CN107069657A - A kind of under-voltage wake-up circuit and method - Google Patents
A kind of under-voltage wake-up circuit and method Download PDFInfo
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- CN107069657A CN107069657A CN201611259898.XA CN201611259898A CN107069657A CN 107069657 A CN107069657 A CN 107069657A CN 201611259898 A CN201611259898 A CN 201611259898A CN 107069657 A CN107069657 A CN 107069657A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to electric and electronic technical field, more particularly to a kind of under-voltage wake-up circuit and method, output module receives the electric energy from batteries and output when first switch module is connected；Battery management module is connected with batteries and first switch module respectively, for detecting the voltage in batteries, in detect batteries it is under-voltage when first switch module is disconnected；Second switch module is connected with batteries；Drive module receives the electric energy from batteries when second switch module is connected and exports a drive signal；LED module receives the drive signal of drive module output；Control module produces a Continuity signal when second switch module is connected；Under-voltage LED unit in LED module is connected with control module, to receive Continuity signal and emitting alarm；The output of output module can be disconnected when batteries are under-voltage, the under-voltage LED unit luminous alarm in LED module is also turned on, so that the under-voltage condition to emergency power supply is indicated, to improve Consumer's Experience.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of under-voltage wake-up circuit and method.
Background technology
Emergency power supply has had been applied in various fields due to its characteristic such as reliable, especially in automotive field, works as automobile
Battery electric power can not start automobile when not enough, and can easily solve this if vehicle-mounted emergency power supply is carried asks
Topic.
But, existing car emergency power supply seldom notes the usage experience of user, during emergency power supply use,
The battery undervoltage of emergency power supply frequently can lead to emergency power supply can not normal power supply, if in this case it is any indicate,
User can not learn the under-voltage situation of emergency power supply, may result in user and produce false judgment to the situation of emergency power supply, sternly
Emergency power supply damage is also can result in during weight.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of under-voltage wake-up circuit, applied to emergency power supply, the emergency power supply
Including an operation button and a LED module；The LED module includes a under-voltage LED unit；Including：
Batteries；
First switch module, is connected with the batteries；
Output module, is connected with the first switch module, and the output module is when the first switch module is connected
Receive the electric energy from the batteries and output；
Battery management module, is connected with the batteries and the first switch module, for detecting the storage respectively
Voltage in battery pack, in detect the batteries it is under-voltage when by the first switch module disconnect；
Second switch module, key control break-make is pressed by the operation；
The second switch module is connected with the batteries；
Drive module, is connected with the second switch module, and the drive module is when the second switch module is connected
Receive the electric energy from the batteries and export a drive signal；
The LED module is connected with the drive module, to receive the drive signal of the drive module output；
Control module, is connected with the second switch module, and the control module is when the second switch module is connected
Produce a Continuity signal；
The under-voltage LED unit in the LED module is connected with the control module, to receive the Continuity signal simultaneously
Emitting alarm.
Above-mentioned under-voltage wake-up circuit, wherein, the operation button is normally opened button.
Above-mentioned under-voltage wake-up circuit, wherein, the control module is also connected with the output module, for described
The connection number of times of two switch modules is counted, to be adjusted according to the connection number of times to the output voltage of the output module
Section.
Above-mentioned under-voltage wake-up circuit, wherein, the output module includes：
USB output units, are connected with the first switch module, for giving USB connection equipment charges；
Cigar tip output unit, is connected with the first switch module, for being charged to automobile batteries.
Above-mentioned under-voltage wake-up circuit, wherein, the output module also includes：
Detection unit, is connected with the first switch module, for detecting described when the first switch module is connected
Voltage and output in batteries；
The control module is also connected with the detection unit, described in being judged according to the voltage in the batteries
The dump energy of batteries and display.
