CN109245229A - A kind of evaluation method, the device in remaining battery charging time - Google Patents
A kind of evaluation method, the device in remaining battery charging time Download PDFInfo
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Abstract
This application discloses a kind of evaluation methods in remaining battery charging time, device and method for charging batteries and device, it include: the current SOC for obtaining battery, it is directed to every sub- constant-current charge process, based on battery in sub- constant-current charge process corresponding maximum allowable charging current, calculate sub- constant-current charge time of battery during sub- constant-current charge, wherein, constant-current charge process is that the SOC of battery is increased to the charging process of boundary SOC by current SOC, calculate the constant voltage charging time of battery during constant-voltage charge, constant-voltage charge process is since the SOC of battery reaches boundary SOC up to battery meets the charging process that charging finishes condition, calculate the temporal summation of constant voltage charging time and all sub- constant-current charge times, the remaining charging time as battery.In this way, user can know the remaining battery charging time in real time；Moreover, the remaining charging time being calculated is more acurrate.
Description
Technical field
This application involves battery technology fields, more particularly to evaluation method, the device in a kind of remaining battery charging time
And method for charging batteries, device.
Background technique
The remaining charging time of battery refers to that battery is full of from current electric quantity to battery when battery is in charged state
Charging time needed for electricity.With the generally use of battery system, user when being charged the battery using charging unit,
It would generally be concerned about the remaining charging time of battery under current state.
Therefore, when charging the battery, need a kind of evaluation method in remaining battery charging time, with estimate by
Battery be charged to Full Power State also and need how long, inform in real time to user.
Summary of the invention
The technical problem to be solved in the embodiments of the present application is that provide a kind of remaining battery charging time evaluation method and
Device, with estimate battery from current electric quantity be charged to Full Power State needed for the charging time.
In a first aspect, the embodiment of the present application provides a kind of evaluation method in remaining battery charging time, the method packet
It includes:
Obtain the current state-of-charge SOC of battery；
It is directed to every sub- constant-current charge process during constant-current charge, based on the battery in the sub- constant-current charge mistake
Corresponding maximum allowable charging current in journey, when calculating sub- constant-current charge of battery during the sub- constant-current charge
Between, the constant-current charge process is that the SOC of the battery is increased to the charging process of boundary SOC by the current SOC；
The constant voltage charging time of the battery during calculating constant-voltage charge, the constant-voltage charge process are from the battery
SOC reach the boundary SOC and start until the battery meets charging and finishes the charging process of condition；
Calculate the temporal summation of the constant voltage charging time Yu all sub- constant-current charge times, the residue as the battery
Charging time.
In some possible embodiments, the method also includes:
It is directed to every sub- constant-current charge process during constant-current charge, the sub- constant-current charge process is obtained and starts when institute
State the battery at the end of the corresponding first maximum allowable charging current of SOC and the sub- constant-current charge process of battery
The corresponding second maximum allowable charging current of SOC；
The average current of the described first maximum allowable charging current and the second maximum allowable charging current is calculated, and
Using the average current as the battery the corresponding maximum allowable charging current in the sub- constant-current charge process.
In some possible embodiments, the SOC for obtaining battery when the sub- constant-current charge process starts
The SOC of the battery corresponding at the end of corresponding first maximum allowable charging current and the sub- constant-current charge process
Two maximum allowable charging currents, comprising:
The SOC of battery when being started according to the Current Temperatures of the battery and the sub- constant-current charge process is determined
The first maximum allowable charging current；
The SOC of the battery at the end of according to the Current Temperatures of the battery and the sub- constant-current charge process is determined
The second maximum allowable charging current.
In some possible embodiments, the method also includes:
Obtain the practical maximum input charging current of the battery；
Then, described to be based on the battery corresponding maximum allowable charging current in the sub- constant-current charge process, it calculates
Sub- constant-current charge time of battery during the sub- constant-current charge out, comprising:
Judge the size of the maximum allowable charging current and the practical maximum input charging current；
If the maximum allowable charging current is less than the maximum input charging current of the reality, calculate with described maximum fair
Perhaps when charging current charges to the battery, when sub- constant-current charge of battery during the sub- constant-current charge
Between；
If the maximum allowable charging current is more than or equal to the practical maximum input charging current, calculate with institute
When stating practical maximum input charging current and charging to the battery, son of battery during the sub- constant-current charge
The constant-current charge time.
In some possible embodiments, described to be based on the corresponding maximum allowable charging electricity of the sub- constant-current charge process
Stream, calculates sub- constant-current charge time of battery during the sub- constant-current charge, comprising:
Calculate when the sub- constant-current charge process starts institute at the end of the SOC of the battery and the sub- constant-current charge process
State the SOC difference between the SOC of battery；
Obtain the total capacity of the battery under Current Temperatures；
According to the total capacity of the battery under the SOC difference, the Current Temperatures and the maximum allowable charging electricity
Stream, calculates the sub- constant-current charge time.
In some possible embodiments, it is described calculate constant-voltage charge during the battery constant voltage charging time,
Include:
Target current during calculating constant-voltage charge between the initial charge current and the default cut-off current is poor
Value；
According to the corresponding relationship of the current differential and charging time that pre-establish, determine that the target current difference is corresponding
Constant voltage charging time.
Second aspect, the embodiment of the present application provide a kind of method for charging batteries, which comprises
Obtain the current state-of-charge SOC of battery under current state；
During every sub- constant-current charge of constant-current charge process, based on the battery in the sub- constant-current charge process
Interior corresponding maximum allowable charging current charges to the battery, the constant-current charge process be the battery SOC by
The current SOC increases to the charging process of boundary SOC；
It is charged with constant voltage to the battery, wherein constant-voltage charge process is reaches institute from the SOC of the battery
Boundary SOC is stated to start until the battery meets the charging process that charging finishes condition.
In some possible embodiments, the battery is corresponding in the sub- constant-current charge process maximum allowable fills
Electric current is that the average current based on the first maximum allowable charging current and the second maximum allowable charging current is determined,
The first maximum allowable charging current is that the SOC of battery when the sub- constant-current charge process starts is corresponding maximum allowable
Charging current, the second maximum allowable charging current are that the SOC of the battery at the end of the sub- constant-current charge process is corresponding
Maximum allowable charging current.
The third aspect, the embodiment of the present application also provides a kind of estimation device in remaining battery charging time, described devices
Include:
SOC obtains module, for obtaining the current state-of-charge SOC of battery；
First computing module is based on the battery for being directed to every sub- constant-current charge process during constant-current charge
The corresponding maximum allowable charging current in the sub- constant-current charge process calculates the battery in the sub- constant-current charge mistake
Sub- constant-current charge time in journey, the constant-current charge process are that the SOC of the battery increases to boundary by the current SOC
The charging process of SOC；
Second computing module, for calculating the constant voltage charging time of the battery during constant-voltage charge, the constant pressure is filled
Electric process is since the SOC of the battery reaches the boundary SOC up to the battery meets the charging that charging finishes condition
Process；
Third computing module, for calculating the temporal summation of the constant voltage charging time Yu all sub- constant-current charge times,
The remaining charging time as the battery.
In some possible embodiments, described device further include:
First electric current obtains module, for being directed to every sub- constant-current charge process during constant-current charge, described in acquisition
The corresponding first maximum allowable charging current of the SOC of sub- constant-current charge process battery when starting and the sub- constant current are filled
The corresponding second maximum allowable charging current of the SOC of the battery at the end of electric process；
4th computing module, for calculating the described first maximum allowable charging current and the second maximum allowable charging
The average current of electric current, and it is corresponding maximum fair in the sub- constant-current charge process using the average current as the battery
Perhaps charging current.
In some possible embodiments, first electric current obtains module, comprising:
First determination unit, for starting when institute according to the Current Temperatures and the sub- constant-current charge process of the battery
The SOC for stating battery determines the described first maximum allowable charging current；
Second determination unit, for institute at the end of according to the Current Temperatures of the battery and the sub- constant-current charge process
The SOC for stating battery determines the described second maximum allowable charging current.
In some possible embodiments, described device further include:
Second electric current obtains module, for obtaining the practical maximum input charging current of the battery；
Then, first computing module, comprising:
Judging unit, for judging that the maximum allowable charging current inputs the big of charging current with the practical maximum
It is small；
First computing unit, if being less than the practical maximum input charging current for the maximum allowable charging current,
When then calculating charges to the battery with the maximum allowable charging current, the battery is in the sub- constant-current charge process
In the sub- constant-current charge time；
Second computing unit fills if being more than or equal to the practical maximum input for the maximum allowable charging current
Electric current, then when calculating charges to the battery with the practical maximum input charging current, the battery is in the son
The sub- constant-current charge time during constant-current charge.
In some possible embodiments, first computing module, comprising:
Third computing unit, it is permanent for calculating the SOC of the battery and the son when the sub- constant-current charge process starts
SOC difference at the end of current charge process between the SOC of the battery；
Capacity acquisition unit, for obtaining the total capacity of the battery under Current Temperatures；
4th computing unit, for according to the total capacity of the battery and institute under the SOC difference, the Current Temperatures
Maximum allowable charging current is stated, the sub- constant-current charge time is calculated.
In some possible embodiments, second computing module, comprising:
5th computing unit, for calculating the initial charge current and the default cut-off current during constant-voltage charge
Between target current difference；
Third determination unit, described in determining according to the corresponding relationship of current differential and charging time pre-established
The corresponding constant voltage charging time of target current difference.
Fourth aspect, the embodiment of the present application also provides a kind of battery charger, described device includes:
Module is obtained, for obtaining the current state-of-charge SOC of battery under current state；
Constant-current charge module, for being existed during every sub- constant-current charge of constant-current charge process based on the battery
Corresponding maximum allowable charging current charges to the battery in the sub- constant-current charge process, the constant-current charge process
For the battery SOC by the current SOC increase to boundary SOC charging process；
Constant-voltage charge module, for being charged with constant voltage to the battery, wherein constant-voltage charge process is from institute
The SOC for stating battery reaches the boundary SOC and starts until the battery meets the charging process that charging finishes condition.
In some possible embodiments, the battery is corresponding in the sub- constant-current charge process maximum allowable fills
Electric current is that the average current based on the first maximum allowable charging current and the second maximum allowable charging current is determined,
The first maximum allowable charging current is that the SOC of battery when the sub- constant-current charge process starts is corresponding maximum allowable
Charging current, the second maximum allowable charging current are that the SOC of the battery at the end of the sub- constant-current charge process is corresponding
Maximum allowable charging current.
In the above-mentioned implementation of the embodiment of the present application, the current SOC of battery under available current state, then,
The sub- constant-current charge time needed for every sub- constant-current charge process during constant-current charge can be calculated, it specifically can be needle
For every sub- constant-current charge process, battery corresponding maximum allowable charging electricity in the sub- constant-current charge process can be based on
Stream, calculates sub- constant-current charge time of battery during the sub- constant-current charge, wherein the constant-current charge process is battery
SOC is increased to the charging process of boundary SOC by current SOC；Then, the constant pressure that can calculate battery during constant-voltage charge is filled
Electric time, the constant-voltage charge process are to finish filling for condition up to battery meets charging since the SOC of battery reaches boundary SOC
Electric process；Finally, the temporal summation of constant voltage charging time Yu all sub- constant-current charge times can be calculated, then, when obtained
Between summation be battery the remaining charging time.As it can be seen that by calculate battery charging time needed for constant-current charge process with
And the charging time needed for constant-voltage charge process, available battery residue needed for being charged to Full Charge Capacity as current electric quantity are filled
The electric time, in this way, user during being charged the battery using charging unit, can know in real time currently also need how long
Battery could be charged to the amount of working to the last minute state.Moreover, the sub- constant-current charge time of each sub- constant-current charge process of difference, is all based on
Battery maximum allowable charging current corresponding in respective sub- constant-current charge process is determined, and is not based on one
Fixed current value calculates sub- constant-current charge time of all sub- constant-current charge processes, so that the residue being calculated
Charging time is more accurate.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations as described in this application
Example, for those of ordinary skill in the art, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of an exemplary application scene in the embodiment of the present application；
Fig. 2 is a kind of evaluation method flow diagram in remaining battery charging time in the embodiment of the present application；
Fig. 3 is a kind of flow diagram of method for charging batteries in the embodiment of the present application；
Fig. 4 is a kind of structural schematic diagram of the estimation device in remaining battery charging time in the embodiment of the present application；
Fig. 5 is a kind of structural schematic diagram of battery charger in the embodiment of the present application.
Specific embodiment
User using charging unit when being charged the battery, it usually needs knows that battery is charged to full electricity from current electric quantity
In the remaining charging time needed for amount, it is based on this, this application provides a kind of evaluation methods in remaining battery charging time, pass through meter
Constant voltage charging time and the summation of all sub- constant-current charge times are calculated, to determine that battery is charged to Full Charge Capacity also by current electric quantity
It need to be how long.Specifically, under available current state battery current SOC (State of Charge, state-of-charge, again
Can be described as remaining capacity), it is then possible to sub- constant current needed for every sub- constant-current charge process during calculating constant-current charge
Charging time specifically can be and be directed to every sub- constant-current charge process, can be based on battery in the sub- constant-current charge process
Corresponding maximum allowable charging current calculates sub- constant-current charge time of battery during the sub- constant-current charge, wherein should
Constant-current charge process is that the SOC of battery is increased to the charging process of boundary SOC by current SOC；Then, constant pressure can be calculated to fill
The constant voltage charging time of battery in electric process, the constant-voltage charge process are since the SOC of battery reaches boundary SOC up to battery
Meet the charging process that charging finishes condition；Finally, can calculate constant voltage charging time and all sub- constant-current charge times when
Between summation, then, obtained temporal summation is charging duration, i.e. battery needed for the battery is charged to Full Charge Capacity as current electric quantity
The remaining charging time.
As it can be seen that by calculating battery charging time needed for constant-current charge process and needed for constant-voltage charge process
In the charging time, available battery is being charged to the remaining charging time needed for Full Charge Capacity as current electric quantity, in this way, user is utilizing
During charging unit charges the battery, can know in real time currently also needs how long battery could be charged to the amount of working to the last minute shape
State.Moreover, the sub- constant-current charge time of each sub- constant-current charge process of difference, is all based on battery in respective sub- constant-current charge mistake
Corresponding maximum allowable charging current is determined in journey, and is not all to calculate based on a fixed current value
The sub- constant-current charge time of sub- constant-current charge process, so that the remaining charging time being calculated is more accurate.
For example, the embodiment of the present application can be applied to exemplary application scene as shown in Figure 1.In this scenario,
User can use charging pile 101 and charge to the power battery on electric vehicle 102, be inserted into the plug in rifle of charging pile 101
After electric vehicle 102, charging pile 101 starts to charge to power battery.It is moved under the available current state of electric vehicle 102
The current SOC of power battery, and start to carry out constant-current charge process, wherein during constant-current charge, the SOC of power battery
Boundary SOC can be increased to by current SOC.It is directed to every sub- constant-current charge process, electric vehicle 102 can be based on battery at this
It is corresponding in the sub- constant-current charge process to calculate power battery for corresponding maximum allowable charging current in sub- constant-current charge process
The corresponding sub- constant current of every sub- constant-current charge process can be calculated during constant-current charge in this way and fill the sub- constant-current charge time
The electric time.Then, electric vehicle 102 can calculate the constant voltage charging time required when carrying out constant-voltage charge to power battery,
The constant-voltage charge process be the SOC of power battery since reaching boundary SOC until battery, which meets to charge, finishes the charging of condition
Process, for example, the charging current that can be power battery is reduced to the charging process of default cut-off current by initial charge current,
And the SOC that the initial charge current of power battery is power battery is the electric current to charge when presetting SOC to power battery.This
Sample, electric vehicle 102 can be by all sub- constant-current charge times and the temporal summation of constant voltage charging time, as this estimation
Power battery the remaining charging time；Also, for the ease of informing user, electric vehicle 102 can also be by configuring and vehicle
The remaining charging time of this power battery estimated is presented to the user by the display screen on, in order to which user can be
Be informed on display screen power battery under current state it is fully charged also need how long.
It should be noted that above-mentioned scene is only a Sample Scenario provided by the embodiments of the present application, the embodiment of the present application
It is not limited to this scene.
In order to make the above objects, features, and advantages of the present application more apparent, below in conjunction with attached drawing to this Shen
Please the various non-limiting implementations in embodiment illustrate.Obviously, described embodiment is the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
All other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Referring to Fig.2, Fig. 2 shows the signals of the process of the evaluation method of battery remaining power a kind of in the embodiment of the present application
Figure, this method can specifically include:
S201: the current SOC of battery under current state is obtained.
When charging the battery, the time needed for electricity and battery possessed by battery itself are charged to Full Power State
Length is related.It is appreciated that the electricity for needing to be filled with into battery can be relatively if battery currently has more electricity
It is few, so as to which the electricity of battery is charged to Full Power State within a short period of time；And if battery currently possessed by electricity compared with
Few, then the required electricity being filled with to battery is more, so that the time charged the battery is relatively long.Based on this,
When estimating the remaining battery charging time under current state, the current SOC of battery under available current state.
S202: it is directed to every sub- constant-current charge process during constant-current charge, based on battery in the sub- constant-current charge mistake
Corresponding maximum allowable charging current in journey calculates sub- constant-current charge time of battery during sub- constant-current charge, the perseverance
Current charge process is that the SOC of battery is increased to the charging process of boundary SOC by current SOC.
In the present embodiment, constant-current charge process can be divided into multiple sub- constant-current charge processes, in this way, every sub- constant current
Charging process corresponds to the section SOC of a battery.Such as, it is assumed that current SOC is 70%, and the SOC that demarcates is 90%, then according to
Constant-current charge process is divided into 4 sub- constant-current charge processes by 5% interval SOC, and the respectively SOC of battery is by 70% charging
To 75% sub- constant-current charge process, SOC by 75% charges to 80% sub- constant-current charge process, SOC is charged to by 80%
85% sub- constant-current charge process and SOC by 85% charge to 90% sub- constant-current charge process.Then, constant-current charge process
Constant-current charge time, the temporal summation of as each sub- constant-current charge process corresponding sub- constant-current charge time.
In a kind of illustrative embodiments for calculating the sub- constant-current charge time, during can calculating sub- constant-current charge
SOC difference when beginning at the end of the SOC of battery and sub- constant-current charge process between the SOC of battery, and it is current to obtain battery
Total capacity.It is appreciated that being that the SOC difference and battery are currently total to the electricity that battery is filled with during sub- constant-current charge
The product of capacity.It is with maximum allowable charging current corresponding with the sub- constant-current charge process and during sub- constant-current charge
It charges the battery, therefore, according to the SOC difference, the current total capacity of battery and corresponding with the sub- constant-current charge process
Maximum allowable charging current, the sub- constant-current charge time of the sub- constant-current charge process can be calculated.Wherein, sub- constant-current charge
The calculation formula of time can be such that
As an example it is assumed that the SOC of battery is 75% when sub- constant-current charge process starts, at the end of the SOC of battery be
80%, the total capacity of battery is 60Ah (when peace *) under current state, and maximum allowable charging current is 3A, then the sub- constant-current charge
Time is
Wherein, at a temperature of battery is in different, the total capacity of battery can change, therefore, in the current shape of determination
When the total capacity of the battery under state, the temperature value of battery under current state usually can be first determined, and then can be according to battery
Temperature value determine the total capacity under battery current state.
As procedure described above, when can calculate the sub- constant-current charge of every sub- constant-current charge process during constant-current charge
Between.
In practical application, when charging the battery, electricity possessed by battery is different, then battery allows maximum
Charging current may be not identical, for example, maximum allowable charging current may be 60A when the SOC of battery is 50%, and
When the SOC of battery is 70%, then the maximum allowable charging current of battery may be 56A.Therefore, sub- constant-current charge mistake is being estimated
When sub- constant-current charge time in journey, maximum allowable charging current corresponding to the sub- constant-current charge process can be first determined.
In a kind of illustrative embodiments for determining maximum allowable charging current, battery when available sub- constant-current charge process starts
Corresponding second maximum of battery SOC permits at the end of the corresponding first maximum allowable charging current of SOC and sub- constant-current charge process
Perhaps charging current, and then the average electricity between the first maximum allowable charging current and the second permission charging current can be calculated
Stream, and using the average current as battery the corresponding maximum allowable charging current in sub- constant-current charge process.
Certainly, only it is used as exemplary illustration, in practical application, be also possible to sub- constant-current charge mistake in above embodiment
The corresponding maximum allowable charging current of battery SOC of any one charging moment in journey, it is corresponding as the sub- constant-current charge process
Maximum allowable charging current, for example, the SOC that can be battery when starting sub- constant-current charge process corresponding first maximum permits
Perhaps charging current, as the corresponding maximum allowable charging current of the sub- constant-current charge process；Alternatively, can be sub- constant-current charge
The corresponding second maximum allowable charging current of the SOC of battery at the end of process, as the corresponding maximum of the sub- constant-current charge process
Allow charging current etc., there are a variety of in specific embodiment, details are not described herein.
Wherein, during constant-current charge, the corresponding maximum allowable charging current of the battery SOC of any time, Ke Yigen
It is determined according to battery SOC and the corresponding relationship of maximum allowable charging current.That is, after the SOC for knowing battery current time, it can
To determine the corresponding maximum allowable charging current of the SOC of current time battery according to the corresponding relationship.And for battery SOC
With the corresponding relationship between maximum allowable charging current, in advance can by experiment be obtained, certainly, the corresponding relationship be for
In belonging to same type or same series-produced battery with the battery, and for different types of battery, corresponding relationship is logical
It can often have a certain difference.
In practical application, the temperature of battery (or battery core) can also have the maximum allowable charging current of battery certain
Influence.For example, if the SOC of battery is 50%, the maximum allowable charging of battery is electric at this time when the temperature of battery is 10 DEG C
Stream may be 70A, and when the temperature of battery is 30 DEG C, even if the SOC of battery is similarly 50%, but the maximum of battery permits at this time
Perhaps charging current may be 75A.Therefore, influence of the battery-based temperature to the maximum allowable charging current of battery, can be pre-
First establish the corresponding relationship of the maximum allowable charging current of the temperature of battery, the SOC of battery and battery.
Then, the corresponding first maximum allowable charging current of battery SOC, Yi Jizi when determining that sub- constant-current charge process starts
At the end of constant-current charge process when the corresponding second maximum allowable charging current of battery SOC, the Current Temperatures of available battery,
Then, using the temperature of battery, the SOC of battery and battery maximum allowable charging current corresponding relationship, can be according to battery
Current Temperatures and sub- constant-current charge process when starting the SOC of battery determine the first maximum allowable charging current, and according to
The SOC of battery determines the second maximum allowable charging current at the end of the Current Temperatures of battery and sub- constant-current charge process.
In some scenes of practical application, when carrying out constant-current charge to battery using charging unit, it is potentially based on hardware
The limitation of condition is so that the maximum charging current that charging unit can be output, it is corresponding maximum allowable to be less than sub- constant-current charge process
Charging current, at this point, when estimating the remaining charging time of battery, if still being filled with maximum allowable charging current to estimate sub- constant current
The sub- constant-current charge time of electric process then can cause large error to the estimation in remaining charging time.Therefore, in some embodiment party
In formula, the practical maximum input charging current of available battery (or can be understood as the maximum that charging unit can be output
Charging current), then, when calculating the sub- constant-current charge time of sub- constant-current charge process, it can be determined that maximum allowable charging current
With the size of practical maximum input charging current, if maximum allowable charging current is less than, reality is maximum to input charging current, table
The maximum charging current that bright battery can bear is less than the maximum charging current that can be provided of charging unit, then can calculate with
When maximum allowable charging current charges the battery, the battery required sub- constant current that carries out charging during sub- constant-current charge is filled
The electric time；And if maximum allowable charging current is more than or equal to practical maximum input charging current, show charging unit institute
The maximum charging current that can be exported is unable to reach the maximum allowable charging current that battery can bear, then can calculate with maximum
Allow charging current when charging the battery, battery charge during sub- constant-current charge required sub- constant-current charge when
Between.
S203: calculating the constant voltage charging time of battery during constant-voltage charge, which is the SOC from battery
Reach boundary SOC to start until battery meets the charging process that charging finishes condition.
In a kind of illustrative specific embodiment, constant-voltage charge process specifically can be the charging current of battery by first
Beginning charging current is reduced to the charging process of preset cut-off current, which is that the SOC of battery reaches boundary
The charging current that charging unit charges the battery when SOC.It is appreciated that after the electricity of battery reaches a certain level (such as
Possessed electricity when reaching boundary SOC), battery polarization internal resistance normally results in that empty voltage is higher, for the ease of the electricity of battery
Amount can be charged to Full Power State faster, can be charged the battery using constant voltage mode, in the process, battery
Charging current may gradually decrease.Then, cut-off current can be preset, for characterize work as battery charging current reach pre-
If cut-off current when, constant-voltage charge process terminates.
Based on this, in the present embodiment, it is corresponding with current differential constant voltage charging time can be established in the lab in advance
Relationship, wherein difference of the current differential between initial charge current and preset cut-off current.In this way, right obtaining this
After should being related to, the target current difference between the initial charge current and cut-off current of battery can be first calculated, it is then sharp
With the corresponding relationship, constant voltage charging time corresponding with the target current difference is determined.
It should be noted that usually can first determine electricity in the corresponding constant voltage charging time of estimation constant-voltage charge process
The SOC in pond is initial charge current when demarcating SOC, and in a kind of example, the occurrence of initial charge current can be basis
The SOC of practical maximum input charging current and battery is that corresponding maximum allowable charging current is determined when demarcating SOC.Tool
Body, it, can be by the maximum allowable charging current if practical maximum input charging current is greater than the maximum allowable charging current
It, can be with if practical maximum input charging current is less than or equal to the maximum allowable charging current as initial charge current
Using the practical maximum input charging current as initial charge current.
S204: calculating the temporal summation of constant voltage charging time and all sub- constant-current charge times, and the residue as battery is filled
The electric time.
In the present embodiment, during calculating constant-current charge the constant-current charge time of every sub- constant-current charge process with
And after the corresponding constant voltage charging time of constant-voltage charge process, its temporal summation can will be calculated, and using the temporal summation as this
The remaining battery charging time of secondary estimation.
In the present embodiment, the current SOC of battery under available current state, it is then possible to calculate constant-current charge mistake
The sub- constant-current charge time needed for every sub- constant-current charge process in journey, it specifically can be and be directed to every sub- constant-current charge mistake
Journey can be based on battery corresponding maximum allowable charging current in the sub- constant-current charge process, calculate battery in son perseverance
The sub- constant-current charge time during current charge, wherein the constant-current charge process is that the SOC of battery is increased to point by current SOC
The charging process of boundary SOC；Then, the constant voltage charging time of battery during constant-voltage charge, the constant-voltage charge mistake can be calculated
Journey is since the SOC of battery reaches boundary SOC up to battery meets the charging process that charging finishes condition；Finally, can count
The temporal summation of constant voltage charging time and all sub- constant-current charge times is calculated, then, obtained temporal summation is the surplus of battery
The remaining charging time.As it can be seen that by calculating battery charging time needed for constant-current charge process and in constant-voltage charge process institute
In the charging time needed, available battery is being charged to the remaining charging time needed for Full Charge Capacity as current electric quantity, in this way, user exists
During being charged the battery using charging unit, it can know currently also to need how long battery could be charged in real time and work to the last minute
Amount state.Moreover, the sub- constant-current charge time of each sub- constant-current charge process of difference, is all based on battery and fills in respective sub- constant current
Corresponding maximum allowable charging current is determined in electric process, and is not calculated based on a fixed current value
The sub- constant-current charge time of all sub- constant-current charge processes, so that the remaining charging time being calculated is more accurate.
In addition, the embodiment of the present application also provides a kind of method for charging batteries.The application is shown refering to Fig. 3, Fig. 3 to implement
A kind of flow diagram of method for charging batteries in example, this method can specifically include:
S301: the current SOC of battery under current state is obtained.
In the present embodiment, battery is charged to the process of full power state by charging unit, may include constant-current charge process and
Constant-voltage charge process.Wherein, constant-current charge process is that the SOC of battery is increased to the charging process of boundary SOC by current SOC, should
Boundary SOC can be preset value；Constant-voltage charge process is to charge since the SOC of battery reaches boundary SOC up to battery meets
Finish the charging process of condition.Then, when charging the battery using charging unit, current SOC can be prejudged whether
Less than boundary SOC, if so, initially entering constant-current charge process, constant-current charge is carried out to battery.
S302: during every sub- constant-current charge of constant-current charge process, based on battery in sub- constant-current charge process
Corresponding maximum allowable charging current charges the battery, wherein constant-current charge process is that the SOC of battery is increased by current SOC
Add to the charging process of boundary SOC.
It is noted that charging unit is completed during constant-current charge with being divided into multiple sub- constant-current charge processes
To the constant-current charge of battery, also, during every sub- constant-current charge, charging unit be with during the sub- constant-current charge
Corresponding maximum allowable charging current charges, then, and maximum allowable charging current corresponding to different sub- constant-current charge processes
It may be not identical.That is, during entire constant-current charge, charging unit, which may export different size of electric current, to be come pair
Battery charges.
In practical application, the size of current that charging unit can be output is that there are certain restrictions, therefore, in sub- constant-current charge
In the process, the practical size of current charged the battery of charging unit, the reality that usually can be provided according to charging unit
Maximum charging current maximum allowable charging current corresponding with the sub- constant-current charge process is determined.Specifically, if charging
The practical maximum charging current that device can be output is less than maximum allowable charging current corresponding to sub- constant-current charge process, then fills
Electric installation is charged the battery with the practical maximum charging current；And if the practical maximum charge electricity that charging unit can be output
Stream is more than or equal to maximum allowable charging current corresponding to sub- constant-current charge process, then charging unit is with maximum allowable charging
Current versus cell charges.
It is noted that every sub- constant-current charge process being directed in crossing current charging process, with the sub- constant-current charge
The corresponding maximum allowable charging current of process can be based on the first maximum allowable charging current and the second maximum allowable charging electricity
The average current of stream is determined, wherein the first maximum allowable charging current is battery when the sub- constant-current charge process starts
The corresponding maximum allowable charging current of SOC, and the second maximum allowable charging current is battery at the end of the sub- constant-current charge process
The corresponding maximum allowable charging current of SOC.
In a kind of illustrative embodiments for determining maximum allowable charging current, available sub- constant-current charge process is opened
Battery SOC corresponding at the end of the corresponding first maximum allowable charging current of battery SOC and sub- constant-current charge process when the beginning
Two maximum allowable charging currents, and then can calculate between the first maximum allowable charging current and the second permission charging current
Average current, and using the average current as battery the corresponding maximum allowable charging current in sub- constant-current charge process.
Certainly, only it is used as exemplary illustration, in practical application, be also possible to sub- constant-current charge mistake in above embodiment
The corresponding maximum allowable charging current of battery SOC of any one charging moment in journey, it is corresponding as the sub- constant-current charge process
Maximum allowable charging current, for example, the SOC that can be battery when starting sub- constant-current charge process corresponding first maximum permits
Perhaps charging current, as the corresponding maximum allowable charging current of the sub- constant-current charge process；Alternatively, can be sub- constant-current charge
The corresponding second maximum allowable charging current of the SOC of battery at the end of process, as the corresponding maximum of the sub- constant-current charge process
Allow charging current etc., there are a variety of in specific embodiment, details are not described herein.
S303: it is charged the battery with constant voltage, wherein constant-voltage charge process is to reach boundary from the SOC of battery
SOC starts until battery meets the charging process that charging finishes condition.
(electricity possessed by when as reached boundary SOC), battery polarization internal resistance after the electricity of battery reaches a certain level
It normally results in that empty voltage is higher, Full Power State can be charged to faster for the ease of the electricity of battery, constant pressure can be used
Mode charges the battery.
It is that constant-current charge first is carried out to battery, then when being charged the battery using charging unit in the present embodiment
Carrying out constant-voltage charge charging.And every sub- constant-current charge process during constant-current charge, be with the sub- constant-current charge mistake
The corresponding maximum allowable charging current of journey charges the battery.It is appreciated that in battery can be in tolerance range, the electricity of charging
Stream is bigger, then the electricity that battery is filled in same time period would generally be more.Therefore, it is used during every sub- constant-current charge
Corresponding maximum allowable charging current charges, and the charge efficiency of battery can be improved, and shortens the remaining charging of battery
Time.
In addition, the embodiment of the present application also provides a kind of estimation devices in remaining battery charging time.Show refering to Fig. 4, Fig. 4
Having gone out a kind of structural schematic diagram of the estimation device in remaining battery charging time, the device 400 in the embodiment of the present application includes:
SOC obtains module 401, for obtaining the current state-of-charge SOC of battery；
First computing module 402 is based on the electricity for being directed to every sub- constant-current charge process during constant-current charge
Pond corresponding maximum allowable charging current in the sub- constant-current charge process, calculates the battery in the sub- constant-current charge
Sub- constant-current charge time in the process, the constant-current charge process are that the SOC of the battery increases to boundary by the current SOC
The charging process of SOC；
Second computing module 403, for calculating the constant voltage charging time of the battery during constant-voltage charge, the constant pressure
Charging process is to finish filling for condition up to the battery meets charging since the SOC of the battery reaches the boundary SOC
Electric process；
Third computing module 404, it is total for calculating the constant voltage charging time and the time of all sub- constant-current charge times
With remaining charging time as the battery.
In some possible embodiments, described device 400 further include:
First electric current obtains module, for being directed to every sub- constant-current charge process during constant-current charge, described in acquisition
The corresponding first maximum allowable charging current of the SOC of sub- constant-current charge process battery when starting and the sub- constant current are filled
The corresponding second maximum allowable charging current of the SOC of the battery at the end of electric process；
4th computing module, for calculating the described first maximum allowable charging current and the second maximum allowable charging
The average current of electric current, and it is corresponding maximum fair in the sub- constant-current charge process using the average current as the battery
Perhaps charging current.
In some possible embodiments, first electric current obtains module, comprising:
First determination unit, for starting when institute according to the Current Temperatures and the sub- constant-current charge process of the battery
The SOC for stating battery determines the described first maximum allowable charging current；
Second determination unit, for institute at the end of according to the Current Temperatures of the battery and the sub- constant-current charge process
The SOC for stating battery determines the described second maximum allowable charging current.
In some possible embodiments, described device 400 further include:
Second electric current obtains module, for obtaining the practical maximum input charging current of the battery；
Then, first computing module 402, comprising:
Judging unit, for judging that the maximum allowable charging current inputs the big of charging current with the practical maximum
It is small；
First computing unit, if being less than the practical maximum input charging current for the maximum allowable charging current,
When then calculating charges to the battery with the maximum allowable charging current, the battery is in the sub- constant-current charge process
In the sub- constant-current charge time；
Second computing unit fills if being more than or equal to the practical maximum input for the maximum allowable charging current
Electric current, then when calculating charges to the battery with the practical maximum input charging current, the battery is in the son
The sub- constant-current charge time during constant-current charge.
In some possible embodiments, first computing module 402, comprising:
Third computing unit, it is permanent for calculating the SOC of the battery and the son when the sub- constant-current charge process starts
SOC difference at the end of current charge process between the SOC of the battery；
Capacity acquisition unit, for obtaining the total capacity of the battery under Current Temperatures；
4th computing unit, for according to the total capacity of the battery and institute under the SOC difference, the Current Temperatures
Maximum allowable charging current is stated, the sub- constant-current charge time is calculated.
In some possible embodiments, second computing module 403, comprising:
5th computing unit, for calculating the initial charge current and the default cut-off current during constant-voltage charge
Between target current difference；
Third determination unit, described in determining according to the corresponding relationship of current differential and charging time pre-established
The corresponding constant voltage charging time of target current difference.
As it can be seen that by calculating battery charging time needed for constant-current charge process and needed for constant-voltage charge process
In the charging time, available battery is being charged to the remaining charging time needed for Full Charge Capacity as current electric quantity, in this way, user is utilizing
During charging unit charges the battery, can know in real time currently also needs how long battery could be charged to the amount of working to the last minute shape
State.Moreover, the sub- constant-current charge time of each sub- constant-current charge process of difference, is all based on battery in respective sub- constant-current charge mistake
Corresponding maximum allowable charging current is determined in journey, and is not all to calculate based on a fixed current value
The sub- constant-current charge time of sub- constant-current charge process, so that the remaining charging time being calculated is more accurate.
In addition, the embodiment of the present application also provides a kind of battery chargers.The application is shown refering to Fig. 5, Fig. 5 to implement
A kind of structural schematic diagram of battery charger in example, the device 500 include:
Module 501 is obtained, for obtaining the current state-of-charge SOC of battery under current state；
Constant-current charge module 502, for being based on the battery during every sub- constant-current charge of constant-current charge process
Corresponding maximum allowable charging current charges to the battery in the sub- constant-current charge process, the constant-current charge mistake
Journey is that the SOC of the battery is increased to the charging process of boundary SOC by the current SOC；
Constant-voltage charge module 503, for being charged with constant voltage to the battery, wherein constant-voltage charge process is
Up to the battery meets the charging process that charging finishes condition since the SOC of the battery reaches the boundary SOC.
In some possible embodiments, the battery is corresponding in the sub- constant-current charge process maximum allowable fills
Electric current is that the average current based on the first maximum allowable charging current and the second maximum allowable charging current is determined,
The first maximum allowable charging current is that the SOC of battery when the sub- constant-current charge process starts is corresponding maximum allowable
Charging current, the second maximum allowable charging current are that the SOC of the battery at the end of the sub- constant-current charge process is corresponding
Maximum allowable charging current.
It is that constant-current charge first is carried out to battery, then when being charged the battery using charging unit in the present embodiment
Carrying out constant-voltage charge charging.And every sub- constant-current charge process during constant-current charge, be with the sub- constant-current charge mistake
The corresponding maximum allowable charging current of journey charges the battery.It is appreciated that in battery can be in tolerance range, the electricity of charging
Stream is bigger, then the electricity that battery is filled in same time period would generally be more.Therefore, it is used during every sub- constant-current charge
Corresponding maximum allowable charging current charges, and the charge efficiency of battery can be improved, and shortens the remaining charging of battery
Time.
" the first maximum allowable charging current ", " the first computing module ", " the first calculating list mentioned in the embodiment of the present application
" first " in the titles such as member " is used only to do name mark, does not represent first sequentially.The rule is equally applicable to
" second ", " third ", " the 4th " etc..
As seen through the above description of the embodiments, those skilled in the art can be understood that above-mentioned implementation
All or part of the steps in example method can add the mode of general hardware platform to realize by software.Based on this understanding,
The technical solution of the application can be embodied in the form of software products, which can store is situated between in storage
In matter, such as read-only memory (English: read-only memory, ROM)/RAM, magnetic disk, CD etc., including some instructions to
So that a computer equipment (can be the network communication equipments such as personal computer, server, or router) executes
Method described in certain parts of each embodiment of the application or embodiment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for method reality
For applying example and apparatus embodiments, since it is substantially similar to system embodiment, so describe fairly simple, related place ginseng
See the part explanation of system embodiment.Equipment and system embodiment described above is only schematical, wherein making
It may or may not be physically separated for the module of separate part description, the component shown as module can be
Or it may not be physical module, it can it is in one place, or may be distributed over multiple network units.It can be with
Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment according to the actual needs.The common skill in this field
Art personnel can understand and implement without creative efforts.
The above is only the illustrative embodiment of the application, is not intended to limit the protection scope of the application.
Claims (10)
1. a kind of evaluation method in remaining battery charging time, which is characterized in that the described method includes:
Obtain the current state-of-charge SOC of battery；
It is directed to every sub- constant-current charge process during constant-current charge, based on the battery in the sub- constant-current charge process
Corresponding maximum allowable charging current calculates sub- constant-current charge time of battery during the sub- constant-current charge,
The constant-current charge process is that the SOC of the battery is increased to the charging process of boundary SOC by the current SOC；
The constant voltage charging time of the battery during calculating constant-voltage charge, the constant-voltage charge process are from the battery
SOC reaches the boundary SOC and starts until the battery meets the charging process that charging finishes condition；
The temporal summation for calculating the constant voltage charging time Yu all sub- constant-current charge times, the residue charging as the battery
Time.
2. the method according to claim 1, wherein the method also includes:
It is directed to every sub- constant-current charge process during constant-current charge, obtains electricity when the sub- constant-current charge process starts
SOC pairs of the battery at the end of the corresponding first maximum allowable charging current of the SOC in pond and the sub- constant-current charge process
The maximum allowable charging current of second answered；
Calculate the average current of the described first maximum allowable charging current and the second maximum allowable charging current, and by institute
State average current as the battery the corresponding maximum allowable charging current in the sub- constant-current charge process.
3. according to the method described in claim 2, it is characterized in that, described in when the acquisition sub- constant-current charge process starts
The SOC of the battery at the end of the corresponding first maximum allowable charging current of the SOC of battery and the sub- constant-current charge process
Corresponding second maximum allowable charging current, comprising:
The SOC of battery when being started according to the Current Temperatures of the battery and the sub- constant-current charge process, determine described in
First maximum allowable charging current；
The SOC of the battery at the end of according to the Current Temperatures of the battery and the sub- constant-current charge process, determine described in
Second maximum allowable charging current.
4. according to the method described in claim 2, it is characterized in that, the method also includes:
Obtain the practical maximum input charging current of the battery；
Then, described to be based on the battery corresponding maximum allowable charging current in the sub- constant-current charge process, calculate institute
State sub- constant-current charge time of battery during the sub- constant-current charge, comprising:
Judge the size of the maximum allowable charging current and the practical maximum input charging current；
If the maximum allowable charging current is less than the practical maximum input charging current, calculates and maximum allowable filled with described
When electric current charges to the battery, sub- constant-current charge time of battery during the sub- constant-current charge；
If the maximum allowable charging current is more than or equal to the practical maximum input charging current, calculate with the reality
When border maximum input charging current charges to the battery, sub- constant current of battery during the sub- constant-current charge
Charging time.
5. the method according to claim 1, wherein described be based on the corresponding maximum of the sub- constant-current charge process
Allow charging current, calculate sub- constant-current charge time of battery during the sub- constant-current charge, comprising:
Calculate when the sub- constant-current charge process starts the electricity at the end of the SOC of the battery and the sub- constant-current charge process
SOC difference between the SOC in pond；
Obtain the total capacity of the battery under Current Temperatures；
According to the total capacity of the battery under the SOC difference, the Current Temperatures and the maximum allowable charging current, meter
Calculate the sub- constant-current charge time.
6. the method according to claim 1, wherein it is described calculate constant-voltage charge during the battery constant pressure
Charging time, comprising:
Target current difference during calculating constant-voltage charge between the initial charge current and the default cut-off current；
According to the corresponding relationship of the current differential and charging time that pre-establish, the corresponding constant pressure of the target current difference is determined
Charging time.
7. a kind of method for charging batteries, which is characterized in that the described method includes:
Obtain the current state-of-charge SOC of battery under current state；
It is right in the sub- constant-current charge process based on the battery during every sub- constant-current charge of constant-current charge process
The maximum allowable charging current answered charges to the battery, and the constant-current charge process is the SOC of the battery by described
Current SOC increases to the charging process of boundary SOC；
It is charged with constant voltage to the battery, wherein constant-voltage charge process is to reach described point from the SOC of the battery
Boundary SOC starts until the battery meets the charging process that charging finishes condition.
8. the method according to the description of claim 7 is characterized in that the battery is corresponding in the sub- constant-current charge process
Maximum allowable charging current is the average current based on the first maximum allowable charging current and the second maximum allowable charging current
It is determined, the first maximum allowable charging current is SOC pair of battery when the sub- constant-current charge process starts
The maximum allowable charging current answered, the second maximum allowable charging current are the electricity at the end of the sub- constant-current charge process
The corresponding maximum allowable charging current of the SOC in pond.
9. a kind of estimation device in remaining battery charging time, which is characterized in that described device includes:
SOC obtains module, for obtaining the current state-of-charge SOC of battery；
First computing module, for being directed to every sub- constant-current charge process during constant-current charge, based on the battery in institute
Corresponding maximum allowable charging current in sub- constant-current charge process is stated, calculates the battery during the sub- constant-current charge
The sub- constant-current charge time, the constant-current charge process is that the SOC of the battery increases to boundary SOC by the current SOC
Charging process；
Second computing module, for calculating the constant voltage charging time of the battery during constant-voltage charge, the constant-voltage charge mistake
The SOC of battery described in Cheng Weicong reaches the boundary SOC and starts until the battery meets the charging process that charging finishes condition；
Third computing module, for calculating the temporal summation of the constant voltage charging time Yu all sub- constant-current charge times, as
The remaining charging time of the battery.
10. a kind of battery charger, which is characterized in that described device includes:
Module is obtained, for obtaining the current state-of-charge SOC of battery under current state；
Constant-current charge module, for being based on the battery described during every sub- constant-current charge of constant-current charge process
Corresponding maximum allowable charging current charges to the battery in sub- constant-current charge process, and the constant-current charge process is institute
The SOC for stating battery is increased to the charging process of boundary SOC by the current SOC；
Constant-voltage charge module, for being charged with constant voltage to the battery, wherein constant-voltage charge process is from the electricity
The SOC in pond reaches the boundary SOC and starts until the battery meets the charging process that charging finishes condition.
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| CN110426642A (en) * | 2019-08-07 | 2019-11-08 | 歌尔科技有限公司 | Electricity acquisition methods, device, equipment and the storage medium of a kind of electronic equipment under ageing state |
| CN110518302A (en) * | 2019-08-30 | 2019-11-29 | 蜂巢能源科技有限公司 | Battery management system and its determination method and apparatus in remaining battery charging time |
| CN110909443A (en) * | 2019-10-12 | 2020-03-24 | 北京航空航天大学 | High-precision battery pack charging remaining time estimation method and system |
| CN111422092A (en) * | 2020-04-17 | 2020-07-17 | 肇庆小鹏汽车有限公司 | Charging remaining time calculation method and device and storage medium |
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| CN112666463A (en) * | 2020-12-31 | 2021-04-16 | 蜂巢能源科技有限公司 | Battery charging remaining time correction display method, correction device and storage device |
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| CN112803547B (en) * | 2021-02-23 | 2024-01-23 | 维沃移动通信有限公司 | Charging method, charging device, electronic equipment and storage medium |
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