CN107508342A - A kind of lithium battery MCU power supply protection circuits - Google Patents
A kind of lithium battery MCU power supply protection circuits Download PDFInfo
- Publication number
- CN107508342A CN107508342A CN201710690992.9A CN201710690992A CN107508342A CN 107508342 A CN107508342 A CN 107508342A CN 201710690992 A CN201710690992 A CN 201710690992A CN 107508342 A CN107508342 A CN 107508342A
- Authority
- CN
- China
- Prior art keywords
- diode
- resistance
- poles
- triode
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 26
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000004065 semiconductor Substances 0.000 claims abstract description 30
- 230000004913 activation Effects 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 17
- 150000002641 lithium Chemical class 0.000 abstract description 2
- 230000005059 dormancy Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H02J2007/0067—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention is a kind of lithium battery MCU power supply protection circuits, it is characterised in that includes MCU including active module, charging isolation module, power module, self-locking module and control module, the control module；The active module includes activation switch K1, diode D6, diode D5, diode D3, metal-oxide-semiconductor Q1, resistance R5, resistance R3 and electric capacity C1, activation switch K1, the diode D6, the resistance R5, the diode D5 and the electric capacity C1 are serially connected the rear S poles with the metal-oxide-semiconductor Q1 and are connected, and the electric capacity C1 other ends connect with the G poles of the metal-oxide-semiconductor Q1, the diode D3 and the resistance R3 are connected in parallel on the electric capacity C1 both ends；This lithium battery MCU power supply protection circuits are reasonable in design, very small from power consumption, and will not directly affect Consumer's Experience and lithium battery uses cycle life.
Description
Technical field
The present invention relates to battery protection field, especially a kind of lithium battery MCU power supply protection circuits.
Background technology
As lithium ion battery applications field is more and more extensive, product function requires more and more, such as electric tool, dust suction
Device etc., higher requirement there has also been to lithium ion battery protection scheme design complexities；Lithium battery main flow protection scheme has at present
Dedicated hardware chip protection scheme, also there are software MCU protection schemes；Software MCU protection scheme advantages are that Functional Design is flexible, but
It is all bigger from power consumption；, will be direct if MCU protection schemes are larger from power consumption because electric quantity of lithium battery is relatively limited
Influence Consumer's Experience and lithium battery uses cycle life.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of lithium battery MCU power supply protection circuits, this lithium battery
MCU power supply protection circuits are reasonable in design, very small from power consumption, and will not directly affect Consumer's Experience and lithium battery and use circulation
Life-span.
Technical scheme is as follows：
A kind of lithium battery MCU power supply protection circuits, including active module, charging isolation module, power module, self-locking module and control
Molding block, the control module include MCU；The active module includes activation switch K1, diode D6, diode D5, two poles
Pipe D3, metal-oxide-semiconductor Q1, resistance R5, resistance R3 and electric capacity C1, the activation switch K1, the diode D6, the resistance R5, institute
State the diode D5 and electric capacity C1 and be serially connected the rear S poles with the metal-oxide-semiconductor Q1 and be connected, and the electric capacity C1 other ends and institute
Metal-oxide-semiconductor Q1 G poles connection is stated, the diode D3 and the resistance R3 are connected in parallel on the electric capacity C1 both ends；The charging isolation
Module includes charger C+, diode D2 and diode D1, and the diode D2 connects with the D poles of the metal-oxide-semiconductor Q1, and described two
Pole pipe D1 connects with the charger C+, and the diode D2 is connected with the negative pole of the diode D1；The power module bag
Power supply U1, triode Q2, resistance R1, resistance R2 and diode D4 are included, described resistance R1 one end connects the negative of the diode D2
Pole, the resistance R1 other ends connect the C poles of the triode Q2, and the both ends of the resistance R2 connect the triode Q2 respectively
C poles and the triode Q2 B poles, described diode D4 one end connects the B poles of the triode Q2, the diode D4's
The other end is grounded, and the E poles of the triode Q2 connect the input of the power supply U1；The self-locking module includes resistance R4, electricity
R6, resistance R7 and triode Q3, the triode Q3 E poles ground connection are hindered, the both ends of the resistance R6 connect the triode Q3
E poles and the triode Q3 B poles, the both ends of the resistance R4 connect the C poles of the triode Q3 and the metal-oxide-semiconductor respectively
Q1 G poles, the resistance R6 both ends connect the B poles of the triode Q3 and the MCU respectively.
After K1 is pressed, metal-oxide-semiconductor Q1 is set to produce VGS cut-in voltages；Q1 is turned on；By diode D2, resistance R1, three poles
Pipe Q2 powers to voltage-stabilized power supply U1, produces VCC voltages and is powered to MCU, MCU work；MCU provides by resistance R6 to triode Q3
Base bias voltage, Q3 conductings, PMOS Q1 constant conductions, latching circuit is formed, it is reasonable in design simple.When unclamping K1, K1 is light
Touch and reset；The latching circuit constant conduction that metal-oxide-semiconductor Q1 is made up of triode Q3, MCU.When MCU checks dormancy condition,
MCU stops providing base bias voltage, triode Q3 cut-offs, metal-oxide-semiconductor Q1 cut-offs, triode Q2 cut-offs, voltage stabilizing to triode Q3
Power supply U1 is stopped, VCC power down；MCU enters Low-power-consumptiodormancy dormancy state, very power saving.
Preferably, the input of the power supply U1 is provided with filter capacitor C2 and filter capacitor C3.
Preferably, the output end of the power supply U1 is provided with filter capacitor C4 and filter capacitor C5.
Preferably, the MCU is provided with filter capacitor C6 and filter capacitor C7.
Preferably, the metal-oxide-semiconductor Q1 is PMOS or PNP triodes.
Preferably, the triode Q2 is PMOS or PNP triodes.
Using having the beneficial effect that for above technical scheme：
1. a lithium battery MCU power supply protection circuit is reasonable in design, very small from power consumption, and will not directly affect Consumer's Experience
And lithium battery uses cycle life..
2. a lithium battery MCU power supply protection circuit, after K1 is pressed, metal-oxide-semiconductor Q1 is set to produce VGS cut-in voltages；Q1 is led
It is logical；Powered by diode D2, resistance R1, triode Q2 to voltage-stabilized power supply U1, produce VCC voltages and powered to MCU, MCU work；
MCU provides base bias voltage by resistance R6 to triode Q3, Q3 conductings, PMOS Q1 constant conductions, forms latching circuit,
It is reasonable in design simple.
3. a lithium battery MCU power supply protection circuit, when unclamping K1, K1 touches reset；Metal-oxide-semiconductor Q1 by triode Q3,
The latching circuit constant conduction of MCU compositions.
4. a lithium battery MCU power supply protection circuit, when MCU checks dormancy condition, MCU stops carrying to triode Q3
It is stopped for base bias voltage, triode Q3 cut-offs, metal-oxide-semiconductor Q1 cut-offs, triode Q2 cut-offs, voltage-stabilized power supply U1, VCC falls
Electricity；MCU enters Low-power-consumptiodormancy dormancy state, very power saving.
Brief description of the drawings
Fig. 1 is the circuit diagram of lithium battery MCU power supply protection circuits of the present invention.
Embodiment
For the ease of it will be appreciated by those skilled in the art that being carried out below in conjunction with accompanying drawing and embodiment to the present invention further
It is described in detail.
Embodiment one
As shown in drawings, a kind of lithium battery MCU power supply protection circuits, including active module, charging isolation module, power module,
Self-locking module and control module, the control module include MCU.
Active module includes activation switch K1, diode D6, diode D5, diode D3, metal-oxide-semiconductor Q1, resistance R5, resistance
R3 and electric capacity C1, activation switch K1, diode D6, resistance R5, diode D5 and electric capacity C1 are serially connected the S with metal-oxide-semiconductor Q1 afterwards
Pole connects, and the electric capacity C1 other ends connect with metal-oxide-semiconductor Q1 G poles, and diode D3 and resistance R3 are connected in parallel on electric capacity C1 both ends；
Charging isolation module includes charger C+, diode D2 and diode D1, and diode D2 connects with metal-oxide-semiconductor Q1 D poles, and two
Pole pipe D1 connects with charger C+, and diode D2 is connected with diode D1 negative pole.
