CN1848587B - Nickel-hydrogen and nickel-cadmium cell series type automatic changing speed charger - Google Patents

Nickel-hydrogen and nickel-cadmium cell series type automatic changing speed charger Download PDF

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Publication number
CN1848587B
CN1848587B CN2005100133127A CN200510013312A CN1848587B CN 1848587 B CN1848587 B CN 1848587B CN 2005100133127 A CN2005100133127 A CN 2005100133127A CN 200510013312 A CN200510013312 A CN 200510013312A CN 1848587 B CN1848587 B CN 1848587B
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charging
voltage
battery
current
switch
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CN2005100133127A
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Chinese (zh)
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CN1848587A (en
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杨福义
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杨福义
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Abstract

The invention discloses a nickel-cadmium and nickel-hydrogen cell series type automatic variable speed charger consisting of a shell, a switching type power supply, a battery, a charging controller and a microcontroller. The microcontroller controls a voltage regulating unit and a current regulating unit. The current regulating unit is connected to a current sensing unit. The charging voltage and current are decided by the number of the sensing battery, and the charging current is in inverse proportion to the number of the battery and is automatic variable current. The number of the variable current segment is that of the battery, so that the multi-segment variable speed charging mode is formed, and the fully charging time is automatically regulated according to the battery number.

Description

Ni-mh, nickel-cadmium cell series type automatic changing speed charger

One, technical field

The present invention relates to a kind of ni-mh, nickel-cadmium cell series type automatic changing speed charger.

Two, background technology

Universal day by day along with the 3C portable electronic product, the battery requirements amount also increases thereupon, because disposable battery need abandon after using up, not only increases use cost, also causes problem of environmental pollution.So rechargeable battery (or claim secondary cell) with respect to disposable battery, more can save money and reduce the problem of refuse battery environmental pollution, so usage quantity constantly increases, and makes corresponding battery charger demand also growing.

The charger of existing ni-mh or nickel-cadmium cell has plenty of the parallel charging of employing, has plenty of the charging of the tandem of employing.Wherein, parallel charger because of the selection of Electronic Control part with set difficultly, can't overcome the extremely requirement of speed charging, so its defective is arranged.The tandem charger; Be to adopt decide electric current and to reach and decide voltage several series connected battery are charged, and along with the progress of electronic science and technology, to the charging of secondary cell; Improve to quick charge by early stage charging at a slow speed (more than eight hours); But also need four, five hours approximately because of what quick charge had, thus be improved to extremely speed charging recently again, even to the charging of so-called ultra extremely speed.

Consult Fig. 1, shown in Figure 2, existing a kind of quick charger decomposition texture sketch map and stereochemical structure combination sketch map are because it is to adopt to decide electric current and decide voltage four series-connected cells are charged; So charging interval of four batteries is identical, the time of also promptly filling four batteries is as being four hours, and the time of only filling a battery also is four hours; The user can't adjust the charging interval voluntarily according to number of battery cells; Like this, for the consumer of being badly in need of the use battery, possibly be that slow action cannot save a critical situation; This quick charger 10 neither not have advantage; Because its charging rate is not a speed extremely, so that power does not need is very big, so it can be with building in the exchange type power 12 on the circuit board 13; And the plug 14 that is connected with the external AC electric current also can be located at housing 15 bottoms; And need not connect the use transformer in addition, so overall volume is less, be convenient for carrying use.

It mainly is to cross the improvement design of being carried out for a long time to 10 charging intervals of quick charger for extremely fast charger, and it is to adopt a charging circuit to provide a bigger constant current as charging current, and secondary cell is charged; Because electric current (I) and time (T) are the factors of decision electric charge, i.e. battery electricity capacity (Q)=electric current (I) X time (T), in other words; This electric current (I) was inversely proportional to the time (T); When so charging current is big, can very soon battery be filled full, Here it is so-called extremely fast charger., so, the power of building exchange type power in this needs bigger; Also being transformation needs to increase with the volume of coil block; As shown in Figure 3, this extremely fast charger 20 is external with exchange type power, forms an AC/DC transformer 21 kenels; Be connected with AC power supplies with plug 22 or extended line plug 23 again, carry more inconvenient like this and the increase cost.

Therefore, quick charger and extremely fast charger respectively have its pluses and minuses, how to capture extremely the practicality of speed charging, and have advantages such as the power small size of quick charge is little, are the problem that institute of the present invention desire solves.

Three, summary of the invention

Main purpose of the present invention is to provide a kind of ni-mh, nickel-cadmium cell series type automatic changing speed charger, and it has the effect that can determine the charging interval speed according to own battery requirements.

A purpose more of the present invention provides a kind of ni-mh, nickel-cadmium cell series type automatic changing speed charger; It uses transmission principle; Make small-power also can reach the function of quick charge, let the switched power supplier volume-diminished and in build in the charger, reach the effect that is convenient for carrying and uses.

The objective of the invention is to realize by following technical scheme.

Ni-mh of the present invention, nickel-cadmium cell series type automatic changing speed charger especially to several batteries of series connection, according to the detecting number of battery cells, carry out the charging of multistage speed change; It includes:

One housing, in order to the spare part of ccontaining charging usefulness, the surface is provided with the charging slot of a tandem charge circuit, supplies several batteries to insert charging, and picks out a plug that electrically connects with AC power supplies;

One exchange type power (EXCHANGE POWER UNIT) is located in this housing, in order to this AC power supplies being converted to DC power supply several battery charge to connecting on the charging slot, and provides a reference voltage (REFERENCE VOLTAGE) to give the charging regulation device; The output of exchange type power 40 is connected to two unilateral diodes; One of them unilateral diode D5 is connected respectively to the impedance 451 and voltage-adjusting unit 43 of the sense terminal of current sense unit 45, and exchange type power 40 provides above-mentioned reference voltage to charging regulation device 42 through another unilateral diode (D6);

Switch element of charge circuit separately parallel connection of several batteries of series connection is provided with the electronic component of unidirectional conducting between switch element and the battery anode;

One charging regulation device, its microcontroller (MICRO-CONTROLLER) has a time control unit (TlME CONTROL UNIT) and one number of battery cells/detecting voltage system (BATTERIES QUANTITY/VOLTAGE DETECT SYSTEM); Wherein this time control unit is conducting (ON) or open circuit (OFF) that controls each switch element respectively separately, this number of battery cells/detecting voltage system, and independent respectively its terminal voltage of battery anode detecting to the battery charge loop, and record the rechargeable battery number;

Microprocessor controls one voltage-adjusting unit (VOLTAGE REGULATION UNIT) and a current adjustment unit (CURRENT REGULATION UNIT); Voltage-adjusting unit and current adjustment unit connect respectively to the optical coupling switch ends, and current adjustment unit connects a current sense unit (CURRENT DETECTION UNIT);

Wherein, optical coupling switch 46 is arranged between this exchange type power 40 and current adjustment unit 44 and the voltage-adjusting unit 43;

With detecting number of battery cells (N) decision charging voltage and charging current; And making charging current supply with number of battery cells (N) is inversely proportional to and autoconverter; And the unsteady flow hop count is number of battery cells (N), with formation multistage speed change charge mode, and according to the automatic speed that fills the full time of adjusting of number of battery cells (N).

Wherein, charging voltage is according to the automatic transformation of detecting number of battery cells, and is inversely proportional to autoconverter.

Wherein, charging voltage is for deciding voltage.

Wherein, switch element adopts power-type MOSFET, and the electronic component of said unidirectional conducting is selected from diode or MOSFET.

Wherein, microcontroller also is connected with an AA/AAA battery selector (SELECTOR) and a display unit (DISPLAY UNIT); This display unit is located at surface of shell, and in order to show charged state, it is that the arbitrary form of LED or LCD constitutes.

Wherein, the microcontroller periphery also comprises and is connected with the cooling system (COOLIN SYSTEM) that a temperature detecting unit (TEMPERATURE DETECTION) and is made up of fan or fin.

Wherein, the sense terminal of current sense unit is provided with an impedance; The sense terminal of this current sense unit and impedance are located at the negative end or the positive end of charge circuit.

Ni-mh of the present invention, nickel-cadmium cell series type automatic changing speed charger refer to several batteries of series connection are complied with the detecting number of battery cells especially, carry out two sections speed changes chargings; It is characterized in that, include:

One housing, in order to the spare part of ccontaining charging usefulness, its surface is provided with the charging slot of a tandem charge circuit, supplies several batteries to insert charging, and picks out the plug that electrically connects with AC power supplies;

One exchange type power (EXCHANGE POWER UNlT) is located in this housing, in order to this AC power supplies being converted to DC power supply several battery charge to connecting on the charging slot, and provides a reference voltage (REFERENCE VOLTAGE) to give the charging regulation device; The output of exchange type power 40 is connected to two unilateral diodes; One of them unilateral diode D5 is connected respectively to the impedance 451 and voltage-adjusting unit 43 of the sense terminal of current sense unit 45, and exchange type power 40 provides above-mentioned reference voltage to charging regulation device 42 through another unilateral diode (D6);

Switch element of charge circuit separately parallel connection of several batteries of series connection is provided with the electronic component of unidirectional conducting between switch element and the battery anode;

One charging regulation device, its microcontroller (MICRO-CONTROLLER) has a time control unit (TIME CONTROL UNIT) and one number of battery cells/detecting voltage system (BATTERIES QUANTITY/VOLTAGE DETECT SYSTEM); Wherein this time control unit is conducting (ON) or open circuit (OFF) that controls each switch element respectively separately, this number of battery cells/detecting voltage system, and independent respectively its terminal voltage of battery anode detecting to charge circuit, and record the rechargeable battery number;

A this microprocessor controls-voltage-adjusting unit (VOLTAGE REGULATION UNIT) and a current adjustment unit (CURRENT REGULATION UNIT); Voltage-adjusting unit and current adjustment unit connect respectively to the optical coupling switch ends, and current adjustment unit connects a current sense unit (CURRENT DETECTION UNIT);

Wherein, optical coupling switch (46) is arranged between the output and current adjustment unit (44) and voltage-adjusting unit (43) of this exchange type power (40);

With detecting number of battery cells decision charging voltage and charging current, be in two the time when measuring rechargeable battery, charging voltage descends; Charging current rises; Switch to doubly the speed charging, if two autoconverters then when above switch to and charge normal; This forms two sections speed change charge modes, adjusts automatically according to number of battery cells.

Ni-mh of the present invention, nickel-cadmium cell series type automatic changing speed charger refer to several batteries parallelly connected again to series connection especially, carry out the charging of friction speed; It is characterized in that, include:

One housing; In order to the spare part of ccontaining charging usefulness, its surperficial charging slot is two batteries, first group of constituting parallel with one another again and second group of charge circuit after two battery series connection; Can supply four batteries to insert charging, and housing pick out the plug that electrically connects with AC power supplies;

The charge circuit separately of each series-connected cell parallel connection one switch element, and between switch element and battery anode, be provided with the electronic component of unidirectional conducting;

-exchange type power (Exchange Power Unit) is located in this housing, in order to this AC power supplies converted to the DC power supply and to provide a reference voltage (Reference Voltage) to give the charging regulation device;

-electric current assignment control (Current, Partition Unit), first and second charging current of DC power supply formation that this exchange type power is seen off is delivered to first group and second group of charge circuit respectively;

-charging regulation device, its microcontroller (MICRO-CONTROLLER) possesses a time control unit (TIME CONTROL UNIT) and one number of battery cells/detecting voltage system (BATTER1ES QUANTITY/VOLTAGE DETECT SYSTEM); Wherein this time control unit is conducting (ON) or open circuit (OFF) that controls each switch element respectively separately, this number of battery cells/detecting voltage system, and independent respectively its terminal voltage of battery anode detecting to charge circuit, and record the rechargeable battery number;

Make this electric current assignment control export bigger charging current to the first a group charge circuit respectively by this charging regulation device and carry out extremely speed charging; And less charging current to the second a group charge circuit carries out quick charge; Fill when full Deng first group of charge circuit; Convert second group of charge circuit again to and carry out extremely speed charging, form two phase transition speed change charge modes and adjustment automatically in view of the above.

The beneficial effect of ni-mh of the present invention, nickel-cadmium cell series type automatic changing speed charger is; It includes :-housing; Spare part in order to ccontaining charging usefulness; Its surface is provided with the charging slot of a tandem charge circuit, can supply several batteries to insert charging, and picks out the plug that an ability is connected with AC power supplies; One exchange type power (EXCHANGH POWER UNIT) is located in this housing, AC power supplies is converted to the DC power supply several batteries of connecting on the charging slot is charged, and a reference voltage (REFERENCE VOLTAGE) is provided for the charging regulation device; Several batteries of series connection, it is charge circuit parallel connection one switch element separately, and between switch element and battery anode, is provided with the electronic component of unidirectional conducting; One charging regulation device, its microcontroller (MICRO-CONTROLLER) possesses a time control unit (TIME CONTROL UNIT) and one number of battery cells/detecting voltage system (BATTERIES QUANTITY/VOLTAGE DETECT SYSTEM); This time control unit wherein, conducting (ON) or open circuit (OFF) of each switch element of control separately respectively, respectively separately to its terminal voltage of battery anode detecting in battery charge loop, and record the rechargeable battery number at this battery a few days/detecting voltage system; Microprocessor controls one voltage-adjusting unit (VOLTAGE REGULATION UNIT) and a current adjustment unit (CURRENT REGULATION UNIT), and this current adjustment unit connects a current sense unit (CURRENT DETECTION UNIT); And with detecting number of battery cells (N) decision charging voltage and charging current; Voltage-adjusting unit and current adjustment unit connect respectively to the exchange type power two ends; And making charging current supply with number of battery cells (N) is inversely proportional to and autoconverter; And the unsteady flow hop count changes according to number of battery cells (N), forms multistage speed change charge mode according to this, adjusts the speed that fills the full time automatically according to number of battery cells (N).

The present invention more comprises: with detecting number of battery cells decision charging voltage and charging current, be in two the time when measuring rechargeable battery, switch to doubly speed and charge; If two autoconverters then when above; Switch to and charge normal, form two sections speed change charge modes according to this, adjust automatically according to number of battery cells.

According to the present invention; This rechargeable battery can be divided into two groups of series-parallel charge circuits; Make an electric current assignment control export bigger charging current to the first a group charge circuit respectively by this charging regulation device and carry out extremely speed charging, reach less charging current to the second a group charge circuit and carry out quick charge, wait first group of charge circuit to fill when satisfying; Convert second group of charge circuit again to and carry out extremely the speed charging, form adjustment automatically between the charge mode of two phase transition conversion rates according to this.

Thus, the present invention uses the speed change charging principle, and the time is that each battery is independently controlled, and under the situation that does not increase exchange type power power, can reach the double effects of extremely speed charging and quick charge.

Four, description of drawings

Fig. 1 is the stereochemical structure decomposing schematic representation of existing a kind of charger.

Fig. 2 is existing a kind of charger perspective view.

Fig. 3 is the perspective view of existing another charger.

Fig. 4 is a stereochemical structure schematic appearance of the present invention.

Fig. 5 is of the present invention one feasible charging circuit calcspar.

Fig. 6 is another feasible charging circuit calcspar of the present invention.

Fig. 7 is the automatic transformation and the unsteady flow sketch map of first embodiment of the invention.

Fig. 8 is the autoconverter sketch map of first embodiment of the invention.

Fig. 9 is four sections speed change charging sketch mapes of first embodiment of the invention.

Figure 10 is the workflow sketch map of first embodiment of the invention.

Figure 11 is the workflow sketch map of second embodiment of the invention.

Figure 12 is the charging voltage and the current diagram of second embodiment of the invention.

Figure 13 is two sections speed change charging sketch mapes of second embodiment of the invention.

Figure 14 is the present invention's feasible charging circuit calcspar again.

Figure 15 is the workflow sketch map of third embodiment of the invention.

Figure 16 is the charging voltage and the current diagram of third embodiment of the invention.

Main label declaration among the figure: 30 chargers; 31 housings; 32 charging slots; 33 plugs; 34 extended lines; 40 exchange type powers; 41 reference voltages; 42 charging regulation devices; 421 microcontrollers; 422 time control units; 423 number of battery cells/detecting voltage system; 43 voltage-adjusting units; 44 current adjustment units; 45 current sense unit; 451 impedances; 46 optical coupling switches; 47 selectors; 48 display units; 49 temperature detectings; 50 cooling systems; 51 electric current assignment control; 52 first charge circuits; 53 second charge circuits; The SW1 switch element; The SW2 switch element; The SW3 switch element; The SW4 switch element; The D1 diode; The D2 diode; The D3 diode; The D4 diode; The D5 diode; The D6 diode; R1 resistance.

Five, embodiment

Consult shown in Figure 4, ni-mh of the present invention, nickel-cadmium cell series type automatic changing speed charger 30, the general commercially available extremely fast charger of its volume ratio is little; Approaching general quick charger volume, also is that the power of the exchange type power (figure four does not show) built in the housing 31 is few with the difference power of general quick charger, and its surface is provided with and can supplies several batteries to insert the charging slot 32 of charging; Present embodiment discloses can supply four battery charge, but is not limited to this, and these housing 31 bottoms can directly be provided with the plug 33 that is connected with AC power supplies; Or pick out with extended line 34 and to be provided with plug; All must external transformer, volume is light and handy, so be convenient for carrying.As how this low power exchange type power; Make charger reach the extremely function of speed charging, then be the ingenious design on the charging circuit of the present invention, the present invention just uses transmission principle; The charging interval of each battery is independent control; Can adjust automatically according to consumer's battery consumption demand and fill full time speed, its main charging circuit is as shown in Figure 5, includes:

-exchange type power 40; Be located in this housing 31; Plug 33 input AC power supplies to exchange type powers 40 convert the DC power supply to several batteries B1 one B4 that connects on the charging slot 32 are charged, battery B1 one B4 charge circuit parallel connection one switch element SW1 one SW4 separately; The switch element SW1-SW4 here can be power-type MOSFET, but is not limited to this; Between switch element SW1-SW4 and each battery B1 one B4 anode, be provided with electronic component D1 one D4 of unidirectional conducting in addition, the electronic component here is a diode, also can be MOSFET, but is not limited to this.Again, this exchange type power 40 provides a reference voltage 41 to charging regulation device 42.

Charging regulation device 42; Its microcontroller 421 possesses a time control unit 422 and one number of battery cells/detecting voltage system 423, and wherein, this time control unit 422 is with+△ V; O △ V or-△ V; Wherein arbitrary detecting voltage mode, conducting (ON) or open circuit (OFF) of independent respectively each switch element of control SW1 one SW4, this number of battery cells/detecting voltage system 423; Separately the battery anode of aforementioned battery B1 one B4 charge circuit is detected its terminal voltage respectively, and record the number of rechargeable battery B1 one B4.

This microcontroller 421 control-voltage-adjusting units 43 and a current adjustment unit 44, and this current adjustment unit 44 connects a current sense unit 45; The sense terminal of this current sense unit 45 is provided with an impedance 451; Present embodiment with resistance R 1 as impedance; The sense terminal of present embodiment and impedance 451 are located at the negative end in battery charge loop; But be not limited to this, for example shown in Figure 6, the sense terminal of this current sense unit 45 and impedance 451 also can be located at the positive end in battery charge loop; This is that equivalent structure changes, so do not give unnecessary details.

The output of this exchange type power 40 comprises and is equipped with two unilateral diode D5, D6, and and electric current and voltage-adjusting unit 44, also is provided with an optical coupling switch 46 between 43.

In addition, this microcontroller 421 connects an AA/AAA battery selector 47 and a display unit 48, and this display unit 48 is located at housing 31 surfaces; In order to show charged state; Present embodiment adopts several LED, also can adopt LCD to constitute, in addition; Microcontroller 421 peripheries also comprise and are provided with temperature detecting 49, and comprise the cooling system 50 that is made up of fan or radiating fin; The above quaternary part of carrying can be prior art, or is selectable elements, because of non-patent target of the present invention, so do not give unnecessary details.

By the technology contents of above-mentioned announcement, first possible embodiments of NI-G of the present invention or Ni-MH battery series type automatic changing speed charger is N when charging regulation device 42 detects number of battery cells shown in the electric current and voltage variation diagram of Fig. 7; Automatically become N section speed change charge mode, the charging slot 32 of present embodiment can ccontaining four batteries, therefore become four sections speed changes; Also promptly working as battery is four; Then make its charging interval be set as 60mins, this moment, charging current was 2A, and voltage is 8V; When rechargeable battery is 3, make that its charging interval is 45mins, charging current increases to 3A, and voltage is reduced to 6V; More than ask during the charging of three, four rechargeable batteries, be same as existing quick charge, still, like extremely speed charging of needs; Then the user does not insert four batteries, only need insert two or a battery, and at this moment, the charging current autoconverter is 4A or 5A; Voltage is then reduced to 4V or 2V, when also promptly filling two batteries, only needs 30mins, when filling a battery; Only need 15mins, so if the not anxious use battery of consumer can all charge by four batteries simultaneously; As be badly in need of using battery, and then insert two or a battery, can at short notice battery be filled full.So; First embodiment of the invention is with detecting cell number N decision charging voltage V and charging current A; And make the supply of charging current A and number of battery cells N be inversely proportional to and autoconverter; And the unsteady flow hop count changes according to number of battery cells, forms multistage speed change charge mode according to this, also promptly adjusts the speed that fills the full time automatically according to number of battery cells.

The charging voltage of the foregoing description is according to the automatic transformation of detecting number of battery cells, and is inversely proportional to autoconverter.In addition, also can be as shown in Figure 8, this charging voltage is for to decide voltage, and charging current is an autoconverter, also can reach four sections speed change charge modes.

Consult shown in Figure 9ly, be the charging circuit sketch map of four sections speed changes of the present invention, it is controlled the charging interval of each battery separately by switch element SW1-SW4; When having only a battery B1 in charging, switch element SW1 opens circuit (OFF), rest switch element SW2-SW4 conducting (ON); Make charging current A only through battery B1, when two battery B1, B2 charging, then SW1 and SW2 open circuit (OFF); SW3 one SW4 conducting (ON), the rest may be inferred, when four battery B1 to B4 charge; Then four of switch element SW1 to SW4 all open circuit (OFF), let charging current A charge through four batteries.

Consult shown in Figure 10ly, be the workflow sketch map of four sections speed change charge modes of the present invention, by beginning detecting number of battery cells N earlier; And then decision charging voltage and electric current, first section is when the rechargeable battery number N is 4, charging current I is 2A; Charging voltage V is 8V

Filling the full time is 60mins; As the number of battery cells N that detects then is second section charging when being 3, and promptly charging current I autoconverter is 3A, and the automatic transformation of charging voltage V is 6V, fills full time 45mins; The rest may be inferred, when detecting number of battery cells N is 1, then is the 4th section charge mode, and promptly charging current I is 5A, and charging voltage is 4V, and then filling the full time is 15mins; Has the extremely function of speed charging; Above-mentioned charging voltage V can be automatic transformation, and is inversely proportional to autoconverter, also can be and decides voltage, promptly is always 8V, reaches four sections speed change charge modes.

It is above that what disclose is four sections speed change charge modes, because being two, a lot of situation of secondary cell use simultaneously, so, the second embodiment of the present invention; Shown in figure 11, adopt two sections speed change charge modes, when promptly beginning, detect number of battery cells earlier; If amount of batteries is in 2, then switch the multiple charging, be more than 2 like battery; Then switch and charge normal,, wait to fill and promptly finish after full no matter be the multiple charging or charge normal.The charging voltage and the change in current of the charging of two sections speed changes of this kind, shown in figure 12, also promptly when rechargeable battery has 3-4, its charging voltage is 8V, charging current 2A, the charging interval is 60mins, this is for charging normal; When battery had only 1-2, charging voltage descended, and charging current rises; The charging of formation multiple, so the time can be saved half, its principle is identical with aforementioned four sections speed change charge modes; So repeat no more, and its charged state according to the different two sections speed changes that form of number of battery cells is shown in figure 13.

Consult shown in Figure 14; The charging circuit of third embodiment of the invention, its primary structure is identical with previous embodiment, its difference be in; This charging slot 32 is two battery A1 and A2 series connection; In addition two battery B1 connect with B2, and then parallel with one another, form first group of charge circuit 52 and second group of charge circuit 53 according to this; Each rechargeable battery A1, A2, B1, B2 then are same as previous embodiment, and each parallelly connected switch element SW1-SW4 is respectively equipped with the electronic component D1-D4 of unidirectional conducting between each switch element and each the battery anode; Another difference place is the DC power supply that exchange type power 40 is seen off; Through an electric current assignment control 51; Form the first charging current A and the second charging current B; Deliver to first group and second group of charge circuit 52,53 respectively, make this electric current assignment control 51 export bigger charging current A to the first a group charge circuit 52 respectively by this charging regulation device 42 and carry out extremely speed charging; One less charging current B to the second group charge circuit 53 carries out quick charge; Fill when full Deng the battery A1-A2 of first group of charge circuit 52; Convert second group of charge circuit 53 again to and carry out extremely speed charging, its charging flow is shown in figure 15, forms two phase transition speed change charge modes according to this; Automatically be adjusted into extremely speed charging or quick charge, the conversion of its charging current is shown in figure 16.The characteristics of this embodiment are, earlier will be wherein 2 batteries extremely speed fill fullly, can use earlier if any being badly in need of, 2 then can normally be filled soon in addition, wait previous 2 fill full after, transfer extremely speed charging again to.

Show by above possible embodiments; No matter battery speed change charger of the present invention is multistage (four sections), two sections or the charging of two phase transition speed changes; The power of its exchange type power 40 all maintains the small-power state, but with the detecting number of battery cells charging interval of independent each battery of control, with charging current in transformation automatically or decide under the voltage condition; With the autoconverter mode; Make small-power also can reach extremely the effect of speed even the charging of ultra extremely speed, let exchange type power 40 can reduced volume and in build in the housing 31, realize the purpose that charger 30 of the present invention is convenient for carrying and uses.

The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.

Claims (9)

1. a ni-mh, nickel-cadmium cell series type automatic changing speed charger are used for several batteries to series connection, according to the detecting number of battery cells, carry out the charging of multistage speed change; It is characterized in that, include:
One housing (31), in order to the spare part of ccontaining charging usefulness, the charging slot (32) of a tandem charge circuit is established on the surface, supplies several batteries to insert charging, and picks out a plug (33) that electrically connects with AC power supplies;
One exchange type power (40) is located in the housing (31), in order to this AC power supplies is converted to the DC power supply charging slot (32) is gone up several battery charge of series connection, and provides a reference voltage to charging regulation device (42); The output of exchange type power (40) is connected to two unilateral diodes; One of them unilateral diode (D5) is connected respectively to the impedance (451) and the voltage-adjusting unit (43) of the sense terminal of current sense unit (45), and exchange type power (40) provides above-mentioned reference voltage to charging regulation device (42) through another unilateral diode (D6);
Switch element of the charge circuit separately of several batteries of aforementioned series connection parallel connection is provided with the electronic component of unidirectional conducting between switch element and the battery anode;
One charging regulation device (42), its microcontroller (421) has a time control unit (422) and one number of battery cells/detecting voltage system (423); This time control unit (422) wherein is to control the conducting of each switch element respectively separately or open circuit, and this number of battery cells/detecting voltage system (423) respectively separately to its terminal voltage of battery anode detecting of aforementioned charge circuit, and records the rechargeable battery number;
This microcontroller is control one voltage-adjusting unit (43) and a current adjustment unit (44); Voltage-adjusting unit (43) and current adjustment unit (44) connect respectively to optical coupling switch (46) two ends, and this current adjustment unit (44) connects a current sense unit (45);
Wherein, optical coupling switch (46) is arranged between this exchange type power (40) and current adjustment unit (44) and the voltage-adjusting unit (43);
With detecting number of battery cells decision charging voltage and charging current; And making charging current supply with number of battery cells is inversely proportional to and autoconverter; And the unsteady flow hop count is a number of battery cells, with formation multistage speed change charge mode, and according to the automatic speed that fills the full time of adjusting of number of battery cells.
2. ni-mh according to claim 1, nickel-cadmium cell series type automatic changing speed charger is characterized in that, said charging voltage is according to the automatic transformation of detecting number of battery cells, and are inversely proportional to autoconverter.
3. ni-mh according to claim 1, nickel-cadmium cell series type automatic changing speed charger is characterized in that, said charging voltage is for deciding voltage.
4. ni-mh according to claim 1, nickel-cadmium cell series type automatic changing speed charger is characterized in that, said switch element adopts power-type MOSFET, and the electronic component of unidirectional conducting is selected from diode or MOSFET.
5. ni-mh according to claim 1, nickel-cadmium cell series type automatic changing speed charger is characterized in that, said microcontroller (421) also is connected with an AA/AAA battery selector (47) and a display unit (48); Display unit (48) is located at housing (31) surface, and in order to show charged state, it is that the arbitrary form of LED or LCD constitutes.
6. ni-mh according to claim 1, nickel-cadmium cell series type automatic changing speed charger is characterized in that, said microcontroller (421) periphery also comprises and is connected with the cooling system (50) that a temperature detecting unit (49) and is made up of fan or fin.
7. ni-mh according to claim 1, nickel-cadmium cell series type automatic changing speed charger is characterized in that, the sense terminal of said current sense unit (45) is provided with an impedance (451); The sense terminal of current sense unit (45) and impedance (451) are located at the negative end or the positive end of charge circuit.
8. a ni-mh, nickel-cadmium cell series type automatic changing speed charger are used for several batteries to series connection according to the detecting number of battery cells, carry out two sections speed changes chargings; It is characterized in that, include:
One housing (31), in order to the spare part of ccontaining charging usefulness, its surface is provided with the charging slot (32) of a tandem charge circuit, supplies several batteries to insert charging, and picks out the plug (33) that electrically connects with AC power supplies;
One exchange type power (40) is located in this housing (31), in order to this AC power supplies is converted to the DC power supply charging slot (32) is gone up several battery charge of series connection, and provides a reference voltage to charging regulation device (42); The output of exchange type power (40) is connected to two unilateral diodes; One of them unilateral diode (D5) is connected respectively to the impedance (451) and the voltage-adjusting unit (43) of the sense terminal of current sense unit (45), and exchange type power (40) provides above-mentioned reference voltage to charging regulation device (42) through another unilateral diode (D6);
Switch element of the charge circuit separately of several batteries of aforementioned series connection parallel connection is provided with the electronic component of unidirectional conducting between switch element and the battery anode;
One charging regulation device (42), its microcontroller (421) has a time control unit (422) and one number of battery cells/detecting voltage system (423); Time control unit (422) is controlled the conducting of each switch element respectively separately or is opened circuit, and number of battery cells/detecting voltage system (423) respectively separately to its terminal voltage of battery anode detecting of aforementioned charge circuit, and records the rechargeable battery number;
This microcontroller (421) is a control-voltage-adjusting unit (43) and a current adjustment unit (44); Voltage-adjusting unit (43) and current adjustment unit (44) connect respectively to optical coupling switch (46) two ends, and this electric current adjustment (44) unit connects a current sense unit (45);
Wherein, optical coupling switch (46) is arranged between the output and current adjustment unit (44) and voltage-adjusting unit (43) of this exchange type power (40);
With detecting number of battery cells decision charging voltage and charging current, be in two the time when measuring rechargeable battery, charging voltage descends; Charging current rises; Switch to doubly the speed charging, if two autoconverters then when above switch to and charge normal; Form two sections speed change charge modes in view of the above, adjust automatically according to number of battery cells.
9. a ni-mh, nickel-cadmium cell series type automatic changing speed charger are used for several batteries of carrying out parallel connection again behind the loop to being composed in series in twos, carry out the charging of friction speed; It is characterized in that, include:
One housing (31); Spare part in order to ccontaining charging usefulness; Its surperficial charging slot (32) is first group of constituting parallel with one another again and second group of charge circuit (52,53) after two batteries and two batteries are connected separately; Can supply four batteries to insert charging, and housing pick out the plug (33) that electrically connects with AC power supplies;
Charge circuit separately parallel connection one switch element of the aforementioned battery of each series connection, and between switch element and battery anode, be provided with the electronic component of unidirectional conducting;
-exchange type power (40) is located in this housing (31), in order to this AC power supplies converted to the DC power supply and to provide a reference voltage to charging regulation device (42);
-electric current assignment control (51), first and second charging current of DC power supply formation that this exchange type power (40) is seen off is delivered to first group and second group of charge circuit (52,53) respectively;
-charging regulation device (42), its microcontroller (421) possesses a time control unit (422) and one number of battery cells/detecting voltage system (423); This time control unit (422) wherein is to control the conducting of each switch element respectively separately or open circuit, and this number of battery cells/detecting voltage system (423) respectively separately to its terminal voltage of battery anode detecting of aforementioned charge circuit, and records the rechargeable battery number;
Make this electric current assignment control (51) export bigger charging current to the first a group charge circuit (52) respectively by this charging regulation device (42) and carry out extremely speed charging; And less charging current to the second a group charge circuit (53) carries out quick charge; Fill when full Deng first group of charge circuit (52); Second group of charge circuit (63) converts to a bigger charging current again and carries out extremely the speed charging, forms adjustment automatically between the charge mode of two phase transition conversion rates in view of the above.
CN2005100133127A 2005-04-12 2005-04-12 Nickel-hydrogen and nickel-cadmium cell series type automatic changing speed charger CN1848587B (en)

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CN103762690B (en) * 2014-01-28 2016-08-24 广东欧珀移动通信有限公司 Charging system
CN106200507A (en) * 2016-08-31 2016-12-07 北京和利时智能技术有限公司 The control device of a kind of distributed battery and control method

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