Battery cell drying clamp and drying device

Abstract

The utility model discloses a battery cell drying clamp and a drying device, and relates to the technical field of drying equipment. The frame body forms an accommodating space for accommodating a battery cell; the at least two limiting assemblies are arranged in the accommodating space in parallel; the limiting assembly comprises a guide part, at least two movable parts capable of reciprocating in the length direction of the guide part are arranged on the guide part, limiting parts are arranged on the movable parts, a limiting space used for limiting movement of a battery cell is formed between any two adjacent limiting parts, and the movable parts and the limiting parts are connected through locking parts. When the movable part moves to a target position, the locking part can drive the movable part and the limiting part to be close to each other, so that the movable part and the limiting part are clamped on the guide part. The battery cell clamp aims at enabling an existing battery cell clamp to adapt to different battery cells and widening the application range of the battery cell clamp.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a battery cell drying fixture and drying device. Background Technology

[0002] Lithium-ion batteries, as the core energy source in modern electric vehicles, consumer electronics, and energy storage systems, have become a key focus of global technological innovation due to the rapid development of the new energy industry. The manufacturing process of lithium-ion batteries is becoming increasingly complex, and their performance stability, reliability, and safety directly affect battery lifespan and equipment efficiency. To ensure efficient battery operation, the baking and drying processes during production are crucial.

[0003] Currently, the most common drying and baking processes in lithium battery production employ vacuum baking ovens for contact vacuum baking and drying. This process involves placing the lithium battery to be processed in a specialized fixture, where a heating plate within the fixture heats the battery surface, thus completing the baking and drying process. The battery assembly is then placed into a vacuum drying chamber for heating in a vacuum environment. The heating plate is connected to an electrical connection within the drying chamber to provide a heat source, causing solvents or moisture within the lithium battery to evaporate through contact heating.

[0004] However, in existing heating devices, components such as the heat-conducting plates and clamps of the oven need to be customized according to the lithium battery model. Different lithium battery models require different heat-conducting plates and clamps, and these components need to be replaced when the lithium battery dimensions change. This replacement process is labor-intensive and time-consuming, severely impacting the flexibility and efficiency of the production line, especially during mass production and lithium battery model changes, often leading to a significant drop in production efficiency.

[0005] Therefore, how to adapt existing battery cell clamps to different battery cells and improve the applicability of battery cell clamps has become an urgent technical problem to be solved. Utility Model Content

[0006] The main purpose of this utility model is to provide a battery cell drying fixture and drying device, which aims to adapt the existing battery cell fixture to different battery cells and improve the applicability of the battery cell fixture.

[0007] To achieve the above objectives, this utility model proposes a battery cell drying fixture, comprising:

[0008] The frame body forms an accommodating space for placing battery cells; and

[0009] At least two limiting components are arranged side by side within the accommodating space;

[0010] The limiting component includes: a guide member, on which at least two movable members are provided that can reciprocate along the length direction of the guide member, and a limiting member is provided on the movable member. A limiting space for limiting the movement of the battery cell is formed between any two adjacent limiting members. The movable members and the limiting members are connected by a locking member. When the movable member moves to the target position, the locking member can drive the movable member and the limiting member to move closer to each other so that the movable member and the limiting member are clamped on the guide member.

[0011] The battery cell drying fixture features a simple structure, good stability, and convenient operation. Through the coordinated use of movable and limiting components, the fixture's limiting space can be adjusted according to the size of different battery cells, adapting to the needs of various specifications. Since the limiting space within the fixture is formed by the mutual adjustment of the movable and limiting components, it possesses strong flexibility and adaptability.

[0012] In one embodiment of this application, the guide member is recessed inward from top to bottom to form a groove. The width of the bottom of the groove is greater than the width of the groove opening. The movable member is disposed in the groove. The width of the movable member is greater than the width of the groove opening. The limiting member is disposed above the groove. The locking member passes through the limiting member, passes through the groove opening, and is connected to the movable member.

