CN211480168U

CN211480168U - Device for reducing moisture of lithium ion battery diaphragm

Info

Publication number: CN211480168U
Application number: CN201921328292.6U
Authority: CN
Inventors: 程跃; 邓洪贵; 高煜
Original assignee: Shanghai Energy New Materials Technology Co Ltd
Current assignee: Shanghai Energy New Materials Technology Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-09-11
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a reduce device of lithium ion battery diaphragm moisture, a serial communication port, it contains between the drying, and upper left end and upper right end between the drying all are equipped with the air intake, and left lower extreme and right lower extreme between the drying all are equipped with the air outlet, and central point between the drying puts and sets up the diaphragm rack, sets up two fans at the left end of diaphragm rack, and bottom central point between the drying puts and sets up the interlocking door, sets up plastic packaging machine at the right-hand member of interlocking door. In the drying room, air is circulated and alternated at the air inlet of the air outlet, and moisture in the air is solidified in a low-temperature state, so that the moisture content in the air is reduced and the air is introduced again; the effect of rapidly reducing the moisture of the lithium ion battery diaphragm is realized, and when the lithium ion battery diaphragm moisture control device is applied to production operation, the phenomenon that the product yield is reduced due to the fact that the moisture of the lithium ion battery diaphragm is higher can be effectively responded, and the operation efficiency and the product yield are improved.

Description

Device for reducing moisture of lithium ion battery diaphragm

Technical Field

The utility model belongs to the technical field of lithium ion battery equipment technique and specifically relates to a reduce device of lithium ion battery diaphragm moisture.

Background

Lithium ion batteries have been widely used in electronic products such as portable phones, digital cameras, notebook computers, electric tools, electric vehicles, and the like, because of their advantages of high voltage, high specific energy, wide working temperature range, stable discharge, greenness, no pollution, and good safety.

The lithium ion battery generally comprises four basic components, namely a positive pole piece, a negative pole piece, electrolyte, a lithium ion battery diaphragm and a shell, wherein the lithium ion battery diaphragm is one of four key materials of the lithium ion battery, is a material for connecting and separating the positive pole piece and the negative pole piece of the lithium ion battery, is an electronic insulator, but allows lithium ions to pass through, can prevent the short circuit of the positive pole piece and the negative pole piece, and can also obstruct the current conduction in the lithium ion battery through a closed pore function when the battery is overheated.

The preparation of the lithium ion battery diaphragm generally adopts the modes of spraying, printing, gravure coating, wire rod coating or extrusion coating to coat ceramic diaphragm slurry or polymer diaphragm slurry on the surface of a PE base film, a PP base film or a non-woven fabric base film, and the lithium ion battery diaphragm is prepared after drying. After the base film is coated with ceramic diaphragm slurry or polymer diaphragm slurry, the moisture in the lithium ion battery diaphragm generally rises sharply, and the moisture content of the lithium ion battery diaphragm is too high, so that the insulativity and the heat dissipation of the lithium ion battery diaphragm can be seriously influenced, the conductivity of a subsequently prepared lithium ion battery can be directly influenced, and particularly, after the moisture content of the lithium ion battery diaphragm exceeds the standard, the safety of the lithium ion battery can be even influenced. Therefore, the reasonable control of the moisture content of the lithium ion battery separator is particularly important.

At present, the lithium ion battery diaphragm is mainly placed in a drying room for drying treatment, but the method has long drying time, unobvious drying effect and low efficiency, so that specially designed methods are needed to quickly reduce the moisture of the lithium ion battery diaphragm and improve the production efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a device that reduces lithium ion battery diaphragm moisture.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a reduce device of lithium ion battery diaphragm moisture, its characterized in that, it contains between the drying, and upper left end and upper right end between the drying all are equipped with the air intake, and lower left end and lower right end between the drying all are equipped with the air outlet, and central point between the drying puts and sets up the diaphragm rack, sets up two fans at the left end of diaphragm rack, and bottom central point between the drying puts and sets up the interlocking door, sets up plastic packaging machine at the right-hand member of interlocking door.

The distance between the fan and the diaphragm placing frame is 0.5m-1.5m

The distance between the interlocking door and the plastic packaging machine is 1m-4 m.

The air outlet and the air inlet are not required to be plugged by the diaphragm placing rack and the fan, and the distance between the diaphragm placing rack and the fan is not limited

The plastic core sleeve is arranged on the membrane placing frame.

The membrane placing frame is placed in the drying room for a long time, so that the moisture on the membrane placing frame is reduced;

the fan is used for blowing air aiming at the diaphragm to force the air in the drying room to flow, so as to promote the rapid evaporation of the moisture on the diaphragm;

the plastic core sleeve is placed in a drying room for a long time, so that the moisture on the sleeve is reduced, and the moisture on the diaphragm absorption sleeve during packaging is reduced;

the diaphragm is packaged by the aluminum plastic film packaging bag, so that the external moisture permeation is reduced;

and the plastic packaging machine extracts air in the packaging bag during packaging, and reduces moisture absorption of a diaphragm in the packaging bag.

Compared with the prior art, the utility model has the positive effects that:

in the overdrying room, air is circulated and alternated at the air inlet of the air outlet, moisture in the air is solidified in a low-temperature state, and the air is introduced again after the moisture content in the air is reduced; the membrane placing frame is placed in a drying room for a long time, so that the moisture on the membrane placing frame is reduced; blowing the air in the drying room by a fan aiming at the diaphragm to force the air in the drying room to flow, and promoting the rapid evaporation of the moisture on the diaphragm; the plastic core sleeve is placed in a drying room for a long time, so that the moisture on the sleeve is reduced, and the moisture on the sleeve absorbed by a diaphragm during packaging is reduced; the effect of rapidly reducing the moisture of the lithium ion battery diaphragm is realized, and when the lithium ion battery diaphragm moisture control device is applied to production operation, the phenomenon that the product yield is reduced due to the fact that the moisture of the lithium ion battery diaphragm is higher can be effectively responded, and the operation efficiency and the product yield are improved.

Drawings

FIG. 1 is a schematic illustration of a drying room of the present application;

the labels in the figures are:

100 of the drying room, and a drying room,

101 comprises an air inlet opening which is arranged on the air inlet opening,

102 of the air outlet, and a water outlet,

103 the door is interlocked with the door in a locked state,

200 of the membrane placing rack, wherein the membrane placing rack is arranged on the rack,

300 of the fan, the fan is arranged,

a 400 plastic packaging machine, a packaging machine,

500 plastic core sleeve;

Detailed Description

The following provides the utility model relates to a reduce device's of lithium ion battery diaphragm moisture's embodiment.

Example 1

As shown in fig. 1, the utility model provides a method for reducing moisture of lithium ion battery diaphragm, the method for reducing moisture of lithium ion battery diaphragm includes: a drying room 100, a diaphragm placing frame 200, a fan 300, a plastic packaging machine 400 and a plastic core sleeve.

Specifically, the drying room 100 includes an air inlet 101, an air outlet 102, and an interlock door 103. The air inlet 101 and the air outlet 102 are used for circulating and alternating air, moisture in the air is solidified at a low temperature, the moisture content in the air is reduced, air is then introduced, the moisture content of the air in a drying room is ensured to be continuously low, and therefore moisture evaporation in a lithium ion battery diaphragm is promoted; the membrane placing frame 200 is in a drying room for a long time, so that the moisture on the membrane placing frame is reduced; the fan 300 is aligned with the membrane on the membrane placing frame 200 for blowing, so that air in the drying room is forced to flow, and rapid evaporation of moisture on the membrane is promoted; the plastic packaging machine 400 is arranged in the drying room 100, and air in the packaging bag is extracted during packaging, so that moisture absorption of a diaphragm in the packaging bag is reduced.

As an example, the edge of the box door 101 further includes a sealing ring, and the sealing ring includes a silicone sealing ring.

Specifically, the drying room 100 includes the air inlet 101, the air outlet 102, and the interlock door 103. In this embodiment, the air inlet 101 and the air outlet 102 are used for circulating alternate air, moisture in the air is solidified at a low temperature, moisture content in the air is reduced, and then air is introduced, so that the moisture content of the air in a drying room is ensured to be continuously low, and thus, moisture evaporation in a lithium ion battery diaphragm is promoted.

By way of example, the diaphragm holder 200 is made of stainless steel. In this embodiment, the membrane placing frame 200 is made of stainless steel with low price, weak corrosion media such as air, steam and water, and stainless steel with rust resistance. The position and the type of the membrane placing frame can be selected by those skilled in the art according to specific needs, and are not limited herein.

Specifically, the fan 300 is directed at the membrane of the membrane holder 200 to blow, so as to force the air in the drying room to flow, and promote the rapid evaporation of the moisture on the membrane. The type, location and number of the air flowing devices are increased in this embodiment, and those skilled in the art can select the devices according to their specific needs, which is not limited herein.

As an example, the blister pack machine 400 is located in the drying room 100 for a long time.

Specifically, the plastic packaging machine 400 is located in the drying room 100, and air in the packaging bag is extracted during packaging, so that moisture absorption of a diaphragm in the packaging bag is reduced.

As an example, the plastic core sleeve 500 is made of EPE.

Specifically, the plastic core sleeve 500 is made of EPE material and is in a dry state for a long time, and unlike a paper core sleeve, the plastic core sleeve does not contain water inside.

In summary, the method for reducing the moisture content of the lithium ion battery diaphragm of the utility model reduces the moisture content of the lithium ion battery diaphragm placing and packaging environment through the drying room, and reduces the moisture content of the diaphragm placing position through the diaphragm placing frame; the lithium ion battery diaphragm is quickly dried by the fan device and blown by aiming at the diaphragm, so that air in a drying room is forced to flow, and the quick evaporation of moisture on the diaphragm is promoted; the effect of rapidly reducing the moisture of the lithium ion battery diaphragm is realized, and when the lithium ion battery diaphragm moisture control device is applied to production operation, the phenomenon that the product yield is reduced due to the fact that the moisture of the lithium ion battery diaphragm is higher can be effectively responded, and the operation efficiency and the product yield are improved. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as within the protection scope of the present invention.

Claims

1. The utility model provides a reduce device of lithium ion battery diaphragm moisture, its characterized in that, it contains between the drying, and upper left end and upper right end between the drying all are equipped with the air intake, and lower left end and lower right end between the drying all are equipped with the air outlet, and central point between the drying puts and sets up the diaphragm rack, sets up two fans at the left end of diaphragm rack, and bottom central point between the drying puts and sets up the interlocking door, sets up plastic packaging machine at the right-hand member of interlocking door.

2. The device for reducing moisture of a lithium ion battery separator according to claim 1, wherein the distance between the fan and the separator holder is 0.5m to 1.5 m.

3. The device for reducing moisture of the lithium ion battery separator according to claim 1, wherein the distance between the interlocking door and the plastic packaging machine is 1m-4 m.

4. The device for reducing moisture of the lithium ion battery separator according to claim 1, wherein the plastic core sleeve is placed on the separator placing frame.