Fluid heating device for heating the battery of an electric vehicle

Abstract

Fluid heating device for a battery heater of an electric vehicle, wherein the fluid heating device comprises: a housing (100) configured to allow a fluid (F) to flow in and out, forming a first chamber (100a) in which the fluid (F) is heated; and a heater (200) configured to form a path through which the fluid (F) flows into the first room (100a) and heats the fluid (F), the heating system (200) includes: a support section (210) which is arranged inside the housing (100) and configured to form a second space (100b) separate from the first space (100a), a heating section (220) which is connected to the support section (210) by means of an adhesive and has at least one section extending into the first space (100a), forming a path through which the fluid (F) flows into the first space (100a), and is configured to heat the fluid (F), and a head section (230) which is connected to the heating section (220) by means of the adhesive and is configured to form a path through which the fluid (F) is supplied to the heating section (220).

Description

Background area

[0001] The present disclosure relates to a fluid heating device for an electric vehicle and in particular to a fluid heating device for heating a battery of an electric vehicle in order to ensure the performance of a battery of the electric vehicle. Relevant state of the art

[0002] Generally, an electric vehicle is powered by a battery installed inside the vehicle. When the outside temperature drops, the battery's performance can deteriorate. To ensure the battery's performance remains efficient, a battery heating system is required. This system heats the fluid, thereby increasing the battery's temperature.

[0003] The heating system is equipped with a heating device that heats the fluid. The prior art relating to the heating device is disclosed in Korean patent KR 10 2 366 917 B1 (Battery heating device for electric vehicle, July 10, 2018). The aforementioned granted invention comprises a housing through which fluid flows in and out, and a heater arranged inside the housing that heats the fluid.

[0004] When a heating device is operated for an extended period, internal components can be damaged due to contact with the fluid and heat. One particular problem with this heating device was that a leak developed at the point where the individual components, such as the housing and the heating element, connect, as a result of deterioration.

[0005] Further heating devices in various designs for use in heating a battery are disclosed, for example, in DE 10 2024 124 422 A1, DE 10 2024 107 452 A, JP 2018 - 84 380 A, US 2009 / 0 020 518 A1, KR 10 2 591 211 B1, EP 2 607 120 A1 and JP 2021 - 75 178 A1. SUMMARY

[0006] The purpose of the present disclosure is to provide a fluid heating device for the battery heating of an electric vehicle, which ensures the longevity of the heating device and prevents malfunction of the device due to submersion.

[0007] According to one aspect of the present disclosure, a fluid heating device is provided for the battery heating of an electric vehicle, wherein the fluid heating device comprises: a housing configured to allow a fluid to flow in and out, and forming a first space in which the fluid is heated;and a heater configured to form a path through which the fluid flows into the first chamber and heats the fluid, the heater comprising a support section arranged within the housing and configured to form a second chamber separate from the first chamber, a heating section connected to the support section by means of an adhesive, and having at least one section extending into the first chamber, forming a path through which the fluid flows into the first chamber and configured to heat the fluid, and comprising a head section connected to the heating section by means of the adhesive and configured to form a path through which the fluid is supplied to the heating section.

[0008] The housing can comprise a first housing having an open surface and a first area extending from an inner wall and configured to accommodate the support section, and a second housing configured to close the open surface of the first housing and having a pressurization section extending towards the support section to press the support section against the first area.

[0009] The first housing may comprise a second area extending outwards from a side wall and arranged such that at least one section of the second housing is in surface contact, and a third area designed to surround an edge of the second housing at one end of the second area, wherein a connecting element may be provided in the third area which penetrates the third area to be inserted into the edge of the second housing and to connect the first housing and the second housing.

[0010] The second housing may have a connecting section formed on a surface adjacent to the second area, which is inserted into a hole formed in the second area to connect the second housing to the first housing.

[0011] The heating section can comprise a first tube designed to allow fluid to enter its interior, a second tube designed to surround an outer surface of the first tube, and a heating module positioned between the first tube and the second tube to generate heat, wherein the first tube and the second tube rupture at least partially when the heating module exceeds a preset temperature and generates heat, thereby preventing overheating of the heating module.

