Rapid charging method and system based on 1200V-SiC-MOS

Abstract

The invention relates to the technical field of semiconductor power transmission, and discloses a rapid charging method and system based on 1200V-SiC-MOS, and the method comprises the steps: obtaining the elastic load characteristics of a main transmission device in power transmission, and determining an auxiliary transmission assembly of a charging device in charging, so as to determine the transmittable power of each power transmission device; determining the load demand of the charging device according to the battery state of the to-be-charged equipment, and determining the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device; and performing elastic parallel connection on the auxiliary demand quantity based on each transmissible power to obtain an elastic interval of transmission power in each power transmission device of the auxiliary transmission assembly so as to perform master-slave parallel connection charging. According to the invention, different battery load states can be flexibly handled, the charging process can be accelerated, the flexibility and efficiency of power distribution are improved, and the elastic distribution of the output power in the rapid charging process of the charging device is realized.

Description

Technical Field

[0001] This application relates to the technical field of semiconductor power transmission, for example, to a fast charging method and system based on 1200V-SiC-MOS. Background Art

[0002] 1200V-SiC-MOS (1200V Silicon Carbide Metal-Oxide-Semiconductor) is a high-voltage metal-oxide-semiconductor field-effect transistor (MOSFET) based on silicon carbide (SiC) material. The SiC material has excellent thermal conductivity and high breakdown voltage capabilities, enabling SiC-MOSFET to operate stably in high-voltage, high-power, and high-temperature environments.

[0003] In traditional charging devices, the main transmission device usually undertakes most of the power transmission tasks, while the auxiliary transmission device often fails to fully exert its potential. This unbalanced power distribution can lead to an overloaded main transmission device, posing an overload risk and even affecting the stability and safety of the charging device. At the same time, due to inaccurate power scheduling, some auxiliary transmission devices are idle and unable to provide effective support during the charging process, not only reducing the overall charging efficiency but also increasing energy loss and heat load, thereby affecting the performance during the charging process.

[0004] Therefore, existing charging devices have the problem of unreasonable elastic distribution of output power during fast charging.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of this application. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a comprehensive review nor is it intended to identify key / important elements or delineate the scope of protection of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0007] The fast charging method, system, device, and storage medium based on 1200V-SiC-MOS in this disclosure solve the problem of unreasonable elastic distribution of output power in existing charging devices during fast charging.

[0008] An embodiment of this disclosure provides a fast charging method based on 1200V-SiC-MOS, and the method includes: Select the idle 1200V-SiC-MOS in the charging device as the main power transmission device of the charging device during charging; Obtain the elastic load characteristics of the main power transmission device during power transmission. Based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, determine the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device, so as to determine the transmissible power of each power transmission device in the auxiliary transmission components; Determine the load demand of the charging device according to the battery state of the device to be charged, and determine the auxiliary demand of the power transmission load in the main power transmission device according to the load demand and the load characteristics of the main power transmission device; Based on each transmissible power, perform elastic parallel connection on the auxiliary demand to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission components, so as to perform master-slave parallel charging on the device to be charged based on the elastic interval of each transmission power.

[0009] In some embodiments, obtaining the elastic load characteristics of the main power transmission device during power transmission includes: Collect the power transmission data of the main power transmission device; Extract the effective transmission power and power transmission margin of the main power transmission device from the power transmission data; Based on the effective transmission power and the power transmission margin, determine the elastic load characteristics of the main power transmission device during power transmission.

[0010] In some embodiments, determining the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device includes: Obtain the idle power of each power transmission device in the charging device; Determine the idle transmission capacity of each power transmission device through the idle power and the elastic load characteristics of the charging power; Take the power transmission devices with idle transmission capacity lower than the preset auxiliary transmission threshold as auxiliary transmission devices, so as to use all the auxiliary transmission devices as the auxiliary transmission components of the charging device during charging.

[0011] In some embodiments, determining the transmissible power of each power transmission device in the auxiliary transmission components includes: For each power transmission device in the auxiliary transmission components, obtain the idle transmission capacity and overload safety factor of the power transmission device; Based on the idle transmission capacity and the overload safety factor, determine the transmissible power in the power transmission device, so as to obtain the transmissible power of each power transmission device in the auxiliary transmission components.

[0012] In some embodiments, determining the auxiliary demand quantity of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device includes: Obtaining the current load information of the main transmission device; Extracting the load characteristics of the main transmission device from the current load information; Determining the auxiliary demand quantity of the power transmission load in the main transmission device through the load characteristics and the load demand.

[0013] In some embodiments, based on each available transmission power, performing elastic parallel connection on the auxiliary demand quantity to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission component, including: Performing equal current distribution on the auxiliary demand quantity to obtain the transmission power values of each power transmission device in the auxiliary transmission component; For each power transmission device in the auxiliary transmission component, obtaining the available transmission power in the power transmission device; Determining the elastic interval of the transmission power in the power transmission device according to the available transmission power and the transmission power value of the power transmission device, so as to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission component.

[0014] In some embodiments, the power transmission device is a 1200V silicon carbide metal oxide semiconductor field effect transistor.

[0015] The embodiment of the present disclosure provides a fast charging system based on 1200V-SiC-MOS, and the system includes: A selection module, configured to select an idle 1200V-SiC-MOS in the charging device as the main transmission device for the charging power in the charging device; A processing module, configured to obtain the elastic load characteristics of the main transmission device during power transmission, and determine the auxiliary transmission component in the charging device during charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, so as to determine the available transmission power of each power transmission device in the auxiliary transmission component; The processing module is further configured to determine the load demand of the charging device according to the battery state of the device to be charged, and determine the auxiliary demand quantity of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device; An execution module, configured to perform elastic parallel connection on the auxiliary demand quantity based on each available transmission power to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission component, so as to perform master-slave parallel charging on the device to be charged based on the elastic interval of each transmission power.

[0016] The embodiment of the present disclosure provides an electronic device, and the device includes at least one processor; and a memory communicatively connected to at least one processor; The memory stores instructions executable by at least one processor, and the instructions are executed by at least one processor to enable the at least one processor to execute the above-mentioned fast charging method based on 1200V-SiC-MOS.

[0017] An embodiment of the present disclosure provides a storage medium storing program instructions that, when running, execute the above-mentioned fast charging method based on 1200V-SiC-MOS.

[0018] The fast charging method, system, device, and storage medium based on 1200V-SiC-MOS provided by the embodiments of the present disclosure can achieve the following technical effects: In the embodiments of the present disclosure, the elastic parallel connection of the auxiliary demand is performed through each transferable power to obtain the elastic interval of the transfer power in each power transfer device of the auxiliary transfer component, and then the elastic intervals of each transfer power are used to perform master-slave parallel charging on the device to be charged; First, it is determined that the transferable power can identify that the power transfer device is in a low-load state, and the remaining capacity of the power transfer device is used to provide additional power support. When the main transfer device is heavily loaded, the auxiliary transfer device will automatically supplement the load to ensure that the power transfer capacity of the charging device is maximized at all times. In this process, the power distribution between the selected 1200V-SiC-MOS main transfer device and the auxiliary transfer device can be dynamically adjusted according to real-time requirements and elastic characteristics, thereby avoiding the risk of overload of a single device and optimizing the overall power transfer efficiency. The charging device can adjust the output power according to the load demand to achieve elastic power distribution, thereby increasing the charging rate and reducing the energy loss during power transfer, improving the overall charging efficiency; Then, it is determined that the auxiliary demand can clarify the specific power demand that the auxiliary transfer device should bear during the charging process. When the main transfer device is overloaded or heavily loaded, the auxiliary transfer device can provide the required supplementary power within its idle transfer capacity range. This power distribution mechanism effectively avoids damage to the main transfer device due to overload, and also optimizes the resource utilization of the charging device to ensure that each power transfer device can operate in its optimal working state. By elastically parallel adjusting the auxiliary demand, the charging device can not only flexibly cope with different battery load states, but also accelerate the charging process, improve the flexibility and efficiency of power distribution, and thus achieve elastic power distribution of the output power of the charging device during fast charging.

[0019] The above general description and the following description are only exemplary and explanatory and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and wherein: Figure 1 is a schematic flowchart of a fast charging method based on 1200V-SiC-MOS provided by an embodiment of the present disclosure; Figure 2 is a schematic flowchart of a method for determining the transmissible power provided by an embodiment of the present disclosure; Figure 3 is a schematic flowchart of a method for determining the elastic interval of the transmission power provided by an embodiment of the present disclosure; Figure 4 is a schematic structural diagram of a fast charging system based on 1200V-SiC-MOS provided by an embodiment of the present disclosure; Figure 5 is a schematic structural diagram of a fast charging device based on 1200V-SiC-MOS provided by an embodiment of the present disclosure. Detailed implementation manners

[0021] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings. The attached drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and systems may be shown in a simplified manner.

[0022] The terms "first", "second", etc. in the embodiments of the present disclosure are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0023] Unless otherwise specified, the term "plurality" means two or more.

[0024] In the embodiments of the present disclosure, the character " / " indicates that the front and rear objects are in an "or" relationship. For example, A / B means: A or B.

[0025] The term "and / or" is a description of the associated relationship of an object and indicates that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0026] The term "corresponding" may refer to an association relationship or a binding relationship. That A corresponds to B means there is an association relationship or a binding relationship between A and B.

[0027] The following will describe the fast charging method, system, device, and storage medium provided by the embodiments of the present disclosure based on a 1200V silicon carbide metal-oxide-semiconductor field effect transistor (1200V Silicon Carbide Metal-Oxide-Semiconductor, 1200V-SiC-MOS) with reference to the accompanying drawings.

[0028] Figure 1 It is a schematic flowchart of a fast charging method based on 1200V-SiC-MOS provided by the embodiments of the present disclosure.

[0029] Combined with Figure 1 As shown, the fast charging method based on 1200V-SiC-MOS may include: S101, select an idle 1200V-SiC-MOS in the charging device as the main power transmission device of the charging device during charging.

[0030] It should be noted that the above S101 may be to select an idle 1200V-SiC-MOS in the charging device as the main power transmission device of the charging device during charging when using the charging device to charge the device to be charged.

[0031] In this application, an idle semiconductor device refers to a semiconductor device that does not fully exert its maximum power transmission ability under the working load; the main power transmission device refers to the core device responsible for the main power transmission task in the charging device; specifically, when using the charging device to charge the device to be charged, select an idle 1200V-SiC-MOS (1200V silicon carbide metal oxide semiconductor field effect transistor) in the charging device as the main power transmission device of the charging device during charging.

[0032] It should be noted that in this application, the above idle semiconductor device is a 1200V silicon carbide metal oxide semiconductor field effect transistor.

[0033] S102, obtain the elastic load characteristics of the main power transmission device during power transmission, and determine the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, so as to determine the transmissible power of each power transmission device in the auxiliary transmission components.

[0034] In some embodiments, obtaining the elastic load characteristics of the main power transmission device during power transmission includes: Collect the power transmission data of the main transmission device; Extract the effective transmission power and power transmission margin of the main transmission device from the power transmission data; Determine the elastic load characteristics of the main transmission device in power transmission based on the effective transmission power and power transmission margin.

[0035] When specifically implemented, first, collecting the power transmission data of the main transmission device can be achieved in the following manner, that is: obtain the transmission power of the main transmission device corresponding to the idle semiconductor device in the charging device within a specified time period (for example, default is 1 month) from the console of the charging device, and the set of all transmission powers can be used as the power transmission data; then, extracting the effective transmission power and power transmission margin of the main transmission device from the power transmission data can be achieved in the following manner, that is: take the average value of all transmission powers in the power transmission data and the average value of the rated power as the effective transmission power of the main transmission device, and take the difference between the maximum value of all transmission powers in the power transmission data and the rated power as the power transmission margin of the main transmission device; finally, determining the elastic load characteristics of the main transmission device in power transmission through the effective transmission power and power transmission margin can be achieved in the following manner, that is: take the ratio of the power transmission margin to the effective transmission power as the elastic load characteristics of the main transmission device in power transmission.

[0036] It should be noted that in this application, the elastic load characteristics represent the range of transmission power that the load can adapt to and adjust under different power demands of the main transmission device; the power transmission data represents the power information during the operation of the power transmission system; the effective transmission power represents the power actually output by the power transmission device to the load and effectively utilized; the power transmission margin represents the maximum power increment that the power transmission device can withstand on the premise of ensuring safe operation.

