CN117277517B - Intelligent real-time correction method and system for charging parameters of charging chip - Google Patents

Intelligent real-time correction method and system for charging parameters of charging chip Download PDF

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Publication number
CN117277517B
CN117277517B CN202311550511.6A CN202311550511A CN117277517B CN 117277517 B CN117277517 B CN 117277517B CN 202311550511 A CN202311550511 A CN 202311550511A CN 117277517 B CN117277517 B CN 117277517B
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power supply
charging
temperature
electric energy
real
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CN117277517A (en
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赵明
袁楚卓
孙占龙
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Shenzhen Meisi Micro Semiconductor Co ltd
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Shenzhen Meisi Micro Semiconductor Co ltd
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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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • 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
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • 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
    • 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
    • H02J7/007194—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 of the battery
    • 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

Abstract

The invention discloses an intelligent real-time correction method and system for charging parameters of a charging chip, which relate to the technical field of charging and comprise the following steps: establishing a model of the temperature change of the charging chip along with the temperature change of the power supply; acquiring a first preset temperature range of normal operation of the charging chip, and performing temperature compensation on the charging chip; establishing a model of the change of the power supply resistance along with the power supply temperature, and establishing a model of the change of the power supply temperature along with the charging current; calculating the real-time electric energy conversion efficiency of the power supply; taking the charging current when the real-time electric energy conversion efficiency reaches the peak value as a first charging current, and charging by the first charging current; when the real-time electric energy conversion efficiency is smaller than the preset efficiency, calculating to obtain a second charging current; in the charging process, the previous step is repeated continuously, and the real-time electric energy conversion efficiency is ensured to be larger than the preset efficiency. Through setting up model establishment module, conversion efficiency analysis module and adjustment module that charges, and then can guarantee the conversion efficiency of electric energy, the cost of control charging.

Description

Intelligent real-time correction method and system for charging parameters of charging chip
Technical Field
The invention relates to the technical field of charging, in particular to an intelligent real-time correction method and system for charging parameters of a charging chip.
Background
With the continuous development of the rapid charging technology of the terminal device, in order to meet the requirement of rapid charging, the output power of the charging access end of the charger of the intelligent terminal is also larger and larger. When in charging, the resistance is increased due to the increase of the temperature of the power supply, the heating power of the resistance is increased, the charged electric energy is lost and dissipated, and the conversion efficiency of the electric energy is required to be improved.
In the prior art, the adjustment of charging current is lacking, when the power supply resistor is deviated due to temperature, the charger still determines the output current of the charger according to the pre-stored resistance value of the target resistor, and the waste of electric energy can be caused.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provides an intelligent real-time correction method and system for charging parameters of a charging chip, and solves the problems that in the prior art, adjustment of charging current is lacking, when a power supply resistor is deviated due to temperature, a charger still determines the magnitude of current output by the charger according to the pre-stored resistance value of a target resistor, and electric energy is wasted.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an intelligent real-time correction method for charging parameters of a charging chip comprises the following steps:
acquiring initial electric quantity of a device to be charged and acquiring target electric energy of a source to be charged;
according to the existing data, a model of the temperature change of the charging chip along with the temperature change of the power supply is established;
acquiring a first preset temperature range of normal operation of the charging chip, performing temperature compensation on the charging chip, and controlling the temperature of the charging chip to be within the first preset temperature range;
according to the existing data, a model of the power supply resistance changing along with the power supply temperature is built, and a model of the power supply temperature changing along with the charging current is built;
acquiring the temperature of the power supply in real time, acquiring the first electric energy input by the control of the charging chip in real time, acquiring the second electric energy converted into the power supply in real time, subtracting the heating energy of the power supply from the second electric energy, calculating the real-time electric energy conversion efficiency of the power supply, wherein the heating power of the power supply at the time t is equal toWherein I is charging current at time t, and R is power supply resistor at time t;
