Anti-burn thick film heater module and integrated module electric compressor

Abstract

The utility model provides a kind of anti-burn thick film heater module and integrated module electric compressor, the anti-burn thick film heater module provided includes: first shell, one side of the first shell is inwardly recessed to form recess;Second shell, the second shell is embedded in the recess, the side of the second shell away from the recess is formed with heat exchange cavity to flow through heat conduction medium;Heating plate, the heating plate is located in the side of the first shell away from its recess, the heating plate is formed by the alumina ceramic base layer, conductor layer, resistance layer and protective layer in turn close to the first shell Laminated.The anti-burn thick film heater module provided by the utility model is applied to integrated module electric compressor, and its safety performance is higher, service life is longer, and the stable operation of integrated module electric compressor can be effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, and in particular relates to an anti-overheating thick film heater module and an integrated module electric compressor. Background Technology

[0002] Currently, under strong national policies, the popularization of electric vehicles is an inevitable trend. However, in the process of developing electric vehicles, more and more problems are becoming increasingly prominent. For example, in conventional air conditioning systems, the heater and compressor are separate structures, requiring two sets of high-voltage terminals for power supply, which is costly. Those skilled in the art are constantly trying to improve this. For instance, patent application number CN202410603030.5 discloses an integrated modular electric compressor with an integrated heating module, which integrates the heater and compressor. To reduce costs, the heater integrated into the compressor is generally a thick-film heater with stainless steel as the substrate. However, this type of heater has the following drawbacks: the expansion coefficients of stainless steel and die-cast aluminum differ greatly, resulting in significantly different degrees of deformation during heating, which can easily lead to irreversible deformation and shorten its service life. To prevent leakage, multiple layers of insulation need to be plated on the stainless steel substrate, which increases costs. Furthermore, the insulation layer is at risk of burning through during prolonged heating or overheating. Utility Model Content

[0003] In view of the problems existing in the prior art, the main purpose of this utility model is to provide an anti-overheating thick film heater module and an integrated module electric compressor. When the provided anti-overheating thick film heater module is applied to the integrated module electric compressor, its safety performance is higher and its service life is longer, which can effectively ensure the stable operation of the integrated module electric compressor.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model provides a thick film heater module to prevent overheating, the thick film heater module to prevent overheating includes:

[0006] A first housing, one side of which is recessed inward to form a groove;

[0007] The second housing is embedded in the groove, and a heat exchange cavity is formed on the side of the second housing opposite to the groove to allow the flow of heat transfer medium.

[0008] A heating plate is disposed on the side of the first housing opposite to its recess, and the heating plate is composed of an alumina ceramic base layer, a conductor layer, a resistive layer and a protective layer stacked sequentially close to the first housing.

[0009] As a further description of the above technical solution, the heating plate includes a first plate and a second plate, both of which are arranged perpendicular to the thickness of the heating plate.

[0010] A predetermined gap is formed between the first plate and the second plate.

[0011] As a further description of the above technical solution, the heating plate has a mounting portion on its circumferential outer edge, which is used to connect with the first housing.

[0012] As a further description of the above technical solution, the mounting part is provided with a plurality of first mounting holes, and the first housing is provided with a plurality of second mounting holes corresponding one-to-one with the first mounting holes. The first mounting holes and the second mounting holes are connected by fasteners and / or adhesives.

[0013] As a further description of the above technical solution, the first housing is made of die-cast aluminum.

[0014] As a further description of the above technical solution, the heat exchange cavity includes a first cavity wall and a second cavity wall opposite to each other; wherein,

[0015] The first cavity wall extends inwardly with at least one first partition, and the surface of the first partition facing the second cavity wall is separate from the second cavity wall;

[0016] The second cavity wall extends inwardly with at least one second partition, and the surface of the second partition facing the first cavity wall is separate from the first cavity wall;

[0017] The total length of the first partition and the second partition in their extending direction is greater than the distance between the first cavity wall and the second cavity wall.

[0018] As a further description of the above technical solution, the first partition and the second partition are arranged at equal intervals.

[0019] As a further description of the above technical solution, both the first partition and the second partition have a plate surface that abuts against the cavity wall of the heat exchange chamber, facing away from and away from the bottom wall of the groove, thereby forming a tortuous heat exchange channel in the heat exchange chamber.

[0020] The first housing is provided with a liquid inlet and a liquid outlet, which are respectively connected to the two ends of the heat exchange channel.

[0021] As a further description of the above technical solution, the heat exchange cavity is also provided with multiple heat exchange columns.

[0022] This utility model also provides an integrated modular electric compressor, including the overheat protection thick film heater module and the controller as described above, wherein the overheat protection thick film heater module is electrically connected to the controller.

[0023] Based on the above technical solutions, the outstanding effects of this utility model are as follows:

[0024] 1. In the anti-overheating thick film heater module provided by this utility model, the conventional stainless steel base layer in the heating plate is replaced with an alumina ceramic base layer. Due to its own properties, it has insulation capabilities, so there is no need to plate an insulation layer on the base layer (generally, 4 insulation layers need to be plated). At the same time, even if the heater module overheats under extreme conditions, it can still ensure its insulation performance, which significantly reduces the risk of leakage.

[0025] 2. In the anti-overheating thick film heater module provided by this utility model, the heating plate includes a first plate and a second plate, and both plates are arranged perpendicular to the thickness of the heating plate. Compared with a whole heating plate, it is easier to process, and a preset gap is formed between the two plates, which allows the deformation of the plate itself to tend to the space during the heating process, thereby effectively reducing the damage rate of the heating plate caused by thermal deformation during the heating process.

[0026] 3. In the anti-overheating thick film heater module provided by this utility model, the first shell is made of die-cast aluminum. The expansion coefficients of alumina and die-cast aluminum are close, and the thermal stress effect is low. This can effectively reduce the probability of magnetic deformation, cracking and mechanical property deterioration between the first shell and the alumina ceramic base, and significantly improve the stability of the operation of the anti-overheating thick film heater module.

[0027] 4. In the anti-overheating thick film heater module provided by this utility model, a meandering heat exchange channel is formed in the heat exchange cavity by setting a first partition and a second partition, and heat exchange columns are arranged at the same time, which effectively improves the heat exchange efficiency and also turbulents the heat exchange medium, making the heat exchange more uniform. Attached Figure Description

[0028] Figure 1 This is an exploded view of the anti-overheating thick film heater module in an embodiment of this utility model;

[0029] Figure 2 This is an exploded view of the heating plate in an embodiment of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the anti-overheating thick film heater module in an embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the anti-overheating thick film heater module installed on the integrated module electric compressor in an embodiment of this utility model.

[0032] Explanation of icon numbers:

[0033] 1. First housing; 2. Second housing; 3. Heat exchange chamber; 4. Heating plate; 5. Alumina ceramic base layer; 6. Conductor layer; 7. Resistance layer; 8. Protective layer; 9. First plate; 10. Second plate; 11. Mounting part; 12. First mounting hole; 13. Second mounting hole; 14. First partition; 15. Second partition; 16. Liquid inlet; 17. Liquid outlet; 18. Heat exchange column; 19. Integrated module electric compressor. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper," "middle," "lower," "inner," "outer," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0036] Please see Figures 1 to 4 This utility model discloses an anti-overheating thick film heater module, which includes:

[0037] A first housing 1, one side of the first housing 1 is recessed inward to form a groove;

[0038] The second housing 2 is embedded in the groove, and a heat exchange cavity 3 is formed on the side of the second housing 2 away from the groove to allow the flow of heat-conducting medium.

[0039] Heating plate 4 is disposed on the side of the first housing 1 away from its groove. The heating plate 4 is composed of an alumina ceramic base layer 5, a conductor layer 6, a resistive layer 7 and a protective layer 8 stacked in sequence close to the first housing 1.

[0040] With the above structure, in the overheat-resistant thick film heater module, one side of the first housing 1 is recessed inward to form a groove for embedding the second housing 2. The side of the second housing 2 opposite to the groove has a heat exchange cavity 3 for the flow of the heat transfer medium. The heating plate 4 is disposed on the side of the first housing 1 opposite to its groove and is used to heat the heat transfer medium. The heating plate 4 is composed of an alumina ceramic base layer 5, a conductor layer 6, a resistive layer 7, and a protective layer 8 stacked sequentially close to the first housing 1. Compared with the stainless steel base layer used in the prior art, this embodiment uses an alumina ceramic base layer 5, which has insulation capabilities due to its inherent properties, eliminating the need to plate an insulating layer on the base layer (generally, four insulating layers are required). At the same time, even if the heater module overheats under extreme conditions, it can still maintain its insulation performance, significantly reducing the risk of leakage.

[0041] Please refer to the figure. Specifically, in this embodiment, the heating plate 4 includes a first plate body 9 and a second plate body 10. The first plate body 9 and the second plate body 10 are both arranged perpendicular to the thickness of the heating plate 4. Compared with a whole heating plate 4, it is easier to process. Moreover, a preset gap is formed between the first plate body 9 and the second plate body 10, which allows the deformation of the plate body during the heating process to tend to be in space, thereby effectively reducing the damage rate of the heating plate 4 caused by thermal deformation during the heating process.

[0042] Specifically, in this embodiment, the heating plate 4 has a mounting portion 11 on its circumferential outer edge. The mounting portion 11 is used to connect with the first housing 1. More specifically, the mounting portion 11 is made of insulating material. The mounting portion 11 has a plurality of first mounting holes 12, and the first housing 1 has a plurality of second mounting holes 13 corresponding one-to-one with the first mounting holes 12. The first mounting holes 12 and the second mounting holes 13 are connected by fasteners (e.g., bolts) and adhesives (e.g., thermally conductive adhesive), thereby connecting the heating plate 4 with the first housing 1 to achieve better fixation and higher heat exchange efficiency. Of course, in other embodiments, the first mounting holes 12 and the second mounting holes 13 can also be connected by fasteners (e.g., bolts) or adhesives (e.g., thermally conductive adhesive) alone.

[0043] Specifically, in this embodiment, the first housing 1 is made of die-cast aluminum because the expansion coefficients of alumina and die-cast aluminum are close and the thermal stress effect is low. This can effectively reduce the probability of magnetic deformation, cracking and mechanical property deterioration between the first housing 1 and the alumina ceramic base layer 5, and significantly improve the stability of the operation of the anti-overheating thick film heater module.

[0044] Specifically, in this embodiment, the heat exchange cavity 3 is generally rectangular in shape, including a first cavity wall and a second cavity wall opposite to each other; wherein, the first cavity wall extends inward with two first partitions 14, and the surface of the first partitions 14 facing the second cavity wall is separate from the second cavity wall; the second cavity wall extends inward with a second partition 15, and the surface of the second partition 15 facing the first cavity wall is separate from the first cavity wall; the total length of the first partitions 14 and the second partitions 15 in their extending directions is greater than the distance between the first cavity wall and the second cavity wall, thereby turbulenting the heat exchange medium flowing in the heat exchange cavity 3, resulting in more complete heat exchange. The first partition 14 and the second partition 15 are arranged at equal intervals. Both the first partition 14 and the second partition 15 have a plate surface that faces and is opposite to the bottom wall of the groove and abuts against the cavity wall of the heat exchange cavity 3. Thus, a tortuous heat exchange channel is formed in the heat exchange cavity 3 so that the heat exchange medium can flow in a meandering manner in the heat exchange cavity 3 and achieve uniform heat exchange. The first shell 1 is provided with a liquid inlet 16 and a liquid outlet 17, which are respectively connected to the two ends of the heat exchange channel.

[0045] Specifically, in this embodiment, the heat exchange cavity 3 is also provided with a plurality of heat exchange columns 18, which can transfer the heat absorbed by the second shell 2 to the heat exchange cavity 3 more quickly, and can also turbulent the heat exchange medium to effectively improve the uniformity of heating the heat exchange medium.

[0046] Specifically, this embodiment also discloses an integrated modular electric compressor 19, including the anti-overheating thick film heater module and controller (not shown in the figure) as described above. The anti-overheating thick film heater module is integrated on the compressor body of the integrated modular electric compressor 19 and is electrically connected to the controller.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any changes, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thick-film heater module with anti-overheating properties, characterized in that, include: A first housing, one side of which is recessed inward to form a groove; The second housing is embedded in the groove, and a heat exchange cavity is formed on the side of the second housing opposite to the groove to allow the flow of heat transfer medium. A heating plate is disposed on the side of the first housing opposite to its recess, and the heating plate is composed of an alumina ceramic base layer, a conductor layer, a resistive layer and a protective layer stacked sequentially close to the first housing.

2. The anti-overheating thick film heater module according to claim 1, characterized in that, The heating plate includes a first plate and a second plate, both of which are arranged perpendicular to the thickness of the heating plate. A predetermined gap is formed between the first plate and the second plate.

3. The anti-overheating thick film heater module according to claim 1, characterized in that, The heating plate has a mounting part on its circumferential outer edge, which is used to connect with the first housing.

4. The anti-overheating thick film heater module according to claim 3, characterized in that, The mounting part is provided with a plurality of first mounting holes, and the first housing is provided with a plurality of second mounting holes corresponding one-to-one with the first mounting holes. The first mounting holes and the second mounting holes are connected by fasteners and / or adhesives.

5. The anti-overheating thick film heater module according to claim 1, characterized in that, The first housing is made of die-cast aluminum.

6. The anti-overheating thick film heater module according to claim 1, characterized in that, The heat exchange cavity includes opposing first and second cavity walls; wherein... The first cavity wall extends inwardly with at least one first partition, and the surface of the first partition facing the second cavity wall is separate from the second cavity wall; The second cavity wall extends inwardly with at least one second partition, and the surface of the second partition facing the first cavity wall is separate from the first cavity wall; The total length of the first partition and the second partition in their extending direction is greater than the distance between the first cavity wall and the second cavity wall.

7. The anti-overheating thick film heater module according to claim 6, characterized in that, The first partition and the second partition are arranged at equal intervals.

8. The anti-overheating thick film heater module according to claim 7, characterized in that, The first and second partitions each have a plate surface that abuts against the heat exchange cavity wall, facing away from and away from the bottom wall of the groove, thereby forming a tortuous heat exchange channel inside the heat exchange cavity. The first housing is provided with a liquid inlet and a liquid outlet, which are respectively connected to the two ends of the heat exchange channel.

9. The anti-overheating thick film heater module according to claim 8, characterized in that, The heat exchange cavity is also equipped with multiple heat exchange columns.

10. An integrated modular electric compressor, characterized in that, It includes the anti-overheating thick film heater module and controller as described in any one of claims 1-9, wherein the anti-overheating thick film heater module is electrically connected to the controller.

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