CN204349446U - The start protection device of motor and vehicle - Google Patents
The start protection device of motor and vehicle Download PDFInfo
- Publication number
- CN204349446U CN204349446U CN201420815566.5U CN201420815566U CN204349446U CN 204349446 U CN204349446 U CN 204349446U CN 201420815566 U CN201420815566 U CN 201420815566U CN 204349446 U CN204349446 U CN 204349446U
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- motor
- circuit
- protection device
- control switch
- start protection
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- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Stopping Of Electric Motors (AREA)
Abstract
The utility model proposes a kind of start protection device of motor, comprising: the electrode input end and the negative input that connect feeding electric motors power supply respectively; The cathode output end be connected with motor respectively and cathode output end; For detecting the current detection circuit of feeding electric motors electric current; Buck circuit, buck circuit comprises control switch, and one end of control switch is connected with electrode input end, and the other end of control switch is connected with negative input; Control circuit, control circuit is connected with the control end of control switch with current detection circuit respectively, with the turn-on and turn-off according to feeding electric motors Current Control control switch.According to the start protection device of motor of the present utility model, electric motor starting can be made more safe and reliable, and motor stabilizing work can be maintained, extend motor useful life.The invention also discloses a kind of vehicle.
Description
Technical field
The utility model relates to automobile technical field, particularly a kind of start protection device of motor and vehicle.
Background technology
Motor (as DC electromotor with brush) is as power driving part, and due to features such as its structure are simple, current application is still very extensive.Because the work characteristics of DC electromotor with brush is: when electric motor starting because motor winding resistance is very little, the mode of direct power supply makes by the electric current of motor winding very large, out-of-control words will burn-out motor, power supply, but the too low motor belt motor load that can not make again of power-limiting normally starts.
In correlation technique, generally all adopt configuration starting resistance or supply convertor as starting the version controlled, this structure not only takes up room greatly, and cost is higher, application inconvenience.
Utility model content
The utility model is intended at least one of solve the problems of the technologies described above.
For this reason, an object of the present utility model is the start protection device proposing a kind of motor.The start protection device of this motor can make electric motor starting more safe and reliable, and can maintain motor stabilizing work, extends motor useful life.
Another object of the present utility model is to propose a kind of vehicle.
To achieve these goals, first aspect of the present utility model discloses a kind of start protection device of motor, comprising: the electrode input end and the negative input that connect feeding electric motors power supply respectively; The cathode output end be connected with motor respectively and cathode output end; For detecting the current detection circuit of feeding electric motors electric current; Buck circuit, described buck circuit comprises control switch, and one end of described control switch is connected with described electrode input end, and the other end of described control switch is connected with described negative input; Control circuit, described control circuit is connected with the control end of described current detection circuit with described control switch respectively, with the turn-on and turn-off of control switch according to described feeding electric motors Current Control.
According to the start protection device of the motor of the utility model embodiment; feedback at the DC start initial stage according to current detection circuit controls control switch; thus restriction starting current (i.e. feeding electric motors electric current); prevent that excessive starting current from impacting motor etc., motor damage etc.; and control switch constant conduction can be controlled after motor normal starting; for feeding electric motors, motor is normally worked.The start protection device of this motor can make electric motor starting more safe and reliable, and can maintain motor stabilizing work, extends the useful life of motor.In addition, this start protection utensil has that structure is simple, cost is low, the advantage of scope of application light.
In addition, following additional technical characteristic can also be had according to the start protection device of the above-mentioned motor of the utility model:
Further, described buck circuit also comprises: electric capacity, and described electric capacity is attempted by between described electrode input end and negative input; Diode, described diode is attempted by between described cathode output end and cathode output end.
Further, described control switch is igbt transistor.
Further, described current detection circuit comprises Hall current sensor, and described Hall current sensor is between described cathode output end and described control circuit.
Further, described control circuit comprises: comparator, and the reverse input end of described comparator receives the feeding electric motors electric current of described current detection circuit detection, and the input in the same way of described comparator receives presets electric motor starting Limited Current; Trigger, the trigger pin of described trigger is connected with the output of described comparator, and the output of described trigger is connected with the control end of described control switch.
Further, described control circuit also comprises: optical coupling isolator, and the input of described optical coupling isolator is connected with the output of trigger; Drive circuit, the input of described drive circuit is connected with the output of described optical coupling isolator, and the output of described drive circuit is connected with the control end of described control switch.
Further, also comprise: variable resistor, described variable resistor is arranged between the input in the same way of described comparator and default electric motor starting Limited Current source, to regulate described default electric motor starting Limited Current.
Further, also comprise: DC/DC change-over circuit, described DC/DC change-over circuit is attempted by between described electrode input end and negative input, and described DC/DC change-over circuit is connected with described control circuit, thinks that described control circuit is powered.
Further, also comprise: timer, described timer is connected with described control circuit, and described timer carries out timing when described control switch turns off, and when reaching the scheduled time, described control circuit controls described control switch conducting.
Second aspect of the present utility model discloses a kind of vehicle, comprising: the start protection device of motor described above.This vehicle can make electric motor starting more safe and reliable, and can maintain motor stabilizing work, extends motor useful life.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structured flowchart of the start protection device of motor according to the utility model embodiment;
Fig. 2 is the circuit theory diagrams of the start protection device of motor according to the utility model embodiment; And
Fig. 3 is the circuit theory diagrams of the control circuit part of the start protection device of motor according to the utility model embodiment.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Below in conjunction with accompanying drawing description according to the start protection device of the motor of the utility model embodiment and the vehicle with it.
Fig. 1 is the structured flowchart of the start protection device of motor according to the utility model embodiment.As shown in Figure 1; according to the start protection device 100 of the motor of the utility model embodiment, comprising: electrode input end 111, negative input 112, cathode output end 121, cathode output end 122, current detection circuit 130, buck circuit 140 and control circuit 150.
Wherein, electrode input end 111 is connected with feeding electric motors power supply 200 with negative input 112.Cathode output end 121 is connected with motor M with cathode output end 122.Current detection circuit 130 is for detecting feeding electric motors electric current.Buck circuit 140 comprises control switch 141, and one end of control switch 141 is connected with electrode input end 111, and the other end of control switch 141 is connected with negative input 112.Control circuit 150 is connected with the control end of current detection circuit 130 with control switch 141 respectively, with the turn-on and turn-off according to feeding electric motors Current Control control switch 141.Wherein, motor M is but is not limited to brush direct current motor.
According to the start protection device of the motor of the utility model embodiment; feedback at the DC start initial stage according to current detection circuit controls control switch; thus restriction starting current (i.e. feeding electric motors electric current); prevent that excessive starting current from impacting motor etc., motor damage etc.; and control switch constant conduction can be controlled after motor normal starting; for feeding electric motors, motor is normally worked.The start protection device of this motor can make electric motor starting more safe and reliable, and can maintain motor stabilizing work, extends the useful life of motor.In addition, this start protection utensil has that structure is simple, cost is low, the advantage of scope of application light.
Below in conjunction with Fig. 2 and Fig. 3, the concrete structure of the current detection circuit 130 of the utility model embodiment, buck circuit 140 and control circuit 150 is described.
As shown in Figure 2, buck circuit 140 also comprises: electric capacity C and diode D.Wherein, electric capacity C is attempted by between electrode input end 111 and negative input 112.Diode D is attempted by between cathode output end 121 and cathode output end 122, and the negative electrode of diode D is connected with cathode output end 121, and the anode of diode D is connected with cathode output end 122.
Shown in composition graphs 2, in an embodiment of the present utility model, control switch is igbt transistor T (being called for short transistor T).In addition, current detection circuit 130 comprises Hall current sensor H, and Hall current sensor H is between cathode output end 122 and control circuit 150.Further, also include: DC/DC change-over circuit 160, DC/DC change-over circuit 160 is attempted by between electrode input end 111 and negative input 112, and DC/DC change-over circuit 160 is connected with control circuit 150, think that control circuit 150 is powered.Namely the direct current between electrode input end 111 and negative input 112 is converted to the direct current being suitable for control circuit 150 and using by DC/DC change-over circuit 160.
As shown in Figure 3, control circuit 150 comprises: comparator U1 and trigger U2.Shown in composition graphs 2, the feeding electric motors electric current that the reverse input end received current testing circuit 130 of comparator U1 detects (is designated as I
f), the input in the same way of comparator U1 receives default electric motor starting Limited Current and (is designated as I
g).The trigger pin B of trigger U2 is connected with the output of comparator U1, the output of trigger U2
be connected with the control end (grid as transistor T) of control switch 141.
Composition graphs 3 again, control circuit 150 also comprises: optical coupling isolator 151 and drive circuit 152.Wherein, the input of optical coupling isolator 151 and the output of trigger U2
be connected.The input of drive circuit 152 is connected with the output of optical coupling isolator 151, and the output of drive circuit 152 is connected with the control end (grid as transistor T) of control switch 141.
After the concrete structure of each energy energy module describing the utility model embodiment, below in conjunction with Fig. 1 to Fig. 3, the operation principle of the start protection device 100 of motor is described in detail.
Comparator U1 receives load circuit electric current (the i.e. feeding electric motors electric current I of Hall current sensor H sampling
f) (namely preset electric motor starting Limited Current I with reference current
g) compare, the output of comparator U1 is connected with the trigger pin B of monostable flipflop U2 (as monostable flipflop), for trigger U2 provides triggering signal.Control circuit 150 passes through output according to triggering signal
(as inverse output terminal) exports corresponding high level or low level signal, thus controls cut-off and the conducting of transistor T.
Particularly, when the load circuit electric current I that Hall current sensor H obtains
fexceed I
gthen control circuit 150 rapidly action close transistor T, after closedown transistor T certain hour, control circuit 150 is turn-on transistor T again, thus reach both limiting motor loop currents (i.e. starting current), and don't affect the object that motor M normally works, when motor M is started, motor starting currents is limited, after motor M normally works, transistor T conducting always enables motor M normally work.In an embodiment of the present utility model, certain hour completes by timer, such as comprise timer (not shown in FIG.), timer is connected with control circuit 150, timer carries out timing when control switch 141 turns off, and when reaching the scheduled time, control circuit 150 controls control switch 141 conducting.After control circuit 150 powers on, the output of trigger U2
be set to 1, after optical coupling isolator 151, drive circuit 152, open transistor T, to power to motor M, supply current is I
f.Detected by Hall current sensor H, by the I detected
ftransfer to the inverting input of comparator U1, work as I
fmore than the I of U1 in-phase input end
gtime, comparator U1 output can overturn, thus trigger flip-flops U2, make it also overturn, output
be set to 0; the low level signal exported closes transistor T through photoelectric coupling isolated drive circuit; after the time of the certain length through being set by timer; trigger U2 resets; after light-coupled isolation and drive circuit, open transistor T again, thus reach the protection object of motor M being started to Limited Current.After motor M is started, its normal loaded work piece electric current will be less than the limit value I of electric motor loop electric current
g, now transistor T block will maintain conducting state, make motor, normal operation work.I
garrange and can come by regulating the adjustable potentiometer VR of comparator U1 in-phase input end.Such as adjustable potentiometer VR is realized by variable resistor, and variable resistor is arranged between the input in the same way of comparator U1 and default electric motor starting Limited Current source (not shown in FIG.), to regulate default electric motor starting Limited Current I
g, make it meet corresponding condition.
According to the start protection device of the motor of the utility model embodiment, electric motor starting can be made more safe and reliable, and motor stabilizing work can be maintained, extend motor useful life.
Further, the utility model discloses a kind of vehicle, comprising: the start protection device of the motor according to above-described embodiment.This vehicle can make electric motor starting more safe and reliable, and can maintain motor stabilizing work, extends motor useful life.
In addition, according to the vehicle of the utility model embodiment other form and effect be all known for the ordinary skill in the art, in order to reduce redundancy, do not repeat herein.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalency thereof.
Claims (10)
1. a start protection device for motor, is characterized in that, comprising:
Connect electrode input end and the negative input of feeding electric motors power supply respectively;
The cathode output end be connected with motor respectively and cathode output end;
For detecting the current detection circuit of feeding electric motors electric current;
Buck circuit, described buck circuit comprises control switch, and one end of described control switch is connected with described electrode input end, and the other end of described control switch is connected with described negative input;
Control circuit, described control circuit is connected with the control end of described current detection circuit with described control switch respectively, with the turn-on and turn-off of control switch according to described feeding electric motors Current Control.
2. the start protection device of motor according to claim 1, is characterized in that, described buck circuit also comprises:
Electric capacity, described electric capacity is attempted by between described electrode input end and negative input;
Diode, described diode is attempted by between described cathode output end and cathode output end.
3. the start protection device of motor according to claim 1 and 2, is characterized in that, described control switch is igbt transistor.
4. the start protection device of motor according to claim 1, is characterized in that, described current detection circuit comprises Hall current sensor, and described Hall current sensor is between described cathode output end and described control circuit.
5. the start protection device of motor according to claim 1, is characterized in that, described control circuit comprises:
Comparator, the reverse input end of described comparator receives the feeding electric motors electric current of described current detection circuit detection, and the input in the same way of described comparator receives presets electric motor starting Limited Current;
Trigger, the trigger pin of described trigger is connected with the output of described comparator, and the output of described trigger is connected with the control end of described control switch.
6. the start protection device of motor according to claim 5, is characterized in that, described control circuit also comprises:
Optical coupling isolator, the input of described optical coupling isolator is connected with the output of trigger;
Drive circuit, the input of described drive circuit is connected with the output of described optical coupling isolator, and the output of described drive circuit is connected with the control end of described control switch.
7. the start protection device of the motor according to claim 5 or 6, is characterized in that, also comprise:
Variable resistor, described variable resistor is arranged between the input in the same way of described comparator and default electric motor starting Limited Current source, to regulate described default electric motor starting Limited Current.
8. the start protection device of motor according to claim 1, is characterized in that, also comprise:
DC/DC change-over circuit, described DC/DC change-over circuit is attempted by between described electrode input end and negative input, and described DC/DC change-over circuit is connected with described control circuit, thinks that described control circuit is powered.
9. the start protection device of motor according to claim 1, is characterized in that, also comprise:
Timer, described timer is connected with described control circuit, and described timer carries out timing when described control switch turns off, and when reaching the scheduled time, described control circuit controls described control switch conducting.
10. a vehicle, is characterized in that, comprising: the start protection device of the motor according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815566.5U CN204349446U (en) | 2014-12-19 | 2014-12-19 | The start protection device of motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815566.5U CN204349446U (en) | 2014-12-19 | 2014-12-19 | The start protection device of motor and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204349446U true CN204349446U (en) | 2015-05-20 |
Family
ID=53232689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420815566.5U Expired - Fee Related CN204349446U (en) | 2014-12-19 | 2014-12-19 | The start protection device of motor and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204349446U (en) |
-
2014
- 2014-12-19 CN CN201420815566.5U patent/CN204349446U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180416 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co.,Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing baowo Automobile Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Motor starting protector and vehicle Effective date of registration: 20200817 Granted publication date: 20150520 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2020990000977 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210507 Granted publication date: 20150520 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2020990000977 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Motor starting protector and vehicle Effective date of registration: 20210726 Granted publication date: 20150520 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2021990000644 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20211219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231123 Granted publication date: 20150520 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990000644 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |