CN204131831U - A kind of big current that prevents conducts the power panel causing local overheating - Google Patents
A kind of big current that prevents conducts the power panel causing local overheating Download PDFInfo
- Publication number
- CN204131831U CN204131831U CN201420665434.9U CN201420665434U CN204131831U CN 204131831 U CN204131831 U CN 204131831U CN 201420665434 U CN201420665434 U CN 201420665434U CN 204131831 U CN204131831 U CN 204131831U
- Authority
- CN
- China
- Prior art keywords
- power panel
- copper foil
- local overheating
- pcb
- big current
- 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
- 238000013021 overheating Methods 0.000 title claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011889 copper foil Substances 0.000 claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a kind of big current that prevents and conduct the power panel causing local overheating, belong to pcb board technical field, in horseshoe-shape, comprise P12V power module, PSU, server power supply interface, cross-over connection two copper sheets on the two ends Copper Foil at the described the narrowest place of power panel, a conduction 12V voltage, another root is as current circuit; The utility model is cross-over connection two copper sheets on the two ends Copper Foil at the narrowest place of power panel, and when avoiding system to operate at full capacity, the local overheating that big current is occurred by narrow zone, shares the pressure in narrow PCB region, reduce to burn plate risk.
Description
Technical field
The utility model discloses a kind of power panel, belong to pcb board technical field, specifically a kind of big current that prevents conducts the power panel causing local overheating.
Background technology
PCB(Printed Circuit Board), Chinese is printed wiring board, and being called for short printed board, is one of vitals of electronics industry.Almost often kind of electronic equipment, little of electronic watch, calculator, arrive computer greatly, communication electronic device, military issue weapons system, as long as there are the electronic devices and components such as integrated circuit, in order to the electric interconnection between them, all will use printed board.PCB divides according to the difference of function different kinds, such as power panel, front panel, single-chip microcomputer mini system plate etc.Power panel is mainly used in system power supply, when on power panel, during carrying high currents, needs to ensure to prevent from causing local overheating because electric current is excessive, to burn PCB Copper Foil by the width that Copper Foil path reservation that electric current flows through is enough.But in the power panel R&D process of reality, monolithic power panel size can be subject to cabinet or the isostructural restriction of rack, usually causes space very limited, makes PCB Copper Foil there will be narrow situation at some places, during carrying high currents, cause big current in Copper Foil the narrowest place local overheating.Therefore there is local overheating when carrying high currents in power panel for preventing, the utility model proposes a kind of big current that prevents and conduct the power panel causing local overheating, by avoiding Copper Foil local overheating at the narrowest place's welding conductive copper sheet, not only solve the contradiction between PCB spatial limitation and carrying high currents; And avoid power panel to burn the generation of plate risk, enhance the use safety of pcb board.
Summary of the invention
The technical problems to be solved in the utility model is when PCB Copper Foil there will be narrow situation at some places, prevent carrying high currents in Copper Foil the narrowest place local overheating, for addressing this problem, the utility model proposes a kind of big current that prevents and conduct the power panel causing local overheating, the technical scheme of employing is:
Prevent big current from conducting the power panel causing local overheating, in horseshoe-shape, comprise P12V power module, PSU, server power supply interface, cross-over connection two copper sheets on the two ends Copper Foil at the described the narrowest place of power panel, a conduction 12V voltage, another root is as current circuit.
According to 1oz Copper Foil, the standard of 40mil/a, utilizes formula I=(40*Imax-W)/40, determine conductive copper sheet conduction current I, select the specification of copper sheet; Wherein Imax is the lowest high-current value of PCB, and W is the PCB Copper Foil width at the narrowest place.
Conductive copper sheet is overlapped on the Copper Foil of two ends or by the PAD encapsulation of conductive copper sheet by PCB conducting resinl and is overlapped on the Copper Foil of two ends.
