CN109638906A - Battery management method, system and storage medium - Google Patents
Battery management method, system and storage medium Download PDFInfo
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- CN109638906A CN109638906A CN201811467514.2A CN201811467514A CN109638906A CN 109638906 A CN109638906 A CN 109638906A CN 201811467514 A CN201811467514 A CN 201811467514A CN 109638906 A CN109638906 A CN 109638906A
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- voltage value
- discharged
- voltage
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- 238000007726 management method Methods 0.000 title claims abstract description 48
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000006378 damage Effects 0.000 description 8
- 239000000446 fuel Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000005779 cell damage Effects 0.000 description 4
- 208000037887 cell injury Diseases 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000005955 Ferric phosphate Substances 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 229940032958 ferric phosphate Drugs 0.000 description 3
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 239000007787 solid Substances 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 relates to a battery management method, a system and a storage medium, wherein the management method comprises the following steps: detecting a voltage value of each single battery; searching at least one single battery with the voltage value outside a preset voltage threshold interval as a battery to be balanced; determining a maximum positive voltage difference and a maximum negative voltage difference; judging whether the maximum positive voltage difference is smaller than the maximum negative voltage difference; if so, performing charge control on the battery to be equalized, the voltage value of which is smaller than the preset threshold interval; if not, discharging control is carried out on the battery to be equalized, wherein the voltage value of the battery to be equalized is larger than the preset threshold interval. According to the embodiment of the invention, by detecting the voltage values of the single batteries, when the voltage value of any single battery does not accord with the preset threshold value, the maximum positive voltage difference and the maximum negative voltage difference are determined, and the charge and discharge control is performed on the single battery which does not accord with the preset threshold value according to the maximum positive voltage difference and the maximum voltage difference, so that the balance control of each single battery of the battery pack is realized, the service efficiency of the battery pack is improved, and the service life of the battery pack is prolonged.
Description
Technical field
The present invention relates to technical field of battery management more particularly to a kind of battery management methods, system and storage medium.
Background technique
Batteries of electric automobile divides two major classes, battery and fuel cell.Battery is suitable for pure electric automobile, including plumbic acid
Battery, nickel-metal hydride battery, sodium-sulphur battery, serondary lithium battery, air cell.Fuel cell is exclusively used in fuel cell electric vehicle,
Including alkaline fuel cell, phosphoric acid fuel cell, molten carbonate fuel cell, solid oxide fuel cell, proton exchange
Membrane cell, direct methanol fuel cell.
Ferric phosphate lithium cell have many advantages, such as the small, energy storage of charging/discharging voltage variation greatly, it is without memory, environmentally friendly, be electronic vapour
One of the optimal selection of vehicle electrical source of power.Ferric phosphate lithium cell group is connected in series by many single batteries, due to battery process etc.
Factor causes battery behavior to change and bring difference.Battery behavior difference source includes that internal resistance of cell change and battery are old
Change, is easy to make that overcharge occurs in battery charging process and internal impedance increases phenomenon, so that end voltage change is obvious, shorten battery
Service life.
Summary of the invention
Of the existing technology in order to solve the problems, such as, at least one embodiment of the present invention provides a kind of battery management side
Method, system and storage medium.
In a first aspect, the embodiment of the invention provides a kind of battery management method, applied to multiple single batteries
Battery pack, the management method include:
The voltage value of S1, each single battery of detection；
The voltage value that S2, basis detect searches voltage value and is located at least one monomer outside predetermined voltage threshold section
Battery, as battery to be balanced；
S3, the voltage value according to all battery to be balanceds and the predetermined voltage threshold section determine maximum positive electricity
Pressure difference and maximum negative electricity pressure difference；
S4, judge whether the maximum positive voltage difference is less than the maximum negative electricity pressure difference；
If so, the battery to be balanced for being less than the preset threshold section to voltage value carries out charge control；If it is not, to voltage
The battery to be balanced that value is greater than the preset threshold section carries out control of discharge.
Based on the above-mentioned technical proposal, the embodiment of the present invention can also make following improvement.
With reference to first aspect, described that the preset threshold is greater than to voltage value in the first embodiment of first aspect
The battery to be balanced in section carries out control of discharge, comprising:
S21, the battery to be balanced that all voltage values are greater than the preset threshold section is obtained, forms battery to be balanced
Group；
S22, the battery to be balanced for meeting preset condition is obtained from the battery to be balanced group, as battery to be discharged；
The battery to be discharged is mutually non-conterminous, and the maximum battery to be balanced of voltage value is electricity to be discharged in the battery to be balanced group
Pond；
S23, it discharges all batteries to be discharged, and re-starts S21~S23 until institute after the completion of electric discharge
Battery to be balanced group is stated as sky.
