CN205595875U - Power management circuit and power supply unit - Google Patents
Power management circuit and power supply unit Download PDFInfo
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- CN205595875U CN205595875U CN201620329960.7U CN201620329960U CN205595875U CN 205595875 U CN205595875 U CN 205595875U CN 201620329960 U CN201620329960 U CN 201620329960U CN 205595875 U CN205595875 U CN 205595875U
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- power management
- management circuit
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Abstract
The utility model belongs to the technical field of the power management, a power management circuit and power supply unit is provided, power management circuit includes power, group battery and automatic compensation circuit, the power respectively with group battery and load link to each other, the power does simultaneously the load with the group battery power supply, automatic compensation circuit connection in the group battery with between the load, work as the automatic compensation circuit detects the load of load exceedes during the load capacity of power, the switch -on of automatic compensation circuit the group battery to the supply access of load makes the group battery to the load provides electric power compensation, works as in having avoided current power management circuit the load of load exceedes during the load capacity of power, power management chip is locked to die and can not continue to do the problem that the group battery charges. Simultaneously because this circuit does not use power management chip, the cost is reduced.
Description
Technical field
This utility model belongs to technical field of power management, particularly relates to a kind of electric power management circuit and for Denso
Put.
Background technology
In prior art, by power supply simultaneously powering load and when charging the battery, typically can be at electricity
The outfan in source arranges a power management chip, as it is shown in figure 1, what power supply was exported by power management chip
Electric current one tunnel is directly output to load, and the output of another road is that it is charged to battery, power management chip meeting
Load condition according to load is automatically adjusted the size of battery charge, with the preferential demand meeting load.
But, when the load of load exceedes the load-bearing capacity of power supply, such as, in some electrical equipment, point occurs
In the case of peak current, power management chip can be caused locked and make power supply can not continue as battery and be charged,
And power management chip is relatively costly.
Utility model content
The purpose of this utility model embodiment is to provide a kind of electric power management circuit and electric supply installation, it is intended to solve
Certainly the most traditional electric power management circuit powering load at the same time and when charging the battery, when the load of load surpasses
When crossing the load-bearing capacity of power supply, power management chip can be caused locked and make power supply can not continue as battery and carry out
Charging and the high problem of cost.
This utility model embodiment is achieved in that a kind of electric power management circuit, including the electricity being sequentially connected
Source, charge management circuit, battery protecting circuit and set of cells, described power supply is also connected with load, its feature
Being, described electric power management circuit also includes:
Input is connected with the common port of described charge management circuit and described battery protecting circuit, outfan with
The input of described load connects, when the load described load being detected exceedes the load-bearing capacity of described power supply,
Connect the described set of cells supply access to described load, so that described set of cells provides electric power to described load
The auto compensatng circuit compensated.
Further, described electric power management circuit also includes:
It is connected with the outfan of described power supply, described power supply is carried out the bleeder circuit of dividing potential drop；
Controlling end to be connected with the outfan of described bleeder circuit, cold end is connected with the input of described load,
Hot end is connected with the common port of described charge management circuit and described battery protecting circuit, by dividing potential drop electricity
Road detects when non-transformer inputs, and connects the described set of cells supply access to described load, so that described electricity
The on-off circuit of load supplying described in Chi Zuxiang.
Further, described auto compensatng circuit includes the first diode, the second diode and the second filtered electrical
Hold；
The negative electrode of described first diode and the negative electrode of described second diode are connected to the input of described load altogether
End, the anode of described first diode and the anode of described second diode are connected to described charge management circuit altogether
With the common port of described battery protecting circuit, the anode of described first diode and the sun of described second diode
Pole is also by described second filter capacitor ground connection.
Further, described bleeder circuit includes the first resistance and the second resistance；
Described first resistance and described second resistance are sequentially connected in series between the outfan and ground of described power supply, institute
State the outfan that common port is described bleeder circuit of the first resistance and described second resistance.
Further, described on-off circuit includes PMOS and the first filter capacitor；
The grid of described PMOS is the control end of described on-off circuit, and the source electrode of described PMOS is institute
State the cold end of on-off circuit, the hot end that drain electrode is described on-off circuit of described PMOS, institute
State the drain electrode of PMOS by described first filter capacitor ground connection.
Further, described on-off circuit includes PNP type triode and the first filter capacitor；
The base stage of described PNP type triode is the control end of described on-off circuit, described PNP type triode
The cold end of the most described on-off circuit of current collection, the most described switch of transmitting of described PNP type triode
The hot end of circuit, the emitter stage of described PNP type triode is also by described first filter capacitor ground connection.
Further, described set of cells uses lithium battery.
Another object of the present utility model also resides in a kind of electric supply installation of offer, and described electric supply installation includes above-mentioned
Described electric power management circuit.
In embodiment of the present utility model, described electric power management circuit includes power supply, set of cells and automatically mends
Repaying circuit, described power supply is connected with described set of cells and load respectively, described power supply be described load simultaneously with
Described battery-powered, described auto compensatng circuit is connected between described set of cells and described load, works as institute
State auto compensatng circuit when the load-bearing capacity that the load of described load exceedes described power supply being detected, described automatically
Compensating set of cells described in circuit ON, to the supply access of described load, makes described set of cells carry to described load
For electric power compensation, it is to avoid existing electric power management circuit exceedes described power supply when the load of described load
During load-bearing capacity, power management chip by locked and can not continue as described set of cells charging problem.Simultaneously
Because this circuit does not uses power management chip, reduce cost.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of electric power management circuit of the prior art；
Fig. 2 is the function structure chart of the electric power management circuit that this utility model embodiment provides；
Fig. 3 is the circuit structure diagram of the electric power management circuit that this utility model embodiment provides；
Fig. 4 is the circuit structure diagram of the electric power management circuit that another embodiment of this utility model provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically
Embodiment, only in order to explain this utility model, is not used to limit this utility model.
Embodiment one:
This utility model first embodiment provides a kind of electric power management circuit.
Fig. 2 shows the modular structure of the electric power management circuit that this utility model embodiment provides, for the ease of
Illustrate, illustrate only the part relevant to this utility model embodiment.
A kind of electric power management circuit, including the power supply 40 being sequentially connected, charge management circuit 50, battery protection
Circuit 60 and set of cells 70, power supply 40 is also connected with load, and electric current one tunnel of power supply 40 output directly supplies
Give load, separately lead up to charge management circuit 50 and battery protecting circuit 60 is charged for set of cells 70.
Described electric power management circuit also includes:
Input is connected with the common port of charge management circuit 50 and battery protecting circuit 60, and outfan is with negative
The input carried connects, and when the load described load being detected exceedes the load-bearing capacity of power supply 40, connects electricity
Pond group 70 is to the supply access of described load, so that set of cells 70 provides oneself of electric power compensation to described load
Dynamic compensation circuit 30.
In the present embodiment, auto compensatng circuit 30 detects the load-bearing capacity of described load, and it specifically detects former
Reason is: when the load of described load is in normal condition, the voltage of the input of auto compensatng circuit 30 is little
In the voltage of its outfan, now, auto compensatng circuit 30 is in cut-off state, and the power supply of described load is
Directly fed by power supply 40；And when the load of described load is relatively big, the most described load occurs building peak electricity
During stream, because the power supply capacity of power supply 40 is limited, now, the voltage of the input of auto compensatng circuit 30 is big
In the voltage of its outfan, now, auto compensatng circuit 30 turns on, and set of cells 70 is by automatically compensating electricity
Road 30 provides electric power compensation to described load.
As an embodiment of the present utility model, described electric power management circuit also includes:
It is connected with the outfan of power supply 40, power supply 40 is carried out the bleeder circuit 10 of dividing potential drop.
Controlling end to be connected with the outfan of bleeder circuit 10, cold end is connected with the input of described load,
Hot end is connected with the common port of charge management circuit 50 and battery protecting circuit 60, passes through bleeder circuit
10 detect when non-transformer inputs, and connect the set of cells 70 supply access to described load, so that battery
Group 70 on-off circuits 20 to described load supplying.
Fig. 3 shows the circuit structure of the electric power management circuit that this utility model embodiment provides, for the ease of
Illustrate, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, auto compensatng circuit 30 include the first diode D1, second
Diode D2 and the second filter capacitor C2；
The negative electrode of the first diode D1 and the negative electrode of the second diode D2 are connected to the input of described load altogether,
The anode of the first diode D1 and the anode of the second diode D2 are connected to charge management circuit 50 and battery altogether
The common port of protection circuit 60, the anode of the first diode D1 and the anode of the second diode D2 also by
Second filter capacitor C2 ground connection.
In the present embodiment, described load is automatically detected by the first diode D1 and the second diode D2
Load condition, its concrete Cleaning Principle is: when the load of described load is in normal condition, power supply 40
Normally set of cells 70 is charged, described load is powered simultaneously, now, the first diode
The negative electrode of D1 and the negative electrode voltage-to-ground of the second diode D2 anode and the two or two than the first diode D1
The anode tap voltage-to-ground of pole pipe D2 is high, now, and the first diode D1 and the second diode D2 two ends
Pressure drop is negative voltage, and therefore, the first diode D1 and the second diode D2 is in cut-off state, described negative
The power supply carried is directly fed by power supply 40；When the load of described load is relatively big, the most described load out
When now building peak current, because the power supply capacity of power supply 40 is limited, now, the negative electrode and of the first diode D1
The negative electrode voltage-to-ground of the two diode D2 anode than the first diode D1 and the anode of the second diode D2
End voltage-to-ground is low, and now, the pressure drop at the first diode D1 and the second diode D2 two ends is positive voltage,
When this positive voltage reaches conducting voltage (about the 0.15V) of the first diode D1 and the second diode D2,
First diode D1 and the second diode D2 conducting, now, set of cells 70 is by the first diode D1
Electric power compensation is provided to described load with the second diode D2.
As an embodiment of the present utility model, bleeder circuit includes 10 first resistance R1 and the second resistance
R2；
First resistance R1 and the second resistance R2 is sequentially connected in series between the outfan and ground of power supply 40, and first
The outfan that common port is bleeder circuit 10 of resistance R1 and the second resistance R2.
As an embodiment of the present utility model, on-off circuit 20 includes PMOS Q1 and the first filtered electrical
Hold C1；
The grid of PMOS Q1 is the control end of on-off circuit 20, and the source electrode of PMOS Q1 is switch
The cold end of circuit 20, the hot end that drain electrode is on-off circuit 20 of PMOS Q1, PMOS
The drain electrode of pipe Q1 is by the first filter capacitor C1 ground connection.
Fig. 4 shows the circuit structure of the electric power management circuit that another embodiment of this utility model provides, in order to
It is easy to explanation, illustrate only the part relevant to this utility model embodiment.
As another embodiment of the present utility model, on-off circuit includes PNP type triode Q2 and the first filter
Ripple electric capacity C1；
The base stage of PNP type triode Q2 is the control end of on-off circuit 20, the collection of PNP type triode Q2
Electrode is the cold end of on-off circuit 20, the transmitting of PNP type triode Q2 extremely on-off circuit 20
Hot end, the emitter stage of PNP type triode Q2 is also by the first filter capacitor C1 ground connection.
In embodiment of the present utility model, on-off circuit 20 can also use controllable silicon, switch chip etc..
As an embodiment of the present utility model, set of cells 70 uses lithium battery.
Embodiment two:
This utility model the second embodiment provides a kind of electric supply installation.
A kind of electric supply installation, including electric power management circuit.
Fig. 2 shows the modular structure of the electric power management circuit that this utility model embodiment provides, for the ease of
Illustrate, illustrate only the part relevant to this utility model embodiment.
Power supply 40 that described electric power management circuit includes being sequentially connected, charge management circuit 50, battery protection electricity
Road 60 and set of cells 70, power supply 40 is also connected with load, and electric current one tunnel of power supply 40 output directly feeds
Load, separately leads up to charge management circuit 50 and battery protecting circuit 60 is charged for set of cells 70.
Described electric power management circuit also includes:
Input is connected with the common port of charge management circuit 50 and battery protecting circuit 60, and outfan is with negative
The input carried connects, and when the load described load being detected exceedes the load-bearing capacity of power supply 40, connects electricity
Pond group 70 is to the supply access of described load, so that set of cells 70 provides oneself of electric power compensation to described load
Dynamic compensation circuit 30.
In the present embodiment, auto compensatng circuit 30 detects the load-bearing capacity of described load, and it specifically detects former
Reason is: when the load of described load is in normal condition, the voltage of the input of auto compensatng circuit 30 is little
In the voltage of its outfan, now, auto compensatng circuit 30 is in cut-off state, and the power supply of described load is
Directly fed by power supply 40；And when the load of described load is relatively big, the most described load occurs building peak electricity
During stream, because the power supply capacity of power supply 40 is limited, now, the voltage of the input of auto compensatng circuit 30 is big
In the voltage of its outfan, now, auto compensatng circuit 30 turns on, and set of cells 70 is by automatically compensating electricity
Road 30 provides electric power compensation to described load.
As an embodiment of the present utility model, described electric power management circuit also includes:
It is connected with the outfan of power supply 40, power supply 40 is carried out the bleeder circuit 10 of dividing potential drop.
Controlling end to be connected with the outfan of bleeder circuit 10, cold end is connected with the input of described load,
Hot end is connected with the common port of charge management circuit 50 and battery protecting circuit 60, passes through bleeder circuit
10 detect when non-transformer inputs, and connection set of cells 70 is to described load supplying path, so that set of cells
70 to the on-off circuit 20 of described load supplying.
