CN102104177A - Battery charging and discharging path management circuit and method - Google Patents
Battery charging and discharging path management circuit and method Download PDFInfo
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- CN102104177A CN102104177A CN2009102537890A CN200910253789A CN102104177A CN 102104177 A CN102104177 A CN 102104177A CN 2009102537890 A CN2009102537890 A CN 2009102537890A CN 200910253789 A CN200910253789 A CN 200910253789A CN 102104177 A CN102104177 A CN 102104177A
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- electronic installation
- battery module
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- battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a battery charging and discharging path management circuit and method. The battery charging and discharging path management circuit is coupled to a battery module and an electronic device and comprises a first judging circuit, a second judging circuit and a switching circuit, wherein the first judging circuit is used for judging whether the battery module and the electronic device are in a discharging state or a charging state at the same time; the second judging circuit is used for judging whether the electronic device is coupled to the battery module; and the switching circuit is used for forming a charging and discharging path between the battery module and the electronic device when the battery module and the electronic device are simultaneously in the discharging state or the charging state and the electronic device is coupled to the battery module.
Description
Technical field
The invention relates to a kind ofly to discharge and recharge path management circuit and method, and particularly relevant for a kind of battery charging and discharging path management circuit and method.
Background technology
In the epoch now that science and technology is maked rapid progress, along with the universalness of electronic installation, the consumer is except the function to electronic installation requires to some extent, and each enterprise more attempts electronic installation lightening, and satisfying the consumer can portable demand for electronic installation.Electronic installation for example is a notebook computer.Because notebook computer has portability, notebook computer also can be supplied electric power according to the battery module that it disposed under the situation of external power supply not.In this, how to allow battery module supply stable electric power sustainably to electronic installation, real to allow electronic installation can keep its running for important.Wherein, battery module for example is intelligent battery (Smart Battery), and intelligent battery has managerial ability so that relevant battery data to be provided, for example battery status or battery remaining power.
Yet only (System Management Bus SMBus) links up and manages with battery module electronic installation, that is to say that electronic installation only utilizes the mode of software control to come battery is linked up and managed by System Management Bus now.In this, suppose that software can require charging when electronic installation Connected Power source converter (AC Adaptor), and battery also charges according to indication, suppose that software does not demonstrate charging and discharging state (for example electronic installation leaves charged state) immediately when power supply changeover device is pulled out, so, actually battery module can't judge this continuation charging (power supply changeover device is arranged) or this discharges, and causes battery module to shelve (Pending) and to cause electronic installation the situation of unexpected shutdown (Shoutdown) may take place.
Summary of the invention
The invention relates to a kind of battery charging and discharging path management circuit and method, it can determine whether according to the charging and discharging state of battery module and electronic installation forming and discharge and recharge the path, by charge electronic devices or be discharged to electronic installation, so can provide the environment that discharges and recharges of high efficiency and high security for battery module.
According to an aspect of the present invention, propose a kind of battery charging and discharging path management circuit, comprise first decision circuitry, second decision circuitry and switching circuit.First decision circuitry judges whether battery module and electronic installation are in discharge condition or charged state simultaneously.Second decision circuitry judges whether electronic installation couples battery module.Switching circuit is in discharge condition or charged state simultaneously at battery module and electronic installation, and electronic installation forms one between battery module and the electronic installation and discharges and recharges the path when coupling battery module.
According to a further aspect in the invention, a kind of battery charging and discharging path management method is proposed.The battery charging and discharging path management method comprises the following steps.At first, judge whether a battery module and an electronic installation are in a discharge condition or a charged state simultaneously.Then, judge whether electronic installation couples battery module.Afterwards, if battery module and electronic installation are in discharge condition or charged state simultaneously, and electronic installation is when coupling battery module, and one between formation electronic installation and the battery module discharges and recharges the path.
For foregoing of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 illustrates the battery charging and discharging path management circuit application of embodiments of the invention in the schematic diagram of battery module and electronic installation.
Fig. 2 illustrates the calcspar of the battery charging and discharging path management circuit that is Fig. 1.
Fig. 3 illustrates the flow chart of the battery charging and discharging path management circuit of embodiments of the invention.
It is the schematic diagram of the switching circuit among the step S206 of Fig. 2 that Fig. 4 illustrates.
[main element label declaration]
200: electronic installation 190: power supply changeover device
150: battery module 100: battery charging and discharging path management circuit
50: 30: the second decision circuitry of switching circuit
10: the first decision circuitry S202～S208: step
P: discharge and recharge path A～C, S1～S2: end points
T1～T6: switch R1～R2: resistance
Embodiment
Now be described as follows with the embodiment of battery charging and discharging path management circuit application between battery module and electronic installation, please refer to Fig. 1, its battery charging and discharging path management circuit application that illustrates embodiments of the invention is in the schematic diagram of battery module and electronic installation.As shown in Figure 1, battery charging and discharging path management circuit 100 for example couples battery module 150 and electronic installation 200.Suppose that electronic installation 200 connects power supply changeover devices (Adaptor) 190 o'clock, the power supply that power supply changeover device 190 is supplied can be to battery module 150 power (that is battery module charges).Suppose when electronic installation 200 does not connect power supply changeover device 190, but battery module 150 power supplies (that is dump power of battery) are to electronic installation 200.Electronic installation 200 for example is a notebook computer.
Please be simultaneously with reference to Fig. 2 and Fig. 3, Fig. 2 illustrates the calcspar into the battery charging and discharging path management circuit of Fig. 1.Fig. 3 illustrates the flow chart of the battery charging and discharging path management circuit of embodiments of the invention.Battery charging and discharging path management circuit comprises first decision circuitry 10, second decision circuitry 30 and switching circuit 50.The battery charging and discharging path management method can be applicable to aforementioned battery charging and discharging path management circuit 10, and the battery charging and discharging path management method comprises the steps.
In step S202, first decision circuitry 10 judges whether battery module 150 and electronic installation 200 are in discharge condition or charged state simultaneously.If battery module 150 is in discharge condition or charged state simultaneously with electronic installation 200, then execution in step S204; If battery module 150 is not in discharge condition or charged state, then execution in step S208 simultaneously with electronic installation 200.Wherein, electronic installation 200 also comprises charging integrated circuit (Change Integrated Circuit) (not illustrating), and it is to be in charged state or discharge condition that first decision circuitry 10 decides electronic installation 200 according to the charging integrated circuit.
For instance, first decision circuitry 10 for example detects a pin of charging integrated circuit, and this pin can indicate the pin whether power supply changeover device 190 couples electronic installation 200.Suppose that power supply changeover device 190 couples electronic installation 200, pin can learn that electronic installation 200 is in charged state thus.Suppose that power supply changeover device 190 does not couple electronic installation 200, pin can learn that electronic installation 200 may be in discharge condition thus.In an example, this pin for example is the ACOK pin of charging integrated circuit.
In addition, battery module 150 for example also comprises charge protection integrated circuit (not illustrating), and it is to be in charged state or discharge condition that first decision circuitry 10 decides battery module 150 according to the charging integrated circuit.For instance, for example to detect the representative battery module 150 of charge protection integrated circuit be the pin that is in charging and discharging state to first decision circuitry 10.Suppose that the charge protection integrated circuit has in order to represent two pins of charging and discharging state; first decision circuitry 10 can comprise one with door (an AND Gate), and utilize this and door to come whether to be in the charge or discharge state to detect battery module 150 according to the state (for example high potential or electronegative potential) of this two pin.Suppose that this and door are output as the signal of representing high potential " 1 ", represent that then battery module 150 is to be in the charge or discharge state.In an example, this two pin for example is the CHD pin and the DGD pin of charge protection integrated circuit.
Implement in the aspect one, first decision circuitry 10 also comprises a biconditional gate (Exclusive NORGate).For instance, suppose when electronic installation 200 and battery module 150 are in charged state (all signal to the first decision circuitry of high potential " 1 " is represented in input) or discharge condition (all signal to the first decision circuitry of electronegative potential " 0 " is represented in input) simultaneously, first decision circuitry 10 can produce the signal of representing high potential " 1 ", may be for identical with the charging and discharging state of representing electronic installation 200 and battery module 150.So, this judgement is to be realized by the combination of other circuit or electronic component, and the signal signal of high potential or electronegative potential (that is represent) that representative discharges and recharges also can design and adjust according to the circuit in the real work, not as restriction.
In step S204, second decision circuitry 30 judges whether electronic installation 200 couples battery module 150.Couple battery module 150 as if electronic installation 200, then execution in step S206; Do not couple battery module 150 as if electronic installation 200, then execution in step S208.For instance, electronic installation 200 also comprises System Management Bus (the System Management Bus in order to link up with battery module 150, SMBus) (do not illustrate), second decision circuitry 30 is with judged result (for example whether battery module couples with electronic installation) apprizing system bus.Because software is to link up by System Management Bus and entity circuit, in this, software can be confirmed the current state (whether coupling electronic installation to carry out charge or discharge) of battery module 150 thus.
