Power supply system and network device

Abstract

According to the power supply system and the network equipment provided by the invention, the second detection voltage of the first connector is acquired through the first detection voltage provided by the voltage source, so that the type of a power line is identified according to the second detection voltage, the reliability of the power line is ensured, and the operation and maintenance cost of the network equipment is not increased. The power supply system may include a power supply module. The power module may include a voltage source, a sampling circuit, and a first connector, where the first connector may be configured to be connected to a power line, which may be connected to a power supply. The voltage source may be used to provide a first detection voltage for the first connector. The sampling circuit can be used for collecting a second detection voltage from the first connector and identifying the type of the power line according to the second detection voltage.

Description

Technical Field

[0001] This application relates to the field of communication network technologies, and more particularly, to a power supply system and a network device. Background Art

[0002] With the rapid development of communication network technologies, network devices have been widely used. A network device may include a power supply system and a terminal device. The power supply system may include a power module. The power module may be connected to a power supply through a power cord, and the power module may also be connected to the terminal device through a cable. Network devices have a long lifespan. When upgrading the power module during the lifecycle of a network device, the power cord needs to be upgraded synchronously. To ensure the compatibility of the power cord socket and avoid incorrect insertion of the power cord, the power supply system needs to have a function of identifying the type of the power cord.

[0003] Related technologies often set electronic chips and active devices in the power cord. The electronic chip can control the active device to send identification information indicating the type of the power cord (such as a 3kW power cord, a 4kW power cord, a 6kW power cord, etc.) to the terminal device, thereby realizing the identification of the type of the power cord. However, the setting of the electronic chip and the active device not only increases the cost of the power cord, but also, since the network device is required to operate reliably for a long time and the active device is relatively easy to be damaged, the reliability of the power cord is greatly reduced, and the operation and maintenance cost of the network device is increased.

[0004] Therefore, there is an urgent need for a power supply system that can identify the type of the power cord. Summary of the Invention

[0005] This application provides a power supply system and a network device. By collecting a second detection voltage of a first connector through a first detection voltage provided by a voltage source, the type of the power cord is identified according to the second detection voltage, and the reliability of the power cord is ensured, without increasing the operation and maintenance cost of the network device.

[0006] In a first aspect, this application provides a power supply system, which may include a power module. The power module may include a voltage source, a sampling circuit, and a first connector. Among them, the first connector may be used to connect to a power cord, and the power cord may be connected to a power supply.

[0007] The voltage source may be configured to: provide a first detection voltage for the first connector.

[0008] The sampling circuit may be configured to: collect a second detection voltage from the first connector and identify the type of the power cord according to the second detection voltage. Among them, the type of the power cord may include type A power cord, type B power cord, and type C power cord. Among them, the type A power cord may be a 4kW power cord, the type B power cord may be a 6kW power cord, the type C power cord may be a 3kW power cord, etc. This application does not make any limitations.

[0009] The power supply system provided by this application can collect the second detection voltage of the first connector through the first detection voltage provided by the voltage source, so as to identify the type of the power cord according to the second detection voltage. It can be seen that compared with the related art that sets electronic chips and active devices in the power cord, the power supply system provided by this application not only realizes the identification of the type of the power cord, but also ensures the reliability of the power cord and does not increase the operation and maintenance cost of network equipment.

[0010] Further, the first connector may include a first signal pin and a second signal pin. Alternatively, the first connector may include a first signal pin, a second signal pin, and a third signal pin.

[0011] The power cord may include a second connector, and the second connector may be used to connect to the first connector.

[0012] The second connector may be used to: short-circuit the first signal pin and the second signal pin. Alternatively, the second connector may be used to: short-circuit the third signal pin and the second signal pin.

[0013] The power supply system provided by this application may have a single power input scenario and a multi-power input scenario (such as a dual-power input scenario). Among them, in the single power input scenario, the power supply system is connected to a single power cord through the first connector to identify the type of the single power cord. In the multi-power input scenario, the power supply system is connected to multiple power cords (such as two power cords) through the first connector to identify the types of multiple power cords. That is to say, the power supply system provided by this application can identify the type of a single power cord through the first connector, and can also identify the types of multiple power cords through the first connector.

[0014] In a possible implementation, when the power supply system is used to identify the type of a single power cord, the power module may further include a first voltage-dividing resistor.

[0015] Optionally, the first end of the first voltage-dividing resistor is connected to the voltage source. The second end of the first voltage-dividing resistor may be connected to the sampling circuit. The second end of the first voltage-dividing resistor may also be connected to the second connector through the first signal pin of the first connector. The second signal pin of the first connector may be connected to the second connector and to the ground terminal. It can be seen that the power supply system provided by this application can identify the types of two types of power cords, such as 3kW power cords and 4kW power cords, through the voltage source, the first voltage-dividing resistor, and the sampling circuit.

[0016] In another possible implementation, when the power supply system is used to identify the types of multiple power cords, the power module may include multiple first connectors and multiple sampling circuits. The multiple power cords include multiple second connectors. The power module may further include a first voltage-dividing resistor and a second voltage-dividing resistor.

[0017] Among them, the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor can be connected to a voltage source. The second end of the first voltage-dividing resistor can be connected to the first sampling circuit among multiple sampling circuits, and the second end of the first voltage-dividing resistor can also be connected to one of the second connectors through the first signal pin of one of the first connectors. The second end of the second voltage-dividing resistor can be connected to the second sampling circuit among multiple sampling circuits, and the second end of the second voltage-dividing resistor can also be connected to another second connector through the first signal pin of another first connector. The second signal pin of one of the first connectors can be correspondingly connected to one of the second connectors, the second signal pin of another first connector can be correspondingly connected to another second connector, and the second signal pin of each first connector can be connected to the ground terminal. It can be seen that the power supply system provided by the present application can identify the types of two types of power lines such as 3kW power lines and 4kW power lines through the voltage source, the first voltage-dividing resistor, the second voltage-dividing resistor, the first sampling circuit, and the second sampling circuit.

[0018] Furthermore, when the power supply system is used to identify the type of a single power line, the power supply module may further include a third voltage-dividing resistor.

[0019] Optionally, the first end of the third voltage-dividing resistor can be connected to the sampling circuit. The first end of the third voltage-dividing resistor can be connected to the second connector through the first signal pin of the first connector. The second end of the third voltage-dividing resistor can be connected to the second connector through the third signal pin of the first connector. Or, the first end of the third voltage-dividing resistor can be connected to the second connector through the third signal pin of the first connector. The second end of the third voltage-dividing resistor can be connected to the second connector through the first signal pin of the first connector. It can be seen that the power supply system provided by the present application can identify the types of three types of power lines such as 3kW power lines, 4kW power lines, and 6kW power lines through the voltage source, the first voltage-dividing resistor, the third voltage-dividing resistor, and the sampling circuit.

[0020] Furthermore, when the power supply system is used to identify the types of multiple power lines, the power supply module may further include a third voltage-dividing resistor and a fourth voltage-dividing resistor.

[0021] Among them, the first end of the third voltage-dividing resistor can be connected to the first sampling circuit. The first end of the third voltage-dividing resistor can also be connected to one of the second connectors through the first signal pin of one of the first connectors. The second end of the third voltage-dividing resistor can be connected to one of the second connectors through the third signal pin of one of the first connectors. Or, the first end of the third voltage-dividing resistor can also be connected to one of the second connectors through the third signal pin of one of the first connectors. The second end of the third voltage-dividing resistor can be connected to one of the second connectors through the first signal pin of one of the first connectors.

[0022] Among them, the first end of the fourth voltage-dividing resistor can be connected to the second sampling circuit. The first end of the fourth voltage-dividing resistor can also be connected to another second connector through the first signal pin of another first connector. The second end of the fourth voltage-dividing resistor can be connected to another second connector through the third signal pin of another first connector. Or, the first end of the fourth voltage-dividing resistor can also be connected to another second connector through the third signal pin of another first connector. The second end of the fourth voltage-dividing resistor can be connected to another second connector through the first signal pin of another first connector.

[0023] It can be seen that the power supply system provided by this application can identify the types of three types of power lines, such as 3kW power lines, 4kW power lines, and 6kW power lines, through a voltage source, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor, a fourth voltage-dividing resistor, a first sampling circuit, and a second sampling circuit.

[0024] In some possible implementation manners, when the power supply system is used to identify the type of a single power line, the power supply module may include multiple sampling circuits. The power supply module may also include a first voltage-dividing resistor and a second voltage-dividing resistor.

