CN110336099A - A kind of battery self-heating method and device - Google Patents
A kind of battery self-heating method and device Download PDFInfo
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- CN110336099A CN110336099A CN201910661436.8A CN201910661436A CN110336099A CN 110336099 A CN110336099 A CN 110336099A CN 201910661436 A CN201910661436 A CN 201910661436A CN 110336099 A CN110336099 A CN 110336099A
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- battery
- charge pump
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- heating
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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
- H01M10/63—Control systems
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
This application discloses a kind of battery self-heating method and devices, device includes battery, charge pump and controller, pass through the control to charge pump, the charge pump can be made to carry out charge or discharge operation, for the controller when the work state information instruction battery of battery needs self-heating, controller control charge pump is alternately charged and discharged process, so that the battery corresponding alternately electric discharge and charging process, heat is generated, realizes self-heating.Battery self-heating method and device disclosed by the embodiments of the present invention, it can be when battery temperature be low, it automatically controls charge pump and carries out alternate charge and discharge, to make battery itself is also corresponding to carry out electric discharge and charging process, since battery itself has internal resistance, the process of charge and discharge can make battery heat production, play the effect to conducting self-heating, the battery self-heating method does not need that self-heating can be carried out whenever and wherever possible as needed containing source device by outside, greatly convenient for users to use.
Description
Technical field
The present invention relates to battery management techniques, and more specifically, it relates to a kind of battery self-heating method and devices.
Background technique
Battery provides device as the energy of new-energy automobile, and reliable and stable work is for promoting new-energy automobile skill
The development of art is of great significance.Under normal circumstances, the performance of battery will appear significant decline in low temperature environment.In order to protect
Demonstrate,prove the normal use of battery at low temperature, it is necessary to heat to battery, reach the temperature range of suitable services.
Currently, the mode that a kind of pair of battery is heated is exactly to load alternating current to battery, make battery in alternating current
Under the action of heat production, play the effect of self-heating.But this method for carrying out self-heating to battery using alternating current, needs to borrow
It helps the external source device that contains to generate alternating current, is difficult to carry out in the case where no external power supply.
Summary of the invention
In view of this, the present invention provides a kind of battery self-heating method and device, when needed easily to battery
Carry out self-heating.
To achieve the above object, the invention provides the following technical scheme:
A kind of battery self-heating apparatus, including battery, charge pump and controller；
Wherein, the anode of the charge pump is connect with the anode of the battery, the cathode of the charge pump and the battery
Cathode connection；
The controller is connect with the battery and the charge pump respectively, for being believed according to the working condition of the battery
Breath, controls the working condition of the charge pump, and the working condition of the charge pump includes charging, electric discharge and open circuit.
Optionally, the charge pump be switched capacitor voltage changer, the charge pump include at least two capacitors and
At least three switches, at least three switch can control the connection of at least two capacitor under different switch states
State.
Optionally, at least three switch can control the string of at least two capacitor under different switch states
Connection, in parallel and open circuit.
Optionally, at least two capacitor includes first capacitor and the second capacitor, and at least three switch includes the
One switch, second switch and third switch；
Wherein, the third switch, institute are provided on the route that the first capacitor is connect with the cathode of the charge pump
It states and is provided with the first switch, the cathode of the first capacitor on the route that the second capacitor is connect with the anode of the charge pump
The second switch is provided on route between the anode of second capacitor.
Optionally, in the first operative state, the first switch and the third close the switch the charge pump, described
Second switch disconnects；In a second operative state, the first switch and third switch disconnect the charge pump, and described the
Two close the switch；In the operational mode, first working condition and second working condition alternately switch the charge pump
It carries out.
Optionally, further includes: temperature sensor, the temperature sensor connect with the controller and the battery respectively
It connects.
A kind of battery self-heating method is applied to any one of the above battery self-heating apparatus, comprising:
The work state information of battery is obtained, the work state information includes temperature；
When the temperature is less than preset temperature value, control charge pump is alternately charged and discharged process, so that described
Battery corresponding alternately electric discharge and charging process, generate heat；
When the temperature of the battery reaches the preset temperature value, controls the charge pump and stop working.
Optionally, the control charge pump is alternately charged and discharged process, comprising:
The charge pump, which is controlled, according to predetermined control strategy and preset control frequency is alternately charged and discharged process.
Optionally, the determination basis of the predetermined control strategy includes the circuit structure of the charge pump, the default control
The determination basis of frequency processed includes the ac impedance characteristic of the battery and the life parameter of switching device.
Optionally, further includes:
The operating voltage and operating current of battery described in real-time monitoring；
If the operating voltage is more than predetermined voltage threshold or the operating current is more than predetermined current threshold, institute is controlled
Charge pump is stated to stop working.
It can be seen via above technical scheme that compared with prior art, the embodiment of the invention discloses a kind of batteries to add certainly
Hot method and device, device include that battery, charge pump and controller by the control to the charge pump can make the electricity
Lotus pump carries out charge or discharge operation, and the controller is when the work state information instruction battery of battery needs self-heating, control
Device control charge pump processed is alternately charged and discharged process, alternately discharges and charged so that the battery is corresponding
Journey generates heat, realizes self-heating.Battery self-heating method and device disclosed by the embodiments of the present invention, can be in battery temperature
When low, automatically control charge pump and carry out alternate charge and discharge, thus make battery itself is also corresponding to carry out electric discharge and charging process,
Since battery itself has internal resistance, the process of charge and discharge can make battery heat production, play the effect to conducting self-heating, which adds certainly
Hot method does not need to carry out self-heating whenever and wherever possible as needed containing source device by outside, have great convenience for the user
It uses.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of battery self-heating apparatus disclosed by the embodiments of the present invention；
Fig. 2 is a kind of structural schematic diagram of charge pump disclosed by the embodiments of the present invention；
Fig. 3 is the working principle diagram of battery self-heating apparatus disclosed by the embodiments of the present invention；
Fig. 4 is the schematic diagram of charge pump both end voltage variation during battery self-heating disclosed by the embodiments of the present invention；
Fig. 5 be battery self-heating disclosed by the embodiments of the present invention during battery curent change schematic diagram；
Fig. 6 is a kind of flow chart of battery self-heating method disclosed by the embodiments of the present invention；
Fig. 7 is the flow chart of another battery self-heating method disclosed by the embodiments of the present invention.
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.
Fig. 1 is the structural schematic diagram of battery self-heating apparatus disclosed by the embodiments of the present invention, shown in Figure 1, and battery is certainly
Heating device may include battery 10, charge pump 20 and controller 30.
Wherein, the anode of the charge pump 20 is connect with the anode of the battery 10, the cathode of the charge pump 20 and institute
State the cathode connection of battery 10.
The controller 30 is connect with the battery 10 and the charge pump 20 respectively, for acquiring the work of the battery 10
Make status information, and control the working condition of the charge pump 20 according to the work state information, the charge pump 20 works
State includes charging, electric discharge and open circuit.
Determine that the temperature of battery 10 is low according to the work state information of battery 10 in controller, when needing to carry out self-heating,
Controller 30 issues control information, control charge pump 20 alternately charging operations to charge pump 20 according to preset algorithm logic
And discharge operation, since the anode of battery 10 is connect with the anode of charge pump 20, the cathode of battery 10 and the cathode of charge pump 20
Connection, in this way, battery 10 itself also corresponding can be discharged and be charged during charge pump 20 is charged and discharged, by
There is internal resistance in battery itself, the process of charge and discharge can make battery heat production, play the effect to conducting self-heating.The present embodiment discloses
Battery self-heating apparatus do not need battery can be made containing source device to carry out self-heating, pole whenever and wherever possible as needed by outside
Big is convenient for users to use.
In above-described embodiment, the charge pump 30 can be switched capacitor voltage changer, and charge pump 20 can be by more
The components such as a capacitor and multiple switch are formed by connecting, using capacitor as energy storage original part, by controlling the disconnection of each switch and closing
It closes, thus it is possible to vary the connection type between each capacitor, to realize the transformation of 20 both ends output voltage of charge pump.
Specifically, the charge pump may include at least two capacitors and at least three switches, at least three switch
It can control the connection status of at least two capacitor under different switch states.Specifically, at least three switch
It can control series, parallel and the open circuit of at least two capacitor under different switch states.Wherein, the switch can be with
But it is not limited to metal-oxide-semiconductor (metal oxide semiconductor, Metal Oxide Semiconductor Field Effect Transistor) or IGBT
(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), specifically can be according to the power of circuit
Size come determine use which kind of switch.
Fig. 2 is a kind of structural schematic diagram of charge pump disclosed by the embodiments of the present invention, shown in Figure 2, specific at one
Realization in, at least two capacitor includes first capacitor C1 and the second capacitor C2, and at least three switch includes first
Switch S1, second switch S2 and third switch S3.
Wherein, the third switch is provided on the route that the first capacitor C1 is connect with the cathode of the charge pump 20
It is provided with the first switch S1 on the route that the anode of S3, the second capacitor C2 and the charge pump 20 is connect, described the
Be provided on route between the cathode of one capacitor C1 and the anode of the second capacitor C2 the second switch S2 (in Fig. 2 with
Second switch exemplifies between the cathode of first capacitor C1 and the anode of the second capacitor C2).In practical applications, it first opens
The position for closing S1 and third switch S3 can also have different realizations, the route connecting such as first capacitor C1 with the anode of charge pump 20
Upper setting third switch S3 first switch S1 is arranged on the route that the second capacitor C2 is connect with the cathode of charge pump 20, at this time
Second switch S2 is set between the anode of first capacitor C1 and the connection line of the cathode of the second capacitor C2.
In the first operative state, the first switch S1 and third switch S3 closure are described for the charge pump 20
Second switch S2 is disconnected；In a second operative state, the first switch S1 and the third switch S3 are disconnected for the charge pump 20
It opens, the second switch S2 closure；In the operational mode, first working condition and described second works the charge pump 20
Alternately switching carries out state.
As can be seen that as switch S1, when S3 closure and S2 are disconnected, capacitor C1 and C2 parallel connection, charge pump 20 is in low pressure shape
State (corresponding above-mentioned first working condition)；As switch S1, S3 is disconnected and S2 when being closed, capacitor C1 and C2 series connection, at charge pump 20
In high pressure conditions (corresponding to above-mentioned second working condition).
When controller 30 controls the work of charge pump 20 in low-pressure state, battery 10 discharges, and charge pump 20 charges；Work as control
Device 30 controls the work of charge pump 20 in high pressure conditions, and charge pump 20 is discharged, and battery 10 charges.Controller 30 controls charge pump 20
It works alternatively in low pressure and high pressure conditions, battery 10 will be made to work alternatively in discharge condition and charged state, and then can be real
The self-heating of existing battery.
In above-described embodiment, battery self-heating apparatus may also include that temperature sensor, temperature sensor respectively with the control
Device processed is connected with the battery, and for acquiring the real time temperature information of battery, controller 30 is used to be believed according to collected temperature
Breath carries out the control of switching device.
The concrete operating principle process to battery self-heating apparatus is described in detail below.
S1: controller receives voltage, the electric current, temperature acquisition information of battery, and judges to open when temperature is lower than preset value
Self heating function is opened, step S2 is executed.
S2: according to preset control strategy, (control frequency one side consideration battery exchanges resistance to controller with control frequency
Anti- characteristic, the frequency range for selecting battery impedance value bigger；Additionally need the service life feelings for considering that switching component is frequently opened and closed
Condition, the two tradeoff, substantially determines the order of magnitude of control frequency), the working condition of charge pump is controlled, battery self-heating is carried out.
Fig. 3 is the working principle diagram of battery self-heating apparatus disclosed by the embodiments of the present invention, and Fig. 4 is that the embodiment of the present invention is public
During the battery self-heating opened charge pump both end voltage change schematic diagram, Fig. 5 be battery disclosed by the embodiments of the present invention from
The schematic diagram of the curent change of battery in heating process.The control process and working principle for illustrating self-heating below with reference to Fig. 3, can
Content is introduced in conjunction with Fig. 4 and Fig. 5 understanding.
As shown in figure 3, the anode of battery is connected with the anode of charge pump, the cathode of battery is connected with the cathode of charge pump.
Battery can be with an ideal voltage source and internal resistance come equivalent, as shown in circuit in dotted line frame in Fig. 3.Remember the open circuit electricity of battery
Pressure, the i.e. output voltage of ideal voltage source are UOC, remember that the equivalent internal resistance value of battery is R, the voltage at charge pump both ends is UC.Capacitor
The capacitance of device C1 is C1, the capacitance of capacitor C2 is C2。
The control process of battery self-heating is as follows:
Under original state, switch S1, S2, S3 are disconnected.
1. controlling charge pump in low-pressure state.
Closure switch S1 and S3, battery are connected in parallel with C1 and C2, and the equivalent capacity of charge pump is C at this timeL=C1+C2.Note
Closure moment is tAMoment, this moment charge pump both end voltage UC=ULA, and have ULA<UOC.Wherein ULAIt is charge pump in low-pressure state
Under, tAThe voltage value at moment.
Battery charges to charge pump, charging current are as follows:
During the charging process, the voltage at charge pump both ends constantly increases, UCThe calculation formula changed over time are as follows:
2. disconnecting the connection of battery and charge pump
In tBMoment (tBDetermination basis specifically control frequency), noteAt this time
S1, S3 are disconnected, battery stops charging to charge pump.Here control frequency just refers to the alternating frequency of charging and discharging, control frequency
Rate once it is determined that, tBIt is easily determined.Such as: determine that control frequency is probably 0.2Hz, a cycle is 5s, that tAAnd tBBetween
Half period, 2.5s should be differed.
3. controlling charge pump in high pressure conditions
It is closed S2, battery and C1 and C2 is connected in series, at this time the equivalent capacity of charge pumpNote closure wink
Between be tCMoment, the tCMoment theoretically with tBMoment is that synchronization, i.e. S1 and S3 disconnect, the moment of S2 closure, but practical feelings
In condition, S1 and S3 are disconnected, and the closure to S2 is poor there are the regular hour, and generally, the time difference is not too large, can regard mistake as
The poor time.Remember charge pump both end voltage UC=UHC, wherein UHCIn a high voltage state for charge pump, tCThe voltage value at moment, according to
Conservation of energy principle has:
U at this timeHC>UOC, charge pump to battery charge, charging current are as follows:
Wherein, negative sign show sense of current with it is as shown in the figure contrary.
During the charging process, charge pump both end voltage constantly reduces, UCThe calculation formula changed over time are as follows:
4. disconnecting the connection of battery and charge pump
In tDMoment (tDDetermination basis specifically control frequency), noteAt this time
S2 is disconnected, charge pump stops charging to battery.Continue to continue to use above-mentioned example: determining that control frequency is probably 0.2Hz, a week
Phase is 5s, that tCAnd tDBetween should also differ half period, 2.5s.
Above step 1.~4. realize the charge and discharge of one-shot battery.Step 4. after, repeat step 1., make electricity
Pond is worked alternatively in discharge condition and charged state.It, equally can be according to energy during 4. 1. step is switched to step
The voltage change at conservation principle calculated charge pump both ends:
Wherein, ULA’Indicate 4. 1. step is switched to step, after closure switch S1 and S3, the voltage value at charge pump both ends.
In the charge and discharge process of battery, since there are internal resistances for inside battery, heat Q=∫ I (t) can be generated2Rdt, from
And battery temperature is increased, realize the function of self-heating.
In practical control, the principal element for influencing battery heat production power is the size and charging and discharging currents of battery equivalent internal resistance
Size.Impedance magnitude of the battery under different pulse frequency is slightly different；ULA, ULB, UHC, UHDWith UOCBetween difference it is then straight
Connect the size for influencing charging and discharging currents.By the setting of reasonable capacitor type selecting and control frequency, it can achieve and efficiently add certainly
Thermal effect.
Above-described embodiment can automatically control charge pump and carry out alternate charge and discharge, to make electricity when battery temperature is low
Pond itself is also corresponding to carry out electric discharge and charging process, and since battery itself has internal resistance, the process of charge and discharge can be such that battery produces
Heat plays the effect to conducting self-heating, which does not need by outside containing source device, can as needed at any time
Self-heating is carried out everywhere, it is greatly convenient for users to use.
