Fluid heating device for battery heating of electric vehicle

Abstract

In order to provide a fluid heating device for heating a battery of an electric vehicle to ensure durability of the heating device and prevent failure of the device due to water immersion, the fluid heating device for heating a battery of an electric vehicle according to the present disclosure comprises: a housing; a heater configured to enable a fluid to flow in and out and to form a first space in which the fluid is heated; and a heater configured to form a path through which a fluid flows into the first space and to heat the fluid, in which the heater includes: a support portion disposed inside the housing and configured to form a second space separated from the first space; a heating part connected to the supporting part by an adhesive, the heating part having at least a portion extending into the first space, forming a path through which the fluid flows into the first space, and configured to heat the fluid; and a head portion connected to the heating portion by an adhesive and configured to form a path through which a fluid is supplied to the heating portion. Accordingly, according to the present disclosure, it is possible to prevent the heating device from malfunctioning due to leakage.

Description

[0001] Cross - reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10 - 2023 - 0120272, filed on September 11, 2024, which is incorporated herein by reference in its entirety. Technical field

[0003] The present disclosure relates to a fluid heating device for an electric vehicle, and more particularly, to a fluid heating device for heating a battery of an electric vehicle to ensure battery performance of the electric vehicle. Background art

[0004] Generally, an electric vehicle operates based on a battery installed in the vehicle. When the external temperature drops, the performance of the battery may deteriorate. To ensure the performance of the battery, a battery heating system is required. The heating system heats a fluid and uses the heated fluid to increase the temperature of the battery.

[0005] The heating system is equipped with a heating device for heating the fluid. Related art regarding the heating device is disclosed in "Korean Patent No. 10 - 2366917 (Battery heating device for electric vehicle, July 10, 2018)". The above - registered invention includes a housing for the fluid to flow in and out, and a heater disposed inside the housing and heating the fluid.

[0006] When the heating device operates for a long time, internal components may deteriorate due to fluid contact and heat. In particular, the heating device has a problem of leakage occurring due to deterioration at the connection parts of each component (such as the housing and the heater). Summary of the utility model

[0007] An object of the present disclosure is to provide a fluid heating device for heating a battery of an electric vehicle that ensures the durability of the heating device and prevents the device from malfunctioning due to water immersion.

[0008] According to one aspect of the present disclosure, there is provided a fluid heating device for heating a battery of an electric vehicle. The fluid heating device includes: a housing configured to allow a fluid to flow in and out and form a first space therein for heating the fluid; and a heater configured to form a path through which the fluid flows into the first space and heat the fluid. The heater includes: a support portion disposed inside the housing and configured to form a second space separated from the first space; a heating portion connected to the support portion by an adhesive, at least a part of the heating portion extending into the first space, the heating portion forming a path through which the fluid flows into the first space and being configured to heat the fluid; and a head connected to the heating portion by an adhesive and configured to form a path through which the fluid is supplied to the heating portion.

[0009] The housing may include: a first housing including an open surface and a first region extending from an inner wall and configured to dispose the support portion; and a second housing configured to close the open surface of the first housing and including a pressing portion extending toward the support portion to press the support portion toward the first region.

[0010] The first housing may include: a second region extending outward from a side wall and arranged such that at least a part of the second housing makes surface contact therewith; and a third region provided at an end of the second region to surround an edge of the second housing, and a connecting member may be provided in the third region to penetrate the third region and insert into the edge of the second housing to connect the first housing and the second housing.

[0011] The second housing may include a connecting portion formed on a surface adjacent to the second region and inserted into a hole formed in the second region to connect the second housing to the first housing.

[0012] The heating portion may include: a first pipe configured to allow the fluid to enter therein; a second pipe configured to surround an outer surface of the first pipe; and a heating module disposed between the first pipe and the second pipe to generate heat. When the heating module exceeds a preset temperature and generates heat, at least a part of the first pipe and the second pipe may rupture to prevent overheating of the heating module.

[0013] The fluid may flow into the first space along an inner surface of the first pipe and flow out of the first space along an outer surface of the second pipe.

[0014] The fluid heating device may further include a filter portion configured to prevent foreign matter from flowing out of the housing interior together with the fluid.

[0015] The filter unit may include: a filter member configured to filter foreign matter from a fluid; and a filter support member disposed to surround at least a part of the inner wall of the housing and configured to support the filter member within a first space.

[0016] The housing may include a protrusion protruding inward from the inner wall at a position adjacent to the support portion, and at least a part of the filter support portion may be supported by being disposed between the support portion and the protrusion.

[0017] The adhesive may contain glass frit.

[0018] The fluid heating device for battery heating of an electric vehicle according to the present disclosure has the following effects.

[0019] First, the present disclosure has the effect of preventing the heating device from malfunctioning due to leakage.

[0020] Second, the present disclosure has the effect of ensuring the durability of the heating device and extending the life of the heating device.

[0021] The technical effects of the present disclosure described above are not limited to the effects mentioned above, and those skilled in the art can clearly understand other technical effects not mentioned from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 is along Figure 1 a cross-sectional view of a fluid heating device for battery heating of an electric vehicle taken along I-I'.

[0024] Figure 3 is Figure 2 an enlarged view of part "A".

[0025] Figure 4 is along Figure 1 a cross-sectional view of a fluid heating device for battery heating of an electric vehicle taken along II-II'.

[0026] Figure 5 is an exploded perspective view of the heater.

[0027] Figure 6 is an exploded perspective view of the pipe.

[0028] Figure 7 is a flowchart of the operation sequence of a fluid heating device for battery heating of an electric vehicle according to the present embodiment. Detailed Implementation Modes

[0029] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the present embodiments are not limited to the embodiments disclosed below, but can be implemented in various forms, and the present embodiments are provided only for completely disclosing the present disclosure and fully informing those with common general knowledge of the scope of the present disclosure. For clearer explanation, the shapes of the elements in the drawings may be exaggerated, and the elements denoted by the same reference numerals in the drawings represent the same elements.

[0030] Figure 1 is a perspective view showing a fluid heating device for heating a battery of an electric vehicle according to the present embodiment.

[0031] As Figure 1 shown, a fluid heating device (1000, hereinafter referred to as "heating device") of an electric vehicle according to the present embodiment is configured such that a fluid F can flow in and out. Here, the fluid F includes a coolant used in the vehicle, but the type of the fluid F is not limited.

[0032] The heating device 1000 forms a space for the fluid F to flow in and accommodate the fluid F for a specified period of time. Then, the heating device 1000 heats the introduced fluid F. The heated fluid F flows out from the heating device 1000 toward the battery of the electric vehicle. Therefore, the fluid F can heat the battery of the electric vehicle.

[0033] The heating device 1000 is provided with a cable fastening port P connected to a power supply line for supplying power. In addition, the heating device 1000 is provided with a grounding bolt 10 to prevent leakage current that may be generated during operation, and a grounding wire is connected to the grounding bolt 10 so that the leakage current can flow to the outside.

[0034] In addition, the heating device 1000 is provided with a temperature sensor 30 for measuring the temperature of the fluid F. The temperature sensor 30 can provide the measured temperature of the fluid F to a control system that controls the heating device 1000.

[0035] On the other hand, the structure of the heating device 1000 according to the present embodiment will be described below with reference to the accompanying drawings.

[0036] Figure 2 is a cross-sectional view showing a fluid heating device for heating a battery of an electric vehicle taken along Figure 1 I-I' of Figure 3 is Figure 2 an enlarged view of part "A" of Figure 4 In addition, Figure 1 is a cross-sectional view showing a fluid heating device for heating a battery of an electric vehicle taken along II-II' of

[0037] As shown Figures 2 to 4 in FIG. Figures 2 to 4 , the heating device 1000 according to the present embodiment may include a housing 100, a heater 200, and a filter unit.

