CN201355811Y - Ethernet power supply equipment - Google Patents
Ethernet power supply equipment Download PDFInfo
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- CN201355811Y CN201355811Y CNU2008201565786U CN200820156578U CN201355811Y CN 201355811 Y CN201355811 Y CN 201355811Y CN U2008201565786 U CNU2008201565786 U CN U2008201565786U CN 200820156578 U CN200820156578 U CN 200820156578U CN 201355811 Y CN201355811 Y CN 201355811Y
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Abstract
The utility model relates to Ethernet power supply equipment, which comprises an AC / DC converter, a spare battery module, an Ethernet power supply module and an interface circuit, wherein the spare battery module is connected with the AC / DC converter, and the interface circuit is connected between the spare battery module and the Ethernet power supply module. The interface circuit is used for allowing the spare battery module to receive the first control signals of the Ethernet power supply equipment to start supplying power when the power of the Ethernet power supply equipment is turned off, and allowing the spare battery module to receive the second control signals of the Ethernet power supply equipment to stop supplying power when the power of the Ethernet power supply equipment is turned on again. The Ethernet power supply equipment is integrated equipment and has simple structure.
Description
Technical field
The utility model relates to a kind of Ethernet power supply unit, particularly relates to a kind of Ethernet power supply unit that possesses back-up source.
Background technology
In recent years, network (is the networking, this paper all is called network) phone (Voice OverInternet Protocol, VoIP) and wireless network (Wireless Local AreaNetwork, WLAN) application is like a raging fire, and is also more and more urgent by the demand that Ethernet itself provides electric power to support.(Power Over Ethernet, POE) technology has obtained numerous manufacturers and user's favor with its transmission means that data and power supply are killed two birds with one stone for Ethernet power supply.Usually, continue to provide power supply to power consumption equipment in order to guarantee the Ethernet power supply unit, the outdoor terminal equipment of wireless network for example, uninterrupted power supply or reserve battery need be connected to the Ethernet power supply unit.
See also shown in Figure 1ly, it is the employed a kind of Ethernet electric power system of prior art.This Ethernet electric power system 10 comprises uninterrupted power supply (ups) Unity 11, Ethernet supply module (be module, this paper all is called module) (Power Source Equipment, PSE) 12 and power consumption equipment (Powered Dvice, PD) 13.Uninterrupted power supply 11 receives the external communication electricity and is converted into low-voltage DC, and this low-voltage DC can be the reserve battery charging of uninterrupted power supply 11 inside, is converted to alternating current to offer Ethernet supply module 12 afterwards and with this low-voltage DC.When the external communication electricity was cut off, the reserve battery of uninterrupted power supply 11 inside can provide power supply to drive Ethernet supply module 12 in the regular hour.
Yet in Ethernet electric power system 10, uninterrupted power supply 11 is generally outsourcing device, so the volume of Ethernet electric power system 10 is big, integrated level is lower.In addition, uninterrupted power supply 11 can not be adjusted the power supply of its output according to the operating state of Ethernet supply module 12, so Ethernet electric power system 10 can not continue the output that provides stable.
This shows that above-mentioned existing Ethernet network power supply unit obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel Ethernet power supply unit, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The purpose of this utility model is, overcomes the defective that existing Ethernet network power supply unit exists, and a kind of novel Ethernet power supply unit is provided, and technical problem to be solved is to make its degree of integration higher, is very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.According to a kind of Ethernet power supply unit that the utility model proposes, it comprises: an AC/DC converter; One reserve battery module connects this AC/DC converter; One Ethernet supply module; An and interface circuit, be connected between this reserve battery module and this Ethernet supply module, wherein, this interface circuit is when the power cut-off of this Ethernet power supply unit the time, make this reserve battery module begin power supply because of one first control signal that receives this Ethernet power supply unit, and when the power up of this Ethernet power supply unit is powered, this reserve battery module is stopped power supply because of one second control signal that receives this Ethernet power supply unit.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid Ethernet power supply unit, wherein said second control signal is the high voltage feedback signal.
Aforesaid Ethernet power supply unit, wherein said first control signal is the low-voltage feedback signal.
Aforesaid Ethernet power supply unit, wherein said interface circuit comprises one first branch road that is connected into by a first transistor, a transistor seconds and a switching transistor, this switching transistor is connected between this a reserve battery module and the direct current output, and this control signal is controlled this switching transistor by this first transistor and this transistor seconds.
Aforesaid Ethernet power supply unit, the control end of wherein said switching transistor is via two conduction terminal ground connection of this transistor seconds, the control end of this transistor seconds is connected to this reserve battery module via two conduction terminal ground connection of this first transistor and via a current-limiting resistance, and the control end of this first transistor receives this first or second control signal.
Aforesaid Ethernet power supply unit, wherein said first and second transistor is a nmos pass transistor, this switching transistor is the PMOS transistor.
Aforesaid Ethernet power supply unit, wherein said interface circuit comprises one second branch road that is connected into by one the 3rd transistor, one the 4th transistor, one the 5th transistor and an optic coupling element, and this second branch road produces a soft-start signal to start this Ethernet power supply unit when powering once more behind the power cut-off of this Ethernet power supply unit.
Aforesaid Ethernet power supply unit, the soft start control end of wherein said Ethernet supply module is via the transistorized two conduction terminal ground connection in the 5th transistorized two conduction terminal and this optic coupling element; The 5th transistorized control end is successively via a biasing resistor and the 4th transistorized two conduction terminal ground connection, and via a capacity earth; The 4th transistorized control end is successively via a charging resistor and a charging capacitor ground connection, and is connected to this reserve battery module via this charging resistor; The 4th transistorized control end is via the 3rd transistorized two conduction terminal ground connection, and the 3rd transistorized control end is used to receive this first or second control signal.
Aforesaid Ethernet power supply unit, wherein said the 3rd, the 4th transistor is a nmos pass transistor, the 5th transistor is the PMOS transistor.
Aforesaid Ethernet power supply unit, wherein this Ethernet supply module and this AC/DC converter and reserve battery module are the conformability module.
The utility model compared with prior art has tangible advantage and beneficial effect.By technique scheme, the utility model Ethernet power supply unit has following advantage and beneficial effect at least: the utility model makes Ethernet supply module and AC/DC converter and reserve battery module can be integrated into an integrate module because of employing is connected interface circuit between reserve battery module and the Ethernet supply module.
In sum, a kind of Ethernet power supply unit of the utility model, it comprises AC/DC converter; The reserve battery module that connects this AC/DC converter; The Ethernet supply module and be connected the reserve battery module and the Ethernet supply module between interface circuit.Interface circuit is used for when the power cut-off of Ethernet power supply unit, makes the reserve battery module receive first control signal of Ethernet power supply unit and begin and powers; And when the power supply of the power up of Ethernet power supply unit, make the reserve battery module receive second control signal of Ethernet power supply unit and stop power supply.Ethernet power supply unit of the present invention is an integration equipment, and is simple in structure.The utility model has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the circuit block diagram of the employed a kind of Ethernet electric power system of prior art.
Fig. 2 is the circuit block diagram of a preferred embodiment of Ethernet power supply unit of the present invention.
Fig. 3 is the detailed circuit diagram of interface circuit shown in Figure 2.
21: Ethernet power supply unit 22: power consumption equipment
210: AC/DC converter 212: the reserve battery module
213: interface circuit 214: the Ethernet supply module
231: the first transistor 232: transistor seconds
234: the four transistors of 233: the three transistors
237: switching transistor 238: signal input end
239: soft start output 241: electric capacity
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of Ethernet power supply unit, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present utility model can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation by embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the utility model, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the utility model is limited.
See also shown in Figure 2ly, it is the circuit block diagram of a preferred embodiment of Ethernet power supply unit of the present invention.Wherein, Ethernet power supply unit 21 comprises AC/DC converter 211, the reserve battery module 212 that connects this AC/DC converter 211, Ethernet supply module (PSE) 214 and be connected reserve battery module 212 and Ethernet supply module 214 between interface circuit 213.
AC/DC converter 211 is used to receive external communication voltage and to convert thereof into dc low-voltage reserve battery module 212 is charged.Ethernet supply module 214 is by the external communication power voltage supply, and the generation dc low-voltage exports power consumption equipment 22 to.External communication voltage can be the alternating voltage of 220V or 110V.Dc low-voltage can be the 48V direct voltage.Power consumption equipment 22 can be the wireless low power desktop type switch of routing device, internet phone device or part.Ethernet supply module 214 and AC/DC converter 211 and reserve battery module 212 are conformability module but not separate type.
Below will describe the operation principle of Ethernet power supply unit 21 in detail:
Usually, Ethernet supply module 214 is by the external communication power voltage supply.When the outage of external communication electricity, Ethernet supply module 214 promptly passes to reserve battery module 212 by interface circuit 213 with low-voltage feedback signal Low, make the switch conduction of reserve battery module 212, reserve battery module 212 will begin power consumption equipment 22 power supplies via output thus.And when external communication voltage restores electricity, Ethernet supply module 214 promptly passes to reserve battery module 212 by interface circuit 213 with high voltage feedback signal High, make reserve battery module 212 switches close, can change thus by 22 power supplies of 214 pairs of power consumption equipments of Ethernet supply module.
See also shown in Figure 3ly, it is the detailed circuit diagram of interface circuit 213 shown in Figure 2.In the present embodiment, interface circuit 213 comprises the first transistor 231, transistor seconds 232, the 3rd transistor 233, the 4th transistor 234, the 5th transistor 235, optic coupling element 236, switching transistor 237, signal input end 238 and soft start output 239.The first, second, third and the 4th transistor 231,232,233,234 is N type metal-oxide semiconductor (N-type Metal Oxide Semiconductor, NMOS) transistor, the 5th transistor 235 and switching transistor 237 are P type metal-oxide semiconductor (P-type MetalOxide Semiconductor, PMOS) transistor.
The control end of the 5th transistor 235 is the ground connection via two conduction terminal of a biasing resistor and the 4th transistor 234 successively, and via electric capacity 241 ground connection.The control end of the 4th transistor 234 is successively via charging resistor and charging capacitor ground connection, and is connected to reserve battery module 212 via same charging resistor.The control end of the 4th transistor 234 is ground connection via the 3rd transistorized two conduction terminal, and the control end of the 3rd transistor 233 is used to receive aforesaid first or second control signal.
Below will describe the operation principle of interface circuit 213 in detail:
When external communication voltage cuts off the power supply, the power control terminal of Ethernet supply module 214 will produce low-voltage feedback signal Low, and this low-voltage feedback signal can be transferred to signal input end 238 so that the first transistor 231 is cut off.The control end of transistor seconds 232 is connected to reserve battery module 212 via current-limiting resistance, so transistor seconds 232 conductings.The control end of switching transistor 237 is via transistor seconds 232 ground connection that are in conducting state, so switching transistor 237 conductings.Reserve battery module 212 is connected to dc output end DC_OUT so that power consumption equipment 22 is powered via the switching transistor 237 that is in conducting state.
At this moment, the low-voltage feedback signal Low that signal input end 238 is received can make the 3rd transistor 233 end, and 212 pairs of charging capacitors of reserve battery module charge and are applied to the control end of the 4th transistor 234 so that its conducting via charging resistor.The control end of the 5th transistor 235 is because via biasing resistor and be in the 4th transistor 234 ground connection of conducting state and be switched on.Simultaneously, the diode of optic coupling element 236 inside has electric current to pass through, and also is in conducting state.Therefore, soft start output 239 is successively via the 5th transistor 235 that is in conducting state and optic coupling element 236 ground connection, and provides the soft start control end of the signal of zero potential to Ethernet supply module 214 (PSE controller soft start) that it is quit work.
When external communication voltage is powered again, the power control terminal of Ethernet supply module 214 will produce high voltage feedback signal High, and this high voltage feedback signal High can be transferred to signal input end 238 so that the first transistor 231 conductings.The control end of transistor seconds 232 is via the first transistor 231 ground connection that are in conducting state, so transistor seconds 232 is cut off, and and then causes switching transistor 237 to end.
At this moment, it is that zero potential and the control end that is applied to the 4th transistor 234 end it that the high voltage feedback signal High that signal input end 238 is received makes 233 conductings of the 3rd transistor, charging capacitor slowly discharge, and then the 5th transistor 235 is ended.When the soft start control end (PSE controller soft start) of Ethernet supply module 214 charges to high potential to connection electric capacity thereon, Ethernet supply module 214 will restart and begin power consumption equipment 22 is powered.
In sum, can integrate by interface circuit 213 with AC/DC converter 211 and reserve battery module 212 at Ethernet supply module of the present invention 214 becomes a conformability module, therefore can make the overall structure simplification.
In addition, interface circuit 213 comprises first branch road that is connected into by the first transistor 231, transistor seconds 232 and switching transistor 237, it makes reserve battery module 212 receive the control signal (low-voltage feedback signal) of Power over Ethernet equipment 21 when realizing aforementioned power cut-off when Power over Ethernet equipment 21 and the purpose that begins to power, and it is used to also to realize that aforementioned power up when Power over Ethernet equipment 21 makes another control signal (high voltage feedback signal) of reserve battery module 212 reception Power over Ethernet equipment 21 when powering and the purpose of stopping power supply.Therefore, Power over Ethernet equipment 21 can be adjusted the power supply of output according to the operating state of Ethernet supply module 214, makes Power over Ethernet equipment 21 can continue the output that provides stable.
Moreover, interface circuit 213 further comprises second branch road that is connected into by the 3rd transistor 233, the 4th transistor 234, the 5th transistor 235 and optic coupling element 236, and it can realize that the aforementioned Ethernet supply module 214 that makes can receive the purpose of soft-start signal with normal startup when powering once more behind the power cut-off of Power over Ethernet equipment 21.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. Ethernet power supply unit is characterized in that it comprises:
One AC/DC converter;
One reserve battery module connects this AC/DC converter;
One Ethernet supply module; And
One interface circuit is connected between this reserve battery module and this Ethernet supply module,
Wherein, this interface circuit is when the power cut-off of this Ethernet power supply unit the time, make this reserve battery module begin power supply because of one first control signal that receives this Ethernet power supply unit, and when the power up of this Ethernet power supply unit is powered, this reserve battery module is stopped power supply because of one second control signal that receives this Ethernet power supply unit.
2. Ethernet power supply unit according to claim 1 is characterized in that wherein said second control signal is the high voltage feedback signal.
3. Ethernet power supply unit according to claim 1 is characterized in that wherein said first control signal is the low-voltage feedback signal.
4. Ethernet power supply unit according to claim 1, it is characterized in that wherein said interface circuit comprises one first branch road that is connected into by a first transistor, a transistor seconds and a switching transistor, this switching transistor is connected between this a reserve battery module and the direct current output, and this control signal is controlled this switching transistor by this first transistor and this transistor seconds.
5. Ethernet power supply unit according to claim 4, it is characterized in that the two conduction terminal ground connection of the control end of wherein said switching transistor via this transistor seconds, the control end of this transistor seconds is connected to this reserve battery module via two conduction terminal ground connection of this first transistor and via a current-limiting resistance, and the control end of this first transistor receives this first or second control signal.
6. Ethernet power supply unit according to claim 5 is characterized in that wherein said first and second transistor is a nmos pass transistor, and this switching transistor is the PMOS transistor.
7. Ethernet power supply unit according to claim 1, it is characterized in that wherein said interface circuit comprises one second branch road that is connected into by one the 3rd transistor, one the 4th transistor, one the 5th transistor and an optic coupling element, this second branch road produces a soft-start signal to start this Ethernet power supply unit when powering once more behind the power cut-off of this Ethernet power supply unit.
8. Ethernet power supply unit according to claim 7, the soft start control end that it is characterized in that wherein said Ethernet supply module is via the transistorized two conduction terminal ground connection in the 5th transistorized two conduction terminal and this optic coupling element; The 5th transistorized control end is successively via a biasing resistor and the 4th transistorized two conduction terminal ground connection, and via a capacity earth; The 4th transistorized control end is successively via a charging resistor and a charging capacitor ground connection, and is connected to this reserve battery module via this charging resistor; The 4th transistorized control end is via the 3rd transistorized two conduction terminal ground connection, and the 3rd transistorized control end is used to receive this first or second control signal.
9. Ethernet power supply unit according to claim 8 is characterized in that wherein said the 3rd, the 4th transistor is a nmos pass transistor, and the 5th transistor is the PMOS transistor.
10. Ethernet power supply unit according to claim 1 is characterized in that wherein this Ethernet supply module and this AC/DC converter and reserve battery module are the conformability module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201565786U CN201355811Y (en) | 2008-12-01 | 2008-12-01 | Ethernet power supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201565786U CN201355811Y (en) | 2008-12-01 | 2008-12-01 | Ethernet power supply equipment |
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| Publication Number | Publication Date |
|---|---|
| CN201355811Y true CN201355811Y (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201565786U Expired - Fee Related CN201355811Y (en) | 2008-12-01 | 2008-12-01 | Ethernet power supply equipment |
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| CN (1) | CN201355811Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115348119A (en) * | 2021-05-13 | 2022-11-15 | 威强电工业电脑股份有限公司 | Redundant Ethernet power supply equipment and its backup method |
-
2008
- 2008-12-01 CN CNU2008201565786U patent/CN201355811Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115348119A (en) * | 2021-05-13 | 2022-11-15 | 威强电工业电脑股份有限公司 | Redundant Ethernet power supply equipment and its backup method |
| CN115348119B (en) * | 2021-05-13 | 2024-01-26 | 威强电工业电脑股份有限公司 | Redundant Ethernet power supply equipment and redundant method thereof |
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| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: UNIVERSAL SCIENTIFIC INDUSTRIAL CO. TD. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100622 Address after: Zhangjiang hi tech park integrated circuit industry Zhang Road 201203 Shanghai City No. 1558 Patentee after: Huanxu Electronics Co., Ltd. Address before: Zhangjiang hi tech park integrated circuit industry Zhang Road 201203 Shanghai City No. 1558 Co-patentee before: Huanlong Electric Co., Ltd. Patentee before: Huanxu Electronics Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20121201 |