Automotive ceramic ptc electric heater structure

Abstract

The utility model discloses a kind of automobile ceramic PTC electric heater structures, including shell and heating module;The upper end face, lower end face, left end face, right end face of the shell are respectively provided with upper clamping groove, lower clamping part, left clamping groove, right clamping part;The upper clamping groove of the shell and the lower clamping part of adjacent shell can be adapted to splice into multiple rows widened heating module area, the left clamping groove of the shell and the right clamping part of adjacent shell can be adapted to splice into single row lengthened heating module area;Thus, it is set up upper clamping part, lower clamping part, left clamping groove, right clamping groove on shell, multiple rows widened or single row lengthened flexible splicing can be realized, effectively solve the problem that traditional electric heater is difficult to adapt different vehicle heating demand, so, in practical application, according to the specific space layout of vehicle and heating power requirement, multiple electric heater shells are freely combined, greatly improve the versatility and adaptability of product.

Description

Technical Field

[0001] This utility model relates to the field of PTC electric heaters, and in particular to a structure for an automotive ceramic PTC electric heater. Background Technology

[0002] PTC heating element is a new type of constant-temperature heating element. It consists of two metal plates attached to both sides of the PTC heating element and two wires as current-carrying electrodes. It does not require additional temperature control devices and features continuous heating, safety and reliability, stable power, and wide operating voltage.

[0003] In automotive thermal management systems, ceramic PTC electric heaters are key components, mainly used for cabin heating and battery preheating. Their performance and structural design directly affect the comfort and safety of the vehicle.

[0004] Traditional automotive ceramic PTC electric heaters typically employ a single, fixed structure, with each heater unit operating independently. This lack of flexible assembly methods presents significant limitations. When vehicle designs change, such as different models requiring varying heating power and heating area, or when the heating system needs to be upgraded later, traditional electric heaters struggle to adapt quickly. This often necessitates redesigning and manufacturing the entire heating module, leading to increased R&D costs and extended production cycles.

[0005] In addition, traditional electric heaters mainly rely on bolts and clips for connection during installation. These connection methods are not only inefficient to install, but also prone to loosening due to vibration and other factors during vehicle operation, resulting in unstable heating performance and even safety hazards.

[0006] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0007] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a structure for an automotive ceramic PTC electric heater. By setting an upper snap-fit ​​part, a lower snap-fit ​​part, a left snap-fit ​​groove, and a right snap-fit ​​groove on the housing, it can achieve flexible splicing of multiple rows widened or a single row lengthened, effectively solving the problem that traditional electric heaters are difficult to adapt to the heating needs of different vehicle models. Thus, in practical applications, multiple electric heater housings can be freely combined according to the specific spatial layout and heating power requirements of the vehicle, greatly improving the versatility and adaptability of the product.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A ceramic PTC electric heater structure for automobiles includes a housing and a heating module disposed within the housing;

[0010] The upper, lower, left, and right ends of the housing are respectively provided with an upper snap-fit ​​groove, a lower snap-fit ​​part, a left snap-fit ​​groove, and a right snap-fit ​​part; the upper snap-fit ​​groove and the left snap-fit ​​groove have the same size, and the lower snap-fit ​​part and the right snap-fit ​​part have the same size; the upper snap-fit ​​groove of the housing and the lower snap-fit ​​part of the adjacent housing can be adapted to be spliced ​​together to form a multi-row widened heating module area, and the left snap-fit ​​groove of the housing and the right snap-fit ​​part of the adjacent housing can be adapted to be spliced ​​together to form a single-row extended heating module area;

[0011] The upper card slot, lower card slot, left card slot, and right card slot are all provided with magnetic positioning areas on their sides, and magnetic components are embedded in the magnetic positioning areas.

[0012] As a preferred embodiment, the upper snap-fit ​​groove is recessed downward from the upper end face of the housing, the lower snap-fit ​​portion extends downward from the lower end face of the housing, the left snap-fit ​​groove is recessed to the right from the left end face of the housing, and the right snap-fit ​​portion extends outward from the right end face of the housing.

[0013] As a preferred embodiment, the heating module includes a PTC heating element, corrugated aluminum strips, and aluminum strips. Several aluminum strips are arranged parallel to each other along the left and right sides. The PTC heating elements are disposed between adjacent aluminum strips in the middle, and the corrugated aluminum strips are disposed between adjacent aluminum strips on the sides. This allows the PTC heating elements, corrugated aluminum strips, and aluminum strips to form a heating module, fully utilizing the self-limiting temperature characteristics of the PTC heating elements to achieve stable and efficient heating. The corrugated aluminum strips increase the heat dissipation area, and combined with the good thermal conductivity of the aluminum strips, the heat dissipation efficiency is effectively improved.

[0014] As a preferred embodiment, the outer surface of the corrugated aluminum strip is coated with a graphene layer, which utilizes the excellent thermal conductivity of graphene to improve the heat dissipation efficiency of the PTC heating element.

[0015] As a preferred embodiment, thermally conductive silicone is also filled between the adjacent aluminum strips.

[0016] As a preferred embodiment, the PTC heating element is connected to a lead wire, and a clearance hole is provided at the left or right snap-fit ​​slot for the lead wire to pass through. One end of the lead wire passes through the clearance hole and protrudes outside the housing, and the end of the lead wire protruding from the housing is connected to a connector.

[0017] As a preferred embodiment, the housing is made of aluminum profile.

[0018] As a preferred embodiment, the PTC heating element is a ceramic PTC heating element.

[0019] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves flexible splicing of multiple rows of widened or single rows of extended housings by setting an upper snap-fit ​​part, a lower snap-fit ​​part, a left snap-fit ​​groove, and a right snap-fit ​​groove on the housing. This effectively solves the problem that traditional electric heaters are difficult to adapt to the heating needs of different vehicle models. Thus, in practical applications, multiple electric heater housings can be freely combined according to the specific spatial layout and heating power requirements of the vehicle, greatly improving the versatility and adaptability of the product.

[0020] Meanwhile, the design of the upper and lower snap-fit ​​parts, and the left and right snap-fit ​​parts having the same size and being compatible with each other ensures the standardization and convenience of the splicing process and improves production and assembly efficiency.

[0021] In addition, a magnetic positioning area is set on the side of the snap-fit ​​part and a magnetic component is embedded therein. During the splicing process, the magnetic force generated by the magnetic component can quickly attract adjacent shells to achieve initial positioning, which facilitates the snap-fit ​​operation and further improves the installation efficiency. Moreover, the stable adsorption force provided by the magnetic component and the snap-fit ​​structure work together to effectively enhance the overall stability after splicing. Even if the vehicle vibrates while driving in complex road conditions, it can ensure that the shells of each electric heater will not easily loosen, ensuring the reliable operation of the heating system and improving the safety and service life of the product.

[0022] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a top view of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the first splicing state according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the second splicing state according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the third splicing state according to an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached diagram:

[0028] 10. Housing 11. Upper snap-fit ​​slot

[0029] 12. Lower card connector 13. Left card connector slot

[0030] 14. Right card connector 15. Magnetic positioning area

[0031] 16. Magnetic components

[0032] 20. Heating module; 21. PTC heating element

[0033] 22. Corrugated aluminum strip 23. Aluminum strip

[0034] 24. Thermally conductive silicone; 221. Graphene layer. Detailed Implementation

[0035] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0036] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0037] A ceramic PTC electric heater structure for automobiles includes a housing 10 and a heating module 20.

[0038] The heating module 20 is disposed inside the housing 10. Preferably, the housing 10 is made of aluminum profile.

[0039] The upper end face, lower end face, left end face, and right end face of the housing 10 are respectively provided with an upper locking groove 11, a lower locking part 12, a left locking groove 13, and a right locking part 14; preferably, the upper locking groove 11 is recessed downward from the upper end face of the housing 10, the lower locking part 12 is extended downward from the lower end face of the housing 10, the left locking groove 13 is recessed to the right from the left end face of the housing 10, and the right locking part 14 is extended outward from the right end face of the housing 10.

[0040] The upper latching slot 11 and the left latching slot 13 have the same size, and the lower latching part 12 and the right latching part 14 have the same size;

[0041] like Figure 2 As shown, it illustrates a structure consisting of multiple rows of widened heating modules in 20 sections. The upper snap-fit ​​groove 11 of the housing 10 and the lower snap-fit ​​portion 12 of the adjacent housing 10 can be fitted together to form multiple rows of widened heating modules in 20 sections.

[0042] like Figure 3 As shown, it demonstrates the structure of a single-row extended heating module 20-zone, wherein the left snap-fit ​​groove 13 of the housing 10 and the right snap-fit ​​part 14 of the adjacent housing 10 can be adapted and spliced ​​to form a single-row extended heating module 20-zone.

[0043] like Figure 4The diagram shows a multi-row, widened, and lengthened heating module with a 20-zone structure. It has four sets of automotive ceramic PTC electric heater structures. The four adjacent sets of automotive ceramic PTC electric heater structures are connected by an upper snap-fit ​​groove 11, a lower snap-fit ​​part 12, a left snap-fit ​​groove 13, and a right snap-fit ​​part 14 on the housing 10. The corresponding number of automotive ceramic PTC electric heater structures can be assembled according to actual needs to meet the actual heating requirements.

[0044] The upper card slot 11, the lower card slot 12, the left card slot 13, and the right card slot 14 are all provided with magnetic positioning areas 15, and magnetic components 16 are embedded in the magnetic positioning areas 15.

[0045] Preferably, the heating module 20 includes a PTC heating element 21, a corrugated aluminum strip 22, and an aluminum strip 23. Several aluminum strips 23 are arranged parallel to each other along the left and right sides. The PTC heating elements 21 are positioned between adjacent aluminum strips 23 in the middle, and the corrugated aluminum strips 22 are positioned between adjacent aluminum strips 23 on the sides. This allows the PTC heating element 21, corrugated aluminum strip 22, and aluminum strip 23 to form the heating module 20, fully utilizing the self-limiting temperature characteristics of the PTC heating element to achieve stable and efficient heating. The corrugated aluminum strip 22 increases the heat dissipation area, and combined with the good thermal conductivity of the aluminum strip 23, effectively improves heat dissipation efficiency.

[0046] Preferably, the outer surface of the corrugated aluminum strip 22 is coated with a graphene layer 221, utilizing the excellent thermal conductivity of graphene to improve the heat dissipation efficiency of the PTC heating element. Preferably, thermally conductive silicone 24 is also filled between adjacent aluminum strips 23. Preferably, the PTC heating element 21 is connected to a lead wire (not shown in the figure), and a clearance hole (not shown in the figure) is provided at the left or right locking slot 13 for the lead wire to pass through. One end of the lead wire passes through the clearance hole and protrudes outside the housing 10, and the end of the lead wire protruding from the housing 10 is connected to a connector. Preferably, the PTC heating element 21 is a ceramic PTC heating element 21.

[0047] The key design feature of this utility model is that by setting an upper snap-fit ​​part, a lower snap-fit ​​part, a left snap-fit ​​groove, and a right snap-fit ​​groove on the shell, it is possible to achieve flexible splicing of multiple rows of widened or single rows of extended shells. This effectively solves the problem that traditional electric heaters are difficult to adapt to the heating needs of different vehicle models. Thus, in practical applications, multiple electric heater shells can be freely combined according to the specific spatial layout and heating power requirements of the vehicle, which greatly improves the versatility and adaptability of the product.

[0048] Meanwhile, the design of the upper and lower snap-fit ​​parts, and the left and right snap-fit ​​parts having the same size and being compatible with each other ensures the standardization and convenience of the splicing process and improves production and assembly efficiency.

[0049] In addition, a magnetic positioning area is set on the side of the snap-fit ​​part and a magnetic component is embedded therein. During the splicing process, the magnetic force generated by the magnetic component can quickly attract adjacent shells to achieve initial positioning, which facilitates the snap-fit ​​operation and further improves the installation efficiency. Moreover, the stable adsorption force provided by the magnetic component and the snap-fit ​​structure work together to effectively enhance the overall stability after splicing. Even if the vehicle vibrates while driving in complex road conditions, it can ensure that the shells of each electric heater will not easily loosen, ensuring the reliable operation of the heating system and improving the safety and service life of the product.

[0050] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An automotive ceramic PTC electric heater structure, characterized by: It includes a housing and a heating module disposed within the housing; The upper, lower, left, and right ends of the housing are respectively provided with an upper snap-fit ​​groove, a lower snap-fit ​​part, a left snap-fit ​​groove, and a right snap-fit ​​part; the upper snap-fit ​​groove and the left snap-fit ​​groove have the same size, and the lower snap-fit ​​part and the right snap-fit ​​part have the same size; the upper snap-fit ​​groove of the housing and the lower snap-fit ​​part of the adjacent housing can be adapted to be spliced ​​together to form a multi-row widened heating module area, and the left snap-fit ​​groove of the housing and the right snap-fit ​​part of the adjacent housing can be adapted to be spliced ​​together to form a single-row extended heating module area; The upper card slot, lower card slot, left card slot, and right card slot are all provided with magnetic positioning areas on their sides, and magnetic components are embedded in the magnetic positioning areas.

2. The automotive ceramic PTC electric heater structure according to claim 1, characterized by: The upper snap-fit ​​groove is recessed downward from the upper end face of the housing, the lower snap-fit ​​portion extends downward from the lower end face of the housing, the left snap-fit ​​groove is recessed to the right from the left end face of the housing, and the right snap-fit ​​portion extends outward from the right end face of the housing.

3. The automotive ceramic PTC electric heater structure according to claim 1, characterized by: The heating module includes a PTC heating element, a corrugated aluminum strip, and an aluminum strip. Several aluminum strips are arranged parallel to each other on the left and right sides. The PTC heating element is arranged between adjacent aluminum strips in the middle, and the corrugated aluminum strip is arranged between adjacent aluminum strips on the sides, so that the PTC heating element, the corrugated aluminum strip, and the aluminum strip constitute the heating module.

4. The automotive ceramic PTC electric heater structure according to claim 3, characterized by: The outer surface of the corrugated aluminum strip is coated with a graphene layer.

5. The automotive ceramic PTC electric heater structure according to claim 1, characterized in that: Thermally conductive silicone is also filled between the adjacent aluminum strips.

6. The automotive ceramic PTC electric heater structure according to claim 3, characterized by: The PTC heating element is connected to a lead wire. A clearance hole is provided at the left or right locking slot for the lead wire to pass through. One end of the lead wire passes through the clearance hole and protrudes outside the housing. The end of the lead wire protruding from the housing is connected to a connector.

7. The automotive ceramic PTC electric heater structure according to claim 1, characterized by: The housing is made of aluminum profile.

8. The automotive ceramic PTC electric heater structure according to claim 3, characterized by: The PTC heating element is a ceramic PTC heating element.

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