The beneficial effects of the utility model are: the utility model is cross-over connection two copper sheets on the two ends Copper Foil at the narrowest place of power panel, when avoiding system to operate at full capacity, the local overheating that big current is occurred by narrow zone, shares the pressure in narrow PCB region, reduces to burn plate risk.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
Embodiment
With reference to the accompanying drawings, by embodiment, the utility model is further illustrated:
One piece of power panel of powering to server system, is limited to casing structure, and power panel is a horseshoe-shaped structure, and power module is plugged on connector position as shown in Figure 1; Power module P12V directly enters power panel, in horseshoe-shaped left side, there is the PCB region that one end is the narrowest, electric current needs all just to be transmitted to server system by this region and to power port, at the narrowest region two cross-over connection two copper sheets, a conduction 12V, another root is as current circuit, be overlapped on the Copper Foil of two ends by PCB conducting resinl or be overlapped on the Copper Foil of two ends by the PAD encapsulation of conductive copper sheet, when avoiding system to operate at full capacity, the local overheating that big current is occurred by narrow zone, shares the pressure in narrow PCB region, reduces to burn plate risk.
Optimum conductive copper sheet specification can be determined by following steps:
1) when power panel PCB design, the lowest high-current value I_max flowing through PCB is evaluated;
2) in conjunction with the physical dimension of power panel, the PCB Copper Foil width W (mil) that big current flows through the narrowest place is evaluated;
3) according to 1oz Copper Foil, the standard of 40mil/a, utilizes formula I=(40*Imax-W)/40, determine conductive copper sheet conduction current I;
4) according to above formula, suitable conductive copper sheet can be selected;
5) the PCB length L at the narrowest place of PCB is determined.
Embodiment of the present utility model just comparatively preferred embodiment; the technical solution of the utility model can not be limited; the equivalent variations made in the scope of the utility model protection all should fall in protection range of the present utility model; except the technical scheme of the utility model protection, other are the known technology of those skilled in the art.
Claims (3)
1. prevent big current from conducting the power panel causing local overheating, in horseshoe-shape, comprise P12V power module, PSU, server power supply interface, is characterized in that cross-over connection two copper sheets on the two ends Copper Foil at the described the narrowest place of power panel, a conduction 12V voltage, another root is as current circuit.
2. a kind of big current that prevents according to claim 1 conducts the power panel causing local overheating, it is characterized in that according to 1oz Copper Foil, the standard of 40mil/a, utilize formula I=(40*Imax-W)/40, determine conductive copper sheet conduction current I, select the specification of copper sheet; Wherein Imax is the lowest high-current value of PCB, and W is the PCB Copper Foil width at the narrowest place.
3. a kind of big current that prevents according to claim 1 and 2 conducts the power panel causing local overheating, it is characterized in that conductive copper sheet is overlapped on the Copper Foil of two ends or by the PAD encapsulation of conductive copper sheet by PCB conducting resinl and is overlapped on the Copper Foil of two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665434.9U CN204131831U (en) | 2014-11-10 | 2014-11-10 | A kind of big current that prevents conducts the power panel causing local overheating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665434.9U CN204131831U (en) | 2014-11-10 | 2014-11-10 | A kind of big current that prevents conducts the power panel causing local overheating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204131831U true CN204131831U (en) | 2015-01-28 |
Family
ID=52388143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665434.9U Expired - Fee Related CN204131831U (en) | 2014-11-10 | 2014-11-10 | A kind of big current that prevents conducts the power panel causing local overheating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204131831U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107690255A (en) * | 2017-08-28 | 2018-02-13 | 郑州云海信息技术有限公司 | The copper bar and PCB hybrid power supplies method and electric power-feeding structure of a kind of server |
| CN111381657A (en) * | 2020-02-28 | 2020-07-07 | 苏州浪潮智能科技有限公司 | CPU power supply system and server |
-
2014
- 2014-11-10 CN CN201420665434.9U patent/CN204131831U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107690255A (en) * | 2017-08-28 | 2018-02-13 | 郑州云海信息技术有限公司 | The copper bar and PCB hybrid power supplies method and electric power-feeding structure of a kind of server |
| CN107690255B (en) * | 2017-08-28 | 2020-11-27 | 苏州浪潮智能科技有限公司 | Copper bar and PCB hybrid power supply method and power supply structure for server |
| CN111381657A (en) * | 2020-02-28 | 2020-07-07 | 苏州浪潮智能科技有限公司 | CPU power supply system and server |
| CN111381657B (en) * | 2020-02-28 | 2021-07-16 | 苏州浪潮智能科技有限公司 | CPU power supply system and server |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |