CN114325415A - Method, device and medium for verifying electric quantity of lithium battery - Google Patents
Method, device and medium for verifying electric quantity of lithium battery Download PDFInfo
- Publication number
- CN114325415A CN114325415A CN202111679378.5A CN202111679378A CN114325415A CN 114325415 A CN114325415 A CN 114325415A CN 202111679378 A CN202111679378 A CN 202111679378A CN 114325415 A CN114325415 A CN 114325415A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- vehicle
- detected
- soc
- preset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 236
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 236
- 238000000034 method Methods 0.000 title claims abstract description 93
- 238000007599 discharging Methods 0.000 claims abstract description 92
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 28
- 238000004590 computer program Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000012795 verification Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 abstract description 33
- 230000008569 process Effects 0.000 abstract description 26
- 230000010354 integration Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The application discloses a method, a device and a medium for verifying electric quantity of a lithium battery, which comprise the following steps: and controlling the lithium battery of the vehicle to be detected to carry out cyclic charging and discharging until the discharging times reach a first preset time, and discharging until the SOC reaches a first preset value in each discharging process, wherein the charging process is not full except the first full charging process. When the discharging times reach a first preset time, the battery is controlled to be completely discharged so as to consume time, and whether the consumed time meets a first preset condition is judged so as to determine that the SOC is accurate. Therefore, the battery is circularly charged and discharged to simulate the actual application condition of the vehicle, each time of discharging is not completely discharged, each time of charging is not fully charged to simulate the condition that the vehicle cannot be fully charged and discharged in the actual application process, the battery is completely discharged to obtain the consumed time after multiple cycles, whether the consumed time meets a first preset condition is judged to determine whether the SOC of the battery is accurate, and the detection accuracy of the SOC is improved.
Description
Technical Field
The present disclosure relates to the field of battery detection, and in particular, to a method, an apparatus, and a medium for verifying electric quantity of a lithium battery.
Background
With the continuous improvement Of environmental awareness, lithium batteries are widely applied to vehicles such as industrial vehicles, and in a vehicle lithium battery management system, the accuracy Of the State Of Charge (SOC) Of the battery has an important significance, and the SOC accuracy Of the battery directly affects the control strategy Of the battery management system and directly affects the use experience Of a user. In order to detect whether the actual SOC of the lithium battery of the vehicle is consistent with the displayed SOC, that is, to detect the accuracy of the SOC of the vehicle, the full charge and full discharge mode is usually adopted, that is, the battery is fully charged, then the vehicle is used for discharging, the vehicle is used for ensuring that the battery is completely discharged at a constant current in the discharging process, during the discharging, the actual SOC of the current battery and the displayed SOC are obtained once every preset time, and whether the actual SOC is consistent with the displayed SOC is judged to determine the accuracy of the SOC in the battery system, wherein the battery SOC displayed in the battery management system is calculated by an ampere-hour integration method.
The SOC accuracy of the battery is detected in a full-charge mode, and due to the fact that the vehicle has the conditions of uphill slope, braking and the like in the using process and the condition of large power consumption, an ampere-hour integration method is used for calculating the SOC of the battery, and in addition, in the actual application of the vehicle, the SOC accuracy is poor due to the fact that the battery is not fully charged every time.
Therefore, how to improve the detection accuracy of the SOC is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The application aims at providing a method, a device and a medium for verifying electric quantity of a lithium battery, the method, the device and the medium are used for controlling a vehicle lithium battery to be detected to be subjected to cyclic charge and discharge so as to simulate the actual service condition of a vehicle, wherein the battery is discharged to a first preset value every time, all coefficients except for the first full charge of the battery are not fully charged, when the discharge frequency reaches a first preset frequency, the battery is controlled to be completely discharged, the time consumed by the complete discharge is obtained, whether the time meets a first preset condition or not is judged, if so, the SOC of the vehicle lithium battery is determined to be accurate, the error caused by the fact that the SOC of the vehicle lithium battery is detected to be accurate by fully charged is avoided, and the accuracy of detecting the SOC of the vehicle is improved.
In order to solve the above technical problem, the present application provides a method for verifying electric quantity of a lithium battery, including:
controlling the lithium battery of the vehicle to be detected to carry out cyclic charging and discharging until the discharging times reach a first preset time, wherein each discharging is carried out until the display SOC of the lithium battery of the vehicle to be detected reaches a first preset value, the first preset value is larger than zero, and the charging is not full for other times except for the first full charging;
when the discharging times reach the first preset times, controlling the lithium battery of the vehicle to be detected to be completely discharged so that the display SOC is reduced to zero from the first preset value;
acquiring the time spent on reducing the display SOC from the first preset value to zero;
and judging whether the consumed time meets a first preset condition, and if so, determining that the SOC of the lithium battery of the vehicle to be detected is accurate.
Preferably, the controlling the cycle charging and discharging of the lithium battery of the vehicle to be detected comprises:
and when the to-be-detected vehicle lithium battery is charged and the display SOC reaches a first threshold value, and/or when the to-be-detected vehicle lithium battery is discharged and the display SOC reaches a second threshold value, correcting the actual SOC of the to-be-detected vehicle lithium battery.
Preferably, the first preset condition is that the elapsed time is greater than a third threshold and less than a fourth threshold.
Preferably, the method for verifying the electric quantity of the lithium battery further includes:
controlling the lithium battery of the vehicle to be detected to perform cyclic charging and discharging to respective cut-off conditions until the cycle times reach a second preset time;
acquiring the total discharge capacity and the display SOC available capacity of the lithium battery of the vehicle to be detected each time;
judging whether the difference value of each total discharge capacity meets a second preset condition, and if so, taking the average value of each total discharge capacity as the actual SOC available capacity of the lithium battery of the vehicle to be detected;
and determining the SOC accuracy of the lithium battery of the vehicle to be detected according to the display SOC available capacity and the actual SOC available capacity.
Preferably, the method for verifying the electric quantity of the lithium battery further includes:
heating the fully charged vehicle lithium battery to be detected at a first preset temperature;
when the current temperature of the lithium battery of the vehicle to be detected reaches a second preset value, controlling the lithium battery of the vehicle to be detected to discharge until a discharge cut-off condition is reached;
acquiring relevant data of the lithium battery of the vehicle to be detected;
and judging whether the related data meet a third preset condition or not so as to determine the SOC accuracy of the lithium battery of the vehicle to be detected.
Preferably, the method for verifying the electric quantity of the lithium battery further includes:
heating the to-be-detected vehicle lithium battery which is discharged to a discharge cut-off condition at a second preset temperature;
when the current temperature of the lithium battery of the vehicle to be detected reaches a third preset value, controlling the lithium battery of the vehicle to be detected to charge until a charge cut-off condition is reached;
acquiring the relevant data of the lithium battery of the vehicle to be detected;
and judging whether the related data meet a fourth preset condition or not so as to determine the SOC accuracy of the lithium battery of the vehicle to be detected.
Preferably, the relevant data includes a discharge capacity, a charge capacity, a time spent each time the temperature rises once, an actual SOC, and the display SOC of the lithium battery of the vehicle to be detected.
In order to solve the above technical problem, the present application further provides a device for verifying electric quantity of a lithium battery, including:
the first control module is used for controlling the lithium battery of the vehicle to be detected to carry out cyclic charging and discharging until the discharging times reach a first preset time, wherein each discharging is carried out until the display SOC of the lithium battery of the vehicle to be detected reaches a first preset value, the first preset value is larger than zero, and the charging is not full of other times except for the first full charging;
the second control module is used for controlling the lithium battery of the vehicle to be detected to be completely discharged when the discharging times reach the first preset times so that the display SOC is reduced to zero from the first preset value;
the acquisition module is used for acquiring the time spent on reducing the display SOC from the first preset value to zero;
and the judging module is used for judging whether the consumed time meets a first preset condition or not, and if the consumed time meets the first preset condition, determining that the SOC of the lithium battery of the vehicle to be detected is accurate.
In order to solve the above technical problem, the present application further provides a device for verifying the electric quantity of a lithium battery, including a memory for storing a computer program;
and the processor is used for realizing the steps of the method for verifying the electric quantity of the lithium battery when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method for verifying the electric quantity of the lithium battery.
The method for verifying the electric quantity of the lithium battery comprises the following steps: and controlling the lithium battery of the vehicle to be detected to perform cyclic charging and discharging until the discharging times reach a first preset time, and discharging until the display SOC of the battery reaches a first preset value in each discharging, wherein the first preset value is larger than zero, the charging is full except for the first time, and the rest times are not full. And when the discharging times reach a first preset time, controlling the battery to be completely discharged, reducing the display SOC from a first preset value to zero at the moment, acquiring the time consumed for reducing the display SOC from the first preset value to zero, judging whether the consumed time meets a first preset condition, and if the first preset condition is met, determining that the SOC of the lithium battery of the vehicle to be detected is accurate. Therefore, according to the technical scheme provided by the invention, the condition of the vehicle in practical application is simulated by performing cyclic charging and discharging on the lithium battery of the vehicle to be detected, in addition, each discharging is not completely discharged, each charging is not completely charged so as to simulate the condition that the vehicle cannot be fully charged and discharged in practical use, the electric quantity of the battery is reduced from a first preset value to zero after multiple cycles to realize the complete discharging, the time consumed by the complete discharging is obtained, whether the consumed time meets a first preset condition or not is judged, if so, the SOC accuracy of the battery can be determined, the error caused by the traditional method that the battery is fully charged and discharged so as to detect the SOC accuracy of the battery is avoided, and the detection accuracy of the SOC is improved.
In addition, the application also provides a device and a medium for verifying the electric quantity of the lithium battery, which correspond to the method for verifying the electric quantity of the lithium battery, and the effect is the same as the above.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a flow chart of a method for verifying the electric quantity of a lithium battery according to the present invention;
fig. 2 is a structural diagram of a device for verifying the electric quantity of a lithium battery according to an embodiment of the present invention;
fig. 3 is a structural diagram of a device for verifying the electric quantity of a lithium battery according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a method, a device and a medium for verifying the electric quantity of a lithium battery, the lithium battery is controlled to be subjected to cyclic charge and discharge until the discharge frequency reaches a first preset frequency, wherein the discharge frequency reaches a first preset value every time, the charging frequency is not full except for the first full charge of other frequencies, the condition of a vehicle in actual use is further simulated, when the discharge frequency reaches the first preset frequency, the battery is controlled to be completely discharged, the time for completely discharging use is obtained, and whether the time meets a first preset condition is judged to determine whether the SOC of the lithium battery to be detected is accurate.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Along with the continuous promotion of people's environmental protection consciousness, electric vehicle is more and more, and electric vehicle wide application in various scenes, for example private car, fork truck etc. the SOC accuracy of battery is crucial to the vehicle that uses the battery, and the SOC accuracy of battery directly relates to the in service behavior of vehicle and user's experience sense. In order to detect whether the SOC of the lithium battery of the vehicle is accurate, the SOC of the battery is usually detected in a full-charge mode. The method comprises the steps of firstly, fully charging a battery, then discharging in a constant current mode by using a vehicle until a lithium battery of the vehicle is completely discharged, and in the process, obtaining the display SOC and the actual SOC of the battery once every preset time, wherein the display SOC is obtained by calculating through an ampere-hour integration method.
However, when the vehicle is used to discharge electricity, the power consumption of the vehicle may be high due to uphill driving, braking, and the like, and in such a case, errors may still occur in the conventional calculation of the displayed SOC of the vehicle, and in addition, a full-charge condition may not be ensured in actual use of the vehicle, thereby resulting in poor accuracy in detecting the SOC of the battery.
In order to improve the accuracy of verifying the electric quantity of the lithium battery, the invention provides a method for verifying the electric quantity of the lithium battery, fig. 1 is a flow chart of the method for verifying the electric quantity of the lithium battery provided by the invention, and as shown in fig. 1, the method comprises the following steps:
s10: and controlling the lithium battery of the vehicle to be detected to perform cyclic charging and discharging until the discharging times reach a first preset time, wherein each discharging is performed until the display SOC of the lithium battery of the vehicle to be detected reaches a first preset value, the first preset value is larger than zero, and the charging is not full of other times except the first full charging.
In a specific embodiment, the vehicle lithium battery detection device is connected with the vehicle lithium battery, a switch of the vehicle lithium battery detection device is closed to control the vehicle lithium battery to be detected to be charged, when the charging reaches a preset condition, the charging completion is sent to a display screen of the vehicle lithium battery detection device, so that a detection person can use the vehicle to discharge the vehicle lithium battery at the moment, and the use of the vehicle can be turning on an air conditioner, lighting, starting the vehicle to run and the like. It should be noted that the vehicle lithium battery may be a lithium battery applied to vehicles such as forklifts in the industrial field, and may also be a lithium battery applied to vehicles in other fields, and the invention is not limited thereto.
In the detection process, the vehicle to be detected is controlled to be circularly charged and discharged until the discharge frequency reaches a first preset frequency, and it needs to be explained that when the vehicle is actually used, the battery is usually charged when the vehicle is not completely discharged, that is, the vehicle cannot be started, and the battery is usually charged when some electric quantity remains, so that when the vehicle to be detected is controlled to be discharged each time, the battery is discharged until the display SOC reaches the first preset value, wherein the first preset value is greater than zero. Of course, it is easily conceivable that the battery is often used when the battery is not fully charged in the actual use process, and therefore, when the vehicle to be detected is controlled to be charged, the battery is not fully charged for other times except for the first charging to be fully charged. In order to improve the accuracy of detecting the SOC of the vehicle, the actual use condition of the vehicle is simulated as much as possible, and the cut-off electric quantity of the charging of other times except the first charging is different.
S11: and when the discharging times reach a first preset time, controlling the lithium battery of the vehicle to be detected to be completely discharged so as to display that the SOC is reduced to zero from the first preset value.
After the step S10, the lithium battery of the vehicle to be detected is cyclically charged and discharged, and when the number of times of discharge reaches a first preset number, the battery of the vehicle to be detected is controlled to be completely discharged, at this time, the first preset value of the display SOC of the lithium battery of the vehicle is reduced to zero. In actual detection, in order to control the detection duration, when the battery of the vehicle to be detected is controlled to discharge after the discharge frequency reaches the first preset frequency, the display SOC of the battery may be reduced from the first preset value to a preset value, where the preset value is smaller than the first preset value and larger than zero, for example, when the lithium battery of the vehicle to be detected discharges each time until the display SOC is 10%, and when the discharge frequency reaches the first preset frequency, the battery continues to discharge, so that the display SOC is reduced from 10% to 3%, where 3% is a preset value.
S12: and acquiring the time consumption for displaying that the SOC is reduced from the first preset value to zero.
S13: it is determined whether the elapsed time satisfies a first predetermined condition, and if the elapsed time satisfies the first predetermined condition, the process proceeds to step S14.
S14: and determining the SOC of the lithium battery of the vehicle to be detected to be accurate.
When the vehicle lithium battery detection device carries out complete discharge on the vehicle lithium battery to be detected, the time consumed for completing the complete discharge is obtained, whether the consumed time meets a first preset condition or not is judged, and if the first preset condition is met, the SOC of the battery of the vehicle to be detected can be determined to be accurate. The first preset condition may be that the elapsed time is a fixed value, for example, a fixed value of 10 minutes, and when the elapsed time is 10 minutes, the SOC of the vehicle to be detected is determined to be accurate. In the actual detection, in order to improve the detection accuracy, the first preset condition is preferably set to take more time than the third threshold and less than the fourth threshold.
In order to further improve the detection accuracy of the SOC of the vehicle lithium battery, when the vehicle lithium battery detection device controls the vehicle to be detected to perform cyclic charging and discharging, the vehicle lithium battery to be detected is charged, and when the SOC reaches the first threshold value, the actual SOC of the vehicle lithium battery to be detected is corrected.
Certainly, the verification method for the electric quantity of the lithium battery provided by the invention can also determine the accuracy of the SOC of the lithium battery of the vehicle to be detected by detecting the available capacity of the SOC, control the lithium battery of the vehicle to be detected to carry out cyclic charge and discharge to respective cut-off conditions until the cycle number reaches a second preset number, obtain the total discharge capacity and the display available capacity of the SOC of the lithium battery of the vehicle to be detected each time, judge whether the difference value of the total discharge capacity meets the second preset condition, and if so, take the average value of the total discharge capacity as the actual available capacity of the SOC of the lithium battery of the vehicle to be detected, thereby determining the accuracy of the SOC of the lithium battery of the vehicle to be detected according to the display available capacity of the SOC and the actual available capacity of the SOC.
In consideration of the fact that the power consumption situation of the vehicle is different from that of the vehicle at normal temperature when the vehicle is used in different temperature environments, the method for verifying the electric quantity of the lithium battery can detect the accuracy of the SOC at the preset temperature. The method comprises the steps of heating a fully charged vehicle lithium battery to be detected at a first preset temperature, controlling the vehicle lithium battery to be detected to discharge until a discharge cutoff condition is reached when the current temperature of the vehicle lithium battery to be detected reaches a second preset value, obtaining relevant data of the vehicle lithium battery to be detected, and judging whether the relevant data meet a third preset condition or not so as to determine the SOC accuracy of the vehicle lithium battery to be detected. It should be noted that the relevant data includes the discharge capacity of the lithium battery of the vehicle to be detected, the time consumed for each temperature rise, the actual SOC and the display SOC.
In addition, under a second preset temperature, the to-be-detected vehicle lithium battery which is discharged to a discharging stop condition is heated, when the current temperature of the to-be-detected vehicle lithium battery reaches a third preset value, the to-be-detected vehicle lithium battery is controlled to be charged until the current temperature reaches the charging stop condition, relevant data of the to-be-detected vehicle lithium battery are obtained, and whether the relevant data meet a fourth preset condition is judged, so that the SOC accuracy of the to-be-detected vehicle lithium battery is determined. It should be noted that the relevant data includes the charging capacity of the lithium battery of the vehicle to be detected, the time spent each time the temperature rises, the actual SOC and the display SOC.
It should be noted that the first preset temperature and the second preset temperature may be any temperature, but in the actual use process of the vehicle, the low temperature has a large influence on the lithium battery of the vehicle, and therefore, both the first preset temperature and the second preset temperature of the present invention are less than zero degrees centigrade.
In addition, it should be noted that the method for verifying the electric quantity of the lithium battery provided by the present invention can be applied to the verification of the vehicle lithium battery in the industrial field, and certainly can also be applied to the verification of the vehicle lithium battery in other fields, and the present invention is not limited thereto.
The method for verifying the electric quantity of the lithium battery provided by the embodiment of the invention comprises the following steps: and controlling the lithium battery of the vehicle to be detected to perform cyclic charging and discharging until the discharging times reach a first preset time, and discharging until the display SOC of the battery reaches a first preset value in each discharging, wherein the first preset value is larger than zero, the charging is full except for the first time, and the rest times are not full. And when the discharging times reach a first preset time, controlling the battery to be completely discharged, reducing the display SOC from a first preset value to zero at the moment, acquiring the time consumed for reducing the display SOC from the first preset value to zero, judging whether the consumed time meets a first preset condition, and if the first preset condition is met, determining that the SOC of the lithium battery of the vehicle to be detected is accurate. Therefore, according to the technical scheme provided by the invention, the condition of the vehicle in practical application is simulated by performing cyclic charging and discharging on the lithium battery of the vehicle to be detected, in addition, each discharging is not completely discharged, each charging is not completely charged so as to simulate the condition that the vehicle cannot be fully charged and discharged in practical use, the electric quantity of the battery is reduced from a first preset value to zero after multiple cycles to realize the complete discharging, the time consumed by the complete discharging is obtained, whether the consumed time meets a first preset condition or not is judged, if so, the SOC accuracy of the battery can be determined, the error caused by the traditional method that the battery is fully charged and discharged so as to detect the SOC accuracy of the battery is avoided, and the detection accuracy of the SOC is improved.
On the basis of the embodiment, in order to further improve the accuracy of detecting the SOC of the vehicle lithium battery, when the vehicle lithium battery detection device controls the vehicle lithium battery to be detected to perform cyclic charging and discharging, if the SOC reaches a first threshold value in the charging process and/or the SOC reaches a second threshold value in the discharging process, the vehicle lithium battery detection device controls the battery to be corrected, wherein the SOC of the actual battery is corrected by combining an ampere-hour integration method and Kalman filtering in the correcting process. The ampere-hour integration method is characterized in that the battery capacity is calculated by integrating current with time, the used part is subtracted from the available capacity corresponding to the current temperature and the current in a database, the remaining SOC of the battery is further obtained, and when the SOC displayed by the battery of the vehicle to be detected in the cyclic charging and discharging process meets the condition, the Kalman filtering corrects the SOC of the battery by taking the current voltage of the battery as a correction point.
It can be understood that, the great condition of battery power consumption such as uphill, brake exists in the use of vehicle, simultaneously, causes actual SOC and demonstration SOC easily under this condition and has the error, does not revise SOC for a long time, and the error can be bigger and bigger, and then the rate of accuracy is low when leading to adopting full-filling mode to detect vehicle lithium cell SOC. Therefore, the method for verifying the electric quantity of the lithium battery provided by the invention has the advantages that when the vehicle lithium battery detection device controls the vehicle lithium battery to be detected to carry out cyclic charging and discharging, if SOC meets the condition during charging and discharging, the vehicle lithium battery detection device controls the battery to correct, namely, the scheme of the invention simulates the actual use condition of the vehicle during cyclic charging and discharging, during charging, if the SOC is shown to reach a first threshold, the battery is corrected, for example, if the first threshold is 90%, when the SOC reaches 90% during charging, it may be possible that the vehicle is in actual use, the power consumption is larger when ascending and braking, so that an error is generated between the actual SOC and the display SOC, the actual SOC of charging does not reach 90 percent at the moment, the vehicle lithium battery detection device corrects the vehicle lithium battery so that the actual SOC is the same as the displayed SOC.
Similarly, when the vehicle lithium battery is discharged, for example, the second threshold value is 10%, when the display SOC of the charging reaches 10%, the actual SOC is not consistent with the display SOC due to an error caused by actually using the vehicle, and when the display SOC reaches 10%, the vehicle lithium battery detection device corrects the battery so that the actual SOC and the display SOC are consistent.
When the discharging times reach a first preset time, the vehicle lithium battery detection device controls the battery to be completely discharged, the current display SOC of the battery is reduced to zero, the time consumed by the complete discharging of the battery is obtained, whether the time consumed meets a first preset condition or not is judged, and if the first preset condition is met, the SOC of the vehicle lithium battery to be detected is determined to be accurate. Notably, in order to ensure the accuracy and reliability of the conclusion, the first preset condition is set such that the elapsed time is greater than the third threshold value and less than the fourth threshold value, for example, when the elapsed time is greater than 20 minutes and less than 25 minutes, the SOC of the vehicle lithium battery to be detected is determined to be accurate.
According to the method for verifying the electric quantity of the lithium battery, provided by the embodiment of the invention, in the process of circularly charging and discharging the lithium battery of the vehicle to be detected, if the SOC meets the conditions in the charging and discharging processes, the actual SOC of the battery is controlled to be corrected, so that the error generated in the actual use process of the vehicle is corrected, in addition, after the battery is circularly discharged to the preset times, the time consumed by the battery for completely discharging is obtained, and if the consumed time is more than a third threshold value and less than a fourth threshold value, the SOC of the lithium battery of the vehicle to be detected is determined to be accurate, so that the accuracy and the reliability of detecting the SOC of the lithium battery of the vehicle are improved.
In particular embodiments, in addition to detecting the SOC accuracy of the vehicle lithium battery by cycling charging and discharging, the accuracy of the battery SOC may also be detected by detecting the available capacity of the SOC. The vehicle lithium battery detection device controls the vehicle to be detected to carry out cyclic charging and discharging until the respective stop conditions are met and the cycle number reaches a second preset number, acquiring the total discharge capacity and the display SOC capacity of the battery in the cyclic charge and discharge processes, judging whether the difference value between the discharge capacities meets a second preset condition, if so, the average value of the total discharge capacities is used as the actual SOC available capacity, and it should be noted that the SOC available capacity is actually displayed once, and further, it should be noted that, when the battery is discharged, the vehicle lithium battery detection device discharges at a constant current speed, the constant current speed is not limited in the present invention, and after each charge to the charge cut-off condition, the battery is discharged after being left standing for a predetermined time, and it is understood that the charge and discharge cutoff conditions are both times specified by the manufacturer. For ease of understanding, the following will be exemplified.
For example, after the battery is charged to the charge cut-off condition, the battery is left to stand for a preset time, which may be half an hour, 1 hour or a time specified by the manufacturer, and the present invention is not limited thereto, and as described herein, by taking a half hour as an example, after the charging is completed and the battery is left to stand for a half hour, the vehicle lithium battery is discharged at a current rate of 0.5C, and the total capacity C1 of the battery is recorded until the discharge cut-off condition, and the actual SOC available capacity of the vehicle lithium battery is obtained, and then the charging is continued until the charge cut-off condition, and the total discharge capacity C2 is obtained, such that the battery is cyclically charged and discharged until a second preset number of times, for example, the second preset number of times is 3, the total discharge capacities obtained in three times are C1, C2 and C3, respectively, and if the difference between C1, C2 and C3 satisfies the second preset condition, for example, the difference between C1, C2 and C3 is less than 5%, the preset condition is met, or the difference value is within a certain interval range as the meeting condition, the comparison is not limited in the invention, and it can be understood that the SOC of the battery is expressed by percentage, so the difference value is also calculated and explained by percentage.
If the difference values of C1, C2 and C3 satisfy the second preset condition, taking the average value of C1, C2 and C3 as the actual available SOC capacity, that is, the actual available SOC capacity is 1/3 (C1+ C2+ C3), and finally, determining whether the SOC of the vehicle to be detected is accurate according to whether the actual available SOC capacity and the display available SOC capacity are consistent, if so, the SOC is accurate, and if not, the SOC is inaccurate.
It should be noted that if the difference values of C1, C2 and C3 do not satisfy the second preset condition, which indicates that there is an error in the currently acquired data, the vehicle to be detected is repeatedly charged and discharged to acquire new three parameters until the error between the three parameters satisfies the second preset condition. Of course, it should be noted that the method for testing the available capacity of the vehicle lithium battery SOC provided by the present embodiment is only suitable for use at normal temperature.
According to the verification method for the electric quantity of the lithium battery, provided by the embodiment of the invention, the vehicles to be detected are controlled to carry out cyclic charging and discharging until the respective cut-off conditions are met and the cyclic times reach the second preset times, the total discharging capacity and the display SOC available capacity of the lithium battery of the vehicle to be detected each time are obtained in the cyclic charging and discharging, whether the difference value of the total discharging capacities meets the second preset conditions is judged, if yes, the average value of the total discharging capacities is used as the actual SOC available capacity of the lithium battery of the vehicle to be detected, and finally the SOC accuracy of the lithium battery of the vehicle to be detected is determined according to the display SOC available capacity and the actual SOC available capacity, so that the SOC accuracy is further determined according to the SOC available capacity of the vehicle to be detected, and the reliability of the detection result is improved.
It can be understood that, in the practical use of the vehicle, besides the normal temperature, many cases are at a low temperature, and the error condition generated by the battery SOC is different when the vehicle is running at the low temperature and when the vehicle is running at the normal temperature, the method for verifying the electric quantity of the lithium battery provided by the embodiment of the invention further comprises the step of detecting at the low temperature, and detecting the discharge available capacity of the vehicle lithium battery SOC at the low temperature to detect the battery accuracy.
The method comprises the steps of heating a fully charged vehicle lithium battery to be detected at a first preset temperature, wherein the heating process is equivalent to a discharging process, and when the current temperature of the vehicle lithium battery to be detected reaches a second preset value, controlling the vehicle lithium battery to be detected to discharge until a discharging cut-off condition is reached. At the moment, the relevant data of the lithium battery of the vehicle to be detected is obtained, and whether the relevant data meet a third preset condition is judged so as to determine the SOC accuracy of the lithium battery of the vehicle to be detected. The relevant data comprises the discharge capacity, the charge capacity, the time consumed when the temperature rises once, the actual SOC and the display SOC of the lithium battery of the vehicle to be detected. For ease of understanding, the following description will be made by way of example.
For example, the first preset temperature is-20 ℃ (DEG C), the vehicle lithium battery to be detected is placed in an incubator with the temperature of-20 ℃, when the temperature deviation in the incubator is within 2 ℃, the battery of the vehicle to be detected is fully charged through the vehicle lithium battery detection device, and after the battery is fully charged, the vehicle lithium battery detection device carries out pure heating on the vehicle lithium battery. And when the current temperature of the vehicle lithium battery reaches a second preset value, for example, the second preset value is-10 ℃, namely when the temperature of the vehicle lithium battery reaches-10 ℃, controlling the vehicle lithium battery to discharge until a discharge cut-off condition, and acquiring the discharge capacity of the primary battery when the display SOC of the battery changes by 5%. And at the moment, if the time consumed by the temperature rise of the battery below-10 ℃ per second is not more than 8 minutes, the deviation between the actual SOC and the display SOC in the whole process is within 5 percent, and when the total SOC discharge capacity of the lithium battery of the vehicle to be detected, which is obtained at the temperature of-20 ℃, is more than 70 percent of the available SOC capacity of the battery at normal temperature, the SOC of the vehicle to be detected is determined to be accurate. It should be noted that a temperature sensor is disposed near or on the lithium battery of the vehicle to obtain the current temperature of the lithium battery of the vehicle to be detected.
In addition, the method for verifying the electric quantity of the lithium battery can also detect the accuracy of the SOC of the battery by acquiring the discharge available capacity of the SOC of the lithium battery of the vehicle under the low-temperature condition, namely, the lithium battery of the vehicle to be detected which is discharged to the discharge cut-off condition is heated at the second preset temperature, and when the current temperature of the lithium battery of the vehicle to be detected reaches the third preset value, the lithium battery of the vehicle to be detected is controlled to be charged until the charge cut-off condition is reached. At the moment, the relevant data of the lithium battery of the vehicle to be detected is obtained, and whether the relevant data meets a fourth preset condition is judged so as to determine the SOC accuracy of the lithium battery of the vehicle to be detected. Also, for ease of understanding, the following description will be made by way of example.
For example, the second preset temperature is-10 ℃, the vehicle lithium battery to be detected is discharged at normal temperature until the discharge cutoff condition is reached, then the vehicle lithium battery to be detected is placed in a thermostat with the temperature of-10 ℃, when the temperature deviation in the thermostat is within 2 ℃, the battery of the vehicle to be detected is charged through a vehicle lithium battery detection device, the temperature of the battery rises in the charging process, the current time when the temperature of the vehicle lithium battery rises once is obtained so as to obtain the time consumed when the temperature rises once per liter, and the actual SOC and the display SOC are obtained.
And when the current temperature of the lithium battery of the vehicle to be detected reaches a third preset value, for example, 0 ℃, continuing to charge the battery until the battery is charged to a charging cut-off condition, and acquiring the discharge capacity of the battery once when the display SOC of the battery changes by 5%. And at the moment, if the time consumed by the temperature of the battery below 0 ℃ for every 1 ℃ rise is not more than 8 minutes, the deviation between the actual SOC and the display SOC in the whole process is within 5%, and when the SOC charge capacity of the lithium battery of the vehicle to be detected, which is acquired at the temperature of minus 10 ℃, is more than 70% of the SOC available capacity of the battery at normal temperature, the SOC of the vehicle to be detected is determined to be accurate.
It should be noted that the present invention is not limited to the first preset temperature and the second preset temperature, but both the first preset temperature and the second preset temperature are less than 0 ℃.
According to the method for verifying the electric quantity of the lithium battery, provided by the embodiment of the invention, whether the SOC of the battery is accurate is determined by acquiring and judging whether the relevant data of the battery of the vehicle to be detected meets the preset condition under the low-temperature condition, so that the reliability of the detection result is further improved.
In the above embodiments, the method for verifying the electric quantity of the lithium battery is described in detail, and the application also provides embodiments corresponding to the device for verifying the electric quantity of the lithium battery. It should be noted that the present application describes the embodiments of the apparatus portion from two perspectives, one is based on the functional module, and the other is based on the hardware structure.
Fig. 2 is a structural diagram of a device for verifying an electric quantity of a lithium battery according to an embodiment of the present invention, and as shown in fig. 2, the device includes:
the first control module 10 is configured to control the to-be-detected vehicle lithium battery to perform cyclic charging and discharging until the number of times of discharging reaches a first preset number, where each discharging is performed until the display SOC of the to-be-detected vehicle lithium battery reaches a first preset value, and the first preset value is greater than zero, and the remaining times of charging are not full except for the first full charging.
And the second control module 11 is used for controlling the lithium battery of the vehicle to be detected to be completely discharged so as to display that the SOC is reduced to zero from the first preset value when the discharging times reach the first preset times.
And an obtaining module 12, configured to obtain a time consumed for displaying that the SOC is reduced from the first preset value to zero.
And the judging module 13 is configured to judge whether the elapsed time meets a first preset condition, and if the elapsed time meets the first preset condition, determine that the SOC of the lithium battery of the vehicle to be detected is accurate.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The verification device for the electric quantity of the lithium battery provided by the embodiment of the invention comprises: and controlling the lithium battery of the vehicle to be detected to perform cyclic charging and discharging until the discharging times reach a first preset time, and discharging until the display SOC of the battery reaches a first preset value in each discharging, wherein the first preset value is larger than zero, the charging is full except for the first time, and the rest times are not full. And when the discharging times reach a first preset time, controlling the battery to be completely discharged, reducing the display SOC from a first preset value to zero at the moment, acquiring the time consumed for reducing the display SOC from the first preset value to zero, judging whether the consumed time meets a first preset condition, and if the first preset condition is met, determining that the SOC of the lithium battery of the vehicle to be detected is accurate. Therefore, according to the technical scheme provided by the invention, the condition of the vehicle in practical application is simulated by performing cyclic charging and discharging on the lithium battery of the vehicle to be detected, in addition, each discharging is not completely discharged, each charging is not completely charged so as to simulate the condition that the vehicle cannot be fully charged and discharged in practical use, the electric quantity of the battery is reduced from a first preset value to zero after multiple cycles to realize the complete discharging, the time consumed by the complete discharging is obtained, whether the consumed time meets a first preset condition or not is judged, if so, the SOC accuracy of the battery can be determined, the error caused by the traditional method that the battery is fully charged and discharged so as to detect the SOC accuracy of the battery is avoided, and the detection accuracy of the SOC is improved.
Fig. 3 is a structural diagram of a device for verifying the electric quantity of a lithium battery according to another embodiment of the present invention, and as shown in fig. 3, the device for verifying the electric quantity of a lithium battery includes: a memory 20 for storing a computer program;
the processor 21 is configured to implement the steps of the method for verifying the battery capacity of the lithium battery as mentioned in the above embodiments when executing the computer program.
The verification device for the electric quantity of the lithium battery provided by the embodiment can include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The Processor 21 may be implemented in at least one hardware form of a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with an image processor (GPU), and the GPU is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 21 may further include an Artificial Intelligence (AI) processor for processing computing operations related to machine learning.
The memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing the following computer program 201, wherein after being loaded and executed by the processor 21, the computer program can implement the relevant steps of the method for verifying the electric quantity of the lithium battery disclosed in any one of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, Windows, Unix, Linux, and the like. The data 203 may include, but is not limited to, relevant data involved in a method of verifying the charge of a lithium battery, and the like.
In some embodiments, the device for verifying the electric quantity of the lithium battery further includes a display screen 22, an input/output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.
It will be appreciated by those skilled in the art that the configuration shown in fig. 3 does not constitute a limitation of the means for verifying the charge of a lithium battery and may include more or less components than those shown.
The device for verifying the electric quantity of the lithium battery comprises a memory and a processor, wherein when the processor executes a program stored in the memory, the following method can be realized: provided is a method for verifying electric quantity of a lithium battery.
According to the verification device for the electric quantity of the lithium battery, provided by the embodiment of the invention, the condition of a vehicle in practical application is simulated by circularly charging and discharging the lithium battery of the vehicle to be detected, in addition, each time of discharging is not completely discharged, and each time of charging is not completely charged, so that the condition that the vehicle cannot be fully charged and discharged in practical use is simulated, the electric quantity of the battery is reduced from a first preset value to zero after multiple cycles to realize complete discharging, the time consumed by complete discharging is obtained, whether the consumed time meets a first preset condition or not is judged, if yes, the SOC of the battery can be determined to be accurate, the error caused when the SOC accuracy of the battery is detected by adopting full charging and discharging in the prior art is avoided, and the detection accuracy of the SOC is improved.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The method, the device and the medium for verifying the electric quantity of the lithium battery provided by the application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, 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. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A method for verifying the electric quantity of a lithium battery is characterized by comprising the following steps:
controlling the lithium battery of the vehicle to be detected to carry out cyclic charging and discharging until the discharging times reach a first preset time, wherein each discharging is carried out until the display SOC of the lithium battery of the vehicle to be detected reaches a first preset value, the first preset value is larger than zero, and the charging is not full for other times except for the first full charging;
when the discharging times reach the first preset times, controlling the lithium battery of the vehicle to be detected to be completely discharged so that the display SOC is reduced to zero from the first preset value;
acquiring the time spent on reducing the display SOC from the first preset value to zero;
and judging whether the consumed time meets a first preset condition, and if so, determining that the SOC of the lithium battery of the vehicle to be detected is accurate.
2. The method for verifying the electric quantity of the lithium battery as claimed in claim 1, wherein the step of controlling the lithium battery of the vehicle to be detected to be charged and discharged in a cycle comprises the following steps:
and when the to-be-detected vehicle lithium battery is charged and the display SOC reaches a first threshold value, and/or when the to-be-detected vehicle lithium battery is discharged and the display SOC reaches a second threshold value, correcting the actual SOC of the to-be-detected vehicle lithium battery.
3. The method as claimed in claim 1, wherein the first predetermined condition is that the elapsed time is greater than a third threshold and less than a fourth threshold.
4. The method for verifying the charge of a lithium battery as claimed in claim 1, further comprising:
controlling the lithium battery of the vehicle to be detected to perform cyclic charging and discharging to respective cut-off conditions until the cycle times reach a second preset time;
acquiring the total discharge capacity and the display SOC available capacity of the lithium battery of the vehicle to be detected each time;
judging whether the difference value of each total discharge capacity meets a second preset condition, and if so, taking the average value of each total discharge capacity as the actual SOC available capacity of the lithium battery of the vehicle to be detected;
and determining the SOC accuracy of the lithium battery of the vehicle to be detected according to the display SOC available capacity and the actual SOC available capacity.
5. The method for verifying the charge of a lithium battery as claimed in claim 4, further comprising:
heating the fully charged vehicle lithium battery to be detected at a first preset temperature;
when the current temperature of the lithium battery of the vehicle to be detected reaches a second preset value, controlling the lithium battery of the vehicle to be detected to discharge until a discharge cut-off condition is reached;
acquiring relevant data of the lithium battery of the vehicle to be detected;
and judging whether the related data meet a third preset condition or not so as to determine the SOC accuracy of the lithium battery of the vehicle to be detected.
6. The method for verifying the charge of a lithium battery as claimed in claim 4, further comprising:
heating the to-be-detected vehicle lithium battery which is discharged to a discharge cut-off condition at a second preset temperature;
when the current temperature of the lithium battery of the vehicle to be detected reaches a third preset value, controlling the lithium battery of the vehicle to be detected to charge until a charge cut-off condition is reached;
acquiring the relevant data of the lithium battery of the vehicle to be detected;
and judging whether the related data meet a fourth preset condition or not so as to determine the SOC accuracy of the lithium battery of the vehicle to be detected.
7. The method for verifying the electric quantity of the lithium battery as claimed in claim 5 or 6, wherein the related data comprises the discharge capacity, the charge capacity, the time spent each time the temperature rises by one degree, the actual SOC and the display SOC of the lithium battery of the vehicle to be detected.
8. A verification device for electric quantity of a lithium battery is characterized by comprising:
the first control module is used for controlling the lithium battery of the vehicle to be detected to carry out cyclic charging and discharging until the discharging times reach a first preset time, wherein each discharging is carried out until the display SOC of the lithium battery of the vehicle to be detected reaches a first preset value, the first preset value is larger than zero, and the charging is not full of other times except for the first full charging;
the second control module is used for controlling the lithium battery of the vehicle to be detected to be completely discharged when the discharging times reach the first preset times so that the display SOC is reduced to zero from the first preset value;
the acquisition module is used for acquiring the time spent on reducing the display SOC from the first preset value to zero;
and the judging module is used for judging whether the consumed time meets a first preset condition or not, and if the consumed time meets the first preset condition, determining that the SOC of the lithium battery of the vehicle to be detected is accurate.
9. The device for verifying the electric quantity of the lithium battery is characterized by comprising a memory, a storage unit and a control unit, wherein the memory is used for storing a computer program;
a processor for implementing the steps of the method for verifying the charge of a lithium battery as claimed in any one of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for verifying the charge level of a lithium battery as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679378.5A CN114325415B (en) | 2021-12-31 | 2021-12-31 | Verification method, device and medium for lithium battery electric quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679378.5A CN114325415B (en) | 2021-12-31 | 2021-12-31 | Verification method, device and medium for lithium battery electric quantity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114325415A true CN114325415A (en) | 2022-04-12 |
| CN114325415B CN114325415B (en) | 2023-11-21 |
Family
ID=81022340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111679378.5A Active CN114325415B (en) | 2021-12-31 | 2021-12-31 | Verification method, device and medium for lithium battery electric quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114325415B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022518A1 (en) * | 2000-03-13 | 2001-09-20 | Kaoru Asakura | Capacity estimation method, degradation estimation method and degradation estimation apparatus for lithium-ion cells, and lithium-ion batteries |
| JP2011182526A (en) * | 2010-02-26 | 2011-09-15 | Sanyo Electric Co Ltd | Charge and discharge control system for battery and electric vehicle mounting the same, and charge and discharge control method for battery |
| CN107076803A (en) * | 2014-11-19 | 2017-08-18 | 株式会社杰士汤浅国际 | The managing device of secondary cell and the management method of secondary cell |
| CN108370169A (en) * | 2015-12-18 | 2018-08-03 | 奥克斯能源有限公司 | Lithium-sulfur cell manages system |
| CN109435760A (en) * | 2018-09-25 | 2019-03-08 | 杭叉集团股份有限公司 | AGV fork truck recharging control device and method |
| CN109975708A (en) * | 2017-12-26 | 2019-07-05 | 郑州宇通客车股份有限公司 | A kind of automatic on-line modification method of battery SOC |
| JP2020043084A (en) * | 2016-01-15 | 2020-03-19 | 株式会社Ｇｓユアサ | Electricity storage element management device, electricity storage element module, vehicle, and electricity storage element management method |
| KR102140011B1 (en) * | 2019-10-31 | 2020-07-31 | 국민대학교 산학협력단 | Method for managing battery and battery management system |
| CN111562507A (en) * | 2020-04-30 | 2020-08-21 | 歌尔科技有限公司 | Battery electric quantity display method and device, electronic equipment and storage medium |
| CN113212244A (en) * | 2021-04-29 | 2021-08-06 | 浙江吉利控股集团有限公司 | New energy vehicle power battery life prediction method and system |
-
2021
- 2021-12-31 CN CN202111679378.5A patent/CN114325415B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022518A1 (en) * | 2000-03-13 | 2001-09-20 | Kaoru Asakura | Capacity estimation method, degradation estimation method and degradation estimation apparatus for lithium-ion cells, and lithium-ion batteries |
| JP2011182526A (en) * | 2010-02-26 | 2011-09-15 | Sanyo Electric Co Ltd | Charge and discharge control system for battery and electric vehicle mounting the same, and charge and discharge control method for battery |
| CN107076803A (en) * | 2014-11-19 | 2017-08-18 | 株式会社杰士汤浅国际 | The managing device of secondary cell and the management method of secondary cell |
| CN108370169A (en) * | 2015-12-18 | 2018-08-03 | 奥克斯能源有限公司 | Lithium-sulfur cell manages system |
| JP2020043084A (en) * | 2016-01-15 | 2020-03-19 | 株式会社Ｇｓユアサ | Electricity storage element management device, electricity storage element module, vehicle, and electricity storage element management method |
| CN109975708A (en) * | 2017-12-26 | 2019-07-05 | 郑州宇通客车股份有限公司 | A kind of automatic on-line modification method of battery SOC |
| CN109435760A (en) * | 2018-09-25 | 2019-03-08 | 杭叉集团股份有限公司 | AGV fork truck recharging control device and method |
| KR102140011B1 (en) * | 2019-10-31 | 2020-07-31 | 국민대학교 산학협력단 | Method for managing battery and battery management system |
| CN111562507A (en) * | 2020-04-30 | 2020-08-21 | 歌尔科技有限公司 | Battery electric quantity display method and device, electronic equipment and storage medium |
| CN113212244A (en) * | 2021-04-29 | 2021-08-06 | 浙江吉利控股集团有限公司 | New energy vehicle power battery life prediction method and system |
Non-Patent Citations (1)
| Title |
|---|
| 周頔: "电动汽车锂电池健康状态在线估算方法研究", 《中国博士学位论文全文数据库 (工程科技Ⅱ辑)》, pages 035 - 70 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114325415B (en) | 2023-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110011374B (en) | Control method and system for battery charging and discharging current and terminal equipment | |
| CN110146816B (en) | Method, device and equipment for determining remaining charging time of battery and storage medium | |
| WO2018113773A1 (en) | Method and device for detecting battery micro-short circuit | |
| US9287723B2 (en) | Cell balancing apparatus and method using a voltage variation pattern of each cell to estimate an open circuit voltage value for each cell | |
| CN102119338B (en) | Apparatus and method for estimating state of health of battery based on battery voltage variation pattern | |
| EP2963433A1 (en) | Method and apparatus for estimating state of battery | |
| CN109991554B (en) | Battery electric quantity detection method and device and terminal equipment | |
| CN109466372B (en) | Charging remaining time calculation method and device and storage medium | |
| CN111422070A (en) | Method and device for detecting endurance mileage and new energy vehicle | |
| CN103901347A (en) | Method for display of battery level and terminal | |
| CN113093027B (en) | Battery SOC calibration method, device, system, medium and program product | |
| CN115616410A (en) | Battery abnormal self-discharge early warning method and system, electronic equipment and storage medium | |
| CN115995628B (en) | Recovery processing method and device for retired lithium ion battery | |
| WO2019230131A1 (en) | Charge control device, transport device, and program | |
| JP7038530B2 (en) | Device condition detectors, power systems and automobiles | |
| CN114137415B (en) | Method and device for detecting heating value of battery pack, vehicle and storage medium | |
| CN112912745A (en) | Method for determining the state of charge and the state of ageing of an electrochemical cell from an open circuit voltage diagram | |
| CN108344952B (en) | Battery electric quantity calculation method and device | |
| CN113447821A (en) | Method for estimating state of charge of battery | |
| CN110907838A (en) | Battery working condition simulation test method, electronic equipment and computer readable storage medium | |
| WO2017002953A1 (en) | Data extracting device, data extracting method, and data extracting program | |
| CN114325415B (en) | Verification method, device and medium for lithium battery electric quantity | |
| CN114325413B (en) | Power battery SOC correction method, device, equipment and storage medium | |
| CN113884918B (en) | Battery capacity prediction method and device | |
| CN113671403B (en) | Lithium battery SOC tail end smoothing method and device and lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |