CN220086128U - Cell pressurizing device with movable lower pressure plate - Google Patents

Abstract

The utility model discloses a cell pressurizing device with a movable lower pressure plate, which comprises a pressure plate assembly movably arranged on a rack of the cell pressurizing device along a pressurizing direction, wherein the pressure plate assembly comprises a base plate and the lower pressure plate, the upper surface of the base plate is provided with a sliding rail mechanism, the lower pressure plate is arranged on the sliding rail mechanism, the lower pressure plate can move along a transverse pressurizing direction through the sliding rail mechanism, a space is arranged between the lower pressure plate and the upper surface of the base plate, the upper surface of the base plate is provided with a pressurizing position, a supporting piece is arranged on the pressurizing position, and the supporting piece provides a first supporting force of counter pressurizing force for the lower pressure plate under the pressurizing state. In the cell pressurizing device, the lower pressing plate can move to the outside of the hot press so as to be convenient for taking and discharging, and in addition, the lower pressing plate is prevented from applying pressure to the slide rail mechanism through the protection mechanism, so that the damage of the slide rail mechanism is avoided.

Description

Cell pressurizing device with movable lower pressure plate

Technical Field

The utility model relates to the field of hot presses, in particular to a cell pressurizing device with a movable lower pressure plate.

Background

In the process of battery production, it is necessary to perform hot pressing treatment on the battery, such as: hot press molding, hot press packaging and hot press forming are all important processes in battery production. In order to effectively improve the production efficiency of hot-press shaping of lithium batteries and reduce the production cost, multi-layer hot-press shaping equipment is generated. In order to be convenient for get the material, the bottom of present multilayer hot press is provided with slide rail mechanism, is convenient for remove the outside of hot press with the holding down plate to be convenient for get the material, however in such structure, slide rail mechanism receives the pressure repeatedly for a long time, thereby leads to its damage, makes the holding down plate slip difficulty, seriously can lead to the damage of whole equipment.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the cell pressurizing device with the movable lower pressure plate, wherein the lower pressure plate can move to the outside of a hot press so as to be convenient for taking and blanking, and in addition, the pressure transmitted to the slide rail mechanism by the lower pressure plate is reduced or prevented by the supporting block, so that the damage of the slide rail mechanism is avoided.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a mobilizable electric core pressure device of holding down plate, includes along the pressure direction movably setting up the clamp plate subassembly in electric core pressure device's frame, the clamp plate subassembly includes base plate and holding down plate, the base plate upper surface is equipped with a slide rail mechanism, the holding down plate sets up on slide rail mechanism, the holding down plate can follow horizontal pressure direction through slide rail mechanism and remove, have the interval between holding down plate and the base plate upper surface, the base plate upper surface has the pressurization position, the pressurization position is provided with support piece, support piece provides the first holding power of a counter-pressure for the holding down plate under the pressurization state.

As a further improvement of the above technical solution, the lower platen is movably disposed on the substrate along the pressing direction by a floating assembly, and the floating assembly provides a second supporting force for the lower platen so that the lower platen forms a movable gap with the supporting member in a non-pressing state.

As a further improvement of the above technical solution, the floating assembly includes an elastic structure, and the elastic structure provides a second supporting force to the lower pressing plate so that the lower pressing plate forms a movable gap with the supporting member in the non-pressurized state.

As a further improvement of the technical scheme, the sliding rail mechanism comprises a second sliding rail and a second sliding block which is connected to the second sliding rail in a sliding manner along the transverse pressurizing direction, and the elastic structure is connected between the lower pressing plate and the second sliding block.

As a further improvement of the technical scheme, the frame comprises a support column, a first sliding rail and a first sliding block which is connected to the first sliding rail in a sliding manner along the pressurizing direction are arranged on the support column, and the pressing plate assembly is connected with the first sliding block.

As a further improvement of the technical scheme, the pressing plate assemblies are arranged in a plurality along the pressurizing direction, and gravity counteracting assemblies are arranged between the adjacent pressing plate assemblies and can provide support in the anti-gravity direction for the pressing plate assemblies.

As a further improvement of the above technical solution, the gravity counteracting assembly includes a plurality of jacking cylinders uniformly distributed around the periphery of the platen assembly.

As a further improvement of the technical scheme, the feeding side of the pressing plate assembly is provided with a testing assembly for connecting or cutting off a testing loop between the battery cell to be tested and the external short circuit tester.

As a further improvement of the technical scheme, a pressurizing power assembly is arranged above the pressing plate assembly, and the pressurizing power assembly provides pressure to drive the pressing plate assembly to move along the pressurizing direction.

As a further improvement of the above technical solution, the pressurizing power assembly includes a servo motor and a push rod, and the servo motor drives the push rod to move along the pressurizing direction/counter-pressurizing direction through a ball screw.

The beneficial effects of the utility model are as follows:

according to the utility model, the support piece is arranged at the pressurizing position of the lower pressure plate, and the support piece provides a first support force for the lower pressure plate against the pressurizing force in the pressurizing state, so that the situation that the sliding rail mechanism is crushed during the pressing of the battery cell is prevented, and the moving stability of the lower pressure plate is improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of a movable cell pressurizing device with a lower platen according to the present utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the structure of the pressurized power assembly of the present utility model;

FIG. 4 is a schematic view of the structure of the frame of the present utility model;

FIG. 5 is a schematic view of a slide rail mechanism according to the present utility model;

FIG. 6 is a schematic view of a guard mechanism of the present utility model;

fig. 7 is a schematic view of the structure of the gravity cancellation assembly of the present utility model.

Reference numerals:

1. a pressurized power assembly; 11. a push rod; 12. a ball screw; 13. a servo motor; 14. a gear box;

2. a frame; 21. a base; 22. a top plate; 23. a support column; 24. a first slide rail; 25. a first slider;

3. a platen assembly; 31. a support plate; 32. an upper press plate; 33. a lower pressing plate; 34. a cushion block; 35. a second slide rail; 36. a second slider; 37. an elastic structure; 371. a bottom plate; 372. a connecting plate; 373. a spring fixing seat; 374. a compression spring; 38. a horizontal pushing cylinder;

4. a gravity counteracting assembly; 41. jacking the air cylinder;

5. and testing the assembly.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Referring to fig. 1 and 2, a cell pressurizing device with a movable lower pressure plate includes a pressurizing power assembly 1, a frame 2, a pressure plate assembly 3 and a gravity counteracting assembly 4, the pressure plate assembly 3 includes a base plate, an upper pressure plate 32, a lower pressure plate 33 and a slide rail mechanism, the lower pressure plate 33 is movably disposed on the base plate in a lateral pressurizing direction by the slide rail mechanism, a space is provided between the lower pressure plate 33 and an upper surface of the base plate, the upper surface of the base plate has a pressurizing position, a supporting member is disposed on the pressurizing position, and the supporting member provides a first supporting force of a counter pressurizing force for the lower pressure plate 33 under the pressurizing state.

The working principle of the embodiment is as follows: the slide rail mechanism drives the lower pressure plate 33 to extend out of the support column 23, the battery core is placed on the lower pressure plate 33, the slide rail mechanism drives the lower pressure plate 33 to retract to a battery core to-be-pressed position, the gravity counteracting assembly 4 retracts, the pressurizing power assembly 1 outputs pressure, the gravity counteracting assembly 4 extends out to counteract the dead weight of the upper pressure plate 32, the battery core is pressed, the gravity counteracting assembly 4 retracts to the pressurizing power assembly 1 to stop pressurizing after the battery core is pressurized to a certain pressure and a period of time lasts, the gravity counteracting assembly 4 extends out and lifts the support plate 31 to separate the upper pressure plate 32 from the lower pressure plate 33, and the slide rail mechanism drives the lower pressure plate 33 assembly to extend to a battery core to-be-fetched position to wait for fetching.

Referring to fig. 1, 2 and 4, in the present embodiment, the frame 2 includes a base 21, a top plate 22 and support columns 23 connected therebetween, the support columns 23 have four, and the upper and lower ends of the four support columns 23 are respectively disposed at four corners of the top plate 22 and the base 21, so that a good supporting effect can be achieved, and the stability of the structure is improved. The four support columns 23 are respectively provided with a first slide rail 24, each first slide rail 24 is connected with a plurality of first slide blocks 25 in a sliding manner, and the pressing plate assembly 3 is fixed on each first slide block 25 so that the pressing power assembly 1 can conveniently drive the pressing power assembly to move along the pressing direction to press the battery cell, and the stability of the battery cell during pressing is improved through the guiding of the first slide rail 24.

Referring to fig. 2 and 3, in the present embodiment, the pressurizing power mechanism includes a servo motor 13, a ball screw 12 and a push rod 11, the servo motor 13 and the ball screw 12 are mounted on a top plate 22, a gear box 14 is connected between the servo motor 13 and the ball screw 12, and a spindle of the servo motor 13 drives a screw rod of the ball screw 12 to rotate through the gear box 14, so as to drive a nut of the ball screw 12 to do linear motion. The push rod 11 is connected to a nut of the ball screw 12, and the bottom of the push rod 11 abuts against the top of the support plate 31 located uppermost. Therefore, when the servo motor 13 drives the ball screw 12 to operate, the push rod 11 can be driven to move along the pressurizing direction/counter-pressurizing direction, and when the push rod 11 moves along the pressurizing direction, the upper pressure plate 32 in the pressure plate assembly 3 is pressurized, so that the pressurization of the battery cell is realized.

Referring to fig. 2 and 5, in the present embodiment, the platen assembly 3 further includes a support plate 31 for supporting the upper platen 32 and the lower platen 33, the support plate 31 is fixedly connected with the first sliders 25 on the four support columns 23, and the support plate 31 is in a horizontal state, so that the support plate 31 can move in a vertical direction without bias.

In this embodiment, the four pressing plate assemblies 3 are disposed, the uppermost pressing plate assembly 3 includes a supporting plate 31 and an upper pressing plate 32 mounted on the lower surface of the supporting plate 31, the middle pressing plate assembly 3 includes two pressing plates 33 mounted on the upper surface of the supporting plate 31, and the lowermost pressing plate assembly 3 includes a base 21 and a lower pressing plate 33 mounted on the upper surface of the base 21, so that when the pressing power assembly 1 applies a pressing force to the uppermost pressing plate assembly 3, the adjacent pressing plates 32 and the lower pressing plates 33 of the four pressing plate assemblies 3 can press the battery cells. In the present embodiment, the support plate 31 and the base 21, on the upper surface of which the lower platen 33 is mounted, serve as a substrate.

Specifically, referring to fig. 5, the slide rail mechanism includes two parallel second slide rails 35 and a second slider 36 slidably connected to the second slide rails 35, the second slide rails 35 are fixedly mounted on the substrate, the lower platen 33 is fixed on the second slider 36, the second slider 36 is connected with a transverse pushing cylinder 38 for driving the second slider 36 to move, and the lower platen 33 can be driven to move along the transverse pressurizing direction when the transverse pushing cylinder 38 drives the second slider 36 to move, so that the lower platen 33 can move outside the support column 23, thereby facilitating feeding and taking of the battery cells.

Referring to fig. 5, in the present embodiment, the supporting member adopts the spacer 34, the spacer 34 is disposed on the substrate, and the spacer 34 is located between the two second slide rails 35, so that the spacer 34 supports the lower platen 33 from the bottom of the lower platen 33, thereby improving reliability.

Referring to fig. 6, in the present embodiment, the lower platen 33 is movably disposed on the substrate along the pressing direction by a floating assembly, and the floating assembly provides a second supporting force for the lower platen 33 so that a movable gap is formed between the lower platen 33 and the cushion block 34 in the non-pressing state, specifically, the floating assembly includes an elastic structure 37, and the elastic structure 37 is connected between the lower platen 33 and the second slider 36. In the pressurized state, the elastic structure 37 is in a compressed state; in the non-pressurized state, the restoring elastic force of the elastic structure 37 forms a second supporting force to push the lower pressing plate 33 to move upwards, so that a movable gap is formed between the lower pressing plate 33 and the cushion block 34. Specifically, the elastic structure 37 includes a base plate 371 fixedly connected to the bottom of the lower pressure plate 33, a connecting plate 372 fixedly connected to the slider, and a compression spring 374 connected therebetween, a spring fixing seat 373 is fixedly connected to the connecting plate 372, a receiving groove is provided on the base plate 371, the bottom of the compression spring 374 is fixedly connected to the spring fixing seat 373, and the top of the compression spring 374 is fixedly connected to the inner top of the receiving groove. With the arrangement, when the lower pressing plate 33 moves downwards, the bottom plate 371 is abutted with the cushion block 34, at this time, a gap is reserved between the bottom plate 371 and the connecting plate 372, and when the lower pressing plate 33 moves downwards under the force, the lower pressing plate 33 is abutted with the cushion block 34, so that the second sliding block 36 and the second sliding rail 35 are not stressed, and the protection effect of the sliding rail mechanism is realized; meanwhile, when the lower pressure plate 33 moves downwards, the compression spring 374 is in a compressed state, and when the compression spring 374 returns to the elastic force, the lower pressure plate 33 is pushed to move upwards, a gap is formed between the bottom plate 371 and the cushion block 34, so that the second sliding block 36 drives the lower pressure plate 33 to slide smoothly back and forth.

Referring to fig. 7, in the present embodiment, the gravity counteracting assembly 4 has a plurality of bottoms connected to the support plate 31, and the gravity counteracting assembly 4 is used to lift the support plate 31, so as to counteract the gravity of the support plate 31 and the structure connected to the support plate 31 during the pressurization process, and achieve uniform pressurization of each layer of cells. The gravity cancellation assembly 4 comprises a plurality of jacking cylinders 41 evenly distributed around the periphery of the support plate 31. Specifically, the jacking cylinders 41 have two, two jacking cylinders 41 are diagonally arranged based on the support plate 31, and the jacking cylinders 41 are arranged at corners of the support plate 31, so that the jacking cylinders 41 avoid the path along which the lower pressure plate 33 moves, and the stability of lifting the support plate 31 can be improved.

Referring to fig. 1, 2 and 7, in this embodiment, the multi-layer cell pressurizing device further includes three test assemblies 5, where the test assemblies 5 are respectively and fixedly installed on one of the support plates 31 in the pressing plate assembly 3, so as to perform a short circuit test on the cells of each layer of cell pressurizing station, the test assemblies 5 include a test cylinder, a pressure head and a short circuit tester (not shown), in the pressurizing process of the cells, the test cylinder stretches to drive the pressure head to move downward and compress the cell lugs, and the pressure head contacts with the cell lugs to conduct the short circuit tester, so as to test whether the cells are shorted.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. The utility model provides a mobilizable electric core pressure device of holding down plate, includes along the pressure direction movably setting up the clamp plate subassembly in electric core pressure device's frame, the clamp plate subassembly includes base plate and holding down plate, the base plate upper surface is equipped with a slide rail mechanism, the holding down plate sets up on slide rail mechanism, the holding down plate can follow horizontal pressure direction through slide rail mechanism and remove, its characterized in that, there is the interval between holding down plate and the base plate upper surface, the base plate upper surface has the pressure position, the pressure position is provided with support piece, support piece provides the first holding power of a counter-pressure for the holding down plate under the pressurized state.

2. The movable die pressing device of claim 1, wherein the lower pressing plate is movably disposed on the substrate along the pressing direction by a floating assembly, and the floating assembly provides a second supporting force for the lower pressing plate so that the lower pressing plate forms a movable gap with the supporting member in the non-pressing state.

3. The movable die pressing device of claim 2, wherein the floating assembly includes a resilient structure that provides a second supporting force to the lower platen such that the lower platen forms a movable gap with the support member in the non-pressurized state.

4. The movable die pressing device of claim 3, wherein the slide rail mechanism comprises a second slide rail and a second slider slidingly connected to the second slide rail along the lateral pressing direction, and the elastic structure is connected between the lower pressing plate and the second slider.

5. The movable cell pressurizing device of claim 1, wherein the frame comprises a support column, a first slide rail and a first slide block slidingly connected to the first slide rail along the pressurizing direction are arranged on the support column, and the pressure plate assembly is connected with the first slide block.

6. The movable cell pressing device of any one of claims 1 to 5, wherein a plurality of pressing plate assemblies are arranged along the pressing direction, and a gravity counteracting assembly is arranged between adjacent pressing plate assemblies, and the gravity counteracting assembly can provide support for the pressing plate assemblies in the antigravity direction.

7. The movable die pressing device of claim 6, wherein the gravity cancellation assembly comprises a plurality of jacking cylinders uniformly distributed around the periphery of the pressing plate assembly.

8. The movable cell pressurizing device of any one of claims 1 to 5, wherein a test assembly is disposed on a feeding side of the pressure plate assembly, and is used for connecting or disconnecting a test circuit between a cell to be tested and an external short circuit tester.

9. The movable die pressing device of any one of claims 1 to 5, wherein a pressing power assembly is disposed above the pressing plate assembly, and the pressing power assembly provides pressure to drive the pressing plate assembly to move along the pressing direction.

10. The movable die pressing apparatus of claim 9, wherein the pressing power assembly includes a servo motor and a push rod, the servo motor driving the push rod to move in a pressing direction/counter-pressing direction by a ball screw.