Electricity consumption estimation method and device and electronic equipment

Abstract

The invention provides an electricity consumption estimation method and device and electronic equipment, and relates to the technical field of DCDC converters, and the method comprises the steps: obtaining an input voltage, an output voltage and an output current of a DCDC converter; determining the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relation; determining an input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current; and calculating the power consumption of the DCDC converter and the power consumption of electric equipment connected with the output side of the DCDC converter according to the input current. The power consumption of the DCDC converter and the power consumption of the electric equipment can be calculated under the condition that an input current sampling circuit is not additionally arranged, the circuit complexity is reduced, and then the circuit layout difficulty and the product cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of DCDC converter, in particular to a power consumption estimation method and device and electronic equipment. BACKGROUND

[0002] With the improvement of the intelligence level of vehicles, the number of vehicle intelligent devices is increasing. Some of the devices (such as BMS continuous monitoring function, vehicle sentinel mode, vehicle refrigerator, etc.) still need to be kept running after the vehicle high-voltage system is powered off. In order to ensure the normal work of such devices, the DCDC (Direct Current to Direct Current) converter is used to take power from the high-voltage battery pack, and the high-voltage power output by the DCDC converter is converted into safe low-voltage to power the intelligent devices. Among them, accurately calculating the power consumption of the DCDC converter and the power consumption of the power consumption device is crucial to the power management of the high-voltage battery pack.

[0003] In related technologies, a current sampling circuit is added on the high-voltage side of the DCDC converter to collect the high-voltage side input current of the DCDC converter, and the power consumption of the DCDC converter and the power consumption device is calculated by integrating the high-voltage side input current. However, the addition of the high-voltage side input current sampling circuit increases the complexity of the circuit, and further increases the circuit layout difficulty and product cost. SUMMARY

[0004] The problem solved by the present application is how to reduce the complexity of the circuit, the difficulty of the circuit layout and the product cost when calculating the power consumption of the DCDC converter and the power consumption device.

[0005] To solve the above problems, the present application provides a power consumption estimation method, device, electronic equipment and storage medium.

[0006] In a first aspect, the present application provides a power consumption estimation method, comprising: obtaining an input voltage, an output voltage and an output current of a DCDC converter; determining an efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship includes a corresponding relationship between a target parameter of the DCDC converter and the efficiency; determining an input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current; calculating the power consumption of the DCDC converter and a power consumption device connected to the output side of the DCDC converter according to the input current.

[0007] Optionally, the determining the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset correspondence relationship comprises: correction of the input voltage, the output voltage and the output current by using a fitting formula respectively, to obtain a corrected input voltage, a corrected output voltage and a corrected output current; determining the efficiency according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset correspondence relationship.

[0008] Optionally, before the correction of the input voltage, the output voltage and the output current by using a fitting formula respectively, the method further comprises: obtaining a sampling value and an actual value of each to-be-calibrated parameter under different working conditions, wherein the to-be-calibrated parameters are the input voltage, the output voltage and the output current respectively; fitting each set of the sampling value and the actual value of the to-be-calibrated parameter under different working conditions by a one-time curve fitting method, to obtain the fitting formula corresponding to the to-be-calibrated parameter.

[0009] Optionally, the target parameters of the DCDC converter include a duty ratio and an output current of the DCDC converter; and the determining the efficiency according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset correspondence relationship comprises: determining the duty ratio of the DCDC converter according to the corrected input voltage and the corrected output voltage; determining the efficiency in the preset correspondence relationship according to the duty ratio and the corrected output current.

[0010] Optionally, the calculating the power consumption of the DCDC converter and a power consumption device connected to an output side of the DCDC converter according to the input current comprises: determining an input current cumulative value at a current sampling time according to the input current at the current sampling time and an input current cumulative value at a previous sampling time; comparing the input current cumulative value at the current sampling time with a cumulative value threshold; when the input current cumulative value at the current sampling time is greater than or equal to the cumulative value threshold, adding one to the power consumption at the previous sampling time to obtain the power consumption of the DCDC converter and the power consumption device at the current time; When the input current accumulated value at the current sampling time is less than the accumulated value threshold, a quotient of the input current accumulated value at the current sampling time and the accumulated value threshold is determined, the power consumption at the previous sampling time is added to the quotient to obtain the power consumption of the DCDC converter and the power consumption device at the current time.

[0011] Optionally, before the efficiency of the DCDC converter is determined according to the input voltage, the output voltage, the output current and the preset corresponding relationship, the method further comprises: obtaining an influence factor data combination of a target DCDC converter under different working conditions, wherein the influence factor data combination comprises an input voltage, an output voltage, an output current and an efficiency of the target DCDC converter; for each output current, determining a duty cycle according to the input voltage and the output voltage corresponding to the output current, and fitting the duty cycle and the efficiency to obtain a fitting formula corresponding to the output current; determining a plurality of different duty cycles, and for each duty cycle, determining the efficiency corresponding to the duty cycle according to the fitting formula corresponding to each output current; establishing the preset corresponding relationship according to the corresponding relationship among the duty cycle, the output current and the efficiency.

[0012] Optionally, the input current of the DCDC converter is determined according to the efficiency, the input voltage, the output voltage and the output current, and the method further comprises: determining a first product of the corrected output voltage and the corrected output current, and a second product of the corrected input voltage and the efficiency, dividing the first product by the second product to obtain the input current.

[0013] Optionally, after the power consumption of the DCDC converter and the power consumption device connected to the output side of the DCDC converter is calculated according to the input current, the method further comprises: obtaining an SOC value of a high-voltage battery pack connected to the input side of the DCDC converter, and subtracting the power consumption from the SOC value to obtain a corrected SOC value.

[0014] In a second aspect, the present application provides a power consumption estimation device, comprising: a collection module configured to obtain an input voltage, an output voltage and an output current of a DCDC converter; The query module is configured to determine the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between a target parameter of the DCDC converter and the efficiency. The calculation module is configured to determine the input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current, and to calculate the power consumption of the DCDC converter and the power-using device connected to the output side of the DCDC converter according to the input current.

[0015] In a third aspect, the present application provides an electronic device comprising a memory and a processor. The memory is configured to store a computer program. The processor is configured to implement the power consumption estimation method according to the first aspect when executing the computer program.

[0016] In a fourth aspect, the present application provides a computer readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the power consumption estimation method according to the first aspect is implemented.

[0017] The power consumption estimation method, device, electronic device and storage medium of the present application have the following advantages: the input voltage, output voltage and output current can be obtained by using the existing sampling circuit in the DCDC converter circuit, without the need to additionally add an input current sampling circuit. The efficiency of the DCDC converter is determined according to the input voltage, output voltage and output current in a preset corresponding relationship, wherein the preset corresponding relationship is obtained by pre-calibration, and the efficiency of the DCDC converter can be quickly and accurately determined. The input current can be determined based on the efficiency calculation formula according to the efficiency, input voltage, output voltage and output current, and the power consumption of the DCDC converter and the power-using device can be calculated according to the input current, for example, the power consumption can be calculated by using the input current through the ampere-hour integration method. The power consumption of the DCDC converter and the power-using device can be calculated without additionally adding an input current sampling circuit, which reduces the circuit complexity and further reduces the circuit layout difficulty and product cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a flowchart of a power consumption estimation method according to an embodiment of the present application; Figure 2 FIG. 2 is a flowchart of a power consumption calculation process according to an embodiment of the present application; Figure 3 FIG. 3 is a structural diagram of a power consumption estimation device according to an embodiment of the present application; Figure 4Fig. 1 is a structural schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided so as to make the present application more thorough and complete. It should be understood that the drawings and embodiments of the present application are merely for illustrative purposes, and are not intended to limit the scope of protection of the present application.

[0020] It should be understood that each of the steps recited in the method embodiments of the present application can be executed in different orders, and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the execution of the steps shown. The scope of the present application is not limited in this respect.

[0021] As used herein, the term "comprises" and its variations are open-ended, meaning "includes but not limited to"; the term "based on" is "based, at least in part, on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions of other terms will be given in the description below. It should be noted that the concepts mentioned in the present application as "first", "second", etc. are merely used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0022] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative rather than limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0023] The names of the messages or information exchanged between the multiple devices in the embodiments of the present application are merely for illustrative purposes, and are not intended to limit the scope of these messages or information.

[0024] In order to ensure that the BMS (Battery Management System, battery management system) continues to monitor function, vehicle sentinel mode, vehicle refrigerator and other equipment can still run after the vehicle high-voltage system is powered off, a low-power DCDC converter is usually installed in the high-voltage battery pack to take power from the high-voltage battery pack for power supply. Since the current sensor in the high-voltage battery pack is mainly used to monitor the large current output to the drive system, it cannot accurately sample the small current output to the low-power DCDC converter, which causes the BMS to be unable to calculate the ampere-hour integral value of the high-voltage side current of the low-power DCDC converter, that is, unable to calculate the power consumption of the low-power DCDC converter and the power consumption of the power consumption equipment connected thereto, thereby causing the SOC value of the high-voltage battery pack determined by the BMS to deviate from the actual SOC, so it is necessary to accurately determine the power consumption of the low-power DCDC converter and the power consumption of the power consumption equipment connected thereto to correct the SOC value of the high-voltage battery pack determined by the BMS.

[0025] In the related art, a current sampling circuit is added to the high-voltage side of the DCDC converter to sample the high-voltage side input current of the DCDC converter, and then the ampere-hour integral value of the high-voltage side input current is calculated. However, the high-voltage side input current sampling circuit includes an isolation chip, a peripheral sampling circuit, etc., and the addition of the current sampling circuit increases the complexity of the entire DCDC circuit, thereby increasing the circuit layout difficulty and product cost. Moreover, the high-voltage side input current range is small (generally 0-1A), and the current sampling circuit has a relatively large sampling deviation at a small current (generally 0-0.05A), so the calculation accuracy of the power consumption is poor.

[0026] To solve the problems in the above related art, the embodiment provides a power consumption estimation method and device, electronic equipment and storage medium.

[0027] As shown in Figure 1 The power consumption estimation method provided by the embodiment of the application comprises: S100, obtaining the input voltage, output voltage and output current of the DCDC converter.

[0028] Specifically, the input side of the DCDC converter is connected with the high-voltage battery pack, and the output side of the DCDC converter is connected with the power consumption equipment (such as BMS, sentinel system and vehicle refrigerator, etc.).

[0029] It should be noted that, since the input voltage, the output voltage and the output current are important parameters for ensuring safe, reliable and efficient operation of the DCDC converter, the DCDC converter is usually provided with a corresponding sampling circuit to collect the input voltage, the output voltage and the output current, for example, to collect the output voltage to realize closed-loop feedback control, overvoltage protection, etc., to collect the input voltage to realize feedforward compensation and input under-voltage protection, etc., and to collect the output current to realize load response optimization and overcurrent protection, etc. For most DCDC converters that only require basic voltage stabilization and core protection functions, it is not necessary to collect the input current, and therefore the DCDC converter usually does not need to be provided with a corresponding sampling circuit to collect the input current.

[0030] Therefore, in the embodiment, the input voltage, the output voltage and the output current of the DCDC converter can be collected by using the existing sampling circuit, and no additional sampling circuit is needed to collect the input current, thereby avoiding the increase in circuit complexity and product cost caused by the addition of the sampling circuit.

[0031] S200, determining the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship includes a corresponding relationship between a target parameter of the DCDC converter and the efficiency.

[0032] Specifically, a corresponding relationship between the target parameter of the DCDC converter and the efficiency is established in advance, and the preset corresponding relationship can be stored and represented in the form of a table and a graph, etc., wherein the target parameter can include the input voltage, the output voltage and the output current, and at this time, the preset corresponding relationship is a corresponding relationship between a parameter combination of the input voltage, the output voltage and the output current and the efficiency. When determining the efficiency, the efficiency corresponding to the parameter combination of the current input voltage, the output voltage and the output current is directly looked up in the preset corresponding relationship.

[0033] The target parameter can also be a conversion parameter calculated or converted from the input voltage, the output voltage and the output current, and at this time, the preset corresponding relationship is a corresponding relationship between the conversion parameter and the efficiency, which can save data storage memory resources. When determining the efficiency, the current conversion parameter is first calculated and determined according to the current input voltage, the output voltage and the output current, and then the efficiency corresponding to the current conversion parameter is looked up in the preset corresponding relationship.

[0034] S300, determining the input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current.

[0035] Specifically, according to an efficiency calculation formula of the DCDC converter, the input current is calculated by inputting the efficiency, the input voltage, the output voltage and the output current. The input current is estimated by the input voltage, the output voltage and the output current, without additionally adding a sampling circuit, thereby reducing the circuit complexity and the product cost.

[0036] S400, the power consumption of the DCDC converter and the power consumption device connected to the output side of the DCDC converter is calculated according to the input current.

[0037] Specifically, the ampere-hour integration method, artificial intelligence model and the like can be used to calculate the power consumption of the DCDC converter and the power consumption device, and the ampere-hour integration method can be preferably used.

[0038] In the embodiment, the existing sampling circuit in the DCDC converter circuit can be used to obtain the input voltage, the output voltage and the output current, without additionally adding an input current sampling circuit. The efficiency of the DCDC converter is determined according to the input voltage, the output voltage and the output current in a preset corresponding relationship, wherein the preset corresponding relationship is obtained by pre-calibration, and the efficiency of the DCDC converter can be quickly and accurately determined. The input current can be determined based on the efficiency calculation formula according to the efficiency, the input voltage, the output voltage and the output current, and the power consumption of the DCDC converter and the power consumption device can be calculated according to the input current, for example, the power consumption is calculated by the ampere-hour integration method using the input current. The present application can calculate the power consumption of the DCDC converter and the power consumption device without additionally adding an input current sampling circuit, thereby reducing the circuit complexity and further reducing the circuit layout difficulty and the product cost.

[0039] Moreover, compared with the large deviation of the current sampling circuit in small current sampling, the input current is obtained by processing the input voltage, the output voltage and the output current, and the accuracy is higher, thereby improving the calculation accuracy of the power consumption.

[0040] Alternatively, the efficiency of the DCDC converter is determined according to the input voltage, the output voltage, the output current and a preset corresponding relationship, comprising: The input voltage, the output voltage and the output current are respectively corrected by using a fitting formula, to obtain a corrected input voltage, a corrected output voltage and a corrected output current; The efficiency is determined according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset corresponding relationship.

[0041] Specifically, the fitting formula can be y=kx+b, where y represents the corrected parameter, x represents the parameter before correction, and k and b are parameter values obtained by pre-calibration. By substituting the input voltage, output voltage and output current into the corresponding fitting formula, the corrected input voltage, corrected output voltage and corrected output current can be obtained.

[0042] In this optional embodiment, the fitting formulas of the input voltage, output voltage and output current are established respectively in advance. After the input voltage, output voltage and output current are collected by the sampling circuit, the corresponding fitting formulas are used to correct the input voltage, output voltage and output current respectively, so as to obtain the corrected input voltage, corrected output voltage and corrected output current. This can effectively compensate for the deviation caused by the sampling circuit and improve the ADC (Analog to Digital Converter) sampling accuracy. Using the corrected input voltage, corrected output voltage and corrected output current to determine the efficiency can improve the accuracy of the obtained efficiency, and further improve the accuracy of the subsequent power consumption estimation.

[0043] Optionally, before the fitting formula is used to correct the input voltage, output voltage and output current respectively, the method further comprises: obtaining the sampling value and the actual value of each to-be-calibrated parameter under different working conditions, wherein the to-be-calibrated parameters are the input voltage, the output voltage and the output current respectively; fitting each group of the sampling value and the actual value of the to-be-calibrated parameter under different working conditions by a one-time curve fitting method to obtain the fitting formula corresponding to the to-be-calibrated parameter.

[0044] For example, the fitting formula is determined by calibrating the to-be-calibrated parameter to ensure that the input voltage, output voltage and output current meet the corresponding sampling accuracy after correction.

[0045] The sampling accuracy can be: the sampling accuracy of the output voltage and the input voltage is controlled within ±0.5%; when the output current is ≤5A, the output current sampling accuracy is controlled within ±0.02A, and when the output current is >5A, the output current sampling accuracy is controlled within ±1%; the calibration can be performed at room temperature, and the specific calibration process is as follows: The input voltage is set to the maximum input design voltage, the output voltage is set to {the minimum output design voltage / the maximum output design voltage} in steps, and the output current is set to 50% of the maximum output current under 50% load. / / maximum output design voltage}, wherein, and The output voltage (i.e., sample value, x_lv) and the instrument measured value (i.e., actual value, y_lv) reported by the DCDC converter through the bus (for example, CAN bus) are recorded each time at a uniform distribution between the minimum output design voltage and the maximum output design voltage.

[0046] 50% load operation, the output voltage is set to the rated value, and the input voltage is set to {minimum input design voltage / / maximum input design voltage} in steps, wherein, and The input voltage (i.e., sample value, x_hv) and the instrument measured value (i.e., actual value, y_hv) reported by the DCDC converter through the bus (for example, CAN bus) are recorded each time at a uniform distribution between the minimum input design voltage and the maximum input design voltage.

[0047] The input voltage is set to the maximum input design voltage, the output voltage is set to the rated value, and the constant current mode load is set to {30% load / 50% load / 70% load / 90% load} in steps, and the output current (i.e., sample value, x_lc) and the instrument measured value (i.e., actual value, y_lc) reported by the DCDC converter through the bus (for example, CAN bus) are recorded each time. According to the values of each set of sample values x and actual values y, the k and b values of the fitting curve (y=kx+b) are calculated by a one-time curve fitting method (least squares method), and the k and b values of the output voltage, output current, and input voltage are obtained, i.e., the corresponding fitting formula y=kx+b is determined.

[0048] After obtaining the k and b values of all physical quantities, the k and b values are downloaded to the calibration storage area of the Flash of the MCU connected to the sampling circuit through the bus (for example, CAN bus) communication.

[0049] After the k and b values are downloaded, the DCDC converter is powered off and restarted.

[0050] Optionally, an automatic calibration tool for the k and b values can be developed: since the k and b values in the corresponding fitting formula need to be calibrated for each sample, manual calibration of the k and b values occupies too much time, in order to improve the calibration efficiency and accuracy, an automatic calibration tool is developed, which is developed in CANoe (CAN open environment, CAN bus development environment) through CAPL language, communicates with the bench equipment such as low-voltage direct-current source, high-voltage direct-current source, electronic load, power analyzer, and controls the bench equipment according to the calibration conditions to realize automatic data acquisition and fitting function, and then downloads the k and b values of the output voltage, output current, and input voltage respectively to the calibration storage area of the Flash of the product MCU through CAN communication.

[0051] Optionally, the sampling accuracy after calibration is verified: after the k value and b value calibration of the output voltage, output current and input voltage, the sampling accuracy of the output voltage, output current and input voltage at different temperatures is verified to ensure that the sampling accuracy meets the requirements.

[0052] For example, the output voltage sampling value, output current sampling value and input voltage sampling value collected by the sampling circuit at different temperatures (such as normal temperature, high temperature or low temperature, etc.) and the output voltage actual value, output current actual value and input voltage actual value measured by a power meter are obtained, the output voltage sampling value, output current sampling value and input voltage sampling value are substituted into the corresponding fitting formula for correction to obtain the output voltage correction value, output current correction value and input voltage correction value, and the correction value of the sampling parameters (output voltage, output current and input voltage) is compared with the actual value to verify the sampling accuracy. For example: the absolute value of the difference between the input voltage correction value and the input voltage actual value is determined, the absolute value of the difference is compared with the preset accuracy threshold, and when the absolute value of the difference is less than the preset accuracy threshold, it is determined that the sampling accuracy meets the requirements; otherwise, it is determined that the sampling accuracy does not meet the requirements.

[0053] Optionally, the target parameters of the DCDC converter include the duty cycle and the output current of the DCDC converter; and the determining the efficiency according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset corresponding relationship comprises: determining the duty cycle of the DCDC converter according to the corrected input voltage and the corrected output voltage; determining the efficiency in the preset corresponding relationship according to the duty cycle and the corrected output current.

[0054] Specifically, when the target parameters of the DCDC converter include the duty cycle and the output current of the DCDC converter, the preset corresponding relationship is the corresponding relationship between the parameter combination of the duty cycle and the output current and the efficiency, then the current duty cycle of the DCDC converter is determined, and the corresponding efficiency is found in the preset corresponding relationship according to the current duty cycle and the output current, which can be determined by linear interpolation table lookup.

[0055] The relationship between the input voltage and the output voltage of the DCDC converter can be represented by the duty cycle D For example: for the DCDC converter using a transformer, since the current topology of the DCDC converter is hard switching, under the condition that the load is constant, the input voltage-output voltage relationship satisfies: , wherein, is the output voltage, is the input voltage, is the transformer fixed turns ratio, is the duty cycle for controlling the DCDC operation, thus the duty cycle can be determined according to the input voltage and the output voltage.

[0056] Therefore, according to the corrected input voltage and the corrected output voltage, the duty cycle can be obtained according to the duty cycle formula, and then the efficiency is determined by using the duty cycle and the corrected current in the preset corresponding relationship. The preset corresponding relationship represents the corresponding relationship between the duty cycle, the output current and the efficiency, which can simplify the calibration process of the preset corresponding relationship, reduce the data collection and processing work of calibration, and save the data storage memory resources.

[0057] Optionally, as shown in Figure 2 , the power consumption of the DCDC converter and the power consumption device connected to the output side of the DCDC converter is calculated according to the input current, which includes: determining the input current cumulative value at the current sampling time according to the input current at the current sampling time and the input current cumulative value at the previous sampling time; comparing the input current cumulative value at the current sampling time with the cumulative value threshold; when the input current cumulative value at the current sampling time is greater than or equal to the cumulative value threshold, the power consumption at the previous sampling time is added by one to obtain the power consumption of the DCDC converter and the power consumption device at the current time; when the input current cumulative value at the current sampling time is less than the cumulative value threshold, the quotient of the input current cumulative value at the current sampling time and the cumulative value threshold is determined, and the power consumption at the previous sampling time is added to the quotient to obtain the power consumption of the DCDC converter and the power consumption device at the current time.

[0058] Specifically, in order to simplify the calculation, reduce the processor load, and save the multiplication operation of current and time, the Ah integration is calculated by using two-step accumulation, and the specific implementation manner is as follows: , wherein, represents the ampere-hour integration value, i.e. the power consumption of the DCDC converter and the power consumption device, represents the input current, represents the current integration start time, i.e. the time when the DCDC converter starts to work, represents the current time, which can be the current integration end time, e.g. the time when the DCDC converter stops working, represents the scheduling period in software, specifically the time difference between and In order to ensure the restoration degree of discrete integration, .

