Thick film heater and automobile

Abstract

The utility model provides a thick film heater and an automobile, and relates to the technical field of heaters. The thick film heater provided by the utility model comprises a shell assembly, a thick film heating assembly, a sealing assembly and a functional element, the shell assembly comprises a first shell and a second shell, the bottom of the first shell is provided with a liquid flow channel, and the outer wall of the first shell is provided with a liquid inlet and a liquid outlet which are communicated with the flow channel; the thick film heating assembly is arranged at the bottom of the first shell, the thick film heating assembly is used for heating liquid in the runner, and the second shell covers the side, away from the first shell, of the thick film heating assembly; the sealing assembly comprises a first sealing piece, and the first sealing piece is arranged between the thick film heating assembly and the bottom of the first shell in a sealed mode. The functional element is arranged on the side, away from the thick film heating assembly, of the first shell, and the thick film heating assembly is electrically connected to the functional element. The thick film heater and the automobile are small in size and high in heating power.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a thick film heater and an automobile. Background Art

[0002] Due to the heating, defrosting of the passenger compartment and the heating and heat preservation requirements of the battery pack in new energy vehicles, an auxiliary electric heater device is needed.

[0003] The existing electric heater devices mainly include air heating type and water heating type. Among them, the air heating type is generally used for heating and defrosting of the passenger compartment and cannot take into account the heating of the battery pack. Moreover, due to the compact structure of the front compartment of new energy vehicle models, especially hybrid vehicle models, it is generally required that the heater has the characteristics of small volume and high power. However, the above heater devices are difficult to meet these requirements.

[0004] Therefore, how to provide a heater with small volume and high power is a technical problem that needs to be solved urgently in this field. Summary of the Utility Model

[0005] In order to solve at least one problem mentioned in the background art, the utility model provides a thick film heater and an automobile, which have the characteristics of small volume and high heating power.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] In a first aspect, the utility model provides a thick film heater, which includes a housing assembly, a thick film heating assembly, a sealing assembly and a functional element. The housing assembly includes a first housing and a second housing. The bottom of the first housing has a liquid flow channel, and the outer wall of the first housing has a liquid inlet and a liquid outlet communicated with the flow channel;

[0008] The thick film heating assembly is arranged on the outer side of the bottom of the first housing. The thick film heating assembly is used for heating the liquid in the flow channel. The second housing covers the side of the thick film heating assembly facing away from the first housing;

[0009] The sealing assembly includes a first sealing member, and the first sealing member is hermetically arranged between the thick film heating assembly and the bottom of the first housing;

[0010] The functional element is arranged on the side of the first housing facing away from the thick film heating assembly. The thick film heating assembly is electrically connected to the functional element, and the functional element is at least used to control the switch of the thick film heating assembly for heating.

[0011] As an optional implementation manner, a flow disturbing plate is arranged in the flow channel, and there is a gap of 0.1 mm - 0.2 mm between the flow disturbing plate and the thick film heating assembly.

[0012] As an alternative embodiment, the thick film heating component includes a heat conducting substrate, an inner insulating layer, a resistive heating layer, an outer insulating layer, and a bus bar. The heat conducting substrate covers the bottom of the first housing, and a first seal is sealed between the heat conducting substrate and the first housing;

[0013] The inner insulating layer, the resistive heating layer, and the outer insulating layer are sequentially attached to the side of the heat conducting substrate facing away from the first housing, and the bus bar is electrically connected between the resistive heating layer and the functional element.

[0014] As an alternative embodiment, the edge of the first housing has a first connection hole, the edge of the heat conducting substrate has a second connection hole, and the edge of the second housing has a third connection hole. The first connection hole, the second connection hole, and the third connection hole are connected by a threaded connector to detachably connect the first housing, the thick film heating component, and the second housing together.

[0015] As an alternative embodiment, the second housing has a support post facing the thick film heating component, and the support post and the thick film heating component have a spacing of 0.1 mm - 1.2 mm.

[0016] As an alternative embodiment, the heat conducting substrate has a first mounting groove, the first housing has a second mounting groove, one end of the bus bar is electrically connected to the resistive heating layer, and the other end of the bus bar is electrically connected to the functional element after passing through the first mounting groove and the second mounting groove in sequence.

[0017] As an alternative embodiment, the sealing assembly further includes a second seal, and the second seal is sealingly disposed between the second housing and the thick film heating component.

[0018] As an alternative embodiment, the heat conducting substrate is a stainless steel plate, and the thickness of the heat conducting substrate is 2 mm - 3 mm.

[0019] As an alternative embodiment, the side of the first housing facing the heat conducting substrate has a first sealing groove, and the side of the second housing facing the heat conducting substrate has a second sealing groove. The first seal and the second seal are elastic sealing rings. The first seal is installed in the first sealing groove, and the second seal is installed in the second sealing groove.

[0020] In a second aspect, the present utility model further provides an automobile, including the thick film heater in the first aspect.

[0021] The thick-film heater provided by the present utility model includes a housing assembly, a thick-film heating assembly, a sealing assembly, and a functional element. The housing assembly includes a first housing and a second housing. The bottom of the first housing has a liquid flow channel, and the outer wall of the first housing has a liquid inlet and a liquid outlet communicating with the flow channel. The thick-film heating assembly is disposed at the bottom of the first housing and is used to heat the liquid in the flow channel. The second housing covers the side of the thick-film heating assembly facing away from the first housing. The sealing assembly includes a first seal, and the first seal is hermetically disposed between the thick-film heating assembly and the bottom of the first housing. The functional element is disposed on the side of the first housing facing away from the thick-film heating assembly, and the thick-film heating assembly is electrically connected to the functional element. The functional element is at least used to control the on / off of the heating of the thick-film heating assembly. The thick-film heater provided by the present utility model not only avoids the restriction of the size of the thick-film heating assembly by the first housing and increases the heating area of the thick-film heating assembly by providing a flow channel at the bottom of the first housing and disposing the thick-film heating assembly outside the bottom of the first housing, but also enables the thick-film heating assembly and the flow channel to be closely arranged, facilitating the timely transfer of the heat dissipated by the thick-film heating assembly to the liquid in the flow channel and improving the heat transfer efficiency. Therefore, the thick-film heater provided by the present utility model is not only structurally compact and small in size, but also can improve the heating efficiency of the thick-film heater. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic diagram of the overall structure of the thick-film heater provided by the embodiment of the present utility model;

[0024] Figure 2 It is an exploded view of the thick-film heater provided by the embodiment of the present utility model;

[0025] Figure 3 It is a schematic diagram of the structure of the first housing in the thick-film heater provided by the embodiment of the present utility model;

[0026] Figure 4 It is an exploded view of the thick-film heating assembly in the thick-film heater provided by the embodiment of the present utility model.

[0027] Description of the Reference Numerals:

[0028] 100 - Thick-film heater;

[0029] 110 - Housing assembly;

[0030] 111 - First housing; 1111 - Flow channel; 1112 - Turbulence plate; 1113 - Second installation groove; 1114 - First connection hole; 1115 - First sealing groove; 1116 - Liquid inlet; 1117; Liquid outlet; 112 - Second housing; 1121 - Third connection hole; 1122 - Second sealing groove; 1123 - Support column;

[0031] 120 - Thick film heating assembly;

[0032] 121 - Heat conducting substrate; 1211 - First installation groove; 1212 - Second connection hole; 122 - Inner insulating layer; 123 - Resistance heating layer; 124 - Outer insulating layer; 125 - Bus bar;

[0033] 130 - Sealing assembly;

[0034] 131 - First seal; 132 - Second seal;

[0035] 140 - Functional element;

[0036] 141 - Printed circuit board; 142 - Chip. Detailed implementation mode

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0038] In the application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0039] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific situation.

[0040] In addition, the terms "installed", "set up", "provided with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, components, or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components, or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] Currently, due to the needs of passenger compartment heating, defrosting, and heating and insulation of the battery pack in new energy vehicles, an auxiliary electric heater device is required. Common heating devices include PTC heaters, thick film heaters, or resistance wire heaters. Since the internal space in the front compartment of new energy vehicles, especially hybrid models, is generally relatively compact, generally, the heater is required to have characteristics such as small volume and high heating efficiency.

[0043] In view of this, the present utility model provides a thick film heater 100. By arranging a flow channel 1111 at the bottom of the first housing 111 and arranging the thick film heating assembly 120 outside the bottom of the first housing 111, not only can the restriction of the size of the thick film heating assembly 120 by the first housing 111 be avoided, the heating area of the thick film heating assembly 120 can be increased, but also the thick film heating assembly 120 and the flow channel 1111 can be arranged adjacent to each other, facilitating the heat dissipated by the thick film heating assembly 120 to be timely transferred to the liquid in the flow channel 1111, improving the heat transfer efficiency. Thus, the thick film heater 100 provided by the present utility model is not only structurally compact but also can improve the heating efficiency of the thick film heater 100.

[0044] Reference can be made to Figures 1 to 4, an embodiment of the present utility model provides a thick film heater 100, which includes a housing assembly 110, a thick film heating assembly 120, a sealing assembly 130, and a functional element 140. The housing assembly 110 includes a first housing 111 and a second housing 112. The bottom of the first housing 111 has a liquid flow channel 1111, and the outer wall of the first housing 111 has a liquid inlet 1116 and a liquid outlet 1117 that communicate with the flow channel 1111. The thick film heating assembly 120 is disposed outside the bottom of the first housing 111 and is used to heat the liquid in the flow channel 1111. The second housing 112 covers the side of the thick film heating assembly 120 facing away from the first housing 111. The sealing assembly 130 includes a first seal 131, and the first seal 131 is sealingly disposed between the thick film heating assembly 120 and the bottom of the first housing 111. The functional element 140 is disposed on the side of the first housing 111 facing away from the thick film heating assembly 120. The thick film heating assembly 120 is electrically connected to the functional element 140, and the functional element 140 is at least used to control the on-off of the heating of the thick film heating assembly 120.

[0045] It can be understood that, among them, liquid water can circulate in the flow channel 1111. The liquid water enters from the liquid inlet 1116, passes through the flow channel 1111, and then flows out from the liquid outlet 1117. The thick film heating assembly 120 is used for generating heat, the functional element 140 can be used to control the on-off of the heating of the thick film heating assembly 120, and the heat dissipated by the thick film heating assembly 120 can be transferred to the liquid in the flow channel 1111. The side of the flow channel 1111 facing the thick film heating assembly 120 can be an open structure. The thick film heating assembly 120 covers this open area and is sealingly disposed through the first seal 131. Since the thick film heating assembly 120 is disposed outside the first housing 111, the size of the thick film heating assembly 120 is not limited by the size of the first housing 111 and can have a larger heat generating area.

[0046] Among them, the functional element 140 can specifically include a printed circuit board 141 and a chip 142. The printed circuit board 141 and the chip 142 are disposed in the first housing 111 and on the side of the flow channel 1111 facing away from the thick film heating assembly 120. The thick film heating assembly 120, the printed circuit board 141, and the chip 142 are electrically connected, and the chip 142 can control the on-off of the heating of the thick film heating assembly 120.

[0047] In the embodiment of the present utility model, the thick film heater 100 is provided by arranging a flow channel 1111 at the bottom of the first housing 111 and arranging the thick film heating assembly 120 outside the bottom of the first housing 111. This not only avoids the restriction of the size of the thick film heating assembly 120 by the first housing 111, improves the heating area of the thick film heating assembly 120, but also enables the thick film heating assembly 120 and the flow channel 1111 to be arranged adjacent to each other, facilitating the timely transfer of the heat dissipated by the thick film heating assembly 120 to the liquid in the flow channel 1111, and improving the heat transfer efficiency. Therefore, the thick film heater 100 provided by the present utility model is not only structurally compact and small in size, but also can improve the heating efficiency of the thick film heater 100.

[0048] In the above embodiment, a turbulator 1112 can be arranged in the flow channel 1111, and there is a gap of 0.1 mm - 0.2 mm between the turbulator 1112 and the thick film heating assembly 120. Among them, arranging the turbulator 1112 can promote the more sufficient mixing of the liquid in the flow channel 1111 and improve the heat transfer efficiency; the turbulator 1112 can also disrupt the boundary layer of the liquid flow, reduce the thermal resistance, and make the heat transfer more uniform and efficient; in addition, the turbulator 1112 can also extend the residence time of the liquid in the flow channel 1111 and make the fluid fully heated. Making there be a gap of 0.1 mm - 0.2 mm between the turbulator 1112 and the thick film heating assembly 120 can cool down the thick film heating assembly 120 through this gap. It can be understood that if the turbulator 1112 is in direct contact with the thick film heating assembly 120, the part of the thick film heating assembly 120 in contact with the turbulator 1112 may have local overheating due to insufficient heat dissipation.

[0049] In the above embodiment, the thick film heating assembly 120 can include a heat-conducting substrate 121, an inner insulating layer 122, a resistive heating layer 123, an outer insulating layer 124, and a bus bar 125. The heat-conducting substrate 121 covers the bottom of the first housing 111, and a first seal 131 is sealed between the heat-conducting substrate 121 and the first housing 111; the inner insulating layer 122, the resistive heating layer 123, and the outer insulating layer 124 are sequentially attached to the side of the heat-conducting substrate 121 facing away from the first housing 111, and the bus bar 125 is electrically connected between the resistive heating layer and the functional element 140. Among them, the resistive heating layer 123 serves as a heating element and can be clamped between the inner insulating layer 122 and the outer insulating layer 124 to avoid electric leakage and improve safety performance. The heat dissipated by the resistive heating layer 123 can be sequentially transferred to the inner insulating layer 122 and the heat-conducting substrate 121 and then to the liquid in the flow channel 1111. The heat transfer distance is short and the heat transfer area is large, improving the heat transfer efficiency.

[0050] In the above embodiments, a first connection hole 1114 may be provided at the edge of the first housing 111, a second connection hole 1212 may be provided at the edge of the heat-conducting substrate 121, and a third connection hole 1121 may be provided at the edge of the second housing 112. The first connection hole 1114, the second connection hole 1212, and the third connection hole 1121 are connected by a threaded connector to detachably connect the first housing 111, the thick-film heating assembly 120, and the second housing 112 together. Connecting the first connection hole 1114, the second connection hole 1212, and the third connection hole 1121 by a threaded connector can improve the centering between the three, making the structure of the thick-film heater 100 more compact and reliable.

[0051] In the above embodiments, the heat-conducting substrate 121 may have a first installation groove 1211, the first housing 111 may have a second installation groove 1113, one end of the busbar 125 is electrically connected to the resistive heating layer 123, and the other end of the busbar 125 sequentially passes through the first installation groove 1211 and the second installation groove 1113 and is then electrically connected to the functional element 140. By passing the busbar 125 through the first installation groove 1211 and the second installation groove 1113 into the first housing 111, space can be saved and the structure of the thick-film heater 100 can be made more compact.

[0052] In the above embodiments, the sealing assembly 130 may further include a second seal 132, and the second seal 132 is sealingly disposed between the second housing 112 and the thick-film heating assembly 120. The second seal 132 can seal between the second housing 112 and the thick-film heating assembly 120 to prevent external impurities and moisture from entering and protect the thick-film heating assembly 120.

[0053] In the above embodiments, the heat-conducting substrate 121 may be a stainless steel plate, and the thickness of the heat-conducting substrate 121 is 2 mm - 3 mm. Among them, the stainless steel plate may have good heat conductivity and can quickly transfer the heat dissipated by the resistive heating layer 123 to the fluid in the flow channel 1111, with high heat transfer efficiency. The thickness of the heat-conducting substrate 121 should not be too large or too small. If the thickness of the heat-conducting substrate 121 is too large, the heat conduction efficiency will be affected. If the thickness of the heat-conducting substrate 121 is too small, the strength and compressive resistance will be reduced, and deformation may occur under the action of the fluid in the flow channel 1111.

[0054] In the above embodiments, a first sealing groove 1115 may be provided on the side of the first housing 111 facing the heat-conducting substrate 121, and a second sealing groove 1122 may be provided on the side of the second housing 112 facing the heat-conducting substrate 121. The first sealing member 131 and the second sealing member 132 are elastic sealing rings. The first sealing member 131 is installed in the first sealing groove 1115, and the second sealing member 132 is installed in the second sealing groove 1122. By installing the first sealing member 131 and the second sealing member 132 in the corresponding sealing grooves respectively, the reliability and sealing performance of the installation of the sealing members can be improved.

[0055] In the above embodiments, the second housing 112 has a support post 1123 facing the thick-film heating assembly 120. There is a spacing of 0.1 mm - 1.2 mm between the support post 1123 and the thick-film heating assembly 120. In this way, when the thick-film heater 100 assembly deforms, the support post 1123 can support on the surface of the thick-film heating assembly 120, reducing the deformation amount of the thick-film heating assembly 120, thereby avoiding the risk of leakage.

[0056] In the above embodiments, the liquid inlet 1116 and the liquid outlet 1117 may also be located on the same side of the first housing 111. In this way, it is convenient for the connection and layout of the external water pipes of the thick-film heater 100.

[0057] In addition, an embodiment of the present utility model further provides an automobile, including the thick-film heater 100 in the above embodiments. The thick-film heater 100 includes a housing assembly 110, a thick-film heating assembly 120, a sealing assembly 130, and a functional element 140. The housing assembly 110 includes a first housing 111 and a second housing 112. The bottom of the first housing 111 has a liquid flow channel 1111, and the outer wall of the first housing 111 has a liquid inlet 1116 and a liquid outlet 1117 communicating with the flow channel 1111. The thick-film heating assembly 120 is disposed at the bottom of the first housing 111, and the thick-film heating assembly 120 is used for heating the liquid in the flow channel 1111. The second housing 112 covers the side of the thick-film heating assembly 120 facing away from the first housing 111. The sealing assembly 130 includes a first sealing member 131, and the first sealing member 131 is sealingly disposed between the thick-film heating assembly 120 and the bottom of the first housing 111. The functional element 140 is disposed on the side of the first housing 111 facing away from the thick-film heating assembly 120. The thick-film heating assembly 120 is electrically connected to the functional element 140, and the functional element 140 is at least used to control the on-off of the heating of the thick-film heating assembly 120.

[0058] In the embodiment of the present utility model, the thick film heater 100 is provided with a flow channel 1111 at the bottom of the first housing 111, and the thick film heating assembly 120 is arranged on the outer side of the bottom of the first housing 111. This not only avoids the restriction of the size of the thick film heating assembly 120 by the first housing 111, improves the heating area of the thick film heating assembly 120, but also enables the thick film heating assembly 120 and the flow channel 1111 to be arranged adjacent to each other, facilitating the timely transfer of the heat dissipated by the thick film heating assembly 120 to the liquid in the flow channel 1111, improving the structural compactness and heat transfer efficiency of the thick film heater 100, thereby improving the internal space and heating efficiency of the vehicle.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A thick film heater, characterized in that: It comprises a shell assembly, a thick film heating assembly, a sealing assembly and a functional element, wherein the shell assembly comprises a first shell and a second shell, the bottom of the first shell has a liquid flow channel, and the outer wall of the first shell has a liquid inlet and a liquid outlet communicated with the flow channel; The thick film heating component is arranged on the outer side of the bottom of the first shell, and the thick film heating component is used to heat the liquid in the flow channel, and the second shell covers the side of the thick film heating component away from the first shell; The sealing assembly includes a first sealing member, wherein the first sealing member is sealingly disposed between the thick film heating assembly and the bottom of the first shell; The functional element is arranged on a side of the first shell away from the thick film heating component, the thick film heating component is electrically connected to the functional element, and the functional element is at least used to control a switch for heating the thick film heating component.

2. The thick film heater according to claim 1, characterized in that A spoiler is arranged in the flow channel, and a gap of 0.1 mm to 0.2 mm is provided between the spoiler and the thick film heating component.

3. The thick film heater according to claim 2, characterized in that The thick film heating assembly comprises a heat-conducting substrate, an inner insulating layer, a resistive heating layer, an outer insulating layer and a busbar, wherein the heat-conducting substrate covers the bottom of the first shell, and the first sealing member is sealed between the heat-conducting substrate and the first shell; The inner insulating layer, the resistance heating layer and the outer insulating layer are sequentially attached to a side of the thermal conductive substrate away from the first shell, and the busbar is electrically connected between the resistance heating layer and the functional element.

4. The thick film heater according to claim 3, characterized in that The edge of the first shell has a first connecting hole, the edge of the heat-conducting substrate has a second connecting hole, and the edge of the second shell has a third connecting hole. The first connecting hole, the second connecting hole and the third connecting hole are connected by threaded connectors to detachably connect the first shell, the thick film heating assembly and the second shell together.

5. The thick film heater according to claim 4, characterized in that The second shell has a support column facing the thick film heating component, and a distance between the support column and the thick film heating component is 0.1 mm-1.2 mm.

6. The thick film heater according to claim 5, characterized in that The thermal conductive substrate has a first mounting groove, the first shell has a second mounting groove, one end of the busbar is electrically connected to the resistive heating layer, and the other end of the busbar is electrically connected to the functional element after passing through the first mounting groove and the second mounting groove in sequence.

7. The thick film heater according to claim 6, characterized in that The sealing assembly further comprises a second sealing member, wherein the second sealing member is sealingly disposed between the second shell and the thick film heating assembly.

8. The thick film heater according to claim 7, characterized in that The heat-conducting substrate is a stainless steel plate, and the thickness of the heat-conducting substrate is 2 mm-3 mm.

9. The thick film heater according to claim 8, characterized in that The first shell has a first sealing groove on one side facing the heat-conducting substrate, the second shell has a second sealing groove on one side facing the heat-conducting substrate, the first seal and the second seal are elastic sealing rings, the first seal is installed in the first sealing groove, and the second seal is installed in the second sealing groove.

10. An automobile, characterized in that: The thick film heater comprises the thick film heater as claimed in any one of claims 1 to 9.

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