CN205355793U - Hold battery under voltage protection circuit - Google Patents
Hold battery under voltage protection circuit Download PDFInfo
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- CN205355793U CN205355793U CN201620125261.0U CN201620125261U CN205355793U CN 205355793 U CN205355793 U CN 205355793U CN 201620125261 U CN201620125261 U CN 201620125261U CN 205355793 U CN205355793 U CN 205355793U
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Abstract
The utility model provides a hold battery under voltage protection circuit, it includes resistance R1, diode D1, potentiometre RP1, MOS pipe Q2 and MOS pipe Q3. The utility model discloses can solve the current big problem of undervoltage protection circuit quiescent power dissipation.
Description
Technical field
This utility model belongs to electronic circuit field, particularly relates to a kind of storage battery under-voltage protection circuit.
Background technology
Accumulator is modal energy-storage travelling wave tube in daily life, big to automobile, electric motor car, little of mobile phone, accumulator is all had inside charger baby, it is known that, the service life of accumulator can be fewer and feweri along with the lengthening electricity of the time of use, greatly reason is in that battery overdischarge and the voltage reduction that causes can cause pole plate acidifying, thus reducing the normal service life of accumulator, major part accumulator is not equipped with undervoltage protection device in the market, reason is in that the most structure of existing under-voltage protecting circuit is complicated, the protection device volume produced is bigger, and quiescent dissipation is big during for monitoring voltage, waste electric energy, also affect the output voltage stability of load.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of storage battery under-voltage protection circuit provided, it can solve the problem that existing under-voltage protecting circuit quiescent dissipation is big.
The purpose of utility model is achieved in that
A kind of storage battery under-voltage protection circuit, it includes resistance R1, diode D1, potentiometer RP1, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3, it is characterized in that: one end of described resistance R1 connects resistance R2 respectively, load RL, the emitter stage of audion Q1, relay J, the contact J-1 of button K and relay J, the other end of button K connects the other end of the contact J-1 of relay J and the positive pole of power supply E, the other end of resistance R1 connects a fixing end of potentiometer RP1, the sliding end of potentiometer RP1 connects the reference pole of resistance R7 and three terminal integrated voltage stabilizer U1, the base stage of the other end connecting triode Q1 of resistance R2 and the anode of diode D1, the negative electrode of diode D1 connects resistance R3, the other end of resistance R3 connects the negative electrode of three terminal integrated voltage stabilizer U1, another fixing end of potentiometer RP1 connects resistance R4, the negative pole of power supply E, the anode of three terminal integrated voltage stabilizer U1 and the drain electrode of metal-oxide-semiconductor Q1, the other end of resistance R5 connects the grid of metal-oxide-semiconductor Q2 and the grid of metal-oxide-semiconductor Q3, the colelctor electrode of audion Q1 connects the anode of diode D2, resistance R5 and resistance R6, the other end of resistance R6 connects the drain electrode of metal-oxide-semiconductor Q3 and the other end of load RL.
The model of above-mentioned three terminal integrated voltage stabilizer U1 is TL431.
Above-mentioned diode D2 is light emitting diode.
This utility model can bring techniques below effect:
Adopting said structure, this circuit structure is simple, components and parts are few, and cost of manufacture finished-product volume that is low and that make is little, can automatically power by disconnecting consumers when running into storage battery under-voltage, the effectively realization under-voltage protection to accumulator, and whole circuit without quiescent dissipation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is circuit diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of storage battery under-voltage protection circuit, it includes resistance R1, diode D1, potentiometer RP1, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3, it is characterized in that: one end of described resistance R1 connects resistance R2 respectively, load RL, the emitter stage of audion Q1, relay J, the contact J-1 of button K and relay J, the other end of button K connects the other end of the contact J-1 of relay J and the positive pole of power supply E, the other end of resistance R1 connects a fixing end of potentiometer RP1, the sliding end of potentiometer RP1 connects the reference pole of resistance R7 and three terminal integrated voltage stabilizer U1, the base stage of the other end connecting triode Q1 of resistance R2 and the anode of diode D1, the negative electrode of diode D1 connects resistance R3, the other end of resistance R3 connects the negative electrode of three terminal integrated voltage stabilizer U1, another fixing end of potentiometer RP1 connects resistance R4, the negative pole of power supply E, the anode of three terminal integrated voltage stabilizer U1 and the drain electrode of metal-oxide-semiconductor Q1, the other end of resistance R5 connects the grid of metal-oxide-semiconductor Q2 and the grid of metal-oxide-semiconductor Q3, the colelctor electrode of audion Q1 connects the anode of diode D2, resistance R5 and resistance R6, the other end of resistance R6 connects the drain electrode of metal-oxide-semiconductor Q3 and the other end of load RL.
The model of described three terminal integrated voltage stabilizer U1 is TL431.
Described diode D2 is light emitting diode.
Adopt said structure, during use, resistance R1 and potentiometer RP1 in circuit form voltage sample circuit, charge threshold level is regulated by potentiometer RP1, during use, press switch K, now battery tension is sufficient, voltage is added in the reference pole of U1 after resistance R1 and potentiometer RP1, U1 triggering and conducting, audion Q1 turns on, the luminous voltage as normal operation of light emitting diode D2 conducting indicates, metal-oxide-semiconductor Q2 and Q3 conducting simultaneously, whole electricity consumption loop is connected, load RL obtains electric, relay J adhesive simultaneously, enter self-locking state, when battery tension is reduced to under-voltage marginal value, undertension after resistance R1 and potentiometer RP1 dividing potential drop is to turn on U1, thus turning off audion Q1, metal-oxide-semiconductor Q2 and Q3 cut-off therewith, disconnect with the loop of electric loading RL, relay J dead electricity simultaneously, disconnect the load of whole circuit, thus reducing the purpose of quiescent dissipation.
Claims (3)
1. a storage battery under-voltage protection circuit, it includes resistance R1, diode D1, potentiometer RP1, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3, it is characterized in that: one end of described resistance R1 connects resistance R2 respectively, load RL, the emitter stage of audion Q1, relay J, the contact J-1 of button K and relay J, the other end of button K connects the other end of the contact J-1 of relay J and the positive pole of power supply E, the other end of resistance R1 connects a fixing end of potentiometer RP1, the sliding end of potentiometer RP1 connects the reference pole of resistance R7 and three terminal integrated voltage stabilizer U1, the base stage of the other end connecting triode Q1 of resistance R2 and the anode of diode D1, the negative electrode of diode D1 connects resistance R3, the other end of resistance R3 connects the negative electrode of three terminal integrated voltage stabilizer U1, another fixing end of potentiometer RP1 connects resistance R4, the negative pole of power supply E, the anode of three terminal integrated voltage stabilizer U1 and the drain electrode of metal-oxide-semiconductor Q1, the other end of resistance R5 connects the grid of metal-oxide-semiconductor Q2 and the grid of metal-oxide-semiconductor Q3, the colelctor electrode of audion Q1 connects the anode of diode D2, resistance R5 and resistance R6, the other end of resistance R6 connects the drain electrode of metal-oxide-semiconductor Q3 and the other end of load RL.
2. a kind of storage battery under-voltage protection circuit according to claim 1, it is characterised in that: the model of described three terminal integrated voltage stabilizer U1 is TL431.
3. a kind of storage battery under-voltage protection circuit according to claim 1, it is characterised in that: described diode D2 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125261.0U CN205355793U (en) | 2016-02-18 | 2016-02-18 | Hold battery under voltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125261.0U CN205355793U (en) | 2016-02-18 | 2016-02-18 | Hold battery under voltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205355793U true CN205355793U (en) | 2016-06-29 |
Family
ID=56179492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620125261.0U Expired - Fee Related CN205355793U (en) | 2016-02-18 | 2016-02-18 | Hold battery under voltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205355793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012639A (en) * | 2017-11-22 | 2018-05-11 | 深圳润丰投资咨询有限公司 | A kind of liquid fertilizer uniformly sprays top dressing car |
-
2016
- 2016-02-18 CN CN201620125261.0U patent/CN205355793U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012639A (en) * | 2017-11-22 | 2018-05-11 | 深圳润丰投资咨询有限公司 | A kind of liquid fertilizer uniformly sprays top dressing car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160629 Termination date: 20170218 |