the charging chip controls the charging current to be gradually increased until the real-time electric energy conversion efficiency reaches a peak value;
the charging chip controls the charging current to be gradually increased until the real-time electric energy conversion efficiency reaches a peak value, and the method comprises the following steps of:
the charging chip controls the charging current to linearly increase to obtain a current function C (T) of the charging current relative to time T, and the charging current at the moment T is；
At 0 to t, heating power of power supplyIntegrating to obtain the heat energy of the first power supply；
According to a third fitting function D (x) in a model of the change of the power supply temperature along with the charging current, obtaining a first power supply temperature at the moment T as；
According to a second fitting function E (x) in a model of the power supply resistance changing along with the power supply temperature, obtaining a first power supply resistance at the moment T as；
According to the first electric energy fitting function A (x), obtaining first electric energy A (t) at the moment t to obtain a first guide function a (t);
acquiring the second electric energy at the time t asObtaining a second derivative function->；
The real-time power conversion efficiency at time t is equal to b (t) divided by a (t);
deriving the t of the real-time electric energy conversion efficiency, calculating the peak value of the real-time electric energy conversion efficiency, and obtaining the corresponding moment of the peak value；
The charging chip controls the charging current to gradually increase to a first charging current, wherein the first charging current is；
Taking the charging current when the real-time electric energy conversion efficiency reaches the peak value as a first charging current, and charging by the first charging current;
when the real-time electric energy conversion efficiency is smaller than the preset efficiency, calculating to obtain a second charging current;
the calculating of the second charging current includes the steps of:
acquiring the moment that the real-time electric energy conversion efficiency is smaller than the preset efficiency as N, and starting from the moment N, charging to the moment M by using a second charging current, wherein the distance between M and N is smaller than the preset distance;
according to a first electric energy fitting function A (x), obtaining first electric energy at the moment M as A (M), obtaining a first guide function a (M), and using a (N) to approximately replace a (M);
the heating energy of the second power supply isThe second electric energy is->Concerning M derivative, a second derivative function is obtained +.>Use +.>Approximate substitution;
obtaining the power supply temperature as a third fitting function D (x) in a model of the power supply temperature changing along with the charging current；
Obtaining the power supply resistance at the moment T as a second fitting function E (x) in a model of the power supply resistance changing along with the power supply temperature；
The real-time electric energy conversion efficiency is equal toDividing the power supply voltage by a (N), and solving to obtain a second charging current which enables the real-time electric energy conversion efficiency to be greater than the preset efficiency;
the charging chip controls the power supply to charge with the second charging current, and the real-time electric energy conversion efficiency is recovered to be greater than the preset efficiency within the preset time;
in the charging process, the previous step is repeated continuously, the real-time electric energy conversion efficiency is ensured to be larger than the preset efficiency, until the electric energy in the power supply reaches the target electric energy, and the charging chip controls the power supply to stop charging;
in the charging process, the charging chip monitors the current passing through the power supply in real time, and when the current passing through the power supply is larger than the early warning current, a charging fault prompt is sent out, and the charging chip controls the power supply to stop charging.
Preferably, the modeling of the change of the temperature of the charging chip with the temperature of the power supply includes the following steps:
acquiring at least one power supply temperature and acquiring a charging chip temperature corresponding to the power supply temperature;
taking the power supply temperature as a horizontal axis, and making images of the temperature of the charging chip and the temperature of the power supply;
and selecting a mathematical model matched with the image to fit the relationship between the temperature of the charging chip and the temperature of the power supply, so as to obtain a first fitting function.
Preferably, the temperature compensation of the charging chip includes the following steps:
acquiring the power supply temperature in real time, substituting the power supply temperature into the first fitting function to obtain the temperature of the charging chip;
judging whether the temperature of the charging chip is within a first preset temperature range, if so, not performing any treatment;
if not, the temperature of the charging chip is adjusted to be within a first preset temperature range.
Preferably, the modeling of the power supply resistance changing with the power supply temperature includes the following steps:
acquiring at least one power supply temperature and acquiring a power supply resistor corresponding to the power supply temperature;
taking the power supply temperature as a horizontal axis, and making an image of the power supply resistance and the power supply temperature;
and selecting a mathematical model matched with the image to fit the relation between the power supply resistance and the power supply temperature, and obtaining a second fitting function.
