Power supply system

Abstract

The invention provides a power supply system, and relates to the technical field of power supply control, the system comprises at least one power supply distribution subsystem, and each power supply distribution subsystem comprises a power supply distribution unit and two power supply units; the first power supply and the second power supply are connected to each power supply distribution unit; each power supply distribution unit converts alternating current input by the first power supply and the second power supply into direct current, and switches on at least two power supply units corresponding to the first power supply and the power supply distribution unit based on the voltage of the first power supply and the second power supply, so that the first power supply supplies power to the at least two power supply units corresponding to the power supply distribution unit; or the second power supply and the at least two power supply units corresponding to the power distribution unit are conducted, so that the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit. Therefore, the stability of the voltage when the first power supply and the second power supply are mutually switched can be ensured, and the normal operation of the data center server is further ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power supply control, and in particular to a power supply system. BACKGROUND

[0002] As the cornerstone of digital economy, data centers are important infrastructure supporting the development of modern society. However, in the process of rapid expansion of the industry, its energy consumption problem is becoming increasingly serious. In the face of the growing demand for electricity, how to effectively use renewable energy to promote the development of data centers and how to accelerate the realization of green energy transformation have become key challenges faced by current data center construction.

[0003] Due to the constraints of green and renewable energy on environmental factors, there are deficiencies in the stability and sustainability of power supply. Therefore, the power supply scheme of parallel city power and green energy can not only ensure the reliability of data center power supply, but also significantly reduce operating costs. This hybrid power supply mode will cause voltage instability during power switching, thereby affecting the normal operation of data center servers. SUMMARY

[0004] The present disclosure provides a power supply system to at least solve the above technical problems existing in the prior art.

[0005] According to the power supply system of the present disclosure, at least one power distribution subsystem is included, each power distribution subsystem including a power distribution unit (PDU) and two power supply units (PSU);

[0006] The first power supply and the second power supply are connected to each power distribution unit;

[0007] Each power distribution unit converts the alternating current input by the first power supply and the second power supply into direct current, and based on the voltage of the first power supply and the second power supply, turns on the at least two power supply units corresponding to the power distribution unit from the first power supply, so that the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit; or, turns on the at least two power supply units corresponding to the power distribution unit from the second power supply, so that the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit.

[0008] In the above scheme, the power distribution unit includes:

[0009] The first flyback conversion circuit, the second flyback conversion circuit, the ideal diode circuit, the control module, the first double-way controllable electromagnetic valve, and the second double-way controllable electromagnetic valve.

[0010] In the scheme, the first flyback conversion circuit is used to connect to the first power supply, convert the first alternating current input by the first power supply into the first direct current, and input the first direct current into the ideal diode circuit;

[0011] The second flyback conversion circuit is used to connect to the second power supply, convert the second alternating current input by the second power supply into the second direct current, and input the second direct current into the ideal diode circuit;

[0012] The ideal diode circuit is used to, when receiving the first direct current or the second direct current, power on the control module based on the received first direct current or second direct current; or, when receiving the first direct current and the second direct current, prevent the first direct current and the second direct current from interfering with each other, and power on the control module based on any direct current;

[0013] If the ideal diode circuit receives the first direct current, the control module is used to control the first two-way controllable electromagnetic valve to be conductive, so that the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit;

[0014] If the ideal diode circuit receives the second direct current, the control module is used to control the second two-way controllable electromagnetic valve to be conductive, so that the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit.

[0015] In the scheme, the first flyback conversion circuit includes a first transformer, a first rectifier diode, and a first capacitor;

[0016] The first transformer is used to change the voltage size of the first power supply input and store;

[0017] The first rectifier diode is used to convert the first alternating current output by the first transformer into the first direct current, and input the first direct current into the ideal diode circuit;

[0018] The first capacitor is used to smooth the first direct current output by the first rectifier diode.

[0019] In the scheme, the primary side of the first transformer is connected to the live wire and the zero line of the first power supply, respectively;

[0020] The first end of the secondary side of the first transformer is connected to the anode of the first rectifier diode;

[0021] The second end of the secondary side of the first transformer is connected to the ground wire of the first power supply;

[0022] The cathode of the first rectifier diode is connected to the first end of the first capacitor;

[0023] The second end of the first capacitor is connected to the ground wire of the first power supply.

[0024] In the scheme, the power distribution unit further includes a second rectifier diode;

[0025] the positive electrode of the second rectifier diode is connected with the first end of the secondary side of the first transformer, and the negative electrode of the second rectifier diode is connected with the second end of the secondary side of the first transformer;

[0026] in response to the first end of the secondary side of the first transformer outputting the first alternating current, when the positive half cycle of the first alternating current is conducted, the second rectifier diode and the first rectifier diode convert the first alternating current into the first direct current input to the ideal diode circuit; when the negative half cycle of the first alternating current is conducted, the first rectifier diode and the second rectifier diode are cut off to prevent the reverse flow of current.

[0027] In the above scheme, the second flyback conversion circuit comprises a second transformer, a third rectifier diode and a second capacitor.

[0028] the second transformer is used for changing the voltage size of the second power supply input and storing;

[0029] the third rectifier diode is used for converting the second alternating current output by the second transformer into the second direct current input to the ideal diode circuit;

[0030] the second capacitor is used for smoothing the second direct current output by the third rectifier diode.

[0031] In the above scheme, the primary side of the second transformer is connected with the live wire and the zero line of the second power supply respectively.

[0032] the first end of the secondary side of the second transformer is connected with the positive electrode of the third rectifier diode;

[0033] the second end of the secondary side of the second transformer is connected with the ground wire of the second power supply;

[0034] the negative electrode of the third rectifier diode is connected with the first end of the second capacitor;

[0035] the second end of the second capacitor is connected with the ground wire of the second power supply.

[0036] In the above scheme, the power distribution unit further comprises a fourth rectifier diode.

[0037] the positive electrode of the fourth rectifier diode is connected with the first end of the secondary side of the second transformer, and the negative electrode of the fourth rectifier diode is connected with the second end of the secondary side of the second transformer;

[0038] The third rectifier diode and the fourth rectifier diode convert the second alternating current into a second direct current input to the ideal diode circuit when the positive half cycle of the second alternating current is conducted; the third rectifier diode and the fourth rectifier diode are cut off to prevent reverse current flow when the negative half cycle of the second alternating current is conducted.

[0039] In the above scheme, the ideal diode circuit includes a fifth rectifier diode and a sixth rectifier diode.

[0040] The anode of the fifth rectifier diode is connected to the cathode of the first rectifier diode, and the cathode of the fifth rectifier diode is connected to the control module, for conducting the first direct current from the cathode of the first rectifier diode to the control module.

[0041] The anode of the sixth rectifier diode is connected to the cathode of the third rectifier diode, and the cathode of the sixth rectifier diode is connected to the control module, for conducting the second direct current from the cathode of the third rectifier diode to the control module.

[0042] In the above scheme, the control module includes a first detector, a second detector, a time sequence controller, and a switch driver.

[0043] The first detector is connected to the fifth rectifier diode in the ideal diode circuit, for detecting whether there is a first direct current.

[0044] The second detector is connected to the sixth rectifier diode in the ideal diode circuit, for detecting whether there is a second direct current.

[0045] The time sequence controller is connected to the first detector and the second detector respectively, for receiving the detection result of the first detector and / or the second detector, and determining the loop to be conducted based on the detection result of the first detector and / or the second detector.

[0046] The switch driver is connected to the time sequence controller, for controlling the first double-path controllable electromagnetic valve and the second double-path controllable electromagnetic valve based on the loop to be conducted determined by the time sequence controller.

[0047] In the above scheme, the time sequence controller is specifically configured to perform one of the following:

[0048] In response to receiving that the first detector detects the first direct current, a first conduction signal is transmitted to the switch driver, so that the switch controller controls the first double-path controllable electromagnetic valve to be conducted based on the first conduction signal, and the first power supply supplies power to the corresponding at least two power supply units of the power supply distribution unit.

[0049] In response to receiving detection of the second direct current by the second detector and no detection of the first direct current by the first detector, a second conduction signal is transmitted to the switch driver, causing the switch controller to control the second double-controllable electromagnetic valve to conduct based on the second conduction signal, causing the second power supply to supply power to the at least two power supply units corresponding to the power distribution unit;

[0050] In response to receiving detection of the first direct current by the first detector and detection of the second direct current by the second detector, a first conduction signal is transmitted to the switch driver, causing the switch controller to control the first double-controllable electromagnetic valve to conduct based on the first conduction signal, causing the first power supply to supply power to the at least two power supply units corresponding to the power distribution unit.

[0051] In the above scheme, the first double-controllable electromagnetic valve includes a first switch and a second switch; the first switch is used to turn on or turn off the live wire of the first power supply, and the second switch is used to turn on or turn off the neutral wire of the first power supply;

[0052] In response to determining that the first double-controllable electromagnetic valve is turned on based on the switch controller, the first switch and the second switch are controlled to be closed, and the live wire and the neutral wire of the first power supply are turned on.

[0053] In the above scheme, the second double-controllable electromagnetic valve includes a third switch and a fourth switch; the third switch is used to turn on or turn off the live wire of the second power supply, and the fourth switch is used to turn on or turn off the neutral wire of the second power supply;

[0054] In response to determining that the second double-controllable electromagnetic valve is turned on based on the switch controller, the third switch and the fourth switch are controlled to be closed, and the live wire and the neutral wire of the second power supply are turned on.

[0055] In the above scheme, the power distribution unit further includes an anti-power-cut dead zone module;

[0056] The anti-power-cut dead zone module is arranged between the first double-controllable electromagnetic valve and the at least two power supply units, and between the second double-controllable electromagnetic valve and the at least two power supply units;

[0057] The anti-power-cut dead zone module is used for energy storage and discharge when the first power supply and the second power supply are switched with each other.

[0058] In the above scheme, the anti-power-cut dead zone module includes a first magnetic flux coil, a first resistor, a second magnetic flux coil, a second resistor, a third capacitor, a fourth capacitor, and a fifth capacitor.

[0059] In the above scheme, the first end of the first magnetic flux coil is connected to the live wire output end of the first double-controllable electromagnetic valve and the live wire output end of the second double-controllable electromagnetic valve, respectively;

[0060] The second end of the first magnetic flux coil is connected with the live wire input end of the at least two power supply units respectively;

[0061] The first end of the first resistance is connected with the first end of the first magnetic flux coil, and the second end of the first resistance is connected with the second end of the first magnetic flux coil;

[0062] The second end of the first magnetic flux coil is connected with the first end of the third capacitor;

[0063] The second end of the first magnetic flux coil is connected with the first end of the fourth capacitor;

[0064] The second end of the fourth capacitor is connected with the ground wire of the first double-way controllable electromagnetic valve and the ground wire of the second double-way controllable electromagnetic valve respectively.

[0065] In the above scheme, the first end of the second magnetic flux coil is connected with the zero line output end of the first double-way controllable electromagnetic valve and the zero line output end of the second double-way controllable electromagnetic valve respectively;

[0066] The second end of the second magnetic flux coil is connected with the zero line input end of the at least two power supply units respectively;

[0067] The first end of the second resistance is connected with the first end of the second magnetic flux coil, and the second end of the second resistance is connected with the second end of the second magnetic flux coil;

[0068] The second end of the second magnetic flux coil is connected with the second end of the third capacitor;

[0069] The second end of the second magnetic flux coil is connected with the first end of the fifth capacitor;

[0070] The second end of the fifth capacitor is connected with the ground wire of the first double-way controllable electromagnetic valve and the ground wire of the second double-way controllable electromagnetic valve respectively.

[0071] In the above scheme, the first power supply includes one of the following:

[0072] The commercial power supply or the green energy power supply is connected to the power supply system based on the first power distribution cabinet, the second power distribution cabinet and the first uninterruptible power supply distribution module;

[0073] The generator power supply is connected to the power supply system based on the second power distribution cabinet and the first uninterruptible power supply distribution module.

[0074] In the above scheme, the second power supply includes one of the following:

[0075] The commercial power supply or the green energy power supply is connected to the power supply system based on the first power distribution cabinet, the third power distribution cabinet and the second uninterruptible power supply distribution module;

[0076] The generator power supply is connected to the power supply system based on the third power distribution cabinet and the second uninterruptible power supply distribution module.

[0077] The power supply system of the present disclosure comprises at least one power distribution subsystem, each of which comprises a power distribution unit and two power supply units; a first power supply and a second power supply are connected to each power distribution unit; each power distribution unit converts the alternating current input by the first power supply and the second power supply into direct current, and based on the voltage of the first power supply and the second power supply, turns on the at least two power supply units corresponding to the power distribution unit from the first power supply, so as to make the first power supply supply power to the at least two power supply units corresponding to the power distribution unit; or, turns on the at least two power supply units corresponding to the power distribution unit from the second power supply, so as to make the second power supply supply power to the at least two power supply units corresponding to the power distribution unit. In this way, the stability of the voltage when the first power supply and the second power supply are switched can be ensured, and the normal operation of the data center server can be ensured.

[0078] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0079] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0080] In the drawings, identical or corresponding reference numerals indicate identical or corresponding parts.

[0081] Figure 1 An optional schematic diagram of a hybrid power supply scheme is shown;

[0082] Figure 2 A first schematic diagram of a power supply connection method in the related art is shown;

[0083] Figure 3 A second schematic diagram of a power supply connection method in the related art is shown;

[0084] Figure 4 A first optional structural schematic diagram of a power supply system provided by an embodiment of the present disclosure is shown;

[0085] Figure 5 A second optional structural schematic diagram of a power supply system provided by an embodiment of the present disclosure is shown;

[0086] Figure 6 An optional structural schematic diagram of a control module provided by an embodiment of the present disclosure is shown;

[0087] Figure 7 An optional structure schematic diagram of the anti-cut dead zone module is shown.

[0088] Figure 8 A voltage curve schematic diagram of the embodiments of the present disclosure and related art is shown. DETAILED DESCRIPTION

[0089] In order to make the objectives, characteristics and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0090] In the following description, "some embodiments" are described, which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subset of all possible embodiments, and can be combined with each other without conflict.

[0091] In the following description, the term "first\second" is only to distinguish similar objects, and does not represent the specific order of the objects. It can be understood that "first\second" can be interchanged with the specific order or sequence as allowed, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0092] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. The terms used in the present disclosure are only for the purpose of describing the embodiments of the present disclosure, and are not intended to limit the present disclosure.

[0093] It should be understood that in various embodiments of the present disclosure, the size of the serial number of each implementation process does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.

[0094] Figure 1 An optional schematic diagram of the hybrid power supply scheme is shown.

[0095] As Figure 1As shown, at least two power supplies are included in the hybrid power supply scheme. Taking the mains power supply and green energy power supply as examples, when powering the load, dual-bus power supply is adopted, and two buses are used to power the backend device. Each bus has the same set of UPS power supply mode. The dual-bus redundant power supply mode is equivalent to building two sets of power supply circuits, which requires an increase of more than 2 times the cost.

[0096] According to Figure 1 One of the buses is composed of a power supply (mains power supply or green energy power supply), a first power distribution cabinet, a second power distribution cabinet, and a first uninterruptible power supply. The electric energy is connected to the dual-power load from the first power distribution cabinet through the second power distribution cabinet and the first uninterruptible power supply. The other bus is composed of a power supply, a first power distribution cabinet, a third power distribution cabinet, and a second uninterruptible power supply. The electric energy is connected to the dual-power load from the first power distribution cabinet through the third power distribution cabinet and the second uninterruptible power supply.

[0097] Alternatively, if the power supply is a generator power supply, one of the buses is composed of a generator power supply, a second power distribution cabinet, and a first uninterruptible power supply. The other bus is composed of a generator power supply, a third power distribution cabinet, and a second uninterruptible power supply.

[0098] The first power distribution cabinet, the second power distribution cabinet, and the third power distribution cabinet include an automatic transfer switch (AST) for automatically switching power supply between the first power supply (such as mains power supply) and the second power supply (such as generator power supply or uninterruptible power supply (UPS)).

[0099] As shown in Figure 1 The power supply output by the first power distribution cabinet and the generator power supply can be switched based on the second power distribution cabinet or the third power distribution cabinet.

[0100] As shown in Figure 1 When the power supply is connected to the terminal, there are two connection methods. One is dual-power load power supply. The other is rack-type ATS power supply.

[0101] Figure 2 The first kind of schematic diagram of power supply connection method in the related art is shown.

[0102] Figure 2 As shown in the schematic diagram of dual-power load power supply, N+N two groups of power distribution units are used for power supply at the server end (i.e. load end). Each group of PSU can independently support the power supply requirements of the server. This scheme will increase the number of PSUs of the server by one time, greatly increasing the cost of the server. N represents the number of power distribution units, and also the number of power supply units corresponding to each power distribution unit. For example, if 2 PSUs are used at the server end, 4 power supply units are included for power supply of the server.

[0103] Figure 3 A second schematic diagram of a power supply access mode in the related art is shown.

[0104] Figure 3 A schematic diagram of single-load power supply implemented by an ATS is shown. Switching of a power distribution end implemented by the ATS can enable an N+1 redundant power supply switching of a terminal server, that is, one ATS corresponds to N PSU. Since there is no uninterruptible power supply (UPS) standby power between the rack-mounted ATS and the server, the backend load is too large, and a power supply dead zone is easily formed during dual power supply switching, which causes the server to be powered off for a short time and data loss.

[0105] The overall cost of the above two power supply access modes is relatively high. In order to reduce the cost, improve the stability of power supply switching, and increase the application flexibility of the product, the embodiment of the present disclosure provides a power supply system capable of automatic dual power supply switching, which can effectively reduce the cost and will not cause any impact on the existing structure.

[0106] Figure 4 A first optional structure schematic diagram of the power supply system provided by the embodiment of the present disclosure is shown, which will be described according to each part.

[0107] In some embodiments, the power supply system described in the present disclosure is arranged inside a server case (or cabinet) and is used to receive electric energy provided by a commercial power supply, a green energy power supply, or a generator power supply and supply power to each electronic device in the server.

[0108] In some embodiments, the power supply system can include at least one power distribution subsystem. Specifically, the number of power distribution subsystems can be set based on the demand of each electronic device in the server case for electric energy. For example, for electronic devices that require high electric energy, the number of power distribution subsystems is increased; and for electronic devices that require low electric energy, the number of power distribution subsystems is reduced.

[0109] In some embodiments, each power distribution subsystem includes one power distribution unit and two power supply units. The hybrid mode power supply accesses the power distribution unit of each power distribution subsystem through a double bus; each power distribution unit converts alternating current input by the first power supply and the second power supply into direct current, and based on the voltage of the first power supply and the second power supply, turns on at least two power supply units corresponding to the power distribution unit of the first power supply to enable the first power supply to supply power to the at least two power supply units corresponding to the power distribution unit; or turns on at least two power supply units corresponding to the power distribution unit of the second power supply to enable the second power supply to supply power to the at least two power supply units corresponding to the power distribution unit.

[0110] In a specific implementation, if the power distribution unit determines that the voltage of the first power supply is not zero and the voltage of the second power supply is zero, the first power supply and the at least two power supply units corresponding to the power distribution unit are turned on, and the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit; or if the power distribution unit determines that the voltage of the first power supply is zero and the voltage of the second power supply is not zero, the second power supply and the at least two power supply units corresponding to the power distribution unit are turned on, and the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit; or if the power distribution unit determines that the voltage of the first power supply and the voltage of the second power supply are both not zero, the first power supply and the at least two power supply units corresponding to the power distribution unit are turned on, and the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit.

[0111] The first power supply can include a commercial power supply and / or a green energy power supply; and the second power supply can include a generator power supply. The green energy power supply can include a power supply obtained by wind power generation or a power supply obtained by hydraulic power generation.

[0112] Figure 5 A second optional structure schematic diagram of the power supply system provided by the embodiments of the present disclosure is shown, which will be described according to various parts.

[0113] As shown in Figure 5 A structure schematic diagram of the power distribution unit is shown, which includes a first flyback conversion circuit, a second flyback conversion circuit, an ideal diode circuit, a control module, a first double-path controllable electromagnetic valve, and a second double-path controllable electromagnetic valve.

[0114] As shown in Figure 5 The first power supply and the second power supply are shown, in which the lines corresponding to the upper fire wire, the zero wire, and the bottom wire are the first power supply; and the lines corresponding to the lower fire wire, the zero wire, and the bottom wire are the second power supply. The first power supply and the second power supply are independent of each other and are power supplies from different sources.

[0115] In some embodiments, each power supply corresponds to a flyback conversion circuit, i.e., the first power supply corresponds to the first flyback conversion circuit, and the second power supply corresponds to the second flyback conversion circuit; the first flyback conversion circuit and the second flyback conversion circuit are connected with an ideal diode circuit (Oring circuit), which is used to isolate the direct current output by the first flyback conversion circuit and the second flyback conversion circuit; and the control module is powered based on the direct current output by the first flyback conversion circuit and the second flyback conversion circuit. The control module is used to control the first power supply to the load or the second power supply to the load.

[0116] As shown in Figure 5As shown, the first flyback conversion circuit is used to connect to the first power supply, convert the first alternating current input by the first power supply into the first direct current, and input to the ideal diode circuit; Specifically, the first flyback conversion circuit includes a first transformer, the primary side of the first transformer receives the first power supply, and stores energy based on the inductance of the primary side, and then transmits the stored energy to the secondary side through the transformer, and outputs the first direct current after passing through the first rectifier diode, thereby providing working voltage for the control module.

[0117] In specific implementation, the second flyback conversion circuit is used to connect to the second power supply, convert the second alternating current input by the second power supply into the second direct current, and input to the ideal diode circuit; Specifically, the second flyback conversion circuit includes a second transformer, the primary side of the second transformer receives the second power supply, and stores energy based on the inductance of the primary side, and then transmits the stored energy to the secondary side through the transformer, and outputs the second direct current after passing through the third rectifier diode, thereby providing working voltage for the control module.

[0118] In specific implementation, the ideal diode circuit, in the case of power-on of one of the first power supply and the second power supply, conducts the corresponding rectifier diode to supply power to the control module; in the case of power-on of the first power supply and the second power supply at the same time, the ideal diode circuit can prevent mutual interference between the two groups of power supplies, and ensure that only one power supply supplies power to the control module.

[0119] Specifically, when the ideal diode circuit receives the first direct current or the second direct current, the ideal diode circuit is powered based on the received first direct current or second direct current; or, when the ideal diode circuit receives the first direct current and the second direct current, the ideal diode circuit prevents the first direct current and the second direct current from interfering with each other, and is powered based on any direct current; if the ideal diode circuit receives the first direct current, the control module is used to control the first double-way controllable electromagnetic valve to be conducted, so that the first power supply supplies power to the corresponding at least two power supply units of the power supply distribution unit; if the ideal diode circuit receives the second direct current, the control module is used to control the second double-way controllable electromagnetic valve to be conducted, so that the second power supply supplies power to the corresponding at least two power supply units of the power supply distribution unit.

[0120] As shown in the first embodiment, Figure 5 The first flyback conversion circuit includes a first transformer, a first rectifier diode, and a first capacitor. The primary side of the first transformer is connected to the live wire and the zero wire of the first power supply, respectively.

[0121] The first end of the secondary side of the first transformer is connected to the anode of the first rectifier diode; the second end of the secondary side of the first transformer is connected to the ground wire of the first power supply; the cathode of the first rectifier diode is connected to the first end of the first capacitor; and the second end of the first capacitor is connected to the ground wire of the first power supply.

[0122] In specific implementation, the first transformer is used to change and store the voltage of the first power input; the first rectifier diode is used to convert the first AC power output by the first transformer into the first DC power and input it to the ideal diode circuit; the first capacitor is used to smooth the first DC power output by the first rectifier diode.

[0123] In some optional embodiments, the power distribution unit may further include a second rectifier diode, the anode of which is connected to a first terminal of the secondary side of the first transformer, and the cathode of which is connected to a second terminal of the secondary side of the first transformer. In response to the first terminal of the secondary side of the first transformer outputting a first alternating current, during the positive half-cycle of the first alternating current, the second rectifier diode and the first rectifier diode convert the first alternating current into a first direct current input to the ideal diode circuit. During the negative half-cycle of the first alternating current, the first rectifier diode and the second rectifier diode are cut off, preventing the current from flowing in reverse.

[0124] In practical implementation, when the first flyback converter circuit is operating, the secondary side of the first transformer transmits the first alternating current (AC). The second rectifier diode, utilizing its unidirectional conductivity, allows the first AC current to flow in only one direction. Specifically, during the positive half-cycle of the first AC current, the second rectifier diode conducts, allowing the first AC current to pass through. The current flows through the second rectifier diode in an ideal diode circuit. During the negative half-cycle of the first AC current, the second rectifier diode is cut off, preventing the reverse flow of the first AC current. In this way, the first AC current output from the secondary side of the first transformer can be converted into first direct current (DC) to provide a suitable input for subsequent filtering, voltage regulation, and other circuit stages, ultimately providing a stable DC power supply to the load.

[0125] In some embodiments, the first flyback converter circuit may include a switching transistor. When the switching transistor is turned on, the primary side of the first transformer receives and stores energy from the first power supply. At this time, both the first and second rectifier diodes connected to the secondary side are in the off state, and the first capacitor discharges to supply energy to the control module through the ideal diode circuit, maintaining the output voltage. When the switching transistor is turned off, the rectifier diodes are turned on, and the secondary side of the first transformer charges the first capacitor, which stores energy. In addition, the first capacitor can also smooth and filter the first DC power, making the first DC power supplied to the ideal diode more stable.

[0126] like Figure 5 As shown, the second flyback converter circuit includes a second transformer, a third rectifier diode, and a second capacitor. The primary side of the second transformer is connected to both the live wire and the neutral wire of the second power supply.

[0127] The first end of the secondary side of the second transformer is connected with the anode of the third rectifier diode; the second end of the secondary side of the second transformer is connected with the ground of the second power supply; the cathode of the third rectifier diode is connected with the first end of the second capacitor; and the second end of the second capacitor is connected with the ground of the second power supply.

[0128] In particular implementation, the second transformer is configured to change the voltage of the second power supply input and store; the third rectifier diode is configured to convert the second alternating current output by the second transformer into the second direct current and input into the ideal diode circuit; and the second capacitor is configured to smooth the second direct current output by the third rectifier diode.

[0129] In some optional embodiments, the power distribution unit can further include a fourth rectifier diode, the anode of the fourth rectifier diode is connected with the first end of the secondary side of the second transformer, and the cathode of the fourth rectifier diode is connected with the second end of the secondary side of the second transformer; in response to the first end of the secondary side of the second transformer outputting the second alternating current, when the positive half cycle of the second alternating current is conducted, the fourth rectifier diode and the third rectifier diode convert the second alternating current into the second direct current and input into the ideal diode circuit; and when the negative half cycle of the second alternating current is conducted, the third rectifier diode and the fourth rectifier diode are cut off to prevent the reverse flow of current.

[0130] In particular implementation, when the second flyback conversion circuit is working, the secondary side of the second transformer transmits the second alternating current. The fourth rectifier diode utilizes the one-way conductivity of itself to allow the current of the second alternating current to pass in one direction only. Specifically, when the positive half cycle of the second alternating current is conducted, the fourth rectifier diode is conducted, and the second alternating current can pass from the fourth rectifier diode to the ideal diode circuit; when the negative half cycle of the second alternating current is conducted, the fourth rectifier diode is cut off to prevent the reverse flow of the second alternating current. In this way, the second alternating current output by the secondary side of the second transformer can be converted into the second direct current to provide suitable input for subsequent circuit links such as filtering and voltage stabilization, and finally provide stable direct current power for the load.

[0131] In some embodiments, the second flyback conversion circuit can include a switch tube, when the switch tube is conducted, the primary side of the second transformer receives the second power supply and stores energy; at this time, the third rectifier diode and the fourth rectifier diode connected to the secondary side are both in cut-off state, the second capacitor discharges to supply energy to the control module through the ideal diode circuit to maintain the output voltage; when the switch tube is cut off, the third rectifier diode and the fourth rectifier diode are conducted, the secondary side of the second transformer charges the second capacitor, and the second capacitor stores energy. In addition, the second capacitor can also smooth filter the second direct current to make the second direct current transmitted to the ideal diode more stable.

[0132] In some embodiments, the first capacitor and the second capacitor can ensure that the first power supply and the second power supply provide power continuously to the control module when switching, such as from a state of the first power supply providing power and the second power supply stopping power to a state of the first power supply stopping power and the second power supply providing power.

[0133] As shown in Figure 5 The ideal diode circuit includes a fifth rectifier diode and a sixth rectifier diode; the positive electrode of the fifth rectifier diode is connected with the negative electrode of the first rectifier diode, the negative electrode of the fifth rectifier diode is connected with the control module, for conducting the first direct current from the negative electrode of the first rectifier diode to the control module; the positive electrode of the sixth rectifier diode is connected with the negative electrode of the third rectifier diode, the negative electrode of the sixth rectifier diode is connected with the control module, for conducting the second direct current from the negative electrode of the third rectifier diode to the control module.

[0134] Figure 6 An optional structure schematic diagram of the control module provided by the embodiments of the present disclosure is shown, which will be described according to various parts.

[0135] In some embodiments, the control module includes a first detector, a second detector, a timing controller, and a switch driver; the first detector is connected with the fifth rectifier diode in the ideal diode circuit, for detecting whether there is the first direct current; the second detector is connected with the sixth rectifier diode in the ideal diode circuit, for detecting whether there is the second direct current; the timing controller is connected with the first detector and the second detector respectively, for receiving the detection results of the first detector and / or the second detector, and determining the circuit to be turned on based on the detection results of the first detector and / or the second detector; the switch driver is connected with the timing controller, for controlling the first double-path controllable electromagnetic valve and the second double-path controllable electromagnetic valve based on the circuit to be turned on determined by the timing controller.

[0136] In some embodiments, in response to receiving that the first detector detects the first direct current, the timing controller transmits a first conduction signal to the switch driver, so that the switch controller controls the first double-path controllable electromagnetic valve to be turned on based on the first conduction signal, and the first power supply supplies power to the corresponding at least two power supply units of the power supply distribution unit;

[0137] In some embodiments, in response to receiving that the second detector detects the second direct current and the first detector does not detect the first direct current, the timing controller transmits a second conduction signal to the switch driver, so that the switch controller controls the second double-path controllable electromagnetic valve to be turned on based on the second conduction signal, and the second power supply supplies power to the corresponding at least two power supply units of the power supply distribution unit;

[0138] In some embodiments, the timing controller transmits a first conduction signal to the switch driver in response to receiving that the first detector detects the first direct current and receiving that the second detector detects the second direct current, so as to control the first two-way controllable electromagnetic valve to conduct based on the first conduction signal, and control the first power supply to supply power to the corresponding at least two power supply units of the power distribution unit.

[0139] In some embodiments, as shown in Figure 5 the first two-way controllable electromagnetic valve includes a first switch and a second switch; the first switch is used to turn on or turn off the live wire of the first power supply, and the second switch is used to turn on or turn off the zero line of the first power supply; wherein the first switch and the second switch are turned on or turned off at the same time.

[0140] In some embodiments, in response to determining that the first two-way controllable electromagnetic valve is turned on based on the switch controller, the first switch and the second switch are controlled to be turned on, and the live wire and the zero line of the first power supply are turned on. The electrical energy of the first power supply is transmitted to the anti-cutting dead zone module.

[0141] In some embodiments, as shown in Figure 5 the second two-way controllable electromagnetic valve includes a third switch and a fourth switch; the third switch is used to turn on or turn off the live wire of the second power supply, and the fourth switch is used to turn on or turn off the zero line of the second power supply; wherein the third switch and the fourth switch are turned on or turned off at the same time.

[0142] In response to determining that the second two-way controllable electromagnetic valve is turned on based on the switch controller, the third switch and the fourth switch are controlled to be turned on, and the live wire and the zero line of the second power supply are turned on.

[0143] In some optional embodiments, the power distribution unit further includes an anti-cutting dead zone module.

[0144] Figure 7 An optional structural schematic diagram of the anti-cutting dead zone module provided by the embodiments of the present disclosure is shown.

[0145] As shown in Figure 7 the anti-cutting dead zone module includes a first magnetic flux coil, a first resistor, a second magnetic flux coil, a second resistor, a third capacitor, a fourth capacitor, and a fifth capacitor.

[0146] In some embodiments, the first end of the first magnetic flux coil is connected to the fire wire output end of the first double-way controllable electromagnetic valve and the fire wire output end of the second double-way controllable electromagnetic valve respectively; the second end of the first magnetic flux coil is connected to the fire wire input end of the at least two power supply units respectively; the first end of the first resistor is connected to the first end of the first magnetic flux coil, and the second end of the first resistor is connected to the second end of the first magnetic flux coil; the second end of the first magnetic flux coil is connected to the first end of the third capacitor; the second end of the first magnetic flux coil is connected to the first end of the fourth capacitor; the second end of the fourth capacitor is connected to the ground wire of the first double-way controllable electromagnetic valve and the ground wire of the second double-way controllable electromagnetic valve respectively.

[0147] In some embodiments, the first end of the first magnetic flux coil is connected to the fire wire output end of the first double-way controllable electromagnetic valve and the fire wire output end of the second double-way controllable electromagnetic valve respectively; the second end of the first magnetic flux coil is connected to the fire wire input end of the at least two power supply units respectively; the first end of the first resistor is connected to the first end of the first magnetic flux coil, and the second end of the first resistor is connected to the second end of the first magnetic flux coil; the second end of the first magnetic flux coil is connected to the first end of the third capacitor; the second end of the first magnetic flux coil is connected to the first end of the fourth capacitor; the second end of the fourth capacitor is connected to the ground wire of the first double-way controllable electromagnetic valve and the ground wire of the second double-way controllable electromagnetic valve respectively.

[0148] In some embodiments, the anti-cutting power dead zone module can have a delay buffer and energy storage discharge effect when the first power supply and the second power supply are switched, so as to ensure that the double power supply does not have a power failure phenomenon at the extremely short time point of switching.

[0149] In specific implementation, the anti-cutting power dead zone module is composed of a resistor (first resistor or second resistor), an energy storage capacitor (third capacitor, fourth capacitor and fifth capacitor) and a magnetic flux coil (first magnetic flux coil and second magnetic flux coil), and each of the fire wire and zero wire circuits is added with a set of RCL (including a magnetic flux coil, a corresponding resistor and a capacitor). In the normal path, the current passes through the magnetic flux coil, and the magnetic flux coil and the capacitor store energy; when the power supply is switched, the current passes through the resistor by using the magnetic flux coil passing through the straight gap, at this time the magnetic flux coil starts to release the stored energy, and the resistor and the capacitor delay discharge.

[0150] The magnetic flux potential of the magnetic flux coil is the line integral of the magnetic field strength closed path, which is a measure of the magnetic effect of the current in the coil, and is equal to the product of the coil and the current. If there is more than one coil, the magnetic flux potential is equal to the sum of each coil.

[0151] In some embodiments, the energy storage amount of the magnetic flux coil Where E is the energy stored by the magnetic flux coil, L is the inductance value, and I is the current value passing through the inductance.

[0152] The voltage across the inductance wherein, is the rate of change of current, and t1 is the time for the inductor to store or release energy.

[0153] The integral expression of the energy transfer of the inductor is E(t) = ∫P x dt = ∫V x I x dt1; P is the product of the voltage and the current passing through the inductor.

[0154] The formula for the energy storage of the capacitor is:

[0155] The relationship between the capacitor current and the rate of change of voltage is:

[0156] The integral expression of the energy transfer of the capacitor is W c = ∫V x I x dt2.

[0157] In some optional embodiments, t1 + t2 ≥ 7 ms can be set. That is, the sum of the energy transfer time (t1, such as the energy storage or release stage) of the inductor and the charging and discharging time (t2) of the capacitor needs to be greater than or equal to 7 ms.

[0158] Figure 8 The voltage curve schematic diagrams of the embodiments of the present disclosure and the related art are shown.

[0159] As shown in FIG. 3, Figure 8 the horizontal axis is time, and the vertical axis is the load voltage. The dashed line is the voltage change curve of the load side (i.e., the server side) when the power supply switching scheme in the related art is performing power supply switching; and the solid line is the voltage change curve of the load side when the power supply system provided by the embodiments of the present disclosure is performing power supply switching.

[0160] As shown in FIG. 3, Figure 8 when the power supply switching in the related art is performed, there is a significant drop in voltage; but when the power supply switching is performed based on the power supply system provided by the embodiments of the present disclosure, the voltage change curve of the load side is smooth.

[0161] It should be understood that the various forms of the flow shown above can be reordered, added, or deleted. For example, the steps described in the present disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.

[0162] The above is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A power supply system characterized by comprising: The system comprises at least one power distribution subsystem, each of which comprises a power distribution unit and two power supply units; The first power supply and the second power supply are connected to each power distribution unit; Each power distribution unit converts the alternating current input by the first power supply and the second power supply into direct current, and based on the voltage of the first power supply and the second power supply, turns on the at least two power supply units corresponding to the power distribution unit from the first power supply, so that the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit; or turns on the at least two power supply units corresponding to the power distribution unit from the second power supply, so that the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit.

2. The system of claim 1, wherein, The power distribution unit comprises: a first flyback conversion circuit, a second flyback conversion circuit, an ideal diode circuit, a control module, a first double-way controllable electromagnetic valve and a second double-way controllable electromagnetic valve.

3. The system of claim 2, wherein the first flyback conversion circuit is configured to be connected to the first power supply, convert the first alternating current input by the first power supply into first direct current, and input the first direct current to the ideal diode circuit; the second flyback conversion circuit is configured to be connected to the second power supply, convert the second alternating current input by the second power supply into second direct current, and input the second direct current to the ideal diode circuit; the ideal diode circuit is configured to, when receiving the first direct current or the second direct current, power up the control module based on the received first direct current or second direct current; or, when receiving the first direct current and the second direct current, prevent the first direct current and the second direct current from interfering with each other, and power up the control module based on any direct current; if the ideal diode circuit receives the first direct current, the control module is configured to control the first double-way controllable electromagnetic valve to be turned on, so that the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit; if the ideal diode circuit receives the second direct current, the control module is configured to control the second double-way controllable electromagnetic valve to be turned on, so that the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit.

4. The system of claim 2, wherein, The first flyback conversion circuit comprises a first transformer, a first rectifier diode and a first capacitor; the first transformer is configured to change the voltage of the first power supply and store; the first rectifier diode is configured to convert the first alternating current output by the first transformer into first direct current, and input the first direct current to the ideal diode circuit; the first capacitor is configured to smooth the first direct current output by the first rectifier diode.

5. The system of claim 4, wherein a primary side of the first transformer is connected to the live wire and the zero wire of the first power supply, respectively; a first end of a secondary side of the first transformer is connected to the anode of the first rectifier diode; a second end of the secondary side of the first transformer is connected to the ground wire of the first power supply; the cathode of the first rectifier diode is connected to a first end of the first capacitor; a second end of the first capacitor is connected to the ground wire of the first power supply.

6. The system of claim 5, wherein, The power distribution unit further comprises a second rectifier diode; The positive electrode of the second rectifier diode is connected with the first end of the secondary side of the first transformer, and the negative electrode of the second rectifier diode is connected with the second end of the secondary side of the first transformer. In response to the first end of the secondary side of the first transformer outputting the first alternating current, when the positive half cycle of the first alternating current is conducted, the second rectifier diode and the first rectifier diode convert the first alternating current into the first direct current input to the ideal diode circuit; when the negative half cycle of the first alternating current is conducted, the first rectifier diode and the second rectifier diode are cut off to prevent the reverse flow of current.

7. The system of claim 2, wherein, The second flyback conversion circuit includes a second transformer, a third rectifier diode and a second capacitor. The second transformer is used to change the voltage size of the second power supply input and store; The third rectifier diode is used to convert the second alternating current output by the second transformer into the second direct current input to the ideal diode circuit; The second capacitor is used to smooth the second direct current output by the third rectifier diode.

8. The system of claim 7, wherein The primary side of the second transformer is connected to the live wire and the zero line of the second power supply respectively; The first end of the secondary side of the second transformer is connected with the positive electrode of the third rectifier diode; The second end of the secondary side of the second transformer is connected with the ground wire of the second power supply; The negative electrode of the third rectifier diode is connected with the first end of the second capacitor; The second end of the second capacitor is connected with the ground wire of the second power supply.

9. The system of claim 8, wherein, The power distribution unit further includes a fourth rectifier diode; The positive electrode of the fourth rectifier diode is connected with the first end of the secondary side of the second transformer, and the negative electrode of the fourth rectifier diode is connected with the second end of the secondary side of the second transformer; In response to the first end of the secondary side of the second transformer outputting the second alternating current, when the positive half cycle of the second alternating current is conducted, the third rectifier diode and the fourth rectifier diode convert the second alternating current into the second direct current input to the ideal diode circuit; when the negative half cycle of the second alternating current is conducted, the third rectifier diode and the fourth rectifier diode are cut off to prevent the reverse flow of current.

10. The system of claim 2, wherein, The ideal diode circuit includes a fifth rectifier diode and a sixth rectifier diode; The positive electrode of the fifth rectifier diode is connected with the negative electrode of the first rectifier diode, and the negative electrode of the fifth rectifier diode is connected with the control module, for conducting the first direct current from the negative electrode of the first rectifier diode to the control module; The positive electrode of the sixth rectifier diode is connected with the negative electrode of the third rectifier diode, and the negative electrode of the sixth rectifier diode is connected with the control module, for conducting the second direct current from the negative electrode of the third rectifier diode to the control module.

11. The system of claim 2, wherein, The control module includes a first detector, a second detector, a time sequence controller and a switch driver; The first detector is connected with the fifth rectifier diode in the ideal diode circuit, for detecting whether there is the first direct current; The second detector is connected with the sixth rectifier diode in the ideal diode circuit, for detecting whether there is the second direct current; The time sequence controller is connected with the first detector and the second detector, for controlling the switch driver to output the first direct current and the second direct current to the control module according to the detection results of the first detector and the second detector. The timing controller is connected with the first detector and the second detector respectively, and is configured to receive detection results of the first detector and / or the second detector, and determine the conducting loop based on the detection results of the first detector and / or the second detector. The switch driver is connected with the timing controller, and is configured to control the first double-path controllable electromagnetic valve and the second double-path controllable electromagnetic valve based on the conducting loop determined by the timing controller.

12. The system of claim 11, wherein, The timing controller is specifically configured to perform one of the following: In response to receiving that the first detector detects the first direct current, the timing controller transmits a first conducting signal to the switch driver, so that the switch controller controls the first double-path controllable electromagnetic valve to conduct based on the first conducting signal, and the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit; In response to receiving that the second detector detects the second direct current and the first detector does not detect the first direct current, the timing controller transmits a second conducting signal to the switch driver, so that the switch controller controls the second double-path controllable electromagnetic valve to conduct based on the second conducting signal, and the second power supply supplies power to the at least two power supply units corresponding to the power distribution unit; In response to receiving that the first detector detects the first direct current and the second detector detects the second direct current, the timing controller transmits a first conducting signal to the switch driver, so that the switch controller controls the first double-path controllable electromagnetic valve to conduct based on the first conducting signal, and the first power supply supplies power to the at least two power supply units corresponding to the power distribution unit.

13. The system of claim 2, wherein The first double-path controllable electromagnetic valve comprises a first switch and a second switch, the first switch is configured to conduct or disconnect a live wire of the first power supply, and the second switch is configured to conduct or disconnect a zero line of the first power supply; In response to determining that the first double-path controllable electromagnetic valve conducts based on the switch controller, the first switch and the second switch are controlled to be closed to conduct the live wire and the zero line of the first power supply.

14. The system of claim 2, wherein The second double-path controllable electromagnetic valve comprises a third switch and a fourth switch, the third switch is configured to conduct or disconnect a live wire of the second power supply, and the fourth switch is configured to conduct or disconnect a zero line of the second power supply; In response to determining that the second double-path controllable electromagnetic valve conducts based on the switch controller, the third switch and the fourth switch are controlled to be closed to conduct the live wire and the zero line of the second power supply.

15. The system of claim 2, wherein, The power distribution unit further comprises an anti-cutting power dead zone module; The anti-cutting power dead zone module is arranged between the first double-path controllable electromagnetic valve and the at least two power supply units, and between the second double-path controllable electromagnetic valve and the at least two power supply units; The anti-cutting power dead zone module is configured to store energy and discharge energy when the first power supply and the second power supply are switched with each other.

16. The system of claim 15, wherein, The anti-cutting power dead zone module comprises a first magnetic flux coil, a first resistor, a second magnetic flux coil, a second resistor, a third capacitor, a fourth capacitor, and a fifth capacitor.

17. The system of claim 16, wherein A first end of the first magnetic flux coil is connected with a live wire output end of the first double-path controllable electromagnetic valve and a live wire output end of the second double-path controllable electromagnetic valve respectively. The second end of the first magnetic flux coil is connected with the live wire input end of the at least two power supply units respectively; The first end of the first resistance is connected with the first end of the first magnetic flux coil, and the second end of the first resistance is connected with the second end of the first magnetic flux coil; The second end of the first magnetic flux coil is connected with the first end of the third capacitor; The second end of the first magnetic flux coil is connected with the first end of the fourth capacitor; The second end of the fourth capacitor is connected with the ground wire of the first double-way controllable electromagnetic valve and the ground wire of the second double-way controllable electromagnetic valve respectively.

18. The system of claim 16, wherein, The first end of the second magnetic flux coil is connected with the zero line output end of the first double-way controllable electromagnetic valve and the zero line output end of the second double-way controllable electromagnetic valve respectively; The second end of the second magnetic flux coil is connected with the zero line input end of the at least two power supply units respectively; The first end of the second resistance is connected with the first end of the second magnetic flux coil, and the second end of the second resistance is connected with the second end of the second magnetic flux coil; The second end of the second magnetic flux coil is connected with the second end of the third capacitor; The second end of the second magnetic flux coil is connected with the first end of the fifth capacitor; The second end of the fifth capacitor is connected with the ground wire of the first double-way controllable electromagnetic valve and the ground wire of the second double-way controllable electromagnetic valve respectively.

19. The system of claim 1, wherein, The first power supply includes one of: The mains power supply or the green energy power supply is connected to the power supply system based on the first power distribution cabinet, the second power distribution cabinet and the first uninterruptible power supply distribution module; The generator power supply is connected to the power supply system based on the second power distribution cabinet and the first uninterruptible power supply distribution module.

20. The system of claim 1, wherein, The second power supply includes one of: The mains power supply or the green energy power supply is connected to the power supply system based on the first power distribution cabinet, the third power distribution cabinet and the second uninterruptible power supply distribution module; The generator power supply is connected to the power supply system based on the third power distribution cabinet and the second uninterruptible power supply distribution module.

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