CN112039155A - Charging control method for charging box, charging box and computer readable storage medium - Google Patents
Charging control method for charging box, charging box and computer readable storage medium Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 19
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- 230000008569 process Effects 0.000 description 7
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- 238000001514 detection method Methods 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
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- 238000010281 constant-current constant-voltage charging Methods 0.000 description 2
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- 229910014913 LixSi Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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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
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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
-
- 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
- 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
- H02J7/00306—Overdischarge protection
-
- 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
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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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1025—Accumulators or arrangements for charging
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a charging box charging control method, a charging box and a computer readable storage medium, wherein the charging box charging control method comprises the following steps: acquiring the aging condition of a battery of the charging box; and adjusting the charging and discharging parameters of the battery in the charging box according to the mapping relation between the aging condition of the battery in the charging box and the charging parameters of the battery in the charging box and the aging condition of the battery in the charging box. The invention can solve the problem of excessive damage of the battery caused by improper charging mode, over-charging and over-discharging and other factors of the battery, and is beneficial to prolonging the service life of the battery.
Description
Technical Field
The present invention relates to the field of charging technologies, and in particular, to a charging box charging control method, a charging box, and a computer-readable storage medium.
Background
In the use process of the wireless earphone charging box, the wireless earphone charging box is charged and discharged frequently, and the battery ages to a certain extent along with the time. Because user's use habit is different, the ageing speed and the ageing degree of lithium cell also are different in the box that charges, if user's charge-discharge mode is improper, will lead to the battery ageing speed too fast, cause the battery capacity to descend seriously, and then reduce wireless earphone's duration.
Disclosure of Invention
The invention mainly aims to provide a charging control method of a charging box, the charging box and a computer readable storage medium, aiming at solving the problem of excessive damage of a battery caused by improper charging mode, over-charging and over-discharging and the like of the battery and prolonging the service life of the battery.
In order to achieve the above object, the present invention provides a charging control method for a charging box, including:
acquiring the aging condition of a battery of the charging box;
and adjusting the charging and discharging parameters of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery.
Optionally, before the step of acquiring the aging condition of the charging box battery, the charging box charging control method further includes:
charging the battery of the charging box to obtain the current battery capacity when the battery voltage reaches a preset voltage threshold;
calculating the ratio of the acquired battery capacity to the initial battery capacity to obtain the health degree of the battery of the charging box;
and calculating to obtain the aging condition of the charging box battery according to the health degree of the charging box battery.
Optionally, the charging parameters of the battery of the charging box include a charging current and a charging and discharging threshold.
Optionally, the aging condition comprises an aging degree;
the step of adjusting the charging parameters of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery specifically comprises:
adjusting the charging current of the charging box battery according to the mapping relation between the aging degree of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the charging and discharging threshold value.
Optionally, the aging condition further comprises an aging speed;
the charging control method of the charging box further comprises the following steps:
acquiring the cycle number of charging and discharging of a battery of the charging box;
and calculating to obtain the aging speed of the charging box battery according to the aging degree of the charging box battery and the cycle number of charging and discharging of the charging box battery.
Optionally, the step of adjusting the charging parameter of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameter and the aging condition of the charging box battery specifically includes:
adjusting the charging current of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the charging and discharging threshold value.
Optionally, the step of adjusting the charging parameter of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameter and the aging condition of the charging box battery specifically includes:
adjusting the charging current of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging and discharging threshold value.
Optionally, before the step of adjusting the charging parameter of the charging box battery according to the mapping relationship between the aging speed of the charging box battery and the battery charging parameter and the aging condition of the charging box battery, the charging box charging control method further includes:
and establishing a mapping relation between the aging condition of the battery of the charging box and the charging parameters of the battery according to the empirical values or the test data.
The invention also provides a charging box, which comprises a battery, a processor, a memory and a charging box charging control program stored on the memory and capable of running on the processor, wherein the charging box charging control program realizes the steps of the charging box charging control method when being executed by the processor.
The present invention also proposes a computer-readable storage medium having stored thereon a charging-box charging control program which, when executed by a processor, implements the steps of the charging-box charging control method as described above.
