CN112531226A - New energy automobile power battery extremely-speed flexible charging control method and system and automobile - Google Patents
New energy automobile power battery extremely-speed flexible charging control method and system and automobile Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—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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- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a method and a system for controlling the super-speed flexible charging of a new-source automobile power battery and an automobile. The control method comprises the steps that firstly, a bidirectional charging system is used for generating sinusoidal alternating current with set frequency to carry out alternating current charging and discharging on a battery, the battery is quickly and efficiently preheated from inside to outside by means of ohmic heat generation of the battery, and preheating is stopped after the battery reaches a set temperature; and then charging the battery by adopting constant current, and after the voltage of the battery reaches a cut-off voltage, performing constant voltage charging on the battery by using the cut-off voltage. The invention improves the charging speed of the new energy automobile, avoids the generation of lithium separation of the battery, has small influence on the service life of the lithium ion battery, does not need additional battery preheating equipment, and has simple realization and very wide application prospect.
Description
Technical Field
The invention belongs to the field of new energy automobile power batteries, and particularly relates to a method and a system for controlling the super-speed flexible charging of a new energy automobile power battery and an automobile.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
As is well known, the ultra-fast charging (charging for 10 minutes, and endurance for 400 kilometers) is an important means for realizing the large-scale popularization of electric vehicles. At present, the ultrahigh power charging infrastructure network is highly valued and actively deployed in all countries in the world. In 2018, the U.S. department of energy (DOE) invested 1900 ten thousand dollars in developing a top-speed charging technology with a charging power of 350kW, and planned to build 2000 top-speed charging stations; automobile companies such as BMW, Daimler, Volkswagen, Ford and the like are jointly building 400 charging stations with 350kW charging power for the European Union; the Japan quick charge association sets out a technical development route for realizing the charging power of 350 kW-400 kW/maximum charging current of 400A in 2025; tesla plans to construct 165 super charging stations with a charging power of 240kW in china. Unfortunately, since the conventional lithium ion power battery cannot withstand such high-rate super-fast charging under safe conditions, the super charging station after being built faces the dilemma that the user is skillful and difficult to cook rice. In fact, under the condition of high-rate quick charge, the lithium ions in the battery move and the electrochemical reaction speed is not fast enough, so that the lithium ions cannot be precipitated in a metal form as soon as being embedded into a graphite electrode, namely, the lithium precipitation is generated, the service life of the battery is seriously shortened, and even safety accidents are caused. In addition, high-rate rapid charging generates a large amount of heat inside the battery, causing consumption of lithium resources and rapid degradation of battery capacity.
Currently, the main methods for improving the rapid charging capability of the battery are to improve the materials for constructing the battery, such as increasing the ionic conductivity and diffusion coefficient of the electrolyte, increasing the specific surface area of the graphite material, and the like. However, most of these methods sacrifice the service life and safety of the battery at normal temperature.
In fact, the charging method is the core for realizing efficient, fast and safe charging of the battery. The traditional constant-current constant-voltage charging method is most widely applied due to simplicity, but cannot solve the contradiction between the charging safety and the charging rapidity. To this end, many scholars propose battery-optimized charging methods.
The existing lithium ion battery charging method is characterized in that constant current charging is respectively carried out on a battery by three currents with different magnitudes, the charging is stopped when the first current Ia charges the battery to the capacity of 2-10%, and the battery is kept stand for a period of time; switching to a second current Ib to continuously charge the battery in a constant current manner until the capacity is 40-70%, stopping charging, and then standing the battery for a period of time; then switching to a third current Ic to continuously charge the battery with constant current until the capacity is 80-95%, and then standing the battery for a period of time; finally, charging the battery in a constant voltage mode until the battery capacity is 100 percent; wherein Ib>Ia，Ic. The charging method can effectively reduce the temperature rise of the battery cell in the high-rate charging process; effectively preventing lithium precipitation in the charging process; promote electric core circulation reversibility, improve the circulation performance. However, the inventor finds that the charging method needs to keep the battery still, so that the charging speed is slow, and the charging current in different charging stages needs to be set according to experience, so that the practicability is poor.
