CN112034938A

CN112034938A - UPS power supply and case with magnetic shielding function

Info

Publication number: CN112034938A
Application number: CN202010790753.2A
Authority: CN
Inventors: 胡双平; 谭显红; 江日升; 莫权谋
Original assignee: Dongguan Shuoqing Energy Technology Co ltd
Current assignee: Dongguan Shuoqing Energy Technology Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-12-04

Abstract

The invention provides a UPS (uninterrupted power supply), which comprises a case and a transformer arranged in the case, wherein the transformer generates a magnetic field, the case comprises a cover plate made of a material attracted by the magnetic field, a gap is reserved between the transformer and the cover plate, the UPS also comprises a shielding plate for shielding the magnetic field, the shielding plate is arranged between the transformer and the cover plate, and the direction of the magnetic field passes through the shielding plate and the cover plate. The shielding plate is arranged between the local case attracted by the magnetic field and the transformer to shield the magnetic field, so that the magnetic field generated by the transformer is prevented from influencing the case to generate vibration, the UPS power supply is further prevented from generating noise during working, and the service life of the case is also prevented from being shortened due to the vibration of the case.

Description

UPS power supply and case with magnetic shielding function

Technical Field

The invention relates to the field of power supplies, in particular to a UPS (uninterrupted power supply) with a magnetic shielding function and a case.

Background

The UPS Power Supply (UPS) includes a case, and a transformer and an electronic device disposed in the case. The chassis is generally made of metal, the transformer is usually a silicon steel sheet transformer, and a certain gap is formed between the transformer and the metal chassis. When the transformer is connected with alternating current to work normally, the changing current in the coil can generate a changing magnetic field. Although the design of the conventional silicon steel sheet transformer can close the magnetic circuit, the magnetic leakage phenomenon still exists. The leakage flux can cause the part of the case close to the silicon steel sheet transformer to vibrate under the action of a magnetic field, so that noise is generated and the case is easily damaged.

Disclosure of Invention

In view of the above, it is desirable to provide a UPS power supply and a chassis having a magnetic shielding function.

In a first aspect, the present invention provides a UPS power supply, including a case and a transformer disposed in the case, wherein the transformer generates a magnetic field, the case includes a cover plate made of a material attracted by the magnetic field, a gap exists between the transformer and the cover plate, the power supply further includes a shielding plate for shielding the magnetic field, the shielding plate is disposed between the transformer and the cover plate, and the magnetic field passes through the shielding plate and the cover plate.

In some possible embodiments, the shielding plate is fixed to the cover plate.

In some possible embodiments, the chassis further includes a box body, and the box body includes a bottom plate disposed opposite to the cover plate, and a front panel, a back panel, a first side plate, and a second side plate extending around an edge of the bottom plate; the front panel, the back panel, the first side plate and the second side plate are sequentially connected end to end, and form an accommodating space with the bottom plate and the cover plate in an enclosing manner; the transformer and the shielding plate are arranged in the accommodating space, and the magnetic field direction passes through the bottom plate.

In some possible embodiments, the bottom plate is located below the cover plate when the power source is placed.

In some possible embodiments, the transformer is fixed to the base plate.

In some possible embodiments, another shielding plate capable of shielding a magnetic field is disposed between the bottom plate and the transformer.

In some possible embodiments, the area of the plate surface of the shielding plate is not smaller than the projected area of the transformer on the cover plate.

In some possible embodiments, the shield plate is made of a magnetic shielding material.

In a second aspect, the present invention further provides a UPS power supply chassis, where a transformer may be installed, the transformer generates a magnetic field, the chassis includes a cover plate made of a material attracted by the magnetic field, and an installation portion disposed in the chassis and used for installing the transformer, and the chassis is further provided with a shielding plate for shielding the magnetic field, where when the transformer is installed in the installation portion, the shielding plate and the cover plate are disposed in the direction of the magnetic field, and the shielding plate is located between the transformer and the cover plate.

The invention isolates the magnetic field generated by the transformer by using the shielding plate with the magnetic shielding function, reduces the influence of the leakage flux of the transformer on the cover plate of the case, reduces the noise and improves the use quality of the case.

Drawings

Fig. 1 is a schematic perspective view of a UPS power supply according to an embodiment of the present invention.

Fig. 2 is a schematic perspective exploded view of a UPS power supply according to an embodiment of the invention.

Fig. 3 is a second perspective exploded view of a UPS power supply according to an embodiment of the invention.

Fig. 4 is a third perspective exploded view of a UPS power supply according to an embodiment of the invention.

Wherein, each element in the figure is marked as follows:

power supply 10 cabinet 20

Shield 30 Transformer 40

Accommodating space 50 electronic device 60

Fixing member 70 case 210

Bottom plate 211 and front plate 212

Back plate 213 first side plate 214

Second side panel 215 cover panel 220

Mounting hole 701 screw 703

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like (if any) indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances, in other words that the embodiments described are to be practiced in sequences other than those illustrated or described herein. Furthermore, the descriptions relating to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description and claims of this application and in the above-described drawings, the terms "comprises" and "comprising," and any variations thereof, may also include other elements, such as, for example, processes, methods, systems, articles, or apparatus that comprise a list of steps or elements are not necessarily limited to only those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such processes, methods, articles, or apparatus.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Please refer to fig. 1 and fig. 2, which are a schematic perspective view of a UPS power supply and a schematic perspective exploded view of a first angle of the UPS power supply according to an embodiment of the present invention.

The UPS power supply 10 includes a chassis 20, and a transformer 40 and a shield plate 30 disposed within the chassis 20. The transformer 40 may generate a magnetic field when in operation. The chassis 20 includes a cover 220 made of a material that is attracted by a magnetic field. The material attracted by the magnetic field includes a metal material, for example, a steel plate, an iron-nickel alloy plate. A gap exists between the transformer 40 and the cap plate 220. The shield plate 30 is disposed between the transformer 40 and the cap plate 220. The direction of the magnetic field generated by the transformer 40 passes through the shield plate 30 and the cap plate 220. The shielding plate 30 is used to isolate the magnetic field to prevent the cover plate 220 from vibrating up and down under the influence of the varying magnetic field attraction. The UPS power supply 10 further includes electronic devices 60 fixed in the case 20, where the electronic devices 60 include, but are not limited to, a rectifier device, a DC-AC inverter device, an auxiliary power supply, an input/output distribution device, an input/output isolation filter device, a lightning protection device, a switch, an AC contact device, and the like.

In the present embodiment, the casing 20 is substantially rectangular, and the cover 220 is rectangular. The chassis 20 further includes a case 210, and the case 210 includes a bottom plate 211 disposed opposite to the cover plate 220, and a front panel 212, a back panel 213, a first side panel 214, and a second side panel 215 extending around an edge of the bottom plate 211. The front panel 212, the back 213, the first side plate 214 and the second side plate 215 are sequentially connected end to end, and enclose an accommodating space 50 with the bottom plate 211 and the cover plate 220. The base plate 211 is also made of a material that is attracted by a magnetic field, such as a metallic material. The magnetic field direction also passes through the bottom plate 211.

The transformer 40 is fixed in the accommodating space 50 and fixed on the bottom plate 211 by the fixing member 70. The electronic device 60 is distributed around the transformer 40, and the electronic device 60 is fixed to the base plate 211 by the fixing member 70. In the present embodiment, the transformer 40 is a silicon steel transformer. In some possible embodiments, the transformer 40 may also be a transformer made of ferrite-type core material. The magnetic field generated by the transformer 40 also passes through the bottom plate 211.

In the present embodiment, the shield plate 30 is made of a magnetic shield material. The shield plate 30 may be made entirely of a magnetic shield material; the shielding plate 30 may be made by molding a plate-like object from a material such as plastic, wood, or alloy, and then coating, bonding, or plating a magnetic shielding material on the surface of the plate-like object. The magnetic shielding material refers to a strong magnetic material with high magnetic conductivity, and specifically, the magnetic shielding material can be a ferrite material, an aluminum alloy or a copper alloy.

Referring again to fig. 2, the shielding plate 30 is fixed to the cover plate 220 by the fixing member 70. Specifically, the shielding plate 30 has 4 mounting holes 701a at four corners, and correspondingly, the cover plate 220 has 4 mounting holes 701b for the fixing members 70 to pass through. Each of the fixing members 70 sequentially passes through each of the corresponding mounting

holes

701a and 701b to fix the shielding plate 30 to the cover plate 220. In the present embodiment, the fixing member 70 is a screw or a bolt.

In some possible embodiments, the shielding plate 30 may be fixed on the cover plate 220 in other fixing manners. Alternatively, shield 30 may be secured to cover 220 by sets of pin-and-socket pairs.

When the UPS power source 10 is in place, the bottom plate 211 is positioned below the cover plate 220. In the present embodiment, since the bottom plate 211 is disposed below and bears the pressure of the transformer 40, the electronic component 60, and the like, and the transformer 40 and the bottom plate 211 are tightly fixed by the fixing member 70, the influence of the magnetic field can be avoided. It is understood that in the present embodiment, when the chassis 20 is configured to have a portion in the magnetic field direction, i.e., one of the cover plate 220 and the bottom plate 211 (e.g., the bottom plate 211) is configured as the bottom of the UPS power supply 10, only one shielding plate 30 needs to be disposed between the transformer 40 and the other of the cover plate 220 and the bottom plate 211 (e.g., the cover plate 220), so that the chassis 20 is not affected by the magnetic field generated by the transformer 40.

