A drying equipment

Abstract

The present invention discloses a drying device, comprising a vacuum liner, wherein the vacuum liner is provided with a first liquid input port, a first liquid output port, a gas input port, and a vacuum port; a liquid heating tank, a liquid cooling tank, a gas input device, and a vacuum device are provided outside the vacuum liner, wherein the liquid heating tank and the liquid cooling tank are respectively connected to the first liquid input port, the gas input device is connected to the gas input port, and the vacuum device is connected to the vacuum port; a support frame is provided inside the vacuum liner, wherein the inside of the support frame is hollow, and a second liquid input port and a second liquid output port are provided on the support frame, wherein the second liquid input port is connected to the first liquid input port, and the second liquid output port is connected to the first liquid output port. The structural design of the present invention is reasonable, and (1) the drying efficiency of the battery core is effectively improved; (2) the liquid level and hydraulic pressure balance between different tanks is achieved; and (3) a good sealing effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of battery core drying, and in particular to a drying device. Background Art

[0002] A cell refers to a single electrochemical cell containing positive and negative electrodes, which is generally not used directly. It is different from a battery which contains a protection circuit and a casing and can be used directly.

[0003] The composition of lithium-ion secondary rechargeable batteries is as follows: battery cell + protection circuit board. The battery cell is the power storage part of the rechargeable battery after the protection circuit board is removed. The quality of the battery cell directly determines the quality of the rechargeable battery.

[0004] In the production process of lithium-ion batteries, the negative electrode is generally a water-based slurry, and the positive electrode is generally an oil-based slurry. After the slurry is coated, the battery pole piece is dried for the first time. The main purpose of this step is to remove the solvent in the slurry and form a battery pole piece with a microscopic porous structure. After this drying step, a high amount of moisture still remains in the pole piece, and in the subsequent pole piece processing process, due to the porous high specific surface area characteristics, the pole piece easily absorbs moisture from the ambient air. Therefore, how to remove the residual moisture in the battery pole piece is an important issue that needs to be solved.

[0005] In order to remove the residual moisture on the battery pole pieces of the battery cell, the prior art usually puts the battery cell into a drying device for drying. However, the problem with the prior drying device is that most of the prior devices dry the residual moisture on the battery pole pieces by hot air convection in the drying chamber, and then cool the battery pole pieces by blowing cold air. However, the problem with this technical method is that the drying speed of the residual moisture on the battery pole pieces of the battery cell and the cooling speed of the battery cell after drying are relatively slow, that is, the drying speed is generally about 8 to 12 hours, and the cooling speed is generally 4 to 6 hours, so the drying efficiency is low. Summary of the invention

[0006] The object of the present invention is to provide a drying device to solve the technical problem that the existing drying device has low efficiency in drying battery cells.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a drying equipment, including a vacuum inner tank, on which a first liquid input port, a first liquid output port, a gas input port, and a vacuum port are provided; the outside of the vacuum inner tank is provided with a liquid heating tank, a liquid cooling tank, a gas input device, and a vacuum device, the liquid heating tank and the liquid cooling tank are respectively connected to the first liquid input port, the gas input device is connected to the gas input port, and the vacuum device is connected to the vacuum port; the interior of the vacuum inner tank is provided with a support frame, the interior of the support frame is hollow, and the support frame is provided with a second liquid input port and a second liquid output port, the second liquid input port is connected to the first liquid input port, and the second liquid output port is connected to the first liquid output port.

[0008] Furthermore, the support frame includes a left side plate, a right side plate, and a support plate, and a plurality of the support plates are arranged between the left side plate and the right side plate, and the plurality of the support plates are distributed in sequence along the up and down directions; the interior of the support plate is hollow, and the interiors of the plurality of the support plates are interconnected, and the second liquid input port and the second liquid output port are respectively connected to the interior of the support plate.