[0059] Exemplarily, (1) the first step of current accumulation: , represents the input current accumulation value at the current moment, with the unit of A; represents the input current accumulation value at the previous moment, with the unit of A; represents the input current value at the current moment, with the unit of A, and the current is output in the positive direction when the DCDC works, that is, the current flows from the high-voltage side to the low-voltage side of the DCDC converter.

[0060] (2) the second step of Ah integral accumulation: , represents the Ah integral value at the current moment, with the unit of Ah; represents the Ah integral value at the previous moment, with the unit of Ah; in the software implementation, since the current continuous accumulation value is large, in order to prevent the overflow of the current accumulation value, the Ah integral secondary accumulation method is adopted, that is: when , , .

[0061] (3) since the software scheduling period is 10 ms, the conversion from Ams to Ah is 3600000 Ams = 1 Ah, so = 360000 = 1 Ah, and the condition for triggering the second step of Ah integral accumulation is > 36 0000.

[0062] In this optional embodiment, the data type in the software for calculating the power consumption can be float32. Since the accuracy will decrease after the accumulation value exceeds the threshold value, the data type in the software is limited by the maximum value, that is, the accumulation value threshold, which is set to 360000. The input current accumulation value of the DCDC converter will be continuously accumulated when working for a long time. In order to prevent the overflow of the input current accumulation value and cause error accumulation, when the input current accumulation value is greater than or equal to the accumulation value threshold, the power consumption is only added by 1 Ah, and the current input current accumulation value is subtracted by the accumulation value threshold (that is, 360000), so as to realize the reset of the accumulator, thereby avoiding error accumulation and improving the calculation accuracy of the power consumption.

[0063] Optionally, before determining the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and the preset corresponding relationship, the method further includes: obtaining a combination of influence factor data of a target DCDC converter under different working conditions, wherein the combination of influence factor data includes the input voltage, the output voltage, the output current and the efficiency of the target DCDC converter; For each of the output currents, a duty cycle is determined according to the input voltage and the output voltage corresponding to the output current, and the duty cycle and the efficiency are fitted to obtain a fitting formula corresponding to the output current; A plurality of different duty cycles are determined, and for each of the duty cycles, the efficiency corresponding to the duty cycle is determined according to the fitting formula corresponding to each of the output currents, respectively; The preset correspondence relationship is established according to the correspondence relationship between the duty cycle, the output current and the efficiency.

[0064] Exemplarily, a power meter is used for data acquisition, and data acquisition conditions can be combined according to output voltages of {maximum output design voltage, minimum output design voltage}, output currents of {0.3, 0.45, 0.6, 0.75, 1, 1.5, 2.5, 3.5, 5, 6.5, 8.5, 10.5, …, rated current}, and input voltages of {minimum input voltage, …, 450, 500, 550, 600, …, maximum input voltage}, and data under different conditions is acquired.

[0065] The acquired influence factor data combination needs to include actual output voltage, actual output current, actual input voltage and actual efficiency measured by the power meter, and can also include output voltage, output current, input voltage, duty cycle, DCDC temperature and other signals reported by the DCDC converter to the data automatic acquisition tool through bus (for example, CAN bus) communication. The data reported by the DCDC converter to the data automatic acquisition tool can be verified by using the actual data measured by the power meter.

[0066] The duty cycle and efficiency data acquired under each output current in the output current set {0.3, 0.45, 0.6, 0.75, 1, 1.5, 2.5, 3.5, 5, 6.5, 8.5, 10.5, …, rated current} are polynomial fitted to obtain a fitting formula corresponding to each output current in the output current set {0.3, 0.45, 0.6, 0.75, 1, 1.5, 2.5, 3.5, 5, 6.5, 8.5, 10.5, …, rated current} {y1, y2, y3, y4, y5, y6, y7, y8, y9, y11, y12, y13, …, yn}; the plurality of duty cycle values {0.015, 0.025, 0.05, 0.1, 0.12, 0.14, 0.16, 0.2, …, Dn} determined in advance are respectively brought into the fitting formula under different output currents to obtain the efficiency under different output currents 、 、 、 、 、…、 Finally, the preset corresponding relationship is established according to the efficiency values under different output currents and duty cycles.

[0067] Specifically, each output current in the output current set {0.3, 0.45, 0.6, 0.75, 1, 1.5, 2.5, 3.5, 5, 6.5, 8.5, 10.5, …, rated current} can be taken as a column, and a plurality of different duty cycle values {0.015, 0.025, 0.05, 0.1, 0.12, 0.14, 0.16, 0.2, …, Dn} can be taken as rows to construct a table (as shown in Table 1), and the corresponding efficiency is filled in the constructed table to obtain a table corresponding to the preset corresponding relationship.

[0068]

[0069] Table 1: Constructed table It is worth noting that the values and value intervals of the rows and columns in the table are set according to the efficiency test data, and the rationality of the values of the rows and columns directly affects the accuracy of the efficiency table lookup. The more dense the value interval, the more accurate the efficiency value obtained by linear interpolation table lookup. Preferably, the difference between the actual efficiency measured by the power meter and the efficiency determined by the data reported by the DCDC converter can be calculated, and the data interval can be set more closely in places where the difference is larger, and the data interval can be set more sparsely in places where the difference is smaller. For example, when the difference is greater than a first preset threshold, a plurality of duty cycles within the preset range of the duty cycle corresponding to the current actual efficiency are set as rows, and a plurality of output currents within the preset range of the output current corresponding to the current actual efficiency are set as columns. The first preset threshold and the preset range are set according to the actual situation.

[0070] In this optional embodiment, the relationship between the input voltage, output voltage, output current and efficiency of the DCDC converter is simplified to the relationship between the duty cycle, output current and efficiency, which can simplify the calibration process of the preset corresponding relationship, reduce the data collection and processing work, and save data storage memory resources.

[0071] The factors affecting the working efficiency of the DCDC converter mainly include input voltage, output voltage, output current, temperature and product consistency. The efficiency affecting factors can be analyzed in advance. The efficiency affecting analysis test conditions are that the environmental temperature is selected from {-35℃, 25℃, 55℃}, the test samples are selected from {the largest sample, the median sample, the smallest sample}, the input voltage is selected from {the minimum input design voltage, …, 450, 500, 550, 600, …, the maximum input design voltage}, the output voltage is selected from {the minimum output design voltage, the rated output voltage, the maximum output design voltage}, and the output current is selected from {0.3, 0.45, 0.6, 0.75, 1, 1.5, 2.5, 3.5, 5, 6.5, 8.5, 10.5, …, the rated current}. The output voltage, the output current and the input voltage are measured by power, and the sampling accuracy is higher and more stable. At the same time, the development of the data automatic collection tool is supported. The working efficiency of the DCDC converter is tested by using the control single variable method. It can be known from the data analysis that the influence of the input voltage, the output voltage and the output current on the efficiency is more than 5%, and the influence of the temperature and the product consistency on the efficiency is less than 1%. Since the influence of the temperature and the product consistency on the efficiency is small, the influence of the temperature and the product consistency on the efficiency is not considered in the estimation of the efficiency in the embodiment.

[0072] Optionally, before the combination of the influence factor data groups of the target DCDC converter under different working conditions, the method further includes: selecting a preset number of samples in the same batch of DCDC converters; testing the efficiency of each sample under different working conditions, and selecting the efficiency median sample in all the samples as the target DCDC converter according to the test results.

[0073] For example, 20 samples can be selected in the same batch of DCDC converters. The actual efficiency test is performed on each sample under the test conditions that the normal temperature, the input voltage is set to the maximum design value, the output voltage is set to the rated value, and the output current is set to 5% load / 10% load / 15% load / 20% load / 50% load / 75% load / 100% load (i.e. the output current is set to 5%, 10%, …, 100% of the maximum output current). The median sample, the maximum sample and the minimum sample are found. Specifically, the efficiency of each sample under 5% load / 10% load / 15% load / 20% load / 50% load / 75% load / 100% load is obtained by testing, the average efficiency of each sample under different loads is determined, and then the efficiency median sample (i.e. the sample with the average efficiency as the middle value), the efficiency maximum sample (i.e. the sample with the maximum average efficiency) and the efficiency minimum sample (i.e. the sample with the minimum average efficiency) are determined by comparing the average efficiency.

[0074] In the optional embodiment, the data acquisition is performed by using the efficiency median piece to calibrate the table of preset corresponding relationship, which can reduce the influence of product consistency, improve the coverage of data, and further improve the calibration accuracy of preset corresponding relationship, and further improve the estimation accuracy of subsequent DCDC converter parameters.

[0075] Optionally, the power consumption estimation method further comprises: determining an efficiency extreme piece in all the sample pieces according to test results obtained by testing the efficiency of each sample piece under different working conditions; obtaining input voltage sampling values, output voltage sampling values, output current sampling values and input current actual values of the efficiency extreme piece under different working conditions; correcting the input voltage sampling values, the output voltage sampling values and the output current sampling values by using a fitting formula to obtain corrected input voltage sampling values, corrected output voltage sampling values and corrected output current sampling values; determining the duty cycle according to the corrected input voltage sampling values and the corrected output voltage sampling values, and determining the output efficiency in the preset corresponding relationship according to the duty cycle and the corrected output current sampling values; determining an input current estimation value according to the output efficiency, the corrected input voltage sampling values, the corrected output voltage sampling values and the corrected output current sampling values; comparing the input current estimation value with the input current actual value, and verifying the calculation accuracy of power consumption according to the comparison result.

[0076] Specifically, the efficiency extreme piece includes an efficiency maximum piece and an efficiency minimum piece. In order to verify the influence of temperature and product consistency on efficiency accuracy at the same time, the actual efficiency of the efficiency extreme piece under different temperatures can be used to verify the accuracy of the estimated efficiency.

[0077] Specifically, the input voltage sampling values, the output voltage sampling values, the output current sampling values of the efficiency extreme piece under different temperatures (such as high temperature, normal temperature and low temperature) collected by the sampling circuit, and the input current actual values measured by the power meter are obtained, the input current estimation value is obtained by processing the input voltage sampling values, the output voltage sampling values and the output current sampling values, and the calculation accuracy of power consumption is indirectly verified by comparing the input current estimation value with the input current actual value. For example, the absolute value of the difference between the input current estimation value and the input current actual value is determined, and the absolute value is compared with a preset accuracy threshold value. If the absolute value is less than the preset accuracy threshold value, it means that the calculation accuracy of power consumption is high. If the absolute value is greater than or equal to the preset accuracy threshold value, it means that the calculation accuracy of power consumption is low, and further analysis can be performed to determine whether the influence of product consistency or the problem in the value piece or data acquisition process in the calibration process.

[0078] In the optional embodiment, since the verification of the power consumption (i.e. the ampere-hour integral value) needs to accumulate current for a long time to realize the power consumption accuracy verification, in order to save verification time and increase verification working conditions, the accuracy of the estimated input current is verified indirectly to verify the calculation accuracy of the power consumption. The influence of temperature and other working conditions and product consistency on efficiency accuracy can be verified, and the data acquisition process and the preset corresponding relationship calibration process can be verified, which facilitates the timely discovery of problems when the power consumption calculation accuracy is poor, and then timely correction measures are taken to improve the efficiency of correction. The verification process can use the developed automatic acquisition tool for data acquisition.

[0079] Optionally, the determining the input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current comprises: determining a first product of the corrected output voltage and the corrected output current, and a second product of the corrected input voltage and the efficiency, dividing the first product by the second product to obtain the input current.

[0080] Specifically, the calculation formula is as follows: , wherein, the corrected output voltage is V; the corrected output current is A; the output power is W; the corrected input voltage is V; the input current is A; the input power is W; the DCDC working efficiency is %. In the formula, the input voltage, the output voltage and the output current are obtained by the existing sampling circuit and corrected, and the working efficiency of the DCDC is obtained by linear interpolation lookup table according to the preset corresponding relationship, and the input current can be calculated according to the formula.

[0081] Optionally, after the calculating the power consumption of the DCDC converter and the power consumption equipment connected to the output side of the DCDC converter according to the input current, the method further comprises: obtaining the SOC value of the high-voltage battery pack connected to the input side of the DCDC converter, subtracting the power consumption from the SOC value to obtain the corrected SOC value.

[0082] Specifically, since the SOC value of the high-voltage battery pack calculated by the BMS does not consider the consumption of the DCDC converter and the electrical equipment after the vehicle high-voltage system is powered off, the SOC value is deviated. The SOC value calculated by the BMS is subtracted from the estimated power consumption of the DCDC converter and the electrical equipment, and the SOC value is corrected, thereby improving the accuracy of the SOC value.

[0083] As shown in Figure 3 The power consumption estimation device 300 provided by the embodiment of the present application comprises: The acquisition module 310 is configured to acquire the input voltage, the output voltage and the output current of the DCDC converter; The query module 320 is configured to determine the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between a target parameter of the DCDC converter and the efficiency; The calculation module 330 is configured to determine the input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current, and calculate the power consumption of the DCDC converter and the electrical equipment connected to the output side of the DCDC converter according to the input current.

[0084] The power consumption estimation device 300 of the embodiment has the same advantages as the power consumption estimation method of the above embodiment compared with the prior art, and thus the details are not repeated here.

[0085] Optionally, the query module 320 is specifically configured to correct the input voltage, the output voltage and the output current respectively by using a fitting formula to obtain corrected input voltage, corrected output voltage and corrected output current, and determine the efficiency according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset corresponding relationship.

[0086] Optionally, the power consumption estimation device 300 further comprises a calibration module, and the calibration module is configured to acquire sampling values and actual values of each to-be-calibrated parameter under different working conditions, wherein the to-be-calibrated parameters are the input voltage, the output voltage and the output current respectively; and fit each group of the sampling values and the actual values of the to-be-calibrated parameters under different working conditions by a one-time curve fitting method to obtain the fitting formula corresponding to the to-be-calibrated parameter.

[0087] Optionally, the target parameter of the DCDC converter includes a duty cycle and an output current of the DCDC converter; and the querying module 320 is specifically configured to: determine the duty cycle of the DCDC converter according to the corrected input voltage and the corrected output voltage; and determine the efficiency in the preset corresponding relationship according to the duty cycle and the corrected output current.

[0088] Optionally, the calculating module 330 is configured to: determine an input current cumulative value at a current sampling time according to the input current at the current sampling time and an input current cumulative value at a previous sampling time; compare the input current cumulative value at the current sampling time with a cumulative value threshold; when the input current cumulative value at the current sampling time is greater than or equal to the cumulative value threshold, add one to the power consumption at the previous sampling time to obtain the power consumption of the DCDC converter and the power consumption device at the current time; and when the input current cumulative value at the current sampling time is less than the cumulative value threshold, determine a quotient of the input current cumulative value at the current sampling time and the cumulative value threshold, and add the quotient to the power consumption at the previous sampling time to obtain the power consumption of the DCDC converter and the power consumption device at the current time.

[0089] Optionally, the calibration module is further configured to: obtain a combination of influence factors of a target DCDC converter under different working conditions, wherein the combination of influence factors includes an input voltage, an output voltage, an output current and an efficiency of the target DCDC converter; for each output current, determine a duty cycle according to the input voltage and the output voltage corresponding to the output current, and fit the duty cycle and the efficiency to obtain a fitting formula corresponding to the output current; determine a plurality of different duty cycles, and for each duty cycle, determine the efficiency corresponding to the duty cycle according to the fitting formula corresponding to each output current; and establish the preset corresponding relationship according to the corresponding relationship among the duty cycle, the output current and the efficiency.

[0090] Optionally, the calculating module 330 is specifically configured to: determine a first product of the corrected output voltage and the corrected output current, and a second product of the corrected input voltage and the efficiency; and divide the first product by the second product to obtain the input current.

[0091] Optionally, the calculating module 330 is specifically further configured to: obtain an SOC value of a high-voltage battery pack connected to an input side of the DCDC converter; and subtract the power consumption from the SOC value to obtain a corrected SOC value.

[0092] As Figure 4As shown, the electronic device 400 provided by the embodiment of the present application comprises a memory 410 and a processor 420; the memory 410 is used for storing a computer program; the processor 420 is used for realizing the power consumption estimation method as described above when executing the computer program.

[0093] Alternatively, the electronic device 400 comprises a memory 410 and a processor 420 coupled to the memory 410; the memory 410 is configured to store a computer program; the processor 420 is configured to execute the following operations when executing the computer program: obtain an input voltage, an output voltage and an output current of a DCDC converter; determine an efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between a target parameter of the DCDC converter and the efficiency; determine an input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current; calculate a power consumption of the DCDC converter and a power consumption device connected to an output side of the DCDC converter according to the input current.

[0094] The computer readable storage medium provided by the embodiment of the present application has a computer program stored thereon, and when the computer program is executed by a processor, the power consumption estimation method as described above is realized.

[0095] Alternatively, a non-volatile computer readable storage medium has a computer program stored thereon, and when the computer program is executed by a processor, the processor executes the following operations: obtain an input voltage, an output voltage and an output current of a DCDC converter; determine an efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between a target parameter of the DCDC converter and the efficiency; determine an input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current; calculate a power consumption of the DCDC converter and a power consumption device connected to an output side of the DCDC converter according to the input current.

[0096] An electronic device 400, which can be a server or a client of the present application, will now be described, which is an example of a hardware device that can be applied to aspects of the present application. The electronic device 400 is intended to represent various forms of digital electronic computer devices such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device 400 can also represent various forms of mobile devices such as personal digital assistants, cellular telephones, smart phones, wearable devices, and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the present application described and / or claimed in this document.

[0097] The electronic device 400 includes a computing unit that can perform various appropriate actions and processes in accordance with a computer program stored in a read-only memory (ROM) or a computer program loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The computing unit, the ROM, and the RAM are connected to each other through a bus. An input / output (I / O) interface is also connected to the bus.

[0098] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware by a computer program, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiments. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM), or a random access memory (RAM), etc. In this application, the units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e., they can be located in one place or distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application. In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0099] Although the present application is disclosed as above, the protection scope of the present application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications will fall within the protection scope of the present application.

Claims

1. A power consumption estimation method, characterized by, The method comprises: obtaining an input voltage, an output voltage and an output current of a DCDC converter; determining an efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between a target parameter of the DCDC converter and the efficiency; determining an input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current; calculating a power consumption of the DCDC converter and a power consumption device connected to an output side of the DCDC converter according to the input current.

2. The power consumption estimation method according to claim 1, characterized by, The determining of the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and the preset corresponding relationship comprises: correcting the input voltage, the output voltage and the output current respectively by using a fitting formula to obtain a corrected input voltage, a corrected output voltage and a corrected output current; determining the efficiency according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset corresponding relationship.

3. The power consumption estimation method according to claim 2, characterized by, Before the correcting of the input voltage, the output voltage and the output current by using the fitting formula, the method further comprises: obtaining a sampling value and an actual value of each to-be-calibrated parameter under different working conditions, wherein the to-be-calibrated parameters are the input voltage, the output voltage and the output current respectively; fitting each set of the sampling value and the actual value of the to-be-calibrated parameter under different working conditions by using a one-time curve fitting method to obtain the fitting formula corresponding to the to-be-calibrated parameter.

4. The power consumption estimation method according to claim 2, characterized by, The target parameter of the DCDC converter comprises a duty ratio and an output current of the DCDC converter; and the determining of the efficiency according to the corrected input voltage, the corrected output voltage, the corrected output current and the preset corresponding relationship comprises: determining the duty ratio of the DCDC converter according to the corrected input voltage and the corrected output voltage; determining the efficiency in the preset corresponding relationship according to the duty ratio and the corrected output current.

5. The power consumption estimation method according to any one of claims 1 to 4, characterized by, The calculating of the power consumption of the DCDC converter and the power consumption device connected to the output side of the DCDC converter according to the input current comprises: determining an input current cumulative value at a current sampling time according to the input current at the current sampling time and an input current cumulative value at a previous sampling time; comparing the input current cumulative value at the current sampling time with a cumulative value threshold; when the input current cumulative value at the current sampling time is greater than or equal to the cumulative value threshold, adding one to a power consumption at the previous sampling time to obtain a power consumption of the DCDC converter and the power consumption device at the current time; when the input current cumulative value at the current sampling time is less than the cumulative value threshold, determining a quotient of the input current cumulative value at the current sampling time and the cumulative value threshold, and adding the quotient to the power consumption at the previous sampling time to obtain the power consumption of the DCDC converter and the power consumption device at the current time.

6. The power consumption estimation method according to any one of claims 1 to 4, characterized by, Before the determining the efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, the method further comprises: obtaining an influence factor data combination of a target DCDC converter under different working conditions, wherein the influence factor data combination comprises an input voltage, an output voltage, an output current and an efficiency of the target DCDC converter; for each of the output currents, determining a duty cycle according to the input voltage and the output voltage corresponding to the output current, and fitting the duty cycle with the efficiency to obtain a fitting formula corresponding to the output current; determining a plurality of different duty cycles, and for each of the duty cycles, determining the efficiency corresponding to the duty cycle according to the fitting formula corresponding to each of the output currents; establishing the preset corresponding relationship according to a corresponding relationship among the duty cycles, the output currents and the efficiency.

7. The power consumption estimation method according to any one of claims 2 to 4, characterized by, The determining the input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current comprises: determining a first product of the corrected output voltage and the corrected output current, and a second product of the corrected input voltage and the efficiency, dividing the first product by the second product to obtain the input current.

8. The power consumption estimation method according to any one of claims 1 to 4, characterized by, After the calculating the power consumption of the DCDC converter and a power consumption device connected to an output side of the DCDC converter according to the input current, the method further comprises: obtaining a SOC value of a high-voltage battery pack connected to an input side of the DCDC converter, and subtracting the power consumption from the SOC value to obtain a corrected SOC value.

9. A power consumption estimation device, characterized by comprising: comprises: a collection module configured to obtain an input voltage, an output voltage and an output current of a DCDC converter; a query module configured to determine an efficiency of the DCDC converter according to the input voltage, the output voltage, the output current and a preset corresponding relationship, wherein the preset corresponding relationship comprises a corresponding relationship between a target parameter of the DCDC converter and the efficiency; a calculation module configured to determine an input current of the DCDC converter according to the efficiency, the input voltage, the output voltage and the output current, and to calculate a power consumption of the DCDC converter and a power consumption device connected to an output side of the DCDC converter according to the input current.

10. An electronic device, comprising: comprises a memory and a processor; the memory is configured to store a computer program; the processor is configured to implement the power consumption estimation method according to any one of claims 1 to 8 when executing the computer program.

Images