Lithium battery drying furnace

Abstract

The invention provides a lithium battery drying furnace which comprises a furnace body and lug chains arranged on the upper portion and the lower portion in the furnace body, orthographic projections of the two lug chains in the vertical direction coincide, and a gear meshed with one lug chain is connected with the other gear located under the gear and meshed with the other lug chain through a rotating shaft. A plurality of fixing parts are uniformly arranged on the chains with the lugs at intervals, a vertical support is arranged between two fixing parts which are respectively positioned on the two groups of chains with the lugs, orthographic projections of the two fixing parts in the vertical direction are overlapped, and each vertical support is provided with a plurality of horizontal accommodating positions for accommodating lithium batteries. The floor area of baking equipment in a production site is reduced, and the space utilization rate of the production site is increased; secondly, the problems of chain sagging and chain falling of a long-distance conveying structure can be avoided; and moreover, compared with a horizontal conveying structure which needs to perform six-surface constraint on the lithium battery to prevent the lithium battery from falling when the chain is overturned downwards, the lithium battery conveying device is simpler in structure and lower in cost.

Description

Technical Field

[0001] The present invention generally relates to the field of lithium battery technology. More specifically, the present invention relates to a lithium battery drying furnace. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. They have the advantages of high energy density, long cycle life and low self-discharge rate. Domestic lithium battery technology is mainly used in the new energy vehicle industry and energy storage industry.

[0003] The existing lithium battery drying furnace uses a chain for long-distance transportation, and the chain often sags or even falls off, which seriously affects the production efficiency. In addition, due to the spatial layout in the existing drying furnace, the drying furnace designed to achieve the baking of a certain number of lithium batteries is large in size and occupies a large amount of workshop space. With only limited space, it is impossible to effectively increase production capacity. Furthermore, when the traditional drying furnace uses a chain for transportation, the storage position for holding the lithium battery constrains the six sides of the battery, the structure is relatively complex, and it is not convenient to take and put the lithium battery.

[0004] In view of this, there is an urgent need to provide a lithium battery drying furnace to solve the above problems. Summary of the invention

[0005] In order to at least solve one or more technical problems in the above-mentioned background technology, the present invention proposes a lithium battery drying furnace. To this end, the present invention provides the following technical solutions.

[0006] The invention discloses a lithium battery drying furnace, comprising: a furnace body, a group of belt ear chains and two transmission gears meshing with the belt ear chains are respectively provided above and below the furnace body, the two groups of belt ear chains are annular closed chains laid on two horizontal planes respectively, and the orthographic projections of the two groups of belt ear chains in the vertical direction coincide with each other, a transmission gear meshing with one group of belt ear chains and another transmission gear located directly below it and meshing with the other group of belt ear chains are connected by a rotating shaft, and also includes a driving device for rotating the rotating shaft or the transmission gear, a plurality of fixing members are evenly spaced on each group of belt ear chains, a vertical support is provided between two fixing members which are respectively located on the two groups of belt ear chains and whose orthographic projections coincide with each other in the vertical direction, each vertical support has a plurality of horizontal accommodating positions for accommodating lithium batteries, the horizontal accommodating positions are all arranged on one side of the vertical support facing the inner wall of the furnace body, and an annular closed chain is provided on the outer periphery of each group of belt ear chains The wheelbase is shortened and the roller shutter speed retardant is used to move the train to a higher position than the speed retardant in the lift.

[0007] Preferably, the orthographic projection of the furnace body in the vertical direction is a rectangle, the air outlet and the return air outlet are respectively arranged on both sides of the long side of the rectangle, the transmission gear is respectively arranged on both sides close to the narrow side of the rectangle, the length of the narrow side of the furnace body is 1.5~3m, and the length of the long side of the rectangle is 5~10 times the length of the narrow side.

[0008] Preferably, the height of the furnace body is 3-5 m.

[0009] Preferably, the distance between two adjacent fixing members on each set of ear chains is 30-50 cm.

[0010] Preferably, a second heating device is further provided in the furnace body, and the second heating device is used to increase the ambient temperature in the furnace body.

[0011] Preferably, the second heating device comprises an electromagnetic induction coil, and the electromagnetic induction coil is laid on the surface of the glass fiber board.

