CN112909366B - Charging method and device, terminal equipment and storage medium - Google Patents
Charging method and device, terminal equipment and storage medium Download PDFInfo
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- CN112909366B CN112909366B CN201911223191.7A CN201911223191A CN112909366B CN 112909366 B CN112909366 B CN 112909366B CN 201911223191 A CN201911223191 A CN 201911223191A CN 112909366 B CN112909366 B CN 112909366B
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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
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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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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Abstract
The disclosure relates to a charging method and device, a terminal device and a storage medium. The method comprises the following steps: determining the maximum charging current in the current charging stage, and carrying out constant current charging by using the maximum charging current; after the charging time of the constant-current charging reaches a first switching condition, switching to constant-voltage charging; after the charging time of the constant-voltage charging reaches a second switching condition, switching to constant-current charging; and entering the next charging stage when the charging voltage of the constant-voltage charging reaches the stage cut-off voltage of the current charging stage. Through the embodiment of the disclosure, the terminal equipment performs constant current charging with the maximum charging current, so that the charging time can be shortened, and the charging speed is increased.
Description
Technical Field
The present disclosure relates to the field of charging technologies, and in particular, to a charging method and apparatus, a terminal device, and a storage medium.
Background
With the continuous development of terminal devices such as mobile phones, the performance of the mobile phones is continuously improved, and the size of the screen of the mobile phone is continuously increased, such as the existing surround screen mobile phone, so that the power consumption of the mobile phone is continuously increased, and the battery capacity and the charging speed of the mobile phone are challenged. The charging speed is increased by increasing the charging current, which is often accompanied by the increase of heat generated by the battery, so that the charging speed is increased on the premise that the charging temperature meets the requirement.
Disclosure of Invention
The disclosure provides a charging method and device, a terminal device and a storage medium.
According to a first aspect of the embodiments of the present disclosure, there is provided a charging method, including:
determining the maximum charging current in the current charging stage, and performing constant current charging by using the maximum charging current;
after the charging time of the constant-current charging reaches a first switching condition, switching to constant-voltage charging;
after the charging time of the constant-voltage charging reaches a second switching condition, switching to constant-current charging;
and entering the next charging stage when the charging voltage of the constant-voltage charging reaches the stage cut-off voltage of the current charging stage.
In one embodiment, the charging duration of the constant current charging reaches a first switching condition, which includes:
and when the charging temperature is within a first temperature range, if the charging time of the nth constant current charging in the current charging stage reaches the nth constant current time, determining that the first switching condition is reached, wherein n is a positive integer.
In one embodiment, the charging duration in the constant current charging reaches a first switching condition, which includes:
when the charging temperature is within a second temperature range and the switching frequency between the constant current charging and the constant voltage charging in the current charging stage is smaller than a frequency threshold value, if the charging time of the nth constant current charging in the current charging stage reaches the (n + x) th constant current time, determining that the first switching condition is reached, wherein n is a positive integer; x is a positive integer; the n + x constant current duration is less than the n constant current duration;
the temperature of the second temperature range is higher than the temperature of the first temperature range.
In one embodiment, the charging duration of the constant current charging reaches a first switching condition, which includes:
when the switching frequency between the constant current charging and the constant voltage charging in the current charging stage is equal to or greater than a frequency threshold value, if the charging time of the constant current charging of the nth time in the current charging stage reaches the (n + y) th constant current time, determining that the first switching condition is reached, wherein n is a positive integer; y is a positive integer greater than x; and the n + y constant current time length is less than the n + x constant current time length.
In one embodiment, the charging period of the constant voltage charging reaches the second switching condition, which includes:
and when the charging temperature is within the first temperature range, if the charging time of the constant voltage charging reaches the mth constant voltage time in the current charging stage for the mth time, determining that the second switching condition is reached, wherein m is a positive integer.
In one embodiment, the charging period of the constant-voltage charging reaches the second switching condition, which includes:
when the charging temperature is within the second temperature range and the switching frequency between the constant-current charging and the constant-voltage charging in the current charging stage is smaller than a frequency threshold, if the charging duration of the mth constant-voltage charging in the current charging stage reaches the (m + s) th constant-voltage duration, determining that the second switching condition is reached, wherein m is a positive integer; s is a positive integer; the mth + s constant voltage time period is longer than the mth constant voltage time period.
In one embodiment, the charging period of the constant-voltage charging reaches the second switching condition, which includes:
when the switching frequency between the constant-current charging and the constant-voltage charging in the current charging stage is equal to or greater than a frequency threshold value, if the charging time of the mth constant-voltage charging in the current charging stage reaches the mth + pth constant-voltage time, determining that the second switching condition is reached, wherein m is a positive integer; p is a positive integer greater than s; the m + p constant voltage time length is longer than the m + s constant voltage time length.
In one embodiment, the method further comprises:
and when the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal equipment and the charging current reaches the cut-off current of the terminal equipment, stopping charging the terminal equipment.
According to a second aspect of embodiments of the present disclosure, there is provided a charging device, the device comprising:
the charging module is configured to determine the maximum charging current in the current charging stage and perform constant current charging at the maximum charging current;
the first switching module is configured to switch to constant-voltage charging after the charging time of the constant-current charging reaches a first switching condition;
the second switching module is configured to switch to constant-current charging after the charging duration of the constant-voltage charging reaches a second switching condition;
and the entering module is configured to enter the next charging stage when the charging voltage of the constant-voltage charging reaches the stage cut-off voltage of the current charging stage.
