CN217009296U

CN217009296U - Lithium ion battery electrolyte soaks device

Info

Publication number: CN217009296U
Application number: CN202220542491.2U
Authority: CN
Inventors: 李峥; 冯玉川; 李哲; 陈凯; 何泓材
Original assignee: Suzhou Qingtao New Energy S&T Co Ltd
Current assignee: Suzhou Qingtao New Energy S&T Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-19
Anticipated expiration: 2032-03-14

Abstract

The utility model belongs to the technical field of lithium ion battery preparation, and discloses a lithium ion battery electrolyte infiltration device which comprises a support, a connecting piece and a driving unit. The support has the baffle of two relative settings, arranges between the baffle to be provided with a plurality of mobilizable splint, splint and baffle parallel arrangement, and electric core can be placed between two adjacent splint. The connecting piece connects a plurality of clamping plates and the baffle plates in series along the arrangement direction of the clamping plates. Drive unit includes drive shaft and driving piece, wears to be equipped with the drive shaft on at least one baffle, and the one end and the driving piece of drive shaft are connected, and the other end of drive shaft supports splint, and the drive shaft can promote splint in order to reduce the interval between the adjacent splint under the drive of driving piece. The device can effectively shorten the soaking time, is beneficial to complete soaking of the electrolyte, and therefore the product quality is obviously improved.

Description

Lithium ion battery electrolyte infiltration device

Technical Field

The utility model relates to the technical field of lithium ion battery preparation, in particular to a lithium ion battery electrolyte soaking device.

Background

The electrolyte of the lithium ion battery is a carrier for ion transmission in the battery, plays a role in conducting ions between the positive electrode and the negative electrode of the lithium ion battery, and is a guarantee for the lithium ion battery to obtain the advantages of high voltage, high specific energy and the like. Electrolyte infiltration is the diffusion process of electrolyte inside naked electric core after the completion of electric core notes liquid, and under certain temperature and stationary time, in the space of pole piece and diaphragm can slowly be filled to electrolyte, whether electrolyte infiltration has very big influence to the internal resistance of electric core, ion conductivity completely. The electrolyte is fully soaked, so that a better interface can be formed in the pre-charging stage, and the safety, the energy storage performance and the like of the battery cell can be improved. The electrolyte is not fully soaked, so that the danger of thermal runaway and the like of the battery in the use process is easily caused. Therefore, how to infiltrate the electrolyte is a problem to be solved in the industry.

In the prior art, a common soaking mode is to horizontally or obliquely stand a battery cell, the battery cell is slowly soaked and consumes a long time, the middle part of the battery cell cannot be completely soaked, and the battery cell is difficult to ensure to have good electrical property and safety performance.

Therefore, it is desirable to provide an apparatus for infiltrating an electrolyte into a lithium ion battery to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lithium ion battery electrolyte infiltration device which can effectively shorten infiltration time and is beneficial to complete infiltration of electrolyte, so that the product quality is obviously improved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a lithium ion battery electrolyte infiltration device, comprising:

the battery cell support comprises a support, wherein the support is provided with two oppositely arranged baffles, a plurality of movable clamping plates are arranged between the baffles, the clamping plates and the baffles are arranged in parallel, and a battery cell can be placed between two adjacent clamping plates;

the connecting piece is used for connecting the plurality of clamping plates and the baffles in series along the arrangement direction of the clamping plates;

drive unit, drive unit includes drive shaft and driving piece, at least one wear to be equipped with on the baffle the drive shaft, the one end of drive shaft with the driving piece is connected, the other end of drive shaft supports splint, the drive shaft can be in the driving piece drive pushes down splint in order to reduce adjacently the interval between the splint.

Optionally, a threaded hole is formed in the baffle, an external thread is formed in the driving shaft, the driving shaft is in threaded connection with the baffle, and the driving piece drives the driving shaft to rotate, so that the distance between the adjacent clamping plates is reduced.

Optionally, a fixing block is arranged on the baffle, the threaded hole is formed in the fixing block, and the fixing block is in threaded connection with the driving shaft.

Optionally, the driving piece is a hand wheel, and the hand wheel can drive the driving shaft to rotate so as to adjust the distance between the clamping plates.

Optionally, the driving unit is an air cylinder, the driving shaft is an output end of the air cylinder, and the air cylinder can control the output end to push the clamping plates to reduce the distance between the adjacent clamping plates.

Optionally, the connecting piece is the guide arm, splint include the splint main part and connect in the installation department of splint main part, the installation department with the splint main part is at the coplanar, the guide arm is worn to locate the installation department.

Optionally, the clamp plate main body is square, the number of the mounting parts is even, and the mounting parts are arranged in central symmetry around the center of the baffle plate main body.

Optionally, the connecting members are hinges, and the two adjacent clamping plates and the baffle and the adjacent clamping plates are connected through the hinges.

Optionally, the support further includes a bottom plate, and the baffle is perpendicular to the bottom plate.

Optionally, the device further comprises a containing box, and the support is arranged inside the containing box.

Has the advantages that:

according to the lithium ion battery electrolyte infiltration device provided by the utility model, the plurality of movable clamping plates are arranged between the two baffles on the support, the battery cell is placed between the clamping plates, when the driving shaft baffles push the clamping plates, the distance between the clamping plates is reduced, and the battery cell is extruded, so that complete infiltration of electrolyte is facilitated. The baffle and the clamping plate are connected in series, so that the clamping plate can only move in the arrangement direction, and the clamping plate is prevented from shifting and affecting the infiltration effect of the electrolyte. The device can effectively improve the electrolyte infiltration efficiency, shorten the production preparation period of the battery, and simultaneously improve the quality of the battery core.

Drawings

FIG. 1 is an exploded view of an electrolyte infiltration apparatus for a lithium ion battery according to the present invention;

fig. 2 is an assembly diagram of the lithium ion battery electrolyte infiltration device provided by the utility model.

In the figure:

100. accommodating the box; 200. a support; 210. a baffle plate; 220. a base plate; 300. a splint; 310. a splint main body; 320. an installation part; 400. a guide bar; 500. a hand wheel; 600. a drive shaft; 700. and fixing blocks.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.

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 the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Referring to fig. 1, the lithium ion battery electrolyte infiltration apparatus provided in this embodiment includes a support 200, a connecting member, and a driving unit. The support 200 is provided with two oppositely arranged baffles 210, a plurality of movable clamping plates 300 are arranged between the baffles 210, the clamping plates 300 are arranged in parallel with the baffles 210, and the battery cells can be placed between two adjacent clamping plates 300. The connector connects a plurality of clamping plates 300 and the baffle plates 210 in series along the arrangement direction of the clamping plates 300. The drive unit includes drive shaft 600 and driving piece, wears to be equipped with drive shaft 600 on at least one baffle 210, and the one end and the driving piece of drive shaft 600 are connected, and the other end of drive shaft 600 supports splint 300, and drive shaft 600 can push splint 300 under the drive of driving piece in order to reduce the interval between the adjacent splint 300.

The electrolyte infiltration device provided by this embodiment sets up a plurality of splint 300 between two baffles 210 on support 200, and splint 300 and baffle 210 parallel arrangement have formed the accommodation space of electric core between two adjacent splint 300. The clamping plates 300 can move between the baffle plates 210, when the driving shaft 600 pushes the clamping plates 300 under the action of the driving piece, the distance between the clamping plates 300 is reduced, and the clamping plates 300 extrude the battery core, so that the electrolyte in the battery core is completely soaked. Adopt the connecting piece to connect splint 300 and baffle 210, can carry on spacingly in Y direction and Z direction to splint 300, restriction splint 300 can only remove along the X direction, prevents that splint 300 from taking place the offset under the effect of the extrusion force of drive shaft 600, influences the infiltration effect.

Further, the stand 200 further includes a bottom plate 220. The baffle 210 and the base plate 220 are vertically disposed. The bottom plate 220 serves as a support for the clamping plate 300. Optionally, a lubricating treatment is applied to the surface of the bottom plate 220 to prevent excessive friction between the bottom edge of the cleat 300 and the bottom plate 220 from affecting the movement of the cleat 300. The baffle 210 and the bottom plate 220 may be integrally formed, or may be fixedly connected by welding, riveting, bonding, or the like.