[0012] The fluid can flow into the first chamber along an inner surface of the first pipe and flow out of the first chamber along an outer surface of the second pipe.

[0013] The fluid heating device may also include a filter section configured to prevent foreign substances from flowing out of the interior of the housing along with the fluid.

[0014] The filter section can include a filter element configured to filter out foreign substances from the fluid and a filter support element designed to surround at least part of the inner wall of the housing and configured to support the filter element in the first space.

[0015] The housing may have a projection extending inwards from the inner wall at a point adjacent to the support section, and wherein at least part of the filter support element is held by being positioned between the support section and the projection.

[0016] The adhesive may contain a glass frit.

[0017] The fluid heating device for the battery heating of an electric vehicle according to the present disclosure exhibits the following effects.

[0018] Firstly, the present disclosure has the effect of preventing a malfunction of the heating device due to leaks.

[0019] Secondly, the present disclosure has the effect of ensuring the durability of the heating device and extending its service life.

[0020] The technical effects described above in this disclosure are not limited to the effects mentioned above, and other, unmentioned technical effects can be clearly understood by those skilled in the art from the description below. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a perspective view showing a fluid heating device for the battery heating of an electric vehicle according to the present embodiment. Fig. Figure 2 is a cross-sectional view of the fluid heating device for the battery heating of an electric vehicle along line II' of Fig. 1. Fig. Figure 3 is an enlarged view of part “A” of Fig. 2. Fig. Figure 4 is a cross-sectional view of the fluid heating device for the battery heating of an electric vehicle along line II-II' of Fig. 1. Fig. Figure 5 is a perspective exploded view of a heater. Fig. Figure 6 is a perspective exploded view of a pipe. Fig. Figure 7 is a flowchart showing the operating sequence of the fluid heating device for the battery heating of an electric vehicle according to the present embodiment. DESCRIPTION OF THE EXAMPLES

[0021] One embodiment of the present disclosure is described in detail below with reference to the accompanying drawings. However, the present embodiment is not limited to the embodiments disclosed below, but can be implemented in various forms, and the present embodiment is provided only to fully disclose the present disclosure and to fully inform a person with normal knowledge of the scope of the disclosure. The shapes of the elements in the drawings may be exaggerated for clarity, and elements identified by the same reference numerals in the drawings refer to the same elements.

[0022] Fig. Figure 1 is a perspective view showing a fluid heating device for the battery heating of an electric vehicle according to the present embodiment.

[0023] As in Fig. Figure 1 shows a fluid heating device (hereinafter referred to as the "heating device") of an electric vehicle according to the present embodiment configured such that a fluid F can flow in and out. The fluid F comprises a coolant used in the vehicle, but the type of fluid F is not limited.

[0024] The heating device forms a chamber into which fluid F flows and is held for a predetermined period. The heating device then heats the introduced fluid F. The heated fluid F flows out of the heating device towards the battery of the electric vehicle. Thus, the fluid F can heat the battery of the electric vehicle.

[0025] The heating device is equipped with a cable clamping terminal P to which a power cable is connected for supply. Furthermore, the heating device is equipped with a grounding screw 10 to prevent leakage current that may occur during operation, and a grounding wire is connected to the grounding screw 10 to allow leakage current to flow to the outside.

[0026] Furthermore, the heating device is equipped with a temperature sensor 30 for measuring the temperature of the fluid F. The temperature sensor 30 can supply the measured temperature of the fluid F to a control system that controls the heating device.

[0027] Meanwhile, the configuration of the heating device according to the present embodiment will be described below with reference to the attached drawings.

[0028] Fig. 2 is a cross-sectional view showing a fluid heating device for the battery heating of an electric vehicle along II' of Fig. 1 shows, and Fig. Figure 3 is an enlarged view of part “A” of Fig. 2. Furthermore, Fig. 4 a cross-sectional view showing the fluid heating device for the battery heating of an electric vehicle along section line II-II' of Fig. 1 shows.

[0029] As in the Fig. 2, Fig. 3 to Fig. As shown in Figure 4, the heating device according to the present embodiment can comprise a housing 100, a heater 200 and a filter section 300.

[0030] Initially, the housing 100 forms a space in which the fluid F and some components of the heating device are located. The housing 100 can be subdivided into a first space 100a, a second space 100b, and a third space 100c. The first space 100a is a space into which the fluid F flows in and out. The second space is separated from the first space 100a by a support section 210, which will be described later, and is a space in which part of a cable that supplies power to the heater 200 is located. The third space 100c is connected to the second space 100b and is a space in which another part of the cable is located. Part of the grounding screw 10 described above is located in the third space 100c to allow the leakage current to flow to the outside. The housing 100 can be made of a thermoplastic material and manufactured by a casting process.

[0031] For example, the enclosure 100 can include a first enclosure 110 and a second enclosure 120.

[0032] The first housing 110 can be provided in a form where one surface is open. The first housing 110 can, as described above, form the first chamber 100a, the second chamber 100b, and the third chamber 100c.

[0033] The first housing 110 can, for example, include an outlet 111, a first area, a second area 113, a third area 114, a fourth area 115, a sensor mounting section 117 and a projection.

[0034] The outlet 111 is formed on the inner wall of the first housing 110 and directs the fluid F flowing into a first room 100a to the outside.

[0035] The first area is formed by extending from the inner wall of the first housing 110. The support section 210 is arranged within this first area. The support section 210 separates the first chamber 100a and the second chamber 100b. A sealing element S is provided between the first area and the support section 210, thus blocking the fluid connection between the first chamber 100a and the second chamber 100b.

[0036] The second area 113 is formed by extending the inner wall of the first housing 110 outwards. At least part of the second housing 120 can be located close to the second area 113.

[0037] The third area 114 is designed to extend from the end of the second area 113 and surround the edge of the second housing 120, which is located in the second area 113. A hole is formed in the third area 114 through which a connecting element 101 is inserted. The connecting element 101 can be inserted into the edge of the second housing 120 by penetrating the third area 114.

[0038] The fourth area 115 is designed such that the second room 100b and the third room 100c are interconnected. Accordingly, a cable connected to the heater 200 can be arranged to extend from the third room 100c to the second room 100b. Furthermore, the cable can supply power to the heater 200 via a power supply cable connected to the cable fixing hole P.

[0039] The sensor mounting section 117 is formed on the outer surface of the first housing 110, so that the temperature sensor 30 is held by the first housing 110. The sensor mounting section 117 can be configured to project outwards from the first housing 110. The sensor mounting section 117 forms a space into which the temperature sensor 30 is inserted. Furthermore, a hole is formed in the sensor mounting section 117, which communicates with the first space 100a, and a portion of the temperature sensor 30 is inserted into this hole and positioned within the first space 100a. Therefore, the temperature sensor 30 can come into contact with the fluid F contained in the first space 100a and measure the temperature of the fluid F.

[0040] Furthermore, a detachment prevention element 31 can be installed in the sensor mounting section 117. This element prevents the temperature sensor 30 from detaching by forming a projection on its outer surface. The detachment prevention element 31 is connected to this projection while simultaneously enclosing another part of the temperature sensor 30 inserted into the sensor mounting section 117. Therefore, the detachment prevention element 31 can hold the temperature sensor 30 in place within the sensor mounting section 117 to prevent detachment.

[0041] The sensor mounting section 117 is preferably designed in a position separate from the heater 200, so that interference from the heat of the heater 200 is minimized when the temperature sensor 30 measures the temperature of the fluid F.

[0042] The projection is designed to extend inwards along the inner wall of the first housing 110. The projection is described below as a configuration for holding a filter section 300.

[0043] The second housing 120 is connected to the first housing 110 and closes the open surface of the first housing 110. The second housing 120 can, for example, have an inlet 121, a connecting section 122, a pressurizing section 123 and an inlet 124.

[0044] Fluid F can flow into the interior of housing 100 through inlet 121.

