Method, apparatus, device, medium, and product for power control of an electrical energy router

Abstract

The application relates to a power control method, device, equipment, medium and product of an electric energy router, the method comprising: determining a thermal state of a power device according to electrical operation data and temperature data; determining a to-be-transferred power amount and initiating a reconstruction request to each adjacent power device in the case that the thermal state exceeds a preset thermal bearing capacity; determining a decision scheme according to the to-be-transferred power amount and each bidding scheme fed back by each adjacent power device based on the reconstruction request; and issuing the decision scheme to each target power device, so that each target power device outputs a target power increment; and controlling the power device to output a power reduced by the to-be-transferred power amount. The application can realize the cooperation of thermal management and power routing control, so as to improve the thermal balance degree and prolong the service life of the electric energy router.

Description

Technical Field

[0001] This application relates to the field of power grid technology, and in particular to a power control method, apparatus, device, medium and product for a power router. Background Technology

[0002] Power routers are core devices in the energy internet and / or new power systems, enabling flexible conversion, distribution, and scheduling of electrical energy. They are crucial carriers for the efficient integration of distributed renewable energy. With the advancement of the "dual-carbon" goal, high power density and modular multi-port designs have become the mainstream for power routers. This results in the integration of numerous high-frequency, high-power power electronic conversion modules. During operation, the power losses of these modules are converted into significant amounts of heat. Therefore, thermal management directly determines the reliability and lifespan of the power router.

[0003] Currently, thermal management and power routing control are two independent control systems in power routers. Power routing control allocates power to each power electronic conversion module, but uneven power distribution can lead to thermal imbalance, accelerating the aging of power electronic conversion modules where localized heat accumulation occurs and reducing the router's lifespan. Thermal management typically activates the cooling system after the temperature exceeds a threshold. Therefore, thermal management and power routing control cannot work in close coordination to achieve thermal equilibrium, severely impacting the router's lifespan. Summary of the Invention

[0004] Therefore, it is necessary to provide a power control method, device, equipment, medium, and product for power routers that can achieve synergy between thermal management and power routing control to improve thermal balance and extend the service life of power routers, in order to address the aforementioned technical problems.

[0005] In a first aspect, this application provides a power control method for a power router. The power router includes multiple electrically connected power devices. The method is applied to any one of the power devices and includes: acquiring electrical operating data and temperature data of the power devices; determining the thermal state of the power devices based on the electrical operating data and temperature data; determining the amount of power to be transferred when the thermal state exceeds a preset heat tolerance capacity, and initiating a reconfiguration request to each adjacent power device; determining a decision scheme based on the amount of power to be transferred and each bidding scheme fed back by each adjacent power device based on the reconfiguration request; wherein each bidding scheme is generated by the corresponding adjacent power device based on its own receiveable power increment and the predicted temperature rise after receiving the power increment, and the decision scheme includes a target power device selected from each adjacent power device and a target power increment for each target power device, the sum of each target power increment being the amount of power to be transferred; distributing the decision scheme to each target power device to increase the power output of each target power device by the target power increment; and controlling the power output of the power devices to decrease the amount of power to be transferred.

[0006] In one embodiment, determining the thermal state of a power device based on electrical operating data and temperature data includes: determining the power loss of the power device based on the electrical operating data; and determining the chip junction temperature of the power device based on the power loss and temperature data; wherein the chip junction temperature is used to characterize the thermal state of the power device.

[0007] In one embodiment, determining the chip junction temperature of a power device based on power loss and temperature data includes: inputting the power loss and temperature data into a preset thermal resistance network model to obtain the chip junction temperature of the power device.

[0008] In one embodiment, a decision scheme is determined based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback. This includes: constructing an objective function based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback; and determining a decision scheme based on the objective function. The objective function aims to minimize the overall power transfer cost of the power router, and the overall power transfer cost is determined based on the maximum predicted temperature rise, total efficiency loss, and total number of switching actions required for power transfer of each target power device.

[0009] In one embodiment, the power router further includes a coordinator electrically connected to each power device, which determines a decision scheme based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request. This includes: sending a reconfiguration request to the coordinator; and after receiving an execution instruction sent by the coordinator, determining a decision scheme based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request. The execution instruction is sent by the coordinator to the power device corresponding to the second reconfiguration request, which is selected from each first reconfiguration request according to preset indicators. Each first reconfiguration request is a request with resource contention among the reconfiguration requests received by the coordinator.

[0010] In one embodiment, controlling the power output of the power device to reduce the amount of power to be transferred includes: controlling the power conversion unit in the power device to perform power path switching so that the power output of the power device reduces the amount of power to be transferred.

[0011] Secondly, this application also provides a power control device for a power router, wherein the power router includes multiple electrically connected power devices, the device is applied to any one of the power devices, and the device includes:

[0012] The data acquisition module is used to acquire electrical operating data and temperature data of the power equipment;

[0013] The first determining module is used to determine the thermal state of the power equipment based on electrical operating data and temperature data;

[0014] The request initiation module is used to determine the amount of power to be transferred when the thermal state exceeds the preset thermal tolerance capacity, and to initiate a reconfiguration request to each adjacent power device.

[0015] The second determining module is used to determine a decision scheme based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback. Each bidding scheme is generated by the corresponding adjacent power device based on its own receiveable power increment and the predicted temperature rise after receiving the power increment. The decision scheme includes the target power device selected from each adjacent power device and the target power increment of each target power device. The sum of each target power increment is the amount of power to be transferred.

[0016] The scheme distribution module is used to distribute the decision scheme to each target power device, so that the output power of each target power device increases by the target power increment; and,

[0017] The output control module is used to control the power output of the power device to reduce the amount of power to be transferred.

[0018] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method provided in the first aspect.

[0019] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method provided in the first aspect.

[0020] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method provided in the first aspect.

[0021] The aforementioned power control method, device, equipment, medium, and product for a power router involves a power device determining its thermal state based on its electrical operation and temperature data. If the thermal state exceeds a preset heat tolerance capacity, it indicates localized overheating. In this case, a reconfiguration request is initiated to each adjacent power device. Each adjacent power device generates a bidding scheme based on its receiveable power increment and the predicted temperature rise after receiving the power increment, and feeds back the bidding scheme to the power device that sent the reconfiguration request. The power device determines a decision scheme based on the amount of power to be transferred and the bidding schemes of each adjacent power device. The execution of the decision scheme results in the sum of the target power increments of each target power device in the decision scheme being the amount of power to be transferred. Simultaneously, the output power of the power device requesting the reconfiguration request is reduced to decrease the amount of power to be transferred, thus achieving power transfer. Therefore, this embodiment, in the event of localized overheating, reduces the heat generated by the power device sending the reconfiguration request by transferring power, thereby alleviating the localized overheating problem, improving the thermal balance of the power router, and extending the service life of the power router. Therefore, this embodiment, based on the coordinated control of thermal management and power routing control, fundamentally improves the thermal balance of the power router compared to simply relying on the heat dissipation system, which is more conducive to extending the service life of the power router. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a power router in one embodiment;

[0024] Figure 2 This is a flowchart illustrating a power control method for an electric router in one embodiment;

[0025] Figure 3 This is a flowchart illustrating the thermal state determination step in one embodiment;

[0026] Figure 4 This is a flowchart illustrating the decision-making process in one embodiment.

[0027] Figure 5 This is a flowchart illustrating the decision-making process in one embodiment.

[0028] Figure 6 This is a flowchart illustrating the power control steps in one embodiment;

[0029] Figure 7 This is a structural block diagram of the power control device of a power router in one embodiment;

[0030] Figure 8 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0033] In one embodiment, a power router is provided, see [link to relevant documentation]. Figure 1 The power router includes multiple electrically connected power devices and a coordinator electrically connected to each power device. Adjacent power devices are electrically connected via copper busbars to form a reconfigurable power exchange network. Furthermore, adjacent power devices communicate bidirectionally via a communication bus. Each power device includes a power conversion unit, a control unit, and a temperature acquisition unit. Specifically:

[0034] The power conversion unit (PCU) is responsible for AC-DC and DC-DC power conversion to meet different power quality requirements. The PCU is a converter topology composed of multiple power devices, and the specific topology (e.g., three-phase bridge rectifier topology and Buck-Boost chopper topology) can be selected based on the port type of the power router (e.g., AC ports and DC ports). The PCU can also receive control signals from the control unit in the power equipment, thereby adjusting the switching duty cycle or switching timing of the power devices to control the output power.

[0035] Temperature acquisition units are used to collect temperature data from key heat-generating components in power equipment (e.g., power devices in power conversion units). These units form a distributed temperature sensing network, enabling comprehensive and real-time temperature acquisition. High-precision thermocouples or thermistors can be used for the temperature acquisition units. Depending on the internal heat distribution of the power equipment, the units can be deployed on the heat sink substrate of the power device, on the surface of magnetic components, and in the vicinity of the bus capacitors. Each power device has at least three temperature acquisition units deployed to ensure comprehensive temperature monitoring of key heat-generating components. The temperature data output from the acquisition units is transmitted to the analog input interface of the control unit within the power equipment.

[0036] The control unit is the control center of each power device, possessing data acquisition, processing, and communication control capabilities. The control unit includes analog signal acquisition interfaces, digital input / output interfaces, and a communication interface. The analog signal acquisition interface receives analog signals from the power devices, including temperature data output from the temperature acquisition unit and electrical operating data (e.g., output current and output voltage) from the power conversion unit, and converts the acquired analog signals into digital signals for subsequent calculations. The digital input / output interface outputs control signals to the switching devices of the power conversion unit, enabling adjustment of the switching duty cycle or switching timing of the power devices. The communication interface is used for data exchange with adjacent power devices and the coordinator, facilitating data transmission.

[0037] The coordinator establishes a connection with each power device through a communication bus. The core function of the coordinator is to monitor the reconfiguration requests of the power devices and to perform arbitration when resource conflicts occur, so as to avoid the final decision solution being unable to be executed due to resource conflicts.

[0038] In one exemplary embodiment, a power control method for a power router is provided, which can be applied to... Figure 1 The power device in the context refers specifically to the control unit within the power device, such as... Figure 2 As shown, the method includes:

[0039] S210 acquires electrical operating data and temperature data of power devices.

[0040] The electrical operating data may include the output current and output voltage of the power conversion unit in the power equipment at the current moment. Of course, other data may also be included, which is not limited here.

[0041] Among them, the temperature data is the temperature data collected by the temperature acquisition unit in the power device from the power conversion unit at the current moment.

[0042] S220 determines the thermal state of power equipment based on electrical operating data and temperature data.

[0043] The thermal state of a power device can be understood as the thermal health state of the power conversion unit within the power device.

[0044] S230: When the thermal condition exceeds the preset thermal tolerance, determine the amount of power to be transferred and initiate a reconfiguration request to each adjacent power device.

[0045] If the thermal condition exceeds the preset thermal tolerance, it indicates that the power device has experienced localized overheating, requiring power network reconfiguration to transfer the excessive output power of the power device to adjacent power devices.

[0046] The power to be transferred can be understood as the total output power that the power device needs to transfer to an adjacent power device. Specifically, the power to be transferred can be determined based on the difference between the current output power and the maximum allowable output power of the power conversion unit. For example, the power to be transferred is greater than or equal to the difference between the current output power and the maximum allowable output power of the power conversion unit.

[0047] In this process, a reconfiguration request is initiated to each adjacent power device, thereby triggering the reconfiguration of the power network. The power device that initiates the reconfiguration request can be referred to as the initiating device in the following text.

[0048] The reconfiguration request sent by the initiating device may include the amount of power to be transferred and its thermal status, as well as the device identifier, current load power, and timestamp of the initiating device. The reconfiguration request can be broadcast to all adjacent power devices via the communication bus.

[0049] S240, determine the decision scheme based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback.

[0050] Each bidding proposal is generated by the corresponding adjacent power device based on its own received power increment and the predicted temperature rise after receiving the power increment.

[0051] Specifically, after receiving a reconfiguration request, adjacent power devices determine their current available power margin based on their maximum allowable output power and current output power; determine their thermal state based on their electrical operation and temperature data; determine their own acceptable power increment based on their current available power margin and thermal state; determine the predicted temperature rise caused by receiving this power increment; and then generate a bidding proposal including the power increment and predicted temperature rise, which is then fed back to the initiating device.

[0052] The predicted temperature rise can be predicted by using the preset thermal resistance network model mentioned below to predict the chip junction temperature after receiving the power increment. The difference between the chip junction temperature and the initial temperature of the adjacent power device is used as the predicted temperature rise. Of course, other methods can also be used to determine the predicted temperature rise, which are not limited here.

[0053] Among them, the adjacent power devices of the feedback bidding scheme can be referred to as response devices.

[0054] Of course, in addition to power increments and predicted temperature rise, the bidding proposal can also include the device identifier, thermal status, currently available power margin, and device priority of the responding device, which is preset by the coordinator.

[0055] The decision scheme includes the target power device selected from each adjacent power device and the target power increment of each target power device, and the sum of the target power increments is the power to be transferred.

[0056] It is evident that after receiving each bidding proposal, the initiating device determines a decision scheme based on each bidding proposal and the amount of power to be transferred. The decision scheme includes each target power device that needs to perform power reception and the target power increment that each target power device needs to receive.

[0057] S250 distributes the decision scheme to each target power device so that the output power of each target power device increases by the target power increment.

[0058] In this process, the initiating device can broadcast the decision scheme to each target power device, and each target power device can control its output power to increase the target power increment corresponding to that target power device according to the decision scheme.

[0059] The sum of the target power increments of each target power device is the amount of power to be transferred.

[0060] S260 controls the power output of the power device to reduce the amount of power to be transferred.

[0061] Specifically, the output power of the power conversion unit in the control power device is reduced to reduce the amount of power to be transferred.

[0062] The aforementioned power control method for a power router involves the power device determining its thermal state based on its electrical operating data and temperature data. If the thermal state exceeds a preset heat tolerance capacity, it indicates localized overheating. In this case, a reconfiguration request is initiated to each adjacent power device. Each adjacent power device generates a bidding scheme based on its receiveable power increment and the predicted temperature rise after receiving the power increment, and feeds back the bidding scheme to the power device that sent the reconfiguration request. The power device then determines a decision scheme based on the amount of power to be transferred and the bidding schemes of each adjacent power device. The execution of this decision scheme results in the sum of the target power increments of each target power device in the decision scheme being equal to the amount of power to be transferred. Simultaneously, the output power of the power device requesting the reconfiguration request is reduced to decrease the amount of power to be transferred, thus achieving power transfer. Therefore, this embodiment, in the event of localized overheating, reduces the heat generated by the power device sending the reconfiguration request by transferring power, thereby alleviating the localized overheating problem, improving the thermal balance of the power router, and extending the service life of the power router. Therefore, this embodiment, based on the coordinated control of thermal management and power routing control, fundamentally improves the thermal balance of the power router compared to simply relying on the heat dissipation system, which is more conducive to extending the service life of the power router.

[0063] Based on the technical solutions provided in the above embodiments, an optional embodiment is provided, in which the thermal state determination step in S220 is refined.

[0064] See Figure 3 The detailed steps for determining the thermal state include:

[0065] S310 determines the power loss of power equipment based on electrical operating data.

[0066] Specifically, the real-time power loss of the power conversion unit can be calculated based on its output current and output voltage, combined with its topology and power device parameters. This power loss is then used as the power loss of the power device. The output current reflects the load level of the power conversion unit.

[0067] Power loss includes switching loss and conduction loss of power devices. Switching loss is calculated based on switching frequency, switching voltage and switching current, while conduction loss is calculated based on the on-state voltage drop and on-state current of the power devices.

[0068] Among them, power loss reflects the heat intensity of power equipment.

[0069] S320 determines the chip junction temperature of power devices based on power loss and temperature data.

[0070] Among them, the chip junction temperature is used to characterize the thermal state of power devices.

[0071] Understandably, the chip junction temperature is the actual operating temperature of the PN junction of the transistor inside the chip. It is the hottest point on the chip and a core indicator that determines the chip's performance, lifespan, and safety.

[0072] In an optional implementation, the chip junction temperature determination step in S320 may include: inputting power loss and temperature data into a preset thermal resistance network model to obtain the chip junction temperature of the power device.

[0073] The preset thermal resistance network model can be, but is not limited to, the Foster model.

[0074] In practical scenarios, before inputting power loss and temperature data into the preset thermal resistance network model, the model parameters can be configured. Specifically, the model parameters can be configured using the following calculation formula:

[0075]

[0076]

[0077]

[0078] In the formula, Let K be the parameter vector formed by the model parameters at time K. The temperature data at time K, The system observation data at time K includes historical temperature data corresponding to time points before time K and real-time power loss at time K. Let K be the algorithm gain matrix at time K. Let T be the estimated error covariance matrix at time K, and T be the transpose sign. The forgetting factor is set appropriately to give higher weight to the data collected at time K in the preset thermal resistance network model, thereby tracking the slow time-varying characteristics of each parameter (e.g., thermal resistance changes caused by device aging).

[0079] As can be seen, the model parameters of the preset thermal resistance network model will change rather than remain constant, which is consistent with the actual situation. Therefore, the thermal field distribution in the actual situation will also change, thus improving the accuracy of the preset thermal resistance network model in determining the chip junction temperature.

[0080] Understandably, if the chip junction temperature is greater than the preset temperature threshold, it indicates that the thermal state exceeds the preset thermal tolerance. If the chip junction temperature is less than or equal to the preset temperature threshold, it indicates that the thermal state does not exceed the preset thermal tolerance.

[0081] In practical scenarios, in addition to the chip junction temperature mentioned above, the maximum temperature difference between various temperature measurement points in the power device can be calculated to reflect the heat intensity of the internal heat distribution of the power device. Furthermore, the thermal health coefficient can be determined based on historical temperature profiles and the number of thermal cycles, reflecting the degree of thermal performance degradation of the power device due to thermal aging.

[0082] In this embodiment, the thermal state of the power device is characterized by the chip junction temperature, which can improve the accuracy of the thermal state. Moreover, based on power loss and temperature data, rather than just temperature data, the accuracy of the chip junction temperature can be improved, thereby improving the accuracy of the judgment of local overheating problems.

[0083] Based on the technical solutions provided in the above embodiments, an optional embodiment is provided, in which the decision scheme determination step in S240 is refined.

[0084] See Figure 4 The detailed steps for determining the decision-making plan include:

[0085] S410, construct the objective function based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback.

[0086] The objective function aims to minimize the overall power transfer cost of the power router. The overall power transfer cost is determined based on the maximum predicted temperature rise, total efficiency loss, and total number of switching actions required for power transfer of each target power device.

[0087] For example, the objective function can be expressed as follows:

[0088]

[0089] In the formula, To optimize the objective, This is the set of predicted temperature rises from the bidding proposals of each responding device. S represents the maximum predicted temperature rise among all predicted temperature rises. action This indicates whether the switching device needs to be activated. 1 indicates that activation is required, and 0 indicates that activation is required. Activation includes opening and closing actions. This refers to the total number of switching operations required for power transfer, which includes either an increase or decrease in output power. The total efficiency loss caused by power transfer is the sum of the changes in path efficiency due to power path switching. , and These are pre-defined weighting coefficients used to weigh the importance of the maximum predicted temperature rise, the total number of switching actions required for power transfer, and the total efficiency loss. For example, if thermal equilibrium is emphasized, the weighting coefficient can be increased. The value of can be increased if the focus is on reducing mechanical wear. The value of .

[0090] S420, Determine the decision scheme based on the objective function.

[0091] In real-world scenarios, the initiating device can solve the above objective function using a multi-objective optimization algorithm (e.g., a non-dominated sorting genetic algorithm), select the Pareto optimal solution from all feasible power allocation schemes, and then determine the decision scheme based on the Pareto optimal solution.

[0092] In this embodiment, an objective function is constructed based on the amount of power to be transferred and each bidding scheme. The objective function aims to minimize the overall power transfer cost of the power router. The overall power transfer cost is determined based on the maximum predicted temperature rise, total efficiency loss, and the total number of switching actions required for power transfer of each target power device. Therefore, by performing power transfer based on the decision scheme determined by the objective function, the overall power transfer cost can be minimized, thereby reducing the maximum predicted temperature rise, total efficiency loss, and the total number of switching actions required for power transfer, thus meeting the requirements of power transfer.

[0093] Based on the technical solutions provided in the above embodiments, an optional embodiment is provided, in which the decision scheme determination step in S240 is refined.

[0094] See Figure 5 The detailed steps for determining the decision-making plan include:

[0095] S510 sends a reconfiguration request to the coordinator.

[0096] As can be seen, the initiating device will send a reconfiguration request to the coordinator. If multiple power devices experience localized overheating, the coordinator will receive reconfiguration requests from multiple power devices.

[0097] After receiving the execution instruction sent by the coordinator, S520 determines the decision scheme based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request.

[0098] The execution instruction is sent by the coordinator to the power device corresponding to the second reconfiguration request. The second reconfiguration request is selected from each of the first reconfiguration requests according to preset indicators. Each of the first reconfiguration requests is a request with resource contention among the reconfiguration requests received by the coordinator.

[0099] The preset indicators may include equipment priority and / or thermal balance.

[0100] Specifically, after the coordinator receives multiple reconfiguration requests, it determines whether any requests involve resource contention and identifies the first reconfiguration request based on the result. For example, based on the device identifier of the initiating device in the reconfiguration request, the identifier data of each adjacent power device of that initiating device can be determined. If the identifier data of each adjacent power device corresponding to one reconfiguration request overlaps with that of another reconfiguration request, it indicates that these two reconfiguration requests are in resource contention, and these two reconfiguration requests are taken as the first reconfiguration requests. Then, the thermal balance after power transfer based on each first reconfiguration request is predicted, and the request with the highest thermal balance is selected as the second reconfiguration request. At this time, the power transfer work corresponding to the second reconfiguration request is executed first, and the power transfer work of other first reconfiguration requests can be suspended. Therefore, the coordinator sends an execution instruction to the power device corresponding to the second reconfiguration request. Of course, if there are multiple second reconfiguration requests with the highest thermal balance, the coordinator sends an execution instruction to the power device corresponding to the second reconfiguration request with the highest device priority.

[0101] The thermal uniformity can be predicted by predicting the standard deviation of the chip junction temperature of each power device after power transfer based on each first reconstruction request (e.g., by using a prediction model). The smaller the standard deviation, the higher the uniformity.

[0102] In this embodiment, to address the potential resource contention issue in the reconfiguration requests, the coordinator detects the first reconfiguration request with resource contention, selects the second reconfiguration request from among the first reconfiguration requests based on preset indicators, and sends an execution instruction to the power device corresponding to the second reconfiguration request so that the power device corresponding to the second reconfiguration request performs the power transfer work first. It can be seen that the resource contention problem is resolved through coordinator arbitration.

[0103] Based on the technical solutions provided in the above embodiments, an optional embodiment is provided, in which the power control steps in S260 are refined.

[0104] See Figure 6 The power control steps include:

[0105] S610 controls the power conversion unit in the power device to switch power paths so that the power output of the power device is reduced by the amount of power to be transferred.

[0106] The power conversion unit includes switching devices.

[0107] Specifically, for the initiating device, the process of controlling the power conversion unit in the power device to perform power path switching may include: the control unit generates a switching action command based on the amount of power to be transferred, and controls the switching device in the power conversion unit to perform a switching action at the zero current moment of the power conversion unit according to the switching action command, so as to realize the power path switching of the power conversion unit.

[0108] Similarly, the process of increasing the power output of each target power device by the target power increment may include: the target control unit in the target power device generates a switching action command according to the corresponding target power increment, and controls the target switching device in the target power conversion unit to perform a switching action at the zero current moment of the target power conversion unit in the target power device according to the switching action command, so as to realize the power path switching of the target power conversion unit.

[0109] Understandably, after the initiating device and the target power device switch power paths, the power network is reconstructed, thereby enabling power transfer.

[0110] Specifically, the switching devices in the power conversion unit are controlled to perform switching actions at the zero current moment of the power conversion unit. This can effectively avoid voltage spikes and current surges generated during the operation of the switching devices, and achieve seamless switching of the power path.

[0111] Of course, after the power path switching is completed, the control unit of the power device can also adjust the reference value of the internal voltage loop or current loop control to make the output power of the power device transition smoothly and avoid power fluctuations affecting the operational stability of the power router.

[0112] Among them, the switching device can be a solid-state switch, which is deployed between the power conversion unit and the electrical connection line. The solid-state switch adopts a backplane cross switch matrix composed of wide bandgap semiconductor devices, which has the characteristics of high frequency, low loss and fast switching. The control terminal of the solid-state switch is connected to the digital output interface of the control unit, and can receive the switching action command, i.e., control signal output by the control unit.

