CN209313423U - One kind two and more battery pack reverse-connection protection circuits - Google Patents
One kind two and more battery pack reverse-connection protection circuits Download PDFInfo
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- CN209313423U CN209313423U CN201822189391.2U CN201822189391U CN209313423U CN 209313423 U CN209313423 U CN 209313423U CN 201822189391 U CN201822189391 U CN 201822189391U CN 209313423 U CN209313423 U CN 209313423U
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- 239000003990 capacitor Substances 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000005286 illumination Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 210000001699 lower leg Anatomy 0.000 description 4
- 238000005070 sampling Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
One kind two and more battery pack reverse-connection protection circuits, comprising: battery pack A, battery pack B; A group sample circuit; for acquiring battery pack A virtual voltage, B group sample circuit, for acquiring battery pack B virtual voltage; comparison control circuit; it is powered by A group sample circuit and B group sample circuit, input terminal one is electrically connected with A group sample circuit, and input terminal two is electrically connected with B group sample circuit; control terminal one controls battery pack A and connect with circuit output end, and control terminal two controls battery pack B and connect with circuit output end.Using go here and there more two and battery to use this circuit in the LED illumination products application of power supply it is possible to prevente effectively from when wherein battery is reversely connected all the way, two-way in parallel generates pressure difference, that the case where generating reverse current all the way, burning battery-heating even of forming circuit reversal connection battery.
Description
Technical field
The utility model belongs to LED illumination circuit field, and in particular to one kind two and more battery pack reverse-connection protection circuits.
Background technique
As country widelys popularize energy-conserving product, LED illumination product is increasing in the market demand.Especially LED
It is more and more using the portable LED product that all kinds of batteries are power supply in illumination application, for example, mirror lamp, flashlight etc..But
It is this kind of to have a defect with the product that battery is power supply, client can not be evaded when battery parallel connection number is more than or equal to 2 and is used
When battery reversal connection risk, if battery reversal connection does not influence client and uses the difference of product when product or client's not noticeable use again
Property, battery parallel connection generates circuit because two-way battery pack current potential in parallel is different, forms reverse current, make battery-heating, the time
One is easy to happen the safety problems such as burns long.
Chinese 207910467 U of publication CN, publication date on September 25th, 2018, the entitled counnter attack of utility model
Circuit is connect, a kind of reverse-connection preventing circuit has been provided, including the relay K being set between DC power supply and conversion circuit and is prevented
It is reversely connected module, the contact series of the relay K are between DC power supply positive input terminal and conversion circuit；The reverse-connection preventing circuit
One end connects DC power supply negative input end, and the other end is connected between DC power supply positive input terminal and contact, the relay K
Coil access in the anti-reverse module.It forms driving circuit, control by diode, triode, the discrete devices such as resistance
The function of protection circuit is realized in contact tripping when relay processed reaches reversal connection.Reverse-connection preventing circuit in correct access,
The coil of relay is not powered, therefore does not generate loss, access is not formed in major loop, therefore will not be to input voltage
It has an impact.Alarm lamp is reversely connected by being added, and realizes indicating reminders effect when reverse-connection preventing circuit reversal connection.It was both full
Sufficient surge handling capacity requirement, and cost can be reduced.
But its shortcoming is that generation acts on when can only integrally be reversely connected to power supply, it can not be in power supply part
Circuit effectively identifies when being reversely connected and protects circuit.
Utility model content
The utility model is for more strings two and battery is the LED illumination product of power supply, when only wherein battery is reversely connected all the way
When, two-way in parallel generates pressure difference, that generates reverse current all the way with forming circuit reversal connection battery, and battery-heating can be made even to burn
The problem of and devise one kind two and more battery pack reverse-connection protection circuits, make go here and there two and battery any end generate battery reversal connection
When, it generates pressure difference and is detected and output is cut off by this circuit, to protect LED illumination product.Propose one kind
Two and the more battery pack reverse-connection protection circuits for effectively avoiding battery reversal connection that lamps and lanterns is caused to damage.
One kind two and more battery pack reverse-connection protection circuits, comprising: battery pack A, anode are opened by comparing control circuit control
Pass is electrically connected with circuit output end, and anode is electrically connected with the input terminal of A group sample circuit, cathode ground connection；Battery pack B, anode are logical
It crosses comparison control circuit control switch to be electrically connected with circuit output end, cathode ground connection；A group sample circuit, for acquiring battery pack A
Virtual voltage, input terminal are electrically connected with battery pack A anode, A group sample circuit output end one and comparison control circuit input terminal one
Electrical connection, A group sample circuit output end two are electrically connected with comparison control circuit feeder ear；B group sample circuit, for acquiring battery
Group B virtual voltage, input terminal are electrically connected with battery pack B anode, B group sample circuit output end one and comparison control circuit input terminal
Two electrical connections, B group sample circuit output end two are electrically connected with comparison control circuit feeder ear；Comparison control circuit is sampled by A group
Circuit and the power supply of B group sample circuit, input terminal one are electrically connected with A group sample circuit, and input terminal two and B group sample circuit is electrically connected
It connects, control terminal one controls battery pack A and connect with circuit output end, and control terminal two controls battery pack B and connect with circuit output end.
Double sampling is carried out to battery pack by sample circuit, is once used as a reference value simultaneously by way of voltage stabilizing chip
For comparison circuit power supply, sampled value once is obtained from partial pressure end by way of partial pressure, passes through the Application of composite of a circuit, energy
Enough powerup issues for effectively solving comparison control circuit；And due to powering while two groups of sample circuits, it can be avoided single group
The problem of powering when something goes wrong, can not powering to comparison control circuit；When comparison control circuit works normally, pass through input terminal
Benchmark mouth and compare mouth and can detecte the voltage value of two mouths to control the output of delivery outlet, pass through the output valve control of delivery outlet
Mos pipe cutting processed or connection battery pack and circuit output end electrical connection.
Preferably, the A group sample circuit, comprising: resistance R1 connects ground connection, the one end resistance R1 and battery pack with R2
The electrical connection of A anode, the resistance R1 other end are electrically connected with comparison control circuit input terminal one；Capacitor C1 is in parallel with R2；Chip U1, it is defeated
Enter end to be electrically connected with battery pack A anode, output end is electrically connected with comparison control circuit feeder ear and input terminal one；Capacitor C2,
One end is electrically connected with chip U1 input terminal, other end ground connection；Capacitor C3, one end are electrically connected with chip U1 output end, another termination
Ground.
Preferably, the B group sample circuit, comprising: resistance R5 connects ground connection with R6, and resistance R5 and battery pack B are just
Pole electrical connection；Capacitor C6 is in parallel with resistance R6；Chip U2, input terminal are electrically connected with input terminal with battery pack B anode, output end with
Comparison control circuit feeder ear and input terminal two are electrically connected；Capacitor C4, one end are electrically connected with chip U2 input terminal, another termination
Ground；Capacitor C5, one end are electrically connected with chip U2 output end, other end ground connection.
Preferably, the comparison control circuit, comprising: chip U3, power input and A group sample circuit output end
Two and B group sample circuit output end two is electrically connected, and the benchmark mouth of input terminal one is electrically connected with A group sample circuit output end two,
The comparison mouth of input terminal one is electrically connected with A group sample circuit output end one, and the benchmark mouth and B group sample circuit of input terminal two export
Two electrical connection of end, the comparison mouth of input terminal two are electrically connected with A group sample circuit output end one, output end one and A group control mos pipe
G grade be electrically connected by resistance R3, the G grade of output end two and B group control mos pipe is electrically connected by resistance R7；Resistance R4, one end
It is electrically connected with chip U3 output end one, other end ground connection；Resistance R8, one end are electrically connected with chip U3 output end two, another termination
Ground；A group control mos pipe, D grade are electrically connected with battery pack A, G grades pass through resistance R3 be electrically connected with chip U3 output end one, S grades and
Circuit output end electrical connection；B group controls mos pipe, and D grades are electrically connected with battery pack B, and G grades pass through resistance R7 and chip U3 output end
Two electrical connections, S grades are electrically connected with circuit output end.
Preferably, the chip U1 in the A group sample circuit uses 78L05 voltage stabilizing chip.
Preferably, the chip U2 in the B group sample circuit uses 78L05 voltage stabilizing chip.
Preferably, the chip U3 in the comparison control circuit uses LM393 comparable chip.
The substantial effect of the utility model is: using go here and there more two and battery to make in the LED illumination products application of power supply
With this circuit it is possible to prevente effectively from when wherein battery is reversely connected all the way, two-way in parallel generates pressure difference, forming circuit reversal connection battery that
The case where generating reverse current all the way, burning battery-heating even.
Detailed description of the invention
Fig. 1 is one quick start line circuit schematic diagram of embodiment.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, specific embodiment of the present utility model is made further specific
Explanation.
Embodiment one:
One kind two and more battery pack reverse-connection protection circuits, as shown in Figure 1, being one quick start line circuit principle of embodiment
Figure, the common powering load of battery pack A and B, battery pack A and B are respectively by the lithium battery group of 8 section 1.5V at electric when all just connecing
Pond group voltage is 12V.When being reversely connected, 1 section is reversely connected 7 sections and just connects, and single group battery voltage is 9V；The reversal connection of two sections, single group electricity
Pond group voltage is 6V；And so on.
Battery pack A and B are composed in series by the lithium battery of 8 section 1.5V respectively, the cathode of battery pack A and the cathode of battery pack B
It is connected, and is connected with the 4th end of the second end of C1, C2, C3, C4, C5, C6, R2, R4, R6, R8 and the second end U3 of U1U2.Electricity
The crus secunda D foot of the first end of the anode and R1 of pond group A, the first end of C2, third the foot IN and QS41 of U1 is connected.Battery pack B
Anode and the first end of R5, the crus secunda D foot of the first end of C4, third the foot IN and QS42 of U3 be connected.
The first end of capacitor C2, the third foot IN and battery pack A of U1 anode connect, the 1 of the first end of capacitor C3 and U1
Foot OUT is connected, and the second end of the second end of capacitor C2, the second end of capacitor C3, chip U1 is connected with the cathode of battery pack A.Electricity
The first end of capacitor C4, the anode of the third foot IN and battery pack B of U2 are connect, the first end and the 1 foot OUT phase of U2 of capacitor C5
Even, the second end of the second end of capacitor C4, the second end of capacitor C5, chip U2 is connected with the cathode of battery pack B.
The second end of R1, the first end of R2, C1 and the 5th foot IN B+ connection of U3, R3 second end and R4 first end and U3
The 7th foot OUT B connection；The second end of R5, the first end of R6, C6 and third foot IN A+connection of U3；The second end of R7 and
First foot OUT A connection of R8 first end and U3；The first end of the crus secunda D and R1 of mos pipe QS41 and the positive phase of battery pack A
Even；The third foot of third the foot S and QS42 of mos pipe QS41 connect；The first end of the first foot G and R3 of mos pipe QS41 connects；
The crus secunda D of mos pipe QS42 is connected with the first end of R5 with the anode of battery pack B；The of the first foot G and R7 of mos pipe QS42
One end connection；The second end of resistance R2, R4, R6, R8, the second end of capacitor C1, C2, C3, C4, C5, C6 and the 4th foot GND of U3
It is connect with battery electrode.
When battery is all just connecing, battery pack both end voltage is+12V, and by R1, the voltage signal of the partial pressure sampling of R2 is
MOS is connected greater than reference signal 5V in 6V, and route works normally, when battery pack has battery reversal connection, battery voltage≤+ 9V electricity
Pressure is less than 5V by R1, the voltage signal of the partial pressure sampling of R2, and MOS turns off route and disconnects, to play a protective role.
The threshold value of input signal is adjusted by the resistance value of R5 and R6；U1, U2 can be replaced with the core of other output signals
Piece adjusts the case where threshold value of input signal is to adapt to all kinds of input voltages by adjusting the resistance value of R1 and R2, R5 and R6.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. one kind two and more battery pack reverse-connection protection circuits characterized by comprising
Battery pack A, anode are electrically connected by comparing control circuit control switch with circuit output end, anode and A group sample circuit
Input terminal electrical connection, cathode ground connection；
Battery pack B, anode are electrically connected by comparing control circuit control switch with circuit output end, cathode ground connection；
A group sample circuit, for acquiring battery pack A virtual voltage, input terminal is electrically connected with battery pack A anode, A group sample circuit
Output end one is electrically connected with comparison control circuit input terminal one, A group sample circuit output end two and comparison control circuit feeder ear
Electrical connection；
B group sample circuit, for acquiring battery pack B virtual voltage, input terminal is electrically connected with battery pack B anode, B group sample circuit
Output end one is electrically connected with comparison control circuit input terminal two, B group sample circuit output end two and comparison control circuit feeder ear
Electrical connection；
Comparison control circuit, is powered by A group sample circuit and B group sample circuit, and input terminal one and A group sample circuit is electrically connected
It connects, input terminal two is electrically connected with B group sample circuit, and control terminal one controls battery pack A and connect with circuit output end, and control terminal two is controlled
Battery pack B processed is connect with circuit output end.
