CN207218357U - Multivoltage battery parallel circuit - Google Patents
Multivoltage battery parallel circuit Download PDFInfo
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- CN207218357U CN207218357U CN201720986800.4U CN201720986800U CN207218357U CN 207218357 U CN207218357 U CN 207218357U CN 201720986800 U CN201720986800 U CN 201720986800U CN 207218357 U CN207218357 U CN 207218357U
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Abstract
A kind of multivoltage battery parallel circuit is the utility model is related to, including multiple battery circuit units being connected in parallel, each battery circuit unit include battery, cell switch circuit, voltage decision circuit；Battery and cell switch circuit connected in series, cell switch circuit are used to control whether respective battery circuit connects；Voltage decision circuit is arranged between battery and cell switch circuit, and voltage decision circuit is used to be compared the cell voltage of multiple battery circuit units, and controls the cell switch circuit turn-on being connected with cell voltage the higher person.The utility model has the advantages that when polylith cell voltage is equal, powered jointly by polylith battery；When polylith cell voltage does not wait, current battery level is compared by the voltage decision circuit of every piece of battery connection, control the cell switch circuit turn-on of high voltage in polylith battery, and high voltage battery in polylith battery is connected, the seamless switching of batteries in parallel connection can be achieved, prevent reverse battery to charge.
Description
Technical field
Battery powered field is the utility model is related to, specifically, is related to a kind of multivoltage battery parallel circuit.
Background technology
With the development of science and technology electronic installation has become an indispensable part, such as hand in our daily lifes
Machine or notebook computer, and the most important use condition of electronic installation is exactly power supply, conventional electronic device power is electricity at present
Pond.
By taking notebook computer as an example, notebook computer typically has two kinds of power supply modes, and a kind of power supply mode is to pass through outside
Power supply adaptor is powered, and another power supply mode is to be powered by built-in lithium battery, wherein, under the conditions of lithium battery power supply, typically
It can only work a few houres.
Therefore, powered for a long time to realize, it is general that more batteries offer electricity are installed by the way of a battery case is added
Power, it is connected serially, must be operated under equipment shutdown situation if multiple batteries are adopted.If multiple batteries are using simultaneously
Connection mode, every piece of battery is needed to be connected with a switch, and two pieces of batteries do parallel connection, electronic installation is selected by unlatching either switch
Select only can not support the hot plug of battery by which block battery powered, such a mode same time by one piece of battery powered,
If thinking, replacing battery must shut off device power supply (DPS) and be operated again.
Utility model content
The purpose of this utility model is to be directed to above-mentioned technical problem, there is provided a kind of multivoltage battery parallel circuit.
The technical solution of the utility model is：A kind of multivoltage battery parallel circuit, including multiple batteries being connected in parallel
Circuit unit, each battery circuit unit include battery, cell switch circuit, voltage decision circuit；The battery with it is described
Cell switch circuit connected in series, the cell switch circuit are used to control whether respective battery circuit connects；The voltage judges electricity
Road is arranged between the battery and the cell switch circuit, and the voltage decision circuit is used for multiple battery circuit units
Cell voltage be compared, and control the cell switch circuit turn-on that is connected with cell voltage the higher person.
Preferably, the voltage decision circuit includes the equal divider resistance of voltage comparator circuit and 4 resistances；It is described
Voltage comparator circuit includes in-phase input end, inverting input and compares output end, and 4 divider resistances are respectively with phase point
Piezoresistance, anti-phase divider resistance, ground connection divider resistance and negative pole divider resistance；The same phase divider resistance is arranged at the battery
Between positive pole and the in-phase input end, the anti-phase divider resistance be arranged at the anode and the inverting input it
Between, the ground connection divider resistance is arranged between the in-phase input end and ground, and the negative pole divider resistance is arranged at described anti-
Between phase input and the GND.
Preferably, the cell switch circuit uses nmos switch pipe, described in the grid G connection of the nmos switch pipe
Compare output end, the drain D of the nmos switch pipe connects the GND, the source S ground connection of the nmos switch pipe.
Preferably, the battery of each battery circuit unit, cell switch circuit, voltage decision circuit all same.
Preferably, the cell switch circuit of each battery circuit unit, voltage decision circuit all same.