Fig. 3 shows the circuit structure of the electric power management circuit that this utility model embodiment provides, for the ease of
Illustrate, illustrate only the part relevant to this utility model embodiment.
As an embodiment of the present utility model, auto compensatng circuit 30 include the first diode D1, second
Diode D2 and the second filter capacitor C2；
The negative electrode of the first diode D1 and the negative electrode of the second diode D2 are connected to the input of described load altogether,
The anode of the first diode D1 and the anode of the second diode D2 are connected to charge management circuit 50 and battery altogether
The common port of protection circuit 60, the anode of the first diode D1 and the anode of the second diode D2 also by
Second filter capacitor C2 ground connection.
In the present embodiment, described load is automatically detected by the first diode D1 and the second diode D2
Load condition, its concrete Cleaning Principle is: when the load of described load is in normal condition, power supply 40
Normally set of cells 70 is charged, described load is powered simultaneously, now, the first diode
The negative electrode of D1 and the negative electrode voltage-to-ground of the second diode D2 anode and the two or two than the first diode D1
The anode tap voltage-to-ground of pole pipe D2 is high, now, and the first diode D1 and the second diode D2 two ends
Pressure drop is negative voltage, and therefore, the first diode D1 and the second diode D2 is in cut-off state, described negative
The power supply carried is directly fed by power supply 40；When the load of described load is relatively big, the most described load out
When now building peak current, because the power supply capacity of power supply 40 is limited, now, the negative electrode and of the first diode D1
The negative electrode voltage-to-ground of the two diode D2 anode than the first diode D1 and the anode of the second diode D2
End voltage-to-ground is low, and now, the pressure drop at the first diode D1 and the second diode D2 two ends is positive voltage,
When this positive voltage reaches conducting voltage (about the 0.15V) of the first diode D1 and the second diode D2,
First diode D1 and the second diode D2 conducting, now, set of cells 70 is by the first diode D1
Electric power compensation is provided to described load with the second diode D2.
As an embodiment of the present utility model, bleeder circuit includes 10 first resistance R1 and the second resistance
R2；
First resistance R1 and the second resistance R2 is sequentially connected in series between the outfan and ground of power supply 40, and first
The outfan that common port is bleeder circuit 10 of resistance R1 and the second resistance R2.
As an embodiment of the present utility model, on-off circuit 20 includes PMOS Q1 and the first filtered electrical
Hold C1；
The grid of PMOS Q1 is the control end of on-off circuit 20, and the source electrode of PMOS Q1 is switch
The cold end of circuit 20, the hot end that drain electrode is on-off circuit 20 of PMOS Q1, PMOS
The drain electrode of pipe Q1 is by the first filter capacitor C1 ground connection.
Fig. 4 shows the circuit structure of the electric power management circuit that another embodiment of this utility model provides, in order to
It is easy to explanation, illustrate only the part relevant to this utility model embodiment.
As another embodiment of the present utility model, on-off circuit includes PNP type triode Q2 and the first filter
Ripple electric capacity C1；
The base stage of PNP type triode Q2 is the control end of on-off circuit 20, the collection of PNP type triode Q2
Electrode is the cold end of on-off circuit 20, the transmitting of PNP type triode Q2 extremely on-off circuit 20
Hot end, the emitter stage of PNP type triode Q2 is also by the first filter capacitor C1 ground connection.
In embodiment of the present utility model, on-off circuit 20 can also use controllable silicon, switch chip etc..
As an embodiment of the present utility model, set of cells 70 uses lithium battery.
Below in conjunction with operation principle, embodiment of the present utility model is described further:
As a example by Fig. 3, under normal circumstances, the electric current of power supply 40 output is divided into two-way, and a road is directly output to
Load is powered for it, separately leads up to charge management circuit 50 and battery protecting circuit 60 is set of cells
70 are charged, and the first resistance R1 and the second resistance R2 carries out dividing potential drop to power supply 40, makes PMOS
The grid of Q1 is in high level, and the most under normal circumstances, PMOS closes what Q1 was off；When bearing of load
When lotus exceedes the load-bearing capacity of power supply 40, now, set of cells 70 is by the first diode D1 and the two or two
Described load is powered by pole pipe D2, it is to avoid when the load of described load exceedes the load energy of power supply 40
The problem causing power management chip locked during power and set of cells 70 charging can not be continued as.And when there is no power supply
During input, because the second resistance R2 is pulled down to ground, therefore, the grid of PMOS Q1 is in low level,
PMOS conducting Q1, now, set of cells 70 is powered to described load by PMOS Q1,
I.e. in the case of not having power supply input, set of cells 70 can also be that described load supplies as stand-by power supply
Electricity.
In embodiment of the present utility model, described electric power management circuit includes power supply, set of cells and automatically mends
Repaying circuit, described power supply is connected with described set of cells and load respectively, described power supply be described load simultaneously with
Described battery-powered, described auto compensatng circuit is connected between described set of cells and described load, works as institute
State auto compensatng circuit when the load-bearing capacity that the load of described load exceedes described power supply being detected, described automatically
Compensating set of cells described in circuit ON, to the supply access of described load, makes described set of cells carry to described load
For electric power compensation, it is to avoid existing electric power management circuit exceedes described power supply when the load of described load
During load-bearing capacity, power management chip by locked and can not continue as described set of cells charging problem.Simultaneously
Because this circuit does not uses power management chip, reduce cost.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model,
All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all should
Within being included in protection domain of the present utility model.
Claims (8)
1. an electric power management circuit, including the power supply being sequentially connected, charge management circuit, battery protection electricity
Road and set of cells, described power supply is also connected with load, it is characterised in that described electric power management circuit also includes:
Input is connected with the common port of described charge management circuit and described battery protecting circuit, outfan with
The input of described load connects, when the load described load being detected exceedes the load-bearing capacity of described power supply,
Connect the described set of cells supply access to described load, so that described set of cells provides electric power to described load
The auto compensatng circuit compensated.
2. electric power management circuit as claimed in claim 1, it is characterised in that described electric power management circuit is also
Including:
It is connected with the outfan of described power supply, described power supply is carried out the bleeder circuit of dividing potential drop；
Controlling end to be connected with the outfan of described bleeder circuit, cold end is connected with the input of described load,
Hot end is connected with the common port of described charge management circuit and described battery protecting circuit, by dividing potential drop electricity
Road detects when non-transformer inputs, and connects the described set of cells supply access to described load, so that described electricity
The on-off circuit of load supplying described in Chi Zuxiang.
3. electric power management circuit as claimed in claim 1, it is characterised in that described auto compensatng circuit bag
Include the first diode, the second diode and the second filter capacitor；
The negative electrode of described first diode and the negative electrode of described second diode are connected to the input of described load altogether
End, the anode of described first diode and the anode of described second diode are connected to described charge management circuit altogether
With the common port of described battery protecting circuit, the anode of described first diode and the sun of described second diode
Pole is also by described second filter capacitor ground connection.
4. electric power management circuit as claimed in claim 2, it is characterised in that described bleeder circuit includes the
One resistance and the second resistance；
Described first resistance and described second resistance are sequentially connected in series between the outfan and ground of described power supply, institute
State the outfan that common port is described bleeder circuit of the first resistance and described second resistance.
5. electric power management circuit as claimed in claim 2, it is characterised in that described on-off circuit includes
PMOS and the first filter capacitor；
The grid of described PMOS is the control end of described on-off circuit, and the source electrode of described PMOS is institute
State the cold end of on-off circuit, the hot end that drain electrode is described on-off circuit of described PMOS, institute
State the drain electrode of PMOS by described first filter capacitor ground connection.
6. electric power management circuit as claimed in claim 2, it is characterised in that described on-off circuit includes PNP
Type audion and the first filter capacitor；
The base stage of described PNP type triode is the control end of described on-off circuit, described PNP type triode
The cold end of the most described on-off circuit of current collection, the most described switch of transmitting of described PNP type triode
The hot end of circuit, the emitter stage of described PNP type triode is also by described first filter capacitor ground connection.
7. electric power management circuit as claimed in claim 1, it is characterised in that described set of cells uses lithium electricity
Pond.
8. an electric supply installation, it is characterised in that described electric supply installation includes as any one in claim 1～7
Electric power management circuit described in Xiang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329960.7U CN205595875U (en) | 2016-04-19 | 2016-04-19 | Power management circuit and power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329960.7U CN205595875U (en) | 2016-04-19 | 2016-04-19 | Power management circuit and power supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205595875U true CN205595875U (en) | 2016-09-21 |
Family
ID=56934374
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620329960.7U Expired - Fee Related CN205595875U (en) | 2016-04-19 | 2016-04-19 | Power management circuit and power supply unit |
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| CN (1) | CN205595875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217402A (en) * | 2017-07-07 | 2019-01-15 | 神讯电脑(昆山)有限公司 | The control circuit and its control method of cradle |
-
2016
- 2016-04-19 CN CN201620329960.7U patent/CN205595875U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217402A (en) * | 2017-07-07 | 2019-01-15 | 神讯电脑(昆山)有限公司 | The control circuit and its control method of cradle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20200419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |