CN113451670B - Battery charging method, device and medium - Google Patents
Battery charging method, device and medium Download PDFInfo
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- CN113451670B CN113451670B CN202010232070.5A CN202010232070A CN113451670B CN 113451670 B CN113451670 B CN 113451670B CN 202010232070 A CN202010232070 A CN 202010232070A CN 113451670 B CN113451670 B CN 113451670B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The disclosure relates to a battery charging method, a battery charging device and a battery charging medium, and relates to a livestock battery charging technology. The battery charging method provided by the disclosure comprises the following steps: charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met; detecting the voltage of the battery after stopping charging; if the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the stopping recharging voltage, and ending the current recharging link; wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery. According to the technical scheme, the charging cut-off mode is changed, the state of charge of the real-time battery is confirmed through the voltage value which is instantaneously reduced after the charging cut-off, and whether the current charging link is finished is judged. The judgment result of the mode is more accurate, so that the charging effect is improved.
Description
Technical Field
The present disclosure relates to a charging technology for a livestock battery, and in particular, to a battery charging method, a device and a medium.
Background
In the related art, the charging modes of lithium ion batteries are mainly divided into constant-current charging and constant-voltage charging. Constant current charging refers to keeping the current constant in the charging process, and the voltage is continuously increased in the charging process. Constant voltage charging refers to the process of keeping the voltage of the battery cell unchanged in the charging process, and the current is continuously reduced in the charging process. In time distribution, the constant current charging stage takes relatively less time and charges more electric quantity. In the constant voltage charging stage, the charging time is relatively long, the charged electric quantity is relatively small, but the constant voltage charging stage is mainly used for eliminating battery polarization. Cell polarization mainly refers to the phenomenon that the electrode potential deviates from the equilibrium potential, which is mainly caused by material transport and the like. And the polarization of the battery, a polarization potential is generated. This polarization potential gradually decreases as the charging process proceeds. Therefore, the constant voltage charging process consumes a long time, although the amount of charge is small, throughout the charging process.
Aiming at the problem of overlong charging time of a lithium ion battery, in the related art, the charging speed of the battery is generally improved by improving the charging cut-off current or the charging cut-off voltage, and the overall charging time is shortened. For example, for a 4000mAh battery, a battery capacity of 0.02C cut-off is prescribed by national standards, that is, 80mA is a cut-off condition for constant voltage charging. However, in order to increase the charging speed, the influence of the small capacity at the end portion is reduced, and 200mA, or even 400mA, is used as the off condition of the charging. Since the off-current increases, the time of the entire charging process is greatly reduced. For another example, when the charging speed is increased by increasing the cut-off voltage, the overcharge of the battery of the original 4.4V system is set to 4.45V mainly while keeping the battery capacity uniform. Therefore, through the design of overvoltage charging, the applied voltage under polarization is increased, so that the charging speed of a chemical system is increased, and the time of the whole charging process is greatly shortened.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a battery charging method, a device and a medium.
According to a first aspect of embodiments of the present disclosure, there is provided a battery charging method, including:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery.
In the above battery charging method, the detecting the battery voltage after stopping the charging includes:
determining that the time for stopping charging reaches a first set duration;
the battery voltage is detected.
In the above battery charging method, the charging suspension condition may include any one or two of the following:
the charging time reaches a second set duration;
the battery voltage reaches a set voltage value.
In the above battery charging method, the recharging the battery includes:
and when the charge stopping conditions comprise various conditions, recharging the battery, and when the charge stopping conditions corresponding to the charge are met, stopping charging.
In the above battery charging method, the charging the battery according to the preset charging mode includes:
constant voltage charging is carried out on the battery according to a preset maximum charging voltage;
wherein the maximum charging voltage is greater than the voltage threshold.
According to a second aspect of embodiments of the present disclosure, there is provided a battery charging apparatus including:
the first charging module is used for charging the battery according to a preset charging mode, and when a preset charging stopping condition is met, the charging is stopped;
the detection module is used for detecting the voltage of the battery after stopping charging;
the second charging module is used for charging the battery again when the battery voltage is lower than a preset voltage threshold value until the battery voltage after stopping charging reaches or is higher than the voltage threshold value, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery.
In the above battery charging apparatus, the detection module includes:
the time determining submodule is used for determining that the time for stopping charging reaches a first set duration;
and the detection sub-module is used for detecting the battery voltage.
In the above battery charging device, the charging suspension condition may include any one or two of the following:
the charging time reaches a second set duration;
the battery voltage reaches a set voltage value.
In the above battery charging apparatus, the second charging module includes:
and the recharging sub-module is used for recharging the battery when the charging suspension conditions comprise a plurality of conditions, and suspending the charging when the charging suspension conditions corresponding to the charging are met, wherein the corresponding charging suspension conditions are different when the charging is carried out each time.
In the above battery charging apparatus, the first charging module includes:
the constant-voltage charging electronic module is used for carrying out constant-voltage charging on the battery according to a preset maximum charging voltage;
wherein the maximum charging voltage is greater than the voltage threshold.
According to a third aspect of embodiments of the present disclosure, there is provided a battery charging apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium, which when executed by a processor of a terminal device, causes the terminal device to perform a battery charging method, the method comprising:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
according to the technical scheme, the charging cut-off mode is changed, the real-time state of charge of the battery is confirmed through the voltage value which is instantaneously reduced after the charging cut-off, and whether the current charging link is finished is judged. The judgment result of the mode is more accurate, so that the charging effect is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart illustrating a battery charging method according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a method of charging a battery according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a battery charging method according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a battery charging apparatus according to an exemplary embodiment.
Fig. 5 is a block diagram illustrating a battery charging apparatus according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
In the related art, although the overall charging time can be shortened by increasing the charging speed of the battery by increasing the charging off-current, there is a problem in that the battery capacity is lost due to the reduction of the constant-voltage charging time as the end charging current increases. And the larger the value of the termination charge current, the larger the resulting loss of battery capacity. In the way of raising the charge cut-off voltage, however, the chemical system to which the battery belongs does not change itself, i.e. the battery itself does not completely allow for such an over-voltage charging. Therefore, the overvoltage charging method is extremely prone to generate the by-product risk of overvoltage. In addition, the battery design scheme adopts unified charging current conditions, so that there is no way to adjust the charging current according to different battery cells to realize overvoltage charging.
In view of the above, a method, an apparatus and a medium for charging a battery are provided herein.
Fig. 1 is a flowchart illustrating a battery charging method according to an exemplary embodiment. As shown in fig. 1, the method includes the following operations:
in step S101, charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is satisfied;
in step S102, the battery voltage after the suspension of charging is detected;
in step S103, when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery.
The charging modes preset in step S101 may include various charging modes. For example, constant voltage charging may be performed for a set period of time. As another example, constant current charging may be performed according to a set charging current until the battery voltage reaches a set value, or the like. The present embodiment is not particularly limited thereto.
The charge suspension condition preset in step S102 may include one or more conditions for triggering the battery voltage detection operation. The charging operation can be dynamically adjusted according to the rebound voltage along with the continuous increase of the resistance value of the battery in the charging process of the lithium battery, namely, the real-time state of the battery which needs to be fed back in time is considered, so that the charging operation is adjusted, and the charging effect is improved. Therefore, the charging operation can be interrupted by the charging suspension condition, so that the battery voltage can be detected in real time, and the state of charge of the battery can be obtained, so that whether the charging is finished or not can be accurately judged by the real-time state of charge. After stopping the charging in step S102, the battery voltage is detected after a first set period of time is required. The battery voltage thus detected is closer to the true voltage value of the battery, and the state of charge of the battery is thus determined more accurately.
In step S103, it is determined whether to end the current charging link, a voltage threshold preset for the battery is used (i.e., the preset voltage value for stopping charging is considered). The voltage threshold can be determined by voltage testing in a steady state, and corresponding voltage curves of the battery in different SOC states are obtained. Herein, a preset voltage threshold value U end The range of values lies between the rated voltage of the battery and the full charge voltage of the battery (i.e., the value of the battery voltage at which the battery reaches a full charge state). For example, a voltage threshold U preset for a general battery end Than the rated voltage U of the battery 0 High by 0.1-50 millivolts and a voltage threshold U end Is 30-70 millivolts lower than the full charge voltage of the battery. Due to the preset voltage threshold U of the battery end Is related to the system of the battery and the battery capacity. Thus, the voltage thresholds corresponding to the batteries of different battery systems and/or battery capacities are not the same.
The charging mode may include various charging modes when the battery voltage is lower than a preset voltage threshold and the battery is charged again. For example, the charging may be performed in the same manner as in step S101. The charging may be performed in a different manner from the charging in step S101. The present embodiment is not particularly limited thereto.
When the voltage of the battery reaches or exceeds a preset voltage threshold, determining specific operation mainly according to the definition of the current charging link when the current charging link is ended. For example, when the current charging link is the final charging link, the current charging link is finished when the battery voltage reaches or is higher than a preset voltage threshold value, and the whole charging process is finished. For another example, when there are other charging links after the current charging link, only the current charging link is ended when the battery voltage reaches or is higher than a preset voltage threshold. And then, entering other subsequent charging links to carry out charging operation according to the set charging flow of the battery.
It can be seen that the technical scheme of this embodiment provides a new charge cut-off scheme. Compared with the traditional constant voltage charge cut-off scheme, the technical scheme of the embodiment confirms the charge state of the battery through the reduced voltage value after stopping charging (namely the battery voltage after stopping charging, which is detected in real time). And then, whether the operation of the current charging link is finished or not is effectively judged through the charge state and a preset voltage value for stopping charging. By the charge cut-off mode, the time of the charge end can be accurately judged, and therefore the charge effect of the battery is improved.
The embodiment also provides a battery charging method, in which the detecting the battery voltage after stopping charging includes:
determining that the time for stopping charging reaches a first set duration;
the battery voltage is detected.
The determination that the time for stopping charging reaches the first set duration indicates that the battery voltage is detected after waiting for a certain time after stopping charging. This is to take into account that after stopping charging the battery voltage, the battery voltage will drop over time until the battery voltage no longer changes the true voltage of the battery. Therefore, in order to ensure that the detected voltage can more truly reflect the real-time state of the battery, after stopping the charging, the battery voltage can be detected again after waiting for a certain time.
It can be seen that the battery voltage detected in this embodiment is closer to the actual voltage value, i.e., the accuracy of detection is higher. The state of the battery determined according to the battery voltage is closer to the actual situation, and therefore the result of judging whether to finish charging is more reliable.
The present embodiment also provides a battery charging method in which the charging suspension conditions include either one or both of:
the charging time reaches a second set duration;
the battery voltage reaches a set voltage value.
The charging time reaches the second set duration, which may be the duration of continuous charging according to one charging mode or the duration of continuous charging according to a plurality of charging modes.
The battery voltage reaching the set voltage value may be that the battery is charged with a constant current according to the set charging current, and then the battery voltage reaches the set voltage value.
When the charge suspension condition includes both of the above-described conditions, the manner of determining whether the charge suspension condition is satisfied may include a plurality of types. For example, the charging may be suspended when any of the charging suspension conditions is satisfied. The charging may be stopped when both of the charging stop conditions are satisfied.
In addition, as described above, the charge-suspension condition may be used to trigger an operation of detecting the battery voltage in real time, i.e., the charge-suspension condition may directly affect the time at which the battery voltage is detected. Therefore, the second set period of time, the set voltage value, and the like involved in the suspension condition may directly affect the time to detect the battery voltage, the number of times of detection, and the like. In order to avoid that the detection operation is too frequent and the battery effect is affected, the second set duration and the set voltage value may be determined according to the state of the battery. For example, the second set period of time and the set voltage value may be based on a ratio between the current state and the full charge state of the battery. I.e., the current state of the battery reaches a set proportion (e.g., 80%) of the full charge state, the time required for charging can be set to the second set duration. When the current state of the battery reaches a set proportion (e.g., 80%) of the full charge state, the corresponding battery voltage can be set to a set voltage value. In this way, when the charging is suspended according to the charging suspension condition, the real-time state of the battery is relatively close to the full charge state, and the reliability of determining that the battery charging is finished is higher. In addition, when the battery state is relatively close to the full charge state, the charging detection operation is stopped, and the frequency of the detection operation can be obviously controlled.
The embodiment also provides a battery charging method, in which the battery is charged again, including:
when the charge suspension conditions include a plurality of conditions, the battery is charged again, and when the charge suspension conditions corresponding to the charge are satisfied, the charge is suspended.
As described above, the charge suspension condition may include the charge time reaching the second set duration and/or the battery voltage reaching the set voltage value.
And when the battery is charged again, it means that the detection operation of the excessive battery voltage has been performed on the battery. At this time, it can be considered that the state of the battery has been compared with the full charge state, and a detection operation to increase the battery voltage is required. While a charge suspension condition may be used to trigger the operation of detecting battery voltage in real time. Therefore, in the process of recharging the battery again, the difficulty in triggering the battery voltage detection operation can be reduced, so that the number of detection operations is increased.
In each charging process, the corresponding charging suspension conditions may be the same or different. When the corresponding charge suspension conditions are the same in each charging process, the configuration operation can be simplified, that is, the charge suspension conditions are uniformly configured. Thus, in each charging process, whether to stop charging is judged according to the same stopping condition.
When the corresponding charging suspension conditions are different in each charging process, the corresponding charging suspension conditions can be respectively configured for each charging process. The method for setting different charge suspension conditions for each charging process can gradually reduce the difficulty of triggering battery voltage detection operation according to the fact that the charging state in the charging process approaches to a preset voltage value for stopping charging infinitely, so that the battery voltage can be detected in time, and the effect of timely confirming whether the current charging link is finished or not is achieved. For example, when the charge suspension condition includes that the charge time reaches the second set duration, the value of the second set duration in the charge suspension condition corresponding to each charge may be different. From the viewpoint of charging efficiency, it is possible that the charge start time, the remaining amount of the battery is small, and therefore, the time length of the first charging operation can be long. Namely, the value of the second set duration in the charge suspension condition corresponding to the first charge of the battery is a according to the preset charging mode. At this time, the battery is charged for the first time according to a preset charging mode, and when the charging time reaches a, the charging is stopped. If the charge-suspension detection battery voltage is less than the voltage threshold, the charging needs to be performed again. At the time of recharging, the state of the battery is relatively close to the full charge state, and thus, if the recharging is continued for a long time according to the first charging operation, an overcharge phenomenon may occur. Therefore, the time length of the second charging operation can be short. That is, the value of the second set period of time in the charge suspension condition corresponding to the battery being charged again is b, and b < a. At this time, the battery is charged again, and when the charging time reaches b, the charging is stopped. Therefore, the charging duration of each time can be controlled according to different charging suspension conditions, and whether the current charging link is ended or not is timely judged, so that the charging effect is improved.
As another example, the charge suspension conditions may be different for each charge when the charge time reaches the second set duration and the battery voltage reaches the set voltage value. For example, at the time of start of charging, the remaining amount of the battery is small, and therefore, the first charging operation can be controlled by the charging time. Namely, according to a preset charging mode, the charging suspension condition corresponding to the first charging of the battery is that the charging time reaches a second set duration. At this time, the battery is charged for the first time according to a preset charging mode, and when the charging time reaches a second set duration, the charging is stopped. If the charge-suspension detection battery voltage is less than the voltage threshold, the charging needs to be performed again. At the time of recharging, the state of the battery is relatively close to the full charge state, and thus, the charging operation can be controlled by the real-time charging voltage value. That is, the charge suspension condition corresponding to the battery being charged again is that the battery voltage reaches the set voltage value. At this time, the battery is charged again, and when the charging voltage reaches the set voltage value, the charging is stopped. Thus, the charging operation can be controlled by different factors according to different charging suspension conditions, the charge state of the battery is determined, and whether the charging is finished or not is timely judged, so that the charging effect is improved.
The embodiment also provides a battery charging method, in which the battery is charged according to a preset charging mode, including:
constant voltage charging is carried out on the battery according to a preset maximum charging voltage;
wherein the maximum charging voltage is greater than the voltage threshold.
In this embodiment, the maximum charging voltage of the battery may be determined by a voltage test in a steady state, and a corresponding voltage curve of the battery in different SOC states may be obtained. Maximum charging voltage of general battery and rated voltage U of battery 0 The difference between them ranges from 10 to 100 millivolts. It is related to the system of the battery and the battery capacity. I.e., the maximum charge voltages corresponding to the different batteries may be different.
Since the maximum charge voltage of the battery in the present embodiment is greater than the voltage threshold value, which is greater than the rated voltage, the maximum charge voltage of the battery is greater than the rated voltage. Therefore, when constant voltage charging is performed according to the maximum charging voltage, more charges can be charged into the battery in the same time period, so that the charging speed is increased, and the overall charging time is reduced.
Fig. 2 is a flowchart illustrating a method of predicting battery information according to an exemplary embodiment. As shown in fig. 2, the following operations are included:
step S201: determining maximum charging voltage U of battery over Voltage threshold U end 。
In the step, corresponding voltage curves of the battery under different SOC states can be obtained through voltage tests under steady state conditions. Determining a maximum charging voltage U of a battery based on voltage curve calculation over Voltage threshold U end 。
Maximum fillingElectric voltage U over And a voltage threshold U end Are all larger than the rated voltage U of the battery 0 And maximum charging voltage
U over Greater than voltage threshold U end 。
In general, the maximum charging voltage U of a battery over With the rated voltage U of the battery 0 The difference between them ranges from 10 to 100 millivolts. Voltage threshold U of battery end With the rated voltage U of the battery 0 The difference between them ranges from 0.1 to 50 millivolts. It is related to the system of the battery and the battery capacity.
Step S202: and charging according to a preset charging mode.
In this step, the preset charging mode includes a constant voltage charging mode and/or a constant current charging mode. For example, it can be according to U over The battery is charged at a constant voltage. For another example, constant current charging is performed first according to a set current. For another example, constant current charging is performed first according to a set current until the battery voltage reaches a set value, and then constant voltage charging is performed on the battery.
Due to U over >U 0 Thus, according to U over When constant voltage charging is carried out, more charges can be charged for the battery, so that the charging speed is increased, and the overall charging time is reduced.
Step S203: when a preset charge suspension condition is met, suspending charging;
in this embodiment, the charge suspension condition includes that the charge time reaches a set duration T 1 When this occurs, the charging is stopped.
Wherein the duration T 1 Can be preset. To improve the charging efficiency, the duration T may be determined according to the state of the battery 1 . For example, when charging according to the operation in step S202, T may be determined according to the ratio between the current state and the full charge state of the battery 1 . I.e. when the current state of the battery reaches a set proportion (e.g. 80%) of the full charge state, the time required for charging is T 1 。
Step S204: when the time for stopping charging reaches the set time length T 2 At this time, the battery voltage is detected.
Step S205: judging whether the battery voltage reaches or exceeds U end If so, the current charging link is ended, otherwise, step S206 is entered.
In this embodiment, the current charging link is the final charging link, that is, the current charging link is ended, that is, the whole charging operation is ended.
Step S206: recharging the battery for a set time period T 3 When this is the case, the charging is stopped, and the process returns to step S204.
The charging mode used when recharging the battery may be the same as the charging mode in step S202, i.e. still according to U over The battery is charged at a constant voltage. The battery may be charged again in a different manner from the charging in step S202, for example, the battery is charged at a constant voltage in accordance with U (U end <U<U over ) Or constant current charging according to a set current value. The present embodiment is not particularly limited thereto.
When the battery is recharged, the current state of the battery may be already close to the full charge state, so that the recharging time period may be reduced in order to avoid an overcharge condition. I.e. the time period T for which recharging is allowed 3 Less than a time period T 1 。
In the process of stopping the charging in step S204, the actual voltage of the battery is different along with the aging, the process and the difference of the charge states, the voltage of the battery after rebound is quite different, i.e. the detected voltage of the battery is quite different, and the most accurate way of judging whether the battery reaches the full charge is to adopt the open circuit potential in the steady state for judgment, i.e. through the U end And (5) judging.
It can be seen that, in this embodiment, the voltage threshold of the battery is determined according to the capacity of the battery, so as to achieve the charge cut-off of the battery. The method can be suitable for judging the charge cut-off modes under various complex charge modes. In addition, since the voltage threshold of the battery is determined by a single battery, the charge cut-off judgment mode of the battery can be compatible with the difference of different batteries. Thereby improving the charging effect.
Assume that the maximum charge of a certain batteryVoltage U over The preset charging mode is to perform constant voltage charging according to V1. The charge suspension condition is that the charge time reaches a set period. The principle of charging according to the above-described charging method is shown in fig. 3. As can be seen from fig. 3, constant voltage charging is first performed in accordance with V1. When the charging time reaches T1, that is, the charging suspension condition corresponding to the first charging is satisfied, and the charging is suspended at this time. When the time to terminate the charging reaches T2, the battery voltage at this time is detected to drop to V2. Since V2 is smaller than the voltage threshold U of the battery end And therefore the battery needs to be charged again. When recharging, constant voltage charging is still performed according to V1. When the recharging charging time reaches T3, the charging stopping condition corresponding to the second instruction is met, and the charging is stopped. When the time to terminate the charging reaches T2, the battery voltage at this time is detected to drop to V3. Since V3 exceeds the voltage threshold U of the battery end Indicating that the current state of the battery is substantially near a full charge state. The battery is considered to be fully charged, so that the whole charging process is ended. The charging time T1 in the charging suspension condition corresponding to the first charging may be greater than or equal to the charging time T3 in the charging suspension condition corresponding to the second charging.
Fig. 4 is a block diagram illustrating a battery charging apparatus according to an exemplary embodiment. As shown in fig. 4, the apparatus includes a first charging module 41, a detection module 42, and a second charging module 43.
A first charging module 41 configured to charge the battery in a preset charging manner, and to suspend charging when a preset charge suspension condition is satisfied;
a detection module 42 configured to detect a battery voltage after suspension of charging;
a second charging module 43 configured to, when the battery voltage is lower than a preset voltage threshold, recharge the battery until the battery voltage after stopping charging reaches or exceeds the voltage threshold, ending the charging;
wherein the voltage threshold is greater than the rated voltage of the battery.
The embodiment also provides a battery device, in which the detection module includes:
a time determination submodule configured to determine that a time to terminate charging reaches a first set duration;
and a detection sub-module configured to detect a battery voltage.
The present embodiment also provides a battery device in which the charge suspension condition includes either one or both of:
the charging time reaches a second set duration;
the battery voltage reaches a set voltage value.
The embodiment also provides a battery device, in which the second charging module includes:
and a recharging sub-module configured to recharge the battery when the charge suspension conditions include a plurality of conditions, and suspend the charge when the charge suspension conditions corresponding to the charge are satisfied.
The embodiment also provides a battery device, where the first charging module includes:
the constant-voltage charging electronic module is configured to perform constant-voltage charging on the battery according to a preset maximum charging voltage;
wherein the maximum charging voltage is greater than the voltage threshold.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 5 is a block diagram illustrating a battery charging apparatus 500 according to an exemplary embodiment. For example, the apparatus 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, or the like.
Referring to fig. 5, an apparatus 500 may include one or more of the following components: a processing component 502, a memory 504, a power supply component 506, a multimedia component 508, an audio component 510, an input/output (I/O) interface 512, a sensor component 514, and a communication component 516.
The processing component 502 generally controls overall operation of the apparatus 500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 502 can include one or more modules that facilitate interactions between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.
Memory 504 is configured to store various types of data to support operations at device 500. Examples of such data include instructions for any application or method operating on the apparatus 500, contact data, phonebook data, messages, pictures, videos, and the like. The memory 504 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply component 506 provides power to the various components of the device 500. The power components 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 500.
The multimedia component 508 includes a screen between the device 500 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 508 includes a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 500 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 510 is configured to output and/or input audio signals. For example, the audio component 510 includes a Microphone (MIC) configured to receive external audio signals when the device 500 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 504 or transmitted via the communication component 516. In some embodiments, the audio component 510 further comprises a speaker for outputting audio signals.
The I/O interface 512 provides an interface between the processing component 502 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 514 includes one or more sensors for providing status assessment of various aspects of the apparatus 500. For example, the sensor assembly 514 may detect the on/off state of the device 500, the relative positioning of the components, such as the display and keypad of the apparatus 500, the sensor assembly 514 may also detect a change in position of the apparatus 500 or one component of the apparatus 500, the presence or absence of user contact with the apparatus 500, the orientation or acceleration/deceleration of the apparatus 500, and a change in temperature of the apparatus 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 514 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 516 is configured to facilitate communication between the apparatus 500 and other devices in a wired or wireless manner. The apparatus 500 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 504, including instructions executable by processor 520 of apparatus 500 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
A non-transitory computer readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform a battery charging method comprising:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the voltage of the battery is lower than a preset voltage threshold, recharging the battery until the voltage of the battery after the charging is stopped reaches or is higher than the voltage threshold, and ending the charging;
wherein the voltage threshold is greater than the rated voltage of the battery.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A battery charging method, comprising:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery;
the voltage threshold is determined by a voltage test under a steady state condition, and corresponding voltage curves of the battery under different SOC states are obtained;
the charge suspension condition is used for triggering the operation of detecting the battery voltage after suspension of charging; the charge suspension condition includes: the charging time reaches a second set duration, and/or the battery voltage reaches a set voltage value; the second set duration and the set voltage value are determined according to the battery state;
the recharging of the battery includes: different charging suspension conditions are respectively set for each recharging process, so that the triggering difficulty of detecting the battery voltage after suspension of charging is gradually reduced along with the increase of the times of recharging processes, and the times of detecting operation are increased.
2. The method of claim 1, wherein detecting the battery voltage after discontinuing charging comprises:
determining that the time for stopping charging reaches a first set duration;
the battery voltage is detected.
3. The method of claim 1 or 2, wherein recharging the battery comprises:
and when the charge stopping conditions comprise various conditions, recharging the battery, and when the charge stopping conditions corresponding to the charge are met, stopping charging.
4. The method according to claim 1 or 2, wherein said charging the battery according to a preset charging mode comprises:
constant voltage charging is carried out on the battery according to a preset maximum charging voltage;
wherein the maximum charging voltage is greater than the voltage threshold.
5. A battery charging apparatus, comprising:
the first charging module is used for charging the battery according to a preset charging mode, and when a preset charging stopping condition is met, the charging is stopped;
the detection module is used for detecting the voltage of the battery after stopping charging;
the second charging module is used for charging the battery again when the battery voltage is lower than a preset voltage threshold value until the battery voltage after stopping charging reaches or is higher than the voltage threshold value, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery;
the voltage threshold is determined by a voltage test under a steady state condition, and corresponding voltage curves of the battery under different SOC states are obtained;
the charge suspension condition is used for triggering the operation of detecting the battery voltage after suspension of charging; the charge suspension condition includes: the charging time reaches a second set duration, and/or the battery voltage reaches a set voltage value; the second set duration and the set voltage value are determined according to the battery state;
the recharging of the battery includes: different charging suspension conditions are respectively set for each recharging process, so that the triggering difficulty of detecting the battery voltage after suspension of charging is gradually reduced along with the increase of the times of recharging processes, and the times of detecting operation are increased.
6. The apparatus of claim 5, wherein the detection module comprises:
the time determining submodule is used for determining that the time for stopping charging reaches a first set duration;
and the detection sub-module is used for detecting the battery voltage.
7. The apparatus of claim 5 or 6, wherein the second charging module comprises:
and the recharging sub-module is used for recharging the battery when the charging suspension conditions comprise a plurality of conditions, and suspending charging when the charging suspension conditions corresponding to the charging are met.
8. The apparatus of claim 5 or 6, wherein the first charging module comprises:
the constant-voltage charging electronic module is used for carrying out constant-voltage charging on the battery according to a preset maximum charging voltage;
wherein the maximum charging voltage is greater than the voltage threshold.
9. A battery charging apparatus, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery;
the voltage threshold is determined by a voltage test under a steady state condition, and corresponding voltage curves of the battery under different SOC states are obtained;
the charge suspension condition is used for triggering the operation of detecting the battery voltage after suspension of charging; the charge suspension condition includes: the charging time reaches a second set duration, and/or the battery voltage reaches a set voltage value; the second set duration and the set voltage value are determined according to the battery state;
the recharging of the battery includes: different charging suspension conditions are respectively set for each recharging process, so that the triggering difficulty of detecting the battery voltage after suspension of charging is gradually reduced along with the increase of the times of recharging processes, and the times of detecting operation are increased.
10. A non-transitory computer readable storage medium, which when executed by a processor of a terminal device, causes the terminal device to perform a battery charging method, the method comprising:
charging the battery according to a preset charging mode, and stopping charging when a preset charging stopping condition is met;
detecting the voltage of the battery after stopping charging;
when the battery voltage is lower than a preset voltage threshold, recharging the battery until the battery voltage after stopping recharging reaches or is higher than the voltage threshold, and ending the current charging link;
wherein the voltage threshold is greater than the rated voltage of the battery and less than the full charge voltage of the battery;
the voltage threshold is determined by a voltage test under a steady state condition, and corresponding voltage curves of the battery under different SOC states are obtained;
the charge suspension condition is used for triggering the operation of detecting the battery voltage after suspension of charging; the charge suspension condition includes: the charging time reaches a second set duration, and/or the battery voltage reaches a set voltage value; the second set duration and the set voltage value are determined according to the battery state;
the recharging of the battery includes: different charging suspension conditions are respectively set for each recharging process, so that the triggering difficulty of detecting the battery voltage after suspension of charging is gradually reduced along with the increase of the times of recharging processes, and the times of detecting operation are increased.
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