CN209169999U - A kind of reverse connection of accumulator detection for direct current power system and protection circuit - Google Patents
A kind of reverse connection of accumulator detection for direct current power system and protection circuit Download PDFInfo
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- CN209169999U CN209169999U CN201822034399.1U CN201822034399U CN209169999U CN 209169999 U CN209169999 U CN 209169999U CN 201822034399 U CN201822034399 U CN 201822034399U CN 209169999 U CN209169999 U CN 209169999U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a kind of reverse connection of accumulator detection for direct current power system and protection circuit; it is characterized by comprising battery, main power circuit, battery bleeder circuit, clamp circuit, operational amplification circuit and cpu control circuit, the cpu control circuits.The voltage signal of battery bleeder circuit acquisition battery; the collected voltage signal of battery bleeder circuit is amplified and is modulated by operational amplification circuit; input cpu control circuit; signal is carried out operation and controls the conducting and cut-off of switch mosfet pipe M1, M2 in the light on and off and main power circuit of LED1, LED2 by cpu control circuit; clamp circuit connects the non-inverting input terminal of amplifier, plays defencive function.The utility model can either detect simultaneously and indicate three kinds of access states of battery, and can guarantee the safety of system.
Description
Technical field
The utility model relates to inverted connection detecting circuit more particularly to a kind of detection of reverse connection of accumulator and protection circuits.
Background technique
Conventional charger often lack storage battery reverse connection protection circuit or reverse connection of accumulator defencive function can only be first
Beginning plays a role when powering on, and requiring manual intervention reset could restart, and reliability is poor.
Reverse connection of accumulator will lead to serious electric fault, can cause major fire hazard what is more.It simultaneously can to personnel
It can cause great personal injury.General charge power supply is fitted with non-return diode, and battery voltage is prevented to be higher than charging
Module voltage and formed electric current reverse irrigation, but this mode be unable to satisfy reverse connection of accumulator protection requirement.Power module is still
It is inevitably damaged by the impact of huge current flow, more serious person may lead battery-end arc discharge, thus to All other routes
Cause chain damage evil even fire.
Utility model content
In view of this, the utility model aim is to overcome the shortcomings of the prior art, instruction can be detected by providing one kind,
The reverse connection of accumulator detection of energy reliably protecting and protection circuit again.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of reverse connection of accumulator detection for direct current power system and protection circuit, including battery, main power circuit,
Battery bleeder circuit, clamp circuit, operational amplification circuit and cpu control circuit；
The main power circuit includes Switching Power Supply, non-return diode, capacitor C1 and switch mosfet pipe M1, M2, institute
It states non-return diode cathode and the capacitor C1 anode is all connected with the Switching Power Supply anode, the cathode of the capacitor C1 connects institute
The pole S of switch mosfet pipe M1 is stated, the pole D and the pole G of described switch mosfet pipe M1, M2 are respectively connected together, the storage
The cathode that the anode of battery connects the non-return diode cathode and the battery connects the S of the switch mosfet pipe M2
Pole；
The battery bleeder circuit is made of resistance R1 and resistance R2, anode, the resistance R1, electricity of the battery
The cathode of resistance R2 and battery is sequentially connected in series, the cathode ground connection of the battery；
The clamp circuit includes clamp diode, the plus earth of the clamp diode, and cathode is connected to described
The tie point of resistance R1 and resistance R2；
The operational amplification circuit includes resistance R3, R4, R5 and amplifier U1A, the resistance R5 one end connection+5V electricity
Source, the other end are connect with the inverting input terminal of the amplifier U1A, and the one end the resistance R4 is connected to the resistance R1 and the electricity
The tie point of R2 is hindered, the other end is connect with the non-inverting input terminal of the amplifier U1A, and the one end the resistance R3 connects the amplifier
The inverting input terminal of U1A, the other end connect the output end of the amplifier U1A, and the output end of the amplifier U1A connects the CPU
Control circuit；
The cpu control circuit includes cpu chip, LED1, LED2 and resistance R6, described in the cpu chip connection
The anode of LED1 and the LED2, the LED1 and the LED2 cathode are grounded, and the cpu chip is also connected with resistance R6
One end, the other end of the resistance R6 connects the pole G of described switch mosfet pipe M1, M2.
Further, the cpu chip model M058LBN.
Further, described switch mosfet pipe M1, M2 are the enhanced field-effect tube of N channel, model STB100N6F7.
