CN112454255A - Positioning and pressing clamp for lithium battery cover plate and control method of positioning and pressing clamp - Google Patents

Abstract

The invention discloses a positioning and pressing clamp for a lithium battery cover plate and a control method of the positioning and pressing clamp, and relates to the field of battery press-fitting. The positioning and pressing clamp for the lithium battery cover plate replaces a hammer to knock the cover plate into the shell, so that the working efficiency of the lithium battery cover plate into the shell and the product quality summarized in the processing process of the lithium battery are improved; the invention provides a control method of a positioning and pressing clamp of a lithium battery cover plate.

Description

Positioning and pressing clamp for lithium battery cover plate and control method of positioning and pressing clamp

Technical Field

The invention relates to the field of battery press-fitting, in particular to a positioning and pressing clamp for a lithium battery cover plate and a control method of the positioning and pressing clamp.

Background

The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, and because the chemical characteristics of the lithium metal are very active, the lithium metal has very high requirements on the environment in processing, storage and use, and the lithium battery becomes the mainstream at present along with the development of scientific technology.

In the production process of the lithium battery cell, the lithium battery needs to be fixed at first, and the pressing clamp is used for completing the cover plate and entering the shell. In the actual production course of working, because the size model of electric core is different, to the lithium cell of every model size, adopt with it size complex press down anchor clamps and accomplish the apron and go into the shell, operate inconveniently, reduced the work efficiency that the lithium cell apron goes into the shell.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention provides a positioning pressing clamp for a lithium battery cover plate and a control method thereof, aiming at the problem that the pressing clamp cannot meet the requirement of the lithium battery cover plate with different sizes and models for entering the shell, and the positioning pressing clamp can be suitable for the lithium battery cover plate with various sizes and models for entering the shell.

2. Technical scheme

Therefore, the technical scheme adopted by the invention is as follows:

the utility model provides a lithium cell apron location pressing fixture, is including carrying loading platform, pressing means, actuating mechanism and positioning mechanism, it is used for placing the lithium cell to carry the loading platform, positioning mechanism is used for fixing a position the lithium cell on the objective table, actuating mechanism promotes pressing means presses the lithium cell apron, presses the lithium cell apron into the shell.

In this scheme, place the dry cell combination of lithium cell in the aluminum hull the inside, form electric core combination, place lithium cell electricity core combination on the objective table, make lithium cell head towards pressing means, it is different according to the size of lithium cell, positioning mechanism works, move to the objective table direction, make positioning mechanism and lithium cell side contact, the completion is to the fixed and location of lithium cell on the objective table, actuating mechanism drive pressing means is close to the objective table, make pressing means press the lithium cell clamp plate that is located on the objective table, press the pressure equipment of aluminum hull apron entering, assemble, make things convenient for the welding of subsequent handling. Through the work of actuating mechanism and positioning mechanism, can satisfy the requirement that different size models lithium cell apron pressed into the shell.

Optionally, the device further comprises a base, wherein the base is used for bearing the loading platform, the pressing mechanism, the driving mechanism and the positioning mechanism. The loading platform, the pressing mechanism, the driving mechanism and the adjusting mechanism are all arranged on the base.

Optionally, the object stage includes base, first fixed plate and the second fixed plate of symmetry setting on the base, first fixed plate sets up between the base, with pressing mechanism sets up relatively, the second fixed plate sets up one side of base, the region that base, first fixed plate and second fixed plate enclose is used for fixed lithium cell. Place the dry cell combination of lithium cell in the aluminum hull the inside, form the electricity core combination, place the lithium cell electricity core combination on the base of objective table, make lithium cell head orientation pressing means, first fixed plate and second fixed plate fix the lithium cell electricity core combination on the base, it is different according to the size of lithium cell, positioning mechanism work, move to the objective table direction, make positioning mechanism and lithium cell side contact, and push into the lithium cell in the region that first fixed plate and second fixed plate enclose, under the effect of first fixed plate and second fixed plate and positioning mechanism's joint fixity, can avoid the lithium cell to take place to remove on the objective table.

Optionally, the positioning mechanism includes an air cylinder and a limiting plate, the limiting plate is disposed at an end of a piston rod of the air cylinder, and the limiting plate is disposed opposite to the second fixing plate. The work of control unit control positioning mechanism, control the cylinder motion promptly, the cylinder removes to the objective table direction, the limiting plate and the lithium cell side contact of cylinder piston rod tip to in the region that first fixed plate and second fixed plate enclose with the lithium cell propelling movement, the afterbody of lithium cell receives the fixed restriction of first fixed plate, the both sides limit of lithium cell receives the common fixed of second fixed plate and limiting plate respectively, can avoid the lithium cell to take place to remove on the objective table.

Optionally, the pressing mechanism includes a slide rail, a slider, a pressing plate, and a sliding slot, the slide rail is symmetrically disposed on the base and located outside the base, the slide rail is provided with the sliding slot for the slider to slide, and the pressing plate is disposed on the slider. After positioning mechanism accomplished the fixed back to the lithium cell, actuating mechanism work promotes according to the clamp plate, makes and realizes sliding in the spout along on the slide rail according to the slider of clamp plate bottom, makes and presses down the lithium cell clamp plate according to the clamp plate, presses the pressure equipment of aluminum hull apron into, reaches the purpose of pressing down the lithium cell apron.

Optionally, a first threaded hole is formed in the sliding rail, a plurality of second threaded holes matched with the first threaded holes are formed in the base, and the sliding block is locked to the base through a bolt.

Optionally, the driving mechanism includes a servo electric cylinder, a third fixing plate and a force measuring sensor, the servo electric cylinder includes a motor and a lead screw, the lead screw is fixed on the third fixing plate, the third fixing plate is arranged on the base, the end of the lead screw is connected with one end of the force measuring sensor, the other end of the force measuring sensor is separated from the pressing mechanism, and the force measuring sensor is used for measuring an actual value of the pressing force between the end of the lead screw and the pressing mechanism. The servo electric cylinder works, the servo electric cylinder is a module product which is designed by integrating a servo motor and a lead screw, the rotary motion of the servo motor is converted into linear motion, the servo motor drives the lead screw to drive a force transducer at the end part of the lead screw to move towards a pressing mechanism, force is transmitted to a pressing plate, the force transducer works according to the working principle that when the force transducer transmits the force to the pressing plate, the force transducer is also subjected to the force of the pressing plate, a strain gauge adhered to an elastic body on the force transducer deforms along with the force transducer to cause resistance change, and the resistance change enables a formed Sihuden bridge to lose balance and output an electric quantity signal which is changed in linear proportion with external force. The force is transmitted to the force measuring sensor through the lead screw, and then the lithium battery cover plate is pressed, so that the pressing plate slides on the sliding rail. Through setting up force cell sensor, the actual value of extrusion force between test lead screw tip that can be detailed and the pressing plate replaces not having concrete accurate pressure value numerical value with the hammer to strike, can improve the work efficiency that lithium cell electricity core combination goes into the shell, guarantees the levelness of lithium cell apron, improves the product quality in the lithium cell course of working.

Optionally, the device further comprises a protection frame, and the protection frame is arranged on the base. Through setting up the protection frame, play the guard action to lithium cell apron location pressure equipment anchor clamps.

Optionally, the first fixing plate and the second fixing plate have the same height. The height of first fixed plate and second fixed plate is unanimous, and the lithium cell can be fixed comparatively steadily in the region that encloses, prevents that the lithium cell from moving on the objective table.

A control method of a positioning and pressing clamp for a lithium battery cover plate comprises any one of the above positioning and pressing clamp for the lithium battery cover plate, and comprises the following steps:

(1) the positioning mechanism drives the limiting plate to push the lithium battery tightly,

(2) the driving mechanism drives the force measuring sensor connected with the end part of the lead screw to move towards the pressing mechanism,

(3) the force cell sensor measures the lead screw tip and presses the actual value of extrusion force between the pressing plate, and then makes the force cell sensor promote to press the pressing plate and impress the lithium cell shell with the apron in, accomplishes electric core income shell.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) according to the embodiment of the invention, according to different sizes of lithium batteries, the positioning mechanism works and moves towards the direction of the objective table, so that the positioning mechanism is in contact with one side edge of the lithium battery to complete the fixation and positioning of the lithium battery on the objective table, the driving mechanism drives the pressing mechanism to approach the objective table, so that the pressing mechanism presses the lithium battery pressing plate on the objective table, the aluminum shell cover plate is pressed in, the assembly is carried out, and the welding of subsequent processes is facilitated. Through the work of actuating mechanism and positioning mechanism, can satisfy the requirement that different size models lithium cell apron pressed into the shell.

(2) According to the embodiment of the invention, the positioning mechanism, the objective table, the base, the first fixing plate and the second fixing plate are arranged on the base, the lithium battery cell combination is placed on the objective table, the head of the lithium battery faces to the pressing mechanism, the lithium battery cell combination is fixed on the base through the first fixing plate and the second fixing plate, the positioning mechanism works and moves towards the objective table according to different sizes of the lithium battery, the positioning mechanism is enabled to be in contact with one side edge of the lithium battery, the fixing and the positioning of the lithium battery on the objective table are completed, the lithium battery is pushed into an area defined by the first fixing plate and the second fixing plate, and the lithium battery can be prevented from moving on the objective table under the combined fixing action of the first fixing plate, the second fixing plate and the positioning mechanism.

(3) According to the embodiment of the invention, the servo electric cylinder is driven to work, the servo electric cylinder drives the lead screw to drive the force measuring sensor at the end part of the lead screw to move towards the pressing plate and transmit force to the pressing plate, and the force measuring sensor is used for measuring the actual value of the extrusion force between the end part of the lead screw and the pressing mechanism. Through setting up force cell sensor, the actual value of extrusion force between test lead screw tip that can be detailed and the pressing plate replaces not having concrete accurate pressure value numerical value with the hammer to strike, guarantees the levelness of lithium cell apron, improves the product quality in the lithium cell course of working.

(4) According to the control method provided by the embodiment of the invention, the positioning mechanism is controlled to drive the limiting plate to tightly push the lithium battery, the driving mechanism drives the force sensor connected with the end part of the lead screw to move towards the pressing mechanism, the force sensor measures the actual value of the extrusion force between the end part of the lead screw and the pressing plate, and then the force sensor pushes the pressing plate to press the cover plate into the lithium battery shell, so that the battery cell is placed into the shell, and the working efficiency of the lithium battery cell combination and the shell placement can be improved.

Drawings

Fig. 1 is a front view of a positioning and pressing fixture for a lithium battery cover plate according to an embodiment of the present invention;

fig. 2 is a top view of a positioning and pressing fixture for a lithium battery cover plate according to an embodiment of the present invention;

FIG. 3 is a schematic view of a second threaded hole in the base according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a positioning and pressing fixture for a lithium battery cover plate according to an embodiment of the present invention.

The symbols in the drawings illustrate that:

1. a base; 2. a loading stage; 21. a base; 22. a first fixing plate; 23. a second fixing plate; 3. a pressing mechanism; 31. a slide rail; 311. a first threaded hole; 312. a second threaded hole; 313. a bolt; 32. a slider; 33. a pressing plate; 34. a chute; 4. a drive mechanism; 41. a servo electric cylinder; 411. a motor; 412. a lead screw; 42. a third fixing plate; 43. a force sensor; 5. a positioning mechanism; a 51 cylinder; 52. a limiting plate; 6. a protective frame.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Example 1

As shown in fig. 1-4, this embodiment provides a lithium battery cover plate location pressing fixture, including carrying platform 2, pressing means 3, actuating mechanism 4 and positioning means 5, carrying platform 2 is used for placing the lithium cell, positioning means 5 is used for fixing a position the lithium cell on carrying platform 2, actuating mechanism 4 promotes pressing means 3 presses the lithium battery cover plate, presses the lithium battery cover plate into the shell.

In this embodiment, place the dry cell combination of lithium cell in the aluminum hull, form the electric core combination, place the lithium cell electricity core combination on objective table 2, make lithium cell head towards pressing means 3, it is different according to the size of lithium cell, positioning mechanism 5 works, move to 2 directions of objective table, make positioning mechanism 5 and lithium cell side contact, the completion is to the fixed of lithium cell on objective table 2, actuating mechanism 4 drives pressing means 3 and is close to objective table 2, make pressing means 3 press the lithium cell clamp plate that is located objective table 2, press the aluminum hull apron pressure equipment into, assemble, make things convenient for the welding of subsequent handling. Through the work of the driving mechanism 4 and the positioning mechanism 5, the requirement that lithium battery cover plates of different sizes and models are pressed into the shell can be met.

As shown in fig. 1 to 4, an alternative embodiment is to further include a base 1, where the base 1 is used to carry a loading platform 2, a pressing mechanism 3, a driving mechanism 4 and a positioning mechanism 5.

As shown in fig. 2 to 4, in an alternative embodiment, the object stage 2 includes a base 21, a first fixing plate 22 and a second fixing plate 23 symmetrically disposed on the base 1, the first fixing plate 22 is disposed between the base 21 and disposed opposite to the pressing mechanism 3, the second fixing plate 23 is disposed on one side of the base 21, and an area surrounded by the base 21, the first fixing plate 22 and the second fixing plate 23 is used for fixing a lithium battery. Place the dry electric core combination of lithium cell in the aluminum hull inside, form electric core combination, place lithium cell electric core combination on the base 21 of objective table 2, make lithium cell head towards pressing means 3, first fixed plate 22 and second fixed plate 23 fix lithium cell electric core combination on base 21, it is different according to the size of lithium cell, positioning mechanism 5 work, move to objective table 2 direction, make positioning mechanism 5 and lithium cell side contact, and push into the lithium cell in the region that first fixed plate 22 and second fixed plate 23 enclose, under the corporate fixation effect of first fixed plate 22 and second fixed plate 23 and positioning mechanism 5, can avoid the lithium cell to take place to remove on objective table 2.

As shown in fig. 2 and 3, in an alternative embodiment, the positioning mechanism 5 includes an air cylinder 51 and a limit plate 52, the limit plate 52 is disposed at a piston rod end of the air cylinder 51, and the limit plate 52 is disposed opposite to the second fixing plate 23. The work of 6 control positioning mechanism 5 of the control unit, control cylinder 51 motion promptly, cylinder 51 removes to objective table 2 direction, limiting plate 52 and the lithium cell side contact of cylinder 51 piston rod tip, and push into the lithium cell in the region that first fixed plate 22 and second fixed plate 23 enclose, the afterbody of lithium cell receives the fixed restriction of first fixed plate 22, the both sides limit of lithium cell receives the common fixed of second fixed plate 23 and limiting plate 52 respectively, can avoid the lithium cell to take place to remove on objective table 2.

As shown in fig. 1 to 4, in an alternative embodiment, the pressing mechanism 3 includes a slide rail 31, a slider 32, a pressing plate 33, and a slide groove 34, the slide rail 31 is symmetrically disposed on the base 1 and located outside the base 21, the slide rail 31 is provided with the slide groove 34 for sliding the slider 32, and the pressing plate 33 is disposed on the slider 32. After the positioning mechanism 5 finishes fixing the lithium battery, the driving mechanism 4 works to push the pressing plate 33, so that the sliding block 32 at the bottom of the pressing plate 33 slides in the sliding groove 34 along the sliding rail 31, the pressing plate 33 presses the lithium battery pressing plate, and the aluminum shell cover plate is pressed in, thereby achieving the purpose of pressing the lithium battery cover plate.

As shown in fig. 2 and fig. 3, in an optional embodiment, a first threaded hole 311 is provided on the slide rail 31, a plurality of second threaded holes 312 matching with the first threaded hole 311 are provided on the base 1, and the slider 32 is locked on the base 1 by bolts 313.

As shown in fig. 1 to 4, in an alternative embodiment, the driving mechanism 4 includes an electric servo cylinder 41, a third fixing plate 42, and a load cell 43, the electric servo cylinder 41 includes a motor 411 and a lead screw 412, the lead screw 412 is fixed on the third fixing plate 42, the third fixing plate 42 is disposed on the base 1, an end of the lead screw 412 is connected to one end of the load cell 43, the other end of the load cell 43 is separated from the pressing mechanism 3, and the load cell 43 is configured to measure an actual value of the pressing force between the end of the lead screw 412 and the pressing mechanism 3. The servo electric cylinder 41 works, the servo electric cylinder 41 is a module product which integrally designs a servo motor 411 and a lead screw 412, the rotary motion of the servo motor 411 is converted into linear motion, the servo motor 411 drives the lead screw 412 to drive a force transducer 43 at the end part of the lead screw 412 to move towards the pressing mechanism 3, force is transmitted to a pressing plate 33 of the pressing mechanism 3, the working principle of the force transducer 43 is that when the force transducer 43 transmits the force to the pressing plate 33 of the pressing mechanism 3, the force transducer is also subjected to the force of the pressing plate 33, a strain gauge adhered to an elastic body on the force transducer 43 deforms along with the force transducer to cause resistance change, and the resistance change causes a formed Wheatstone bridge to lose balance and output an electric quantity signal which is linearly changed in proportion to external force. The force is transmitted to the load cell 43 through the lead screw 412, and the lithium battery cover plate is pressed, so that the pressing plate 33 slides on the slide rail 31. Through setting up force cell 43, the actual value of the extrusion force between test lead screw 412 tip that can be detailed and the pressing plate 33 replaces not having concrete definite pressure value numerical value with the hammer to strike, can improve the work efficiency that lithium cell electricity core combination goes into the shell, guarantees the levelness of lithium cell apron, improves the product quality in the lithium cell course of working.

As shown in fig. 1 to 3, an optional embodiment further includes a protection frame 6, and the protection frame 6 is disposed on the base 1. Through setting up protection frame 6, play the guard action to lithium cell apron location pressure equipment anchor clamps.

As shown in fig. 4, in an alternative embodiment, the heights of the first fixing plate 22 and the second fixing plate 23 are the same. The first fixing plate 22 and the second fixing plate 23 have the same height, and the enclosed area can stably fix the lithium battery and prevent the lithium battery from moving on the object stage 2.

Example 2

As shown in fig. 1 to 4, this embodiment provides a control method for a positioning and pressing fixture for a lithium battery cover plate, including a positioning and pressing fixture for a lithium battery cover plate according to any one of the above technical solutions, including the following steps:

(1) the positioning mechanism 5 drives the limiting plate 52 to push the lithium battery tightly,

(2) the driving mechanism 4 drives the load cell 43 connected to the end of the lead screw 412 to move toward the pressing mechanism 3,

(3) the force sensor 43 measures the actual value of the pressing force between the end of the screw 412 and the pressing plate 33, so that the force sensor 43 pushes the pressing plate 33 to press the cover plate into the lithium battery shell, and the battery cell entering into the shell is completed.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (10)

1. The utility model provides a clamp is pressed in lithium cell apron location, its characterized in that, is including carrying loading platform, pressing means, actuating mechanism and positioning mechanism, carry the loading platform and be used for placing the lithium cell, positioning mechanism is used for fixing a position the lithium cell on the objective table, actuating mechanism promotes pressing means presses the lithium cell apron, presses the lithium cell apron into in the shell.

2. The positioning and pressing fixture for the lithium battery cover plate as claimed in claim 1, further comprising a base for carrying the loading platform, the pressing mechanism, the driving mechanism and the positioning mechanism.

3. The positioning and pressing fixture for the cover plate of the lithium battery as claimed in claim 2, wherein the stage comprises bases symmetrically arranged on the base, a first fixing plate and a second fixing plate, the first fixing plate is arranged between the bases and is opposite to the pressing mechanism, the second fixing plate is arranged on one side of the bases, and an area surrounded by the bases, the first fixing plate and the second fixing plate is used for fixing the lithium battery.

4. The positioning and pressing clamp for the lithium battery cover plate according to claim 3, wherein the positioning mechanism comprises a cylinder and a limiting plate, the limiting plate is arranged at the end of a piston rod of the cylinder, and the limiting plate is arranged opposite to the second fixing plate.

5. The positioning and pressing fixture for the lithium battery cover plate as claimed in claim 3, wherein the pressing mechanism comprises a slide rail, a slide block, a pressing plate and a slide groove, the slide rail is symmetrically arranged on the base and located at the outer side of the base, the slide rail is provided with the slide groove for the slide block to slide, and the pressing plate is arranged on the slide block.

6. The positioning and pressing clamp for the lithium battery cover plate as claimed in claim 5, wherein the slide rail is provided with a first threaded hole, the base is provided with a plurality of second threaded holes matched with the first threaded holes, and the slider is locked on the base through bolts.

7. The positioning and pressing fixture for the lithium battery cover plate as recited in claim 1, wherein the driving mechanism comprises a servo electric cylinder, a third fixing plate and a load cell, the servo electric cylinder comprises a motor and a lead screw, the lead screw is fixed on the third fixing plate, the third fixing plate is arranged on a base, the end of the lead screw is connected with one end of the load cell, the other end of the load cell is separated from the pressing mechanism, and the load cell is used for measuring the actual value of the pressing force between the end of the lead screw and the pressing mechanism.

8. The positioning and pressing clamp for the lithium battery cover plate as claimed in claim 2, further comprising a protection frame, wherein the protection frame is arranged on the base.

9. The positioning and pressing fixture for the lithium battery cover plate as claimed in claim 3, wherein the first fixing plate and the second fixing plate have the same height.

10. A control method for a positioning and pressing fixture for a lithium battery cover plate, which is characterized by comprising the positioning and pressing fixture for a lithium battery cover plate as claimed in any one of claims 1 to 9, and comprising the following steps:

(1) the positioning mechanism drives the limiting plate to push the lithium battery tightly,

(2) the driving mechanism drives the force measuring sensor connected with the end part of the lead screw to move towards the pressing mechanism,

(3) the force cell sensor measures the lead screw tip and presses the actual value of extrusion force between the pressing plate, and then makes the force cell sensor promote to press the pressing plate and impress the lithium cell shell with the apron in, accomplishes electric core income shell.

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