The embodiment of the invention also discloses a kind of battery self-heating method, Fig. 6 is a kind of electricity disclosed by the embodiments of the present invention
The flow chart of pond self-heating method, battery self-heating method shown in Fig. 6 can be applied to any one disclosed electricity of above-described embodiment
Pond self-heating apparatus.As shown in fig. 6, battery self-heating method may include:
Step 601: obtaining the work state information of battery, the work state information includes temperature.
Wherein, the work state information may include operating voltage, operating current and temperature.
Step 602: when the temperature is less than preset temperature value, control charge pump is alternately charged and discharged process,
So that the battery corresponding alternately electric discharge and charging process, generate heat.
When the temperature is less than preset temperature value, it was demonstrated that battery Current Temperatures are too low, have been not at it and have worked normally temperature
Range is spent, needs to control battery at this time and carries out self-heating.
Wherein, the control charge pump is alternately charged and discharged process, may include: according to predetermined control strategy with
Preset control frequency control charge pump is alternately charged and discharged process.The determination basis of the predetermined control strategy includes
The circuit structure of the charge pump, the determination basis of the default control frequency include the ac impedance characteristic of the battery and open
Close the life parameter of device.
Step 603: when the temperature of the battery reaches the preset temperature value, controlling the charge pump and stop working.
When the temperature of battery is in normal working temperature range, control stops self-heating process.
Fig. 7 is the flow chart of another battery self-heating method disclosed by the embodiments of the present invention, as shown in fig. 7, in addition
In one realization, battery self-heating method may include:
Step 701: obtaining the work state information of battery, the work state information includes temperature.
Step 702: when the temperature is less than preset temperature value, control charge pump is alternately charged and discharged process,
So that the battery corresponding alternately electric discharge and charging process, generate heat.
Step 703: when the temperature of the battery reaches the preset temperature value, controlling the charge pump and stop working.
Step 704: the operating voltage and operating current of battery described in real-time monitoring.
Step 705: if the operating voltage is more than predetermined voltage threshold or the operating current is more than predetermined current threshold,
The charge pump is then controlled to stop working.
During battery self-heating, if the operating voltage of battery and/or operating current are more than that its is corresponding default
Threshold value then needs to stop self-heating process, in order to avoid there is the dangerous situation that may cause due to over-voltage or overcurrent.
In the present embodiment, the operating voltage and operating current of real-time monitoring battery during self-heating, and in work electricity
In the case where pressure and/or operating current exception, control stops self-heating process in time, avoids the generation of dangerous situation.
For the aforementioned method embodiment, for simple description, therefore, it is stated as a series of action combinations, still
Those skilled in the art should understand that the present invention is not limited by the sequence of acts described, because according to the present invention, it is certain
Step can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know that, it is described in the specification
Embodiment belong to preferred embodiment, it is related that actions and modules are not necessarily necessary for the present invention.
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 device 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.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of battery self-heating apparatus, which is characterized in that including battery, charge pump and controller；
Wherein, the anode of the charge pump is connect with the anode of the battery, and the cathode of the charge pump is negative with the battery
Pole connection；
The controller is connect with the battery and the charge pump respectively, for the work state information according to the battery,
The working condition of the charge pump is controlled, the working condition of the charge pump includes charging, electric discharge and open circuit.
2. self-heating apparatus according to claim 1, which is characterized in that the charge pump is switched capacitor voltage transformation
Device, the charge pump include at least two capacitors and at least three switches, and at least three switch is in different switch states
Under can control the connection status of at least two capacitor.
3. battery self-heating apparatus according to claim 2, which is characterized in that at least three switch is opened in different
It can control series, parallel and the open circuit of at least two capacitor under off status.
4. battery self-heating apparatus according to claim 3, which is characterized in that at least two capacitor includes the first electricity
Hold and the second capacitor, at least three switch include first switch, second switch and third switch；
Wherein, it is provided with third switch on the route that the first capacitor is connect with the cathode of the charge pump, described the
The first switch, the cathode of the first capacitor and institute are provided on the route that two capacitors are connect with the anode of the charge pump
It states and is provided with the second switch on the route between the anode of the second capacitor.
5. battery self-heating apparatus according to claim 4, which is characterized in that the charge pump is in the first working condition
Under, the first switch and the third close the switch, and the second switch disconnects；The charge pump is in the second working condition
Under, the first switch and third switch disconnect, the second switch closure；The charge pump in the operational mode, institute
Stating the first working condition and second working condition, alternately switching carries out.
6. battery self-heating apparatus according to claim 1, which is characterized in that further include: temperature sensor, the temperature
Sensor is connect with the controller and the battery respectively.
7. a kind of battery self-heating method, is applied to battery self-heating apparatus described in any one of claims 1-6, feature exists
In, comprising:
The work state information of battery is obtained, the work state information includes temperature；
When the temperature is less than preset temperature value, control charge pump is alternately charged and discharged process, so that the battery
Corresponding alternately electric discharge and charging process, generate heat；
When the temperature of the battery reaches the preset temperature value, controls the charge pump and stop working.
8. battery self-heating method according to claim 7, which is characterized in that the control charge pump alternately charges
And discharge process, comprising:
The charge pump, which is controlled, according to predetermined control strategy and preset control frequency is alternately charged and discharged process.
9. battery self-heating method according to claim 8, which is characterized in that the determination basis of the predetermined control strategy
The determination basis of circuit structure including the charge pump, the default control frequency includes the ac impedance characteristic of the battery
With the life parameter of switching device.
10. battery self-heating method according to claim 7, which is characterized in that further include:
The operating voltage and operating current of battery described in real-time monitoring；
If the operating voltage is more than predetermined voltage threshold or the operating current is more than predetermined current threshold, the electricity is controlled
Lotus pump stops working.
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| CN201910661436.8A CN110336099B (en) | 2019-07-22 | 2019-07-22 | Battery self-heating method and device |
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| CN201910661436.8A CN110336099B (en) | 2019-07-22 | 2019-07-22 | Battery self-heating method and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110828918A (en) * | 2019-11-13 | 2020-02-21 | 奇瑞新能源汽车股份有限公司 | Control system and control method for automobile power battery |
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| CN110828918A (en) * | 2019-11-13 | 2020-02-21 | 奇瑞新能源汽车股份有限公司 | Control system and control method for automobile power battery |
| CN111762066A (en) * | 2020-07-07 | 2020-10-13 | 深圳威迈斯新能源股份有限公司 | Low-temperature self-heating device and method for power battery and ripple suppression method |
| CN111762066B (en) * | 2020-07-07 | 2022-02-11 | 深圳威迈斯新能源股份有限公司 | Low-temperature self-heating device and method for power battery and ripple suppression method |
| CN112582710A (en) * | 2020-11-12 | 2021-03-30 | 欣旺达电动汽车电池有限公司 | Lithium ion battery self-heating method, lithium ion battery and electric vehicle |
| CN112582710B (en) * | 2020-11-12 | 2022-06-10 | 欣旺达电动汽车电池有限公司 | Lithium ion battery self-heating method, lithium ion battery and electric vehicle |
| CN114583332A (en) * | 2020-12-02 | 2022-06-03 | 北京卫蓝新能源科技有限公司 | Battery heating control device and method thereof |
| CN114583332B (en) * | 2020-12-02 | 2024-04-12 | 北京卫蓝新能源科技有限公司 | Battery heating control device and method thereof |
| CN113715690A (en) * | 2021-08-31 | 2021-11-30 | 经纬恒润(天津)研究开发有限公司 | Power supply system and control method thereof |
| CN113715690B (en) * | 2021-08-31 | 2023-12-01 | 经纬恒润(天津)研究开发有限公司 | Power supply system and control method thereof |
| CN115832525A (en) * | 2021-09-28 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Heating system, heating method and device and electric equipment |
| US11876160B2 (en) | 2021-09-28 | 2024-01-16 | Contemporary Amperex Technology Co., Limited | Heating system, heating method and apparatus, and electric device |
| CN115832525B (en) * | 2021-09-28 | 2024-05-14 | 宁德时代新能源科技股份有限公司 | Heating system, heating method and device and electric equipment |
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