CN110085947A - A kind of quick self-heating method of battery cell, system and device - Google Patents
A kind of quick self-heating method of battery cell, system and device Download PDFInfo
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- CN110085947A CN110085947A CN201910215443.5A CN201910215443A CN110085947A CN 110085947 A CN110085947 A CN 110085947A CN 201910215443 A CN201910215443 A CN 201910215443A CN 110085947 A CN110085947 A CN 110085947A
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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
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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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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- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a kind of quick self-heating method of battery cell, system and device, the method acquires the surface temperature of each battery cell using temperature sensor, the voltage of each battery cell is acquired using voltage sensor, controller discharges to each battery cell according to the surface temperature and voltage control variable frequency unsteady flow charge/discharge control circuit of each battery cell, the requirement reduced to battery computer heating control strategy is realized in the self discharge that the present invention only passes through battery cell, to be further ensured that the safety of battery.
Description
Technical field
The present invention relates to battery technical field of heating, more particularly to a kind of quick self-heating method of battery cell, system
And device.
Background technique
Lithium ion battery has many advantages, such as that voltage is high, capacity is big, small in size, light weight, and operating temperature range is wide, lithium ion
Battery pack has been widely used in the fields such as every field, including electric bicycle, electric tool and electric car.Lithium-ion electric
Pond is more sensitive to the temperature of use environment, when the temperature is low, battery can discharge energy, power and discharging efficiency compared with
It is low, and there is also some potential safety problemss for charging when low temperature, such as generate dendrite.Therefore, low temperature is largely effected on using problem
The application and popularization of lithium ion battery.
Currently, at low ambient temperatures in use, there are three kinds of major programmes.(1) without heating system, program use process
Middle battery power discharge efficiency is relatively low, and seriously affects power, service life and the safety of battery pack.(2) it is designed as using
The external heating of the forms such as heating wire auxiliary heating, since battery itself heat transfer property is poor, the program is there are low efficiency and is easy
Cause the defects of battery temperature is uneven.And the inhomogeneities of stack operating temperature can be to battery life, safety etc.
It affects.(3) in the case where resistor disc low temperature environment is added in inside battery, make inside battery that internal short-circuit occur to realize the short time
Interior battery temperature rises to zero degree or more, however this design scheme is there are two drawback, one manufacturing process in the fabrication process
Complex yield rate is lower, secondly design resistor disc inside battery increase battery break down in use it is general
Rate.Based on the above issues, the efficiency for how improving battery low-temperature heat reduces the consumption of energy and lithium in battery heating process
The damage that ion battery systems discharge under the conditions of low temperature high magnification to battery band guarantees that the safety of battery system becomes ability
The problem of domain urgent need to resolve.
Summary of the invention
The object of the present invention is to provide a kind of quick self-heating method of battery cell and devices, only pass through the self discharge of battery
Realizing reduces to the requirement of battery computer heating control, to be further ensured that the safety of battery.
To achieve the above object, the present invention provides a kind of quick self-heating methods of battery cell, which comprises
Step S1: controller acquires the surface temperature of each battery cell using temperature sensor；
Step S2: controller judges whether the surface temperature of each battery cell is less than temperature given threshold, obtains first and sentences
Disconnected result；If first judging result indicates that the surface temperature of each battery cell is less than temperature given threshold, step is executed
Rapid S3；If first judging result indicates that the surface temperature of each battery cell is greater than or equal to temperature given threshold, hold
Row step S4；
Step S3: controller chooses the corresponding discharge current of surface temperature and electric discharge frequency of pre-set each battery cell
Rate control frequency-changing and current transforming charge/discharge control circuit discharges to each battery cell, and executes step S4；
Step S4: controller acquires the voltage of each battery cell using voltage sensor；
Step S5: controller judges whether the voltage of each battery cell is less than default heating voltage grade, obtains second and sentences
Disconnected result；If second judging result indicates that the voltage of each battery cell is greater than or equal to default heating voltage grade,
It is discharged according to the corresponding discharge current control frequency-changing and current transforming charge/discharge control circuit of the temperature acquired for the first time each battery cell,
And execute step S6；If second judging result indicates that the voltage of each battery cell is less than default heating voltage grade,
Execute step S7；
Step S6: controller acquires the surface temperature of each battery cell using temperature sensor, and judges each battery cell
Surface temperature whether be greater than or equal to preset temperature threshold, obtain third judging result；If the third judging result table
Show that the surface temperature of each battery cell is greater than or equal to preset temperature threshold, thens follow the steps S11；If the third judgement knot
Fruit indicates that the surface temperature of each battery cell is less than preset temperature threshold, thens follow the steps S3；
Step S7: controller judges whether the voltage of each battery cell under-voltage or over-voltage, obtains the 4th judging result；If
4th judging result indicates under-voltage or the over-voltage of each battery cell, thens follow the steps S10；It is no to then follow the steps S8；
Step S8: it when controller judges whether the voltage of each battery cell is greater than or equal to battery specified lower limit value, obtains
5th judging result；If the 5th judging result indicates that the voltage of each battery cell is greater than or equal to the specified lower limit value of battery,
Controller chooses the corresponding discharge current of voltage and the discharge frequency control frequency-changing and current transforming electric discharge of pre-set each battery cell
Control circuit discharges to each battery cell, and return step S6；
Step S9: when controller judges the whether under-voltage voltage of each battery cell or over-voltage, the 6th judging result is obtained；Such as
When the 6th judging result of fruit indicates under-voltage or the over-voltage of each battery cell, S10 is thened follow the steps；It is no to then follow the steps S11；
Step S10: controller control frequency-changing and current transforming charge/discharge control circuit stops working；
Step S11: controller controls frequency-changing and current transforming charge/discharge control circuit and works normally.
