CN118112452A

CN118112452A - Power supply current sharing detection method and computing equipment

Info

Publication number: CN118112452A
Application number: CN202311870412.6A
Authority: CN
Inventors: 蔡兵
Original assignee: XFusion Digital Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2023-12-29
Filing date: 2023-12-29
Publication date: 2024-05-31

Abstract

The embodiment of the application provides a power supply current sharing detection method and computing equipment, wherein the method comprises the following steps: obtaining output currents of a plurality of PSUs according to a preset time interval, and determining average output currents according to the output currents of the PSUs; determining the current sharing deviation degree of each PSU according to the average output current and the output current of each PSU; determining whether the plurality of PSUs are in a heavy load mode; if the PSUs are in the heavy-load mode, determining a target PSU with the current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the PSUs, and outputting non-current sharing alarm information of the target PSU, so that a power supply unit with abnormal current sharing state can be identified efficiently and accurately, and the reliability of a power supply system is improved.

Description

Power supply current sharing detection method and computing equipment

Technical Field

The present application relates to the field of electronic technologies, and in particular, to a power supply current sharing detection method and a computing device.

Background

With rapid development of digital economy, computing devices such as servers serve as core information processing units of data centers, and become main power consumption devices of the data centers. With the increase of the overall power consumption of the computing device, in order to ensure the power supply reliability, it is common practice in industry to use a plurality of power supply units (power supply unit, PSUs) of a power supply system to supply power to the computing device in parallel, where the plurality of PSUs share the load of the computing device, so that monitoring of the working state of the PSUs is particularly important.

The current monitoring mode mainly monitors the overcurrent of the PSU in the working process, namely judges whether the output current of the PSU reaches an overcurrent protection point, and reports alarm information on a power supply system if the output current reaches the overcurrent protection point; if the overcurrent protection point is not reached, the power supply system does not report the alarm information. However, some potential safety hazards of the power supply system cannot be identified by the monitoring mode, for example, when one PSU triggers over-current protection, other PSUs are likely to trigger over-current protection in a short time, and the risk of system power-down occurs. Therefore, how to improve the reliability of the power supply system is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a power supply current sharing detection method and computing equipment, which can efficiently and accurately identify a power supply unit with abnormal current sharing state and are beneficial to improving the reliability of a power supply system.

In one aspect, the embodiment of the application provides a power supply current sharing detection method which is applied to computing equipment; the computing device comprises a plurality of power supply units PSU; the plurality of PSUs are to power a computing device; the method comprises the following steps:

and obtaining the output currents of the PSUs according to preset time intervals, and determining average output currents according to the output currents of the PSUs.

And determining the current sharing deviation degree of each PSU according to the average output current and the output current of each PSU.

It is determined whether the plurality of PSUs are in a heavy load mode.

If the PSUs are in the heavy-load mode, determining a target PSU with the current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the PSUs, and outputting non-current sharing alarm information of the target PSU.

According to the embodiment, the power supply unit with abnormal current sharing state can be identified efficiently and accurately by acquiring the current sharing deviation degree of the power supply unit, and the alarm information is sent out timely, so that the power supply unit with the possible overcurrent risk can be found in advance particularly under the condition that the power supply system is in a heavy-load mode, the power supply risk of the power supply system is effectively reduced, and the reliability of the power supply system is improved.

In one implementation, determining whether the plurality of PSUs are in a heavy load mode includes:

The rated output current of the PSU is obtained.

The load ratio is determined based on the output current of the plurality of PSUs, the rated output current, and the number of PSUs.

If the load proportion is greater than or equal to the preset proportion threshold value, determining that the PSUs are in the heavy load mode, and accurately judging whether the PSUs are in the heavy load mode or not according to the output current, the rated output current, the quantity and other multidimensional data of the PSUs.

In one implementation, determining the load ratio based on the output current of the plurality of PSUs, the rated output current, and the number of PSUs includes:

the total output current is determined from the output currents of the plurality of PSUs.

The total rated output current is determined based on the rated output current and the number of PSUs.

The ratio of the total output current to the total rated output current is calculated to obtain the load proportion, and the load proportion can be accurately calculated to indicate the proportion of the current load size to the total output capacity, so that the method is beneficial to accurately judging whether the PSUs are in the heavy load mode.

In an implementation, the number of PSUs is two, and the computing device further includes a current sharing bus; the two PSUs are electrically connected to the current sharing bus bar.

After outputting the non-current sharing alarm information of the target PSU, the method further comprises:

Sending a voltage regulating instruction to the first PSU, wherein the voltage regulating instruction is used for indicating the first PSU to increase the output voltage according to a preset regulating step length until the output current of the second PSU is reduced to a preset current value; wherein the first PSU is any one of the two PSUs, and the second PSU is a PSU other than the first PSU of the two PSUs.

Obtaining response data, wherein the response data comprises one or more of bus voltage change data of a current sharing bus, current sharing conversion coefficients of a first PSU and output voltage change data of a second PSU; the current sharing conversion coefficient refers to a proportionality coefficient for converting the output current of the PSU into the voltage input to the current sharing bus.

According to response data, determining a fault PSU from the two PSUs, outputting fault indication information of the fault PSU, and in a scene of using the two PSUs to supply power to the computing equipment, positioning of the fault PSU can be automatically and accurately realized, so that reliability of a power supply system and management and maintenance efficiency are further improved.

In one implementation, determining a failed PSU from two PSUs based on response data includes:

and determining whether the first PSU is a fault PSU according to the bus voltage change data of the current-sharing bus or the bus voltage change data of the current-sharing bus and the current-sharing conversion coefficient of the first PSU.

If not, determining whether the second PSU is a fault PSU according to the output voltage change data of the second PSU, so that whether the first PSU and the second PSU are faulty or not can be accurately determined.

In an implementation, determining whether the first PSU is a faulty PSU according to bus voltage change data of the current sharing bus includes:

if the bus voltage change data of the current-sharing bus indicates that the bus voltage of the current-sharing bus is not changed, determining that the first PSU is a fault PSU, and accordingly accurately judging whether the first PSU is faulty or not by utilizing the bus voltage change data of the current-sharing bus.

In an implementation manner, determining whether the first PSU is a fault PSU according to bus voltage change data of the current sharing bus and a current sharing conversion coefficient of the first PSU includes:

if the bus voltage change data of the current-sharing bus indicates that the bus voltage of the current-sharing bus is changed, comparing the current-sharing conversion coefficient of the first PSU with a preset current-sharing conversion coefficient.

If the current sharing conversion coefficient of the first PSU is not matched with the preset current sharing conversion coefficient, determining that the first PSU is a fault PSU, and accordingly accurately judging whether the first PSU is faulty or not by utilizing bus voltage change data of the current sharing bus and the current sharing conversion coefficient of the first PSU.

In one implementation, determining whether the second PSU is a faulty PSU according to the output voltage variation data of the second PSU includes:

If the output voltage variation data of the second PSU indicates that the output voltage of the second PSU does not rise, the second PSU is determined to be a faulty PSU, so that whether the second PSU is faulty or not can be accurately determined by using the output voltage variation data of the second PSU.

In one implementation, the response data includes a current sharing conversion coefficient of the first PSU; obtaining response data, including:

and obtaining the bus voltage of the current-sharing bus, the output current of the first PSU, the current-sharing resistor of the first PSU and the current-sharing resistor of the second PSU.

And calculating the current sharing conversion coefficient of the first PSU according to the bus voltage of the current sharing bus, the output current of the first PSU, the current sharing resistor of the first PSU and the current sharing resistor of the second PSU, so that the current sharing conversion coefficient of the first PSU can be accurately obtained.

On the other hand, the embodiment of the application provides a power supply current sharing detection device which is applied to computing equipment; the computing device comprises a plurality of power supply units PSU; the plurality of PSUs are to power a computing device; the device comprises:

And the acquisition unit is used for acquiring the output currents of the PSUs according to a preset time interval.

A determining unit for determining an average output current from the output currents of the plurality of PSUs.

And the determining unit is also used for determining the current sharing deviation degree of each PSU according to the average output current and the output current of each PSU.

And the determining unit is also used for determining whether the PSUs are in a heavy-load mode.

And the determining unit is further used for determining a target PSU with the current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the PSUs if the PSUs are in the heavy-load mode.

And the output unit is used for outputting the non-current-sharing alarm information of the target PSU.

In yet another aspect, an embodiment of the present application provides a computing device, including a baseboard management controller BMC, a plurality of power supply units PSU, and a memory; the BMC is electrically connected with the PSUs and the memory respectively; the plurality of PSUs are used to power a computing device.

The memory is used to store computer program instructions.

The BMC is used for calling program instructions to enable the computing device to execute any one of the power supply current sharing detection method steps.

In the embodiment of the application, the computing device is electrically connected with a plurality of power supply units PSU, the PSUs are used for supplying power to the computing device, the computing device obtains the output currents of the PSUs according to a preset time interval, and the average output current is determined according to the output currents of the PSUs. The computing device then determines a current sharing deviation for each PSU based on the average output current and the output current of each PSU. The computing equipment determines whether the PSUs are in a heavy-load mode, if the PSUs are in the heavy-load mode, namely the load of the power supply system is large, the computing equipment determines a target PSU with the current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the PSUs and outputs non-current sharing alarm information of the target PSU, the power supply unit with abnormal current sharing state can be efficiently and accurately identified by acquiring the current sharing deviation degree of the power supply unit, and alarm information can be timely sent out, particularly in the case that the power supply system is in the heavy-load mode, the power supply unit with the possible overcurrent risk can be found in advance, the power supply system power-down risk is effectively reduced, and therefore the reliability of the power supply system is improved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a computing device according to an embodiment of the present application;

Fig. 2 is a schematic flow chart of a power supply current sharing detection method according to an embodiment of the present application;

fig. 3 is a flow chart of another power supply current sharing detection method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another computing device provided by an embodiment of the present application;

Fig. 5 is a flow chart of another power supply current sharing detection method according to an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a power supply current sharing detection device according to an embodiment of the present application.

Detailed Description

In order to better understand the technical solutions provided by the embodiments of the present application, the following describes related embodiments of the present application.

Referring to fig. 1, a schematic structural diagram of a computing device according to an embodiment of the present application may include: a baseboard management controller (baseboard management controller, BMC) 11, a plurality of power supply units 12 (PSU 1, PSU 2, … …, PSU n), and a load 13, the plurality of power supply units 12 constituting a power supply system of a computing device.

The power supply units 12 are electrically connected to the loads 13, and are used for supplying power (Iout 1, iout2, … …, iout n) to the computing devices. The power supply units 12 are electrically connected to the BMC 11 through communication buses, and the power supply units 12 communicate with the BMC 11 through the communication buses, for example, report their own operating state information to the BMC 11, where the operating state information may include an output voltage, an output current, and the like.

The power supply units 12 are respectively and electrically connected with the current sharing bus, and each power supply unit 12 adjusts its own output current according to the bus voltage of the current sharing bus, so that the output currents of the power supply units 12 are equal, and current sharing among the power supply units is realized.

In some implementations, the communication bus may employ a two-wire serial bus (inter-INTEGRATED CIRCUIT, I2C) communication protocol.

By way of example, the computing devices may be separate physical servers, e.g., functionally partitioned, which may be general purpose servers, graphics processor (graphics processing unit, GPU) servers, or the like. The physical server can be a machine server or a whole cabinet server from morphological division. The load may be a processor, memory, network card, hard drive, or the like. The embodiment of the application does not limit the types of the server and the load.

Referring to fig. 2, a flow chart of a power supply current sharing detection method provided by the embodiment of the application based on the computing device shown in fig. 1 is shown, and the power supply current sharing detection method is applied to the computing device, and specifically can be executed by a baseboard management controller BMC of the computing device, and specifically can include the following steps:

201. And obtaining the output currents of the PSUs according to preset time intervals, and determining average output currents according to the output currents of the PSUs.

The preset time interval may be 1 second(s), or may be set to other values according to needs, which is not limited in the embodiment of the present application.

Specifically, for a plurality of PSUs that supply power to a computing device, each PSU may report its own output current to a baseboard management controller BMC of the computing device through a communication bus at preset time intervals, or the BMC may send a current acquisition instruction to each PSU through the communication bus at preset time intervals, and each PSU may report its own output current to the BMC through the communication bus in response to the current acquisition instruction. After the BMC obtains the output currents of the PSUs, the BMC calculates the average output currents of the PSUs according to the output currents of the PSUs.

In some implementations, the BMC may sum the output currents of the plurality of PSUs to obtain a total output current, and then calculate a first ratio between the total output current and the number of the plurality of PSUs, the first ratio being the average output current of the plurality of PSUs.

In some implementations, to perform current sharing detection, before obtaining the output currents of the PSUs, the BMC may obtain attribute parameters and working modes of the PSUs, where the attribute parameters may include identification information and power parameters, the identification information may include a brand, a model, and the like, and the power parameters may be rated power. According to the attribute parameters, whether the PSUs are mixed or not can be determined, wherein mixed insertion means that PSUs with different brands, models and power parameters are connected in parallel to supply power for the computing equipment. If the attribute parameters of the PSUs are the same, and the working mode of the PSUs is a load balancing mode, wherein the load balancing mode refers to that the PSUs bear the load of the computing device according to the same proportion, the BMC obtains the output currents of the PSUs, that is, under the condition that the attribute parameters of the PSUs currently supplying power to the computing device are consistent (i.e. mixed insertion does not exist), and in the load balancing mode, the BMC can obtain the output currents of the PSUs for current sharing detection, so that the effectiveness and accuracy of current sharing control can be improved.

202. And determining the current sharing deviation degree of each PSU according to the average output current and the output current of each PSU.

The current sharing deviation degree can also be called current sharing unbalance degree, and can be used for evaluating current sharing performance of the PSU.

Specifically, the BMC may calculate a deviation between the output current of each PSU and the average output current, and determine a current sharing deviation degree of each PSU according to the deviation. For example, the BMC calculates a difference between the output current of each PSU and the average output current, and calculates a second ratio between the difference and the average output current, and uses the second ratio as the current sharing deviation of the PSU.

It will be appreciated that, since the difference between the output current and the average output current may be positive or negative, to ensure that the degree of deviation between the current sharing is positive, the difference between the output current and the average output current may be taken as an absolute value, and then the ratio of the absolute value of the difference to the average output current may be calculated.

203. It is determined whether the plurality of PSUs are in a heavy load mode.

The overload mode may refer to a state in which a total load of a power supply system including the plurality of PSUs reaches a preset load threshold.

Specifically, in the heavy load mode, the total output current of the power supply system is higher, and the maximum output capacity of a single PSU is likely to be exceeded, at this time, if the current sharing deviation degree of a certain PSU is too high, this means that the PSU or other PSUs need to bear most of the load, and when the borne load exceeds the maximum output capacity of the single PSU, the overload protection is triggered, so that the residual PSU may trigger the overload protection. To avoid this, the BMC may detect the operating state of the plurality of PSUs and determine whether the plurality of PSUs are in a heavy load mode.

In some implementations, the specific way in which the BMC determines whether the power supply system is in the heavy load mode may be:

The BMC obtains rated output currents of the PSUs, and determines a load proportion according to the output currents of the PSUs, the rated output currents and the number of the PSUs. And if the load proportion is greater than or equal to a preset proportion threshold value, determining that the power supply system is in a heavy load mode.

Specifically, the BMC may obtain the rated output power and the rated output voltage of the PSU, and determine the rated output current of the PSU according to the rated output power and the rated output voltage, for example, when the ratio of the rated output power to the rated output voltage is taken as the rated output current, the rated output currents of the PSUs are the same when the attribute parameters of the PSUs are identical. The BMC may then determine a total output current from the output currents of the plurality of PSUs, the total output current reflecting the current load size, and determine a total rated output current from the rated output current and the number of the plurality of PSUs, the total rated output current reflecting the total output capacity of the power supply system. The BMC calculates the ratio of the total output current to the total rated output current to obtain the load ratio, i.e. the ratio of the current load size to the total output capacity. If the load proportion is greater than or equal to the preset proportion threshold, the BMC determines that the power supply system is in the heavy load mode, and whether the power supply system is in the heavy load mode currently can be accurately judged by calculating the load proportion. The preset ratio threshold may be 50%, or other values may be used for the preset ratio threshold.

204. If the PSUs are in the heavy-load mode, determining a target PSU with the current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the PSUs, and outputting non-current sharing alarm information of the target PSU.

Specifically, if the PSUs are in the heavy load mode, the BMC may compare the current sharing deviation degree of each PSU with a preset deviation degree threshold, and if a target PSU with the current sharing deviation degree greater than or equal to the preset deviation degree threshold exists, output non-current sharing alarm information of the target PSU, so as to timely alarm the PSU with greater current sharing deviation. In addition, whether a new PSU needs to be replaced or whether a standby PSU is started or whether on-site overhaul and other operations are performed can be confirmed for the target PSU with alarm, so that hidden danger is eliminated as early as possible, and the condition that power down of a system is caused by PSU overcurrent protection is avoided.

In addition, if the PSUs are not in the heavy load mode, the present flow is ended.

In some implementations, the preset deviation threshold may be a small value, for example, the preset deviation threshold is less than or equal to a preset ratio, which may be 5%, that is, the preset deviation threshold may be set to be less than or equal to 5%. The embodiment of the application sets the preset deviation threshold value to a smaller value, so that the corresponding PSU can be detected when the power supply system is slightly uneven, and the condition of PSU overcurrent protection can be effectively avoided.

In some possible embodiments, after outputting the non-current-sharing alarm information of the target PSU, if in a subsequent detection process, for example, the current-sharing deviation degree of the target PSU determined in a next time interval is smaller than a preset deviation degree threshold, the BMC may clear the non-current-sharing alarm information of the target PSU, that is, after the current-sharing deviation degree of the target PSU is recovered to be normal, the BMC may release the alarm to the target PSU.

In the embodiment of the application, a baseboard management controller BMC of the computing device is electrically connected with a plurality of power supply units PSUs of a power supply system, and the BMC acquires the output currents of the PSUs according to a preset time interval and determines average output currents according to the output currents of the PSUs. The BMC then determines the current sharing deviation of each PSU based on the average output current and the output current of each PSU. The BMC determines whether the PSUs are in a heavy-load mode, if the PSUs are in the heavy-load mode, namely the load of the power supply system is large, the BMC determines target PSUs with current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the PSUs and outputs non-current sharing alarm information of the target PSUs, can efficiently and accurately identify the power supply unit with abnormal current sharing state by acquiring the current sharing deviation degree of the power supply unit, and timely sends out the alarm information, particularly, under the condition that the power supply system is in the heavy-load mode, the power supply unit possibly having overcurrent risk can be found in advance, and the power supply system power-down risk is effectively reduced, so that the reliability of the power supply system is improved.

Referring to fig. 3, a flowchart of another power supply current sharing detection method provided by the computing device shown in fig. 1 according to an embodiment of the present application is shown, where the power supply current sharing detection method may be applied to the computing device, and specifically executed by a baseboard management controller BMC of the computing device, and may specifically include the following steps:

301. judging whether the power supplies are mixed and plugged or not and whether the rated power is inconsistent or not.

The power supply may be referred to as the power supply unit PSU described above.

302. If the mixed insertion is not carried out and the rated power is consistent, judging whether the power supply is in a load balancing mode or not; if mixed insertion exists or rated power is inconsistent, ending the flow.

303. If the power supply is in the load balancing mode, the power supply data in the load balancing mode is included into statistics after the first time delay; if the load balancing mode is not in, ending the flow.

In this case, due to actions such as power supply plugging and unplugging, main/standby switching, etc., the power supply newly enters a load balancing mode, and a certain time (for example, 5 s) is required to delay, and the working state of the power supply is waited for to be stable.

304. The number of power supplies n, the rated output power Pe and the rated output voltage Ve are inquired.

305. Power supply rated output current ie=pe/Ve is calculated.

306. And inquiring the output current of each power supply, and filtering the current value by taking an average value of 5 times to obtain I1, I2, … … and In.

Wherein, in order to improve the accuracy of the current detection, for each power supply, an output current may be obtained a certain number of times (for example, 5 times), and the obtained 5 times of currents are averaged to obtain a current I1 of PSU 1, a current I2 of PSU 2, … …, a current In of PSU n,

307. The power supply system average output current iavg= (i1+i2+ … … +in)/n is calculated.

308. And calculating the current sharing deviation degree of each power supply, wherein the current sharing deviation degree of In is = (In-Iavg)/Iavg.

309. It is determined whether the total load current (i1+i2+ … … +in) exceeds a set percentage of the total rated output capability (n×ie).

310. If yes, judging whether the current sharing deviation degree of each power supply is smaller than a set threshold value; if not, ending the flow. Illustratively, the set percentage may be 50%. The set threshold may be 5%. If the total load current (i1+i2+ … … +in) exceeds 50% of the total rated output capacity (n×ie), the power supply system is In the heavy-load mode, and In order to prevent the overcurrent protection of the single power supply, current sharing detection is needed, that is, whether the current sharing deviation degree of each power supply is less than 5% is judged.

311. If the current sharing deviation degree is smaller than the set threshold value, clearing the non-current sharing alarm information of the corresponding power supply; if the current sharing deviation reaches the set threshold, step 312 is performed.

312. And sending out non-current equalizing alarm information of the corresponding power supply.

In some implementations, in order to improve accuracy of current sharing detection, detection results within a period of time may be used to comprehensively determine whether non-current sharing alarm information of the power supply needs to be sent. For example, if the preset time interval of current detection is 1s, the non-current-sharing determination result in 10s can be obtained, and if 7 times or more than 7 times of current-sharing deviation degree is detected in 10s to be greater than or equal to 5% for a certain power supply, non-current-sharing alarm information for the power supply is sent. Similarly, when judging whether the non-current-sharing alarm information of the power supply can be cleared, the non-current-sharing judgment result in the next 10s can be obtained, and if the current-sharing deviation degree is detected to be less than 5% continuously for 4 times in the 10s, the non-current-sharing alarm information of the power supply is cleared.

It should be noted that, specific values of 5s, 5 times, 50%, 5%, 1s, 10s, 7 times, 4 times and the like are only examples, and may be flexibly adjusted according to the needs, and the embodiment of the present application is not limited.

Referring to fig. 4, a schematic structural diagram of another computing device according to an embodiment of the present application includes two power supply units 12 (PSU 1 and PSU 2).

Wherein the two power supply units 12 are used to power the load of the computing device. The two power supply units 12 are electrically connected to the baseboard management controller BMC 11 of the computing device through communication buses, respectively, and the two power supply units 12 communicate with the BMC 11 using the communication buses. The two power supply units 12 are respectively and electrically connected with the current sharing bus bar through the corresponding current sharing resistors, the PSU 1 is electrically connected with the current sharing bus bar through the current sharing resistor R1, and the PSU 2 is electrically connected with the current sharing bus bar through the current sharing resistor R2.

Each of the power supply units 12 may specifically include a power conversion unit 1201, a control unit 1202, a current sharing signal detection unit 1203, and a current sharing signal conversion unit 1204.

Specifically, the power conversion unit 1201 is configured to convert an input voltage into a supply voltage.

The control unit 1202 is configured to report, to the BMC 11 via the communication bus, attribute parameters, working state information, and the like of the PSU where the PSU is located, where the attribute parameters may include an identifier (for example, a brand, a model), a power parameter, and the like of the PSU. The control unit 1202 is further configured to report, to the BMC 11, working state information of the PSU where the PSU is located by using a communication bus, where the working state information may include an output voltage, an output current, and the like.

The control unit 1202 is further configured to receive a control instruction issued by the BMC 11 through the communication bus. The control instructions may include voltage adjustment instructions, and the control unit 1202 may control the output voltage of the power conversion unit 1201.

The control unit 1202 is further configured to feed back an output current of the power conversion unit 1201 of the PSU to the current sharing signal conversion unit 1204.

The current sharing signal conversion unit 1204 is configured to convert the output current fed back by the control unit 1202 into a current sharing voltage, and input the current sharing voltage to the current sharing bus through the current sharing resistor of the PSU.

Specifically, the current sharing signal conversion unit 1204 of PSU 1 converts the output current of the power conversion unit 1201 of PSU 1 into a current sharing voltage V1, and inputs the current sharing voltage to the current sharing bus through the current sharing resistor R1, the current sharing signal conversion unit 1204 of PSU 2 converts the output current of the power conversion unit 1201 of PSU 2 into a current sharing voltage V2, and inputs the current sharing voltage to the current sharing bus through the current sharing resistor R2, and the current sharing voltages (V1, V2) of the PSUs form a bus voltage (Vbus) on the current sharing bus.

The current-sharing signal detection unit 1203 is configured to convert a bus voltage of the current-sharing bus into a current-sharing current, and feed back the current-sharing current to the control unit 1202.

The control unit 1202 is further configured to adjust an output voltage of the power conversion unit 1201 according to a difference between the current sharing current and an output current of the power conversion unit 1201, so as to adjust the output current, and achieve current sharing among PSUs.

Referring to fig. 5, a flowchart of another power supply current sharing detection method provided by the computing device shown in fig. 4 according to an embodiment of the present application is shown, where the power supply current sharing detection method may be applied to the computing device, specifically, the baseboard management controller BMC of the computing device may specifically include the following steps:

501. and obtaining the output currents of the two PSUs according to a preset time interval, and determining the average output current according to the output currents of the two PSUs.

502. And determining the current sharing deviation degree of each PSU according to the average output current and the output current of each PSU.

503. It is determined whether both PSUs are in the heavy load mode.

504. If the two PSUs are in the heavy-load mode, determining a target PSU with the current sharing deviation degree larger than or equal to a preset deviation degree threshold value in the two PSUs, and outputting non-current sharing alarm information of the target PSU.

In addition, if the two PSUs are not in the heavy load mode, the present flow is ended.

It should be noted that, the specific implementation manner of the steps 501 to 504 may refer to the descriptions related to the steps 201 to 204 in the foregoing embodiments, which are not repeated herein.

In the embodiment of the application, since the power supply system comprises two PSUs, when the current sharing deviation degree of one PSU is greater than or equal to the preset deviation degree threshold value, the current sharing deviation degree of the other PSU is also greater than or equal to the preset deviation degree threshold value, and at the moment, it cannot be determined which PSU has a fault, so that the fault PSU needs to be accurately positioned.

505. And sending a voltage regulating instruction to the first PSU, wherein the voltage regulating instruction is used for instructing the first PSU to increase the output voltage according to a preset regulating step length until the output current of the second PSU is reduced to a preset current value.

Wherein the first PSU is any one of the two PSUs and the second PSU is a PSU of the two PSUs other than the first PSU. For example, the first PSU may be PSU 1 of fig. 4 and the second PSU may be PSU 2 of fig. 4.

In particular, to locate a failed PSU, the BMC may send a voltage regulation command to either one of the two PSUs (e.g., the first PSU) using the communication bus. The voltage regulating instruction is used for indicating the first PSU to increase the output voltage according to a preset regulating step length until the output current of the second PSU is reduced to a preset current value.

In some possible embodiments, the control unit 1202 of the first PSU may respond to the voltage regulation command and control the power conversion unit 1201 of the first PSU to increase the output voltage according to the preset regulation step, and during the regulation, the control unit 1202 of the first PSU may acquire the output current of the second PSU from the BMC through the communication bus each time, and if the output current of the second PSU is greater than the preset current value, the control unit 1202 of the first PSU controls the power conversion unit 1201 of the first PSU to continue to increase the output voltage according to the preset regulation step until the output current of the second PSU decreases to the preset current value. The preset current value may be a small value, for example, the preset current value is 0.

506. And acquiring response data, wherein the response data comprises one or more of bus voltage change data of a current sharing bus, current sharing conversion coefficients of the first PSU and output voltage change data of the second PSU.

As can be seen from fig. 4, the current sharing voltage v1=k1×i1 of PSU 1, the current sharing voltage v2=k2×i2 of PSU 2, I1 is the output current of PSU 1, I2 is the output current of PSU 2, K1 is the preset current sharing conversion coefficient of the current sharing signal conversion unit 1204 of PSU 1, K2 is the preset current sharing conversion coefficient of the current sharing signal conversion unit 1204 of PSU 2, and k1=k2=k if the attribute parameters of PSU 1 and PSU 2 are the same. K is a preset current sharing conversion coefficient of PSU with the same attribute parameters. The current sharing conversion coefficient is a proportionality coefficient for converting the output current of the PSU into the voltage input to the current sharing bus; for the first PSU, the current sharing conversion coefficient refers to a proportionality coefficient for converting the output current of the first PSU into the voltage input to the current sharing bus; for the second PSU, the current sharing conversion coefficient refers to a proportionality coefficient that converts the output current of the second PSU into a voltage input to the current sharing bus.

Assuming that V1> V2, the bus voltage vbus=r2 is (V1-V2)/(r1+r2) +v2, i.e.:

Vbus＝R2*(K1*I1-K2*I2)/(R1+R2)+K2*I2。

In general, taking r1=r2, vbus can be further expressed as:

vbus=0.5 (k1×i1-k2×i2) +k2×i2. Specifically, when the preset current value is 0, i.e., i2=0, vbus=0.5×k1×i1.

Specifically, as the first PSU increases the output voltage, the bus voltage Vbus changes. After the bus voltage Vbus changes, the current sharing current obtained by the conversion of the second PSU by the current sharing signal detecting unit 1203 changes, and then the output voltage of the second PSU changes. In addition, when the preset current value is taken to be 0, vbus=0.5×k1×i1, since the bus voltage Vbus and the output current I1 of the first PSU are known, the current sharing conversion coefficient (i.e. the actual current sharing conversion coefficient) of the current sharing signal conversion unit 1204 of the first PSU can be calculated. Therefore, in the process that the first PSU increases the output voltage according to the preset adjustment step length, the BMC can acquire response data of the power supply system, wherein the response data comprises one or more of bus voltage change data of a current sharing bus, current sharing conversion coefficients of the first PSU and output voltage change data of the second PSU, and the response data can reflect the working state of the first PSU or the second PSU.

The bus voltage of the current sharing bus can be reported to the BMC by the first PSU or the second PSU through the communication bus, the output current of the first PSU can be reported to the BMC by the first PSU through the communication bus, the output voltage of the second PSU can be reported to the BMC by the second PSU through the communication bus, and the BMC can obtain the response data according to the reported bus voltage of the current sharing bus, the output current of the first PSU and the output voltage of the second PSU.

507. And determining a fault PSU from the two PSUs according to the response data, and outputting fault indication information of the fault PSU.

Specifically, since the response data may reflect the working state of the first PSU or the second PSU (whether a fault occurs), the BMC may determine which of the two PSUs is the faulty PSU according to the response data, and output fault indication information of the faulty PSU, where the fault indication information may be used to indicate to replace a new PSU or perform a primary-standby switching operation, and the primary-standby switching operation may be that the BMC sends a start instruction to a standby PSU of the faulty PSU, and the standby PSU starts to supply power to the computing device after being started.

In some implementations, the bus voltage change data of the current sharing bus may be used to determine whether the first PSU is faulty, the bus voltage change data of the current sharing bus and the current sharing conversion coefficient of the first PSU may also be used to determine whether the first PSU is faulty, and the output voltage change data of the second PSU may be used to determine whether the second PSU is faulty. Specifically, the BMC may determine whether the first PSU is a faulty PSU according to the bus voltage change data of the current sharing bus, or the bus voltage change data of the current sharing bus and the current sharing conversion coefficient of the first PSU. If the first PSU has no fault, the BMC may determine whether the second PSU is a faulty PSU according to the output voltage variation data of the second PSU, so that the faulty PSU may be accurately found out from the two PSUs.

In some implementations, the specific manner in which the BMC determines whether the first PSU is a failed PSU may be:

if the output current of the first PSU increases, the bus voltage change data of the current sharing bus indicates that the bus voltage of the current sharing bus is not changed, the BMC may determine that the current sharing signal conversion unit 1204 or the current sharing resistor R1 of the first PSU fails, and the current sharing signal conversion unit 1204 or the current sharing resistor R1 of the first PSU fails.

If the bus voltage change data of the current sharing bus indicates that the bus voltage of the current sharing bus changes, that is, the bus voltage Vbus of the current sharing bus increases along with the increase of the output current of the first PSU, the current sharing conversion coefficient of the first PSU is compared with the preset current sharing conversion coefficient K, if the current sharing conversion coefficient of the first PSU is not matched with the preset current sharing conversion coefficient, the mismatch may refer to the mismatch being unequal, or the deviation degree of the current sharing conversion coefficient compared with the preset current sharing conversion coefficient reaches a preset deviation degree threshold (for example, 2%), the BMC may determine that the current sharing signal conversion unit 1204 of the first PSU is faulty, that is, the first PSU is faulty.

And if the bus voltage change data of the current-sharing bus indicates that the bus voltage of the current-sharing bus is changed, and the current-sharing conversion coefficient of the first PSU is matched with the preset current-sharing conversion coefficient, the BMC determines that the first PSU is not faulty, namely the first PSU is not faulty.

In some implementations, the specific manner in which the BMC determines whether the second PSU is a failed PSU may be:

If the output voltage change data of the second PSU indicates that the output voltage of the second PSU is not rising, the second PSU is determined to be a failed PSU. Since the bus voltage of the current sharing bus increases, if the current sharing signal detecting unit 1203 of the second PSU has no fault, the current sharing current obtained by converting the bus voltage of the current sharing bus by the current sharing signal detecting unit 1203 of the second PSU will also increase, and after the current sharing current is fed back to the control unit 1202 of the second PSU, the control unit 1202 of the second PSU will control the power conversion unit 1201 of the second PSU to increase the output voltage, so if the output voltage change data of the second PSU indicates that the output voltage of the second PSU has not increased, the BMC may determine that the current sharing signal detecting unit 1203 of the second PSU has a fault, that is, the second PSU has a fault.

In some possible embodiments, the current sharing conversion coefficient of the PSU may be obtained by:

Taking the first PSU as an example, the BMC obtains a bus voltage (Vbus) of the current-sharing bus, an output current (I1) of the first PSU, a current-sharing resistor of the first PSU and a current-sharing resistor of the second PSU, and calculates a current-sharing conversion coefficient (K1) of the first PSU according to the bus voltage of the current-sharing bus, the output current of the first PSU, the current-sharing resistor of the first PSU and the current-sharing resistor of the second PSU. When the current sharing resistance of the first PSU is equal to that of the second PSU, vbus=0.5×k1×i1, and given Vbus, I1, the current sharing conversion coefficient k1=2×vbus/I1 of the first PSU can be calculated.

It should be noted that, in the same manner as the first PSU, the BMC may send a voltage regulation command to the second PSU to execute the flow of steps 505 to 507, so as to accurately and efficiently locate the faulty PSU.

In the embodiment of the present application, a baseboard management controller BMC of a computing device is electrically connected to a plurality of power supply units PSU of a power supply system, and the BMC obtains output currents of the PSU according to a preset time interval and determines an average output current according to the output currents of the PSU. The BMC then determines the current sharing deviation of each PSU based on the average output current and the output current of each PSU. If the PSUs are in a heavy-load mode, namely the load of the power supply system is large, the BMC determines target PSUs with current sharing deviation degrees larger than or equal to a preset deviation degree threshold value in the PSUs, outputs non-current sharing alarm information of the target PSUs, can efficiently and accurately identify the power supply unit with abnormal current sharing state by acquiring the current sharing deviation degrees of the power supply units, and timely sends out the alarm information, particularly, under the condition that the power supply system is in the heavy-load mode, the power supply unit with the possibility of overcurrent risk can be found in advance, the power-down risk of the power supply system is effectively reduced, and the reliability of the power supply system is improved.

And when the two PSUs supply power to the computing equipment, if the non-current-sharing alarm information of the target PSU is output, the BMC can send a voltage regulating instruction to the first PSU in the target PSU, and the first PSU increases the output voltage according to a preset regulating step length until the output current of the second PSU is reduced to a preset current value. The BMC acquires response data, wherein the response data comprises one or more of bus voltage change data of a current-sharing bus, current-sharing conversion coefficient of a first PSU and output voltage change data of a second PSU, then determines a fault PSU from the two PSUs according to the response data, and outputs fault indication information of the fault PSU, so that the fault PSU can be automatically and accurately positioned, and the reliability of a power supply system and the management and maintenance efficiency are further improved.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a power supply current sharing detection device according to an embodiment of the present application. The power supply current sharing detection device can be applied to the BMC of the computing equipment in the embodiment; the computing device comprises a plurality of power supply units PSU; the plurality of PSUs are used to power a computing device. In particular, the power supply current sharing detection apparatus may be a computer program (including program instructions) running in a BMC of a computing device. This power flow equalizing detection device specifically can include:

an obtaining unit 601 is configured to obtain output currents of the PSUs at preset time intervals.

A determining unit 602 for determining an average output current from the output currents of the plurality of PSUs.

The determining unit 602 is further configured to determine a current sharing deviation degree of each PSU according to the average output current and the output current of each PSU.

The determining unit 602 is further configured to determine whether the plurality of PSUs are in a reload mode.

The determining unit 602 is further configured to determine, if the plurality of PSUs are in the overload mode, a target PSU of the plurality of PSUs that has a current sharing deviation greater than or equal to a preset deviation threshold.

And an output unit 603, configured to output the uneven-flow alarm information of the target PSU.

In an implementation manner, the determining unit 602 is specifically configured to:

The rated output current of the PSU is obtained.

And if the load proportion is greater than or equal to a preset proportion threshold value, determining that the PSUs are in a heavy-load mode.

And calculating the ratio of the total output current to the total rated output current to obtain the load ratio.

In an implementation, the number of PSUs is two, and the computing device further includes a current sharing bus; the two PSUs are electrically connected to the current sharing bus bar. The apparatus further comprises: a transmitting unit 604, wherein:

A sending unit 604, configured to send a voltage regulation instruction to the first PSU after outputting the non-current-sharing alarm information of the target PSU, where the voltage regulation instruction is configured to instruct the first PSU to increase the output voltage according to a preset adjustment step length until the output current of the second PSU decreases to a preset current value; wherein the first PSU is any one of the two PSUs, and the second PSU is a PSU other than the first PSU of the two PSUs.

The obtaining unit 601 is further configured to obtain response data, where the response data includes one or more of bus voltage change data of a current sharing bus, a current sharing conversion coefficient of the first PSU, and output voltage change data of the second PSU; the current sharing conversion coefficient refers to a proportionality coefficient for converting the output current of the PSU into the voltage input to the current sharing bus.

The determining unit 602 is further configured to determine a faulty PSU from the two PSUs based on the response data.

The output unit 603 is further configured to output fault indication information of the faulty PSU.

If not, determining whether the second PSU is a fault PSU according to the output voltage change data of the second PSU.

And if the bus voltage change data of the current-sharing bus indicates that the bus voltage of the current-sharing bus is not changed, determining that the first PSU is a fault PSU.

And if the current sharing conversion coefficient of the first PSU is not matched with the preset current sharing conversion coefficient, determining that the first PSU is a fault PSU.

If the output voltage change data of the second PSU indicates that the output voltage of the second PSU does not rise, the second PSU is determined to be a faulty PSU.

In one implementation, the response data includes a current sharing conversion coefficient of the first PSU; the acquiring unit 601 is specifically configured to:

And calculating to obtain the current sharing conversion coefficient of the first PSU according to the bus voltage of the current sharing bus, the output current of the first PSU, the current sharing resistance of the first PSU and the current sharing resistance of the second PSU.

Those of skill in the art will further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments of the application may be implemented by electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The present application also provides a computer readable storage medium having stored thereon a computer program comprising program instructions which when executed by a computer perform the functions of any of the method embodiments described above.

The computer readable storage medium includes but is not limited to flash memory, hard disk, solid state disk.

The application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

The preset (e.g., a preset sequence) in the present application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those skilled in the art will understand that, for convenience and brevity, the specific working process of the system, apparatus and unit described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

The same or similar parts may be referred to each other in the various embodiments of the application. In the embodiments of the present application, and the respective implementation/implementation methods in the embodiments, if there is no specific description and logic conflict, terms and/or descriptions between different embodiments, and between the respective implementation/implementation methods in the embodiments, may be consistent and may refer to each other, and technical features in the different embodiments, and the respective implementation/implementation methods in the embodiments, may be combined to form a new embodiment, implementation, or implementation method according to their inherent logic relationship. The embodiments of the present application described above do not limit the scope of the present application.

Claims

1. The power supply current sharing detection method is characterized by being applied to the computing equipment; the computing device comprises a plurality of power supply units PSUs; the plurality of PSUs are for powering the computing device; the method comprises the following steps:

obtaining output currents of the PSUs according to preset time intervals, and determining average output currents according to the output currents of the PSUs;

determining the current sharing deviation degree of each PSU according to the average output current and the output current of each PSU;

determining whether the plurality of PSUs are in a heavy load mode;

2. The method of claim 1, wherein the determining whether the plurality of PSUs are in a heavy load mode comprises:

acquiring rated output current of the PSU;

Determining a load ratio according to the output currents of the PSUs, the rated output currents and the number of the PSUs;

3. The method of claim 2, wherein the determining the load ratio based on the output current of the plurality of PSUs, the rated output current, and the number of PSUs comprises:

determining a total output current from the output currents of the plurality of PSUs;

Determining a total rated output current based on the rated output current and the number of PSUs;

and calculating the ratio of the total output current to the total rated output current to obtain a load ratio.

4. A method according to any of claims 1-3, wherein the number of PSUs is two, the computing device further comprising a current sharing bus; the two PSUs are electrically connected with the current sharing bus;

After the outputting of the non-current share warning information of the target PSU, the method further includes:

Sending a voltage regulating instruction to a first PSU, wherein the voltage regulating instruction is used for indicating the first PSU to increase output voltage according to a preset regulating step length until the output current of a second PSU is reduced to a preset current value; wherein the first PSU is any one of the two PSUs, and the second PSU is a PSU other than the first PSU of the two PSUs;

Obtaining response data, wherein the response data comprises one or more of bus voltage change data of the current sharing bus, current sharing conversion coefficients of the first PSU and output voltage change data of the second PSU; the current sharing conversion coefficient is a proportionality coefficient for converting the output current of the PSU into the voltage input to the current sharing bus;

and determining a fault PSU from the two PSUs according to the response data, and outputting fault indication information of the fault PSU.

5. The method of claim 4, wherein said determining a faulty PSU from said two PSUs based on said response data comprises:

Determining whether the first PSU is a fault PSU according to bus voltage change data of the current sharing bus or bus voltage change data of the current sharing bus and current sharing conversion coefficients of the first PSU;

6. The method of claim 5, wherein determining whether the first PSU is a faulty PSU based on bus voltage change data of the current sharing bus comprises:

7. The method of claim 5, wherein the determining whether the first PSU is a faulty PSU based on bus voltage change data of the current-share bus and current-share conversion coefficients of the first PSU comprises:

If the bus voltage change data of the current-sharing bus indicates that the bus voltage of the current-sharing bus is changed, comparing the current-sharing conversion coefficient of the first PSU with a preset current-sharing conversion coefficient;

8. A method according to any of claims 5-7, wherein said determining whether the second PSU is a faulty PSU based on output voltage variation data of the second PSU comprises:

And if the output voltage change data of the second PSU indicates that the output voltage of the second PSU is not increased, determining that the second PSU is a fault PSU.

9. The method according to any of claims 4-8, wherein the response data comprises current sharing conversion coefficients of the first PSU; the acquiring response data includes:

acquiring bus voltage of the current sharing bus, output current of the first PSU, current sharing resistance of the first PSU and current sharing resistance of the second PSU;

10. A computing device, characterized in that it comprises a baseboard management controller BMC, a plurality of power supply units PSU and a memory;

the BMC is respectively and electrically connected with the PSUs and the memory;

The plurality of PSUs are for powering the computing device;

the memory is used for storing computer program instructions;

the BMC being operable to invoke the program instructions to cause the computing device to perform the method steps of any of claims 1-9.