 200 by the hot-pressing cutting module 20 is improved. Then, the hot pressing and cutting module 20 is matched with the jig module 10, the multi-layer isolating film 201 to be heat-sealed on one side of the electrode assembly 200 is heat-sealed and combined together, and redundant isolating films 201 on the electrode assembly 200 are synchronously cut, namely, the two steps of heat sealing and cutting of the isolating film 201 on the electrode assembly 200 can be realized at one time through the hot pressing and cutting module 20. The plurality of propping pieces 120 prop against the other three sides of one side of the electrode assembly 200 except for the side to be heat sealed and cut, so that the other three sides of the electrode assembly 200 except for the side to be heat sealed and cut all have the propping pieces 120 to realize the propping and limiting functions, the positioning effect of the electrode assembly 200 is better, and the movement of the electrode assembly 200 is not easy to occur.

In some embodiments, the jig module 10 further includes a carrying table 11, and at least one of the plurality of propping elements 120 is movably disposed on the carrying table 11 for adjusting the area size of the area surrounded by the plurality of propping elements 120. The propping member 120 comprises a first propping member 121, wherein the first propping member 121 is used for propping against a first side of the electrode assembly 200 with a tab and a second side of the electrode assembly 200 opposite to the tab, the first propping member 121 is movably arranged on the bearing table 11 along a first direction X and a second direction Y, the first direction X is the length direction of the electrode assembly 200, and the second direction Y is the width direction of the electrode assembly 200. The jig module 10 further includes a cover plate 13, where the cover plate 13 is disposed on the carrying platform 11 in a reversible manner, and the cover plate 13 is used for covering a side of the electrode assembly 200 facing away from the positioning surface 111.

Through setting up the support piece 120 movably on the plummer 11, then the regional area size that a plurality of support pieces 120 enclose can be adjusted, just so can adapt to the location demand of the electrode assembly 200 of different models, the application scope of tool module 10 is wider. The first supporting piece 121 can be movably arranged on the bearing table 11 in the first direction X and the second direction Y, namely, the first supporting piece 121 can be adjusted in position in two directions, so that the first supporting piece 121 can be adjusted in position in the second direction Y, the first supporting piece 121 can be staggered with the lugs of the electrode assembly 200, the risk of interference between the first supporting piece 121 and the lugs is reduced, and then the position of the first supporting piece 121 in the first direction X is adjusted, so that the first supporting piece 121 can be contacted with the corresponding side of the electrode assembly 200, and the limiting function of the electrode assembly 200 is realized. Through the setting of apron 13, apron 13 can cover to locate the side that electrode assembly 200 deviates from locating surface 111 to realize the tight location of clamp in the thickness direction to electrode assembly 200, the location effect of electrode assembly 200 is better.

In some embodiments, the hot press cutting module 20 includes a stand 21, a hot press head 22, and a first driving member 23, where the first driving member 23 is disposed on the stand 21, and the first driving member 23 is used to drive the hot press head 22 to move along a third direction Z, so that the hot press head 22 approaches or moves away from the positioning assembly 12, and the third direction Z is perpendicular to the positioning surface 111. The hot press cutting module 20 further comprises a first lifting frame 24 and a first guiding part 25, the first lifting frame 24 is connected with the first driving piece 23, the first lifting frame 24 is used for mounting the heating pressure head 22, the first guiding part 25 is arranged between the first lifting frame 24 and the vertical frame 21, and the first guiding part 25 is used for guiding the first lifting frame 24 to move along the third direction Z relative to the vertical frame 21. The hot press cutting module 20 further comprises a cutter 26 and a second driving member 27, wherein the second driving member 27 is disposed on the stand 21, and the second driving member 27 is used for driving the cutter 26 to move along the third direction Z so as to enable the cutter 26 to be close to or far from the positioning assembly 12. The hot press cutting module 20 further comprises a second lifting frame 28 and a second guiding portion 29, the second lifting frame 28 is connected with the second driving piece 27, the second lifting frame 28 is used for mounting the cutter 26, the second guiding portion 29 is arranged between the second lifting frame 28 and the stand 21, and the second guiding portion 29 is used for guiding the second lifting frame 28 to move along the third direction Z relative to the stand 21.

The thermal head 22 can move along the third direction Z under the action of the first driving member 23, that is, the thermal head 22 can be close to or far away from the electrode assembly 200 on the positioning surface 111 through the first driving member 23, so that the electrode assembly 200 does not need to adjust the position after the positioning is completed, and the thermal sealing of the isolation film 201 on one side of the electrode assembly 200 can be realized only by driving the thermal head 22 to move through the first driving member 23. Under the effect of the first driving piece 23, the first guiding part 25 can play a role in guiding the first lifting frame 24, so that the first lifting frame 24 can accurately and stably lift along the third direction Z, and the function of accurately heat-sealing the isolating film 201 on one side of the electrode assembly 200 is realized. The cutter 26 can move along the third direction Z under the action of the second driving member 27, that is, the cutter 26 can approach or separate from the electrode assembly 200 on the positioning surface 111 through the second driving member 27, so that the electrode assembly 200 does not need to adjust the position after positioning is completed, and the cutting action of the isolating film 201 on one side of the electrode assembly 200 can be realized only by driving the cutter 26 to move through the second driving member 27. Under the action of the second driving member 27, the second guiding portion 29 can play a role in guiding the second lifting frame 28, so that the second lifting frame 28 can accurately and stably lift along the third direction Z, and the function of accurately cutting the separator 201 on one side of the electrode assembly 200 is ensured.

In some embodiments, the thermo-compression head 22 has a relief hole 221 through which the cutter 26 passes, and the cutter 26 is used to cut the redundant separator 201 on one side of the electrode assembly 200 after passing through the relief hole 221. The hot press cutting module 20 further includes a position adjusting assembly 30, the position adjusting assembly 30 is disposed between the second lifting frame 28 and the cutter 26, the position adjusting assembly 30 is used for adjusting the position of the cutter 26 in a second direction Y, the second direction Y is a width direction of the electrode assembly 200, and the second direction Y is perpendicular to the third direction Z. The position adjusting assembly 30 comprises a mounting seat 31, an adjusting screw 32, a tool rest 33 and a third guide part 34, wherein the mounting seat 31 is arranged on the second lifting frame 28, the adjusting screw 32 extends along a second direction Y, the adjusting screw 32 is rotatably mounted on the mounting seat 31, the tool rest 33 is used for mounting the cutter 26, the tool rest 33 is in threaded fit with the adjusting screw 32, the third guide part 34 extends along the second direction Y and is arranged on the second lifting frame 28, and the tool rest 33 is in sliding fit with the third guide part 34.

Through being provided with the hole 221 that dodges that supplies cutter 26 to wear to establish on hot pressing head 22, in the in-process of hot pressing head 22 to barrier film 201 heat-seal like this, cutter 26 under the effect of second driving piece 27, cutter 26 can pass the hole 221 that dodges on the hot pressing head 22, cuts unnecessary barrier film 201, and the heat-seal and the cutting of barrier film 201 can go on in step on electrode assembly 200 promptly, need not adjust electrode assembly 200's position and repositioning, has improved barrier film 201 heat-seal and cut efficiency greatly, has shortened process time. Through being provided with position control subassembly 30 at second crane 28 and cutter 26, position control subassembly 30 can adjust the position of cutter 26 in second direction Y, can finely tune the position of cutter 26 according to the actual needs of cutting of barrier film 201, and application scope is wider. The adjusting screw 32 is rotatably arranged on the second lifting frame 28 through the mounting seat 31, the cutter frame 33 can be used for mounting the cutter 26, the cutter frame 33 is in threaded fit with the adjusting screw 32, the cutter frame 33 can be prevented from rotating along with the adjusting screw 32 under the guiding effect of the third guiding part 34 on the cutter frame 33 by rotating the adjusting screw 32, so that the cutter frame 33 is driven to carry out position adjustment along the third guiding part 34 in the second direction Y, the rotation amount of the adjusting screw 32 is controlled, the position adjustment amount of the cutter frame 33 in the second direction Y can be accurately controlled, the adjustment is convenient and quick, the operation is simple, and the adjustment precision is high.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (15)

1. A heat press cutting device for heat-sealing and cutting a separator film on one side of an electrode assembly, comprising:

The jig module is provided with a positioning surface, the positioning surface is used for bearing the electrode assembly, the jig module comprises a positioning assembly, and the positioning assembly is used for positioning the electrode assembly on the positioning surface;

And the hot pressing cutting module is matched with the jig module and is used for heat-sealing the isolating film on one side of the electrode assembly and cutting the redundant isolating film on the electrode assembly.

2. The hot press cutting apparatus of claim 1, wherein the positioning assembly is configured to abut against at least opposite sides of the electrode assembly to position the electrode assembly.

3. The thermo-compression cutting apparatus according to claim 2, wherein the positioning member comprises a plurality of holding members which cooperate together for holding the three remaining sides of the electrode assembly except for the side to be heat-sealed and cut.

4. The hot press cutting apparatus according to claim 3, wherein the jig module further comprises:

the bearing table is movably arranged on at least one of the supporting pieces, so as to be used for adjusting the area size of the area surrounded by the supporting pieces.

5. The hot press cutting device according to claim 4, wherein the holding member includes a first holding member for holding a first side of the electrode assembly having a tab and a second side of the electrode assembly disposed opposite the tab;

The first supporting piece is movably arranged on the bearing table along a first direction and a second direction, the first direction is the length direction of the electrode assembly, and the second direction is the width direction of the electrode assembly.

6. The hot press cutting apparatus of claim 4, wherein the jig module further comprises:

And the cover plate is arranged on one side of the electrode assembly, which is away from the positioning surface, and is used for covering the bearing table.

7. The thermo-compression cutting apparatus according to claim 1, wherein the thermo-compression cutting module comprises:

A vertical frame;

A hot press head;

The first driving piece is arranged on the vertical frame and used for driving the hot pressing head to move along a third direction, so that the hot pressing head is close to or far away from the positioning assembly, and the third direction is perpendicular to the positioning surface.

8. The thermo-compression cutting apparatus according to claim 7, wherein the thermo-compression cutting module further comprises:

The first lifting frame is connected with the first driving piece and is used for installing the hot pressing head;

The first guide part is arranged between the first lifting frame and the vertical frame and used for guiding the first lifting frame to move along the third direction relative to the vertical frame.

9. The thermo-compression cutting apparatus according to claim 7, wherein the thermo-compression cutting module further comprises:

A cutter;

The second driving piece is arranged on the vertical frame and used for driving the cutter to move along the third direction so as to enable the cutter to be close to or far away from the positioning assembly.

10. The thermo-compression cutting apparatus according to claim 9, wherein the thermo-compression cutting module further comprises:

The second lifting frame is connected with the second driving piece and is used for installing the cutter;

the second guide part is arranged between the second lifting frame and the vertical frame and is used for guiding the second lifting frame to move along the third direction relative to the vertical frame.

11. The hot press cutting device according to claim 10, wherein the hot press head is provided with a relief hole through which the cutter passes, and the cutter is used for cutting the redundant isolating film on one side of the electrode assembly after passing through the relief hole.

12. The thermo-compression cutting apparatus according to claim 11, wherein the thermo-compression cutting module further comprises:

The position adjusting assembly is arranged between the second lifting frame and the cutter and is used for adjusting the position of the cutter in a second direction, the second direction is the width direction of the electrode assembly, and the second direction is perpendicular to the third direction.

13. The hot press cutting apparatus according to claim 12, wherein the position adjustment assembly comprises:

the mounting seat is arranged on the second lifting frame;

The adjusting screw rod is arranged in an extending mode along the second direction and is rotatably installed on the installation seat;

the knife rest is used for installing the cutter and is in threaded fit with the adjusting screw;

And the third guide part is arranged on the second lifting frame in an extending way along the second direction, and the tool rest is in sliding fit with the third guide part.

14. The hot press cutting apparatus according to claim 1, the hot pressing and cutting device is characterized by further comprising:

The hot pressing cutting machine comprises a rack, wherein the rack is used for bearing the jig module and the hot pressing cutting module, and a movable wheel is arranged at the bottom of the rack.

15. A battery manufacturing apparatus characterized by comprising the thermo-compression cutting device according to any one of claims 1 to 14.