[0038] First, the housing 100 forms a space for accommodating the fluid F and some components of the heating device 1000 therein. The housing 100 may be divided into a first space 100a, a second space 100b, and a third space 100c. The first space 100a is a space where the fluid F flows in and out. The second space is separated from the first space 100a by a support part 210 to be described later, and the second space is a space where a part of the line for supplying power to the heater 200 is disposed. The third space 100c communicates with the second space 10b, and the third space 100c is a space where the other part of the line is disposed. A part of the above-mentioned grounding bolt 10 is disposed in the third space 100c so that leakage current can flow to the outside. The housing 100 may be made of a thermoplastic material and may be manufactured by a casting process.

[0039] For example, the housing 100 may include a first housing 110 and a second housing 120.

[0040] The first housing 110 may be provided in a form with one surface open. The first housing 110 may form the above-mentioned first space 100a, second space 100b, and third space 100c.

[0041] For example, the first housing 110 may include an outlet 111, a first region 112, a second region 113, a third region 114, a fourth region 115, a sensor fastening part 116, and a protrusion 117.

[0042] The outlet 111 is formed on the inner wall of the first housing 110. The outlet 111 heats the fluid F flowing into the first space 100a and discharges the fluid to the outside. Here, the outlet 111 may be formed at a position that maximizes the residence time of the fluid F in the first space 100a.

[0043] The first region 112 extends from the inner wall of the first housing 110. The support part 210 is disposed within the first region 112. Here, the support part 210 may separate the first space 100a from the second space 100b. A sealing member S is disposed between the first region 112 and the support part 210, so as to be able to block the fluid communication between the first space 100a and the second space 100b.

[0044] The second region 113 is formed by extending the inner wall of the first housing 110 in the outward direction. At least a part of the second housing 120 may be tightly attached to the second region 113.

[0045] The third region 114 is provided to extend from the end of the second region 113 and surround the edge of the second housing 120 disposed in the second region 113. A hole through which the connection member 101 passes is formed in the third region 114. At this time, the connection member 101 can pass through the third region 114 and be inserted into the edge of the second housing 120.

[0046] The fourth region 115 is provided such that the second space 100b and the third space 100c communicate with each other. Accordingly, the wire connected to the heater 200 can be arranged to extend from the third space 100c to the second space 100b. In addition, the wire can supply power to the heater 200 from the power cord connected to the cable fastening hole P.

[0047] The sensor fastening part 116 is formed on the outer surface of the first housing 110 such that the temperature sensor 30 is supported by the first housing 110. The sensor fastening part 116 can be formed to protrude in the outer direction of the first housing 110. The sensor fastening part 116 forms a space into which the temperature sensor 30 is inserted. In addition, in the sensor fastening part 116, a hole communicating with the first space 100a is formed, and a part of the temperature sensor 30 is inserted into the formed hole and disposed in the first space 100a. Accordingly, the temperature sensor 30 can contact the fluid F accommodated in the first space 100a and measure the temperature of the fluid F.

[0048] In addition, an anti-separation member 31 for preventing the temperature sensor 30 from separating can be installed in the sensor fastening part 116 by forming a protrusion on the outside. The anti-separation member 31 is connected to the protrusion in a state of surrounding the other part of the temperature sensor 30 inserted into the sensor fastening part 116. Accordingly, the anti-separation member 31 can support the temperature sensor 30 through the sensor fastening part 116 to prevent the temperature sensor 30 from separating.

[0049] The sensor fastening part 116 is preferably formed at a position separated from the heater 200 so as to minimize interference caused by the heat of the heater 200 when the temperature sensor 30 measures the temperature of the fluid F.

[0050] The protrusion 117 is provided to protrude inward on the inner wall of the first housing 110. The protrusion 117 will be described below as a structure for supporting the filter part 300.

[0051] The second housing 120 is connected to the first housing 110 and closes the open surface of the first housing 110. For example, the second housing 120 may include an inlet 121, a connection part 122, a pressurizing part 123, and an access port 124.

