CN108874107B - Control method and device for state of charge - Google Patents
Control method and device for state of charge Download PDFInfo
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- CN108874107B CN108874107B CN201810556372.0A CN201810556372A CN108874107B CN 108874107 B CN108874107 B CN 108874107B CN 201810556372 A CN201810556372 A CN 201810556372A CN 108874107 B CN108874107 B CN 108874107B
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Abstract
The disclosure relates to a method and a device for controlling a state of charge. The method comprises the following steps: when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; when the first charge state is larger than the preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value; and in the first time, controlling the charge state to be reduced from the first charge state to a second charge state corresponding to a pre-shutdown voltage value, wherein the pre-shutdown voltage value is greater than the shutdown voltage value. By the method, the mobile terminal can accurately show the residual electric quantity of the battery to a user, so that the occurrence of the jump of the charge state and the abnormal condition of sudden shutdown of the charge state similar to 20% is avoided, and the user experience is effectively improved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling a state of charge.
Background
Modern mobile terminals, such as mobile phones, notebook computers, tablet computers, etc., are powered by batteries for portability. In order to avoid the embarrassment that the mobile terminal is automatically turned off due to the fact that the electric quantity of the battery is exhausted in the process that a user uses the mobile terminal, the current electric quantity of the battery is generally prompted to the user through a fuel gauge by the current mobile terminal, and therefore the user can charge the mobile terminal in time when the electric quantity of the battery is about to be exhausted.
Disclosure of Invention
To overcome the problems in the related art, embodiments of the present disclosure provide a method and an apparatus for controlling a state of charge. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a method for controlling a state of charge, including:
when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
when the first charge state is larger than a preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value;
and controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; when the first charge state is larger than the preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value; and in the first time, controlling the charge state to be reduced from the first charge state to a second charge state corresponding to a pre-shutdown voltage value, wherein the pre-shutdown voltage value is greater than the shutdown voltage value. When the first charge state is larger than the preset charge state, the abnormal condition that the charge state jumps possibly occurs or the abnormal condition that the battery is suddenly shut down when the charge state is 20% occurs, at this time, the value of the first time required for reducing the voltage value of the battery from the acquired real-time voltage value to the voltage value of the battery is calculated, and the charge state is controlled to be reduced from the first charge state to the second charge state corresponding to the voltage value of the battery in the first time, at this time, the mobile terminal can accurately show the residual electric quantity of the battery to a user, the jump of the charge state and the abnormal condition that the battery is suddenly shut down similarly to 20% of the electric quantity are avoided, and the user experience is effectively improved.
In one embodiment, the controlling the state of charge from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time includes:
determining a first state of charge reduction value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value;
and controlling the state of charge to be reduced from the first state of charge to the second state of charge within the first time according to the first state of charge reduction value corresponding to each first preset time period.
In one embodiment, the determining a first state of charge degradation value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value includes:
calculating a difference between the second state of charge and the first state of charge;
and acquiring a first charge state drop value corresponding to each first preset time period in the first time according to the difference.
In one embodiment, the first state of charge decrease values corresponding to each of the first preset time periods are the same.
In one embodiment, after the control state of charge is decreased from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value, the method further comprises:
acquiring the current voltage value of the battery;
calculating a value of a second time required for the voltage value of the battery to be reduced from the current voltage value to the shutdown voltage value;
determining a second charge state reduction value corresponding to each second preset time period in the second time according to the second charge state, a third charge state corresponding to the shutdown voltage value and the second time value;
and controlling the state of charge to be reduced from the second state of charge to the third state of charge within the second time according to a second state of charge reduction value corresponding to each second preset time period.
According to a second aspect of the embodiments of the present disclosure, there is provided a state of charge control apparatus including:
the first acquisition module is used for acquiring a first charge state corresponding to a real-time voltage value when a difference value between the real-time voltage value and a pre-shutdown voltage value of the battery is monitored to meet a preset voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
the first calculation module is used for calculating a value of the first time required for reducing the voltage value of the battery from the real-time voltage value to the pre-shutdown voltage value when the first charge state acquired by the first acquisition module is greater than a preset charge state;
and the first control module is used for controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value within the first time calculated by the first calculation module.
In one embodiment, the first control module comprises: a determination submodule and a control submodule;
the determining submodule is used for determining a first charge state reduction value corresponding to each first preset time period in the first time according to the first charge state, the second charge state and the value of the first time calculated by the first calculating module;
the control submodule is configured to control the state of charge to decrease from the first state of charge to the second state of charge within the first time according to the first state of charge decrease value corresponding to each first preset time period determined by the determination submodule.
In one embodiment, the determining sub-module includes: a calculation submodule and an acquisition submodule;
the calculation submodule is used for calculating a difference value between the second state of charge and the first state of charge acquired by the first acquisition module;
the obtaining submodule is used for obtaining a first state of charge reduction value corresponding to each first preset time period in the first time according to the difference value calculated by the calculating submodule.
In one embodiment, the first state of charge decrease values corresponding to each of the first preset time periods are the same.
In one embodiment, the apparatus further comprises a second obtaining module, a second calculating module, a determining module and a second controlling module;
the second obtaining module is used for obtaining the current voltage value of the battery after the first control module controls the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value;
the second calculating module is configured to calculate a value of a second time required for the voltage value of the battery to decrease from the current voltage value acquired by the second acquiring module to the shutdown voltage value;
the determining module is configured to determine a second state of charge drop value corresponding to each second preset time period within the second time according to the second state of charge, a third state of charge corresponding to the shutdown voltage value, and the second time value calculated by the second calculating module;
the second control module is configured to control the state of charge to decrease from the second state of charge to the third state of charge within the second time according to the second state of charge decrease value corresponding to each second preset time period determined by the determination module.
According to a third aspect of the embodiments of the present disclosure, there is provided a state of charge control apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
when the first charge state is larger than a preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value;
and controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method of any one of the first aspects.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart illustrating a method of controlling state of charge according to an exemplary embodiment.
FIG. 2 is a flow chart illustrating a method of controlling state of charge according to an exemplary embodiment.
FIG. 3 is a block diagram illustrating a state of charge control arrangement according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a first control module 13 of a state of charge control apparatus according to an exemplary embodiment.
Fig. 5 is a block diagram of the determination submodule 131 in the state of charge control device according to an exemplary embodiment.
FIG. 6 is a block diagram illustrating a state of charge control arrangement according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a control apparatus 80 for state of charge in accordance with an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The mobile terminal may have a fuel gauge to indicate the current remaining power through the charge state, and the charge state display inaccuracy may bring about poor user experience, for example, when a user uses the mobile terminal, the mobile terminal is suddenly turned off when the charge state is 20% (that is, the remaining power is 20%), or the charge state suddenly jumps from 20% to 5%.
Currently, electricity meters used in mobile terminals can be classified into the following 3 types, that is, coulometers based on current detection, voltage-type electricity meters, and voltage-current-type (mainly current and secondarily voltage) electricity meters. The coulomb meter based on current detection has integral accumulation error because of no detection voltage; the electricity quantity of the battery is estimated by acquiring voltage based on the voltage type electricity meter, and a large error also exists; compared with the former two types, the voltage-current type (mainly current and auxiliary voltage) electricity meter has greatly improved and optimized performance.
However, since the load of the mobile terminal is dynamically changed and the usage environment is various, and the available capacity of the battery cell changes with the load, the temperature and the aging degree, it is difficult for the fuel gauge algorithm to track the changes to achieve a good performance. For example: under the conditions of high and low temperature alternation and variable load, the three fuel gauge algorithms are difficult to obtain good user experience, for example, in the process of using the mobile terminal, the jump of the charge state and the abnormal condition like the sudden shutdown of the mobile terminal when the charge state is 20% can occur.
In order to solve the above technical problem, the present disclosure provides a method for controlling a state of charge, as shown in fig. 1, the method includes the following steps S101 to S103:
in step S101, when it is monitored that a difference between a real-time voltage value of the battery and a pre-shutdown voltage value satisfies a preset voltage value, a first State of Charge (SOC) corresponding to the real-time voltage value is obtained; and the pre-shutdown voltage value is greater than the shutdown voltage value.
The first state of charge corresponding to the obtained real-time voltage value can be obtained according to the current electric quantity calculation method: the fuel gauge collects the battery current, the battery voltage and the battery temperature in real time, estimates the Equivalent Series Resistance (ESR) of the battery, and then estimates and calculates the first state of charge based on the battery current, the battery voltage, the battery temperature and the ESR in real time.
The step of meeting the preset voltage value by the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery comprises the following steps: the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is a preset voltage value; or the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is slightly larger than the preset voltage value.
In step S102, when the first state of charge is greater than the preset state of charge, a value of a first time required for the voltage value of the battery to decrease from the real-time voltage value to the preset shutdown voltage value is calculated.
The preset state of charge is a critical SOC in which a state of charge of the mobile terminal is likely to jump under a severe condition (for example, under the condition of high and low temperature alternation or variable load) or a corresponding SOC when the mobile terminal is suddenly turned off, for example: 20 percent.
In step S103, in the first time, the state of charge is controlled to decrease from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value.
At present, the shutdown voltage of a mobile terminal (e.g., a mobile phone) is set to 3.4V, that is, the State of Charge (SOC) corresponding to 3.4V is 0%, in order to detect whether a potential problem that the mobile terminal is suddenly shutdown or the State of Charge jumps due to the SOC not reaching 0% corresponding to the shutdown voltage 3.4V under a severe condition before the battery voltage reaches the shutdown voltage, a pre-shutdown voltage V1 larger than the shutdown voltage is set in the mobile terminal, for example: when the difference between the real-time voltage value and the pre-shutdown voltage value of the battery meets the preset voltage value, the first state of charge corresponding to the real-time voltage value is obtained.
When the difference between the real-time voltage value and the pre-shutdown voltage value of the battery meets the preset voltage value (which can also be understood as that when the real-time voltage value of the battery is close to the pre-shutdown voltage value), the first state of charge should be smaller than the preset state of charge, and if the first state of charge is larger than the preset state of charge, the surface state of charge is calculated incorrectly, that is, an abnormal condition that the state of charge jumps (for example, 30% suddenly jumps to 20%) occurs, or an abnormal condition that the state of charge is larger than 0% (for example, the state of charge is 20%) occurs.
Therefore, after the first state of charge is obtained, the first state of charge is compared with a preset state of charge, and if the first state of charge is smaller than the preset state of charge at the moment, the abnormal condition of the state of charge does not occur, and at the moment, a calculation method of the fuel gauge in the related technology is adopted for calculation.
If the first state of charge is larger than the preset state of charge at the moment, the abnormal condition that the state of charge possibly occurs is shown, at the moment, the value of the voltage value of the battery is calculated to be reduced to the value of the first time required by the voltage value of the pre-shutdown machine from the acquired real-time voltage value, and the state of charge is controlled to be reduced to the second state of charge corresponding to the voltage value of the pre-shutdown machine from the first state of charge within the first time, at the moment, the mobile terminal can accurately show the residual electric quantity of the battery to a user, the jump of the state of charge and the abnormal condition that the electric quantity is suddenly shut down similarly to 20% are avoided, and the user experience is effectively.
For example, the first time is 5 minutes, the first state of charge is 25%, the preset state of charge is 20%, and the second state of charge is 5%, because the first state of charge 25% is greater than the preset state of charge 20%, at this time, the state of charge is controlled to be reduced from 25% to 5% within 5 minutes, so that the remaining battery capacity can be accurately displayed to a user, the jump of the state of charge is avoided, and the battery is suddenly shut down when the state of charge is greater than 0%, so that the user experience is effectively improved.
It should be noted that, since the pre-shutdown voltage is higher than the shutdown voltage, the second state of charge corresponding to the pre-shutdown voltage should be greater than the state of charge corresponding to the shutdown voltage by 0%, for example: the second state of charge is set to 5%. However, the pre-shutdown voltage is not higher than the shutdown voltage too much, so the second state of charge is also not set too high.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; when the first charge state is larger than the preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value; and in the first time, controlling the charge state to be reduced from the first charge state to a second charge state corresponding to a pre-shutdown voltage value, wherein the pre-shutdown voltage value is greater than the shutdown voltage value. When the first charge state is larger than the preset charge state, the abnormal condition that the charge state jumps possibly occurs or the abnormal condition that the battery is suddenly shut down when the charge state is 20% occurs, at this time, the value of the first time required for reducing the voltage value of the battery from the acquired real-time voltage value to the voltage value of the battery is calculated, and the charge state is controlled to be reduced from the first charge state to the second charge state corresponding to the voltage value of the battery in the first time, at this time, the mobile terminal can accurately show the residual electric quantity of the battery to a user, the jump of the charge state and the abnormal condition that the battery is suddenly shut down similarly to 20% of the electric quantity are avoided, and the user experience is effectively improved.
In one embodiment, the step S103 may include the following substeps A1-A2:
at a1, a first state of charge degradation value corresponding to each first preset time period in the first time is determined according to the values of the first state of charge, the second state of charge and the first time.
In a2, the state of charge is controlled to be reduced from the first state of charge to the second state of charge within the first time according to the first state of charge reduction value corresponding to each first preset time period.
In order to avoid the situation that the state of charge jumps too much, the first time may be divided into a plurality of first preset time periods, and then a first state of charge drop value in each first preset time period is determined, so as to control the drop of the state of charge based on the drop value.
For example: the first time is 5 minutes, and the first time can be uniformly divided into 4 first preset time periods, which are respectively: 1 minute to 2 minutes is the 1 st first preset time period, 2 minutes to 3 minutes is the 2 nd first preset time period, 3 minutes to 4 minutes is the 3 rd first preset time period, and 4 minutes to 5 minutes is the 4 th first preset time period. Of course, it is also possible that the respective first preset time periods of the first time division are not uniform, for example: the first time may be divided into 3 first preset time periods, which are: 1 minute to 2 minutes is the 1 st first preset time period, 2 minutes to 4 minutes is the 2 nd first preset time period, and 4 minutes to 5 minutes is the 3 rd first preset time period.
Continuing with the above example: the first state of charge is 25%, the second state of charge is 5%, the first state of charge reduction value in each first preset time period is respectively determined according to the first state of charge of 25% and the second state of charge of 5%, and then the state of charge is reduced and changed according to the determined reduction value in each first preset time period, so that the state of charge is changed to 5% in the 5 th minute.
Continuing with the above example: the first time comprises 3 first preset time periods, the first charge state reduction value corresponding to the 1 st first preset time period is 5%, the first charge state reduction value corresponding to the 2 nd first preset time period is 7%, the first charge state reduction value corresponding to the 3 rd first preset time period is 8%, the charge state is controlled to be reduced from 25% to 20% in the 1 st first preset time period, the charge state is controlled to be reduced from 20% to 13% in the 2 nd first preset time period, and the charge state is controlled to be reduced from 13% to 5% in the 3 rd first preset time period.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: determining a first state of charge reduction value corresponding to each first preset time period in the first time based on the values of the first state of charge, the second state of charge and the first time; and then according to the first charge state reduction value corresponding to each first preset time period, controlling the charge state to be reduced from the first charge state to a second charge state in the first time period, thereby avoiding the abnormal condition of the charge state and effectively improving the user experience.
In one embodiment, the determining a first state of charge drop value corresponding to each first preset time period in the first time according to the values of the first state of charge, the second state of charge and the first time includes the following sub-steps B1-B2:
in B1, a difference between the second state of charge and the first state of charge is calculated.
In B2, a first state of charge degradation value corresponding to each first preset time period in the first time period is obtained according to the difference.
In order to more accurately determine the first state of charge degradation value corresponding to each first preset time period, the first state of charge degradation values may be determined based on a difference between the second state of charge and the first state of charge.
Since the lower the battery power is, the faster the charge state jump is possible, it may be determined that the first charge state degradation values corresponding to each of the first preset time periods are all different according to the difference, but the sum of the first charge state degradation values is the difference. For example: the first charge state reduction value of the first preset time period is 4%, the first charge state reduction value of the second preset time period is 5%, and the first charge state reduction value of the third preset time period is 6%; or the first state of charge reduction value of the first preset time period is 3%, the first state of charge reduction value of the second preset time period is 6%, and the first state of charge reduction value of the third preset time period is 5%.
It may be determined that the first state of charge degradation values corresponding to some of the first preset time periods are the same, and the first state of charge degradation values corresponding to some of the first preset time periods are different, but the sum of the first state of charge degradation values is the difference. For example: the first state of charge degradation value in the first preset time period is 4%, the first state of charge degradation value in the second preset time period is 5%, and the first state of charge degradation value in the third preset time period is 4%.
Controlling the soc to decrease from the first soc to the second soc by the first soc decrease value may not smooth the change of soc displayed to the user.
Therefore, in order to smoothly show the change of the state of charge to the user, it may be determined that the first state of charge decrease values are the same for each first preset time period, but the sum of the first state of charge decrease values is the difference. For example: according to the first preset time interval dividing method, the same first state of charge reduction value is set in each time interval, the state of charge is reduced from 25% to 5%, namely 20%, and then the first state of charge reduction value in each time interval is 5%, namely, the state of charge is reduced from 25% to 20% in 1-2 minutes; the charge state value is reduced to 15% from 20% in 2-3 min; in 3-4 minutes, the charge state value is reduced from 15% to 10%; the state of charge value drops from 15% to the second state of charge of 5% in 4 minutes to 5 minutes.
The first state of charge drop value may be further refined to a smaller time unit such as seconds for smoother display of the state of charge.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the first charge state reduction value corresponding to each first preset time period in the first time is obtained according to the difference value between the second charge state and the first charge state, so that the accuracy of determining the first charge state reduction value can be effectively improved.
In one embodiment, after the control state of charge is decreased from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value, the method further includes the following steps C1-C4:
at C1, the current voltage value of the battery is obtained.
In C2, a value of a second time required for the voltage value of the battery to decrease from the current voltage value to the shutdown voltage value is calculated.
In step C3, a second state of charge decrease value corresponding to each second preset time period in the second time is determined according to the second state of charge, the third state of charge corresponding to the shutdown voltage value, and the second time value.
The implementation manner of this step is the same as the implementation manner of determining the first state of charge degradation value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge, and the value of the first time in the above embodiment, and details are not repeated here.
And in the step C4, controlling the state of charge to be decreased from the second state of charge to a third state of charge within a second time according to the second state of charge decrease value corresponding to each second preset time period.
The implementation manner of this step is the same as that of controlling the state of charge to decrease from the first state of charge to the second state of charge within the first time according to the first state of charge decrease value corresponding to each first preset time period in the above embodiment, and details are not repeated here.
In practical applications, the mobile terminal may be powered off when the voltage is lower than the power-off voltage, for example: if the shutdown voltage is set to 3.4V, the SOC corresponding to 3.4V should be 0%, but it may happen that when the battery voltage is 3.4V, the SOC is not 0%, then the mobile terminal is not shutdown, but when the battery voltage is less than 3.4V, the SOC is changed to 0%, and then the mobile terminal is shutdown.
In order to effectively protect the power module of the mobile terminal and avoid the shutdown of the mobile terminal when the power module of the mobile terminal is lower than the shutdown voltage, the method still continues to execute the steps in the embodiment after the charge state is controlled to be reduced from the first charge state to the second charge state corresponding to the pre-shutdown voltage value.
After the charge state is controlled to be reduced from the first charge state to a second charge state corresponding to the pre-shutdown voltage value, since the pre-shutdown voltage is higher than the shutdown voltage, but due to changes in load and environment, the power consumption of the battery will also change accordingly, in order to display the state of charge more accurately, at this time, the current voltage value of the battery is acquired, and then calculates a value of a second time required for the voltage value of the battery to decrease from the current voltage value to the shutdown voltage value, determining a second charge state reduction value corresponding to each second preset time period in the second time according to the second charge state, a third charge state corresponding to the shutdown voltage value and the value of the second time, determining a second charge state reduction value corresponding to each second preset time period in the second time according to the second charge state reduction value corresponding to each second preset time period, and controlling the state of charge to be reduced from the second state of charge to a third state of charge in a second time.
The third state of charge can be set to 0%, and when the SOC reaches 0%, the mobile terminal is turned off, so that the accuracy of the turn-off voltage of the mobile terminal is ensured.
FIG. 2 is a flow chart illustrating a method of controlling state of charge, as shown in FIG. 2, including the steps of:
in step S201, when it is monitored that a difference between a real-time voltage value of the battery and a pre-shutdown voltage value satisfies a preset voltage value, acquiring a first state of charge corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value.
In step S202, when the first state of charge is greater than the preset state of charge, a value of a first time required for the voltage value of the battery to decrease from the real-time voltage value to the pre-shutdown voltage value is calculated.
In step S203, a difference between the second state of charge and the first state of charge is calculated.
In step S204, a first state of charge degradation value corresponding to each first preset time period within the first time period is obtained according to the difference. And the first state of charge descending values corresponding to each first preset time period are the same.
In step S205, the state of charge is controlled to decrease from the first state of charge to the second state of charge within the first time according to the first state of charge decrease value corresponding to each first preset time period.
If the first charge state of the mobile equipment is larger than the preset charge state, the value of the first time when the battery voltage is reduced to the pre-shutdown voltage under the current load is estimated, and then the first charge state is smoothly reduced to the second charge state within the first time.
For example: the preset state of charge is 20%, the pre-shutdown voltage is 3.5V, and the second state of charge is 5%, then if the first state of charge of the mobile device is greater than 20%, a value of the first time when the battery voltage drops to 3.5V under the current load is estimated, and further the first state of charge is smoothly dropped to 5% within the first time.
In step S206, after the state of charge is controlled to decrease from the first state of charge to the second state of charge corresponding to the pre-shutdown voltage value, the current voltage value of the battery is obtained.
In step S207, a value of a second time required for the voltage value of the battery to decrease from the current voltage value to the shutdown voltage value is calculated.
In step S208, a second soc decrease value corresponding to each second preset time period within the second time is determined according to the second soc, the third soc corresponding to the shutdown voltage value, and the second time value.
In step S209, the state of charge is controlled to decrease from the second state of charge to a third state of charge within a second time according to a second state of charge decrease value corresponding to each second preset time period.
On the basis of an electricity meter algorithm in the related art, a pre-shutdown voltage and a simple and effective SOC optimization method are preset, so that the SOC is still 20% or a higher value when the system is shut down at 3.4V in some extreme use scenes (such as high and low temperature changes and variable load conditions), and the user experience is improved.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 3 is a block diagram illustrating a state of charge control apparatus that may be implemented as part or all of an electronic device via software, hardware, or a combination of both, according to an exemplary embodiment. As shown in fig. 3, the state of charge control device includes:
the first obtaining module 11 is configured to obtain a first state of charge corresponding to a real-time voltage value when a difference between the real-time voltage value and a pre-shutdown voltage value of the battery is monitored to meet a preset voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
the first calculating module 12 is configured to calculate a value of a first time required for reducing the voltage value of the battery from the real-time voltage value to the pre-shutdown voltage value when the first state of charge acquired by the first acquiring module 11 is greater than a preset state of charge;
the first control module 13 is configured to control the state of charge to decrease from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value within the first time calculated by the first calculation module 12.
In one embodiment, as shown in fig. 4, the first control module 13 includes: a determination sub-module 131 and a control sub-module 132;
the determining submodule 131 is configured to determine, according to the first state of charge, the second state of charge, and the value of the first time calculated by the first calculating module 12, a first state of charge drop value corresponding to each first preset time period in the first time;
the control sub-module 132 is configured to control the state of charge to decrease from the first state of charge to the second state of charge within the first time according to the first state of charge decrease value corresponding to each first preset time period determined by the determination sub-module 131.
In one embodiment, as shown in fig. 5, the determining sub-module 131 includes: a computation submodule 1311 and an acquisition submodule 1312;
the calculating sub-module 1311 is configured to calculate a difference between the second state of charge and the first state of charge acquired by the first acquiring module 11;
the obtaining sub-module 1312 is configured to obtain a first state of charge degradation value corresponding to each first preset time period in the first time according to the difference value calculated by the calculating sub-module 1311.
In one embodiment, the first state of charge decrease values corresponding to each of the first preset time periods are the same.
In one embodiment, as shown in fig. 6, the apparatus further comprises: a second obtaining module 14, a second calculating module 15, a determining module 16 and a second control module 17;
the second obtaining module 14 is configured to obtain a current voltage value of the battery after the first control module 13 controls the state of charge to decrease from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value;
the second calculating module 15 is configured to calculate a value of a second time required for the voltage value of the battery to decrease from the current voltage value acquired by the second acquiring module to the shutdown voltage value;
the determining module 16 is configured to determine a second soc reduction value corresponding to each second preset time period within the second time according to the second soc, the third soc corresponding to the shutdown voltage value, and the second time value calculated by the second calculating module 15;
the second control module 17 is configured to control the state of charge to decrease from the second state of charge to the third state of charge within the second time according to the second state of charge decrease value corresponding to each second preset time period determined by the determination module 16.
According to a third aspect of the embodiments of the present disclosure, there is provided a state of charge control apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
when the first charge state is larger than a preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value;
and controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time.
The processor may be further configured to:
in the first time, the step of controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value comprises the following steps:
determining a first state of charge reduction value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value;
and controlling the state of charge to be reduced from the first state of charge to the second state of charge within the first time according to the first state of charge reduction value corresponding to each first preset time period.
Determining a first state of charge degradation value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value, wherein the determining comprises:
calculating a difference between the second state of charge and the first state of charge;
and acquiring a first charge state drop value corresponding to each first preset time period in the first time according to the difference.
The first state of charge reduction values corresponding to each first preset time period are the same.
After the control state of charge is reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value, the method further includes:
acquiring the current voltage value of the battery;
calculating a value of a second time required for the voltage value of the battery to be reduced from the current voltage value to the shutdown voltage value;
determining a second charge state reduction value corresponding to each second preset time period in the second time according to the second charge state, a third charge state corresponding to the shutdown voltage value and the second time value;
and controlling the state of charge to be reduced from the second state of charge to the third state of charge within the second time according to a second state of charge reduction value corresponding to each second preset time period.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 7 is a block diagram illustrating a control apparatus 80 for state of charge, which is suitable for use in a mobile terminal, according to an exemplary embodiment. For example, the apparatus 80 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
The apparatus 80 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.
The processing component 802 generally controls overall operation of the device 80, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction 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 apparatus 80. Examples of such data include instructions for any application or method operating on the device 80, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile 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 disks.
The power supply component 806 provides power to the various components of the device 80. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 80.
The multimedia component 808 includes a screen that provides an output interface between the device 80 and the user. 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 80 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
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 apparatus 80 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also 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 keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 80. For example, the sensor assembly 814 may detect the on/off status of the device 80, relative positioning of the components, such as the display and keypad of the device 80, the sensor assembly 814 may also detect a change in the position of the device 80 or a component of the device 80, the presence or absence of user contact with the device 80, the orientation or acceleration/deceleration of the device 80, and a change in the temperature of the device 80. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object 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 gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate wired or wireless communication between the apparatus 80 and other devices. The device 80 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an 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 80 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the apparatus 80 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium having instructions stored thereon which, when executed by a processor of a device 80, enable the device 80 to perform the above-described state of charge control method, the method comprising:
when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
when the first charge state is larger than a preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value;
and controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time.
In the first time, the step of controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value comprises the following steps:
determining a first state of charge reduction value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value;
and controlling the state of charge to be reduced from the first state of charge to the second state of charge within the first time according to the first state of charge reduction value corresponding to each first preset time period.
Determining a first state of charge degradation value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value, wherein the determining comprises:
calculating a difference between the second state of charge and the first state of charge;
and acquiring a first charge state drop value corresponding to each first preset time period in the first time according to the difference.
The first state of charge reduction values corresponding to each first preset time period are the same.
After the control state of charge is reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value, the method further includes:
acquiring the current voltage value of the battery;
calculating a value of a second time required for the voltage value of the battery to be reduced from the current voltage value to the shutdown voltage value;
determining a second charge state reduction value corresponding to each second preset time period in the second time according to the second charge state, a third charge state corresponding to the shutdown voltage value and the second time value;
and controlling the state of charge to be reduced from the second state of charge to the third state of charge within the second time according to a second state of charge reduction value corresponding to each second preset time period.
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 application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the 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 will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A method of controlling a state of charge, comprising:
when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
when the first charge state is larger than a preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value;
controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time;
in the first time, the step of controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value comprises the following steps:
determining a first state of charge reduction value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value;
according to a first charge state reduction value corresponding to each first preset time period, controlling the charge state to be reduced from the first charge state to the second charge state within the first time period;
determining a first state of charge degradation value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value, wherein the determining comprises:
calculating a difference between the second state of charge and the first state of charge;
and acquiring a first charge state drop value corresponding to each first preset time period in the first time according to the difference.
2. The method of claim 1, wherein the first soc reduction value for each of the first predetermined time periods is the same.
3. The method of claim 1, wherein after the control state of charge is reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value, the method further comprises:
acquiring the current voltage value of the battery;
calculating a value of a second time required for the voltage value of the battery to be reduced from the current voltage value to the shutdown voltage value;
determining a second charge state reduction value corresponding to each second preset time period in the second time according to the second charge state, a third charge state corresponding to the shutdown voltage value and the second time value;
and controlling the state of charge to be reduced from the second state of charge to the third state of charge within the second time according to a second state of charge reduction value corresponding to each second preset time period.
4. A state-of-charge control apparatus, comprising:
the first acquisition module is used for acquiring a first charge state corresponding to a real-time voltage value when a difference value between the real-time voltage value and a pre-shutdown voltage value of the battery is monitored to meet a preset voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
the first calculation module is used for calculating a value of the first time required for reducing the voltage value of the battery from the real-time voltage value to the pre-shutdown voltage value when the first charge state acquired by the first acquisition module is greater than a preset charge state;
the first control module is used for controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value within the first time calculated by the first calculation module;
the first control module includes: a determination submodule and a control submodule;
the determining submodule is used for determining a first charge state reduction value corresponding to each first preset time period in the first time according to the first charge state, the second charge state and the value of the first time calculated by the first calculating module;
the control submodule is used for controlling the state of charge to be reduced from the first state of charge to the second state of charge within the first time according to the first state of charge reduction value corresponding to each first preset time period determined by the determination submodule;
the determination sub-module includes: a calculation submodule and an acquisition submodule;
the calculation submodule is used for calculating a difference value between the second state of charge and the first state of charge acquired by the first acquisition module;
the obtaining submodule is used for obtaining a first state of charge reduction value corresponding to each first preset time period in the first time according to the difference value calculated by the calculating submodule.
5. The apparatus of claim 4, wherein the first SOC degradation values for each of the first predetermined time periods are the same.
6. The apparatus of claim 4, further comprising a second obtaining module, a second calculating module, a determining module, and a second controlling module;
the second obtaining module is used for obtaining the current voltage value of the battery after the first control module controls the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value;
the second calculating module is configured to calculate a value of a second time required for the voltage value of the battery to decrease from the current voltage value acquired by the second acquiring module to the shutdown voltage value;
the determining module is configured to determine a second state of charge drop value corresponding to each second preset time period within the second time according to the second state of charge, a third state of charge corresponding to the shutdown voltage value, and the second time value calculated by the second calculating module;
the second control module is configured to control the state of charge to decrease from the second state of charge to the third state of charge within the second time according to the second state of charge decrease value corresponding to each second preset time period determined by the determination module.
7. A state-of-charge control apparatus, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when the difference value between the real-time voltage value and the pre-shutdown voltage value of the battery is monitored to meet a preset voltage value, acquiring a first charge state corresponding to the real-time voltage value; the pre-shutdown voltage value is greater than the shutdown voltage value;
when the first charge state is larger than a preset charge state, calculating a value of first time required for reducing the voltage value of the battery from the real-time voltage value to the preset shutdown voltage value;
controlling the state of charge to be reduced from the first state of charge to a second state of charge corresponding to the pre-shutdown voltage value in the first time;
determining a first state of charge drop value corresponding to each first preset time period in the first time according to the first state of charge, the second state of charge and the first time value, wherein the determining comprises the following steps:
calculating a difference between the second state of charge and the first state of charge;
and acquiring a first charge state drop value corresponding to each first preset time period in the first time according to the difference.
8. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, carry out the steps of the method according to any one of claims 1 to 3.
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