Power module includes power supply U1, triode Q2, resistance R1, resistance R2 and diode D4, resistance R1 one end connection two
Pole pipe D2 negative pole, resistance R1 other ends connection triode Q2 C poles, resistance R2 both ends connect triode Q2 C poles respectively
With triode Q2 B poles, diode D4 one end connection triode Q2 B poles, the diode D4 other end is grounded, triode Q2's
E poles connection power supply U1 input.
Self-locking module includes resistance R4, resistance R6, resistance R7 and triode Q3, and triode Q3 E poles are grounded, resistance R6's
Both ends connection triode Q3 E poles and triode Q3 B poles, resistance R4 both ends connect triode Q3 C poles and metal-oxide-semiconductor respectively
Q1 G poles, resistance R6 both ends connect triode Q3 B poles and MCU respectively.
Specifically, power supply U1 input is provided with filter capacitor C2 and filter capacitor C3, power supply U1 output end is provided with filter
Ripple electric capacity C4 and filter capacitor C5.
Specifically, MCU is provided with filter capacitor C6 and filter capacitor C7.
Specifically, metal-oxide-semiconductor Q1 but the switching transistor of other forms is not limited to, such as PMOS, PNP triodes.This reality
Apply the PMOS of example use.
Specifically, triode Q2 but the switching transistor of other forms is not limited to, such as PMOS, PNP triodes.This reality
Apply that example uses for PNP triodes.
As described in Figure 1, after K1 is pressed, metal-oxide-semiconductor Q1 is made to produce VGS cut-in voltages；Q1 is turned on；By diode D2, electricity
Hinder R1, triode Q2 to power to voltage-stabilized power supply U1, produce VCC voltages and powered to MCU, MCU work；MCU gives three by resistance R6
Level pipe Q3 provides base bias voltage, Q3 conductings, PMOS Q1 constant conductions, forms latching circuit, reasonable in design simple.Work as pine
K1 is opened, K1 touches reset；The latching circuit constant conduction that metal-oxide-semiconductor Q1 is made up of triode Q3, MCU.When MCU is checked not
During dormancy condition, MCU stops providing base bias voltage, triode Q3 cut-offs, metal-oxide-semiconductor Q1 cut-offs, triode Q2 to triode Q3
Cut-off, voltage-stabilized power supply U1 are stopped, VCC power down；MCU enters Low-power-consumptiodormancy dormancy state, very power saving.
Above is with reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Claims (6)
1. a kind of lithium battery MCU power supply protection circuits, it is characterised in that including active module, charging isolation module, power supply mould
Block, self-locking module and control module,
The control module includes MCU；
The active module includes activation switch K1, diode D6, diode D5, diode D3, metal-oxide-semiconductor Q1, resistance R5, resistance
R3 and electric capacity C1, activation switch K1, the diode D6, the resistance R5, the diode D5 and the electric capacity C1 phases
Mutually it is connected after series connection with the S poles of the metal-oxide-semiconductor Q1, and the electric capacity C1 other ends connect with the G poles of the metal-oxide-semiconductor Q1, it is described
Diode D3 and the resistance R3 are connected in parallel on the electric capacity C1 both ends；
The charging isolation module includes charger C+, diode D2 and diode D1, the diode D2 and the metal-oxide-semiconductor Q1
The connection of D poles, the diode D1 connects with the charger C+, the diode D2 and the diode D1 negative pole phase
Even；
The power module includes power supply U1, triode Q2, resistance R1, resistance R2 and diode D4, described resistance R1 one end and connected
The negative pole of the diode D2 is connect, the resistance R1 other ends connect the C poles of the triode Q2, the both ends point of the resistance R2
The C poles of the triode Q2 and the B poles of the triode Q2 are not connected, and described diode D4 one end connects the triode Q2's
B poles, the other end ground connection of the diode D4, the E poles of the triode Q2 connect the input of the power supply U1；
The self-locking module includes resistance R4, resistance R6, resistance R7 and triode Q3, the triode Q3 E poles ground connection, described
Resistance R6 both ends connect the E poles of the triode Q3 and the B poles of the triode Q3, and the both ends of the resistance R4 connect respectively
The C poles of the triode Q3 and the G poles of the metal-oxide-semiconductor Q1, the resistance R6 both ends connect respectively the triode Q3 B poles and
The MCU.
2. lithium battery MCU power supply protection circuits according to claim 1, it is characterised in that the input of the power supply U1
Provided with filter capacitor C2 and filter capacitor C3.
3. lithium battery MCU power supply protection circuits according to claim 2, it is characterised in that the output end of the power supply U1
Provided with filter capacitor C4 and filter capacitor C5.
4. the lithium battery MCU power supply protection circuits according to claim any one of 1-3, it is characterised in that set on the MCU
There are filter capacitor C6 and filter capacitor C7.
5. lithium battery MCU power supply protection circuits according to claim 4, it is characterised in that the metal-oxide-semiconductor Q1 is PMOS
Or PNP triodes.
6. lithium battery MCU power supply protection circuits according to claim 5, it is characterised in that the triode Q2 is PMOS
Pipe or PNP triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690992.9A CN107508342A (en) | 2017-08-14 | 2017-08-14 | A kind of lithium battery MCU power supply protection circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690992.9A CN107508342A (en) | 2017-08-14 | 2017-08-14 | A kind of lithium battery MCU power supply protection circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107508342A true CN107508342A (en) | 2017-12-22 |
Family
ID=60691054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710690992.9A Pending CN107508342A (en) | 2017-08-14 | 2017-08-14 | A kind of lithium battery MCU power supply protection circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107508342A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213993A (en) * | 2010-04-01 | 2011-10-12 | 康佳集团股份有限公司 | Circuit for soft startup and soft shutdown |
| CN202395885U (en) * | 2011-12-20 | 2012-08-22 | Tcl集团股份有限公司 | Power switch and television set |
| CN103199392A (en) * | 2013-04-10 | 2013-07-10 | 卫斌鹏 | Alternating current socket with overvoltage protection |
| CN103407380A (en) * | 2013-07-29 | 2013-11-27 | 天津市松正电动汽车技术股份有限公司 | Scooter controller based on single chip microcomputer |
| CN204031116U (en) * | 2014-07-25 | 2014-12-17 | 苏州路之遥科技股份有限公司 | A kind of touch key function control circuit of charged electronic switch |
| CN104270003A (en) * | 2014-09-10 | 2015-01-07 | 珠海格力电器股份有限公司 | Power supply control method and circuit and electrical equipment |
| CN204794147U (en) * | 2015-06-03 | 2015-11-18 | 九阳股份有限公司 | Low -power consumption power control circuit |
| CN105515159A (en) * | 2015-12-25 | 2016-04-20 | 南京普天大唐信息电子有限公司 | Solar energy controller power source circuit |
| CN205265655U (en) * | 2015-12-31 | 2016-05-25 | 深圳飞安瑞电子科技有限公司 | Stand -by power consumption is zero single bond switching on and shutting down circuit |
| CN205356293U (en) * | 2015-12-31 | 2016-06-29 | 深圳飞安瑞电子科技有限公司 | Stand -by power consumption is zero resistance -capacitance step -down power supply double key switching on and shutting down circuit |
| CN106522331A (en) * | 2016-12-22 | 2017-03-22 | 乳源南岭智能家用机械有限公司 | Intelligent closestool with power saving function and circuits of intelligent closestool |
| WO2017059706A1 (en) * | 2015-10-10 | 2017-04-13 | 中兴通讯股份有限公司 | Power source dormancy and wakeup circuit |
| WO2017113601A1 (en) * | 2015-12-28 | 2017-07-06 | 深圳Tcl数字技术有限公司 | Zero power-consumption standby circuit and zero power-consumption standby television |
| CN206992758U (en) * | 2017-08-14 | 2018-02-09 | 惠州市蓝微电子有限公司 | A kind of lithium battery energy-saving protective circuit |
-
2017
- 2017-08-14 CN CN201710690992.9A patent/CN107508342A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213993A (en) * | 2010-04-01 | 2011-10-12 | 康佳集团股份有限公司 | Circuit for soft startup and soft shutdown |