In another lithium battery pack charging method, an internal resistance equivalent model is used as a single battery model, and a model of a series battery pack is equivalent to the series connection of n single battery models, so that a series battery pack model is constructed; setting a charging target, establishing a target function consisting of three sub-targets of a preset charging SOC, a battery temperature and a battery balance, setting a constraint condition, solving to obtain an optimal charging ammeter of the problem at each moment in the expected charging time, and detecting the terminal voltage in real time to adjust the preset charging current. The method not only achieves the target set by the user, but also reduces the inconsistency among the batteries. However, the inventor finds that the charging method needs to model each battery cell in the battery pack, is large in calculation amount and poor in real-time performance, and particularly does not consider the influence on the service life of the battery in the charging target.
Disclosure of Invention
In order to solve at least one problem, the invention provides a method and a system for controlling the super-speed flexible charging of a new-source automobile power battery and an automobile, wherein a 'quick heating-quick charging' integrated control method is adopted.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for controlling the super-speed flexible charging of a power battery of a new energy automobile, which comprises the following steps:
the method comprises the steps of firstly utilizing a charging system to generate sinusoidal alternating current with set frequency to carry out alternating current charging and discharging on a battery, rapidly preheating the battery from inside to outside by means of ohmic heat generation of the battery, and stopping preheating after the battery reaches a set temperature;
and then charging the battery by adopting constant current, and after the voltage of the battery reaches a cut-off voltage, performing constant voltage charging on the battery by using the cut-off voltage.
The invention provides a new energy automobile power battery extremely-speed flexible charging control system, which comprises:
the alternating current preheating control module is used for performing alternating current charging and discharging on the battery by utilizing a sinusoidal alternating current with a set frequency generated by the charging system, rapidly preheating the battery from inside to outside by means of ohmic heat generation of the battery, and stopping preheating after the battery reaches a set temperature;
and the constant-current constant-voltage charging control module charges the battery by adopting constant current, and charges the battery at constant voltage by using cut-off voltage after the voltage of the battery reaches the cut-off voltage.
The invention provides a new energy automobile, which comprises a new energy automobile power battery, a bidirectional charging and discharging system and the high-speed flexible charging control system of the new energy automobile power battery.
The invention has the beneficial effects that:
firstly, the invention adopts a 'quick heating-quick charging' integrated control method, improves the speed of lithium ion movement and electrochemical reaction by improving the temperature of the battery, effectively avoids lithium separation while improving the charging speed of the battery, has little influence on the service life of the battery, and breaks the contradiction between the rapidity and the safety of the battery charging.
Secondly, a bidirectional charging system is used for generating sinusoidal alternating current with certain frequency and amplitude, the battery is preheated from inside to outside by utilizing ohmic heat production and electrochemical heat production of the battery through alternating current charging and discharging of the battery, and the battery preheating device has the advantages of high preheating speed, high efficiency, small damage to the battery and the like, particularly does not need an additional alternating current power supply, and has great development prospect.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic diagram of a control method for very fast flexible charging of a power battery of a new energy automobile according to an embodiment of the invention.
Fig. 2 is a schematic diagram of an equivalent thermal model established by the cylindrical lithium ion battery.
FIG. 3 is a graph of sinusoidal AC current and battery voltage waveforms at a frequency of 1Hz and an amplitude of 3C in accordance with an embodiment of the present invention.
Fig. 4 is a graph of the temperature rise of a battery in accordance with an embodiment of the present invention, in which the battery is ac preheated by sinusoidal ac power having a frequency of 1Hz and an amplitude of 3C.
Fig. 5 is a schematic diagram of charging a battery in a constant current and constant voltage manner according to an embodiment of the present invention.
FIG. 6 is a 5C high rate charging curve in a 55 deg.C oven according to an embodiment of the present invention.
Fig. 7 is a temperature variation curve of charging the battery at different rates in a 55 ℃ incubator according to an embodiment of the present invention.
Fig. 8 is a curve of capacity variation of a battery charged at different rates in a 55 ℃ incubator according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The battery charging process, i.e. the flow of lithium ions from the positive electrode to the negative electrode of the battery, is equivalent to the rate of charging. The battery temperature is increased, so that the speed of lithium ion movement and electrochemical reaction can be greatly increased, lithium ions can uniformly permeate into the graphite cathode, the battery charging speed can be effectively increased, and lithium precipitation is avoided. This provides an effective way for very fast flexible charging of lithium ion batteries.
Example one
Referring to fig. 1, the method for controlling the super-speed flexible charging of the power battery of the new energy automobile in the embodiment includes the following steps:
the method comprises the following steps: the bidirectional charging system is used for generating sine alternating current with set frequency to perform alternating current charging and discharging on the battery, the battery is rapidly preheated from inside to outside by means of ohmic heat generation of the battery, and preheating is stopped after the set temperature is reached.
The lithium ion battery is divided into a core part and a shell part in section by considering the difference between the core temperature and the surface temperature inside the battery. An equivalent thermal model of a cylindrical lithium ion battery is given in fig. 2. From fig. 2, equation (1) gives a differential equation of the core temperature and the surface temperature of the battery, and estimation of the core temperature of the battery can be achieved.
Wherein, Ta、TCAnd TSRespectively representing the external environment temperature, the core temperature of the battery and the surface temperature; q represents a heat generation rate; cCAnd CSRespectively representing the heat capacities of the battery core and the case; rCRepresenting the thermal resistance between the core and the watch case; rSRepresenting the thermal resistance between the watch case and the external environment.
Preferably, a sinusoidal alternating current of a set frequency is generated using a bidirectional charging system. The frequency of the sine alternating current is 1-100 Hz, and the amplitude is 3-5C. The sinusoidal alternating current with the frequency and the amplitude range can realize quick charge and discharge, and quickly achieve the set preheating effect.
Fig. 3 is a sinusoidal ac current of 1Hz frequency and 3C amplitude produced by a bi-directional charging system. When the battery is ac-preheated by the current, the temperature rise curve of the battery is shown in fig. 4, and the time for heating the battery core from 25 ℃ to 50 ℃ is about 300 s.
It should be noted that the structure of the bidirectional charging system can be implemented by using the prior art, and is not described in detail herein.
In some embodiments, the preheating is stopped when the temperature of the battery reaches 50-60 ℃, and if the temperature of the battery is lower than the temperature range, the activity of the battery does not reach the optimal state; if the battery temperature is higher than the temperature range, the battery may be damaged, and the life and performance of the battery may be reduced.
This embodiment improves the battery temperature through sinusoidal alternating current carries out exchange charge-discharge to the battery, can show transmission process and the reaction rate of accelerating the inside lithium ion of battery, reduces battery impedance, effectively avoids analysing lithium, reduces the negative effect to battery life-span.
Step two: referring to fig. 5, the battery is charged with a constant current, and after the battery voltage reaches a cutoff voltage, the battery is charged with a constant voltage at the cutoff voltage.
Preferably, after the temperature of the battery is raised to 50-60 ℃, the battery is charged by adopting constant current of 5-6C; when the battery voltage reaches the cut-off voltage, the battery is charged at the cut-off voltage. As shown in fig. 6, the voltage-current change curve of the battery charging with 5C current in the 55C oven.
Typically, after the total charge time reaches 10-12 minutes, the battery temperature is rapidly reduced to ambient temperature by natural cooling.
In the second step, when the battery is charged in a high-temperature environment, the internal resistance of the battery is small, the heat generation is less, the temperature difference between the battery and the external environment is large, and the heat dissipation is fast, so that the temperature of the battery cannot continuously rise when the battery is charged at a high rate. In addition, because the quick charging time is short, generally within 10-12 minutes, and then the battery is quickly cooled to the ambient temperature by natural cooling, the battery side reaction is not caused, and the lithium precipitation can be effectively reduced. As shown in fig. 7, the temperature change curves for charging the battery at different rates in a 55 ℃ incubator. It can be seen that the battery can be cooled to ambient temperature within 10 minutes when 5C high rate charging is used.
Fig. 8 shows the capacity variation curve of the battery charged at different rates in the 55 ℃ incubator. It can be seen that 80% of the electricity can be charged within 10 minutes when 5C high-rate charging is adopted; and the same charge amount is charged for 40-50 minutes when 1C charging is adopted.
In the embodiment, a 'quick heating-quick charging' integrated control method is adopted, the speed of lithium ion movement and electrochemical reaction is increased by increasing the temperature of the battery, the charging speed of the battery is increased, lithium separation is effectively avoided, the influence on the service life of the battery is small, and the contradiction between the rapidness and the safety of battery charging is broken; the bidirectional charging system is used for generating sinusoidal alternating current with certain frequency and amplitude, the battery is preheated from inside to outside by alternating current charging and discharging of the battery and ohmic heat generation and electrochemical heat generation of the battery, and the bidirectional charging system has the advantages of high preheating speed, high efficiency, small damage to the battery and the like, particularly does not need an additional alternating current power supply, and has great development prospect.
Example two
The embodiment provides a flexible charge control system of new energy automobile power battery extremely fast, its characterized in that includes:
(1) the alternating current preheating control module carries out alternating current charging and discharging on the battery by utilizing sinusoidal alternating current with the set frequency of 1Hz and the amplitude of 3C in the figure 3, quickly preheats the battery from inside to outside by means of ohmic heat production of the battery, the preheating is stopped after the set temperature is reached, the temperature change curve of the battery is shown in the figure 4, and the time for heating the battery core from 25 ℃ to 50 ℃ is about 300 s.
Preferably, a sinusoidal alternating current of a set frequency is generated using a bidirectional charging system. The frequency of the sine alternating current is 1-100 Hz, and the amplitude is 3-5C. The sinusoidal alternating current with the frequency and the amplitude range can realize quick charge and discharge, and quickly achieve the set preheating effect.
It should be noted that the structure of the bidirectional charging system can be implemented by using the prior art, and is not described in detail herein.
In some embodiments, the preheating is stopped when the temperature of the battery reaches 50-60 ℃, and if the temperature of the battery is lower than the temperature range, the activity of the battery does not reach the optimal state; if the battery temperature is higher than the temperature range, the battery may be damaged, and the life and performance of the battery may be reduced.
This embodiment improves the battery temperature through sinusoidal alternating current carries out exchange charge-discharge to the battery, can show transmission process and the reaction rate of accelerating the inside lithium ion of battery, reduces battery impedance, effectively avoids analysing lithium, reduces the negative effect to battery life-span.
(2) The constant current and constant voltage charging control module, as shown in fig. 5, charges the battery with a constant current, and charges the battery with a constant voltage at a cut-off voltage when the voltage of the battery reaches the cut-off voltage.
Preferably, after the temperature of the battery is raised to 50-60 ℃, the battery is charged by adopting constant current of 5-6C; when the battery voltage reaches the cut-off voltage, the battery is charged at the cut-off voltage. A 5C current charging curve was used at a temperature of 55C as shown in figure 6.
Typically, after the total charge time reaches 10-12 minutes, the battery temperature is rapidly reduced to ambient temperature by natural cooling. When the battery is charged in a high-temperature environment, the internal resistance of the battery is small, heat generation is less, the temperature difference between the battery and the external environment is large, and heat dissipation is fast, so that the temperature of the battery cannot continuously rise when the battery is charged at a high rate. In addition, because the quick charging time is short, generally within 10-12 minutes, and then the battery is quickly cooled to the ambient temperature by natural cooling, the battery side reaction is not caused, and the lithium precipitation can be effectively reduced. Fig. 7 shows the temperature variation curve of the battery charged at different rates in the 55 ℃ incubator. It can be seen that the battery can be cooled to ambient temperature within 10 minutes when 5C high rate charging is used.
Fig. 8 shows the capacity variation curve of the battery charged at different rates in the 55 ℃ incubator. It can be seen that 80% of the electricity can be charged within 10 minutes when 5C high-rate charging is adopted; and the same charge amount is charged for 40-50 minutes when 1C charging is adopted.
The embodiment adopts a 'quick heating-quick charging' integrated control principle, improves the speed of lithium ion movement and electrochemical reaction by improving the temperature of the battery, effectively avoids lithium separation while improving the charging speed of the battery, has little influence on the service life of the battery, and breaks the contradiction between the rapidity and the safety of the battery charging; the bidirectional charging system is used for generating sinusoidal alternating current with certain frequency and amplitude, the battery is preheated from inside to outside by alternating current charging and discharging of the battery and ohmic heat generation and electrochemical heat generation of the battery, and the bidirectional charging system has the advantages of high preheating speed, high efficiency, small damage to the battery and the like, particularly does not need an additional alternating current power supply, and has great development prospect.
EXAMPLE III
The embodiment provides a new energy automobile, which comprises a new energy automobile power battery, a bidirectional charging and discharging system and the very-fast flexible charging control system of the new energy automobile power battery as described in the second embodiment.
The new energy automobile power battery and the bidirectional charging and discharging system are both of the existing structures, and detailed description is omitted here.
The specific structure of the new energy automobile power battery super-speed flexible charging control system is described in the second embodiment, and the description is not repeated here.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for controlling the super-speed flexible charging of a power battery of a new energy automobile is characterized by comprising the following steps:
the method comprises the following steps that a bidirectional charging system is utilized to generate sine alternating current with set frequency to carry out alternating current charging and discharging on a battery, the battery is rapidly preheated from inside to outside by means of ohmic heat generation of the battery, and preheating is stopped after the temperature reaches a set temperature;
and charging the battery by adopting constant current, and performing constant voltage charging on the battery by using cut-off voltage after the voltage of the battery reaches the cut-off voltage.
2. The method for controlling the very-fast flexible charging of the power battery of the new energy automobile according to claim 1, characterized in that a bidirectional charging system is used for generating a sinusoidal alternating current with a set frequency.
3. The method for controlling the super-speed flexible charging of the power battery of the new energy automobile according to claim 1, wherein the frequency of the sinusoidal alternating current is 1-100 Hz, and the amplitude is 3-5C.
4. The method for controlling the very-fast flexible charging of the new energy automobile power battery according to claim 1, characterized in that the preheating is stopped when the battery temperature reaches 50 ℃ to 60 ℃.
5. The method for controlling the very-fast flexible charging of the power battery of the new energy automobile according to claim 1, characterized in that the battery is charged by adopting a constant current of 5C-6C.
6. The utility model provides a flexible charge control system of new energy automobile power battery extremely fast which characterized in that includes:
the alternating current preheating control module is used for performing alternating current charging and discharging on the battery by utilizing sinusoidal alternating current with set frequency, rapidly preheating the battery from inside to outside by means of ohmic heat generation of the battery, and stopping preheating after the set temperature is reached;
and the constant-current constant-voltage charging control module charges the battery by adopting constant current, and charges the battery at constant voltage by using cut-off voltage after the voltage of the battery reaches the cut-off voltage.
7. The system for controlling the very-fast flexible charging of the power battery of the new energy automobile according to claim 6, wherein the frequency of the sinusoidal alternating current is 1-100 Hz, and the amplitude is 3-5C.
8. The system for controlling the very-fast flexible charging of the power battery of the new energy automobile according to claim 6, characterized in that the preheating is stopped when the temperature of the battery reaches 50 ℃ to 60 ℃.
9. The very-fast flexible charging control system for the new energy automobile power battery according to claim 6, characterized in that the battery is charged by adopting a constant current of 5C-6C.
10. The new energy automobile is characterized by comprising a new energy automobile power battery, a bidirectional charging and discharging system and the very-fast flexible charging control system of the new energy automobile power battery as claimed in any one of claims 6 to 9.
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| CN202011403993.9A CN112531226A (en) | 2020-12-04 | 2020-12-04 | New energy automobile power battery extremely-speed flexible charging control method and system and automobile |
| PCT/CN2021/098977 WO2022116506A1 (en) | 2020-12-04 | 2021-06-08 | Extreme fast flexible charging control method and system for new energy vehicle power battery, and vehicle |
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| CN113991781A (en) * | 2021-10-27 | 2022-01-28 | 贵州梅岭电源有限公司 | Low-temperature quick charging method and charger for lithium ion battery |
| WO2022116506A1 (en) * | 2020-12-04 | 2022-06-09 | 山东大学 | Extreme fast flexible charging control method and system for new energy vehicle power battery, and vehicle |
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| CN115189047A (en) * | 2022-07-27 | 2022-10-14 | 吉林大学 | Lithium ion battery lithium analysis-free control method and system |
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| CN111971847A (en) * | 2018-04-16 | 2020-11-20 | 美国电化学动力公司 | System and method for assisting battery charging through heating |
| CN109659637A (en) * | 2018-11-08 | 2019-04-19 | 北京交通大学 | The lithium ion battery low-temperature charging method of alternating current-direct current superposition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022116506A1 (en) * | 2020-12-04 | 2022-06-09 | 山东大学 | Extreme fast flexible charging control method and system for new energy vehicle power battery, and vehicle |
| CN113991781A (en) * | 2021-10-27 | 2022-01-28 | 贵州梅岭电源有限公司 | Low-temperature quick charging method and charger for lithium ion battery |
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| Publication number | Publication date |
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| WO2022116506A1 (en) | 2022-06-09 |
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