Power supply system and control method thereof, container data center

Abstract

The present invention provides a power supply system and a control method thereof, as well as a container data center. The power supply system includes: a first converter, connected to a first power source and a load, respectively; a second converter, connected to a second power source, a first power source, and a load, respectively; a control device, connected to the first converter and the second converter, respectively, for controlling the second converter to supply power to the load with the second power source when the second power utilization efficiency is greater than the first power utilization efficiency; otherwise, controlling the second converter to supply power to the first power source with the second power source; wherein the first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; and the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone. The present invention can improve the power utilization efficiency of a container data center when dual power sources are used.

Description

Technical Field

[0001] The present invention relates to the field of electrical engineering technology, and in particular to a power supply system and a control method thereof, and a container data center. Background Art

[0002] With the rapid development of the electronic information industry, the development of data centers has entered a new stage. Among them, container data centers are widely used by enterprises due to their advantages such as fast construction speed, strong environmental adaptability, and ability to accommodate high-density computing equipment.

[0003] Because container data centers often rely on dual power sources, such as a combination of mains power and renewable energy sources, due to the high power requirements of the loads within them. However, current solutions for combining mains power and renewable energy sources suffer from low utilization efficiency of the energy generated by renewable energy sources. Summary of the Invention

[0004] The present invention provides a power supply system and a control method thereof, and a container data center, which can improve the power utilization efficiency of the container data center when dual power supplies are used.

[0005] In a first aspect, the present invention provides a power supply system, comprising: a first converter, connected to a first power supply and a load, respectively; a second converter, connected to the second power supply, the first power supply and the load, respectively; a control device, connected to the first converter and the second converter, respectively, for controlling the second converter to supply power to the load with the second power supply when the second power utilization efficiency is greater than the first power utilization efficiency; otherwise, controlling the second converter to supply power to the first power supply with the second power supply; wherein the first power utilization efficiency is the power utilization efficiency when power is supplied to the load alone through the first converter; and the second power utilization efficiency is the power utilization efficiency when power is supplied to the load alone through the second converter.

[0006] The power supply system provided by the present invention compares the energy utilization efficiency of a first converter and a second converter during power supply. When the energy utilization efficiency of the second converter is greater than that of the first converter, the second power source is selected to supply power to the load through the second converter. Otherwise, the second converter is controlled to supply power to the second power source from the first power source, so that the first power source can supply power to the load through the first converter. While ensuring normal power supply to the load, the power provided by the second power source is fully utilized, improving the energy utilization efficiency of the second power source, thereby improving the energy utilization efficiency of the power supply system as a whole, and further improving the energy utilization efficiency of the container data center when powered by dual power sources.

[0007] In one possible implementation, the power supply system also includes: a battery, connected to the first converter and the second converter respectively; a control device, specifically used to, when the second power utilization efficiency is greater than the first power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, control the second converter to supply power to the battery with the output power; if the output power of the second converter is greater than the charging power of the battery and less than or equal to the sum of the charging power of the battery and the required power of the load, control the second converter to supply power to the battery with the charging power of the battery and to supply power to the load with the first surplus power; if the output power of the second converter is greater than the sum of the charging power of the battery and the required power of the load, control the second converter to supply power to the battery with the charging power of the battery, to supply power to the load with the required power of the load, and to supply power to the first power source with the second surplus power; wherein the first surplus power is the difference between the output power and the charging power of the battery, and the second surplus power is the difference between the output power and the sum of the charging power of the battery and the required power of the load.

[0008] In one possible implementation, the control device is specifically used to: when the first power utilization efficiency is less than or equal to the second power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, control the second converter to supply power to the battery with the output power; if the output power of the second converter is greater than the charging power of the battery, control the second converter to supply power to the battery with the charging power of the battery, and supply power to the first power source with the first residual power.

[0009] In a possible implementation, the control device is further configured to: detect the operating state of the second power supply; and if the second power supply is in a normal state, determine the magnitude relationship between the first power utilization efficiency and the second power utilization efficiency.

[0010] In one possible implementation, the control device is also used to: if the second power supply is in a power-off state and the first power supply is in a normal state, control the first converter to supply power to the load; if the second power supply is in a power-off state and the first power supply is in a power-off state, control the battery of the power supply system to supply power to the load through the first converter or the second converter.