[0113] In this embodiment, by controlling the power conversion unit in the power device to switch power paths, efficient and stable power network reconstruction is achieved, thereby reducing the amount of power to be transferred from the power output of the power device as the initiating device and alleviating the local heat generation problem of the initiating device.

[0114] In real-world scenarios, communication between power devices and between power devices and the coordinator can utilize the Controller Area Network (CAN) Flexible Data Rate Protocol (FDR). This protocol features high real-time performance, high reliability, and large bandwidth, meeting the system's requirements for data transmission rate and latency.

[0115] The communication messages based on the above protocol adopt a unified standardized frame structure, which includes, in sequence, a frame start segment, an arbitration segment, a control segment, a data segment, a cyclic redundancy check (CRC) segment, and a frame end segment. Specifically, the frame start segment identifies the beginning of the message; the arbitration segment defines the message priority, ensuring priority transmission of urgent data (e.g., reconstruction requests, execution instructions); the control segment indicates the length of the data segment; the data segment encapsulates reconstruction requests, bidding schemes, or decision schemes, and its length is dynamically adjusted according to the type of encapsulated data; the CRC segment verifies the message data to ensure the accuracy of data transmission; and the frame end segment identifies the end of the message.

[0116] In a real-world scenario, after the power router is powered on, each power device needs to complete a self-test and initialize the control unit and temperature acquisition unit. The coordinator loads global configuration parameters, including preset temperature thresholds, weighting coefficients, and device priorities.

[0117] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0118] Based on the same inventive concept, this application also provides a power router power control device for implementing the power router power control method described above. The solution provided by this device is similar to the implementation described in the above method; therefore, the specific limitations in one or more power router power control device embodiments provided below can be found in the limitations of the power router power control method described above, and will not be repeated here.

[0119] In one exemplary embodiment, a power control device for a power router is provided. The power router includes multiple electrically connected power devices, and the device is applied to any of the power devices, such as... Figure 7 As shown, the device includes:

[0120] Data acquisition module 710 is used to acquire electrical operating data and temperature data of power equipment;

[0121] The first determining module 720 is used to determine the thermal state of the power equipment based on electrical operating data and temperature data;

[0122] The request initiation module 730 is used to determine the amount of power to be transferred when the thermal state exceeds the preset thermal tolerance capacity, and to initiate a reconfiguration request to each adjacent power device.

[0123] The second determining module 740 is used to determine a decision scheme based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback; wherein, each bidding scheme is generated by the corresponding adjacent power device based on its own receiveable power increment and the predicted temperature rise after receiving the power increment, and the decision scheme includes the target power device selected from each adjacent power device and the target power increment of each target power device, and the sum of each target power increment is the amount of power to be transferred.

[0124] The scheme distribution module 750 is used to distribute the decision scheme to each target power device, so that the output power of each target power device increases by the target power increment; and,

[0125] The output control module 760 is used to control the power output of the power device to reduce the amount of power to be transferred.

[0126] In one embodiment, the first determining module includes: a first determining unit, configured to determine the power loss of the power device based on electrical operating data; and a second determining unit, configured to determine the chip junction temperature of the power device based on the power loss and temperature data; wherein the chip junction temperature is used to characterize the thermal state of the power device.

[0127] In one embodiment, the second determining unit is specifically used to: input power loss and temperature data into a preset thermal resistance network model to obtain the chip junction temperature of the power device.

[0128] In one embodiment, the second determining module is specifically used to: construct an objective function based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request feedback; and determine a decision scheme based on the objective function; wherein the objective function takes minimizing the overall power transfer cost of the power router as the optimization objective, and the overall power transfer cost is determined based on the maximum predicted temperature rise, total efficiency loss and total number of switching actions required for power transfer of each target power device.

[0129] In one embodiment, the second determining module is specifically used to: send a reconfiguration request to the coordinator; after receiving the execution instruction sent by the coordinator, determine a decision scheme based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request; wherein, the execution instruction is sent by the coordinator to the power device corresponding to the second reconfiguration request, the second reconfiguration request is selected from each first reconfiguration request according to preset indicators, and each first reconfiguration request is a request with resource contention among the reconfiguration requests received by the coordinator.

[0130] In one embodiment, the output control module is specifically used to: control the power conversion unit in the power device to perform power path switching, so that the power output by the power device is reduced by the amount of power to be transferred.

