CN114966423A - Method for automatically calibrating battery capacity SOC of battery replacement cabinet - Google Patents
Method for automatically calibrating battery capacity SOC of battery replacement cabinet Download PDFInfo
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- CN114966423A CN114966423A CN202210605272.9A CN202210605272A CN114966423A CN 114966423 A CN114966423 A CN 114966423A CN 202210605272 A CN202210605272 A CN 202210605272A CN 114966423 A CN114966423 A CN 114966423A
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- battery
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- upper computer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a method for automatically calibrating the SOC of the electric quantity of a battery by a battery replacement cabinet, which comprises the following steps: s1: the normally used battery enters a battery replacement cabinet, and the upper computer judges whether the current set SOC condition of the battery electric quantity calibration is met or not by acquiring the SOC, temperature and cycle time information of the battery; s2: after the upper computer judges that the battery meets the preset battery power SOC calibration condition, the upper computer starts the battery power SOC calibration condition, the upper computer sends information to the bin control board, and the bin control board receives the information to enable the battery to enter the battery power SOC calibration process; s3: the battery starts to discharge and charge until the battery is fully charged, the cycle times are changed, the upper computer judges that the SOC calibration of the battery is finished by identifying the cycle times in the battery register, and therefore the battery enters a normal operation state and waits for battery replacement. The invention can reduce parameter errors of the battery SOC caused by frequent use of the battery, and simultaneously improves the battery SOC calibration efficiency by adopting a multi-bin design.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a method for automatically calibrating the SOC of the battery electric quantity of a battery replacing cabinet.
Background
The battery is developed to the present, the popularization range is wider and wider, no matter consumer products such as an electric vehicle, a mobile phone and the like can not be used, the service life of the battery becomes a factor which can not be neglected when the battery is used, for the battery, a plurality of factors influence the service life of the battery, but the main factor is the SOC of the battery, namely the battery electric quantity, a plurality of methods for estimating the SOC of the battery appear at present, the various estimation methods have the advantages and disadvantages of the traditional current integration method, the battery internal resistance method, the discharge test method, the open-circuit voltage method and the load voltage method, the more innovative Kalman filtering method, the fuzzy logic theory method, the neural network method and the like, wherein the discharge test method is generally used as a calibration method for estimating and correcting the SOC of the battery and is widely used in the later maintenance work of the battery, and the method is relatively simple and adopted under the condition that the SOC value of the battery is unknown, Reliable, and the result is also more accurate, all effective to different kinds of batteries simultaneously.
However, the discharge test method also has two disadvantages: first, the testing process of the method takes a lot of time; second, the target battery needs to be removed from the user equipment when using the method, which affects the normal use of the battery.
Disclosure of Invention
The invention aims to overcome the defects of the technology and provides a method for automatically calibrating the SOC of a battery by a battery replacement cabinet.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for automatically calibrating the battery capacity SOC of a battery replacement cabinet comprises the following steps:
s1: the normally used battery enters a battery replacement cabinet, and the upper computer judges whether the SOC condition of the battery electric quantity is met or not by acquiring the SOC, temperature and cycle time information of the battery;
s2: after the upper computer judges that the battery meets the condition of calibrating the battery power SOC, executing a battery power SOC calibration program, sending information to a bin control board by the upper computer, and enabling the battery to enter a battery power SOC calibration process by the bin control board after receiving the information; if the battery does not meet the SOC condition of the battery electric quantity calibration, normally charging according to the battery electric quantity data of the battery;
s3: the method comprises the following steps that the battery starts to discharge and charge, after the battery is completely discharged (SOC is 0), the battery is charged to a full-charge state (SOC reaches 100%), the battery cycle number is changed, the upper computer judges that the SOC calibration of the battery is completed by identifying the cycle number in a battery register, reading full-charge information of the battery and the like, the battery exits a calibration program and enters a normal operation process to wait for use of battery replacement;
trade the battery rack and include the host computer, the host computer has the server platform through thing networking internet connection, and the host computer communication is connected with n battery compartment, and n is for the positive integer that is no longer than 12, is provided with the storehouse accuse board in the battery compartment, and storehouse accuse board communication connection has battery and charging source, and the battery electricity is connected with discharge resistance, is provided with control switch between storehouse accuse board and the discharge resistance, and host computer signal connection has rack temperature sensor.
Further, the condition of calibrating the battery capacity SOC includes the number of battery cycles, and the number of battery cycles is determined by dividing into three stages:
when the cycle number of the battery is less than or equal to 50 times, calibrating at least every 25 times;
when the battery cycle time is more than 50 and less than or equal to 500 times, calibrating once at intervals of 100 times;
when the battery cycle number is more than 500 and less than or equal to 1000, calibrating once at least every 200 times;
the SOC condition of the calibrated battery comprises the temperature of the battery, and when the temperature of the battery does not exceed the set highest temperature of the battery, the calibrated battery temperature condition is met;
the SOC condition of the calibrated battery electric quantity comprises the cabinet temperature of the power exchange cabinet, and when the cabinet temperature does not exceed the set maximum cabinet temperature, the calibrated cabinet temperature condition is met;
the SOC condition of the calibrated battery comprises the SOC of the battery, and when the SOC of the battery is less than or equal to 10%, the SOC condition of the calibrated battery is met;
the above conditions for calibrating the battery power SOC must all be satisfied at the same time, and the upper computer executes a battery power SOC calibration program.
Further, in the battery electric quantity SOC calibration process, if any one of the following conditions occurs, the calibration function stops running, and the bin control board reports to the upper computer to detect the battery again:
the battery temperature exceeds the set maximum battery temperature;
the temperature of the cabinet exceeds the set highest cabinet temperature;
overcurrent faults occur during battery charging;
the calibration process is not completed within the set calibration duration; the calibration duration is the sum of the time for starting discharging and charging the battery;
a communication fault occurs when the charger is charged;
the discharge resistor is disconnected or otherwise fails to function properly.
Further, in the battery electric quantity SOC calibration process, information such as the electric quantity SOC and the battery temperature of the battery is reported to the upper computer in real time, and the upper computer displays that the battery is in the calibration process and prohibits the battery replacement operation.
Further, the calibration battery charge SOC condition is set remotely by a server, or is directly modified locally.
Further, the time period for the upper computer to control the battery replacing cabinet to calibrate the battery power SOC can be set by itself, preferably 22:00-4:00, and the battery power SOC is not calibrated in other time periods.
The invention has the beneficial effects that:
1. through the multistage communication system of host computer and storehouse control panel, battery, charger to make battery SOC calibration can realize full automatization operation, through judging the battery use cycle number, combine the discharge test method, carry out once complete charge-discharge cycle to the battery, reduce the battery frequent use and lead to the parameter error that battery SOC appears, thereby reach the purpose of calibration battery SOC.
2. The battery replacement cabinet hardware facility adopting the multi-bin design can support a plurality of batteries to calibrate the SOC of the batteries simultaneously, and the SOC calibration efficiency of the batteries is directly improved.
Drawings
Fig. 1 is a schematic diagram of an overall technical circuit of a method for automatically calibrating a battery capacity SOC of a battery swapping cabinet according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a system for automatically calibrating the battery capacity SOC of the battery swapping cabinet according to the embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be further described with reference to the drawings and examples. It should be noted that the examples do not limit the scope of the claimed invention.
Example 1
As shown in fig. 1 and fig. 2, a method for automatically calibrating the battery capacity SOC of a battery swapping cabinet includes the following steps:
s1: the normally used battery enters a battery replacement cabinet, and the upper computer judges whether the SOC condition of the battery electric quantity is met or not by acquiring the SOC, temperature and cycle time information of the battery;
s2: after the upper computer judges that the battery meets the condition of calibrating the battery power SOC, executing a battery power SOC calibration program, sending information to a bin control board by the upper computer, and enabling the battery to enter a battery power SOC calibration process by the bin control board after receiving the information;
s3: the battery starts to discharge and charge until the battery is fully charged, the cycle times are changed, the upper computer judges that the SOC calibration of the battery electric quantity is finished by identifying the cycle times in the battery register, and therefore the battery enters a normal operation state and waits for the use of battery replacement;
trade the battery rack and include the host computer, the host computer has the server platform through thing networking internet connection, and the host computer communication is connected with n battery compartment, and n is for the positive integer that is no longer than 12, is provided with the storehouse accuse board in the battery compartment, and storehouse accuse board communication connection has battery and charging source, and the battery electricity is connected with discharge resistance, is provided with control switch between storehouse accuse board and the discharge resistance, and host computer signal connection has rack temperature sensor.