Referring to fig. 1 and 2, further, a threaded hole is formed in the baffle 210, an external thread is formed on the driving shaft 600, and the driving shaft 600 is in threaded connection with the baffle 210. When the driving shaft 600 is driven by the driving part and screwed into the direction of the clamping plate 300, the distance between the adjacent clamping plates 300 is reduced, and the battery cell is extruded, so that the electrolyte is completely soaked. When drive shaft 600 is under the drive of driving piece, when the direction that keeps away from splint 300 was back-out, the interval grow between splint 300 can carry out getting of electric core and put.

Further, a fixing block 700 is disposed on the baffle plate 210, the threaded hole is disposed on the fixing block 700, and the fixing block 700 is threadedly coupled to the driving shaft 600. Optionally, the fixing block 700 has a certain thickness, thereby increasing the length of the screw connection, making the connection more stable, and preventing the driving shaft 600 from shaking. The fixing block 700 and the threaded hole may be disposed at the center of the baffle 210, so as to ensure that the stress point of the clamping plate 300 is at the center of the clamping plate 300, and thus the electric core is uniformly stressed. The fixing block 700 may be fixed to the barrier 210 by welding, riveting, or bonding.

Further, the drive member is a handwheel 500. The handwheel 500 may be fixedly attached to the drive shaft 600 by welding, threading, or adhesive. The handwheel 500 is rotated to drive the driving shaft 600 to rotate, so that the distance between the clamping plates 300 can be adjusted. In other embodiments, the handwheel 500 may be replaced by a motor or other driving member, and it is within the scope of the present application to provide a driving member capable of driving the driving shaft 600 to rotate.

Further, the driving unit may also be an air cylinder, and the driving shaft 600 is an output end of the air cylinder, and the air cylinder can control the output end to push the clamping plates 300 to reduce the space between the adjacent clamping plates 300. Of course, the driving unit may be other components capable of pressing or pushing the clamping plates 300, and any component capable of adjusting the distance between the clamping plates 300 is within the scope of the present application.

Further, the connecting member may be a guide rod 400, the clamping plate 300 includes a clamping plate main body 310 and an installation portion 320 connected to the clamping plate main body 310, the installation portion 320 and the clamping plate main body 310 are disposed in the same plane, an installation hole is disposed on the installation portion 320, and the guide rod 400 is inserted into the installation portion 320. The guide rod 400 is adopted to connect the baffle and the clamping plate in series, the component structure is simple, the assembly is convenient, and the guide rod 400 can play a role in guiding the movement of the clamping plate 300.

In this embodiment, the mounting portion 320 may be an extension plate located around the clamping plate 300. Optionally, the clamping plate main body 310 is designed to be square according to the shape of the battery cell, and the number of the mounting holes is even, and understandably, the mounting holes are arranged in central symmetry according to the center of the clamping plate main body 310, so that the battery cell can be uniformly stressed, and the problem of incomplete infiltration locally is prevented. In the present embodiment, four mounting portions 320 are provided, which are respectively located at four corners of the cleat body 310, and the four mounting portions 320 all extend in the Y-axis direction. In other embodiments, the number of the mounting portions 320 may be two or six or other numbers, and may be set as needed. Of course, the shape of the baffle 210 should be designed according to the shape of the splint 300. The sizes of the body of the baffle 210 and the body of the clamping plate 310 are set according to the shape of the battery cell, so that the battery cell can be completely pressed.

Further, the guide rod 400 penetrating the clamping plate 300 and the baffle 210 may be a screw, the mounting hole on the clamping plate 300 is provided with an internal thread, the guide rod 400 is connected with a motor, and the motor can drive the guide rod 400 to rotate so as to adjust the distance between the clamping plates 300. By providing the guide rod 400 as a screw, it is possible to provide support and positioning for the clamping plate 300, and at the same time, it is possible to adjust the distance between the clamping plates 300 by means of the screw connection, so that the clamping plates 300 are uniformly stressed.

Further, the connecting members may be hinges, and the adjacent two clamping plates 300 and the baffle 210 and the adjacent clamping plates 300 are connected by the hinges. In other implementations, the baffle 210 and the splint 300 adjacent to the baffle 210 may also be fixedly connected, but not movably connected to the splint 300 adjacent to the baffle 210, and the specific connection mode may be set as required, which is not described herein again. Of course, the form of the connecting member is not limited to the guide rod 400 and the hinge, and any structure capable of connecting the clamp plate 300 and the barrier plates 210 and allowing the clamp plate 300 to move between the barrier plates 210 is within the scope of the present application.

Further, the battery electrolyte infiltration apparatus further includes a housing box 100, and the support 200 is disposed inside the housing box 100. The accommodation box 100 includes a box body and a box cover fastened to the box body and movably connected to the box body, so that the box body can be conveniently opened or closed to put in or take out the supporter 200. Alternatively, a through hole is provided in the accommodation box 100, and the driving shaft 600 passes through the accommodation box 100 to be connected to a driving member outside the accommodation box 100. The material of the container 100 may be common plastic or stainless steel. The container 100 may be a device that can provide a temperature, vacuum environment, such as a vacuum oven, to further improve the infiltration efficiency.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a lithium ion battery electrolyte soaks device which characterized in that includes:

the battery cell support comprises a support (200), wherein the support (200) is provided with two oppositely arranged baffles (210), a plurality of movable clamping plates (300) are arranged between the baffles (210), the clamping plates (300) are arranged in parallel with the baffles (210), and a battery cell can be placed between two adjacent clamping plates (300);

a connector connecting a plurality of the clamping plates (300) and the baffle plates (210) in series along the arrangement direction of the clamping plates (300);

the driving unit comprises a driving shaft (600) and a driving piece, the driving shaft (600) penetrates through the baffle (210), one end of the driving shaft (600) is connected with the driving piece, the other end of the driving shaft (600) is abutted to the clamping plate (300), and the driving shaft (600) can push the clamping plate (300) to reduce the distance between the adjacent clamping plates (300) under the driving of the driving piece.

2. The lithium ion battery electrolyte infiltration device according to claim 1, wherein the baffle plate (210) is provided with a threaded hole, the driving shaft (600) is provided with an external thread, the driving shaft (600) is in threaded connection with the baffle plate (210), and the driving member drives the driving shaft (600) to rotate so as to reduce the distance between the adjacent clamping plates (300).

3. The lithium ion battery electrolyte infiltration device according to claim 2, wherein a fixing block (700) is arranged on the baffle plate (210), the threaded hole is arranged on the fixing block (700), and the fixing block (700) is in threaded connection with the driving shaft (600).

4. The lithium ion battery electrolyte infiltration device according to any one of claims 1-3, characterized in that the driving member is a handwheel (500), and the handwheel (500) can drive the driving shaft (600) to rotate so as to adjust the distance between the clamping plates (300).

5. The li-ion battery electrolyte infiltration apparatus of claim 1, wherein the driving unit is a cylinder, and the driving shaft (600) is an output end of the cylinder, and the cylinder can control the output end to push the clamping plates (300) to reduce a distance between adjacent clamping plates (300).

6. The lithium ion battery electrolyte infiltration device of claim 1, wherein the connecting member is a guide rod (400), the clamping plate (300) comprises a clamping plate main body (310) and an installation part (320) connected to the clamping plate main body (310), the installation part (320) and the clamping plate main body (310) are in the same plane, and the guide rod (400) is arranged in the installation part (320) in a penetrating manner.

7. The lithium ion battery electrolyte infiltration device according to claim 6, wherein the clamp plate main body (310) is square, the number of the installation parts (320) is even, and the installation parts (320) are arranged in a central symmetry manner with respect to the center of the clamp plate main body (310).

8. The li-ion battery electrolyte infiltration apparatus of claim 1, wherein the connectors are hinges, and the two adjacent clamping plates (300) and the baffle (210) and the adjacent clamping plates (300) are connected by the hinges.

9. The li-ion battery electrolyte infiltration apparatus of claim 1, wherein the support (200) further comprises a bottom plate (220), and the baffle (210) is disposed perpendicular to the bottom plate (220).

10. The lithium ion battery electrolyte infiltration apparatus of claim 1, further comprising a containment box (100), wherein the support (200) is disposed inside the containment box (100).