[0037] In some embodiments, based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, determine the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device, including: Obtain the idle power of each power transmission device in the charging device; Determine the idle transmission capacity of each power transmission device through the idle power of each device and the elastic load characteristics of the charging power; Regard the power transmission devices with idle transmission capacity lower than the preset auxiliary transmission threshold as auxiliary transmission devices, and use all the auxiliary transmission devices as the auxiliary transmission components of the charging device during charging.

[0038] In specific implementation, first, the idle power of each power transmission device in the charging device can be obtained in the following manner: for each power transmission device in the charging device, the actual transmission power of the power transmission device is collected by using the power transmission monitoring module of the charging device, and the difference between the rated power and the actual transmission power of the power transmission device is used as the idle power of the power transmission device. Through the above method, the idle power of each power transmission device can be obtained; then, the idle transmission capacity of each power transmission device can be determined based on the elastic load characteristics of the idle power and the charging power in the following manner: for each power transmission device, the product of the idle power of the power transmission device and the elastic load characteristics of the charging power is used as the idle transmission capacity of the power transmission device. Through the above method, the idle transmission capacity of each power transmission device can be obtained; finally, the power transmission devices with idle transmission capacity lower than the preset auxiliary transmission threshold are used as auxiliary transmission devices, and then all the auxiliary transmission devices are used as the auxiliary transmission components of the charging device during charging in the following manner: the power transmission devices with idle transmission capacity lower than the preset auxiliary transmission threshold are used as auxiliary transmission devices, and the set of all auxiliary transmission devices is used as the auxiliary transmission components of the charging device during charging.

[0039] It should be noted that in this application, the auxiliary transmission component refers to a power transmission unit composed of multiple auxiliary transmission devices, and the auxiliary transmission device refers to a power transmission device with available idle power; the idle power refers to the remaining available power of the power transmission device when it is not operating at full load; the idle transmission capacity refers to the remaining available power of the power transmission device when it does not reach the rated power output.

[0040] In some embodiments, the process of determining the transmissible power of each power transmission device in the auxiliary transmission component can refer to Figure 2 , Figure 2 which is a schematic flow chart of determining the transmissible power provided by an embodiment of the present disclosure, and specifically may include: S1021, for each power transmission device in the auxiliary transmission component, obtain the idle transmission capacity and the overload safety factor of the power transmission device; S1022, determine the transmissible power in the power transmission device based on the idle transmission capacity and the overload safety factor to obtain the transmissible power in each power transmission device of the auxiliary transmission component.

[0041] It should be noted that in the present application, the transmissible power represents the power that the power transmission device can safely output under the current operating conditions; in specific implementation, first, for each power transmission device of the auxiliary transmission component, the idle transmission capacity and overload safety factor of the power transmission device can be obtained in the following manner, that is: for each power transmission device of the auxiliary transmission component, obtain the idle transmission capacity of the power transmission device. The overload safety factor represents the safety margin when the power transmission device operates beyond the rated power, that is, the ratio of the actual maximum output power to the rated maximum output power. The overload safety factor of the power transmission device can be obtained from the console of the charging device. Then, determine the transmissible power in the power transmission device through the idle transmission capacity and the overload safety factor. Furthermore, the transmissible power in each power transmission device of the auxiliary transmission component can be obtained in the following manner, that is: take the product of the idle transmission capacity and the overload safety factor as the transmissible power in the power transmission device. Through the above method, the transmissible power in each power transmission device of the auxiliary transmission component can be obtained.

[0042] S103. Determine the load demand of the charging device according to the battery state of the device to be charged, and determine the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device.

[0043] In some embodiments, determining the load demand of the charging device according to the battery state of the device to be charged may specifically include: Obtain the battery state of the device to be charged; Extract the load demand of the charging device according to the remaining power and the total power in the battery state.

[0044] It should be noted that in the present application, the load demand represents the target power supply of the charging device; in specific implementation, first, obtaining the battery state of the device to be charged can be achieved in the following manner, that is: obtain the remaining power and the total power of the device to be charged from the battery management module of the device to be charged, so as to take the set of the remaining power and the total power as the battery state of the device to be charged. This battery state represents the current operating parameters of the battery of the device to be charged. Then, extracting the load demand of the charging device according to the remaining power and the total power in the battery state can be achieved in the following manner, that is: take the difference between the total power and the remaining power as the load demand of the charging device.

[0045] In some embodiments, determining the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device includes: Obtain the current load information of the main transmission device; Extract the load characteristics of the main transmission device from the current load information; Determine the auxiliary demand of the power transmission load in the main transmission device through the load characteristics and the load demand.

[0046] It should be noted that in this application, the auxiliary demand represents the power demand that cannot be provided by the main transmission device when meeting the power demand of the device to be charged; the current load information represents the power transmission state of the main transmission device at the current moment; the load characteristic represents the load response law of the charging device under different working states.

[0047] In specific implementation, first, the current load information of the main transmission device can be obtained in the following way: obtain the actual load and the rated load of the main transmission device from the console of the charging device, and thus use the set of the actual load and the rated load as the current load information of the main transmission device; then, the load characteristic of the main transmission device can be extracted from the current load information in the following way: use the difference between the rated load and the actual load in the current load information as the load characteristic of the main transmission device; finally, the auxiliary demand of the power transmission load in the main transmission device can be determined by the load characteristic and the load demand in the following way: use the difference between the load demand and the load characteristic as the auxiliary demand of the power transmission load in the transmission device.

[0048] S104. Based on each available transmission power, perform elastic parallel connection on the auxiliary demand to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission assembly, so as to perform master-slave parallel charging on the device to be charged based on the elastic interval of each transmission power.

[0049] In some embodiments, the process of performing elastic parallel connection on the auxiliary demand based on each available transmission power to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission assembly can refer to Figure 3 , Figure 3 which is a schematic flowchart of a process for determining the elastic interval of the transmission power provided by an embodiment of the present disclosure, and specifically may include: S1041. Perform equal current distribution on the auxiliary demand to obtain the transmission power value of each power transmission device in the auxiliary transmission assembly; S1042. For each power transmission device in the auxiliary transmission assembly, obtain the available transmission power in the power transmission device; S1043. Determine the elastic interval of the transmission power in the power transmission device according to the available transmission power and the transmission power value of the power transmission device, so as to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission assembly.

[0050] It should be noted that in this application, the elastic interval represents the adjustable transmission power range of the power transmission device under safe operating conditions; the transmission power value represents the magnitude of the power that the power transmission device needs to transfer to the load within a specific time.

[0051] In specific implementation, first, the auxiliary demand is evenly distributed for current sharing, and the transmission power values of the respective power transmission devices in the auxiliary transmission component can be implemented in the following manner, that is, the number of power transmission devices in the auxiliary transmission component is counted as the distribution quantity, and the ratio of the auxiliary demand to the distribution quantity is used as the transmission power value of each power transmission device in the auxiliary transmission component; then, for each power transmission device in the auxiliary transmission component, the transmissible power in the power transmission device is obtained; finally, the elastic interval of the transmission power in the power transmission device is determined according to the transmissible power and the transmission power value of the power transmission device, and further, the elastic intervals of the transmission power in the respective power transmission devices of the auxiliary transmission component can be implemented in the following manner, that is: if the transmission power value of the power transmission device is greater than or equal to the transmissible power, then the transmissible power is used as the elastic interval of the transmission power in the power transmission device, and if the transmission power value of the power transmission device is less than the transmissible power, then the interval from the transmission power value of the power transmission device to the transmissible power is used as the elastic interval of the transmission power in the power transmission device. Through the above method, the elastic intervals of the transmission power in the respective power transmission devices of the auxiliary transmission component can be obtained.

[0052] In some embodiments, the master-slave parallel charging of the device to be charged is performed using the elastic intervals of the respective transmission powers, which can be implemented in the following manner, that is: a master-slave coordination control strategy (for example: master-slave game model) is adopted, so that the master transmission device provides the main charging power, and the auxiliary transmission component performs dynamic compensation when the power demand fluctuates, ensuring that each auxiliary transmission device in the auxiliary transmission component is within the elastic interval of the corresponding transmission power, improving the overall power utilization rate, reducing the thermal load of a single power transmission device, and improving the long-term stability of the charging device.

[0053] In some embodiments, the power transmission device is a 1200V silicon carbide metal oxide semiconductor field effect transistor.

[0054] The fast charging method based on 1200V-SiC-MOS provided by the present disclosure, when using a charging device to charge a device to be charged, selects an idle 1200V-SiC-MOS in the charging device as the main power transmission device of the charging device during charging; extracts the elastic load characteristics of the main power transmission device during power transmission, and screens out the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, and then determines the transmissible power of each power transmission device in the auxiliary transmission components; determines the load demand of the charging device according to the battery state of the device to be charged, and determines the auxiliary demand for the power transmission load in the main power transmission device according to the load demand and the load characteristics of the main power transmission device; performs elastic parallel connection on the auxiliary demand through each transmissible power to obtain the elastic range of the transmission power in each power transmission device of the auxiliary transmission components, and then uses the elastic range of each transmission power to perform master-slave parallel charging on the device to be charged.

[0055] It can be seen that in this application, the elastic parallel connection of the auxiliary demand is performed through each transmissible power to obtain the elastic range of the transmission power in each power transmission device of the auxiliary transmission components, and then the elastic range of each transmission power is used to perform master-slave parallel charging on the device to be charged; firstly, determining the transmissible power can identify that the power transmission device is in a low-load state and utilize the remaining capacity of the power transmission device to provide additional power support. When the main power transmission device is heavily loaded, the auxiliary transmission device will automatically supplement the load to ensure that the power transmission capacity of the charging device is maximized at all times. In this process, the power distribution between the selected 1200V-SiC-MOS main transmission device and the auxiliary transmission device can be dynamically adjusted according to real-time requirements and elastic characteristics, thereby avoiding the overload risk of a single device and optimizing the overall power transmission efficiency. The charging device can adjust the output power according to the load demand to achieve elastic power distribution, thereby improving the charging rate and reducing the energy loss during power transmission, and improving the overall charging efficiency; secondly, determining the auxiliary demand can clarify the specific power demand that the auxiliary transmission device should undertake during charging. When the main power transmission device is overloaded or heavily loaded, the auxiliary transmission device can provide the required supplementary power within its idle transmission capacity range. This power distribution mechanism effectively avoids the damage of the main power transmission device due to overload, and at the same time optimizes the resource utilization of the charging device to ensure that each power transmission device can operate in its optimal working state. By elastically paralleling to adjust the auxiliary demand, the charging device can not only flexibly respond to different battery load states, but also accelerate the charging process and improve the flexibility and efficiency of power distribution; in summary, based on the above solution, elastic distribution of the output power of the charging device during fast charging can be achieved.

[0056] Compared with Figure 1Corresponding to the fast charging method based on 1200V-SiC-MOS, the present disclosure also provides a fast charging system based on 1200V-SiC-MOS, as Figure 4 shown. The system may specifically include: A selection module 401, configured to select an idle 1200V-SiC-MOS in the charging device as the main power transmission device of the charging device during charging; A processing module 402, configured to obtain the elastic load characteristics of the main power transmission device during power transmission, and determine the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, so as to determine the transmissible power of each power transmission device in the auxiliary transmission components; The processing module 402 is further configured to determine the load demand of the charging device according to the battery state of the device to be charged, and determine the auxiliary demand of the power transmission load in the main power transmission device according to the load demand and the load characteristics of the main power transmission device; An execution module 403, configured to perform elastic parallel connection on the auxiliary demand based on each transmissible power to obtain an elastic interval of the transmission power in each power transmission device of the auxiliary transmission components, so as to perform master-slave parallel charging on the device to be charged based on the elastic interval of each transmission power.

[0057] In some embodiments, obtaining the elastic load characteristics of the main power transmission device during power transmission includes: Collecting the power transmission data of the main power transmission device; Extracting the effective transmission power and power transmission margin of the main power transmission device from the power transmission data; Determining the elastic load characteristics of the main power transmission device during power transmission based on the effective transmission power and the power transmission margin.

[0058] In some embodiments, determining the auxiliary transmission components of the charging device during charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device includes: Obtaining the idle power of each power transmission device in the charging device; Determining the idle transmission capacity of each power transmission device through the idle power and the elastic load characteristics of the charging power; Regarding the power transmission devices with idle transmission capacity lower than the preset auxiliary transmission threshold as auxiliary transmission devices, so as to use all the auxiliary transmission devices as the auxiliary transmission components of the charging device during charging.

[0059] In some embodiments, determining the transmissible power of each power transmission device in the auxiliary transmission components includes: For each power transmission device in the auxiliary transmission component, obtain the idle transmission capacity and overload safety factor of the power transmission device; Based on the idle transmission capacity and overload safety factor, determine the transmissible power in the power transmission device, so as to obtain the transmissible power in each power transmission device of the auxiliary transmission component.

[0060] In some embodiments, determining the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device includes: Obtain the current load information of the main transmission device; Extract the load characteristics of the main transmission device from the current load information; Determine the auxiliary demand of the power transmission load in the main transmission device through the load characteristics and the load demand.

[0061] In some embodiments, based on each transmissible power, perform elastic parallel connection on the auxiliary demand to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission component, including: Perform equal current distribution on the auxiliary demand to obtain the transmission power values of each power transmission device in the auxiliary transmission component; For each power transmission device in the auxiliary transmission component, obtain the transmissible power in the power transmission device; According to the transmissible power and the transmission power value of the power transmission device, determine the elastic interval of the transmission power in the power transmission device, so as to obtain the elastic interval of the transmission power in each power transmission device of the auxiliary transmission component.

[0062] In some embodiments, the power transmission device is a 1200V silicon carbide metal oxide semiconductor field effect transistor.

[0063] The above text details the examples of the fast charging method and system based on 1200V-SiC-MOS provided by the embodiments of the present application. It can be understood that, correspondingly, the device includes the corresponding hardware structure and / or software module for implementing the above functions. Those skilled in the art should easily realize that, combining the units and algorithm steps of each example described in the embodiments disclosed in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0064] In some embodiments, the present application further provides a computer device, which includes a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the computer device executes the above-mentioned fast charging method based on 1200V-SiC-MOS.

[0065] In some embodiments, referring to Figure 5 , the dashed line in this figure indicates that the unit or module is optional. This figure is a schematic structural diagram of a computer device for implementing the fast charging method based on 1200V-SiC-MOS according to an embodiment of the present application. The fast charging method based on 1200V-SiC-MOS described in the above embodiments can be implemented by Figure 5 the computer device shown. The computer device includes at least one processor 501, a memory 502, and at least one communication unit 505. The computer device can be a terminal device, a server, or a chip.

[0066] The processor 501 can be a general-purpose processor or a special-purpose processor. For example, the processor 501 can be a Central Processing Unit (CPU). The CPU can be used to control the computer device, execute software programs, and process the data of software programs. The computer device can also include a communication unit 505 for implementing signal input (reception) and output (transmission).

[0067] For example, the computer device can be a chip, and the communication unit 505 can be the input and / or output circuit of the chip. Alternatively, the communication unit 505 can be the communication interface of the chip. The chip can be a component of a terminal device, a network device, or other devices.

[0068] Again, for example, the computer device can be a terminal device or a server, and the communication unit 505 can be the transceiver of the terminal device or the server. Alternatively, the communication unit 505 can be the transceiver circuit of the terminal device or the server.

[0069] The computer device may include one or more memories 502, on which there is a program 504. The program 504 can be run by the processor 501 to generate instructions 503, so that the processor 501 executes the method described in the above method embodiments according to the instructions 503. Optionally, data (such as a target audit model) can also be stored in the memory 502. Optionally, the processor 501 can also read the data stored in the memory 502. The data can be stored at the same storage address as the program 504, or the data can be stored at a different storage address from the program 504.

[0070] The processor 501 and the memory 502 can be separately provided or integrated together. For example, they can be integrated on a system-on-chip (SOC) of a terminal device.

[0071] It should be understood that each step of the above method embodiments can be completed by a logic circuit in hardware form or an instruction in software form in the processor 501. The processor 501 can be a CPU, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices. For example, discrete gates, transistor logic devices, or discrete hardware components.

[0072] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code, where the above computer-usable storage media include, but are not limited to, disk memories, compact disc read-only memories (CD-ROMs), optical memories, etc.

[0073] For example, in some embodiments, the present application further provides a computer-readable storage medium storing instructions or code, which, when run on a computer, cause the computer to implement the above-mentioned fast charging method based on 1200V-SiC-MOS.

[0074] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0075] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A fast charging method based on 1200V-SiC-MOS, characterized in that: The method comprises: The idle 1200V-SiC-MOS in the charging device is selected as the main power transmission device of the charging device during charging; Obtaining elastic load characteristics of the main transmission device in power transmission, and determining the auxiliary transmission components of the charging device in charging from all power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, so as to determine the transmittable power of each power transmission device in the auxiliary transmission component; Determine the load demand of the charging device according to the battery status of the device to be charged, and determine the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device; The auxiliary demand quantities are flexibly connected in parallel based on each transmittable power to obtain an elastic range of transmission power in each power transmission device of the auxiliary transmission component, so as to perform master-slave parallel charging on the charging device based on the elastic range of each transmission power.

2. The method according to claim 1, characterized in that The obtaining of elastic load characteristics of the main transmission device during power transmission includes: Collect power transmission data of main transmission devices; Extracting effective transmission power and power transmission margin of the main transmission device from the power transmission data; An elastic load characteristic of a main transmission component in power transmission is determined based on the effective transmission power and the power transmission margin.

3. The method according to claim 1, characterized in that The method of determining the auxiliary transmission component of the charging device during charging from all power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device includes: Obtaining the idle power of each power transmission device in the charging device; Determining the idle transmission capacity of each power transmission device according to the elastic load characteristics of each idle power and the charging power; The power transmission devices whose idle transmission capacity is lower than the preset auxiliary transmission threshold are used as auxiliary transmission devices, so as to use all the auxiliary transmission devices as auxiliary transmission components of the charging device during charging.

4. The method according to claim 1, characterized in that: The determining the transmittable power of each power transmission device in the auxiliary transmission component comprises: For each power transmission device in the auxiliary transmission component, obtaining the idle transmission capacity and overload safety factor of the power transmission device; The transmittable power in the power transmission device is determined based on the idle transmission capacity and the overload safety factor to obtain the transmittable power in each power transmission device of the auxiliary transmission component.

5. The method according to claim 1, characterized in that The determining the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device includes: Obtain current load information of the main transmission device; Extracting the load characteristics of the main transmission device from the current load information; The auxiliary demand of the power transmission load in the main transmission device is determined according to the load characteristics and the load demand.

6. The method according to claim 1, characterized in that The step of elastically connecting the auxiliary demand quantities in parallel based on the respective transmittable powers to obtain the elastic range of the transmission power in the respective power transmission devices of the auxiliary transmission component includes: Performing current equalization distribution on the auxiliary demand to obtain the transmission power value of each power transmission device in the auxiliary transmission component; For each power transmission device in the auxiliary transmission component, obtaining the transmittable power in the power transmission device; The elastic range of the transmission power in the power transmission device is determined according to the transmittable power and the transmission power value of the power transmission device, so as to obtain the elastic range of the transmission power in each power transmission device of the auxiliary transmission component.

7. The method according to claim 1, characterized in that The power transmission device is a 1200V silicon carbide metal oxide semiconductor field effect transistor.

8. A fast charging system based on 1200V-SiC-MOS, characterized in that: The system comprises: A selection module is used to select an idle 1200V-SiC-MOS in the charging device as the main power transmission device of the charging device during charging; a processing module, configured to obtain elastic load characteristics of the main transmission device in power transmission, determine the auxiliary transmission components of the charging device in charging from all the power transmission devices in the charging device based on the elastic load characteristics of the charging power and the idle power of each power transmission device in the charging device, so as to determine the transmittable power of each power transmission device in the auxiliary transmission component; The processing module is further used to determine the load demand of the charging device according to the battery status of the device to be charged, and determine the auxiliary demand of the power transmission load in the main transmission device according to the load demand and the load characteristics of the main transmission device; The execution module is used to flexibly parallel the auxiliary demand based on each transmittable power, obtain the elastic range of the transmission power in each power transmission device of the auxiliary transmission component, and perform master-slave parallel charging on the charging device based on the elastic range of each transmission power.

9. An electronic device, characterized in that: include: at least one processor; and a memory communicatively coupled to the at least one processor; The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-7.

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