A new energy automobile is with round tube film heating assembly

Abstract

The utility model discloses a kind of round tube film heating components for new energy vehicles, it is related to new energy vehicle technical field, including flange, two groups of round tube film heating mechanisms are installed on flange;Two groups of round tube film heating mechanism all include stainless steel pipe, two groups of stainless steel pipe one group is water inlet pipe, another group is water outlet pipe, the outer layer of stainless steel pipe is wrapped with insulating layer, the outside of insulating layer is installed with conductor layer, the outside of conductor layer is installed with resistance layer, the outside of resistance layer is installed with envelope layer;Two groups of round tube film heating mechanism between installation have electrode piece;The end of two groups of stainless steel pipe is connected with fixed support by laser welding. The component adopts multilayer composite film structure and internal spoiler design, combined with the high stability of ruthenium resistance material, the thermal efficiency is greatly improved, the application of laser welding and reflow soldering eliminates the defects of traditional wire harness connection, and the differentiation selection of 304L and 430 stainless steel balances the corrosion resistance and heat conduction demand.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle technology, specifically, it relates to a circular tube membrane heating component for new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the performance of the in-vehicle heating system has become one of the core factors affecting the driving experience and the vehicle's range. Traditional gasoline vehicles can rely on the waste heat generated by the engine to heat the interior without consuming additional energy; however, new energy vehicles do not have engine waste heat to utilize and must be equipped with an independent electric heating system to meet the winter heating needs of the vehicle interior.

[0003] Currently, mainstream in-vehicle heating solutions for new energy vehicles include traditional PTC heaters, heat pump systems, and membrane heating mechanisms. Among these, membrane heating mechanisms, due to their relatively compact size and fast heating response, are gradually becoming an important research and development direction for in-vehicle heating systems in new energy vehicles. However, existing membrane heating mechanisms still have the following problems in practical applications: The heating element and the fluid channel have low heat exchange efficiency, resulting in large energy loss; the connection parts are mostly connected by traditional welding or wire harness, which are prone to poor sealing or excessive contact resistance; the material selection is not reasonable, and the performance is prone to degradation in high temperature and corrosive environment, resulting in low power density per unit volume.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies.

[0005] Therefore, in order to solve the above problems, this utility model provides a circular tube membrane heating component for new energy vehicles. Utility Model Content

[0006] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a circular tube membrane heating component for new energy vehicles.

[0007] The objective of this utility model can be achieved through the following technical solutions: A circular tube membrane heating assembly for new energy vehicles includes a flange on which two sets of membrane heating mechanisms are mounted. Both sets of the circular tube membrane heating mechanism include stainless steel tubes. One set of the stainless steel tubes is an inlet pipe, and the other set is an outlet pipe. The outer layer of the stainless steel tube is wrapped with an insulating layer. A conductor layer is installed on the outside of the insulating layer. A resistance layer is installed on the outside of the conductor layer. An encapsulation layer is installed on the outside of the resistance layer. Electrodes are installed between the two sets of the circular tube membrane heating mechanisms; Both sets of stainless steel pipes have fixed brackets connected to their ends by laser welding, and a lower end cap is connected to one side of the fixed bracket by laser welding.

[0008] As a preferred embodiment of this utility model, a sealing plate is installed on one side of the flange, and the sealing plate connects the flange to the outer shell by bolts. Two sets of stainless steel joints are connected to the flange by laser welding, and the two sets of stainless steel joints are respectively connected to two sets of stainless steel pipes.

[0009] As a preferred embodiment of this utility model, the stainless steel connector is made of 304L stainless steel material by stamping, and the stainless steel pipe is made of 430 stainless steel material.

[0010] In a preferred embodiment of this invention, the conductor layer is made of silver, a temperature sensor is mounted on the conductor layer by reflow soldering, and the conductive electrode sheet on the electrode is connected to the conductor layer by reflow soldering.

[0011] As a preferred embodiment of this invention, the resistive layer is composed of ruthenium resistors.

[0012] As a preferred embodiment of this invention, the encapsulation layer is made of a ceramic-glass-silica composite material.

[0013] As a preferred embodiment of this utility model, a turbulence column is installed inside the stainless steel tube.

[0014] As a preferred technical solution of this utility model, the fixed bracket and the lower end cover are both made of 304L stainless steel by stamping. The inner wall of the lower end cover and the port of the stainless steel pipe form an annular flow channel, which connects the inner cavity of the water inlet pipe and the water outlet pipe to realize the diversion and flow of coolant.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, a multi-layer composite film structure and internal turbulence design are adopted, combined with the high stability of ruthenium resistor material, which greatly improves the thermal efficiency.

[0016] 2. In this utility model, the application of laser welding and reflow soldering eliminates the defects of traditional wire harness connections, and the differentiated selection of 304L and 430 stainless steel balances the requirements for corrosion resistance and thermal conductivity.

[0017] 3. In this utility model, the overall solution is compact, easy to install, and has a high power density per unit volume, which can adapt to the complex working environment of new energy vehicles and significantly improve the reliability and economy of the heating system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the present invention.

[0020] Figure label: 1. Sealing plate; 2. Flange; 3. Stainless steel joint; 4. Bolt; 5. Circular tube membrane heating mechanism; 51. Stainless steel tube; 52. Insulation layer; 53. Conductor layer; 54. Resistance layer; 55. Encapsulation layer; 6. Electrode; 7. Turbulence column; 8. Fixing bracket; 9. Lower end cover. Detailed Implementation

[0021] The utility model will now be further described with reference to the accompanying drawings and specific embodiments: Please see Figure 1 and Figure 2 According to an embodiment of the present invention, a circular tube membrane heating assembly for a new energy vehicle includes a flange 2, on which two sets of membrane heating mechanisms 5 are mounted. Each set of circular tube membrane heating mechanisms 5 includes a stainless steel tube 51. One set of stainless steel tubes 51 is an inlet pipe, and the other is an outlet pipe. An insulating layer 52 is wrapped around the outer layer of each stainless steel tube 51. A conductor layer 53 is mounted outside the insulating layer 52, a resistance layer 54 is mounted outside the conductor layer 53, and an encapsulation layer 55 is mounted outside the resistance layer 54. The two sets of circular tube membrane heating mechanisms 5 are connected... The device is equipped with electrode components 6, and the ends of two sets of stainless steel tubes 51 are connected to fixed brackets 8 by laser welding. A lower end cover 9 is connected to one side of the fixed bracket 8 by laser welding. This solution defines the core structure of the membrane heating component. It achieves efficient heating and insulation protection through a multi-layer membrane structure (insulation layer, conductor layer, resistance layer, encapsulation layer). The conversion of electrical energy to thermal energy is achieved through the circular tube membrane heating mechanism 5. Electrode components 6 provide power input, and the lower end cover 9 and fixed bracket 8 ensure the sealing and flow of coolant. It is suitable for coolant heating scenarios in new energy vehicles.

[0022] Please see Figure 1 and Figure 2A sealing plate 1 is installed on one side of the flange 2. The sealing plate 1 connects the flange 2 to the outer shell by bolts 4. Two sets of stainless steel joints 3 are connected to the flange 2 by laser welding. The two sets of stainless steel joints 3 are connected to two sets of stainless steel pipes 51 respectively. The bolt connection facilitates the disassembly and maintenance of the flange 2. The laser welding of the stainless steel joints 3 improves the sealing performance. The integrated design of the flange 2 and the stainless steel joints 3 simplifies the pipeline connection. The stainless steel joints 3 are made of 304L stainless steel by stamping. 304L stainless steel has strong corrosion resistance and is suitable for joints to be in contact with coolant for a long time. The stainless steel pipes 51 are made of 430 stainless steel. 430 stainless steel has low cost and excellent thermal conductivity, which is suitable for the heating requirements of the film heating mechanism.

[0023] Please see Figure 2 The conductor layer 53 is made of silver. A temperature sensor is mounted on the conductor layer 53 by reflow soldering. The electrode conductive sheet on the electrode 6 is connected to the conductor layer 53 by reflow soldering. The silver conductor layer has excellent conductivity, which reduces resistance loss. The reflow soldering process ensures the stability of the connection between the temperature sensor and the electrode. The temperature sensor collects the film temperature and controls the coolant temperature through the motherboard.

[0024] Please see Figure 2 The resistive layer 54 is composed of ruthenium resistors, which have a high temperature coefficient, strong stability and oxidation resistance, making them suitable for long-term high-temperature heating scenarios.

[0025] Please see Figure 2 The encapsulation layer 55 is made of ceramic-glass-silica composite material. With silica as the core, it achieves comprehensive performance of "high barrier, temperature resistance, corrosion resistance and insulation" through ceramic phase reinforcement and glass phase optimization.

[0026] Please see Figure 2 The stainless steel tube 51 is equipped with a turbulence column 7, which can effectively change the laminar flow state of the coolant, enhance the turbulence effect, and improve the heat exchange efficiency.

[0027] Please see Figure 2 Both the fixed bracket 8 and the lower end cover 9 are made of 304L stainless steel by stamping. The inner wall of the lower end cover 9 and the port of the stainless steel tube 51 form an annular flow channel, which connects the inner cavity of the inlet pipe and the outlet pipe to realize the diversion and flow of coolant. The 304L stainless steel stamping process reduces costs. The annular flow channel design ensures that the coolant can fully exchange heat while reducing the flow resistance of the coolant and improving the heat exchange efficiency.

[0028] The working principle of a circular tube membrane heating component for new energy vehicles is as follows: the electrode 6 transmits electrical energy to the resistance layer 54 through the conductor layer 53. The ruthenium resistance material generates heat after being energized. The heat is transferred to the coolant flowing inside the tube through the wall of the stainless steel tube 51. The insulation layer 52 isolates the resistor from the vehicle. The encapsulation layer 55 protects the resistance layer 54 from the influence of the external environment. The coolant flows in from the inlet pipe, is disturbed by the internal turbulence column 7, and then fully contacts the tube wall to absorb heat. It is redirected in the annular flow channel of the lower end cover 9 and flows out through the outlet pipe to complete the circulation. The temperature sensor monitors the temperature of the heating area in real time and ensures stable heating power through feedback adjustment. The laser-welded connection parts ensure the integrity and sealing of the structure. The precise selection of stainless steel materials meets the technical requirements of structural strength, corrosion resistance and heat conduction, and together achieves efficient and safe heating function.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circular tube membrane heating assembly for new energy vehicles, comprising a flange (2), characterized in that: Two sets of circular tube membrane heating mechanisms (5) are installed on the flange (2); Both sets of the circular tube membrane heating mechanism (5) include stainless steel tubes (51). One set of the stainless steel tubes (51) is a water inlet pipe and the other set is a water outlet pipe. The outer layer of the stainless steel tube (51) is wrapped with an insulating layer (52). A conductor layer (53) is installed on the outside of the insulating layer (52). A resistance layer (54) is installed on the outside of the conductor layer (53). An encapsulation layer (55) is installed on the outside of the resistance layer (54). An electrode (6) is installed between the two sets of circular tube film heating mechanisms (5); Both sets of stainless steel pipes (51) have fixed brackets (8) connected to their ends by laser welding, and a lower end cap (9) is connected to one side of the fixed brackets (8) by laser welding.

2. The circular tube membrane heating assembly for new energy vehicles according to claim 1, characterized in that: A sealing plate (1) is installed on one side of the flange (2). The sealing plate (1) connects the flange (2) to the outer shell by bolts (4). Two sets of stainless steel joints (3) are connected to the flange (2) by laser welding. The two sets of stainless steel joints (3) are respectively connected to two sets of stainless steel pipes (51).

3. The circular tube membrane heating assembly for new energy vehicles according to claim 2, characterized in that: The stainless steel connector (3) is made of 304L stainless steel material by stamping, and the stainless steel pipe (51) is made of 430 stainless steel material.

4. The circular tube membrane heating assembly for new energy vehicles according to claim 1, characterized in that: The conductor layer (53) is made of silver material. A temperature sensor is installed on the conductor layer (53) by reflow soldering. The electrode conductive sheet on the electrode (6) is connected to the conductor layer (53) by reflow soldering.

5. A circular tube membrane heating assembly for new energy vehicles according to claim 1, characterized in that: The resistive layer (54) is composed of ruthenium resistors.

6. A circular tube membrane heating assembly for new energy vehicles according to claim 1, characterized in that: The encapsulation layer (55) is made of a ceramic-glass-silica composite material.

7. A circular tube membrane heating assembly for new energy vehicles according to claim 1, characterized in that: The stainless steel tube (51) has a turbulence column (7) installed inside.

8. A circular tube membrane heating assembly for new energy vehicles according to claim 1, characterized in that: The fixed bracket (8) and the lower end cover (9) are both made of 304L stainless steel. The inner wall of the lower end cover (9) and the port of the stainless steel pipe (51) form an annular flow channel, which connects the inner cavity of the water inlet pipe and the water outlet pipe to realize the flow of coolant.

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