Power conversion device and method, system, electronic device and medium

Abstract

The present application provides a power conversion device and method, system, electronic device, and medium, comprising: a first power supply device and a second power supply device connected in parallel; wherein the first power supply device includes a first monitoring unit and multiple first rectifier modules; the second power supply device includes a second monitoring unit and multiple second rectifier modules; the multiple first rectifier modules and the multiple second rectifier modules are respectively connected to a communication load via a busbar; the second monitoring unit is configured to adjust the output voltage of the multiple second rectifier modules at the next moment when it is determined that the input current of the communication load, the output voltage and output current of the multiple second rectifier modules, and the busbar voltage obtained at the current moment meet the adjustment conditions. This solves the problems of large engineering workload and high cost in the existing technology of utilizing over-service rectifier modules.

Description

Technical Field

[0001] The present application relates to the field of switching power supplies, and in particular to a power conversion device and method, system, electronic equipment and medium. Background Art

[0002] In the existing technology, the number of base stations deployed of various types exceeds 2 million. Among the 2 million base stations, the combined switching power supplies in most of the base stations are already in an out-of-service state and need to be replaced in whole or in part.

[0003] At present, when replacing part of a combination switching power supply, for example, when replacing the power conversion equipment in the combination switching power supply, since the power conversion equipment includes a rectifier module and a monitoring unit, and the structural design and control principles of the rectifier modules of different manufacturers are quite different and cannot be used in parallel, and with the development of technology, compared with the new rectifier modules, the old rectifier modules have problems such as large size and low efficiency. Therefore, once the rectifier module in the power conversion equipment needs to be replaced, the original rectifier module may be discontinued and the same model of rectifier module cannot be obtained, or the need to replace the new rectifier module may lead to the problem that the plug-in frame required for the new rectifier module and the old rectifier module do not match, thereby affecting the replacement and further affecting the normal operation of the combination switching power supply.

[0004] To solve the above problems, the existing technology generally adopts the following two methods for replacement: Method 1: Utilize the cabinet body, AC distribution and DC distribution parts of the original combination switching power supply, take advantage of the small size of the new rectifier module, replace all the rectifier modules, and replace the plug-in frame that matches the new rectifier module; Method 2: Install an intelligent adapter between the old rectifier module and the busbar, so that the outputs of old rectifier modules from different manufacturers can be connected in parallel through the adapter.

[0005] However, the two replacement methods mentioned above not only require the combined switching power supply to be powered off before replacement, but also require replacing the subrack or adding a new smart adapter during the replacement process, which is relatively complicated. Therefore, a new method is urgently needed to more effectively solve the problem of overdue power conversion equipment. Summary of the Invention

[0006] The present application provides a power conversion device and method, a system, an electronic device and a medium to effectively solve the problem of over-service of power conversion equipment.

[0007] In a first aspect, the present application provides a power conversion device, comprising:

[0008] A first power supply device and a second power supply device connected in parallel; wherein, the first power supply device includes a first monitoring unit and a plurality of first rectification modules; the second power supply device includes a second monitoring unit and a plurality of second rectification modules; the plurality of first rectification modules and the plurality of second rectification modules are respectively connected to a communication load through a busbar.

[0009] The second monitoring unit is configured to perform corresponding adjustment processing on the output voltages of the plurality of second rectification modules at the next moment when it is determined that the input current of the communication load, the output voltages and output currents of the plurality of second rectification modules, and the busbar voltage obtained at the current moment meet the adjustment conditions.

[0010] In a specific embodiment, the second monitoring unit is specifically configured to:

[0011] When the busbar voltage is 48V, and it is determined that the input current I of the communication load, the output voltages Up and output currents Ip of the plurality of second rectification modules obtained at the current moment satisfy 0.95*I L ≤Ip<I L ≤Ip<I L , and 48V<Up≤57V, determine whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than a preset power.

[0012] When it is determined that the output power Pp is greater than the preset power, perform corresponding adjustment processing on the output voltages of the plurality of second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage.

[0013] In a specific embodiment, the second monitoring unit is specifically configured to:

[0014] When the busbar voltage is 48V, and it is determined that the input current I of the communication load, the output voltages Up and output currents Ip of the plurality of second rectification modules obtained at the current moment satisfy I L 、所述多个第二整流模块的输出电压Up和输出电流Ip,满足I L ≤Ip, and 48V<Up≤57V, perform corresponding adjustment processing on the output voltages of the plurality of second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage.

[0015] In a specific embodiment, the second monitoring unit is specifically configured to:

[0016] When the busbar voltage is 48V, and it is determined that the input current I of the communication load, the output voltages Up and output currents Ip of the plurality of second rectification modules obtained at the current moment satisfy Ip<0.95*I L 、所述多个第二整流模块的输出电压Up和输出电流Ip,满足Ip<0.95*I LWhen 48V < Up ≤ 57V, determine whether the output power Pp obtained according to the output voltage Up and the output current Ip is greater than a preset power.

[0017] If it is determined that the output power Pp is greater than the preset power, perform corresponding adjustment processing on the output voltages of the multiple second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage.

[0018] In a specific embodiment, the second monitoring unit is further specifically configured to:

[0019] If it is determined that the output power Pp is less than 95% of the preset power, perform corresponding adjustment processing on the output voltages of the multiple second rectification modules at the next moment so that the adjusted output voltage is higher than the output voltage.

[0020] In a specific embodiment, the preset power is 80% of the rated power corresponding to the multiple second rectification modules.

[0021] In a specific embodiment, the second monitoring unit is specifically configured to:

[0022] If it is determined that the duration for which the output voltage of the multiple second rectification modules is equal to 48V is greater than a preset time, generate an alarm signal.

[0023] In a second aspect, the present application provides a combined switching power supply, including: an AC power distribution device, a power conversion device, and a DC power distribution device; wherein, the power conversion device is the power conversion device described in the first aspect.

[0024] In a third aspect, the present application provides a power conversion processing method, including:

[0025] The second monitoring unit determines whether an adjustment condition is met based on the input current of the communication load, the output voltages and output currents of the multiple second rectification modules, and the obtained busbar voltage acquired at the current moment.

[0026] When the second monitoring unit determines that the adjustment condition is met, perform corresponding adjustment processing on the output voltages of the multiple second rectification modules at the next moment.

[0027] In a specific embodiment, the second monitoring unit determines whether an adjustment condition is met based on the input current of the communication load, the output voltages and output currents of the multiple second rectification modules, and the obtained busbar voltage acquired at the current moment, including:

[0028] When the busbar voltage is 48V, and the second monitoring unit determines the input current I of the communication load acquired at the current moment L, the output voltage Up and output current Ip of the multiple second rectification modules satisfy 0.95*I L ≤Ip < I L , and when 48V < Up ≤ 57V, it is determined whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than a preset power.

[0029] Then when the second monitoring unit determines that the adjustment condition is satisfied, it performs corresponding adjustment processing on the output voltage of the multiple second rectification modules at the next moment, including:

[0030] When the second monitoring unit determines that the output power Pp is greater than the preset power, it performs corresponding adjustment processing on the output voltage of the multiple second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage.

[0031] In a specific embodiment, when the second monitoring unit determines that the adjustment condition is satisfied, it performs corresponding adjustment processing on the output voltage of the multiple second rectification modules at the next moment, including:

[0032] When the busbar voltage of the second monitoring unit is 48V, and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the multiple second rectification modules satisfy I L ≤Ip, and when 48V < Up ≤ 57V, it performs corresponding adjustment processing on the output voltage of the multiple second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage.

[0033] In a specific embodiment, the second monitoring unit determines whether the adjustment condition is satisfied according to the input current of the communication load obtained at the current moment, the output voltage and output current of the multiple second rectification modules, and the obtained busbar voltage, including:

[0034] When the busbar voltage of the second monitoring unit is 48V, and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the multiple second rectification modules satisfy Ip < 0.95*I L , and when 48V < Up ≤ 57V, it is determined whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than a preset power.

[0035] Then when the second monitoring unit determines that the adjustment condition is satisfied, it performs corresponding adjustment processing on the output voltage of the multiple second rectification modules at the next moment, including:

[0036] If the second monitoring unit determines that the output power Pp is greater than the preset power, the second monitoring unit performs corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at the next moment, so that the adjusted output voltage is lower than the output voltage.

[0037] In a specific embodiment, it also includes:

[0038] If the second monitoring unit determines that the output power Pp is less than 95% of the preset power, the output voltages of the plurality of second rectifier modules are adjusted accordingly at the next moment so that the adjusted output voltages are higher than the output voltage.

[0039] In a specific implementation, the preset power is 80% of the rated power corresponding to the plurality of second rectifier modules.

[0040] In a specific embodiment, it also includes:

[0041] The second monitoring unit generates an alarm signal when determining that the output voltage of the plurality of second rectifier modules is equal to 48V for a duration greater than a preset time.

[0042] In a fourth aspect, the present application provides an electronic device, comprising:

[0043] Processor, memory, communication interface;

[0044] The memory is used to store executable instructions executable by the processor;

[0045] Wherein, the processor is configured to execute the power conversion processing method described in the third aspect by executing the executable instructions.

