CN113291118A

CN113291118A - Multi-zone PTC air heater assembly

Info

Publication number: CN113291118A
Application number: CN202110479391.XA
Authority: CN
Inventors: 万伟伟; 孙雨; 王玮
Original assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Current assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-08-24

Abstract

The invention provides a multi-zone PTC air heater assembly, which comprises a first shell, a second shell, a left side plate, a right side plate and a heating core body, the heating core body comprises a radiator and a plurality of heating rods, the heating core body is fixed in a frame formed by enclosing a first shell, a second shell, a left side plate and a right side plate, the multi-zone PTC air heater assembly further comprises a control box positioned above the heating profile, a first manifold sheet, a second manifold sheet, a third manifold sheet and a fourth manifold sheet, the control box is internally provided with a controller, a bus board and a switching seat, the switching seat is welded on the bus board, an electrode plate at the bottom of the heating rod is electrically connected with an electrode on the switching seat after being partitioned by a first bus piece, a second bus piece and a third bus piece, the electrode plate at the top of the heating rod is electrically connected with the electrode on the switching seat after being partitioned, and the electrode on the switching seat is welded with an IGBT power tube on the controller.

Description

Multi-zone PTC air heater assembly

Technical Field

The invention relates to the field of PTC heaters, in particular to a multi-zone PTC air heater assembly.

Background

The new energy automobile is the development direction of future automobiles all over the world and is also the direction of important support of the policy of China. Because the new energy automobile has no engine, the heating of the whole automobile becomes a problem, and additional heating equipment needs to be added. The electrical heating function of PTC ceramics just meets this requirement.

PTC is a positive temperature coefficient ceramic material, can self-heat in the electrified state, and has the advantages of constant temperature, no open fire, safety, environmental protection and the like. When the new energy automobile air conditioner is used for heating, defrosting and demisting, a plurality of heating modes are required to be provided according to different requirements of the whole automobile, so that a new multi-region type PTC air heater assembly is required to be designed to solve the problems.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a multi-zone PTC air heater assembly which can provide multiple heating modes for different requirements of a finished automobile and at least solves part of problems in the prior art.

The invention is realized by the following steps:

Preferably, the first electrode and the second electrode are injected inside the left side plate, the third electrode and the fourth electrode are injected inside the right side plate, the electrode plate at the bottom of the heating rod comprises three zones of a zone A, a zone B and a zone C which are divided according to the arrangement sequence of the electrode plates, the electrode plate in the zone A is electrically connected with the second electrode through a first bus sheet, the electrode plate in the zone B is electrically connected with the third electrode through a second bus sheet, the electrode plate in the zone C is electrically connected with the fourth electrode through a third bus sheet, the common electrode in the zones A, B and C is electrically connected with the first electrode through a fourth bus sheet, the first electrode, the second electrode, the third electrode and the fourth electrode extend into the control box and are welded on the bus plate, the electrode plate at the top of the heating rod extends into the control box and is welded on the bus plate, and the electrode plate at the top of the heating rod comprises a zone D, a zone B, a zone C and a zone C which are divided according to the arrangement sequence of the electrode plates, The adapter is provided with an A area electrode electrically connected with the second electrode, a B area electrode electrically connected with the third electrode, a C area electrode electrically connected with the fourth electrode, a D area electrode electrically connected with an electrode plate in the area D, an E area electrode electrically connected with an electrode plate in the area E, an F area electrode electrically connected with an electrode plate in the area F, and a common electrode electrically connected with the first electrode, wherein the A area electrode, the B area electrode, the C area electrode, the D area electrode, the E area electrode and the F area electrode on the adapter are welded with IGBT power tubes on the controller in a one-to-one correspondence mode.

Preferably, the heating core comprises nine heating rods.

Preferably, the controller is fixed in the control box through screws.

Preferably, the first housing, the second housing and the control box are connected by screws.

Preferably, the confluence area of the confluence plate is sealed by liquid silicone.

Preferably, the electrode plate confluence area at the bottom of the heating rod is sealed by liquid silica gel.

Preferably, the multi-zone PTC air heater assembly further comprises a low-voltage connector, a high-voltage connector and a grounding wire harness, wherein the low-voltage connector, the high-voltage connector and the grounding wire harness are fixed on the control box through screws, and the low-voltage connector, the high-voltage connector and the grounding wire harness are electrically connected with the controller.

Preferably, the top of control box is equipped with the apron, apron and control box interference fit.

Preferably, the first housing and the second housing are snap-connected by screws.

The invention has the following beneficial effects:

1. the patent relates to a multi-zone control type PTC heater assembly, which is mainly applied to the heating, defrosting and demisting functions of a new energy automobile air conditioner, and meanwhile, a multi-zone design scheme can provide multiple heating modes for different requirements of a finished automobile.