Optionally, described under-voltage for less than battery factory voltage lower limit value；The over-voltage is to dispatch from the factory on voltage greater than battery
Limit value.
The present invention also provides a kind of quick self-heating system of battery cell, the system comprises:
First acquisition module, for acquiring the surface temperature of each battery cell using temperature sensor；
First judgment module obtains for judging whether the surface temperature of each battery cell is less than temperature given threshold
One judging result；If first judging result indicates that the surface temperature of each battery cell is less than temperature given threshold, hold
Row " chooses module "；If first judging result indicates that the surface temperature of each battery cell is greater than or equal to temperature and sets threshold
Value, then execute " the second acquisition module "；
Module is chosen, for choosing the corresponding discharge current of surface temperature and electric discharge frequency of pre-set each battery cell
Rate control frequency-changing and current transforming charge/discharge control circuit discharges to each battery cell, and executes " the second acquisition module "；
Second acquisition module, for acquiring the voltage of each battery cell using voltage sensor；
Second judgment module obtains for judging whether the voltage of each battery cell is less than default heating voltage grade
Two judging results；If second judging result indicates that the voltage of each battery cell is greater than or equal to default heating voltage etc.
Grade then carries out each battery cell according to the corresponding discharge current control frequency-changing and current transforming charge/discharge control circuit of the temperature acquired for the first time
Electric discharge, and execute " third judgment module "；If second judging result indicates that the voltage of each battery cell is less than default add
Thermal voltage grade then executes the 4th judgment module；
Third judgment module acquires the surface temperature of each battery cell using temperature sensor for controller, and judges
Whether the surface temperature of each battery cell is greater than or equal to preset temperature threshold, obtains third judging result；If the third
Judging result indicates that the surface temperature of each battery cell is greater than or equal to preset temperature threshold, then controller control frequency-changing and current transforming is put
Electric control circuit works normally；If the third judging result indicates that the surface temperature of each battery cell is less than preset temperature threshold
Value then executes " choosing module "；
4th judgment module, whether the voltage for judging each battery cell is under-voltage or over-voltage, obtains the 4th judging result；
If the 4th judging result indicates under-voltage or the over-voltage of each battery cell, controller controls frequency-changing and current transforming electric discharge control
Circuit processed stops working；Otherwise " the 5th judgment module " is executed；
5th judgment module, when for judging whether the voltage of each battery cell is greater than or equal to the specified lower limit value of battery,
Obtain the 5th judging result；If the 5th judging result indicates that the voltage of each battery cell is greater than or equal to the specified lower limit of battery
Value, then controller chooses the corresponding discharge current of voltage and discharge frequency control frequency-changing and current transforming of pre-set each battery cell
Charge/discharge control circuit discharges to each battery cell, and returns to " third judgment module "；
6th judgment module when whether the voltage for judging each battery cell is under-voltage or over-voltage, obtains the 6th judgement knot
Fruit；If the 6th judging result indicates under-voltage or the over-voltage of each battery cell, controller controls frequency-changing and current transforming electric discharge
Control circuit stops working；Otherwise controller control frequency-changing and current transforming charge/discharge control circuit works normally.
Optionally, described under-voltage for less than battery factory voltage lower limit value；The over-voltage is to dispatch from the factory on voltage greater than battery
Limit value.
The present invention also provides a kind of quick self-heating apparatus of battery cell, described device include: multiple battery management units,
Controller and frequency-changing and current transforming charge/discharge control circuit；Each battery management unit is sequentially connected in series composition battery management module,
Each battery management unit includes battery cell, temperature sensor and voltage sensor, the temperature sensor and the electricity
The connection of pond monomer, the both ends of the voltage sensor are connect with the both ends of the battery cell respectively, each battery management list
The temperature sensor and the voltage sensor in member are connect with the controller respectively, the frequency-changing and current transforming control of discharge
Circuit is connect with the controller, the battery management module both ends respectively；The controller application adds certainly in described above
Hot method carries out electric discharge heating to battery cell.
Optionally, the frequency-changing and current transforming charge/discharge control circuit includes:
First control switch, the second control switch, third control switch, the 4th control switch, first diode, the two or two
Pole pipe, the first inductance, the second inductance and capacitor, first control switch one end connection Li-ion batteries piles anode are another
End is separately connected first diode cathode and the first inductance, and second control switch one end connection Li-ion batteries piles are negative
Pole, the other end are separately connected the first inductance, capacitor and the 4th control switch, and the first diode anode is separately connected capacitor
With third control switch, the second described inductance one end is separately connected third control switch and the second diode anode, the other end
It is separately connected the 4th control switch and Li-ion batteries piles cathode, second diode cathode and Li-ion batteries piles anode
Connection.
Optionally, the surface of the battery cell is arranged in the temperature sensor.
Optionally, the controller is used to be stored in advance the corresponding discharge current of voltage and electric discharge frequency of each battery cell
Rate stores the corresponding discharge current of surface temperature and discharge frequency of each battery cell.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
1), the present invention is to carry out battery itself using Frequency time-dependent current pulsed discharge control circuit to heat, due to
The presence of lithium ion battery internal resistance and the mechanism of electrochemical reaction can generate heat during battery cycle charge-discharge, thus
It is heated from inside to battery, makes battery temperature more evenly；And traditional approach is heated by external device (ED), is transmitted by battery shell wall
Heat, in contrast, heating time of the invention is short, and energy loss is small, more efficient.
2), however, as the internal temperature of the rising battery of battery temperature is higher and higher, according to the variation of external temperature,
The size of appropriate regulating cell discharge current and discharge frequency, can be further ensured that battery is caused because internal temperature is excessively high to electricity
Damage inside pond.
3), during self-heating of the present invention, only being realized by the self discharge of battery cell is reduced to battery computer heating control plan
Requirement slightly, to be further ensured that the safety of battery.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the quick self-heating method flow chart of battery cell of the embodiment of the present invention；
Fig. 2 is the electric current and time analogous diagram of battery cell of the embodiment of the present invention；
Fig. 3 is the quick self-heating system construction drawing of battery cell of the embodiment of the present invention；
Fig. 4 is the quick self-heating apparatus structure chart of battery cell of the embodiment of the present invention；
Fig. 5 is frequency-changing and current transforming of embodiment of the present invention charge/discharge control circuit structure chart.
