CN102195317A - Battery pack - Google Patents
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- CN102195317A CN102195317A CN2011100529238A CN201110052923A CN102195317A CN 102195317 A CN102195317 A CN 102195317A CN 2011100529238 A CN2011100529238 A CN 2011100529238A CN 201110052923 A CN201110052923 A CN 201110052923A CN 102195317 A CN102195317 A CN 102195317A
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- power brick
- transducer
- secondary cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a battery pack, which increases an integral output through a plurality of DC/DC (direct current/direct current) converters and effectively inhibits noise generation simultaneously. The battery pack comprises more than one secondary batteries (1) and a plurality of DC/DC converters (2) for converting the voltage of the secondary batteries (1). The motion frequencies of a plurality of DC/DC converters (2) are set differently by the battery pack. The output of the secondary batteries by a plurality of DC/DC converters (2) is increased so as to be subjected to voltage conversion. Therefore, a part having low output, small size and low heat emission can be used in each DC/DC converter so as to increase the output. Simultaneously, motion frequencies of a plurality of DC/DC converters (2) are set differently so as to inhibit the noise generation.
Description
Technical field
The power brick that the present invention relates to a kind of built-in chargeable secondary cell and constitute, particularly relating to a kind of output voltage that replaces in electronic equipments such as musical instruments is the power brick of the best of using of the 006P battery of 9V.
Background technology
In the past, be the power supply of 9V as output voltage, used the dihedral battery of the 9V that is called as 006P.For example, as the power supply of electronic musical instruments such as the ancillary equipment of musical instruments such as audio device (effector), multichannel recording device, music amplifier or electronics sound synthesizer, keyboard instrument, electronic percussion instrument and use this battery.When the power supply that uses in such musical instruments for example carries out outdoor concert etc., with the residual capacity of battery irrespectively, from the angle of reliability, be replaced by new battery when using at every turn.Therefore, cause discarded greatly waste.
Also can use the AC adapter of peripheral hardware, power to musical instruments, thereby replace such battery, still, when carrying out outdoor concert, not necessarily can under desirable state, use source power supply from source power supply.In addition, at the scene under the situation such as performance, if use the AC adapter, then can produce because of the unlatching of ligthing paraphernalia or other electronic equipments or close the noise that causes, this noise is exaggerated amplifications such as device becomes bigger noise afterwards, brings unplessantness displeasure to spectators sometimes.Therefore, although produce very big discarded waste, present stage also is to use the dihedral battery of the 9V that is called as 006P.
From above viewpoint, replace to the dihedral battery that the secondary cell that can recycle replaces using the 9V that just throws away, can realize the resources effective utilization.Particularly, used the aspects such as stability of power brick capacity, output voltage of lithium rechargeable battery better than the dihedral battery of in the past 9V, very favourable aspect reliability.
[patent documentation 1] TOHKEMY 2008-34296 communique
Because the voltage of the battery units such as lithium rechargeable battery that utilize in such power brick less than 9V, therefore need use the voltage transformation of booster circuit etc.But, be used for the DC/DC transducer of voltage transformation if want to increase output current, then need to make whole the maximization, radiating efficiency also can worsen.Therefore, the present inventor has tried to make the power brick that possesses the DC/DC transducer from viewpoints such as stability and heat generations.This power brick has been used little output, small-sized, the low parts that generate heat in each DC/DC transducer, and can increase output.But this power brick has produced the drawback of bringing the audible sound noise in use.Particularly, if use this power brick in musical instruments, then this audible sound noise is exaggerated amplifications such as device, becomes bigger noise sometimes, needs the generating noise that suppresses such.
Summary of the invention
The present invention develops in order to eliminate above shortcoming, and main purpose of the present invention is to provide a kind of and uses a plurality of DC/DC transducers to increase the power brick that can effectively suppress generating noise when integral body is exported.
Power brick of the present invention has following formation in order to solve above-mentioned problem.
Power brick comprises a plurality of DC/DC transducers 2 of the voltage of more than one secondary cell and conversion secondary cell.And the operating frequency that power brick is set at a plurality of DC/DC transducers 2 is inequality.
Because above power brick is carried out voltage transformation by a plurality of DC/DC transducers to the output of secondary cell, when therefore in each DC/DC transducer, using little output, parts small-sized, low heating to increase output, the operating frequency of a plurality of DC/DC transducers is inequality, thereby can realize suppressing the feature of generating noise.Thus, in each DC/DC transducer, use the power brick integral body of the parts that output is little, small-sized, heating is low to be miniaturized, be easy to carry, and can reduce caloric value and improve fail safe, and can reduce and manufacture the feature of original realization to produce in batches at a low price.
Power brick of the present invention can be set at the operating frequency of a plurality of DC/DC transducers 2 and differ more than the 10kHz.
Because this power brick is made as the difference of the operating frequency of a plurality of DC/DC transducers more than the 10kHz, therefore can effectively suppress the audible sound generating noise.
In power brick of the present invention, a DC/DC transducer 2A and the 2nd DC/DC transducer 2B that a plurality of DC/DC transducers 2 constitute by linking to each other with secondary cell 1 constitute, and the operating frequency of a DC/DC transducer 2A and the 2nd DC/DC transducer 2B all is made as more than the 100kHz, and the difference that can make each operating frequency is more than 10kHz.
The operating frequency of two DC/DC transducers that this power brick will be made of a DC/DC transducer and the 2nd DC/DC transducer is made as more than the 100kHz, the difference that makes both is more than 10kHz, thereby realize stable output, can effectively suppress the audible sound generating noise simultaneously.
Power brick of the present invention can be connected diode respectively at the outlet side of a DC/DC transducer 2A and the 2nd DC/DC transducer 2B, and the outlet side that connects each diode is as output line, and connects outside lead-out terminal 3 on this output line.
Because this power brick is connected to the output of a DC/DC transducer and the output of the 2nd DC/DC transducer on the outside lead-out terminal as an output, therefore can increase whole maximum output current, can prevent effectively simultaneously that the electric current that surpasses permissible value from flowing through each DC/DC transducer, thereby can improve fail safe.
Power brick of the present invention a plurality of outside lead-out terminals 3 that can on output line, be connected in parallel.
This power brick can connect a plurality of electronic equipments and use expediently by possessing a plurality of outside lead-out terminals on these outside lead-out terminals.Particularly, by the outside lead-out terminal that on an output line, is connected in parallel, thereby can stably provide electric power to each outside lead-out terminal.
Power brick of the present invention can connect noise filter on output line.
This power brick is cut off the noise component(s) the electric power of being included in from outside lead-out terminal output by noise filter, thereby can effectively prevent generating noise.
Power brick of the present invention can be made as 9V with output voltage.
This power brick can be used with power supply expediently as the various musical instrumentses that adopt the 9V power supply.
Description of drawings
Fig. 1 is the block diagram of the power brick of one embodiment of the invention.
Fig. 2 is the schematic block diagram of an example of the user mode of expression power brick shown in Figure 1.
Fig. 3 is another routine schematic block diagram of the user mode of expression power brick shown in Figure 1.
Fig. 4 is the schematic block diagram of another example of the user mode of expression power brick shown in Figure 1.
Fig. 5 is the block diagram of the power brick of other embodiment of the present invention.
Fig. 6 is the schematic block diagram of an example of the user mode of expression power brick shown in Figure 5.
Fig. 7 is another routine schematic block diagram of the user mode of expression power brick shown in Figure 5.
Among the figure: the 1-secondary cell; The 2-DC/DC transducer; 2A-the one DC/DC transducer; 2B-the 2nd DC/DC transducer; The outside lead-out terminal of 3-; The 3A-central shaft; The 3B-elastic contact; The 4-charging circuit; 5-external input terminals; The 5A-central shaft; The 5B-elastic contact; The 6-control circuit; The 7-incoming line; The 8-output line; The 9-diode; The 10-noise filter; The 11-input switch; 12-exports switch; The 13-power connector; 14-residual capacity testing circuit; The 15-charge connector; The 16-external switch; The 16A-push-button switch; The 17-display part; 17A-LED; The 18-output line; The 20-electronic equipment; The 21-lead-in wire; The lead-in wire that 21X-is branched; The 22-AC adapter.
Embodiment
Below, based on the description of drawings embodiments of the present invention.Wherein, execution mode illustration shown below is used for specializing the power brick of technological thought of the present invention, and the present invention is following power brick with power brick is specific.In addition, be not to be the parts in the execution mode with the parts shown in the claim are specific.Particularly, for the size of the structure member of putting down in writing in the execution mode, material, shape, for configuration etc., if not special record is not defined in this with scope of the present invention, those only are illustrative examples relatively for it.In addition, a bit exaggeration in order to offer some clarification on sometimes such as the size of each parts shown in the drawings or position relation.And in the following description, identical title, symbolic representation is identical or the parts of identical material, suitably detailed.In addition, constituting each key element of the present invention can be to be constituted a plurality of key elements and used parts to be also used as the mode of a plurality of key elements by identical parts, on the contrary, also can share a functions of components by a plurality of parts and realize.In addition, the content that illustrates in a part of embodiment, execution mode can be used among other the embodiment, execution mode.
Power brick of the present invention links to each other with electronic equipment as power supply, and provides electric power to these electronic equipments.As this electronic equipment, can use the musical instrumentses such as ancillary equipment of electronic musical instrument, musical instrument.Power brick of the present invention perhaps is used as the power supply of musical instrument ancillary equipment such as audio device, multichannel recording device, graphic equalizer (graphic equalizer), sequencer, music amplifier for example as the power supply of electronics sound synthesizer or electronic musical instruments such as keyboard instrument, electronic percussion instrument.But, power brick of the present invention not with its purposes specific be musical instrumentses such as electronic musical instrument or musical instrument ancillary equipment.Power brick of the present invention also can be used in the purposes beyond the musical instruments, for example can use in radio telephone or broadcast receiver etc.
Power brick shown in the block diagram of Fig. 1 comprises that chargeable battery is a plurality of DC/DC transducers 2 of the output of secondary cell 1, this secondary cell of conversion.And illustrated power brick comprises: the charging circuit 4 that utilizes outside input electric power that secondary cell 1 is charged; External input terminals 5 of outside input electric power is provided to charging circuit 4; Export the outside lead-out terminal 3 of the output of DC/DC transducer 2 (in the present embodiment, being step-up DC/DC transducer) to the outside; The control circuit 6 of the operate condition of control charging circuit 4 and DC/DC transducer 2.As shown in Figure 2, this power brick externally connects under the state of electronic equipment 20 via lead-in wire 21 on the lead-out terminal 3, provides electric power from built-in secondary cell 1 to electronic equipment 20.In addition, as shown in Figure 3, power brick externally connects under the state of AC adapter 22 on the input terminal 5, utilizes from the outside input electric power of outside input built-in secondary cell 1 is charged.
Secondary cell 1 is a lithium ion battery.But secondary cell can replace lithium ion battery with chargeable other all batteries such as Ni-MH battery or Ni-Cr batteries.The built-in a plurality of secondary cells 1 of the power brick of Fig. 1, and these secondary cells 1 that have been connected in parallel.Like this, the be connected in parallel structure of a plurality of secondary cells 1 can increase output current.Illustrated power brick three secondary cells 1 that have been connected in parallel, but power brick also can built-in one or two secondary cell, perhaps built-in secondary cell more than four.And the power brick of built-in a plurality of secondary cells these batteries that also can be connected in series perhaps connect into parallel connection and series connection.
As shown in Figure 3, charging circuit 4 externally connects AC adapter 22 on the input terminal 5, under the state that outside input electric power is provided from external input terminals 5 secondary cell 1 is charged.If control circuit 6 detects from AC adapter 22 electric power is provided, then control circuit 6 control charging circuits 4 make it begin secondary cell 1 is charged.Whether provide electric power for example can judge by the current potential of external input terminals 5 from AC adapter 22.And if secondary cell 1 full charging, then charging circuit 4 end are to the charging of secondary cell 1.
DC/DC transducer 2 is exported voltage, electric current that the power conversions of being imported becomes to offer the best of the electronic equipment 20 that links to each other with outside lead-out terminal 3 afterwards.DC/DC transducer 2 is connected to secondary cell 1 in advance with the incoming line 7 of input side, exports after the voltage that will become to stipulate from the power conversions of secondary cell 1 output, the electric current.In addition, DC/DC transducer 2 externally is connected with AC adapter 22 on the input terminal 5 and provides to charging circuit 4 under the state of outside input electric power, via incoming line 7, exports after will becoming the voltage, electric current of regulation from the power conversions that charging circuit 4 provides.
DC/DC transducer 2 use switch elements or coil, smmothing capacitor (all not shown respectively) will become best voltage and current from the power conversions of incoming line 7 inputs.This DC/DC transducer 2 is adjusted the connection of diverter switch element and the duty ratio of shutoff, thereby has the constant voltage characteristic that makes maximum output voltage and electric current stable to a certain extent.That is, DC/DC transducer 2 has the characteristic that the output stabilization of making is a constant voltage.DC/DC transducer 2 comprises the voltage feedback circuit (not shown) that feeds back output voltage in order to make output stabilization.The duty ratio of voltage feedback circuit control switch element under the output voltage of DC/DC transducer, thus make maximum output voltage stable to a certain extent.Wherein, the DC/DC transducer can use and have constant voltage/parts of constant current characteristic.2 pairs of illustrated DC/DC transducers boost from the input voltage that secondary cell 1 or charging circuit 4 offer about 3.6V of incoming line 7, make its output voltage become 9V, make maximum output current become 1A.Thus, can be used as and use output voltage to use expediently as the power supply of the electronic equipment 20 of the battery of 9V.But it is that 9V, maximum output current are the power brick of 1A that power brick of the present invention is not limited to output voltage.According to purposes and needs, can carry out various changes to the output voltage and the maximum output current of power brick.
Power brick of the present invention comprises a plurality of DC/DC transducers 2, exports will become the voltage, electric current of regulation from the power conversions of incoming line 7 input by a plurality of DC/DC transducers 2 after.Power brick of the present invention comprises that a plurality of DC/DC transducers 2 are because when wanting to increase output current with a DC/DC transducer, be difficult to make the miniaturization of DC/DC transducer, and radiating efficiency can worsen also.The power brick that comprises a plurality of DC/DC transducers 2 is exported little and small-sized element by using in each DC/DC transducer 2, thereby can increase whole output current when improving radiating efficiency.But in these DC/DC transducers, use identical parts if comprise the power brick of a plurality of DC/DC transducers 2, then amplify audible sound sometimes.Particularly with this battery pack in the purposes of musical instruments, if from power brick output audible sound noise, then this audible sound noise can be become big and undesirable noise by amplification such as music amplifier sometimes.The present inventor is in order to eliminate such drawback, and by repeatedly testing repeatedly and investigating, it is to have caused this audible sound generating noise because the operating frequency of a plurality of DC/DC transducers is approximate that research obtains.Therefore, power brick of the present invention is characterised in that in order to prevent the audible sound generating noise, the operating frequency of setting a plurality of DC/DC transducers 2 for is inequality.
Though not shown, a plurality of DC/DC transducers 2 comprise the oscillating circuit that the switch element that is built in each DC/DC transducer 2 is carried out switch control with specific frequency.As this oscillating circuit, for example can use control IC.The control IC mode that to be oscillating circuit become the frequency of regulation according to the operating frequency of the connection of control switch element and shutoff is adjusted time constant.This DC/DC transducer 2 carries out switch control with the specified action frequency to the connection and the shutoff of switch element according to the oscillator signal from control IC, thereby exports after the output voltage that will become to stipulate from the power conversions of incoming line 7 inputs.
The operating frequency of a plurality of DC/DC transducers 2 is more than the 100kHz, more than the preferred 200kHz, and below 1MHz.And a plurality of DC/DC transducers are in order effectively to prevent the audible sound generating noise, the difference of separately operating frequency are set at more than the 10kHz, more than the preferred 15kHz, more preferably more than the 20kHz.
As a plurality of DC/DC transducers 2, illustrated power brick comprises a DC/DC transducer 2A and the 2nd DC/DC transducer 2B.The one DC/DC transducer 2A links to each other with secondary cell 1 via incoming line 7 with the 2nd DC/DC transducer 2B.The one DC/DC transducer 2A and the 2nd DC/DC transducer 2B operating frequency separately are 320kHz ± 5～50kHz, and the conversion efficiency that need not to reduce voltage just can prevent the audible sound generating noise effectively.This power brick is made as 350kHz with the operating frequency of a DC/DC transducer 2A, and the operating frequency of the 2nd DC/DC transducer 2B is made as 290kHz.
In addition, power brick is connected the diode 9 that stops adverse current respectively at the outlet side of a DC/DC transducer 2A and the 2nd DC/DC transducer 2B, and connect these diodes 9 outlet side and as output line 8.In other words, via diode 9, a DC/DC transducer 2A and the 2nd DC/DC transducer 2B have been connected in parallel mutually.And power brick has connected outside lead-out terminal 3 on the output line 8 from a plurality of DC/DC transducers 2.Power brick among the figure a plurality of outside lead-out terminals 3 that on output line 8, have been connected in parallel.Thus, as shown in Figure 2, the structure of a plurality of outside lead-out terminals 3 that are connected in parallel on output line 8 has the feature that can connect a plurality of electronic equipments 20 and electric power is provided effectively to these electronic equipments 20.Illustrated power brick two the outside lead-out terminals 3 that have been connected in parallel, but power brick also can dispose an outside lead-out terminal, and outside lead-out terminal more than three perhaps is connected in parallel.
Thus, after being connected in parallel, a plurality of DC/DC transducers 2 are connected the feature that a structure on the output line 8 has the maximum current that can reduce to flow through each DC/DC transducer 2.For example, as shown in Figure 1, the maximum current that is connected in parallel is that the DC/DC transducer 2A of 1A and the structure of the 2nd DC/DC transducer 2B can be made as 2A with the maximum current on the output line 8.Therefore, when can export output current sum from a plurality of outside lead-out terminals 3 always to and become 2A, can prevent effectively that the electric current that surpasses permissible value from flowing through a DC/DC transducer 2A and the 2nd DC/DC transducer 2B, thereby can improve fail safe.
As shown in Figure 4, power brick is also sometimes for example via the lead-in wire 21X that is branched to many, and a plurality of electronic equipments 30 are connected in parallel on an outside lead-out terminal 3.At this moment, the maximum output current that may surpass each DC/DC transducer 2 from the summation of the electric current of an outside lead-out terminal 3 outputs be 1A.But, this power brick a plurality of DC/DC transducers 2 that are connected in parallel, thereby outside lead-out terminal 3 is set on an output line 8, even therefore under the situation of summation above the maximum current of each DC/DC transducer 2 of the electric current that the outside lead-out terminal 3 from is exported, the electric current that will flow through each DC/DC transducer 2 is located at below the 1A, thereby can alleviate the burden of DC/DC transducer 2.
But, power brick of the present invention a plurality of DC/DC transducers 2 of not necessarily leaveing no choice but be connected in parallel, thus export from an output line.Power brick shown in Figure 5 is via output line 18 independently mutually, externally connected the output of a plurality of DC/DC transducers 2 respectively on the lead-out terminal 3.As shown in Figure 6, this power brick is characterised in that, by providing from the electric power of each outside lead-out terminal 3 outputs to not connected electronic equipment 20 mutually, thereby can prevent the audible sound generating noise reliably.But, as shown in Figure 7, also provide from the electric power of each outside lead-out terminal 3 outputs sometimes to mutual connected electronic equipment 20.At this moment, the operating frequency of also setting a plurality of DC/DC transducers 2 for is inequality, therefore can prevent the audible sound generating noise.
In addition, Fig. 1 has been connected noise filter 10 with power brick shown in Figure 5 on output line 8,18.This noise filter 10 is under the situation that does not stop direct current, and the frequency more than specific frequency area is given high impedance.This noise filter 10 for example uses the element of the interchange of cutting off the frequency field higher than audible sound, under the situation of the electric current of outside lead-out terminal 3 outputs, can cut off specific noise component(s) in blocking-up effectively.Therefore power brick shown in Figure 1 has disposed a noise filter 10 owing to possess an output line 8 on this output line 8.The power brick of Fig. 5 has disposed noise filter 10 respectively on two output lines 18.
Outside lead-out terminal 3 is arranged to show outside in power brick.Outside lead-out terminal 3 is connected on the output line 8,18, and the electric power that is stabilized by DC/DC transducer 2 is provided.Outside lead-out terminal 3 is connected on the electronic equipment 20 via being connected in outside lead-in wire 21.Outside lead-out terminal 3 among the figure is in the power connector 13 with tube portion cylindraceous (not shown), and 3A is made as negative pole with central shaft, is made as positive pole with being arranged on this central shaft 3A elastic contact 3B on every side.Power connector 13 among the figure is made as negative pole with central shaft 3A, is made as positive pole with being arranged on this central shaft 3A elastic contact 3B on every side, but also can constitutes opposite polarity as the power connector of lead-out terminal.In addition, the adapter (not shown) of the polarity by using the counter-rotating power connector, easily reversed polarity.And, using at central shaft under the situation of positive electronic equipment, also passable connection polar switching cable (not shown) provides electric power when coming simple conversion polarity.
The operate condition of control circuit 6 control charging circuits 4 and DC/DC transducer 2, and control connection at the input switch on the incoming line 7 11, be connected the connection and the shutoff of the output switch 12 on the outlet side of diode 9, thereby the charging of control the secondary cell 1 and power supply of outside supplied with.And control circuit 6 comprises the residual capacity testing circuit 14 of the residual capacity that detects secondary cell 1, when detecting the residual capacity of secondary cell 1 by this residual capacity testing circuit 14, and the charging and the discharge of control secondary cell 1.The electric current that residual capacity testing circuit 14 accumulative totals discharge and recharge secondary cell 1 comes the computing residual capacity, and can detect voltage and detect residual capacity.
In addition, illustrated power brick has connected the external switch 16 of the portion that shows out on control circuit 6, and this external switch 16 is made as following mains switch, promptly switches from connection and the shutoff of outside lead-out terminal 3 to outside supply capability.And, in the display switch of the residual capacity of secondary cell 1 and with the external switch 16 among the figure.This external switch 16 is by push-button switch 16A, switches the display switch of residual capacity and the mains switch of power brick with the length of time of pressing button switch 16A.Push-button switch 16A is that external switch 16 for example can be judged to be and operate display switch when the time that is pressed short, when the time that is pressed long, is judged to be and has operated mains switch.This control circuit 6 is judged to be and has operated display switch in the connection signal of importing from push-button switch 16A than setting-up time also in short-term, when also longer than setting-up time, be judged to be and operated mains switch.But power brick also can be divided the display switch of control to the electric power of outside mains switch of supplying with and the residual capacity that shows secondary cell that be arranged.And power brick also can not be provided with the display switch of the residual capacity that shows secondary cell, shows capacity in the discharge neutralization charging by lighting LED.Can be by showing the residual capacity of secondary cell in the discharge in real time by lighting of LED, thus this power brick used when making the user confirm this demonstration all the time.Therefore, in use, for example in the performance of musical instrument way, used when can confirm situation that the residual capacity of secondary cell reduces at any time, in use, can prevent to exhaust the drawback that to use suddenly because of battery.
If push-button switch 16A is pressed the short time, then control circuit 6 is judged to be and has operated display switch, exports shows signal to the residual capacity testing circuit 14 of secondary cell 1 and shows residual capacity.Residual capacity testing circuit 14 is the residual capacity of lighting color or illuminating state demonstration secondary cell 1 of LED17A with display part 17.If from push-button switch 16A input shows signal, then this residual capacity testing circuit 14 makes LED17A light the regular hour, thereby shows the residual capacity of secondary cell 1.
And if push-button switch 16A is pressed the long time, then control circuit 6 is judged to be and has operated mains switch.If mains switch is operating as on-state from off state, then control circuit switches to connection with input switch 11, provide electric power from incoming line 7 to DC/DC transducer 2, and then, DC/DC transducer 2 is set to on-state, thereby the power conversions that will provide from incoming line 7 is the output voltage of regulation, further will export switch 12 and switch to connection, the electric power from outside lead-out terminal 3 outputs from 2 outputs of DC/DC transducer.And, if mains switch is operating as off state from on-state, then control circuit 6 switches to shutoff with input switch 11, thereby stop to provide electric power to DC/DC transducer 2 from incoming line 7, and DC/DC transducer 2 and output switch 12 are switched to shutoff, stop to provide electric power to outside lead-out terminal 3.
Above power brick can be for a long time under the state of pressing button switch 16A, make DC/DC transducer 2 keep idle state, therefore though externally do not connect the state of electronic equipment 20 on the lead-out terminal 3 or externally connected electronic equipment 20 on the lead-out terminal 3 but do not use under the state of electronic equipment 20, can prevent the useless waste of secondary cell 1.This is because if DC/DC transducer 2 is in running order, even then under the state that does not connect electronic equipment 20, also can consume electric power.And above control circuit 6 is in sleep state under holding state, and consumption electric power is minimized.Control circuit 6 from external switch 16 input signals (drive signal) or externally input terminal 5 connect the AC adapters and when it provides outside input electric power, enter operating state.
As mentioned above, above power brick provides electric power to the electronic equipment 20 that is connected on the outside lead-out terminal 3, and built-in secondary cell 1 is charged.
[state of electric power is provided to electronic equipment from built-in secondary cell]
Externally do not connect under the state of AC adapter 22 on the input terminal 5, if push-button switch 16A is pressed by long, thereby detect mains switch and be operating as connection, then control circuit 6 switches to connection with input switch 11 and output switch 12, and DC/DC transducer 2 is made as operating state.Under this state, will be after the voltage of regulation from the voltage transformation of secondary cell 1 output by DC/DC transducer 2, from outside lead-out terminal 3 outputs, offer the electronic equipment 20 that is connected in outside lead-out terminal 3.At this moment, the residual capacity that control circuit 6 detects secondary cells 1 discharges to secondary cell 1 than the also big situation of setting capacity the time.Discharge from secondary cell 1 afterwards because this power brick detects the residual capacity of secondary cell 1, therefore can prevent secondary cell 1 overdischarge.If the residual capacity of secondary cell 1 is also lower than lowest capacity, then control circuit 6 stops DC/DC transducer 2, and input switch 11 and output switch 12 are switched to shutoff, thereby ends the discharge from secondary cell 1.
[utilize from the outside input electric power that the AC adapter provides electronic equipment carried out the electric power condition of supplying]
Externally connect under the state of AC adapter 22 on the lead-out terminal 5, if push-button switch 16A is pressed by long, thereby detect mains switch and be operating as connection, then control circuit 6 switches to connection with input switch 11 and output switch 12, and DC/DC transducer 2 is made as operating state.Externally connect on the input terminal 5 under the state of AC adapter 22, from running order charging circuit 4 output powers.Therefore, the electric power that offers incoming line 7 from charging circuit 4 is transformed to DC/DC transducer 2 after the voltage of regulation from outside lead-out terminal 3 outputs, provides electric power to the electronic equipment 20 that is connected on the outside lead-out terminal 3.
But control circuit externally connects on the input terminal under the state of AC adapter, also can utilize when from the electric power of charging circuit output secondary cell being charged, and provides electric power to the DC/DC transducer.
[externally connect the AC adapter on the input terminal and come state that secondary cell is charged]
If externally connect AC adapter 22 on the input terminal 5, detect from AC adapter 2 outside input electric power is provided, then the charging of control circuit 6 beginning secondary cells 1.The state that outside input electric power is provided from AC adapter 22, though externally do not connect the state of electronic equipment 20 or connected electronic equipment 20 but do not provide under the state of electric power to this electronic equipment 20, promptly when the mains switch of power brick was in off state, 6 pairs of secondary cells 1 of control circuit charged.Control circuit 6 is input switch 11 and output switch 12 being kept off state and having stopped will being made as operating state from charging circuit 4 under the state of DC/DC transducer 2, so that secondary cell 1 is charged.When control circuit 6 detected the residual capacity of secondary cell 1 by residual capacity testing circuit 14, control charging circuit 4 charged to secondary cell 1.If secondary cell 1 full charging, then control circuit 6 stops the charging that charging circuit 4 finishes secondary cell.
And power brick is charged by display part 17 demonstrations in the charging way of secondary cell 1, and when secondary cell 1 completely charges, can also show that charging finish by display part 17.
(utilizability on the industry)
Power brick of the present invention is preferably used as the power supply of the musical instrument ancillary equipment such as the electronic musical instruments such as electronics sound synthesizer, keyboard instrument, electronic percussion instrument or audio device, multichannel recording device, graphic equalizer, SEQ sequencer, music amplifier.
Claims (7)
1. power brick comprises that a plurality of DC/DC transducers of the voltage of more than one secondary cell and the described secondary cell of conversion, this power brick are characterised in that,
Set the operating frequency of described a plurality of DC/DC transducers inequality.
2. power brick according to claim 1 is characterized in that,
The operating frequency of described a plurality of DC/DC transducers differs more than the 10kHz.
3. power brick according to claim 1 and 2 is characterized in that,
Described a plurality of DC/DC transducer comprises a DC/DC transducer and the 2nd DC/DC transducer that links to each other with described secondary cell and constitute,
All more than 100kHz, the difference of operating frequency separately is more than the 10kHz to the operating frequency of a described DC/DC transducer and described the 2nd DC/DC transducer.
4. power brick according to claim 3 is characterized in that,
Described power brick constitutes: the outlet side at a described DC/DC transducer and described the 2nd DC/DC transducer is connected diode respectively, and the outlet side that connects each diode connects outside lead-out terminal as output line on this output line.
5. power brick according to claim 4 is characterized in that,
Described power brick is connected in parallel a plurality of outside lead-out terminals and constitutes on described output line.
6. according to claim 4 or 5 described power brick, it is characterized in that,
Described power brick connects noise filter and constitutes on described output line.
7. according to each described power brick of claim 1 to 6, it is characterized in that,
The output voltage of power brick is 9V.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-045971 | 2010-03-02 | ||
| JP2010045971A JP2011182592A (en) | 2010-03-02 | 2010-03-02 | Battery pack |
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| CN102195317A true CN102195317A (en) | 2011-09-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5926606B2 (en) * | 2012-04-27 | 2016-05-25 | キヤノン株式会社 | Image forming apparatus and voltage generator |
| WO2015063968A1 (en) * | 2013-10-31 | 2015-05-07 | 三洋電機株式会社 | Battery pack, electronic device system, and electronic device |
| US9592744B2 (en) | 2013-12-06 | 2017-03-14 | SZ DJI Technology Co., Ltd | Battery and unmanned aerial vehicle with the battery |
| CN103701163B (en) * | 2013-12-06 | 2018-05-01 | 深圳市大疆创新科技有限公司 | Battery, the aircraft and battery control method with the battery |
| JPWO2015111160A1 (en) * | 2014-01-22 | 2017-03-23 | 富士通株式会社 | Battery unit, information processing apparatus, and battery unit control method |
| CN107769317B (en) * | 2015-06-29 | 2020-09-15 | 深圳市大疆创新科技有限公司 | Control circuit, battery with control circuit and battery control method |
| CN108288864A (en) * | 2017-12-29 | 2018-07-17 | 武汉新能源汽车工业技术研究院有限公司 | A kind of multi-module power charging unit and method |
| JPWO2020218032A1 (en) * | 2019-04-23 | 2020-10-29 |
Citations (4)
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| JPH0556636A (en) * | 1991-08-22 | 1993-03-05 | Nippon Motoroola Kk | Voltage converter |
| JPH10146044A (en) * | 1996-11-11 | 1998-05-29 | Advantest Corp | Switching power source |
| JP2001298952A (en) * | 2000-04-14 | 2001-10-26 | Cosel Co Ltd | Switching power supply unit |
| CN101064438A (en) * | 2006-04-26 | 2007-10-31 | 台达电子工业股份有限公司 | Uninterruption power supply capable of providing sine wave output AC voltage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06291710A (en) * | 1993-03-31 | 1994-10-18 | Hitachi Ltd | Portable telephone set |
| TWM251393U (en) * | 2004-01-07 | 2004-11-21 | Chung-Heng Ma | Portable power supply device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0556636A (en) * | 1991-08-22 | 1993-03-05 | Nippon Motoroola Kk | Voltage converter |
| JPH10146044A (en) * | 1996-11-11 | 1998-05-29 | Advantest Corp | Switching power source |
| JP2001298952A (en) * | 2000-04-14 | 2001-10-26 | Cosel Co Ltd | Switching power supply unit |
| CN101064438A (en) * | 2006-04-26 | 2007-10-31 | 台达电子工业股份有限公司 | Uninterruption power supply capable of providing sine wave output AC voltage |
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| JP2011182592A (en) | 2011-09-15 |
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Application publication date: 20110921 |