CN201054508Y - Battery charger - Google Patents
Battery charger Download PDFInfo
- Publication number
- CN201054508Y CN201054508Y CNU2007201208002U CN200720120800U CN201054508Y CN 201054508 Y CN201054508 Y CN 201054508Y CN U2007201208002 U CNU2007201208002 U CN U2007201208002U CN 200720120800 U CN200720120800 U CN 200720120800U CN 201054508 Y CN201054508 Y CN 201054508Y
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- battery
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- controlled source
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a charger for battery which can automatically recognize a polarity of the battery. The utility model comprises a state and polarity recognizing cell (200), a controller(300) and a charge driving cell(100), wherein, the state and polarity recognizing cell(200) automatically recognizes the idle load, the short circuit, the over-current, the front connection of the battery and the reverse connection of the battery, detects the voltage state of the battery and generates a corresponding state signal; the controller(300) controls the opening and closing of the charge driving cell(100) according to the state signal, thereby choosing a correct charge loop and a charge current so as to achieve the charge function for the reverse connection of the battery. The circuit is integrated into a chip, thereby greatly reducing the cost of the circuit.
Description
Technical field
The utility model relates to a kind of battery charger.
Background technology
Existing charger is flooded with charger miscellaneous in the market, wherein the part charger does not possess the contrary chargeable function that connects, promptly can not charge inverse time, need manually or utilize other devices to adjust battery polar to charge normal function to finish to battery when battery polar connects; Though and the part charger has that battery is contrary to connect chargeable function, its circuit is barricaded as by discrete device, and shared pcb board area is bigger, and the requirement meeting that accurately detects cell voltage further increases circuit cost.In view of this, the utility model proposes and a kind ofly can discern automatically that battery polar and battery are contrary to be connect chargeable battery charger and this circuit is integrated in the chip, when realizing that battery is contrary and connecing chargeable function, greatly reduce circuit cost.
Summary of the invention
The purpose of this utility model provides a kind ofly can discern automatically that battery polar and battery are contrary to connect chargeable battery charger, and Fig. 1 is a rough schematic of the present utility model.This battery charger comprises state/polarity identification unit (200), controller (300) and charging driver element (100).Wherein, state/polarity identification unit (200) are in order to identification charger zero load, short circuit, overcurrent, battery is just connecing and battery is contrary connects situation and detect the cell voltage state, produces corresponding status signal; Controller (300), be electrically connected on this state/polarity identification unit (200), in order to responding the status signal of this state/polarity identification unit (200), and produce the action of control signal, be full of the back at battery simultaneously and cut off charge circuit with control charging driver element (100); Charging driver element (100) is electrically connected on controller (300), is used for the output control signal of response controller (300), and correct charge circuit and charging current is provided under battery charging state.This charger adopts the semiconductor technology manufacturing, is integrated in the same chip.
This charging driver element (100) comprising: controlled source 1 (110), it has first input/output terminal, second input/output terminal and controlled end, the first input and output termination node A of this controlled source 1 (110) wherein, first group of output of controlled termination controller (300); Controlled source 2 (120), it has first input/output terminal, second input/output terminal and controlled end, wherein the second input/output terminal lotus root of this controlled source 2 (120) connects second input/output terminal of controlled source 1 (110) in nodes X, the first input and output termination Node B of controlled source 2 (120), second group of output of controlled termination controller (300); Controlled source 3 (130), it has first input/output terminal, second input/output terminal and controlled end, the first input and output termination node C of this controlled source 3 (130) wherein, the 3rd group of output of controlled termination controller (300); Controlled source 4 (140), it has first input/output terminal, second input/output terminal and controlled end, wherein the second input/output terminal lotus root of this controlled source 4 (140) connects second input/output terminal of controlled source 3 (130) in node Y, the first input and output termination node D of controlled source 4 (140), the 4th group of output of controlled termination controller (300); Node A and node C are directly connected to power supply or are connected to power supply by circuit unit, and Node B and node D are directly connected to ground or are connected to ground by circuit unit.Controlled source 1 (110), controlled source 2 (120), controlled source 3 (130) and controlled source 4 (140) are the control switch devices, and its conducting is controlled with turn-offing controlled device (300) output, provides correct charge circuit and charging current for circuit under charged state.And charge circuit comprises: 1. power supply--(...)--node A---controlled source 1---anode--battery cathode---controlled source 4---node D---(...)---ground; 2. power supply--(...)--node C---controlled source 3---anode--battery cathode--controlled source 2---Node B--(...)---ground.This control switch device can be the combination of field-effect transistor (FET), bipolar transistor (BJT), insulated gate bipolar transistor (IGBT), thyristor (Thyristor) or above-mentioned device.
In the utility model preferred embodiment, above-mentioned controlled source 1 uses a P channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode meets node A, and drain electrode connects nodes X, and grid connects first group of output of controller; Controlled source 2 uses a N-channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode connects Node B, and drain electrode connects nodes X, and grid connects second group of output of controller; Controlled source 3 uses a P channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode meets node C, and drain electrode meets node Y, and grid connects the 3rd group of output of controller; Controlled source 4 uses a N-channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode meets node D, and drain electrode meets node Y, and grid connects the 4th group of output of controller, and node A and node C connect power supply, Node B and node D ground connection.
And in another preferred embodiment of the utility model, above-mentioned controlled source 1 uses a bipolarity PNP transistor, and wherein this transistor has emitter, collector and base stage, and emitter meets node A, and collector connects nodes X, and base stage connects first group of output of controller; Controlled source 2 uses a bipolarity NPN transistor, and wherein this transistor has emitter, collector and base stage, and emitter connects Node B, and collector connects nodes X, and base stage connects second group of output of controller; Controlled source 3 uses a bipolarity PNP transistor, and wherein this transistor has emitter, collector and base stage, and emitter meets node C, and collector meets node Y, and base stage connects the 3rd group of output of controller; Controlled source 4 uses a bipolarity NPN transistor, and wherein this transistor has emitter, collector and base stage, and emitter meets node D, and collector meets node Y, and base stage connects the 4th group of output of controller, and node A and node C connect power supply, Node B and node D ground connection.
In the another preferred embodiment of the utility model, above-mentioned controlled source 1 uses a P channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode meets node A, and drain electrode connects nodes X, and grid is by line R connected node Y; Controlled source 2 uses a N-channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode connects Node B, and drain electrode connects nodes X, and grid is by line R connected node Y; Controlled source 3 uses a P channel MOS transistor, and wherein this transistor has source electrode, drain electrode and grid, and source electrode meets node C, and drain electrode meets node Y, and grid is by line Q connected node X; Controlled source 4 uses a N-channel MOS transistor, wherein this transistor has source electrode, drain electrode and grid, source electrode meets node D, drain electrode meets node Y, and grid is by line Q connected node X, Node B and node D ground connection, one P channel MOS transistor is as the part of controller, this transistor has source electrode, drain electrode and grid, and source electrode connects power supply, and drain electrode couples node A and node C.
In sum, the beneficial effects of the utility model are, this charger circuit can be discerned charger zero load, short circuit, overcurrent, battery automatically and just connect and contrary situation and the detection cell voltage state of connecing of battery, and provide correct charge circuit and charging current, promptly no matter battery just connects, can realize charge function against connecing all, controlled source can be selected different control switch devices or its combination, and circuit is integrated in the same chip, significantly reduce components and parts number and pcb board area, thereby saved circuit cost.
For further understanding feature of the present utility model and technology contents, below in conjunction with accompanying drawing the utility model is elaborated, but listed accompanying drawing is only for referencial use and the usefulness of explanation, and is not that scope of the present utility model is limited.
Description of drawings
Fig. 1 rough schematic of the present utility model
The rough schematic of the preferred embodiment of Fig. 2 A the utility model
The rough schematic of another preferred embodiment of Fig. 2 B the utility model
The rough schematic of the another preferred embodiment of Fig. 2 C the utility model
Embodiment
Known battery charger, major part needs under the situation manually or utilizes other devices to adjust battery polars to charge normal function to finish contrary the connecing of battery, though other has the part charger to have battery against connecing chargeable function, but all adopt discrete device to be barricaded as, shared pcb board area is bigger, detects voltage accurately and can further improve circuit cost.In view of this, the utility model proposes a kind of battery of battery polar of can discerning automatically against connecing chargeable battery charger.
Shown in Fig. 2 A, this figure is the rough schematic of the utility model preferred embodiment.Adopt the MOS field-effect transistor as controlled source in this example, wherein first field-effect transistor (110) is the P channel MOS transistor, it has source electrode (113), drain electrode (117) and grid (115), wherein source electrode (113) connects power supply, drain electrode (117) connects nodes X, and grid (115) connects first output of controller (300); Second field-effect transistor (120) is the N-channel MOS transistor, it has source electrode (123), drain electrode (127) and grid (125), source electrode (123) ground connection wherein, the drain electrode (117) that drain electrode (127) lotus root connects first field-effect transistor (110) is in nodes X, and grid (125) connects second output of controller (300); The 3rd field-effect transistor (130) is the P channel MOS transistor, and it has source electrode (133), drain electrode (137) and grid (135), and wherein source electrode (133) connects power supply, and drain electrode (137) meets node Y, and grid (135) connects the 3rd output of controller (300); The 4th field-effect transistor (140) is the N-channel MOS transistor, it has source electrode (143), drain electrode (147) and grid (145), source electrode (143) ground connection wherein, the drain electrode (137) that drain electrode (147) lotus root connects the 3rd field-effect transistor is in node Y, and grid (145) connects the 4th output of controller (300).In the utility model preferred embodiment, state/polarity identification unit (200) will be discerned charger zero load, short circuit, overcurrent, battery automatically and just connect and contrary situation and the detection cell voltage state of connecing of battery, produce the input of corresponding status signal to controller (300).Charger connects battery and battery unsaturation: when the battery-end of connected node X is an anode, when the battery-end of connected node Y is battery cathode, first field-effect transistor (110) is opened with the 4th field-effect transistor (140), second field-effect transistor (120) turn-offs with the 3rd field-effect transistor (130), and this moment, the battery charge loop was: power vd D---first field-effect transistor (110)--anode--battery cathode--the 4th field-effect transistor (140)---ground; When the battery-end of connected node X is a battery cathode, when the battery-end of connected node Y is anode, second field-effect transistor (120) is opened with the 3rd field-effect transistor (130), first field-effect transistor (110) turn-offs with the 4th field-effect transistor (140), and this moment, the battery charge loop was: power vd D---the 3rd field-effect transistor (130)--anode--battery cathode--second field-effect transistor (120)---ground.Charger connects battery and battery is saturated: the switch motion of four MOS transistor of controller (300) control, cut off the battery charge loop, to prevent battery overcharge.Can utilize the wire jumper (Metal Option) in the integrated circuit layout to adjust the size of MOS transistor in addition to obtain needed charging current value.
Shown in Fig. 2 B, this figure is another preferred embodiment rough schematic of the present utility model.Compare with Fig. 2 A, this preferred embodiment replaces the MOS field-effect transistor with bipolar transistor, be that controlled source 1 and controlled source 3 all adopt PNP transistor, controlled source 2 and controlled source 4 all to adopt NPN transistor, can finish same circuit function by different process choice.
Shown in Fig. 2 C, this figure is an another preferred embodiment rough schematic of the present utility model.Compare with Fig. 2 A, this preferred embodiment equally with the MOS field-effect transistor as controlled source, be that controlled source 1 and controlled source 3 all adopt the P channel MOS transistor, controlled source 2 and controlled source 4 all adopt the N-channel MOS transistor, gate coupled second field effect transistor gate of first field-effect transistor and be connected to node Y just by line R, gate coupled the 4th field effect transistor gate of the 3rd field-effect transistor also is connected to nodes X by line Q, increased by one the 5th field-effect transistor (150), this transistor is the P channel MOS transistor, has source electrode (153), drain electrode (155) and grid (157), wherein source electrode (153) connects power supply, and drain electrode (157) couples the source electrode (113) of first field-effect transistor and the source electrode (133) of the 3rd field-effect transistor.On function, the 5th field-effect transistor, line Q and line R belong to state/polarity identification unit and controller category, present embodiment is connected the purpose that has realized automatic adjustment charge circuit by line Q with ball bearing made using such as line R, has simplified circuit structure.
More than be preferred embodiment of the present utility model, the utility model can also select other control switch devices and combination to be used as the driver element that charges, and enumerates no longer one by one at this.
By preceding, the battery charger that can discern battery polar automatically of the present utility model, its advantage is:
1. can discern battery polar automatically, realize that battery is against connecing chargeable function;
2. this circuit is integrated in the chip, has reduced components and parts number and pcb board area greatly, saved circuit cost.
In sum; preferred embodiment of the present utility model as mentioned above; but be not in order to limit scope of the present utility model; protection range of the present utility model should be as the criterion so that claim is described; the utility model can be changed and be retrofited by those of ordinary skills, but ought still belong in the creation spirit and claims restricted portion of the utility model.
Claims (6)
1. can discern automatically that battery polar and battery are contrary to connect chargeable battery charger for one kind, it is characterized in that, comprise:
State/polarity identification unit (200) are in order to identification charger zero load, short circuit, overcurrent, battery is just connecing and battery is contrary connects situation and detect the cell voltage state, produces corresponding status signal;
Controller (300), be electrically connected on this state/polarity identification unit (200), in order to responding the status signal of this state/polarity identification unit (200), and produce the action of control signal, be full of the back at battery simultaneously and cut off charge circuit with control charging driver element (100);
Charging driver element (100) is electrically connected on controller (300), is used for the output control signal of response controller (300), and correct charge circuit and charging current is provided under battery charging state.It comprises:
1. controlled source 1 (110), and it has first input/output terminal, second input/output terminal and controlled end, the first input and output termination node A of this controlled source 1 (110) wherein, first group of output of controlled termination controller (300);
2. controlled source 2 (120), it has first input/output terminal, second input/output terminal and controlled end, wherein the second input/output terminal lotus root of this controlled source 2 (120) connects second input/output terminal of controlled source 1 (110) in nodes X, the first input and output termination Node B of controlled source 2 (120), second group of output of controlled termination controller (300);
3. controlled source 3 (130), and it has first input/output terminal, second input/output terminal and controlled end, the first input and output termination node C of this controlled source 3 (130) wherein, the 3rd group of output of controlled termination controller (300);
4. controlled source 4 (140), it has first input/output terminal, second input/output terminal and controlled end, wherein the second input/output terminal lotus root of this controlled source 4 (140) connects second input/output terminal of controlled source 3 (130) in node Y, the first input and output termination node D of controlled source 4 (140), the 4th group of output of controlled termination controller (300);
2. as claimed in claim 1ly can discern automatically that battery polar and battery are contrary to connect chargeable battery charger, it is characterized in that this charger adopts semiconductor technology manufacturing, is integrated in the same chip.
3. as claimed in claim 1ly can discern automatically that battery polar and battery are contrary to connect chargeable battery charger, it is characterized in that, node A and node C are directly connected to power supply or are connected to power supply by circuit unit, and Node B and node D are directly connected to ground or are connected to ground by circuit unit.
4. as claimed in claim 1ly can discern automatically that battery polar and battery are contrary to connect chargeable battery charger, it is characterized in that, this controlled source 1 (110), controlled source 2 (120), controlled source 3 (130) and controlled source 4 (140) are the control switch devices, its conducting is controlled with turn-offing controlled device (300) output, provides correct charge circuit and charging current for circuit under charged state.
5. as claimed in claim 4ly can discern automatically that battery polar and battery are contrary to connect chargeable battery charger, it is characterized in that this charge circuit comprises:
1. power supply--(...)--node A---controlled source 1---anode--battery cathode---controlled source 4---node D---(...)---ground; And
2. power supply--(...)--node C---controlled source 3---anode--battery cathode--controlled source 2---Node B--(...)---ground.
6. as claimed in claim 4ly can discern automatically that battery polar and battery are contrary to connect chargeable battery charger, it is characterized in that:
This control switch device can be the combination of field-effect transistor (FET), bipolar transistor (BJT), insulated gate bipolar transistor (IGBT), thyristor (Thyristor) or above-mentioned device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201208002U CN201054508Y (en) | 2007-06-21 | 2007-06-21 | Battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201208002U CN201054508Y (en) | 2007-06-21 | 2007-06-21 | Battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201054508Y true CN201054508Y (en) | 2008-04-30 |
Family
ID=39394166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201208002U Expired - Fee Related CN201054508Y (en) | 2007-06-21 | 2007-06-21 | Battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201054508Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572433B (en) * | 2009-03-06 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN101409454B (en) * | 2008-07-30 | 2012-02-01 | 李少华 | charging circuit capable of automatically identifying polarity |
| CN101593996B (en) * | 2009-03-31 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN101572430B (en) * | 2009-03-06 | 2012-02-08 | 李少华 | Novel charging circuit for automatically recognizing polarity |
| CN102364809A (en) * | 2011-09-29 | 2012-02-29 | 郭锋 | Random battery polarity access charger circuit |
-
2007
- 2007-06-21 CN CNU2007201208002U patent/CN201054508Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409454B (en) * | 2008-07-30 | 2012-02-01 | 李少华 | charging circuit capable of automatically identifying polarity |
| CN101572433B (en) * | 2009-03-06 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN101572430B (en) * | 2009-03-06 | 2012-02-08 | 李少华 | Novel charging circuit for automatically recognizing polarity |
| CN101593996B (en) * | 2009-03-31 | 2012-02-01 | 李少华 | Charging circuit capable of automatically recognizing polarity |
| CN102364809A (en) * | 2011-09-29 | 2012-02-29 | 郭锋 | Random battery polarity access charger circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Ruibiao Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20090721 |