Electrode connection structure of graphene heating sheet

Abstract

The utility model relates to the field of graphene heating sheet, especially graphene heating sheet's electrode connecting structure. The utility model provides such a graphene heating sheet's electrode connecting structure, including protective sleeve, heat insulating plate, lower insulating PI film, graphene heating sheet, upper insulating PI film and heat conducting plate, the heat insulating plate is set up in the bottom of protective sleeve, the lower insulating PI film is set up in the top of heat insulating plate, the graphene heating sheet is set up in the top of lower insulating PI film, the upper insulating PI film is set up in the top of graphene heating sheet, and the heat conducting plate is set up in the top of upper insulating PI film. Through the elastic member rebound and push the slider to move right, the second limit slot on the slider is clamped into the first limit slot of the lower end of the limiting column, realizes mechanical locking, and the upper fixed shell is closely contacted with the lower fixed shell and is fixed, and together constitutes a stable clamping structure, tightly presses the electrode sheet on the conductive expansion layer, and this process can complete reliable electrical and mechanical connection without the aid of other tools, improves the convenience of operation.

Description

Technical Field

[0001] This utility model relates to the field of graphene heating elements, and more particularly to an electrode connection structure for a graphene heating element. Background Technology

[0002] Graphene heating elements are a new type of electrothermal conversion element made of graphene material. They generate heat by exciting the resistive heating effect of graphene through electric current. The core of their effectiveness lies in graphene's unique two-dimensional carbon atom structure and excellent physical properties, such as high electrical conductivity, high thermal conductivity, and excellent mechanical strength. These properties give graphene heating elements advantages in high efficiency, safety, and environmental friendliness during electrothermal conversion.

[0003] Currently, graphene heating elements have been applied in wearable devices, home appliances, and health therapy, demonstrating broad application prospects in these fields. In the manufacturing process of graphene heating devices, the reliability of electrode connections and assembly efficiency have long constrained product performance and production costs. However, traditional electrode connection methods mainly employ bolt crimping or welding, which require external tools. This not only reduces operational convenience but also easily leads to contact pressure attenuation due to thermal expansion and contraction, potentially causing localized overheating or even open circuits, ultimately affecting product stability and lifespan.

[0004] Therefore, an electrode connection structure for graphene heating elements is needed. Utility Model Content

[0005] To overcome the shortcomings of traditional electrode connection methods, which mainly use bolt pressing or welding, these methods require external tools, which not only reduce the convenience of operation, but also easily lead to the attenuation of contact pressure due to thermal expansion and contraction, thereby causing the risk of local overheating or even open circuit, ultimately affecting the stability and service life of the product, this utility model provides an electrode connection structure for graphene heating elements.

[0006] This utility model provides the following technical solution: an electrode connection structure for a graphene heating element, comprising a protective sleeve, a heat insulation plate, a lower insulating PI film, a graphene heating element, an upper insulating PI film, and a heat-conducting plate. The heat insulation plate is disposed at the bottom of the inner part of the protective sleeve, the lower insulating PI film is disposed at the top of the heat insulation plate, the graphene heating element is disposed at the top of the lower insulating PI film, the upper insulating PI film is disposed at the top of the graphene heating element, and the heat-conducting plate is disposed at the top of the upper insulating PI film. It also includes an electrode sheet, an upper fixing shell, a limiting post, a wiring terminal, a slider, and an elastic element. The device consists of a lower fixed shell and wires. Two electrode plates are connected to the front of the graphene heating element. An upper fixed shell is placed on top of the electrode plates. A limit post is fixedly connected to the bottom of the upper fixed shell. A first limit groove is opened at the lower end of the limit post. A lower fixed shell is placed at the bottom of the electrode plates. A terminal block is slidably installed inside the lower fixed shell. A slider is slidably installed inside the lower fixed shell. A second limit groove is opened on the slider. The second limit groove can engage with the first limit groove. Two elastic elements are connected between the slider and the lower fixed shell. Wires are connected to the front of the terminal block.

[0007] To further explain, it also includes anti-foolproof bumps, multiple anti-foolproof grooves are provided on the outside of the wiring terminals, and multiple anti-foolproof bumps are fixedly connected inside the lower fixed housing. The anti-foolproof bumps can be inserted into the anti-foolproof grooves.

[0008] To further explain, it also includes a conductive expansion layer, with a conductive expansion layer provided on the top of the terminal.

[0009] To further explain, both the upper and lower fixing shells have mounting holes on their left and right sides.

[0010] To further explain, it also includes an insulating sleeve, with an insulating sleeve fitted onto the conductor.

[0011] To further explain, the surface of the graphene heating element is coated with an antioxidant alloy layer.

