CN117748650A - Intelligent battery management system and method - Google Patents
Intelligent battery management system and method Download PDFInfo
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- CN117748650A CN117748650A CN202311682210.9A CN202311682210A CN117748650A CN 117748650 A CN117748650 A CN 117748650A CN 202311682210 A CN202311682210 A CN 202311682210A CN 117748650 A CN117748650 A CN 117748650A
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- 238000013022 venting Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 10
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Abstract
The invention discloses an intelligent battery management system and method, comprising a battery power management system, wherein the battery power management system comprises a full charge calibration module, a venting calibration module, a static calibration module and a static power consumption accumulation module. The intelligent battery management system can realize the management of the full charge state of the battery and the intelligent power-off management after full charge by arranging the full charge calibration module, the emptying calibration module, the static calibration module and the static power consumption accumulation module; state management and power-off management of battery discharge can be realized; the management of the energy consumption of the battery can be realized; the electric quantity calibration management operation of the battery can be realized; realizing the intelligent management function of the battery. The intelligent battery management method provided by the invention realizes specific judgment on the full charge and low electric quantity state of the battery, can realize the calibration operation on the residual electric quantity percentage of the battery under the open-circuit voltage, and realizes more accurate electric quantity management of the battery.
Description
Technical Field
The invention relates to the field of battery management, in particular to an intelligent battery management system and method.
Background
The basic principle of the battery is that an anode (namely, a cathode-) is made of a metal material with higher activity, a cathode (namely, an anode+), which is made of a more stable material, loses electrons due to coulomb force (reduction reaction) and flows to the cathode to obtain electrons (oxidation reaction), and anions of the cathode flow to the anode to combine with cations in the battery (electrolyte), so that a loop is formed, and electric energy is generated. With the development of new energy sources, energy storage applications and electric vehicles are increasing, and batteries also occupy more and more important positions in modern energy structures.
At present, various batteries can carry out electric quantity display operation on the batteries when in use, so that management operation on the batteries can be conveniently realized, and therefore, the electric quantity calibration management of the batteries is very necessary for the use of the batteries. In the continuous use process of the battery, the performance of the battery can be changed along with the change of the use frequency and the use time, and at the moment, the display of the electric quantity of the battery can be in error, so that the management of the battery is greatly influenced.
The invention aims to provide an intelligent battery management system and method.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides an intelligent battery management system and method, which can realize accurate electric quantity management calibration operation on a battery through being provided with a full charge calibration module, an emptying calibration module, a static calibration module and a static power consumption accumulation module.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: an intelligent battery management system comprises a battery power management system, wherein the battery power management system comprises a full charge calibration module, a venting calibration module, a static calibration module and a static power consumption accumulation module;
the full charge calibration module consists of a single voltage detection unit, a charging request unit and a full charge release unit;
the emptying calibration module consists of a state monitoring unit and a triggering unit;
the static calibration module consists of a short calibration unit and a long calibration unit;
the static power consumption accumulation module consists of a rated capacity unit and a power consumption current unit.
Preferably, the full charge calibration module may implement calibration operation on the voltage of the battery in the full charge state, and mainly includes: full charge voltage, discharge voltage, standard cell voltage and average cell voltage.
Preferably, the emptying calibration module can determine the battery power emptying state, and ensure the stability of the battery in a low power state.
Preferably, the static calibration module can calibrate the percentage of the remaining power of the battery under the open-circuit voltage, so that the percentage of the remaining power of the battery is accurately displayed.
Preferably, the static power consumption accumulation module may implement calculation of power consumption current of the battery, where a formula of the calculation is: (0.02 rating capacity x battery health)/24 amps.
An intelligent battery management method, comprising the steps of:
s1: the method comprises the steps of performing charging operation on a battery, detecting the voltage inside the battery through a single voltage detection unit, a charging request unit and a full charge release unit, setting the residual capacity of the battery to 100% at the moment after the full charge release unit reaches a set value, and stopping charging the battery at the moment after the charging request unit reaches the set value;
s2: performing discharging operation on the battery, continuously monitoring the discharging state through a state monitoring unit, stopping discharging the battery at the moment and setting the residual electric quantity of the battery at the moment to be 0% after the battery continuously discharges to reach the condition set in a triggering unit, and completing the calibration of the minimum electric quantity state of the battery;
s3: under the conditions of using and standing the battery, collecting data of rated capacity of the battery, namely the battery health degree, through a rated capacity unit, and calculating according to (0.02, namely the rated capacity, namely the battery health degree)/24 through a power consumption current unit, so as to calibrate the power consumption of the battery and the residual capacity of the battery;
s4: and (3) performing calibration operation on the percentage of the residual electric quantity of the battery under the open-circuit voltage, and further improving the electric quantity management accuracy of the battery.
Preferably, the determining the charging of the battery and the battery power in the step 1 includes the following steps:
s11: firstly, each battery cell charges, and when the voltage of the battery cell reaches 3.20V, the charging of the next battery cell is continued;
s12: then, when all the battery cells are charged and the voltage of the battery cells reaches 3.20V, full charge calibration is completed, and the electric quantity is 100%;
s13: and finally, continuously charging the battery, completing the sequential charging of the battery cells, and disconnecting and continuously charging when the voltages of the battery cells reach 3.60V.
Preferably, the monitoring conditions of the state monitoring unit in the step 2 are as follows: the battery discharge state, the residual electric quantity less than or equal to 10% and the average battery voltage less than or equal to 3.1V; the triggering unit is conditioned by a cell voltage of less than 2.0 volts and a duration of greater than or equal to 1000 milliseconds.
Preferably, the calibration operation of the percentage of the remaining power of the battery at the open circuit voltage in the step 4 includes the following steps:
s41: firstly, setting a designated discharge temperature and a discharge amount interval;
s42: then, performing discharge operation of a specified discharge capacity interval at a specified temperature, and after the discharge is completed, recording and standing the data for a certain time;
s43: finally, the above operation was repeated, the battery power was discharged from 100% to 0%, and the recorded data were summarized and analyzed.
(III) beneficial effects
Compared with the prior art, the invention provides an intelligent battery management system and method, which have the following beneficial effects: the intelligent battery management system can realize the management of the full charge state of the battery and the intelligent power-off management after full charge by arranging the full charge calibration module, the emptying calibration module, the static calibration module and the static power consumption accumulation module; state management and power-off management of battery discharge can be realized; the management of the energy consumption of the battery can be realized; the electric quantity calibration management operation of the battery can be realized; realizing the intelligent management function of the battery. The intelligent battery management method provided by the invention realizes specific judgment on the full charge and low electric quantity state of the battery, can realize the calibration operation on the residual electric quantity percentage of the battery under the open-circuit voltage, and realizes more accurate electric quantity management of the battery.
Drawings
FIG. 1 is a schematic diagram of a system architecture of the present invention;
FIG. 2 is a diagram of the present invention; a method flow chart;
FIG. 3 is a charging flow chart of the battery of the present invention;
fig. 4 is a flowchart of the calibration at the open circuit voltage of the battery according to the present invention.
Detailed Description
For a better understanding of the objects, structures and functions of the present invention, a more detailed description of an intelligent battery management system and method of the present invention is provided below with reference to the accompanying drawings.
Referring to fig. 1, the invention: an intelligent battery management system comprises a battery power management system, wherein the battery power management system comprises a full charge calibration module, a venting calibration module, a static calibration module and a static power consumption accumulation module;
the full charge calibration module consists of a single voltage detection unit, a charging request unit and a full charge release unit;
the emptying calibration module consists of a state monitoring unit and a triggering unit;
the static calibration module consists of a short calibration unit and a long calibration unit;
the static power consumption accumulation module consists of a rated capacity unit and a power consumption current unit.
