Display electric quantity correction method and device

Abstract

A display electric quantity correction method is suitable for a target battery of which the battery temperature is lower than a threshold temperature, is executed by a controller and comprises the following steps: judging whether the target battery is a first type of battery or a second type of battery according to the design electric quantity of the target battery, when the target battery is a first type battery and the cell voltage of the target battery is lower than a threshold voltage, reducing the display electric quantity of the first type battery according to a first preset speed, and when the target battery is a second type battery and the capacitance parameter or the voltage parameter of the target battery is greater than a preset value, reducing the display electric quantity of the first type battery according to a second preset speed; and reducing the display electric quantity of the second-type battery according to a second preset speed.

Description

Technical Field

[0001] The present invention relates to a method and device for correcting the displayed battery power. Background Art

[0002] With the increasing popularity of personalized electronic devices, these electronic devices have been applied to various fields. For example, the electronic device may be a laptop computer or the like.

[0003] In some extreme cases, the electronic device may need to operate in an extremely low temperature environment. However, in an extremely low temperature environment, it may be impossible to detect the correct battery power of the electronic device due to the influence of temperature, and thus it is impossible to present the linear decrease trend of the battery power of the electronic device. Therefore, when using the electronic device at extremely low temperatures, the inaccurate displayed battery power may cause the electronic device to shut down abnormally. Summary of the Invention

[0004] In view of the above, the present invention provides a method and device for correcting the displayed battery power to solve the above problems.

[0005] According to an embodiment of the present invention, a method for correcting the displayed battery power is applicable to a target battery with a battery temperature lower than a threshold temperature. The method is executed by a controller and includes: determining whether the target battery is a first type of battery or a second type of battery according to the designed battery power of the target battery; when the target battery is a first type of battery and the cell voltage of the target battery is lower than a threshold voltage, reducing the displayed battery power of the first type of battery at a first preset speed; and when the target battery is a second type of battery and the capacitance parameter or voltage parameter of the target battery is greater than a preset value, reducing the displayed battery power of the second type of battery at a second preset speed.

[0006] According to an embodiment of the present invention, a device for correcting the displayed battery power is applicable to a target battery with a battery temperature lower than a threshold temperature, and includes: a power indicator and a controller. The power indicator is used to read the designed battery power of the target battery. The controller is connected to the power indicator, and the controller is used to execute the method for correcting the displayed battery power as described above.

[0007] In summary, according to one or more embodiments of the present invention, when using an electronic device (such as a laptop computer) equipped with a target battery at extremely low temperatures, the problem that the electronic device shuts down abnormally due to inaccurate displayed battery power can be avoided.

[0008] The above description of the content of the present invention and the following description of the embodiments are used to illustrate and explain the spirit and principle of the present invention, and provide a further explanation for the protection scope of the present invention. Brief Description of the Drawings

[0009] Figure 1It is a block diagram of a display power correction device according to an embodiment of the present invention.

[0010] Figure 2 It is a flowchart of a display power correction method according to an embodiment of the present invention.

[0011] Figure 3 It is a flowchart of a display power correction method according to another embodiment of the present invention.

[0012] Figure 4 It is a flowchart of determining the battery type according to an embodiment of the present invention.

[0013] Figure 5 It shows the display power generated without using the display power correction method and device of the present invention.

[0014] Figure 6 It shows the display power generated by using the display power correction method and device of the present invention.

[0015]

Description of Reference Numerals

[0016] 1: Display power correction device

[0017] 10: Power indicator

[0018] 11: Controller

[0019] P1, P2: Blocks

[0020] S101, S103, S105, S107, S109, S111, S201, S203, S205, S207, S209, S211, S301, S303: Steps Detailed Embodiment

[0021] The following details the features and advantages of the present invention in the embodiments. The content is sufficient for those of ordinary skill in the art to understand the technical content of the present invention and implement it accordingly. Based on the content, protection scope, and drawings disclosed in this specification, those of ordinary skill in the art can easily understand the related objectives and advantages of the present invention. The following embodiments further elaborate on the viewpoints of the present invention but do not limit the scope of the present invention in any way.