[0131] Each module in the aforementioned power router power control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0132] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 8 As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a power control method for an electric power router.

[0133] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0134] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the power router power control method provided in the above embodiments.

[0135] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the power control method for a power router provided in the above embodiments.

[0136] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the power router power control method provided in the above embodiments.

[0137] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0138] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0139] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0140] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A power control method for an electric router, characterized in that, The power router includes multiple electrically connected power devices, and the method is applied to any one of the power devices, the method comprising: Acquire the electrical operation data and temperature data of the power equipment; The thermal state of the power equipment is determined based on the electrical operating data and the temperature data. If the thermal state exceeds the preset thermal tolerance, determine the amount of power to be transferred and initiate a reconfiguration request to each adjacent power device; A decision scheme is determined based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request; wherein, each bidding scheme is generated by the adjacent power device based on its own receiveable power increment and the predicted temperature rise after receiving the power increment, and the decision scheme includes the target power device selected from each adjacent power device and the target power increment of each target power device, and the sum of each target power increment is the amount of power to be transferred. The decision scheme is distributed to each of the target power devices, so that the power output of each target power device increases by the target power increment; and, Control the power output of the power device to reduce the amount of power to be transferred.

2. The method according to claim 1, characterized in that, Determining the thermal state of the power equipment based on the electrical operating data and the temperature data includes: Based on the electrical operating data, determine the power loss of the power equipment; The chip junction temperature of the power device is determined based on the power loss and the temperature data; wherein the chip junction temperature is used to characterize the thermal state of the power device.

3. The method according to claim 2, characterized in that, Determining the chip junction temperature of the power device based on the power loss and the temperature data includes: The power loss and temperature data are input into a preset thermal resistance network model to obtain the chip junction temperature of the power device.

4. The method according to any one of claims 1 to 3, characterized in that, The step of determining a decision scheme based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request includes: Based on the amount of power to be transferred and the bidding schemes of each adjacent power device based on the reconfiguration request, an objective function is constructed; Based on the objective function, determine the decision-making scheme; The objective function aims to minimize the overall power transfer cost of the power router. The overall power transfer cost is determined based on the maximum predicted temperature rise, total efficiency loss, and total number of switching actions required for power transfer of each target power device.

5. The method according to any one of claims 1 to 3, characterized in that, The power router further includes a coordinator electrically connected to each of the power devices. The step of determining a decision scheme based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request includes: Send a reconfiguration request to the coordinator; After receiving the execution instruction sent by the coordinator, a decision scheme is determined based on the amount of power to be transferred and the bidding schemes fed back by each adjacent power device based on the reconfiguration request; The execution instruction is sent by the coordinator to the power device corresponding to the second reconfiguration request. The second reconfiguration request is selected from each of the first reconfiguration requests according to preset indicators. Each of the first reconfiguration requests is a request with resource contention among the reconfiguration requests received by the coordinator.

6. The method according to any one of claims 1 to 3, characterized in that, The control of the power device output power to reduce the amount of power to be transferred includes: The power conversion unit in the power device is controlled to switch power paths so that the power output of the power device reduces the amount of power to be transferred.

7. A power control device for an electric router, characterized in that, The power router includes multiple electrically connected power devices, the device is applied to any one of the power devices, and the device includes: The data acquisition module is used to acquire electrical operating data and temperature data of the power equipment; The first determining module is used to determine the thermal state of the power equipment based on the electrical operation data and the temperature data; The request initiation module is used to determine the amount of power to be transferred when the thermal state exceeds the preset thermal tolerance capacity, and to initiate a reconfiguration request to each adjacent power device. The second determining module is used to determine a decision scheme based on the amount of power to be transferred and each bidding scheme fed back by each adjacent power device based on the reconfiguration request; wherein, each bidding scheme is generated by the adjacent power device based on its own receiveable power increment and the predicted temperature rise after receiving the power increment, and the decision scheme includes a target power device selected from each adjacent power device and a target power increment for each target power device, and the sum of each target power increment is the amount of power to be transferred; The scheme distribution module is used to distribute the decision scheme to each of the target power devices, so that the power output of each target power device increases by the target power increment; and, An output control module is used to control the power output of the power device to reduce the amount of power to be transferred.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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