In some possible embodiments, another shielding plate (not shown) may be disposed between the bottom plate 211 and the transformer 40, so that the UPS power source 10 is not affected by the magnetic field even if the orientation of the UPS power source is changed.

In some other possible embodiments, the box 210 may be configured in a circular, oval or other polygonal configuration. When the portion of the case 210 that blocks the magnetic field is made of a material attracted by the magnetic field, such as a metal material, the shielding plate 30 may be disposed between the portion and the transformer, thereby preventing the portion from being affected by the case. It is understood that the cover plate 20 in the above embodiments can be regarded as a part of a box body with any shape, i.e. the cover plate 20 can be any shape and is not limited to a rectangle.

Please refer to fig. 3 and fig. 4, which are a schematic diagram of a second angle exploded view of a UPS power supply and a schematic diagram of a third angle exploded view of the UPS power supply according to an embodiment of the present invention. The area of the shielding plate 30 is not smaller than the projected area of the transformer 40 on the cover 220 or one side plate of the case 210. In the present embodiment, after the shielding plate 30 is fixed on the box 210 or the cover 220, one side of the transformer 40 parallel to the plate surface of the shielding plate 30 can be completely covered, so that the influence of the magnetic field generated by the transformer 40 on the box 20 can be completely shielded.

In some possible embodiments, the shielding plate 30 may also be a box shape without a bottom plate, and the plate shape is only one of the embodiments and is not limited herein.

The UPS power supply described in the above embodiment may have a shielding plate disposed between the local chassis attracted by the magnetic field and the transformer, so as to shield the magnetic field, prevent the magnetic field generated by the transformer from affecting the chassis and causing vibration, further prevent the UPS power supply from generating noise during operation, and prevent the chassis from being shortened due to vibration of the chassis.

It should be noted that the above-mentioned numbers of the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments. And the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a UPS power, includes the quick-witted case and set up in the transformer of machine incasement, the transformer produces magnetic field, a serial communication port, the machine case includes the apron of making by the material that receives the magnetic field attraction, the transformer with there is the clearance between the apron, the power is still including the shield plate that is used for shielding magnetic field, the shield plate set up in the transformer with between the apron, the magnetic field direction passes through the shield plate with the apron.

2. The UPS power supply of claim 1, wherein the shield plate is secured to the cover plate.

3. The UPS power supply of claim 1, wherein the chassis further comprises a case, the case including a bottom panel disposed opposite the cover panel, and a front panel, a back panel, a first side panel, and a second side panel extending around an edge of the bottom panel; the front panel, the back panel, the first side plate and the second side plate are sequentially connected end to end, and form an accommodating space with the bottom plate and the cover plate in an enclosing manner; the transformer and the shielding plate are arranged in the accommodating space, and the magnetic field direction passes through the bottom plate.

4. The UPS power supply of claim 3, wherein the base plate is positioned below the cover plate when the power supply is in position.

5. The UPS power supply of claim 3, wherein the transformer is secured to the backplane.

6. The UPS power supply of claim 5, wherein another shield plate is disposed between the base plate and the transformer for shielding a magnetic field.

7. The UPS power supply of claim 1, wherein the area of the shield plate is not less than the area of the transformer projected onto the cover plate.

8. The UPS power supply of claim 1, wherein the shield plate is made of a magnetic shielding material.

9. The utility model provides a UPS power machine case, UPS power machine case mountable transformer, the transformer produces magnetic field, a serial communication port, the machine case includes the apron made by the material that receives the magnetic field attraction and set up in the installation department that is used for installing the transformer of machine incasement, the machine case still is provided with the shielding the shield plate in magnetic field works as the transformer install in during the installation department, the shield plate with the apron set up in the direction in magnetic field, just the shield plate is located the transformer with between the apron.

10. The UPS power supply of claim 9, wherein the chassis further comprises a case, the case including a bottom panel disposed opposite the cover panel, and a front panel, a back panel, a first side panel, and a second side panel extending around an edge of the bottom panel; the front panel, the back panel, the first side plate and the second side plate are sequentially connected end to end, and form an accommodating space with the bottom plate and the cover plate in an enclosing manner; the shielding plate is arranged in the accommodating space, and the mounting part is arranged on the bottom plate and passes through the bottom plate along the magnetic field direction.