CN106059205A - Motor with overcurrent protection device - Google Patents
Motor with overcurrent protection device Download PDFInfo
- Publication number
- CN106059205A CN106059205A CN201610476435.2A CN201610476435A CN106059205A CN 106059205 A CN106059205 A CN 106059205A CN 201610476435 A CN201610476435 A CN 201610476435A CN 106059205 A CN106059205 A CN 106059205A
- Authority
- CN
- China
- Prior art keywords
- motor
- critesistor
- resistance
- overcurrent
- overcurrent protector
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
Abstract
The invention discloses a motor with an overcurrent protection device. The motor comprises a shell (1), a stator (2), a junction box (5) of the motor and an overcurrent protector. The stator is arranged on the inner wall of the shell. The junction box is arranged on the outer wall of the shell. A wiring board (52) of the motor is mounted at the lower part of the junction box. A circuit printing board (11) of the overcurrent protector is mounted at the upper part of the junction box. A thermistor Rt is arranged in a wire slot (3) of the stator. The pin of the thermistor is connected with the signal input end of the overcurrent protector. The output end of the overcurrent protector is connected with a control circuit of the motor. When the temperature in the wire slot is very high, the power of the motor is switched off. The device is characterized in that the overcurrent protector is mounted in the junction box of the motor; a user does not need to select a matched overcurrent protector; the overcurrent signal output by the overcurrent protector can directly drive an alternating current contactor; and the usage is convenient.
Description
Technical field
The present invention relates to a kind of motor, this motor is equipped with overcurrent protective device.
Background technology
For protection motor, need motor is carried out overcurrent protection.The method of conventional overcurrent protection is to detect electronic
The winding current of machine, cuts off the working power of motor when winding current is excessive.The weak point of this kind of method is to work as environment
When temperature changes, need to reset overcurrent value；Additionally need peripheral hardware overcurrent protective device.
Summary of the invention
The technical problem to be solved in the present invention is to provide the motor of a kind of band overcurrent protective device, to facilitate user to make
With.
The technical scheme is that, the motor of a kind of band overcurrent protective device, it includes casing 1, stator 2, electronic
The rosette 5 of machine, overcurrent protector 10, stator is arranged on casing inner wall, and rosette is arranged on the outer wall of casing；Rosette
Bottom the patch panel 52 of motor is installed, the top of rosette is provided with the printed circuit board 11 of overcurrent protector, fixed
Being provided with critesistor Rt in the wire casing 3 of son, the pin of critesistor is connected to the signal input part of overcurrent protector, overcurrent protection
The outfan of device is connected in the control circuit of motor, when in wire casing, temperature cuts off motor power time too high.
It is a feature of the present invention that overcurrent protector is arranged in the rosette of motor, user is supporting without reselection
Overcurrent protector；The over-current signal of overcurrent protector output can directly drive exchange to connect device, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the enlarged drawing of wire casing in Fig. 1.
Fig. 3 is overcurrent protector electrical schematic diagram.
Fig. 4 is motor electric control theory figure.
Detailed description of the invention
The detailed description of the invention of the present invention is described in conjunction with accompanying drawing.
The motor of a kind of band overcurrent protective device, it includes casing 1, stator 2, the rosette 5 of motor, overcurrent protection
Device 10, stator is arranged on casing inner wall, and rosette is arranged on the outer wall of casing；The bottom of rosette is provided with motor
Patch panel 52, the top of rosette is provided with the printed circuit board 11 of overcurrent protector, is provided with temperature-sensitive electricity in the wire casing 3 of stator
Resistance Rt, the pin of critesistor is passed from line outlet 51 by lead-in wire, is connected to the signal input part of overcurrent protector, crosses stream and protects
The outfan protecting device is connected in the control circuit of motor, when in wire casing, temperature cuts off motor power time too high.
Described critesistor is thin tube-like, can be embedded in wire casing with the winding 4 of motor, it is possible to be inserted in slot wedge 7
In.The quantity of described critesistor is preferably three, is symmetrically arranged in wire casing, is i.e. separately positioned in A, B, C phase wire casing,
Critesistor is connected in series equivalence and becomes critesistor Rt.
Described overcurrent protector, including power subsystem, temperature detecting unit, over-current signal output unit.
Described power subsystem includes diode D1, resistance R1, electric capacity C1, stabilivolt D2, and the anode of diode D1 connects electricity
B phase input on the patch panel of motivation, one end of the negative electrode connecting resistance R1 of diode D1, another termination capacitor C1 of resistance R1
Positive pole, the negative pole of electric capacity C1 is connected with the C phase input on patch panel, the minus earth of electric capacity C1, stabilivolt D2 and electric capacity
C1 is in parallel；Described ground is the voltage signal reference edge of overcurrent protector.
Described temperature detecting unit includes critesistor Rt, resistance R2, audion T1, stabilivolt D3, resistance R3, optocoupler
The light emitting diode of GE1, termination a binding post J1, binding post J1 of critesistor Rt meets the positive pole of electric capacity C1, critesistor Rt
Another termination binding post J2, binding post J2 by resistance R2 ground connection, binding post J1, J2 are the signal input of overcurrent protector
End, the base stage of audion T1 meets binding post J2, and the emitter stage of audion T1 passes through stabilivolt D3 ground connection, the luminescence two of optocoupler GE1
Pole pipe connects the colelctor electrode of audion T1 by resistance R3；The model of optocoupler GE1 is TLP3050.
Described over-current signal output unit includes the light controllable silicon of optocoupler GE1, bidirectional triode thyristor KT, the light of optocoupler GE1
Controllable silicon is connected across on control pole and the negative electrode of bidirectional triode thyristor KT, and the negative electrode of bidirectional triode thyristor KT and anode are overcurrent protector
Outfan, the model of bidirectional triode thyristor KT is L401E5.
The circuit structure of overcurrent protector is simple, and the electronic component used is few, the printed circuit board of welding electronic component
Can be placed in motor connecting cartridge.
The operation principle of overcurrent protector is, power subsystem is temperature detecting unit, over-current signal output unit provides 9V
Running voltage；In temperature detecting unit, critesistor Rt, resistance R2 constitute a bleeder circuit, and the model of critesistor Rt is
MZ6, when temperature rises, resistance also rises, and it is selective that its operating temperature is divided into some specifications during fabrication, attached at operating temperature
The rate of change that nearly resistance varies with temperature is the biggest；When the temperature rising value operating temperature of winding, audion T1 base stage is over the ground
Voltage is less than blanking voltage voltage stabilizing value and the audion T1 base voltage sum of stabilivolt D3 (blanking voltage be), and audion T1 cuts
Only, the light emitting diode no current of optocoupler GE1 passes through, and the light controllable silicon cut-off of optocoupler GE1, bidirectional triode thyristor KT ends.
As shown in Figure 4, main contacts CJ-1, CJ-2, CJ-3 of A.C. contactor CJ concatenate the control circuit of motor respectively
In alternating current power supply A, B, C phase loop, the coil pressing start button QA A.C. contactor CJ obtains electric, main contacts CJ-1, CJ-2,
CJ-3 closes, and motor D rotates, and after start button is unclamped, the auxiliary contact CJ-4 of A.C. contactor CJ maintains A.C. contactor CJ
Coil obtain electric.The coil pressing stop button TA A.C. contactor CJ obtains electric mistake.When overcurrent protector uses, by two-way controlled
The negative electrode of silicon KT and anode series in the loop of auxiliary contact CJ-4, the line of A.C. contactor CJ when bidirectional triode thyristor KT ends
Circle dead electricity, the main contacts of A.C. contactor CJ disconnects and cuts off motor power.
Claims (3)
1. a motor for band overcurrent protective device, it includes casing (1), stator (2), the rosette (5) of motor, crosses stream
Protector (10), stator is arranged on casing inner wall, and rosette is arranged on the outer wall of casing；It is characterized in that, under rosette
Portion is provided with the patch panel (52) of motor, and the top of rosette is provided with the printed circuit board of overcurrent protector (11), fixed
Being provided with critesistor Rt in the wire casing (3) of son, the pin of critesistor is connected to the signal input part of overcurrent protector, crosses stream and protects
The outfan protecting device is connected in the control circuit of motor, when in wire casing, temperature cuts off motor power time too high.
