CN202125390U - Overvoltage protection circuit for engine - Google Patents
Overvoltage protection circuit for engine Download PDFInfo
- Publication number
- CN202125390U CN202125390U CN2011201592380U CN201120159238U CN202125390U CN 202125390 U CN202125390 U CN 202125390U CN 2011201592380 U CN2011201592380 U CN 2011201592380U CN 201120159238 U CN201120159238 U CN 201120159238U CN 202125390 U CN202125390 U CN 202125390U
- Authority
- CN
- China
- Prior art keywords
- generator
- storage battery
- total magnetic
- switch
- magnetic switch
- 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 - Lifetime
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Abstract
The utility model discloses an overvoltage protection circuit for an engine capable of preventing instability of a power supply system caused by electric circuit breakdown and wrong operation of a power supply switch at the same time, which comprises the power supply switch, a main solenoid switch, a storage battery, a power generator and a self-lock relay; anode of the storage battery is connected with that of the power supply through a normally opened contact group of the main solenoid switch, and is connected with control end of the main solenoid switch and normally opened contact of the self-lock relay through the power supply switch; the control end of the self-lock relay is connected with neutral line of the power generator; positive output end of the power generator and slide contact of the self-lock relay are connected with the anode of the power supply; grounded ends of the storage battery, the main solenoid switch, the power generator and the self-lock relay are all connected with cathode of the power supply. The overvoltage protection circuit can be separately used and also can be combined for use as a part of starting circuit of the engine.
Description
Technical field
The utility model relates to the motor of automobile, refers more particularly to the overvoltage crowbar of motor.
Background technique
Modern bus motor automatically controlled Europe III, the Europe IV motors of adopting more; Core component ECU (Engine Control Unit) as control unit of engine is relatively more responsive to the voltage functuation of car load power-supply system; When higher fluctuation surge voltage appears in the car load power-supply system; Very easily puncture the electronic unit among the ECU, cause the ECU fault, thereby influenced the safe and reliable operation of motor.
In the conventional vehicles Electrical Appliances Designing, a lot of producers have designed the anti-misoperation snap close with the power supply rocker switch, and the powered-down switch could be operated after need pressing snap close.Adopt this kind power switch only can prevent some rudimentary misoperations of driver, can not prevent the phenomenons such as power-supply system instability that break down and cause because of circuit on one's own initiative; And the range of choice of this anti-misoperation snap close power supply rocker switch is narrower, is unfavorable for the update of vehicle.
The model utility content
The utility model technical problem to be solved is: a kind of overvoltage crowbar that can prevent to cause because of misoperation power switch and fault the unsettled motor of power-supply system simultaneously is provided.
In order to solve the problems of the technologies described above; The technological scheme that the utility model adopted is: the overvoltage crowbar of motor; Comprise: power switch, total magnetic switch, storage battery, generator and latching relay; The positive pole of storage battery links to each other with positive source through the normally opened contact group of total magnetic switch; The positive pole of storage battery links to each other with the control end of total magnetic switch and the normally opened contact of latching relay through power switch; The control end of latching relay links to each other with the neutral line of generator, and the contact of stirring of the forward output terminal of generator, latching relay links to each other with positive source, and storage battery, total magnetic switch, generator all link to each other with power cathode with latching relay grounding end separately.
The corresponding contacts of the normally opened contact group of said total magnetic switch links to each other with positive source through being prone to fuse; The forward output terminal of said generator links to each other with positive source through being prone to fuse.
Also be provided with easy fuse between the positive pole of said storage battery and the power switch.
The forward output terminal of said generator links to each other with the positive pole of storage battery through the normally opened contact group of total magnetic switch.
Be serially connected with a pair of easy fuse between the normally opened contact group of the forward output terminal of said generator and total magnetic switch.
Described total magnetic switch is the direct solenoid contactor.
The beneficial effect of the utility model is: the utility model after the vehicle motor running, utilizes generator neutral line N to bring out owing to increased latching relay; The work of drive latching relay; Control end power supply to total magnetic switch realizes the self-locking of total magnetic switch control circuit, makes the forward output terminal of generator link to each other with the positive pole of storage battery all the time; Thereby after having avoided engine running; Make car load power-supply system moment produce overvoltage surge because of power switch misoperation or fault cut off the storage battery main power circuit, puncture the vehicle electronics element, cause vehicle trouble.In addition, selecting for use of power switch is unrestricted, helps the update of vehicle.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 2, power switch, 6, total magnetic switch, 7, latching relay, 9, storage battery, 10, generator, 11, be prone to fuse, 12, be prone to fuse, 13, be prone to fuse, 14, be prone to fuse, 15, be prone to fuse.
Embodiment
Below in conjunction with accompanying drawing, describe the specific embodiments of the utility model in detail.
As shown in Figure 1; The starting circuit of the said motor of the utility model; Comprise: power switch 2, total magnetic switch 6, storage battery 9, generator 10 and latching relay 7; The positive pole of storage battery 9 links to each other with the normally opened contact of the normally opened contact group of total magnetic switch 6, and the contact of stirring of this normally opened contact group links to each other with positive source through being prone to fuse 11; The positive pole of storage battery 9 links to each other with the control end of total magnetic switch 6 and the normally opened contact of latching relay 7 through power switch 2; The control end of latching relay 7 links to each other with the neutral line (the centre cap N end of generator armature) of generator 10; The contact of stirring of latching relay 7 links to each other with positive source; The forward output terminal B+ of generator 10 links to each other with positive source through being prone to fuse 12; Storage battery 9, total magnetic switch 6, generator 10, latching relay 7 grounding end separately all link to each other with power cathode, all are to link to each other through bonding usually; In the present embodiment, be provided with easy fuse 15 between the positive pole of said storage battery 9 and the power switch 2; Between the forward output terminal B+ of said generator 10 and the normally opened contact group of total magnetic switch 6 except the connecting line through positive source links to each other; Also be provided with special-purpose charging circuit; That is: the forward output terminal B+ of generator 10 links to each other with another root special wire with the contact of stirring of the normally opened contact group of total magnetic switch 6; And; Stirring of the normally opened contact group of one end of this special wire and total magnetic switch 6 is provided with easy fuse 13 between the contact, be serially connected with between the forward output terminal B+ of the other end of this special wire and generator 10 to be prone to fuse 14; Described total magnetic switch 6 is the direct solenoid contactor.
The working procedure of the utility model is: in the vehicle operating process; Generator 10 neutral line N bring out the control end that electricity is given latching relay 7, drive latching relay 7 work, to the control end power supply of total magnetic switch 6; Realize the self-locking of total magnetic switch 6 control circuits; That is: the normally opened contact group of total magnetic switch 6 is in closed state always, makes the forward output terminal B+ of generator 10 be in connected state with the positive pole of storage battery 9 all the time, and storage battery 9 directly can absorb some the unsettled surge voltages in the power-supply system; Guarantee the stable of car load power-supply system, the finished vehicle electronic element has been played the effect of voltage-stabilizing protection.
Claims (6)
1. the overvoltage crowbar of motor; Comprise: power switch (2), total magnetic switch (6), storage battery (9) and generator (10); It is characterized in that; Also include: latching relay (7); The positive pole of storage battery (9) links to each other with positive source through the normally opened contact group of total magnetic switch (6), and the positive pole of storage battery (9) links to each other with the control end of total magnetic switch (6) and the normally opened contact of latching relay (7) through power switch (2), and the control end of latching relay (7) links to each other with the neutral line of generator (10); The contact of stirring of the forward output terminal of generator (10), latching relay (7) links to each other with positive source, and storage battery (9), total magnetic switch (6), generator (10) all link to each other with power cathode with latching relay (7) grounding end separately.
2. overvoltage crowbar according to claim 1 is characterized in that: the corresponding contacts of the normally opened contact group of said total magnetic switch (6) links to each other with positive source through being prone to fuse (11); The forward output terminal of said generator (10) links to each other with positive source through being prone to fuse (12).
3. overvoltage crowbar according to claim 1 is characterized in that: also be provided with easy fuse (15) between the positive pole of said storage battery (9) and the power switch (2).
4. overvoltage crowbar according to claim 1 is characterized in that: the forward output terminal of said generator (10) links to each other with the positive pole of storage battery (9) through the normally opened contact group of total magnetic switch (6).
5. overvoltage crowbar according to claim 3 is characterized in that: be serially connected with a pair of easy fuse (13,14) between the normally opened contact group of the forward output terminal of said generator (10) and total magnetic switch (6).
6. according to each described overvoltage crowbar in the claim 1 to 5, it is characterized in that: described total magnetic switch (6) is the direct solenoid contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201592380U CN202125390U (en) | 2011-05-18 | 2011-05-18 | Overvoltage protection circuit for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201592380U CN202125390U (en) | 2011-05-18 | 2011-05-18 | Overvoltage protection circuit for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202125390U true CN202125390U (en) | 2012-01-25 |
Family
ID=45488460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201592380U Expired - Lifetime CN202125390U (en) | 2011-05-18 | 2011-05-18 | Overvoltage protection circuit for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202125390U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157927A (en) * | 2011-05-18 | 2011-08-17 | 江苏友谊汽车有限公司 | Overvoltage protection circuit of engine |
| CN103670867A (en) * | 2014-01-08 | 2014-03-26 | 山东润峰汽车车身制造有限公司 | Engine starting circuit |
| CN103742328A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Method for protecting engine starting motor |
-
2011
- 2011-05-18 CN CN2011201592380U patent/CN202125390U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157927A (en) * | 2011-05-18 | 2011-08-17 | 江苏友谊汽车有限公司 | Overvoltage protection circuit of engine |
| CN102157927B (en) * | 2011-05-18 | 2012-12-26 | 江苏友谊汽车有限公司 | Overvoltage protection circuit of engine |
| CN103742328A (en) * | 2013-12-26 | 2014-04-23 | 柳州正菱集团有限公司 | Method for protecting engine starting motor |
| CN103670867A (en) * | 2014-01-08 | 2014-03-26 | 山东润峰汽车车身制造有限公司 | Engine starting circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120125 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |