Heating device

Abstract

The utility model relates to a heating device, including shell, cover body, heating core body and wire harness, the shell is provided with the installation groove that is used for the installation of heating core body, and the inside of shell is provided with the accommodation cavity and the potting cavity, the potting cavity and the accommodation cavity are communicated through the communication port, the cover body covers the notch of the installation groove, and the wiring harness is arranged in the installation groove. The heating core comprises a body and a connecting interface used for being electrically connected with the wire harness, the body is arranged in the containing cavity, the wire harness is arranged in the glue pouring cavity, the connecting interface extends into the glue pouring cavity from the communicating opening, and the glue pouring cavity is filled with sealant. The heating device provided by the utility model solves the problems that a traditional heating device is relatively high in glue filling cost and the glue filling quality cannot be monitored.

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a heating device. Background Art

[0002] In recent years, new energy vehicles have developed rapidly. With the establishment of a high-voltage battery platform, the waterproof and safety requirements for PTC heaters have become increasingly stringent. Sealant is usually poured into the shell of the PTC heater to meet the waterproof and insulation requirements. However, existing PTC heaters generally choose to directly pour sealant into the opening connected to the power harness. However, on the one hand, the entire shell is filled with sealant, which is costly, and on the other hand, the operator cannot monitor and ensure the quality of the filling. Utility Model Content

[0003] The main purpose of the utility model is to provide a heating device, aiming to provide a device which can reduce the glue pouring cost and ensure the glue pouring quality.

[0004] To achieve the above-mentioned purpose, the utility model proposes a heating device, including a shell, a cover body, a heating core and a wiring harness, the shell is provided with an installation groove for installing the heating core, and the shell is provided with a accommodating chamber and a glue pouring chamber, the glue pouring chamber and the accommodating chamber are connected through a connecting port, the cover body covers the slot of the installation groove, the heating core includes a main body and a connecting interface for electrically connecting with the wiring harness, the main body is arranged in the accommodating chamber, the wiring harness is arranged in the glue pouring chamber, the connecting interface extends from the connecting port into the glue pouring chamber, and the glue pouring chamber is filled with sealant.

[0005] According to some embodiments of the utility model, a mounting port is provided at one end of the heating device, and the mounting port is communicated with the glue pouring chamber. The heating device also includes a connecting portion, and the connecting portion includes a main body section and a connecting section. The shell or the cover body and the main body section are connected to the mounting port through the connecting section. The connecting portion has a wire hole for a wiring harness to pass through, and the wire hole is communicated with the glue pouring chamber.

[0006] According to some embodiments of the utility model, two limiting segments are protruded and spaced apart in the axial direction on the circumferential side of the main body segment, and the connecting segment is provided between the two limiting segments.

[0007] According to some embodiments of the present invention, the diameter of the connecting section is greater than the diameter of the mounting opening; and / or,

[0008] The distance between the two limiting sections is smaller than the thickness of the installation opening; and / or,

[0009] The inner diameter of the wire hole is smaller than the diameter of the wire harness.

[0010] According to some embodiments of the utility model, the connecting portion also includes a guide segment for guiding the direction of the wiring harness, wherein the guide segment is disposed at one end of the main body segment away from the installation port, the guide segment extends in a direction away from the installation port, and is bent toward the circumferential side of the main body segment.

[0011] According to some embodiments of the utility model, the shell and the cover are respectively provided with connecting grooves, the two connecting grooves are arranged opposite to each other in the thickness direction of the shell, the connecting section is arranged between the two connecting grooves, and the two connecting grooves are matched and installed to form the installation port.

[0012] According to some embodiments of the present invention, a detection unit for monitoring the temperature of the heating core is further included, and the detection unit is arranged on one side of the heating core.

[0013] According to some embodiments of the present utility model, the detection part is provided on both sides of the heating core, and the two detection parts are connected in series.

[0014] According to some embodiments of the utility model, a sealing portion is provided around the glue pouring cavity, and the distance from the free end of the sealing portion to the bottom of the mounting groove is greater than the thickness of the heating core.

[0015] According to some embodiments of the present invention, a buckling structure is further included, wherein the buckling structure includes a buckling portion and a matching portion, the buckling portion and the matching portion are detachably connected, and the shell and the cover are connected to the matching portion via the buckling portion.

[0016] The utility model has at least the following beneficial effects:

[0017] In the utility model, an installation groove for installing the heating core is opened on the shell, and a accommodating cavity and a glue pouring cavity are arranged in the shell, the heating core includes a main body and a connecting interface for electrically connecting with the wiring harness, the main body is arranged in the accommodating cavity, and the connecting interface and the wiring harness are both arranged in the glue pouring cavity. Since the heating core is electrically connected with the wiring harness through the connecting interface, only the sealant is filled in the glue pouring cavity to play the role of sealing and insulation, which can meet the waterproof and safety requirements of the entire heating device. At the same time, the operator can pour the sealant into the glue pouring cavity after the wiring harness and the connecting interface are electrically connected, and then after completing the glue pouring operation, the glue pouring quality is inspected. If the glue pouring quality is poor, the glue filling operation can be performed immediately until the glue pouring quality meets the requirements, and then the cover body is closed to complete the assembly of the heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a heating device provided in an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A three-dimensional schematic diagram of the heating device;

[0021] Figure 3 for Figure 1 A partial enlarged view of middle A;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the middle connection part.

[0023] Description of reference numerals:

[0024] 100-heating device; 1-shell; 11-installation slot; 12-accommodation cavity; 13-glue filling cavity; 14-installation port; 141-connection slot; 2-cover; 3-heating core; 31-main body; 32-connection interface; 4-connection part; 41-main section; 411-limiting section; 42-connection section; 43-guide section; 5-detection part; 6-sealing part; 7-buckle structure; 71-buckle part; 72-matching part; 8-wiring harness. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] The utility model provides a heating device. Figures 1 to 4 A specific embodiment of a heating device provided by the utility model.

[0029] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a heating device 100, including a shell 1, a cover body 2, a heating core 3 and a wiring harness 8, the shell 1 is provided with an installation groove 11 for installing the heating core 3, and the shell 1 is provided with a accommodating cavity 12 and a glue pouring cavity 13, the glue pouring cavity 13 and the accommodating cavity 12 are connected through a connecting port, the cover body 2 covers the notch of the installation groove 11, the heating core 3 includes a main body 31 and a connection interface 32 for electrically connecting with the wiring harness 8, the main body 31 is arranged in the accommodating cavity 12, the connection interface 32 and the wiring harness 8 are both arranged in the glue pouring cavity 13, and the glue pouring cavity 13 is filled with sealant.

[0030] In the utility model, the shell 1 is provided with an installation groove 11 for installing the heating core 3, and the shell 1 is provided with a accommodating cavity 12 and a glue pouring cavity 13, the heating core 3 includes a main body 31 and a connecting interface 32 for electrically connecting with the wiring harness 8, the main body 31 is arranged in the accommodating cavity 12, the connecting interface 32 and the wiring harness 8 are both arranged in the glue pouring cavity 13, because the heating core 3 is electrically connected with the wiring harness 8 through the connecting interface 32, only the sealant is filled in the glue pouring cavity 13 to play the role of sealing and insulation, which can meet the waterproof and safety requirements of the entire heating device 100, and at the same time, the operator can pour the sealant into the glue pouring cavity 13 after the wiring harness 8 and the connecting interface 32 are electrically connected, and then after completing the glue pouring operation, the glue pouring quality is detected, if the glue pouring quality is poor, the glue filling operation can be immediately performed until the glue pouring quality meets the requirements, and then the cover body 2 is covered to complete the assembly of the heating device 100.

[0031] It should be noted that one end of the wiring harness 8 is connected to the power generation equipment, and the other end is electrically connected to the connection interface 32 of the heating core 3, so as to transmit the current at the power generation equipment to the heating core 3. The heating core 3 converts electrical energy into thermal energy and generates heat after being energized.

[0032] Since the wiring harness 8 needs to extend into the heating device 100 and be electrically connected to the connection interface 32, the wiring harness 8 and the heating device 100 are generally connected by clamping the mounting port 14 on the heating device 100 with the corrugated tube of the wiring harness 8. However, this connection method requires that the mounting port 14 and the corrugated tube match in size, which has a small scope of application and a high requirement for injection molding at the mounting port 14. Therefore, in some embodiments, such as Figure 2 and Figure 3 As shown, one end of the heating device 100 is provided with a mounting port 14, and the mounting port 14 is communicated with the glue pouring chamber 13. The heating device 100 also includes a connecting portion 4, and the connecting portion 4 includes a main section 41 and a connecting section 42. The shell 1 or the cover body 2 and the main section 41 are connected to the mounting port 14 through the connecting section 42. The connecting portion 4 has a wire hole for the wiring harness 8 to pass through, and the wire hole is communicated with the glue pouring chamber 13. In this way, a mounting port 14 is opened at one end of the heating device 100, and the mounting port 14 is connected to the glue pouring cavity 13. The connecting portion 4 includes a main section 41 and a connecting section 42. The shell 1 or the cover 2 and the main section 41 are connected to the mounting port 14 through the connecting section 42. The connecting portion 4 has a wire hole. The wire harness 8 is passed through the wire hole and extends into the glue pouring cavity 13, so as to complete the electrical connection with the heating core 3 in the accommodating cavity 12. The connection efficiency is high, and there is no restriction on the size of the mounting port 14 on the heating device 100 and the size of the wire harness 8. As long as the size of the wire harness 8 is smaller than the size of the mounting port 14, the size of the connecting section 42 and the size of the inner wall of the wire hole can be adjusted to be suitable for the mutual connection of the shell 1 or the cover 2 and the wire harness 8 of various sizes, and the production cost is extremely low.

[0033] It should be noted that the material of the connecting portion 4 is not limited, as long as the connecting section 42 of the connecting portion 4 is detachably connected to the mounting opening 14. For example, in some embodiments, the connecting portion 4 is made of an elastic material. In this way, the connecting section 42 of the elastic material has a sealing effect, which can avoid a gap when connected to the mounting opening 14, causing liquid to flow from the mounting opening 14 into the glue injection cavity 13.

[0034] After the wiring harness 8 is electrically connected to the connection interface 32 of the heating core 3, in order to prevent the main section 41 from being disconnected from the shell 1, causing the wiring harness 8 to be separated from the shell 1, and to prevent the main section 41 from excessively extending into the shell 1, causing the wiring harness 8 to be bent in the glue potting cavity 13, and the wires in the wiring harness 8 to be broken, in some embodiments, as Figure 3 As shown, two limiting segments 411 are convexly provided at intervals on the circumferential side of the main body segment 41 in the axial direction, and the connecting segment 42 is provided between the two limiting segments 411. In this way, the two limiting segments 411 limit the movement of the main body segment 41 relative to the housing 1, thereby preventing the wiring harness 8 from forcibly disconnecting the electrical connection with the connecting interface 32, causing damage to the connecting interface 32, and preventing the wiring harness 8 from bending in the glue potting cavity 13, causing the wire to break.

[0035] It should be noted that the diameter of each limiting segment 411 must be larger than the diameter of the installation opening 14, but the specific size of the limiting segment 411 is not limited. In some embodiments, the diameter of the limiting segment 411 is set to 1.5 to 2.5 times the diameter of the installation opening 14, and the specific size is determined according to actual needs.

[0036] Furthermore, in order to make the connection between the wiring harness 8 and the housing 1 more stable, in some embodiments, the diameter of the connecting section 42 is greater than the diameter of the mounting opening 14. Through the interference fit between the mounting opening 14 and the connecting section 42, the connecting section 42 can be clamped on the mounting opening 14, thereby connecting the housing 1 to the main section 41, and the wiring harness 8 extends from the wire hole of the connecting portion 4 into the glue filling cavity 13 of the housing 1, and is electrically connected to the connection interface 32, and the interference fit of the connecting section 42 can also play a certain sealing role, preventing liquid from flowing from the mounting opening 14 into the glue filling cavity 13.

[0037] Furthermore, in some embodiments, the distance between the two limiting segments 411 is smaller than the thickness of the installation opening 14. With such a configuration, the two limiting segments 411 enable the connection segment 42 and the installation opening 14 to achieve interference fit in the axial direction thereof, thereby achieving a certain sealing effect and preventing liquid from flowing from the installation opening 14 into the glue pouring cavity 13.

[0038] Further, in some embodiments, the inner diameter of the wire hole is smaller than the diameter of the wire harness 8. The wire harness 8 is fixed by interference fit between the inner wall of the wire hole and the outer wall of the wire harness 8.

[0039] It should be noted that the above three technical features can be set one by one, in combination of two, or simultaneously.

[0040] Since the wiring harness 8 does not necessarily extend along the axial direction of the connecting portion 4 in actual application scenarios, it needs to be adjusted according to the layout position of the heating device 100. In some embodiments, for example Figure 4 As shown, the connecting portion 4 further includes a guide section 43 for guiding the direction of the wire harness 8, the guide section 43 is provided at one end of the main body section 41 away from the installation opening 14, the guide section 43 extends in a direction away from the installation opening 14, and is bent toward the circumferential side of the main body section 41. By providing the guide section 43 to guide the direction of the wire harness 8, it is applicable to more application scenarios, and avoids forcibly bending the wire harness 8 according to the layout position of the heating device 100, resulting in damage to the wires in the wire harness 8.

[0041] In some embodiments, Figure 2 As shown, the shell 1 and the cover 2 are respectively provided with connection grooves 141, the two connection grooves 141 are arranged opposite to each other in the thickness direction of the shell 1, the connection section 42 is arranged between the two connection grooves 141, and the two connection grooves 141 are installed in cooperation to form the installation opening 14. In this arrangement, the connection part 4 is first installed in the connection groove 141 of the shell 1, and then the cover 2 is covered, the connection groove 141 of the cover 2 presses the connection section 42 of the connection part 4, so that the connection section 42 is connected to the installation opening 14 formed by the two connection grooves 141.

[0042] In order to prevent the heating core 3 from being heated without limit, which may cause damage to the heating device 100 or even an accident, in some embodiments, as Figure 1 As shown, the heating device 100 further includes a detection unit 5 for monitoring the temperature of the heating core 3, and the detection unit 5 is disposed on one side of the heating core 3. The heating device 100 further includes a controller, and the detection unit 5 is electrically connected to the controller. The temperature of the heating core 3 is monitored in real time through the detection unit 5, and the temperature information is transmitted to the controller. When the temperature of the heating core 3 reaches a warning temperature value, the controller controls power off, so that the heating core 3 stops working, so as to prevent the heating core 3 from being heated without limit.

[0043] Furthermore, in some embodiments, Figure 1As shown, the detection parts 5 are provided on both sides of the heating core 3, and the two detection parts 5 are connected in series. The two detection parts 5 can monitor the temperature of more positions of the heating core 3. At the same time, the two detection parts 5 are connected in series and are electrically connected to the controller. As long as the temperature value of the heating core 3 detected by any one of the detection parts 5 reaches the warning temperature value, the controller immediately controls the power off. Only when the temperature values ​​detected by the two detection parts 5 are lower than the warning temperature value, the controller will control the power on. Such a setting greatly improves the safety of the heating device 100.

[0044] Since the sealant is only poured into the glue-pouring cavity 13, in order to prevent the sealant from flowing into the accommodating cavity 12 and contacting the body 31 of the heating core 3 to affect the heating of the heating core 3, in some embodiments, as Figure 3 As shown, a sealing portion 6 is provided around the glue pouring cavity 13, and the distance from the free end of the sealing portion 6 to the bottom of the mounting groove 11 is greater than the thickness of the heating core 3. With such a configuration, after the cover body 2 covers the mounting groove 11, the free end of the sealing portion 6 abuts against the inner side wall of the cover body 2, and a sealing portion 6 is also provided at the position of the communication port, so that the glue pouring cavity 13 forms a closed space, which can not only prevent liquid from entering the glue pouring cavity 13 and causing a short circuit, but also prevent liquid from entering the accommodating cavity 12 and affecting the heating of the heating core 3.

[0045] There is no limitation on the connection method between the cover 2 and the shell 1, as long as the cover 2 and the shell 1 are detachably connected. In some embodiments, Figure 2 As shown, the heating device 100 further includes a buckle structure 7, the buckle structure 7 includes a buckle portion 71 and a matching portion 72, the buckle portion 71 and the matching portion 72 are detachably connected, and the housing 1 and the cover 2 are connected via the buckle portion 71 and the matching portion 72. In this way, the cover 2 and the housing 1 can be quickly disassembled and assembled via the buckle structure 7.

[0046] It should be noted that the cover body 2 and the housing 1 can be fixed by screw connection, or by using other connection structures known to those skilled in the art. Multiple connection methods can be set one by one or in combination.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating device, characterized in that: It includes a shell, a cover, a heating core and a wiring harness, the shell is provided with an installation groove for installing the heating core, and the shell is provided with a accommodating cavity and a glue pouring cavity, the glue pouring cavity and the accommodating cavity are connected through a connecting port, the cover covers the slot of the installation groove, the heating core includes a main body and a connecting interface for electrically connecting with the wiring harness, the main body is arranged in the accommodating cavity, the wiring harness is arranged in the glue pouring cavity, the connecting interface extends from the connecting port into the glue pouring cavity, and the glue pouring cavity is filled with sealant.

2. The heating device according to claim 1, characterized in that One end of the heating device is provided with an installation port, and the installation port is communicated with the glue pouring chamber. The heating device also includes a connecting part, and the connecting part includes a main body section and a connecting section. The shell or the cover body and the main body section are connected to the installation port through the connecting section. The connecting part has a wire hole for a wire harness to pass through, and the wire hole is communicated with the glue pouring chamber.

3. The heating device according to claim 2, characterized in that Two limiting sections are protruded and spaced apart from each other on the circumferential side of the main body section in the axial direction, and the connecting section is arranged between the two limiting sections.

4. The heating device according to claim 3, characterized in that The diameter of the connecting section is larger than the diameter of the mounting opening; and / or, The distance between the two limiting sections is smaller than the thickness of the installation opening; and / or, The inner diameter of the wire hole is smaller than the diameter of the wire harness.

5. The heating device according to claim 2, characterized in that: The connecting portion further comprises a guide section for guiding the direction of the wire harness, wherein the guide section is arranged at one end of the main body section away from the installation opening, the guide section extends in a direction away from the installation opening, and is bent toward the circumferential side of the main body section.

6. The heating device according to claim 2, characterized in that The shell and the cover are respectively provided with connecting grooves, the two connecting grooves are arranged opposite to each other in the thickness direction of the shell, the connecting section is arranged between the two connecting grooves, and the two connecting grooves are matched and installed to form the installation port.

7. The heating device according to claim 1, characterized in that It also includes a detection unit for monitoring the temperature of the heating core, and the detection unit is arranged on one side of the heating core.

8. The heating device according to claim 7, characterized in that The detection parts are arranged on both sides of the heating core, and the two detection parts are connected in series.

9. The heating device according to claim 1, characterized in that: A sealing portion is provided around the glue-filling cavity, and the distance from the free end of the sealing portion to the bottom of the mounting groove is greater than the thickness of the heating core.

10. The heating device according to claim 1, characterized in that It also includes a buckling structure, which includes a buckling part and a matching part. The buckling part and the matching part are detachably connected, and the shell and the cover are connected to the matching part through the buckling part.

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