In an embodiment, the first switching module is specifically configured to determine that the first switching condition is reached if the charging duration of the nth constant current charging in the current charging stage reaches an nth constant current duration when the charging temperature is within a first temperature range, where n is a positive integer.
In an embodiment, the first switching module is specifically configured to determine that the first switching condition is reached if a charging duration of the nth constant current charging in the current charging stage reaches an n + x constant current duration when the charging temperature is within a second temperature range and a switching number between the constant current charging and the constant voltage charging in the current charging stage is less than a number threshold, where n is a positive integer; x is a positive integer; the n + x constant current duration is less than the n constant current duration;
the temperature of the second temperature range is higher than the temperature of the first temperature range.
In an embodiment, the first switching module is specifically configured to determine that the first switching condition is reached if a charging duration of an nth constant current charging in the current charging phase reaches an n + y constant current duration when a switching number between the constant current charging and the constant voltage charging in the current charging phase is equal to or greater than a number threshold; y is a positive integer greater than x; and the n + y constant current time length is less than the n + x constant current time length.
In an embodiment, the second switching module is specifically configured to determine that the second switching condition is reached if the charging duration of the mth constant voltage charging in the current charging stage reaches the mth constant voltage duration when the charging temperature is within the first temperature range, where m is a positive integer.
In an embodiment, the second switching module is specifically configured to determine that the second switching condition is reached if a charging duration of the mth constant voltage charging in the current charging stage reaches an m + s constant voltage duration when the charging temperature is within the second temperature range and a switching number between the constant current charging and the constant voltage charging in the current charging stage is less than a threshold number of times, where m is a positive integer; s is a positive integer; the mth + s constant voltage time period is greater than the mth constant voltage time period.
In an embodiment, the second switching module is specifically configured to determine that the second switching condition is reached if a charging duration of an mth constant voltage charge in the current charging stage reaches an m + pth constant voltage duration when a number of switching times between the constant current charge and the constant voltage charge in the current charging stage is equal to or greater than a time threshold value, where m is a positive integer; p is a positive integer greater than s; the (m + p) th constant voltage duration is longer than the (m + s) th constant voltage duration.
In one embodiment, the charging device further comprises:
and the charging stopping module is configured to stop charging the terminal equipment when the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal equipment and the charging current reaches the cut-off current of the terminal equipment.
According to a third aspect of the embodiments of the present disclosure, there is provided a terminal device, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the charging method as described in the first aspect above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a storage medium including:
the instructions in said storage medium, when executed by a processor of a terminal device, enable the terminal device to perform the charging method as described in the first aspect above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the scheme provided by the embodiment of the disclosure, when the terminal equipment is charged, the terminal equipment is divided into a plurality of charging stages, each charging stage is provided with a switching condition for performing constant current charging and constant voltage charging, and the constant current charging and the constant voltage charging can be switched when the switching condition is met, so that the switching between fine-grained constant current charging and constant voltage charging is realized. For example, after the charging period of the constant-current charging reaches the first switching condition, switching is made to the constant-voltage charging; after the charging duration of the constant-voltage charging reaches the second switching condition, the constant-current charging is switched, that is, the terminal device can switch between the constant-voltage charging and the constant-current charging by judging whether the first switching condition or the second switching condition is reached.
Therefore, on the first hand, the terminal equipment can perform constant current charging with the maximum charging current in different charging stages in the whole charging period of the battery, so that the charging time can be shortened, and the charging speed can be increased; in the second aspect, constant-current charging is switched to constant-voltage charging, so that the charging current of the terminal equipment can be reduced, the polarization phenomenon is further reduced, and the charging speed of the terminal equipment is increased; in a third aspect, the embodiment of the disclosure can perform switching between constant current charging and constant voltage charging in different charging stages, so that switching between constant current charging and constant voltage charging can be determined based on different charging durations in different charging stages, the constant voltage charging durations in different stages can be adjusted more accurately, polarization phenomenon can be reduced better, and the charging speed of the terminal device can be further 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 first flowchart of a charging method according to an embodiment of the disclosure.
Fig. 2 is a flowchart of a charging method according to an embodiment of the disclosure.
Fig. 3 is a diagram illustrating a charging device according to an exemplary embodiment.
Fig. 4 is a diagram of a charging device according to an exemplary embodiment.
Fig. 5 is a block diagram of an entity of a terminal device according to an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a first flowchart of a charging method shown in an embodiment of the present disclosure, and as shown in fig. 1, the method applied to the terminal device includes the following steps:
s101, determining the maximum charging current in the current charging stage, and performing constant current charging by using the maximum charging current;
s102, after the charging time of constant current charging reaches a first switching condition, switching to constant voltage charging;
s103, switching to constant-current charging after the charging time of the constant-voltage charging reaches a second switching condition;
and S104, entering the next charging stage when the charging voltage of the constant voltage charging reaches the cut-off voltage of the current charging stage.
The terminal equipment is connected with charging equipment, and the charging equipment charges the terminal equipment. The charging device includes, but is not limited to, a wired charger or a wireless charger. This terminal equipment can be wearable electronic equipment and mobile terminal, and this mobile terminal includes cell-phone, notebook and panel computer, and this wearable electronic equipment includes the intelligent wrist-watch, and this disclosed embodiment does not do the restriction.
In the embodiment of the disclosure, different charging stages are configured for charging the battery of the terminal device, and the maximum charging current and the stage cut-off voltage corresponding to the different charging stages are different. For example, the maximum charging current of the current stage is smaller than the maximum charging current of the next stage; the phase cut-off voltage of the current phase is smaller than the phase cut-off voltage of the next phase.
It should be noted that the current charging phase is any one of charging phases in a battery charging process of the terminal device.
In the embodiment of the disclosure, after the charging duration of the constant-current charging reaches the first switching condition, the constant-voltage charging is switched; and after the charging time length of the constant voltage charging reaches a second switching condition, switching to constant current charging. That is, the terminal device can realize switching between constant voltage charging and constant current charging by determining whether the first switching condition or the second switching condition is reached. It should be noted that the switching of the terminal device between the constant-current charging and the constant-voltage charging can be switched multiple times within one charging period.
The constant current charging is performed such that the charging current is maintained constant during charging, and the constant voltage charging is performed such that the charging voltage is maintained constant during charging. Due to the limited power capacity and/or internal resistance of the terminal equipment, during constant-current charging, the charging current of the terminal equipment is kept constant but the charging voltage is gradually increased; in the constant voltage charging, the charging voltage of the terminal device is maintained constant but the charging current is gradually reduced.
The first switching condition is reached only when at least one of the charging time length of the constant current charging, the charging temperature of the constant current charging, the constant current charging frequency and the charging time length of the constant current charging meets a certain condition;
the second switching condition is not limited to be reached when at least one of the charging temperature during the constant voltage charging, the number of times of the constant voltage charging, and the charging duration during the constant voltage charging needs to satisfy a certain condition.
In the conventional art, the charging is performed directly at the maximum charging current, and the charging current is reduced directly after the temperature reaches the upper limit value. Because the existing terminal equipment is always charged with the maximum charging current, the internal polarization of the battery is increased, and the charging time is further prolonged.
Based on this, the embodiment of the present disclosure provides that, in the current charging stage, the maximum charging current is used for performing the constant current charging, and then the constant voltage charging is switched to the constant current charging, so that, on one hand, the terminal device performs the constant current charging with the maximum charging current, which can shorten the charging duration and improve the charging speed, and on the other hand, the constant current charging is switched to the constant voltage charging, which can reduce the charging current of the terminal device, thereby reducing the polarization phenomenon and improving the charging speed of the terminal device.
In one embodiment, the charging duration of the constant current charging reaches a first switching condition, which includes:
when the charging temperature is within a first temperature range, if the charging time of the nth constant current charging in the current charging stage reaches the nth constant current time, determining that the first switching condition is reached, wherein n is a positive integer.
In the embodiment of the disclosure, the terminal device is provided with an early warning temperature, and the first temperature range can be set to be smaller than the early warning temperature. That is, embodiments of the present disclosure may set the first temperature range according to the warning temperature, for example, when the warning temperature is 38 degrees celsius (° c), the first temperature range may be set to be 37 ℃ to 38 ℃; when the early warning temperature is 37 ℃, the first temperature range may be set to be 36 ℃ to 37 ℃, and the disclosed embodiment is not limited.
The nth constant current time period may be set according to actual needs, for example, may be set at 3 minutes or 5 minutes, and the embodiment of the present disclosure is not limited.
It should be noted that the terminal device is provided with a constant current time length and a constant voltage time length corresponding to the charging temperature within the first temperature range. Because the charging temperature of the terminal equipment is lower than the early warning temperature, the temperature influence of the terminal equipment on the terminal equipment due to the fact that the terminal equipment is charged with the maximum charging current can not affect the perception of a user, and therefore the constant-current time length can be set to be far longer than the constant-voltage time length when the constant-current time length and the constant-voltage time length corresponding to the first temperature range are set.
The constant current time duration is the time duration of constant current charging of the terminal equipment, and the constant voltage time duration is the time duration of constant voltage charging of the terminal equipment.
For example, the constant current period may be set at 5 minutes, and the constant voltage period may be set at 0.5 minutes.
According to the embodiment of the disclosure, when the charging temperature is within the first temperature range, the constant-current time is far longer than the constant-voltage time, the charging time of the terminal device can be shortened by increasing the time for constant-current charging by the maximum charging current, and the charging speed is increased. In addition, the constant-current charging is switched to the constant-voltage charging after the first switching condition is met, so that the charging current of the terminal equipment can be reduced, the polarization phenomenon is reduced, and the charging speed of the terminal equipment is increased.
In one embodiment, the charging duration of the constant current charging reaches a first switching condition, which includes:
when the charging temperature is within a second temperature range and the switching frequency between constant-current charging and constant-voltage charging in the current charging stage is smaller than a frequency threshold, if the charging time of the nth constant-current charging in the current charging stage reaches the (n + x) th constant-current time, determining that the first switching condition is reached, wherein n is a positive integer; x is a positive integer; the n + x constant current duration is less than the n constant current duration;
the temperature of the second temperature range is higher than the temperature of the first temperature range.
The number threshold may be set according to actual needs, for example, the number threshold may be set to 5 times or 8 times, and the embodiment of the present disclosure is not limited.
The above x may also be set according to actual needs, for example, x may take a value of 1 or 2, and the embodiment of the present disclosure is not limited.
