Lithium ion battery drying device

Abstract

The utility model provides a lithium ion battery drying device which comprises a drying mechanism, the drying mechanism comprises a drying box body provided with a plurality of drying units, the drying box body is used for providing a containing space for drying a lithium ion battery, and the drying mechanism is provided with a first inlet and a first outlet; a circulation space for circulation of a drying medium is formed between any two adjacent drying units; the medium supply mechanism is provided with a first storage cavity used for storing a drying medium, the first storage cavity communicates with an input pipeline and an output pipeline, the first end of the input pipeline communicates with the first inlet, the first end of the output pipeline communicates with the first outlet, and a first pump body is arranged on the input pipeline; and a second pump body is arranged on the output pipeline, the first pump body is used for conveying the drying medium in the first storage cavity into the circulation space, the second pump body is used for conveying the drying medium in the drying box body into the first storage cavity, and the problem that in the prior art, the lithium ion batteries are dried unevenly is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a lithium-ion battery drying device. Background Technology

[0002] Lithium-ion batteries, as a green energy source, especially aluminum-cased cylindrical lithium-ion batteries, are increasingly widely used due to their malleable shape and high energy density.

[0003] Baking is an important step in the manufacturing process of lithium-ion batteries. Baking removes moisture and solvent residues from the batteries, thereby improving their performance and safety.

[0004] Existing baking methods generally use heating pads or similar methods, but these methods result in uneven baking temperatures, which can cause deformation or even damage to the internal structural components of lithium-ion batteries, further affecting the performance and safety of lithium-ion batteries. Utility Model Content

[0005] The main objective of this invention is to provide a lithium-ion battery drying device to solve the problem in the prior art where uneven baking temperature during the drying process causes deformation or even damage to the internal structural components of the lithium-ion battery.

[0006] To achieve the above objectives, according to one aspect of the present invention, a lithium-ion battery drying device is provided. The drying device includes a drying mechanism, which includes a drying chamber with multiple drying units. The drying units provide space for drying the lithium-ion battery. The drying mechanism has a first inlet and a first outlet.

[0007] In this system, a flow space for the drying medium is formed between any two adjacent drying units;

[0008] The medium supply mechanism has a first storage chamber for storing drying medium. The first storage chamber is connected to an input pipe and an output pipe. The first end of the input pipe is connected to a first inlet, and the first end of the output pipe is connected to a first outlet. A first pump body is provided on the input pipe, and a second pump body is provided on the output pipe. The first pump body is used to transport the drying medium in the first storage chamber to the flow space, and the second pump body is used to transport the drying medium in the drying box to the first storage chamber.

[0009] Furthermore, the drying mechanism also includes a vacuum unit, which is connected to the drying chamber to ensure that the pressure inside the drying chamber is within a preset pressure range.

[0010] The vacuum pumping unit includes:

[0011] Vacuum pipe, with its first end connected to the drying chamber;

[0012] The vacuum machine is connected to the second end of the vacuum pipe and is used to evacuate the inner cavity of the drying chamber.

[0013] Furthermore, the drying mechanism also includes a pressure detection element, which is located on the drying chamber and connected to the vacuum unit, so as to determine whether the vacuum unit needs to be turned on based on the detection result of the pressure detection element.

[0014] Furthermore, the medium supply mechanism includes: a first heating box, on which a first conveying pipe and a second conveying pipe are connected, the end of the first conveying pipe away from the first heating box is connected to the second end of the input pipe, the end of the second conveying pipe away from the first heating box is connected to the second end of the output pipe, and the first heating box has a first storage chamber for storing the drying medium.

[0015] Furthermore, the medium supply structure also includes: a first cooling box, on which a third conveying pipe and a fourth conveying pipe are connected, the end of the third conveying pipe away from the first cooling box is connected to the second end of the input pipe, the end of the fourth conveying pipe away from the first cooling box is connected to the second end of the output pipe, the first cooling box has a second storage chamber for storing the cooling medium, and the first cooling box is used to introduce the cooling medium into the flow space.

[0016] The first and third conveying pipes are both connected to the second end of the input pipe, and the second and fourth conveying pipes are both connected to the second end of the output pipe.

[0017] The first pump body is also used to transport the cooling medium in the first cooling box to the circulation space, and the second pump body is also used to transport the cooling medium in the drying box to the first cooling box.

