Lithium battery diaphragm drying device

Abstract

The utility model discloses a lithium battery diaphragm drying device, relates to the technical field of lithium battery processing, and solves the problems that when a lithium battery diaphragm enters a drying machine to be dried, external dust and impurities are attached to the outer surface of the battery diaphragm, dust is easily attached to the outer side face of the diaphragm after heating, and the production quality of the diaphragm is affected. And only single-face drying can be carried out on the lithium battery diaphragm, and the drying efficiency is low. Comprising a dryer body, a dedusting bin and a drying bin are arranged on the dryer body, and an in-out groove is formed in the side face of the dedusting bin; the heat conduction assembly comprises an air blower and a heat conduction channel formed in the top of the drying bin; according to the diaphragm drying device, the electric heating pipe is started to generate heat, the air blower is used for blowing air into the heat conducting channel, hot air is led out from the upper air guide cover and the lower air guide cover and acts on a diaphragm, double-face drying of the diaphragm can be achieved, and the drying efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery processing, and in particular relates to a lithium battery diaphragm drying device. Background Art

[0002] In the structure of lithium batteries, the diaphragm is one of the key inner components. The performance of the diaphragm determines the interface structure and internal resistance of the battery, and directly affects the battery's capacity, cycle and safety performance. A diaphragm with excellent performance plays an important role in improving the overall performance of the battery. The main function of the diaphragm is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. The diaphragm material is non-conductive, and its physical and chemical properties have a great influence on the performance of the battery. Different types of batteries use different diaphragms.

[0003] At present, lithium battery diaphragms need to be dried during their production and processing. However, in existing lithium battery diaphragm drying devices, when the lithium battery diaphragms enter the dryer for drying, external dust and impurities adhere to the outer surface of the battery diaphragms. After heating, the dust easily adheres to the outer side of the diaphragm, affecting the production quality of the diaphragm. In addition, only one side of the lithium battery diaphragm can be dried, and the drying efficiency is low.

[0004] Therefore, based on the above problems, we designed a lithium battery diaphragm drying device. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a lithium battery diaphragm drying device, which solves the technical problems of the existing lithium battery diaphragm drying device, that when the lithium battery diaphragm enters the dryer for drying, external dust and impurities adhere to the outer surface of the battery diaphragm, and after heating, the dust easily adheres to the outer side of the diaphragm, affecting the production quality of the diaphragm, and that only one side of the lithium battery diaphragm can be dried, resulting in low drying efficiency.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the utility model, a lithium battery diaphragm drying device is provided, comprising a drying machine body, wherein a dust removal bin and a drying bin are arranged on the drying machine body, and an inlet and outlet slot is arranged on the side of the dust removal bin;

[0007] Also includes:

[0008] A heat conduction component, the heat conduction component includes a blower, a heat conduction channel arranged on the top of the drying chamber, an electric heating tube arranged in the heat conduction channel, and an air duct arranged on the blower, a pair of air guide covers distributed up and down are connected to the bottom of the heat conduction channel, and the two air guide covers are connected by a pipeline;

[0009] A pair of cleaning suction pipes are respectively arranged at the inlet and outlet slots of the dust removal bin. A cleaning cylinder is arranged on the side of the dryer body. A barrier filter element and a dust suction pump are arranged in the cleaning cylinder. Each cleaning suction pipe is connected to the suction port of the cleaning cylinder.

[0010] A further improvement is that a dust suction port is opened on the inner opposite surface of each cleaning suction pipe, a connecting pipe is connected between the two cleaning suction pipes, and the connecting pipe is connected to the suction port of the cleaning cylinder.

[0011] A further improvement is that a negative pressure zone and a dust suction zone are connected to each other in the cleaning cylinder, the barrier filter element is arranged in the dust suction zone, and the dust suction pump is arranged in the negative pressure zone.

[0012] A further improvement is that two sets of guide rollers are respectively arranged inside the dust removal bin and the drying bin, and the two sets of guide rollers are distributed up and down in the dust removal bin and the drying bin.

[0013] A further improvement is that a mounting seat for installing a blower is provided on the side of the dryer body, the blower is installed on the mounting seat by fastening bolts, the upper air guide cover is installed on the heat conduction channel, and a branch pipe is connected between the upper air guide cover and the lower air guide cover.