[0025] Among them, the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor can be connected to the voltage source. The second end of the first voltage-dividing resistor is connected to the first sampling circuit among the multiple sampling circuits, and the second end of the first voltage-dividing resistor is also connected to the second connector through the first signal pin of the first connector. The second end of the second voltage-dividing resistor is connected to the second sampling circuit among the multiple sampling circuits, and the second end of the second voltage-dividing resistor is also connected to the second connector through the third signal pin of the first connector. The second signal pin of the first connector is connected to the second connector and can be connected to the ground terminal. It can be seen that the power supply system provided by this application can identify the types of three types of power lines, such as 3kW power lines, 4kW power lines, and 6kW power lines, through a voltage source, a first sampling circuit, a second sampling circuit, a first voltage-dividing resistor, and a second voltage-dividing resistor.

[0026] In some other possible implementation manners, when the power supply system is used to identify the types of multiple power lines, the power supply module includes multiple first connectors and multiple sampling circuits. The multiple power lines include multiple second connectors. The power supply module also includes a first voltage-dividing resistor, a second voltage-dividing resistor, a fifth voltage-dividing resistor, and a sixth voltage-dividing resistor.

[0027] Among them, the first ends of the first voltage-dividing resistor, the second voltage-dividing resistor, the fifth voltage-dividing resistor, and the sixth voltage-dividing resistor are each connected to a voltage source. The second end of the first voltage-dividing resistor is connected to the first sampling circuit among the multiple sampling circuits, and the second end of the first voltage-dividing resistor is also connected to one of the second connectors through the first signal pin of one of the first connectors. The second end of the second voltage-dividing resistor is connected to the second sampling circuit among the multiple sampling circuits, and the second end of the second voltage-dividing resistor is also connected to one of the second connectors through the third signal pin of one of the first connectors. The second signal pin of one of the first connectors can be connected to one of the second connectors and can be connected to the ground terminal.

[0028] The second end of the fifth voltage-dividing resistor is connected to the third sampling circuit among the multiple sampling circuits, and the second end of the fifth voltage-dividing resistor is also connected to another second connector through the first signal pin of another first connector. The second end of the sixth voltage-dividing resistor is connected to the fourth sampling circuit among the multiple sampling circuits, and the second end of the sixth voltage-dividing resistor is also connected to another second connector through the third signal pin of another first connector. The second signal pin of another first connector can be connected to another second connector and can be connected to the ground terminal.

[0029] It can be seen that the power supply system provided by this application can identify the types of three types of power lines, such as 3kW power lines, 4kW power lines, and 6kW power lines, through the voltage source, the first voltage-dividing resistor, the second voltage-dividing resistor, the third voltage-dividing resistor, the fourth voltage-dividing resistor, the first sampling circuit, the second sampling circuit, the third sampling circuit, and the fourth sampling circuit.

[0030] Furthermore, in addition to the power supply module, the power supply system may further include an input module (power entry module, PEM). The input module includes a third connector and a fourth connector.

[0031] The third connector can be used to connect to the first connector, and the fourth connector can be used to connect to the second connector.

[0032] In some possible implementation manners, when the power supply system is used to identify the type of a single power line, the input module may include a third connector and a fourth connector. The power supply module further includes a first voltage-dividing resistor.

[0033] Optionally, the first end of the first voltage-dividing resistor is connected to the voltage source. The second end of the first voltage-dividing resistor is connected to the sampling circuit. The second end of the first voltage-dividing resistor can also be connected to the first signal pin of the first connector. The first signal pin of the first connector can be connected to the second connector through the first signal pin of the third connector and the first signal pin of the fourth connector. The second signal pin of the first connector can be connected to the second connector through the second signal pin of the third connector and the second signal pin of the fourth connector, and the second signal pin of the first connector can be connected to the ground terminal. It can be seen that the power supply system provided by the present application can identify the types of three types of power lines, such as 3kW power lines, 4kW power lines, and 6kW power lines, through the voltage source, the first voltage-dividing resistor, the third connector, the fourth connector, and the sampling circuit.

[0034] In some other possible implementation manners, when the power supply system is used to identify the types of multiple power lines, the input module includes a third connector and multiple fourth connectors, the power supply module includes multiple sampling circuits, the multiple power lines include multiple second connectors, and the power supply module further includes a first voltage-dividing resistor and a second voltage-dividing resistor.

[0035] Among them, the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor can be connected to the voltage source. The second end of the first voltage-dividing resistor can be connected to the first sampling circuit among the multiple sampling circuits, and the second end of the first voltage-dividing resistor can also be connected to the first signal pin of the first connector. The second end of the second voltage-dividing resistor can be connected to the second sampling circuit among the multiple sampling circuits, and the second end of the second voltage-dividing resistor is also connected to the third signal pin of the first connector. The first signal pin of the first connector can be connected to one of the second connectors through the first signal pin of the third connector and the first signal pin of one of the fourth connectors. The third signal pin of the first connector can be connected to another second connector through the third signal pin of the third connector and the first signal pin of another fourth connector. The second signal pin of the first connector can be connected to the second signal pin of the third connector and can be connected to the ground terminal. The second signal pin of the third connector can be connected to one of the second connectors through the second signal pin of one of the fourth connectors, and the second signal pin of the third connector can also be connected to another second connector through the second signal pin of another fourth connector.

[0036] It can be seen that the power supply system provided by the present application can identify the types of three types of power lines, such as 3kW power lines, 4kW power lines, and 6kW power lines, through the voltage source, the first voltage-dividing resistor, the second voltage-dividing resistor, the third connector and the fourth connector, the first sampling circuit and the second sampling circuit.

[0037] In some possible implementation manners, when the power supply system is used to identify the type of a single power cord, the input module may include a third connector and a fourth connector. The power supply module may further include a first voltage-dividing resistor. The input module may further include a third voltage-dividing resistor.

[0038] Optionally, the first voltage-dividing resistor may be connected to a voltage source. The second end of the first voltage-dividing resistor may be connected to a sampling circuit, and the second end of the first voltage-dividing resistor may also be connected to the first signal pin of the third connector through the first signal pin of the first connector. The second signal pin of the first connector may be connected to the second signal pin of the third connector and may be connected to a ground terminal. The third voltage-dividing resistor may be connected between the first signal pin of the third connector and the third signal pin of the fourth connector. Alternatively, the third voltage-dividing resistor may be connected between the first signal pin of the third connector and the first signal pin of the fourth connector. The second signal pin of the third connector may be connected to the second signal pin of the fourth connector. The first signal pin, the second signal pin, and the third signal pin of the fourth connector may be respectively connected to a second connector.

[0039] It can be seen that the power supply system provided in this application can identify the types of three types of power cords, such as 3kW power cords, 4kW power cords, and 6kW power cords, through a voltage source, a first voltage-dividing resistor, a third connector, a fourth connector, and a sampling circuit.

[0040] In some other possible implementation manners, when the power supply system is used to identify the types of multiple power cords, the input module may include a third connector and multiple fourth connectors, the power supply module may include multiple sampling circuits, the multiple power cords may include multiple second connectors, and the multiple second connectors correspond to the multiple fourth connectors one by one. The power supply module may further include a first voltage-dividing resistor and a second voltage-dividing resistor. The input module may further include a third voltage-dividing resistor and a fourth voltage-dividing resistor.

[0041] Among them, the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor can be connected to a voltage source. The second end of the first voltage-dividing resistor can be connected to the first sampling circuit among a plurality of sampling circuits. The second end of the first voltage-dividing resistor can also be connected to the first signal pin of the third connector through the first signal pin of the first connector. The second end of the second voltage-dividing resistor can be connected to the second sampling circuit among a plurality of sampling circuits, and the second end of the second voltage-dividing resistor can also be connected to the third signal pin of the third connector through the third signal pin of the first connector. The second signal pin of the first connector can be connected to the second signal pin of the third connector and can be connected to a ground terminal. The third voltage-dividing resistor can be connected between the first signal pin of the third connector and the third signal pin of one of the fourth connectors. Alternatively, the third voltage-dividing resistor can be connected between the first signal pin of the third connector and the first signal pin of one of the fourth connectors. The fourth voltage-dividing resistor can be connected between the third signal pin of the third connector and the third signal pin of another fourth connector. Alternatively, the fourth voltage-dividing resistor can be connected between the third signal pin of the third connector and the first signal pin of another fourth connector. The second signal pin of the third connector is connected to the second signal pin of each fourth connector. The first signal pin, the second signal pin, and the third signal pin of one of the fourth connectors can be respectively connected to one of the second connectors, and the first signal pin, the second signal pin, and the third signal pin of the other fourth connector can be connected to the other second connector.

[0042] It can be seen that the power supply system provided by the present application can identify the types of three types of power lines, such as 3kW power lines, 4kW power lines, and 6kW power lines, through a voltage source, a first voltage-dividing resistor, a third connector, a fourth connector, and a sampling circuit.