A kind of under-voltage awakening method, applied to under-voltage wake-up circuit as described above, including：
Step S1, sets a batteries；
Step S2, a first switch module is connected with the batteries；
Step S3, an output module is connected with the first switch module, and when institute is connected in the first switch module
State output module and receive the electric energy from the batteries and output；
Step S4, a battery management module is connected with the batteries and the first switch module respectively, to examine
The voltage surveyed in the batteries, in detect the batteries it is under-voltage when by the first switch module disconnect；
Step S5, sets the second switch module by key control break-make by the operation；
Step S6, the second switch module is connected with the batteries；
Step S7, a drive module is connected with the second switch module, and when institute is connected in the second switch module
Drive module is stated to receive the electric energy from the batteries and export a drive signal；
Step S8, the LED module is connected with the drive module, to receive the drive of the drive module output
Dynamic signal；
Step S9, a control module is connected with the second switch module, and when institute is connected in the second switch module
State control module and produce a Continuity signal；
Step S10, the under-voltage LED unit in the LED module is connected with the control module, to receive described lead
Messenger and emitting alarm.
Above-mentioned under-voltage awakening method, wherein, the operation button is normally opened button.
Above-mentioned under-voltage awakening method, wherein, the control module is connected with the output module, with to described second
The connection number of times of switch module is counted, and the output voltage of the output module is adjusted according to the connection number of times
Section.
Above-mentioned under-voltage awakening method, wherein, the output module includes：
USB output units, are connected with the first switch module, for giving USB connection equipment charges；
Cigar tip output unit, is connected with the first switch module, for being charged to automobile batteries.
Above-mentioned under-voltage awakening method, wherein, the output module also includes：
Detection unit, is connected with the first switch module, for detecting described when the first switch module is connected
Voltage and output in batteries；
The control module is also connected with the detection unit, described in being judged according to the voltage in the batteries
The dump energy of batteries and display.
Beneficial effect：A kind of under-voltage wake-up circuit proposed by the present invention and method can disconnect defeated when batteries are under-voltage
Go out the output of module, the under-voltage LED unit luminous alarm in LED module is also turned on, so as to the under-voltage condition of emergency power supply
Indicated, to improve Consumer's Experience.
Brief description of the drawings
Fig. 1 is the structural representation of under-voltage wake-up circuit in one embodiment of the invention；
Fig. 2 is the part-structure schematic diagram of output module in one embodiment of the invention；
Fig. 3 is the circuit theory of battery management module in one embodiment of the invention, first switch module and batteries
Figure；
Fig. 4 is the circuit theory diagrams for the circuit being connected in one embodiment of the invention with operation button；
Fig. 5 is the circuit theory diagrams of USB output units in one embodiment of the invention；
Fig. 6 is the circuit theory diagrams of cigar tip output unit in one embodiment of the invention；
Fig. 7 is the circuit theory diagrams of drive module and LED module in one embodiment of the invention；
Fig. 8 is the circuit theory diagrams of detection unit in one embodiment of the invention；
Fig. 9 is the circuit theory diagrams of control module in one embodiment of the invention；
Figure 10 is the step flow chart of under-voltage awakening method in one embodiment of the invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
In a preferred embodiment, as shown in Figure 1, it is proposed that a kind of under-voltage wake-up circuit, applied to emergency power supply,
Emergency power supply includes an operation button (the operation button can be arranged on the shell of emergency power supply) and a LED module 10；LED
Module 10 includes a under-voltage LED unit (LED of such as one or one group particular color, such as orange LED)；It can include：
Batteries 20；
First switch module 30, is connected with batteries 20；
Output module 40, is connected with first switch module 30, and output module 40 is received when first switch module 30 is connected
Electric energy and output from batteries 20；
Battery management module 50, is connected with batteries 20 and first switch module 30, for detecting batteries respectively
Voltage on 20, in detect batteries 20 it is under-voltage when first switch module 30 is disconnected；
Second switch module 60, key control break-make is pressed by operation；
Second switch module 60 is connected with batteries 20；
Drive module 70, is connected with second switch module 60, and drive module 70 is received when second switch module 60 is connected
Electric energy from batteries 20 simultaneously exports a drive signal；
LED module 10 is connected with drive module 70, to receive the drive signal of the output of drive module 70；
Control module 80, is connected with second switch module 60, and control module 80 is produced when second switch module 60 is connected
One Continuity signal；
Under-voltage LED unit in LED module 10 is connected with control module 80, to receive Continuity signal and emitting alarm.
In a preferred embodiment, operation button is normally opened button.
In a preferred embodiment, control module 80 is also connected with output module 40, for second switch module
60 connection number of times is counted, so that the output voltage of output module 40 to be adjusted according to connection number of times.
In a preferred embodiment, as shown in Fig. 2 output module 40 can include：
USB output units 41, are connected with first switch module 30, for giving USB connection equipment charges；
Cigar tip output unit 42, is connected with first switch module, for being charged to automobile batteries.
In above-described embodiment, it is preferable that output module 40 can also include：
Detection unit 43, is connected with first switch module 30, for detecting battery when first switch module 30 is connected
Voltage and output in group 20；
Control module 80 is also connected with detection unit 43, for judging batteries 20 according to the voltage in batteries 20
Dump energy and display.
Specifically, the model of first switch module 30 and second switch module 60 can be SI4459ADY；USB is exported
Unit 41 can be constituted using model AP2953A chip；Cigar tip output unit 42 can be using model SX1312's
Chip is constituted；Battery management module 50 can be constituted using model SH367003 chip；Drive module 70 can use type
Number for HT753 chip constitute；Control module 80 can be constituted using model HC18P124 chip；As shown in Fig. 3
Partial circuit diagram in one embodiment of the invention, wherein, batteries P1 is to be connected to be formed by three batteries, battery management mould
Block U2 is detected to two pole tensions of each battery, and batteries are then judged when detecting any one storage battery under-voltage
P1 is under-voltage, and now battery management module U2 sends signal to open first by DSG pins to first switch module Q3 grid
Close module Q3 to disconnect, although metal-oxide-semiconductor Q2 still keeps the state opened, because first switch module Q3, which disconnects, causes batteries P1
Powered (Out1 connections output module 40) without normal direction delivery outlet Out1；Now, if by output module 40 and drive module 70 simultaneously
Connection, output module 40 and LED module 10 can not again it is electric, then the under-voltage LED unit in LED module 10 can not obtain it is electric light,
Therefore, a second switch module Q1 is connected in this embodiment of the invention in batteries P1 one end, is owed in batteries P1
Such as during pressure, voltage is 9V when under-voltage, when the circuit of delivery outlet Out2 connections is off-state, second switch module Q1 grid
Voltage on extremely remains able to reach 9V or so so that second switch module Q1 is remained off, but works as second switch
Module Q1 state changes and turn on, the under-voltage LED unit in LED module 10 can be allowed to obtain electric light and alarmed, second switch
Module Q1 conductings can be the result of manual operation, such as user reduces second switch module Q1 grid by pressing operation button
Pole tension, so that second switch module Q1 is turned on；More specifically, with reference to Fig. 4, the output in input port In1 connection figures 3
Delivery outlet Out2 in mouth Out1, input port In2 connection figures 3, when operation button SW1 is pressed, can connect transistor Q9, from
And a Continuity signal is produced on pin KEY, and then Continuity signal is exported to the control module 80 being connected with pin KEY；From
The electric energy of input port In1 inputs is transferred on pin VBUS by transistor Q8, so that the circuit turn-on that will be connected with VBUS, than
Such as drive module 70, so that the under-voltage LED unit in LED module 10 be lighted；More specifically, it is this with reference to Fig. 5~9, Fig. 5
The circuit diagram of USB output units 41 in embodiment, Fig. 6 is the circuit diagram of cigar tip output unit 42 in the present embodiment, its moderate snow
Eggplant head output unit 42 can also export the power supply being adapted to notebook computer, be entered by the compression number to operation button SW1
Line trace can realize that cigar tip output unit 42 is switched between two kinds of charge modes of automobile batteries and notebook computer；Figure
7 be drive module 70 and the circuit diagram of LED module 10 in the present embodiment, and drive module 70 employs HT753 chips；Fig. 8 serves as reasons
The detection circuit 43 of divider resistance composition；Fig. 9 is the control module in the present embodiment；Pin can not referred in this in Fig. 3~9
Refer to the attached drawing.
It is under-voltage applied to as above present invention also offers a kind of under-voltage awakening method in a preferred embodiment
Wake-up circuit, as shown in Figure 10, can include：
Step S1, sets a batteries；
Step S2, a first switch module is connected with batteries；
Step S3, an output module is connected with first switch module, and output module connects when first switch module is connected
Receive the electric energy from batteries and output；
Step S4, a battery management module is connected with batteries and first switch module respectively, to detect battery
Voltage in group, in detect batteries it is under-voltage when first switch module is disconnected；
Step S5, is set by operating the second switch module by key control break-make；
Step S6, second switch module is connected with batteries；
Step S7, a drive module is connected with second switch module, and drive module connects when second switch module is connected
Receive the electric energy from batteries and export a drive signal；
Step S8, LED module is connected with drive module, to receive the drive signal of drive module output；
Step S9, a control module is connected with second switch module, and control module is produced when second switch module is connected
A raw Continuity signal；
Step S10, the under-voltage LED unit in LED module is connected with control module, to receive Continuity signal and light
Alarm.
In a preferred embodiment, operation button is normally opened button.
In a preferred embodiment, control module is connected with output module, with the connection to second switch module
Number of times is counted, and the output voltage of output module is adjusted according to number of times is connected.
In a preferred embodiment, output module can include：
USB output units, are connected with first switch module, for giving USB connection equipment charges；
Cigar tip output unit, is connected with first switch module, for being charged to automobile batteries.
In above-described embodiment, it is preferable that output module can also include：
Detection unit, is connected with first switch module, for being detected when first switch module is connected in batteries
Voltage is simultaneously exported；
Control module is also connected with detection unit, the residue electricity for judging batteries according to the voltage in batteries
Measure and show.
In summary, a kind of under-voltage wake-up circuit proposed by the present invention and method can disconnect defeated when batteries are under-voltage
Go out the output of module, the under-voltage LED unit luminous alarm in LED module is also turned on, so as to the under-voltage condition of emergency power supply
Indicated, to improve Consumer's Experience.
By explanation and accompanying drawing, the exemplary embodiments of the specific structure of embodiment are given, based on essence of the invention
God, can also make other conversions.Although foregoing invention proposes existing preferred embodiment, however, these contents are not intended as
Limitation.
For a person skilled in the art, read after described above, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard whole variations and modifications of the true intention and scope that cover the present invention as.In power
Any and all scope and content of equal value, are all considered as still belonging to the intent and scope of the invention in the range of sharp claim.
Claims (10)
1. a kind of under-voltage wake-up circuit, applied to emergency power supply, the emergency power supply includes an operation button and a LED module；
Characterized in that, the LED module includes a under-voltage LED unit；Including：
Batteries；
First switch module, is connected with the batteries；
Output module, is connected with the first switch module, and the output module is received when the first switch module is connected
Electric energy and output from the batteries；
Battery management module, is connected with the batteries and the first switch module, for detecting the battery respectively
Voltage in group, in detect the batteries it is under-voltage when by the first switch module disconnect；
Second switch module, key control break-make is pressed by the operation；
The second switch module is connected with the batteries；
Drive module, is connected with the second switch module, and the drive module is received when the second switch module is connected
Electric energy from the batteries simultaneously exports a drive signal；
The LED module is connected with the drive module, to receive the drive signal of the drive module output；
Control module, is connected with the second switch module, and the control module is produced when the second switch module is connected
One Continuity signal；
The under-voltage LED unit in the LED module is connected with the control module, to receive the Continuity signal and light
Alarm.
2. under-voltage wake-up circuit according to claim 1, it is characterised in that the operation button is normally opened button.
3. under-voltage wake-up circuit according to claim 1, it is characterised in that the control module also with the output module
Connection, counted for the connection number of times to the second switch module, with according to it is described connect number of times to the output mould
The output voltage of block is adjusted.
4. under-voltage wake-up circuit according to claim 1, it is characterised in that the output module includes：
USB output units, are connected with the first switch module, for giving USB connection equipment charges；
Cigar tip output unit, is connected with the first switch module, for being charged to automobile batteries.
5. under-voltage wake-up circuit according to claim 4, it is characterised in that the output module also includes：
Detection unit, is connected with the first switch module, for detecting the electric power storage when the first switch module is connected
Voltage and output in the group of pond；
The control module is also connected with the detection unit, for judging the electric power storage according to the voltage in the batteries
The dump energy of pond group and display.
6. a kind of under-voltage awakening method, applied to the under-voltage wake-up circuit as described in Claims 1 to 5, it is characterised in that bag
Include：
Step S1, sets a batteries；
Step S2, a first switch module is connected with the batteries；
Step S3, an output module is connected with the first switch module, described defeated when the first switch module is connected
Go out module and receive the electric energy from the batteries and output；
Step S4, a battery management module is connected with the batteries and the first switch module respectively, to detect
State the voltage in batteries, in detect the batteries it is under-voltage when by the first switch module disconnect；
Step S5, sets the second switch module by key control break-make by the operation；
Step S6, the second switch module is connected with the batteries；
Step S7, a drive module is connected with the second switch module, described when the second switch module is connected to drive
Dynamic model block receives the electric energy from the batteries and exports a drive signal；
Step S8, the LED module is connected with the drive module, is believed with the driving for receiving the drive module output
Number；
Step S9, a control module is connected with the second switch module, the control when second switch module is connected
Molding block produces a Continuity signal；
Step S10, the under-voltage LED unit in the LED module is connected with the control module, is believed with receiving the conducting
Number and emitting alarm.
7. under-voltage awakening method according to claim 6, it is characterised in that the operation button is normally opened button.
8. under-voltage awakening method according to claim 6, it is characterised in that by the control module and the output module
Connection, is counted with the connection number of times to the second switch module, and according to the connection number of times to the output module
Output voltage be adjusted.
9. under-voltage awakening method according to claim 6, it is characterised in that the output module includes：
USB output units, are connected with the first switch module, for giving USB connection equipment charges；
Cigar tip output unit, is connected with the first switch module, for being charged to automobile batteries.
10. under-voltage awakening method according to claim 9, it is characterised in that the output module also includes：
Detection unit, is connected with the first switch module, for detecting the electric power storage when the first switch module is connected
Voltage and output in the group of pond；
The control module is also connected with the detection unit, for judging the electric power storage according to the voltage in the batteries
The dump energy of pond group and display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611259898.XA CN107069657B (en) | 2016-12-30 | 2016-12-30 | A kind of under-voltage wake-up circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611259898.XA CN107069657B (en) | 2016-12-30 | 2016-12-30 | A kind of under-voltage wake-up circuit and method |
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| CN107069657A true CN107069657A (en) | 2017-08-18 |
| CN107069657B CN107069657B (en) | 2019-10-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440220A (en) * | 1991-09-09 | 1995-08-08 | Sony Corporation | Battery discharge control circuit |
| CN102231553A (en) * | 2011-07-06 | 2011-11-02 | 天津市松正电动汽车技术股份有限公司 | Battery management system with power supply control function |
| CN102487567A (en) * | 2010-12-01 | 2012-06-06 | 海洋王照明科技股份有限公司 | LED constant current drive circuit used for portable device |
| CN202783005U (en) * | 2012-07-22 | 2013-03-13 | 陈真 | Cabin internal temperature control system for parking |
| CN104065043A (en) * | 2013-03-21 | 2014-09-24 | 海洋王（东莞）照明科技有限公司 | Battery under-voltage protection and display circuit |
-
2016
- 2016-12-30 CN CN201611259898.XA patent/CN107069657B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440220A (en) * | 1991-09-09 | 1995-08-08 | Sony Corporation | Battery discharge control circuit |
| CN102487567A (en) * | 2010-12-01 | 2012-06-06 | 海洋王照明科技股份有限公司 | LED constant current drive circuit used for portable device |
| CN102231553A (en) * | 2011-07-06 | 2011-11-02 | 天津市松正电动汽车技术股份有限公司 | Battery management system with power supply control function |
| CN202783005U (en) * | 2012-07-22 | 2013-03-13 | 陈真 | Cabin internal temperature control system for parking |
| CN104065043A (en) * | 2013-03-21 | 2014-09-24 | 海洋王（东莞）照明科技有限公司 | Battery under-voltage protection and display circuit |
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