CN105182247B - Battery parameter calibration device and method - Google Patents
Battery parameter calibration device and method Download PDFInfo
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- CN105182247B CN105182247B CN201510595649.7A CN201510595649A CN105182247B CN 105182247 B CN105182247 B CN 105182247B CN 201510595649 A CN201510595649 A CN 201510595649A CN 105182247 B CN105182247 B CN 105182247B
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Abstract
The invention provides a battery parameter calibration method, which judges whether the electric quantity change speed of a battery is abnormal or not by detecting the electric parameters of the battery and calculating the instant electric quantity of the battery, and calibrates the battery parameters according to the relation between the electric parameters and the instant electric quantity, so that the electric quantity of the battery is displayed more accurately. The invention also provides a battery parameter calibration device applying the battery parameter calibration method.
Description
Technical Field
The invention relates to a battery parameter calibration method and a battery parameter calibration device applying the battery parameter calibration method.
Background
With the development of mobile communication technology, mobile devices such as mobile phones and tablet computers have been widely used in life and work of people. These devices will preset a battery parameter for calculating and displaying the instant charge of the battery. However, even if the devices of the same model are different, the individual devices may have a certain difference, and the aging degree of the battery of the device may be different due to different personal habits, and if the battery power is calculated and displayed according to the preset battery parameters, a larger error may be generated between the display result and the actual value.
Disclosure of Invention
The invention mainly solves the technical problem of providing a device capable of automatically calibrating battery parameters and a battery parameter calibration method.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is a battery parameter calibration device including:
the calculation module is used for calculating the instant electric quantity of the battery according to the value of the first default parameter;
the state detection module is used for detecting a first electrical parameter of the battery;
the control module judges the charging and discharging state of the battery and judges the change speed of the electric quantity of the battery according to the first electric parameter and the instant electric quantity, and when the battery is in the charging process, the first electric parameter is the instant current of the battery; when the instant current of the battery is not larger than a first preset value and the instant electric quantity of the battery is smaller than a second preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant current of the battery is larger than a first preset value and the instant electric quantity of the battery is larger than or equal to a second preset value, judging that the electric quantity change speed of the battery is higher than an actual value; when the battery is in a discharging process, the first electrical parameter is the instant voltage of the battery; when the instant voltage of the battery is smaller than a third preset value and the instant electric quantity of the battery is larger than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant voltage of the battery is not less than a third preset value and the instant electric quantity of the battery is not more than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the control module judges that the battery electric quantity change speed is abnormal, the control module correspondingly adjusts the value of the first default parameter according to the judgment result of the battery electric quantity change speed.
The battery parameter calibration device further comprises a storage module, and the storage module is used for storing the value of the first default parameter.
The battery parameter calibration device further comprises a display module, the display module is connected to the calculation module, and the display module is used for displaying the instant electric quantity of the battery.
The first preset value is 150 milliamperes, and the second preset value is 100.
Wherein the third preset value is 3.45 volts, and the fourth preset value is 1.
In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a method for calibrating a battery parameter, including:
reading a first default parameter, and calculating the instant electric quantity of the battery according to the read value of the first default parameter;
detecting a first electrical parameter of the battery;
detecting the charge-discharge state of the battery, and judging whether the change speed of the battery electric quantity is normal according to the battery electric quantity and a first electric parameter: when the battery is in a charging process, the first electrical parameter is the instant current of the battery; when the instant current of the battery is not larger than a first preset value and the instant electric quantity of the battery is smaller than a second preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant current of the battery is larger than a first preset value and the instant electric quantity of the battery is larger than or equal to a second preset value, judging that the electric quantity change speed of the battery is higher than an actual value; when the battery is in a discharging process, the first electrical parameter is the instant voltage of the battery; when the instant voltage of the battery is smaller than a third preset value and the instant electric quantity of the battery is larger than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant voltage of the battery is not less than a third preset value and the instant electric quantity of the battery is not more than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value;
and if the change speed of the electric quantity of the battery is abnormal, correspondingly adjusting the value of the first default parameter according to the speed of the change speed of the electric quantity.
And executing initialization battery driving before reading the first default parameter.
The first default parameter is a battery charging and discharging speed.
The first preset value is 150 milliamperes, the second preset value is 100, the third preset value is 3.45 volts, and the fourth preset value is 1.
Wherein the execution period of the battery calibration parameter method is 10 seconds.
The invention has the beneficial effects that: different from the situation of the prior art, the battery parameter calibration device and the battery parameter calibration method provided by the invention automatically calibrate the battery parameters by detecting the relationship between the self charge-discharge state and the electric quantity, and the problem of abnormal electric quantity change caused by the fact that the initial parameters cannot be well matched can be automatically corrected along with the use of a user, so that the accuracy of electric quantity display is improved, and the user experience is improved.
Drawings
Fig. 1 is a block diagram of a preferred embodiment of the battery parameter calibration apparatus of the present invention.
FIG. 2 is a flow chart of a preferred embodiment of the battery parameter calibration method of the present invention.
Fig. 3 is a diagram illustrating a change in the capacity of the battery when the rate of change in the capacity of the battery during discharge is lower than an actual value.
Fig. 4 is a diagram illustrating a change in charge amount when the charge amount change speed of the battery is higher than an actual value during the discharge process.
Fig. 5 is a schematic diagram of the variation of the electric quantity in the battery discharging process after the battery parameter calibration method of the present invention is applied.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 1, in a preferred embodiment of the battery parameter calibration apparatus 100 of the present invention, the battery parameter calibration apparatus 100 includes a calculation module 11, a state detection module 12, a control module 13, a storage module 14 and a display module 15.
The storage module 14 is configured to store a value of a first default electrical parameter N. In this embodiment, the initial value of the first default electrical parameter N is N1, and the initial electrical quantity at the start of calibration of the battery (not shown) is M1.
The computing module 11 is connected to the storage module 11. The calculation module 11 reads the value N1 of the first default electrical parameter N and calculates the battery instantaneous electric quantity M2 through N1. The calculation module 11 further outputs a signal to the display module 15 to control the display module 15 to display the instant battery power M2.
The state detection module 12 is configured to detect a first electrical parameter of the battery. In this embodiment, the first electrical parameter includes, but is not limited to, current and voltage.
The control module 13 is connected to the status detecting module 12 to receive the first electrical parameter outputted by the status detecting module 12. The control module 13 determines the state of the battery, and determines whether the change speed of the electric quantity of the battery is normal according to the first electric parameter and the instant electric quantity M2, when the change speed of the electric quantity in the charging and discharging process of the battery is abnormal, such as too fast or too slow, the control module 13 correspondingly adjusts the value of the first default electric parameter N, and stores the adjusted value in the storage module 14.
When the instant electric quantity M2 of the battery is greater than the initial electric quantity M1, the control module 13 determines that the battery is in a charging state, and the control module 13 compares the current of the first electrical parameter with a first preset value. When the current is not greater than the first preset value and the instant electric quantity M2 is smaller than the second preset value, the control module 13 determines that the battery electric quantity variation speed is lower than an actual value. When the current is greater than the first preset value and the instant electric quantity M2 is not less than the second preset value, the control module 13 determines that the battery electric quantity variation speed is higher than an actual value.
In this embodiment, the first preset value is 150mA (milliamp). The second preset value is 100. When the current of the battery is less than 150mA, the control module 13 determines that the battery enters a maintenance charging stage, i.e., compensation self-discharge, at which the battery is in a fully charged state, the actual electric quantity is 100, and if the immediate electric quantity M2 is less than 100, the control module 13 determines that the change speed of the electric quantity of the battery is lower than an actual value. The value N2 of the first default parameter N to be calibrated can be calculated by the formula (100-M1)/(M2-M1) ═ N2/N1. Similarly, when the current of the battery is greater than 150mA, the control module 13 determines that the battery is not fully charged, and the actual electric quantity is less than 100, and if the instant electric quantity M2 is equal to 100, the control module 13 determines that the change speed of the electric quantity of the battery is higher than the actual value.
When the instant electric quantity M2 of the battery is smaller than the initial electric quantity M1, the control module 13 determines that the battery is in a discharging state, and the control module 13 compares the voltage of the first electrical parameter with a third preset value. When the voltage is smaller than the third preset value and the instant electric quantity M2 is greater than the fourth preset value, the control module 13 determines that the battery electric quantity change speed is lower than an actual value. When the voltage is not less than the third preset value and the instant electric quantity M2 is not greater than the fourth preset value, the control module 13 determines that the battery electric quantity change speed is higher than an actual value.
In this embodiment, the third preset value is 3.45V (volts). The fourth preset value is 1. When the voltage of the battery is less than 3.45V, the control module 13 determines that the battery is about to complete discharging, and the actual electric quantity is 1. If the instant electric quantity M2 is greater than 1, the control module 13 determines that the battery electric quantity variation speed is lower than an actual value. The value N2 of the first default parameter N to be calibrated can be calculated by the formula (M1-1)/(M1-M2) ═ N2/N1. Similarly, when the voltage of the battery is greater than 3.45V, the control module 13 determines that the battery is not completely discharged, and the actual electric quantity is greater than 1, and if the instantaneous electric quantity M2 is equal to 1 or 0, the control module 13 determines that the battery electric quantity change speed is higher than the actual value.
In this embodiment, the first default electrical parameter is a battery charge/discharge rate.
In other embodiments, the first default electrical parameter may not be calibrated according to a formula, for example, when the control module 13 determines that the variation of the battery power speed is abnormal, the first default electrical parameter is adjusted by a unit value, so that an accurate value of the first default electrical parameter can be obtained through multiple calibrations.
In other embodiments, the first to fourth preset values may be set according to battery attributes, since different batteries have different thresholds in specific states.
Referring to fig. 2, the preferred embodiment of the battery parameter calibration method of the present invention includes steps S10-S18:
s10: the battery drive is initialized.
S12: and reading the value of the first default parameter, and calculating the electric quantity of the battery.
S14: a first electrical parameter of the battery is detected.
S16: detecting the charge-discharge state of the battery, judging whether the change speed of the electric quantity of the battery is normal or not according to the electric quantity of the battery and the first electric parameter, and ending the process if the change speed of the electric quantity of the battery is normal; if the battery charge variation speed is abnormal, go to step S18.
S18: and correspondingly adjusting the value of the first default parameter according to the abnormal speed of the electric quantity change.
The specific process of determining whether the battery power variation speed is normal in step S16 may refer to the description of the operation process of the control module 13, which is not described herein again. In a preferred embodiment, the value of the first default parameter adjusted in step S18 is directly fed back to the calculating module 11, and the calculating module 11 calculates the instant power of the battery according to the adjusted value of the first default parameter.
In another preferred embodiment, the value of the first default parameter adjusted in step S18 is saved in the storage module 14, and after the calibration process of the battery parameter calibration apparatus 100 is restarted, the calculation module 11 reads the adjusted value of the first default parameter from the storage module 14.
In this embodiment, the calibration cycle of the battery parameter calibration method is 10 seconds.
Fig. 3 is a schematic diagram of the change of the electric quantity when the change speed of the electric quantity of the battery is lower than the actual value in the discharge process of the battery, and the change of the electric quantity is obviously slowed down when the battery is nearly completely discharged.
Fig. 4 is a schematic diagram of the change of the battery capacity when the change speed of the battery capacity is higher than the actual value in the discharge process of the battery, and the battery capacity is sharply reduced when the discharge of the battery is close to the complete discharge.
Fig. 5 is a schematic diagram of the variation of the electric quantity in the battery discharging process after the battery parameter calibration method is applied, and the variation of the electric quantity of the battery after calibration is more accurate.
Compared with the prior art, the battery parameter calibration method and the battery parameter calibration device 100 provided by the invention can realize the self-calibration of the battery parameters by detecting the relationship between the self charge-discharge state and the electric quantity, and the problem of abnormal electric quantity change caused by the failure of well matching of the initial parameters can be automatically corrected along with the use process of a user, so that the accuracy of electric quantity display is improved, and the user experience is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A battery parameter calibration apparatus comprising:
the calculation module is used for calculating the instant electric quantity of the battery according to the value of the first default parameter;
the state detection module is used for detecting a first electrical parameter of the battery;
the control module judges the charging and discharging state of the battery and judges the change speed of the electric quantity of the battery according to the first electric parameter and the instant electric quantity, and when the battery is in the charging process, the first electric parameter is the instant current of the battery; when the instant current of the battery is not larger than a first preset value and the instant electric quantity of the battery is smaller than a second preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant current of the battery is larger than a first preset value and the instant electric quantity of the battery is larger than or equal to a second preset value, judging that the electric quantity change speed of the battery is higher than an actual value; when the battery is in a discharging process, the first electrical parameter is the instant voltage of the battery; when the instant voltage of the battery is smaller than a third preset value and the instant electric quantity of the battery is larger than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant voltage of the battery is not less than a third preset value and the instant electric quantity of the battery is not more than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the control module judges that the battery electric quantity change speed is abnormal, the control module correspondingly adjusts the value of the first default parameter according to the judgment result of the battery electric quantity change speed.
2. The battery parameter calibration device of claim 1, further comprising a storage module for storing the value of the first default parameter.
3. The battery parameter calibration device of claim 1, further comprising a display module, the display module being connected to the computing module, the display module being configured to display the instantaneous charge of the battery.
4. The battery parameter calibration apparatus of claim 1, wherein: the first preset value is 150 milliamperes, and the second preset value is 100.
5. The battery parameter calibration apparatus of claim 1, wherein: the third preset value is 3.45 volts and the fourth preset value is 1.
6. A battery parameter calibration method, comprising:
reading a first default parameter, and calculating the instant electric quantity of the battery according to the read value of the first default parameter;
detecting a first electrical parameter of the battery;
detecting the charge-discharge state of the battery, and judging whether the change speed of the electric quantity of the battery is normal or not according to the real-time electric quantity and the first electric parameter: when the battery is in a charging process, the first electrical parameter is the instant current of the battery; when the instant current of the battery is not larger than a first preset value and the instant electric quantity of the battery is smaller than a second preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant current of the battery is larger than a first preset value and the instant electric quantity of the battery is larger than or equal to a second preset value, judging that the electric quantity change speed of the battery is higher than an actual value; when the battery is in a discharging process, the first electrical parameter is the instant voltage of the battery; when the instant voltage of the battery is smaller than a third preset value and the instant electric quantity of the battery is larger than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value; when the instant voltage of the battery is not less than a third preset value and the instant electric quantity of the battery is not more than a fourth preset value, judging that the electric quantity change speed of the battery is lower than an actual value;
and if the change speed of the electric quantity of the battery is abnormal, correspondingly adjusting the value of the first default parameter according to the speed of the change speed of the electric quantity.
7. The battery parameter calibration method of claim 6, wherein: initializing the battery drive is performed before reading the first default parameter.
8. The battery parameter calibration method of claim 6, wherein: the first default parameter is a battery charging and discharging speed.
9. The battery parameter calibration method of claim 6, wherein: the first preset value is 150 milliamperes, the second preset value is 100, the third preset value is 3.45 volts, and the fourth preset value is 1.
10. The battery parameter calibration method according to any one of claims 6 to 8, wherein: the battery parameter calibration method is executed for a period of 10 seconds.
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| CN109655749B (en) * | 2018-11-20 | 2021-03-09 | 惠州拓邦电气技术有限公司 | Intelligent tracking and calibrating method and device for collected data matrix |
| CN111983525B (en) * | 2020-08-13 | 2023-01-13 | 宁波拜特测控技术股份有限公司 | Integrated testing method, system, terminal and storage medium for energy feedback battery pack |
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