CN201515259U - Pre-charging control circuit - Google Patents
Pre-charging control circuit Download PDFInfo
- Publication number
- CN201515259U CN201515259U CN2009203083852U CN200920308385U CN201515259U CN 201515259 U CN201515259 U CN 201515259U CN 2009203083852 U CN2009203083852 U CN 2009203083852U CN 200920308385 U CN200920308385 U CN 200920308385U CN 201515259 U CN201515259 U CN 201515259U
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- Prior art keywords
- relay
- solenoid
- main
- loop
- charge
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a pre-charging control circuit which comprises a main charging circuit, a control circuit used for the main charging circuit, a pre-charging circuit and a control circuit used for the pre-charging circuit, wherein the main charging circuit is a circuit formed by connecting the normally open contact of a main relay with the input capacitor of electrical equipment in series, the main charging circuit comprises the electromagnetic coil of the main relay, the two ends of the electromagnetic coil are connected with one end of the normally open contact of a self-latching relay and the shared terminal of the normally open contact and the normally closed contact of a detection relay respectively, both the other end of the normally open contact of the detection relay and one end of the electromagnetic coil of the self-latching relay are connected with the other end of the electromagnetic coil of a pre-charging relay, and the other end of the electromagnetic coil of the self-latching relay is connected with one end of the electromagnetic coil of the main relay. The pre-charging control circuit is applied to solve the problem of the prior art that the main charging circuit is directly switched on when the pre-charging circuit is opened or the load is in short circuit.
Description
Technical field
The utility model relates to a kind of precharge control circuit, belongs to electronic technology field.
Background technology
Raising along with the electrokinetic cell capacity, powerful direct-flow electricity utilization apparatus is more and more, large bulk capacitance is generally all arranged in the power consumption equipment, connect moment because voltage difference than the very big surge current of conference formation, causes device damage or reduces useful life at main circuit.At present generally use independent precharge switch series limiting resistor control, finish, but this way lost efficacy under precharge loop open circuit or load short circuits situation, potential safety hazard was arranged by acquiescence precharge after the certain time-delay.
The utility model content
The purpose of this utility model provides a kind ofly can control the precharge control circuit that main charge circuit is disconnected when precharge loop open circuit or load short circuits, with solving the available circuit problem that master's charge circuit is directly connected when precharge loop open circuit or the load short circuits.
For achieving the above object, the utility model adopts following technical scheme: a kind of precharge control circuit, this circuit comprises a main charge circuit and control loop thereof and precharge loop and control loop thereof, the output in described main charge circuit and precharge loop all is connected to the two ends of power consumption equipment input capacitance, described precharge loop is a normally open contact of pre-charge-relay, a current-limiting resistance, the loop that the solenoid of a detection relay and the series connection of power consumption equipment input capacitance constitute, described precharge control loop is made of the solenoid of a pre-charge-relay that is used to be attempted by the control both ends of power, described main charge circuit is a normally open contact of main relay and the loop that the series connection of above-mentioned power consumption equipment input capacitance constitutes, described main charging control loop comprises the solenoid of main relay, the two ends of this solenoid diode in parallel, one end of described main relay solenoid is connected with normally open contact one end of a latching relay, often opening of the other end of main relay solenoid and a detection relay, the common port of normally closed interlock connects, the other end of the other end of described detection relay normally open contact and described latching relay normally open contact connects an end of pre-charge-relay solenoid together, the other end of described detection relay normally closed interlock and an end of latching relay solenoid connect the other end of pre-charge-relay solenoid together, and the other end of described latching relay solenoid is connected with an end of main relay solenoid.
The two ends of described detection electromagnetic coil relay are parallel with a voltage stabilizing didoe.
The two ends of described pre-charge-relay solenoid and latching relay solenoid two ends are parallel with diode respectively.
