CN110376535A - A kind of determination method and device of dump energy - Google Patents
A kind of determination method and device of dump energy Download PDFInfo
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- CN110376535A CN110376535A CN201910775576.8A CN201910775576A CN110376535A CN 110376535 A CN110376535 A CN 110376535A CN 201910775576 A CN201910775576 A CN 201910775576A CN 110376535 A CN110376535 A CN 110376535A
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- battery pack
- power battery
- energy
- temperature
- vehicle
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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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
-
- 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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- 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
This application discloses a kind of residual energy method for determination of amount, when vehicle starts running, determine the initial residual energy of the power battery pack of vehicle.During vehicle driving, the operating current and operating voltage of power battery pack are obtained in real time, and the energy of vehicle power battery pack consumption in the process of moving is calculated based on the operating current and operating voltage, and determine the ratio of the energy of power battery pack consumption and the utilisable energy of power battery pack.The difference between initial residual energy and ratio is calculated, the current residual electricity of power battery pack is obtained.Since acquired initial residual energy is accurate, and the utilisable energy of the operating current of acquired power battery pack and operating voltage and power battery pack is accurate, so the current residual electricity for the power battery pack being calculated is also accurate.The accuracy of the current residual electricity of determining power battery pack is improved, further, so that the course continuation mileage determined based on the current residual electricity is also more accurate.
Description
Technical field
This application involves vehicular fields, more particularly to a kind of determination method and device of dump energy.
Background technique
Currently, electric car using more and more extensive.Power battery pack is the energy source of electric car.Therefore, right
Determine that the dump energy (state of energy, SOE) of power battery pack is determined, it appears particularly important.Because according to dynamic
The SOE of power battery pack may further determine that the course continuation mileage of electric car.
In traditional technology, the residual power percentage of SOE and power battery pack can be determined by way of experiment
Mapping relations between (state of charge, SOC).To determine SOE corresponding with SOC according to the mapping relations.But
It is, since the mapping relations are determining by once testing, and it is big due to once testing existing application condition, it utilizes
The SOE that the mapping relations determine is often less accurate, further, causes the course continuation mileage determined based on the SOE also less quasi-
Really.
Summary of the invention
Technical problems to be solved in this application are the SOE inaccuracy determined in traditional technology, further cause to be based on
The course continuation mileage that the SOE is determined is also inaccurate, provides a kind of determination method and device of dump energy.
In a first aspect, the embodiment of the present application provides a kind of residual energy method for determination of amount, which comprises
Determine the initial residual energy of the power battery pack of vehicle；The initial residual energy is the vehicle starting row
The power battery pack corresponding dump energy when sailing；
During the vehicle driving, the operating current and operating voltage of the power battery pack are obtained；
Based on the operating current and the operating voltage, the vehicle power battery pack in the process of moving is calculated
The energy of consumption, and determine the ratio of the energy of the power battery pack consumption and the utilisable energy of the power battery pack；
By the difference between the initial residual energy and the ratio, it is determined as the current residual of the power battery pack
Electricity.
Optionally, the time that the vehicle is stood before starting running is more than or equal to preset time threshold；It is described
Determine the initial residual energy of the power battery pack of vehicle, comprising:
The open-circuit voltage for obtaining each single battery in the power battery pack obtains multiple open-circuit voltages, and determines institute
State the minimum voltage in multiple open-circuit voltages；And obtain the first temperature of the power battery pack；
It, will according to the mapping relations between the temperature of predetermined power battery pack, open-circuit voltage and dump energy
Corresponding residual energy when the temperature of the power battery pack is first temperature and the open-circuit voltage is the minimum voltage
Amount, is determined as the initial residual energy.
Optionally, determining that the energy of power battery pack consumption accounts for the percentage of the utilisable energy of the power battery pack
Than before, the method also includes:
Obtain the second temperature of the power battery pack；And obtain the health degree of the power battery pack；
According to the temperature of predetermined power battery pack, power battery pack health degree and active volume between
Mapping relations, the temperature by the power battery pack is the second temperature and the health degree is the power battery pack
Health degree when corresponding active volume, be determined as the active volume of the power battery pack.
Optionally, the method also includes:
According to the current residual electricity, the course continuation mileage of the vehicle is calculated.
Second aspect, the embodiment of the present application provide a kind of determining device of dump energy, and described device includes:
First determination unit, the initial residual energy of the power battery pack for determining vehicle；The initial residual energy,
The power battery pack corresponding dump energy when being started running for the vehicle；
First acquisition unit, for obtaining the operating current of the power battery pack during vehicle driving
And operating voltage；
First computing unit calculates the vehicle and is running over for being based on the operating current and the operating voltage
The energy of the consumption of power battery pack described in journey；
Second determination unit, for determining the energy of the power battery pack consumption and the available energy of the power battery pack
The ratio of amount；
Third determination unit, for being determined as the difference between the initial residual energy and the ratio described dynamic
The current residual electricity of power battery pack.
Optionally, the time that the vehicle is stood before starting running is more than or equal to preset time threshold；It is described
First determination unit, is specifically used for:
The open-circuit voltage for obtaining each single battery in the power battery pack obtains multiple open-circuit voltages, and determines institute
State the minimum voltage in multiple open-circuit voltages；And obtain the first temperature of the power battery pack；
It, will according to the mapping relations between the temperature of predetermined power battery pack, open-circuit voltage and dump energy
Corresponding residual energy when the temperature of the power battery pack is first temperature and the open-circuit voltage is the minimum voltage
Amount, is determined as the initial residual energy.
Optionally, described device further include:
Second acquisition unit, for obtaining the second temperature of the power battery pack；And obtain the power battery pack
Health degree；
4th determination unit, for the health degree according to the temperature of predetermined power battery pack, power battery pack
And the mapping relations between active volume, it is the second temperature and the healthy journey by the temperature of the power battery pack
Degree corresponding active volume when being the health degree of the power battery pack, is determined as the active volume of the power battery pack.
Optionally, described device further include:
Second computing unit, for calculating the course continuation mileage of the vehicle according to the current residual electricity.
The third aspect, the embodiment of the present application provides a kind of dump energy, and locking equipment, the equipment include: processor really
And memory；
The memory, for storing instruction；
The processor executes the above first aspect any one institute for executing the described instruction in the memory
The method stated.
Fourth aspect, the embodiment of the present application provides a kind of computer readable storage medium, including instruction, when it is being calculated
When being run on machine, so that computer executes method described in the above first aspect any one.
Compared with prior art, the embodiment of the present application has the advantage that
The embodiment of the present application provides a kind of residual energy method for determination of amount, specifically, when vehicle starts running, determines
The initial residual energy of the power battery pack of vehicle.During vehicle driving, the work of the power battery pack is obtained in real time
Make electric current and operating voltage, and the vehicle power electric in the process of moving is calculated based on the operating current and operating voltage
The energy of pond group consumption, and determine the ratio of the energy of the power battery pack consumption and the utilisable energy of the power battery pack
Value.The difference between the initial residual energy and the ratio is then calculated, the current residual of the power battery pack is obtained
Electricity.It can be seen that can determine the power by the way of calculating in real time using scheme provided by the embodiments of the present application
The current residual electricity of battery pack.And during calculating, acquired initial residual energy may be considered accurately, and
The operating current and operating voltage of acquired power battery pack and the utilisable energy of the power battery pack can consider
It is accurately, therefore, the current residual electricity for the power battery pack being calculated is also accurate.With prior art phase
Than the accuracy of the current residual electricity of determining power battery pack being improved, further, so that true based on the current residual electricity
Fixed course continuation mileage is also more accurate.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of residual energy method for determination of amount provided by the embodiments of the present application；
Fig. 2 is a kind of structural schematic diagram of the determining device of dump energy provided by the embodiments of the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
Present inventor has found after study, in the prior art, SOE and power can be determined by way of experiment
Mapping relations between the SOC of battery pack.To determine SOE corresponding with SOC according to the mapping relations.But since this is reflected
The relationship of penetrating is determining by once testing, and big due to once testing existing application condition, utilizes the mapping relations
Determining SOE is often less accurate, further, causes the course continuation mileage determined based on the SOE also less accurate.
To solve the above-mentioned problems, in the embodiment of the present application, by the way of calculating in real time, institute is accurately calculated
State the current residual electricity of power battery pack.The accuracy of the current residual electricity of determining power battery pack is improved, further,
So that the course continuation mileage determined based on the current residual electricity is also more accurate.
With reference to the accompanying drawing, the various non-limiting embodiments of the application are described in detail.
Illustrative methods
Referring to Fig. 1, which is a kind of flow diagram of residual energy method for determination of amount provided by the embodiments of the present application.
Residual energy method for determination of amount provided by the embodiments of the present application can be executed, the control by the controller on vehicle
Device processed can be the central controller on the vehicle, or battery management system (Battery on vehicle
Management System, BMS) in controller, it is, of course, also possible to be that other controllers execute, the embodiment of the present application is not done
It is specific to limit.Residual energy method for determination of amount provided by the embodiments of the present application, such as can be real by following steps S101-S104
It is existing.
S101: the initial residual energy of the power battery pack of vehicle is determined；The initial residual energy is opened for the vehicle
Begin the corresponding dump energy of the power battery pack when driving.
It should be noted that the initial residual energy of the power battery pack referred in the embodiment of the present application, is described
The initial SOE of power battery pack, the initial SOE can indicate the residue of power battery pack when the power battery pack starts running
The ratio of energy and the utilisable energy of the power battery pack.
The embodiment of the present application does not limit the specific implementation for determining the initial residual energy of the power battery pack specifically.
As an example, the value of dump energy shown by the energy display instrument on the available vehicle, as described first
Beginning dump energy.
As another example, it is contemplated that in practical applications, vehicle is after standing for a period of time, i.e. power battery pack
A period of time do not discharge after, in the power battery pack each single battery open-circuit voltage (Open Circuit Voltage,
OCV it) is in stable state, the dump energy of identified power battery pack is more accurately at this time.So in the application reality
It applies in a kind of realization of example, is more than or equal to preset time threshold when the time that the vehicle is stood before starting running
When, the initial residual energy of the power battery pack can be determined according to the open-circuit voltage of single battery in the power battery pack
Amount.The embodiment of the present application does not limit the preset time threshold specifically, and the preset time threshold can according to the actual situation really
It is fixed, as an example, the preset time threshold, such as can be one hour.Furthermore, it is contemplated that in practical applications, moving
The discharge capability of single battery in power battery pack is related to the temperature of the power battery pack.So determining the power electric
When the initial residual energy of pond group, it is also contemplated that the influence of the temperature of power battery pack.
In consideration of it, can be predefined by way of many experiments in a kind of implementation of the embodiment of the present application
Mapping relations between the temperature of power battery pack, open-circuit voltage and dump energy.It, can be with after determining the mapping relations
The initial residual energy of the power battery pack is determined using the mapping relations.The temperature of power battery pack mentioned herein, can
Think the mean temperature obtained using the temperature sensor measurement in multiple mould groups for being placed in power battery pack, the open circuit electricity
Pressure is the minimum value of the open-circuit voltage of each single battery in the power battery pack.
It in the embodiment of the present application, can when determining the initial residual energy of the power battery pack using the mapping relations
To obtain the open-circuit voltage of each single battery in the power battery pack, multiple open-circuit voltages are obtained, and determination is the multiple
Minimum voltage in open-circuit voltage；And obtain the first temperature of the power battery pack.Then, according to predetermined dynamic
Mapping relations between the temperature of power battery pack, open-circuit voltage and dump energy, are institute by the temperature of the power battery pack
Corresponding dump energy when the first temperature and the open-circuit voltage are the minimum voltage is stated, the initial residual energy is determined as
Amount.
It is because of multiple monomer it should be noted why determining the minimum voltage in the multiple open-circuit voltage
In battery, the open-circuit voltage of the smallest single battery of open-circuit voltage can embody the discharge capability of entire power battery pack, when opening
After voltage the smallest single battery electric discharge in road terminates, which then cannot provide energy again for vehicle.
It should be noted that the embodiment of the present application, which does not limit specifically, obtains each single battery in the power battery pack
The specific implementation of open-circuit voltage can use voltage sensor and measure each single battery as an example
Open-circuit voltage.
The embodiment of the present application does not limit the specific implementation for obtaining the first temperature of the power battery pack specifically, as
A kind of example can use the first temperature of power battery pack described in temperature sensor measurement.Specifically, in order to enable it is acquired
The first temperature it is accurate enough, can use described in the temperature sensor measurement in multiple mould groups for being placed in the power battery pack
The average value for multiple temperature that measurement obtains then is determined as first temperature by the temperature of power battery pack.
S102: during the vehicle driving, the operating current and operating voltage of the power battery pack are obtained.
S103: it is based on the operating current and the operating voltage, calculates the vehicle power in the process of moving
The energy of battery pack consumption, and determine that the energy of the power battery pack consumption accounts for the hundred of the utilisable energy of the power battery pack
Divide ratio.
In the embodiment of the present application, it is contemplated that the energy that vehicle consumes in the process of moving, with the power battery pack
Operating current and operating voltage and time correlation, i.e. energy=voltage * electric current * time, so in the embodiment of the present application, it can
To obtain the operating current and operating voltage of power battery pack in real time, consumed in the process of moving in order to calculating the vehicle
Energy.
It should be noted that the operating current of power battery pack mentioned herein, refers to the total current of power battery pack,
Rather than the corresponding operating current of some single battery.Correspondingly, the operating voltage of power battery pack mentioned herein, refers to
It is the total voltage of power battery pack, rather than the corresponding operating voltage of some single battery.
In the embodiment of the present application, it can use the operating voltage that voltage sensor measures the power battery pack, utilize
The operating current of power battery pack described in current sensor measurement.Theoretically, the work of voltage sensor measurement power battery pack
It is one-to-one at the time of voltage and at the time of the operating current of power battery pack described in the current sensor measurement.I.e.
Synchronization, voltage sensor measurement obtain an operating voltage, and corresponding current sensor measurement obtains an operating current,
So, due to the operating current of acquisition and the corresponding synchronization of operating voltage, so energy consumed by the moment is just
It can accurately calculate.It is contemplated that voltage sensor measures the work electricity of the power battery pack in practical application
There may be the regular hour is poor between at the time of pressure and at the time of the electric current of power battery pack described in current sensor measurement, and
This time difference may be to the calculated result band for calculating the vehicle energy that the power battery pack consumes in the process of moving
Carry out certain error.So in the embodiment of the present application, can control the work that voltage sensor measures the power battery pack
The possible time difference is as small as possible between at the time of voltage and at the time of the electric current of power battery pack described in current sensor measurement,
It is, for example, less than 10 milliseconds.In general, this time difference is travelling to the vehicle is calculated when the time difference is less than 10 milliseconds
The calculated result bring error of the energy of the power battery pack consumption can be ignored in the process.
In the embodiment of the present application, it can use formulaCalculate the vehicle power in the process of moving
The energy of battery pack consumption.
Wherein:
t0At the time of correspondence when being started running for the vehicle；
P (τ)=U (τ) × I (τ)；
U (τ) is the operating voltage of the τ moment corresponding power battery pack；
I (τ) is the operating current of the τ moment corresponding power battery pack.
In the embodiment of the present application, the operating current and work electricity of the power battery pack can be obtained according to predeterminated frequency
Pressure, the embodiment of the present application do not limit the predeterminated frequency specifically, it is to be understood that the predeterminated frequency is higher, then to accrued
The energy of obtained power battery pack consumption is more accurate.
As above, theoretically, at the time of voltage sensor measures the operating voltage of power battery pack with the current sense
It is one-to-one at the time of device measures the operating current of the power battery pack.That is synchronization, voltage sensor measure
To an operating voltage, corresponding current sensor measurement obtains an operating current, so, due to the work electricity of acquisition
Synchronization corresponding with operating voltage is flowed, so energy consumed by the moment can be calculated accurately.But it examines
Consider in practical application, at the time of voltage sensor measures the operating voltage of the power battery pack and current sensor measurement institute
There may be the regular hour is poor between at the time of stating the electric current of power battery pack, and this time difference may be to calculating the vehicle
The calculated result of the energy of the described in the process of moving power battery pack consumption brings certain error.So in the application reality
It applies in another implementation of example, in order to enable the power battery pack disappears the vehicle being calculated in the process of moving
The energy of consumption is more accurate, is utilizing formulaCalculate the vehicle power battery pack consumption in the process of moving
Energy when, may be incorporated into corresponding correction factorη, that is, utilizeηMultiplied byIn the process of moving as the vehicle
The energy of the power battery pack consumption.
The embodiment of the present application does not limit specificallyηSpecific value,ηSpecific value for example can be by the side demarcated in advance
Formula determines.
It is calculated after the vehicle energy that the power battery pack consumes in the process of moving, can further obtain
The utilisable energy of the power battery pack is taken, then determines energy and the power battery pack that the power battery pack consumes
The ratio of utilisable energy.
The embodiment of the present application does not limit the specific implementation for obtaining the utilisable energy of the power battery pack specifically, as
A kind of example, the utilisable energy when power battery pack can be dispatched from the factory are determined as the utilisable energy of the power battery pack.
As another example, it is contemplated that in practical applications, the utilisable energy of power battery pack and power battery pack
Temperature is related, it is however generally that, corresponding utilisable energy when the temperature of power battery pack is relatively high, than the temperature ratio of power battery pack
Corresponding utilisable energy is more when lower.Moreover, the health degree of the utilisable energy of power battery pack and the power battery pack
(state of health, SOH) is also related, it is however generally that, health degree when power battery pack just appears on the scene is relatively good, then moves
After utilisable energy when power battery pack is just dispatched from the factory is relatively high, and power battery pack uses a period of time, health degree is had
Declined, so it is low when the utilisable energy of corresponding power battery pack is than factory.In this year application embodiment, in order to enable really
The utilisable energy of fixed power battery pack is more accurate.The temperature of power battery pack can be determined in a manner of first passing through many experiments in advance
It spends, the mapping relations between the health degree and active volume of power battery pack.Then using described in mapping relations determination
The utilisable energy of power battery pack.The temperature of power battery pack mentioned herein can be to be placed in the power electric using multiple
The mean temperature that temperature sensor measurement in the mould group of pond group obtains.
It in the embodiment of the present application, can be with when determining the utilisable energy of the power battery pack using the mapping relations
The second temperature of the power battery pack is obtained, and obtains the health degree of the power battery pack.Then, according to predetermined
The temperature of power battery pack, the mapping relations between the health degree of power battery pack and active volume, by the power
It is corresponding when the temperature of battery pack is the second temperature and the health degree is the health degree of the power battery pack can
With capacity, it is determined as the active volume of the power battery pack.
The embodiment of the present application does not limit the specific implementation for determining the health degree of the power battery pack specifically, as
A kind of example, can be according to accumulative mileage travelled of the charge and discharge number of the power battery pack, the vehicle etc. because usually true
The health degree of the fixed power battery pack.It is of course also possible to determine the healthy journey of the power battery pack according to other way
Degree, the embodiment of the present application are not especially limited.
The embodiment of the present application does not limit the specific implementation for obtaining the second temperature of the power battery pack specifically, as
A kind of example can use the second temperature of power battery pack described in temperature sensor measurement.Specifically, in order to enable it is acquired
Second temperature it is accurate enough, can use described in the temperature sensor measurement in multiple mould groups for being placed in the power battery pack
The average value for multiple temperature that measurement obtains then is determined as the second temperature by the temperature of power battery pack.
S104: by the difference between the initial residual energy and the ratio, it is determined as working as the power battery pack
Preceding remaining capacity.
After the ratio for determining the energy of the power battery pack consumption and the utilisable energy of the power battery pack, utilize
The initial residual energy subtracts the ratio, and the current residual electricity of the power battery pack can be obtained.
It should be noted that the current residual electricity that t moment is calculated in vehicle travel process, as described in t moment
The ratio of the utilisable energy of the dump energy of power battery pack and the power battery pack.
It as can be seen from the above description, can be by the way of calculating in real time, really using scheme provided by the embodiments of the present application
The current residual electricity of the fixed power battery pack.And during calculating, acquired initial residual energy can consider
It is the accurately and utilisable energy of the operating current of acquired power battery pack and operating voltage and the power battery pack
It may be considered accurately, therefore, the current residual electricity for the power battery pack being calculated is also accurate.With it is existing
There is technology to compare, improve the accuracy of the current residual electricity of determining power battery pack, further, so that current surplus based on this
The course continuation mileage that remaining electricity determines is also more accurate.
It, can be according to institute after determining the current residual electricity in a kind of implementation in the embodiment of the present application
Current residual electricity is stated, the course continuation mileage of the vehicle is calculated.It is understood that since the current residual electricity is accurate
's.So the course continuation mileage based on determined by the current residual electricity is also accurate.Further, it is determined that the course continuation mileage it
Afterwards, the car-mounted terminal which can also be sent on vehicle, so that car-mounted terminal shows the course continuation mileage, thus
User is facilitated to implement adjustment traveling plan according to the course continuation mileage.
The embodiment of the present application does not limit the tool that the course continuation mileage of the vehicle is calculated according to the current residual electricity specifically
Body implementation can be calculated in the continuation of the journey as an example according to the parameter of the energy consumption part on the vehicle
Journey.As another example, it can be travelled and be recorded based on the history of the vehicle, the corresponding course continuation mileage of training determines model,
Then, model is determined using the course continuation mileage, determine course continuation mileage corresponding with the current residual electricity.
Example devices
Based on the residual energy method for determination of amount that above embodiments provide, the embodiment of the present application also provides a kind of residual energies
The determining device of amount introduces the device below in conjunction with attached drawing.
Referring to fig. 2, which is a kind of structural schematic diagram of the determining device of dump energy provided by the embodiments of the present application.
The determining device 200 of dump energy shown in Fig. 2, such as may include: that the first determination unit 201, first obtains
Unit 202, the first computing unit 203, the second determination unit 204 and third determination unit 205.
First determination unit 201, the initial residual energy of the power battery pack for determining vehicle；The initial residual energy
Amount, the power battery pack corresponding dump energy when being started running for the vehicle；
First acquisition unit 202, for during the vehicle driving, obtaining the work electricity of the power battery pack
Stream and operating voltage；
First computing unit 203 calculates the vehicle and is travelling for being based on the operating current and the operating voltage
The energy of the power battery pack consumption in the process；
Second determination unit 204, for determine power battery pack consumption energy and the power battery pack can
With the ratio of energy；
Third determination unit 205, it is described for being determined as the difference between the initial residual energy and the ratio
The current residual electricity of power battery pack.
Optionally, the time that the vehicle is stood before starting running is more than or equal to preset time threshold；It is described
First determination unit 201, is specifically used for:
The open-circuit voltage for obtaining each single battery in the power battery pack obtains multiple open-circuit voltages, and determines institute
State the minimum voltage in multiple open-circuit voltages；And obtain the first temperature of the power battery pack；
It, will according to the mapping relations between the temperature of predetermined power battery pack, open-circuit voltage and dump energy
Corresponding residual energy when the temperature of the power battery pack is first temperature and the open-circuit voltage is the minimum voltage
Amount, is determined as the initial residual energy.
Optionally, described device 200 further include:
Second acquisition unit, for obtaining the second temperature of the power battery pack；And obtain the power battery pack
Health degree；
4th determination unit, for the health degree according to the temperature of predetermined power battery pack, power battery pack
And the mapping relations between active volume, it is the second temperature and the healthy journey by the temperature of the power battery pack
Degree corresponding active volume when being the health degree of the power battery pack, is determined as the active volume of the power battery pack.
Optionally, described device 200 further include:
Second computing unit, for calculating the course continuation mileage of the vehicle according to the current residual electricity.
Since described device 200 is the corresponding device of method provided with above method embodiment, described device 200 it is each
The specific implementation of a unit is same design with above method embodiment, accordingly, with respect to each unit of described device 200
Specific implementation, can refer to above method embodiment description section, details are not described herein again.
It as can be seen from the above description, can be by the way of calculating in real time, really using scheme provided by the embodiments of the present application
The current residual electricity of the fixed power battery pack.And during calculating, acquired initial residual energy can consider
It is the accurately and utilisable energy of the operating current of acquired power battery pack and operating voltage and the power battery pack
It may be considered accurately, therefore, the current residual electricity for the power battery pack being calculated is also accurate.With it is existing
There is technology to compare, improve the accuracy of the current residual electricity of determining power battery pack, further, so that current surplus based on this
The course continuation mileage that remaining electricity determines is also more accurate.
The embodiment of the present application also provides a kind of dump energy, locking equipment, the equipment include: processor and storage really
Device；
The memory, for storing instruction；
The processor executes above method embodiment any one for executing the described instruction in the memory
The method.
The embodiment of the present application also provides a kind of computer readable storage mediums, including instruction, when it is transported on computers
When row, so that computer executes method described in above method embodiment any one.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the application
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims
The foregoing is merely the preferred embodiments of the application, not to limit the application, it is all in spirit herein and
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (10)
1. a kind of residual energy method for determination of amount, which is characterized in that the described method includes:
Determine the initial residual energy of the power battery pack of vehicle；The initial residual energy, when being started running for the vehicle
The corresponding dump energy of the power battery pack；
During the vehicle driving, the operating current and operating voltage of the power battery pack are obtained；
Based on the operating current and the operating voltage, the vehicle power battery pack consumption in the process of moving is calculated
Energy, and determine the ratio of the energy of power battery pack consumption and the utilisable energy of the power battery pack；
By the difference between the initial residual energy and the ratio, it is determined as the current residual energy of the power battery pack
Amount.
2. the method according to claim 1, wherein the time that the vehicle is stood before starting running is greater than
Or it is equal to preset time threshold；The initial residual energy of the power battery pack of the determining vehicle, comprising:
The open-circuit voltage for obtaining each single battery in the power battery pack obtains multiple open-circuit voltages, and determination is described more
Minimum voltage in a open-circuit voltage；And obtain the first temperature of the power battery pack；
It, will be described according to the mapping relations between the temperature of predetermined power battery pack, open-circuit voltage and dump energy
Corresponding dump energy when the temperature of power battery pack is first temperature and the open-circuit voltage is the minimum voltage,
It is determined as the initial residual energy.
3. the method according to claim 1, wherein determining that it is described that the energy of the power battery pack consumption accounts for
Before the percentage of the utilisable energy of power battery pack, the method also includes:
Obtain the second temperature of the power battery pack；And obtain the health degree of the power battery pack；
According to the temperature of predetermined power battery pack, power battery pack health degree and active volume between mapping
Relationship, the temperature by the power battery pack is the second temperature and the health degree is the strong of the power battery pack
Corresponding active volume when Kang Chengdu, is determined as the active volume of the power battery pack.
4. method according to claim 1 to 3, which is characterized in that the method also includes:
According to the current residual electricity, the course continuation mileage of the vehicle is calculated.
5. a kind of determining device of dump energy, which is characterized in that described device includes:
First determination unit, the initial residual energy of the power battery pack for determining vehicle；The initial residual energy, for institute
State the corresponding dump energy of power battery pack when vehicle starts running；
First acquisition unit, for obtaining the operating current and work of the power battery pack during vehicle driving
Make voltage；
First computing unit calculates the vehicle in the process of moving for being based on the operating current and the operating voltage
The energy of the power battery pack consumption；
Second determination unit, for determining the energy and the utilisable energy of the power battery pack of the power battery pack consumption
Ratio；
Third determination unit, for being determined as the power electric for the difference between the initial residual energy and the ratio
The current residual electricity of pond group.
6. device according to claim 5, which is characterized in that the time that the vehicle is stood before starting running is greater than
Or it is equal to preset time threshold；First determination unit, is specifically used for:
The open-circuit voltage for obtaining each single battery in the power battery pack obtains multiple open-circuit voltages, and determination is described more
Minimum voltage in a open-circuit voltage；And obtain the first temperature of the power battery pack；
It, will be described according to the mapping relations between the temperature of predetermined power battery pack, open-circuit voltage and dump energy
Corresponding dump energy when the temperature of power battery pack is first temperature and the open-circuit voltage is the minimum voltage,
It is determined as the initial residual energy.
7. device according to claim 5, which is characterized in that described device further include:
Second acquisition unit, for obtaining the second temperature of the power battery pack；And obtain the strong of the power battery pack
Kang Chengdu；
4th determination unit, for according to the temperature of predetermined power battery pack, the health degree of power battery pack and
Mapping relations between active volume, the temperature by the power battery pack is the second temperature and the health degree is
Corresponding active volume when the health degree of the power battery pack, is determined as the active volume of the power battery pack.
8. according to device described in claim 5-7 any one, which is characterized in that described device further include:
Second computing unit, for calculating the course continuation mileage of the vehicle according to the current residual electricity.
9. a kind of dump energy locking equipment really, which is characterized in that the equipment includes: processor and memory；
The memory, for storing instruction；
The processor, for executing the described instruction in the memory, perform claim requires side described in 1-4 any one
Method.
10. a kind of computer readable storage medium, which is characterized in that including instruction, when run on a computer, make to succeed in one's scheme
Calculation machine executes method described in the above claim 1-4 any one.
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Application publication date: 20191025 |