Preferably, the modeling of the change of the power supply temperature with the charging current includes the following steps:
acquiring at least one charging current and acquiring a power supply temperature corresponding to the charging current;
taking the charging current as a horizontal axis, and making an image of the power supply temperature and the charging current;
and selecting a mathematical model matched with the image to fit the relation between the power supply temperature and the charging current, and obtaining a third fitting function.
Preferably, the calculating the real-time power conversion efficiency of the power supply includes the steps of:
making an image of the first electric energy relative to time, and selecting a mathematical model to fit the image to obtain a first electric energy fitting function A (x);
according to the first electric energy fitting function, calculating to obtain a second electric energy fitting function
；
Deriving a first electric energy fitting function A (x) to obtain a first derivative function a (x);
deriving a second electric energy fitting function B (x) to obtain a second derivative function B (x);
the real-time power conversion efficiency at time t is equal to b (t) divided by a (t).
Preferably, the recovering the real-time power conversion efficiency to be greater than the preset efficiency within the preset time includes the following steps:
the charging chip controls the power supply to charge with a second charging current, and the second charging current is smaller than the first charging current;
the charging current becomes smaller, and the real-time electric energy conversion efficiency is gradually increased to be larger than the preset efficiency.
The intelligent real-time correction system for the charging parameters of the charging chip is used for realizing the intelligent real-time correction method for the charging parameters of the charging chip, and comprises the following steps:
the data acquisition module acquires initial electric quantity of the device to be charged and acquires target electric energy of a source to be charged;
the model building module is used for building a model of the change of the temperature of the charging chip along with the temperature of the power supply, building a model of the change of the power supply resistance along with the temperature of the power supply and building a model of the change of the temperature of the power supply along with the charging current;
the temperature compensation module is used for carrying out temperature compensation on the charging chip and controlling the temperature of the charging chip within a first preset temperature range;
the conversion efficiency analysis module is used for calculating the real-time electric energy conversion efficiency of the power supply;
the charging adjustment module is used for charging with the first charging current, the charging adjustment module is used for calculating a second charging current, and the charging chip is used for controlling the power supply to charge with the second charging current;
and the monitoring module monitors the real-time electric energy conversion efficiency and monitors the current passing through the power supply in real time.
Compared with the prior art, the invention has the beneficial effects that:
through setting up model establishment module, conversion efficiency analysis module and adjustment module that charges, when initial charging, confirm the first charge current that makes real-time electric energy conversion efficiency reach the peak value to can be in the charging process, constantly according to the change of power resistance, calculate again and obtain the second charge current, make real-time electric energy conversion efficiency be greater than preset efficiency, and then can effectively control because the loss of electric energy that power resistance generates heat and lead to, keep real-time electric energy conversion efficiency at suitable scope all the time, and then can guarantee the conversion efficiency of electric energy, the cost of control charging.
Drawings
FIG. 1 is a flow chart of an intelligent real-time correction method for charging parameters of a charging chip;
FIG. 2 is a schematic diagram of a flow chart for establishing a model of the temperature change of a charging chip along with the temperature change of a power supply according to the invention;
FIG. 3 is a schematic diagram of a temperature compensation process for a charging chip according to the present invention;
FIG. 4 is a schematic diagram of a flow chart of modeling the power supply resistance as a function of the power supply temperature according to the present invention;
FIG. 5 is a schematic diagram of a flow chart of modeling the change of the power supply temperature with the charging current according to the present invention;
FIG. 6 is a flow chart of the real-time power conversion efficiency of the computing power supply according to the present invention;
FIG. 7 is a schematic diagram illustrating a flow of the charging chip of the present invention to control the charging current to increase gradually until the real-time power conversion efficiency reaches a peak value;
fig. 8 is a schematic diagram of a second charging current flow calculated according to the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Referring to fig. 1, an intelligent real-time correction method for charging parameters of a charging chip includes:
acquiring initial electric quantity of a device to be charged and acquiring target electric energy of a source to be charged;
according to the existing data, a model of the temperature change of the charging chip along with the temperature change of the power supply is established;
acquiring a first preset temperature range of normal operation of the charging chip, performing temperature compensation on the charging chip, and controlling the temperature of the charging chip to be within the first preset temperature range;
according to the existing data, a model of the power supply resistance changing along with the power supply temperature is built, and a model of the power supply temperature changing along with the charging current is built;
acquiring the temperature of the power supply in real time, acquiring the first electric energy input by the control of the charging chip in real time, acquiring the second electric energy converted into the power supply in real time, subtracting the heating energy of the power supply from the second electric energy, calculating the real-time electric energy conversion efficiency of the power supply, wherein the heating power of the power supply at the time t is equal toWherein I is charging current at time t, and R is power supply resistor at time t;
the charging chip controls the charging current to be gradually increased until the real-time electric energy conversion efficiency reaches a peak value, and the charging current when the real-time electric energy conversion efficiency reaches the peak value is used as a first charging current, and the first charging current is used for charging;
when the real-time electric energy conversion efficiency is smaller than the preset efficiency, calculating a second charging current, and controlling the power supply to charge by the charging chip through the second charging current, wherein the real-time electric energy conversion efficiency is recovered to be larger than the preset efficiency within the preset time;
in the charging process, the previous step is repeated continuously, the real-time electric energy conversion efficiency is ensured to be larger than the preset efficiency, until the electric energy in the power supply reaches the target electric energy, and the charging chip controls the power supply to stop charging;
in the charging process, the charging chip monitors the current passing through the power supply in real time, and when the current passing through the power supply is larger than the early warning current, a charging fault prompt is sent out, and the charging chip controls the power supply to stop charging.
Referring to fig. 2, the modeling of the temperature of the charging chip as a function of the temperature of the power supply includes the steps of:
acquiring at least one power supply temperature and acquiring a charging chip temperature corresponding to the power supply temperature;
taking the power supply temperature as a horizontal axis, and making images of the temperature of the charging chip and the temperature of the power supply;
and selecting a mathematical model matched with the image to fit the relationship between the temperature of the charging chip and the temperature of the power supply, so as to obtain a first fitting function.
Referring to fig. 3, the temperature compensation of the charging chip includes the steps of:
acquiring the power supply temperature in real time, substituting the power supply temperature into the first fitting function to obtain the temperature of the charging chip;
judging whether the temperature of the charging chip is within a first preset temperature range, if so, not performing any treatment;
if not, the temperature of the charging chip is adjusted to be within a first preset temperature range;
the temperature compensation is carried out on the charging chip to ensure that the charging chip can always be in a normal working state, otherwise, the accuracy of the control current of the charging chip is reduced, and the charging effect is influenced.
Referring to fig. 4, modeling the power supply resistance as a function of the power supply temperature includes the steps of:
acquiring at least one power supply temperature and acquiring a power supply resistor corresponding to the power supply temperature;
taking the power supply temperature as a horizontal axis, and making an image of the power supply resistance and the power supply temperature;
selecting a mathematical model matched with the image to fit the relation between the power supply resistance and the power supply temperature to obtain a second fitting function;
the model of the power supply resistance changing along with the power supply temperature is established so that the power supply temperature can be used for representing the power supply resistance when the real-time power conversion efficiency is calculated.
Referring to fig. 5, modeling the change of the power supply temperature with the charging current includes the steps of:
acquiring at least one charging current and acquiring a power supply temperature corresponding to the charging current;
taking the charging current as a horizontal axis, and making an image of the power supply temperature and the charging current;
selecting a mathematical model matched with the image to fit the relation between the power supply temperature and the charging current to obtain a third fitting function;
the model of the change of the power supply temperature along with the charging current is established so that the charging current can be used for representing the power supply temperature when the real-time electric energy conversion efficiency is calculated.