[0009] Furthermore, the inner sides of the left plate and the right plate are respectively provided with a plurality of mounting slots, the plurality of mounting slots of the left plate are sequentially distributed along the up-down direction and are interconnected, and the plurality of mounting slots of the right plate are sequentially distributed along the up-down direction and are interconnected; the left and right ends of the support plate are respectively installed in the mounting slots of the left plate and the right plate, the left and right ends of the support plate are respectively provided with openings, a baffle is provided on the upper side of one of the left and right ends of the support plate, and a baffle is provided on the lower side of the other end.

[0010] Furthermore, the second liquid input port is located at the bottom end of one of the left side plate and the right side plate and is connected to the mounting slot at that position, and the second liquid output port is located at the top end of the other one of the left side plate and the right side plate and is connected to the mounting slot at that position.

[0011] Furthermore, the gas input device is a nitrogen input device, an air inlet pipe is connected between the nitrogen input device and the gas input port, and a nitrogen valve is provided on the air inlet pipe; an exhaust pipe is connected between the vacuum pumping device and the vacuum pumping port, and a vacuum valve is provided on the exhaust pipe.

[0012] Furthermore, the support frame is an aluminum support frame, a heating tube is provided in the liquid heating tank, a pressure relief valve is provided on the top of the liquid heating tank, and a cooling coil is provided in the liquid cooling tank.

[0013] Furthermore, the liquid heating tank and the liquid cooling tank are respectively connected to the first liquid output port; a neutralizing tank is also provided on the outside of the vacuum liner, and a reflux pipe and a replenishing pipe are respectively connected between the neutralizing tank and the liquid heating tank, and a reflux pipe and a replenishing pipe are respectively connected between the neutralizing tank and the liquid cooling tank, and control valves are respectively provided on the reflux pipe and the replenishing pipe.

[0014] Furthermore, the liquid cooling tank is connected to the first liquid output port via a first pipe, the liquid heating tank is connected to the first liquid output port via a second pipe, and control valves are respectively provided on the first pipe and the second pipe; the liquid cooling tank is connected to the first liquid input port via a third pipe, the liquid heating tank is connected to the first liquid input port via a fourth pipe, and control valves and circulating pumps are provided on the third pipe and the fourth pipe.

[0015] Furthermore, the drying equipment also includes a fifth pipeline and a sixth pipeline, and the fifth pipeline and the sixth pipeline are respectively provided with three ports; two ports of the fifth pipeline are respectively connected to the first pipeline and the second pipeline, and the other port of the fifth pipeline is sealed to the first liquid output port through a sealing device; two ports of the sixth pipeline are respectively connected to the third pipeline and the fourth pipeline, and the other port of the sixth pipeline is sealed to the first liquid input port through a sealing device.

[0016] Further, the sealing device includes a sleeve, a flange, and an elastic colloid, the sleeve extends in the front-to-back direction, and the shape of the internal channel of the sleeve is a truncated cone with a small front end and a large rear end; the elastic colloid extends in the front-to-back direction, and the external shape of the elastic colloid is a truncated cone with a small front end and a large rear end, the rear end of the outer part of the elastic colloid is larger than the front end of the internal channel of the sleeve, and the interior of the elastic colloid is provided with a through hole that passes through in the front-to-back direction; the elastic colloid is installed in the internal channel of the sleeve, the rear end of the sleeve is installed with the flange, the flange is provided with a through hole, the front end of the sleeve is fixed to the rear wall of the vacuum liner, the port of the fifth pipe or the sixth pipe passes through the through hole on the flange and the through hole of the elastic colloid in sequence, and is connected to the first liquid output port or the first liquid input port, and the flange presses the elastic colloid forward.

