CN216826996U

CN216826996U - Slurry transmission device for lithium battery and lithium battery slurry coating system

Info

Publication number: CN216826996U
Application number: CN202123211210.XU
Authority: CN
Inventors: 黄志军; 刘其才; 王会娜
Original assignee: Wuhan Zhongxing Innovation Material Technology Co ltd
Current assignee: Wuhan Zhongxing Innovation Material Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-28
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a thick liquids transmission device and lithium cell thick liquids coating system for lithium cell, thick liquids transmission device for lithium cell includes buffer memory jar, feed back pipe and inlet pipe, and the buffer memory jar is used for storing thick liquids, and the inlet pipe is used for transmitting thick liquids to the assigned position, and the feed back pipe is used for the thick liquids backward flow, feed back pipe and inlet pipe intercommunication, and the feed back pipe one-way switches on. Because the feed back pipe is direct with the inlet pipe intercommunication for the circulation path of thick liquids is short, and the thick liquids is short with the time of air contact, thereby reduces the production of bubble in the thick liquids, improves the product quality.

Description

Slurry transmission device for lithium battery and lithium battery slurry coating system

Technical Field

The application relates to the technical field of lithium battery production, in particular to a lithium battery slurry transmission device and a lithium battery slurry coating system.

Background

The slurry conveying system in the diaphragm coating industry generally comprises a buffer tank, a feeding pump, a feeding pipe, a material return pipe, a filtering device and the like, and is mainly used for supplying slurry to a coating system, and then the coating system uniformly and stably coats the slurry on a membrane material, wherein the material return pipe is connected to the buffer tank through the coating system, the material return circulation path is long, the slurry is in contact with air for a long time, and the slurry is easy to generate a large amount of bubbles in the whole circulation process to influence the product quality.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a lithium battery slurry transmission device and a lithium battery slurry coating system.

According to a first aspect of the application, an embodiment provides a lithium battery slurry transfer device, including:

the buffer tank is used for storing slurry;

a feed pipe for transporting the slurry in the buffer tank to a designated location;

the feed back pipe is used for slurry backflow;

the feed back pipe is communicated with the feed pipe and is communicated in a one-way mode.

In one embodiment, a check valve is arranged on the material return pipe.

In an embodiment, a feeding pump is arranged on the feeding pipe, and the feeding pump is arranged between the cache tank and the connection of the feed back pipe and the feeding pipe.

In one embodiment, the feeding pipe is provided with a filtering device, and the filtering device is arranged between the feeding pump and the buffer tank.

According to a second aspect of the present application, an embodiment provides a lithium battery slurry coating system, which includes a slurry conveying device for a lithium battery and a coating device, wherein the coating device is connected with the feeding pipe and the return pipe.

According to the slurry transmission device for the lithium battery and the slurry coating system for the lithium battery, the feed back pipe is directly communicated with the feed pipe, so that the circulation path of the slurry is short, the time for the slurry to contact with air is short, the generation of bubbles in the slurry is reduced, and the product quality is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art lithium battery slurry coating system;

fig. 2 is a schematic structural diagram of a lithium battery slurry coating system in an embodiment.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily refer to a required composition and/or order.

The ordinal numbers used herein for the components, such as "first," "second," etc., are used merely to distinguish between the objects described, and do not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.

As shown in fig. 1, a lithium battery slurry coating system in the prior art includes a buffer tank 1, a feed pipe 2, a return pipe 3, a feed pump 4, a filter device 5 and a coating device 6, wherein the feed pipe 2 connects the buffer tank 1 and the coating device 6 for feeding the coating device 6, the return pipe 3 connects the coating device 6 and the buffer tank 1 for returning the excess slurry in the coating device 6 to the buffer tank 1, such a return circulation path is long, the contact time of the slurry with air is long, and the slurry is liable to generate a large amount of bubbles in the whole circulation process, which affects the product quality, therefore, the inventor proposes a novel lithium battery slurry coating system, which communicates the return pipe with the feed pipe, and simultaneously ensures the return pipe to be in one-way communication, so that the slurry is directly returned to the feed pipe, the length of the return circulation path and the contact time of the slurry with air are greatly shortened, thereby reducing the generation of bubbles in the slurry, the product quality is improved.

The present application is illustrated by the following specific examples.

The first embodiment is as follows:

as shown in fig. 2, an embodiment of the present application provides a lithium battery slurry coating system, which includes a slurry delivery device for a lithium battery and a coating device 6. Slurry transmission device for lithium cell includes buffer tank 1, inlet pipe 2 and feed back pipe 3. The buffer tank 1 is used for storing slurry. The feed pipe 2 connects the buffer tank 1 with the coating device 6, and is used for conveying the slurry in the buffer tank 1 to the coating device 6. The feed back pipe 3 is used for backflow of excess slurry in the coating device 6, in this embodiment, the feed back pipe 3 connects the coating device 6 and the feed pipe 2, that is, the slurry directly flows back into the feed pipe 2, the length of the feed back circulation path and the time of contact between the slurry and air are shortened, and meanwhile, in order to avoid the slurry from entering the coating device from the feed back pipe 3, the feed back pipe 3 is in one-way conduction from the coating device 6 to the feed pipe 2.

One-way conduction of feed back pipe 3 can be realized through multiple mode, such as check valve, check valve etc. in this embodiment, be equipped with check valve 31 on feed back pipe 3, check valve 31 is 6 to the one-way circulation of inlet pipe 2 direction of coating unit, avoids thick liquids to get into coating unit 6 by feed back pipe 3, and the mounted position of check valve 31 should be close to the junction of feed back pipe 3 and inlet pipe 2, avoids causing thick liquids to block up in the thick liquids gushes into feed back pipe 3 body because of the thick liquids among the inlet pipe 2.

In this embodiment, be equipped with feed pump 4 on inlet pipe 2, feed pump 4 is used for pumping thick liquids into coating unit 6, in this embodiment, feed pump 4 is located between buffer tank 1 and the junction of feed back pipe 3 and inlet pipe 2, so set up compare in locate coating unit 6 with buffer tank 1 and feed back pipe 3 and inlet pipe 2 the junction between benefit of feed pump 4 be from the feed back pipe 3 in the thick liquids that flow back to in the inlet pipe 2 also can receive great pump pressure, the circulation efficiency is improved, further shorten thick liquids and air contact time.

In this embodiment, be equipped with filter equipment 5 on inlet pipe 2, filter equipment 5 is arranged in getting rid of bubble and impurity in the thick liquids, and in this embodiment, filter equipment 5 is located between buffer tank 1 and the feed pump 4, so set up and avoided the thick liquids that have impurity to get into feed pump 4, and then reduced the risk that impurity leads to feed pump 4 to break down, improved the job stabilization nature of system.

According to the lithium battery slurry coating system in the embodiment, the feed back pipe is directly communicated with the feed pipe, so that the circulation path of the slurry is short, the contact time of the slurry and air is short, the generation of bubbles in the slurry is reduced, and the product quality is improved. Meanwhile, the working characteristics of the lithium battery slurry coating system are fully considered due to the arrangement positions of the one-way valve, the feeding pump and the filtering device, so that the working efficiency of the system is improved, and the working stability of the system is also improved.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical personnel in the technical field of the utility model, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replace.

Claims

1. A slurry conveying device for a lithium battery is characterized by comprising:

the buffer tank is used for storing slurry;

the feed back pipe is used for slurry backflow;

2. The slurry transport device for lithium batteries according to claim 1, wherein a check valve is provided on the return pipe.

3. The slurry transport device for lithium batteries according to claim 1, wherein a feed pump is provided on the feed pipe, and the feed pump is provided between the buffer tank and a junction of the feed pipe and the feed pipe.

4. The slurry transport device for lithium battery as claimed in claim 3, wherein a filtering device is provided on the feeding pipe, the filtering device being provided between the feeding pump and the buffer tank.

5. A lithium battery slurry coating system, characterized by comprising the slurry conveying device for the lithium battery and the coating device according to any one of claims 1 to 4, wherein the coating device is connected with the feeding pipe and the return pipe.