Wherein, 1, battery management module, 2, controller, 3, frequency-changing and current transforming charge/discharge control circuit, the 31, first control switch,
32, the second control switch, 33, third control switch, the 34, the 4th control switch, 35, first diode, the 36, second diode,
37, the first inductance, the 38, second inductance, 39, capacitor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of quick self-heating method of battery cell, system and devices, only pass through battery
Self discharge realization is reduced to battery computer heating control requirement, to be further ensured that the safety of battery cell.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the quick self-heating method flow chart of battery cell of the embodiment of the present invention, as shown in Figure 1, the present invention provides one
The kind quick self-heating method of battery cell, which comprises
Step S1: controller acquires the surface temperature of each battery cell using temperature sensor；
Step S2: controller judges whether the surface temperature of each battery cell is less than temperature given threshold, obtains first and sentences
Disconnected result；If first judging result indicates that the surface temperature of each battery cell is less than temperature given threshold, step is executed
Rapid S3；If first judging result indicates that the surface temperature of each battery cell is greater than or equal to temperature given threshold, hold
Row step S4；
Step S3: controller chooses the corresponding discharge current of surface temperature and electric discharge frequency of pre-set each battery cell
Rate control frequency-changing and current transforming charge/discharge control circuit discharges to each battery cell, and executes step S4；
Step S4: controller acquires the voltage of each battery cell using voltage sensor；
Step S5: controller judges whether the voltage of each battery cell is less than default heating voltage grade, obtains second and sentences
Disconnected result；If second judging result indicates that the voltage of each battery cell is greater than or equal to default heating voltage grade,
It is discharged according to the corresponding discharge current control frequency-changing and current transforming charge/discharge control circuit of the temperature acquired for the first time each battery cell,
And execute step S6；If second judging result indicates that the voltage of each battery cell is less than default heating voltage grade,
Execute step S7；
Step S6: controller acquires the surface temperature of each battery cell using temperature sensor, and judges each battery cell
Surface temperature whether be greater than or equal to preset temperature threshold, obtain third judging result；If the third judging result table
Show that the surface temperature of each battery cell is greater than or equal to preset temperature threshold, thens follow the steps S11；If the third judgement knot
Fruit indicates that the surface temperature of each battery cell is less than preset temperature threshold, thens follow the steps S3；
Step S7: controller judges whether the voltage of each battery cell under-voltage or over-voltage, obtains the 4th judging result；If
4th judging result indicates under-voltage or the over-voltage of each battery cell, thens follow the steps S10；It is no to then follow the steps S8；
Step S8: it when controller judges whether the voltage of each battery cell is greater than or equal to battery specified lower limit value, obtains
5th judging result；If the 5th judging result indicates that the voltage of each battery cell is greater than or equal to the specified lower limit value of battery,
Controller chooses the corresponding discharge current of voltage and the discharge frequency control frequency-changing and current transforming electric discharge of pre-set each battery cell
Control circuit discharges to each battery cell, and return step S6；
Step S9: when controller judges the whether under-voltage voltage of each battery cell or over-voltage, the 6th judging result is obtained；Such as
When the 6th judging result of fruit indicates under-voltage or the over-voltage of each battery cell, S10 is thened follow the steps；It is no to then follow the steps S11；
Step S10: controller control frequency-changing and current transforming charge/discharge control circuit stops working；
Step S11: controller controls frequency-changing and current transforming charge/discharge control circuit and works normally.
As an implementation, of the present invention under-voltage for less than battery factory voltage lower limit value；The over-voltage is big
In battery factory upper voltage limit.
The present invention is emulated using the above method, and simulation result is as shown in Figure 2.
Fig. 3 is the quick self-heating system construction drawing of battery cell of the embodiment of the present invention, as shown in figure 3, the present invention also provides
A kind of quick self-heating system of battery cell, the system comprises:
First acquisition module 1, for acquiring the surface temperature of each battery cell using temperature sensor；
First judgment module 2 obtains for judging whether the surface temperature of each battery cell is less than temperature given threshold
One judging result；If first judging result indicates that the surface temperature of each battery cell is less than temperature given threshold, hold
Row " chooses module "；If first judging result indicates that the surface temperature of each battery cell is greater than or equal to temperature and sets threshold
Value, then execute " the second acquisition module "；
Module 3 is chosen, for choosing the corresponding discharge current of surface temperature and the electric discharge of pre-set each battery cell
Frequency control frequency-changing and current transforming charge/discharge control circuit discharges to each battery cell, and executes " the second acquisition module "；
Second acquisition module 4, for acquiring the voltage of each battery cell using voltage sensor；
Second judgment module 5 obtains for judging whether the voltage of each battery cell is less than default heating voltage grade
Two judging results；If second judging result indicates that the voltage of each battery cell is greater than or equal to default heating voltage etc.
Grade then carries out each battery cell according to the corresponding discharge current control frequency-changing and current transforming charge/discharge control circuit of the temperature acquired for the first time
Electric discharge, and execute " third judgment module "；If second judging result indicates that the voltage of each battery cell is less than default add
Thermal voltage grade then executes the 4th judgment module；
Third judgment module 6 acquires the surface temperature of each battery cell using temperature sensor for controller, and judges
Whether the surface temperature of each battery cell is greater than or equal to preset temperature threshold, obtains third judging result；If the third
Judging result indicates that the surface temperature of each battery cell is greater than or equal to preset temperature threshold, then controller control frequency-changing and current transforming is put
Electric control circuit works normally；If the third judging result indicates that the surface temperature of each battery cell is less than preset temperature threshold
Value then executes " choosing module "；
4th judgment module 7, whether the voltage for judging each battery cell is under-voltage or over-voltage, obtains the 4th judgement knot
Fruit；If the 4th judging result indicates under-voltage or the over-voltage of each battery cell, controller control frequency-changing and current transforming is put
Electric control circuit stops working；Otherwise " the 5th judgment module " is executed；
5th judgment module 8, when for judging whether the voltage of each battery cell is greater than or equal to the specified lower limit value of battery,
Obtain the 5th judging result；If the 5th judging result indicates that the voltage of each battery cell is greater than or equal to the specified lower limit of battery
Value, then controller chooses the corresponding discharge current of voltage and discharge frequency control frequency-changing and current transforming of pre-set each battery cell
Charge/discharge control circuit discharges to each battery cell, and returns to " third judgment module "；
6th judgment module 9 when whether the voltage for judging each battery cell is under-voltage or over-voltage, obtains the 6th judgement knot
Fruit；If the 6th judging result indicates under-voltage or the over-voltage of each battery cell, controller controls frequency-changing and current transforming electric discharge
Control circuit stops working；Otherwise controller control frequency-changing and current transforming charge/discharge control circuit works normally.
As an implementation, of the present invention under-voltage for less than battery factory voltage lower limit value；The over-voltage is big
In battery factory upper voltage limit.
Fig. 4 is the quick self-heating apparatus structure chart of battery cell of the embodiment of the present invention, as shown in figure 4, the present invention also provides
A kind of quick self-heating apparatus of battery cell, described device include: that multiple battery management units, controller 2 and frequency-changing and current transforming are put
Electric control circuit 3；Each battery management unit, which is sequentially connected in series, constitutes battery management module 1, each battery management list
Member includes battery cell, temperature sensor and voltage sensor, and the temperature sensor is connect with the battery cell, the electricity
The both ends of pressure sensor are connect with the both ends of the battery cell respectively, the temperature sensing in each battery management unit
Device and the voltage sensor are connect with the controller 2 respectively, the frequency-changing and current transforming charge/discharge control circuit 3 respectively with the control
Device 2 processed, the connection of 1 both ends of the battery management module；The controller 2 is applied to self-heating method described above to battery list
Body carries out electric discharge heating.
Fig. 5 is frequency-changing and current transforming of embodiment of the present invention charge/discharge control circuit structure chart, as shown in figure 5, frequency conversion of the present invention
Unsteady flow charge/discharge control circuit includes:
First control switch 31, the second control switch 32, third control switch 33, the 4th control switch 34, the one or two pole
Pipe 35, the second diode 36, the first inductance 37, the second inductance 38 and capacitor 39,31 one end of the first control switch connection
Li-ion batteries piles anode, the other end are separately connected 35 cathode of first diode and the first inductance 37, and second control is opened
32 one end connection Li-ion batteries piles cathode is closed, the other end is separately connected the first inductance 37, capacitor 39 and the 4th control switch 34,
35 anode of first diode is separately connected capacitor 39 and third control switch 33,38 one end of the second inductance difference
Connection third control switch 33 and 36 anode of the second diode, the other end are separately connected the 4th control switch 34 and lithium ion battery
Group cathode, 36 cathode of the second diode are connect with Li-ion batteries piles anode.
As an implementation, the surface of the battery cell is arranged in temperature sensor of the present invention.
As an implementation, voltage of the controller 2 of the present invention for each battery cell to be stored in advance is corresponding
Discharge current and discharge frequency store the corresponding discharge current of surface temperature and discharge frequency of each battery cell.