Further, the condition of calibrating the battery capacity SOC includes the number of battery cycles, and the number of battery cycles is determined by dividing into three stages:
when the cycle number of the battery is less than or equal to 50 times, calibrating at least every 25 times;
when the battery cycle time is more than 50 and less than or equal to 500 times, calibrating once at intervals of 100 times;
when the battery cycle number is more than 500 and less than or equal to 1000, calibrating once at least every 200 times;
the SOC condition of the calibrated battery comprises the temperature of the battery, and when the temperature of the battery does not exceed the set highest temperature of the battery, the calibrated battery temperature condition is met;
the SOC condition of the calibrated battery electric quantity comprises the cabinet temperature of the power exchange cabinet, and when the cabinet temperature does not exceed the set maximum cabinet temperature, the calibrated cabinet temperature condition is met;
the SOC condition of the calibrated battery comprises the SOC of the battery, and when the SOC of the battery is less than or equal to 10%, the SOC condition of the calibrated battery is met;
the above conditions for calibrating the battery power SOC must all be satisfied at the same time, and the upper computer executes a battery power SOC calibration program.
Further, after the battery receives the information sent by the bin gate control board, the battery starts to discharge through the discharge resistor, the information is reported to the control board after the battery is completely discharged, the bin control board automatically reports to the upper computer after the information is received, according to the information reported by the battery, the upper computer determines to send charging instruction information to the bin control board, the bin control board enables the battery to open the battery charging and discharging tube, the battery starts to be charged with the maximum charging current until the battery is fully charged, the whole battery capacity SOC calibration process is completed, in the process of calibrating the battery capacity SOC, the battery temperature exceeds the setting range of the upper computer, the battery is abnormally charged, the cabinet temperature is abnormal, the calibration process is not completed within the specified time, the calibration function stops running, the upper computer is reported through the bin control board, and the battery can be detected again.
The charger is at battery calibration electric quantity SOC in-process, the instruction of charging that receives storehouse control panel and send begins to detect for the battery, it begins to charge for the battery after passing to detect, until the battery is full of charge, receive the instruction of stopping charging that storehouse control panel sent and close the function of charging, accomplish the calibration of whole battery electric quantity SOC, the in-process of calibration battery electric quantity SOC, communication fault or the unusual situation of charging appear in the charger charging, lead to unable normal work, calibration function stop operation, report the host computer through storehouse control panel, the battery can detect again.
Discharge resistance is when carrying out battery electric quantity SOC calibration, acts as the role of load, and the battery is through connecting discharge resistance, carries out the electric quantity release, wait for after the battery electric quantity release is accomplished, break off its circuit of being connected with discharge resistance, accomplish the calibration of the SOC of whole battery electric quantity, the in-process of calibration battery electric quantity SOC, discharge resistance appears the disconnection or other trouble leads to unable normal work, calibration function stop operation, report the host computer on through storehouse control panel, the battery can detect again.
When the temperature sensor starts to carry out the calibration of battery power SOC, the storehouse control board and host computer can confirm discharge resistance temperature and rack temperature information, if the temperature is within the setting range of calibration battery power SOC condition this moment, just begin to carry out the calibration of battery power SOC, the temperature surpasss the setting range appears in the in-process of calibration power SOC, host computer chance automatic judgement and transmission stop calibration instruction, the host computer is reported to through storehouse control board to the calibration function stop operation, the battery can detect again.
Further, in the battery electric quantity SOC calibration process, information such as the electric quantity SOC and the battery temperature of the battery is reported to the upper computer in real time, and the upper computer displays that the battery is in the calibration process and prohibits the battery replacement operation.
Further, the calibration battery charge SOC condition is set remotely by the server, or is directly modified locally.
Further, the time period for the upper computer to control the battery replacing cabinet to calibrate the battery power SOC can be set by itself, preferably 22:00-4:00, and the battery power SOC is not calibrated in other time periods.
The battery that normally uses gets into and trades the battery rack through trading the electricity, the host computer is through information such as the SOC of gathering the battery, the temperature, cycle number, simultaneously according to current rack temperature, judge whether satisfy the calibration battery power SOC condition of current setting, the host computer can carry out battery power SOC calibration procedure after satisfying the condition, send information to the storehouse control panel, the storehouse control panel receives information messenger battery entering battery power SOC calibration process, the battery begins to discharge and charge, until the battery is full of electricity, cycle number changes, mark the battery and accomplish electric quantity SOC calibration process.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A method for automatically calibrating the SOC of the battery capacity of a battery replacement cabinet is characterized by comprising the following steps:
s1: the normally used battery enters a battery replacement cabinet, and the upper computer judges whether the SOC condition of the battery electric quantity is met or not by acquiring the SOC, temperature and cycle time information of the battery;
s2: after the upper computer judges that the battery meets the condition of calibrating the battery power SOC, executing a battery power SOC calibration program, sending information to a bin control board by the upper computer, and enabling the battery to enter a battery power SOC calibration process by the bin control board after receiving the information;
s3: the battery starts to discharge and charge, the SOC of the battery is 0 after discharging, then the battery is charged until the battery is fully charged, namely the SOC of the battery is 100%, the cycle times of the battery are changed, the upper computer reads the battery electric quantity data when the battery is fully charged by identifying the cycle times in the battery register and updates the battery electric quantity data to finish the SOC calibration of the battery electric quantity, so that the battery enters a normal operation state and waits for the use of battery replacement;
trade the battery rack and include the host computer, the host computer has the server platform through thing networking internet connection, and the host computer communication is connected with n battery compartment, and n is for the positive integer that is no longer than 12, is provided with the storehouse accuse board in the battery compartment, and storehouse accuse board communication connection has battery and charging source, and the battery electricity is connected with discharge resistance, is provided with control switch between storehouse accuse board and the discharge resistance, and host computer signal connection has rack temperature sensor.
2. The method for automatically calibrating the battery charge SOC according to claim 1, wherein the condition for calibrating the battery charge SOC comprises a battery cycle number, and the battery cycle number is determined in three stages:
when the cycle number of the battery is less than or equal to 50 times, calibrating at least every 25 times;
when the battery cycle time is more than 50 and less than or equal to 500 times, calibrating once at intervals of 100 times;
when the battery cycle number is more than 500 and less than or equal to 1000, calibrating once at least every 200 times;
the SOC condition of the calibrated battery comprises the temperature of the battery, and when the temperature of the battery does not exceed the set highest temperature of the battery, the calibrated battery temperature condition is met;
the SOC condition of the calibrated battery electric quantity comprises the cabinet temperature of the power exchange cabinet, and when the cabinet temperature does not exceed the set maximum cabinet temperature, the calibrated cabinet temperature condition is met;
the SOC condition of the calibrated battery comprises the SOC of the battery, and when the SOC of the battery is less than or equal to 10%, the SOC condition of the calibrated battery is met;
the above conditions for calibrating the battery power SOC must all be satisfied at the same time, and the upper computer executes a battery power SOC calibration program.
3. The method for automatically calibrating the battery charge SOC according to claim 1, wherein in the battery charge SOC calibration process, if any one of the following conditions occurs, the calibration function stops running, and the bin control panel reports to the upper computer to detect the battery again:
the battery temperature exceeds the set maximum battery temperature;
the temperature of the cabinet exceeds the set highest cabinet temperature;
overcurrent faults occur during battery charging;
the calibration process is not completed within the set calibration duration; the calibration duration is the sum of the time for discharging and charging the battery;
a communication fault occurs when the charger is charged;
the discharge resistor is disconnected or otherwise fails to function properly.
4. The method for automatically calibrating the battery power SOC according to claim 1, wherein in the battery power SOC calibration process, information such as the battery power SOC and the battery temperature of the battery is reported to the upper computer in real time, and the upper computer displays that the battery is in the calibration process and the battery replacement operation is prohibited.
5. The method for automatically calibrating the battery charge SOC according to claim 1, wherein the calibration battery charge SOC condition is set remotely by a server or modified directly locally.
6. The method for automatically calibrating the battery power SOC of the battery swapping cabinet as claimed in claim 1, wherein the time period for the upper computer to control the battery swapping cabinet to calibrate the battery power SOC is 22:00-4: 00.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605272.9A CN114966423A (en) | 2022-05-31 | 2022-05-31 | Method for automatically calibrating battery capacity SOC of battery replacement cabinet |
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| CN202210605272.9A CN114966423A (en) | 2022-05-31 | 2022-05-31 | Method for automatically calibrating battery capacity SOC of battery replacement cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345648A (en) * | 2023-05-31 | 2023-06-27 | 苏州精控能源科技有限公司 | Large-scale energy storage system battery cluster SOC balance method, equipment and storage medium |
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2022
- 2022-05-31 CN CN202210605272.9A patent/CN114966423A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345648A (en) * | 2023-05-31 | 2023-06-27 | 苏州精控能源科技有限公司 | Large-scale energy storage system battery cluster SOC balance method, equipment and storage medium |
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