CN202888925U - Charging protector for electric vehicle - Google Patents
Charging protector for electric vehicle Download PDFInfo
- Publication number
- CN202888925U CN202888925U CN2012205512905U CN201220551290U CN202888925U CN 202888925 U CN202888925 U CN 202888925U CN 2012205512905 U CN2012205512905 U CN 2012205512905U CN 201220551290 U CN201220551290 U CN 201220551290U CN 202888925 U CN202888925 U CN 202888925U
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- Prior art keywords
- circuit
- power supply
- pin
- electric vehicle
- wave filtering
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- 230000001012 protector Effects 0.000 title claims abstract description 21
- 238000001914 filtration Methods 0.000 claims description 29
- 230000009466 transformation Effects 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a charging protector for an electric vehicle. The charging protector comprises a shell and a built-in circuit board, wherein a button starting circuit, an alternating-current transformer-rectifier-filter circuit and a voltage comparison and detection control circuit are arranged on the built-in circuit board; the alternating-current transformer-rectifier-filter circuit is connected with the button starting circuit and the voltage comparison and detection control circuit respectively; and a delay power supply circuit is also arranged on the built-in circuit board, the input end of the delay power supply circuit is connected with the alternating-current transformer-rectifier-filter circuit, and the output end of the delay power supply circuit is connected with the voltage comparison and detection control circuit. The charging protector for the electric vehicle is small in size and convenient to use, and can accurately detect the first time when a battery is fully charged and then can automatically cut off the working power supply and personal working power supply of a charger, thus effectively preventing the phenomena that the charger is burnt by heating and the battery is over-charged.
Description
Technical field
The utility model relates to a kind of charge protection device, has been specifically related to a kind of electric vehicle charge protector.
Background technology
At present, after electric car charger is finished the battery charging of electric motor car, although can automatically stop filling to battery, but the working power of charger self can not be cut off automatically, be easy to like this make the component wear of charger, even can make the charger output HIGH voltage and continue charging to battery, cause the lost of life or the damage of battery, can cause fire, economic loss when serious.Though have in the market a kind of artificial timer and electronic timer to be used for cooperating the charger charging, but because the charging interval is by artificial setting, can't accurately be set in fully charged the 1st time outage of battery, therefore, the situation of also not cutting off the power supply after can causing battery undercharge or charging to finish can increase the danger that charger damages like this.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art; a kind of electric vehicle charge protector is provided; when electric motor car charges; can accurately detect fully charged the 1st time of battery; then automatically cut off 220 volts of AC power of charger and 220 volts of AC power of self work, guarantee that charger charges normal machine, prevents that battery of electric vehicle from being overcharged.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of electric vehicle charge protector comprises housing and internal circuit board, and wherein, described internal circuit board is provided with pushbutton enable circuit, AC transformation current rectifying and wave filtering circuit and voltage ratio and detects control circuit; Described AC transformation current rectifying and wave filtering circuit detects control circuit with pushbutton enable circuit, voltage ratio respectively and is connected.
The pushbutton enable circuit can carry out the break-make of electricity easily to charging protector, will insert plug when so just having exempted general electrical equipment energising, will pull out the troublesome operation of plug during outage; The AC transformation current rectifying and wave filtering circuit can become external power source 220V alternating voltage transformation the voltage that is fit to use, and is converted to direct current, for circuit and the charger of back; It then is the voltage that can detect the storage battery two ends that voltage ratio detects control circuit, and compares judgement, after storage battery is full of electricity, and can the control circuit outage.
The utility model makes further improvements, can for: also be provided with the time-delay power supply circuits on the described internal circuit board, the input of described time-delay power supply circuits is connected with the AC transformation current rectifying and wave filtering circuit, and output detects control circuit with voltage ratio and is connected.
The utility model makes further improvements, can for: also be provided with working indicating on the described internal circuit board, described working indicating be connected to the AC transformation current rectifying and wave filtering circuit and the time-delay power supply circuits between.Whether working indicating is mainly used in indicating this charging protector to work.
Above-mentioned voltage ratio detects control circuit by integrated circuit (IC)
2, diode D
3, D
4, triode BG
1, relay DJ
2, resistance R
3, R
4, R
5, R
6, R
7, R
8Form; Described IC
2Pin 1 pass through R
8With BG
1Base stage b be connected pin 2 and R
6Be connected, pin 3 respectively with R
4, R
5Connect, pin 4 ground connection, pin 8 is connected with the time-delay power supply circuits; DJ
2With D
3Parallel connection, their end is connected with the AC transformation current rectifying and wave filtering circuit, the other end and BG
1Collector electrode c be connected; BG
1Emitter e ground connection.
Above-mentioned time-delay power supply circuits are by integrated circuit (IC)
1, resistance R
2, capacitor C
2Form; Described IC
1Pin 1 ground connection, pin 3 detects control circuit with voltage ratio and is connected, pin 2,6 and R
2, C
2The series connection end be connected, pin 4,8 with being connected of AC transformation current rectifying and wave filtering circuit.
Above-mentioned AC transformation current rectifying and wave filtering circuit is by power transformer B
1, diode D
1, D
2, capacitor C
1Form described D
1, D
2Be connected in power transformer B in parallel
1Coil L
2Two ends, C
1With B
1In parallel.
Above-mentioned pushbutton enable circuit is by plug CH
1, fuse BX
1, push-button switch AN
1, relay DJ
1, DJ
1-1, DJ
2-1Form; Described AN
1, DJ
1-1Parallel connection, an end and BX
1Connect, the other end is connected with the AC transformation current rectifying and wave filtering circuit; DJ
1, DJ
2-1After the series connection and the power transformer B of AC transformation current rectifying and wave filtering circuit
1Coil L
1In parallel.
Above-mentioned working indicating is by LED
1, R
1Form described LED
1, R
1Be connected in series.
Above-mentioned housing is provided with mains switch, line hole, 220V AC Power supply socket, charge power supply socket and relay indicating light; Described mains switch, 220V supply socket, charge power supply socket and relay indicating light are connected with corresponding circuit on the internal circuit board respectively.From the 1st wire hole of housing, draw two wires and connect 200 volts of AC power (civil power), 200 volts of AC Power supply socket are installed for former car charger in the side of housing, also being equipped with in the side of housing had the charge power supply of positive and negative polarity socket in one minute, the charging voltage output line that connects former car charger, draw two wires from the 2nd wire hole of housing, article 1, be the electrode line of charge power supply, another is the negative line of charge power supply, and these two wires are connected to the charging socket of electric motor car.
Operation principle of the present utility model:
During circuit start, press AN
1Get final product, pressing AN
1The time, 220 alternating voltages are added to DJ
1The two ends of coil make DJ
1DJ is connected in energising adhesive work
1Inner normally opened contact DJ
1-1, be relay DJ
1Self-locking is when unclamping AN
1After, because DJ
1Self-locking makes 220 volts of alternating voltages be added to B
1Primary coil L
1Two ends, simultaneously through CH
2, CH
3To the charger power supply, make charger output charging voltage and pass through CH
4, CH
5Again through R
7, CH
6, CH
7To charge in batteries, transformer secondary output coil L
2The alternating voltage of two ends induction is via D
1And D
2The full-wave rectifying circuit that forms becomes direct current, and rectification direct current out is through C
1One the tunnel through R after the filtering
1Step-down is for LED
1Luminous indication, another road is added to IC
14,8 pin time-delays, make R
2To C
2Charging makes IC
12,6 pin voltages slowly descend, instantly be reduced to 1/3rd IC
14,8 pin voltage the time, namely delay time then, IC
13 pin output high level to IC
28 pin power supplies and through R
3Step-down is to D
4Voltage stabilizing is D
4Both end voltage is the conduction voltage drop of diode, is 0.7 volt, and 0.7 volt of voltage is again through R
4And R
5Being divided to negative pole, is IC
23 pin voltage bases, be about about 0.03 volt, this voltage is set as the reference voltage that storage battery is recharged resistance, when storage battery just began to charge, charging current was very large, the charging current R that flows through
7The time, can make R
7Two ends produce one greater than 0.03 volt voltage drop, and this voltage is by R
6Sampling also is added to IC
22 pin relatively amplify, when the voltage at storage battery two ends slowly is elevated to full charge, make R
7The voltage drop that two ends produce reduces and is lower than 0.03 volt of reference voltage, and at this moment the testing circuit of charger inside also changes, and cuts off charging voltage, and namely charger is not exported charging voltage, and charger does not pass through R without charging current after not exporting charging voltage
7, make R
7Two terminal potentials equate, namely become zero volt, if behind the storage battery full charge, charger continues the output charging voltage, at this moment, because charging current flows through R
7, add that storage battery two terminal potentials continue to rise, all make R
7Both end voltage has an opportunity to be lower than 0.03 volt of reference voltage, and is every through R
6When the voltage of sampling is lower than 0.03 volt, namely work as IC
23 pin voltages during greater than 2 pin voltage, make IC
21 pin be output as high level, IC
2The voltage of 1 pin through R
8To BG
1Base stage b power supply makes BG
1Conducting work is connected on BG
1The DJ of collector electrode c
2DJ is cut off in the energising adhesive
2Inner normal contact point DJ
2-1, equal to have cut off DJ
1Self-locking voltage, make DJ
1Outage discharges, and cuts off DJ
1Inner normally opened contact flows into circuit without 220 volts of alternating currents, realized charging finish after automatic cut-out charger working power and protector self working power.
Compared with prior art, the beneficial effect that possesses of the utility model:
1. volume is little, and is easy to use;
2. can accurately detect battery by fully charged the 1st time, then automatically cut off working power and self working power of charger, prevent that effectively the charger heating from burning out and the over-charging of battery phenomenon.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is circuit structure frame diagram of the present utility model.
Fig. 3 is circuit theory diagrams of the present utility model.
Reference numeral:
Among Fig. 1,1-housing, 2-mains switch, 3-line hole, 4-200V AC Power supply socket, 5-charge power supply socket, 6-relay indicating light;
Among Fig. 3, R represents resistance, and C represents electric capacity, and B represents power transformer, and D represents diode, and BX represents fuse, and AN represents push-button switch, and BG represents triode, and DJ represents relay, and IC represents integrated circuit, and CH represents plug or socket, and LED represents light-emitting diode.Wherein, CH
1220 volts of AC power input plugs, CH
2, CH
3Be 220 volts of AC Power supply socket, this power supply is supplied with former car charger and is used, CH
4And CH
5Be the charging voltage input socket, connect the charging voltage output line of former car charger, CH
4Negative line, CH
5Electrode line, CH
6And CH
7Be the charging voltage output plug, connect the electromobile battery charging socket, CH
6Electrode line, CH
7Negative line, D
3Effect be to eliminate DJ
2The inverse peak voltage that the coil two ends produce, D
1And D
2Effect be that alternating voltage is become direct voltage, D
4Effect be 0.7 volt of voltage of clamper, IC
1Model be NE555, IC
2Model be LM358 or LM39.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment 1:
As shown in drawings, an electric vehicle charge protector comprises housing and internal circuit board, and wherein, described internal circuit board is provided with pushbutton enable circuit, AC transformation current rectifying and wave filtering circuit and voltage ratio and detects control circuit; Described AC transformation current rectifying and wave filtering circuit detects control circuit with pushbutton enable circuit, voltage ratio respectively and is connected.
Also be provided with the time-delay power supply circuits on the described internal circuit board, the input of described time-delay power supply circuits is connected with the AC transformation current rectifying and wave filtering circuit, and output detects control circuit with voltage ratio and is connected.
Described voltage ratio detects control circuit by integrated circuit (IC)
2, diode D
3, D
4, triode BG
1, relay DJ
2, resistance R
3, R
4, R
5, R
6, R
7, R
8Form; Described IC
2Pin 1 pass through R
8With BG
1Base stage b be connected pin 2 and R
6Be connected, pin 3 respectively with R
4, R
5Connect, pin 4 ground connection, pin 8 is connected with the time-delay power supply circuits; DJ
2With D
3Parallel connection, their end is connected with the AC transformation current rectifying and wave filtering circuit, the other end and BG
1Collector electrode c be connected; BG
1Emitter e ground connection; Described time-delay power supply circuits are by integrated circuit (IC)
1, resistance R
2, capacitor C
2Form; Described IC
1Pin 1 ground connection, pin 3 detects control circuit with voltage ratio and is connected, pin 2,6 and R
2, C
2The series connection end be connected, pin 4,8 with being connected of AC transformation current rectifying and wave filtering circuit; Described AC transformation current rectifying and wave filtering circuit is by power transformer B
1, diode D
1, D
2, capacitor C
1Form described D
1, D
2Be connected in power transformer B in parallel
1Coil L
2Two ends, C
1With B
1In parallel; Described pushbutton enable circuit is by plug CH
1, fuse BX
1, push-button switch AN
1, relay DJ
1, DJ
1-1, DJ
2-1Form; Described AN
1, DJ
1-1Parallel connection, an end and BX
1Connect, the other end is connected with the AC transformation current rectifying and wave filtering circuit; DJ
1, DJ
2-1After the series connection and the power transformer B of AC transformation current rectifying and wave filtering circuit
1Coil L
1In parallel.
Described housing 1 is provided with mains switch 2, line hole 3,220V AC Power supply socket 4 and charge power supply socket 5; Described mains switch 2,220V AC Power supply socket 4, charge power supply socket 5 are connected with corresponding circuit on the internal circuit board respectively.
Embodiment 2:
The difference of present embodiment and embodiment 1 is: also be provided with working indicating on the described internal circuit board, described working indicating is connected between AC transformation current rectifying and wave filtering circuit and the time-delay power supply circuits; Described working indicating is by LED
1, R
1Form described LED
1, R
1Be connected in series.
Claims (9)
1. an electric vehicle charge protector comprises housing (1) and internal circuit board, it is characterized in that: described internal circuit board is provided with pushbutton enable circuit, AC transformation current rectifying and wave filtering circuit and voltage ratio and detects control circuit; Described AC transformation current rectifying and wave filtering circuit detects control circuit with pushbutton enable circuit, voltage ratio respectively and is connected.
2. described electric vehicle charge protector according to claim 1; it is characterized in that: also be provided with the time-delay power supply circuits on the described internal circuit board; the input of described time-delay power supply circuits is connected with the AC transformation current rectifying and wave filtering circuit, and output detects control circuit with voltage ratio and is connected.
3. arbitrary described electric vehicle charge protector according to claim 1 and 2, it is characterized in that: also be provided with working indicating on the described internal circuit board, described working indicating is connected between AC transformation current rectifying and wave filtering circuit and the time-delay power supply circuits.
4. arbitrary described electric vehicle charge protector according to claim 1 and 2, it is characterized in that: described voltage ratio detects control circuit by integrated circuit (IC)
2, diode D
3, D
4, triode BG
1, relay DJ
2, resistance R
3, R
4, R
5, R
6, R
7, R
8Form; Described IC
2Pin 1 pass through R
8With BG
1Base stage b be connected pin 2 and R
6Be connected, pin 3 respectively with R
4, R
5Connect, pin 4 ground connection, pin 8 is connected with the time-delay power supply circuits; DJ
2With D
3Parallel connection, their end is connected with the AC transformation current rectifying and wave filtering circuit, the other end and BG
1Collector electrode c be connected; BG
1Emitter e ground connection.
5. arbitrary described electric vehicle charge protector according to claim 1 and 2, it is characterized in that: described AC transformation current rectifying and wave filtering circuit is by power transformer B
1, diode D
1, D
2, capacitor C
1Form described D
1, D
2Be connected in power transformer B in parallel
1Coil L
2Two ends, C
1With B
1In parallel.
6. arbitrary described electric vehicle charge protector according to claim 1 and 2, it is characterized in that: described pushbutton enable circuit is by plug CH
1, fuse BX
1, push-button switch AN
1, relay DJ
1, DJ
1-1, DJ
2-1Form; Described AN
1, DJ
1-1Parallel connection, an end and BX
1Connect, the other end is connected with the AC transformation current rectifying and wave filtering circuit; DJ
1, DJ
2-1After the series connection and the power transformer B of AC transformation current rectifying and wave filtering circuit
1Coil L
1In parallel.
7. described electric vehicle charge protector according to claim 2, it is characterized in that: described time-delay power supply circuits are by integrated circuit (IC)
1, resistance R
2, capacitor C
2Form; Described IC
1Pin 1 ground connection, pin 3 detects control circuit with voltage ratio and is connected, pin 2,6 and R
2, C
2The series connection end be connected, pin 4,8 with being connected of AC transformation current rectifying and wave filtering circuit.
8. described electric vehicle charge protector according to claim 3, it is characterized in that: described working indicating is by LED
1, R
1Form described LED
1, R
1Be connected in series.
9. electric vehicle charge protector according to claim 8, it is characterized in that: described housing (1) is provided with mains switch (2), line hole (3), 220V AC Power supply socket (4), charge power supply socket (5) and relay indicating light (6); Described mains switch (2), 220V AC Power supply socket (4), charge power supply socket (5) and relay indicating light (6) are connected with corresponding circuit on the internal circuit board respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205512905U CN202888925U (en) | 2012-10-25 | 2012-10-25 | Charging protector for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205512905U CN202888925U (en) | 2012-10-25 | 2012-10-25 | Charging protector for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202888925U true CN202888925U (en) | 2013-04-17 |
Family
ID=48080315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205512905U Expired - Fee Related CN202888925U (en) | 2012-10-25 | 2012-10-25 | Charging protector for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202888925U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606717A (en) * | 2013-12-04 | 2014-02-26 | 东莞市东颂电子有限公司 | Anti-electric shock charging method and detection adapter with floating voltage detection function |
| CN107872091A (en) * | 2017-12-11 | 2018-04-03 | 大唐湘潭发电有限责任公司 | A kind of electric car automatically time-delay power-off charging device |
| CN116365902A (en) * | 2023-05-29 | 2023-06-30 | 深圳市英能达电子有限公司 | Switching power supply circuit topology |
-
2012
- 2012-10-25 CN CN2012205512905U patent/CN202888925U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606717A (en) * | 2013-12-04 | 2014-02-26 | 东莞市东颂电子有限公司 | Anti-electric shock charging method and detection adapter with floating voltage detection function |
| CN107872091A (en) * | 2017-12-11 | 2018-04-03 | 大唐湘潭发电有限责任公司 | A kind of electric car automatically time-delay power-off charging device |
| CN107872091B (en) * | 2017-12-11 | 2024-04-12 | 大唐湘潭发电有限责任公司 | Automatic time-delay power-off charging device of electric vehicle |
| CN116365902A (en) * | 2023-05-29 | 2023-06-30 | 深圳市英能达电子有限公司 | Switching power supply circuit topology |
| CN116365902B (en) * | 2023-05-29 | 2023-08-11 | 深圳市英能达电子有限公司 | Switching power supply circuit topology |
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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 |
Granted publication date: 20130417 Termination date: 20141025 |
|
| EXPY | Termination of patent right or utility model |