CN117355112A - Power converter convenient to installation and heat dissipation - Google Patents

Power converter convenient to installation and heat dissipation Download PDF

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Publication number
CN117355112A
CN117355112A CN202311491245.4A CN202311491245A CN117355112A CN 117355112 A CN117355112 A CN 117355112A CN 202311491245 A CN202311491245 A CN 202311491245A CN 117355112 A CN117355112 A CN 117355112A
Authority
CN
China
Prior art keywords
power converter
aluminum
shell
circuit board
blocks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311491245.4A
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Chinese (zh)
Inventor
许诺
汪兴雨
王昌峰
赵家茂
汪见齐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui In One New Energy Technology Co ltd
Original Assignee
Anhui In One New Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui In One New Energy Technology Co ltd filed Critical Anhui In One New Energy Technology Co ltd
Priority to CN202311491245.4A priority Critical patent/CN117355112A/en
Publication of CN117355112A publication Critical patent/CN117355112A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention discloses a power converter convenient to mount and radiate, which relates to the technical field of power converters, and comprises a power converter plastic shell, a connector, a ceramic plate and a circuit board, wherein the ceramic plate and the circuit board are arranged in the power converter plastic shell, an electronic element is welded above the edge of the circuit board, and the connector is connected with the circuit board in the power converter plastic shell; the invention ensures that sufficient aluminum alloy materials absorb and radiate heat generated in the operation process of the power converter, the two surfaces of the power converter shell adopt aluminum materials to reduce the use of the aluminum alloy materials, the matched clamping grooves and the matched clamping blocks are quickly clamped and then are fixed through tapping screws, the number of screws is reduced, the speed of assembling the shell is improved, the position of the electronic element can be firmly fixed between the aluminum shell and the compression block, the heat radiated by the electronic element can be absorbed and radiated by the aluminum shell, and the radiating effect is better.

Description

Power converter convenient to installation and heat dissipation
Technical Field
The invention relates to the technical field of power converters, in particular to a power converter convenient to install and radiate.
Background
The DCDC power converter is taken as an important component in the new energy electric vehicle, the power converter shell is a part for protecting and fixing an internal conversion device or electronic element, and the general power converter takes an extruded aluminum alloy shell as a main body structure, so that the power converter has the functions of installing and fixing other part structures and circuit board components and absorbing heat and dissipating heat;
however, the shell of the power converter in the prior art has certain defects, because the shell of the power converter adopts extruded aluminum alloy as a main body structure, aluminum alloy materials are not concentrated at the heating element part, more materials are consumed, the materials are not beneficial to saving materials, the appearance of an extruded aluminum alloy shell product is cuboid, the fixing modes of the two ends of the shell and the end cover and the fixing modes of the shell and the electronic element are screw fixing, more fixing screws are needed, more screws are needed to rotate during installation, the installation process is complicated and the efficiency is low, and the power converter shell and the internal part are more troublesome to install.
Disclosure of Invention
The present invention is directed to a power converter that is convenient for installation and heat dissipation, and solves the problems set forth in the background art.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a power converter convenient to installation and heat dissipation, includes power converter plastic housing, connector, potsherd and circuit board all set up in the inside of power converter plastic housing, and the edge top welding of circuit board has electronic component, and the connector is connected with the inside circuit board of power converter plastic housing; the bottom and the side of power converter plastic casing are provided with heat dissipation shell structure, heat dissipation shell structure is including aluminium system shell and aluminium system base that mutually perpendicular arranged, vertical cross-section shape between aluminium system shell and the aluminium system base is L type, aluminium system shell and power converter plastic casing lateral wall amalgamation each other, aluminium system base and power converter plastic casing bottom amalgamation each other, one side of aluminium system shell is provided with one row of fin, aluminium system shell and potsherd contact each other, four corner homogeneity castings of aluminium system base have the locating pin, aluminium system base is connected with the circuit board through the locating pin, aluminium system base's surface and be located the lower surface edge homogeneity casting of circuit board have the supporting shoe, circuit board and aluminium system base mutual parallel arrangement, power converter plastic casing is fixed mutually with aluminium system shell, aluminium system base through the installation component.
In a preferred technical scheme of the invention, the horizontal section of the aluminum shell is comb-shaped, the radiating fins are linearly arranged on the outer side of the aluminum shell, and the aluminum shell is in contact with the ceramic plates.
As a preferable technical scheme of the invention, the mounting assembly comprises two groups of first connecting blocks and second connecting blocks which are mutually corresponding, the first connecting blocks, the aluminum shell and the radiating fins are integrally cast and formed, the second connecting blocks and the edges of the plastic shell of the power converter are integrally injection molded, connecting holes are formed in the middle of the first connecting blocks at the top ends of the radiating fins, self-tapping screws are screwed between the second connecting blocks of the plastic shell of the power converter and the first connecting holes of the radiating fins, matching clamping blocks are arranged at the edges of the three sides of the bottom end of the plastic shell of the power converter, matching clamping grooves are formed in the edges of the aluminum base and at the positions corresponding to the matching clamping blocks, and the matching clamping blocks are elastically clamped with the matching clamping grooves.
As a preferable technical scheme of the invention, the cross section of the matched clamping block is h-shaped, the number of the matched clamping grooves and the matched clamping blocks is six, and the six matched clamping grooves are C-shaped and are arranged at the edge of the aluminum base.
As a preferable technical scheme of the invention, a plurality of rows of compression blocks are arranged in the plastic shell of the power converter, the electronic elements are mutually aligned with the compression blocks, the ceramic plates and the electronic elements are positioned at gaps between the compression blocks and the aluminum shell, the compression blocks are attached to the electronic element shell, and the ceramic plates are attached to the side walls of the aluminum shell.
As a preferable technical scheme of the invention, a sealing groove is formed in the inner top surface of the plastic shell of the power converter, a sealing strip is arranged at the edge of the top end of the aluminum shell, the sealing strip is matched with the sealing groove in position, and a sealing ring is arranged between the sealing strip and the sealing groove.
Compared with the prior art, the invention has the beneficial effects that:
1. the heat dissipation shell structure is arranged, the aluminum shell and the aluminum base are arranged around the heating element in a concentrated mode according to the placement position of the heating electronic element on the circuit board of the product, sufficient aluminum alloy materials are guaranteed to absorb and dissipate heat generated in the operation process of the power converter, the aluminum materials are adopted on two sides of the power converter shell to reduce the use of the aluminum alloy materials, material saving is achieved, and heat dissipation of the ceramic chip and the electronic element can be accelerated through the aluminum shell and the heat dissipation fins;
2. the heat dissipation shell structure and the plastic shell of the power converter are installed through the installation component, the matched clamping groove and the matched clamping block are quickly clamped and then are fixed through the tapping screw, the number of screws is reduced, and the speed of assembling the shell is improved;
3. the compressing blocks of the mounting assembly are propped against the electronic element, so that the electronic element can be firmly fixed between the aluminum shell and the compressing blocks, and the heat emitted by the electronic element can be absorbed and emitted by the aluminum shell, and the heat-radiating effect is better;
drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a split view of the main structure of the present invention;
FIG. 3 is a schematic view of a heat dissipating housing according to the present invention;
FIG. 4 is a schematic view of a self-tapping screw of the mounting assembly of the present invention;
FIG. 5 is a schematic view of a mating detent and a mating detent of the present invention;
FIG. 6 is a schematic view of a seal groove and seal strip of the present invention.
In the figure: 1. a power converter plastic housing; 2. a connector; 3. a heat dissipation housing structure; 4. a mounting assembly; 5. a ceramic sheet; 6. a circuit board; 7. an electronic component; 31. an aluminum housing; 32. a heat sink; 33. an aluminum base; 34. a support block; 35. a positioning pin; 41. a first connection block; 42. a connection hole; 43. self-tapping screw; 44. a matching clamping groove; 45. matching with a clamping block; 46. a compaction block; 47. a second connection block; 48. sealing grooves; 49. and (5) a sealing strip.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-3, a power converter with convenient installation and heat dissipation comprises a power converter plastic housing 1, a connector 2, a ceramic plate 5 and a circuit board 6, wherein the ceramic plate 5 and the circuit board 6 are arranged in the power converter plastic housing 1, the ceramic plate 5 is used for conducting heat to the insulation of an electronic element 7, the electronic element 7 is welded above the edge of the circuit board 6, and the connector 2 is connected with the circuit board 6 in the power converter plastic housing 1; the bottom end and the side face of the power converter plastic housing 1 are provided with a heat dissipation housing structure 3, the heat dissipation housing structure 3 comprises an aluminum housing 31 and an aluminum base 33 which are mutually vertically arranged, the vertical section shape between the aluminum housing 31 and the aluminum base 33 is L-shaped, the aluminum housing 31 and the aluminum base 33 are integrally cast and formed, the aluminum housing 31 and the side wall of the power converter plastic housing 1 are mutually spliced, the aluminum base 33 and the bottom of the power converter plastic housing 1 are mutually spliced, the aluminum housing 31, the aluminum base 33 and the power converter plastic housing 1 mutually encircle to form a box-shaped housing, one side of the aluminum housing 31 is provided with a row of heat dissipation fins 32, the heat dissipation fins 32 increase the contact area of the aluminum housing 31 and air, thereby the heat dissipation effect of the aluminum housing 31 can be accelerated, the aluminum shell 31 is contacted with the ceramic plate 5, heat emitted by the work of the electronic element 7 is conducted to the aluminum shell 31 through the ceramic plate 5, the four corners of the aluminum base 33 are integrally cast with the positioning pins 35, the corners of the circuit board 6 are provided with fixing holes matched with the positioning pins 35, the aluminum base 33 is connected with the circuit board 6 through the positioning pins 35, the surface of the aluminum base 33 and the edge of the lower surface of the aluminum base 6 are uniformly cast with the supporting blocks 34, the circuit board 6 is supported through the supporting blocks 34, the circuit board 6 is prevented from being suspended, the circuit board 6 and the aluminum base 33 are arranged in parallel, the heat of the circuit board 6 can be transferred to the aluminum base 33, and the power converter plastic shell 1 is fixed with the aluminum shell 31 and the aluminum base 33 through the mounting assembly 4.
In this embodiment, the horizontal section of the aluminum housing 31 is comb-shaped, the heat dissipation fins 32 are linearly arranged on the outer side of the aluminum housing 31, the aluminum housing 31 is in contact with the ceramic plate 5, and the contact area between the aluminum housing 31 and air can be increased by using the heat dissipation fins 32, so that the heat dissipation effect is better due to the cooperation of the heat dissipation fins 32 and the aluminum housing 31.
Embodiment two:
referring to fig. 2 and 4, the mounting assembly 4 includes two sets of first connecting blocks 41 and second connecting blocks 47 corresponding to each other, the first connecting blocks 41, the aluminum housing 31 and the heat sink 32 are integrally cast, the second connecting blocks 47 are integrally injection molded with the edges of the power converter plastic housing 1, the connecting holes 42 are formed in the middle of the first connecting blocks 41 at the top ends of the heat sink 32, self-tapping screws 43 are screwed between the second connecting blocks 47 of the power converter plastic housing 1 and the first connecting holes 42 of the heat sink 32, the edges of the power converter plastic housing 1 are fixed with the aluminum housing 31 through the self-tapping screws 43, the three side edges at the bottom end of the power converter plastic housing 1 are provided with matching clamping blocks 45, the edges of the aluminum base 33 are provided with matching clamping grooves 44 at positions corresponding to the matching clamping blocks 45, and the matching clamping blocks 45 are elastically clamped with the matching clamping grooves 44, namely, the bottom of the power converter plastic housing 1 is clamped with the aluminum base 33 through the matching clamping grooves 44 and the matching clamping blocks 45.
Referring to fig. 5, the cross-sectional shape of the mating fixture block 45 is h-shaped, and the number of the mating fixture block 45 and the mating fixture block 44 is six, and the edges of the mating fixture block 45 are clamped inside the mating fixture block 44 through the h-shaped, so that the power converter plastic housing 1 and the aluminum base 33 are elastically clamped with each other, the six mating fixture blocks 44 are C-shaped and arranged at the edge of the aluminum base 33, and the six mating fixture blocks 45 and the six mating fixture blocks 44 are distributed at the four edges of the aluminum base 33, so that the power converter plastic housing 1 and the aluminum base 33 can be firmly connected.
Referring to fig. 6, a plurality of rows of pressing blocks 46 are disposed inside the plastic housing 1 of the power converter, the pressing blocks 46 are located on one side of the electronic component 7, the pressing blocks 46 are in contact with the electronic component 7, the electronic component 7 and the pressing blocks 46 are aligned with each other, the ceramic sheet 5 and the electronic component 7 are located at the gap between the pressing blocks 46 and the aluminum housing 31, the pressing blocks 46 elastically deform when the plastic housing 1 of the power converter is pressed down, the pressing blocks 46 abut against the electronic component 7 to enable the ceramic sheet 5 to abut against the side wall of the aluminum housing 31, and when the plastic housing 1 of the power converter is mounted above the aluminum base 33, the pressing blocks 46 contact with the electronic component 7 first, so that the electronic component 7 is pushed against the inner wall of the aluminum housing 31 and the ceramic sheet 5 abuts against the inner wall of the aluminum housing 31, so that heat emitted by the electronic component 7 at the position of the ceramic sheet 5 can be transferred to the aluminum housing 31 as soon as possible.
In this embodiment, the top surface of the inside of the power converter plastic housing 1 is provided with the sealing groove 48, the top edge of the aluminum housing 31 is provided with the sealing strip 49, the sealing strip 49 is matched with the sealing groove 48 in position, the sealing strip 49 is provided with the sealing groove 48, the sealing ring is 2mm in diameter, the sealing strip 49 and the sealing groove 48 are sealed through the sealing ring, and when the power converter plastic housing 1 is covered with the aluminum housing 31, the sealing strip 49 of the aluminum housing 31 and the sealing groove 48 of the power converter plastic housing 1 are aligned with each other.
It should be noted that, various electrical appliances develop not only in the direction of saving energy, convenient to use, saving space, characteristics such as safe and efficient in the use, DCDC power converter is as the important one in new forms of energy electric vehicle, the power converter is assembled or welded the inside part of shell in the time of the equipment, fix electronic component 7 and circuit board 6 each other, install electronic component 7 in one side of potsherd 5, paste potsherd 5 in one side of aluminium shell 31, and connect connector 2 with circuit board 6, can assemble the shell of power converter this moment, specifically, make up aluminium shell 31 and aluminium system base 33 and power converter plastic shell 1 of integrated into one piece at this moment, six cooperation clamping grooves 44 of aluminium system base 33 of power converter plastic shell 1, through the inside of the cooperation clamping groove 44 of the clamping 45 edge chucking of h type, make mutual elasticity joint between power converter plastic shell 1 and base 33, six cooperation clamping groove 44 and cooperation clamping groove 45 distribute in one side of aluminium shell 31 at aluminium shell 31, and the sealing strip of sealing strip 1 and sealing strip 1 are made of aluminium system base 33, seal strip 1 is pressed down with sealing strip 46, seal strip 1 is pressed down to seal groove 46, seal strip 1 is pressed down with the sealing strip 1 is pressed down to seal groove 46, seal groove 1 and sealing strip 1 is pressed down, seal groove 1 is pressed down and seal groove is pressed down, seal groove is pressed down and seal groove is pressed down, seal and seal groove is 2, seal is pressed down, seal is, the aluminum base 33 is clamped with the power converter plastic housing 1, and finally screwed into the second connecting block 47 and the first connecting block 41 through the tapping screw 43, so that the edge of the power converter plastic housing 1 and the edge of the aluminum housing 31 are mutually fixed, at this time, the aluminum housing 31, the aluminum base 33 and the heat dissipation housing structure 3 are enclosed into a box shape, and the ceramic wafer 5, the circuit board 6 and the electronic component 7 are fixed inside the power converter housing;
during operation, the one row of fin 32 that one side of aluminium system shell 31 set up, fin 32 increases aluminium system shell 31 and air contact's area, thereby can accelerate aluminium system shell 31 radiating effect, because aluminium system shell 31 and ceramic wafer 5 contact each other, ceramic wafer 5 not only can insulate electronic component 7, can also conduct heat with the heat that electronic component 7 produced, the heat conduction that electronic component 7 work was given off to aluminium system shell 31 department, the fixed orifices with locating pin 35 looks adaptation are seted up at the turning of circuit board 6, aluminium system base 33 is connected with circuit board 6 through locating pin 35, support circuit board 6 through supporting shoe 34, avoid the emergence unsettled of circuit board 6, circuit board 6 and aluminium system base 33 mutual parallel arrangement, the heat that circuit board 6 produced is less, can dispel the heat through the space between circuit board 6 and the aluminium system base 33, also can utilize aluminium supporting shoe 34 and locating pin 35 to conduct heat to circuit board 6, can more quick transfer the heat of circuit board 6 to aluminium system base 33 department.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (6)

1. The utility model provides a power converter convenient to installation and heat dissipation, includes power converter plastic housing (1), connector (2), potsherd (5) and circuit board (6) all set up in the inside of power converter plastic housing (1), and electronic component (7) have been welded above the edge of circuit board (6), and connector (2) are connected with circuit board (6) in power converter plastic housing (1); the power converter plastic shell is characterized in that a heat dissipation shell structure (3) is arranged at the bottom end and the side face of the power converter plastic shell (1), the heat dissipation shell structure (3) comprises an aluminum shell (31) and an aluminum base (33) which are arranged vertically, the vertical cross section between the aluminum shell (31) and the aluminum base (33) is L-shaped, the side walls of the aluminum shell (31) and the power converter plastic shell (1) are mutually spliced, the aluminum base (33) and the bottom of the power converter plastic shell (1) are mutually spliced, a row of radiating fins (32) are arranged on one side of the aluminum shell (31), the aluminum shell (31) and the ceramic plates (5) are mutually contacted, positioning pins (35) are uniformly cast on four corners of the aluminum base (33), the aluminum base (33) is connected with a circuit board (6) through the positioning pins (35), supporting blocks (34) are uniformly cast on the surface of the aluminum base (33) and are located at the edge of the lower surface of the circuit board (6), the circuit board (6) and the base (33) are mutually parallel to each other, and the power converter plastic shell (1) is fixed with the aluminum base (33) through the mounting components (4) and the aluminum shell (31).
2. A power converter according to claim 1, characterized in that the horizontal section of the aluminum housing (31) is comb-shaped, the heat sink (32) is arranged linearly outside the aluminum housing (31), and the aluminum housing (31) is in contact with the ceramic plate (5).
3. The power converter convenient for installation and heat dissipation according to claim 2, wherein the installation component (4) comprises two groups of first connecting blocks (41) and second connecting blocks (47) which correspond to each other, the first connecting blocks (41), the aluminum shell (31) and the heat dissipation fins (32) are integrally cast and formed, the second connecting blocks (47) and the edges of the power converter plastic shell (1) are integrally injection-molded, the connecting holes (42) are formed in the middle of the first connecting blocks (41) at the top ends of the heat dissipation fins (32), self-tapping screws (43) are screwed between the second connecting blocks (47) of the power converter plastic shell (1) and the first connecting holes (42) of the heat dissipation fins (32), the three-side edges at the bottom end of the power converter plastic shell (1) are provided with matching clamping blocks (45), the edges of the aluminum base (33) are provided with matching clamping grooves (44) at positions corresponding to the matching clamping blocks (45), and the matching clamping blocks (45) are elastically clamped with the matching clamping grooves (44).
4. A power converter for facilitating installation and heat dissipation according to claim 3, wherein the cross-sectional shape of the mating block (45) is h-shaped, the number of the mating grooves (44) and the number of the mating blocks (45) are six, and the six mating grooves (44) are C-shaped and arranged at the edge of the aluminum base (33).
5. A power converter according to claim 3, characterized in that the plastic housing (1) of the power converter is internally provided with a plurality of rows of pressing blocks (46), the electronic components (7) are aligned with the pressing blocks (46), the ceramic plates (5) and the electronic components (7) are located at the gaps between the pressing blocks (46) and the aluminum housing (31), the pressing blocks (46) are attached to the electronic components (7) and the ceramic plates (5) are attached to the side walls of the aluminum housing (31).
6. The power converter convenient to install and radiate according to claim 5, wherein a sealing groove (48) is formed in the inner top surface of the plastic casing (1) of the power converter, a sealing strip (49) is arranged at the top edge of the aluminum casing (31), the sealing strip (49) is matched with the sealing groove (48), and a sealing ring is arranged between the sealing strip (49) and the sealing groove (48).
CN202311491245.4A 2023-11-10 2023-11-10 Power converter convenient to installation and heat dissipation Pending CN117355112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311491245.4A CN117355112A (en) 2023-11-10 2023-11-10 Power converter convenient to installation and heat dissipation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311491245.4A CN117355112A (en) 2023-11-10 2023-11-10 Power converter convenient to installation and heat dissipation

Publications (1)

Publication Number Publication Date
CN117355112A true CN117355112A (en) 2024-01-05

Family

ID=89364944

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311491245.4A Pending CN117355112A (en) 2023-11-10 2023-11-10 Power converter convenient to installation and heat dissipation

Country Status (1)

Country Link
CN (1) CN117355112A (en)

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