CN212463536U - IGBT module fixing structure of PTC heater and PTC heater - Google Patents
IGBT module fixing structure of PTC heater and PTC heater Download PDFInfo
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- CN212463536U CN212463536U CN202021986321.0U CN202021986321U CN212463536U CN 212463536 U CN212463536 U CN 212463536U CN 202021986321 U CN202021986321 U CN 202021986321U CN 212463536 U CN212463536 U CN 212463536U
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- ptc heater
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Abstract
The utility model discloses a PTC heater's IGBT module fixed knot constructs and PTC heater, include: the PTC heater comprises a control box shell, an IGBT module, a positioning plate and a pressing strip mechanism, wherein the control box shell is provided with the PTC heater, the IGBT module is arranged on the control box shell, an insulating pad is arranged between the IGBT module and the control box shell, the positioning plate is used for limiting the IGBT module to slide relative to the control box shell through the positioning pin, and the pressing strip mechanism is arranged on the control box shell and used for pressing the positioning plate. The utility model discloses a be equipped with the locating pin in the bottom surface of locating plate and pass IGBT module and control box casing respectively, restrict the relative slip between IGBT module and the control box casing to compress tightly the top surface of locating plate through layering mechanism, restrict the removal of the upper and lower direction of locating plate, thereby fix the IGBT module on the control box casing. The reliability and feasibility of assembly can be guaranteed, the EMC effect is improved, the structure is simple, parts are few, and the cost is low.
Description
Technical Field
The patent relates to the technical field of PTC heaters, in particular to an IGBT module fixing structure of a PTC heater and the PTC heater.
Background
The PTC heater has the characteristics of high starting speed, good temperature control, high working reliability, energy conservation, long service life and the like, so the PTC heater is widely used for manufacturing various electric heating appliances, and even used as an important part of a control and protection device such as a current limiter, a filter protector, an overload protector and the like. At present, PTC heaters are often installed in new energy electric vehicles for battery thermal management and air conditioning heating.
The IGBT module is used as a core component in the PTC heater controller, the working reliability of the IGBT module has a decisive requirement on the overall PTC performance, and besides the performance of the IGBT module, the assembly reliability of the IGBT module also influences the working reliability of the IGBT module to a great extent. The fixing mode of the IGBT module at present mainly comprises: 1. the IGBT module is directly attached to the PTC control box shell and then fastened by screws. 2. The IGBT module is directly attached to the PTC control box shell, then a layer of silica gel pad is pressed on the PTC control box shell, and then the PTC control box shell is fixed through a pressing block. 3. The IGBT is placed in a plastic support, the support is placed on a control shell, a heat conduction insulating pad is arranged between the shell and the IGBT, and then the support is fixed through a pressing plate. The main disadvantage of the structure 1 is that the structure does not meet the safety requirements, and ignition phenomena occur between the screw and the control box shell and the IGBT module; the main disadvantage of the structure 2 is that the relative position of the IGBT and the shell is easy to deviate, and the positioning performance is not good; the main disadvantages of the structure 3 are more and more complicated parts and higher cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the above-mentioned prior art IGBT module fixed time relative position and produce the technical problem of deviation easily, provide a PTC heater's IGBT module fixed knot structure and PTC heater.
The utility model adopts the technical proposal that:
the utility model provides a PTC heater's IGBT module fixed knot constructs, include: the control box of PTC heater casing, the IGBT module is installed on the control box casing, be equipped with insulating pad between IGBT module and the control box casing, still include through setting up the gliding locating plate of locating pin restriction IGBT module relative control box casing, install the layering mechanism who compresses tightly the locating plate on the control box casing. The positioning pin is arranged on the bottom surface of the positioning plate, and the pressing strip mechanism is pressed on the top surface of the positioning plate.
Furthermore, the bottom surface of the locating plate is provided with at least one first locating pin, and the control box shell is provided with a first locating pin hole corresponding to the first locating pin.