[0043] In an example, the first connector may further include a first power supply pin. The friction distance of the first signal pin, the second signal pin, or the third signal pin can be less than the friction distance of the first power supply pin. Among them, the friction distance can be used to indicate the movement distance of the contact point of the first signal pin, the second signal pin, or the third signal pin. It can be imagined that during the process of inserting the first connector into the second connector, the signal pin can be turned on later than the power supply pin. During the process of pulling out the second connector from the first connector, the signal pin can be disconnected earlier than the power supply pin. Thus, it is realized that the power supply system determines whether to power on or power off by detecting the signal pin during the plugging and unplugging process of the first connector and the second connector. During the process of inserting the second connector into the first connector, the power supply system is not powered on at the moment when the power supply pin makes contact. During the process of pulling out the second connector from the first connector, the power supply system is also not powered on at the moment when the power supply pin separates. Therefore, it is possible to effectively avoid the hot plugging and unplugging of the first connector and the second connector, and at the same time, it is possible to effectively avoid the arcing and ablation of the respective power supply pins of the first connector and the second connector during the hot plugging and unplugging scenario.

[0044] Optionally, when the types of the first power cord and the second power cord among the multiple power cords recognized by the power supply system are different, the power supply system can be used to: output active power according to the rated power of the first power cord. Alternatively, the power supply system can be used to: output active power according to the rated power of the second power cord and issue an alarm prompt message.

[0045] Among them, the rated power of the first power cord can be less than the rated power of the second power cord. The alarm prompt message is used to indicate to replace the second power cord.

[0046] In a second aspect, the present application provides a network device, which may include a power cord and the power supply system provided in the first aspect and its possible implementation manners. The power supply system can be connected to the power cord, and the power cord can be connected to a power supply.

[0047] It should be understood that the technical solutions of the second aspect of the present application are consistent with those of the first aspect of the present application, and the beneficial effects obtained by each aspect and the corresponding feasible implementation manners are similar, and will not be elaborated here. Description of the Drawings

[0048] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments or the description of the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0049] Figure 1 It is a schematic structural diagram of the power supply system 10 in an embodiment of the present application;

[0050] Figure 2 It is another schematic structural diagram of the power supply system 10 in an embodiment of the present application;

[0051] Figure 3 It is a schematic structural diagram of the power supply system 10 and the power cord L1 connected in an embodiment of the present application;

[0052] Figure 4 It is a schematic structural diagram of the power supply system 10 and the power cord L1 and the power cord L2 connected in an embodiment of the present application;

[0053] Figure 5a It is a schematic structural diagram of the first connector 1 in an embodiment of the present application;

[0054] Figure 5b It is another schematic structural diagram of the first connector 1 in an embodiment of the present application;

[0055] Figure 5cAnother schematic structural diagram of the first connector 1 in the embodiment of the present application;

[0056] Figure 6a A schematic structural diagram of the second connector 2 in the embodiment of the present application;

[0057] Figure 6b Another schematic structural diagram of the second connector 2 in the embodiment of the present application;

[0058] Figure 6c Another schematic structural diagram of the second connector 2 in the embodiment of the present application;

[0059] Figure 6d Another schematic structural diagram of the second connector 2 in the embodiment of the present application;

[0060] Figure 7a A schematic structural diagram of the friction distance c1 of the signal pins of the first connector 1 in the embodiment of the present application;

[0061] Figure 7b A schematic structural diagram of the friction distance c2 of the power pins of the first connector 1 in the embodiment of the present application;

[0062] Figure 8a A schematic diagram of the connection sequence of the signal pins and power pins of the first connector 1 and the second connector 2 respectively in the embodiment of the present application;

[0063] Figure 8b A schematic diagram of the disconnection sequence of the signal pins and power pins of the first connector 1 and the second connector 2 respectively in the embodiment of the present application;

[0064] Figure 9a A schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0065] Figure 9b Another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0066] Figure 10a A schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0067] Figure 10b Another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0068] Figure 11a A schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0069] Figure 11b Another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0070] Figure 12a It is a schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0071] Figure 12b It is another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0072] Figure 13a It is a schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0073] Figure 13b It is another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0074] Figure 14a It is a schematic diagram of the connection relationship between the power supply system 10 and the power line L1 in the embodiment of the present application;

[0075] Figure 14b It is a schematic diagram of the connection relationship between the power supply system 10, the power line L1 and the power line L2 in the embodiment of the present application;

[0076] Figure 15a It is a schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0077] Figure 15b It is another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0078] Figure 16a It is a schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0079] Figure 16b It is another schematic structural diagram of the power supply system 10 in the embodiment of the present application;

[0080] Figure 17a It is a schematic structural diagram of the network device 100 in the embodiment of the present application;

[0081] Figure 17b It is another schematic structural diagram of the network device 100 in the embodiment of the present application. Detailed implementation manners

[0082] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0083] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0084] In the embodiments of the specification, claims and drawings of the present application, terms such as "first", "second", etc. are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0085] It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can represent: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (one) of the following" or its similar expressions refer to any combination of these items, including any combination of single items (ones) or plural items (ones). For example, at least one (one) of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a, b and c", where a, b, c can be single or multiple.

[0086] With the rapid development of communication network technology, network devices have been widely used. A network device may include a power supply system and a terminal device. The power supply system may include a power module. The power module can be connected to a power supply through a power cord, and the power module can also be connected to the terminal device through a cable. The network device has a long lifespan. When upgrading the power module during the lifecycle of the network device, the power cord needs to be upgraded synchronously. To ensure the compatibility of the power cord socket and avoid misplugging the power cord, the power supply system needs to have the function of identifying the type of power cord. Related technologies often set electronic chips and active devices in the power cord. The electronic chip can control the active device to send identification information indicating the type of power cord (such as 3kW power cord, 4kW power cord, 6kW power cord, etc.) to the terminal device, thereby realizing the identification of the power cord type. However, the setting of the electronic chip and the active device not only increases the cost of the power cord, but also, since the network device requires long-term reliable operation and the active device is relatively easy to be damaged, the reliability of the power cord is greatly reduced, and the operation and maintenance cost of the network device is increased.

[0087] To overcome the above deficiencies, the embodiments of the present application provide a power supply system, such as Figure 1 and Figure 2As shown. The power supply system 10 may include a power module (PM). The PM may include a voltage source V CC , a sampling circuit AD, and a first connector 1.

[0088] Among them, the first connector 1 can be used to connect to the power line L1, and the power line L1 can be connected to the power supply PS1, as Figure 1 shown. Figure 1 In, the power supply system 10 may have a single power supply input scenario, and the power supply system 10 is used to identify the type of a single power line (i.e., the power line L1). The single power supply input scenario of the power supply system 10 can also refer to Figure 3 .

[0089] Of course, the first connector 1 can be used to connect to the power line L1 and the power line L2. The power line L1 can be connected to the power supply PS1, and the power line L2 can be connected to the power supply PS2, as Figure 2 shown. Figure 2 In, the power supply system 10 may have a dual power supply input scenario (that is, a multi-power supply input scenario). The power supply system 10 is used to identify the types of two power lines (i.e., the power line L1 and the power line L2). The dual power supply input scenario of the power supply system 10 can refer to Figure 4 .

[0090] Optionally, the voltage source V CC can be used to: provide a first detection voltage V 1 for the first connector 1.

[0091] The sampling circuit can be used to: collect a second detection voltage V 2 from the first connector 1, and identify the type of the power line L1 (or, the power line L1 and the power line L2) according to the second detection voltage V 2 . Among them, the type of the power line L1 or the power line L2 may include type A power line, type B power line, and type C power line. Among them, the type A power line can be a 4kW power line, the type B power line can be a 6kW power line, the type C power line can be a 3kW power line, etc., which are not limited in the embodiments of the present application.

[0092] The power supply system 10 provided by the embodiments of the present application can collect the second detection voltage V CC of the first connector 1 through the first detection voltage V 1 provided by the voltage source V 2 , so as to identify the type of the power line according to the second detection voltage V 2 . It can be seen that compared with the related art that sets electronic chips and active devices in the power line, the power supply system 10 provided by the embodiments of the present application not only realizes the identification of the power line type, but also ensures the reliability of the power line and does not increase the operation and maintenance cost of the network device.

[0093] Further, as Figure 5a shown, the first connector 1 may include a first signal pin a and a second signal pin cp. Alternatively, as Figure 5b shown, the first connector 1 may include a first signal pin a, a third signal pin b, and a second signal pin cp.

[0094] Optionally, the first connector 1 may further include a plurality of first power pins (including a positive power pin S1, a negative power pin S2, and a ground power pin S3), as Figure 5c . The lengths of the positive power pin S1, the negative power pin S2, and the ground power pin S3 may all be equal. The friction distances of the positive power pin S1, the negative power pin S2, and the ground power pin S3 may all be equal. Among them, the friction distance may be used to indicate the movement distance of the contact point of the first power pin.

[0095] In some embodiments, for the single power input scenario of the power supply system 10, referring to Figure 3 , the power line L1 may include a second connector 2, and the second connector 2 may be used to connect to the first connector 1.

[0096] The second connector 2 may be used to: short-circuit the first signal pin a and the second signal pin cp of the first connector 1.

[0097] It can be seen that the power supply system 10 provided by the embodiments of the present application can identify the type of the power line L1 through the first connector 1.

[0098] For the dual power input scenario of the power supply system 10, referring to Figure 4 , the power line L1 may include a second connector 21, and the second connector 21 may be used to connect to the first connector 11. Similarly, the power line L2 may include a second connector 22, and the second connector 22 may be used to connect to the first connector 12.

[0099] The second connector 21 may be used to: short-circuit the first signal pin a and the second signal pin cp of the first connector 11, or short-circuit the third signal pin b and the second signal pin cp of the first connector 11.

[0100] Similarly, the second connector 22 may be used to: short-circuit the first signal pin a and the second signal pin cp of the second connector 12, or short-circuit the third signal pin b and the second signal pin cp of the second connector 12.

[0101] It can be seen that the power supply system 10 provided by the embodiments of the present application can identify the types of the power line L1 and the power line L2 through the first connector 11 and the first connector 12.

[0102] Next, the second connector will be introduced by taking the second connector 2 as an example.

[0103] Optionally, the second connector 2 may include a shorting pin c, as Figure 6a shown. In addition to the shorting pin c, the second connector 2 may further include an open pin d, as Figure 6b shown. Alternatively, the second connector 2 may not be provided with the shorting pin c or the open pin d, as Figure 6c shown.

[0104] Similar to the first connector 1, the second connector 2 may also include a plurality of second power pins (including a positive power pin S4, a negative power pin S5, and a ground power pin S6), as Figures 6a to 6d shown.

[0105] In one example, for the second connector 2 as Figure 6a shown, the lengths of the shorting pin c and the plurality of second power pins may be equal, and the rubbing distances of the shorting pin c and the plurality of power pins may be equal.

[0106] In another example, for the second connector 2 as Figure 6b shown, the lengths of the shorting pin c, the open pin d, and the plurality of second power pins may be equal, and the rubbing distances of the shorting pin c, the open pin d, and the plurality of second power pins may be equal.

[0107] In yet another example, for the second connector 2 as Figure 6c shown, the lengths of the plurality of power pins may be equal, and the rubbing distances of the plurality of power pins may be equal.

[0108] Optionally, as Figure 7a shown, Lpin1 represents the length of the signal pins of the first connector 1 (including the first signal pin a, the second signal pin cp, or the third signal pin b), Lpin2 represents the length of the shorting pin c of the second connector 2, and c1 represents the rubbing distance of the signal pins of the first connector 1.

[0109] As Figure 7b shown, Lpin3 represents the length of the first power pins (including the positive power pin S1, the negative power pin S2, or the ground power pin S3), Lpin4 represents the length of the second power pins (including the positive power pin S4, the negative power pin S5, or the ground power pin S6). c2 represents the rubbing distance of the first power pins.

[0110] Comparing Figure 7a and Figure 7b it can be seen that c1 < c2. That is to say, the rubbing distance c1 of the signal pins of the first connector 1 may be less than the rubbing distance c2 of the first power pins.

[0111] Thus, during the process of inserting the first connector 1 into the second connector 2, the connection sequence of the signal pins and power pins of the first connector 1 and the second connector 2 is as follows Figure 8a shown. Figure 8a where t represents time, t1 represents the connection time of the first power pin and the second power pin, and t2 represents the connection time of the signal pins of the first connector 1 and the second connector 2 respectively. It can be seen from Figure 8a that the signal pins of the first connector 1 and the second connector 2 can be connected later than their respective power pins. Thus, it is realized that the power supply system 10 determines whether to power on by detecting the signal pins during the process of inserting the first connector 1 into the second connector 2.

[0112] During the process of pulling out the second connector 2 from the first connector 1, the disconnection sequence of the signal pins and power pins of the first connector 1 and the second connector 2 is as follows Figure 8b shown. Figure 8b where t represents time, t3 represents the disconnection time of the signal pins of the first connector 1 and the second connector 2 respectively, and t4 represents the disconnection time of the first power pin and the second power pin. It can be seen from Figure 8b that the signal pins of the first connector 1 and the second connector 2 can be disconnected before their respective power pins. Thus, it is realized that the power supply system 10 determines whether to power off by detecting the signal pins during the process of pulling out the second connector 2 from the first connector 1.

[0113] It can be conceived that during the plugging and unplugging process of the first connector 1 and the second connector 2, the power supply system 10 is not powered on at the moment of contact and separation of the first power pin and the second power pin, which can effectively avoid the hot plugging of the first connector 1 and the second connector 2, and can also effectively avoid the arcing and ablation of the first power pin and the second power pin at the moment of contact in the hot plugging scenario.

[0114] In some embodiments, for the single power input scenario, the PM may further include a first voltage dividing resistor R1, as Figure 9a shown.

[0115] Optionally, the first end of the first voltage-dividing resistor R1 is connected to the voltage source Vcc. The second end of the first voltage-dividing resistor R1 can be connected to the first sampling circuit AD1. The second end of the first voltage-dividing resistor R1 can also be connected to the second connector 21 through the first signal pin a of the first connector 11. The second signal pin cp of the first connector 11 can be connected to the second connector 21 and can be connected to the ground terminal. For the Class A power line, the shorting pin c of the second connector 21 can short-circuit the first signal pin a and the second signal pin cp of the first connector 11. It can be seen that the power supply system 10 provided by the embodiment of the present application can identify the types of two types of power lines, such as the Class A power line (4kW power line) and the Class C power line (3kW power line), through the voltage source Vcc, the first voltage-dividing resistor R1, and the first sampling circuit AD1.

[0116] In some other embodiments, for the dual-power-input scenario, the PM may include multiple first connectors (the first connector 11 and the second connector 12) and multiple sampling circuits (the first sampling circuit AD1 and the second sampling circuit AD2). The multiple power lines include multiple second connectors (the second connector 21 and the second connector 22). The PM may further include a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2, as Figure 9b shown.

[0117] Among them, the first ends of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 can be connected to the voltage source Vcc respectively. The second end of the first voltage-dividing resistor R1 can be connected to the first sampling circuit AD1, and the second end of the first voltage-dividing resistor R1 can also be connected to the second connector 21 through the first signal pin a of the first connector 11. The second end of the second voltage-dividing resistor R2 can be connected to the second sampling circuit AD2, and the second end of the second voltage-dividing resistor R2 can also be connected to the second connector 22 through the first signal pin a of the first connector 12. The second signal pin cp of the first connector 11 can be connected to the second connector 21, and the second signal pin cp of the first connector 12 can be connected to the second connector 22. The second signal pins cp of the first connector 11 and the first connector 12 can both be connected to the ground terminal. For the Class A power line, the shorting pin c of the second connector 21 can short-circuit the first signal pin a and the second signal pin cp of the first connector 11. The shorting pin c of the second connector 22 can also short-circuit the first signal pin a and the second signal pin cp of the first connector 12. It can be seen that the power supply system 10 provided by the embodiment of the present application can identify the types of two types of power lines, such as the Class A power line (4kW power line) and the Class C power line (3kW power line), through the voltage source Vcc, the first voltage-dividing resistor R1, the second voltage-dividing resistor R2, the first sampling circuit AD1, and the second sampling circuit AD2.

[0118] Furthermore, in Figure 9aOn this basis, the PM may further include a third voltage-dividing resistor R3, as Figure 10a shown. The first end of the third voltage-dividing resistor R3 may be connected to the first sampling circuit AD1. The first end of the third voltage-dividing resistor R3 may be connected to the second connector 21 through the first signal pin a of the first connector 11. The second end of the third voltage-dividing resistor R3 may be connected to the second connector 21 through the third signal pin b of the first connector 11. That is to say, the third voltage-dividing resistor R3 may be connected between the node F and the third signal pin b of the first connector 11, refer to Figure 10a .

[0119] Alternatively, the first end of the third voltage-dividing resistor R3 may be connected to the second connector 21 through the third signal pin b of the first connector 11. The second end of the third voltage-dividing resistor R3 may be connected to the second connector 21 through the first signal pin a of the first connector 11. That is to say, the third voltage-dividing resistor R3 may also be connected between the node F and the first signal pin a of the first connector 11.

[0120] It can be seen that the power supply system 10 provided by the embodiment of the present application can identify the types of three types of power lines, such as the type A power line (4kW power line), the type B power line (6kW power line), and the type C power line (3kW power line), through the voltage source Vcc, the first voltage-dividing resistor R1, the third voltage-dividing resistor R3, and the first sampling circuit AD1.

[0121] On Figure 9b this basis, the PM may further include a third voltage-dividing resistor R3 and a fourth voltage-dividing resistor R4, as Figure 10b shown. The first end of the third voltage-dividing resistor R3 may be connected to the first sampling circuit AD1. The first end of the third voltage-dividing resistor R3 may also be connected to the second connector 21 through the first signal pin a of the first connector 11. The second end of the third voltage-dividing resistor R3 may be connected to the second connector 21 through the third signal pin b of the first connector 11. That is to say, the third voltage-dividing resistor R3 may be connected between the node F and the third signal pin b of the first connector 11, refer to Figure 10b . Alternatively, the first end of the third voltage-dividing resistor R3 may also be connected to the second connector 21 through the third signal pin b of the first connector 11. The second end of the third voltage-dividing resistor R3 may be connected to the second connector 21 through the first signal pin a of the first connector 11. That is to say, the third voltage-dividing resistor R3 may also be connected between the node F and the first signal pin a of the first connector 11.

[0122] Among them, the first end of the fourth voltage-dividing resistor R4 can be connected to the second sampling circuit AD2. The first end of the fourth voltage-dividing resistor R4 can also be connected to the second connector 22 through the first signal pin a of the first connector 12. The second end of the fourth voltage-dividing resistor R4 can be connected to the second connector 22 through the third signal pin b of the first connector 12. That is to say, the third voltage-dividing resistor R4 can be connected between the node E and the third signal pin b of the first connector 12, refer to Figure 10b . Or, the first end of the fourth voltage-dividing resistor R4 can also be connected to the second connector 22 through the third signal pin b of the first connector 12. The second end of the fourth voltage-dividing resistor R4 can be connected to the second connector 22 through the first signal pin a of the first connector 12. That is to say, the fourth voltage-dividing resistor R4 can also be connected between the node E and the first signal pin a of the first connector 12.

[0123] It can be seen that the power supply system provided by the embodiment of the present application can identify the types of three types of power supply lines, such as the A-type power supply line (4kW power supply line), the B-type power supply line (6kW power supply line), and the C-type power supply line (3kW power supply line), through the voltage source Vcc, the first voltage-dividing resistor R1, the second voltage-dividing resistor R2, the third voltage-dividing resistor R3, the fourth voltage-dividing resistor R4, the first sampling circuit AD1, and the second sampling circuit AD2.

[0124] Furthermore, on the basis of Figure 10a , the power supply system 10 can further include an input module (power entry module, PEM), as shown in Figure 11a and Figure 11b .

[0125] Optionally, as shown in Figure 11a , the PEM includes a third connector 31 and a fourth connector 41. The third connector 31 can be used to connect to the first connector 11, and the fourth connector 41 can be used to connect to the second connector 21.

[0126] As shown in Figure 11b , the PEM includes a third connector 31, a third connector 32, a fourth connector 41, and a fourth connector 42. The third connector 31 can be used to connect to the first connector 11, and the fourth connector 41 can be used to connect to the second connector 21. Similarly, the third connector 32 can be used to connect to the first connector 12, and the fourth connector 42 can be used to connect to the second connector 22.

[0127] The power supply system 10 provided by the embodiment of the present application Figure 11a and Figure 11b can identify the types of three types of power supply lines, such as the A-type power supply line (4kW power supply line), the B-type power supply line (6kW power supply line), and the C-type power supply line (3kW power supply line), through the PM and the PEM.

[0128] In a possible implementation, for a single power supply input scenario, the PM may include multiple sampling circuits (a first sampling circuit AD1 and a second sampling circuit AD2). The PM may also include a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2, as Figure 12a shown. The first end of the first voltage-dividing resistor R1 may be connected to the voltage source Vcc1. The second end of the first voltage-dividing resistor R1 is connected to the first sampling circuit AD1, and the second end of the first voltage-dividing resistor R1 is also connected to the second connector 21 through the first signal pin a of the first connector 11. The first end of the second voltage-dividing resistor R2 may be connected to the voltage source Vcc2. The second end of the second voltage-dividing resistor R2 is connected to the second sampling circuit AD2, and the second end of the second voltage-dividing resistor R2 is also connected to the second connector 21 through the third signal pin b of the first connector 11. The second signal pin cp of the first connector 11 is connected to the second connector 21 and is connected to the ground terminal. For type A power lines, the shorting pin c of the second connector 21 may short the first signal pin a and the second signal pin cp of the first connector 11. For type B power lines, the shorting pin c of the second connector 21 may short the third signal pin b and the second signal pin cp of the first connector 11. It can be seen that the power supply system 10 provided by the embodiments of the present application can identify the types of three types of power lines, such as type A power lines (4kW power lines), type B power lines (6kW power lines), and type C power lines (3kW power lines), through the voltage source Vcc1, the voltage source Vcc2, the first sampling circuit AD1, the second sampling circuit AD2, the first voltage-dividing resistor R1, and the second voltage-dividing resistor R2.

[0129] In another possible implementation, for a dual power supply input scenario, the PM may include multiple first connectors (a first connector 11 and a first connector 12) and multiple sampling circuits (a first sampling circuit AD1, a second sampling circuit AD2, a third sampling circuit AD3, and a fourth sampling circuit AD4). The multiple power lines include multiple second connectors (a second connector 21 and a second connector 22). The PM also includes a first voltage-dividing resistor R1, a second voltage-dividing resistor R2, a fifth voltage-dividing resistor R5, and a sixth voltage-dividing resistor R6, as Figure 12b shown.

[0130] Among them, the first ends of the first voltage-dividing resistor R1 and the fifth voltage-dividing resistor R5 can be connected to the voltage source Vcc1, and the first ends of the second voltage-dividing resistor R2 and the sixth voltage-dividing resistor F6 can be connected to the voltage source Vcc2. The second end of the first voltage-dividing resistor R1 is connected to the first sampling circuit AD1, and the second end of the first voltage-dividing resistor R1 is also connected to the second connector 21 through the first signal pin a of the first connector 11. The second end of the second voltage-dividing resistor R2 is connected to the second sampling circuit AD2, and the second end of the second voltage-dividing resistor R2 is also connected to the second connector 21 through the third signal pin b of the first connector 11. The second signal pin cp of the first connector 11 is connected to the second connector 21 and is connected to the ground terminal.

[0131] The second end of the fifth voltage-dividing resistor R5 is connected to the third sampling circuit AD3, and the second end of the fifth voltage-dividing resistor R5 is also connected to the second connector 22 through the first signal pin a of the first connector 12. The second end of the sixth voltage-dividing resistor R6 can be connected to the fourth sampling circuit AD4, and the second end of the sixth voltage-dividing resistor R6 is also connected to the second connector 22 through the third signal pin b of the first connector 12. The second signal pin cp of the first connector 12 is connected to the second connector 22 and is connected to the ground terminal. For the A-type power cord, the shorting pin c of the second connector 21 can short-circuit the first signal pin a and the second signal pin cp of the first connector 11. The shorting pin c of the second connector 22 can short-circuit the first signal pin a and the second signal pin cp of the first connector 12. For the B-type power cord, the shorting pin c of the second connector 21 can short-circuit the third signal pin b and the second signal pin cp of the first connector 11. The shorting pin c of the second connector 22 can short-circuit the third signal pin b and the second signal pin cp of the first connector 12.

[0132] It can be seen that the power supply system 10 provided by the embodiment of the present application can identify the types of three types of power cords, such as the A-type power cord (4kW power cord), the B-type power cord (6kW power cord), and the C-type power cord (3kW power cord), through the voltage source Vcc1, the voltage source Vcc2, the first voltage-dividing resistor R1, the second voltage-dividing resistor R2, the third voltage-dividing resistor R3, the fourth voltage-dividing resistor R4, the first sampling circuit AD1, the second sampling circuit AD2, the third sampling circuit AD3, and the fourth sampling circuit AD4.

[0133] Furthermore, on the Figure 12a basis, the power supply system 10 may further include an input module (power entry module, PEM), as Figure 13a and Figure 13b shown.

[0134] Optionally, as Figure 13aAs shown, the PEM includes a third connector 31 and a fourth connector 41. The third connector 31 can be used to connect with the first connector 11, and the fourth connector 41 can be used to connect with the second connector 21.

[0135] like Figure 13b As shown, the PEM includes a third connector 31, a third connector 32, a fourth connector 41 and a fourth connector 42. The third connector 31 can be used to connect with the first connector 11, and the fourth connector 41 can be used to connect with the second connector 21. Similarly, the third connector 32 can be used to connect with the first connector 12, and the fourth connector 42 can be used to connect with the second connector 22.

[0136] Embodiments of the present application Figure 13a and Figure 13b The provided power supply system 10 can identify three types of power lines, namely, Class A power lines (4kW power lines), Class B power lines (6kW power lines), and Class C power lines (3kW power lines) through PM and PEM.

[0137] Figure 11a and Figure 13a The connection relationship between the power supply system 10 and the power supply line L1 shown in FIG. Figure 14a Hint. Figure 14a In the embodiment, the PM is connected to the third connector 31 of the PEM through the first connector 11, and the fourth connector 41 of the PEM can be connected to the second connector 21 of the power line L1. The power line L1 can be connected to the power supply PS1.

[0138] Figure 11b and Figure 13b The connection relationship between the power supply system 10 and the power supply line L1 and the power supply line L2 can also be used Figure 14b Hint. Figure 14b In the embodiment, the PM is connected to the third connector 31 of the PEM through the first connector 11, and the fourth connector 41 of the PEM can be connected to the second connector 21 of the power line L1. The power line L1 can be connected to the power supply PS1. At the same time, the PM is connected to the third connector 32 of the PEM through the first connector 12 (due to the shielding, Figure 14b The fourth connector 42 of the PEM can be connected to the second connector 22 of the power line L2. The power line L2 can be connected to the power supply PS2.

[0139] In an example, for a single power input scenario, the PEM may include a third connector 31 and a fourth connector 41. The PM may also include a first voltage divider resistor R1, such as Figure 15a shown.

[0140] Optionally, the first end of the first voltage-dividing resistor R1 can be connected to the voltage source Vcc. The second end of the first voltage-dividing resistor R1 can be connected to the first sampling circuit AD1. The second end of the first voltage-dividing resistor R1 can also be connected to the first signal pin a of the first connector 11. The first signal pin a of the first connector 11 can be connected to the second connector 21 through the first signal pin a of the third connector 31 and the first signal pin a of the fourth connector 41. The second signal pins cp of the first connector 11, the third connector 31, the fourth connector 41, and the second connector 21 can all be connected to the ground terminal. The second signal pin cp of the first connector 11 can be connected to the second connector 21 through the second signal pin cp of the third connector 31 and the second signal pin cp of the fourth connector 41, and the second signal pin cp of the first connector 11 can be connected to the ground terminal. For the type A power cord, the shorting pin c of the second connector 21 can short-circuit the first signal pin a and the second signal pin cp of the first connector 11. It can be seen that the power supply system 10 provided by the embodiment of the present application can identify the types of two types of power cords, such as the type A power cord (4kW power cord) and the type C power cord (3kW power cord), through the voltage source Vcc, the first voltage-dividing resistor R1, the third connector 31, the fourth connector 41, and the sampling circuit.

[0141] In another example, for the dual-power-input scenario, the PEM can include the third connector 31 and multiple fourth connectors (i.e., the fourth connector 41 and the fourth connector 42), the PM can include multiple sampling circuits (i.e., the first sampling circuit AD1 and the second sampling circuit AD2), and multiple power cords can include multiple second connectors (i.e., the second connector 21 and the second connector 22). The PM can also include the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2, as Figure 15b shown.

[0142] Among them, the first ends of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 can be connected to the voltage source Vcc respectively. The second end of the first voltage-dividing resistor R1 can be connected to the first sampling circuit AD1, and the second end of the first voltage-dividing resistor R1 can also be connected to the first signal pin a of the first connector 11. The second end of the second voltage-dividing resistor R2 can be connected to the second sampling circuit AD2, and the second end of the second voltage-dividing resistor R2 is also connected to the third signal pin b of the first connector 11. The first signal pin a of the first connector 11 can be connected to the second connector 21 through the first signal pin a of the third connector 31 and the first signal pin a of the fourth connector 41. The third signal pin b of the first connector 11 can be connected to the second connector 22 through the third signal pin b of the third connector 31 and the first signal pin a of the fourth connector 42. The second signal pin cp of the first connector 11 is connected to the second signal pin cp of the third connector 31 and is connected to the ground terminal. The second signal pin cp of the third connector 31 is connected to the second connector 21 through the second signal pin cp of the fourth connector 42, and the second signal pin cp of the third connector 31 is also connected to the second connector 22 through the second signal pin cp of the fourth connector 42. For the A-type power cord, the shorting pin c of the second connector 21 can short-circuit the first signal pin a and the second signal pin cp of the first connector 11. The shorting pin c of the second connector 22 can short-circuit the first signal pin a and the second signal pin cp of the first connector 12. It can be seen that the power supply system provided by the embodiment of the present application can identify the types of two types of power cords, such as the A-type power cord (4kW power cord) and the C-type power cord (3kW power cord), through the voltage source Vcc, the first voltage-dividing resistor R1, the second voltage-dividing resistor R2, the third connector 31, the fourth connector 41, the fourth connector 42, the first sampling circuit AD1, and the second sampling circuit AD2.

[0143] In some embodiments, for the single power supply input scenario, the PEM may include a third connector 31 and a fourth connector 41. The PM may also include a first voltage-dividing resistor R1. The PEM may also include a third voltage-dividing resistor R3, as Figure 16a shown.

[0144] Optionally, the first voltage-dividing resistor R1 can be connected to the voltage source Vcc. The second end of the first voltage-dividing resistor R1 can be connected to the first sampling circuit AD1, and the second end of the first voltage-dividing resistor R1 can also be connected to the first signal pin a of the third connector 31 through the first signal pin a of the first connector 11. The second signal pin cp of the first connector 11 can be connected to the second signal pin cp of the third connector 31 and can be connected to the ground terminal. The third voltage-dividing resistor R3 can be connected between the first signal pin a of the third connector 31 and the third signal pin b of the fourth connector 41, as Figure 16aAs shown. The second signal pin cp of the third connector 31 can be connected to the second signal pin cp of the fourth connector 41. The first signal pin a, the second signal pin cp, and the third signal pin b of the fourth connector 41 can be respectively connected to the second connector 21. For the type A power cord, the shorting pin c of the second connector 21 can short the first signal pin a and the second signal pin cp of the first connector 11. For the type B power cord, the shorting pin c of the second connector 21 can short the third signal pin b and the second signal pin cp of the first connector 11.

[0145] Of course, the third voltage-dividing resistor R3 can also be connected between the first signal pin a of the third connector 31 and the first signal pin a of the fourth connector 41, and the embodiments of the present application do not make limitations.

[0146] It can be seen that the power supply system 10 provided by the embodiments of the present application can identify the types of three types of power cords, such as type A power cord (4kW power cord), type B power cord (6kW power cord), and type C power cord (3kW power cord), through the voltage source Vcc, the first voltage-dividing resistor R1, the third connector 31, the fourth connector 41, and the first sampling circuit AD1.

[0147] In some other embodiments, for the dual power input scenario, the PEM can include a third connector 31 and multiple fourth connectors (i.e., the fourth connector 41 and the fourth connector 42), the PM can include multiple sampling circuits (i.e., the first sampling circuit AD1 and the second sampling circuit AD2), and multiple power cords can include multiple second connectors (i.e., the second connector 21 and the second connector 22). The second connector 21 and the second connector 22 correspond to the fourth connector 41 and the fourth connector 42 one by one. The PM can also include a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2. The PEM can also include a third voltage-dividing resistor R3 and a fourth voltage-dividing resistor R4, as Figure 16b shown.

[0148] Among them, the first ends of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 can be connected to the voltage source Vcc. The second end of the first voltage-dividing resistor R1 can be connected to the first sampling circuit AD1. The second end of the first voltage-dividing resistor R1 can also be connected to the first signal pin a of the third connector 31 through the first signal pin a of the first connector 11. The second end of the second voltage-dividing resistor R2 can be connected to the second sampling circuit AD2, and the second end of the second voltage-dividing resistor R2 can also be connected to the third signal pin b of the third connector 31 through the third signal pin b of the first connector 11. The second signal pin cp of the first connector 11 can be connected to the second signal pin cp of the third connector 31 and can be connected to the ground terminal. The third voltage-dividing resistor R3 can be connected between the first signal pin a of the third connector 31 and the third signal pin b of the fourth connector 41, as Figure 16bAs shown. The fourth voltage-dividing resistor R4 can be connected between the third signal pin b of the third connector 31 and the third signal pin b of the fourth connector 42. The second signal pin cp of the third connector 31 can be connected to the second signal pin cp of each of the fourth connector 41 and the fourth connector 42. The first signal pin a, the second signal pin cp, and the third signal pin b of the fourth connector 41 can be connected to the second connector 21, and the first signal pin a, the second signal pin cp, and the third signal pin b of the fourth connector 42 can be connected to the second connector 22. For the A-type power cord, the shorting pin c of the second connector 21 can short-circuit the first signal pin a and the second signal pin cp of the first connector 11. The shorting pin c of the second connector 22 can short-circuit the first signal pin a and the second signal pin cp of the first connector 12. For the B-type power cord, the shorting pin c of the second connector 21 can short-circuit the third signal pin b and the second signal pin cp of the first connector 11. The shorting pin c of the second connector 22 can short-circuit the third signal pin b and the second signal pin cp of the first connector 12.

[0149] Of course, the third voltage-dividing resistor R3 can also be connected between the first signal pin a of the third connector 31 and the first signal pin a of the fourth connector 41. Similarly, the fourth voltage-dividing resistor R4 can be connected between the third signal pin b of the third connector 31 and the first signal pin a of the fourth connector 42, which is not limited in the embodiments of the present application.

[0150] It can be seen that the power supply system 10 provided by the embodiments of the present application can identify the types of three types of power cords, such as A-type power cords (4kW power cords), B-type power cords (6kW power cords), and C-type power cords (3kW power cords), through the voltage source Vcc, the first voltage-dividing resistor R1, the third connector 31, the fourth connector 41, the fourth connector 42, the first sampling circuit AD1, and the second sampling circuit AD2.

[0151] Furthermore, for Figure 16a , the PM can identify the type of the power cord and output the active power (which can be represented by P) in a single power supply input scenario, thereby avoiding power cord overload. For the PM with a rated power of 4kW and the PM with a rated power of 6kW, when the power supply system 10 is connected to different types of power cords, the second detection voltage from the first connector 11 collected by the first sampling circuit AD1 and the output active power P are shown in Table 1:

[0152] Table 1

[0153]

[0154] For Figure 16b, the PM can identify the types of two power supply lines in a dual - power - input scenario and output the active power, thus avoiding power line overload. For a PM with a rated power of 4 kW and a PM with a rated power of 6 kW, when connecting different types of power supply lines, the second detection voltage from the first connector 11 collected by the first sampling circuit AD1 and the output active power P are shown in Table 2:

[0155] Table 2

[0156]

[0157]

[0158] In Table 2, in the dual - power - input scenario of the power supply system 10, the types of the two power supply lines are the same, and the power supply system 10 can operate in the normal mode.

[0159] The power supply system 10 can also have an abnormal mode of connecting two different types of power supply lines, as shown in Table 3. It is divided into the following two cases:

[0160] Case 1: The two fourth connectors of the power supply system 10 are respectively connected to the power supply lines

[0161] The power supply system 10 can output the active power according to the rated power of the power supply line with a low power level (such as 3 kW) (i.e., the first power supply line). Or, the power supply system 10 can output the active power according to the rated power of the power supply line with a high power level (such as 4 kW) (i.e., the second power supply line) and send an alarm message. Among them, the alarm message can be used to indicate replacing the power supply line with a high power level. It can be imagined that the rated power of the power supply line with a low power level is less than the rated power of the power supply line with a high power level.

[0162] Table 3

[0163]

[0164]

[0165] Case 2: One of the fourth connectors of the power supply system 10 is connected to a power supply line and the other fourth connector is not connected to a power supply line

[0166] The connected power supply line can be identified. The fourth connector without the connected power supply line can judge whether the power supply is single - input in the system 10 by identifying whether the power pins of the power supply line are in place. If so, a prompt message is sent. The prompt message is used to indicate that another power supply line needs to be inserted.

[0167] As can be seen from the above embodiments, the present application can identify the types of power lines with different current-carrying capacities through PM or through PM and PEM, and can also determine the active power output by the power supply system 10 according to the category of the power line. In the embodiments of the present application, the third voltage-dividing resistor R3 can be set in a single power supply input scenario, the third voltage-dividing resistor R3 and the fourth voltage-dividing resistor R5 can be set in a dual power supply input scenario, or different voltage sources can be set, so that different second detection voltages can be collected by the sampling circuit, thereby realizing the identification of the power line type. Of course, only several possible implementation manners are introduced above, and there may be other implementation manners in the embodiments of the present application, which will not be described in detail.

[0168] It can be understood that the embodiments of the present application can identify the types of power lines including the second connector (including two or three signal pins) through a power supply system including the first connector (including two or three signal pins). It can be conceived that the embodiments of the present application can also identify different types of power lines including more signal pins (such as short-circuit pins or shorting pins, etc.) through the first connector including four, five or more signal pins. That is to say, the embodiments of the present application can not only be compatible with different types of power lines, but also support the differentiation of multiple power lines.

[0169] The embodiments of the present application also provide a network device, such as Figure 17a and Figure 17b shown.

[0170] Among them, Figure 17a in, the network device 100 may include a power line L1 and a power supply system 10. The power supply system 10 can be connected to the power line L1, and the power line L1 can be connected to the power supply PS1.

[0171] Figure 17b in, the network device 100 may include a power line L1, a power line L2 and a power supply system 10. The power supply system 10 can be connected to the power line L1, and the power supply system 10 can also be connected to the power line L2. The power line L1 can be connected to the power supply PS1, and the power line L2 can be connected to the power supply PS2.

[0172] As mentioned above, the above are only the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power supply system, characterized in that, it includes a power supply module; the power supply module includes a voltage source, a sampling circuit and a first connector; wherein, the first connector is used for connecting with a power line; the voltage source is used for: providing a first detection voltage for the first connector; the sampling circuit is used for: collecting a second detection voltage from the first connector and identifying the type of the power line according to the second detection voltage.

2. The power supply system according to claim 1, characterized in that, the first connector includes a first signal pin and a second signal pin; or, the first connector includes a first signal pin, a second signal pin and a third signal pin; the power line includes a second connector, and the second connector is used for connecting with the first connector; the second connector is used for: short - circuiting the first signal pin and the second signal pin, or short - circuiting the second signal pin and the third signal pin.

3. The power supply system according to claim 2, characterized in that, when the power supply system is used to identify the type of a single power line, the power supply module further includes a first voltage - dividing resistor; the first end of the first voltage - dividing resistor is connected to the voltage source, the second end of the first voltage - dividing resistor is connected to the sampling circuit, and the second end of the first voltage - dividing resistor is connected to the second connector through the first signal pin of the first connector, and the second signal pin of the first connector is connected to the second connector and to the ground terminal; when the power supply system is used to identify the types of multiple power lines, the power supply module includes multiple first connectors and multiple sampling circuits, multiple power lines include multiple second connectors, and the power supply module further includes a first voltage - dividing resistor and a second voltage - dividing resistor; wherein, the first ends of the first voltage - dividing resistor and the second voltage - dividing resistor are each connected to the voltage source; the second end of the first voltage - dividing resistor is connected to a first sampling circuit among the multiple sampling circuits, and the second end of the first voltage - dividing resistor is also connected to one second connector through the first signal pin of one of the first connectors; the second end of the second voltage - dividing resistor is connected to a second sampling circuit among the multiple sampling circuits, and the second end of the second voltage - dividing resistor is also connected to another second connector through the first signal pin of another first connector; the second signal pin of the one first connector is connected to the one second connector, the second signal pin of the another first connector is connected to the another second connector, and the second signal pin of each first connector is connected to the ground terminal.

4. The power supply system according to claim 3, characterized in that, When the power supply system is used to identify the type of a single power cord, the power supply module further includes a third voltage-dividing resistor; the first end of the third voltage-dividing resistor is connected to the sampling circuit, the first end of the third voltage-dividing resistor is connected to the second connector through the first signal pin of the first connector, and the second end of the third voltage-dividing resistor is connected to the second connector through the third signal pin of the first connector; or, the first end of the third voltage-dividing resistor is connected to the second connector through the third signal pin of the first connector, and the second end of the third voltage-dividing resistor is connected to the second connector through the first signal pin of the first connector; When the power supply system is used to identify the types of multiple power cords, the power supply module further includes a third voltage-dividing resistor and a fourth voltage-dividing resistor; wherein, the first end of the third voltage-dividing resistor is connected to the first sampling circuit, the first end of the third voltage-dividing resistor is further connected to one of the second connectors through the first signal pin of one of the first connectors, and the second end of the third voltage-dividing resistor is connected to one of the second connectors through the third signal pin of one of the first connectors; or, the first end of the third voltage-dividing resistor is further connected to one of the second connectors through the third signal pin of one of the first connectors, and the second end of the third voltage-dividing resistor is connected to one of the second connectors through the first signal pin of one of the first connectors; the first end of the fourth voltage-dividing resistor is connected to the second sampling circuit, the first end of the fourth voltage-dividing resistor is further connected to another second connector through the first signal pin of another first connector, and the second end of the fourth voltage-dividing resistor is connected to another second connector through the third signal pin of another first connector; or, the first end of the fourth voltage-dividing resistor is further connected to another second connector through the third signal pin of another first connector, and the second end of the fourth voltage-dividing resistor is connected to another second connector through the first signal pin of another first connector.

5. The power supply system according to claim 2, characterized in that, When the power supply system is used to identify the type of a single power cord, the power supply module includes a plurality of sampling circuits, and the power supply module further includes a first voltage-dividing resistor and a second voltage-dividing resistor; wherein, the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor are connected to the voltage source; the second end of the first voltage-dividing resistor is connected to the first sampling circuit of the plurality of sampling circuits, and the second end of the first voltage-dividing resistor is further connected to the second connector through the first signal pin of the first connector; the second end of the second voltage-dividing resistor is connected to the second sampling circuit of the plurality of sampling circuits, and the second end of the second voltage-dividing resistor is further connected to the second connector through the third signal pin of the first connector; the second signal pin of the first connector is connected to the second connector and connected to the ground terminal; When the power supply system is used to identify the types of multiple power lines, the power supply module includes multiple first connectors and multiple sampling circuits. The multiple power lines include multiple second connectors. The power supply module further includes a first voltage-dividing resistor, a second voltage-dividing resistor, a fifth voltage-dividing resistor, and a sixth voltage-dividing resistor. Among them, the first ends of the first voltage-dividing resistor, the second voltage-dividing resistor, the fifth voltage-dividing resistor, and the sixth voltage-dividing resistor are each connected to the voltage source. The second end of the first voltage-dividing resistor is connected to a first sampling circuit among the multiple sampling circuits, and the second end of the first voltage-dividing resistor is also connected to one of the second connectors through the first signal pin of one of the first connectors. The second end of the second voltage-dividing resistor is connected to a second sampling circuit among the multiple sampling circuits, and the second end of the second voltage-dividing resistor is also connected to the one of the second connectors through the third signal pin of the one of the first connectors. The second signal pin of the one of the first connectors is connected to the one of the second connectors and is connected to the ground terminal. The second end of the fifth voltage-dividing resistor is connected to a third sampling circuit among the multiple sampling circuits, and the second end of the fifth voltage-dividing resistor is also connected to another second connector through the first signal pin of another first connector. The second end of the sixth voltage-dividing resistor is connected to a fourth sampling circuit among the multiple sampling circuits, and the second end of the sixth voltage-dividing resistor is also connected to the another second connector through the third signal pin of the another first connector. The second signal pin of the another first connector is connected to the another second connector and is connected to the ground terminal.

6. The power supply system according to claim 4 or 5, wherein, the power supply system further includes an input module; the input module includes a third connector and a fourth connector; the third connector is used to connect to the first connector, and the fourth connector is used to connect to the second connector.

7. The power supply system according to claim 2, wherein, the power supply system further includes an input module; When the power supply system is used to identify the type of a single power line, the input module includes a third connector and a fourth connector, and the power supply module further includes a first voltage-dividing resistor. The first end of the first voltage-dividing resistor is connected to the voltage source, the second end of the first voltage-dividing resistor is connected to the sampling circuit, and the second end of the first voltage-dividing resistor is also connected to the first signal pin of the first connector. The first signal pin of the first connector is connected to the second connector through the first signal pin of the third connector and the first signal pin of the fourth connector. The second signal pin of the first connector is connected to the second connector through the second signal pin of the third connector and the second signal pin of the fourth connector, and the second signal pin of the first connector is connected to the ground terminal; When the power supply system is used to identify the types of multiple power lines, the input module includes a third connector and multiple fourth connectors, the power supply module includes multiple sampling circuits, multiple power lines include multiple second connectors, and the power supply module further includes a first voltage-dividing resistor and a second voltage-dividing resistor; the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor are each connected to the voltage source; the second end of the first voltage-dividing resistor is connected to a first sampling circuit among the multiple sampling circuits, and the second end of the first voltage-dividing resistor is also connected to the first signal pin of the first connector. The second end of the second voltage-dividing resistor is connected to a second sampling circuit among the multiple sampling circuits, and the second end of the second voltage-dividing resistor is also connected to the third signal pin of the first connector; the first signal pin of the first connector is connected to one of the second connectors through the first signal pin of the third connector and the first signal pin of one of the fourth connectors; the third signal pin of the first connector is connected to the other second connector through the third pin of the third connector and the first signal pin of the other fourth connector; the second signal pin of the first connector is connected to the second signal pin of the third connector and is connected to the ground terminal; the second signal pin of the third connector is connected to one of the second connectors through the second signal pin of one of the fourth connectors, and the second signal pin of the third connector is also connected to the other second connector through the second signal pin of the other fourth connector.

8. The power supply system according to claim 2, wherein, the power supply system further includes an input module; When the power supply system is used to identify the type of a single power line, the input module includes a third connector and a fourth connector, the power supply module further includes a first voltage-dividing resistor, and the input module further includes a third voltage-dividing resistor; the first voltage-dividing resistor is connected to the voltage source, the second end of the first voltage-dividing resistor is connected to the sampling circuit, and the second end of the first voltage-dividing resistor is connected to the first signal pin of the third connector through the first signal pin of the first connector. The second signal pin of the first connector is connected to the second signal pin of the third connector and is connected to the ground terminal; the third voltage-dividing resistor is connected between the first signal pin of the third connector and the third signal pin of the fourth connector, or the third voltage-dividing resistor is connected between the first signal pin of the third connector and the first signal pin of the fourth connector; the second signal pin of the third connector is connected to the second signal pin of the fourth connector; the first signal pin, the second signal pin, and the third signal pin of the fourth connector are respectively connected to the second connector; When the power supply system is used to identify the types of multiple power lines, the input module includes a third connector and multiple fourth connectors, the power supply module includes multiple sampling circuits, the multiple power lines include multiple second connectors, the multiple second connectors correspond to the multiple fourth connectors one by one, the power supply module further includes a first voltage-dividing resistor and a second voltage-dividing resistor, and the input module further includes a third voltage-dividing resistor and a fourth voltage-dividing resistor; wherein, the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor are each connected to the voltage source, the second end of the first voltage-dividing resistor is connected to a first sampling circuit among the multiple sampling circuits, and the second end of the first voltage-dividing resistor is further connected to the first signal pin of the third connector through the first signal pin of the first connector; the second end of the second voltage-dividing resistor is connected to a second sampling circuit among the multiple sampling circuits, and the second end of the second voltage-dividing resistor is further connected to the third signal pin of the third connector through the third signal pin of the first connector; the second signal pin of the first connector is connected to the second signal pin of the third connector and is connected to the ground terminal; the third voltage-dividing resistor is connected between the first signal pin of the third connector and the third signal pin of one of the fourth connectors, or the third voltage-dividing resistor is connected between the first signal pin of the third connector and the first signal pin of one of the fourth connectors; the fourth voltage-dividing resistor is connected between the third signal pin of the third connector and the third signal pin of another fourth connector, or the fourth voltage-dividing resistor is connected between the third signal pin of the third connector and the first signal pin of the another fourth connector; the second signal pin of the third connector is connected to the second signal pin of the fourth connector; the first signal pin, the second signal pin, and the third signal pin of the one fourth connector are connected to the one second connector; the first signal pin, the second signal pin, and the third signal pin of the another fourth connector are connected to the another second connector.

9. The power supply system according to any one of claims 2 to 8, wherein, the first connector further includes a first power supply pin; the friction distance of the first signal pin, the second signal pin, or the third signal pin is less than the friction distance of the first power supply pin; wherein, the friction distance is used to indicate the movement distance of the contact point of the first signal pin, the second signal pin, or the third signal pin.

10. The power supply system according to any one of claims 1 to 9, wherein, when the power supply system is used to identify the type of a single power line, the power supply system is configured to: when the rated power of the power line is less than the rated power of the power supply module, output active power according to the rated power of the power line; when the rated power of the power line is greater than the rated power of the power supply module, output active power according to the rated power of the power supply module.

11. The power supply system according to any one of claims 1 to 9, wherein, When the types of the first power cord and the second power cord among the multiple power cords identified by the power supply system are different, the power supply system is configured to: Output active power according to the rated power of the first power cord; or, output active power according to the rated power of the second power cord and issue an alarm message, where the rated power of the first power cord is less than the rated power of the second power cord; the alarm message is used to indicate replacing the first power cord.

12. The power supply system according to any one of claims 1 to 9, wherein when the types of the first power cord and the second power cord among the multiple power cords identified by the power supply system are the same, the power supply system is configured to: When the rated power of the first power cord or the second power cord is less than the rated power of the power module, output active power according to the rated power of the first power cord or the second power cord; when the rated power of the first power cord or the second power cord is greater than the rated power of the power module, output active power according to the rated power of the power module.

13. A network device, wherein it includes a power cord and the power supply system according to any one of claims 1 to 12; the power supply system is connected to the power cord.

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