CN107708294B

CN107708294B - Electric vehicle alternating current motor controller printed board

Info

Publication number: CN107708294B
Application number: CN201711101641.6A
Authority: CN
Inventors: 王慧波; 周浩; 杜英坤
Original assignee: Tianjin Energetic Auto Motor Technology Co ltd
Current assignee: Tianjin Energetic Auto Motor Technology Co ltd
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2023-09-26
Anticipated expiration: 2037-11-09
Also published as: CN107708294A

Abstract

The invention provides an electric vehicle alternating current motor controller printed board which comprises a PCB, an aluminum substrate and an aluminum bottom plate which are sequentially arranged from top to bottom, wherein a plurality of irregularly arranged copper columns are arranged between the PCB and the aluminum substrate, bolts penetrate through the copper columns to fixedly connect the PCB and the aluminum substrate, an insulating layer is arranged on the outer wall of each bolt, a round groove is formed in one end, close to the aluminum substrate, of each copper column, a plurality of positioning mechanisms are further arranged between the PCB and the aluminum substrate, and a plurality of evenly distributed grooves are formed in one end, close to the aluminum substrate, of each aluminum bottom plate. The invention discloses an electric vehicle alternating current motor controller printed board, which aims to ensure that the thickness between boards is uniform, the stabilizing effect is good, the better power-over effect is ensured while the loosening is not easy, the creepage effect is improved to the greatest extent, the heat dissipation effect in the process is ensured, the service life of the printed board is ensured, the use effect is better, and the stability is stronger.

Description

Electric vehicle alternating current motor controller printed board

Technical Field

The invention belongs to the field of printed boards, and particularly relates to an electric vehicle alternating current motor controller printed board.

Background

Printed circuit boards, also called printed circuit boards, are providers of electrical connection of electronic components, along with the development of society, various electronic products are updated more and more widely, and the use environment and the use requirements of the printed circuit boards are also higher and higher, so that corresponding deformation is required to be made on the existing printed circuit boards to adapt to higher requirements. Aiming at the situation, the invention provides the printed board of the alternating current motor controller of the electric vehicle, which aims to ensure that the thickness between boards is uniform, the stabilizing effect is good, the better power-over effect is ensured while the loosening is not easy, the creepage effect is improved to the maximum extent, the heat dissipation effect in the process is ensured, the service life of the printed board is ensured, the use effect is better, and the stability is stronger.

Disclosure of Invention

In view of the above, the invention aims to provide an electric vehicle alternating current motor controller printed board, which aims to ensure that the thickness between boards is uniform, the stabilizing effect is good, the better power-over effect is ensured while the loosening is not easy, the creepage effect is improved to the maximum extent, the heat dissipation effect in the process is ensured, the service life of the printed board is ensured, the use effect is better, and the stability is stronger.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

the utility model provides an electric motor car alternating current motor controller printed board, includes PCB board, aluminium base board and the aluminium bottom plate that from the top down placed in proper order, PCB board with be equipped with a plurality of irregularly arranged copper posts between the aluminium base board, the bolt passes the copper post will PCB board with aluminium base board fixed connection, the bolt outer wall is equipped with the insulating layer and keeps apart it with copper post with PCB board is all isolated, the copper post is close to the one end of aluminium base board is equipped with the circular slot;

a plurality of positioning mechanisms are further arranged between the PCB and the aluminum substrate, the positioning mechanisms are arranged among the copper columns and do not interfere with the copper columns, and a plurality of evenly distributed grooves are formed in one end, close to the aluminum substrate, of the aluminum substrate.

Further, the diameter of the copper column is 2 times of the diameter of the bolt, and the distance from the inner wall of the circular groove to the outer wall of the bolt is not less than 2mm.

Further, the positioning mechanism comprises a first positioning seat and a second positioning seat which are respectively and correspondingly arranged on the PCB and the aluminum substrate, and a first base plate and a second base plate are respectively arranged at the mutually approaching ends of the first positioning seat and the second positioning seat.

Further, the first positioning seat and the second positioning seat are respectively non-conductive plastic cylindrical blocks, and the first base plate and the second base plate are made of metal materials which are not easy to deform and have good stability.

Further, a threaded hole is formed in the position, corresponding to the copper column, of the aluminum bottom plate, and the bolt penetrates through the copper column to be in threaded fit with the threaded hole.

Further, the depth of the groove is not more than one half of the thickness of the aluminum bottom plate.

Further, the distance between adjacent grooves is not less than 3mm.

Compared with the prior art, the printed board of the alternating current motor controller of the electric vehicle has the following advantages:

(1) The invention discloses an electric vehicle alternating current motor controller printed board, which aims to ensure that the thickness between boards is uniform, the stabilizing effect is good, the better power-over effect is ensured while the loosening is not easy, the creepage effect is improved to the greatest extent, the heat dissipation effect in the process is ensured, the service life of the printed board is ensured, the use effect is better, and the stability is stronger.

(2) According to the printed board of the alternating current motor controller of the electric vehicle, the arrangement of different connection areas at the two ends of the copper column ensures that the insulation sleeve has enough contact area, the pressure of the bolt is effectively transmitted, and the smaller contact area at the other end ensures that the gap between the hole wall and the bolt is large enough, so that the requirements of electric gap and creepage distance are met, and the over-electricity effect is improved.

(3) The printed board of the alternating current motor controller of the electric vehicle ensures the uniform thickness of the whole printed board when in use through the matched arrangement of the positioning seat, has better stability, and meanwhile, the pad plate has smaller abrasion due to the use, is convenient to replace and prolongs the service life.

(4) According to the printed board of the alternating current motor controller of the electric vehicle, disclosed by the invention, the radiating effect in the process of power failure is improved through the design of the grooves, the damage rate of each part is reduced, and the service life is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a schematic diagram of the overall structure of a printed board of an ac motor controller for an electric vehicle according to an embodiment of the present invention.

Reference numerals illustrate:

1-a bolt; 2-an insulating layer; 3-a PCB board; 4-copper columns; 5-a first positioning seat; 6-a first backing plate; 7-a second positioning seat; 8-a second backing plate; 9-an aluminum substrate; 10-grooves; 11-aluminum bottom plate; 12-a threaded hole; 13-circular groove.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

The utility model provides an electric motor car alternating current motor controller printed board, includes PCB board 3, aluminium base board 9 and aluminium bottom plate 11 that from the top down placed in proper order, PCB board 3 with be equipped with a plurality of irregularly arranged copper post 4 between the aluminium base board 9, bolt 1 pass copper post 4 will PCB board 3 with aluminium base board 9 fixed connection, bolt 1 outer wall be equipped with insulating layer 2 with it with copper post 4 with PCB board 3 all keeps apart, copper post 4 is close to aluminium base board 9's one end is equipped with circular slot 13, and its aim at guarantees that the inter-plate thickness is even, and stable effectual, guarantee to have better power effect when difficult not hard up, furthest improves the creepage effect, guarantees the radiating effect of in-process simultaneously, guarantees the life of printed board, and the result of use is better, and stability is stronger.

The PCB 3 with still be equipped with a plurality of positioning mechanism between the aluminium base board 9, positioning mechanism arranges a plurality of between the copper post 4 and not interfere with it, aluminium bottom plate 11 is close to the one end of aluminium base board 9 is equipped with a plurality of evenly distributed's recess 10, through the radiating effect of recess 10's design improvement in the process of passing electricity, reduce the spoilage of each part, improve life, the setting of the different area of connection at copper post 4 both ends has guaranteed insulating layer 2 to have sufficient area of contact simultaneously, guarantee effective transfer bolt 1's pressure, the less area of contact of the other end guarantees that the pore wall is enough big with bolt 1's clearance, in order to satisfy electric clearance and creepage distance requirement, improve the effect of passing electricity.

The diameter of the copper column 4 is 2 times of the diameter of the bolt 1, and the distance from the inner wall of the circular groove 13 to the outer wall of the bolt 1 is not less than 2mm.

The positioning mechanism comprises a first positioning seat 5 and a second positioning seat 8 which are respectively and correspondingly arranged on the PCB 3 and the aluminum substrate 9, and a first base plate 6 and a second base plate 7 are respectively arranged at the mutually approaching ends of the first positioning seat 5 and the second positioning seat 8.

Wherein, first positioning seat 5 with second positioning seat 8 is the cylindricality piece of nonconductive plastics material respectively, first backing plate 6 with second backing plate 7 is difficult for yielding and the better metal material of stability, guarantees its holistic thickness when using through the complex setting of positioning seat even, and stability is better, and the use of backing plate makes wearing and tearing less simultaneously, and is convenient for change, improves life.

The aluminum bottom plate 11 is provided with a threaded hole 12 at a position corresponding to the copper column 4, and the bolt 1 penetrates through the copper column 4 to be in threaded fit with the threaded hole 12.

Wherein the depth of the groove 10 is not more than one half of the thickness of the aluminum bottom plate 11.

Wherein the distance between adjacent grooves 10 is not less than 3mm.

The working principle of the invention is as follows: as shown in FIG. 1, the material of the copper column 4 is copper H96, the surface is tinned, the diameters of two ends of the copper column 4 are different, the end with large contact area is tightly matched with the insulating layer 2, the pressing area is ensured, the wall thickness of the other end is at least 2mm, the electric motor controller is easier to be heated uniformly in the welding process, the welding quality is ensured, the distance between the electric motor controller and the metal bolt 1 is ensured, the installation welding error is considered to at least ensure that the electric gap and the creepage distance are not less than 2mm, the electric motor controller can be applied to a system with the nominal voltage of 200V and below, the thickness requirement and the heat dissipation effect are respectively ensured by the arrangement of the positioning plate and the groove, the service life of the printed board can be prolonged in the use process, the use effect is improved, the over-electricity efficiency is better, and the stability is stronger.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The utility model provides an electric motor car alternating current motor controller printing board which characterized in that: the aluminum base plate comprises a PCB (3), an aluminum base plate (9) and an aluminum base plate (11) which are sequentially arranged from top to bottom, wherein a plurality of irregularly arranged copper columns (4) are arranged between the PCB (3) and the aluminum base plate (9), bolts (1) penetrate through the copper columns (4) to fixedly connect the PCB (3) and the aluminum base plate (9), an insulating layer (2) is arranged on the outer wall of each bolt (1) to isolate the bolts from the copper columns (4) and the PCB (3), and round grooves (13) are formed in one ends, close to the aluminum base plate (9), of the copper columns (4);

a plurality of positioning mechanisms are further arranged between the PCB (3) and the aluminum substrate (9), the positioning mechanisms are arranged among the copper columns (4) and do not interfere with the copper columns, and a plurality of grooves (10) which are uniformly distributed are formed in one end, close to the aluminum substrate (9), of the aluminum bottom plate (11);

the diameter of the copper column (4) is (2) times that of the bolt (1), and the distance from the inner wall of the circular groove (13) to the outer wall of the bolt (1) is not less than 2mm;

the positioning mechanism comprises a first positioning seat (5) and a second positioning seat (8) which are respectively and correspondingly arranged on the PCB (3) and the aluminum substrate (9), and a first base plate (6) and a second base plate (7) are respectively arranged at the mutually approaching ends of the first positioning seat (5) and the second positioning seat (8).

2. The electric vehicle ac motor controller printed board of claim 1, wherein: the first positioning seat (5) and the second positioning seat (8) are respectively non-conductive plastic cylindrical blocks, and the first base plate (6) and the second base plate (7) are made of metal materials which are not easy to deform and have good stability.

3. The electric vehicle ac motor controller printed board of claim 2, wherein: the aluminum bottom plate (11) is provided with a threaded hole (12) at the position corresponding to the copper column (4), and the bolt (1) penetrates through the copper column (4) to be in threaded fit with the threaded hole (12).

4. An electric vehicle ac motor controller printed board as set forth in claim 3 wherein: the depth of the groove (10) is not more than one half of the thickness of the aluminum bottom plate (11).

5. The electric vehicle ac motor controller printed board of claim 4, wherein: the distance between adjacent grooves (10) is not less than 3mm.