The invention has the following advantages that
1) present invention is to control progress battery itself using Frequency time-dependent current pulsed discharge to heat, due to lithium ion
The presence of the internal resistance of cell and the mechanism of electrochemical reaction can generate heat during battery cycle charge-discharge, thus from inside
It is heated to battery, makes battery temperature more evenly；And traditional approach is heated by external device (ED), and heat is transmitted by battery shell wall,
In contrast, heating time of the invention is short, and energy loss is small, more efficient；
2) appropriate to adjust according to the variation of external temperature as the internal temperature of the rising battery of battery temperature is higher and higher
The size of batteries discharge current and discharge frequency can be further ensured that battery is caused because internal temperature is excessively high to inside battery
Damage；
3) it during self-heating of the present invention, is only reduced by the self discharge realization of battery to battery computer heating control strategy
It is required that be further ensured that the safety of battery.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of quick self-heating method of battery cell, which is characterized in that the described method includes:
Step S1: controller acquires the surface temperature of each battery cell using temperature sensor；
Step S2: controller judges whether the surface temperature of each battery cell is less than temperature given threshold, obtains the first judgement knot
Fruit；If first judging result indicates that the surface temperature of each battery cell is less than temperature given threshold, S3 is thened follow the steps；
If first judging result indicates that the surface temperature of each battery cell is greater than or equal to temperature given threshold, then follow the steps
S4；
Step S3: controller chooses the corresponding discharge current of surface temperature and the discharge frequency control of pre-set each battery cell
Frequency-changing and current transforming charge/discharge control circuit processed discharges to each battery cell, and executes step S4；
Step S4: controller acquires the voltage of each battery cell using voltage sensor；
Step S5: controller judges whether the voltage of each battery cell is less than default heating voltage grade, obtains the second judgement knot
Fruit；If second judging result indicates that the voltage of each battery cell is greater than or equal to default heating voltage grade, basis
The corresponding discharge current control frequency-changing and current transforming charge/discharge control circuit of the temperature acquired for the first time discharges to each battery cell, and holds
Row step S6；If second judging result indicates that the voltage of each battery cell is less than default heating voltage grade, execute
Step S7；
Step S6: controller acquires the surface temperature of each battery cell using temperature sensor, and judges the table of each battery cell
Whether face temperature is greater than or equal to preset temperature threshold, obtains third judging result；If the third judging result indicates each
The surface temperature of battery cell is greater than or equal to preset temperature threshold, thens follow the steps S11；If the third judging result table
Show that the surface temperature of each battery cell is less than preset temperature threshold, thens follow the steps S3；
Step S7: controller judges whether the voltage of each battery cell under-voltage or over-voltage, obtains the 4th judging result；If described
4th judging result indicates under-voltage or the over-voltage of each battery cell, thens follow the steps S10；It is no to then follow the steps S8；
Step S8: when controller judges whether the voltage of each battery cell is greater than or equal to battery specified lower limit value, the 5th is obtained
Judging result；If the 5th judging result indicates that the voltage of each battery cell is greater than or equal to the specified lower limit value of battery, control
Device chooses the corresponding discharge current of voltage and discharge frequency control frequency-changing and current transforming control of discharge of pre-set each battery cell
Circuit discharges to each battery cell, and return step S6；
Step S9: when controller judges the whether under-voltage voltage of each battery cell or over-voltage, the 6th judging result is obtained；If the
When six judging results indicate under-voltage or the over-voltage of each battery cell, S10 is thened follow the steps；It is no to then follow the steps S11；
Step S10: controller control frequency-changing and current transforming charge/discharge control circuit stops working；
Step S11: controller controls frequency-changing and current transforming charge/discharge control circuit and works normally.
2. the quick self-heating method of battery cell according to claim 1, which is characterized in that described under-voltage for less than battery
Dispatch from the factory voltage lower limit value；The over-voltage is upper voltage limit of dispatching from the factory greater than battery.
3. a kind of quick self-heating system of battery cell, which is characterized in that the system comprises:
First acquisition module, for acquiring the surface temperature of each battery cell using temperature sensor；
First judgment module obtains first and sentences for judging whether the surface temperature of each battery cell is less than temperature given threshold
Disconnected result；If first judging result indicates that the surface temperature of each battery cell is less than temperature given threshold, " choosing is executed
Modulus block "；If first judging result indicates that the surface temperature of each battery cell is greater than or equal to temperature given threshold,
It executes " the second acquisition module "；
Module is chosen, for choosing the corresponding discharge current of surface temperature and the discharge frequency control of pre-set each battery cell
Frequency-changing and current transforming charge/discharge control circuit processed discharges to each battery cell, and executes " the second acquisition module "；
Second acquisition module, for acquiring the voltage of each battery cell using voltage sensor；
Second judgment module obtains second and sentences for judging whether the voltage of each battery cell is less than default heating voltage grade
Disconnected result；If second judging result indicates that the voltage of each battery cell is greater than or equal to default heating voltage grade,
It is discharged according to the corresponding discharge current control frequency-changing and current transforming charge/discharge control circuit of the temperature acquired for the first time each battery cell,
And execute " third judgment module "；If second judging result indicates that the voltage of each battery cell is less than default heating voltage
Grade then executes the 4th judgment module；
Third judgment module acquires the surface temperature of each battery cell using temperature sensor for controller, and judges each electricity
Whether the surface temperature of pond monomer is greater than or equal to preset temperature threshold, obtains third judging result；If the third judgement
As a result indicate that the surface temperature of each battery cell is greater than or equal to preset temperature threshold, then the electric discharge control of controller control frequency-changing and current transforming
Circuit processed works normally；If the third judging result indicates that the surface temperature of each battery cell is less than preset temperature threshold,
Then execute " choosing module "；
4th judgment module, whether the voltage for judging each battery cell is under-voltage or over-voltage, obtains the 4th judging result；If
4th judging result indicates under-voltage or the over-voltage of each battery cell, then controller control frequency-changing and current transforming control of discharge electricity
Road stops working；Otherwise " the 5th judgment module " is executed；
5th judgment module when for judging whether the voltage of each battery cell is greater than or equal to the specified lower limit value of battery, obtains
5th judging result；If the 5th judging result indicates that the voltage of each battery cell is greater than or equal to the specified lower limit value of battery,
Controller chooses the corresponding discharge current of voltage and the discharge frequency control frequency-changing and current transforming electric discharge of pre-set each battery cell
Control circuit discharges to each battery cell, and returns to " third judgment module "；
6th judgment module when whether the voltage for judging each battery cell is under-voltage or over-voltage, obtains the 6th judging result；Such as
When the 6th judging result of fruit indicates under-voltage or the over-voltage of each battery cell, then controller control frequency-changing and current transforming control of discharge is electric
Road stops working；Otherwise controller control frequency-changing and current transforming charge/discharge control circuit works normally.
4. the quick self-heating system of battery cell according to claim 3, which is characterized in that described under-voltage for less than battery
Dispatch from the factory voltage lower limit value；The over-voltage is upper voltage limit of dispatching from the factory greater than battery.
5. a kind of quick self-heating apparatus of battery cell, which is characterized in that described device includes: multiple battery management units, control
Device and frequency-changing and current transforming charge/discharge control circuit processed；Each battery management unit is sequentially connected in series composition battery management module, respectively
The battery management unit includes battery cell, temperature sensor and voltage sensor, the temperature sensor and the battery
Monomer connection, the both ends of the voltage sensor are connect with the both ends of the battery cell respectively, each battery management unit
In the temperature sensor and the voltage sensor connect respectively with the controller, frequency-changing and current transforming control of discharge electricity
Road is connect with the controller, the battery management module both ends respectively；The controller application is in -2 according to claim 1
Self-heating method described in one carries out electric discharge heating to battery cell.
6. the quick self-heating apparatus of battery cell according to claim 5, which is characterized in that the frequency-changing and current transforming electric discharge control
Circuit processed includes:
First control switch, the second control switch, third control switch, the 4th control switch, first diode, the two or two pole
Pipe, the first inductance, the second inductance and capacitor, first control switch one end connection Li-ion batteries piles anode, the other end
It is separately connected first diode cathode and the first inductance, the second described control switch one end connects Li-ion batteries piles cathode,
The other end is separately connected the first inductance, capacitor and the 4th control switch, the first diode anode be separately connected capacitor and
Third control switch, the second described inductance one end are separately connected third control switch and the second diode anode, the other end point
Not Lian Jie the 4th control switch and Li-ion batteries piles cathode, second diode cathode and Li-ion batteries piles anode connect
It connects.
7. the quick self-heating apparatus of battery cell according to claim 5, which is characterized in that the temperature sensor setting
On the surface of the battery cell.
8. the quick self-heating apparatus of battery cell according to claim 5, which is characterized in that the controller is for preparatory
The corresponding discharge current of voltage and discharge frequency for storing each battery cell, the surface temperature for storing each battery cell corresponding are put
Electric current and discharge frequency.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599889A (en) * | 2020-12-14 | 2021-04-02 | 天津市捷威动力工业有限公司 | Self-heating control method for lithium ion battery |
| CN112706656A (en) * | 2020-06-30 | 2021-04-27 | 比亚迪股份有限公司 | Low-temperature heating method and system for power battery of electric automobile, automobile and storage medium |
| CN113829964A (en) * | 2020-06-24 | 2021-12-24 | 比亚迪股份有限公司 | Self-heating method and system for power battery pack, automobile and storage medium |
| CN114454745A (en) * | 2022-03-01 | 2022-05-10 | 雅迪科技集团有限公司 | Low-temperature charging system and method for lithium battery and electric bicycle |
| CN114883693A (en) * | 2022-04-22 | 2022-08-09 | 华为数字能源技术有限公司 | Battery heating method, battery system and energy storage system |
| EP4044320A1 (en) * | 2019-11-08 | 2022-08-17 | Huawei Digital Power Technologies Co., Ltd. | Battery heating system, electric vehicle and vehicle-mounted system |
| WO2023221055A1 (en) * | 2022-05-19 | 2023-11-23 | 宁德时代新能源科技股份有限公司 | Battery discharging method and apparatus |
| CN117317456A (en) * | 2023-11-27 | 2023-12-29 | 江苏欧力特能源科技有限公司 | Low-temperature cold starting system of household energy storage lithium battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011015974A1 (en) * | 2009-08-02 | 2011-02-10 | Steve Carkner | Battery self heating system |
| CN104282965A (en) * | 2013-10-11 | 2015-01-14 | 同济大学 | Self-heating device and method of lithium ion battery |
| CN106532187A (en) * | 2016-11-08 | 2017-03-22 | 哈尔滨理工大学 | Battery heating method based on battery health status |
| CN206878144U (en) * | 2017-04-01 | 2018-01-12 | 上海汽车集团股份有限公司 | Electrokinetic cell exchanges discharge and recharge low-temperature heating system |
| CN108777339A (en) * | 2018-04-10 | 2018-11-09 | 北京理工大学 | A kind of lithium ion battery pulsed discharge self-heating method and device |
-
2019
- 2019-03-21 CN CN201910215443.5A patent/CN110085947B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011015974A1 (en) * | 2009-08-02 | 2011-02-10 | Steve Carkner | Battery self heating system |
| CN104282965A (en) * | 2013-10-11 | 2015-01-14 | 同济大学 | Self-heating device and method of lithium ion battery |
| CN106532187A (en) * | 2016-11-08 | 2017-03-22 | 哈尔滨理工大学 | Battery heating method based on battery health status |
| CN206878144U (en) * | 2017-04-01 | 2018-01-12 | 上海汽车集团股份有限公司 | Electrokinetic cell exchanges discharge and recharge low-temperature heating system |
| CN108777339A (en) * | 2018-04-10 | 2018-11-09 | 北京理工大学 | A kind of lithium ion battery pulsed discharge self-heating method and device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4044320A1 (en) * | 2019-11-08 | 2022-08-17 | Huawei Digital Power Technologies Co., Ltd. | Battery heating system, electric vehicle and vehicle-mounted system |
| EP4044320A4 (en) * | 2019-11-08 | 2023-02-15 | Huawei Digital Power Technologies Co., Ltd. | Battery heating system, electric vehicle and vehicle-mounted system |
| CN113829964A (en) * | 2020-06-24 | 2021-12-24 | 比亚迪股份有限公司 | Self-heating method and system for power battery pack, automobile and storage medium |
| CN113829964B (en) * | 2020-06-24 | 2023-11-14 | 比亚迪股份有限公司 | Self-heating method and system of power battery pack, automobile and storage medium |
| CN112706656B (en) * | 2020-06-30 | 2021-12-07 | 比亚迪股份有限公司 | Low-temperature heating method and system for power battery of electric automobile, automobile and storage medium |
| CN112706656A (en) * | 2020-06-30 | 2021-04-27 | 比亚迪股份有限公司 | Low-temperature heating method and system for power battery of electric automobile, automobile and storage medium |
| CN112599889A (en) * | 2020-12-14 | 2021-04-02 | 天津市捷威动力工业有限公司 | Self-heating control method for lithium ion battery |
| CN114454745A (en) * | 2022-03-01 | 2022-05-10 | 雅迪科技集团有限公司 | Low-temperature charging system and method for lithium battery and electric bicycle |
| CN114454745B (en) * | 2022-03-01 | 2024-03-08 | 雅迪科技集团有限公司 | Lithium battery low-temperature charging system and method and electric two-wheeled vehicle |
| CN114883693A (en) * | 2022-04-22 | 2022-08-09 | 华为数字能源技术有限公司 | Battery heating method, battery system and energy storage system |
| WO2023221055A1 (en) * | 2022-05-19 | 2023-11-23 | 宁德时代新能源科技股份有限公司 | Battery discharging method and apparatus |
| CN117317456A (en) * | 2023-11-27 | 2023-12-29 | 江苏欧力特能源科技有限公司 | Low-temperature cold starting system of household energy storage lithium battery |
| CN117317456B (en) * | 2023-11-27 | 2024-02-06 | 江苏欧力特能源科技有限公司 | Low-temperature cold starting system of household energy storage lithium battery |
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