CN2603565Y - Electricity charger with safety protective circuit for electric driven bicycle - Google Patents
Electricity charger with safety protective circuit for electric driven bicycle Download PDFInfo
- Publication number
- CN2603565Y CN2603565Y CN 03219327 CN03219327U CN2603565Y CN 2603565 Y CN2603565 Y CN 2603565Y CN 03219327 CN03219327 CN 03219327 CN 03219327 U CN03219327 U CN 03219327U CN 2603565 Y CN2603565 Y CN 2603565Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- charger
- safety protective
- output
- protective circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an electric appliance, in particular to an electric bicycle charger with safety protection circuit. The major technical plan includes a charging circuit and a safety protection circuit, which is characterized by connecting detection circuit input and output ends of the safety protection circuit with the charging circuit and the amplifying circuit, positioning a executive control circuit between the amplifying circuit and the charging circuit and connecting the output of the amplifying circuit with a warning circuit.The utilization of the utility model can avoid accidents and prolong the charger life.
Description
Technical field
The utility model relates to a kind of electrical equipment, specifically a kind of charger for electric bicycle with safety protective circuit.
Technical background
Electric bicycle need utilize charger that its storage battery is charged, to guarantee the normal operation of electric motor car.Charger in use exists multiple unsafe factor, as: the overvoltage charging that causes for a certain reason, can directly damage storage battery or cause accumulator explosion; The power circuit that damages charger and electric motor car owing to the error-polarity connection of charger and storage battery causes fault.
Summary of the invention
The purpose of this utility model is to design a kind of charger for electric bicycle with safety protective circuit, to avoid the generation of fault, prolongs the useful life of charger.
Its main technical schemes comprises charging circuit and safety protective circuit, it is characterized in that in safety protective circuit, and the input of testing circuit connects charging circuit and amplifying circuit respectively with output, is connected the execution control circuit between amplifying circuit and charging circuit.
Output at amplifying circuit connects warning circuit.
The utility model has the advantages that owing to the output at charger has connected a safety protective circuit; when problems such as instability or wrong polarity occurring when external power supply; safety protective circuit can in time be cut off the electricity supply automatically; avoid damaging charger and storage battery, thereby prolonged the useful life of charger and storage battery.
Safety protective circuit has passive output protection, promptly behind charger incoming transport electricity, when output does not connect charge in batteries, charger output no-voltage; In use, when short circuit appearred in output, charger can cut off out-put supply automatically; When using charger, if with the accumulator polarity reversal connection, the output of charger non-transformer, buzzer can be reported to the police simultaneously; When output over-voltage occurring in the charging process, safety protective circuit also can cut off out-put supply automatically.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is circuit theory diagrams.
Fig. 3 is the charging circuit schematic diagram.
Embodiment
As shown in the figure: whole charger comprises charging circuit and safety protective circuit, and in safety protective circuit, the input of testing circuit connects charging circuit and amplifying circuit respectively with output, is connected the execution control circuit between amplifying circuit and charging circuit.Output at amplifying circuit connects warning circuit.Charging circuit wherein can be can buy on the market any existing not with the charger of safety protective circuit.
Above-mentioned testing circuit is made up of resistance R 1～6, diode VD1～3, capacitor C 1～2; Amplifying circuit is made up of comparator IC1 (model is LM358), resistance R 8, triode VT; Carry out control circuit by small-sizedly reach power relay K and contact thereof, resistance R 7, diode VD4 forms; Warning circuit is made up of loud speaker HTD, resistance R 9, VD5.IC is a kind of common integrated circuit that has comparator function.
Charging circuit is made up of resistance R 10～29, capacitor C 3～12, diode VD6～11, transformer B1～2, IC2～3 (model LM324), LED 1～4, power supply E.
During work, because the normally opened contact of relay K is serially connected in the output end voltage positive pole, do not connecting on the lead-out terminal under the situation of storage battery, safety protective circuit is not exported charge power supply because of non-transformer, not adhesive of relay K; If when inserting the storage battery reverse electrical source, safety protective circuit oppositely ends because of VD1's, relay K equally can not adhesive, and no charging voltage is exported, and reverse current makes buzzer warning through resistance R 9, buzzer HTD, diode VD5; When having only the protection reference potential point that obtains on less than voltage stabilizing didoe VD3 to the detection voltage that is connected with the charger output and after resistance R 1,2 dividing potential drops, obtains when accumulator positive, by voltage comparator ic 1 identification back output control signal, through resistance R 8 trigger triode VT, make its conducting, relay K gets electric adhesive, the output charging voltage, accumulators charges normal; In case the output short circuit, relay can be because of dead electricity automatic disconnection contact; In addition; when causing overvoltage output for a certain reason; when accumulator voltage reaches the protection value; the detection voltage that obtains after resistance R 1,2 dividing potential drops is greater than protection during reference potential point; voltage comparator output negative potential ends triode VT, and relay discharges automatically; its contact disconnects, thereby plays the safeguard protection effect.
Claims (5)
1, the charger for electric bicycle of band safety protective circuit; comprise charging circuit and safety protective circuit; it is characterized in that in safety protective circuit the input of testing circuit connects charging circuit and amplifying circuit respectively with output, between amplifying circuit and charging circuit, is connected the execution control circuit.
2, charger according to claim 1 is characterized in that connecting warning circuit at the output of amplifying circuit.
3, charger according to claim 1 is characterized in that carrying out control circuit and is formed by connecting by relay K, diode VD4 and resistance R 7.
4, charger according to claim 1 is characterized in that amplifying circuit is formed by connecting by comparator IC and resistance R 8.
5, charger according to claim 1 is characterized in that warning circuit is formed by connecting by loud speaker HTD, diode VD5 and resistance R 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03219327 CN2603565Y (en) | 2003-01-10 | 2003-01-10 | Electricity charger with safety protective circuit for electric driven bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03219327 CN2603565Y (en) | 2003-01-10 | 2003-01-10 | Electricity charger with safety protective circuit for electric driven bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2603565Y true CN2603565Y (en) | 2004-02-11 |
Family
ID=34161181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03219327 Expired - Fee Related CN2603565Y (en) | 2003-01-10 | 2003-01-10 | Electricity charger with safety protective circuit for electric driven bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2603565Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305573A (en) * | 2015-12-11 | 2016-02-03 | 侯立新 | Pure electric automobile intelligent charging system and charging method |
-
2003
- 2003-01-10 CN CN 03219327 patent/CN2603565Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305573A (en) * | 2015-12-11 | 2016-02-03 | 侯立新 | Pure electric automobile intelligent charging system and charging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |