CN201349141Y - Safe device for output of electric motor car charger - Google Patents
Safe device for output of electric motor car charger Download PDFInfo
- Publication number
- CN201349141Y CN201349141Y CNU2009200376387U CN200920037638U CN201349141Y CN 201349141 Y CN201349141 Y CN 201349141Y CN U2009200376387 U CNU2009200376387 U CN U2009200376387U CN 200920037638 U CN200920037638 U CN 200920037638U CN 201349141 Y CN201349141 Y CN 201349141Y
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- output
- charger
- controllable silicon
- negative pole
- trigger electrode
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Abstract
A safe device for the output of an electric motor car charger adopts the controllable silicon technique in negative pole output or positive pole output loops of a charger and ensures that the voltage at the output end of the charger meets the regulations in the country and industry standards for safety extra-low voltage (SELV). Once the storage battery is connected, elements, such as three electrode tubes, CUPs, optical couplers and the like are used for driving the trigger electrode of the controllable silicon, that is, immediate charging can be performed on the storage battery; and besides, even the positive and the negative poles are connected wrongly by a user, no harm can be done on the charger and the storage battery.
Description
Affiliated technical field
The utility model relates to a kind of electric car charger output safety device, be mainly used in the lead-out terminal of electric car charger, the charger output voltage is lower than the safe voltage of standard code in the time of can realizing zero load, and can prevent that the accumulator terminal reversal connection from causing damage to charger and storage battery.
Background technology
According to stipulating in " the safe part 1 of GB 4706.1-2005 family expenses and similar applications electrical equipment: general requirement " standard: safety extra low voltage is meant-lead between and the voltage that is no more than 42V between lead and the ground.Stipulate in " QB/T 2947.1-2008 electric bicycle battery and charger part 1: sealed lead acid storage battery and charger " standard: unloaded VD should be no more than 42.4V.When nominal battery voltage at 36V and following, the output voltage of charger generally all is no more than the safety extra low voltage of above-mentioned standard, we know that the nominal voltage that the considerable part electromobile battery is arranged at present is 48V, 60V.The output voltage of charger must exceed the safety extra low voltage of standard code like this.Past since people to the deficiency of Electrical Safety understanding, existing electric car charger does not all adopt effective safeguard procedures for what output surpassed safety extra low voltage, under some certain conditions, still may cause injury to the people like this.On the other hand, in case the polarity of existing charger storage battery connects instead, will cause the damage of charger and storage battery.
Summary of the invention
In order to follow the requirement of national standard to safe voltage, the utility model provides a kind of electric car charger output safety device, can realize that charger output end voltage when zero load satisfies country and the industry standard regulation to safety extra low voltage, in case after connecting storage battery, can be immediately to charge in batteries, even the polarity of storage battery connects instead, also can not cause the damage of charger and storage battery.
The technical scheme that its technical problem that solves the utility model adopts is:
Serial connection controllable silicon in the negative pole output loop, controllable silicon is anodal to link with output negative pole, controllable silicon negative pole and charger negative pole link, controllable silicon trigger electrode and charger positive pole link, between controllable silicon trigger electrode and charger negative pole and a NPN triode arranged, transistor base links by a voltage-stabiliser tube and output negative pole, sampling resistor of series connection between the output positive and negative electrode; The controllable silicon trigger electrode also can link by a PNP triode and charger positive pole, and transistor base links by a diode and output negative pole; The controllable silicon trigger electrode can also link by optocoupler output and charger positive pole, is connected in parallel between the output positive and negative electrode behind diode of optocoupler input series connection; The controllable silicon trigger electrode can also link with the cpu signal output, and cpu signal input and output negative pole link.
Serial connection controllable silicon in anodal output loop, controllable silicon is anodal to link with the charger positive pole, and controllable silicon negative pole and output cathode link, and the controllable silicon trigger electrode links by another high voltage power supply in optocoupler output and the charger; The controllable silicon trigger electrode can also link by another high voltage power supply in a PNP triode and the charger, and the PNP transistor base links by a NPN triode and output negative pole, and the NPN transistor base links by a voltage-stabiliser tube and output cathode.
Serial connection controllable silicon in the negative pole output loop, the controllable silicon trigger electrode links by another low voltage power supply in control circuit and the charger.