2. The invention provides a multi-zone control type PTC heater assembly, and meanwhile, a multi-zone design scheme can provide various heating modes for different requirements of a finished automobile: when the A + B area is controlled simultaneously, the D + E area is controlled simultaneously, and the F + C area is controlled simultaneously, a three-area heater is formed; when A + B + C are controlled simultaneously and D + E + F are controlled simultaneously, a two-zone heater and the like are formed; according to the product requirement, the invention can form different zone heaters by any combination.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of a multi-zone PTC air heater assembly according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of a heating core provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of a heating core provided by an embodiment of the present invention;

FIG. 4 is a schematic view of a left side plate according to an embodiment of the present invention;

FIG. 5 is a schematic view of a right side plate according to an embodiment of the present invention;

fig. 6 is a schematic view of a bus bar according to an embodiment of the invention;

fig. 7 is a schematic view of an adaptor according to an embodiment of the present invention;

FIG. 8 is an assembly view of a multi-zone PTC wind heater assembly according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 to 8, an embodiment of the invention provides a multi-zone PTC air heater assembly, which includes a first housing 8, a second housing 15, a left side plate 5, a right side plate 13 and a heating core, where the heating core includes a heat sink and a plurality of heating rods, the heating core is fixed in a frame surrounded by the first housing 8, the second housing 15, the left side plate 5 and the right side plate 13, the multi-zone PTC air heater assembly further includes a control box 17 located above the heating body, a first bus bar 9, a second bus bar 11, a third bus bar 12 and a fourth bus bar 7, the control box 17 is internally provided with a controller 6, a bus bar 18 and an adaptor 19, the left side plate 5 is internally injected with a first electrode 14 and a second electrode 22, the right side plate 13 is internally injected with a third electrode 23 and a fourth electrode 24, and electrode pads at the bottom of the heating rods include zones a, a zone, a zone 5, a zone, The electrode plate in the subarea A is electrically connected with a second electrode 22 through a first confluence plate 9, the electrode plate in the subarea B is electrically connected with a third electrode 23 through a second confluence plate 11, the electrode plate in the subarea C is electrically connected with a fourth electrode 24 through a third confluence plate 12, the common electrode in the subarea A, the subarea B and the subarea C is electrically connected with the first electrode 14 through a fourth confluence plate 7, the first electrode 14, the second electrode 22, the third electrode 23 and the fourth electrode 24 extend into the control box and are welded on the confluence plate 18, the electrode plate at the top of the heating rod extends into the control box and is welded on the confluence plate 18, the electrode plate at the top of the heating rod comprises three subareas D, E and F which are divided according to the arrangement sequence of the electrode plates, the adapter 19 is welded on the confluence plate 18, and the A-area electrode 47 electrically connected with the second electrode 22 is arranged on the adapter 19, The B area electrode 48 electrically connected with the third electrode 23, the C area electrode 49 electrically connected with the fourth electrode 24, the D area electrode 51 electrically connected with the electrode plate in the subarea D, the E area electrode 52 electrically connected with the electrode plate in the subarea E, the F area electrode 53 electrically connected with the electrode plate in the subarea F, and the common electrode 54 electrically connected with the first electrode 14, wherein the a area electrode 47, the B area electrode 48, the C area electrode 49, the D area electrode 51, the E area electrode 52, and the F area electrode 53 on the adapter 19 are correspondingly welded with the IGBT power tubes on the controller 6.

The confluence area of the confluence plate 18 is sealed by liquid silicone 2. And the electrode plate confluence area at the bottom of the heating rod is sealed by liquid silica gel 2.

The invention provides a multi-zone control type PTC heater assembly which is mainly applied to the heating, defrosting and demisting functions of a new energy automobile air conditioner, and meanwhile, a multi-zone design scheme can provide various heating modes for different requirements of a finished automobile.

The first shell 8 and the second shell 15 are connected by a screw buckle, a first heating rod 10, a second heating rod 20, a third heating rod 30, a fourth heating rod 40, a fifth heating rod 50, a sixth heating rod 60, a seventh heating rod 70, an eighth heating rod 80 and a ninth heating rod 90 are arranged in the embodiment, as shown in fig. 2, the first heating rod 10 to the ninth heating rod 90 and a plurality of radiators 55 form a heating core, the left side plate 5 and the right side plate 13 are fixed on two sides of the heating core, electrode plates on the upper portion of the heating core penetrate through the control box 17, the heating core is fixed between the first shell 8 and the second shell 15, and the first confluence plate 9 is welded with the electrode plates 101, 201 and 301 of the first heating rod 10, the second heating rod 20 and the third heating rod 30. The second bus bar 11 is welded to the electrode plates 401, 501, 601 of the fourth heating rod 40, the fifth heating rod 50, and the sixth heating rod 60. The third bus bar 12 is welded to the electrode tabs 701, 801, and 901 of the seventh heating rod 70, the eighth heating rod 80, and the ninth heating rod 90. The fourth bus bar 7 is welded to the electrode tabs 102, 202, 302, 402, 502, 602, 702, 802, 902 of the first heating rod 10, the second heating rod 20, the third heating rod 30, the fourth heating rod 40, the fifth heating rod 50, the sixth heating rod 60, the seventh heating rod 70, the eighth heating rod 80, and the ninth heating rod 90. The fourth bus bar 7 is welded with the first electrode 14 on the left side plate 5 to form a common electrode; as shown in fig. 2, the first bus bar 9 is welded with the second electrode 22 on the left side plate 5 to form a partition a electrode; the second bus bar 11 is welded with the third electrode 23 on the right side plate 13 to form a partition B electrode; the third bus bar 12 is welded with the fourth electrode 24 on the right side plate 13 to form a subarea C electrode. And filling and sealing the welding area by adopting liquid silica gel 2.

Electrode plates

103, 203, 303, 403, 503, 603, 703, 803 and 903 of a first heating rod 10, a second heating rod 20, a third heating rod 30, a fourth heating rod 40, a fifth heating rod 50, a sixth heating rod 60, a seventh heating rod 70, an eighth heating rod 80 and a ninth heating rod 90 are welded on 25-34 holes on the bus board 18. As shown in fig. 2,

electrodes

103, 203, 303 form section D, electrodes 403, 503, 603 form section E, and electrodes 703, 803, 903 form section F. The first electrode 14 and the second electrode 22 on the left side plate 5 are welded with the 43 and 44 hole positions on the bus bar 18. The fourth electrode 24 and the third electrode 23 on the right side plate 13 are welded with the holes 45 and 46 on the bus board. The fifth electrode 47 of the electric connection zone A, the sixth electrode 48 of the electric connection zone B, the seventh electrode 49 of the electric connection zone C, the D zone electrode 51 of the electric connection zone D, the E zone electrode 52 of the electric connection zone E and the F zone electrode 53 of the electric connection zone F are arranged on the

adapter

19, 6 electrodes on the adapter 19 are welded with 35-41 hole positions on the bus board 18, and the common electrodes 54 of the rest 1 adapter are welded with 42 hole positions. The welding area is sealed with liquid silicone 2. The controller 6 is fixed in the control box 17 by screws. Six electrodes on the adapter 19 are welded with six IGBT power tubes on the controller 6. The high-voltage connector 3, the low-voltage connector 16 and the grounding wire harness 4 are fixed on a control box 17 through screws. The cover plate 1 is in interference fit with the control box 17.

The invention provides a multi-region PTC air heating assembly which comprises a heating rod, a radiator 55, a left side plate 5, a right side plate 13, a first shell 8, a second shell 15, a switching seat, a first bus piece 9, a second bus piece 11, a third bus piece 12, a fourth bus piece 7, a bus plate 18, a control box 17, a cover plate 1, a controller 6, a high-voltage connector 3, a low-voltage connector 16 and a grounding wire harness 4. The heating rod is divided into stages by adopting electrode plates to form an upper partition and a lower partition. The heating rod and the radiator are assembled together to form a heating core, and the left side plate 5 and the right side plate 13 are fixed on two sides of the heating core. A first confluence sheet 9, a second confluence sheet 11, a third confluence sheet 12 and a fourth confluence sheet 7 are welded on an electrode led out from the lower part of a heating core body, a left side plate and a right side plate are connected with the confluence sheets in a welding mode, a heating rod above the heating core body and the left side plate and the right side plate penetrate into a control box 17, a confluence plate 18 is welded on the electrode led out, and an adapter 19 is welded on the confluence plate 18, so that six zones (a zone A, a zone B, a zone C, a zone D, a zone E and a zone F) of the whole heating core body are realized. The whole heating core body is fixed in the first shell body 8 and the second shell body 15, and the first shell body 8, the second shell body 15 and the control box 17 are connected by screws. The area of the control box 17, which is welded with the bus board 18, is sealed by liquid silica gel 2, the electrodes exposed on the adapter 19 are connected with the controller 6, each electrode corresponds to a group of IGBT power tubes on the controller 6, and the area of the heating core body, which is welded with the bus sheet, is sealed by liquid silica gel 2. The high-voltage connector 3 and the low-voltage connector 16 are fixed to a control box 17 by screws, respectively.

In this embodiment, the left side plate 5 has the first electrode 14 and the second electrode 22 injection molded therein, and the right side plate 13 has the fourth electrode 24 and the third electrode 23 injection molded therein.

A circuit is arranged in the bus board 18, and meanwhile, 20 small holes are formed in the bus board and used for welding a heating rod electrode and a side plate electrode, so that the six regions of the heating core body are formed.

7 electrodes are injected on the adapter 19, and correspond to 6 subarea electrodes and a common electrode of the heating core body.

7 electrodes on the adapter are respectively welded with hole sites on the controller, wherein 6 subarea electrodes correspond to 6 IGBT power tubes, so that the independent control of each area is realized, and a common circuit is welded at 1 hole site.

The invention provides a multi-zone control type PTC heater assembly, and meanwhile, a multi-zone design scheme can provide various heating modes for different requirements of a finished automobile: when the A + B area is controlled simultaneously, the D + E area is controlled simultaneously, and the F + C area is controlled simultaneously, a three-area heater is formed; when A + B + C are controlled simultaneously and D + E + F are controlled simultaneously, a two-zone heater and the like are formed; according to the product requirement, the invention can form different zone heaters by any combination.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A multi-zone PTC air heater assembly characterized by: the multi-region PTC air heater assembly comprises a first shell, a second shell, a left side plate, a right side plate and a heating core body, wherein the heating core body comprises a radiator and a plurality of heating rods, the heating core body is fixed in a frame formed by surrounding the first shell, the second shell, the left side plate and the right side plate, the multi-region PTC air heater assembly further comprises a control box located above a heating body, a first confluence plate, a second confluence plate, a third confluence plate and a fourth confluence plate, a controller, a confluence plate and a switching seat are arranged in the control box, the switching seat is welded on the confluence plate, an electrode plate at the bottom of each heating rod is electrically connected with an electrode on the switching seat after being partitioned through the first confluence plate, the second confluence plate and the third confluence plate, the electrode plate at the top of each heating rod is electrically connected with an electrode on the switching seat after being partitioned, and an electrode on the switching seat is welded with an IGBT power tube on the controller.

2. The multi-zone PTC air heater assembly according to claim 1, wherein: the electrode plates at the top of the heating rod comprise a subarea D, a subarea B, a subarea C, a subarea A, a subarea B, a subarea C, a subarea A, a subarea B and a subarea C, wherein the subarea A, the subarea B and the subarea C are connected with the first electrode through a first bus sheet, the subarea B and the subarea C are connected with the third electrode through a second bus sheet, the subarea A, the subarea B and the subarea C are connected with the first electrode through a fourth bus sheet, the first electrode, the second electrode, the third electrode and the fourth electrode extend into the control box and are welded on the bus plate, the electrode plates at the top of the heating rod extend into the control box and are welded on the bus plate, and the electrode plates at the top of the heating rod comprise a subarea D, a subarea B, a subarea C, a third electrode, a fourth electrode, a third electrode, a third electrode, a fourth electrode, a, The adapter is provided with an A area electrode electrically connected with the second electrode, a B area electrode electrically connected with the third electrode, a C area electrode electrically connected with the fourth electrode, a D area electrode electrically connected with an electrode plate in the area D, an E area electrode electrically connected with an electrode plate in the area E, an F area electrode electrically connected with an electrode plate in the area F, and a common electrode electrically connected with the first electrode, wherein the A area electrode, the B area electrode, the C area electrode, the D area electrode, the E area electrode and the F area electrode on the adapter are welded with IGBT power tubes on the controller in a one-to-one correspondence mode.

3. The multi-zone PTC air heater assembly according to claim 1, wherein: the heating core comprises nine heating rods.

4. The multi-zone PTC air heater assembly according to claim 1, wherein: the controller is fixed in the control box through a screw.

5. The multi-zone PTC air heater assembly according to claim 1, wherein: the first shell, the second shell and the control box are connected through screws.

6. The multi-zone PTC air heater assembly according to claim 2, wherein: and the confluence area of the confluence plate is sealed by liquid silica gel.

7. The multi-zone PTC air heater assembly according to claim 2, wherein: and the electrode plate confluence area at the bottom of the heating rod is sealed by liquid silica gel.

8. The multi-zone PTC air heater assembly according to claim 1, wherein: the low-voltage connector, the high-voltage connector and the grounding wire harness are fixed on the control box through screws, and the low-voltage connector, the high-voltage connector and the grounding wire harness are electrically connected with the controller.

9. The multi-zone PTC air heater assembly according to claim 1, wherein: the top of control box is equipped with the apron, apron and control box interference fit.

10. The multi-zone PTC air heater assembly according to claim 1, wherein: the first shell and the second shell are connected through a screw buckle.