[0045] The connecting section 122 is provided on the surface of the second housing 120 next to the second area 113. The connecting section 122 is inserted into a hole formed in the second area 113. Furthermore, the connecting section 122 is provided in a shape in which the end is bent to support the second housing 120 through the first housing 110.

[0046] The connecting element 101 and the connecting section 122 can prevent the second housing 120 from detaching. For example, if the surface of the second housing 120 is circular next to the first housing 110, the connecting element 101 and the connecting section 122 can prevent the second housing 120, which is connected to the first housing 120, from being rotated.

[0047] The pressurization section 123 is designed to extend from the second housing 120 towards the support section 210 located in the first area. The pressurization section 123 can pressurize the support section 210 towards the side of the first area by connecting the second housing 120 to the first housing 110. The pressurization section 123 can hold the support section 210 through the first area, and the support section 210 can reinforce the blockage of the fluid connection between the first chamber 100a and the second chamber 100b.

[0048] The inlet 124 is arranged so that it is in close contact with the inner wall of the first housing 110 when the second housing 120 is connected to the first housing 110. Furthermore, a sealing element S is provided between the inlet 124 and the inner wall of the first housing 110, so that the fluid connection between the outside air and the second chamber 100b can be blocked.

[0049] The heater 200 is located inside the housing 100. The heater 200 extends from the second chamber 100b to the first chamber 100a. The heater 200 generates heat based on electricity supplied via a cable to heat the fluid F.

[0050] For example, the heater 200 can comprise the support section 210, a heating section 220, and a head section 230. The heater 200 can be bonded to the support section 210, the heating section 220, and the head section 230 by means of an adhesive. The adhesive can be applied between the support section 210 and the heating section 220, as well as between the heating section 220 and the head section 230 (see “G” in Fig. ).

[0051] The adhesive can be produced in the form of a glass frit containing SiO2 and Al2O3. The adhesive can be applied to the aforementioned connection section G and bonded to the support section 210 and the heating section 220, as well as to the heating section 220 and the head section 230, by means of a high-temperature firing process. The adhesive can improve the heat resistance and durability of the heater 200, thereby minimizing any leakage that may occur at the connection section G. Therefore, according to the present embodiment, the heater 200 can prevent leakage of the fluid F, even during prolonged operation, by ensuring heat resistance and durability, thus guaranteeing the stability of the heating device.

[0052] The following describes the configuration of the heater 200 according to the present embodiment with reference to the Fig. 5 and Fig. 6 described.

[0053] Fig. 5 is a perspective exploded view of the heater, and Fig. Figure 6 is a perspective exploded view of the pipe.

[0054] As in the Fig. 5 and Fig. As shown in Figure 6, the heater 200 according to the present embodiment can comprise the support section 210, the heating section 220 and the head section 230.

[0055] As described above, the support section 210 is arranged in the first area to separate the first room 100a and the second room 100b. Furthermore, the support section 210 holds the heating section 220.

[0056] Heating section 220 extends from the second room 100b to the first room 100a. Heating section 220 forms a path through which fluid F flows into the first room 100a. Furthermore, heating section 220 heats the fluid F by generating heat based on the current supplied by the line.

[0057] The heating section 220 can, for example, include a first pipe 221, a second pipe 223 and a heating module 225.

[0058] The first tube 221 is designed to allow fluid to flow into its interior. The second tube 223 is arranged to surround the outer surface of the first tube 221. The heating module 225 is positioned between the first tube 221 and the second tube 223. A section between the first tube 221 and the second tube 223 is designed to block the fluid flow to the outside, thus preventing leakage at the heating module 225.

[0059] The heating section 220 heats the fluid F near the inside of the first tube 221 and the outside of the second tube 223 by generating heat through the heating module 225. The heating section 220 can be arranged on a central axis that penetrates the first chamber 100a and the second chamber 100b to efficiently heat the fluid F. However, the position of the heating section 220 is not restricted.