Referring to fig. 6, calculating the real-time power conversion efficiency of the power supply includes the steps of:
making an image of the first electric energy relative to time, and selecting a mathematical model to fit the image to obtain a first electric energy fitting function A (x);
according to the first electric energy fitting function, calculating a second electric energy fitting function B (x);
deriving a first electric energy fitting function A (x) to obtain a first derivative function a (x);
deriving a second electric energy fitting function B (x) to obtain a second derivative function B (x);
the real-time power conversion efficiency at time t is equal to b (t) divided by a (t);
the calculation principle is t to t according to the limit thoughtThe first electric energy at the moment is->The second electric energy is->The real-time power conversion efficiency at time t is equal to +.>The molecular denominator is simultaneously divided by +.>The real-time electric energy conversion efficiency is equal to->And obtaining the real-time electric energy conversion efficiency at the time t to be equal to b (t) divided by a (t) according to the definition of the derivative.
Referring to fig. 7, the charging chip controls the charging current to increase gradually until the real-time power conversion efficiency reaches the peak value, including the steps of:
the charging chip controls the charging current to linearly increase to obtain a current function C (T) of the charging current relative to time T, and the charging current at the moment T is；
Integrating the heating power of the power supply at 0 to t to obtain the heating energy of the first power supply；
According to a third fitting function D (x) in a model of the change of the power supply temperature along with the charging current, obtaining a first power supply temperature at the moment T as；
According to a second fitting function E (x) in a model of the power supply resistance changing along with the power supply temperature, obtaining a first power supply resistance at the moment T as；
According to the first electric energy fitting function A (x), obtaining first electric energy A (t) at the moment t to obtain a first guide function a (t);
acquiring the second electric energy at the time t asObtaining a second derivative function->；
The real-time power conversion efficiency at time t is equal to b (t) divided by a (t);
deriving the t of the real-time electric energy conversion efficiency, calculating the peak value of the real-time electric energy conversion efficiency, and obtaining the corresponding moment of the peak value；
The charging chip controls the charging current to gradually increase to a first charging current, wherein the first charging current is；
The analysis principle is that the real-time electric energy conversion efficiency is changed into a function related to time t through a model of the power supply resistance changing along with the power supply temperature and a model of the power supply temperature changing along with the charging current, and the moment corresponding to the peak value can be obtained by using a method of obtaining the extremum in the calculusAnd thereby determining a first charging current.
Referring to fig. 8, calculating the second charging current includes the steps of:
acquiring the moment that the real-time electric energy conversion efficiency is smaller than the preset efficiency as N, and starting from the moment N, charging to the moment M by using a second charging current, wherein the distance between M and N is smaller than the preset distance;
according to the first electric energy fitting function A (x), obtaining first electric energy at the moment M as A (M), obtaining a first guide function a (M), and using a (N) to approximately replace a (M), wherein N is a monitored known value, M is a value presupposed for solving a second charging current, the distance between M and N is smaller than a preset distance, the preset distance is a number approaching 0, the specific value of the preset distance is selected according to the charging current control precision, and therefore a (N) can approximately replace a (M);
the heating energy of the second power supply isThe second electric energy is->Concerning M derivative, a second derivative function is obtained +.>Use +.>Approximate substitution;
obtaining the power supply temperature as a third fitting function D (x) in a model of the power supply temperature changing along with the charging current；
Obtaining the power supply resistance at the moment T as a second fitting function E (x) in a model of the power supply resistance changing along with the power supply temperature；
The real-time electric energy conversion efficiency is equal toDividing the power supply voltage by a (N), and solving to obtain a second charging current which enables the real-time electric energy conversion efficiency to be greater than the preset efficiency;
the principle is that the real-time electric energy conversion efficiency is converted into a function of I, then inequality about the I can be listed, the value range of the I is calculated, and the second charging current is selected in the value range of the I.
The recovery of the real-time power conversion efficiency to be greater than the preset efficiency within the preset time includes the steps of:
the charging chip controls the power supply to charge with a second charging current, and the second charging current is smaller than the first charging current;
the charging current becomes smaller, and the real-time electric energy conversion efficiency is gradually increased to be larger than the preset efficiency.
The intelligent real-time correction system for the charging parameters of the charging chip is used for realizing the intelligent real-time correction method for the charging parameters of the charging chip, and comprises the following steps:
the data acquisition module acquires initial electric quantity of the device to be charged and acquires target electric energy of a source to be charged;
the model building module is used for building a model of the change of the temperature of the charging chip along with the temperature of the power supply, building a model of the change of the power supply resistance along with the temperature of the power supply and building a model of the change of the temperature of the power supply along with the charging current;
the temperature compensation module is used for carrying out temperature compensation on the charging chip and controlling the temperature of the charging chip within a first preset temperature range;
the conversion efficiency analysis module is used for calculating the real-time electric energy conversion efficiency of the power supply;
the charging adjustment module is used for charging with the first charging current, the charging adjustment module is used for calculating a second charging current, and the charging chip is used for controlling the power supply to charge with the second charging current;
and the monitoring module monitors the real-time electric energy conversion efficiency and monitors the current passing through the power supply in real time.
The working process of the intelligent real-time correction system for the charging parameters of the charging chip is as follows:
step one: the data acquisition module acquires initial electric quantity of the device to be charged and acquires target electric energy of a source to be charged;
step two: the model building module builds a model of the temperature change of the charging chip along with the temperature change of the power supply according to the existing data;
step three: the temperature compensation module acquires a first preset temperature range of normal operation of the charging chip, performs temperature compensation on the charging chip, and controls the temperature of the charging chip to be within the first preset temperature range;
step four: the model building module builds a model of the power supply resistance changing along with the power supply temperature according to the existing data, and builds a model of the power supply temperature changing along with the charging current;
step five: the conversion efficiency analysis module acquires the temperature of the power supply in real time, acquires the first electric energy input by the control of the charging chip in real time, acquires the second electric energy converted into the power supply in real time, and calculates the real-time electric energy conversion efficiency of the power supply by subtracting the heating energy of the power supply from the first electric energy;
step six: the charging adjustment module controls the charging current to be gradually increased until the real-time electric energy conversion efficiency reaches a peak value, and the charging current when the real-time electric energy conversion efficiency reaches the peak value is used as a first charging current, and the first charging current is used for charging;
step seven: the monitoring module monitors the real-time electric energy conversion efficiency, when the real-time electric energy conversion efficiency is smaller than the preset efficiency, the charging adjustment module calculates a second charging current, the charging adjustment module controls the power supply to charge with the second charging current, and the real-time electric energy conversion efficiency is restored to be larger than the preset efficiency within the preset time;
step eight: in the charging process, the charging adjustment module continuously repeats the previous step, so that the real-time electric energy conversion efficiency is ensured to be larger than the preset efficiency until the electric energy in the power supply reaches the target electric energy, and the charging adjustment module controls the power supply to stop charging;
step nine: in the charging process, the monitoring module monitors the current passing through the power supply in real time, and when the current passing through the power supply is larger than the early warning current, a charging fault prompt is sent out, and the monitoring module controls the power supply to stop charging.
Still further, the present solution also proposes a storage medium, on which a computer readable program is stored, and when the computer readable program is called, the above-mentioned intelligent real-time correction method for the charging parameters of the charging chip is executed.
It is understood that the storage medium may be a magnetic medium, e.g., floppy disk, hard disk, magnetic tape; optical media such as DVD; or a semiconductor medium such as a solid state disk SolidStateDisk, SSD, etc.
In summary, the invention has the advantages that: through setting up model establishment module, conversion efficiency analysis module and adjustment module that charges, when initial charging, confirm the first charge current that makes real-time electric energy conversion efficiency reach the peak value to can be in the charging process, constantly according to the change of power resistance, calculate again and obtain the second charge current, make real-time electric energy conversion efficiency be greater than preset efficiency, and then can effectively control because the loss of electric energy that power resistance generates heat and lead to, keep real-time electric energy conversion efficiency at suitable scope all the time, and then can guarantee the conversion efficiency of electric energy, the cost of control charging.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The intelligent real-time correction method for the charging parameters of the charging chip is characterized by comprising the following steps of:
acquiring initial electric quantity of a device to be charged and acquiring target electric energy of a source to be charged;
according to the existing data, a model of the temperature change of the charging chip along with the temperature change of the power supply is established;
acquiring a first preset temperature range of normal operation of the charging chip, performing temperature compensation on the charging chip, and controlling the temperature of the charging chip to be within the first preset temperature range;
according to the existing data, a model of the power supply resistance changing along with the power supply temperature is built, and a model of the power supply temperature changing along with the charging current is built;
acquiring the temperature of the power supply in real time, acquiring the first electric energy input by the control of the charging chip in real time, acquiring the second electric energy converted into the power supply in real time, subtracting the heating energy of the power supply from the second electric energy, calculating the real-time electric energy conversion efficiency of the power supply, wherein the heating power of the power supply at the time t is equal toWherein I is charging current at time t, and R is power supply resistor at time t;
the charging chip controls the charging current to be gradually increased until the real-time electric energy conversion efficiency reaches a peak value;
the charging chip controls the charging current to be gradually increased until the real-time electric energy conversion efficiency reaches a peak value, and the method comprises the following steps of:
the charging chip controls the charging current to linearly increase to obtain a current function C (T) of the charging current relative to time T, and the charging current at the moment T is；
Integrating the heating power of the power supply at 0 to t to obtain the heating energy of the first power supply；
According to a third fitting function D (x) in a model of the change of the power supply temperature along with the charging current, obtaining a first power supply temperature at the moment T as；
According to a second fitting function E (x) in a model of the power supply resistance changing along with the power supply temperature, obtaining a first power supply resistance at the moment T as；
According to the first electric energy fitting function A (x), obtaining first electric energy A (t) at the moment t to obtain a first guide function a (t);
acquiring the second electric energy at the time t asObtaining a second derivative function；
The real-time power conversion efficiency at time t is equal to b (t) divided by a (t);
deriving the t of the real-time electric energy conversion efficiency, calculating the peak value of the real-time electric energy conversion efficiency, and obtaining the corresponding moment of the peak value；
The charging chip controls the charging current to gradually increase to a first charging current, wherein the first charging current is；
Taking the charging current when the real-time electric energy conversion efficiency reaches the peak value as a first charging current, and charging by the first charging current;
when the real-time electric energy conversion efficiency is smaller than the preset efficiency, calculating to obtain a second charging current;
the calculating of the second charging current includes the steps of:
acquiring the moment that the real-time electric energy conversion efficiency is smaller than the preset efficiency as N, and starting from the moment N, charging to the moment M by using a second charging current, wherein the distance between M and N is smaller than the preset distance;
according to a first electric energy fitting function A (x), obtaining first electric energy at the moment M as A (M), obtaining a first guide function a (M), and using a (N) to approximately replace a (M);
the heating energy of the second power supply isThe second electric energy is->Concerning M derivative, a second derivative function is obtained +.>Use +.>Approximate substitution;
obtaining the power supply temperature as a third fitting function D (x) in a model of the power supply temperature changing along with the charging current；
Obtaining the power supply resistance at the moment T as a second fitting function E (x) in a model of the power supply resistance changing along with the power supply temperature；
The real-time electric energy conversion efficiency is equal toDividing the power supply voltage by a (N), and solving to obtain a second charging current which enables the real-time electric energy conversion efficiency to be greater than the preset efficiency;
the charging chip controls the power supply to charge with the second charging current, and the real-time electric energy conversion efficiency is recovered to be greater than the preset efficiency within the preset time;
in the charging process, the previous step is repeated continuously, the real-time electric energy conversion efficiency is ensured to be larger than the preset efficiency, until the electric energy in the power supply reaches the target electric energy, and the charging chip controls the power supply to stop charging;
in the charging process, the charging chip monitors the current passing through the power supply in real time, and when the current passing through the power supply is larger than the early warning current, a charging fault prompt is sent out, and the charging chip controls the power supply to stop charging.
2. The method for intelligently correcting the charging parameters of the charging chip in real time according to claim 1, wherein the step of establishing a model of the temperature of the charging chip along with the temperature change of the power supply comprises the following steps:
acquiring at least one power supply temperature and acquiring a charging chip temperature corresponding to the power supply temperature;
taking the power supply temperature as a horizontal axis, and making images of the temperature of the charging chip and the temperature of the power supply;
and selecting a mathematical model matched with the image to fit the relationship between the temperature of the charging chip and the temperature of the power supply, so as to obtain a first fitting function.
3. The method for intelligent real-time correction of charging parameters of a charging chip according to claim 2, wherein the temperature compensation of the charging chip comprises the following steps:
acquiring the power supply temperature in real time, substituting the power supply temperature into the first fitting function to obtain the temperature of the charging chip;
judging whether the temperature of the charging chip is within a first preset temperature range, if so, not performing any treatment;
if not, the temperature of the charging chip is adjusted to be within a first preset temperature range.
4. The method for intelligently correcting the charging parameters of the charging chip in real time according to claim 3, wherein the modeling of the power supply resistance changing along with the power supply temperature comprises the following steps:
acquiring at least one power supply temperature and acquiring a power supply resistor corresponding to the power supply temperature;
taking the power supply temperature as a horizontal axis, and making an image of the power supply resistance and the power supply temperature;
and selecting a mathematical model matched with the image to fit the relation between the power supply resistance and the power supply temperature, and obtaining a second fitting function.
5. The method for intelligent real-time correction of charging parameters of a charging chip according to claim 4, wherein the modeling of the change of the power supply temperature with the charging current comprises the following steps:
acquiring at least one charging current and acquiring a power supply temperature corresponding to the charging current;
taking the charging current as a horizontal axis, and making an image of the power supply temperature and the charging current;
and selecting a mathematical model matched with the image to fit the relation between the power supply temperature and the charging current, and obtaining a third fitting function.
6. The method for intelligent real-time correction of charging parameters of a charging chip according to claim 5, wherein the calculating of the real-time power conversion efficiency of the power supply comprises the steps of:
making an image of the first electric energy relative to time, and selecting a mathematical model to fit the image to obtain a first electric energy fitting function A (x);
according to the first electric energy fitting function, calculating to obtain a second electric energy fitting function
；
Deriving a first electric energy fitting function A (x) to obtain a first derivative function a (x);
deriving a second electric energy fitting function B (x) to obtain a second derivative function B (x);
the real-time power conversion efficiency at time t is equal to b (t) divided by a (t).
7. The method for intelligently correcting the charging parameters of the charging chip in real time according to claim 6, wherein the step of recovering the real-time power conversion efficiency to be greater than the preset efficiency within the preset time comprises the following steps:
the charging chip controls the power supply to charge with a second charging current, and the second charging current is smaller than the first charging current;
the charging current becomes smaller, and the real-time electric energy conversion efficiency is gradually increased to be larger than the preset efficiency.
8. An intelligent real-time correction system for charging parameters of a charging chip, for implementing the intelligent real-time correction method for charging parameters of the charging chip according to any one of claims 1 to 7, comprising:
the data acquisition module acquires initial electric quantity of the device to be charged and acquires target electric energy of a source to be charged;
the model building module is used for building a model of the change of the temperature of the charging chip along with the temperature of the power supply, building a model of the change of the power supply resistance along with the temperature of the power supply and building a model of the change of the temperature of the power supply along with the charging current;
the temperature compensation module is used for carrying out temperature compensation on the charging chip and controlling the temperature of the charging chip within a first preset temperature range;
the conversion efficiency analysis module is used for calculating the real-time electric energy conversion efficiency of the power supply;
the charging adjustment module is used for charging with the first charging current, the charging adjustment module is used for calculating a second charging current, and the charging chip is used for controlling the power supply to charge with the second charging current;
and the monitoring module monitors the real-time electric energy conversion efficiency and monitors the current passing through the power supply in real time.
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