TW202340910A - Power supply unit, personal computer system and the method of switch power consumption - Google Patents

Abstract

A power supply unit, personal computer system and the method of switch power consumption is provided. The power supply unit comprise a first output end, a second output end, a detect unit and an output adjust unit. The detect unit connect to the first output end and the second output end. The detect unit generates a power adjust signal according to a first identify signal of the first output end and a second identify signal of the second output end. The output adjust unit output a first power to the first output end and a second power to the second output end according to power adjust signal.

Description

Power supplies, personal computer systems and output power consumption switching methods

It relates to a power equipment, a personal computer and a power output switching method, and in particular to a power supply, a personal computer system and a switching method of output power consumption.

With the rapid development of computer display technology, more powerful graphics processing is required. In addition to providing higher resolution or higher-order color depth, current display cards (video cards or graphic cards) also require faster graphics operations. Since a large amount of graphics operations consume a lot of energy, a power supply unit with a lower rated power cannot handle the operation of the graphics card.

The power consumption of the graphics card needs to match the power supply to ensure that the graphics card can operate normally. Since the output power consumption of the power supply is fixed, there is a risk of overloading the power supply when connected to multiple high-power electronic devices at the same time. If a single (or multiple) low-power graphics card is paired with a high-rated output power supply, the graphics card can still operate normally. If a high-power graphics card is used with a low-rated output power supply, the graphics card may not operate or may be damaged.

In view of this, in some embodiments, the power supply includes a first power supply terminal, a second power supply terminal, a detection unit and an output adjustment unit. The detection unit is connected to the first power supply end and the second power supply end. The detection unit generates a power adjustment signal. The power adjustment signal is based on the first identification signal of the first power supply end and the second identification signal of the second power supply end. The output adjustment unit is connected to The first power supply end, the second power supply end and the detection unit, the output adjustment unit outputs the first operating power to the first power supply end and the second power supply end outputs the second operating power according to the power adjustment signal. The power supply provides corresponding output power according to different connected devices so that the connected devices can operate at rated power or stable power.

In some embodiments, the first identification signal includes a first connection signal, a first sensing signal and a second sensing signal; the second identification signal includes a second connection signal, a third sensing signal and a fourth sensing signal.

In some embodiments, the first power supply terminal is connected to the first power interface of the first device, and the detection unit detects the first connection signal of the first power supply terminal to determine whether the first power supply terminal is connected to the first power interface. The first rated power consumption information of the first device is obtained according to the first induction signal and the second induction signal. The first rated power consumption information is adapted to the first operating power; the second power supply end is connected to the second power interface of the second device. , the detection unit detects the second connection signal of the second power supply terminal to determine whether the second power supply terminal is connected to the second power interface, and the detection unit obtains the second rated power consumption of the second device according to the third induction signal and the fourth induction signal. Information, the second rated power consumption information is adapted to the second operating power.

In some embodiments, a personal computer system includes a first device, a first device and a power supply. The first device has first rated power consumption information; the second device has second rated power consumption information; the power supply includes a first power supply end, a second power supply end, a detection unit and an output adjustment unit, and the first power supply end is connected to The first device, the second power supply terminal is connected to the second device, the detection unit is connected to the first power supply terminal and the second power supply terminal, the output adjustment unit is connected to the first power supply terminal, the second power supply terminal and the detection unit, and the detection unit The unit detects the first identification signal of the first power supply terminal and the second identification signal of the second power supply terminal to generate a power adjustment signal. The output adjustment unit outputs the first operating power to the first power supply terminal and the second power supply to the second power supply terminal according to the power adjustment signal. Two operating powers, the first rated power consumption information is adapted to the first operating power, and the second rated power consumption information is adapted to the second operating power.

In some embodiments, the method for switching output power consumption includes connecting the first power interface and the second power interface to a power supply; the power supply obtains a first identification signal of the first power interface and a second signal of the second power interface. Identification signal; the power supply outputs the first operating power to the first power interface according to the first identification signal; the power supply outputs the second operating power to the second power interface according to the second identification signal.

The described switching method between the power supply, the personal computer system and the output power consumption can enable the power supply to automatically identify its rated power consumption according to different connected devices and provide corresponding output power so that the connected device can operate at the rated power consumption. Run on electric power or stable power.

Please refer to FIG. 1 and FIG. 2 , which are a schematic diagram of the architecture of the personal computer system and the schematic diagram of the power supply of this embodiment. The personal computer system 100 at least includes a first device 110, a second device 120 and a power supply 130. The power supply 130 is electrically connected to the first device 110 and the second device 120. The power supply 130 can also be selectively connected to the system component 140.

The first device 110 has first rated power consumption information 111 and a first power interface 112 . The second device 120 has second rated power consumption information 121 and a second power interface 122 . The first device 110 and the second device 120 may be, but are not limited to, display cards. The first rated power consumption information 111 is the rated load power of the first device 110 , and the second rated power consumption information 121 is the rated load power of the second device 120 . The first device 110 and the second device 120 are respectively electronic devices conforming to the Peripheral Component Interconnect Express 5.0 (PCIe5.0 for short) standard. In the following, electronic device is used as a general term for the first device 110, the second device 120 or other devices. The first power interface 112 and the second power interface 122 are both 12VHPWR type connectors or 48VHPWR type connectors.

The power supply 130 includes a first power supply terminal 131 , a second power supply terminal 132 , a third power supply terminal 133 , a detection unit 134 , an output adjustment unit 135 , a power source terminal 136 and a power conversion unit 137 . The detection unit 134 is connected to the first power supply terminal 131 and the second power supply terminal 132 . The output adjustment unit 135 is connected to the first power supply terminal 131 , the second power supply terminal 132 , the detection unit 134 and the power conversion unit 137 . The power conversion unit 137 is connected to the third power supply terminal 133 , the power source terminal 136 and the output adjustment unit 135 .

The first power supply terminal 131 is connected to the first power interface 112 of the first device 110 . The second power supply terminal 132 is connected to the second power interface 122 of the second device 120 . In addition to providing operating power for the first device 110 , the first power supply terminal 131 also transmits the first identification signal 113 for the detection unit 134 to detect the first identification signal 113 of the first power supply terminal 131 . The detection unit 134 transmits the power adjustment signal 151 to the output adjustment unit 135. The generation method of the power adjustment signal 151 will be described later. The first identification signal 113 includes first rated power consumption information 111 . The second power supply terminal 132 provides operating power for the second device 120 and also transmits the second identification signal 123 of the second device 120 . The second identification signal 123 includes second rated power consumption information 121 . The third power supply terminal 133 is connected to the system component 140 of the personal computer, such as a motherboard or a storage device. The third power supply terminal 133 transmits operating power 211 to the system component 140 .

The power source terminal 136 is connected to an external power supply (no label), which may be but is not limited to commercial power or other external power. The power conversion unit 137 converts the external power of the power source end 136 into working power 211 for each system component 140 or electronic device in the personal computer. Because the preset output power consumption of the power supply 130 is fixed. When the power supply 130 is connected to multiple high-power-consuming devices at the same time, so that the overall power consumption output is greater than the power provided by the power supply 130, an overload situation will occur. In order to avoid overload caused by connecting multiple high-power-consuming devices, the power supply 130 adjusts the output load-related mechanism according to the connected electronic devices. To further explain the power consumption adjustment process of the power supply 130, please refer to FIG. 3, which is a schematic diagram of the switching flow of output power consumption in this embodiment. Step S310: Connect the first power interface and the second power interface to the power supply; Step S320: The power supply obtains the first identification signal of the first power interface and the second identification signal of the second power interface; Step S330: The power supply outputs the first operating power to the first power interface according to the first identification signal; and Step S340: The power supply outputs the second operating power to the second power interface according to the second identification signal.

First, connect the first device 110 and the second device 120 to the power supply 130 . The first power interface 112 of the first device 110 is connected to the first power supply terminal 131 . The second power interface 122 of the second device 120 is connected to the second power supply end 132 . When the first device 110 and the second device 120 are connected to the power supply 130, the power supply 130 can be in the shutdown mode (S5 mode) of the Advanced Configuration and Power Interface (ACPI) protocol. The first device 110 and the second device 120 perform signal detection. If the first device 110 is correctly connected to the first power supply terminal 131, the detection unit 134 can obtain the first identification signal 113 through the first power interface 112 and the first power supply terminal 131. Similarly, the detection unit 134 can also obtain the second identification signal 123 of the second device 120 .

The detection unit 134 generates the power adjustment signal 151 according to the first identification signal 113 and the second identification signal 123 . The detection unit 134 sends the power adjustment signal 151 to the output adjustment unit 135 so that the output adjustment unit 135 outputs the first operating power 221 to the first power supply end 131 . The first power supply terminal 131 transmits the first operating power 221 to the first device 110 . The output adjustment unit 135 outputs the second operating power 222 to the second power supply terminal 132 for providing the second operating power 222 to the second device 120 . The first rated power consumption information 111 is adapted to the first operating power 221 . In other words, the first operating power 221 complies with the specified operating power of the first rated power consumption information 111 . Similarly, the second rated power consumption information 121 is adapted to the second operating power 222 .

The first power interface 112 includes a plurality of power pins 411 and a plurality of signal pins 412, as shown in FIG. 4 . The arrangement of the power pins 411 and the signal pins 412 in FIG. 4 is only for illustration and is not limited thereto. The power pin 411 of the first power interface 112 receives operating power from the first power supply end 131 . Similarly, the second power interface 122 also includes a plurality of power pins 411 and a plurality of signal pins 412 . The power pin 411 of the second power interface 122 receives operating power from the second power supply end 132 . The signal pin 412 can be the zero sensing pin (sense0, corresponding to S3 of the PCIe5.0 specification), the first sensing pin (sense1, corresponding to the S4 of the PCIe5.0 specification) and the connection sensing pin (CARD_CBL_PRES) of the 12VHPWR type connector #, corresponding to S2 of PCIe5.0 specification).

In order to distinguish individual signals in the first identification signal 113 and the second identification signal 123, the first identification signal 113 and the second identification signal 123 are further defined respectively. The first identification signal 113 includes a first connection signal (CARD_CBL_PRES#), a first sensing signal (sense0) and a second sensing signal (sense1). The second identification signal 123 includes a second connection signal (CARD_CBL_PRES#), a third sensing signal (sense0) and a fourth sensing signal (sense1). The connection sensing pin of the first power interface 112 transmits the first connection signal. The zero sensing pin of the first power interface 112 transmits the first sensing signal. The first sensing pin of the first power interface 112 transmits the second sensing signal. The connection sensing pin of the second power interface 122 transmits the second connection signal. The zero sensing pin of the second power interface 122 transmits the third sensing signal. The first sensing pin of the second power interface 122 transmits the fourth sensing signal.

The detection unit 134 determines whether the first device 110 is correctly connected to the first power supply end 131 according to the first connection signal. For example, if the connection signal is at a low potential level (low), it means that the device is connected to the power supply. On the contrary, if the connection signal is high, it means that the device is not connected to the power supply. Similarly, the detection unit 134 can also determine whether the second device 120 is connected to the second power supply end 132 according to the second connection signal. The detection unit 134 generates different adjustment signals according to the combination of the received first connection signal and the second connection signal, as shown in Table 1 below. first connection signal Second connection signal power adjustment signal low potential low potential first adjustment signal low potential high potential second adjustment signal high potential low potential second adjustment signal high potential high potential The third adjustment signal Table 1. Correspondence table between connection signals and power adjustment signals

When the first connection signal and the second connection signal are both at low potential levels, the detection unit 134 generates a first adjustment signal (ie, the power adjustment signal 151). The detection unit 134 transmits the first adjustment signal to the output adjustment unit 135 . The output adjustment unit 135 adjusts the operating power 211 output by the power conversion unit into the first operating power 221 and the second operating power 222 respectively according to the first adjustment signal, and provides the aforementioned operating power to the first power supply terminal 131 and the second power supply. End 132. The first operating power 221 and the second operating power 222 may be the same power, or may be two sets of different power values.

If it is the second adjustment signal, it means that the first power supply terminal 131 (or the second power supply terminal 132) is connected to the electronic device. The detection unit 134 can determine whether the first power supply terminal 131 or the second power supply terminal 132 is connected to an electronic device according to the low potential level of the connection signal. The output adjustment unit 135 outputs the first operating power 221 (or the second operating power 222) to the corresponding power supply end and electronic device according to the second adjustment signal. If it is the third adjustment signal, it means that the first power supply terminal 131 and the second power supply terminal 132 are not connected to the electronic device. Therefore, the detection unit 134 sends the third adjustment signal to the output adjustment unit 135 . The output adjustment unit 135 may output a preset operating power, or may not output operating power to the first power supply terminal 131 and the second power supply terminal 132 .

Assume that the first power supply terminal 131 is connected to the first device 110 and the second power supply terminal 132 is not connected to the second device 120 . In other words, the first connection signal is at a low potential and the second connection signal is at a high potential, and the detection unit 134 generates the second adjustment signal. The detection unit 134 transmits the second adjustment signal to the output adjustment unit 135 . The output adjustment unit 135 outputs the operating power 211 to the first power supply end 131 and the first device 110 according to the second adjustment signal. On the contrary, if the second power supply terminal 132 is connected to the second device 120 and the first power supply terminal 131 is not connected to the first device 110, the output adjustment unit 135 outputs the operating power 211 to the second power supply terminal 132 and the second device 120 according to the second adjustment signal. . If both the first power supply terminal 131 and the second power supply terminal 132 are at high potential, the output adjustment unit 135 will receive the third adjustment signal. The output adjustment unit 135 does not output the operating power 211 to the first power supply terminal 131 and the second power supply terminal 132 according to the third adjustment signal. Alternatively, the output adjustment unit 135 maintains the first operating power 221 and the second operating power 222 according to the third adjustment signal.

In some embodiments, the detection unit 134 generates the corresponding power adjustment signal 151 according to the zero sensing pin and the first sensing pin of the first power interface 112 and the second power interface 122 respectively. In other words, the detection unit 134 obtains the first rated power consumption information 111 and the second rated power consumption information 121 through different signal combinations. The zero sensing pin of the first power interface 112 transmits the first sensing signal. The first sensing pin of the first power interface 112 transmits the second sensing signal. The connection sensing pin of the second power interface 122 transmits the second connection signal. The zero sensing pin of the second power interface 122 transmits the third sensing signal. The first sensing pin of the second power interface 122 transmits the fourth sensing signal.

The level states of the first sensing signal, the second sensing signal, the third sensing signal and the fourth sensing signal include either a ground state (GND) or an open circuit state (open). The detection unit 134 further identifies the corresponding first rated power consumption information 111 and the second rated power consumption information 121 according to the sensing signals of sensing pin No. 0 and sensing pin No. 1. In order to facilitate the explanation of the power adjustment signal 151 and operating power corresponding to different sensing signals, the following takes graphics cards with different rated power consumption as examples, but is not limited to the mentioned rated power consumption. Assume that each graphics card is rated at 600 watts, 450 watts, 300 watts, or 150 watts. And when the No. 0 sensing pin and the No. 1 sensing pin are located at different sensing signals, they correspond to the corresponding rated power consumption in Table 2 below. Sensor pin zero (Sense0) No. 1 sensing pin (Sense1) Corresponding rated power consumption (W) open the way open the way 150 ground open the way 300 open the way ground 450 ground ground 600 Table 2. Output correspondence table between signal pins and power supply terminals

Assume that the first sensing signal and the second sensing signal of the first device 110 are "ground" and "ground" respectively. The detection unit 134 can obtain the first rated power consumption information 111 corresponding to the rated power consumption of 600 watts. The detection unit 134 will send the corresponding power adjustment signal 151 to the output adjustment unit 135, so that the first power supply end 131 outputs the first operating power 221 of 600 watts. Similarly, if the third sensing signal and the fourth sensing signal of the second device 120 are "grounded" and "open circuit" respectively, the detection unit 134 obtains the second rated power consumption information 121 corresponding to the rated power consumption of 300 watts. The detection unit 134 sends the corresponding power adjustment signal 151 to the output adjustment unit 135 so that the second power supply terminal 132 outputs a second operating power 222 of 300 watts to the second device 120 .

Combined with the aforementioned different power adjustment signals 151 each corresponding to different operating power options, different operating power combination options can be further provided. Taking the aforementioned display card as an example, the power consumption of the display card is 600 watts, 450 watts, 300 watts and 150 watts respectively, and the rated power consumption of the power supply 130 is not considered. The aforementioned wattage is for illustration only and is not limited thereto. Please also refer to Table 3 below, which is a combination table of various adjustment signals and operating power options. power adjustment signal Operating power options first adjustment signal 450W vs. 450W 450W and 300W 450W and 150W 300W and 300W 300W and 150W 150W and 150W second adjustment signal 600W 450W 300W 150W without without The third adjustment signal No output maintain output Table 3. Adjustment signal and operating power option combination table

If the output adjustment unit 135 receives the first adjustment signal, the output adjustment unit 135 may output the first operating power 221 and the second operating power 222 according to the first identification signal 113 and the second identification signal 123 . In the row of the first adjustment signal in Table 3, the output adjustment unit 135 can select any two of the operating power options of 450 watts, 300 watts and 150 watts, and output them to the corresponding power supply end. Similarly, after receiving the second adjustment signal, the output adjustment unit 135 outputs the adjustment signal and determines whether the first power supply end 131 or the second power supply end 132 is connected to the electronic device based on the first connection signal and the second connection signal. If the output adjustment unit 135 receives the third adjustment signal, it means that neither the first power supply end 131 nor the second power supply end 132 is connected to an electronic device. The output adjustment unit 135 may choose not to output operating power to each power supply terminal, or the output adjustment unit 135 may maintain the current operating power and output it to the first power supply terminal 131 and the second power supply terminal 132 .

In some embodiments, in addition to receiving the first identification signal 113 and the second identification signal 123 , the detection unit 134 also receives output power information 511 . The output power information 511 is the rated output power of the power supply 130 . The power supply 130 may be further provided with a storage unit 510, as shown in FIG. 5 . The storage unit 510 records the output power information 511 and the system retained power consumption information 512. The detection unit 134 reads the output power information 511 to obtain the actual output power of the power supply 130 . The detection unit 134 generates the power adjustment signal 151 according to the output power information 511, the first identification signal 113 and the second identification signal 123, so that the sum of the first operating power 221 and the second operating power 222 is less than the rated output power of the power supply 130 . The system retained power consumption information 512 is the operating power consumption required by the system components 140 and so on of the personal computer system 100 .

Assume that the rated output power of the power supply 130 is 1000 watts. When the power supply 130 is connected to two 600-watt graphics cards, the detection unit 134 selects the corresponding operating power option from Table 3 based on the first identification signal 113, the second identification signal 123 and the output power information 511. If the personal computer system 100 prioritizes the graphics card, the detection unit 134 may select two sets of 450-watt first adjustment signals and send them to the output adjustment unit 135 . Alternatively, the personal computer system 100 takes system operation as a priority strategy, and the detection unit 134 can select two sets of 300-watt first adjustment signals according to the system retained power consumption information 512 and send them to the output adjustment unit 135 .

In some embodiments, please refer to FIG. 6 , which is a schematic diagram of the connection and architecture of the power supply 130 and the third device 610 according to an embodiment. The power supply 130 of this embodiment includes a first power supply terminal 131, a second power supply terminal 132, a third power supply terminal 133, a detection unit 134, an output adjustment unit 135, a power source terminal 136 and a power conversion unit 137. The first power supply terminal 131 and the second power supply terminal 132 are respectively connected to the first power interface 621 and the second power interface 622 of the third device 610 . The third device 610 has first rated power consumption information 611 and second rated power consumption information 612 . The first power interface 621 transmits first rated power consumption information 611, and the second power interface 622 transmits second rated power consumption information 612.

When the first power supply end 131 is connected to the first power interface 621, the detection unit 134 detects the first power interface 621 and the associated first rated power consumption information 611. When the second power supply terminal 132 is connected to the second power interface 622, the detection unit 134 detects the second power interface 622 and the associated second rated power consumption information 612. The third device 610 can be connected to the first power supply terminal 131 and the second power supply terminal 132 at the same time, thereby obtaining a rated power consumption greater than that specified by PCIe5.0. Generally speaking, the upper limit of PCIe5.0's rated power consumption for graphics cards is 600 watts. If the third device 610 is a graphics card and its rated power consumption can be 900 watts. The first rated power consumption information 611 and the second rated power consumption information 612 of the third device 610 may both be a combination of 450 watts, or a combination of 600 watts and 300 watts. The power supply 130 can provide the third device 610 with a rated power consumption higher than the original PCIe5.0 specification through the identification of the first rated power consumption information 611 and the second rated power consumption information 612 .

In some embodiments, please refer to FIG. 7 , which is an architectural schematic diagram of the power supply of this embodiment. The power supply 730 of this embodiment includes a first power supply terminal 731, a second power supply terminal 732, a third power supply terminal 733, a switching unit 734, an output adjustment unit 735, a power source terminal 736 and a power conversion unit 737. The first power supply terminal 731 is connected to the first power interface 711 of the first device 710 . The second power supply terminal 732 is connected to the second power interface 721 of the second device 720 . The output adjustment unit 735 is connected to the first power supply terminal 731 , the second power supply terminal 732 , the switching unit 734 and the power conversion unit 737 . The power conversion unit 737 is connected to the third power supply terminal 733 , the power source terminal 736 and the output adjustment unit 735 . The power source terminal 736 is connected to an external power source, which may be but is not limited to commercial power or other external power. The third power supply terminal 733 is connected to the system component 740 .

The switching unit 734 may be, but is not limited to, a dip switch, a micro switch or a rotary switch. The switching unit 734 has at least a first state and a second state. The switching unit 734 sends the first power adjustment signal to the output adjustment unit 735 in the first state, and sends the second power adjustment signal to the output adjustment unit 735 in the second state. The output adjustment unit 735 converts the working power into the first operating power according to the first power adjustment signal, and the output adjustment unit 735 provides the first operating power to the first power supply terminal 731 and the second power supply terminal 732 . Similarly, the output adjustment unit 735 converts the operating power into the second operating power according to the second power adjustment signal, and the output adjustment unit 735 provides the second operating power to the first power supply end 731 and the second power supply end 732 .

The described switching method between the power supply 130, the personal computer system 100 and the output power consumption can enable the power supply 130 to automatically identify its rated power consumption according to different connected devices, and provide corresponding output power, so that the connected devices can Operate under rated power or stable power.

100:Personal computer system 110, 710: first equipment 111, 611: First rated power consumption information 112, 621, 711: first power interface 113: First identification signal 120, 720: Second device 121, 612: Second rated power consumption information 122, 622, 721: Second power interface 123: Second identification signal 130, 730: Power supply 131, 731: first power supply terminal 132, 732: Second power supply terminal 133, 733: Third power supply terminal 134:Detection unit 135, 735: Output adjustment unit 136, 736: Power source end 137, 737: Power conversion unit 140, 740: System components 151:Power adjustment signal 211: Working power 221:First operating power 222: Second operating power 411:Power pin 412: Signal pin 510:Storage unit 511:Output power information 512: The system retains power consumption information 610:Third device 734:Switch unit S310~S340: steps

[Fig. 1] is an architectural schematic diagram of a personal computer system according to this embodiment. [Fig. 2] is a schematic structural diagram of the power supply of this embodiment. [Fig. 3] is a schematic diagram of the switching flow of output power consumption in this embodiment. [Fig. 4] is a schematic diagram of the power pins and signal pins of each power interface in this embodiment. [Fig. 5] is a schematic structural diagram of the power supply of this embodiment. [Fig. 6] is a schematic diagram of the connection and structure of the power supply and the third device in this embodiment. [Fig. 7] is a schematic structural diagram of the power supply of this embodiment.

100:Personal computer system

110:First device

111: First rated power consumption information

113: First identification signal

120: Second device

121: Second rated power consumption information

123: Second identification signal

130:Power supply

140:System components

221:First operating power

222: Second operating power

Claims (16)

A power supply including: a first power supply terminal; a second power supply terminal; A detection unit is connected to the first power supply end and the second power supply end. The detection unit generates a power adjustment signal. The power adjustment signal is based on a first identification signal of the first power supply end and a first identification signal of the second power supply end. a second identification signal; and An output adjustment unit is connected to the first power supply end, the second power supply end and the detection unit. The output adjustment unit outputs a first operating power and the second power supply to the first power supply end according to the power adjustment signal. The terminal outputs a second operating power. The power supply as claimed in claim 1, wherein the detection unit generates the power adjustment signal according to an output power information of the power supply, the first identification signal and the second identification signal. The power supply as claimed in claim 1, wherein the detection unit generates the power adjustment signal based on an output power information of the power supply, a system retained power consumption information, the first identification signal and the second identification signal. . The power supply as claimed in claim 1, wherein the first identification signal includes a first connection signal, a first induction signal and a second induction signal; the second identification signal includes a second connection signal, a first induction signal Three induction signals and a fourth induction signal. The power supply as claimed in claim 4, wherein the first power supply terminal is connected to a first power interface of a first device, and the detection unit detects the first connection signal of the first power supply terminal to determine the first Whether the power supply end is connected to the first power interface, the detection unit obtains a first rated power consumption information of the first device according to the first induction signal and the second induction signal, and the first rated power consumption information is adapted In the first operating power; the second power supply terminal is connected to a second power interface of a second device, and the detection unit detects the second connection signal of the second power supply terminal to determine whether the second power supply terminal is connected to The second power interface, the detection unit obtains a second rated power consumption information of the second device based on the third induction signal and the fourth induction signal, and the second rated power consumption information is adapted to the second operation Electricity. The power supply as claimed in claim 4, wherein the first power supply end and the second power supply end are respectively connected to a first power interface and a second power interface of a third device, and the detection unit is based on the first power interface. An induction signal and the second induction signal obtain a first rated power consumption information of the first power interface, and the detection unit obtains a second power consumption information of the second power interface according to the third induction signal and the fourth induction signal. Rated power consumption information, the first rated power consumption information is adapted to the first operating power, and the second rated power consumption information is adapted to the second operating power. A personal computer system including: a first device having first rated power consumption information; a second device having second rated power consumption information; and A power supply includes a first power supply terminal, a second power supply terminal, a detection unit and an output adjustment unit. The first power supply terminal is connected to the first device, and the second power supply terminal is connected to the second power supply terminal. Equipment, the detection unit is connected to the first power supply end and the second power supply end, the output adjustment unit is connected to the first power supply end, the second power supply end and the detection unit, the detection unit detects the A first identification signal of the first power supply end and a second identification signal of the second power supply end generate a power adjustment signal. The output adjustment unit outputs a first operating power to the first power supply end and a first operation power to the first power supply end according to the power adjustment signal. The second power supply terminal outputs a second operating power, the first rated power consumption information is adapted to the first operating power, and the second rated power consumption information is adapted to the second operating power. The personal computer system of claim 7, wherein the detection unit generates the power adjustment signal based on an output power information of the power supply, the first identification signal and the second identification signal. The personal computer system of claim 7, wherein the detection unit generates the power adjustment signal based on an output power information of the power supply, a system retained power consumption information, the first identification signal and the second identification signal. . The personal computer system as claimed in claim 7, wherein the first identification signal includes a first connection signal, a first sensing signal and a second sensing signal; the second identification signal includes a second connection signal, a first sensing signal Three induction signals and a fourth induction signal. The personal computer system of claim 10, wherein the first power supply terminal is connected to a first power interface of the first device, and the detection unit determines the first power supply based on the first connection signal of the first power supply terminal. Whether the terminal is connected to the first power interface, the detection unit obtains the first rated power consumption information of the first device according to the first induction signal and the second induction signal, and the first rated power consumption information is adapted to The first operating power; the second power supply terminal is connected to a second power interface of the second device, and the detection unit determines whether the second power supply terminal is connected to the second power interface according to the second connection signal of the second power supply terminal. Two power interfaces, the detection unit obtains the second rated power consumption information of the second device according to the third induction signal and the fourth induction signal, and the second rated power consumption information is adapted to the second operating power. A method for switching output power consumption, including: Connect a first power interface and a second power interface to a first power supply end and a second power supply end of a power supply respectively; The power supply obtains a first identification signal of the first power interface and a second identification signal of the second power interface; The power supply outputs a first operating power to the first power interface according to the first identification signal; and The power supply outputs a second operating power to the second power interface according to the second identification signal. The output power consumption switching method of claim 12, wherein the first identification signal includes a first connection signal, a first sensing signal and a second sensing signal; the second identification signal includes a second connection signal , a third induction signal and a fourth induction signal. The method for switching output power consumption according to claim 13, wherein the steps of the power supply obtaining the first identification signal of the first power interface and obtaining the second identification signal of the second power interface include: The power supply determines whether to connect to the first power interface of a first device based on the first connection signal; and If the first power interface is connected to the power supply, the power supply obtains a first rated power consumption information of the first power interface based on the first sensing signal and the second sensing signal. The first rated power consumption The information is adapted to the first operating power. The method for switching output power consumption according to claim 13, wherein the steps of the power supply obtaining the first identification signal of the first power interface and obtaining the second identification signal of the second power interface include: The power supply determines whether to connect to the second power interface of a second device based on the second connection signal; and If the second power interface is connected to the power supply, the power supply obtains a second rated power consumption information of the second power interface based on the third sensing signal and the fourth sensing signal. The second rated power consumption The information is adapted to the second operating power. The output power consumption switching method of claim 12, wherein the steps of the power supply obtaining the first identification signal of the first power interface and obtaining the second identification signal of the second power interface include: The power supply determines a first connection signal to determine whether it is connected to the first power interface of a third device; The power supply determines whether the second connection signal is connected to the second power interface of the third device; If the first power interface is connected to the power supply, the power supply obtains a first rated power consumption information of the first power interface based on the first sensing signal and the second sensing signal. The first rated power consumption The information is adapted to the first operating power; and If the second power interface is connected to the power supply, the power supply obtains a second rated power consumption information of the second power interface based on a third sensing signal and a fourth sensing signal. The second rated power consumption The information is adapted to the second operating power.

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