CN107102271A - Estimation method, device and system for peak power of battery pack - Google Patents
Estimation method, device and system for peak power of battery pack Download PDFInfo
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- CN107102271A CN107102271A CN201710380983.XA CN201710380983A CN107102271A CN 107102271 A CN107102271 A CN 107102271A CN 201710380983 A CN201710380983 A CN 201710380983A CN 107102271 A CN107102271 A CN 107102271A
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- value
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- electric discharge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Abstract
The invention discloses a method, a device and a system for estimating peak power of a battery pack. The method comprises the following steps: obtaining a discharging power limiting value and a charging power limiting value of the battery pack according to the charge state of a battery cell in the battery pack and the temperature of the battery pack; acquiring a minimum voltage value and a maximum voltage value of a battery cell in a battery pack, and determining a discharging peak power limiting coefficient and a charging peak power limiting coefficient based on a preset voltage limiting condition, the minimum voltage value and the maximum voltage value; and calculating the discharging peak power of the battery pack and the charging peak power of the battery pack based on the discharging power limit value, the charging power limit value, the discharging peak power limit coefficient and the charging peak power limit coefficient. According to the method for estimating the peak power of the battery pack provided by the embodiment of the invention, the peak power of the battery cell in the battery pack can be adjusted through the voltage of the battery cell, so that the risk of undervoltage or overvoltage when the peak power is discharged or charged is avoided.
Description
Technical field
The present invention relates to evaluation method, the device and system of cell art, more particularly to battery pack peak power.
Background technology
The prediction of battery core peak power is the critical function of cell management system of electric automobile.Predicted by battery core peak power
Power battery pack charge-discharge electric power limit energy under different state-of-charges (State of Charge, abbreviation SoC) can be assessed
Power, the relation between optimal match battery group and vehicles dynamic performance, to meet acceleration and the grade climbing performance of electric automobile, most
The regenerating braking energy that motor is played in big degree reclaims function.Also, battery core peak power is estimated for reasonable employment battery,
Avoid the occurrence of to overcharge or cross and put phenomenon, extension battery pack service life has important theory significance and practical value.
It is typically the current state and current battery core according to battery core in the existing evaluation method to battery core peak power
Parameter estimation battery core peak power.But, battery pack from it is static to electric discharge during, during initial battery pack inactive state
Polarizing voltage is 0, with the increase and the growth of discharge time of discharge current, and the polarizing voltage of battery core gradually increases in battery pack
Greatly, so obtained battery core peak power of estimation is by much larger than the practical capacity of battery core, if discharged with the peak power
Or charging can have under-voltage or over-pressed risk.
The content of the invention
The embodiment of the present invention provides the evaluation method of battery pack peak power, device and system, can more accurately estimate
Battery core peak power, it is to avoid under-voltage or over-pressed risk occur when inaccurate to peak power estimation.
One side according to embodiments of the present invention there is provided a kind of evaluation method of battery pack peak power, including：According to electricity
The temperature of the state-of-charge of battery core and battery pack in the group of pond, obtains discharge power limits value and the charge power limitation of battery pack
Value；Obtain the minimum amount of voltage that and maximum voltage value of battery core in battery pack, the minimum based on default voltage restrictive condition, battery core
Magnitude of voltage and maximum voltage value, it is determined that electric discharge peak value power limit coefficient and charging peaks power limit coefficient；Based on electric discharge work(
Rate limits value, charge power limits value, electric discharge peak value power limit coefficient and charging peaks power limit coefficient, calculate battery pack
Electric discharge peak power and battery pack charging peaks power.
Another aspect according to embodiments of the present invention there is provided a kind of estimation device of battery pack peak power, including：Peak value
Power limit acquisition module, for the state-of-charge and the temperature of battery pack according to battery core in battery pack, obtains battery pack
Discharge power limits value and charge power limits value；Peak power limit coefficient acquisition module, for obtaining battery core in battery pack
Minimum amount of voltage that and maximum voltage value, minimum amount of voltage that and maximum voltage value based on default voltage restrictive condition, battery core,
It is determined that electric discharge peak value power limit coefficient and charging peaks power limit coefficient；Peak power calculates module, based on discharge power
Limits value, charge power limits value, electric discharge peak value power limit coefficient and charging peaks power limit coefficient, calculate battery pack
The charging peaks power of peak power of discharging and battery pack.
Another further aspect according to embodiments of the present invention there is provided a kind of estimating system of battery pack peak power, including：Storage
Device, processor, communication interface and bus；Memory, processor and communication interface are connected by bus and completed mutual lead to
Letter；Memory is used for store program codes；The executable program code that processor is stored by reading in memory come run with
The corresponding program of executable program code, for performing a kind of evaluation method of battery pack peak power, wherein, battery pack peak
The evaluation method of value power includes：According to the state-of-charge of battery core in battery pack and the temperature of battery pack, putting for battery pack is obtained
Electrical power limits value and charge power limits value；The minimum amount of voltage that and maximum voltage value of battery core in battery pack are obtained, based on pre-
If voltage restrictive condition, the minimum amount of voltage that and maximum voltage value of battery core, it is determined that electric discharge peak value power limit coefficient and charging
Peak power limit coefficient；Based on discharge power limits value, charge power limits value, electric discharge peak value power limit coefficient and charging
Peak power limit coefficient, calculates the electric discharge peak power of battery pack and the charging peaks power of battery pack.
The evaluation method of battery pack peak power according to embodiments of the present invention, device and system, according in battery pack
The state-of-charge and state of temperature of battery core obtain the discharge power limits value and charge power limits value of current battery, and are based on
Battery core minimum voltage is defined to discharge power limits value, and charge power limits value is carried out based on battery core maximum voltage
Limit, it is to avoid battery core Parameters variation estimates the under-voltage or over-pressed existing of inaccurate appearance in the battery pack caused due to discharging history
As.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Accompanying drawing is briefly described, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the flow chart for the evaluation method for showing battery pack peak power according to an embodiment of the invention；
Fig. 2 is to obtain discharge power limits value and charge power limits value according to battery pack state-of-charge and temperature in Fig. 1
Detailed flow chart；
Fig. 3 is the detailed flow of determination electric discharge peak value power limit coefficient and charging peaks power limit coefficient in Fig. 1
Figure；
Fig. 4 is the structural representation for the estimation device for showing battery pack peak power according to an embodiment of the invention；
Fig. 5 is the specific structural representation of peak power limits value acquisition module in Fig. 4；
Fig. 6 is the specific structural representation of peak power limit coefficient acquisition module in Fig. 4；
Fig. 7 is the evaluation method and the electricity of device for illustrating the ability to realize battery pack peak power according to embodiments of the present invention
The structure chart of the exemplary hardware architecture of the estimating system of pond group peak power.
Embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order that the mesh of the present invention
, technical scheme and advantage be more clearly understood, below in conjunction with drawings and Examples, the present invention is further retouched in detail
State.It should be understood that specific embodiment described herein is only configured to explain the present invention, and it is not adapted to limit the present invention.
To those skilled in the art, the present invention can be real in the case of some details in not needing these details
Apply.The description to embodiment is used for the purpose of by showing that the example of the present invention is better understood to provide to the present invention below.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence " including ... ", it is not excluded that including
Also there is other identical element in process, method, article or the equipment of the key element.
, it is necessary in real time in the application scenarios that motor vehicle driven by mixed power or pure electric vehicle etc. have compared with the battery of high-energy-density
Estimate the peak power of battery, assess the limit capacity and discharge peak of charging peaks power of the battery pack under different battery core states
It is worth the limit capacity of power, the relation between Optimum Matching power battery pack and vehicles dynamic performance, to meet the acceleration of vehicle
And grade climbing performance, the Brake energy recovery ability of maximum performance motor.The reasonable prediction of battery peak power is carried out for reasonable
Use battery, it is to avoid battery, which occurs overcharging or crossed, puts phenomenon, and extension battery is significant, is battery management system
The important component of system.
In embodiments of the present invention, peak power reflects the limit charging and discharging capabilities of battery, and the peak power to battery is estimated
Calculation needs to consider the minimum voltage and maximum voltage of battery core in battery pack Soc, battery pack temperature, battery pack.
In order to be better understood from the present invention, below in conjunction with accompanying drawing, battery pack according to embodiments of the present invention is described in detail
The evaluation method of peak power, device and system.It should be noted that these embodiments are not for limiting model disclosed by the invention
Enclose.
Fig. 1 is the flow chart for the evaluation method for showing battery pack peak power according to embodiments of the present invention.Such as Fig. 1 institutes
Show, the evaluation method 100 of the battery pack peak power in the present embodiment comprises the following steps：
Step S110, according to the state-of-charge of battery core in battery pack and the temperature of battery pack, obtains the electric discharge work(of battery pack
Rate limits value and charge power limits value.
Step S120, obtains the minimum amount of voltage that and maximum voltage value of battery core in battery pack, based on the limitation of default voltage
The maximum voltage value of condition, the minimum amount of voltage that of battery core and battery core, it is determined that electric discharge peak value power limit coefficient and charging peaks work(
Rate limit coefficient.
Step S130, based on discharge power limits value, charge power limits value, electric discharge peak value power limit coefficient and charging
Peak power limit coefficient, calculates the electric discharge peak power of battery pack and the charging peaks power of battery pack.
The evaluation method of battery pack peak power according to embodiments of the present invention, passes through the minimum voltage of battery core in battery pack
Value and maximum voltage value, the discharge power limits value and charge power limits value obtained to preresearch estimates is defined, to battery
The estimation of group peak power is more accurate, it is to avoid battery core is unreasonable caused by peak power is estimated uses.
Fig. 2 is to show to obtain discharge power limits value according to battery pack state-of-charge and battery pack temperature in Fig. 1 and fill
The detailed flow chart of electrical power limits value, step identical or equivalent with Fig. 1 Fig. 2 uses identical label.As shown in Fig. 2
The evaluation method of battery pack peak power according to embodiments of the present invention, step S110 specifically may comprise steps of：
Step S111, obtains the minimum battery core SOC of battery core and maximum battery core SOC in battery pack, and
It regard the temperature of battery pack as battery core temperature in battery pack.
Step S112, using minimum battery core SOC and battery core temperature, inquire about build in advance with peak value discharge and recharge
The mapping table of power, obtains the discharge power limits value of battery pack.
Step S113, using maximum battery core SOC and battery core temperature, inquires about mapping table, obtains battery pack
Charge power limits value.
Due to the limitation of battery process level, generally there is certain deviation in battery pack between battery core.Battery core is being used
During influence with the factor such as the increase of charge and discharge cycles number of times, electric core aging and temperature environment, cause in same battery pack
The state-of-charge SoC of battery core is inconsistent.SoC is also referred to as " dump energy ", directly reflects the remaining active volume of battery pack, battery
The SoC of battery core in group, determines the maximum charge-discharge electric power of battery pack to a certain extent.Also, battery core is not in battery pack
Charge-discharge electric power under synthermal equally exists otherness.
In above-mentioned steps S111, the surface temperature of battery pack can be regard as the battery core temperature in battery pack.
In step S112 and S113, the mapping table with peak value charge-discharge electric power, reflection is battery core SoC and battery core
Corresponding relation between two parameters of temperature and the peak value charge-discharge electric power of battery core.
In certain embodiments, can be by being obtained in experiment in different test temperature environment under each state-of-charge of battery core
Peak value charge power and crest discharge power, build the peak value discharge and recharge of battery core SoC and the two parameters of battery core temperature and battery core
The mapping table of power.
In embodiments of the present invention, according to the minimum battery core SoC and battery core temperature of battery core in battery pack, it will be filled with peak value
Obtained crest discharge power is inquired about in the mapping table of discharge power, the discharge power limits value of battery pack is used as；According to
The maximum battery core SoC and battery core temperature of battery core in battery pack, by with being inquired about in the mapping table of peak value charge-discharge electric power
The peak value charge power arrived, is used as the charge power limits value of battery pack.
Fig. 3 be show in Fig. 1 determine electric discharge peak value power limit coefficient and charging peaks power limit coefficient it is detailed
Flow chart, step identical or equivalent with Fig. 1 Fig. 3 uses identical label.As shown in figure 3, according to embodiments of the present invention
The evaluation method of battery pack peak power, step S120 specifically may comprise steps of：
Step S121, in real time obtain battery power discharge when battery core minimum amount of voltage that, if the minimum amount of voltage that be less than etc.
The discharge period specified is reached in specified electric discharge limitation voltage and duration, will be in electric discharge limit coefficient empirical value
Minimum value is used as the electric discharge peak value power limit coefficient.
