CN108075562A - High-power portable electrical equipment and its power control and method - Google Patents
High-power portable electrical equipment and its power control and method Download PDFInfo
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- CN108075562A CN108075562A CN201711143887.XA CN201711143887A CN108075562A CN 108075562 A CN108075562 A CN 108075562A CN 201711143887 A CN201711143887 A CN 201711143887A CN 108075562 A CN108075562 A CN 108075562A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 230000005611 electricity Effects 0.000 claims description 25
- 238000003466 welding Methods 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the present application provides a kind of high-power portable electrical equipment and its power control and method, which includes the first DC power supply and the second DC power supply；Controllable switch, output terminal of the input terminal respectively with first DC power supply and second DC power supply couple, and the output terminal of the controllable switch forms the output of the power control；Control unit, its test side is coupled by output terminal of the corresponding signal acquisition module respectively with first DC power supply and second DC power supply, and its control terminal is coupled with the control terminal of the controllable switch, the sampled signal for being obtained according to the test side controls the switching state of the controllable switch.The embodiment of the present application can improve the operation duration of high-power portable electrical equipment so that high-power portable electrical equipment has portability and the ability of continuous operation simultaneously.
Description
Technical field
This application involves technical field, more particularly, to a kind of high-power portable electrical equipment and its power control
And method.
Background technology
High-power portable electrical equipment (such as electric welding machine, cutting machine) in industrial production needs connection AC power to make
With, and generally require fuel electric generator coordinating operation in the place of no Alternating Current Power Supply.But fuel electric generator volume is big, weight
Weight, difficult, can not meet such as working at height, underground piping repair, the application of mining construction, emergency disaster relief operating mode, and
And fuel electric generator can bring the environmental issues such as air pollution, noise pollution at work.
In view of the above-mentioned problems, occur cutting equipment with the weldering of the cordless of lithium battery power supply currently on the market, with it is portable,
Free of contamination advantage, single charge can be fully loaded with work 10~30 minutes, be very suitable for short time Emergency use in the wild.It is but this
Equipment also has distinct disadvantage, because being limited to rechargeable battery pool-size, the single working time is short, and battery charge time
It is relatively long, continuous production operation needs can not be met.
The content of the invention
The embodiment of the present application be designed to provide a kind of high-power portable electrical equipment and its power control and
Method, to improve the operation duration of existing high-power portable electrical equipment.
In order to achieve the above objectives, on the one hand, the embodiment of the present application provides a kind of electricity of high-power portable electrical equipment
Source control device, including：
First DC power supply and the second DC power supply；
Controllable switch, input terminal respectively with first DC power supply and the output terminal coupling of second DC power supply
It closes, the output terminal of the controllable switch forms the output of the power control；
Control unit, test side by corresponding signal acquisition module respectively with first DC power supply and described
The output terminal coupling of two DC power supplies, and its control terminal is coupled with the control terminal of the controllable switch, for according to the detection
The sampled signal that end obtains controls the switching state of the controllable switch.
Preferably, the sampled signal obtained according to the test side controls the switching state of the controllable switch, bag
It includes：
The voltage signal of the test side acquisition is handled according to preset algorithm, and is controllably opened according to handling result control is described
The switching state of pass.
Preferably, the voltage signal that the test side acquisition is handled according to preset algorithm, and according to handling result control
The switching state of the controllable switch is made, including：
The voltage signal obtained according to the test side confirms first DC power supply, and whether incoming transport is electric；
When confirming the first DC power supply incoming transport electricity, determining the output voltage values of first DC power supply is
It is no to be located at predetermined voltage range；
When the output voltage values for confirming first DC power supply are located at the predetermined voltage range, control described controllable
Switch is in the first DC power supply output mode.
Preferably, the preset algorithm further includes：
When the output voltage values for confirming first DC power supply are located at outside the predetermined voltage range, described in control
Controllable switch works in the second DC power supply output mode.
It is preferably, described when the output voltage values for confirming first DC power supply are located at the predetermined voltage range,
The controllable switch is controlled to work in the first DC power supply output mode, including：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and described controllably opens
During access that the output terminal of pass is non-loaded, the controllable switch is controlled to work in the first DC power supply output mode.
Preferably, the preset algorithm further includes：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and described controllably opens
When the output terminal of pass has load access, the current state of the controllable switch is maintained.
Preferably, the predetermined voltage range is a (1 ± b%), wherein, a is the rated voltage of second DC power supply
Value, b is preset constant.
Preferably, further include：
Charging module couples respectively with first DC power supply, second DC power supply and described control unit,
For under the control of described control unit, being charged using first DC power supply to second DC power supply.
