CN112688400A - High-voltage optimized charging method and system based on intelligent battery of notebook computer platform - Google Patents
High-voltage optimized charging method and system based on intelligent battery of notebook computer platform Download PDFInfo
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Abstract
The invention provides a high-voltage optimized charging method and system based on an intelligent battery of a notebook computer platform, wherein the method comprises the following steps of: cell voltage monitoring: reading a cell voltage value in the intelligent battery information, and judging the cell voltage condition of the battery according to the cell voltage value; if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling; intelligently adjusting voltage: intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased. The invention has the beneficial effects that: 1. according to the high-voltage optimized charging method, due to the fact that the charging voltage is increased, the charging efficiency of the battery can be effectively improved.
Description
Technical Field
The invention relates to the field of intelligent batteries, in particular to a high-voltage optimized charging method and system based on an intelligent battery of a notebook computer platform.
Background
The conventional intelligent battery charging scheme under the existing notebook computer platform adopts a charging chip to fixedly output the charging voltage required by the battery, so that the battery finally achieves a full-charge state. In this state, the charging process is divided into constant current charging and constant voltage charging.
At present, with the development of intelligent battery technology, the maximum charging current of a battery is larger and larger, and some batteries can reach 1 time of capacity charging current or even 2 times of capacity charging current. However, this only improves the efficiency of constant current charging, and all smart batteries must undergo a constant voltage charging process when fully charged. In this process, the voltage is constant, and the current gradually decreases until the full cutoff current is reached, which can be a long process.
Also, in practice, the nominal charging voltage of the battery is not well matched to the battery. Because the charging chip may have poor accuracy, the actual output may have a voltage difference of 10 millivolts; meanwhile, as the circuit has impedance, larger differential pressure actually exists when large current exists; the cells themselves differ, the consistency must not be optimal, and the charging voltage of each cell will not reach the nominal voltage. The actual charging voltage is theoretically lower than the nominal voltage value in the specification, and the charging efficiency cannot reach the optimal value.
The existing charging scheme directly sets a nominal charging voltage and a limiting current, and controls the full charge of the battery by depending on the self-characteristics of the battery and an electricity meter chip on a small battery plate. This design does not completely match the battery nor does it improve the charging efficiency of the battery.
Disclosure of Invention
The invention provides a high-voltage optimized charging method based on an intelligent battery of a notebook computer platform, which comprises the following steps of:
cell voltage monitoring: reading a cell voltage value in the intelligent battery information, and judging the cell voltage condition of the battery according to the cell voltage value; and if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling.
Intelligently adjusting voltage: intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased.
As a further improvement of the present invention, the cell voltage monitoring step specifically further includes:
step 1: the cell voltage reading is performed through an SMBUS protocol according to the intelligent battery specification, and the cell voltage in the electric quantity meter chip is read.
Step 2: and (3) judging whether the cell voltage is normal, if so, executing the step (3), otherwise, entering corresponding error processing.
And step 3: and recording the highest cell voltage in all the cells.
As a further improvement of the present invention, in the step of intelligently adjusting the voltage, when the read highest cell voltage exceeds a set value, the step of decreasing the charging voltage further includes the following steps:
the first step is as follows: and reading the actual highest voltage of the battery cell.
The second step is as follows: and judging whether the cell voltage exceeds a set value, if so, executing the next step, and otherwise, entering the fifth step.
The third step: the external charging voltage is reduced.
The fourth step: and judging whether the charging voltage is lower than the design voltage of the battery, if so, setting the charging voltage as the design voltage of the battery, and otherwise, entering the fifth step.
The fifth step: and delaying to wait and returning to execute the first step.
As a further improvement of the present invention, in the step of intelligently adjusting the voltage, when the read actual highest voltage of the battery cell is lower than the lowest value, the step of raising the charging voltage further includes the following steps:
step S1: and reading the actual highest voltage of the battery cell.
Step S2: and judging whether the cell voltage is lower than the lowest value, if so, executing the next step, and otherwise, entering the step S5.
Step S3: the charging external electric voltage is boosted.
Step S4: and judging whether the cell voltage is higher than the highest voltage allowed by the power supply terminal, if so, setting the charging voltage as the highest voltage allowed by the power supply terminal, and otherwise, entering the step S5.
Step S5: the delay waits and returns to execute step S1.
As a further improvement of the present invention, in order to prevent frequent adjustment of the charging voltage, a hysteresis interval needs to be set when the cell voltage is determined, and only when the cell voltage exceeds the hysteresis interval, the corresponding charging voltage is adjusted to be increased or decreased; in the step of intelligently adjusting the voltage, the lowest value is a voltage value slightly lower than a design value of a battery cell.
The invention discloses a high-voltage optimized charging system based on an intelligent battery of a notebook computer platform, which comprises:
cell voltage monitoring unit: the intelligent battery management system is used for reading the cell voltage value in the intelligent battery information and judging the cell voltage condition of the battery according to the cell voltage value; and if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling.
The intelligent voltage regulation unit: the intelligent charging device is used for intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased.
As a further improvement of the present invention, the cell voltage monitoring unit further includes:
cell voltage reading module: and reading the cell voltage in the electric quantity meter chip according to the SMBUS protocol and the intelligent battery specification.
A judging module: and the error processing module is used for judging whether the cell voltage is normal or not, if so, entering the recording module, and otherwise, entering corresponding error processing.
A recording module: and the method is used for recording the highest cell voltage in all the cells.
As a further improvement of the present invention, in the intelligent regulation voltage unit, when the read highest cell voltage exceeds a set value, the method further includes:
a reading module: and reading the actual highest voltage of the cell.
A first judgment module: and the voltage control module is used for judging whether the cell voltage exceeds a set value, entering the voltage reduction module if the cell voltage exceeds the set value, and entering the time delay module if the cell voltage does not exceed the set value.
A voltage reduction module: for reducing the external charging voltage.
A second judging module: and the delay module is used for judging whether the charging voltage is lower than the design voltage of the battery, if so, setting the charging voltage as the design voltage of the battery, and otherwise, entering the delay module.
A time delay module: for delayed waiting and return to the read module.
As a further improvement of the present invention, in the intelligent voltage regulation unit, when the read actual highest voltage of the battery cell is lower than the lowest value, the step of increasing the charging voltage further includes:
a reading module: and reading the actual highest voltage of the cell.
A third judging module: and the voltage boosting module is used for judging whether the cell voltage is lower than the lowest value or not, and if so, the cell voltage enters the voltage boosting module, otherwise, the cell voltage enters the time delay module.
A voltage boost module: for boosting the charging external electrical voltage.
A fourth judging module: and the time delay module is used for judging whether the cell voltage is higher than the highest voltage allowed by the power supply end, if so, setting the charging voltage as the highest voltage allowed by the power supply end, and otherwise, entering the time delay module.
A time delay module: for delayed waiting and return to the read module.
As a further improvement of the present invention, in order to prevent frequent adjustment of the charging voltage, a hysteresis interval needs to be set when the cell voltage is determined, and only when the cell voltage exceeds the hysteresis interval, the corresponding charging voltage is adjusted to be increased or decreased; in the intelligent regulation voltage unit, the lowest value is a voltage value slightly lower than a design value of a battery cell.
The invention has the beneficial effects that: 1. according to the high-voltage optimized charging method, due to the fact that the charging voltage is increased, the charging efficiency of the battery can be effectively improved; 2. the high-voltage optimized charging method can monitor the voltage of each battery cell in real time, and can prevent the situation that certain battery cells exceed the nominal voltage during charging due to battery damage; 3. the high-voltage optimized charging method can intelligently increase voltage on software at the same time, and can effectively offset voltage loss caused by line impedance; 4. the high-voltage optimized charging method can enable the charging voltage to be more matched with each battery, give play to the optimal capacity characteristic of the battery, and can avoid some safety problems.
Drawings
FIG. 1 is a flow chart of core voltage monitoring for a high voltage optimized charging method of the present invention;
FIG. 2 is a flow chart of the intelligent regulation of voltage for the high voltage optimized charging method of the present invention;
FIG. 3 is a graph of percent charge for normal voltage charging and high voltage charging for the high voltage optimized charging method of the present invention;
fig. 4 is a voltage graph of normal voltage charging and high voltage charging for the high voltage optimized charging method of the present invention.
Detailed Description
The invention discloses a high-voltage optimized charging method based on an intelligent battery of a notebook computer platform, which comprises the following steps of:
cell voltage monitoring: reading a cell voltage value in the intelligent battery information, and judging the cell voltage condition of the battery according to the cell voltage value; and if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling.
The battery scheme under the laptop platform is usually an intelligent battery scheme with a small battery plate. The scheme has the advantages that the scheme is provided with the electricity meter chip and the battery protection board, and the calculation of the electric quantity and the safety protection of the battery can be effectively managed. Similarly, the electricity meter chip will measure the actual voltage value of each cell, and feed back the voltage value to the software through the SMBUS protocol according to the intelligent battery specification.
As shown in fig. 1, the high-voltage optimized charging method of the present invention reads the cell voltage in the electricity meter according to the specification of the intelligent battery through the SMBUS protocol. The general intelligent battery is formed by connecting 2-4 batteries in unequal series, after the battery cell voltage is read by software, whether the battery cell voltage is normal or not is judged, and if the battery cell voltage is abnormal, if the battery cell voltage exceeds the full charging voltage of the battery, corresponding error processing is carried out. And if the cell voltage is normal, recording the cell voltage with the highest voltage in all the cells.
Intelligently adjusting voltage: intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased. (note: the lowest value means a voltage value slightly lower than the design value of the battery cell, and means a voltage value which the cell should reach in the hysteresis space, and is usually set to (cell design value-50 mV)).
In the battery specification, there are several key parameters, including the cell full charge voltage, the battery charge voltage, and the cell primary protection voltage. The full-charge voltage of the battery cell refers to the voltage of the battery cell when a single battery cell is designed to be full, and the highest voltage value of the battery cell is judged and should not exceed the voltage value. The battery charging voltage refers to the charging voltage externally supplied to the battery in a normal state, and the normal charging voltage set by people should not be lower than the voltage value. The primary battery cell protection voltage means that when the battery cell voltage exceeds the voltage value, the battery protection board can protect the battery and cut off external charging setting.
As shown in fig. 2, in the step of intelligently adjusting the voltage, when the read actual highest voltage of the battery cell is lower than the lowest value, the step of raising the charging voltage further includes the following steps:
step S1: and reading the actual highest voltage of the battery cell.
Step S2: and judging whether the cell voltage is lower than the lowest value, if so, executing the next step, and otherwise, entering the step S5.
Step S3: the charging external electric voltage is boosted.
Step S4: and judging whether the cell voltage is higher than the highest voltage allowed by the power supply terminal, if so, setting the charging voltage as the highest voltage allowed by the power supply terminal, and otherwise, entering the step S5.
Step S5: the delay waits and returns to execute step S1.
In the charging process of the high-voltage optimized charging method, when the highest voltage of the battery cell is read to be not higher than the full-charge voltage value of the battery cell, the peripheral charging voltage can be set to be higher than the designed charging mode of the battery. And the voltage can be gradually increased, but since the actual reaction of the cell voltage lags after the actual charging voltage is set, the voltage needs to be gradually increased after waiting for a certain time.
The elevated high voltage should not exceed the charging voltage of the battery too much theoretically, which would affect the safety of the battery. In the high-voltage optimized charging method, the highest charging voltage does not exceed the sum of primary protection voltages of all the battery cells.
As shown in fig. 2, in the step of intelligently adjusting the voltage, when the read highest cell voltage exceeds a set value, the step of reducing the charging voltage further includes the following steps:
the first step is as follows: and reading the actual highest voltage of the battery cell.
The second step is as follows: and judging whether the cell voltage exceeds a set value, if so, executing the next step, and otherwise, entering the fifth step.
The third step: the external charging voltage is reduced.
The fourth step: and judging whether the charging voltage is lower than the design voltage (lowest voltage) of the battery, if so, setting the charging voltage as the design voltage of the battery, and otherwise, entering the fifth step.
The fifth step: and delaying to wait and returning to execute the first step.
When the actual voltage of the battery cell is higher than the full charging voltage of the battery cell, the external charging voltage needs to be reduced, so that the battery cell does not exceed the primary protection voltage to cause battery charging protection. In the high-voltage optimized charging method of the present invention, the lowest actual charging voltage is also set, and the voltage value is the battery charging voltage in the battery specification.
In order to prevent frequent adjustment of the charging voltage, a hysteresis interval needs to be set when the cell voltage is judged, and the corresponding charging voltage is adjusted to be increased or decreased only when the cell voltage exceeds the hysteresis interval; in the step of intelligently adjusting the voltage, the lowest value is a voltage value slightly lower than a design value of a battery cell.
Fig. 3 is a graph showing the percentage of charge for normal voltage charging and high voltage charging. It can be seen that the high voltage charging curve charges faster during constant current charging because the voltage is higher than normal and the efficiency is higher for the same current. And when the high-voltage curve is to be filled later, the high-voltage curve has a small section of final jump due to the final intelligent voltage regulation, so that the high-voltage curve can be filled more quickly.
Fig. 4 shows voltage curves of normal voltage charging and high voltage charging. It can be seen that the voltage of the high-voltage curve is increased more quickly, and after the battery is charged fully, the battery cell can actually reach a more full-charge state. The reason is that after the voltage is increased, the state of each battery cell can be intelligently judged, and the battery can be better in the maximum full-charge state.
The high-voltage optimized charging method is not limited to a notebook computer platform and can be applied to various platforms needing batteries. Particularly, in a battery composed of a plurality of cells, the maximum efficiency of the battery can be achieved by detecting each cell and performing charging control according to the cell state.
The invention also discloses a high-voltage optimized charging system based on the intelligent battery of the notebook computer platform, which comprises the following components:
cell voltage monitoring unit: the intelligent battery management system is used for reading the cell voltage value in the intelligent battery information and judging the cell voltage condition of the battery according to the cell voltage value; and if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling.
The intelligent voltage regulation unit: the intelligent charging device is used for intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased.
The cell voltage monitoring unit further includes:
cell voltage reading module: and reading the cell voltage in the electric quantity meter chip according to the SMBUS protocol and the intelligent battery specification.
A judging module: and the error processing module is used for judging whether the cell voltage is normal or not, if so, entering the recording module, and otherwise, entering corresponding error processing.
A recording module: and the method is used for recording the highest cell voltage in all the cells.
In the intelligent regulation voltage unit, when the read highest voltage of the battery cell exceeds a set value, the method further comprises the following steps:
a reading module: and reading the actual highest voltage of the cell.
A first judgment module: and the voltage control module is used for judging whether the cell voltage exceeds a set value, entering the voltage reduction module if the cell voltage exceeds the set value, and entering the time delay module if the cell voltage does not exceed the set value.
A voltage reduction module: for reducing the external charging voltage.
A second judging module: and the charging module is used for judging whether the cell voltage is lower than the lowest voltage or not, if so, the charging voltage is set to be the lowest voltage, and otherwise, the charging voltage enters the delay module.
A time delay module: for delayed waiting and return to the read module.
Among the intelligent regulation voltage unit, still include when promoting charging voltage when the actual maximum voltage of electric core that reads is less than the minimum:
a reading module: and reading the actual highest voltage of the cell.
A third judging module: and the voltage boosting module is used for judging whether the cell voltage is lower than the lowest value or not, and if so, the cell voltage enters the voltage boosting module, otherwise, the cell voltage enters the time delay module.
A voltage boost module: for boosting the charging external electrical voltage.
A fourth judging module: and the time delay module is used for judging whether the cell voltage is higher than the highest voltage allowed by the power supply end, if so, setting the charging voltage as the highest voltage allowed by the power supply end, and otherwise, entering the time delay module.
A time delay module: for delayed waiting and return to the read module.
In order to prevent frequent adjustment of the charging voltage, a hysteresis interval needs to be set when the cell voltage is judged, and the corresponding charging voltage is adjusted to be increased or decreased only when the cell voltage exceeds the hysteresis interval; in the intelligent regulation voltage unit, the lowest value is a voltage value slightly lower than a design value of a battery cell.
The invention has the beneficial effects that: 1. according to the high-voltage optimized charging method, due to the fact that the charging voltage is increased, the charging efficiency of the battery can be effectively improved; 2. the high-voltage optimized charging method can monitor the voltage of each battery cell in real time, and can prevent the situation that certain battery cells exceed the nominal voltage during charging due to battery damage; 3. the high-voltage optimized charging method can intelligently increase voltage on software at the same time, and can effectively offset voltage loss caused by line impedance; 4. the high-voltage optimized charging method can enable the charging voltage to be more matched with each battery, give play to the optimal capacity characteristic of the battery, and can avoid some safety problems.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A high-voltage optimized charging method based on an intelligent battery of a notebook computer platform is characterized by comprising the following steps of:
cell voltage monitoring: reading a cell voltage value in the intelligent battery information, and judging the cell voltage condition of the battery according to the cell voltage value; if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling;
intelligently adjusting voltage: intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased.
2. The high-voltage optimized charging method according to claim 1, wherein the cell voltage monitoring step specifically further includes:
step 1: reading the cell voltage through an SMBUS protocol according to the intelligent battery specification, and reading the cell voltage in a fuel gauge chip;
step 2: judging whether the cell voltage is normal, if so, executing the step 3, otherwise, entering corresponding error processing;
and step 3: and recording the highest cell voltage in all the cells.
3. The high-voltage optimized charging method according to claim 1, wherein in the step of intelligently adjusting the voltage, when the read highest cell voltage exceeds a set value, the step of reducing the charging voltage further comprises the steps of:
the first step is as follows: reading the actual highest voltage of the battery cell;
the second step is as follows: judging whether the cell voltage exceeds a set value, if so, executing the next step, and otherwise, entering the fifth step;
the third step: reducing the external charging voltage;
the fourth step: judging whether the charging voltage is lower than the design voltage of the battery, if so, setting the charging voltage as the design voltage of the battery, otherwise, entering the fifth step;
the fifth step: and delaying to wait and returning to execute the first step.
4. The high-voltage optimized charging method according to claim 1, wherein in the step of intelligently adjusting the voltage, when the read actual highest voltage of the battery cell is lower than the lowest value, the step of raising the charging voltage further comprises the following steps:
step S1: reading the actual highest voltage of the battery cell;
step S2: judging whether the cell voltage is lower than the lowest value, if so, executing the next step, otherwise, entering the step S5;
step S3: boosting the charging external electrical voltage;
step S4: judging whether the cell voltage is higher than the highest voltage allowed by the power supply end, if so, setting the charging voltage as the highest voltage allowed by the power supply end, otherwise, entering the step S5;
step S5: the delay waits and returns to execute step S1.
5. The high-voltage optimized charging method according to any one of claims 1 to 4, characterized in that: in order to prevent frequent adjustment of the charging voltage, a hysteresis interval needs to be set when the cell voltage is judged, and the corresponding charging voltage is adjusted to be increased or decreased only when the cell voltage exceeds the hysteresis interval; in the step of intelligently adjusting the voltage, the lowest value is a voltage value slightly lower than a design value of a battery cell.
6. The utility model provides a high pressure optimization charging system based on notebook computer platform intelligent battery which characterized in that includes:
cell voltage monitoring unit: the intelligent battery management system is used for reading the cell voltage value in the intelligent battery information and judging the cell voltage condition of the battery according to the cell voltage value; if the read cell voltage is normal, recording the highest voltage value of the cell, and if the read cell voltage is abnormal, performing exception handling;
the intelligent voltage regulation unit: the intelligent charging device is used for intelligently adjusting the charging voltage according to the read highest voltage value of the battery cell; and when the read actual highest voltage value of the battery cell is lower than the lowest value, the charging voltage is increased.
7. The high voltage optimized charging system of claim 5, wherein the cell voltage monitoring unit further comprises:
cell voltage reading module: the method is used for reading the cell voltage, reading the cell voltage in a fuel gauge chip according to an intelligent battery specification through an SMBUS protocol;
a judging module: the device is used for judging whether the cell voltage is normal or not, if so, entering a recording module, and otherwise, entering corresponding error processing;
a recording module: and the method is used for recording the highest cell voltage in all the cells.
8. The system according to claim 5, wherein the intelligently-regulated voltage unit, when the read highest cell voltage exceeds a set value, further comprises:
a reading module: the method is used for reading the actual highest voltage of the battery cell;
a first judgment module: the voltage control module is used for judging whether the cell voltage exceeds a set value, if so, entering the voltage reduction module, and otherwise, entering the time delay module;
a voltage reduction module: for reducing the external charging voltage;
a second judging module: the delay module is used for judging whether the charging voltage is lower than the design voltage of the battery, if so, the charging voltage is set as the design voltage of the battery, otherwise, the delay module is started;
a time delay module: for delayed waiting and return to the read module.
9. The system according to claim 5, wherein the intelligent regulation voltage unit further comprises, when the read actual highest cell voltage is lower than the lowest cell voltage, the step of raising the charging voltage:
a reading module: the method is used for reading the actual highest voltage of the battery cell;
a third judging module: the voltage boosting module is used for judging whether the cell voltage is lower than the lowest value or not, if so, the cell voltage enters the voltage boosting module, and otherwise, the cell voltage enters the time delay module;
a voltage boost module: for boosting the charging external electrical voltage;
a fourth judging module: the charging module is used for judging whether the cell voltage is higher than the highest voltage allowed by the power supply end, if so, the charging voltage is set to be the highest voltage allowed by the power supply end, and if not, the charging voltage enters the delay module;
a time delay module: for delayed waiting and return to the read module.
10. The high voltage optimized charging system according to any one of claims 5-9, wherein: in order to prevent frequent adjustment of the charging voltage, a hysteresis interval needs to be set when the cell voltage is judged, and the corresponding charging voltage is adjusted to be increased or decreased only when the cell voltage exceeds the hysteresis interval; in the intelligent regulation voltage unit, the lowest value is a voltage value slightly lower than a design value of a battery cell.
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| CN117175754A (en) * | 2023-11-03 | 2023-12-05 | 广东省洛仑兹技术股份有限公司 | Charging method, device and storage medium |
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| CN101345432A (en) * | 2007-07-13 | 2009-01-14 | 三洋电机株式会社 | Method of charging a battery array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117175754A (en) * | 2023-11-03 | 2023-12-05 | 广东省洛仑兹技术股份有限公司 | Charging method, device and storage medium |
| CN117175754B (en) * | 2023-11-03 | 2024-04-12 | 广东省洛仑兹技术股份有限公司 | Charging method, device and storage medium |
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