The beneficial effects of the utility model are: owing to adopted serial connection controllable silicon technology in charger negative pole output (or anodal output) loop, guarantee that charger output end voltage when zero load satisfies country and the industry standard regulation to safety extra low voltage, on the other hand, even the user has connect the storage battery positive and negative electrode instead, can not cause any harm to charger and storage battery.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is connected to anodal electrical connection schematic diagram by the NPN triode;
Fig. 2 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is connected to anodal electrical connection schematic diagram by the PNP triode;
Fig. 3 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is connected to anodal electrical connection schematic diagram by optocoupler;
Fig. 4 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is by the electrical connection schematic diagram of CPU control;
Fig. 5 is a serial connection controllable silicon in the anodal loop of charger, and the controllable silicon trigger electrode is connected to the electrical connection schematic diagram in high voltage source by optocoupler;
Fig. 6 is a serial connection controllable silicon in the anodal loop of charger,, the controllable silicon trigger electrode is connected to the electrical connection schematic diagram in high voltage source by the PNP triode;
Fig. 7 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is connected to the electrical connection schematic diagram of lower voltage source by the NPN triode;
Fig. 8 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is connected to the electrical connection schematic diagram of lower voltage source by the PNP triode;
Fig. 9 is a serial connection controllable silicon in the charger negative loop, and the controllable silicon trigger electrode is connected to the electrical connection schematic diagram of lower voltage source by optocoupler.
In the drawings, (1) is the charger positive pole, and (2) are the charger negative poles, (3) be output cathode, (4) are output negative poles, and (5) are the high voltage sources, (6) be lower voltage source, (7) are controllable silicons, and (8) are the NPN triodes, (9) be the PNP triode, (10) be voltage-stabiliser tube, (11) are diodes, and (12) are optocouplers, (13) be CPU, (14) are sampling resistors.
Embodiment
In Fig. 1, serial connection controllable silicon in charger negative pole (2) loop, when output cathode (3) and output negative pole (4) when not connecing storage battery, by sampling resistor (14), output negative pole (4) is high potential, voltage-stabiliser tube (10) conducting, also conducting thereupon of NPN triode (8), so the trigger electrode current potential of controllable silicon (7) is dragged down, not conducting of controllable silicon (7), the charger output end voltage has satisfied country and the industry standard regulation to safety extra low voltage.
When output cathode (3) and output negative pole (4) connect battery positive voltage and negative pole respectively, output negative pole (4) is electronegative potential, not conducting of voltage-stabiliser tube (10), also not conducting of NPN triode (8), the trigger electrode current potential of controllable silicon (7) is high potential, controllable silicon (7) conducting, charger is to charge in batteries.
When output cathode (3) and output negative pole (4) and accumulator polarity connect inverse time; output negative pole (4) still is high potential; voltage-stabiliser tube (10) conducting; also conducting thereupon of NPN triode (8); so the trigger electrode current potential of controllable silicon (7) is dragged down; not conducting of controllable silicon (7), protection charger and storage battery preserve from.
In Fig. 2, serial connection controllable silicon in charger negative pole (2) loop, when output cathode (3) and output negative pole (4) when not connecing storage battery, by sampling resistor (14), output negative pole (4) is high potential, not conducting of PNP triode (9), the trigger electrode triggerless voltage of controllable silicon (7), country and the industry standard regulation to safety extra low voltage has been satisfied in not conducting of controllable silicon (7), charger output end voltage.
When output cathode (3) and output negative pole (4) connect battery positive voltage and negative pole respectively, output negative pole (4) was electronegative potential, PNP triode (9) conducting, and the trigger electrode of controllable silicon (7) is high potential, controllable silicon (7) conducting, charger is to charge in batteries.
When output cathode (3) and output negative pole (4) and accumulator polarity connect inverse time; output negative pole (4) still is high potential; not conducting of PNP triode (9); the trigger electrode triggerless voltage of controllable silicon (7); not conducting of controllable silicon (7); protection charger and storage battery preserve from, and diode (11) is that PNP triode (9) is shielded.
In Fig. 3, serial connection controllable silicon in charger negative pole (2) loop, when output cathode (3) and output negative pole (4) when not connecing storage battery, optocoupler (12) input no current, optocoupler (12) not conducting of output, the trigger electrode triggerless voltage of controllable silicon (7), not conducting of controllable silicon (7), the charger output end voltage has satisfied country and the industry standard regulation to safety extra low voltage.
