WO2021007682A1 - Procédé de protection d'alimentation électrique, et système avec fonction de protection d'alimentation électrique - Google Patents

Procédé de protection d'alimentation électrique, et système avec fonction de protection d'alimentation électrique Download PDF

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Publication number
WO2021007682A1
WO2021007682A1 PCT/CN2019/095665 CN2019095665W WO2021007682A1 WO 2021007682 A1 WO2021007682 A1 WO 2021007682A1 CN 2019095665 W CN2019095665 W CN 2019095665W WO 2021007682 A1 WO2021007682 A1 WO 2021007682A1
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Prior art keywords
power supply
side device
load
control signal
temperature
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PCT/CN2019/095665
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English (en)
Chinese (zh)
Inventor
周勇辉
刘宇
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980097059.8A priority Critical patent/CN113906648A/zh
Priority to PCT/CN2019/095665 priority patent/WO2021007682A1/fr
Publication of WO2021007682A1 publication Critical patent/WO2021007682A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network

Definitions

  • One or more embodiments of the present application generally relate to the field of power supply protection of electronic equipment, and specifically relate to a power supply protection method and a system with a power supply protection function.
  • PMU power management unit
  • PMIC power management integrated circuit
  • PMU power management unit
  • PMIC power management integrated circuit
  • PMU generally uses protection circuits such as under/overvoltage, overcurrent, and overtemperature to handle abnormal power supply to protect electronic equipment.
  • the protection circuit generally causes the PMU to stop providing power, causing the electronic device to restart or shut down.
  • Some existing technologies deal with high current scenarios of electronic devices by judging the temperature of the battery.
  • the prior art judges whether the electronic device is working under a high current state by detecting the temperature. The real-time performance is not high enough, and the response speed to the abnormal power supply is slow. In some cases, the processing of the abnormal power supply may not be timely, resulting in the protection circuit of the PMU. Intervene to restart or shut down the system.
  • the prior art judges power supply abnormality by detecting the battery temperature. Since only one-dimensional information is used to determine the power supply abnormality, it is easy to form an overdesign of the power supply protection scheme, resulting in overprotection. For example, in a low temperature scenario, the battery voltage drops due to the high internal resistance of the battery.
  • the abnormal power supply is judged only from the temperature dimension, it is likely to be judged as an abnormal undervoltage, but when the battery is fully charged, the undervoltage may not occur. If the power supply protection is performed according to the judgment of the under-voltage abnormality, it will cause over-protection.
  • Some embodiments of the present application provide a power supply protection method and a system with power supply protection function.
  • the following describes the application from multiple aspects, and the implementation and beneficial effects of the following multiple aspects can be referred to each other.
  • the embodiments of the present application provide a system with power supply protection function.
  • the system includes a transceiving unit and a detection unit.
  • the transceiving unit is used to receive measurement information on various parameters of the electronic device under working conditions.
  • the measurement information is obtained from the sensor located in at least one of the power supply side device and the load side device of the electronic equipment through the transceiver unit.
  • Various parameters include: current, voltage, power consumption, frequency, and temperature.
  • the measurement information includes multiple Measurement results of at least two of these parameters.
  • the detection unit is configured to compare the measurement information received by the transceiving unit with corresponding thresholds, and detect whether the electronic device is abnormal according to the comparison result, and when the electronic device is detected to be abnormal In this case, corresponding power supply abnormality information is generated to indicate that the electronic device has a power supply abnormality related to at least one of the at least two parameters.
  • the implementation of the present application by detecting various power supply related parameters of the electronic equipment system in the working state, it is possible to comprehensively and accurately determine the power supply abnormality of the system, to provide power supply protection more accurately, and to avoid using only single dimension
  • the information judges that the power supply is abnormal and avoids the formation of over-design of the power supply protection scheme, resulting in over-protection.
  • the power supply abnormality information may include information indicating that the undervoltage phenomenon occurs in the power supply side device of the electronic device.
  • the power supply abnormality information may further include an indication that the current is too high in the power supply side device of the electronic device, the power consumption of the power supply side device is too large, or the current flow of the power supply side device is too large. Information about the phenomenon of excessive power consumption.
  • the power supply abnormality information may further include information indicating that at least one of the power supply side device and the load side device of the electronic device has the phenomenon of excessively high or low temperature.
  • system further includes a processing unit, which sends corresponding control signals to control the electronic device to adjust at least one of the multiple parameters according to the various power supply abnormal information described above.
  • the at least one parameter to be adjusted includes the frequency and the voltage.
  • the processing unit may further indicate that the voltage is too low on the power supply side device of the electronic device according to the power supply abnormality information, and send a reduction in the frequency of the load side device of the electronic device, and then The control signal for reducing the output voltage of the power supply side device.
  • the processing unit may further indicate, according to the power supply abnormality information, that the power supply side device of the electronic device has the excessive current, the power consumption of the power supply side device is too large, or the power supply side device The phenomenon that the current is too large and the power consumption is too large, sends out the control signal that reduces the frequency of the load-side device of the electronic equipment, and then reduces the output voltage of the power supply-side device.
  • the processing unit may further indicate that at least one of the power supply-side device and the load-side device of the electronic equipment has the phenomenon that the temperature is too low according to the power supply abnormality information, and issue an increase in the power supply side device.
  • the processing unit may further indicate, according to the power supply abnormality information, that at least one of the power supply side device and the load side device of the electronic equipment has the over-temperature phenomenon, and send out a reduction in the load side device.
  • the frequency then reduces at least one of the control signal to lower the output voltage of the power supply side device, and the control signal to lower the temperature of the load side device.
  • the processing unit may further indicate that the voltage is too low in the power supply side device of the electronic equipment according to the power supply abnormality information, and determine that the voltage of the power supply side device and the power supply side device Whether the difference between the shutdown voltage thresholds is greater than a predetermined value; if the difference is greater than the predetermined value, the control signal is sent to the processor of the load-side device of the electronic device to cause the processor to interrupt In order to execute instructions to reduce the frequency of the load-side device and reduce the output voltage of the power-supply-side device; if the difference is less than the predetermined value, the load-side device clock reset generator (CRG ) Send the control signal to lower the frequency, and send the control signal to lower the output voltage to the power management unit (PMU) of the power supply side device.
  • CCG load-side device clock reset generator
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • the processing unit may further indicate, according to the power supply abnormality information, that the power supply side device of the electronic device has the excessive current, the power consumption of the power supply side device is too large, or the power supply side device If the current is too large and the power consumption is too large, it is determined that at least one of the operating current and the power consumption of the power supply side device of the electronic equipment is related to the shutdown current threshold and shutdown power consumption of the power supply side device Whether the difference of at least one of the thresholds is greater than a predetermined value; if the difference is greater than the predetermined value, the control signal is sent to the processor of the load-side device to cause the processor to interrupt to perform the reduction The frequency of the load-side device and an instruction to reduce the output voltage of the power-supply-side device; if the difference is less than the predetermined value, the CRG of the load-side device is issued the instruction to reduce the frequency A control signal and the control signal for reducing the output voltage to the PMU of the power supply side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the processing unit may further determine that the temperature is too low in at least one of the power supply side device and the load side device of the electronic equipment according to the power supply abnormality information, and determine that the power supply side device and the load Whether the difference between the temperature of at least one of the side devices and the shutdown temperature of the electronic device is greater than a predetermined value; if the difference is greater than the predetermined value, send the said temperature to the processor of the load side device A control signal to interrupt the processor to execute at least one of an instruction to increase the output voltage of the power supply side device, reduce the frequency of the load side device, and increase the temperature of the load side device; If the difference is less than a predetermined value, send the control signal to increase the output voltage to the PMU of the power supply side device, and send the control signal to lower the frequency to the CRG of the load side device, and At least one of the control signals for increasing the temperature is sent to a temperature regulator of the load-side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the processing unit may further determine that the temperature is too high in at least one of the power supply side device and the load side device of the electronic equipment according to the power supply abnormal information Whether the difference between the temperature of at least one of the side devices and the shutdown temperature of the electronic device is greater than a predetermined value; if the difference is greater than the predetermined value, send the said temperature to the processor of the load side device Control signals to interrupt the processor to execute at least one of instructions to reduce the frequency of the load-side device, reduce the output voltage of the power supply-side device, and reduce the temperature of the load-side device If the difference is less than the predetermined value, send the control signal to reduce the frequency to the CRG of the load-side device of the electronic device, and send the PMU of the power supply side device to reduce the output At least one of the control signal for voltage and the control signal for lowering the temperature to a temperature regulator of the load side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the priority is determined according to the probability of the power supply abnormality, the degree of influence on the system, and the speed of occurrence
  • the power supply abnormality information is specifically processed according to the following priority: the priority related to at least one of the excessive current and the excessive power consumption is higher than the priority related to the undervoltage;
  • the priority related to the excessively low voltage is higher than the priority related to the excessively high temperature; and the priority related to the excessively high temperature is higher than the priority related to the excessively low temperature The priority.
  • the system further includes an encoding unit and a decoding unit.
  • the encoding unit encodes the power supply abnormal information to generate the encoded power supply abnormal information, and then the encoded power supply abnormal information
  • the decoding unit decodes to obtain power supply abnormal information.
  • the bandwidth of information transmission inside the electronic device is limited. By encoding the abnormal power supply information, the information capacity can be reduced, the bandwidth occupation during information transmission can be reduced, and the information transmission efficiency can be improved.
  • the system includes the PMU, SOC, or main board of the electronic device.
  • the present application provides a system with power supply protection function.
  • the system includes a processing unit and a transceiver unit.
  • the processing unit is used to send control signals to control electronic equipment to adjust various parameters based on abnormal power supply information.
  • the power supply abnormality information is obtained by comparing the received measurement information with corresponding threshold values, and the measurement information includes at least two of the multiple parameters of the electronic device in the working state.
  • the measurement results of various parameters are obtained from the sensor located in at least one of the power supply side device and the load side device of the electronic equipment through the transceiver unit, and the multiple parameters include: current, voltage, power consumption, frequency, and temperature .
  • the transceiver unit sends the control signal to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately, and the power supply protection can be avoided.
  • Dimensional information judges power supply abnormalities and avoids over-design of power supply protection schemes, resulting in over-protection.
  • the power supply abnormality information may include information indicating that the undervoltage phenomenon occurs in the power supply side device of the electronic device.
  • the power supply abnormality information may further include an indication that the current is too high in the power supply side device of the electronic device, the power consumption of the power supply side device is too large, or the current flow of the power supply side device is too large. Information about the phenomenon of excessive power consumption.
  • the power supply abnormality information may further include information indicating that at least one of the power supply side device and the load side device of the electronic device has the phenomenon of excessively high or low temperature.
  • the system further includes a detection unit, which compares the received measurement information with corresponding thresholds, detects whether the electronic device is abnormal, and detects that the electronic device is abnormal.
  • the power supply abnormality information is generated to indicate that the electronic device has a power supply abnormality related to at least one of the two parameters.
  • the at least one parameter to be adjusted includes the frequency and the voltage.
  • the processing unit may further indicate that the voltage is too low on the power supply side device of the electronic device according to the power supply abnormality information, and send a reduction in the frequency of the load side device of the electronic device, and then The control signal for reducing the output voltage of the power supply side device.
  • the processing unit may further indicate that the voltage is too low in the power supply side device of the electronic equipment according to the power supply abnormality information, and determine that the voltage of the power supply side device and the power supply side device Whether the difference between the shutdown voltage thresholds is greater than a predetermined value; if the difference is greater than the predetermined value, the control signal is sent to the processor of the load-side device of the electronic device to cause the processor to interrupt In order to execute instructions to reduce the frequency of the load-side device and reduce the output voltage of the power-supply-side device; if the difference is less than the predetermined value, the load-side device clock reset generator (CRG ) Send the control signal to lower the frequency, and send the control signal to lower the output voltage to the power management unit (PMU) of the power supply side device.
  • CCG load-side device clock reset generator
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the processing unit may further indicate, according to the power supply abnormality information, that the power supply side device of the electronic device has the excessive current, the power consumption of the power supply side device is too large, or the power supply side device The phenomenon that the current is too large and the power consumption is too large, sends out the control signal that reduces the frequency of the load-side device of the electronic equipment, and then reduces the output voltage of the power supply-side device.
  • the processing unit may further indicate, according to the power supply abnormality information, that the power supply side device of the electronic device has the excessive current, the power consumption of the power supply side device is too large, or the power supply side device If the current is too large and the power consumption is too large, it is determined that at least one of the operating current and the power consumption of the power supply side device of the electronic equipment is related to the shutdown current threshold and shutdown power consumption of the power supply side device Whether the difference of at least one of the thresholds is greater than a predetermined value; if the difference is greater than the predetermined value, the control signal is sent to the processor of the load-side device to cause the processor to interrupt to perform the reduction The frequency of the load-side device and an instruction to reduce the output voltage of the power-supply-side device; if the difference is less than the predetermined value, the CRG of the load-side device is issued the instruction to reduce the frequency A control signal and the control signal for reducing the output voltage to the PMU of the power supply side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • the processing unit may further indicate that at least one of the power supply-side device and the load-side device of the electronic equipment has the phenomenon that the temperature is too low according to the power supply abnormality information, and issue an increase in the power supply side device.
  • the processing unit may further determine that the temperature is too low in at least one of the power supply side device and the load side device of the electronic equipment according to the power supply abnormality information, and determine that the power supply side device and the load Whether the difference between the temperature of at least one of the side devices and the shutdown temperature of the electronic device is greater than a predetermined value; if the difference is greater than the predetermined value, send the said temperature to the processor of the load side device A control signal to interrupt the processor to execute at least one of an instruction to increase the output voltage of the power supply side device, reduce the frequency of the load side device, and increase the temperature of the load side device; If the difference is less than a predetermined value, send the control signal to increase the output voltage to the PMU of the power supply side device, and send the control signal to lower the frequency to the CRG of the load side device, and At least one of the control signals for increasing the temperature is sent to a temperature regulator of the load-side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the processing unit may further indicate, according to the power supply abnormality information, that at least one of the power supply side device and the load side device of the electronic equipment has the over-temperature phenomenon, and send out a reduction in the load side device.
  • the frequency then reduces at least one of the control signal to lower the output voltage of the power supply side device, and the control signal to lower the temperature of the load side device.
  • the processing unit may further determine that the temperature is too high in at least one of the power supply side device and the load side device of the electronic equipment according to the power supply abnormal information Whether the difference between the temperature of at least one of the side devices and the shutdown temperature of the electronic device is greater than a predetermined value; if the difference is greater than the predetermined value, send the said temperature to the processor of the load side device Control signals to interrupt the processor to execute at least one of instructions to reduce the frequency of the load-side device, reduce the output voltage of the power supply-side device, and reduce the temperature of the load-side device If the difference is less than the predetermined value, send the control signal to reduce the frequency to the CRG of the load-side device of the electronic device, and send the PMU of the power supply side device to reduce the output At least one of the control signal for voltage and the control signal for lowering the temperature to a temperature regulator of the load side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • the priority is determined according to the probability of the power supply abnormality, the degree of influence on the system, and the speed of occurrence
  • the power supply abnormality information is specifically processed according to the following priority: the priority related to at least one of the excessive current and the excessive power consumption is higher than the priority related to the undervoltage;
  • the priority related to the excessively low voltage is higher than the priority related to the excessively high temperature; and the priority related to the excessively high temperature is higher than the priority related to the excessively low temperature The priority.
  • the system further includes an encoding unit and a decoding unit.
  • the encoding unit encodes the power supply abnormal information to generate the encoded power supply abnormal information, and then the encoded power supply abnormal information
  • the decoding unit decodes to obtain power supply abnormal information.
  • the bandwidth of information transmission inside the electronic device is limited. By encoding the abnormal power supply information, the information capacity can be reduced, the bandwidth occupation during information transmission can be reduced, and the information transmission efficiency can be improved.
  • the system includes the PMU, SOC, or main board of the electronic device.
  • the present application provides a power supply protection method.
  • the method includes generating and reducing the frequency of the load-side device of the electronic device based on abnormal information indicating that the power supply-side device of the electronic device is in a working state. Then reduce the control signal of the output voltage of the power supply side device.
  • the electronic equipment can include common consumer electronic products, industrial control products and electronic equipment inside the vehicle.
  • the power supply side device usually includes the power supply and PMU of the electronic equipment.
  • the power source is mainly a battery
  • the load-side device usually includes a system on a chip and various interfaces, such as a display panel interface, an audio interface, an imaging module interface, and a network communication interface.
  • the control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device, where the parameter adjuster can adjust the voltage, current, frequency, power consumption, and temperature of the electronic device.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately, and the power supply protection can be avoided.
  • Dimensional information judges power supply abnormalities and avoids over-design of power supply protection schemes, resulting in over-protection.
  • the power supply abnormality information that the voltage is too low may also indicate that the environmental temperature when the electronic device is working is too low, for example, the temperature of at least one of the power supply side device and the load side device is too low in a cold environment.
  • the power supply abnormality information is determined by various parameters when the electronic device is working. Specifically, receiving measurement information for at least two of the multiple parameters of the electronic device in the working state, and the measurement information is transmitted from at least one of the power supply side device and the load side device of the electronic device through the transceiver unit. The sensor is obtained, where the various parameters include: current, voltage, power consumption, frequency and temperature.
  • the received measurement information is compared with corresponding thresholds respectively to detect whether the electronic device has an abnormality, and in the case where the electronic device is detected to be abnormal, the power supply abnormality is generated Information to indicate that the electronic device has a power supply abnormality related to at least one of the two parameters.
  • the abnormal power supply information may be encoded after the abnormal power supply information is generated to generate the encoded abnormal power supply information, and then the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the bandwidth of information transmission inside the electronic device is limited. By encoding the abnormal power supply information, the information capacity can be reduced, the bandwidth occupation during information transmission can be reduced, and the information transmission efficiency can be improved.
  • the generating a control signal that reduces the frequency of the load-side device of the electronic device, and then reduces the output voltage of the power supply side device further includes: judging the voltage of the power supply side device and the Whether the difference between the shutdown voltage threshold of the power supply side device is greater than a predetermined value, by judging the margin between the voltage and the shutdown voltage threshold, different processing thresholds are set, and diversified power supply abnormal processing methods are provided according to the thresholds.
  • the control signal is sent to the processor of the load-side device of the electronic device, so that the processor is interrupted in order to perform the load-side reduction.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the embodiments of the present application provide a power supply protection method, which includes when the power supply side device of the electronic equipment is in the working state, the working current is too large, the power consumption is too large, or the working current is too large and the
  • a control signal is generated to reduce the frequency of the load-side device of the electronic equipment, and then reduce the output voltage of the power supply-side device.
  • the occurrence of the above-mentioned power supply abnormality is related to the operation of heavy load applications on the load side device, for example, high-rendering network games, high-definition streaming media playback, etc.
  • the control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately, and the power supply protection can be avoided.
  • Dimensional information judges power supply abnormalities and avoids over-design of power supply protection schemes, resulting in over-protection.
  • the power supply abnormality information is determined by various parameters when the electronic device is working. Specifically, receiving measurement information for at least two of the multiple parameters of the electronic device in the working state, and the measurement information is transmitted from at least one of the power supply side device and the load side device of the electronic device through the transceiver unit. The sensor is obtained, where the various parameters include: current, voltage, power consumption, frequency and temperature.
  • the received measurement information is compared with corresponding thresholds respectively to detect whether the electronic device has an abnormality, and in the case where the electronic device is detected to be abnormal, the power supply abnormality is generated Information to indicate that the electronic device has a power supply abnormality related to at least one of the two parameters.
  • the abnormal power supply information may be encoded after the abnormal power supply information is generated to generate the encoded abnormal power supply information, and then the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the bandwidth of information transmission inside the electronic device is limited. By encoding the abnormal power supply information, the information capacity can be reduced, the bandwidth occupation during information transmission can be reduced, and the information transmission efficiency can be improved.
  • the generating a control signal that reduces the frequency of the load-side device of the electronic equipment, and then reduces the output voltage of the power supply-side device further includes: determining all of the power supply-side device of the electronic equipment Whether the difference between at least one of the operating current and the power consumption and at least one of the shutdown current threshold and the shutdown power consumption threshold of the power supply side device is greater than a predetermined value, by determining at least one of the operating current and the power consumption Set different processing thresholds for the margin between the shutdown threshold and the shutdown threshold, and provide diversified power supply exception processing methods according to the thresholds.
  • the control signal is sent to the processor of the load-side device to cause the processor to interrupt in order to perform the frequency reduction of the load-side device and An instruction to reduce the output voltage of the power supply side device; if the difference is less than the predetermined value, the control signal for reducing the frequency is sent to the CRG of the load side device and the control signal is sent to the power supply side
  • the PMU of the device sends out the control signal to lower the output voltage.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the embodiments of the present application provide a power supply protection method, the method includes, when at least one of the power supply side device and the load side device of the electronic equipment in the working state has an abnormally low temperature power supply, You can increase the system load, change the operating frequency, increase the operating voltage, increase the system power consumption, or trigger the system to physically heat up. Specifically, a control signal for increasing the output voltage of the power supply side device is generated, a control signal for reducing the frequency of the load side device is generated, the output voltage of the power supply side device is increased, and the output voltage of the load side device is reduced. At least one of a frequency control signal and a control signal to increase the temperature of the load side device. Then, the control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately, and the power supply protection can be avoided.
  • Dimensional information judges power supply abnormalities and avoids over-design of power supply protection schemes, resulting in over-protection.
  • the power supply abnormality information is determined by various parameters when the electronic device is working. Specifically, receiving measurement information for at least two of the multiple parameters of the electronic device in the working state, and the measurement information is transmitted from at least one of the power supply side device and the load side device of the electronic device through the transceiver unit. The sensor is obtained, where the various parameters include: current, voltage, power consumption, frequency and temperature.
  • the received measurement information is compared with corresponding thresholds respectively to detect whether the electronic device has an abnormality, and in the case where the electronic device is detected to be abnormal, the power supply abnormality is generated Information to indicate that the electronic device has a power supply abnormality related to at least one of the two parameters.
  • the abnormal power supply information may be encoded after the abnormal power supply information is generated to generate the encoded abnormal power supply information, and then the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the bandwidth of information transmission inside the electronic device is limited. By encoding the abnormal power supply information, the information capacity can be reduced, the bandwidth occupation during information transmission can be reduced, and the information transmission efficiency can be improved.
  • the generating a control signal for increasing the output voltage of the power supply side device, the control signal for reducing the frequency of the load side device, increasing the output voltage of the power supply side device and At least one of the control signal for reducing the frequency of the load-side device and the control signal for increasing the temperature of the load-side device further includes: judging the power supply-side device and the load Whether the difference between the temperature of at least one of the side devices and the shutdown temperature of the electronic device is greater than a predetermined value is determined by determining the margin between the temperature of at least one of the power supply side device and the load side device and the shutdown threshold , Set different processing thresholds, and provide diversified power supply exception processing methods according to the thresholds.
  • the control signal is sent to the processor of the load-side device to cause the processor to interrupt in order to perform increasing the output voltage of the power supply-side device
  • At least one of the instruction to reduce the frequency of the load-side device and the instruction to increase the temperature of the load-side device if the difference is less than a predetermined value, send to the The PMU of the power supply side device sends out the control signal to increase the output voltage, sends out the control signal to reduce the frequency to the CRG of the load side device, and sends out the increase rate to the temperature regulator of the load side device.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the present application provides a power supply protection method.
  • the method includes that when at least one of the power supply side device and the load side device of the electronic equipment in the working state has a power supply abnormality that is too high, the system can be reduced Load, reduce the operating frequency, reduce the operating voltage, limit the system power consumption, and also trigger the system to physically cool down. Specifically, generating at least one of the control signal that lowers the frequency of the load-side device and then the output voltage of the power supply-side device, and the control signal that lowers the temperature of the load-side device; then The control signal is sent to the parameter regulator in the power supply side device and/or the load side device.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately, and the power supply protection can be avoided.
  • Dimensional information judges power supply abnormalities and avoids over-design of power supply protection schemes, resulting in over-protection.
  • the power supply abnormality information is determined by various parameters when the electronic device is working. Specifically, receiving measurement information for at least two of the multiple parameters of the electronic device in the working state, and the measurement information is transmitted from at least one of the power supply side device and the load side device of the electronic device through the transceiver unit. The sensor is obtained, where the various parameters include: current, voltage, power consumption, frequency and temperature.
  • the received measurement information is compared with corresponding thresholds respectively to detect whether the electronic device has an abnormality, and in the case where the electronic device is detected to be abnormal, the power supply abnormality is generated Information to indicate that the electronic device has a power supply abnormality related to at least one of the two parameters.
  • the abnormal power supply information may be encoded after the abnormal power supply information is generated to generate the encoded abnormal power supply information, and then the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the encoded abnormal power supply information is transmitted to other modules of the electronic device for decoding.
  • the bandwidth of information transmission inside the electronic device is limited. By encoding the abnormal power supply information, the information capacity can be reduced, the bandwidth occupation during information transmission can be reduced, and the information transmission efficiency can be improved.
  • At least one of generating a control signal that reduces the frequency of the load-side device and then reduces the output voltage of the power supply-side device, and the control signal that reduces the temperature of the load-side device It further includes: determining whether the difference between the temperature of at least one of the power supply side device and the load side device and the shutdown temperature of the electronic equipment is greater than a predetermined value, by determining at least one of the power supply side device and the load side device Set different processing thresholds for the margin between the temperature and the shutdown threshold, and provide diversified power supply exception processing methods according to the thresholds.
  • the control signal is sent to the processor of the load-side device to cause the processor to interrupt in order to perform the frequency reduction of the load-side device and At least one of an instruction to reduce the output voltage of the power supply-side device and the instruction to reduce the temperature of the load-side device; if the difference is less than a predetermined value, send the instruction to the electronic device
  • the CRG of the load-side device sends out the control signal to reduce the frequency, sends the control signal to reduce the output voltage to the PMU of the power supply-side device, and sends out to the temperature regulator of the load-side device At least one of the control signals to lower the temperature.
  • control signals to the processor to handle power supply abnormalities By transmitting control signals to the processor to handle power supply abnormalities, the operating frequency and output voltage can be adjusted more flexibly and carefully, making the processing of power supply abnormalities more precise and flexible.
  • direct CRG frequency reduction can achieve nanosecond response speed
  • the power management unit can achieve microsecond response speed.
  • the present application provides a computer-readable storage medium, which may be non-volatile.
  • the storage medium contains instructions that, after being executed, implement the method described in any one of the foregoing aspects or implementation manners.
  • the present application provides a power supply protection device, which includes a memory and a processor, where the memory is used to store instructions executed by one or more processors of the power supply protection device; the processor is used to execute instructions in the memory After the instruction is executed, it implements the method described in any one of the foregoing aspects or implementations.
  • this application provides an electronic device, such as a mobile terminal.
  • the electronic equipment includes a power supply-side device, a load-side device, and the system with a power supply protection function as described in any one of the foregoing aspects or embodiments.
  • the system may be provided in a power supply side device.
  • the system may be provided in a load-side device.
  • the system may be provided in the power supply side device and the load side device.
  • the power supply side device includes a battery and a PMU.
  • the load-side device includes an SoC and a motherboard.
  • the effects of this application include, but are not limited to:
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, high current and other scenarios.
  • the system of electronic equipment keeps running without shutting down.
  • FIGS. 1a-1d show schematic diagrams of modules of a computing system with a power supply protection device according to an exemplary embodiment of the present application.
  • FIGS. 2a-2d show schematic diagrams of modules of a power supply protection device according to exemplary embodiments of the present application.
  • Fig. 3 shows a schematic flowchart of a power supply protection method according to an embodiment of the present application.
  • Fig. 4 shows a schematic flowchart of a power supply protection method according to another embodiment of the present application.
  • Fig. 5 shows a schematic flowchart of a power supply protection method according to another embodiment of the present application.
  • Fig. 6 shows a schematic flowchart of a power supply protection method according to another embodiment of the present application.
  • Fig. 7 shows a schematic diagram of modules of a power supply protection device according to an embodiment of the present application.
  • module or unit may refer to or include an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated or group) that executes one or more software or firmware programs, and/or Memory (shared, dedicated or group), combinational logic circuit, and/or other suitable components that provide the described functions, or may be an application specific integrated circuit (ASIC), electronic circuit, executing one or more software or firmware Part of the program's processor (shared, dedicated or group) and/or memory (shared, dedicated or group), combinational logic circuit, and/or other suitable components that provide the described functions.
  • ASIC application specific integrated circuit
  • ASIC application specific integrated circuit
  • processor shared, dedicated or group
  • Memory shared, dedicated or group
  • combinational logic circuit and/or other suitable components that provide the described functions
  • ASIC application specific integrated circuit
  • System 1 includes, but is not limited to, laptop devices, desktop computers, handheld PCs, personal digital assistants, engineering workstations, servers, network devices, network hubs, switches, embedded processors, and digital signal processors (Digital Signal Processors).
  • DSP digital signal processor
  • graphics equipment for example, graphics equipment, video game equipment, set-top boxes, microcontrollers, cellular phones, portable media players, handheld devices, wearable devices (for example, display glasses or goggles, head-mounted displays (Head-Mounted Display) , HMD for short), watches, headsets, armbands, jewelry, etc.), virtual reality (Virtual Reality, VR) and/or augmented reality (Augment Reality, AR) devices, Internet of Things (IoT) Equipment, industrial control equipment, in-vehicle infotainment equipment, streaming media client equipment, e-book reading equipment, POS machines, control systems for electric vehicles, and various other electronic equipment.
  • IoT Internet of Things
  • IoT Internet of Things
  • industrial control equipment in-vehicle infotainment equipment
  • streaming media client equipment e-book reading equipment
  • POS machines control systems for electric vehicles
  • control systems for electric vehicles and various other electronic equipment.
  • the computing system 1 may include a power management unit (PMU) 12 and a system on chip (System on Chip, SoC) 14.
  • the system on chip 14 may include one or more (only shown in the figure).
  • the processor 142 may include, but is not limited to, a central processing unit (CPU), a graphics processor GPU (Graphics Processing Unit), a digital signal processor DSP, and a microprocessor MCU (Micro-programmed Control Unit). ), AI (Artificial Intelligence) processor or programmable logic device FPGA (Field Programmable Gate Array) and other processing modules or processing circuits, and clock reset generator (Clock Reset Generator, CRG) 144.
  • CPU central processing unit
  • GPU Graphics Processing Unit
  • DSP digital signal processor
  • MCU Micro-programmed Control Unit
  • AI Artificial Intelligence
  • FPGA Field Programmable Gate Array
  • CRG clock reset generator
  • the system 1 may further include a power supply protection device 10, where the power supply protection device 10 includes an abnormality detection unit 1022, an abnormality processing unit 1042, and a transceiver unit 106.
  • the power supply protection device 10 includes an abnormality detection unit 1022, an abnormality processing unit 1042, and a transceiver unit 106.
  • the power supply protection device 10 can be independently arranged in the system 1.
  • the power supply protection device 10 can also be arranged in the power supply. In the management unit 12 or the system on chip 14.
  • the power supply protection device 10 may be implemented in the system 1 in a variety of different ways.
  • the power supply protection device 10 may include an abnormality detection device 102 and an abnormality processing device 104.
  • the abnormality detection device 102 includes an abnormality detection unit 1022 and a transceiving unit 106a.
  • the abnormality detection device 102 may optionally include an abnormality encoding unit 1024.
  • the exception handling device 104 includes an exception handling unit 1042 and a transceiving unit 106b.
  • the exception handling device 104 may optionally include an exception decoding unit 1044.
  • the exemplary system 1 includes one or more abnormality detection devices 102, 102a-102c, and one or more transceiver units 106, 106a-106b.
  • the letter after the reference number, such as "102a” indicates a reference to an element with that specific reference number.
  • a reference number without subsequent letters in the text, such as "102” represents a general reference to the implementation of the element with the reference number. As shown in FIGS.
  • the abnormality detection device 102 may exist in the power management unit 12 (for example, 102a), or exist in the system-on-chip 14 (for example, 102c), or exist in other locations of the system 1, such as a motherboard. (For example, 102b). In different embodiments, the anomaly detection device 102 may also exist in the power management unit 12 and the system on chip 14 at the same time (for example, 102a and 102c), or exist in the power management unit 12, the motherboard and the system on chip 14 at the same time (for example, , 102a-102c).
  • the exception handling device 104 may exist in the power management unit 12 of the system 1, or the system on chip 14, or the motherboard.
  • the abnormality detection device 102 and the abnormality processing device 104 coexist in the same device, for example, as shown in FIG. 1b, the abnormality detection device 102 and the abnormality processing device 104 coexist.
  • the abnormality detection device 102 and the abnormality processing device 104 may exist in the power management unit 12 as integrated devices such as the power supply protection device 10, or may exist in the power management unit 12 as independent devices.
  • the system 1 may not include one or more components shown in FIGS. 1a-1d, or may include other components not shown in FIGS. 1a-1d.
  • the power supply protection device 10 abnormal detection device 102, abnormal processing device 104
  • power management unit 12 and system on chip 14 are coupled to each other, and the power management unit 12 provides stable power so that the various components of the system 1 normal work.
  • the system on chip 14 may be responsible for processing various operations of the system 1, including shutdown operations.
  • the system-on-chip 14 may also include at least one memory. The memory is used to store applications temporarily loaded by the system-on-chip and data generated by the application running by the processor 142.
  • the processor 142 may run the operating system of the system 1, for example, Android, iOS, Windows OS, Hongmeng operating system, etc.
  • the clock reset generator (CRG) 144 can receive instructions from the processor to set and reset the clocks of the system and the core.
  • the power management unit 12 may be an integrated composite power management unit, which may have modules/circuits such as temperature protection, overcurrent and overvoltage protection, etc., and the power management unit 12 may be implemented by CMOS technology.
  • the power supply protection device 10 (the abnormality detection device 102 and the abnormality processing device 104) may be codes and routines operable by a processor, so that the abnormality of the power supply of the system 1 can be detected and processed.
  • hardware including a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC) may be used to implement the power supply protection device 10 (the abnormality detection device 102 and the abnormality processing device 104).
  • a combination of hardware and software may be used to implement the power supply protection device 10 (the abnormality detection device 102 and the abnormality processing device 104).
  • the abnormality detection unit 1022 can detect a variety of information when the system 1 is working.
  • the working state of the system 1 may include a standby state and a normal working state.
  • the working state also includes a low power consumption state (for example, a power saving mode, etc.), but does not include a complete power-off state. State, where in the working state, each device of the system 1 can realize part of the function or the complete function.
  • the detected information in the working state of the system may include information about the current, voltage, power consumption, load, and temperature of the system 1, and this information may include information about each type of information when the system 1 is in the working state.
  • the instantaneously detected data is continuously detected within a set time interval, or a collection of multiple data detected at discrete time points, or the average of multiple data.
  • the information of current, voltage, power consumption, load, and temperature generally indicates the information of the system 1 in the working state.
  • the detected information may come from part or all of the power management unit 12, the system on chip 14, the motherboard and other devices.
  • the information may include the operating current (such as LDO current, DC-DC output current, etc.), input/output voltage, power consumption, and temperature of the power management unit 12, and the current, voltage, frequency, load of the system-on-chip 14 , Temperature and other information, and temperature information of the motherboard.
  • the range of judgment for abnormal power supply of the system can be more comprehensive, the judgment accuracy is higher, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the abnormality detection unit 1022 can also compare the detected information with the corresponding threshold to detect whether the system has power supply abnormality. If the power supply abnormality is detected, it generates and provides power supply abnormality information. The power supply abnormality information indicates that the system 1 has at least one The information-related power supply is abnormal.
  • the power supply abnormality information may include, but is not limited to, voltage undervoltage abnormalities and overvoltage abnormalities, current undercurrent abnormalities and overcurrent abnormalities, low temperature abnormalities and high temperature abnormalities, and excessive power consumption abnormalities, etc. Other abnormalities related to the above detection information.
  • the detection of power supply abnormalities can also be implemented by machine learning of a deep learning model, and machine learning can enhance the judgment and detection of power supply abnormalities.
  • machine learning can be implemented on one or more components of the system 1.
  • the above-mentioned detected data can be used as sample data to train a machine learning model.
  • user data that may be contained in the data has been desensitized, or the user has explicitly obtained permission to use the sample data for training.
  • the machine learning model can predict the power supply abnormality of the system according to the received various information of the system in the working state, and then provide the abnormality as a predicted abnormality.
  • the abnormality processing unit 1042 sends a control signal according to the abnormal power supply information, so that the system 1 adjusts at least one of the above-mentioned multiple types of information to prevent the system 1 from restarting or shutting down due to abnormal power supply.
  • the restart or shutdown of the system 1 due to abnormal power supply is due to the working current, input/output voltage, power consumption, or temperature of the power management unit 12 triggering the protection circuit of the power management unit 12, so that the power management unit 12 A restart or shutdown instruction is issued to the processor of the system-on-chip 14, and then the power management unit 12 turns off the power, or in some cases, after the protection circuit is triggered, the power management unit 12 directly turns off the power.
  • the shutdown threshold indicates the critical value that triggers the protection circuit preset by the system 1 to cause the power to shut down.
  • the control signal sent by the abnormality processing unit 1042 may include a voltage increase/decrease signal, a frequency increase/decrease (load) signal, a temperature increase/decrease signal, and a CPU interrupt signal.
  • the boost/decrease signal can increase or decrease (Boost or Buck) the input/output voltage of the power management unit 12, and the boost/decrease frequency (load) signal can increase or decrease the frequency of processing units such as CPU, GPU, etc.
  • the temperature drop signal can physically adjust the temperature of one or more components of the system through the temperature adjustment device of the system.
  • the temperature regulator may include cooling equipment (for example, air-cooled, water-cooled or oil-cooled equipment, etc.) of the motherboard and the system-on-chip 14 and heating equipment on the load/power supply side.
  • the temperature regulator may receive a control instruction from the processor 142, or directly receive a temperature increase/decrease signal from the abnormality processing unit 1042 through a hardware connection.
  • the power supply protection device may further include an abnormality encoding unit 1024 and a corresponding abnormality decoding unit 1044.
  • the anomaly encoding unit 1024 is configured to encode the anomaly information provided by the anomaly detection unit 1022 to generate encoded power supply anomaly information.
  • the abnormality decoding unit 1044 decodes the encoded power supply abnormality information to obtain corresponding power supply abnormality information.
  • the encoding method may adopt binary encoding, such as forming the following methods: overvoltage: 001, overcurrent: 010, high temperature: 011, undervoltage: 100, undercurrent: 101, low temperature: 110, and others: 000.
  • the combined detected information may also be encoded.
  • the combined detected information may also be encoded.
  • For current information suppose there are L data, Cur_1, Cur_2...Cur_L; for temperature information, suppose there are M data, Temp_1, Temp_2...Temp_M; for voltage information, suppose there are N data, Vol_1, Vol_2...Vol_N;
  • For power consumption information suppose there are 0 pieces of data, Pwr_1, Pwr_2...Pwr_O; for load performance information, suppose there are P pieces of data, LDP_1, LDP_2...LDP_P.
  • each code includes the full set of data on current, temperature, voltage, power consumption and load performance, such as ⁇ Cur_1, Temp_1, Vol_1, Pwr_1, LDP_1 ⁇ .
  • the information capacity can be reduced, the bandwidth occupancy during information transmission can be reduced, and the information transmission efficiency can be improved.
  • the transceiver unit 106 is used to receive the above-mentioned information of the system 1 in the working state, and transmit it to the abnormality detection unit 1022, and the transceiver unit 106 is also used to receive the abnormality detection unit 1022 to generate
  • the abnormal power supply information (uncoded or coded) is transmitted to the abnormal processing unit 1042, and the control signal generated by the abnormal processing unit 1042 is transmitted to the power management unit 12 and/or the system on chip 14. It is understandable that the transceiving units 106a-106b have part or all of the functions of the transceiving unit 106.
  • the transceiving unit 106a can transmit the above-mentioned information of the system 1 in the working state to the abnormality detection unit 1022 and the abnormality processing unit 1042.
  • the power supply abnormality information (uncoded or coded) generated by the abnormality detection unit 1022 is transmitted.
  • the transceiver unit 106b can receive power supply abnormal information (uncoded or coded) generated from the abnormality detection unit 1022, and then transmit the abnormal information to the abnormality processing unit 1042, and transmit the control signal generated by the abnormality processing unit 1042 to the power management Unit 12 and/or System on Chip 14.
  • the transceiver unit 106 (or 106a-106b) can be implemented by a circuit or a software interface. As shown in FIGS. 1a-1d and FIGS. 2c-2d, the transceiver unit may exist in the power management unit 12, or exist in the system on chip 14, or exist in other positions of the system 1, such as a motherboard. According to another embodiment, the transceiver unit may also exist in the power management unit 12 and the system on chip 14 at the same time, or exist in the power management unit 12, the motherboard and the system on chip 14 at the same time.
  • a system with a power supply protection device is compared with an existing system without the device, for example, in the same low-temperature scenario, even if the battery capacity of the system described herein is more than 10% lower than that of the existing system. %, you can also keep the system running without shutting down. In the test, the existing system shuts down at -10°C and at 18% power, while the system with the power supply protection device shuts down at -10°C and 9% power.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, and high current scenarios.
  • the system of the equipment maintains lower voltage operation without shutting down.
  • Figures 2a-2d show block diagrams of example power protection devices that can implement one or more of the features described herein.
  • the power supply protection device shown in FIGS. 2a, 2c, and 2d may be the abnormality detection device 102.
  • the abnormality detection device 102 receives the temperature information 201, voltage information 202, load information 203, current information 204, and power consumption information 205 of the system 1 through the transceiver unit 106a. This information comes from at least a part of the power management unit 12 located on the power supply side of the system 1, the system on chip 14 located on the load side of the system 1, and other devices such as motherboards.
  • the above-mentioned information is acquired through sensing devices/modules arranged in the system 1, for example, temperature sensors, current/voltage sensing modules, etc. respectively arranged in the power management unit 12, the system on chip 14 and the motherboard.