In the embodiment of the disclosure, the nth + x constant current duration is less than the nth constant current duration, and the nth + x constant current duration may be set according to the nth constant current duration, for example, when the nth constant current duration is set to 5 minutes, the nth + x constant current duration may be set to 4 minutes; when the nth constant current time period is set to 4 minutes, the nth + x constant current time period may be set to 3 minutes, which is not limited in the embodiment of the present disclosure.
It should be noted that the terminal device is provided with a plurality of constant current durations, and the plurality of constant current durations may be sorted from large to small. When different constant current time lengths are selected for constant current charging, the constant current time lengths can be selected in sequence from a plurality of constant current time length sequences.
In the embodiment of the disclosure, the terminal device is provided with the early warning temperature, the first temperature range can be set to be smaller than the early warning temperature, and the second temperature range can be set to be larger than or equal to the early warning temperature. That is, the embodiments of the present disclosure may set the second temperature range according to the warning temperature, for example, when the warning temperature is 38 degrees celsius (° c), the second temperature range may be set to 38 ℃ to 39 ℃; when the early warning temperature is 37 ℃, the second temperature range may be set to be 37 ℃ to 38 ℃, and the disclosed embodiment is not limited.
It should be noted that the terminal device is provided with a constant current duration corresponding to the charging temperature within the second temperature range. Because terminal equipment's charging temperature is more than or equal to the early warning temperature, when terminal equipment charges with the biggest charging current, probably make terminal equipment produce a large amount of heats to make terminal equipment's temperature rise, if continue to charge with the biggest charging current in this stage and can make terminal equipment's the internal resistance that charges also produce the heat dissipation that charges, then can make terminal equipment's temperature further promote, lead to the user perception to terminal equipment overheated, perhaps, because overheated performance that leads to terminal equipment descends or the phenomenon of abnormality.
Therefore, when the constant current duration corresponding to the second temperature range is set, the constant current duration corresponding to the second temperature range needs to be set to be smaller than the constant current duration corresponding to the first temperature range, so that the duration of charging the terminal device with the maximum charging current is shortened, the terminal device is convenient to switch to constant voltage charging in time, the current charging current of the terminal device is reduced, and the current charging temperature of the terminal device is reduced.
So, it is long through shortening the constant current in the second temperature range, can reduce because of continuing to make terminal equipment's the condition that the temperature further promoted with the charging current of maximum for terminal equipment can in time reduce current charging temperature, and then makes terminal equipment can not be overheated and influence user's perception and influence terminal equipment's performance.
In one embodiment, the charging duration of the constant current charging reaches a first switching condition, which includes:
the charging time of the constant current charging reaches a first switching condition, which comprises the following steps:
when the switching times between constant current charging and constant voltage charging in the current charging stage are equal to or larger than a time threshold, if the charging time of the nth constant current charging in the current charging stage reaches the (n + y) th constant current time, determining that the first switching condition is reached, wherein n is a positive integer; y is a positive integer greater than x; the n + y constant current duration is less than the n + x constant current duration.
In the embodiment of the present disclosure, when the number of times of switching between the constant current charging and the constant voltage charging in the current charging stage is equal to or greater than the number threshold, the terminal device shortens the constant current duration from the nth constant current duration to the nth + x constant current duration, which may cause the charging temperature of the terminal device to be higher, and still affect the user perception and the performance of the terminal device, so that it is necessary to continue to shorten the constant current duration, so that the constant current duration is shortened from the nth + x constant current duration to the nth + y constant current duration.
It should be noted that, after the terminal device shortens the constant current duration from the nth + x constant current duration to the nth + y constant current duration, if the charging temperature of the terminal device detected when the terminal device is charged with the maximum charging current still affects the user perception and the performance of the terminal device, the terminal device will continue to shorten the constant current duration, so that the charging temperature when the terminal device is charged with the maximum charging current does not affect the user perception and the performance of the terminal device.
Therefore, by increasing the charging time threshold, the terminal equipment can be switched to constant voltage charging in time under the condition that the constant current charging temperature is too high, so that the current charging temperature can be reduced in time by the terminal equipment, and the terminal equipment cannot be overheated to influence the perception of a user and the performance of the terminal equipment.
In one embodiment, the charging period of the constant-voltage charging reaches the second switching condition, including:
and when the charging temperature is within the first temperature range, if the charging time of the mth constant voltage charging in the current charging stage reaches the mth constant voltage time, determining that the second switching condition is reached, wherein m is a positive integer.
The mth constant voltage time period may be set according to actual needs, for example, may be set at 0.3 minute or 0.5 minute, and the embodiment of the present disclosure is not limited.
In the embodiment of the disclosure, the terminal device is provided with a constant current time length and a constant voltage time length corresponding to the charging temperature in the first temperature range. Because the charging temperature of the terminal equipment is lower than the early warning temperature, the influence of the maximum charging current on the temperature of the terminal equipment by the terminal equipment may not influence the perception of a user, and therefore, the constant-current time length can be set to be far longer than the constant-voltage time length when the constant-current time length and the constant-voltage time length corresponding to each other in the first temperature range are set.
Therefore, the charging time of the terminal equipment with the maximum charging current can be prolonged, and the charging speed is further improved. Meanwhile, after the constant-current charging time reaches the constant-current time, the constant-voltage charging is switched, the charging current of the terminal equipment can be reduced in the constant-voltage charging process, the polarization phenomenon is further reduced, and the charging speed of the terminal equipment is improved.
In one embodiment, the charging period of the constant voltage charging reaches the second switching condition, including:
when the charging temperature is within a second temperature range and the switching frequency between constant-current charging and constant-voltage charging in the current charging stage is smaller than a frequency threshold, if the charging time of the mth constant-voltage charging in the current charging stage reaches the mth + s constant-voltage time, determining that a second switching condition is reached, wherein m is a positive integer; s is a positive integer; the m + s constant voltage period is greater than the m constant voltage period.
It should be noted that, the mth + s constant voltage duration is longer than the mth constant voltage duration, the mth + s constant voltage duration may be set according to the mth constant voltage duration, for example, when the mth constant voltage duration is set to 0.5 minute, the mth + s constant voltage duration may be set to 1 minute; when the duration is set to 0.3 minutes at the mth constant voltage, the (m + s) th constant voltage duration may be set to 0.8 minutes, and the embodiment of the present disclosure is not limited.
Illustratively, s may take a value of 1 or 2, and the embodiments of the present disclosure are not limited.
In the embodiment of the present disclosure, the terminal device is provided with a plurality of constant voltage durations, and the plurality of constant voltage durations may be sorted from small to large. When different constant voltage durations are selected for constant voltage charging, the constant voltage durations can be sequentially selected from a plurality of constant voltage duration ranks.
When the terminal equipment is charged at constant voltage, the charging current of the terminal equipment can be continuously reduced, and the reduction of the charging current of the terminal equipment can reduce the heat generated by the terminal equipment, so that the temperature of the terminal equipment is reduced. Therefore, when the corresponding constant voltage duration in the second temperature range is set, the corresponding constant voltage duration in the second temperature range needs to be set to be greater than the corresponding constant voltage duration in the first temperature range, so that the charging current can be further reduced by prolonging the constant voltage charging duration, and the current charging temperature of the terminal equipment can be further reduced; meanwhile, the polarization phenomenon can be further reduced by prolonging the constant voltage charging time, and the charging speed of the terminal equipment is improved.
In one embodiment, the charging period of the constant voltage charging reaches the second switching condition, including:
when the switching times between constant-current charging and constant-voltage charging in the current charging stage are equal to or larger than a time threshold, if the charging time of the mth constant-voltage charging in the current charging stage reaches the (m + p) th constant-voltage charging time, determining that a second switching condition is reached, wherein m is a positive integer; p is a positive integer greater than s; the m + p th constant voltage time period is longer than the m + s th constant voltage time period.
In the embodiment of the present disclosure, when the number of times of switching between the constant-current charging and the constant-voltage charging in the current charging stage is equal to or greater than the number threshold, the terminal device may extend the constant-voltage duration from the mth constant-voltage duration to the mth + s constant-voltage duration, which may cause the charging temperature of the terminal device to be still higher, and still affect the user perception and the performance of the terminal device.
It should be noted that, after the terminal device extends the constant voltage duration from the m + s constant voltage duration to the m + p constant voltage duration, if the charging temperature of the terminal device detected when the terminal device is charged with the maximum charging current still affects the user perception and the performance of the terminal device, the terminal device continues to extend the constant voltage duration, so that the charging temperature when the terminal device is charged with the maximum charging current does not affect the user perception and the performance of the terminal device.
Therefore, by increasing the threshold value of the charging times, the charging current can be further reduced by prolonging the constant voltage time when the constant current charging temperature is too high, so that the current charging temperature can be further reduced by the terminal equipment, and the terminal equipment cannot be overheated to influence the perception of a user and the performance of the terminal equipment.
In one embodiment, as shown in fig. 2, the method further comprises:
and S105, stopping charging the terminal equipment when the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal equipment and the charging current reaches the cut-off current of the terminal equipment.
For example, when specifically charging a terminal device, the method may include: when the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal device, the constant voltage charging is performed with the cut-off voltage of the terminal device, and when the charging current after the constant voltage charging with the charging cut-off voltage of the terminal device reaches the charging cut-off current of the terminal device, it is determined that the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal device and the charging current reaches the cut-off current of the terminal device.
In another embodiment, the method further comprises: after entering the next charging stage, determining the maximum charging current in the next charging stage, and carrying out constant current charging on the maximum charging current in the next charging stage;
when the charging voltage after constant current charging is carried out at the maximum charging current of the next charging stage reaches the charging cut-off voltage of the terminal equipment, constant voltage charging is carried out at the charging cut-off voltage of the terminal equipment;
when the charging current after constant voltage charging at the charging cutoff voltage of the terminal device reaches the charging cutoff current of the terminal device, the terminal device is stopped from being charged.
In the embodiment of the disclosure, after entering the next charging stage, the terminal device switches to constant voltage charging after the charging duration of the constant current charging reaches the first switching condition, as in the previous charging stage; after the charging period of the constant-voltage charging reaches the second switching condition, the constant-current charging is switched until the charging voltage of the constant-voltage charging reaches the phase cut-off voltage position of the next phase of the charging phase.
That is to say, the terminal device performs the same constant current charging with the maximum charging current of the current stage in each charging stage, switches to the constant voltage charging after the switching condition is met, and further switches between the constant voltage charging and the constant current charging in the current charging stage until the current charging voltage of the terminal device reaches the cut-off charging voltage of the terminal device.
The charging is carried out by the maximum charging current at each charging stage of the terminal equipment, the charging temperature can be effectively controlled within a reasonable range by adjusting the constant-current charging time and the constant-voltage charging time in time, the polarization phenomenon can be effectively eliminated by repeated constant-voltage charging, the large-current charging time is prolonged, the charging speed is increased, and meanwhile, the temperature rise caused by polarization internal resistance can be reduced by repeated constant-voltage charging, and the charging temperature rise is reduced.
The disclosed embodiments also provide the following examples:
the terminal equipment of the embodiment of the disclosure at least comprises a constant-current constant-voltage control circuit and a temperature detection system. The constant-current constant-voltage control circuit is used for switching the charging mode of the terminal equipment, such as switching from constant-voltage charging to constant-current charging or switching from constant-current charging to constant-voltage charging; the temperature detection system is used for detecting the charging temperature of the terminal equipment, so that the charging temperature of the terminal equipment in the charging process can be monitored in time.
Before charging, the maximum charging current and the cut-off voltage of different charging stages can be preset in the embodiment of the disclosure. In the charging process, the charging temperature of the terminal equipment is in a first temperature range, the terminal equipment performs constant current charging at the maximum charging current in the current charging stage, and after the nth constant current duration of the constant current charging, the constant current charging is switched to constant voltage charging; after the mth constant voltage duration of the constant voltage charging, switching to constant current charging, repeatedly carrying out constant current and constant voltage charging, when the cutoff voltage of the current charging stage is reached, continuously carrying out the constant voltage charging to enter the next charging stage, and after the nth constant current duration of the constant current charging is carried out by the maximum charging current of the next charging stage in the next charging stage, switching to the constant voltage charging; and after the m constant voltage duration of the constant voltage charging, switching to constant current charging.
When the charging temperature of the terminal equipment is in a second temperature range, namely the charging temperature of the terminal equipment exceeds the early warning temperature, the terminal equipment prolongs the constant voltage duration and shortens the constant current duration; and if the switching times between the constant-current charging and the constant-voltage charging exceed the time threshold, continuing to prolong the constant-voltage time and shorten the constant-current time, repeating the steps until the charging temperature of the terminal equipment is lower than the first temperature range or the charging voltage of the terminal equipment reaches the cut-off voltage of the current charging stage, and entering the next charging stage.
Illustratively, setting constant-current charging time periods as t1, t2, t3 and t4, t1 < t2 < t3 < t4, constant-voltage charging time periods as a1, a2, a3 and a4, a4 < a3 < a2 < a1, switching time thresholds between constant-current charging and constant-voltage charging as N1 and N2, and N1 < N2; the method for realizing the charging of the terminal equipment comprises the following steps:
A. determining a maximum charging current at a current charging stage;
B. and when the charging temperature of the terminal equipment is in a first temperature range, performing constant current charging at the maximum charging current of the current charging stage. And when the constant-current charging time reaches t1, switching to constant-voltage charging. Recording the charging voltage after constant current charging, and carrying out constant voltage charging by using the charging voltage; and when the constant voltage charging time reaches a1, switching to the constant current charging with the maximum charging current in the current charging stage. And when the constant-current charging time reaches t1, switching to constant-voltage charging. Recording the charging voltage after constant current charging, and performing constant voltage charging with the charging voltage; and when the constant voltage charging time reaches a1, switching to the constant current charging with the maximum charging current in the current charging stage.
C. When the charging temperature of the terminal equipment is in a second temperature range, shortening the constant-current charging time length from t1 to t2; the constant voltage duration is prolonged from a1 to a2; constant-current charging is carried out within a second temperature range by using the maximum charging current, and when the constant-current charging time reaches t2, constant-voltage charging is switched; and when the constant voltage charging time reaches a2, switching to constant current charging. Repeating the charging in the above way until the switching frequency between the constant voltage charging and the constant current charging reaches N1, continuously shortening the charging time from t2 to t3, prolonging the constant voltage time from a2 to a3, and sequentially charging in the shortened constant current time and the prolonged constant voltage time; when the constant voltage charging and constant current charging times reach N2, continuously shortening the charging time length from t3 to t4, and prolonging the constant voltage time length from a3 to a4; the steps of shortening the constant current time length and prolonging the constant voltage time length are sequentially repeated until the charging temperature of the terminal equipment is within the first temperature range, and the step B is returned to for charging; or the charging voltage of the terminal equipment reaches the stage cut-off voltage of the current charging stage; and entering the next charging stage when the charging voltage reaches the stage cut-off voltage of the current charging stage.
D. When the charging voltage of the terminal equipment reaches the charging cut-off voltage of the terminal equipment, carrying out constant voltage charging at the charging cut-off voltage; when the charging current after constant voltage charging at the charging cutoff voltage reaches the charging cutoff current of the terminal device, the charging is stopped.
The charging temperature can be effectively controlled within a reasonable range by continuously adjusting the constant voltage charging time and the constant current charging time, the polarization inside the battery cell of the terminal equipment battery can be effectively eliminated through a repeated constant voltage charging process, the large current charging time is prolonged, the charging speed is improved, the temperature rise caused by polarization internal resistance can be reduced, and the charging temperature rise is further reduced.
Fig. 3 is a diagram illustrating a charging device according to an exemplary embodiment. Referring to fig. 3, the charging device 1000 includes a charging module 1001, a first switching module 1002, a second switching module 1003, and an entry module 1004, wherein,
a charging module 1001 configured to determine a maximum charging current at a current charging stage and perform constant current charging at the maximum charging current;
a first switching module 1002 configured to switch to constant-voltage charging after a charging duration of the constant-current charging reaches a first switching condition;
the second switching module 1003 is configured to switch to constant-current charging after the charging duration of the constant-voltage charging reaches a second switching condition;
an entering module 1004 is configured to enter a next charging phase when the charging voltage of the constant voltage charging reaches a phase cut-off voltage of a current charging phase.
