CN108599295A - Battery pack charging method, device and equipment - Google Patents
Battery pack charging method, device and equipment Download PDFInfo
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- CN108599295A CN108599295A CN201810355269.XA CN201810355269A CN108599295A CN 108599295 A CN108599295 A CN 108599295A CN 201810355269 A CN201810355269 A CN 201810355269A CN 108599295 A CN108599295 A CN 108599295A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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Abstract
The embodiment of the invention discloses a battery pack charging method, a battery pack charging device and battery pack charging equipment. The charging method comprises the following steps: detecting the highest cell single voltage of the battery pack; if the highest single cell voltage reaches the initial current-limiting voltage, the current-limiting value of the battery pack is reduced, and the current-limiting voltage of the battery pack is increased; and if the highest single cell voltage reaches the increased charging current-limiting voltage, continuously reducing the current-limiting value of the battery pack and increasing the current-limiting voltage of the battery pack until the newly reduced current-limiting value reaches the minimum current-limiting value or the newly increased current-limiting voltage reaches the charging stop voltage, and stopping charging the battery pack. By adopting the technical scheme in the embodiment of the invention, the charging current at the last charging stage of the battery pack can be controlled, and the charging and discharging capacity of the battery pack is improved.
Description
Technical field
The present invention relates to a kind of battery technology field more particularly to method for charging battery pack, device and equipment.
Background technology
As the non-renewable energy resources such as oil gradually use up, electric power energy such as lithium-ion-power cell is in new energy market
On enjoy great popularity, since the battery core capacity of the large-scale energy-storage system such as lithium-ion-power cell is bigger, to shorten the charge and discharge time,
Charging strategy in the prior art is：It is persistently charged with larger electric current when charging, is filled until monomer ceiling voltage reaches stopping
Stop charging when piezoelectric voltage.
But the inventors of the present application found that for battery, charging current leads to the line pressure of battery system compared with conference
Drop and polarizing voltage are also larger, and line pressure drop or polarizing voltage are larger, can make the collected battery cell electricity of latter stage of charging
The virtual voltage of pressure ratio battery core is much higher, and when being easy to cause battery stopping charging, actual battery core voltage does not reach stopping
Charging voltage, that is to say, that there is no be really full of battery so that the charge/discharge capacity of battery is reduced.
Invention content
An embodiment of the present invention provides a kind of method for charging battery pack, device and equipment, can control filling for latter stage of charging
Electric current, it is larger to avoid that there is a situation where charging currents, so as to improve the charge/discharge capacity of battery pack.
In a first aspect, the embodiment of the present invention provides a kind of method for charging battery pack, battery pack is by least two battery core monomers
It connects and/or composes in parallel, which includes：
Detect the highest battery core monomer voltage of battery pack；
If highest battery core monomer voltage reaches initial limit voltage, turns down the cut-off current of battery pack and battery pack is turned up
Limit voltage；
If highest battery core monomer voltage reaches the charging current limiter voltage after being turned up, continue to turn down the cut-off current of battery pack simultaneously
The limit voltage of battery pack is turned up, when the cut-off current after new turn down reaches minimum cut-off current, alternatively, until new height-regulating
When limit voltage afterwards reaches charging stopping voltage, stop charging to battery pack.
In a kind of possible embodiment of first aspect, the cut-off current of battery pack is turned down, including：By working as battery pack
Preceding cut-off current is multiplied by predetermined factor, the cut-off current after being turned down, and predetermined factor is more than 0 and is less than 1.
In a kind of possible embodiment of first aspect, the limit voltage of battery pack is turned up, including：By battery pack
Current limit voltage increases predetermined value, the limit voltage after being turned up, and predetermined value is more than 0.
In a kind of possible embodiment of first aspect, after stopping charging to battery pack, battery pack charging
Method further includes：Judge whether highest battery core monomer voltage is less than preset charging and restores voltage；If highest battery core monomer voltage
Restore voltage less than charging, then current cut-off current is reverted into minimum cut-off current, to restore to charge to battery pack.
In a kind of possible embodiment of first aspect, after stopping charging to battery pack, battery pack charging
Method further includes：Judge whether highest battery core monomer voltage is less than preset charging and restores voltage；If highest battery core monomer voltage
Restore voltage no less than charging, then judge whether battery pack is in discharge condition, and continuous discharge duration has reached first and makes a reservation for
Duration；If battery pack is in discharge condition, and continuous discharge duration has reached the first scheduled duration, then restores current cut-off current
For minimum cut-off current, charged to battery pack with recovery.