Preferably, the multivoltage battery parallel circuit includes 2 battery circuit units, respectively the first battery circuit
Unit and the second battery circuit unit；First battery B1 voltages of the first battery circuit unit are more than second battery electricity
During the second battery B2 voltages of road unit, the first of the first battery circuit unit compares output end output high level, described
The first cell switch circuit Q1 conductings of first battery circuit unit；And the second of the second battery circuit unit compares output
End output low level, the second cell switch circuit Q2 cut-offs of the second battery circuit unit.
Preferably, the multivoltage battery parallel circuit includes 2 battery circuit units, respectively the first battery circuit
Unit and the second battery circuit unit；First battery B1 voltages of the first battery circuit unit are less than second battery electricity
During the second battery B2 voltages of road unit, the first of the first battery circuit unit compares output end output low level, described
The first cell switch circuit Q1 cut-offs of first battery circuit unit；And the second of the second battery circuit unit compares output
End output high level, the second cell switch circuit Q2 conductings of the second battery circuit unit.
Preferably, the multivoltage battery parallel circuit includes 2 battery circuit units, respectively the first battery circuit
Unit and the second battery circuit unit；First battery B1 voltages of the first battery circuit unit are equal to second battery electricity
During the second battery B2 voltages of road unit, the first of the first battery circuit unit compares output end output high level, described
The first cell switch circuit Q1 conductings of first battery circuit unit；And the second of the second battery circuit unit compares output
End output high level, the second cell switch circuit Q2 conductings of the second battery circuit unit.
The utility model having the beneficial effect that compared with prior art：
1) this new a kind of multivoltage battery parallel circuit of offer, including multiple battery circuit units being connected in parallel, and
When polylith cell voltage is equal, powered jointly by polylith battery；When polylith cell voltage does not wait, connected by every piece of battery
Voltage decision circuit is compared to current battery level, controls the cell switch circuit turn-on of high voltage in polylith battery,
And high voltage battery in polylith battery is connected, you can the seamless switching of batteries in parallel connection is realized, prevents reverse battery to charge, and
Support the hot plug of battery；
2) this new multivoltage battery parallel circuit, can be when polylith cell voltage wait, used in automatic decision
Battery, if cell voltage is identical, polylith battery works simultaneously；
3) this new multivoltage battery parallel circuit can also realize the effect for preventing battery reversal connection in battery reversal connection.
Brief description of the drawings
Fig. 1 is multivoltage battery parallel circuit structural representation；
Fig. 2 is the battery parallel circuit structural representation that 2 battery circuit units are formed.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described.
Referring to Fig. 1, the utility model discloses a kind of multivoltage battery parallel circuit, including multiple battery electricity being connected in parallel
Road unit, each battery circuit unit include battery, cell switch circuit, voltage decision circuit；Wherein, battery is opened with battery
Circuit connected in series is closed, for whether controlling respective battery circuit communication.Voltage decision circuit is arranged at battery and cell switch circuit
Between, for cell switch circuit turn-on or the cut-off of respective battery to be compared and controlled to the voltage of respective battery.
Wherein, voltage decision circuit includes the equal divider resistance of voltage comparator circuit and 4 resistances.Voltage comparator circuit
Including in-phase input end, inverting input and compare output end, 4 divider resistances are respectively with phase divider resistance, anti-phase partial pressure
Resistance, ground connection divider resistance and negative pole divider resistance.Wherein, respective battery positive pole and homophase input are arranged at phase divider resistance
Between end, anti-phase divider resistance is arranged between respective battery positive pole and inverting input, and ground connection divider resistance is arranged at same phase
Between input and ground, negative pole divider resistance is arranged between inverting input and respective battery negative pole.
Cell switch circuit uses nmos switch pipe, and output end, nmos switch pipe are compared in the grid G connection of nmos switch pipe
Drain D connection respective battery negative pole, nmos switch pipe source S ground connection.When comparing output end output high level, NMOS is opened
Pipe conducting is closed, by respective battery circuit communication；When comparing output end output low level, the cut-off of nmos switch pipe will corresponding electricity
Pond circuit does not connect.
It should be noted that this new multiple battery circuit unit is used and is connected in parallel, in each battery circuit unit
Cell switch circuit, voltage decision circuit structure are identical, and this is new identical to cell voltage in each battery circuit unit
Whether do not limit, when polylith cell voltage is equal, powered jointly by polylith battery；When polylith cell voltage does not wait, by
The voltage decision circuit of every piece of battery connection is compared to current battery level, controls the battery of high voltage in polylith battery
On-off circuit is turned on, and high voltage battery in polylith battery is connected.
It is excellent as a kind of embodiment of this novel multi-voltage battery parallel circuit, multivoltage battery parallel circuit referring to Fig. 2
Choosing includes 2 battery circuit units, respectively the first battery circuit unit and the second battery circuit unit.First battery circuit list
Member is identical with cell switch circuit, voltage decision circuit structure in the second battery circuit unit.
First battery circuit unit includes the first battery B1, the first cell switch circuit Q1, first voltage decision circuit, the
One battery B1 is connected with the first cell switch circuit Q1, and the first battery B1 circuit communications are controlled by the first cell switch circuit Q1
Whether.First voltage decision circuit includes first voltage comparison circuit U1 and 4 resistances equal divider resistance, first voltage ratio
Include the first in-phase input end compared with circuit U 1, the first inverting input and first compares output end.4 divider resistances are respectively
Together phase divider resistance R1, the first anti-phase divider resistance R2, the first ground connection divider resistance R5 and the first negative pole divider resistance R6.Its
In, first is arranged between the first battery B1 positive poles and the first in-phase input end with phase divider resistance R1, the first anti-phase partial pressure electricity
Resistance R2 is arranged between the first battery B1 positive poles and the first inverting input, and the first ground connection divider resistance R5 is arranged at the first same phase
Between input and ground, the first negative pole divider resistance R6 is arranged between the first inverting input and the first battery B1 negative poles.
Judge likewise, the second battery circuit unit includes the second battery B2, the second cell switch circuit Q2, second voltage
Circuit, the second battery B2 are connected with the second cell switch circuit Q2, and the second battery B2 is controlled by the second cell switch circuit Q2
Whether is circuit communication.Second voltage decision circuit includes second voltage comparison circuit U2 and 4 resistances equal divider resistance, the
Two voltage comparator circuit U2 include the second in-phase input end, the second inverting input and second compares output end.4 divider resistances
Respectively second the same as phase divider resistance R3, the second anti-phase divider resistance R4, the second ground connection divider resistance R7 and the second negative pole partial pressure
Resistance R8.Wherein, second it is arranged at phase divider resistance R3 between the second battery B2 positive poles and the second in-phase input end, second is anti-
Phase divider resistance R4 is arranged between the second battery B2 positive poles and the second inverting input, and the second ground connection divider resistance R7 is arranged at
Between second in-phase input end and ground, the second negative pole divider resistance R8 is arranged at the second inverting input and the second battery B2 negative poles
Between.
Output end, the first cell switch circuit Q1 drain D are compared in first cell switch circuit Q1 grid G connection first
Connect the first battery B1 negative poles, the first cell switch circuit Q1 source S ground connection.When first compare output end output high level
When, the first cell switch circuit Q1 conductings, by the first battery B1 circuit communications；When first compares output end output low level,
First cell switch circuit Q1 ends, and the first battery B1 circuits are not connected.
Likewise, output end, the second cell switch circuit Q2 are compared in the second cell switch circuit Q2 grid G connection second
Drain D connect the second battery B2 negative poles, the second cell switch circuit Q2 source S ground connection.When second compare output end output
During high level, the second cell switch circuit Q2 conductings, by the second battery B2 circuit communications；Compare output end and export low electricity when second
Usually, the second cell switch circuit Q2 ends, and the second battery B2 circuits are not connected.
Herein it should be noted that when the first battery B1 voltages are more than the second battery B2 voltages, the first anti-phase partial pressure electricity
The total voltage for hindering R2 and the first negative pole divider resistance R6 is more than first with the ground connection divider resistances of phase divider resistance R1 and first R5's
Total voltage, meanwhile, the second total voltage that divider resistance R7 is grounded with phase divider resistance R3 and second is more than the second anti-phase partial pressure electricity
Hinder R4 and the second negative pole divider resistance R8 total voltage.Wherein, first the same as the ground connection divider resistances of phase divider resistance R1 and first R5
Total voltage it is equal with the second ground connection divider resistance R7 total voltage with phase divider resistance R3 with second.Thus obtain：First is anti-
It is anti-phase more than second with phase divider resistance R3 voltages with phase divider resistance R1 voltages, second that phase divider resistance R2 voltages are more than first
Divider resistance R4 voltages, and first is equal with phase divider resistance R3 voltages with second with phase divider resistance R1 voltages.
Thus obtain the first homophase input terminal voltage and be more than the first reverse inter-input-ing voltage, and first compares output end output height
Level, the first cell switch circuit Q1 conductings, by the first battery B1 circuit communications.Meanwhile second homophase input terminal voltage be less than
Second anti-phase input terminal voltage, and second compares output end output low level, the second cell switch circuit Q2 cut-offs, the second battery
B2 circuits do not connect.VCC is turned into as load etc. by the first larger battery B1 of voltage in the first battery B1 and the second battery B2
Power supply.And when the first cell switch circuit Q1 conductings and the second cell switch circuit Q2 cut-offs, it can further prevent the first electricity
Pond B1 reversely charges to the second battery B2.
Likewise, when the first battery B1 voltages are less than the second battery B2 voltages, first voltage decision circuit exports low electricity
Flat, control the first cell switch circuit Q1 cut-offs, the first battery B1 circuits do not connect；Second voltage decision circuit output simultaneously is high
Level, control the second cell switch circuit Q2 conductings, by the second battery B2 circuit communications.I.e. by the first battery B1 and the second battery
The second larger battery B2 of voltage turns into power supply VCC as the power supply such as load in B2.And when the first cell switch circuit Q1 cut-off and
When second cell switch circuit Q2 is turned on, the second battery B2 can be further prevented reversely to be charged to the first battery B1.
And according to described above, when the first battery B1 voltages are equal to the second battery B2 voltages, the first cell switch electricity
Road Q1 is both turned on the second cell switch circuit Q2, and by the first battery B1 circuit communications and by the second battery B2 circuit communications,
Turn into power supply VCC jointly by the first battery B1 and the second battery B2 as the power supply such as load.
Certainly, the multivoltage battery parallel circuit in Fig. 2 is to include 2 battery circuit units, and finally by the first battery
Voltage the greater turns into power supply VCC as the power supply such as load in B1 and the second battery B2.It can be appreciated that as described above, when more
Voltage battery parallel circuit finally turns into power supply using when being more than 2 battery circuit units by voltage the greater in multiple batteries
VCC is the power supply such as load.
With continued reference to Fig. 2, this new multivoltage battery parallel circuit can also realize the effect for preventing battery reversal connection, i.e., the
The first battery B1 positive poles connection first of one battery circuit unit is with phase divider resistance R1, the first anti-phase divider resistance R2, and first
Battery B1 negative poles connect the first negative pole divider resistance R6, the first cell switch circuit Q1 drain D.If the first battery B1 positive poles with
First battery B1 negative pole reversal connections, then according to above-mentioned analysis, the first homophase input terminal voltage is less than the first reverse inter-input-ing voltage, and
One compares output end output low level, and the first cell switch circuit Q1 cut-offs, the first battery B1 circuits do not connect, with to the first electricity
Pond B1 carries out counnter attack protection.Likewise, the second battery circuit unit can realize the counnter attack protection to the second battery B2.
Finally it should be noted that：Above example is merely to illustrate the technical solution of the utility model, rather than it is carried out
Limitation, although the utility model is described in detail with reference to the foregoing embodiments, one of ordinary skill in the art should
Understand：It can still be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered
Row equivalent substitution.And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model
The scope of technical scheme.
Claims (7)
1. a kind of multivoltage battery parallel circuit, including multiple battery circuit units being connected in parallel, it is characterised in that：Each electricity
Pond circuit unit includes battery, cell switch circuit, voltage decision circuit；The battery and the cell switch circuit string
Connection, the cell switch circuit are used to control whether respective battery circuit connects；The voltage decision circuit is arranged at the electricity
Between pond and the cell switch circuit, the voltage decision circuit is used to carry out the cell voltage of multiple battery circuit units
Compare, and control the cell switch circuit turn-on being connected with cell voltage the higher person；The voltage decision circuit includes voltage ratio
The divider resistance equal compared with circuit and 4 resistances；The voltage comparator circuit includes in-phase input end, inverting input and compared
Output end, 4 divider resistances are respectively with phase divider resistance, anti-phase divider resistance, ground connection divider resistance and negative pole partial pressure
Resistance；The same phase divider resistance is arranged between the anode and the in-phase input end, the anti-phase divider resistance
Be arranged between the anode and the inverting input, it is described ground connection divider resistance be arranged at the in-phase input end with
Between ground, the negative pole divider resistance is arranged between the inverting input and the GND.
