CN102467210A - Battery control circuit - Google Patents
Battery control circuit Download PDFInfo
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- CN102467210A CN102467210A CN2010105387050A CN201010538705A CN102467210A CN 102467210 A CN102467210 A CN 102467210A CN 2010105387050 A CN2010105387050 A CN 2010105387050A CN 201010538705 A CN201010538705 A CN 201010538705A CN 102467210 A CN102467210 A CN 102467210A
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- battery
- diode
- electronic switch
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- control circuit
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Abstract
The invention relates to a battery control circuit, which comprises an electronic switch, a first battery, a second battery, a first diode and a second diode, wherein the anode of the first battery is connected with the anode of the second battery through the first diode; the cathode of the first battery is connected with the anode of the second battery through the first electronic switch and is connected with the cathode of the second battery through the second diode; the electronic switch is switched on when receiving a first control signal, the first diode and the second diode are switched off, and the first battery and the second battery are connected in series; and the electronic switch is switched off when receiving a second control signal, the first diode and the second diode are switched on, and the first battery and the second battery are connected in parallel. The battery control circuit is capable of controlling a series-parallel connection relation between the first battery and the second battery so as to adjust voltage values output by the first battery and the second battery, thus utilization rate of a power supply is increased and electric energy is saved.
Description
Technical field
The present invention relates to a kind of control circuit, relate in particular to a kind of battery control circuit.
Background technology
Cells in notebook computer adopts the mode of a plurality of lithium battery series connection to come for notebook computer one steady job voltage (being generally 11.1V or 14.8V) to be provided usually.When notebook computer was in standby or dormant state, its required voltage can obviously reduce, but cells in notebook computer is still exported said steady job voltage, has so just reduced the utilization factor of power supply, thereby had caused waste of electric energy.
Summary of the invention
In view of foregoing, be necessary to provide a kind of cell output voltage of controlling to save the battery control circuit of electric energy.
A kind of battery control circuit comprises input end, electronic switch, first and second battery, first and second diode, first and second output terminal, and the positive pole of said first battery links to each other with said first output terminal; And link to each other with the negative electrode of said first diode; The negative pole of said first battery links to each other with first end of said electronic switch, and links to each other with the negative electrode of said second diode, and the positive pole of said second battery links to each other with second end of said electronic switch; And link to each other with the anode of said first diode; The negative pole of said second battery links to each other with said second output terminal, and links to each other with the anode of said second diode, and the 3rd end of said electronic switch links to each other with said input end; When said input end is imported one first control signal; Said electronic switch conducting, said first and second diode ends, said first and second battery series connection; When said input end was imported one second control signal, said electronic switch ended, said first and second diode current flow, said first and second battery parallel connection.
A kind of battery control circuit comprises input end, first and second output terminal, first and second electronic switch, first to the 3rd battery and first to fourth diode, and the positive pole of said first battery links to each other with said first output terminal; And link to each other with the negative electrode of said first and second diode; The negative pole of said first battery links to each other with first end of said first electronic switch, and links to each other with the negative electrode of said the 3rd diode, and the positive pole of said second battery links to each other with second end of said first electronic switch; And link to each other with the anode of said first diode; The negative pole of said second battery links to each other with first end of said second electronic switch, and links to each other with the negative electrode of said the 4th diode, and the positive pole of said the 3rd battery links to each other with second end of said second electronic switch; And link to each other with the anode of said second diode; The negative pole of said the 3rd battery links to each other with said second output terminal, and links to each other with the said the 3rd and the anode of the 4th diode, and the 3rd end of said first and second electronic switch links to each other with said input end; When said input end is imported one first control signal; Said first and second electronic switch conducting, said first to fourth diode ends, said first to the 3rd battery series connection; When said input end was imported one second control signal, said first and second electronic switch ended, said first to fourth diode current flow, said first to the 3rd battery parallel connection.
Compare prior art; Battery control circuit of the present invention is controlled the SP relation of said first and second battery according to the control signal of said input end input through said electronic switch and said first and second diode; To adjust the magnitude of voltage of said first and second battery output; Thereby improved the utilization factor of power supply, saved electric energy.
Description of drawings
Combine preferred embodiments that the present invention is described in further detail with reference to the accompanying drawings:
Fig. 1 is the circuit diagram of battery control circuit first preferred embodiments of the present invention.
Fig. 2 is the circuit diagram of battery control circuit second preferred embodiments of the present invention.
The main element symbol description
Input end IN1, IN2
Output terminal BAT1+, BAT1-, BAT2+, BAT2-
Electronic switch Q1-Q3
Battery B1-B5
Diode D1-D6
Embodiment
Please refer to Fig. 1, first preferred embodiments of battery control circuit 10 of the present invention comprises an input end IN1, two output terminal BAT1+, BAT1-, an electronic switch Q1, two battery B1, B2 and two diode D1, D2.
The positive pole of said battery B1 links to each other with said output terminal BAT1+, and links to each other with the negative electrode of said diode D1.The negative pole of said battery B1 links to each other with first end of said electronic switch Q1, and links to each other with the negative electrode of said diode D2.The positive pole of said battery B2 links to each other with second end of said electronic switch Q1, and links to each other with the anode of said diode D1.The negative pole of said battery B2 links to each other with said output terminal BAT1-, and links to each other with the anode of said diode D2.The 3rd end of said electronic switch Q1 links to each other with said input end IN1, is used to be received from the control signal of said input end IN1 input.
In this embodiment; Said battery control circuit 10 is located in the notebook computer (figure does not show); Said input end IN1 links to each other with the power-supply management system or the South Bridge chip of said notebook computer, is used to be received from the control signal of said power-supply management system or South Bridge chip output.Said output terminal BAT1+, BAT1-output voltage are said notebook computer power supply.Said battery B1, B2 are specification of the same race and the identical battery of voltage.Said electronic switch Q1 is the NMOS FET, and first end of said electronic switch Q1, second end and the 3rd end be source electrode, drain electrode and the grid of corresponding NMOS FET respectively.
When said notebook computer operate as normal; Said input end IN1 receives the power-supply management system of said notebook computer or first control signal of South Bridge chip output; Said electronic switch Q1 conducting; Said diode D1, D2 end, said battery B1, B2 series connection, and the voltage of said output terminal BAT1+, BAT1-output is the voltage sum of said battery B1, B2.
When said notebook computer is in dormancy or holding state; Said input end IN1 receives the power-supply management system of said notebook computer or second control signal of South Bridge chip output; Said electronic switch Q1 ends; Said diode D1, D2 conducting, said battery B1, B2 parallel connection, the voltage of said output terminal BAT1+, BAT1-output is the voltage of said battery B1, B2.
When other energy such as utilizing sun power is said two battery B1, B2 charging; Said input end IN1 receives the power-supply management system of said notebook computer or second control signal of South Bridge chip output; Said electronic switch Q1 ends; Said diode D1, D2 conducting, said battery B1, B2 parallel connection.At this moment, impressed voltage only need be slightly larger than the voltage of said battery B1, B2, can charge to said battery B1, B2.In this embodiment, said first control signal is a high level signal, and said second control signal is a low level signal.
Please continue with reference to figure 2, second preferred embodiments of battery control circuit 20 of the present invention comprises an input end IN2, two output terminal BAT2+, BAT2-, two electronic switch Q2, Q3, three battery B3-B5 and four diode D3-D6.
The positive pole of said battery B3 links to each other with said output terminal BAT2+, and links to each other with the negative electrode of said diode D3, D4.The negative pole of said battery B3 links to each other with first end of said electronic switch Q2, and links to each other with the negative electrode of said diode D5.The positive pole of said battery B4 links to each other with second end of said electronic switch Q2, and links to each other with the anode of said diode D3.The negative pole of said battery B4 links to each other with first end of said electronic switch Q3, and links to each other with the negative electrode of said diode D6.The positive pole of said battery B5 links to each other with second end of said electronic switch Q3, and links to each other with the anode of said diode D4.The negative pole of said battery B5 links to each other with said output terminal BAT2-, and links to each other with the anode of said diode D5, D6.The 3rd end of said electronic switch Q2, Q3 links to each other with said input end IN2, is used to be received from the control signal of said input end IN2 input.
In this embodiment; Said battery control circuit 20 is located in the notebook computer (figure does not show); Said input end IN2 links to each other with the power-supply management system or the South Bridge chip of said notebook computer, is used to be received from the control signal of said power-supply management system or South Bridge chip output.Said output terminal BAT2+, BAT2-output voltage are said notebook computer power supply.Said battery B3-B5 is specification of the same race and the identical battery of voltage.Said electronic switch Q2, Q3 are the NMOS FET, and first end of said electronic switch Q2, Q3, second end and the 3rd end be source electrode, drain electrode and the grid of corresponding NMOS FET respectively.
When said notebook computer operate as normal; Said input end IN2 receives the power-supply management system of said notebook computer or first control signal of South Bridge chip output; Said electronic switch Q2, Q3 conducting; Said diode D3-D6 ends, said battery B3-B5 series connection, and the voltage of said output terminal BAT2+, BAT2-output is the voltage sum of said battery B3-B5.
When said notebook computer is in dormancy or holding state; Said input end IN2 receives the power-supply management system of said notebook computer or second control signal of South Bridge chip output; Said electronic switch Q2, Q3 end; Said diode D3-D6 conducting, said battery B3-B5 parallel connection, the voltage of said output terminal BAT2+, BAT2-output is the voltage of said battery B3-B5.
When other energy such as utilizing sun power is said battery B3-B5 charging; Said input end IN2 receives the power-supply management system of said notebook computer or second control signal of South Bridge chip output; Said electronic switch Q2, Q3 end; Said diode D3-D6 conducting, said battery B3-B5 parallel connection.At this moment, impressed voltage only need be slightly larger than the voltage of said battery B3-B5, can charge to said battery B3-B5.In this embodiment, said first control signal is a high level signal, and said second control signal is a low level signal.
In other embodiments, said battery control circuit 10,20 can be located in other electronic equipment that need use electric battery, and corresponding power-supply management system or chip link to each other with the reception control signal in said input end IN1, IN2 and the said electronic equipment; Said electronic switch Q1-Q3 can be PMOS FET, triode and other has the switch of identical function, and at this moment, the high-low level of said first and second control signal can adjust accordingly according to actual conditions; And in other embodiments; The number of the battery that said battery control circuit is included can adjust accordingly according to actual conditions; When battery of every increase, the number of electronic switch should increase by one accordingly, and the number of diode should increase by two accordingly.
Claims (6)
1. a battery control circuit comprises input end, electronic switch, first and second battery, first and second diode, first and second output terminal, and the positive pole of said first battery links to each other with said first output terminal; And link to each other with the negative electrode of said first diode; The negative pole of said first battery links to each other with first end of said electronic switch, and links to each other with the negative electrode of said second diode, and the positive pole of said second battery links to each other with second end of said electronic switch; And link to each other with the anode of said first diode; The negative pole of said second battery links to each other with said second output terminal, and links to each other with the anode of said second diode, and the 3rd end of said electronic switch links to each other with said input end; When said input end is imported one first control signal; Said electronic switch conducting, said first and second diode ends, said first and second battery series connection; When said input end was imported one second control signal, said electronic switch ended, said first and second diode current flow, said first and second battery parallel connection.
2. battery control circuit as claimed in claim 1 is characterized in that: said electronic switch is a NMOS FET, and first end of said electronic switch, second end and the 3rd end be source electrode, drain electrode and the grid of corresponding NMOS FET respectively.
3. battery control circuit as claimed in claim 1 is characterized in that: said first and second battery is the battery that specification of the same race and voltage equate.
4. a battery control circuit comprises input end, first and second output terminal, first and second electronic switch, first to the 3rd battery and first to fourth diode, and the positive pole of said first battery links to each other with said first output terminal; And link to each other with the negative electrode of said first and second diode; The negative pole of said first battery links to each other with first end of said first electronic switch, and links to each other with the negative electrode of said the 3rd diode, and the positive pole of said second battery links to each other with second end of said first electronic switch; And link to each other with the anode of said first diode; The negative pole of said second battery links to each other with first end of said second electronic switch, and links to each other with the negative electrode of said the 4th diode, and the positive pole of said the 3rd battery links to each other with second end of said second electronic switch; And link to each other with the anode of said second diode; The negative pole of said the 3rd battery links to each other with said second output terminal, and links to each other with the said the 3rd and the anode of the 4th diode, and the 3rd end of said first and second electronic switch links to each other with said input end; When said input end is imported one first control signal; Said first and second electronic switch conducting, said first to fourth diode ends, said first to the 3rd battery series connection; When said input end was imported one second control signal, said first and second electronic switch ended, said first to fourth diode current flow, said first to the 3rd battery parallel connection.
5. battery control circuit as claimed in claim 4; It is characterized in that: said first and second electronic switch is the NMOS FET, and first end of said first and second electronic switch, second end and the 3rd end be source electrode, drain electrode and the grid of corresponding NMOS FET respectively.
6. battery control circuit as claimed in claim 4 is characterized in that: said first to the 3rd battery is the battery that specification of the same race and voltage equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105387050A CN102467210A (en) | 2010-11-10 | 2010-11-10 | Battery control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105387050A CN102467210A (en) | 2010-11-10 | 2010-11-10 | Battery control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102467210A true CN102467210A (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105387050A Pending CN102467210A (en) | 2010-11-10 | 2010-11-10 | Battery control circuit |
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| CN (1) | CN102467210A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191406A (en) * | 1997-02-10 | 1998-08-26 | 日本电气株式会社 | Portable electronic device and battery pack saving power consumption |
| JPH11299112A (en) * | 1998-04-09 | 1999-10-29 | Okamura Kenkyusho:Kk | Series-parallel switching power supply device |
| CN2610547Y (en) * | 2003-03-21 | 2004-04-07 | 比亚迪股份有限公司 | Charge-discharge circuit of lithium secondary battery for note-book type computer |
| CN101442259A (en) * | 2007-11-19 | 2009-05-27 | 王宏图 | DC parallel-serial transition electric power system |
| US20100117600A1 (en) * | 2007-04-24 | 2010-05-13 | Andras Fazakas | Battery charging circuit |
-
2010
- 2010-11-10 CN CN2010105387050A patent/CN102467210A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191406A (en) * | 1997-02-10 | 1998-08-26 | 日本电气株式会社 | Portable electronic device and battery pack saving power consumption |
| JPH11299112A (en) * | 1998-04-09 | 1999-10-29 | Okamura Kenkyusho:Kk | Series-parallel switching power supply device |
| CN2610547Y (en) * | 2003-03-21 | 2004-04-07 | 比亚迪股份有限公司 | Charge-discharge circuit of lithium secondary battery for note-book type computer |
| US20100117600A1 (en) * | 2007-04-24 | 2010-05-13 | Andras Fazakas | Battery charging circuit |
| CN101442259A (en) * | 2007-11-19 | 2009-05-27 | 王宏图 | DC parallel-serial transition electric power system |
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Application publication date: 20120523 |