CN206099472U - Novel charge and cut off load operating circuit - Google Patents
Novel charge and cut off load operating circuit Download PDFInfo
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- CN206099472U CN206099472U CN201620557831.3U CN201620557831U CN206099472U CN 206099472 U CN206099472 U CN 206099472U CN 201620557831 U CN201620557831 U CN 201620557831U CN 206099472 U CN206099472 U CN 206099472U
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Abstract
The utility model discloses a novel charge and cut off load operating circuit, include the switching power supply who is connected with municipality ferroelectric phase, rechargeable battery and load, be equipped with unidirectional diode between rechargeable battery and switching power supply's positive pole, it has third resistance to establish ties in the load, the third ohmic connection is on unidirectional diode's negative pole, it charges still to be equipped with cuts off control circuit, charge and cut off control circuit and include first resistance, the vehicle charging control system further comprises a second resistor, the 6th resistance, dab the switch, the 5th resistance, fourth resistance, first electric capacity, a second capacitor, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, first triode, the second triode, MOS pipe and MCU. The utility model has the advantages of simple structure, only receive unidirectional diode's influence for the battery when heavy current charges, MCU can carry out over discharge protection to the battery to improved rechargeable battery's life greatly, the stability in use is good, and the suitability is strong and the practicality is good.
Description
Technical field
This utility model is related to charging load protection circuit technical field, more particularly to a kind of New-type charge cut-out load work
Make circuit.
Background technology
Currently there are some products directly to be powered with battery, when external power source charges to it, load will be certainly
Dynamic shutdown, as shown in Figure 1, when switch is pressed in the output of no Switching Power Supply, the electricity of battery BT1 is through protecting for its common circuit
Dangerous pipe F1, resistance R1 carry out on-line operation to load.
When there is Switching Power Supply to export.No matter whether switch is opened, and makes as slotting two shell fragments for communicating of DC in itself are flicked
Power supply charges to battery BT1 through diode D1, protective tube F1, and load does not form loop and do not work.
This circuit major design is to disconnect cut-out load when DC inserts two identical feet itself to realize charging battery
Work.
The shortcoming of this circuit is can not to realize loading multifunction, can only be used in list functionally, and DC is inserted and passed through in addition
If high current charges the battery, DC is inserted can have certain hidden danger and loss, so the suitability and practicality are to a certain extent
It is restricted.
Utility model content
In order to solve above-mentioned technical problem, main purpose of the present utility model is to provide a kind of simple structure, uses and stablize
Property good and strong applicability New-type charge cut-out loaded work piece circuit.
The utility model proposes a kind of New-type charge cuts off loaded work piece circuit, including the switch electricity being connected with civil power
Source, rechargeable battery and load, between rechargeable battery and the positive pole of Switching Power Supply are provided with unilateral diode, are in series with load
3rd resistor, the 3rd resistor are connected on the negative pole of unilateral diode, are additionally provided with charge cutoff control circuit, the charging
Cutting-off controlling circuit includes first resistor, second resistance, the 6th resistance, touch-switch, the 5th resistance, the 4th resistance, first electric
Appearance, the second electric capacity, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the one or three
Pole pipe, the second audion, metal-oxide-semiconductor and MCU, the emitter stage of first audion are connected on the negative pole of unilateral diode, institute
The colelctor electrode for stating the first audion is connected in the power pins of MCU by the 8th resistance, and the base stage of first audion is led to
Cross the 7th resistance to be connected on the colelctor electrode of the second audion, the grounded emitter of second audion, the two or three pole
The base stage of pipe is connected on the OSCO pins of MCU by the 9th resistance and the base stage of the second audion passes through the tenth resistance eutral grounding,
6th resistance is connected between the emitter stage and base stage of the first audion, and one end of the touch-switch is connected to the one or three
In the base stage of pole pipe, the other end by the 5th resistance eutral grounding, the OSCI pins of MCU by the 4th resistance be connected to the 5th resistance and
On the junction point of touch-switch, first electric capacity is in parallel with the 5th resistance, the source ground of the metal-oxide-semiconductor, drain electrode
It is connected with negative pole, the PWM1 pins of MCU are connected on the grid of metal-oxide-semiconductor by first resistor, and the second resistance is connected to
Between the grid and source electrode of metal-oxide-semiconductor, the other end ground connection of the 11st resistance and the 12nd resistant series and the 12nd resistance,
The other end of the 11st resistance is connected between Switching Power Supply and unilateral diode, and the PWM2 pins of the MCU are connected to the tenth
On the junction point of one resistance and the 12nd resistance, second electric capacity is in parallel with the 12nd resistance.
The model PNP type triode of first audion, second audion are NPN type triode.
The metal-oxide-semiconductor is N-type metal-oxide-semiconductor.
Model EM6060 of the MCU.
Simple structure of the present utility model, high current are only affected by unilateral diode when charging the battery, and MCU can be right
Battery carries out Cross prevention, so as to substantially increase the service life of rechargeable battery, can reduce hidden danger and damage that DC inserts presence
Consumption, stability in use is good, strong applicability and practicality is good.
Description of the drawings
Charge cutoff load circuit schematic diagrams of the Fig. 1 for prior art；
Fig. 2 is embodiment schematic diagram of the present utility model.
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain this utility model
Utility model.
With reference to Fig. 2, an embodiment of the present utility model is proposed, a kind of New-type charge cuts off loaded work piece circuit, including
Switching Power Supply 1, rechargeable battery 2 and the load 3 being connected with civil power, is provided between the positive pole of rechargeable battery 2 and Switching Power Supply 1
Unilateral diode D1, is in series with 3rd resistor R3 in load 3, and 3rd resistor R3 is connected to the negative pole of unilateral diode D1
On, be additionally provided with charge cutoff control circuit 4, the charge cutoff control circuit 4 include first resistor R1, second resistance R2,
Six resistance R5, touch-switch SW1, the 5th resistance R5, the 4th resistance R4, the first electric capacity C1, the second electric capacity C2, the 7th resistance R7,
8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the first audion Q1,
Two audion Q2, metal-oxide-semiconductor Q3 and MCU, the emitter stage of the first audion Q1 are connected on the negative pole of unilateral diode D1, institute
The colelctor electrode for stating the first audion Q1 is connected in the power pins of MCU by the 8th resistance R8, the first audion Q1's
Base stage is connected on the colelctor electrode of the second audion Q2 by the 7th resistance R7, the grounded emitter of the second audion Q2,
The base stage of the second audion Q2 be connected on the OSCO pins of MCU by the 9th resistance R9 and the second audion Q2 base stage
It is grounded by the tenth resistance R10, the 6th resistance R6 is connected between the emitter stage and base stage of the first audion Q1, it is described light
One end of tactile switch SW1 is connected in the base stage of the first audion Q1, the other end is grounded by the 5th resistance R5, the OSCI of MCU
Pin is connected to by the 4th resistance R4 on the junction point of the 5th resistance R5 and touch-switch SW1, the first electric capacity C1 and institute
State the 5th resistance R5 to be in parallel, the source ground of the metal-oxide-semiconductor Q3, drain electrode are connected with negative pole, the PWM1 pins of MCU pass through the
One resistance R1 is connected on the grid of metal-oxide-semiconductor Q3, and second resistance R2 is connected between the grid and source electrode of metal-oxide-semiconductor Q3, institute
State the 11st resistance R11 connect with the 12nd resistance R12 and the 12nd resistance R12 other end ground connection, the 11st resistance R11
The other end is connected between Switching Power Supply 1 and unilateral diode D1, and the PWM2 pins of the MCU are connected to the 11st resistance R11
On the junction point of the 12nd resistance R12, the second electric capacity C2 and the 12nd resistance R12 is in parallel.
The model PNP type triode of first audion, second audion are NPN type triode.
The metal-oxide-semiconductor is N-type metal-oxide-semiconductor.
Model EM6060 of the MCU.
Its operation principle is summarized as follows：In the case where no Switching Power Supply is exported and presses touch-switch SW1, battery
Electricity makes Key obtain high level signal, another road signal Jing of battery through resistance R4 after protective tube F1, resistance R6, R5 partial pressure
Cross audion Q1 emitter stages, resistance R5 makes audion Q1 produce base current and temporarily turn on flowing back into, under such circumstances,
MCU EM6060 will start working moment, as MCU internal processes arrange the short fast of signal recognition time, obtain MCU
Power supply signal to work is all the time than detecting Key signals one step ahead.MCU detects that Key is high level and P10 feet are low levels
When and make MCU P14 feet export high level signal, high level signal through resistance R9, R10 make transistor base produce electric current lead
It is logical, thus directly make the electricity of battery through audion Q1, resistance R7 flow back to causing the fully on guarantee MCU of audion Q1
There is stable voltage power supply always.
Touch key SW1 press which time when, MCU can carry out record identification signal come open PWM1, PWM2 output height
Low level, thus can be used to control diversification and the multifunction of load.
In the case where there is Switching Power Supply to export, power supply is filled to battery BT1 through diode D1, protective tube F1 all the way
Electricity, the power supply signal A1 on another road are given to MCU through the partial pressure of resistance R11, R12, then when touch-switch SW1 is pressed, by upper
It is that MCU is operated to state described audion Q1 and can turn in nanosecond, but as Key is high level signal and MCU P10
Foot detects Switching Power Supply output high level signal to make P14 feet export low level, under such circumstances, at audion Q2, Q1
In cut-off state, MCU will cannot get stable voltage power supply, when just occurring that connecting Switching Power Supply charges the battery, load
Work can be automatically cut off.
This circuit advantage is essentially consisted in：Only affected by diode D1 when high current charges the battery；Can be to electricity inside MCU
Pond arranges Cross prevention；MCU has two PW signal outputs, can control two loads；Touch-switch it is short by and it is long by by
MCU recognition times carry out the control that difference in functionality change is carried out to load.
Simple structure of the present utility model, high current are only affected by unilateral diode when charging the battery, and MCU can be right
Battery carries out Cross prevention, so as to substantially increase the service life of rechargeable battery, can reduce hidden danger and damage that DC inserts presence
Consumption, stability in use is good, strong applicability and practicality is good.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
The equivalent structure transformation made by every utilization this utility model description and accompanying drawing content, or directly or indirectly it is used in other phases
The technical field of pass, is included in scope of patent protection of the present utility model in the same manner.
Claims (4)
1. a kind of New-type charge cuts off loaded work piece circuit, including the Switching Power Supply, rechargeable battery and load that are connected with civil power,
Unilateral diode is provided between rechargeable battery and the positive pole of Switching Power Supply, 3rd resistor is in series with load, the described 3rd
Resistance is connected on the negative pole of unilateral diode, it is characterised in that：It is additionally provided with charge cutoff control circuit, the charge cutoff control
Circuit processed include first resistor, second resistance, the 6th resistance, touch-switch, the 5th resistance, the 4th resistance, the first electric capacity, second
Electric capacity, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the first audion,
Two audions, metal-oxide-semiconductor and MCU, the emitter stage of first audion are connected on the negative pole of unilateral diode, and the described 1st
The colelctor electrode of pole pipe is connected in the power pins of MCU by the 8th resistance, and the base stage of first audion is electric by the 7th
Resistance is connected on the colelctor electrode of the second audion, the grounded emitter of second audion, the base stage of second audion
Be connected on the OSCO pins of MCU by the 9th resistance and the second audion base stage by the tenth resistance eutral grounding, the described 6th
Resistance is connected between the emitter stage and base stage of the first audion, and one end of the touch-switch is connected to the base of the first audion
Extremely go up, the other end passes through the 5th resistance eutral grounding, the OSCI pins of MCU are connected to the 5th resistance and touch-switch by the 4th resistance
Junction point on, first electric capacity is in parallel with the 5th resistance, the source ground of the metal-oxide-semiconductor, drain electrode and negative pole phase
Connection, the PWM1 pins of MCU are connected on the grid of metal-oxide-semiconductor by first resistor, and the second resistance is connected to the grid of metal-oxide-semiconductor
Between pole and source electrode, the 11st resistance is with the 12nd resistant series and the other end ground connection of the 12nd resistance, the 11st electric
The other end of resistance is connected between Switching Power Supply and unilateral diode, the PWM2 pins of the MCU be connected to the 11st resistance with
On the junction point of the 12nd resistance, second electric capacity is in parallel with the 12nd resistance.
2. New-type charge according to claim 1 cuts off loaded work piece circuit, it is characterised in that：First audion
Model PNP type triode, second audion are NPN type triode.
3. New-type charge according to claim 2 cuts off loaded work piece circuit, it is characterised in that：The metal-oxide-semiconductor is N-type
Metal-oxide-semiconductor.
4. New-type charge according to claim 3 cuts off loaded work piece circuit, it is characterised in that：The model of the MCU
EM6060。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557831.3U CN206099472U (en) | 2016-06-12 | 2016-06-12 | Novel charge and cut off load operating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557831.3U CN206099472U (en) | 2016-06-12 | 2016-06-12 | Novel charge and cut off load operating circuit |
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| CN206099472U true CN206099472U (en) | 2017-04-12 |
Family
ID=58471792
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620557831.3U Active CN206099472U (en) | 2016-06-12 | 2016-06-12 | Novel charge and cut off load operating circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391162A (en) * | 2017-08-04 | 2019-02-26 | 广东金莱特电器股份有限公司 | Low-power consumption AC-DC conversion switch circuit |
-
2016
- 2016-06-12 CN CN201620557831.3U patent/CN206099472U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391162A (en) * | 2017-08-04 | 2019-02-26 | 广东金莱特电器股份有限公司 | Low-power consumption AC-DC conversion switch circuit |
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