CN201655857U - Piezoelectric transformer and packaging structure thereof - Google Patents
Piezoelectric transformer and packaging structure thereof Download PDFInfo
- Publication number
- CN201655857U CN201655857U CN2009202783994U CN200920278399U CN201655857U CN 201655857 U CN201655857 U CN 201655857U CN 2009202783994 U CN2009202783994 U CN 2009202783994U CN 200920278399 U CN200920278399 U CN 200920278399U CN 201655857 U CN201655857 U CN 201655857U
- Authority
- CN
- China
- Prior art keywords
- piezoelectric transformer
- transformer
- encapsulating structure
- lateral electrode
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a packaging structure of a piezoelectric transformer, which comprises the piezoelectric transformer, an open hole, a lateral electrode, an external circuit board and a fixed connecting device, wherein the open hole is drilled at the center of the piezoelectric transformer; the lateral electrode is placed on the hole wall of the open hole; and the fixed connecting device penetrates through the open hole to fix the piezoelectric transformer and the external circuit board. The utility model also discloses the piezoelectric transformer, which comprises the open hole and the lateral electrode, wherein the open hole is drilled at the center of the piezoelectric transformer; the lateral electrode is placed on the hole wall of the open hole. The utility model solves the problem of welding failure of the lateral electrode of the transformer with an original structure, simultaneously effectively reduces the temperature rise of the transformer and improves the output power of the transformer under the same working temperature rise; the technical scheme also simplifies the packaging structure of the transformer and reduces the occupied area of the transformer on the circuit board.
Description
Technical field
The utility model relates to a kind of piezoelectric transformer, relates in particular to a kind of piezoelectric transformer and encapsulating structure thereof.
Background technology
Piezoelectric ceramic transformer is the electronic components of high power of emerging appearance, and it has low EMI, good EMC characteristic, high efficiency, power density height, characteristics such as compact.The present piezoelectric transformer product that occurs is mainly based on the booster type piezoelectric transformer (being mainly used in the backlight electric power of LCD) of small-power (less than 10W) and the power voltage-dropping type piezoelectric transformer (being mainly used in various power supplys) of (less than 50W) slightly greatly.For the related method for packing of utility model is at the voltage-dropping type piezoelectric ceramic transformer.
Present high-power piezoelectric transformer is mainly based on (profile) vibration mode radially, and patent ZL200820109614.3 and ZL 200820109616.2 have announced the piezoelectric transformer structure of a kind of radially (profile) vibration and the method that is electrically connected of piezoelectric transformer and external circuit.Basically all relate to radially (profile) vibration piezoelectric transformer at present, all are by the electrode of burning infiltration in the piezoelectric transformer side, connect lateral electrode and outside solder joint by lead.Find by the use checking that is in a large number, for this type of piezoelectric transformer, it lost efficacy and mainly occurred in the lateral electrode of piezoelectric transformer, the lateral electrode of main form of invalidation and welding lead disconnect, trace it to its cause, for the piezoelectric transformer of radially (profile) vibration, outermost profile, the displacement of its vibration and speed are all maximum, and there is the phenomenon of local overheating in the lateral electrode solder joint during work.Find through the research test, radially the displacement and the vibration velocity of circumference (profile) central area of (profile) vibration piezoelectric transformer are all less, but distribute from the temperature field on piezoelectric transformer plane, the temperature of central area is higher, if can improve the heat-sinking capability of central area, thereby improve the heat-sinking capability of entire device, certainly will will reduce the working temperature of entire device, thereby improve the control ability of piezoelectric transformer power.
The utility model content
In order to solve in the prior art radially (profile) vibration piezoelectric transformer, lateral electrode and the problem that is connected the Problem of Failure that lead disconnects, the utility model provides a kind of piezoelectric transformer and encapsulating structure thereof, guarantee piezoelectric transformer, improve the heat-sinking capability of transformer, thereby improve the control ability of integral device power output.
For achieving the above object, the utility model provides a kind of piezoelectric transformer, comprising:
The center of described piezoelectric transformer offers perforate;
Lateral electrode places on the hole wall of described perforate.
The size in the aperture of described perforate is no more than half of described piezoelectric transformer diameter.
The utility model provides a kind of piezoelectric transformer encapsulating structure, comprising:
Piezoelectric transformer;
The center of described piezoelectric transformer offers perforate;
Lateral electrode places on the hole wall of described perforate;
The external circuit board;
Fixed connection apparatus, described fixed connection apparatus pass described perforate described piezoelectric transformer and described the external circuit board are fixed.
Described fixed connection apparatus is a hollow.
The wall of described fixed connection apparatus is provided with aperture.
Described piezoelectric transformer encapsulating structure also comprises the connection lead, described connection lead pass hollow described fixed connection apparatus and on described aperture be connected with described lateral electrode, and be connected with the solder joint of described the external circuit board.
Described fixed connection apparatus is metal bolts and nut, and described metal bolts is described hollow, and the wall of the metal bolts of described hollow is provided with aperture.
Described piezoelectric transformer encapsulating structure also comprises the insulating cement bed course, is provided with respectively between described metal bolts and the described piezoelectric transformer, and between described nut and the described external circuit.
Be provided with the insulating cement bed course between described piezoelectric transformer and the external circuit board.
The size in the aperture of described perforate is no more than half of described piezoelectric transformer diameter.
Therefore, employing the utility model has solved the problem of original structure transformer lateral electrode weld failure, has effectively reduced the temperature rise of transformer simultaneously, under identical work temperature rise, has improved the power output of transformer; Above technical scheme has also been simplified the encapsulating structure of transformer, has reduced the area occupied of transformer on circuit board.
Description of drawings
Fig. 1 is the schematic cutaway view of surface-mount type encapsulating structure of the utility model voltage-dropping type piezoelectric ceramic transformer.
Fig. 2 is the schematic front view of surface-mount type encapsulating structure of the utility model voltage-dropping type piezoelectric ceramic transformer.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
The piezoelectric transformer that the utility model provides with and encapsulating structure, solved the problem of original structure transformer lateral electrode weld failure, effectively reduced the temperature rise of transformer simultaneously, under identical work temperature rise, improved the power output of transformer; Also simplify the encapsulating structure of transformer, reduced the area occupied of transformer on circuit board.
Be illustrated in figure 1 as the piezoelectric transformer schematic diagram after a kind of piezoelectric transformer encapsulating structure of the utility model encapsulates, Fig. 2 is the cutaway view of a kind of piezoelectric transformer encapsulating structure of the utility model, as shown in the figure, the encapsulating structure of this piezoelectric transformer is to carry out at piezoelectric transformer with holes 1, and the center of this piezoelectric transformer 1 offers perforate 100; The lateral electrode (not shown) places on the hole wall of described perforate 100; The external circuit board 2; Fixed connection apparatus, described fixed connection apparatus pass described perforate 100 described piezoelectric transformer 1 and described the external circuit board 2 are fixed.Center drilling can increase area of dissipation, and fixedly the metal nuts of usefulness can be used for heat conduction simultaneously, thereby improves the heat-sinking capability of transformer.
As shown in Figure 2, described fixed connection apparatus is a hollow, forms cavity 30 on fixed connection apparatus.The wall of described fixed connection apparatus is provided with aperture 300.As being example among the figure, fixed connection apparatus is metal bolts 31 and nut 32, and described metal bolts is described hollow, and the wall of the inner chamber of the metal bolts of described hollow is provided with aperture.Except adopting screw bolt and nut, can also adopt double-screw bolt, these modes of screw, double-screw bolt and screw are hollow, form inner chamber, the chamber wall forms aperture, equally also can play with the same effect of screw bolt and nut.
Continuation is referring to shown in Figure 2, this encapsulating structure also comprises connection lead 4, described connection lead 4 pass hollow described fixed connection apparatus inner chamber 30 and on the hole wall of described aperture 300 and piezoelectric transformer on lateral electrode be connected, and be connected with the solder joint of the external circuit board 2.
For the insulation effect that plays, between described metal bolts 31 and the described piezoelectric transformer 2, and between described nut 32 and described the external circuit board 2 insulating cement bed course 5 is set respectively.
Also can be provided with insulating cement bed course 5 between described piezoelectric transformer 1 and the external circuit board 2.
The size in the aperture of described perforate is no more than half of described piezoelectric transformer diameter.The utility model has adopted a kind of center piezoelectric transformer with holes; Use metal bolts that piezoelectric transformer is fixed on the circuit external plate; By being positioned at the lateral electrode of perforate, use lead to realize being electrically connected of piezoelectric transformer and external circuit.
Solve the problem of original structure transformer lateral electrode weld failure by the utility model, effectively reduced the temperature rise of transformer simultaneously, under identical work temperature rise, improved the power output of transformer; Also simplify the encapsulating structure of transformer, reduced the area occupied of transformer on circuit board.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (10)
1. piezoelectric transformer is characterized in that comprising:
The center of described piezoelectric transformer offers perforate;
Lateral electrode places on the hole wall of described perforate.
2. piezoelectric transformer according to claim 1, the size that it is characterized in that the aperture of described perforate is no more than half of described piezoelectric transformer diameter.
3. piezoelectric transformer encapsulating structure is characterized in that comprising:
Piezoelectric transformer;
The center of described piezoelectric transformer offers perforate;
Lateral electrode places on the hole wall of described perforate;
The external circuit board;
Fixed connection apparatus, described fixed connection apparatus pass described perforate described piezoelectric transformer and described the external circuit board are fixed.
4. piezoelectric transformer encapsulating structure according to claim 3 is characterized in that described fixed connection apparatus is a hollow.
5. piezoelectric transformer encapsulating structure according to claim 4 is characterized in that the wall of described fixed connection apparatus is provided with aperture.
6. piezoelectric transformer encapsulating structure according to claim 5, it is characterized in that also comprising the connection lead, described connection lead pass hollow described fixed connection apparatus and on described aperture be connected with described lateral electrode, and be connected with the solder joint of described the external circuit board.
7. piezoelectric transformer encapsulating structure according to claim 6 is characterized in that described fixed connection apparatus is metal bolts and nut, and described metal bolts is the formation inner chamber of described hollow, and the chamber wall of described inner chamber is provided with aperture.
8. piezoelectric transformer encapsulating structure according to claim 7 is characterized in that also comprising the insulating cement bed course, is provided with respectively between described metal bolts and the described piezoelectric transformer, and between described nut and the described external circuit.
9. piezoelectric transformer encapsulating structure according to claim 8 is characterized in that, is provided with the insulating cement bed course between described piezoelectric transformer and the external circuit board.
10. according to the arbitrary described piezoelectric transformer encapsulating structure of claim 3-9, the size that it is characterized in that the aperture of described perforate is no more than half of described piezoelectric transformer diameter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009202783994U CN201655857U (en) | 2009-12-25 | 2009-12-25 | Piezoelectric transformer and packaging structure thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009202783994U CN201655857U (en) | 2009-12-25 | 2009-12-25 | Piezoelectric transformer and packaging structure thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201655857U true CN201655857U (en) | 2010-11-24 |
Family
ID=43121100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009202783994U Expired - Fee Related CN201655857U (en) | 2009-12-25 | 2009-12-25 | Piezoelectric transformer and packaging structure thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201655857U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102110769A (en) * | 2009-12-25 | 2011-06-29 | 北京为华新光电子有限公司 | Piezoelectric transformer and packaging structure thereof |
-
2009
- 2009-12-25 CN CN2009202783994U patent/CN201655857U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102110769A (en) * | 2009-12-25 | 2011-06-29 | 北京为华新光电子有限公司 | Piezoelectric transformer and packaging structure thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201655857U (en) | Piezoelectric transformer and packaging structure thereof | |
CN103050453B (en) | Surface mount microwave device | |
CN201478299U (en) | Power module electrode and power module | |
CN102110769A (en) | Piezoelectric transformer and packaging structure thereof | |
CN201374327Y (en) | Ceramic small-shape shell | |
CN108270381A (en) | A kind of motor driver of new structure | |
CN219164429U (en) | High-power laser constant-current power supply module structure | |
CN210073615U (en) | Solid-state laminated capacitor | |
CN201655856U (en) | Surface-mounted packaging structure of step-down piezoelectric ceramic transformer | |
CN201957369U (en) | Motor controller for high power electric car | |
CN213003225U (en) | High-power electric arc welding machine with insulating box body | |
CN210246065U (en) | A quick-witted case for power conversion | |
CN209843912U (en) | Filter suitable for high-power robot control system | |
CN208581397U (en) | Circuit board and charging pile | |
CN208063072U (en) | A kind of new structural motor driver | |
CN203013962U (en) | Copper cylinder terminal used for controller of electric motorcycle motor cycle | |
CN207719849U (en) | Charger core body | |
CN208284365U (en) | A kind of anti-bulge self-healing locomotive capacitor of buffer-type | |
CN207706507U (en) | Multilayer circuit board | |
CN104967331B (en) | Frequency converter assembly | |
CN210325791U (en) | Power MOS module structure convenient for heat dissipation | |
CN201378591Y (en) | Surface-mounted metal wall ceramic substrate shell | |
CN102110768A (en) | Surface-mounted type encapsulation structure of step-down piezoelectric ceramic transformer | |
CN204538985U (en) | A kind of modular power unit | |
CN211088255U (en) | Silicon controlled rectifier module |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20131225 |