CN109884529A - A kind of power battery for hybrid electric vehicle remaining capacity calculation method - Google Patents
A kind of power battery for hybrid electric vehicle remaining capacity calculation method Download PDFInfo
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- CN109884529A CN109884529A CN201910211449.5A CN201910211449A CN109884529A CN 109884529 A CN109884529 A CN 109884529A CN 201910211449 A CN201910211449 A CN 201910211449A CN 109884529 A CN109884529 A CN 109884529A
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- power battery
- battery
- remaining capacity
- electric vehicle
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Abstract
The invention discloses a kind of power battery for hybrid electric vehicle remaining capacity calculation methods, comprising the following steps: S1: reading data and storage；S2: add operation process；S3: condition judgement；S4: selection switch；S5: signal input；S6: the limitation of saturation degree up and down of signal value；S7: data output storage; invention is stored by using reading data and storage-add operation process-condition judgement-selection switch-signal input-signal value saturation degree up and down limitation-data output; monitor power battery electricity in real time; the charge and discharge of power battery are calculated by algorithm; prevent power battery occur overcharging or over-discharge and influence the power battery service life; power battery is protected as much as possible, it is allowed to play optimal service performance.
Description
Technical field
The invention belongs to Development of HEV Technology fields, and in particular to a kind of remaining electricity of power battery for hybrid electric vehicle
Measure calculation method.
Background technique
Battery management system is the power battery control system used on a kind of hybrid vehicle or pure electric automobile,
It is controlled according to parameter, performance of the vehicle demand to power battery various aspects.Battery management system is between battery and user
Bridge, main control object is secondary cell, final target be just to be able to improve battery service efficiency, prevent
Only excessive charge and discharge occur for battery, as much as possible protection power battery, it is allowed to play maximum service performance.Battery management system
Including hardware and program two parts, wherein program part is made of various control algolithms.
Power battery when in use, power battery be easy to appear overcharge or over-discharge and influence the feelings in power battery service life
Condition now lacks the method that a kind of pair of power battery for hybrid electric vehicle remaining capacity is calculated, to monitor power battery in real time
Electricity calculates the charge and discharge of power battery by algorithm, prevent power battery occur overcharging or over-discharge and influence power battery
Service life.
For this purpose, it is proposed that a kind of power battery for hybrid electric vehicle remaining capacity calculation method.
Summary of the invention
The purpose of the present invention is to provide a kind of power battery for hybrid electric vehicle remaining capacity calculation method, real time monitorings
Power battery electricity calculates the charge and discharge of power battery by algorithm, prevent power battery occur overcharging or over-discharge and influence
Power battery service life, as much as possible protection power battery, it is allowed to play optimal service performance, to solve in above-mentioned background technique
It is proposed the problems of the prior art.
To achieve the above object, present invention employs following technical solutions: a kind of power battery for hybrid electric vehicle is remaining
Electricity calculation method, comprising the following steps:
S1: reading data and storage read data read command by starting to read to instruct, then data read command is read
Data output instruction carries out the reading and storage of data；
S2: two signal values of add operation process, input participate in add operation, obtain operation result according to add operation；
S3: condition judgement, operation result judge whether operation result meets condition after Rule of judgment: it is equal to 0 or 3,
Which operation process met, then continues next step operation from the process；
S4: selection switch, the operation result for meeting Rule of judgment enters selection switch, and carries out once sentencing for operation result again
It is disconnected, judge whether operation result meets condition: not equal to 0, if meeting output data above, otherwise exporting following data；
S5: signal input inputs charged electricity SOC signal value；
S6: the limitation of saturation degree up and down of signal value limits the saturation degree up and down of the signal value in S5, signal value is limited
Within the set range；
S7: data output storage exports charged electricity SOC numerical value by data output instruction, and counted by Pile_Soc
According to storage.