| CN202395885U (en) * | 2011-12-20 | 2012-08-22 | Tcl集团股份有限公司 | Power switch and television set |
| CN103199392A (en) * | 2013-04-10 | 2013-07-10 | 卫斌鹏 | Alternating current socket with overvoltage protection |
| CN103407380A (en) * | 2013-07-29 | 2013-11-27 | 天津市松正电动汽车技术股份有限公司 | Scooter controller based on single chip microcomputer |
| CN204031116U (en) * | 2014-07-25 | 2014-12-17 | 苏州路之遥科技股份有限公司 | A kind of touch key function control circuit of charged electronic switch |
| CN104270003A (en) * | 2014-09-10 | 2015-01-07 | 珠海格力电器股份有限公司 | Power supply control method and circuit and electrical equipment |
| CN204794147U (en) * | 2015-06-03 | 2015-11-18 | 九阳股份有限公司 | Low -power consumption power control circuit |
| WO2017059706A1 (en) * | 2015-10-10 | 2017-04-13 | 中兴通讯股份有限公司 | Power source dormancy and wakeup circuit |
| CN105515159A (en) * | 2015-12-25 | 2016-04-20 | 南京普天大唐信息电子有限公司 | Solar energy controller power source circuit |
| WO2017113601A1 (en) * | 2015-12-28 | 2017-07-06 | 深圳Tcl数字技术有限公司 | Zero power-consumption standby circuit and zero power-consumption standby television |
| CN205265655U (en) * | 2015-12-31 | 2016-05-25 | 深圳飞安瑞电子科技有限公司 | Stand -by power consumption is zero single bond switching on and shutting down circuit |
| CN205356293U (en) * | 2015-12-31 | 2016-06-29 | 深圳飞安瑞电子科技有限公司 | Stand -by power consumption is zero resistance -capacitance step -down power supply double key switching on and shutting down circuit |
| CN106522331A (en) * | 2016-12-22 | 2017-03-22 | 乳源南岭智能家用机械有限公司 | Intelligent closestool with power saving function and circuits of intelligent closestool |
| CN206992758U (en) * | 2017-08-14 | 2018-02-09 | 惠州市蓝微电子有限公司 | A kind of lithium battery energy-saving protective circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105515159B (en) | A kind of controller for solar power circuit | |
| CN201975986U (en) | Full-bridge drive circuit of square wave inverter | |
| CN205509647U (en) | Switch control device | |
| CN206992758U (en) | A kind of lithium battery energy-saving protective circuit | |
| CN205051402U (en) | Lithium batteries control circuit | |
| CN205334124U (en) | One -key switching circuit | |
| CN105322948B (en) | Half-bridge drive circuit | |
| CN107508342A (en) | A kind of lithium battery MCU power supply protection circuits | |
| CN104897991A (en) | Battery simulator circuit | |
| CN203658414U (en) | Cell simulation circuit | |
| CN206619921U (en) | The control circuit and control device of a kind of timing start-up and automatic shutdown | |
| CN206564464U (en) | A kind of current foldback circuit without sample resistance | |
| CN107086783A (en) | A kind of high-power switching circuit | |
| CN109391162A (en) | Low-power consumption AC-DC conversion switch circuit | |
| CN206004528U (en) | A kind of high power booster circuit | |
| CN208548754U (en) | The power-supply system and vehicle communications device of vehicle communications device | |
| CN105099236B (en) | A kind of VCC accessory power supplys power supply circuit | |
| CN206211630U (en) | A kind of many charging modes band defencive function lithium battery charging circuits | |
| CN208062841U (en) | A kind of charger circuit with short-circuit protection | |
| CN206023280U (en) | Over-discharge protection circuit | |
| CN207265891U (en) | Low-power consumption AC DC conversion switch circuits | |
| CN206506741U (en) | A kind of intelligent emergent ball bubble of outside mechanical switch control | |
| CN207069904U (en) | A kind of high-power switching circuit | |
| CN206894606U (en) | A kind of power supply chip active circuit | |
| CN206283485U (en) | A kind of simple SICMOS drive circuits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |