CN207010544U - A kind of contravariant intelligent charging machine Drive Protecting Circuit - Google Patents
A kind of contravariant intelligent charging machine Drive Protecting Circuit Download PDFInfo
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- CN207010544U CN207010544U CN201720312859.5U CN201720312859U CN207010544U CN 207010544 U CN207010544 U CN 207010544U CN 201720312859 U CN201720312859 U CN 201720312859U CN 207010544 U CN207010544 U CN 207010544U
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- switch
- contactor
- contravariant
- blower fan
- power switch
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Abstract
The utility model discloses a kind of contravariant intelligent charging machine Drive Protecting Circuit, including transformer and three contactors；After the coil of first contactor and the first blower fan, the second fan parallel-connection, then connect with the first power switch；After the coil of second contactor and the 3rd fan parallel-connection, then switch and connect with second source；The coil of 3rd contactor is connected with the 3rd power switch；3rd power switch is connected with two output switchs；Two output switch parallel connections；First power switch, first switch, second switch are connected on the first exchange output bus；First blower fan, the second blower fan, the 3rd blower fan, three contactors are connected on the second exchange output bus；First exchange output bus is connected to the first input end of inverter by the contact of first contactor, and the second exchange output bus is connected to the second input of inverter；First switch, second switch are connected with the second filtration module.The utility model solves the problems, such as that contravariant intelligent charging machine inverter is easily burnt out.
Description
Technical field
Drive Protecting Circuit is the utility model is related to, particularly a kind of contravariant intelligent charging machine Drive Protecting Circuit.
Background technology
Existing contravariant intelligent charge drive circuit such as Fig. 1, when being turned off after the operation of contravariant intelligent charging machine, hand over
Self induction electromotive force caused by stream contactor KM1, KM2, KM3 coil is superimposed upon system inverter both ends, causes inverter moment peak
Value increase, easily burns out inverter.
Utility model content
Technical problem to be solved in the utility model is intelligently filled in view of the shortcomings of the prior art, providing a kind of contravariant
Motor driving protection circuit.
In order to solve the above technical problems, technical scheme is used by the utility model：A kind of contravariant intelligent charging machine
Drive Protecting Circuit, including transformer；Also include three contactors；The coil of first contactor and the first blower fan, the second blower fan
After parallel connection, then connect with the first power switch；First power switch is connected with first switch；The coil of second contactor with
After 3rd fan parallel-connection, then switch and connect with second source, the second source switch is connected with second switch；3rd contactor
Coil connected with the 3rd power switch；3rd power switch is connected with two output switchs；Described two output switchs
It is in parallel；First power switch, first switch, second switch are connected to the first exchange output bus of Circuit Fault on Secondary Transformer
On；First blower fan, the second blower fan, the 3rd blower fan, first contactor, second contactor, the 3rd contactor are connected to transformer two
On second exchange output bus of secondary side；The first exchange output bus is connected to inverter by the contact of first contactor
First input end, the second exchange output bus are connected to the second input of inverter.
First power switch, second source switch, the 3rd power switch are controllable silicon.
First power switch is connected by first resistor with first switch；The second source switch passes through the second electricity
Resistance is connected with second switch；3rd power switch is connected by 3rd resistor with one of output switch.
Compared with prior art, had the beneficial effect that possessed by the utility model：The utility model solves contravariant intelligence
The problem of energy charger inverter is easily burnt out, drastically increases the reliability and security of circuit, ensure that intelligent charge
Machine is run reliable and stablely.
Brief description of the drawings
Fig. 1 is existing contravariant intelligent charging machine driver circuit schematic diagram；
Fig. 2 is the utility model contravariant intelligent charging machine Drive Protecting Circuit schematic diagram.
Embodiment
As shown in Fig. 2 after first contactor KM1 coil is in parallel with the first blower fan Fn1, the second blower fan Fn2, then with first
Power switch T1 connects；First power switch is connected with first switch K2；Second contactor KM2 coil and the 3rd blower fan
After Fn3 parallel connections, then switch T2 with second source and connect, the second source switch is connected with second switch K1；3rd contactor
KM3 coil is connected with the 3rd power switch T3；3rd power switch is connected with two output switchs SW5, SW0；It is described
Two output switch parallel connections；First power switch, first switch, second switch are connected to the of transformer TB2 secondary sides
On one exchange output bus；First blower fan, the second blower fan, the 3rd blower fan, first contactor, second contactor, the 3rd contactor
It is connected on the second exchange output bus of Circuit Fault on Secondary Transformer；First exchange output bus the touching by first contactor
Point is connected to inverter V1 first input end, and the second exchange output bus is connected to the second input of inverter；First electricity
Source switch is connected by first resistor R1 with first switch；The second source switch is connected by second resistance R2 and second switch
Connect；3rd power switch is connected by 3rd resistor R3 with one of output switch.
In the utility model, the first power switch, second source switch, the 3rd power switch are controllable silicon.
Controllable silicon can automatically control three ac contactor coils and be turned off when π phases, amplitude are 0, prevent from electrification
Kinetic potential is superimposed peak value at inverter both ends, is burnt out so as to effectively prevent inverter, it is ensured that charger is run reliable and stablely.
Claims (3)
1. a kind of contravariant intelligent charging machine Drive Protecting Circuit, including transformer；Characterized in that, also include three contacts
Device；After the coil of first contactor and the first blower fan, the second fan parallel-connection, then connect with the first power switch；First electricity
Source switch is connected with first switch；After the coil of second contactor and the 3rd fan parallel-connection, then switch and connect with second source, institute
Second source switch is stated to connect with second switch；The coil of 3rd contactor is connected with the 3rd power switch；3rd power supply
Switch is connected with two output switchs；Described two output switchs are in parallel；First power switch, first switch, second open
Guan Jun is connected on the first exchange output bus of Circuit Fault on Secondary Transformer；First blower fan, the second blower fan, the 3rd blower fan, the first contact
Device, second contactor, the 3rd contactor are connected on the second exchange output bus of Circuit Fault on Secondary Transformer；First exchange is defeated
Go out the first input end that bus is connected to inverter by the contact of first contactor, the second exchange output bus is connected to inversion
Second input of device, the output switch are button switch.
2. contravariant intelligent charging machine Drive Protecting Circuit according to claim 1, it is characterised in that first power supply
Switch, second source switch, the 3rd power switch are controllable silicon.
3. contravariant intelligent charging machine Drive Protecting Circuit according to claim 1 or 2, it is characterised in that described first
Power switch is connected by first resistor with first switch；The second source switch is connected by second resistance and second switch
Connect；3rd power switch is connected by 3rd resistor with one of output switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720312859.5U CN207010544U (en) | 2017-03-29 | 2017-03-29 | A kind of contravariant intelligent charging machine Drive Protecting Circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720312859.5U CN207010544U (en) | 2017-03-29 | 2017-03-29 | A kind of contravariant intelligent charging machine Drive Protecting Circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010544U true CN207010544U (en) | 2018-02-13 |
Family
ID=61429087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720312859.5U Active CN207010544U (en) | 2017-03-29 | 2017-03-29 | A kind of contravariant intelligent charging machine Drive Protecting Circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010544U (en) |
-
2017
- 2017-03-29 CN CN201720312859.5U patent/CN207010544U/en active Active
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