[0012] Preferably, the inner and outer sides of the annular closed slide rail are respectively provided with open grooves for accommodating the limiting wheels, the cross-section of the open groove is an isosceles trapezoid, the opening direction of the open groove is horizontally set, and the opening height of the open groove is greater than the inner height of the opening groove, the direction of the central axis of the two wheels of each group of limiting wheels is vertical, and the outer rings of the two wheels of each group of limiting wheels are respectively fitted with the inner side of the open groove, and the outer ring width of the two wheels is equal to the inner height of the open groove, so as to limit the displacement of the fixing part relative to the annular closed slide rail in a direction perpendicular to the moving direction of the fixing part along the annular closed slide rail.

[0013] Preferably, it also includes a positioning device, which is used to lock the position of the vertical support during loading to facilitate loading.

[0014] Preferably, the positioning device includes a positioning column arranged on the fixing member, and a U-shaped slot, the opening of the U-shaped slot is arranged toward the positioning column, the other end of the U-shaped slot opposite to the opening is fixedly connected to the telescopic end of the cylinder, and the fixed end of the cylinder is installed on the furnace body, so that when the positioning column is in a preset position, the cylinder can be extended and retracted to control the U-shaped slot to clamp the positioning column or move away from the positioning column.

[0015] Preferably, the vertical projections of the horizontal accommodation positions on any vertical support overlap.

[0016] The technical solution provided by this application may have the following beneficial effects: By utilizing the device described in the above-mentioned embodiments of the present invention and its multiple schemes, that is, the present invention can arrange two groups of ear chains in the upper and lower parts of the furnace body and lay them on two horizontal support plates respectively, and fix the vertical support by arranging fixing parts on the two groups of ear chains respectively, and at the same time, arrange limiting wheels on the outer periphery of the ear chains, so that when the ear chains are running, the horizontal accommodating positions on the vertical support can run stably with the ear chains in the vertical conveying structure, and during the operation, the lithium batteries on the horizontal accommodating positions are heated by the preheated inert gas introduced into the furnace body.

[0017] Firstly, the present invention arranges the chains with ears in the above manner to form a vertical conveying structure, which helps to reduce the floor space occupied by the baking equipment in the production site, improves the space utilization rate of the production site, and facilitates the placement of more baking equipment to increase production capacity when the area is limited and the site size is determined; secondly, the present invention can avoid the chain sagging and chain falling problems existing in the long-distance conveying structure through the above-mentioned vertical conveying structure, improve the stability of the conveying structure, and eliminate abnormalities in the production process; furthermore, a horizontal accommodating position for holding lithium batteries is provided on the vertical support, and the horizontal accommodating position for the lithium battery only needs to constrain the bottom of the lithium battery, and there is no need to set constraints on the top and sides of the lithium battery. Compared with the horizontal conveying structure, the lithium battery needs to be constrained on six sides to prevent the lithium battery from falling when the chain is flipped downward. The structure of the present invention is simpler and has lower costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 is a perspective view showing an embodiment of the present invention; Figure 2 It is shown Figure 1 A local enlarged view of point A in FIG. Explanation of the reference numerals: 11, furnace body; 12, chain with ears; 13, fixing piece; 14, vertical support; 15, horizontal accommodation position; 16, annular closed slide rail; 17, wheel; 18, horizontal support plate; 71, open groove; 91, positioning column; 92, U-shaped slot. DETAILED DESCRIPTION

[0019] Embodiments will now be described with reference to the accompanying drawings. It should be understood that for simplicity and clarity of explanation, reference numerals may be repeated in the accompanying drawings to indicate corresponding or similar elements where deemed appropriate. In addition, the present invention sets forth many specific details in order to provide a thorough understanding of the embodiments described herein. However, it will be appreciated by those of ordinary skill in the art that the embodiments described herein may be practiced without these specific details. In other cases, well-known methods, processes, and components are not described in detail to avoid obscuring the embodiments described herein. Moreover, the description should not be construed as limiting the scope of the embodiments described herein.

[0020] According to one embodiment of the present invention, a lithium battery drying furnace is provided. Figure 1 and Figure 2As shown, it comprises: a furnace body 11, a group of belt ear chains 12 and two transmission gears meshed with the belt ear chains 12 are respectively arranged above and below the furnace body 11, the two groups of belt ear chains 12 are ring-shaped closed chains laid on two horizontal planes respectively, and the vertical projections of the two groups of belt ear chains 12 coincide, a transmission gear meshed with one group of belt ear chains 12 and another transmission gear located directly below the transmission gear and meshed with the other group of belt ear chains 12 are connected by a rotating shaft, and also comprises a device for making the The driving device for rotating the rotating shaft or the transmission gear, each set of ear chains 12 is evenly spaced with a plurality of fixing members 13, a vertical support 14 is provided between two fixing members 13 respectively located on the two sets of ear chains 12 and whose orthographic projections overlap in the vertical direction, each vertical support 14 has a plurality of horizontal accommodating positions 15 for accommodating lithium batteries, and the horizontal accommodating positions 15 are all arranged on the side of the vertical support 14 facing the inner wall of the furnace body 11, and an annular closed slide rail 16 is provided on the outer periphery of each set of ear chains 12 At least one set of limiting wheels is provided below each fixing member 13, and each set of limiting wheels is arranged in pairs. The two wheels 17 of each set of limiting wheels are respectively located on the inner and outer sides of the annular closed slide rail 16, and each annular closed slide rail 16 is fixedly laid on the upper surface of a horizontal support plate 18. A preset gap is left between the lowest point of each set of ear chains 12 and the upper surface of the horizontal support plate 18 laid by the annular closed slide rail 16 arranged on the outer periphery of the ear chain 12, and the horizontal support plate 18 is fixedly connected to the furnace body 11. The furnace body 1 An air outlet and an air return port are respectively arranged on two opposite sides of the furnace body 11, and both the air outlet and the air return port are arranged toward the horizontal accommodation position 15 located on the vertical support 14. The furnace body 11 also includes an air blowing device for allowing the inert gas to be discharged through the air outlet and flow to the air return port in the furnace body 11 so that the inert gas circulates. The interior of the furnace body 11 is connected to an air inlet pipe for introducing the inert gas, and a first heating device is used to heat the inert gas introduced into the furnace body 11.

[0021] It is easy to understand that the annular closed chains in the above embodiment are respectively located above and below the furnace body 11, and the vertical projections of the two groups of annular closed chains overlap, so that it is convenient to connect two different fixing members 13 respectively arranged on the annular closed chains and the two fixing members 13 whose vertical projections overlap using the vertical support 14, and then set a horizontal receiving position 15 for placing the lithium battery on the vertical support 14.

[0022] In order to realize the present invention to improve the drying capacity of lithium batteries in a limited space, the present invention proposes to use two groups of ear chains 12 to form a vertical conveying structure so as to utilize the horizontal accommodating position 15 provided on the vertical support 14 so that the furnace body 11 of the drying furnace can accommodate more lithium batteries. At the same time, it is also necessary to consider the problem of chain sagging caused by the vertical conveying structure proposed in the present invention during long-distance chain transportation. Since any one group of annular closed chains in the two groups of ear chains 12 that form the vertical conveying structure are horizontally arranged, it is necessary to consider the stable support structure during operation. Therefore, the present invention provides an annular closed slide rail 16 on the outer periphery of each group of ear chains 12, and provides at least one group of limiting wheels under each fixing member 13, such as Figure 1 and Figure 2 As shown, each group of limiting wheels is arranged in pairs, for example, only one group of limiting wheels including two wheels 17 can be arranged, and the two wheels 17 of each group of limiting wheels are respectively located on the inner and outer sides of the annular closed slide rail 16, or two groups of limiting wheels can be arranged, so that a total of four wheels 17 are included, but the two wheels 17 in each group of limiting wheels are still respectively located on the inner and outer sides of the annular closed slide rail 16, so that a group of limiting wheels is used to clamp the fixing member 13 on both sides of the annular closed slide rail 16 and prevent it from falling off, and at the same time, each annular closed slide rail 16 is fixedly laid on the upper surface of a horizontal support plate 18, so two horizontal support plates 18 need to be arranged. Here, a preset gap is left between the lowest point of each group of ear chains 12 and the upper surface of the horizontal support plate 18 laid by the annular closed slide rail 16 arranged on the outer periphery of the ear chain 12. Through this restriction, that is, the restriction of the preset gap, it can be ensured that the ear chain 12 and the horizontal support plate 18 do not contact and do not generate friction, thereby improving the stability of the operation of the ear chain 12.

[0023] It is necessary to set up a driving device in the present invention, because the present invention also includes a blasting device for allowing the inert gas to be discharged through the air outlet and flow in the furnace body 11 to the return air outlet so that the inert gas circulates, and a first heating device, wherein the interior of the furnace body 11 is connected to the air inlet pipe for introducing the inert gas, and the first heating device is used to heat the inert gas introduced into the furnace body 11. Therefore, a driving device is provided to drive the rotating shaft or the transmission gear to rotate, so that the ear chain 12 or the annular closed chain can run, and then the lithium battery on the horizontal accommodation position 15 on the vertical support 14 can circulate along the annular closed slide rail 16, increase the relative movement speed between the lithium battery and the hot air fluid, accelerate the convective heat transfer, and improve the drying efficiency of the lithium battery.

[0024] It is also not difficult to understand that, since a vertical conveying structure is provided in the furnace body 11 of the present invention, and each horizontal accommodating position 15 located on the vertical support 14 continues to remain relatively still with the vertical support 14 during the operation of the vertical support 14 or the chain with ear 12, and each horizontal accommodating position 15 does not overturn or flip. Therefore, the horizontal accommodating position 15 only needs to have a bottom for constraining the bottom of the lithium battery, and there is no need to set constraints on the top and sides of the lithium battery. Compared with the traditional horizontal conveying structure, which requires six-sided constraints on the lithium battery to prevent the lithium battery from falling when the chain flips downward, the vertical conveying structure of the present invention is simpler and has lower costs.

[0025] In one embodiment, the orthographic projection of the furnace body 11 in the vertical direction is a rectangle, the air outlet and the return air outlet are respectively arranged on both sides of the long side of the rectangle, the transmission gear is respectively arranged on both sides of the narrow side of the rectangle, the narrow side length of the furnace body 11 is 1.5~3m, and the long side length of the rectangle is 5~10 times the narrow side length. Since the purpose of the present invention is to increase the drying capacity of lithium batteries in a limited space, the vertical conveying structure arranged in the furnace body 11 can use the horizontal accommodation position 15 arranged on the vertical support 14 to enable the furnace body 11 of the drying furnace to accommodate more lithium batteries. Therefore, in practical applications, it is more suitable for the orthographic projection of the furnace body 11 in the vertical direction to be a rectangle. Considering the stability of the placement of the furnace body 11, the narrow side length of the furnace body 11 is at least 1.5m. Since it is not affected by the sagging of the ear chain 12 and combined with the actual situation of common production sites, the long side length of the furnace body 11 can be 5~10 times the narrow side length. Furthermore, in order to improve the drying effect, the air outlet and the air return outlet need to be arranged on both sides of the long side of the rectangle.

[0026] In one embodiment, the height of the furnace body 11 is 3-5 m. Limiting the height range of the furnace body 11 is also for the sake of safety and stability when the furnace body 11 is placed.

[0027] In another embodiment, the distance between two adjacent fixing members 13 on each set of ear chains 12 is 30-50 cm. It is easy to understand that if a long section of ear chain 12 lacks any support, the ear chain 12 will inevitably sag due to its own gravity. Therefore, the distance between two adjacent fixing members 13 on the ear chain 12 is limited to 30-50 cm, eliminating the obvious sagging of the ear chain 12 compared to the horizontal support plate 18 and improving the running stability of the ear chain 12.

[0028] In order to further improve the drying effect, a second heating device is further provided in the furnace body 11, and the second heating device is used to increase the ambient temperature in the furnace body 11. Specifically, the second heating device includes an electromagnetic induction coil, and the electromagnetic induction coil is laid on the surface of the fiberglass board. The advantage of using the electromagnetic induction coil for heating is that it can quickly increase the ambient temperature in the furnace body 11, the heating temperature is accurately controlled, and the service life is long.

[0029] like Figure 2 As shown, in some embodiments, the inner and outer sides of the annular closed slide rail 16 are respectively provided with open grooves 71 for accommodating the limiting wheels, the cross-section of the open groove 71 is an isosceles trapezoid, the opening direction of the open groove 71 is horizontally set, and the opening height of the open groove 71 is greater than the inner height of the opening groove 71, the direction of the central axis of the two wheels 17 of each group of limiting wheels is the vertical direction, and the outer rings of the two wheels 17 of each group of limiting wheels are respectively fitted with the inner side of the open groove 71, and the outer ring widths of the two wheels 17 are equal to the inner height of the open groove 71, so as to limit the displacement of the fixing member 13 relative to the annular closed slide rail 16 in a direction perpendicular to the moving direction of the fixing member 13 along the annular closed slide rail 16.

[0030] It is easy to understand that the cross-section of the annular closed slide rail 16 is I-shaped, while the cross-section of the opening groove 71 is designed to be an isosceles trapezoid and the outer ring width of the wheel 17 is equal to the inner side height of the opening groove 71. The advantage is that when the outer rings of the two wheels 17 of each set of limiting wheels are respectively fitted with the inner side of the opening groove 71, there is no direct friction between the wheel shoulder adjacent to the outer ring of the wheel 17 and the opening groove 71, that is, when the wheel 17 is located in the opening groove 71, there is only rolling friction, which helps to reduce the friction between the fixing member 13 and the annular closed slide rail 16, so that the operation of the fixing member 13 and the vertical support 14 that moves synchronously therewith is more stable.

[0031] like Figure 2 As shown, in other embodiments, a positioning device is further included, and the positioning device is used to make each vertical support 14 be in a preset loading position in turn during loading to facilitate loading. Specifically, the positioning device includes a positioning column 91 provided on the fixing member 13, and a U-shaped slot 92, the opening of the U-shaped slot 92 is arranged toward the positioning column 91, and the other end of the U-shaped slot 92 opposite to the opening is fixedly connected to the telescopic end of the cylinder, and the fixed end of the cylinder is installed on the furnace body 11, so that when the positioning column 91 is in a preset position, the cylinder is telescopic to control the U-shaped slot 92 to clamp the positioning column 91 or move away from the positioning column 91. The significance of setting the positioning device is to accurately lock the position of the vertical support 14 and improve the position accuracy of the vertical support 14 to facilitate loading.

[0032] In the above embodiment, the vertical projections of the horizontal accommodating positions 15 on any vertical support 14 overlap. By limiting the distribution positions of the horizontal accommodating positions 15 on the same vertical support 14, the distribution of all the horizontal accommodating positions 15 on a vertical support 14 is made to be regular, that is, the horizontal accommodating positions 15 have the same horizontal position coordinates in a relatively certain space, and only the height position coordinates are different. Such a setting is convenient for reducing the adjustment action of the manipulator itself during loading and improving the loading speed.

[0033] It should be understood that the possible terms "first" or "second" etc. in the claims, specifications and drawings disclosed in the present invention are used to distinguish different objects rather than to describe a specific order. The terms "include" and "comprise" used in the specifications and claims disclosed in the present invention indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0034] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in the disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0035] Although the embodiments of the present invention are as described above, the contents are only examples used to facilitate understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. Any technician in the technical field of the present invention can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be based on the scope defined by the attached claims.

Claims

1. A lithium battery drying furnace, characterized in that: include: A furnace body (11) is provided with a group of ear chains (12) and two transmission gears meshing with the ear chains (12) at the upper and lower parts of the furnace body (11), the two groups of ear chains (12) are annular closed chains laid on two horizontal planes respectively, and the vertical projections of the two groups of ear chains (12) overlap, a transmission gear meshing with one group of ear chains (12) and another transmission gear located directly below the transmission gear and meshing with the other group of ear chains (12) are connected via a rotating shaft, and also includes a device for making the rotating shaft or the transmission gear mesh with the other group of ear chains (12). A driving device for rotating a moving gear, each set of ear chains (12) is evenly spaced with a plurality of fixing members (13), a vertical support (14) is provided between two fixing members (13) respectively located on two sets of ear chains (12) and whose orthographic projections overlap in the vertical direction, each vertical support (14) has a plurality of horizontal accommodating positions (15) for accommodating lithium batteries, the horizontal accommodating positions (15) are all located on a side of the vertical support (14) facing the inner wall of the furnace body (11), and an annular closed slide rail (16) is provided on the outer periphery of each set of ear chains (12) At least one set of limiting wheels is provided below each fixing member (13), each set of limiting wheels is arranged in pairs, and the two wheels (17) of each set of limiting wheels are respectively located on the inner and outer sides of the annular closed slide rail (16), each annular closed slide rail (16) is fixedly laid on the upper surface of a horizontal support plate (18), and a preset gap is left between the lowest point of each set of ear chains (12) and the upper surface of the horizontal support plate (18) laid on the annular closed slide rail (16) arranged on the outer periphery of the ear chain (12), and the horizontal support plate (18) is fixedly connected to the furnace body (11), An air outlet and an air return outlet are respectively arranged on two opposite side surfaces inside the furnace body (11), and the air outlet and the air return outlet are both arranged toward the horizontal accommodation position (15) located on the vertical support (14). The furnace body (11) also includes an air blowing device for allowing the inert gas to be discharged through the air outlet and flow inside the furnace body (11) to the air return outlet so that the inert gas circulates. The interior of the furnace body (11) is connected to an air inlet pipe for introducing the inert gas, and a first heating device is provided, and the first heating device is used to heat the inert gas introduced into the furnace body (11).

2. A lithium battery drying furnace according to claim 1, characterized in that: The orthographic projection of the furnace body (11) in the vertical direction is a rectangle, the air outlet and the air return outlet are respectively arranged on both sides of the long side of the rectangle, the transmission gear is respectively arranged on both sides close to the narrow side of the rectangle, the narrow side of the furnace body (11) is 1.5 to 3 meters long, and the long side of the rectangle is 5 to 10 times the length of the narrow side.

3. A lithium battery drying furnace according to claim 2, characterized in that: The height of the furnace body (11) is 3-5 m.

4. A lithium battery drying furnace according to claim 1, characterized in that: The distance between two adjacent fixing members (13) on each set of ear chains (12) is 30-50 cm.

5. A lithium battery drying furnace according to claim 1, characterized in that: A second heating device is also provided in the furnace body (11), and the second heating device is used to increase the ambient temperature in the furnace body (11).

6. A lithium battery drying furnace according to claim 5, characterized in that: The second heating device comprises an electromagnetic induction coil, and the electromagnetic induction coil is laid on the surface of the glass fiber board.

7. A lithium battery drying furnace according to claim 1, characterized in that: The inner and outer sides of the annular closed slide rail (16) are respectively provided with open grooves (71) for accommodating the limiting wheels. The cross section of the open groove (71) is an isosceles trapezoid. The opening direction of the open groove (71) is horizontally arranged, and the opening height of the open groove (71) is greater than the inner side height of the open groove (71). The direction of the central axis of the two wheels (17) of each group of limiting wheels is the vertical direction. The outer rings of the two wheels (17) of each group of limiting wheels are respectively fitted with the inner side of the open groove (71). The outer ring widths of the two wheels (17) are equal to the inner side height of the open groove (71), so as to limit the displacement of the fixing member (13) relative to the annular closed slide rail (16) in a direction perpendicular to the moving direction of the fixing member (13) along the annular closed slide rail (16).

8. A lithium battery drying furnace according to claim 1, characterized in that: It also includes a positioning device, which is used to place each of the vertical supports (14) in a preset loading position in sequence during loading to facilitate loading.

9. A lithium battery drying furnace according to claim 8, characterized in that: The positioning device comprises a positioning column (91) provided on the fixing member (13), and a U-shaped slot (92), wherein an opening of the U-shaped slot (92) is arranged toward the positioning column (91), and the other end of the U-shaped slot (92) opposite to the opening is fixedly connected to a telescopic end of a cylinder, and the fixed end of the cylinder is mounted on the furnace body (11), so that when the positioning column (91) is in a preset position, the cylinder is telescopic to control the U-shaped slot (92) to clamp the positioning column (91) or to move away from the positioning column (91).

10. A lithium battery drying furnace according to claim 9, characterized in that: The orthographic projections of the horizontal accommodation positions (15) on any one of the vertical supports (14) in the vertical direction overlap.

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