[0014] A further improvement is that a pair of the air guide covers and the cleaning suction pipe are respectively located between the two groups of guide rollers.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model generates negative pressure by providing suction force through a vacuum pump in the negative pressure zone, so that dust and impurities generated on the surface of the diaphragm are simultaneously sucked into the dust suction zone from the suction ports of the upper and lower cleaning suction pipes and fall onto the barrier filter element, thereby achieving the effect of dust removal and cleaning of the diaphragm, thereby effectively preventing external dust and impurities from adhering to the outer surface of the battery diaphragm, and improving the production quality of the diaphragm;

[0017] (2) After the diaphragm has been dusted, the utility model enters the drying chamber and starts the electric heating tube to generate heat. The blower then blows air into the heat guide channel, and the hot air is guided out from the upper and lower air guide covers and acts on the diaphragm, thereby achieving double-sided drying of the diaphragm and achieving higher drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional side view structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the utility model from top view.

[0021] Markings in the figure:

[0022] 1. Dryer body;

[0023] 2. Dust removal bin; 21. Inlet and outlet slots;

[0024] 3. Heat conduction component; 31. Mounting seat; 32. Blower; 33. Air duct; 34. Heat conduction channel; 341. Electric heating tube; 35. Air guide cover; 36. Branch pipe;

[0025] 4. Drying chamber;

[0026] 5. Cleaning straw; 51. Dust suction port; 52. Cleaning cylinder; 521. Negative pressure area; 522. Dust suction area; 53. Barrier filter element; 54. Dust suction pump; 55. Connecting pipe; 6. Guide roller. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 As shown, a lithium battery diaphragm drying device comprises a drying machine body 1, a dust removal bin 2 and a drying bin 4 are arranged on the drying machine body 1, and an inlet and outlet slot 21 is arranged on the side of the dust removal bin 2;

[0029] Among them, two sets of guide rollers 6 are respectively arranged inside the dust removal bin 2 and the drying bin 4, and the two sets of guide rollers 6 are distributed up and down in the dust removal bin 2 and the drying bin 4;

[0030] like Figure 1 and Figure 3 As shown, when implemented, it includes: a heat conduction component 3, the heat conduction component 3 includes a blower 32, a heat conduction channel 34 arranged on the top of the drying chamber 4, an electric heating pipe 341 arranged in the heat conduction channel 34 and an air duct 33 arranged on the blower 32, and a pair of air guide covers 35 distributed up and down are connected to the bottom of the heat conduction channel 34, and the two air guide covers 35 are connected by a pipeline;

[0031] Among them, a mounting seat 31 for installing a blower 32 is provided on the side of the dryer body 1, and the blower 32 is installed on the mounting seat 31 by fastening bolts, and an upper air guide cover 35 is installed on the heat conduction channel 34. A branch pipe 36 is connected between the upper air guide cover 35 and the lower air guide cover 35, and a pair of air guide covers 35 are located between two groups of guide rollers 6. When the diaphragm passes through dust removal and enters the drying chamber 4, the heat generated by the electric heating tube 341 is started, and then the blower 32 is used to blow air into the heat conduction channel 34, and the hot air is guided out from the upper and lower air guide covers 35 and acts on the diaphragm simultaneously, so that double-sided drying of the diaphragm can be achieved, and the drying efficiency is higher;

[0032] like Figure 2 and Figure 3 As shown, the implementation includes: a pair of cleaning suction pipes 5, which are respectively arranged at the inlet and outlet slots 21 of the dust removal bin 2, and a cleaning cylinder 52 is arranged on the side of the dryer body 1. The cleaning cylinder 52 is provided with a barrier filter element 53 and a dust suction pump 54, and each cleaning suction pipe 5 is connected to the suction port of the cleaning cylinder 52;

[0033] Wherein, a dust suction port 51 is opened on the inner opposite surface of each cleaning suction pipe 5, a connecting pipe 55 is connected between the two cleaning suction pipes 5, and the connecting pipe 55 is connected to the suction port of the cleaning cylinder 52, and a pair of cleaning suction pipes 5 is located between the two sets of guide rollers 6;

[0034] Among them, a connected negative pressure zone 521 and a dust suction zone 522 are provided in the cleaning cylinder 52, the barrier filter element 53 is arranged in the dust suction zone 522, and the dust suction pump 54 is arranged in the negative pressure zone 521. The vacuum pump 54 in the negative pressure zone 521 provides suction to generate negative pressure, so that dust and impurities generated on the surface of the diaphragm are simultaneously sucked in from the dust suction ports 51 of the upper and lower cleaning suction pipes 5, enter the dust suction zone 522 through the connecting pipe 55, and fall on the barrier filter element 53, so as to achieve the effect of dust removal and cleaning of the diaphragm, thereby effectively avoiding the adhesion of external dust and impurities to the outer surface of the battery diaphragm and improving the production quality of the diaphragm.

