CN1061479C

CN1061479C - Electronic device having internal charge regulator

Info

Publication number: CN1061479C
Application number: CN94190427A
Authority: CN
Inventors: 大卫·M·德莫罗
Original assignee: Motorola Inc
Current assignee: Motorola Mobility LLC
Priority date: 1993-06-30
Filing date: 1994-06-03
Publication date: 2001-01-31
Anticipated expiration: 2014-06-03
Also published as: TW249871B; ZA944735B; ITRM940420A0; AU683475B2; ITRM940420A1; WO1995001692A1; GB9503718D0; CA2140535A1; JPH08500959A; CA2140535C; FR2707131B1; GB2285188A; AU7052994A; FR2707131A1; IT1272306B; RU2144275C1; GB2285188B; BR9405440A; MX9404950A; KR950703247A

Abstract

An electronic device, such as a radiotelephone, is connectable to a variable-level power source. The electronic device includes a rechargeable power source which is repowered responsive to application of operative power generated by the variable-level power source. The electronic device provides a constant charge current regulator for converting operative power of a constant voltage into operative power of a constant current to be applied to the rechargeable power source to recharge the rechargeable power source. The constant charge current regulator is made up of a series connected diode and resistor pair. According to a further aspect of the invention, when the rechargeable power source becomes fully recharged, application of the operative power can be reduced.

Description

Electronic installation with charge inside adjuster of charging current control

The electronic installation that relate generally to of the present invention is powered with rechargable power supplies, more specifically relate to an electronic installation, this electronic installation is connected to external power source, and this power supply is supplied with work energy and given electronic installation, also the charge power supply of electronic installation is recharged simultaneously.

The project organization of many electronic installations is to allow to be powered by the battery pack that one or more battery units are formed.In some example, when electronic installation is not that using powered battery is very necessary to electronic installation in the time of maybe can not being installed near permanent or other fixing power supplys.In other example, when requiring to connect electronic installation to permanent or other fixing power supplys, just utilize battery supply to supply with electronic installation to increase the portability of device without feed cable.Typically, the battery supply that is used for powering to electronic installation is made up of one or more battery unit, and directly is fitted together with electronic installation, or is contained in the electronic installation.

Yet because a battery supply only can be stored limited energy, the power supply that has the electronic installation of battery supply is just limited by the energy storage capacity of battery supply.Battery supply causes the discharge of battery supply storing energy to the power supply of electronic installation.In case the discharge of battery supply storing energy exceeds certain level, just must change battery supply so that electronic installation can work on.Increase the energy storage capacity of battery supply,, just increased the size (and weight) of power supply for increasing the number of the battery unit of forming this power supply.When battery supply and electronic installation were installed together, adopting increased the portability that this method of battery supply energy storage capacity has just reduced electronic installation.Therefore, when the design battery supply,, increasing the energy storage capacity and reducing between the portability and will do certain compromise for the electronic installation that battery supply is housed.

Portable or movable wireless phone is exactly a kind of like this electronic installation of typically powering with battery supply.Battery supply usually and radio telephone directly be fitted together, its size and weight are not tied to wireless telephonic portability excessively.A radio telephone comprises radio transceiver circuitry, and it comprises that transmitter circuitry and receiver circuit are used for transmitting and receiving modulated signal respectively.In the typical work of radio telephone, waiting for that when receiving indication to the signal of wireless telephonic incoming call, receiver circuit is partly powered continuously.After this, wireless telephonic transmitter circuitry part also obtains power supply and makes and can launch modulated signal.

The radio telephone that is operated in many cellular communication systems is to make therefrom to launch modulated signal, and can also receive simultaneously the modulated signal that is transmitted into the there (by the modulated signal of radio telephone emission and be transmitted into wireless telephonic modulated signal all launch with different channels).The radio telephone that is operated in other cellular communication systems is to make in the different time periods to transmit and receive modulated signal, and when carrying out two-way communication with radio telephone, the Receiver And Transmitter circuit part obtains power supply in the different time periods.

When waiting for that wireless telephonic receiver circuit partly obtains supplying time will be called as the time that radio telephone is in " preparation " state below when the signal of incoming call is indicated in the there emission.(certainly, should notice that wireless telephonic user only just often provides work energy to radio telephone when he wishes to start and finishes a call thus; At other times, there is not work energy to offer radio telephone, radio telephone does not obtain powering receiving and is transmitted into the signal there.That is to say that wireless telephonic user can determine radio telephone not work when reception is transmitted into " preparation " state of wireless telephonic incoming call signal, or rather just the user start call during just provide electric energy to radio telephone).

Usually, make wireless telephonic transmitter circuitry partly work desired energy greater than making the receiver circuit desired energy of partly working.Simultaneously because the efficient of actual device is lower than ideal efficiency, a part that is added on wireless telephonic energy is sent out and is converted into heat energy and makes radio telephone produce the hot polymerization collection.Owing to make the bigger energy of wireless telephonic transmitter circuitry part job requirement, when wireless telephonic transmitter circuitry is partly worked, when receiver circuit is partly worked, there is a corresponding bigger heat to produce.

The rechargeable battery power supply has been developed and can have buied from the market.The rechargeable battery power supply that can buy on some market, its structural design are used for powering to radio telephone.The advantage of using the rechargeable battery power supply is that rechargeable battery can be recharged by applying the charge power supply that is produced by power supply.In case recharged, the rechargeable battery power supply can be used once again.The rechargeable battery power supply of some structure can be recharged, and re-uses, and meets or exceeds 500 times.

As mentioned above, a battery supply is made up of one or more battery units usually.Battery unit connects with series connection (or other connections) form, and is installed in usually in the public shell.Shell and battery unit have been formed the battery supply that is called as battery pack often together.For simplicity, this structure also is called " battery " with generic term usually, and the present invention will use the term of this simplification often.

The battery unit of rechargeable battery power supply is made up of various building material.For example, a rechargeable battery cells can be by lithium (Li) material, nickel-cadmium (Ni-Cd) material, or by nickel metal hydride (NiMHO ₂) the material composition.When charging, it presents different characteristics by the battery unit that these different materials constituted.

The battery charger that can obtain from the market can recharge the device rechargeable battery.The battery charger that comprises this battery charger generally includes the power supply of supplying with work energy.When rechargeable battery suitably is connected to charging device when accepting work energy, power supply charges to battery.

The work energy that is applied to the rechargeable battery power supply is changed into chemical energy, and it is stored in the battery unit of charging of battery supply.Work energy puts on battery unit a period of time makes rechargeable battery set can become the fully battery of electricity.Yet, because the efficient of actual device is lower than desirable efficient, being converted into heat energy so be added to the part of battery unit energy, it causes the hot polymerization collection of battery unit.

Have and make electronic installation and battery supply can both accept some battery charger of the structure type of work energy.This battery charger provides work energy not only to be used for the rechargeable battery unit of battery supply is charged, and also further provides work energy that electronic installation can be worked.

For example, have and make radio telephone and rechargeable battery set accept work energy together to charge, and to make the battery charging equipment of the structure type of radiotelephone circuit work be possible to the battery unit of battery pack.As previously mentioned, in actual device, produced heat as the byproduct of radio telephone work.Simultaneously, the byproduct as the battery unit of battery supply being carried out charging process has also produced heat.

As noted, partly work, require more energy for the transmitter circuitry that makes radiotelephone circuit.Be converted into heat energy because be added to the part of radio telephone work energy, and the rechargeable battery unit of battery pack also produces heat energy during recharging, giving the battery unit of battery pack when work energy charges, when also making simultaneously the circuit part work of electronic installation (here just radio telephone), the excessive hot polymerization collection of radio telephone will take place.Particularly when wireless telephonic transmitter circuitry is partly worked.

Therefore need a kind of equipment that work energy can be offered to the electronic installation that comprises rechargable power supplies, this equipment offers work energy electronic installation and can prevent to produce unnecessary hot polymerization collection.

UK Patent Application GB 2242793A discloses a kind of battery charger that is used for portable electric appts, the control signal that this charger can produce according to electronic equipment with trickle charge or fast mold filling formula to battery charge, yet this method does not solve the above problems.

The object of the present invention is to provide a kind of device, to overcome and a difficult problem of the prior art.

The invention provides a kind of electronic installation, second pattern that has first pattern of executable operations and carry out charging operations, this electronic installation is connected to the variable level power supply separably, be used for when being connected, receiving the electric energy that produces by the variable level power supply with the variable level power supply, above-mentioned electronic installation comprises: a connector that can be connected with above-mentioned variable level power supply, described connector comprise that one first Connection Element comprises also that to receive the electric energy that is produced by the variable level power supply one second Connection Element is to provide a power control signal to the variable level power supply; A rechargable power supplies is operably connected to first Connection Element, to receive electric energy from the variable level power supply; A control circuit, it is characterized in that: described control circuit is operably connected to second Connection Element, thereby when described electronic installation is carried out first operator scheme, generation is used to limit first power control signal of the electric energy that is produced by the variable level power supply, forbid charging operations, and when described electronic installation is not carried out first operator scheme, produce a second source control signal, allow to carry out charging operations.

The contrast accompanying drawing is read, and will be better understood the present invention, wherein:

Fig. 1 is the block diagram of the electric device of a preferred embodiment of the present invention, and it is connected to the variable level power supply;

Fig. 2 is one and the similar block diagram of block diagram shown in Figure 1, but it is that the preferred embodiments of the present invention are connected to the variable level power supply;

Fig. 3 is a partial block diagram, and it is the local circuit design drawing of charging regulator, and it has constituted the part of the radio set of the electronic installation of Fig. 1 and Fig. 2;

Fig. 4 is the schematic diagram of the cellular radio of a preferred embodiment of the present invention, and it is similar to the radio set of representing with the block diagram form in Fig. 3;

Fig. 5 is a flow chart, has listed the method step of an algorithm of being carried out by control circuit, and control circuit has been formed the part of the electronic installation of the radio set of Fig. 2 and Fig. 1; And

Fig. 6 is a flow chart, has listed the method step of the preferred embodiment of the present invention.

As mentioned above, a portable electronic equipment is often by a charge power supply power supply. When filling During depleted of energy that the electricity power supply is stored, battery charger just is used for to the charging of charge power supply Battery unit charges.

Some structures of battery charging equipment can accomplish to make portable electronic installation and be installed on This charge power supply puts together, and like this, work energy just offers filling of charge power supply The electricity battery unit, the while also offers the circuit of electronic installation.

Yet, because the electrical energy transfer between battery charger and the electronic installation has not been Complete effectively, so the part of the work energy that is produced by battery charging equipment is converted into Heat energy when thermal energy consumption, just makes the temperature of electronic installation raise. Work as battery charger The work energy that produces is used for the battery unit of charge power supply is charged, and is used for supplying When carrying out work for the circuit of electronic installation, in above two courses of work, will produce Heat energy.

In comprising the special case that applies to the electronic installation of first line phone in the cellular communication system, battery charger can be made can provide the rechargeable battery unit of the charge power supply of work energy to being fitted together with radio telephone to charge, and also provides work energy that wireless telephonic transmitter and receiver circuit part can be worked simultaneously.

As mentioned above, wireless telephonic transmitter circuitry is partly worked compared with the bigger energy of receiver circuit part need of work that makes it.The institute this, when the radio telephone that rechargable power supplies is housed (or other radio sets) is the battery unit charging that is provided with to rechargable power supplies, and radio telephone simultaneously also be work the time, radio telephone be used for launching modulated signal during require more electric energy during only being used for receiving modulated signal compared with radio telephone.(as noted above, radio telephone is operated in " preparation " state sometimes, and here, when waiting for the modulated signal of the call that receives an input of expression, having only wireless telephonic receiver circuit partly is work.Only carry out between radio telephone and far-end in the time of maybe will carrying out two-way communication, wireless telephonic transmitter circuitry part just must be work).Thus, because wireless telephonic transmitter circuitry part duration of work has only the bigger electric energy of receiver circuit part duration of work requirement compared with radio telephone, so also just have bigger heat energy to produce at wireless telephonic transmitter circuitry part duration of work.

Be used for to produce the power that can charge and can make the power level of circuit working to the charging of the battery unit of charge power supply and to the battery charger of the circuit supply of electronic installation.The battery charger that produces the charging signals that a power level is only arranged when work must produce power level and can charge to the battery unit of rechargeable battery power supply the while, and can make the signal of the electronic circuit work of electronic installation.When electronic installation was not worked, this battery charger produced a charging signals, and its power level is the same with the power level of the charging signals that is produced when the circuit working of electronic installation.This power is except being used for to the circuit supply of electronic installation, and it can not be used for any useful purpose.Can only be converted into heat energy.

Include in the wireless telephonic specific example at electronic installation, battery charger can be made and can power to the battery unit charging of the charge power supply that is fitted together with radio telephone and to radio transceiver circuitry.But when this battery charger generation only is the charging signals of single power level, power level must be enough big, make it possible to side by side to the battery unit charging of charge power supply and wireless telephonic receiver circuit part and transmitter circuitry partly can both be worked.

When the receiver circuit part of radio-circuit obtained power supply often and is in " preparation " operating state, the transmitter circuitry part only just obtained power supply during carrying out two-way communication with far-end.Because the radiotelephone transmitter circuit part will just just be worked when implementation maybe will be carried out two-way communication, in many cases, when radio telephone and charge power supply are provided to receive charging device charging signals (this charging signals is provided by the battery charger that only produces single power level) together, because too much electric energy is converted to heat energy, so radio telephone is for overheated just more responsive.

Battery charger is used for producing a charging signals, and its power level changes according to the power requirement that has the electronic installation of charge power supply, and such charging device will be favourable.

In for example wireless telephonic specific examples of radio set, when transmitter circuitry is partly worked, be used for preventing the battery charger of transceiver overheated will be useful especially.

At first turn to the block diagram of Fig. 1, the electronic installation of a preferred embodiment of the present invention is represented to be arranged to be connected with the variable level power supply is separable with reference number 10 here.Variable level power supply 16 is by

circuit

22 and 28 and be connected to electronic installation 10 at

Connection Element

34 and 40 places respectively, and what illustrate here is that the connector that the rectangle with dotted line surrounds is brought in the plug-in connector of expression.Variable level power supply 16 equally also be connected to traditional domestic power supply (by with being connected of plug-in connector 36) or other suitable power supply.

Variable level power supply 16 is to be used for producing on circuit 22 charging signals, it is that a level at least two different power levels is (in another embodiment of the present invention, power supply 16 is to be used for producing a charging signals on circuit 22, and it is any level in many level between maximum charge level and minimum charging level).

The circuit 46 of electronic installation 10 is connected and is used for the charging signals that produced by variable level power supply 16 on the receiving lines 22.When power supply 16 was connected to Connection Element 34 by circuit 22 and be provided to work energy there, circuit 46 was connected to the electronic circuit 52 of electronic installation 10 again and is provided to work energy there.

Circuit 46 is also connected to charging regulator 58, and it regulates the value that is added in the charging signals on the circuit 46, and produces an adjusted charging signals on circuit 64, and circuit 64 is connected to rechargeable battery power supply 70.Power supply 70 is made up of one or more rechargeable cell.Through connecting like this, the charging signals that is produced by power supply 16 on the circuit 22 is added to the rechargeable cell charging 70 pairs of theres of rechargeable battery power supply.

The battery unit of rechargeable battery power supply 70 is transformed to chemical energy with power supply 16 charging signals that produce and that regulate through charging regulator 58, and it is stored in the battery unit of rechargeable battery power supply.

Battery supply 70 is connected to electronic circuit 52 by circuit 76.When power supply 16 was not connected to electronic installation 10 and applies charging signals, the energy that battery supply 70 is stored was to be used for to circuit 52 power supplies electronic installation 10 being worked.As noted, use the energy of the energy of battery supply 70 storages to circuit 52 power supplies and the storage of release battery supply.In case the energy consumption that battery supply 70 is stored is when being lower than certain level, the battery unit of battery supply must charge, and just must apply a charging current and recharge to the battery unit of battery supply to it.

Control circuit 82 also constitutes the part of electronic installation 10, and control circuit 82 is connected to electronic circuit 52 and is connected to charging regulator 58 by circuit 94 by circuit 88.Control circuit 82 also is connected to Connection Element 40 by circuit 100, thereby, make control circuit 82 be connected to circuit 28, it is connected to variable level power supply 16 again.Control circuit 82 preferably also is connected to rechargeable battery power supply 70 by circuit 106.

Electronic installation 10 also comprises input element 112, and it is connected to electronic circuit 52 by circuit 118.Similarly, the display element of for example being made up of light-emitting diode 124 is connected to electronic circuit 52 by circuit 128 here.A user of electronic installation 10 is by 112 suitable excitations come operating means 10 to input element.(for example encourage a pass that comprises input element 112 each several parts/open driving switch).Each several part in response to the electronic circuit 52 of these inputs, here the connecting circuit element is to accept work energy, these electric energy produce on circuit 46 when power supply 16 is connected to electronic installation 10 by Connection Element 34, or accept the electric energy of battery supply 70 in addition.When electronic circuit 52 work, a signal of indicating this work is by circuit 88 supply control circuits 82.

In response to the signal that is added on the circuit 88, control circuit 82 provides a signal with first signal value on circuit 100, and be added to circuit 28 again by Connection Element 40, when the variable level power supply was connected to Connection Element 40 by circuit 28, this signal was added to the variable level power supply again.On the contrary, when electronic circuit is not worked, on circuit 88, provide a signal, and be added to control circuit 82 with secondary signal value (or not having signal).In these cases, control circuit 82 provides a signal with secondary signal level value (or not having signal) on circuit 100.Similarly, it can be added to variable level power supply 16.

When variable level power supply 16 is connected to Connection Element 40, power supply 16 thereby on circuit 28, receive indication electronic circuit 52 signal of whether working.

Working and power supply 16 when being connected to electronic installation 10 when electronic circuit 52, the charging signals that is produced by power supply 16 on circuit 22 must have enough big power level and power to circuit 52.On the contrary, when electronic circuit 52 was not worked, power supply 16 need not to produce one and has the charging signals that power level can make circuit 52 work.

Because the charging signals that is produced by power supply 22 also is used to the battery unit charging to battery supply 70, so the charging signals that is produced by power supply 16 must have the power level that the battery unit to battery supply recharges suitably.Charging regulator 58, it is used for being adjusted in the level of the charging signals that is produced by power supply 16 on the circuit 22, and it produces the battery unit that an adjusted charging signals is applied to battery supply 70 on circuit 64.

Control circuit 82 also is used for producing the level that a control signal is controlled the charging signals of regulating of the battery unit that is added to battery supply on circuit 94.The control signal value that is produced by control circuit 82 on circuit 94 can determine that the voltage level of this measurement is taken from the two ends of battery supply 70 by the voltage level of measuring at least in part, and by circuit 106 supply control circuits 82.(voltage level of taking from power supply 70 two ends can be measured with any traditional method).

In first preferred embodiment of the present invention, when power supply 16 was connected to electronic installation 10 by Connection Element 34 and 40, at electronic installation 52 duration of works, power supply 16 produced the signal of a low-power level on circuit 22.And do not work or not during preparation, power supply 16 produces the signal of a high power levels on circuit 22 when electronic circuit 52.When electronic circuit 52 is not worked or not during preparation, the signal that is produced by power supply 16 on circuit 22 is to have sufficiently high power level to come battery unit charging to battery supply 70.

In another preferred embodiment, power supply 16 works in similar mode, but given signal also depends on the charge volume of being stored in the battery supply 70 on the circuit 22.(charge volume of being stored in the power supply 70 is a ratio voltage level thereon).That is to say, when when the signal value that is produced by control circuit 82 on the circuit 100 depends on the signal value that is added on control circuit 82 on circuit 106 at least in part, then variable level power supply 16 produces a signal on circuit 22, its level is between above-mentioned two power levels, wherein, the concrete power level of signal depends on the charge volume of having stored in the battery unit of battery supply 70.

But in two embodiment, be chosen on the circuit 22 value that is produced the power level of signals by variable level power supply 16, between the charge period of the battery unit of electronic installation duration of work or battery supply 70, this value makes the excessive heat of giving birth to for minimum.

Turn to the block diagram of Fig. 2 below, the radio set that shows the preferred embodiments of the present invention here is a radio telephone, with reference number 210 expressions.Radio telephone 210 is corresponding to the electronic installation 10 of Fig. 1.Variable level power supply 216 is connected to radio telephone 210 separably by

circuit

222 and 228, and

circuit

222 and 228 is connected to

Connection Element

234 and 240, is to be positioned at the plug-in connector that dashed rectangle is represented with plug end here.Variable level power supply 216 is connected to a traditional domestic power supply (being connected of utilization and plug-in connector 236) again or is connected to the power supply of an automobile.Power supply 216 is to be used for producing on circuit 222 charging signals with power level of selecting.

Circuit 246 in the radio telephone 210 is with transceiver circuitry 210 interconnection of Connection Element 234 and radio telephone 210, and the transceiver circuitry of the radio telephone 210 that illustrates here is made up of receiver circuit part 250 and transmitter circuitry part 252.When power supply 216 was connected to the Connection Element 234 of radio telephone 210, the signal that power supply 216 produces is added to Receiver And

Transmitter circuit part

250 and 252 provided work energy to

circuit part

250 and 252, and corresponding circuit part can be worked.

Charging regulator 258 has also constituted radio telephone 210 parts, and links to each other with circuit 246, when power supply 216 is connected to Connection Element 234 by circuit 222, receives the signal that power supply 216 is produced.Charging regulator 258 is used for regulating the signal value that is added on the circuit 246, and produces an adjusted charging signals on circuit 264, and it is added to rechargeable battery power supply 270, and it can be recharged battery unit.

The rechargeable battery power supply is connected to the

circuit part

250 and 252 of Receiver And Transmitter by circuit 276.When variable level power supply 216 was not connected to radio telephone 210, the energy of storing in the battery unit of rechargeable battery power supply 270 was utilized to provide work capacity, and Receiver And

Transmitter circuit part

250 and 252 can be worked.

Control circuit 282 is connected to Receiver And

Transmitter circuit part

250 and 252 by circuit 288, is connected to charging regulator 258 by circuit 294, is connected to Connection Element 240 by circuit 300, is connected to rechargeable battery power supply 270 by circuit 306.

The signal that offers control circuit 282 at circuit 288 is to indicate

circuit part

250 and 252 operating times.(as previously mentioned, when radio telephone 210 work, only during radio telephone is carried out two-way communication, when wireless telephonic transmitter circuitry part is just worked usually, obtaining power supply under " preparation " state of being everlasting during receiver circuit part 250).

When 250 work of receiver circuit part are only arranged, or Receiver And

Transmitter circuit part

250 and 252 is all idle the time, and control circuit 282 produces a signal with first signal level and is added to the variable level power supply by Connection Element 240 and circuit 228 on circuit 300.On the contrary, on circuit 288, when the signal indication transmitter circuitry part 252 that is added on control circuit 282 is work or will work the time, control circuit 282 produces a signal with secondary signal level on circuit 300.Corresponding to this, power supply 216 produces a signal on circuit 222, and its power level depends on the signal level that is produced signal on circuit 300 by control circuit 282.

In a preferred embodiment with radio telephone 210 work, when transmitter circuitry part 252 is not worked or not during preparation, the signal with first signal level that is produced by control circuit 282 on circuit 300 makes power supply 216 produce a signal at circuit 222, and its power level can be to the battery unit charging of battery supply 270.

When 252 work of transmitter circuitry part, control circuit 282 produces a signal with secondary signal level value on circuit 300, it makes power supply 216 produce a signal with second power level on circuit 222, this can make transmitter circuitry part 252 (also have receiver circuit part) work, but not to the battery unit charging of rechargeable battery power supply 270.In this case, the charging of the battery unit of rechargeable battery power supply 270 only occurs over just transmitter circuitry part 252 idle the time.Therefore, avoided corresponding to the superheating phenomenon of the radio telephone 210 that charges simultaneously and transmit.

The control signal that is produced by control circuit 282 on circuit 294 is the work that is used for controlling charging regulator 258.The signal that is produced when power supply 216 is to be used for applying a charge power supply when the battery unit of battery supply 270 charges, the charging control signal that is produced by control circuit 282 on circuit 294 is such level, and it makes the adjusted charging signals that produces on circuit 264 become the value that realizes this charging.The exact value of adjusted charging signals is maintained by a feedback control loop.

On the contrary, when the battery unit of battery supply 270 does not recharge (for example in transmitter circuitry part 252 with duration of work), the charging control signal that is produced by control circuit 282 on circuit 294 is such level, and it uses, and charging regulator 258 does not produce adjusted charging signals on circuit 264.

Therefore, in a preferred embodiment, when the transmitter circuitry part 252 of radio telephone 210 will be worked when launching modulated signal, control circuit 282 produces a signal and stops adjusted charging signals to be added to the battery unit of battery supply 270 on circuit 294, and to make power supply 216 on circuit 222, produce a signal producing a signal on the circuit 300 with first signal level, it only has to the power level of desired reduction of Receiver And

Transmitter circuit part

250 and 252.

On the contrary, when transmitter circuitry part 252 not during preparation, the charging control signal that provides on circuit 294 is such level, it makes an adjusted charging signals be applied to the battery unit of battery supply 270, and make power supply 216 produce a signal on circuit 222 at the signal that provides the secondary signal level on the circuit 300, its power level can make the battery unit charging of battery supply 270.(Receiver And

Transmitter circuit part

250 and 252 internal circuit stop electric energy on the circuit 246 to

corresponding circuit part

250 and 252 power supplies).

The radio telephone 210 that has illustrated also comprises input element 312, and it is connected to Receiver And

Transmitter circuit part

250 and 252 by circuit 318.Similarly, display element 324 also is connected to

circuit part

250 and 252 by circuit 328 here.

Turn to the local theory diagram of Fig. 3 below, show the charging regulator of representing with reference number 358 here.Charging regulator 358 is similar to the charging regulator 258 of Fig. 2 radio telephone 210 and the charging regulator 58 of Fig. 1 electronic installation 10.Be similar to a power supply 216 in the prior figures and a charging signals of 16 signals that produce, be added to charging regulator 358 by circuit 446.On circuit 494, the situation that charging control signal is added to charging regulator 358 be with Fig. 1 and Fig. 2 in the charging control signal that on

circuit

94 and 294, produced separately to be added to the situation of charging

regulator

58 and 258 similar.And the situation that on circuit 464, produces an adjusted charging signals be with Fig. 1 and Fig. 2 in the situation of the adjusted charging signals that on

circuit

64 and 264, produced separately similar.

The signal that produces on the circuit 446 is added to the source electrode of field-effect transistor 504, and the drain electrode of transistor 504 is connected to circuit 464 through resistance 510 and diode 516.

Be used for forming the comparator 524 that constitutes differential amplifier and comprise a positive input, be connected to the left end of resistance 510 by resistance 530.The negative input of comparator 524 is connected to the right-hand member of resistance 510 by resistance 536.

Shunt resistance

542 and 548 is also connected to the positive input and the negative input of comparator 524 separately.

Comparator 524 adds here the difference between the positive input and negative input because be added in comparator 524 positive inputs and the left end voltage level and the right-hand member voltage level of the signal indicating resistance 510 of negative input producing a differential output signal representative on the circuit 554, so the signal that produces on the circuit 554 is exactly the voltage drop (because voltage is to be related to drain power, so the signal that produces on the circuit 554 also is related to the power supply on the circuit 464) at expression cross-over connection resistance 510 two ends.

Circuit 554 is connected to the positive input of comparator 560.Comparator also is configured to constitute a differential amplifier 560.Given charging control signal is added to the negative input of comparator 560 on the circuit 494.The output of the difference of given amplifier 560 is added to the grid of transistor 504 by resistance 572 on circuit 566.Shunt capacitance 578 also is connected between the grid and ground of transistor 504.The loop that forms between the drain electrode of transistor 504 and its grid has been formed a feedback control loop, when the signal value on being added in transistor 504 grids caused transistor 504 to be operated in conventional state (being similar to switch work), feedback control loop made the signal power source that produced on circuit 464 (therefore just power level) can control to drain and the power supply amount of circuit 464.The charging control signal value that is added on the circuit 494 is controlled the signal value that is added in grid.The suitable variation of the signal value that is produced on the circuit 494 makes the signal that produces on the circuit 464 can be the value of wanting arbitrarily.

Turn to the schematic diagram of Fig. 4 below.It shows the radio telephone of briefly representing with reference number 610.The radio telephone 610 corresponding radio telephones 210 that are shown in Fig. 2 block diagram.Be shown in the element of the radio telephone 210 among Fig. 2 with the block diagram form, except rechargeable battery power supply 270 is shown here form by battery pack 614, all be installed in the shell of radio telephone 610 of Fig. 4.

Radio telephone 610 is connected to variable level power supply 616 by

circuit

622 and 628, and

circuit

622 and 628 is connected to power supply 616 Connection Element of radio telephone 610 by plug-in connector 630.(Connection Element of radio telephone 610 is corresponding to the Connection Element among Fig. 2 234 and 240, and it can't be found out in Fig. 4).Plug-in connector 636 also is shown among the figure, it makes power supply 616 be connected to conventional domestic power supply (plug-in connector 636 comprises a plug-in connector that can be connected to conventional domestic power supply, and other plug-in connector that can be connected to other type of power certainly also allows).

Because the position of power supply 616 away from radio telephone 610, is connected to the there by

circuit

622 and 628, although the connection between radio telephone 610 and the power supply 616 is arranged, the user uses radio telephone 610 still very easily.

When radio telephone 610 is to be operated in " preparation " state, radio telephone 610 causes that in the control signal that produces on the circuit 628 power supply 616 produces the battery unit that a quite high direction of signal of power level comprises the battery pack 614 of rechargable power supplies and charges on circuit 622.Yet, when radio telephone 610 is when being operated in the emission modulated signal, radio telephone 610 causes that in control signal of generation on the circuit 628 power supply 616 produces a signal that power level is quite low on circuit 622, battery unit to battery pack 614 does not recharge, and on circuit 622, producing a signal, its power level makes and can partly power to wireless telephonic transmitter and receiver circuit.In this case, because not the recharging of battery unit of the transmitter circuitry of radio telephone 610 part and battery pack 614 can take place simultaneously, so prevented the superheating phenomenon of radio telephone 610.

Turn to the flow chart of Fig. 5 below, show an algorithm of briefly representing with reference number 700 here, it is carried out by the control circuit of Fig. 2 radio telephone 210.When carrying out, algorithm 700 causes that control circuit 282 produces control signal and controls the charge power supply that is added to rechargeable battery power supply 270 battery pack 614 of Fig. 4 radio telephone 610 (or corresponding to) on

circuit

294 and 300, and the power level of control power supply 216 power supply 616 of radio telephone 610 (or the corresponding to) signal that produces.

At first, shown in decision block 706, whether be connected to radio telephone for the variable level power supply and decision making.If power supply is not connected to radio telephone, then carry out "No" branch, penetrate

machine circuit part

250 and 252 power supplies to the receiver of radio telephone 210 with being sent to the energy that battery supply is stored.

Yet, if power supply is connected to radio telephone, the "Yes" branch of enforcement of judgment execute a judgement square frame 718, and whether transmitter circuitry part 252 worked launch modulated signal and decision making.If radio telephone is in " preparation " state or transmitter circuitry part 252 preparation not, then carry out "No" branch, on circuit 300, produce a control signal with first signal level, shown in square frame 724, and on circuit 294, produce charging control signal, shown in square frame 730, so that charging regulator 258 produces the battery unit charging of an adjusted charging signals to battery supply 270 on circuit 264.

Yet, if transmitter circuitry part 252 will be worked, then enter the "Yes" branch of decision block 718, the control signal that produces on circuit 300 has a secondary signal level value, shown in square frame 736, and the charging control signal that produces on circuit 294 has such signal level, and shown in square frame 742, this level makes charging regulator 258 can not produce an adjusted charging signals on circuit 264.At radio telephone 210 duration of works, algorithm 700 repeats.

Fig. 6 is a logical flow chart, and it represents with reference number 800 that briefly it has listed the method step of a preferred embodiment of the present invention.Method 800 allows to wireless telephonic transceiver circuitry power supply, when the variable level power supply is connected to radio telephone, and its work work energy of a level at least two power levels accepting to produce by the variable level power supply.

At first, shown in square frame 806, the variable level power supply is connected to radio telephone separably to provide work energy to radio telephone.

Secondly, shown in square frame 812, when the variable level power supply is connected to electronic installation the work energy with first power level is provided, connect rechargable power supplies and receive a charging signals in response to during this period of time.

Then, shown in square frame 818, work energy that is produced by the variable level power supply or the electric energy that is produced by the rechargable power supplies storing energy offer transceiver circuitry.

At last, shown in square frame 824, produce a power control signal and be applied to the variable level power supply, wherein power control signal is a level at least the first signal level or the secondary signal level, and it is first level at least two power levels that first signal level makes the work energy of variable level power supply; It is second level at least two power levels that the secondary signal level makes the work energy of variable level power supply.

Because the electronic installation of the preferred embodiment of the present invention with and corresponding method make an outside power level that produces signal be one to depend on the level that this electronic installation power needs, so, apply a large amount of electric energy and avoided in the phenomenon of the caused generation undue heat of electronic installation.

Though the present invention's preferred embodiment in conjunction with the accompanying drawings is described, be appreciated that and use other similar embodiment to be fine, can modify and increase described embodiment and realize function of the present invention and do not depart from its spirit and scope.So the present invention should not be limited to any independent embodiment, but should in range of telling about according to additional claims and scope, explain.

Claims

1. electronic installation, second pattern that has first pattern of executable operations and carry out charging operations, this electronic installation is connected to the variable level power supply separably, is used for receiving the electric energy that is produced by the variable level power supply when being connected with the variable level power supply, and above-mentioned electronic installation comprises:

A connector that can be connected with above-mentioned variable level power supply, described connector comprise that one first Connection Element comprises also that to receive the electric energy that is produced by the variable level power supply one second Connection Element is to provide a power control signal to the variable level power supply;

A rechargable power supplies is operably connected to first Connection Element, to receive electric energy from the variable level power supply;

A control circuit is characterized in that:

Described control circuit is operably connected to second Connection Element, thereby when described electronic installation is carried out first operator scheme, generation is used to limit first power control signal of the electric energy that is produced by the variable level power supply, forbid charging operations, and when described electronic installation is not carried out first operator scheme, produce a second source control signal, allow to carry out charging operations.

2. electronic installation according to claim 1, wherein rechargable power supplies comprises at least one battery unit.

3. electronic installation according to claim 1 and 2 further comprises a charging regulator, is used for regulating the electric energy that is received from the variable level power supply by rechargable power supplies according to one the 3rd control signal from the control circuit reception.

4. electronic installation according to claim 1 and 2 is characterized in that described electronic installation is a radio telephone.

5. electronic installation according to claim 3 is characterized in that described electronic installation is a radio telephone.