CN109951094A - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN109951094A CN109951094A CN201811453795.6A CN201811453795A CN109951094A CN 109951094 A CN109951094 A CN 109951094A CN 201811453795 A CN201811453795 A CN 201811453795A CN 109951094 A CN109951094 A CN 109951094A
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- primary side
- booster circuit
- supply device
- power supply
- voltage
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Abstract
The invention discloses a kind of power supply device and for the booster circuit of power supply device, booster circuit includes the booster circuit for power supply device, comprising: incoming end is configured to access the DC voltage from battery pack；Transformer group is electrically connected so that the DC voltage accessed boosts to predetermined voltage through transformer group with incoming end；Rectifier bridge is electrically connected with transformer group so that predetermined voltage is converted to high voltage direct current after impulse commutation；Wherein, transformer group includes: the first transformer, including the first primary side and the first secondary side；Second transformer, including the second primary side and the second secondary side；The connection of first primary side and the second primary side is one of to be connected in series or be connected in parallel, and the first secondary connection while with the second pair is the another kind in being connected in series or being connected in parallel.Power supply device disclosed by the invention exportable alternating current while compact-sized be convenient for carrying.
Description
Technical field
The present invention relates to a kind of power supply devices, and in particular to a kind of power supply device for being capable of providing exchange electricity output.
Background technique
With the development of battery technology, electric tool is gradually replacing engine tool.It is similar to engine work to realize
The working effect of work and cruise duration, the rated power and capacity of battery pack are also increasing.
It is worked and is traveled outdoors, AC power source is generally required to use electric tool or facility power to be some；Tradition
Portable power supply, often powered by its internal battery core group, can not if the power consumption of the battery core group of the power supply is complete
Alternating current is persistently provided.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of power supplys for being capable of providing exchange electricity output
Device.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of power supply device, comprising: shell；Multiple battery pack ports are arranged on shell to access multiple battery packs；Boosting electricity
Road is electrically connected with battery pack port increasing the voltage of battery pack to export high-voltage dc voltage；Inverter circuit, with boosting
Circuit is electrically connected using the high-voltage dc voltage inversion for exporting booster circuit as alternating current；Wherein, booster circuit includes: first
Transformer, including the first primary side and the first secondary side；Second transformer, including the second primary side and the second secondary side；First primary side and the
The connection of two primary sides is to be connected in series or one in being connected in parallel, the first secondary connection while secondary with second be series connection or
Another in being connected in parallel.
Further, the first primary side is connected in parallel with the second primary side, and the first pair is connected in series while with the second pair.
Further, booster circuit further include: power switch tube is electrically connected to be connected the with the first primary side or the second primary side
One in one primary side or the second primary side.
Further, booster circuit further include: rectifier bridge, be respectively and electrically connected to first it is secondary while and second it is secondary while so that boosting
The first DC voltage of circuit output.
Further, further includes: controller is electrically connected to power switch tube, is configured as controlling function with certain frequency
The on or off of rate switching tube is so that the first primary side and the oscillation of the second primary side generate primary side pulse voltage.
Further, the value range of the rated power of power supply device is more than or equal to 350W.
A kind of booster circuit for power supply device, comprising: incoming end is configured to access the direct current from battery pack
Pressure；Transformer group is electrically connected so that the DC voltage accessed boosts to predetermined voltage through transformer group with incoming end；Rectification
Bridge is electrically connected with transformer group so that predetermined voltage is converted to high voltage direct current after impulse commutation；Wherein, transformer group packet
It includes: the first transformer, including the first primary side and the first secondary side；Second transformer, including the second primary side and the second secondary side；First is former
The connection of side and the second primary side is one of to be connected in series or be connected in parallel, and the first secondary connection while with the second pair is to connect
Another kind in connecting or being connected in parallel.
Further, the first primary side is connected in parallel with the second primary side, and the first pair is connected in series while with the second pair.
Further, further includes: power switch tube, be electrically connected with the first primary side or the second primary side be connected the first primary side or
One in second primary side.
Further, further includes: power switch tube is electrically connected with the first primary side or the second primary side；Controller is electrically connected
To power switch tube, it is configured as with the on or off of certain frequency-controlled power switching tube so that the first primary side and second
Primary side oscillation generates primary side pulse voltage.
