Integrated PTC heater connector device

Abstract

The utility model is suitable for the technical field of PTC heaters, and provides an integrated PTC heater joint device, which comprises a shell, an insulating fixed seat, a duplex elastic contact mechanism, conductive terminals, radiating fins and the like. Through precise matching of the insulation fixing seat and lubrication and heat conduction effects of the graphene modified silicone grease layer, precise installation and stable operation of the PTC heater can be ensured. The reliability of electrical and mechanical connection is enhanced by the pre-pressure of the beryllium copper alloy elastic sheet assembly and the multi-direction clamping force of the V-shaped clamping opening, and the problems of poor contact and short circuit caused by assembly errors or vibration are reduced; the silver layer plating of the conductive terminal and the design of the multi-hole plug interface reduce the contact resistance and improve the electric energy transmission efficiency; the Z-shaped heat conduction path is combined with the phase change heat conduction glue layer and the heat dissipation fins, heat generated when the PTC heater works can be rapidly dissipated, it is ensured that the PTC heater stably operates at the proper temperature, the service life of the device is prolonged, and the energy efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of PTC heater technology, and in particular relates to an integrated PTC heater connector device. Background Technology

[0002] In traditional PTC heater applications, the connector is a crucial component connecting the PTC heater to external circuits, and its installation accuracy and operational stability are paramount. However, existing connectors often lack effective positioning and fixing mechanisms during installation, leading to inaccurate installation of the PTC heater within the connector, which can easily result in displacement or shaking. This installation error not only affects the quality of electrical and mechanical connections between the PTC heater and other components but may also cause safety hazards such as short circuits and abnormal heating due to poor contact, seriously impacting the long-term stable operation of the device.

[0003] Furthermore, during the operation of the PTC heater, due to its own heating and external vibrations, the connecting parts inside the connector device are prone to loosening or wear, which further exacerbates the problem of poor contact. Therefore, how to improve the installation accuracy and operational stability of the PTC heater connector device and reduce poor contact and short circuit problems caused by assembly errors or vibrations has become an urgent technical problem to be solved.

[0004] Secondly, existing connector devices have problems with high contact resistance and high power loss in terms of power transmission. Due to the small contact area and few contact points between the connecting parts, a large resistance is generated when current passes through, which consumes a lot of power and reduces the power transmission efficiency.

[0005] Meanwhile, in terms of heat dissipation, existing connector devices often lack effective heat dissipation structures and materials, which prevents the heat generated by the PTC heater from being dissipated in time, resulting in excessively high internal temperatures of the connector device. This not only affects the working performance and service life of the PTC heater, but may also cause safety accidents due to overheating. Utility Model Content

[0006] This invention provides an integrated PTC heater connector device, which aims to solve the problems of insufficient installation and operation stability, power transmission efficiency and heat dissipation performance of existing PTC heater connector devices.

[0007] This utility model is implemented as follows: an integrated PTC heater connector device includes a housing, an annular thermally conductive silicone layer on the inner wall of the housing, a positioning boss in the middle of the inner cavity, and insertion cavities formed by the two ends of the housing.

[0008] An insulating fixing base is covered with an aluminum nitride ceramic ring on its outer periphery, and the inner end face of the insulating fixing base is provided with a positioning groove that matches the positioning boss.

[0009] The double elastic contact mechanism includes two sets of beryllium copper alloy spring sheet assemblies arranged symmetrically. Each set of spring sheet assemblies is composed of a main spring sheet and a secondary spring sheet stacked together. The surface is laser-clad with a nano-nickel-phosphorus alloy coating. A pre-compression chamber is formed between the two spring sheets. The pre-compression chamber is provided with a corrugated guide groove along the axial direction.

[0010] The conductive terminals are located inside the pre-compression chamber, with both ends extending to the outside of the housing and plated with a silver layer.

[0011] Heat dissipation fins are welded to the ends of conductive terminals. The gaps between the heat dissipation fins are filled with a phase change thermally conductive adhesive layer. The phase change thermally conductive adhesive layer and the thermally conductive silicone layer form a Z-shaped heat conduction path.

[0012] Preferably, the free end of the spring is bent inward to form a V-shaped clamp, and the inner wall of the clamp is provided with anti-slip texture along the circumference.

[0013] Preferably, the bottom of the pre-compression chamber is an arc-shaped curved surface that forms a surface contact with the protrusion of the PTC electrode.

[0014] Preferably, the conductive terminal has a multi-hole connector at one end extending to the outside of the housing, and the multi-hole connector is arranged in a diamond array.

[0015] Preferably, it also includes an NTC temperature sensor, which is embedded in an insulating mounting base by laser.

[0016] Preferably, the diameter tolerance range of the large-diameter end of the positioning boss is ±0.03mm, the interference fit with the positioning slot is 0.05-0.1mm, and the mating surface is coated with a graphene-modified silicone grease layer.

[0017] Preferably, a protective cover is hinged to the multi-hole connector, and an insulating sealing plug matching the multi-hole connector is provided on the protective cover.

[0018] Preferably, the corrugated guide channel has a trapezoidal cross-sectional shape.

[0019] Compared with the prior art, the embodiments of this application have the following main advantages:

[0020] Firstly, through the precise matching of the insulating mounting base and the lubrication and heat conduction of the graphene-modified silicone grease layer, the PTC heater can achieve precise installation and stable operation. The pre-pressure of the beryllium copper alloy spring assembly and the multi-directional clamping force of the V-shaped clamp ensure the reliability of electrical and mechanical connections, reduce poor contact and short circuit problems caused by assembly errors or vibration, and ensure the long-term stable operation of the device.

[0021] Secondly, this device reduces contact resistance and improves power transmission efficiency by using silver plating on conductive terminals and multi-hole connector design. At the same time, the Z-shaped heat conduction path combined with phase change thermal conductive adhesive and heat dissipation fins can quickly dissipate the heat generated by the PTC heater during operation, ensuring stable operation at a suitable temperature, extending the service life of the device and improving energy efficiency.

[0022] Thirdly, the real-time monitoring function of the NTC temperature sensor in this device enables the device to accurately regulate the working status of the PTC heater, ensuring that it works efficiently within a suitable temperature range. The diamond array distribution of the multi-hole connector and the protective cover design not only facilitate the connection of complex circuits, but also provide good protection and sealing functions, simplifying the installation and maintenance process and improving the user experience. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 3 This is a top sectional view of the structure of this utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of this utility model;

[0027] Figure 5 This is a side sectional view of the present invention.

[0028] In the diagram: 1. Housing; 2. Thermally conductive silicone layer; 3. Positioning boss; 4. Insertion cavity; 5. Insulating fixing base; 6. Aluminum nitride ceramic ring; 7. Positioning groove; 8. Spring; 9. Corrugated guide groove; 10. Conductive terminal; 11. Heat dissipation fins; 12. Insulating sealing plug; 13. Multi-hole plug interface; 14. NTC temperature sensor; 15. Protective cover; 16. Phase change thermally conductive adhesive layer. Detailed Implementation

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] This utility model embodiment provides an integrated PTC heater connector device, such as... Figures 1-5 As shown, it includes a housing 1, an annular thermally conductive silicone layer 2 is provided on the inner cavity sidewall of the housing 1, a positioning boss 3 is provided in the middle of its inner cavity, and the two ends of the housing 1 form a plug-in cavity 4.

[0032] An insulating fixing base 5 is covered with an aluminum nitride ceramic ring 6 on its outer periphery, and a positioning groove 7 that matches the positioning boss 3 is provided on the inner end face of the insulating fixing base 5.

[0033] The double elastic contact mechanism includes two sets of beryllium copper alloy spring pieces 8 assemblies arranged symmetrically. Each set of spring pieces 8 assemblies is composed of a main spring piece and a main spring piece stacked together. The surface is laser-coated with a nano nickel-phosphorus alloy coating. A pre-compression chamber is formed between the two spring pieces 8. The pre-compression chamber is provided with a corrugated guide groove 9 along the axial direction.

[0034] The conductive terminal 10 is disposed in the pre-pressure cavity, and its two ends extend to the outside of the housing 1 and are plated with a silver layer.

[0035] Heat dissipation fins 11 are welded to the end of conductive terminals 10. The gaps between heat dissipation fins 11 are filled with phase change thermally conductive adhesive layer 16. The phase change thermally conductive adhesive layer 16 and the thermally conductive silicone layer 2 form a Z-shaped heat conduction path.

[0036] It should be noted that, due to the shortcomings of existing PTC heater connector devices in terms of installation and operational stability, power transmission efficiency, and heat dissipation performance, this solution ensures that the PTC heater can achieve precise installation and stable operation through the precise matching of the insulating fixing base 5 and the lubrication and thermal conduction effect of the graphene modified silicone grease layer; the pre-pressure of the beryllium copper alloy spring clip 8 assembly and the multi-directional clamping force of the V-shaped clamp further enhance the reliability of electrical and mechanical connections, effectively reducing poor contact and short circuit problems caused by assembly errors or vibration, and ensuring the long-term stable operation of the device;

[0037] Meanwhile, the silver plating of the conductive terminal 10 and the design of the multi-hole plug interface 13 significantly reduce the contact resistance and improve the power transmission efficiency; the Z-shaped heat conduction path combined with the phase change thermal conductive adhesive layer 16 and the heat dissipation fins 11 can quickly dissipate the heat generated by the PTC heater when it is working, ensuring that it operates stably at a suitable temperature, extending the service life of the device and improving energy efficiency.

[0038] In addition, the real-time monitoring function of the NTC temperature sensor 14 enables the device to accurately regulate the working status of the PTC heater, ensuring that it works efficiently within a suitable temperature range; the diamond array distribution of the multi-hole connector 13 and the design of the protective cover 15 not only facilitate the connection of complex circuits, but also provide good protection and sealing functions, simplifying the installation and maintenance process.

[0039] Specifically, in this embodiment, the solution mainly includes a housing 1. When the PTC heater is connected to the connector device, the PTC electrode is inserted into the device through the plug interface on the side of the housing 1. The insulating fixing seat 5 achieves stable installation by precisely matching the positioning groove 7 on its inner end face with the positioning boss 3 in the middle of the inner cavity of the housing 1. At the same time, the aluminum nitride ceramic ring 6 covering its outer periphery provides good insulation performance.

[0040] During the insertion of the PTC electrode, the two sets of symmetrically arranged beryllium copper alloy spring pieces 8 generate pre-pressure through their own elasticity, ensuring close contact between the pre-pressure chamber formed by the main spring pieces and the PTC electrode. The nano-nickel-phosphorus alloy coating laser-clad on the surface of the spring pieces 8 not only enhances the wear resistance of the spring pieces 8 but also optimizes their conductivity. The corrugated flow channels 9 arranged axially in the pre-pressure chamber facilitate gas flow, reduce heat accumulation, and further ensure contact stability.

[0041] The conductive terminal 10 is disposed in the pre-pressure chamber, with both ends extending to the outside of the housing 1 and plated with a silver layer, effectively reducing contact resistance and improving conductivity. At the same time, the heat dissipation fins 11 welded to the ends of the conductive terminal 10 form a Z-shaped heat conduction path with the phase change thermally conductive adhesive layer 16 filling the gaps and the annular thermally conductive silicone layer 2 on the inner wall of the housing 1. When the PTC heater is working, part of the heat is conducted to the housing 1 through the thermally conductive silicone layer 2, and the other part is conducted to the conductive terminal 10 through the pre-pressure chamber, and then transferred to the heat dissipation fins 11 by the conductive terminal 10. The phase change thermally conductive adhesive layer 16 undergoes a phase change when the temperature changes, efficiently absorbing and releasing heat. Working together with the thermally conductive silicone layer 2, it quickly dissipates the heat, ensuring that the PTC heater operates stably at a suitable temperature.

[0042] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the free end of the spring 8 is bent inward to form a V-shaped clamp, and the inner wall of the clamp is provided with anti-slip texture along the circumference.

[0043] In this embodiment, the V-shaped clamp, with its unique geometry, can adaptively wrap around the electrode and generate multi-directional clamping force on the electrode; this multi-directional clamping force makes the contact between the spring 8 and the electrode tighter and more stable, effectively preventing the electrode from shaking or loosening in the connector device.

[0044] The anti-slip textured inner wall of the clamp further increases the friction between the spring 8 and the electrode. When the PTC heater vibrates or is impacted by external force during operation, the anti-slip texture can prevent relative sliding between the electrode and the spring 8, thereby ensuring the reliability of the electrical connection, reducing problems such as abnormal heating and power loss caused by poor contact, and ensuring that the PTC heater can work continuously and stably.

[0045] In a further preferred embodiment of this utility model, such as Figures 4-5 As shown, the bottom of the pre-compression chamber is an arc-shaped curved surface that forms a surface contact with the protrusion of the PTC electrode.

[0046] In this embodiment, when the PTC heater electrode is inserted into the connector device, the arc-shaped surface at the bottom of the pre-compression chamber can achieve surface contact with the protrusion of the PTC electrode. Compared with traditional point or line contact, surface contact has a larger contact area, allowing current to pass through the contact surface more evenly, reducing local overheating and improving the efficiency of power transmission. On the other hand, surface contact enhances mechanical stability. The arc-shaped surface fits tightly with the electrode protrusion, maintaining good contact even when subjected to external forces such as vibration and impact during the operation of the PTC heater, making it less prone to poor contact. This ensures the reliability of the electrical connection, guarantees the continuous and stable operation of the PTC heater, and provides users with a stable heating effect.

[0047] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the conductive terminal 10 extends to one end of the outer side of the housing 1 and is provided with a multi-hole plug interface 13, which is distributed in a diamond array.

[0048] In this embodiment, when the connector device is connected to an external device, the external connecting wires can be accurately inserted into the multi-hole socket 13 outside the conductive terminal 10. Since the multi-hole socket 13 is distributed in a diamond array, the position of the socket can be reasonably planned in a limited space, so that the multi-hole socket 13 maintains an appropriate distance, which avoids mutual interference and makes full use of space, making it convenient for multiple connection points to be connected at the same time, thus meeting the needs of complex circuit connections.

[0049] The multi-hole connector 13 design increases the contact area and number of contact points between the conductive terminal 10 and the external connection components. The increased contact area helps to reduce contact resistance, reduce power loss during power transmission, and improve power transmission efficiency. The more contact points enhance the stability and reliability of the connection, effectively preventing poor contact caused by vibration, shaking, and other factors, ensuring that the current can pass through stably and smoothly, providing reliable power support for the PTC heater, and ensuring its normal and efficient operation.

[0050] In a further preferred embodiment of this utility model, such as Figure 4 As shown, it also includes an NTC temperature sensor 14, which is embedded in the insulating mounting base 5 by laser.

[0051] In this embodiment, the NTC temperature sensor (NCP15WF103F03RG) is embedded into the insulating mounting base 5 by laser, achieving tight integration with the insulating mounting base 5. When the PTC heater starts working, the heat it generates is transferred through multiple pathways. On one hand, the heat from the PTC heater is conducted to the conductive terminal 10 via the contact part, and the conductive terminal 10 then transfers the heat to the heat dissipation fins 11 welded to its end. The phase change thermally conductive adhesive layer 16 filling the gaps of the heat dissipation fins 11 and the annular thermally conductive silicone layer 2 on the inner wall of the housing 1 together form a Z-shaped heat conduction path to dissipate the heat.

[0052] On the other hand, since there is a thermal conduction relationship between the insulating mounting base 5 and the PTC heater and related components, the NTC temperature sensor can sense the temperature change of the insulating mounting base 5 in real time, and this temperature change is closely related to the operating temperature of the PTC heater. The NTC temperature sensor 14 converts the detected temperature signal into an electrical signal and outputs it to an external monitoring system to achieve precise control of the operating status of the PTC heater and ensure that it works efficiently within a suitable temperature range.

[0053] In a further preferred embodiment of this utility model, such as Figures 4-5 As shown, the diameter tolerance range of the three major diameter ends of the positioning boss is ±0.03mm, the interference fit with the positioning slot is 0.05-0.1mm, and the mating surface is coated with a graphene-modified silicone grease layer.

[0054] In this embodiment, the graphene-modified silicone grease layer can reduce the frictional resistance between the positioning boss 3 and the positioning slot, thereby reducing the heat and wear generated by friction. At the same time, through precise tolerance control, reasonable interference fit, and the lubrication and thermal conductivity of the graphene-modified silicone grease layer, this positioning structure can ensure that the PTC heater is accurately installed and operates stably in the connector device. Precise installation ensures reliable electrical and mechanical connections between the PTC heater and other components, reducing problems such as poor contact and short circuits caused by assembly errors.

[0055] In a further preferred embodiment of this utility model, such as Figures 1-3 As shown, a protective cover 15 is hinged to the multi-hole connector 13, and an insulating sealing plug 12 matching the multi-hole connector 13 is provided on the protective cover 15.

[0056] In this embodiment, when the multi-hole connector 13 is needed for connection, simply lift the protective cover 15 gently, and the insulating sealing plug 12 will disengage from the connector. At this time, external connecting wires or connecting components can be easily inserted into the connector to achieve electrical connection. After the connection is completed, the protective cover 15 can remain open without hindering normal use. If the connection is temporarily interrupted, the protective cover 15 can also play a certain protective role to reduce the interference of external factors on the connector. When the connection task is completed or the connector needs to be idle for a long time, the protective cover 15 can be closed again, so that the insulating sealing plug 12 can be re-embedded into the connector to restore its protective and sealing functions.

[0057] In a further preferred embodiment of this utility model, such as Figure 4 As shown, the corrugated guide channel 9 has a trapezoidal cross-sectional shape.

[0058] In this embodiment, the upper base of the trapezoidal cross section is relatively narrow and the lower base is relatively wide. This shape is conducive to the formation of an orderly airflow in the guide channel. When the air is heated and expands upward, the narrower upper base can play a certain role in constraining and guiding the airflow, making the airflow more concentrated along the axial direction of the guide channel, reducing the turbulence and flow phenomena of the airflow, thereby reducing the energy loss in the airflow process.

[0059] Working principle: When the PTC heater is connected to the connector device, the PTC electrode is inserted into the device through the insertion interface on the side of the housing 1; the insulating fixing seat 5 achieves a stable installation by precisely matching the positioning groove 7 on its inner end face with the positioning boss 3 in the middle of the inner cavity of the housing 1; at the same time, the aluminum nitride ceramic ring 6 covering its outer periphery provides good insulation performance; the graphene modified silicone grease layer can reduce the frictional resistance between the positioning boss 3 and the positioning slot, reducing the heat and wear generated by friction; through precise tolerance control, reasonable interference fit, and the lubrication and thermal conductivity of the graphene modified silicone grease layer, this positioning structure can ensure that the PTC heater is accurately installed and operates stably in the connector device; precise installation ensures reliable electrical and mechanical connections between the PTC heater and other components, reducing problems such as poor contact and short circuits caused by assembly errors;

[0060] The NTC temperature sensor 14 is laser-embedded into the insulating mounting base 5, achieving tight integration with the insulating mounting base 5. When the PTC heater starts working, the heat it generates is transferred through multiple pathways. On one hand, the heat from the PTC heater is conducted to the conductive terminal 10 via the contact area, and the conductive terminal 10 then transfers the heat to the heat dissipation fins 11 welded to its end. The phase change thermally conductive adhesive layer 16 filling the gaps between the heat dissipation fins 11 and the annular thermally conductive silicone layer 2 on the inner wall of the housing 1 together form a Z-shaped heat conduction path, dissipating the heat. On the other hand, since there is a thermal conduction relationship between the insulating mounting base 5 and the PTC heater and related components, the NTC temperature sensor 14 can sense the temperature change of the insulating mounting base 5 in real time, and this temperature change is closely related to the operating temperature of the PTC heater. The NTC temperature sensor 14 converts the detected temperature signal into an electrical signal and outputs it to an external monitoring system to achieve precise control of the operating status of the PTC heater, ensuring that it works efficiently within a suitable temperature range.

[0061] During the insertion of the PTC electrode, the two sets of symmetrically arranged beryllium copper alloy spring pieces 8 generate pre-pressure through their own elasticity, ensuring close contact between the pre-pressure chamber formed by the main spring pieces and the PTC electrode. The nano-nickel-phosphorus alloy coating laser-clad on the surface of the spring pieces 8 not only enhances the wear resistance of the spring pieces 8 but also optimizes their conductivity. The corrugated flow channels 9 arranged axially in the pre-pressure chamber facilitate gas flow, reduce heat accumulation, and further ensure contact stability.

[0062] The conductive terminal 10 is disposed in the pre-compression chamber, with both ends extending to the outside of the housing 1 and plated with a silver layer, effectively reducing contact resistance and improving conductivity. At the same time, the heat dissipation fins 11 welded to the ends of the conductive terminal 10 form a Z-shaped heat conduction path with the phase change thermally conductive adhesive layer 16 filling the gaps and the annular thermally conductive silicone layer 2 on the inner wall of the housing 1. When the PTC heater is working, part of the heat generated is conducted to the housing 1 through the thermally conductive silicone layer 2, and the other part is conducted to the conductive terminal 10 through the pre-compression chamber, and then transferred to the heat dissipation fins 11 by the conductive terminal 10. The phase change thermally conductive adhesive layer 16 undergoes a phase change when the temperature changes, efficiently absorbing and releasing heat. Working together with the thermally conductive silicone layer 2, it quickly dissipates the heat, ensuring that the PTC heater operates stably at a suitable temperature.

[0063] The V-shaped clamp, with its unique geometry, can adaptively wrap around the electrode, generating multi-directional clamping force. This multi-directional clamping force makes the contact between the spring 8 and the electrode tighter and more stable, effectively preventing the electrode from shaking or loosening within the connector device. The anti-slip texture set along the circumferential direction on the inner wall of the clamp further increases the friction between the spring 8 and the electrode. When the PTC heater vibrates or is impacted by external forces during operation, the anti-slip texture can prevent relative sliding between the electrode and the spring 8, thereby ensuring the reliability of the electrical connection, reducing problems such as abnormal heating and power loss caused by poor contact, and ensuring that the PTC heater can work continuously and stably.

[0064] When the PTC heater electrode is inserted into the connector device, the arc-shaped surface at the bottom of the pre-compression chamber can make surface contact with the protrusion of the PTC electrode. Compared with traditional point or line contact, surface contact has a larger contact area, allowing current to pass through the contact surface more evenly, reducing local overheating and improving the efficiency of power transmission. On the other hand, surface contact enhances mechanical stability. The arc-shaped surface fits tightly with the electrode protrusion, maintaining good contact even when subjected to external forces such as vibration and impact during the operation of the PTC heater, making it less prone to poor contact. This ensures the reliability of the electrical connection, guarantees the continuous and stable operation of the PTC heater, and provides users with a stable heating effect.

[0065] When the connector is connected to an external device, the external connecting wires can be precisely inserted into the multi-hole socket 13 outside the conductive terminal 10. Because the multi-hole socket 13 is arranged in a diamond array, the position of the sockets can be rationally planned within a limited space, maintaining appropriate spacing between multiple sockets. This avoids mutual interference, makes full use of space, and facilitates simultaneous access of multiple connection points, meeting the needs of complex circuit connections. The design of the multi-hole socket 13 increases the contact area and the number of contact points between the conductive terminal 10 and the external connecting components. Increased contact area helps reduce contact resistance, decreases energy loss during power transmission, and improves energy transmission efficiency. More contact points enhance the stability and reliability of the connection, effectively preventing poor contact caused by vibration, shaking, etc., ensuring stable and smooth current flow, providing reliable power support for the PTC heater, and guaranteeing its normal and efficient operation.

[0066] When the multi-hole connector 13 is needed for connection, simply lift the protective cover 15 gently, and the insulating sealing plug 12 will disengage from the connector. At this time, the external connecting wire can be easily inserted into the connector to achieve electrical connection. After the connection is completed, the protective cover 15 can remain open without hindering normal use. If the connection is temporarily interrupted, the protective cover 15 can also play a certain protective role and reduce the interference of external factors on the connector. When the connection task is completed or the connector needs to be idle for a long time, the protective cover 15 can be closed again to allow the insulating sealing plug 12 to be re-inserted into the connector and restore its protective and sealing functions.

[0067] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0068] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0069] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0070] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. An integrated PTC heater connector device, characterized in that, include: The housing has an annular thermally conductive silicone layer on the inner wall of the housing cavity, a positioning boss in the middle of the inner cavity, and insertion cavities formed by the two ends of the housing. An insulating fixing base is covered with an aluminum nitride ceramic ring on its outer periphery, and the inner end face of the insulating fixing base is provided with a positioning groove that matches the positioning boss. The double elastic contact mechanism includes two sets of beryllium copper alloy spring sheet assemblies arranged symmetrically. Each set of spring sheet assemblies is composed of a main spring sheet and a secondary spring sheet stacked together. The surface is laser-clad with a nano-nickel-phosphorus alloy coating. A pre-compression chamber is formed between the two spring sheets. The pre-compression chamber is provided with a corrugated guide groove along the axial direction. The conductive terminals are located inside the pre-compression chamber, with both ends extending to the outside of the housing and plated with a silver layer. Heat dissipation fins are welded to the ends of conductive terminals. The gaps between the heat dissipation fins are filled with a phase change thermally conductive adhesive layer. The phase change thermally conductive adhesive layer and the thermally conductive silicone layer form a Z-shaped heat conduction path.

2. The integrated PTC heater connector device as described in claim 1, characterized in that, The free end of the spring is bent inward to form a V-shaped clamp, and the inner wall of the clamp is provided with anti-slip texture along the circumference.

3. The integrated PTC heater connector device as described in claim 1, characterized in that, The bottom of the pre-compression chamber is an arc-shaped curved surface that forms a surface contact with the protrusion of the PTC electrode.

4. The integrated PTC heater connector device as described in claim 1, characterized in that, The conductive terminal extends to one end of the outer side of the housing and is provided with a multi-hole plug interface, which is distributed in a diamond array.

5. The integrated PTC heater connector device as described in claim 1, characterized in that, It also includes an NTC temperature sensor, which is embedded in an insulating mounting base via laser.

6. The integrated PTC heater connector device as described in claim 1, characterized in that, The diameter tolerance of the large-diameter end of the positioning boss is ±0.03mm, the interference fit with the positioning slot is 0.05-0.1mm, and the mating surface is coated with a graphene-modified silicone grease layer.

7. The integrated PTC heater connector device as described in claim 4, characterized in that, The multi-hole connector is hinged with a protective cover, and the protective cover is equipped with an insulating sealing plug that matches the multi-hole connector.

8. The integrated PTC heater connector device as described in claim 1, characterized in that, The corrugated guide channel has a trapezoidal cross-sectional shape.

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