Automotive liquid ceramic heater with temperature detection function

Abstract

The utility model relates to the technical field of thermal management, in particular to an automotive liquid ceramic heater with a temperature detection function. An automotive liquid ceramic heater with a temperature detection function comprises a ceramic body, a heating resistance wire and a temperature sensor resistance wire. The ceramic body comprises an upper ceramic layer and a lower ceramic layer; the upper ceramic layer is located above the lower ceramic layer, at least one mounting space is defined between the upper ceramic layer and the lower ceramic layer, and the temperature sensor resistance wire and the heating resistance wire are both located in any mounting space; the heating resistance wire is configured to generate heat after being electrified to complete external heating; the resistance wire of the temperature sensor is configured to change the resistance value along with high temperature change so as to realize temperature detection. Therefore, the temperature of the MCH can be detected, and the temperature acquisition precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management, in particular to a vehicle liquid ceramic heater with a temperature detection function. Background Art

[0002] MCH ceramic heater, that is, alumina ceramic heater, as a heating element used in automotive thermal management systems, has the advantages of high heating efficiency, low energy consumption, long service life and good stability.

[0003] However, the existing ceramic heater does not have a temperature detection function, and an external temperature detection device is required to detect the surface temperature of the MCH, which is costly, has low temperature detection accuracy, and low reliability. Utility Model Content

[0004] The purpose of the utility model includes, for example, providing a vehicle liquid ceramic heater with a temperature detection function, which can detect the temperature of MCH, has higher temperature acquisition accuracy, and at the same time eliminates the external temperature detection device, thereby reducing the cost to a greater extent and simplifying the process.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the utility model provides a vehicle liquid ceramic heater with a temperature detection function, comprising:

[0007] Ceramic body, heating resistance wire, temperature sensor resistance wire;

[0008] The ceramic body comprises an upper ceramic layer and a lower ceramic layer; the upper ceramic layer is located above the lower ceramic layer, and the upper ceramic layer and the lower ceramic layer enclose at least one installation space, and the temperature sensor resistance wire and the heating resistance wire are both located in any of the installation spaces;

[0009] The heating resistance wire is configured to generate heat after being energized to achieve external heating; the temperature sensor resistance wire is configured to be able to change resistance value as temperature changes to achieve temperature detection.

[0010] In an optional implementation, the temperature sensor resistance wire and the heating resistance wire are located in the same installation space.

[0011] In an optional embodiment, the bottom of the upper ceramic layer has a first mounting groove, and the temperature sensor resistance wire and the heating resistance wire are both arranged in the first mounting groove;

[0012] Or the top of the lower ceramic layer has a second mounting groove; the temperature sensor resistance wire and the heating resistance wire are both arranged in the second mounting groove.

[0013] In an optional embodiment, the bottom of the upper ceramic layer has a first mounting groove, and the top of the lower ceramic layer has a second mounting groove; the first mounting groove and the second mounting groove together enclose the mounting space.

[0014] In an optional embodiment, within the projection of the ceramic body in the height direction, the temperature sensor resistance wire is located between the gaps of the heating resistance wires.

[0015] In an optional embodiment, the temperature sensor resistance wire includes a connecting section and a plurality of matching sections, and the matching sections all extend along the width direction of the ceramic body; the plurality of matching sections are connected end to end, and the matching sections are connected to the electrodes through the connecting section;

[0016] The heating resistance wire comprises a lead wire segment and a plurality of extension segments, wherein the extension segments all extend along the width direction of the ceramic body; and the plurality of extension segments are all connected to the lead wire segment;

[0017] The matching section is arranged between adjacent extending sections.

[0018] In an optional embodiment, the connecting section is connected to the mating sections on both sides of the length direction of the ceramic body, and the connecting section is located at the same end of the width direction of the mating section; the connecting section and the mating section have an angle so that the connecting section extends toward the length direction of the ceramic body; the connecting section and the mating section enclose a gap to accommodate the lead section.

[0019] In an optional embodiment, the temperature sensor resistance wire is printed on the upper ceramic layer or the lower ceramic layer.

[0020] In an optional embodiment, it also includes an intermediate ceramic layer; along the height direction of the ceramic body, the upper ceramic layer, the intermediate ceramic layer, and the lower ceramic layer are connected in sequence, and the upper ceramic layer and the intermediate ceramic layer, the intermediate ceramic layer and the lower ceramic layer are respectively enclosed to form separate installation spaces; the temperature sensor resistance wire and the heating resistance wire are respectively located in different installation spaces.

[0021] In an optional embodiment, the ceramic body is an integrally formed structure.

[0022] The beneficial effects of the embodiments of the present utility model include, for example:

[0023] Such a vehicle liquid ceramic heater with temperature detection function includes a ceramic body, a heating resistor wire, and a temperature sensor resistor wire. Compared with the ceramic heater in the prior art, because it does not have a temperature detection function, an external temperature detection device is required to detect the surface temperature of the MCH, which is costly, and the temperature detection accuracy is low and the reliability is low; this scheme uses a temperature sensor resistor wire set in the ceramic body, and the temperature sensor resistor wire has a temperature coefficient resistor wire, which is used to detect the temperature of the MCH, so that the ceramic heater itself can realize the temperature detection function. At the same time, because the temperature sensor resistor wire is directly set in the ceramic body, the temperature acquisition accuracy is higher and the process is simple, the external temperature detection device is cancelled, and the production cost and processing difficulty are reduced to a greater extent. Furthermore, the heating resistor wire is used to generate heat after power is turned on to achieve the effect of external heating. The way that the temperature sensor resistor wire and the heating resistor wire are both located in any installation space ensures the flexibility of the structure, and at the same time ensures that external heating and temperature detection can be met at the same time. In summary, the vehicle liquid ceramic heater with temperature detection function of this scheme has a temperature detection function, a simple structure, reduced cost, and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic structural diagram of a vehicle liquid ceramic heater with a temperature detection function according to an embodiment of the utility model;

[0026] Figure 2 It is a schematic cross-sectional view of a vehicle liquid ceramic heater with a temperature detection function according to an embodiment of the utility model;

[0027] Figure 3 It is a schematic cross-sectional structural diagram of another viewing angle of the vehicle liquid ceramic heater with temperature detection function according to an embodiment of the utility model;

[0028] Figure 4 This is a cross-sectional structural schematic diagram of a structural schematic diagram of a vehicle liquid ceramic heater with a temperature detection function according to another embodiment of the present invention.

[0029] Icon: 100-ceramic body; 101-installation space; 110-upper ceramic layer; 120-lower ceramic layer; 130-middle ceramic layer; 200-heating resistance wire; 210-lead section; 220-extension section; 300-temperature sensor resistance wire; 310-connecting section; 320-matching section; 21-electrode; 22-gap; 23-lead head. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0034] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0036] Please refer to Figure 1 and Figure 2 This embodiment provides a vehicle liquid ceramic heater with a temperature detection function, including a ceramic body 100, a heating resistance wire 200, and a temperature sensor resistance wire 300.

[0037] The ceramic body 100 includes an upper ceramic layer 110 and a lower ceramic layer 120; the upper ceramic layer 110 is located above the lower ceramic layer 120, and the upper ceramic layer 110 and the lower ceramic layer 120 enclose at least one installation space 101, and the temperature sensor resistance wire 300 and the heating resistance wire 200 are both located in any installation space 101;

[0038] The heating resistor 200 is configured to generate heat after being energized to achieve external heating; the temperature sensor resistor 300 is configured to be able to change its resistance value as the temperature changes to achieve temperature detection.

[0039] Compared with the ceramic heater of the prior art, because it does not have a temperature detection function, an external temperature detection device is required to detect the surface temperature of the MCH, which is costly, and the temperature detection accuracy is low and the reliability is low; this scheme uses a temperature sensor resistor 300 arranged in the ceramic body 100. The temperature sensor resistor 300 has a resistance wire with a temperature coefficient, which is used to detect the temperature of the MCH, so that the ceramic heater itself can realize the function of temperature detection. At the same time, because the temperature sensor resistor 300 is directly arranged in the ceramic body 100, the temperature acquisition accuracy is higher, the process is simple, the external temperature detection device is cancelled, and the production cost and processing difficulty are reduced to a greater extent. Furthermore, the heating resistor 200 is used to generate heat after power is turned on to achieve the effect of external heating. The way that the temperature sensor resistor 300 and the heating resistor 200 are both located in any installation space 101 ensures the flexibility of the structure, and at the same time ensures that external heating and temperature detection can be satisfied at the same time. In summary, the automotive liquid ceramic heater with temperature detection function of this scheme has a temperature detection function, a simple structure, reduced cost, and good reliability.

[0040] Please continue reading Figure 1 , Figure 2 , Figure 3 and Figure 4 , to understand more structural details of the automotive liquid ceramic heater with temperature detection function. Optionally, the temperature sensor resistance wire 300 can be a thermistor.

[0041] Thermistor is a sensor resistor whose resistance value changes with temperature. According to the temperature coefficient, it is divided into positive temperature coefficient thermistor and negative temperature coefficient thermistor. The resistance value of positive temperature coefficient thermistor increases with the increase of temperature, and the resistance value of negative temperature coefficient thermistor decreases with the increase of temperature. They are both semiconductor devices.

[0042] Optionally, in this embodiment of the present invention, the temperature sensor resistance wire 300 is printed on the upper ceramic layer 110 or the lower ceramic layer 120. The printing arrangement has the advantages of convenient setting and convenient processing.

[0043] In this embodiment of the present invention, the ceramic body 100 is an integrally formed structure. The integral ceramic body 100 has better stability.

[0044] Further, such as Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment of the utility model, the temperature sensor resistor wire 300 and the heating resistor wire 200 are located in the same installation space 101. That is, the automotive liquid ceramic heater with temperature detection function has only one installation space 101, and the temperature sensor resistor wire 300 and the heating resistor wire 200 are both located in the installation space 101.

[0045] Optionally, the bottom of the upper ceramic layer 110 has a first mounting groove, and the temperature sensor resistor wire 300 and the heating resistor wire 200 are both arranged in the first mounting groove; or the top of the lower ceramic layer 120 has a second mounting groove; the temperature sensor resistor wire 300 and the heating resistor wire 200 are both arranged in the second mounting groove. That is, the temperature sensor resistor wire 300 and the heating resistor wire 200 are simultaneously arranged in the mounting groove of the upper ceramic layer 110, or simultaneously arranged in the mounting groove of the lower ceramic layer 120.

[0046] It is not difficult to understand that, as an optional embodiment, the bottom of the upper ceramic layer 110 has a first mounting groove, and the top of the lower ceramic layer 120 has a second mounting groove; the first mounting groove and the second mounting groove together enclose the mounting space 101. That is, the temperature sensor resistance wire 300 and the heating resistance wire 200 are located in the mounting space 101 formed by the mounting groove of the upper ceramic layer 110 and the mounting groove of the lower ceramic layer 120. This is just an example and is not limited.

[0047] In this embodiment of the utility model, the temperature sensor resistance wire 300 is located between the gaps of the heating resistance wire 200 in the projection of the height direction of the ceramic body 100. Such an arrangement can further improve the space utilization of the ceramic body 100, and can save the space occupied by the temperature sensor resistance wire 300 and the heating resistance wire 200. Specifically, the temperature sensor resistance wire 300 is located as a whole in the space enclosed by the edge of the positive projection of the heating resistance wire 200. And the temperature sensor resistance wire 300 is located in the gap of the heating resistance wire 200 to ensure that the temperature sensor resistance wire 300 and the heating resistance wire 200 will not cross.

[0048] from Figure 3It can be seen that in this embodiment of the utility model, the temperature sensor resistance wire 300 includes a connecting section 310 and a plurality of matching sections 320, and the matching sections 320 all extend along the width direction of the ceramic body 100; the plurality of matching sections 320 are connected end to end, and the matching sections 320 are connected to the electrode 21 through the connecting section 310; the heating resistance wire 200 includes a lead section 210 and a plurality of extension sections 220, and the extension sections 220 all extend along the width direction of the ceramic body 100; the plurality of extension sections 220 are all connected to the lead section 210; the matching sections 320 are arranged between adjacent extension sections 220. After the end of the matching section 320 is connected to the electrode 21 through the connecting section 310, the electric energy from the electrode 21 can be transmitted to the heating resistance wire 200 and generate heat, thereby completing the heating operation.

[0049] Optionally, the matching segments 320 are all extended in a straight line. In the middle position along the length direction of the ceramic body 100, multiple matching segments 320 are connected end to end to extend in an S-shaped reciprocating rotation. The matching segments 320 and the electrode 21 are both extended along the width direction of the ceramic body 100, and the connecting segment 310 is extended along the length direction of the ceramic body 100 so that the matching segments 320 and the electrode 21 are parallel to each other, and the connecting segment 310 is perpendicular to the matching segments 320 and the electrode 21 respectively.

[0050] Furthermore, in this embodiment of the utility model, the connecting section 310 is connected to the mating sections 320 on both sides of the length direction of the ceramic body 100, and the connecting section 310 is located at the same end of the width direction of the mating section 320; the connecting section 310 and the mating section 320 have an angle so that the connecting section 310 extends toward the length direction of the ceramic body 100; the connecting section 310 and the mating section 320 enclose a gap 22 for accommodating the lead section 210.

[0051] It can also be seen from the figure that the extension section 220 is composed of two parallel lines formed by bending the lead wire. A plurality of extension sections 220 are evenly arranged along the length direction of the ceramic body 100. The end of the lead section 210 is connected to the lead head 23.

[0052] like Figure 4In an optional embodiment, the automotive liquid ceramic heater with temperature detection function further includes an intermediate ceramic layer 130; along the height direction of the ceramic body 100, the upper ceramic layer 110, the intermediate ceramic layer 130, and the lower ceramic layer 120 are sequentially connected, and the upper ceramic layer 110 and the intermediate ceramic layer 130, the intermediate ceramic layer 130 and the lower ceramic layer 120 are respectively enclosed to form a separate installation space 101; the temperature sensor resistance wire 300 and the heating resistance wire 200 are respectively located in different installation spaces 101. That is, the heating resistance wire 200 and the temperature sensor resistance wire 300 are respectively located on the upper and lower sides of the intermediate ceramic layer 130. Such an arrangement can completely separate the temperature sensor resistance wire 300 and the heating resistance wire 200, and can ensure the stability and reliability of the temperature sensor resistance wire 300 when measuring temperature.

[0053] In summary, the embodiment of the utility model provides a vehicle liquid ceramic heater with a temperature detection function, which has at least the following advantages:

[0054] Such a vehicle liquid ceramic heater with a temperature detection function has a temperature detection function, a simple structure, a reduced cost, and good reliability.

[0055] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A vehicle liquid ceramic heater with temperature detection function, characterized in that: include: Ceramic body, heating resistance wire, temperature sensor resistance wire; The ceramic body comprises an upper ceramic layer and a lower ceramic layer; the upper ceramic layer is located above the lower ceramic layer, and the upper ceramic layer and the lower ceramic layer enclose at least one installation space, and the temperature sensor resistance wire and the heating resistance wire are both located in any of the installation spaces; The heating resistance wire is configured to generate heat after being energized to achieve external heating; the temperature sensor resistance wire is configured to change resistance value as temperature changes to achieve temperature detection; The temperature sensor resistance wire and the heating resistance wire are located in the same installation space; In the projection of the ceramic body in the height direction, the temperature sensor resistance wire is located between the gaps of the heating resistance wires; The temperature sensor resistance wire includes a connecting section and a plurality of matching sections, and the matching sections all extend along the width direction of the ceramic body; the plurality of matching sections are connected end to end, and the matching section is connected to the electrode through the connecting section; the heating resistance wire includes a lead section and a plurality of extension sections, and the extension sections all extend along the width direction of the ceramic body; the plurality of extension sections are connected to the lead section; the matching section is arranged between adjacent extension sections.

2. The vehicle liquid ceramic heater with temperature detection function according to claim 1, characterized in that: The bottom of the upper ceramic layer has a first mounting groove, and the temperature sensor resistance wire and the heating resistance wire are both arranged in the first mounting groove; Or the top of the lower ceramic layer has a second mounting groove; the temperature sensor resistance wire and the heating resistance wire are both arranged in the second mounting groove.

3. The vehicle liquid ceramic heater with temperature detection function according to claim 1, characterized in that: The bottom of the upper ceramic layer has a first mounting groove, and the top of the lower ceramic layer has a second mounting groove; the first mounting groove and the second mounting groove together enclose the mounting space.

4. The vehicle liquid ceramic heater with temperature detection function according to claim 1, characterized in that: The connecting section is connected to the matching sections on both sides of the length direction of the ceramic body, and the connecting section is located at the same end of the width direction of the matching section; the connecting section and the matching section have an angle so that the connecting section extends toward the length direction of the ceramic body; the connecting section and the matching section enclose a gap to accommodate the lead section.

5. The vehicle liquid ceramic heater with temperature detection function according to claim 1, characterized in that: The temperature sensor resistance wire is printed on the upper ceramic layer or the lower ceramic layer.

6. The vehicle liquid ceramic heater with temperature detection function according to claim 1, characterized in that: The ceramic body also includes an intermediate ceramic layer; along the height direction of the ceramic body, the upper ceramic layer, the intermediate ceramic layer, and the lower ceramic layer are connected in sequence, and the upper ceramic layer and the intermediate ceramic layer, the intermediate ceramic layer and the lower ceramic layer are respectively enclosed to form separate installation spaces; the temperature sensor resistance wire and the heating resistance wire are respectively located in different installation spaces.

7. The vehicle liquid ceramic heater with temperature detection function according to claim 1, characterized in that: The ceramic body is an integrally formed structure.

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