CN113364088B - A battery charging method and device - Google Patents
A battery charging method and device Download PDFInfo
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- CN113364088B CN113364088B CN202110616803.XA CN202110616803A CN113364088B CN 113364088 B CN113364088 B CN 113364088B CN 202110616803 A CN202110616803 A CN 202110616803A CN 113364088 B CN113364088 B CN 113364088B
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- 238000007600 charging Methods 0.000 title claims abstract description 375
- 238000000034 method Methods 0.000 title claims abstract description 187
- 230000008569 process Effects 0.000 claims abstract description 149
- 238000010280 constant potential charging Methods 0.000 claims abstract description 100
- 238000010277 constant-current charging Methods 0.000 claims abstract description 48
- 238000004590 computer program Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 9
- 238000004088 simulation Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 17
- 229910052744 lithium Inorganic materials 0.000 description 17
- 238000010586 diagram Methods 0.000 description 12
- 230000002829 reductive effect Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
- H02J7/00716—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 in response to integrated charge or discharge current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses a method and a device for charging a battery, wherein the method comprises the steps of detecting the voltage of a charging chip, when the voltage of the charging chip is a first set voltage, carrying out constant voltage charging on the battery to be charged by the first set voltage, wherein the first set voltage is larger than the charge cut-off voltage of the battery to be charged, and when the constant voltage charging is carried out, the charging current of the battery to be charged is smaller than or equal to the first set current, and the charging of the battery to be charged is stopped. Because the first set voltage is larger than the charge cut-off voltage, the voltage loss caused by the load element can be compensated, and the charge voltage at two ends of the battery to be charged can reach the charge cut-off voltage, so that the time point of charging the battery to be charged into the constant voltage charging process is relatively late, the constant voltage charging process can not be advanced, the charging time of the constant current charging process is relatively longer, the time of the constant voltage charging process is relatively shorter, and the whole charging time of the battery to be charged can be shortened.
Description
Technical Field
The present application relates to the field of terminal technologies, and in particular, to a method and an apparatus for charging a battery.
Background
With the rapid development of electronic technology, various forms of electronic devices are increasing, and most of the electronic devices are equipped with batteries, such as dry batteries, lithium batteries, etc., for longer-term use. Based on this, in order to ensure that the electronic device can be used normally, it is necessary to charge the battery of the electronic device when it is detected that the battery of the electronic device is below a certain value.
At this stage, three stages, i.e., a precharge stage, a constant current stage, and a constant voltage stage, are generally required to be performed when charging a battery of an electronic device. Taking a lithium battery equipped with an electronic device as an example, for example, the voltage range of the lithium battery is between 3V and 4.2V, when the voltage of the lithium battery equipped with the electronic device is detected to be lower than 3V, the lithium battery needs to be pre-charged first, and when the voltage of the lithium battery is detected to reach 3V, the constant current stage is entered, that is, the lithium battery is charged with a set current (for example, 1A) in a constant current manner. And then, when the voltage of the lithium battery is detected to reach 4.2V, the constant voltage stage is carried out, namely, the constant voltage charging is carried out on the lithium battery at 4.2V, at this time, the current for charging the lithium battery gradually decreases until the current drops to the charging cut-off current set by the lithium battery, and the charging of the lithium battery is stopped. However, this charging mode may enter a constant voltage phase in advance when charging the battery, so that the constant current phase charging time is short and the constant voltage phase charging time is long, resulting in an extension of the entire charging time.
In view of the foregoing, there is a need for a method for charging a battery to shorten the charging time of the battery to be charged.
Disclosure of Invention
The application provides a method and a device for charging a battery, which are used for shortening the charging time of the battery to be charged.
In order to achieve the above purpose, the present application provides the following technical solutions:
In a first aspect, the present application provides a method of charging a battery, comprising:
detecting the voltage of the charging chip;
When the voltage of the charging chip is a first set voltage, carrying out constant voltage charging on the battery to be charged by using the first set voltage; the first set voltage is larger than the charge cut-off voltage of the battery to be charged;
when the constant voltage charging is carried out, the charging current of the battery to be charged is smaller than or equal to a first set current, and the charging of the battery to be charged is stopped; the first set current is larger than the charge cut-off current of the battery to be charged.
In the above technical solution, since the prior art solution is to convert from the constant current charging process to the constant voltage charging process when detecting that the voltage of the charging chip reaches the charge cut-off voltage of the battery to be charged, and because of the influence of the load element, the charging voltage at both ends of the battery to be charged does not actually reach the charge cut-off voltage, but the charging of the battery to be charged enters the constant voltage charging process in advance, so that the charging time of the constant current charging process is short, the time of the constant voltage charging process is long, and the whole charging time of the battery to be charged is further increased. Based on the above, the technical scheme of the application is that the constant-current charging process is converted into the constant-voltage charging process when the voltage of the charging chip reaches the first set voltage. Therefore, the scheme can compensate the voltage loss caused by the load element because the first set voltage is larger than the charge cut-off voltage, and can enable the charge voltage at two ends of the battery to reach the charge cut-off voltage, so that the time point of charging the battery to be charged into the constant voltage charging process is relatively late, the constant voltage charging process can not be advanced, the charging time of the constant current charging process is relatively longer, the time of the constant voltage charging process is relatively shorter, and the whole charging time of the battery to be charged is shortened, so that the purpose of shortening the charging time of the battery to be charged can be achieved. In addition, when the charging current of the battery to be charged is smaller than or equal to the first set current, the battery to be charged is stopped from being charged, and the condition that the battery to be charged is overcharged can be avoided, so that the service life of the battery to be charged is ensured.
In one possible implementation, the method further includes:
And determining the first set voltage according to the charge cut-off voltage, the first set current and the resistance of the load element.
In the above technical solution, since the voltage across the battery to be charged cannot actually reach the charge cutoff voltage due to the influence of the load element in the prior art solution, the required charging time is longer, that is, the time consumed in the constant current charging process is shorter, and the time consumed in the constant voltage charging process is longer. In this way, in order to compensate the voltage consumption generated by the load element and ensure that the voltage at two ends of the battery to be charged can reach the charge cut-off voltage, the scheme determines the first set voltage based on the load element, the charge cut-off voltage and the first set current, so that the requirement that the voltage at two ends of the battery to be charged reaches the charge cut-off voltage can be met.
In one possible implementation manner, the load element comprises a wiring between a charging chip and a battery to be charged, an anti-electrification buckling switch, a connector of the battery to be charged, a flexible circuit board and a protection board;
The method further comprises the steps of:
acquiring the resistance of the wiring through electronic automatic simulation; acquiring the resistance of the anti-electrification buckling switch through performance parameter information of the anti-electrification buckling switch; acquiring the resistance of the connector through the performance parameter information of the connector of the battery to be charged; acquiring the resistance of the flexible circuit board and the resistance of the protection board through the performance parameter information of the battery to be charged;
and determining the resistance of the load element according to the resistance of the wiring, the resistance of the anti-electrification buckling switch, the resistance of the connector, the resistance of the flexible circuit board and the resistance of the protection board.
According to the technical scheme, according to the composition of the load element related in the charging process of the battery to be charged, the resistance of the load element can be timely and accurately obtained from the parameter information of the related load element, so that support is provided for determining the first set voltage.
In one possible implementation manner, before the detecting the voltage of the charging chip, the method further includes:
When the charging chip is detected to be in a power-on starting state, the micro control unit MCU configures a charging cut-off voltage parameter of the charging chip in a constant voltage charging process to be a first set voltage, and configures a charging cut-off current parameter of the charging chip in the constant voltage charging process to be a first set current.
According to the technical scheme, when the charging chip is electrified and started, the MCU can accurately and automatically configure the charge cut-off voltage parameter of the charging chip in the constant-voltage charging process to be the first set voltage, and configure the charge cut-off current parameter of the charging chip in the constant-voltage charging process to be the first set current, so that when the voltage of the charging chip is detected to reach the first set voltage, the charging process of the battery to be charged can be timely converted from the constant-current charging process to the constant-voltage charging process.
In one possible implementation manner, before the detecting the voltage of the charging chip, the method further includes:
When the charging chip is detected to be in a power-on starting state, the MCU configures a charging cut-off voltage parameter of the charging chip in a constant-current charging process to be a second set voltage, and configures a charging cut-off current parameter of the charging chip in the constant-current charging process to be a second set current; the second set voltage is smaller than the first set voltage; the second set current is larger than the first set current;
and when the voltage of the charging chip is the second set voltage, constant-current charging is carried out on the battery to be charged by the second set current.
According to the technical scheme, when the charging chip is electrified and started, the charging cut-off voltage parameter of the charging chip in the constant-current charging process can be accurately and automatically configured to be the second set voltage through the MCU, and the charging cut-off current parameter of the charging chip in the constant-current charging process is configured to be the second set current, so that when the voltage of the charging chip is detected to reach the second set voltage, the charging process of the battery to be charged can be timely converted from the trickle charging process (namely the pre-charging process) to the constant-current charging process.
In one possible implementation, the method further includes:
And determining the first set current according to the charge cut-off current and the second set current.
In the above technical solution, if the technical solution in the present application only configures the charge cutoff voltage parameter of the charging chip in the constant voltage charging process to the first set voltage, but does not configure the charge cutoff current parameter of the charging chip in the constant voltage charging process to the first set current, since the first set voltage is greater than the charge cutoff voltage of the battery to be charged, the charging current of the battery to be charged is reduced to the charge cutoff current, the charging chip controls the power supply to stop charging the battery to be charged, so that the condition of overcharging occurs in the battery to be charged, and therefore, when the charge cutoff voltage parameter in the constant voltage charging process is configured to the first set voltage, the charge cutoff current parameter in the constant voltage charging process is also configured to the first set current, so as to ensure that the compensation for the voltages at both ends of the battery to be charged can meet the requirement of obviously optimizing the charging time. In addition, if the current required for determining the first set voltage takes only a current equal to or less than the charge cutoff current, this results in that the compensation for the voltage across the battery to be charged is too small to be obvious for the charge time optimization of the battery to be charged, and therefore, when the current required for determining the first set voltage takes only a certain current greater than the charge cutoff current. Meanwhile, if the charging cut-off current parameter of the charging chip in the constant voltage charging process is not configured to be the first set current, charging is stopped when the charging current of the battery to be charged in the constant voltage charging process reaches the charging cut-off current, so that the voltage at two ends of the battery to be charged is larger than the charging cut-off voltage, the battery to be charged is overcharged, and the service life of the battery to be charged is influenced. Therefore, the technical scheme of the application configures the charge cut-off current parameter of the charging chip in the constant voltage charging process to be the first set current, namely, the first set current is determined according to the charge cut-off current and the second set current, so as to ensure that the compensation of the voltage at two ends of the battery to be charged can meet the requirement of obviously optimizing the charging time, and the condition of overcharging of the battery to be charged can be avoided, thereby ensuring the service life of the battery to be charged.
In one possible implementation manner, when the constant voltage charging is performed, the charging current of the battery to be charged is less than or equal to a first set current, and the charging of the battery to be charged is stopped, including:
If the working state of the MCU is determined to be a normal state, when the charging current of the battery to be charged in the constant voltage charging process is detected to be a third set current, the charging cut-off current parameter configured by the charging chip is adjusted from the first set current to the charging cut-off current through the MCU, the charging cut-off voltage parameter configured by the charging chip is adjusted from the first set voltage to the third set voltage, and when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the charging cut-off current, the charging of the battery to be charged is stopped; the third set current is greater than the first set current; the third set voltage is determined based on a charge cutoff voltage, the charge cutoff current, and a resistance of a load element;
And if the working state of the MCU is determined to be an abnormal state, stopping charging the battery to be charged when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the first set current.
In the above technical solution, in order to prevent the situation that the MCU malfunctions (such as downtime) and causes overcharge of the battery to be charged, and in order to ensure that the electric quantity of the battery to be charged can be fully charged, the technical solution in the present application sets a function for the MCU, that is, when the operating state of the MCU is in a normal state, when detecting that the charging current of the battery to be charged in the constant voltage charging process is reduced to be close to the first set current (that is, the current close to the first set current is the third set current), the MCU actively adjusts the charging cut-off current parameter configured by the charging chip from the first set current to the charging cut-off current, and adjusts the charging cut-off voltage parameter configured by the charging chip from the first set voltage to the third set voltage, so as to ensure that the voltage at two ends of the battery to be charged is always kept at the charging cut-off voltage, and stops charging when the charging current passing through the battery to be charged is the charging cut-off current, thereby realizing that the electric quantity of the battery to be charged is fully charged. In addition, if the MCU fails and cannot work normally, the MCU cannot adjust the charge cut-off voltage parameter and the charge cut-off current parameter configured by the charging chip, and the charging of the battery to be charged in the constant voltage charging process is stopped when the charging current reaches the first set current, so that the condition that the voltage at two ends of the battery to be charged is larger than the charge cut-off voltage can be avoided, the condition that the battery to be charged is overcharged is avoided, the condition that the performance of the battery to be charged is reduced is avoided, and the service life of the battery to be charged is ensured.
In a second aspect, the present application also provides a device for charging a battery, including:
the detection module is used for detecting the voltage of the charging chip;
the processing module is used for carrying out constant voltage charging on the battery to be charged by the first set voltage when the voltage of the charging chip is the first set voltage; the first set voltage is larger than the charge cut-off voltage of the battery to be charged; when the constant voltage charging is carried out, the charging current of the battery to be charged is smaller than or equal to a first set current, and the charging of the battery to be charged is stopped; the first set current is larger than the charge cut-off current of the battery to be charged.
In one possible implementation manner, the processing module is specifically configured to:
determining the first set voltage according to the charge cut-off voltage, the first set current and the resistance of the load element
In one possible implementation manner, the load element comprises a wiring between a charging chip and a battery to be charged, an anti-electrification buckling switch, a connector of the battery to be charged, a flexible circuit board and a protection board;
The processing module is specifically configured to:
acquiring the resistance of the wiring through electronic automatic simulation; acquiring the resistance of the anti-electrification buckling switch through performance parameter information of the anti-electrification buckling switch; acquiring the resistance of the connector through the performance parameter information of the connector of the battery to be charged; acquiring the resistance of the flexible circuit board and the resistance of the protection board through the performance parameter information of the battery to be charged;
and determining the resistance of the load element according to the resistance of the wiring, the resistance of the anti-electrification buckling switch, the resistance of the connector, the resistance of the flexible circuit board and the resistance of the protection board.
In one possible implementation, the processing module is further configured to:
Before the voltage of the charging chip is detected, when the charging chip is detected to be in a power-on starting state, the charging cut-off voltage parameter of the charging chip in the constant voltage charging process is configured to be a first set voltage, and the charging cut-off current parameter of the charging chip in the constant voltage charging process is configured to be a first set current through the micro control unit MCU.
In one possible implementation, the processing module is further configured to:
Before detecting the voltage of a charging chip, configuring a charging cut-off voltage parameter of the charging chip in a constant current charging process to be a second set voltage and configuring a charging cut-off current parameter of the charging chip in the constant current charging process to be a second set current through an MCU (micro control unit) when the charging chip is detected to be in a power-on starting state; the second set voltage is smaller than the first set voltage; the second set current is larger than the first set current;
and when the voltage of the charging chip is the second set voltage, constant-current charging is carried out on the battery to be charged by the second set current.
In one possible implementation manner, the processing module is specifically configured to:
And determining the first set current according to the charge cut-off current and the second set current.
In one possible implementation manner, the processing module is specifically configured to:
If the working state of the MCU is determined to be a normal state, when the charging current of the battery to be charged in the constant voltage charging process is detected to be a third set current, the charging cut-off current parameter configured by the charging chip is adjusted from the first set current to the charging cut-off current through the MCU, the charging cut-off voltage parameter configured by the charging chip is adjusted from the first set voltage to the third set voltage, and when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the charging cut-off current, the charging of the battery to be charged is stopped; the third set current is greater than the first set current; the third set voltage is determined based on a charge cutoff voltage, the charge cutoff current, and a resistance of a load element;
And if the working state of the MCU is determined to be an abnormal state, stopping charging the battery to be charged when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the first set current.
In a third aspect, an embodiment of the present application provides a computing device, including at least one processor and at least one memory, where the memory stores a computer program that, when executed by the processor, causes the processor to perform the method of charging a battery as described in any of the first aspects above.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program executable by a computing device, the program when run on the computing device causing the computing device to perform the method of battery charging of any of the first aspects described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a battery charging system architecture according to an embodiment of the present application;
Fig. 2 is a flowchart of a method for charging a battery according to an embodiment of the present application;
fig. 3 is a schematic diagram of a structure for charging a battery to be charged according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a battery charging device according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of a computing device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
To facilitate understanding of the embodiments of the present application, a system architecture suitable for use in the embodiments of the present application will first be described with reference to the system architecture shown in fig. 1. The battery charging system architecture can be applied to charging a battery to be charged and the like. As shown in fig. 1, the battery charging system architecture may include a power supply 100, a micro control unit MCU200, a charging chip 300, a load element 400, and a battery cell 500 of a battery to be charged. The load element 400 may include a trace between the charging chip and the battery to be charged, an anti-charging buckle switch, a connector of the battery to be charged, a flexible circuit board, and a protection board.
The power supply 100 is configured to supply power to the charging chip 300 so as to charge the battery cell 500 of the battery to be charged; MCU200 is used to manage and control charging chip 300, e.g., may be used to configure relevant charging parameters of charging chip 300; the charging chip 300 is used for managing and controlling a charging process of a battery to be charged, for example, may be used for switching a charging process of the battery to be charged, for example, from a constant current charging process to a constant voltage charging process; the load element 400 is used to turn on and/or protect the circuit; the battery cell 500 of the battery to be charged is used for storing electric quantity, and the quality of the battery cell 500 of the battery to be charged directly determines the quality of the battery to be charged.
A lithium battery is described as an example. The charging process of the lithium battery may be divided into four processes, i.e., a trickle charging process, a constant current charging process, a constant voltage charging process, and a charging termination process. For example, the charging chip 300 detects the battery voltage of the lithium battery, and when the battery voltage of the lithium battery is lower than 3V, the battery core 500 of the battery to be charged is pre-charged, for example, the battery to be charged is charged by using a current of 0.1C, that is, the battery to be charged is in a trickle charging process at this time. After a period of time, if it is detected that the voltage at the pin of the charging chip 300 reaches a certain set voltage (for example, set voltage 1), the charging chip 300 can control the charging process of the battery to be charged to be converted from the trickle charging process to the constant current charging process, and the battery cell 500 of the battery to be charged is charged with a certain set current (for example, set current 1) in a constant current manner. After a further period of time, if it is detected that the voltage at the pin of the charging chip 300 reaches another set voltage (for example, set voltage 2), the charging chip 300 can control the charging process of the battery to be charged to be converted from the constant current charging process to the constant voltage charging process, and the battery cell 500 of the battery to be charged is subjected to constant voltage charging at the other set voltage (for example, set voltage 2). Wherein the set voltage 2 is greater than the set voltage 1. After keeping constant voltage charging for a period of time, when detecting that the current at the pin of the charging chip 300 is another set current (for example, set current 2), the charging chip 300 can control the power supply 100 to stop charging the battery cell 500 of the battery to be charged. Wherein the set current 2 is smaller than the set current 1.
It should be noted that the structure shown in fig. 1 is merely an example, and the embodiment of the present application is not limited thereto.
Based on the above description, fig. 2 illustrates a flow of a method for charging a battery according to an embodiment of the present application, which may be performed by a device for charging a battery.
As shown in fig. 2, the process specifically includes:
step 201, detecting a voltage of a charging chip.
The voltage of the charging chip can be detected in real time by setting a voltage-current detector, or the voltage-current detector detects the voltage according to a preset period, and the detected voltage-current detector sends the detected voltage-current to the charging chip. Or the charging chip can also automatically detect the voltage and current of the charging chip, for example, the charging chip can detect the voltage and current of the charging chip in real time, or can detect the voltage and current according to a preset period and store the detected voltage and current so as to compare the detected voltage with the charging cut-off voltage of each configured different charging process, thereby determining which process the current charging process of the battery to be charged is in, or whether the charging process needs to be switched. For example, when the detection is performed at a preset period, the detection of the voltage current of the charging chip may be performed at every interval of 3s, 5s, 10s, or the like.
In addition, before the voltage of the charging chip is detected, when the charging chip is detected to be in a power-on starting state, the MCU (Micro Control Unit, the micro control unit) configures a charging cut-off voltage parameter of the charging chip in a constant voltage charging process to be a first set voltage, and configures a charging cut-off current parameter of the charging chip in the constant voltage charging process to be a first set current, and then support can be provided for the subsequent detection of the voltage of the charging chip as the first set voltage entering the constant voltage charging process. Meanwhile, the charging cut-off voltage parameter of the charging chip in the constant-current charging process is configured to be a second set voltage, and the charging cut-off current parameter of the charging chip in the constant-current charging process is configured to be a second set current, so that when the voltage of the charging chip is detected to reach the second set voltage, the charging process of the battery to be charged can be timely converted from the trickle charging process (i.e. the pre-charging process) to the constant-current charging process, and the battery to be charged is subjected to constant-current charging by the second set current. Wherein the second set voltage is smaller than the first set voltage; the second set current is greater than the first set current. That is, when it is detected that the charging chip is powered on, relevant parameters of the charging chip, such as an admission voltage for entering a constant voltage charging process (i.e., a switching voltage required when a constant current charging process is switched to a constant voltage charging process), a charging cutoff current, an admission voltage for entering a constant current charging process (i.e., a switching voltage required when a trickle charging process is switched to a constant current charging process), and a charging current required for constant current charging, are configured in advance, so that the charging chip can timely and accurately control a charging process of a battery to be charged based on the relevant parameters.
Illustratively, describing a lithium battery as an example, when the charging chip is detected to be at a power-on start, the charging cut-off voltage parameter of the charging chip in the constant voltage charging process is configured to be 4.5V, and the charging cut-off current parameter of the charging chip in the constant voltage charging process is configured to be 0.2A through the MCU. Meanwhile, the charging cut-off voltage parameter of the charging chip in the constant current charging process is configured to be 3V, and the charging cut-off current parameter of the charging chip in the constant current charging process is configured to be 0.3A. When the voltage of the charging chip reaches 3V, the charging chip determines that the 3V is matched with the switching voltage (such as 3V) required when the trickle charging process is switched to the constant current charging process, so that the charging process of the battery to be charged can be controlled to be converted from the trickle charging process to the constant current charging process, and the battery to be charged is charged with 0.3A.
Step 202, when the voltage of the charging chip is a first set voltage, constant voltage charging is performed on the battery to be charged with the first set voltage.
When the voltage of the charging chip is detected to be a first set voltage, the charging chip determines that the first set voltage is matched with the switching voltage required when the constant-current charging process is switched to the constant-voltage charging process, so that the charging process of the battery to be charged can be controlled to be converted from the constant-current charging process to the constant-voltage charging process, and the battery to be charged is subjected to constant-voltage charging by the first set voltage. The first set voltage is larger than the charge cut-off voltage of the battery to be charged. For example, taking the first set voltage configured as 4.5V as an example, after the battery to be charged is subjected to constant current charging for a period of time by using the second set current, when the voltage of the charging chip is detected to reach 4.5V, the charging chip determines that the 4.5V is matched with the switching voltage (for example, 4.5V) required when the constant current charging process is switched to the constant voltage charging process, so that the charging process of the battery to be charged can be controlled to be switched from the constant current charging process to the constant voltage charging process, and the constant voltage charging is performed on the battery to be charged by using the 4.5V.
Wherein the first set voltage may be determined by: the first set voltage is determined based on the charge cutoff voltage, the first set current, and the resistance of the load element. The load element may include a trace between the charging chip and the battery to be charged, an anti-charging buckle switch, a connector of the battery to be charged, a flexible circuit board, a protection board, and the like. Furthermore, the resistance of the load element is determined by:
Acquiring the resistance of the wiring through electronic automatic simulation; acquiring the resistance of the anti-electrification buckling switch through the performance parameter information of the anti-electrification buckling switch; acquiring the resistance of the connector through the performance parameter information of the connector of the battery to be charged; and acquiring the resistance of the flexible circuit board and the resistance of the protection board through the performance parameter information of the battery to be charged. Then, the resistance of the load element is determined based on the resistance of the trace, the resistance of the anti-live snap switch, the resistance of the connector, the resistance of the flexible circuit board, and the resistance of the protective plate.
Illustratively, the trace impedance (i.e., resistance) can be obtained by EDA (Electronic Design Automation ) simulation; obtaining the impedance of the anti-electrification buckling switch through an anti-electrification buckling switch specification; obtaining a BTB connector impedance through a Board-to-Board connector (Board-to-Board connector) specification of a battery to be charged; the impedance of the flexible circuit board of the battery to be charged and the impedance of the protective board of the battery to be charged are obtained through the specification of the battery to be charged, so that the resistance of the load element can be determined, and support is provided for determining the first set voltage.
Specifically, referring to fig. 3, fig. 3 is a schematic structural diagram of charging a battery to be charged according to an embodiment of the present application, where the first set voltage may satisfy the following forms:
V2＝V1+I2×R
Wherein V 2 is a first set voltage (i.e., an access voltage set by a register of a charging chip to enter a constant voltage charging process), V 1 is a charge cut-off voltage of a battery to be charged (i.e., a charge limit voltage of a battery cell of the battery to be charged), I 2 is a first set current, and R is a resistance of a load element.
Further, the first set current is determined by: the first set current is determined according to the charge cut-off current and the second set current. The first set current is larger than the charge cut-off current of the battery to be charged.
It should be noted that, based on fig. 3, if the technical solution in the present application only configures the charge cutoff voltage parameter of the charging chip in the constant voltage charging process to the first set voltage, but not configures the charge cutoff current parameter of the charging chip in the constant voltage charging process to the first set current, since the first set voltage is greater than the charge cutoff voltage of the battery to be charged, the charging current of the battery to be charged is reduced to the charge cutoff current, the charging chip controls the power supply to stop charging the battery to be charged, so that the condition of overcharging occurs in the battery to be charged, and therefore, when the charge cutoff voltage parameter in the constant voltage charging process is configured to the first set voltage, the charge cutoff current parameter in the constant voltage charging process is also configured to the first set current, so as to ensure that the requirement of obviously optimizing the charging time can be met for the compensation of the voltages at both ends of the battery to be charged, and the condition of overcharging occurring in the battery to be charged can be avoided, so as to ensure the service life of the battery to be charged. In addition, if the current required for determining the first set voltage takes only a current equal to or less than the charge cutoff current, this results in that the compensation for the voltage across the battery to be charged is too small to be obvious for the charge time optimization of the battery to be charged, and therefore, when the current required for determining the first set voltage takes only a certain current greater than the charge cutoff current.
Specifically, the first set current may satisfy the following form:
I1≤I2≤50％I0
Wherein I 1 is a charge cutoff current of the battery to be charged, I 2 is a first set current, and I 0 is a constant charging current of the battery to be charged in a constant current charging process.
For example, describing the formula satisfied by the first set voltage, if only the charge cutoff voltage parameter of the charging chip during constant voltage charging is configured as V 2, and the charge cutoff current parameter of the charging chip during constant voltage charging is not configured as I 2, or is maintained as I 1, then when calculating V 2, I 2 can be only equal to or less than I 1, otherwise, the charging of the battery to be charged may occur with risk of overcharging. For example, assuming that R is 0.1Ω, I 1 is 0.1a, V 1 is 4.4V, and I 2 is 0.2A, V 2 is 4.42V, and thus, when the charging current through the cell of the battery to be charged is 0.12A, the charging voltage across the cell of the battery to be charged at this time can be calculated to be 4.42-0.1×0.12= 4.408V. In this case, the charging voltage 4.408V at the two ends of the battery cell of the battery to be charged is greater than the charging limit voltage of the battery to be charged by 4.4V, which may cause the risk of overcharge during charging of the battery to be charged.
Moreover, if the value of I 2 is only equal to or less than the value of I 1, the compensation for the voltage across the battery to be charged will be too small, and the optimization for the charging time of the battery to be charged will not be obvious. Thus, in calculating V 2, I 2 can only be greater than I 1.
And 203, when the constant voltage charging is performed, the charging current of the battery to be charged is smaller than or equal to a first set current, and the charging of the battery to be charged is stopped.
In the constant voltage charging process of the battery to be charged, if the current at the pin of the charging chip is detected to be smaller than or equal to the first set current, the charging of the battery to be charged is stopped. In particular, two implementations can be distinguished. The first implementation way is: and if the working state of the MCU is determined to be a normal state, when the charging current of the battery to be charged in the constant voltage charging process is detected to be a third set current, adjusting the charging cut-off current parameter configured by the charging chip from the first set current to the charging cut-off current through the MCU, adjusting the charging cut-off voltage parameter configured by the charging chip from the first set voltage to the third set voltage, and stopping charging the battery to be charged when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the charging cut-off current. Wherein the third set current is greater than the first set current; the third set voltage is determined based on the charge cutoff voltage, the charge cutoff current, and the resistance of the load element.
Illustratively, since the charging current is constantly changing, i.e., the charging current is constantly decreasing, during constant voltage charging, that is, the charging current is constantly decreasing from the second set current during constant voltage charging. based on this, when the operating state of the MCU is normal, when detecting that the current at the pin of the charging chip is reduced to be close to I 2 (such as 1.1I 2), or when detecting that the charging current of the battery to be charged is reduced to be close to I 2 (such as 1.1I 2), The MCU will actively adjust the charge cutoff current parameter of the charge chip configuration from a first set current to a charge cutoff current, e.g., from I 2 to I 1, and adjust the charge cutoff voltage parameter of the charge chip configuration from a first set voltage to a third set voltage, e.g., from V 2 to V 1+I1 xr. Thus, the voltage at two ends of the battery to be charged can be kept at the charging cut-off voltage (namely V 1) all the time, and when the charging current of the battery to be charged is reduced from 1.1I 2 to I 1, the charging chip controls the power supply to stop charging the battery to be charged, Thereby, the electric quantity of the battery to be charged can be fully charged. in addition, it should be noted that, in general, the closer I 2 is to 50% I 0, the higher the compensation for the voltage across the battery to be charged, the more advantageous it is to shorten the overall charging time of the battery to be charged, but if the value of I 2 is too high, in order to ensure that the electric quantity of the battery to be charged can be fully charged, it is necessary to adjust the charge cutoff current parameter of the charging chip from the first set current to the charge cutoff current and adjust the charge cutoff voltage parameter of the charging chip from the first set voltage to the third set voltage.
The second implementation mode is as follows: if the MCU fails and cannot work normally, the MCU cannot adjust the charge cut-off voltage parameter and the charge cut-off current parameter configured by the charging chip, and the charging of the battery to be charged in the constant voltage charging process is stopped when the charging current reaches a first set current (i.e. I 2), so that the condition that the voltages at the two ends of the battery to be charged are larger than the charge cut-off voltage can be avoided, the overcharge of the battery to be charged is avoided, the performance degradation of the battery to be charged can be avoided, and the service life of the battery to be charged is ensured. For example, if the MCU is down, when the charging current of the battery to be charged reaches the first set current (i.e., I 2), the charging chip controls the power supply to stop charging the battery to be charged, so as to avoid the overcharge of the battery to be charged caused by the down of the MCU, thereby ensuring the service life of the battery to be charged.
It should be noted that, if the technical solution in the present application only configures the charge cutoff voltage parameter of the charging chip during the constant voltage charging to the first set voltage, and does not configure the charge cutoff current parameter of the charging chip during the constant voltage charging to the first set current, but maintains the charge cutoff current. If the MCU is down, the first set voltage is larger than the charging cut-off voltage of the battery to be charged, so that the charging current of the battery to be charged is reduced to the charging cut-off current, and the charging chip controls the power supply to stop charging the battery to be charged, so that the battery to be charged is overcharged. For example, if R is 0.2Ω, I 1 is 0.1a, V 1 is 4.2V, and I 2 is 0.2A, V 2 is 4.24V, that is, the first set voltage is 4.22V, can be calculated. Based on this, since the MCU is down and cannot adjust the charge cutoff voltage parameter and the charge cutoff current parameter configured by the charging chip, the charging current of the battery to be charged in the constant voltage charging process is reduced to a current smaller than 0.2A, and the charging of the battery to be charged is stopped until the charging cutoff current is reduced, for example, the charging current of the battery to be charged in the constant voltage charging process is reduced to 0.15A, and then the charging voltage at the two ends of the battery cell of the battery to be charged at this time can be calculated to be 4.24-0.2x0.12=4.216V. Therefore, the charging voltage at the two ends of the battery core of the battery to be charged is 4.216V larger than the charging limiting voltage of the battery to be charged, so that the condition of overcharging of the battery to be charged can be caused, and the service life of the battery to be charged is influenced.
The above embodiment shows that, in the prior art, when the voltage of the charging chip is detected to reach the charge cut-off voltage of the battery to be charged, the constant-current charging process is converted into the constant-voltage charging process, and the charging voltage at both ends of the battery to be charged does not reach the charge cut-off voltage in practice due to the influence of the load element, but the charging of the battery to be charged enters the constant-voltage charging process in advance, so that the charging time of the constant-current charging process is short, the time of the constant-voltage charging process is long, and the whole charging time of the battery to be charged is further increased. Based on the above, the technical scheme of the application is that the constant-current charging process is converted into the constant-voltage charging process when the voltage of the charging chip reaches the first set voltage. Therefore, the scheme can compensate the voltage loss caused by the load element because the first set voltage is larger than the charge cut-off voltage, and can enable the charge voltage at two ends of the battery to reach the charge cut-off voltage, so that the time point of charging the battery to be charged into the constant voltage charging process is relatively late, the constant voltage charging process can not be advanced, the charging time of the constant current charging process is relatively longer, the time of the constant voltage charging process is relatively shorter, and the whole charging time of the battery to be charged is shortened, so that the purpose of shortening the charging time of the battery to be charged can be achieved. In addition, when the charging current of the battery to be charged is smaller than or equal to the first set current, the battery to be charged is stopped from being charged, and the condition that the battery to be charged is overcharged can be avoided, so that the service life of the battery to be charged is ensured.
Based on the same technical concept, the embodiment of the application also provides a battery charging device, which can execute the flow of the battery charging method.
As shown in fig. 4, the apparatus includes:
A detection module 401 for detecting a voltage of the charging chip;
The processing module 402 is configured to perform constant voltage charging on the battery to be charged with a first set voltage when the voltage of the charging chip is the first set voltage; the first set voltage is larger than the charge cut-off voltage of the battery to be charged; when the constant voltage charging is carried out, the charging current of the battery to be charged is smaller than or equal to a first set current, and the charging of the battery to be charged is stopped; the first set current is larger than the charge cut-off current of the battery to be charged.
In one possible implementation, the processing module 402 is specifically configured to:
determining the first set voltage according to the charge cut-off voltage, the first set current and the resistance of the load element
In one possible implementation manner, the load element comprises a wiring between a charging chip and a battery to be charged, an anti-electrification buckling switch, a connector of the battery to be charged, a flexible circuit board and a protection board;
the processing module 402 is specifically configured to:
acquiring the resistance of the wiring through electronic automatic simulation; acquiring the resistance of the anti-electrification buckling switch through performance parameter information of the anti-electrification buckling switch; acquiring the resistance of the connector through the performance parameter information of the connector of the battery to be charged; acquiring the resistance of the flexible circuit board and the resistance of the protection board through the performance parameter information of the battery to be charged;
and determining the resistance of the load element according to the resistance of the wiring, the resistance of the anti-electrification buckling switch, the resistance of the connector, the resistance of the flexible circuit board and the resistance of the protection board.
In one possible implementation, the processing module 402 is further configured to:
Before the voltage of the charging chip is detected, when the charging chip is detected to be in a power-on starting state, the charging cut-off voltage parameter of the charging chip in the constant voltage charging process is configured to be a first set voltage, and the charging cut-off current parameter of the charging chip in the constant voltage charging process is configured to be a first set current through the micro control unit MCU.
In one possible implementation, the processing module 402 is further configured to:
Before detecting the voltage of a charging chip, configuring a charging cut-off voltage parameter of the charging chip in a constant current charging process to be a second set voltage and configuring a charging cut-off current parameter of the charging chip in the constant current charging process to be a second set current through an MCU (micro control unit) when the charging chip is detected to be in a power-on starting state; the second set voltage is smaller than the first set voltage; the second set current is larger than the first set current;
and when the voltage of the charging chip is the second set voltage, constant-current charging is carried out on the battery to be charged by the second set current.
In one possible implementation, the processing module 402 is specifically configured to:
And determining the first set current according to the charge cut-off current and the second set current.
In one possible implementation, the processing module 402 is specifically configured to:
If the working state of the MCU is determined to be a normal state, when the charging current of the battery to be charged in the constant voltage charging process is detected to be a third set current, the charging cut-off current parameter configured by the charging chip is adjusted from the first set current to the charging cut-off current through the MCU, the charging cut-off voltage parameter configured by the charging chip is adjusted from the first set voltage to the third set voltage, and when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the charging cut-off current, the charging of the battery to be charged is stopped; the third set current is greater than the first set current; the third set voltage is determined based on a charge cutoff voltage, the charge cutoff current, and a resistance of a load element;
And if the working state of the MCU is determined to be an abnormal state, stopping charging the battery to be charged when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the first set current.
Based on the same technical concept, the embodiment of the present application further provides a computing device, as shown in fig. 5, including at least one processor 501 and a memory 502 connected to the at least one processor, where in the embodiment of the present application, a specific connection medium between the processor 501 and the memory 502 is not limited, and in fig. 5, the processor 501 and the memory 502 are connected by a bus, for example. The buses may be divided into address buses, data buses, control buses, etc.
In an embodiment of the present application, the memory 502 stores instructions executable by the at least one processor 501, and the at least one processor 501 may perform the steps included in the method for charging a battery described above by executing the instructions stored in the memory 502.
Where the processor 501 is a control center of a computing device, various interfaces and lines may be utilized to connect various portions of the computing device, and to implement data processing by executing or executing instructions stored in the memory 502 and invoking data stored in the memory 502. Alternatively, the processor 501 may include one or more processing modules, and the processor 501 may integrate an application processor and a modem processor, wherein the application processor primarily processes operating systems, user interfaces, application programs, etc., and the modem processor primarily processes issuing instructions. It will be appreciated that the modem processor described above may not be integrated into the processor 501. In some embodiments, processor 501 and memory 502 may be implemented on the same chip, or they may be implemented separately on separate chips in some embodiments.
The processor 501 may be a general purpose processor such as a Central Processing Unit (CPU), digital signal processor, application SPECIFIC INTEGRATED Circuit (ASIC), field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc., that may implement or perform the methods, steps, and logic diagrams disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in connection with the method embodiments of battery charging may be embodied directly in hardware processor execution or in a combination of hardware and software modules in a processor.
The memory 502, as a non-volatile computer readable storage medium, may be used to store non-volatile software programs, non-volatile computer executable programs, and modules. The Memory 502 may include at least one type of storage medium, and may include, for example, flash Memory, hard disk, multimedia card, card Memory, random access Memory (Random Access Memory, RAM), static random access Memory (Static Random Access Memory, SRAM), programmable Read-Only Memory (Programmable Read Only Memory, PROM), read-Only Memory (ROM), charged erasable programmable Read-Only Memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory, EEPROM), magnetic Memory, magnetic disk, optical disk, and the like. Memory 502 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 502 in embodiments of the present application may also be circuitry or any other device capable of performing storage functions for storing program instructions and/or data.
Based on the same technical idea, an embodiment of the present application further provides a computer-readable storage medium storing a computer program executable by a computing device, which when run on the computing device causes the computing device to perform the steps of the above-described method of battery charging.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A method of charging a battery, comprising:
detecting the voltage of the charging chip;
When the voltage of the charging chip is a first set voltage, carrying out constant voltage charging on the battery to be charged by using the first set voltage; the first set voltage is larger than the charge cut-off voltage of the battery to be charged;
when the constant voltage charging is carried out, the charging current of the battery to be charged is smaller than or equal to a first set current, and the charging of the battery to be charged is stopped; the first set current is larger than the charge cut-off current of the battery to be charged;
and when the constant voltage charging is performed, the charging current of the battery to be charged is smaller than or equal to a first set current, and the charging of the battery to be charged is stopped, and the method comprises the following steps:
If the working state of the MCU is determined to be a normal state, when the charging current of the battery to be charged in the constant voltage charging process is detected to be a third set current, the charging cut-off current parameter configured by the charging chip is adjusted from the first set current to the charging cut-off current through the MCU, the charging cut-off voltage parameter configured by the charging chip is adjusted from the first set voltage to the third set voltage, and when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the charging cut-off current, the charging of the battery to be charged is stopped; the third set current is greater than the first set current; the third set voltage is determined based on a charge cutoff voltage, the charge cutoff current, and a resistance of a load element;
And if the working state of the MCU is determined to be an abnormal state, stopping charging the battery to be charged when the charging current of the battery to be charged in the constant voltage charging process is determined to be equal to the first set current.
2. The method of claim 1, wherein the method further comprises:
And determining the first set voltage according to the charge cut-off voltage, the first set current and the resistance of the load element.
3. The method of claim 2, wherein the load element comprises a trace between a charging chip and a battery to be charged, an anti-charge snap-fit switch, and a connector, a flexible circuit board, a protective board of the battery to be charged;
The method further comprises the steps of:
Acquiring the resistance of the wiring through electronic automatic simulation;
acquiring the resistance of the anti-electrification buckling switch through performance parameter information of the anti-electrification buckling switch;
acquiring the resistance of the connector through the performance parameter information of the connector of the battery to be charged;
acquiring the resistance of the flexible circuit board and the resistance of the protection board through the performance parameter information of the battery to be charged;
and determining the resistance of the load element according to the resistance of the wiring, the resistance of the anti-electrification buckling switch, the resistance of the connector, the resistance of the flexible circuit board and the resistance of the protection board.
4. A method according to any one of claims 1 to 3, further comprising, prior to said detecting the voltage of the charging chip:
When the charging chip is detected to be in a power-on starting state, the micro control unit MCU configures a charging cut-off voltage parameter of the charging chip in a constant voltage charging process to be a first set voltage, and configures a charging cut-off current parameter of the charging chip in the constant voltage charging process to be a first set current.
5. A method according to any one of claims 1 to 3, further comprising, prior to said detecting the voltage of the charging chip:
When the charging chip is detected to be in a power-on starting state, the MCU configures a charging cut-off voltage parameter of the charging chip in a constant-current charging process to be a second set voltage, and configures a charging cut-off current parameter of the charging chip in the constant-current charging process to be a second set current; the second set voltage is smaller than the first set voltage; the second set current is larger than the first set current;
and when the voltage of the charging chip is the second set voltage, constant-current charging is carried out on the battery to be charged by the second set current.
6. The method of claim 5, wherein the method further comprises:
And determining the first set current according to the charge cut-off current and the second set current.
7. An apparatus for charging a battery, comprising: a module for performing the method of any of the preceding claims 1 to 6.
8. A computing device comprising at least one processor and at least one memory, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the method of any of claims 1 to 6.
9. A computer readable storage medium, characterized in that it stores a computer program executable by a computing device, which when run on the computing device, causes the computing device to perform the method of any of claims 1 to 6.
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| CN114336891A (en) * | 2022-01-14 | 2022-04-12 | 深圳市晶讯技术股份有限公司 | Rapid charging control method and device based on wire voltage drop compensation and related equipment |
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| CN104753093B (en) * | 2013-12-26 | 2018-01-19 | 南京德朔实业有限公司 | Charger and charging control method |
| CN105552978B (en) * | 2015-08-28 | 2018-05-15 | 宇龙计算机通信科技(深圳)有限公司 | Charging circuit, rechargeable battery and user terminal |
| CN106100028A (en) * | 2016-06-27 | 2016-11-09 | 深圳天珑无线科技有限公司 | Charger and charging circuit |
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