An APTC heater assembly

Abstract

The application relates to an APTC heater assembly and relates to the field of electric vehicle air conditioning technology, which comprises a core assembly and a mounting seat, the mounting seat is bolted and fixed on the core assembly, and a first sealing rubber gasket is detachably arranged between the mounting seat and the core assembly; a circuit board assembly is bolted and fixed in the mounting seat, a cover is detachably arranged on the mounting seat, and a second sealing rubber gasket is detachably arranged between the cover and the mounting seat; and a flexible pad layer is fixedly arranged on the shell of the core assembly. The application can provide a good sealing environment for the circuit board assembly in the APTC heater assembly.

Description

Technical Field

[0001] This application relates to the field of electric vehicle air conditioning technology, and in particular to an APTC heater assembly. Background Technology

[0002] Electric vehicles have seen a significant increase in market share this year, making cost reduction a key aspect of industrial development. Electric vehicle heating systems primarily use PTC (Polymer Transmission Controlled Temperature) heaters to heat either the air or the cooling water. Heaters using PTC as a heat source are called APTC (Active Pneumatic Temperature Controlled Temperature) heaters. When a blower pumps fresh air into the PTC heater core through the air intake, the fresh air exchanges heat with the PTC heater core, heating the air. This relatively high-temperature air is then controlled by a valve to enter the vehicle through different air intakes, raising the interior temperature and thus providing heating.

[0003] In the prior art, a common APTC heater assembly mainly includes a core assembly, a wiring harness assembly, and a mounting base. The mounting base is installed on the core assembly with screws, the terminals of the wiring harness assembly are installed on the mounting base, and the circuit board assembly for controlling the heater is installed inside the mounting base.

[0004] However, the mounting base of common APTC heater assemblies has poor sealing performance. External moisture can easily enter the mounting base and condense into condensate, which can cause short circuits in the circuit board assembly and affect the service life of the heater. There is room for improvement. Utility Model Content

[0005] In order to provide a good sealing environment for the circuit board assembly in the APTC heater assembly, this application provides an APTC heater assembly.

[0006] The APTC heater assembly provided in this application adopts the following technical solution:

[0007] An APTC heater assembly includes a core assembly and a mounting base, wherein the mounting base is bolted to the core assembly, and a first sealing gasket is detachably installed between the mounting base and the core assembly.

[0008] The circuit board assembly is bolted and fixed in the mounting base, and a cover is detachably installed on the mounting base. A second sealing gasket is detachably installed between the cover and the mounting base.

[0009] A flexible pad is fixedly installed on the outer shell of the core assembly.

[0010] By adopting the above technical solution, the first sealing gasket, placed between the mounting base and the core assembly, improves the sealing effect of the connection between the mounting base and the core assembly. The second sealing gasket, installed between the mounting base's cover and the mounting base itself, improves the sealing effect of the connection between the mounting base and the cover. The combined use of the first and second sealing gaskets enhances the sealing effect of the mounting base, reducing the possibility of external moisture entering the mounting base through the joints between the mounting base and the core assembly, and between the cover and the mounting base, thus providing a good sealing environment for the circuit board assembly inside the sealing base. The flexible padding layer installed on the core assembly's outer shell provides cushioning protection for the core assembly, reducing deformation caused by external impacts.

[0011] Preferably, the outer shell of the core assembly has a first annular groove on the side near the mounting base that is adapted to the first sealing gasket, and the first sealing gasket is embedded in the first annular groove.

[0012] By adopting the above technical solution, the first annular groove facilitates the positioning of the first sealing gasket during the assembly of the heater assembly.

[0013] Preferably, the top of the mounting base is provided with a second annular groove that is adapted to the second sealing gasket, and the second sealing gasket is embedded in the second annular groove.

[0014] By adopting the above technical solution, the second annular groove facilitates the positioning of the second sealing gasket during the assembly of the heater assembly.

[0015] Preferably, the flexible padding layer includes a first sponge strip, which is glued and fixed to the outer side wall of the core assembly, and the first sponge strip covers the bottom and left and right sides of the core assembly.

[0016] By adopting the above technical solution, the first sponge strip covers the bottom and left and right sides of the core assembly, which can form a buffer protection for the bottom and left and right sides of the core assembly.

[0017] Preferably, the flexible padding layer further includes a second sponge strip, which covers the outer side of the core assembly near the mounting base.

[0018] By adopting the above technical solution, the second sponge strip is wrapped around the outside of the core assembly near the mounting base, which can form a buffer protection for the part of the core assembly near the mounting base.

[0019] Preferably, a thermally conductive insulating cloth is detachably installed inside the mounting base, and the thermally conductive insulating cloth is attached to the bottom of the circuit board.

[0020] By adopting the above technical solution, the thermally conductive insulating cloth can transfer the heat generated during the operation of the circuit board assembly to the mounting base, and exchange heat with the outside world through the mounting base to achieve the heat dissipation effect. Compared with conventional silicone grease, the thermally conductive insulating cloth is easier to replace and for subsequent maintenance of the circuit board assembly.

[0021] Preferably, a low-pressure connector is detachably installed on the side wall of the mounting base, and a through hole is provided through the side wall of the mounting base for the end of the low-pressure connector to extend into, and a third sealing gasket is detachably installed between the low-pressure connector and the outer side wall of the mounting base.

[0022] By adopting the above technical solution, the APTC heater can be easily connected to the low-pressure wiring harness through the low-pressure connector; the third sealing gasket can reduce the occurrence of external moisture entering the mounting base through the joint between the low-pressure connector and the mounting base.

[0023] Preferably, a high-voltage wiring harness assembly is detachably mounted on the side wall of the mounting base, and a connecting base is fixedly connected to the side of the mounting base away from the low-voltage connector. The side walls of the connecting base and the mounting base are provided with through holes for the wiring harness of the high-voltage wiring harness assembly to extend into. The high-voltage wiring harness assembly is detachably mounted on the connecting base.

[0024] In summary, the APTC heater assembly of this application has at least one of the following beneficial technical effects:

[0025] 1. By using the first and second sealing gaskets together, the sealing effect of the mounting base can be improved, reducing the occurrence of external moisture entering the interior of the mounting base from the joint between the mounting base and the core assembly, and the joint between the cover and the mounting base, thus providing a good sealing environment for the circuit board assembly inside the sealing base.

[0026] 2. By using the first and second sponge strips together, the outer shell of the core assembly can be cushioned and protected, reducing the deformation of the core assembly due to external impacts;

[0027] 3. Thermally conductive insulating cloth can transfer the heat generated during the operation of the circuit board assembly to the mounting base, and exchange heat with the outside world through the mounting base to achieve the effect of heat dissipation. Compared with conventional silicone grease, thermally conductive insulating cloth is easier to replace and for subsequent maintenance of the circuit board assembly. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the front structure of the APTC heater assembly in an embodiment of this application.

[0029] Figure 2 This is a schematic diagram illustrating the side structure of the APTC heater assembly in an embodiment of this application.

[0030] Figure 3 This is an exploded schematic diagram illustrating the structural composition of the APTC heater, as shown in the embodiments of this application.

[0031] Figure 4 yes Figure 3 The enlarged schematic diagram at point A-1 is mainly used to show the first annular groove and the first sealing gasket.

[0032] Figure 5 yes Figure 3 The enlarged schematic diagram at point A-2 is mainly used to show the second annular groove and the second sealing gasket.

[0033] Explanation of reference numerals in the attached drawings: 1. Core assembly; 11. First annular groove; 2. Mounting base; 21. Second annular groove; 22. Thermally conductive insulating cloth; 23. Low-voltage connector; 24. Third sealing gasket; 25. High-voltage wiring harness assembly; 26. Connector; 3. First sealing gasket; 4. Circuit board assembly; 5. Cover; 6. Second sealing gasket; 7. First sponge strip; 8. Second sponge strip. Detailed Implementation

[0034] The following combination Figures 1-5 This application will be described in further detail.

[0035] Example

[0036] This application discloses an APTC heater assembly. (Refer to...) Figures 1-3 It mainly includes a core assembly 1 and a mounting base 2. The mounting base 2 is fixedly installed on the core assembly 1 by bolts. A first sealing gasket 3 is detachably installed between the side of the mounting base 2 near the core assembly 1 and the outer shell of the core assembly 1.

[0037] The circuit board assembly 4 is fixedly installed in the mounting base 2 by bolts. A cover 5 is detachably installed on the side of the mounting base 2 away from the core assembly 1 by bolts. The cover 5 seals the outside of the circuit board assembly 4. A second sealing gasket 6 is detachably installed between the cover 5 and the mounting base 2.

[0038] The first sealing gasket 3 seals between the mounting base 2 and the core assembly 1, improving the sealing effect of the connection between the mounting base 2 and the core assembly 1. The second sealing gasket 6, installed between the cover 5 and the mounting base 2, further improves the sealing effect between the mounting base 2 and the cover 5. The combined use of the first and second sealing gaskets 3 and 6 enhances the sealing effect of the mounting base 2, reducing the entry of external moisture into the mounting base 2 through the joints between the mounting base 2 and the core assembly 1, and between the cover 5 and the mounting base 2, thus providing a good sealing environment for the circuit board assembly 4 inside the sealing base.

[0039] Reference Figure 2and Figure 4 In this embodiment, the outer shell of the core assembly 1 has a first annular groove 11 on the side near the mounting base 2, which is adapted to the first sealing gasket 3. The first sealing gasket 3 is embedded in the first annular groove 11, and the first sealing gasket 3 abuts against the inner wall of the first annular groove 11 and the bottom outer wall of the mounting base 2.

[0040] Reference Figure 2 and Figure 5 In this embodiment, the mounting base 2 has a second annular groove 21 on the side away from the core assembly 1, which is adapted to the second sealing gasket 6. The second sealing gasket 6 is embedded in the second annular groove 21 and abuts against the inner wall of the second annular groove 21 and the bottom inner wall of the cover 5.

[0041] To reduce the adverse effects of external impacts on core assembly 1, refer to Figures 1-3 In this embodiment, a flexible pad is fixedly installed on the outer surface of the outer shell of the core assembly 1.