[0011] In one possible implementation, the control device is specifically used to: when the first power utilization efficiency is greater than the second power utilization efficiency, control the battery of the power supply system to supply power to the load through the first converter; when the first power utilization efficiency is less than or equal to the second power utilization efficiency, control the battery of the power supply system to supply power to the load through the second converter.

[0012] In a possible implementation, the first power supply is a mains power supply, the second power supply is a new energy power generation device, the first converter is an uninterruptible power supply UPS, and the second converter is a DC converter.

[0013] In second aspect, an embodiment of the present invention provides a control method for a power supply system, which includes a first converter, a second converter and a control device; the first converter is connected to the first power supply and the load, respectively; the second converter is connected to the second power supply, the first power supply and the load, respectively; the control device is connected to the first converter and the second converter, respectively; the method includes: when the second power utilization efficiency is greater than the first power utilization efficiency, controlling the second converter to supply power to the load with the second power supply; otherwise, controlling the second converter to supply power to the first power supply with the second power supply; wherein the first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone.

[0014] In one possible implementation, when the second power utilization efficiency is greater than the first power utilization efficiency, the second converter is controlled to supply power to the load with the second power source, including: when the second power utilization efficiency is greater than the first power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, the second converter is controlled to supply power to the battery with the output power; if the output power of the second converter is greater than the charging power of the battery and less than or equal to the sum of the charging power of the battery and the required power of the load, the second converter is controlled to supply power to the battery with the charging power of the battery and to supply power to the load with the first surplus power; if the output power of the second converter is greater than the sum of the charging power of the battery and the required power of the load, the second converter is controlled to supply power to the battery with the charging power of the battery, to supply power to the load with the required power of the load, and to supply power to the first power source with the second surplus power; wherein the first surplus power is the difference between the output power and the charging power of the battery, and the second surplus power is the difference between the output power and the sum of the charging power of the battery and the required power of the load.

[0015] In one possible implementation, when the first power utilization efficiency is less than or equal to the second power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, the second converter is controlled to supply power to the battery with the output power; if the output power of the second converter is greater than the charging power of the battery, the second converter is controlled to supply power to the battery with the charging power of the battery, and to supply power to the first power source with the first residual power.

[0016] In a possible implementation, the method further includes: detecting the operating state of the second power supply; and if the second power supply is in a normal state, determining the magnitude relationship between the first power utilization efficiency and the second power utilization efficiency.

[0017] In one possible implementation, the method further includes: if the second power supply is in a power-off state and the first power supply is in a normal state, controlling the first converter to supply power to the load; if the second power supply is in a power-off state and the first power supply is in a power-off state, controlling the battery of the power supply system to supply power to the load through the first converter or the second converter.

[0018] In one possible implementation, the battery of the power supply system is controlled to supply power to the load through the first converter or the second converter, including: when the first power utilization efficiency is greater than the second power utilization efficiency, the battery of the power supply system is controlled to supply power to the load through the first converter; when the first power utilization efficiency is less than or equal to the second power utilization efficiency, the battery of the power supply system is controlled to supply power to the load through the second converter.

[0019] In a possible implementation, the first power supply is a mains power supply, the second power supply is a new energy power generation device, the first converter is an uninterruptible power supply UPS, and the second converter is a DC converter.

[0020] In a third aspect, an embodiment of the present invention provides a control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in the first aspect or any possible implementation of the first aspect when executing the computer program.

[0021] In a fourth aspect, an embodiment of the present invention provides a container data center, characterized in that the container data center includes the power supply system as described in the first aspect or any possible implementation of the first aspect.

[0022] In one possible implementation, the container data center also includes a second power supply, which includes photovoltaic modules. The photovoltaic modules are installed on the frame of the container data center to form the upper wall and side walls of the container data center. The photovoltaic modules are composed of tempered glass, photovoltaic panels, photovoltaic module circuits, and interior panels from the outside to the inside.

[0023] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the method described in the first aspect or any possible implementation of the first aspect.

[0024] The descriptions of the second to fifth aspects of the present invention can refer to the detailed description of the first aspect; and the beneficial effects of the descriptions of the second to fifth aspects can refer to the analysis of the beneficial effects of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the architecture of a power supply solution for a container data center provided by an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the architecture of a power supply system for a container data center provided by an embodiment of the present invention;

[0028] Figure 3 This is a flow chart of a method for controlling a power supply system provided by an embodiment of the present invention;

[0029] Figure 4 is a flow chart of another power supply system control method provided by an embodiment of the present invention;

[0030] Figure 5 is a structural diagram of a control device provided by an embodiment of the present invention;

[0031] Figure 6 It is a structural diagram of another control device provided by an embodiment of the present invention.