[0022] Please refer to Figure 1 , in which Figure 1 It is a block diagram of a display power correction device according to an embodiment of the present invention. The display power correction device 1 is applicable to a target battery with a battery temperature lower than the threshold temperature. The display power correction device 1 is applicable to a target battery with a battery temperature lower than the threshold temperature. For example, the threshold temperature is -10°C. As Figure 1As shown, the display power correction device 1 includes a power indicator 10 and a controller 11. The power indicator 10 is connected to the controller 11.

[0023] The power indicator 10 can be a voltmeter and / or an ammeter. The power indicator 10 is used to read the gauge of the target battery to obtain the designed power of the target battery, that is, the designed capacity of the target battery. For example, the designed power can be the designed voltage and the designed current. The controller 11 can include one or more processors, such as a central processing unit, a graphics processing unit, a microcontroller, a programmable logic controller, or other processors with signal processing functions. The controller 11 is used to correct the display power corresponding to the target battery based on the designed power read by the power indicator 10.

[0024] To describe the display power correction device 1 and the power correction method in more detail, please refer to Figure 1 and Figure 2 , where Figure 2 is a flowchart of the display power correction method shown according to an embodiment of the present invention. As Figure 2 shown, the display power correction method includes: Step S101: Obtain the designed power of the target battery; Step S103: Determine whether the target battery is a first type of battery or a second type of battery according to the designed power; when the judgment result of step S103 is "the first type of battery", execute step S105: Determine whether the cell voltage is lower than the threshold voltage; when the judgment result of step S105 is "yes", execute step S107: Reduce the display power of the first type of battery at a first preset speed; when the judgment result of step S105 is "no", execute step S101; when the judgment result of step S103 is "the second type of battery", execute step S109: Determine whether the capacitance parameter or the voltage parameter is greater than the preset value; when the judgment result of step S109 is "yes", execute step S111: Reduce the display power of the second type of battery at a second preset speed; and when the judgment result of step S109 is "no", execute step S101.

[0025] In step S101, the controller 11 receives the designed power of the target battery from the power indicator 10. In step S103, the controller 11 determines whether the target battery is a first type of battery or a second type of battery according to the designed power of the target battery. For example, the first type of battery is a cylindrical battery, and the second type of battery is an angular battery.

[0026] When the controller 11 determines that the target battery is a first type of battery, the controller 11 further executes step S105 to determine whether the cell voltage of any cell of the target battery is lower than the threshold voltage. For example, the threshold voltage is 3 volts. When the controller 11 determines that the cell voltage is lower than the threshold voltage, the controller 11 executes step S107 to reduce the displayed battery power of the target battery at a first preset speed. Conversely, when the controller 11 determines that the cell voltage is not lower than the threshold voltage, the controller 11 executes step S101 again.

[0027] When the controller 11 determines that the target battery is a second type of battery, the controller 11 further executes step S109 to determine whether the capacitance parameter or the voltage parameter is greater than a preset value. The capacitance parameter can be the difference between the current full charge capacity and the previous full charge capacity. The preset value corresponding to the capacitance parameter can be 150 mAh. The current full charge capacity can be the current full charge capacity of the target battery, and the previous full charge capacity can be the previous normal full charge capacity of the target battery (e.g., the full charge capacity at the time of factory). The voltage parameter can be the current voltage of the target battery, and the preset value corresponding to the voltage parameter can be the preset battery dead voltage.

[0028] When the controller 11 determines that the capacitance parameter or the voltage parameter of the target battery corresponds to the preset value, the controller 11 executes step S111 to reduce the displayed battery power of the target battery at a second preset speed. Conversely, when the controller 11 determines that both the capacitance parameter and the voltage parameter of the target battery are not greater than the corresponding preset values, the controller 11 executes step S101 again.