Preferably, second DC power supply includes rechargeable battery pack.
Preferably, the rechargeable battery pack is detachable.
Preferably, first DC power supply includes：
AC input terminal；
Rectification filtering module, input terminal are coupled with the AC input terminal, and output terminal is single with the control respectively
First and described controllable switch coupling.
Preferably, first DC power supply further includes：
DC converter, the rectification filtering module by the DC converter respectively with described control unit and described
Controllable switch couples.
Preferably, first DC power supply further includes：
First inverter arc welding circuit, input terminal are coupled with the output terminal of the rectification filtering module, output terminal and institute
The input terminal coupling of controllable switch is stated, and the first inverter arc welding circuit is controlled by described control unit.
Preferably, second DC power supply further includes：
DC converter couples respectively with described control unit and the rechargeable battery pack.
Preferably, second DC power supply further includes：
Second inverter arc welding circuit, couples respectively with described control unit and the rechargeable battery pack.
On the other hand, the embodiment of the present application additionally provides a kind of high-power portable electrical equipment, controls and fills including power supply
The load put and coupled with the output terminal of the power control；The power control includes：
First DC power supply and the second DC power supply；
Controllable switch, input terminal respectively with first DC power supply and the output terminal coupling of second DC power supply
It closes, the output terminal of the controllable switch forms the output of the power control；
Control unit, test side by corresponding signal acquisition module respectively with first DC power supply and described
The output terminal coupling of two DC power supplies, and its control terminal is coupled with the control terminal of the controllable switch, for according to the detection
The sampled signal that end obtains controls the switching state of the controllable switch.
Preferably, the high-power portable electrical equipment is Portable electric welder or portable cutter.
On the other hand, the embodiment of the present application additionally provides a kind of power control method of high-power portable electrical equipment,
Including：
Obtain the sampled signal of the first DC power supply and the second DC power supply；
The switching state of controllable switch is controlled according to the sampled signal；Wherein,
The input terminal of the controllable switch respectively with first DC power supply and the output terminal of second DC power supply
Coupling, the output terminal of the controllable switch form the output of the power control；
The test side of described control unit by corresponding signal acquisition module respectively with first DC power supply and institute
The output terminal coupling of the second DC power supply is stated, the control terminal of described control unit is coupled with the control terminal of the controllable switch.
Preferably, the voltage signal obtained according to the test side controls the switching state of the controllable switch, bag
It includes：
The voltage signal of the test side acquisition is handled according to preset algorithm, and is controllably opened according to handling result control is described
The switching state of pass.
Preferably, the voltage signal that the test side acquisition is handled according to preset algorithm, and according to handling result control
The switching state of the controllable switch is made, including：
The voltage signal obtained according to the test side confirms first DC power supply, and whether incoming transport is electric；
When confirming the first DC power supply incoming transport electricity, determining the output voltage values of first DC power supply is
It is no to be located at predetermined voltage range；
When the output voltage values for confirming first DC power supply are located at the predetermined voltage range, control described controllable
Switch is in the first DC power supply output mode.
Preferably, the preset algorithm further includes：
When the output voltage values for confirming first DC power supply are located at outside the predetermined voltage range, described in control
Controllable switch works in the second DC power supply output mode.
It is preferably, described when the output voltage values for confirming first DC power supply are located at the predetermined voltage range,
The controllable switch is controlled to work in the first DC power supply output mode, including：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and described controllably opens
During access that the output terminal of pass is non-loaded, the controllable switch is controlled to work in the first DC power supply output mode.
Preferably, the preset algorithm further includes：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and described controllably opens
When the output terminal of pass has load access, the current state of the controllable switch is maintained.
Preferably, the predetermined voltage range is a (1 ± b%), wherein, a is the rated voltage of second DC power supply
Value, b is preset constant.
The power control of the embodiment of the present application high-power portable electrical equipment includes the first DC power supply, second directly
Galvanic electricity source, controllable switch and control unit；Wherein, the input terminal of controllable switch respectively with the first DC power supply and the second direct current
The output terminal coupling in source, the output terminal of controllable switch form the output of power control；It is right that the test side of control unit passes through
Output terminal of the signal acquisition module answered respectively with the first DC power supply and the second DC power supply couples, the control terminal of control unit
It is coupled with the control terminal of controllable switch, control unit is used for the switching of the sampled signal control controllable switch obtained according to test side
State, so that control unit can automatically select a work according to circumstances from the first DC power supply and the second DC power supply
For the power supply of high-power portable electrical equipment, when continuing so as to improve the operation of high-power portable electrical equipment
Between so that high-power portable electrical equipment has portability and the ability of continuous operation simultaneously, is whetheing there is the situation of alternating current
Under can work, so as to have greatly expanded the application scenarios of high-power portable electrical equipment.
Description of the drawings
It in order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it can also be obtained according to these attached drawings other attached drawings.In the accompanying drawings：
Fig. 1 is the circuit theory box of the power control of high-power portable electrical equipment in one embodiment of the application
Figure；
Fig. 2 is the circuit theory side of the power control of high-power portable electrical equipment in another embodiment of the application
Block diagram；
Fig. 3 is the circuit theory side of the power control of high-power portable electrical equipment in another embodiment of the application
Block diagram；
Fig. 4 is the circuit theory side of the power control of high-power portable electrical equipment in another embodiment of the application
Block diagram；
Fig. 5 is the circuit theory side of the power control of high-power portable electrical equipment in another embodiment of the application
Block diagram；
Fig. 6 is the circuit theory side of the power control of high-power portable electrical equipment in another embodiment of the application
Block diagram；
Fig. 7 is the flow chart of the power control method of high-power portable electrical equipment in one embodiment of the application；
Fig. 8 is the flow chart of the power control method of high-power portable electrical equipment in one embodiment of the application；
Fig. 9 is the circuit diagram of the power control of high-power portable electrical equipment in one embodiment of the application；
Figure 10 is the circuit theory of the power control of high-power portable electrical equipment in another embodiment of the application
Figure.
Specific embodiment
It is in order to make those skilled in the art better understand the technical solutions in the application, real below in conjunction with the application
The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
Technical staff's all other embodiments obtained without creative efforts should all belong to the application protection
Scope.
The high-power portable electrical equipment of the embodiment of the present application can include power control and with the power supply
The load of the output terminal coupling of control device；The power supply of load may be selected by power control.In some embodiment party
In formula, for the high-power portable electrical equipment such as can be Portable electric welder, portable cutter, these be high-power
Portable electrical equipment generally uses battery powered.
Refering to what is shown in Fig. 1, in the present embodiment, the power control of the high-power portable electrical equipment can be with
Including the first DC power supply, the second DC power supply, controllable switch and control unit.This mode is simple in structure, efficient.
In the present embodiment, the input terminal of controllable switch respectively with first DC power supply and second direct current
The output terminal in source is coupled, and the output terminal of the controllable switch forms the output of the power control；Described control unit
Test side pass through the output with first DC power supply and second DC power supply respectively of corresponding signal acquisition module
End is coupled, and the control terminal of described control unit and the control terminal of the controllable switch are coupled.Described control unit is used for
The sampled signal obtained according to the test side controls the switching state of the controllable switch, so as to fulfill the power supply electricity to load
The selection and control in source.
In the present embodiment, the high-power portable electrical equipment can include the direct current output of power control
It can be as the power supply of high-power portable electrical equipment (such as electric welding machine, cutting machine), so as to form plug-in hybrid
High-power portable electrical equipment so that it has portability and the ability of continuous operation simultaneously, is whetheing there is the feelings of alternating current
It can work under condition, have greatly expanded the application scenarios of high-power portable electrical equipment.
With reference to shown in Fig. 6, in another embodiment, the power control of the high-power portable electrical equipment is also
It can include charging module, be coupled respectively with first DC power supply, second DC power supply and described control unit；
The charging module fills under the control of described control unit using first DC power supply to second DC power supply
Electricity that is, using the direct current of first DC power supply output as input, charges to second DC power supply.At some
In embodiment, the charging can be that constant-current charge, constant-voltage charge or invariable power charge.
When second DC power supply possesses charge condition (the normal non-full electricity of voltage, temperature are normal), the control is single
Member opens the charging module；When second DC power supply abnormal (such as overvoltage, overcurrent, excess temperature), described control unit
The charging module can be closed.In this way, while first DC power supply has exchange to be electrically accessed and power to the load, may be used also
Electric energy supplement is carried out to second DC power supply to realize, it is described so as to improve without additionally increasing the charging time
The utilization rate of high-power portable electrical equipment.
With reference to shown in Fig. 2, in another embodiment, first DC power supply can include AC input terminal and whole
Flow filter module.Wherein, the input terminal of the rectification filtering module is coupled with the AC input terminal, the rectifying and wave-filtering mould
The output terminal of block couples respectively with described control unit and the controllable switch.Pass through the first direct current described in AC input terminal
Source can access alternating current, such as 110V alternating currents, 220V alternating currents, 380V alternating currents etc.；The rectification filtering module can be by institute
Convert alternating current is stated into direct current.In one embodiment, the AC input terminal can be power connection.In an embodiment party
In formula, the rectification filtering module can be current rectifying and wave filtering circuit or integrated rectifying and wave-filtering device etc..
With reference to shown in Fig. 3, in another embodiment, in addition to AC input terminal and rectification filtering module, described
One DC power supply can also include DC converter, export the rectification filtering module in a manner of by boosting or being depressured
DC power conversion is into suitable for loading the direct current that uses.Wherein, the DC converter can be DC-DC transfer circuit or
Integrated DC-DC converter (i.e. Direct Current, abbreviation DC/DC) etc..In some embodiments, it is described straight
Stream-DC transfer circuit such as may be employed full-bridge, half-bridge, recommend, Buck, Boost topological structure realize.
With reference to shown in Fig. 2 and Fig. 3, in another embodiment, second DC power supply can be rechargeable battery pack,
Such as rechargeable lithium battery group etc..In another embodiment, the rechargeable battery pack can be dismountable, in favor of electricity
The replacement and maintenance of pond group.
With reference to shown in Fig. 4, in another embodiment, in addition to the rechargeable battery pack, second DC power supply is also
It can include DC converter, the DC converter couples respectively with described control unit and the rechargeable battery pack.Such as
This, the DC power conversion Cheng Shi that the DC converter can be exported the rechargeable battery pack by way of boosting or being depressured
In the direct current that load uses.Wherein, the DC converter can be DC-DC transfer circuit or integrated direct current-straight
Current converter etc..In some embodiments, the DC-DC transfer circuit for example may be employed full-bridge, half-bridge, recommend,
The topological structures such as Buck, Boost are realized.
With reference to shown in Fig. 5, in one embodiment, first DC power supply can also include the first inverter arc welding circuit
(i.e. inverter arc welding circuit 1 in Fig. 5)；Second DC power supply can also include the second inverter arc welding circuit (i.e. in Fig. 5
Inverter arc welding circuit 2).Wherein, the output terminal electricity of the input terminal of the first inverter arc welding circuit and the rectification filtering module
Property connection, the output terminal of the first inverter arc welding circuit and the input terminal of the controllable switch be electrically connected, and described first
Inverter arc welding circuit is controlled by described control unit.The second inverter arc welding circuit respectively with described control unit and it is described can
Rechargeable battery set is electrically connected.
In some embodiments, described control unit can be by by electronic component and logic element (or logic electricity
Road) etc. compositions hardware circuit realize.
In another embodiment, in the case of more, described control unit can be processor.In some embodiments
In, the processor for example can be micro-control unit (Microcontroller Unit, i.e. MCU) (such as microcontroller etc.),
Digital signal processor (Digital Signal Processing, abbreviation DSP), Digital Signals unit (Digital
Signal Controller, abbreviation DSC), programmable logic device (Programmable Logic Device, abbreviation PLD),
The programmable integrated circuits modules such as ARM (Acorn RISC Machine) processor.
In some embodiments, above-mentioned signal acquisition module can be voltage sample module etc..
In some embodiments, the controllable switch for example can be D.C. contactor, DC relay or other can
The electronic switching device of control, such as Metal-Oxide Semiconductor field-effect transistor (Metal-Oxide-Semiconductor
Field-Effect Transistor, abbreviation MOSFET), bipolar junction transistor (Bipolar Junction
Transistor, abbreviation BJT), silicon-controlled, insulated gate bipolar transistor (Insulated Gate Bipolar
Transistor, abbreviation IGBT) etc.).In other embodiments, the switch form of the controllable switch can be a list
Dpdt double-pole double-throw (DPDT) or double-point double-throw switch or independent two switch etc..
In one embodiment, when described control unit uses processor, the sampling obtained according to test side is believed
The switching state of number control controllable switch, can be that can handle the voltage that the test side obtains according to preset algorithm to believe
Number, and according to the switching state of the handling result control controllable switch.
The power control method of high-power portable electrical equipment is described below.
In one embodiment, the voltage signal that the test side acquisition is handled according to preset algorithm, and according to place
The switching state of controllable switch described in output control is managed, it can be with as shown in fig. 7, first according to the voltage signal obtained from test side
Confirming first DC power supply, whether incoming transport is electric；It is generally, described first straight in the case where no exchange is electrically accessed
Galvanic electricity source is without output, and after thering is exchange to be electrically accessed, first DC power supply will output voltage signal, so as to quilt
The signal sampling module collects.
When confirming the first DC power supply incoming transport electricity, determining the output voltage values of first DC power supply is
It is no to be located at predetermined voltage range, to determine if to be suitable for the load supplying coupled with the output terminal of the controllable switch.
