High-voltage heater of electric vehicle having heat-generating flow path structure of heater ring

Abstract

The present invention relates to a high-voltage heater of an electric vehicle, the heater having a heat-generating flow path structure of heater rings and, more specifically, to a high-voltage heater of an electric vehicle, the heater having a heat-generating flow path structure of heater rings, wherein heating elements can be easily installed and removed by the heater rings, and the heat-generating flow path structure is improved. According to an embodiment of the present invention, the high-voltage heater of an electric vehicle in which the heater has a heat-generating flow path structure of heater rings comprises: a flow path that is formed on the lower surface inside a heater body and has a zigzag flow path pipe; a plurality of heater rings that are inserted into a plurality of grooves in the flow path pipe and are supplied with external power to generate heat; and a protective layer disposed above the flow path pipe and protecting the plurality of heater rings. The zigzag flow path includes a plurality of straight flow paths and a plurality of curved flow paths.

Description

High-voltage heater for electric vehicles having a heating path structure of a heating ring

[0001] The present invention relates to a high-voltage heater for an electric vehicle having a heating path structure of a heating ring, and more specifically, to a high-voltage heater for an electric vehicle having a heating path structure of a heating ring in which installation and disassembly of a heating element are easy by means of a heating ring and the structure of the heating path is improved.

[0002] Unless otherwise indicated herein, the materials described in this section are not prior art to the claims of this application, and their inclusion in this section is not intended to be admitted as prior art.

[0003] The recent rapid growth of electric vehicles has led to a surge in demand and supply for automotive electronics. These vehicles are equipped with numerous electronics and require internal heating and air conditioning systems, making heat-generating components essential for electric heating. Recently, approaches have been adopted to maximize heat generation while minimizing installation space. However, these approaches present a structural design challenge: ensuring maximum heat generation with a minimum surface area in a minimal space.

[0004] In particular, the material of the heat-conducting pipe for heating the fluid to be heated inside is important, but there are limitations due to the cost of expensive materials, and the design structure of the pipe for maximizing the heat transfer area of ​​the pipe and the design of the electric heating element that electrically heats the pipe according to this are also emerging as very important issues.

[0005] In this regard, the fluid heating heater of Patent Publication No. 10-2021-0024967 (published on March 8, 2021) has a configuration in which electricity is applied to a heating pattern, which is a printed layer having an electric resistor formed on a separate heating plate, and the heat generated by the heating heats the fluid flowing through the flow path forming part of the main body. However, there is a problem in that a circuit board having an electric circuit for heating the heating pattern of the separate heating plate must be provided, and the overall configuration is complex, such as terminals and electrodes being connected, and the production cost is considerably high.

[0006] In addition, the band heater for manifold resin guide tube of Patent Registration No. 10-1561004 (announced on October 15, 2015) has a configuration in which a heater wire is inserted in a zigzag pattern into a fitting groove of a circular pipe-shaped heater body to heat the heater wire and heat the resin guide tube inside the circular pipe heater body in order to prevent the resin inside the manifold from solidifying, but this has the problem that it takes a lot of time and money because it is not easy to mill the curved part of the fitting groove of the heater body in a zigzag pattern, and even when the heater wire, which is a heating element, is inserted, bending may occur when turning in the opposite direction, causing distortion and deformation of the shape, which may cause abnormal conditions and problems with the durability of the heater wire material.

[0007] {Prior art literature}

[0008] [Patent Document]

[0009] (Patent Document 1) Patent Publication No. 10-2021-0024967 (Published on March 8, 2021)

[0010] (Patent Document 2) Patent Registration No. 10-1561004 (Published on October 15, 2015)

[0011] The present invention has been devised to improve upon the above-mentioned conventional problems, and the purpose of the present invention is to provide a high-voltage heater for an electric vehicle having an improved heating ring heating path structure for generating heat by forming a heating ring on the outer surface of a circular pipe through which a fluid flows instead of a surface heating element having a printed layer formed thereon, thereby having a simple configuration and being easy to manufacture, and for increasing the heat transfer area of ​​the flow path to enhance the heating effect.

[0012] In addition, it is obvious that the technical tasks are not limited to the technical tasks described above, and that other technical tasks may be derived from the following description.

[0013] A high-voltage heater for an electric vehicle having a heating path structure of a heating ring according to one embodiment of the present invention is characterized by including: a path formed on a lower surface inside a heater body and having a zigzag path pipe; a plurality of heating rings inserted into a plurality of fitting grooves of the path pipe and generating heat by supplying external power; a protective layer protecting the plurality of heating rings on an upper portion of the path pipe; and the zigzag path pipe having a plurality of straight paths and a plurality of curved paths.

[0014] According to a preferred embodiment of the present invention, the above-described pipe is characterized in that it is extruded as a metal material and the fitting groove on the outer surface thereof is formed by turning.

[0015] According to a preferred embodiment of the present invention, the plurality of heater rings are characterized in that they are connected in series or in parallel by a power supply line connecting them.

[0016] According to a preferred embodiment of the present invention, the fitting groove of the above-described pipe is characterized by having a forced fitting structure in which the inlet portion is formed relatively narrower than the inside, so that the fitted heater ring does not easily come off or flow.

[0017] According to a preferred embodiment of the present invention, the material of the above-described pipe is characterized by being any one of aluminum, copper, or an alloy metal material thereof having high thermal conductivity.

[0018] According to a preferred embodiment of the present invention, the protective layer of the above-described pipe is characterized by being an insulating material.

[0019] According to a preferred embodiment of the present invention, the inner surface of the pipe is characterized in that a groove is formed in the longitudinal direction, and the grooves are arranged in a plurality in the circumferential direction of the pipe.

[0020] According to a preferred embodiment of the present invention, the inner surface of the euro pipe is characterized in that a plurality of micro-concave or convex portions are formed.

[0021] According to the present invention, by forming a heating ring on the outer surface of a circular pipe through which a fluid flows, increasing the heat transfer area of ​​the inner surface, and forming a protective layer of insulating material, the overall structure is simple and easy to manufacture, and not only does it have an improved heat generation effect, but it also has the economic effect of improving productivity and reducing costs.

[0022] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0023] FIG. 1 is an exploded schematic diagram of a high-voltage heater having a heating path structure of a heating ring according to one embodiment of the present invention.

[0024] FIG. 2 is a perspective view of a heat pipe (a) and a heating ring (b) of a high-voltage heater having a heating path structure of a heating ring according to one embodiment of the present invention.

[0025] FIG. 3 is a side view of a flow path of a high-voltage heater having a heating flow path structure of a heating ring according to one embodiment of the present invention.

[0026] FIG. 4 is a vertical cross-sectional view of a heat-generating passage of a high-voltage heater having a heating passage structure of a heating ring according to one embodiment of the present invention.

[0027] FIG. 5 is a longitudinal cross-sectional view of a heat-generating passage of a high-voltage heater having a heating passage structure of a heating ring according to one embodiment of the present invention.

[0028]

[0029] Hereinafter, a high-voltage heater for an electric vehicle having a heating path structure of a heating ring according to a preferred embodiment will be specifically examined with reference to the attached drawings.

[0030] For reference, in the drawings below, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and drawing numbers for the same components are omitted in individual drawings.

[0031] Referring to FIGS. 1 to 4, one embodiment of the present invention will be described. A high-voltage heater (300) for an electric vehicle having a heating path structure of a heating ring is characterized by including: a path (130) formed on a lower surface (105) inside a heater body (100) and having a zigzag path pipe (200); a plurality of heating rings (220) inserted into a plurality of fitting grooves (210) of the path pipe (200) to generate heat by supplying external power; a protective layer (230) protecting the plurality of heating rings (220) on the path pipe (200); and the zigzag path pipe (200) including a plurality of straight paths (131) and a plurality of curved paths (132).

[0032] As illustrated in FIG. 1, the high-voltage heater (300) of the electric vehicle of the present invention is basically largely composed of a heater body (100), an upper cover (110), and a lower cover (120), and a flow path (130) is formed in a zigzag 'S' shape on the lower surface (105) of the heater body (100) to allow the flow path (200) to be installed.

[0033] The fluid heated and flowing inside the above-mentioned pipe (200) is introduced through the fluid inlet (140), and the fluid heated by the powered heating ring (220) can be transferred to an air conditioning device such as a heating device through the fluid outlet (150), and can also be transferred to an electric element device that requires maintenance of a certain temperature to prevent performance degradation.

[0034] In addition, when the above-mentioned euro pipe (200) is discharged in a zigzag manner, a plurality of partition walls (135) are interposed between the euro pipes (200) so that the euro pipe (200) can be easily and firmly aligned on the lower surface (105) of the main body.

[0035] In addition, as shown in the heater body (100) of Fig. 1, when the above-mentioned flow path (200) is disposed in a zigzag flow path (130), a straight flow path (131) extending in the longitudinal direction is formed, and when the direction is changed, a curved flow path (132) can be formed with a partition wall (135) in between.

[0036] Here, the circular heating ring (220) inserted into the fitting groove (210) of the flow pipe (200) of the present invention has the advantage that the shape of the circular heating ring (220) is not distorted or deformed even when the flow pipe (200) is bent and deformed by the curved flow path (132), so that not only is durability improved, but an abnormal state of a conventional heating element due to shape distortion can be resolved.

[0037] In addition, in the heater body (100), a power source for generating heat in the heating ring (220) formed inside the duct (200) is connected to the terminal (225) of the heating ring (220), and a connector (160) for connecting the power source can be configured to be connected with a high voltage.

[0038] The above-described pipe (200) illustrated in FIGS. 2 and 3 is extruded from a metal material, and the fitting groove (210) on its outer surface can be formed by turning. In FIGS. 2 and 3, the protective layer (240) of the pipe (200) is omitted.

[0039] That is, as shown in FIG. 2, the flow pipe (200) is formed by metal extrusion molding, and at this time, a sawtooth-shaped groove (250) inside the flow pipe (200) can be formed together, as shown in FIG. 4. The sawtooth-shaped groove (250) inside the flow pipe (200) is intended to improve heat transfer by increasing the heat transfer area that the heated fluid comes into contact with. In addition, as shown in FIG. 3, the flow pipe (200) that is extruded forms a concave groove on its outer surface by turning at a predetermined interval, which corresponds to a fitting groove (210) for fitting a heater ring (220) into the groove.

[0040] Although not shown in the drawing, a plurality of heater rings (220) inserted into the fitting groove (210) can be connected in series or parallel by a power supply line connecting them.

[0041] That is, the power supply line may be formed on the inner wall of the conduit (200) by introducing an external power source through the connector (160) illustrated in FIG. 1. For example, the power supply line may be connected through a hole (not illustrated) or by forming a separate space (not illustrated) on the outer side of the conduit (200), and the connection with the external power source may be connected through the connector (160) illustrated in FIG. 1.

[0042] In addition, as illustrated in FIG. 5, the fitting groove (210) of the aforementioned pipe (200) may be provided with a forced fitting structure in which the inlet portion is formed relatively narrower than the inside, so that the fitted heater ring (220) does not easily come off or move. In FIG. 5, the protective layer (240) of the pipe (200) is omitted from the display.

[0043] That is, the above-mentioned heater (220) is an electric element which is an electric resistance body and functions as a heating element by an applied power source. By forming the entrance of the fitting groove (210) narrower to prevent it from flowing or coming off in the fitting groove (210) of the above-mentioned pipe (200), it can be firmly installed by applying pressure during the process of forcibly fitting it, and the internal fluid of the pipe (200) can be normally heated.

[0044] As described above, the above-mentioned pipe (200) is intended to effectively heat the internal fluid, and for this purpose, the material of the pipe (200) may be made of aluminum, copper, or an alloy metal having high thermal conductivity.

[0045] In addition, as illustrated in Fig. 4, a separate protective layer (240) may be formed on the outer surface of the above-described pipe (200) to protect and prevent the heater ring (220) fitted into the fitting groove (210) from coming off. In addition, the material of the protective layer (240) may be formed as an insulating material to keep the heated pipe (200) warm.

[0046] As shown in Fig. 4, the inner surface of the above-mentioned pipe (200) may be formed with a sawtooth-shaped groove (250) in the longitudinal direction, and the grooves (250) may be densely arranged in a large number in the circumferential direction of the above-mentioned pipe (200).

[0047] That is, the reason for forming a sawtooth-shaped groove (250) in the longitudinal direction on the inner surface of the euro pipe (200) as described above is to increase the heat transfer area of ​​the fluid in contact, and accordingly, the heat generation effect transmitted by heating can be increased.

[0048] In addition, in order to increase the contact area of ​​the fluid in the heated pipe (200) as described above, a plurality of micro-concave or micro-convex portions in the shape of grooves may be formed on the inner surface of the pipe (200) in addition to a sawtooth shape.

[0049] Although the preferred embodiments of the present invention have been described with reference to the attached drawings, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application. Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims described below rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

[0050] [Explanation of symbols]

[0051] 100: heater body, 105: lower surface of body, 110: upper cover, 120: lower cover, 130: flow path, 131: straight flow path, 132: curved flow path, 135: bulkhead, 140: fluid inlet, 150: fluid outlet, 160: connector, 200: flow path, 210: heater ring fitting groove, 220: heater ring, 225: power terminal, 240: protective layer, 250: sawtooth groove, 300: heater

Claims

1. A flow path formed on the lower surface inside the heater body and having a zigzag flow path; A plurality of heater rings inserted into a plurality of grooves of the above-mentioned Euro pipe and generating heat by supplying external power; A protective layer protecting the plurality of heater rings on the upper portion of the above-mentioned euro pipe; A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the zigzag-shaped flow path includes a plurality of straight flow paths and a plurality of curved flow paths.

2. In paragraph 1, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the above-mentioned euro pipe is extruded as a metal material and a fitting groove on its outer surface is formed by turning.

3. In paragraph 1, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the plurality of heating rings are connected in series or in parallel by a power supply line connecting them.

4. In paragraph 1, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the fitting groove of the above-mentioned euro pipe is formed with a forced-fit structure so that the inlet portion is formed relatively narrower than the inside so that the fitted heater ring does not easily come off or flow.

5. In paragraph 1, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the material of the above-mentioned euro pipe is made of any one of aluminum, copper, or an alloy metal material thereof having high thermal conductivity.

6. In paragraph 1, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the protective layer of the above-mentioned euro pipe is an insulating material.

7. In paragraph 2, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the inner surface of the above-mentioned pipe has a groove formed in the longitudinal direction and the grooves are arranged in a plurality in the circumferential direction of the above-mentioned pipe.

8. In paragraph 2, A high-voltage heater for an electric vehicle having a heating path structure of a heating ring, characterized in that the inner surface of the above-mentioned euro pipe is formed with a number of micro-concave or convex portions.

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