CN106026226A - Battery equalization method and apparatus and battery system - Google Patents
Battery equalization method and apparatus and battery system Download PDFInfo
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- CN106026226A CN106026226A CN201610340965.4A CN201610340965A CN106026226A CN 106026226 A CN106026226 A CN 106026226A CN 201610340965 A CN201610340965 A CN 201610340965A CN 106026226 A CN106026226 A CN 106026226A
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- battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery equalization method and apparatus and a battery system. The battery equalization method comprises the steps of obtaining the voltage values at the two ends of the i<th> battery in the battery pack, wherein i is an integer which is greater than 1 and less than or equal to N; N is the number of the batteries included in the battery pack; and determining the circuit access time of the i<th> resistor which is connected with the i<th> battery in parallel according to the relations between the voltage values and the first preset value and the second preset value. Therefore, the equalizing current of the battery can be adjusted according to the voltages at the two ends of each battery, so that the aging speed, the charging-discharging capacity, the temperature and the like of each battery in the battery pack can be equalized; and the equalizing time tends to be consistent, so that the generation of over-equalization can be avoided, and the service life of the battery pack can be prolonged.
Description
Technical field
The application relates to electronic technology field, particularly relates to a kind of battery equalization method, device and battery system.
Background technology
At present, the electrokinetic cell that industrial circle uses, the electricity being mostly made up of the single battery that multiple performances are identical with parameter
Pond group.For including the set of cells of multiple battery, owing to the parameter of battery can not be accomplished completely the same, therefore there will be
The problem that every cell degradation speed, temperature, charge/discharge capacity are different, this may result in set of cells some battery unit with
Other battery cell capacity do not mate, and then cause the capacity mismatch of whole set of cells.
During charging, other series-connected cell unit are not the most full of, and aging fast battery unit fills with.During electric discharge, other
Battery unit does not the most discharge, and aging fast battery has discharged, and forms wooden pail effect, and the performance restricting whole set of cells is sent out
Wave.
If allowing battery system run in this case and not managed, the service life of battery and the capacity of system all can be subject to
To impact.
Summary of the invention
One of technical problem that the application is intended to solve in correlation technique the most to a certain extent.
To this end, the first of the application purpose is to propose a kind of battery equalization method, the method achieve according to each battery
The voltage at two ends, the euqalizing current of regulating cell so that the aging speed of each battery in set of cells, discharge and recharge and
Temperature etc. equalize, and time for balance reaches unanimity, it is to avoid cross the generation of equilibrium, extend the service life of set of cells.
Second purpose of the application is to propose a kind of battery balanced device.
3rd purpose of the application is to propose a kind of battery system.
For reaching above-mentioned purpose, the application first aspect embodiment proposes a kind of battery equalization method, including:
Obtaining the magnitude of voltage at i-th battery two ends in set of cells, wherein, i is the integer more than 1 and less than or equal to N, and N is electricity
Chi Zuzhong includes the quantity of battery；According to described magnitude of voltage and the first preset value and the relation of the second preset value, determine with described
The time of the i-th resistance access circuit of i-th cell parallel.
The battery equalization method of the embodiment of the present application, according to the magnitude of voltage at each battery two ends in set of cells, presets with first
Value and the relation of the second preset value, determine the time of the resistance access circuit associated with each battery.Hereby it is achieved that according to
The voltage at each battery two ends, the euqalizing current of regulating cell, so that the aging speed of each battery in set of cells, filling
Discharge capacity and temperature etc. equalize, and time for balance reaches unanimity, it is to avoid cross the generation of equilibrium, extend the use of set of cells
Life-span.
For reaching above-mentioned purpose, the application second aspect embodiment proposes a kind of battery balanced device, including:
Acquisition module, for obtaining the magnitude of voltage at i-th battery two ends in set of cells, wherein, i is more than 1 and less than or equal to N
Integer, N is the quantity that set of cells includes battery；Determine module, for according to described magnitude of voltage and the first preset value and
The relation of the second preset value, determines the time of i-th resistance access circuit with described i-th cell parallel.
The battery balanced device of the embodiment of the present application, according to the magnitude of voltage at each battery two ends in set of cells, presets with first
Value and the relation of the second preset value, determine the time of the resistance access circuit associated with each battery.Hereby it is achieved that according to
The voltage at each battery two ends, the euqalizing current of regulating cell, so that the aging speed of each battery in set of cells, filling
Discharge capacity and temperature etc. equalize, and time for balance reaches unanimity, it is to avoid cross the generation of equilibrium, extend the use of set of cells
Life-span.
For reaching above-mentioned purpose, the application third aspect embodiment proposes a kind of battery system, including: set of cells, resistor group
Part, switching device assembly and battery balanced device as above；
Wherein, after in described resistor assembly, i-th resistance is connected with i-th switching device in described switch module, with described
I-th battery series connection in set of cells, i is the integer more than 1 and less than or equal to N, and N is that set of cells includes battery
Quantity.
The battery system of the embodiment of the present application, according to the magnitude of voltage at each battery two ends in set of cells, with the first value preset and
The relation of the second preset value, determines the time of the resistance access circuit associated with each battery.Hereby it is achieved that according to each
The voltage at battery two ends, the euqalizing current of regulating cell, so that the aging speed of each battery in set of cells, discharge and recharge
Amount and the equilibrium such as temperature, and time for balance reaches unanimity, it is to avoid cross the generation of equilibrium, extend the service life of set of cells.
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will be apparent from from the following description of the accompanying drawings of embodiments
With easy to understand, wherein:
Fig. 1 is the schematic flow sheet of the battery equalization method of one embodiment of the application；
Fig. 2 is the battery system structure schematic diagram of one embodiment of the application；
Fig. 3 is the schematic flow sheet of the battery equalization method of another embodiment of the application；
Fig. 4 is the battery balanced device structural representation of one embodiment of the application.
Detailed description of the invention
Embodiments herein is described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to be used for explaining the application, and it is not intended that restriction to the application.
Below with reference to the accompanying drawings the battery equalization method of the embodiment of the present application, device and battery system are described.
Fig. 1 is the battery equalization method schematic flow sheet of one embodiment of the application.
As it is shown in figure 1, this battery equalization method includes:
Step 101, obtains the magnitude of voltage at i-th battery two ends in set of cells, and wherein, i is more than 1 and less than or equal to N
Integer, N is the quantity that set of cells includes battery.
Concrete, the executive agent of the battery equalization method that the present embodiment provides, for the embodiment of the present application provide battery balanced
Device, this device can be configured in any battery system with multiple battery composition, for controlling the electricity of battery system
The equilibrium of each battery in the group of pond.
Wherein, battery balanced device can use various ways, obtains the magnitude of voltage at i-th battery two ends.Such as, permissible
Use voltage sensor that the voltage at battery two ends is monitored, or, it is also possible to the electric current of each battery is flowed into by monitoring,
Determine the magnitude of voltage at each battery two ends etc..
Step 102, according to described magnitude of voltage and the first preset value and the relation of the second preset value, determines and described i-th electricity
The time of the i-th resistance access circuit that pond is in parallel.
Concrete, in the present embodiment, in controlling set of cells during the equilibrium of each battery, can be by according to each battery two
The magnitude of voltage of end, controls the resistance value with this cell parallel, thus controls the euqalizing current of each battery, and then make set of cells
In each battery keep in balance.
Wherein, the first value preset and the second value preset can determine according to the specification of battery and nominal operational parameters, such as,
In rated voltage, minimum voltage and set of cells according to battery, between each battery, the permissible range etc. of voltage difference determines first
The value preset and the second value preset.
It should be noted that switching device can be utilized to control the time in resistance access circuit, such as, utilize switching device
Connection in series with a resistor, controls the time of resistance access circuit.
I.e. above-mentioned steps 102, including: according to described magnitude of voltage and the first preset value and the relation of the second preset value, determine with
The ON time of the i-th switching device of described i-th resistant series.
Concrete, for said method is clearly illustrated, battery system that the embodiment of the present application provide is described below.
Fig. 2 is the battery system structure schematic diagram of one embodiment of the application.
As in figure 2 it is shown, this battery system includes: set of cells 21, resistor assembly 22, switch module 23 and battery balanced dress
Put 24.
Wherein, i-th resistance 22i and i-th switching device 23i in described switch module 23 in described resistor assembly 22
After series connection, in parallel with the i-th battery 21i in described set of cells 21, i is the integer more than 1 and less than or equal to N, N
The quantity of battery is included for set of cells.
Time actually used, above-mentioned resistor assembly 22 is made up of the resistance of N number of mutual insulating, the resistance of this N number of resistance and power
Grade can determine according to the power grade of set of cells, and heating up when normal work of N number of resistance, needs in its temperature
In degree controlled range.It addition, the N number of switching device in switch module 23 is gate-controlled switch device, it can be such as power field
Effect pipe (MOSFET), insulated gate bipolar transistor (Insulated Gate Bipolar Transistor is called for short IGBT)
Etc..Wherein, the parameter of each switching device, it is also desirable to power grade and use scene according to battery determine.Such as electricity
The maximum current of tank discharge or charging is 10A, if considering the surplus of 20%, the rated current needs of the switching device of selection are
12A。
Concrete, as in figure 2 it is shown, in battery system, each battery 21i in a set of cells 21 and resistance 22i
In parallel with a switching device 23i.When switching device 23i turns on, battery 21i is discharged by resistance 22i；When
When switching device 23i disconnects, resistance 22i and battery 21i disconnects.Thus so that the voltage on battery 21i, by electricity
Resistance 22i can regulate flexibly, thus the charging current and discharge current to battery 21i effectively regulates.
In the present embodiment, by judging the magnitude of voltage at any one battery two ends and the relation of preset value in set of cells, determine out
Close the ON time of device, control the charge and discharge time of each battery, so that each battery in set of cells realizes equilibrium.
The battery equalization method of the embodiment of the present application, according to the magnitude of voltage at each battery two ends in set of cells, presets with first
Value and the relation of the second preset value, determine the time of the resistance access circuit associated with each battery.Hereby it is achieved that according to
The voltage at each battery two ends, the euqalizing current of regulating cell, so that the aging speed of each battery in set of cells, filling
Discharge capacity and temperature etc. equalize, and time for balance reaches unanimity, it is to avoid cross the generation of equilibrium, extend the use of set of cells
Life-span.
Fig. 3 is the battery equalization method schematic flow sheet of another embodiment of the application.
As it is shown on figure 3, this battery equalization method, including:
Step 301, obtains the magnitude of voltage at i-th battery two ends in set of cells.
Step 302, it is judged that the value whether described magnitude of voltage is preset less than first, the most then perform step 303, otherwise, hold
Row step 304.
Step 303, determines that the i-th switching device with described i-th resistant series turned off within the whole cycle always.
Step 304, it is judged that the value whether described magnitude of voltage is preset more than second, the most then perform step 305, otherwise, hold
Row step 306.
Step 305, determine with the i-th switching device of described i-th resistant series within the whole cycle constantly on.
Step 306, according to default rule, when determining the conducting with the i-th switching device of described i-th resistant series
Between.
Concrete, above-mentioned steps 306, including:
According toDetermine the ON time of i-th switching device；
Wherein, siFor the dutycycle of i-th switch, uiFor the voltage that i-th battery two ends are current, u1It is the first value preset,
u2It it is the second value preset.
Concrete, in the present embodiment, according to the voltage at battery two ends, control the resistance branch with cell parallel and access circuit
Time, when battery both end voltage is higher, during the value i.e. preset more than second, then control switching device constantly on, thus
Utilize resistance that this batteries is carried out continuous discharge process；When battery both end voltage is in the first value preset and the second value preset
Between time, according to current voltage value and the first value preset and the second magnitude relationship of value preset, adjust leading of switching device
The logical time, thus utilize the electric discharge that this batteries is carried out discontinuously by resistance and the time is controlled；When battery both end voltage is less than first
During the value preset, then control switching device and disconnect always, thus this batteries is not discharged, thus ensure in set of cells
The electric voltage equalization at each battery two ends.
The battery equalization method of the embodiment of the present application, first obtains the magnitude of voltage at each battery two ends in set of cells, then judges
During the value that the magnitude of voltage at battery two ends is preset less than first, then control switching device and turn off within the whole cycle always, if battery
The value that the magnitude of voltage at two ends is preset higher than second, then control switching device constantly within the whole cycle, if battery two ends
Magnitude of voltage between the first value preset and the second value preset, then according to the magnitude of voltage at battery two ends and the first value preset with
The size of the second value preset, determines the ON time of switching device.Hereby it is achieved that make each battery two ends in set of cells
Electric voltage equalization so that the aging speed of each battery in set of cells, discharge and recharge and temperature etc. equilibrium, and equilibrium time
Between reach unanimity, it is to avoid cross the generation of equilibrium, extend the service life of set of cells.
For realizing said method, the application another further aspect provides a kind of battery balanced device.
Fig. 4 is the battery balanced device structural representation of one embodiment of the application.
As shown in Figure 4, this battery balanced device, including:
Acquisition module 41, for obtaining the magnitude of voltage at i-th battery two ends in set of cells, wherein, i is more than 1 and little
In the integer equal to N, N is the quantity that set of cells includes battery；
Determine module 42, for according to described magnitude of voltage and the first preset value and the relation of the second preset value, determine and described the
The time of the i-th resistance access circuit of i cell parallel.
Concrete, the battery balanced device of the present embodiment offer, it is used for performing the battery equalization method that above-described embodiment provides.
In a kind of possible way of realization, above-mentioned determine module 42, specifically for:
Determine the ON time of i-th switching device with described i-th resistant series.
The battery balanced device of the embodiment of the present application, according to the magnitude of voltage at each battery two ends in set of cells, presets with first
Value and the relation of the second preset value, determine the time of the resistance access circuit associated with each battery.Hereby it is achieved that according to
The voltage at each battery two ends, the euqalizing current of regulating cell, so that the aging speed of each battery in set of cells, filling
Discharge capacity and temperature etc. equalize, and time for balance reaches unanimity, it is to avoid cross the generation of equilibrium, extend the use of set of cells
Life-span.
Further, above-mentioned determine module 42, specifically for:
Judge the value whether described magnitude of voltage is preset less than first；
If, it is determined that turn off within the whole cycle with the i-th switching device of described i-th resistant series always.
In a kind of possible way of realization, described determine module 42, specifically for:
Judge the value whether described magnitude of voltage is preset more than second；
If, it is determined that with the i-th switching device of described i-th resistant series within the whole cycle constantly on.
In alternatively possible way of realization, above-mentioned determine module 42, specifically for:
Judge the value whether described magnitude of voltage is preset, and the value preset more than first less than second；
The most then according to the rule preset, determine the ON time of i-th switching device with described i-th resistant series.
Further, determine module 42, specifically for:
According toDetermine the ON time of i-th switching device；
Wherein, siThe dutycycle closed for i-th switch, uiFor the voltage that i-th battery two ends are current, u1Be first preset
Value, u2It it is the second value preset.
The battery balanced device of the embodiment of the present application, first obtains the magnitude of voltage at each battery two ends in set of cells, then judges
During the value that the magnitude of voltage at battery two ends is preset less than first, then control switching device and turn off within the whole cycle always, if battery
The value that the magnitude of voltage at two ends is preset higher than second, then control switching device constantly within the whole cycle, if battery two ends
Magnitude of voltage between the first value preset and the second value preset, then according to the magnitude of voltage at battery two ends and the first value preset with
The size of the second value preset, determines the ON time of switching device.Hereby it is achieved that make each battery two ends in set of cells
Electric voltage equalization so that the aging speed of each battery in set of cells, discharge and recharge and temperature etc. equilibrium, and equilibrium time
Between reach unanimity, it is to avoid cross the generation of equilibrium, extend the service life of set of cells.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Feature is contained at least one embodiment or the example of the application.Additionally, term " first ", " second " are only used for describing
Purpose, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.
Should be appreciated that each several part of the application can realize by hardware, software, firmware or combinations thereof.In above-mentioned reality
Execute in mode, software that multiple steps or method in memory and can be performed by suitable instruction execution system with storage or
Firmware realizes.Such as, if realized with hardware, with the most the same, available well known in the art under
Any one or their combination in row technology realize: have the logic gates for data signal realizes logic function
Discrete logic, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), existing
Field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can
Completing instructing relevant hardware by program, described program can be stored in a kind of computer-readable recording medium,
This program upon execution, including one or a combination set of the step of embodiment of the method.
Storage medium mentioned above can be read only memory, disk or CD etc..Although above it has been shown and described that
Embodiments herein, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the restriction to the application,
Above-described embodiment can be changed in scope of the present application, revises, replace and modification by those of ordinary skill in the art.
Claims (13)
1. a battery equalization method, it is characterised in that comprise the following steps:
Obtaining the magnitude of voltage at i-th battery two ends in set of cells, wherein, i is the integer more than 1 and less than or equal to N, and N is the quantity that set of cells includes battery；
According to described magnitude of voltage and the first preset value and the relation of the second preset value, determine the time of i-th resistance access circuit with described i-th cell parallel.
2. the method for claim 1, it is characterised in that the time of the described i-th resistance access circuit determined with described i-th cell parallel, including:
Determine the ON time of i-th switching device with described i-th resistant series.
3. method as claimed in claim 2, it is characterised in that the ON time of the described i-th switching device determined with described i-th resistant series, including:
Judge the value whether described magnitude of voltage is preset less than first；
If, it is determined that turn off within the whole cycle with the i-th switching device of described i-th resistant series always.
4. method as claimed in claim 2, it is characterised in that the ON time of the described i-th switching device determined with described i-th resistant series, including:
Judge the value whether described magnitude of voltage is preset more than second；
If, it is determined that with the i-th switching device of described i-th resistant series within the whole cycle constantly on.
5. method as claimed in claim 2, it is characterised in that the ON time of the described i-th switching device determined with described i-th resistant series, including:
Judge the value whether described magnitude of voltage is preset, and the value preset more than first less than second；
The most then according to the rule preset, determine the ON time of i-th switching device with described i-th resistant series.
6. method as claimed in claim 5, it is characterised in that the rule that described basis is preset, determines the ON time of i-th switching device with described i-th resistant series, including:
According toDetermine the ON time of i-th switching device；
Wherein, siThe dutycycle closed for i-th switch, uiFor the voltage that i-th battery two ends are current, u1It is the first value preset, u2It it is the second value preset.
7. a battery balanced device, it is characterised in that including:
Acquisition module, for obtaining the magnitude of voltage at i-th battery two ends in set of cells, wherein, i is the integer more than 1 and less than or equal to N, and N is the quantity that set of cells includes battery；
Determine module, for according to described magnitude of voltage and the first preset value and the relation of the second preset value, determine the time of i-th resistance access circuit with described i-th cell parallel.
8. device as claimed in claim 7, it is characterised in that described determine module, specifically for:
Determine the ON time of i-th switching device with described i-th resistant series.
9. device as claimed in claim 8, it is characterised in that described determine module, specifically for:
Judge the value whether described magnitude of voltage is preset less than first；
If, it is determined that turn off within the whole cycle with the i-th switching device of described i-th resistant series always.
10. device as claimed in claim 8, it is characterised in that described determine module, specifically for:
Judge the value whether described magnitude of voltage is preset more than second；
If, it is determined that with the i-th switching device of described i-th resistant series within the whole cycle constantly on.
11. devices as claimed in claim 8, it is characterised in that described determine module, specifically for:
Judge the value whether described magnitude of voltage is preset, and the value preset more than first less than second；
The most then according to the rule preset, determine the ON time of i-th switching device with described i-th resistant series.
12. devices as claimed in claim 11, it is characterised in that described determine module, specifically for:
According toDetermine the ON time of i-th switching device；
Wherein, siThe dutycycle closed for i-th switch, uiFor the voltage that i-th battery two ends are current, u1It is the first value preset, u2It it is the second value preset.
13. 1 kinds of battery systems, it is characterised in that including: set of cells, resistor assembly, switching device assembly and the battery balanced device as described in claim 7-12 is arbitrary；
Wherein, after in described resistor assembly, i-th resistance is connected with i-th switching device in described switch module, connecting with the i-th battery in described set of cells, i is the integer more than 1 and less than or equal to N, and N is the quantity that set of cells includes battery.
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| CN109274140A (en) * | 2017-07-18 | 2019-01-25 | 矢崎总业株式会社 | Battery monitoring apparatus |
| WO2019042400A1 (en) * | 2017-08-31 | 2019-03-07 | 比亚迪股份有限公司 | Battery equalization method and system, vehicle, storage medium, and electronic device |
| CN109950647A (en) * | 2019-03-27 | 2019-06-28 | 联想(北京)有限公司 | A kind of battery system and processing method |
| CN110994054A (en) * | 2018-10-02 | 2020-04-10 | 江西格林德能源有限公司 | Method for rapidly balancing voltage of each battery cell of battery pack |
| CN111245051A (en) * | 2020-01-19 | 2020-06-05 | 恒大新能源汽车科技(广东)有限公司 | Power battery equalizing charging method and device, control equipment and storage medium |
| CN112706655A (en) * | 2021-01-22 | 2021-04-27 | 黄淮学院 | New energy automobile energy balance control method and system based on intelligent Internet of things |
| CN113511108A (en) * | 2020-04-09 | 2021-10-19 | 宁德时代新能源科技股份有限公司 | Control circuit, method and system |
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| WO2021143768A1 (en) * | 2020-01-19 | 2021-07-22 | 恒大新能源汽车投资控股集团有限公司 | Method and apparatus for equalizing charging of power battery, control device and storage medium |
| CN111245051B (en) * | 2020-01-19 | 2021-08-13 | 恒大恒驰新能源汽车科技(广东)有限公司 | Power battery equalizing charging method and device, control equipment and storage medium |
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