CN204835511U - Storage battery protection circuit - Google Patents
Storage battery protection circuit Download PDFInfo
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- CN204835511U CN204835511U CN201520492093.4U CN201520492093U CN204835511U CN 204835511 U CN204835511 U CN 204835511U CN 201520492093 U CN201520492093 U CN 201520492093U CN 204835511 U CN204835511 U CN 204835511U
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Abstract
The utility model discloses a storage battery protection circuit, including chip U1, diode VD1, diode VD2, electric capacity C, resistance R1, potentiometre R2 and triode V1, 3 difference connecting resistance R1 of chip U1 pin, battery E, triode V1 projecting pole, triode V2 projecting pole, resistance R4 and relay K contact K -1, the resistance R4 other end connect the anodal and emitting diode LED1 positive pole of emitting diode LED2 respectively, and diode VD6 negative pole and chip U1 pin 1 are connected respectively to the emitting diode LED1 negative pole. The utility model discloses a voltage instruction function's storage battery protection circuit has, circuit the normal power supply when battery voltage is in normal range's magnitude of voltage, in case its voltage is less than a certain magnitude of voltage stops promptly externally discharging, simultaneously with the pilot lamp blinking display, greatly the degree prevent battery overdischarge damage battery, circuit structure is simple in addition, and is with low costs, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of protective circuit, specifically a kind of secondary battery protection circuit.
Background technology
Storage battery as a kind of can the power store of Reusability; application widely; but the useful life of storage battery and its degree of discharge relation very large; frequent overdischarge; meeting high degree shortens the life-span of storage battery; more existing secondary battery protection circuit structural load, cost is high, is difficult to promote.
Utility model content
The purpose of this utility model is the secondary battery protection circuit providing a kind of cost low, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of secondary battery protection circuit, comprise chip U1, diode VD1, diode VD2, electric capacity C, resistance R1, potentiometer R2 and triode V1, described chip U1 pin 3 is contact resistance R1 respectively, storage battery E, triode V1 emitter, triode V2 emitter, resistance R4 and relay K contact K-1, the resistance R4 other end is connecting luminous diode LED2 positive pole and LED 1 positive pole respectively, LED 1 negative pole connects diode VD6 negative pole and chip U1 pin 1 respectively, diode VD6 positive pole connects diode VD5 positive pole respectively, diode VD4 positive pole and resistance R6, diode VD4 negative pole connects chip U1 pin 17, chip U1 pin 18 connects diode VD5 negative pole, resistance R6 other end connecting triode V2 base stage, triode V2 collector electrode is contact resistance R7 respectively, resistance R9 and flashing indicator light HL, the resistance R7 other end connects earth resistance R8 and triode V3 base stage respectively, triode V3 emitter is the contact resistance R9 other end and electric capacity C respectively, the electric capacity C other end connects the flashing indicator light HL other end and triode V4 collector electrode respectively, triode V4 grounded emitter, triode V4 base stage connecting triode V3 collector electrode, described triode V1 collector electrode connects earth fault relay K coil, triode V1 base stage contact resistance R5, the resistance R5 other end connects diode VD1 positive pole respectively, diode VD2 positive pole and diode VD3 positive pole, diode VD1 negative pole connects chip U1 pin 13, chip U1 pin 12 connects diode VD2 negative pole, chip U1 pin 15 connects diode VD3 negative pole, chip U1 pin 10 connecting luminous diode LED2 negative pole, chip U1 pin 2 connects chip U1 pin 4 and ground connection, chip U1 pin 7 connects potentiometer R3, potentiometer R3 slide plate connects chip U1 pin 6, chip U1 pin 8 connects the potentiometer R3 other end and ground connection, chip U1 pin 5 is the contact resistance R1 other end and earthing potential device R2 respectively.
As the utility model further scheme: described chip U1 is level indicating integrated circuit.
Compared with prior art; the beneficial effects of the utility model are: the utility model is the secondary battery protection circuit with voltage deixis; the circuit normal power supply when battery tension is in the magnitude of voltage of normal range (NR); once namely its voltage stop external electric discharge lower than a certain magnitude of voltage; simultaneously with indicator light flickering display, can the battery overdischarge that prevent of high degree damage storage battery, circuit structure is simple in addition; cost is low, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of secondary battery protection circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of secondary battery protection circuit, comprise chip U1, diode VD1, diode VD2, electric capacity C, resistance R1, potentiometer R2 and triode V1, described chip U1 pin 3 is contact resistance R1 respectively, storage battery E, triode V1 emitter, triode V2 emitter, resistance R4 and relay K contact K-1, the resistance R4 other end is connecting luminous diode LED2 positive pole and LED 1 positive pole respectively, LED 1 negative pole connects diode VD6 negative pole and chip U1 pin 1 respectively, diode VD6 positive pole connects diode VD5 positive pole respectively, diode VD4 positive pole and resistance R6, diode VD4 negative pole connects chip U1 pin 17, chip U1 pin 18 connects diode VD5 negative pole, resistance R6 other end connecting triode V2 base stage, triode V2 collector electrode is contact resistance R7 respectively, resistance R9 and flashing indicator light HL, the resistance R7 other end connects earth resistance R8 and triode V3 base stage respectively, triode V3 emitter is the contact resistance R9 other end and electric capacity C respectively, the electric capacity C other end connects the flashing indicator light HL other end and triode V4 collector electrode respectively, triode V4 grounded emitter, triode V4 base stage connecting triode V3 collector electrode, described triode V1 collector electrode connects earth fault relay K coil, triode V1 base stage contact resistance R5, the resistance R5 other end connects diode VD1 positive pole respectively, diode VD2 positive pole and diode VD3 positive pole, diode VD1 negative pole connects chip U1 pin 13, chip U1 pin 12 connects diode VD2 negative pole, chip U1 pin 15 connects diode VD3 negative pole, chip U1 pin 10 connecting luminous diode LED2 negative pole, chip U1 pin 2 connects chip U1 pin 4 and ground connection, chip U1 pin 7 connects potentiometer R3, potentiometer R3 slide plate connects chip U1 pin 6, chip U1 pin 8 connects the potentiometer R3 other end and ground connection, chip U1 pin 5 is the contact resistance R1 other end and earthing potential device R2 respectively.
Chip U1 is level indicating integrated circuit.
Operation principle of the present utility model is: refer to Fig. 1, U1 and peripheral cell composition accumulator voltage detecting circuit, U1 is LED electrical flat instruction integrated circuit, when U1 indicates output voltage, certain output of its correspondence is low level, and a corresponding LED is lighted, to indicate the voltage swing of now storage battery E, R1, R2 forms voltage divider, take out from R2 two ends and detect the input (the 5th pin) that voltage delivers to U1, when storage battery E voltage is in normal voltage range, certain pin then in U1 13rd ~ 15 pin is low level, therefore V1 conducting makes relay K adhesive, its make contact K-1 connects, circuit " OUT " holds output voltage.Because in this circuit, the working method of U1 is set to dot pattern, when storage battery E change in voltage, the indication output end of its correspondence is strobed, and the LED pipe corresponded is lit, and whether normal according to storage battery E voltage, relay K contact K-1 is disconnected or connects.
In this circuit, when the minimum of storage battery E voltage lower than its discharge voltage, by make U1 the 17th, 18, certain pin gating in 1 pin, the simple and easy oscillating circuit be made up of transistor V3, V4 obtains operating voltage and starting of oscillation, flashing indicator light HL is constantly glimmered, now needs to remind people to charge to storage battery E.The flicker frequency of this indicator light HL can be determined by resistance R8, electric capacity C, and electrophile can select voluntarily.When V2 conducting; V1 is in cut-off state; when indicator light HL flickering display, relay K contact K-1 disconnects; storage battery E is made to stop powering to load circuit; thus protect storage battery; LED 1 bright expression storage battery E is about to do not have electricity, and remind people to try not to use, LED 2 represents that storage battery E electricity is in full power state again.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. a secondary battery protection circuit, comprise chip U1, diode VD1, diode VD2, electric capacity C, resistance R1, potentiometer R2 and triode V1, it is characterized in that, described chip U1 pin 3 is contact resistance R1 respectively, storage battery E, triode V1 emitter, triode V2 emitter, resistance R4 and relay K contact K-1, the resistance R4 other end is connecting luminous diode LED2 positive pole and LED 1 positive pole respectively, LED 1 negative pole connects diode VD6 negative pole and chip U1 pin 1 respectively, diode VD6 positive pole connects diode VD5 positive pole respectively, diode VD4 positive pole and resistance R6, diode VD4 negative pole connects chip U1 pin 17, chip U1 pin 18 connects diode VD5 negative pole, resistance R6 other end connecting triode V2 base stage, triode V2 collector electrode is contact resistance R7 respectively, resistance R9 and flashing indicator light HL, the resistance R7 other end connects earth resistance R8 and triode V3 base stage respectively, triode V3 emitter is the contact resistance R9 other end and electric capacity C respectively, the electric capacity C other end connects the flashing indicator light HL other end and triode V4 collector electrode respectively, triode V4 grounded emitter, triode V4 base stage connecting triode V3 collector electrode, described triode V1 collector electrode connects earth fault relay K coil, triode V1 base stage contact resistance R5, the resistance R5 other end connects diode VD1 positive pole respectively, diode VD2 positive pole and diode VD3 positive pole, diode VD1 negative pole connects chip U1 pin 13, chip U1 pin 12 connects diode VD2 negative pole, chip U1 pin 15 connects diode VD3 negative pole, chip U1 pin 10 connecting luminous diode LED2 negative pole, chip U1 pin 2 connects chip U1 pin 4 and ground connection, chip U1 pin 7 connects potentiometer R3, potentiometer R3 slide plate connects chip U1 pin 6, chip U1 pin 8 connects the potentiometer R3 other end and ground connection, chip U1 pin 5 is the contact resistance R1 other end and earthing potential device R2 respectively.
2. secondary battery protection circuit according to claim 1, is characterized in that, described chip U1 is level indicating integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492093.4U CN204835511U (en) | 2015-07-09 | 2015-07-09 | Storage battery protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492093.4U CN204835511U (en) | 2015-07-09 | 2015-07-09 | Storage battery protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204835511U true CN204835511U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520492093.4U Expired - Fee Related CN204835511U (en) | 2015-07-09 | 2015-07-09 | Storage battery protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204835511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458587A (en) * | 2017-06-29 | 2017-12-12 | 湖北物连网智能用品有限公司 | A kind of wisdom agricultural unmanned plane |
-
2015
- 2015-07-09 CN CN201520492093.4U patent/CN204835511U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458587A (en) * | 2017-06-29 | 2017-12-12 | 湖北物连网智能用品有限公司 | A kind of wisdom agricultural unmanned plane |
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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: 20151202 Termination date: 20160709 |