CN105206881B - The Poewr control method and system of power cell of vehicle group - Google Patents
The Poewr control method and system of power cell of vehicle group Download PDFInfo
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- CN105206881B CN105206881B CN201510504414.2A CN201510504414A CN105206881B CN 105206881 B CN105206881 B CN 105206881B CN 201510504414 A CN201510504414 A CN 201510504414A CN 105206881 B CN105206881 B CN 105206881B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application provides the Poewr control method and system of a kind of power cell of vehicle group, and the power battery pack includes one or more battery unit, it is characterised in that methods described includes：Detect the current voltage of one or more battery unit and the electric current of the power battery pack；According to the current voltage and the internal resistance increment of the one or more of battery units of the Current calculation；The heat increment of power battery pack according to the internal resistance increment and the Current calculation of one or more of battery units；The power of the power battery pack is controlled according to the heat increment of the power battery pack.The application can calculate the heat increment of power cell of vehicle group, then carry out Power Control to power battery pack according to heat increment, improve the accuracy of Power Control, give full play to the performance of power battery pack, and ensure safety.
Description
Technical field
The application is related to field of vehicle control, more particularly to a kind of power cell of vehicle group Poewr control method and be
System.
Background technology
Hybrid vehicle (Hybrid Vehicle) refer to driver for vehicle by it is two or more can be while operating
The vehicle that single drive system is constituted jointly, the vehicle running state of the road horsepower foundation reality of vehicle is by single drive system
Separately or cooperatively provide.
Usually said hybrid vehicle, generally refers to oil-electric vehicle, i.e., using traditional internal combustion engine (bavin
Oil machine or gasoline engine) and motor be used as power source.Wherein, motor is used to the electric energy of power battery pack being converted to mechanical energy
To drive vehicle to travel.
With the growth of hybrid vehicle use time, power battery pack also can slowly start aging.Power battery pack
One of influence brought of aging is exactly that the internal resistance of power battery pack becomes big, and the battery management system of vehicle is basis
The size of internal resistance calculates the heat that power battery pack is produced, and the heat obtained according to calculating notifies motor to power electric
Pond group carries out Power Control.
In correlation technique, battery management system is determined in power battery pack generally according to the use time of power battery pack
Portion's resistance, however, internal resistance determined by this mode is often not accurate enough, this may can cause the defeated of power battery pack
Go out or input power is less than actual exportable or input power, it is impossible to sufficiently using power battery pack, or power electric
The output of pond group or input power are more than actual exportable or input power, and heat is too high, in turn results in potential potential safety hazard.
The content of the invention
In view of this, the application provides the Poewr control method and system of a kind of power cell of vehicle group.
Specifically, the application is achieved by the following technical solution：
A kind of Poewr control method of power cell of vehicle group, the power battery pack includes one or more battery list
Member, methods described includes：
Detect the current voltage of one or more battery unit and the electric current of the power battery pack；
According to the current voltage and the internal resistance increment of the one or more of battery units of the Current calculation；
The power battery pack according to the internal resistance increment and the Current calculation of one or more of battery units
Heat increment；
The power of the power battery pack is controlled according to the heat increment of the power battery pack.
Optionally, the internal resistance increment of the battery unit according to the current voltage and the Current calculation, including：
The battery unit according to the current voltage of the battery unit and the Current calculation of the power battery pack
Current internal resistance；
Obtain the corresponding expected internal resistance of use time of battery unit described in current time；
The difference of the current internal resistance of the battery unit and the expection internal resistance of the battery unit is calculated, to obtain the electricity
The internal resistance increment of pool unit.
Optionally, including：
Obtain the corresponding expection voltage of current charge volume of the battery unit；
For the battery unit, the current voltage and the difference of the expection voltage are calculated, to obtain the battery
The voltage increment of unit；
The business of the voltage increment and the current flow is calculated, to obtain the internal resistance increment of the battery unit.
Optionally, the heat increment according to the power battery pack is controlled to the power of the power battery pack
System, including：
Judge whether the heat increment of the power battery pack is more than or equal to default safe heat threshold；
When the heat increment of the power battery pack is more than or equal to default safe heat threshold, reduce the power electric
The power output and/or input power of pond group.
Optionally, moved described in the internal resistance increment and the Current calculation according to one or more of battery units
The heat increment of power battery pack, including：
When the internal resistance increment of any battery unit is more than in advance with the difference of the average value of the internal resistance increment of other battery units
If threshold value when, reduce the weight of the battery unit during the heat increment of the power battery pack is calculated.
A kind of power control system of power cell of vehicle group, the system includes：
Detection module, for detecting the current voltage of one or more battery unit and the electricity of the power battery pack
Stream；
First computing module, for according to the current voltage and the one or more of battery units of the Current calculation
Internal resistance increment；
Second computing module, for the internal resistance increment and the Current calculation according to one or more of battery units
The heat increment of the power battery pack；
Power control module, enters for the heat increment according to the power battery pack to the power of the power battery pack
Row control.
Optionally, first computing module, current voltage and the power electric with specific reference to the battery unit
The current internal resistance of battery unit described in the Current calculation of pond group；
Obtain the corresponding expected internal resistance of use time of battery unit described in current time；
The difference of the current internal resistance of the battery unit and the expection internal resistance of the battery unit is calculated, to obtain the electricity
The internal resistance increment of pool unit.
Optionally, first computing module, specifically obtains the corresponding expected electricity of current charge volume of the battery unit
Pressure；
For the battery unit, the current voltage and the difference of the expection voltage are calculated, to obtain the battery
The voltage increment of unit；
The business of the voltage increment and the current flow is calculated, to obtain the internal resistance increment of the battery unit.
Optionally, the power control module, specifically judges whether the heat increment of the power battery pack is more than or equal to
Default safe heat threshold；When the heat increment of the power battery pack is more than or equal to default safe heat threshold, subtract
The power output and/or input power of the small power battery pack.
Optionally, second computing module, specifically in the internal resistance increment and other battery units of any battery unit
When the difference of the average value of internal resistance increment is more than default threshold value, during the heat increment of the power battery pack is calculated
Reduce the weight of the battery unit.
The application can calculate the heat increment of power cell of vehicle group it can be seen from above description, then according to heat
Measure increment and Power Control carried out to power battery pack, improve the accuracy of Power Control, give full play to the performance of power battery pack,
And ensure safety.
Brief description of the drawings
Fig. 1 is a kind of flow of the Poewr control method of power cell of vehicle group shown in the exemplary embodiment of the application one
Schematic diagram.
Fig. 2 is a kind of structure of the output control device of power cell of vehicle group shown in the exemplary embodiment of the application one
Schematic diagram.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the application.
It is the purpose only merely for description specific embodiment in term used in this application, and is not intended to be limiting the application.
" one kind ", " described " and "the" of singulative used in the application and appended claims are also intended to including majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wrapped
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application scope, the first information can also be referred to as the second information, similarly, and the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
The application provides a kind of power control scheme of power cell of vehicle group, by power battery pack heat increment
It is accurate to calculate, and then Power Control more accurately can be carried out to power battery pack.
Fig. 1 is a kind of flow of the Poewr control method of power cell of vehicle group shown in the exemplary embodiment of the application one
Schematic diagram.
Fig. 1 is refer to, the Poewr control method that the application is provided can be applied on hybrid vehicle, it is described mixed
Close to include in power vehicle and the power battery pack in energy source can be provided to motor.The power battery pack can include
One or more battery unit.The Poewr control method includes following steps：
Step 101, the current voltage of detection one or more battery unit and the electric current of the power battery pack.
In the present embodiment, before Power Control is carried out to power battery pack, it can first detect that power battery pack is wrapped
The current voltage of one or more battery unit included, and the power battery pack electric current.Such as：Vehicle traveling or
During person charges, the current voltages of one or more of battery units is detected and described according to the default time cycle
The electric current of power battery pack, to carry out Power Control.
Specifically, when the power battery pack includes multiple battery units, each battery of the power battery pack
The current voltage size of unit may be different, to obtain more accurately battery voltage, can detect working as each battery unit
Preceding voltage.Really, several battery units in multiple battery units can also be chosen as detection object, pass through the institute measured
The voltage for stating several battery units calculates battery voltage.Further, since the multiple battery unit is to be connected in series, so
The size of current of the multiple battery unit is identical, therefore in this step, can detect the electric current of some battery unit, to make
For the electric current of the power battery pack.
Step 102, increased according to the internal resistance of the current voltage and the one or more of battery units of the Current calculation
Amount.
Based on abovementioned steps 101, the current voltage and the power of one or more battery unit are obtained in detection
After the electric current of battery pack, in this step, the internal resistance increment of one or more of battery units is calculated.
In this application, the internal resistance that one or more of battery units can be calculated using following two embodiments is increased
Amount：
Embodiment one, by obtaining the corresponding expected internal resistance of the use time of battery unit described in current time calculate institute
State the internal resistance increment of battery unit.
In the present embodiment, the use time and the corresponding relation of expected internal resistance of battery unit can be prestored.Tool
Body, the internal resistance of battery unit would generally become larger with the growth of use time, and developer can be according to correlation
Test result is preserved the use time of battery unit and the corresponding relation of expected internal resistance.It is understood that preserve
The interval of use time is shorter, and obtained expection resistance will be more accurate.
| Use time | It is expected that internal resistance |
| T1 | RIt is expected that1 |
| T2 | RIt is expected that2 |
| T3 | RIt is expected that3 |
| T4 | RIt is expected that4 |
| … | … |
Table 1
The example of table 1 is refer to, wherein summarizing the use time and the corresponding relation of expected internal resistance of battery unit.It please note
The example of meaning here is only principle, does not represent actual data, and table 1 is a kind of for result and the image of principle
Description, during actual development, developer is not necessarily to list item as tissue.
In the present embodiment, current voltage that can first with the battery unit for each battery unit divided by institute
The electric current of power battery pack is stated, to obtain the current internal resistance of the battery unit, and according to the use time of the battery unit,
Obtain the expection internal resistance of the battery unit.Then, the current internal resistance of battery unit described in user subtracts the battery unit
It is expected that internal resistance, to obtain the internal resistance increment of the battery unit.It is assumed that UCurrentlyRepresent the current voltage of the battery unit, I tables
Show the electric current of the power battery pack, RIt is expected thatThe expection internal resistance of the battery unit is represented, Δ R represents the interior of the battery unit
Increment is hindered, then in the present embodiment, following formula can be used to calculate the internal resistance increment Delta R of the battery unit：
Embodiment two, the current charge volume corresponding expection voltage calculating battery unit by obtaining battery unit
Internal resistance increment.
In the present embodiment, the current charge volume of battery unit and the corresponding relation of expection voltage can be prestored.
Specifically, developer can be according to related test result by the current charge volume of battery unit pass corresponding with expection voltage
It is to be preserved.It is understood that the interval of the current charge volume preserved is smaller, obtained expection voltage will be more accurate.
| Current charge volume | Expection voltage |
| 10% | UIt is expected that1 |
| 20% | UIt is expected that2 |
| 30% | UIt is expected that3 |
| 40% | UIt is expected that4 |
| … | … |
Table 2
The example of table 2 is refer to, wherein summarizing the current charge volume of battery unit and the corresponding relation of expection voltage.Please
Notice that example here is only principle, do not represent actual data, table 1 is a kind of for result and the shape of principle
As description, during actual development, developer is not necessarily to list item as tissue.
In the present embodiment, for each battery unit, the current charge volume of the battery unit can be first detected, and
The corresponding expection voltage of the current charge volume is obtained, the expection voltage is subtracted with the current voltage of the battery unit, can
To obtain the voltage increment of the battery unit, then with the voltage increment divided by the electric current of the power battery pack, so that it may
To obtain the internal resistance increment of the battery unit.It is assumed that UCurrentlyThe current voltage of the battery unit is represented, I represents the power
The electric current of battery pack, UIt is expected thatThe expection voltage of the battery unit is represented, Δ R represents the internal resistance increment of the battery unit, then existed
In present embodiment, following formula can be used to calculate the internal resistance increment Delta R of the battery unit：
In this step, when the power battery pack includes a battery unit, one of above two mode is passed through
The internal resistance increment of the obtained battery unit is calculated, is exactly the internal resistance increment of the power battery pack.When the electrokinetic cell
When group includes multiple battery units, the internal resistance increment of each battery unit, the internal resistance of the power battery pack can be calculated respectively
Increment is the internal resistance increment sum of all battery units.Some battery units can also be chosen and calculate its internal resistance increment respectively, then
The internal resistance increment of all battery units is calculated, such as 20 battery unit meters are chosen in the battery pack including 40 battery units
Internal resistance increment is calculated, then 20 battery units are calculated into internal resistance increment and is multiplied by 2, battery pack internal resistance increment is calculated.
