High-temperature treatment equipment for lithium battery production

Abstract

The utility model relates to the technical field of high-temperature treatment, in particular to high-temperature treatment equipment for lithium battery production, which comprises an outer frame, a bearing plate, a door plate, a sealing frame, a heating piece, an air pump II, a nitrogen tank and the like, the outer frame is a mounting carrier of the equipment, a sealing frame is mounted in the outer frame through a bearing plate, the outer frame and the sealing frame are sealed and separated, the sealing frame is used for carrying out high-temperature activation treatment on a lithium battery, and the front sides of the outer frame and the sealing frame are open. Air in the sealing frame is pumped away through the vacuum pump, nitrogen in the nitrogen tank is filled into the sealing frame through the air pump II, an inert gas environment can be effectively created, lithium battery materials are prevented from being oxidized in the high-temperature treatment process, meanwhile, the sealing performance of the equipment is further enhanced through sealing gaskets inside and outside the sealing frame, and the service life of the equipment is prolonged. The atmosphere stability in the treatment process is ensured, and the quality of a battery material and the performance of a finished battery are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature processing technical field especially relates to a high temperature processing apparatus for lithium battery production. BACKGROUND

[0002] With the rapid development of electric vehicles and energy storage systems, the demand for high-performance lithium batteries is increasing. In order to meet this demand, lithium battery manufacturers are constantly seeking ways to improve battery performance, including more precise heat treatment of battery materials. High-temperature processing equipment plays an important role in this process, as it can help optimize the microstructure of positive and negative electrode materials, improve the energy density, cycle stability and safety of the battery.

[0003] High-temperature activation treatment of lithium batteries is an important means to improve battery performance. In order to prevent battery materials from reacting with oxygen or other harmful gases during high-temperature treatment, high-temperature activation treatment can create a protective atmosphere by drawing in inert gas in a vacuum environment, thereby maintaining the purity and stability of the materials. To ensure the quality of lithium battery materials, the atmospheric conditions during the treatment process must be strictly controlled, such as oxygen content and humidity. However, traditional high-temperature activation treatment equipment is usually unable to efficiently transfer heat to the battery materials, resulting in high energy consumption and high maintenance of stable atmospheric conditions. Therefore, it is necessary to have a high-temperature treatment equipment for lithium battery production with good practicality. SUMMARY

[0004] In order to overcome the shortcomings of high cost and limited scope of application of existing high-temperature activation treatment equipment, the utility model provides a high-temperature treatment equipment for lithium battery production with good practicality.

[0005] The technical scheme is as follows: a high-temperature treatment equipment for lithium battery production, comprising an outer frame, a bearing plate, a door plate, a sealing frame, a heating element, a gas pump II, a nitrogen tank, a communication pipe II, a connecting pipe, a vacuum pump and an air suction pipe, the sealing frame is installed in the outer frame through the bearing plate, the outer frame and the sealing frame are sealed and separated, the sealing frame is used for high-temperature activation treatment of lithium batteries, the outer frame and the sealing frame are both front opening, the front opening of the sealing frame is symmetrically hinged with a door plate, the top of the outer frame is provided with a heating element, the heating element is used for constant temperature heating of the sealing frame, the top of the outer frame is provided with a gas pump II, the top of the outer frame is also provided with a nitrogen tank, the gas inlet of the gas pump II is communicated to the upper side of the nitrogen tank through the connecting pipe, the gas outlet of the gas pump II is communicated to the sealing frame through the communication pipe II, one of the door plates is installed with a vacuum pump on the front side, and the air suction pipe is communicated to the sealing frame.

[0006] Optionally, the edges of the door plate are provided with sealing pads, the contact surfaces of the outer frame and the sealing frame are also provided with sealing pads, and the door plate can be tightly closed on the sealing frame to seal and separate the outer frame and the sealing frame into two compartments.

[0007] Optionally, the heating member comprises a gas pump I, a heater, a gas guide frame, a communication pipe I, an air inlet pipe, a valve I and an air outlet pipe, the top of the outer frame is provided with the gas pump I, the top of the outer frame is also provided with the heater, the air outlet of the gas pump I is connected with the heater through a pipeline, the front upper portion of the outer frame is provided with the gas guide frame, the heater is connected with the gas guide frame through the communication pipe I, the gas guide frame is connected with the compartment between the outer frame and the sealing frame through the air inlet pipe, and the top of the outer frame is provided with the air outlet pipe.