[0060] Furthermore, the heating section 220 is designed to prevent overheating of the heating module 225. The first tube 221 and the second tube 223, for example, can be made of a ceramic material. Moreover, the first tube 221 and the second tube 223 may have a thickness that could be damaged when heated to a predetermined temperature. Therefore, if the heating module 225 overheats, at least part of the first tube 221 and the second tube 223 could be damaged. For this reason, fluid F enters between the first tube 221 and the second tube 223, interrupting the power supply to the heating module 225 and thus stopping the heat generation of the heating module 225, thereby preventing overheating.

[0061] The head section 230 is connected to the heating section 220 to form a path through which the fluid F moves to the heating section 220. The head section 230 can be tubular. The head section 230 is located in the second chamber 100b and is in close contact with the second housing 120. Furthermore, the sealing element S is provided between the second housing 120 and the head section 230 to prevent the fluid F from leaking into the second chamber 100b during the insertion process.

[0062] As in the Fig. 2, Fig. 3 to Fig. As shown again in Figure 4, the filter section 300 is arranged inside the first housing 110 according to the present embodiment. The filter section 300 prevents foreign substances from escaping through the outlet 111. The filter section 300 can filter foreign substances that may arise from the housing 100 and / or the heater 200 during long-term operation of the heating device. Furthermore, the filter section 300 can filter contaminants from the first tube 221 and / or the second tube 223 if the first and second tubes are damaged, in order to prevent overheating of the heater 200.

[0063] The filter section 300 can, for example, include a filter element 310 and a filter carrier element 320.

[0064] The filter element 310 is designed to filter out foreign matter of a specific size. The filter element 310 can be positioned adjacent to the outlet 111. Furthermore, the filter element 310 can be provided with a slot-shaped opening of a specific width.

[0065] The filter support element 320 holds the filter element 310 inside the first housing 110. The filter support element 320 can be designed to surround the inner wall of the first housing 110. At least part of the filter support element 320 can be arranged to be supported by the projection. The projection can be configured to partially abut the support section 210. That is, the filter support element 320 can be held by the projection in a state where it is in contact with the support section 210. Furthermore, a support projection 321 is formed in the filter support element 320, which spans the projection. Accordingly, the filter support element 320 can be held by the support projection 321, which spans the projection, and prevented from being separated, for example, rotated, within the first housing 110.

[0066] The operation of the heating device is described below with reference to Fig. 7 described. The following description of the heating device's operation is based on Fig. 4 understandable.

[0067] Fig. Figure 7 is a flowchart showing the operating sequence of the fluid heating device for the battery heating of an electric vehicle according to the present embodiment.

[0068] As in Fig. As shown in Figure 7, the heating device according to the present embodiment can heat the fluid F and carry out the battery heating through a fluid inlet step S100, a fluid heating step S200 and a fluid outlet step S300.

[0069] Initially, in the inlet step S100, the heating device can be activated if the outside temperature of the electric vehicle is lower than the preset temperature. The fluid F can flow through the inlet 121 into the housing 100 when the fluid is circulating in the heating system.

[0070] In fluid heating step S200, the fluid F passes through the head section 230 and enters the interior of the heating section 220. In this case, the fluid F is heated as it comes into contact with the first tube 221. The fluid F then flows into the first chamber 100a and moves towards the bottom surface of the first housing 110. The temperature sensor 30 measures the temperature of the fluid F flowing into the first chamber 100a. The temperature sensor 30 then outputs the measured temperature of the fluid F to the outside.

[0071] If the heater 200 overheats due to a malfunction of the heating module 225, part of the heating section 220 can be damaged, thus preventing the heating module 225 from overheating.

[0072] Furthermore, the heated fluid F can flow out through outlet 111 in fluid outlet step S300 and be supplied to the vehicle battery. In this case, filter section 300 prevents foreign substances from flowing out along with the fluid F, thus avoiding damage or malfunctions in the heating system caused by foreign substances. Meanwhile, the fluid F supplied to the vehicle battery can heat the battery and thus ensure its performance.

[0073] In this way, the heating device for the electric vehicle according to the present disclosure can heat the fluid for heating the battery. Furthermore, the present disclosure can ensure the heat resistance and durability of the heater to prevent leaks, and ensure the stability of the heating system by preventing foreign substances from escaping from the heating system.

