CN107039708B - A kind of Li-ion batteries piles low temperature self-heating method - Google Patents
A kind of Li-ion batteries piles low temperature self-heating method Download PDFInfo
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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
- H01M10/615—Heating or keeping warm
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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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
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Abstract
The invention discloses a kind of Li-ion batteries piles low temperature self-heating methods, take into account battery aging status and the optimal heating frequency range of SOC based on the smallest principle determination is influenced on battery life；Serial-resonant inverter circuit is designed, the simple sinusoidal alternating current that optimal control strategy makes inverter circuit in battery side output target frequency and target amplitude is explored；Low temperature self-heating is carried out to battery pack using the simple sinusoidal alternating current of resonant mode inverter circuit output, as the battery temperature increases, the internal resistance of cell is gradually reduced, and resonant mode inverter circuit adaptively increases output current amplitude, increase the battery pack rate of heat addition, battery pack is quickly increased to target temperature.The present invention have, cryogenic property fast on Li-ion batteries piles self-heating rate under low temperature improve obvious, self-heating is high-efficient, on lithium ion battery service life without influencing and heating temperature uniformity is good and other effects, will promotion electric car cold district popularization and application.
Description
Technical field
The present invention relates to battery pack technical field of heating, specifically a kind of Li-ion batteries piles low temperature self-heating method,
Espespecially efficient, the reliable low temperature self-heating method of the Li-ion batteries piles on the lithium ion battery service life without influence.
Background technique
The fast development of electric car of energy shortages and the dual-pressure boosting of environmental pollution, lithium ion battery is with monomer
Voltage height, energy density height, service life length, memory-less effect, it is pollution-free the advantages that, become electric powered motor driving first choice electricity
Pond.
However, lithium ion battery delays since inside battery Chemical Kinetics, kinetics of diffusion are obviously sluggish under low temperature
Slowly, increase to internal resistance tenfold, lead to lithium ion battery energy conversion efficiency degradation in cold environment, electric car
Continual mileage and pulse output power decline to a great extent.In addition, lithium ion battery charging is extremely difficult under low temperature, more seriously,
Since side reaction causes cathode to form lithium metal deposition (analysis lithium) rather than lithium ion insertion cathode.Analysis lithium can accelerate battery to decline
It moves back, lithium metal causes inside lithium ion cell short circuit to cause safety hazard, such as thermal runaway it is also possible to puncturing diaphragm.Lithium under low temperature
Ion battery performance degradation affects convenience, economy and safety of the user using electric car when, greatly limits
Electric car has been made in the popularization and use of cold environment.
Therefore, batteries of electric automobile group is carried out being heated as highly important project, outside heating is easily in lithium-ion electric
Formation temperature gradient in the packet of pond, causes Temperature Distribution in battery pack inconsistent, can make certain heat spot accelerated ageing, and most of
Energy is dissipated, and energy utilization efficiency is extremely low.
Heating inside DC current, due to the limitation of the time span and amplitude of the DC current of application, in DC current
Portion's heating will limit rate of heat production and heating efficiency, lead to that the rate of heat addition is slow, low efficiency.
Existing alternating current inside heating method is rarely had for battery pack for monomer lithium ion battery, because
The low temperature self-heating method of this exploitation Li-ion batteries piles is of great significance to the popularization and use of electric car under cold environment.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of Li-ion batteries piles low temperature to add certainly
Hot method can improve the problems such as being difficult to realize battery pack heating or battery pack heating efficiency low, at high cost in the prior art.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of Li-ion batteries piles low temperature self-heating method, includes the following steps:
The EIS of different ageing state batteries, determines the optimal heating frequency of different ageing state batteries under S1, test low temperature
Range；
The EIS of different state-of-charge (SOC) batteries, determines the optimal heating frequency of different SOC batteries under S2, test low temperature
Range；
S3, the range for taking into account the optimal heating frequency of battery aging status and battery SOC is determined；
S4, consider circuit efficiency, control complexity and reliability factor, circuit is occurred to simple sinusoidal alternating current and is selected
Type is determined as serial-resonant inverter circuit；
S5, according to the requirement of optimal heating frequency range and self-heating time, select the frequency and width of simple sinusoidal alternating current
Value designs the main circuit of serial-resonant inverter circuit accordingly, determines each device parameters and switching tube model；
S6, the control circuit for designing serial-resonant inverter circuit, control serial-resonant inverter circuit, guarantee
The simple sinusoidal alternating current of battery side output target frequency and target amplitude；
S7, low temperature self-heating is carried out to battery pack using the simple sinusoidal alternating current of serial-resonant inverter circuit output；
S8, when battery pack temperature reaches target temperature, lockout switch pipe pulse forbids simple sinusoidal alternating current to export.
Based on the above technical solution, in step S5, the switching tube of the serial-resonant inverter circuit is in zero electricity
When stream shutdown with it is open-minded, switching loss is close to 0.
Based on the above technical solution, the switching tube includes IGBT1, IGBT2, IGBT3 and IGBT4.
Based on the above technical solution, main circuit described in step S5 include: IGBT1, IGBT2, IGBT3,
IGBT4, electric capacitor, inductance, equivalent resistance and contactor；The anode of the Li-ion batteries piles is connect with contactor, is contacted
Device is connect with the collector of the collector of IGBT1 and IGBT 2 respectively, and one end of the inductance is separately connected the emitter of IGBT2
With the collector of IGBT4, one end of the other end and electric capacitor is connected, and the other end of the electric capacitor is respectively with IGBT1's
Emitter is connected with the collector of IGBT3, the transmitting with the emitter of IGBT3 and IGBT4 respectively of one end of the equivalent resistance
The cathode of pole connection, the other end and Li-ion batteries piles connects.
Based on the above technical solution, the equivalent resistance is Li-ion batteries piles internal resistance, switching tube internal resistance, inductance
The summation of internal resistance, electric capacitor internal resistance, contactor internal resistance and route internal resistance.
Based on the above technical solution, the contactor is used to control the access and excision of power supply.
Based on the above technical solution, control circuit described in step S6 includes: DSP microcontroller, signal detection
Circuit, driving circuit and protection circuit.
Based on the above technical solution, in step S7, during low temperature self-heating, as the battery temperature increases, electricity
Pond internal resistance is gradually reduced, and serial-resonant inverter circuit adaptively increases the amplitude of simple sinusoidal alternating current, battery pack heating speed
Rate is accelerated.
Based on the above technical solution, the lithium ion battery includes lithium manganate power battery, cobalt acid lithium power electric
The power batteries such as pond, metatitanic acid lithium dynamical battery, lithium iron phosphate dynamic battery and ternary material power battery.
The utility model has the advantages that
1, Li-ion batteries piles low temperature self-heating method of the present invention has and adds certainly to Li-ion batteries piles under low temperature
Hot rate is fast, cryogenic property improvement is obvious, self-heating is high-efficient, equal without influence and heating temperature on lithium ion battery service life
Even property is good and other effects；
2, best heat production frequency is selected, rate of heat production is most fast, and the self-heating time is obviously shortened；
3, battery aging status and battery SOC are taken into account most based on the EIS determination under different ageing states and state-of-charge
Excellent heating frequency range；
4, the serial-resonant inverter circuit designed, switching loss are essentially 0, and battery pack self-heating apparatus is high-efficient；
5, the internal resistance of lithium ion battery significantly reduces after self-heating, and serial-resonant inverter circuit can adaptively increase
The amplitude of big simple sinusoidal alternating current, quickly to improve battery temperature；
6, polarizing voltage of this method to influence lithium ion battery service life selects best heat production frequency as restrictive condition
Rate, so that realization reduces to the maximum extent to lithium ion battery service life on the basis of rapidly heating lithium ion battery
The target of influence；
7, for the heating means from inside lithium ion cell self-heating, internal temperature of lithium ion battery uniformity is good.
Detailed description of the invention
The present invention has following attached drawing:
Fig. 1 is the EIS figure of 35Ah battery difference ageing state at -20 DEG C；
Fig. 2 is the EIS figure of 35Ah battery difference SOC at -20 DEG C；
Fig. 3 is the heat production rate and current ratio figure of the 35Ah battery of different ageing states at -20 DEG C；
Fig. 4 is the heat production rate and current ratio figure of the 35Ah battery of difference SOC at -20 DEG C；
Fig. 5 is serial-resonant inverter circuit schematic diagram；
Fig. 6 is the battery side electric current, inductive current and cell voltage figure of serial-resonant inverter circuit；
Fig. 7 is battery temperature rise figure in heating process；
Fig. 8 is the schematic diagram of battery pack low temperature self-heating method.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of Li-ion batteries piles low temperature self-heating method, includes the following steps:
The EIS of different ageing state batteries, determines the optimal heating frequency of different ageing state batteries under S1, test low temperature
Range；
The EIS of different state-of-charge (SOC) batteries, determines the optimal heating frequency of different SOC batteries under S2, test low temperature
Range；
S3, the range for taking into account the optimal heating frequency of battery aging status and battery SOC is determined；
S4, consider circuit efficiency, control complexity and reliability factor, circuit is occurred to simple sinusoidal alternating current and is selected
Type is determined as serial-resonant inverter circuit；
S5, according to the requirement of optimal heating frequency range and self-heating time, select the frequency and width of simple sinusoidal alternating current
Value designs the main circuit of serial-resonant inverter circuit accordingly, determines each device parameters and switching tube model；
S6, the control circuit for designing serial-resonant inverter circuit, control serial-resonant inverter circuit, guarantee
The simple sinusoidal alternating current of battery side output target frequency and target amplitude；
S7, low temperature self-heating is carried out to battery pack using the simple sinusoidal alternating current of serial-resonant inverter circuit output；
S8, when battery pack temperature reaches target temperature, lockout switch pipe pulse forbids simple sinusoidal alternating current to export.
Based on the above technical solution, in step S5, the switching tube of the serial-resonant inverter circuit is in zero electricity
When stream shutdown with it is open-minded, switching loss is close to 0.
Based on the above technical solution, the switching tube includes IGBT1, IGBT2, IGBT3 and IGBT4.
Based on the above technical solution, main circuit described in step S5 include: IGBT1, IGBT2, IGBT3,
IGBT4, electric capacitor, inductance, equivalent resistance and contactor；The anode of the Li-ion batteries piles is connect with contactor, is contacted
Device is connect with the collector of the collector of IGBT1 and IGBT 2 respectively, and one end of the inductance is separately connected the emitter of IGBT2
With the collector of IGBT4, one end of the other end and electric capacitor is connected, and the other end of the electric capacitor is respectively with IGBT1's
Emitter is connected with the collector of IGBT3, the transmitting with the emitter of IGBT3 and IGBT4 respectively of one end of the equivalent resistance
The cathode of pole connection, the other end and Li-ion batteries piles connects.
Based on the above technical solution, the equivalent resistance is Li-ion batteries piles internal resistance, switching tube internal resistance, inductance
The summation of internal resistance, electric capacitor internal resistance, contactor internal resistance and route internal resistance.
Based on the above technical solution, the contactor is used to control the access and excision of power supply.
Based on the above technical solution, control circuit described in step S6 includes: DSP microcontroller, signal detection
Circuit, driving circuit and protection circuit.
Based on the above technical solution, in step S7, during low temperature self-heating, as the battery temperature increases, electricity
Pond internal resistance is gradually reduced, and serial-resonant inverter circuit adaptively increases the amplitude of simple sinusoidal alternating current, battery pack heating speed
Rate is accelerated.
Based on the above technical solution, the lithium ion battery includes lithium manganate power battery, cobalt acid lithium power electric
The power batteries such as pond, metatitanic acid lithium dynamical battery, lithium iron phosphate dynamic battery and ternary material power battery.
Following specific embodiments are illustrated by taking ternary-LiMn2O4 mixing material power battery as an example.
There are polarizing voltage, polarizing voltage is used to describe the physics and change in battery battery in the charge and discharge process of battery
Process is the electricity of the contact obstruction and sluggishness by limiting in electrolyte with the matter transportation in electrode material solid phase, between solid phase
Caused by chemical reaction.Battery impedance significantly increases under low temperature, if Fig. 1 is 35Ah ternary at -20 DEG C-LiMn2O4 mixing material lithium
EIS figure of the ion battery in different ageing states, as seen from Figure 1, there is no bright for battery impedance and cell degradation
Aobvious relationship.Fig. 2 is EIS figure of the 35Ah ternary-LiMn2O4 mixing material lithium-ion-power cell in different SOC at -20 DEG C,
As seen from Figure 2, the lower battery impedance of SOC is bigger.
In order to achieve the purpose that quickly to heat battery under low temperature, always expectation obtains biggish overpotential and electric current.Polarization
Voltage magnitude is bigger, and electric current is bigger, and during heating, internal rate of heat production is bigger, and correspondingly heating time is shorter.
But excessive polarizing voltage may cause unfavorable situation, as battery terminal voltage causes to overcharge or mistake beyond safe voltage thresholds
It puts, this will cause battery side reaction, and lithium ion is caused to deposit to form Li dendrite or cause inside battery living in negative terminal surface
Property material loss, this will accelerate the decline of battery life.Therefore, constant alternating polarity voltage be realize quickly heat it is excellent
Scheme is selected, battery terminal voltage can be effectively prevented more than safe voltage thresholds, and then can correspondingly count in real time according to battery impedance
Calculate maximum alternating current amplitude.
When battery apply simple sinusoidal alternating current when, only can not backheating need to consider, including ohmic polarization heat, electrochemistry pole
Change heat and diffusion polarization heat, is almost 0 negligible in a simple sinusoidal alternating current period inside irreversible heat, it can not backheating Q
It is represented by
Wherein, Δ V is the peak value of sinusoidal alternating polarity voltage, and w is angular frequency, Re=f (w) indicates real impedance and angular frequency
The functional relation of rate, Z=g (w) indicate the functional relation of battery total impedance and angular frequency, and I is simple sinusoidal alternating current amplitude.
The relationship of battery heat production rate and frequency just can be obtained according to (1) formula, polarizing voltage is bigger, under same impedance,
Electric current will be bigger, and the quantity of heat production of battery is also bigger, and heat production rate with the increase of polarizing voltage with square relationship increase；?
In certain frequency range, heat production rate increases with the increase of frequency；After certain frequency, heat production rate with frequency increase
And it reduces, therefore the optimal frequency most fast there are the rate of heat addition.
To the battery total impedance and real impedance building and the functional relation g (w) and f (w) of angular frequency w in EIS,
The heat production rate in the case where polarizing voltage is certain is calculated in MATLAB (matrix labotstory) software for mathematical computing with the pass of frequency
System.When polarizing voltage is 0.1V, the batteries of different ageing states different frequency heat production rate and current ratio such as Fig. 3, it is low
Although the impedance of frequency area is very big, electric current is smaller, and heat production rate is lower；Near the maximum Frequency point of heat production rate, battery capacity is bigger, electricity
Pond impedance is smaller, and electric current is bigger, and heat production rate is bigger；Heat production rate and current ratio such as figure of the battery of different SOC in different frequency
4, near the maximum Frequency point of heat production rate, smaller by the electric current of battery with the increase of SOC, heat production rate is smaller.
Table 1 is different decline capacity and the maximum heat production analysis of different SOC, with the aging of battery, maximum heat production point
Frequency is gradually increased；With the increase of SOC, the frequency of maximum heat production point is gradually increased.By experiment test it is found that regardless of battery
How much is decline, and no matter each battery SOC of battery pack differs much, all there is the frequency model that a common heat production is greater than 90%
It encloses, selects a frequency that can realize the quick heating to battery pack in the frequency range.That is battery pack is most
Excellent heating frequency and the ageing state of battery, SOC correlation are smaller, so that it is determined that taking into account battery aging status and battery SOC
Optimal heating frequency range.
The maximum heat production analysis of the different decline capacity of table 1 and different SOC batteries
In order to which battery pack is increased to 5 DEG C in 20min from -20 DEG C, should design frequency be 1kHz, peak value is 220A's
Simple sinusoidal alternating current, there are following characteristics for self-heating process:
(1) electric current is larger, should reduce the internal resistance of self-heating apparatus (serial-resonant inverter circuit) to the greatest extent, to reduce damage
Consumption, improves efficiency；
(2) the optimal heating frequency of battery pack changes little with the ageing state and SOC of battery；
(3) as temperature increases, it is gradually increased current amplitude.
Full bridge inverter output simple sinusoidal alternating current amplitude, frequency is adjustable, but the optimal heating frequency of battery pack with
Ageing state and the SOC variation of battery are little；The current amplitude and frequency of serial-resonant inverter circuit output are non-adjustable, by electricity
Inductance, electric capacitor and equivalent internal resistance determine in road, and serial-resonant inverter circuit has the advantage that
(1) circuit switch frequency is low, and switching frequency is the half of sinusoidal AC current frequency；
(2) circuit switch loss is small, it is ensured that switchs in zero current, is natural Sofe Switch；
(3) control is simple, need to only export complementary pulse；
(4) external power supply excitation is not needed；
(5) as temperature increases, the internal resistance of cell reduces, and current amplitude is gradually increased；
According to the actual demand of self-heating, serial-resonant inverter circuit, such as Fig. 5 are selected.It is readily apparent that, when system is always interior
Resistance meetsWhen, LC serial-resonant inverter circuit generates oscillating discharge process, RoFor total internal resistance, L is inductance, and C is
Capacitor.According to target current, the inductance of 16.887uH, maximum current 300A are selected；Select the maximum pressure resistance 500V of capacitor, capacitance
For 500uF, three capacitor parallel connections are obtained into the bipolarity capacitor of 1500uF；Use IPM module (intelligent power module) as opening
Guan Guan, switching frequency control are 500Hz.
Inductive current, battery current and cell voltage such as Fig. 6, battery current peak value in serial-resonant inverter circuit are
324A, valley are -196A, and the current oscillation period is T=0.000966s, and frequency 1035Hz meets design object.
The simple sinusoidal alternating current exported with serial-resonant inverter circuit heats 6 string battery packs, in heating process
6 string battery packs can be heated to 5 DEG C from -20 DEG C in 25 minutes by battery temperature variation such as Fig. 7.
In conclusion the Li-ion batteries piles self-heating method, which may be implemented in 25min, is heated to 5 from -20 DEG C for battery pack
DEG C, battery performance will be obviously improved after self-heating, to solve the problems, such as that low temperature charging hardly possible provides the possibility of Project Realization；Battery pack
Self-heating process show the self-heating method can not only rapidly self-heating battery to suitable services temperature, for realize low temperature
The quick charge of lower no aging effects provides possibility, and illustrates that self-heating apparatus (serial-resonant inverter circuit) works
High efficiency, reliability, will promote electric car cold district popularization and application.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (9)
1. a kind of Li-ion batteries piles low temperature self-heating method, characterized by the following steps:
The EIS of different ageing state batteries, determines the model of the optimal heating frequency of different ageing state batteries under S1, test low temperature
It encloses；
The EIS of different state-of-charge batteries, determines the model of the optimal heating frequency of different state-of-charge batteries under S2, test low temperature
It encloses；
S3, the range for taking into account the optimal heating frequency of battery aging status and battery charge state is determined；
S4, consider circuit efficiency, control complexity and reliability factor, circuit is occurred to simple sinusoidal alternating current and carries out type selecting, really
It is set to serial-resonant inverter circuit；
S5, according to the requirement of optimal heating frequency range and self-heating time, select the frequency and amplitude of simple sinusoidal alternating current, according to
The main circuit of this design serial-resonant inverter circuit, determines each device parameters and switching tube model；
S6, the control circuit for designing serial-resonant inverter circuit, control serial-resonant inverter circuit, guarantee battery
The simple sinusoidal alternating current of side output target frequency and target amplitude；
S7, low temperature self-heating is carried out to battery pack using the simple sinusoidal alternating current of serial-resonant inverter circuit output；
S8, when battery pack temperature reaches target temperature, lockout switch pipe pulse forbids simple sinusoidal alternating current to export.
2. a kind of Li-ion batteries piles low temperature self-heating method as described in claim 1, it is characterised in that: in step S5, institute
State serial-resonant inverter circuit switching tube turned off in zero current with it is open-minded.
3. a kind of Li-ion batteries piles low temperature self-heating method as described in claim 1, it is characterised in that: the switching tube packet
Include IGBT1, IGBT2, IGBT3 and IGBT4.
4. a kind of Li-ion batteries piles low temperature self-heating method as claimed in claim 3, it is characterised in that: described in step S5
Main circuit includes: IGBT1, IGBT2, IGBT3, IGBT4, electric capacitor, inductance, equivalent resistance and contactor；The lithium ion
The anode of battery pack is connect with contactor, and contactor is connect with the collector of the collector of IGBT1 and IGBT2 respectively, the electricity
One end of sense is separately connected the emitter of IGBT2 and the collector of IGBT4, and one end connection of the other end and electric capacitor is described
The other end of electric capacitor is connect with the collector of the emitter of IGBT1 and IGBT3 respectively, one end difference of the equivalent resistance
It is connect with the emitter of the emitter of IGBT3 and IGBT4, the cathode connection of the other end and Li-ion batteries piles.
5. a kind of Li-ion batteries piles low temperature self-heating method as claimed in claim 4, it is characterised in that: the equivalent resistance
For the total of Li-ion batteries piles internal resistance, switching tube internal resistance, inductance internal resistance, electric capacitor internal resistance, contactor internal resistance and route internal resistance
With.
6. a kind of Li-ion batteries piles low temperature self-heating method as claimed in claim 4, it is characterised in that: the contactor is used
In the access and excision of control power supply.
7. a kind of Li-ion batteries piles low temperature self-heating method as described in claim 1, it is characterised in that: described in step S6
Control circuit includes: DSP microcontroller, signal deteching circuit, driving circuit and protection circuit.
8. a kind of Li-ion batteries piles low temperature self-heating method as described in claim 1, it is characterised in that: low in step S7
During warm self-heating, as the battery temperature increases, the internal resistance of cell is gradually reduced, and serial-resonant inverter circuit adaptively increases
The amplitude of big simple sinusoidal alternating current, the battery pack rate of heat addition are accelerated.
9. a kind of Li-ion batteries piles low temperature self-heating method as described in claim 1-8 any claim, feature exist
It include that lithium manganate power battery, cobalt acid lithium power battery, metatitanic acid lithium dynamical battery, LiFePO4 are dynamic in: the lithium ion battery
Power battery or ternary material power battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611071787.6A CN107039708B (en) | 2016-11-29 | 2016-11-29 | A kind of Li-ion batteries piles low temperature self-heating method |
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| CN201611071787.6A CN107039708B (en) | 2016-11-29 | 2016-11-29 | A kind of Li-ion batteries piles low temperature self-heating method |
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| CN107039708A CN107039708A (en) | 2017-08-11 |
| CN107039708B true CN107039708B (en) | 2019-08-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09259937A (en) * | 1996-03-22 | 1997-10-03 | Mitsubishi Chem Corp | Method and device for preheating secondary battery |
| JP2011138672A (en) * | 2009-12-28 | 2011-07-14 | Panasonic Corp | Battery system heating method |
| CN203722291U (en) * | 2014-01-09 | 2014-07-16 | 同济大学 | Boost type alternating current low temperature heating circuit for power battery module |
| CN105680114A (en) * | 2016-01-07 | 2016-06-15 | 北京北交新能科技有限公司 | Low-temperature rapid self-heating method for lithium-ion battery |
| CN106025443A (en) * | 2016-07-25 | 2016-10-12 | 北京理工大学 | Power system capable of performing heating on the basis of LC resonance and vehicle |
-
2016
- 2016-11-29 CN CN201611071787.6A patent/CN107039708B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09259937A (en) * | 1996-03-22 | 1997-10-03 | Mitsubishi Chem Corp | Method and device for preheating secondary battery |
| JP2011138672A (en) * | 2009-12-28 | 2011-07-14 | Panasonic Corp | Battery system heating method |
| CN203722291U (en) * | 2014-01-09 | 2014-07-16 | 同济大学 | Boost type alternating current low temperature heating circuit for power battery module |
| CN105680114A (en) * | 2016-01-07 | 2016-06-15 | 北京北交新能科技有限公司 | Low-temperature rapid self-heating method for lithium-ion battery |
| CN106025443A (en) * | 2016-07-25 | 2016-10-12 | 北京理工大学 | Power system capable of performing heating on the basis of LC resonance and vehicle |
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