2. multivoltage battery parallel circuit according to claim 1, it is characterised in that：The cell switch circuit uses
Nmos switch pipe, the grid G connection relatively output end of the nmos switch pipe, the drain D connection of the nmos switch pipe
The GND, the source S ground connection of the nmos switch pipe.
3. according to the multivoltage battery parallel circuit described in claim any one of 1-2, it is characterised in that：Each battery electricity
The battery of road unit, cell switch circuit, voltage decision circuit all same.
4. according to the multivoltage battery parallel circuit described in claim any one of 1-2, it is characterised in that：Each battery electricity
The cell switch circuit of road unit, voltage decision circuit all same.
5. multivoltage battery parallel circuit according to claim 4, it is characterised in that：The multivoltage battery parallel circuit
Including 2 battery circuit units, respectively the first battery circuit unit and the second battery circuit unit；First battery circuit
When first battery B1 voltages of unit are more than the second battery B2 voltages of the second battery circuit unit, the first battery electricity
The first of road unit compares output end output high level, and the first cell switch circuit Q1 of the first battery circuit unit is led
It is logical；And the second of the second battery circuit unit compares output end output low level, the of the second battery circuit unit
Two cell switch circuit Q2 end.
6. multivoltage battery parallel circuit according to claim 4, it is characterised in that：The multivoltage battery parallel circuit
Including 2 battery circuit units, respectively the first battery circuit unit and the second battery circuit unit；First battery circuit
When first battery B1 voltages of unit are less than the second battery B2 voltages of the second battery circuit unit, the first battery electricity
The first of road unit compares output end output low level, and the first cell switch circuit Q1 of the first battery circuit unit is cut
Only；And the second of the second battery circuit unit compares output end output high level, the of the second battery circuit unit
Two cell switch circuit Q2 are turned on.
7. multivoltage battery parallel circuit according to claim 3, it is characterised in that：The multivoltage battery parallel circuit
Including 2 battery circuit units, respectively the first battery circuit unit and the second battery circuit unit；First battery circuit
When first battery B1 voltages of unit are equal to the second battery B2 voltages of the second battery circuit unit, the first battery electricity
The first of road unit compares output end output high level, and the first cell switch circuit Q1 of the first battery circuit unit is led
It is logical；And the second of the second battery circuit unit compares output end output high level, the of the second battery circuit unit
Two cell switch circuit Q2 are turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720986800.4U CN207218357U (en) | 2017-08-09 | 2017-08-09 | Multivoltage battery parallel circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720986800.4U CN207218357U (en) | 2017-08-09 | 2017-08-09 | Multivoltage battery parallel circuit |
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| Publication Number | Publication Date |
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| CN207218357U true CN207218357U (en) | 2018-04-10 |
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ID=61817881
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720986800.4U Active CN207218357U (en) | 2017-08-09 | 2017-08-09 | Multivoltage battery parallel circuit |
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| Country | Link |
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| CN (1) | CN207218357U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510255A (en) * | 2018-10-31 | 2019-03-22 | 深圳欣旺达智能科技有限公司 | Double cell fast charge structure and mobile terminal |
| CN111293755A (en) * | 2020-03-20 | 2020-06-16 | 烟台艾睿光电科技有限公司 | Protection circuit for equalizing discharge of parallel battery pack and chargeable device |
-
2017
- 2017-08-09 CN CN201720986800.4U patent/CN207218357U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510255A (en) * | 2018-10-31 | 2019-03-22 | 深圳欣旺达智能科技有限公司 | Double cell fast charge structure and mobile terminal |
| CN111293755A (en) * | 2020-03-20 | 2020-06-16 | 烟台艾睿光电科技有限公司 | Protection circuit for equalizing discharge of parallel battery pack and chargeable device |
| CN111293755B (en) * | 2020-03-20 | 2021-11-16 | 烟台艾睿光电科技有限公司 | Protection circuit for equalizing discharge of parallel battery pack and chargeable device |
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