CN110061316A - Energy storage cell charging-discharging management method, device and management of charging and discharging device - Google Patents
Energy storage cell charging-discharging management method, device and management of charging and discharging device Download PDFInfo
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- CN110061316A CN110061316A CN201910480128.5A CN201910480128A CN110061316A CN 110061316 A CN110061316 A CN 110061316A CN 201910480128 A CN201910480128 A CN 201910480128A CN 110061316 A CN110061316 A CN 110061316A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present invention provides a kind of energy storage cell charging-discharging management method, device and management of charging and discharging devices, are related to the technical field of lithium ion battery energy storage, this method comprises: monomer battery voltage when monitoring energy storage battery operation；Judge whether monomer battery voltage exceeds preset voltage range；If it is, then reduce operating power, charge and discharge control is carried out with battery to energy storage using the operating power after reduction, it alleviates in the prior art in lithium ion battery charge and discharge process due to the problem of causing efficiency for charge-discharge to reduce by the way of constant current, while can effectively avoid in charge and discharge process and battery occur and occur overcharging and over-discharge.
Description
Technical field
The present invention relates to lithium ion battery technical field of energy storage, more particularly, to a kind of energy storage battery management of charging and discharging side
Method, device and management of charging and discharging device.
Background technique
The technologies such as current low pressure energy storage and high-voltage energy storage, mainly by by network system and wind and light generating system to lithium from
Sub- battery charges, and is discharged by load lithium battery, to realize the storage and use of electric energy.Lithium ion battery
Management of charging and discharging is the important link of energy-storage system management, and the superiority and inferiority of the method for managing charge/discharge design of lithium ion battery is directly determined
The height of energy-storage system safety and service efficiency is determined.
At present in lithium ion battery energy storage system management of charging and discharging, charge and discharge are carried out with constant current, i.e., since charge and discharge
It is carried out to end with constant power, however, the capacity of multiple battery cells is different at charge and discharge end, in fact it could happen that
After battery core is overcharged with over-discharge, charge and discharge are insufficient and charge and discharge end load shedding the problems such as voltage dithering, and charge and discharge is caused to be imitated
Rate reduces.
Summary of the invention
The purpose of the present invention is to provide energy storage cell charging-discharging management method, device and management of charging and discharging devices, alleviate
In the prior art due to causing by the way of constant current efficiency for charge-discharge to reduce in lithium ion battery charge and discharge process
Problem.
A kind of energy storage cell charging-discharging management method provided by the invention, comprising:
Monitor monomer battery voltage when energy storage battery operation；
Judge whether the monomer battery voltage exceeds preset voltage range；
If it is, reducing operating power, charge and discharge are carried out with battery to the energy storage using the operating power after reduction
Control.
Further, the operational process of the energy storage battery includes charging process and discharge process, and, the energy storage is used
Battery includes multiple single batteries；
It is described monitoring energy storage battery operation when monomer battery voltage the step of include: monitoring charging process in, it is multiple
In the maximum charging voltage of the single battery, or monitoring discharge process, the minimum discharge voltage of the single battery；
It is described to judge whether the monomer battery voltage exceeds the method for preset voltage range and include:
In energy storage battery charging process, judge whether the maximum charging voltage is more than or equal to load shedding and starts to charge electricity
Pressure；If it is, determining that the maximum charging voltage exceeds preset voltage range；Alternatively, in energy storage battery discharge procedure,
Judge whether the minimum discharge voltage is less than or equal to load shedding firing voltage；If it is, determining the minimum electric discharge electricity
Pressure exceeds preset voltage range.
Further, the step of reduction operating power, comprising:
Determine the coefficient for reducing operating power and each load shedding time；
According to the coefficient for reducing operating power and each load shedding time, operating power is gradually reduced.
Further, the step of determining coefficient for reducing operating power, comprising:
When the energy storage is charged with battery, obtains load shedding and stop charging voltage, load shedding charging voltage step-length；
The difference that the maximum charging voltage and the load shedding stop charging voltage being walked divided by the load shedding charging voltage
Long value is determined as reducing the coefficient of charge power.
Further, the step of determining coefficient for reducing operating power, comprising:
When the energy storage battery discharge, load shedding discharge voltage step-length is obtained；
The difference of the minimum discharge voltage and the load shedding firing voltage is walked divided by the load shedding discharge voltage
Long value is determined as reducing the coefficient of operating power.
Further, according to the coefficient for reducing operating power and each load shedding time, work function is gradually reduced
Rate, comprising:
Obtain load shedding charge-discharge electric power step-length, charge and discharge rated power；
It is proceeded as follows to operating power is reduced each time:
Charge and discharge rated power and load shedding charge-discharge electric power step-length are dropped multiplied by the difference of current coefficient as current coefficient
Low operating power；
According to the operating power currently reduced, as each load shedding time carries out dynamic charge and discharge.
Further, it is described judge the step of whether monomer battery voltage exceeds preset voltage range after, institute
State method further include:
When the monomer battery voltage is without departing from preset voltage range, using charge and discharge rated power to the storage
Charge and discharge can be carried out with battery.
A kind of energy storage battery charge-discharge managing device provided by the invention, comprising:
Module is obtained, for monitoring monomer battery voltage when energy storage battery operation；
Judgment module, for judging whether the monomer battery voltage exceeds preset voltage range；
Power reduces processing module, and the judging result for the judgment module is when being, then to reduce operating power, uses
Operating power after reduction carries out charge and discharge control with battery to the energy storage.
A kind of management of charging and discharging device provided by the invention, including memory, processor, being stored in the memory can be
The computer program run on the processor, the processor realize that above-described embodiment is any when executing the computer program
The step of method described in item.
A kind of energy-storage system provided by the invention, comprising: the management of charging and discharging device according to above-described embodiment, energy storage are used
Battery system, Energy Management System, energy accumulation current converter, external command module；The energy storage battery system and the energy storage become
It flows device to be connected, the Energy Management System is connected with the energy storage with battery system with the energy accumulation current converter respectively, described outer
Portion's instruction module is connected with the Energy Management System；
Wherein, the management of charging and discharging device be integrated in the energy storage battery system or the Energy Management System or
Energy accumulation current converter described in person；
The energy storage battery system includes lithium ion battery and battery management system, and the lithium ion battery is for storing
Electric energy, the battery management system is for managing and protecting the lithium ion battery；
The energy accumulation current converter is used for and is connected with power grid and loading, using direct current and the two-way inversion that exchanges, in institute
Power grid and the load are stated with the energy storage with carrying out electric current flowing between battery system；
The Energy Management System is used to manage energy storage battery system and the energy accumulation current converter carries out charge and discharge；
The external command module is for carrying out instruction scheduling to the Energy Management System.
A kind of computer-readable medium provided by the invention is stored with computer program on the computer-readable medium,
The computer program executes device described in any one of above-described embodiment when being run by processor.
Energy storage cell charging-discharging management method, device and management of charging and discharging device provided by the invention, can pass through monitoring
Monomer battery voltage when energy storage battery operation, then judges whether the monomer battery voltage exceeds preset voltage model
It encloses, if it exceeds preset voltage range, it can be by way of reducing operating power, using the operating power after reduction to storage
Charge and discharge control can be carried out with battery, alleviated in the prior art in lithium ion battery charge and discharge process due to using constant current
Mode and the problem of cause efficiency for charge-discharge to reduce.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart of energy storage cell charging-discharging management method provided in an embodiment of the present invention；
Fig. 2 is the flow chart of the management method in charging process provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the management method in discharge process provided in an embodiment of the present invention；
Fig. 4 is the structure chart of energy storage battery charge-discharge managing device provided in an embodiment of the present invention；
Fig. 5 is the structure chart of energy-storage system provided in an embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
At present in lithium ion battery energy storage system management of charging and discharging, charge and discharge are carried out with constant current, i.e., since charge and discharge
It is carried out to end with constant power, however, the capacity of multiple battery cells is different at charge and discharge end, in fact it could happen that
After battery core is overcharged with over-discharge, charge and discharge are insufficient and charge and discharge end load shedding the problems such as voltage dithering, and charge and discharge is caused to be imitated
Rate reduces.
Based on this, energy storage cell charging-discharging management method, device and management of charging and discharging device provided by the invention, Ke Yitong
Monomer battery voltage when monitoring energy storage battery operation is crossed, then judges whether the monomer battery voltage exceeds preset electricity
Range is pressed, if it exceeds predetermined voltage range, it can be by way of reducing operating power, using the operating power pair after reduction
Energy storage carries out charge and discharge with battery, alleviates in the prior art in lithium ion battery charge and discharge process due to the side using constant current
Formula and the problem of cause efficiency for charge-discharge to reduce.
It is described in detail below in conjunction with attached drawing:
As shown in connection with fig. 1, a kind of energy storage cell charging-discharging management method provided by the invention, comprising:
S110: monomer battery voltage when monitoring energy storage battery operation；
In energy storage battery charging and discharging, each of energy storage battery monomer can be monitored, to obtain energy storage electricity consumption
The voltage value of each of pond monomer.
S120: judge whether the monomer battery voltage exceeds preset voltage range；
Wherein, the operational process of the energy storage battery includes charging process and discharge process, and preset voltage range is
If carrying out the critical value for causing efficiency for charge-discharge to reduce in charge and discharge process with the power invariability.
Further, above-mentioned energy storage battery includes multiple single batteries；When energy storage battery includes multiple monomer electricity
The monitoring process of Chi Shi, above-mentioned steps S110 include the maximum charging voltage of multiple single batteries in monitoring charging process,
Or in monitoring discharge process, the minimum discharge voltage of the single battery, also, the deterministic process of above-mentioned steps S120 can be with
It is included in energy storage battery charging process, judges whether the maximum charging voltage is more than or equal to load shedding and starts to charge voltage；Such as
Fruit is, it is determined that the maximum charging voltage exceeds preset voltage range；Alternatively, in energy storage battery discharge procedure, judgement
Whether the minimum discharge voltage is less than or equal to load shedding firing voltage；If it is, determining that the minimum discharge voltage is super
Preset voltage range out.
Specifically, during the charging process, when soon being completed to energy storage with battery charging, if also corresponding with the voltage
Power when being charged, charge efficiency can be caused to reduce, that is, the insufficient or charging process that overcharges or charge occur
In voltage dithering etc. the problems such as, which can start to charge voltage for load shedding.Wherein, whether judging the ceiling voltage
When more than default charging/discharging voltage threshold value, during the charging process, judge whether the maximum charging voltage is more than or equal to reduction and opens
Beginning charging voltage executes step S130 if it is, determining that the maximum charging voltage exceeds preset voltage range, i.e., into
Row reduces current charge power value, is charged to energy storage with battery using the operating power after reduction, if not, i.e. described
When maximum charging voltage is without departing from preset voltage range, then charged to energy storage with battery using charging rated power.
Likewise, in electric discharge, when energy storage is soon discharged with battery discharge, i.e. energy storage is out of power fastly with battery, if also
To be discharged with the corresponding power of the voltage, will lead to discharging efficiency reduction, that is, occur over-discharge or electric discharge it is insufficient or
The problems such as voltage dithering etc. in person's discharge process, which can be load shedding firing voltage.Wherein, described most in judgement
Whether high voltage is more than default charging/discharging voltage threshold value, during discharge, judges whether the minimum discharge voltage is less than
In reducing firing voltage, if it is, determining that the minimum discharge voltage exceeds preset voltage range, step is executed
S130 is carried out reducing present discharge performance number, be discharged with battery using the operating power after reduction energy storage, if
It is no, i.e., when the minimum discharge voltage is without departing from preset voltage range, then using electric discharge rated power to energy storage electricity consumption
It discharges in pond.
S130: if so, reducing operating power, charge and discharge are carried out with battery to energy storage using the performance number after reduction.
Wherein it is possible to by determining the coefficient for reducing operating power and each load shedding time, then according to the reduction work
The coefficient of the rate of doing work and each load shedding time, gradually reduce operating power.
As an example, when the energy storage is charged with battery, as shown in connection with fig. 2, whether judge maximum charging voltage
Voltage V1 is started to charge more than or equal to load shedding, if it is not, then charged to energy storage with battery using charging rated power, if
It is to obtain load shedding to stop charging voltage V2, load shedding charging voltage step-length Vxc；By the maximum charging voltage Vc and the load shedding
Stop the difference of charging voltage V2 divided by the value of the load shedding charging voltage step-length Vxc, be determined as reducing the coefficient n of charge power,
That is n=(V2-Vc)/Vxc, wherein n is natural number.
According to the coefficient for reducing charge power and each load shedding time, current charge power value is gradually reduced
Implementation is to obtain charge specified power P c, load shedding charge power step-length Pxc, reduces charge power each time according to as follows
Carry out: when current coefficient is 1, the value (Pc-Pxc*1) for the operating power that current coefficient reduces is pressed in each load shedding time t
It charges according to (Pc-Pxc*1)；When current coefficient is 2, the value (Pc-Pxc*2) of the operating power currently reduced is dropping every time
It carries in time t, charges according to (Pc-Pxc*2)；And so on, when current coefficient is n times, the operating power that currently reduces
Value (Pc-Pxc*n) charge in each load shedding time t according to (Pc-Pxc*n).In the process for reducing operating power
In, judge whether maximum charging voltage is greater than load shedding and stops charging voltage V2, if it is, terminating charging, if it is not, then continuing
Proceed as described above running.Meanwhile if after the overall coefficient of the reduced operating power calculated,
Maximum charging voltage is still not more than load shedding and stops charging voltage V2, then is filled with the operating power reduced for the last time
Electricity.
Wherein, when being charged according to the operating power reduced each time, while starting timer T, judge timer T
When < Tx, then it can continue to charge according to the reduced operating power of the current time of current coefficient, if it is not, then can be with
Stop timer T, timer time meter is done 0, re-starts timing next time.
Wherein, the specified power P c that charges is 100KW, and load shedding charge power step-length Pxc is 10KW, and load shedding starts to charge voltage
V1 is 3.50V, and it is 3.65V, load shedding charging voltage step-length are as follows: 10mV, timer time Tx are that load shedding, which stops charging voltage V2,
10min, i.e., each load shedding time.
As another example, when the energy storage battery discharge, as shown in connection with fig. 3, judge minimum discharge voltage Vf
Whether load shedding firing voltage V3 is less than or equal to, if it is not, then discharged with battery using electric discharge rated power energy storage,
If so, obtaining load shedding discharge voltage step-length Vxf；By the minimum discharge voltage Vf's and load shedding firing voltage V3
Difference divided by the load shedding discharge voltage step-length Vxf value, be determined as reduce discharge power coefficient, i.e. m=(Vf-V3)/
Vxf。
With charging likewise, the implementation for gradually reducing operating power is, electric discharge rated power Pf, load shedding electric discharge are obtained
Power step size Pxf is proceeded as follows to operating power is reduced each time: when current coefficient is 1, the operating power that currently reduces
Value (Pf-Pxf*1) discharge in each load shedding time t according to (Pf-Pxf*1)；When current coefficient is 2 times, currently
The value of reduced operating power is that (Pf-Pxf*2) discharges, successively in each load shedding time t according to (Pf-Pxf*2)
Analogize, when current coefficient is m, the value of the operating power currently reduced is that (Pf-Pxf*m) is pressed in each load shedding time t
It discharges according to (Pf-Pxf*m), during reducing operating power, judges whether minimum discharge voltage Vf stops less than load shedding
Only discharge voltage V4, if it is, terminate charging, if it is not, then continue to reduce operating power, meanwhile, if ought be decreased
Overall coefficient after, minimum discharge voltage is still not less than load shedding and stops discharge voltage V4, then to have reduced for the last time
Power discharges.
Wherein, when being discharged according to the operating power reduced each time, while starting timer T, judge timer T
When < Tx, then the operating power that can continue to reduce according to the current time of current coefficient discharges, if it is not, then can stop
Timer time meter is done 0, re-starts timing next time by only timer T.
Wherein, electric discharge rated power Pf is 100KW, and load shedding discharge power step-length Pxf is 10KW, load shedding discharge ionization voltage
V3 is 3.15V, and it is 3.00V, load shedding discharge voltage step-length are as follows: 10mV, timer time Tx are that load shedding electric discharge, which stops voltage V4,
10min。
As shown in connection with fig. 4, a kind of energy storage battery charge-discharge managing device provided by the invention, comprising:
Module 410 is obtained, for monitoring monomer battery voltage when energy storage battery operation；
Judgment module 420, for judging whether the monomer battery voltage exceeds preset voltage range；
Power reduces processing module 430, and the judging result for the judgment module is when being, then to reduce operating power,
Charge and discharge control is carried out with battery to the energy storage using the operating power after reduction.
The technical effect and preceding method embodiment phase of device provided by the embodiment of the present invention, realization principle and generation
Together, to briefly describe, Installation practice part does not refer to place, can refer to corresponding contents in preceding method embodiment.
A kind of management of charging and discharging device provided by the invention, including memory, processor, being stored in the memory can be
The computer program run on the processor, the processor realize that above-described embodiment is any when executing the computer program
The step of method described in item.
As shown in connection with fig. 5, a kind of energy-storage system provided by the invention, comprising: the charge and discharge according to above-described embodiment
Manager, energy storage battery system 1, Energy Management System 6, energy accumulation current converter 4, external command module 5；The energy storage battery
System 1 is connected with the energy accumulation current converter 4, the Energy Management System 6 respectively with the energy storage battery system 1 and the storage
Energy current transformer 4 is connected, and can be communicated by the way of wireless or wired, the external command module 5 and the energy
Management system 6 is connected, and can be communicated by the way of wireless or wired；
Wherein, the management of charging and discharging device be integrated in the energy storage battery system 1 or the Energy Management System 6,
Or the energy accumulation current converter 4；
The energy storage includes lithium ion battery 2 and battery management system 3 with battery system 1, and the lithium ion battery 2 is used for
Electric energy is stored, the battery management system 3 is for managing and protecting the lithium ion battery；
The energy accumulation current converter 4 with power grid 7 and loading for 8 being connected, using direct current and the two-way inversion that exchanges, in institute
Power grid 7 and load 8 are stated with the energy storage with carrying out electric current flowing between battery system 1；Wherein, power grid can be energy-storage system
Energy source is provided；Load can be used in consuming the electric energy of energy-storage system and power grid.
The Energy Management System 6 carries out charge and discharge with battery system 1 and the energy accumulation current converter 4 for managing the energy storage
Electricity；
The external command module 5 is for carrying out instruction scheduling to the Energy Management System 6.
Optionally, energy storage battery system 1 is 300KWH lithium battery system, and lithium ion battery 2 is 210 strings 2 and battery pack
Lithium battery, battery management system 3 are lithium battery management system, and energy accumulation current converter 4 is 100KWPCS (AC/DC).
A kind of computer-readable medium provided by the invention is stored with computer program on the computer-readable medium,
The computer program executes device described in any one of above-described embodiment when being run by processor.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of energy storage cell charging-discharging management method characterized by comprising
Monitor monomer battery voltage when energy storage battery operation；
Judge whether the monomer battery voltage exceeds preset voltage range；
If it is, reducing operating power, charge and discharge control is carried out with battery to the energy storage using the operating power after reduction.
2. energy storage cell charging-discharging management method according to claim 1, which is characterized in that the energy storage battery
Operational process includes charging process and discharge process, and, the energy storage battery includes multiple single batteries；
The step of monomer battery voltage when the monitoring energy storage battery operation, includes: in monitoring charging process, multiple described
The maximum charging voltage of single battery, alternatively, in monitoring discharge process, the minimum discharge voltage of the single battery；
It is described to judge whether the monomer battery voltage exceeds the method for preset voltage range and include:
In energy storage battery charging process, judge whether the maximum charging voltage is more than or equal to load shedding and starts to charge voltage；Such as
Fruit is, it is determined that the maximum charging voltage exceeds preset voltage range；Alternatively, in energy storage battery discharge procedure, judgement
Whether the minimum discharge voltage is less than or equal to load shedding firing voltage；If it is, determining that the minimum discharge voltage is super
Preset voltage range out.
3. energy storage cell charging-discharging management method according to claim 2, which is characterized in that the reduction operating power
The step of, comprising:
Determine the coefficient for reducing operating power and each load shedding time；
According to the coefficient for reducing operating power and each load shedding time, operating power is gradually reduced.
4. energy storage cell charging-discharging management method according to claim 3, which is characterized in that determining reduces operating power
Coefficient the step of, comprising:
When the energy storage is charged with battery, obtains load shedding and stop charging voltage, load shedding charging voltage step-length；
The maximum charging voltage and the load shedding are stopped into the difference of charging voltage divided by the load shedding charging voltage step-length
Value is determined as reducing the coefficient of charge power.
5. energy storage cell charging-discharging management method according to claim 3, which is characterized in that determining reduces operating power
Coefficient the step of, comprising:
When the energy storage battery discharge, load shedding discharge voltage step-length is obtained；
By the difference of the minimum discharge voltage and the load shedding firing voltage divided by the load shedding discharge voltage step-length
Value is determined as reducing the coefficient of operating power.
6. energy storage cell charging-discharging management method according to claim 4 or 5, which is characterized in that according to the reduction
The coefficient of operating power and each load shedding time, gradually reduce operating power, comprising:
Obtain load shedding charge-discharge electric power step-length, charge and discharge rated power；
Operating power is reduced each time to proceed as follows:
Using charge and discharge rated power and load shedding charge-discharge electric power step-length multiplied by the difference of current coefficient as the work currently reduced
Power；
According to the operating power currently reduced, as each load shedding time carries out dynamic charge and discharge.
7. energy storage cell charging-discharging management method according to claim 1, which is characterized in that the judgement monomer
After the step of whether cell voltage exceeds preset voltage range, the method also includes:
When the monomer battery voltage is without departing from preset voltage range, the energy storage is used using charge and discharge rated power
Battery carries out charge and discharge.
8. a kind of energy storage battery charge-discharge managing device characterized by comprising
Module is obtained, for monitoring monomer battery voltage when energy storage battery operation；
Judgment module, for judging whether the monomer battery voltage exceeds preset voltage range；
Power reduces processing module, and the judging result for the judgment module is when being, then operating power to be reduced, using reduction
Operating power afterwards carries out charge and discharge control with battery to the energy storage.
9. a kind of management of charging and discharging device, including memory, processor, it is stored with and can transports on the processor in the memory
Capable computer program, which is characterized in that the processor realizes the claims 1 to 7 when executing the computer program
The step of described in any item methods.
10. a kind of energy-storage system characterized by comprising management of charging and discharging device according to claim 9, energy storage electricity consumption
Cell system, Energy Management System, energy accumulation current converter, external command module；The energy storage battery system and the energy storage unsteady flow
Device is connected, and the Energy Management System is connected with the energy storage with battery system with the energy accumulation current converter respectively, the outside
Instruction module is connected with the Energy Management System；
Wherein, the management of charging and discharging device is integrated in the energy storage battery system or the Energy Management System or institute
State energy accumulation current converter；
The energy storage battery system includes lithium ion battery and battery management system, and the lithium ion battery is for storing electricity
Can, the battery management system is for managing and protecting the lithium ion battery；
The energy accumulation current converter with power grid and loading for being connected, using direct current and the two-way inversion that exchanges, in the power grid
And the load is with the energy storage with carrying out electric current flowing between battery system；
The Energy Management System is used to manage energy storage battery system and the energy accumulation current converter carries out charge and discharge；
The external command module is for carrying out instruction scheduling to the Energy Management System.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601283A (en) * | 2019-08-14 | 2019-12-20 | 浙江南都电源动力股份有限公司 | Charging method and system |
| CN114389334A (en) * | 2021-12-20 | 2022-04-22 | 深圳市理德铭科技股份有限公司 | Notebook computer charger capable of prolonging service life of battery |
| CN115833311A (en) * | 2022-11-30 | 2023-03-21 | 厦门海辰储能科技股份有限公司 | Energy storage system control method and related device |
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