CN100574042C - Charge-discharge controller - Google Patents
Charge-discharge controller Download PDFInfo
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- CN100574042C CN100574042C CNB2006100591280A CN200610059128A CN100574042C CN 100574042 C CN100574042 C CN 100574042C CN B2006100591280 A CNB2006100591280 A CN B2006100591280A CN 200610059128 A CN200610059128 A CN 200610059128A CN 100574042 C CN100574042 C CN 100574042C
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Abstract
A kind of charge-discharge controller has selector, charging circuit and at least two battery circuits.Selector has controller, when the voltage that exports controller to during greater than predetermined voltage, controller makes and discharges and recharges control signal and be in first level, and when the voltage that exports controller to is not more than predetermined voltage, and controller makes and discharges and recharges control signal and be in second level and a discharge switch conducting.Each battery circuit has first switch and second switch, a battery and an on-off controller of series connection.When on-off controller receive first level discharge and recharge control signal the time, first switch conduction and second switch become ideal diode, this moment charging circuit can be to battery charge.When on-off controller receive second level discharge and recharge control signal the time, first switch becomes ideal diode and second switch conducting, this moment battery load system is powered.
Description
Technical field
The present invention relates to a kind of charge-discharge controller that discharges and recharges that can be used to control battery circuit.More especially, the present invention relates to a kind of charge-discharge controller that reduces cost and can improve the efficient that discharges and recharges.
Background technology
The application of mancarried device has become one of trend of electronic product.For example, mancarried device can be digital camera, mobile computer, PDA(Personal Digital Assistant) or mobile phone.And battery pack also becomes the vital power supply delivery member of these mancarried devices thereupon.And, therefore the use in parallel of two battery pack can be needed the device that discharges and recharges of these two battery pack of a kind of may command usually in order to allow lengthening service time.
Fig. 1 is the functional block diagram that illustrates an existing charge-discharge controller, the discharging and recharging of this charge-discharge controller may command battery circuit.In Fig. 1, AC/DC converter 100 is to be coupled to selector 150 via charging circuit 101, using selection discharges and recharges first battery circuit 120 or second battery circuit 130, and first battery circuit 120 and second battery circuit 130 also can pass through selector 150, power via 135 pairs of load systems 199 of DC-DC converter.And have eight transistors 160,165,170,175,180,185,190 and 195 in the selector 150.Usually need common series connection of two transistors and direction to form a switch on the contrary,, so can more effectively isolate difference and discharge and recharge interference between the path to reach the state that opens circuit fully.Wherein, transistor 160 is formed first switch with transistor 165, and is controlled by control signal C11.Transistor 170 is formed second switch with transistor 175, and is controlled by control signal C12.Transistor 180 is formed the 3rd switch with transistor 185, and is controlled by control signal C13.Transistor 190 is formed the 4th switch with transistor 195, and is controlled by control signal C14.Therefore the path that discharges and recharges of first battery circuit 120 is controlled by first switch and the 3rd switch respectively, and the path that discharges and recharges of second battery circuit 130 is controlled by second switch and the 4th switch respectively.
And control signal C11, C12, C13 and C14 can be by 155 controls of the control module in the selector 150.For example, when desiring to make 120 chargings of first battery circuit, then control signal C11 can make first switch conduction, and first battery circuit 120 is charged.When desiring to make 130 discharges of second battery circuit, then control signal C14 can make the 4th switch conduction, and makes second battery circuit 130 discharge.
Fig. 2 is the functional block diagram that illustrates existing battery circuit.In first battery circuit 120, battery connector 260 is to be coupled to selector 150, and switch 271 is to be coupled to battery connector 260, and connects with switch 272, and switch 272 can be coupled to battery 290 again.And switch 271 is to be coupled to protection controller 280 respectively with switch 272, and switch 271 is by the 266 control conductings of the first protection controller signals or opens circuit that switch 272 is by the 268 control conductings of the second protection controller signals or opens circuit.And the conducting of switch 271 and switch 272 or open circuit and will control discharging and recharging of battery 290.
Fig. 3 is the functional block diagram that illustrates another existing charge-discharge controller.The existing charge-discharge controller of this figure and Fig. 1 roughly the same (please also refer to Fig. 1), difference is that selector 350 is to use six transistors 360,365,370,375,380 and 390, and six independent control signal C31, C32, C33, C34, C35 and C36 form four switches, control the path that discharges and recharges of first battery circuit 120 and second battery circuit 130 respectively.Wherein, transistor 360 is switches of forming first battery circuit, 120 charge paths with transistor 365, and is controlled by control signal C31 and control signal C35 respectively.Transistor 370 is switches of forming second battery circuit, 130 charge paths with transistor 375, and is controlled by a control signal C32 and a control signal C36 respectively.Transistor 380 is switches of forming first battery circuit, 120 discharge paths with transistor 365, and is controlled by control signal C33 and control signal C35 respectively.Transistor 390 is switches of forming second battery circuit, 130 discharge paths with transistor 375, and is controlled by control signal C34 and control signal C36 respectively.
And control signal C31, C32, C33, C34, C35 and C36 can be by 355 controls of the control module in the selector 350.It should be noted that by Fig. 3 and Fig. 1 more as can be known, transistor among Fig. 1 165 and transistor 185 are simplified as the transistor 365 among Fig. 3, and the transistor 175 among Fig. 1 and transistor 195 are simplified as the transistor 375 among Fig. 3.
In sum, the circuit of existing selector comprises too much transistor, will cause cost too high, and influences the efficient that discharges and recharges.And in the design of existing battery circuit, the battery circuit of two groups of different potentials couples same selector and when discharging and recharging simultaneously, because of can't effectively isolating two groups of different potentials battery circuits, so the efficient that discharges and recharges will reduce.But, earlier to the battery circuit charging of electronegative potential, when two Battery pack group circuit current potentials are identical by the time, again two Battery pack group circuit current potentials are charged simultaneously when making charging if effectively isolate the battery circuit of two groups of different potentials when discharging and recharging.And when discharge earlier by the battery circuit discharge of high potential, when two Battery pack group circuit current potentials are identical by the time, discharge simultaneously by two Battery pack group circuit current potentials again, so just can promote the efficient that discharges and recharges.Therefore need badly and will contain less transistorized selector circuit, and can when discharging and recharging, effectively isolate the design of two groups of different potentials battery circuits, to reduce cost and to improve efficiency for charge-discharge.
Summary of the invention
Therefore, the objective of the invention is to propose a kind of less transistorized charge-discharge controller that has.
Another object of the present invention is to propose a kind of charge-discharge controller that can effectively isolate the battery circuit of two groups of different voltages when discharging and recharging.
Another purpose of the present invention is to propose a kind of charge-discharge controller that is used for portable set, to reduce cost and to promote the efficient that discharges and recharges.
According to above-mentioned purpose, the present invention proposes a kind of charge-discharge controller, comprises selector, charging circuit and at least two battery circuits.Wherein, selector comprises controller, and when the voltage that exports controller to during greater than predetermined voltage, controller can make and discharge and recharge control signal and be in first level, and when the voltage that exports controller to was not more than predetermined voltage, controller can make and discharge and recharge control signal and be in second level; And discharge switch, when the voltage that exports controller to was not more than predetermined voltage, discharge switch can conducting.And each battery circuit comprises first switch and the second switch that connects in the mode of connecting; Battery; And on-off controller.When on-off controller receive first level discharge and recharge control signal the time, can make first switch conduction and make second switch become ideal diode, this moment charging circuit can be to battery charge; And when on-off controller receive second level discharge and recharge control signal the time, can make first switch become ideal diode and make this second switch conducting, this moment, battery can discharge to load system via discharge switch.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of accompanying drawing.
Fig. 1 is the functional block diagram that illustrates an existing charge-discharge controller;
Fig. 2 is the functional block diagram that illustrates existing battery circuit;
Fig. 3 is the functional block diagram that illustrates another existing charge-discharge controller;
Fig. 4 be illustrate a preferred embodiment of the present invention charge-discharge controller functional block diagram;
Fig. 5 is the detail flowchart that illustrates charge and discharge according to a preferred embodiment of the present invention;
Fig. 6 is the functional block diagram of charging running that illustrates the charge-discharge controller of a preferred embodiment of the present invention;
Fig. 7 is the functional block diagram of discharge running that illustrates the charge-discharge controller of a preferred embodiment of the present invention; And
Fig. 8 is the detailed circuit diagram that illustrates the on-off controller of a preferred embodiment of the present invention.
The reference numeral explanation
C11, C12, C13, C14, C31, C32, C33, C34, C35, C36, C41, C42, C43: control signal
40: charge-discharge controller
100: AC/DC converter
101: charging circuit
120,520: the first battery circuits
130,530: the second battery circuits
135: DC-DC converter
150,350,450,550: selector
155,355,455: control module
160,165,170,175,180,185,190,195,360,365,370,375,380,390,460,465,470,475,480: field-effect transistor
199: load system
260,560,760: battery connector
266: the first protection controller signals
268: the second protection controller signals
271,571,771: switch
272,572,772: switch
290,590,790: battery
510: controller
511: transistor
515: discharge switch
505,517,518: end points
570: on-off controller
595,795: the protection controller
1010,1020: ideal diode
602-638: step
1040: the first emitter followers
1045: the second emitter followers
1050: the first logical circuits
1055: the second logical circuits
1060: negative circuit
Embodiment
Please refer to Fig. 4, it is the functional block diagram that illustrates the charge-discharge controller 40 of a preferred embodiment of the present invention.Charge-discharge controller 40 comprises selector 550, charging circuit 101, first battery circuit 520 and second battery circuit 530.Wherein, selector 550 comprises controller 510 and discharge switch 515, and selector 550 can be coupled to AC/DC converter 100 and DC-DC converter 135.In addition, DC-DC converter 135 can be coupled to load system 199.
Next the running how charge-discharge controller 40 discharges and recharges will be described.Fig. 6 is the functional block diagram of charging running that illustrates the charge-discharge controller 40 of a preferred embodiment of the present invention.Please be simultaneously with reference to Fig. 4 and Fig. 6, the operation principles of the charging of charge-discharge controller 40 is described as follows.When external power supply, external power supply can be converted to direct current with alternating current via AC/DC converter 100, and produces the voltage of VA at end points 505 places.When the voltage of VA during greater than predetermined voltage (for example being 17.2 volts), the transistor 511 in the controller 510 can conductings, and produce high level (High) at end points 517 places discharge and recharge control signal (CHG/DIS#=1).Then, this high level discharges and recharges control signal (CHG/DIS#=1) and can be sent to first battery circuit 520 and second battery circuit 530.When the charge protection signal (CHG#) of protecting controller 595 and 795 to be sent is low level (CHG#=0); if the voltage of battery 790 is greater than the voltage of battery 590; and the voltage of end points 518 is more than or equal to the voltage of battery 590, and then charging circuit 101 can charge to battery 590.Next, when the voltage charging of battery 590 when identical with the voltage of battery 790, if the voltage of end points 518 is more than or equal to the voltage of battery 590 and 790, then charging circuit 101 can charge to battery 590 and 790 simultaneously; Owing to be subjected to stopping of ideal diode (switch 772 in the switch 572 in first battery circuit 520 and second battery circuit 530 all becoming ideal diode), but so charged in parallel, and do not have the problem that the higher battery circuit of voltage flows to the lower battery circuit of voltage.Afterwards, when becoming high level (CHG#=1) (temperature that for example is battery is too high, or the situations such as overtension of battery) as if the charge protection signal (CHG#) of protecting controller 595 and 795 to be sent, then can complete charge.
Because the structure of first battery circuit 520 and second battery circuit 530 is identical, therefore the charging with 101 pairs first battery circuits 520 of charging circuit describes.When first battery circuit 520 receive high level discharge and recharge control signal (CHG/DIS#=1) time, the discharging and recharging control signal (CHG/DIS#=1) and can be via battery connector 560 be sent to on-off controller 570 of this high level.On-off controller 570 can make switch 571 conductings, and makes switch 572 become ideal diode, as shown in Fig. 6.When the protection charge protection signal (CHG#) that controller 595 sent is low level (CHG#=0); if the voltage of end points 518 is more than or equal to the voltage of battery 590; then charging circuit 101 can charge to battery 590 via battery connector 560 and switch 572.When the charge protection signal of protecting controller 595 to be produced became high level (CHG#=1), switch 571 can become ideal diode, and switch 572 still is an ideal diode.Because switch 571 forms the back-to-back ideal diode that is connected with 572, so charging circuit 101 can not charge to battery 590 again.Truth table in the on-off controller 570 of above-mentioned charging running can be represented by beneath table 1.
Table 1
| Discharge and recharge control signal (CHG/DIS#) | Charge protection signal (CHG#) | Discharge prevention mark (DIS#) | Switch 571 | |
||
| 1 | 0 | X | ON | Ideal | Charging circuit | 101 is via 590 chargings of 572 pairs of batteries of |
| 1 | 1 | X | Ideal diode | Ideal diode | Do not allow |
Fig. 7 is the functional block diagram of discharge running that illustrates the charge-discharge controller 40 of a preferred embodiment of the present invention.Please be simultaneously with reference to Fig. 4 and Fig. 7, the operation principles of the discharge of charge-discharge controller 40 is described as follows.When the voltage of VA is not more than predetermined voltage (for example being 17.2 volts) (as no external power supply), transistor 511 can end and discharge switch 515 meeting conductings, and therefore discharging and recharging control signal (CHG/DIS#) can be in low level (CHG/DIS#=0) because of resistance R 45 ground connection in the controller 510.Then, this low level control signal (CHG/DIS#=0) that discharges and recharges can be sent to first battery circuit 520 and second battery circuit 530.When the discharge prevention signal (DIS#) of protecting controller 595 and 795 to be sent is low level (DIS#=0); if the voltage of battery 590 is greater than the voltage of battery 790; and the voltage of end points 518 is less than or equal to the voltage of battery 590; then battery 590 is understood via battery connector 560, discharge switch 515 and DC-DC converter 135, and to load system 199 discharges.Next, when the voltage of battery 590 because of the voltage of discharge and battery 790 when identical, if the voltage of end points 518 is less than or equal to the voltage of battery 590 and 790, then battery 590 and battery 790 can be simultaneously to load system 199 discharges; Owing to be subjected to stopping of ideal diode (transistor 771 in the transistor 571 in first battery circuit 520 and second battery circuit 530 all becoming ideal diode), but so parallel discharge, and do not have the problem that the higher battery circuit of voltage flows to the lower battery circuit of voltage.Afterwards, when becoming high level (DIS#=1) (temperature that for example is battery is too high, or the situations such as brownout of battery), then can finish discharge as if the discharge prevention signal (DIS#) of protecting controller 595 and 795 to be sent.
Because the structure of first battery circuit 520 and second battery circuit 530 is identical, therefore the discharge with 520 pairs of load systems 199 of first battery circuit describes.When first battery circuit 520 receives low levelly when discharging and recharging control signal (CHG/DIS#=0), this low level control signal (CHG/DIS#=0) that discharges and recharges can be sent to on-off controller 570 via battery connector 560.On-off controller 570 can make switch 571 become ideal diode, and makes switch 572 conductings, as shown in Fig. 7.When the protection discharge prevention signal (DIS#) that controller 595 sent is low level (DIS#=0); if the voltage of end points 518 is less than or equal to the voltage of battery 590; then battery 590 can discharge to load system 199 via switch 571, battery connector 560, discharge switch 515 and DC-DC converter 135.When discharge prevention signal (DIS#=1) that on-off controller 570 is produced, switch 572 can become ideal diode, and switch 571 still is an ideal diode.Because switch 571 forms the back-to-back ideal diode that is connected with 572, so battery 590 can not discharge to load system 199 again.Truth table in the on-off controller 570 of above-mentioned discharge running can be represented by beneath table 2.
Table 2
| Discharge and recharge control signal (CHG/DIS#) | Charge protection mark (CHG#) | Discharge prevention signal (DIS#) | |
|
|
| 0 | |
0 | Ideal diode | ON | |
| 0 | |
1 | Desirable | Desirable two | Do not allow |
| Diode | Utmost point pipe | Electricity |
From the above, compare (please also refer to Fig. 1 and Fig. 3) with existing selector, selector 550 of the present invention is more less than the employed transistor size of existing selector, so can reduce the efficient consume when discharging and recharging.
Moreover, by above-mentioned Fig. 6 and Fig. 7 as can be known, when the cell potential of battery circuit remnants not simultaneously, charge-discharge controller 40 of the present invention can make the charging earlier of the lower battery circuit of remaining cell potential, when the cell potential of two battery circuit remnants is identical, charging together again.The battery circuit that so can effectively isolate two groups of different potentials is to improve charge efficiency.In like manner, charge-discharge controller of the present invention also can make the discharge earlier of the higher battery circuit of remaining cell potential, when the cell potential of two battery circuit remnants is identical, and discharge together again.The battery circuit that so can effectively isolate two groups of different potentials is to improve discharging efficiency.
Next please refer to Fig. 5 (asking simultaneously with reference to Fig. 6 and Fig. 7), it is the detail flowchart that illustrates charge and discharge according to a preferred embodiment of the present invention.
In Fig. 5, whether the voltage that at first can judge end points 505 places is greater than predetermined voltage (for example being 17.2V) (step 602).If the voltage at end points 505 places is greater than predetermined voltage, then discharging and recharging control signal is high level (CHG/DIS#=1), and can carry out the running (step 604) of charge mode this moment.Next, can judge respectively whether the charge protection signal (CHG#) of first battery circuit 520 is low level (step 606), and whether the charge protection signal (CHG#) of second battery circuit 530 is low level (step 608).Afterwards, if the charge protection signal (CHG#) of first battery circuit 520 is low level (CHG#=0), whether the voltage that then can judge end points 518 is more than or equal to the voltage (step 610) of battery 590; And if the charge protection signal (CHG#) of second battery circuit 530 is low level (CHG#=0), whether the voltage that then can judge end points 518 is more than or equal to the voltage (step 612) of battery 790.Then, if the voltage of end points 518 is more than or equal to the voltage of battery 590, then charging circuit 101 can be to battery 590 chargings (step 614); And if the voltage of end points 518 more than or equal to the voltage of battery 790, then charging circuit 101 can be to battery 790 chargings (step 616).In addition, if the charge protection signal (CHG#) of first battery circuit 520 be high level (CHG#=1), or as if the voltage of end points 518 voltage less than battery 590, battery 590 also do not discharge (step 618) of not charging then.And if the charge protection signal (CHG#) of second battery circuit 530 be high level (CHG#=1), or as if the voltage of end points 518 voltage less than battery 790, battery 790 also do not discharge (step 620) of not charging then.
And if the voltage at end points 505 places is not more than predetermined voltage (for example being 17.2V), then discharging and recharging control signal is low level (CHG/DIS#=0), and can carry out the running (step 622) of discharge mode this moment.Next, can judge respectively whether the discharge prevention signal (DIS#) of first battery circuit 520 is low level (step 624), and whether the discharge prevention signal (DIS#) of second battery circuit 530 is low level (step 626).Afterwards, if the discharge prevention signal (DIS#) of first battery circuit 520 is low level (DIS#=0), can judge then whether the voltage of end points 518 is less than or equal to the voltage (step 628) of battery 590; And, can judge then whether the voltage of end points 518 is less than or equal to the voltage (step 630) of battery 790 if the discharge prevention signal (DIS#) of second battery circuit 530 is low level (DIS#=0).Then, if the voltage of end points 518 is less than or equal to the voltage of battery 590, then battery 590 can be to load system 199 discharges (step 632); And if the voltage of end points 518 is less than or equal to the voltage of battery 790, then battery 790 can be to load system 199 discharges (step 634).In addition, if the discharge prevention signal (DIS#) of first battery circuit 520 be high level (DIS#=1), or as if the voltage of end points 518 voltage greater than battery 590, battery 590 also do not discharge (step 636) of not charging then.And if the discharge prevention signal (DIS#) of second battery circuit 530 be high level (DIS#=1), or as if the voltage of end points 518 voltage greater than battery 790, battery 790 also do not discharge (step 638) of not charging then.
Fig. 8 is the detailed circuit diagram of the on-off controller 570 among Fig. 4.As shown in Figure 8, on-off controller 570 comprises ideal diode circuit 1010, ideal diode circuit 1020, first emitter follower 1040, second emitter follower 1045, first logical circuit 1050, second logical circuit 1055 and negative circuit 1060.Wherein, the purpose of first emitter follower 1040 is for promoting the ability of output current, with the conducting of quickening transistor 571 with end.Similarly, the purpose of second emitter follower 1045 is for promoting the ability of output current, with the conducting of quickening transistor 572 with end.Negative circuit 1060 is anti-phase in order to will discharge and recharge control signal, is CHG#/DIS even also CHG/DIS# is anti-phase.
According to first logical circuit 1050 and table 1 as can be known; when discharging and recharging control signal is that high level (CHG/DIS#=1) and charge protection signal are when being low level (CHG#=0); switch 571 meeting conductings, and switch 572 can become ideal diode, the running of can charging this moment.And be high level (CHG/DIS#=1) and charge protection signal when being high level (CHG#=1) when discharging and recharging control signal, switch 571 and switch 572 all can become ideal diode, can stop the charging running this moment.
According to second logical circuit 1055 and table 2 as can be known; when discharging and recharging control signal is that low level (CHG/DIS#=0) and discharge prevention signal are when being low level (DIS#=0); switch 572 meeting conductings, and switch 571 can become ideal diode, the running of can discharging this moment.And be low level (CHG/DIS#=0) and discharge prevention signal when being high level (DIS#=1) when discharging and recharging control signal, switch 571 and switch 572 all can become ideal diode, can stop the discharge running this moment.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (11)
1. a charge-discharge controller comprises a selector, a charging circuit and at least two battery circuits, wherein:
This selector comprises
One controller, when the voltage that exports this controller to during greater than a predetermined voltage, this controller can make one to discharge and recharge control signal and be in one first level, and when the voltage that exports this controller to is not more than this predetermined voltage, and this controller can make this discharge and recharge control signal to be in one second level; And
One discharge switch, when the voltage that exports this controller to is not more than this predetermined voltage, this discharge switch meeting conducting;
This charging circuit is coupled to this selector; And
These at least two battery circuits be coupled to this controller and this charging circuit and receive that this controller produces this discharge and recharge control signal, wherein, each those battery circuit comprises:
One first switch and a second switch connect in the mode of connecting;
One battery is coupled to second switch; And
One on-off controller, be coupled to this first switch and this second switch and this battery, when this that receives this first level discharges and recharges control signal, can make this first switch conduction and make this second switch become ideal diode, this moment, this charging circuit can be to this battery charge, when this that receives this second level discharges and recharges control signal, can make this first switch become ideal diode and make this second switch conducting; This moment, this battery can discharge to a load system via this discharge switch.
2. charge-discharge controller as claimed in claim 1, wherein, when this that receives this first level discharges and recharges control signal, and the voltage of this battery separately in those battery circuits is not simultaneously, this battery charge that this charging circuit is can be to the voltage in those battery circuits minimum.
3. charge-discharge controller as claimed in claim 1, wherein, when this that receives this first level discharges and recharges control signal, and the voltage of this battery separately in those battery circuits is when identical, and this charging circuit can be simultaneously to each those battery charge in those battery circuits.
4. charge-discharge controller as claimed in claim 1, wherein, each those battery circuit more comprises:
One protection controller; be coupled to this on-off controller, when being in a particular case, can export a charge protection signal to this on-off controller; make this first switch and this second switch form the back-to-back ideal diode that is connected, and this charging circuit is stopped this battery charge.
5. charge-discharge controller as claimed in claim 4, wherein, this particular case comprises the overtension of too high or this battery of the temperature of this battery.
6. charge-discharge controller as claimed in claim 1, wherein, this first level is a high level.
7. charge-discharge controller as claimed in claim 1, wherein, when this that receives this second level discharged and recharged control signal, if the voltage of this battery separately in those battery circuits is not simultaneously, this battery that the voltage in those battery circuits is the highest can be to this load system discharge.
8. charge-discharge controller as claimed in claim 1, wherein, when this that receives this second level discharged and recharged control signal, if when the voltage of this battery separately in those battery circuits is identical, those batteries of each in those battery circuits can be simultaneously to this load system discharge.
9. charge-discharge controller as claimed in claim 1, wherein, each those battery circuit more comprises:
One protection controller; be coupled to this on-off controller, when being in a particular case, can export a discharge prevention signal to this on-off controller; make this first switch and this second switch form the back-to-back ideal diode that is connected, and this battery is stopped this load system discharge.
10. charge-discharge controller as claimed in claim 9, wherein, this particular case comprises the brownout of too high or this battery of the temperature of this battery.
11. charge-discharge controller as claimed in claim 1, wherein, this second level is a low level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100591280A CN100574042C (en) | 2006-03-14 | 2006-03-14 | Charge-discharge controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100591280A CN100574042C (en) | 2006-03-14 | 2006-03-14 | Charge-discharge controller |
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|---|---|
| CN101039040A CN101039040A (en) | 2007-09-19 |
| CN100574042C true CN100574042C (en) | 2009-12-23 |
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| CNB2006100591280A Expired - Fee Related CN100574042C (en) | 2006-03-14 | 2006-03-14 | Charge-discharge controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102684240B (en) * | 2011-03-17 | 2015-01-28 | 上海中兴派能能源科技有限公司 | Management system applied to lithium ion battery and lithium ion battery pack |
| CN103033731A (en) * | 2011-10-08 | 2013-04-10 | 致茂电子股份有限公司 | Solar cell detection method and relevant device |
| CN111934416B (en) * | 2020-08-04 | 2021-12-28 | 山东信通电子股份有限公司 | Uninterrupted power supply battery hot plug device |
| CN112701764A (en) * | 2021-02-07 | 2021-04-23 | 郑州万迪来电子技术有限公司 | Battery charging and discharging protection device and over-discharging protection method |
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