Step S122, in real time obtain battery pack charging when battery core maximum voltage value, if the maximum voltage value be more than etc.
The duration of charge specified is reached in specified charging limitation voltage and duration, will be in charging limit coefficient empirical value
Minimum value is used as the charging peaks power limit coefficient.
As an alternative embodiment, above-mentioned steps S121 can specifically include：
Step S121-01, the minimum amount of voltage that of battery core is less than or equal to the first electric discharge limitation voltage and the duration reaches the
One discharge period, obtain the first electric discharge limit coefficient empirical value.
Step S121-02, the electric discharge limitation empirical value for setting electric discharge peak value power limit coefficient is the first electric discharge limitation system
Number empirical value.
As another alternative embodiment, above-mentioned steps S121 can specifically include：
Step S121-11, the minimum amount of voltage that of battery core is less than or equal to the first electric discharge limitation voltage and the duration reaches the
One discharge period, obtain the first electric discharge limit coefficient empirical value.
Step S121-12, the minimum amount of voltage that of battery core is less than or equal to the second electric discharge limitation voltage and the duration reaches the
Two discharge periods, the second electric discharge limit coefficient empirical value is obtained, wherein, the second electric discharge limitation voltage is less than the first electric discharge and limited
Voltage processed.
Step S121-13, the electric discharge limitation empirical value for setting electric discharge peak value power limit coefficient is the first electric discharge limitation system
Minimum value in number empirical value and the second electric discharge limit coefficient empirical value.
As another alternative embodiment, above-mentioned steps S121 can specifically include：
Step S121-21, the minimum amount of voltage that of battery core is less than or equal to the first electric discharge limitation voltage and the duration reaches the
One discharge period, obtain the first electric discharge limit coefficient empirical value.
Step S121-22, the minimum amount of voltage that of battery core is less than or equal to the second electric discharge limitation voltage and the duration reaches the
Two discharge periods, the second electric discharge limit coefficient empirical value is obtained, wherein, the second electric discharge limitation voltage is less than the first electric discharge and limited
Voltage processed.
Step S121-23, the minimum amount of voltage that of battery core is less than or equal to the 3rd electric discharge limitation voltage and the duration reaches the
Three discharge periods, the 3rd electric discharge limit coefficient empirical value is obtained, wherein, the 3rd electric discharge limitation voltage is less than the second electric discharge and limited
Voltage processed.
Step S121-24, the electric discharge limitation empirical value for setting electric discharge peak value power limit coefficient is the first electric discharge limitation system
Minimum value in number empirical value, the second electric discharge limit coefficient empirical value and the 3rd electric discharge limit coefficient empirical value.
In certain embodiments, the first discharge period, the second discharge period and the 3rd discharge period can
To set according to actual needs, the time value of the first discharge period, the time value of the second discharge period and the 3rd are put
The time value of electric duration can be with identical, can also be different.
In certain embodiments, the first electric discharge limit coefficient empirical value, the second electric discharge limit coefficient empirical value and the 3rd are put
Electric limit coefficient empirical value can be the empirical value set in advance obtained according to experimental data or practical data.
In the above-described embodiments, effecting prevention property ladder power limit during battery power discharge.
As an example, the minimum amount of voltage that of battery core is less than or equal to the first electric discharge limitation voltage and the duration reaches the
During one discharge period, battery pack is one-level under-voltage condition；The minimum amount of voltage that be less than or equal to second electric discharge limitation voltage and
When duration reached for the second discharge period, battery pack is two grades of under-voltage conditions；The minimum amount of voltage that is less than or equal to the 3rd
The electric discharge limitation voltage and duration is when reaching for three discharge periods, battery pack is three-level under-voltage condition.
In this example, the minimum amount of voltage that of battery core is less than or equal to the electric discharge limitation voltage specified and the duration reaches finger
During the fixed discharge period, by the get first electric discharge limit coefficient empirical value, the second electric discharge limit coefficient empirical value and
Minimum value in 3rd electric discharge limitation system empirical value is used as electric discharge peak value power limit coefficient.
In certain embodiments, the second electric discharge limit coefficient empirical value is less than the first electric discharge limit coefficient empirical value, the 3rd
Limit coefficient of discharging empirical value is less than the second electric discharge limit coefficient empirical value.
As alternative embodiment, above-mentioned steps S122 can include：
Step S122-01, if the maximum voltage value of battery core is more than or equal to the first charging limitation voltage and the duration reaches
To the first duration of charge, the first charging limit coefficient empirical value is obtained.
Step S122-02, it is the first charging limit coefficient empirical value to set charging peaks power limit coefficient.
As alternative embodiment, above-mentioned steps S122 can include：
Step S122-11, if the maximum voltage value of battery core is more than or equal to the first charging limitation voltage and the duration reaches
To the first duration of charge, the first charging limit coefficient empirical value is obtained.
Step S122-12, if the maximum voltage value of battery core is more than or equal to the second charging limitation voltage and the duration reaches
To the second duration of charge, the second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage fills more than first
Electricity limitation voltage.
Step S122-13, it is that the first charging limit coefficient empirical value and second fills to set charging peaks power limit coefficient
Minimum value in electric limit coefficient empirical value.
As alternative embodiment, above-mentioned steps S122 can include：
Step S122-21, if the maximum voltage value of battery core is more than or equal to the first charging limitation voltage and the duration reaches
To the first duration of charge, the first charging limit coefficient empirical value is obtained.
Step S122-22, if the maximum voltage value of battery core is more than or equal to the second charging limitation voltage and the duration reaches
To the second duration of charge, the second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage fills more than first
Electricity limitation voltage.
Step S122-23, if the maximum voltage of battery core is more than or equal to the 3rd charging limitation voltage and the duration reaches
3rd duration of charge, obtains the 3rd charging limit coefficient empirical value, wherein, the 3rd charging limitation voltage is more than the second charging
Limit voltage.
Step S122-24, it is the first charging limit coefficient empirical value, the second charging to set charging peaks power limit coefficient
Minimum value in limit coefficient empirical value and the 3rd charging limit coefficient empirical value.
In certain embodiments, the first duration of charge, the second duration of charge and the 3rd duration of charge can
To set according to actual needs, the time value of the first duration of charge, the time value of the second duration of charge and the 3rd are filled
The time value of electric duration can be with identical, can also be different.
In certain embodiments, the first charging limit coefficient empirical value, the second charging limit coefficient empirical value and the 3rd fill
Electric limit coefficient empirical value can be the empirical value set in advance obtained according to experimental data or practical data.
In the above-described embodiments, effecting prevention property ladder power limit in battery pack charging process.
As an example, the maximum voltage value of battery core is more than or equal to the first charging limitation voltage and the duration reaches the
During one duration of charge, battery pack is one-level overvoltage condition；The maximum voltage value of battery core is more than or equal to the second charging limitation electricity
The pressure and duration is when reaching the second duration of charge, battery pack is two grades of overvoltage conditions；The maximum voltage value of battery core is more than
Equal to the 3rd charging limitation voltage and the duration reach three durations of charge when, battery pack be three-level overvoltage condition.
In this example, by the get first charging limit coefficient empirical value, the second charging limit coefficient empirical value and
Minimum value in 3rd charging limit coefficient empirical value is used as charging peaks power limit coefficient.
In certain embodiments, the second electric discharge limit coefficient empirical value is less than the first electric discharge limit coefficient empirical value, the 3rd
Limit coefficient of discharging empirical value is less than the second electric discharge limit coefficient empirical value.
In further embodiments, step S120 specifically may comprise steps of：
When the minimum amount of voltage that of battery core is more than the electric discharge limitation voltage specified or duration lasting less than the electric discharge specified
Between, electric discharge peak value power limit coefficient is 1.
When the maximum voltage value of battery core is less than the charging limitation voltage specified or duration lasting less than the charging specified
Between, charging peaks power limit coefficient is 1.
In step s 130, by discharge power limits value and electric discharge peak value power limit multiplication, calculating obtains battery
The electric discharge peak power of group；By charge power limits value and charging peaks power limit multiplication, calculating obtains battery pack
Charging peaks power.
According to the evaluation method of the battery pack peak power of the embodiments of the present invention, electrokinetic cell system can be accurately estimated
The peak power of system, has important directive significance for the use lithium ion battery held water, can avoid due to improper
Use caused shorter battery life and potential safety problem.
Below in conjunction with the accompanying drawings, the estimation device of battery pack peak power according to embodiments of the present invention is discussed in detail.
Fig. 4 shows the structural representation of the estimation device of the battery pack peak power provided according to one embodiment of the invention
Figure.As shown in figure 4, the estimation device 400 of battery pack peak power includes：
Peak power limits value acquisition module 410, for the state-of-charge and the temperature of battery pack according to battery core in battery pack
Degree, obtains the discharge power limits value and charge power limits value of battery pack；
Peak power limit coefficient acquisition module 420, for obtaining the minimum amount of voltage that of battery core and maximum electricity in battery pack
Pressure value, based on default voltage restrictive condition, minimum amount of voltage that and maximum voltage value, it is determined that electric discharge peak value power limit coefficient and
Charging peaks power limit coefficient；
Peak power calculates module 430, based on discharge power limits value, charge power limits value, electric discharge peak power limit
Coefficient and charging peaks power limit coefficient processed, calculates the electric discharge peak power of battery pack and the charging peaks power of battery pack.
The estimation device of battery pack peak power provided in an embodiment of the present invention, according to battery core SoC and battery core in battery pack
Temperature obtains battery pack peak power limits value, and obtained peak power limits value is limited by the magnitude of voltage of battery core
It is fixed, according to embodiments of the present invention, the estimation of battery pack peak power can be made more accurate, it is to avoid because peak power estimation causes
Battery core unreasonable use.
Fig. 5 is the specific structural representation for showing peak power limits value acquisition module in Fig. 4.Fig. 5 is identical with Fig. 4
Or equivalent structure uses identical label.
In certain embodiments, as shown in figure 5, peak power limits value acquisition module 410 can include：
State-of-charge acquiring unit 411, for obtaining the minimum battery core SOC of battery core and maximum electricity in battery pack
Core SOC, and it regard the temperature of battery pack as battery core temperature in battery pack.
Discharge power limits value query unit 412, for using minimum battery core SOC and battery core temperature, inquiry to be pre-
The mapping table with peak value charge-discharge electric power first built, obtains the discharge power limits value of battery pack.
Charge power limits value query unit 413, for utilizing maximum battery core SOC and battery core temperature, inquiry pair
Relation table is answered, the charge power limits value of battery pack is obtained.
In this embodiment, according to the minimum SoC values and battery core temperature of battery core in battery pack, built in advance by inquiry
The discharge power limits value of battery pack is determined with the mapping table of peak value charge-discharge electric power；According to the maximum of battery core in battery pack
SoC values and battery core temperature being built to determine filling for battery pack with peak value charge-discharge electric power mapping table in advance by inquiry
Electrical power limits value.
Fig. 6 is the specific structural representation for showing peak power limit coefficient acquisition module in Fig. 4.Fig. 6 and phase in Fig. 4
Same or equivalent structure uses identical label.
As shown in fig. 6, in certain embodiments, peak power limit coefficient acquisition module 420 includes：
Electric discharge peak value power limit coefficient acquiring unit 421, the minimum of battery core during for obtaining battery power discharge in real time
Magnitude of voltage, if the minimum amount of voltage that is less than or equal to the electric discharge limitation voltage specified and the duration reaches that the electric discharge specified continues
Time, it regard the minimum value in the limit coefficient empirical value that discharges as the electric discharge peak value power limit coefficient.
Charging peaks power limit coefficient acquiring unit 422, the maximum electricity of battery core during for obtaining battery pack charging in real time
Pressure value, if the maximum voltage value is more than or equal to the charging limitation voltage specified and when the duration reaches that the charging specified continues
Between, it regard the minimum value in the limit coefficient empirical value that charges as the charging peaks power limit coefficient.
As alternative embodiment, electric discharge peak value power limit coefficient acquiring unit 421 specifically can be used for：
The minimum amount of voltage that of battery core be less than or equal to first electric discharge limitation voltage and the duration reach the first electric discharge continue when
Between, obtain the first electric discharge limit coefficient empirical value.
The minimum amount of voltage that of battery core be less than or equal to second electric discharge limitation voltage and the duration reach the second electric discharge continue when
Between, the second electric discharge limit coefficient empirical value is obtained, wherein, the second electric discharge limitation voltage is less than the first electric discharge and limits voltage.
It is the first electric discharge limit coefficient empirical value to set the electric discharge limit coefficient empirical value of electric discharge peak value power limit coefficient
With the minimum value in the second electric discharge limit coefficient empirical value.
As alternative embodiment, electric discharge peak value power limit coefficient acquiring unit 421 specifically can be used for：
The minimum amount of voltage that of battery core be less than or equal to first electric discharge limitation voltage and the duration reach the first electric discharge continue when
Between, obtain the first electric discharge limit coefficient empirical value；
The minimum amount of voltage that of battery core be less than or equal to second electric discharge limitation voltage and the duration reach the second electric discharge continue when
Between, the second electric discharge limit coefficient empirical value is obtained, wherein, the second electric discharge limitation voltage is less than the first electric discharge and limits voltage；
It is the first electric discharge limit coefficient empirical value to set the electric discharge limit coefficient empirical value of electric discharge peak value power limit coefficient
With the minimum value in the second electric discharge limit coefficient empirical value.
As alternative embodiment, electric discharge peak value power limit coefficient acquiring unit 421 specifically can be used for：
The minimum amount of voltage that of battery core be less than or equal to first electric discharge limitation voltage and the duration reach the first electric discharge continue when
Between, obtain the first electric discharge limit coefficient empirical value；
The minimum amount of voltage that of battery core be less than or equal to second electric discharge limitation voltage and the duration reach the second electric discharge continue when
Between, the second electric discharge limit coefficient empirical value is obtained, wherein, the second electric discharge limitation voltage is less than the first electric discharge and limits voltage；
The minimum amount of voltage that of battery core be less than or equal to the 3rd electric discharge limitation voltage and the duration reach the 3rd electric discharge continue when
Between, the 3rd electric discharge limit coefficient empirical value is obtained, wherein, the 3rd electric discharge limitation voltage is less than the second electric discharge and limits voltage；
It is the first electric discharge limit coefficient empirical value, the second electric discharge limit coefficient experience to set electric discharge peak value power limit coefficient
Minimum value in value and the 3rd electric discharge limit coefficient empirical value.
As alternative embodiment, charging peaks power limit coefficient acquiring unit 422 specifically for：
If the maximum voltage value of battery core is more than or equal to the first charging limitation voltage and the duration reaches that the first charging is held
The continuous time, obtain the first charging limit coefficient empirical value；
If the maximum voltage value of battery core is more than or equal to the second charging limitation voltage and the duration reaches that the second charging is held
The continuous time, the second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage is more than the first charging and limits voltage；
It is the first charging limit coefficient empirical value and the second charging limit coefficient warp to set charging peaks power limit coefficient
The minimum value tested in value.
As alternative embodiment, charging peaks power limit coefficient acquiring unit 422 specifically for：
If the maximum voltage value of battery core is more than or equal to the first charging limitation voltage and the duration reaches that the first charging is held
The continuous time, obtain the first charging limit coefficient empirical value；
If the maximum voltage value of battery core is more than or equal to the second charging limitation voltage and the duration reaches that the second charging is held
The continuous time, the second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage is more than the first charging and limits voltage；
If the maximum voltage value of battery core is more than or equal to the 3rd charging limitation voltage and the duration reaches that the 3rd charging is held
The continuous time, the 3rd charging limit coefficient empirical value is obtained, wherein, the 3rd charging limitation voltage is more than the second charging and limits voltage；
It is the first charging limit coefficient empirical value, the second charging limit coefficient experience to set charging peaks power limit coefficient
Minimum value in value and the 3rd charging limit coefficient empirical value.
In certain embodiments, charging peaks power limit coefficient acquiring unit 421, which is additionally operable to obtain battery pack in real time, puts
The minimum amount of voltage that of battery core when electric, the minimum amount of voltage that is more than the electric discharge limitation voltage specified or the duration is less than what is specified
Discharge period, electric discharge peak value power limit coefficient is 1；
Charging peaks power limit coefficient acquiring unit 422 is specifically additionally operable to obtain battery core when battery pack charges in real time
Maximum voltage, the maximum voltage is less than the charging limitation voltage specified or the duration is less than the duration of charge specified, and fills
Electric peak power limit coefficient is 1.
According to the estimation device of the battery pack peak power of the embodiments of the present invention, the minimum voltage based on battery core is to putting
Electrical power limits value is defined, and the maximum voltage based on battery core is defined to charge power limits value, it is to avoid due to
Battery core Parameters variation estimates the under-voltage or over-pressed phenomenon of inaccurate appearance in the battery pack caused of discharging history, it is to avoid due to not
It is proper to use caused shorter battery life and potential safety problem.
The other details of the estimation device of battery pack peak power according to embodiments of the present invention above in association with Fig. 1 with extremely scheming
The evaluation method of the battery pack peak power according to embodiments of the present invention of 3 descriptions is similar, will not be repeated here.
Can with reference to the evaluation method and device of Fig. 1 to Fig. 6 battery pack peak powers according to embodiments of the present invention described
With by removably or the estimating system of battery pack peak power that is fixedly mounted on electric vehicle is realized.Fig. 7
It is to illustrate the ability to realize the evaluation method of battery pack peak power according to embodiments of the present invention and the battery pack its peak work of device
The structure chart of the exemplary hardware architecture of the estimating system of rate.
As shown in fig. 7, the estimating system 700 of the battery pack peak power in the present embodiment includes：Processor 701, storage
Device 702, communication interface 703 and bus 710, wherein, processor 701, memory 702, communication interface 703 are connected by bus 710
Connect and complete mutual communication.
Specifically, above-mentioned processor 701 can include central processing unit (CPU), or specific integrated circuit (ASIC), or
Person may be configured to implement one or more integrated circuits of the embodiment of the present invention.
Memory 702 can include the mass storage for data or instruction.In a suitable case, memory
702 can be inside or outside the estimating system 700 of battery pack peak power.
Communication interface 703, is mainly used in realizing in the embodiment of the present invention between each module, device, unit and/or equipment
Communication.
Bus 710 includes hardware, software or both, by the part of the estimating system 700 of battery pack peak power coupling each other
It is connected together.In a suitable case, bus 710 may include one or more buses.Although the embodiment of the present invention is described and shown
Go out specific bus, but the present invention considers any suitable bus or interconnection.
In certain embodiments, the estimating system of the battery pack peak power shown in Fig. 7 may be implemented as：Memory,
Processor, communication interface and bus；Memory, processor and communication interface are connected by bus and complete mutual communication；
Memory is used for store program codes；The executable program code that processor is stored by reading in memory is run with that can hold
The corresponding program of line program code, for performing a kind of evaluation method of battery pack peak power, wherein, battery pack its peak work
The evaluation method of rate includes：According to the state-of-charge of battery core in battery pack and the temperature of battery pack, the electric discharge work(of battery pack is obtained
Rate limits value and charge power limits value；The minimum amount of voltage that and maximum voltage value of battery core in battery pack are obtained, based on default
The minimum amount of voltage that and maximum voltage value of voltage restrictive condition, battery core, it is determined that electric discharge peak value power limit coefficient and charging peaks
Power limit coefficient；Based on discharge power limits value, charge power limits value, electric discharge peak value power limit coefficient and charging peaks
Power limit coefficient, calculates the electric discharge peak power of battery pack and the charging peaks power of battery pack.
In further embodiments, the estimating system of the battery pack peak power shown in Fig. 7 can also be implemented as including：
Be stored with the memories of computer executable instructions；And processor, the processor can when performing computer executable instructions
To realize evaluation method and device with reference to Fig. 1 to Fig. 6 battery pack peak powers described.Here, processor can be with battery
Management system and the temperature sensor communication on electrokinetic cell, so that based on from battery management system and/or temperature
The relevant information for spending sensor performs computer executable instructions, so as to realize the battery pack its peak work described with reference to Fig. 1 to Fig. 6
The evaluation method and device of rate.
It should be clear that, the invention is not limited in particular configuration that is described above and being shown in figure and processing.
For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, some tools have been described and illustrated
The step of body, is used as example.But, procedure of the invention is not limited to described and illustrated specific steps, this area
Technical staff can be variously modified, change and add after the spirit of the present invention is understood, or suitable between change step
Sequence.
Functional block shown in structures described above block diagram can be implemented as hardware, software, firmware or their group
Close.When realizing in hardware, its may, for example, be electronic circuit, application specific integrated circuit (ASIC), appropriate firmware, insert
Part, function card etc..When being realized with software mode, element of the invention is used to program or the generation of task needed for performing
Code section.Either code segment can be stored in machine readable media or passed by the data-signal carried in carrier wave program
Defeated medium or communication links are sent." machine readable media " can include storing or transmitting any medium of information.
The example of machine readable media includes electronic circuit, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), soft
Disk, CD-ROM, CD, hard disk, fiber medium, radio frequency (RF) link, etc..Code segment can be via such as internet, inline
The computer network of net etc. is downloaded.
It should also be noted that, the exemplary embodiment referred in the present invention, is retouched based on a series of step or device
State certain methods or system.But, the present invention is not limited to the order of above-mentioned steps, that is to say, that can be according in embodiment
The order referred to performs step, may also be distinct from that the order in embodiment, or some steps are performed simultaneously.
The foregoing is only a specific embodiment of the invention, it is apparent to those skilled in the art that,
For convenience of description and succinctly, the specific work process of the system of foregoing description, module and unit, may be referred to preceding method
Corresponding process in embodiment, will not be repeated here.It should be understood that protection scope of the present invention is not limited thereto, it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, various equivalent modifications or substitutions can be readily occurred in,
These modifications or substitutions should be all included within the scope of the present invention.
Claims (17)
1. a kind of evaluation method of battery pack peak power, it is characterised in that the evaluation method bag of the battery pack peak power
Include：
According to the state-of-charge of battery core in battery pack and the temperature of the battery pack, the discharge power limitation of the battery pack is obtained
Value and charge power limits value；
The minimum amount of voltage that and maximum voltage value of battery core in the battery pack are obtained, based on default voltage restrictive condition, described
Minimum amount of voltage that and the maximum voltage value, it is determined that electric discharge peak value power limit coefficient and charging peaks power limit coefficient；
Based on the discharge power limits value, the charge power limits value, the electric discharge peak value power limit coefficient and described
Charging peaks power limit coefficient, calculates the electric discharge peak power of the battery pack and the charging peaks power of the battery pack.
2. the evaluation method of battery pack peak power according to claim 1, it is characterised in that described according to electric in battery pack
The temperature of the state-of-charge of core and the battery pack, obtains the discharge power limits value of the battery pack and filling for the battery pack
Electrical power limits value, including：
Obtain in the battery pack the minimum battery core SOC of battery core and maximum battery core SOC, and by the battery
The temperature of group is used as battery core temperature in the battery pack；
Using the minimum battery core SOC and the battery core temperature, inquire about build in advance with peak value charge-discharge electric power
Mapping table, obtains the discharge power limits value of the battery pack；
Using the maximum battery core SOC and the battery core temperature, the mapping table is inquired about, the battery is obtained
The charge power limits value of group.
3. the evaluation method of battery pack peak power according to claim 1, it is characterised in that the acquisition battery
The minimum amount of voltage that and maximum voltage value of battery core in group, based on default voltage restrictive condition, the minimum amount of voltage that and described
Maximum voltage value, it is determined that electric discharge peak value power limit coefficient and charging peaks power limit coefficient, including：
The minimum amount of voltage that of battery core when obtaining the battery power discharge in real time, if the minimum amount of voltage that is less than or equal to what is specified
Electric discharge limits voltage and the duration reaches the discharge period specified, and the minimum value in the limit coefficient empirical value that discharges is made
For the electric discharge peak value power limit coefficient；
The maximum voltage value of battery core when obtaining the battery pack charging in real time, if the maximum voltage value is more than or equal to what is specified
Charging limits voltage and the duration reaches the duration of charge specified, and the minimum value in the limit coefficient empirical value that charges is made
For the charging peaks power limit coefficient.
4. the evaluation method of battery pack peak power according to claim 3, it is characterised in that if the minimum
Magnitude of voltage is less than or equal to the electric discharge limitation voltage specified and the duration reaches the discharge period specified, by electric discharge limitation system
The minimum value in empirical value is counted as the electric discharge peak value power limit coefficient, including：
The minimum amount of voltage that is less than or equal to the first electric discharge limitation voltage and the duration reached for the first discharge period, obtains
First electric discharge limit coefficient empirical value；
The minimum amount of voltage that is less than or equal to the second electric discharge limitation voltage and the duration reached for the second discharge period, obtains
Second electric discharge limit coefficient empirical value, wherein, the second electric discharge limitation voltage is less than the described first electric discharge limitation voltage；
It is the described first electric discharge limit coefficient warp to set the electric discharge limit coefficient empirical value of the electric discharge peak value power limit coefficient
The minimum value tested in value and the second electric discharge limit coefficient empirical value.
5. the evaluation method of battery pack peak power according to claim 3, it is characterised in that if the minimum
Magnitude of voltage is less than or equal to the electric discharge limitation voltage specified and the duration reaches the discharge period specified, by electric discharge limitation system
The minimum value in empirical value is counted as the electric discharge peak value power limit coefficient, including：
The minimum amount of voltage that is less than or equal to the first electric discharge limitation voltage and the duration reached for the first discharge period, obtains
First electric discharge limit coefficient empirical value；
The minimum amount of voltage that is less than or equal to the second electric discharge limitation voltage and the duration reached for the second discharge period, obtains
Second electric discharge limit coefficient empirical value, wherein, the second electric discharge limitation voltage is less than the described first electric discharge limitation voltage；
The minimum amount of voltage that is less than or equal to the 3rd electric discharge limitation voltage and the duration reached for the 3rd discharge period, obtains
3rd electric discharge limit coefficient empirical value, wherein, the 3rd electric discharge limitation voltage is less than the described second electric discharge limitation voltage；
It is the described first electric discharge limit coefficient empirical value, the second electric discharge limitation to set the electric discharge peak value power limit coefficient
Minimum value in coefficient empirical value and the 3rd electric discharge limit coefficient empirical value.
6. the evaluation method of battery pack peak power according to claim 3, it is characterised in that if the maximum
Magnitude of voltage is more than or equal to the charging limitation voltage specified and the duration reaches the duration of charge specified, by charging limitation system
The minimum value in empirical value is counted as the charging peaks power limit coefficient, including：
If the maximum voltage value is more than or equal to the first charging limitation voltage and the duration reaches the first duration of charge,
Obtain the first charging limit coefficient empirical value；
If the maximum voltage value is more than or equal to the second charging limitation voltage and the duration reaches the second duration of charge,
The second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage is more than the described first charging and limits voltage；
It is the described first charging limit coefficient empirical value and the second charging limit to set the charging peaks power limit coefficient
Minimum value in coefficient empirical value processed.
7. the evaluation method of battery pack peak power according to claim 3, it is characterised in that if the maximum
Magnitude of voltage is more than or equal to the charging limitation voltage specified and the duration reaches the duration of charge specified, by charging limitation system
The minimum value in empirical value is counted as the charging peaks power limit coefficient, including：
If the maximum voltage value is more than or equal to the first charging limitation voltage and the duration reaches the first duration of charge,
Obtain the first charging limit coefficient empirical value；
If the maximum voltage value is more than or equal to the second charging limitation voltage and the duration reaches the second duration of charge,
The second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage is more than the described first charging and limits voltage；
If the maximum voltage value is more than or equal to the 3rd charging limitation voltage and the duration reaches the 3rd duration of charge,
The 3rd charging limit coefficient empirical value is obtained, wherein, the 3rd charging limitation voltage is more than the described second charging limitation voltage；
It is the described first charging limit coefficient empirical value, the second charging limitation to set the charging peaks power limit coefficient
Minimum value in coefficient empirical value and the 3rd charging limit coefficient empirical value.
8. the evaluation method of battery pack peak power according to claim 1, it is characterised in that the acquisition battery
The minimum amount of voltage that and maximum voltage value of battery core in group, based on default voltage restrictive condition, the minimum amount of voltage that and described
Maximum voltage value, it is determined that electric discharge peak value power limit coefficient and charging peaks power limit coefficient, including：
The minimum amount of voltage that of battery core when obtaining the battery power discharge in real time, the minimum amount of voltage that is more than the electric discharge limit specified
Voltage processed or duration are less than the discharge period specified, and the electric discharge peak value power limit coefficient is 1；
The maximum voltage value of the battery core when battery pack charges is obtained in real time, and the maximum voltage value is less than the charging limit specified
Voltage processed or duration are less than the duration of charge specified, and the charging peaks power limit coefficient is 1.
9. a kind of estimation device of battery pack peak power, it is characterised in that the estimation device bag of the battery pack peak power
Include：
Peak power limits value acquisition module, for the state-of-charge according to battery core in battery pack and the temperature of the battery pack,
Obtain the discharge power limits value and charge power limits value of the battery pack；
Peak power limit coefficient acquisition module, minimum amount of voltage that and maximum voltage for obtaining battery core in the battery pack
Value, based on default voltage restrictive condition, the minimum amount of voltage that and the maximum voltage value, it is determined that electric discharge peak value power limit
Coefficient and charging peaks power limit coefficient；
Peak power calculates module, for based on the discharge power limits value, the charge power limits value, the discharge peak
It is worth power limit coefficient and the charging peaks power limit coefficient, calculates the electric discharge peak power and the electricity of the battery pack
The charging peaks power of pond group.
10. the estimation device of battery pack peak power according to claim 9, it is characterised in that the peak power limit
Value acquisition module processed includes：
State-of-charge acquiring unit, for obtaining the minimum battery core SOC of battery core and maximum battery core lotus in the battery pack
Electricity condition value, and it regard the temperature of the battery pack as battery core temperature in the battery pack；
Discharge power limits value query unit, for utilizing the minimum battery core SOC and the battery core temperature, inquiry
The mapping table with peak value charge-discharge electric power built in advance, obtains the discharge power limits value of the battery pack；
Charge power limits value query unit, for utilizing the maximum battery core SOC and the battery core temperature, inquiry
The mapping table, obtains the charge power limits value of the battery pack.
11. the estimation device of battery pack peak power according to claim 9, it is characterised in that the peak power limit
Coefficient acquisition module processed includes：
Electric discharge peak value power limit coefficient acquiring unit, the minimum voltage of battery core during for obtaining the battery power discharge in real time
Value, if the minimum amount of voltage that is less than or equal to the electric discharge limitation voltage specified and when the duration reaches that the electric discharge specified continues
Between, it regard the minimum value in the limit coefficient empirical value that discharges as the electric discharge peak value power limit coefficient；
Charging peaks power limit coefficient acquiring unit, the maximum voltage of battery core during for obtaining the battery pack charging in real time
Value, if the maximum voltage value is more than or equal to the charging limitation voltage specified and when the duration reaches that the charging specified continues
Between, it regard the minimum value in the limit coefficient empirical value that charges as the charging peaks power limit coefficient.
12. the estimation device of battery pack peak power according to claim 11, it is characterised in that the electric discharge its peak work
Rate limit coefficient acquiring unit specifically for：
The minimum amount of voltage that is less than or equal to the first electric discharge limitation voltage and the duration reached for the first discharge period, obtains
First electric discharge limit coefficient empirical value；
The minimum amount of voltage that is less than or equal to the second electric discharge limitation voltage and the duration reached for the second discharge period, obtains
Second electric discharge limit coefficient empirical value, wherein, the second electric discharge limitation voltage is less than the described first electric discharge limitation voltage；
It is the described first electric discharge limit coefficient warp to set the electric discharge limit coefficient empirical value of the electric discharge peak value power limit coefficient
The minimum value tested in value and the second electric discharge limit coefficient empirical value.
13. the estimation device of battery pack peak power according to claim 11, it is characterised in that the electric discharge its peak work
Rate limit coefficient acquiring unit specifically for：
The minimum amount of voltage that is less than or equal to the first electric discharge limitation voltage and the duration reached for the first discharge period, obtains
First electric discharge limit coefficient empirical value；
The minimum amount of voltage that is less than or equal to the second electric discharge limitation voltage and the duration reached for the second discharge period, obtains
Second electric discharge limit coefficient empirical value, wherein, the second electric discharge limitation voltage is less than the described first electric discharge limitation voltage；
The minimum amount of voltage that is less than or equal to the 3rd electric discharge limitation voltage and the duration reached for the 3rd discharge period, obtains
3rd electric discharge limit coefficient empirical value, wherein, the 3rd electric discharge limitation voltage is less than the described second electric discharge limitation voltage；
It is the described first electric discharge limit coefficient empirical value, the second electric discharge limitation to set the electric discharge peak value power limit coefficient
Minimum value in coefficient empirical value and the 3rd electric discharge limit coefficient empirical value.
14. the estimation device of battery pack peak power according to claim 11, it is characterised in that the charging peaks work(
Rate limit coefficient acquiring unit specifically for：
If the maximum voltage value is more than or equal to the first charging limitation voltage and the duration reaches the first duration of charge,
Obtain the first charging limit coefficient empirical value；
If the maximum voltage value is more than or equal to the second charging limitation voltage and the duration reaches the second duration of charge,
The second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage is more than the described first charging and limits voltage；
It is the described first charging limit coefficient empirical value and the second charging limit to set the charging peaks power limit coefficient
Minimum value in coefficient empirical value processed.
15. the estimation device of battery pack peak power according to claim 11, it is characterised in that the charging peaks work(
Rate limit coefficient acquiring unit specifically for：
If the maximum voltage value is more than or equal to the first charging limitation voltage and the duration reaches the first duration of charge,
Obtain the first charging limit coefficient empirical value；
If the maximum voltage value is more than or equal to the second charging limitation voltage and the duration reaches the second duration of charge,
The second charging limit coefficient empirical value is obtained, wherein, the second charging limitation voltage is more than the described first charging and limits voltage；
If the maximum voltage value is more than or equal to the 3rd charging limitation voltage and the duration reaches the 3rd duration of charge,
The 3rd charging limit coefficient empirical value is obtained, wherein, the 3rd charging limitation voltage is more than the described second charging limitation voltage；
It is the described first charging limit coefficient empirical value, the second charging limitation to set the charging peaks power limit coefficient
Minimum value in coefficient empirical value and the 3rd charging limit coefficient empirical value.
16. the estimation device of battery pack peak power according to claim 9, it is characterised in that
Battery core when the charging peaks power limit coefficient acquiring unit is additionally operable to obtain the battery power discharge in real time is most
Small voltage value, when the minimum amount of voltage that is more than the electric discharge limitation voltage specified or duration lasting less than the electric discharge specified
Between, the electric discharge peak value power limit coefficient is 1；
The charging peaks power limit coefficient acquiring unit is specifically additionally operable to obtain the battery core during battery pack charging in real time
Maximum voltage value, the maximum voltage value is less than the charging limitation voltage specified or the duration is less than the charging specified and continued
Time, the charging peaks power limit coefficient is 1.
17. a kind of estimating system of battery pack peak power, it is characterised in that the estimating system bag of the battery pack peak power
Include：
Memory, processor, communication interface and bus；
The memory, the processor and the communication interface are connected by the bus and complete mutual communication；
The memory is used for store program codes；
The processor is run and the executable program by reading the executable program code stored in the memory
The corresponding program of code, for performing a kind of evaluation method of battery pack peak power, wherein, the battery pack peak power
Evaluation method include：
According to the state-of-charge of battery core in battery pack and the temperature of the battery pack, the discharge power limitation of the battery pack is obtained
Value and charge power limits value；
The minimum amount of voltage that and maximum voltage value of battery core in the battery pack are obtained, based on default voltage restrictive condition, described
Minimum amount of voltage that and the maximum voltage value, it is determined that electric discharge peak value power limit coefficient and charging peaks power limit coefficient；
Based on the discharge power limits value, the charge power limits value, the electric discharge peak value power limit coefficient and described
Charging peaks power limit coefficient, calculates the electric discharge peak power of the battery pack and the charging peaks power of the battery pack.
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| CN201710380983.XA CN107102271A (en) | 2017-05-25 | 2017-05-25 | Estimation method, device and system for peak power of battery pack |
| PCT/CN2017/093382 WO2018214266A1 (en) | 2017-05-25 | 2017-07-18 | Battery pack peak power estimation method, device, and system |
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| CN108549746B (en) * | 2018-03-26 | 2021-11-26 | 浙江零跑科技股份有限公司 | Battery system power limit estimation method based on cell voltage |
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| US11774507B2 (en) | 2021-03-04 | 2023-10-03 | Kilpatrick Townsend & Stockton Llp | Method and device for estimating power limit of battery pack, and battery management system |
| CN114614118A (en) * | 2022-03-09 | 2022-06-10 | 东莞新能安科技有限公司 | Battery power processing method and device and battery management system |
| CN114614118B (en) * | 2022-03-09 | 2024-02-27 | 东莞新能安科技有限公司 | Battery power processing method, device and battery management system |
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| WO2018214266A1 (en) | 2018-11-29 |
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