When the output voltage values for confirming first DC power supply are located at the predetermined voltage range, control described controllable
Switch is in the first DC power supply output mode.Wherein, the control controllable switch works in first direct current
Source output mode refers to：It, can described in control when the controllable switch is not presently within the first DC power supply output mode
Switching is controlled to the first DC power supply output mode；When the controllable switch has currently been in first DC power supply
During output mode, the controllable switch is made to maintain the first DC power supply output mode.
When the output voltage values for confirming first DC power supply are located at outside the predetermined voltage range, described in control
Controllable switch works in the second DC power supply output mode.Wherein, it is straight to work in described second for the control controllable switch
Galvanic electricity source output mode refers to：When the controllable switch is not presently within the second DC power supply output mode, institute is controlled
It states controllable switch and switches to the second DC power supply output mode；When the controllable switch has currently been in second direct current
During power supply output mode, the controllable switch is made to maintain the second DC power supply output mode.
As shown in figure 8, in another embodiment, it is described to be located in the output voltage values for confirming first DC power supply
During the predetermined voltage range, the controllable switch is controlled, which to work in the first DC power supply output mode, to be included：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and described controllably opens
During access that the output terminal of pass is non-loaded, the controllable switch is controlled to work in the first DC power supply output mode.It in this way, can
To prevent controllable switch is charged from switching the impact failure brought or shortening controllable switch service life.
As shown in figure 8, in another embodiment, it is located in the output voltage values for confirming first DC power supply described
In predetermined voltage range, and when the output terminal of the controllable switch has the load to access, the current state of the controllable switch is maintained
(i.e. controllable switch is failure to actuate).In this way, it can be used for preventing that power-off damages electrical equipment suddenly.
In another embodiment, the predetermined voltage range can be a (1 ± b%), wherein, a is second direct current
The load voltage value of power supply, b are preset constant (according to that can determine according to actual needs).In one embodiment, it is described default
Voltage range for example can be a (1 ± 30%).That is, in the present embodiment, the output electricity of first DC power supply
Pressure value should try one's best to match with the load voltage value of second DC power supply.In one embodiment, it is such as described first straight
The output voltage values in galvanic electricity source are the direct current of 310V, and predetermined voltage range then confirms institute between direct current 217V~403V
The output voltage values for stating the first DC power supply are located in the predetermined voltage range.
It should be noted that power control method either as shown in Figure 7 or power control method as shown in Figure 8,
Can be that Xun Huan performs.
In addition, in some embodiments, above-mentioned power control method is working in high-power portable electrical equipment
When, switching action is not performed, prevents the unexpected power-off in handoff procedure from being damaged to high-power portable electrical equipment, and can
It prevents from damaging or shortening the working life caused by controllable switch band is electrically disconnected.In some embodiments, high-power portable is used
Whether electric equipment, which is working, to be judged by the electric current for the output terminal for gathering controllable switch；The output terminal of controllable switch has
Electric current is by then illustrating that high-power portable electrical equipment is working, otherwise, high-power portable electrical equipment is in shutdown
Or the off working states such as standby.In one embodiment, the electric current for gathering the output terminal of controllable switch can be by controllable switch
Output terminal series connection sampling resistor realize；In another embodiment, gathering the electric current of the output terminal of controllable switch can also be
It is realized by the working condition trigger switch for detecting high-power portable electrical equipment.
The illustrative embodiments of the application are described below.
As shown in figure 9, by taking inverter type welder equipment as an example, wherein, the exchange input of the first DC power supply is 220V/AC, the
One DC power supply is filtered to obtain the direct current of 310V using capacitance C1, C2, handed over after diode D1, D2, D3, D4 rectification
Under conditions of flowing stabilized input voltage, for ensure the voltage phase difference of the first DC power supply and the second DC power supply be no more than ±
30%, the voltage of the rechargeable battery pack of the second DC power supply should be 310V ± 30%.
In the embodiment shown in fig. 9, the rechargeable battery pack of the second DC power supply by lithium battery group into for single-unit mark
Claim the lithium battery of voltage 3.6V, it is contemplated that storage needs, and electricity cannot be vented completely, if its discharge voltage range 2.7V~
Between 4.2V, then optional lithium battery string number is~95 string of 81 string.In order to obtain preferable effect, the voltage after lithium battery series connection
As close possible to 310V voltages, present embodiment can set lithium battery string number as 86 strings, the mark of the rechargeable lithium battery group of composition
Voltage is referred to as 309.6V, meets above-mentioned power requirement.