In an embodiment, the first switching module 1002 is specifically configured to determine that the first switching condition is reached if the charging time duration of the nth constant current charging in the current charging stage reaches an nth constant current time duration when the charging temperature is within a first temperature range, where n is a positive integer.
In an embodiment, the first switching module 1002 is specifically configured to determine that the first switching condition is reached if a charging duration of the nth constant current charging in the current charging stage reaches an n + x constant current duration when the charging temperature is within a second temperature range and a switching number between the constant current charging and the constant voltage charging in the current charging stage is less than a number threshold, where n is a positive integer; x is a positive integer; the n + x constant current duration is less than the n constant current duration;
the temperature of the second temperature range is higher than the temperature of the first temperature range.
In an embodiment, the first switching module 1002 is specifically configured to determine that the first switching condition is reached if a charging duration of an nth constant current charging in the current charging stage reaches an n + y constant current duration when a switching number between the constant current charging and the constant voltage charging in the current charging stage is equal to or greater than a number threshold, where n is a positive integer; y is a positive integer greater than x; and the n + y constant current time length is less than the n + x constant current time length.
In an embodiment, the second switching module 1003 is specifically configured to determine that the second switching condition is reached if the charging duration of the mth constant voltage charging in the current charging stage reaches the mth constant voltage duration when the charging temperature is within the first temperature range, where m is a positive integer.
In an embodiment, the second switching module 1003 is specifically configured to determine that the second switching condition is reached if the charging duration of the mth constant voltage charging in the current charging stage reaches the mth + s constant voltage duration when the charging temperature is within the second temperature range and the number of switching times between the constant current charging and the constant voltage charging in the current charging stage is less than a time threshold, where m is a positive integer; s is a positive integer; the mth + s constant voltage time period is longer than the mth constant voltage time period.
In an embodiment, the second switching module 1003 is specifically configured to determine that the second switching condition is reached if a charging duration of the mth constant voltage charging in the current charging stage reaches an mth + pth constant voltage duration when a switching number between the constant current charging and the constant voltage charging in the current charging stage is equal to or greater than a number threshold, where m is a positive integer; p is a positive integer greater than s; the (m + p) th constant voltage duration is longer than the (m + s) th constant voltage duration.
In one embodiment, as shown in fig. 4, the charging device 1000 further includes:
a stop charging module 1005 configured to stop charging the terminal device when the charging voltage of the constant voltage charging reaches a cutoff voltage of the terminal device and the charging current reaches a cutoff current of the terminal device.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 5 is a block diagram of an entity of a terminal device according to an example embodiment. For example, the terminal device may be a mobile phone, a mobile computer, or the like.
Referring to fig. 5, the terminal device may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.
The processing component 802 generally controls overall operation of the terminal device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the device. Examples of such data include instructions for any application or method operating on the terminal device, contact data, phonebook data, messages, pictures, videos, etc. The memory 804 may be implemented by any type or combination of volatile or non-volatile 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 disks.
The power component 806 provides power to various components of the terminal device. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for terminal devices.
The multimedia component 808 includes a screen providing an output interface between the terminal device and the user. 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 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 a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the terminal device is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 814 includes one or more sensors for providing various aspects of state assessment for the terminal device. For example, sensor assembly 814 may detect the open/closed status of the device, the relative positioning of components, such as the display and keypad of the terminal device, the change in position of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the orientation or acceleration/deceleration of the terminal device, and the change in temperature of the terminal device. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 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 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communication between the terminal device and other devices in a wired or wireless manner. The terminal device may access a wireless network based on a communication standard, such as Wi-Fi,2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 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 terminal device 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the terminal device to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium in which instructions, when executed by a processor of a terminal device, enable the terminal device to perform a charging method, the method comprising:
determining the maximum charging current in the current charging stage, and performing constant current charging by using the maximum charging current;
after the charging time of the constant-current charging reaches a first switching condition, switching to constant-voltage charging;
after the charging time of the constant-voltage charging reaches a second switching condition, switching to constant-current charging;
and entering the next charging stage when the charging voltage of the constant-voltage charging reaches the stage cut-off voltage of the current charging stage.
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 will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (12)
1. A charging method is applied to a terminal device, and comprises the following steps:
determining the maximum charging current in the current charging stage, and performing constant current charging by using the maximum charging current;
after the charging time of the constant-current charging reaches a first switching condition, switching to constant-voltage charging;
after the charging time of the constant voltage charging reaches a second switching condition, switching to constant current charging;
entering a next charging stage when the charging voltage of the constant voltage charging reaches a stage cut-off voltage of the current charging stage;
wherein, the charging duration of the constant current charging reaches a first switching condition, which comprises:
when the charging temperature is within a first temperature range, if the charging time of the nth constant current charging in the current charging stage reaches the nth constant current time, determining that the first switching condition is reached, wherein n is a positive integer;
the charging duration of the constant-voltage charging reaches a second switching condition, including:
when the charging temperature is within the first temperature range, if the charging time of the mth constant voltage charging in the current charging stage reaches the mth constant voltage time, determining that the second switching condition is reached, wherein m is a positive integer;
the charging duration in the constant current charging reaches a first switching condition, and the method further comprises the following steps:
when the charging temperature is within a second temperature range and the switching frequency between the constant current charging and the constant voltage charging in the current charging stage is smaller than a frequency threshold value, if the charging time of the nth constant current charging in the current charging stage reaches the (n + x) th constant current time, determining that the first switching condition is reached, wherein n is a positive integer; x is a positive integer; the n + x constant current duration is less than the n constant current duration;
the temperature of the second temperature range is higher than the temperature of the first temperature range.
2. The method of claim 1, wherein the charging duration of the constant current charging reaches a first switching condition comprising:
when the switching times between the constant current charging and the constant voltage charging in the current charging stage are equal to or larger than a time threshold, if the charging time of the nth constant current charging in the current charging stage reaches the (n + y) th constant current time, determining that the first switching condition is reached, wherein n is a positive integer; y is a positive integer greater than x; and the n + y constant current time length is less than the n + x constant current time length.
3. The method according to claim 1, wherein the charging period of the constant-voltage charging reaches a second switching condition, including:
when the charging temperature is within a second temperature range and the switching frequency between the constant-current charging and the constant-voltage charging in the current charging stage is smaller than a frequency threshold, if the charging time of the mth constant-voltage charging in the current charging stage reaches the mth + s constant-voltage time, determining that the second switching condition is reached, wherein m is a positive integer; s is a positive integer; the mth + s constant voltage time period is longer than the mth constant voltage time period.
4. The method according to claim 3, wherein the charging period of the constant-voltage charging reaches a second switching condition, including:
when the switching frequency between the constant-current charging and the constant-voltage charging in the current charging stage is equal to or greater than a frequency threshold value, if the charging time of the mth constant-voltage charging in the current charging stage reaches the mth + pth constant-voltage time, determining that the second switching condition is reached, wherein m is a positive integer; p is a positive integer greater than s; the m + p constant voltage time length is longer than the m + s constant voltage time length.
5. The method according to any one of claims 1 to 4, further comprising:
and when the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal equipment and the charging current reaches the cut-off current of the terminal equipment, stopping charging the terminal equipment.
6. A charging device, the device comprising:
the charging module is configured to determine the maximum charging current in the current charging stage and perform constant-current charging at the maximum charging current;
the first switching module is configured to switch to constant-voltage charging after the charging duration of the constant-current charging reaches a first switching condition;
the second switching module is configured to switch to constant-current charging after the charging duration of the constant-voltage charging reaches a second switching condition;
an entering module configured to enter a next charging stage when a charging voltage of the constant voltage charging reaches a stage cut-off voltage of a current charging stage;
the first switching module is specifically configured to determine that the first switching condition is reached if the charging time of the constant current charging for the nth time in the current charging stage reaches an nth constant current time when the charging temperature is within a first temperature range, wherein n is a positive integer;
the second switching module is specifically configured to determine that the second switching condition is reached if the charging time of the mth constant voltage charging in the current charging stage reaches the mth constant voltage time when the charging temperature is within the first temperature range, where m is a positive integer;
the first switching module is specifically configured to determine that the first switching condition is reached if the charging duration of the nth constant current charging in the current charging stage reaches an nth + x constant current duration when the charging temperature is within a second temperature range and the switching frequency between the constant current charging and the constant voltage charging in the current charging stage is less than a frequency threshold, where n is a positive integer; x is a positive integer; the n + x constant current duration is less than the n constant current duration;
the temperature of the second temperature range is higher than the temperature of the first temperature range.
7. The apparatus according to claim 6, wherein the first switching module is specifically configured to determine that the first switching condition is reached if a charging duration of an nth constant current charging in the current charging phase reaches an n + y constant current duration when a number of switching times between the constant current charging and the constant voltage charging in the current charging phase is equal to or greater than a time threshold value, where n is a positive integer; y is a positive integer greater than x; and the n + y constant current time length is less than the n + x constant current time length.
8. The apparatus according to claim 6, wherein the second switching module is specifically configured to determine that the second switching condition is reached if a charging duration of an mth constant voltage charge in the current charging stage reaches an m + s constant voltage duration when a charging temperature is within a second temperature range and a number of times of switching between the constant current charge and the constant voltage charge in the current charging stage is less than a time threshold, where m is a positive integer; s is a positive integer; the mth + s constant voltage time period is longer than the mth constant voltage time period.
9. The apparatus according to claim 8, wherein the second switching module is specifically configured to determine that the second switching condition is reached if a charging duration of an mth constant voltage charge in the current charging phase reaches an m + pth constant voltage duration when a number of switching times between the constant current charge and the constant voltage charge in the current charging phase is equal to or greater than a time threshold value, where m is a positive integer; p is a positive integer greater than s; the (m + p) th constant voltage duration is longer than the (m + s) th constant voltage duration.
10. The apparatus of any one of claims 6 to 9, further comprising:
and the charging stopping module is configured to stop charging the terminal equipment when the charging voltage of the constant voltage charging reaches the cut-off voltage of the terminal equipment and the charging current reaches the cut-off current of the terminal equipment.
11. A terminal device, comprising:
a processor;
a memory for storing processor execution instructions;
wherein the processor is configured to perform the charging method of any one of claims 1 to 5.
12. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of a terminal device, enable the terminal device to perform the charging method according to any one of claims 1 to 5.
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