The first embodiment with reference to first aspect, in second of embodiment of first aspect, it is described from described to equal
The battery to be balanced for meeting preset condition is obtained in weighing apparatus battery pack, as battery to be discharged；The battery to be discharged is mutually non-conterminous,
And the maximum battery to be balanced of voltage value is battery to be discharged in the battery to be balanced group, comprising:
S31, the space serial number for obtaining each battery to be balanced in the battery to be balanced group；
S32, by the corresponding space serial number of the maximum battery to be balanced of voltage value in the battery to be balanced group,
As serial number to be discharged；
S33, by the voltage value of battery to be balanced in the battery to be balanced group from greatly to small sequence, successively judgement is except electricity
Pressure be worth all battery to be balanceds other than the maximum battery to be balanced space serial number whether with all sequences to be discharged
It is number non-conterminous；
If so, using the space serial number of the battery to be balanced as serial number to be discharged；If it is not, not dealing with；
S34, by the corresponding battery to be balanced of all serial numbers to be discharged, as battery to be discharged.
With reference to first aspect, described that the preset threshold is greater than to voltage value in the third embodiment of first aspect
The battery to be balanced in section carries out control of discharge, comprising:
All battery to be balanceds that voltage value is greater than the preset threshold section are obtained, as battery to be discharged；
Voltage value by the battery to be discharged is to small sequence, successively discharging to the battery to be discharged greatly.
With reference to first aspect, described that the preset threshold is less than to voltage value in the 4th kind of embodiment of first aspect
The battery to be balanced in section carries out charge control, comprising:
S41, all battery to be balanceds that all voltage values are less than the preset threshold section are obtained, formed to be equalized
Battery pack；
S42, the battery to be balanced for meeting preset condition is obtained from the battery to be balanced group, as battery to be charged；
The battery to be charged is mutually non-conterminous, and the maximum battery to be balanced of voltage value in the battery to be balanced group is electricity to be charged
Pond；
S43, charge to all batteries to be charged, and charge electricity after the completion of re-start S41~S43 until
The battery to be balanced group is sky.
The 4th kind of embodiment with reference to first aspect, in the 5th kind of embodiment of first aspect, it is described from described to equal
The battery to be balanced for meeting preset condition is obtained in weighing apparatus battery pack, as battery to be charged；The battery to be charged is mutually non-conterminous,
And the maximum battery to be balanced of voltage value in the battery to be balanced group is battery to be charged, comprising:
S51, the space serial number for obtaining each battery to be balanced in the battery to be balanced group；
S52, by the corresponding space serial number of the smallest battery to be balanced of voltage value in the battery to be balanced group, make
For serial number to be charged；
S53, by the voltage value of battery to be balanced in the battery to be balanced group from as low as big sequence, successively judgement is except electricity
Pressure be worth all battery to be balanceds other than the smallest battery to be balanced space serial number whether with it is all described wait fill
Electric serial number is non-conterminous；
If so, using the space serial number of the battery to be balanced as serial number to be charged；If it is not, not dealing with；
S54, by the corresponding battery to be balanced of all serial numbers to be charged, as battery to be charged.
With reference to first aspect, described that the preset threshold is less than to voltage value in the 6th kind of embodiment of first aspect
The battery to be balanced in section carries out charge control, comprising:
All battery to be balanceds that voltage value is less than the preset threshold section are obtained, as battery to be charged；
By the voltage value of the battery to be charged from as low as big sequence, successively charge to the battery to be charged.
With reference to first aspect or the first, second, third, fourth, the 5th or the 6th kind of embodiment of first aspect, first
7th kind of embodiment of aspect, the management method further include:
When the voltage value for not having any single battery is located at outside the preset threshold section, it is spaced preset duration
Afterwards, S1~S4 is re-executed；
The management method further include:
After the completion of S5, control of discharge or charge control, S1~S4 is re-started.
Second aspect, the embodiment of the invention provides a kind of battery management system, the battery management system includes processing
Device, memory；The processor is for executing the battery management program stored in the memory, to realize that first aspect is any
Battery management method described in embodiment.
The third aspect, the embodiment of the invention provides a kind of computer can storage medium, the computer can storage medium
It is stored with one or more program, one or more of programs can be executed by one or more processor, to realize
Battery management method described in first aspect any embodiment.
Above-mentioned technical proposal of the invention has the advantages that the embodiment of the present invention is single by detection compared with prior art
The voltage value of body battery determines that maximum positive voltage difference and maximum are negative when any unit cell voltage value does not meet preset threshold
Voltage difference carries out charge and discharge control to the single battery for not meeting preset threshold according to maximum positive voltage difference and maximum voltage difference,
It realizes to the Balance route of each single battery of battery pack, improves the service efficiency and service life of battery pack.
Detailed description of the invention
Fig. 1 is a kind of battery management method flow diagram provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of battery management method flow diagram；
Fig. 3 is a kind of battery management method flow diagram one that further embodiment of this invention provides；
Fig. 4 be further embodiment of this invention provide a kind of battery management method flow diagram secondly；
Fig. 5 be further embodiment of this invention provide a kind of battery management method flow diagram thirdly；
Fig. 6 is a kind of battery management system structural schematic diagram that further embodiment of this invention provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of battery management method provided in an embodiment of the present invention, applied to multiple single batteries
Battery pack, in the present embodiment, the battery pack with multiple single batteries can be ferric phosphate lithium cell, and management method includes:
The voltage value of S1, each single battery of detection.
When being powered by battery pack to load, if the voltage difference of different single batteries is excessive, and from difference
Single battery take electricity be it is balanced, will lead to electricity lesser single battery damage and detect in battery pack in the present embodiment
Each single battery voltage value, it is subsequent to carry out using the voltage value of each single battery as the electricity of the single battery
Step, the voltage value for acquiring each single battery can be obtained by the voltage collecting device being connected on each single battery
It takes.
The voltage value that S2, basis detect searches voltage value and is located at least one monomer outside predetermined voltage threshold section
Battery, as battery to be balanced.
The voltage value of each single battery is compared with predetermined voltage threshold section respectively, voltage value is searched and is located in advance
If the single battery outside voltage threshold section, and as battery to be balanced, in the present embodiment, predetermined voltage threshold section
When can be battery pack stable operation, the voltage value having needed for each single battery, if exceeding the predetermined voltage threshold section,
The such as larger than maximum value in predetermined voltage threshold section, or less than the minimum value in predetermined voltage threshold section, then it is possible that it is single
The excessive situation of voltage difference between body battery, and the voltage difference between different single batteries is excessive, so that battery pack is being discharged
It is possible to damage in the process, needs the voltage progress charge and discharge to battery to be balanced electrically operated, at this time to realize in battery pack
The balance of the voltage of single battery, improves the service life of battery, if voltage value, which is not detected, is not located at predetermined voltage threshold area
Between outer single battery, then single battery at this time not carry out that charge and discharge is electrically operated good to be powered.
S3, the voltage value according to all battery to be balanceds and predetermined voltage threshold section determine maximum positive voltage difference and most
Big negative electricity pressure difference.
In the present embodiment, voltage difference indicates the difference of different voltages, for example, available voltage value is greater than preset threshold
All battery to be balanceds in section, and the maximum value calculation of maximum value and predetermined voltage threshold section in the voltage value is maximum
The maximum value that positive electricity pressure difference, i.e. maximum positive voltage difference are equal in voltage value subtracts the maximum value in predetermined voltage threshold section, if not having
There is the voltage value of balancing battery to be greater than the maximum value in preset threshold section, then the maximum positive voltage difference is 0；Voltage value is obtained to be less than
All battery to be balanceds in preset threshold section, and by the voltage value small value and predetermined voltage threshold section minimum value meter
Maximum negative electricity pressure difference is calculated, i.e., the minimum value that maximum negative electricity pressure difference is equal to predetermined voltage threshold section subtracts the minimum in voltage value
Value, if the voltage value of balancing battery is not less than the minimum value in preset threshold section, which is 0.
S4, judge whether maximum positive voltage difference is less than maximum negative electricity pressure difference.
In the present embodiment, the size for judging maximum positive voltage difference and maximum negative electricity pressure difference, if maximum positive voltage difference is greater than
When maximum negative electricity pressure difference, it can be confirmed the maximum value of the single battery in battery pack away from the Amplitude Ratio in predetermined voltage threshold section most
Small amplitude of the value away from predetermined voltage threshold section is big, needs first to carry out single battery undesirable in battery pack at this time
Electric discharge, conversely, if needing when maximum positive voltage difference is less than maximum negative electricity pressure difference to single battery undesirable in battery pack
It charges.
In the present embodiment, if maximum positive voltage difference is less than maximum negative electricity pressure difference, preset threshold section is less than to voltage value
Battery to be balanced carry out charge control；If maximum positive voltage difference is greater than maximum negative electricity pressure difference, preset threshold is greater than to voltage value
The battery to be balanced in section carries out control of discharge.
In the present embodiment, management method further include: after the completion of S5, control of discharge or charge control, re-start S1~
S4 is able to achieve the maximum value and minimum value to the voltage of single battery after carrying out a control of discharge and charging control process
The diminution of amplitude carry out the S1~S4 of the present embodiment again again, constantly by after the completion of control of discharge and charge control
The voltage value amplitude of single battery in battery pack is controlled so that the voltage value of each single battery meets predeterminated voltage
Threshold interval.
In the present embodiment, if the voltage value without any single battery is located at outside preset threshold section, by default
After duration, S1~S4 is re-started, to complete the equilibrium to the voltage value of single battery.
In the present embodiment, include: to the method that battery to be balanced discharges
All battery to be balanceds that voltage value is greater than preset threshold section are obtained, as battery to be discharged；By electricity to be discharged
The voltage value in pond to small sequence, successively treating discharge battery and discharge greatly.
In the present embodiment, include: to the method that battery to be balanced charges
All battery to be balanceds that voltage value is less than preset threshold section are obtained, as battery to be charged；By electricity to be charged
The voltage value in pond successively treats rechargeable battery and charges from as low as big sequence.
As shown in Fig. 2, a kind of battery management method provided in an embodiment of the present invention, compared with the management method shown in Fig. 1, area
It is not, battery management method includes:
The voltage value of S21, each single battery of detection.
When being powered by battery pack to load, if the voltage difference of different single batteries is excessive, and from difference
Single battery take electricity be it is balanced, will lead to electricity lesser single battery damage and detect in battery pack in the present embodiment
Each single battery voltage value, it is subsequent to carry out using the voltage value of each single battery as the electricity of the single battery
Step, the voltage value for acquiring each single battery can be obtained by the voltage collecting device being connected on each single battery
It takes.
The voltage value that S22, basis detect searches voltage value and is located at least one monomer outside predetermined voltage threshold section
Battery, as battery to be balanced.
The voltage value of each single battery is compared with predetermined voltage threshold section respectively, voltage value is searched and is located in advance
If the single battery outside voltage threshold section, and as battery to be balanced, in the present embodiment, predetermined voltage threshold section
When can be battery pack stable operation, the voltage value having needed for each single battery, if exceeding the predetermined voltage threshold section,
The such as larger than maximum value in predetermined voltage threshold section, or less than the minimum value in predetermined voltage threshold section, then it is possible that it is single
The excessive situation of voltage difference between body battery, and the voltage difference between different single batteries is excessive, so that battery pack is being discharged
It is possible to damage in the process, needs the voltage progress charge and discharge to battery to be balanced electrically operated, at this time to realize in battery pack
The balance of the voltage of single battery, improves the service life of battery, if voltage value, which is not detected, is not located at predetermined voltage threshold area
Between outer single battery, then single battery at this time not carry out that charge and discharge is electrically operated good to be powered.
S23, the voltage value according to all battery to be balanceds and predetermined voltage threshold section determine maximum positive voltage difference and most
Big negative electricity pressure difference.
In the present embodiment, voltage difference indicates the difference of different voltages, for example, available voltage value is greater than preset threshold
All battery to be balanceds in section, and the maximum value calculation of maximum value and predetermined voltage threshold section in the voltage value is maximum
The maximum value that positive electricity pressure difference, i.e. maximum positive voltage difference are equal in voltage value subtracts the maximum value in predetermined voltage threshold section, if not having
There is the voltage value of balancing battery to be greater than the maximum value in preset threshold section, then the maximum positive voltage difference is 0；Voltage value is obtained to be less than
All battery to be balanceds in preset threshold section, and by the voltage value small value and predetermined voltage threshold section minimum value meter
Maximum negative electricity pressure difference is calculated, i.e., the minimum value that maximum negative electricity pressure difference is equal to predetermined voltage threshold section subtracts the minimum in voltage value
Value, if the voltage value of balancing battery is not less than the minimum value in preset threshold section, which is 0.
S24, judge whether maximum positive voltage difference is less than maximum negative electricity pressure difference.
In the present embodiment, the size for judging maximum positive voltage difference and maximum negative electricity pressure difference, if maximum positive voltage difference is greater than
When maximum negative electricity pressure difference, it can be confirmed the voltage max of the single battery in battery pack away from the amplitude in predetermined voltage threshold section
Amplitude than minimum value away from predetermined voltage threshold section is big, needs at this time first to single battery undesirable in battery pack
It discharges, conversely, if needing when maximum positive voltage difference is less than maximum negative electricity pressure difference to monomer undesirable in battery pack
Battery charges.
If S25, maximum positive voltage difference are greater than or equal to maximum negative electricity pressure difference, all voltage values are obtained greater than preset threshold area
Between battery to be balanced, form battery to be balanced group.
In the present embodiment, when the voltage max of the single battery in battery pack is away from the amplitude in predetermined voltage threshold section
When amplitude than minimum value away from predetermined voltage threshold section is big, maximum value of all voltage values greater than preset threshold section is obtained
All battery to be balanceds form battery to be balanced group.
S26, the battery to be balanced for meeting preset condition is obtained from battery to be balanced group, as battery to be discharged；Wait put
Battery is mutually non-conterminous, and the maximum battery to be balanced of voltage value is battery to be discharged in battery to be balanced group.
In the present embodiment, the battery to be balanced of preset condition will be met as battery to be discharged, wherein preset condition is
Battery to be discharged is mutually non-conterminous, and the maximum battery to be balanced of voltage value is battery to be discharged in battery to be balanced group, to avoid
Treating discharge battery simultaneously and discharge leads to cell damage to be discharged.
As shown in figure 3, in the present embodiment, the method for obtaining the battery to be discharged in battery to be balanced group includes:
S31, the space serial number for obtaining each battery to be balanced in battery to be balanced group.
In the present embodiment, space serial number can obtain to be equalized according to the number of the progress that puts in order of single battery
The space serial number of each battery to be balanced in battery pack.
S32, by the corresponding space serial number of the maximum battery to be balanced of voltage value in battery to be balanced group, as sequence to be discharged
Number.
Since the maximum battery to be balanced of voltage value needs to carry out control of discharge at the first time, so, in the present embodiment,
Using the space serial number of the maximum battery to be balanced of the voltage value in battery to be balanced group as serial number to be discharged.
S33, by the voltage value of battery to be balanced in battery to be balanced group from greatly to small sequence, successively judgement removes voltage value
Whether the space serial number of all battery to be balanceds other than maximum battery to be balanced is non-conterminous with all serial numbers to be discharged.
If so, using the space serial number of battery to be balanced as serial number to be discharged；If it is not, not dealing with.
For example, if the voltage value of the battery to be balanced in battery to be balanced group is from greatly to small sequence, precisely space sequence
Number put in order, i.e. the voltage value of the battery to be balanced of space serial number 1 is maximum, in the present embodiment, it is finally obtained to
Electric discharge serial number 1,3,5,7.......
S34, by the corresponding battery to be balanced of all serial numbers to be discharged, as battery to be discharged.
It is to avoid the battery to be balanced to discharge is adjacent different battery to be balanceds is caused to damage, belt discharge serial number is corresponding
Battery to be balanced as battery to be discharged, avoid cell damage to be discharged.
S27, it discharges all batteries to be discharged, and re-starts S25~S27 until to be equalized after the completion of electric discharge
Battery pack is sky.
It treats discharge battery to discharge, when the voltage of battery to be discharged reaches predetermined voltage threshold section, stops putting
Electricity since battery to be discharged is mutually non-conterminous, while treating discharge battery and carries out electric discharge and will not cause between battery to be discharged mutually
It mutually interferes, improves discharging efficiency, after the completion of a collection of battery discharge to be discharged, carry out the electric discharge of next group battery to be discharged, when
When battery to be balanced group is empty, then account for voltage value is processed greater than all battery to be balanceds in predetermined voltage threshold section
Finish.
As shown in figure 4, a kind of battery management method provided in an embodiment of the present invention, compared with the management method shown in Fig. 1, area
It is not, battery management method includes:
The voltage value of S41, each single battery of detection.
When being powered by battery pack to load, if the voltage difference of different single batteries is excessive, and from difference
Single battery take electricity be it is balanced, will lead to electricity lesser single battery damage and detect in battery pack in the present embodiment
Each single battery voltage value, it is subsequent to carry out using the voltage value of each single battery as the electricity of the single battery
Step, the voltage value for acquiring each single battery can be obtained by the voltage collecting device being connected on each single battery
It takes.
The voltage value that S42, basis detect searches voltage value and is located at least one monomer outside predetermined voltage threshold section
Battery, as battery to be balanced.
The voltage value of each single battery is compared with predetermined voltage threshold section respectively, voltage value is searched and is located in advance
If the single battery outside voltage threshold section, and as battery to be balanced, in the present embodiment, predetermined voltage threshold section
When can be battery pack stable operation, the voltage value having needed for each single battery, if exceeding the predetermined voltage threshold section,
The such as larger than maximum value in predetermined voltage threshold section, or less than the minimum value in predetermined voltage threshold section, then it is possible that it is single
The excessive situation of voltage difference between body battery, and the voltage difference between different single batteries is excessive, so that battery pack is being discharged
It is possible to damage in the process, needs the voltage progress charge and discharge to battery to be balanced electrically operated, at this time to realize in battery pack
The balance of the voltage of single battery, improves the service life of battery, if voltage value, which is not detected, is not located at predetermined voltage threshold area
Between outer single battery, then single battery at this time not carry out that charge and discharge is electrically operated good to be powered.
S43, the voltage value according to all battery to be balanceds and predetermined voltage threshold section determine maximum positive voltage difference and most
Big negative electricity pressure difference.
In the present embodiment, voltage difference indicates the difference of different voltages, for example, available voltage value is greater than preset threshold
All battery to be balanceds in section, and the maximum value calculation of maximum value and predetermined voltage threshold section in the voltage value is maximum
The maximum value that positive electricity pressure difference, i.e. maximum positive voltage difference are equal in voltage value subtracts the maximum value in predetermined voltage threshold section, if not having
There is the voltage value of balancing battery to be greater than the maximum value in preset threshold section, then the maximum positive voltage difference is 0；Voltage value is obtained to be less than
All battery to be balanceds in preset threshold section, and by the voltage value small value and predetermined voltage threshold section minimum value meter
Maximum negative electricity pressure difference is calculated, i.e., the minimum value that maximum negative electricity pressure difference is equal to predetermined voltage threshold section subtracts the minimum in voltage value
Value, if the voltage value of balancing battery is not less than the minimum value in preset threshold section, which is 0.
S44, judge whether maximum positive voltage difference is less than maximum negative electricity pressure difference.
In the present embodiment, the size for judging maximum positive voltage difference and maximum negative electricity pressure difference, if maximum positive voltage difference is greater than
When maximum negative electricity pressure difference, it can be confirmed the voltage max of the single battery in battery pack away from the amplitude in predetermined voltage threshold section
Amplitude than minimum value away from predetermined voltage threshold section is big, needs at this time first to single battery undesirable in battery pack
It discharges, conversely, if needing when maximum positive voltage difference is less than maximum negative electricity pressure difference to monomer undesirable in battery pack
Battery charges.
S45, when maximum pressure difference on schedule is less than maximum negative electricity pressure difference, obtain all voltage values less than preset threshold section
All battery to be balanceds form battery to be balanced group.
In the present embodiment, when the voltage max of the single battery in battery pack is away from the amplitude in predetermined voltage threshold section
Amplitude hour than minimum value away from predetermined voltage threshold section obtains minimum value of all voltage values less than preset threshold section
All battery to be balanceds form battery to be balanced group.
S46, the battery to be balanced for meeting preset condition is obtained from battery to be balanced group, as battery to be charged；Wait fill
Battery is mutually non-conterminous, and the maximum battery to be balanced of the voltage value in battery to be balanced group is battery to be charged.
In the present embodiment, the battery to be balanced of preset condition will be met as battery to be charged, wherein preset condition is
Battery to be charged is mutually non-conterminous, and the smallest battery to be balanced of voltage value is battery to be charged in battery to be balanced group, to avoid
Treating rechargeable battery simultaneously and charge leads to cell damage to be charged.
As shown in figure 5, in the present embodiment, the method for obtaining the battery to be charged in battery to be balanced group includes:
S51, the space serial number for obtaining each battery to be balanced in battery to be balanced group.
In the present embodiment, space serial number can obtain to be equalized according to the number of the progress that puts in order of single battery
The space serial number of each battery to be balanced in battery pack.
S52, by the corresponding space serial number of the smallest battery to be balanced of voltage value in battery to be balanced group, as to be charged
Serial number.
Since the smallest battery to be balanced of voltage value needs to carry out charge control at the first time, so, in the present embodiment,
Using the space serial number of the smallest battery to be balanced of the voltage value in battery to be balanced group as serial number to be discharged.
S53, by the voltage value of battery to be balanced in battery to be balanced group from as low as big sequence, successively judgement removes voltage value
Whether the space serial number of all battery to be balanceds other than the smallest battery to be balanced is non-conterminous with all serial numbers to be charged.
If so, using the space serial number of battery to be balanced as serial number to be charged；If it is not, not dealing with.
For example, if the voltage value of the battery to be balanced in battery to be balanced group is from as low as big sequence, precisely space sequence
Number put in order, i.e. the voltage value of the battery to be balanced of space serial number 1 is minimum, finally obtained serial number to be charged 1,3,
5、7......。
S54, by the corresponding battery to be balanced of all serial numbers to be charged, as battery to be charged.
It, will be corresponding with charging serial number to avoid the battery to be balanced to charge is adjacent different battery to be balanceds is caused to damage
Battery to be balanced as battery to be charged, avoid cell damage to be charged.
S47, it charges to all batteries to be charged, and re-starts S45~S47 until to equal after the completion of charging electricity
The battery pack that weighs is sky.
It treats rechargeable battery to charge, when the voltage of battery to be charged reaches predetermined voltage threshold section, stops filling
Electricity since battery to be charged is mutually non-conterminous, while treating rechargeable battery and carries out charging and will not cause between battery to be charged mutually
It mutually interferes, improves charge efficiency, after a batch battery charging complete to be charged, carry out the charging of next group battery to be charged, when
When battery to be balanced group is empty, then account for voltage value is processed greater than all battery to be balanceds in predetermined voltage threshold section
Finish.
As shown in fig. 6, the embodiment of the invention provides a kind of battery management system, battery management system include processor,
Memory；Processor is for executing the battery management program stored in memory, to realize the cell tube of any of the above-described embodiment
Reason method.
To in above-described embodiment system or device provide for recording the software of the function that above-described embodiment may be implemented
The storage medium of the program code of program, and read and execute by the computer (or CPU or MPU) of system or device and be stored in
Program code in storage medium.
In this case, the function of above-described embodiment is executed from the program code itself that storage medium is read, and stored
The storage medium of program code constitutes the embodiment of the present invention.
As for providing the storage medium of program code, for example, floppy disk, hard disk, CD, magneto-optic disk, CD-ROM, CD-R,
Tape, Nonvolatile memory card, ROM, and the like can use.
The function of above-described embodiment can not only realize by executing the program code read by computer, Er Qieke
To pass through at some or all of reality of the OS (operating system) run on computers according to the instruction execution of program code
Reason operation is to realize.
In addition, being write in the program code read from storage medium the embodiment of the invention also includes such a case
Enter to be inserted into after the function expansion card of computer, or depositing of providing in the functional expansion unit being connected with computer is provided
After reservoir, CPU for including in function expansion card or functional expansion unit or the like is executed according to the order of program code
Part processing or all processing, to realize the function of above-described embodiment.
The embodiment of the invention provides a kind of computer can storage medium, computer can storage medium be stored with one or
Multiple programs, one or more program can be executed by one or more processor, to realize the electricity of any of the above-described embodiment
Pond management method.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of battery management method, applied to the battery pack with multiple single batteries, which is characterized in that the management method
Include:
The voltage value of S1, each single battery of detection；
The voltage value that S2, basis detect searches voltage value and is located at least one single battery outside predetermined voltage threshold section,
As battery to be balanced；
S3, the voltage value according to all battery to be balanceds and the predetermined voltage threshold section, determine that maximum positive voltage is poor
With maximum negative electricity pressure difference；
S4, judge whether the maximum positive voltage difference is less than the maximum negative electricity pressure difference；
If so, the battery to be balanced for being less than the preset threshold section to voltage value carries out charge control；If it is not, big to voltage value
Battery to be balanced in the preset threshold section carries out control of discharge.
2. battery management method according to claim 1, which is characterized in that described to be greater than the preset threshold to voltage value
The battery to be balanced in section carries out control of discharge, comprising:
S21, the battery to be balanced that all voltage values are greater than the preset threshold section is obtained, forms battery to be balanced group；
S22, the battery to be balanced for meeting preset condition is obtained from the battery to be balanced group, as battery to be discharged；It is described
Battery to be discharged is mutually non-conterminous, and the maximum battery to be balanced of voltage value is battery to be discharged in the battery to be balanced group；
S23, discharge all batteries to be discharged, and re-start after the completion of electric discharge S21~S23 until it is described to
Balancing battery group is sky.
3. battery management method according to claim 2, which is characterized in that described to be obtained from the battery to be balanced group
The battery to be balanced for meeting preset condition, as battery to be discharged；The battery to be discharged is mutually non-conterminous, and the electricity to be equalized
The maximum battery to be balanced of Chi Zuzhong voltage value is battery to be discharged, comprising:
S31, the space serial number for obtaining each battery to be balanced in the battery to be balanced group；
S32, by the corresponding space serial number of the maximum battery to be balanced of voltage value in the battery to be balanced group, as
Serial number to be discharged；
S33, by the voltage value of battery to be balanced in the battery to be balanced group from greatly to small sequence, successively judgement removes voltage value
The space serial number of all battery to be balanceds other than the maximum battery to be balanced whether with all serial numbers to be discharged not
It is adjacent；
If so, using the space serial number of the battery to be balanced as serial number to be discharged；If it is not, not dealing with；
S34, by the corresponding battery to be balanced of all serial numbers to be discharged, as battery to be discharged.
4. battery management method according to claim 1, which is characterized in that described to be greater than the preset threshold to voltage value
The battery to be balanced in section carries out control of discharge, comprising:
All battery to be balanceds that voltage value is greater than the preset threshold section are obtained, as battery to be discharged；
Voltage value by the battery to be discharged is to small sequence, successively discharging to the battery to be discharged greatly.
5. battery management method according to claim 1, which is characterized in that described to be less than the preset threshold to voltage value
The battery to be balanced in section carries out charge control, comprising:
S41, all battery to be balanceds that all voltage values are less than the preset threshold section are obtained, forms battery to be balanced
Group；
S42, the battery to be balanced for meeting preset condition is obtained from the battery to be balanced group, as battery to be charged；It is described
Battery to be charged is mutually non-conterminous, and the maximum battery to be balanced of voltage value in the battery to be balanced group is battery to be charged；
S43, it charges to all batteries to be charged, and re-starts S41~S43 until described after the completion of charging electricity
Battery to be balanced group is sky.
6. battery management method according to claim 5, which is characterized in that described to be obtained from the battery to be balanced group
The battery to be balanced for meeting preset condition, as battery to be charged；The battery to be charged is mutually non-conterminous, and the electricity to be equalized
The maximum battery to be balanced of the voltage value of Chi Zuzhong is battery to be charged, comprising:
S51, the space serial number for obtaining each battery to be balanced in the battery to be balanced group；
S52, by the corresponding space serial number of the smallest battery to be balanced of voltage value in the battery to be balanced group, as to
Charge serial number；
S53, by the voltage value of battery to be balanced in the battery to be balanced group from as low as big sequence, successively judgement removes voltage value
The space serial number of all battery to be balanceds other than the smallest battery to be balanced whether with all sequences to be charged
It is number non-conterminous；
If so, using the space serial number of the battery to be balanced as serial number to be charged；If it is not, not dealing with；
S54, by the corresponding battery to be balanced of all serial numbers to be charged, as battery to be charged.
7. battery management method according to claim 1, which is characterized in that described to be less than the preset threshold to voltage value
The battery to be balanced in section carries out charge control, comprising:
All battery to be balanceds that voltage value is less than the preset threshold section are obtained, as battery to be charged；
By the voltage value of the battery to be charged from as low as big sequence, successively charge to the battery to be charged.
8. any battery management method according to claim 1~7, which is characterized in that the management method further include:
When the voltage value for not having any single battery is located at outside the preset threshold section, after being spaced preset duration,
Re-execute S1~S4；
The management method further include:
After the completion of S5, control of discharge or charge control, S1~S4 is re-started.
9. a kind of battery management system, which is characterized in that the battery management system includes processor, memory；The processing
Device is for executing the battery management program stored in the memory, to realize battery according to any one of claims 1 to 8
Management method.
10. a kind of computer can storage medium, which is characterized in that the computer can storage medium be stored with one or more
Program, one or more of programs can be executed by one or more processor, any in claim 1~8 to realize
Battery management method described in.
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| CN201811467514.2A CN109638906B (en) | 2018-12-03 | 2018-12-03 | Battery management method, system and storage medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561846A (en) * | 2020-04-29 | 2021-10-29 | 微宏动力系统（湖州）有限公司 | Battery pack charging control method and battery pack discharging control method |
| CN115360793A (en) * | 2022-09-15 | 2022-11-18 | 湖北亿纬动力有限公司 | Battery pack balancing method and device, battery system and storage medium |
| CN117200406A (en) * | 2023-11-08 | 2023-12-08 | 珠海市嘉德电能科技有限公司 | Battery voltage balance control method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553009A (en) * | 2015-12-26 | 2016-05-04 | 惠州市蓝微新源技术有限公司 | Equalization circuit for rapidly balancing battery pack of switch array and control method |
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2018
- 2018-12-03 CN CN201811467514.2A patent/CN109638906B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553009A (en) * | 2015-12-26 | 2016-05-04 | 惠州市蓝微新源技术有限公司 | Equalization circuit for rapidly balancing battery pack of switch array and control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561846A (en) * | 2020-04-29 | 2021-10-29 | 微宏动力系统（湖州）有限公司 | Battery pack charging control method and battery pack discharging control method |
| CN115360793A (en) * | 2022-09-15 | 2022-11-18 | 湖北亿纬动力有限公司 | Battery pack balancing method and device, battery system and storage medium |
| CN115360793B (en) * | 2022-09-15 | 2024-06-11 | 湖北亿纬动力有限公司 | Battery pack equalization method, device, battery system and storage medium |
| CN117200406A (en) * | 2023-11-08 | 2023-12-08 | 珠海市嘉德电能科技有限公司 | Battery voltage balance control method, device, equipment and storage medium |
| CN117200406B (en) * | 2023-11-08 | 2024-03-08 | 珠海市嘉德电能科技有限公司 | Battery voltage balance control method, device, equipment and storage medium |
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| CN109638906B (en) | 2020-10-23 |
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