[0042] The flexible padding layer includes a first sponge strip 7 and a second sponge strip 8. The first sponge strip 7 covers the bottom and left and right sides of the core assembly 1, and the second sponge strip 8 covers the periphery of the outer shell of the core assembly 1 near the mounting base 2.

[0043] By using the first sponge strip 7 and the second sponge strip 8 together, the deformation of the core assembly 1 due to external impact can be reduced, and the core assembly 1 can be provided with good cushioning protection.

[0044] It should be noted that in some other embodiments, depending on the actual needs of use, the first sponge strip 7 and the second sponge strip 8 can be replaced with other flexible cushioning materials, such as rubber strips, etc., which will not be limited or elaborated here.

[0045] Reference Figure 3 In this embodiment, a thermally conductive insulating cloth 22 is detachably installed inside the mounting base 2. The thermally conductive insulating cloth 22 includes ears at both ends, and the two ears are fixed to the bottom of the mounting base 2 by bolts. The thermally conductive insulating cloth 22 is located between the mounting base 2 and the circuit board assembly 4, and the two sides of the thermally conductive insulating part are in contact with the inner wall of the mounting base 2 and the bottom of the circuit board assembly 4.

[0046] The thermally conductive insulating cloth 22 can transfer the heat generated during the operation of the circuit board assembly 4 to the mounting base 2, and exchange heat with the outside through the mounting base 2 to achieve the heat dissipation effect. Compared with conventional silicone grease, the thermally conductive insulating cloth 22 is easier to replace and to maintain the circuit board assembly 4.

[0047] A low-voltage connector is detachably installed on the side wall of the mounting base 2. A through hole is provided through the side wall of the mounting base 2 for the end of the low-voltage connector 23 to extend into. A third sealing gasket 24 is detachably installed between the low-voltage connector 23 and the outer side wall of the mounting base 2.

[0048] The low-pressure connector 23 facilitates the connection of the APTC heater to the low-pressure wiring harness; the third sealing gasket reduces the possibility of external moisture entering the mounting base 2 through the joint between the low-pressure connector 23 and the mounting base 2.

[0049] Reference Figure 3 A high-voltage wire harness assembly 25 is detachably mounted on the side wall of the mounting base 2. A connecting base 26 is fixedly connected to the side of the mounting base 2 away from the low-voltage connector 23. The connecting base 26 and the side wall of the mounting base 2 are provided with a through hole for the wire harness of the high-voltage wire harness assembly 25 to extend into. The high-voltage wire harness assembly 25 is detachably mounted on the connecting base 26.

[0050] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An APTC heater assembly, characterized in that, It includes a core assembly (1) and a mounting base (2), wherein the mounting base (2) is bolted to the core assembly (1), and a first sealing gasket (3) is detachably installed between the mounting base (2) and the core assembly (1). The circuit board assembly (4) is bolted and fixed inside the mounting base (2). A cover (5) is detachably installed on the mounting base (2). A second sealing gasket (6) is detachably installed between the cover (5) and the mounting base (2). A flexible pad is fixedly installed on the outer shell of the core assembly (1).

2. The APTC heater assembly according to claim 1, characterized in that, The outer shell of the core assembly (1) has a first annular groove (11) on the side near the mounting base (2) that is adapted to the first sealing gasket (3), and the first sealing gasket (3) is embedded in the first annular groove (11).

3. An APTC heater assembly according to claim 2, characterized in that, The top of the mounting base (2) is provided with a second annular groove (21) that is compatible with the second sealing gasket (6), and the second sealing gasket (6) is embedded in the second annular groove (21).

4. An APTC heater assembly according to claim 3, characterized in that, The flexible padding layer includes a first sponge strip (7), which is glued and fixed to the outer side wall of the core assembly (1), and the first sponge strip (7) covers the bottom and left and right sides of the core assembly (1).

5. An APTC heater assembly according to claim 4, characterized in that, The flexible padding layer also includes a second sponge strip (8), which covers the outer side of the core assembly (1) near the mounting base (2).

6. An APTC heater assembly according to claim 5, characterized in that, A thermally conductive insulating cloth (22) is detachably installed inside the mounting base (2), and the thermally conductive insulating cloth (22) is attached to the bottom of the circuit board.

7. An APTC heater assembly according to claim 6, characterized in that, A low-voltage connector is detachably installed on the side wall of the mounting base (2). A through hole is provided through the side wall of the mounting base (2) for the end of the low-voltage connector (23) to extend into. A third sealing gasket is detachably installed between the low-voltage connector (23) and the outer side wall of the mounting base (2).

8. An APTC heater assembly according to claim 7, characterized in that, A high-voltage wire harness assembly (25) is detachably mounted on the side wall of the mounting base (2). A connecting base (26) is fixedly connected to the side of the mounting base (2) away from the low-voltage connector (23). The connecting base (26) and the side wall of the mounting base (2) are provided with a through hole for the wire harness of the high-voltage wire harness assembly (25) to be inserted. The high-voltage wire harness assembly (25) is detachably mounted on the connecting base (26).

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