[0012] Compared with the prior art, this utility model provides an electrode connection structure for a graphene heating element, which has the following advantages: 1. The elastic element pushes the slider to move to the right, and the second limiting groove on the slider is engaged with the first limiting groove at the lower end of the limiting post to achieve mechanical locking. The upper fixed shell and the lower fixed shell are in close contact and fixed, forming a stable clamping structure, which tightly presses the electrode sheet onto the conductive expansion layer. This process can complete a reliable electrical and mechanical connection without the need for other tools, improving the convenience of operation.

[0013] 2. By matching the anti-misalignment groove with the anti-misalignment bump, if the wiring terminal is in the wrong direction, the anti-misalignment bump cannot be inserted into the anti-misalignment groove, thus preventing incorrect wiring terminal installation and improving assembly efficiency and reliability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional cross-sectional view of the heat insulation board, the lower insulating PI film, and the graphene heating element of this utility model.

[0016] Figure 3 This is an exploded view of the insulating PI film, heat-conducting plate, and electrode sheet of this utility model.

[0017] Figure 4 This is a three-dimensional structural cross-sectional view of the wiring terminal, slider, and elastic element of this utility model.

[0018] Figure 5 This is an exploded view of the limiting post, conductive expansion layer, and slider of this utility model.

[0019] Figure 6 This is an exploded view of the lower fixing shell and the anti-foolproof protrusion of this utility model.

[0020] The markings in the attached diagram are as follows: 1: Protective sleeve, 2: Heat insulation plate, 3: Lower insulating PI film, 4: Graphene heating element, 5: Upper insulating PI film, 6: Heat-conducting plate, 7: Electrode sheet, 8: Upper fixing shell, 9: Limiting post, 901: First limiting groove, 10: Conductive expansion layer, 11: Wiring terminal, 12: Slider, 1201: Second limiting groove, 13: Elastic element, 14: Lower fixing shell, 15: Anti-fooling groove, 16: Anti-fooling protrusion, 17: Mounting hole, 18: Insulating sleeve, 19: Wire. Detailed Implementation

[0021] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0022] Example 1: An electrode connection structure for a graphene heating element, please refer to [link / reference]. Figures 1-6The system includes a protective sleeve 1, a heat insulation plate 2, a lower insulating PI film 3, a graphene heating element 4, an upper insulating PI film 5, and a heat-conducting plate 6. The heat insulation plate 2 is located at the bottom of the protective sleeve 1. The lower insulating PI film 3 is located on top of the heat insulation plate 2. The graphene heating element 4 is located on top of the lower insulating PI film 3. The upper insulating PI film 5 is located on top of the graphene heating element 4. The heat-conducting plate 6 is located on top of the upper insulating PI film 5. Two electrode plates 7 are connected to the front of the graphene heating element 4. An upper fixing shell 8 is placed on top of the electrode plates 7. A limit post 9 is fixedly connected to the bottom of the upper fixing shell 8. A first limit groove 901 is formed at the lower end of the limit post 9. A lower fixing shell 14 is placed at the bottom of the electrode plates 7. A terminal block 11 is slidably arranged inside the lower fixing shell 14. A slider 12 is slidably arranged inside the lower fixing shell 14. A second limit groove 101 is formed on the slider 12. 201, the second limiting groove 1201 can be engaged with the first limiting groove 901. Two elastic elements 13 are connected between the slider 12 and the lower fixed shell 14. A wire 19 is connected to the front side of the terminal 11. A conductive expansion layer 10 is provided on the top of the terminal. When the graphene heating element 4 heats up, the conductive expansion layer 10 expands due to heat, further increasing the contact pressure with the electrode sheet 7, and avoiding poor contact due to thermal expansion and contraction. The upper fixed shell 8 and the lower fixed shell 14 are equipped with mounting holes 17 on both the left and right sides. The bolts are inserted into the mounting holes 17 to further reinforce the upper fixed shell 8 and the lower fixed shell 14 and improve the stability of the overall structure. An insulating sleeve 18 is provided on the wire 19 to prevent the wire 19 from contacting the outside and causing a short circuit, thereby improving the safety of the device. The surface of the graphene heating element 4 is coated with an anti-oxidation alloy layer to prevent high-temperature oxidation from increasing the contact resistance.

[0023] The assembly of the electrode connection structure begins with sliding the terminal 11, which has the conductive expansion layer 10, into the lower fixed shell 14. Next, the lower fixed shell 14 is moved to a designated position at the bottom of the electrode plate 7, and the upper fixed shell 8 is moved above the electrode plate 7. The slider 12 is pushed to the left until the limiting post 9 aligns with the second limiting groove 1201. During this process, the elastic element 13 is compressed. Then, the upper fixed shell 8 is pushed downwards, causing the limiting post 9 to insert into the lower fixed shell 14. The limiting post 9 passes through the electrode plate 7, the conductive expansion layer 10, and the terminal 11 in sequence. When the limiting post 9 reaches the predetermined depth, the slider 12 is released, and the elastic element 13 rebounds, pushing the slider 12 to the right. The second limiting groove 1201 on the slider 12 engages with the first limiting groove at the lower end of the limiting post 9. The groove 901 achieves mechanical locking. At this time, the upper fixed shell 8 and the lower fixed shell 14 are in close contact and fixed, forming a stable clamping structure. This structure tightly presses the electrode sheet 7 onto the conductive expansion layer 10, ensuring good electrical contact. This process can complete reliable electrical and mechanical connections without the need for other tools, improving the convenience of operation. After assembly, the wire 19 is connected to the power supply equipment through the terminal 11. After power is turned on, the current reaches the electrode sheet 7 through the wire 19, terminal 11, and conductive expansion layer 10, and then flows into the graphene heating element 4 to generate heat. The heat is conducted to the heat-conducting plate 6 through the upper insulating PI film 5 and dissipates heat outward. At the same time, the lower insulating PI film 3 and the heat insulation plate 2 effectively block the heat from being transferred to the bottom of the protective sleeve 1.

[0024] Example 2: Based on Example 1, please refer to... Figure 5 and Figure 6 Four anti-foolproof grooves 15 are provided on the outside of the terminal block 11, and three anti-foolproof protrusions 16 are fixedly connected inside the lower fixed shell 14. The anti-foolproof protrusions 16 can be inserted into the anti-foolproof grooves 15.

[0025] The anti-fooling groove 15 of the terminal block 11 matches the anti-fooling protrusion 16 inside the lower fixed housing 14. If the terminal block 11 is in the wrong direction, the anti-fooling protrusion 16 cannot be inserted into the anti-fooling groove 15, thus preventing the terminal block 11 from being installed incorrectly and improving assembly efficiency and reliability.

[0026] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. An electrode connection structure for a graphene heating element, comprising a protective sleeve (1), a heat insulation plate (2), a lower insulating PI film (3), a graphene heating element (4), an upper insulating PI film (5), and a heat-conducting plate (6), wherein the heat insulation plate (2) is disposed at the bottom of the inner part of the protective sleeve (1), the lower insulating PI film (3) is disposed at the top of the heat insulation plate (2), the graphene heating element (4) is disposed at the top of the lower insulating PI film (3), the upper insulating PI film (5) is disposed at the top of the graphene heating element (4), and the heat-conducting plate (6) is disposed at the top of the upper insulating PI film (5), characterized in that: It also includes electrode plates (7), upper fixing shell (8), limiting post (9), wiring terminal (11), slider (12), elastic element (13), lower fixing shell (14) and wire (19). Two electrode plates (7) are connected to the front side of the graphene heating element (4). The upper fixing shell (8) is placed on the top of the electrode plate (7). The limiting post (9) is fixedly connected to the bottom of the upper fixing shell (8). The lower end of the limiting post (9) is provided with a first limiting groove (901). The bottom of the electrode plate (7) A lower fixed shell (14) is placed inside, and a terminal block (11) is slidably arranged inside the lower fixed shell (14). A slider (12) is slidably arranged inside the lower fixed shell (14). A second limiting groove (1201) is opened on the slider (12). The second limiting groove (1201) can be engaged with the first limiting groove (901). Two elastic members (13) are connected between the slider (12) and the lower fixed shell (14). A wire (19) is connected to the front side of the terminal block (11).

2. The electrode connection structure of the graphene heating element according to claim 1, characterized in that: It also includes anti-fooling protrusions (16), and multiple anti-fooling grooves (15) are provided on the outside of the wiring terminal (11). Multiple anti-fooling protrusions (16) are fixedly connected inside the lower fixed shell (14), and the anti-fooling protrusions (16) can be inserted into the anti-fooling grooves (15).

3. The electrode connection structure of a graphene heating element according to claim 2, characterized in that: It also includes a conductive expansion layer (10), and the top of the terminal is provided with a conductive expansion layer (10).

4. The electrode connection structure of the graphene heating element according to claim 3, characterized in that: The upper fixed shell (8) and the lower fixed shell (14) have mounting holes (17) on both the left and right sides.

5. The electrode connection structure of a graphene heating element according to claim 4, characterized in that: It also includes an insulating sleeve (18), and the conductor (19) is fitted with an insulating sleeve (18).

6. The electrode connection structure of a graphene heating element according to claim 5, characterized in that: The graphene heating element (4) is coated with an antioxidant alloy layer.

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