2. according to claim 1 a kind of two and more battery pack reverse-connection protection circuits, which is characterized in that the A group is adopted
Sample circuit, comprising:
Resistance R1 connects ground connection with R2, and the one end resistance R1 is electrically connected with battery pack A anode, and the resistance R1 other end controls electricity compared with
Road input terminal one is electrically connected；
Capacitor C1 is in parallel with R2；
Chip U1, input terminal are electrically connected with battery pack A anode, one electricity of output end and comparison control circuit feeder ear and input terminal
Connection；
Capacitor C2, one end are electrically connected with chip U1 input terminal, other end ground connection；
Capacitor C3, one end are electrically connected with chip U1 output end, other end ground connection.
3. according to claim 1 a kind of two and more battery pack reverse-connection protection circuits, which is characterized in that the B group is adopted
Sample circuit, comprising:
Resistance R5 connects ground connection with R6, and resistance R5 is electrically connected with battery pack B anode；
Capacitor C6 is in parallel with resistance R6；
Chip U2, input terminal are electrically connected with input terminal with battery pack B anode, output end and comparison control circuit feeder ear and defeated
Enter two electrical connection of end；
Capacitor C4, one end are electrically connected with chip U2 input terminal, other end ground connection；
Capacitor C5, one end are electrically connected with chip U2 output end, other end ground connection.
4. according to claim 2 or 3 a kind of two and more battery pack reverse-connection protection circuits, which is characterized in that the ratio
Compared with control circuit, comprising:
Chip U3, power input are electrically connected with A group sample circuit output end two and B group sample circuit output end two,
The benchmark mouth of input terminal one is electrically connected with A group sample circuit output end two, the comparison mouth and A group sample circuit of input terminal one
Output end one is electrically connected,
The benchmark mouth of input terminal two is electrically connected with B group sample circuit output end two, the comparison mouth and A group sample circuit of input terminal two
Output end one is electrically connected,
Output end one is electrically connected with the G grade of A group control mos pipe by resistance R3,
Output end two is electrically connected with the G grade of B group control mos pipe by resistance R7；
Resistance R4, one end are electrically connected with chip U3 output end one, other end ground connection；
Resistance R8, one end are electrically connected with chip U3 output end two, other end ground connection；
A group control mos pipe, D grade are electrically connected with battery pack A, G grades pass through resistance R3 be electrically connected with chip U3 output end one, S grades and
Circuit output end electrical connection；
B group control mos pipe, D grade are electrically connected with battery pack B, G grades pass through resistance R7 be electrically connected with chip U3 output end two, S grades and
Circuit output end electrical connection.
5. according to claim 2 a kind of two and more battery pack reverse-connection protection circuits, which is characterized in that the A group is adopted
Chip U1 in sample circuit uses 78L05 voltage stabilizing chip.
6. according to claim 3 a kind of two and more battery pack reverse-connection protection circuits, which is characterized in that the B group is adopted
Chip U2 in sample circuit uses 78L05 voltage stabilizing chip.
7. according to claim 4 a kind of two and more battery pack reverse-connection protection circuits, which is characterized in that the comparison control
Chip U3 in circuit processed uses LM393 comparable chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822189391.2U CN209313423U (en) | 2018-12-25 | 2018-12-25 | One kind two and more battery pack reverse-connection protection circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822189391.2U CN209313423U (en) | 2018-12-25 | 2018-12-25 | One kind two and more battery pack reverse-connection protection circuits |
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| Publication Number | Publication Date |
|---|---|
| CN209313423U true CN209313423U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822189391.2U Expired - Fee Related CN209313423U (en) | 2018-12-25 | 2018-12-25 | One kind two and more battery pack reverse-connection protection circuits |
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| CN (1) | CN209313423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638787A (en) * | 2018-12-25 | 2019-04-16 | 浙江凯耀照明股份有限公司 | One kind two and more battery pack reverse-connection protection circuits |
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2018
- 2018-12-25 CN CN201822189391.2U patent/CN209313423U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638787A (en) * | 2018-12-25 | 2019-04-16 | 浙江凯耀照明股份有限公司 | One kind two and more battery pack reverse-connection protection circuits |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190827 |