CN220087495U - Vehicle-mounted heating module and vehicle-mounted thermistor heater thereof - Google Patents

Abstract

The utility model discloses a vehicle-mounted thermistor heater, which comprises a heat conduction flat tube and a positive temperature coefficient thermistor assembly, wherein the heat conduction flat tube is provided with a connecting port, the positive temperature coefficient thermistor assembly penetrates through the heat conduction flat tube and comprises a plurality of ceramic resistors, a first electrode plate, a second electrode plate, a third electrode plate and an insulating layer, the ceramic resistors are arranged in a row and comprise a first ceramic resistor and a second ceramic resistor, the first ceramic resistor is arranged between the connecting port and the second ceramic resistor, the first electrode plate is attached to the first ceramic resistor, the second electrode plate is attached to the second ceramic resistor, the third electrode plate is attached to the other side of each ceramic resistor, and the first electrode plate, the second electrode plate and the third electrode plate are respectively provided with a first lap joint terminal, a second lap joint terminal and a third lap joint terminal which penetrate through the connecting port, and the insulating layer covers part of the second electrode plate and is blocked between the first electrode plate and the second electrode plate.

Description

Vehicle-mounted heating module and vehicle-mounted thermistor heater thereof

Technical Field

The present utility model relates to a heater, and more particularly to a vehicle-mounted thermistor heater and a vehicle-mounted heating module having the same.

Background

The positive temperature coefficient (PTC, positive thermal coefficient) heater has the advantages of long service life, energy saving, electricity saving, low thermal resistance, high heat conversion efficiency and the like, and is gradually applied to the heater in a vehicle (such as a cushion, a backrest, a handle … and the like) because potential safety hazards such as scalding or fire hazard and the like caused by the fact that an electric heating tube burns and reds due to heating are avoided. The common PTC heater comprises a heat conducting pipe, a ceramic resistor and fins, and heat energy generated by energizing the ceramic resistor is transferred to the fins through the heat conducting pipe for dispersing.

However, since the heat exchange efficiency and the heating power of the PTC heater are both related to the volumes of the fins and the ceramic resistor, the PTC heater has a certain volume, and thus cannot be heated independently for a smaller area or be heated by switching between different areas, so that the PTC heater has low universal applicability and high energy consumption.

The heat exchange area of the fin is related to the heat exchange efficiency, and the volume of the ceramic resistor is also related to the heating power, so the PTC heater has a certain volume and cannot be aimed at a small area

In view of the above, the present inventors have made intensive studies and have made an effort to solve the above-mentioned problems by combining the application of the theories, which is an object of the present inventors to improve the above-mentioned prior art.

Disclosure of Invention

The utility model mainly aims at heating the vehicle-mounted heating module or the vehicle-mounted thermistor heater at corresponding positions according to different requirements, so that energy consumption is saved.

In order to achieve the above-mentioned objective, the present utility model provides a vehicle-mounted thermistor heater, which comprises a heat-conducting flat tube and a positive temperature coefficient thermistor assembly, wherein one end of the heat-conducting flat tube is provided with a connection port, the positive temperature coefficient thermistor assembly is arranged in the heat-conducting flat tube in a penetrating way, the positive temperature coefficient thermistor assembly comprises a plurality of ceramic resistors, a first electrode plate, a second electrode plate, a third electrode plate and an insulating layer, the ceramic resistors are arranged in a row and comprise a first ceramic resistor and a second ceramic resistor, the first ceramic resistor is configured between the connection port and the second ceramic resistor, the first electrode plate is arranged at one side of each ceramic resistor and is correspondingly attached to the first ceramic resistor, the first electrode plate is provided with a first lap-joint terminal penetrating out of the connection port, the second electrode plate is arranged at the same side of each ceramic resistor and is correspondingly attached to the second ceramic resistor, the second electrode plate is provided with a second lap-joint terminal penetrating out of the connection port, the third electrode plate is arranged at the other side of each ceramic resistor and is attached to each ceramic resistor, the third electrode plate is provided with a third lap-joint terminal penetrating out of the connection port and is partially covered between the first electrode plate and the insulating layer.

In an embodiment of the utility model, the other end of the heat conduction flat tube is a closed end.

In an embodiment of the utility model, the device further includes two insulating sleeves, wherein each insulating sleeve is oppositely overlapped and spliced with each other and jointly covers the first electrode plate, the second electrode plate, the third electrode plate and each ceramic resistor.

In one embodiment of the present utility model, any one insulating sleeve and another insulating sleeve have an overlapping length, and the overlapping length is greater than five millimeters.

In an embodiment of the present utility model, the device further includes an insulating sleeve, wherein the insulating sleeve covers the first electrode plate, the second electrode plate, the third electrode plate and each ceramic resistor.

In an embodiment of the utility model, the first electrode plate is disposed between the connection port and the second electrode plate, and a connection section extends towards the connection port to enable the second lap terminal to pass through the connection port.

In an embodiment of the utility model, the insulating layer encapsulates the connection section.

In an embodiment of the present utility model, the first lap terminal, the second lap terminal and the third lap terminal are parallel and juxtaposed to each other.

In order to achieve the above-mentioned objective, the present utility model further provides a vehicle-mounted heating module, including a plurality of vehicle-mounted thermistor heaters and a plurality of fin members, each vehicle-mounted thermistor heater includes a heat-conducting flat tube and a positive temperature coefficient thermistor assembly, one end of the heat-conducting flat tube has a connection port, the positive temperature coefficient thermistor assembly is disposed in the heat-conducting flat tube in a penetrating manner, the positive temperature coefficient thermistor assembly includes a plurality of ceramic resistors, a first electrode plate, a second electrode plate, a third electrode plate and an insulating layer, each ceramic resistor includes a first ceramic resistor and a second ceramic resistor, the first ceramic resistor is disposed between the connection port and the second ceramic resistor, the first electrode plate is disposed on one side of each ceramic resistor and is correspondingly attached to the first ceramic resistor, the first electrode plate has a first lap-joint terminal penetrating from the connection port, the second electrode plate and the first electrode plate is correspondingly attached to the second ceramic resistor, the second electrode plate has a second lap-joint terminal penetrating from the connection port, the third electrode plate is disposed on the other side of each ceramic resistor and is attached to the other side of each ceramic resistor, each ceramic resistor has a third electrode plate and is disposed between the first flat tube and the corresponding to the first flat tube, each fin member has a corresponding to the first flat electrode plate and a second flat plate, and each flat plate is correspondingly attached to each flat plate has a heat-conducting flat wall.

In an embodiment of the present utility model, the structural strength of each fin member is greater than the structural strength of each heat conduction flat tube.

According to the vehicle-mounted heating module and the vehicle-mounted thermistor heater thereof, the first electrode plate and the second electrode plate are respectively corresponding to the first ceramic resistor and the second ceramic resistor, and are attached and configured, and are blocked between the first electrode plate and the second electrode plate by the insulating layer, so that heating can be performed at corresponding positions according to different requirements, and energy consumption is saved.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the utility model.

Fig. 1 is an exploded perspective view of a ptc thermistor assembly according to the present utility model.

Fig. 2 is a perspective view of a ptc thermistor assembly according to the present utility model.

Fig. 3 is a perspective view of another view of the ptc thermistor assembly according to the present utility model.

Fig. 4 is an exploded perspective view of the ptc thermistor assembly and the insulation sleeve according to the present utility model.

Fig. 5 is an exploded perspective view of the in-vehicle thermistor heater of the present utility model.

Fig. 6 is a perspective view of the vehicle-mounted thermistor heater according to the present utility model.

Fig. 7 is a side view of each of the in-vehicle thermistor heaters and each of the fin members of the present utility model.

Fig. 8 is a perspective view of a heating module according to the present utility model.

Reference numerals:

100 vehicle-mounted thermistor heater

110 heat conduction flat tube

111 connecting port

112 closed end

113 accommodating space

114 planar wall

115 cambered surface wall

120 positive temperature coefficient thermistor assembly

121 ceramic resistor

1211 first ceramic resistor

1212 second ceramic resistor

122 first electrode plate

1221 first overlap terminal

123 second electrode plate

1231 second overlap terminal

1232 connecting section

1233 first extension section

1234 second extension segment

124 third electrode plate

1241 third overlap terminal

125 insulating layer

130 insulating sleeve

200 Fin Structure

300 floor board

400 insulating frame

410 connector interface

Detailed Description

In the description, numerous specific details are provided to provide a thorough understanding of embodiments of the utility model; however, it will be apparent to one skilled in the art that the present utility model may be practiced without one or more of these specific details; in other instances, well-known details are not shown or described in order to avoid obscuring the utility model.

The detailed description and technical content of the present utility model are described below with reference to the drawings, which are, however, provided for reference and illustration only and are not intended to limit the present utility model.

In the description of the present utility model, it should be understood that the terms "front side," "rear side," "left side," "right side," "front end," "rear end," "longitudinal," "transverse," "vertical," "top," "bottom," etc. refer to an orientation or positional relationship based on the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

As used herein, terms such as "first," "second," "third," "fourth," and "fifth," etc., describe various elements, components, regions, layers and/or sections that are not limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", "third", "fourth" and "fifth" as used herein do not imply a sequence or order.

The terms "substantially" and "about" are used herein and not otherwise defined as describing and claiming minor variations. When combined with an event or circumstance, the term can include the exact whereabouts of the event or circumstance and the whereabouts of the event or circumstance to a close approximation. For example, when combined with a numerical value, the term can include a variation of less than or equal to + -10%, such as less than or equal to + -5%, less than or equal to + -4%, less than or equal to + -3%, less than or equal to + -2%, less than or equal to + -1%, less than or equal to + -0.5%, less than or equal to + -0.1%, or less than or equal to + -0.05% of the numerical value.

The present utility model provides a vehicle-mounted thermistor heater 100 for heating cold air blown out from an automobile, a fuel cell vehicle, an electric vehicle (e.g., a seat cushion, a backrest, a handle …, etc.), or an air conditioner. Referring to fig. 1 to 5, the vehicle-mounted thermistor heater 100 of the present utility model includes a heat conductive flat tube 110 and a ptc thermistor assembly 120.

In the embodiment, the heat conduction flat tube 110 may be made of aluminum or copper, but the utility model is not limited thereto. A connecting port 111 and a closed end 112 are respectively disposed at two ends of the heat conducting flat tube 110. The heat conducting flat tube 110 has an accommodating space 113 inside, and the accommodating space 113 is communicated with the outside of the heat conducting flat tube 110 through the connecting port 111. The opposite side surfaces of the flat heat conducting tube 110 are respectively provided with a parallel plane wall 114. In the present embodiment, the two side edges of the heat-conducting flat tube 110 are respectively configured with an arc wall 115, but the utility model is not limited thereto, and for example, the two side edges of the heat-conducting flat tube 110 may be planar so that the heat-conducting flat tube 110 has a rectangular tubular shape. The reason why the arc wall 115 is adopted in the present embodiment is that the arc wall 115 has a larger heat exchange area than a plane in the case where the heat conduction flat tube 110 has the same thickness.

The ptc thermistor assembly 120 is inserted into the accommodating space 113 of the flat heat pipe 110. Specifically, the ptc thermistor assembly 120 is attached to the inner walls of the two planar walls 114 of the flat heat pipe 110, so that the ptc thermistor assembly 120 is thermally connected to the flat heat pipe 110. In the embodiment, in order to enhance the heat conduction effect between the ptc thermistor assembly 120 and the flat heat conduction tube 110, a heat conduction glue (not shown) is coated between the ptc thermistor assembly 120 and the flat heat conduction tube 110, but the utility model is not limited thereto. The ptc thermistor assembly 120 includes a plurality of ceramic resistors 121, a first electrode pad 122, a second electrode pad 123, a third electrode pad 124, and an insulating layer 125.

Each ceramic resistor 121 is arranged in a row and includes at least one first ceramic resistor 1211 and at least one second ceramic resistor 1212. The first ceramic resistor 1211 is disposed between the connection port 111 and the second ceramic resistor 1212. In the present embodiment, the number of the first ceramic resistors 1211 and the second ceramic resistors 1212 is three, but the utility model is not limited thereto, and the number of the first ceramic resistors 1211 and the second ceramic resistors 1212 can be adjusted according to the required heating length or width. Referring to fig. 1 and 2, the first ceramic resistors 1211 are sequentially arranged in parallel along the longitudinal direction of the flat heat pipe 110 from the connection port 111, and the second ceramic resistors 1212 are sequentially arranged in parallel along the longitudinal direction of the flat heat pipe 110, i.e. the first ceramic resistors 1211 are still arranged between the connection port 111 and the second ceramic resistors 1212, but there is no contact between any two ceramic resistors 121.

In the embodiment, the first electrode piece 122 may be made of aluminum or copper, but the utility model is not limited thereto. The first electrode pad 122 is provided at one side of each ceramic resistor 121, and is attached to the first ceramic resistor 1211 correspondingly. Specifically, the first electrode pads 122 in the present embodiment are attached to each of the first ceramic resistors 1211, that is, the first electrode pads 122 are attached to three first ceramic resistors 1211 at the same time. The first electrode piece 122 has a first lap terminal 1221 that passes through the connection port 111 of the heat conduction flat tube 110.

In the embodiment, the second electrode plate 123 may be made of aluminum or copper, but the utility model is not limited thereto. The second electrode pad 123 is provided on the same side of each ceramic resistor 121 together with the first electrode pad 122, is parallel to each other, and is attached to the second ceramic resistor 1212. Specifically, the second electrode pads 123 in the present embodiment are attached to each second ceramic resistor 1212, that is, the second electrode pads 123 are simultaneously attached to three second ceramic resistors 1212, and the second electrode pads 123 and the first electrode pads 122 are arranged in parallel along the longitudinal direction of the flat heat conductive tube 110. The second electrode plate 123 has a second lap terminal 1231 passing through the connection port 111 of the heat conduction flat tube 110.

In the present embodiment, the third electrode plate 124 may be made of aluminum or copper, but the utility model is not limited thereto. The third electrode sheet 124 is provided on the other side of each ceramic resistor 121, and is attached to each ceramic resistor 121. Specifically, the third electrode pad 124 is attached to all the ceramic resistors 121, so that the third electrode pad 124 in the present embodiment is attached to the three first ceramic resistors 1211 and the three second ceramic resistors 1212 at the same time, and the area of the third electrode pad 124 is approximately the sum of the first electrode pad 122 and the second electrode pad 123. The third electrode plate 124 has a third lap terminal 1241 passing through the connection port 111 of the heat conduction flat tube 110. The first landing terminal 1221, the second landing terminal 1231 and the third landing terminal 1241 are all penetrated out from the connection port 111, and the first landing terminal 1221, the second landing terminal 1231 and the third landing terminal 1241 are parallel and juxtaposed to each other, so that connection wiring with a power supply can be facilitated.

In the present embodiment, the insulating layer 125 is a polyimide (Kapton) film or an alumina ceramic substrate, but the utility model is not limited thereto. The insulating layer 125 covers a portion of the second electrode tab 123 and is blocked between the first electrode tab 122 and the second electrode tab 123. Therefore, the configuration of the insulating layer 125 can avoid the first electrode plate 122 and the second electrode plate 123 from forming a lap joint conduction, thereby ensuring that the first electrode plate 122 and the second electrode plate 123 can operate independently without mutual interference, so that the heater can heat corresponding to the first electrode plate 122 and the second electrode plate 123 according to different requirements or at the positions of the first electrode plate and the second electrode plate 123 at the same time, further saving energy consumption and increasing the applicability of different combinations.

Further, referring to fig. 5 and 6, the closed end 112 of the flat heat pipe 110 is formed by directly flattening the end of the flat heat pipe 110 and welding with a laser, so as to form a waterproof seal. Therefore, the arrangement of the sealing rubber ring can be omitted, the cost can be saved, the sealing performance can be effectively ensured, and the consumable (namely the sealing rubber ring) is not required to be maintained, inspected and replaced regularly. It should be noted that, as shown in fig. 5, since the ceramic resistors 121 in the present embodiment are arranged to be biased to one side of the flat heat pipe 110, they are not arranged at the center of the flat heat pipe 110 as in the conventional art. Therefore, when the heat-conducting flat tube 110 is installed and used with an air conditioner, the side edge of the heat-conducting flat tube 110 adjacent to each ceramic resistor 121 is arranged towards the air outlet of the air conditioner, so that the air flow blown out by the air conditioner can be directly contacted with the area of the heat-conducting flat tube 110 corresponding to each ceramic resistor 121 to quickly raise the temperature, thereby effectively raising the power of the vehicle-mounted thermistor heater 100.

Referring back to fig. 4 and 5, the vehicle-mounted thermistor heater 100 of the present utility model further includes at least one insulation sleeve 130. In the present embodiment, the insulating sleeve 130 may be a polyimide (Kapton) film or an alumina ceramic matrix, but the utility model is not limited thereto. The insulating sheath 130 covers the first electrode piece 122, the second electrode piece 123, the third electrode piece 124, and the ceramic resistors 121, thereby insulating them from the heat conduction flat tube 110. In the present embodiment, the number of the insulating sleeves 130 is two, and each insulating sleeve 130 is overlapped and spliced opposite to each other and jointly covers the first electrode piece 122, the second electrode piece 123, the third electrode piece 124 and each ceramic resistor 121. Specifically, the insulating sleeves 130 have a long-strip-shaped U-shaped structure, and the U-shaped openings of the two insulating sleeves 130 are opposite to each other, so that the two insulating sleeves 130 can be overlapped and inserted, and the first electrode piece 122, the second electrode piece 123, the third electrode piece 124 and the ceramic resistors 121 can be wrapped therein. In addition, any insulating sleeve 130 and another insulating sleeve 130 in the present embodiment have an overlapping length. The overlapping length is at least greater than five millimeters (mm), so that the creepage distance of the electrodes can be greater than 8 millimeters (mm), thereby effectively ensuring the insulation effect.

Further, as shown in fig. 1 to 5, since the first electrode tab 122 is disposed between the connection port 111 and the second electrode tab 123, a connection section 1232 is extended toward the connection port 111 to allow the second overlap terminal 1231 to pass through the connection port 111. Specifically, the connection section 1232 includes a first extension section 1233 and a second extension section 1234, the first extension section 1233 extends from the body of the second electrode plate 123 toward the first electrode plate 122, and the second extension section 1234 extends from the side edge of the first extension section 1233 toward the direction of the connection port 111 and is located at the side edge of the first electrode plate 122, so that the connection section 1232 presents an L-shape to avoid interference with the first electrode plate 122. The insulating layer 125 is specifically coated on the connection section 1232, so as to avoid overlapping conduction between the first electrode piece 122 and the second electrode piece 123.

Referring to fig. 7 and 8, the present utility model further provides a vehicle-mounted heating module, which at least includes a plurality of vehicle-mounted thermistor heaters 100 and a plurality of fin members 200 as described above.

In the present embodiment, the fin members 200 are bent into aluminum sheets or copper sheets closely arranged in a wavy manner, but the utility model is not limited thereto. The heat conduction flat tubes 110 and the fin members 200 are arranged in parallel and alternately. Specifically, each planar wall 114 is attached to an adjacent fin member 200 by vacuum brazing. Each fin member 200 projects from a side edge of the attached planar wall 114 and is at least flush with the cambered surface walls 115 on both sides. In addition, the structural strength of each fin member 200 is greater than that of each heat conduction flat tube 110, so as to avoid damage or deformation of the heat conduction flat tube 110 during pressurization. Specifically, the thickness of the fin member 200 is greater than the thickness of the flat heat-conducting tube 110, so that the structural strength of the fin member 200 is greater than that of the flat heat-conducting tube 110, but the utility model is not limited thereto.

Further, as shown in fig. 7, an on-vehicle thermistor heater 100 may be further disposed on top of the fin member 200 at the uppermost part of the drawing, and a bottom plate 300 made of aluminum or copper may be disposed on the bottom of the fin member 200 at the lowermost part of the drawing, so as to enhance heat conduction and heating effects of the top and bottom of the on-vehicle heating module.

Referring to fig. 8 again, the vehicle heating module of the present utility model further includes an insulating frame 400. The insulating frame 400 is integrally formed on the periphery of each on-vehicle thermistor heater 100 and each fin member 200 by plastic injection, and the insulating frame 400 is provided with a connector interface 410 at each connection port 111 corresponding to each on-vehicle thermistor heater 100, so as to facilitate plugging with a butt connector (not shown).

However, the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the scope of the utility model is not limited thereto, i.e. the utility model is not limited thereto but is intended to be limited thereto. The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. The present utility model is capable of other and further embodiments and its several details are capable of modification and variation in light of the present utility model, as will be apparent to those skilled in the art, without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. A vehicle-mounted thermistor heater, comprising:

one end of the heat conduction flat tube is provided with a connecting port; a kind of electronic device with high-pressure air-conditioning system

The positive temperature coefficient thermistor component is arranged in the heat conduction flat tube in a penetrating mode, and comprises:

the ceramic resistors are arranged in a row and comprise a first ceramic resistor and a second ceramic resistor, and the first ceramic resistor is arranged between the connecting port and the second ceramic resistor;

the first electrode plate is arranged on one side of each ceramic resistor and is correspondingly attached to the first ceramic resistor, and the first electrode plate is provided with a first lap joint terminal penetrating out of the connecting port;

the second electrode plate is arranged on the same side of each ceramic resistor as the first electrode plate and is correspondingly attached to the second ceramic resistor, and the second electrode plate is provided with a second lap joint terminal penetrating out of the connecting port;

the third electrode plate is arranged on the other side of each ceramic resistor and is attached to each ceramic resistor, and the third electrode plate is provided with a third lap terminal penetrating out of the connecting port; a kind of electronic device with high-pressure air-conditioning system

And the insulating layer is used for coating a part of the second electrode plate and blocking the first electrode plate and the second electrode plate.

2. The vehicle mounted thermistor heater of claim 1, wherein the other end of the heat conducting flat tube is a closed end.

3. The vehicle-mounted thermistor heater of claim 1, further comprising two insulating sleeves, each of said insulating sleeves being inserted in overlapping relation relative to each other and jointly covering said first electrode pad, said second electrode pad, said third electrode pad and each of said ceramic resistors.

4. A vehicle mounted thermistor heater as claimed in claim 3, wherein any one of said insulating sleeves has an overlap length with the other of said insulating sleeves, said overlap length being greater than five millimeters.

5. The vehicle-mounted thermistor heater of claim 1, further comprising an insulating sleeve surrounding said first electrode pad, said second electrode pad, said third electrode pad and each of said ceramic resistors.

6. The vehicle-mounted thermistor heater of claim 1, wherein the first electrode tab is disposed between the connection port and the second electrode tab, the second electrode tab extending toward the connection port with a connecting section so that the second overlap terminal passes out of the connection port.

7. The vehicle mounted thermistor heater of claim 6, wherein said insulating layer encases said connection segments.

8. The vehicle-mounted thermistor heater of claim 1, wherein the first landing terminal, the second landing terminal and the third landing terminal are disposed parallel and side-by-side to each other.

9. A vehicle heating module, comprising:

the vehicle-mounted thermistor heater according to any one of claims 1 to 8, wherein two opposite side surfaces of each heat conduction flat tube are respectively provided with a plane wall, and each positive temperature coefficient thermistor component is respectively attached to each plane wall of the corresponding heat conduction flat tube; a kind of electronic device with high-pressure air-conditioning system

And the plurality of fin members, the heat conduction flat pipes and the fin members are arranged in parallel and are arranged in an interpenetration way, and each plane wall is respectively attached to the adjacent fin members.

10. The vehicle heating module of claim 9, wherein each of the fin members has a structural strength greater than a structural strength of each of the heat conductive flat tubes.