The beneficial effects of the utility model are: precharge control circuit described in the utility model; the not adhesive of detection relay in the control loop when open a way in the precharge loop because the master charges; the two ends of controlling the solenoid of normally open contact in the main charge circuit are connected with the negative pole of control power supply simultaneously; there is not electric current to flow through solenoid; not adhesive of normally open contact in the main charge circuit; the not conducting of main charge circuit; with should load short circuits the time because the detection relay adhesive always in the main charging control loop; the two ends of controlling the solenoid of normally open contact in the main charge circuit are connected with the positive pole of control power supply simultaneously; there is not electric current to flow through solenoid; not adhesive of normally open contact in the main charge circuit; the also not conducting of main charge circuit; realize the surge rush of current can be prevented equally in the precharge loop when open circuit or load short circuits purpose, played the effect of protection equipment.
The voltage stabilizing didoe that detects the parallel connection of electromagnetic coil relay two ends in addition can not only be protected the effect that detects that relay coil is not subjected to superpotential impact and play afterflow when cutting off the power supply in the precharge loop.
Described pre-charge-relay solenoid two ends diode connected in parallel and latching relay solenoid two ends diode connected in parallel mainly play the afterflow effect, guarantee that pre-charge-relay and latching relay are unaffected useful life.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
In conjunction with Fig. 1 a kind of precharge control circuit described in the utility model is described, this circuit comprises a precharge loop and control loop thereof and main charge circuit and control loop thereof, the input in described main charge circuit input and precharge loop all is connected to the two ends of charge power supply BT1, the input of described main charging control loop input and precharge control loop all is connected to the two ends of control power supply BT2, described precharge loop is the normally open contact of pre-charge-relay K2, a current-limiting resistance R1, a solenoid and the loop that power consumption equipment input capacitance C1 series connection constitutes of detecting relay K 3, the two ends of the solenoid of described detection relay K 3 are parallel with a voltage stabilizing didoe D3, described precharge control loop is made of the solenoid series connection of a control switch S1 and pre-charge-relay K2, described main charge circuit is the normally open contact of main relay K1 and the loop that power consumption equipment input capacitance C1 series connection constitutes, described main charging control loop comprises the solenoid of main relay K1, one end of described main relay K1 solenoid (pin 4) is connected with normally open contact one end (pin 4) of a latching relay K4, the other end of main relay K1 solenoid (pin 3) is often opened with detection relay K 3, the common port of normally closed interlock (pin 1) connects, the other end (pin 1) of the normally open contact of the other end of the normally open contact of described detection relay K 3 (pin 3) and described latching relay K4 connects an end (pin 3) of pre-charge-relay K2 solenoid together, one end (pin 3) of the other end of described detection relay K 3 normally closed interlocks (pin 2) and latching relay K4 solenoid connects the other end (pin 4) of pre-charge-relay K2 solenoid together, the other end of described latching relay K4 solenoid (pin 4) is connected the two ends of described main relay K1 solenoid with an end (pin 3) of main relay K1 solenoid, the solenoid two ends of the two ends of pre-charge-relay K2 solenoid and latching relay K4 are parallel with diode D1 respectively, diode D2, diode D4.
The operation principle of a kind of precharge control circuit described in the utility model is: closed control switch S1, the solenoid energising of pre-charge-relay K2, the normally open contact adhesive of pre-charge-relay K2 in the precharge loop, electrical source of power BT1 is by resistance R 1, the solenoid that detects relay K 3 is to capacitor C 1 precharge, detect the normally open contact adhesive of relay K 3 simultaneously, control power supply BT2 is the solenoid energising of latching relay K4 by diode D1, normally open contact adhesive and the self-locking of latching relay K4, in pre-charge process, because the two ends of main relay K1 solenoid all are communicated with the positive pole of control power supply BT2, there is not electric current to pass through, main charge circuit keeps the state of disconnection, rising along with capacitance voltage, pre-charge current reduces gradually, be reduced to following the prescribing a time limit of detection relay K 3 coil adhesives when pre-charge current, detect the normally open contact disconnection that relay K 3 is connected, normally closed interlock is connected, this moment main relay K1 solenoid two ends and the two ends of receiving control power supply BT2, the energising of main relay K1 solenoid, the normally open contact closure of main relay K1 in the main charge circuit, electrical source of power BT1 begins by main charge circuit power supply; When open a way in the precharge loop, detection relay K 3 not adhesives of normally open contact in the main charging control loop, the two ends of main relay K1 solenoid are connected with the negative pole of control power supply BT2 simultaneously, there is not electric current to flow through solenoid, not adhesive of main relay K1 normally open contact in the main charge circuit, the not conducting of main charge circuit, be in the adhesive conducting state owing to flow through the normally open contact that detection relay K 3 solenoid current in the precharge control loop keep detecting relay K 3 always with should load short circuits the time, the two ends of main relay K1 solenoid are connected with the positive pole of control power supply BT2 simultaneously, there is not electric current to flow through solenoid, the not adhesive of normally open contact of main relay K1 in the main charge circuit, the also not conducting of main charge circuit.