In one embodiment, the bottom surface of the positioning plate is provided with a second positioning pin, the second positioning pin comprises side positioning pins clamped on two sides of the IGBT module and a through hole positioning pin penetrating through the IGBT module, and the IGBT module is provided with a second positioning pin hole corresponding to the through hole positioning pin. Notches are formed in two side plates of the IGBT module, and the side positioning pins are clamped at the notches.
In another embodiment, the bottom surface of the positioning plate is provided with a second positioning pin, the second positioning pin comprises side positioning pins clamped at two sides of the IGBT module, two side plates of the IGBT module are provided with notches, and the side positioning pins are clamped at the notches.
The layering mechanism includes: and a pressing strip for pressing the positioning plate penetrates through a pressing strip thread connected with the control box shell through a thread. The control box shell is provided with a positioning column, and the pressing strip is provided with a positioning hole corresponding to the positioning column.
Preferably, the insulating pad is an insulating heat conducting film.
Furthermore, a convex heat conduction base station is arranged at the position, where the insulating heat conduction film is placed, of the control box shell, and a plurality of radiating fins are arranged on at least one side face of the heat conduction base station.
The utility model also provides a PTC heater, including foretell IGBT module fixed knot structure.
Compared with the prior art, the utility model discloses a be equipped with the locating pin in the bottom surface of locating plate and pass IGBT module and control box casing respectively, restrict the relative slip between IGBT module and the control box casing to compress tightly the top surface of locating plate through layering mechanism, restrict the removal of the upper and lower direction of locating plate, thereby fix the IGBT module on the control box casing. The reliability and feasibility of assembly can be guaranteed, the EMC effect is improved, the structure is simple, parts are few, and the cost is low.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a PTC heater's IGBT module fixed knot constructs, include: the PTC heater comprises a control box shell 1, an insulating pad 2, a positioning plate 4 and a pressing strip mechanism. Insulating pad 2 pastes in one side of control box casing 1, IGBT module 3 pastes and adorns on insulating pad 2, the bottom surface of locating plate 4 is equipped with many locating pins, can pass IGBT module 3 and control box casing 1 respectively, restrict the relative slip between IGBT module 3 and the control box casing 1, layering mechanism installs on control box casing 1, press in the top surface of locating plate 4, restriction locating plate 4's the removal of upper and lower direction to fix IGBT module 3 on control box casing 1. The utility model discloses can guarantee the reliability and the feasibility of assembly to improve the EMC effect, and simple structure spare part is few, and is with low costs.
In a specific embodiment, the bottom surface of the positioning plate 4 is provided with two first positioning pins 41, the control box housing 1 is provided with a first positioning pin hole 11 corresponding to the first positioning pin 41, the bottom surface of the positioning plate 4 is further provided with a second positioning pin 42, the second positioning pin 42 comprises a side positioning pin clamped on two sides of the IGBT module and a perforation positioning pin penetrating through the IGBT module, the IGBT module 3 is provided with a second positioning pin hole 31 corresponding to the perforation positioning pin, two side plates of the IGBT module 3 are provided with notches 32, the side positioning pin is clamped at the notches 32, and the notches 32 can be semicircular and are convenient to insert.
In another embodiment, the second positioning pins only comprise side positioning pins which can be clamped on two sides of the IGBT module, and notches are arranged on two side plates of the IGBT module, and the side positioning pins are clamped in the notches, so that the sliding of the IGBT module relative to the control box shell can be limited. The parts are fewer, and the manufacturing cost is lower.
When the positioning plate 4 is mounted, the first positioning pin 41 and the second positioning pin 42 are directly inserted into the corresponding positions, so that the positioning plate 4 covers the IGBT module 3, and the relative sliding between the IGBT module 3 and the control box housing 1 is restricted.
The layering mechanism includes: the pressing device comprises a pressing strip 5 and a pressing strip screw 6, wherein one end of the pressing strip 5 is pressed on the positioning plate 4, the other end of the pressing strip 5 is provided with a through hole, and the pressing strip screw 6 penetrates through the through hole of the pressing strip 5 to be in threaded connection with the control box shell 1, so that the pressing strip 5 can be tightly pressed on the positioning plate 4 by screwing the pressing strip screw 6.
The control box shell 1 is provided with a threaded hole corresponding to the pressing strip screw, positioning columns are arranged beside the threaded hole side by side, positioning holes corresponding to the positioning columns are formed in the pressing strips, the pressing strips can be conveniently aligned and positioned during installation, and installation efficiency is improved.
The utility model discloses in, insulating pad 2 specifically is insulating heat conduction membrane, pastes the installation of being convenient for on the control box casing, also can be for other insulating heat conduction materials, all is the utility model discloses a within the scope. The position that insulating heat conduction membrane was placed to control box casing 1 is equipped with convex heat conduction base station, is equipped with multi-disc fin 7 on two sides of heat conduction base station, improves the radiating effect of IGBT module to lifting means performance prevents thermal ageing.
The utility model also provides a PTC heater, including foretell IGBT module fixed knot structure.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An IGBT module fixing structure of a PTC heater, comprising: the PTC heater comprises a control box shell of the PTC heater, an IGBT module is installed on the control box shell, an insulating pad is arranged between the IGBT module and the control box shell, the PTC heater is characterized by further comprising a positioning plate for limiting the IGBT module to slide relative to the control box shell through a positioning pin, and a pressing strip mechanism for pressing the positioning plate is installed on the control box shell.
2. An IGBT module fixing structure of a PTC heater according to claim 1, wherein the positioning pins are provided on a bottom surface of the positioning plate, and the hold-down bar mechanism is pressed against a top surface of the positioning plate.
3. An IGBT module fixing structure of a PTC heater according to claim 1, wherein the positioning plate is provided at a bottom surface thereof with at least one first positioning pin, and the control box housing is provided with a first positioning pin hole corresponding to the first positioning pin.
4. An IGBT module fixing structure of a PTC heater according to claim 3, wherein the bottom surface of the positioning plate is provided with a second positioning pin, the second positioning pin comprises a side positioning pin clamped on both sides of the IGBT module and a through positioning pin penetrating the IGBT module, and the IGBT module is provided with a second positioning pin hole corresponding to the through positioning pin.
5. An IGBT module fixing structure of a PTC heater according to claim 4, wherein both side plates of the IGBT module are provided with notches in which the side positioning pins are clipped.
6. An IGBT module fixing structure of a PTC heater according to claim 3, wherein the positioning plate is provided at a bottom surface thereof with second positioning pins including side positioning pins which are clamped at both sides of the IGBT module, and both side plates of the IGBT module are provided with notches in which the side positioning pins are clamped.
7. An IGBT module fixing structure of a PTC heater according to claim 1, wherein the bead mechanism comprises: and a pressing strip for pressing the positioning plate penetrates through a pressing strip thread connected with the control box shell through a thread.
8. The IGBT module fixing structure of a PTC heater according to claim 1, wherein the insulating mat is an insulating heat conductive film.
9. The IGBT module fixing structure for a PTC heater according to claim 8, wherein the control box case is provided at a position where the insulating heat conductive film is placed with a protruded heat conductive base, and at least one side of the heat conductive base is provided with a plurality of heat radiating fins.
10. A PTC heater comprising the IGBT module fixing structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021986321.0U CN212463536U (en) | 2020-09-11 | 2020-09-11 | IGBT module fixing structure of PTC heater and PTC heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021986321.0U CN212463536U (en) | 2020-09-11 | 2020-09-11 | IGBT module fixing structure of PTC heater and PTC heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212463536U true CN212463536U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021986321.0U Active CN212463536U (en) | 2020-09-11 | 2020-09-11 | IGBT module fixing structure of PTC heater and PTC heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212463536U (en) |
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- 2020-09-11 CN CN202021986321.0U patent/CN212463536U/en active Active
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