CN117368750A

CN117368750A - Method and device for monitoring battery residual capacity information, electronic equipment and storage medium

Info

Publication number: CN117368750A
Application number: CN202210775631.5A
Authority: CN
Inventors: 王兴成
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2024-01-09

Abstract

The disclosure relates to a method and a device for monitoring battery remaining capacity information, an electronic device and a storage medium. The method for monitoring the battery residual capacity information applied to the electronic equipment comprises the following steps: when a battery of the electronic equipment is in a discharging mode with constant power, determining charge change information corresponding to the charge state of the battery; determining terminal voltage change information of the battery according to the charge change information; determining current variation information of the battery according to the constant power and the terminal voltage variation information; and determining the information of the residual electric quantity at the current moment of the battery according to the terminal voltage change information and the current change information.

Description

Method and device for monitoring battery residual capacity information, electronic equipment and storage medium

Technical Field

The disclosure relates to the field of battery technologies, and in particular, to a method and device for monitoring battery residual capacity information, an electronic device and a storage medium.

Background

With the development of electronic technology, the electronic device has more and more functions, and the electronic device can execute various functions and applications, and the power consumption of the battery under different functions and applications is different, so that the information of the remaining power of the battery is also different.

The current battery technology is relatively slow in development, the requirement of the smart phone equipment on the electric quantity is difficult to meet, and the residual electric quantity information obtained by the existing method for calculating the residual electric quantity information generally has the problem of inaccurate calculation of the battery residual electric quantity information due to the change of calculation parameters, so that the problems of poor intelligence of the electronic equipment and poor user experience occur.

Disclosure of Invention

The disclosure provides a method and a device for monitoring battery residual capacity information, electronic equipment and a storage medium.

A first aspect of the present disclosure provides a method for monitoring remaining battery power information, applied to an electronic device, the method comprising:

when a battery of the electronic equipment is in a discharging mode with constant power, determining charge change information corresponding to the charge state of the battery;

determining terminal voltage change information of the battery according to the charge change information;

determining current variation information of the battery according to the constant power and the terminal voltage variation information;

and determining the information of the residual electric quantity at the current moment of the battery according to the terminal voltage change information and the current change information.

Based on the above scheme, the determining the remaining power information of the battery at the current moment according to the terminal voltage variation information and the current variation information includes:

Calculating to obtain a first discharge power according to the voltage and the current acquired at the current moment;

determining a reference discharge power according to a difference between the first discharge power and the second discharge power and/or according to a difference between a remaining use time at the first discharge power and a remaining use time at the second discharge power; wherein the second discharge power is determined based on the discharge information of the previous history; the discharge information includes: the first discharge power, the second discharge power, the remaining use time under the first discharge power, and the remaining use time under the second discharge power;

and determining the information of the residual electric quantity at the current moment of the battery according to the reference discharge power, the terminal voltage change information and the current change information.

Based on the above scheme, the determining the reference discharge power according to the difference between the first discharge power and the second discharge power includes:

when the difference between the first discharge power and the second discharge power is larger than the first power threshold and smaller than the second power threshold, calculating to obtain the reference discharge power according to the second discharge power and a first compensation value; wherein the first compensation value is determined according to the first discharge power and the second discharge power.

Based on the above scheme, the method further comprises:

and when the difference between the first discharge power and the second discharge power is smaller than the first power threshold, determining the residual electric quantity information of the battery at the previous historical moment as the residual electric quantity information of the battery at the current moment.

Based on the above-mentioned scheme, the determining the reference discharge power according to the difference between the remaining usage time at the first discharge power and the remaining usage time at the second discharge power includes:

calculating to obtain a first residual service time according to the first discharge power;

calculating to obtain a second residual service time according to the second discharge power;

when the difference between the first residual using time and the second residual using time is larger than the first time threshold and smaller than a second time threshold, calculating to obtain the reference discharging power according to the second discharging power and a second compensation value; wherein the second compensation value is determined based on a first remaining usage time and the second remaining usage time.

Based on the above scheme, the method further comprises:

and when the difference between the first residual using time and the second residual using time is smaller than the first time threshold, determining the residual electric quantity information of the battery at the previous historical moment as the residual electric quantity information at the current moment of the battery.

Based on the above scheme, the determining the remaining power information of the battery at the current moment according to the reference discharge power, the terminal voltage variation information and the current variation information includes:

determining the residual energy of the battery at the current moment according to the terminal voltage change information and the current change information;

and determining the residual electric quantity information according to the residual energy and the reference discharge power.

Based on the above scheme, when the battery of the electronic device is in a discharge mode with constant power, determining charge change information corresponding to a charge state of the battery includes:

when the battery of the electronic equipment is in a constant power discharging mode, calculating the battery charge state at the current moment according to the residual energy of the battery at the current moment and the initial total energy of the battery;

and obtaining charge change information corresponding to the charge states of the batteries at all times according to the charge states of the batteries at the previous historical time and the charge states of the batteries at the current time.

Based on the above scheme, the determining terminal voltage change information of the battery according to the charge change information includes:

Inquiring the comparison relation between the battery state of charge and the open-circuit voltage according to the battery state of charge at each moment, and determining the corresponding open-circuit voltage at each moment;

inquiring the comparison relation between the battery state of charge and the battery internal resistance according to the battery state of charge at each moment, and determining the corresponding battery internal resistance at each moment;

determining terminal voltages corresponding to all the moments according to the corresponding open-circuit voltages at all the moments and the corresponding battery internal resistances at all the moments;

and obtaining terminal voltage change information of the battery according to the terminal voltages corresponding to the moments.

A second aspect of the present disclosure provides an apparatus for monitoring remaining battery power information, applied to an electronic device, the apparatus comprising:

the charge change determining module is used for determining charge change information corresponding to the charge state of the battery when the battery of the electronic equipment is in a discharge mode with constant power;

the terminal voltage determining module is used for determining terminal voltage change information of the battery according to the charge change information;

the current determining module is used for determining current change information of the battery according to the constant power and the terminal voltage change information;

And the first remaining capacity determining module is used for determining the remaining capacity information of the battery at the current moment according to the terminal voltage change information and the current change information.

Based on the above scheme, the device further comprises:

the first discharge power module is used for calculating and obtaining first discharge power according to the voltage and the current acquired at the current moment;

a reference discharge power module is determined, and is used for determining reference discharge power according to the difference between the first discharge power and the second discharge power and/or according to the difference between the residual use time under the first discharge power and the residual use time under the second discharge power; wherein the second discharge power is determined based on the discharge information of the previous history; the discharge information includes: the first discharge power, the second discharge power, the remaining use time under the first discharge power, and the remaining use time under the second discharge power;

and determining a first residual electric quantity sub-module, which is used for determining the residual electric quantity information of the battery at the current moment according to the reference discharge power, the terminal voltage change information and the current change information.

Based on the above scheme, the determining reference discharge power module is specifically configured to calculate the reference discharge power according to the second discharge power and a first compensation value when a difference between the first discharge power and the second discharge power is greater than the first power threshold and less than the second power threshold; wherein the first compensation value is determined according to the first discharge power and the second discharge power.

Based on the above scheme, the device further comprises:

and the second remaining capacity determining module is used for determining the remaining capacity information of the battery at the previous historical moment as the remaining capacity information of the battery at the current moment when the difference between the first discharging power and the second discharging power is smaller than the first power threshold value.

Based on the above scheme, the determining reference discharge power module is specifically configured to calculate a first remaining usage time according to the first discharge power; calculating to obtain a second residual service time according to the second discharge power; when the difference between the first residual using time and the second residual using time is larger than the first time threshold and smaller than a second time threshold, calculating to obtain the reference discharging power according to the second discharging power and a second compensation value; wherein the second compensation value is determined based on a first remaining usage time and the second remaining usage time.

Based on the above scheme, the device further comprises:

the second remaining power determining module is specifically further configured to determine remaining power information of the battery at a previous historical time as remaining power information of the battery at a current time when a difference between the first remaining use time and the second remaining use time is smaller than the first time threshold.

Based on the above scheme, the determining first remaining electric sub-module is specifically configured to determine remaining energy of the battery at the current moment according to the terminal voltage change information and the current change information; and determining the residual electric quantity information according to the residual energy and the reference discharge power.

Based on the above scheme, the charge change determining module is specifically configured to calculate, when the battery of the electronic device is in a discharge mode with constant power, a battery state of charge at a current time according to a remaining energy of the battery at the current time and an initial total energy of the battery; and obtaining charge change information corresponding to the charge states of the batteries at all times according to the charge states of the batteries at the previous historical time and the charge states of the batteries at the current time.

Based on the above scheme, the terminal voltage determining module is specifically configured to query a comparison relationship between the battery state of charge and the open-circuit voltage according to the battery state of charge at each moment, and determine a corresponding open-circuit voltage at each moment; inquiring the comparison relation between the battery state of charge and the battery internal resistance according to the battery state of charge at each moment, and determining the corresponding battery internal resistance at each moment; determining terminal voltages corresponding to all the moments according to the corresponding open-circuit voltages at all the moments and the corresponding battery internal resistances at all the moments; and obtaining terminal voltage change information of the battery according to the terminal voltages corresponding to the moments.

A third aspect of the present disclosure provides an electronic device, comprising:

a memory for storing processor-executable instructions;

a processor connected to the memory;

wherein the processor is configured to perform the method of monitoring battery remaining power information as provided in any of the above.

A fourth aspect of the present disclosure provides a non-transitory computer-readable storage medium, which when executed by a processor of a computer, enables the computer to perform the method of monitoring battery remaining power information as provided in any one of the above.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

when the battery of the electronic equipment is in a discharging mode with constant power, the charge change information corresponding to the charge state of the battery is determined, and the terminal voltage change information of the battery is determined according to the charge change information. Because the battery is in the constant power working mode, the current change information of the battery can be determined according to the constant power corresponding to the constant power discharging mode and the terminal voltage change information. And determining the information of the residual electric quantity at the current moment of the battery according to the terminal voltage change information of the battery and the current change information of the battery. Therefore, under the constant power discharging mode, when the terminal voltage changes, the current can change reversely, so that the accuracy of the calculated residual electric quantity information at the current moment is improved, errors caused by the fact that the residual electric quantity information is determined by the voltage change are avoided, and the intelligence of the electronic equipment and the experience of a user are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a flowchart illustrating a method of monitoring battery remaining power information according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating a battery discharge curve according to an exemplary embodiment;

FIG. 3 is a flow chart illustrating a method of monitoring battery remaining power information according to an exemplary embodiment;

FIG. 4 is a flow chart illustrating a method of monitoring battery remaining power information according to an exemplary embodiment;

FIG. 5 is a flow chart illustrating a method of monitoring battery remaining power information according to an exemplary embodiment;

fig. 6 is a flowchart illustrating a method of monitoring battery remaining power information according to an exemplary embodiment;

fig. 7 is a schematic diagram showing the structure of a verification information processing apparatus according to an exemplary embodiment;

fig. 8 is a schematic diagram of a structure of an electronic device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the disclosure as detailed in the accompanying claims.

As shown in fig. 1, the present disclosure provides a method for monitoring remaining battery power information, which is applied to an electronic device, and the method includes:

s110: when a battery of the electronic equipment is in a discharging mode with constant power, determining charge change information corresponding to the charge state of the battery;

s120: determining terminal voltage change information of the battery according to the charge change information;

s130: determining current variation information of the battery according to the constant power and the terminal voltage variation information;

s140: and determining the information of the residual electric quantity at the current moment of the battery according to the terminal voltage change information and the current change information.

The electronic devices herein may include various smart home devices, wearable devices, tablet computers, mobile terminals, cell phones, or smart office devices.

The constant power discharge mode refers to: the discharge power of the batteries at different times is the same or the difference value is within a preset range.

The time domain discretizes the time, and the discharge power of the battery changes little in a single small period of time, at which time the battery can be considered to operate in a constant power discharge mode.

Thus, the battery discharge power fluctuates greatly in a relatively long time dimension, but the discharge of the battery can be regarded as constant power discharge in a short time slice.

Illustratively, one discrete time period may be: 1s, 2s, 3s or 4s, etc.

Illustratively, at constant power discharge, the terminal voltage decreases and the current increases; or the terminal voltage increases and the current decreases. Typically, the terminal voltage is gradually reduced during discharge of the battery.

Illustratively, the remaining power information includes at least: a residual electrical quantity value and/or a residual time of use.

Illustratively, the battery includes at least: lithium ion batteries, and the like.

As can be appreciated, the charge change information of the battery is change condition information of the state of charge of the battery at various times. The state of charge of a battery is used to reflect the remaining energy of the battery, and it is understood that the value is the ratio of the remaining energy to the total energy of the battery, and is often expressed as a percentage. Illustratively, the state of charge of the battery is the battery SOC.

For example, the battery may be divided into a plurality of voltage segments, and the total energy of the battery is the sum of the energy of the respective voltage segments.

I.e., the discharge voltage of the battery is gradually decreased as the remaining capacity of the battery is decreased. The application of the same discharge voltage or similar discharge voltages may be divided into the same discrete time periods in the time domain according to the decrease in the discharge voltage of the battery.

It is understood that the terminal voltage variation information of the battery is determined according to the charge variation information of the battery. The terminal voltage of the battery can be calculated according to the charge state of the battery, wherein the terminal voltage is the difference between the open-circuit voltage of the battery and the internal resistance partial pressure of the battery.

Since the battery is in a constant power discharge mode, the current change is calculated from the constant power and terminal voltage. By calculating the current at each time, the current change information of the battery can be obtained.

It can be understood that, according to the terminal voltage variation information of the battery and the current variation information of the battery, the terminal voltage and the current at each moment can be obtained, and the product of the current and the terminal voltage in a period of time is calculated. Since there is a time interval between the two terminal voltages during the terminal voltage acquisition, the time interval needs to be considered when calculating the remaining power information.

Therefore, the power is not changed along with the change of the discharge voltage by controlling the constant power discharge of the battery, and the charge change information, the terminal voltage change condition information and the current change condition information corresponding to the charge state of the battery are predicted by the constant power, so that the residual electric quantity information can be calculated more accurately.

As shown in fig. 2, the discharge curve of the battery is represented by the abscissa representing the discharge capacity and the ordinate representing the discharge voltage. As the discharge capacity increases, the discharge voltage is continuously decreasing. When the discharge capacity is increased, the remaining capacity is decreased, and it is also understood that the discharge voltage of the battery is different at different remaining capacities.

In some embodiments, as shown in fig. 3, the S140 includes:

s141: calculating to obtain a first discharge power according to the voltage and the current acquired at the current moment;

s142: determining a reference discharge power according to the difference between the first discharge power and the second discharge power and the difference between the remaining use time at the first discharge power and the remaining use time at the second discharge power; wherein the second discharge power is determined based on the discharge information of the previous history; the discharge information includes: the first discharge power, the second discharge power, the remaining use time under the first discharge power, and the remaining use time under the second discharge power;

s143: and determining the information of the residual electric quantity at the current moment of the battery according to the reference discharge power, the terminal voltage change information and the current change information.

It will be appreciated that the first discharge power is the actual power calculated from the current of the currently harvested battery. The second discharge power is calculated from the discharge information at the previous history. For example, a ammeter is arranged in the electronic equipment, and the discharge current of the battery can be acquired in real time.

In order to avoid the phenomenon that the residual electric quantity information of the battery at the current moment and the residual electric quantity information of the previous historical moment suddenly change, the reference discharge power is determined by the difference between the first discharge power and the second discharge power and the difference between the residual use time under the first discharge power and the residual use time under the second discharge power. The remaining power information is finally determined by referring to the discharge power and terminal voltage variation information of the battery and current variation information of the battery. Therefore, the situation of jump of the information of the residual electric quantity is effectively avoided, and the experience of a user is improved.

The calculation formula of the second discharge power is as follows:

W _k+1 ＝W _k +a*(W _k -w _k )+b*(EtoT _k -etot _k )＃(1)

in the formula (1): w (W) _k+1 A second discharge power at time k+1, W _k A second discharge power at time k, w _k For the first discharge power at time k, etOT _k Etot is the remaining service time of the battery at the second discharge power at time k _k For the remaining use time of the battery at the first discharge power at the time k, k is the time point, a and b are weighting coefficients, a is-1, b is-w/s.

Illustratively, at an initial time k=0, W ₀ ＝w ₀ ，EtoT ₀ ＝etot ₀ Then W is ₁ ＝w ₀ 。

At time k=1, W ₁ ＝w ₀ ，w ₁ First discharge power, etoT, acquired in real time for time k=1 ₁ Second discharge power W for battery at k=1 ₁ Remaining use time, etot ₁ First discharge power w for battery at k=1 ₁ The remaining use time is calculated by the formula (1) to obtain a second discharge power W ₂ 。

Calculating the second discharge power may control how the second discharge power is compensated according to the weighting coefficients a and b.

Notably, are: the values of a and b may be determined based on statistical data at the time of discharge of a large number of batteries and/or laboratory experimental data.

In the embodiment of the present disclosure, when a+.0 and b+.0 in the formula (1), the second discharge power is determined together according to the weighting coefficients a and b. That is, the difference between the remaining usage time at the first discharge power and the remaining usage time at the second discharge power at the previous history time determines the second discharge power, and the difference between the first discharge power and the second discharge power at the previous history time determines the second discharge power, together determining the second discharge power.

It will be appreciated that EtOT in formula (1) _k And etot _k The calculation method comprises the following steps:

in the formula (1), etOT _k For the remaining service time of the battery at the second discharge power at time k, W _k For the second discharge power at time k, RE _k The residual energy of the battery at the moment k is the moment point;

in formula (2), etot _k For the remaining service time of the battery at the first discharge power at time k, w _k For the first discharge power at time k, RE _k The remaining energy of the battery at the time k is the time point.

It is understood that the remaining use time at the first discharge power is the first remaining use time. And calculating to obtain a first residual service time according to the first discharge power. The first remaining use time is calculated according to equation (3).

The remaining use time at the second discharge power is the second remaining use time. And calculating a second residual service life according to the second discharge power. And calculating according to the formula (2) to obtain a second residual using time.

In another embodiment, as shown in fig. 4, S140 may further include:

s144: calculating to obtain a first discharge power according to the voltage and the current acquired at the current moment;

s145: determining a reference discharge power according to the difference between the first discharge power and the second discharge power; wherein the second discharge power is determined based on the discharge information of the previous history; the discharge information includes: the first discharge power, the second discharge power, the remaining use time under the first discharge power, and the remaining use time under the second discharge power;

S146: and determining the information of the residual electric quantity at the current moment of the battery according to the reference discharge power, the terminal voltage change information and the current change information.

In the embodiment of the disclosure, when b=0 and a+.0 in the above formula (1), the second discharge power is determined according to the weighting coefficient a and the difference between the first discharge power and the second discharge power at the previous history.

In another embodiment, as shown in fig. 5, S140 may further include:

s147: calculating to obtain a first discharge power according to the voltage and the current acquired at the current moment;

s148: determining a reference discharge power according to a difference between the remaining use time at the first discharge power and the remaining use time at the second discharge power; wherein the second discharge power is determined based on the discharge information of the previous history; the discharge information includes: the first discharge power, the second discharge power, the remaining use time under the first discharge power, and the remaining use time under the second discharge power;

s149: and determining the information of the residual electric quantity at the current moment of the battery according to the reference discharge power, the terminal voltage change information and the current change information.

In the embodiment of the disclosure, a=0 and b+.0 in the above formula (1), the second discharge power is determined according to the weighting coefficient b and the difference between the remaining usage time at the first discharge power and the remaining usage time at the second discharge power at the previous history.

In some embodiments, the determining the reference discharge power according to the difference between the first discharge power and the second discharge power includes:

It will be appreciated that the first discharge power is the actual power calculated from the voltage and current of the currently harvested battery. The second discharge power is calculated from the discharge information at the previous history. For example, when the first discharge power is suddenly excessively high while the user uses the electronic device, a difference between the first discharge power and the second discharge power may be excessively large, and when the second power threshold has been exceeded, the remaining power information may not be adjusted by referring to the discharge power. An algorithmic fault alert is required at this point.

When the difference between the first discharge power and the second discharge power is between the first power threshold and the second power threshold, the reference discharge power may be determined according to the second discharge power and the first compensation value. Therefore, the residual electric quantity information is determined through the determined reference discharge power, the terminal voltage change information of the battery and the current change information of the battery, and the accuracy of the calculation of the residual electric quantity information is improved.

As can be appreciated, the first compensation value is calculated by: the difference between the first discharge power and the second discharge power is multiplied by a weighting coefficient a. May also be expressed as a (W _k -w _k )。

Specifically, the reference discharge power is the result W calculated according to equation (1) _k+1 . And can be expressed as the sum of the second discharge power at the current time and the first compensation value.

In some embodiments, the method further comprises:

In an exemplary embodiment, when the electronic device is in the standby state, the first discharge power is smaller, and the difference between the first discharge power and the second discharge power is smaller than the first power threshold, it may be understood that the remaining capacity information of the battery is unchanged at this time, and the remaining capacity information of the battery at the previous historical time may be used as the remaining capacity information at the current time of the battery.

And continuously monitoring the first discharge power of the battery, and determining the difference between the first discharge power and the second discharge power, thereby determining the residual capacity information.

In some embodiments, the determining the reference discharge power according to a difference between the remaining usage time at the first discharge power and the remaining usage time at the second discharge power includes:

It will be appreciated that the first discharge power is the actual power calculated from the voltage and current of the currently harvested battery. The second discharge power is calculated from the discharge information at the previous history.

A first remaining use time is calculated from the first discharge power, i.e. the result etot calculated from equation (3) _k For a first remaining use time. Calculating a second remaining use time according to the second discharge power, namely, calculating the result EtOT according to the formula (2) _k For a second remaining use time.

And calculating a difference value between the first residual using time and the second residual using time, and calculating the reference discharge power according to the second discharge power and the second compensation value when the difference value is between the first time threshold value and the second time threshold value. Therefore, the residual capacity information is determined according to the determined reference discharge power, the terminal voltage change information of the battery and the current change information of the battery, and the accuracy of the calculation of the residual capacity information is improved.

As can be appreciated, the second compensation value is calculated by: the difference between the first remaining usage time and the second remaining usage time is multiplied by the weighting coefficient b. May also be expressed as b (EtoT) _k -etot _k )。

Specifically, the reference discharge power is the result W calculated according to equation (1) _k+1 . And can be expressed as the sum of the second discharge power at the current time and the second compensation value.

In some embodiments, the method further comprises:

In an exemplary embodiment, when the electronic device is in the standby state, the first discharge power is smaller, so that a difference between a first remaining usage time calculated by the first discharge power and a second remaining usage time calculated by the second discharge power is smaller than a first time threshold, at this time, it may be understood that the remaining power information is unchanged, and the remaining power information of the battery at the previous historical time may be used as the remaining power information at the current time of the battery.

And continuously monitoring the first discharge power of the battery, and determining the difference between the first residual using time under the first discharge power and the second residual using time under the second discharge power, so as to determine the residual electric quantity information of the battery at the current moment.

In some embodiments, the determining remaining power information of the battery at the current time according to the reference discharge power, the terminal voltage variation information, and the current variation information includes:

Illustratively, the battery terminal voltage is divided into N segments, each segment having M discrete voltage points, and the discrete voltage points M of each of the N segments may be different or the same.

It can be understood that, according to the terminal voltage change information of the battery and the current change information of the battery, the remaining energy of the battery at the current moment is determined, and the following calculation mode is adopted:

wherein: RE (RE) _k U is the residual energy of the battery at the moment k _k For the terminal voltage of the battery at time k, I _k The working current of the battery at the moment k is T, the sampling moment interval is T, M is the number of voltage segments, N is the number of voltages of each voltage segment, and k is the moment point.

Obtaining u according to terminal voltage change information of battery _k Obtaining I according to the current change information of the battery _k The sampling time interval T is fixed, and the remaining energy of the battery at the current time is calculated according to the above formula (4).

It is understood that the remaining power information is determined according to the remaining energy and the reference discharge power.

The result calculated according to the formula (1) is the reference discharge power, and the result calculated according to the formula (2) is the residual capacity information.

In some embodiments, the S110 includes:

It will be appreciated that the state of charge of the battery at the present time is the ratio of the remaining energy to the initial total energy of the battery.

The state of charge of the battery at the current time can be also subtracted by the energy W consumed by the battery at the k time according to the known SOC at the previous historical time _k * And obtaining the current time SOC by the ratio of T to the total energy of the battery. The calculation formula is as follows:

in the formulas (5) and (6): SOC (State of Charge) _k SOC for battery state of charge at time k _k-1 Is the state of charge of the battery at the previous historical moment, W _k For the calculated power value at the time of the battery k, T is the sampling time interval, i is the number of voltage segments, i=1, 2 _i N is the voltage quantity of each voltage segment, U _k For the terminal voltage of the battery at time k, I _k The operating current of the battery is represented by k, which is the point in time.

And obtaining the charge change information of the battery at each moment according to the charge state of the battery at the previous historical moment and the charge state of the battery at the current moment.

In some embodiments, the S120 includes:

It will be appreciated that the state of charge of the battery and the open circuit voltage have a relationship, and that the state of charge of the battery and the internal resistance of the battery also have a relationship, both relationships being in the electronic device.

And obtaining the corresponding open-circuit voltage and the corresponding internal resistance of the battery at each moment according to the charge state of the battery at each moment. According to the obtained battery internal resistance, calculating to obtain battery internal resistance partial pressure, and according to the difference value of the open-circuit voltage and the battery internal resistance partial pressure at each moment, determining terminal voltage at each moment.

The calculation formula is as follows:

wherein: u (u) _ocv Is the electromotive force of the battery at the moment k, namely the open circuit voltage, R is the internal resistance of the battery at the moment k _k For calculating the power value at time k of battery, U _k U is the terminal voltage of the battery at the moment k _k-1 Is the terminal voltage of the battery at time k-1.

And obtaining terminal voltage change information of the battery according to the terminal voltage at each moment.

In some embodiments, the method comprises:

the voltage is divided into N segments and the voltage simulation is discretized. And predicting the average power of each time period, and obtaining voltage simulation curves of the lithium ion battery by the voltage simulation formulas (5) and (7). The voltage simulation curve corresponds to the terminal voltage change information.

And (3) obtaining the average power value of each segment discrete point interval through the formula (1).

Wherein: u (U) _k For the terminal voltage of the battery at time k, I _k For the operating current of the battery at time k, i is the number of voltage segments, i=0, 1,2.M is divided into M sections, N is the voltage quantity of each voltage section, and P _i Is the average power of each voltage segment.

Wherein: w (W) _k For the second discharge power of the battery, U _k For the terminal voltage of the battery at time k, I _k Is the operating current of the battery.

As can be appreciated, the power P of the battery at different segments _i May be the same or different.

The embodiment of the disclosure provides a method for monitoring remaining battery power information, which comprises the following steps:

calculated power W in the method _k The second discharge power is the second discharge power; the voltage simulation curve is the terminal voltage change information; w appearing below _k The first discharge power is as described above; w (W) _k+1 Is the reference discharge power; the simulation of the state of charge (SOC) of the lithium ion battery in the method is the battery charge change information.

Dividing the voltage into N sections, discretizing the voltage simulation, predicting the average power of each section of time section, and obtaining the voltage simulation curves of the lithium ion battery by the voltage simulation formulas (12) and (14). The average power value for each segment discrete point interval is obtained by equation 10.

Wherein: u (U) _k Is the terminal voltage of the battery; i _k Is the operating current of the battery; i is the number of voltage segments and, i=0, 1,2. The number of the sequences M, dividing the mixture into M sections; n is the number of voltages of each voltage segment; p (P) _i Is the average power of each voltage segment.

Wherein: w (W) _k Meter for batteryCalculating power;

the voltage simulation curve, as shown in equation 12, obtains the energy in the discrete time period by the product of the volume integral and the voltage average value in each discrete time period. And the sum of the energy of each voltage segment is the total energy of the battery, and the current discharging power of the lithium ion battery is combined to simulate the state of charge (SOC) of the lithium ion battery.

Wherein: SOC (State of Charge) _k The state of charge at the current moment of the battery; SOC (State of Charge) _k-1 The state of charge at the previous historical moment of the battery; w (W) _k Calculating a power value for the current moment of the battery; t is the sampling time interval; i is the number of voltage segments and, i=1, 2. The number of the sequences M, dividing the mixture into M sections; q (Q) _i Integrating capacity for each voltage segment; n is the number of voltages for each voltage segment.

After the simulation result of the SOC variation is obtained, the simulation result of the terminal voltage is obtained by equation 14.

Wherein: u (U) _ocv Is the electromotive force of the battery at a certain SOC; r is the internal resistance of the battery at a certain SOC.

As described above, the discrete voltage and SOC simulation change law are obtained.

The residual energy is obtained, because the equipment works in a constant power mode in the discharging process, the current change rule is required to be obtained according to the voltage change rule, and I is obtained and updated through the formula 11 _k The remaining energy is then obtained by equation 15.

Wherein: RE (RE) _k The residual energy of the battery at the current time;

correction of power consumption, which is divided into calculation of power consumption W _k And the actual acquisition power consumption w _k The calculated power consumption is corrected by comparing the two powers and their corresponding discharge times, as shown in equation 18. The corrected judgment logic is shown in FIG. 6, and the estimated power in FIG. 6 corresponds to the calculated power consumption W _k The actual power corresponds to the actual acquisition power consumption w _k 。

Wherein: etoT (EtoT) _k Calculating the power remaining use time for the current time of the battery; etot (et ot) _k The residual service time of the power passing through the battery at the current time is acquired; w (w) _k Power is harvested for the battery.

W _k+1 ＝W _k +a*(W _k -w _k )+b*(EtoT _k -etot _k )＃(18)

Wherein: a. b is a weighting coefficient, a units-1, b units-w/s. At initial time, k=0, w ₀ ＝w ₀ 。

As shown in fig. 7, an embodiment of the present disclosure provides an apparatus for monitoring remaining battery power information, which is applied to an electronic device, and includes:

a charge change determining module 410, configured to determine charge change information corresponding to a state of charge of a battery of the electronic device when the battery is in a discharge mode with constant power;

a terminal voltage determining module 420, configured to determine terminal voltage change information of the battery according to the charge change information;

a current determining module 430 for determining current variation information of the battery according to the constant power and the terminal voltage variation information;

the first remaining power determining module 440 is configured to determine remaining power information of the battery at the current moment according to the terminal voltage variation information and the current variation information.

In some embodiments, the apparatus further comprises:

In some embodiments, the determining the reference discharge power module is specifically configured to calculate the reference discharge power according to the second discharge power and a first compensation value when a difference between the first discharge power and the second discharge power is greater than the first power threshold and less than a second power threshold; wherein the first compensation value is determined according to the first discharge power and the second discharge power.

In some embodiments, the apparatus further comprises:

In some embodiments, the determining a reference discharge power module is specifically configured to calculate a first remaining usage time according to the first discharge power; calculating to obtain a second residual service time according to the second discharge power; when the difference between the first residual using time and the second residual using time is larger than the first time threshold and smaller than a second time threshold, calculating to obtain the reference discharging power according to the second discharging power and a second compensation value; wherein the second compensation value is determined based on a first remaining usage time and the second remaining usage time.

In some embodiments, the apparatus further comprises:

In some embodiments, the determining a first remaining electric power sub-module is specifically configured to determine remaining energy of the battery at a current time according to the terminal voltage change information and the current change information; and determining the residual electric quantity information according to the residual energy and the reference discharge power.

In some embodiments, the charge change determining module is specifically configured to calculate, when the battery of the electronic device is in a discharge mode with constant power, a state of charge of the battery at a current time according to a remaining energy of the battery at the current time and an initial total energy of the battery; and obtaining charge change information corresponding to the charge states of the batteries at all times according to the charge states of the batteries at the previous historical time and the charge states of the batteries at the current time.

In some embodiments, the terminal voltage determining module is specifically configured to query a comparison relationship between the battery state of charge and an open-circuit voltage according to the battery state of charge at each time, and determine a corresponding open-circuit voltage at each time; inquiring the comparison relation between the battery state of charge and the battery internal resistance according to the battery state of charge at each moment, and determining the corresponding battery internal resistance at each moment; determining terminal voltages corresponding to all the moments according to the corresponding open-circuit voltages at all the moments and the corresponding battery internal resistances at all the moments; and obtaining terminal voltage change information of the battery according to the terminal voltages corresponding to the moments.

An embodiment of the present disclosure provides an electronic device, including:

a memory for storing processor-executable instructions;

a processor connected to the memory;

The processor may include various types of storage medium, which are non-transitory computer storage media, capable of continuing to memorize information stored thereon after the electronic device is powered down.

The processor may be coupled to the memory via a bus or the like for reading an executable program stored on the memory, for example, capable of performing at least one of the methods shown in any of fig. 1, 3, 4, 5 and 6.

Fig. 8 is a block diagram of an electronic device 800, according to an example embodiment. For example, the electronic device 800 may be included in an electronic device such as a mobile phone, a mobile computer, or a server, and in any case, the data processing electronic device 800 may be included in any electronic device.

Referring to fig. 8, the electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the electronic device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the electronic device 800. Power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for electronic device 800.

The multimedia component 808 includes a screen between the electronic device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operational state, such as a photographing state or a video state. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 800 is in an operational state, such as a call state, a recording state, and a speech recognition state. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the electronic device 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the components, such as a display and keypad of the electronic device 800, the sensor assembly 814 may also detect a change in position of the electronic device 800 or a component of the electronic device 800, the presence or absence of a user's contact with the electronic device 800, an orientation or acceleration/deceleration of the electronic device 800, and a change in temperature of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the electronic device 800 and other devices, either wired or wireless. The electronic device 800 may access a wireless network based on a communication standard, such as Wi-Fi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of apparatus 800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Embodiments of the present disclosure provide a non-transitory computer readable storage medium, which when executed by a processor of a UE, enables the UE or a base station to perform the method for monitoring battery remaining power information provided in any of the foregoing embodiments, and to perform at least one of the methods shown in any of fig. 1, 2, 3, 4, 5, and 6.

The method for monitoring the remaining battery power information applied to the electronic equipment can comprise the following steps: when a battery of the electronic equipment is in a discharging mode with constant power, determining charge change information corresponding to the charge state of the battery; determining terminal voltage change information of the battery according to the charge change information; determining current variation information of the battery according to the constant power and the terminal voltage variation information; and determining the information of the residual electric quantity at the current moment of the battery according to the terminal voltage change information and the current change information.

It may be understood that the determining the remaining power information of the battery at the current time according to the terminal voltage variation information and the current variation information includes:

It is understood that the determining the reference discharge power according to the difference between the first discharge power and the second discharge power includes:

It will be appreciated that the method further comprises:

As can be appreciated, the determining the reference discharge power according to the difference between the remaining usage time at the first discharge power and the remaining usage time at the second discharge power includes:

It will be appreciated that the method further comprises:

As can be appreciated, the determining remaining power information of the battery at the current time according to the reference discharge power, the terminal voltage variation information and the current variation information includes:

It may be appreciated that, when the battery of the electronic device is in a discharge mode with constant power, determining charge change information corresponding to a state of charge of the battery includes:

It is understood that the determining terminal voltage variation information of the battery according to the charge variation information includes:

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for monitoring remaining battery power information, applied to an electronic device, comprising:

2. The method according to claim 1, wherein the determining remaining power information of the battery at the current time based on the terminal voltage variation information and the current variation information includes:

3. The method of claim 2, wherein determining a reference discharge power based on the difference between the first and second discharge powers comprises:

4. A method according to claim 3, characterized in that the method further comprises:

5. The method of claim 2, wherein the determining the reference discharge power based on the difference between the remaining usage time at the first discharge power and the remaining usage time at the second discharge power comprises:

6. The method of claim 5, wherein the method further comprises:

7. The method according to claim 2, wherein the determining remaining power information of the current time of the battery according to the reference discharge power, the terminal voltage variation information, and the current variation information includes:

8. The method of claim 1, wherein determining charge change information corresponding to a state of charge of a battery of the electronic device while the battery is in a constant power discharge mode comprises:

9. The method of claim 1, wherein determining terminal voltage change information of the battery from the charge change information comprises:

10. An apparatus for monitoring information of remaining battery power, applied to an electronic device, the apparatus comprising:

11. The apparatus of claim 10, wherein the apparatus further comprises:

12. The apparatus of claim 11, wherein the means for determining a reference discharge power is configured to calculate the reference discharge power based on the second discharge power and a first compensation value when a difference between the first discharge power and the second discharge power is greater than the first power threshold and less than a second power threshold; wherein the first compensation value is determined according to the first discharge power and the second discharge power.

13. The apparatus of claim 12, wherein the apparatus further comprises:

14. The apparatus of claim 11, wherein the means for determining the reference discharge power is specifically configured to calculate a first remaining usage time based on the first discharge power; calculating to obtain a second residual service time according to the second discharge power; when the difference between the first residual using time and the second residual using time is larger than the first time threshold and smaller than a second time threshold, calculating to obtain the reference discharging power according to the second discharging power and a second compensation value; wherein the second compensation value is determined based on a first remaining usage time and the second remaining usage time.

15. The apparatus of claim 14, wherein the apparatus further comprises:

16. The apparatus according to claim 11, wherein the determining first remaining electric power sub-module is specifically configured to determine remaining energy of the battery at a current time according to the terminal voltage variation information and the current variation information; and determining the residual electric quantity information according to the residual energy and the reference discharge power.

17. The apparatus according to claim 10, wherein the charge change determining module is specifically configured to calculate, when the battery of the electronic device is in a discharge mode with constant power, a battery state of charge at a current time according to a remaining energy of the battery at the current time and an initial total energy of the battery; and obtaining charge change information corresponding to the charge states of the batteries at all times according to the charge states of the batteries at the previous historical time and the charge states of the batteries at the current time.

18. The device according to claim 10, wherein the terminal voltage determining module is specifically configured to query a comparison relationship between the battery state of charge and the open circuit voltage according to the battery state of charge at each time, and determine a corresponding open circuit voltage at each time; inquiring the comparison relation between the battery state of charge and the battery internal resistance according to the battery state of charge at each moment, and determining the corresponding battery internal resistance at each moment; determining terminal voltages corresponding to all the moments according to the corresponding open-circuit voltages at all the moments and the corresponding battery internal resistances at all the moments; and obtaining terminal voltage change information of the battery according to the terminal voltages corresponding to the moments.

19. An electronic device, comprising:

a memory for storing processor-executable instructions;

a processor connected to the memory;

wherein the processor is configured to perform the method of monitoring battery remaining power information as provided in any one of claims 1 to 9.

20. A non-transitory computer readable storage medium, which when executed by a processor of a computer, causes the computer to perform the method of monitoring battery remaining power information as provided in any one of claims 1 to 9.