CN101728846B - Charging system and charging method - Google Patents
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- CN101728846B CN101728846B CN2008101717957A CN200810171795A CN101728846B CN 101728846 B CN101728846 B CN 101728846B CN 2008101717957 A CN2008101717957 A CN 2008101717957A CN 200810171795 A CN200810171795 A CN 200810171795A CN 101728846 B CN101728846 B CN 101728846B
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Abstract
The invention relates to a charging system and a charging method, in particular to a charging system. The charging system is provided with a variable power source receiving module, a current meter, a current set module and a charging module. A variable power source is received through the variable power source receiving module, the current meter reads the current value of the variable power source, the current set module sets a charging current value according to the current value of the variable power source, and the charging module charges at least one battery according to the charging current value. In addition, the invention also discloses the charging method. Electric power required in charging of an electronic device can be provided by the variable power source for charging the battery of the electronic device, and therefore, the variable power source in the life can be effectively utilized.
Description
Technical field
The present invention relates to a kind of charging system and method, and particularly relate to a kind of charging system and method that electric power is provided by variable power supply.
Background technology
Present portable electron device utilizes the power source of stable civil power as charging mostly; Yet; When the exploitation of alternative energy source and research are day by day ripe; If the electric power in the time of adopting alternative energy source that the operation of portable electron device is provided during with charging even portable electron device is in the environment away from mains system, also can adopt various alternative energy source to supply power.
But generally speaking, the electrical parameter when one of characteristic of alternative energy source is power supply is unstable, and just, magnitude of voltage of being supplied and current value are to float in time.Existing portable electron device lacks these magnitudes of voltage that float and the ability of current value used, therefore only can be by commercial power charged.
Use these magnitudes of voltage that float and the ability of current value for portable electron device is possessed, propose a kind of charging system and charging method at this, in the hope of effectively utilizing the electric power of alternative energy source.
Summary of the invention
Technology type of the present invention promptly provides a kind of charging system, required electric power when charge electronic devices being provided by variable power supply, and set suitable charging current, charge with battery to electronic installation.So can make more efficient use to the variable power supply arround the life.
According to an execution mode of the present invention a kind of charging system is provided, it has variable power supply receiver module, galvanometer, current settings module and charging module.For adopting variable power supply as the required power source of charging, the variable power supply receiver module receives a variable power supply, and galvanometer will read the current value of variable power supply.And the current settings module is set a charging current value according to the current value of variable power supply, and charging module charges according at least one battery of charging current value to battery pack.
Another technology type of the present invention provides a kind of charging method, and required electric power when by variable power supply charge electronic devices being provided charges to the battery of electronic installation, and can more effectively utilize the variable power supply arround the life.
According to another embodiment of the present invention a kind of charging method is provided, it has the following step:
(a) receive a variable power supply;
(b) read the current value of variable power supply;
(c) set charging current value according to the current value of variable power supply; And
(d) charge according at least one battery of this charging current value to battery pack.
Description of drawings
For letting above-mentioned and other purposes of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, the detailed description of appended accompanying drawing be following:
Fig. 1 is a kind of functional-block diagram that illustrates according to the charging system of the present invention one first embodiment.
Fig. 2 illustrates according to the current value of the variable power supply of the present invention one first embodiment and charging current value time relation figure.
Fig. 3 illustrates electric weight according to two batteries in the battery pack of the present invention one first embodiment to time relation figure.
Fig. 4 is a kind of flow chart that illustrates according to the charging method of second embodiment of the invention.
Fig. 5 is the detail flowchart of step that illustrates the setting charging current value of Fig. 4.
The primary clustering symbol description:
100: charging system 171: decrement unit
110: 173: the four judging units of variable power supply receiver module
130: 175: the four setup units of galvanometer
140: battery is selected 181: the five setup units of module
141: electric weight detecting unit 190: charging module
143: judging unit 191: charhing unit
145: setting state unit 910: variable power supply
150: current settings module 920: battery pack
921: the first batteries of 151: the first judging units
923: the second batteries of 153: the first setup units
155: increase progressively unit 310,330,343,345,350,351,353,355,
157: the second judging units 357,359,361,363,365,367,369,371,
Setup unit 373,375,377,379,381,383,390 in 159: the second: step
161: the three judging unit A, B: electric current change curve
163: the three setup unit C, D: electric quantity change curve
Embodiment
To electronic installation, particularly concerning portable electron device, need probably under the situation that lacks civil power, to use for a long time.Yet the form of alternative energy source is a lot of at present, and more common for example is solar power generation, wind power generation and hydroelectric power generation etc.So,,, will be enough to supply with the required electric power of portable electron device long-time operation if can make full use of the electric power of these alternative energy sources even if lack the stable power that civil power provided.
Following examples are to be example with the notebook computer, with the operating process of the charging method of the details of operation of charging system that first embodiment is described and second embodiment.Yet, be noted that application of the present invention is not limited to notebook computer, and can be applicable to for example multimedia player, personal digital assistant, global positioning system and mobile phone etc.
Please with reference to Fig. 1, it illustrates a kind of functional-block diagram according to the charging system of the present invention one first embodiment.This charging system 100 has variable power supply receiver module 110, galvanometer 130, battery selection module 140, current settings module 150 and charging module 190.In order to set suitable charging current value according to the current value of variable power supply 910; The unsettled situation of avoiding charging; Charging system 100 adopts variable power supply receiver module 110 to receive variable power supply 910, and adopts galvanometer 130 to read the current value of variable power supply 910.And, current settings module 150, for example the KBC in the notebook computer (keyboard controller) will be set a charging current value according to the current value of variable power supply 910.And charging module 190, for example the charging chip in the notebook computer (charger IC) then charges to first battery 921 or second battery 923 in the battery pack 920 according to charging current value.
Because current settings module 150 can be set a charging current value according to the current value of variable power supply 910, so can guarantee the stability of charging current value.If the charging current value according to after setting charges to first battery 921 or second battery 923, the unsteadiness of the current value of reason variable power supply 910 does not cause battery to charge smoothly, and shortens the life-span of battery.
What need explanation is, " variable power supply " speech is meant the unfixed power supply of power supply output valve, and it is different from general civil power.Particularly, " variable power supply " is aforementioned alternative energy source, for example the charger on solar cell array, mechanical type electric organ or the automobile.Wherein, the mechanical type electric organ can be wind-driven generator, tital generator, hydroelectric generator etc.
In first embodiment, current settings module 150 has first judging unit 151 and first setup unit 153.Read the current value of variable power supply 910 when galvanometer 130 after, whether the current value that first judging unit 151 is just judged variable power supply 910 is greater than the specified maximum charging current value of first battery 921 or second battery 923.When the current value of variable power supply 910 during, then a threshold value is set at the specified maximum charging current value of first battery 921 by first setup unit 153 greater than the specified maximum charging current value of for example first battery 921.In addition, when the current value of variable power supply 910 is less than or equal to the specified maximum charging current value of first battery 921, by first setup unit 153 threshold value is set at the current value of variable power supply 910 equally.So, can avoid really when follow-up computing, the situation that charging current value exceeds specified maximum charging current value will take place.
In this embodiment, current settings module 150 also has the 3rd judging unit 161 and the 3rd setup unit 163.When first set point during greater than threshold value, the 3rd judging unit 161 will judge whether initial value is less than or equal to threshold value.When judged result is an initial value when being less than or equal to threshold value, the 3rd setup unit 163 just is set at initial value with charging current value.
The current settings module 150 of the charging system 100 of present embodiment still has the 5th setup unit 181.When second set point during, via the 5th setup unit 181 charging current value is set at a minimum charging current value, for example 0.5 ampere greater than threshold value.This minimum charging current value is usually less than the minimum current value of variable power supply 910, and for example 1 ampere, the current value of variable power supply 910 must be higher than 1 ampere, just is enough to trigger the charging operation of battery.
Because of first setup unit 153 is set at the specified maximum charging current value of first battery 921 or the current value of variable power supply 910 with threshold value; At threshold value is in the situation of current value of variable power supply 910, and aforementioned performed setting is for charging current value can be changed according to the size of variable power supply 910 with judging.Just; When the current value of variable power supply 910 changes in time; Charging current value will add the tired increment of a unit at time per unit, deduct the tired depreciation of a unit or do not change; Little by little to follow the current value of variable power supply 910, suddenly increase or reduce in the short time to avoid charging current value, cause the charging of first battery 921 unstable and make battery 921 losts of life of winning.Even when the current value of variable power supply 910 hurriedly falls, charging current value is set at minimum charging current value.
Yet above-mentioned explanation is to be example with first battery 921, and the operational scenario of charging system of the present invention is described, above-mentioned charging system also can be to the characteristic of second battery 923 and the operation of charging.
Comprehensive above-mentioned explanation, charging current value is only done a little change in the adjacent unit interval, even do not change, so can charge to first battery or second battery by progressive charging current value.So, can keep the stability of the charging operation of first battery 921, and the life-span of guaranteeing first battery 921.
In addition, be provided with battery in the charging module 190 and select module 140 and charhing unit 191, battery selects module 140 when being a plurality of when batteries in battery set quantity, and the battery that selection is ready from these batteries is as a battery to be charged.
With first battery 921 among first embodiment and second battery 923 is example, and it is alternately discharge and charging respectively, that is, when first battery 921 is supplied with the electrical power for operation of operating systems, the operation of just charging of second battery 923.And after after a while, the dump power of first battery 921 will be lower than a critical value, for example 10%.Just stop afterwards 923 chargings of second battery, the electrical power for operation of operating system just transfers to be supplied with by second battery 923, and begins 921 chargings of first battery.
For select the battery of institute's desire charging according to the power supply situation of individual cell, charging system 100 also has battery and selects module 140.Battery selects module 140 to have electric weight detecting unit 141, judging unit 143 and setting state unit 145.Electric weight detecting unit 141 is the electric weight that are used for detecting the battery (for example first battery 921) that battery is in power supply state, and judging unit 143 will judge that whether electric weight is less than critical value.Setting state unit 145 is first battery 921 to be set at battery to be charged when electric weight during less than critical value, and charhing unit 191 just begins first battery 921 is charged afterwards.
In other words, detect the electric weight of first battery 921 respectively and whether judge this electric weight less than critical value by electric weight detecting unit 141 and judging unit 143, this critical value for example be first battery 921 maximum capacitance 10.After judging that this electric weight is whether less than critical value, then stop the power supply operation of first battery 921, and begin its charging.
Please with reference to Fig. 2, it illustrates according to the current value of the variable power supply of the present invention one first embodiment and charging current value time relation figure.Relatively the electric current of the current value of expression variable power supply changes curve A and changes curve B with the electric current of representing charging current value during 20 seconds; By the charging system of first embodiment, can make charging current value select cumulative ground, fair ground or adjustment decreasingly along with the size of the current value of variable power supply.So the charging system of first embodiment will judge whether to need to increase, keep or reduce charging current value before each unit interval begins.Mode just can be kept the stable of charging current value according to this, and concerning the battery of the stable charging environment of needs, the charging current value that this charging system provided will help to keep the useful life of battery.
It seems by Fig. 2, suppose that charging current value is to calculate once in per 0.1 second, and the charging system desire is when calculating the 6th second charging current value, the charging current value that can aforementioned initial value be set at the 5.9th second.Be compared to the 5.9th second initial value, the 6th second charging current value can be and exceeds the tired increment of a unit or reduce the tired depreciation of a unit, or constant.
Please with reference to Fig. 3, it illustrates electric weight according to two batteries in the battery pack of the present invention one first embodiment to time relation figure.Compare the electric quantity change curve C of first battery 921 and the electric quantity change curve D of second battery 923; Because of operating system is given in 921 power supplies of first battery; Can find out along with the time increases that by figure the electric weight of first battery 921 is from maximum capacitance (promptly 100%) and minimizing gradually.At the interdischarge interval of this first battery 921, the operation of always charging of second battery 923 is so electric weight rises gradually in it.Until after about 180 minutes, because of the electric weight in first battery 921 is low excessively, for example be about 5% of maximum capacitance, this moment, charging system just can be transferred 921 chargings of first battery, and then gave operating system by 923 discharges of second battery.
So, alternately make first battery 921 and second battery 923 respectively charge and discharge can prolong the operating time of operating system.As shown in Figure 3, do not adopt under the situation about alternately discharging and recharging originally, first battery 921 only can supply Operational System Control 180 minutes required electric power.After alternately first battery 921 and second battery 923 being discharged and recharged, it is required that stored electric power but is enough to supply Operational System Control 420 minutes.That is notebook computer can effectively utilize alternative energy source to battery charge by the charging system of first embodiment, and prolongs the operating time of operating system.
Except that the charging system by first embodiment charges to notebook computer with the employing variable power supply, also can charge to notebook computer with variable power supply via the charging method of second embodiment.To with the charging method that second embodiment is provided the example explanation below.Through the step of charging method thus, can reach the effect that makes full use of the variable power supply arround the life equally.
Please with reference to Fig. 4, it illustrates a kind of flow chart according to the charging method of second embodiment of the invention.Charging method in the portable electric appts that this embodiment provided has the following step:
Step 310: receive a variable power supply;
Step 330: the current value that reads variable power supply;
Step 350:, set a charging current value according to the current value of variable power supply; And
Step 390:, at least one battery is charged according to charging current value.
By execution in step 310～390, can set a charging current value according to the current value of variable power supply 910, so can guarantee the stability of charging current value.If the charging current value according to after setting charges to battery, the unsteadiness of the current value of reason variable power supply does not cause battery to charge smoothly, and shortens the life-span of battery.
Concerning notebook computer, step 350 is to carry out by KBC, and KBC has been integrated the module of power management and chip controls usually.And step 330 can for example be carried out by charging chip.
Behind completing steps 330, charging method is then carried out the following step:
Step 343: send an interrupt instruction to KBC; And
Step 345: the charging mark of setting key disk controller.
Follow execution by the peripheral hardware of notebook computer and trigger KBC with the described action of step 345 like step 343.Then, KBC just begins to carry out a series of judgement and sets action, gives charging chip to set suitable charging current value.
Below exemplary ground explanation a series of judgement that KBC carries out is moved with setting, please with reference to Fig. 5, it is the detail flowchart of step that illustrates the setting charging current value of Fig. 4.That is the charging method of present embodiment is also carried out the following step:
Step 351: the handling procedure of initialization batteries charging;
Step 353: judge whether battery pack connects notebook computer;
The process of the handling procedure of initialization batteries charging can for example realize by activated batteries charging process device during 0.5 second in the step 351, and the battery charge processor can be in the action of back execution in step 353.
Then, KBC is just carried out the following step:
Step 355:, judge that then whether current value is greater than minimum charging current value if battery pack connects notebook computer; And
Step 357:, then finish the handling procedure of batteries charging as if battery pack and disconnected notebook computer.
In step 355, KBC via the charging mark value whether judge current value greater than minimum current value, for example 1 ampere, if judged result be current value less than 1 ampere, then enter into step 357 with the end batteries charging handling procedure.In a second embodiment, adopt step 351～357 to confirm whether notebook computer is connected in battery pack at present, and the power supply capacity of confirming variable power supply, just begin follow-up charging current value and set operation.
For the current value of guaranteeing variable power supply is stable, just, the change of current value is in the acceptable scope.The process of aforementioned setting charging current value also has following step:
Step 359: the current value and charging mark of confirming variable power supply.
Wherein, Can convert the current value that is read into a PWM (PulseWidth Modulation via the peripheral hardware of notebook computer; Pulse width modulation) signal, KBC will carry out follow-up a series of judgement and set operation according to the represented current value size of this pwm signal in the back.
Because of generally including two batteries in the battery pack, before battery charges, need earlier to determine one of these batteries are charged according to the residing charged state of these batteries or armed state.So the process of setting charging current value still has:
Step 361:, from these batteries, select the battery that is ready, as battery to be charged when the quantity of battery when being a plurality of.
In more detail, the battery that selection is ready from battery also need comprise the steps (figure does not show) as the step of battery to be charged:
(a) detect the electric weight that battery is in the battery of power supply state;
(b) judge that whether electric weight is less than critical value; And
(c) when electric weight less than critical value, when for example being 5% maximum capacitance of first battery 921, then first battery 921 is set at battery to be charged, charging module just begins first battery 921 is charged afterwards.
That is charging method detects the electric weight of power supply state battery by abovementioned steps and when this electric weight subcritical value, stops the power supply operation of battery, and begin its charging.
After having selected the battery of institute's desire charging, also need analyze the current value of variable power supply, to set suitable charging current value.Therefore, the process of setting charging current value also comprises the steps:
Step 363: whether the current value of judging variable power supply is greater than the specified maximum charging current value of battery; And
Step 365: when the current value of variable power supply during greater than the specified maximum charging current value of battery; One threshold value is set at the specified maximum charging current value of battery; And when the current value of variable power supply is less than or equal to the specified maximum charging current value of battery, threshold value is set at the current value of variable power supply.
Adopt step 363 whether to exceed the receptible maximum charging current value of battery, and threshold value is set at the current value or the maximum charging current value of variable current by step 365 with the current value of judging variable power supply.So, can avoid conscientiously in follow-up computational analysis operation, the situation that charging current value exceeds specified maximum charging current value will take place.
As desire to avoid the excessive charging current value of amplitude of variation to cause the lost of life of battery, aforementioned setting charging current value process also has following step:
Step 367 a: initial value is added the tired increment of a unit, as one first set point;
Step 369: judge whether first set point is less than or equal to threshold value;
Step 371: when first set point is less than or equal to threshold value, charging current value is set at first set point;
Step 373:, judge whether initial value is less than or equal to threshold value when first set point during greater than threshold value;
Step 375: when initial value is less than or equal to threshold value, charging current value is set at initial value:
Step 377: with the tired depreciation of the initial value unit of deducting, as one second set point;
Step 379: judge whether second set point is less than or equal to threshold value; And
Step 381: when second set point is less than or equal to threshold value, charging current value is set at second set point.
Yet the step of setting charging current value also comprises:
Step 383:, charging current value is set at minimum charging current value when second set point during greater than threshold value.
Minimum charging current value in the step 383 is usually less than the minimum current value of variable power supply, and for example 1 ampere, the current value of variable power supply must be higher than 1 ampere, just is enough to trigger the charging operation of battery.
Because of threshold value being set at the specified maximum charging current value of battery or the current value of variable power supply in the step 365; At threshold value is in the situation of current value of variable power supply, the performed setting of abovementioned steps 367～step 383 with judge it is for charging current value can be changed according to the size of the current value of variable power supply.Just; Charging current value will add the tired increment of a unit at time per unit, deduct the tired depreciation of a unit or do not change; Little by little following the current value of variable power supply, cause battery charge unstable and make shorter battery life so can avoid charging current value suddenly to increase or reduce in the short time.Even when the current value of variable power supply hurriedly falls, charging current value is set at minimum charging current value.
Likewise; If be that threshold value is set in the situation of specified maximum charging current value in step 365; The performed setting of abovementioned steps 367～step 383 can be avoided letting charging current value exceed threshold value with judging, the variation of charging current value is unlikely to exceed specified maximum charging current value so can make.
In sum, charging current value is only done a little change in the adjacent unit interval, even do not change, so can battery be charged by progressive charging current value.So, can keep the stability of the charging operation of battery, and the life-span of guaranteeing battery.
Though the present invention with first and second embodiment openly as above; Yet it is not in order to limit the present invention; Any those skilled in the art; Do not breaking away from the spirit and scope of the present invention, should do various changes and retouching, so protection scope of the present invention is when looking being as the criterion that the appending claims scope defined.
Claims (16)
1. charging system comprises:
One variable power supply receiver module is in order to receive a variable power supply;
One galvanometer is in order to read the current value of said variable power supply;
One current settings module in order to the current value according to said variable power supply, is set a charging current value, and wherein, said current settings module comprises:
One increases progressively the unit, in order to an initial value is added the tired increment of a unit, as one first set point;
Whether one second judging unit is less than or equal to a threshold value in order to judge said first set point; And
One second setup unit in order to when said first set point is less than or equal to said threshold value, is set at said first set point with said charging current value; And
One charging module in order to according to said charging current value, charges at least one battery of a battery pack.
2. charging system as claimed in claim 1, wherein said current settings module comprises:
One the 3rd judging unit in order to when said first set point during greater than threshold value, judges whether said initial value is less than or equal to said threshold value; And
One the 3rd setup unit in order to when said initial value is less than or equal to threshold value, is set at said initial value with said charging current value.
3. charging system as claimed in claim 2, wherein said current settings module comprises:
One decrement unit is in order to said initial value is deducted the tired depreciation of a unit, as one second set point;
Whether one the 4th judging unit is less than or equal to said threshold value in order to judge said second set point; And
One the 4th setup unit in order to when said second set point is less than or equal to said threshold value, is set at said second set point with said charging current value.
4. charging system as claimed in claim 3, wherein said current settings module comprises:
One the 5th setup unit in order to when said second set point during greater than said threshold value, is set at a minimum charging current value with said charging current value.
5. charging system as claimed in claim 4, wherein said current settings module comprises:
One first judging unit, in order to the current value of judging said variable power supply whether greater than the specified maximum charging current value of said battery; And
One first setup unit; In order to when the current value of said variable power supply during greater than the specified maximum charging current value of said battery; Said threshold value is set at the specified maximum charging current value of said battery; And when the current value of said variable power supply was less than or equal to the specified maximum charging current value of said battery, said first setup unit was set at said threshold value the current value of said variable power supply.
6. charging system as claimed in claim 1 also comprises:
One battery is selected module, and when being a plurality of in order to the quantity when said battery, the battery that selection is ready from said a plurality of batteries is as a battery to be charged.
7. charging system as claimed in claim 6, wherein said charging module comprises:
One charhing unit in order to according to said charging current value, charges to said battery to be charged.
8. charging system as claimed in claim 6, wherein said battery select module to comprise:
One electric weight detecting unit is in order to detect the electric weight that is in the battery of power supply state in said a plurality of battery;
One judging unit, in order to the electric weight of judging the battery that is in power supply state in said a plurality of battery whether less than a critical value; And
One setting state unit in order to when electric weight during less than said critical value, then is set at said battery to be charged with the battery that is in power supply state in said a plurality of batteries.
9. the charging method of a portable electric appts comprises:
Receive a variable power supply;
Read the current value of said variable power supply;
According to the current value of said variable power supply, set a charging current value, wherein, the step of setting said charging current value comprises:
One initial value is added the tired increment of a unit, as one first set point;
Judge whether said first set point is less than or equal to a threshold value; And
When said first set point is less than or equal to said threshold value, said charging current value is set at said first set point; And
According to said charging current value, at least one battery of a battery pack is charged.
10. charging method as claimed in claim 9, the step of wherein setting said charging current value comprises:
When said first set point during, judge whether said initial value is less than or equal to said threshold value greater than said threshold value; And
When said initial value is less than or equal to said threshold value, said charging current value is set at said initial value.
11. charging method as claimed in claim 10, the step of wherein setting said charging current value comprises:
Said initial value is deducted the tired depreciation of a unit, as one second set point;
Judge whether said second set point is less than or equal to said threshold value; And
When said second set point is less than or equal to said threshold value, said charging current value is set at said second set point.
12. charging method as claimed in claim 11, the step of wherein setting said charging current value comprises:
When said second set point during, said charging current value is set at a minimum charging current value greater than said threshold value.
13. charging method as claimed in claim 12, the step of wherein setting said charging current value comprises:
Whether the current value of judging said variable power supply is greater than the specified maximum charging current value of said battery; And
When the current value of said variable power supply during, said threshold value is set at the specified maximum charging current value of said battery greater than the specified maximum charging current value of said battery.
14. charging method as claimed in claim 13, the step of wherein setting said charging current value comprises:
When the current value of said variable power supply is less than or equal to the specified maximum charging current value of said battery, said threshold value is set at the current value of said variable power supply.
15. charging method as claimed in claim 9, wherein according to said charging current value, the step that said at least one battery pack is charged comprises:
When the quantity of said battery when being a plurality of, from said a plurality of batteries, select the battery that is ready, as a battery to be charged; And
According to said charging current value, said battery to be charged is charged.
16. charging method as claimed in claim 15 is wherein selected the battery be ready from said a plurality of batteries, comprise as the step of said battery to be charged:
Detect an electric weight that is in the battery of power supply state in said a plurality of battery;
Judge that whether said electric weight is less than a critical value; And
When said electric weight during, then the battery that is in power supply state in said a plurality of batteries is set at said battery to be charged less than said critical value.
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| CN2008101717957A CN101728846B (en) | 2008-10-30 | 2008-10-30 | Charging system and charging method |
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| CN103427126B (en) * | 2012-05-18 | 2016-05-18 | 神讯电脑(昆山)有限公司 | Solar charging method for electrically and device thereof |
| CN104832864B (en) * | 2015-04-02 | 2019-08-09 | 骏韩实业(上海)有限公司 | A kind of solar energy aero-obstruction lantern with low light intensity |
| CN105790373A (en) * | 2016-04-25 | 2016-07-20 | 珠海格力电器股份有限公司 | Power supply device and electronic equipment |
| CN107171380B (en) * | 2017-05-12 | 2020-02-14 | 华霆（合肥）动力技术有限公司 | Charging method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1494193A (en) * | 2002-10-28 | 2004-05-05 | 纬创资通股份有限公司 | Electron system for managing battery capacity and related method |
| CN2630926Y (en) * | 2003-03-28 | 2004-08-04 | 纬创资通股份有限公司 | Power source control system for laptop computer |
-
2008
- 2008-10-30 CN CN2008101717957A patent/CN101728846B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1494193A (en) * | 2002-10-28 | 2004-05-05 | 纬创资通股份有限公司 | Electron system for managing battery capacity and related method |
| CN2630926Y (en) * | 2003-03-28 | 2004-08-04 | 纬创资通股份有限公司 | Power source control system for laptop computer |
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| CN101728846A (en) | 2010-06-09 |
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