CN209913839U - Power supply system - Google Patents
Power supply system Download PDFInfo
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- CN209913839U CN209913839U CN201920839264.4U CN201920839264U CN209913839U CN 209913839 U CN209913839 U CN 209913839U CN 201920839264 U CN201920839264 U CN 201920839264U CN 209913839 U CN209913839 U CN 209913839U
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Abstract
The present application relates to a power supply system comprising: the power supply end equipment and the switch control module; the switch control module comprises an interface and a control switch; the control switch is provided with a control end, a first connecting end and a second connecting end; the control end is arranged in the interface, the first connecting end is connected with the equipment power supply, the second connecting end is connected with the power supply end equipment, and the power supply end equipment is connected with the power receiving end equipment through the interface; when the power receiving end equipment is connected with the power supply end equipment through the interface, the control end is conducted to enable the equipment power supply to supply power to the power supply end equipment, and the power supply end equipment supplies power to the power receiving end equipment through the interface. The control switch is arranged between the equipment power supply and the power supply end equipment, the control end of the control switch is arranged in the interface, and only when the joint of the power receiving end equipment is inserted into the interface, the control end is conducted, the equipment power supply can supply power to the power supply end equipment, so that the loss of the power supply system in an idle state can be reduced, and energy conservation and emission reduction are realized.
Description
Technical Field
The utility model relates to a power supply technical field especially relates to a power supply system.
Background
The Power Over Ethernet (POE) technology is a technology for providing dc Power to some network terminal devices through a network cable based on the existing ethernet wiring infrastructure. In the power over ethernet technology, the network cable has both functions of transmitting data signals and supplying power with dc. The technology ensures that the terminal equipment does not need to depend on an external power adapter for power supply, thereby saving a power adapter, a power supply cable and a plug and saving wiring and hardware cost. Power over ethernet has been widely used in the fields of VoIP telephony, wireless AP, video surveillance, etc.
The power over ethernet technology requires the use of POE midspan devices to supply power to the network terminal through the network cable, and the POE midspan devices are applied between the ordinary switch and the network terminal. Ordinary midspan equipment is used as a power supply, and power consumption of power supply end equipment is large when the power supply end equipment is not connected with powered equipment, so that the requirement of no-load power consumption cannot be met.
SUMMERY OF THE UTILITY MODEL
The present application provides a power supply system that can reduce loss in an unloaded state.
A power supply system comprising: the power supply end equipment and the switch control module; the switch control module comprises an interface and a control switch; the control switch is provided with a control end, a first connecting end and a second connecting end; the control end is arranged in the interface, the first connecting end is connected with an equipment power supply, the second connecting end is connected with the power supply end equipment, and the power supply end equipment is connected with the power receiving end equipment through the interface; when the power receiving end equipment is connected with the power supply end equipment through the interface, the control end is conducted so that the equipment power supply supplies power to the power supply end equipment, and the power supply end equipment supplies power to the power receiving end equipment through the interface.
In one embodiment, the interface is an RJ45 interface.
In an embodiment, the control terminal includes a first pin and a second pin, and when the connector of the power receiving terminal device is connected to the interface of the power supply terminal device, the first pin is pushed to contact with the second pin so as to conduct a connection path between the power supply terminal device and the device power supply.
In an embodiment, the switch control module further includes a switch control circuit, the switch control circuit includes a first connection end, a second connection end, and a third connection end, the first connection end of the switch control circuit is connected to the device power supply, the second connection end of the switch control circuit is connected to the power supply end device, the third connection end of the switch control circuit is connected to the second connection end of the control switch, the first connection end of the control switch is connected to the dc power supply, and when the control end of the control switch is turned on, the device power supply supplies power to the power supply end device.
In one embodiment, the switch control circuit includes: a first switch control tube and a second switch control tube;
the first switch control tube comprises a first input end, a second input end and a first output end, the second switch control tube comprises a third input end, a fourth input end and a second output end, wherein the first input end is connected with the second connecting end of the switch control module, the second input end is grounded, the first output end is connected to the third input end of the second switch control tube through a first resistor and a second resistor, the fourth input end is connected with the equipment power supply, and the second output end is connected with the power supply end equipment.
In an embodiment, the first switch control transistor and the second switch control transistor are any one of a triode and a field effect transistor.
In an embodiment, the switch control circuit further includes a diode, and the second connection terminal of the control switch is connected to the first input terminal of the first switch control transistor through the diode.
In one embodiment, the switch control circuit further comprises a third resistor and a first capacitor connected in parallel; one ends of the third resistor and the first capacitor are connected with the cathode of the diode, and the other ends of the third resistor and the first capacitor are grounded.
In an embodiment, the switch control circuit further includes a filtering module, one end of the filtering module is connected to the device power supply, and the other end of the filtering module is connected to a common end of the first resistor and the second resistor, and is configured to filter an ac signal in the device power supply signal.
In one embodiment, the filtering module comprises a fourth resistor and a second capacitor connected in parallel; one end of the fourth resistor and one end of the second capacitor are both connected with the equipment power supply, and the other end of the fourth resistor and the other end of the second capacitor are both connected with the common end of the first resistor and the second resistor.
The above-mentioned power supply system includes: the power supply end equipment and the switch control module; the switch control module comprises an interface and a control switch; the control switch is provided with a control end, a first connecting end and a second connecting end; the control end is arranged in the interface, the first connecting end is connected with an equipment power supply, the second connecting end is connected with the power supply end equipment, and the power supply end equipment is connected with the power receiving end equipment through the interface; when the power receiving end equipment is connected with the power supply end equipment through the interface, the control end is conducted so that the equipment power supply supplies power to the power supply end equipment, and the power supply end equipment supplies power to the power receiving end equipment through the interface. The control switch is arranged between the equipment power supply and the power supply end equipment, the control end of the control switch is arranged in the interface, and only when the joint of the power receiving end equipment is inserted into the interface, the control end is conducted, the equipment power supply can supply power to the power supply end equipment, so that the loss of the power supply system in an idle state can be reduced, and energy conservation and emission reduction are realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system according to an embodiment;
FIG. 2 is a schematic structural diagram of the switch control module shown in FIG. 1;
fig. 3 is a schematic structural diagram of a power supply system according to another embodiment;
fig. 4 is a schematic structural diagram of the switch control circuit shown in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application 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 present application and are not intended to limit the present application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.
Fig. 1 is a schematic structural diagram of a power supply system provided in one embodiment. With reference to figures 1 and 2 of the drawings,
the power supply system 100 includes: a power supply end device 120 and a switch control module 130.
The switch control module 130 includes an interface 131 and a control switch 132; the control switch 132 is provided with a control terminal 133, a first connection terminal and a second connection terminal; the control terminal 133 is disposed inside the interface 131, the first connection terminal is connected to the device power source 110, the second connection terminal is connected to the power supply terminal device 120, and the power supply terminal device 120 is connected to the power receiving terminal device 140 through the interface 131; when the power receiving end device 140 is connected to the power supply end device 120 through the interface 131, the control end 133 is turned on to enable the device power source 110 to supply power to the power supply end device 120, and the power supply end device 120 supplies power to the power receiving end device 140 through the interface 131.
The Power supply system 100 of this embodiment may be a POE Power supply system 100, where POE (Power Over Ethernet, Power Over Ethernet technology) refers to a technology that can provide dc Power for a part of IP-based terminal devices while transmitting data signals on an existing Ethernet cat.5 wiring infrastructure, and the POE technology is widely applied to the fields of network monitoring, wireless local area network, and the like. The device power supply 110 supplies power to each module in the power supply system 100, and the voltage of the device power supply 110 is usually set according to the requirement of the powered device. For example, it may be 44V-57V.
In the PoE Power supply system 100, the Power source Equipment 120 (PSE) is called a Power Sourcing Equipment (PSE). One end of the power supply end device 120 is connected to the device power supply 110, and the other end of the power supply end device 120 is connected to the power receiving end device 140, and is responsible for injecting power received from the device power supply 110 into the ethernet line, implementing power planning and management, and then implementing power supply to the power receiving end device 140 through the ethernet line. When the powered end device 120 is deployed in a network, the powered end device 120 initially outputs a small voltage at the port until it detects that the cable termination is connected to a powered end device 140 that supports the IEEE 802.3af standard. When the power receiving end device 140 is detected, the power providing end device 120 may classify the power receiving end device 140 and evaluate the power loss required by the power receiving end device 140. During a start-up period of a configurable time (typically less than 15 μ s), the power supply device 120 starts to supply power from a low voltage to the power receiving device 140 until a stable and reliable dc power supply is provided.
The switch control module 130 includes an interface 131 and a control switch 132; the control switch 132 is provided with a control terminal 133, a first connection terminal and a second connection terminal, wherein the first connection terminal is connected to the device power source 110 and is used for receiving the current provided by the device power source 110, the second connection terminal is connected to the power supply terminal device 120 and is used for supplying the received current to the power supply terminal device 120, that is, the device power source 110 supplies power to the power supply terminal device 120 through the control switch 132, and the power supply terminal device 120 supplies power to the power receiving terminal device 140 through the interface 131.
Specifically, the connector 141 of the power receiving end device 140 is inserted into the interface 131 of the switch control module 130, and the interface 131 is connected with the power supply end device 120, so that the connection between the power receiving end device 140 and the power supply end device 120 is realized. The interface 131 of the switch control module 130 is provided with a control terminal 133, when the connector 141 of the power receiving terminal device 140 is inserted into the interface 131 of the power supplying terminal device 120, the control terminal 133 controls to conduct a connection path between the device power source 110 and the power supplying terminal device 120, so that the device power source 110 supplies power to the power supplying terminal device 120, and the power supplying terminal device 120 supplies power to the power receiving terminal device 140.
In the power supply system 100 provided in this embodiment, the control switch 132 is arranged between the device power supply 110 and the power supply end device 120, and the control end 133 of the control switch 132 is arranged in the interface 131, and only when the connector 141 of the power receiving end device 140 is inserted into the interface 131 of the switch control module 130, the control end 133 can be turned on, so that the device power supply 110 is controlled to supply power to the power supply end device 120, and further, the loss of the power supply system 100 in an idle state can be reduced, and energy saving and emission reduction are achieved.
In one embodiment, as shown in fig. 2, the interface 131 in the switch control module is an RJ45 interface 131. RJ45 interface 131 is an ethernet port that we often see, for a total of 8 pins. The RJ45 interface 131 has a housing, a slot is formed on one surface of the housing, eight pins are disposed in the slot, the eight pins include a pin connected to an ethernet signal line, and when the connector is plugged into the RJ45 interface 131, the pin connected to the ethernet signal line is connected to a pin connected to the ethernet signal line in the connector, so as to transmit an ethernet signal and supply power to a power receiving device connected to the connector while transmitting the ethernet signal.
According to the embodiment of the application, the control terminal 133 is arranged in the RJ45 interface 131, the control terminal 133 includes a first pin 1331 and a second pin 1332, when the connector 141 of the power receiving terminal device is inserted into the RJ45 interface 131, the first pin 1331 and the second pin 1332 are pushed to the second pin 1332 by the connector 141 of the power receiving terminal device, so that the first pin 1331 and the second pin 1332 are contacted, and thus a connection path between a device power supply and a power supply terminal device can be conducted, the device power supply supplies power to the power supply terminal device, and the power supply terminal device 120 supplies power to the power receiving terminal device; when the connector 141 of the power receiving end device is not inserted into the RJ45 interface 131, the first pin 1331 and the second pin 1332 are in an off state, i.e., the connection path between the device power supply and the power supply end device is disconnected, and the device power supply does not supply power to the power supply end device. The on-off state of the control end 133 is determined by the state that the power receiving end equipment connector 141 is inserted into the RJ45 interface 131, the control end 133 can be equivalent to a switch, the switch is connected in series in a power supply path of an equipment power supply and power supply end equipment, and the power supply end equipment can be powered to normally work when the power receiving end equipment is connected; when no receiving end equipment is accessed, the power supply end equipment is not powered on and has no power consumption.
In an embodiment, as shown in fig. 2 and fig. 3, the switch control module further includes a switch control circuit 150, the switch control circuit 150 includes a first connection end, a second connection end, and a third connection end, the first connection end of the switch control circuit 150 is connected to the device power source 110, the second connection end of the switch control circuit 150 is connected to the power supply device 120, the third connection end of the switch control circuit 150 is connected to the second connection end of the control switch 132, the first connection end of the control switch 132 is connected to the dc power source, and when the control end 133 of the control switch 132 is turned on, the device power source 110 supplies power to the power supply device 120.
Specifically, when the connector 141 of the power receiving end device 140 is connected to the RJ45 interface 131, the control end 133 is turned on, the switch control circuit 150 is turned on, the device power source 110 inputs current to the power supply end device 120 to supply power to the power supply device, and the power supply end device 120 supplies power to the power receiving end device 140 through the interface 131. The control switch 132 and the switch control circuit 150 jointly control the power supply paths of the device power source 110 and the power supply end device 120, so as to improve the safety and stability of the power supply system 100.
In one embodiment, as shown in fig. 2, 3 and 4, the switch control circuit 150 includes: a first switch control tube M3 and a second switch control tube M1;
the first switch control tube M3 includes a first input terminal, a second input terminal and a first output terminal, and the second switch control tube M1 includes a third input terminal, a fourth input terminal and a second output terminal, wherein the first input terminal is connected to the second connection terminal of the control switch 132, the second input terminal is grounded, the first output terminal is connected to the third input terminal through a first resistor R13 and a second resistor R2, the fourth input terminal is connected to the device power supply 110, and the second output terminal is connected to the power supply terminal device 120. The first switch control tube M3 and the second switch control tube M1 may be any one of a triode or a field effect transistor. In this embodiment, the first switching control tube M3 and the second switching control tube M1 are both field effect tubes as an example.
When the connector of the power receiving terminal is connected to the interface 131 of the RJ45, the control terminal 133 of the control switch 132 is turned on, the first connection terminal of the control switch 132 is connected to the dc power supply, the second connection terminal of the control switch 132 is connected to the gate of the first switch control transistor M3, and the source of the first switch control transistor M3 is grounded. The direct current power supply inputs current to the gate of the first switch control tube M3 through the control switch 132, and since the source of the second switch control tube M1 is connected to the device power supply 110, the current of the device power supply 110 passes through the fourth resistor R1 and the first resistor R13 and then is input to the drain of the first switch control tube M3, the current of the gate of the first switch control tube M3 is smaller than the current of the drain, and the first switch control tube M3 is turned on. The current of the drain of the first switch control tube M3 flows into the gate of the second switch control tube M1, and since the source of the second switch control tube M1 is connected to the device power source 110, the second switch control tube M1 is turned on and outputs the current to the power supply device 120 through the drain, and the power supply device 120 supplies power to the power receiving device 140.
When the connector of the power receiving end is not connected to the interface 131 of the RJ45, the switch control module 130 is turned off, so that the first switch control tube M3 and the second switch control tube M1 are both in an off state, and no current is input to the power supply end device 120 at the second output end of the second switch control tube M1, so that no power consumption is caused by the power supply end device 120 when the power receiving end device 140 is not connected.
The switch control circuit 150 further includes a diode D11, and the second connection terminal of the control switch 132 is connected to the first input terminal of the first switch control transistor M3 through a diode D11.
The switch control circuit 150 further comprises a third resistor R18 and a first capacitor C5 connected in parallel; one ends of the third resistor R18 and the first capacitor C5 are both connected with the cathode of the diode D11, and the other ends of the third resistor R18 and the first capacitor C5 are both grounded.
The switch control circuit 150 further includes a filter module, one end of the filter module is connected to the device power supply 110, and the other end of the filter module is connected to a common terminal of the first resistor R13 and the second resistor R2, and is configured to filter an ac signal in the device power supply 110 signal. The filtering module may include a fourth resistor R1 and a second capacitor C2 connected in parallel; one ends of the fourth resistor R1 and the second capacitor C2 are both connected with the equipment power supply 110, and the other ends of the fourth resistor R1 and the second capacitor C2 are both connected with the common end of the first resistor R13 and the second resistor R2. The device power supply 110 may be grounded through a capacitor.
The switch control circuit 150 further includes a fifth resistor R3 and a third capacitor C4 connected in series, one end of the fifth resistor R3 is connected to the drain of the second switch control transistor M1, and one end of the third capacitor C4 is connected to the common end of the first resistor R13 and the second resistor R2.
It should be understood that the above switch control circuit 150 is only an example, and the specific form of the switch control circuit 150 is not limited, and a circuit capable of achieving the switch control function may be used.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A power supply system, comprising: the power supply end equipment and the switch control module; the switch control module comprises an interface and a control switch; the control switch is provided with a control end, a first connecting end and a second connecting end; the control end is arranged in the interface, the first connecting end is connected with an equipment power supply, the second connecting end is connected with the power supply end equipment, and the power supply end equipment is connected with the power receiving end equipment through the interface; when the power receiving end equipment is connected with the power supply end equipment through the interface, the control end is conducted so that the equipment power supply supplies power to the power supply end equipment, and the power supply end equipment supplies power to the power receiving end equipment through the interface.
2. The power supply system of claim 1 wherein said interface is an RJ45 interface.
3. The power supply system according to claim 2, wherein the control terminal comprises a first pin and a second pin, and the connector of the power receiving terminal device pushes the first pin to contact with the second pin when being connected to the interface, so as to conduct a connection path between the power supplying terminal device and the device power supply.
4. The power supply system according to claim 1, wherein the switch control module further comprises a switch control circuit, the switch control circuit comprises a first connection end, a second connection end and a third connection end, the first connection end of the switch control circuit is connected with the equipment power supply, the second connection end of the switch control circuit is connected with the power supply end equipment, the third connection end of the switch control circuit is connected with the second connection end of the control switch, the first connection end of the control switch is connected with the direct current power supply, and when the control end of the control switch is turned on, the equipment power supply supplies power to the power supply end equipment.
5. The power supply system of claim 4, wherein the switch control circuit comprises: a first switch control tube and a second switch control tube;
the first switch control tube comprises a first input end, a second input end and a first output end, the second switch control tube comprises a third input end, a fourth input end and a second output end, wherein the first input end is connected with the second connecting end of the control switch, the second input end is grounded, the first output end is connected to the third input end through a first resistor and a second resistor, the fourth input end is connected with the equipment power supply, and the second output end is connected with the power supply end equipment.
6. The power supply system of claim 5, wherein the first switch control transistor and the second switch control transistor are any one of a triode and a field effect transistor.
7. The power supply system of claim 6, wherein the switch control circuit further comprises a diode, and the second connection terminal of the control switch is connected to the first input terminal of the first switch control tube through the diode.
8. The power supply system of claim 7, wherein the switch control circuit further comprises a third resistor and a first capacitor connected in parallel; one ends of the third resistor and the first capacitor are connected with the cathode of the diode, and the other ends of the third resistor and the first capacitor are grounded.
9. The power supply system of claim 8, wherein the switch control circuit further comprises a filter module, one end of the filter module is connected to the device power supply, and the other end of the filter module is connected to a common terminal of the first resistor and the second resistor, and is configured to filter an ac signal in the device power signal.
10. The power supply system of claim 9, wherein the filtering module comprises a fourth resistor second capacitor connected in parallel; one end of the fourth resistor and one end of the second capacitor are both connected with the equipment power supply, and the other end of the fourth resistor and the other end of the second capacitor are both connected with the common end of the first resistor and the second resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920839264.4U CN209913839U (en) | 2019-06-05 | 2019-06-05 | Power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920839264.4U CN209913839U (en) | 2019-06-05 | 2019-06-05 | Power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN209913839U true CN209913839U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920839264.4U Active CN209913839U (en) | 2019-06-05 | 2019-06-05 | Power supply system |
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|---|---|
| CN (1) | CN209913839U (en) |
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- 2019-06-05 CN CN201920839264.4U patent/CN209913839U/en active Active
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