Abstract:
A power supply device equipped with AC and DC power supply structures aims to separate an AC connection structure and a DC connection structure of the power supply device of a given size specification to replace the conventional DC and AC connection structures that are coupled on a single connection board so that the DC connection board may be extended to the maximum width of the power supply device specification to increase output legs and maximize the output power of the power supply device.

Description:
FIELD OF THE INVENTION 
   The present invention relates to a power supply device equipped with AC and DC power connection structures and particularly to a power supply device for processing AC and DC electricity to deliver maximum output power. 
   BACKGROUND OF THE INVENTION 
   In response to the increasing requirements of the Internet, multimedia and the like, computer technology has great advances. The required hardware structures such as hard disk drives, optical disk drives, burners have become basic equipment of users or server operators. The required output power provided by the power supply device also has to increase at the same time. The basic power of 250 W in the past no longer meets the requirements. These days the computer hardware equipment often requires 450 W, 500 W or 600 W of output power. 
   However, the prevailing trend of hardware design at present is to maintain the function of the large equipment at a shrinking size. The power supply also has to follow this trend. This causes problems in the design of power supply devices. For instance, for the power supply device used in the common 1U specification, the maximum width is 100 mm, and the electric connection board for AC and DC output and input has a width of 92 mm. Due to the present technique is to wire the AC input and DC output on a single circuit board on which AC input legs occupy 22 mm. The remained 70 mm is for DC output. However, convert the power to output legs, every 100 W of power needs 15 mm. With the present 1U specification, the maximum power supply output is 450 W. It becomes a capacity constraint. As the present server space requires at least 500 W of power supply, or at least 75 mm for the DC output legs. The present technique cannot meet this requirement. To change the width or space design of the server is difficult. Hence this is an important technical issue pending to be resolved in the power supply industry. 
   SUMMARY OF THE INVENTION 
   The primary object of the present invention is to solve the aforesaid disadvantages. The present invention aims to divide a power supply device to an AC connection structure and a DC connection structure under the specification of the same size to replace the conventional design that couples the AC connection structure and the DC connection structure to one connection board so that the output legs of the DC connection board may be expanded to the maximum width of the power supply device to achieve maximum output power. 
   Another object of the invention is to provide a design that is applicable to a power supply device, a power supply module and a retrieval power supply device at the same time to achieve optimal economic effectiveness. 
   The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective view of the present invention adopted for use on a single power supply device. 
       FIG. 2  is a perspective view of the present invention adopted for use on a horizontal retrieval power supply device. 
       FIG. 3  is a top view of the present invention adopted for use on a stacked retrieval power supply device. 
       FIG. 4  is a side view of the present invention adopted for use on a stacked retrieval power supply device. 
       FIG. 5  is a perspective view of the present invention adopted for use on a power supply module. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Please refer to  FIG. 1  for a power supply device  1  that has an AC connection structure  11  and a DC connection structure  10  located therein separately to replace the conventional connection structure that mixes the AC and DC power supply on a same connection structure. The DC connection structure  10  includes a main circuit board  100  and an electric processing unit  101  located on the main circuit board  100 . The main circuit board  100  has a DC connection end  102 . The AC connection structure  11  includes a secondary circuit board  110  electrically connecting to the DC structure that has an AC connection end  111 . The power supply device  1  in the embodiment is adopted to the commonly used 1U specification as an example, and has a standard width of 100 mm in the present standard specification. Due to the AC connection structure  11  is located individually on the secondary circuit board  110  on a upper side of the power supply device  1 , the main circuit board  100  of the DC power structure  10  may be fully expanded to the entire width of the power supply device  1 . Hence the DC connection end  102  on the width of 92 mm can have output legs with maximum power capacity up to 600 W. Such a power output is sufficient to meet the requirements of many hardware equipment. Therefore it provides the economic effectiveness of delivering the performance of a large power supply at a smaller size. 
   Refer to  FIG. 2  for another embodiment of the invention that has one single power supply device  1  serving as a retrieval power supply device  1  for backup purpose. The retrieval power supply device  1  is a horizontal type to serve as an example. It is located in one of a plurality of housing compartments  14  formed by dividing a case  12  by partitions  13 . The case  12  has one end corresponding to each housing compartment  14  to couple with an AC connection port  15  and a DC connection port  16  that are coupled on an electric connection board  17 . The electric connection board  17  is connected to cables  18  which are extended outside the case  12  to deliver electric power. The power supply device  1  has an AC connection end  111  and a DC connection end  102  corresponding respectively to the AC connection port  15  and the DC connection port  16 . Hence with the power supply device  1  is installed in the housing compartment  14  of the case  12 , the AC connection end  111  can be coupled with the AC connection port  15  and the DC connection end  102  can be coupled with the DC connection port  16  to establish electric connection. Therefore each power supply device  1  can deliver maximum power output. When the power supply device  1  is coupled in parallel, output power may be multiplied to meet the requirements of various types of hardware equipment. When adopted for backup purpose, each power supply device  1  can deliver maximum output power to meet the computer hardware requirement. 
   Refer to  FIGS. 3 and 4  for yet another embodiment of the invention. It adopts a technique similar to that shown in  FIG. 2 . The difference is that the AC connection port  15  and the DC connection port  16  are jointly located on an electric connection board  17 , and the power supply device  1  is installed by stacking. Other details are same as previously discussed. Refer to  FIG. 5  for an embodiment of a power supply module  2  that includes a plurality of electric processing units  101 . A case  20  is divided into at least two housing compartments  22  by partitions  21  corresponding to the number of the electric processing units  101 . One end of the case  20  corresponding to each housing compartment  22  is coupled with an AC connection port  15  and a DC connection port  16 . Each electric processing module consists of a main circuit board  100  and one electric processing unit  101 . On the main circuit board  100 , there is a DC connection end  102  corresponding to the DC connection port  16 . On the upper side of each housing compartment  22 , there is a secondary circuit board  110  which has an AC connection end  111  corresponding to the AC connection port  15 . The secondary circuit board  110  is electrically connected to the electric processing module. The AC connection port  15  and the DC connection port  16  are individually located on an electric connection board  17  (or jointly located on the electric connection board  17 ). The connection board  17  is connected to cables  18  which are extended outside the case  20  to deliver electric power. Such a structure allows multiple modules to be installed simultaneously and makes installation easier. The case  20  may have a separated anchor board  19  to install the AC connection port  15  and the DC connection port  16 . The anchor board  19  and the case  20  have respectively an anchor lug  190  and an anchor hole  191 . After the main circuit board  100 , secondary circuit board  110  and radiation fans  23  are installed in the housing compartment  22 , wedge the anchor board  19  in the case  20  to align and fasten the anchor lug  190  to the anchor hole  191 , then the AC and DC connection end  111 ,  102  and the AC and DC connection port  15 ,  16  may be connected electrically. Thus in the existing width of the present specification, the DC connection end  102  may be fully expanded to the width of the housing compartment  22  to maximize the output power of the power supply module  2 . 
   While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.