Power supply control method and device, control equipment, control circuit and storage medium

Abstract

The invention discloses a power supply control method, a power supply control device, control equipment, a control circuit and a storage medium. The method is applied to the control equipment in the control circuit, the control circuit further comprises a power supply circuit and sampling equipment, the power supply circuit comprises N paths of power supplies, and N is greater than or equal to 2; each power supply is provided with a power converter; the sampling equipment is respectively connected with each path of power supply and the control equipment; the control equipment is also connected with the power converter of each path of power supply; the output voltage of each path of power supply is determined by the respective adjusting proportion and the preset reference voltage; the method comprises the following steps: acquiring power supply state parameters of each path of power supply in N paths of power supplies so as to determine an abnormal power supply; and reducing the current regulation proportion of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current regulation proportion and the reference voltage. According to the scheme, balanced output of the N paths of power supplies can be realized, and safe and reliable long-term work of the N paths of power supplies is guaranteed.

Description

Technical Field

[0001] This application belongs to the technical field of circuit control, and particularly relates to a power control method, a power control device, a control device, a control circuit, and a computer-readable storage medium. Background Art

[0002] In industrial application scenarios, multiple power supplies are the basis for ensuring the continuous operation of industrial equipment. Currently, due to line power supply differences and device individual differences, usually one of the multiple power supplies continuously serves as the main output, and the other power supplies serve as backups until the power supply serving as the main output fails and then another power supply is switched to be the new main output. This may cause each power supply to fail in sequence, resulting in the multiple power supplies being unable to work safely and reliably for a long time. Summary of the Invention

[0003] This application provides a power control method, a power control device, a control device, a control circuit, and a computer-readable storage medium, which can achieve balanced output of N power supplies and ensure the safe and reliable long-term operation of the N power supplies.

[0004] In a first aspect, this application provides a control circuit, which includes: a power supply circuit, a control device, and a sampling device; wherein, the power supply circuit includes N power supplies, N≥2, and each of the power supplies is provided with a power converter; the sampling device is respectively connected to each of the power supplies, and the sampling device is also connected to the control device; the control device is also connected to the power converters of each of the power supplies;

[0005] The control device is configured to determine an abnormal power supply according to the sampling result of the sampling device, and output a control signal to the power converter of the abnormal power supply.

[0006] To extend the lifespan of the power supply, a control circuit is proposed in the solution of this application. The sampling device in the control circuit can monitor each power supply; the control device in the control circuit can timely determine the abnormal power supply among the N power supplies according to the monitoring result (i.e., the sampling result of the sampling device). After determining the abnormal power supply, the control device will output a control signal to the power converter of the abnormal power supply to timely relieve the abnormal state of the abnormal power supply, ensure the safety of the abnormal power supply, and balance the output of the N power supplies.

[0007] In some embodiments, each of the power supplies is further provided with a unidirectional conduction unit; wherein, the conduction direction of the unidirectional conduction unit is the output direction of the power converter.

[0008] In the embodiments of the present application, through the unidirectional conduction unit, when integrating the outputs of the power converters of each power supply, the flux of unidirectional conduction in the power output direction is adjusted; specifically, according to the selection of the unidirectional conduction unit, the integrated output can ultimately be a single-channel power output, or the integrated output can be multiple channels of power output in a certain flux ratio, thereby meeting the output requirements of different power circuits.

[0009] In some embodiments, each power supply is further provided with a current sampling unit; the sampling devices include: a temperature sampling device, a current sampling device, and a voltage sampling device; wherein, the sampling object of the temperature sampling device is the power converter of each power supply, the current sampling device is respectively connected to the current sampling unit of each power supply, and the voltage sampling device is respectively connected to the output lines of the power converters of each power supply.

[0010] In the embodiments of the present application, the sampling device can specifically sample from three sampling dimensions of temperature, current, and voltage to help the control device determine whether there are abnormal conditions such as overheating, overcurrent, and overvoltage in the power circuit; further, since the power can be calculated based on the current and voltage, the control device can also determine whether there is an overload abnormal condition of the power supply based on this; thus, multi-dimensional abnormal monitoring of the power circuit can be realized.

[0011] In a second aspect, the present application provides a power control method, which is applied to a control device in a control circuit, and the output voltages of each power supply in the control circuit are respectively determined by their respective adjustment ratios and a preset reference voltage. The power control method includes:

[0012] Obtain the power status parameters of each power supply in the N power supplies;

[0013] Determine the abnormal power supply according to the power status parameters of each power supply;

[0014] Reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0015] To extend the lifespan of the power supply, the proposed solution in this application monitors each power supply, specifically by collecting the power status parameters of each power supply. Since the power status parameters change with the working state of the power supply, by analyzing the power status parameters of each power supply, the power supply in an abnormal state, i.e., the abnormal power supply, can be determined in a timely manner. Since parameters such as current, temperature, and power are all positively correlated with voltage to a certain extent, this application reduces the output voltage of the abnormal power supply to prompt the abnormal power supply to relieve its abnormal state as soon as possible, thereby preventing the power supply from working in an abnormal state for a long time and extending the lifespan of the power supply. Thus, the balanced output of N power supplies is achieved, ensuring the safe and reliable long-term operation of the N power supplies. Also, since each power supply is based on a reference voltage and realizes the up and down floating adjustment of the output voltage through its respective adjustment ratio. Based on this, for the abnormal voltage, in this embodiment, by reducing its current adjustment ratio, the control of its output voltage is quickly achieved, simplifying the control process of the abnormal power supply and improving the control efficiency of the abnormal power supply.