[0008] Optionally, the gas guide frame is provided with filter cotton, and the filter cotton is used for filtering the gas drawn into the gas guide frame from the outside.

[0009] Optionally, the utility model also includes a ventilation pipe, a valve II and an electric fan I, the left side wall of the sealing frame penetrates the outer frame through the ventilation pipe and is connected with the outside, the ventilation pipe is provided with the valve II, and the inside of the ventilation pipe is provided with the electric fan I which draws air inwards.

[0010] Optionally, the utility model also includes an exhaust pipe, a valve III and an electric fan II, the right side wall of the sealing frame penetrates the outer frame through the exhaust pipe and is connected with the outside, the exhaust pipe is provided with the valve III, and the inside of the ventilation pipe is provided with the electric fan II which exhausts air outwards.

[0011] Optionally, the nitrogen tank is provided with a gas filling valve, and the gas filling valve is used for supplementing nitrogen in the nitrogen tank and stabilizing the air pressure in the nitrogen tank.

[0012] The utility model discloses the beneficial effect is:

[0013] 1, the utility model discloses a vacuum pump is separated from the air in the sealing frame, and the nitrogen in the nitrogen tank is filled into the sealing frame through the gas pump II, can effectively create an inert gas environment, protect lithium battery material in the high temperature processing process from oxidation, and the sealing pad of the sealing frame further enhances the sealing property of the equipment, ensures the stability of the atmosphere in the processing process, and is favorable to improve the quality of battery material and the performance of finished product battery.

[0014] 2, the utility model discloses the design of heating member, allows the temperature in the sealing frame to be accurately controlled, and the heated gas is guided into the sealing frame through the gas pump I and the heater, ensures that lithium battery is activated under the appropriate temperature, and the filter cotton in the gas guide frame can also filter the entering gas, prevents impurities from entering the processing chamber, and further improves the cleanliness and controllability of the heating process.

[0015] 3, The utility model discloses still can through the breather pipe and exhaust pipe respectively import fresh gas and exhaust waste gas, this not only has improved the flexibility of equipment, strengthened security, prevented the problem such as possible pressure excessively high or gas leakage that appears in the processing, and nitrogen tank on the inflation valve can supplement nitrogen and stabilize the pressure in tank at any time, ensure that equipment can continuously and stably operate, reduced the operation interruption that leads to because of nitrogen deficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0017] Figure 2 It is the three-dimensional structure schematic diagram of the breather pipe and valve III of the utility model.

[0018] Figure 3 It is the three-dimensional structure section view of the utility model outer frame.

[0019] Figure 4 It is the three-dimensional structure section view of the utility model outer frame and sealing frame.

[0020] Figure 5 It is the three-dimensional structure schematic diagram of the utility model exhaust pipe and breather pipe etc.

[0021] Reference Signs: 1_outer frame, 1001_bearing plate, 2_door plate, 3_sealing frame, 4_air pump I, 5_heater, 6_air guide frame, 7_communication pipe I, 8_filtering cotton, 9_air inlet pipe, 91_air outlet pipe, 10_valve I, 11_air pump II, 12_nitrogen tank, 13_communication pipe II, 14_breather pipe, 141_valve II, 142_electric fan I, 15_exhaust pipe, 151_valve III, 152_electric fan II, 16_inflation valve, 17_connection pipe, 18_vacuum pump, 19_air suction pipe. DETAILED DESCRIPTION

[0022] The following description is only the preferred embodiment of the utility model, and does not limit the protection scope of the utility model.