Claims (3)
1. precharge control circuit, it is characterized in that: this circuit comprises a main charge circuit and control loop thereof and precharge loop and control loop thereof, the output in described main charge circuit and precharge loop all is connected to the two ends of power consumption equipment input capacitance, described precharge loop is a normally open contact of pre-charge-relay, a current-limiting resistance, the loop that the solenoid of a detection relay and the series connection of power consumption equipment input capacitance constitute, described precharge control loop is made of the solenoid of a pre-charge-relay that is used to be attempted by the control both ends of power, described main charge circuit is a normally open contact of main relay and the loop that the series connection of above-mentioned power consumption equipment input capacitance constitutes, described main charging control loop comprises the solenoid of main relay, the two ends of this solenoid diode in parallel, one end of described main relay solenoid is connected with normally open contact one end of a latching relay, often opening of the other end of main relay solenoid and a detection relay, the common port of normally closed interlock connects, the other end of the other end of described detection relay normally open contact and described latching relay normally open contact connects an end of pre-charge-relay solenoid together, the other end of described detection relay normally closed interlock and an end of latching relay solenoid connect the other end of pre-charge-relay solenoid together, and the other end of described latching relay solenoid is connected with an end of main relay solenoid.
2. precharge control circuit according to claim 1 is characterized in that: the two ends of described detection electromagnetic coil relay are parallel with a voltage stabilizing didoe.
3. precharge control circuit according to claim 1 and 2 is characterized in that: the two ends of described pre-charge-relay solenoid and latching relay solenoid two ends are parallel with diode respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203083852U CN201515259U (en) | 2009-08-19 | 2009-08-19 | Pre-charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203083852U CN201515259U (en) | 2009-08-19 | 2009-08-19 | Pre-charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201515259U true CN201515259U (en) | 2010-06-23 |
Family
ID=42486670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203083852U Expired - Fee Related CN201515259U (en) | 2009-08-19 | 2009-08-19 | Pre-charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201515259U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048938A (en) * | 2012-12-28 | 2013-04-17 | 天津市松正电动汽车技术股份有限公司 | Pre-charging system with parallel connection type relay |
| CN110022053A (en) * | 2019-03-29 | 2019-07-16 | 合肥华耀电子工业有限公司 | It is a kind of to inhibit the three phase rectifier of function to protect circuit with inrush current |
| CN114211991A (en) * | 2021-12-15 | 2022-03-22 | 沃飞长空科技(成都)有限公司 | Control unit for wireless charging unmanned aerial vehicle, unmanned aerial vehicle and control method |
-
2009
- 2009-08-19 CN CN2009203083852U patent/CN201515259U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048938A (en) * | 2012-12-28 | 2013-04-17 | 天津市松正电动汽车技术股份有限公司 | Pre-charging system with parallel connection type relay |
| CN110022053A (en) * | 2019-03-29 | 2019-07-16 | 合肥华耀电子工业有限公司 | It is a kind of to inhibit the three phase rectifier of function to protect circuit with inrush current |
| CN110022053B (en) * | 2019-03-29 | 2024-03-29 | 合肥华耀电子工业有限公司 | Three-phase rectification protection circuit with input surge current suppression function |
| CN114211991A (en) * | 2021-12-15 | 2022-03-22 | 沃飞长空科技(成都)有限公司 | Control unit for wireless charging unmanned aerial vehicle, unmanned aerial vehicle and control method |
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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: 20100623 Termination date: 20170819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |