CN116198384A - Power battery electric quantity processing method and device and electronic equipment - Google Patents
Power battery electric quantity processing method and device and electronic equipment Download PDFInfo
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- CN116198384A CN116198384A CN202310011587.5A CN202310011587A CN116198384A CN 116198384 A CN116198384 A CN 116198384A CN 202310011587 A CN202310011587 A CN 202310011587A CN 116198384 A CN116198384 A CN 116198384A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
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Abstract
The present application relates to a power battery power processing method, apparatus, electronic device, storage medium and computer program product. The method comprises the following steps: after a battery management controller of the power battery management system is awakened, determining whether power battery data is received; if the power battery data are received, acquiring voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller; comparing the voltage standing time length with a preset voltage standing threshold value to obtain a comparison result; and acquiring the electric quantity parameter of the power battery, and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter. By adopting the method, the accuracy of determining the electric quantity of the power battery can be improved.
Description
Technical Field
The present application relates to the field of automotive technology, and in particular, to a method and apparatus for processing electric quantity of a power battery, an electronic device, a storage medium, and a computer program product.
Background
Along with the development of automobile technology, the power battery is used as a key technology related to the development prospect of automobiles, continuous breakthrough needs to be carried out, the power battery needs to be scientifically managed by means of a battery management system in the use process, the performance of the battery is fully exerted, and the service life and the efficiency of the battery are improved.
As an important parameter in the battery management system, the SOC (state of charge) directly reflects the state of the remaining battery power, and the accuracy of estimation thereof affects the control strategy and equalization strategy of the battery management system, thereby affecting the performance of the battery.
In the prior art, when the SOC is estimated, the SOC is generally estimated by combining the state of charge history value and the state of charge wake value, and the error is larger in this way of estimation.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a power battery power level processing method, apparatus, electronic device, computer-readable storage medium, and computer program product that are capable of improving the power battery power level evaluation accuracy.
In a first aspect, the present application provides a method for power cell power handling. The method comprises the following steps:
after a battery management controller of the power battery management system is awakened, determining whether power battery data is received;
if the power battery data are received, acquiring voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller;
comparing the voltage standing time length with a preset voltage standing threshold value to obtain a comparison result;
and acquiring the electric quantity parameter of the power battery, and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter.
In one embodiment, if the power battery data is not received, directly determining that the electric quantity of the power battery is an electric quantity factory value, and feeding back power battery communication fault information.
In one embodiment, the charge parameter comprises a representative cell voltage of the battery; and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter, wherein the method comprises the following steps: if the comparison result shows that the voltage standing time is greater than or equal to the preset voltage standing threshold, obtaining the representative monomer voltage; when the representative monomer voltage is in a preset monomer voltage range, acquiring a battery open-circuit voltage and charge state fitting curve; and determining the electric quantity of the power battery based on the representative single voltage, the battery open-circuit voltage and the state of charge fitting curve.
In one embodiment, the charge parameter further comprises a charge storage value; the determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter further comprises: and if the representative single voltage is not in the range of the preset voltage limit value, acquiring the electric quantity storage value, and determining the electric quantity storage value as the electric quantity of the power battery.
In one embodiment, the charge parameter comprises a charge storage value; the determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter further comprises: if the comparison result shows that the voltage standing time is smaller than the preset voltage standing threshold value, acquiring the electric quantity storage value; and if the electric quantity storage value is within the preset battery electric quantity range, determining the electric quantity storage value as the electric quantity of the power battery.
In one embodiment, the electrical quantity parameter further comprises a representative cell voltage of the battery; the determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter further comprises: if the electric quantity storage value is not in the preset battery electric quantity range, obtaining the representative single voltage of the battery, and comparing the representative single voltage with a preset voltage working range; if the representative single voltage is in the preset voltage working range, determining the electric quantity of the power battery according to the representative single voltage, the battery open-circuit voltage and the charge state fitting curve; and if the representative single voltage is not in the preset voltage working range, directly determining the electric quantity storage value as the electric quantity of the power battery.
In a second aspect, the present application further provides an electric quantity processing device of a power battery. The device comprises:
the data acquisition module is used for determining whether power battery data are received or not after a battery management controller of the power battery management system is awakened;
the data acquisition module is used for acquiring voltage standing time length which is the time length from closing to current awakening of the battery management controller if the power battery data are received;
the comparison module is used for comparing the voltage standing time with a preset voltage standing threshold value to obtain a comparison result;
and the electric quantity estimation module is used for acquiring electric quantity parameters of the power battery and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameters.
In a third aspect, the present application also provides an electronic device. The electronic device comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the power battery electric quantity processing method when executing the computer program.
In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the power cell power handling method described above.
In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of the power cell power handling method described above.
The power battery power processing method, the power battery power processing device, the electronic equipment, the storage medium and the computer program product determine whether power battery data are received or not after a battery management controller of a power battery management system is awakened; if the power battery data is received, acquiring voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller; comparing the voltage standing time with a preset voltage standing threshold value to obtain a comparison result; and acquiring the electric quantity parameter of the power battery, and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter, wherein after the battery management controller is awakened, if power electric data are received, the comparison result corresponding to the voltage standing time length is combined with the electric quantity parameter of the power battery to determine the electric quantity of the power battery, so that the accuracy of determining the electric quantity of the power battery can be improved.
Drawings
FIG. 1 is an application environment diagram of a power cell power handling method in one embodiment;
FIG. 2 is a flow chart of a power battery power handling method according to an embodiment;
FIG. 3 is a flow chart of a power battery power handling method according to another embodiment;
FIG. 4 is a block diagram of a power cell power handling device in one embodiment;
fig. 5 is an internal structural diagram of an electronic device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The power battery power processing method provided by the embodiment of the application can be applied to a power battery management system shown in fig. 1. The power battery management system may include a battery management controller 102 and a data acquisition module 104, where the data acquisition module 104 may be configured to acquire any data related to the power battery management system, and transmit the acquired data to the battery management controller 102, and the battery management controller 102 may analyze the acquired data to obtain the electric quantity of the power battery.
In one embodiment, after the battery management controller 102 of the power battery management system wakes up, the electronic device 102 determines whether power battery data is received; if the power battery data is received, acquiring voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller; comparing the voltage standing time with a preset voltage standing threshold value to obtain a comparison result; and acquiring the electric quantity parameter of the power battery, and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter.
In one embodiment, as shown in fig. 2, a power battery power processing method is provided, and the method is applied to the battery management controller 102 in fig. 1 for illustration, and includes the following steps:
step S202, when the battery management controller of the power battery management system is awakened, it is determined whether power battery data is received.
The power battery management system is a management system which can intelligently manage and maintain each battery unit, prevent the battery from being overcharged and overdischarged, prolong the service life of the battery and monitor the state of the battery, and can comprise a battery management controller which can be used for realizing the estimation of the SOC and other control functions. The battery power data refers to data related to the attribute of the power battery, and specifically, the battery power data may include, but is not limited to, power battery cell voltage, power battery cell temperature, power battery acquisition chip hardware fault information, and the like.
In one embodiment, if the power battery management system is in a power down mode, the battery management controller may remain off, and after the battery management controller wakes up, the battery management controller may determine whether power battery data is received.
Step S204, if the power battery data is received, obtaining a voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller.
The voltage standing time length is a time length required by the battery management controller from being closed to being awakened currently, specifically, the closed state may refer to that the battery management controller is in a power-down state, the awakened state may refer to that the battery management controller is in a power-up state, and the voltage standing time length may refer to a time interval from last power-down to current power-up of the battery management controller.
Specifically, if the battery management controller receives the power battery data, the battery management controller indicates that the current communication function of the power battery system is normal, and the battery management controller can acquire the voltage standing time length and then determine the electric quantity of the power battery by combining the voltage standing time length.
Wherein there may be a case where no power battery data is received after the battery management controller is awakened, and therefore, in one embodiment, further includes: if the power battery data is not received, directly determining that the electric quantity of the power battery is an electric quantity factory value, and feeding back the communication fault information of the power battery.
The power factory value may be a value set according to the conditions of different whole factories or battery factories, specifically, the power factory value may have two setting principles, the first setting principle may be that the power factory value is consistent with the SOC level when the power battery is shipped (for example, the power factory value is set to 50%), the second setting principle may be that the power factory value is considered to be displayed in a fault state generally, and in order to draw attention of a user and protect the power battery system, the power factory value at this time may be set to 0%. When the battery management controller does not receive the power battery data, the power level of the power battery may be set to 0% or 50%, and the specific power level setting of the power battery may be determined according to the actual situation.
In the above embodiment, when the battery management controller does not receive the power battery data, the power management controller directly sets the power quantity of the power battery according to the power quantity factory value, and meanwhile, the power battery communication fault information is fed back, so that the user can pay attention to a certain extent, and the safety of the power battery system is protected.
Step S206, comparing the voltage standing time with a preset voltage standing threshold value to obtain a comparison result.
The preset voltage standing threshold is a time threshold for presetting a voltage of the power battery to reach a stable state, namely a depolarization time of the power battery, specifically, when the preset voltage standing threshold is set, the preset voltage standing threshold can be set according to chemical systems of different power batteries, and the battery management controller can compare the obtained voltage standing time with the preset voltage standing threshold to obtain a comparison result, and determine whether the voltage of the power battery reaches the stable state according to the comparison result.
Step S208, the electric quantity parameters of the power battery are obtained, and the electric quantity of the power battery is determined according to the comparison result and the electric quantity parameters.
The power parameter of the power battery refers to a power parameter related to a voltage, a historical remaining power, a current remaining power, and the like of the power battery, and the power of the power battery may be a remaining power of the power battery system determined by the battery management controller according to a comparison result, the power parameter, and the like.
Specifically, after the battery management controller obtains the comparison result, the electric quantity parameter of the power battery and the like are combined to determine the electric quantity of the power battery together.
In the power battery power processing method, after a battery management controller of a power battery management system is awakened, whether power battery data are received or not is determined; if the power battery data is received, acquiring voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller; comparing the voltage standing time with a preset voltage standing threshold value to obtain a comparison result; and acquiring the electric quantity parameter of the power battery, and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter, wherein after the battery management controller is awakened, if power electric data are received, the comparison result corresponding to the voltage standing time length is combined with the electric quantity parameter of the power battery to determine the electric quantity of the power battery, so that the accuracy of determining the electric quantity of the power battery can be improved.
In one embodiment, the charge parameter includes a representative cell voltage of the battery; according to the comparison result and the electric quantity parameter, determining the electric quantity of the power battery comprises the following steps: if the voltage standing time length of the comparison result is larger than or equal to a preset voltage standing threshold value, obtaining a representative monomer voltage; when the representative monomer voltage is within a preset monomer voltage range, acquiring a battery open-circuit voltage and charge state fitting curve; and determining the electric quantity of the power battery based on the fitting curve of the representative single voltage, the battery open-circuit voltage and the state of charge.
The representative cell voltage may refer to a voltage of a cell in the battery pack, and specifically, the representative cell voltage may be a terminal voltage corresponding to a selected cell representing the SOC level of the whole battery pack; the preset cell voltage range refers to a range set according to the rationality of the cell voltage, and specifically, the cell voltage range may be composed of an upper cell voltage limit and a lower cell voltage limit, that is, no matter what state the power battery works in, the representative cell voltage should be within the lower and upper cell voltage limit ranges.
The fitting curve of the open-circuit voltage and the state of charge of the battery can refer to a fitting curve of the open-circuit voltage and the residual electric quantity of the battery, when the representative single voltage is in a preset single voltage range, the representative single voltage is in a reasonable range, and then the representative single voltage can be subjected to fitting curve lookup, so that the residual electric quantity of the battery obtained by lookup is determined as the electric quantity of the power battery.
In the above embodiment, when the voltage standing time is greater than or equal to the preset voltage threshold, the current power battery voltage is indicated to be stable and to maintain a linear relationship with the remaining power, further, when the representative monomer voltage is within the preset monomer voltage range, the representative monomer voltage is indicated to be within a reasonable voltage range, at this time, the battery management controller may perform fitting curve lookup according to the representative monomer voltage, determine the remaining power of the battery obtained by lookup as the power battery, and may accurately determine the power of the power battery.
In one embodiment, the charge parameter further comprises a charge storage value; according to the comparison result and the electric quantity parameter, determining the electric quantity of the power battery further comprises: if the representative single voltage is not in the preset voltage limit range, acquiring an electric quantity storage value, and determining the electric quantity storage value as the electric quantity of the power battery.
The battery management controller can directly determine the electric quantity storage value as the electric quantity of the power battery.
In the above embodiment, when the battery management controller determines that the representative single voltage is not within the reasonable working range, the battery management controller uses the power storage value as the power of the power battery, so that the situation that errors exist in the power battery obtained by looking up the table according to the representative single voltage at this time can be avoided, and the reliability of determining the power battery power is further improved.
In one embodiment, the charge parameter comprises a charge storage value; according to the comparison result and the electric quantity parameter, determining the electric quantity of the power battery further comprises: if the comparison result is that the voltage standing time is smaller than the preset voltage standing threshold value, acquiring an electric quantity storage value; and if the electric quantity storage value is within the preset battery electric quantity range, determining the electric quantity storage value as the electric quantity of the power battery.
The preset battery power range is a range set to indicate that the power battery is in normal operation, and if the range is exceeded, the battery is in a state of power shortage or overcharge, specifically, the preset battery power range includes an upper limit of the battery power range and a lower limit of the battery power range.
Specifically, when the battery management controller determines that the voltage standing duration is less than the preset voltage standing threshold, the voltage of the power battery at the moment is not very stable, if the battery management controller directly adopts a table look-up method representing the single voltage, the determined electric quantity of the power battery may be inaccurate, therefore, the battery management controller compares the electric quantity storage value with the preset battery electric quantity range, if the electric quantity storage value is within the electric quantity storage preset battery electric quantity range, the power battery is in a normal working range, and the electric quantity storage value is determined as the electric quantity of the power battery.
In the above embodiment, the battery management controller determines, according to the electric quantity storage value, whether the power battery is in the normal working range or not, if so, directly determines the electric quantity storage value as the electric quantity of the power battery, so that the accuracy of determining the electric quantity of the power battery can be improved to a certain extent.
In one embodiment, the electrical quantity parameter further comprises a representative cell voltage of the battery; according to the comparison result and the electric quantity parameter, determining the electric quantity of the power battery further comprises: if the electric quantity storage value is not in the preset battery electric quantity range, obtaining the representative single voltage of the battery, and comparing the representative single voltage with a preset voltage working range; if the representative single voltage is in the preset voltage working range, determining the electric quantity of the power battery according to a fitting curve of the representative single voltage, the battery open-circuit voltage and the state of charge; if the representative single voltage is not in the preset voltage working range, the electric quantity storage value is directly determined as the electric quantity of the power battery.
The preset voltage working range is a range set according to the upper limit value and the lower limit value of the single voltage.
Specifically, when the battery management controller determines that the electric quantity storage value is not within the preset battery electric quantity range, the battery management controller indicates that the power battery is not within the normal working range, and the control manager can further acquire the representative single voltage of the battery and compare the representative single voltage with the preset voltage working range; if the representative single voltage is in the preset voltage working range, determining the electric quantity of the power battery according to a fitting curve of the representative single voltage, the battery open-circuit voltage and the state of charge; if the representative single voltage is not in the preset voltage working range, the electric quantity storage value is directly determined as the electric quantity of the power battery.
In the above embodiment, the battery management controller combines the electric quantity storage value and the actual condition representing the voltage of the single cell to comprehensively determine the electric quantity of the power battery, so that the reliability of determining the electric quantity of the power battery can be improved.
In one embodiment, as shown in fig. 3, a flow chart of a power battery power processing method in one embodiment is shown:
the execution body related in the embodiment is a battery management controller in a power battery management system, and specifically, the power battery management system further includes: the power battery data acquisition module can be used for acquiring power battery data, and the power battery data comprises, but is not limited to, power battery cell voltage and power battery cell temperature; and a battery data acquisition module: and sending the power battery data acquired in real time to the BMS main controller. And a data storage module: the system is used for storing necessary information for self-checking and initializing the power battery, including but not limited to the system time at the last power-down time, the battery pack SOC at the last power-down time and the like.
Wherein, after the battery management controller is awakened, it may be determined whether power battery data is received. The power battery data includes, but is not limited to, power battery cell voltage, power battery cell temperature, and power battery acquisition chip hardware fault information, and if the power battery data is not received, it may be determined that the power battery power (i.e., the SOC initial value soc_init) maintains the factory value soc_0, and feedback the power battery communication fault information.
Specifically, the SOC factory value soc_0 depends on the conditions of different factories or battery factories, and there are two setting principles of soc_0. The first setting principle is to keep the same with the SOC level of the power battery when leaving the factory, which is equal to 50%. The second setting principle is to set soc_0 to 0% in order to draw attention of the user and protect the safety of the power battery system, considering that the factory value is usually a fault state.
If the battery management controller receives the power battery data, the battery management controller obtains the SOC value (soc_1) of the power battery pack stored in the last power-down state, and obtains the time interval t from the last power-down state to the current power-up state of the battery management controller.
Further, it is determined whether the time interval t is greater than or equal to a time threshold t_0, where the time threshold t_0 is different according to the chemical system of different power cells, and is the depolarization time of the power cells. If t is greater than or equal to t_0, judging whether the representative monomer voltage U is not in the monomer threshold range, namely, whether U is between the upper voltage limit value U_lim1 and the lower voltage limit value U_lim2.
The representative cell voltage is a terminal voltage corresponding to a cell selected to represent the SOC level of the whole battery pack, and u_lim1 and u_lim2 represent an upper limit value and a lower limit value of the cell voltage respectively, which are two threshold values that can be used to determine the rationality of the cell voltage, that is, the cell voltage needs to be within the lower limit value and the upper limit value no matter what state the cell is operated.
If the representative cell voltage is within the cell threshold range, calculating an soc_ocv (fitted curve) according to the representative cell voltage, wherein the SOC initial value soc_init obtained at this time is an SOC value obtained according to the representative cell voltage check SOC-OCV table, that is, SOC initial value soc_init=soc_ocv; if the representative cell voltage is not within the cell threshold range, the initial SOC value soc_init=soc_1
Further, for the case of t < t_0: whether the soc_1 exceeds the electric quantity range, namely whether the soc_up is larger than the SOC upper limit value or whether the soc_1 is smaller than the SOC lower limit value soc_low is judged, wherein the soc_up and the soc_low respectively represent the SOC range of the battery in normal operation, if the soc_up and the soc_low exceed the SOC range, the battery is in a state of power shortage or overcharge, and if the SOC range is not exceeded, the SOC initial value soc_init=soc_1.
If the electric quantity range is exceeded, the battery management controller judges whether the representative cell voltage U is not within the working threshold range, namely whether the representative cell voltage U is larger than the upper voltage limit value U_up or whether U is smaller than the lower voltage limit value U_low. Wherein, u_up and u_low represent the cell voltage ranges of the battery operating normally, respectively, and if the cell voltage ranges are exceeded, the battery is in a state of power shortage or overcharge.
If the representative cell voltage U is not within the operation threshold range, the SOC initial value soc_init=soc_1, and if the representative cell voltage U is within the operation threshold range, the SOC initial value soc_init=soc_ocv.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a power battery power processing device for realizing the power battery power processing method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the power processing device for one or more power batteries provided below may refer to the limitation of the power processing method for a power battery in the above description, and will not be repeated herein.
In one embodiment, as shown in fig. 4, there is provided a power battery power processing apparatus including: the device comprises a data acquisition module, a comparison module and an electric quantity estimation module, wherein:
the data receiving module 402 is configured to determine whether power battery data is received after a battery management controller of the power battery management system is awakened.
The data obtaining module 404 is configured to obtain a voltage standing duration if the power battery data is received, where the voltage standing duration is a duration from when the battery management controller is turned off to when the battery management controller is currently awakened.
And the comparison module 406 is configured to compare the voltage standing duration with a preset voltage standing threshold value, and obtain a comparison result.
The power determination module 408 is configured to obtain a power parameter of the power battery, and determine the power of the power battery according to the comparison result and the power parameter.
In one embodiment, the apparatus further comprises a data feedback module;
and the data feedback module is used for directly determining the electric quantity of the power battery as an electric quantity factory value if the data of the power battery is not received and feeding back the communication fault information of the power battery.
In one embodiment, the electric quantity determining module is further configured to obtain a representative monomer voltage if the comparison result is that the voltage standing time length is greater than or equal to a preset voltage standing threshold; when the representative monomer voltage is within a preset monomer voltage range, acquiring a battery open-circuit voltage and charge state fitting curve; and determining the electric quantity of the power battery based on the fitting curve of the representative single voltage, the battery open-circuit voltage and the state of charge.
In one embodiment, the power determining module is further configured to obtain a power storage value if the representative cell voltage is not within the preset voltage limit range, and determine the power storage value as the power of the power battery.
In one embodiment, the electric quantity determining module is further configured to obtain an electric quantity storage value if the comparison result indicates that the voltage standing duration is less than the preset voltage standing threshold; and if the electric quantity storage value is within the preset battery electric quantity range, determining the electric quantity storage value as the electric quantity of the power battery.
In one embodiment, the power determining module is further configured to obtain a representative cell voltage of the battery if the power storage value is not within a preset battery power range, and compare the representative cell voltage with a preset voltage operating range; if the representative single voltage is in the preset voltage working range, determining the electric quantity of the power battery according to a fitting curve of the representative single voltage, the battery open-circuit voltage and the state of charge; if the representative single voltage is not in the preset voltage working range, the electric quantity storage value is directly determined as the electric quantity of the power battery. The modules in the power device of the power battery can be all or partially realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or independent of a processor in the electronic device, or may be stored in software in a memory in the electronic device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, an electronic device is provided, which may be a battery management controller of a power battery management system, and an internal structure diagram thereof may be as shown in fig. 5. The electronic device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. The processor of the electronic device is used for providing computing and control capabilities, and the processor comprises a whole vehicle controller. The memory of the electronic device includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the electronic device is used for conducting wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program when executed by a processor implements a method for power battery charge processing.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the electronic device to which the present application is applied, and that a particular electronic device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, an electronic device is provided that includes a memory having a computer program stored therein and a processor that when executing the computer program performs the steps of the power cell power processing method described below.
In one embodiment, a computer readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the power cell power handling method described below.
In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, implements the steps of the power cell power handling method described above.
It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data are required to comply with the related laws and regulations and standards of the related countries and regions.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. A method for power battery power management, the method comprising:
after a battery management controller of the power battery management system is awakened, determining whether power battery data is received;
if the power battery data are received, acquiring voltage standing time length, wherein the voltage standing time length is the time length from closing to current awakening of the battery management controller;
comparing the voltage standing time length with a preset voltage standing threshold value to obtain a comparison result;
and acquiring the electric quantity parameter of the power battery, and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter.
2. The method according to claim 1, wherein the method further comprises:
if the power battery data are not received, directly determining that the electric quantity of the power battery is an electric quantity factory value, and feeding back power battery communication fault information.
3. The method of claim 1, wherein the charge parameter comprises a representative cell voltage of a battery;
and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter, wherein the method comprises the following steps:
if the comparison result shows that the voltage standing time is greater than or equal to the preset voltage standing threshold, obtaining the representative monomer voltage;
when the representative monomer voltage is in a preset monomer voltage range, acquiring a battery open-circuit voltage and charge state fitting curve;
and determining the electric quantity of the power battery based on the representative single voltage, the battery open-circuit voltage and the state of charge fitting curve.
4. A method according to claim 3, wherein the charge parameter further comprises a charge storage value;
the determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter further comprises:
and if the representative single voltage is not in the range of the preset voltage limit value, acquiring the electric quantity storage value, and determining the electric quantity storage value as the electric quantity of the power battery.
5. The method of claim 1, wherein the charge parameter comprises a charge storage value;
the determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter further comprises:
if the comparison result shows that the voltage standing time is smaller than the preset voltage standing threshold value, acquiring the electric quantity storage value;
and if the electric quantity storage value is within the preset battery electric quantity range, determining the electric quantity storage value as the electric quantity of the power battery.
6. The method of claim 5, wherein the charge parameter further comprises a representative cell voltage of a battery;
the determining the electric quantity of the power battery according to the comparison result and the electric quantity parameter further comprises:
if the electric quantity storage value is not in the preset battery electric quantity range, obtaining the representative single voltage of the battery, and comparing the representative single voltage with a preset voltage working range;
if the representative single voltage is in the preset voltage working range, determining the electric quantity of the power battery according to the representative single voltage, the battery open-circuit voltage and the charge state fitting curve;
and if the representative single voltage is not in the preset voltage working range, directly determining the electric quantity storage value as the electric quantity of the power battery.
7. An electrical power processing apparatus for a power cell, the apparatus comprising:
the data acquisition module is used for determining whether power battery data are received or not after a battery management controller of the power battery management system is awakened;
the data acquisition module is used for acquiring voltage standing time length which is the time length from closing to current awakening of the battery management controller if the power battery data are received;
the comparison module is used for comparing the voltage standing time with a preset voltage standing threshold value to obtain a comparison result;
and the electric quantity estimation module is used for acquiring electric quantity parameters of the power battery and determining the electric quantity of the power battery according to the comparison result and the electric quantity parameters.
8. 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 one of claims 1 to 6 when the computer program is executed.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011587.5A CN116198384A (en) | 2023-01-05 | 2023-01-05 | Power battery electric quantity processing method and device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310011587.5A CN116198384A (en) | 2023-01-05 | 2023-01-05 | Power battery electric quantity processing method and device and electronic equipment |
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| CN116198384A true CN116198384A (en) | 2023-06-02 |
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| CN202310011587.5A Pending CN116198384A (en) | 2023-01-05 | 2023-01-05 | Power battery electric quantity processing method and device and electronic equipment |
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- 2023-01-05 CN CN202310011587.5A patent/CN116198384A/en active Pending
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