[0032] Figure 7 is a schematic diagram of a container data center provided by an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of a photovoltaic module for a container data center provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0035] In the description of the present invention, unless otherwise specified, “ / ” means “or”. For example, A / B can mean A or B. “And / or” in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, “at least one” and “a plurality of” refer to two or more. Words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.

[0036] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0037] Furthermore, the terms "including," "having," and any variations thereof, as used in the description of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or modules is not limited to the listed steps or modules, but may optionally include other steps or modules not listed, or may optionally include other steps or modules inherent to the process, method, product, or apparatus.

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following will be described through specific embodiments in conjunction with the accompanying drawings of the present invention.

[0039] like Figure 1 As shown, a power supply solution for container data centers currently exists. In this solution, a mains power source 101 supplies power to a container data center 106 via a busbar 104 and an uninterruptible power supply (UPS). When generating electricity, photovoltaic panels 102 are connected to busbar 104 via inverter 103, enabling grid connection. When generating electricity, photovoltaic panels 102 are grid-connected to busbar 104 and supply power to container data center 106 via UPS 105. This solution utilizes the power generated by photovoltaic panels 102, reducing the load on the mains power source.

[0040] for Figure 1In the dual-power supply scenario shown, photovoltaic power generation and mains power are used in conjunction. The electricity generated by photovoltaic panels 102 must pass through inverter 103, busbar 104, and UPS before it can be supplied to the loads in container data center 106. This process requires multiple conversions, which consume electricity and result in low utilization efficiency of the electricity generated by photovoltaic panels 102.

[0041] In order to solve the above technical problems, Figure 2 As shown, an embodiment of the present invention provides a power supply system 200 comprising a first converter 202 connected to a first power source 201 and a load 206, and a second converter 204 connected to a second power source 203, the first power source 201, and the load 206.

[0042] In some embodiments, the first power supply 201 may be a mains power supply, the first converter 202 may be an uninterruptible power supply UPS, the second power supply 203 may be a new energy power generation device, and the second converter 204 may be a DC converter.

[0043] In some embodiments, the new energy power generation device is used to convert renewable energy into electrical energy and send the generated electrical energy to a DC converter.

[0044] Illustratively, the new energy power generation device may be a photovoltaic module for converting solar energy into electrical energy.

[0045] As another example, the new energy power generation device may also be a wind turbine for converting wind energy into electrical energy.

[0046] In the embodiment of the present application, the power supply system 200 further includes a control device 207 connected to the first converter 202 and the second converter 204 respectively.

[0047] In an embodiment of the present application, the control device 207 is used to control the second converter to supply power to the load with the second power supply when the second power utilization efficiency is greater than the first power utilization efficiency; otherwise, control the second converter to supply power to the first power supply with the second power supply.

[0048] The first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone.

[0049] It should be noted that the second power utilization efficiency is greater than the first power utilization efficiency, indicating that the power utilization efficiency is higher when the second converter supplies power to the load. The control device can control the second converter to supply power to the load via the second power source. The second power utilization efficiency is less than or equal to the first power utilization efficiency, indicating that the power utilization efficiency is higher when the first converter supplies power to the load. The control device can control the second converter to supply power to the first power source via the second power source.

[0050] In some embodiments, load 206 is the load of a container data center. The load includes DC load and AC load. The proportion of DC load to AC load changes over time. For example, during the first detection, the DC load accounts for 40% and the AC load accounts for 60%. During the second detection, the DC load accounts for 70% and the AC load accounts for 30%.

[0051] It is understandable that due to the different proportions of DC loads and AC loads in the load, the first power utilization efficiency and the second power utilization efficiency will also change accordingly. The power supply system provided by the embodiment of the present invention can determine whether to use the first power supply or the second power supply based on the relationship between the second power utilization efficiency and the first power utilization efficiency. In other words, the converter with higher power utilization efficiency is selected to power the load, adapting to the ever-changing load requirements and improving the power utilization efficiency of the dual power supply system.

[0052] In some embodiments, when the container data center operates stably and the second power source meets both the charging requirements of the battery and the power requirements of the load, the control device can detect the first power utilization efficiency and the second power utilization efficiency.

[0053] Exemplarily, the control device may disconnect the first converter from the load, supply power to the load solely through the second converter, and detect the first power utilization efficiency.

[0054] Exemplarily, the control device may disconnect the second converter from the load, supply power to the load solely through the first converter, and detect the second power utilization efficiency.

[0055] As a possible implementation, the control device may periodically detect the first power utilization efficiency and the second power utilization efficiency. For example, the control device detects once every 10 days, or once every 15 days, which is not limited to this.

[0056] As another possible implementation manner, the control device may further detect the first power utilization efficiency and the second power utilization efficiency when receiving indication information indicating a load change.

[0057] The power supply system provided by the present invention compares the energy utilization efficiency of a first converter and a second converter during power supply. When the energy utilization efficiency of the second converter is greater than that of the first converter, the second power source is selected to supply power to the load through the second converter. Otherwise, the second converter is controlled to supply power to the second power source from the first power source, so that the first power source can supply power to the load through the first converter. While ensuring normal power supply to the load, the power provided by the second power source is fully utilized, improving the energy utilization efficiency of the second power source, thereby improving the energy utilization efficiency of the power supply system as a whole, and further improving the energy utilization efficiency of the container data center when powered by dual power sources.

[0058] In some embodiments, the power supply system 200 further includes a battery 205 connected to the first converter and the second converter, respectively, for controlling the first converter and the second converter to ensure normal operation of the power supply system.

[0059] In some embodiments, the control device may be configured to give priority to charging the battery. For example, the control device may control the second converter to give priority to charging the battery with the electric energy provided by the second power source.

[0060] Exemplarily, the control device may control the second converter to periodically detect the power level of the battery to determine whether the battery needs to be charged, and when the battery needs to be charged, control the second converter to charge the battery.

[0061] As another example, the control device may control the first converter to periodically detect the power level of the battery to determine whether the battery needs to be charged, and when the battery needs to be charged, control the first converter to charge the battery.

[0062] As another example, the control device may further detect the operating status of the first converter and the second converter to determine whether the first converter or the second converter is charging the battery.

[0063] In another exemplary embodiment, the control device may further receive a signal from the battery through the second converter, indicating that the battery needs to be charged. After receiving the signal, the control device controls the second converter to charge the battery.

[0064] It should be noted that the control device may judge the output power of the second power supply or the output power of the second converter to determine the working state of the second converter.

[0065] As a possible implementation, when the second power utilization efficiency is greater than the first power utilization efficiency, controlling the second converter to supply power to the load with the second power supply can be specifically implemented as follows:

[0066] When the second power utilization efficiency is greater than the first power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, controlling the second converter to supply power to the battery with the output power;

[0067] If the output power of the second converter is greater than the charging power of the battery and less than or equal to the sum of the charging power of the battery and the power demand of the load, control the second converter to supply power to the battery with the charging power of the battery and to supply power to the load with the first surplus power;

[0068] If the output power of the second converter is greater than the sum of the battery charging power and the load demand power, the second converter is controlled to supply power to the battery with the battery charging power, supply power to the load with the load demand power, and supply power to the first power source with the second surplus power;

[0069] The first surplus power is the difference between the output power and the battery charging power, and the second surplus power is the difference between the output power and the sum of the battery charging power and the load demand power.

[0070] As another possible implementation, when the first power utilization efficiency is less than or equal to the second power utilization efficiency, controlling the second converter to supply power to the first power supply with the second power supply may be specifically implemented as follows:

[0071] When the first power utilization efficiency is less than or equal to the second power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, controlling the second converter to supply power to the battery with the output power;

[0072] If the output power of the second converter is greater than the charging power of the battery, the second converter is controlled to supply power to the battery with the charging power of the battery and to supply power to the first power source with the first surplus power.

[0073] In some embodiments, the power supply system 200 may further include an inverter 208, which is connected to the second converter 204 and the first power source 201 respectively, and is used to convert the DC voltage of the second converter into an AC voltage, operate in parallel with the power grid, and provide power to the power grid.

[0074] It is understood that regardless of whether the first power utilization efficiency is less than the second power utilization efficiency, the control device will determine the final destination of the second power source based on the output power of the second converter. That is, the second power source can charge the battery, power the load, and be connected to the first power source to power the first power source, thereby fully utilizing the second power source. Furthermore, by selecting a path with higher power utilization efficiency to power the load, the present invention improves the power utilization efficiency of the second power source and the dual power supply system.

[0075] It should be noted that the second power supply preferentially charges the battery through the second converter, ensuring the power in the battery, allowing the container data center to operate more safely and reliably, and improving the safety and reliability of the power supply system of the container data center.

