CN106772107A - A kind of determination method and device of the state-of-charge of battery - Google Patents
A kind of determination method and device of the state-of-charge of battery Download PDFInfo
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- CN106772107A CN106772107A CN201710132361.5A CN201710132361A CN106772107A CN 106772107 A CN106772107 A CN 106772107A CN 201710132361 A CN201710132361 A CN 201710132361A CN 106772107 A CN106772107 A CN 106772107A
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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
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Abstract
The present invention discloses a kind of determination method and device of the state-of-charge of battery, and methods described includes：Obtain the environment temperature that battery is presently in, from in advance in the mapping relations between the environment temperature and bottom electricity of battery configuration, acquisition has the bottom electricity of mapping relations with the environment temperature, and the bottom electricity makes the battery available minimum electricity under the environment temperature for expression.The dump energy of the battery is obtained, and judges the dump energy whether less than the bottom electricity.If the dump energy is less than the bottom electricity, the state-of-charge SOC of the battery is defined as 0.The present invention can embody influence of the environment temperature to the SOC of battery, provide the user more accurately result.
Description
Technical field
The present invention relates to data processing field, and in particular to a kind of determination method and device of the state-of-charge of battery.
Background technology
State-of-charge (the English of battery：State of Charge, referred to as：SOC) it is used to represent the current discharge and recharge of battery
Ability, is typically directly represented with the dump energy of battery with the ratio of its electricity when fully charged.
When being in different environment temperatures due to battery, its charging and discharging capabilities may be affected, for instance in extremely cold
Even if the battery dump energy of environment is 30C, but its current charging and discharging capabilities may be 0, if that is, now with perseverance
Determine electric current I electric discharges, the battery reaches discharge cut-off voltage immediately due to DC internal resistance very conference, that is to say, that battery is now put not
Go out electricity.And if influenceed by environment temperature using the charging and discharging capabilities that existing SOC calculations can not embody battery, be
The SOC of the battery that user provides is inaccurate.
The content of the invention
The invention provides a kind of determination method and device of the state-of-charge of battery, environment temperature can be embodied to battery
SOC influence, provide the user more accurately result.
The invention provides a kind of determination method of the state-of-charge of battery, methods described includes：
Obtain the environment temperature that battery is presently in；
From in advance for the mapping relations between the environment temperature and bottom electricity of battery configuration, obtain and the ring
Border temperature has a bottom electricity of mapping relations, and the bottom electricity makes the battery can under the environment temperature for expression
Minimum electricity；
The dump energy of the battery is obtained, and judges the dump energy whether less than the bottom electricity；
If the dump energy is less than the bottom electricity, the state-of-charge SOC of the battery is defined as 0.
Preferably, methods described also includes：
If the dump energy is not less than the bottom electricity, volume of the battery under the environment temperature is obtained
Determine electricity；
According to specified electric quantity of the battery under the environment temperature, the SOC of the battery is determined.
Preferably, the specified electric quantity for obtaining the battery under the environment temperature, including：
Obtain maximum rated electricity of the battery in preset temperature range；
By the maximum rated electricity and the difference of the bottom electricity, it is defined as the battery under the temperature environment
Specified electric quantity.
Preferably, the specified electric quantity according to the battery under the environment temperature, determines the SOC of the battery,
Including：
The difference of the dump energy and the bottom electricity is calculated, it is available under the environment temperature as the battery
Electricity；
The ratio of available power of the battery under the environment temperature and specified electric quantity is calculated, and the ratio is true
It is set to the SOC of the battery.
It is preferably, described from advance for the mapping relations between the environment temperature and bottom electricity of battery configuration,
Before acquisition has the bottom electricity of mapping relations with the environment temperature, also include：
Obtain maximum rated electricity of the battery in preset temperature range；
Specified electric quantity of the battery under each environment temperature is obtained respectively；
The difference of the specified electric quantity of the maximum rated electricity and the battery under each environment temperature is calculated respectively, as
Bottom electricity of the battery under each environment temperature；
Bottom electricity according to the battery under each environment temperature, is the battery configuration surroundings temperature and bottom electricity
Mapping relations between amount.
Present invention also offers a kind of determining device of the state-of-charge of battery, described device includes：
First acquisition module, for obtaining the environment temperature that battery is presently in；
Second acquisition module, for from advance for the mapping between the environment temperature and bottom electricity of battery configuration is closed
In system, acquisition has the bottom electricity of mapping relations with the environment temperature, and the bottom electricity makes the battery for expression
The available minimum electricity under the environment temperature；
3rd acquisition module, the dump energy for obtaining the battery；
Judge module, for judging the dump energy whether less than the bottom electricity；
First determining module, it is during for the result in the judge module to be, the state-of-charge SOC of the battery is true
It is set to 0.
Preferably, described device also includes：
4th acquisition module, for when the result of the judge module is no, obtaining the battery in the environment temperature
Specified electric quantity under degree；
Second determining module, for the specified electric quantity according to the battery under the environment temperature, determines the battery
SOC.
Preferably, the 4th acquisition module, including：
First acquisition submodule, for obtaining maximum rated electricity of the battery in preset temperature range；
First determination sub-module, for by the difference of the maximum rated electricity and the bottom electricity, being defined as the electricity
Specified electric quantity of the pond under the temperature environment.
Preferably, second determining module, including：
Second computation subunit, the difference for calculating the dump energy and the bottom electricity, exists as the battery
Available power under the environment temperature；
3rd computation subunit, for calculating available power of the battery under the environment temperature with specified electric quantity
Ratio；
3rd determination sub-module, the SOC for the ratio to be defined as the battery.
Preferably, described device also includes：
5th acquisition module, for obtaining maximum rated electricity of the battery in preset temperature range；
6th acquisition module, for obtaining specified electric quantity of the battery under each environment temperature respectively；
Computing module, it is specified under each environment temperature with the battery for calculating the maximum rated electricity respectively
The difference of electricity, the bottom electricity as the battery under each environment temperature；
Configuration module, is the battery configuration ring for the bottom electricity according to the battery under each environment temperature
Mapping relations between border temperature and bottom electricity.
The invention provides a kind of determination method and device of the state-of-charge of battery, using the surplus of battery in methods described
Compared with remaining electricity is presently in the corresponding bottom electricity of environment temperature with the battery, if dump energy is less than bottom electricity
Amount, if then illustrating that now the battery is discharged with constant current I, because DC internal resistance very conference reaches electric discharge cut-off electricity immediately
Pressure, that is to say, that the battery can not put electricity now.For above-mentioned situation, the SOC of the battery is defined as 0, standard by the present invention
Really provide a user with the real state-of-charge of the battery.
In addition, when the dump energy of battery is not less than bottom electricity, present invention also contemplates that environment temperature is to battery
The influence that SOC determines, compared with prior art, it is true under current environmental temperature that the present invention can provide the user battery
SOC。
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, below will be to make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is a kind of determination method flow diagram of the state-of-charge of battery provided in an embodiment of the present invention；
Fig. 2 is a kind of mapping relations between battery configuration surroundings temperature and bottom electricity provided in an embodiment of the present invention
Method flow diagram；
Fig. 3 is the determination method flow diagram of the state-of-charge of another battery provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of the determining device of the state-of-charge of battery provided in an embodiment of the present invention；
Fig. 5 is the structural representation of the determining device of the state-of-charge of another battery provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
It is a kind of determination method flow diagram of the state-of-charge of battery provided in an embodiment of the present invention, the side with reference to Fig. 1
Method can specifically include：
S101：Obtain the environment temperature that battery is presently in.
The state-of-charge SOC of battery provided in an embodiment of the present invention determines the environment temperature that method is presently in view of battery
The influence to SOC is spent, the environment temperature that battery is presently in is obtained for the device of measurement temperature first with thermistor etc..
In addition, the SOC in the embodiment of the present invention is generally used for representing the ability of battery present discharge, span is 0-1,
Represent that battery discharge completely, represents that battery is completely filled with as SOC=1 as SOC=0.
S102：From in advance be the battery configuration environment temperature and bottom electricity between mapping relations in, obtain with
The environment temperature has the bottom electricity of mapping relations.
The bottom electricity makes the battery available minimum electricity under the environment temperature for expression, that is,
Say, under the environment temperature, if the dump energy of the battery is less than the bottom electricity, the battery then cannot
Electric discharge, i.e., can not be used.
It is in advance the mapping relations between the battery configuration surroundings temperature and bottom electricity in the embodiment of the present invention, leads to
Mapping relations between the environment temperature and bottom electricity of often configuration are applied to the battery for belonging to same model with the battery, such as
AAAA size batteries.Then, in the mapping relations between the battery configuration surroundings temperature and bottom electricity, inquiry with it is described
Environment temperature has the bottom electricity of mapping relations.
Specifically, the embodiment of the invention provides a kind of mapping between battery configuration surroundings temperature and bottom electricity closing
The method of system, is a kind of method flow of the mapping relations between battery configuration surroundings temperature and bottom electricity with reference to Fig. 2
Figure.Methods described is specifically included：
S201：Obtain maximum rated electricity of the battery in preset temperature range.
Specified electric quantity is electricity of the battery in the state of electricity is completely filled with.Usual each type of battery has it can
The temperature of normal work, in 0-40 degree as the operating temperature of lithium battery.The embodiment of the present invention being capable of normal work using battery
Temperature range described in the temperature setting of work.
In addition, by the charge-discharge test to battery, obtaining maximum rated electricity of the battery in temperature range.Example
Such as, specified electric quantity of the battery in the environment temperature in 30 degree is 40.3Ah, volume when in other environment temperatures
Determine electricity and be respectively less than 40.3Ah, then the maximum rated electricity by the battery in preset temperature range is defined as 40.3Ah.
S202：Specified electric quantity of the battery under each environment temperature is obtained respectively.
In addition, by carrying out discharge and recharge in each environment temperature to battery, obtaining the battery in each environment temperature
Under specified electric quantity.
S203：Calculate respectively specified electric quantity of the maximum rated electricity with the battery under each environment temperature it
Difference, the bottom electricity as the battery under each environment temperature.
Because bottom electricity makes the battery available minimum electricity under the environment temperature for expression, the present invention is real
The difference of specified electric quantity of the example by the maximum rated electricity and the battery of the battery under any temperature environment is applied, as described
Bottom electricity of the battery under the environment temperature.
S204：Bottom electricity according to the battery under each environment temperature is the battery configuration surroundings temperature with
Mapping relations between the electricity of bottom.
It is the battery configuration surroundings temperature after being calculated bottom electricity of the battery under each environment temperature
Mapping relations between degree and bottom electricity, to be subsequently used for inquiry.
S103：Obtain the dump energy of the battery.
Specifically, can be by ampere-hour summation, the method such as Kalman filtering method obtains the dump energy of the battery.
It is worth noting that, S103 can be performed before S101, S102, S103 execution sequences need not be limited herein.
S104：Whether the dump energy is judged less than the bottom electricity, if it is, performing S105.
S105：If the dump energy is less than the bottom electricity, the state-of-charge SOC of the battery is defined as
0。
Due to the different bottom electricity of varying environment temperature correspondence, dump energy and institute of the embodiment of the present invention using battery
State battery and be presently in the corresponding bottom electricity of environment temperature and compare, if dump energy is less than bottom electricity, illustrate this
Battery described in Shi Ruguo is discharged with constant current I, because DC internal resistance very conference reaches discharge cut-off voltage immediately, that is to say, that
The battery can not put electricity now.The embodiment of the present invention be directed to above-mentioned situation, the SOC of the battery is defined as 0, accurately to
Family provides the real state-of-charge of battery.
It is the determination method flow diagram of the state-of-charge of another battery provided in an embodiment of the present invention with reference to Fig. 3, it is described
Method can specifically include：
S301：Obtain the environment temperature that battery is presently in；
S302：From in advance be the battery configuration environment temperature and bottom electricity between mapping relations in, obtain with
The environment temperature has the bottom electricity of mapping relations, and the bottom electricity makes the battery in the environment temperature for expression
Available minimum electricity under degree；
S303：Obtain the dump energy of the battery.
S304：Whether the dump energy is judged less than the bottom electricity, if it is, performing S305, otherwise, is performed
S306。
S305：If the dump energy is less than the bottom electricity, the state-of-charge SOC of the battery is defined as
0。
The implementation procedure of S301-S305 is identical with above-mentioned S101-S105, will not be repeated here.
S306：If the dump energy is not less than the bottom electricity, the battery is obtained in the environment temperature
Under specified electric quantity.
Because the dump energy is not less than the bottom electricity, the environment that the SOC of the battery is also presently in by it
The influence of temperature, so, the embodiment of the present invention needs to obtain specified electric quantity of the battery under the environment temperature.
In a kind of implementation, by carrying out discharge and recharge under the environment temperature to the battery, the battery is obtained
Specified electric quantity under the environment temperature, i.e., described battery is completely filled with electricity during electricity.
In another implementation, maximum rated electricity of the battery in preset temperature range is obtained first, due to
The battery is got in the corresponding bottom electricity of the environment temperature, by the maximum rated electricity and bottom electricity
The difference of amount is defined as specified electric quantity of the battery under the temperature environment.
S307：According to specified electric quantity of the battery under the environment temperature, the SOC of the battery is determined.
In order to further improve the accuracy of the determination result of the SOC of battery, the embodiment of the invention provides a kind of real
Existing mode, specifically：
First, the difference of the dump energy and the bottom electricity is calculated, as the battery under the environment temperature
Available power.Secondly, the ratio of the available power of the battery under the environment temperature and specified electric quantity is calculated, and by institute
State the SOC that ratio is defined as the battery.
It can be seen that, the specified electric quantity that the embodiment of the present invention has considered not only battery is influenceed by environment temperature, it is also contemplated that
It is determined that dump energy is also affected by the ambient temperature during the SOC of battery, so, method phase with prior art
Determination method than, the SOC of battery provided in an embodiment of the present invention can provide the user battery under current environmental temperature more
True SOC.
The embodiment of the present invention additionally provides a kind of determining device of the state-of-charge of battery, is implementation of the present invention with reference to Fig. 4
A kind of structural representation of the determining device of the state-of-charge of battery that example is provided, described device includes：
First acquisition module 401, for obtaining the environment temperature that battery is presently in；
Second acquisition module 402, for being reflecting between the environment temperature and bottom electricity of battery configuration from advance
Penetrate in relation, acquisition has the bottom electricity of mapping relations with the environment temperature, the bottom electricity makes described for expression
Battery available minimum electricity under the environment temperature；
3rd acquisition module 403, the dump energy for obtaining the battery；
Judge module 404, for judging the dump energy whether less than the bottom electricity；
First determining module 405, during for the result in the judge module to be, by the state-of-charge of the battery
SOC is defined as 0.
In order to when the dump energy is not less than the bottom electricity, determine that the result of the SOC of the battery is more accurate,
The embodiment of the present invention additionally provides a kind of determining device of the state-of-charge of battery.
It is the structural representation of the determining device of the state-of-charge of another battery provided in an embodiment of the present invention with reference to Fig. 5
Figure, described device not only includes the modules in Fig. 4, also including with lower module：
4th acquisition module 501, for when the result of the judge module is no, obtaining the battery in the environment
At a temperature of specified electric quantity；
Second determining module 502, for the specified electric quantity according to the battery under the environment temperature, determines the electricity
The SOC in pond.
Specifically, the 4th acquisition module, including：
First acquisition submodule, for obtaining maximum rated electricity of the battery in preset temperature range；
First determination sub-module, for by the difference of the maximum rated electricity and the bottom electricity, being defined as the electricity
Specified electric quantity of the pond under the temperature environment.
A kind of implementation, second determining module, including：
Second computation subunit, the difference for calculating the dump energy and the bottom electricity, exists as the battery
Available power under the environment temperature；
3rd computation subunit, for calculating available power of the battery under the environment temperature with specified electric quantity
Ratio；
3rd determination sub-module, the SOC for the ratio to be defined as the battery.
In addition, described device also includes：
5th acquisition module, for obtaining maximum rated electricity of the battery in preset temperature range；
6th acquisition module, for obtaining specified electric quantity of the battery under each environment temperature respectively；
Computing module, it is specified under each environment temperature with the battery for calculating the maximum rated electricity respectively
The difference of electricity, the bottom electricity as the battery under each environment temperature；
Configuration module, is the battery configuration ring for the bottom electricity according to the battery under each environment temperature
Mapping relations between border temperature and bottom electricity.
The determining device of the SOC of battery provided in an embodiment of the present invention, not only considers that the specified electric quantity of battery receives environment temperature
The influence of degree, it is also contemplated that it is determined that dump energy is also affected by the ambient temperature during the SOC of battery, it is and existing
The method of technology is compared, and the determining device of the SOC of battery provided in an embodiment of the present invention can provide the user battery current
True SOC under environment temperature.
For device embodiment, because it corresponds essentially to embodiment of the method, so related part is referring to method reality
Apply the part explanation of example.Device embodiment described above is only schematical, wherein described as separating component
The unit of explanation can be or may not be physically separate, and the part shown as unit can be or can also
It is not physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Selection some or all of module therein is needed to realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not
In the case of paying creative work, you can to understand and implement.
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.And, term " including ", "comprising" or its any other variant be 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 a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
A kind of determination method and device of the state-of-charge of the battery for being provided the embodiment of the present invention above has been carried out in detail
Thin to introduce, specific case used herein is set forth to principle of the invention and implementation method, and above example is said
It is bright to be only intended to help and understand the method for the present invention and its core concept；Simultaneously for those of ordinary skill in the art, foundation
Thought of the invention, will change in specific embodiments and applications, and in sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of determination method of the state-of-charge of battery, it is characterised in that methods described includes：
Obtain the environment temperature that battery is presently in；
From in advance for the mapping relations between the environment temperature and bottom electricity of battery configuration, obtain and the environment temperature
Bottom electricity of the degree with mapping relations, the bottom electricity makes the battery available under the environment temperature for expression
Minimum electricity；
The dump energy of the battery is obtained, and judges the dump energy whether less than the bottom electricity；
If the dump energy is less than the bottom electricity, the state-of-charge SOC of the battery is defined as 0.
2. the determination method of the state-of-charge of battery according to claim 1, it is characterised in that methods described also includes：
If the dump energy is not less than the bottom electricity, specified electricity of the battery under the environment temperature is obtained
Amount；
According to specified electric quantity of the battery under the environment temperature, the SOC of the battery is determined.
3. the determination method of the state-of-charge of battery according to claim 2, it is characterised in that the acquisition battery
Specified electric quantity under the environment temperature, including：
Obtain maximum rated electricity of the battery in preset temperature range；
By the maximum rated electricity and the difference of the bottom electricity, it is defined as the battery specified under the temperature environment
Electricity.
4. the determination method of the state-of-charge of the battery according to Claims 2 or 3, it is characterised in that described in the basis
Specified electric quantity of the battery under the environment temperature, determines the SOC of the battery, including：
Calculate the difference of the dump energy and the bottom electricity, as the battery under the environment temperature can electricity consumption
Amount；
The ratio of available power of the battery under the environment temperature and specified electric quantity is calculated, and the ratio is defined as
The SOC of the battery.
5. the determination method of the state-of-charge of battery according to claim 1, it is characterised in that described is described from advance
In mapping relations between the environment temperature and bottom electricity of battery configuration, acquisition has mapping relations with the environment temperature
Before the electricity of bottom, also include：
Obtain maximum rated electricity of the battery in preset temperature range；
Specified electric quantity of the battery under each environment temperature is obtained respectively；
The difference of the specified electric quantity of the maximum rated electricity and the battery under each environment temperature is calculated respectively, as described
Bottom electricity of the battery under each environment temperature；
Bottom electricity according to the battery under each environment temperature is the battery configuration surroundings temperature with bottom electricity it
Between mapping relations.
6. a kind of determining device of the state-of-charge of battery, it is characterised in that described device includes：
First acquisition module, for obtaining the environment temperature that battery is presently in；
Second acquisition module, for being the mapping relations between the environment temperature and bottom electricity of battery configuration from advance
In, acquisition has the bottom electricity of mapping relations with the environment temperature, and the bottom electricity makes the battery exist for expression
Available minimum electricity under the environment temperature；
3rd acquisition module, the dump energy for obtaining the battery；
Judge module, for judging the dump energy whether less than the bottom electricity；
First determining module, during for the result in the judge module to be, the state-of-charge SOC of the battery is defined as
0。
7. the determining device of the state-of-charge of battery according to claim 6, it is characterised in that described device also includes：
4th acquisition module, for when the result of the judge module is no, the acquisition battery to be under the environment temperature
Specified electric quantity；
Second determining module, for the specified electric quantity according to the battery under the environment temperature, determines the battery
SOC。
8. the determining device of the state-of-charge of battery according to claim 7, it is characterised in that the described 4th obtains mould
Block, including：
First acquisition submodule, for obtaining maximum rated electricity of the battery in preset temperature range；
First determination sub-module, for by the difference of the maximum rated electricity and the bottom electricity, being defined as the battery and existing
Specified electric quantity under the temperature environment.
9. the determining device of the state-of-charge of the battery according to claim 7 or 8, it is characterised in that described second determines
Module, including：
Second computation subunit, the difference for calculating the dump energy and the bottom electricity, as the battery described
Available power under environment temperature；
3rd computation subunit, the ratio for calculating available power and specified electric quantity of the battery under the environment temperature
Value；
3rd determination sub-module, the SOC for the ratio to be defined as the battery.
10. the determining device of the state-of-charge of battery according to claim 6, it is characterised in that described device also includes：
5th acquisition module, for obtaining maximum rated electricity of the battery in preset temperature range；
6th acquisition module, for obtaining specified electric quantity of the battery under each environment temperature respectively；
Computing module, for calculating specified electric quantity of the maximum rated electricity with the battery under each environment temperature respectively
Difference, the bottom electricity as the battery under each environment temperature；
Configuration module, is the battery configuration surroundings temperature for the bottom electricity according to the battery under each environment temperature
Mapping relations between degree and bottom electricity.
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| CN113394468A (en) * | 2021-06-10 | 2021-09-14 | 苏州阳光动力电子科技有限公司 | Battery management method and related components thereof |
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