CN104101837B - A kind of on-line calculation method of the current total capacity of battery - Google Patents
A kind of on-line calculation method of the current total capacity of battery Download PDFInfo
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- CN104101837B CN104101837B CN201310116182.4A CN201310116182A CN104101837B CN 104101837 B CN104101837 B CN 104101837B CN 201310116182 A CN201310116182 A CN 201310116182A CN 104101837 B CN104101837 B CN 104101837B
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Abstract
The present invention proposes a kind of on-line calculation method of the current total capacity of battery, includes the following steps：Detect battery whether charging complete；The first total charge capacity and first total discharge electricity amount of battery are obtained in charging complete；When the nuclear power state of battery in use drops to the first preset value, the second total charge capacity and second total discharge electricity amount of battery are obtained；This discharge electricity amount is obtained according to first total charge capacity, first total discharge electricity amount, second total charge capacity and second total discharge electricity amount；According to the first default residual capacity for being worth to battery；The nominal capacity of battery is modified according to this discharge electricity amount and residual capacity.The method of the present invention can be realized intelligently calculates battery total capacity online, solves the problems, such as battery total capacity identification, save a large amount of manpower and material resources, while also to cause battery SOC inaccuracy to provide reliable parameter to ensure because battery capacity decays.
Description
Technical field
The present invention relates to battery capacity calculate technical field, more particularly to a kind of current total capacity of battery in line computation side
Method.
Background technology
Calculating for battery capacity, the prior art are identified off-line, i.e., from carrier go out to take out by battery or artificial
Participate in carry out charge and discharge control, and by manual record mode carry out data preparation after, obtain battery remaining power.And it is existing
There are these disadvantages for technology：Operating method is complicated, demands to all kinds of test equipments are larger, and belongs to one-way operation.In addition, people
Method not smart enoughization of industry control, can slattern a large amount of human and material resources.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, the present invention propose it is a kind of can the battery for calculating the current total capacity of battery of on-line intelligence currently always hold
The computational methods of amount, this method can save a large amount of manpower and material resources, and can avoid causing because battery capacity decays
Influence caused by battery SOC inaccuracy.
To achieve the goals above, the embodiment of the present invention propose a kind of current total capacity of battery in line computation side
Method includes the following steps：Detect battery whether charging complete；First total charge capacity of the battery is obtained in charging complete
With first total discharge electricity amount；When the state-of-charge of the battery in use drops to the first preset value, described in acquisition
The second total charge capacity and second total discharge electricity amount of battery；According to described first total charge capacity, first total discharge electricity amount,
Two total charge capacities and second total discharge electricity amount obtain this discharge electricity amount；It is preset according to described first and is worth to the battery
Residual capacity；The nominal capacity of the battery is modified according to the residual capacity and this described discharge electricity amount.
The on-line calculation method of the current total capacity of battery according to the ... of the embodiment of the present invention, can online to the charging of battery,
Discharge condition is identified, and the intelligentized current total capacity for calculating battery may be implemented, currently total to solve battery
The problem of capacity is difficult to saves a large amount of manpower and material resources, while being also to lead to electricity because battery capacity decays
Pond SOC inaccuracy provides reliable data and ensures, can recognize the present situation of battery in time.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention；
Fig. 2 is the flow chart of the on-line calculation method of the current total capacity of battery in accordance with another embodiment of the present invention；
When Fig. 3 is that the battery of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention is fully charged
Data record flow chart；
Fig. 4 is the battery discharge procedure of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention
The flow chart of middle battery capacity calculating method；
Fig. 5 is the record battery charging of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention
The flow chart of preceding data；With
Fig. 6 is the battery charging process of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention
The flow chart of the computational methods of middle battery capacity.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the present invention
System.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the connection inside two elements, it can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
The on-line calculation method of battery dump energy according to the ... of the embodiment of the present invention is described below in conjunction with attached drawing.
Fig. 1 is the flow chart according to the on-line calculation method of the current total capacity of battery of one embodiment of the invention.
As shown in Figure 1, the on-line calculation method of the current total capacity of battery according to an embodiment of the invention, including it is following
Step：
Step S101, detection battery whether charging complete.That is whether detection battery fills with electricity.
Step S102 obtains the first total charge capacity and first total discharge electricity amount of battery in charging complete.I.e. in electricity
The first total charge capacity and first total discharge capacity of battery are obtained when pond is fully charged.Wherein, specifically real at one of the present invention
Apply in example, first total charge capacity be battery this it is fully charged when the charge capacity that records, first total discharge electricity amount is electricity
Pond this it is fully charged when the discharge electricity amount that records.And in battery charging complete, the state-of-charge SOC of battery is 100%.
Step S103 obtains the of battery when the state-of-charge of battery in use drops to the first preset value
Two total charge capacities and second total discharge electricity amount.Wherein, the first preset value has technical staff to preset, at one of the present invention
In embodiment, it is preferable that the first preset value is 20%.And in a specific embodiment of the invention, second total charge capacity is
For the total charge capacity of battery history, second total discharge electricity amount is the total discharge electricity amount of battery history.In other words, in battery discharge
In the process, when the state-of-charge of battery drops to 20%, then obtain and record total charge capacity of battery at this time and total electric discharge electricity
Amount.
Step S104, according to the total electric discharge of first total charge capacity, first total discharge electricity amount, second total charge capacity and second
Electricity obtains this discharge electricity amount.Specifically, such as：Assuming that first total charge capacity is Q1, first total discharge electricity amount is Q2, the
Two total charge capacities are HQ1, and second total discharge electricity amount is HQ2, then this discharge electricity amount is（HQ2-Q2）-（HQ1-Q1）.
Step S105, according to the first default residual capacity for being worth to battery.Specifically, the first preset value, that is, battery discharge
Remaining state-of-charge afterwards can then calculate the remaining capacity of battery, the i.e. residual capacity of battery according to the nominal capacity of battery.
Step S106 is modified the nominal capacity of battery according to this discharge electricity amount and residual capacity.Specifically, first
The current total capacity of battery, and total appearance that comparative cell is current are first obtained according to the sum of this discharge electricity amount of battery and residual capacity
Amount and nominal capacity.If nominal capacity is more than the sum of current total capacity and first threshold, by the nominal capacity amendment of battery
For current total capacity.If the nominal capacity of battery is less than the difference of current total capacity and first threshold, which is repaiied
Just it is being current total capacity.Wherein, first threshold is but is not limited to 2AH.Preferably, first threshold 2AH.
Further, as shown in Fig. 2, the current total capacity of battery in accordance with another embodiment of the present invention in line computation side
Method, it is further comprising the steps of：
Step S201 is monitored battery in battery discharge.
Step S202 is charged the battery when detecting that the state-of-charge of battery drops to the second preset value, and root
According to the second default remaining capacity for being worth to battery.Wherein, the second preset value is but is not limited to 20%.In other words, battery is being put
In electric process, when state-of-charge is less than 20%, charge the battery, and according to battery nominal capacity and the first preset value meter
Calculate the remaining capacity of battery at this time.
Step S203 obtains this charge capacity when detecting battery charging complete.
Step S204 is modified the nominal capacity of battery according to this charge capacity and remaining capacity.Specifically, first
The current total capacity of battery is first obtained according to this charge capacity and battery dump energy, and the current total capacity of comparative cell and
The nominal capacity of battery, if the current total capacity of battery is more than the sum of nominal capacity and first threshold of battery, by battery
Nominal capacity be modified to the sum of the half of nominal capacity and current total capacity and nominal capacity difference；If fruit battery currently always holds
Amount less than nominal capacity and first threshold difference, then by battery nominal capacity be modified to nominal capacity and the current total capacity of battery and
The difference of the half of nominal capacity difference.Wherein, first threshold is but is not limited to 2AH.
As specific example, battery according to the ... of the embodiment of the present invention is described in detail below in conjunction with attached drawing 3-6 and currently always holds
The on-line calculation method of amount.
As shown in figure 3, for according to the battery of the on-line calculation method of the current total capacity of battery of one embodiment of the invention
Data record flow chart when fully charged, includes the following steps：
Step S301 charge modes.I.e. battery is in the state of charging.
Step S302, judges whether the state-of-charge SOC of battery is equal to 100%Judge whether battery fills with electricity.
If so, S303 is thened follow the steps, it is no to then follow the steps 306.
Step S303, fully charged number+1 deposit E2.Even detect that battery fills with electricity, then it is battery is fully charged
Number adds 1, and data are stored into microcontroller storage unit E2.
Step S304 sets fully charged flag bit, deposits E2.I.e. by fully charged mark position 1, show that battery is fully charged.
Step S305 reads current history charge and discharge electricity, and deposits E2.Record this it is fully charged before（Including this
It is secondary）The total charge capacity of history and the total discharge electricity amount of history data, and be stored in E2 units.
Step S306 terminates.Stop recording data.
Fig. 4 is the battery discharge procedure according to the on-line calculation method of the current total capacity of battery of one embodiment of the invention
The flow chart of middle battery capacity calculating method.
As shown in figure 4, the battery of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention is put
Battery capacity calculating method in electric process, includes the following steps：
Step S401, discharge mode.I.e. battery is in discharge condition.
Step S402 reads EEPROM（Electrically Erasable Programmable Read-Only
Memory, Electrically Erasable Programmable Read-Only Memory）Fully charged flag bit.Read the data of fully charged flag bit in memory.
Whether step S403 judges effective full of electrosemaphore.If so, S404 is thened follow the steps, it is no to then follow the steps
S411。
Step S404 judges whether mean temperature is more than 10 DEG C, whether the current state-of-charge SOC of battery be less than or equal to
20%, battery estimates whether state-of-charge SOC is less than 20% and current SOC and whether estimates the difference of SOC less than 4%.If so,
S405 is thened follow the steps, it is no to then follow the steps S411.
Step S405, read the battery history discharge electricity amount HQ1 recorded in memory EEPROM, history charge capacity HQ2,
The charge capacity Q2 that the discharge electricity amount Q1 recorded when last time is fully charged and when fully charged last time record.
Step S406, judges whether HQ1 is more than Q1, HQ2 and whether is more than whether Q2, HQ1-Q1 are less than battery nominal capacity
3 times and（HQ1-Q1）-（HQ2-Q2）Whether the 70% of battery nominal capacity is more than.If so, thening follow the steps S407, otherwise
Execute step S411.
Step S407, obtain this discharge electricity amount=（HQ1-Q1）-（HQ2-Q2）.
Step S408, judges whether total capacity is more than residual capacity+this discharge electricity amount+2AH.Wherein, total capacity is electricity
The nominal capacity in pond.And battery remaining power+this current total capacity of discharge electricity amount=battery.Then in other words, judge battery
Whether nominal capacity is more than the current total capacity+2AH of battery.If so, S410 is thened follow the steps, it is no to then follow the steps S409.
Step S409, judges whether total capacity is less than residual capacity+this discharge electricity amount -2AH.Judge the nominal of battery
Whether capacity is less than the current total capacity -2AH of battery.If so, S410 is thened follow the steps, it is no to then follow the steps S411.
Step S410, total capacity are modified to：Current capacities+this discharge electricity amount.In other words, the nominal capacity of battery is repaiied
Just it is：The residual capacity of battery+this discharge electricity amount is equal to the current total capacity of battery.
Step S411 terminates.
As shown in figure 5, for according to the record of the on-line calculation method of the current total capacity of battery of one embodiment of the invention
The flow chart of data, includes the following steps before battery charging：
Step S501, charge mode.I.e. battery is in charged state.
Step S502 removes the fully charged flag bits of EEPROM.Flag bit fully charged memory EEPROM is reset.
Step S503, judges whether battery current state-of-charge SOC is less than or equal to 20%, battery and estimates state-of-charge
Whether SOC is less than or equal to 20% and current SOC and whether estimates the difference of SOC less than 4%.It is no if it is thening follow the steps S504
Then terminate.
Step S504, capacity marking can be corrected by setting charging.Will charge can correct mark position 1, can nominally hold to battery
Amount is modified.
Step S505, log history charge and discharge information about power.It obtains and records battery history charge capacity and history is put
Power consumption.
Fig. 6 is the battery charging process according to the on-line calculation method of the current total capacity of battery of one embodiment of the invention
The flow chart of the computational methods of middle battery capacity.
As shown in fig. 6, the battery of the on-line calculation method of the current total capacity of battery according to an embodiment of the invention fills
The computational methods of battery capacity, include the following steps in electric process：
Step S601, in charging process.I.e. battery is in charged state.
Step S602 judges whether battery charge capacity corrects flag bit effective.If so, S603 is thened follow the steps, it is no
Then follow the steps S608.In other words, judge that battery charge capacity corrects whether flag bit is 1, if it is, can be filled to battery
Capacitance is modified, and otherwise cannot be modified.
Step S603 judges whether battery this discharge capacity is less than 0.1AH, whether battery this charging capacity is more than electricity
Pond nominal capacity 80%, mean temperature whether be more than 10 DEG C and battery charging before residual capacity whether be less than battery it is nominal
The 20% of capacity.If so, S604 is thened follow the steps, it is no to then follow the steps S608.
Step S604, judges whether this total capacity of battery is more than the nominal total capacity+2AH of battery.If it is, executing step
Rapid S606, it is no to then follow the steps S605.
Step S605, judges whether this total capacity of battery is less than the nominal total capacity -2AH of battery.If it is, executing step
Rapid S607, it is no to then follow the steps S608.
The nominal capacity of battery is modified to by step S606：Battery nominal capacity+this total capacity and nominal capacity difference
Half.
The nominal capacity of battery is modified to by step S607：This total capacity of battery nominal capacity-and nominal capacity difference
Half.
Step S608, fully charged flag bit is effective, reads current charge and discharge history electricity.That is the fully charged flag bit of battery
1 is set, battery is fully charged at this time, reads and record the history charge capacity and history discharge electricity amount of present battery.
Step S609, SOC=100%.I.e. battery charge state reaches 100%, and battery is fully charged.
Step S610 terminates.
The on-line calculation method of the current total capacity of battery according to the ... of the embodiment of the present invention, can online to the charging of battery,
Discharge condition is identified, and the intelligentized current total capacity for calculating battery may be implemented, currently total to solve battery
The problem of capacity is difficult to saves a large amount of manpower and material resources, while being also to lead to electricity because battery capacity decays
Pond SOC inaccuracy provides reliable data and ensures, can recognize the present situation of battery in time.
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 spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (5)
1. a kind of on-line calculation method of the current total capacity of battery, which is characterized in that include the following steps：
Detect battery whether charging complete；
The first total charge capacity and first total discharge electricity amount of the battery are obtained in charging complete；
When the state-of-charge of the battery in use drops to the first preset value, obtain the battery second always fills
Power consumption and second total discharge electricity amount；
It is obtained according to described first total charge capacity, first total discharge electricity amount, second total charge capacity and second total discharge electricity amount
This discharge electricity amount；
According to the described first default residual capacity for being worth to the battery；
The nominal capacity of the battery is modified according to this described discharge electricity amount and the residual capacity, further includes：
The battery is monitored in the battery discharge；
It when detecting that the state-of-charge of the battery drops to the second preset value, charges to the battery, and according to institute
State the second default remaining capacity for being worth to the battery；
When detecting the battery charging complete, this charge capacity is obtained；
The nominal capacity of the battery is modified according to this described charge capacity and the remaining capacity, wherein according to
This described charge capacity and the remaining capacity are modified the nominal capacity of the battery, specifically include：According to described
This charge capacity and the remaining capacity obtain the current total capacity of battery；Compare the current total capacity of the battery and nominal
Capacity；If the current total capacity is more than the sum of the nominal capacity and first threshold, the nominal capacity is modified to
The sum of the half of the nominal capacity and the current total capacity and the nominal capacity difference.
2. according to the method described in claim 1, it is characterized in that, in the battery charging complete, the battery it is charged
State SOC is 100%.
3. according to the method described in claim 1, it is characterized in that, further including：
If the current total capacity is less than the difference of the nominal capacity and first threshold, the nominal capacity is modified to institute
State the difference of nominal capacity and the half of the current total capacity and the nominal capacity difference.
4. according to the method described in claim 1, it is characterized in that, first preset value and second preset value are
20%.
5. according to the method described in claim 4, it is characterized in that, the first threshold is 2AH.
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| CN201310116182.4A CN104101837B (en) | 2013-04-03 | 2013-04-03 | A kind of on-line calculation method of the current total capacity of battery |
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| CN201310116182.4A CN104101837B (en) | 2013-04-03 | 2013-04-03 | A kind of on-line calculation method of the current total capacity of battery |
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| CN104101837B true CN104101837B (en) | 2018-10-16 |
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| CN106443462A (en) * | 2016-09-05 | 2017-02-22 | 深圳市沃特玛电池有限公司 | Method for correcting maximum usable capacity of power battery pack of electric car |
| CN106772091B (en) * | 2016-12-30 | 2020-02-14 | Oppo广东移动通信有限公司 | Method and device for updating battery capacity value and terminal |
| CN107015162A (en) * | 2017-06-06 | 2017-08-04 | 安徽美能储能系统有限公司 | A kind of SOC on-line calibration methods for zinc-bromine flow battery |
| CN112305439B (en) * | 2019-07-31 | 2022-01-07 | 比亚迪股份有限公司 | Battery life testing method and device and readable storage medium |
| CN111323708A (en) * | 2020-04-16 | 2020-06-23 | 浙江吉利新能源商用车集团有限公司 | Analysis method for service life attenuation of power battery system |
| CN112557912B (en) * | 2020-11-24 | 2023-04-07 | 北京紫光展锐通信技术有限公司 | Battery effective capacity determining method and related equipment |
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| JP2006177764A (en) * | 2004-12-22 | 2006-07-06 | Sanyo Electric Co Ltd | Learning capacity correcting method of battery |
| CN1710440A (en) * | 2005-06-30 | 2005-12-21 | 上海贝豪通讯电子有限公司 | Method for measuring cell capacity of portable apparatus |
| CN201017026Y (en) * | 2006-10-20 | 2008-02-06 | 中国电信股份有限公司 | Portable accumulator cell tester |
| JP2011038878A (en) * | 2009-08-10 | 2011-02-24 | Sanyo Electric Co Ltd | Deterioration degree determination method for secondary battery and secondary battery |
| CN102023283B (en) * | 2009-09-16 | 2015-06-24 | 徐先 | On-line measuring method for capacity of accumulator |
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