Heater confluence structure and heater assembly

Abstract

The utility model provides a heater confluence structure and a heater assembly, and relates to the field of heating products. The heater confluence structure comprises a heater shell, a heating module and a main circuit board, wherein the heater shell is provided with an equipment cavity and a positioning through hole communicated with the equipment cavity; the heating module comprises a heating piece (not shown in the figure) and two conductive pins, and the two conductive pins are both connected with the heating piece; the conductive pin comprises a first connecting section and a second connecting section which are connected and arranged at an included angle, the first connecting section and the heating piece are integrally formed, and the second connecting section is fixedly connected with the main circuit board; the heating module is located outside the equipment cavity, the main circuit board is located in the equipment cavity, and the conductive pins are arranged in the positioning through holes in a penetrating mode. The confluence structure is simple in design, convenient to assemble, low in cost, not prone to poor contact in the using process, and stable and reliable to use.

Description

Technical Field

[0001] The utility model relates to the field of heating products, in particular to a heater confluence structure and a heater assembly. Background Art

[0002] At present, heating products have been widely used in many fields. For example, existing electric vehicles are equipped with heaters that can adjust the temperature of the interior environment and other components. Generally, heating products are mainly composed of multiple groups of heating modules, each of which has two wiring lugs. It is usually necessary to pre-install the heating module in a housing or heat sink, and then connect it to a power source. In the prior art, the heating module and the circuit board are connected through a busbar assembly. The busbar assembly includes a busbar and a plurality of busbar metal sheets. The busbar metal sheets are fixed to the busbar by buckles or screws, and in order to ensure safety, there is a spacing between adjacent busbar metal sheets. The wiring lugs of the heating module are connected to the busbar metal sheets through pins, and the busbar metal sheets are connected to the main circuit board through pins.

[0003] The inventors have found that the existing heater confluence structure has at least the following disadvantages:

[0004] A busbar needs to be set up, which has a complex structure and high processing cost. In addition, the electrical connection is achieved through plug-in matching, which may cause poor contact, resulting in short circuit, high failure rate, and high maintenance or overhaul cost. Utility Model Content

[0005] The utility model aims to provide a heater confluence structure and a heater assembly, which can simplify the structure, reduce processing costs, improve the firmness of the combination, and are less likely to have poor contact, thereby reducing operating costs.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a heater confluence structure, comprising:

[0008] A heater shell, a heating module and a main circuit board, wherein the heater shell is provided with a device cavity and a positioning through hole connected to the device cavity; the heating module comprises a heating element and two conductive pins, and the two conductive pins are connected to the heating element; the conductive pin comprises a first connecting section and a second connecting section which are connected and arranged at an angle, the first connecting section is integrally formed with the heating element, and the second connecting section is fixedly connected to the main circuit board; the heating module is located outside the device cavity, the main circuit board is located inside the device cavity, and the conductive pin is passed through the positioning through hole.

[0009] In an optional embodiment, a plurality of welding holes are provided on the main circuit board, and the conductive pins are inserted into corresponding welding holes.

[0010] Based on the above scheme, the conductive pin is inserted into the welding hole. Firstly, the welding hole can be used to locate the position of the conductive pin relative to the main circuit board to improve assembly efficiency. Secondly, the welding hole provides a limiting effect during welding, so the conductive pin is not easy to shift, the welding quality is high, and the welding defect rate is low, ensuring that the second connecting section can be in good contact with the main circuit board.

[0011] In an optional embodiment, there are multiple welding holes, and some of the multiple welding holes are arranged at intervals in the width direction of the main circuit board to accommodate the insertion of conductive pins of the heating module at different positions.

[0012] Based on the above scheme, by setting up multiple welding holes, it can cooperate with multiple conductive pins, and through the arrangement of the positions of the welding holes, it can adapt to the assembly of conductive pins of multiple heating modules, improve the assembly quality, and improve the assembly efficiency.

[0013] In an optional embodiment, the heater housing includes a mounting plate and an annular enclosure, one end of the annular enclosure is connected to the mounting plate, and the mounting plate and the annular enclosure cooperate to define the equipment cavity; the positioning through hole is arranged through the mounting plate; the heating module and the main circuit board are respectively located on both sides of the mounting plate.

[0014] Based on the above solution, the heater housing has a simple structure and is easy to manufacture. The heating module and the main circuit board are isolated by the mounting plate, which reduces the heat transferred from the heating module to the main circuit board, avoids the main circuit board from being overheated, and improves the stability of the main circuit board.

[0015] In an optional embodiment, the main circuit board is fixed to the mounting plate by fasteners.

[0016] Based on the above solution, the installation method of the main circuit board and the mounting plate is simple, the disassembly and assembly is convenient, and the disassembly and assembly efficiency is high.

[0017] In an optional embodiment, a plurality of positioning columns are protruding from the plate surface of the mounting plate facing away from the heating module, a plurality of fixing holes are provided on the main circuit board, the plurality of positioning columns are respectively inserted into the plurality of fixing holes, the fasteners pass through the fixing holes and are connected to the positioning columns, and the fasteners and the positioning columns cooperate to clamp the main circuit board.

[0018] Based on the above solution, when the main circuit board is assembled with the heater housing, the fixing holes on the main circuit board are plugged into the corresponding positioning posts, which plays a role in rapid positioning and improves assembly efficiency; it also plays a role in preventing mistakes and improving assembly quality. In addition, by providing positioning posts, the thickness of the local position of the mounting plate can be increased, thereby meeting the installation requirements of the fasteners. Compared with the overall thickness of the mounting plate, it can reduce consumables and reduce costs.

[0019] In an optional embodiment, an operating notch is provided on the edge of the main circuit board, and the operating notch and the annular enclosure form an operating hole.

[0020] Based on the above scheme, since the main circuit board is embedded in the equipment cavity, that is, the outward positions of the four edges of the main circuit board are basically blocked by the inner circumference of the annular enclosure, tools and operating holes can be used to disassemble and assemble the main circuit board, so that the main circuit board can smoothly enter or leave the equipment cavity, reduce the difficulty of operation, reduce the probability of the main circuit board being unable to be installed due to tilt during operation, and improve operating efficiency.

[0021] In a second aspect, the utility model provides a heater assembly, the heater assembly comprising:

[0022] The heater bus structure according to any one of the aforementioned embodiments.

[0023] In an optional embodiment, the heater assembly further includes a plurality of water chambers arranged in a stacked manner, a heating cavity is formed between adjacent water chambers, and the heating module is installed in the heating cavity.

[0024] Based on the above solution, the heating module can heat the medium in the water chamber, thereby realizing heat transfer.

[0025] In an optional embodiment, in the stacking direction of the plurality of water chambers, the lengths of the first connecting sections of the conductive pins of the heating modules at different heights are different.

[0026] Based on the above solution, interference between conductive pins of heating modules at different heights or short circuit due to direct contact can be avoided, which not only improves the convenience of assembly but also improves the safety of operation.

[0027] The beneficial effects of the embodiments of the utility model are:

[0028] In summary, the heater busbar structure provided in this embodiment, by directly forming the conductive pins on the heating element of the heating module, and the conductive pins are directly welded to the main circuit board, the structure of the busbar is omitted, the structure is simplified, the intermediate assembly steps are reduced, the assembly efficiency is improved, and the manufacturing cost is reduced. At the same time, the conductive pins are not easy to loosen relative to the main circuit board, and poor contact is not easy to occur, and the operation is stable and reliable. The main circuit board is located in the equipment cavity, and the heating module is located outside the equipment cavity. The two are blocked by the heater housing. The heat generated during the operation of the heating module is not easy to be transferred to the main circuit board, and it is not easy to cause the temperature of the main circuit board to rise. It can reduce the failure rate caused by high temperature, thereby extending the service life of the main circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 A schematic diagram of a heater confluence structure according to an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of a heater housing according to an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the cooperation between the heating module and the main circuit board of an embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the exploded view of the heating module and the main circuit board of an embodiment of the utility model.

[0034] icon:

[0035] 100-heater housing; 101-equipment cavity; 102-positioning through hole; 110-mounting plate; 120-annular enclosure; 130-positioning column; 200-heating module; 210-conductive pin; 211-first connecting section; 212-second connecting section; 213-first pin; 214-second pin; 300-main circuit board; 301-main welding hole; 302-sub-welding hole; 303-fixing hole; 304-operating notch; 400-water chamber. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] 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.

[0038] 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.

[0039] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the prior art, a heater such as a PTC heater generally has a heating core connected to the main circuit board 300 through a busbar, and multiple electrode sheets of the heating core are plugged into a metal card of the busbar, and the metal card is plugged into the main circuit board 300, so the structure is complex and the cost is high. In addition, the use of plug-in to achieve electrical connection is prone to poor contact and the like.

[0043] In view of this, the designer provides a heater busbar structure that eliminates the need for a busbar plate, saves costs, and improves assembly efficiency; at the same time, welding is used to achieve electrical connection to improve adverse effects such as short circuits caused by poor contact.

[0044] Please combine Figure 1-Figure 4 In this embodiment, the heater bus structure includes a heater housing 100, a heating module 200 and a main circuit board 300. The heater housing 100 is provided with a device cavity 101 and a positioning through hole 102 connected to the device cavity 101; the heating module 200 includes a heating element (not shown) and two conductive pins 210, and the two conductive pins 210 are connected to the heating element; the conductive pins 210 include a first connecting section 211 and a second connecting section 212 that are connected and arranged at an angle, the first connecting section 211 is integrally formed with the heating element, and the second connecting section 212 is fixedly connected to the main circuit board 300; the heating module 200 is located outside the device cavity 101, the main circuit board 300 is located inside the device cavity 101, and the conductive pins 210 are penetrated into the positioning through hole 102.

[0045] As described above, the heater confluence structure provided in this embodiment has at least the following advantages:

[0046] By directly forming the conductive pin 210 on the heating element of the heating module 200, and the conductive pin 210 is directly welded to the main circuit board 300, the structure of the busbar is omitted, the structure is simplified, the intermediate assembly steps are reduced, the assembly efficiency is improved, and the manufacturing cost is reduced. At the same time, the conductive pin 210 is not easy to loosen relative to the main circuit board 300, and it is not easy to have poor contact, and the operation is stable and reliable. The main circuit board 300 is located in the equipment cavity 101, and the heating module 200 is located outside the equipment cavity 101. The two are blocked by the heater housing 100. The heat generated during the operation of the heating module 200 is not easy to be transferred to the main circuit board 300, and it is not easy to cause the temperature of the main circuit board 300 to rise. It can reduce the failure rate caused by high temperature, thereby extending the service life of the main circuit board 300.

[0047] It should be understood that the heating module 200 can be a ceramic heating structure, such as a PTC heating structure or an MCH heating structure, wherein the MCH heating structure is used as an example for explanation, and the MCH heating structure includes a first alumina ceramic, a second alumina ceramic and an electric heating wire, the first alumina ceramic is connected to the second alumina ceramic, and the electric heating wire is sintered between the first alumina ceramic and the second alumina ceramic. A metal layer is provided on the surface of the first alumina ceramic or the second alumina ceramic. Among them, the heating wire is the heating element of the heating module 200. A conductive pin 210 is formed at each end of the heating element of the same heating module 200, that is, the two conductive pins 210 and the heating wire are provided as an integrated structure.

[0048] The following embodiments illustrate the details of the heater bus structure of the present application by way of examples.

[0049] In this embodiment, optionally, the main circuit board 300 is set as a rectangular plate, and three welding holes are set on the main circuit board 300, one of which is a main welding hole 301, and the other two are sub-welding holes 302, and the two sub-welding holes 302 are arranged at intervals in the width direction of the main circuit board 300. It should be understood that the three welding holes are all arranged perpendicular to the board surface of the main circuit board 300.

[0050] In addition, the welding hole may be a rectangular hole that matches the shape of the conductive pin 210 .

[0051] Furthermore, a plurality of fixing holes 303 are provided on the main circuit board 300. The fixing holes 303 may be circular holes. The number of the fixing holes 303 may be four and distributed at the four corners of the main circuit board 300. A fastener may be passed through each fixing hole 303 and the fastener may be a screw or the like.

[0052] Please combine Figure 4 Furthermore, an operation notch 304 is provided at the edge of the main circuit board 300. The operation notch 304 is a rectangular hole. The number of the operation notch 304 can be one, and one operation notch 304 is located on one side of the main circuit board 300 in the length direction. Since the main circuit board 300 is embedded in the equipment cavity 101, that is, the outer position of the four edges of the main circuit board 300 is basically blocked by the inner circumference of the annular enclosure 120, when disassembling and assembling the main circuit board 300, tools can be used to cooperate with the operation hole to achieve the main circuit board 300 to smoothly enter or leave the equipment cavity 101, reduce the difficulty of operation, reduce the probability of the main circuit board 300 being unable to be installed due to tilting during operation, and improve the operation efficiency.

[0053] Please combine Figure 2In this embodiment, optionally, the heater housing 100 includes a mounting plate 110 and an annular enclosure 120, one end of the annular enclosure 120 is connected to the mounting plate 110, and the mounting plate 110 and the annular enclosure 120 cooperate to define the equipment cavity 101; the positioning through hole 102 is set through the mounting plate 110; the heating module 200 and the main circuit board 300 are respectively located on both sides of the mounting plate 110. It should be understood that the mounting plate 110 can be a rectangular plate, the annular enclosure 120 can be a rectangular ring plate, and the mounting plate 110 and the annular enclosure 120 can be processed and manufactured in an integrated molding manner, with high structural strength and long service life.

[0054] Furthermore, a plurality of positioning posts 130 are convexly provided on the plate surface of the mounting plate 110 which faces away from the heating module 200. The positioning posts 130 may be cylindrical structures, and each positioning post 130 is provided with a threaded hole. The positioning posts 130 are used to be plugged and matched with the fixing holes 303 on the main circuit board 300. Therefore, when the number of the fixing holes 303 is four, the number of the positioning posts 130 is also four, and the four positioning posts 130 are respectively plugged and matched with the four fixing holes 303 in a one-to-one correspondence. After the main circuit board 300 and the fixing holes 303 are plugged and matched, the fasteners are passed through the fixing holes 303 and connected to the threaded holes on the positioning posts. The fasteners and the positioning posts cooperate to clamp the main circuit board 300, so that the fixed connection between the main circuit board 300 and the heater housing 100 is achieved.

[0055] It should be understood that when the main circuit board 300 is assembled with the heater housing 100, the fixing holes 303 on the main circuit board 300 are plugged into the corresponding positioning posts 130, which plays a role in rapid positioning and improves assembly efficiency; it also plays a role in preventing mistakes and improving assembly quality. In addition, by providing the positioning posts 130, the thickness of the local position of the mounting plate 110 can be increased, thereby meeting the installation requirements of the fasteners, and compared with the overall thickness of the mounting plate 110, it can reduce consumables and reduce costs.

[0056] Please combine Figure 3 and Figure 4 In this embodiment, there are two heating modules 200, which are stacked and arranged at intervals. When the heating modules 200 and the main circuit board 300 are matched with the heater housing 100, the heating modules 200 are arranged in parallel with the main circuit board 300. The conductive pins 210 of the heating module 200 close to the main circuit board 300 are located on the inner side of the conductive pins 210 of the heating module 200 far away from the main circuit board 300, that is, the length of the first connecting section 211 of the conductive pins 210 of the heating module 200 close to the main circuit board 300 is less than the length of the first connecting section 211 of the conductive pins 210 of the heating module 200 far away from the main circuit board 300. In this way, the conductive pins 210 of the two heating modules 200 will not interfere with each other, which is convenient for assembly.

[0057] In one embodiment, the two conductive pins 210 of the heating module 200 are respectively a first pin 213 and a second pin 214. The first pins 213 of the two heating modules 200 are respectively plugged into the two sub-welding holes 302 of the main control circuit board. The second pins 214 of the two heating modules 200 are first welded together and then plugged into the main welding hole 301, so as to realize the parallel setting of the two heating modules 200. When the two second pins 214 are welded, the length of the second connecting section 212 located on the inner side is less than the length of the second connecting section 212 located on the outer side, and the second connecting section 212 located on the inner side is attached to the second connecting section 212 located on the outer side, so that the welding area is large and the welding is firm.

[0058] The heater busbar structure provided in this embodiment eliminates the need for a busbar, saves costs, simplifies assembly steps, and improves assembly efficiency. At the same time, welding is used to achieve electrical connection, which is firmly connected and is not prone to poor contact, making it safe and reliable to use.

[0059] Please combine Figure 1 This embodiment also provides a heater assembly, including a heater confluence structure and a plurality of water chambers 400 arranged in a stacked manner, a heating cavity is formed between adjacent water chambers 400, and a heating module 200 is installed in the heating cavity. It should be understood that the number of water chambers 400 is three and they are connected in sequence, and the three water chambers 400 form two heating cavities, and a heating module 200 is installed in each heating cavity.

[0060] The heater assembly provided in this embodiment has a simple structure, is easy to assemble, and has a long service life.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heater confluence structure, characterized in that: include: A heater housing (100), a heating module (200) and a main circuit board (300), wherein the heater housing (100) is provided with a device cavity (101) and a positioning through hole (102) communicating with the device cavity (101); the heating module (200) comprises a heating element and two conductive pins (210), wherein the two conductive pins (210) are both connected to the heating element; the conductive pins (210) comprise a first connecting section (211) and a second connecting section (212) which are connected and arranged at an angle, wherein the first connecting section (211) is integrally formed with the heating element, and the second connecting section (212) is fixedly connected to the main circuit board (300); the heating module (200) is located outside the device cavity (101), the main circuit board (300) is located inside the device cavity (101), and the conductive pins (210) are inserted into the positioning through hole (102).

2. The heater confluence structure according to claim 1, characterized in that: The main circuit board (300) is provided with a plurality of welding holes, and the conductive pins (210) are inserted into corresponding welding holes.

3. The heater confluence structure according to claim 2, characterized in that: The number of the welding holes is multiple, and some of the multiple welding holes are arranged at intervals in the width direction of the main circuit board (300) to accommodate the insertion of conductive pins (210) of the heating module (200) at different positions.

4. The heater confluence structure according to claim 1, characterized in that: The heater housing (100) comprises a mounting plate (110) and an annular enclosure (120), one end of the annular enclosure (120) is connected to the mounting plate (110), and the mounting plate (110) and the annular enclosure (120) cooperate to define the equipment cavity (101); the positioning through hole (102) is arranged through the mounting plate (110); the heating module (200) and the main circuit board (300) are respectively located on both sides of the mounting plate (110).

5. The heater confluence structure according to claim 4, characterized in that: The main circuit board (300) is fixed to the mounting plate (110) via fasteners.

6. The heater confluence structure according to claim 5, characterized in that: A plurality of positioning posts (130) are protrudingly provided on the plate surface of the mounting plate (110) facing away from the heating module (200), a plurality of fixing holes (303) are provided on the main circuit board (300), the plurality of positioning posts (130) are respectively inserted into the plurality of fixing holes (303), the fasteners pass through the fixing holes (303) and are connected to the positioning posts, and the fasteners and the positioning posts cooperate to clamp the main circuit board (300).

7. The heater confluence structure according to claim 5, characterized in that: An operating notch (304) is provided at the edge of the main circuit board (300), and the operating notch (304) and the annular enclosure plate (120) form an operating hole.

8. A heater assembly, characterized in that: The heater assembly comprises: The heater bus structure according to any one of claims 1 to 7.

9. The heater assembly according to claim 8, characterized in that: The heater assembly further comprises a plurality of water chambers (400) arranged in a stacked manner, a heating cavity is formed between adjacent water chambers (400), and the heating module (200) is installed in the heating cavity.

10. The heater assembly according to claim 9, characterized in that: In the stacking arrangement direction of the plurality of water chambers (400), the lengths of the first connection sections (211) of the conductive pins (210) of the heating modules (200) at different heights are different.

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