Preferably, the calculation formula of the charged electricity SOC are as follows:
SOCini=f(UO, T) and (1)
Wherein, SOCiniFor battery initial quantity of electricity, U0For the open-circuit voltage of battery, T is the temperature of battery.
Preferably, the calculation formula of charged electricity SOC when the vehicle is run are as follows:
SOC=SOCini+∫icη(T, SOC) dt- ∫ idDt-S(Ta, t) and (2)
Wherein, SOC is battery remaining capacity, icFor charging current, idFor discharge current, TaFor service time of battery,η(T,
SOC it is) charge efficiency, is the function of Current Temperatures and remaining capacity, S(Ta, t) be self discharge electricity, be mean temperature Ta and
The function of service time of battery.
Preferably, the charged electricity SOC and hybrid electric vehicle sail the relational expression of mileage are as follows:
Y=kx+b (3)
Wherein, y is the mileage travelled of electric car, km；X is SOC value of battery；K, b are coefficient.
A kind of technical effect and advantage of the invention: power battery for hybrid electric vehicle remaining capacity meter proposed by the present invention
Calculation method has the advantage that compared with prior art
1, the present invention is defeated by using reading data and storage-add operation process-condition judgement-selection switch-signal
Enter-the limitation of saturation degree up and down of signal value-data output storage, monitors power battery electricity in real time, power is calculated by algorithm
The charge and discharge of battery, prevent power battery occur overcharging or over-discharge and influence the power battery service life, protection power as much as possible
Battery allows it to play optimal service performance.
Detailed description of the invention
Fig. 1 is a kind of power battery for hybrid electric vehicle remaining capacity calculation method flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
Referring to Fig. 1, the present invention provides a kind of power battery for hybrid electric vehicle remaining capacity calculation methods, including with
Lower step:
S1: reading data and storage read data read command by starting to read to instruct, then data read command is read
Data output instruction carries out the reading and storage of data；
S2: two signal values of add operation process, input participate in add operation, obtain operation result according to add operation；
S3: condition judgement, operation result judge whether operation result meets condition after Rule of judgment: it is equal to 0 or 3,
Which operation process met, then continues next step operation from the process；
S4: selection switch, the operation result for meeting Rule of judgment enters selection switch, and carries out once sentencing for operation result again
It is disconnected, judge whether operation result meets condition: not equal to 0, if meeting output data above, otherwise exporting following data；
S5: signal input inputs charged electricity SOC signal value；
S6: the limitation of saturation degree up and down of signal value limits the saturation degree up and down of the signal value in S5, signal value is limited
Within the set range；
S7: data output storage exports charged electricity SOC numerical value by data output instruction, and counted by Pile_Soc
According to storage.
Specifically, the calculation formula of the charged electricity SOC are as follows:
SOCini=f(UO, T) and (1)
Wherein, SOCiniFor battery initial quantity of electricity, U0For the open-circuit voltage of battery, T is the temperature of battery.
Specifically, the calculation formula of the vehicle charged electricity SOC when running are as follows:
SOC=SOCini+∫icη(T, SOC) dt- ∫ idDt-S(Ta, t) and (2)
Wherein, SOC is battery remaining capacity, icFor charging current, idFor discharge current, TaFor service time of battery,η(T,
SOC it is) charge efficiency, is the function of Current Temperatures and remaining capacity, S(Ta, t) be self discharge electricity, be mean temperature Ta and
The function of service time of battery.
Specifically, the charged electricity SOC and hybrid electric vehicle sail the relational expression of mileage are as follows:
Y=kx+b (3)
Wherein, y is the mileage travelled of electric car, km；X is SOC value of battery；K, b are coefficient.
In summary: the present invention is opened by using reading data and storage-add operation process-condition judgement-selection
Pass-signal input-signal value saturation degree up and down limitation-data output storage, monitors power battery electricity in real time, passes through calculation
Method calculates the charge and discharge of power battery, prevent power battery occur overcharging or over-discharge and influence the power battery service life, as far as possible
Power battery is protected on ground, it is allowed to play optimal service performance.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of power battery for hybrid electric vehicle remaining capacity calculation method, it is characterised in that: the following steps are included:
S1: reading data and storage read data read command by starting to read to instruct, then data read command is read
Data output instruction carries out the reading and storage of data；
S2: two signal values of add operation process, input participate in add operation, obtain operation result according to add operation；
S3: condition judgement, operation result judge whether operation result meets condition after Rule of judgment: it is equal to 0 or 3,
Which operation process met, then continues next step operation from the process；
S4: selection switch, the operation result for meeting Rule of judgment enters selection switch, and carries out once sentencing for operation result again
It is disconnected, judge whether operation result meets condition: not equal to 0, if meeting output data above, otherwise exporting following data；
S5: signal input inputs charged electricity SOC signal value；
S6: the limitation of saturation degree up and down of signal value limits the saturation degree up and down of the signal value in S5, signal value is limited
Within the set range；
S7: data output storage exports charged electricity SOC numerical value by data output instruction, and counted by Pile_Soc
According to storage.
2. a kind of power battery for hybrid electric vehicle remaining capacity calculation method according to claim 1, it is characterised in that:
The calculation formula of the charged electricity SOC are as follows:
SOCini=f(UO, T) and (1)
Wherein, SOCiniFor battery initial quantity of electricity, U0For the open-circuit voltage of battery, T is the temperature of battery.
3. a kind of power battery for hybrid electric vehicle remaining capacity calculation method according to claim 1, it is characterised in that:
The calculation formula of the vehicle charged electricity SOC when running are as follows:
SOC=SOCini+∫icη(T, SOC) dt- ∫ idDt-S(Ta, t) and (2)
Wherein, SOC is battery remaining capacity, icFor charging current, idFor discharge current, TaFor service time of battery,η(T,
SOC it is) charge efficiency, is the function of Current Temperatures and remaining capacity, S(Ta, t) be self discharge electricity, be mean temperature Ta and
The function of service time of battery.
4. a kind of power battery for hybrid electric vehicle remaining capacity calculation method according to claim 1, it is characterised in that:
The charged electricity SOC and hybrid electric vehicle sail the relational expression of mileage are as follows:
Y=kx+b (3)
Wherein, y is the mileage travelled of electric car, km；X is SOC value of battery；K, b are coefficient.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910211449.5A CN109884529A (en) | 2019-03-20 | 2019-03-20 | A kind of power battery for hybrid electric vehicle remaining capacity calculation method |
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| CN201910211449.5A CN109884529A (en) | 2019-03-20 | 2019-03-20 | A kind of power battery for hybrid electric vehicle remaining capacity calculation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111907373A (en) * | 2020-06-17 | 2020-11-10 | 汉腾汽车有限公司 | Charging method for dynamically adjusting charging current of electric automobile |
| CN112698224A (en) * | 2020-12-03 | 2021-04-23 | Oppo广东移动通信有限公司 | Remaining power estimation method, device, equipment and readable storage medium |
| CN113325325A (en) * | 2021-05-31 | 2021-08-31 | 东风商用车有限公司 | Method and system for calculating residual electric quantity of AGM storage battery of livestock and poultry vehicle |
-
2019
- 2019-03-20 CN CN201910211449.5A patent/CN109884529A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111907373A (en) * | 2020-06-17 | 2020-11-10 | 汉腾汽车有限公司 | Charging method for dynamically adjusting charging current of electric automobile |
| CN112698224A (en) * | 2020-12-03 | 2021-04-23 | Oppo广东移动通信有限公司 | Remaining power estimation method, device, equipment and readable storage medium |
| CN113325325A (en) * | 2021-05-31 | 2021-08-31 | 东风商用车有限公司 | Method and system for calculating residual electric quantity of AGM storage battery of livestock and poultry vehicle |
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Application publication date: 20190614 |
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