CN106505258A - Battery temperature computational methods and device in a kind of electrokinetic cell bag - Google Patents
Battery temperature computational methods and device in a kind of electrokinetic cell bag Download PDFInfo
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- CN106505258A CN106505258A CN201610851024.7A CN201610851024A CN106505258A CN 106505258 A CN106505258 A CN 106505258A CN 201610851024 A CN201610851024 A CN 201610851024A CN 106505258 A CN106505258 A CN 106505258A
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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 present invention provides battery temperature computational methods and device in a kind of electrokinetic cell bag, and wherein, methods described includes：According to the battery electrode column temperature of measurement, judge the moment that this battery electrode column temperature changes, and obtain the time interval at the moment changed with last battery electrode column temperature；Calculated in the time interval respectively, the caloric value and heat dissipation capacity of inside battery and battery electrode column；According to the caloric value and heat dissipation capacity of the inside battery and battery electrode column for calculating, the temperature gap between the moment inside battery and battery electrode column that this battery electrode column temperature changes is calculated；According to moment that this battery electrode column temperature changes corresponding battery electrode column temperature, and the temperature gap etc., moment that this battery electrode column temperature changes corresponding internal temperature of battery is obtained.The present invention passes through the moment for judging internal temperature of battery change, can be that more accurately temperature parameter is input into for the offer such as battery life predicting, battery bag heat management.
Description
Technical field
Battery temperature computational methods and dress in technical field of new energy of the present invention, more particularly to a kind of electrokinetic cell bag
Put.
Background technology
The utilization temperature influence of new-energy automobile, wherein critical component electrokinetic cell temperature influence are notable.Electricity
The state-of-charge (State of Charge, SOC) in pond, health status (State of Health, SOH) and battery core life-span etc.
Assessment is required to accurate battery temperature with prediction and supports, and this battery temperature is the temperature of inside battery active substance.In electricity
During the utilization of Chi Bao, the temperature sensor for measuring battery temperature can only be arranged in outside batteries, such as at the pole of battery.Dynamic
Power battery thermal management field concern is primarily with the operating temperature range and temperature contrast of each battery bag in battery bag.Likewise,
These temperature values refer both to the temperature of inside battery active substance.And if with the actually measured temperature of battery external temperature sensor
Value will produce larger error as the input of battery thermal management.
In new forms of energy car actual motion, battery temperature is distributed for one in the battery, now measured temperature value and institute
Need to battery temperature there is difference, after obtaining this difference by estimate inside battery active matter from measured temperature exactly
The temperature of matter.
For the distribution of internal temperature of battery, mainly there are as below methods for existing technology：
(1) three-dimensional emulation method based on Fluid Mechanics Computation
The method is mainly by simplified for the battery bag physical model of reality laggard CFD analyses.The major advantage of this method
Be know each battery core heating in battery bag, set up opposite fine inside battery model and accurately set up out correlation radiating and
After heating model, the interior temperature distribution of battery can be obtained by Fluid Mechanics Computation and Finite Element Method.But, the method
The Temperature Distribution of battery can only be analyzed with offline mode, the phantom of battery bag is set up, it is impossible to the analysis of real-time online ground,
And it is more to take resource, it is impossible to feed back battery temperature in real time.
(2) the one-dimensional emulation mode based on the thermal resistance model of battery
The method is simplified on the basis of above-mentioned three-dimensional emulation method.Model after simplification considers heat in battery
Internal generation and transmittance process, by each object on bang path be simplified to after its thermal conductivity and thermal capacitance is considered thermal resistance and
Thermal capacitance, the method that is then analyzed using similar circuit are analyzed to the thermal behavior inside battery bag.However, simplify after thermal resistance and
Heat capacity ratio is more, and form is more complicated, wherein needs scalar quantity many.
(3) temperature estimation based on air hot-fluid method
The method estimates the internal temperature of battery using the energy variation of battery and the energy variation of air.Remove initial
Value has been used outside the measurement temperature of battery, and other are estimated value, and the error of estimation is easily accumulated, and does not account for existing
Situation during external heat.
Content of the invention
The technical problem to be solved is, there is provided a kind of calculate the simple and high electrokinetic cell bag of accuracy
Interior battery temperature computational methods and device.
In order to solve above-mentioned technical problem, the present invention provides battery temperature computational methods in a kind of electrokinetic cell bag, including：
Step S1, according to the battery electrode column temperature of measurement, judges the moment that this battery electrode column temperature changes, and obtains
Take the time interval at the moment changed with last battery electrode column temperature；
Step S2, is calculated in the time interval, the caloric value and heat dissipation capacity of inside battery and battery electrode column respectively；
Step S3, according to the caloric value and heat dissipation capacity of the inside battery and battery electrode column for calculating, calculates at this
Temperature gap between moment inside battery that primary cell pole temperature changes and battery electrode column；
Step S4, the moment that this battery electrode column temperature is changed corresponding battery electrode column temperature, with described in institute
State the temperature gap in time interval between inside battery and battery electrode column, the moment that last battery electrode column temperature changes
The influence value summation of the temperature gap between inside battery and battery electrode column, obtain that this battery electrode column temperature changes when
Carve corresponding internal temperature of battery.
Wherein, step S1 is specifically included：When the difference of the battery electrode column measured temperature for measuring twice in front and back exceedes
Battery electrode column measurement temperature change step, and after maintaining setting time, then judge that battery electrode column temperature changes, and record
At the moment that moment now changes as this battery electrode column temperature, then deduct last battery electrode column temperature and become
At the moment of change, obtain the time interval at moment changed with last battery electrode column temperature.
Wherein, the battery electrode column measurement temperature change step is 1 DEG C, and the scope of the setting time is 20 seconds to 50
Second.
Wherein, methods described also includes：
By the difference of the measured value of battery electrode column temperature is multiplied by the half of battery electrode column temperature change step-length twice in front and back, then
Plus the measured value of front one-shot battery pole temperature, moment that this battery electrode column temperature changes corresponding battery pole is obtained
Column temperature.
Wherein, in step S2, the calculation of the battery-heating amount is：Battery ohm heat amount is opened with battery
Heat amount summation during the change in voltage of road, then sample period time step-length is multiplied by, and calculating is accumulated in the time interval.
Wherein, in step S2, the calculation of the battery electrode column caloric value is：Battery operated electric current square is taken advantage of
With the contact resistance value of battery electrode column, and calculating is accumulated in the time interval.
Wherein, if at a time opening heating, step S2 also includes the accumulative heating for calculating heating process
Measure, its calculation is：Heating finish time deducts heating initial time, then is multiplied by heating power.
Wherein, step S3 is specifically included：By inside battery caloric value in the time interval and heat dissipation capacity sum with
The ratio of the thermal capacitance of battery in the time interval, add in the time interval battery electrode column caloric value and heat dissipation capacity it
And the ratio with the thermal capacitance of battery electrode column in the time interval, obtain when this battery electrode column temperature changes
Temperature gap between inside battery and battery electrode column.
Wherein, step S3 is specifically included：By inside battery caloric value, heat dissipation capacity and heating in the time interval
The accumulative heating amount sum of process and the ratio of the thermal capacitance of battery in the time interval, add electric in the time interval
Pond pole caloric value and heat dissipation capacity sum and the ratio of the thermal capacitance of battery electrode column in the time interval, obtain in this primary cell
Temperature gap between moment inside battery that pole temperature changes and battery electrode column.
The present invention also provides battery temperature computing device in a kind of electrokinetic cell bag, including：
Acquiring unit, for the battery electrode column temperature according to measurement, judge that this battery electrode column temperature changes when
Carve, and obtain the time interval at the moment changed with last battery electrode column temperature；
Computing unit, for being calculated in the time interval respectively, the caloric value of inside battery and battery electrode column and
Heat dissipation capacity；And the caloric value and heat dissipation capacity according to the inside battery and battery electrode column for calculating, calculate in this primary cell
Temperature gap between moment inside battery that pole temperature changes and battery electrode column；And by this battery electrode column temperature
Moment for changing corresponding battery electrode column temperature, with described in the time interval between inside battery and battery electrode column
Temperature gap, temperature gap between the moment inside battery that changes of last battery electrode column temperature and battery electrode column
Influence value is sued for peace, and obtains moment that this battery electrode column temperature changes corresponding internal temperature of battery.
The beneficial effect of the embodiment of the present invention is：
The present invention can be integrated in existing battery management system, by actually measuring the battery pole for obtaining in engineering
The mutation analysises of column temperature, judge the moment for changing internal temperature of battery predictive value, are battery life predicting, battery bag heat pipe
Reason etc. provides more accurately temperature parameter input；
The temperature value measured based on battery electrode column can not directly represent the internal temperature of battery, but battery be one whole
Body, regardless of the type of cooling, the change of temperature at battery electrode column can go out inside battery change, institute of the present invention with indirect reaction
Propose analysis battery electrode column and be applied to liquid cooling and air-cooled different operating modes from the poor method for distinguishing of internal temperature of battery, for battery
When group does not work, i.e., battery can also relatively accurately predict the temperature of inside battery in radiating state；
It is not to update in each sampling period to the renewal of internal temperature of battery, but determines by practical situation, subtracts
Resource occupation is lacked.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of battery temperature computational methods in a kind of one electrokinetic cell bag of the embodiment of the present invention.
Specific embodiment
The explanation of following embodiment is refer to the attached drawing, can be in order to the specific embodiment implemented in order to the example present invention.
Refer to shown in Fig. 1, the embodiment of the present invention one provides battery temperature computational methods in a kind of electrokinetic cell bag, wrap
Include：
Step S1, according to the battery electrode column temperature of measurement, judges the moment that this battery electrode column temperature changes, and obtains
Take the time interval at the moment changed with last battery electrode column temperature；
Step S2, is calculated in the time interval, the caloric value and heat dissipation capacity of inside battery and battery electrode column respectively；
Step S3, according to the caloric value and heat dissipation capacity of the inside battery and battery electrode column for calculating, calculates at this
Temperature gap between moment inside battery that primary cell pole temperature changes and battery electrode column；
Step S4, the moment that this battery electrode column temperature is changed corresponding battery electrode column temperature, with described in institute
State the temperature gap in time interval between inside battery and battery electrode column, the moment that last battery electrode column temperature changes
The influence value summation of the temperature gap between inside battery and battery electrode column, obtain that this battery electrode column temperature changes when
Carve corresponding internal temperature of battery.
The embodiment of the present invention judges the change moment of battery electrode column temperature by battery electrode column measurement temperature changing value, and
The time interval for changing the moment with last battery electrode column measurement temperature is derived from, then to the battery in this time interval
The heating of pole and inside battery, heat dispersal situations carry out statistical analysiss, obtain the inside battery and battery pole at aforementioned change moment
The changing value of column temperature difference.
As battery electrode column temperature is the physical quantity of an actual measurement, in actual measurement process, there is measurement fluctuation and measurement essence
Degree problem, fluctuates such as between 0.001～0.002 DEG C, and this value is made approximate by the present embodiment, i.e., battery electrode column measurement temperature is set
Put change step Tstep, general change step TstepCan meet for 1 DEG C and require that (the pole temperature for being exactly briefly measurement is with 1
DEG C be change interval).After change step has been set, the precision of measured battery electrode column temperature also can be justified accordingly
Whole.
When the battery electrode column temperature that is surveyed is from Tbar(i-1) T is changing intobar(i), and T after setting timebar(i)≠
Tbar(i-1) still set up, then judge that battery electrode column temperature changes, record this moment t1_end.TbarAnd T (i-1)bar(i) point
Not Wei battery electrode column temperature twice in front and back measured value, according to battery electrode column measurement temperature change step T of aforementioned settingstep
(the present embodiment is set to 1 DEG C), then TbarAnd T (i-1)barI the difference between () is more than 1 DEG C, and this difference is when maintaining to set
Between after, that is, judge battery electrode column temperature change.The purpose for arranging setting time is to ensure that the temperature stabilization of measurement, and not
It is because that accidental fluctuation causes error in judgement.In general, the scope of setting time can be arranged between 20 seconds to 50 seconds.
Before the moment t1_end that this battery electrode column temperature changes, the last measured value judgement by battery electrode column temperature
The moment that battery electrode column temperature changes is designated as t0_end, then before and after battery electrode column temperature changes twice moment when
Between interval of delta t=t1_end-t0_end.Certainly, changed if the t1_end moment is battery electrode column temperature for the first time, Δ
T=t1_end-t_start, t_start are the moment under original state, for ease of calculating next time, need t_start=
T1_end reset initial times.
The moment t1_end that this battery electrode column temperature changes is designated as k, k moment battery electrode column temperature Tbar(k) by
Following formula (1) calculates：
Tbar(k)=Tbar(i-1)+[Tbar(i-1)-Tbar(i)]×Tstep×0.5 (1)
Will before and after the difference of the measured value of battery electrode column temperature twice be multiplied by the half of battery electrode column temperature change step-length,
Along with the measured value of front one-shot battery pole temperature, k moment battery electrode column temperature T can be arrivedbar(k).It should be noted that front
The measured value for stating battery electrode column temperature is mainly used in the change moment for judging battery electrode column temperature, in the battery pole at the change moment
Column temperature TbarK () is then calculated to substitute observed temperature by formula (1), partly in order to the impact that fluctuates during measurement is eliminated, separately
On the one hand it is to try one's best under the temperature accuracy of consideration accurately, the moment temperature of temperature just bounce is to be close to the temperature before and after beating after all
The meansigma methodss of degree.
After the time interval Δ t that step S1 obtains battery electrode column temperature change twice, calculate battery in step s 2 and send out
Heat Qinner, battery electrode column caloric value Qbar, while consideration both heat dissipation capacities Q in this time intervalbar_dis、
Qinner_dis.
Wherein, battery-heating amount QinnerCalculation as follows：
Wherein, OCV andBattery open circuit voltage and open-circuit voltage at respectively corresponding a certain temperature and SOC is to temperature
Change sensitivity, tsampleFor sample period time step-length, what (OCV-U) × I was represented is battery ohm heat amount (for not
Can backheating), andHeat amount (for can backheating) when representing that battery open circuit voltage changes.Sample period time step-length
tsampleIt is traditionally arranged to be 1 second.
Battery electrode column caloric value QbarCalculation as follows：
Qbar=Qbar+I2×Rcontact(3)
Wherein, RcontactContact resistance value for battery electrode column.
It should be noted that battery-heating amount QinnerAnd battery electrode column caloric value QbarWithin each sampling period it is
Accumulation is calculated, after the time interval Δ t that step S1 obtains battery electrode column temperature change twice, you can is obtained and is passed through in Δ t
Battery-heating amount Q that accumulation is calculatedinnerAnd battery electrode column caloric value Qbar.Certainly, calculated according to formula (2), (3), need to remember
Moment t_start under the lower original state of record, battery electrode column temperature T that is surveyedbar_ 0, the SOC of battery, running voltage U, battery
Operating current I, ambient temperature TambEtc. information, calculating is all based on the value at a moment and is iterated.
If additionally, at a time opening heating, record heats initial time theat_s, and at the end of heating
Record heating finish time theat_e, calculate accumulative heating amount Q of heating processheat.Calculation is as follows：
Qheating=P × (theat_e-theat_s) (4)
Battery electrode column heat dissipation capacity Qbar_disCalculated by following formula：
Wherein, TambFor ambient temperature, hbarFor at battery electrode column with the cross-ventilation coefficient of heat transfer, kradiFor battery electrode column
Heat emissivity coefficient.
Inside battery heat dissipation capacity Qinner_disRaw heat loss is led in main consideration heat conduction, is calculated as follows：
Qinner_dis=[Tinner(k-1)-Tamb]×hcell×Δt (6)
The inside battery obtained according to step S2 and the caloric value and heat dissipation capacity of battery electrode column, are calculated as follows at this
Temperature gap between moment inside battery that battery electrode column temperature changes and battery electrode column：
Wherein, cpcell、cpbarThe specific heat of respectively battery and pole, mcell、mbarThe quality of respectively battery and pole.
That is, the meter of the temperature gap between the moment inside battery and battery electrode column that this battery electrode column temperature changes
Calculation mode is：Heat by inside battery caloric value in the time interval and heat dissipation capacity sum and battery in the time interval
The ratio of appearance, adds battery electrode column caloric value and heat dissipation capacity sum and battery in the time interval in the time interval
The ratio of the thermal capacitance of pole.
If there is heating process as the aforementioned, then the moment inside battery that changes in this battery electrode column temperature with
The calculation of the temperature gap between battery electrode column is：By inside battery caloric value in the time interval, heat dissipation capacity and
The accumulative heating amount sum of heating process and the ratio of the thermal capacitance of battery in the time interval, add in the time interval
The ratio of interior battery electrode column caloric value and heat dissipation capacity sum and the thermal capacitance of battery electrode column in the time interval.
The internal temperature of the last battery for being calculated current time by formula below：
Wherein, Tinner(k) be k moment internal temperature of battery, TbarK () is k moment battery electrode column temperature, Δ T (k-1) is
Battery electrode column and the temperature gap of inside battery that the k-1 moment is calculated, k1、k2Change for last battery electrode column temperature
Moment impact coefficient of the temperature difference to this temperature difference, obtained by demarcation.
That is the calculation of the internal temperature of battery is：Moment that this battery electrode column temperature is changed corresponding electricity
Pond pole temperature, with the temperature gap in the time interval between inside battery and battery electrode column, on once battery
The influence value summation of the temperature gap between moment inside battery that pole temperature changes and battery electrode column.
Corresponding to battery temperature computational methods in a kind of one electrokinetic cell bag of the embodiment of the present invention, the embodiment of the present invention two is carried
For battery temperature computing device in a kind of electrokinetic cell bag, including：
Acquiring unit, for the battery electrode column temperature according to measurement, judge that this battery electrode column temperature changes when
Carve, and obtain the time interval at the moment changed with last battery electrode column temperature；
Computing unit, for being calculated in the time interval respectively, the caloric value of inside battery and battery electrode column and
Heat dissipation capacity；And the caloric value and heat dissipation capacity according to the inside battery and battery electrode column for calculating, calculate in this primary cell
Temperature gap between moment inside battery that pole temperature changes and battery electrode column；And by this battery electrode column temperature
Moment for changing corresponding battery electrode column temperature, with described in the time interval between inside battery and battery electrode column
Temperature gap, temperature gap between the moment inside battery that changes of last battery electrode column temperature and battery electrode column
Influence value is sued for peace, and obtains moment that this battery electrode column temperature changes corresponding internal temperature of battery.
By described above, implement the beneficial effect that brings of the invention and be：
The present invention can be integrated in existing battery management system, by actually measuring the battery pole for obtaining in engineering
The mutation analysises of column temperature, judge the moment for changing internal temperature of battery predictive value, are battery life predicting, battery bag heat pipe
Reason etc. provides more accurately temperature parameter input；
The temperature value measured based on battery electrode column can not directly represent the internal temperature of battery, but battery be one whole
Body, regardless of the type of cooling, the change of temperature at battery electrode column can go out inside battery change, institute of the present invention with indirect reaction
Propose analysis battery electrode column and be applied to liquid cooling and air-cooled different operating modes from the poor method for distinguishing of internal temperature of battery, for battery
When group does not work, i.e., battery can also relatively accurately predict the temperature of inside battery in radiating state；
It is not to update in each sampling period to the renewal of internal temperature of battery, but determines by practical situation, subtracts
Resource occupation is lacked.
Above disclosed is only present pre-ferred embodiments, can not limit certainly the right model of the present invention with this
Enclose, the equivalent variations that is therefore made according to the claims in the present invention, still belong to the scope covered by the present invention.
Claims (10)
1. battery temperature computational methods in a kind of electrokinetic cell bag, including：
Step S1, according to the battery electrode column temperature of measurement, judges the moment that this battery electrode column temperature changes, and obtain with
The time interval at the moment that last battery electrode column temperature changes；
Step S2, is calculated in the time interval, the caloric value and heat dissipation capacity of inside battery and battery electrode column respectively；
Step S3, according to the caloric value and heat dissipation capacity of the inside battery and battery electrode column for calculating, calculates in this electricity
Temperature gap between moment inside battery that pond pole temperature changes and battery electrode column；
Step S4, the moment that this battery electrode column temperature is changed corresponding battery electrode column temperature, with described when described
Between temperature gap between inside battery and battery electrode column, last battery electrode column temperature change in interval moment battery
The influence value summation of the temperature gap between internal and battery electrode column, obtains the moment pair that this battery electrode column temperature changes
The internal temperature of battery that answers.
2. method according to claim 1, it is characterised in that step S1 is specifically included：When measured twice in front and back
The difference of battery electrode column measured temperature exceedes battery electrode column measurement temperature change step, and after maintaining setting time, then sentences
Determine battery electrode column temperature to change, and record the moment that the moment now changes as this battery electrode column temperature, so
Deduct the moment that last battery electrode column temperature changes afterwards, obtain the moment changed with last battery electrode column temperature
Time interval.
3. method according to claim 2, it is characterised in that the battery electrode column measurement temperature change step is 1 DEG C, institute
The scope for stating setting time is 20 seconds to 50 seconds.
4. method according to claim 1, it is characterised in that also include：
By the difference of the measured value of battery electrode column temperature is multiplied by the half of battery electrode column temperature change step-length twice in front and back, add
The measured value of front one-shot battery pole temperature, obtains moment that this battery electrode column temperature changes corresponding battery pole column temperature
Degree.
5. method according to claim 4, it is characterised in that in step S2, the calculating side of the battery-heating amount
Formula is：Heat amount summation when battery ohm heat amount is changed with battery open circuit voltage, then sample period time step-length is multiplied by,
And calculating is accumulated in the time interval.
6. method according to claim 5, it is characterised in that in step S2, the meter of the battery electrode column caloric value
Calculation mode is：The contact resistance value for square being multiplied by battery electrode column of battery operated electric current, and accumulation meter in the time interval
Calculate.
7. method according to claim 6, it is characterised in that if at a time opening heating, step S2
Also include that the accumulative heating amount for calculating heating process, its calculation are：Heating finish time deducts heating initial time, then takes advantage of
With heating power.
8. the method according to claim 1 or 6, it is characterised in that step S3 is specifically included：By the time interval
Interior inside battery caloric value and heat dissipation capacity sum and the ratio of the thermal capacitance of battery in the time interval, added in the time
In interval, battery electrode column caloric value and heat dissipation capacity sum and the ratio of the thermal capacitance of battery electrode column in the time interval, obtain
Temperature gap between moment inside battery that this battery electrode column temperature changes and battery electrode column.
9. method according to claim 7, it is characterised in that step S3 is specifically included：By in the time interval
The thermal capacitance of the accumulative heating amount sum of inside battery caloric value, heat dissipation capacity and heating process and battery in the time interval
Ratio, add battery electrode column caloric value and heat dissipation capacity sum and battery pole in the time interval in the time interval
The ratio of the thermal capacitance of post, obtains the temperature between the moment inside battery and battery electrode column that this battery electrode column temperature changes
Degree difference.
10. battery temperature computing device in a kind of electrokinetic cell bag, it is characterised in that include：
Acquiring unit, for the battery electrode column temperature according to measurement, judges the moment that this battery electrode column temperature changes, and
Obtain the time interval at the moment changed with last battery electrode column temperature；
Computing unit, for being calculated in the time interval respectively, the caloric value and radiating of inside battery and battery electrode column
Amount；And the caloric value and heat dissipation capacity according to the inside battery and battery electrode column for calculating, calculate in this battery electrode column
Temperature gap between moment inside battery that temperature changes and battery electrode column；And this battery electrode column temperature is occurred
Moment of change corresponding battery electrode column temperature, with the temperature in the time interval between inside battery and battery electrode column
The impact of the temperature gap that spends between difference, the moment inside battery that last battery electrode column temperature changes and battery electrode column
Value summation, obtains moment that this battery electrode column temperature changes corresponding internal temperature of battery.
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| CN108627766A (en) * | 2017-03-21 | 2018-10-09 | 宁德时代新能源科技股份有限公司 | Real-time measurement method for internal temperature of battery core in battery module and battery pack |
| WO2019007218A1 (en) * | 2017-07-03 | 2019-01-10 | Ningbo Geely Automobile Research & Development Co., Ltd. | Thermal Management System |
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| CN110376242A (en) * | 2019-07-16 | 2019-10-25 | 上海理工大学 | A kind of specific heat capacity and radial thermal conductivity test method of cylindrical power battery |
| CN110474128A (en) * | 2019-07-16 | 2019-11-19 | 江苏大学 | A kind of battery module structure and control method based on variable grid |
| CN110501653A (en) * | 2019-07-30 | 2019-11-26 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of battery core method for acquiring temperature, device and control unit for vehicle |
| CN111653851A (en) * | 2020-04-30 | 2020-09-11 | 安徽沃博源科技有限公司 | Battery pack convenient for heat transfer calculation |
| CN111649835A (en) * | 2020-06-08 | 2020-09-11 | 厦门市产品质量监督检验院 | Battery temperature difference prediction method and system |
| WO2020192325A1 (en) * | 2019-03-22 | 2020-10-01 | 东莞新能德科技有限公司 | Temperature compensation method, device having rechargeable battery, and storage medium |
| CN112590763A (en) * | 2020-12-23 | 2021-04-02 | 吉林大学 | Planet series-parallel hybrid electric vehicle energy optimization method based on battery heat and aging |
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