CN210274709U - Electromagnetic interference circuit board and uninterrupted power supply comprising same - Google Patents
Electromagnetic interference circuit board and uninterrupted power supply comprising same Download PDFInfo
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- CN210274709U CN210274709U CN201920744762.0U CN201920744762U CN210274709U CN 210274709 U CN210274709 U CN 210274709U CN 201920744762 U CN201920744762 U CN 201920744762U CN 210274709 U CN210274709 U CN 210274709U
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Abstract
The utility model provides an electromagnetic interference circuit board reaches uninterrupted power source including it, the electromagnetic interference circuit board includes: a circuit substrate; a circuit module disposed on the circuit substrate; the customer terminal strip is arranged on the circuit substrate, is positioned on the side edge of the circuit substrate and is parallel to the length direction of the circuit substrate; a row of circuit board terminals disposed on said circuit substrate, said row of circuit board terminals being parallel to and adjacent to said row of customer terminals; and a metal foil array located inside the circuit substrate and configured to be electrically connected to the customer terminal block and the circuit board terminal block. The utility model discloses an electromagnetic interference circuit board has improved uninterrupted power source's EMC performance.
Description
Technical Field
The utility model relates to a circuit board field, concretely relates to electromagnetic interference circuit board reaches uninterrupted power source including it.
Background
With the continuous development and utilization of electromagnetic waves by human beings, people pay more and more attention to the fact that the electromagnetic waves are harmful while benefiting the human beings, and therefore relevant electromagnetic compatibility standards are sequentially regulated.
An Uninterruptible Power Supply (UPS) is an electromagnetic wave emitting source and may generate electromagnetic interference to surrounding environments and equipment. Meanwhile, the control system of the UPS can be interfered by the surrounding electromagnetic environment, so that the UPS is in working failure or even damaged. A high-quality UPS must therefore have good electromagnetic compatibility (EMC) performance.
Fig. 1 is a simplified block diagram of a prior art uninterruptible power supply. Wherein for the sake of simplicity the bypass module in the ups is not shown in fig. 1. As shown in fig. 1, the uninterruptible power supply 1 includes a customer terminal block 11, an electromagnetic interference (EMI) circuit board 12, an input switch 13, an uninterruptible power supply module 14, and an output switch 15. The simplified wiring relationship of the ups 1 is as follows: the power input terminals 111 in the customer terminal block 11 are connected to the input terminals in the board terminal block 121 on the EMI circuit board 12 by wires 161, and the output terminals of the board terminal block 121 are connected to the power output terminals 113 in the customer terminal block 11 by wires 162. The power input terminal 111 is connected to the input of the ups module 14 through a conductor 163, the input switch 13, and a conductor 164 in this order, and the output of the ups module 14 is connected to the power output terminal 113 through a conductor 165, the output switch 15, and a conductor 166 in this order.
In order to improve the EMC performance of the ups 1, magnetic rings 171, 172, 173, 174 are usually added on the wires 161, 162, 163, 166, etc. However, the size and cost of the uninterruptible power supply are increased by the plurality of magnetic rings, so that the cabinet body of the conventional uninterruptible power supply occupies a larger space and is high in cost, and the development trend of miniaturization and low cost of the cabinet body of the uninterruptible power supply is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electromagnetic interference circuit board, include:
a circuit substrate;
a circuit module disposed on the circuit substrate;
the customer terminal strip is arranged on the circuit substrate, is positioned on the side edge of the circuit substrate and is parallel to the length direction of the circuit substrate;
a row of circuit board terminals disposed on said circuit substrate, said row of circuit board terminals being parallel to and adjacent to said row of customer terminals; and
a metal foil array located inside the circuit substrate and configured to be electrically connected to the customer terminal row and the circuit board terminal row.
Preferably, the metal foil array is disposed opposite to the customer terminal block and the circuit board terminal block in a direction perpendicular to the surface of the circuit substrate.
Preferably, the customer terminal block includes a plurality of connection terminals arranged along a length direction of the circuit substrate, the circuit board terminal block includes a plurality of circuit terminals arranged along the length direction of the circuit substrate, the metal foil array includes a plurality of metal foils separated from each other, and each of the plurality of connection terminals is aligned with and connected to one of the plurality of circuit terminals through one of the plurality of metal foils.
Preferably, the plurality of metal foils are located on the same plane inside the circuit substrate, and each of the plurality of metal foils extends from the side edge of the circuit substrate to a middle area of the circuit substrate.