In step S206, switching circuit 50 is in discharge condition or charged state simultaneously at battery module 150 and electronic installation 200, and electronic installation 200 forms one between battery module 150 and the electronic installation 200 and discharges and recharges the path when coupling battery module 150.Now lifting an example is described in detail as follows.
Please refer to Fig. 4, it illustrates the schematic diagram of the switching circuit among the step S206 of Fig. 2.For instance, switching circuit 50 has a plurality of switch elements.Implement in the aspect one, switching circuit 50 for example comprises first to the 6th switch T1～T6.In an example, suppose that the first switch T1 and the first switch T5 are N type MOS (metal-oxide-semiconductor) memory (NMOS), switch T4 and switch T6 are P type MOS (metal-oxide-semiconductor) memory (PMOS), and switch T2 and switch T3 are respectively N type and P type bipolarity junction transistor (BJT) (for example being NPN or PNP).Wherein, the terminal A representative couples the end points of battery module 150, and the terminal B representative couples the end points of electronic installation 200, and end points S1 for example is the output of first decision circuitry 10, and end points S2 for example is the output of second decision circuitry 30.Yet the switch element in the switching circuit 50 also can decide type (for example transistor of NMOS, PMOS or other kind) according to the demand in real the work, is not restriction with this example also.
For instance, the first switch T1 decides conducting or ends second switch T2 and the 3rd switch T3 according to XOR gate.Suppose that first decision circuitry 10 (that is XOR gate) provided the signal of representing high potential " 1 " with the conducting first switch T1 when electronic installation 200 and battery module 150 were in charged state or discharge condition together.
For instance, if when representing the signal of high potential " 1 " by end points S1 input, can make the switch T1 that wins is conducting, and second switch T2 and the 3rd switch T3 are for ending.In this, the voltage on the terminal A (representing battery module 150) can come dividing potential drop by resistance R 1～R2, if resistance R 1 is greater than resistance R 2, this moment resistance R 2 end points C divide a less pressure drop.
In addition, suppose when battery module 150 couples electronic installation 200 that second decision circuitry 30 provides the signal of representing high potential " 1 ", the 4th switch T4 decides conducting or ends the 5th switch T5 according to second decision circuitry.For instance, suppose when battery module 150 couples electronic installation 200 that second decision circuitry 30 provides the signal of representing high potential " 1 " to end the 4th switch T4, the 4th switch formed open circuit and ended the 5th switch T5 this moment.In this, suppose that when the 5th switch T5 is in cut-off state, end points C will can not be connected to earth terminal, so that the less pressure drop of being got on the resistance R 2 allows the 6th switch T6 conducting, cause to form between battery module 150 and the electronic installation 200 to discharge and recharge path P.In other words, the 6th switch T6 is according to first to the 5th switch (T1～T5) determine whether conducting discharging and recharging path P with formation.
In step S208, switching circuit 50 interrupts the path P that discharges and recharges between battery module 150 and the electronic installation 200.For instance, when not being in equal state (for example charging and discharging state) as if electronic installation 200 and battery module 150, switching circuit 50 can not form and discharge and recharge path P.If when battery module 150 did not couple with electronic installation 200, switching circuit 50 also can not form and discharge and recharge path P.In other words, switching circuit 50 only is in equal state at electronic installation 200 and battery module 150, and under the situation that battery module 150 and electronic installation 200 couple, just can form and discharge and recharge path P and charge by electronic installation 200, or be discharged to electronic installation 200 by battery module 150 for battery module 150.So, thus avoid battery module 150 and the state of electronic installation 200 when charge or discharge inconsistent and cause shelve (Pending) (that is may make electronic installation situation of shutdown suddenly).
The above embodiment of the present invention disclosed battery charging and discharging path management circuit and method thereof, be to utilize switching circuit to form or interrupt discharging and recharging the path, with shelve (electronic installation can not shut down of avoiding when the charging and discharging state of battery module and electronic installation is inconsistent, being caused suddenly) according to the state of electronic installation and battery module.Battery charging and discharging path management circuit that the present invention is correlated with and method thereof have the advantage of the environment for use that high efficiency and high security are provided when battery discharges and recharges.
In sum, though the present invention discloses as above with embodiment, so it is not in order to limit the present invention.Those skilled in the art, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (14)
1. battery charging and discharging path management circuit, in order to couple a battery module and an electronic installation, this battery charging and discharging path management circuit comprises:
Whether one first decision circuitry is in a discharge condition or a charged state simultaneously in order to judge this battery module and this electronic installation;
Whether one second decision circuitry couples this battery module in order to judge this electronic installation; And
One switching circuit, in order to being in this discharge condition or this charged state simultaneously at this battery module and this electronic installation, and this electronic installation forms one between this battery module and this electronic installation and discharges and recharges the path when coupling this battery module.
2. circuit according to claim 1, wherein this electronic installation comprises a charging integrated circuit, it is to be in this charged state or this discharge condition that this first decision circuitry decides this electronic installation according to this charging integrated circuit.
3. circuit according to claim 1, wherein this battery module comprises a charge protection integrated circuit, it is to be in this charged state or this discharge condition that this first decision circuitry decides this battery module according to this charging integrated circuit.
4. circuit according to claim 1, wherein this switching circuit is not in order to when this electronic installation couples this battery module, interrupts between this battery module and this electronic installation this and discharges and recharges the path.
5. circuit according to claim 1, wherein this switch element is not in order to when this battery module and this electronic installation are in this charged state or this discharge condition simultaneously, closes between this battery and this electronic installation this and discharges and recharges the path.
6. circuit according to claim 1, wherein this first decision circuitry comprises a biconditional gate.
7. circuit according to claim 6, wherein this switching circuit comprises one first switch, a second switch and one the 3rd switch, this first switch decides conducting or ends this second switch and the 3rd switch according to this XOR gate.
8. circuit according to claim 7, wherein this switching circuit also comprises one the 4th switch and one the 5th switch, the 4th switch decides conducting or ends the 5th switch according to this second decision circuitry.
9. circuit according to claim 8, wherein this switching circuit also comprises one the 6th switch, the 6th switch determines whether conducting according to this first to the 5th switch.
10. battery charging and discharging path management method comprises:
Judge whether a battery module and an electronic installation are in a discharge condition or a charged state simultaneously;
Judge whether this electronic installation couples this battery module; And
If this battery module and this electronic installation are in this discharge condition or this charged state simultaneously, and this electronic installation forms one between this electronic installation and this battery module and discharges and recharges the path when coupling this battery module.
11. method according to claim 10, wherein this charged state of this electronic installation or this discharge condition be according to this electronic installation one the charging integrated circuit decide.
12. method according to claim 10, wherein this charged state of this battery module or this discharge condition are that this charging integrated circuit according to this battery module decides.
13. method according to claim 12 also comprises:
If when not coupling this battery module, then interrupting between this battery module and this electronic installation this, this electronic installation discharges and recharges the path.
14. method according to claim 10 also comprises:
When if this battery module and this electronic installation are not in this charged state or this discharge condition simultaneously, interrupt between this battery module and this electronic installation this and discharge and recharge the path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102537890A CN102104177B (en) | 2009-12-17 | 2009-12-17 | Battery charging and discharging path management circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102537890A CN102104177B (en) | 2009-12-17 | 2009-12-17 | Battery charging and discharging path management circuit and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102104177A true CN102104177A (en) | 2011-06-22 |
| CN102104177B CN102104177B (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102537890A Active CN102104177B (en) | 2009-12-17 | 2009-12-17 | Battery charging and discharging path management circuit and method |
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| Country | Link |
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| CN (1) | CN102104177B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998081A (en) * | 2016-01-22 | 2017-08-01 | 神讯电脑(昆山)有限公司 | Electronic installation and its method for managing charge/discharge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303034A (en) * | 1999-10-29 | 2001-07-11 | 上海伊迪艾电脑科技有限公司 | High-reliability DC power supply repaining device |
| CN2456354Y (en) * | 2000-08-18 | 2001-10-24 | 伦飞电脑实业股份有限公司 | Electric changer |
| CN2475150Y (en) * | 2001-03-06 | 2002-01-30 | 神基科技股份有限公司 | Portable charger |
-
2009
- 2009-12-17 CN CN2009102537890A patent/CN102104177B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998081A (en) * | 2016-01-22 | 2017-08-01 | 神讯电脑(昆山)有限公司 | Electronic installation and its method for managing charge/discharge |
| CN106998081B (en) * | 2016-01-22 | 2020-01-21 | 神讯电脑(昆山)有限公司 | Electronic device and charging and discharging management method thereof |
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| Publication number | Publication date |
|---|---|
| CN102104177B (en) | 2013-12-18 |
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