[0035] When implementing this embodiment, it should also be noted that when the application document is implemented, the power supply of the dust pump 54, the blower 32 and the electric heating tube 341 is provided by an external power supply. In addition, it should be noted that this application document is only for the lithium battery diaphragm drying device. When the lithium battery diaphragm enters the dryer for drying, external dust and impurities adhere to the outer surface of the battery diaphragm. After heating, the dust easily adheres to the outer side of the diaphragm, affecting the production quality of the diaphragm. In addition, the lithium battery diaphragm can only be dried on one side, and the disadvantage of low drying efficiency is improved, and other aspects are not involved; the working principle of this lithium battery diaphragm drying device is introduced as follows:

[0036] During installation and use, the staff will introduce the diaphragm from the inlet and outlet slot 21 of the dust removal bin 2, place it between the upper and lower guide rollers 6, and then lead it out from the other side of the drying bin 4;

[0037] Then, the vacuum pump 54 in the negative pressure area 521 provides suction force to generate negative pressure, so that dust and impurities on the surface of the diaphragm are simultaneously sucked in from the suction ports 51 of the upper and lower cleaning suction pipes 5, enter the vacuum area 522 through the connecting pipe 55, and fall on the barrier filter element 53, thereby achieving the effect of dust removal and cleaning of the diaphragm, thereby effectively preventing external dust and impurities from adhering to the outer surface of the battery diaphragm, and improving the production quality of the diaphragm;

[0038] After the diaphragm is dusted, it enters the drying chamber 4, and the heat generated by the electric heating tube 341 is started. The blower 32 blows air into the heat conduction channel 34, and the hot air is discharged from the upper and lower air guide covers 35 and acts on the diaphragm simultaneously, so that double-sided drying of the diaphragm can be achieved, and the drying efficiency is higher.

[0039] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A lithium battery diaphragm drying device, comprising a drying machine body (1), wherein the drying machine body (1) is provided with a dust removal bin (2) and a drying bin (4), and the side of the dust removal bin (2) is provided with an inlet and outlet slot (21); It is characterized in that Also includes: A heat conduction component (3), the heat conduction component (3) comprising a blower (32), a heat conduction channel (34) arranged at the top of a drying chamber (4), an electric heating tube (341) arranged in the heat conduction channel (34), and an air duct (33) arranged on the blower (32), the bottom of the heat conduction channel (34) being connected to a pair of air guide covers (35) distributed up and down, and the two air guide covers (35) being connected via a pipeline; A pair of cleaning suction pipes (5) are respectively arranged at the inlet and outlet grooves (21) of the dust removal bin (2) from top to bottom. A cleaning cylinder (52) is arranged on the side of the dryer body (1). A barrier filter element (53) and a dust suction pump (54) are arranged in the cleaning cylinder (52). Each cleaning suction pipe (5) is connected to the suction port of the cleaning cylinder (52).

2. A lithium battery diaphragm drying device according to claim 1, characterized in that: A dust suction port (51) is provided on the inner opposite surface of each cleaning suction pipe (5), a connecting pipe (55) is connected between the two cleaning suction pipes (5), and the connecting pipe (55) is connected to the suction port of the cleaning cylinder (52).

3. A lithium battery diaphragm drying device according to claim 1, characterized in that: The cleaning cylinder (52) is provided with a negative pressure zone (521) and a dust suction zone (522) which are connected to each other. The barrier filter element (53) is arranged in the dust suction zone (522), and the dust suction pump (54) is arranged in the negative pressure zone (521).

4. A lithium battery diaphragm drying device according to claim 1, characterized in that: Two groups of guide rollers (6) are respectively arranged inside the dust removal bin (2) and the drying bin (4), and the two groups of guide rollers are distributed vertically inside the dust removal bin (2) and the drying bin (4).

5. A lithium battery diaphragm drying device according to claim 1, characterized in that: in, A mounting seat (31) for mounting a blower (32) is provided on the side of the dryer body (1); the blower (32) is mounted on the mounting seat (31) by means of fastening bolts; the upper air guide cover (35) is mounted on the heat conduction channel (34); and a branch pipe (36) is connected between the upper air guide cover (35) and the lower air guide cover (35).

6. A lithium battery diaphragm drying device according to claim 4, characterized in that: The pair of air guide covers (35) and the cleaning suction pipe (5) are respectively located between the two groups of guide rollers (6).

Images