CN114759892A - Integrated filtering structure of electric automobile - Google Patents
Integrated filtering structure of electric automobile Download PDFInfo
- Publication number
- CN114759892A CN114759892A CN202210264580.XA CN202210264580A CN114759892A CN 114759892 A CN114759892 A CN 114759892A CN 202210264580 A CN202210264580 A CN 202210264580A CN 114759892 A CN114759892 A CN 114759892A
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- circuit board
- filter
- power
- integrated
- main power
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
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Abstract
The invention discloses an integrated filtering structure of an electric automobile, which comprises a shell, and a main power circuit board, a filtering circuit board, a power switching circuit board and a wireless cable connector which are integrated on the shell, wherein a value containing cavity is arranged in the shell, at least one positioning column and a first mounting hole are arranged in the value containing cavity, the filtering circuit board is installed in the value containing cavity, the power switching circuit board is installed above the filtering circuit board through the positioning column and the first mounting hole, a positioning structure is arranged on one surface of the power switching circuit board, which faces away from the filtering circuit board, the main power circuit board is installed on the power switching circuit board through the positioning structure, an installation surface is arranged on the outer wall of the shell, and the wireless cable connector is installed on the installation surface. Compared with the prior art, the invention reduces the installation space requirement by 50 percent, reduces the material cost and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of pure electric and hybrid electric vehicle charging, in particular to an integrated filtering structure of an electric vehicle.
Background
The existing integrated filter structure generally divides a shell into an upper cavity and a lower cavity, a filter circuit board and a main power circuit board are respectively installed on the upper cavity and the lower cavity, a cable connector is connected with the filter circuit board through a cable, the filter circuit board is connected with the main power circuit board through a switching copper bar, and an upper cover plate and a lower cover plate are installed on the shell to meet the protection grade requirements of products.
This connection has the following problems:
1. the product size is large, and the material cost is high;
2. the front and back of the product have installation requirements, the production process is complex, and the production efficiency is low.
Therefore, how to design an integrated filtering structure for an electric vehicle can improve the above problems and reduce the product size is an urgent technical problem to be solved in the industry.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an integrated filtering structure.
The technical scheme includes that the integrated filtering structure of the electric automobile comprises a shell, and a main power circuit board, a filtering circuit board, a power switching circuit board and a wireless cable connector which are integrated on the shell, wherein a value containing cavity is formed in the shell, at least one positioning column and a first mounting hole are formed in the value containing cavity, the filtering circuit board is mounted in the value containing cavity, the power switching circuit board is mounted above the filtering circuit board through the positioning column and the first mounting hole, a positioning structure is arranged on one surface of the power switching circuit board, which faces away from the filtering circuit board, the main power circuit board is mounted on the power switching circuit board through the positioning structure, a mounting surface is arranged on the outer wall of the shell, and the wireless cable connector is mounted on the mounting surface.
Further, the filter circuit board comprises a filter capacitor circuit board and a filter inductor circuit board, and at least one filter capacitor and a filter capacitor shielding case for packaging the filter capacitor are integrated on the filter capacitor circuit board;
the filter inductor circuit board is integrated with at least one filter inductor and a switching copper bar, and the filter inductor and the switching copper bar are installed on two opposite surfaces of the filter inductor circuit board.
Furthermore, a plurality of jacks are arranged on the power switching circuit board, at least one first pin is arranged on one side surface of the filter capacitor circuit board, the filter capacitor circuit board is vertically arranged, and the first pin is matched with the jacks to electrically connect the filter capacitor circuit board and the power switching circuit board.
Furthermore, the filter inductor is arranged on one side, back to the power switching circuit board, of the filter inductor circuit board, the switching copper bar is arranged on one side, facing towards the power switching circuit board, of the filter inductor circuit board, the switching copper bar is vertically arranged on the filter inductor circuit board, at least one second pin is arranged on one side, facing towards the power switching circuit board, of the switching copper bar, and the second pin is matched with the jack to be electrically connected with the filter inductor circuit board and the power switching circuit board.
Furthermore, the mounting surface is annular, a notch matched with the housing is formed in the annular opening of the housing, the wireless cable connector comprises a connecting table used for connecting a main power circuit board, at least one second mounting hole is formed in the mounting surface, the wireless cable connector is mounted on the mounting surface through the second mounting hole, and the connecting table is placed in the accommodating cavity through the notch.
Furthermore, the power switching circuit board is provided with at least one welding hole near the connecting table, and the wireless cable connector realizes the electric connection between the power switching circuit board and the connecting table through the welding hole and by adopting a secondary selective welding process.
Further, still including locating power switching circuit board with main power shield cover and the insulating piece between the main power circuit board, the insulating piece lid is located on the power switching circuit board, and avoid location structure sets up, the shape of main power shield cover with the insulating piece matches, and is in be equipped with the third mounting hole of mutual matching on main power shield cover and the power switching circuit board.
Furthermore, the positioning structure comprises a power connecting column and a signal connecting pin, and the main power circuit board is arranged on the power switching circuit board through the power connecting column and the signal connecting pin.
And the shell is provided with at least one fourth mounting hole for fixing the cover plate.
Further, the cover plate and the shell are sealed through dispensing.
Compared with the prior art, the invention has at least the following beneficial effects:
the filter circuit board is designed in an integrated manner, so that the requirement on installation space is reduced by 50%, the material cost is reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described 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 based on these drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the housing of the present invention;
FIG. 3 is a schematic view of the installation of the wireless cable connector of the present invention;
FIG. 4 is a schematic diagram of a filter capacitor circuit board according to the present invention;
FIG. 5 is a schematic diagram of a filter inductor circuit board according to the present invention;
FIG. 6 is a schematic diagram of the connection between the filter circuit board and the power adapter circuit board according to the present invention;
FIG. 7 is a schematic view of the power adapter circuit board of the present invention;
FIG. 8 is a schematic view of the installation of the insulating sheet of the present invention;
FIG. 9 is a schematic view of the installation of the main power shield of the present invention;
FIG. 10 is a schematic view of the mounting of the main power circuit board of the present invention;
FIG. 11 is a schematic view of the installation of the cover plate of the present invention;
the module comprises a cover plate 1, an opening 11, a shell 2, a glue pouring retaining wall 21, a positioning column 22, a first mounting hole 23, a fifth mounting hole 24, a mounting surface 25, a second mounting hole 26, a fourth mounting hole 27, a wireless cable connector 3, a connecting table 31, a power switching circuit board 4, a welding hole 41, a power connecting column 42, a signal connecting pin 43, a filter capacitor circuit board 5, a filter capacitor 51, a first pin 52, a filter inductor circuit board 6, a switching copper bar 61, a filter inductor 62, a second pin 63, a third pin 64, a filter capacitor shielding cover 7, a main power shielding cover 8, a third mounting hole 81, an insulating sheet 9 and a main power circuit board 10.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
The existing integrated filtering mode is that a shell is divided into an upper shell and a lower shell, a filtering circuit board and a main power circuit board are respectively installed, then a cable connector is connected with the filtering circuit board through a cable, the filtering circuit board is connected with the main power circuit board through a connecting copper bar, and an upper cover plate and a lower cover plate are installed on the shell to meet the protection grade requirement of a product. However, by adopting the mode, the size of the product is large, the material cost is high, the front and back surfaces of the product have assembly requirements, the production process is complex, and the production efficiency is low. The invention provides an integrated filtering structure of an electric automobile, which integrates all parts into a shell, and saves at least half of the requirement on installation space, thereby reducing material cost and improving production efficiency.
Referring to fig. 1, the integrated filter structure of an electric vehicle according to the present invention includes a housing 2, and a main power circuit board 10, a filter circuit board, a power transfer circuit board 4 and a wireless cable connector 3 integrated on the housing, specifically, a receiving cavity is disposed in the housing 2, at least one positioning pillar 22 and a first mounting hole 23 are disposed in the receiving cavity, the filter circuit board is mounted in the receiving cavity while avoiding the positioning pillar 22 and the first mounting hole 23, and then the power transfer circuit board 4 is mounted through the positioning pillar 22 and the first mounting hole 23, wherein the positioning pillar 22 and the first mounting hole 23 can be disposed on the periphery of the filter circuit board, so that the power transfer circuit board 4 is mounted above the filter circuit board, a positioning structure is disposed on a side of the power transfer circuit board 4 opposite to the filter circuit board, the main power circuit board 10 is mounted on the power transfer circuit board 4 through the positioning structure, a mounting surface 25 is provided on the outer wall of the housing 2, and the wireless power connector 3 is mounted on the mounting surface 25.
Through the design mode, the main power circuit board 10, the filter circuit board, the power switching circuit board 4 and the wireless cable connector 3 can be integrated on one shell, an upper shell and a lower shell do not need to be additionally arranged, at least half of the requirement on installation space is saved, and the use of materials is reduced. The mounting surface 25, the positioning column 22, the first mounting hole 23, the fourth mounting hole 27 and the fifth mounting hole 24 which are arranged on the shell 2 are all processed by a numerical control machine tool, so that the processing precision is improved, and the automatic equipment assembly of all devices is ensured.
Referring to fig. 4 and 5, the filter circuit board includes a filter capacitor circuit board 5 and a filter inductor circuit board 6, and at least one filter capacitor 51 and a filter capacitor shielding cover 7 for enclosing the filter capacitor 51 are integrated on the filter capacitor circuit board 5; at least one filter inductor 62 and a switching copper bar 61 are integrated on the filter inductor circuit board 6, and the filter inductor 62 and the switching copper bar 61 are installed on two opposite surfaces of the filter inductor circuit board 6;
specifically, referring to fig. 4, a plurality of jacks are formed in the power adapter circuit board 4, at least one first pin 52 is formed on one side surface of the filter capacitor circuit board 5, the first pin 52 can be matched with the jacks to electrically connect the power adapter circuit board 4 and the filter capacitor circuit board 5, and fix the filter capacitor circuit board 5, when the filter capacitor circuit board 5 is installed, the first pin 52 is vertically arranged, and is arranged toward the power adapter circuit board 4, and then the first pin 52 and the jacks are assembled, so that the filter capacitor circuit board 5 is electrically connected with the power adapter circuit board 4. The filter capacitor shielding cover 7 is made of metal materials and used for fixing and shielding the filter capacitor 51, vibration resistance requirements of the filter capacitor 51 are improved, and the setting requirements of dispensing of the conventional filter capacitor 51 are replaced.
Referring to fig. 5, the filter inductor 62 is disposed on a side of the filter inductor circuit board 6 opposite to the power adapting circuit board 4, so that the adapting copper bar 61 is disposed on a side of the filter inductor circuit board 6 facing the power adapting circuit board 4, the adapting copper bar 61 is vertically mounted on the filter inductor circuit board 6, at least one second pin 63 is disposed on a side of the adapting copper bar 61 facing the power adapting circuit board 4, and the second pin 63 is engaged with a jack on the power adapting circuit board 4 during mounting, so as to electrically connect and fix the filter inductor circuit board 6 and the power adapting circuit board 4. The connection mode of the switching copper bar 61 and the filter inductance circuit board 6 can be welding, or the matching mode of the jack and the pin, and only the reliability of the electrical connection and fixation between the switching copper bar 61 and the filter inductance circuit board 4 needs to be ensured; a plurality of third pins 64 are arranged on the filter inductor 62, a plurality of jacks matched with the filter inductor are arranged on the filter inductor circuit board 6, and the filter inductor 62 is mounted on the filter inductor circuit board 6 through the third pins 64, so that the filter inductor 62 and the filter inductor are electrically connected, and the filter inductor 62 is fixed. The switching copper bar 61 can change the connection position of the filter inductor circuit board 6 and the power switching circuit board 4, and increase the size in the height direction, so that devices can be arranged in the height direction space between the filter inductor circuit board 6 and the power switching circuit board 4, and the space utilization rate is improved.
Referring to fig. 1 and fig. 2, a glue-pouring retaining wall 21 is further disposed on the housing 2, and separates the filter capacitor circuit board 5 from the filter inductor circuit board 6, so as to dissipate heat of the filter inductor on the filter inductor circuit board 6 and perform a shielding function.