[0023] Embodiment: a high-temperature treatment equipment for lithium battery production, such as Figures 1-3As shown, including the outer frame 1, bearing plate 1001, door plate 2, sealing frame 3, heating element, gas pump II 11, nitrogen tank 12, communication pipe II 13, connecting pipe 17, vacuum pump 18 and suction pipe 19, the outer frame 1 is the mounting carrier of the device, the sealing frame 3 is mounted in the outer frame through the bearing plate 1001, the outer frame 1 and the sealing frame 3 are sealed and separated, the sealing frame 3 is used for high temperature activation treatment of lithium battery, the outer frame 1 and the sealing frame 3 are both front opening, the front opening of the sealing frame 3 is symmetrically hinged with the door plate 2, the top of the outer frame 1 is provided with a heating element, the heating element is used for constant temperature heating of the sealing frame 3, the top of the outer frame 1 is provided with a gas pump II 11, the top of the outer frame 1 is also provided with a nitrogen tank 12, the gas inlet of the gas pump II 11 is communicated to one side of the upper part of the nitrogen tank 12 through the connecting pipe 17, the gas outlet of the gas pump II 11 is communicated to the sealing frame 3 through the communication pipe II 13, one of the door plates 2 is installed on the front side of the sealing frame 3, the vacuum pump 18 is installed on the front side of the sealing frame 3, the inlet pipe 9 of the vacuum pump 18 is communicated to the sealing frame 3 through the suction pipe 19, the normal temperature air in the sealing frame 3 is removed by the vacuum pump 18, then the nitrogen in the nitrogen tank 12 is pumped into and filled by the gas pump II 11, then the sealing frame 3 is heated by the heater 5, so that the lithium battery in the sealing frame 3 can be activated in the environment of appropriate high temperature inert gas; The edge of the door plate 2 is provided with a sealing gasket, the contact surface of the outer frame 1 and the sealing frame 3 is also provided with a sealing gasket, when the door plate 2 is closed on the sealing frame 3, the outer frame 1 and the sealing frame 3 are sealed and separated into two compartments.

[0024] As shown in Figure 1 and Figure 3 , the heating element includes gas pump I 4, heater 5, air guide frame 6, communication pipe I 7, air inlet pipe 9, valve I 10 and air outlet pipe 91, the top of the outer frame 1 is provided with a gas pump I 4, the top of the outer frame 1 is also provided with a heater 5, the gas outlet of the gas pump I 4 is communicated with the heater 5 through the pipeline, the top of the outer frame 1 is provided with an air guide frame 6, the heater 5 is communicated with the air guide frame 6 through the communication pipe I 7, the air guide frame 6 is communicated with the compartment between the outer frame 1 and the sealing frame 3 through the air inlet pipe 9, and the top of the outer frame 1 is provided with an air outlet pipe 91; The air guide frame 6 is provided with filter cotton 8, which is used for filtering the gas pumped into the air guide frame 6 from the outside.

[0025] As shown in Figure 1 , Figure 3 and Figure 5As shown, the left side wall of the sealed frame 3 is connected to the outside through the air pipe 14 penetrating the outer frame 1, the air pipe 14 is provided with the valve Ⅱ 141, and the air pipe 14 is internally provided with the electric fan Ⅰ 142 for inward air suction.

[0026] As shown in Figure 1 , Figure 4 and Figure 5 , the right side wall of the sealed frame 3 is connected to the outside through the exhaust pipe 15 penetrating the outer frame 1, the exhaust pipe 15 is provided with the valve Ⅲ 151, and the exhaust pipe 14 is internally provided with the electric fan Ⅱ 152 for outward air exhaust.

[0027] As shown in Figure 1 , the nitrogen tank 12 is provided with the inflation valve 16 at the top, which is used for supplementing the nitrogen in the nitrogen tank 12 and stabilizing the air pressure inside the nitrogen tank 12.

[0028] When the lithium battery is high-temperature activated by using the device, the valve Ⅰ 10 and the valve Ⅱ 141 are closed first, the door plate 2 is rotated and opened from the sealing frame 3, and the lithium battery to be activated is placed in the sealing frame 3. After the lithium battery is placed in the sealing frame 3, the door plate 2 is sealed and closed back to the sealing frame 3, and then the vacuum pump 18 is started. The vacuum pump 18 draws out the normal air in the sealing frame 3 through the air suction pipe 19, so that the sealing frame 3 is in a state close to vacuum. Then the vacuum pump 18 is closed and the air pump Ⅱ 11 is started. The air pump Ⅱ 11 draws the nitrogen in the nitrogen tank 12 into the communication pipe Ⅱ 13 through the connecting pipe 17. The nitrogen flowing through the communication pipe Ⅱ 13 is introduced into the sealing frame 3. When the nitrogen fills the sealing frame 3, the air pump Ⅱ 11 is closed and the air pump Ⅰ 4 is started. The air pump Ⅰ 4 draws the gas into the heater 5 and heats it, and then the hot gas is introduced into the air guide frame 6 through the communication pipe Ⅰ 7. The hot gas in the air guide frame 6 is filtered by the filter cotton 8 and then introduced into the air inlet pipe 9. When the hot gas is continuously introduced into the space between the outer frame 1 and the sealing frame 3 through the air inlet pipe 9, the air in the space between the outer frame 1 and the sealing frame 3 is continuously replaced by the hot gas from the air outlet pipe 91. When the hot gas continuously fills the space between the outer frame 1 and the sealing frame 3, the hot gas can heat the sealing frame 3, so that the nitrogen in the sealing frame 3 can be heated to the temperature of the lithium battery activation treatment. The valve Ⅰ 10 and the air outlet pipe 91 are closed, so that the lithium battery placed in the sealing frame 3 can be high-temperature activated in a constant temperature and inert atmosphere. When the lithium battery is activated, the valve Ⅱ 141 and the valve Ⅲ 151 are opened at the same time, and the electric fan Ⅰ 142 and the electric fan Ⅱ 152 are started. The electric fan Ⅰ 142 draws the external air into the sealing frame 3 through the air pipe 14, and the electric fan Ⅱ 152 discharges the nitrogen in the sealing frame 3 through the exhaust pipe 15. Thus, the normal air is replaced by the activated nitrogen. Finally, the door plate 2 is opened to take out the lithium battery activated in the sealing frame 3.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that changes can be made in these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-temperature treatment device for lithium battery production, comprising an outer frame (1), a bearing plate (1001), a door plate (2) and a sealing frame (3), the sealing frame (3) is installed in the outer frame (1) through the bearing plate (1001), the outer frame (1) and the sealing frame (3) are sealed and separated, the sealing frame (3) is used for high-temperature activation treatment of lithium batteries, and the door plate (2) is symmetrically hinged at the opening of the front side of the sealing frame (3), characterized in that, It also includes heating, air pump II (11), nitrogen tank (12), communication pipe II (13), connecting pipe (17), vacuum pump (18) and suction pipe (19), the top of the outer frame (1) is provided with heating, the top of the outer frame (1) is provided with air pump II (11) on the front side, the top of the outer frame (1) is provided with nitrogen tank (12), the air inlet of the air pump II (11) is communicated to the upper side of the nitrogen tank (12) through the connecting pipe (17), the air outlet of the air pump II (11) is communicated to the sealed frame (3) through the communication pipe II (13) penetrating the rear of the outer frame (1), one of the front side of the door plate (2) is provided with a vacuum pump (18), the air inlet pipe (9) of the vacuum pump (18) is communicated to the sealed frame (3) through the suction pipe (19).

2. The high temperature processing apparatus for lithium battery production according to claim 1, characterized in that, The edge of the door plate (2) is provided with a sealing gasket, and the contact surface of the outer frame (1) and the sealing frame (3) is also provided with a sealing gasket.

3. The high temperature processing apparatus for lithium battery production according to claim 2, characterized in that, The heating element includes air pump I (4), heater (5), air guide frame (6), communication pipe I (7), air inlet pipe (9), valve I (10) and air outlet pipe (91), the top of the outer frame (1) is provided with air pump I (4), the top of the outer frame (1) is provided with heater (5), the air outlet of the air pump I (4) is communicated with the heater (5), the top of the outer frame (1) is provided with air guide frame (6), the heater (5) is communicated with the air guide frame (6) through the communication pipe I (7), the air guide frame (6) is communicated with the outer frame (1) and the sealed frame (3) through the air inlet pipe (9), and the top of the outer frame (1) is provided with air outlet pipe (91).

4. The high temperature processing apparatus for lithium battery production according to claim 3, characterized in that, The air guide frame (6) is provided with filter cotton (8).

5. The high temperature processing apparatus for lithium battery production according to claim 4, characterized in that, It also includes air pipe (14), valve II (141) and electric fan I (142), the left side wall of the sealed frame (3) is communicated to the outside through the air pipe (14) penetrating the outer frame (1), the air pipe (14) is provided with valve II (141), and the electric fan I (142) is installed in the air pipe (14) to suck air inward.

6. The high temperature processing apparatus for lithium battery production according to claim 5, characterized in that, It also includes exhaust pipe (15), valve III (151) and electric fan II (152), the right side wall of the sealed frame (3) is communicated to the outside through the exhaust pipe (15) penetrating the outer frame (1), the exhaust pipe (15) is provided with valve III (151), and the electric fan II (152) is installed in the air pipe (14) to exhaust air outward.

7. The high temperature processing apparatus for lithium battery production according to claim 6, characterized in that, The top of the nitrogen tank (12) is provided with a charging valve (16), and the charging valve (16) is used for supplementing the nitrogen in the nitrogen tank (12).

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