Preferably, each of the plurality of metal foils includes first and second end portions disposed opposite to each other, and an intermediate portion between the first and second end portions, the first end portions of the plurality of metal foils being aligned with the plurality of connection terminals, the intermediate portions of the plurality of metal foils being aligned with the plurality of circuit terminals, and the second end portions of the plurality of metal foils being configured to be electrically connected to the circuit module.
Preferably, each of the plurality of connection terminals includes a conductive connection pad on a surface of the circuit substrate, a plurality of first vias around the conductive connection pad, and a plurality of first metal pillars filled in the plurality of first vias, the plurality of first metal pillars extending toward an interior of the circuit substrate and contacting the array of metal foils.
Preferably, each of the plurality of circuit terminals includes a conductive contact on a surface of the circuit substrate, a plurality of second vias around the conductive contact, and a plurality of second metal pillars filled in the plurality of second vias, the plurality of second metal pillars extending toward an inside of the circuit substrate and contacting the metal foil array.
Preferably, the plurality of connection terminals include in sequence: the battery pack includes three power input terminals configured to receive a three-phase main power, a neutral input terminal, three bypass input terminals configured to receive a three-phase bypass power, a neutral output terminal, three ac output terminals configured to output three-phase ac power, two positive terminals configured to electrically connect with positive poles of the battery, and two negative terminals configured to electrically connect with negative poles of the battery.
Preferably, the plurality of circuit terminals include, in order: three pads configured to be welded with three input switch wires, a detachable wire terminal configured to be detachably connected with an input neutral wire, three detachable wire terminals configured to be detachably connected with three bypass switch wires, a detachable wire terminal configured to be detachably connected with an output neutral wire, three pads configured to be welded with three output switch wires, two detachable wire terminals configured to be detachably connected with a battery positive wire, and two detachable wire terminals configured to be detachably connected with a battery negative wire.
The utility model also provides an uninterrupted power supply, include:
a cabinet body;
the electromagnetic interference circuit board is positioned in the cabinet body;
the input switch and the output switch are positioned in the cabinet body and connected to a circuit board terminal row in the electromagnetic interference circuit board; and
and the uninterrupted power supply module is positioned in the cabinet body and is connected between the input switch and the output switch.
Preferably, the cabinet body comprises an input side plate with a through hole and an input port cover located outside the cabinet body, the client side sub-row in the electromagnetic interference circuit board is located at the through hole of the input side plate, and the input port cover covers the through hole.
The EMI circuit board of the utility model integrates the client terminal strip, thereby omitting the lead between the client terminal strip and the circuit board terminal strip on the EMI circuit board, shortening the conducting path of the lead and improving the EMC performance of the uninterrupted power supply; adopt the utility model discloses an EMI circuit board need not to use the magnetic ring, and the cost is reduced has reduced the volume of the cabinet body.
Drawings
Embodiments of the invention are further described below with reference to the accompanying drawings, in which:
fig. 1 is a simplified block diagram of a prior art uninterruptible power supply.
Fig. 2 is a partial perspective view of an ups according to a preferred embodiment of the present invention.
Fig. 3 is a perspective view of the ups shown in fig. 2 from the top right toward the bottom left with the input side plate and the input port cover removed.
Fig. 4 is a schematic plan view of the EMI circuit board of the ups shown in fig. 3, viewed from top to bottom in the direction of arrow a.
Fig. 5 is a schematic plan view of the internal circuitry of the EMI circuit board shown in fig. 4.
Fig. 6 is a schematic plan view of the EMI circuit board shown in fig. 5 with a portion of the internal circuitry not directly electrically connected to the copper foil array removed.
Fig. 7 is a schematic plan view of the copper foil array in the EMI circuit board of fig. 6.
Fig. 8 is a schematic plan view of the internal circuitry of the EMI circuit board of fig. 6 with the copper foil array of fig. 7 removed.
Fig. 9 is an enlarged partial plan view of the leftmost side of the customer terminal block and the board terminal block shown in fig. 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail by the following embodiments with reference to the accompanying drawings.
Fig. 2 is a partial perspective view of an ups according to a preferred embodiment of the present invention. As shown in fig. 2, the uninterruptible power supply 2 includes a cabinet 20, the cabinet 20 having a substantially rectangular parallelepiped shape, which includes an input side plate 201 having a through hole (not shown in fig. 2) and an input port cover 203 located outside the cabinet 20 and covering the through hole; the ups 2 further includes an EMI circuit board 22 located inside the cabinet 20, and one side of the EMI circuit board 22 is located at the through hole of the input side plate 201.
Fig. 3 is a perspective view of the ups shown in fig. 2 from the top right toward the bottom left with the input side plate and the input port cover removed. As shown in fig. 3, the uninterruptible power supply 2 further includes an input switch 23, a bypass switch 24, and an output switch 25 located inside the cabinet 20, and an uninterruptible power supply module and a bypass module (not shown in fig. 2) located inside the cabinet 20, wherein the circuit topology of the uninterruptible power supply module and the bypass module of the uninterruptible power supply 2 is the same as that of the prior art, and is not described herein again.
The circuit board 220 is preferably a rectangular printed circuit board having a longitudinal direction L. The customer terminal block 21 is located on one side of the circuit substrate 220, and the arrangement direction of the connection terminals in the customer terminal block 21 (i.e., the length direction of the customer terminal block 21) is parallel to the length direction L of the circuit substrate 220. The circuit board terminal block 26 includes a plurality of circuit terminals arranged in the length direction L of the circuit substrate 220, which are configured to be connected to the input switch 23, the bypass switch 24, the output switch 25, the uninterruptible power supply module, and the plurality of pads of the bypass module and the detachable wire terminals by wires. The circuit module 222 is schematically illustrated in fig. 3 as a plurality of rectangular parallelepipeds, and the types, numbers, and wiring patterns of components included therein are designed according to a specific EMI circuit and are not specifically described in this embodiment.
Fig. 4 is a schematic plan view of the EMI circuit board of the ups shown in fig. 3, viewed from top to bottom in the direction of arrow a. As shown in fig. 4, the customer terminal block 21 includes fifteen separate connection terminals, first to third power input terminals configured to receive a three-phase main power, fourth neutral input terminal for electrical connection to an input neutral, fifth to seventh bypass input terminals configured to receive a three-phase bypass power, eighth neutral output terminal for electrical connection to an output neutral, ninth to eleventh alternating current output terminals configured to output a three-phase alternating current, twelfth and thirteenth positive terminals configured to be electrically connected to a positive electrode of the battery, and fourteenth and fifteen negative terminals configured to be electrically connected to a negative electrode of the battery, starting from left to right.
The board terminal block 26 includes fifteen separate circuit terminals, each of which is disposed opposite one of the connection terminals in the customer terminal block 21. Starting from left to right, the first to third are three pads configured to be soldered with three input switch wires; the fourth is a removable wire terminal configured to removably connect to an input neutral wire; fifth to seventh are three detachable lead terminals configured to detachably connect with three bypass switch leads; the eighth is a detachable wire terminal configured to be detachably connected to the output neutral wire; ninth to eleventh are three pads configured to be soldered with three output switch wires; the twelfth and thirteenth are two removable lead terminals configured to removably connect to the battery positive lead; the fourteenth and fifteenth are two detachable conductive terminals configured to detachably connect with the battery negative lead.
Fig. 5 is a schematic plan view of the internal circuitry of the EMI circuit board shown in fig. 4. Fig. 6 is a schematic plan view of the EMI circuit board shown in fig. 5 with a portion of the internal circuitry not directly electrically connected to the copper foil array removed. As shown in fig. 5 and 6, the copper foil array 27 inside the circuit substrate 220 includes a plurality of copper foils and is arranged along the length direction L of the circuit substrate 220. The copper foil array 27 is located below the customer terminal block 21 and the circuit board terminal block 26, and is disposed opposite to the customer terminal block 21 and the circuit board terminal block 26 in a direction perpendicular to the surface of the circuit substrate 220, whereby fig. 6 shows only a portion not covered by the customer terminal block 21 and the circuit board terminal block 26 (see a dashed frame in fig. 6).
As shown in fig. 6, the customer terminal block 21 and the board terminal block 26 are disposed oppositely, and the board terminal block 26 is close to the customer terminal block 21, so that the distance between the customer terminal block 21 and the board terminal block 26 is short.
Fig. 7 is a schematic plan view of the copper foil array in the EMI circuit board of fig. 6. As shown in fig. 7, the copper foil array 27 includes a plurality of separated copper foils arranged along the length direction L of the circuit substrate 220, and the plurality of copper foils are located on the same plane inside the circuit substrate 220. One end of each copper foil is close to the side 2201 of the circuit substrate 220, and the other end extends to the middle area of the circuit substrate 220. The leftmost copper foil 271 in the copper foil array 27 is taken as an example and explained as follows: the copper foil 271 includes first and second oppositely disposed end portions 2711 and 2712, and a middle portion 2713 between the first and second end portions 2711 and 2712. The first end 2711 is close to the side 2201 of the circuit substrate 220, and the second end 2712 is located in the middle area of the inner part of the circuit substrate 220.
Fig. 8 is a schematic plan view of the internal circuitry of the EMI circuit board of fig. 6 with the copper foil array of fig. 7 removed. The leftmost terminal 211 in the client terminal block 21, the leftmost pad 261 in the circuit board terminal block 26, and the leftmost electronic component 2221 in the circuit module 222 are taken as an example and described as follows: the connection terminal 211 is aligned with the first end 2711 (shown in fig. 7) of the copper foil 271 in a direction perpendicular to the surface of the circuit substrate 220; the pad 261 is aligned with the middle part 2713 of the copper foil 271 in a direction perpendicular to the surface of the circuit substrate 220; the leads of the electronic component 2221 are aligned with the second end 2712 of the copper foil 271 in a direction perpendicular to the surface of the circuit substrate 220.
Fig. 9 is an enlarged partial plan view of the leftmost side of the customer terminal block and the board terminal block shown in fig. 8. As shown in fig. 9, the connection terminal 211 includes a generally rectangular conductive connection piece 212 on the surface of the circuit substrate 220, a plurality of vias 213 around the conductive connection piece 212, and a metal pillar (not shown in fig. 9) filled in each of the vias 213, wherein the metal pillar filled in the vias 213 is preferably made of a copper material, extends toward the inside of the circuit substrate 220, and is in contact with a first end 2711 (shown in fig. 7) of the copper foil 271, thereby achieving electrical connection of the connection terminal 211 to the copper foil 271.
The pad 261 includes two generally circular conductive contacts 2611, 2612 on the surface of the circuit substrate 220, a plurality of vias 2613 around the conductive contacts 2611, 2612, and a copper pillar (not shown in fig. 9) filled in each via 2613, wherein the copper pillar filled in the via 2613 extends toward the interior of the circuit substrate 220 and contacts the middle portion 2713 (shown in fig. 7) of the copper foil 271, thereby providing electrical connection of the pad 261 to the copper foil 271.
The present embodiment is described by taking only the leftmost one of the customer terminal block 21, the circuit board terminal block 26 and the copper foil array 27 as an example, however, as can be seen from fig. 6, each of the connection terminals in the customer terminal block 21 is aligned with one of the circuit terminals in the circuit board terminal 27, and the electrical connection is achieved by the copper foil aligned with the connection terminal and the circuit terminal.
The EMI circuit board of the utility model integrates the client terminal strip, and shortens the conductive path between the client terminal strip and the circuit board terminal strip; the customer terminal strip and the circuit board terminal strip are electrically connected through the copper foil array positioned in the circuit substrate, so that the defects that the conducting path of a conducting wire is long and a magnetic ring is needed are overcome, and the size and the cost of the circuit board are reduced; and the copper foil array is positioned in the circuit substrate, and the circuit substrate can perform electromagnetic shielding to a certain extent on the copper foil array in the circuit substrate, so that the electromagnetic interference influence caused by the copper foil is further reduced.
According to the utility model discloses, circuit board terminal row is on a parallel with and is close to customer's terminal row and arranges, is favorable to the circuit substrate miniaturization, and can reduce the size or the length of arranging at the first end and the middle part of the inside copper foil of circuit substrate, reduces the use amount of copper product material to and reduce the conductive path between circuit board terminal row and the corresponding customer's terminal row, thereby improve EMC performance.
According to the utility model, any one of the circuit terminals on the circuit board terminal row is aligned with one of the wiring terminals in the client terminal row, on one hand, the copper foil array for electrically connecting the wiring terminals and the circuit terminals can be arranged on the same plane in the circuit substrate, thereby reducing the manufacturing cost of the copper foil array; on the other hand makes things convenient for operating personnel or engineer to pass through the wire with a plurality of circuit terminals on the circuit board terminal row and is connected with the components and parts electricity in uninterrupted power source module and the bypass module, avoids the malassembly.
The present invention is not intended to limit the number of terminals in a customer terminal row. In other embodiments of the present invention, the number of connection terminals in the customer terminal row is designed according to the type of the uninterruptible power supply and the circuit connection relationship.
The present invention is not intended to be limited to the number and shape of pads in the circuit board terminal rows and the detachable wire terminals. In other embodiments of the present invention, any combination of pads and detachable wire terminals may be selected for the circuit board terminal row.
Although the present invention has been described in connection with the preferred embodiments, it is not intended to limit the invention to the embodiments described herein, but rather, to include various changes and modifications without departing from the scope of the invention.
Claims (11)
1. An electromagnetic interference circuit board, comprising:
a circuit substrate;
a circuit module disposed on the circuit substrate;
the customer terminal strip is arranged on the circuit substrate, is positioned on the side edge of the circuit substrate and is parallel to the length direction of the circuit substrate;
a row of circuit board terminals disposed on said circuit substrate, said row of circuit board terminals being parallel to and adjacent to said row of customer terminals; and
a metal foil array located inside the circuit substrate and configured to be electrically connected to the customer terminal row and the circuit board terminal row.
2. The EMI circuit board of claim 1, wherein said metal foil array is disposed opposite said customer terminal row and said circuit board terminal row in a direction perpendicular to a surface of said circuit substrate.
3. The EMI circuit board of claim 2, wherein said customer terminal block includes a plurality of connection terminals arranged along a length of said circuit substrate, said circuit board terminal block includes a plurality of circuit terminals arranged along the length of said circuit substrate, said metal foil array includes a plurality of metal foils separated from each other, each of said plurality of connection terminals is aligned with and connected by one of said plurality of circuit terminals.
4. The EMI circuit board of claim 3, wherein said plurality of metal foils are located on a same plane inside said circuit substrate, and each of said plurality of metal foils extends from said side edge of said circuit substrate to a middle area of said circuit substrate.
5. The EMI circuit board of claim 4, wherein each of said plurality of metal foils includes first and second oppositely disposed end portions, and a middle portion between said first and second end portions, said first end portions of said plurality of metal foils being aligned with said plurality of terminals, said middle portions of said plurality of metal foils being aligned with said plurality of circuit terminals, said second end portions of said plurality of metal foils being configured to be electrically connected to said circuit module.
6. The EMI circuit board of any one of claims 3-5, wherein each of said plurality of terminals includes a conductive connection pad on a surface of said circuit substrate, a plurality of first vias located around said conductive connection pad, and a plurality of first metal posts filled in said plurality of first vias, said plurality of first metal posts extending toward an interior of said circuit substrate and contacting said array of metal foils.
7. The EMI circuit board of any one of claims 3-5, wherein each of said plurality of circuit terminals includes a conductive contact on a surface of said circuit substrate, a plurality of second vias around said conductive contact, and a plurality of second metal posts filled in said plurality of second vias, said plurality of second metal posts extending toward an interior of said circuit substrate and contacting said array of metal foils.
8. The EMI circuit board as claimed in any one of claims 3 to 5, wherein said plurality of terminals include, in order: the battery pack includes three power input terminals configured to receive a three-phase main power, a neutral input terminal, three bypass input terminals configured to receive a three-phase bypass power, a neutral output terminal, three ac output terminals configured to output three-phase ac power, two positive terminals configured to electrically connect with positive poles of the battery, and two negative terminals configured to electrically connect with negative poles of the battery.
9. The EMI circuit board of claim 8, wherein said plurality of circuit terminals comprise, in order: three pads configured to be welded with three input switch wires, a detachable wire terminal configured to be detachably connected with an input neutral wire, three detachable wire terminals configured to be detachably connected with three bypass switch wires, a detachable wire terminal configured to be detachably connected with an output neutral wire, three pads configured to be welded with three output switch wires, two detachable wire terminals configured to be detachably connected with a battery positive wire, and two detachable wire terminals configured to be detachably connected with a battery negative wire.
10. An uninterruptible power supply, comprising:
a cabinet body;
the electromagnetic interference circuit board of any one of claims 1 to 9, located in the cabinet;
the input switch and the output switch are positioned in the cabinet body and connected to a circuit board terminal row in the electromagnetic interference circuit board; and
and the uninterrupted power supply module is positioned in the cabinet body and is connected between the input switch and the output switch.
11. The uninterruptible power supply of claim 10, wherein the cabinet includes an input side plate having a through hole and an input port cover located outside the cabinet, wherein the customer end sub-row of the emi circuit board is located at the through hole of the input side plate, and the input port cover covers the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744762.0U CN210274709U (en) | 2019-05-22 | 2019-05-22 | Electromagnetic interference circuit board and uninterrupted power supply comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744762.0U CN210274709U (en) | 2019-05-22 | 2019-05-22 | Electromagnetic interference circuit board and uninterrupted power supply comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210274709U true CN210274709U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920744762.0U Active CN210274709U (en) | 2019-05-22 | 2019-05-22 | Electromagnetic interference circuit board and uninterrupted power supply comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210274709U (en) |
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2019
- 2019-05-22 CN CN201920744762.0U patent/CN210274709U/en active Active
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