Referring to fig. 2 and 3, the mounting surface 25 is annular, and the housing 2 has a notch at an annular opening, the wireless cable connector 3 includes a connecting platform 31 for connecting the main power circuit board 10, at least one second mounting hole 26 is provided on the mounting surface 25, the wireless cable connector 3 is mounted on the mounting surface 25 through the second mounting hole 26, and the connecting platform 31 is disposed in the accommodating cavity through the notch, so as to facilitate the connection between the wireless cable connector 3 and the main power circuit board 10.
Compared with a wired cable connector, the wireless cable connector 3 reduces the installation space, shortens the installation distance with other circuit boards, and is beneficial to the improvement of EMC performance.
Referring to fig. 3 and 7, the power adapter circuit board 4 is installed in the accommodating cavity, a plurality of soldering holes 41 are formed in the position of the power adapter circuit board 4 close to the connecting stage 31, a plurality of signal pins are arranged on the connecting stage 31 and inserted into the soldering holes 41, so as to electrically connect the wireless cable connector 3 and the power adapter circuit board 4, wherein the signal pins on the connecting stage 31 are connected with the soldering holes 41 through a secondary selective soldering process, thereby achieving good fixing and electrical connection effects. Through the design mode, the arrangement of a cable between the wireless cable connector 3 and the power switching circuit board 4 can be completely eliminated, and the design cost of the wireless cable connector 3 is greatly reduced.
Referring to fig. 1, 8 and 9, a main power shielding cover 8 and an insulating sheet 9 are disposed between the power adapting circuit board 4 and the main power circuit board 10, and are mounted on a surface of the power adapting circuit board 4 facing away from the filter circuit board, the insulating sheet 9 is first covered on the power adapting circuit board 4 and is disposed avoiding the positioning structure thereon, the shape of the main power shielding cover 8 is matched with the insulating sheet 9 and is mounted above the insulating sheet 9, and third mounting holes 81 matched with each other are further disposed on the main power shielding cover 8 and the power adapting circuit board 4, so as to fix the main power shielding cover 8 and the insulating sheet 9. The main power shielding cover 8 is used for isolating the power switching circuit board 4 from the main power circuit board 10, and is beneficial to EMC performance, the insulating sheet 9 has the function of insulation and pressure resistance, the installation distance between the power switching circuit board 4 and the main power circuit board 10 can be reduced, the space utilization rate is improved, and the requirement of insulation and pressure resistance under the condition of insufficient gap of an electric appliance is met.
Referring to fig. 8, 9 and 10, the positioning structure includes a power connection post 42 and a signal connection pin 43, and the main power circuit board 10 is mounted on the power adapter circuit board 4 through the power connection post 42 and the signal connection pin 43, so as to electrically connect and fix the main power circuit board 10 and the power adapter circuit board 4. The power connection column 42 and the signal connection pin 42 realize the circuit connection of the main power circuit 10 and the power switching circuit board 4 in the height direction, so that the space utilization rate of the length, the width and the height direction of the shell reaches more than 80%, and the effects of reducing the product volume and the material cost are achieved.
Referring to fig. 2, 9 and 10, a fifth mounting hole 24 is further formed in the accommodating cavity, the height of the fifth mounting hole 24 is higher than that of the positioning column 22 and the first mounting hole 23, when the power adapter circuit board 4 is mounted on the positioning column 22 and the first mounting hole 23, the fifth mounting hole 24 is avoided, so that the fifth mounting hole 24 can be exposed out of the power adapter circuit board 4, and when the main power circuit board 10 is mounted, the connection reliability of the main power circuit board 10 can be further enhanced by the fifth mounting hole 24.
Referring to fig. 2 and 11, at least one fourth mounting hole 27 is further formed in the outer wall of the housing 2, the opening 11 matched with the fourth mounting hole 27 is formed in the cover plate 1, and after the main power circuit board 10 is mounted, the cover plate 1 is mounted through the fourth mounting hole 27 and the opening 11, so that the purpose of packaging and protecting the filter circuit board, the power switching circuit board 4 and the main power circuit board 10 is achieved. In order to satisfy the sealing effect between the cover plate 1 and the shell 2, glue is dispensed between the cover plate 1 and the shell 2.
Compared with the prior art, the invention integrates the main power circuit board, the filter circuit board, the power switching circuit board and the wireless cable connector on one shell, the circuit boards are tightly connected, the space utilization rate is high, the wireless cable connector cancels the arrangement of cables, and the installation space requirement of the device is reduced by at least 50 percent integrally, thereby achieving the purposes of reducing the material cost and improving the production efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The integrated filtering structure of the electric automobile comprises a shell, and a main power circuit board, a filtering circuit board, a power switching circuit board and a wireless cable connector which are integrated on the shell, and is characterized in that a value containing cavity is arranged in the shell, at least one positioning column and a first mounting hole are arranged in the value containing cavity, the filtering circuit board is mounted in the value containing cavity, the power switching circuit board is mounted above the filtering circuit board through the positioning column and the first mounting hole, a positioning structure is arranged on one surface, back to the filtering circuit board, of the power switching circuit board, the main power circuit board is mounted on the power switching circuit board through the positioning structure, a mounting surface is arranged on the outer wall of the shell, and the wireless cable connector is mounted on the mounting surface.
2. The electric vehicle integrated filter structure according to claim 1, wherein the filter circuit board comprises a filter capacitor circuit board and a filter inductor circuit board, and at least one filter capacitor and a filter capacitor shielding case for packaging the filter capacitor are integrated on the filter capacitor circuit board;
the filter inductor circuit board is integrated with at least one filter inductor and a switching copper bar, and the filter inductor and the switching copper bar are installed on two opposite surfaces of the filter inductor circuit board.
3. The integrated filter structure of claim 2, wherein the power adapter circuit board has a plurality of insertion holes, and the filter capacitor circuit board has at least one first pin on one side, and the filter capacitor circuit board is vertically disposed, and the first pin is engaged with the insertion hole to electrically connect the filter capacitor circuit board and the power adapter circuit board.
4. The integrated filter structure of claim 2, wherein the filter inductor is disposed on a side of the filter inductor circuit board facing away from the power adapter circuit board, the adapter copper bar is disposed on a side of the filter inductor circuit board facing the power adapter circuit board, the adapter copper bar is vertically disposed on the filter inductor circuit board, and a side of the adapter copper bar facing the power adapter circuit board is provided with at least one second pin, and the second pin is engaged with the insertion hole to electrically connect the filter inductor circuit board and the power adapter circuit board.
5. The integrated filtering structure of claim 1, wherein the mounting surface is annular, and the housing has a notch at an opening of the annular shape, the wireless cable connector includes a connecting platform for connecting a main power circuit board, the mounting surface has at least one second mounting hole, and the wireless cable connector is mounted on the mounting surface through the second mounting hole, such that the connecting platform is disposed in the receiving cavity through the notch.
6. The integrated filtering structure of claim 5, wherein the power adapter circuit board is provided with at least one soldering hole near the connection platform, and the wireless cable connector is electrically connected to the connection platform through the soldering hole by a secondary selective soldering process.
7. The integrated filter structure of claim 1, further comprising a main power shielding cover and an insulating plate disposed between the power adapter circuit board and the main power circuit board, wherein the insulating plate covers the power adapter circuit board and avoids the positioning structure, the shape of the main power shielding cover matches the insulating plate, and third mounting holes are disposed on the main power shielding cover and the power adapter circuit board.
8. The electric vehicle integrated filter structure according to claim 7, wherein the positioning structure comprises a power connection post and a signal connection pin, and the main power circuit board is mounted on the power adapter circuit board through the power connection post and the signal connection pin.
9. The integrated filter structure of an electric vehicle according to claim 1, further comprising a cover plate for enclosing the main power circuit board, wherein at least one fourth mounting hole for fixing the cover plate is further provided on the outer wall of the housing.
10. The integrated filter structure of claim 9, wherein the cover plate is sealed with the housing by dispensing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264580.XA CN114759892A (en) | 2022-03-17 | 2022-03-17 | Integrated filtering structure of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264580.XA CN114759892A (en) | 2022-03-17 | 2022-03-17 | Integrated filtering structure of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114759892A true CN114759892A (en) | 2022-07-15 |
Family
ID=82326494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210264580.XA Pending CN114759892A (en) | 2022-03-17 | 2022-03-17 | Integrated filtering structure of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114759892A (en) |
-
2022
- 2022-03-17 CN CN202210264580.XA patent/CN114759892A/en active Pending
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