The invention has the beneficial effects that providing a kind of power supply device of compact-sized exportable alternating current being convenient for carrying.
Detailed description of the invention
Fig. 1 is the structure chart of the power supply device as one of embodiment；
Fig. 2 is the system block diagram of power supply device shown in FIG. 1；
Fig. 3 is the circuit diagram of the booster circuit as one of embodiment；
Fig. 4 is the circuit diagram that booster circuit shown in Fig. 3 is in a kind of mode；
Fig. 5 is the circuit diagram that booster circuit shown in Fig. 3 is in another mode；
Fig. 6 is the circuit diagram that booster circuit shown in Fig. 3 is in another mode；
Fig. 7 is the circuit diagram that booster circuit shown in Fig. 3 is in another mode；
Fig. 8 is the graph of relation of the driving condition and inductive current of power switch tube in booster circuit shown in Fig. 3；
Fig. 9 is the circuit diagram of booster circuit as another embodiment, and the first primary side and the second primary side be simultaneously in booster circuit
Connection connection, the first pair are connected in parallel while with the second pair；
Figure 10 is the circuit diagram of booster circuit as another embodiment, the first primary side and the second primary side in the booster circuit
It is connected in series, the first pair is connected in series while with the second pair；
Figure 11 is the circuit diagram of booster circuit as another embodiment, the first primary side and the second primary side in the booster circuit
It is connected in series, the first pair is connected in parallel while with the second pair；
Figure 12 is the circuit diagram of booster circuit as another embodiment, which only includes first primary side and one
A second primary side.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Power supply device 100 referring to fig. 1 and fig. 2, including battery pack port 110 and shell 120.Battery pack port
110 are arranged on the shell 120 of power supply device 100, for receiving battery pack.Specifically, on the shell 120 of power supply device 100
Equipped with multiple battery pack ports 110.In some embodiments, the number of battery pack port 110 is four, in other embodiments
In, the number of battery pack port 110 is two or more.The application is not specifically limited this.
Power supply device 100 can be used for charging with different types of battery pack and/or making have different types of battery
Packet electric discharge.For example, battery pack can be lithium battery pack, lithium-base battery packet, solid state battery packet or graphene battery packet.In some implementations
In example, power supply device 100 can receive and for different voltages, different capabilities, different structure, different shape and size battery
Packet charges and/or these battery packs is made to discharge.For example, power supply device 100 can make voltage rating 18V, 20V, 24V, 28V,
30V, 56V, the battery pack charge or discharge greater than 56V etc..Alternatively, power supply device 100 can make voltage rating in above-mentioned voltage model
The battery pack charge or discharge enclosed.Cell apparatus can also make battery capacity 1.2Ah, 1.3Ah, 1.4Ah, 2.0Ah, 2.4Ah,
The battery pack charge or discharge of 2.6Ah, 3.0Ah.
With reference to power supply device 100 shown in Fig. 2, further include BMS module 130 in the shell 120, power module 140,
Booster circuit 150, inverter circuit 160, controller 170 and exchange interface 180.
BMS module 130 and battery pack port 110 are electrically connected, for realizing the management of charging and discharging of battery pack.Specifically,
BMS module 130 includes connection circuit 131.It connects circuit 131 and battery pack port 110 is electrically connected, for serial or parallel connection electricity
The battery pack that the port Chi Bao 110 is accessed, and export the total voltage Vb of the battery pack of serial or parallel connection.Specifically, being connect in battery pack
When entering to battery pack port 110, BMS module 130 obtains the number of the battery pack of access and the voltage of each battery pack, connection electricity
The battery pack of access is connected in series or in parallel to export the total voltage Vb of battery pack in road 131.
Booster circuit 150 is electrically connected with circuit 131 is connect, for increasing the total voltage of battery pack to export high straightening
Galvanic electricity pressure, high-voltage dc voltage here are greater than the total voltage Vb of battery pack.Booster circuit is illustrated later in association with attached drawing
150。
Inverter circuit 160 and booster circuit 150 are electrically connected the high-voltage dc voltage inversion to export booster circuit 150
For alternating current.
It exchanges interface 180 and inverter circuit 160 is electrically connected to export the alternating current after 160 inversion of inverter circuit.This
Sample is converted to the direct current total voltage Vb of the battery pack of access by power supply device 100 in the case where needing the operating condition using alternating current
Alternating voltage is simultaneously exported through exchange interface 180, thus for exchange power device power supply.In some embodiments, power supply device 100
It may include multiple exchange interfaces 180.Specifically, exchange interface 180 can be three-phase alternating current socket.
Refering to what is shown in Fig. 3, booster circuit 150 includes incoming end 151, transformer group 152, rectifier bridge 153, inductance L and electricity
Hold C.Incoming end 151 is configured to access the total voltage Vb from battery pack.Transformer group 152 includes the first transformer Tr1 and the
Two transformer Tr2, wherein the first transformer Tr1 includes the pair of the first primary side Tr1a and first side Tr1b, the second transformer Tr2 packet
The pair of the second primary side Tr2a and second side Tr2b, the first primary side Tr1a and the connection of the second primary side Tr2a are included to be connected in series or in parallel
One of connection, the connection of the first secondary Tr2b when Tr1b and second is secondary are the another kind in being connected in series or being connected in parallel.
In the embodiment shown in fig. 3, the first primary side Tr1a and the second primary side Tr2a is connected in parallel, and the first pair side Tr1b and second is secondary
Side Tr2b is connected in series.Specifically, the first transformer Tr1 includes two concatenated first primary side Tr1a, two concatenated the
It is equipped with first node 101 between one primary side Tr1a, the second transformer Tr2 includes two the second primary side Tr2a, and two concatenated the
It is equipped with the second node 102 being electrically connected with incoming end 151 between two primary side Tr2a, passes through first node 101 and second node
102 are electrically connected so that the first primary side Tr1a and the second primary side Tr2a are in parallel.
The setting of first transformer Tr1 and the second transformer Tr2 meet electricity while reducing 152 size of transformer group
The demand of the high-power output of source device 100.Specifically, the value range of the rated power of power supply device 100 is more than or equal to 350W.
Further, the value range of the rated power of power supply device 100 is more than or equal to 500W.
First transformer Tr1 and the second transformer Tr2, both can be real using the concatenated connection type of primary side parallel connection and secondary side
The power of existing booster circuit 150 is flowed to protect the electronic component in booster circuit 150 while can also simplify design of transformer,
Reduce the number of turns and intrinsic leakage inductance of transformer.
Booster circuit 150 further includes the power switch tube being electrically connected with the first primary side Tr1a or the second primary side Tr2a.Tool
Body, booster circuit 150 includes the first power switch tube Q1, the second power switch tube Q2, third power switch tube Q3 and the 4th
Power switch tube Q4.Wherein, the source electrode of third power switch tube Q3 is electrically connected to the first primary side Tr1a, third power switch tube
The drain electrode of Q3 is electrically connected to the source electrode of the first power switch tube Q1, and the drain electrode of the first power switch tube Q1 is electrically connected to second
Primary side Tr2a；The drain electrode of second power tube is electrically connected to the second primary side Tr2a, the source electrode ground connection of the second power tube；4th power
The drain electrode of switching tube Q4 is electrically connected to the first primary side Tr1a, and the source electrode of the 4th power switch tube Q4 is electrically connected to third power
The drain electrode of switching tube Q3.First power switch tube Q1, the second power switch tube Q2, third power switch tube Q3 and the 4th power are opened
The grid for closing pipe Q4 is electrically connected to controller 170.Controller 170 is configured as with certain frequency-controlled power switching tube
On or off realize the first primary side Tr1a and the second primary side Tr2a oscillation generate primary side pulse voltage.
Rectifier bridge 153 is electrically connected with transformer group 152 with whole to the pulse for boosting to predetermined voltage through transformer group 152
Stream generates high voltage direct current.In some embodiments, rectifier bridge 153 includes four diodes.Wherein, the first pair side Tr1b is electrical
The third node 103 being connected between first diode D1 and third diode D3, the second pair side Tr2b are electrically connected to second
Fourth node 104 between diode D2 and the 4th diode D4.
One end of inductance L is electrically connected to the cathode of the second diode D2, and the other end is electrically connected to one end of capacitor C,
The other end of capacitor C and the anode for being electrically connected to the 4th diode D4.
Operation mode figure of the power switch under the control of controller 170 is illustrated below with reference to Fig. 4 to Fig. 8.
Refering to what is shown in Fig. 4, controller 170, which first exports, makes the first power switch tube Q1 and third power switch tube Q3 conducting
First control signal, at this point, the second power switch tube Q2 and the 4th power switch tube Q4 shutdown.What incoming end 151 accessed comes from
The electric current of battery pack successively returns to battery pack negative terminal through first node 101, the first primary side Tr1a, third power switch tube Q3
To form the first closed circuit.The electric current from battery pack that incoming end 151 accesses is successively through second node 102, the second primary side
Tr2a and the first power switch tube Q1 returns to cathode to form the second closed circuit.The first secondary Tr2b when Tr1b and second is secondary feels
The electric current for answering the first primary side Tr1a and the second primary side Tr2a, through third node 103 flow into electric current successively through the first pair side Tr1b,
Second pair side Tr2b, the second diode D2, inductance L, capacitor C and third diode D3 return to third node 103 to form closure
Circuit.Refering to what is shown in Fig. 8, in this case, the average current for flowing through inductance L gradually rises.
Refering to what is shown in Fig. 5, controller 170 exports again makes the first power switch tube Q1 and third power switch tube Q3 shutdown
Second control signal.At this point, four power switch tubes are in off-state, capacitor C electric discharge, so that the electricity on inductance L
Stream gradually decreases (with reference to shown in Fig. 8), and inductance L electric current is thus avoided to increase always, to have the function that protect inductance L.
Refering to what is shown in Fig. 6, controller 170 exports the third that the 4th power switch and the second power switch tube Q2 is connected again
Control signal.At this point, third switching tube and first switch tube are turned off.Incoming end 151 access the electric current from battery pack according to
It is secondary to return to battery pack negative terminal through first node 101, the first primary side Tr1a and the second power switch tube Q2 and closed with forming third
Close circuit.The electric current from battery pack that incoming end 151 accesses is successively through second node 102, the second primary side Tr2a and the 4th function
Rate switching tube Q4 returns to battery pack negative terminal to form the 4th closed circuit.The first secondary Tr2b when Tr1b and second is secondary incudes
The electric current of first primary side Tr1a and the second primary side Tr2a, the electric current flowed into through third node 103 is successively through first diode D1, electricity
Sense L, capacitor C, the 4th diode D4, the second secondary Tr1b when Tr2b and first is secondary return to third node 103 and are closed back with being formed
Road.Refering to what is shown in Fig. 8, in this case, the average current for flowing through inductance L gradually rises.
Refering to what is shown in Fig. 7, controller 170 exports again makes the 4th power switch tube Q4 and the second power switch tube Q2 conducting
4th control signal.At this point, four power switch tubes are in off-state, capacitor C electric discharge, so that the electricity on inductance L
Stream gradually decreases (with reference to shown in Fig. 8), and inductance L electric current is thus avoided to increase always, to have the function that protect inductance L.
With reference to the condition curve of each power switch tube shown in Fig. 8 at any time.Controller 170 is configured as with certain
Frequency controls the on or off of each power switch tube according to sequence shown in Fig. 8 respectively.And then pass through the first primary side Tr1a
The total voltage that battery pack accesses is converted into primary side pulse voltage with the second primary side Tr2a oscillation, primary side pulse voltage is through the first pair
When Tr1b and second is secondary, Tr2b boosts to predetermined voltage.Predetermined voltage is whole via rectifier bridge 153, inductance L and capacitor C pulse again
Circulation changes high-voltage dc voltage into.It should be noted that high-voltage dc voltage here is greater than the total voltage Vb of battery pack.
With reference to the circuit diagram of another booster circuit shown in Fig. 9.Its it is different from booster circuit 150 shown in Fig. 3 it
It is in first primary side Tr3a and the second primary side Tr4a in transformer group 252 to be connected in parallel, first is secondary when Tr3b and second is secondary
Tr4b is connected in parallel.The booster circuit can also meet the needs of large power supply device 100.
With reference to the circuit diagram of another booster circuit shown in Fig. 10.The difference of itself and Fig. 3 and booster circuit shown in Fig. 9
Place is in transformer group 352 that first primary side Tr5a and the second primary side Tr6a is connected in series, and the first pair side Tr5b and second is secondary
Side Tr6b is connected in series.The booster circuit can also meet the needs of large power supply device 100.
The circuit diagram of another booster circuit with reference to shown in Figure 11.Its with booster circuit above-mentioned the difference is that
First primary side Tr7a and the second primary side Tr8a is connected in series in transformer group 452, and the first secondary Tr8b when Tr7b and second is secondary is simultaneously
Connection connection.Power switch tube is adaptively adjusted according to the connection relationship of primary and secondary side.The booster circuit can also meet greatly
The demand of power power-supply device 100, specific circuit theory and booster circuit 150 shown in Fig. 3 are essentially identical, no longer do herein
It repeats.
The circuit diagram of another kind booster circuit 150 with reference to shown in Figure 12.Its with booster circuit 150 shown in Fig. 3 not
It is to only include a first primary side Tr9a and a second primary side Tr0a in transformer group 552 with place.The booster circuit
Can meet the needs of large power supply device 100, specific circuit theory and booster circuit 150 shown in Fig. 3 are essentially identical,
This is no longer repeated.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of power supply device, comprising:
Shell；
Multiple battery pack ports are arranged on the housing to access multiple battery packs；
Booster circuit is electrically connected with the battery pack port increasing the voltage of the battery pack to export high voltage direct current
Pressure；
Inverter circuit is electrically connected the high-voltage dc voltage inversion to export the booster circuit with the booster circuit to hand over
Galvanic electricity；
Wherein, the booster circuit includes:
First transformer, including the first primary side and the first secondary side；
Second transformer, including the second primary side and the second secondary side；
The connection of first primary side and second primary side is one in being connected in series or being connected in parallel, the described first secondary side
Connection with the described second secondary side is another in being connected in series or being connected in parallel.
2. power supply device according to claim 1, which is characterized in that
First primary side is connected in parallel with second primary side, and first pair is connected in series while secondary with described second.
3. power supply device according to claim 1, which is characterized in that
The booster circuit further include:
Power switch tube is electrically connected so that first primary side or the second original is connected with first primary side or second primary side
One in side.
4. power supply device according to claim 1, which is characterized in that
The booster circuit further include:
Rectifier bridge, be respectively and electrically connected to described first it is secondary while and it is described second it is secondary while so that booster circuit output first is straight
Galvanic electricity pressure.
5. power supply device according to claim 3, which is characterized in that
Further include:
Controller is electrically connected to the power switch tube, is configured as controlling the power switch tube with certain frequency
On or off is so that first primary side and second primary side oscillation generate primary side pulse voltage.
6. power supply device according to claim 1, which is characterized in that
The value range of the rated power of the power supply device is more than or equal to 350W.
7. a kind of booster circuit for power supply device, comprising:
Incoming end is configured to access the DC voltage from battery pack；
Transformer group, be electrically connected with the incoming end so that the DC voltage accessed boost to through the transformer group it is pre-
Constant voltage；
Rectifier bridge is electrically connected with the transformer group so that the predetermined voltage is converted to high voltage direct current after impulse commutation
Electricity；
Wherein, the transformer group includes:
First transformer, including the first primary side and the first secondary side；
Second transformer, including the second primary side and the second secondary side；
The connection of first primary side and second primary side is one of to be connected in series or be connected in parallel, the described first secondary side
Connection with the described second secondary side is the another kind in being connected in series or being connected in parallel.
8. booster circuit according to claim 7, which is characterized in that
First primary side is connected in parallel with second primary side, and first pair is connected in series while secondary with described second.
9. booster circuit according to claim 7, which is characterized in that
Further include:
Power switch tube is electrically connected so that first primary side or the second original is connected with first primary side or second primary side
One in side.
10. booster circuit according to claim 7, which is characterized in that
Further include:
Power switch tube is electrically connected with first primary side or second primary side；
Controller is electrically connected to the power switch tube, is configured as controlling the power switch tube with certain frequency
On or off is so that first primary side and second primary side oscillation generate primary side pulse voltage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711294613 | 2017-12-08 | ||
| CN2017112946130 | 2017-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109951094A true CN109951094A (en) | 2019-06-28 |
Family
ID=67006407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811453795.6A Pending CN109951094A (en) | 2017-12-08 | 2018-11-30 | Power supply device |
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|---|---|
| CN (1) | CN109951094A (en) |
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Application publication date: 20190628 |