In a kind of possible embodiment of first aspect, after stopping charging to battery pack, battery pack charging
Method further includes：Detect the minimum battery core monomer voltage of battery pack；Judge whether minimum battery core monomer voltage is more than preset put
Electricity restores voltage；If minimum battery core monomer voltage, which is more than electric discharge, restores voltage, current cut-off current is reverted into minimum cut-off current,
To restore to battery power discharge.
In a kind of possible embodiment of first aspect, which further includes：Judge battery pack
Whether minimum battery core monomer voltage, which is more than preset electric discharge, is restored voltage；If minimum battery core monomer voltage, which is not more than electric discharge, restores electricity
Pressure, then judge whether battery pack is in charged state, and persistently charging duration has reached the second scheduled duration；If battery pack is in
Charged state, and persistently charging duration has reached the second scheduled duration, then current cut-off current is reverted to minimum cut-off current, with extensive
Multiple battery power discharge.
Second aspect, the embodiment of the present invention provide a kind of battery pack charging device, which includes：
First detection module, the highest battery core monomer voltage for detecting battery pack；
Adjustment module turns down the cut-off current of battery pack if reaching initial limit voltage for highest battery core monomer voltage,
And the limit voltage of battery pack is turned up；
Module is adjusted, if being additionally operable to highest battery core monomer voltage reaches the charging current limiter voltage after being turned up, continues to turn down
The cut-off current of battery pack, and the limit voltage of battery pack is turned up, when the cut-off current after new turn down reaches minimum cut-off current,
Alternatively, when the limit voltage after new height-regulating reaches charging stopping voltage, stop charging to battery pack.
In a kind of possible embodiment of second aspect, which further includes：First judgment module,
Restore voltage for judging whether highest battery core monomer voltage is less than preset charging；First recovery module, if for highest electricity
Core monomer voltage is less than charging and restores voltage, then current cut-off current is reverted to minimum cut-off current, to restore to charge to battery pack.
In a kind of possible embodiment of second aspect, which further includes：Second judgment module,
Restore voltage for judging whether highest battery core monomer voltage is less than preset charging；Second judgment module, if for highest electricity
Core monomer voltage restores voltage no less than charging, then judges whether battery pack is in discharge condition, and continuous discharge duration has reached
To the first scheduled duration；Second recovery module, if it is in discharge condition for battery pack, and continuous discharge duration has reached first
Current cut-off current is then reverted to minimum cut-off current by scheduled duration, to restore to charge to battery pack.
In a kind of possible embodiment of second aspect, which further includes：Second detection module,
Minimum battery core monomer voltage for detecting battery pack；4th judgment module, the minimum battery core monomer electricity for judging battery pack
Whether pressure, which is more than preset electric discharge, is restored voltage；Third recovery module is restored if being more than electric discharge for minimum battery core monomer voltage
Current cut-off current is then reverted to minimum cut-off current by voltage, to restore to battery power discharge.
In a kind of possible embodiment of second aspect, which further includes：5th judgment module,
Restore voltage for judging whether the minimum battery core monomer voltage of battery pack is more than preset electric discharge；6th judgment module, is used for
If minimum battery core monomer voltage, which is not more than electric discharge, restores voltage, judge whether battery pack is in charged state, and lasting charging
Duration has reached the second scheduled duration；4th recovery module if being in charged state for battery pack, and persistently charges duration
Reach the second scheduled duration, then current cut-off current is reverted into minimum cut-off current, to restore to battery power discharge.
The third aspect, the embodiment of the present invention provide a kind of battery pack charging devices of, which includes storage
Device and processor；Memory is for storing executable program code；Processor be used to read stored in memory it is executable
Program code is to execute method for charging battery pack as described above.
As described above, in order to avoid there is a situation where the charging current of latter stage of charging battery pack is excessive, the embodiment of the present invention
The highest battery core monomer voltage for detecting battery pack first, judges whether highest battery core monomer voltage reaches initial limit voltage；If
Highest battery core monomer voltage reaches initial limit voltage, then turns down the cut-off current of battery pack and the limit voltage of battery pack is turned up；
It then proceedes to judge the limit voltage whether highest battery core monomer voltage reaches after being turned up, if highest battery core monomer voltage reaches tune
Charging current limiter voltage after height, then continue the limit voltage turned down the cut-off current of battery pack and battery pack is turned up, until new tune
When cut-off current after low reaches minimum cut-off current, alternatively, when the limit voltage after new height-regulating reaches charging stopping voltage,
Stop charging to battery pack.
Due to the embodiment of the present invention segmentation be turned up battery pack limit voltage by way of to battery pack latter stage of charging into
It has gone current limliting processing, has enabled to the confined very little of the charging current of latter stage of charging battery pack, i.e. line pressure drop and polarizing voltage
With regard to very little, so that virtual voltage of the battery pack latter stage of charging sampled voltage close to battery core, so that battery pack stopping is filled
Battery core can be charged into more electricity when electric, can improve the dischargeable capacity of battery pack.
Description of the drawings
From below in conjunction with the accompanying drawings to the present invention specific implementation mode description in may be better understood the present invention wherein,
Same or analogous reference numeral indicates same or analogous feature.
Fig. 1 is the flow diagram for the method for charging battery pack that one embodiment of the invention provides；
Fig. 2 is showing of changing over time of cut-off current and limit voltage in battery pack charging process provided in an embodiment of the present invention
It is intended to；
Fig. 3 is the flow diagram for the method for charging battery pack that another embodiment of the present invention provides；
Fig. 4 is the flow diagram for the method for charging battery pack that further embodiment of this invention provides；
Fig. 5 is the structural schematic diagram for the battery pack charging device that one embodiment of the invention provides；
Fig. 6 is the structural schematic diagram for the battery pack charging device that another embodiment of the present invention provides；
Fig. 7 is the structural schematic diagram for the battery pack charging device that further embodiment of this invention provides.
Specific implementation mode
The feature and exemplary embodiment of the various aspects of the embodiment of the present invention is described more fully below.Following detailed
In description, it is proposed that many details, in order to provide the comprehensive understanding to the embodiment of the present invention.
A kind of method for charging battery pack of offer of the embodiment of the present invention, device and equipment, are suitable for the charge and discharge skill of battery pack
Art field can control the charging current of latter stage of charging battery, avoid the charging current that latter stage of charging battery pack occurs excessive
Situation, so as to avoid line pressure drop or polarizing voltage caused by charging current is excessive excessive so that battery pack stops
Collected highest battery core monomer voltage is higher when charging, and actual battery core voltage does not reach the feelings for stopping charging voltage
Condition, and then the dischargeable capacity of battery pack can be improved..
For scale, battery pack is monomer series-connected and/or compose in parallel by least two battery cores.It should be noted that this
Battery core in inventive embodiments can be lithium ion battery, lithium metal battery, lead-acid battery, nickel separation cell, Ni-MH battery, lithium sulphur
Battery, lithium-air battery or sodium-ion battery, do not limit herein.
Fig. 1 is the flow diagram for the method for charging battery pack that one embodiment of the invention provides.As shown in Figure 1, the battery
Group charging method includes step 101 to step 106.
In a step 101, the highest battery core monomer voltage of battery pack is detected.Wherein, highest battery core monomer voltage refers to
The voltage of the highest battery core monomer of voltage in all battery core monomers of battery pack.
In a step 102, judge whether highest battery core monomer voltage reaches initial limit voltage.If highest battery core monomer electricity
Pressure reaches preset initial limit voltage, thens follow the steps 103, otherwise, return to step 102.
In step 103, the cut-off current of battery pack is turned down, and the limit voltage of battery pack is turned up.
In one embodiment, the current cut-off current of battery pack can be multiplied by the current limliting after predetermined factor is turned down
Value, wherein predetermined factor is more than 0 and is less than 1.Those skilled in the art can also select suitable cut-off current according to actual needs
Method for turning down sound, herein without limiting.
In one embodiment, the current limit voltage of battery pack can also be increased to the predetermined current limliting being worth to after being turned up
Voltage, wherein predetermined value is more than 0.Those skilled in the art can also select suitable limit voltage to be turned up according to actual needs
Method, herein without limiting.
At step 104, judge whether highest battery core monomer voltage reaches the limit voltage after being turned up.If highest battery core list
Bulk voltage reaches the charging current limiter voltage after being turned up, and thens follow the steps 105, otherwise, return to step 104.
In step 105, judge whether the cut-off current after new turn down reaches minimum cut-off current, if it is new turn down after limit
Flow valuve reaches minimum cut-off current, thens follow the steps 106；Stop alternatively, whether the limit voltage after new height-regulating reaches charging
Only voltage executes step 106, otherwise, return to step 103.
In step 106, stop charging to battery pack.
As described above, in order to avoid there is a situation where the charging current of latter stage of charging battery pack is excessive, the embodiment of the present invention
The highest battery core monomer voltage for detecting battery pack first, judges whether highest battery core monomer voltage reaches initial limit voltage；If
Highest battery core monomer voltage reaches initial limit voltage, then turns down the cut-off current of battery pack and the limit voltage of battery pack is turned up；
It then proceedes to judge the limit voltage whether highest battery core monomer voltage reaches after being turned up, if highest battery core monomer voltage reaches tune
Charging current limiter voltage after height, then continue the limit voltage turned down the cut-off current of battery pack and battery pack is turned up, until new tune
When cut-off current after low reaches minimum cut-off current, alternatively, when the limit voltage after new height-regulating reaches charging stopping voltage,
Stop charging to battery pack.
Due to the embodiment of the present invention segmentation be turned up battery pack limit voltage by way of to battery pack latter stage of charging into
It has gone current limliting processing, has enabled to the confined very little of the charging current of latter stage of charging battery pack, i.e. line pressure drop and polarizing voltage
With regard to very little, so that virtual voltage of the battery pack latter stage of charging sampled voltage close to battery core, so that battery pack stopping is filled
Battery core can be charged into more electricity when electric, can improve the dischargeable capacity of battery pack.
Further, since the embodiment of the present invention has carried out the processing of segmentation current limliting to battery pack latter stage of charging so that latter stage of charging
The charging current control of battery pack has higher sensitivity, so as to ensure the response time (i.e. between computation delay) it is interior will not
The problem of causing battery pack to overcharge.
In addition, since the embodiment of the present invention is just to start to carry out segmentation current limliting to the charging current of battery pack in latter stage of charging
Processing, therefore the entire charge cycle of battery pack will not be influenced too much.
For ease of it will be appreciated by those skilled in the art that being carried out with reference to Fig. 2 technical solution in the embodiment of the present invention detailed
It describes in detail bright.Fig. 2 is showing of changing over time of cut-off current and limit voltage in battery pack charging process provided in an embodiment of the present invention
It is intended to.Curve S1 in Fig. 2 indicates that the highest battery core monomer voltage of the battery pack detected in charging process, curve S2 expressions fill
The variation of cut-off current in electric process.
First, it is determined that whether the highest battery core monomer voltage in battery pack charging process reaches initial limit voltage U0If
Highest battery core monomer voltage reaches initial limit voltage U0, then by the initial cut-off current I of battery pack0It turns down as cut-off current I1.Than
It such as, can be by initial cut-off current I0It is multiplied by predetermined factor 80%, obtains cut-off current I1, and by initial limit voltage U0Height-regulating is limited
Galvanic electricity presses U1.For example, can be by limit voltage U0Increase predetermined value 50V, obtains limit voltage U1。
Then, continue to judge whether the highest battery core monomer voltage in battery pack charging process reaches limit voltage U1If
Highest battery core monomer voltage reaches limit voltage U1, then by cut-off current I1It turns down as cut-off current I2.For example, can be by cut-off current I1
It is multiplied by predetermined factor 80%, obtains cut-off current I2, and by limit voltage U1It is limit voltage U to be turned up2.For example, can be by U1Increase
Predetermined value 50V obtains limit voltage U2。
Next, continuing to judge whether the highest battery core monomer voltage in battery pack charging process reaches limit voltage U2,
If highest battery core monomer voltage reaches limit voltage U2, then by cut-off current I2It turns down as cut-off current I3.For example, can be by cut-off current
I2It is multiplied by predetermined factor 80%, obtains cut-off current I3, and by limit voltage U2It is limit voltage U to be turned up3.For example, can be by U2Increase
Add predetermined value 50V, obtains limit voltage U3。
According to an embodiment of the invention, the cut-off current after new turn down reaches minimum cut-off current IminWhen, alternatively, directly
Limit voltage after to new height-regulating reaches charging and stops voltage UtWhen, stop charging to battery pack.
It should be noted that the mode for turning down cut-off current in the embodiment of the present invention and the mode of limit voltage not office is turned up
Be limited to the above mode, for example, can also be variation for the predetermined factor that is multiplied with current cut-off current, be used for
The predetermined value that current limit voltage is added can also be variation, or it can also be to subtract one in advance to turn down the mode of cut-off current
Definite value, or it can also be to be multiplied by a predetermined factor that the mode of cut-off current, which is turned up, herein without limiting.
In the prior art, after stopping charging to battery pack, battery core voltage will slowly drop to platform area, limit electric current meeting
Larger current value is reverted to, to charge again to battery pack.But since battery core is close to being full of at this time, if electric current
Value is restored to higher value, battery core can be caused to be overcharged because of charging back and forth, influences the service life of battery pack.
Fig. 3 is the flow diagram for the method for charging battery pack that another embodiment of the present invention provides.The difference of Fig. 3 and Fig. 1
Place is, after step 106 in Fig. 1, the method for charging battery pack in Fig. 3 further includes step 107 and step 108, is used
It is limited in the recovery of the charging current limiter value to battery pack, to avoid recharging because of battery pack latter stage of charging in the prior art
The problem of battery pack service life reduces caused by electricity.
In step 107, judge whether highest battery core monomer voltage is less than preset charging and restores voltage.If highest battery core
Monomer voltage is less than charging and restores voltage, thens follow the steps 108, otherwise, return to step 107.
In step 108, current cut-off current is reverted into minimum cut-off current Imin, to restore to charge to battery pack.
That is, if the highest battery core monomer voltage of battery pack is less than charging and restores voltage, restore to battery pack
Charging, and by minimum cut-off current IminAs current cut-off current, to ensure in the higher feelings of battery pack maximum battery core monomer voltage
(for example, battery pack is used only very in short-term after voltage falls after rise or is fully charged naturally when battery pack is not used after fully charged under condition
Between), it can be charged to battery pack with smaller electric current recovery value.
Fig. 4 is the flow diagram for the method for charging battery pack that further embodiment of this invention provides, for optimizing to battery
The recovery restricted version of the charging current limiter value of group, is more in line with the practical application of battery pack.Fig. 4 the difference from Fig. 3 is that,
After step 107 in figure 3, if highest battery core monomer voltage is more than or equal to preset charging and restores voltage, execute
Step 109 in Fig. 4.
In step 109, judge whether battery pack is in discharge condition, and continuous discharge duration has reached the first pre- timing
It is long.If battery pack is in discharge condition, and continuous discharge duration has reached the first scheduled duration, thens follow the steps 108, will be current
Cut-off current reverts to minimum cut-off current Imin, to restore to charge to battery pack, otherwise, return to step 107.
That is, if the highest battery core monomer voltage of battery pack is more than or equal to charging and restores voltage, into one
Step confirms whether battery pack is in discharge condition, and continuous discharge duration has reached the first scheduled duration, is put if battery pack is in
Electricity condition, and continuous discharge duration has reached the first scheduled duration can then restore to charge to battery pack, and by minimum cut-off current
IminIt is higher in battery pack maximum battery core monomer voltage to ensure as current cut-off current, it can be with smaller electric current
Restore to charge to battery pack, while relaxing the restrictive condition that charging restores.
Similarly, it is contemplated that after battery pack charging can to load discharge, to avoid electric discharge latter stage, limitation stream revert to compared with
Big current value to battery power discharge, causes battery core to cross and put close to charging back and forth when emptying, influences the use of battery pack again
Service life, the embodiment of the present invention additionally provide the recovery control method of the electric discharge cut-off current to battery pack.
In some embodiments, which includes：Judge whether the minimum battery core monomer voltage of battery pack is big
Restore voltage in preset electric discharge；If minimum battery core monomer voltage, which is more than electric discharge, restores voltage, current cut-off current is reverted to
Minimum cut-off current Imin, to restore to battery power discharge, to avoid due to battery power discharge latter stage in the prior art discharges back and forth
The problem of caused battery pack service life reduces.
In further embodiments, which is less than or equal to electric discharge recovery voltage, then further
Judge whether battery pack is in charged state, and persistently charging duration has reached the second scheduled duration.If battery pack is in charging
State, and persistently charging duration has reached the second scheduled duration, then current cut-off current is reverted to minimum cut-off current Imin, with extensive
It is multiple to battery power discharge, to avoid discharge back and forth because of battery power discharge latter stage in the prior art caused by battery pack use the longevity
The problem of life reduces, while relaxing the restrictive condition that electric discharge restores.
Fig. 5 is the structural schematic diagram for the battery pack charging device that one embodiment of the invention provides.Battery pack shown in Fig. 5
Charging unit includes first detection module 501 and adjustment module 502.
Wherein, first detection module 501 is used to detect the highest battery core monomer voltage of battery pack.
If adjustment module 502 reaches initial limit voltage for highest battery core monomer voltage, the current limliting of battery pack is turned down
Value, and the limit voltage of battery pack is turned up.
If adjustment module 502, which is additionally operable to highest battery core monomer voltage, reaches the charging current limiter voltage after being turned up, continue to adjust
The cut-off current of low battery pack, and the limit voltage of battery pack is turned up, the cut-off current after new turn down reach minimum cut-off current
When, alternatively, when the limit voltage after new height-regulating reaches charging stopping voltage, stop charging to battery pack.
Fig. 6 is the structural schematic diagram for the battery pack charging device that another embodiment of the present invention provides.The difference of Fig. 6 and Fig. 5
Place is that battery pack charging device shown in Fig. 6 further includes the first judgment module 503 and the first recovery module 504.
Wherein, the first judgment module 503 restores electricity for judging whether highest battery core monomer voltage is less than preset charging
Pressure；
If the first recovery module 504 is less than charging for highest battery core monomer voltage restores voltage, by current cut-off current
Revert to minimum cut-off current Imin, to restore to charge to battery pack.
Fig. 7 is the structural schematic diagram for the battery pack charging device that further embodiment of this invention provides.The difference of Fig. 7 and Fig. 5
Place is that battery pack charging device shown in Fig. 7 further includes the second judgment module 505, third judgment module 506 and second
Recovery module 507.
Wherein, the second judgment module 505 restores electricity for judging whether highest battery core monomer voltage is less than preset charging
Pressure；
If third judgment module 506 restores voltage for highest battery core monomer voltage no less than charging, battery pack is judged
Whether discharge condition is in, and continuous discharge duration has reached the first scheduled duration.
If the second recovery module 507 is in discharge condition for battery pack, and continuous discharge duration has reached first and makes a reservation for
Current cut-off current is then reverted to minimum cut-off current I by durationmin, to restore to charge to battery pack.
In some embodiments of the invention, battery pack charging device further includes the second detection module, the 4th judgment module
With third recovery module (not shown), wherein the second detection module is used to detect the minimum battery core monomer voltage of battery pack.
4th judgment module is used to judge whether the minimum battery core monomer voltage of battery pack to be more than preset electric discharge and restore voltage.Third is extensive
Current cut-off current is reverted to minimum cut-off current by multiple module if being more than electric discharge for minimum battery core monomer voltage restores voltage
Imin, to restore to battery power discharge.
In some embodiments of the invention, battery pack charging device further includes the 5th judgment module, the 6th judgment module
With the 4th recovery module (not shown).Wherein, the 5th judgment module is used to judge the minimum battery core monomer voltage of battery pack
Whether it is more than preset electric discharge and restores voltage.If the 6th judgment module is not more than electric discharge for minimum battery core monomer voltage restores electricity
Pressure, then judge whether battery pack is in charged state, and persistently charging duration has reached the second scheduled duration.4th restores mould
Block, if being additionally operable to battery pack is in charged state, and persistently charging duration has reached the second scheduled duration, then by current cut-off current
Revert to minimum cut-off current Imin, to restore to battery power discharge.
The embodiment of the present invention also provides a kind of battery pack charging device, which includes memory and processing
Device；Memory is for storing executable program code；Processor is for reading the executable program code stored in memory
To execute the method for charging battery pack described in Fig. 1-Fig. 4.
The embodiment of the present invention also provides a kind of computer readable storage medium, and computer readable storage medium includes instruction,
When instruction is run on computers so that computer executes the method for charging battery pack described in Fig. 1-Fig. 4.
It should be clear that each embodiment in this specification is described in a progressive manner, each embodiment it
Between just to refer each other for same or analogous part, the highlights of each of the examples are it is different from other embodiment it
Place.For device embodiments, related place may refer to the declaratives of embodiment of the method.Not office of the embodiment of the present invention
It is limited to particular step and structure described above and shown in figure.Those skilled in the art can understand the present invention in fact
It after the spirit for applying example, is variously modified, modification and addition, or the sequence between changing the step.Also, it is risen in order to concise
See, omits the detailed description to known method technology here.
Functional block shown in structures described above block diagram can be implemented as hardware, software, firmware or their group
It closes.When realizing in hardware, it may, for example, be electronic circuit, application-specific integrated circuit (ASIC), firmware appropriate, insert
Part, function card etc..When being realized with software mode, the element of the embodiment of the present invention is used to execute the program of required task
Or code segment.Either code segment can be stored in machine readable media program or the data by being carried in carrier wave are believed
It number is sent in transmission medium or communication links." machine readable media " may include be capable of storage or transmission information any
Medium.The example of machine readable media includes electronic circuit, semiconductor memory devices, ROM, flash memory, erasable ROM
(EROM), floppy disk, CD-ROM, CD, hard disk, fiber medium, radio frequency (RF) link, etc..Code segment can via such as because
The computer network of special net, Intranet etc. is downloaded.
The embodiment of the present invention can be realized in other specific forms, without departing from its spirit and essential characteristics.For example, special
Determine the algorithm described in embodiment to be changed, and system architecture is without departing from the substantially smart of the embodiment of the present invention
God.Therefore, current embodiment is all counted as being exemplary rather than limited, the model of the embodiment of the present invention in all respects
It encloses and is defined by appended claims rather than foregoing description, also, fall into the meaning of claim and complete in the range of equivalent
Portion changes all to be included among the range of the embodiment of the present invention.
Claims (13)
1. a kind of method for charging battery pack, the battery pack is monomer series-connected and/or compose in parallel, feature by least two battery cores
It is, including：
Detect the highest battery core monomer voltage of the battery pack；
If the highest battery core monomer voltage reaches initial limit voltage, turn down described in the cut-off current of the battery pack and height-regulating
The limit voltage of battery pack；
If the highest battery core monomer voltage reaches the charging current limiter voltage after the height-regulating, continue to turn down the battery pack
Cut-off current and the limit voltage that the battery pack is turned up, when the cut-off current after new turn down reaches minimum cut-off current, alternatively,
When limit voltage after new height-regulating reaches charging stopping voltage, stop charging to the battery pack.
2. according to the method described in claim 1, it is characterized in that, the cut-off current for turning down the battery pack, including：
The current cut-off current of the battery pack is multiplied by predetermined factor, the cut-off current after being turned down, the predetermined factor is more than 0
And it is less than 1.
3. according to the method described in claim 1, it is characterized in that, the limit voltage that the battery pack is turned up, including：
The current limit voltage of the battery pack is increased into predetermined value, the limit voltage after being turned up, the predetermined value is more than
0。
4. according to the method described in claim 1, it is characterized in that, it is described stop to the battery pack charge after, it is described
Method further includes：
Judge whether the highest battery core monomer voltage is less than preset charging and restores voltage；
If the highest battery core monomer voltage, which is less than the charging, restores voltage, current cut-off current is reverted into the irreducible minimum
Flow valuve, to restore to charge to the battery pack.
5. according to the method described in claim 1, it is characterized in that, it is described stop to the battery pack charge after, it is described
Method further includes：
Judge whether the highest battery core monomer voltage is less than preset charging and restores voltage；
If the highest battery core monomer voltage restores voltage no less than the charging, judge the battery pack whether in electric discharge
State, and continuous discharge duration has reached the first scheduled duration；
If the battery pack is in discharge condition, and continuous discharge duration has reached first scheduled duration, then will currently limit
Flow valuve reverts to the minimum cut-off current, to restore to charge to the battery pack.
6. according to the method described in claim 1, it is characterized in that, it is described stop to the battery pack charge after, it is described
Method further includes：
Detect the minimum battery core monomer voltage of the battery pack；
Judge whether the minimum battery core monomer voltage is more than preset electric discharge and restores voltage；
If the minimum battery core monomer voltage, which is more than the electric discharge, restores voltage, current cut-off current is reverted into the irreducible minimum
Flow valuve, to restore to the battery power discharge.
7. according to the method described in claim 1, it is characterized in that, the method further includes：
Judge whether the minimum battery core monomer voltage of the battery pack is more than preset electric discharge and restores voltage；
If the minimum battery core monomer voltage, which is not more than the electric discharge, restores voltage, judge the battery pack whether in charging
State, and persistently charging duration has reached the second scheduled duration；
If the battery pack is in charged state, and persistently charging duration has reached second scheduled duration, then will currently limit
Flow valuve reverts to the minimum cut-off current, to restore the battery power discharge.
8. a kind of battery pack charging device, which is characterized in that including：
First detection module, the highest battery core monomer voltage for detecting the battery pack；
Adjustment module turns down the limit of the battery pack if reaching initial limit voltage for the highest battery core monomer voltage
Flow valuve, and the limit voltage of the battery pack is turned up；
The adjustment module, if being additionally operable to the highest battery core monomer voltage reaches the charging current limiter voltage after the height-regulating,
Continue to turn down the cut-off current of the battery pack, and the limit voltage of the battery pack is turned up, the cut-off current after new turn down
When reaching minimum cut-off current, alternatively, when the limit voltage after new height-regulating reaches charging stopping voltage, stop to the electricity
Pond group charging.
9. device according to claim 8, which is characterized in that described device further includes：
First judgment module restores voltage for judging whether the highest battery core monomer voltage is less than preset charging；
First recovery module, if being less than the charging for the highest battery core monomer voltage restores voltage, by current current limliting
Value reverts to the minimum cut-off current, to restore to charge to the battery pack.
10. device according to claim 8, which is characterized in that described device further includes：
Second judgment module restores voltage for judging whether the highest battery core monomer voltage is less than preset charging；
Second judgment module, if for the highest battery core monomer voltage no less than the charging restore voltage, judgement described in
Whether battery pack is in discharge condition, and continuous discharge duration has reached the first scheduled duration；
Second recovery module, if it is in discharge condition for the battery pack, and continuous discharge duration has reached described first in advance
Timing is long, then current cut-off current is reverted to the minimum cut-off current, to restore to charge to the battery pack.
11. device according to claim 8, which is characterized in that described device further includes：
Second detection module, the minimum battery core monomer voltage for detecting the battery pack；
4th judgment module restores electricity for judging whether the minimum battery core monomer voltage of the battery pack is more than preset electric discharge
Pressure；
Third recovery module, if being more than the electric discharge for the minimum battery core monomer voltage restores voltage, by current current limliting
Value reverts to the minimum cut-off current, to restore to the battery power discharge.
12. device according to claim 8, which is characterized in that described device further includes：
5th judgment module restores electricity for judging whether the minimum battery core monomer voltage of the battery pack is more than preset electric discharge
Pressure；
6th judgment module, if not being more than electric discharge recovery voltage for the minimum battery core monomer voltage, described in judgement
Whether battery pack is in charged state, and persistently charging duration has reached the second scheduled duration；
4th recovery module, if it is in charged state for the battery pack, and persistently charging duration has reached described the
Current cut-off current is then reverted to the minimum cut-off current, to restore to the battery power discharge by two scheduled durations.
13. a kind of battery pack charging device, which is characterized in that the battery pack charging device includes memory and processor；
The memory is for storing executable program code；
The processor, which is used to read during the executable program code stored in the memory requires 1 to 7 with perform claim, appoints
Method for charging battery pack described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810355269.XA CN108599295A (en) | 2018-04-19 | 2018-04-19 | Battery pack charging method, device and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810355269.XA CN108599295A (en) | 2018-04-19 | 2018-04-19 | Battery pack charging method, device and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112203376A (en) * | 2020-09-21 | 2021-01-08 | 江门标昇光能科技有限公司 | Intelligent solar lamp control system |
| CN115825781A (en) * | 2022-01-19 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Charging time determination method, BMS, battery and electric energy equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359377A (en) * | 2017-06-30 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Battery pack charging method, device and equipment |
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2018
- 2018-04-19 CN CN201810355269.XA patent/CN108599295A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359377A (en) * | 2017-06-30 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Battery pack charging method, device and equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112203376A (en) * | 2020-09-21 | 2021-01-08 | 江门标昇光能科技有限公司 | Intelligent solar lamp control system |
| CN115825781A (en) * | 2022-01-19 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Charging time determination method, BMS, battery and electric energy equipment |
| CN115825781B (en) * | 2022-01-19 | 2024-02-20 | 宁德时代新能源科技股份有限公司 | Charging time determining method, BMS, battery and electric energy device |
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