[0016] In some embodiments, reducing the current adjustment ratio of the abnormal power supply includes:

[0017] Reducing the current adjustment ratio of the abnormal power supply according to a preset ratio interval value.

[0018] Through the preset ratio interval value, the control device can gradually reduce the output voltage of the abnormal power supply to avoid excessive adjustment of the abnormal power supply in a short period of time and achieve the orderly control of the abnormal power supply.

[0019] In some embodiments, reducing the current adjustment ratio of the abnormal power supply includes:

[0020] Determining the degree of abnormality of the abnormal power supply;

[0021] Reducing the current adjustment ratio of the abnormal power supply according to the degree of abnormality.

[0022] The control device can also make an adaptive adjustment to the abnormal power supply according to the degree of abnormality of the abnormal power supply to achieve the flexible control of the abnormal power supply.

[0023] In some embodiments, before reducing the current adjustment ratio of the abnormal power supply, the power control method further includes:

[0024] Comparing the current adjustment ratio of the abnormal power supply with a preset minimum adjustment ratio;

[0025] Correspondingly, reducing the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage includes:

[0026] When the current adjustment ratio of the abnormal power supply is greater than the preset minimum adjustment ratio, reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0027] To ensure the availability of the power supply circuit, a minimum adjustment ratio is set. During the control of each power supply, this minimum adjustment ratio can be used as the control limit; that is, generally, the current adjustment ratio of each power supply can only be reduced to this minimum adjustment ratio at most to ensure that the output of this power supply is meaningful.

[0028] In some embodiments, after reducing the current adjustment ratio of the abnormal power supply, the power supply control method further includes:

[0029] Determine the current adjustment ratio of each power supply;

[0030] When the current adjustment ratio of each power supply is the preset minimum adjustment ratio, output a reminder message.

[0031] When the current adjustment ratio of each power supply is the minimum adjustment ratio, by outputting a reminder message, the possible power failure risk in the power supply circuit can be informed in advance, so that the user can make an advance deployment of the coping strategy for this risk, thereby ensuring the normal operation of the power supply object of the N power supplies.

[0032] In some embodiments, after reducing the current adjustment ratio of the abnormal power supply, the power supply control method further includes:

[0033] Determine the real-time output voltage of each power supply;

[0034] Determine the power supply corresponding to the maximum real-time output voltage as the main output power supply.

[0035] This embodiment introduces a competition mechanism. After each control of the abnormal power supply, a new main output power supply is re-determined among the N power supplies through this competition mechanism, thereby realizing the dynamic update of the main output power supply and avoiding the accelerated aging of the line of a certain power supply due to being selected as the main output power supply for a long time.

[0036] In some embodiments, after determining the current adjustment ratio of the abnormal power supply, the power supply control method further includes:

[0037] When the current adjustment ratio of the abnormal power supply is the preset minimum adjustment ratio, turn off the abnormal power supply.

[0038] When the current adjustment ratio of a certain power supply has reached the lowest adjustment ratio and it is still abnormal, it is very likely that the abnormality is caused by a line fault of this power supply. Considering that the current adjustment ratio of this power supply cannot be further adjusted downward, in order to ensure power safety, this embodiment will turn off such an abnormal power supply to avoid safety problems caused by its long-term operation in an abnormal state.

[0039] In some embodiments, determining an abnormal power supply according to the power supply state parameters of each power supply includes:

[0040] Respectively compare the power supply state parameters of each power supply with a preset parameter threshold;

[0041] Determine the power supply with power supply state parameters greater than or equal to the parameter threshold as an abnormal power supply.

[0042] This embodiment proposes a parameter threshold for judging an abnormal power supply to achieve accurate judgment of an abnormal power supply.

[0043] In some embodiments, after reducing the current adjustment ratio of an abnormal power supply, the power control method further includes:

[0044] When the power supply state parameters of the abnormal power supply continue to be less than or equal to the parameter threshold and the continuous duration is greater than a preset duration threshold, restore the current adjustment ratio of the abnormal power supply.

[0045] Considering that the instability of the abnormal power supply may be temporary, this embodiment can restore the current adjustment ratio of the abnormal power supply after the abnormal power supply has returned to normal for a long time, thereby restoring the output voltage of the abnormal power supply. In this way, the control of the power supply is no longer a one-way control (for example, not just simply controlling the power supply to reduce the output voltage), but a flexible two-way control.

[0046] In some embodiments, the power supply state parameters include at least one of the following: real-time output voltage, real-time output current, real-time temperature, and real-time power.

[0047] In this embodiment, the overvoltage, overcurrent, overheating, and overload conditions of the power supply can be mainly considered. Specifically, through the monitoring of the real-time output voltage, timely identification of abnormal power supplies with overvoltage can be achieved; through the monitoring of the real-time output current, timely identification of abnormal power supplies with overcurrent can be achieved; through the monitoring of the real-time temperature, timely identification of abnormal power supplies with overheating can be achieved; through the monitoring of the real-time power, timely identification of abnormal power supplies with overload can be achieved.

[0048] Thirdly, the present application provides a power control device. The power control method is applied to a control device in a control circuit, and the output voltages of all power supplies in the control circuit are determined by their respective adjustment ratios and a preset reference voltage. The power control device includes:

[0049] An acquisition module, configured to acquire the power status parameters of each of the N power supplies;

[0050] A first determination module, configured to determine an abnormal power supply according to the power status parameters of each power supply;

[0051] A first control module, configured to reduce the current adjustment ratio of the abnormal power supply, so as to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0052] Fourthly, the present application provides a control device. The control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the method in the second aspect are implemented.

[0053] Fifthly, the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method in the second aspect are implemented.

[0054] Sixthly, the present application provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by one or more processors, the steps of the method in the second aspect are implemented.

[0055] It can be understood that the beneficial effects of the third to sixth aspects can refer to the relevant descriptions in the second aspect, and will not be elaborated here. Description of the Drawings

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0057] Figure 1 is a schematic flowchart of the implementation of the power control method provided by the embodiment of the present application;

[0058] Figure 2 is a schematic circuit diagram of the control circuit provided by the embodiment of the present application;

[0059] Figure 3It is a structural block diagram of a power control device provided by an embodiment of the present application;

[0060] Figure 4 It is a schematic structural diagram of a control device provided by an embodiment of the present application. Detailed implementation manners

[0061] Next, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the drawings are intended to cover non-exclusive inclusion.

[0063] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features.

[0064] Referring to "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0065] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0066] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), unless otherwise specifically defined.

[0067] The stability of industrial equipment is closely related to its power supply equipment (i.e., power source). If the power supply is abnormal, it may cause the industrial equipment to malfunction, thus affecting the operation of the entire system. Based on this, in industrial application scenarios, multiple power sources are the basis for ensuring the continuous operation of industrial equipment. Only as an example, the industrial equipment can be a UHV energy storage valve control device, etc. Here, there is no limitation on industrial equipment with multiple power source requirements.

[0068] In multiple power sources, due to line power supply differences and device individual differences, only one power source may continuously maintain output during the output process. This will cause the circuit of this path to age rapidly and finally fail. Since different power sources are redundant backups for each other, after the power source with energy on this path fails, it will switch to another power source to continue maintaining output. Obviously, the above process increases the operating burden on each power source and easily causes each power source to fail in sequence.

[0069] Based on the above considerations, the embodiments of the present application propose a power source control method, a power source control device, a control circuit, a control device, and a storage medium, which can monitor the output situation of each power source in real time and can adjust the output of the power source in real time. To illustrate the technical solutions proposed by the embodiments of the present application, the following will be described through specific embodiments.

[0070] The following describes a control circuit provided by an embodiment of the present application. The control circuit includes: a power source circuit, a control device, and a sampling device. Among them, the power source circuit includes N power sources, N≥2; that is, these N power sources are actually multiple power sources in a broad sense. Each power source is provided with a power source converter; through the corresponding power source converters, the input of each power source can be converted to obtain the output of each power source. In some examples, the function of the power source converter can be specifically: when the input power source is an AC power source, it is converted into a DC power source; and when the input power source is a high voltage, it is converted into a low voltage.

[0071] Specifically, in the control circuit, the sampling device is respectively connected to each power source, and the sampling device is also connected to the control device; the control device is also connected to the power source converters of each power source. It can be understood that the sampling result of the sampling device can be transmitted to the control device; thus, the control device can determine the abnormal power source according to the sampling result of the sampling device and output a control signal to the power source converter of the abnormal power source.

[0072] In some embodiments, each power supply further includes a unidirectional conduction unit; wherein, the conduction direction of the unidirectional conduction unit is the output direction of the power converter. Merely by way of example, the unidirectional conduction unit may be a diode or a MOS transistor, etc., and the specific type of the unidirectional conduction unit is not limited herein. Specifically, in an application scenario where the power supply circuit has multiple inputs and a single output, the unidirectional conduction unit may be a diode, and thus, through the forward conduction and reverse cut-off characteristics of the diode, a competition mechanism for each power supply can be realized, ensuring that only one power supply can be used as the main output power supply to achieve a single output. In an application scenario where the power supply circuit has multiple inputs and multiple outputs, the unidirectional conduction unit may be a MOS transistor with a relatively complex selection, so that the outputs of each power supply after passing through the MOS transistor can be balanced, and each power supply can be output jointly according to power distribution to achieve multiple outputs.

[0073] In some embodiments, each power supply further includes a current sampling unit. Merely by way of example, the current sampling unit may be a resistor or other components conducive to measuring current, and is not limited herein; the sampling devices include: a temperature sampling device, a current sampling device, and / or a voltage sampling device; wherein, the temperature sampling device may perform contact or non-contact temperature sampling, and its sampling object is the power converter of each power supply; the current sampling device is respectively connected to the current sampling unit of each power supply; the voltage sampling device is respectively connected to the output lines of the power converters of each power supply. It can be understood that the connections established by the current sampling device and the voltage sampling device with the power supply circuit are specifically electrical connections; while for the temperature sampling device, due to its different sampling methods, it may not need to establish an electrical connection with the power supply circuit, as long as its sampling object is the power converter of each power supply.

[0074] Please refer to Figure 1 , Figure 1 which gives a possible example of the control circuit composed of the power supply circuit, the control device, and the sampling device.

[0075] Next, a power supply control method provided by an embodiment of the present application will be described. The execution subject of the power supply control method may be a control device with a control function in the control circuit. Please refer to Figure 2 , the power supply control method in the embodiment of the present application includes:

[0076] Step 201, obtain the power state parameters of each power supply among the N power supplies.

[0077] The control device can sample the power supply circuit composed of N power supplies through a sampling device, and thus obtain the power supply state parameters of each power supply according to the sampling results. Among them, the sampling device can be integrated into the control device; or, the sampling device can also be independent of the control device and have a communication connection with the control device. Specifically, the sampling device can be a sampling circuit, which can sample each power supply through an analog-to-digital converter (ADC), and the sampling results can be output to the control device, so that the control device can obtain the power supply state parameters of each power supply through the sampling results for subsequent analysis and processing by the control device.

[0078] In some embodiments, common power supply abnormalities include, but are not limited to: overvoltage, overcurrent, overheating, and overload. Among them, overvoltage means that the output voltage of the power supply is too high, overcurrent means that the output current of the power supply is high, overheating means that the temperature of the power supply chip (specifically, the power converter) is overheated, and overload means that the output power of the power supply is too high. Based on the above common power supply abnormalities, the power supply state parameters concerned in the embodiments of the present application may include, but are not limited to, one or more of the following: real-time output voltage, real-time output current, real-time temperature, and real-time power. Among them, the real-time output voltage, real-time output current, and real-time temperature can all be directly sampled by the sampling device; while the real-time power can be calculated from the real-time output voltage and real-time output current sampled by the sampling device. The embodiments of the present application do not limit the acquisition methods of each power supply state parameter. Specifically, since the control of the power supply circuit based on power usually occurs in an application scenario with multiple inputs and multiple outputs, in the case where the power supply circuit has multiple inputs and a single output, the power supply state parameter may not include real-time power; in the case where the power supply circuit has multiple inputs and multiple outputs, the power supply state parameter may include real-time power.

[0079] Step 202: Determine the abnormal power supply according to the power supply state parameters of each power supply.

[0080] The control device has preset the state evaluation conditions of the power supply, where the state evaluation conditions propose the abnormal value range and / or normal value range of the power supply state parameters. Based on this, after obtaining the power supply state parameters of each power supply, the control device can compare the power supply state parameters of each power supply with the abnormal value range and / or normal value range proposed by the state evaluation conditions respectively, and thus determine whether there is an abnormal power supply among these N power supplies.

[0081] Step 203: Reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0082] It can be understood that the output current, output power, and temperature of the power supply usually also decrease as the output voltage decreases. Therefore, the control device can control the output voltage of the abnormal power supply to prevent the abnormal power supply from remaining in an abnormal state for a long time. Among them, the output voltage of each power supply is specifically determined by its respective adjustment ratio and a preset reference voltage. In some examples, the reference voltage can be 14V or other values, which can be specifically determined by the rated voltage of the electrical device and are not limited here. Taking any power supply as an example, the adjustment ratio of this power supply refers to the ratio by which the output voltage of this power supply fluctuates based on the reference voltage. When the adjustment ratio is greater than 1, the output voltage floats upward compared to the reference voltage; when the adjustment ratio is less than 1, the output voltage floats downward compared to the reference voltage. Therefore, by reducing the current adjustment ratio of the abnormal power supply, the control device can control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage, thereby achieving the control of the abnormal power supply.

[0083] In some embodiments, the control device pre-sets a value range for the adjustment ratio, such as [80%, 120%], that is, the highest adjustment ratio is 120% and the lowest adjustment ratio is 80%. Based on this, when the control device needs to reduce the output voltage of the abnormal power supply, it can first compare the current adjustment ratio of the abnormal power supply with the lowest adjustment ratio. When the current adjustment ratio of the abnormal power supply is greater than the lowest adjustment ratio, it can be known that there is room for downward adjustment of the current adjustment ratio. Therefore, the control device can reduce the current adjustment ratio of the abnormal power supply in a linear or non-linear manner. In this way, the control device can control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the given reference voltage. However, it should be noted that considering the limitation of the lowest adjustment ratio, the current adjustment ratio cannot be reduced to less than the lowest adjustment ratio.

[0084] Specifically, in the case of linearly reducing the current adjustment ratio of the abnormal power supply, the control device can pre-set a ratio interval value, and thus can reduce the current adjustment ratio of the abnormal power supply according to the pre-set ratio interval value. Only as an example, the adjustment ratio is set with a value range of [80%, 120%], and the ratio interval value can be 10%. Then, for a power supply with an initial adjustment ratio of 120%, when it is first detected that it is abnormal, the current adjustment ratio can be reduced to 110% according to the ratio interval value of 10%; when it is detected that it is abnormal for the second time, the current adjustment ratio can be continuously reduced to 100% according to the ratio interval value of 10%, and so on, which will not be elaborated here.

[0085] Specifically, in the case of non-linearly reducing the current regulation ratio of an abnormal power supply, the control device can determine the degree of abnormality of the abnormal power supply, and then reduce the current regulation ratio of the abnormal power supply according to this degree of abnormality. Among them, the degree of abnormality can be specifically: the ratio of the power status parameter of the abnormal power supply exceeding the preset parameter threshold. Only as an example, the regulation ratio is set with a value range of [80%, 120%]. The real-time temperature of the abnormal power supply is 60 degrees, and the temperature threshold is 50 degrees. Then the ratio of the real-time temperature of the abnormal power supply exceeding the temperature threshold is 20%. Assuming that the current regulation ratio of the abnormal power supply is 120%, then based on the degree of abnormality (that is, this ratio of 20%), the current regulation ratio of the abnormal power supply can be reduced to 100%, and so on, which will not be elaborated here.

[0086] In some embodiments, for the application scenario of linearly reducing the current regulation ratio of an abnormal power supply, a multi-level output mode can also be set for the power converters of each power supply. Among them, each level of output mode corresponds to a regulation ratio. Then, the control device can determine the current regulation ratio of each power supply by reading the output mode currently adopted by the power converter of each power supply; correspondingly, subsequently, the control device can also reduce the current regulation ratio of the abnormal power supply by adjusting the output mode adopted by the power converter of the abnormal power supply. Among them, when adjusting the output mode adopted by the power converter of the abnormal power supply, it can be specifically adjusted level by level, rather than across levels, to avoid too large an adjustment amplitude.

[0087] In some examples, the output mode may include but is not limited to: V high mode, V mid mode and V low mode. Among them, the regulation ratio corresponding to the V high mode is 120%, the regulation ratio corresponding to the V mid mode is 100%, and the regulation ratio corresponding to the V low mode is 80%. Taking the reference voltage of 14V as an example, if the power converter of the abnormal power supply is in the V high mode, the control device can control the power converter to switch to the V mid mode, which can make the output voltage of the abnormal power supply drop from about 16.8V to about 14V. Similarly, if the power converter of the abnormal power supply is in the V mid mode, the control device can control the power converter to switch to the V low mode, which can make the output voltage of the abnormal power supply drop from about 14V to about 11.2V.

[0088] In some embodiments, to improve the reliability of the power supply circuit, after reducing the current adjustment ratio of the abnormal power supply, the control device may re-determine the current adjustment ratio of each power supply, and output a reminder message when the current adjustment ratio of each power supply is the lowest adjustment ratio. That is, every time an abnormal power supply is detected and adjusted, it is necessary to consider again whether the current adjustment ratio of all power supplies has reached the lowest adjustment ratio. If the current adjustment ratio of all power supplies has reached the lowest adjustment ratio, it indicates that multiple abnormalities have occurred successively in each power supply, which is one of the precursor manifestations of power supply failure. In this case, the control device may output a reminder message to warn of the possible risk of power supply failure, reminding the user that the output power of each current power supply has been adjusted to the lowest, and it is necessary for the user to check and repair the power supply circuit in advance.

[0089] In some embodiments, in the application scenario where the power supply circuit has N inputs and a single output, to avoid a certain power supply being selected as the main output power supply for a long time, which may cause its circuit to age rapidly, a competition mechanism is proposed. The competition mechanism is described in detail as follows: After reducing the current adjustment ratio of the abnormal power supply (that is, after reducing the output voltage of the abnormal power supply), determine the real-time output voltage of each power supply, and determine the power supply corresponding to the maximum real-time output voltage as the main output power supply. It can be understood that due to the influence of the consistency of circuit components, even if different power supplies use the same adjustment ratio, their output voltages cannot be exactly the same; therefore, after each adjustment of the abnormal power supply, the main output power supply can be re-selected according to the real-time output voltage of each power supply, thereby realizing the dynamic update of the main output power supply.

[0090] Considering that after the current adjustment ratio of the abnormal power supply changes, it takes some time for its output voltage to stabilize. Therefore, it can be to determine the real-time output voltage of each power supply after a preset duration of reducing the current adjustment ratio of the abnormal power supply (that is, reducing the output voltage of the abnormal power supply), to ensure the authenticity and accuracy of the real-time output voltage of each power supply collected, and determine the power supply corresponding to the maximum real-time output voltage as the main output power supply.

[0091] Of course, this competition mechanism can also be achieved by optimizing the power supply circuit, which will not be elaborated here.

[0092] In some embodiments, as previously described, the value range of the adjustment ratio is limited. Based on this, after determining the abnormal power supply, it is possible that the current adjustment ratio of the abnormal power supply has reached the lowest adjustment ratio. In this regard, it can be preliminarily judged that there is a fault in the circuit of this abnormal power supply. To ensure the safety of the entire power supply circuit, the control device can turn off this abnormal power supply.

[0093] In some examples, the output mode of the i-th power supply is initially Vhigh mode. Assume that after a duration of T1, the i-th power supply is determined to be an abnormal power supply, then the control device can control its output mode to change to V mid mode. Assume that after a duration of T2, the i-th power supply is determined to be an abnormal power supply again, then the control device can control its output mode to change to V low mode. Assume that after a duration of T3, the i-th power supply is determined to be an abnormal power supply once again. Since its output mode is already V low mode and it is no longer possible to reduce its current adjustment ratio, the control device can turn off the i-th power supply.

[0094] In some embodiments, the control device may be pre-set with parameter thresholds. It can be understood that the parameter thresholds define the abnormal value range and the normal value range of the power supply state parameters. Specifically, when the power supply state parameters include real-time output voltage, real-time output current, real-time temperature, and real-time power, generally, the abnormal value range of the power supply state parameters is considered to be: greater than or equal to the parameter threshold; the normal value range of the power supply state parameters is: less than the parameter threshold. Based on this, step 102 can be specifically manifested as: comparing the power supply state parameters of each power supply with the pre-set parameter thresholds respectively, and determining the power supplies with power supply state parameters greater than the parameter threshold as abnormal power supplies. Also considering that the power supply state parameters usually fluctuate, in order to avoid false detection, the above steps can be further optimized as: comparing the power supply state parameters of each power supply with the pre-set parameter thresholds respectively, and determining the power supplies with N consecutive power supply state parameters all greater than the parameter threshold as abnormal power supplies, where N is a pre-set positive integer.

[0095] It should be noted that for the real-time output current, there is only one corresponding parameter threshold (specifically, the current threshold). Similarly, for the real-time temperature, there is also only one corresponding parameter threshold (specifically, the temperature threshold). For the real-time power, the corresponding parameter threshold (specifically, the power threshold) for each power supply can be set respectively according to the maximum output power of each power supply. For the real-time output voltage, since the current adjustment ratios of each power supply are not the same, for each adjustment ratio, a corresponding parameter threshold (specifically, the voltage threshold) can be set.

[0096] In some examples, taking the reference voltage as 14V as an example, assume that the output mode of the power converter of the i-th power supply is V high mode, the output mode of the power converter of the (i + 1)-th power supply is V mid mode, the output mode of the power converter of the (i + 2)-th power supply is V lowIn the [mode], the voltage threshold corresponding to the real-time output voltage of the i-th power supply is 17V, the voltage threshold corresponding to the real-time output voltage of the (i + 1)-th power supply is 14.2V, and the voltage threshold corresponding to the real-time output voltage of the (i + 2)-th power supply is 11.4V.

[0097] In some embodiments, the abnormal condition of the abnormal power supply may be caused by external environmental factors. Considering that the duration of some external environmental factors is short, to achieve two-way regulation of the power supply, after reducing the output voltage of the abnormal power supply, if the power status parameters of the abnormal power supply continue to be less than the parameter threshold and the duration is greater than the preset duration threshold, it indicates that it has actually returned to normal and can operate normally for a long time. In this case, the control device can consider restoring the output voltage of the abnormal power supply; that is, restoring the output voltage of the abnormal power supply to the voltage before reduction.

[0098] In some examples, assume that the output mode of the power converter of the i-th power supply is initially V high mode. At time T1, due to overheating, the control device changes its output mode to V mid mode. Subsequently, for a long period of time, the i-th power supply always operates normally without any abnormal conditions. Then at time T2, the control device can restore its output mode to V high mode. Wherein, T2 - T1 > T0, and T0 is the preset duration threshold.

[0099] As can be seen from the above, in order to extend the lifespan of the power supply, the embodiments of the present application propose to monitor each power supply, specifically by collecting the power status parameters of each power supply. Since the power status parameters will change with the working state of the power supply, by analyzing the power status parameters of each power supply, the power supply in an abnormal state, that is, the abnormal power supply, can be determined in a timely manner. The present application reduces the output voltage of the abnormal power supply to prompt the abnormal power supply to relieve its abnormal state as soon as possible, thereby avoiding the power supply working in an abnormal state for a long time and extending the lifespan of the power supply. Thus, balanced output of N power supplies is achieved, ensuring the safe and reliable long-term operation of N power supplies.

[0100] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0101] Corresponding to the power supply control method provided above, the embodiments of the present application further provide a power supply control device. This power supply control device is applied to the control device in the control circuit, and the output voltages of each power supply in the control circuit are determined by their respective adjustment ratios and a preset reference voltage. Refer to Figure 3 As shown in, the power supply control device 3 in the embodiments of the present application includes:

[0102] An acquisition module 301, configured to acquire the power status parameters of each power supply among N power supplies;

[0103] A first determination module 302, configured to determine an abnormal power supply according to the power status parameters of each power supply;

[0104] A first control module 303, configured to reduce the current adjustment ratio of the abnormal power supply, so as to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0105] In some embodiments, the first control module 303 includes:

[0106] A first control unit, configured to reduce the current adjustment ratio of the abnormal power supply according to a preset ratio interval value.

[0107] In some implementations, the first control module 303 includes:

[0108] A second control unit, configured to determine the degree of abnormality of the abnormal power supply, and reduce the current adjustment ratio of the abnormal power supply according to the degree of abnormality.

[0109] In some embodiments, the power control device 3 further includes:

[0110] A comparison module, configured to compare the current adjustment ratio of the abnormal power supply with a preset minimum adjustment ratio;

[0111] Correspondingly, the first control module 303 is specifically configured to, when the current adjustment ratio of the abnormal power supply is greater than the preset minimum adjustment ratio, reduce the current adjustment ratio of the abnormal power supply, so as to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0112] In some embodiments, the power control device 3 further includes:

[0113] A second determination module, configured to determine the current adjustment ratio of each power supply after reducing the current adjustment ratio of the abnormal power supply;

[0114] An output module, configured to output a reminder message when the current adjustment ratio of each power supply is the minimum adjustment ratio.

[0115] In some embodiments, the power control device 3 further includes:

[0116] A third determination module, configured to determine the real-time output voltage of each power supply after reducing the current adjustment ratio of the abnormal power supply;

[0117] A fourth determination module, configured to determine the power supply corresponding to the maximum real-time output voltage as the main output power supply.

[0118] In some embodiments, the power supply control device 3 further includes:

[0119] A second control module, configured to turn off the abnormal power supply when the current adjustment ratio of the abnormal power supply is the lowest adjustment ratio after determining the current adjustment ratio of the abnormal power supply.

[0120] In some embodiments, the first determination module 302 includes:

[0121] A comparison unit, configured to separately compare the power state parameters of each power supply with a preset parameter threshold;

[0122] A second determination unit, configured to determine a power supply with a power state parameter greater than or equal to the parameter threshold as an abnormal power supply.

[0123] In some embodiments, the power supply control device 3 further includes:

[0124] A third control module, configured to restore the output voltage of the abnormal power supply when the power state parameter of the abnormal power supply continuously remains less than the parameter threshold and the continuous duration is greater than a preset duration threshold after reducing the current adjustment ratio of the abnormal power supply.

[0125] In some embodiments, the power state parameter includes at least one of the following: real-time output voltage, real-time output current, real-time temperature, and real-time power.

[0126] As can be seen from the above, in order to extend the lifespan of the power supply, the embodiments of the present application propose to monitor each power supply, specifically by collecting the power state parameters of each power supply. Since the power state parameters change with the working state of the power supply, by analyzing the power state parameters of each power supply, the power supply in an abnormal state, that is, the abnormal power supply, can be determined in a timely manner. The present application reduces the output voltage of the abnormal power supply to prompt the abnormal power supply to relieve its abnormal state as soon as possible, thereby avoiding the power supply from working in an abnormal state for a long time and extending the lifespan of the power supply. Thus, balanced output of N power supplies is achieved, ensuring the safe and reliable long-term operation of the N power supplies. Also, since each power supply is based on a reference voltage and realizes the up and down floating adjustment of the output voltage through its respective adjustment ratio. Based on this, for the abnormal voltage, in this embodiment, the output voltage of the abnormal power supply is quickly controlled by reducing its current adjustment ratio, simplifying the control process of the abnormal power supply and improving the control efficiency of the abnormal power supply.

[0127] Corresponding to the power supply control method provided above, the embodiments of the present application further provide a control device. The control device is used to control a power supply circuit, and the power supply circuit includes N power supplies, N≥2, and the output voltages of each power supply are determined by their respective adjustment ratios and a preset reference voltage. Refer to Figure 4, the control device 4 in the embodiments of the present application includes: a memory 401, one or more processors 402 ( Figure 4 only one is shown in the figure) and a computer program stored on the memory 401 and executable on the processor. Among them: the memory 401 is used to store software programs and modules, and the processor 402 executes various functional applications and data processing by running the software programs and units stored in the memory 401 to obtain the resources corresponding to the above preset events. Specifically, when the processor 402 runs the above computer program stored in the memory 401, the following steps are implemented:

[0128] Obtain the power status parameters of each power supply among N power supplies;

[0129] Determine the abnormal power supply according to the power status parameters of each power supply;

[0130] Reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0131] Assume it is the first possible implementation manner, then in the second possible implementation manner provided based on the first possible implementation manner, reducing the current adjustment ratio of the abnormal power supply includes:

[0132] Reduce the current adjustment ratio of the abnormal power supply according to the preset ratio interval value.

[0133] In the third possible implementation manner provided based on the first possible implementation manner, reducing the current adjustment ratio of the abnormal power supply includes:

[0134] Determine the degree of abnormality of the abnormal power supply;

[0135] Reduce the current adjustment ratio of the abnormal power supply according to the degree of abnormality.

[0136] In the fourth possible implementation manner provided based on the first possible implementation manner, or the second possible implementation manner, or the third possible implementation manner, before reducing the current adjustment ratio of the abnormal power supply, the following steps are implemented when the processor 402 runs the computer program stored in the memory 401:

[0137] Compare the current adjustment ratio of the abnormal power supply with the preset minimum adjustment ratio;

[0138] Correspondingly, reducing the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage includes:

[0139] When the current adjustment ratio of the abnormal power supply is greater than the preset minimum adjustment ratio, reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

[0140] In a fifth possible implementation provided based on the first possible implementation, or the second possible implementation, or the third possible implementation, after reducing the current adjustment ratio of the abnormal power supply, when the processor 402 runs the computer program stored in the memory 401, the following steps are further implemented:

[0141] Determine the current adjustment ratio of each power supply;

[0142] When the current adjustment ratio of each power supply is the minimum adjustment ratio, output a reminder message.

[0143] In a sixth possible implementation provided based on the first possible implementation, or the second possible implementation, or the third possible implementation, after reducing the current adjustment ratio of the abnormal power supply, when the processor 402 runs the computer program stored in the memory 401, the following steps are further implemented:

[0144] Determine the real-time output voltage of each power supply;

[0145] Determine the power supply corresponding to the maximum real-time output voltage as the main output power supply.

[0146] In a seventh possible implementation provided based on the first possible implementation, or the second possible implementation, or the third possible implementation, after determining the current adjustment ratio of the abnormal power supply, when the processor 402 runs the computer program stored in the memory 401, the following steps are further implemented:

[0147] When the current adjustment ratio of the abnormal power supply is the minimum adjustment ratio, turn off the abnormal power supply.

[0148] In an eighth possible implementation provided based on the first possible implementation, or the second possible implementation, or the third possible implementation, determining the abnormal power supply according to the power supply status parameters of each power supply includes:

[0149] Compare the power supply status parameters of each power supply with the preset parameter threshold respectively;

[0150] Determine the power supply with the power supply status parameter greater than the parameter threshold as the abnormal power supply.

[0151] In a tenth possible implementation provided based on the eighth possible implementation, after reducing the output voltage of the abnormal power supply, when the processor 402 runs the computer program stored in the memory 401, the following steps are further implemented:

[0152] When the power state parameter of the abnormal power supply continuously is less than or equal to the parameter threshold and the continuous duration is greater than the preset duration threshold, restore the output voltage of the abnormal power supply.

[0153] In a tenth possible implementation provided based on the first possible implementation, or the second possible implementation, or the third possible implementation, or the fourth possible implementation, or the fifth possible implementation, or the sixth possible implementation, or the seventh possible implementation, or the eighth possible implementation, or the ninth possible implementation, the power state parameter includes at least one of the following: real-time output voltage, real-time output current, real-time temperature, and real-time power.

[0154] It should be understood that in the embodiments of the present application, the so-called processor 402 may be a central processing unit (CPU), and this processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or this processor may also be any conventional processor, etc.

[0155] The memory 401 may include a read-only memory and a random access memory, and provide instructions and data to the processor 402. A part or all of the memory 401 may also include a non-volatile random access memory. For example, the memory 401 may also store information about the device type.

[0156] As can be seen from the above, in order to extend the lifespan of the power supply, the embodiments of the present application propose to monitor each power supply, specifically by collecting the power status parameters of each power supply. Since the power status parameters will change with the working state of the power supply, by analyzing the power status parameters of each power supply, the power supply in an abnormal state, that is, the abnormal power supply, can be determined in a timely manner. The present application reduces the output voltage of the abnormal power supply to prompt the abnormal state of the abnormal power supply to be alleviated as soon as possible, thereby preventing the power supply from working in an abnormal state for a long time and extending the lifespan of the power supply. Thus, the balanced output of N power supplies is achieved, ensuring the safe and reliable long-term operation of the N power supplies. Also, since each power supply is based on a reference voltage and realizes the up and down floating adjustment of the output voltage through its respective adjustment ratio. Based on this, for an abnormal voltage, in this embodiment, by reducing its current adjustment ratio, the control of its output voltage can be quickly achieved, simplifying the control process of the abnormal power supply and improving the control efficiency of the abnormal power supply.

[0157] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the above device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiments and will not be elaborated here.

[0158] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0159] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of external device software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0160] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative. For example, the division of the above-mentioned modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the devices or units can be in an electrical, mechanical or other form.

[0161] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0162] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-mentioned method embodiments of the present application, it can also be completed by a computer program instructing the relevant hardware. The above-mentioned computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned method embodiments can be implemented. Among them, the above-mentioned computer program includes computer program code, and the above-mentioned computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The above-mentioned computer-readable storage medium can include: any entity or device, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer-readable memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the above-mentioned computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable storage medium does not include electrical carrier signals and telecommunication signals.

[0163] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included within the protection scope of the present application.

Claims

1. A control circuit, characterized in that, the control circuit includes: a power supply circuit, a control device and a sampling device; wherein, the power supply circuit includes N power supplies, N≥2, and each of the power supplies is provided with a power converter; the sampling device is respectively connected to each of the power supplies, and the sampling device is also connected to the control device; the control device is also connected to the power converters of each of the power supplies; the control device is configured to determine an abnormal power supply according to the sampling result of the sampling device, and output a control signal to the power converter of the abnormal power supply.

2. The control circuit according to claim 1, characterized in that, each of the power supplies is further provided with a unidirectional conduction unit; wherein, the conduction direction of the unidirectional conduction unit is the output direction of the power converter.

3. The control circuit according to claim 1, characterized in that, each of the power supplies is further provided with a current sampling unit; the sampling device includes: a temperature sampling device, a current sampling device and / or a voltage sampling device; wherein, the sampling object of the temperature sampling device is the power converter of each of the power supplies, the current sampling device is respectively connected to the current sampling units of each of the power supplies, and the voltage sampling device is respectively connected to the output lines of the power converters of each of the power supplies.

4. A power supply control method, characterized in that, the power supply control method is applied to the control device in the control circuit according to any one of claims 1-3, and the output voltages of each of the power supplies in the control circuit are respectively determined by their respective adjustment ratios and a preset reference voltage; the power supply control method includes: acquiring the power status parameters of each of the N power supplies; determining an abnormal power supply according to the power status parameters of each power supply; reducing the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

5. The power supply control method according to claim 4, characterized in that, the reducing the current adjustment ratio of the abnormal power supply includes: reducing the current adjustment ratio of the abnormal power supply according to a preset ratio interval value.

6. The power supply control method according to claim 4, characterized in that, the reducing the current adjustment ratio of the abnormal power supply includes: determining the degree of abnormality of the abnormal power supply; reducing the current adjustment ratio of the abnormal power supply according to the degree of abnormality.

7. The power supply control method according to any one of claims 4 to 6, characterized in that, before the reducing the current adjustment ratio of the abnormal power supply, the power supply control method further includes: comparing the current adjustment ratio of the abnormal power supply with a preset minimum adjustment ratio; correspondingly, the reducing the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage includes: When the current adjustment ratio of the abnormal power supply is greater than a preset minimum adjustment ratio, reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

8. The power supply control method according to any one of claims 4 to 6, wherein, after reducing the current adjustment ratio of the abnormal power supply, the power supply control method further includes: determining the current adjustment ratio of each power supply; outputting a reminder message when the current adjustment ratio of each power supply is the preset minimum adjustment ratio.

9. The power supply control method according to any one of claims 4 to 6, wherein, after reducing the current adjustment ratio of the abnormal power supply, the power supply control method further includes: determining the real-time output voltage of each power supply; determining the power supply corresponding to the maximum real-time output voltage as the main output power supply.

10. The power supply control method according to any one of claims 4 to 6, wherein, after determining the current adjustment ratio of the abnormal power supply, the power supply control method further includes: turning off the abnormal power supply when the current adjustment ratio of the abnormal power supply is the preset minimum adjustment ratio.

11. The power supply control method according to any one of claims 4 to 6, wherein, determining the abnormal power supply according to the power supply state parameters of each power supply includes: respectively comparing the power supply state parameters of each power supply with a preset parameter threshold; determining the power supply whose power supply state parameter is greater than or equal to the parameter threshold as the abnormal power supply.

12. The power supply control method according to claim 11, wherein, after reducing the current adjustment ratio of the abnormal power supply, the power supply control method further includes: restoring the current adjustment ratio of the abnormal power supply when the power supply state parameter of the abnormal power supply is continuously less than the parameter threshold and the continuous duration is greater than a preset duration threshold.

13. The power supply control method according to any one of claims 4 to 12, wherein, the power supply state parameter includes at least one of the following: real-time output voltage, real-time output current, real-time temperature, and real-time power.

14. A power supply control device, wherein, the power supply control device is applied to a control device in the control circuit according to any one of claims 1 to 3. The output voltages of the power supplies in the control circuit are respectively determined by their respective adjustment ratios and a preset reference voltage. The power supply control device includes: an acquisition module, configured to acquire the power supply state parameters of each power supply among the N power supplies; a first determination module, configured to determine an abnormal power supply according to the power supply state parameters of each power supply; a first control module, configured to reduce the current adjustment ratio of the abnormal power supply to control the abnormal power supply to reduce the output voltage according to the reduced current adjustment ratio and the reference voltage.

15. A control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein, When the processor executes the computer program, the method according to any one of claims 4 to 13 is implemented.

16. A computer-readable storage medium storing a computer program, characterized in that when the computer program is executed by a processor, the method according to any one of claims 4 to 13 is implemented.

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