[0017] In summary, the technical solution of the present invention has the following beneficial effects: the structural design of the present invention is reasonable, and beneficial effect 1: (1) the liquid heating tank and the liquid cooling tank are respectively connected to the first liquid input port, and a support frame is provided inside the vacuum liner, the interior of the support frame is hollow, and a second liquid input port and a second liquid output port are provided on the support frame, the second liquid input port is connected to the first liquid input port, and the second liquid output port is connected to the first liquid output port; (2) when it is necessary to dry the battery cell, the battery cell is first placed on the support frame, and the liquid heating tank transports the heated liquid from the first liquid input port and the second liquid input port to the inside of the support frame in turn, so that the support frame is quickly heated, and the heated support frame can dry the battery cell The drying process is carried out. Since it is a contact heat conduction method, the speed of the support frame being heated by the liquid and the high temperature of the support frame drying the battery core are greatly improved, so the drying time of the battery core can be shortened to about 30 minutes; (3) When it is necessary to cool the dried battery core, the liquid heating tank is stopped first, and the liquid cooling tank transports the cooled liquid from the first liquid input port and the second liquid input port to the inside of the support frame in sequence, so that the support frame is quickly cooled. The cooled support frame can cool the battery core. Since it is a contact cold conduction method, the speed of the support frame being cooled by the liquid and the low temperature of the support frame cooling the battery core are greatly improved, so the cooling time of the battery core can be shortened to about 30 minutes. From the above analysis, it can be seen that since the drying speed of the battery core and the cooling speed after drying are greatly improved, the drying efficiency of the battery core is effectively improved.

[0018] Beneficial effect 2: (1) The liquid heating tank and the liquid cooling tank are respectively connected to the first liquid output port, thereby realizing liquid recycling and achieving complete sealing; (2) A neutralizing tank is also provided on the outside of the vacuum liner, and a reflux pipe and a replenishing pipe are respectively connected between the neutralizing tank and the liquid heating tank, and a reflux pipe and a replenishing pipe are respectively connected between the neutralizing tank and the liquid cooling tank. The reflux pipe and the replenishing pipe are respectively provided with control valves, so that when the liquid level or hydraulic pressure in the liquid heating tank and the liquid cooling tank reaches a certain level, the liquid can be returned to the neutralizing tank through the reflux pipe, thereby achieving the purpose of pressure relief. When the liquid level or hydraulic pressure in the liquid heating tank and the liquid cooling tank is too low, the liquid in the neutralizing tank can be replenished into the liquid heating tank and the liquid cooling tank through the replenishing pipe, thereby achieving liquid level and hydraulic balance between different tanks.

[0019] Beneficial effect 3: The sealing device includes a sleeve, a flange, and an elastic colloid. The sleeve extends in the front-to-back direction, and the shape of the internal channel of the sleeve is a truncated cone with a small front end and a large rear end; the elastic colloid extends in the front-to-back direction, and the external shape of the elastic colloid is a truncated cone with a small front end and a large rear end. The rear end of the outer part of the elastic colloid is larger than the front end of the internal channel of the sleeve, and the interior of the elastic colloid is provided with a through hole that penetrates in the front-to-back direction; the elastic colloid is installed in the internal channel of the sleeve, and a flange is installed at the rear end of the sleeve, and a through hole is provided on the flange. The front end of the sleeve is fixed to the rear wall of the vacuum liner, and the fifth pipeline or the sixth pipeline is provided with a through hole. The port of the pipeline passes through the through hole on the flange and the through hole of the elastic colloid in sequence, and is connected to the first liquid output port or the first liquid input port, and the flange presses the elastic colloid forward; therefore, in the process of the flange pressing the elastic colloid forward, the more the elastic colloid moves toward the front end, the greater the extrusion force on the elastic colloid will be, and the extrusion force on its internal through hole will also be correspondingly greater, so that the fifth pipeline or the sixth pipeline and the through hole of the elastic colloid become closer and closer, thereby forming a good sealing effect, preventing vacuum leakage inside the vacuum liner, and thus improving the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0021] Figure 2 It is a front structural schematic diagram of the present invention;

[0022] Figure 3 is a front view structural schematic diagram of the present invention when the support frame is removed;

[0023] Figure 4 is a rear structural schematic diagram of the support frame of the present invention;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the left side plate of the support frame of the present invention;

[0025] Figure 6 is a schematic diagram of the three-dimensional structure of the support frame of the present invention when the left side plate is removed;

[0026] Figure 7 yes Figure 6 A partial enlarged picture of the middle A area;

[0027] Figure 8 is a schematic diagram of the three-dimensional structure of the support plate of the support frame of the present invention;

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the first half of the present invention;

[0029] Fig.10 It is a three-dimensional structural schematic diagram of the second half of the present invention;

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the heating tube of the present invention;

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the cooling coil of the present invention;

[0032] Fig.13 is a schematic diagram of the three-dimensional structure of the sealing device of the present invention from a first viewing angle;

[0033] Fig.14 is a schematic diagram of the three-dimensional structure of the sealing device of the present invention from a second viewing angle;

[0034] Fig.15 It is a three-dimensional structural schematic diagram of a sleeve of the sealing device of the present invention;

[0035] Fig.16 It is a schematic diagram of the three-dimensional structure of the elastic colloid of the sealing device of the present invention;

[0036] 1-vacuum liner, 101-first liquid input port, 102-first liquid output port, 103-gas input port, 104-vacuum port; 2-liquid heating tank, 201-heating pipe, 202-pressure relief valve; 3-liquid cooling tank, 301-cooling coil; 4-support frame, 401-second liquid input port, 402-second liquid output port, 403-left side plate, 404-right side plate, 405-support plate, 406-installation slot, 407-opening, 408-baffle; 5-inlet pipe, 501-nitrogen valve; 6-exhaust pipe, 601-vacuum valve; 7-neutralizing tank, 8-reflux pipe, 9-supplementing pipe, 10-control valve, 11-first pipeline, 12-second pipeline, 13-third pipeline, 14-fourth pipeline, 15-circulation pump, 16-fifth pipeline, 17-sixth pipeline; 18-sealing device, 181-sleeve, 182-flange, 183-elastic colloid. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0038] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 2For observation, the left side of the observer is set as right, the right side of the observer is set as left, the front of the observer is set as back, the rear of the observer is set as front, the top of the observer is set as top, and the bottom of the observer is set as bottom. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, which is only for the convenience of clearly describing the present invention, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarifying or simplifying the description, and cannot be understood as indicating or implying relative importance or quantity.

[0039] See also Figure 1 , Figure 2 , Figure 3 This embodiment provides a drying device, including a vacuum liner 1, on which a first liquid input port 101, a first liquid output port 102, a gas input port 103, and a vacuum port 104 are provided. The purpose of such a configuration is to enable the exchange of substances and energy between the inside and outside of the vacuum liner. A liquid heating tank 2, a liquid cooling tank 3, a gas input device, and a vacuum device are provided outside the vacuum liner 1. The liquid heating tank 2 and the liquid cooling tank 3 are respectively connected to the first liquid input port 101. The purpose of such a configuration is to enable the liquid in the liquid heating tank and the liquid cooling tank to reach the inside of the vacuum liner. The gas input device is connected to the gas input port 103, and the vacuum device is connected to the vacuum port 104. The purpose of this arrangement is: the gas is input into the interior of the vacuum liner through the gas input device, so that the gas is mixed with the water vapor dried on the battery pole piece in the vacuum liner, and then the mixed water vapor and the filled gas are continuously extracted out of the vacuum liner through the vacuum device to improve the drying effect; and the gas input of the gas input device and the gas extraction of the vacuum device can maintain the air pressure balance of the vacuum liner while the water dried in the vacuum liner is extracted. The interior of the vacuum liner 1 is provided with a support frame 4, and its function is: the support frame can be used to place the battery cells that need to be dried. The interior of the support frame 4 is hollow, and its function is: to enable the liquid to flow inside the support frame, thereby transferring the energy for heating or the energy for cooling by direct conduction, thereby improving the conduction efficiency. The support frame 4 is provided with a second liquid input port 401 and a second liquid output port 402. The second liquid input port 401 is connected to the first liquid input port 101, and its function is to allow liquid to enter the interior of the support frame through the first liquid input port and the second liquid input port. The second liquid output port 402 is connected to the first liquid output port 102, and its function is to allow liquid inside the support frame to be discharged through the second liquid output port and the first liquid output port.

[0040] It should be noted that the liquid described in the text can be water or other liquids with the same function. However, due to the higher specific heat capacity of water, water is preferably used as the liquid described in the text.

[0041] The beneficial effects of this part are as follows: (1) the liquid heating tank and the liquid cooling tank are respectively connected to the first liquid input port, a support frame is provided inside the vacuum liner, the interior of the support frame is hollow, a second liquid input port and a second liquid output port are provided on the support frame, the second liquid input port is connected to the first liquid input port, and the second liquid output port is connected to the first liquid output port; (2) when it is necessary to dry the battery cell, the battery cell is first placed on the support frame, and the liquid heating tank transports the heated liquid from the first liquid input port and the second liquid input port to the interior of the support frame in sequence, so that the support frame is quickly heated, and the heated support frame can dry the battery cell. Since it is a contact heat conduction method, The support frame is heated by liquid and the speed at which the high temperature of the support frame dries the battery cell is greatly improved, so the drying time of the battery cell can be shortened to about 30 minutes; (3) When the dried battery cell needs to be cooled, the liquid heating tank is stopped first, and the liquid cooling tank transports the cooled liquid from the first liquid input port and the second liquid input port to the inside of the support frame in sequence, so that the support frame is quickly cooled. The cooled support frame can cool the battery cell. Since it is a contact cold conduction method, the speed at which the support frame is cooled by liquid and the speed at which the low temperature of the support frame cools the battery cell is greatly improved, so the cooling time of the battery cell can be shortened to about 30 minutes. From the above analysis, it can be seen that since the drying speed of the battery cell and the cooling speed after drying are greatly improved, the drying efficiency of the battery cell is effectively improved.

[0042] Specifically, see Figure 3 , Figure 4 The support frame 4 includes a left side plate 403, a right side plate 404, and a support plate 405. A plurality of support plates 405 are arranged between the left side plate 403 and the right side plate 404. The plurality of support plates 405 are sequentially distributed along the up-down direction, and their function is to facilitate different support plates to support the battery cells respectively. The interior of the support plate 405 is hollow, and the interiors of the plurality of support plates 405 are interconnected, and their function is to facilitate the circulation of liquid between different support plates. The second liquid input port 401 and the second liquid output port 402 are respectively connected to the interior of the support plate 405, and their function is to enable liquid to enter and exit the interior of the support plate.

[0043] Specifically, see Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8, the inner side surfaces of the left plate 403 and the right plate 404 are respectively provided with a plurality of mounting slots 406, the plurality of mounting slots 406 of the left plate 403 are sequentially distributed and interconnected along the up-down direction, and the plurality of mounting slots 406 of the right plate 404 are sequentially distributed and interconnected along the up-down direction, and the function is to enable the liquid to flow up and down between the mounting slots. The left and right ends of the support plate 405 are respectively installed in the mounting slots 406 of the left plate 403 and the right plate 404, and the left and right ends of the support plate 405 are respectively provided with openings 407, and the function is that the openings enable the liquid to flow between the mounting slots and the inside of the support plate. A baffle 408 is provided on the upper side of one of the left and right ends of the support plate 405, and a baffle 408 is provided on the lower side of the other end, and the function is to set the flow direction of the liquid, so that the flow trajectory of the liquid between different mounting slots and different support plates is a wave shape of unidirectional movement from bottom to top, thereby improving the controllability of the liquid movement trajectory and thus improving the efficiency.

[0044] Specifically, see Figure 4 The second liquid input port 401 is located at the bottom end of one of the left plate 403 and the right plate 404 and is connected to the mounting slot 406 at that position. The second liquid output port 402 is located at the top end of the other of the left plate 403 and the right plate 404 and is connected to the mounting slot 406 at that position. Function: Due to the effect of gravity, the liquid can fill each mounting slot and the interior of the support plate, thereby improving the drying efficiency.

[0045] Specifically, see Fig. 9 The gas input device is a nitrogen input device, and its function is that the nitrogen inputted by the nitrogen input device is an inert gas, which is more stable than the chemical properties of air and improves the drying effect. An air inlet pipe 5 is connected between the nitrogen input device and the gas input port 103, and a nitrogen valve 501 is provided on the air inlet pipe 5; an exhaust pipe 6 is connected between the vacuum device and the vacuum port 104, and a vacuum valve 601 is provided on the exhaust pipe 6.

[0046] Specifically, see Figure 1 , Fig.11 , Fig.12 The support frame 4 is an aluminum support frame. Its function is that aluminum has good thermal conductivity and can improve the conduction efficiency. A heating pipe 201 is provided in the liquid heating tank 2. A pressure relief valve 202 is provided on the top of the liquid heating tank 2. Its function is that the pressure relief valve can relieve the pressure when the air pressure generated by the liquid heating tank during the heating process is too high. A cooling coil 301 is provided in the liquid cooling tank 3. Its function is that the cooling coil is used to connect to an external chiller to cool down the liquid.

[0047] Specifically, see Figure 1 , Fig.10The liquid heating tank 2 and the liquid cooling tank 3 are respectively connected to the first liquid output port 102; a neutralizing tank 7 is also provided on the outside of the vacuum liner 1, and a reflux pipe 8 and a replenishing pipe 9 are respectively connected between the neutralizing tank 7 and the liquid heating tank 2, and a reflux pipe 8 and a replenishing pipe 9 are respectively connected between the neutralizing tank 7 and the liquid cooling tank 3, and a control valve 10 is respectively provided on the reflux pipe 8 and the replenishing pipe 9.

[0048] The beneficial effects of this part are as follows: (1) the liquid heating tank and the liquid cooling tank are respectively connected to the first liquid output port, thereby realizing liquid recycling and achieving complete sealing; (2) a neutralizing tank is also arranged outside the vacuum liner, a reflux pipe and a replenishing pipe are respectively connected between the neutralizing tank and the liquid heating tank, and a reflux pipe and a replenishing pipe are respectively connected between the neutralizing tank and the liquid cooling tank, and a control valve is respectively arranged on the reflux pipe and the replenishing pipe, so that when the liquid level or hydraulic pressure in the liquid heating tank and the liquid cooling tank reaches a certain level, the liquid can be returned to the neutralizing tank through the reflux pipe, thereby achieving the purpose of pressure relief, and when the liquid level or hydraulic pressure in the liquid heating tank and the liquid cooling tank is too low, the liquid in the neutralizing tank can be replenished into the liquid heating tank and the liquid cooling tank through the replenishing pipe, thereby achieving liquid level and hydraulic balance between different tanks.

[0049] Specifically, see Figure 1 The liquid cooling tank 3 is connected to the first liquid output port 102 through a first pipe 11, the liquid heating tank 2 is connected to the first liquid output port 102 through a second pipe 12, and a control valve 10 is respectively provided on the first pipe 11 and the second pipe 12; the liquid cooling tank 3 is connected to the first liquid input port 101 through a third pipe 13, the liquid heating tank 2 is connected to the first liquid input port 101 through a fourth pipe 14, and a control valve 10 and a circulation pump 15 are provided on the third pipe 13 and the fourth pipe 14, and their functions are as follows: the control valve facilitates the automatic control of the liquid flow, and the circulation pump provides the liquid driving force.

[0050] Specifically, see Figure 1 , Fig. 9 The drying equipment also includes a fifth pipeline 16 and a sixth pipeline 17, and the fifth pipeline 16 and the sixth pipeline 17 are respectively provided with three ports; two ports of the fifth pipeline 16 are respectively connected to the first pipeline 11 and the second pipeline 12, and the other port of the fifth pipeline 16 is sealed and connected to the first liquid output port 102 through a sealing device 18; two ports of the sixth pipeline 17 are respectively connected to the third pipeline 13 and the fourth pipeline 14, and the other port of the sixth pipeline 17 is sealed and connected to the first liquid input port 101 through a sealing device 18.

[0051] Specifically, see Fig.13 , Fig.14 , Fig.15 , Fig.16 The sealing device 18 includes a sleeve 181, a flange 182, and an elastic colloid 183. Specifically, the elastic colloid 183 is preferably a U-type elastic colloid or a silicone elastic colloid. The sleeve 181 extends in the front-to-back direction, and the shape of the internal channel of the sleeve 181 is a truncated cone with a small front end and a large rear end; the elastic colloid 183 extends in the front-to-back direction, and the external shape of the elastic colloid 183 is a truncated cone with a small front end and a large rear end. The rear end of the elastic colloid 183 is larger than the front end of the internal channel of the sleeve 181, and the interior of the elastic colloid 183 is provided with a through hole that penetrates in the front-to-back direction; the elastic colloid 183 is installed in the internal channel of the sleeve 181, and a flange 182 is installed at the rear end of the sleeve 181, and the flange 182 is provided with a through hole. The front end of the sleeve 181 is fixed to the rear wall of the vacuum liner 1, and the port of the fifth pipeline 16 or the sixth pipeline 17 passes through the through hole on the flange 182 and the through hole of the elastic colloid 183 in sequence forward and is connected to the first liquid output port 102 or the first liquid input port 101, and the flange 182 presses the elastic colloid 183 forward. The effect of such a setting is that, in the process of the flange pressing the elastic colloid forward, the further the elastic colloid moves toward the front end, the greater the extrusion pressure on the elastic colloid will be, and the extrusion pressure on its internal through hole will also be correspondingly greater, so that the fifth pipe or the sixth pipe and the through hole of the elastic colloid become increasingly tight, thereby forming a good sealing effect, preventing vacuum leakage inside the vacuum liner, and thereby improving the drying effect.

[0052] Preferably, see Figure 1 , Figure 2 The front of the vacuum liner 1 is provided with a first front opening, and the function of the first front opening is to facilitate the placement of the support frame 4 into the vacuum liner 1 and to facilitate the quick placement of the battery cell onto the support frame 4. In order to ensure the internal sealing of the vacuum liner 1, the vacuum liner 1 is installed inside the casing, and the front of the casing is provided with a second front opening, and an openable cover is provided on the second front opening, and a sealing ring is provided on the inner edge of the cover. When the cover covers the second front opening, the inner side of the cover also covers the first front opening at the same time, so that the sealing ring is sealed and connected to the edge of the first front opening, thereby ensuring the internal sealing of the vacuum liner 1.