  • the range of judgment for abnormal power supply of the system can be more comprehensive, the judgment accuracy is higher, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the abnormality detection unit 1022 compares the received information with the corresponding threshold, and detects whether the system has abnormal power supply.
  • the threshold can be set based on various power supply parameters and temperature parameters in the working state of the system.
  • the undervoltage threshold on the power supply side may be lower than the input/output voltage of the power management unit 12 in the working state of the system. A specific voltage value or a specific percentage.
  • the overcurrent threshold on the power supply side may be a specific current value or a specific percentage higher than the operating current of the power management unit 12 in the system working state.
  • the corresponding threshold for detecting abnormal power supply is different from the aforementioned shutdown threshold. It can be understood that the abnormal power supply threshold has a certain margin compared with the shutdown threshold, so that the detected abnormal power supply will not trigger power management. Unit 12 is powered off.
  • the power supply abnormality information may include information indicating that a low voltage phenomenon occurs on the power supply side of the system 1.
  • the abnormality detection unit 1022 compares the input/output voltage of the power management unit 12 received from the transceiver unit 106a with the undervoltage threshold, and if the input/output voltage is lower than the undervoltage threshold, the abnormality detection unit 1022 generates undervoltage abnormal information .
  • the power supply abnormality information may also include information indicating that the power supply side of the system 1 has excessive current, excessive power consumption, or excessive current and excessive power consumption.
  • the abnormality detection unit 1022 compares the operating current and power consumption of the power management unit 12 received from the transceiver unit 106a with the overcurrent threshold and the high power consumption threshold, respectively. If the operating current is greater than the overcurrent threshold and the power consumption is greater than the high power consumption, If the threshold value, or both the operating current and the power consumption are greater than the threshold value, the abnormality detection unit 1022 generates corresponding power supply abnormality information.
  • the abnormality detection unit 1022 receives the operating current and output voltage of the power management unit 12 from the transceiver unit 106a, and detects the power consumption according to the operating current and voltage, or according to the overcurrent threshold and the overvoltage threshold. Check whether the power consumption is too large.
  • the power supply abnormality information may further include information indicating that the temperature of the power supply side and/or the load side of the system 1 is too high or too low.
  • the abnormality detection unit 1022 compares the temperature information of the system 1 received from the transceiver unit 106a with a temperature threshold, where the temperature information may include at least one of the temperature of the power management unit 12, the temperature of the motherboard, or the temperature of the system on chip 14 ,
  • the temperature threshold may include at least one of thresholds corresponding to various temperature information.
  • the temperature information may include a weighted average of the temperature of the power management unit 12, the temperature of the motherboard or the temperature of the system on chip 14, and the temperature threshold may include a corresponding temperature threshold corresponding to the averaged temperature.
  • the abnormality detection unit 1022 compares the received temperature information with a low temperature threshold or a high temperature threshold. If the temperature is lower than the low temperature threshold, the abnormality detection unit 1022 generates low temperature abnormality information, and if the temperature is higher than the high temperature threshold, generates high temperature abnormality information.
  • the abnormality detection device 102 optionally includes an abnormality encoding unit 1024.
  • an abnormality encoding unit 1024 For the description of the abnormal coding unit 1024, reference may be made to the related descriptions of FIGS. 1a-1d, which will not be repeated here.
  • the abnormality detection device 102 may further include one or more units in the abnormality processing device 104 shown in FIGS. 1a-1d and 2b-2d.
  • the exception handling device 104 is described below with reference to FIGS. 2b-2d.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • Figure 2b shows a block diagram of another example power supply protection device that can implement one or more of the features described herein.
  • the power supply protection device shown in FIGS. 2b-2d is the abnormality handling device 104.
  • the abnormality handling device 104 sends a control signal according to the power supply abnormality information, and sends the control signal to the parameter adjustment device/module of the system 1 through the transceiver unit 106b, so that the system can pass the temperature
  • the parameter adjustment devices/modules of adjustment 211, voltage adjustment 212, load performance adjustment 213, current adjustment 214, and power consumption adjustment 215 adjust the corresponding working parameters of the system to prevent the system 1 from restarting or shutting down due to abnormal power supply.
  • the abnormal power supply information includes various examples of abnormal power supply information listed in the foregoing description of FIGS. 1a-1d and 2a.
  • various power supply abnormalities or combinations of abnormalities in the system can be adjusted by one or more adjustment devices/modules. For example, when the temperature is abnormal and the temperature is too high, you can reduce the system load, reduce the operating frequency, reduce the operating voltage, limit the system power consumption, or trigger the system to cool down physically; when the temperature is too low, you can increase the system load and change Working frequency, increasing working voltage, increasing system power consumption, can also trigger the system to physically heat up.
  • the abnormality processing unit 1042 sends a control signal to reduce the operating frequency of the load side of the system 1 and then reduce the operating voltage of the load side.
  • the amplitude of reducing the frequency and voltage is preset according to the working requirements of the system. For example, frequency reduction and voltage reduction can be performed for large load modules on the load side, such as CPU, GPU, multimedia, AI processor, etc., and voltage reduction is performed after the frequency reduction is completed.
  • the abnormality processing unit 1042 may also issue a reduction in the operating frequency of the load side of the system 1, and then reduce the load side The control signal of the working voltage.
  • the abnormality processing unit 1042 may send a variety of control signals according to the phenomenon of low temperature on the power supply side and/or the load side, including: increasing the output voltage of the power supply side, reducing the operating frequency of the load side, and increasing the power supply side. Increase the output voltage and reduce the operating frequency on the load side, and/or increase the temperature on the load side.
  • the abnormality processing unit 1042 may send various control signals, including: reducing the operating frequency of the load side and then reducing the operating voltage of the load side, and/or Reduce the temperature on the load side.
  • the increase and decrease of the frequency and voltage can be implemented by transmitting the control signal to the processor 142, or can be implemented by directly transmitting the control signal to the CRG 144 and the power management unit 12.
  • the temperature increase and decrease are implemented by transmitting control signals to the processor 142.
  • the above-mentioned various power supply abnormalities may be prioritized, and the power supply abnormalities may be further processed according to the priority.
  • the priority from high to low is as follows: overcurrent and/or excessive power consumption abnormalities, this scenario often occurs during normal work, and the probability of occurrence is the greatest; undervoltage abnormalities, this scenario is when the power supply voltage is low (For example, when the battery voltage is low), it has a relatively large impact on the system; high temperature is abnormal, this scenario requires the system to work under high load for a certain period of time, which causes the temperature to rise, and the temperature rise time is from a few hundred milliseconds to the second The speed of voltage, current, and power consumption changes is slow; the last is low temperature abnormality.
  • This scenario generally occurs when the ambient temperature changes, and the working temperature drops from normal temperature to low temperature for at least seconds.
  • a system with a power supply protection device is compared with an existing system without the device, for example, in the same low-temperature scenario, even if the battery capacity of the system described herein is more than 10% lower than that of the existing system. %, you can also keep the system running without shutting down. In the test, the existing system shuts down at -10°C and at 18% power, while the system with the power supply protection device shuts down at -10°C and 9% power.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, and high current scenarios.
  • the system of the equipment maintains lower voltage operation without shutting down.
  • FIG. 3 shows a flowchart of an example method 300 of power supply protection according to some embodiments.
  • the method 300 is implemented on an electronic device, for example, on the system 1 as shown in FIGS. 1a-1d.
  • some or all of the method 500 is implemented on the power management unit 12, the power supply protection device 10, and/or the system on chip 14 as shown in FIGS. 1a-1d.
  • different components of the power supply protection device 10, the abnormality detection device 102, and/or the abnormality processing device 104 implement different blocks or other parts of the method 300.
  • the received measurement information is compared with the corresponding threshold to detect whether the electronic device is abnormal; and when the electronic device is detected to be abnormal, power supply abnormal information is generated to indicate that the electronic device has two parameters Power supply abnormality related to at least one of the parameters.
  • the power supply abnormality information is encoded and decoded.
  • a control signal is generated to reduce the frequency of the load-side device of the electronic equipment, and then reduce the output voltage of the power-supply-side device according to the power supply abnormal information indicating that the power supply side device in the working state of the electronic device is under-voltage.
  • a control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the parameter adjuster includes the processor 142, the CRG 144, or the control circuit of the power management unit 12.
  • control signal can be transmitted to the CRG 144 and the power management unit 12 through the hardware connection.
  • the CRG 144 After the CRG 144 receives the control signal, it will respond to heavy load modules such as CPU, GPU, multimedia, AI processor, etc. on the load side. Perform frequency reduction processing.
  • the power management unit 12 receives the control signal and reduces the output voltage after the frequency reduction is completed, thereby reducing the working voltage of the heavy load module.
  • the amplitude of reducing the frequency and voltage is preset according to the working requirements of the system.
  • the hardware connection directly sends control signals to the CRG 144 and the power management unit 12 to handle the power supply abnormality, which can achieve rapid response to the power supply abnormality. For example, directly using the CRG 144 frequency reduction can achieve a response speed of nanoseconds, and the power management unit 12 can achieve a response speed of microseconds.
  • control signal may be transmitted to the processor 142, and the processor 142 executes an interrupt after receiving the control signal, and then invokes the power supply control application of the system to reduce the frequency of the load module and reduce the output voltage of the power management unit 12.
  • the operating frequency and the output voltage can be adjusted more flexibly and carefully, so that the processing of the abnormal power supply is more accurate and flexible.
  • the difference between the input/output voltage of the undervoltage of the power management unit 12 and the shutdown voltage threshold of the power management unit 12 is greater than a predetermined value. Greater than the predetermined value, it can be considered that the margin between the undervoltage input/output voltage and the shutdown voltage threshold is large, and the shutdown risk is low; if the difference is less than the predetermined value, it can be considered that the input/output voltage and the shutdown voltage threshold are different The margin is small and the shutdown risk is high.
  • the predetermined value can be preset by factors such as system work requirements and work environment.
  • the control signal may be transmitted to the processor 142,
  • the processor 142 executes an interrupt after receiving the control signal, and then calls the power supply control application of the system to reduce the frequency of the load module and reduce the output voltage of the power management unit 12.
  • the control signal can be transmitted to the CRG 144 and the power management unit 12 through the hardware connection. After the CRG 144 receives the control signal, it will affect the load side such as CPU, GPU, multimedia, AI processor, etc.
  • the load module performs frequency reduction processing.
  • the power management unit 12 receives the control signal and reduces the output voltage after the frequency reduction is completed, thereby reducing the working voltage of the heavy load module.
  • the control signal can be first transmitted to the CRG 144 and the power management unit 12 through the hardware connection. After the corresponding frequency reduction and voltage reduction operations are completed, the control signal can also be transmitted to the processor 142, and the system can be further reduced in frequency and voltage through the power supply control application.
  • the system can be effectively prevented from shutting down without affecting the operation of the system as much as possible.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, and high current scenarios.
  • the system of the equipment maintains lower voltage operation without shutting down.
  • FIG. 4 shows a flowchart of an example method 400 of power supply protection according to some embodiments.
  • the method 400 is implemented on an electronic device, for example, on the system 1 as shown in FIGS. 1a-1d.
  • some or all of the method 400 is implemented on the power management unit 12, the power supply protection device 10, and/or the system on chip 14 as shown in FIGS. 1a-1d.
  • different components of the power supply protection device 10, the abnormality detection device 102, and/or the abnormality processing device 104 implement different blocks or other parts of the method 400.
  • the received measurement information is compared with the corresponding threshold to detect whether the electronic device is abnormal; and when the electronic device is detected to be abnormal, power supply abnormal information is generated to indicate that the electronic device has two parameters Power supply abnormality related to at least one of the parameters.
  • the power supply abnormality information is encoded and decoded.
  • a control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the parameter adjuster includes the processor 142, the CRG 144, or the control circuit of the power management unit 12.
  • control signal can be transmitted to the CRG 144 and the power management unit 12 through the hardware connection.
  • the CRG 144 After the CRG 144 receives the control signal, it will respond to heavy load modules such as CPU, GPU, multimedia, AI processor, etc. on the load side. Perform frequency reduction processing.
  • the power management unit 12 receives the control signal and reduces the output voltage after the frequency reduction is completed, thereby reducing the working voltage of the heavy load module.
  • the amplitude of reducing the frequency and voltage is preset according to the working requirements of the system.
  • the hardware connection directly sends control signals to the CRG 144 and the power management unit 12 to handle the power supply abnormality, which can achieve rapid response to the power supply abnormality. For example, directly using the CRG 144 frequency reduction can achieve a response speed of nanoseconds, and the power management unit 12 can achieve a response speed of microseconds.
  • control signal may be transmitted to the processor 142, and the processor 142 executes an interrupt after receiving the control signal, and then invokes the power supply control application of the system to reduce the frequency of the load module and reduce the output voltage of the power management unit 12.
  • the operating frequency and the output voltage can be adjusted more flexibly and carefully, so that the processing of the abnormal power supply is more accurate and flexible.
  • the predetermined value can be preset by factors such as system work requirements and work environment.
  • the control signal can be transmitted to the processor 142.
  • the processor 142 executes an interrupt after receiving the control signal, and then calls the system's power supply control application to the load module. Perform frequency reduction and reduce the output voltage of the power management unit 12. If the difference is less than the predetermined value, the control signal can be transmitted to the CRG 144 and the power management unit 12 through the hardware connection.
  • the load module performs frequency reduction processing.
  • the power management unit 12 receives the control signal and reduces the output voltage after the frequency reduction is completed, thereby reducing the working voltage of the heavy load module.
  • the control signal may be transmitted through the hardware connection first.
  • the control signal can also be transmitted to the processor 142, and the system can be further reduced in frequency and voltage through the power supply control application.
  • the system can be effectively prevented from shutting down without affecting the operation of the system as much as possible.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, and high current scenarios.
  • the system of the equipment maintains lower voltage operation without shutting down.
  • FIG. 5 shows a flowchart of an example method 500 of power supply protection according to some embodiments.
  • the method 500 is implemented on an electronic device, for example, on the system 1 shown in FIGS. 1a-1d.
  • some or all of the method 500 is implemented on the power management unit 12, the power supply protection device 10, and/or the system on chip 14 as shown in FIGS. 1a-1d.
  • different components of the power supply protection device 10, the abnormality detection device 102, and/or the abnormality processing device 104 implement different blocks or other parts of the method 500.
  • the received measurement information is compared with the corresponding threshold to detect whether the electronic device is abnormal; and when the electronic device is detected to be abnormal, power supply abnormal information is generated to indicate that the electronic device has two parameters Power supply abnormality related to at least one of the parameters.
  • the power supply abnormality information is encoded and decoded.
  • a control signal for increasing the output voltage of the power supply side device is generated to reduce the load side device. At least one of a control signal for the frequency of the device, a control signal for increasing the output voltage of the power supply side device and lowering the frequency of the load side device, and a control signal for increasing the temperature of the load side device.
  • a control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the means of reducing the operating frequency of the load side and increasing/decreasing the output voltage of the power supply side can be referred to the description in the above method implementation, which will not be repeated here.
  • Increasing/decreasing the temperature on the load side can control the main board and the system-on-chip 14 and cooling equipment (for example, air-cooled, water-cooled or oil-cooled equipment, etc.) or heating equipment on the load/power supply side through software or hardware.
  • cooling equipment for example, air-cooled, water-cooled or oil-cooled equipment, etc.
  • heating equipment on the load/power supply side through software or hardware.
  • the predetermined value can be preset by factors such as system work requirements and work environment.
  • the control signal may be transmitted to the processor 142, and the processor 142 may execute an interrupt after receiving the control signal, and then Invoke the power supply control application of the system to reduce the frequency of the load module and/or increase the output voltage of the power management unit 12. While performing the above operations or alternatively, the processor 142 sends a temperature increase signal to the temperature regulator after receiving the control signal. After receiving the instruction, the temperature regulator controls the heating device to heat the power supply side and/or the load side.
  • the control signal can be transmitted to the CRG 144 and the power management unit 12 through the hardware connection.
  • the CRG 144 After the CRG 144 receives the control signal, it will affect the load side such as CPU, GPU, multimedia, AI processor, etc.
  • the load module performs frequency reduction processing.
  • the power management unit 12 After receiving the control signal, the power management unit 12 increases the output voltage, thereby increasing the working voltage on the load side.
  • the control signal can be transmitted to the temperature regulator through the hardware connection, and after receiving the signal, the temperature regulator controls the heating device to heat the power supply side and/or the load side.
  • the control signal can be transmitted to the CRG 144, the power management unit 12 and the temperature regulator through the hardware connection first, and then the corresponding frequency reduction is completed. After the voltage increase or temperature increase operation, the control signal can also be transmitted to the processor 142, and the system can be further reduced in frequency and voltage increased through the power supply control application.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, and high current scenarios.
  • the system of the equipment maintains lower voltage operation without shutting down.
  • FIG. 6 shows a flowchart of an example method 600 of power supply protection according to some embodiments.
  • the method 600 is implemented on an electronic device, for example, on the system 1 as shown in FIGS. 1a-1d.
  • some or all of the method 600 is implemented on the power management unit 12, the power supply protection device 10, and/or the system on chip 14 as shown in FIGS. 1a-1d.
  • different components of the power supply protection device 10, the abnormality detection device 102, and/or the abnormality processing device 104 implement different blocks or other parts of the method 600.
  • the received measurement information is compared with the corresponding threshold to detect whether the electronic device is abnormal; and when the electronic device is detected to be abnormal, power supply abnormal information is generated to indicate that the electronic device has two parameters Power supply abnormality related to at least one of the parameters.
  • the power supply abnormality information is encoded and decoded.
  • a control signal is sent to a parameter adjuster of at least one of the power supply side device and the load side device.
  • the means of reducing the operating frequency of the load side and increasing/decreasing the output voltage of the power supply side can be referred to the description in the above method implementation, which will not be repeated here.
  • Increasing/decreasing the temperature on the load side can control the main board and the system-on-chip 14 and cooling equipment (for example, air-cooled, water-cooled or oil-cooled equipment, etc.) or heating equipment on the load/power supply side through software or hardware.
  • cooling equipment for example, air-cooled, water-cooled or oil-cooled equipment, etc.
  • heating equipment on the load/power supply side through software or hardware.
  • the control signal may be transmitted to the processor 142, and the processor 142 may execute an interrupt after receiving the control signal, and then Invoke the power supply control application of the system to reduce the frequency of the load module and reduce the output voltage of the power management unit 12.
  • the processor 142 receives the control signal and sends an instruction to reduce the temperature to the temperature regulator, After receiving the instruction, the temperature regulator controls the cooling equipment to cool down the power supply side and/or the load side.
  • the control signal can be transmitted to the CRG 144, the power management unit 12 and the temperature regulator through the hardware connection.
  • the CRG 144 receives the control signal, it processes the CPU, GPU, multimedia, and AI on the load side.
  • the heavy load module such as the device performs frequency reduction processing.
  • the power management unit 12 receives the control signal and reduces the output voltage after the frequency reduction is completed, thereby reducing the working voltage of the heavy load module. While performing the above operations or alternatively, the control signal can be transmitted to the temperature regulator through the hardware connection, and after receiving the signal, the temperature regulator controls the cooling device to cool the power supply side and/or the load side.
  • the control signal can be first transmitted to the CRG 144, the power management unit 12 and the temperature regulator through the hardware connection, and the corresponding frequency reduction is completed. After the voltage reduction or temperature reduction operation, the control signal can also be transmitted to the processor 142, and the system can be further reduced in frequency and voltage through the power supply control application.
  • the main board and the system on chip 14 and the cooling equipment can be controlled by software or hardware to perform physical cooling.
  • the abnormal power supply of the system can be judged comprehensively and accurately, and the power supply protection can be provided more accurately to avoid excessive protection.
  • the power supply protection device can improve the ability of the power supply protection device to handle power supply exceptions in complex work scenarios, and achieve low temperature, low voltage, and high current scenarios.
  • the system of the equipment maintains lower voltage operation without shutting down.
  • the device 700 may include one or more processors 702.
  • the device 700 may also include a memory 704 and a communication interface 706 coupled to the processor 702.
  • the memory may be integrated in the processor.
  • the processor 702 may include one or more single-core or multi-core processors.
  • the processor 702 may include any combination of a general-purpose processor and a special-purpose processor (for example, a graphics processor, an application processor, a baseband processor, etc.).
  • the processor 702 may be configured to execute one or more embodiments according to the various embodiments shown in FIGS. 3-6.
  • the memory 704 may be used to load and store, for example, data and/or instructions for the device 700.
  • the memory 704 may include any suitable volatile memory, such as a suitable dynamic random access memory (DRAM).
  • DRAM dynamic random access memory
  • the memory 704 may include one or more tangible, non-transitory computer-readable media for storing data and/or instructions.
  • the memory 704 may include, but is not limited to, a non-transitory tangible arrangement of objects manufactured or formed by machines or equipment, which includes storage media, such as hard disks, any other types of disks, including floppy disks, optical disks, compact disk read-only memory (CD-ROM), compact disk rewritable (CD-RW) and magneto-optical disk; semiconductor devices such as read only memory (ROM), such as dynamic random access memory (DRAM) and static random access memory (SRAM) Random access memory (RAM), erasable programmable read-only memory (EPROM), flash memory, electrically erasable programmable read-only memory (EEPROM); phase change memory (PCM); magnetic or optical card; or Any other type of medium suitable for storing electronic instructions.
  • ROM read only memory
  • DRAM dynamic random access memory
  • SRAM static random access memory
  • RAM erasable programmable read
  • the memory 704 may contain instructions or contain design data, such as a hardware description language (HDL), which defines the structures, circuits, devices, processors, and/or system features described herein. These embodiments are also called program products.
  • HDL hardware description language
  • the memory 704 may include storage resources that are physically part of the installation device 700, or it may be accessed by the device 700, but not necessarily a part of the device 700.
  • the storage 704 can be accessed through the network via the communication interface 706.
  • the memory 704 may specifically include temporary or permanent copies of instructions.
  • the instructions may include instructions that, when executed by at least one processor 702, cause the device 700 to implement the power supply protection method described with reference to FIGS. 3-6.
  • the communication interface 706 may include any transceiving unit as shown in FIGS. 1a-2d to provide a signal transmission interface for the device 700.
  • Program code can be applied to input instructions to perform the functions described herein and generate output information.
  • the output information can be applied to one or more output devices in a known manner.
  • a processing system includes any system having a processor such as, for example, a digital signal processor (DSP), a microcontroller, an application specific integrated circuit (ASIC), or a microprocessor.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • the program code can be implemented in a high-level programming language or an object-oriented programming language to communicate with the processing system.
  • assembly language or machine language can also be used to implement the program code.
  • the mechanisms described in this article are not limited to the scope of any particular programming language. In either case, the language can be a compiled language or an interpreted language.
  • IP cores can be stored on a tangible computer-readable storage medium and provided to multiple customers or production facilities to be loaded into the manufacturing machine that actually manufactures the logic or processor.
  • the instruction converter can be used to convert instructions from the source instruction set to the target instruction set.
  • the instruction converter may transform (for example, use static binary transformation, dynamic binary transformation including dynamic compilation), deform, emulate, or otherwise convert the instruction into one or more other instructions to be processed by the core.
  • the instruction converter can be implemented by software, hardware, firmware, or a combination thereof.
  • the instruction converter may be on the processor, off the processor, or part on the processor and part off the processor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Static Devices (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Power Sources (AREA)

Abstract

L'invention concerne un procédé de protection d'alimentation électrique, et un système avec une fonction de protection d'alimentation électrique. Le système comprend : une unité de réception d'émission (106) et une unité de détection d'anomalie (1022), dans lequel l'unité de réception d'émission (106) reçoit des informations de mesure dans divers paramètres pour un dispositif électronique dans un état de travail, et les informations de mesure sont obtenues, au moyen de l'unité de réception d'émission (106), en provenance d'un capteur situé dans au moins l'un parmi un appareil côté alimentation électrique et un appareil côté charge du dispositif électronique ; et l'unité de détection d'anomalie (1022) détecte, au moyen de la comparaison respective des informations de mesure reçues par l'unité de réception d'émission (106) avec des valeurs de seuil correspondantes et en fonction d'un résultat de la comparaison, si une anomalie se produit dans le dispositif électronique, et génère, dans le cas où il est détecté qu'une anomalie se produit dans le dispositif électronique, des informations d'anomalie d'alimentation électrique correspondantes pour indiquer qu'il existe un phénomène d'anomalie d'alimentation électrique lié à au moins un paramètre parmi au moins deux paramètres dans le dispositif électronique. Le procédé et le système selon la présente invention peuvent déterminer de manière complète et précise une anomalie de l'alimentation électrique du système, et peuvent fournir une protection de l'alimentation électrique de manière plus précise, de telle sorte que le système du dispositif électronique continue à fonctionner sans interruption dans des scénarios d'une basse température, d'une basse tension, d'un courant élevé, etc.
PCT/CN2019/095665 2019-07-12 2019-07-12 Procédé de protection d'alimentation électrique, et système avec fonction de protection d'alimentation électrique WO2021007682A1 (fr)

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PCT/CN2019/095665 WO2021007682A1 (fr) 2019-07-12 2019-07-12 Procédé de protection d'alimentation électrique, et système avec fonction de protection d'alimentation électrique

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CN116028207B (zh) * 2022-05-16 2024-04-12 荣耀终端有限公司 调度策略确定方法、装置、设备和存储介质
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