CN116937716A - Charging method, charging device, electronic equipment and storage medium - Google Patents
Charging method, charging device, electronic equipment and storage medium Download PDFInfo
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- 238000007600 charging Methods 0.000 title claims abstract description 176
- 238000000034 method Methods 0.000 title claims abstract description 136
- 238000010277 constant-current charging Methods 0.000 claims abstract description 110
- 238000010280 constant potential charging Methods 0.000 claims abstract description 101
- 230000000670 limiting effect Effects 0.000 claims abstract description 88
- 230000008569 process Effects 0.000 claims description 101
- 230000032683 aging Effects 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
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- 230000003247 decreasing effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 230000006399 behavior Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
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- 238000004880 explosion Methods 0.000 description 1
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- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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- 239000007773 negative electrode material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Classifications
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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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
- 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
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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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
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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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
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The disclosure relates to a charging method, a device, an electronic apparatus and a storage medium, wherein the method is applied to a terminal apparatus and comprises the following steps: acquiring a first protection current of a first constant-current charging stage, a first limiting current of a first constant-voltage charging stage and an overcharging voltage of the first constant-voltage charging stage; determining a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage according to the first limit current, and determining a protection voltage of the second constant-current charging stage according to the first protection current, the first limit current and the overcharging voltage; and under the condition that the voltage reaches the protection voltage in the second constant-current charging stage, carrying out constant-current charging by adopting the second protection current, and carrying out constant-voltage charging by taking the second limiting current as an initial current in the second constant-voltage charging stage.
Description
Technical Field
The disclosure relates to the technical field of charging, and in particular relates to a charging method, a charging device, electronic equipment and a storage medium.
Background
In recent years, terminal devices have become more and more functional and have a higher power demand. Under the condition of limited battery capacity improvement, rapid charging technology is continuously developed to meet the increasing electric quantity demand, and the charging speed is increasingly high. The rapid charging technology mainly improves the charging speed by improving parameters such as voltage, current, power and the like of charging. In the related art, the problems of overcharge and the like easily occur in the rapid charging process, so that the battery is seriously heated and has certain damage to the battery.
Disclosure of Invention
To overcome the problems in the related art, embodiments of the present disclosure provide a charging method, apparatus, electronic device, and storage medium to solve the drawbacks in the related art.
According to a first aspect of embodiments of the present disclosure, there is provided a charging method, applied to a terminal device, including:
acquiring a first protection current of a first constant-current charging stage, a first limiting current of a first constant-voltage charging stage and an overcharging voltage of the first constant-voltage charging stage, wherein the first constant-current charging stage and the first constant-voltage charging stage are charging stages in the current charging process;
determining a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage according to the first limit current, and determining a protection voltage of the second constant-current charging stage according to the first protection current, the first limit current and the overcharging voltage, wherein the second constant-current charging stage and the second constant-voltage charging stage are charging stages in a next charging process;
and under the condition that the voltage reaches the protection voltage in the second constant-current charging stage, carrying out constant-current charging by adopting the second protection current, and carrying out constant-voltage charging by taking the second limiting current as an initial current in the second constant-voltage charging stage.
In one embodiment, the determining the second protection current of the second constant current charging phase according to the first limiting current includes:
the first limiting current is determined as the second protection current.
In one embodiment, the determining the second limiting current of the second constant voltage charging phase according to the first limiting current includes:
determining a second current difference value in a next charging process according to the first current difference value in the current charging process and a preset updating coefficient;
and determining the second limiting current according to the difference value of the first limiting current and the second current.
In one embodiment, the determining the protection voltage of the second constant current charging stage according to the first protection current, the first limiting current, and the overcharge voltage includes:
determining a predicted overcharge voltage of the second constant-voltage charge stage according to the first protection current, the first limiting current, the overcharge voltage, and an internal resistance aging coefficient;
and determining the protection voltage of the second constant current charging stage according to the limiting voltage and the predicted overcharging voltage.
In one embodiment, further comprising:
acquiring the internal resistance of a battery of the charged battery;
and determining the internal resistance aging coefficient according to the internal resistance of the battery.
In one embodiment, further comprising:
charging with a preset current to a voltage rise to the protection voltage in the second constant current charging stage; and/or the number of the groups of groups,
and in the second constant-current charging stage, performing constant-current charging by adopting the second protection current until the voltage rises to the limit voltage, and entering a constant-voltage charging stage.
In one embodiment, further comprising:
in the first charging process, under the condition that the constant current charging stage charges to the limit voltage by the preset current, the constant voltage charging stage is entered, and the constant voltage charging stage performs the constant voltage charging by taking the initial limit current as the initial current.
According to a second aspect of embodiments of the present disclosure, there is provided a charging apparatus applied to a terminal device, including:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first protection current of a first constant-current charging stage, a first limiting current of a first constant-voltage charging stage and an overcharging voltage of the first constant-voltage charging stage, wherein the first constant-current charging stage and the first constant-voltage charging stage are charging stages in the current charging process;
the determining module is used for determining a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage according to the first limit current, and determining a protection voltage of the second constant-current charging stage according to the first protection current, the first limit current and the overcharging voltage, wherein the second constant-current charging stage and the second constant-voltage charging stage are charging stages in the next charging process;
and the first charging module is used for carrying out constant-current charging by adopting the second protection current under the condition that the voltage reaches the protection voltage in the second constant-current charging stage, and carrying out constant-voltage charging by taking the second limiting current as an initial current in the second constant-voltage charging stage.
In one embodiment, the determining module is configured to, when determining the second protection current in the second constant current charging stage according to the first limiting current, specifically:
the first limiting current is determined as the second protection current.
In one embodiment, the determining module is configured to, when determining the second limiting current of the second constant voltage charging stage according to the first limiting current, specifically:
determining a second current difference value in a next charging process according to the first current difference value in the current charging process and a preset updating coefficient;
and determining the second limiting current according to the difference value of the first limiting current and the second current.
In one embodiment, the determining module is configured to, when determining the protection voltage of the second constant current charging stage according to the first protection current, the first limiting current and the overcharging voltage, specifically:
determining a predicted overcharge voltage of the second constant-voltage charge stage according to the first protection current, the first limiting current, the overcharge voltage, and an internal resistance aging coefficient;
and determining the protection voltage of the second constant current charging stage according to the limiting voltage and the predicted overcharging voltage.
In one embodiment, the method further comprises a coefficient determination module for:
acquiring the internal resistance of a battery of the charged battery;
and determining the internal resistance aging coefficient according to the internal resistance of the battery.
In one embodiment, the device further comprises a second charging module for:
charging with a preset current to a voltage rise to the protection voltage in the second constant current charging stage; and/or the number of the groups of groups,
and in the second constant-current charging stage, performing constant-current charging by adopting the second protection current until the voltage rises to the limit voltage, and entering a constant-voltage charging stage.
In one embodiment, the apparatus further comprises a third charging module for:
in the first charging process, under the condition that the constant current charging stage charges to the limit voltage by the preset current, the constant voltage charging stage is entered, and the constant voltage charging stage performs the constant voltage charging by taking the initial limit current as the initial current.
According to a third aspect of embodiments of the present disclosure, there is provided an electronic device comprising a memory for storing computer instructions executable on a processor for performing the computer instructions based on the charging method of the first aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of the first aspect.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
according to the method and the device, the first protection current of the first constant-current charging stage, the first limiting current of the first constant-voltage charging stage and the overcharging voltage of the first constant-voltage charging stage are obtained in the current charging process, so that the second protection current of the second constant-current charging stage and the second limiting current of the second constant-voltage charging stage in the next charging process can be determined according to the first limiting current in the current charging process, the first limiting current and the overcharging voltage, the protection voltage of the second constant-current charging stage in the next charging process can be determined according to the first protection current, the first limiting current and the overcharging voltage in the current charging process, and finally the second protection current can be used for constant-current charging under the condition that the voltage reaches the protection voltage in the second constant-current charging stage in the next charging process, and the second limiting current is used as the initial current in the second constant-voltage charging stage. Because the charging parameters in the process are obtained in each charging process, the charging parameters of the next process are determined according to the charging parameters in the process, and the parameters are all parameters for protecting the charging safety, the problems of overcharge, serious heating and the like in each process can be avoided, the damage to the battery is avoided, and the safety of the battery and the mobile phone is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a flow chart of a charging method shown in an exemplary embodiment of the present disclosure;
fig. 2 is a schematic structural view of a charging device shown in an exemplary embodiment of the present disclosure;
fig. 3 is a block diagram of an electronic device shown in an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
Overcharging is a common abuse behavior in the use process of batteries such as lithium ion batteries, and is a behavior that the charging exceeds the limit voltage of the battery, and the overcharging easily causes electrolyte in the lithium ion battery to decompose and release gas, so that the battery bulges, and even smoke and fires can be generated seriously. When overcharging, the voltage of the battery increases rapidly along with the increase of polarization, and irreversible change of the structure of the positive electrode active material can be caused, so that electrolyte is decomposed, a large amount of gas is generated, a large amount of heat is released, the temperature and the internal pressure of the battery increase rapidly, the internal diaphragm melts or contracts, contact short circuit of positive and negative electrode materials is caused, and explosion and combustion hidden danger exist.
For example, the charging process of the battery includes a constant current charging stage and a constant voltage charging stage, and the constant current charging is performed by reducing the current when the constant current charging reaches the limit voltage of the battery management chip, and at the voltage, the battery voltage is rapidly increased at the charging end of the battery, but the current is generally not reduced timely or is reduced to a limited extent, and often the overcharge behavior occurs due to the rapid increase of the voltage, particularly, the battery aging is aggravated during the use process of the battery, the polarization is increased, and the voltage rising speed is further accelerated, so that the overcharge is more likely to occur after the aging, and the potential safety hazard is brought to the battery.
In a first aspect, at least one embodiment of the present disclosure provides a charging method, please refer to fig. 1, which illustrates a flow of the method, including step S101 and step S103.
The method is applied to a terminal device, which may be a User Equipment (UE), a mobile device, a User terminal, a cellular phone, a cordless phone, a personal digital assistant (Personal Digital Assistant, PDA) handheld device, a computing device, a vehicle-mounted device, a wearable device, or the like. The terminal device has a battery, and the battery of the terminal device can be charged by using accessories such as a charging adapter, wherein the charging adapter can be in a wired form or a wireless form.
The method can be applied to a scene of charging the terminal equipment, wherein the scene comprises a plurality of continuous charging processes, two adjacent charging processes are taken as examples for describing the method in detail, and for convenience of description, the former charging process is called a current charging process, and the latter charging process is called a next charging process.
In step S101, a first protection current of a first constant current charging stage, a first limiting current of a first constant voltage charging stage, and an overcharge voltage of the first constant voltage charging stage are obtained, wherein the first constant current charging stage and the first constant voltage charging stage are charging stages in a current charging process.
The charging process may include at least one charging cycle, and one charging cycle refers to a process of charging the electric quantity of the battery from a non-full-electric state to a full-electric state. In the case that the charging process includes one charging cycle, the method acquires parameters such as the first protection current, the first limiting current, and the overcharge voltage in each charging cycle, so that the corresponding parameters of the next charging cycle are updated by using step S102. In the case that the charging process includes a plurality of charging cycles, the method uses the same charging parameters, that is, the same first protection current, first limiting current, and protection voltage, in a plurality of charging cycles of one charging process, and obtains parameters, such as the first protection current, the first limiting current, and the overcharge voltage, in a last charging cycle of the charging process, so as to update the corresponding parameters of the next charging process by using step S102.
Each charging cycle in the charging process includes a constant current charging phase and a constant voltage charging phase. The specific process is as follows: after the charging is started, firstly, a constant-current charging stage is started, the preset current is used for constant-current charging to enable the voltage to rise, the current is reduced from the preset current to the protection current under the condition that the voltage rises to the protection voltage, the protection current is used for constant-current charging to enable the voltage to rise continuously, the constant-voltage charging stage is started after the voltage rises to the limit voltage, and the constant-voltage charging stage can be used for constant-voltage charging by taking the limit current as the initial current after the current is reduced from the protection current to the limit current.
In the step, the protection current of the constant-current charging stage, the limiting current of the constant-voltage charging stage and the overcharging voltage of the constant-voltage charging stage in the current charging process are obtained. In order to distinguish the constant current charging stage, the constant voltage charging stage, the protection current and the limiting current in the next charging process, the constant current charging stage in the current charging process is changed to a first constant current charging stage, the constant current charging stage in the next charging process is changed to a second constant current charging stage, the constant voltage charging stage in the current charging process is changed to a first constant voltage charging stage, the constant voltage charging stage in the next charging process is changed to a second constant voltage charging stage, the protection current in the current charging process is referred to as a first protection current, the protection current in the next charging process is referred to as a second protection current, the limiting current in the current charging process is referred to as a first limiting current, and the limiting current in the next charging process is referred to as a second limiting current. The overcharge voltage refers to a voltage value at which the voltage is higher than the limit voltage due to current falling hysteresis in the constant voltage charging stage.
It is understood that there is no protection current in the first charging process, so that in the first charging process, when the constant current charging stage charges with a preset current to a voltage rise to a limit voltage, the constant voltage charging stage is entered, and the constant voltage charging is performed with the initial limit current as an initial current in the constant voltage charging stage. Based on the above, under the condition that the current charging process is the first charging process, a preset current is obtained as a protection current of the process, and an initial limiting current is obtained as a limiting current of the process. The first charging process refers to the first or previous N charging cycles of the battery that the terminal is configured to identify, where N is the number of charging cycles in each charging process.
In step S102, a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage are determined according to the first limit current, and a protection voltage of the second constant-current charging stage is determined according to the first protection current, the first limit current and the overcharging voltage, wherein the second constant-current charging stage and the second constant-voltage charging stage are charging stages in a next charging process.
In one possible embodiment, the first limiting current may be used as the second protection current, i.e. the limiting current of the current charging process is used as the protection current of the next charging process.
In another possible embodiment, the second limiting current of the second constant voltage charging phase in the next charging process may be determined according to the first limiting current of the first constant voltage charging phase in the current charging process in the following manner: firstly, determining a second current difference value in a next charging process according to a first current difference value in a current charging process and a preset updating coefficient; next, the second limiting current is determined based on the first limiting current and the second current difference. Illustratively, the second limiting current I is calculated according to the following formula 2 ：I 2 ＝I 1 -ΔI 2 ，ΔI 2 ＝αΔI 1 Wherein I 2 For the first limiting current, I 1 For a first limiting current, deltaI 2 As the second current difference, deltaI 1 For the first current difference, α is a preset update coefficient. It can be understood that the current difference in the first charging process is the difference between the preset current and the initial limiting current, and then the current difference in each charging process is updated by using the update coefficient.
In a further possible embodiment, the first protection power in the current charging process may be based on the following mannerThe current, the first limiting current and the overcharge voltage determine a protection voltage of a second constant current charging stage in a next charging process: firstly, determining a predicted overcharge voltage of a second constant-voltage charging stage in a next charging process according to the first protection current, the first limiting current, the overcharge voltage and an internal resistance aging coefficient; next, a protection voltage of a second constant current charging stage in a next charging process is determined according to the limiting voltage and the predicted overcharging voltage. Illustratively, the protection voltage in the next charging pass is calculated according to the following formula: v (V) 2 ＝V 0 -k*ΔV 1 *I 0 /I 1 Wherein V is 2 For the protection voltage in the next charging process, V 0 To limit voltage, I 0 For the first protection current, I 1 For a first limiting current, deltaV 1 And k is the internal resistance aging coefficient for the overcharge voltage in the current charging process.
Optionally, a chip with a record storage function is arranged in the terminal device, and the chip can be used for calculating the internal resistance value of the battery and further determining the internal resistance aging coefficient k according to the internal resistance value. Based on this, the internal resistance of the battery to be charged can be obtained, and the internal resistance aging coefficient can be determined from the internal resistance of the battery. For example, the internal resistance aging coefficient may be updated before each calculation of the protection voltage, or periodically at a certain period.
In step S103, constant-current charging is performed using the second protection current in a case where the voltage reaches the protection voltage in the second constant-current charging stage, and constant-voltage charging is performed using the second limiting current as an initial current in the second constant-voltage charging stage.
In the next charging process, charging with a preset current to a voltage rise to the protection voltage in a second constant current charging stage; and/or in the next charging process, in the second constant-current charging stage, under the condition that the voltage rises to the limit voltage after constant-current charging is performed by adopting the second protection current, entering a constant-voltage charging stage.
After the next charging process starts, firstly, a second constant-current charging stage is started, the preset current is used for constant-current charging to enable the voltage to rise, the current is reduced from the preset current to a second protection current under the condition that the voltage rises to the protection voltage, the second protection current is used for constant-current charging to enable the voltage to rise continuously, the second constant-voltage charging stage is started after the voltage rises to the limit voltage, and the constant-voltage charging can be carried out by taking the second limit current as the initial current after the current is reduced from the second protection current to the second limit current in the second constant-voltage charging stage.
According to the method and the device, the first protection current of the first constant-current charging stage, the first limiting current of the first constant-voltage charging stage and the overcharging voltage of the first constant-voltage charging stage are obtained in the current charging process, so that the second protection current of the second constant-current charging stage and the second limiting current of the second constant-voltage charging stage in the next charging process can be determined according to the first limiting current in the current charging process, the first limiting current and the overcharging voltage, the protection voltage of the second constant-current charging stage in the next charging process can be determined according to the first protection current, the first limiting current and the overcharging voltage in the current charging process, and finally the second protection current can be used for constant-current charging under the condition that the voltage reaches the protection voltage in the second constant-current charging stage in the next charging process, and the second limiting current is used as the initial current in the second constant-voltage charging stage. Because the charging parameters in the process are obtained in each charging process, the charging parameters of the next process are determined according to the charging parameters in the process, and the parameters are all parameters for protecting the charging safety, the problems of overcharge, serious heating and the like in each process can be avoided, the damage to the battery is avoided, and the safety of the battery and the mobile phone is improved.
In one embodiment of the present disclosure, each charging process includes a charging cycle. Then at the 1 st charging cycle of the battery, the battery is charged with a preset current I 0 Constant current charging is carried out, and when the charging reaches the limit voltage V set by the battery 0 At this time, ΔI is reduced 1 To I 1 Constant voltage charging with gradually decreasing current is performed, and at this time, if the battery is overcharged, an overcharge voltage overcharge amount DeltaV is recorded 1 . At the next charging, i.e. the 2 nd charging cycle, the headFirst, a preset current I is used 0 Constant current charging is carried out, and when the protection voltage V is reached 2 At the beginning of decreasing the current to I 1 In I 1 Constant current to limit voltage V 0 At this time, the current DeltaI is reduced 2 To I 2 Constant voltage charging is performed with gradually decreasing current. Wherein V is 2 ＝V 0 -k*ΔV 1 *I 0 /I 1 Where k is the internal resistance aging coefficient, which is determined by monitoring the internal resistance of the battery chip, ΔI 2 ＝αΔI 1 Where α is the update coefficient. And so on, in the nth charging cycle, when the constant current is charged until the voltage reaches V n ＝V 0 -k*ΔV n-1 *I n-2 /I n-1 When the current is reduced to I n-1 When constant current charging is continued until the voltage reaches the limit voltage V 0 At this time, the current is reduced to I n ＝I n-1 -αΔI n-1 Constant voltage charging is performed with gradually decreasing current.
According to a second aspect of the embodiments of the present disclosure, a charging device is provided and applied to a terminal device, please refer to fig. 2, the device includes:
an obtaining module 201, configured to obtain a first protection current of a first constant-current charging stage, a first limiting current of a first constant-voltage charging stage, and an overcharge voltage of the first constant-voltage charging stage, where the first constant-current charging stage and the first constant-voltage charging stage are charging stages in a current charging process;
a determining module 202, configured to determine a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage according to the first limit current, and determine a protection voltage of the second constant-current charging stage according to the first protection current, the first limit current, and the overcharge voltage, where the second constant-current charging stage and the second constant-voltage charging stage are charging stages in a next charging process;
the first charging module 203 is configured to perform constant current charging with the second protection current when the voltage reaches the protection voltage in the second constant current charging stage, and perform constant voltage charging with the second limiting current as an initial current in the second constant voltage charging stage.
In some embodiments of the present disclosure, the determining module is configured to, when determining the second protection current of the second constant current charging stage according to the first limiting current, specifically:
the first limiting current is determined as the second protection current.
In some embodiments of the present disclosure, the determining module is configured to, when determining the second limiting current of the second constant voltage charging stage according to the first limiting current, specifically:
determining a second current difference value in a next charging process according to the first current difference value in the current charging process and a preset updating coefficient;
and determining the second limiting current according to the difference value of the first limiting current and the second current.
In some embodiments of the present disclosure, the determining module is configured to, when determining the protection voltage of the second constant current charging stage according to the first protection current, the first limiting current, and the overcharging voltage, specifically:
determining a predicted overcharge voltage of the second constant-voltage charge stage according to the first protection current, the first limiting current, the overcharge voltage, and an internal resistance aging coefficient;
and determining the protection voltage of the second constant current charging stage according to the limiting voltage and the predicted overcharging voltage.
In some embodiments of the present disclosure, the system further comprises a coefficient determination module for:
acquiring the internal resistance of a battery of the charged battery;
and determining the internal resistance aging coefficient according to the internal resistance of the battery.
In some embodiments of the present disclosure, a second charging module is further included for:
charging with a preset current to a voltage rise to the protection voltage in the second constant current charging stage; and/or the number of the groups of groups,
and in the second constant-current charging stage, performing constant-current charging by adopting the second protection current until the voltage rises to the limit voltage, and entering a constant-voltage charging stage.
In some embodiments of the present disclosure, a third charging module is further included for:
in the first charging process, under the condition that the constant current charging stage charges to the limit voltage by the preset current, the constant voltage charging stage is entered, and the constant voltage charging stage performs the constant voltage charging by taking the initial limit current as the initial current.
The specific manner in which the various modules perform the operations in relation to the apparatus of the above embodiments has been described in detail in relation to the embodiments of the method of the first aspect and will not be described in detail here.
In accordance with a third aspect of embodiments of the present disclosure, reference is made to fig. 3, which schematically illustrates a block diagram of an electronic device. For example, apparatus 300 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.
Referring to fig. 3, apparatus 300 may include one or more of the following components: a processing component 302, a memory 304, a power supply component 306, a multimedia component 308, an audio component 310, an input/output (I/O) interface 312, a sensor component 314, and a communication component 316.
The processing component 302 generally controls overall operation of the apparatus 300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing element 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 302 can include one or more modules that facilitate interactions between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.
Memory 304 is configured to store various types of data to support operations at device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power component 306 provides power to the various components of the device 300. The power components 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.
The multimedia component 308 includes a screen between the device 300 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 308 includes a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the apparatus 300 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 310 is configured to output and/or input audio signals. For example, the audio component 310 includes a Microphone (MIC) configured to receive external audio signals when the device 300 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, audio component 310 further comprises a speaker for outputting audio signals.
The I/O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 314 includes one or more sensors for providing status assessment of various aspects of the apparatus 300. For example, the sensor assembly 314 may detect the on/off state of the device 300, the relative positioning of the components, such as the display and keypad of the device 300, the sensor assembly 314 may also detect a change in position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration/deceleration of the device 300, and a change in temperature of the device 300. The sensor assembly 314 may also include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 316 is configured to facilitate communication between the apparatus 300 and other devices, either wired or wireless. The device 300 may access a wireless network based on a communication standard, such as WiFi,2G or 3G,4G or 5G, or a combination thereof. In one exemplary embodiment, the communication part 316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the power supply methods of electronic devices described above.
In a fourth aspect, the present disclosure also provides, in an exemplary embodiment, a non-transitory computer-readable storage medium, such as memory 304, comprising instructions executable by processor 320 of apparatus 300 to perform the method of powering an electronic device described above. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A charging method, applied to a terminal device, comprising:
acquiring a first protection current of a first constant-current charging stage, a first limiting current of a first constant-voltage charging stage and an overcharging voltage of the first constant-voltage charging stage, wherein the first constant-current charging stage and the first constant-voltage charging stage are charging stages in the current charging process;
determining a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage according to the first limit current, and determining a protection voltage of the second constant-current charging stage according to the first protection current, the first limit current and the overcharging voltage, wherein the second constant-current charging stage and the second constant-voltage charging stage are charging stages in a next charging process;
and under the condition that the voltage reaches the protection voltage in the second constant-current charging stage, carrying out constant-current charging by adopting the second protection current, and carrying out constant-voltage charging by taking the second limiting current as an initial current in the second constant-voltage charging stage.
2. The charging method of claim 1, wherein the determining the second protection current for the second constant current charging phase based on the first limiting current comprises:
the first limiting current is determined as the second protection current.
3. The charging method according to claim 1, wherein the determining the second limiting current of the second constant voltage charging stage from the first limiting current includes:
determining a second current difference value in a next charging process according to the first current difference value in the current charging process and a preset updating coefficient;
and determining the second limiting current according to the difference value of the first limiting current and the second current.
4. The charging method of claim 1, wherein the determining the protection voltage for the second constant current charging phase based on the first protection current, the first limiting current, and the overcharge voltage comprises:
determining a predicted overcharge voltage of the second constant-voltage charge stage according to the first protection current, the first limiting current, the overcharge voltage, and an internal resistance aging coefficient;
and determining the protection voltage of the second constant current charging stage according to the limiting voltage and the predicted overcharging voltage.
5. The charging method according to claim 1, characterized by further comprising:
acquiring the internal resistance of a battery of the charged battery;
and determining the internal resistance aging coefficient according to the internal resistance of the battery.
6. The charging method according to claim 1, characterized by further comprising:
charging with a preset current to a voltage rise to the protection voltage in the second constant current charging stage; and/or the number of the groups of groups,
and in the second constant-current charging stage, performing constant-current charging by adopting the second protection current until the voltage rises to the limit voltage, and entering a constant-voltage charging stage.
7. The charging method according to claim 1, characterized by further comprising:
in the first charging process, under the condition that the constant current charging stage charges to the limit voltage by the preset current, the constant voltage charging stage is entered, and the constant voltage charging stage performs the constant voltage charging by taking the initial limit current as the initial current.
8. A charging device, characterized by being applied to a terminal device, comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first protection current of a first constant-current charging stage, a first limiting current of a first constant-voltage charging stage and an overcharging voltage of the first constant-voltage charging stage, wherein the first constant-current charging stage and the first constant-voltage charging stage are charging stages in the current charging process;
the determining module is used for determining a second protection current of a second constant-current charging stage and a second limit current of a second constant-voltage charging stage according to the first limit current, and determining a protection voltage of the second constant-current charging stage according to the first protection current, the first limit current and the overcharging voltage, wherein the second constant-current charging stage and the second constant-voltage charging stage are charging stages in the next charging process;
and the first charging module is used for carrying out constant-current charging by adopting the second protection current under the condition that the voltage reaches the protection voltage in the second constant-current charging stage, and carrying out constant-voltage charging by taking the second limiting current as an initial current in the second constant-voltage charging stage.
9. An electronic device comprising a memory, a processor for storing computer instructions executable on the processor, the processor for performing the computer instructions based on the charging method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the charging method according to any one of claims 1 to 7.
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| CN202210343318.4A CN116937716A (en) | 2022-03-31 | 2022-03-31 | Charging method, charging device, electronic equipment and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210343318.4A CN116937716A (en) | 2022-03-31 | 2022-03-31 | Charging method, charging device, electronic equipment and storage medium |
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