Needle type heating plate of new energy vehicle heater

Abstract

The utility model discloses a needle type heating plate of a new energy vehicle heater, which relates to the technical field of thick film heaters, and comprises a substrate, a silk-screen printing layer is fixedly connected to the bottom of the substrate, the silk-screen printing layer extends to the top of the substrate and is fixedly connected with a plurality of groups of fins, the plurality of groups of fins are in a water drop shape, and the fins are arranged on the substrate. The upper layer of the substrate is composed of a printed resistance layer and a ceramic insulating layer. According to the needle-shaped heating plate of the new energy vehicle heater, liquid can smoothly flow along the surface of the needle-shaped heating plate due to the shape of the water-drop-shaped fins, and the flowing resistance of the liquid is reduced. In a liquid heater, the water-drop-shaped fins can provide good fluid adaptability for various liquids with different viscosities, such as water, oil, anti-freezing liquid and the like. For example, in an oil heater of an automatic gearbox of an automobile, oil can smoothly flow through the water-drop-shaped fins, energy loss caused by flowing resistance is reduced, and heating efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of thick film heater technology, specifically a needle-shaped heating plate for a new energy vehicle heater. Background Technology

[0002] Thick film heaters are a new type of heating device that uses thick film screen printing technology to print insulating media, heating resistors, and other materials onto a substrate, followed by high-temperature sintering. They offer advantages such as high power density, fast heating speed, high operating temperature, rapid temperature rise, high mechanical strength, small size, easy installation, uniform heating temperature field, long lifespan, energy saving, environmental friendliness, and safety. However, existing thick film heaters still encounter some problems in practical use.

[0003] For example, application number CN201921049553.0 relates to a thick film heater, including a thermally conductive substrate and a thick film heating element disposed on its upper surface. The upper surface of the thick film heating element is provided with a temperature-sensing conductive layer, and a temperature-sensing device of the heating element is electrically connected to the temperature-sensing conductive layer. The temperature-sensing surface of the temperature-sensing device of the heating element abuts against the upper surface of the thick film heating element, which has the characteristic of preventing the thick film heating element from continuing to work under overheating conditions. In the process of use, the internal heater of the existing thick film heater is often strip-shaped. This design is prone to causing local overheating or insufficient heating, and the flow resistance of the liquid is also relatively large.

[0004] To address the aforementioned issues, a needle-shaped heating plate for new energy vehicle heaters is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a needle-shaped heating plate for a new energy vehicle heater. By using this device, the problem of existing thick film heaters, where the internal heater shape is often strip-shaped, is easily caused by local overheating or insufficient heating, and the liquid flow resistance is also relatively large.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a needle-type heating plate for a new energy vehicle heater, comprising a substrate, a screen-printed layer fixedly connected to the bottom of the substrate, the screen-printed layer extending to the top of the substrate and fixedly connected to fins, and multiple sets of fins being provided, the multiple sets of fins being teardrop-shaped, the upper layer of the substrate being composed of a printed resistive layer and a ceramic insulating layer, and an aluminum foil with flux being provided at the connection between the substrate and the fins.

[0007] Preferably, the fins are made of aluminum alloy, and the fin diameter ranges from two to five millimeters, the height is from four to ten millimeters, and the spacing between adjacent fins is between three and ten millimeters.

[0008] Preferably, the screen printing layer includes a heating layer and an insulating layer body, with the insulating layer body respectively disposed on both sides of the heating layer.

[0009] Preferably, the thickness of the substrate is two to three millimeters, which provides support for the screen-printed layer, fins, heating layer, and insulating layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This application proposes a needle-type heating plate for a new energy vehicle heater. The teardrop-shaped fins allow liquid to flow smoothly along their surface, reducing flow resistance. In liquid heaters, the teardrop-shaped fins provide excellent fluid adaptability for liquids of various viscosities, such as water, oil, and antifreeze. For example, in an automatic transmission fluid heater for automobiles, the oil can flow smoothly over the teardrop-shaped fins, reducing energy loss due to flow resistance and improving heating efficiency.

[0012] 2. The needle-shaped heating plate for a new energy vehicle heater proposed in this application enables the liquid to be evenly distributed on the fin surface, avoiding localized overheating or underheating. In heaters requiring precise temperature control of the liquid, such as high-precision liquid heating equipment used in laboratories, teardrop-shaped fins can ensure that the liquid temperature rises evenly throughout the heating process, which is beneficial to the accuracy and stability of the experiment.

[0013] 3. The needle-shaped heating plate for a new energy vehicle heater proposed in this application features teardrop-shaped fins that increase the contact area with the liquid to a certain extent. Furthermore, because the liquid can better cover the fin surface, the utilization rate of the heat exchange area is higher. In industrial liquid heaters, such as large chemical raw material liquid heaters, this efficient utilization of the heat exchange area can reduce the size of the equipment and lower equipment costs while ensuring heating effect.

[0014] 4. The needle-shaped heating plate for a new energy vehicle heater proposed in this application greatly expands the heat dissipation surface area through numerous teardrop-shaped structures. Compared with traditional planar heat dissipation structures, it can achieve more thorough heat exchange with the surrounding liquid, significantly improving heat dissipation efficiency. When the coolant flows through, the large-area teardrop-shaped surface comes into contact with the coolant, quickly absorbing heat, effectively reducing the temperature of the heating substrate, and preventing the coolant from boiling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is another perspective view of the overall structure of this utility model;

[0017] Figure 3This is a front view of the overall structure of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the figure: 1. Substrate; 2. Screen printing layer; 3. Fins; 4. Heating layer; 5. Insulation layer body. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0022] Combination Figures 1-4 A needle-type heating plate for a new energy vehicle heater includes a substrate 1. A screen-printed layer 2 is fixedly connected to the bottom of the substrate 1. The screen-printed layer 2 extends to the top of the substrate 1 and is fixedly connected to fins 3. Multiple sets of fins 3 are provided, and the multiple sets of fins 3 are teardrop-shaped. The upper layer of the substrate 1 is composed of a printed resistive layer and a ceramic insulating layer. A flux-coated aluminum foil is provided at the connection between the substrate 1 and the fins 3.

[0023] The present invention will be further described below with reference to the embodiments. Example

[0024] To address the issues of existing thick-film heaters, where the internal heater shape is often strip-like, leading to localized overheating or underheating, and also causing significant flow resistance, the following solution is disclosed. Please refer to the details. Figures 1-4The fins 3 are made of aluminum alloy, with a diameter ranging from two to five millimeters and a height from four to ten millimeters. The spacing between adjacent fins 3 is between three and ten millimeters. The screen-printed layer 2 includes a heating layer 4 and an insulating layer body 5, with the insulating layer body 5 respectively disposed on both sides of the heating layer 4. The substrate 1 has a thickness of two to three millimeters and provides support for the screen-printed layer 2, fins 3, heating layer 4, and insulating layer body 5. During use, the heating layer 4 operates and generates heat, which can be transferred to the fins 3 through the substrate 1. The arrangement of the fins 3 increases the contact area between the heating layer 4 and the coolant, thereby improving heat transfer efficiency and allowing the liquid to flow smoothly along its surface, reducing flow resistance. The substrate 1, flux-coated aluminum foil, and fins 3 are connected as a single unit using brazing technology. During brazing, the flux in the aluminum foil melts at high temperature, removing oxides and other impurities from the joint interfaces. This creates a reliable metallurgical bond between the aluminum foil, substrate 1, and the heat dissipation structure, ensuring efficient and stable heat transfer from the resistance layer through substrate 1 and aluminum foil to the fins 3. In liquid heaters, the teardrop structure provides excellent fluid adaptability for liquids of varying viscosities, such as water, oil, and antifreeze. For example, in automotive automatic transmission fluid heaters, the fluid flows smoothly through the fins 3, reducing energy loss due to flow resistance, improving heating efficiency, and ensuring uniform liquid distribution on the fin surface, preventing localized overheating or underheating. In heaters requiring precise temperature control, such as high-precision liquid heating equipment in laboratories, the teardrop structure ensures a uniform temperature rise throughout the heating process, improving experimental accuracy and stability. It also increases the contact area with the liquid and, because the liquid better covers the fin surface, increases the utilization rate of the heat exchange area. In industrial liquid heaters, such as large chemical raw material liquid heaters, this efficient utilization of heat exchange area can reduce equipment size and cost while ensuring heating effect. The teardrop-shaped structures have a specific spacing and arrangement, with the distance between adjacent teardrop-shaped structures ranging from three to ten millimeters. This optimized arrangement guides the liquid to form orderly flow channels between the cylindrical array. As the liquid flows, the cylindrical structures continuously disturb the liquid boundary layer, promoting the rapid transfer of heat from the teardrop-shaped structures to the liquid, further enhancing the heat dissipation effect, while ensuring uniform heat absorption by the coolant and avoiding localized overheating that could lead to boiling.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle heater needle type heating plate, comprising a substrate (1), characterized in that: The bottom of the substrate (1) is fixedly connected with a silk screen printing layer (2), the silk screen printing layer (2) extends to the top of the substrate (1) and is fixedly connected with fins (3), the fins (3) are provided in multiple groups, the multiple groups of fins (3) are in the shape of water droplets, the upper layer of the substrate (1) is composed of a printed resistor layer and a ceramic insulating layer, and the connecting part of the substrate (1) and the fins (3) is provided with an aluminum foil with solder.

2. The heater needle plate of a new energy vehicle according to claim 1, characterized in that: The material of the fins (3) is aluminum alloy, the diameter of the fins (3) ranges from 2 to 5 mm, the height of the fins (3) ranges from 4 to 10 mm, and the distance between adjacent fins (3) ranges from 3 to 10 mm.

3. The heater needle plate of claim 2, wherein: The silk screen printing layer (2) comprises a heating layer (4) and an insulating layer body (5), and the insulating layer body (5) is arranged on both sides of the heating layer (4).

4. The heater needle plate of claim 3, wherein: The thickness of the substrate (1) is 2-3 mm, which provides support for the silk screen printing layer (2), the fins (3), the heating layer (4) and the insulating layer body (5).

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