CN209880716U - Heat treatment device for lithium battery diaphragm - Google Patents

Abstract

The utility model discloses a heat treatment device for a lithium battery diaphragm, which comprises a preheating chamber, a heat treatment chamber and an air supply chamber, a heat treatment chamber is arranged at one side of the preheating chamber, an air supply chamber is arranged at one side of the top of the preheating chamber, a vertical plate is arranged at the top of the heat treatment chamber close to the middle position, a telescopic motor is arranged at one side of the vertical plate, one side of the telescopic motor is provided with a telescopic loop bar, the output end of the telescopic loop bar is connected with a telescopic rod, the other end of the telescopic rod is connected with a connecting plate, one side of the bottom of the connecting plate is welded with a connecting rod, the other end of the connecting rod is introduced into the heat treatment chamber, the other end of the connecting rod is provided with a dryer, the fan is characterized in that a fixing plate is arranged in the air supply chamber close to the middle, a motor is installed on the fixing plate, the output end of the motor is connected with a rotating shaft, and fan blades are installed on the rotating shaft. Has the advantages that: the utility model discloses whole heat treatment process is very even, can satisfy large-scale industrial production requirement.

Description

Heat treatment device for lithium battery diaphragm

Technical Field

The utility model relates to a lithium battery diaphragm equipment technical field particularly, relates to a heat treatment device for lithium battery diaphragm.

Background

The four key materials of the lithium ion battery are a positive electrode material, a negative electrode material, electrolyte and a diaphragm. The diaphragm has the main functions of isolating the positive electrode and the negative electrode and preventing electrons from passing through, and can allow ions to pass through, so that the lithium ions are rapidly transmitted between the positive electrode and the negative electrode in the charging and discharging process. The quality of the performance of the diaphragm directly influences the internal resistance, discharge capacity, cycle service life and the safety performance of the battery. The thinner the separator, the higher the porosity, the lower the internal resistance of the battery, and the better the high-rate discharge performance. In the construction of lithium batteries, the separator is one of the key internal components. The performance of the diaphragm determines the interface structure, internal resistance and the like of the battery, directly influences the capacity, circulation, safety performance and other characteristics of the battery, and the diaphragm with excellent performance plays an important role in improving the comprehensive performance of the battery. The separator has a main function of separating the positive electrode and the negative electrode of the battery to prevent short circuit due to contact between the two electrodes, and also has a function of allowing electrolyte ions to pass therethrough.

The existing heat treatment device has discontinuous process and non-uniform temperature field in the oven, and the stability of the heat treatment film performance of each batch is difficult to ensure. In addition, due to the defects of shrinkage, deformation and the like caused by sudden temperature rise of the diaphragm in the heat treatment chamber, preheating treatment is generally needed, and the preheating needs to provide a heat source, so that energy can not be well saved, and the requirement of large-scale production is difficult to meet.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat treatment device for lithium cell diaphragm to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a heat treatment device for a lithium battery diaphragm comprises a preheating chamber, a heat treatment chamber and an air supply chamber, wherein the heat treatment chamber is arranged on one side of the preheating chamber, the air supply chamber is arranged on one side of the top of the preheating chamber, a vertical plate is arranged on the top of the heat treatment chamber close to the middle position, a telescopic motor is arranged on one side of the vertical plate, a telescopic sleeve rod is arranged on one side of the telescopic motor, the telescopic motor and the telescopic sleeve rod are connected with the vertical plate in a welded mode, the output end of the telescopic sleeve rod is connected with a telescopic rod, the other end of the telescopic rod is connected with a connecting plate, a connecting rod is welded on one side of the bottom of the connecting plate, the other end of the connecting rod is introduced into the heat treatment chamber, a dryer is mounted on the other end of the connecting rod, the guide roll has threely, the both ends of guide roll are fixed on the inner wall of heat treatment chamber, be provided with the fixed plate near the centre in the air supply chamber, install the motor on the fixed plate, the output of motor is connected with the pivot, install the flabellum in the pivot, the flabellum is a plurality of.

Furthermore, a plurality of vent holes are reserved on the fixing plate.

Furthermore, a first pipeline is connected between the air supply chamber and the preheating chamber, and a second pipeline is connected between the air supply chamber and the heat treatment chamber.

Furthermore, the other end of the first pipeline is communicated into the preheating chamber, and the other end of the first pipeline is connected with an exhaust pipe.

Furthermore, the bottom of the exhaust pipe is connected with a plurality of air deflectors.

Further, the bottoms of the preheating chamber and the heat treatment chamber are provided with bottom plates.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses preheat the lithium battery diaphragm through the preheating chamber in advance, pass through thermal treatment room thermal treatment again, carry out preheating treatment earlier to the lithium battery diaphragm through preheating chamber, avoided the film because the sudden heating up takes place the shrink in thermal treatment room, defects such as deformation, and the preheating chamber utilizes the waste heat in the thermal treatment room, and the energy saving, heat utilization rate is high, through the flexible motor that sets up, the telescopic link, connecting plate and connecting rod, the round trip movement is dried about the drying-machine, make whole thermal treatment process very even, can satisfy the requirement of large-scale industrial production.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a heat treatment apparatus for a lithium battery separator according to an embodiment of the present invention;

fig. 2 is a front sectional view of a heat treatment apparatus for a lithium battery separator according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a blowing chamber according to an embodiment of the present invention.

Reference numerals:

1. a base plate; 2. a preheating chamber; 3. a heat treatment chamber; 4. an air supply chamber; 5. a first conduit; 6. a second conduit; 7. a vertical plate; 8. a telescopic motor; 9. a telescopic loop bar; 10. a telescopic rod; 11. a connecting plate; 12. a guide plate; 13. an exhaust duct; 14. a guide roller; 15. a dryer; 16. a pipe orifice; 17. a connecting rod; 18. a motor; 19. a fixing plate; 20. a vent hole; 21. a fan blade; 22. a rotating shaft.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a heat treatment device for a lithium battery diaphragm according to an embodiment of the present invention includes a preheating chamber 2, a heat treatment chamber 3 and an air supply chamber 4, the heat treatment chamber 3 is disposed on one side of the preheating chamber 2, the air supply chamber 4 is disposed on one side of the top of the preheating chamber 2, a vertical plate 7 is disposed near the middle position of the top of the heat treatment chamber 3, a telescopic motor 8 is disposed on one side of the vertical plate 7, a telescopic rod 9 is disposed on one side of the telescopic motor 8, the telescopic motor 8 and the telescopic rod 9 are welded to the vertical plate 7, an output end of the telescopic rod 9 is connected to a telescopic rod 10, the other end of the telescopic rod 10 is connected to a connection plate 11, a connection rod 17 is welded to one side of the bottom of the connection plate 11, the other end of the connection rod 17 is inserted into the heat treatment chamber 3, and, the drying-machine 15 bottom is provided with mouth of pipe 16, mouth of pipe 16 is a plurality of, be provided with guide roll 14 in the heat treatment chamber 3, guide roll 14 has threely, the both ends of guide roll 14 are fixed on the inner wall of heat treatment chamber 3, be provided with fixed plate 19 near the centre in the air supply chamber 4, install motor 18 on the fixed plate 19, the output of motor 18 is connected with pivot 22, install flabellum 21 in the pivot 22, flabellum 21 is a plurality ofly.

Through the above scheme of the present invention, the fixing plate 19 is provided with a plurality of air holes 20, and the air holes 20 facilitate the circulation of air; a first pipeline 5 is connected between the air supply chamber 4 and the preheating chamber 2, a second pipeline 6 is connected between the air supply chamber 4 and the heat treatment chamber 3, the other end of the first pipeline 5 is introduced into the preheating chamber 2, the other end of the first pipeline 5 is connected with an exhaust pipe 13, the bottom of the exhaust pipe 13 is connected with an air deflector 12, and the air deflector 12 directly blows hot air to a lithium battery diaphragm; the number of the air deflectors 12 is multiple, the bottom of the preheating chamber 2 and the bottom of the heat treatment chamber 3 are provided with a bottom plate 1, and the bottom plate 1 is used for placing the preheating chamber 2 and the heat treatment chamber 3.

When the preheating device is used specifically, a lithium battery diaphragm passes through the preheating chamber 2 and the heat treatment chamber 3, bypasses the guide roller 14 and is led out from one side of the heat treatment chamber 3, the drying machine 15 and the telescopic motor 8 are started, then the motor 18 is started, the rotating shaft 22 rotates to drive the fan blades 21 to rotate, waste heat in the heat treatment chamber 3 is pumped out from the second pipeline 6 and passes through the air supply chamber 4 and the first pipeline 5, the waste heat is blown to the lithium battery diaphragm in the preheating chamber 2 from the guide plate 12 of the exhaust pipe 13, preheating treatment is carried out, the telescopic rod 10 moves left and right to drive the connecting plate 11 to move left and right, the connecting plate 11 moves left and right to drive the connecting rod 17 and the drying machine 15 to move left and right, hot air blown out by the drying.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A heat treatment device for a lithium battery diaphragm is characterized by comprising a preheating chamber (2), a heat treatment chamber (3) and an air supply chamber (4), wherein the heat treatment chamber (3) is arranged on one side of the preheating chamber (2), the air supply chamber (4) is arranged on one side of the top of the preheating chamber (2), a vertical plate (7) is arranged at the position, close to the middle position, of the top of the heat treatment chamber (3), a telescopic motor (8) is arranged on one side of the vertical plate (7), a telescopic sleeve rod (9) is arranged on one side of the telescopic motor (8), the telescopic motor (8) and the telescopic sleeve rod (9) are connected with the vertical plate (7) in a welding mode, an output end of the telescopic sleeve rod (9) is connected with a telescopic rod (10), the other end of the telescopic rod (10) is connected with a connecting plate (11), and a connecting rod (, the other end of connecting rod (17) lets in heat treatment chamber (3), drying-machine (15) are installed to the other end of connecting rod (17), drying-machine (15) bottom is provided with mouth of pipe (16), mouth of pipe (16) are a plurality of, be provided with guide roll (14) in heat treatment chamber (3), guide roll (14) have threely, the both ends of guide roll (14) are fixed on the inner wall of heat treatment chamber (3), be close to in air-supplying chamber (4) and be provided with fixed plate (19) in the middle of, install motor (18) on fixed plate (19), the output of motor (18) is connected with pivot (22), install flabellum (21) on pivot (22), flabellum (21) are a plurality of.

2. The thermal processing device for the lithium battery separator according to claim 1, wherein a plurality of vent holes (20) are formed in the fixing plate (19).

3. The heat treatment apparatus for lithium battery separators according to claim 1, wherein a first duct (5) is connected between the blowing chamber (4) and the preheating chamber (2), and a second duct (6) is connected between the blowing chamber (4) and the heat treatment chamber (3).

4. The thermal processing device for lithium battery separators as claimed in claim 3, characterized in that the other end of the first pipe (5) opens into the preheating chamber (2), and the other end of the first pipe (5) is connected with an exhaust duct (13).

5. The heat treatment device for the lithium battery diaphragm as claimed in claim 4, wherein the bottom of the exhaust duct (13) is connected with a plurality of air deflectors (12), and the number of the air deflectors (12) is multiple.

6. The heat treatment apparatus for lithium battery separator according to claim 1, wherein the bottoms of the preheating chamber (2) and the heat treatment chamber (3) are provided with a bottom plate (1).