CN112701739A - Battery protection method - Google Patents
Battery protection method Download PDFInfo
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- CN112701739A CN112701739A CN201911013259.9A CN201911013259A CN112701739A CN 112701739 A CN112701739 A CN 112701739A CN 201911013259 A CN201911013259 A CN 201911013259A CN 112701739 A CN112701739 A CN 112701739A
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- electric quantity
- quantity value
- value
- battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a battery protection method, which is suitable for a battery receiving charging voltage and comprises the steps of judging whether the maximum charging electric quantity value is equal to the rated electric quantity value or not, executing a first battery protection procedure when the maximum charging electric quantity value is equal to the rated electric quantity value, and executing a second battery protection procedure when the maximum charging electric quantity value is not equal to the rated electric quantity value, wherein the first battery protection procedure comprises determining whether the charging voltage is greater than the bearable voltage of the battery and the charging current is lower than the threshold current, when the charging voltage is higher than the carrying voltage and the charging current is lower than the threshold current, the rated electric quantity value is used as the display electric quantity value, when the charging voltage is not greater than the bearable voltage or the charging current is not lower than the threshold current, the real-time electric quantity value of the battery is taken as a display electric quantity value, and the electric quantity of the battery is displayed by the display electric quantity value on the display equipment.
Description
Technical Field
The present invention relates to a battery protection method, and more particularly, to a battery protection method for adjusting a display electric quantity value of a battery.
Background
In the existing hardware design and Protection measures for a battery, an Embedded Controller (Embedded Controller) is mostly used to read the electric quantity, Voltage, current, charging record and the like stored in a Gas Gauge (Gas Gauge), and then the Embedded Controller transmits the read data to an operating system for analysis, and when the charging Voltage received by the battery exceeds a threshold Voltage that can be borne by the battery, an Over Voltage Protection mechanism (OVP) is started for the battery to interrupt the charging of the battery.
In order to correctly report the information of the battery, the embedded controller usually reads the data from the battery fuel gauge, and then does not modify the read data. Therefore, when the information about the fully charged battery is not displayed all the time, the user may continuously charge the battery, which results in the battery being in a high-capacity state all the time, and the service life of the battery is shortened.
Disclosure of Invention
In view of the above, the present invention provides a battery protection method that satisfies the above-described need.
A battery protection method according to an embodiment of the present invention is adapted to a battery receiving a charging voltage, the method including: judging whether the maximum charging electric quantity value is equal to a rated electric quantity value or not; when the maximum charging electric quantity value is equal to the rated electric quantity value, executing a first battery protection program; and when the maximum charging electric quantity value is not equal to the rated electric quantity value, executing a second battery protection program, wherein the first battery protection program comprises the following steps: executing an over-voltage judgment mechanism to judge whether the charging voltage is greater than the bearable voltage of the battery and whether the charging current related to the charging voltage is lower than the threshold current; when the charging voltage is judged to be greater than the bearable voltage and the charging current is judged to be lower than the threshold current, the rated electric quantity value is taken as a display electric quantity value; when the charging voltage is not greater than the bearable voltage or the charging current is not lower than the threshold current, taking the real-time electric quantity value of the battery as the display electric quantity value; and displaying the electric quantity of the battery by the display electric quantity value at the display equipment.
The foregoing description of the disclosure and the following description of the embodiments are provided to illustrate and explain the spirit and principles of the invention and to provide further explanation of the invention as claimed.
Drawings
Fig. 1 is a flowchart illustrating a battery protection method according to an embodiment of the invention.
Fig. 2 is a flowchart illustrating a first battery protection procedure according to the embodiment of fig. 1.
Fig. 3 is a flowchart illustrating another first battery protection process according to the embodiment of fig. 1 and 2.
Fig. 4 is a flowchart illustrating a second battery protection procedure according to the embodiment of fig. 1.
Detailed Description
The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art from the disclosure of the present specification, the claims and the drawings. The following examples further illustrate aspects of the invention in detail, but are not intended to limit the scope of the invention in any way.
Referring to fig. 1 and fig. 2, fig. 1 is a flow chart illustrating a battery protection method according to an embodiment of the invention; fig. 2 is a flowchart illustrating a first battery protection procedure according to the embodiment of fig. 1. The battery protection method described in this embodiment is applicable to a battery that is receiving a charging voltage. In the following description, the real-time capacity value described in one or more embodiments of the present invention is preferably a percentage value obtained by dividing the real-time capacity of the battery by the rated capacity; the rated capacity value is a percentage value corresponding to the rated capacity, and is preferably represented by 100% in general, but the invention is not limited thereto.
With continued reference to fig. 1, when the battery is receiving the charging voltage, it is determined whether the maximum charging current value is equal to the rated current value at step S01, wherein the maximum charging current value is a record of the maximum current capacity reached by the battery. In other words, if the capacity of the battery reaches the upper limit capacity that can be reached by the charging voltage during the last charging, the maximum charging capacity value is the capacity value corresponding to the upper limit capacity. For example, if the upper limit capacity that can be charged with the charging voltage is 4800mHA at the last charging, the capacity corresponding to 4800mHA is 96%, and the capacity of the battery at the last charging is 4800mHA, the maximum charging capacity is 96%.
Referring to fig. 1, when the maximum charging capacity value is determined to be equal to the rated capacity value, a first battery protection procedure is performed (step S10); when it is judged that the maximum charging electric quantity value is not equal to the rated electric quantity value, a second battery protection process is performed (step S20).
Referring to fig. 1 and fig. 2, the first battery protection procedure (step S10) includes steps S101, S103, S105 and S107, wherein the step S101 executes an over-voltage determination mechanism, i.e., determines whether the charging voltage received by the battery is greater than the bearable voltage of the battery and whether the charging current received by the battery is lower than the threshold current. Wherein the bearable voltage is, for example, 4.35V or 12.6V; the threshold current is, for example, 100mA or 40mA, but the invention is not limited thereto.
Referring to fig. 2, when it is determined in step S101 that the charging voltage received by the battery is greater than the bearable voltage of the battery and the charging current is lower than the threshold current, step S103 is continued to use the rated charge value as the display charge value. For example, when the charging Voltage received by the battery is greater than the bearable Voltage and the charging current is lower than the threshold current, it is determined that the battery may bear an overvoltage (Over Voltage), and thus the display charge value is set to 100%. Otherwise, when it is determined in step S101 that the charging voltage received by the battery is not greater than the bearable voltage of the battery or the charging current is not lower than the threshold current, step S105 is continued to use the real-time electric quantity value as the display electric quantity value.
With reference to fig. 2, after the display electric quantity value is obtained in step S103 or S105, step S107 is executed to display the electric quantity value representing the electric quantity of the battery on the display device. In step S103 and the following step S107, the user can avoid that the battery continuously receives the charging voltage which cannot be carried by the battery and the battery is in a high-capacity state for a long time because the user determines that the real-time capacity of the battery does not reach the rated capacity. The display device is, for example, a display of an electronic device equipped with the battery, or a power display meter (for example, a lamp for displaying power) of the electronic device, but the invention is not limited thereto.
Referring to fig. 3, fig. 3 is a flowchart illustrating another first battery protection process (S10') according to the embodiment shown in fig. 1 and 2, and compared to the embodiment shown in fig. 2, the embodiment of fig. 3 further includes steps S109, S111, S113 and S115. In detail, the first battery protection program S10' of fig. 3 may also selectively execute steps S109 to S115 after executing steps S103 and S107 according to the determination result of step S101 (i.e., after executing steps S103 and S107, steps S109 to S115 may be executed continuously, and when executing step S105, only step S107 is executed continuously and steps S109 to S115 are not executed).
With continuing reference to fig. 3 and with reference to fig. 2 and 3, when the charging voltage is greater than the bearable voltage and the charging current is lower than the threshold current (S101), the rated charge value is used as the display charge value (S103), and the display device displays the charge of the battery with the display charge value (S107), the maximum charging charge value may be updated with the real-time charge value in step S109. Wherein the real-time electric quantity value corresponds to a percentage of the aforementioned real-time electric capacity.
Referring to fig. 3, after the maximum charging power value is updated by the real-time power value, the display power updating procedure is executed in step S111 to update the display power value. In detail, the display power update procedure preferably divides the real-time power value of the battery by the maximum charging power value to obtain a new percentage value, and adds an offset to the new percentage value to update the display power value. Wherein the offset is used to represent an error value between the real-time capacitance and the rated capacitance. In addition, if the new percentage value is greater than the critical rated power value, the display power updating process may update the display power value with the critical rated power value. The critical rated electric quantity value is preferably 99%, but the invention is not limited thereto.
Referring to fig. 3, after the display charge value is updated, the battery is interrupted from receiving the charging voltage in step S113 to control the battery to stop receiving the charging voltage exceeding the voltage that can be borne by the battery and the charging current lower than the threshold current, and the display device displays the charge of the battery with the updated display charge value in step S115.
Referring to fig. 4, fig. 4 is a flowchart illustrating a second battery protection procedure according to the embodiment of fig. 1. When it is determined at step S01 of fig. 1 that the maximum charging capacity value is not equal to the rated capacity value, a second battery protection process is performed (S20).
With continuing reference to fig. 4 and with reference to fig. 1, the second battery protection process (S20) of fig. 4 is executed after the maximum charging capacity value is not equal to the rated capacity value as determined in step S01 of fig. 1.
Referring to fig. 4, when the maximum charging capacity value is not equal to the rated capacity value, step S201 is executed to determine whether the maximum charging capacity value is different from a factory initial value, wherein the implementation manner of step S201 is preferably to determine whether the value of the address for storing the maximum charging capacity value is different from the factory initial value, wherein the factory initial value is, for example, 0%, and when the value of the address of the maximum charging capacity value is different from the factory initial value, it indicates that the maximum charging capacity value has been updated (the maximum charging capacity value has been updated to the maximum capacity value of the previous charging).
Referring to fig. 4, when it is determined in step S201 that the maximum charging power value is the same as the factory initial value, step S203 is executed to update the maximum charging power value with the preset power value, and step S205 is executed to determine whether the real-time power value is smaller than the maximum charging power value; on the contrary, when it is determined in step S201 that the maximum charging electric quantity value is different from the factory initial value, step S205 is performed. The preset electric quantity is, for example, 95%, but the invention is not limited thereto.
Referring to fig. 4, when it is determined in step S205 that the real-time charge value is not less than the maximum charge value, step S207 is executed to update the display charge value with the critical rated charge value.
For example, when the maximum charging electric quantity value is determined to be different from the factory initial value in step S201, or the maximum charging electric quantity value is updated by the preset electric quantity value in step S203, it indicates that the maximum charging electric quantity value has been updated to the upper limit value of the electric quantity reached in the previous charging or the preset electric quantity value, so that if it is determined that the real-time electric quantity value is not less than the maximum charging electric quantity value in step S205, it indicates that the display electric quantity value may be greater than the real-time electric quantity value, and therefore the display electric quantity value is updated by the critical rated electric quantity value in step S207, and the electric quantity of the battery is displayed by the display electric quantity value (S209), so as to prevent the user from removing the charging power supply by determining that the real-time electric quantity has reached the rated electric quantity according to the display electric quantity value when the electric quantity of the battery has not been charged.
Referring to fig. 4, after the display power value is updated in step S207, step S209 is executed to display the power value representing the power of the battery on the display device.
Referring to fig. 4, and returning to step S205 of the second battery protection process (S20), when it is determined in step S205 that the real-time charge value is smaller than the maximum charge value, it indicates that the charging voltage received by the battery may exceed the bearable voltage or the charging current is smaller than the threshold current.
Referring to fig. 4, after step S209 is completed, or when step S205 determines that the real-time charge value is smaller than the maximum charge value, step S211 is further performed to execute an over-voltage determination mechanism to determine whether the charge voltage is greater than the sustainable voltage of the battery and the charge current is lower than the threshold current, and step S213 is performed to use the rated charge value as the display charge value when step S211 determines that the charge voltage is greater than the sustainable voltage of the battery and the charge current is lower than the threshold current, wherein step S211 and step S213 are similar to step S101 and step S103 illustrated in fig. 2, and therefore, the description thereof is omitted.
Referring to fig. 4, otherwise, when the charging voltage is not greater than the bearable voltage of the battery or the charging current is not lower than the threshold current in step S211, step S215 is executed to determine whether the real-time charge value is greater than or equal to the critical rated charge value. When it is determined in step S215 that the real-time power value is smaller than the critical rated power value, the overvoltage determination mechanism of step S211 is executed; otherwise, when it is determined in step S215 that the real-time power value is greater than or equal to the critical rated power value, step S217 is performed to update the display power value with the real-time power value.
Referring to fig. 4, after the display electric quantity value is obtained in step S213 or step S217, step S219 is executed to display the electric quantity value representing the electric quantity of the battery on the display device.
With the above, the battery protection method provided in one or more embodiments of the present invention can timely prompt the user to remove the charging voltage by adjusting the display electric quantity value when the charging voltage received by the battery exceeds the bearable voltage or the received charging current is not lower than the threshold current, so as to effectively prevent the battery from being in a high-capacity state for a long time, and further achieve the purpose of prolonging the service life of the battery.
Claims (8)
1. A method for protecting a battery adapted to receive a charging voltage, the method comprising:
judging whether the maximum charging electric quantity value is equal to a rated electric quantity value or not;
when the maximum charging electric quantity value is equal to the rated electric quantity value, executing a first battery protection program; and
when the maximum charging electric quantity value is not equal to the rated electric quantity value, executing a second battery protection program, wherein the first battery protection program comprises the following steps:
executing an over-voltage judgment mechanism to judge whether the charging voltage is greater than the bearable voltage of the battery and whether the charging current related to the charging voltage is lower than the threshold current;
when the charging voltage is judged to be greater than the bearable voltage and the charging current is judged to be lower than the threshold current, the rated electric quantity value is taken as a display electric quantity value;
when the charging voltage is not greater than the bearable voltage or the charging current is not lower than the threshold current, taking the real-time electric quantity value of the battery as the display electric quantity value; and
and displaying the electric quantity of the battery by the display electric quantity value at the display equipment.
2. The method of claim 1, wherein the nominal power value is used as the display power value, and after the display device displays the power of the battery at the display power value, the method further comprises:
updating the maximum charging electric quantity value by the real-time electric quantity value, and executing a display electric quantity updating mechanism to update the display electric quantity value;
interrupting the battery from receiving the charging voltage; and
and presenting the electric quantity of the battery at the display equipment by the updated display electric quantity value.
3. The battery protection method according to claim 2, wherein the display power update procedure comprises: and calculating the display electric quantity value according to the proportion value of the real-time electric quantity value to the maximum charging electric quantity value.
4. The method of claim 3, wherein calculating the display electric quantity value according to the proportional value of the real-time electric quantity value corresponding to the maximum charging electric quantity value comprises: a percentage value of the real-time charge value divided by the maximum charge value is taken and added with an offset.
5. The battery protection method of claim 3, wherein the second battery protection process comprises:
judging whether the maximum charging electric quantity value is different from a factory initial value or not;
when the maximum charging electric quantity value is judged to be different from the factory initial value, judging whether the real-time electric quantity value is smaller than the maximum charging electric quantity value;
when the real-time electric quantity value is judged to be smaller than the maximum charging electric quantity value, executing the overvoltage judgment mechanism, and when the charging voltage is judged to be larger than the bearable voltage and the charging current is judged to be lower than the threshold current, taking the rated electric quantity value as the display electric quantity value, and when the charging voltage is judged to be not larger than the bearable voltage or the charging current is judged to be not lower than the threshold current, judging whether the real-time electric quantity value is larger than or equal to a critical rated electric quantity value;
when the charging voltage is judged to be not more than the bearable voltage or the charging current is judged to be not less than the threshold current, and the real-time electric quantity value is judged to be more than or equal to the critical rated electric quantity value, the display electric quantity value is updated by the real-time electric quantity value; and
and displaying the electric quantity of the battery at the display equipment according to the display electric quantity value.
6. The battery protection method according to claim 5, wherein the over-voltage determination mechanism is performed when it is determined that the real-time power value is not greater than or equal to the critical rated power value.
7. The battery protection method of claim 6, wherein when it is determined that the real-time battery charge is not less than the maximum charge value, the method further comprises:
updating the display electric quantity value according to the critical rated electric quantity value;
displaying the electric quantity of the battery by the display electric quantity value on the display equipment; and
the overvoltage determination mechanism is executed.
8. The method of claim 7, wherein when the maximum charging capacity value is determined to be the same as the factory initial value, the method further comprises:
updating the maximum charging electric quantity value by a preset electric quantity value;
judging whether the real-time electric quantity value is smaller than the maximum charging electric quantity value;
when the real-time electric quantity value is judged to be smaller than the maximum charging electric quantity value, executing the overvoltage judgment mechanism, and when the real-time electric quantity value is judged to be not smaller than the maximum charging electric quantity value, updating the display electric quantity value by a critical rated electric quantity value; and
and displaying the electric quantity of the battery at the display equipment according to the display electric quantity value.
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| CN201911013259.9A CN112701739B (en) | 2019-10-23 | 2019-10-23 | Battery protection method |
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| CN201911013259.9A CN112701739B (en) | 2019-10-23 | 2019-10-23 | Battery protection method |
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| CN112701739A true CN112701739A (en) | 2021-04-23 |
| CN112701739B CN112701739B (en) | 2023-05-09 |
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