2. according to the motor of the band overcurrent protective device described in claim, it is characterized in that, described critesistor Rt is by three
The series connection of root critesistor is formed, and three critesistor are symmetrically disposed in wire casing (3).
The motor of band overcurrent protective device the most according to claim 1 and 2, is characterized in that, described overcurrent protector,
Including power subsystem, temperature detecting unit, over-current signal output unit；
Described power subsystem includes diode D1, resistance R1, electric capacity C1, stabilivolt D2, and the anode of diode D1 connects motor
Patch panel on B phase input, one end of the negative electrode connecting resistance R1 of diode D1, another termination capacitor C1 of resistance R1 is just
Pole, the negative pole of electric capacity C1 is connected with the C phase input on patch panel, the minus earth of electric capacity C1, and stabilivolt D2 and electric capacity C1 is also
Connection；
Described temperature detecting unit includes critesistor Rt, resistance R2, audion T1, stabilivolt D3, resistance R3, optocoupler GE1
Light emitting diode, the positive pole of termination capacitor C1 of critesistor Rt, the other end of critesistor Rt pass through resistance R2 ground connection,
The base stage of audion T1 connects the other end of critesistor Rt, and the emitter stage of audion T1 passes through stabilivolt D3 ground connection, optocoupler GE1's
Light emitting diode connects the colelctor electrode of audion T1 by resistance R3；The model of optocoupler GE1 is TLP3050；
Described over-current signal output unit includes the light controllable silicon of optocoupler GE1, bidirectional triode thyristor KT, and the light of optocoupler GE1 is controlled
Silicon is connected across on control pole and the negative electrode of bidirectional triode thyristor KT, and the negative electrode of bidirectional triode thyristor KT and anode are the defeated of overcurrent protector
Going out end, the model of bidirectional triode thyristor KT is L401E5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476435.2A CN106059205A (en) | 2016-06-27 | 2016-06-27 | Motor with overcurrent protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476435.2A CN106059205A (en) | 2016-06-27 | 2016-06-27 | Motor with overcurrent protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106059205A true CN106059205A (en) | 2016-10-26 |
Family
ID=57165689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610476435.2A Pending CN106059205A (en) | 2016-06-27 | 2016-06-27 | Motor with overcurrent protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106059205A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231067A (en) * | 2017-08-14 | 2017-10-03 | 江苏星宇电机有限公司 | A kind of energy-saving motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450311U (en) * | 2009-04-28 | 2010-05-05 | 中山大洋电机股份有限公司 | Temperature control circuit of motor |
| CN102087150A (en) * | 2010-11-25 | 2011-06-08 | 奇瑞汽车股份有限公司 | Electric automobile motor temperature sensor system and detection method thereof |
| CN203645482U (en) * | 2014-01-15 | 2014-06-11 | 杨莉 | Motor with overheating protection function |
| CN105300548A (en) * | 2014-06-13 | 2016-02-03 | 发那科株式会社 | Overheat detection device for electric motor |
-
2016
- 2016-06-27 CN CN201610476435.2A patent/CN106059205A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450311U (en) * | 2009-04-28 | 2010-05-05 | 中山大洋电机股份有限公司 | Temperature control circuit of motor |
| CN102087150A (en) * | 2010-11-25 | 2011-06-08 | 奇瑞汽车股份有限公司 | Electric automobile motor temperature sensor system and detection method thereof |
| CN203645482U (en) * | 2014-01-15 | 2014-06-11 | 杨莉 | Motor with overheating protection function |
| CN105300548A (en) * | 2014-06-13 | 2016-02-03 | 发那科株式会社 | Overheat detection device for electric motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231067A (en) * | 2017-08-14 | 2017-10-03 | 江苏星宇电机有限公司 | A kind of energy-saving motor |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161026 |
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| WD01 | Invention patent application deemed withdrawn after publication |