In the embodiment shown in fig. 9, voltage acquisition 1 is divided the output electricity of the first DC power supply of acquisition by resistance R1, R2
Pressure, and feeds back to control unit, and for judging the first DC power supply, whether incoming transport is electric and the output of the first DC power supply
Whether voltage is in normal range (NR) (i.e. preset range).Voltage acquisition 2 is divided by resistance R3, R4 can in the second DC power supply of acquisition
The voltage of rechargeable battery set, and feed back to control unit, for detect the voltage of rechargeable battery pack whether in normal range (NR) (i.e.
Preset range) in, to prevent rechargeable battery pack from overcharging, cross and put.Current acquisition 1 is used to gather the output electricity of rechargeable battery pack
Stream, feeds back to control unit by the information of acquisition by sampling resistor R5, prevents overcurrent or short circuit when rechargeable battery pack is discharged.
In the embodiment shown in fig. 9, temperature collecting module can be also equipped with inside the rechargeable battery pack, for controlling
Unit obtains the temperature information of rechargeable battery pack, it is ensured that rechargeable battery pack charges, discharges at a normal temperature.
In the embodiment shown in fig. 9, the output of the rechargeable battery pack also concatenates controllable switch 2, controllable switch 2 by
It controls in control unit, only when the data of voltage acquisition 2, current acquisition 1 and temperature collecting module detection are all in normal range (NR)
Interior, controllable switch 2 is just closed, if abnormal conditions, the control units such as under-voltage, over-pressed, high temperature, overcurrent occur will disconnect controllable switch
2, it is ensured that the safe handling of rechargeable battery pack.
In the embodiment shown in fig. 9, the A ends of the output cathode connection controllable switch K1 of first DC power supply, the
The output negative pole of the B ends of the output cathode connection controllable switch K1 of two DC power supplies, the first DC power supply and the second DC power supply
Short circuit.
In the embodiment shown in fig. 9, the output of the controllable switch be direct current output, connect by switching tube Q1, Q2,
Q3, Q4, transformer T1, diode D5, D6, the inverter arc welding circuit of sampling resistor R6 compositions.The switching tube Q1, Q2, Q3,
Q4, transformer T1 form full bridge inverter, and transformer T1 outputs are made into the direct current output source of welding current through diode D5, D6.Institute
Sampling resistor R6 composition current samples 2 are stated, for the welding current according to detection, the conducting state of switching tube is controlled, is fitted
Close the output external characteristic of welding.
In the embodiment shown in fig. 9, when voltage acquisition 1 detects that the first DC power supply has exchange to be electrically accessed, and electricity
It is pressed in correct scope (310V ± 30%), controller control controllable switch is connected to A ends, independent by the first DC power supply at this time
It powers to inverter arc welding circuit；When the first DC power supply does not have incoming transport electricity or abnormal voltage, controllable switch is connected to B
End, if the parameters such as the voltage of rechargeable battery pack, electric current, temperature are normal, is closed controllable switch 2, so as to by the second direct current
Source individually powers to inverter arc welding circuit.
As shown in Figure 10, by taking inverter type welder equipment as an example, the exchange input of the first DC power supply is set to 220V/AC, through whole
The direct current of 310V is obtained after stream filtering；Rechargeable battery pack in second DC power supply is set to the lithium battery group of 43 strings, then may be used
The nominal voltage of rechargeable battery set is the voltage phase difference 50% after 154.8V, with the first DC power supply rectifying and wave-filtering, is more than
30%.This illustrative embodiment carries out decompression processing to the first DC power supply, by taking Buck circuits as an example, switching tube Q5, two poles
Pipe D7, inductance L1, capacitance C3 composition Buck reduction voltage circuits, using the conducting dutycycle of the method control Q5 of PWM modulation
Control the final output voltage of the first DC power supply.Such as control Q5 then can obtain the first direct current with 50% duty cycle
The final output voltage of power supply is about 155V, this results in the output voltage to match with the second DC power supply, then first
The anode of DC power supply and the second DC power supply connects the side a and b of controllable switch respectively.Other descriptions refer to shown in Fig. 9
Illustrative embodiments, details are not described herein.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Point just to refer each other, and the highlights of each of the examples are difference from other examples.It should also be noted that,
" comprising ", "comprising" in this specification or any other variant thereof is intended to cover non-exclusive inclusion.
The foregoing is merely embodiments herein, are not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle are equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (24)
1. a kind of power control of high-power portable electrical equipment, which is characterized in that including：
First DC power supply and the second DC power supply；
Controllable switch, output terminal of the input terminal respectively with first DC power supply and second DC power supply couple, institute
The output terminal for stating controllable switch forms the output of the power control；
Control unit, test side by corresponding signal acquisition module respectively with first DC power supply and described second straight
The output terminal coupling in galvanic electricity source, and its control terminal is coupled with the control terminal of the controllable switch, for being obtained according to the test side
The sampled signal taken controls the switching state of the controllable switch.
2. the power control of high-power portable electrical equipment as described in claim 1, which is characterized in that the basis
The sampled signal that the test side obtains controls the switching state of the controllable switch, including：
The voltage signal of the test side acquisition is handled according to preset algorithm, and the controllable switch is controlled according to handling result
Switching state.
3. the power control of high-power portable electrical equipment as claimed in claim 2, which is characterized in that the basis
The voltage signal that the preset algorithm processing test side obtains, and according to the switching shape of the handling result control controllable switch
State, including：
The voltage signal obtained according to the test side confirms first DC power supply, and whether incoming transport is electric；
When confirming the first DC power supply incoming transport electricity, determine first DC power supply output voltage values whether position
In predetermined voltage range；
When the output voltage values for confirming first DC power supply are located at the predetermined voltage range, the controllable switch is controlled
Work in the first DC power supply output mode.
4. the power control of high-power portable electrical equipment as claimed in claim 3, which is characterized in that described default
Algorithm further includes：
When the output voltage values for confirming first DC power supply are located at outside the predetermined voltage range, control described controllable
Switch is in the second DC power supply output mode.
5. the power control of high-power portable electrical equipment as claimed in claim 3, which is characterized in that described true
When recognizing the output voltage values of first DC power supply and being located at the predetermined voltage range, the controllable switch is controlled to work in institute
The first DC power supply output mode is stated, including：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and the controllable switch
During access that output terminal is non-loaded, the controllable switch is controlled to work in the first DC power supply output mode.
6. the power control of high-power portable electrical equipment as claimed in claim 3, which is characterized in that described default
Algorithm further includes：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and the controllable switch
When output terminal has load access, the current state of the controllable switch is maintained.
7. the power control of high-power portable electrical equipment as claimed in claim 3, which is characterized in that described default
Voltage range is a (1 ± b%), wherein, a is the load voltage value of second DC power supply, and b is preset constant.
8. the power control of high-power portable electrical equipment as described in claim 1, which is characterized in that further include：
Charging module is coupled with first DC power supply, second DC power supply and described control unit, is used for respectively
Under the control of described control unit, charged using first DC power supply to second DC power supply.
9. the power control of the high-power portable electrical equipment as described in claim asks 1, which is characterized in that described
Two DC power supplies include rechargeable battery pack.
10. the power control of high-power portable electrical equipment as claimed in claim 9, which is characterized in that it is described can
Rechargeable battery set is detachable.
11. the power control of high-power portable electrical equipment as described in claim 1, which is characterized in that described
One DC power supply includes：
AC input terminal；
Rectification filtering module, input terminal are coupled with the AC input terminal, output terminal respectively with described control unit and
The controllable switch coupling.
12. the power control of high-power portable electrical equipment as claimed in claim 11, which is characterized in that described
One DC power supply further includes：
DC converter, the rectification filtering module by the DC converter respectively with described control unit and described controllable
Switch coupling.
13. the power control of high-power portable electrical equipment as claimed in claim 11, which is characterized in that described
One DC power supply further includes：
First inverter arc welding circuit, input terminal are coupled with the output terminal of the rectification filtering module, output terminal with it is described can
The input terminal coupling of control switch, and the first inverter arc welding circuit is controlled by described control unit.
14. the power control of the high-power portable electrical equipment as described in claim 9 or 10, which is characterized in that institute
The second DC power supply is stated to further include：
DC converter couples respectively with described control unit and the rechargeable battery pack.
15. the power control of the high-power portable electrical equipment as described in claim 9 or 10, which is characterized in that institute
The second DC power supply is stated to further include：
Second inverter arc welding circuit, couples respectively with described control unit and the rechargeable battery pack.
16. a kind of high-power portable electrical equipment, which is characterized in that including power control and with the power supply control
The load of the output terminal coupling of device processed；The power control includes：
First DC power supply and the second DC power supply；
Controllable switch, output terminal of the input terminal respectively with first DC power supply and second DC power supply couple, institute
The output terminal for stating controllable switch forms the output of the power control；
Control unit, test side by corresponding signal acquisition module respectively with first DC power supply and described second straight
The output terminal coupling in galvanic electricity source, and its control terminal is coupled with the control terminal of the controllable switch, for being obtained according to the test side
The sampled signal taken controls the switching state of the controllable switch.
17. high-power portable electrical equipment as claimed in claim 16, which is characterized in that the high-power portable electricity consumption
Equipment is Portable electric welder or portable cutter.