Step 103, the power according to the internal resistance increment and the Current calculation of one or more of battery units
The heat increment of battery pack.
Based on abovementioned steps 102, after calculating obtains the internal resistance increment of one or more of battery units, in this step
In rapid, can according to the internal resistance increment and the Current calculation power battery pack heat increment.
Specifically, in this step, the heat increment of the power battery pack can be calculated according to the calculation formula of heat.
When the power battery pack includes a battery unit, square the battery unit is multiplied by with the electric current of power battery pack
Internal resistance increment multiplied by with the time, it is possible to obtain the heat increment of the power battery pack.
When the power battery pack includes multiple battery units, the heat that each battery unit can be calculated respectively increases
The heat increment of all battery units, is then added, to obtain the heat increment of the power battery pack by amount.When the power
When battery pack includes multiple battery units, first the internal resistance increment of all battery units can also be added, it is described dynamic to obtain
The internal resistance increment of power battery pack, then according to the internal resistance incremental computations of the power battery pack power battery pack heat increase
Amount.
Optionally, it is more when the power battery pack includes multiple battery units in another embodiment of the application
Plus the heat increment of power battery pack is calculated exactly, the size of the internal resistance increment of each battery unit can be judged,
Reduce influence of the abnormal battery unit of internal resistance increment to heat incremental computations result.In the present embodiment, obtained often in calculating
After the internal resistance increment of individual battery pack, it can be determined that the internal resistance increment and the average value of the internal resistance increment of other cell voltages
Whether difference is more than default threshold value.If the internal resistance increment of some battery unit and the internal resistance increment of other cell voltages
The difference of average value is more than the threshold value, then illustrates that the internal resistance increment of this battery unit is substantially abnormal, so to calculate institute
Reduce the weight of the battery unit during the heat increment for stating power battery pack.Specifically, typically, power is being calculated
During the heat increment of battery pack, the shared weight of each battery unit is identical, if there is some battery unit
The differences of average value of internal resistance increment of internal resistance increment and other cell voltages be more than the threshold value, then can calculate power
During the heat increment of battery pack, reduce the weight of the battery unit, such as：The weight of the battery unit is reduced 50%.Citing
For, when the heat increment using the heat increment, then read group total power battery pack for first calculating each battery unit respectively
Mode when, in the heat increment of power battery pack described in read group total, by the obvious abnormal battery unit of internal resistance increment
The weight of heat increment reduces 50%.When the internal resistance increment using first read group total power battery pack, then calculate described dynamic again
It is in the internal resistance increment of power battery pack described in read group total, internal resistance increment is bright during the mode of the heat increment of power battery pack
The weight for showing the internal resistance increment of abnormal battery unit reduces 50%.Really, other conventional numerical value filtering sides can also be passed through
Method, reduces influence of the heat increment of abnormal battery unit to battery pack heat increment.In the present embodiment, power electric is being calculated
During the heat increment of pond group, drop power processing is carried out to the obvious abnormal battery unit of internal resistance increment, power can be improved
The accuracy in computation of battery pack heat increment.
Step 104, the power of the power battery pack is controlled according to the heat increment of the power battery pack.
, can be according to the heat after calculating obtains the heat increment of the power battery pack based on abovementioned steps 103
Increment is controlled to the power of power battery pack.Wherein, the power of power battery pack is controlled and can included：Increase or
Reduce output and/or the input power of power battery pack.
Specifically, in this step, it can first judge whether the heat increment of the power battery pack is more than or equal to preset
Safe heat threshold, when the power battery pack heat increment be more than or equal to the safe heat threshold when, illustrate currently
The heat of power battery pack is too high, is likely to result in potential safety hazard, so can now reduce the power output of power battery pack,
Such as：The ratio in vehicle power source is adjusted, the power produced by control motor reduction power cell of vehicle group, control is started
Power produced by machine increase gasoline.Again such as：When power battery pack charges, it can also control to reduce power battery pack
Input power of charging etc..It is, of course, also possible to which control reduces the power output and input power of power battery pack simultaneously, to reduce
Heat, it is ensured that safety.
The application can calculate the heat increment of power cell of vehicle group it can be seen from above description, then according to heat
Measure increment and Power Control carried out to power battery pack, improve the accuracy of Power Control, give full play to the performance of power battery pack,
And ensure safety.
Embodiment with the Poewr control method of aforementioned vehicle power battery pack is corresponding, dynamic present invention also provides vehicle
The embodiment of the output control device of power battery pack.
Fig. 2 is a kind of structure of the output control device of power cell of vehicle group shown in the exemplary embodiment of the application one
Schematic diagram.
Fig. 2 is refer to, the output control device 200 of the application power cell of vehicle group can include：Detection module 201,
First computing module 202, the second computing module 203 and power control module 204.
Wherein, the function of the detection module 201, the first computing module 202 and the second computing module 203 can be by car
Battery management system realize that the function of the power control module 204 can have the motor and/or engine of vehicle
Management system realize.
Specifically, the detection module 201, for detecting the current voltage of one or more battery unit and described dynamic
The electric current of power battery pack；
First computing module 202, for one or more of according to the current voltage and the Current calculation
The internal resistance increment of battery unit；
Second computing module 203, for the internal resistance increment according to one or more of battery units and described
The heat increment of power battery pack described in Current calculation；
The power control module 204, for according to the heat increment of the power battery pack to the power battery pack
Power be controlled.
Optionally, first computing module 202, current voltage and the power with specific reference to the battery unit
The current internal resistance of battery unit described in the Current calculation of battery pack；
Obtain the corresponding expected internal resistance of use time of battery unit described in current time；
The difference of the current internal resistance of the battery unit and the expection internal resistance of the battery unit is calculated, to obtain the electricity
The internal resistance increment of pool unit.
Optionally, first computing module 202, specifically obtains the corresponding expection of current charge volume of the battery unit
Voltage；
For the battery unit, the current voltage and the difference of the expection voltage are calculated, to obtain the battery
The voltage increment of unit；
The business of the voltage increment and the current flow is calculated, to obtain the internal resistance increment of the battery unit.
Optionally, the power control module 204, specifically judge the power battery pack heat increment whether be more than etc.
In default safe heat threshold；When the heat increment of the power battery pack is more than or equal to default safe heat threshold,
Reduce the power output and/or input power of the power battery pack.
Second computing module 203, specifically any battery unit internal resistance increment and other battery units internal resistance
When the difference of the average value of increment is more than default threshold value, reduce during the heat increment of the power battery pack is calculated
The weight of the battery unit.
The function of unit and the implementation process of effect specifically refer to correspondence step in the above method in said apparatus
Implementation process, will not be repeated here.
For device embodiment, because it corresponds essentially to embodiment of the method, so related part is real referring to method
Apply the part explanation of example.Device embodiment described above is only schematical, wherein described be used as separating component
The unit of explanation can be or may not be physically separate, and the part shown as unit can be or can also
It is not physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Selection some or all of module therein is needed to realize the purpose of application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, you can to understand and implement.
The preferred embodiment of the application is the foregoing is only, not to limit the application, all essences in the application
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of the application protection.
Claims (10)
1. a kind of Poewr control method of power cell of vehicle group, the power battery pack includes one or more battery unit,
Characterized in that, methods described includes：
Detect the current voltage of one or more battery unit and the electric current of the power battery pack；
According to the current voltage and the internal resistance increment of the one or more of battery units of the Current calculation；
The heat of power battery pack according to the internal resistance increment and the Current calculation of one or more of battery units
Increment；
The power of the power battery pack is controlled according to the heat increment of the power battery pack.
2. according to the method described in claim 1, it is characterised in that described according to the current voltage and Current calculation institute
The internal resistance increment of battery unit is stated, including：
Battery unit is current according to the current voltage of the battery unit and the Current calculation of the power battery pack
Internal resistance；
Obtain the corresponding expected internal resistance of use time of battery unit described in current time；
The difference of the current internal resistance of the battery unit and the expection internal resistance of the battery unit is calculated, to obtain the battery list
The internal resistance increment of member.
3. according to the method described in claim 1, it is characterised in that described according to the current voltage and Current calculation institute
The internal resistance increment of battery unit is stated, including：
Obtain the corresponding expection voltage of current charge volume of the battery unit；
For the battery unit, the current voltage and the difference of the expection voltage are calculated, to obtain the battery unit
Voltage increment；
The business of the voltage increment and the current flow is calculated, to obtain the internal resistance increment of the battery unit.
4. according to the method described in claim 1, it is characterised in that the heat increment according to the power battery pack is to institute
The power for stating power battery pack is controlled, including：
Judge whether the heat increment of the power battery pack is more than or equal to default safe heat threshold；
When the heat increment of the power battery pack is more than or equal to default safe heat threshold, reduce the power battery pack
Power output and/or input power.
5. according to the method described in claim 1, it is characterised in that the internal resistance according to one or more of battery units
The heat increment of power battery pack described in increment and the Current calculation, including：
When the internal resistance increment of any battery unit and the difference of the average value of the internal resistance increment of other battery units are more than default
During threshold value, reduce the weight of the battery unit during the heat increment of the power battery pack is calculated.
6. a kind of power control system of power cell of vehicle group, it is characterised in that the system includes：
Detection module, for detecting the current voltage of one or more battery unit and the electric current of the power battery pack；
First computing module, for according in the current voltage and the one or more of battery units of the Current calculation
Hinder increment；
Second computing module, for described in the internal resistance increment and the Current calculation according to one or more of battery units
The heat increment of power battery pack；
Power control module, is controlled for the heat increment according to the power battery pack to the power of the power battery pack
System.
7. system according to claim 6, it is characterised in that
First computing module, the galvanometer of current voltage and the power battery pack with specific reference to the battery unit
Calculate the current internal resistance of the battery unit；
Obtain the corresponding expected internal resistance of use time of battery unit described in current time；
The difference of the current internal resistance of the battery unit and the expection internal resistance of the battery unit is calculated, to obtain the battery list
The internal resistance increment of member.
8. system according to claim 6, it is characterised in that
First computing module, specifically obtains the corresponding expection voltage of current charge volume of the battery unit；
For the battery unit, the current voltage and the difference of the expection voltage are calculated, to obtain the battery unit
Voltage increment；
The business of the voltage increment and the current flow is calculated, to obtain the internal resistance increment of the battery unit.
9. system according to claim 6, it is characterised in that
The power control module, specifically judges whether the heat increment of the power battery pack is more than or equal to default safety heat
Measure threshold value；When the heat increment of the power battery pack is more than or equal to default safe heat threshold, reduce the power electric
The power output and/or input power of pond group.
10. system according to claim 6, it is characterised in that
Second computing module, specifically in the internal resistance increment of any battery unit and putting down for the internal resistance increment of other battery units
When the difference of average is more than default threshold value, the battery list is reduced during the heat increment of the power battery pack is calculated
The weight of member.
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| CN112230152B (en) * | 2019-09-30 | 2024-03-12 | 蜂巢能源科技有限公司 | Method and system for measuring internal resistance increment of single battery cell |
| CN114137415A (en) * | 2021-11-02 | 2022-03-04 | 广州小鹏汽车科技有限公司 | Method and device for detecting calorific value of battery pack, vehicle, and storage medium |
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|---|---|---|---|---|
| CN102035223A (en) * | 2009-09-29 | 2011-04-27 | 旭隼科技股份有限公司 | Output power tracking control method and device |
| CN102859836A (en) * | 2010-04-28 | 2013-01-02 | 丰田自动车株式会社 | Device for controlling and method for controlling charging of secondary battery |
| CN104766940A (en) * | 2015-04-09 | 2015-07-08 | 观致汽车有限公司 | Method for protecting battery pack by virtue of power limitation |
| WO2015112777A1 (en) * | 2014-01-22 | 2015-07-30 | Flamestower, Inc. | Apparatus and method for providing electrical power from a variable power source to an electronic device |
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2015
- 2015-08-17 CN CN201510504414.2A patent/CN105206881B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035223A (en) * | 2009-09-29 | 2011-04-27 | 旭隼科技股份有限公司 | Output power tracking control method and device |
| CN102859836A (en) * | 2010-04-28 | 2013-01-02 | 丰田自动车株式会社 | Device for controlling and method for controlling charging of secondary battery |
| WO2015112777A1 (en) * | 2014-01-22 | 2015-07-30 | Flamestower, Inc. | Apparatus and method for providing electrical power from a variable power source to an electronic device |
| CN104766940A (en) * | 2015-04-09 | 2015-07-08 | 观致汽车有限公司 | Method for protecting battery pack by virtue of power limitation |
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