CN110018420A - Battery remaining power estimating system and battery remaining power estimation method - Google Patents
Battery remaining power estimating system and battery remaining power estimation method Download PDFInfo
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- CN110018420A CN110018420A CN201910377170.4A CN201910377170A CN110018420A CN 110018420 A CN110018420 A CN 110018420A CN 201910377170 A CN201910377170 A CN 201910377170A CN 110018420 A CN110018420 A CN 110018420A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 17
- 230000015556 catabolic process Effects 0.000 claims description 17
- 238000006731 degradation reaction Methods 0.000 claims description 17
- 229910001416 lithium ion Inorganic materials 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- 229910052987 metal hydride Inorganic materials 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 3
- 230000014509 gene expression Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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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]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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Abstract
The present invention provides a kind of battery remaining power estimating system and estimation method.Module, the voltage detection module, for detecting busbar voltage that the battery is exported and sending it to the capacity estimation module are obtained including controller, voltage detection module, capacity estimation module and electric current；The electric current obtains module, for operating current needed for obtaining the load and sends it to the capacity estimation module；The capacity estimation module calculates the dump energy for determining the battery for the operating current according to needed for the busbar voltage of the battery and the load；And the capacity estimation module, it is also used to control the on-off of the controller according to the dump energy of the battery.It may insure that battery in the process of running to bearing power stable power-supplying, while can estimate the residual capacity of battery, obtain remaining battery service life.
Description
Technical field
The invention belongs to battery estimating system technical fields, and in particular to a kind of battery remaining power estimating system and one kind
Battery remaining power estimation method.
Background technique
Lithium ion battery has energy density high, it is easy to accomplish the features such as powering to nonlinear load in electric car, is mixed
Closing the application fields such as power vehicle and fuel cell car has good prospect.
Although lithium ion battery has above-mentioned advantage, the sensitivity to parameter of lithium ion battery is stronger, to high-power negative
It carries when dynamic supplies and is difficult to estimate its residual capacity, for lithium ion battery, how to give full play to the excellent of lithium ion battery
Gesture can estimate lithium ion battery residual capacity while reaching in the process of running to bearing power stable power-supplying, obtain lithium
Ion battery remaining life is the technical problem that those skilled in the art are facing.
In order to estimate lithium ion battery while guaranteeing that lithium ion battery can adapt to high power load stable power-supplying
Residual capacity, obtain lithium ion battery remaining life,
It needs to design a residual capacity estimating system for above-mentioned lithium ion battery.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, a kind of battery remaining power is provided and is estimated
Meter systems and a kind of battery remaining power estimation method.
The first aspect of the present invention provides a kind of battery remaining power estimating system, comprising:
Controller, the input terminal of the controller are electrically connected with the output end of battery, and the output end of the controller is used for
It is electrically connected with load；
Voltage detection module, the input terminal of the voltage detection module are electrically connected with the output end of the battery；
Capacity estimation module, the input terminal of the capacity estimation module and the output end of the voltage detection module are electrically connected
It connects, the output end of the capacity estimation module is electrically connected with the input terminal of the controller；
Electric current obtains module, and the input terminal that the electric current obtains module is used to be electrically connected with the load, and the electric current obtains
The output end of modulus block is electrically connected with the input terminal of the capacity estimation module；Wherein,
The voltage detection module, for detecting busbar voltage that the battery is exported and sending it to the capacity
Estimation module；
The electric current obtains module, for operating current needed for obtaining the load and sends it to the capacity and estimates
Count module；
The capacity estimation module, for the operating current according to needed for the busbar voltage of the battery and the load,
Calculate the dump energy for determining the battery；And
The capacity estimation module is also used to control the on-off of the controller according to the dump energy of the battery.
Optionally, the capacity estimation module includes output energy balane submodule, state-of-charge computational submodule and remains
Covolume meter operator module, the output energy balane submodule and the voltage detection module, the electric current obtain module and
The state-of-charge computational submodule is electrically connected, the residual capacity computational submodule and the state-of-charge computational submodule
It is electrically connected；Wherein,
The output energy budget submodule, for the work according to needed for the busbar voltage of the battery and the load
The output energy of the battery is calculated in electric current；
The battery is calculated for the output energy according to the battery in the state-of-charge computational submodule
State-of-charge；
The battery is calculated for the state-of-charge according to the battery in the residual capacity computational submodule
Residual capacity.
Optionally, the residual capacity of the battery meets following relational expressions:
Cu=Ci-D(t)Ci；
Wherein, CuFor the residual capacity of the battery, CiFor the initial capacity of the battery, D (t) is the appearance of the battery
Measure degradation factor.
Optionally, the degradation in capacity factor of the battery meets following relational expressions:
Wherein, SOC (t) is the state-of-charge of the battery, SOCrefIt (t) is the state-of-charge reference value of different moments, T
For SOCref(t) average time of state-of-charge reference, s are degradation factor coefficient.
Optionally, the battery includes lithium ion battery, lead-acid battery, nickel-metal hydride battery, ternary battery or graphene battery.
The second aspect of the present invention, provides a kind of battery remaining power estimation method, and battery is mentioned by controller to load
For exporting electric current, residual capacity estimation method includes:
Step S110, the busbar voltage that the battery is exported is detected；
Step S120, operating current needed for obtaining the load；
Step S130, the operating current according to needed for the busbar voltage of the battery and the load calculates described in determining
The dump energy of battery；
Step S140, the on-off of the controller is controlled according to the dump energy of the battery.
Optionally, step S130 is specifically included:
According to operating current needed for the busbar voltage of the battery and the load, the output of the battery is calculated
Energy；
According to the output energy of the battery, the state-of-charge of the battery is calculated；
According to the state-of-charge of the battery, the residual capacity of the battery is calculated.
Optionally, the residual capacity of the battery meets following relational expressions:
Cu=Ci-D(t)Ci；
Wherein, CuFor the residual capacity of the battery, CiFor the initial capacity of the battery, D (t) is the appearance of the battery
Measure degradation factor.
Optionally, the degradation in capacity factor of the battery meets following relational expressions:
Wherein, SOC (t) is the state-of-charge of the battery, SOCrefIt (t) is the state-of-charge reference value of different moments, T
For SOCref(t) average time of state-of-charge reference, s are degradation factor coefficient.
Optionally, the battery include lithium ion battery, lead-acid battery, nickel-metal hydride battery,
Ternary battery or graphene battery.
Battery remaining power estimating system of the invention and estimation method.It detects the bus that the battery is exported first
Operating current needed for voltage and the acquisition load, secondly, according to needed for the busbar voltage of the battery and the load
Operating current, calculate the dump energy for determining the battery.Finally, controlling the control according to the dump energy of the battery
The on-off of device.It may insure that battery in the process of running to bearing power stable power-supplying, while can estimate that the remaining of battery is held
Amount obtains remaining battery service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the battery remaining power estimating system of first embodiment of the invention；
Fig. 2 is the structural schematic diagram of the battery remaining power estimating system of second embodiment of the invention；
Fig. 3 is the flow chart of the battery remaining power estimation method of third embodiment of the invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.
As shown in Figure 1, the first aspect of the present invention, is related to a kind of battery remaining power estimating system 100, the residual capacity
Estimating system 100 includes that controller 110, voltage detection module 120, capacity estimation module 130 and electric current obtain module 140.Its
In, the input terminal of the controller 110 is electrically connected with the output end of battery 200, the output end of the controller 110 and load
300 electrical connections.The input terminal of the voltage detection module 120 is electrically connected with the output end of the battery 200.The capacity estimation
The input terminal of module 130 is electrically connected with the output end of the voltage detection module 120, the output of the capacity estimation module 130
End is electrically connected with the input terminal of the controller 110.The electric current obtains the input terminal of module 140 and the load 300 is electrically connected
It connects, the output end that the electric current obtains module 140 is electrically connected with the input terminal of the capacity estimation module 130.
Wherein, the voltage detection module 120, for detecting busbar voltage that the battery 200 is exported and being sent out
It send to the capacity estimation module 130.The electric current obtains module 140, for operating current needed for obtaining the load 300
And send it to the capacity estimation module 130.The capacity estimation module 130, for the bus according to the battery 200
Operating current needed for voltage and the load 300, calculates the dump energy for determining the battery 200.The capacity estimation mould
Block 130 is also used to control the on-off of the controller 110 according to the dump energy of the battery 200.
The battery remaining power estimating system 100 of the present embodiment is estimated by set voltage detection module 120, capacity
It counts module 130 and electric current and obtains module 140, it can be ensured that battery is in the process of running to bearing power stable power-supplying, while energy
The residual capacity for enough estimating battery, obtains remaining battery service life.
As shown in Fig. 2, the capacity estimation module 130 includes output energy balane submodule 131, state-of-charge calculating
Module 132 and residual capacity computational submodule 133.The output energy balane submodule 131 and the voltage detection module
120, the electric current obtains module 140 and the state-of-charge computational submodule 132 is electrically connected, and the residual capacity calculates son
Module 133 is electrically connected with the state-of-charge computational submodule 132.The output energy budget submodule 131 is used for basis
Operating current needed for the busbar voltage of the battery 200 and the load 300, is calculated the output energy of the battery 200
Amount.The battery is calculated for the output energy according to the battery 200 in the state-of-charge computational submodule 132
200 state-of-charge.The residual capacity computational submodule 133 is calculated for the state-of-charge according to the battery 200
To the residual capacity of the battery 200.
The battery remaining power estimating system 100 of the present embodiment, capacity estimation module 130 include output energy meter operator
Module 131, state-of-charge computational submodule 132 and residual capacity computational submodule 133 pass through the busbar voltage of battery 200
With operating current needed for the load 300, the output energy of the battery 200 is calculated, and according to the battery 200
Energy is exported, the state-of-charge of the battery 200 is calculated, finally according to the state-of-charge of the battery 200, is calculated
The residual capacity of the battery 200 can determine the residual capacity of battery 200, more accurately so as to according to battery 200
Residual capacity control controller 110 turn on and off, effectively improve the service life of battery 200, be suitable for bearing power
The application of stable power-supplying.
Optionally, the residual capacity of the battery meets following relational expressions:
Cu=Ci-D(t)Ci；
Wherein, CuFor the residual capacity of the battery, CiFor the initial capacity of the battery, D (t) is the appearance of the battery
Measure degradation factor.
Optionally, the degradation in capacity factor of the battery meets following relational expressions:
Wherein, SOC (t) is the state-of-charge of the battery, SOCrefIt (t) is the state-of-charge reference value of different moments, T
For SOCref(t) average time of state-of-charge reference, s are degradation factor coefficient, and degradation factor coefficient s is according to battery electrochemical
Performance determines.
Optionally, the battery includes lithium ion battery, lead-acid battery, nickel-metal hydride battery, ternary battery or graphene battery.
The second aspect of the present invention, as shown in figure 3, providing a kind of battery remaining power estimation method S100, which holds
Amount estimation method S100 can be adapted for the residual capacity estimating system 100 recorded above, specifically can be with reference to related note above
It carries, therefore not to repeat here.Battery provides output electric current to load by controller, and residual capacity estimation method S100 includes:
Step S110, the busbar voltage that the battery is exported is detected；
Step S120, operating current needed for obtaining the load；
Step S130, the operating current according to needed for the busbar voltage of the battery and the load calculates described in determining
The dump energy of battery；
Step S140, the on-off of the controller is controlled according to the dump energy of the battery.
The battery remaining power estimation method S100 of the present embodiment, detects the busbar voltage that the battery is exported first
And operating current needed for obtaining the load, secondly, the work according to needed for the busbar voltage of the battery and the load
Make electric current, calculates the dump energy for determining the battery.Finally, controlling the controller according to the dump energy of the battery
On-off.It may insure that battery in the process of running to bearing power stable power-supplying, while can estimate the residual capacity of battery, obtain
Take remaining battery service life.
Optionally, step S130 is specifically included:
According to operating current needed for the busbar voltage of the battery and the load, the output of the battery is calculated
Energy；
According to the output energy of the battery, the state-of-charge of the battery is calculated；
According to the state-of-charge of the battery, the residual capacity of the battery is calculated.
Optionally, the residual capacity of the battery meets following relational expressions:
Cu=Ci-D(t)Ci；
Wherein, CuFor the residual capacity of the battery, CiFor the initial capacity of the battery, D (t) is the appearance of the battery
Measure degradation factor.
Optionally, the degradation in capacity factor of the battery meets following relational expressions:
Wherein, SOC (t) is the state-of-charge of the battery, SOCrefIt (t) is the state-of-charge reference value of different moments, T
For SOCref(t) average time of state-of-charge reference, s are degradation factor coefficient.
Optionally, the battery includes lithium ion battery, lead-acid battery, nickel-metal hydride battery, ternary battery or graphene battery.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of battery remaining power estimating system characterized by comprising
Controller, the input terminal of the controller are electrically connected with the output end of battery, and the output end of the controller is used for and bears
Carry electrical connection；
Voltage detection module, the input terminal of the voltage detection module are electrically connected with the output end of the battery；
Capacity estimation module, the input terminal of the capacity estimation module are electrically connected with the output end of the voltage detection module, institute
The output end for stating capacity estimation module is electrically connected with the input terminal of the controller；
Electric current obtains module, and the input terminal that the electric current obtains module is used to be electrically connected with the load, and the electric current obtains mould
The output end of block is electrically connected with the input terminal of the capacity estimation module；Wherein,
The voltage detection module, for detecting busbar voltage that the battery is exported and sending it to the capacity estimation
Module；
The electric current obtains module, for operating current needed for obtaining the load and sends it to the capacity estimation mould
Block；
The capacity estimation module is calculated for the operating current according to needed for the busbar voltage of the battery and the load
Determine the dump energy of the battery；And
The capacity estimation module is also used to control the on-off of the controller according to the dump energy of the battery.
2. estimating system according to claim 1, which is characterized in that the capacity estimation module includes output energy balane
Submodule, state-of-charge computational submodule and residual capacity computational submodule, the output energy balane submodule and the electricity
Pressure detection module, the electric current obtain module and the state-of-charge computational submodule is electrically connected, and the residual capacity calculates
Submodule is electrically connected with the state-of-charge computational submodule；Wherein,
The output energy budget submodule, for the electricity of the work according to needed for the busbar voltage of the battery and the load
Stream, is calculated the output energy of the battery；
The charged of the battery is calculated for the output energy according to the battery in the state-of-charge computational submodule
State；
The residue of the battery is calculated for the state-of-charge according to the battery in the residual capacity computational submodule
Capacity.
3. estimating system according to claim 1 or 2, which is characterized in that the residual capacity of the battery meets following passes
It is formula:
Cu=Ci-D(t)Ci；
Wherein, CuFor the residual capacity of the battery, CiFor the initial capacity of the battery, D (t) is that the capacity of the battery moves back
Change the factor.
4. estimating system according to claim 3, which is characterized in that the degradation in capacity factor of the battery meets following passes
It is formula:
Wherein, SOC (t) is the state-of-charge of the battery, SOCrefIt (t) is the state-of-charge reference value of different moments, T is
SOCref(t) average time of state-of-charge reference, s are degradation factor coefficient.
5. estimating system according to claim 1 or 2, which is characterized in that the battery includes lithium ion battery, plumbic acid electricity
Pond, nickel-metal hydride battery, ternary battery or graphene battery.
6. a kind of battery remaining power estimation method, battery provides output electric current to load by controller, which is characterized in that surplus
Covolume amount estimation method includes:
Step S110, the busbar voltage that the battery is exported is detected；
Step S120, operating current needed for obtaining the load；
Step S130, the operating current according to needed for the busbar voltage of the battery and the load calculates and determines the battery
Dump energy；
Step S140, the on-off of the controller is controlled according to the dump energy of the battery.
7. estimation method according to claim 6, which is characterized in that step S130 is specifically included:
According to operating current needed for the busbar voltage of the battery and the load, the output energy of the battery is calculated
Amount；
According to the output energy of the battery, the state-of-charge of the battery is calculated；
According to the state-of-charge of the battery, the residual capacity of the battery is calculated.
8. estimation method according to claim 6 or 7, which is characterized in that the residual capacity of the battery meets following passes
It is formula:
Cu=Ci-D(t)Ci；
Wherein, CuFor the residual capacity of the battery, CiFor the initial capacity of the battery, D (t) is that the capacity of the battery moves back
Change the factor.
9. estimation method according to claim 8, which is characterized in that the degradation in capacity factor of the battery meets following passes
It is formula:
Wherein, SOC (t) is the state-of-charge of the battery, SOCrefIt (t) is the state-of-charge reference value of different moments, T is
SOCref(t) average time of state-of-charge reference, s are degradation factor coefficient.
10. estimation method according to claim 6 or 7, which is characterized in that the battery includes lithium ion battery, plumbic acid
Battery, nickel-metal hydride battery, ternary battery or graphene battery.
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| CN110517459B (en) * | 2019-08-28 | 2022-09-16 | 广东好太太科技集团股份有限公司 | Motor protection control circuit and method for clothes airing machine |
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