CN117712522B - Battery power management method, electronic device and storage medium - Google Patents
Battery power management method, electronic device and storage medium Download PDFInfo
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- CN117712522B CN117712522B CN202410167093.0A CN202410167093A CN117712522B CN 117712522 B CN117712522 B CN 117712522B CN 202410167093 A CN202410167093 A CN 202410167093A CN 117712522 B CN117712522 B CN 117712522B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a battery power management method, electronic equipment and a storage medium, and relates to the field of battery management, wherein the method comprises the following steps: the method comprises the steps of determining a first voltage when the battery is in a non-stationary state under the condition that the stationary time of the battery does not meet the stationary condition and the battery is in the non-stationary state, determining a first electric quantity accumulated value and a second voltage of the battery during a first charge and discharge time period under the condition that the battery meets a first preset condition, wherein the first charge and discharge time period represents the time period when the battery is in charge or discharge, determining a voltage trend of the battery based on the first voltage and the second voltage, determining the charge and discharge state of the battery based on the voltage trend, and calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge state of the battery. The direction of the current sensor can be self-adapted, the current collection direction of the BMS is not required to be forcibly matched, and when the direction of the sensor is not matched with the BMS, the management of the electric quantity of the battery can be realized without manual intervention.
Description
Technical Field
The present invention relates to the field of battery management technologies, and in particular, to a battery power management method, an electronic device, and a storage medium.
Background
Two general types of cases are commonly used in on-board or large-scale energy storage battery systems: PACK tanks and high pressure tanks. The PACK box integrates the battery core, the cooling mode, the secondary control and the like, and the battery core acquisition and thermal management component. The high-voltage box integrates electrical components such as contactors, current sensors, fuses, and battery management system master control.
The function of the current sensor is to collect current, the battery management system main control judges that the battery cluster is in a charging, discharging and standing state according to the current direction, and meanwhile, ampere-hour integration is carried out according to the current value to provide key basic data for an SOX algorithm.
However, because the current sensor and the related collection wiring harness can be installed with a direction error, the problem of reverse installation can be determined after the high-voltage box is assembled and put into a battery cluster for charge and discharge and then manually observed and judged, and the adjustment is manually performed after the reverse installation is found. If the voltage is not recognized by the manpower, the voltage is seriously alarmed in the discharging process, the voltage is seriously alarmed in the charging process, and if the related strategies are mutually exclusive, the corresponding protection cannot be started, so that the serious problem is caused.
Disclosure of Invention
The invention aims to provide a battery power management method, electronic equipment and a storage medium, which can adapt to the direction of a current sensor and realize battery power management.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
In a first aspect, the present invention provides a method for battery power management, the method comprising:
Determining a first voltage when a battery is in a non-stationary state when the stationary time of the battery does not meet a stationary condition and the battery is in the non-stationary state, wherein the non-stationary state indicates that the battery is in a charged state or a discharged state;
Determining a first electric quantity accumulated value and a second voltage of the battery in a first charge-discharge time period under the condition that the battery meets a first preset condition, wherein the first preset condition indicates that the current direction of the battery is unchanged and the current of the battery is unchanged in the first charge-discharge time period, and the first charge-discharge time period indicates the time period that the battery is charged or discharged;
Determining a voltage trend of the battery based on the first voltage and the second voltage;
determining a charge-discharge state of the battery based on the voltage trend;
And calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge states of the battery.
Optionally, the step of determining the voltage trend of the battery based on the first voltage and the second voltage includes:
Calculating a first difference between the second voltage and the first voltage;
When the first difference value is positive, determining that the voltage trend of the battery rises;
and when the first difference value is a negative value, determining that the voltage trend of the battery is reduced.
Optionally, the step of determining the charge-discharge state of the battery based on the voltage trend includes:
Determining that a charge-discharge state of the battery is converted from the rest state to the charged state in a case where the voltage trend of the battery increases;
A step of calculating the electric quantity of the battery based on the first electric quantity accumulation value according to the charge-discharge state of the battery, including:
Determining an original electric quantity of the battery;
and taking the sum of the first electric quantity accumulated value and the original electric quantity as the total electric quantity of the battery.
Optionally, the step of determining the charge-discharge state of the battery based on the voltage trend includes:
determining that a charge-discharge state of the battery is converted from the rest state to the discharge state in the case where a voltage trend of the battery is reduced;
the step of calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge state of the battery comprises the following steps:
Determining an original electric quantity of the battery;
and taking the difference value of the original electric quantity and the first electric quantity accumulated value as the total electric quantity of the battery.
Optionally, the method further comprises:
Determining a third voltage of the battery within a second charge-discharge time period under the condition that the battery meets a second preset condition, wherein the second preset condition indicates that the current direction of the battery is changed within the second charge-discharge time period and the current is unchanged, and the second charge-discharge time period comprises a first charge-discharge time period in which the current direction of the battery is unchanged, and a second charge-discharge time period in which the current direction of the battery is changed and the current is unchanged;
Determining a second electric quantity accumulated value of the battery in the first charge-discharge electronic time period and a third electric quantity accumulated value of the battery in the second charge-discharge electronic time period;
determining the voltage trend of the battery based on the third voltage and the first voltage;
determining a charge-discharge state of the battery based on the voltage trend of the battery;
and calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge and discharge states of the battery.
Optionally, the step of determining the charge-discharge state of the battery based on the voltage trend includes:
Determining that the battery is converted from the rest state to the charge state in the first charge-discharge electronic duration and from the charge state to the discharge state in the second charge-discharge electronic duration under the condition that the voltage trend of the battery rises, wherein the third voltage is larger than the first voltage and indicates that the voltage trend of the battery rises;
And calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge-discharge state of the battery, wherein the step comprises the following steps:
Determining an original electric quantity of the battery;
Calculating a second difference value between the third electric quantity accumulated value and the second electric quantity accumulated value;
And calculating the sum of the original electric quantity and the second difference value as the total electric quantity of the battery.
Optionally, the step of determining the charge-discharge state of the battery based on the voltage trend includes:
determining that the battery is converted from the rest state to the discharge state in the first charge-discharge electronic duration and from the discharge state to the charge state in the second charge-discharge electronic duration under the condition that the voltage trend of the battery is reduced, wherein the third voltage is smaller than the first voltage and indicates that the voltage trend of the battery is reduced;
And calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge-discharge state of the battery, wherein the step comprises the following steps:
Determining an original electric quantity of the battery;
calculating a third difference value between the third electric quantity accumulated value and the second electric quantity accumulated value;
And calculating the sum of the original electric quantity and the third difference value as the total electric quantity of the battery.
Optionally, the method further comprises:
Determining a fourth voltage of the battery in a third charge-discharge time period under the condition that the battery meets a third preset condition, wherein the third preset condition indicates that the current direction of the battery is unchanged in the third charge-discharge time period, the current magnitude is changed, and the third charge-discharge time period comprises a third charge-discharge time period in which the current magnitude of the battery is unchanged and a fourth charge-discharge time period in which the current magnitude of the battery is changed;
Determining a fourth electric quantity accumulated value of the battery in a third charge-discharge electronic time period and a fifth electric quantity accumulated value of the battery in the fourth charge-discharge electronic time period;
determining a first current of the battery in the third charge-discharge electronic duration and a second current of the battery in the fourth charge-discharge electronic duration;
Determining a change value of a current based on the first current and the second current;
determining a voltage trend of the battery based on the fourth voltage and the first voltage;
determining a charge-discharge state of the battery based on the change value and the voltage trend, in the case that the change value exceeds a preset change value;
and calculating the electric quantity of the battery based on the fourth electric quantity accumulated value and the fifth electric quantity accumulated value according to the charge and discharge state of the battery.
Optionally, the step of determining the charge and discharge state of the battery based on the change value and the voltage trend when the change value exceeds a preset change value includes:
Determining that the charge-discharge state of the battery is changed from the rest state to a high-current charge state in the third charge-discharge electronic duration and from the high-current charge state to a low-current charge state in the fourth charge-discharge electronic duration when the change value indicates that the first current is larger than the second current and the voltage trend is reduced, wherein the fourth voltage is smaller than the first voltage and indicates that the voltage trend of the battery is reduced;
Determining that the charge-discharge state of the battery is changed from the rest state to a large-current discharge state in the third charge-discharge electronic duration and from the large-current discharge state to a small-current discharge state in the fourth charge-discharge electronic duration when the change value indicates that the first current is larger than the second current and the voltage trend rises, wherein the fourth voltage is larger than the first voltage and indicates that the voltage trend of the battery rises;
Determining that the charge-discharge state of the battery is changed from the rest state to the low-current charge state in the third charge-discharge sub-period and from the low-current charge state to the high-current charge state in the fourth charge-discharge sub-period, in the case where the change value indicates that the first current is smaller than the second current and the voltage trend is rising;
and under the condition that the change value indicates that the first current is smaller than the second current and the voltage trend is reduced, determining that the charge-discharge state of the battery is changed from the rest state to the small-current discharge state in the third charge-discharge electronic duration and is changed from the small-current discharge state to the large-current discharge state in the fourth charge-discharge electronic duration.
Optionally, the step of calculating the electric quantity of the battery based on the fourth electric quantity accumulated value and the fifth electric quantity accumulated value according to the charge-discharge state of the battery includes:
Determining an original electric quantity of the battery when the charge-discharge state of the battery is converted from the rest state to a high-current charge state in the third charge-discharge sub-period, the charge-discharge state of the battery is converted from the high-current charge state to a low-current charge state in the fourth charge-discharge sub-period, or the charge-discharge state of the battery is converted from the rest state to the low-current charge state in the third charge-discharge sub-period, and the charge-discharge state of the battery is converted from the low-current charge state to the high-current charge state in the fourth charge-discharge sub-period;
Calculating a first sum of the fourth and fifth electric quantity accumulation values;
calculating a second sum of the original electric quantity and the first sum as a total electric quantity of the battery;
And when the charge-discharge state of the battery is that the battery is converted from the rest state to a high-current discharge state in the third charge-discharge time period, the battery is converted from the high-current discharge state to a low-current discharge state in the fourth charge-discharge time period, or the charge-discharge state of the battery is that the battery is converted from the rest state to the low-current discharge state in the third charge-discharge time period, and the battery is converted from the low-current discharge state to the high-current discharge state in the fourth charge-discharge time period, calculating a fourth difference value between the original electric quantity and the first sum to be used as the total electric quantity of the battery.
In a second aspect, the present invention provides an electronic device comprising a memory storing a computer program and a processor implementing the steps of the battery level management method when the processor executes the computer program.
In a third aspect, the present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the battery level management method.
The invention has the following beneficial effects:
When the standing time of the battery does not meet the standing condition and the battery is in a non-standing state, determining a first voltage when the battery is in the non-standing state, wherein the non-standing state represents that the battery is in a charging state or a discharging state, and when the battery meets a first preset condition, determining a first electric quantity accumulation value and a second voltage of the battery in a first charging and discharging time period, wherein the first preset condition represents that the current direction of the battery is unchanged and the current of the battery is unchanged in the first charging and discharging time period, the first charging and discharging time period represents that the battery is in charging or discharging time period, determining the voltage trend of the battery based on the first voltage and the second voltage, determining the charging and discharging state of the battery based on the voltage trend, and calculating the electric quantity of the battery based on the first electric quantity accumulation value according to the charging and discharging state of the battery. But self-adaptation current sensor direction need not to match BMS (Battery MANAGEMENT SYSTEM) current acquisition direction by force, when sensor direction and BMS mismatch, need not manual intervention and can realize Battery power management.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of an electronic device according to an embodiment of the present invention;
Fig. 2 is a schematic flow chart of a battery power management method according to an embodiment of the present invention;
FIG. 3 is a second flowchart of a battery power management method according to an embodiment of the present invention;
FIG. 4 is a third flow chart of a battery power management method according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for managing battery power according to an embodiment of the present invention;
Fig. 6 is a block diagram of a battery power management device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Through a large number of researches, the problem of incorrect installation direction of a current sensor and a related acquisition wire harness may exist in actual operation, and whether the problem of reverse installation exists can be determined by manually observing and judging after the high-voltage box is assembled and put into a battery cluster for charging and discharging, and manually adjusting after the reverse installation is found. If the protection is not recognized by the manpower, the over-voltage serious alarm in the discharging process and the under-voltage serious alarm in the charging process can occur, and if the related strategies are mutually exclusive and the corresponding protection can not be started, serious problems can be caused.
In view of the above-mentioned problems, the present embodiment provides a battery power management method, an electronic device, and a storage medium, where the battery power management method, the electronic device, and the storage medium are capable of determining a first voltage when a battery is in an unset state when a rest time of the battery does not satisfy a rest condition and the battery is in the unset state, where the unset state represents that the battery is in a charge state or a discharge state, and determining a first power accumulation value and a second voltage of the battery for a first charge-discharge time period when the battery satisfies a first preset condition, where the first preset condition represents that a current direction of the battery does not change and a current magnitude of the battery does not change within the first charge-discharge time period, the first charge-discharge time period represents a time period when the battery is in charge or discharge, determining a voltage trend of the battery based on the first voltage and the second voltage, determining a charge-discharge state of the battery based on the voltage trend, and calculating the battery based on the first power accumulation value according to the charge-discharge state of the battery. But self-adaptation current sensor direction need not to match BMS (Battery MANAGEMENT SYSTEM) current acquisition direction by force, when sensor direction and BMS mismatch, need not manual intervention and can realize Battery power management, the scheme that this embodiment provided is explained in detail below.
The embodiment provides an electronic device capable of managing battery power. In one possible implementation, the electronic device may be a user terminal, for example, the electronic device may be, but is not limited to, a server, a smart phone, a Personal computer (PersonalComputer, PC), a tablet, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a Mobile internet device (Mobile INTERNET DEVICE, MID), or the like.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the invention. The electronic device 100 may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
The electronic device 100 includes a battery power management apparatus 110, a memory 120, and a processor 130.
The memory 120 and the processor 130 are electrically connected directly or indirectly to each other to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The battery power management device 110 includes at least one software function module that may be stored in the memory 120 in the form of software or firmware (firmware) or cured in an Operating System (OS) of the electronic device 100. The processor 130 is configured to execute executable modules stored in the memory 120, such as software functional modules and computer programs included in the battery power management device 110.
The Memory 120 may be, but is not limited to, a random access Memory (RandomAccess Memory, RAM), a Read Only Memory (ROM), a programmable Read Only Memory (Programmable Read-Only Memory, PROM), an erasable Read Only Memory (Erasable ProgrammableRead-Only Memory, EPROM), an electrically erasable Read Only Memory (Electric Erasable ProgrammableRead-Only Memory, EEPROM), etc. The memory 120 is configured to store a program, and the processor 130 executes the program after receiving an execution instruction.
Referring to fig. 2, fig. 2 is a flowchart of a battery power management method applied to the electronic device 100 of fig. 1, and the method includes various steps described in detail below.
S201: in a case where the resting time of the battery does not satisfy the resting condition and the battery is in the non-resting state, the first voltage when the battery is in the non-resting state is determined.
Wherein the non-stationary state indicates that the battery is in a charged state or a discharged state.
S202: and under the condition that the battery meets the first preset condition, determining a first electric quantity accumulated value and a second voltage of the battery in the first charge-discharge time period.
The first preset condition indicates that the current direction of the battery is unchanged and the current magnitude of the battery is unchanged in a first charge-discharge duration, and the first charge-discharge duration indicates the duration that the battery is charged or discharged.
S203: a voltage trend of the battery is determined based on the first voltage and the second voltage.
S204: the charge-discharge state of the battery is determined based on the voltage trend.
S205: and calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge states of the battery.
Before the static time of the battery is determined, the state of the battery can be judged, under the condition that the battery is in the static state, the static time of the battery is counted and accumulated, and the state of the battery is monitored in real time until the state of the battery is in a charging state or a discharging state is monitored, and the static time of the battery is determined.
In the case where it is determined that the state of the battery is a charged or discharged state, the rest time of the battery is read.
Comparing the standing time of the battery with a preset standing time, and determining that the standing time of the battery meets the standing condition under the condition that the standing time of the battery is greater than or equal to the preset standing time, and determining that the standing time of the battery does not meet the standing condition if the standing time of the battery is less than the preset standing time. At this time, the battery power management method of the invention is used for managing the power of the battery.
When it is detected that the battery is charged or discharged, the present current direction is recorded as 0.
When the battery is detected to be in a non-stationary state and the stationary time does not satisfy the stationary condition, a first voltage of the battery is determined. And when the current direction of the battery is unchanged and the charge and discharge current is unchanged, determining a second voltage of the battery after the first charge and discharge time period of charging or discharging.
A voltage trend of the battery is determined based on a magnitude relationship of the first voltage and the second voltage. Exemplary: and calculating a first difference value between the second voltage and the first voltage, determining that the voltage trend of the battery rises when the first difference value is positive, and determining that the voltage trend of the battery falls when the first difference value is negative. The charging and discharging state of the battery in the first charging and discharging time period when the battery meets the first preset condition can be determined based on the voltage trend of the battery, so that whether the first electric quantity accumulated value needs to be processed reversely or not is judged to calculate the electric quantity of the battery.
According to the battery electric quantity management method provided by the invention, manual intervention is not needed when the current sensor is installed reversely, and whether the first battery accumulation amount needs to be reversely processed or not can be directly judged based on the charging state so as to determine the electric quantity of the battery, so that the direction self-adaption of the current sensor is realized.
In determining a charge-discharge state of the battery based on the voltage trend, and performing charge calculation of the battery based on the first charge accumulated value based on the charge-discharge state, there are various implementations, in one implementation, as shown in fig. 3, including the steps of:
S204-1: in the case where the voltage trend of the battery increases, it is determined that the charge-discharge state of the battery is converted from the stationary state to the charged state.
S205-1: an initial charge of the battery is determined.
S205-2: and taking the sum of the first electric quantity accumulated value and the original electric quantity as the total electric quantity of the battery.
Under the condition that the voltage trend of the battery rises, the state of charge of the battery in the first charge-discharge duration is converted from a rest state to a state of charge under the condition that the first preset condition is met, and then the first electric quantity accumulated value is directly added with the original electric quantity of the battery to be used as the total electric quantity of the battery.
Under the condition that the voltage trend of the battery is reduced, the state of charge of the battery is converted from a static state to a discharging state in a first charge-discharge duration under the condition that the first preset condition is met, and the first electric quantity accumulated value is reversely processed, namely, the original electric quantity of the battery and the first electric quantity accumulated value are differed to be used as the total electric quantity of the battery.
When the battery does not meet the first preset condition, there are various implementations of managing the electric quantity of the battery, and in one implementation, as shown in fig. 4, the method includes the following steps:
S301: and determining a third voltage of the battery in the second charge-discharge duration under the condition that the battery meets the second preset condition.
The second preset condition indicates that the current direction of the battery is changed within a second charge-discharge time period, and the current magnitude of the battery is unchanged, wherein the second charge-discharge time period comprises a first charge-discharge time period in which the current direction of the battery is unchanged, and a second charge-discharge time period in which the current direction of the battery is changed and the current magnitude of the battery is unchanged.
S302: and determining a second electric quantity accumulated value of the battery in the first charge-discharge electronic time period and a third electric quantity accumulated value of the battery in the second charge-discharge electronic time period.
S303: a voltage trend of the battery is determined based on the third voltage and the first voltage.
S304: the charge-discharge state of the battery is determined based on the voltage trend of the battery.
S305: and calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge and discharge states of the battery.
And when the current direction changes and the current magnitude does not change in the second charge-discharge duration of the battery, the battery possibly changes from the charge state to the discharge state or from the discharge state to the charge state, and the current direction of the battery changes.
The voltage trend of the battery is determined based on the third voltage of the battery determined after the first voltage and the second charge-discharge duration when the rest time of the battery does not satisfy the rest condition and the battery is in the non-rest state.
In an exemplary embodiment, a difference between the third voltage and the first voltage is calculated, and when the difference between the third voltage and the first voltage is positive, a trend of the voltage of the battery is determined to be increased, and when the difference between the third voltage and the first voltage is negative, a trend of the voltage of the battery is determined to be decreased.
Under the second preset condition, the battery is in a state of being charged and then discharged or in a state of being discharged and then charged, and the first charge-discharge time length and the second charge-discharge time length correspond to the first charge-discharge time length when the current of the battery is unchanged and the second charge-discharge time length when the current direction is changed and the current is unchanged.
And finally, based on the voltage trend of the battery under the second preset condition, determining the charge and discharge state of the battery in the second charge and discharge time period, and finally calculating the electric quantity of the battery by determining the second electric quantity accumulated value of the first charge and discharge time period and the third electric quantity accumulated value of the second charge and discharge time period.
In an exemplary embodiment, when the battery satisfies the second preset condition and the voltage trend rises during the second charge-discharge time period, it is determined that the battery is converted from the rest state to the charge state during the first charge-discharge time period and from the charge state to the discharge state during the second charge-discharge time period. At this time, a second difference between the third electric quantity integrated value and the second electric quantity integrated value is calculated, and based on the second difference, a total charge electric quantity or a discharge electric quantity of the battery in a second charge-discharge time period can be obtained. And finally, calculating the sum of the original electric quantity and the second difference value to be used as the total electric quantity of the battery.
And under the condition that the battery meets the second preset condition and the voltage trend is reduced in the second charge-discharge time period, determining that the battery is converted from a standing state to a discharge state in the first charge-discharge time period and is converted from the discharge state to a charge state in the second charge-discharge time period. At this time, a third difference between the third electric quantity accumulation value and the second electric quantity accumulation value is calculated, and based on the third difference, a total charge electric quantity or discharge electric quantity of the battery in the second charge-discharge time period can be obtained. And finally, calculating the sum of the original electric quantity and the third difference value to be used as the total electric quantity of the battery.
And the second battery accumulation amount and the third battery accumulation amount are directly judged whether to need to be reversely processed based on the charging state so as to determine the electric quantity of the battery without manual intervention when the installation of the current sensor is reversed, thereby realizing the direction self-adaption of the current sensor.
In the case that the battery does not meet the first preset condition, there are various implementations of managing the electric quantity of the battery, and in one implementation, as shown in fig. 5, the method includes the following steps:
S401: and determining a fourth voltage of the battery in a third charge-discharge duration under the condition that the battery meets a third preset condition.
The third preset condition indicates that the current direction of the battery is unchanged within a third charge-discharge duration, and the current magnitude of the battery is changed, wherein the third charge-discharge duration comprises a third charge-discharge duration in which the current magnitude of the battery is unchanged, and a fourth charge-discharge duration in which the current magnitude of the battery is changed.
S402: and determining a fourth electric quantity accumulated value of the battery in the third charge-discharge electronic time period and a fifth electric quantity accumulated value of the battery in the fourth charge-discharge electronic time period.
S403: a first current of the battery during a third charge-discharge time period and a second current of the battery during a fourth charge-discharge time period are determined.
S404: a change value of the current is determined based on the first current and the second current.
S405: a voltage trend of the battery is determined based on the fourth voltage and the first voltage.
S406: in the case where the variation value exceeds the preset variation value, the charge-discharge state of the battery is determined based on the variation value and the voltage trend.
S407: and calculating the electric quantity of the battery based on the fourth electric quantity accumulated value and the fifth electric quantity accumulated value according to the charge and discharge states of the battery.
And when the current direction is unchanged and the current magnitude is changed in the third charge-discharge time period of the battery. It is shown that the battery may be converted from high-current charge to low-current charge, or vice versa, or from high-current discharge to low-current discharge, or vice versa, without a change in current direction but with a change in current magnitude.
And determining the voltage trend of the battery based on the fourth voltage of the battery determined after the first voltage and the third charge-discharge time period when the rest time of the battery does not meet the rest condition and the battery is in the non-rest state, and the first current of the battery in the third charge-discharge time period when the current magnitude is unchanged and the second current of the battery in the fourth charge-discharge time period when the current magnitude is changed.
Exemplary: when the change value indicates that the first current is larger than the second current and the difference value between the fourth voltage and the first voltage is smaller than zero, namely the voltage trend of the battery is reduced, the charge-discharge state of the battery is determined to be changed from a static state to a high-current charge state in a third charge-discharge electronic duration, and is changed from the high-current charge state to a low-current charge state in a fourth charge-discharge electronic duration.
When the change value indicates that the first current is larger than the second current and the difference value between the fourth voltage and the first voltage is larger than zero, namely the voltage trend of the battery is raised, the charge-discharge state of the battery is determined to be changed from a rest state to a large-current discharge state in the third charge-discharge time period, and the battery is changed from the large-current discharge state to a small-current discharge state in the fourth charge-discharge time period.
When the change value indicates that the first current is smaller than the second current and the difference value between the fourth voltage and the first voltage is larger than zero, namely the voltage trend of the battery rises, the charge-discharge state of the battery is determined to be changed from a static state to a small-current charge state in the third charge-discharge electronic duration, and the small-current charge state is changed to a large-current charge state in the fourth charge-discharge electronic duration.
When the change value indicates that the first current is smaller than the second current and the difference value between the fourth voltage and the first voltage is smaller than zero, namely the voltage trend of the battery is reduced, the charge-discharge state of the battery is determined to be changed from a rest state to a small-current discharge state in the third charge-discharge electronic duration, and the small-current discharge state is changed into a large-current discharge state in the fourth charge-discharge electronic duration.
Based on the charge and discharge states of the battery, the implementation manner of calculating the electric quantity of the battery based on the fourth electric quantity accumulated value and the fifth electric quantity accumulated value may be as follows:
When the charge and discharge state of the battery is that the battery is converted from a static state to a high-current charge state in a third charge and discharge time period, the battery is converted from the high-current charge state to a low-current charge state in a fourth charge and discharge time period, or the charge and discharge state of the battery is that the battery is converted from the static state to the low-current charge state in the third charge and discharge time period, and the low-current charge state is converted to the high-current charge state in the fourth charge and discharge time period, the original electric quantity of the battery is determined; and calculating a first sum of the fourth electric quantity accumulated value and the fifth electric quantity accumulated value, and calculating a second sum of the original electric quantity and the first sum to serve as the total electric quantity of the battery.
And when the charge and discharge state of the battery is converted from the rest state to the high-current discharge state in the third charge and discharge time period, the charge and discharge state of the battery is converted from the high-current discharge state to the low-current discharge state in the fourth charge and discharge time period, or the charge and discharge state of the battery is converted from the rest state to the low-current discharge state in the third charge and discharge time period, and the low-current discharge state is converted to the high-current discharge state in the fourth charge and discharge time period, calculating a fourth difference value between the original electric quantity and the first sum to be used as the total electric quantity of the battery.
Under the condition that the current direction is changed and the current magnitude is also changed, the voltage trend of the battery after the fourth charge and discharge duration is determined based on the difference value of the fifth voltage and the first voltage and the fourth charge and discharge state of the battery in the fourth charge and discharge duration is finally determined based on the voltage trend and the difference value of the fourth current and the third current.
The charge and discharge states in the fourth charge and discharge period may include four types, the first type being: the state of charge is changed from a stationary state to a high-current state of charge, and the state of charge is changed from a high-current state of charge to a low-current state of discharge. The second is: the state of rest is changed into a high-current discharge state, and the state of high-current discharge is changed into a low-current charge state. The third is: the state of rest is changed into a small-current charge state, and the small-current charge state is changed into a large-current discharge state. The fourth is: the state of rest is changed into a small-current discharge state, and the small-current discharge state is changed into a large-current charge state.
It should be noted that, in the third charge-discharge time period and the fourth charge-discharge time period, when the current adopted in the third charge-discharge time period is greater than the current adopted in the fourth charge-discharge time period, the process of charging or discharging the third charge-discharge time period is referred to as a high-current charging state or a high-current discharging state, and the process of charging or discharging the fourth charge-discharge time period is referred to as a low-current charging state or a low-current discharging state. When the current adopted in the third charge-discharge electronic duration is smaller than the current adopted in the fourth charge-discharge electronic duration, the third charge-discharge electronic duration is called a small-current charge state or a small-current discharge state in the process of charging or discharging, and the fourth charge-discharge electronic duration is called a large-current charge state or a large-current discharge state in the process of charging or discharging.
The fourth charge-discharge time period comprises a fifth charge-discharge time period before the current is changed and before the current direction is changed, and a sixth charge-discharge time period after the current is changed and after the current direction is changed, and a sixth electric quantity accumulated value of the battery in the fifth charge-discharge time period and a seventh electric quantity accumulated value of the battery in the sixth charge-discharge time period are respectively determined. And calculating the total electric quantity of the battery based on the original electric quantity of the battery, the sixth electric quantity accumulated value and the seventh electric quantity accumulated value.
Referring to fig. 6, an embodiment of the present invention further provides a battery power management device 110 applied to the electronic device 100 shown in fig. 1, where the battery power management device 110 includes:
A determining module 111, configured to determine, when a standing time of a battery does not satisfy a standing condition and the battery is in a non-standing state, a first voltage when the battery is in the non-standing state, where the non-standing state indicates that the battery is in a charged state or a discharged state; determining a first electric quantity accumulated value and a second voltage of the battery in a first charge-discharge time period under the condition that the battery meets a first preset condition, wherein the first preset condition indicates that the current direction of the battery is unchanged and the current of the battery is unchanged in the first charge-discharge time period, and the first charge-discharge time period indicates the time period that the battery is charged or discharged; determining a voltage trend of the battery based on the first voltage and the second voltage; determining a charge-discharge state of the battery based on the voltage trend;
and the calculating module 112 is configured to calculate the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge state of the battery.
The invention also provides an electronic device 100, the electronic device 100 comprising a processor 130 and a memory 120. The memory 120 stores computer executable instructions that, when executed by the processor 130, implement the battery level management method.
The embodiment of the present invention further provides a storage medium, where a computer program is stored, and when the computer program is executed by the processor 130, the battery power management method is implemented.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present invention may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part. The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely illustrative of various embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention, and the invention is intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A method of battery power management, the method comprising:
Determining a first voltage when a battery is in a non-stationary state when the stationary time of the battery does not meet a stationary condition and the battery is in the non-stationary state, wherein the non-stationary state indicates that the battery is in a charged state or a discharged state;
Determining a first electric quantity accumulated value and a second voltage of the battery in a first charge-discharge time period under the condition that the battery meets a first preset condition, wherein the first preset condition indicates that the current direction of the battery is unchanged and the current of the battery is unchanged in the first charge-discharge time period, and the first charge-discharge time period indicates the time period that the battery is charged or discharged;
Determining a voltage trend of the battery based on the first voltage and the second voltage;
determining a charge-discharge state of the battery based on the voltage trend;
Calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge states of the battery;
Determining a third voltage of the battery within a second charge-discharge time period under the condition that the battery meets a second preset condition, wherein the second preset condition indicates that the current direction of the battery is changed within the second charge-discharge time period and the current is unchanged, and the second charge-discharge time period comprises a first charge-discharge time period in which the current direction of the battery is unchanged, and a second charge-discharge time period in which the current direction of the battery is changed and the current is unchanged;
Determining a second electric quantity accumulated value of the battery in the first charge-discharge electronic time period and a third electric quantity accumulated value of the battery in the second charge-discharge electronic time period;
determining the voltage trend of the battery based on the third voltage and the first voltage;
determining a charge-discharge state of the battery based on the voltage trend of the battery;
and calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge and discharge states of the battery.
2. The method of claim 1, wherein the step of determining a voltage trend of the battery based on the first voltage and the second voltage comprises:
Calculating a first difference between the second voltage and the first voltage;
When the first difference value is positive, determining that the voltage trend of the battery rises;
and when the first difference value is a negative value, determining that the voltage trend of the battery is reduced.
3. The method of claim 2, wherein the step of determining the charge-discharge state of the battery based on the voltage trend comprises:
Determining that a charge-discharge state of the battery is converted from a rest state to the charge state in a case where the voltage trend of the battery increases;
the step of calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge state of the battery comprises the following steps:
Determining an original electric quantity of the battery;
and taking the sum of the first electric quantity accumulated value and the original electric quantity as the total electric quantity of the battery.
4. The method of claim 2, wherein the step of determining the charge-discharge state of the battery based on the voltage trend comprises:
Determining that a charge-discharge state of the battery is converted from a rest state to the discharge state in the case that a voltage trend of the battery is reduced;
the step of calculating the electric quantity of the battery based on the first electric quantity accumulated value according to the charge and discharge state of the battery comprises the following steps:
Determining an original electric quantity of the battery;
and taking the difference value of the original electric quantity and the first electric quantity accumulated value as the total electric quantity of the battery.
5. The method of claim 1, wherein the step of determining the charge-discharge state of the battery based on the voltage trend comprises:
Determining that the battery is converted from a rest state to the charge state in the first charge-discharge electronic duration and from the charge state to the discharge state in the second charge-discharge electronic duration under the condition that the voltage trend of the battery rises, wherein the third voltage is larger than the first voltage and indicates that the voltage trend of the battery rises;
And calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge-discharge state of the battery, wherein the step comprises the following steps:
Determining an original electric quantity of the battery;
Calculating a second difference value between the third electric quantity accumulated value and the second electric quantity accumulated value;
And calculating the sum of the original electric quantity and the second difference value as the total electric quantity of the battery.
6. The method of claim 1, wherein the step of determining the charge-discharge state of the battery based on the voltage trend comprises:
Determining that the battery is converted from a rest state to the discharge state in the first charge-discharge electronic duration and from the discharge state to the charge state in the second charge-discharge electronic duration under the condition that the voltage trend of the battery is reduced, wherein the third voltage is smaller than the first voltage and indicates that the voltage trend of the battery is reduced;
And calculating the electric quantity of the battery based on the second electric quantity accumulated value and the third electric quantity accumulated value according to the charge-discharge state of the battery, wherein the step comprises the following steps:
Determining an original electric quantity of the battery;
calculating a third difference value between the third electric quantity accumulated value and the second electric quantity accumulated value;
And calculating the sum of the original electric quantity and the third difference value as the total electric quantity of the battery.
7. The method according to claim 1, wherein the method further comprises:
Determining a fourth voltage of the battery in a third charge-discharge time period under the condition that the battery meets a third preset condition, wherein the third preset condition indicates that the current direction of the battery is unchanged in the third charge-discharge time period, the current magnitude is changed, and the third charge-discharge time period comprises a third charge-discharge time period in which the current magnitude of the battery is unchanged and a fourth charge-discharge time period in which the current magnitude of the battery is changed;
Determining a fourth electric quantity accumulated value of the battery in a third charge-discharge electronic time period and a fifth electric quantity accumulated value of the battery in the fourth charge-discharge electronic time period;
determining a first current of the battery in the third charge-discharge electronic duration and a second current of the battery in the fourth charge-discharge electronic duration;
Determining a change value of a current based on the first current and the second current;
determining a voltage trend of the battery based on the fourth voltage and the first voltage;
determining a charge-discharge state of the battery based on the change value and the voltage trend, in the case that the change value exceeds a preset change value;
and calculating the electric quantity of the battery based on the fourth electric quantity accumulated value and the fifth electric quantity accumulated value according to the charge and discharge state of the battery.
8. The method according to claim 7, wherein the step of determining the charge-discharge state of the battery based on the change value and the voltage trend in the case where the change value exceeds a preset change value, comprises:
Determining that the charge-discharge state of the battery is changed from a rest state to a high-current charge state in the third charge-discharge electronic duration and from the high-current charge state to a low-current charge state in the fourth charge-discharge electronic duration when the change value indicates that the first current is larger than the second current and the voltage trend is reduced, wherein the fourth voltage is smaller than the first voltage and indicates that the voltage trend of the battery is reduced;
Determining that the charge-discharge state of the battery is changed from a rest state to a high-current discharge state in the third charge-discharge electronic duration and from the high-current discharge state to a low-current discharge state in the fourth charge-discharge electronic duration when the change value indicates that the first current is larger than the second current and the voltage trend rises, wherein the fourth voltage is larger than the first voltage and indicates that the voltage trend of the battery rises;
Determining that the charge-discharge state of the battery is changed from a rest state to the low-current charge state in the third charge-discharge sub-period and from the low-current charge state to the high-current charge state in the fourth charge-discharge sub-period when the change value indicates that the first current is smaller than the second current and the voltage trend is rising;
And under the condition that the change value indicates that the first current is smaller than the second current and the voltage trend is reduced, determining that the charge-discharge state of the battery is changed from a rest state to the low-current discharge state in the third charge-discharge electronic duration, and changing from the low-current discharge state to the high-current discharge state in the fourth charge-discharge electronic duration.
9. The method of claim 8, wherein the step of calculating the charge of the battery based on the fourth charge integration value and the fifth charge integration value according to the charge-discharge state of the battery includes:
When the charge-discharge state of the battery is that the battery is converted from a rest state to a high-current charge state in the third charge-discharge electronic duration, the battery is converted from the high-current charge state to a low-current charge state in the fourth charge-discharge electronic duration, or the battery is converted from the rest state to the low-current charge state in the third charge-discharge electronic duration, and the battery is converted from the low-current charge state to the high-current charge state in the fourth charge-discharge electronic duration, the original electric quantity of the battery is determined;
Calculating a first sum of the fourth and fifth electric quantity accumulation values;
calculating a second sum of the original electric quantity and the first sum as a total electric quantity of the battery;
and when the charge and discharge state of the battery is that the battery is converted from a static state to a high-current discharge state in the third charge and discharge time period, the battery is converted from the high-current discharge state to a low-current discharge state in the fourth charge and discharge time period, or the battery is converted from the static state to the low-current discharge state in the third charge and discharge time period, and the battery is converted from the low-current discharge state to the high-current discharge state in the fourth charge and discharge time period, calculating a fourth difference value between the original electric quantity and the first sum to be used as the total electric quantity of the battery.
10. An electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1-9 when executing the computer program.
11. A storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the method according to any of claims 1-9.
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