A heating plate for drying lithium batteries
By setting a power difference between the heating film in the central area and the surrounding area in the heating plate for lithium battery drying, a composite structure is formed, which solves the problem of uneven heating and achieves temperature uniformity and safety during the lithium battery baking process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN DINGNENG ELECTRONICS TECH
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-03
AI Technical Summary
The heating efficiency of the perimeter of the existing heating plate is lower than that of the center, resulting in poor heating uniformity during the lithium battery baking process.
A heating plate for drying lithium batteries is designed, which uses heating films with different power in the central and surrounding areas. The heating film power in the central and surrounding areas is 1.1 to 1.3 times that of the central area. A composite structure is formed through a vulcanization process to ensure the uniformity of the heating layer and the substrate.
It improves the temperature uniformity during the lithium battery baking process, solves the problem of uneven heating, and ensures the performance stability and safety of lithium batteries.
Smart Images
Figure CN224455345U_ABST
Abstract
Description
Technical Field
[0001] This utility model generally relates to the field of lithium battery technology. More specifically, this utility model relates to a heating plate for drying lithium batteries. Background Technology
[0002] A lithium battery baking heating plate is a heating device specifically designed for the drying and baking processes in lithium battery production. It is primarily used to remove moisture and impurities from inside the battery, ensuring stable battery performance and meeting safety standards. It heats the surface of the lithium battery through full contact, allowing the battery to undergo pretreatment under specific temperature and time conditions.
[0003] Existing heating plates have lower heating efficiency around the perimeter than in the center, resulting in poor heating uniformity in the lithium battery baking process.
[0004] In view of this, there is an urgent need to provide a heating plate for drying lithium batteries to solve the problem. Utility Model Content
[0005] To at least solve one or more of the technical problems mentioned in the background section, this utility model proposes a heating plate for drying lithium batteries.
[0006] Therefore, the present invention provides the following technical solution.
[0007] This utility model discloses a heating plate for drying lithium batteries, comprising: a substrate, the upper surface of which is used to contact the lithium battery, and two layers of silicone are sequentially disposed on the lower surface of the substrate, with a heating layer for providing heat to the substrate between the two silicone layers. The heating layer consists of a first heating film located in the central region and a second heating film located around the central region, wherein the power of the second heating film is 1.1 to 1.3 times that of the first heating film.
[0008] Preferably, the area of the heating layer composed of the first heating film and the second heating film is equal to the area of the substrate.
[0009] Preferably, the first heating film is a single piece of heating film, or it is composed of at least two rectangular heating films spliced together.
[0010] Preferably, the second heating film is formed by splicing together two U-shaped heating films.
[0011] Preferably, the substrate, the two silicone layers, and the first and second heating films located between the two silicone layers are formed into a composite structure through a vulcanization process.
[0012] Preferably, the upper surface of the substrate also has a Teflon coating.
[0013] Preferably, the substrate is made of aluminum.
[0014] The technical solution provided in this application may include the following beneficial effects:
[0015] By utilizing the apparatus described in the above and several embodiments of this utility model, that is, by dividing a substrate area into a central region and a region surrounding the central region, and setting different heating powers for the two regions, with the heating film power in the surrounding region being 1.1 to 1.3 times that in the central region, the problem of the heating plate generating less heat in the surrounding region than in the central region is compensated during the baking of lithium batteries, i.e., the heating of lithium batteries, thereby improving the temperature uniformity of lithium battery baking and solving the defects of the solutions involved in the background art. Attached Figure Description
[0016] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts wherein:
[0017] Figure 1 This is a schematic diagram showing the relative positions of the first heating film and the second heating film according to an embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram illustrating a multi-layer structure according to an embodiment of the present invention;
[0019] Explanation of reference numerals in the attached drawings: 11, substrate; 12, silicone layer; 13, heating layer; 14, first heating film; 15, second heating film; 16, Teflon coating. Detailed Implementation
[0020] Embodiments will now be described with reference to the accompanying drawings. It should be understood that, for the sake of simplicity and clarity, reference numerals may be repeated in the drawings to indicate corresponding or similar elements where deemed appropriate. Furthermore, numerous specific details are set forth in this invention to provide a thorough understanding of the embodiments described herein. However, those skilled in the art will understand that the embodiments described herein can be practiced without these specific details. In other instances, well-known methods, processes, and components have not been described in detail so as not to obscure the embodiments described herein. Moreover, this description should not be construed as limiting the scope of the embodiments described herein.
[0021] According to one embodiment of the present invention, a heating plate for drying lithium batteries is provided, such as... Figure 1 and Figure 2 As shown, it includes: a substrate 11, the upper surface of which is used to contact a lithium battery, and two silicone layers 12 are sequentially disposed on the lower surface of the substrate 11. A heating layer 134 for providing heat to the substrate 11 is disposed between the two silicone layers 12. The heating layer 134 is composed of a first heating film 13 located in the central region and a second heating film 14 located around the central region. The power of the second heating film 14 is 1.1 to 1.3 times that of the power of the first heating film 13.
[0022] The aforementioned substrate 11 serves to provide structural support for the heating plate.
[0023] The two silicone layers 12 serve to isolate the heating layer 134, preventing leakage and improving the safety of the heating plate. Simultaneously, the silicone layers 12 also absorb the thermal expansion and contraction stress of the heating layer 134 during operation, effectively preventing structural cracking.
[0024] The area of the heating layer 134, composed of the first heating film 13 and the second heating film 14, is equal to the area of the substrate 11. It is easy to understand that the first heating film 13 and the second heating film 14 are laid on the same plane and the second heating film 14 surrounds the first heating film 13. The positional relationship between the first heating film 13 and the second heating film 14 is not one of stacking vertically.
[0025] In one embodiment, the first heating film 13 is a single piece of heating film, or it can be composed of at least two rectangular heating films spliced together. Choosing to splice two or more rectangular heating films is mainly due to considerations of excessive area; the choice between a single piece or multiple pieces spliced together can be made according to actual needs.
[0026] In another embodiment, in order to achieve the enclosure of the first heating film 13 by the second heating film 14, the second heating film 14 can be formed by splicing two U-shaped heating films.
[0027] In one embodiment, the substrate 11, the two silicone layers 12, and the first heating film 13 and the second heating film 14 located between the two silicone layers 12 are formed into a composite structure through a vulcanization process. The vulcanization process firmly bonds the substrate 11, the silicone layers 12, and the heating layer 134 together, preventing delamination and forming a heating plate with a certain elasticity and strength. Furthermore, it fills all tiny gaps, sealing the heating layer 134 and preventing moisture, chemical reagents, etc., from penetrating it.
[0028] In some embodiments, the upper surface of the substrate 11 also has a Teflon coating 15. This coating has excellent non-stick properties and strong corrosion resistance, effectively protecting the lithium battery when the heating plate comes into contact with it.
[0029] The substrate 11 is made of aluminum, which can utilize the high thermal conductivity of aluminum to conduct heat evenly and further improve the uniformity of the surface temperature of the heating plate.
[0030] It should be understood that the possible terms "first" or "second," etc., in the claims, specification, and drawings disclosed in this utility model are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "including" used in the specification and claims disclosed in this utility model indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.
[0031] It should also be understood that the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of the disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.
[0032] Although the embodiments of this utility model are described above, the content is merely an example adopted for the purpose of facilitating understanding of this utility model and is not intended to limit the scope and application scenarios of this utility model. Any person skilled in the art can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model; however, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.
Claims
1. A heating plate for drying lithium batteries, characterized in that, include: A substrate (11) has an upper surface for contact with a lithium battery, and two silicone layers (12) are sequentially disposed on the lower surface of the substrate (11). A heating layer (134) for providing heat to the substrate (11) is disposed between the two silicone layers (12). The heating layer (134) consists of a first heating film (13) located in the central region and a second heating film (14) located around the central region. The power of the second heating film (14) is 1.1 to 1.3 times that of the first heating film (13).
2. The heating plate for drying lithium batteries according to claim 1, characterized in that, The area of the heating layer (134), which is composed of the first heating film (13) and the second heating film (14), is equal to the area of the substrate (11).
3. The heating plate for drying lithium batteries according to claim 2, characterized in that, The first heating film (13) is a single piece of heating film, or is composed of at least two rectangular heating films spliced together.
4. The heating plate for drying lithium batteries according to claim 2, characterized in that, The second heating film (14) is made up of two U-shaped heating films spliced together.
5. The heating plate for drying lithium batteries according to claim 1, characterized in that, The substrate (11), two silicone layers (12), and a first heating film (13) and a second heating film (14) located between the two silicone layers (12) form a composite structure through a vulcanization process.
6. The heating plate for drying lithium batteries according to claim 1, characterized in that, The upper surface of the substrate (11) also has a Teflon coating (15).
7. The heating plate for drying lithium batteries according to claim 1, characterized in that, The substrate (11) is made of aluminum.