[0053] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A drying device, comprising a vacuum liner (1), characterized in that: The vacuum liner (1) is provided with a first liquid input port (101), a first liquid output port (102), a gas input port (103), and a vacuum pumping port (104); the outside of the vacuum liner (1) is provided with a liquid heating tank (2), a liquid cooling tank (3), a gas input device, and a vacuum pumping device; the liquid heating tank (2) and the liquid cooling tank (3) are respectively connected to the first liquid input port (101); the gas input device is connected to the gas input port (103); and the vacuum pumping device is connected to the vacuum pumping port (104); the inside of the vacuum liner (1) is provided with a support frame (4); the inside of the support frame (4) is hollow; the support frame (4) is provided with a second liquid input port (401) and a second liquid output port (402); the second liquid input port (401) is connected to the first liquid input port (101); and the second liquid output port (402) is connected to the first liquid output port (102); The support frame (4) comprises a left side plate (403), a right side plate (404), and a support plate (405); a plurality of the support plates (405) are arranged between the left side plate (403) and the right side plate (404); the plurality of the support plates (405) are sequentially distributed along the up-down direction; the interior of the support plate (405) is hollow; the interiors of the plurality of the support plates (405) are interconnected; and the second liquid input port (401) and the second liquid output port (402) are respectively connected to the interior of the support plate (405); The inner side surfaces of the left side plate (403) and the right side plate (404) are respectively provided with a plurality of mounting notches (406); the plurality of mounting notches (406) of the left side plate (403) are sequentially distributed along the up-down direction and are interconnected; the plurality of mounting notches (406) of the right side plate (404) are sequentially distributed along the up-down direction and are interconnected; the left and right ends of the support plate (405) are respectively installed in the mounting notches (406) of the left side plate (403) and the right side plate (404); the left and right ends of the support plate (405) are respectively provided with openings (407); a baffle (408) is provided on the upper side of one of the left and right ends of the support plate (405), and a baffle (408) is provided on the lower side of the other end; The second liquid input port (401) is located at the bottom end of one of the left plate (403) and the right plate (404) and is in communication with the mounting slot (406) at that position, and the second liquid output port (402) is located at the top end of the other of the left plate (403) and the right plate (404) and is in communication with the mounting slot (406) at that position; The liquid heating tank (2) and the liquid cooling tank (3) are respectively connected to the first liquid output port (102); a neutralizing tank (7) is further provided outside the vacuum liner (1); a reflux pipe (8) and a replenishing pipe (9) are respectively connected between the neutralizing tank (7) and the liquid heating tank (2); a reflux pipe (8) and a replenishing pipe (9) are respectively connected between the neutralizing tank (7) and the liquid cooling tank (3); and control valves (10) are respectively provided on the reflux pipe (8) and the replenishing pipe (9); The liquid cooling tank (3) is connected to the first liquid output port (102) via a first pipe (11), the liquid heating tank (2) is connected to the first liquid output port (102) via a second pipe (12), and the first pipe (11) and the second pipe (12) are respectively provided with a control valve (10); the liquid cooling tank (3) is connected to the first liquid input port (101) via a third pipe (13), the liquid heating tank (2) is connected to the first liquid input port (101) via a fourth pipe (14), and the third pipe (13) and the fourth pipe (14) are both provided with a control valve (10) and a circulation pump (15); The drying device further comprises a fifth pipe (16) and a sixth pipe (17), wherein the fifth pipe (16) and the sixth pipe (17) are respectively provided with three ports; two of the ports of the fifth pipe (16) are respectively connected to the first pipe (11) and the second pipe (12), and the other port of the fifth pipe (16) is sealedly connected to the first liquid output port (102) via a sealing device (18); two of the ports of the sixth pipe (17) are respectively connected to the third pipe (13) and the fourth pipe (14), and the other port of the sixth pipe (17) is sealedly connected to the first liquid input port (101) via a sealing device (18).

2. A drying device according to claim 1, characterized in that: The gas input device is a nitrogen input device, an air inlet pipe (5) is connected between the nitrogen input device and the gas input port (103), and a nitrogen valve (501) is provided on the air inlet pipe (5); an exhaust pipe (6) is connected between the vacuum pumping device and the vacuum pumping port (104), and a vacuum valve (601) is provided on the exhaust pipe (6).

3. A drying device according to claim 1, characterized in that: The support frame (4) is an aluminum support frame, a heating pipe (201) is provided in the liquid heating tank (2), and a pressure relief valve (202) is provided on the top of the liquid heating tank (2); and a cooling coil (301) is provided in the liquid cooling tank (3).

4. A drying device according to claim 1, characterized in that: The sealing device (18) comprises a sleeve (181), a flange (182), and an elastic colloid (183); the sleeve (181) extends in the front-to-back direction; the shape of the internal channel of the sleeve (181) is a truncated cone with a small front end and a large rear end; the elastic colloid (183) extends in the front-to-back direction; the external shape of the elastic colloid (183) is a truncated cone with a small front end and a large rear end; the rear end of the outer part of the elastic colloid (183) is larger than the front end of the internal channel of the sleeve (181); and a through hole is provided inside the elastic colloid (183) that penetrates in the front-to-back direction; the elastic colloid (183) ) is installed in the internal channel of the sleeve (181), the flange (182) is installed at the rear end of the sleeve (181), the flange (182) is provided with a through hole, the front end of the sleeve (181) is fixed to the rear wall of the vacuum liner (1), the port of the fifth pipe (16) or the sixth pipe (17) passes through the through hole on the flange (182) and the through hole of the elastic colloid (183) in sequence forward, and is connected to the first liquid output port (102) or the first liquid input port (101), and the flange (182) presses the elastic colloid (183) forward.

Images