CN218301221U - Electric power electronic box integrated with nanocrystalline magnetic ring - Google Patents
Electric power electronic box integrated with nanocrystalline magnetic ring Download PDFInfo
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- CN218301221U CN218301221U CN202221838012.8U CN202221838012U CN218301221U CN 218301221 U CN218301221 U CN 218301221U CN 202221838012 U CN202221838012 U CN 202221838012U CN 218301221 U CN218301221 U CN 218301221U
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Abstract
The utility model discloses an electric power electronic box of integrated nanocrystalline magnetic ring, including the electric power electronic box body, still include the magnetic ring structure, the magnetic ring structrual installation in the electric power electronic box body, the magnetic ring structure includes shell, nanocrystalline magnetic ring, first nut insert, second nut insert, first fixed screw and second fixed screw, one side that the electric power electronic box body was kept away from to the shell is equipped with the installation slot part, the nanocrystalline magnetic ring install in the installation slot part. The utility model discloses an electric power electronic box of integrated nanocrystalline magnetic ring, its independent nanocrystalline magnetic ring of installation on electric power electronic box's machine controller to have high magnetic permeability through the nanocrystalline magnetic ring, the wide characteristics of frequency characteristic can restrain full frequency channel common mode noise, can effectively improve the EMI effect of PEB controller.
Description
Technical Field
The utility model belongs to the power electronic box, concretely relates to power electronic box of integrated nanocrystalline magnetic ring.
Background
In the electric drive power assembly of the new energy automobile, a motor controller controls and drives a motor to operate through power modules such as an IGBT (insulated gate bipolar transistor), and the like, and the high working frequency of the power modules determines that electromagnetic filtering needs to be carried out in a certain frequency range through a filtering device, so that the good EMC (Electro Magnetic Compatibility) performance, namely the electromagnetic Compatibility performance of the electric drive system is ensured. With the development of electric vehicles, the requirement of electromagnetic compatibility is also higher and higher.
In order to improve the performance of electromagnetic compatibility, the current solution is to add a magnetic ring inside a PEB (power electronic box), and the installation position of the magnetic ring has a direct influence on reducing electromagnetic interference, so that a proper installation position needs to be selected after continuous testing. It is also necessary to make an insulation process or reserve a sufficient insulation gap. And a proper fixing mode needs to be designed in order to adapt to the vehicle-mounted working environment.
The problems of the technology are as follows:
firstly, the magnetic ring is added in the filter, the size of the filter is increased, a proper installation position needs to be designed in the controller, and the requirement on the space in the controller is relatively large.
Secondly, because the magnetic ring and the filter are designed in an integrated manner, the size of the magnetic ring needs to be adjusted continuously in the development and test processes to improve the electromagnetic interference, which is very difficult, the components need to be redeveloped, and the development period is long.
Thirdly, since each PEB has a different internal structure, the magnetic ring needs to be redeveloped and integrated for different internal mechanisms. The research and development expense and the die expense are increased, and the product cost is increased by more than 10 percent.
Therefore, the above problems are further improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective is providing an electric power electronic box of integrated nanocrystalline magnetic ring, its independent nanocrystalline magnetic ring of installation on electric power electronic box's machine controller to have high magnetic permeability through the nanocrystalline magnetic ring, frequency characteristic wide characteristics can restrain full frequency channel common mode noise, can effectively improve the EMI effect of PEB controller.
In order to achieve the above object, the utility model provides an electric power electronic box of integrated nanocrystalline magnetic ring, including the electric power electronic box body, still include the magnetic ring structure, the magnetic ring structrual installation in the electric power electronic box body, the magnetic ring structure includes (plastics) shell, nanocrystalline magnetic ring, first nut inserts, second nut inserts, first fixed screw and second fixed screw, wherein:
the side, far away from the power electronic box body, of the shell is provided with an installation groove part, and the nanocrystalline magnetic ring is installed in the installation groove part;
the shell is further provided with a first through hole, a second through hole and a third through hole, a three-phase copper bar of the power electronic box body penetrates through the first through hole (provided with a U-phase copper bar), the second through hole (provided with a V-phase copper bar) and the third through hole (provided with a W-phase copper bar) respectively, and the installation groove part and the nanocrystalline magnetic ring surround the first through hole, the second through hole and the third through hole (so that the three-phase copper bar is surrounded);
a first mounting hole and a second mounting hole are formed in one side, close to the power electronic box body, of the shell, the first nut insert is mounted in the first mounting hole, and the second nut insert is mounted in the second mounting hole (the nut insert is pre-embedded in the mounting hole, so that the nut insert and the plastic shell are integrally formed in an injection molding mode);
the first fixing screw penetrates through the power electronic box body to be fixedly connected with the first nut insert, and the second fixing screw penetrates through the power electronic box body to be fixedly connected with the second nut insert.
As a further preferable technical solution of the above technical solution, silica gel and epoxy resin are provided between the mounting groove portion and the nanocrystalline magnet ring.
As a further preferred technical scheme of the above technical scheme, a first limiting hole is arranged around the first mounting hole, a second limiting hole is arranged around the second mounting hole, the power electronic box body is provided with a first limiting block and a second limiting block, the first limiting block is installed in the first limiting hole, and the second limiting block is installed in the second limiting hole.
As a further preferable technical solution of the above technical solution, the housing is provided with an anti-slip structure (an anti-slip pattern structure is provided on an outer side).
As a further preferable technical scheme of the above technical scheme, the three-phase copper bar includes a U-phase copper bar, a V-phase copper bar and a W-phase copper bar.
The beneficial effects of the utility model are that:
1. the magnetic ring is flexible to adjust, the size of the magnetic ring can be increased or reduced according to different EMC requirements, the fixing mode does not need to be changed, and the existing structural design of the controller can be influenced less.
2. The structure is compact, and the magnetic ring and the installation structure thereof are not required to be added in the inner space of the PEB which is already narrow. Since the internal space of the PEB is not occupied. The overall size of the PEB can be made more compact.
3. The compatibility is strong, and the installation of a magnetic ring can be increased or cancelled according to the EMC test result and the requirements of the EMC of the whole vehicle, so that the existing structural scheme of the PEB cannot be influenced.
4. The environment suitability is strong, and the nanocrystalline magnetic ring uses encapsulating material fixed, can play dustproof, grease-proof effect moreover.
5. The cost advantage, because adopt independent external installation mode, also convenient compatible PEB controller of different styles has saved the development expense and the mould expense of magnetic ring shell.
Drawings
Fig. 1 is a schematic structural diagram of a power electronic box integrated with a nanocrystalline magnetic ring according to the present invention.
Fig. 2 is a schematic structural diagram of a power electronic box body of a power electronic box integrated with a nanocrystalline magnetic ring according to the present invention.
Fig. 3A is a schematic structural diagram of an outer shell of a power electronic box integrated with a nanocrystalline magnetic ring according to the present invention.
Fig. 3B is a schematic structural diagram of an outer shell of the power electronic box integrated with the nanocrystalline magnetic ring according to the present invention.
Fig. 4 is a partially enlarged view of the area a in fig. 2.
Fig. 5 is an exploded view of the power electronic box integrated with the nanocrystalline magnetic ring according to the present invention.
The reference numerals include: 100. a power electronics box body; 110. a three-phase copper bar; 120. a first stopper; 130. a second limiting block; 200. a magnetic ring structure; 210. a housing; 211. mounting a groove part; 212. a first through hole; 213. a second through hole; 214. a third through hole; 215. a first mounting hole; 216. a second mounting hole; 217. a first limiting hole; 218. a second limiting hole; 220. a nanocrystalline magnetic ring; 230. a first nut insert; 240. a second nut insert; 250. a first fixing screw; 260. and a second fixing screw.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
The utility model discloses an integrated nanocrystalline magnetic ring's power electronic box, below combine preferred embodiment, further describe utility model's concrete embodiment.
In the embodiments of the present invention, those skilled in the art will note that the power electronic box body and the motor controller of the present invention can be regarded as the prior art.
Preferred embodiments.
The utility model discloses an electric power electronic box of integrated nanocrystalline magnetic ring, including electric power electronic box body 100, still include magnetic ring structure 200, magnetic ring structure 200 install in electric power electronic box body 100, magnetic ring structure 200 includes (plastics) shell 210, nanocrystalline magnetic ring 220, first nut inserts 230, second nut inserts 240, first fixed screw 250 and second fixed screw 260, wherein:
a mounting groove part 211 is arranged on one side of the housing 200 far away from the power electronic box body 100, and the nanocrystalline magnetic ring 200 is mounted in the mounting groove part 211;
the shell 210 is further provided with a first through hole 212, a second through hole 213 and a third through hole 214, the three-phase copper bar 110 of the power electronic box body 100 respectively penetrates through the first through hole 212 (for mounting a U-phase copper bar), the second through hole 213 (for mounting a V-phase copper bar) and the third through hole 214 (for mounting a W-phase copper bar), and the mounting groove portion 211 and the nanocrystalline magnetic ring 220 surround the first through hole 212, the second through hole 213 and the third through hole 214 (so as to surround the three-phase copper bar);
a first mounting hole 215 and a second mounting hole 216 are formed in one side, close to the power electronic box body 100, of the housing 210, the first nut insert 230 is mounted in the first mounting hole 215, and the second nut insert 240 is mounted in the second mounting hole 216 (the nut insert is pre-embedded in the mounting hole, so that the nut insert and the plastic housing are integrally injection-molded);
the first fixing screw 250 passes through the power electronics box body 100 and is fixedly connected with the first nut insert 230 and the second fixing screw 260 passes through the power electronics box body 100 and is fixedly connected with the second nut insert 240.
Specifically, silica gel and epoxy resin are disposed between the mounting groove 211 and the nanocrystalline magnetic ring 220.
More specifically, a first limiting hole 217 is formed around the first mounting hole 215, a second limiting hole 218 is formed around the second mounting hole 216, the power electronic box body 100 is provided with a first limiting block 120 and a second limiting block 130, the first limiting block 120 is mounted in the first limiting hole 217, and the second limiting block 130 is mounted in the second limiting hole 218.
Further, the housing 100 is provided with an anti-slip structure (an anti-slip pattern structure is provided on the outer side).
Furthermore, the three-phase copper bar comprises a U-phase copper bar, a V-phase copper bar and a W-phase copper bar.
The principle of the utility model is that:
the nut insert is embedded into the shell and is integrally formed with the plastic shell in an injection molding mode. The nanocrystalline magnetic ring is arranged in the mounting groove of the plastic shell, silica gel is firstly poured to play a role in fixing, then epoxy resin is poured to ensure that the nanocrystalline magnetic ring is embedded in the pouring sealant to play the effects of fixing, dust prevention, water prevention and cooling oil splashing prevention, the shell and the nanocrystalline magnetic ring penetrate through the three-phase copper bar, and fixing screws penetrate through the power electronic box body and are fixedly connected with insert nuts in the plastic shell. Therefore, the magnetic ring structure can be reliably connected and fixed with the controller. The nanocrystalline magnetic ring can restrain common mode noise and improve the EMI effect of the PEB controller.
It is worth mentioning that the utility model discloses a technical characteristics such as power electronic box body and machine controller that the patent application relates to should be regarded as prior art, and the concrete structure of these technical characteristics, theory of operation and the control mode that may involve, spatial arrangement mode adopt the conventional selection in this field can, should not regard as the utility model discloses an invention point is in, the utility model discloses a do not further expand detailed description specifically.
It will be appreciated by those skilled in the art that changes may be made in the embodiments described above, or equivalents may be substituted for some of the features thereof.
Claims (5)
1. The utility model provides an electric power electronic box of integrated nanocrystalline magnetic ring, includes the electric power electronic box body, its characterized in that still includes the magnetic ring structure, the magnetic ring structure install in the electric power electronic box body, the magnetic ring structure includes shell, nanocrystalline magnetic ring, first nut inserts, second nut inserts, first fixed screw and second fixed screw, wherein:
an installation groove part is formed in one side, far away from the power electronic box body, of the shell, and the nanocrystalline magnetic ring is installed in the installation groove part;
the shell is further provided with a first through hole, a second through hole and a third through hole, a three-phase copper bar of the power electronic box body penetrates through the first through hole, the second through hole and the third through hole respectively, and the mounting groove portion and the nanocrystalline magnetic ring surround the first through hole, the second through hole and the third through hole;
a first mounting hole and a second mounting hole are formed in one side, close to the power electronic box body, of the shell, the first nut insert is mounted in the first mounting hole, and the second nut insert is mounted in the second mounting hole;
the first fixing screw penetrates through the power electronic box body to be fixedly connected with the first nut insert, and the second fixing screw penetrates through the power electronic box body to be fixedly connected with the second nut insert.
2. The power electronic box integrated with a nanocrystalline magnetic ring as claimed in claim 1, wherein a silica gel and an epoxy resin are disposed between the installation groove portion and the nanocrystalline magnetic ring.
3. The power electronic box integrated with a nanocrystalline magnetic ring as claimed in claim 2, wherein a first limiting hole is formed around the first mounting hole, a second limiting hole is formed around the second mounting hole, the power electronic box body is provided with a first limiting block and a second limiting block, the first limiting block is mounted in the first limiting hole, and the second limiting block is mounted in the second limiting hole.
4. The power electronic box integrated with a nanocrystalline magnet ring as claimed in claim 3, wherein the casing is provided with an anti-slip structure.
5. The power electronic box integrated with a nanocrystalline magnetic ring as claimed in claim 4, wherein the three-phase copper bar includes a U-phase copper bar, a V-phase copper bar and a W-phase copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221838012.8U CN218301221U (en) | 2022-07-15 | 2022-07-15 | Electric power electronic box integrated with nanocrystalline magnetic ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221838012.8U CN218301221U (en) | 2022-07-15 | 2022-07-15 | Electric power electronic box integrated with nanocrystalline magnetic ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218301221U true CN218301221U (en) | 2023-01-13 |
Family
ID=84790876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221838012.8U Active CN218301221U (en) | 2022-07-15 | 2022-07-15 | Electric power electronic box integrated with nanocrystalline magnetic ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218301221U (en) |
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2022
- 2022-07-15 CN CN202221838012.8U patent/CN218301221U/en active Active
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