CN113890157B - Method and device for maintaining battery equilibrium state in real time - Google Patents
Method and device for maintaining battery equilibrium state in real time Download PDFInfo
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- CN113890157B CN113890157B CN202111222384.8A CN202111222384A CN113890157B CN 113890157 B CN113890157 B CN 113890157B CN 202111222384 A CN202111222384 A CN 202111222384A CN 113890157 B CN113890157 B CN 113890157B
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- battery
- period
- switch
- equalization
- value
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- 238000000034 method Methods 0.000 title abstract description 7
- 238000010277 constant-current charging Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000012790 confirmation Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000010200 validation analysis Methods 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a method and a device for keeping battery balance in real time, which relate to the field of power electronics, and the method and the device comprise a main controller 1, a parameter configurator 2, a switch driver 3, a switch 4 and an energy accumulator 5.
Description
Technical Field
The invention relates to the technical field of power electronics.
Background
In a power supply system, whether an energy storage system or a standby power system is adopted, battery equalization in the system is one of the requirements for keeping the system stably running. The existing method for maintaining the balance of the battery adopts a post-balancing mode, and the balance circuit is started to restore the balance state of the battery when the unbalance of the battery is found through monitoring the battery. Because the prior art adopts a non-real-time technology, the switching period of the equalizing circuit is not set, the parameters of the energy accumulator are not set, and the real-time control structure is not provided.
Compared with the prior art, the invention provides a system structure for keeping the balance of the battery in real time, and provides a calculation method for the operation period and the energy storage parameters of the control system, thereby achieving the purpose of keeping the balance of the battery in real time, being suitable for recycling the battery and mixing the battery, and having higher compatibility of the energy storage system and the standby system to the battery and longer service life of the battery.
Description of the prior art
The invention uses the concept of the residual capacity of the battery, and the unit of the battery capacity is ampere hour, and the unit of the battery capacity is the battery capacity expressed by directly multiplying the current by the time.
Disclosure of Invention
In view of the defects of the prior art, the method and the device for realizing the real-time maintenance of the battery equilibrium state are composed of a main controller, a parameter configurator, a switch driver, a switch and an energy accumulator;
recording a battery unbalanced voltage reference value, a battery unbalanced confirmation time, a constant-current charging current value, a typical discharging current value and an balanced holding coefficient K according to a recommended value of a battery manufacturer by a parameter configurator; the value of the balance maintaining coefficient K is 10-1000, and the larger the value is, the higher the accuracy of maintaining the balance of the battery in real time is;
calculating an equalization hold control period by the master controller, the equalization hold control period = battery imbalance validation time/battery state of equalization hold coefficient;
calculating an equalization hold on stage control period by the master controller, the equalization hold on stage control period=5×the equalization hold control period; the balance keeping and starting stage control period is used for ensuring that the energy accumulator enters a working state from an initial state without energy;
calculating an accumulator capacity value by the master controller, wherein the accumulator capacity value=takes a maximum value (constant current charging current value, equalization holding coefficient/battery imbalance voltage reference value, typical discharging current value, equalization holding control period, equalization holding coefficient/battery imbalance voltage reference value);
configuring an energy accumulator according to the energy accumulator capacity value calculated by the initiative device;
the switch driver is responsible for generating a driving electric signal meeting the driving requirement of the alternative switch according to the switch control signal output by the main controller;
the master controller is responsible for generating a switch control signal: when the system is powered on for the first time and reset, the master controller executes 10 periods by taking the control period of the balanced keeping on stage as the period, the switch control signal generated by the master controller in the odd period is the point A for closing the alternative switch, and the switch control signal generated by the master controller in the even period is the point B for closing the alternative switch; when the system is powered on for the non-primary time and reset, the main controller continuously executes the system with the balanced maintenance control period as a period, the switch control signal generated by the main controller in the odd period is the point A for closing the alternative switch, and the switch control signal generated by the main controller in the even period is the point B for closing the alternative switch.
Advantageous effects
The invention provides a system structure for keeping the balance of the battery in real time, and provides a calculation method for the operation period and the energy accumulator parameters of the control system, thereby achieving the purpose of keeping the balance of the battery in real time.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
Referring to fig. 1, a method and apparatus for maintaining a battery equilibrium state in real time according to the present invention is composed of a master controller 1, a parameter configurator 2, a switch driver 3, an alternative switch 4 and an energy storage device 5;
recording a battery unbalanced voltage reference value, a battery unbalanced confirmation time, a constant-current charging current value, a typical discharging current value and an balanced holding coefficient K according to a recommended value of a battery manufacturer by a parameter configurator 2; the value of the balance maintaining coefficient K is 10-1000, and the larger the value is, the higher the accuracy of maintaining the balance of the battery in real time is;
calculating an equalization holding control period by the master controller 1, the equalization holding control period=battery imbalance confirmation time/battery equalization state holding coefficient;
calculating an equalization hold on phase control period by the master controller 1, the equalization hold on phase control period=5×the equalization hold control period; the balance hold opening stage control period is used for ensuring that the energy accumulator 5 enters a working state from an initial state without energy;
calculating, by the master controller 1, an accumulator capacity value of 5, the accumulator capacity value=taking the maximum value (constant current charge current value, equalization hold coefficient/battery imbalance voltage reference value, typical discharge current value, equalization hold control period, equalization hold coefficient/battery imbalance voltage reference value);
configuring an energy accumulator 5 according to the energy accumulator capacity value calculated by the initiative device 1;
the switch driver 3 is responsible for generating a driving electric signal meeting the driving requirement of the alternative switch 4 according to the switch control signal output by the main controller 1;
the master 1 is responsible for generating the switch control signal: when the system is powered on for the first time and the system is reset, the master controller 1 executes 10 periods by taking the control period of the balanced keeping on stage as the period, the switch control signal generated by the master controller 1 in the odd period is the point A for closing the alternative switch 4, and the switch control signal generated by the master controller 1 in the even period is the point B for closing the alternative switch 4; when the system is powered on for the non-primary time and reset, the main controller 1 continuously executes the system with the balanced maintenance control period as a period, the switch control signal generated by the main controller 1 in the odd period is the point A for closing the alternative switch 4, and the switch control signal generated by the main controller 1 in the even period is the point B for closing the alternative switch 4.
Claims (1)
1. The device for maintaining the battery equilibrium state in real time is characterized by comprising a main controller, a parameter configurator, a switch driver, a switch and an energy accumulator;
recording a battery unbalanced voltage reference value, a battery unbalanced confirmation time, a constant-current charging current value, a typical discharging current value and an balanced holding coefficient K according to a recommended value of a battery manufacturer by a parameter configurator; the value of the balance maintaining coefficient K is 10-1000, and the larger the value is, the higher the accuracy of maintaining the balance of the battery in real time is;
calculating an equalization hold control period by the master controller, the equalization hold control period = battery imbalance validation time/battery state of equalization hold coefficient;
calculating an equalization hold on stage control period by the master controller, the equalization hold on stage control period=5×the equalization hold control period; the balance keeping and starting stage control period is used for ensuring that the energy accumulator enters a working state from an initial state without energy;
calculating an accumulator capacity value by the master controller, wherein the accumulator capacity value=takes a maximum value (constant current charging current value, equalization holding coefficient/battery imbalance voltage reference value, typical discharging current value, equalization holding control period, equalization holding coefficient/battery imbalance voltage reference value);
configuring an energy accumulator according to the energy accumulator capacity value calculated by the initiative device;
the switch driver is responsible for generating a driving electric signal meeting the driving requirement of the alternative switch according to the switch control signal output by the main controller;
the master controller is responsible for generating a switch control signal: when the system is powered on for the first time and reset, the master controller executes 10 periods by taking the control period of the balanced keeping on stage as the period, the switch control signal generated by the master controller in the odd period is the point A for closing the alternative switch, and the switch control signal generated by the master controller in the even period is the point B for closing the alternative switch; when the system is powered on for the non-primary time and reset, the main controller continuously executes the system with the balanced maintenance control period as a period, the switch control signal generated by the main controller in the odd period is the point A for closing the alternative switch, and the switch control signal generated by the main controller in the even period is the point B for closing the alternative switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222384.8A CN113890157B (en) | 2021-10-20 | 2021-10-20 | Method and device for maintaining battery equilibrium state in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222384.8A CN113890157B (en) | 2021-10-20 | 2021-10-20 | Method and device for maintaining battery equilibrium state in real time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113890157A CN113890157A (en) | 2022-01-04 |
| CN113890157B true CN113890157B (en) | 2024-03-12 |
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| CN202111222384.8A Active CN113890157B (en) | 2021-10-20 | 2021-10-20 | Method and device for maintaining battery equilibrium state in real time |
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| CN (1) | CN113890157B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887853A (en) * | 2014-03-18 | 2014-06-25 | 浙江大学城市学院 | Balance control method of lithium-ion battery set |
| CN107139742A (en) * | 2017-04-19 | 2017-09-08 | 中国第汽车股份有限公司 | Vehicular dynamic battery monomer electric quantity balancing method |
| CN109256834A (en) * | 2018-10-12 | 2019-01-22 | 华南理工大学 | Battery pack active equalization method based on cell health state and state-of-charge |
| WO2021068972A1 (en) * | 2019-10-12 | 2021-04-15 | 山东大学 | Online monitoring and equalization circuit and method for series battery pack capacity in charged and discharged states |
-
2021
- 2021-10-20 CN CN202111222384.8A patent/CN113890157B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887853A (en) * | 2014-03-18 | 2014-06-25 | 浙江大学城市学院 | Balance control method of lithium-ion battery set |
| CN107139742A (en) * | 2017-04-19 | 2017-09-08 | 中国第汽车股份有限公司 | Vehicular dynamic battery monomer electric quantity balancing method |
| CN109256834A (en) * | 2018-10-12 | 2019-01-22 | 华南理工大学 | Battery pack active equalization method based on cell health state and state-of-charge |
| WO2021068972A1 (en) * | 2019-10-12 | 2021-04-15 | 山东大学 | Online monitoring and equalization circuit and method for series battery pack capacity in charged and discharged states |
Non-Patent Citations (1)
| Title |
|---|
| 神经元PID算法控制锂电池组充放电;韩庆康;李军;;合肥工业大学学报(自然科学版);20200828(08);全文 * |
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| CN113890157A (en) | 2022-01-04 |
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Effective date of registration: 20231128 Address after: 518057 Mobi Building 321, No. 17 Keji North 1st Road, Science Park, Xili Street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN FUGUANG POWER COMMUNICATION EQUIPMENT Co.,Ltd. Address before: 518000 6th floor, Moby antenna office building, No. 7, Langshan 1st Road, songpingshan community, Xili street, Nanshan District, Shenzhen, Guangdong Applicant before: Shenzhen Lingshi Smart Energy Co.,Ltd. |
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