TWI685733B - Computer system and power management method - Google Patents

Abstract

A power management method is adapted to a computer system and includes: determining at least one rated output power based on an output power parameter by two power supply units; determining the output power parameter by one of two baseboard management controllers based on the magnitude of the voltage amplitude of an AC mains; controlling one of the two power supply units to operate in an activation mode or a non-activation mode based on the rated output power and a operating state of the two power supply units and a total load power of each application circuit by the other of the two power supply units operated in the activation mode.

Description

Computer system and power management method

The invention relates to a computer system and a power management method, in particular to a computer system and a power management method that effectively provide a backup function of a power supply.

A conventional computer system, such as a server cabinet, includes a power module and multiple nodes, where the power module is composed of two power supplies. The nodes may be computing modules or storage modules. The computing modules are, for example, general-purpose computing on graphics processing units (GPGPU). Each power supply supports the CRPS (Common redundant power supplies) specification developed by Intel Corporation, so that under normal operating conditions, the computer system only activates one of the two power supplies as the main power supply The controller provides the power required by the nodes included in the computer system to operate, and the other one serves as a backup power supply and is in a non-starting state or a standby state.

For example, each power supply can receive 110 volts or 220 volts AC mains, and correspondingly convert it into a DC output voltage and the DC voltage corresponds to a DC output current. However, assuming that the actual rated output power of each power supply when receiving 220 volts AC mains is 2000 watts (W), if each power supply is changed to receive 110 volts AC mains, its actual rating The output power will be corresponding to 1000 watts.

When the conventional computer system monitors the operation of the power module with a fixed predetermined rated power under normal operating conditions, for example, the power module is designed so that the two power supplies receive 220 volts AC mains, So that one of the two power supplies, that is, the main power supply provides power for the operation of the nodes included in the computer system, and the other one serves as the backup power supply and designs the computer system According to the maximum actual rated power that the main power supply can provide as a fixed predetermined rated output power to monitor the operation of the power module, the power module with backup function is generally designed by the power module The average value of the predetermined rated output power corresponding to each of the included two power supplies is taken as the predetermined rated output power of the power supply module, and it is controlled whether to turn on (or Start) the backup power supply of the power module. For example, when both of the two power supplies receive 220 volts of AC mains power, the maximum actual rated power they can provide is 2000 watts (W), then set the predetermined rated output power of the power module to 2000 watts ( W), and calculate the power supply state of the power module with 2000 watts (W) as the fixed value of the predetermined rated output power, for example, a method for calculating the power supply state of the power module under normal operation of the computer system The ratio of the power provided by the power module to the operation of the computer system (equal to the actual power consumption consumed during operation of the computer system) and the predetermined rated output power is used as the power supply state, and according to the power supply of the power module The state is compared with the safe operation threshold to obtain a comparison result, and based on the comparison result, a decision is made whether to turn on the backup power supply to switch the backup power supply from the standby state or the non-start state to the start state , Wherein, for example, the safe operation critical value is 80%, and when the power supply state is greater than or equal to 80%, the power module activates the backup power supply. However, when the user mistakenly connects the plug of the second power supply to a socket that provides 110 volts AC mains, the maximum actual rated output power that the second power supply can provide will also correspond to the received AC mains The proportional reduction is only half of the actual rated output power originally used as the predetermined rated output power, for example, from 2000 watts to 1000 watts.

At this time, since the computer system uses a fixed predetermined power rating of 2000 watts to monitor the operation of the power module, under normal operation of the computer system, only the main power supply is activated, and the main power supply is in When operating in an environment receiving 110 volts of AC mains power, even if the main power supply continues to provide the power that the computer system needs to consume with its actual rated output power at the maximum possible output, in other words, the main power supply The power provided by the power supply to the computer system continuously (equal to the actual power consumption consumed by the computer system during operation) is equal to its maximum actual rated output power, which means that the main power supply has been continuously The power supply mode is working, because under the normal operation of the computer system, only the main power supply is activated, which means that the activated part of the power module has been continuously operating with 100% power supply, but due to the conventional The predetermined rated output power set by the computer system is fixed. Therefore, when the fixed predetermined rated output power is used to monitor the operation of the power supply, the computer system will misjudge the power supply status of the power module and be the computer. The ratio of the power of the system operation (equal to the actual power consumption consumed by the computer system during operation) to the predetermined rated output, that is, the power supply state of 50%, because the calculated power supply state has not yet reached the safe operation threshold , So the power module will not activate the backup power supply, and may cause the main power supply to continue to supply power at full power for a long time to provide sufficient power to the computer system operation and accelerate the reduction The life of the main power supply may cause damage.

Relatively speaking, when the conventional computer system is in normal operating condition, the power module is designed so that the two power supplies receive 110 volts AC mains. However, when the user mistakenly connects the plug of the second power supply to a socket that provides 220 volts AC mains, the maximum actual rated output power that the second power supply can provide will also correspond to the received AC mains The proportional increase is twice the original actual rated output power as the predetermined rated output power. For example, the actual rated output power of each power supply in the power module changes from 2000 watts to 4000 watts. The power required for the operation of the computer system is 1800 watts. For the second power supply of the power module, the actual rated output power of the main power supply is 4,000 watts by default. The required 1800 watts of power can easily provide enough operating power for the entire computer system just by starting the main power supply, but because the power module uses a fixed predetermined rated output power to calculate and determine whether to start the power supply Another power supply in the module as the backup power supply, in this embodiment, the predetermined rated output power is 2000 watts, so the power supply state of the power module is calculated as the power of the computer system operation (equal to the The ratio of the actual power consumption consumed by the computer system during operation) to the predetermined rated output, which is 90% of the power supply state, because the calculated power supply state has exceeded the set safe operating threshold of 80%, then Because the two power supplies have the function of supporting the CRPS specification, the other one will be started to supply power in parallel, so that the maximum total output power is 8000 watts (that is, 4000 watts*2). In this way, although the computer system can obtain enough power to maintain normal operation, because each power supply is actually in a small amount of power supply state, for the power supply, the implementation of small or large power supply Power conversion will cause more power loss in the process of power conversion. Furthermore, a power supply module with a backup function means that the power module has a non-starting power supply under normal operation as a The power supply is backed up. However, in this example, the power module turns on all the power supplies included in the power module under normal operation, so that the power module does not have any inactive The power supply is used as a backup power supply and has lost sufficient backup capacity. That is to say, when any power supply is abnormal, the power module will start because there is no unpowered power supply. To back up the power supply that has detected an abnormality and trigger the power module to activate overload protection and turn off the output of its DC output voltage, causing the operation of the nodes of the computer system to be suddenly interrupted, which in turn leads to important data Loss, therefore, becomes a problem to be solved.

Therefore, the object of the present invention is to provide a computer system and a power management method that solve the problem of the backup function of the conventional power supply.

Therefore, one aspect of the present invention provides a computer system including N application circuits, two power supply units, and N substrate management controllers. Each application circuit receives at least a DC voltage as operating power and consumes a corresponding total load power, N is a positive integer.

Each power supply unit is electrically connected to the N application circuits, and is adapted to receive an AC mains power, and converts and outputs the at least DC voltage when the operation state is in a startup mode, and operates in the operation state to a The non-start mode does not output the at least DC voltage, and stores a first input AC voltage value, a second input AC voltage value, a pair of first output power values corresponding to the first input AC voltage value, and a pair of corresponding The second output power value of the second input AC voltage value, and a rated output power of the at least DC voltage is determined according to an output power parameter.

The substrate management controllers are electrically connected to the power supply units. Wherein, one of the substrate management controllers determines whether the output power parameter is equal to the first input AC voltage value and the second input AC voltage value according to the magnitude of the voltage amplitude of the AC mains A corresponding one of the output power value and the second output power value, and transmitting and storing the output power parameter to each power supply unit.

One of the power supply units operates in the startup mode, and also controls another power supply unit to operate based on the rated output power of each power supply unit, the operating state, and the total power of the load of each application circuit One of the start mode and the non-start mode.

In some implementations, the computer system further includes a voltage bridge controller electrically connected between the two power supply units and the N substrate management controllers and the N application circuits. Wherein, each power supply unit can detect and also store the voltage amplitude of the AC mains.

The voltage bridge controller receives the at least DC voltage from the two power supply units to output to each application circuit, and detects and stores the total power of the load of each application circuit. The voltage bridge controller can also receive an inquiry command to read the first input AC voltage value, the second input AC voltage value, the first output power value, and the second stored in each power supply unit The output power value and the voltage amplitude of the AC mains.

One of the substrate management controllers generates the query command to obtain the first input AC voltage value, the second input AC voltage value, and the second input AC voltage value stored by each power supply unit through the voltage bridge controller The first output power value, the second output power value, the magnitude of the voltage amplitude with the AC mains, and the total load power of each application circuit.

In other embodiments, when one of the power supply units operates in the startup mode and the other of the power supply units operates in the non-startup mode, the power supply unit operating in the startup mode calculates 1. Power supply status. The power supply state is equal to the sum of the total load power of each application circuit divided by the rated output power of the power supply unit operating in the startup mode. When the power supply unit operating in the startup mode determines that the power supply state is greater than a predetermined first safe operation threshold, the other of the power supply units is controlled to operate in the startup mode instead.

In other embodiments, when the two power supply units operate in the startup mode, one of the power supply units calculates a power supply state. The power supply state is equal to the sum of the total load power of each application circuit divided by the sum of the rated output powers of the two power supply units operating in the startup mode. When one of the power supply units determines that the power supply state is less than a predetermined second safe operation threshold, the other of the power supply units is controlled to operate in the inactive mode instead.

In other embodiments, wherein each substrate management controller determines a load threshold corresponding to each application circuit according to the voltage amplitude of the AC mains, the load threshold is less than a rated total output power, And the magnitude of the load threshold is related to the magnitude of the rated total output power. The rated total output power is equal to the sum of the rated output powers of the two power supply units operating in the startup mode.

The N substrate management controllers are also electrically connected to the N application circuits, respectively, when one of the substrate management controllers determines that the total load power of the corresponding application circuit is greater than or equal to the corresponding load threshold, Notify that the corresponding substrate management controller also generates a load reduction instruction to the corresponding application circuit, so that the total power of the load consumed by the corresponding application circuit becomes smaller.

Therefore, another aspect of the present invention provides a power management method suitable for a computer system including N application circuits, two power supply units, and N substrate management controllers, where N is a positive integer. The power management method includes steps (a) to (e).

In step (a), each application circuit receives at least a DC voltage as operating power and consumes a corresponding total load power.

In step (b), each of the power supply units is adapted to receive an AC mains power, and convert and output the at least DC voltage when the operating state is in a starting mode, and operate in a non-operating state The at least DC voltage is not output during the startup mode, and a first input AC voltage value, a second input AC voltage value, a pair of first output power values corresponding to the first input AC voltage value, and a pair of A second output power value of two input AC voltage values, and a rated output power of the at least DC voltage is determined according to an output power parameter.

In step (c), one of the substrate management controllers determines which of the first input AC voltage value and the second input AC voltage value corresponds to the AC mains voltage amplitude The output power parameter is equal to the corresponding of the first output power value and the second output power value, and the output power parameter is transmitted and stored to each power supply unit.

In step (d), by one of the power supply units operating in the startup mode, and based on the rated output power of each power supply unit, the operating state, and the total load power of each application circuit, Controlling another power supply unit to operate in one of the start mode and the non-start mode.

In some embodiments, the computer system further includes a voltage bridge controller, and the power management method further includes steps (e) and (f). In step (b), each power supply unit can detect Measure and store the voltage amplitude of the AC mains.

In step (e), the at least DC voltage from the two power supply units is received by the voltage bridge controller to output to each application circuit, and the total load of each application circuit is detected and stored The size of the power.

In step (f), the voltage bridge controller can also receive an inquiry command to read the first input AC voltage value, the second input AC voltage value, and the first An output power value, the second output power value, and the voltage amplitude of the AC mains.

In step (c), one of the substrate management controllers generates the query instruction to obtain the first input AC voltage value and the first input stored in each power supply unit through the voltage bridge controller Two input AC voltage values, the first output power value, the second output power value, the magnitude of the voltage amplitude with the AC mains, and the total power of the load of each application circuit.

In other embodiments, wherein, in step (d), when one of the power supply units operates in the startup mode and the other of the power supply units operates in the non-startup mode, it operates in the startup The power supply unit of the mode calculates a power supply state. The power supply state is equal to the sum of the total load power of each application circuit divided by the rated output power of the power supply unit operating in the startup mode. When the power supply unit operating in the startup mode determines that the power supply state is greater than a predetermined first safe operation threshold, the other of the power supply units is controlled to operate in the startup mode instead.

In other embodiments, wherein, in step (d), when the two power supply units operate in the startup mode, one of the power supply units calculates a power supply state. The power supply state is equal to the sum of the total load power of each application circuit divided by the sum of the rated output powers of the two power supply units operating in the startup mode. When one of the power supply units determines that the power supply state is less than a predetermined second safe operation threshold, the other of the power supply units is controlled to operate in the inactive mode instead.

In other embodiments, the power management method further includes step (g), wherein each substrate management controller determines a load threshold corresponding to each application circuit according to the voltage amplitude of the AC mains, The load threshold is less than a rated total output power, and the magnitude of the load threshold is related to the rated total output power. The rated total output power is equal to the sum of the rated output powers of the two power supply units operating in the startup mode.

When one of the substrate management controllers determines that the total load power of the corresponding application circuit is greater than or equal to the corresponding load threshold, the corresponding substrate management controller is notified to also generate a load reduction command to the corresponding The application circuit reduces the total power of the load consumed by the corresponding application circuit.

The effect of the present invention is that one of the substrate management controllers determines the output power parameter according to the voltage amplitude of the AC mains, so that each power supply unit determines the at least DC current according to the output power parameter The rated output power of the voltage. One of the power supply units operates in the startup mode, and also controls another power supply according to the rated output power of each power supply unit, the operating state, and the total power of the load of each application circuit The unit operates in one of the start mode and the non-start mode, and can solve the problems of the conventional technology.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

Referring to FIG. 1, the computer system of the present invention includes two main boards 2, 3, two baseboard management controllers (BMC) 21, 31, two application circuits 22, 32, and a power distribution board (PDB) 4 , A voltage bridge controller 5, and two power supply units (Power Supply Unit, PSU) 11, 12.

The computer system is, for example, a server cabinet. The two baseboard management controllers 21 and 31 and the two application circuits 22 and 32 are respectively disposed on the two mainboards 2 and 3 to form two nodes (Node). Each application circuit 22, 32 includes, for example, a central processing unit (CPU), a chipset, a disk storage unit (such as a hard disk drive), and a general-purpose graphic processing unit (General-purpose) At least one of computing on graphics processing units (GPGPU) chips, a graphics display chip, or any element of the server that requires power consumption.

Referring to FIGS. 1 and 2, FIG. 2 is an embodiment of the computer system performing a power management method. The power management method includes steps S11 to S18.

In step S11, each of the application circuits 22, 32 receives the at least DC voltages Vout1, Vout2 as operating power, and consumes the corresponding total load power.

In step S12, each of the power supply units 11, 12 is adapted to receive an alternating current mains AC1, and converts and outputs at least DC voltage Vin1, Vin2 when the operation state is in a startup mode, and operates in the operation When the state is a non-start mode, the at least DC voltage Vin1 and Vin2 are not output, and a first input AC voltage value, a second input AC voltage value, and a first output power corresponding to the first input AC voltage value are stored Value and a second output power value corresponding to the second input AC voltage value, and a rated output power of the at least DC voltage is determined according to an output power parameter. For example, each power supply unit 11, 12 includes at least one power supply.

In this embodiment, the two power supply units 11 and 12 respectively receive the same AC mains AC1 through two wires (not shown) and two jacks of the socket. The voltage amplitude of the AC mains AC1 is, for example, 110 volts or 220 volts. For convenience, the two DC voltages Vin1 and Vin2 include multiple DC voltages at the same time. For example, the DC voltage Vin1 represents three types of DC voltages of 12 volts, 5 volts, and 3.3 volts, and the DC voltage Vin2 also represents Three DC voltages of 12 volts, 5 volts, and 3.3 volts, but not limited to this. In other words, the two power supply units 11 and 12 output three DC voltages of 12 volts, 5 volts, and 3.3 volts.

Each of the power supply units 11, 12 also detects the AC mains AC1, and also stores the voltage amplitude of the AC mains AC1, and also supports CRPS (Common redundant power supplies) specifications, and is installed on the power distribution board A bus CR on 4 transmits and receives information.

In step S13, the voltage bridging controller 5 receives the at least DC voltages Vin1 and Vin2 from the two power supply units 11, 12 and also electrically connects the two application circuits 22, 32 to connect the two DC voltages Vout1 , Vout2 output to each application circuit 22, 32, and detect and store the total power of a load of each application circuit 22, 32

For example, the voltage bridge controller 5 outputs the received DC voltages Vin1, Vin2 of 12 volts, 5 volts, and 3.3 volts respectively according to a predetermined output power ratio to two DC voltages Vout1, Vout2 to The two application circuits 22, 32, that is, the DC voltages Vout1, Vout2 include output voltages of 12 volts, 5 volts, and 3.3 volts, and the total power of the DC voltages Vin1, Vin2 is equal to the DC voltages Vout1, Vout2 The total power.

It should be added that the two DC voltages Vout1 and Vout2 not only provide the two application circuits 22 and 32 as operating power, but also provide other components provided on the two main boards 2 and 3, such as the Second board management controller 21, 31.

In step S14, the voltage bridge controller 5 can also receive an inquiry command to read the first input AC voltage value and the second input AC voltage value stored in each power supply unit 11, 12 The first output power value, the second output power value, and the magnitude of the voltage amplitude of the AC mains AC1. In this embodiment, the voltage bridge controller 5 is, for example, a microcontroller (MCU), but not limited to this.

In step S15, one of the substrate management controllers 21, 31 generates the query command to obtain the first input AC voltage stored by each power supply unit 11, 12 through the voltage bridge controller 5 Value, the second input AC voltage value, the first output power value, the second output power value, the magnitude of the voltage amplitude with the AC mains AC1, and the total power of the load of each application circuit 22, 32. One of the substrate management controllers 21 and 31 determines the output power parameter to be equal to which of the first input AC voltage value and the second input AC voltage value corresponds to the voltage amplitude of the AC mains AC1 Correspondence between the first output power value and the second output power value, and the output power parameter is transmitted and stored to each of the power supply units 11, 12.

More specifically, one of the substrate management controllers 21, 31 is one of the substrate management controllers 21, 31 operating in a master mode. In addition, between the two baseboard management controllers 21, 31 and the voltage bridge controller 5, and between the voltage bridge controller 5 and the two power management units 11, 12, information is exchanged through a plurality of signals S1~S4 And the signals S1~S4 support the power supply management interface (PSMI).

In step S16, by one of the power supply units 11 (or 12) operating in the startup mode, and according to the rated output power of each power supply unit 11, 12 according to the rated output power, the operating state and the each application circuit The total power of the load at 22 and 32 controls the other power supply unit 12 (or 11) to operate in one of the start mode and the non-start mode. For example, one of the power supply units 11 (or 12) is the two power supply units 11, 12 according to the CRPS specification and one of them decides to operate in a master control mode.

More specifically, when one of the power supply units 11 (or 12) operates in the startup mode and the other of the power supply units 12 (or 11) operates in the non-start mode, the The power supply unit 11 (or 12) calculates a power supply state. The power supply state is equal to the sum of the total load power of each application circuit 22, 32 divided by the rated output power of the power supply unit 11 (or 12) operating in the startup mode. When the power supply unit 11 (or 12) operating in the startup mode determines that the power supply state is greater than a predetermined first safe operation threshold, the other of the power supply units is controlled to operate in the startup mode 12 (or 11).

For example, the first input AC voltage value, the second input AC voltage value, the first output power value, and the second output power value are 110 volts, 220 volts, 500 watts, and 1000 watts, respectively. When the voltage amplitude of the AC mains AC1 is equal to the first input AC voltage value (ie 110 volts), and the corresponding rated output power is equal to the first output power value (ie 500 watts), it is assumed that the total power of the load is equal to 450 Watts, and the first safe operating threshold is equal to 80%, and the operating state of the power supply unit 11 is the startup mode, the power supply unit 11 determines that the power supply state (equal to 450/500=90%) is greater than the At the first safe operation threshold (ie 80%), the bus CR is used to send information to the power supply unit 12 to start common power supply. Similarly, under the same conditions, the amplitude of the voltage of the AC mains AC1 is equal to the second input AC voltage value (that is, 220 volts), and the corresponding rated output power is equal to the second output power value (that is, 1000 watts), If the power supply state is equal to 450/1000=45%, the power supply unit 12 will not be started (operating in the non-starting mode), which avoids that the two power supply units of the prior art are started under this condition. problem.

Furthermore, when the two power supply units 11, 12 operate in the startup mode, one of the power supply units (such as the master control mode) 11 (or 12) calculates another power supply state. The power supply state is equal to the sum of the total load power of each application circuit 22, 32 divided by the sum of the rated output power of the two power supply units 11, 12 operating in the startup mode. When one of the power supply units 11 (or 12) determines that the power supply state is less than a predetermined second safe operation threshold, the other of the power supply units 12 (or 11) is controlled to operate in the inactive mode instead.

For example, when the amplitude of the voltage of the AC mains AC1 is equal to the second input AC voltage value (that is, 220 volts), and the rated output power is equal to the second output power value (that is, 1000 watts), it is assumed that the total load power Is equal to 300 watts, and the second safe operation threshold is equal to 20%, and the operating states of the two power supply units 11, 12 are in the startup mode, then one of the power supply units 11, 12 (such as 11) When it is judged that the power supply state (equal to 300/2000=15%) is less than the second safe operating threshold (ie 20%), the bus CR is used to transmit information to the other of the two power supply units 11, 12 Those (such as 12) are closed. Similarly, under the same conditions, when the voltage amplitude of the AC mains AC1 is equal to the first input AC voltage value (ie 110 volts) and the rated output power is equal to the first output power value (ie 500 watts), the power supply If the state is equal to 300/1000=30%, either of the two power supply units 11 and 12 will not be turned off, while continuing to supply power, it also avoids one of the two power supply units under this condition in the prior art Will be shut down for problems.

In step S17, when one of the substrate management controllers 21, 31 determines that the two power supply units 11, 12 simultaneously output the at least DC voltage Vin1, Vin2, a warning message indicating that the backup function has failed is generated . The warning message can be displayed on a display screen (not shown) through a basic input output system (BIOS) (not shown) to notify the user or system administrator.

Continuing the previous example, each substrate management controller 21, 31 obtains the AC mains AC1 voltage amplitude equal to the first input AC voltage value (ie 110 volts), and assuming that the total power of the load is equal to 800 watts, then each A substrate management controller 21, 31 determines that the two first output power values are both less than the total load power (that is, 500 watts less than 800 watts), and then determines that the two power supply units 11, 12 simultaneously output the DC voltages Vin1 Vin2. At this time, the two power supply units 11 and 12 of the computer system are both operating to output the DC voltages Vin1 and Vin2, and no redundant power supply is available.

In step S18, each substrate management controller 21, 31 determines a load threshold corresponding to each application circuit 22, 32 according to the magnitude of the voltage amplitude of the AC mains AC1. The load threshold is less than a rated total output power, and the magnitude of the load threshold is related to the rated total output power, the rated total output power is equal to one of the two power supply units 11, 12 operating in the start mode The sum of such rated output power.

When one of the board management controllers 21, 31 determines that the total load power of the corresponding application circuits 22, 32 is greater than or equal to the corresponding load threshold, the corresponding board management controller 21, 31 is notified A load reduction command is also generated to the corresponding application circuit 22, 32, so that the total power consumed by the corresponding application circuit 22, 32 of the load becomes smaller

Continuing the previous example, when each power supply unit 11, 12 determines that the voltage amplitude of the AC mains AC1 corresponds to 110 volts, that is, it is substantially equal to 110 volts but its amplitude is not exactly equal to 110 volts. The rated output power of the DC voltages Vin1 and Vin2 are both 500 watts, therefore, the rated total output power of the DC voltages Vin1 and Vin2 is equal to the sum of the two first output power values (that is, the sum of the two rated output powers (Equal to 1000 watts).

Furthermore, each of the substrate management controllers 21, 31 pre-stores two candidate load thresholds, which correspond to the first input AC voltage value and the second input AC voltage value, respectively. When each substrate management controller 21, 31 obtains whether the amplitude of the voltage of the AC mains AC1 is equal to which of the first input AC voltage value and the second input AC voltage value, it is determined that the load threshold value is equal to the corresponding The candidate load threshold.

Following the previous example, the two candidate load thresholds pre-stored by each substrate management controller 21, 31 are 450 watts and 900 watts, corresponding to 110 volts and 220 volts, respectively. The total power of the load of each application circuit 22, 32 is 500 watts. When the amplitude of the voltage of the AC mains AC1 is equal to 110 volts, the total power of the load (that is, 500 watts) is greater than the load threshold (that is, 450 watts), and each substrate management controller 21, 31 generates the load reduction command, The total power of the load of each application circuit 22, 32 is less than or equal to the load threshold. On the contrary, when the amplitude of the voltage of the AC mains AC1 is equal to 220 volts, the total power of the load (that is, 500 watts) is less than the load threshold (that is, 900 watts), and each substrate management controller 21, 31 does not produce the drop Load instructions.

It should be particularly added that in this embodiment, the computer system includes two motherboards 2, 3, two substrate management controllers 21, 31, and two application circuits 22, 32, while in other embodiments, the computer system It may also include only one motherboard, a substrate management controller, and an application circuit, or include multiple motherboards, a plurality of corresponding substrate management controllers, and a plurality of corresponding application circuits, which is not limited thereto. In addition, in other embodiments, the voltage bridge controller 5 can also be omitted. The two substrate management controllers 21 and 31 are electrically connected to the two power supply units 11 and 12 to obtain the voltage amplitude of the AC mains AC1. The first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value, and the total load power of each application circuit 22, 32. That is to say, the main purpose of the voltage bridge controller 5 is to avoid that when the number of the substrate management controllers is large, the number of input and output pins (Pin) of the power supply units 11 and 12 is insufficient.

In summary, by one of the substrate management controllers 21, 31, the output power parameter is determined according to the voltage amplitude of the AC mains AC1, so that each power supply unit 11, 12 is based on the output power The parameter determines the rated output power of the at least DC voltage. One of the power supply units 11, 12 operates in the startup mode, and is also based on the rated output power, the operating state of each power supply unit 11, 12 and the application circuit 22, 32 of the The total power of the load, calculates the power supply state, and correctly controls the other power supply units 11, 12 to operate in one of the start mode and the non-start mode. In addition, each of the board management controllers 21, 31 determines that the two power supply units 11, 12 need to output the DC voltages simultaneously according to the magnitude of the voltage amplitude of the AC mains AC1 received by the two power supply units 11, 12 Vin1 and Vin2 to provide sufficient rated total output power, that is, when the total power of the load of each application circuit 22 and 32 is used, the warning message is generated to notify the manager or user of the computer system. The two power supply units 11 and 12 can no longer provide a backup function, that is to say, the two power supply units 11 and 12 have no redundant power. Furthermore, each of the substrate management controllers 21, 31 determines the load threshold corresponding to the application circuits 22, 32 according to the magnitude of the voltage of the AC mains AC1, so that the load on the application circuits 22, 32 When the total power is greater than or equal to the load threshold, the load reduction command is produced and received, so the purpose of the invention can indeed be achieved.

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.

11‧‧‧Power supply unit 12‧‧‧Power supply unit 2‧‧‧ Motherboard 21‧‧‧ Baseboard management controller 22‧‧‧Application circuit 3‧‧‧ Motherboard 31‧‧‧ Baseboard management controller 32‧‧‧Application circuit 4‧‧‧Electricity distribution board 5‧‧‧ Voltage Bridge Controller AC1‧‧‧AC mains Vin1‧‧‧DC voltage Vin2‧‧‧DC voltage Vout1‧‧‧DC voltage Vout2‧‧‧DC voltage S1‧‧‧Signal S2‧‧‧Signal S3‧‧‧Signal S4‧‧‧Signal CR‧‧‧Bus S11~S18‧‧‧Step

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a block diagram illustrating an embodiment of the computer system of the present invention; and FIG. 2 is a flowchart illustrating The steps of a power management method implemented by the computer system of the present invention.

11‧‧‧Power supply unit

12‧‧‧Power supply unit

2‧‧‧ Motherboard

21‧‧‧ Baseboard management controller

22‧‧‧Application circuit

3‧‧‧ Motherboard

31‧‧‧ Baseboard management controller

32‧‧‧Application circuit

4‧‧‧Electricity distribution board

5‧‧‧ Voltage Bridge Controller

AC1‧‧‧AC mains

Vin1‧‧‧DC voltage

Vin2‧‧‧DC voltage

Vout1‧‧‧DC voltage

Vout2‧‧‧DC voltage

S1‧‧‧Signal

S2‧‧‧Signal

S3‧‧‧Signal

S4‧‧‧Signal

CR‧‧‧Bus

Claims (10)

A computer system includes: N application circuits, each of which receives at least a DC voltage as operating power and consumes a corresponding total load power, N is a positive integer; two power supply units are electrically connected to the N Application circuit, each power supply unit is adapted to receive an AC mains power, and convert and output the at least DC voltage when the operating state is a start mode, and do not output when the operating state is a non-start mode The at least DC voltage, and stores a first input AC voltage value, a second input AC voltage value, a pair of first output power values corresponding to the first input AC voltage value, and a pair of second input AC voltage values The second output power value and determine a rated output power of the at least DC voltage according to an output power parameter; and N substrate management controllers electrically connected to the power supply units, wherein One of them determines that the output power parameter is equal to the first output power value and the second output according to which of the first input AC voltage value and the second input AC voltage value corresponds to the voltage amplitude of the AC mains Corresponding to the power value, and transmitting and storing the output power parameter to each power supply unit, wherein one of the power supply units operates in the startup mode and is also based on the rated output power of each power supply unit , The operating state and the total power of the load of each application circuit, to control the other power supply unit to operate in one of the starting mode and the non-starting mode. The computer system according to claim 1, further comprising a voltage bridge controller electrically connected between the two power supply units and the N substrate management controllers and the N application circuits, wherein each power supply The unit can detect and store the voltage amplitude of the AC mains. The voltage bridge controller receives the at least DC voltage from the two power supply units for output to each application circuit, and detects and stores the voltage The magnitude of the total load power of an application circuit, the voltage bridge controller can also receive an inquiry command to read the first input AC voltage value and the second input AC voltage value stored by each power supply unit , The first output power value, the second output power value, and the voltage amplitude of the AC mains, one of the substrate management controllers generates the query command to obtain the each by the voltage bridge controller The first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value, the magnitude of the voltage amplitude of the AC mains, and each of the The total power of the load of the application circuit. The computer system according to claim 1, wherein when one of the power supply units operates in the startup mode and the other of the power supply units operates in the non-startup mode, the power supply operating in the startup mode The unit calculates a power supply state equal to the sum of the total load power of each application circuit divided by the rated output power of the power supply unit operating in the startup mode, when the power supply operating in the startup mode When the unit determines that the power supply state is greater than a predetermined first safe operation threshold, it controls the other of the power supply units to operate in the startup mode instead. The computer system according to claim 1, wherein, when the two power supply units operate in the startup mode, one of the power supply units calculates a power supply state that is equal to the total power of the load of each application circuit The sum is divided by the sum of the rated output powers of the two power supply units operating in the startup mode, and when one of the power supply units determines that the power supply state is less than a predetermined second safe operating threshold, the other is controlled The power supply unit is operated in the non-starting mode instead. The computer system according to claim 1, wherein each substrate management controller determines a load threshold corresponding to each application circuit according to the voltage amplitude of the AC mains, the load threshold is less than a rated total output Power, and the magnitude of the load threshold is related to the magnitude of the rated total output power, which is equal to the sum of the rated output powers of the two power supply units operating in the startup mode, the N substrates The management controller is also electrically connected to the N application circuits, and when the one of the substrate management controllers determines that the total load power of the corresponding application circuit is greater than or equal to the corresponding load threshold, it notifies the corresponding The baseboard management controller also generates a load reduction instruction to the corresponding application circuit, so that the total power of the load consumed by the corresponding application circuit becomes smaller. A power management method is suitable for a computer system. The computer system includes N application circuits, two power supply units, and N substrate management controllers. N is a positive integer. The power management method includes the following steps: (a) Each application circuit receives at least a DC voltage as operating power and consumes a corresponding total load power; (b) Each power supply unit is adapted to receive an AC mains power and operate in an operating state of Converting and outputting the at least DC voltage during a starting mode, and operating not to output the at least DC voltage when the operating state is a non-starting mode, and storing a first input AC voltage value and a second input AC voltage value , A pair of first output power values corresponding to the first input AC voltage value, and a pair of second output power values corresponding to the second input AC voltage value, and determining a rated output of the at least DC voltage according to an output power parameter Power; (c) by one of the substrate management controllers according to which of the AC mains voltage amplitude corresponds to the first input AC voltage value and the second input AC voltage value to determine the output The power parameter is equal to one of the corresponding values of the first output power value and the second output power value, and the output power parameter is transmitted and stored to each power supply unit; and (d) by one of the power supply units Operate in the startup mode, and also control another power supply unit to operate in the startup mode and the non-operation according to the rated output power of the power supply unit, the operating state, and the total power of the load of each application circuit One of the startup modes. The power management method according to claim 6, the computer system further includes a voltage bridge controller, the power management method further includes steps (e) and (f), wherein, in step (b), each power supply The supply unit can detect and also store the voltage amplitude of the AC mains, and in step (e), the voltage bridging controller receives the at least DC voltage from the two power supply units for output to each Application circuit, and detect and store the total power of the load of each application circuit, in step (f), the voltage bridge controller can also receive an inquiry command to read each power supply unit The stored first input AC voltage value, the second input AC voltage value, the first output power value, the second output power value, and the voltage amplitude of the AC mains, in step (c), the One of the substrate management controllers generates the query command to obtain the first input AC voltage value, the second input AC voltage value, and the first input AC voltage value stored by each power supply unit through the voltage bridge controller An output power value, the second output power value, the magnitude of the voltage amplitude with the AC mains, and the total load power of each application circuit. The power management method according to claim 6, wherein in step (d), when one of the power supply units operates in the startup mode and the other of the power supply units operates in the non-startup mode, the operation The power supply unit in the startup mode calculates a power supply state equal to the sum of the total power of the load of each application circuit divided by the rated output power of the power supply unit operating in the startup mode when operating When the power supply unit in the startup mode determines that the power supply state is greater than a predetermined first safe operation threshold, the other of the power supply units is controlled to operate in the startup mode. The power management method according to claim 6, wherein in step (d), when the two power supply units operate in the startup mode, one of the power supply units calculates a power supply state, and the power supply state is equal to the The sum of the total power of the load of an application circuit divided by the sum of the rated output powers of the two power supply units operating in the startup mode, when one of the power supply units determines that the power supply state is less than a predetermined second safe operation At a critical value, the other of the power supply units is controlled to operate in the non-starting mode. The power management method according to claim 6, further comprising the step (g): The substrate management controller determines a load threshold corresponding to each application circuit according to the magnitude of the voltage amplitude of the AC mains, the The load threshold value is less than a rated total output power, and the magnitude of the load threshold value is related to the size of the rated total output power, the rated total output power is equal to those of the two power supply units operating in the start mode The sum of the output power, and when one of the substrate management controllers determines that the total load power of the corresponding application circuit is greater than or equal to the corresponding load threshold, notify the corresponding substrate management controller to also generate a The load reduction instruction is sent to the corresponding application circuit, so that the total power of the load consumed by the corresponding application circuit becomes smaller.

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