[0046] In a fifth aspect, the present application provides a readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the power conversion processing method described in the third aspect is implemented.

[0047] The present application provides a power conversion device, system, method, apparatus, and medium. The power conversion device comprises a first power supply device and a second power supply device connected in parallel. The first power supply device comprises a first monitoring unit and a plurality of first rectifier modules; the second power supply device comprises a second monitoring unit and a plurality of second rectifier modules; the plurality of first rectifier modules and the plurality of second rectifier modules are each connected to a communication load via a busbar. Furthermore, the second monitoring unit is configured to adjust the output voltages of the plurality of second rectifier modules at a subsequent moment when it determines that the input current of the communication load, the output voltages and output currents of the plurality of second rectifier modules, and the busbar voltage obtained at a current moment meet adjustment conditions. Compared to the prior art, which requires replacing a subrack or adding a new smart adapter after a power outage, the present application connects a second power supply device, i.e., a new power supply device, in parallel with the first power supply device, i.e., the old power supply device, enabling the first and second power supplies to work together to effectively achieve transitional replacement. This solves the prior art issues of heavy workload and complex operations such as cutting cables due to the need to reconfigure a new subrack, as well as the high cost of adding a new smart adapter. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] Figure 1 A structural diagram of a power conversion device provided in Example 1 of the present application;

[0050] Figure 2 A schematic diagram of the structure of a combined switching power supply provided in Example 3 of the present application;

[0051] Figure 3 A flowchart of a power conversion method provided in the fourth embodiment of the present application;

[0052] Figure 4 A flowchart of a power conversion processing method provided in Example 5 of the present application;

[0053] Figure 5 This is a schematic diagram of the structure of an electronic device provided in this application.

[0054] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0055] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments made by ordinary technicians in this field based on the inspiration of these embodiments fall within the scope of protection of this application.

[0056] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the numbers used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0057] First, let’s explain the terms involved in this application:

[0058] Monitoring unit: issues voltage adjustment instructions to the rectifier modules, manages multiple rectifier modules in a unified manner, and controls the output voltage of the rectifier modules to be consistent.

[0059] Rectifier module: converts 220V AC power into -48V DC power and outputs it (the output voltage range is adjustable from -40V to -57V), and adjusts the output voltage according to the instructions of the monitoring unit.

[0060] In the prior art, due to the large number of base station deployments, replacing a combined switching power supply (CSPS) in a base station due to extended service life is a significant workload. In particular, replacing the power conversion equipment in a CSPS presents a significant workload and also presents the challenge of replacing the rectifier modules that comprise the power conversion equipment with newer or older models. Specifically, if the original rectifier module is discontinued or a newer rectifier module with better performance becomes available during the replacement process, not only does the power conversion equipment need to be shut down, but the matching rectifier module's subrack must also be replaced, or an intelligent adapter must be added to accommodate the different rectifier module or the higher-performance rectifier module. This results in a high workload, complex replacement process, and relatively high costs.

[0061] In order to solve the above technical problems, the technical concept of this application is to provide a more effective replacement method to solve the problem that the existing power conversion equipment must be powered off when replaced due to outage, and the replacement is complicated or costly.

[0062] The technical solution of the present application is described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0063] Figure 1 This is a structural diagram of a power conversion device provided in Example 1 of the present application, such as Figure 1 As shown, the power conversion device includes a first power supply device 11 and a second power supply device 12 connected in parallel. The first power supply device 11 includes a first monitoring unit 111 and multiple first rectifier modules 112. The second power supply device 12 includes a second monitoring unit 121 and multiple second rectifier modules 122. The multiple first rectifier modules 112 and the multiple second rectifier modules 122 are each connected to a communication load 14 via a busbar 13.

[0064] It should be noted that the first power supply device 11 is an old power supply device installed in the power conversion equipment, that is, the corresponding first monitoring unit 111 and multiple first rectifier modules 112 are also old. The second power supply device 12 is a new power supply device installed in the power conversion equipment, that is, the corresponding second monitoring unit 121 and multiple second rectifier modules 122 are also new.

[0065] Specifically, the second monitoring unit 121 is used to perform corresponding adjustment processing on the output voltage of the multiple second rectifier modules 122 at the next moment when it is determined that the input current of the communication load 14, the output voltage and output current of the multiple second rectifier modules 122, and the obtained busbar 13 voltage meet the adjustment conditions at the current moment.

[0066] Optionally, the second monitoring unit 121 can be divided into two operating modes, one is the independent working mode, and the other is the parallel working mode, that is, the second monitoring unit 121 has a multi-scenario working mode. In this application, since the first power supply device 11 has not been completely replaced, that is, the first power supply device 11 and the second power supply device 12 are in the process of gradual replacement, therefore, both the first power supply device 11 and the second power supply device 12 can work normally. Based on this, the second monitoring unit 121 operates in the parallel working mode, that is, the first power supply device 11 and the second power supply device 12 are connected in parallel to supply power to the communication load and the battery pack, and the output voltage is mainly controlled by the first monitoring unit 111, and the second monitoring unit 121 tracks its output voltage.

[0067] In this embodiment, a first power supply device and a second power supply device connected in parallel are provided in the power conversion device. Among them, the first power supply device includes a first monitoring unit and a plurality of first rectification modules; the second power supply device includes a second monitoring unit and a plurality of second rectification modules; the plurality of first rectification modules and the plurality of second rectification modules are respectively connected to the communication load through a bus bar. In addition, the second monitoring unit is used to perform corresponding adjustment processing on the output voltages of the plurality of second rectification modules at the next moment when it is determined that the input current of the communication load, the output voltages and output currents of the plurality of second rectification modules, and the voltage of the bus bar obtained at the current moment meet the adjustment conditions. Compared with the prior art that all require power-off processing and then replace the plug-in frame or add a new intelligent adapter, in this application, by connecting the second power supply device, that is, the new power supply device, in parallel on the basis of the first power supply device, that is, the old power supply device, the first power supply device and the second power supply device can work together to effectively achieve transitional replacement, thus solving the problems of large workload and complex operation such as cable cutting caused by reconfiguring a new plug-in frame in the prior art, and the problem of high cost caused by adding a new intelligent adapter.

[0068] On the basis of the above-mentioned Embodiment 1, Embodiment 2 provides a specific second monitoring unit 121. Specifically, the second monitoring unit 121 is used when the voltage of the bus bar 13 is 48V, and it is determined that the input current I of the communication load 14 obtained at the current moment L , the output voltages Up and output currents Ip of the plurality of second rectification modules 122 satisfy 0.95*I L ≤Ip<I L , and 48V < Up ≤ 57V, to determine whether the output power Pp obtained according to the output voltage Up and the output current Ip is greater than the preset power.

[0069] When it is determined that the output power Pp is greater than the preset power, corresponding adjustment processing is performed on the output voltages of the plurality of second rectification modules 122 at the next moment, so that the adjusted output voltage is lower than the output voltage.

[0070] Optionally, the second monitoring unit 121 is configured to, when the voltage of the busbar 13 is 48V and it is determined that the input current I of the communication load 14 obtained at the current moment L , the output voltage Up and output current Ip of multiple second rectification modules 122 satisfy I L ≤Ip, and when 48V < Up ≤ 57V, perform corresponding adjustment processing on the output voltages of multiple second rectification modules 122 at the next moment, so that the adjusted output voltage is lower than the output voltage.

[0071] Optionally, the second monitoring unit 121 is further configured to, when the voltage of the busbar 13 is 48V and it is determined that the input current I of the communication load 14 obtained at the current moment L , the output voltage Up and output current Ip of multiple second rectification modules 122 satisfy Ip < 0.95*I L , and when 48V < Up ≤ 57V, determine whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than the preset power.

[0072] If it is determined that the output power Pp is greater than the preset power, perform corresponding adjustment processing on the output voltages of multiple second rectification modules 122 at the next moment, so that the adjusted output voltage is lower than the output voltage.

[0073] Optionally, the second monitoring unit 121 is further configured to, if it is determined that the output power Pp is less than 95% of the preset power, perform corresponding adjustment processing on the output voltages of multiple second rectification modules 122 at the next moment, so that the adjusted output voltage is higher than the output voltage.

[0074] Optionally, the preset power is 80% of the rated power corresponding to multiple second rectification modules 122.

[0075] Optionally, the second monitoring unit 121 is further configured to generate an alarm signal if it is determined that the duration for which the output voltage of multiple second rectification modules 122 is equal to 48V is greater than the preset time.

[0076] In this embodiment, when the second monitoring unit determines that the input current of the communication load obtained at the current moment, the output voltages and output currents of multiple second rectification modules, and the obtained busbar voltage satisfy the adjustment conditions, corresponding adjustment processing is performed on the output voltages of multiple second rectification modules at the next moment. Compared with the prior art where power-off processing is required and then new rectification modules and frames are replaced or new intelligent adapters are added, in this application, by installing the second monitoring unit in the second power supply device, that is, a new monitoring unit, the workload of the first rectification module is reduced, and the excessive replacement of the first rectification module is effectively achieved, thereby avoiding problems such as large engineering consumption and long time caused by replacing new rectification modules and frames in the prior art, as well as the problem of high cost of series adapters.

[0077] Figure 2 This is a structural diagram of a combined switching power supply provided in Example 3 of the present application, such as Figure 2 As shown, the combined switching power supply includes three parts: AC power distribution 21, power conversion 22 and DC power distribution 23, wherein the AC power distribution 21, power conversion 22 and DC power distribution 23 are all installed in a cabinet.

[0078] Specifically, AC power distribution 21 receives AC mains input and distributes it to multiple small shunt switches, each of which provides a 220V AC power source to a rectifier module. Power conversion 22 consists of two parts: multiple rectifier modules and a monitoring unit. The rectifier modules convert 220V AC power into -48V DC output (the output voltage range is adjustable from -40V to -57V). The monitoring unit manages the multiple rectifier modules, ensuring that their output voltages are consistent. The output voltages of all rectifier modules are connected in parallel to the same DC busbar. DC power distribution 23 consists of DC loads and switches, and a battery pack and switches connected to the DC busbar. When the AC mains is operating normally, the output voltage of the rectifier modules in power conversion 22 supplies power to the loads in DC power distribution 23 and charges the battery pack. When the batteries are fully charged, they enter a normal floating charge state. When the AC mains is outage, the batteries discharge to supply power to the loads.

[0079] The power converter 22 is a power converter device constructed based on the above-mentioned embodiment.

[0080] In this embodiment, the power conversion 22 is composed of a first power supply device and a second power supply device connected in parallel. The first power supply device includes a first monitoring unit and a plurality of first rectifier modules; the second power supply device includes a second monitoring unit and a plurality of second rectifier modules. The second monitoring unit is used to adjust the output voltage of the plurality of second rectifier modules at the next moment when it is determined that the input current of the communication load obtained at the current moment, the output voltage and output current of the plurality of second rectifier modules, and the obtained busbar voltage meet the adjustment conditions. Compared with the prior art that requires disassembly of the old monitoring unit, plug-in frame, etc. after power outage, replacement of the new plug-in frame and monitoring unit, and installation of the smart adapter, the present application effectively realizes the transition replacement of the old rectifier module and monitoring unit by connecting the second power supply device in parallel, solving the problems of the prior art such as large engineering workload, influence on work progress, and complex operation caused by configuring the new check frame during power outage, as well as the high cost required for installing the smart adapter.

[0081] Figure 3 This is a flow chart of a power conversion processing method provided in the fourth embodiment of the present application. Figure 3 As shown, the method is applied to the power conversion device of the above-mentioned embodiment 1 or embodiment 2, and the method includes the following steps:

[0082] Step S101: The second monitoring unit determines whether the adjustment condition is met based on the input current of the communication load, the output voltages and output currents of multiple second rectification modules, and the busbar voltage obtained at the current moment.

[0083] Step S102: When the second monitoring unit determines that the adjustment condition is met, it performs corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment.

[0084] In this embodiment, the second monitoring unit determines whether the adjustment condition is met based on the input current of the communication load, the output voltages and output currents of multiple second rectification modules, and the busbar voltage obtained at the current moment. When the second monitoring unit determines that the adjustment condition is met, it performs corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment. Compared with the prior art which requires power-off processing and then replacing the plug-in frame or adding a new intelligent adapter, in this application, by paralleling a second power supply device, i.e., a new power supply device, with the first power supply device, i.e., an old power supply device, the first power supply device and the second power supply device can work together to effectively achieve transitional replacement, thus solving the problems in the prior art such as the large workload and complex operation of cable cutting and connection when reconfiguring a new plug-in frame, and the high cost caused by adding a new intelligent adapter.

[0085] Figure 4 It is a schematic flowchart of a power conversion processing method provided in Embodiment 5 of this application. As Figure 4 shown, this method is applied to the power conversion device in Embodiment 1 or Embodiment 2 above, and this method includes the following steps:

[0086] Step S201: When the busbar voltage is 48V, the second monitoring unit obtains the input current I of the communication load obtained at the current moment L , the output voltages Up and output currents Ip of multiple second rectification modules.

[0087] Step S202: The second monitoring unit determines whether the input current I of the communication load obtained at the current moment L , the output voltages Up and output currents Ip of multiple second rectification modules satisfy 0.95*I L ≤Ip<I L , and 48V < Up ≤ 57V; if satisfied, execute Step S203; if not satisfied, execute Step S205.

[0088] Step S203: Determine whether the output power Pp obtained based on the output voltage Up and output current Ip is greater than the preset power; if greater, execute Step S204; if less than or equal to, execute Step S201.

