TW202118215A - Power supply device - Google Patents

Abstract

A power supply device coupled to a power device, includes an output connection port and a controller. When the output connection port is coupled to a connection cable, the controller is activated to generate a handshake signal, so as to communicate with the power device. When the power device is determined as a suppliable device via the handshake signal, the controller controls the power supply device to supply the power to the power device through the connection cable. When the connection cable is not connected to the output connection port, the controller is disabled and does not generate the handshake signal.

Description

Power supply device

The present invention relates to a power supply device, and particularly relates to a power supply device that supplies power through an Ethernet line.

Most of the products on the market at present are because the power supply device (Power Source Equipment) and the load device (Power Device) do full-time handshaking signal communication to determine whether the power supply device should supply power to the load device. Therefore, even if the load device is not When coupled to a power supply device, the power supply device will continue to send handshake signals for detection, causing power loss, and making the current Ethernet power supply devices unable to meet the requirements of current efficiency energy regulations, such as: The Department of Energy (DoE) in the United States, the EC certificate of conformity (EC CoC) in Europe, and so on.

In order to reduce the power consumption under no load and meet the requirements of current efficiency energy regulations, it is necessary to optimize the power supply device and its control method.

In view of this, the present invention provides a power supply device coupled to a power device, including: an output port and a controller. The output port is used for coupling to a connection line. When the connection line is coupled to the output port, the controller is activated to generate a handshake signal to communicate with the power device. When it is determined through the handshake signal that the power device is an object capable of supplying power, the controller controls the power supply device to supply power to the power device via the connection line. When the connection line is not coupled to the output port, the controller is disabled and the handshake signal is not generated.

According to an embodiment of the present invention, the power supply device further includes a power converter for converting the external voltage to the voltage and/or current required by the power device when the power device is judged to be an object capable of supplying power, and It is used to convert the external voltage into a supply voltage, wherein the controller is activated by the supply voltage.

According to an embodiment of the present invention, the power supply device further includes an input port and a data integration unit. The input port receives an external data. The data integration unit provides the above-mentioned external data and the voltage and/or current required by the above-mentioned electric device to the above-mentioned electric device through the above-mentioned output connection port and the above-mentioned connecting wire.

According to an embodiment of the present invention, the power supply device further includes a trigger unit. When the connection line is coupled to the output port, the trigger unit is triggered, so that the supply voltage is provided to the controller via the trigger unit, so as to activate the controller.

According to an embodiment of the present invention, when the connection line is not coupled to the output port, the trigger unit is not triggered, so that the supply voltage cannot be supplied to the controller via the trigger unit, thereby disabling the controller .

According to an embodiment of the present invention, the above-mentioned trigger unit includes an elastic sheet and a metal contact. The elastic piece is coupled to a node that provides the above-mentioned supply voltage. The metal contact is coupled to the above-mentioned controller. When the connecting wire is not coupled to the output port, the elastic piece is electrically isolated from the metal contact.

According to an embodiment of the present invention, the above-mentioned trigger unit includes an elastic sheet and a metal contact. The elastic piece is coupled to a node that provides the above-mentioned supply voltage. The metal contact is coupled to the above-mentioned controller. When the connecting wire is coupled to the output port, one end of the connecting wire abuts against the elastic piece to actuate the elastic piece and contact the metal contact, so that the elastic piece is electrically coupled to the metal contact.

According to an embodiment of the present invention, the power supply device further includes a detection unit that determines whether the connection line is coupled to the output port. When the connection line is coupled to the output port, the detection unit provides the supply voltage to the controller to activate the controller; when the connection line is not coupled to the output port, the detection unit It is not mentioned that the supply voltage is supplied to the controller to disable the controller.

According to an embodiment of the present invention, the aforementioned detection unit includes a light source and a light sensor. The light source is used to generate a light beam. The light sensor is used to detect the light beam. When the connection line is coupled to the output connection port, the light sensor does not detect the light beam. At this time, the detection unit provides the supply voltage to the controller.

According to an embodiment of the present invention, the aforementioned detection unit includes a magnetic field generator and a magnetic field receiver. The magnetic field generator is used to generate a magnetic field. The magnetic field receiver is used for receiving the above-mentioned magnetic field. When the connection line is coupled to the output port, the magnetic field receiver does not receive the magnetic field, and the detection unit provides the supply voltage to the controller at this time.

The following description is an embodiment of the present invention. Its purpose is to exemplify the general principles of the present invention, and should not be regarded as a limitation of the present invention. The scope of the present invention should be defined by the scope of the patent application.

It should be noted that the content disclosed below can provide multiple embodiments or examples for practicing the different features of the present invention. The specific component examples and arrangements described below are only used to briefly illustrate the spirit of the present invention, and are not used to limit the scope of the present invention. In addition, the following description may repeatedly use the same component symbols or words in multiple examples. However, the purpose of repeated use is only to provide a simplified and clear description, and is not used to limit the relationship between the multiple embodiments and/or configurations discussed below. In addition, the description of a feature connected to, coupled to, and/or formed on another feature described in the following specification may actually include a plurality of different embodiments, including direct contact of these features, or include other additional features. The features of are formed between these features, etc., so that these features are not in direct contact.

FIG. 1 shows a block diagram of a power supply device according to an embodiment of the invention. As shown in FIG. 1, the power supply device 100 includes a power converter 110, a controller 120, an input port 130, a data integration unit 140, an output port 150, and a trigger unit 160. In this embodiment, when the power device 10 is connected to the power supply device 100 via the connection line 170 (for example, an Ethernet cable), the power supply device 100 can not only use the data received from the input port 130 via the connection line 170 Transmitted to the power device 10, the power device 10 can also be powered by the externally received voltage (for example, commercial power) via the power converter 110 and simultaneously via the connection line 170.

Specifically, when the power device 10 is connected to the output port 150 of the power supply device 100 through the connection line 170, the controller 120 generates the handshaking signal HS and transmits the handshaking signal HS to the power device 10 via the connection line 170. Communication is carried out to determine whether the power device 10 is a compliant power device. If it is determined that the power device 10 conforms to the specification, the controller 120 can determine the power/current required by the power device 10 through the communication process (for example, determine how much power should be provided to the power device 10 through the current signal), and allow the power supply The device 100 supplies power to the power device 10. Since the power supply agreement has been established, the controller 120 does not need to communicate with the power device 10 anymore, so it stops generating the handshaking signal HS at this time. If it is determined that the power device 10 does not comply with the specification, the controller 120 will prohibit the power supply device 100 from supplying power to the power device 10, and will continue to periodically send a handshaking signal HS for confirmation.

On the other hand, when the power device 10 is not connected to the output port 150 of the power supply device 100, in the conventional method, the controller 120 will continue to periodically generate and send the handshaking signal HS to confirm the power device 10Whether the power supply device 100 has been connected. However, such an approach will cause the controller 120 to continue to consume power to generate the handshaking signal HS for the confirmation operation even when the power supply device 100 is not connected to the power device 10.

Since the conventional practice will derive the problem that the power supply device 100 still has power consumption when the power supply device 100 is not connected to the power device 10. In this embodiment, when the power supply device 100 is not connected to the power device 10, the controller 120 will not start, nor will it generate the handshake signal HS, so as to reduce the power loss of the power supply device 100 when there is no load. The specific implementation of the energy efficiency requirements of the regulations will be explained as follows.

According to an embodiment of the present invention, the power supply device 100 is compliant with IEEE 802.3 at Power over Ethernet (PoE) specifications. According to another embodiment of the present invention, the power supply device 100 is compliant with the IEEE 802.3 af Ethernet power supply specification. According to another embodiment of the present invention, the power supply device 100 conforms to the IEEE 802.3 bt Ethernet power supply specification.

In this embodiment, the power converter 110 is used to convert an external voltage VEXT (for example, a commercial power) into a supply voltage VDD. In some embodiments, the power converter 110 may be an AC/DC converter for converting the AC voltage provided by the mains power into a DC voltage. The DC voltage can be used for components in the power supply device 100 (for example, the controller 120). And/or a device outside the power supply device 100 (for example, the power device 10) supplies power.

The controller 120 receives the power of the supply voltage VDD via the triggered trigger unit 160 (details will be described later), and generates the handshaking signal HS. According to an embodiment of the present invention, when the controller 120 confirms through the handshaking signal HS that the power device 10 is an object capable of supplying power (that is, the power device 10 complies with the Ethernet power supply specification), the controller 120 stops sending Handshake signal HS. In addition, at this time, the controller 120 can learn the load condition of the power device 10 through the process of communicating with the power device 10, and control the power converter 110 to convert the external voltage VEXT to provide the voltage/current required by the power device 10. The voltage/current can be provided to the power device 10 through the data integration unit 140, the output port 150, and the connection line 170 for power supply.

According to another embodiment of the present invention, when the controller 120 confirms through the handshake signal HS that the power device 10 is not an object capable of supplying power (that is, the power device 10 does not comply with the Ethernet power supply specification), the controller 120 The power supply device 100 is controlled not to supply power to the power device 10, and the handshaking signal HS is continuously sent periodically to confirm the status of the power device 10.

The input port 130 receives the external data DEXT and transmits the external data DEXT to the data integration unit 140. . When the controller 120 confirms through the handshaking signal HS that the power device 10 is an object capable of supplying power, the data integration unit 140 can transmit the external data DEXT to the power device 10 via the output port 150 and the connection line 170.

The output connection port 150 is used for coupling to the connection line 170, wherein the connection line 170 has a connector (not shown in the first figure) that is coupled to the output connection port 150. According to an embodiment of the present invention, the output port 150 can be a socket for receiving an RJ-45 connector, and the connection line 170 is a network cable with an RJ-45 connector. When the output port 150 is coupled to the cable, it means that the output port 150 accommodates the RJ-45 connector of the network cable.

In this embodiment, the power supply device 100 further includes a trigger unit 160 for triggering when the connection line 170 is coupled to the output port 150. According to an embodiment of the present invention, when the trigger unit 160 is triggered, the supply voltage VDD output by the power converter 110 can be directly provided to the controller 120 via the trigger unit 160, so as to supply power to the controller 120 to activate the controller 120, so that The controller 120 sends a handshaking signal HS to communicate with the power device 10. According to another embodiment of the present invention, when the trigger unit 160 is not triggered, the supply voltage VDD does not supply power to the controller 120, so the controller 120 does not send the handshake signal HS to save the power consumption of the power supply device 100, and thus Comply with the requirements of efficiency energy regulations. According to an embodiment of the present invention, in order to more accurately detect whether the connector of the connecting line 170 is inserted into the output port 150, the trigger unit 160 is located in the output port 150.

In one embodiment, the trigger unit 160 includes a first connection portion 161 and a second connection portion 162, wherein when no force is applied to the first connection portion 161, the first connection portion 161 and the second connection portion 162 are electrically connected to each other. Sexual isolation (that is, the trigger unit 160 is not triggered), and when a force is applied to the first connection portion 161, the first connection portion 161 is movably contacted with the second connection portion to form an electrical connection (that is, The trigger unit 160 is triggered). Specifically, when the connection line 170 is not coupled to the output port 150, the first connection portion 161 will not receive any force to maintain the status quo, and is electrically isolated from the second connection portion 162, so that the supply voltage VDD cannot be It is provided to the controller 120 via the trigger unit 160 so that the controller 120 is disabled. When the connecting wire 170 is coupled to the output port 150, the first connecting portion 161 is subjected to abutting and pushing force from one end of the connecting wire 170 (for example, the connector), causing displacement and finally contacting the second connecting portion 162. An electrical connection is formed so that the supply voltage VDD can be provided to the controller 120 via the trigger unit 160, so that the controller 120 is activated. The specific implementation of the trigger unit 160 will be further described below.

FIG. 2 is a schematic diagram of the trigger unit according to an embodiment of the invention. As shown in Figure 2, the trigger unit 200 includes an elastic piece 210 (that is, the first connecting portion 161 in FIG. 1) and a metal contact 220 (that is, the second connecting portion 162 in FIG. 1), wherein the elastic piece 210 The metal contact 220 is coupled to the node receiving the supply voltage VDD (for example, the output terminal of the power converter 110), and the metal contact 220 is coupled to the controller 120 in FIG. According to an embodiment of the present invention, the trigger unit 200 corresponds to the trigger unit 160 in FIG. 1.

FIG. 3 is a schematic diagram showing the output port according to an embodiment of the present invention. As shown in FIG. 3, the output connection port 310 is used to accommodate the connector 320 of the connection line. According to an embodiment of the present invention, the connecting wire is used to couple to the power supply device 100 and the power device 10 in FIG. 1, and the output port 310 corresponds to the output port 150 in FIG. 1. According to an embodiment of the present invention, the trigger unit 200 is located in the output port 310.

According to an embodiment of the present invention, when the connector 320 is inserted into the output port 310 (that is, the connector 320 is inserted into the output port 310 in the insertion direction D), the connector 320 abuts the elastic piece 210 to actuate the elastic piece 210 (for example, , Press down), so that the elastic sheet 210 directly contacts the metal contact 220 (that is, the elastic sheet 210 is electrically connected to the metal contact 220). In this embodiment, electrically connecting the elastic sheet 210 to the metal contact 220 means that the trigger unit 200 is triggered. In other words, when the connector 320 is inserted into the output port 310, the elastic piece 210 is electrically connected to the metal contact 220, and the supply voltage VDD supplies power to the controller 120 through the elastic piece 210 and the metal contact 220, so that the controller 120 The handshaking signal HS is activated and sent to communicate with the power device 10 connected via the connection line 170 to determine whether to supply power to the power device 10.

According to another embodiment of the present invention, when the connector 320 is not inserted into the output port 310, the elastic piece 210 and the metal contact 220 are electrically isolated. In this embodiment, electrically isolating the elastic sheet 210 from the metal contact 220 (or not electrically connecting) means that the trigger unit 200 is not triggered. Therefore, at this time, the controller 120 cannot receive the supply voltage VDD and start, and will not generate the handshaking signal HS to communicate with the power device, thereby reducing the power supply device 100 in the no-load condition (that is, not connected to the power device 10). ) Power loss.

It is worth mentioning that the trigger unit in this embodiment includes mechanical structures such as elastic sheets and metal contacts without other circuit elements, and whether it is triggered is determined by physical operations. In other words, in the embodiment of the present invention, determining whether the cable is coupled to the output port (that is, whether the connector is inserted into the output port) is not detected through electrical detection, for example, through a component in the power supply device. Signal (for example, current), and determine whether the connection line is coupled to the output port according to whether the corresponding return signal (for example, another current) is received. Instead, the trigger unit in this embodiment is completely physically detected. When the connector is inserted into the output port, the shrapnel is connected to the connector and finally contacts the metal contact, thereby judging that the connector is fully inserted into the output connection Port (that is, the cable has been coupled to the output port). The advantage of this approach is that the judgment can be fast and accurate, and the cost of its setting is low.

However, the present invention is not limited to this. In other embodiments, other detecting elements can also be used to determine whether the connection line is coupled to the output port, which will be described as follows.

FIG. 4 is a block diagram of a power supply device according to another embodiment of the present invention. Comparing the power supply device 400 with the power supply device 100 in FIG. 1, the trigger unit 160 in FIG. 1 is replaced with the detection unit 460 in FIG. 4, and the rest of the components are the same.

The detection unit 460 is used to determine whether the connection line 170 is coupled to the output port 150, and to determine whether to provide the supply voltage VDD to the controller 120 to generate the handshaking signal HS. According to an embodiment of the present invention, when the detecting unit 460 determines that the connection line 170 is coupled to the output port 150, the detecting unit 160 provides the supply voltage VDD to the controller 120 to power the controller 120, and the controller 120 is controlled The device 120 sends a handshaking signal HS to communicate with the power device 10. According to an embodiment of the present invention, in order to more accurately detect whether the connector of the connection line 170 is inserted into the output port 150, the detection unit 460 is located in the output port 150.

According to another embodiment of the present invention, when the detecting unit 460 determines that the connection line 170 is not coupled to the output port 150, the detecting unit 460 does not provide the supply voltage VDD to the controller 120 to disable the controller 120 , To save the power consumption of the power supply device 400, and then meet the requirements of the efficiency energy regulations.

Fig. 5 shows a block diagram of the detection unit according to another embodiment of the present invention. As shown in FIG. 5, the detection unit 500 includes a light source 510 and a light sensor 520. According to an embodiment of the present invention, the detection unit 500 is located in the output port 150 in FIG. 4.

The light source 510 is used to generate the light beam L, and the light sensor 520 is used to detect the light beam L. The light sensor 520 further includes a first light node 521 and a second light node 522. The first light node 521 is coupled to a node that provides a supply voltage VDD, and the second light node 522 is coupled to the controller in FIG. 4 120. When the light sensor 520 detects the light beam L, the light sensor 520 electrically separates the first light node 521 and the second light node 522. When the light sensor 520 cannot detect the light beam L, the light sensor 520 electrically couples the first light node 521 to the second light node 522.

According to an embodiment of the present invention, when the connector 50 of the connection line 170 is inserted into the output port 150 and is located between the light source 510 and the light sensor 520, the connector 50 blocks the light beam L generated by the light source 510, so that the light The sensor 520 cannot detect the light beam L and electrically couples the first light node 521 to the second light node 522. That is, at this time, the light sensor 520 provides the supply voltage VDD to the controller 120 so that the controller 120 sends the handshaking signal HS to communicate with the power device 10.

According to another embodiment of the present invention, when the connector 50 is not inserted into the output port 310, the light sensor 520 detects the light beam L and electrically separates the first light node 521 and the second light node 522. That is, the light sensor 520 does not provide the supply voltage VDD to the controller 120, so that the controller 120 does not generate the handshake signal HS, so as to reduce the power loss of the power supply device 400 under no-load conditions.

Fig. 6 shows a block diagram of the detection unit according to another embodiment of the present invention. As shown in FIG. 6, the detection unit 600 includes a magnetic field generator 610 and a magnetic field receiver 620. According to an embodiment of the present invention, the detection unit 600 is located in the output port 150 in FIG. 4.

The magnetic field generator 610 is used to generate the magnetic field M, and the magnetic field receiver 620 is used to receive the magnetic field M. The magnetic field receiver 620 further includes a first magnetic field node 621 and a second magnetic field node 622. The first magnetic field node 621 is coupled to a node that provides a supply voltage VDD, and the second magnetic field node 622 is coupled to the controller 120 in FIG. 4 . When the magnetic field receiver 620 detects the magnetic field M, the magnetic field receiver 620 electrically separates the first magnetic field node 621 and the second magnetic field node 622. When the magnetic field receiver 620 cannot detect the magnetic field M, the magnetic field receiver 620 electrically couples the first magnetic field node 621 to the second magnetic field node 622.

According to an embodiment of the present invention, when the connector 60 of the connecting wire 170 is inserted into the output port 150 and is located between the magnetic field generator 610 and the magnetic field receiver 620, the connector 60 blocks the magnetic field M generated by the magnetic field generator 610 , So that the magnetic field receiver 620 cannot detect the magnetic field M and electrically couples the first magnetic field node 621 to the second magnetic field node 622. That is, at this time, the magnetic field receiver 620 provides the supply voltage VDD to the controller 120 so that the controller 120 sends the handshaking signal HS to communicate with the power device 10.

According to another embodiment of the present invention, when the connector 60 is not inserted into the output port 150, the magnetic field receiver 620 detects the magnetic field M and electrically separates the first magnetic field node 621 and the second magnetic field node 622. That is, the magnetic field receiver 620 does not provide the supply voltage VDD to the controller 120, so that the controller 120 does not generate the handshake signal HS, so as to reduce the power loss of the power supply device 400 under no-load conditions.

Determine whether to activate the controller by judging whether the connector of the cable is inserted into the output port, and then determine whether to generate a handshaking signal to communicate with the power device, which can effectively reduce the power loss of the power supply device under no load, thereby complying with the increasing Strict energy efficiency requirements. In addition, the implementation method of the present invention for judging whether the connector of the connection line is inserted into the output port is a physical operation. In other words, judging whether the cable is coupled to the output port (that is, whether the connector is inserted into the output port) is not through electrical detection, but through physical detection. When the connector is plugged into the output port, the shrapnel Linked with the connector and finally contacted with the metal contact, and then it is determined that the connector has been fully inserted into the output port (that is, the cable has been coupled to the output port). The advantage of this approach is that the judgment can be fast and accurate, and the cost of its setting is low.

The above are the summary features of the embodiment. Those skilled in the art should be able to easily use the present invention as a basis for design or adjustment to achieve the same purpose and/or achieve the same advantages of the embodiments described herein. Those with ordinary knowledge in the technical field should also understand that the same configuration should not deviate from the spirit and scope of this creation, and they can make various changes, substitutions and alternations without departing from the spirit and scope of this creation. The illustrative methods only represent exemplary steps, but these steps do not have to be performed in the order shown. Additional steps may be added, substituted, changed, and/or eliminated to adjust according to the situation, and are consistent with the spirit and scope of the disclosed embodiments.

100, 400: power supply device 110: power converter 120: Controller 130: input port 140: Data Integration Unit 150, 310: output port 160, 200: trigger unit 170: connection line 10: Power installation 210: shrapnel 220: Metal contacts 320, 50, 60: connector 460, 500, 600: detection unit 510: light source 520: light sensor 521: First ray node 522: Second ray node 610: Magnetic Field Generator 620: Magnetic Field Receiver 621: The first magnetic field node 622: The second magnetic field node VDD: supply voltage HS: Handshake signal DEXT: External data VEXT: External voltage L: beam M: magnetic field D: Insertion direction

Figure 1 shows a block diagram of a power supply device according to an embodiment of the present invention; Figure 2 is a schematic diagram showing the trigger unit according to an embodiment of the present invention; Figure 3 is a schematic diagram showing an output port according to an embodiment of the present invention; Figure 4 shows a block diagram of a power supply device according to another embodiment of the present invention; Figure 5 shows a block diagram of the detection unit according to another embodiment of the present invention; and Fig. 6 shows a block diagram of the detection unit according to another embodiment of the present invention.

100: Power supply device

110: power converter

120: Controller

130: input port

140: Data Integration Unit

150: output port

160: trigger unit

10: Power installation

VDD: supply voltage

HS: Handshake signal

DEXT: External data

VEXT: External voltage

Claims (11)

A power supply device, coupled to a power device via a connecting wire, includes: An output port for coupling to the above-mentioned connecting line; and A controller, wherein when the connection line is coupled to the output port, the controller is activated to generate a handshaking signal to communicate with the power device, wherein when the handshaking signal determines that the power device is When the object can be powered, the controller controls the power supply device to supply power to the power device via the connection line; when the connection line is not coupled to the output port, the controller is disabled and does not generate the communication Hold the signal. The power supply device described in item 1 of the scope of patent application includes: A power converter for converting an external voltage into the voltage and/or current required by the power device when the power device is judged to be an object capable of supplying power, and for converting the external voltage into a supply voltage, wherein The controller is activated by the supply voltage. The power supply device described in item 2 of the scope of patent application includes: An input port to receive an external data; and A data integration unit provides the above-mentioned external data and the voltage and/or current required by the above-mentioned electric device to the above-mentioned electric device through the above-mentioned output port and the above-mentioned connecting wire. The power supply device described in item 2 of the scope of patent application includes: A trigger unit, wherein when the connection line is coupled to the output port, the trigger unit is triggered, so that the supply voltage is provided to the controller via the trigger unit, so as to activate the controller. The power supply device described in item 4 of the scope of patent application, wherein when the connection line is not coupled to the output port, the trigger unit is not triggered, so that the supply voltage cannot be supplied to the controller through the trigger unit , In order to disable the above controller. The power supply device described in item 4 of the scope of patent application, wherein the trigger unit includes a first connecting portion and a second connecting portion, wherein the first connecting portion is not applied to the first connecting portion. The portion is electrically isolated from the second connecting portion, and when a force is applied to the first connecting portion, the first connecting portion moves to contact with the second connecting portion to form an electrical connection. The power supply device described in item 4 of the scope of patent application, wherein the above-mentioned trigger unit includes: A shrapnel coupled to a node that provides the above-mentioned supply voltage; and A metal contact, coupled to the above-mentioned controller; When the connecting wire is not coupled to the output port, the elastic piece is electrically isolated from the metal contact. The power supply device described in item 4 of the scope of patent application, wherein the above-mentioned trigger unit includes: A shrapnel coupled to a node that provides the above-mentioned supply voltage; and A metal contact, coupled to the above-mentioned controller; When the connecting wire is coupled to the output connection port, one end of the connecting wire abuts the elastic piece to actuate the elastic piece and contact the metal contact, so that the elastic piece and the metal contact are electrically coupled. The power supply device described in item 2 of the scope of patent application includes: A detection unit for determining whether the connection line is coupled to the output port, wherein when the connection line is coupled to the output port, the detection unit provides the supply voltage to the controller to activate the controller When the connection line is not coupled to the output port, the detection unit does not provide the supply voltage to the controller to disable the controller. The power supply device described in item 8 of the scope of patent application, wherein the detection unit includes: A light source for generating a light beam; and A light sensor for detecting the light beam, wherein when the connection line is coupled to the output port, the light sensor does not detect the light beam, and the detection unit will supply the voltage Provided to the above controller. The power supply device described in item 8 of the scope of patent application, wherein the detection unit includes: A magnetic field generator for generating a magnetic field; and A magnetic field receiver for receiving the magnetic field, wherein when the connecting wire is coupled to the output port, the magnetic field receiver does not receive the magnetic field, and the detection unit provides the supply voltage to the control Device.

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