CN105790345A - Charging control method and device - Google Patents
Charging control method and device Download PDFInfo
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- CN105790345A CN105790345A CN201410829203.1A CN201410829203A CN105790345A CN 105790345 A CN105790345 A CN 105790345A CN 201410829203 A CN201410829203 A CN 201410829203A CN 105790345 A CN105790345 A CN 105790345A
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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
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Abstract
The invention discloses a charging control method and device, relates to the technical field of communication, and aims at solving the problem of low charging performance of a terminal since an adapter is not matched with the terminal in the prior art. The method comprises the following steps: detecting a charging current value and a charging voltage value, which are input into a charging circuit by the adapter; and carrying out current-limiting adjustment on the charging current according to the charging current value and the charging voltage value until the adapter charges a charged device of the charging circuit with a target charging current. The target charging current is the maximal charging current provided by the adapter.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of charge control method and device.
Background technology
Along with the development of mechanics of communication and network technology, being continuously increased of user's request, the integrated function of terminal unit gets more and more, and thing followed Overall Power Consumption is also more and more prominent.Therefore the capacitance of power supply and charging performance are proposed higher requirement.
At present, although terminal is connected with adapter such as through USB interface greatly and is charged, it also requires adapter provides output electric current and the output voltage of coupling, charging process just can be made maximally efficient.But, in a particular application, user usually can leave behind the standard configuration charger of terminal, and use other adapters of USB interface to be charged when terminal power deficiency.Owing to the charge parameter of adapter does not mate with the charge parameter of terminal, it is possible to cause the series of problems such as slow, the degraded performance of charging, greatly reduce the charging performance of terminal.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of charge control method and device, does not mate, in order to solve in prior art adapter, the problem that the terminal charge performance caused is low with terminal.
On the one hand, the present invention provides a kind of charge control method, including: test adaptor inputs the charging current value to charging circuit and charging voltage value；According to described charging current value and described charging voltage value, charging current is carried out current limliting adjustment, until described adapter is charged for being electrically charged device with target charge current by described charging circuit；Wherein, the maximum charging current that described target charge current provides for described adapter.
Optionally, described according to described charging current value with described charging voltage value, charging current is carried out current limliting adjustment, until described adapter includes with the device charging that is electrically charged that target charge current is described charging circuit: according to described charging current value and described charging voltage value, adjust the current limit value of described charging circuit；By adjusting described current limit value, described charging current is carried out current limliting adjustment, until described adapter is electrically charged device charging with what target charge current was described charging circuit.
Optionally, described according to described charging current value with described charging voltage value, the current limit value adjusting described charging circuit includes: increase described current limit value with the first step-length；If described charging current is equal to the described current limit value after increasing, and described charging voltage is more than or equal to predetermined voltage threshold, continues to increase described current limit value with described first step-length；Described by adjusting described current limit value, described charging current is carried out current limliting adjustment, until described adapter includes with the device charging that is electrically charged that target charge current is described charging circuit: by adjusting described current limit value, described charging current is carried out current limliting adjustment, till described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than described predetermined voltage threshold.
Optionally, described continuation increases described current limit value with described first step-length, until described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than after described predetermined voltage threshold, described method also includes: described current limit value is reduced described first step-length；The described current limit value that will reduce, increases with the second step-length, and wherein, described second step-length is less than described first step-length；If described charging current is equal to the described current limit value after increasing with described second step-length, and described charging voltage is more than or equal to described predetermined voltage threshold, continues to increase described current limit value with described second step-length.
Optionally, according to described charging current value and described charging voltage value, after charging current is carried out current limliting adjustment, described method also includes: terminate charging when the described dump energy being electrically charged device meets pre-conditioned.
Optionally, terminate charging when the described dump energy being electrically charged device meets pre-conditioned to include:
When described charging current is less than described target charge current, described in detection, it is electrically charged the dump energy of device；Charge cutoff current value is determined according to described dump energy and described charging current；When described charging current is less than described charge cutoff current value, terminate being electrically charged device charging to described.
On the other hand, the present invention also provides for a kind of battery charge controller, including: detection unit, for charging current value and the charging voltage value of test adaptor input to charging circuit；Current limliting adjustment unit, for according to described charging current value and described charging voltage value, carrying out current limliting adjustment to charging current, until described adapter is charged for being electrically charged device with target charge current by described charging circuit；Wherein, the maximum charging current that described target charge current provides for described adapter.
Optionally, described current limliting adjustment unit includes: limits value adjusting module, for according to described charging current value and described charging voltage value, adjusting the current limit value of described charging circuit；Current adjusting module, for by adjusting described current limit value, carrying out current limliting adjustment to described charging current.
Optionally, described limits value adjusting module, specifically for: increase described current limit value with the first step-length；If described charging current is equal to the described current limit value after increasing, and described charging voltage is more than or equal to predetermined voltage threshold, continues to increase described current limit value with described first step-length；Described current adjusting module, specifically for: by adjusting described current limit value, described charging current is carried out current limliting adjustment, and till described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than described predetermined voltage threshold.
Further, described limits value adjusting module, it is additionally operable to continuing with the described first step-length described current limit value of increase, until described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than after described predetermined voltage threshold: described current limit value is reduced described first step-length；The described current limit value that will reduce, increases with the second step-length, and wherein, described second step-length is less than described first step-length；If described charging current is equal to the described current limit value after increasing with described second step-length, and described charging voltage is more than or equal to described predetermined voltage threshold, continues to increase described current limit value with described second step-length.
Optionally, this device also includes terminating unit, for terminating charging when the described dump energy being electrically charged device meets pre-conditioned.
Optionally, described termination unit specifically for: when described charging current is less than described target charge current, described in detection, be electrically charged the dump energy of device；Charge cutoff current value is determined according to described dump energy and described charging current；When described charging current is less than described charge cutoff current value, terminate being electrically charged device charging to described.
The charge control method of embodiment of the present invention offer and device, it is capable of detecting when that adapter inputs the charging current value to charging circuit and charging voltage value, and according to described charging current value and described charging voltage value, charging current is carried out current limliting adjustment, until described adapter can with target charge current for being electrically charged device charging.So, when end face is to the power supply adaptor of different model, by charging current is carried out current limliting adjustment, terminal can be adjusted the state that the optimal charge state with adapter matches, thus giving full play to the charging performance of various adapter.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart of the charge control method that the embodiment of the present invention provides；
Fig. 2 is a kind of structural representation implementing the charging management chip in the terminal of charge control method in the preferred embodiment of the present invention；
Fig. 3 is that in the preferred embodiment of the present invention, the signal of constant-current phase Charge Management flows to schematic diagram；
Fig. 4 is that in the preferred embodiment of the present invention, the signal of constant-voltage phase Charge Management flows to schematic diagram；
Fig. 5 is a kind of detail flowchart of charge control method in the preferred embodiment of the present invention；
Fig. 6 is a kind of structural representation of the battery charge controller that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, does not limit the present invention.
As it is shown in figure 1, embodiments of the invention provide a kind of charge control method, including:
S11, test adaptor inputs the charging current value to charging circuit and charging voltage value；
S12, according to described charging current value and described charging voltage value, carries out current limliting adjustment to charging current, until described adapter is charged for being electrically charged device with target charge current by described charging circuit；Wherein, the maximum charging current that described target charge current provides for described adapter.
The charge control method that the embodiment of the present invention provides, it is capable of detecting when that adapter inputs the charging current value to charging circuit and charging voltage value, and according to described charging current value and described charging voltage value, charging current is carried out current limliting adjustment, until described adapter can with target charge current for being electrically charged device charging.So, when end face is to the power supply adaptor of different model, by charging current is carried out current limliting adjustment, terminal can be adjusted the state that the optimal charge state with adapter matches, thus giving full play to the charging performance of various adapter.
It should be noted that by process that adapter is terminal charge, adapter is equivalent to a power supply, and the charging circuit in terminal is equivalent to load, more satisfactory charging effect could be realized when load matches with power supply.
When the charging socket (such as USB port) of terminal has just inserted a charging adapter, owing to this terminal is not mated with adapter, terminal is not aware that for the charging load of self, this adapter is provided that great charging current and charging voltage, so, for the maximum charging current finding adapter to provide, charging voltage also can meet charging requirement simultaneously, optionally, the charging current and charging voltage that are input in the charging circuit of terminal in real time by adapter can be detected in step s 11, and in step s 12 according to described charging current value and described charging voltage value, charging current is carried out current limliting adjustment, until described adapter is electrically charged device charging with what target charge current was described charging circuit.
Specifically, step S12 comprises the steps that
According to charging current value and charging voltage value, adjust the current limit value of charging circuit；
By adjusting current limit value, charging current is carried out current limliting adjustment, until adapter is electrically charged device charging with what target charge current was charging circuit.
That is, it is possible to a current limit value the impedance according to the charging circuit in this current limit value adjustment terminal being set in the terminal, making charging current be equal to this current limit value, thus realizing the restriction to charging current.When this current limit value is changed, the charging current in charging circuit also can change accordingly, thus realizing the adjustment to charging current.Preferably, in order to not miss most suitable charging current, it is possible to when terminal is accessed charging adapter, the initial current limit value of acquiescence is arranged to a small amount (such as 50-100 microampere), is then gradually increased current limit value with certain step-length.The size of this step-length can directly affect speed and the degree of accuracy that electric current adjusts, and step-length is more big, and speed is more fast but precision is more low, and step-length is more little, and speed is more slow but precision is more high.
Optionally, in one embodiment of the invention, according to described charging current value and described charging voltage value, the current limit value adjusting described charging circuit includes:
Described current limit value is increased with the first step-length；
If described charging current is equal to the described current limit value after increasing, and described charging voltage is more than or equal to predetermined voltage threshold, continues to increase described current limit value with described first step-length；
Described by adjusting described current limit value, described charging current is carried out current limliting adjustment, until described adapter includes with the device charging that is electrically charged that target charge current is described charging circuit:
By adjusting described current limit value, described charging current being carried out current limliting adjustment, till described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than described predetermined voltage threshold.
In the present embodiment, when charging current is equal to the current limit value after increasing, and charging voltage more than or equal to predetermined voltage threshold time, illustrate that charging voltage that adapter provides and charging current do not reduce because of the change of load, still unnecessary ability is had to carry out the load that band is bigger, therefore, it can allow adapter to charge to the device that is electrically charged of terminal with bigger charging current by increase current limit value.Increase along with charging current, the load of adapter also incrementally increases, when its load reaches the maximum loadability of adapter but current limit value is still when increasing, for different types of adapter, or charging current cannot increase therewith, or charging voltage be unable to maintain that before magnitude of voltage, occur that charging voltage declines.
When charging current cannot increase, illustrate that charging current now has been the maximum charging current that adapter can be provided by, it is possible to terminal is charged with this charging current for target charge current.When charging voltage declines, owing to when voltage drops to and charges normal below required voltage, just terminal cannot be charged normal.Therefore, charging normal required voltage becomes a voltage critical point, charging current that this critical point is corresponding and target current.Optional you, it is possible to this voltage critical point is set to predetermined voltage threshold, in order to finding target charge current in the adjustment to charging current, this target charge current can make full use of the charging ability of adapter, is effectively improved the charge efficiency of terminal.
In above-described embodiment, it is adjusted with first step long electrical wave limits value, but the invention is not restricted to this.In order to accelerate to find speed and the efficiency of target charge current, further, in other embodiments of the invention, continue to increase current limit value with the first step-length, until described charging current does not increase with the increase of described current limit value, or until described charging voltage, lower than after described predetermined voltage threshold, may also include the steps of:
Limit current to value and reduce the first step-length；
The current limit value that will reduce, increases with the second step-length, and wherein, the second step-length is less than the first step-length；
If charging current is equal to the current limit value after increasing with the second step-length, and charging voltage is more than or equal to predetermined voltage threshold, continue to increase current limit value with the second step-length, till charging current does not increase with the increase of current limit value, or until charging voltage value is lower than predetermined voltage threshold.
So, owing to the first step is grown up in the second step-length, when increasing charging current with the first step-length, first quickly navigate near target charge current, be then exactly found target charge current with the second step-length again.In the present embodiment, adopt and first deduct first step-length, be then stepped up the second step-length again, but the invention is not restricted to this, in other embodiments of the invention, it is also possible to retain this first step-length, and on the basis of current limit value, progressively deduct the second step-length.Wherein, the occurrence of the first step-length and the second step-length preferably has bigger difference, as the first step-length is the second step-length 5 times or 10 times etc..
After determining target charge current, namely can target charge current be terminal be electrically charged device charging, the namely constant-current charging phase of charging process, injection along with electric energy, the voltage being electrically charged device and impedance etc. as load are also vary, reach after to a certain degree, charging current can be made constantly to reduce, now the constant voltage charging phase of corresponding charging process.
Further, after step s 12, may also include that and terminate charging when the described dump energy being electrically charged device meets pre-conditioned.So, charging termination operation is also carry out according to the dump energy being electrically charged device, it is ensured that the device that is electrically charged of terminal can be effectively full of, and further increases the charging performance of terminal.For example, it is possible in above-mentioned constant-voltage phase, according to the charging current detected and the current electric quantity according to cell degradation curve detection, dynamically adjust cut-off current controlling value, stop charging when electricity is 100%, complete whole charging process.
Specifically, terminate charging when the described dump energy being electrically charged device meets pre-conditioned to comprise the steps that
When described charging current is less than described target charge current, described in detection, it is electrically charged the dump energy of device；
Charge cutoff current value is determined according to described dump energy and described charging current；
When described charging current is less than described charge cutoff current value, terminate being electrically charged device charging to described.
So can avoid, owing to cutoff current value is excessive and stop charging in advance, causing that battery can not be full of, or cutoff current value being too small and cause battery overshoot, substantially increases charging performance.
Below by specific embodiment, charge control method provided by the invention is described in detail.
In one embodiment of the invention, the structure implementing the charging management chip in the terminal of charge control method can be as shown in Figure 2.
Owing to terminal to adapt to connect various types of adapter, and the output electric current of each adapter is likely to difference, and for exporting the adapter of big electric current, in order to give full play to the output current capacity of adapter, choosing of terminal charge managing chip is most important.For covering further types of adapter as possible, preferentially choose high voltage withstanding input, the charging management chip of especially big electric current input.
Charging control section is divided: mainly include input electric cur-rent measure unit, input voltage measurement unit, current limiting unit, cut-off current limiting unit and electric power detection unit.Wherein, current limiting unit and cut-off current limiting unit can adopt the modes such as digital regulation resistance to realize respectively.
At constant-current charging phase, current limiting unit first uses wide range step-length to be incremented by, and judge that whether input voltage is lower than threshold value, if being not less than threshold value, checking whether input electric cur-rent measure result changes accordingly, it is thus achieved that the maximum output current of adapter, then current limiting unit application small-range is incremented by, to obtain cut-off current more accurately, finally give optimal charge operating point.At constant voltage charging phase, by the real-time detection to battery electric quantity, dynamically adjust cut-off current limiting unit, it is to avoid cut-off current limits value is unreasonable and stops charging in advance and causes that battery can not be full of, or cutoff current value is too small and make battery overshoot.
Fig. 3 is constant-current phase Charge Management schematic diagram.As it is shown on figure 3, under the collaborative work of Master control chip, input electric cur-rent measure, input voltage measurement and current limiting unit, it is possible to obtain the best operating point of constant-current charge.
Fig. 4 is constant-voltage phase Charge Management schematic diagram.As shown in Figure 4, electric power detection unit can detect battery electric quantity in real time according to cell degradation curve, and the data of battery electric quantity are transferred to Master control chip, and Master control chip adjusts cut-off current cut-off current accordingly according to state of charge, until battery is full of.
Fig. 5 is the detail flowchart of charge control method in the preferred embodiment of the present invention, in conjunction with Fig. 2 to Fig. 5, describes the implementing procedure figure of the present invention in detail.
As it is shown in figure 5, the charge control method that the present embodiment provides comprises the steps:
S301: terminal system is started shooting, performs S302；
S302: the power supply normal supply of terminal other parts circuit, but the enable of charge closing circuit so that it is temporarily do not work, performs S303；
S303: terminal system determines whether the interrupt signal that adapter inserts, once there be adapter to insert, performs S304；
S304: Master control chip enables charging circuit, by the current limliting default value of default, starts to charge the battery, performs S305；
S305: detection input charging current, notifies Master control chip result, performs S306；
S306: Master control chip is according to input charging current result, it is judged that whether trickle charge completes；If being not fully complete, then performing S305, continuing trickle charge；If trickle charge completes, perform S307；
S307: enter constant-current charging phase, Current limited Control unit increases restriction electric current step by step with wide range, performs S308；
S308: whether detection input voltage is lower than threshold value, if lower than threshold value, being then the maximum output current within the scope of adapter normal output voltage, then performed S310；If being not less than threshold value, perform S309；
S309: Master control chip contrast cut-off current progressively increase before and after input charging current, if electric current accordingly increases, then perform S307, continue the cut-off current that progressively increases；If electric current is constant, then it is the maximum output current of adapter, has performed S310；
S310: one wide range current class of current limiting unit rollback, prepares for obtaining cut-off current more accurately, performs S311；
S311: Current limited Control unit increases restriction electric current step by step with small-range, performs S312；
S312: whether detection input voltage, lower than threshold value, if lower than threshold value, has then been the maximum output current within the scope of adapter normal output voltage, and cut-off current now is maximum limit flow valuve more accurately, then perform S314；If being not less than threshold value, and then perform S313；
S313: Master control chip contrast cut-off current progressively increase before and after input charging current, if electric current accordingly increases, then perform S311, continue the cut-off current that progressively increases；If electric current is constant, being then the maximum output current of adapter, cut-off current now is maximum limit flow valuve more accurately, and then performs S314；
S314: arrange best cut-off current according to S313 gained maximum limit flow valuve, makes system be operated in best operating point, performs S315；
S315: Master control chip detection input charging current, according to results of weak current, and then performs S316；
S316: Master control chip is according to testing result, if electric current is constant, then performs S315, continues constant-current charge；If electric current reduces, then transferred to constant-voltage charge by constant-current charge, perform S317；
S317: Master control chip detection input charging current, according to results of weak current, and then performs S318；
S318: along with input charging current constantly reduces, according to battery electric quantity testing result, dynamically adjust cutoff current value, to control charging process more accurately, performs S319；
S319: electric power detection monitor in real time battery electric quantity state, if battery underfill, then performs S317；If battery is full of, then perform S320；
S320: stop charging, complete whole charging process.
The present invention passes through said method embodiment, and terminal can connect the adapter of different output current, it is provided that a kind of efficient, full capacity, overall process Charge Management scheme.In whole operating process, give full play to the current output capability of various adapter；Avoid battery by electric power detection unit to be likely to rush discontented or overshoot problem, improve battery capacity utilization rate, extend flying power, improve Consumer's Experience；Electric power detection unit, according to cell degradation curve, dynamically adjusts battery electric quantity, makes battery electric quantity detection more accurate.
Accordingly, as shown in Figure 6, embodiments of the invention also provide for a kind of battery charge controller, including:
Detection unit 40, for charging current value and the charging voltage value of test adaptor input to charging circuit；
Current limliting adjustment unit 42, for according to described charging current value and described charging voltage value, carrying out current limliting adjustment to charging current, until described adapter is charged for being electrically charged device with target charge current by described charging circuit；Wherein, the maximum charging current that described target charge current provides for described adapter.
The battery charge controller that the embodiment of the present invention provides, detection unit 40 is capable of detecting when that adapter inputs the charging current value to charging circuit and charging voltage value, charging current can be carried out current limliting adjustment according to described charging current value and described charging voltage value by current limliting adjustment unit 42, until described adapter can with target charge current for being electrically charged device charging.So, when end face is to the power supply adaptor of different model, by charging current is carried out current limliting adjustment, terminal can be adjusted the state that the optimal charge state with adapter matches, thus giving full play to the charging performance of various adapter.
Optionally, current limliting adjustment unit 42 includes:
Limits value adjusting module, for according to described charging current value and described charging voltage value, adjusting the current limit value of described charging circuit；
Current adjusting module, for by adjusting described current limit value, carrying out current limliting adjustment to described charging current.
Optionally, limits value adjusting module, can be specifically for:
Described current limit value is increased with the first step-length；
If described charging current is equal to the described current limit value after increasing, and described charging voltage is more than or equal to predetermined voltage threshold, continues to increase described current limit value with described first step-length；
Described current adjusting module, specifically for, for by adjusting described current limit value, described charging current being carried out current limliting adjustment, till described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than described predetermined voltage threshold.
Further, described limits value adjusting module, it is additionally operable to continuing with the described first step-length described current limit value of increase, until described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than after described predetermined voltage threshold:
Described current limit value is reduced described first step-length；
The described current limit value that will reduce, increases with the second step-length, and wherein, described second step-length is less than described first step-length；
If described charging current is equal to the described current limit value after increasing with described second step-length, and described charging voltage is more than or equal to described predetermined voltage threshold, continues to increase described current limit value with described second step-length.
Further, this device may also include termination unit, for terminating charging when the described dump energy being electrically charged device meets pre-conditioned.So, the charging termination operation terminating unit is also that the dump energy being electrically charged device described in basis carries out, it is ensured that the device that is electrically charged of terminal can be effectively full of, and further increases the charging performance of terminal.
Optionally, terminating unit can be specifically for: when described charging current is less than described target charge current, be electrically charged the dump energy of device described in detection；Charge cutoff current value is determined according to described dump energy and described charging current；When described charging current is less than described charge cutoff current value, terminate being electrically charged device charging to described.
Although being example purpose, having been disclosed for the preferred embodiments of the present invention, it is also possible for those skilled in the art will recognize various improvement, increase and replacement, and therefore, the scope of the present invention should be not limited to above-described embodiment.
Claims (12)
1. a charge control method, it is characterised in that including:
Test adaptor inputs the charging current value to charging circuit and charging voltage value；
According to described charging current value and described charging voltage value, charging current is carried out current limliting adjustment, until described adapter is charged for being electrically charged device with target charge current by described charging circuit；Wherein, the maximum charging current that described target charge current provides for described adapter.
2. method according to claim 1, it is characterized in that, described according to described charging current value with described charging voltage value, charging current is carried out current limliting adjustment, until described adapter includes with the device charging that is electrically charged that target charge current is described charging circuit:
According to described charging current value and described charging voltage value, adjust the current limit value of described charging circuit；
By adjusting described current limit value, described charging current is carried out current limliting adjustment, until described adapter is electrically charged device charging with what target charge current was described charging circuit.
3. method according to claim 2, it is characterised in that described according to described charging current value with described charging voltage value, the current limit value adjusting described charging circuit includes:
Described current limit value is increased with the first step-length；
If described charging current is equal to the described current limit value after increasing, and described charging voltage is more than or equal to predetermined voltage threshold, continues to increase described current limit value with described first step-length；
Described by adjusting described current limit value, described charging current is carried out current limliting adjustment, until described adapter includes with the device charging that is electrically charged that target charge current is described charging circuit:
By adjusting described current limit value, described charging current being carried out current limliting adjustment, till described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than described predetermined voltage threshold.
4. method according to claim 3, it is characterized in that, described continuation increases described current limit value with described first step-length, until described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than after described predetermined voltage threshold, described method also includes:
Described current limit value is reduced described first step-length；
The described current limit value that will reduce, increases with the second step-length, and wherein, described second step-length is less than described first step-length；
If described charging current is equal to the described current limit value after increasing with described second step-length, and described charging voltage is more than or equal to described predetermined voltage threshold, continues to increase described current limit value with described second step-length.
5. method according to any one of claim 1 to 4, it is characterised in that according to described charging current value and described charging voltage value, after charging current is carried out current limliting adjustment, described method also includes:
Charging is terminated when the described dump energy being electrically charged device meets pre-conditioned.
6. method according to claim 5, it is characterised in that terminate charging when the described dump energy being electrically charged device meets pre-conditioned and include:
When described charging current is less than described target charge current, described in detection, it is electrically charged the dump energy of device；
Charge cutoff current value is determined according to described dump energy and described charging current；
When described charging current is less than described charge cutoff current value, terminate being electrically charged device charging to described.
7. a battery charge controller, it is characterised in that including:
Detection unit, for charging current value and the charging voltage value of test adaptor input to charging circuit；
Current limliting adjustment unit, for according to described charging current value and described charging voltage value, carrying out current limliting adjustment to charging current, until described adapter is charged for being electrically charged device with target charge current by described charging circuit；Wherein, the maximum charging current that described target charge current provides for described adapter.
8. device according to claim 7, it is characterised in that described current limliting adjustment unit includes:
Limits value adjusting module, for according to described charging current value and described charging voltage value, adjusting the current limit value of described charging circuit；
Current adjusting module, for by adjusting described current limit value, carrying out current limliting adjustment to described charging current, so that the described charging current after adjusting is equal to described target charge current.
9. device according to claim 8, it is characterised in that
Described limits value adjusting module, specifically for:
Described current limit value is increased with the first step-length；
If described charging current is equal to the described current limit value after increasing, and described charging voltage is more than or equal to predetermined voltage threshold, continues to increase described current limit value with described first step-length；
Described current adjusting module, specifically for:
By adjusting described current limit value, described charging current being carried out current limliting adjustment, till described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than described predetermined voltage threshold.
10. device according to claim 9, it is characterized in that, described limits value adjusting module, it is additionally operable to continuing with the described first step-length described current limit value of increase, until described charging current does not increase with the increase of described current limit value, or until described charging voltage is lower than after described predetermined voltage threshold:
Described current limit value is reduced described first step-length；
The described current limit value that will reduce, increases with the second step-length, and wherein, described second step-length is less than described first step-length；
If described charging current is equal to the described current limit value after increasing with described second step-length, and described charging voltage is more than or equal to described predetermined voltage threshold, continues to increase described current limit value with described second step-length.
11. the device according to any one of claim 7 to 10, it is characterised in that also include terminating unit, for terminating charging when the described dump energy being electrically charged device meets pre-conditioned.
12. device according to claim 11, it is characterised in that described termination unit specifically for:
When described charging current is less than described target charge current, described in detection, it is electrically charged the dump energy of device；
Charge cutoff current value is determined according to described dump energy and described charging current；
When described charging current is less than described charge cutoff current value, terminate being electrically charged device charging to described.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829203.1A CN105790345A (en) | 2014-12-26 | 2014-12-26 | Charging control method and device |
| PCT/CN2015/079101 WO2016101509A1 (en) | 2014-12-26 | 2015-05-15 | Charging control method and device |
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| CN201410829203.1A CN105790345A (en) | 2014-12-26 | 2014-12-26 | Charging control method and device |
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| CN105790345A true CN105790345A (en) | 2016-07-20 |
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| CN (1) | CN105790345A (en) |
| WO (1) | WO2016101509A1 (en) |
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| CN106771503A (en) * | 2017-02-15 | 2017-05-31 | 广东小天才科技有限公司 | Voltage and current monitoring device and method |
| CN107579572A (en) * | 2017-10-10 | 2018-01-12 | 惠州Tcl移动通信有限公司 | A kind of charging current control method, mobile terminal and storage medium |
| WO2018054142A1 (en) * | 2016-09-20 | 2018-03-29 | 华为技术有限公司 | Charging circuit, terminal, and charging system |
| WO2018072443A1 (en) * | 2016-10-18 | 2018-04-26 | 深圳市中兴微电子技术有限公司 | Charging method, apparatus, and data storage medium |
| CN109066885A (en) * | 2018-09-04 | 2018-12-21 | 深圳市蓝禾技术有限公司 | The charging method of charger and the charger |
| CN109787303A (en) * | 2017-11-13 | 2019-05-21 | 北京小米移动软件有限公司 | Over-current protection method, device and storage medium |
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| CN101340011B (en) * | 2008-08-07 | 2010-12-08 | 中兴通讯股份有限公司 | Intelligent charging method and apparatus |
| JP2010154692A (en) * | 2008-12-25 | 2010-07-08 | Nikon Corp | Charger for electronic device, electronic device, and charging method |
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| CN101924383A (en) * | 2010-08-17 | 2010-12-22 | 惠州Tcl移动通信有限公司 | Mobile terminal of automatically setting charging current and implementation method thereof |
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