[0052] The inlet 121 enables the fluid F to flow into the interior of the housing 100.

[0053] The connecting part 122 is disposed on the surface of the second housing 120 adjacent to the second region 113. The connecting part 122 is inserted into a hole formed in the second region 113. In addition, the connecting part 122 is provided in a form with a bent end to support the second housing 120 by the first housing 110.

[0054] Here, the connecting member 101 and the connecting part 122 can prevent the second housing 120 from detaching. For example, when the surface of the second housing 120 adjacent to the first housing 110 is circular, the connecting member 101 and the connecting part 122 can prevent the second housing 120 connected to the first housing 110 from rotating.

[0055] The pressing part 123 is arranged to extend from the second housing 120 toward the support part 210 disposed in the first region 112. The pressing part 123 can press the support part 210 toward the first region 112 side by connecting the second housing 120 to the first housing 110. The pressing part 123 can support the support part 210 through the first region 112, and the support part 210 can enhance the blocking of fluid communication between the first space 100a and the second space 100b.

[0056] The inlet 124 is arranged to be in close contact with the inner wall of the first housing 110 when the second housing 120 is connected to the first housing 110. In addition, a sealing member S is provided between the inlet 124 and the inner wall of the first housing 110, so as to be able to block the fluid communication between the external air and the second space 100b.

[0057] On the other hand, the heater 200 is disposed inside the housing 100. The heater 200 extends from the second space 100b to the first space 100a. The heater 200 generates heat based on the electricity supplied from the wire, thereby heating the fluid F.

[0058] For example, the heater 200 may include a support part 210, a heating part 220, and a head 230. The heater 200 can be connected to the support part 210, the heating part 220, and the head 230 by an adhesive. Here, the adhesive can be coated between the support part 210 and the heating part 220 and between the heating part 220 and the head 230 (see Figure 3 "G" in

[0059] The adhesive can be prepared as a frit containing SiO2 and Al2O3. The adhesive can be coated on the above-mentioned connecting part G, and the support part 210 and the heating part 220, and the heating part 220 and the head part 230 can be connected through a high-temperature firing process. The adhesive can improve the heat resistance and durability of the heater 200, thereby minimizing the leakage that may occur at the connecting part G. Therefore, the heater 200 according to the present embodiment can prevent the leakage of the fluid F even during long-term operation by ensuring heat resistance and durability, thereby ensuring the stability of the heating device 1000.

[0060] Here, reference will be made to Figure 5 and Figure 6 to describe the structure of the heater 200 according to the present embodiment.

[0061] Figure 5 is an exploded perspective view of the heater, Figure 6 is an exploded perspective view of the pipe.

[0062] As Figure 5 and Figure 6 shown, the heater 200 according to the present embodiment may include a support part 210, a heating part 220, and a head part 230.

[0063] As described above, the support part 210 is disposed in the first region 112 to separate the first space 100a and the second space 100b. Moreover, the support part 210 supports the heating part 220.

[0064] The heating part 220 extends from the second space 100b to the first space 100a. The heating part 220 forms a path through which the fluid F flows into the first space 100a. In addition, the heating part 220 heats the fluid F by generating heat based on the electric power supplied by the wire.

[0065] For example, the heating part 220 may include a first pipe 221, a second pipe 223, and a heating module 225.

[0066] The first pipe 221 is arranged such that the fluid can flow into the interior. The second pipe 223 is arranged to surround the outer surface of the first pipe 221. The heating module 225 is arranged between the first pipe 221 and the second pipe 223. Here, the portion between the first pipe 221 and the second pipe 223 is configured to block the fluid communication with the outside to prevent the leakage of the heating module 225.

[0067] The heating part 220 heats the fluid F adjacent to the inner side of the first pipe 221 and the outer side of the second pipe 223 by generating heat from the heating module 225. The heating part 220 may be arranged on the central axis passing through the first space 100a and the second space 100b to effectively heat the fluid F. However, there is no limitation on the position of the heating part 220.

[0068] In addition, the heating unit 220 is configured to prevent overheating of the heating module 225. For example, the first pipe 221 and the second pipe 223 may be made of a ceramic material. In addition, the first pipe 221 and the second pipe 223 may have a thickness that is damaged when heated to a preset temperature. Therefore, when the heating module 225 overheats, at least a part of the first pipe 221 and the second pipe 223 may be damaged. As a result, the fluid F enters between the first pipe 221 and the second pipe 223, the power supply to the heating module 225 is cut off, and thus the heat generation of the heating module 225 stops, thereby preventing overheating.

[0069] The head 230 is connected to the heating unit 220 to form a path through which the fluid F moves to the heating unit 220. The head 230 may be set in a tubular shape. The head 230 is disposed in the second space 100b and is in close contact with the second housing 120. In addition, a sealing member S is provided between the second housing 120 and the head 230, so that leakage of the fluid F into the second space 100b during introduction can be prevented.

[0070] For another example Figures 2 to 4 As shown, the filter unit 300 according to the present embodiment is disposed in the first housing 110. The filter unit 300 prevents foreign matter from flowing out through the outlet 111. The filter unit 300 can filter foreign matter that may be generated from the housing 100 and / or the heater 200 during long-term operation of the heating device 1000. In addition, the filter unit 300 can also filter debris generated from the first pipe 221 and / or the second pipe 223 when the first pipe 221 and / or the second pipe 223 are damaged, so as to prevent overheating of the heater 200.

[0071] For example, the filter unit 300 may include a filter member 310 and a filter support member 320.

[0072] The filter member 310 is configured to filter foreign matter of a specified size. The filter member 310 may be arranged adjacent to the outlet 111. In addition, the filter member 310 may be formed with holes in a slit shape having a specified width.

[0073] The filter support member 320 supports the filter member 310 within the first housing 110. The filter support member 320 can be arranged to surround the inner wall of the first housing 110. At least a part of the filter support member 320 can be arranged to be supported by the protrusion 117. Here, the protrusion 117 can be formed such that a part thereof is adjacent to the support portion 210. That is, the filter support member 320 can be supported by the protrusion 117 in a state of being in contact with the support portion 210. In addition, a support protrusion 321 is formed in the filter support member 320 so as to straddle the protrusion 117. Accordingly, the filter support member 320 can be supported by the support protrusion 321 that straddles the protrusion 117, and separation (e.g., rotation) thereof within the first housing 110 can be prevented.

[0074] On the other hand, the operation of the heating device 1000 will be described below with reference to Figure 7 The operation of the heating device 1000 will be described with reference to Figure 4 The operation of the heating device 1000 described below can be understood.

[0075] Figure 7 is a flowchart showing the operation sequence of the fluid heating device for battery heating of an electric vehicle according to the present embodiment.

[0076] As Figure 7 shown, the heating device 1000 according to the present embodiment can heat the fluid F and perform battery heating through a fluid inflow step S100, a fluid heating step S200, and a fluid discharge step S300.

[0077] First, in the inflow step S100, when the external temperature of the electric vehicle is lower than a preset temperature, the heating device 1000 can operate. As the fluid circulates in the heating system, the fluid F can flow into the housing 100 through the inlet 121.

[0078] Then, in the fluid heating step S200, the fluid F passes through the head 230 and enters the interior of the heating unit 220. In this case, the fluid F can be heated while being in contact with the first pipe 221. In addition, the fluid F flows into the first space 100a and moves toward the bottom surface of the first housing 110. In this case, the temperature sensor 30 measures the temperature of the fluid F flowing into the first space 100a. The temperature sensor 30 provides the measured temperature of the fluid F to the outside.

[0079] Here, when the heater 200 overheats due to a failure of the heating module 225, a part of the heating unit 220 can be damaged, thereby preventing overheating of the heating module 225.

[0080] In addition, in the fluid discharging step S300, the heated fluid F can flow out through the outlet 111 and be supplied to the vehicle battery side. In this case, the filter unit 300 prevents foreign matters from flowing out together with the fluid F, thereby preventing damage or failure of the heating system caused by foreign matters. On the other hand, the fluid F supplied to the vehicle battery side can heat the vehicle battery, thereby ensuring the performance of the vehicle battery.

[0081] In this way, the electric vehicle heating device 1000 according to the present disclosure can heat the fluid to heat the battery. In addition, the present disclosure can ensure the heat resistance and durability of the heater and prevent leakage, and can ensure the stability of the heating system by preventing foreign matters from flowing out of the heating system.

[0082] Therefore, the present disclosure has the effect of preventing the heating device from malfunctioning due to leakage.

[0083] In addition, the present disclosure also has the effect of ensuring durability to extend the life of the heating device.

[0084] The embodiments of the present disclosure described above and shown in the drawings should not be construed as limiting the technical concept of the present disclosure. The protection scope of the present disclosure is only defined by the matters described in the claims, and those with ordinary knowledge in the technical field of the present disclosure can improve and change the technical concept of the present disclosure in various forms. Therefore, as long as these improvements and modifications are obvious to those of ordinary skill in the art, they all fall within the protection scope of the present disclosure.

Claims

1. A fluid heating device for battery heating of an electric vehicle, characterized in that, The fluid heating device includes: a housing configured to allow a fluid to flow in and out and form a first space for heating the fluid; and a heater configured to form a path for the fluid to flow into the first space and heat the fluid, wherein the heater includes: a support portion disposed inside the housing and configured to form a second space separated from the first space, a heating portion connected to the support portion by an adhesive, at least a part of the heating portion extending into the first space, the heating portion forming a path for the fluid to flow into the first space, and the heating portion being configured to heat the fluid, and a head connected to the heating portion by the adhesive and configured to form a path through which the fluid is supplied to the heating portion.

2. The fluid heating device according to claim 1, characterized in that, The housing includes: a first housing including an open surface and a first region extending from an inner wall and configured to dispose the support portion; and a second housing configured to close the open surface of the first housing and including a pressing portion extending toward the support portion to press the support portion toward the first region.

3. The fluid heating device according to claim 2, wherein, The first housing includes: a second region extending outward from a side wall and arranged such that at least a part of the second housing makes surface contact; and a third region provided at an end of the second region to surround an edge of the second housing, and a connecting member is provided in the third region, the connecting member passing through the third region to be inserted into the edge of the second housing and the connecting member connecting the first housing to the second housing.

4. The fluid heating device according to claim 3, characterized in that, The second housing includes a connecting portion formed on a surface adjacent to the second region and inserted into a hole formed in the second region to connect the second housing to the first housing.

5. The fluid heating device according to claim 2, characterized in that, The heating portion includes: a first pipe configured such that the fluid can enter the interior of the first pipe; a second pipe configured to surround an outer surface of the first pipe; and a heating module provided between the first pipe and the second pipe to generate heat, and when the heating module exceeds a preset temperature and generates heat, at least a part of the first pipe and the second pipe ruptures, thereby preventing overheating of the heating module.

6. The fluid heating device according to claim 5, characterized in that, The fluid flows into the first space along an inner surface of the first pipe and flows out of the first space along an outer surface of the second pipe.

7. The fluid heating device according to claim 1, characterized in that, A filter portion is further included, the filter portion being provided between the support portion and a protrusion provided on an inner wall of the housing and configured to prevent foreign matter from flowing out of the interior of the housing together with the fluid.

8. The fluid heating device according to claim 7, characterized in that, The filter portion includes: a filter member configured to filter the foreign matter from the fluid; and A filter support member, the filter support member being arranged to surround at least a part of the inner wall of the housing and being configured to support the filter member within the first space.

9. The fluid heating device according to claim 8, characterized in that, The filter support member includes a support protrusion, the support protrusion being arranged to surround at least a part of the protrusion and being configured to prevent the filter support member from disengaging.

10. The fluid heating device according to claim 1, characterized in that, The adhesive contains frit.

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