CN220420636U

CN220420636U - Lithium battery riveting sealing device

Info

Publication number: CN220420636U
Application number: CN202320358720.XU
Authority: CN
Inventors: 孙文怀
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2024-01-30
Anticipated expiration: 2033-03-01

Abstract

The utility model relates to a riveting and sealing device for a lithium battery, which comprises a locking mechanism and a riveting mechanism. The locking mechanism is used for locking the piezoelectric core to be riveted and comprises a positioning mechanism, and the positioning mechanism can be adjusted according to the size of the piezoelectric core to be riveted. The riveting mechanism is arranged on one side of the locking mechanism and is suitable for riveting the battery cell, and the riveting mechanism comprises a riveting jig which is detachably connected with the riveting mechanism. The device has simple integral structure and exquisite design, and utilizes the adjustable positioning mechanism to adapt to the battery cells with different sizes, thereby completing the riveting and sealing operation of the battery cells. Meanwhile, the problem that the existing riveting machine for the battery is insufficient in compatibility of the battery to be processed, the requirement of quick change of the battery cannot be met, and the working efficiency can be improved.

Description

Lithium battery riveting sealing device

Technical Field

The utility model relates to the technical field of battery processing, in particular to a riveting and sealing device for a lithium battery.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. The chemical characteristics of lithium metal are very active, so that the processing, storage and use of lithium metal have very high requirements on environment. With the rapid and diversified development of new energy industry, the demand and variety of batteries are increasing, and a great deal of new technology and new technology are emerging.

The manufacturing process of the battery pack is very numerous, and there are a plurality of processes, in which sealing is a key process for manufacturing the battery, and a riveting operation is generally performed in advance using a riveting press, followed by laser welding to complete the sealing operation. The riveting machine uses punching machine equipment and special connecting mould to form a stress-free concentrated internal inlaid round dot with certain tensile and shear strength according to cold extrusion deformation of the plate material, and can connect two or more layers of plates with different materials and different thicknesses. However, the existing riveting press for the battery has insufficient compatibility for the battery to be processed, and can not meet the requirement of quick change of the shape, so that the production efficiency is low.

Therefore, how to provide a riveting and sealing device for lithium battery to adapt to battery cells with different specifications, so as to achieve the purpose of quick mold change, is a technical problem to be solved by the human being in the field.

Disclosure of Invention

The utility model provides a riveting sealing device for a lithium battery, which aims to solve the problems that the existing riveting press for the battery is insufficient in compatibility of the battery to be processed and can not meet the requirement of quick change.

The utility model provides a riveting and sealing device for a lithium battery, which comprises a locking mechanism and a riveting mechanism.

The locking mechanism is used for locking the piezoelectric core to be riveted and comprises a positioning mechanism, and the positioning mechanism can be adjusted according to the size of the piezoelectric core to be riveted.

The riveting mechanism is arranged on one side of the locking mechanism and is suitable for riveting the battery cell, and the riveting mechanism comprises a riveting jig which is detachably connected with the riveting mechanism.

In some embodiments, the positioning mechanism includes a positioning platform, a first positioning plate, a second positioning plate, and a positioning block.

The positioning platform is horizontally placed, and the top of the positioning platform is provided with a first positioning plate and a second positioning plate.

The first locating plate and the second locating plate are mutually perpendicular, the first locating plate can be abutted with one side of the body length of the piezoelectric core to be riveted, the second locating plate can be abutted with one side of the body width of the piezoelectric core to be riveted, and a locating clamping groove is formed for locating the piezoelectric core to be riveted.

The locating block is arranged on one side opposite to the first locating plate and can move towards or back to the first locating plate so as to fit the piezoelectric core to be riveted.

In some embodiments, the bottom of the positioning mechanism is further provided with a sliding mechanism.

The sliding mechanism comprises a fixed base, a translation guide rail and a support frame.

Be provided with translation guide rail on the unable adjustment base, the bottom setting of support frame can slide along translation guide rail in translation guide rail.

In some embodiments, the locking mechanism includes a hold down device and a stop block.

The compressing device is arranged on the top surface of the positioning platform, can move close to or far away from the positioning platform and is used for compressing the piezoelectric core to be riveted.

The stopper sets up in riveting mechanism and is close to location platform one side.

In some embodiments, the riveting mechanism includes a servo motor, a screw, a sliding jig base, and a fixed jig base.

An output shaft of the servo motor is connected with the screw rod. The sliding jig base is sleeved on the screw rod through a nut. The fixed jig base is fixedly connected to the screw rod.

In some embodiments, the sliding jig base and the fixed jig base are detachably connected with the two riveting jigs respectively.

In some embodiments, a speed reducer is further disposed on the servo motor.

In some embodiments, the servo motor is coupled to the lead screw via a coupling.

In some embodiments, the riveting mechanism is two, and the axes of the two riveting mechanisms are perpendicular to each other.

In some embodiments, the riveting device further comprises a supporting table for bearing the riveting mechanism.

The utility model has the beneficial effects that: according to the lithium battery riveting and sealing device, the riveting operation of the lithium battery is completed by arranging the locking mechanism and the riveting mechanism. The locking device is provided with a positioning mechanism which can be adjusted according to the size of the to-be-riveted battery cell, so that the battery cell is positioned and locked, and the purpose of quick mold changing is realized. The device has simple integral structure and exquisite design, and utilizes the adjustable positioning mechanism to adapt to the battery cells with different sizes, thereby completing the riveting and sealing operation of the battery cells. Meanwhile, the problem that the existing riveting machine for the battery is insufficient in compatibility of the battery to be processed, the requirement of quick change of the battery cannot be met, and the working efficiency can be improved.

Drawings

FIG. 1 is a schematic view of some embodiments of a lithium battery riveting and sealing apparatus according to the present utility model;

FIG. 2 is a schematic structural view of a riveting mechanism of the lithium battery riveting and sealing device shown in FIG. 1;

fig. 3 is a schematic view of another view angle structure of the riveting mechanism of the riveting sealing apparatus for lithium batteries shown in fig. 2.

110, a compressing device; 120. a limiting block; 210. positioning a platform; 220. a first positioning plate; 230. a second positioning plate; 240. a positioning block; 300. a riveting mechanism; 310. a servo motor; 320. a screw rod; 330. a sliding jig base; 340. fixing a jig base; 350. a speed reducer; 360. a coupling; 370. transverse riveting jig; 380. longitudinal riveting jig; 410. a fixed base; 420. translating the guide rail; 430. a support frame; 500. a support table; 600. and riveting the piezoelectric core.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," "upper," "lower," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model or simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model provides a riveting and sealing device for a lithium battery, which can solve the problem of insufficient compatibility of the battery to be processed by the riveting machine for the existing battery.

Referring to fig. 1, 2 and 3, a lithium battery riveting and sealing apparatus includes a locking mechanism and a riveting mechanism 300.

The locking mechanism is used for locking the piezoelectric core 600 to be riveted, and comprises a positioning mechanism, and can be adjusted according to the size of the piezoelectric core 600 to be riveted.

The riveting mechanism 300 is arranged on one side of the locking mechanism and is suitable for riveting the battery cell, and comprises a riveting jig which is detachably connected with the riveting mechanism 300.

Specifically, the locking mechanism is communicated with the riveting mechanism 300, so that after the battery cell is locked and positioned by the locking mechanism, the end to be riveted of the battery cell is sent into the riveting mechanism 300, and the riveting operation is realized. The locking mechanism can compress the riveting core 600, prevent the vertical deviation in the riveting process, and limit the side surface where the body length and the body width of the riveting core 600 are located by the positioning mechanism, so that the purpose of fixing the core is achieved, and the positioning mechanism can be adjusted to adapt to the cores with different sizes.

It can be understood that the positioning mechanism can be adjusted, solves the problem of insufficient compatibility of the battery to be processed in the prior art, can be adjusted according to battery cells with different sizes, and is convenient for changing the model. Meanwhile, in order to adapt to the processing of different batteries, the riveting jig of the riveting mechanism 300 is detachably connected with the riveting mechanism 300, so that the jig can be replaced conveniently for processing riveting of different types of batteries. The device provided by the utility model has a simple integral structure and an exquisite design, solves the problems that the existing riveting press for the battery is insufficient in compatibility of the battery to be processed, cannot meet the requirement of quick change of the battery, and can improve the working efficiency.

In some embodiments of the present utility model, the positioning mechanism includes a positioning platform 210, a first positioning plate 220, a second positioning plate 230, and a positioning block 240.

The positioning platform 210 is horizontally placed, and a first positioning plate 220 and a second positioning plate 230 are disposed on top of the positioning platform.

The first positioning plate 220 and the second positioning plate 230 are arranged perpendicular to each other, the first positioning plate 220 can be abutted with one side of the body length of the piezoelectric core 600 to be riveted, and the second positioning plate 230 can be abutted with one side of the body width of the piezoelectric core 600 to be riveted, and a positioning clamping groove is formed for positioning the piezoelectric core 600 to be riveted.

The positioning block 240 is disposed on an opposite side of the first positioning plate 220, and can move toward or away from the first positioning plate 220 to attach the piezoelectric core 600 to be riveted.

Specifically, the length of the first positioning plate 220 is greater than that of the second positioning plate 230, the first positioning plate 220 is suitable for positioning a side where the body length of the rivet core 600 is located, and the corresponding second positioning plate 230 is suitable for positioning a side where the body width of the rivet core 600 is located. The first positioning plate 220 and the second positioning plate 230 cooperate to limit the position of the electric core, and cooperate with the positioning block 240 to clamp the riveting electric core 600, so as to avoid displacement in the horizontal direction and further influence the riveting operation. The positioning block 240 is disposed on an opposite side of the first positioning plate 220, and is close to the second positioning plate 230, and can move toward or away from the first positioning plate 220 to fit the riveting core 600, so as to define the position of the riveting core 600.

It can be appreciated that the positioning block 240 can be adjusted, so as to adapt to the battery cells with different sizes, simplify the mold changing operation in the riveting process, improve the working efficiency and improve the compatibility of the whole device. The first positioning plate 220 and the second positioning plate 230 of the present utility model may also be provided as positioning plates capable of sliding adjustment, so that the adjustment function can be implemented on the side surfaces of the battery cells.

In some embodiments of the utility model, the bottom of the positioning mechanism is further provided with a sliding mechanism.

The sliding mechanism includes a stationary base 410, a translating guide 420, and a support 430.

The fixed base 410 is provided with a translation guide rail 420, and the bottom of the support frame 430 is disposed in the translation guide rail 420 and can slide along the translation guide rail 420.

Specifically, the fixed base 410 is disposed on the ground, and the top surface of the fixed base 410 is provided with a chute to form a translation guide 420. The bottom corners of the support frame 430 are disposed within the translation rail 420 and are capable of sliding along the rail. The top of the supporting frame 430 is fixedly connected with the bottom of the positioning platform 210, and when the supporting frame 430 slides, the positioning platform 210 can be driven to slide, so that the purpose of approaching or separating from the riveting mechanism 300 is achieved.

It will be appreciated that the rivet core 600 can be easily removed or filled when the slide mechanism is adjusted to move the positioning mechanism away from the riveting mechanism 300; when the sliding mechanism is adjusted to enable the positioning mechanism to be close to the riveting mechanism 300, the riveting core 600 can enter the riveting working area of the riveting mechanism 300, so that riveting operation is realized.

In some embodiments of the present utility model, the locking mechanism includes a hold down 110 and a stop block 120.

The pressing device 110 is disposed on the top surface of the positioning platform 210, and can move close to or away from the positioning platform 210, so as to press the piezoelectric core 600 to be riveted.

The limiting block 120 is disposed on a side of the riveting mechanism 300 close to the positioning platform 210.

In some embodiments of the present utility model, the riveting mechanism 300 includes a servo motor 310, a screw 320, a sliding jig base 330, and a fixed jig base 340.

An output shaft of the servo motor 310 is connected with a screw 320. The sliding jig base 330 is sleeved on the screw rod 320 through a nut. The fixing jig base 340 is fixedly connected to the screw 320.

Specifically, the riveting mechanism 300 of the present utility model is completed by the cooperation of the servo motor 310 and the screw 320, and the screw 320 is used to convert the rotational motion into the linear motion. When the servo motor 310 is turned on, the output shaft thereof starts to rotate, and the nut on the screw 320 is engaged with the thread of the screw 320, so that the rotational motion is converted into the linear motion. The screw 320 of the present embodiment is preferably a ball screw 320, and when the ball screw is used as the driving body, the nut is converted into linear motion along with the rotation angle of the screw 320 according to the lead of the corresponding specification, and the passive workpiece sliding fixture base 330 can be connected with the nut through the nut seat, so as to realize the corresponding linear motion.

It can be understood that the servo motor 310 starts to work, and the screw rod 320 converts the rotation motion of the output shaft into a linear motion, so as to drive the sliding jig base 330 to move to one side of the fixed jig base 340, and realize riveting operation. When the servo motor 310 rotates reversely, the sliding jig base 330 is moved away from the fixed jig base 340, so that the workpiece separation is realized, and the riveting operation is finished.

It will be appreciated that ball screws are the most commonly used drive elements in machine tools and precision machines, and their primary function is to convert rotational motion into linear motion, or torque into axially repeated force, while having the characteristics of high precision, reversibility, low frictional resistance, and high efficiency.

In some embodiments of the present utility model, the sliding jig base 330 and the fixed jig base 340 are detachably connected to two riveting jigs, respectively.

In some embodiments of the present utility model, a speed reducer 350 is further disposed on the servo motor 310.

It will be appreciated that the speed reducer 350 on the servo motor 310 acts to reduce the rotational speed and increase the torque. Simultaneously, the speed is reduced, the inertia of the load is reduced, and the operation precision of each step of the motor is improved.

In some embodiments of the present utility model, the servo motor 310 is coupled to the lead screw 320 via a coupling 360.

It will be appreciated that the coupling 360 functions to couple two shafts in different mechanisms for common rotation and torque transfer, while the coupling 360 also has the functions of damping, vibration attenuation and improved shafting dynamics.

In some embodiments of the present utility model, the riveting mechanism 300 is two, and the axes of the two riveting mechanisms 300 are perpendicular to each other.

Specifically, the two riveting mechanisms 300 of the present embodiment are disposed perpendicular to each other, so as to implement the riveting operation for the vertical direction and the horizontal direction of the riveting die 600. Meanwhile, the riveting jig can be detached from the riveting base, so that riveting requirements of different battery cells are met, the corresponding riveting jig is replaced, the overall compatibility of the device is improved, and the working efficiency is improved.

In some embodiments of the present utility model, a support stand 500 is further included for carrying the riveting mechanism 300.

The working flow of the utility model is as follows:

firstly, the riveting core 600 is placed in the positioning platform 210, and is close to the first positioning plate 220 and close to the second positioning plate 230, so that the long side of the riveting core 600 is attached to the first positioning plate 220, and the short side of the riveting core 600 is attached to the second positioning plate 230. And then the positioning block 240 is adjusted, so that the positioning block 240 is close to the side edge of the riveting core 600, and the pressing device 110 is locked, so that the positioning operation is completed after the riveting core 600 is completely positioned. The sliding mechanism is pushed to enable the positioning platform 210 to be close to the riveting mechanism 300 and to be attached to the limiting block 120, so that the riveting core 600 is located in the working range of the riveting mechanism 300, and the positioning platform 210 is locked. The two riveting mechanisms 300 are started, the riveting operation is simultaneously performed on the transverse direction and the vertical direction of the riveting core 600, one end of the riveting operation is kept for a period of time, rebound after riveting is prevented, and complete riveting is achieved. After the riveting is completed, the positioning platform 210 is pushed out, each positioning device is sequentially canceled, the riveting core 600 is taken out, and the riveting processing is completed.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.

Claims

1. A lithium battery riveting and sealing device, comprising:

the locking mechanism is used for locking the piezoelectric core to be riveted and comprises a positioning mechanism which can be adjusted according to the size of the piezoelectric core to be riveted;

the riveting mechanism is arranged on one side of the locking mechanism and is suitable for riveting the battery cell, and comprises a riveting jig which is detachably connected with the riveting mechanism;

the positioning mechanism comprises a positioning platform, a first positioning plate, a second positioning plate and a positioning block;

the positioning platform is horizontally arranged, and a first positioning plate and a second positioning plate are arranged at the top of the positioning platform; the first positioning plate and the second positioning plate are mutually vertically arranged, the first positioning plate can be abutted with one side of the body length of the piezoelectric core to be riveted, and the second positioning plate can be abutted with one side of the body width of the piezoelectric core to be riveted, and a positioning clamping groove is formed for positioning the piezoelectric core to be riveted;

the positioning block is arranged on the opposite side of the first positioning plate and can move towards or back to the first positioning plate so as to attach the piezoelectric core to be riveted.

2. The lithium battery riveting and sealing apparatus according to claim 1, wherein a sliding mechanism is further provided at the bottom of the positioning mechanism;

the sliding mechanism comprises a fixed base, a translation guide rail and a support frame;

the fixed base is provided with a translation guide rail, and the bottom of the support frame is arranged in the translation guide rail and can slide along the translation guide rail.

3. The lithium battery riveting and sealing apparatus according to any one of claims 1-2, wherein the locking mechanism comprises a pressing device and a stopper;

the pressing device is arranged on the top surface of the positioning platform, can move close to or far away from the positioning platform and is used for pressing the piezoelectric core to be riveted;

the limiting block is arranged on one side, close to the positioning platform, of the riveting mechanism.

4. The lithium battery riveting and sealing apparatus according to claim 1, wherein the riveting mechanism comprises a servo motor, a screw rod, a sliding jig base and a fixing jig base;

an output shaft of the servo motor is connected with the screw rod;

the sliding jig base is sleeved on the screw rod through a nut;

the fixed jig base is fixedly connected to the screw rod.

5. The lithium battery riveting and sealing apparatus according to claim 4, wherein the sliding jig base and the fixing jig base are detachably connected with the two riveting jigs, respectively.

6. The lithium battery riveting and sealing device according to claim 4, wherein a speed reducer is further arranged on the servo motor.

7. The lithium battery riveting and sealing apparatus according to claim 4, wherein the servo motor is connected with the screw rod through a coupling.

8. The lithium battery riveting and sealing apparatus according to claim 4, wherein the number of the riveting mechanisms is two, and the axes of the two riveting mechanisms are mutually perpendicular.

9. The lithium battery riveting and sealing apparatus of claim 1, further comprising a support stand for carrying the riveting mechanism.