CN108051754A - Remaining capacity computational methods, device, system and the vehicle of vehicle lithium battery - Google Patents
Remaining capacity computational methods, device, system and the vehicle of vehicle lithium battery Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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Abstract
The invention discloses a kind of remaining capacity computational methods, device, system and the vehicle of vehicle lithium battery, wherein, method comprises the following steps：Detect current time；Obtain the renewal time in each electricity section of discharge electricity amount table；The electricity section to be modified of discharge electricity amount table is determined according to the renewal time of current time and each electricity section；Amendment is fitted to electricity section to be modified according to the data and curves of initial discharge voltameter, obtains updated discharge electricity amount table, to obtain the current residual electricity of lithium battery by updated discharge electricity amount table.This method can be fitted amendment according to the renewal time of current time and each electricity section to discharge electricity amount table, so as to accurately obtain the current residual electricity of lithium battery, the practicability of vehicle is effectively improved, and improves the reliability of vehicle, effectively promotes user's riding experience.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to a kind of remaining capacity computational methods of vehicle lithium battery,
Device, system and vehicle.
Background technology
In correlation technique, the energy management of pure electric vehicle is according to the statistical analysis of lithium battery charging and discharging ability, original
Reason is, by the rated capacity of electric automobile lithium battery and battery management unit BMU (Battery Management Unit, battery
Administrative unit) on SOC (State of Charge, state-of-charge) be multiplied and calculate remaining capacity.
However, correlation technique does not account for lithium battery in use, battery current capacities, environment, voltage and comprehensive
Influence of the conjunction ability for remaining capacity once remaining capacity changes, such as shows that electricity is more than actual amount, causes to be mistakenly considered
Electricity abundance, so as to influence normal use, reduces the practicability of vehicle without situation about charging in time；Or display electricity is small
In actual electricity, cause frequent charge, reduce the reliability of vehicle, reduce user's riding experience.
The content of the invention
It is contemplated that it solves at least some of the technical problems in related technologies.
For this purpose, first purpose of the present invention is to propose a kind of remaining capacity computational methods of vehicle lithium battery, the party
Method can accurately obtain the current residual electricity of lithium battery, effectively improve the practicability of vehicle, and improve the reliability of vehicle, have
Effect promotes user's riding experience.
Second object of the present invention is to propose a kind of remaining capacity computing device of vehicle lithium battery.
Third object of the present invention is to propose a kind of battery management system.
Fourth object of the present invention is to propose a kind of vehicle.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of remaining capacity calculating side of vehicle lithium battery
Method comprises the following steps：Detect current time；Obtain the renewal time in each electricity section of discharge electricity amount table；According to described
The renewal time in current time and each electricity section determines the electricity section to be modified of the discharge electricity amount table；According to first
The data and curves of beginning discharge electricity amount table are fitted amendment to the electricity section to be modified, obtain updated discharge electricity amount
Table, to obtain the current residual electricity of lithium battery by the updated discharge electricity amount table.
The remaining capacity computational methods of the vehicle lithium battery of the embodiment of the present invention, can be according to current time and each electricity
The renewal time in section is fitted amendment to discharge electricity amount table, is section so as to accurately obtain the current residual electricity of lithium battery
Prophesy course continuation mileage is powered system and occupant comfort system etc. for rational distribution electric energy, provides reliable input,
The practicability of vehicle is effectively improved, and improves the reliability of vehicle, effectively promotes user's riding experience.
In addition, the remaining capacity computational methods of vehicle lithium battery according to the above embodiment of the present invention can also have it is following
Additional technical characteristic：
Further, in one embodiment of the invention, the above method further includes：Establish the initial discharge electricity
Table；The discharge power of lithium battery output is sampled and integrated, to obtain each electricity in the initial discharge voltameter
The discharge electricity amount in section is measured, generates the discharge electricity amount table；The electric discharge is updated according to the present discharge electricity of the lithium battery
Voltameter, and record the renewal time in each electricity section.
Further, in one embodiment of the invention, before the initial discharge voltameter is established, including：It is right
The state-of-charge of the lithium battery carries out subregion according to default one step, to establish the discharge electricity amount according to division result
Table.
Further, in one embodiment of the invention, it is described that lithium is obtained by the updated discharge electricity amount table
The current residual electricity of battery, further comprises：Obtain the current state-of-charge of the lithium battery；According to the current charged shape
State obtains the electricity section for meeting preset condition；According to the electricity in the electricity section for meeting preset condition adds up to obtain
Current residual electricity.
Further, in one embodiment of the invention, the electricity section of the preset condition is described current charged
Electricity section residing for state and the electricity section below the residing electricity section.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of remaining capacity calculating of vehicle lithium battery
Device, including：Detection module, for detecting current time；First acquisition module, for obtaining each electricity of discharge electricity amount table
The renewal time in section；Module is confirmed, for being determined according to the renewal time of the current time and each electricity section
The electricity section to be modified of the discharge electricity amount table；Second acquisition module, according to the data and curves of initial discharge voltameter to institute
It states electricity section to be modified and is fitted amendment, obtain updated discharge electricity amount table, to pass through the updated electric discharge electricity
Scale obtains the current residual electricity of lithium battery.
The remaining capacity computing device of the vehicle lithium battery of the embodiment of the present invention, can be according to current time and each electricity
The renewal time in section is fitted amendment to discharge electricity amount table, is section so as to accurately obtain the current residual electricity of lithium battery
Prophesy course continuation mileage is powered system and occupant comfort system etc. for rational distribution electric energy, provides reliable input,
The practicability of vehicle is effectively improved, and improves the reliability of vehicle, effectively promotes user's riding experience.
In addition, the remaining capacity computing device of vehicle lithium battery according to the above embodiment of the present invention can also have it is following
Additional technical characteristic：
Further, in one embodiment of the invention, above device further includes：Module is established, it is described for establishing
Initial discharge voltameter；Generation module, the discharge power for being exported to the lithium battery is sampled and integrated, to obtain
The discharge electricity amount in each electricity section in initial discharge voltameter is stated, generates the discharge electricity amount table；Update module, for basis
The present discharge electricity of the lithium battery updates the discharge electricity amount table, and records the renewal time in each electricity section.
Further, in one embodiment of the invention, above device further includes：Division module, for the lithium
The state-of-charge of battery carries out subregion according to default one step, to establish the discharge electricity amount table according to division result.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of battery management system, including above-mentioned
The remaining capacity computing device of vehicle lithium battery.The system can be according to current time and the renewal time pair in each electricity section
Discharge electricity amount table is fitted amendment, so as to accurately obtain the current residual electricity of lithium battery, be science prophesy course continuation mileage,
System and occupant comfort system etc. are powered reasonably to distribute electric energy, reliable input is provided, effectively improves the reality of vehicle
With property, and the reliability of vehicle is improved, effectively promote user's riding experience.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of vehicle, including above-mentioned cell tube
Reason system.The vehicle can be fitted discharge electricity amount table according to the renewal time of current time and each electricity section and repair
Just, so as to accurately obtain the current residual electricity of lithium battery, it is the prophesy course continuation mileage of science, is rational distribution electric energy supply
Dynamical system and occupant comfort system etc. provide reliable input, effectively improve the practicability of vehicle, and improve the reliable of vehicle
Property, effectively promote user's riding experience.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart according to the remaining capacity computational methods of the vehicle lithium battery of one embodiment of the invention；And
Fig. 2 is the structure diagram according to the remaining capacity computing device of the vehicle lithium battery of one embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In remaining capacity computational methods, device, system and the vehicle of the vehicle lithium battery for introducing proposition of the embodiment of the present invention
Before, lithium battery is first simply introduced the problems of to use with discharge process.
First, when in use, the behind of the charge and discharge cycles of a large amount of numbers is that the lithium compound of composition cathode exists to lithium battery
Lithium ion is constantly absorbed and discharged in chemical reaction, and self structure variation causes ion exchange to become more and more difficult, while electricity
Solve the process of the continuous oxidizing electrode of matter, this cause the maximum capacity of battery with the growth of battery active time irreversible drop
It is low.Since the speed of chemical reaction is largely affected by temperature, the degree of aging of battery and hook of indirect and time,
So the maximum capacity of battery can not be merely according to battery active time calculate.
Secondly, lithium battery discharge process is a complicated nonlinear chemical reaction process, discharge current with load change
Change and change, the thermal energy that the internal resistance of cell generates during discharge current increase increases therewith, and it is electric that this so that the discharge electricity amount of battery corresponds to
The feature of nonlinear change is presented in the variation of pond state-of-charge.And (a is different lithium chemical combination when single lithium battery voltage is less than a
Object form cathode lithium battery specific voltage), lithium battery can not continue to discharge, remaining battery can discharge electricity amount be 0.
The above problem is based on, in order to accurately obtain the current actual capacity of lithium battery, the embodiment of the present invention carries
A kind of remaining capacity computational methods, device, system and the vehicle of vehicle lithium battery are gone out.
Remaining capacity computational methods, the dress of the vehicle lithium battery proposed according to embodiments of the present invention are described with reference to the accompanying drawings
It puts, system and vehicle, describes the remaining capacity meter of the vehicle lithium battery proposed according to embodiments of the present invention with reference to the accompanying drawings first
Calculation method.
Fig. 1 is the flow chart of the remaining capacity computational methods of the vehicle lithium battery of one embodiment of the invention.
As shown in Figure 1, the remaining capacity computational methods of the vehicle lithium battery comprise the following steps：
In step S101, current time is detected.
Specifically, the embodiment of the present invention can carry out the detection of current time by time detecting equipment, can such as lead to
Cross the detection that the microcomputer that the electronic watch on vehicle is carried out in the detection or vehicle of current time carries out current time.
In step s 102, the renewal time in each electricity section of discharge electricity amount table is obtained.
It is understood that during electric discharge, corona discharge passes by each time section (such as：SOC 80%~79%),
Discharge electricity amount and the renewal time corresponding to this section will be updated, without considering whether discharge electricity amount is the same number,
Renewal time is inherently new at this time.And the user of electric car often when battery is not yet completely depleted charge (this
It is rational, and is the occupation mode of the health of lithium battery), such as just charge when SOC 30%, then it leads
The discharge range being located in voltameter all in the range of SOC 30%~0% is caused, can not be all continually updated.Therefore, according to
Charging when SOC where section it is different, the renewal time in each electricity section also can be different, so as to need to obtain discharge electricity amount
The renewal time in each electricity section of table, to carry out the action of next step.
Further, in one embodiment of the invention, before initial discharge voltameter is established, including：To lithium electricity
The state-of-charge in pond carries out subregion according to default one step, to establish discharge electricity amount table according to division result.
For example, can be manually by battery management unit BMS (BATTERY MANAGEMENT SYSTEM, cell tube
Reason system) on state-of-charge SOC do subregion according to 1% one step, establish battery each SOC sections it is corresponding electric discharge electricity
Scale.As shown in table 1, state-of-charge SOC is 100, and does subregion according to 1% one step, then 99-100 is a subregion,
98-99 is another subregion, until 0-1 is a subregion, it is 100 subregions so as to SOC points by state-of-charge.Table 1 is
Discharge electricity amount table.
Table 1
| Battery SOC section (%) | Discharge electricity amount (WH) | Update date (Date) |
| 99~100 | 520 | 2017-11-6 |
| 98~99 | 516 | 2017-11-7 |
| 97~98 | 512 | 2017-11-7 |
| …… | …… | …… |
| 2~3 | 50 | 2017-11-5 |
| 1~2 | 10 | 2017-10-10 |
| 0~1 | 0 | 2017-10-10 |
In step s 103, the to be repaired of discharge electricity amount table is determined according to the renewal time of current time and each electricity section
Positive electricity section.
For example, user just charges when SOC 30%, then causes position all in the range of SOC 30%~0%
Discharge range in voltameter can not be all continually updated, it is thus determined that the electricity section to be modified of discharge electricity amount table.Work as energy
Buret managed the data update time gap current time in some SOC section in system discovery discharge electricity amount table more than b days, at this point,
SOC sections more than b days are just the electricity section to be modified of discharge electricity amount table.Wherein, specific super SOC sections in a few days are just
The electricity section to be modified of discharge electricity amount table, the time for being more than can be configured according to actual conditions, not do specific limit herein
System.
In step S104, electricity section to be modified is fitted according to the data and curves of initial discharge voltameter and is repaiied
Just, updated discharge electricity amount table is obtained, to obtain the current residual electricity of lithium battery by updated discharge electricity amount table.
It such as just charges when SOC 30%, then cause all in the range of SOC 30%~0% be located at
Discharge range in voltameter can not be all continually updated, when SOC maximums, in this example i.e. 30%~29% this
Section, renewable time has timed, out (this time-out time can be set) apart from current time, at this time between SOC 30%~0%
All discharge ranges do data fitting and correct discharge capacity, while change its renewable time.
Further, in one embodiment of the invention, working as lithium battery, is obtained by updated discharge electricity amount table
Preceding remaining capacity, further comprises：Obtain the current state-of-charge of lithium battery；It is obtained meeting default item according to current state-of-charge
The electricity section of part；It adds up to obtain current residual electricity according to the electricity in the electricity section for meeting preset condition.
Optionally, in one embodiment of the invention, the electricity section of preset condition is residing for current state-of-charge
Electricity section and the electricity section below residing electricity section.
Specifically, when Energy Management System finds the data update date distance in some SOC section in discharge electricity amount table
Current date is more than b days (b is scalar quantity), then is traced downwards since the point, to the SOC sections discharge electricity amount root of all time-out
Amendment is fitted according to data and curves in initial default table.Assuming that current SOC divisional units step-length 1%, SOC is on current BMS
X% (x is integer), following each section discharge electricity amount accumulated value that residing section starts are S, then the remaining electricity of current lithium battery
It measures as S, so as to accurately obtain current lithium battery remaining capacity, the accuracy that lithium battery dump energy calculates is improved, to close
The distribution electric energy of reason is powered system and occupant comfort system etc., provides reliable input.
For example, the embodiment of the present invention can be discharged by vehicle lithium battery and be trained, i.e., Energy Management System is to battery
The voltage * electric currents=discharge power exported in real time is sampled and integrated, and fills in the corresponding discharge electricity amount value in each SOC sections, raw
Into initial default table.Finally, Energy Management System continuous updating table during the use of battery, and record newer day
Phase makes current BMS report SOC sections (such as 95% to 94%) corresponding with the actual discharge amount gathered, so as to effective
Ensure lithium battery remaining capacity accuracy.
The remaining capacity computational methods of the vehicle lithium battery proposed according to embodiments of the present invention, can according to current time and
The renewal time in each electricity section is fitted amendment to discharge electricity amount table, so as to accurately obtain the current residual of lithium battery electricity
Amount, which is the prophesy course continuation mileage of science, is rational distribution electric energy is powered system and occupant comfort system etc., provides reliable
Input, effectively improve the practicability of vehicle, and improve the reliability of vehicle, effectively promote user's riding experience.
Referring next to the remaining capacity computing device for the vehicle lithium battery that attached drawing description proposes according to embodiments of the present invention.
Fig. 2 is the structure diagram of the remaining capacity computing device of the vehicle lithium battery of one embodiment of the invention.
As shown in Fig. 2, the remaining capacity computing device 10 of the vehicle lithium battery includes：Detection module 100, first obtains mould
Block 200 confirms 300 and second acquisition module 400 of module.
Wherein, detection module 100 is used to detect current time.First acquisition module 200 is used to obtain discharge electricity amount table
The renewal time in each electricity section.Confirm that renewal time of the module 300 for according to current time and each electricity section is true
Determine the electricity section to be modified of discharge electricity amount table.Second acquisition module 400 is treated according to the data and curves of initial discharge voltameter
It corrects electricity section and is fitted amendment, obtain updated discharge electricity amount table, to be obtained by updated discharge electricity amount table
The current residual electricity of lithium battery.The device 10 of the embodiment of the present invention can be according to the update in current time and each electricity section
Time is fitted amendment to discharge electricity amount table, so as to accurately obtain the current residual electricity of lithium battery, effectively improves vehicle
Practicability, and the reliability of vehicle is improved, effectively promote user's riding experience.
Further, in one embodiment of the invention, the device 10 of the embodiment of the present invention further includes：Establish module,
Generation module and update module.
Wherein, module is established for establishing initial discharge voltameter.Generation module is used for the electric discharge work(to lithium battery output
Rate is sampled and integrated, and to obtain the discharge electricity amount in each electricity section in initial discharge voltameter, generates discharge electricity amount table.
Update module is used to update discharge electricity amount table according to the present discharge electricity of lithium battery, and when recording the update in each electricity section
Between.
Further, in one embodiment of the invention, the device 10 of the embodiment of the present invention further includes：Division module.
Wherein, division module is used to carry out subregion according to default one step to the state-of-charge of lithium battery, to be built according to division result
Stand up power consumption table.
It should be noted that the foregoing explanation to remaining capacity computational methods embodiment is also applied for the embodiment
Remaining capacity computing device, details are not described herein again.
The remaining capacity computing device proposed according to embodiments of the present invention, can be according to current time and each electricity section
Renewal time amendment is fitted to discharge electricity amount table, be science so as to accurately obtain the current residual electricity of lithium battery
Prophesy course continuation mileage is powered system and occupant comfort system etc. for rational distribution electric energy, provides reliable input, effectively
The practicability of vehicle is improved, and improves the reliability of vehicle, effectively promotes user's riding experience.
In addition, the embodiment of the present invention also proposed a kind of battery management system, include the residue of above-mentioned vehicle lithium battery
Electricity computing device.The system can intend discharge electricity amount table according to the renewal time of current time and each electricity section
It closes and corrects, be the prophesy course continuation mileage of science so as to accurately obtain the current residual electricity of lithium battery, be rational distribution electric energy
System and occupant comfort system etc. are powered, reliable input is provided, effectively improves the practicability of vehicle, and improves vehicle
Reliability effectively promotes user's riding experience.
In addition, the embodiment of the present invention also proposed a kind of vehicle, including above-mentioned battery management system.The vehicle can be with
Amendment is fitted to discharge electricity amount table according to the renewal time of current time and each electricity section, so as to accurately obtain lithium electricity
The current residual electricity in pond, which is the prophesy course continuation mileage of science, is rational distribution electric energy is powered system and occupant comfort
System etc. provides reliable input, effectively improves the practicability of vehicle, and improves the reliability of vehicle, effectively promotes user and drives
Multiply experience.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features contact directly or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments described in this specification or example and different embodiments or exemplary feature
It closes and combines.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of remaining capacity computational methods of vehicle lithium battery, which is characterized in that comprise the following steps：
Detect current time；
Obtain the renewal time in each electricity section of discharge electricity amount table；
The positive electricity to be repaired of the discharge electricity amount table is determined according to the renewal time of the current time and each electricity section
Measure section；And
Amendment is fitted to the electricity section to be modified according to the data and curves of initial discharge voltameter, is obtained updated
Discharge electricity amount table, to obtain the current residual electricity of lithium battery by the updated discharge electricity amount table.
2. the remaining capacity computational methods of vehicle lithium battery according to claim 1, which is characterized in that further include：
Establish the initial discharge voltameter；
The discharge power of lithium battery output is sampled and integrated, to obtain each electricity in the initial discharge voltameter
The discharge electricity amount in section is measured, generates the discharge electricity amount table；
The discharge electricity amount table is updated according to the present discharge electricity of the lithium battery, and records each electricity section more
The new time.
3. the remaining capacity computational methods of vehicle lithium battery according to claim 2, which is characterized in that described first establishing
Before beginning discharge electricity amount table, including：
Subregion is carried out according to default one step to the state-of-charge of the lithium battery, to establish the electric discharge according to division result
Voltameter.
4. the remaining capacity computational methods of vehicle lithium battery according to claim 1, which is characterized in that described by described
Updated discharge electricity amount table obtains the current residual electricity of lithium battery, further comprises：
Obtain the current state-of-charge of the lithium battery；
The electricity section for meeting preset condition is obtained according to the current state-of-charge；
It adds up to obtain the current residual electricity according to the electricity in the electricity section for meeting preset condition.
5. the remaining capacity computational methods of vehicle lithium battery according to claim 4, which is characterized in that the preset condition
Electricity section be the electricity section residing for the current state-of-charge and the electricity below the residing electricity section
Section.
6. a kind of remaining capacity computing device of vehicle lithium battery, which is characterized in that including：
Detection module, for detecting current time；
First acquisition module, for obtaining the renewal time in each electricity section of discharge electricity amount table；
Module is confirmed, for determining the discharge electricity amount according to the renewal time of the current time and each electricity section
The electricity section to be modified of table；And
Second acquisition module is fitted the electricity section to be modified according to the data and curves of initial discharge voltameter and repaiies
Just, updated discharge electricity amount table is obtained, to obtain the current residual electricity of lithium battery by the updated discharge electricity amount table
Amount.
7. the remaining capacity computing device of vehicle lithium battery according to claim 6, which is characterized in that further include：
Module is established, for establishing the initial discharge voltameter；
Generation module, the discharge power for being exported to the lithium battery are sampled and integrated, to obtain the initial discharge
The discharge electricity amount in each electricity section, generates the discharge electricity amount table in voltameter；
Update module for updating the discharge electricity amount table according to the present discharge electricity of the lithium battery, and records described every
The renewal time in a electricity section.
8. the remaining capacity computing device of vehicle lithium battery according to claim 6, which is characterized in that further include：
Division module carries out subregion, with according to subregion knot for the state-of-charge to the lithium battery according to default one step
Fruit establishes the discharge electricity amount table.
9. a kind of battery management system, which is characterized in that including：Such as claim 6-8 any one of them vehicle lithium batteries
Remaining capacity computing device.
10. a kind of vehicle, which is characterized in that including：Battery management system as claimed in claim 9.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109633447A (en) * | 2019-01-09 | 2019-04-16 | 福建联迪商用设备有限公司 | Residual quantity display method and computer readable storage medium |
| CN111965548A (en) * | 2020-09-27 | 2020-11-20 | 哈尔滨工业大学（威海） | Battery system sensor fault diagnosis method based on state estimation method |
| CN112782735A (en) * | 2020-12-30 | 2021-05-11 | 大运汽车股份有限公司 | Self-learning endurance mileage correction calculation method |
| CN113671387A (en) * | 2021-01-19 | 2021-11-19 | 深圳逸驰云动科技有限公司 | Method and device for estimating electric quantity of lithium battery electric vehicle |
| CN114312476A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Method, device and system for displaying remaining battery power and vehicle |
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