According to the invention, the aging condition of the battery of the charging box is obtained, the charging and discharging parameters of the battery of the charging box are adjusted according to the mapping relation between the aging condition of the battery of the charging box and the charging parameters of the battery and the aging condition of the battery of the charging box, the charging strategy is adjusted by monitoring the aging condition of the lithium battery of the charging box, the charging parameters are adjusted from two angles of aging speed and aging degree, the aging speed of the lithium battery is effectively slowed down, the service life and the endurance capacity of the battery are improved, the excessive damage of the battery caused by factors such as improper charging mode of the battery, excessive charging and discharging and the like is solved by dynamically adjusting the charging parameters, and the service life of the battery is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a charging control method for a charging box according to an embodiment of the present invention;
FIG. 2 is a schematic flowchart of a charging control method for a charging box according to another embodiment of the present invention;
FIG. 3 is a schematic flowchart illustrating a charging control method for a charging box according to another embodiment of the present invention;
FIG. 4 is a detailed flowchart of one embodiment of step S200 in FIG. 1;
fig. 5 is a schematic circuit diagram of a charging box according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Processor with a memory having a plurality of |
40 | Earphone |
| 20 | |
50 | |
| 30 | Charging IC | BT1 | Charging box battery |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The invention provides a charging control method of a charging box.
Referring to fig. 1, in an embodiment of the present invention, the charging control method of the charging box includes:
s100, acquiring the aging condition of the battery of the charging box;
it is understood that at present, most of the batteries provided in the charging box are powered by lithium batteries, but in other embodiments, other batteries, such as lead-acid batteries, may be used. A commonly used lithium battery is a graphite negative electrode lithium battery. Further, a silicon material and lithium may be used to form a multiphase alloy (LixSi), i.e., a silicon negative electrode lithium battery. The lithium battery has long service life, or after aging to a certain extent through multiple charge-discharge cycles, for example, the structure of the material expands after lithium ions are continuously inserted, so that the overall thickness of the battery can be increased to different extents. Or, the internal resistance of the battery may increase in a certain aging condition of the battery or in a scene with too low temperature, and the internal resistance of the battery may further increase as the aging condition of the battery increases. Since the internal resistance of the battery increases after the battery is aged, the floating voltage of the aged battery is greater than that of the unaged battery in the case where the same amount of current passes through the battery. In addition, an anode (negative electrode) of a lithium battery is composed of a lithium compound having a nonmetallic property, and is connected to a cathode (positive electrode) composed of carbon. During charging, lithium ions (or charged atoms) are forced to move from the negative electrode to the positive electrode under the action of an external voltage and then are stored in the positive electrode. When discharging, the stored lithium ions flow back to the negative electrode to form current, and energy is provided for the charging box. And the negative pole of the battery gradually deteriorates in a plurality of chemical changes along with the charging box. The lithium compound constituting the negative electrode continuously absorbs and releases lithium ions in chemical reactions, and the structure thereof is changed, so that ion exchange becomes difficult, and the actual capacity of the battery in a charge case becomes lower. The charging box battery comprises an actual capacity and a rated capacity (i.e. a factory capacity), wherein the actual capacity is the capacity of the charging box battery when the voltage of the charging box battery reaches a preset charging voltage under the current environment of the charging box battery, namely the charging box battery is fully charged, and the actual capacity is reduced along with the aging of the battery and the change of the environmental temperature. The preset capacitance value is the capacitance value when the rechargeable battery box is fully charged in the best state when the rechargeable battery box leaves the factory. The rated capacity value of each charging box battery is determined at the time of factory shipment. For example, when a intact charging box battery is normally charged from zero percent to one hundred percent, the electric quantity value obtained by the charging box battery is the actual capacity, and the actual capacity is equal to the rated capacity; when an aged charging box battery is charged from zero percent to one hundred percent, the value of the electric quantity obtained by the charging box battery, namely the actual capacity, is smaller than the rated capacity. Because user's use habit is different, the ageing speed and the ageing degree of lithium cell also are different in the box that charges, and the charge-discharge mode is improper, for example continue to adopt the heavy current to charge, will accelerate the ageing of the box battery that charges, cause the battery capacity to descend seriously, and then reduce wireless earphone's duration, lead to the battery explosion even.
It is also understood that the battery is generally used in an environment where the number of charge and discharge is large (specifically, the number of charge and discharge limits of the lithium battery may be referred to), or the battery is used for a long time (for example, for 1 year or more), or the battery is used by a user for a long time in a low temperature environment. When the battery is charged and discharged, the difference of the aging conditions before and after the battery is not large in a short time, the embodiment can acquire the use habit of the user (whether the temperature is high or low), or count the charging and discharging times of the charging box, or start timing after the charging box battery is used for the first time, and when one or more combinations of the above conditions meet the triggering conditions, the aging condition of the charging box battery is acquired. The aging condition of the battery in the charging box can be determined according to one judgment factor or a combination of a plurality of judgment factors, such as the capacity of the battery, the internal resistance of the battery or whether the battery swells, wherein the capacity of the battery, the internal resistance of the battery, the volume and the like can be determined according to detection parameters arranged in the charging box. Also, the detection may be made in particular when a condition for acquiring the ageing status of the battery of the charging box is triggered, when the battery is charged, for example periodically, or when the battery starts to be charged and/or is fully charged. Furthermore, it may also be detected when the battery is not charged, e.g. periodically, which may be set longer, e.g. a week, even a month, etc.
And S200, adjusting the charging and discharging parameters of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery.
In this embodiment, the charging parameters may include, but are not limited to, a charging current and a charging/discharging threshold, and may further include a charging voltage in some embodiments. The obtained aging condition may be an aging condition smaller than an aging condition threshold value, which may indicate that the battery is not aged, or an aging condition larger than the aging condition threshold value, which may indicate that the battery is aged. The embodiment may compare the obtained aging condition with the aging condition threshold, and when the aging condition reaches the aging condition threshold, trigger the adjustment of the battery parameter of the charging box. In the charging process, parameters of the current charging box battery, such as charging current, charging and discharging threshold values and the like, are adjusted through the mapping relation between the aging condition of the charging box battery and the battery charging parameters and the acquired aging condition. The parameters of the battery charging box can be set to be parameters when the battery charging speed is kept faster within the range of the safety threshold allowed by the current aging condition. Therefore, the charging parameters can be adjusted according to the current aging condition of the battery, so that the charging parameters are always kept at the maximum allowable parameters of the battery, and the charging speed of the battery is accelerated; meanwhile, the current is not larger than the maximum allowable parameter in the charging process, so that the problem that the battery capacity is seriously reduced due to the fact that the battery aging speed is too high due to improper setting of the charging and discharging parameters is solved, the cruising ability of the wireless earphone is further reduced, and the charging safety of the battery is favorably improved. In some embodiments, different gears may be set for the aging condition of the battery, for example, a gear of a current charging parameter, a gear of a charging parameter that needs to be adjusted, or a gear that prohibits charging and discharging of the battery may be maintained, and according to different gears, a corresponding battery charging parameter may be set, which is favorable for considering both the charging speed and the charging safety of the battery, for example, when the aging condition reaches the gear that prohibits charging and discharging of the battery, it indicates that the battery of the charging box has exceeded a safe use range, the charging and discharging of the charging box may be directly disconnected, and in some embodiments, an alarm signal may be further sent to prompt a user to stop using or replace the battery, so as to ensure the.
According to the invention, the aging condition of the battery of the charging box is obtained, the charging and discharging parameters of the battery of the charging box are adjusted according to the mapping relation between the aging condition of the battery of the charging box and the charging parameters of the battery and the aging condition of the battery of the charging box, the charging strategy is adjusted by monitoring the aging condition of the lithium battery of the charging box, the charging parameters are adjusted from two angles of aging speed and aging degree, the aging speed of the lithium battery is effectively slowed down, the service life and the endurance capacity of the battery are improved, the problem of excessive damage of the battery caused by factors such as improper battery charging mode, excessive charging and discharging and the like is solved by dynamically adjusting the charging parameters, and the service life of the battery is prolonged.
Referring to fig. 2, in an embodiment, before the step of acquiring the aging condition of the battery in the charging box, the charging box charging control method further includes:
step S300, charging the battery of the charging box, and acquiring the current battery capacity when the battery voltage reaches a preset voltage threshold;
step S400, calculating the ratio of the acquired battery capacity to the initial battery capacity to obtain the health degree of the battery of the charging box;
and S500, calculating and obtaining the aging condition of the charging box battery according to the health degree of the charging box battery.
In this embodiment, when the condition of obtaining the aging degree of the battery in the charging box is triggered, the battery in the battery charging box is charged, or in the normal process of the battery in the battery box, the current battery capacity when the battery voltage reaches the preset voltage threshold is obtained. When the charging box is charged, three charging modes, namely a constant-voltage charging mode, a constant-current charging mode and a trickle charging mode, are usually adopted: the method comprises the steps of firstly charging a battery with a certain constant current, keeping the constant current charging cut-off voltage unchanged after the voltage of the battery reaches the preset constant current charging cut-off voltage, and finally charging with a small current. In the constant-current constant-voltage charging method, a stage of charging the battery with a constant current may be referred to as a constant-current charging stage, and a stage of charging the battery with a constant-current charging cutoff voltage, which is a boundary voltage between the constant-current charging stage and the constant-voltage charging stage, may be referred to as a constant-voltage charging stage. In the constant-current constant-voltage charging mode, the battery voltage of the battery needs to be detected periodically or in real time, so that when the battery voltage is detected to reach a preset voltage threshold value, namely when the battery is indicated to be fully charged, the battery capacity at the moment is detected. And calculating the acquired battery capacity at the moment and the initial capacity of the battery, wherein the preset voltage threshold and the initial capacity of the battery can be stored in a storage device in the charging box, and the initial capacity of the battery can be a measured value when the battery leaves a factory. The battery capacity can be obtained by a charging chip or an electricity meter of the charging box, and the battery capacity of this embodiment represents the amount of electricity flowing through the battery of the charging box during the charging process, and the unit is milliampere hour (mAh). Specifically, the fuel gauge obtains the remaining capacity and the aging parameter (i.e. the battery health degree) of the battery of the charging box, and the fuel gauge can detect the lithium battery of the charging box in real time so as to record the health degree of the battery. The degree of health may be calculated as a ratio between the current battery capacity, i.e., the actual capacity, and the initial capacity (rated capacity (factory capacity)) of the battery, and may be expressed in terms of percentage. The higher the percentage of capacitance, the better the performance of the battery in the charging box, i.e. the health level, and the lower the percentage of capacitance, the worse the performance of the battery in the charging box, i.e. the deeper the aging level, or the lower the temperature of the environment in which the battery is currently charged. For example, the initial use of the battery measures 400mAh, and after a period of use, the current battery capacity is detected, that is, the actual capacity is reduced to 380mAh, and the health degree is 380/400-95%. The aging condition comprises an aging degree and an aging speed, the aging degree and the health degree can be calculated by a formula, the aging degree is 1-the health degree of the battery, and the aging degree is 5% when the health degree is 95%.
Referring to fig. 3, in an embodiment, the charging control method of the charging box further includes:
step 600, acquiring the cycle number of charging and discharging of a battery of a charging box;
and 700, calculating to obtain the aging speed of the charging box battery according to the aging degree of the charging box battery and the cycle number of charging and discharging of the charging box battery.
In this embodiment, the state of charge of the battery of the charging box device may be obtained to determine whether the charge capacity reaches a charging threshold or the cycle number of the discharging battery during charging and discharging. The charge state of the battery can be detected through the charge state detection circuit, and the cycle working frequency of the battery can be detected through a counter arranged on the charging box device. The counter can be used for recording the cycle working times of charging and discharging the battery, and the counter can be an accumulation counter, and the accumulation counter is increased by one every time the battery is charged or discharged. Specifically, the number of times of battery cycling is determined by the battery capacity, for example, the battery is charged once when the battery capacity is higher than a preset charging threshold, the accumulator is increased by one, and the battery is discharged once when the battery capacity is lower than the preset threshold. For example, when the charging box is charged to a certain threshold (e.g. 90%), the battery capacity is reduced to a certain extent (e.g. 10%) during use, which is a charging and discharging cycle, and the number of charging and discharging cycles during use of the charging box is recorded. The aging rate can be expressed as ((1-degree of battery health)/number of charge and discharge cycles of the battery).
Referring to fig. 4, in an embodiment, the aging degree of the battery in the charging box may be mapped to the charging current and the charging/discharging threshold respectively, and similarly, the aging speed of the battery in the charging box may be mapped to the charging current and the charging/discharging threshold respectively, or the aging speed of the battery in the charging box may be mapped to the charging current and the aging speed of the battery in the charging box may be mapped to the charging/discharging threshold. After the aging conditions such as the aging degree and the aging speed are obtained, the charging parameters can be adjusted through the mapping relation established among the aging degree and the aging speed, the charging current, the charging and discharging threshold value and other charging parameters.
For example, the charging current of the charging box battery is adjusted according to the mapping relation between the aging degree of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging degree of the charging box battery and the charging and discharging threshold value.
Or adjusting the charging current of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging degree of the charging box battery and the charging and discharging threshold value.
Or adjusting the charging current of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging and discharging threshold value.
Specifically, in an embodiment, the step of adjusting the charging parameter of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameter and the aging condition of the charging box battery specifically includes:
step S210, adjusting the charging current of the charging box battery according to the mapping relation between the aging degree of the charging box battery and the charging current;
along with the increase of the aging degree of the battery, the actual capacity of the charging box becomes very small, and when the actual capacity of the battery of the charging box becomes very small, the charging box still adopts large current for charging, the battery of the charging box can quickly generate heat, the aging of the battery of the charging box is accelerated, and even the battery explodes, so that great loss is brought to a user. Specifically, the obtained charging current value adjusts the charging current of the charging box, and after the charging current value is adjusted, the charging current value of the charging box is the charging current which is most suitable for the current situation, so that the aging of a battery of the charging box can be reduced, and the safety of the battery of the charging box can be ensured. In other embodiments, the charging prompt message may be sent to prompt the user whether to charge the charging box battery with the charging current value, and the user may select the charging box battery with the maximum charging current when the charging box battery is needed, so as to achieve the purpose of fast charging.
And S220, adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging degree of the charging box battery and the charging and discharging threshold value.
In this embodiment, the internal resistance of the battery increases as the battery ages, so that when the same amount of current passes through the battery, the floating voltage of the aged battery is greater than that of the unaged battery. Since the measured cell voltage is composed of the floating voltage of the cell and the open circuit voltage of the cell, the open circuit voltage of the aged cell is smaller than that of the unaged cell under the condition that the measured cell voltage is the same. That is, when the battery voltage reaches the preset constant current charging cut-off voltage, the open circuit voltage is reduced compared with that when the battery is not aged, the reduction of the open circuit voltage leads the duration of the constant current charging stage to be shortened, and the charging efficiency of the constant current charging stage is higher compared with that of the constant voltage charging stage, so that the shortening of the duration of the constant current charging stage leads the overall charging duration of the constant current and constant voltage charging mode to be increased, and the charging efficiency of the battery is affected. For a battery after aging, when its battery voltage reaches a predetermined constant current charge cut-off voltage, its open circuit voltage is reduced compared to that when it is not aged, just because this reduction in open circuit voltage results in a shorter duration of the constant current charge phase. In this embodiment, the charging box may be configured to charge the wireless headset, avoid overcharging when the charging box itself is charged, and avoid overdischarging when discharging, and compensate and adjust the charging and discharging threshold voltage according to a mapping relationship between the aging degree of the battery of the charging box and the charging and discharging threshold, so as to obtain an adjusted constant current charging cut-off voltage and a discharging cut-off voltage, and thus, when the battery voltage of the aged battery reaches the adjusted constant current charging cut-off voltage, the open-circuit voltage of the aged battery may be kept unchanged compared with that when the aged battery is not aged, thereby solving the problem that the time length of the constant current charging stage is shortened, which results in the reduction of the charging and discharging efficiency of the battery. Therefore, the preset constant-current charging cut-off voltage and the preset discharging voltage are adjusted by utilizing the aging degree of the battery and the charging and discharging threshold voltage, the purpose of adjusting the duration of the constant-current charging stage according to the aging degree of the battery can be realized, the aging speed of the lithium battery can be effectively reduced, and the service life and the cruising ability of the battery are improved.
In an embodiment, before the step of adjusting the charging parameter of the charging box battery according to the mapping relationship between the aging speed of the charging box battery and the battery charging parameter and the aging speed of the charging box battery, the charging box charging control method further includes:
and establishing a mapping relation between the aging condition of the battery of the charging box and the charging parameters of the battery according to the empirical values or the test data. And establishing a mapping relation between the aging speed of the battery and the charging current and a mapping relation between the aging degree of the lithium battery and charging and discharging through actual requirements and tests.
In this embodiment, the correlation between the battery charging parameter and the battery aging condition may be obtained through the check value or the test data. For example, when the number of charge and discharge cycles of the battery reaches a predetermined number and the ambient temperature of the battery reaches a predetermined temperature, the aging conditions such as the aging speed and the aging degree of the battery, and the corresponding relationship between the charging current and the charge and discharge threshold voltage establish a corresponding mapping relationship. Or, in the aging test process, after the battery of the charging box is controlled to be charged to reach a certain threshold (e.g. 90%), the electric quantity of the battery is controlled to be reduced to a certain degree (e.g. 10%), and in the process, the electric quantity of the battery, namely the charge state of the battery, the ambient temperature, the battery condition, the cycle working frequency of the battery, the charging current, the charging and discharging threshold and the like are recorded. Moreover, under different environmental temperatures and working cycle times, a curve of the battery capacity (aging condition) when the charging reaches the charging threshold value can be detected, and a function of the battery capacity (aging condition) with respect to the charging and discharging electric quantity, the charging current, the charging and discharging threshold value, the working cycle times of the battery and the like can be obtained. Or the battery aging condition may be a tabular mapping of battery capacitance with respect to charge current and charge-discharge threshold. In one embodiment, different charging currents and charging/discharging thresholds may be set under the same aging condition of the battery, and corresponding battery temperatures, charging times, charging amounts, and the like are recorded to determine the charging currents and the charging/discharging thresholds that need to be set under different aging degrees.
Thus, the data is stored in the storage device in the form of a table or a curve. And during charging, calling a charging mapping relation in the storage device to determine the charging current.
Specifically, the mapping relationship between the charging condition and the charging parameter is a table stored in the storage device, and the mapping relationship is in a discrete form. The relation between the capacities of a plurality of batteries and the charging current corresponding to the cycle working times of the batteries is included. In actual detection, the point of the electric charge capacity may be different from the point in the charging mapping relation table, and at this time, the charging current corresponding to the closest point to the detected point may be selected in the table as the current charging current. Or the mapping relation may be a curve stored in the storage device, that is, the mapping relation may be a binary function of the charging current with respect to the battery capacity and the battery cycle number, and when the current battery cycle number and the current battery capacity of the battery are detected, the battery cycle number and the battery state of charge are substituted into the function to determine the charging current and the charging and discharging threshold values.
The invention also provides a charging box.
Referring to fig. 5, the charging box comprises a battery BT1, a processor 10, a memory 20, and a charging box charging control program stored on the memory 20 and operable on the processor 10, wherein the charging box charging control program, when executed by the processor 10, implements the steps of the charging box charging control method according to the above embodiment.
The charging box comprises a box body (not shown), a discharging interface arranged in the box body and a charging interface arranged on the box body, wherein the charging box further comprises a battery BT1 arranged in the box body and a processor 10 electrically connected with the battery BT1, the discharging interface is electrically connected with the battery BT1, the charging interface is electrically connected with the battery BT1, specifically, the discharging interface is electrically connected with the battery BT1, and the charging interface is electrically connected with the battery BT 1. The processor 10 is used for judging the aging degree of the battery BT1 and adjusting the charging parameters; in addition, the charging box processor 10 is further configured to count the number of charging and discharging times of the charging box, when the charging box reaches a certain threshold (e.g. 90%), the electric quantity of the battery BT1 is reduced to a certain degree (e.g. 10%) during use as a charging and discharging cycle, and the number of charging and discharging cycles during use of the charging box is recorded, and the memory 20 is configured to store a program run by the processor 10; in some optional embodiments, the processor 10 may be a Central Processing Unit (CPU), and may also be other general-purpose processors 10, a Digital signal processor 10 (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and the like. The general purpose processor 10 may be a microprocessor 10 or the processor 10 may be any conventional processor 10 or the like. The memory 20 may be an internal storage unit of the device, such as a hard disk or a memory of the device. The memory 20 may also be an external storage device of the device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the device. Further, the memory 20 may also include both an internal storage unit of the device and an external storage device. The memory 20 is used for storing the computer program and other programs and data required by the device. The memory 20 may also be used to temporarily store data that has been output or is to be output. It should be noted that the memory 20 and the processor 10 may be separately disposed electronic devices, or may be integrated in the same chip, and the embodiments of the present invention are not limited thereto. The charging box further includes:
the charging IC30, the charging IC30 is electrically connected with the processor 10, and the charging IC30 performs charging according to the charging parameters of the processor 10;
the earphone charging module 40 is configured to charge a wireless earphone, and an earphone detection circuit is further disposed in the charging box, when an earphone is detected to be connected, the earphone charging module 40 converts electric energy stored in the battery BT1 into charging electric energy of the wireless earphone to charge the wireless earphone, but in other embodiments, the processor 10 may also establish communication connection with the wireless earphone, and when it is determined that the wireless earphone needs to be charged, the earphone charging module 40 is controlled to charge the wireless earphone;
the electricity meter 50 is used for acquiring the residual capacity and the aging parameters (namely the health degree of the battery BT 1) of the battery BT1 of the charging box, and the electricity meter 50 can perform real-time detection on the lithium battery BT1 of the charging box and record the health degree of the lithium battery BT1 (for example, the capacity measured by the initial use of the battery BT1 is 400mAh, and the health degree is 380/400 which is 95% after the use is reduced to 380mAh after a period of time).
The present invention further provides a computer-readable storage medium, where a charging box charging control program is stored on the computer-readable storage medium, and the charging box charging control program, when executed by a processor, implements the steps of the charging box charging control method according to the foregoing embodiments, and is not described herein again.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A charging control method for a charging box is characterized by comprising the following steps:
acquiring the aging condition of a battery of the charging box;
and adjusting the charging and discharging parameters of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery.
2. The charge cassette charge control method according to claim 1, characterized in that, before said step of acquiring the aging condition of the charge cassette battery, the charge cassette charge control method further comprises:
charging the battery of the charging box to obtain the current battery capacity when the battery voltage reaches a preset voltage threshold;
calculating the ratio of the acquired battery capacity to the initial battery capacity to obtain the health degree of the battery of the charging box;
and calculating to obtain the aging condition of the charging box battery according to the health degree of the charging box battery.
3. The charge control method of claim 1, wherein the charge parameters of the charge cartridge battery include a charge current and a charge-discharge threshold.
4. The charge cassette charge control method according to claim 3, characterized in that said aging condition includes an aging degree;
the step of adjusting the charging parameters of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery specifically comprises:
adjusting the charging current of the charging box battery according to the mapping relation between the aging degree of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the charging and discharging threshold value.
5. The charge cassette charge control method of claim 4, wherein said aging condition further includes an aging speed;
the charging control method of the charging box further comprises the following steps:
acquiring the cycle number of charging and discharging of a battery of the charging box;
and calculating to obtain the aging speed of the charging box battery according to the aging degree of the charging box battery and the cycle number of charging and discharging of the charging box battery.
6. The charging box charging control method according to claim 5, wherein the step of adjusting the charging parameters of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery specifically comprises:
adjusting the charging current of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging condition of the charging box battery and the charging and discharging threshold value.
7. The charging box charging control method according to claim 5, wherein the step of adjusting the charging parameters of the charging box battery according to the mapping relationship between the aging condition of the charging box battery and the battery charging parameters and the aging condition of the charging box battery specifically comprises:
adjusting the charging current of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging current;
and adjusting the charging and discharging threshold value of the charging box battery according to the mapping relation between the aging speed of the charging box battery and the charging and discharging threshold value.
8. The charge cassette charge control method according to any one of claims 1 to 7, wherein before the step of adjusting the charge parameter of the charge cassette battery according to the mapping relationship between the aging speed of the charge cassette battery and the battery charge parameter and the aging condition of the charge cassette battery, the charge cassette charge control method further comprises:
and establishing a mapping relation between the aging condition of the battery of the charging box and the charging parameters of the battery according to the empirical values or the test data.
9. A charging box comprising a battery, a processor, a memory, and a charging box charging control program stored on the memory and executable on the processor, wherein the charging box charging control program when executed by the processor implements the steps of the charging box charging control method of any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that a charging-box charging control program is stored on the computer-readable storage medium, which when executed by a processor implements the steps of the charging-box charging control method according to any one of claims 1 to 8.
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| CN202010884064.8A CN112039155A (en) | 2020-08-27 | 2020-08-27 | Charging control method for charging box, charging box and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115224776A (en) * | 2022-08-19 | 2022-10-21 | 浙江博时新能源技术有限公司 | Intelligent charging control method, intelligent energy storage device and intelligent charging system |
| CN117977747A (en) * | 2023-12-29 | 2024-05-03 | 深圳市锐尔觅移动通信有限公司 | Charging method, device and mobile terminal |
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| US20020039079A1 (en) * | 2000-09-29 | 2002-04-04 | Tokio Shimura | Signal transmitter having voltage booster circuit and method of operating the same |
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| CN115224776A (en) * | 2022-08-19 | 2022-10-21 | 浙江博时新能源技术有限公司 | Intelligent charging control method, intelligent energy storage device and intelligent charging system |
| CN115224776B (en) * | 2022-08-19 | 2023-08-22 | 浙江博时新能源技术有限公司 | Intelligent charging control method, intelligent energy storage device and intelligent charging system |
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