CN201616699U - Charger - Google Patents

Charger Download PDF

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Publication number
CN201616699U
CN201616699U CN2010201185553U CN201020118555U CN201616699U CN 201616699 U CN201616699 U CN 201616699U CN 2010201185553 U CN2010201185553 U CN 2010201185553U CN 201020118555 U CN201020118555 U CN 201020118555U CN 201616699 U CN201616699 U CN 201616699U
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CN
China
Prior art keywords
power supply
controller
charger
external power
battery
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Expired - Lifetime
Application number
CN2010201185553U
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Chinese (zh)
Inventor
田角峰
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Positec Power Tools Suzhou Co Ltd
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Positec Power Tools Suzhou Co Ltd
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Priority to CN2010201185553U priority Critical patent/CN201616699U/en
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Publication of CN201616699U publication Critical patent/CN201616699U/en
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Abstract

The utility model provides a charger, comprising a charging circuit charging a battery by utilizing an external power supply, a controller used for controlling the work of the charger, a manually-operated switch that can be operated to be switched on or off to control the power on or off of the charging circuit, and an electronic switch connected with the manually-operated switch; the controller can control the electronic switch to be switched on or off; and when the manually-operated switch is switched on, the external power supply can supply power to the controller; and the controller can control the electronic switch to be switched on. Compared with the prior art, the technical scheme provided by the utility model can charge the battery under the condition that the battery is completely discharged, thus meeting the needs of users and avoiding waste of batteries.

Description

Charger
Technical field
The utility model relates to a kind of charger, relate in particular to a kind of can be when battery discharges fully to the charger of battery charge.
Background technology
Along with development of science and technology, the kind of battery is various day by day, and develops and rechargeable battery, as nickel-cadmium cell, lead-acid battery and lithium battery or the like, has satisfied different users's demand respectively.But be limited the useful life of rechargeable battery because it often needs to use charger to charge, this moment charger the quality quality to having produced tremendous influence in useful life of rechargeable battery.
Existing charger is most for when battery inserts charger, and by the controller power supply of battery to charger, thereby charger carries out various judgment tasks, when civil power is imported, just can utilize civil power to power to controller.Because existing charger adopts electronic switch to control the break-make of itself and civil power more, so battery must could realize allowing electronic switch closes when also having certain electric energy, and makes controller do various complex calculations.When if battery inserts charger, discharge or last electric energy are few fully, then it possibly can't provide enough electric energy to make electronic switch closes, so under the situation, charger can't be to battery charge, the battery that causes script to continue to use has to be dropped, and this has caused waste to resource.
The utility model content
The utility model provides a kind of charger, crosses when low at battery electric quantity, still can be to battery charge.
For achieving the above object, the technical solution of the utility model is: a kind of charger comprises: utilize the charging circuit of external power supply to battery charge; Be used to control the controller of described charger work; Can be operated closure or disconnection, and then control the hand switch of described charging circuit energising or outage; The electronic switch that is in parallel with hand switch; Described controller can be controlled described electronic switch closes or disconnection, and when described hand switch was closed, described external power supply can be to described controller power supply, and described controller can be controlled described electronic switch closes.
Preferably, described charger has the external power supply power supply circuits that are connected with described controller, and when described hand switch or electronic switch closes, described external power supply power supply circuits can utilize the electric energy of described external power supply to power to described controller.
Preferably, described external power supply power supply circuits are provided with a DC/DC change-over circuit.
Preferably, described external power supply is an AC power, and described charger has an AC/DC change-over circuit, converts the alternating current of described external power supply to direct current, and the electric current that flows into described external power supply power supply circuits is described direct current.
Preferably, described hand switch is non-self-locking mechanical switch.
Preferably, described electronic switch is a relay.
Preferably, described relay has coil and triode, and described controller realizes by control triode conducting or blocking-up whether control coil switches on.
Preferably, the flow through energy source of described coil is described external power supply.
Compared with prior art, charger of the present utility model is provided with hand switch and electronic switch, described hand switch and described electronic switch are in parallel, when described hand switch is closed, described external power supply can be to described controller power supply, and described controller can be controlled described electronic switch closes.Can realize utilize external power supply to battery charge, thereby the user's who satisfies needs being avoided battery is produced unnecessary waste by this scheme when battery when discharge or electric weight are extremely low fully.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the working state schematic representation of charger;
Fig. 2 is the block diagram of the charging circuit of charger among Fig. 1;
Fig. 3 is the circuit diagram of the charging circuit of charger among Fig. 1;
Fig. 4 is the workflow diagram of charger among Fig. 1.
Wherein,
100. charger 62. charging voltage detection modules 78. electric current incoming lines
10. external power supply 63. clock circuits 79. tie points
20. battery 64. indicating modules 80. mains supply lines
30. switch module 65. charging current detection module R1, R2. resistance
31. hand switch 70. controller supply module R3, R4. resistance
32. electronic switch 71. first power supply circuits R5, R6. resistance
40. external power supply detection module 72. second power supply circuits R7, R8. resistance
41. illuminating part 73. the 3rd power supply circuits R9, R10. resistance
42. 74. controlled R11 of acceptance division, R12. resistance
50. modular converter 75. current stabilization module R13, R14. resistance
60. controller 76. tie point R15, R16. resistance
61. battery voltage detection module 77. tie point Q1. triodes
Q2, Q3.MOS pipe D6, D7. light-emitting diode C3, C4. electric capacity
D1, D2. diode D8. light-emitting diode Z1. voltage-stabiliser tube
D3, D4. diode KM. coil
D5, D9. diode C1, C2. electric capacity
Embodiment
See also Fig. 1, the working state schematic representation of a kind of charger 100 that provides for the utility model first execution mode.Charger 100 can utilize external power supply 10 to battery 20 chargings.
External power supply 10 can be AC power or DC power supply, the electric energy that its energy source can send for civil power or other commercializations or civilian power generation machine, and in the present embodiment, external power supply 10 is an AC power, energy source is a civil power.
Battery 20 is a rechargeable battery, as: nickel-cadmium cell, lithium battery, lead-acid battery and Ni-MH battery or the like, in the present embodiment, it is a lead-acid battery.
Be appreciated that battery 20 is not limited to the single battery on the common meaning, it comprises the power brick with some batteries.
See also Fig. 2, it is the schematic block diagram of the charging circuit of charger 100.The charging circuit of charger 100 has a mains supply line 80 that is connected with battery 20 with external power supply 10, has switch module 30, external power supply detection module 40, modular converter 50, controller 60 and controller supply module 70 at mains supply line 80.The break-make that switch module 30 control chargers 100 are connected with external power supply 10, external power source detection module 40 is connected with switch module 30, detects whether external power supply 10 inputs are arranged, and can send detection information to controller 60.Modular converter 50 can convert the voltage of external power supply 10 inputs the voltage of suitable charger 100 work to.20 chargings of 100 pairs of batteries of controller 60 control chargers, and have resting state and operating state.Controller supply module 70 obtains the electric energy of external power supply 10 or battery 20 to controller 60 power supplies, and satisfies the resting state need for electricity different with operating state.
See also Fig. 3, it is the circuit diagram of the charging circuit of charger 100.Switch module 30 is arranged at the position that is connected with external power supply 10 near mains supply line 80, and it comprises a hand switch 31 and electronic switch 32 that is in parallel.
Hand switch 31 is a non-self-locking mechanical switch, when hand switch 31 is pressed, and the circuit turn-on of its connection, when externally applied forces is cancelled, hand switch 31 automatic disconnections.
Electronic switch 32 can possess the electronic component of on-off function for relay, triode, controllable silicon, solid-state relay or other may command, and in the present embodiment, it is a relay.This relay mainly comprises a coil KM, triode Q1, resistance R 11, R12.Triode Q1 is a NPN type triode, is used for the switch element of whether switching on as coil KM, and its base stage is connected with controller 60 by resistance R 11.Resistance R 12 is in parallel with base stage and the emitter of triode Q1.Coil KM electrically connects mutually with the collector electrode of triode Q1, and electrically connects mutually with controller supply module 70.
When controller 60 control electronic switches 32 closures, can provide a high level to the base stage of triode Q1, thereby make triode Q1 conducting, coil KM energising produces magnetic force, and then makes described relay adhesive, realizes the circuit turn-on of its connection.When controller 60 is cancelled this high level, then triode Q1 just can blocking circuit, and this moment, coil KM can stop energising, and then described relay can disconnect the circuit of its connection.
External power supply detection module 40 is used to detect the electric energy input whether external power supply 10 is arranged, and it is connected with switch module 30 and controller 60, and can send detection signal to controller 60.External power supply detection module 40 can be a sample circuit, an optocoupler power sense circuit or the testing circuit of being made up of a plurality of resistance, and in the present embodiment, it is an optocoupler power sense circuit.External power supply detection module 40 comprises illuminating part 41 and acceptance division 42, illuminating part 41 comprises parallel with one another and reverse light-emitting diode D8 and diode D9, and be connected with switch module 30 by a resistance R 13, when switch module 30 conductings and external power supply 10 input electric energy, illuminating part 41 emits beam.Acceptance division 42 is a phototriode, and it receives described light and conducting is sent detection signal to controller 60.
Modular converter 50 is arranged in the mains supply line 80, and external power supply 10 is changed through the voltage of mains supply line 80 inputs, with suitable battery 20 is charged.Modular converter 50 can be an AC/DC change-over circuit, also a DC/DC change-over circuit be can be, AC/DC change-over circuit and DC/DC change-over circuit also can be had concurrently, in the present embodiment, it is an AC/DC change-over circuit, and the alternating current that external power supply 10 is imported converts direct current to.
Be appreciated that modular converter 50 can also be provided with the function that possesses battery 20 constant current charges and constant voltage charge, because as space is limited, and be techniques well known, be not described in detail at this.
Controller supply module 70 comprises one first power supply circuits 71, second power supply circuits 72 and one the 3rd power supply circuits 73.When not having external power supply 10 inputs, first power supply circuits 71 can obtain the electric energy of battery 20 to controller 60 power supplies under the control of controller 60, second power supply circuits 72 directly obtain the electric energy of battery 20 to controller 60 power supplies, and the 3rd power supply circuits 73 can not be to controller 60 power supplies; When external power supply 10 inputs, controller 60 energy sources only are external power supply 10.
First power supply circuits 71 have identical electric current incoming line 78 with second power supply circuits 72, and electric current incoming line 78 electrically connects mutually with mains supply line 80, form a tie point 79, and tie point 79 is positioned at the position of mains supply line 80 near battery 20, between tie point 79 and modular converter 50, be provided with a diode D1, prevent that the electric current of battery 20 from flowing into modular converter 50.
First power supply circuits 71 mainly comprise a controlled module 74 and a Voltage stabilizing module 75.Controlled module 74 is used to accept the control of controller 60, makes first power supply circuits 71 have two states, i.e. "on" position and no power state, and then realize that whether control first power supply circuits 71 are to controller 60 power supplies.
Controlled module 74 comprises resistance R 4, metal-oxide-semiconductor Q3, capacitor C 1, resistance R 2, resistance R 1 and metal-oxide-semiconductor Q2.Metal-oxide-semiconductor Q3 is in parallel with capacitor C 1 and then is connected with the grid of metal-oxide-semiconductor Q2, and the grid of metal-oxide-semiconductor Q3 is connected with controller 60 through resistance R 4, and resistance R 1 is in parallel with the source electrode and the grid of metal-oxide-semiconductor.In moment after battery 20 inserts charger 100, because capacitor C 1 charging is equivalent to short circuit, therefore the electric current resistance R 1 of can flowing through provides a cut-in voltage for metal-oxide-semiconductor Q2, make metal-oxide-semiconductor Q2 conducting, make first power supply circuits 71 be in "on" position, electric current enters controller 60 through Voltage stabilizing module 75, and this moment, controller 60 meetings provide a voltage to the grid of metal-oxide-semiconductor Q3, make its conducting, thereby keep the "on" position of first power supply circuits 71.When needs first power supply circuits 71 enter the no power state, controller 60 stops to provide voltage to metal-oxide-semiconductor Q3, and then controlled module 74 no longer forms path, and then the grid of metal-oxide-semiconductor Q2 no longer includes the voltage input, then electric current can't pass through metal-oxide-semiconductor Q3, and this moment, first power supply circuits 71 were the no power state.
Be appreciated that; metal-oxide-semiconductor Q2, Q3 can also replace to other electronic components with connecting and disconnecting of the circuit control; as triode, relay etc.; at this as space is limited; do not itemize; but, all should be covered by in the utility model protection range as long as the function of its realization is identical with the utility model or close with effect.
Voltage stabilizing module 75 is a DC/DC change-over circuit, the voltage transitions of first power supply circuits 71 is become to be fit to the direct voltage of controller 60 and supplies with controller 60.When not having external power supply 10 to import, the electric energy that this moment, first power supply circuits 71 obtained battery 20 is to controller 60 power supplies, and Voltage stabilizing module 75 can carry out the voltage of battery 20 inputs step-down with suitable controller 60, and can continual and steady maintenance export this voltage.In the present embodiment, the voltage of supposing battery 20 is 28V and in continuous decline, and the operating voltage of controller 60 is 5V, after then Voltage stabilizing module 75 voltage that battery 20 can be provided is reduced to 5V, offers controller 60 again.When external power supply 10 inputs, because the galvanic voltage through modular converter 50 conversion outputs may be too high, if directly to controller 60 power supplies, then may burn controller 60, at this moment, Voltage stabilizing module 75 can carry out step-down to the electric current of modular converter 50 outputs, and makes it more stable, to be fit to controller 60 power supplies.
Only be provided with a resistance R 10 in second power supply circuits 72, and the carrying load ability of second power supply circuits 72 is less than the carrying load ability of first power supply circuits 71, promptly first power supply circuits 71 can drive more circuit element.Resistance R 10 can be arranged to 1M, 1.5M or 2M or the like, and in the present embodiment, its resistance is 1M.Second power supply circuits 72 and first power supply circuits 71 have a tie point 76, and the two connects the power input terminal of the common access controller 60 in back.Tie point 76 and in order to prevent that electric current can flow to Voltage stabilizing module 75 when first power supply circuits 71 are in the no power state, is provided with a diode D5 between tie point 76 and Voltage stabilizing module 75 between Voltage stabilizing module 75 and controller 60.
When controller 60 is only powered by second power supply circuits 72, because supply current is less, and it is stable inadequately, controller 60 can not carry out data relatively or the work of judging and so on, can enter and keep resting state, when it is waken up, can control controlled module 74 and make first power supply circuits 71 enter "on" position, and then can control electronic switch 32 closures.
Be appreciated that, in order to make second power supply circuits 72 more stable to controller 60 power supplies, and prevent the too high controller 60 that burns of instantaneous voltage in the second circuit, can connect a voltage-stabiliser tube Z1 at tie point 76 places, second power supply circuits 72 are connected to controller 60 power supplies by resistance R 10 and voltage-stabiliser tube Z1 at this moment, because resistance R 10 preventions are big, and the generation pressure drop is bigger, the operating voltage that causes voltage-stabiliser tube Z 1 is less than its rated voltage, and is less and stable thereby realization flows to the electric current of controller 60.In addition, second power supply circuits 72 are by being arranged in parallel a capacitor C 2 with voltage-stabiliser tube Z1, and to satisfy controller 60 when sleep state is waken up, the needs that in the short time power requirement increased sharply prevent because of electricity shortage, cause controller 60 to crash.
The 3rd power supply circuits 73 can utilize the electric energy of external power supply 10 to controller 60 power supplies, and it directly is connected with mains supply line 80, and tie point is positioned at the part after modular converter 50 converts external electric energy to direct current energy.
The 3rd power supply circuits 73 are provided with Voltage stabilizing module, it is the DC/DC change-over circuit, in order to realize circuit optimization, the 3rd power supply circuits 73 and first power supply circuits 71 can shared Voltage stabilizing modules 75, promptly first power supply circuits 71 be connected with Voltage stabilizing module 75 again after the 3rd power supply circuits 73 are connected, thereby form a tie point 77, and the position at first power supply circuits, 71 close tie points 77 is provided with diode D3, and near the position of tie points 77 diode D2 is set at the 3rd power supply circuits 73, the direction of current limit, avoid the electric current of the 3rd power supply circuits 73 to flow into first power supply circuits 71, perhaps the electric current of first power supply circuits 71 flows into the 3rd power supply circuits 73.In order to prevent that circuit from connecting moment, the excessive Voltage stabilizing module 75 that burns of electric current can be provided with resistance R 9 in the circuit between tie point 77 and Voltage stabilizing module 75, to protect Voltage stabilizing module 75.
Be appreciated that, modular converter 50 can have two cathode output ends, and the output voltage difference of these two outputs, one is applicable to and is used for to battery 20 charging, another is applicable to and is used for to controller 60 power supplies that this moment the 3rd, power supply circuits 73 directly were connected for the output of controller 60 power supplies with modular converter 50, so, the 3rd power supply circuits 73 can not connect Voltage stabilizing module 75, directly to controller 60 power supplies.
The tie point that is appreciated that the coil KM of electronic switch 32 and controller supply module 70 is between Voltage stabilizing module 75 and diode D5.
First power supply circuits 71, second power supply circuits 72 and the 3rd power supply circuits 73 are to controller 60 electric power thus supplied such as following table one.
Table one
When not having external power supply 10 and battery 20 to insert charger 100, charger 100 can not carry out any work as sequence number 1; When not having battery 20 as external power supply 10 accesses as sequence number 2 and 3, controller 60 can not controlled and connect electronic switch 32, this moment, the crawl hand switch 31, can power to controller 60 by the 3rd power supply circuits 73, but controller 60 can not carry out work because of not finding battery 20.
As sequence number 4,5,6, shown in 7 and 8, when battery 20 is packed charger 100 into when there not being external power supply 10 to insert, first power supply circuits 71 and second power supply circuits 72 are all to controller 60 power supplies (as sequence number 4), and the supply current of first power supply circuits 71 is greater than the supply current of second current supply circuit 72, controller 60 judges whether battery 20 needs charging, when not needing to charge, controller 60 can not controlled electronic switch 32 and connect, when battery 20 needs charging (as sequence number 5), then controller 60 control electronic switches 32 are connected, and detect whether there are external power supply 10 inputs by external power supply detection module 40, this moment is not if find external power supply 10 inputs, then controller 60 makes first power supply circuits, 71 no powers (as sequence number 6), and disconnects electronic switch 32, is only powered by second power supply circuits 72.Controller 60 often certain interval of time is connected one time first power supply circuits 71, and controls electronic switch 32 and connect once (as sequence number 7), has judged whether external power supply 10 inputs.
Shown in sequence number 8, when finding external power supply 10 inputs are arranged, then control electronic switch 32 and connect, and control charger 100 begins battery 20 chargings, this moment the 3rd, current supply circuit 73 was connected and to controller 60 power supplies.Owing to the line length reason, cause being higher than the voltage of first power supply circuits 71 at the voltage of tie point 77 places the 3rd power supply circuits 73, therefore, first power supply circuits 71 are after 73 conductings of the 3rd power supply circuits, just no longer to controller 60 power supplies.
Shown in sequence number 9, after battery 20 is full of, controller 60 control electronic switches 32 disconnect, this moment, controller 60 was only by 72 power supplies of second power supply circuits, charger 100 can not consume the electric energy of external power supply 10, and because second power supply circuits, 72 supply currents are less, the electric energy of its consuming cells 20 is also considerably less, thereby realizes that whole charger 100 saves electric energy very much.
Shown in sequence number 10, after battery 20 was full of, every certain interval of time controller 60 controls first power supply circuits 71 were connected once, and this moment, controller 60 judged whether battery 20 needs charging, then repeat aforementioned functional if desired, do not need then to control first power supply circuits 71 and stop power supply.
Shown in sequence number 11,12, when external power supply 10 and battery 20 all insert charger 100, in controller 60 is not made the corresponding time of carrying out battery 20 chargings as yet, if hand switch 31 is switched on, this moment, charger 100 began immediately to battery 20 chargings (as sequence number 11), and control electronic switch 32 closures (as sequence number 12), thereby realized the function that quick response is charged.
When if battery 20 is packed charger 100 into, overdischarge even discharge fully, it may not have enough electric energy to finish the function of aforementioned sequence number 7 and 8, be that controller 60 can't provide enough electric energy that electronic switch 32 is connected, if there is not closed hand switch 31 this moment, then charger 100 can't begin battery 20 is charged, if closed hand switch 31, then external power source 10 can be by the 3rd power supply circuits 73 to controller 60 power supplies, thereby controller 60 can be controlled and connect electronic switch 32, even disconnect hand switch 31 this moment, electric energy also can enter the 3rd power supply circuits 73 from electronic switch 32, thereby guarantee controller 60 is powered, and then can realize that 100 pairs of batteries 20 of whole charger charge.
Be appreciated that a button cell also can be set separately provides electric energy under the resting state for controller 60, and make controller 60 can connect first power supply circuits 71, thereby can save second power supply circuits 72.
Controller 60 is used to control charger 100 to battery 20 chargings, and it is connected with a battery voltage detection module 61, charging voltage detection module 62, clock circuit 63, indicating module 64 and charging current detection module 65.Controller 60 inside also are integrated with watchdog circuit, are used for waking controller 60 up when controller 60 enters resting state.
Battery voltage detection module 61 is connected with controller supply module 70, after battery 20 inserts charger 100, detects the voltage of battery 20, and to controller 60 its detection information of feedback, carries out the magnitude of voltage that computing draws battery 20 by controller 60.
Charging voltage detection module 62 is used for being battery 20 charging processes at charger 100, detects charging voltage, and to controller 60 its detection information of feedback, carries out computing by controller 60 and draw charging voltage.
Clock circuit 63 is used for providing the clock source to controller 60, and can obtain electric energy by slave controller 60, to keep the work of this clock circuit 63.
Be appreciated that clock circuit 63 is an external low-frequency clock circuit, when controller 60 enters resting state, can stop to clock circuit 63 supply of electrical energy, thereby save electric energy.
Indicating module 64 comprises some light-emitting diodes, and it is luminous or change glow color under the control of controller 60, and the variation of glow color can be used for representing whether the operating state of charger 100 or battery 20 are filled.In the present embodiment, two light-emitting diode D6, D7 are set, and send the light of red and green two kinds of colors respectively.The state of LED, the state of corresponding charger is shown in following table two.
Table two
Controller 60 slave controller supply modules 70 obtain electric energy, can send control signal to electronic switch 32 and controller supply module 70, and can provide electric energy to clock circuit 63 and indicating module 64.
Be appreciated that, when the detection signal that sends according to external power supply detection module 40 at controller 60 judges whether the input of external power supply 10, can be different because of the concrete composition of external power supply detection module 40, cause judgment mode different, such as, external power supply detection module 40 can be sample circuit, be its electric energy work of obtaining battery 20, and the input of external power supply 10 carried out sample detecting, when not detecting the input of external power supply 10, its output low level is given controller 60, when detecting the input of external power supply 10, its output high level is given controller 60, and with respect to controller 60, the low level or the high level of 40 outputs of external power supply detection module are detection signal.In the present embodiment, external power supply detection module 40 is the optocoupler power sense circuit, when the input of external power supply 10, the detection signal of external power supply detection module 40 outputs is the signal of telecommunication, when not having the input of external power supply 10, the detection signal of external power supply detection module 40 outputs is a null value, and promptly it does not send the signal of telecommunication, controller 60 is judged the input whether external power supply 10 is arranged according to receiving the signal of telecommunication or null value.Certainly; whether controller 60 draws by external power supply detection module 40 has the technical scheme of external power supply 10 inputs to be not limited thereto; cause as space is limited; do not carry out exhaustive once more; but, all should be covered by in the utility model protection range as long as effect and the utility model of its technology that adopts and realization are same or similar.
See also Fig. 4, be the workflow diagram of 100 pairs of batteries of controller 60 control chargers, 20 chargings.
When battery 20 charger 100 of packing into, first power supply circuits 71 and second power supply circuits 72 all obtain electric energy to controller 60 power supplies from battery 20, controller 60 is started working, it is kept first power supply circuits 71 and is in "on" position, and draw battery 20 voltages by the detection data operation that battery voltage detection module 61 provides, and by judging relatively with controller 60 inner predeterminated voltage values whether battery needs charging, in the present embodiment, being exemplified as hypothesis predeterminated voltage value is 26V, when controller 60 finds that the voltage of battery 20 is greater than 26V, think that then battery 20 does not need charging, the voltage of finding batteries 20 when controller 60 thinks then that smaller or equal to 26V battery 20 needs charging.
When battery 20 did not need to charge, controller 60 controls first power supply circuits 71 entered the no power state, and only by 72 power supplies of second power supply circuits, charging process finishes for it, and controller enters resting state; When detecting battery 20 needs chargings, controller 60 control electronic switches 32 closures, and detect by external power supply detection module 40 whether external power supply 10 inputs are arranged, when not finding external power supply 10, controller 60 controls first power supply circuits 71 enter the no power state, it is only by 72 power supplies of second power supply circuits, this moment, controller 60 entered resting state, and every certain interval of time is waken up once by its inner watchdog circuit, after being waken up, it connects first power supply circuits 71, and control electronic switch 32 closures immediately once, detect by external power supply testing circuit 40 whether external power supply 10 inputs are arranged, when not having external power supply 10 inputs, enter dormancy once more, and repeat to be waken up the step that detects external power supply 10; When finding external power supply 10 inputs, then begin battery 20 chargings.
Be appreciated that, controller 60 every certain interval of times are waken up from park mode, this time interval can prolong gradually, be waken up once as per 3 second controls 60 in initial 5 minutes, and control electronic switch 32 closures, detect whether external power supply 10 is arranged, if there is not external power supply 10, then changed 30 seconds into and be waken up once, change per 10 minutes after 10 minutes into and wake up once at the 6th minute to the 10th minute.Certainly; the rule of waking controller 60 up that the utility model is not limited to describe in the present embodiment; those skilled in the art can also make other changes, but as long as its technical spirit is identical with the utility model or close, all should be covered by in the utility model protection range.
In charging process, controller 60 is by obtaining battery voltage detection module 61, charging voltage detection module 62 and charging current detection module 65 detected data, judge whether battery 20 is full of, can certainly judge whether battery 20 is full of only according to the item number certificate in cell voltage, charging voltage or the charging current.In the present embodiment, only be exemplified as and judge according to charging current whether battery 20 is full of, a predetermined current value is set in controller 60, such as being 300mA, after 60 pairs of controllers carry out computing by charging current detection module 65 detected data, if the current value that draws, thinks then that battery 20 is not full of greater than 300mA, need to continue charging; When the current value that draws smaller or equal to 300mA, controller 60 can think that battery 20 has been full of, and then controls electronic switch 32 and disconnects the complete charge process.
Be appreciated that, after battery 20 was full of, if do not break away from charger 100, then charger 100 can enter resting state, only by 72 power supplies of second power supply circuits, after this controller 60 every certain interval of times are waken up once, connect first power supply circuits 71 and detect cell voltage, if controller 60 finds that battery 20 needs charging, then 100 pairs of batteries of its control charger, 20 chargings, if battery 20 does not need charging, then it controls first power supply circuits, 71 no powers, and then enters resting state.
Compared with prior art, charger of the present utility model is provided with hand switch and electronic switch, described hand switch and described electronic switch are in parallel, when described hand switch is closed, described external power supply can be to described controller power supply, and described controller can be controlled described electronic switch closes. Can realize utilize external power supply to charge to battery, thereby the user's who satisfies needs being avoided battery is produced unnecessary waste when battery when discharge or electric weight are extremely low fully by this scheme.
What it may occur to persons skilled in the art that is; the utility model can also have other implementation; but as long as its technical spirit that adopts is identical with the utility model or close, perhaps any variation of making based on the utility model and replacement are all within protection domain of the present utility model.

Claims (8)

1. charger comprises:
Utilize the charging circuit of external power supply to battery charge;
Be used to control the controller of described charger work;
Can be operated closure or disconnection, and then control the hand switch of described charging circuit energising or outage;
The electronic switch that is in parallel with hand switch;
It is characterized in that: described controller can be controlled described electronic switch closes or disconnection, and when described hand switch was closed, described external power supply can be to described controller power supply, and described controller can be controlled described electronic switch closes.
2. according to the described charger of claim 1, it is characterized in that: described charger has the external power supply power supply circuits that are connected with described controller, when described hand switch or electronic switch closes, described external power supply power supply circuits can utilize the electric energy of described external power supply to power to described controller.
3. according to the described charger of claim 2, it is characterized in that: described external power supply power supply circuits are provided with a DC/DC change-over circuit.
4. according to the described charger of claim 3, it is characterized in that: described external power supply is an AC power, described charger has an AC/DC change-over circuit, converts the alternating current of described external power supply to direct current, and the electric current that flows into described external power supply power supply circuits is described direct current.
5. according to the arbitrary described charger of claim 1 to 4, it is characterized in that: described hand switch is non-self-locking mechanical switch.
6. according to the described charger of claim 5, it is characterized in that: described electronic switch is relay, triode, controllable silicon or solid-state relay.
7. according to the described charger of claim 6, it is characterized in that: described relay has coil and triode, and described controller realizes by control triode conducting or blocking-up whether control coil switches on.
8. according to the described charger of claim 7, it is characterized in that: the energy source of the described coil of flowing through is described external power supply.
CN2010201185553U 2010-02-05 2010-02-05 Charger Expired - Lifetime CN201616699U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102148524A (en) * 2010-02-05 2011-08-10 苏州宝时得电动工具有限公司 Charger
CN103199572A (en) * 2012-01-07 2013-07-10 苏州宝时得电动工具有限公司 Charging base station and charging method
CN110770962A (en) * 2018-09-27 2020-02-07 深圳市大疆创新科技有限公司 Battery butler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102148524A (en) * 2010-02-05 2011-08-10 苏州宝时得电动工具有限公司 Charger
CN102148524B (en) * 2010-02-05 2014-12-17 苏州宝时得电动工具有限公司 Charger
CN103199572A (en) * 2012-01-07 2013-07-10 苏州宝时得电动工具有限公司 Charging base station and charging method
CN103199572B (en) * 2012-01-07 2016-08-03 苏州宝时得电动工具有限公司 charging base station and charging method
CN110770962A (en) * 2018-09-27 2020-02-07 深圳市大疆创新科技有限公司 Battery butler
WO2020061930A1 (en) * 2018-09-27 2020-04-02 深圳市大疆创新科技有限公司 Battery manager

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