[0074] Accordingly, the present disclosure prevents a malfunction of the heating device due to leaks.

[0075] Furthermore, the present disclosure includes the effect of ensuring durability in order to extend the service life of the heating device.

[0076] The embodiments of the present disclosure described above and illustrated in the drawings are not to be understood as limiting the technical idea of ​​the present disclosure. The scope of protection of the present disclosure is limited only by the circumstances described in the claims, and a person with normal knowledge in the technical field of the present disclosure can improve and modify the technical idea of ​​the present disclosure in various ways. Accordingly, such improvements and modifications fall within the scope of protection of the present disclosure as long as they are obvious to a person with ordinary expertise.

Claims

[1] Fluid heating device for a battery heater of an electric vehicle, wherein the fluid heating device comprises: a housing (100) configured to allow a fluid (F) to flow in and out, forming a first chamber (100a) in which the fluid (F) is heated; and a heater (200) configured to form a path through which the fluid (F) flows into the first room (100a) and heats the fluid (F), the heating system (200) includes: a support section (210) which is arranged inside the housing (100) and configured to form a second space (100b) separate from the first space (100a), a heating section (220) which is connected to the support section (210) by means of an adhesive and has at least one section extending into the first space (100a), forming a path through which the fluid (F) flows into the first space (100a), and is configured to heat the fluid (F), and a head section (230) which is connected to the heating section (220) by means of the adhesive and is configured to form a path through which the fluid (F) is supplied to the heating section (220). [2] Fluid heating device according to claim 1, wherein the housing (100) comprises: a first housing (110) with an open surface and a first area extending from an inner wall and configured to accommodate the support section (210), and a second housing (120) configured to close the open surface of the first housing (110) and containing a pressurizing section (123) extending towards the carrier section (210) to press the carrier section (210) towards the first area. [3] Fluid heating device according to claim 2, wherein the first housing (110) comprises: a second area (113) extending outwards from a side wall and arranged such that at least one section of the second housing (120) is in surface contact, and a third area (114) that surrounds an edge of the second housing (120) at one end of the second area (113), and a connecting element (101) which is provided in the third area (114) and penetrates the third area (114) to be inserted into the edge of the second housing (120) and to connect the first housing (110) and the second housing (120). [4] Fluid heating device according to claim 3, wherein the second housing (120) has a connecting section (122) formed on a surface adjacent to the second region (113) and inserted into a hole formed in the second region (113) to connect the second housing (120) to the first housing (110). [5] Fluid heating device according to claim 2, wherein the heating section (220) comprises: a first tube (221) that allows the fluid (F) to enter its interior, a second tube (223) that surrounds an outer surface of the first tube (221), and a heating module (225) provided between the first pipe (221) and the second pipe (223) to generate heat, wherein the first pipe (221) and the second pipe (223) are at least partially opened when the heating module (225) exceeds a predetermined temperature and generates heat, thereby preventing overheating of the heating module (225). [6] Fluid heating device according to claim 5, wherein the fluid (F) flows into the first space (100a) along an inner surface of the first tube (221) and flows out of the first space (100a) along an outer surface of the second tube (223). [7] Fluid heating device according to claim 1, further comprising a filter section (300) which is provided between the support section (210) and a projection provided on the inner wall of the housing (100) and is configured to prevent foreign substances from flowing out of the interior of the housing (100) together with the fluid (F). [8] Fluid heating device according to claim 7, wherein the filter section (300) comprises: a filter element (310) configured to filter the foreign substances from the fluid (F), and a filter support element (320) which is provided to surround at least part of the inner wall of the housing (100) and which is configured to hold the filter element (300) in the first space (100a). [9] Fluid heating device according to claim 8, wherein the filter carrier element (320) has a support projection (321) which is provided to surround at least part of the projection and which is configured to prevent the filter carrier element (320) from coming loose. [10] Fluid heating device according to claim 1, wherein the adhesive comprises a glass frit.

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