[0018] Furthermore, the medium supply mechanism also includes: a first on / off valve, which is disposed on the first delivery pipeline; and / or,

[0019] A second on / off valve is provided on the second delivery pipeline; and / or,

[0020] A third on / off valve is installed on the third delivery pipeline; and / or,

[0021] The fourth on / off valve is located on the fourth delivery pipeline.

[0022] Furthermore, the drying mechanism also includes a heating element, which is disposed in the first heating chamber to heat the drying medium in the first storage chamber to a preset temperature.

[0023] Furthermore, the lithium-ion battery drying device also includes: a temperature detection element, which is located inside the first heating chamber and is used to detect the temperature of the drying medium inside the first heating chamber.

[0024] The display is connected to the temperature and pressure sensors respectively to show the detection results of the temperature and pressure sensors.

[0025] Furthermore, multiple drying units are arrayed within the drying chamber.

[0026] Furthermore, each drying unit is circular in shape, with an inner ring wall that is adapted to the outer wall of the lithium-ion battery.

[0027] Applying the technical solution of this utility model, during use, opening the first pump body causes the drying medium in the first storage chamber to enter the input pipe and then enter the drying chamber through the first inlet to dry the lithium-ion battery in the drying unit inside the drying chamber. After drying the lithium-ion battery, the drying medium enters the output pipe from the first outlet and returns to the first storage chamber through the output pipe.

[0028] This application employs a drying mechanism with multiple drying units within it. The lithium-ion batteries to be dried are placed into the drying units, and high-temperature water is used to dry them. The high-temperature water removes residual moisture from the lithium-ion batteries. Furthermore, due to the continuous flow of the drying medium, the dried medium can be returned to the first storage chamber. This method achieves uniform drying of the lithium-ion batteries, improving drying efficiency. The water heating method and the multiple drying units shorten the baking time of the lithium-ion batteries and improve production efficiency. Using water as the drying medium effectively controls temperature fluctuations, preventing damage to the internal structure of the lithium-ion batteries and ensuring their basic performance and safety. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0030] Figure 1A schematic diagram of the structure of the lithium-ion battery drying device provided in the embodiments of this application is shown.

[0031] The above figures include the following reference numerals:

[0032] 1. Drying unit; 2. Drying chamber; 3. First inlet; 4. First outlet; 5. Input pipe; 6. Lithium-ion battery; 7. Output pipe; 8. First pump body; 9. Second pump body; 10. Vacuum unit; 11. Pressure detection device; 12. First heating chamber; 13. First cooling chamber; 14. First conveying pipe; 15. Second conveying pipe; 16. Third conveying pipe; 17. Fourth conveying pipe; 18. First on / off valve; 19. Second on / off valve; 20. Third on / off valve; 21. Fourth on / off valve; 22. Heating element. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Lithium-ion batteries, as a green energy source, especially aluminum-cased cylindrical lithium-ion batteries, are increasingly widely used due to their malleable shape and high energy density.

[0035] Baking is an important step in the manufacturing process of lithium-ion batteries. Baking removes moisture and solvent residues from the batteries, thereby improving their performance and safety.

[0036] Existing baking methods generally use heating pads or similar methods, but these methods result in uneven baking temperatures, which can cause deformation or even damage to the internal structural components of lithium-ion batteries, further affecting the performance and safety of lithium-ion batteries.

[0037] Therefore, the purpose of this application is to provide a drying device for a lithium-ion battery 6 in response to the above problems. The drying device includes a drying mechanism, which includes a drying chamber 2 with multiple drying units 1. The drying units 1 are used to provide space for drying the lithium-ion battery 6. The drying mechanism has a first inlet 3 and a first outlet 4.

[0038] Among them, a flow space for the drying medium is formed between any two adjacent drying units 1;

[0039] The medium supply mechanism has a first storage chamber for storing drying medium. The first storage chamber is connected to an input pipe 5 and an output pipe 7. The first end of the input pipe 5 is connected to a first inlet 3, and the first end of the output pipe 7 is connected to a first outlet 4. A first pump body 8 is provided on the input pipe 5, and a second pump body 9 is provided on the output pipe 7. The first pump body 8 is used to transport the drying medium in the first storage chamber to the flow space, and the second pump body 9 is used to transport the drying medium in the drying box 2 to the first storage chamber.

[0040] Specifically, such as Figure 1 As shown, this application provides a drying device for a lithium-ion battery 6. The drying device includes a drying mechanism, which includes a drying chamber 2. The drying chamber 2 provides a space for drying the lithium-ion battery 6. A first inlet 3 and a first outlet 4 are provided on the drying mechanism. A flow space for the drying medium is formed between any two adjacent drying units 1. All drying units 1 are arranged in an array within the drying chamber 2 to achieve uniform drying of the lithium-ion battery 6. In this embodiment, the drying medium is hot water at a preset temperature. The drying device also includes a medium supply mechanism, which has a first storage chamber for storing the drying medium. An input pipe 5 and an output pipe are respectively connected to the first storage chamber. 7. The first end of the input pipe 5 is connected to the first inlet 3, and the first end of the output pipe 7 is connected to the first outlet 4. A first pump body 8 is also provided on the input pipe 5, and a second pump body 9 is provided on the output pipe 7. The first pump body 8 is used to transport the drying medium in the first storage chamber from the first inlet 3 to the flow space to heat the lithium-ion batteries 6 in the drying box 2. Under the action of the first pump body 8, the drying medium in the first storage chamber is continuously transported to the drying box 2 and gradually fills the entire drying box 2. Then the second pump body 9 is turned on. The second pump body 9 can allow the drying medium after heating the lithium-ion batteries 6 to enter the output pipe 7 from the first outlet 4 and enter the first storage chamber through the output pipe 7.

[0041] During use, opening the first pump body 8 causes the drying medium in the first storage chamber to enter the input pipe 5 and then enter the drying chamber 2 through the first inlet 3 to dry the lithium-ion battery 6 in the drying unit 1 inside the drying chamber 2. Opening the second pump body 9 allows the drying medium after drying the lithium-ion battery 6 to enter the output pipe 7 from the first outlet 4 and then return to the first storage chamber through the output pipe 7.

[0042] This application employs a drying mechanism with several drying units 1 within it. The lithium-ion battery 6 to be dried is placed into one of the drying units 1. When high-temperature water circulates within the drying chamber, the ambient temperature increases, creating favorable conditions for the evaporation of moisture from the lithium-ion battery 6. As the temperature rises, the moisture inside the battery gradually evaporates into water vapor. Furthermore, due to the continuous flow of the drying medium, the dried medium can be returned to the first storage chamber after drying the lithium-ion battery 6. This method achieves uniform drying of the lithium-ion battery 6, improving drying efficiency. The water heating method and the arrangement of several drying units 1 shorten the baking time of the lithium-ion battery 6 and improve its production efficiency. Using water as the drying medium effectively controls temperature fluctuations, preventing damage to the internal structure of the lithium-ion battery 6 and ensuring its basic performance and safety.

[0043] Furthermore, the drying mechanism also includes a vacuum unit 10, which is connected to the drying chamber 2 so that the pressure inside the drying chamber 2 is within a preset pressure range.

[0044] The vacuum pumping unit 10 includes:

[0045] Vacuum pipe, the first end of which is connected to the drying chamber 2;

[0046] The vacuum machine is connected to the second end of the vacuum pipe and is used to evacuate the inner cavity of the drying chamber 2.

[0047] Specifically, the drying mechanism provided in this application also includes a vacuum unit 10, which is connected to the drying chamber 2. The vacuum unit 10 includes a vacuum pipe. The first end of the vacuum pipe is used to communicate with the inner cavity of the drying chamber 2, and the other end of the vacuum pipe is used to connect to a vacuum machine. When the vacuum machine is working, it can perform a vacuum operation on the drying chamber 2 so that the pressure in the inner cavity of the drying chamber 2 is within a preset pressure range. In this embodiment, the preset pressure range is -90 kPa to -96 kPa. By performing a vacuum treatment on the inner cavity of the drying chamber 2, the air in the inner cavity of the drying chamber 2 can be removed to avoid the difficulty in completely drying the battery due to the presence of air.

[0048] Furthermore, the drying mechanism also includes a pressure detection element 11, which is installed on the drying chamber 2 and connected to the vacuum unit 10, so as to determine whether the vacuum unit 10 needs to be turned on based on the detection result of the pressure detection element 11.

[0049] Specifically, the drying mechanism also includes a pressure detection element 11 installed on the drying chamber 2. The pressure detection element 11 is used to detect the real-time pressure inside the drying chamber 2 and determine whether the vacuum unit 10 needs to be activated to perform a vacuuming operation on the drying chamber 2 based on the real-time pressure value.

[0050] During use, the lithium-ion battery 6 to be baked is first placed into the drying unit 1, and then the vacuum unit 10 is turned on to vacuum the drying chamber 2 until the pressure inside the drying chamber 2 is within the preset pressure range. Then, the drying operation of the lithium-ion battery 6 inside the drying chamber 2 is started, and the real-time pressure detected by the pressure detection device 11 is observed in real time to ensure that the pressure inside the drying chamber 2 is always within the preset pressure range. In this way, the air inside the drying chamber 2 can be evacuated.

[0051] Furthermore, the medium supply mechanism includes: a first heating box 12, on which a first conveying pipe 14 and a second conveying pipe 15 are connected, one end of the first conveying pipe 14 away from the first heating box 12 is connected to the second end of the input pipe 5, and one end of the second conveying pipe 15 away from the first heating box 12 is connected to the second end of the output pipe 7. The first heating box 12 has a first storage chamber for storing the drying medium.

[0052] Specifically, the medium supply mechanism includes a first heating box 12, on which a first conveying pipe 14 and a second conveying pipe 15 are provided. The end of the first conveying pipe 14 away from the first heating box 12 is connected to the second end of the input pipe 5. The drying medium in the first heating box 12 can enter the input pipe 5 through the first conveying pipe 14 and then enter the drying box 2 through the conveying pipe. The end of the second conveying pipe 15 away from the first heating box 12 is connected to the second end of the output pipe 7. The drying medium after drying the lithium-ion battery 6 enters the output pipe 7 through the first outlet 4 and then enters the second conveying pipe 15 from the output pipe 7. It then flows back to the inside of the first heating box 12 through the second conveying pipe 15 to achieve circulation. The first heating box 12 has a first storage chamber inside.

[0053] Furthermore, the medium supply structure also includes: a first cooling box 13, on which a third conveying pipe 16 and a fourth conveying pipe 17 are connected, the end of the third conveying pipe 16 away from the first cooling box 13 is connected to the second end of the input pipe 5, and the end of the fourth conveying pipe 17 away from the first cooling box 13 is connected to the second end of the output pipe 7. The first cooling box 13 has a second storage chamber for storing the cooling medium, and the first cooling box 13 is used to introduce the cooling medium into the flow space.

[0054] The first conveying pipe 14 and the third conveying pipe 16 are both connected to the second end of the input pipe 5, and the second conveying pipe 15 and the fourth conveying pipe 17 are both connected to the second end of the output pipe 7.

[0055] The first pump body 8 is also used to transport the cooling medium in the first cooling box 13 to the circulation space, and the second pump body 9 is also used to transport the cooling medium in the drying box 2 into the first cooling box 13.

[0056] Specifically, the medium supply mechanism also includes a first cooling box 13, which has a second storage chamber containing a cooling medium, which in this embodiment is cooling water. A third conveying pipe 16 and a fourth conveying pipe 17 are provided on the first cooling box 13. The end of the third conveying pipe 16 away from the first cooling box 13 is connected to the second end of the input pipe 5. When the lithium-ion battery 6 needs to be cooled after drying, the cooling medium in the first cooling box 13, under the action of the first pump 8, can enter the drying box 2 through the third conveying pipe 16 to achieve... The dried lithium-ion battery 6 inside the drying chamber 2 is now cooled. The end of the fourth conveying pipe 17 away from the first cooling chamber 13 is connected to the second end of the output pipe 7. The cooling water after cooling the lithium-ion battery 6 enters the output pipe 7 from the first outlet 4, and under the action of the second pump 9, it enters the fourth conveying pipe 17 from the output pipe 7 and flows back to the first cooling chamber 13 from the fourth conveying pipe 17. The first conveying pipe 14 and the third conveying pipe 16 are both connected to the second end of the input pipe 5, and the second conveying pipe 15 and the fourth conveying pipe 17 are both connected to the second end of the output pipe 7.

[0057] Furthermore, the medium supply mechanism also includes: a first on / off valve 18, which is disposed on the first delivery pipeline 14; and / or,

[0058] The second on / off valve 19 is installed on the second conveying pipeline 15; and / or,

[0059] The third on / off valve 20 is installed on the third conveying pipeline 16; and / or,

[0060] The fourth on / off valve 21 is installed on the fourth conveying pipeline 17.

[0061] Specifically, the medium supply mechanism also includes a first on / off valve 18 provided on the first conveying pipe 14, which is used to control the opening and closing of the first conveying pipe 14 to control the entry or cessation of the drying medium in the first storage chamber into the drying chamber 2. The medium supply unit also includes a second on / off valve 19 provided on the second conveying pipe 15, which is used to control the opening and closing of the second conveying pipe 15 to control when the drying medium after drying the lithium-ion battery 6 in the drying chamber 2 enters the first storage chamber. A third on / off valve 20 is provided on the third conveying pipe 16, which is used to control the opening and closing of the third conveying pipe 16 to control when the cooling medium in the second storage chamber enters the drying chamber 2 to cool the lithium-ion battery 6 in the drying chamber 2. A fourth on / off valve 21 is provided on the fourth conveying pipe 17, which is used to control the opening and closing of the fourth conveying pipe 17 to control when the drying medium after cooling the lithium-ion battery 6 in the drying chamber 2 enters the second storage chamber.

[0062] Furthermore, the drying mechanism also includes:

[0063] Heating element 22 is disposed inside the first heating box 12 to heat the drying medium in the first storage chamber to a preset temperature.

[0064] Specifically, the drying mechanism also includes a heating element 22 disposed in the first heating chamber 12. When the temperature of the drying medium in the first heating chamber 12 is lower than the set temperature, the heating element 22 starts to heat the drying medium in the first heating chamber 12 so that the temperature of the drying medium is kept at the set temperature in real time, thereby ensuring that the temperature of the drying medium in the drying chamber 2 is always greater than or equal to 90°C.

[0065] Furthermore, the lithium-ion battery drying device also includes:

[0066] Temperature detection element, which is installed inside the first heating box 12, is used to detect the temperature of the drying medium inside the first heating box 12;

[0067] The display is connected to the temperature sensor and the pressure sensor 11 respectively to display the detection results of the temperature sensor and the pressure sensor 11.

[0068] Specifically, the drying device also includes a temperature detection element located inside the first heating chamber 12. The temperature detection element can detect the real-time temperature of the drying medium. The temperature detection element is connected to the heating element 22 and the controller. When the temperature of the drying medium is lower than the set temperature, the heating element 22 starts to heat the drying medium.

[0069] Furthermore, multiple drying units 1 are arrayed within the drying chamber 2.

[0070] Specifically, multiple drying units 1 are arrayed within the drying chamber 2 to further ensure the uniformity of drying of the lithium-ion battery 6.

[0071] Each drying unit 1 is circular in shape, with an inner ring wall that is adapted to the outer wall of the lithium-ion battery 6.

[0072] Specifically, each drying unit 1 is annular in shape, with an inner annular wall inside. The inner annular wall is adapted to the outer wall of the lithium ion battery, which allows the drying medium to remove as much heat as possible from the lithium ion battery 6 itself.

[0073] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: Working principle: During use, various parameters for drying the lithium-ion battery 6 are first determined, including the starting temperature for drying, the drying time for drying the lithium-ion battery 6, the vacuum degree inside the drying chamber 2, and the cooling temperature for cooling the lithium-ion battery 6. After these parameters are determined, the heating element 22 is controlled to heat the drying medium inside the first heating chamber 12 until the temperature of the drying medium reaches the set temperature. Then, the first on / off valve 18 and the second on / off valve 19 are opened simultaneously, and the third on / off valve 20 and the fourth on / off valve 21 are closed simultaneously. The first pump 8 is then turned on to allow the drying medium inside the first heating chamber 12 to enter the drying chamber 2, thus circulating and heating the drying chamber 2. The lithium-ion battery 6 is placed into the drying unit 1 in the drying chamber 2. When the temperature inside the drying chamber 2 reaches 90 degrees Celsius or higher, the drying chamber 2 is sealed, and the vacuum machine is started to evacuate the drying chamber 2. When the vacuum degree inside the drying chamber 2 is between -90 kPa and -96 kPa, the drying process of the lithium-ion battery 6 begins. When the cumulative drying time reaches the required drying time, the cooling process of the drying chamber 2 begins. The first on / off valve 18 and the second on / off valve 19 are closed, and the third on / off valve 20 and the fourth on / off valve 21 are opened. The second pump body 9 is turned on, and the cooling medium in the first cooling chamber 13 is sent into the drying chamber 2 to circulate and cool the lithium-ion battery 6 inside the drying chamber 2. When the temperature reaches the set feeding temperature, the vacuuming process of the drying chamber 2 is stopped.

[0074] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0076] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0077] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0078] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0079] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lithium-ion battery drying device, characterized in that, include: The drying mechanism includes a drying chamber (2) with multiple drying units (1), the drying units (1) being used to provide space for drying lithium-ion batteries (6), and the drying mechanism having a first inlet (3) and a first outlet (4). A flow space for the drying medium is formed between any two adjacent drying units (1); The medium supply mechanism has a first storage chamber for storing the drying medium. The first storage chamber is connected to an input pipe (5) and an output pipe (7). The first end of the input pipe (5) is connected to the first inlet (3), and the first end of the output pipe (7) is connected to the first outlet (4). A first pump body (8) is provided on the input pipe (5), and a second pump body (9) is provided on the output pipe (7). The first pump body (8) is used to transport the drying medium in the first storage chamber to the flow space, and the second pump body (9) is used to transport the drying medium in the drying box (2) to the first storage chamber.

2. The lithium-ion battery drying apparatus according to claim 1, characterized in that, The drying mechanism also includes: A vacuum unit (10) is connected to the drying chamber (2) so that the pressure in the inner cavity of the drying chamber (2) is within a preset pressure range. The vacuum pumping unit (10) includes: A vacuum pipe, the first end of which is connected to the drying chamber (2); A vacuum machine, which is connected to the second end of the vacuum pipe, is used to evacuate the inner cavity of the drying chamber (2).

3. The lithium-ion battery drying apparatus according to claim 2, characterized in that, The drying mechanism also includes: A pressure detection element (11) is provided on the drying chamber (2) and connected to the vacuum unit (10) to determine whether the vacuum unit (10) needs to be turned on based on the detection result of the pressure detection element (11).

4. The lithium-ion battery drying apparatus according to claim 3, characterized in that, The medium supply mechanism includes: A first heating chamber (12) is connected to a first conveying pipe (14) and a second conveying pipe (15). The end of the first conveying pipe (14) away from the first heating chamber (12) is connected to the second end of the input pipe (5), and the end of the second conveying pipe (15) away from the first heating chamber (12) is connected to the second end of the output pipe (7). The first heating chamber (12) has a first storage chamber for storing the drying medium.

5. The lithium-ion battery drying apparatus according to claim 4, characterized in that, The medium supply structure further includes: A first cooling box (13) is connected to a third conveying pipe (16) and a fourth conveying pipe (17). The end of the third conveying pipe (16) away from the first cooling box (13) is connected to the second end of the input pipe (5). The end of the fourth conveying pipe (17) away from the first cooling box (13) is connected to the second end of the output pipe (7). The first cooling box (13) has a second storage chamber for storing cooling medium. The first cooling box (13) is used to introduce cooling medium into the flow space. The first conveying pipe (14) and the third conveying pipe (16) are both connected to the second end of the input pipe (5), and the second conveying pipe (15) and the fourth conveying pipe (17) are both connected to the second end of the output pipe (7). The first pump body (8) is also used to transport the cooling medium in the first cooling box (13) to the flow space, and the second pump body (9) is also used to transport the cooling medium in the drying box (2) to the first cooling box (13).

6. The lithium-ion battery drying apparatus according to claim 5, characterized in that, The medium supply mechanism further includes: A first on / off valve (18) is provided on the first delivery pipeline (14); and / or A second on / off valve (19) is provided on the second delivery pipeline (15); and / or A third on / off valve (20) is provided on the third delivery pipeline (16); and / or The fourth on / off valve (21) is located on the fourth conveying pipeline (17).

7. The lithium-ion battery drying apparatus according to claim 4, characterized in that, The drying mechanism also includes: A heating element (22) is disposed inside the first heating box (12) to heat the drying medium in the first storage chamber to a preset temperature.

8. The lithium-ion battery drying apparatus according to claim 4, characterized in that, The lithium-ion battery drying device also includes: A temperature detection element is disposed inside the first heating box (12) to detect the temperature of the drying medium inside the first heating box (12); The display is connected to the temperature sensor and the pressure sensor (11) respectively to display the detection results of the temperature sensor and the pressure sensor (11).

9. The lithium-ion battery drying apparatus according to claim 1, characterized in that, The plurality of drying units (1) are arranged in an array inside the drying chamber.

10. The lithium-ion battery drying apparatus according to claim 1, characterized in that, Each of the drying units (1) is annular in shape and has an annular inner wall that is adapted to the outer wall of the lithium-ion battery (6).

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