[0029] In one embodiment, the first preset speed can be different from the second preset speed. Further, the first preset speed can be less than the second preset speed. For example, the first preset speed can be to reduce the displayed battery power by 1% every 20 seconds, and the second preset speed can be to reduce the displayed battery power by 1% every 15 seconds.

[0030] Accordingly, even when using an electronic device (e.g., a laptop computer) equipped with the target battery at extremely low temperatures, the problem of abnormal shutdown of the electronic device caused by inaccurate displayed battery power can be avoided.

[0031] Please refer to Figure 1 and Figure 3 , where Figure 3 is a flowchart of a method for correcting the displayed battery power according to another embodiment of the present invention. As Figure 3As shown, the display power correction method includes: Step S201: Obtain the designed power of the target battery; Step S203: Determine whether the target battery is a first type of battery or a second type of battery according to the designed power; When the judgment result of Step S203 is "first type of battery", execute Step S205: Determine whether the cell voltage is lower than the threshold voltage; When the judgment result of Step S205 is "yes", execute Step S207: Reduce the display power of the first type of battery at a first preset speed; When the judgment result of Step S205 is "no", execute Step S201; When the judgment result of Step S203 is "second type of battery", execute Step S209: Determine whether the current voltage is greater than the preset depletion voltage and whether the capacitance of the target battery cannot be read; When the judgment result of Step S209 is "yes", execute Step S211: Reduce the display power of the second type of battery at a second preset speed; And when the judgment result of Step S209 is "no", execute Step S201.

[0032] Figure 3 Steps S201, S203, S205, S207 and S211 of Figure 2 may be the same as Steps S101, S103, S105, S107 and S111 of

[0033] In Step S209, the controller 11 determines whether the current voltage of the target battery is greater than the preset depletion voltage and whether the capacitance of the target battery cannot be read, wherein the implementation manner of determining whether the current voltage of the target battery is greater than the preset depletion voltage is as described above.

[0034] That the controller 11 cannot read the capacitance of the target battery may mean that when the target battery does not report the battery capacity to the battery fuel gauge, the controller 11 fails to read the capacitance of the target battery from the battery fuel gauge. When the controller 11 determines that the current voltage is greater than the preset depletion voltage and the target battery cannot report the battery capacity, the controller 11 executes Step S211. In other words, Step S211 may be executed when the current voltage is greater than the preset depletion voltage and the capacitance of the target battery cannot be read.

[0035] Please refer to Figure 1 and Figure 4 together, wherein Figure 4 is a flowchart for determining the battery type shown according to an embodiment of the present invention. Figure 4 can be regarded as Figure 2 Step S103 of Figure 3 and a detailed flowchart of an embodiment of Step S203 of Figure 4As shown, the method for determining the battery type includes step S301: reading the battery power database, where the battery power database includes the candidate design voltages and candidate design currents corresponding to the first type of battery and the second type of battery respectively; and step S303: comparing the design voltage of the target battery with the multiple candidate design voltages to determine whether the target battery is the first type of battery or the second type of battery, or comparing the design current of the target battery with the multiple candidate design currents to determine whether the target battery is the first type of battery or the second type of battery.

[0036] As described above, the design power of the target battery may include the design voltage and the design current. The battery power database stores the candidate design voltages and candidate design currents of the first type of battery and the candidate design voltages and candidate design currents of the second type of battery. For example, the storage method of the candidate design voltages and candidate design currents may be as shown in Table 1 below, but the present invention is not limited thereto.

[0037] Table 1

[0038] Battery type Candidate design voltage Candidate design current First type of battery First candidate design voltage First candidate design current Second type of battery Second candidate design voltage Second candidate design current

[0039] In step S301, the controller 11 reads the battery power database. In step S303, the controller 11 compares the design voltage of the target battery with the first candidate design voltage and the second candidate design voltage. When the comparison result indicates that the design voltage of the target battery is the same as the first candidate design voltage, the controller 11 may determine that the target battery is the first type of battery.

[0040] Alternatively, in step S303, the controller 11 compares the design current of the target battery with the first candidate design current and the second candidate design current. When the comparison result indicates that the design current of the target battery is the same as the first candidate design current, the controller 11 may determine that the target battery is the first type of battery.

[0041] Please also refer to Figure 5 and Figure 6 , where Figure 5 shows the display power generated without using the display power correction method and device of the present invention, Figure 6 shows the display power generated by using the display power correction method and device of the present invention. Figure 5 and Figure 6 The vertical axis of is power, and the horizontal axis is temperature.

[0042] In Figure 5 , as shown in block P1, when the temperature drops to about -20°C to -30°C without using the display power correction method and device of the present invention, the power of the target battery cannot be correctly displayed.

[0043] In Figure 6In [the situation], as shown in block P2, when using the display power correction method and device of the present invention, even when the temperature drops to about -30°C to -40°C, the power of the target battery can still be correctly displayed. Therefore, the problem of abnormal shutdown of the electronic device caused by inaccurate display of the battery power can be avoided.

[0044] In summary, according to the display power correction method and device of one or more embodiments of the present invention, even when using an electronic device (such as a laptop computer) equipped with a target battery at extremely low temperatures, the problem of abnormal shutdown of the electronic device caused by inaccurate display of the battery power can be avoided.

Claims

1. A method for correcting the displayed power, applicable to a target battery with a battery temperature lower than a threshold temperature, characterized in that, this method is executed by a controller and includes: judging whether the target battery is a first type of battery or a second type of battery according to the designed power of the target battery; when the target battery is the first type of battery and the voltage of a battery cell of the target battery is lower than a threshold voltage, reducing the displayed power of the first type of battery at a first preset speed; and when the target battery is the second type of battery and a capacitance parameter or a voltage parameter of the target battery is greater than a preset value, reducing the displayed power of the second type of battery at a second preset speed.

2. The method for correcting the displayed power according to claim 1, characterized in that, the first type of battery is a cylindrical battery, and the second type of battery is an angular battery.

3. The method for correcting the displayed power according to claim 1, characterized in that, the capacitance parameter is the difference between a current full charge capacity and a previous full charge capacity.

4. The method for correcting the displayed power according to claim 3, characterized in that, the preset value corresponding to the capacitance parameter is 150 mAh.

5. The method for correcting the displayed power according to claim 1, characterized in that, the voltage parameter is a current voltage, the preset value is a preset depletion voltage, and reducing the displayed power of the second type of battery at the second preset speed is executed when the current voltage is greater than the preset depletion voltage and the capacitance of the target battery cannot be read.

6. The method for correcting the displayed power according to claim 1, characterized in that, the first preset speed is less than the second preset speed.

7. The method for correcting the displayed power according to claim 1, characterized in that, the designed power includes a designed voltage and a designed current.

8. The method for correcting the displayed power according to claim 7, characterized in that, judging whether the target battery is the first type of battery or the second type of battery according to the designed power of the target battery includes: reading a power battery database, where the power battery database includes candidate designed voltages and candidate designed currents corresponding to the first type of battery and the second type of battery respectively; and comparing the designed voltage of the target battery with multiple candidate designed voltages to judge whether the target battery is the first type of battery or the second type of battery, or comparing the designed current of the target battery with multiple candidate designed currents to judge whether the target battery is the first type of battery or the second type of battery.

9. The method for correcting the displayed power according to claim 1, characterized in that, the battery cell voltage is the voltage of any one of multiple battery cells of the target battery.

10. A device for correcting the displayed power, applicable to a target battery with a battery temperature lower than a threshold temperature, characterized in that, it includes: a power indicator for reading the designed power of the target battery; and a controller connected to the power indicator, and the controller is used to execute the method for correcting the displayed power according to any one of claims 1 to 9.

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