[0089] Step S204: Perform corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage. Return to step S201.

[0090] Step S205: The second monitoring unit determines the input current I of the communication load obtained at the current moment L , whether the output voltages Up and output currents Ip of multiple second rectification modules satisfy I L ≤Ip, and 48V < Up ≤ 57V; if satisfied, execute step S206; if not satisfied, execute step S 207.

[0091] Step S206: Perform corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage. Return to step S201.

[0092] Step S207: The second monitoring unit determines the input current I of the communication load obtained at the current moment L , whether the output voltages Up and output currents Ip of multiple second rectification modules satisfy Ip < 0.95*I L , and 48V < Up ≤ 57V; if satisfied, execute step S208; if not satisfied, execute step S211.

[0093] Step S208: Determine the relationship between the output power Pp obtained based on the output voltage Up and output current Ip and the preset power and 95% of the preset power; if it is greater than the preset power, execute step S209; if it is less than 95% of the preset power, execute step S210; if it is greater than 95% of the preset power and less than the preset power, execute step S201.

[0094] Step S209: Perform corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage. Return to step S201.

[0095] Step S210: Perform corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment so that the adjusted output voltage is higher than the output voltage. Return to step S201.

[0096] Step S211: Adjust the output voltages of multiple second rectification modules to 48V.

[0097] Step S212: The second monitoring unit determines whether the duration for which the output voltages of multiple second rectification modules obtained at the current moment are equal to 48V is greater than the preset time. If it is greater, execute step S213; if the duration is less than or equal to the preset time, execute step S201.

[0098] Step S213: Generate an alarm signal.

[0099] In this embodiment, the output power P P is obtained according to the formula P = U*I. 0.95 is the hysteresis coefficient, which can be set to prevent single set points from jumping back and forth. In addition, Ip ≥ 0.95*I L represents that the output current of the second rectification module accounts for more than 95% of the overall output current, minimizing the workload of the first rectification module as much as possible. 57V is set artificially, and 48V < Up ≤ 57V represents that the output voltage is higher than the busbar voltage and does not exceed it by much. If the output voltage far exceeds the busbar voltage, it will charge the battery pack, and the long-term charging state of the battery pack will affect its service life. The preset power is set artificially and is 80% of the rated power, which can protect the service life of the second rectification module.

[0100] In this embodiment, when 0.95*I L ≤ Ip < I L , and 48V < Up ≤ 57V, when it is determined that the output power P P is greater than the preset power, it means that the output power of the second rectification module exceeds 80% of the rated power, and the output load rate is too high. To protect the second rectification module, the second monitoring unit reduces the output voltage of the second rectification module at the next moment;. If the obtained output power P P is less than or equal to the preset power, no operation is performed. While making full use of the over-aged first rectification module and the first monitoring unit, the output load of the second rectification module is reduced to protect its service life. In addition, setting 0.95*I L ≤ Ip < I L , and the condition of 48V < Up ≤ 57V effectively realizes the transitional replacement, greatly reduces the workload of the first rectification module, extends its service life, ensures that the battery pack is not in a long-term charging state, and protects the service life of the battery pack.

[0101] In this embodiment, when I L ≤ Ip, and 48V < Up ≤ 57V, the output current of the second rectification module is greater than the load current, and the excess part will charge the battery pack. The long-term charging state of the battery pack will affect its service life. Therefore, the second monitoring unit makes corresponding adjustment processing on the output voltages of multiple second rectification modules at the next moment, making the adjusted output voltage lower than the output voltage at the current moment, making full use of the old first rectification module and the first monitoring unit, and also ensuring that the battery pack is not in a long-term charging state, protecting the service life of the battery pack.

[0102] In this embodiment, when Ip < 0.95*I L , and 48V < Up ≤ 57V, if it is determined that the output power P pIf the output power P is greater than the preset power, it means that the output power of the second rectifier module is too large. To ensure the service life of the second rectifier module, the second monitoring unit reduces the output voltage of the second rectifier modules at the next moment, thereby reducing the output power of the second rectifier module. p If the output power P is less than 95% of the preset power, the output power of the second rectifier module should be increased, thereby increasing the proportion of the output power of the second rectifier module in the overall output power, reducing the output power of the first rectifier module, reducing the workload of the first rectifier module, and effectively achieving transition replacement. Therefore, the second monitoring unit increases the output voltage of multiple second rectifier modules at the next moment; if it is determined that the output power P p If the power is greater than 95% of the preset power and less than the preset power, no operation is performed.

[0103] In this embodiment, when the second monitoring unit detects that the output voltage Up of the second rectifier module is ≤ 48V and the mains power is normal, the output voltage of the second rectifier module is adjusted to 48V. The mains power is then regulated by the rectifier module and transmitted to the busbar. If the output voltage of the second rectifier module remains at 48V for a period exceeding a preset time, the first rectifier module is indicated as damaged, and an alarm signal is generated. The preset time is manually set and can be 30 minutes. Specifically, this occurs after the battery pack has been discharged for a period of time and is in a charging state. When the second monitoring unit detects that the output voltage of the second rectifier module is less than or equal to the busbar voltage of 48V, the second monitoring unit adjusts the output voltage of the second rectifier module to 48V to maintain normal operation. At this time, if the first rectifier module is not completely damaged, the output voltage of the first rectifier module (the output voltage of the entire system, including the first and second rectifier modules) will exceed 48V within the preset time. If the overall output voltage does not exceed 48V within the preset time, that is, the output voltage remains at 48V for longer than the preset time, the first rectifier module is not outputting voltage, indicating that the first rectifier module is completely damaged, and an alarm signal is generated.

[0104] In this embodiment, when the second monitoring unit determines that the input current of the communication load, the output voltage and output current of the multiple second rectifier modules, and the busbar voltage obtained at the current moment meet the adjustment conditions, the output voltage of the multiple second rectifier modules at the next moment is adjusted accordingly. Compared to the prior art method of replacing a new rectifier module, monitoring unit, and plug-in frame or connecting a smart adapter in series after a power outage, the present application installs a second rectifier module and a second monitoring unit and sets a certain control algorithm to effectively achieve excessive replacement of the first rectifier module while reducing the workload of the first rectifier module and protecting the service life of the second rectifier module and the battery pack, thereby avoiding the problems of long engineering time caused by replacing new rectifier modules and plug-in frames in the prior art, as well as the high cost of connecting adapters in series.

[0105] Figure 5This is a schematic diagram of the structure of an electronic device provided by this application. Figure 5 As shown, the electronic device 50 includes: a processor 51, a memory 52, and a communication interface 53; wherein the memory 52 is used to store executable instructions of the processor 51; the processor 51 is configured to execute the technical solution in any of the aforementioned method embodiments by executing the executable instructions.

[0106] Optionally, the memory 52 can be independent or integrated with the processor 51.

[0107] Optionally, when the memory 52 is a device independent of the processor 51 , the electronic device 50 may further include: a bus for connecting the above devices.

[0108] The electronic device is used to execute the technical solution in any of the aforementioned method embodiments, and its implementation principles and technical effects are similar and will not be repeated here.

[0109] An embodiment of the present application further provides a readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the technical solution provided by any of the aforementioned embodiments is implemented.

[0110] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the technical solution provided by any of the aforementioned method embodiments.

[0111] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power conversion device, characterized in that: include: A first power supply device and a second power supply device connected in parallel; wherein the first power supply device includes a first monitoring unit and a plurality of first rectifier modules; the second power supply device includes a second monitoring unit and a plurality of second rectifier modules; the plurality of first rectifier modules and the plurality of second rectifier modules are respectively connected to a communication load via a busbar; The second monitoring unit is configured to, upon determining that the input current of the communication load, the output voltages and the output currents of the plurality of second rectifier modules, and the busbar voltage obtained at the current moment meet an adjustment condition, perform corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at the next moment; The second monitoring unit is specifically configured to: when the bus voltage is 48V and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the multiple second rectifier modules satisfy Ip < 0.95 I L , and when 48V < Up ≤ 57V, determine whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than a preset power; If it is determined that the output power Pp is greater than the preset power, the output voltages of the plurality of second rectifier modules at the next moment are adjusted accordingly so that the adjusted output voltages are lower than the output voltage, thereby reducing the output power of the second rectifier modules; If it is determined that the output power Pp is less than 95% of the preset power, the output voltages of the multiple second rectifier modules at the next moment are adjusted accordingly so that the adjusted output voltage is higher than the output voltage, thereby increasing the proportion of the output power of the second rectifier module in the overall output power and reducing the output power of the first rectifier module.

2. The power conversion device according to claim 1, characterized in that The second monitoring unit is specifically configured to: When the busbar voltage is 48V and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the multiple second rectification modules satisfy 0.95 I L ≤ Ip < I L , and when 48V < Up ≤ 57V, it is determined whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than the preset power; When it is determined that the output power Pp is greater than the preset power, the output voltages of the plurality of second rectifier modules at the next moment are adjusted accordingly so that the adjusted output voltages are lower than the output voltage.

3. The power conversion device according to claim 1, wherein: The second monitoring unit is specifically configured to: When the busbar voltage is 48V and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the plurality of second rectification modules satisfy I L ≤Ip, and when 48V < Up ≤ 57V, perform corresponding adjustment processing on the output voltage of the plurality of second rectification modules at the next moment so that the adjusted output voltage is lower than the output voltage.

4. The power conversion device according to any one of claims 2 or 3, characterized in that: The preset power is 80% of the rated power corresponding to the multiple second rectifier modules.

5. The power conversion device according to any one of claims 1, characterized in that: The second monitoring unit is specifically configured to: When it is determined that the duration for which the output voltages of the plurality of second rectifier modules are equal to 48V is greater than a preset time, an alarm signal is generated.

6. A combined switching power supply, characterized in that: include: AC power distribution equipment, power conversion equipment and DC power distribution equipment unit; wherein the power conversion equipment is the power conversion equipment according to any one of claims 1 to 5.

7. A power conversion processing method, characterized in that: Applicable to power conversion equipment units, including: The second monitoring unit determines whether the adjustment condition is met based on the input current of the communication load, the output voltage and output current of the plurality of second rectifier modules, and the obtained busbar voltage obtained at the current moment; When the second monitoring unit determines that the adjustment condition is met, the second monitoring unit performs corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at the next moment; The second monitoring unit determines whether an adjustment condition is met based on the input current of the communication load, the output voltage and the output current of the plurality of second rectifier modules, and the acquired busbar voltage, including: The second monitoring unit determines whether the output power Pp obtained according to the output voltage Up and the output current Ip is greater than a preset power when the bus voltage is 48V and it is determined that the input current I of the communication load obtained at the current moment L , the output voltages Up and output currents Ip of the multiple second rectification modules satisfy Ip < 0.95 I L , and when 48V < Up ≤ 57V When the second monitoring unit determines that the adjustment condition is met, the second monitoring unit performs corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at the next moment, including: If the second monitoring unit determines that the output power Pp is greater than the preset power, the output voltage of the plurality of second rectifier modules is adjusted accordingly at a next moment, so that the adjusted output voltage is lower than the output voltage, thereby reducing the output power of the second rectifier module; If the second monitoring unit determines that the output power Pp is less than 95% of the preset power, it adjusts the output voltages of the multiple second rectifier modules at the next moment accordingly so that the adjusted output voltage is higher than the output voltage, increases the proportion of the output power of the second rectifier module in the overall output power, and reduces the output power of the first rectifier module.

8. The power conversion processing method according to claim 7, characterized in that: The second monitoring unit determines whether an adjustment condition is met based on the input current of the communication load, the output voltage and the output current of the plurality of second rectifier modules, and the acquired busbar voltage, including: When the bus voltage is 48V, and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the multiple second rectification modules satisfy 0.95 I L ≤ Ip < I L , and when 48V < Up ≤ 57V, it is determined whether the output power Pp obtained according to the output voltage Up and output current Ip is greater than the preset power; When the second monitoring unit determines that the adjustment condition is met, the second monitoring unit performs corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at the next moment, including: When the second monitoring unit determines that the output power Pp is greater than the preset power, the second monitoring unit performs corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at the next moment, so that the adjusted output voltage is lower than the output voltage.

9. The power conversion processing method according to claim 7, characterized in that: When determining that the adjustment condition is met, the second monitoring unit performs corresponding adjustment processing on the output voltages of the plurality of second rectifier modules at a next moment, including: The second monitoring unit, when the bus voltage is 48V and it is determined that the input current I of the communication load obtained at the current moment L , the output voltage Up and output current Ip of the multiple second rectification modules satisfy I L ≤ Ip, and when 48V < Up ≤ 57V, performs corresponding adjustment processing on the output voltage of the multiple second rectification modules at the next moment, so that the adjusted output voltage is lower than the output voltage.

10. The power conversion processing method according to claim 8 or 9, characterized in that: The preset power is 80% of the rated power corresponding to the multiple second rectifier modules.

11. The power conversion processing method according to any one of claim 7, characterized in that: Also includes: The second monitoring unit generates an alarm signal when determining that the output voltage of the plurality of second rectifier modules is equal to 48V for a duration greater than a preset time.

12. An electronic device, characterized in that: include: Processor, memory, communication interface; The memory is used to store executable instructions executable by the processor; The processor is configured to execute the power conversion processing method according to any one of claims 7 to 11 by executing the executable instructions.

13. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the power conversion processing method according to any one of claims 9 to 11 is implemented. 14 . A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the power conversion method according to claim 9 .

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