Specifically, the full charge calibration module may implement calibration operation on a voltage of the battery in a full charge state, and mainly includes: full charge voltage, discharge voltage, standard cell voltage and average cell voltage; wherein, the full charge voltage is 3.60V; the charge release voltage is 3.30V; the standard cell voltage of the battery is 3.60 volts, and the average cell voltage of the battery is 3.20 volts; and allowing recharging when the full charge release voltage is less than or equal to 3.3 volts for 1 second;
the emptying calibration module can determine the battery electric quantity emptying state, ensures the stability of the battery in a low electric quantity state, and has the precondition that the electric quantity is less than or equal to 10 percent and the average voltage is less than or equal to 3.1 volts in a discharging state, and the triggering condition that the lowest single voltage is less than 2.0 volts and the duration time is more than or equal to 1000 milliseconds;
the static calibration module can calibrate the percentage of the residual electric quantity of the battery under the open-circuit voltage, so that the percentage of the residual electric quantity of the battery is accurately displayed; the calibration period of the short calibration unit is 2 hours, the calibration period of the long calibration unit is 5 days, and the static calibration module has a static condition that the loop current is less than or equal to 3 amperes when in use;
the static power consumption accumulation module can calculate the power consumption current of the battery, and the calculation formula is as follows: (0.02 rated capacity x battery health)/24 amps, an average drop of 2% per day shows the charge.
Referring to fig. 2-4, an intelligent battery management method includes the following steps:
s1: the method comprises the steps of performing charging operation on a battery, detecting the voltage inside the battery through a single voltage detection unit, a charging request unit and a full charge release unit, setting the residual capacity of the battery to 100% at the moment after the full charge release unit reaches a set value, and stopping charging the battery at the moment after the charging request unit reaches the set value;
s2: performing discharging operation on the battery, continuously monitoring the discharging state through a state monitoring unit, stopping discharging the battery at the moment and setting the residual electric quantity of the battery at the moment to be 0% after the battery continuously discharges to reach the condition set in a triggering unit, and completing the calibration of the minimum electric quantity state of the battery;
s3: under the conditions of using and standing the battery, collecting data of rated capacity of the battery, namely the battery health degree, through a rated capacity unit, and calculating according to (0.02, namely the rated capacity, namely the battery health degree)/24 through a power consumption current unit, so as to calibrate the power consumption of the battery and the residual capacity of the battery;
s4: and (3) performing calibration operation on the percentage of the residual electric quantity of the battery under the open-circuit voltage, and further improving the electric quantity management accuracy of the battery.
Specifically, the method comprises the following steps: the method for determining the charging of the battery and the electric quantity of the battery comprises the following steps:
s11: firstly, each battery cell charges, and when the voltage of the battery cell reaches 3.20V, the charging of the next battery cell is continued;
s12: then, when all the battery cells are charged and the voltage of the battery cells reaches 3.20V, full charge calibration is completed, and the electric quantity is 100%;
s13: and finally, continuously charging the battery, completing the sequential charging of the battery cells, and disconnecting and continuously charging when the voltages of the battery cells reach 3.60V.
Furthermore, accurate calibration management of 100% of the electric quantity of the battery is realized, the electric quantity of the battery is ensured to be in a proper range, the performance degradation of the battery caused by overdischarge and overcharge is effectively avoided, and the use effect is good;
the monitoring conditions of the state monitoring unit are as follows: the battery discharge state, the residual electric quantity less than or equal to 10% and the average battery voltage less than or equal to 3.1V; the condition of the triggering unit is that the voltage of a single body is smaller than 2.0V and the duration is larger than or equal to 1000 milliseconds, so that the low-power state of the battery is determined, and the 0% state of the battery is conveniently calibrated and managed;
a calibration operation of the percentage of remaining charge at the battery open circuit voltage, comprising the steps of:
s41: firstly, setting a designated discharge temperature and a discharge amount interval;
s42: then, performing discharge operation of a specified discharge capacity interval at a specified temperature, and after the discharge is completed, recording and standing the data for a certain time;
s43: finally, the above operation was repeated, the battery power was discharged from 100% to 0%, and the recorded data were summarized and analyzed.
Furthermore, the electric quantity calibration management of the battery based on the open-circuit state of the battery core is realized, and the accuracy of the electric quantity management of the battery is improved;
still further, the detected temperature is between 10 and 55 ℃, every 5 ℃ is a temperature standard, and the discharge interval is 5%; when the short calibration unit is used, the standing time is 6 minutes, which is 2 hours in total; the rest time was 6 hours for a total of 5 days when used with a long calibration unit.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. An intelligent battery management system comprises a battery power management system and is characterized by comprising a full charge calibration module, a venting calibration module, a static calibration module and a static power consumption accumulation module;
the full charge calibration module consists of a single voltage detection unit, a charging request unit and a full charge release unit;
the emptying calibration module consists of a state monitoring unit and a triggering unit;
the static calibration module consists of a short calibration unit and a long calibration unit;
the static power consumption accumulation module consists of a rated capacity unit and a power consumption current unit.
2. An intelligent battery management system according to claim 1, wherein: the full charge calibration module can realize the calibration operation of the voltage of the battery in the full charge state, and mainly comprises the following steps: full charge voltage, discharge voltage, standard cell voltage and average cell voltage.
3. An intelligent battery management system according to claim 1, wherein: the emptying calibration module can determine the battery electric quantity emptying state and ensure the stability of the battery in a low electric quantity state.
4. An intelligent battery management system according to claim 1, wherein: the static calibration module can calibrate the percentage of the residual electric quantity of the battery under the open-circuit voltage, so that the percentage of the residual electric quantity of the battery is accurately displayed.
5. An intelligent battery management system according to claim 1, wherein: the static power consumption accumulation module can calculate the power consumption current of the battery, and the calculation formula is as follows: (0.02 rating capacity x battery health)/24 amps.
6. An intelligent battery management method, comprising the following steps, characterized in that:
s1: the method comprises the steps of performing charging operation on a battery, detecting the voltage inside the battery through a single voltage detection unit, a charging request unit and a full charge release unit, setting the residual capacity of the battery to 100% at the moment after the full charge release unit reaches a set value, and stopping charging the battery at the moment after the charging request unit reaches the set value;
s2: performing discharging operation on the battery, continuously monitoring the discharging state through a state monitoring unit, stopping discharging the battery at the moment and setting the residual electric quantity of the battery at the moment to be 0% after the battery continuously discharges to reach the condition set in a triggering unit, and completing the calibration of the minimum electric quantity state of the battery;
s3: under the conditions of using and standing the battery, collecting data of rated capacity of the battery, namely the battery health degree, through a rated capacity unit, and calculating according to (0.02, namely the rated capacity, namely the battery health degree)/24 through a power consumption current unit, so as to calibrate the power consumption of the battery and the residual capacity of the battery;
s4: and (3) performing calibration operation on the percentage of the residual electric quantity of the battery under the open-circuit voltage, and further improving the electric quantity management accuracy of the battery.
7. The intelligent battery management method according to claim 6, wherein: the step 1 for determining the charging of the battery and the battery power comprises the following steps:
s11: firstly, each battery cell charges, and when the voltage of the battery cell reaches 3.20V, the charging of the next battery cell is continued;
s12: then, when all the battery cells are charged and the voltage of the battery cells reaches 3.20V, full charge calibration is completed, and the electric quantity is 100%;
s13: and finally, continuously charging the battery, completing the sequential charging of the battery cells, and disconnecting and continuously charging when the voltages of the battery cells reach 3.60V.
8. The intelligent battery management method according to claim 6, wherein: the monitoring conditions of the state monitoring unit in the step 2 are as follows: the battery discharge state, the residual electric quantity less than or equal to 10% and the average battery voltage less than or equal to 3.1V; the triggering unit is conditioned by a cell voltage of less than 2.0 volts and a duration of greater than or equal to 1000 milliseconds.
9. The intelligent battery management method according to claim 6, wherein: the calibration operation of the remaining capacity percentage under the battery open circuit voltage in the step 4 comprises the following steps:
s41: firstly, setting a designated discharge temperature and a discharge amount interval;
s42: then, performing discharge operation of a specified discharge capacity interval at a specified temperature, and after the discharge is completed, recording and standing the data for a certain time;
s43: finally, the above operation was repeated, the battery power was discharged from 100% to 0%, and the recorded data were summarized and analyzed.
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| CN202311682210.9A CN117748650A (en) | 2023-12-08 | 2023-12-08 | Intelligent battery management system and method |
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