[0013] The sliding groove design allows the moving part to move precisely within the groove, and the dimensional fit between the moving part and the groove opening ensures the stability and smoothness of the moving part's movement. Meanwhile, the limiting component is connected to the moving part via a locking component, enabling precise control of the clamping force when needed, thus improving the reliability of the cell limiting.

[0014] In one embodiment of this application, the framework body includes:

[0015] The frame is formed by connecting the first, second, third, and fourth uprights end to end; and

[0016] At least one support rod, with its first end connected to the bottom of the first upright plate and its second end connected to the bottom of the third upright plate, is used to support the battery cell; wherein, the first end of the guide of the limiting component is connected to the first upright plate and the second end of the guide of the limiting component is connected to the third upright plate.

[0017] The battery cell drying fixture features a more robust and stable frame structure, providing solid support for the limiting components. The support rods effectively support the battery cells, ensuring stable placement within the fixture and preventing displacement during operation.

[0018] In one embodiment of this application, a first crossbeam is provided on the side of the top of the support rod near the first upright plate, and a second crossbeam is provided on the side of the top of the support rod near the third upright plate. The first end of the guide rod of the limiting component abuts against the first crossbeam, and the second end of the guide rod of the limiting component abuts against the second crossbeam.

[0019] The combination structure of the support rod and crossbeam of the battery cell drying fixture provides additional stability, making the fixture more robust and reliable during operation.

[0020] In one embodiment of this application, a positioning strip is provided at the opening of the slide, the positioning strip is located between the movable member and the limiting member, and the positioning strip is provided with a notch through which the locking member can pass.

[0021] The battery cell drying fixture effectively enhances the fit accuracy between the moving parts and the limiting parts by setting a positioning strip at the opening of the slide groove, so that the moving parts and the limiting parts can be accurately positioned.

[0022] In one embodiment of this application, at least one surface of the limiting member, the support rod, the first crossbeam, and the second crossbeam is formed with a rough layer.

[0023] At least one surface of the limiting component, support rod, first crossbeam, and second crossbeam is formed with a roughened layer. The roughened layer can be formed on the surface of the above components through processes such as sandblasting, coating, and etching. Its main function is to increase the friction between the components, thereby improving the stability and wear resistance of the contact surface.

[0024] This application also discloses a drying apparatus, including a drying chamber;

[0025] The lid is placed on the drying chamber to create a sealed space inside the drying chamber.

[0026] A heating element, located inside the drying chamber, for generating heat; and a cell drying fixture as described above.

[0027] The drying equipment provides a stable, enclosed drying environment, ensuring that the battery cells are heated evenly and precisely during the drying process through a sealed enclosure and efficient heating components.

[0028] In one embodiment of this application, the heating assembly includes:

[0029] Support plate;

[0030] The heating film is laid flat on the support plate;

[0031] At least two heat-conducting plates are disposed on the heating film, with a gap between any two adjacent heat-conducting plates; and

[0032] A Teflon layer covers the upper surface of the heat-conducting plate. When the battery drying fixture containing the battery cells is placed on the heating assembly, the battery cells adhere to the Teflon layer.

[0033] The heating component, through the combination of a heating film, a heat-conducting plate, and a Teflon layer, can provide a more uniform and stable heating effect.

[0034] In one embodiment of this application, the heating film includes:

[0035] membrane body, and

[0036] The heat-generating zone is evenly distributed within the membrane to generate uniform heat.

[0037] The heating membrane can provide uniform and stable heat throughout the heating process through the membrane body and the uniformly distributed heating element.

[0038] In one embodiment of this application, a negative pressure pump is connected to the drying chamber, which, when the drying chamber is in a sealed state, can extract gas from the chamber to create a negative pressure environment. Through its connection to the negative pressure pump, the drying chamber can effectively expel air from its interior in a sealed state, creating a negative pressure environment. The formation of this negative pressure environment significantly improves drying efficiency, allowing the battery cells to complete the drying process in a shorter time, while simultaneously preventing the influence of moisture and impurities in the air on the battery cells, thus enhancing the drying effect.

[0039] The battery cell drying fixture employing the above technical solution features a simple structure, good stability, and convenient operation. Through the coordinated use of movable and limiting components, the fixture's limiting space can be adjusted according to the size of different battery cells, adapting to the needs of various battery cell specifications. Since the limiting space within the fixture is formed by the mutual adjustment of the movable and limiting components, it possesses strong flexibility and adaptability. Attached Figure Description

[0040] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0041] Figure 1 This is a three-dimensional structural diagram of the battery cell drying fixture of this utility model;

[0042] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0043] Figure 3 This is a schematic diagram of the drying device.

[0044] 11. First upright plate; 12. Second upright plate; 13. Third upright plate; 14. Fourth upright plate; 20. Support rod; 30. On the second crossbeam; 40. Limiting assembly; 41. Limiting component; 42. Guide component; 43. Locking component; 44. Positioning strip; 51. Drying chamber body; 52. Chamber cover; 60. Heating assembly; 100. Battery cell drying fixture. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0046] like Figures 1 to 2 As shown, in order to achieve the above objectives, this utility model proposes a battery cell drying fixture 100, comprising:

[0047] The frame body forms an accommodating space for placing battery cells; and

[0048] At least two limiting components 40 are arranged side by side within the accommodating space;

[0049] The limiting component 40 includes: a guide member 42, on which at least two movable members are provided that can reciprocate along the length direction of the guide member 42, and a limiting member 41 is provided on the movable member. A limiting space for limiting the movement of the battery cell is formed between any two adjacent limiting members 41. The movable member and the limiting member 41 are connected by a locking member 43. When the movable member moves to the target position, the locking member 43 can drive the movable member and the limiting member 41 to move closer to each other, so that the movable member and the limiting member 41 are clamped on the guide member 42.

[0050] Specifically, the battery cell drying fixture 100 includes a frame body and at least two limiting components 40. The frame body is an integral structure, and its shape and size are designed to accommodate multiple battery cells. The at least two limiting components 40 are arranged side by side within the accommodating space.

[0051] Each limiting component 40 includes a guide member 42 and a movable member. The guide member 42 is provided with at least two movable members that can reciprocate along the length direction of the guide member 42. The movable members can move freely along the length direction of the guide member 42, and the movement can be achieved by setting a slide groove or other guiding mechanism. Each movable member is provided with a limiting member 41, and the limiting member 41 is connected to the movable member through a locking member 43.

[0052] When the movable component moves on the guide 42, the limiting member 41 on the movable component forms a limiting space with the adjacent limiting member 41. Each limiting member 41 is connected to the movable component through a locking member 43, which fixes the position of the limiting member 41. When it is necessary to restrict the battery cell, the operator can adjust the position of the locking member 43 to move the movable component on the guide 42 to the target position. When the movable component moves to the target position, the locking member 43 drives the movable component and the limiting member 41 to move closer to each other, thereby clamping the movable component and the limiting member 41 on the guide 42, thus realizing the adjustment of the size of the limiting space and supporting battery cells of different sizes.

[0053] Using the above technical solution, the battery cell drying fixture 100 features a simple structure, good stability, and convenient operation. Through the coordinated use of the movable part and the limiting part 41, the limiting space of the fixture can be adjusted according to the size of different battery cells, adapting to the needs of various battery cell specifications. Since the limiting space within the fixture is formed by the mutual adjustment of the movable part and the limiting part 41, it has strong flexibility and adaptability.

[0054] In one embodiment of this application, the guide member 42 is recessed inward from top to bottom to form a groove. The width of the bottom of the groove is greater than the width of the groove opening. The movable member is disposed in the groove. The width of the movable member is greater than the width of the groove opening. The limiting member 41 is disposed above the groove. The locking member 43 passes through the limiting member 41, passes through the groove opening, and is connected to the movable member.

[0055] Specifically, the guide member 42 is recessed inward from top to bottom to form a groove, the bottom width of which is greater than the width of the groove opening. This groove design ensures that the moving part can slide smoothly within the groove. The width of the moving part is greater than the width of the groove opening; this design ensures that the moving part is securely embedded in the groove, preventing it from coming out during sliding.

[0056] A limiting member 41 is provided above the movable part, and the limiting member 41 is connected to the movable part by a locking member 43. The locking member 43 passes through the limiting member 41, passes through the slide groove opening, and connects to the movable part, ensuring a tight fit between the movable part and the limiting member 41. When the movable part moves to the target position, the locking member 43 will drive the movable part and the limiting member 41 to move closer to each other, thereby effectively fixing it on the guide member 42.

[0057] By adopting the above technical solution, the sliding groove design allows the movable part to move precisely within the groove, and the dimensional fit between the movable part and the groove opening ensures the stability and smoothness of the movable part's movement. Simultaneously, the limiting member 41 is connected to the movable part via the locking member 43, enabling precise control of the clamping force when needed, thus improving the reliability of the battery cell constraint.

[0058] In one embodiment of this application, the framework body includes:

[0059] The frame is formed by connecting the first upright plate 11, the second upright plate 12, the third upright plate 13, and the fourth upright plate 14 end to end; and

[0060] At least one support rod 20, with its first end connected to the bottom of the first upright plate 11 and its second end connected to the bottom of the third upright plate 13, is used to support the battery cell; wherein, the first end of the guide member 42 of the limiting component 40 is connected to the first upright plate 11 and the second end of the guide member 42 of the limiting component 40 is connected to the third upright plate 13.

[0061] Specifically, the frame body consists of four upright plates: a first upright plate 11, a second upright plate 12, a third upright plate 13, and a fourth upright plate 14. These four upright plates are connected end-to-end to form a rectangular frame structure. Each upright plate of the frame is precisely designed and manufactured to ensure that the entire frame has sufficient strength and stability to support the weight of the battery cell and prevent deformation of the fixture during operation. An internal space is formed within the frame body, within which the battery cell can be stably placed and subjected to drying treatment.

[0062] Preferably, there are four support rods 20 in this application. For ease of explanation, this application uses one support as an example. The first end of the support rod 20 is connected to the bottom of the first upright plate 11, and the second end is connected to the bottom of the third upright plate 13. The support rod 20 forms a support structure within the frame to support the battery cell placed in the frame. The design of the support rod 20 allows the battery cell to be stably placed in the fixture.

[0063] The first end of the guide member 42 of the limiting assembly 40 is connected to the first upright plate 11, and the second end is connected to the third upright plate 13. The guide member 42 of the limiting assembly 40 is fixed in the frame body in this way, forming a structure adapted to the cell housing space. As the core component of the limiting assembly 40, the guide member 42 plays the role of guiding the movement of the moving parts, ensuring that the limiting assembly 40 can achieve precise limiting action within the frame.

[0064] By adopting the above technical solution, the frame structure of the battery cell drying fixture 100 is more robust and stable, providing solid support for the limiting component 40. The support rod 20 effectively supports the battery cell, enabling it to be stably placed in the fixture and preventing displacement during operation.

[0065] In one embodiment of this application, a first crossbeam is provided on the top of the support rod 20 near the first upright plate 11, and a second crossbeam is provided on the top of the support rod 20 near the third upright plate 13. The first end of the guide rod of the limiting component 40 abuts against the first crossbeam, and the second end of the guide rod of the limiting component 40 abuts against the second crossbeam 30.

[0066] Specifically, the top of the support rod 20 of the battery cell drying fixture 100 is provided with a first crossbeam on the side near the first vertical plate 11, and the top of the support rod 20 is provided with a second crossbeam on the side near the third vertical plate 13.

[0067] The first end of the guide rod of the limiting assembly 40 abuts against the first crossbeam, and the second end abuts against the second crossbeam 30. The two ends of the guide rod, through contact with the crossbeams, form a stable support structure. Due to the abutment relationship between the guide rod and the first and second crossbeams, the guide rod can maintain a stable position, preventing displacement or instability during use.

[0068] By adopting the above technical solution, the cooperation structure between the support rod 20 and the crossbeam of the battery cell drying fixture 100 provides additional stability, making the fixture more robust and reliable during operation.

[0069] In one embodiment of this application, a positioning strip 44 is provided at the opening of the slide, the positioning strip 44 is located between the movable member and the limiting member 41, and the positioning strip 44 is provided with a notch through which the locking member 43 can pass.

[0070] Specifically, a positioning strip 44 is provided at the opening of the chute, and the positioning strip 44 is located between the movable part and the limiting part 41. The positioning strip 44 facilitates the positioning of the movable part, allowing it to move to a predetermined position.

[0071] The positioning bar 44 has a notch through which the locking member 43 can pass. The notch is designed to facilitate the passage of the locking member 43 and fix the position of the movable member and the limiting member 41. When the movable member and the limiting member 41 move to the target position, the locking member 43 passes through the notch through the positioning bar 44 and ensures that the relative position between the movable member and the limiting member 41 remains unchanged through the locking force.

[0072] By adopting the above technical solution, the battery cell drying fixture 100 effectively enhances the fit accuracy between the moving part and the limiting part 41 by setting a positioning strip 44 at the opening of the slide groove, so that the moving part and the limiting part 41 can be accurately positioned.

[0073] In one embodiment of this application, at least one of the limiting member 41, the support rod 20, the first crossbeam, and the second crossbeam has a roughened layer formed on its surface.

[0074] Specifically, at least one surface of the limiting member 41, the support rod 20, the first crossbeam, and the second crossbeam is formed with a rough layer. The rough layer can be formed on the surface of the above components through processes such as sandblasting, coating, and etching. Its main function is to increase the friction between the components to improve the stability and wear resistance of the contact surface.

[0075] like Figure 3 As shown, this application also discloses a drying apparatus, including a drying chamber 51;

[0076] The lid 52 is placed on the drying chamber 51 to create a sealed space inside the drying chamber 51.

[0077] A heating element 60, located inside the drying chamber 51, is used to generate heat; and a cell drying fixture 100 as described above.

[0078] Specifically, a battery cell drying device includes a drying chamber 51, a chamber cover 52, a heating element 60, and the aforementioned battery cell drying fixture 100. The drying chamber 51 has a sealed interior space for accommodating the battery cell drying fixture 100 and the battery cells to be dried. The chamber structure is made of high-temperature resistant and corrosion-resistant materials, effectively maintaining the temperature and humidity in the drying environment to ensure the battery cells achieve the desired drying effect.

[0079] The lid 52 is located on the top of the drying chamber 51 and is used to seal the opening of the drying chamber 51. When the lid 52 is closed, a sealed space is formed inside the drying chamber 51, preventing outside air from entering and thus avoiding interference with heat and humidity control during the drying process. The lid 52 and the chamber body are connected by a sealing ring or other sealing device, making the sealed space more airtight and further improving drying efficiency.

[0080] The heating element 60 is located inside the drying chamber 51 and is mainly used to generate heat to dry the battery cells. The heating element 60 can take the form of a heating film, heating tube, hot air circulation system, etc., to provide a stable heat source according to different drying requirements. The layout of the heating element 60 and the chamber allows heat to be evenly distributed throughout the enclosed space, ensuring that the battery cells are heated evenly during the drying process, thereby achieving the best drying effect.

[0081] The combination of the battery cell drying fixture 100 and the heating component 60 in the aforementioned technical solution makes the battery cell more stable during the drying process. The battery cell drying fixture 100, through its stable restraint structure and precise adjustment function, ensures that the battery cell does not shift or get damaged during heating, thereby improving the safety and reliability of the entire drying process.

[0082] By adopting the above technical solution, the drying device can provide a stable and closed drying environment, and through the sealed box and the high-efficiency heating component 60, it can ensure that the battery cells are heated evenly and precisely during the drying process.

[0083] In one embodiment of this application, the heating assembly 60 includes:

[0084] Support plate;

[0085] The heating film is laid flat on the support plate;

[0086] At least two heat-conducting plates are disposed on the heating film, with a gap between any two adjacent heat-conducting plates; and

[0087] A Teflon layer covers the upper surface of the heat-conducting plate. When the battery cell drying fixture 100 containing the battery cell is placed on the heating assembly 60, the battery cell adheres to the Teflon layer.

[0088] Specifically, the heating assembly 60 includes a support plate, a heating film, a heat-conducting plate, and a Teflon layer, designed to provide a stable and uniform heating effect. The support plate is located at the bottom of the heating assembly 60 and serves to support the entire assembly. The support plate is made of a material with high thermal stability and strong load-bearing capacity to ensure that it will not deform due to heat during operation. The support plate is fixedly connected to the drying chamber 51 to ensure the stable operation of the heating assembly 60.

[0089] The heating film is laid flat on the support plate, serving as one of the heat sources for the heating assembly 60. Heating strips are evenly distributed on the heating film; these strips can be heated by electric current, and their uniform distribution ensures a more even temperature distribution, thereby improving the drying effect. Compared to traditional heating tubes, the heating film offers advantages such as faster heating speed, more uniform temperature, and energy savings.

[0090] At least two heat-conducting plates are disposed on the heating film, with gaps between them. The heat-conducting plates are made of a highly thermally conductive material, effectively and rapidly transferring the heat generated by the heating film to the battery cell drying fixture 100. The gap design allows heat to be evenly distributed to the heating area through convection or radiation, preventing excessive heat concentration and ensuring uniform heating of the battery cell. Furthermore, the heat-conducting plate design improves heat conduction efficiency, enabling the heat from the heating film to be distributed more quickly and evenly to the drying fixture and the battery cell.

[0091] A Teflon layer covers the upper surface of the heat-conducting plate, serving as the contact surface between the battery cell and the heat-conducting plate. Teflon possesses excellent high-temperature resistance, low friction characteristics, and good insulation, effectively preventing direct contact between the battery cell and the heat-conducting plate, thus avoiding damage to the battery cell due to overheating. The low friction characteristics of the Teflon layer ensure that the battery cell will not be damaged due to excessive friction during the drying process.

[0092] By adopting the above technical solution, the heating component 60 can provide a more uniform and stable heating effect through the combination of the heating film, the heat-conducting plate and the Teflon layer.

[0093] In one embodiment of this application, the heating film includes:

[0094] membrane body, and

[0095] The heat-generating zone is evenly distributed within the membrane to generate uniform heat.

[0096] Specifically, the heating elements are evenly distributed throughout the membrane body. The heating elements are the core component of the heating membrane, responsible for generating heat. The distribution design of the heating elements ensures good uniformity in the heating process of the membrane. By evenly arranging the heating elements, excessive heat concentration in a particular area can be effectively avoided, reducing problems such as localized overheating or uneven cooling.

[0097] By adopting the above technical solution, the heating film can provide uniform and stable heat throughout the heating process through the film body and the uniformly distributed heating element.

[0098] In one embodiment of this application, a negative pressure pump is connected to the drying chamber 51, which can extract the gas inside the chamber to form a negative pressure environment when the drying chamber 51 is in a sealed state.

[0099] Specifically, a negative pressure pump is connected to the drying chamber 51. The function of the negative pressure pump is to extract the gas inside the drying chamber 51 when it is in a sealed state, thereby creating a negative pressure environment. This negative pressure pump is connected to the drying chamber 51 via a connecting pipe, effectively removing air from the chamber during the drying process, reducing the air pressure inside, and creating a negative pressure state. This negative pressure environment significantly accelerates the drying process, improves the drying efficiency of the battery cells, reduces drying time, and also prevents moisture in the air from affecting the battery cells, thus improving the drying effect.

[0100] By adopting the above technical solution, the drying chamber 51, connected to a negative pressure pump, can effectively expel air from inside the chamber in a sealed state, creating a negative pressure environment. The formation of this negative pressure environment significantly improves drying efficiency, allowing the battery cells to complete the drying process in a shorter time, while also preventing the influence of moisture and impurities in the air on the battery cells, thus enhancing the drying effect.

[0101] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery cell drying fixture, characterized in that, The application relates to a battery drying clamp. The battery drying clamp comprises a frame body, which forms a containing space for placing a battery cell; and at least two limiting assemblies arranged in parallel in the containing space. The limiting assembly comprises a guide piece, at least two movable pieces reciprocally moving along the length direction of the guide piece arranged on the guide piece, a limiting piece arranged on the movable piece, a limiting space for limiting the movement of the battery cell formed between any two adjacent limiting pieces, and a locking piece connecting the movable piece and the limiting piece, which drives the movable piece and the limiting piece to approach each other when the movable piece moves to a target position, so that the movable piece and the limiting piece are clamped on the guide piece. The guide piece is recessed inward from the top to the bottom to form a sliding groove, the width of the bottom of the sliding groove is greater than the width of the opening of the sliding groove, the movable piece is arranged in the sliding groove, the width of the movable piece is greater than the width of the opening of the sliding groove, the limiting piece is arranged above the sliding groove, and the locking piece penetrates through the limiting piece and is connected to the movable piece through the opening of the sliding groove. The frame body comprises a frame formed by sequentially connecting a first vertical plate, a second vertical plate, a third vertical plate and a fourth vertical plate in a head-tail mode; and at least one supporting rod, the first end of which is connected to the bottom of the first vertical plate, and the second end of which is connected to the bottom of the third vertical plate, for supporting the battery cell; wherein the first end of the guide piece of the limiting assembly is connected to the first vertical plate, and the second end of the guide piece of the limiting assembly is connected to the third vertical plate.

2. The cell drying fixture of claim 1, wherein, The top of the supporting rod is provided with a first cross beam on the side close to the first vertical plate, and the top of the supporting rod is provided with a second cross beam on the side close to the third vertical plate, the first end of the guide rod of the limiting assembly abuts against the first cross beam, and the second end of the guide rod of the limiting assembly abuts against the second cross beam.

3. The cell drying fixture of claim 2, wherein, The opening of the sliding groove is provided with a positioning strip between the movable piece and the limiting piece, and the positioning strip is provided with a gap through which the locking piece penetrates. At least one surface of the limiting piece, the supporting rod, the first cross beam and the second cross beam is formed with a rough layer. The application further relates to a drying box body, a box cover arranged on the drying box body to form a closed space in the drying box body, a heating assembly arranged in the drying box body for generating heat, and the battery drying clamp.

4. The cell drying fixture of claim 3, wherein, The heating assembly comprises a supporting plate, a heating film laid on the supporting plate, at least two heat-conducting plates arranged on the heating film, a gap left between any two adjacent heat-conducting plates, and a Teflon layer covering the upper surface of the heat-conducting plate.

5. The cell baking fixture of claim 2, wherein, The heating film comprises a film body and a heating band uniformly distributed in the film body to generate uniform heat.

6. The cell drying fixture of claim 3, wherein, The drying box body is connected with a negative pressure pump which can pump out the gas in the drying box body to form a negative pressure environment when the drying box body is in a closed state.

7. A drying apparatus, characterized by ​ ​ ​ 8. The drying apparatus of claim 7, wherein ​ ​ ​ ​ ​ 9. The drying apparatus of claim 8, wherein ​ ​ ​ 10. The drying apparatus of claim 7, wherein ​

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