18. a kind of power control method of high-power portable electrical equipment, which is characterized in that including：
Obtain the sampled signal of the first DC power supply and the second DC power supply；
The switching state of controllable switch is controlled according to the sampled signal；Wherein,
Output terminal of the input terminal of the controllable switch respectively with first DC power supply and second DC power supply couples,
The output terminal of the controllable switch forms the output of the power control；
The test side of described control unit by corresponding signal acquisition module respectively with first DC power supply and described
The output terminal coupling of two DC power supplies, the control terminal of described control unit are coupled with the control terminal of the controllable switch.
19. the power control method of high-power portable electrical equipment as claimed in claim 18, which is characterized in that described
The voltage signal obtained according to the test side controls the switching state of the controllable switch, including：
The voltage signal of the test side acquisition is handled according to preset algorithm, and the controllable switch is controlled according to handling result
Switching state.
20. the power control method of high-power portable electrical equipment as claimed in claim 19, which is characterized in that described
The voltage signal of the test side acquisition is handled according to preset algorithm, and the switching shape of the controllable switch is controlled according to handling result
State, including：
The voltage signal obtained according to the test side confirms first DC power supply, and whether incoming transport is electric；
When confirming the first DC power supply incoming transport electricity, determine first DC power supply output voltage values whether position
In predetermined voltage range；
When the output voltage values for confirming first DC power supply are located at the predetermined voltage range, the controllable switch is controlled
Work in the first DC power supply output mode.
21. the power control method of high-power portable electrical equipment as claimed in claim 20, which is characterized in that described pre-
Imputation method further includes：
When the output voltage values for confirming first DC power supply are located at outside the predetermined voltage range, control described controllable
Switch is in the second DC power supply output mode.
22. the power control method of high-power portable electrical equipment as claimed in claim 20, which is characterized in that it is described
When confirming that the output voltage values of first DC power supply are located at the predetermined voltage range, the controllable switch is controlled to work in
The first DC power supply output mode, including：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and the controllable switch
During access that output terminal is non-loaded, the controllable switch is controlled to work in the first DC power supply output mode.
23. the power control method of high-power portable electrical equipment as claimed in claim 22, which is characterized in that described pre-
Imputation method further includes：
It is located in the output voltage values for confirming first DC power supply in the predetermined voltage range, and the controllable switch
When output terminal has load access, the current state of the controllable switch is maintained.
24. the power control method of high-power portable electrical equipment as claimed in claim 20, which is characterized in that described pre-
If voltage range is a (1 ± b%), wherein, a is the load voltage value of second DC power supply, and b is preset constant.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143887.XA CN108075562B (en) | 2017-11-17 | 2017-11-17 | High-power portable electric equipment and power supply control device and method thereof |
| PCT/CN2018/112653 WO2019095995A1 (en) | 2017-11-17 | 2018-10-30 | High-power portable electrical equipment and power supply controlling apparatus and method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143887.XA CN108075562B (en) | 2017-11-17 | 2017-11-17 | High-power portable electric equipment and power supply control device and method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN108075562A true CN108075562A (en) | 2018-05-25 |
| CN108075562B CN108075562B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711143887.XA Active CN108075562B (en) | 2017-11-17 | 2017-11-17 | High-power portable electric equipment and power supply control device and method thereof |
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| WO (1) | WO2019095995A1 (en) |
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| CN108847805A (en) * | 2018-06-27 | 2018-11-20 | 佛山市诺行科技有限公司 | A kind of battery switching driving device of bicycle position parking apparatus |
| WO2019095995A1 (en) * | 2017-11-17 | 2019-05-23 | 苏州绿恺动力电子科技有限公司 | High-power portable electrical equipment and power supply controlling apparatus and method therefor |
| CN111355420A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Motor drive control circuit, motor drive method, circuit board and air conditioner |
| CN111355421A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Drive control circuit, drive control method, circuit board and air conditioner |
| CN111355418A (en) * | 2020-04-16 | 2020-06-30 | 美的集团武汉制冷设备有限公司 | Drive control circuit, drive control method, circuit board and air conditioner |
| CN111355425A (en) * | 2020-04-16 | 2020-06-30 | 广东美的制冷设备有限公司 | Drive control circuit, drive method and device, compressor and air conditioning equipment |
| CN112448461A (en) * | 2020-11-13 | 2021-03-05 | 成都天进仪器有限公司 | Waveform generator equipment for time-sharing power supply of large-signal power supply and small-signal power supply |
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Also Published As
| Publication number | Publication date |
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| CN108075562B (en) | 2023-11-10 |
| WO2019095995A1 (en) | 2019-05-23 |
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