When output cathode (3) and output negative pole (4) connect battery positive voltage and negative pole respectively, optocoupler (12) input had electric current, optocoupler (12) output conducting, and the trigger electrode of controllable silicon (7) is high potential, and protection charger and storage battery preserve from.
When output cathode (3) and output negative pole (4) and accumulator polarity connect inverse time; optocoupler (12) input no current; optocoupler (12) not conducting of output; the trigger electrode triggerless voltage of controllable silicon (7); not conducting of controllable silicon (7); protection charger and storage battery preserve from, and diode (11) is that optocoupler (12) is shielded.
In Fig. 4, serial connection controllable silicon in charger negative pole (2) loop, when output cathode (3) and output negative pole (4) when not connecing storage battery, by sampling resistor (14), output negative pole (4) is high potential, and CPU (13) input is high potential, and CPU (13) output is not exported triggering signal, country and the industry standard regulation to safety extra low voltage has been satisfied in not conducting of controllable silicon (7), charger output end voltage.
When output cathode (3) and output negative pole (4) connect battery positive voltage and negative pole respectively, output negative pole (4) was electronegative potential, and CPU (13) input is electronegative potential, CPU (13) output output triggering signal, and controllable silicon (7) conducting, charger is to charge in batteries.
When output cathode (3) and output negative pole (4) and accumulator polarity connect inverse time; by sampling resistor (14); output negative pole (4) is high potential; CPU (13) input is high potential; CPU (13) output is not exported triggering signal; not conducting of controllable silicon (7), protection charger and storage battery preserve from.。
In Fig. 5, serial connection controllable silicon in charger positive pole (1) loop, when output cathode (3) and output negative pole (4) when not connecing storage battery, optocoupler (12) input no current, optocoupler (12) not conducting of output, the trigger electrode triggerless voltage of controllable silicon (7), not conducting of controllable silicon (7), the external no-output of charger has satisfied country and the industry standard regulation to safety extra low voltage.
When output cathode (3) and output negative pole (4) connect battery positive voltage and negative pole respectively, optocoupler (12) input has electric current, optocoupler (12) output conducting, the trigger electrode of controllable silicon (7) connects high voltage source (5), the voltage in high voltage source (5) should be higher than charger cathode voltage value, controllable silicon (7) conducting, charger is to charge in batteries.
When output cathode (3) and output negative pole (4) and accumulator polarity connect inverse time; optocoupler (12) input no current; optocoupler (12) not conducting of output; the trigger electrode triggerless voltage of controllable silicon (7); not conducting of controllable silicon (7); protection charger and storage battery preserve from, and diode (11) is that optocoupler (12) is shielded.
In Fig. 6, serial connection controllable silicon in charger positive pole (1) loop, when output cathode (3) and output negative pole (4) when not connecing storage battery, output cathode (3) is electronegative potential, not conducting of voltage-stabiliser tube (10), NPN triode (8) and also not conducting of PNP triode (9), the trigger electrode triggerless voltage of controllable silicon (7), not conducting of controllable silicon (7), the external no-output of charger has satisfied country and the industry standard regulation to safety extra low voltage.
When output cathode (3) and output negative pole (4) connect battery positive voltage and negative pole respectively, output cathode (3) is high potential, voltage-stabiliser tube (10) conducting, NPN triode (8) and also conducting of PNP triode (9), the trigger electrode of controllable silicon (7) is high potential, controllable silicon (7) conducting, charger is to charge in batteries.
When output cathode (3) and output negative pole (4) and accumulator polarity connect inverse time; output cathode (3) is electronegative potential; not conducting of voltage-stabiliser tube (10); NPN triode (8) and also not conducting of PNP triode (9); the trigger electrode triggerless voltage of controllable silicon (7); not conducting of controllable silicon (7), protection charger and storage battery preserve from, and diode (11) is that NPN triode (8) is shielded.
In Fig. 7, the same Fig. 1 of its operation principle, just controllable silicon (7) trigger electrode connects a lower voltage source (6), can reduce the triggering loop power consumption of controllable silicon (7) like this.
In Fig. 8, the same Fig. 2 of its operation principle, just controllable silicon (7) trigger electrode connects a lower voltage source (6), can reduce the triggering loop power consumption of controllable silicon (7) like this.
In Fig. 9, the same Fig. 3 of its operation principle, just controllable silicon (7) trigger electrode connects a lower voltage source (6), can reduce the triggering loop power consumption of controllable silicon (7) like this.
Claims (9)
1 electric car charger output safety device, be placed in the output of electric car charger, it is characterized in that: serial connection controllable silicon (7) in charger negative pole (2) and output negative pole (4) loop, controllable silicon (7) is anodal to link with output negative pole (4), controllable silicon (7) negative pole and charger negative pole (2) link, controllable silicon (7) trigger electrode and charger positive pole (1) link, between controllable silicon (7) trigger electrode and charger negative pole (2) and a NPN triode (8) arranged, transistor base links by a voltage-stabiliser tube (10) and output negative pole (4), the sampling resistor (14) of connecting between output cathode (3) and output negative pole (4).
2 electric car charger output safety devices according to claim 1, it is characterized in that: controllable silicon (7) trigger electrode links by a PNP triode (9) and charger positive pole (1), transistor base links by a diode (11) and output negative pole (4), the sampling resistor (14) of connecting between output cathode (3) and output negative pole (4).
3 electric car charger output safety devices according to claim 1, it is characterized in that: controllable silicon (7) trigger electrode links by optocoupler (12) output and charger positive pole (1), is connected in parallel between output cathode (3) and the output negative pole (4) behind optocoupler (12) the input diode of series connection (11).
4 electric car charger output safety devices according to claim 1, it is characterized in that: controllable silicon (7) trigger electrode and CPU (13) signal output part link, CPU (13) signal input part and output negative pole (4) link, the sampling resistor (14) of connecting between output cathode (3) and output negative pole (4).
5 electric car charger output safety devices according to claim 3, it is characterized in that: serial connection controllable silicon (7) in charger positive pole (1) and output cathode (3) loop, controllable silicon (7) is anodal to link with charger positive pole (1), controllable silicon (7) negative pole and output cathode (3) link, and controllable silicon (7) trigger electrode links by another high voltage power supply (5) in optocoupler (12) output and the charger.
6 electric car charger output safety devices according to claim 5, it is characterized in that: controllable silicon (7) trigger electrode links by interior another high voltage power supply (5) of a PNP triode (9) and charger, PNP triode (9) base stage and a NPN triode (8) series connection back link with output negative pole (4), and NPN triode (8) base stage links by a voltage-stabiliser tube (10) and output cathode (3).
7 electric car charger output safety devices according to claim 1 is characterized in that: another low voltage power supply (6) links in controllable silicon (7) trigger electrode and the charger.
8 electric car charger output safety devices according to claim 2 is characterized in that: controllable silicon (7) trigger electrode links by interior another low voltage power supply (6) of a PNP triode (9) and charger.
9 electric car charger output safety devices according to claim 3 is characterized in that: controllable silicon (7) trigger electrode links by another low voltage power supply (6) in optocoupler (12) output and the charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200376387U CN201349141Y (en) | 2009-01-21 | 2009-01-21 | Safe device for output of electric motor car charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200376387U CN201349141Y (en) | 2009-01-21 | 2009-01-21 | Safe device for output of electric motor car charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201349141Y true CN201349141Y (en) | 2009-11-18 |
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ID=41368606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200376387U Expired - Lifetime CN201349141Y (en) | 2009-01-21 | 2009-01-21 | Safe device for output of electric motor car charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201349141Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593818A (en) * | 2012-02-16 | 2012-07-18 | 北京优科利尔能源设备有限公司 | Circuit for preventing battery from being reversely connected |
| CN104052029A (en) * | 2013-03-15 | 2014-09-17 | 深圳市海洋王照明工程有限公司 | Charger reverse-connection-prevention circuit and electronic device |
-
2009
- 2009-01-21 CN CNU2009200376387U patent/CN201349141Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593818A (en) * | 2012-02-16 | 2012-07-18 | 北京优科利尔能源设备有限公司 | Circuit for preventing battery from being reversely connected |
| CN102593818B (en) * | 2012-02-16 | 2014-10-29 | 北京优科利尔能源设备有限公司 | Circuit for preventing battery from being reversely connected |
| CN104052029A (en) * | 2013-03-15 | 2014-09-17 | 深圳市海洋王照明工程有限公司 | Charger reverse-connection-prevention circuit and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
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| CX01 | Expiry of patent term |