阅读说明：本技术 一种具有压力补偿装置的涂布系统及其使用方法 (Coating system with pressure compensation device and application method thereof ) 是由 洪远铭 王润发 纪荣进 杨山 郑明清 陈杰 李载波 王威 于 2019-09-09 设计创作，主要内容包括：本发明属于电池技术领域,具体涉及一种具有压力补偿装置的涂布系统,包括供料管、回流阀、涂布阀、压力补偿装置和膜头,供料管、回流阀、涂布阀、压力补偿装置、膜头依次通过管道连通,压力补偿装置包括驱动装置、连杆、挡板、容器罐、传感装置和控制装置,挡板容置于容器罐的腔体中,挡板与容器罐的内壁过盈配合,挡板通过连杆与驱动装置的输出端连接,传感装置容置于膜头的内部,容器罐与膜头通过管道连通,驱动装置、传感装置均与控制装置电连接。该涂布系统避免了成品电芯存在析锂风险,避免了重大的安全隐患,同时改善了生产优率低,调机时间长等缺点。此外,还提供了一种该涂布系统的使用方法,以提高其工作的稳定性和效率。(the invention belongs to the technical field of batteries, and particularly relates to a coating system with a pressure compensation device, which comprises a feeding pipe, a reflux valve, a coating valve, the pressure compensation device and a membrane head, wherein the feeding pipe, the reflux valve, the coating valve, the pressure compensation device and the membrane head are sequentially communicated through a pipeline, the pressure compensation device comprises a driving device, a connecting rod, a baffle plate, a container tank, a sensing device and a control device, the baffle plate is accommodated in a cavity of the container tank, the baffle plate is in interference fit with the inner wall of the container tank, the baffle plate is connected with the output end of the driving device through the connecting rod, the sensing device is accommodated in the membrane head, the container tank is communicated with the membrane head through the pipeline, and the driving device and the sensing device are electrically connected with. The coating system avoids the risk of lithium precipitation of finished product battery cores, avoids great potential safety hazards, and overcomes the defects of low production yield, long machine adjusting time and the like. In addition, a method for using the coating system is also provided, so that the working stability and efficiency of the coating system are improved.)

1. a coating system having a pressure compensation device, characterized by: the coating device comprises a feeding pipe (1), a reflux valve (2), a coating valve (3), a pressure compensation device (4) and a membrane head (5), wherein the feeding pipe (1), the reflux valve (2), the coating valve (3), the pressure compensation device (4) and the membrane head (5) are sequentially communicated through a pipeline, the pressure compensation device (4) comprises a driving device (41), a connecting rod (42), a baffle (43), a container tank (44), a sensing device (45) and a control device (46), the baffle (43) is accommodated in a cavity of the container tank (44), the baffle (43) is in interference fit with the inner wall of the container tank (44), the baffle (43) is connected with the output end of the driving device (41) through the connecting rod (42), the sensing device (45) is accommodated in the membrane head (5), the container tank (44) is communicated with the membrane head (5) through a pipeline, the driving device (41) and the sensing device (45) are electrically connected with the control device (46).

2. a coating system with pressure compensation apparatus as set forth in claim 1, wherein: the baffle (43) is of an elastic structure.

3. A coating system with pressure compensation apparatus as set forth in claim 2, wherein: the baffle (43) is a rubber plate.

4. A coating system with pressure compensation apparatus as set forth in claim 1, wherein: the driving device (41) is a telescopic mechanism.

5. The coating system with pressure compensation device of claim 4, wherein: the driving device (41) is an air cylinder or a hydraulic cylinder.

6. a coating system with pressure compensation apparatus as set forth in claim 1, wherein: and a diaphragm valve (6) is connected in series on a return pipeline of the return valve (2).

7. A coating system with pressure compensation apparatus as set forth in claim 1, wherein: still include steel roller (7), the output of membrane head (5) with steel roller (7) correspond.

8. A coating system with pressure compensation apparatus as set forth in claim 1, wherein: the control device (46) is a single chip microcomputer or a PLC.

9. A coating system with pressure compensation apparatus as set forth in claim 1, wherein: the sensing device (45) is a pressure sensor.

10. a method of using a coating system having a pressure compensating device, comprising the steps of:

The sensing device (45) detects the pressure of the slurry in the membrane head (5) in real time and transmits the information to the control device (46) in real time;

The control device (46) performs real-time calculation processing on the pressure information and controls the working state of the driving device (41) according to the calculation result;

the reflux valve (2) is closed, the coating valve (3) is opened, and the film head (5) is coated;

The reflux valve (2) is opened, the coating valve (3) is closed, and the coating of the film head (5) is stopped;

The coating gap can appear when the membrane head (5) coats different membrane lengths, the pressure of slurry in the membrane head (5) can be increased in the coating gap, at the moment, the control device (46) controls the driving device (41) to start to work, the driving device (41) drives the baffle (43) to move through the connecting rod (42), redundant slurry is pumped into the container tank (44), the slurry in the container tank (44) is slowly input into the membrane head (5) during coating, the pressure of the slurry in the membrane head (5) is kept stable, and the thicknesses of different membrane lengths coated by the membrane head (5) are uniform.

Technical Field

The invention belongs to the technical field of batteries, and particularly relates to a coating system with a pressure compensation device and a using method thereof.

Background

in the production process of the polymer lithium ion cell, the conventional mobile phone battery pole piece structure cannot meet the requirement of quick charging, the novel cell pole piece structure has a double-gap double-film long structure, the pole lugs are positioned in the middle of the pole pieces, electrons can be transmitted to the two sides of the pole pieces simultaneously in the charging process, the transmission efficiency is high, the polarization is small, the impedance is small, the charging speed is obviously improved, the charging temperature is reduced, the 3C-2C quick charging of the mobile phone is realized, the charging time is shortened, and the preference of consumers is deeply met.

Disclosure of Invention

One of the objects of the present invention is: aiming at the defects of the prior art, the coating system with the pressure compensation device is provided, the pressure compensation device controls the reflux pressure of the large coating gap and the small coating gap, the head thickness with different membrane lengths reaches the specification range, the lithium precipitation risk of a finished product battery cell is avoided, the great potential safety hazard is avoided, and the defects of low production yield, long machine adjusting time and the like are improved.

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

A coating system with a pressure compensation device comprises a feeding pipe, a reflux valve, a coating valve, the pressure compensation device and a membrane head, wherein the feeding pipe, the reflux valve, the coating valve, the pressure compensation device and the membrane head are sequentially communicated through a pipeline, the pressure compensation device comprises a driving device, a connecting rod, a baffle, a container tank, a sensing device and a control device, the baffle is contained in a cavity of the container tank and is in interference fit with the inner wall of the container tank, the baffle is connected with the output end of the driving device through the connecting rod, the sensing device is contained in the membrane head, the container tank is communicated with the membrane head through the pipeline, and the driving device and the sensing device are electrically connected with the control device. In operation, the sensing device detects the pressure of the slurry in the membrane head in real time and transmits the information to the control device in real time; the control device carries out real-time operation processing on the pressure information and controls the working state of the driving device according to the operation result; closing the reflux valve, opening the coating valve and coating by the film head; opening the reflux valve, closing the coating valve and stopping coating the film head; the coating clearance can appear when the membrane head coats different membrane lengths, at the coating clearance, thick liquids pressure in the membrane head can increase, controlling means control drive arrangement starts work this moment, drive arrangement passes through the connecting rod and drives the baffle motion, with unnecessary thick liquids suction in the holding vessel, make the thick liquids in the holding vessel input the membrane head slowly again when the coating, make thick liquids pressure in the membrane head maintain stably, the different membrane length thickness of membrane head coating is even, this coating system adopts pressure compensation arrangement to control coating big clearance and little clearance reflux pressure, make the head thickness of different membrane lengths reach specification range, avoid the finished product electricity core to have the lithium risk of educing, great potential safety hazard has been avoided, it is low to have improved the production goodness simultaneously, shortcomings such as the time of transferring the quick-witted is long.

As an improvement of the coating system with pressure compensation according to the invention, the baffle is of a resilient construction. The structure design is beneficial to realizing interference fit between the baffle and the inner wall of the container tank, thereby ensuring the sealing property and preventing slurry leakage.

As an improvement of the coating system with pressure compensation device according to the invention, the baffle is a rubber plate. The structure design is beneficial to realizing interference fit between the baffle and the inner wall of the container tank, thereby ensuring the sealing property and preventing slurry leakage.

As an improvement of the coating system with pressure compensation device according to the present invention, the driving device is a telescopic mechanism. The structure design is beneficial to realizing the suction or the supply of the slurry in the membrane head.

as an improvement of the coating system with the pressure compensation device according to the invention, the drive device is a pneumatic or hydraulic cylinder. Besides, the driving device can be other devices capable of achieving the same effect, and can be flexibly arranged according to actual conditions.

As an improvement of the coating system with the pressure compensation device, a diaphragm valve is connected in series on a return pipeline of the return valve. The structural design is beneficial to controlling the working state of the return valve so as to increase the stability of the coating work of the film head.

The coating system with the pressure compensation device further comprises a steel roller, and the output end of the film head corresponds to the steel roller. In operation, the steel roller rotates continuously, and the film head performs coating operation discontinuously, thereby realizing coating of films with different lengths.

As an improvement of the coating system with the pressure compensation device, the control device is a single chip microcomputer or a PLC. Besides, the control device can be other devices capable of achieving the same effect, and can be flexibly set according to actual conditions.

as an improvement of the coating system with pressure compensation device according to the present invention, the sensing device is a pressure sensor. Besides, the sensing device can be other devices capable of achieving the same effect, and can be flexibly arranged according to actual conditions.

The second purpose of the invention is: in view of the shortcomings of the prior art, a method for using a coating system with a pressure compensation device is also provided to improve the stability and efficiency of the operation of the coating system.

To achieve the above object, the present invention provides a work flow of a coating system having a pressure compensation device, comprising the steps of:

The sensing device detects the pressure of the slurry in the membrane head in real time and transmits information to the control device in real time;

The control device carries out real-time operation processing on the pressure information and controls the working state of the driving device according to the operation result;

closing the reflux valve, opening the coating valve and coating by the film head;

opening the reflux valve, closing the coating valve and stopping coating the film head;

When different membranes of membrane head coating are long, the coating clearance can appear, and at the coating clearance, thick liquids pressure in the membrane head can increase, and controlling means control drive arrangement starts work this moment, and drive arrangement passes through the connecting rod and drives the baffle motion, with unnecessary thick liquids suction holding vessel, make thick liquids in the holding vessel slowly input membrane head again when the coating for thick liquids pressure in the membrane head maintains stably, and the different membrane length thickness of membrane head coating is even.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a circuit connection according to an embodiment of the present invention;

FIG. 3 is a graph of areal density data for different coating film lengths in the production of a pre-improvement initial part;

FIG. 4 is a graph of head thickness data for different coating film lengths before improvement;

FIG. 5 is a graph of areal density data distribution for different coating film lengths in the production of a first part of an example of the invention;

FIG. 6 is a graph of head thickness data for different coating film lengths in an example of the present invention;

wherein: 1-a feeding pipe; 2-a reflux valve; 3-a coating valve; 4-a pressure compensation device; 41-a drive device; 42-connecting rod; 43-a baffle; 44-a canister; 45-a sensing device; 46-a control device; 5-membrane head; 6-diaphragm valve; 7-steel roll.

Detailed Description

as used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, 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 by those skilled in the art according to specific situations.

the present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited thereto.