CN109980732A - Charging and discharging lithium battery control method and power supply system - Google Patents
Charging and discharging lithium battery control method and power supply system Download PDFInfo
- Publication number
- CN109980732A CN109980732A CN201910257306.8A CN201910257306A CN109980732A CN 109980732 A CN109980732 A CN 109980732A CN 201910257306 A CN201910257306 A CN 201910257306A CN 109980732 A CN109980732 A CN 109980732A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- charging
- voltage
- threshold value
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention is suitable for power supply technical field, provides a kind of charging and discharging lithium battery control method and power supply system, wherein above-mentioned charging and discharging lithium battery control method includes: the current voltage for obtaining lithium battery；When current voltage is less than preset first charging voltage threshold value, charged by preset first continuous current to lithium battery；When current voltage is greater than or equal to preset second charging voltage threshold value, charged by preset second continuous current to the lithium battery；When current voltage is greater than or equal to preset third charging voltage threshold value, stop charging to lithium battery.Charging and discharging lithium battery control method and power supply system provided in an embodiment of the present invention; by controlling charge control of the size of charging current to lithium battery progress stage by stage; it avoids directlying adopt larger current and charge to the lithium battery of over-discharge, realize the charge protection to lithium battery.
Description
Technical field
The invention belongs to power supply technical field more particularly to a kind of charging and discharging lithium battery control method and power supply systems
System.
Background technique
Common UPS (Uninterruptible Power System uninterruptible power supply, abbreviation UPS) is mostly with battery
It is load supplying when battery is accessed and loaded as energy storage component.Sometimes battery will appear electric energy mistake in power supply process
It puts.For the battery of electric energy over-discharge, especially lithium battery, if directly carrying out quick charge using high current, it is very easy to
Lithium battery is caused to damage, to influence the electric energy storage amount of lithium battery, causes the shortening of power supply system preparation time.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of charging and discharging lithium battery control method and power supply system, to solve
The prior art is existing during charging to lithium battery to be easy the problem of damage is caused to lithium battery.
According in a first aspect, the embodiment of the invention provides a kind of charging and discharging lithium battery control methods, comprising: monitor lithium electricity
Whether pond accesses external power supply, when listening to lithium battery access external power supply, monitors the current voltage of the lithium battery；Institute
When stating current voltage less than the first charging voltage threshold value, charged by preset first continuous current to the lithium battery；Institute
When stating current voltage more than or equal to the second charging voltage threshold value, the lithium battery is filled by preset second continuous current
Electricity；Wherein, the second charging voltage threshold value is greater than the first charging voltage threshold value, and second continuous current is greater than described
First continuous current；When the current voltage is greater than or equal to preset third charging voltage threshold value, stop to the lithium electricity
Pond charging；The third charging voltage threshold value is greater than the second charging voltage threshold value.
Charging and discharging lithium battery control method provided in an embodiment of the present invention is charging to lithium battery using external power supply
When, the current voltage of lithium battery is acquired first, judges lithium battery whether in the last time electric discharge according to the current voltage of lithium battery
In over-discharge has occurred.For being implicitly present in the lithium battery of overdischarge conditions, by controlling the size of charging current, to lithium
Battery carries out charge control stage by stage, avoids directlying adopt larger current and charge to the lithium battery of over-discharge, realizes to lithium
The charge protection of battery, solve the prior art during charging to lithium battery it is existing be easy lithium battery is caused
The problem of damage.In addition, being conducive to the electric energy storage amount for keeping lithium battery by carrying out charge control stage by stage to lithium battery
And prolong its service life, the maintenance frequency of lithium battery is reduced, and the preparation time of power supply system is made to be protected, is conducive to
Improve the power supply reliability of lithium battery.
According in a first aspect, in first aspect first embodiment, the charge control method of lithium battery further include: when
The current voltage is greater than or equal to the first charging voltage threshold value, and when the current voltage is less than the second charging voltage threshold value,
It is charged by preset second continuous current to the lithium battery.
Charging and discharging lithium battery control method provided in an embodiment of the present invention, for not occurring the lithium battery of over-discharge, i.e.,
Current voltage is greater than or equal to the lithium battery of preset first charging voltage threshold value, directlys adopt biggish second continuous current pair
Lithium battery charges, and is conducive to the charging process for the lithium battery that regular picture is rapidly completed.
According in a first aspect, in first aspect second embodiment, the charge control method of lithium battery further include: when
When the current voltage is less than preset second charging voltage threshold value, repeat described by preset first continuous current pair
The step of lithium battery charges, until the current voltage is greater than or equal to preset second charging voltage threshold value.
Charging and discharging lithium battery control method provided in an embodiment of the present invention, for the lithium battery of over-discharge, i.e., current electricity
Pressure is less than the lithium battery of preset first charging voltage threshold value, is persistently charged using lesser first continuous current to it, thus
The lithium battery of effective protection over-discharge, avoids large current charge from causing to damage to it.
According in a first aspect, in first aspect third embodiment, the charge control method of lithium battery further include: when
When the current voltage is less than preset third charging voltage threshold value, repeat described by preset second continuous current pair
The step of lithium battery charges, until the current voltage is greater than or equal to preset third charging voltage threshold value.
Charging and discharging lithium battery control method provided in an embodiment of the present invention is charged electric by current voltage and preset third
The comparison of threshold value is pressed, whether real-time judge lithium battery, which has met, is filled full condition, the lithium battery of full state is filled for being in, in order to
It is in its long-time under high-voltage charging mode, terminates to charge in time；The lithium battery that full state is filled for being not yet in, then hold
It is continuous to be charged by biggish second continuous current to it, to guarantee the charge volume of lithium battery.
According to any embodiment of first aspect or first aspect first into third, in the 4th embodiment party of first aspect
In formula, after described the step of stopping to lithium battery charging, the charging and discharging lithium battery control method further include: in institute
When stating current voltage less than or equal to the 4th charging voltage threshold value, charged by the second continuous current to the lithium battery, until
The current voltage of the lithium battery reaches third charging voltage threshold value；Wherein, the 4th charging voltage threshold value is less than described the
Three charging voltage threshold values.
Charging and discharging lithium battery control method provided in an embodiment of the present invention fully considers lithium after completing lithium battery charging
The self discharge of battery, the electric energy loss for caused by long-time self discharge carry out electric energy supplement, to avoid lithium battery long in time
Phase, which leaves unused, causes electric energy to lose, and is conducive to provide the power supply reliability of lithium battery.
According to the 4th embodiment of first aspect, in the 5th embodiment of first aspect, the charging and discharging lithium battery control
Method processed further include: monitor whether the lithium battery accesses load, when listening to the lithium battery access load, described in monitoring
The discharge voltage information of lithium battery；When the discharge voltage information is less than preset discharge voltage threshold value, the lithium electricity is obtained
The voltage changing rate in pond；When the voltage changing rate of the lithium battery be greater than or equal to preset rate-valve value when, stop to
The load discharge.
Charging and discharging lithium battery control method provided in an embodiment of the present invention, using lithium battery at electric discharge initial stage and electric discharge latter stage
Voltage declines faster characteristic, identifies whether lithium battery enters electric discharge latter stage by voltage and voltage changing rate, and cut in time
Except the lithium battery for entering electric discharge latter stage, its over-discharge is avoided, to realize the discharge prevention to lithium battery.
It is described to obtain the lithium battery in first aspect sixth embodiment according to the 5th embodiment of first aspect
Voltage changing rate, comprising: obtain the two discharge voltage information and described two discharge voltage information of the lithium battery
Corresponding temporal information；The voltage of the lithium battery is calculated according to described two discharge voltage information and the temporal information
Rate of change.
Charging and discharging lithium battery control method provided in an embodiment of the present invention passes through two electric discharges electricity of continuous acquisition lithium battery
Information and corresponding temporal information are pressed, the voltage changing rate of lithium battery is calculated.Since discharge voltage information and temporal information are equal
For conventional parameter, have the advantages that acquire that speed is fast and precision is controllable, it being capable of quickly and easily data acquisition process.
Passed through in the 7th embodiment of first aspect according to first aspect sixth embodiment
Calculate the voltage changing rate of the lithium battery；Wherein, K indicates the voltage changing rate of the lithium battery；Δ V=
|V1-V2|, V1And V2Respectively indicate described two discharge voltage information；Δ t=t2-t1, t1And t2Respectively described two electric discharge electricity
Press the corresponding temporal information of information.
Charging and discharging lithium battery control method provided in an embodiment of the present invention, two for passing through formula and utilization lithium battery are continuous
Discharge voltage information and corresponding temporal information, can quickly and easily complete the calculating of lithium battery voltage rate of change.
According to second aspect, the embodiment of the invention provides a kind of charging and discharging lithium battery control devices, comprising: voltage acquisition
Unit, when listening to lithium battery access external power supply, monitors the lithium electricity for monitoring whether lithium battery accesses external power supply
The current voltage in pond；Charge-discharge control unit, when the current voltage is less than the first charging voltage threshold value, for by default
The first continuous current charge to the lithium battery；When the current voltage is greater than or equal to the second charging voltage threshold value, institute
Charge-discharge control unit is stated to be also used to charge to the lithium battery by preset second continuous current；Wherein, described second fills
Piezoelectric voltage threshold value is greater than the first charging voltage threshold value, and second continuous current is greater than first continuous current；Institute
When stating current voltage more than or equal to preset third charging voltage threshold value, the charge-discharge control unit is also used to stop to institute
State lithium battery charging；The third charging voltage threshold value is greater than the second charging voltage threshold value.
According to the third aspect, the embodiment of the invention provides a kind of power supply systems, comprising: lithium battery, memory and processing
Device communicates with each other connection, is stored with computer in the memory between the lithium battery, the memory and the processor
Instruction, the processor is by executing the computer instruction, thereby executing any embodiment party of such as first aspect or first aspect
Charging and discharging lithium battery control method described in formula.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the flow chart of a specific example of charging and discharging lithium battery control method provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another specific example of charging and discharging lithium battery control method provided in an embodiment of the present invention；
Fig. 3 is lithium battery discharge characteristic curve；
Fig. 4 is the structural representation of a specific example of charging and discharging lithium battery control device provided in an embodiment of the present invention
Figure；
Fig. 5 is the structural schematic diagram of a specific example of power supply system provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
The embodiment of the invention provides a kind of charging and discharging lithium battery control methods, as shown in Figure 1, the charging and discharging lithium battery control
Method processed may include:
Step S101: monitoring whether lithium battery accesses external power supply, when listening to lithium battery access external power supply, monitoring
The current voltage of lithium battery.When lithium battery accesses external power supply, external power supply starts to charge to lithium battery.Specifically,
External power supply can be the three-phase alternating current of alternating current, be charged by DC-AC conversion device to lithium battery.In external power supply to lithium
Before battery is charged, the current voltage of lithium battery can be detected first, and then is known in the next steps according to current voltage
Whether other lithium battery in the last discharge process there is the case where over-discharge.
Step S102: judge whether current voltage is less than preset first charging voltage threshold value.When current voltage is less than in advance
If the first charging voltage threshold value when, execute step S103；When current voltage is greater than or equal to preset first charging voltage threshold
When value, step S104 is executed.
Step S103: it is charged by preset first continuous current to lithium battery.For there are the lithiums of overdischarge conditions
Battery, i.e. current voltage are less than the lithium battery of preset first charging voltage threshold value, by controlling the size of charging current, to lithium
Battery carries out low current charge control, avoids directlying adopt larger current and charge to the lithium battery of over-discharge, realizes to lithium electricity
The charge protection in pond.
In addition, during carrying out the constant-current constant-voltage charging of low current to lithium battery according to the first continuous current, Ke Yizhou
The information of voltage of the detection lithium battery of phase property, and then judged whether to update lithium in the next steps according to the information of voltage of lithium battery
The charging current of battery.
Step S104: judge whether current voltage is greater than or equal to preset second charging voltage threshold value.Work as current voltage
When more than or equal to preset second charging voltage threshold value, step S105 is executed；When current voltage is less than preset second charging
When voltage threshold, return step S103.
Step S105: it is charged by preset second continuous current to lithium battery.For the lithium battery of over-discharge, that is, work as
Preceding voltage is less than the lithium battery of preset first charging voltage threshold value, is carrying out one section to it using lesser first continuous current
After the charging of time, the voltage of lithium battery can be risen, can when its voltage reaches preset second charging voltage threshold value
The over-discharge electric energy in lithium battery to think over-discharge has been supplemented.At this point, if low current charge is changed to larger
Electric current charging is not in cell damage caused by large current charge after over-discharge.It, can be in order to improve the charge efficiency of lithium battery
Lesser first continuous current is replaced by biggish second continuous current, continues to carry out constant-current constant-voltage charging to lithium battery.In addition,
For not occurring the lithium battery of over-discharge, i.e. lithium electricity of the current voltage more than or equal to preset first charging voltage threshold value
Pond can be directly used biggish second continuous current and carry out constant-current constant-voltage charging to it.
In addition, during carrying out the constant-current constant-voltage charging of high current to lithium battery according to the second continuous current, Ke Yizhou
The information of voltage of the detection lithium battery of phase property, and then completion pair is judged whether according to the information of voltage of lithium battery in the next steps
The charging of lithium battery.
Step S106: judge whether current voltage is greater than or equal to preset third charging voltage threshold value.Work as current voltage
When more than or equal to preset third charging voltage threshold value, step S107 is executed；When current voltage charges less than preset third
When voltage threshold, return step S105.
Step S107: stop charging to lithium battery.Through current voltage compared with preset third charging voltage threshold value,
Whether real-time judge lithium battery, which has met, is filled full condition, fills the lithium battery of full state, for being in order not to make its long-time
Under high-voltage charging mode, terminate to charge in time；The lithium battery of full state is filled for being not yet in, then is continued through biggish
Second continuous current charges to it, to guarantee the charge volume of lithium battery.
Optionally, in order to realize to the electric energy of lithium battery self discharge supplement, as shown in Fig. 2, can also step S107 it
After add following steps:
Step S108: judge whether current voltage is less than or equal to the 4th charging voltage threshold value.Be less than when current voltage or
When equal to the 4th charging voltage threshold value, step S109 is executed；When current voltage is greater than preset 4th charging voltage threshold value, hold
Continuous monitoring current voltage.In the embodiment of the present application, the current voltage of lithium battery can refer to lithium battery access external power supply and benefit
It is carried out in charging process with external power supply, the voltage difference between positive and negative anodes；The current voltage of lithium battery can also refer to lithium electricity
Voltage difference of the pond both without accessing external power supply, also when no access load, between positive and negative anodes.In step S108, lithium
The current voltage of battery refers under lithium battery self discharge state, the voltage difference between positive and negative anodes.
Step S109: it is charged by preset second continuous current to lithium battery, until the voltage of lithium battery reaches default
Third charging voltage threshold value when, stop to lithium battery charge.When the current voltage of lithium battery is less than or equal to the preset 4th
When charging voltage threshold value, it is believed that the self discharge electric energy loss of lithium battery is larger, in order to keep the electric energy storage in lithium battery,
In case being in the future load supplying, need to carry out boost charge to it.When carrying out boost charge to lithium battery, since lithium battery is worked as
Preceding self discharge electric energy loss is little, and the degree of not up to over-discharge, therefore, directly can only use amplitude biggish second
Continuous current charges to it, so that the electric energy supplement of lithium battery be rapidly completed.
In the case where lithium battery is in idle state, i.e., lithium battery does not access load and when to load discharge, can be periodic
The information of voltage of lithium battery is detected, and then judges whether to need to lithium battery according to the information of voltage of lithium battery in the next steps
Self discharge electric energy loss supplemented.
Optionally, as shown in Fig. 2, following steps can also be added after step S107 or step S109, to realize
To the discharge prevention of lithium battery, lithium battery is avoided the case where over-discharge occur:
Step S110: monitoring whether lithium battery accesses load, when listening to lithium battery access load, monitors lithium battery
Discharge voltage information.In the case where lithium battery is in load discharge state, i.e. lithium battery access load and when to load discharge, Ke Yizhou
The discharge voltage information of the detection lithium battery of phase property, and then judge that lithium battery is according to its discharge voltage information in the next steps
The case where over-discharge will occur in no appearance.In the embodiment of the present application, discharge voltage information refers to that lithium battery accesses
It loads and voltage difference when to load discharge between its positive and negative anodes.
Step S111: judge whether discharge voltage information is less than preset discharge voltage threshold value.When discharge voltage information is small
When preset discharge voltage threshold value, step S112 is executed；When discharge voltage information is greater than or equal to preset discharge voltage threshold
When value, return step S110.Power supply system (such as ups system) or lithium battery, can all set battery discharge blanking voltage, thus
Protection is provided for battery discharge.Discharge cut-off voltage is too low, be easy to cause battery over-discharge；Discharge cut-off voltage is excessively high, then
The preparation time of power supply system or lithium battery can be made to shorten.In step S111, the effect and electric discharge of discharge voltage threshold value end
Voltage is similar, but in charging and discharging lithium battery control method provided in an embodiment of the present invention, not merely with discharge voltage threshold value work
For the sole criterion of lithium battery control of discharge.
Step S112: the voltage changing rate of lithium battery is obtained.Fig. 3 show lithium battery discharge characteristic curve, horizontal axis
Indicate the electricity that lithium battery has lost.It is learnt according to lithium battery discharge characteristic curve, during the major part of electric discharge, lithium battery
Voltage variety very little；But in electric discharge initial stage and electric discharge latter stage, quickly, i.e., voltage change is fast for the voltage decline of lithium battery
Rate is larger.By the discharge voltage information and voltage changing rate of lithium battery, the discharge condition of lithium battery can be identified.One
In specific embodiment, the process of step S112 can be realized by following sub-step:
Step S1121: two discharge voltage information and the two discharge voltage information for obtaining lithium battery are corresponding
Temporal information.
Step S1122: the voltage changing rate of lithium battery is calculated according to two discharge voltage information and temporal information.In reality
In the application of border, the voltage changing rate of lithium battery can be calculated by formula (1):
Wherein, K indicates the voltage changing rate of lithium battery；Δ V=| V1-V2|, V1And V2Respectively indicate two discharge voltages
Information；Δ t=t2-t1, t1And t2The corresponding temporal information of respectively two discharge voltage information.
Step S113: judge whether the voltage changing rate of lithium battery is greater than or equal to preset rate-valve value.When lithium electricity
When the voltage changing rate in pond is greater than or equal to preset rate-valve value, step S114 is executed；When the voltage change speed of lithium battery
When rate is less than preset rate-valve value, return step S112.
Step S114: stop lithium battery to load discharge.When the discharge voltage of lithium battery is less than preset discharge voltage threshold
Value, and when voltage changing rate is greater than or equal to preset rate-valve value, it is believed that lithium battery enters or will enter quick
Decline stage, at this point, lithium battery should be cut off in time, i.e. stopping lithium battery continuing to discharge to load, to prevent lithium battery mistake
It puts.
Charging and discharging lithium battery control method provided in an embodiment of the present invention is charging to lithium battery using external power supply
When, the current voltage of lithium battery is acquired first, judges lithium battery whether in the last time electric discharge according to the current voltage of lithium battery
In over-discharge has occurred.By carrying out charge control stage by stage to lithium battery, be conducive to the electric energy storage for keeping lithium battery
It measures and prolongs its service life, reduce the maintenance frequency of lithium battery, and the preparation time of power supply system is made to be protected, favorably
In the power supply reliability for improving lithium battery.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
The embodiment of the invention also provides a kind of charging and discharging lithium battery control devices, as shown in figure 4, the charging and discharging lithium battery
Control device may include: voltage acquisition unit 401 and charge-discharge control unit 402.
Wherein, voltage acquisition unit 401 is listening to lithium battery access for monitoring whether lithium battery accesses external power supply
When external power supply, the current voltage of lithium battery is monitored；Its specific course of work can refer to step in above method embodiment
Described in S101.
When current voltage is less than the first charging voltage threshold value, charge-discharge control unit 402 is used to pass through preset first
Continuous current charges to lithium battery.When current voltage is greater than or equal to the second charging voltage threshold value, charge-discharge control unit 402
It is also used to charge to the lithium battery by preset second continuous current；Wherein, the second charging voltage threshold value is greater than institute
The first charging voltage threshold value is stated, second continuous current is greater than first continuous current.It is greater than or equal in current voltage
When preset third charging voltage threshold value, third charging voltage threshold value is greater than the second charging voltage threshold value, charge-discharge control unit
402 are also used to stop to charge to the lithium battery.The specific work process of charge-discharge control unit 402 can refer to above method reality
It applies in example described in step S102 to step S107.
Optionally, charge-discharge control unit 402 is also used to when current voltage is less than or equal to the 4th charging voltage threshold value,
It is charged by the second continuous current to lithium battery, until the current voltage of lithium battery reaches third charging voltage threshold value, it is specific
The course of work can refer in above method embodiment described in step S108 to step S109.
In addition, in a specific embodiment, voltage acquisition unit 401 can be also used for monitoring lithium battery whether access it is negative
It carries, when listening to lithium battery access load, monitors the discharge voltage of lithium battery；Its specific course of work can refer to above-mentioned side
In method embodiment described in step S110.Charge-discharge control unit 402 can be also used for being less than discharge voltage threshold value in discharge voltage
When obtain the voltage changing rate of lithium battery, and when voltage changing rate is greater than or equal to scheduled rate threshold value, stop to negative
Placing electricity；Its specific course of work can refer in above method embodiment described in step S111 to step S114.
The embodiment of the invention also provides a kind of power supply systems, as shown in figure 5, the power supply system may include processor
501, memory 502 and lithium battery 503.Wherein, processor 501, memory 502 and lithium battery 403 communicate to connect.Specifically,
Processor 501 can be connected with memory 502 by bus or other modes, in Fig. 5 for being connected by bus.
Processor 501 can be central processing unit (Central Processing Unit, CPU).Processor 501 may be used also
Think other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
The combination of the chips such as discrete hardware components or above-mentioned all kinds of chips.
Memory 502 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non-
Transient computer executable program and module, such as the corresponding program of charging and discharging lithium battery control method in the embodiment of the present invention
Instruction/module (for example, voltage acquisition unit shown in Fig. 4 401 and charge-discharge control unit 402).Processor 501 passes through operation
Non-transient software program, instruction and the module being stored in memory 502, thereby executing processor various function application with
And data processing, that is, realize the charging and discharging lithium battery control method in above method embodiment.
Memory 502 may include storing program area and storage data area, wherein storing program area can store operation system
Application program required for system, at least one function；It storage data area can the data etc. that are created of storage processor 501.In addition,
Memory 502 may include high-speed random access memory, can also include non-transient memory, and a for example, at least disk is deposited
Memory device, flush memory device or other non-transient solid-state memories.In some embodiments, it includes opposite that memory 502 is optional
In the remotely located memory of processor 501, these remote memories can pass through network connection to processor 501.Above-mentioned net
The example of network includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
One or more of modules are stored in the memory 502, when being executed by the processor 501, are held
Charging and discharging lithium battery control method in row embodiment as shown in Figure 1 to Figure 2.
Above-mentioned terminal device detail can correspond to corresponding associated description in embodiment referring to FIG. 1 to 2
Understood with effect, details are not described herein again.
It is that can lead to it will be understood by those skilled in the art that realizing all or part of the process in above-described embodiment method
Computer program is crossed to instruct relevant hardware and complete, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can for magnetic disk,
CD, read-only memory (Read-Only Memory, ROM), random access memory (Random Access
Memory, RAM), flash memory (Flash Memory), hard disk (Hard Disk Drive, abbreviation: HDD) or solid state hard disk
(Solid-State Drive, SSD) etc.；The storage medium can also include the combination of the memory of mentioned kind.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of charging and discharging lithium battery control method characterized by comprising
It monitors whether lithium battery accesses external power supply, when listening to lithium battery access external power supply, monitors the lithium battery
Current voltage；
When the current voltage is less than the first charging voltage threshold value, the lithium battery is filled by preset first continuous current
Electricity；
When the current voltage is greater than or equal to the second charging voltage threshold value, by preset second continuous current to the lithium
Battery charging；Wherein, the second charging voltage threshold value is greater than the first charging voltage threshold value, and second continuous current is big
In first continuous current；
When the current voltage is greater than or equal to preset third charging voltage threshold value, stop charging to the lithium battery；Institute
Third charging voltage threshold value is stated greater than the second charging voltage threshold value.
2. charging and discharging lithium battery control method as described in claim 1, which is characterized in that the charge control method of lithium battery
Further include:
When the current voltage is greater than or equal to the first charging voltage threshold value, and the current voltage is less than the second charging voltage threshold
When value, charged by preset second continuous current to the lithium battery.
3. charging and discharging lithium battery control method as described in claim 1, which is characterized in that the charge control method of lithium battery
Further include:
When the current voltage is less than preset second charging voltage threshold value, repeat described by preset first constant current
The step of electric current charges to the lithium battery, until the current voltage is greater than or equal to preset second charging voltage threshold value.
4. charging and discharging lithium battery control method as described in claim 1, which is characterized in that the charge control method of lithium battery
Further include:
When the current voltage is less than preset third charging voltage threshold value, repeat described by preset second constant current
The step of electric current charges to the lithium battery, until the current voltage is greater than or equal to preset third charging voltage threshold value.
5. charge control method of lithium battery according to any one of claims 1 to 4, which is characterized in that in the stopping pair
After the step of lithium battery charges, the charging and discharging lithium battery control method further include:
When the current voltage is less than or equal to the 4th charging voltage threshold value, the lithium battery is filled by the second continuous current
Electricity, until the current voltage of the lithium battery reaches third charging voltage threshold value；Wherein, the 4th charging voltage threshold value is less than
The third charging voltage threshold value.
6. charging and discharging lithium battery control method as claimed in claim 5, which is characterized in that the charging and discharging lithium battery controlling party
Method further include:
It monitors whether the lithium battery accesses load, when listening to the lithium battery access load, monitors the lithium battery
Discharge voltage information；
When the discharge voltage information is less than preset discharge voltage threshold value, the voltage changing rate of the lithium battery is obtained；
When the voltage changing rate of the lithium battery is greater than or equal to preset rate-valve value, stop to the load discharge.
7. charging and discharging lithium battery control method as claimed in claim 6, which is characterized in that the electricity for obtaining the lithium battery
Press rate of change, comprising:
Obtain the two discharge voltage information and the corresponding time letter of described two discharge voltage information of the lithium battery
Breath；
The voltage changing rate of the lithium battery is calculated according to described two discharge voltage information and the temporal information.
8. charging and discharging lithium battery control method as claimed in claim 7, which is characterized in that pass through
Calculate the voltage changing rate of the lithium battery；
Wherein, K indicates the voltage changing rate of the lithium battery；Δ V=| V1-V2|, V1And V2Respectively indicate described two electric discharges
Information of voltage；Δ t=t2-t1, t1And t2The corresponding temporal information of respectively described two discharge voltage information.
9. a kind of charging and discharging lithium battery control device characterized by comprising
Voltage acquisition unit, for monitoring whether lithium battery accesses external power supply, when listening to lithium battery access external power supply,
Monitor the current voltage of the lithium battery；
Charge-discharge control unit, when the current voltage is less than the first charging voltage threshold value, for permanent by preset first
Galvanic electricity stream charges to the lithium battery；
When the current voltage is greater than or equal to the second charging voltage threshold value, the charge-discharge control unit is also used to by pre-
If the second continuous current charge to the lithium battery；Wherein, the second charging voltage threshold value is greater than the first charging electricity
Threshold value is pressed, second continuous current is greater than first continuous current；
When the current voltage is greater than or equal to preset third charging voltage threshold value, the charge-discharge control unit is also used to
Stop charging to the lithium battery；The third charging voltage threshold value is greater than the second charging voltage threshold value.
10. a kind of power supply system characterized by comprising
Lithium battery, memory and processor；
Connection is communicated with each other between the lithium battery, the memory and the processor, and calculating is stored in the memory
Machine instruction, the processor is by executing the computer instruction, thereby executing such as described in any item of the claim 1 to 8
Charging and discharging lithium battery control method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910257306.8A CN109980732A (en) | 2019-04-01 | 2019-04-01 | Charging and discharging lithium battery control method and power supply system |
| PCT/CN2019/108614 WO2020199539A1 (en) | 2019-04-01 | 2019-09-27 | Lithium battery charge and discharge control method and power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910257306.8A CN109980732A (en) | 2019-04-01 | 2019-04-01 | Charging and discharging lithium battery control method and power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109980732A true CN109980732A (en) | 2019-07-05 |
Family
ID=67082092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910257306.8A Pending CN109980732A (en) | 2019-04-01 | 2019-04-01 | Charging and discharging lithium battery control method and power supply system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109980732A (en) |
| WO (1) | WO2020199539A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446515A (en) * | 2020-04-02 | 2020-07-24 | 联想(北京)有限公司 | Charging method and device and electronic equipment |
| WO2020199539A1 (en) * | 2019-04-01 | 2020-10-08 | 漳州科华技术有限责任公司 | Lithium battery charge and discharge control method and power supply system |
| CN112803524A (en) * | 2020-12-31 | 2021-05-14 | 科华恒盛股份有限公司 | Battery charging control method and device and terminal |
| CN113346152A (en) * | 2020-03-03 | 2021-09-03 | 丰田自动车株式会社 | Battery system and control method thereof |
| CN114696431A (en) * | 2022-05-09 | 2022-07-01 | 上海玫克生储能科技有限公司 | Charging and discharging efficiency ratio adjusting method, storage medium and adjusting device of energy storage power station |
| CN116742666A (en) * | 2023-08-10 | 2023-09-12 | 山东赛马力发电设备有限公司 | Charging and discharging control method and system of energy storage system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148908A (en) * | 1994-03-28 | 1997-04-30 | 约翰Y·希默 | Method and apparatus for processing batteries |
| CN101604851A (en) * | 2008-06-13 | 2009-12-16 | 鸿富锦精密工业（深圳）有限公司 | The supervisory control system of storage battery LVD value and method |
| CN104410116A (en) * | 2014-11-18 | 2015-03-11 | 深圳市中兴移动通信有限公司 | Quick charging device and quick charging method |
| CN107171384A (en) * | 2017-05-31 | 2017-09-15 | 上海青橙实业有限公司 | The charge control method and device of battery |
| CN208334596U (en) * | 2018-04-24 | 2019-01-04 | 唐山松下产业机器有限公司 | Battery monitoring device and battery modules |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078716B (en) * | 2014-07-14 | 2017-03-22 | 广东西奥物联网科技股份有限公司 | Battery charging method and processor |
| CN109980732A (en) * | 2019-04-01 | 2019-07-05 | 漳州科华技术有限责任公司 | Charging and discharging lithium battery control method and power supply system |
-
2019
- 2019-04-01 CN CN201910257306.8A patent/CN109980732A/en active Pending
- 2019-09-27 WO PCT/CN2019/108614 patent/WO2020199539A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148908A (en) * | 1994-03-28 | 1997-04-30 | 约翰Y·希默 | Method and apparatus for processing batteries |
| CN101604851A (en) * | 2008-06-13 | 2009-12-16 | 鸿富锦精密工业（深圳）有限公司 | The supervisory control system of storage battery LVD value and method |
| CN104410116A (en) * | 2014-11-18 | 2015-03-11 | 深圳市中兴移动通信有限公司 | Quick charging device and quick charging method |
| CN107171384A (en) * | 2017-05-31 | 2017-09-15 | 上海青橙实业有限公司 | The charge control method and device of battery |
| CN208334596U (en) * | 2018-04-24 | 2019-01-04 | 唐山松下产业机器有限公司 | Battery monitoring device and battery modules |
Non-Patent Citations (1)
| Title |
|---|
| 姜久春: "《电动汽车动力电池应用技术》", 30 June 2016 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020199539A1 (en) * | 2019-04-01 | 2020-10-08 | 漳州科华技术有限责任公司 | Lithium battery charge and discharge control method and power supply system |
| CN113346152A (en) * | 2020-03-03 | 2021-09-03 | 丰田自动车株式会社 | Battery system and control method thereof |
| CN113346152B (en) * | 2020-03-03 | 2024-03-12 | 丰田自动车株式会社 | Battery system and control method thereof |
| CN111446515A (en) * | 2020-04-02 | 2020-07-24 | 联想(北京)有限公司 | Charging method and device and electronic equipment |
| CN112803524A (en) * | 2020-12-31 | 2021-05-14 | 科华恒盛股份有限公司 | Battery charging control method and device and terminal |
| CN114696431A (en) * | 2022-05-09 | 2022-07-01 | 上海玫克生储能科技有限公司 | Charging and discharging efficiency ratio adjusting method, storage medium and adjusting device of energy storage power station |
| CN114696431B (en) * | 2022-05-09 | 2022-09-30 | 上海玫克生储能科技有限公司 | Charging and discharging efficiency ratio adjusting method, storage medium and adjusting device of energy storage power station |
| CN116742666A (en) * | 2023-08-10 | 2023-09-12 | 山东赛马力发电设备有限公司 | Charging and discharging control method and system of energy storage system |
| CN116742666B (en) * | 2023-08-10 | 2023-10-31 | 山东赛马力发电设备有限公司 | Charging and discharging control method and system of energy storage system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020199539A1 (en) | 2020-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109980732A (en) | Charging and discharging lithium battery control method and power supply system | |
| US20170276733A1 (en) | Method for screening lithium ion battery | |
| US10345388B2 (en) | Method for screening lithium ion battery | |
| US11374265B2 (en) | Battery repair method and apparatus | |
| US10211659B2 (en) | Charging method and apparatus for rechargeable battery | |
| WO2015196641A1 (en) | Battery charging method and device, and computer storage medium | |
| JP5451761B2 (en) | Fast charger for supercapacitors | |
| RU2015145466A (en) | METHOD OF CYCLING OF LITHIUM-SULFUR ELEMENT | |
| CN104505905A (en) | Single-charged and series-discharged lithium battery pack | |
| WO2019019561A1 (en) | Detection and maintenance method and device for server power supply system | |
| CN110797577A (en) | Lithium ion battery charging method and device and computer storage medium | |
| EP2854254A1 (en) | Charging station having battery cell balancing system | |
| CN112636406B (en) | Battery management method and device for uninterruptible power supply | |
| US20240055872A1 (en) | Charging method of energy storage power supply, charging apparatus therefor, device, and medium | |
| CN113745673A (en) | Battery cluster electrifying method and system, battery management system and battery cluster | |
| CN110970670B (en) | Power battery management method and device and computer readable storage medium | |
| CN104091971B (en) | A kind of accumulator devulcanization apparatus and method | |
| US20160359347A1 (en) | Battery Management Apparatus, Portable Power Source and Battery Management Method | |
| CN204597550U (en) | A kind of battery pack with stand-by unit | |
| CN106797132B (en) | Method for charging batteries, charging system, charger and battery | |
| CN114552711A (en) | Battery cell control method and device and BMS equipment | |
| US10243243B2 (en) | Battery and charging method | |
| SE534553C2 (en) | Method, control device, system and computer program product for power supply of a radio base station | |
| JP6265010B2 (en) | Power storage system | |
| CN108128186B (en) | Lead-acid power battery management system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190705 |
|
| RJ01 | Rejection of invention patent application after publication |