[0076] It should be noted that Figure 2 The second converter shown is directly connected to the load, which reduces the conversion process during power transmission. That is, the second power supply can directly power the load through the second converter without conversion through other converters, thereby improving the power utilization efficiency during the power supply process.

[0077] Optionally, the control device may also judge the working states of the first power supply and the second power supply to determine the working states of the first converter and the second converter.

[0078] In some embodiments, the control device may detect the working state of the second power supply; if the second power supply is in a normal state, the relationship between the first power utilization efficiency and the second power utilization efficiency is determined.

[0079] In other embodiments, if the second power supply is in a power-off state and the first power supply is in a normal state, controlling the first converter to supply power to the load;

[0080] In other embodiments, if the second power source is in a power-off state and the first power source is in a power-off state, the battery of the power supply system is controlled to supply power to the load through the first converter or the second converter.

[0081] It is understood that when both the first power source and the second power source are in a power-off state, the control device can control the battery in the power supply system 200 to supply power to the load. To improve the power utilization efficiency of the dual-power supply system, before the battery supplies power to the load, the control device can determine the relationship between the first power utilization efficiency and the second power utilization efficiency and select the path with higher power utilization efficiency to supply power to the load.

[0082] Exemplarily, when the first power utilization efficiency is greater than the second power utilization efficiency, controlling the battery of the power supply system to supply power to the load through the first converter;

[0083] In another exemplary embodiment, when the first power utilization efficiency is less than or equal to the second power utilization efficiency, the battery of the power supply system is controlled to supply power to the load through the second converter.

[0084] In this way, when the battery supplies power to the load, the control device can select a path with higher power utilization efficiency to supply power to the load, thereby improving the power utilization efficiency of the dual power supply system.

[0085] based on Figure 2 The power supply system shown in Figure 3As shown, an embodiment of the present invention provides a control method for a power supply system, the power supply system comprising a first converter, a second converter and a control device; the first converter is connected to a first power source and a load respectively; the second converter is connected to a second power source, a first power source and a load respectively; the control device is connected to the first converter and the second converter respectively. The execution subject of the method is Figure 2 In the control device 207, the method includes steps S301-S302.

[0086] S301. Determine whether the second power utilization efficiency is greater than the first power utilization efficiency. If so, execute S302; if not, execute S303.

[0087] S302: The control device controls the second converter to supply power to the load with the second power supply.

[0088] S303: The control device controls the second converter to supply power to the first power supply with the second power supply.

[0089] The first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone.

[0090] The power supply system control method provided by the present invention compares the energy utilization efficiency of the first converter and the second converter during power supply. When the energy utilization efficiency of the second converter is greater than that of the first converter, the second power source is selected to supply power to the load through the second converter; otherwise, the second converter is controlled to supply power to the second power source with the first power source, so that the first power source can supply power to the load through the first converter. While ensuring normal power supply to the load, the power provided by the second power source is fully utilized, the energy utilization efficiency of the second power source is improved, thereby improving the energy utilization efficiency of the power supply system as a whole, and further improving the energy utilization efficiency of the container data center when powered by dual power sources.

[0091] like Figure 4 As shown, an embodiment of the present invention provides another method for controlling a power supply system, which includes steps S401-S421.

[0092] S401, start up the photovoltaic panels.

[0093] (Optional) S402. The control device detects the first electric energy utilization efficiency.

[0094] The first power utilization efficiency n1 is the power utilization efficiency when the UPS supplies power to the load alone.

[0095] (Optional) S403. The control device detects the second electric energy utilization efficiency.

[0096] The second power utilization efficiency n2 is the power utilization efficiency when the DC converter supplies power to the load alone.

[0097] In some embodiments, the control device may periodically detect the first power utilization efficiency and the second power utilization efficiency. For example, the control device detects once every 10 days, or once every 15 days, which is not limited to this.

[0098] As another possible implementation manner, the control device may further detect the first power utilization efficiency and the second power utilization efficiency when receiving indication information indicating a load change.

[0099] It should be noted that after the power supply system is running stably, the control device detects the first power utilization efficiency and the second power utilization efficiency as judgment conditions for selecting DC converter power supply or UPS power supply under the same load condition.

[0100] S404, the control device detects whether the photovoltaic module is in the power generation state, and the power generation power P of the photovoltaic module 发 If it is in the power generation state, execute S405; if it is not in the power generation state, execute S419.

[0101] S405, the control device determines the power generation power P of the photovoltaic module 发 Is it greater than the first threshold P 充 If yes, execute S410, if no, execute S406.

[0102] Among them, the first threshold P 充 Used to indicate the power required by the DC converter to charge the battery.

[0103] S406: The control device determines that the converter does not have available power, and controls the DC converter to only charge the battery.

[0104] Among them, the power supply P 供 The remaining power of the DC converter except for charging the battery.

[0105] S407: The control device determines whether the battery is fully charged. If so, the process proceeds to S408; if not, the process proceeds to S406.

[0106] As a possible implementation manner, the control device may detect the voltage of the battery to determine whether the battery is fully charged.

[0107] S408: The control device determines whether the DC converter has power that can be supplied.

[0108] It is understood that when the PV panels are generating power, the DC converter prioritizes charging the battery. When the PV panels have excess power, that is, when the DC converter has available power, the DC converter uses that available power to power the load. Therefore, the power supply system control method of this application prioritizes battery charge, ensuring the safe and reliable operation of the container data center.

[0109] S409: The control device determines whether the first power utilization efficiency n1 is less than the second power utilization efficiency n2. If yes, execute S411; if not, execute S410.

[0110] S410, the control device controls the DC converter to disconnect from the load, and controls the DC converter to supply power P 供 Supply power to the mains power supply.

[0111] S411, the control device determines the power P that can be supplied by the DC converter 供 Is it greater than the load's required power P? 负载 If yes, execute S412; if no, execute S413.

[0112] S412, the control device controls the DC converter to supply power P 供 Supply power to the load and supply power to the mains power supply at a second power; control the UPS to disconnect from the load.

[0113] The second power is the difference between the available power and the required power of the load.

[0114] S413, the control device controls the DC converter to supply power P 供 Supply power to the load and control the UPS to adjust the power supplied to the load until the connection with the load is disconnected.

[0115] As a possible implementation, when the power available for supply of the DC converter is less than the power required by the load, the control device controls the DC converter to supply power P 供 Supply power to the load and control the UPS to supply power to the load at a first power, wherein the first power is the difference between the load's required power and the available power.

[0116] As a possible implementation, when the power available for supply of the DC converter is equal to the power required by the load, the control device controls the DC converter to supply power P 供 Supply power to the load and control the UPS to disconnect from the load.

[0117] S414: The control device controls the inverter to start, and controls the DC converter to operate in parallel with the mains through the inverter.

[0118] It is understandable that when the photovoltaic module is in the power generation state, the control device controls the DC converter and the UPS to give priority to the use of the electricity generated by the photovoltaic module, so that the electricity generated by the photovoltaic module is fully utilized.

[0119] S415: The control device determines whether the AC power supply is normal. If so, execute S416; if not, execute S418.

[0120] S416: The control device controls the UPS to charge the battery.

[0121] S417. The control device controls the UPS to supply power to the load.

[0122] S418: The control device determines whether the first power utilization efficiency n1 is less than the second power utilization efficiency n2. If so, execute S420; if not, execute S419.

[0123] S419: The control device controls the UPS so that the battery supplies power to the load through the UPS.

[0124] S420: The control device controls the DC converter so that the battery supplies power to the load through the DC converter.

[0125] S421. The load operates normally.

[0126] based on Figure 4 In the illustrated embodiment, the control method of the power supply system provided by the present application improves the power supply reliability and power utilization efficiency of the container data center.

[0127] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0128] The following are device embodiments of the present invention. For details not fully described therein, reference may be made to the corresponding method embodiments described above.

[0129] Based on the above power supply system and control method, Figure 5 A schematic diagram of the structure of a control device provided in an embodiment of the present invention is shown. This control device 207 is used to implement the control method of the power supply system described in the above embodiment. The power supply system includes a DC converter, an uninterruptible power supply (UPS), and a battery. The DC converter and UPS are both connected to the battery. The DC converter is also used to connect to a new energy power generation device and a load, respectively. The UPS is also used to connect to a mains power supply and a load, respectively. The control device 207 includes a communication module 501 and a processing module 502.

[0130] The communication module 501 is configured to control the second converter to supply power to the load with the second power supply when the second power utilization efficiency is greater than the first power utilization efficiency.

[0131] Processing module 502 is used to control the second converter to supply power to the first power supply with the second power supply when the second power utilization efficiency is less than or equal to the first power utilization efficiency; wherein the first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; and the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone.

[0132] In some embodiments, the processing module 502 is specifically used to, when the second power utilization efficiency is greater than the first power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, control the second converter to supply power to the battery with the output power; if the output power of the second converter is greater than the charging power of the battery and less than or equal to the sum of the charging power of the battery and the required power of the load, control the second converter to supply power to the battery with the charging power of the battery, and supply power to the load with the first surplus power; if the output power of the second converter is greater than the sum of the charging power of the battery and the required power of the load, control the second converter to supply power to the battery with the charging power of the battery, supply power to the load with the required power of the load, and supply power to the first power source with the second surplus power; wherein the first surplus power is the difference between the output power and the charging power of the battery, and the second surplus power is the difference between the output power and the sum of the charging power of the battery and the required power of the load.

[0133] In some embodiments, the processing module 502 is further used to control the second converter to supply power to the battery with the output power when the first power utilization efficiency is less than or equal to the second power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery; if the output power of the second converter is greater than the charging power of the battery, control the second converter to supply power to the battery with the charging power of the battery and to supply power to the first power source with the first residual power.

[0134] In some embodiments, the communication module 501 is further configured to detect the working state of the second power source. The processing module 502 is further configured to determine the magnitude relationship between the first power utilization efficiency and the second power utilization efficiency if the second power source is in a normal state.

[0135] In some embodiments, the processing module 502 is further used to control the first converter to supply power to the load if the second power supply is in a power-off state and the first power supply is in a normal state; if the second power supply is in a power-off state and the first power supply is in a power-off state, control the battery of the power supply system to supply power to the load through the first converter or the second converter.

[0136] In some embodiments, processing module 502 is specifically configured to control the battery of the power supply system to supply power to the load via the first converter when the first power utilization efficiency is greater than the second power utilization efficiency; and to control the battery of the power supply system to supply power to the load via the second converter when the first power utilization efficiency is less than or equal to the second power utilization efficiency. In some embodiments, the first power source is a mains power source, the second power source is a new energy power generation device, the first converter is an uninterruptible power supply (UPS), and the second converter is a DC converter.

[0137] Figure 6 FIG. 1 is a schematic diagram of the structure of another control device provided by an embodiment of the present invention. Figure 6 As shown, the control device 207 of this embodiment includes: a processor 601, a memory 602, and a computer program 603 stored in the memory 602 and executable on the processor 601. When the processor 601 executes the computer program 603, the steps in the above method embodiment are implemented, for example Figure 3 、 Figure 4 Alternatively, when the processor 601 executes the computer program 603, the functions of the modules / units in the above-mentioned device embodiments are realized, for example Figure 5 The functions of the communication module 501 and the processing module 502 are shown.

[0138] Exemplarily, the computer program 603 may be divided into one or more modules / units, which are stored in the memory 602 and executed by the processor 601 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 603 in the control device 207. For example, the computer program 603 may be divided into Figure 5 The communication module 501 and the processing module 502 are shown.

[0139] The processor 601 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0140] The memory 602 can be an internal storage unit of the control device 207, such as a hard disk or memory of the control device 207. The memory 602 can also be an external storage device of the control device 207, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the control device 207. Furthermore, the memory 602 can include both the internal storage unit of the control device 207 and an external storage device. The memory 602 is used to store the computer program and other programs and data required by the control device. The memory 602 can also be used to temporarily store data that has been output or is about to be output.

[0141] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0142] like Figure 7 As shown, an embodiment of the present invention provides a container data center, which includes Figure 2 The power supply system shown in FIG. 2 includes a load 206 disposed inside the container data center.

[0143] In some embodiments, the container data center further includes a passage door 702 for allowing operation and maintenance personnel to enter and exit the container data center.

[0144] In some embodiments, the container data center further includes an exhaust fan port 703 for installing ventilation equipment such as air conditioners.

[0145] In some embodiments, the container data center further includes a photovoltaic module 701. The photovoltaic module 701 can be installed on a frame 704 of the container data center to form the upper wall and side walls of the container data center.

[0146] For example, Figure 8 As shown, the photovoltaic module 701 adopts a three-layer structure, which is composed of tempered glass 7011, photovoltaic panel 7012, and interior panel 7014 from the outside to the inside. A photovoltaic module circuit 7013 is provided between the photovoltaic panel 7012 and the interior panel 7014.

[0147] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0148] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0149] In the embodiments provided by the present invention, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, and can be electrical, mechanical, or other forms.

[0150] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0151] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0152] If the integrated module / 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, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by a computer program to instruct the relevant hardware. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement the steps of the above-mentioned method embodiment. The computer program includes computer program code, which can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable 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, computer-readable media does not include electric carrier signals and telecommunication signals.

[0153] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A power supply system, characterized in that: include: A first converter is connected to a first power source and a load respectively; the first power source is a mains power source; The second converter is connected to the second power supply, the first power supply and the load respectively; the second power supply is a new energy power generation device, the first converter is an uninterruptible power supply UPS, and the second converter is a DC converter; a control device, connected to the first converter and the second converter respectively, for detecting an operating state of the second power supply; If the second power supply is in a normal state, determining the relationship between the first power utilization efficiency and the second power utilization efficiency; when the second power utilization efficiency is greater than the first power utilization efficiency, controlling the second converter to supply power to the load with the second power supply; otherwise, controlling the second converter to supply power to the first power supply with the second power supply, so that the first power supply can supply power to the load through the first converter; The first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone.

2. The power supply system according to claim 1, characterized in that: The power supply system further includes: batteries connected to the first converter and the second converter respectively; The control device is specifically configured to, when the second power utilization efficiency is greater than the first power utilization efficiency, control the second converter to supply power to the battery with the output power if the output power of the second converter is less than or equal to the charging power of the battery; If the output power of the second converter is greater than the charging power of the battery and less than or equal to the sum of the charging power of the battery and the power demand of the load, control the second converter to supply power to the battery with the charging power of the battery and to supply power to the load with the first surplus power; If the output power of the second converter is greater than the sum of the charging power of the battery and the power required by the load, control the second converter to supply power to the battery with the charging power of the battery, supply power to the load with the power required by the load, and supply power to the first power source with the second surplus power; The first surplus power is the difference between the output power and the charging power of the battery, and the second surplus power is the difference between the output power and the sum of the charging power of the battery and the required power of the load.

3. The power supply system according to claim 2, characterized in that: The control device is specifically used for: When the first power utilization efficiency is less than or equal to the second power utilization efficiency, if the output power of the second converter is less than or equal to the charging power of the battery, controlling the second converter to supply power to the battery with the output power; If the output power of the second converter is greater than the charging power of the battery, the second converter is controlled to supply power to the battery with the charging power of the battery and to supply power to the first power source with the first surplus power.

4. The power supply system according to claim 1, wherein: The control device is also used for: If the second power supply is in a power-off state and the first power supply is in a normal state, controlling the first converter to supply power to the load; If the second power source is in a power-off state and the first power source is in a power-off state, the battery of the power supply system is controlled to supply power to the load through the first converter or the second converter.

5. The power supply system according to claim 4, characterized in that: The control device is specifically used for: When the first power utilization efficiency is greater than the second power utilization efficiency, controlling the battery of the power supply system to supply power to the load through the first converter; When the first power utilization efficiency is less than or equal to the second power utilization efficiency, the battery of the power supply system is controlled to supply power to the load through the second converter.

6. A control method for a power supply system, characterized in that: The power supply system includes a first converter, a second converter and a control device; the first converter is connected to the first power source and the load respectively; The second converter is connected to the second power supply, the first power supply and the load respectively; the control device is connected to the first converter and the second converter respectively; the first power supply is a mains power supply, the second power supply is a new energy power generation device, the first converter is an uninterruptible power supply UPS, and the second converter is a DC converter; the method includes: detecting a working state of the second power supply; and if the second power supply is in a normal state, determining a magnitude relationship between the first power utilization efficiency and the second power utilization efficiency; When the second power utilization efficiency is greater than the first power utilization efficiency, controlling the second converter to supply power to the load with the second power supply; otherwise, controlling the second converter to supply power to the first power supply with the second power supply, so that the first power supply can supply power to the load through the first converter; The first power utilization efficiency is the power utilization efficiency when the first converter supplies power to the load alone; the second power utilization efficiency is the power utilization efficiency when the second converter supplies power to the load alone.

7. A container data center, characterized in that: The container data center includes the power supply system according to any one of claims 1 to 5.

8. The container data center according to claim 7, characterized in that: The container data center further includes a second power source, wherein the second power source includes a photovoltaic module; The photovoltaic components are installed on the frame of the container data center to form the upper wall and side walls of the container data center. The photovoltaic components are composed of tempered glass, photovoltaic panels, photovoltaic component circuits, and interior panels from the outside to the inside.

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