CN109216785A - A kind of high startup temperature method of Li-ion batteries piles - Google Patents
A kind of high startup temperature method of Li-ion batteries piles Download PDFInfo
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- CN109216785A CN109216785A CN201710514193.6A CN201710514193A CN109216785A CN 109216785 A CN109216785 A CN 109216785A CN 201710514193 A CN201710514193 A CN 201710514193A CN 109216785 A CN109216785 A CN 109216785A
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- 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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Automation & Control Theory (AREA)
- Microelectronics & Electronic Packaging (AREA)
Abstract
The present invention provides a kind of high startup temperature method of Li-ion batteries piles, the battery pack includes multiple single batteries, detector, cooling system and controller, the temperature of detector detection single battery, after the battery pack receives enabled instruction, the average cell temperature of the temperature computation single battery for the single battery that controller is detected according to detector, when average cell temperature is below threshold value, starting battery pack work；When average cell temperature is higher than threshold value, start cooling system, average cell temperature is down to threshold value hereinafter, restarting battery pack work.Starting method of the invention can guarantee that battery pack works within the scope of suitable temperature always, improve the safety of battery pack operation, delay battery pack aging, increase cycle life.
Description
Technical field
The present invention relates to battery technology fields, more particularly to a kind of high startup temperature method of Li-ion batteries piles.
Background technique
In recent years, due to facing the pay attention to day by day of the pressure and government and consumer of energy cost for environmental protection, mixing
Power vehicle and electric car cause the attention of numerous car manufacturers.Power battery is being mixed as energy storage device
Abnormal key effect, the performance of performance quality strong influence vehicle are played in power vehicle and electric car.Current is dynamic
Power battery cell can not work normally in the environment of thermal extremes, cause using power battery as the vehicle in energy source at this time
It can not work normally, therefore in order to make vehicle reach the requirement of round-the-clock running, technical staff is that battery pack is configured with cooling system
System.But when automobile stops under high temperature environment, Vehicular battery group can accumulate higher temperature, and ought be in this case
When starting battery pack, then battery pack can bear hot environment in operation early period, increase the risk of battery pack operation and follow
The ring service life.
Summary of the invention
The present invention provides a kind of high startup temperature method of Li-ion batteries piles, and the battery pack includes multiple single batteries,
Detector, cooling system and controller, the temperature of the detector detection single battery, when the battery pack receives starting
After instruction, the average cell temperature of the temperature computation single battery for the single battery that controller is detected according to detector, when average
When battery temperature is below threshold value, starting battery pack work；When average cell temperature is higher than threshold value, start cooling system, it will
Average cell temperature is down to threshold value hereinafter, restarting battery pack work.Starting method of the invention, can guarantee battery pack always
It works within the scope of suitable temperature, improves the safety of battery pack operation, delay battery pack aging, increase cycle life.
Specific scheme is as follows:
A kind of high startup temperature method of Li-ion batteries piles, the battery pack include multiple single batteries, and detector is cooling
System and controller, the temperature of the detector detection single battery, after the battery pack receives enabled instruction, control
The average cell temperature of the temperature computation single battery for the single battery that device is detected according to detector, when average cell temperature is in threshold
When value is following, starting battery pack work；When average cell temperature is higher than threshold value, start cooling system, by average cell temperature
Threshold value is down to hereinafter, restarting battery pack work.
Further, the threshold value is 50-60 DEG C.
Further, the threshold value is 50-55 DEG C.
Further, the cooling system includes liquid cooling system.
A kind of operation method of Li-ion batteries piles, including above-mentioned starting method, the battery detector is also examined
Cell voltage is surveyed, the controller formulates different operational modes；The operational mode includes entire run mode and intelligence fortune
Row mode；In the entire run mode, the single battery is in complete electric discharge by voltage and fully charged by voltage
Between carry out charge and discharge cycles；When battery detector detects that the temperature of single battery is greater than battery pack average cell temperature
When 105-110%, the controller specifies the single battery to run intelligent operation mode；In the intelligent operation mode, institute
State single battery in intelligent charge by voltage and Intelligent discharge by charge and discharge cycles between voltage, the intelligent charge by
Voltage and the Intelligent discharge blanking voltage meet following mathematical expression:
Intelligent charge is by voltage (V)=fully charged by voltage-k* (single battery charging voltage change rate/battery
Group average cell charging voltage change rate)
Intelligent discharge is by voltage (V)=electric discharge completely by voltage+b* (single battery discharge voltage change rate/battery
Group average cell discharge voltage change rate)
K=t* (single battery temperature (DEG C)/battery pack average cell temperature -1)
B=s* (single battery temperature (DEG C)/battery pack average cell temperature -1)
The t is 0.6-0.8；The s is 0.1-0.3.
The invention has the following beneficial effects:
1, before battery pack operation, the temperature of battery pack is adjusted to preference temperature, remains at battery pack suitable
Suitable temperature range operation extends stack operating life to improve the safety of battery pack operation.
2, by specific operation management system, the cyclical voltage section of battery is controlled, the aging of battery is delayed；
3, the operation management system of battery, when the voltage change ratio when cell charging/discharging is higher, reduction/raising is cut
Slow down the aging of battery to voltage to prevent the charge/discharge excessively of battery；
4, different with the degree of aging under low potential under high potential due to battery, battery-based temperature and electricity
Different adjustment is arranged therefore in buckling rate, and the reasonable value range of charge/discharge blanking voltage is calculated.
Specific embodiment
The present invention will be described in more detail below by specific embodiment, but protection scope of the present invention not by
It is limited to these embodiments.
Embodiment 1
Li-ion batteries piles, the battery pack include 100 monomer lithium ion batteries, detector, liquid cooling system and control
Device processed, the temperature and voltage of the detector detection single battery, after the battery pack receives enabled instruction, controller root
According to detector detection single battery temperature computation single battery average cell temperature, when average cell temperature 50 DEG C with
When lower, starting battery pack work；When average cell temperature is higher than 50 DEG C, starts cooling system, average cell temperature is down to
50 DEG C hereinafter, restart battery pack work；The controller formulates different operational modes, and the operational mode includes complete fortune
Row mode and intelligent operation mode；In the entire run mode, the single battery carries out charge and discharge between 2.7-4.2V
Electricity circulation；When battery detector detect single battery temperature be greater than battery pack average cell temperature 105% when, the control
Device processed specifies the single battery to run intelligent operation mode；In the intelligent operation mode, the single battery is filled intelligently
Electricity is by voltage and Intelligent discharge by charge and discharge cycles between voltage, and the intelligent charge is by voltage and the intelligence
Discharge cut-off voltage meets following mathematical expression:
Intelligent charge is by voltage=4.2-k* (single battery charging voltage change rate/battery pack average cell charging electricity
Buckling rate)
Intelligent discharge is by voltage=2.7+b* (single battery discharge voltage change rate/battery pack average cell electric discharge electricity
Buckling rate)
K=0.6* (single battery temperature/battery pack average cell temperature -1)
B=0.1* (single battery temperature/battery pack average cell temperature -1)
Embodiment 2
Li-ion batteries piles, the battery pack include 100 monomer lithium ion batteries, detector, liquid cooling system and control
Device processed, the temperature and voltage of the detector detection single battery, after the battery pack receives enabled instruction, controller root
According to detector detection single battery temperature computation single battery average cell temperature, when average cell temperature 60 DEG C with
When lower, starting battery pack work；When average cell temperature is higher than 60 DEG C, starts cooling system, average cell temperature is down to
60 DEG C hereinafter, restart battery pack work；The controller formulates different operational modes, and the operational mode includes complete fortune
Row mode and intelligent operation mode；In the entire run mode, the single battery carries out charge and discharge between 2.7-4.2V
Electricity circulation；When battery detector detect single battery temperature be greater than battery pack average cell temperature 110% when, the control
Device processed specifies the single battery to run intelligent operation mode；In the intelligent operation mode, the single battery is filled intelligently
Electricity is by voltage and Intelligent discharge by charge and discharge cycles between voltage, and the intelligent charge is by voltage and the intelligence
Discharge cut-off voltage meets following mathematical expression:
Intelligent charge is by voltage=4.2-k* (single battery charging voltage change rate/battery pack average cell charging electricity
Buckling rate)
Intelligent discharge is by voltage=2.7+b* (single battery discharge voltage change rate/battery pack average cell electric discharge electricity
Buckling rate)
K=0.7* (single battery temperature/battery pack average cell temperature -1)
B=0.2* (single battery temperature/battery pack average cell temperature -1)
Embodiment 3
Li-ion batteries piles, the battery pack include 100 monomer lithium ion batteries, detector, liquid cooling system and control
Device processed, the temperature and voltage of the detector detection single battery, after the battery pack receives enabled instruction, controller root
According to detector detection single battery temperature computation single battery average cell temperature, when average cell temperature 55 DEG C with
When lower, starting battery pack work；When average cell temperature is higher than 55 DEG C, starts cooling system, average cell temperature is down to
50-60 DEG C hereinafter, restart battery pack work；The controller formulates different operational modes, and the operational mode has included
Whole operational mode and intelligent operation mode；In the entire run mode, the single battery carries out between 2.7-4.2V
Charge and discharge cycles；When battery detector detect single battery temperature be greater than battery pack average cell temperature 110% when, institute
Stating controller specifies the single battery to run intelligent operation mode；In the intelligent operation mode, the single battery is in intelligence
Can charging by voltage and Intelligent discharge by charge and discharge cycles between voltage, the intelligent charge is by voltage and described
Intelligent discharge blanking voltage meets following mathematical expression:
Intelligent charge is by voltage=4.2-k* (single battery charging voltage change rate/battery pack average cell charging electricity
Buckling rate)
Intelligent discharge is by voltage=2.7+b* (single battery discharge voltage change rate/battery pack average cell electric discharge electricity
Buckling rate)
K=0.8* (single battery temperature/battery pack average cell temperature -1)
B=0.3* (single battery temperature/battery pack average cell temperature -1)
Embodiment 4
Li-ion batteries piles, the battery pack include 100 monomer lithium ion batteries, detector, liquid cooling system and control
Device processed, the temperature and voltage of the detector detection single battery, after the battery pack receives enabled instruction, controller root
According to detector detection single battery temperature computation single battery average cell temperature, when average cell temperature 53 DEG C with
When lower, starting battery pack work；When average cell temperature is higher than 53 DEG C, starts cooling system, average cell temperature is down to
53 DEG C hereinafter, restart battery pack work；The controller formulates different operational modes, and the operational mode includes complete fortune
Row mode and intelligent operation mode；In the entire run mode, the single battery carries out charge and discharge between 2.7-4.2V
Electricity circulation；When battery detector detect single battery temperature be greater than battery pack average cell temperature 105% when, the control
Device processed specifies the single battery to run intelligent operation mode；In the intelligent operation mode, the single battery is filled intelligently
Electricity is by voltage and Intelligent discharge by charge and discharge cycles between voltage, and the intelligent charge is by voltage and the intelligence
Discharge cut-off voltage meets following mathematical expression:
Intelligent charge is by voltage=4.2-k* (single battery charging voltage change rate/battery pack average cell charging electricity
Buckling rate)
Intelligent discharge is by voltage=2.7+b* (single battery discharge voltage change rate/battery pack average cell electric discharge electricity
Buckling rate)
K=0.6* (single battery temperature/battery pack average cell temperature -1)
B=0.3* (single battery temperature/battery pack average cell temperature -1)
Embodiment 5
Li-ion batteries piles, the battery pack include 100 monomer lithium ion batteries, detector, liquid cooling system and control
Device processed, the temperature and voltage of the detector detection single battery, after the battery pack receives enabled instruction, controller root
According to detector detection single battery temperature computation single battery average cell temperature, when average cell temperature 57 DEG C with
When lower, starting battery pack work；When average cell temperature is higher than 57 DEG C, starts cooling system, average cell temperature is down to
57 DEG C hereinafter, restart battery pack work；The controller formulates different operational modes, and the operational mode includes complete fortune
Row mode and intelligent operation mode；In the entire run mode, the single battery carries out charge and discharge between 2.7-4.2V
Electricity circulation；When battery detector detect single battery temperature be greater than battery pack average cell temperature 105% when, the control
Device processed specifies the single battery to run intelligent operation mode；In the intelligent operation mode, the single battery is filled intelligently
Electricity is by voltage and Intelligent discharge by charge and discharge cycles between voltage, and the intelligent charge is by voltage and the intelligence
Discharge cut-off voltage meets following mathematical expression:
Intelligent charge is by voltage=4.2-k* (single battery charging voltage change rate/battery pack average cell charging electricity
Buckling rate)
Intelligent discharge is by voltage=2.7+b* (single battery discharge voltage change rate/battery pack average cell electric discharge electricity
Buckling rate)
K=0.8* (single battery temperature/battery pack average cell temperature -1)
B=0.1* (single battery temperature/battery pack average cell temperature -1)
Comparative example 1
Battery pack system, the battery pack include 100 monomer lithium ion batteries, detector, controller and cooling system
System, the detector detect the temperature of each single battery, and the cooling system includes liquid cooling system, when lists all in battery pack
When the average cell temperature of first battery is higher than 50 DEG C, start liquid cooling system.
Test and result
The system of embodiment 1-5, comparative example 1 are filled in the case where room high-temperature is 45 DEG C of outdoor environment with the electric current of 1C
Discharge cycles are spaced 2h between each cycle period, record the service life of system.As it can be seen that using the electricity of the embodiment of the present invention
Pond group obtains the higher service life.
Table 1
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it would be recognized that above-mentioned
Description be not considered as limitation of the present invention.
Claims (5)
1. a kind of high startup temperature method of Li-ion batteries piles, the battery pack include multiple single batteries, detector, cooling system
System and controller, the temperature of the detector detection single battery, after the battery pack receives enabled instruction, controller
According to the average cell temperature of the temperature computation single battery of the single battery of detector detection, when average cell temperature is in threshold value
When following, starting battery pack work；When average cell temperature is higher than threshold value, starts cooling system, average cell temperature is dropped
To threshold value hereinafter, restarting battery pack work.
2. the method as described in claim 1, the threshold value is 50-60 DEG C.
3. method according to claim 2, the threshold value is 50-55 DEG C.
4. the cooling system includes liquid cooling system such as claim 1 described in any item methods.
5. a kind of operation method of Li-ion batteries piles, including the described in any item starting methods of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514193.6A CN109216785A (en) | 2017-06-29 | 2017-06-29 | A kind of high startup temperature method of Li-ion batteries piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514193.6A CN109216785A (en) | 2017-06-29 | 2017-06-29 | A kind of high startup temperature method of Li-ion batteries piles |
Publications (1)
| Publication Number | Publication Date |
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| CN109216785A true CN109216785A (en) | 2019-01-15 |
Family
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| CN201710514193.6A Withdrawn CN109216785A (en) | 2017-06-29 | 2017-06-29 | A kind of high startup temperature method of Li-ion batteries piles |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866608A (en) * | 2005-05-16 | 2006-11-22 | 比亚迪股份有限公司 | Temperature control system and method for power battery pack of electric vehicle |
| CN101577353A (en) * | 2009-05-07 | 2009-11-11 | 联合汽车电子有限公司 | Automobile battery thermal management system and working method thereof |
| CN202513642U (en) * | 2012-02-09 | 2012-10-31 | 刘先金 | Charger |
| CN103490120A (en) * | 2013-10-21 | 2014-01-01 | 三门峡速达交通节能科技股份有限公司 | Battery heat managing system and method of electric vehicle |
| CN203503758U (en) * | 2013-10-21 | 2014-03-26 | 三门峡速达交通节能科技股份有限公司 | Battery heat management system of electric automobile |
| CN103746150A (en) * | 2013-12-31 | 2014-04-23 | 曙鹏科技（深圳）有限公司 | Lithium iron phosphate battery system |
| CN104466282A (en) * | 2014-11-28 | 2015-03-25 | 观致汽车有限公司 | Storage battery pretreatment method and device |
-
2017
- 2017-06-29 CN CN201710514193.6A patent/CN109216785A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866608A (en) * | 2005-05-16 | 2006-11-22 | 比亚迪股份有限公司 | Temperature control system and method for power battery pack of electric vehicle |
| CN101577353A (en) * | 2009-05-07 | 2009-11-11 | 联合汽车电子有限公司 | Automobile battery thermal management system and working method thereof |
| CN202513642U (en) * | 2012-02-09 | 2012-10-31 | 刘先金 | Charger |
| CN103490120A (en) * | 2013-10-21 | 2014-01-01 | 三门峡速达交通节能科技股份有限公司 | Battery heat managing system and method of electric vehicle |
| CN203503758U (en) * | 2013-10-21 | 2014-03-26 | 三门峡速达交通节能科技股份有限公司 | Battery heat management system of electric automobile |
| CN103746150A (en) * | 2013-12-31 | 2014-04-23 | 曙鹏科技（深圳）有限公司 | Lithium iron phosphate battery system |
| CN104466282A (en) * | 2014-11-28 | 2015-03-25 | 观致汽车有限公司 | Storage battery pretreatment method and device |
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Application publication date: 20190115 |