CN216335185U

CN216335185U - Battery module grabbing device and battery manufacturing equipment

Info

Publication number: CN216335185U
Application number: CN202122609429.9U
Authority: CN
Inventors: 谌亚飞; 孙志强; 罗勇华; 黄华; 孙燕林
Original assignee: Jiangsu Contemporary Amperex Technology Ltd
Current assignee: Jiangsu Contemporary Amperex Technology Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-19
Anticipated expiration: 2031-10-28

Abstract

The application relates to the technical field of battery manufacturing, especially, relate to a battery module grabbing device and battery manufacturing equipment. The battery module grabbing device comprises a clamping assembly, the clamping assembly comprises at least one pair of cylinders and at least one pair of clamping jaws, the pair of cylinders stretch along a first direction, the pair of clamping jaws are driven to mutually approach or mutually depart along a second direction to clamp or release the battery module, and the second direction is not parallel to the first direction. The battery module grabbing device and the battery manufacturing equipment that this application embodiment provided can improve the reliability of grabbing the battery module, reduce the probability that the battery module dropped.

Description

Battery module grabbing device and battery manufacturing equipment

Technical Field

The application relates to the technical field of battery manufacturing, especially, relate to a battery module grabbing device and battery manufacturing equipment.

Background

With the progress of society and the continuous development of science and technology, lithium ion batteries are strongly sought by industries such as 3C digital and power tools due to the advantages of high energy density, high voltage, environmental protection, long service life, quick charging and the like, and particularly have outstanding contribution to the new energy automobile industry.

Because of the limitations of the capacity and the manufacturing process of the lithium battery, it is impossible to obtain a battery cell with an ultra-large capacity, and therefore, in order to provide a larger power to the electric device, the battery cell needs to be assembled into a battery module, and one or more battery modules need to be assembled into a whole to form the battery.

In the box need be packed into with battery module into at the assembly process usually, the box opening up adopts grabbing device to snatch battery module, puts into from the opening after transporting battery module to the opening top of box again. However, the grabbing device in the prior art often causes the battery module to fall off in the process of grabbing the battery module, which not only causes damage to the battery module, but also may threaten objects or pedestrians below the battery module.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the embodiment of the present application provides a battery module grabbing device and a battery manufacturing apparatus, which can improve the reliability of grabbing a battery module and reduce the probability of dropping the battery module.

According to an aspect of the embodiments of the present application, a battery module gripping device is provided, which includes a gripping assembly, the gripping assembly includes at least one pair of cylinders and at least one pair of clamping jaws, the pair of cylinders stretches and retracts along a first direction to drive the pair of clamping jaws to approach or move away from each other along a second direction to grip or release a battery module, and the second direction is not parallel to the first direction.

Through adopting the scheme, when a pair of clamping jaw presss from both sides tight battery module, the clamping jaw receives the reaction force of battery module along the second direction, and second direction and first direction nonparallel, therefore, the direction of the action force of clamping jaw to the cylinder is not parallel with the first direction, even the tolerance supply at the in-process cylinder of snatching battery module is not enough, the cylinder also is difficult to promote and stretch out and draw back by the clamping jaw, thereby when making not the initiative action of cylinder, the cylinder is difficult to receive the effect of clamping jaw and drives the clamping jaw and move along the second direction passively, the auto-lock of clamping jaw has been realized, the fastness that the subassembly snatched battery module has been got to the clamp has been improved, the probability that battery module dropped has been reduced.

In some embodiments, the clamping assembly includes a support member, the cylinder body of the air cylinder is fixed on the support member along a first direction, a sliding groove is arranged on the support member along a second direction, and the clamping jaw is matched with the sliding groove and moves along the sliding groove under the driving of the piston rod of the air cylinder.

Through adopting the scheme, the cylinder body of cylinder has further injectd the flexible direction of cylinder along the setting that first direction was fixed in on the support piece, and the setting of spout has further injectd the moving direction of clamping jaw to make the direction of motion of getting each part of subassembly more accurate, the auto-lock effect of clamping jaw is better.

In some embodiments, the side wall of the chute is provided with a first waist-shaped hole along a first direction, the clamping jaw is provided with a second waist-shaped hole along a third direction, and the third direction is not parallel to and perpendicular to the first direction and the second direction; the clamping assembly further comprises a roller connected with a piston rod of the cylinder, the roller penetrates through the first waist-shaped hole and the second waist-shaped hole, and the cylinder drives the roller to move in the first waist-shaped hole along the first direction so as to drive the clamping jaw to move along the second direction through the second waist-shaped hole.

Through adopting the scheme, under the drive of cylinder, the roller removes along first direction in first waist shape hole, the in-process that the roller removed, in second waist shape hole and first waist shape hole cross section, the lateral wall looks butt in the width direction in roller and second waist shape hole, and the position in the spout in second waist shape hole is different, the cross position in second waist shape hole and first waist shape hole is also different, consequently, when the roller removes in first waist shape hole along first direction, in order to change the cross position in second waist shape hole and first waist shape hole, the clamping jaw can remove in the spout along the second direction, thereby reach the effect of pressing from both sides tightly or releasing battery module.

In some embodiments, the second direction is perpendicular to the first direction.

Through adopting the scheme, after the clamping jaw receives the reaction force of battery module, when pushing away the cylinder along the second direction, the power that the cylinder received from the clamping jaw is perpendicular with the flexible direction of piston rod, therefore the cylinder takes place flexible degree of difficulty and increases, when further reducing the air supply volume not enough, the cylinder receives the top of clamping jaw and flexible probability, strengthens the auto-lock ability of getting the subassembly of pressing from both sides.

In some embodiments, the clamping assembly further comprises a cover plate covering the first kidney-shaped hole and used for preventing sundries from entering the first kidney-shaped hole.

Through adopting the scheme, debris enter into first waist shape downthehole, perhaps enter into second waist shape downthehole through first waist shape hole after, can obstruct the removal of roller in first waist shape hole or second waist shape downthehole to influence the clamping jaw and get to the clamp of battery module, and set up the apron then can avoid the emergence of this kind of problem afterwards.

In some embodiments, a guide groove is formed in one side of the cover plate, which is close to the first waist-shaped hole, and the guide groove is arranged along the first direction; the roller is connected with a guide block, and the guide block is matched with the guide groove and used for providing guide for the movement of the roller.

Through adopting the scheme, when the cylinder promoted the roller and removed along first waist shape hole, the guide block also removed along first direction in the guide way to carry out dual direction to the removal of roller, prevent that the roller from taking place the skew, can also prevent simultaneously that the roller from leading to the unable stable centre gripping battery module of clamping jaw to keeping away from the direction skew in second waist shape hole.

In some embodiments, the device further comprises a suction assembly; the suction assembly comprises a suction disc and a vacuum pipeline, the suction disc is used for sucking the battery module, and the vacuum pipeline is used for providing an air source for the suction disc.

Through adopting the scheme, press from both sides the subassembly and absorb the subassembly and carry out dual the grabbing to battery module and hold, further prevent that battery module from dropping in handling.

In some embodiments, the bottom of the suction cup is provided with a profiling part, and the profiling part is matched with the shape of the corresponding position of the battery module to increase the contact area between the suction cup and the battery module.

Through adopting the scheme, the profile modeling portion has increased the area of contact of sucking disc with the battery module, has improved the fastness of inhaling the connecing, further prevents that the battery module from dropping in handling.

In some embodiments, the bottom of the suction cup is provided with a non-metal layer for preventing the suction cup from damaging the battery module.

Through adopting the scheme, the nonmetal layer has kept off the metal part of sucking disc and the direct contact of battery module to prevent that the sucking disc from haring battery module in the contact process.

In some embodiments, the vacuum circuit includes a plurality of gas paths, each gas path controlling a respective partial area of the chuck.

Through adopting the scheme, when a gas circuit breaks down and became invalid, other gas circuits made the sucking disc still have the adsorption affinity to keep the adsorption efficiency to battery module, prevent that battery module from dropping in handling.

In some embodiments, the sucking assembly further comprises a connecting plate, and an elastic assembly and a sensor are arranged between the sucking disc and the connecting plate; the sensor is used for sensing the distance between the suction cup and the connecting plate in the process of putting down the battery module so as to determine whether the battery module is contacted with the bottom of the box body.

By adopting the scheme, when the battery module is not contacted with the bottom of the box body, the elastic component is stretched to be longer under the action of the gravity of the battery module, so that the distance between the connecting plate and the sucker is longer; when the battery module contacts the bottom of the box and continuously moves downwards, the box bears partial or all gravity of the battery module, so that the length of the elastic component is shorter, namely, the distance between the connecting plate and the sucking disc is shortened. When the sensor senses that the distance between the connecting plate and the sucker is shortened, the battery module is shown to be in contact with the bottom of the box body, and the suction assembly releases suction force accordingly, so that the suction connection relation between the sucker and the battery module is relieved, and the battery module completely falls into the box body.

In some embodiments, the device further comprises a lifting mechanism for driving the clamping assembly to lift relative to the suction assembly.

Through adopting the scheme, press from both sides the both sides of getting the battery module that the subassembly was generally pressed from both sides, absorb the top of the battery module that the subassembly was generally absorb, so when battery module highly be less than the height of box inner space, before battery module contacted the bottom half completely, press from both sides the subassembly and probably take place to interfere with the lateral wall of box. And elevating system then can control under this kind of circumstances to press from both sides and get the subassembly and rise earlier, only drives the battery module through absorbing the subassembly and descends to avoid pressing from both sides to get the lateral wall of subassembly and box and take place to interfere, ensure that the battery module can transfer smoothly and put in place.

In some embodiments, the device further comprises an image acquisition mechanism for acquiring the environmental condition to adjust the position of the battery module.

Through adopting the scheme, the position of the battery module relative to the box body is judged according to the acquired image, so that the position of the battery module is adjusted, and the battery module can smoothly fall on the preset position. In addition, whether barriers exist in the moving direction of the battery module can be judged according to the image acquired by the image acquisition mechanism, and therefore the conveying direction of the battery module can be adjusted in time.

According to another aspect of the embodiments of the present application, there is provided a battery manufacturing apparatus including the battery module grasping device according to any one of the embodiments of the above-described subject matter.

By adopting the scheme, the working efficiency of the battery manufacturing device is higher, and the working safety is higher.

This application embodiment moves along the second direction and presss from both sides tightly or release battery module through a pair of cylinder along the flexible drive of first direction a pair of clamping jaw, because second direction and first direction nonparallel, therefore, even the tolerance supply at the in-process cylinder of snatching battery module is not enough, the cylinder also is difficult to be promoted and stretches out and draws back by the clamping jaw, thereby make when the cylinder does not actively act, the cylinder is difficult to receive the effect of clamping jaw and passively drives the clamping jaw and move along the second direction, the auto-lock of clamping jaw has been realized, the fastness that the subassembly snatched battery module is got to the clamp has been improved, the probability that battery module dropped has been reduced.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and the embodiments of the present application can be implemented according to the content of the description in order to make the technical means of the embodiments of the present application more clearly understood, and the detailed description of the present application is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present application more clearly understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a battery module grabbing device according to an embodiment of the present application at a first viewing angle.

Fig. 2 is a schematic structural diagram of a battery module grabbing device in an embodiment of the present application under a second viewing angle.

Fig. 3 is a schematic structural diagram of a gripping assembly in an embodiment of the present application.

Fig. 4 is an exploded view of the grasping assembly in an embodiment of the present application.

Fig. 5 is a schematic view illustrating a state of the suction assembly sucking the battery module according to an embodiment of the application.

Fig. 6 is a schematic structural diagram of a suction assembly in an embodiment of the present application at a first viewing angle.

Fig. 7 is a schematic structural diagram of a suction assembly in a second viewing angle according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a battery module grabbing device in another embodiment of the present application.

Description of reference numerals: 1. a battery module; 10. a gripping assembly; 101. a cylinder; 102. a clamping jaw; 103. a support member; 104. a chute; 105. a first waist-shaped hole; 106. a second waist-shaped hole; 107. a roller; 108. a cover plate; 109. a guide groove; 110. a guide block; 20. a suction assembly; 201. a suction cup; 202. a profiling portion; 203. a pipe joint; 204. a connecting plate; 205. an elastic component; 206. an inductor; 30. a lifting mechanism; 40. an image acquisition mechanism; p, a first direction; q, a second direction; t, third direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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 terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the description of the drawings are intended to cover, but not to exclude, other elements. The word "a" or "an" does not exclude a plurality.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The terms of orientation appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the battery module grasping device and the battery manufacturing apparatus of the present application. For example, in the description of the present application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for the convenience of description and simplicity of description only, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present application.

Further, expressions of directions of indication such as the X direction, the Y direction, and the Z direction, which are used to explain the operation and configuration of each member of the battery module grasping device and the battery manufacturing apparatus of the present embodiment, are not absolute but relative, and although these indications are appropriate when each member of the battery pack is in the position shown in the drawings, when the position is changed, the directions should be interpreted differently to correspond to the change.

Furthermore, the terms "first," "second," and the like in the description and claims of the present application or in the above-described drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential order, and may explicitly or implicitly include one or more of the features.

In the description of the present application, unless otherwise specified, "plurality" means two or more (including two), and similarly, "plural groups" means two or more (including two).

In the description of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., "connected" or "connected" of a mechanical structure may refer to a physical connection, e.g., a physical connection may be a fixed connection, e.g., a fixed connection by a fastener, such as a screw, bolt, or other fastener; the physical connection can also be a detachable connection, such as a mutual clamping or clamping connection; the physical connection may also be an integral connection, for example, a connection made by welding, gluing or integrally forming the connection. "connected" or "connected" of circuit structures may mean not only physically connected but also electrically connected or signal-connected, for example, directly connected, i.e., physically connected, or indirectly connected through at least one intervening component, as long as the circuits are in communication, or communication between the interiors of two components; signal connection may refer to signal connection through a medium, such as radio waves, in addition to signal connection through circuitry. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, the battery cell may include a lithium ion battery, a lithium sulfur battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in this application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are not limited in the embodiment of the application.

The battery monomer comprises a shell, an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive pole piece, a negative pole piece and an isolating membrane. The battery cell mainly depends on metal ions to move between the positive pole piece and the negative pole piece to work. The positive pole piece includes anodal mass flow body and anodal active substance layer, and anodal active substance layer coats in anodal mass flow body's surface, and the mass flow body protrusion on the anodal active substance layer of uncoated positive active substance layer is in the mass flow body of coating anodal active substance layer, and the mass flow body on the anodal active substance layer of uncoated positive is as anodal utmost point ear. 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 pole piece includes negative current collector and negative active material layer, and the negative active material layer coats in the surface of negative current collector, and the mass flow body protrusion in the mass flow body of coating the negative active material layer of uncoated negative active material layer, the mass flow body of uncoated negative active material layer is as negative pole utmost point ear. 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 fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the isolation film can be PP or PE, etc. In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

In the box need be packed into with battery module into at the assembly process usually, the box opening up adopts grabbing device to snatch battery module, puts into from the opening after transporting battery module to the opening top of box again. However, the grabbing device in the prior art often causes the battery module to fall off in the process of grabbing the battery module, which not only causes damage to the battery module, but also may threaten the safety of objects or pedestrians below the battery module.

The inventor is to a grabbing device among the prior art research discovery, grabbing device commonly used now generally pushes away two clamping jaw horizontal migration and gets the battery module through the cylinder of two horizontal directions directly, this mode is though simple structure and cost are lower, however, because at the in-process of transporting battery module, the clamping jaw is in the state of centre gripping battery module for a long time, in this period, the cylinder can make the cylinder diminish to the top thrust of clamping jaw because the air supply is not enough sometimes, especially when grabbing device carries battery module quick travel, the battery module extrudees the clamping jaw under the effect of inertial force and makes the clamping jaw push away the cylinder, because the cylinder has taken place slack to the top of clamping jaw, so the clamping jaw can push away the piston rod of cylinder and make the piston rod withdrawal, the clamping jaw is opened, and then lead to battery module being thrown away and take place to drop.

In view of this, the embodiment of the application provides a battery module grabbing device, through the flexible a pair of clamping jaw of drive along the second direction of a pair of cylinder along the first direction and move and press from both sides tightly or release battery module, because second direction and first direction nonparallel, therefore, even the tolerance supply at the in-process cylinder of grabbing battery module is not enough, the cylinder also is difficult to be promoted by the clamping jaw and is flexible, thereby when making the cylinder not initiatively move, the cylinder is difficult to receive the effect of clamping jaw and drives the clamping jaw passively and move along the second direction, the auto-lock of clamping jaw has been realized, the fastness that the subassembly snatched battery module is got to the clamp has been improved, the probability that battery module dropped has been reduced.

As shown in fig. 1 and fig. 2, the battery module gripping device provided in the embodiment of the present application includes a gripping assembly 10, the gripping assembly 10 includes at least one pair of cylinders 101 and at least one pair of clamping jaws 102, the pair of cylinders 101 extends and retracts along a first direction to drive the pair of clamping jaws 102 to approach or move away from each other along a second direction to grip or release the battery module 1, and the second direction Q is not parallel to the first direction P.

The air cylinder 101 may be replaced in some embodiments with a hydraulic cylinder, an electric cylinder, or the like. In addition, the cylinder 101 may be a unidirectional cylinder 101 or a bidirectional cylinder 101, which is not limited in the embodiment of the present application.

The two clamping jaws 102 of any pair of clamping jaws 102 are oppositely arranged along the second direction Q, so that when the two clamping jaws 102 move towards each other along the second direction Q, the two clamping jaws 102 can approach each other, and when the two clamping jaws 102 move away from each other along the second direction Q, the two clamping jaws 102 can move away from each other. The shape of the clamping jaw 102 can be set according to actual needs, for example, the side view shape of the clamping jaw 102 can be approximately "L" shape, or approximately "Contraband" shape, or approximately "S" shape, or the like, or the part of the clamping jaw 102 is one of the above shapes, and the matching state of the clamping jaw 102 and the battery module 1 in the clamping state can be various, for example, two opposite sides of the battery module 1 are provided with grooves, one side of the clamping jaw 102 opposite to the battery module 1 is provided with a convex part, and in the clamping state, the convex part is located in the groove, so that when the battery module 1 has a tendency of falling vertically, the convex part and the groove are mutually limited, and the battery module 1 is ensured not to fall; of course, the protrusions and the grooves may be interchanged, that is, the protrusions are disposed on two opposite sides of the battery module 1, the grooves are disposed on one opposite side of the clamping jaw 102 relative to the battery module 1, and the protrusions are also located in the grooves in the clamped state. For another example, the opposite sides of the battery module 1 are provided with first flanges, and the side of the clamping jaw 102 opposite to the battery module 1 is provided with second flanges, which are positioned under the first flanges in the clamped state, so that when the battery module 1 falls, the first flanges are supported by the second flanges, thereby preventing the battery module 1 from falling.

The first direction P refers to any linear direction, and any motion toward either end of the linear direction can be considered as moving along the first direction P, as long as the direction is parallel to the extension direction of the linear direction, for example, the first direction P may refer to the direction of the X axis in the coordinate system, and the object may be said to move along the first direction P both when moving toward the + X axis and moving toward the-X axis. Similarly, the second direction Q is defined the same as the first direction P, except that the second direction Q and the first direction P represent linear directions that are not parallel to each other.

In the process of grabbing battery module 1, when the piston rod of a pair of cylinder 101 withdraws and drives a pair of clamping jaw 102 and be close to each other along second direction Q, a pair of clamping jaw 102 can press from both sides tight battery module 1, and after battery module grabbing device transported battery module 1 to the right place, the piston rod of a pair of cylinder 101 stretches out, drives a pair of clamping jaw 102 and keeps away from each other along second direction Q to release battery module 1. Of course, the piston rod may also extend out to drive the clamping jaw 102 to clamp the battery module 1, and the piston rod retracts to drive the clamping jaw 102 to release the battery module 1, which is not limited in the embodiment of the present application.

When a pair of clamping jaws 102 is used for clamping the battery module 1, the clamping jaws 102 are subjected to the reaction force of the battery module 1 along the second direction Q, and the second direction Q is not parallel to the first direction P, therefore, the direction of the action force of the clamping jaws 102 on the cylinder 101 is not parallel to the first direction P, even if the air quantity of the cylinder 101 is not enough in the process of grabbing the battery module 1, the cylinder 101 is difficult to push and stretch by the clamping jaws 102, so that when the cylinder 101 does not act actively, the cylinder 101 is difficult to receive the action of the clamping jaws 102 and passively drives the clamping jaws 102 to move along the second direction Q, the self-locking of the clamping jaws 102 is realized, the firmness of the clamping assembly 10 for grabbing the battery module 1 is improved, and the falling probability of the battery module 1 is reduced.

As shown in fig. 3 and 4, in some embodiments, the gripping assembly 10 further includes a support 103, the cylinder body of the air cylinder 101 is fixed on the support 103 along the first direction P, a sliding slot 104 is provided on the support 103 along the second direction Q, and the gripping jaw 102 is engaged with the sliding slot 104 and moves along the sliding slot 104 under the driving of the piston rod of the air cylinder 101.

The supporting member 103 has two functions, one is a cylinder body for fixing the cylinder 101, and the other is to limit the clamping jaw 102 through the sliding groove 104, so as to further move the clamping jaw 102 along a specific direction. The fixing manner between the cylinder 101 and the support 103 may be a bolt connection, a snap connection, or the like.

The slide groove 104 cooperates with a portion of the clamping jaw 102, by which is meant a tight fit, for example, when the cross section of the slide groove 104 perpendicular to the second direction Q is rectangular, the cross section of at least a portion of the clamping jaw 102 perpendicular to the second direction Q is also rectangular, and the rectangular outer surface of the support 103 cooperates with the rectangular inner surface of the cross section of the slide groove 104.

Through adopting the scheme, the cylinder body of the cylinder 101 is fixed on the support part 103 along the first direction P, the telescopic direction of the cylinder 101 is further limited, the moving direction of the clamping jaw 102 is further limited by the arrangement of the sliding groove 104, so that the moving directions of the cylinder 101 and the clamping jaw 102 are more accurate, and the self-locking effect of the clamping jaw 102 is better.

As shown in fig. 4, in some embodiments, the side wall of the sliding slot 104 is provided with a first waist-shaped hole 105 along a first direction P, and the clamping jaw 102 is provided with a second waist-shaped hole 106 along a third direction T, where the third direction T is not parallel to and perpendicular to the first direction P and the second direction Q; the gripping assembly 10 further includes a roller 107 connected to the piston rod of the cylinder 101, the roller 107 penetrates through the first kidney-shaped hole 105 and the second kidney-shaped hole 106, and the cylinder 101 drives the roller 107 to move in the first kidney-shaped hole 105 along the first direction P, so as to drive the gripping jaw 102 to move in the second direction Q through the second kidney-shaped hole 106.

The first kidney-shaped hole 105 is a long strip-shaped hole, and the first kidney-shaped hole 105 is arranged along the first direction P, which means that the size of the first kidney-shaped hole 105 in the first direction P is much larger than the size of the first kidney-shaped hole 105 in other directions, so that the roller 107 can move in the first direction P in the first kidney-shaped hole 105.

The second kidney-shaped holes 106 are elongated holes extending along the third direction T, and the size of the second kidney-shaped holes 106 in the third direction T is much larger than the size of the second kidney-shaped holes 106 in other directions, so that the rollers 107 can move along the third direction T relative to the second kidney-shaped holes 106.

The roller 107 is a cylindrical member, and since the roller 107 penetrates through the first waist-shaped hole 105 and the second waist-shaped hole 106, the first waist-shaped hole 105 and the second waist-shaped hole 106 have an intersection region, where the intersection region refers to an overlapping region of projections of the first waist-shaped hole 105 and the second waist-shaped hole 106 in the depth direction, when the first waist-shaped hole 105 is not parallel to the second waist-shaped hole 106, an area of the intersection region of the first waist-shaped hole 105 and the second waist-shaped hole 106 is small, when the second waist-shaped hole 106 slides along the second direction in the sliding groove 104 along with the clamping jaw 102, a position of the intersection region is constantly changed, and positions of the first waist-shaped hole 105 and the second waist-pressing hole corresponding to the intersection region are also constantly changed.

Under the driving of the cylinder 101, the roller 107 moves in the first waist-shaped hole 105 along the first direction P, during the moving process of the roller 107, at the intersection of the second waist-shaped hole 106 and the first waist-shaped hole 105, the roller 107 abuts against the side wall of the second waist-shaped hole 106 in the width direction, and since the position of the second waist-shaped hole 106 in the sliding slot 104 is different, the intersection position of the second waist-shaped hole 106 and the first waist-shaped hole 105 is also different, therefore, when the roller 107 moves in the first waist-shaped hole 105 along the first direction P, in order to change the intersection position of the second waist-shaped hole 106 and the first waist-shaped hole 105, the clamping jaw 102 is pushed by the roller 107 to move in the sliding slot 104 along the second direction Q, thereby achieving the effect of clamping or releasing the battery module 1.

As shown in fig. 4, in some embodiments, the second direction Q is perpendicular to the first direction P.

When the clamping jaw 102 is pushed in the second direction Q by the counterforce of the battery module 1, the force from the clamping jaw 102 on the cylinder 101 is perpendicular to the extending and retracting direction of the piston rod, so that the difficulty of extending and retracting of the cylinder 101 is increased, the probability that the cylinder 101 is pushed by the clamping jaw 102 to extend and retract when the air supply amount is insufficient is further reduced, and the self-locking capability of the clamping assembly 10 is enhanced.

As shown in fig. 4, in some embodiments, the grasping assembly 10 further includes a cover plate 108, and the cover plate 108 covers the first kidney-shaped hole 105 to prevent impurities from entering the first kidney-shaped hole 105.

The outer portion of the first kidney-shaped hole 105 refers to the outer portion of the side wall of the sliding slot 104, i.e. the side of the first kidney-shaped hole 105 away from the sliding slot 104.

The cover plate 108 covers the first waist-shaped hole 105 to prevent sundries from entering the first waist-shaped hole 105 or entering the second waist-shaped hole 106 through the first waist-shaped hole 105, so that the sundries are prevented from blocking the roller 107 from moving in the first waist-shaped hole 105 or the second waist-shaped hole 106, and further the clamping of the clamping jaw 102 on the battery module 1 is affected.

As shown in fig. 4, in some embodiments, the cover plate 108 is provided with a guide slot 109 at a side close to the first kidney-shaped hole 105, and the guide slot 109 is arranged along the first direction P; the rollers 107 are connected to a guide block 110, and the guide block 110 is engaged with the guide groove 109 to provide a guide for the movement of the rollers 107.

The guide groove 109 is a straight groove extending along the first direction P, the cross section of the guide groove 109 may be rectangular, arc-shaped or V-shaped, and accordingly, the cross section of the guide block 110 is the same as that of the guide groove 109, and the outer surface of the guide block 110 is at least partially capable of engaging with the inner surface of the guide groove 109.

By adopting the above scheme, while the cylinder 101 pushes the roller 107 to move along the first kidney-shaped hole 105, the guide block 110 also moves in the guide groove 109 along the first direction P, so as to perform double guidance on the movement of the roller 107 and prevent the roller 107 from shifting, and meanwhile, the cover plate 108 can also be used for limiting the position of the roller 107 in the depth direction of the first kidney-shaped hole 105 and preventing the roller 107 from moving away from the second kidney-shaped hole 106 and disengaging from the second kidney-shaped hole 106, so that the clamping jaw 102 is loosened and cannot stably clamp the battery module 1.

As shown in fig. 5, in some embodiments, the battery module grasping apparatus further includes a suction assembly 20; the suction assembly 20 comprises a suction cup 201 and a vacuum pipeline, the suction cup 201 is used for sucking the battery module 1, and the vacuum pipeline is used for providing an air source for the suction cup 201.

The suction cup 201 is a broad-sense suction cup 201, and the suction cup 201 can be called as a device that can suck the battery module 1 by using the principle of negative pressure suction, for example, in some embodiments, the suction cup 201 can include a conical rubber suction head, and the battery module 1 can be sucked on the suction head by sucking the gas in the suction head through a vacuum pipeline, in other embodiments, the suction cup 201 can further include a plate-shaped member, the plate-shaped member is provided with an air hole, after one end of the air hole abuts against the battery module 1, the gas in the air hole is sucked by using the vacuum pipeline, so that a negative pressure state is formed in the air hole, and the battery module 1 can be sucked on the plate-shaped member. The embodiment of the present application does not limit the specific structure of the suction cup 201.

The vacuum pipeline is an airflow control system for controlling the airflow of the suction cup 201, and at least comprises an air pump and a valve, and is used for enabling negative pressure to occur between the suction cup 201 and the battery module 1 to adsorb the battery module 1, or breaking the negative pressure between the suction cup 201 and the battery module 1 to lower the battery module 1.

The vacuum lines are not shown in fig. 5, only the adapters 203 connected to the suction cups 201 are shown, it being understood that the adapters 203 are used to connect the vacuum lines.

The clamping assembly 10 and the suction assembly 20 perform double grasping of the battery module 1, further preventing the battery module 1 from falling down during the transportation.

Because battery module 1 probably is the battery module 1 that the square-shell electricity core is constituteed, also can be the battery module 1 that the cylinder electricity core is constituteed, when battery module 1 includes the cylinder electricity core, the surface of sucking disc 201 bottom and battery module 1 contact is probably not the plane very much, if sucking disc 201 bottom is still the plane this moment, then not only cause between sucking disc 201 and the battery module 1 because the contact surface is less and inhale and connect unstablely, still probably make unable formation airtight space between sucking disc 201 and the battery module 1, thereby it absorbs battery module 1 to be difficult to produce the adsorption affinity.

As shown in fig. 5, 6 and 7, in order to solve the above-mentioned problems, in some embodiments, the suction cup 201 is provided at the bottom thereof with a contour part 202, and the contour part 202 has a shape corresponding to the shape of the corresponding position of the battery module 1 for increasing the contact area between the suction cup 201 and the battery module 1.

The fitting means that the surface of the profiling portion 202 can be attached to the corresponding position of the battery module 1 due to the similarity of the shape of the surface of the profiling portion 202 and the shape of the corresponding position of the battery module 1, that is, the profiling portion 202 is in surface contact with the corresponding position of the battery module 1, for example, the position on the battery module 1 corresponding to the profiling portion 202 is the cylindrical surface of the cylindrical core, and the surface of the profiling portion 202 is set to be the cylindrical surface matched with the position, so that the surface of the profiling portion 202 can be in surface contact with the cylindrical surface of the cylindrical core in the process of sucking the battery module 1.

After the shape profiling part 202 matched with the shape of the corresponding position of the battery module 1 is arranged at the bottom of the sucker 201, the sucker 201 can be contacted with the battery module 1 through the profiling part 202, so that the contact area between the sucker 201 and the battery module 1 is increased, the sucker 201 can be smoothly sucked and connected with the battery module 1, the sucking and connecting is more stable, and the battery module 1 is further prevented from falling off in the carrying process.

In some embodiments, the bottom of the suction cup 201 is provided with a non-metal layer for preventing the suction cup 201 from damaging the battery module 1.

The non-metal layer can be a teflon coating, and can also be other plastic material layers, such as a rubber layer, a plastic layer, a silica gel layer, a resin layer and the like. It should be noted that a relatively firm and reliable bonding method needs to be adopted between the nonmetal layer and the bottom of the suction cup 201 to prevent the nonmetal layer from falling off and the battery module 1 from falling off in the process of sucking the battery module 1, for example, the nonmetal layer and the suction cup 201 can be integrally formed.

The non-metal layer blocks the metal part of the suction cup 201 from directly contacting the battery module 1, thereby preventing the suction cup 201 from damaging the battery module 1 during the contact process.

In addition, when the non-metal layer is a plastic material layer, the plastic material can strengthen the sealing between the suction cup 201 and the battery module 1 through the deformation of the plastic material, so that the suction connection between the battery module 1 and the suction cup 201 is firmer.

As shown in fig. 7, in some embodiments, the vacuum circuit includes a plurality of air paths, each air path controlling a respective portion of the area of the chuck 201.

In fig. 7, different pipe joints 203 represent connection points of vacuum pipes, in fig. 7, the pipe joints 203 labeled with the same letter are used for connecting to the same gas circuit, for example, two pipe joints 203 labeled with a in the drawing are used for connecting to a first gas circuit, two pipe joints 203 labeled with b are used for connecting to a second gas circuit, two pipe joints 203 labeled with c are used for connecting to a third gas circuit, two pipe joints 203 labeled with d are used for connecting to a fourth gas circuit, and two pipe joints 203 labeled with e are used for connecting to a fifth gas circuit, wherein the first gas circuit, the second gas circuit, the third gas circuit, the fourth gas circuit, and the fifth gas circuit are only used for distinguishing different gas circuits, of course, in the actual use process, the number of the gas circuits and the area controlled by each gas circuit may be set according to different use states, and the embodiment of the present application does not limit this.

Each air path can be provided with an independent vent pipeline, an air pump and a valve and is used for controlling the air flow direction and the on-off of the air path. When a gas circuit breaks down and becomes invalid, other gas circuits make the suction cup 201 still have the adsorption force, thereby keeping the adsorption capacity to the battery module 1 and preventing the battery module 1 from dropping in the carrying process.

As shown in fig. 5, 6 and 7, in some embodiments, the suction assembly 20 further includes a connection plate 204, and an elastic assembly 205 and a sensor 206 are disposed between the suction cup 201 and the connection plate 204; the inductor 206 is used to sense the distance between the suction cup 201 and the connection plate 204 during the lowering of the battery module 1 to determine whether the battery module 1 is in contact with the bottom of the case.

The elastic component 205 can be a spring, a wave-shaped gasket, a plastic gasket and the like, the elastic gasket can be a sheet or a column, one end of the elastic component 205 is connected to the bottom of the connecting plate 204, the other end of the elastic component is connected to the top of the suction cup 201, in the process that the suction cup 201 carries the battery module 1 to be placed, after the bottom of the battery module 1 contacts the box body, the suction cup 201 stops descending, and when the connecting plate 204 cannot immediately stop descending, the elastic component 205 can serve as a buffer element between the connecting plate 204 and the suction cup 201, so that the battery module 1 is prevented from being extruded by the connecting plate 204.

The sensor 206 may be a proximity sensor, a distance sensor or a position sensor, or similar element capable of acquiring a change in distance between two components and converting this signal into an electrical signal.

When the battery module 1 is not in contact with the bottom of the case, the elastic member 205 is stretched to have a longer length under the gravity of the battery module 1, so that the distance between the connecting plate 204 and the suction cup 201 is longer; when the battery module 1 contacts the bottom of the case and continues to move downward, the length of the elastic member 205 is short, that is, the distance between the connection plate 204 and the suction plate 201 is shortened, because the case bears part or all of the weight of the battery module 1. When the sensor 206 senses that the distance between the connection plate 204 and the suction cup 201 is shortened, it indicates that the battery module 1 has contacted the bottom of the case, and the suction assembly 20 releases the suction force accordingly to release the suction connection relationship between the suction cup 201 and the battery module 1, so that the battery module 1 completely falls into the case.

Through setting up elastic component 205 and inductor 206, can form the buffering at the in-process of transferring battery module 1, and can control degree and the speed that battery module 1 descends more accurately through the feedback of inductor 206, with release adsorption affinity after battery module 1 descends to target in place, prevent to release adsorption affinity and make battery module 1 drop and take place the damage before battery module 1 descends to target in place, and prevent that the device from continuously descending and the extrusion damages battery module 1 after battery module 1 descends to target in place, the battery has been protected betterly.

In the actual use process, the clamping assemblies 10 generally clamp both sides of the battery module 1, and the suction assemblies 20 generally suck the top of the battery module 1, so when the height of the battery module 1 is less than the height of the internal space of the case, the clamping assemblies 10 may interfere with the side walls of the case before the battery module 1 completely contacts the bottom of the case.

As shown in fig. 8, in order to solve the above interference problem, in some embodiments, the battery module gripping device further includes a lifting mechanism 30, and the lifting mechanism 30 is used for driving the gripping assembly 10 to move up and down relative to the suction assembly 20.

The lifting mechanism 30 may be, for example, a lifting cylinder 101, a screw mechanism, or the like, and fig. 8 schematically illustrates the lifting cylinder 101 as an example.

Through adopting the scheme, when battery module 1 will transfer to target in place soon, press from both sides clamping jaw 102 of getting subassembly 10 and loosen, only drive battery module 1 through absorbing subassembly 20 and descend, elevating system 30 control is got subassembly 10 and is risen after that to avoid pressing from both sides the lateral wall of getting subassembly 10 and box and take place to interfere, ensure that battery module 1 can transfer to target in place smoothly. When a battery module 1 needs to be clamped and taken down, the lifting mechanism 30 controls the clamping assembly 10 to descend.

The arrangement of the lifting mechanism 30 can prevent the clamping assembly 10 from interfering with the side wall of the box body, and the battery module 1 is ensured to be smoothly transferred.

As shown in fig. 8, in some embodiments, the battery module capturing apparatus further includes an image capturing mechanism 40, and the image capturing mechanism 40 is used for capturing the environmental conditions to adjust the position of the battery module 1.

The image capturing mechanism 40 may be, for example, a camera, a video camera, etc., and is configured to convert an environmental image captured by the image capturing mechanism 40 in real time into an electrical signal and transmit the electrical signal to the control system, and the control system adjusts the position of the battery module 1 according to the image data, so as to smoothly transport the battery module 1 in place and accurately drop the battery module to a preset position in the box.

In addition, whether an obstacle exists in the moving direction of the battery module 1 can be judged according to the image acquired by the image acquiring mechanism 40, so that the transportation direction of the battery module 1 can be adjusted in time.

The battery module grabbing device can be used for grabbing the battery module 1 in any procedure in the battery manufacturing process, so that the working efficiency of the battery manufacturing equipment is higher, and the working safety is higher.

To sum up, this application embodiment is through flexible a pair of clamping jaw 102 of a pair of cylinder 101 along first direction P drive and move and press from both sides tightly or release battery module 1 along second direction Q, because second direction Q and first direction P nonparallel, therefore, even the tolerance of in-process cylinder 101 of snatching battery module 1 supplies inadequately, cylinder 101 also is difficult to be promoted and is flexible by clamping jaw 102, thereby make when cylinder 101 does not actively act, cylinder 101 is difficult to receive clamping jaw 102's effect and passively drives clamping jaw 102 along second direction Q motion, the auto-lock of clamping jaw 102 has been realized, the fastness that subassembly 10 snatchs battery module 1 is got to the clamp has been improved, the probability that battery module 1 dropped has been reduced.

Those of skill in the art will understand that while some embodiments herein include certain features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. The utility model provides a battery module grabbing device which characterized in that, the device includes:

the clamping assembly comprises at least one pair of cylinders and at least one pair of clamping jaws, the cylinders stretch along a first direction to drive the clamping jaws to mutually approach or depart from each other along a second direction to clamp or release the battery module, and the second direction is not parallel to the first direction.

2. The battery module grabbing device of claim 1, wherein the clamping assembly comprises a support member, a cylinder body of the air cylinder is fixed on the support member along the first direction, a sliding groove is formed in the support member along the second direction, and the clamping jaw is matched with the sliding groove and moves along the sliding groove under the driving of a piston rod of the air cylinder.

3. The battery module grabbing device of claim 2, wherein a first waist-shaped hole is formed in a side wall of the sliding groove along the first direction, and a second waist-shaped hole is formed in the clamping jaw along a third direction, wherein the third direction is not parallel to or perpendicular to the first direction and the second direction;

the clamping assembly further comprises a roller connected with a piston rod of the cylinder, the roller penetrates through the first waist-shaped hole and the second waist-shaped hole, the cylinder drives the roller to move in the first waist-shaped hole along the first direction, and the clamping jaw is driven to move in the second direction through the second waist-shaped hole.

4. The battery module capturing apparatus of claim 1, wherein the second direction is perpendicular to the first direction.

5. The battery module grabbing device of claim 3, wherein the clamping assembly further comprises a cover plate, and the cover plate covers the first kidney-shaped hole and is used for preventing sundries from entering the first kidney-shaped hole.

6. The battery module grabbing device of claim 5, wherein a guide groove is formed in one side of the cover plate close to the first kidney-shaped hole, and the guide groove is formed in the first direction;

the roller is connected with a guide block, and the guide block is matched with the guide groove and used for providing guidance for the movement of the roller.

7. The battery module capturing apparatus of any of claims 1-6, wherein the apparatus further comprises a suction assembly; the suction assembly comprises a suction disc and a vacuum pipeline, the suction disc is used for sucking the battery module, and the vacuum pipeline is used for providing an air source for the suction disc.

8. The battery module gripping device according to claim 7, wherein the suction cup is provided at a bottom thereof with a profiling portion having a shape corresponding to a corresponding position of the battery module for increasing a contact area of the suction cup with the battery module.

9. The battery module grasping device according to claim 7, wherein the suction cup is provided at a bottom thereof with a non-metal layer for preventing the suction cup from damaging the battery module.

10. The battery module gripping device according to claim 7, wherein the vacuum line comprises a plurality of air paths, and each air path controls a partial area of the suction cup.

11. The battery module grabbing device of claim 7, wherein the suction assembly further comprises a connecting plate, and an elastic assembly and an inductor are arranged between the suction cup and the connecting plate; the sensor is used for sensing the distance between the suction disc and the connecting plate during the process of putting down the battery module so as to determine whether the battery module is contacted with the bottom of the box body.

12. The battery module grabbing device of claim 7, further comprising a lifting mechanism, wherein the lifting mechanism is used for driving the clamping assembly to lift relative to the suction assembly.

13. The battery module capturing apparatus of claim 1, wherein the apparatus further comprises an image capturing mechanism for capturing environmental conditions to adjust the position of the battery module.

14. A battery manufacturing apparatus, characterized by comprising the battery module grasping device according to any one of claims 1 to 13.