Further, the model OP2171 of the amplifier U1A.
Further, the model LL4148 of the clamp diode.
Further, the luminescent color of the LED1 is green, and the luminescent color of the LED2 is red.
Compared with the existing technology, a kind of reverse connection of accumulator detection for direct current power system described in the utility model with
Protection circuit can detect just connecing, do not connect, being reversely connected three kinds of states for battery simultaneously, be prompted by LED light to user
Three kinds of access states of battery, and when battery is in and does not connect or be reversely connected, it can be realized defencive function, ensure that system
Safety.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the circuit diagram of the utility model embodiment.
Specific embodiment
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of reverse connection of accumulator detection for direct current power system and protection circuit, including battery
BAT, main power circuit, battery bleeder circuit, clamp circuit, operational amplification circuit and cpu control circuit；The main power
Circuit includes Switching Power Supply, non-return diode D2, capacitor C1 and switch mosfet pipe M1, M2, non-return diode D2 anode and
Capacitor C1 anode is all connected with the Switching Power Supply anode, the pole S of the cathode connection switch mosfet pipe M1 of capacitor C1, and MOSFET is opened
The pole D and the pole G for closing pipe M1, M2 are respectively connected together, and the anode of battery BAT connects non-return diode D2 cathode and electric power storage
The pole S of the cathode connection switch mosfet pipe M2 of pond BAT；The battery bleeder circuit is made of resistance R1 and resistance R2,
The anode of battery BAT, resistance R1, resistance R2 and battery BAT cathode be sequentially connected in series, the cathode ground connection of battery BAT；
The clamp circuit includes clamp diode D1, the plus earth of clamp diode D1, and cathode is connected to resistance R1 and resistance R2
Tie point；The operational amplification circuit includes resistance R3, R4, R5 and amplifier U1A, resistance R5 one end connection+5V power supply, separately
One end is connect with the inverting input terminal of amplifier U1A, and the one end resistance R4 is connected to the tie point of resistance R1 Yu resistance R2, the other end with
The non-inverting input terminal of amplifier U1A connects, and the one end resistance R3 connects the inverting input terminal of amplifier U1A, and the other end connects amplifier U1A's
The output end of output end, amplifier U1A connects cpu control circuit；Cpu control circuit includes cpu chip, LED1, LED2 and electricity
R6 is hindered, the output end of the cpu chip model M058LBN, amplifier U1A and the AD2 pin of M058LBN connect, and LED1 is just
The P3.2 pin of pole and M058LBN connection, LED2 anode connect with the P4.3 pin of M058LBN, one end of resistance R6 and
The P4.2 pin of M058LBN connects, and the other end of resistance R6 connects the pole G of described switch mosfet pipe M1, M2.It is practical new at this
In type, switch mosfet pipe M1, M2 are the enhanced field-effect tube of N channel, model STB100N6F7, the model of amplifier U1A
OP2171, the model LL4148 of clamp diode.
The working principle of the utility model are as follows: battery bleeder circuit acquires the voltage signal of battery, reduces voltage
Collected voltage signal is amplified and is modulated by the impact to operational amplification circuit, operational amplification circuit, is modulated into suitable
Signal is carried out operation and controls the light on and off of LED1 and LED2 by the signal of DSP input, cpu control circuit, and clamp circuit is used for
When reverse connection of accumulator, the non-inverting input terminal of amplifier is protected not cause to damage because voltage is excessively negative.When accumulator positive connects, electric power storage
Bleeder circuit acquisition positive voltage in pond enters operational amplification circuit, and operational amplification circuit output high level enters cpu control circuit,
Cpu control circuit exports high level, so that switch mosfet pipe M1, M2 are connected, main power circuit and battery are connected at this time, electricity
Hold C1 and switch power source output voltage rectify and charged by non-return diode D2 to battery, meanwhile, cpu chip
The P3.2 pin of M058LBN exports high level, and LED1 is lighted, and luminescent color is green, indicates that accumulator positive connects；When battery not
When connection, it is 0, under the action of operational amplification circuit positive bias, operational amplification circuit that battery bleeder circuit, which collects voltage,
Export positive low level, when the low level is substantially less than accumulator positive and connects, the high level of operational amplification circuit output is described low
After level enters cpu control circuit, cpu chip blocks switch mosfet pipe M1, M2 driving pulse, simultaneously after logical process
Cpu chip controls LED1 (green light) flashing, indicates that battery does not connect；When reverse connection of accumulator, the acquisition of battery bleeder circuit is negative
Pressure, while the non-inverting input terminal voltage of operational amplification circuit is clamped diode D1 clamper to -0.6V or so, at this time operation amplifier
The output voltage of circuit is 0V, and cpu control circuit blocks switch mosfet pipe M1, M2 driving pulse, meanwhile, cpu chip
The P4.3 pin of M058LBN exports high level, and LED2 is lighted, and luminescent color is red, indicates reverse connection of accumulator.The utility model
When battery does not connect or is reversely connected, switch mosfet pipe M1, M2 are not connected, and ensure that the safety of system, while passing through CPU core
Piece controls the access state of the light on and off status display battery of LED1 and LED2.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of reverse connection of accumulator detection for direct current power system and protection circuit, it is characterised in that: including battery, master
Power circuit, battery bleeder circuit, clamp circuit, operational amplification circuit and cpu control circuit；
The main power circuit includes Switching Power Supply, non-return diode, capacitor C1 and switch mosfet pipe M1, M2, it is described only
Inverse diode cathode and the capacitor C1 anode are all connected with the Switching Power Supply anode, described in the cathode connection of the capacitor C1
The pole S of switch mosfet pipe M1, the pole D and the pole G of described switch mosfet pipe M1, M2 are respectively connected together, the electric power storage
The cathode that the anode in pond connects the non-return diode cathode and the battery connects the pole S of the switch mosfet pipe M2；
The battery bleeder circuit is made of resistance R1 and resistance R2, anode, resistance R1, the resistance R2 of the battery
And the cathode of battery is sequentially connected in series, the cathode ground connection of the battery；
The clamp circuit includes clamp diode, the plus earth of the clamp diode, and cathode is connected to the resistance
The tie point of R1 and resistance R2；
The operational amplification circuit includes resistance R3, R4, R5 and amplifier U1A, the resistance R5 one end connection+5V power supply, separately
One end is connect with the inverting input terminal of the amplifier U1A, and the one end the resistance R4 is connected to the resistance R1 and the resistance R2
Tie point, the other end connect with the non-inverting input terminal of the amplifier U1A, and the one end the resistance R3 connects the amplifier U1A's
Inverting input terminal, the other end connect the output end of the amplifier U1A, and the output end of the amplifier U1A connects the CPU control electricity
Road；
The cpu control circuit includes cpu chip, LED1, LED2 and resistance R6, the cpu chip connect the LED1 with
And the anode of the LED2, the LED1 and the LED2 cathode are grounded, the cpu chip is also connected with the one of resistance R6
End, the other end of the resistance R6 connect the pole G of described switch mosfet pipe M1, M2.
2. a kind of reverse connection of accumulator detection for direct current power system according to claim 1 and protection circuit, special
Sign is: the cpu chip model M058LBN.
3. a kind of reverse connection of accumulator detection for direct current power system according to claim 1 and protection circuit, special
Sign is: described switch mosfet pipe M1, M2 are the enhanced field-effect tube of N channel, model STB100N6F7.
4. a kind of reverse connection of accumulator detection for direct current power system according to claim 1 and protection circuit, special
Sign is: the model OP2171 of the amplifier U1A.
5. a kind of reverse connection of accumulator detection for direct current power system according to claim 1 and protection circuit, special
Sign is: the model LL4148 of the clamp diode.
6. a kind of reverse connection of accumulator detection for direct current power system according to claim 1 and protection circuit, special
Sign is: the luminescent color of the LED1 is green, and the luminescent color of the LED2 is red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822034399.1U CN209169999U (en) | 2018-12-05 | 2018-12-05 | A kind of reverse connection of accumulator detection for direct current power system and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822034399.1U CN209169999U (en) | 2018-12-05 | 2018-12-05 | A kind of reverse connection of accumulator detection for direct current power system and protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209169999U true CN209169999U (en) | 2019-07-26 |
Family
ID=67342248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822034399.1U Active CN209169999U (en) | 2018-12-05 | 2018-12-05 | A kind of reverse connection of accumulator detection for direct current power system and protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209169999U (en) |
-
2018
- 2018-12-05 CN CN201822034399.1U patent/CN209169999U/en active Active
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