CN209709673U - The thermal-shutdown circuit and breaker of breaker - Google Patents
The thermal-shutdown circuit and breaker of breaker Download PDFInfo
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- CN209709673U CN209709673U CN201920804749.XU CN201920804749U CN209709673U CN 209709673 U CN209709673 U CN 209709673U CN 201920804749 U CN201920804749 U CN 201920804749U CN 209709673 U CN209709673 U CN 209709673U
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- temperature
- breaker
- processor
- busbar
- circuit
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Abstract
The utility model provides the thermal-shutdown circuit and breaker of a kind of breaker, is related to Low Voltage Electrical Apparatus.The thermal-shutdown circuit of the breaker includes: processor, temperature sensor, busbar component and trip assembley therefor；The test side of temperature sensor is located on busbar component, and the signal end of temperature sensor is connect with processor；Trip assembley therefor is connect with processor.If the temperature signal for the busbar component that processor is obtained by the test side by temperature sensor that the signal end of temperature sensor is sent; when meeting pre-set preset condition; it controls trip assembley therefor and executes trip action; so that breaker is opened a way; avoiding the constant temperature of breaker from increasing initiation safety problem not only realizes the detection of busbar temperature compared to the prior art; the protection to breaker can also be completed according to testing result, improve the safety of breaker in use.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, thermal-shutdown circuit in particular to a kind of breaker and disconnected
Road device.
Background technique
Breaker be can turn on, carry and disjunction normal circuit under the conditions of electric current, also can be in defined improper electricity
A kind of mechanical switch electric appliance of certain time and breaking current is connected, carried under the conditions of road.It is generally comprised in breaker at present point
Device is flowed, is measured by current divider through the DC current in breaker.Under low-voltage distribution environment, the electric current for flowing through breaker can
Can be larger, current divider can generate biggish heat, cause current divider temperature excessively high.Especially when electric current be more than rated limit or
When current divider installation is improper, it may appear that resistance caused by current divider poor contact increases problem, so that in current divider temperature
It rises, causes circuit breaker failure even fire.
In the prior art, such as application No. is what is recorded in the patent of CN201620122924.3, sensor can be passed through
The temperature of busbar is detected, thus the case where understanding busbar fever and scaling loss in time.
But the prior art is to obtain the temperature of busbar, is judged after accident, be cannot achieve to breaker
Protection, causes breaker safe not high.
Utility model content
The purpose of this utility model is that in view of the deficiency of the prior art, the excess temperature for providing a kind of breaker is protected
Protection circuit and breaker, to solve the problems, such as that breaker safe is not high.
To achieve the above object, the utility model embodiment the technical solution adopted is as follows:
In a first aspect, the utility model embodiment provides a kind of thermal-shutdown circuit of breaker, comprising: processor,
Temperature sensor, busbar component and trip assembley therefor；
The test side of the temperature sensor is located on the busbar component, the signal end of the temperature sensor with it is described
Processor connection；The trip assembley therefor is connected to the processor；
The temperature sensor for obtaining the temperature signal of the busbar component by test side detection, and leads to
It crosses the signal end and the temperature signal of the busbar component is sent to the processor；
The processor, for controlling the tripping group when the temperature signal of the busbar component meets preset condition
Part tripping.
Optionally, the busbar component includes busbar and current divider, and the busbar and the current divider are welded to connect, described
Pad of the test side of temperature sensor between the busbar and the current divider.
Optionally, the processor calculates specifically for the temperature signal according to the busbar component and obtains temperature change
Rate controls the trip assembley therefor tripping if the rate of temperature change exceeds preset threshold.
Optionally, the circuit further include: temperature conditioning component；The signal end of the temperature sensor passes through the temperature
Conditioning component is connected to the processor；
The temperature sensor, specifically for obtaining the temperature signal of the busbar component by test side detection,
And the temperature signal of the busbar component is sent to by the temperature conditioning component by the signal end；
The temperature conditioning component, for the temperature of the busbar component to be pre-processed, the temperature that obtains that treated
Signal, and treated the temperature signal is sent to the processor.
Optionally, the temperature conditioning component includes filter circuit and/or amplifying circuit.
Optionally, the circuit further include: alarm assemblies, the alarm assemblies are connected to the processor；
The processor, for controlling the alarm assemblies report when the rate of temperature change exceeds the preset threshold
It is alert.
Optionally, the alarm assemblies include loudspeaker and/or display.
Optionally, the temperature sensor is non-contact temperature sensor, or the contact type temperature sensor with isolation.
Optionally, the trip assembley therefor includes: magnetic flux element and tripping connector；
The processor, for when the temperature signal of the busbar component meets preset condition, controlling the magnetic flux member
Part drives the tripping connector to disconnect.
Second aspect, the utility model embodiment additionally provide a kind of breaker, comprising: such as any one of above-mentioned first aspect
The thermal-shutdown circuit of the breaker.
The beneficial effects of the utility model are:
The utility model embodiment is by setting difference temperature sensor connected to the processor and trip assembley therefor, if processing
The temperature signal for the busbar component that device is obtained by the test side by temperature sensor that the signal end of temperature sensor is sent,
When meeting pre-set preset condition, illustrate that the temperature of busbar component is excessively high, then it is dynamic to can control trip assembley therefor execution tripping
Make, so that breaker is opened a way, avoids the constant temperature of breaker from increasing and cause safety problem, compared to the prior art, no
The detection of busbar temperature is only realized, the protection to breaker can also be completed according to testing result, improving breaker makes
With safety in the process.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that an embodiment of the present invention provides；
Fig. 2 is the structural schematic diagram for the busbar component that an embodiment of the present invention provides；
Fig. 3 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that another embodiment of the utility model provides；
Fig. 4 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that another embodiment of the utility model provides；
Fig. 5 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that another embodiment of the utility model provides.
Icon: 110- processor；120- temperature sensor；130- busbar component；1301- busbar；1302- current divider；
140- trip assembley therefor；150- temperature conditioning component；160- alarm assemblies.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Fig. 1 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that an embodiment of the present invention provides.This is practical
Breaker involved in new embodiment, which can be, needs direct current for the breaker of plastic casing of low-voltage circuit and frame circuit breaker etc.
The breaker of measurement, but not limited to this.
As shown in Figure 1, the circuit may include: processor 110, temperature sensor 120, busbar component 130 and tripping group
Part 140.
Wherein, the test side of temperature sensor 120 is located on busbar component 130, the signal end of temperature sensor 120 and place
It manages device 110 to connect, trip assembley therefor 140 is connect with processor 110.
Temperature sensor 120 for detecting the temperature signal for obtaining busbar component 130 by test side, and passes through signal
The temperature signal of busbar component 130 is sent to processor 110 by end.
Processor 110, for when the temperature signal of busbar component 130 meets preset condition, control trip assembley therefor 140 to be de-
Button.
Since breaker needs to detect during the work time the DC current of breaker by current divider, and in detection electric current
When, it may be more than rated current due to DC current, alternatively, there are deviations for the position of current divider installation, current divider be caused to shake
It is dynamic the case where poor contact occur, so that resistance be caused to increase, and then current divider temperature is caused to increase, the peace such as fire may be caused
Full accident.
It, can be by thermal-shutdown circuit in breaker when detecting the DC current of breaker in the utility model
Temperature detected, prevent breaker from safety accident occur.Correspondingly, the temperature sensor of thermal-shutdown circuit can be passed through
120 detect the temperature of breaker.
The test side of temperature sensor 120 is located on busbar component 130 or near busbar component 130, so that detection obtains
It is used to indicate the temperature signal of 130 temperature of busbar component, the temperature of circuit breaker internal can be reflected by the temperature of busbar component 130
Degree.Correspondingly, temperature sensor 120 can send temperature letter to processor 110 by the signal end connecting with processor 110
Number, processor 110 temperature signal can be judged based on the received, and whether temperature signal meets pre-set default
Condition.If temperature signal meets preset condition, illustrate that the temperature of busbar component 130 is excessively high, it is believed that circuit breaker internal temperature
Spend height.
So, processor 110 can be to trip assembley therefor 140 when the temperature signal of busbar component 130 meets preset condition
Tripping instruction is sent, and trip assembley therefor 140 can be according to the tripping instruction execution trip action, so that breaker is by being connected
State switches to off-state, avoids leading to safety accident since temperature is excessively high.
Further, trip assembley therefor 140 may include: magnetic flux element and tripping connector.
The magnetic flux element is for executing trip action, so that breaker is switched to off-state by state.Accordingly
, processor 110, for when the temperature signal of busbar component 130 meets preset condition, control magnetic flux element to drive tripping to connect
Fitting disconnects.
For example, processor 110 can be to trip assembley therefor 140 when the temperature signal of busbar component 130 meets preset condition
It sends high level signal or low level signal, the magnetic flux element of trip assembley therefor 140 receives the high level signal or low level signal,
So that the magnetic field of magnetic flux element changes, to drive tripping connector to disconnect by changing magnetic field.
In addition, the processor 110 can be MCU (Microcontroller Unit, micro-control unit), or its
He has the device of data operation function, and the utility model embodiment does not limit this.
In conclusion the thermal-shutdown circuit of breaker provided by the embodiment of the utility model, by be arranged respectively with place
The temperature sensor and trip assembley therefor of device connection are managed, if processor is passed by what the signal end of temperature sensor was sent by temperature
The temperature signal for the busbar component that the test side of sensor obtains, when meeting pre-set preset condition, illustrates busbar component
Temperature is excessively high, then can control trip assembley therefor and execute trip action, so that breaker is opened a way, the temperature of breaker is avoided to hold
The high safety problem that causes of continuing rising not only realizes the detection of busbar temperature compared to the prior art, can also be according to testing result
The protection to breaker is completed, the safety of breaker in use is improved.
Fig. 2 is the structural schematic diagram for the busbar component that an embodiment of the present invention provides, as shown in Fig. 2, optionally, it is female
Arranging component 130 may include busbar 1301 and current divider 1302.
Wherein, busbar 1301 is fixedly connected with current divider 1302.For example, busbar 1301 and current divider 1302 can the companies of welding
It connects.I.e. there are pads between busbar 1301 and current divider 1302, sometimes because welding is improper, resistance value are caused to increase, and weld
Contact temperature increases.And pass through heat transfer between busbar 1301 and current divider 1302, the temperature close of entire busbar component 130,
And it will affect the temperature of entire breaker.When temperature sensor 120 detects temperature, the test side of temperature sensor 120 is located at
On busbar component 130, optionally, referring to Fig. 3, the test side of temperature sensor 120 can be located at busbar 1301 and current divider
Pad between 1302, so that temperature sensor 120 can be by detecting temperature of the temperature of pad as busbar component 130
Degree.
Certainly, the test side of temperature sensor 120 can pad between busbar 1301 and current divider 1302 it is attached
Closely, not necessarily with welding point contact, the test side of temperature sensor 120 is less than certain threshold value at a distance from the pad.
Correspondingly, processor 110 can be judged according to the temperature signal of acquisition, the temperature of busbar component 130 is determined
It is whether excessively high, so that determining the need for control trip assembley therefor 140 according to judging result executes trip operation.
It, can be directly according to busbar component 130 during being judged according to temperature signal in a kind of embodiment
Temperature signal judge whether the temperature value of busbar component 130 excessively high (for example whether beyond threshold value).
Optionally, in another embodiment, busbar component 130 and entire breaker are in high temperature for a long time in order to prevent
State, rate of temperature change can be calculated according to the temperature signal of above-mentioned busbar component 130 in processor 110, thus according to temperature
Degree change rate determines whether the temperature of current divider 1302 is varied widely in a short time.
That is processor 110 can be specifically used for the temperature signal according to busbar component 130, calculate and obtain rate of temperature change,
If rate of temperature change exceeds preset threshold, the tripping of trip assembley therefor 140 is controlled.
Specifically, the temperature signal that processor 110 can be acquired according to last moment, and combine the temperature letter currently acquired
Number, the temperature gap between two temperature signals is calculated, and obtain the time difference between current time and last moment,
Finally using the quotient between temperature gap and time difference as rate of temperature change.
For example, the time difference between current time and last moment can be 1 second, then rate of temperature change is then used to indicate
The changed degree size of the temperature of current divider 1302 in 1 second.
It should be noted that in practical applications, temperature sensor 120 can be non-contact temperature sensor or band
The contact type temperature sensor of isolation.Corresponding, the test side of temperature sensor 120 can be with the mother in busbar component 130
Row 1301 or current divider 1302 are in contact, and can not also contact with busbar 1301 or current divider 1302, but are located at busbar 1301
Or near current divider 1302.
If temperature sensor 120 is the contact type temperature sensor that band is isolated, the test side of temperature sensor 120 can be with
Pad between busbar 1301 and current divider 1302；If temperature sensor 120 is non-contact temperature sensor, temperature
The test side for spending sensor 120 can be between busbar 1301 and current divider 1302 near pad, in the utility model
It is not specifically limited.
Fig. 4 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that another embodiment of the utility model provides, such as Fig. 4
Shown, on the basis of the thermal-shutdown circuit of breaker shown in Fig. 1, the thermal-shutdown circuit of the breaker can also be wrapped
Include: the signal end of temperature conditioning component 150, temperature sensor 120 is connect by temperature conditioning component 150 with processor 110.
Since the collected temperature signal of temperature sensor 120 is there may be certain interference signal, and temperature signal
The amplitude of corresponding waveform is smaller, can not accurately obtain the temperature of busbar component 130.Therefore, can temperature sensor 120 with
Temperature conditioning component 150 is set between processor 110, to be pre-processed by temperature conditioning component 150 to temperature signal.
Optionally, temperature sensor 120 can be specifically used for detecting the temperature for obtaining busbar component 130 by test side
Signal, and the temperature signal of busbar component 130 is sent to by temperature conditioning component 150 by signal end；And temperature conditioning component
150, it can be used for pre-processing the temperature of busbar component 130, obtain treated temperature signal, and to processor 110
Send treated temperature signal.
Wherein, temperature conditioning component 150 may include filter circuit and/or amplifying circuit, and filter circuit can be used for pair
The temperature signal that temperature sensor 120 acquires is filtered, and removes interference signal；Amplifying circuit is then used to carry out temperature signal
Amplification, so that the temperature of busbar component 130 be determined more accurately.
If temperature conditioning component 150 includes simultaneously filter circuit and amplifying circuit, the signal end of temperature sensor 120 can
To connect with filter circuit, filter circuit and amplifying circuit connect, amplifying circuit is then connected to processor 110.Alternatively, can temperature
The signal end of degree sensor 120 is connect with amplifying circuit, amplifying circuit and filter circuit connect, filter circuit is then connected to processing
Device 110, the utility model is with no restriction.
Fig. 5 is the structural schematic diagram of the thermal-shutdown circuit for the breaker that another embodiment of the utility model provides, such as Fig. 5
Shown, on the basis of the thermal-shutdown circuit of breaker shown in Fig. 4, the thermal-shutdown circuit of the breaker can also be wrapped
Include: alarm assemblies 160, alarm assemblies 160 are connect with processor 110.
Thermal-shutdown circuit turns off breaker by trip assembley therefor 140, on the basis of realizing overheat protector, also
User temperature can be reminded excessively high by alarm assemblies 160, so that user can be according to the information of warning note in time to open circuit
Device is cut off or is safeguarded, avoids that safety accident occurs.
Optionally, processor 110 can be used for when rate of temperature change is beyond preset threshold, and control alarm assemblies 160 are reported
It is alert.Alternatively, can also be when temperature value is more than threshold value, control alarm assemblies 160 are alarmed, and the utility model is with no restriction.Accordingly
Ground, alarm assemblies 160 execute alarm operation under the control of processor 110, excessively high to prompt the user with temperature, such as processor
110 send alarm command to alarm assemblies 160, and alarm assemblies 160 are alarmed according to alarm command.
It should be noted that alarm assemblies 160 may include loudspeaker and/or display, loudspeaker can be according to processing
The control of device 110 prompts the user with that temperature is excessively high by sound, and display then can be according to the control of processor 110 to user
Show the excessively high alert interface of temperature.
For example, when being alarmed by loudspeaker siren or alarm voice " temperature mistake can be played by loudspeaker
It is high, it is noted that！" alternatively, direct acoustic warning the tinkle of bells.
In another example display can show " temperature is excessively high, it is noted that！" similar printed words.
But it is not limited with above-mentioned example, alarm assemblies 160 can also include signal lamp, and signal lamp can be in processor 110
Control under flash, to remind user.
The utility model embodiment also provides a kind of breaker, comprising: such as the mistake of above-mentioned Fig. 1 to breaker shown in fig. 5
Temperature protection circuit.
In conclusion breaker provided by the embodiment of the utility model, by the way that thermal-shutdown circuit is arranged in breaker,
The thermal-shutdown circuit includes difference temperature sensor connected to the processor and trip assembley therefor, if processor passes through temperature sensing
The temperature signal for the busbar component that the test side by temperature sensor that the signal end of device is sent obtains, meets pre-set
When preset condition, illustrate that the temperature of busbar component is excessively high, then can control trip assembley therefor and execute trip action, so that breaking
Device open circuit, avoiding the constant temperature of breaker from increasing initiation safety problem not only realizes busbar temperature compared to the prior art
Detection, the protection to breaker can also be completed according to testing result, improve the safety of breaker in use.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of thermal-shutdown circuit of breaker characterized by comprising processor, temperature sensor, busbar component and de-
Buckle assembly；
The test side of the temperature sensor is located on the busbar component, the signal end of the temperature sensor and the processing
Device connection；The trip assembley therefor is connected to the processor；
The temperature sensor for obtaining the temperature signal of the busbar component by test side detection, and passes through institute
It states signal end and the temperature signal of the busbar component is sent to the processor；
The processor, it is de- for when the temperature signal of the busbar component meets preset condition, controlling the trip assembley therefor
Button.
2. circuit as described in claim 1, which is characterized in that the busbar component includes busbar and current divider, the busbar
It is welded to connect with the current divider, welding of the test side of the temperature sensor between the busbar and the current divider
Point.
3. circuit as described in claim 1, which is characterized in that the processor, specifically for according to the busbar component
Temperature signal calculates and obtains rate of temperature change, if the rate of temperature change exceeds preset threshold, it is de- to control the trip assembley therefor
Button.
4. circuit as described in claim 1, which is characterized in that the circuit further include: temperature conditioning component；The temperature passes
The signal end of sensor is connected to the processor by the temperature conditioning component；
The temperature sensor specifically for obtaining the temperature signal of the busbar component by test side detection, and leads to
It crosses the signal end and the temperature signal of the busbar component is sent to the temperature conditioning component；
The temperature conditioning component, for the temperature of the busbar component to be pre-processed, the temperature signal that obtains that treated,
And treated the temperature signal is sent to the processor.
5. circuit as claimed in claim 4, which is characterized in that the temperature conditioning component includes filter circuit and/or amplification
Circuit.
6. circuit as claimed in claim 3, which is characterized in that the circuit further include: alarm assemblies, the alarm assemblies with
The processor connection；
The processor, for when the rate of temperature change exceeds the preset threshold, controlling the alarm assemblies alarm.
7. circuit as claimed in claim 6, which is characterized in that the alarm assemblies include loudspeaker and/or display.
8. the circuit as described in claim 1 to 7 is any, which is characterized in that the temperature sensor is non-contact temperature biography
Sensor, or the contact type temperature sensor with isolation.
9. the circuit as described in claim 1 to 7 is any, which is characterized in that the trip assembley therefor includes: magnetic flux element and tripping
Connector；
The processor, for controlling the magnetic flux element band when the temperature signal of the busbar component meets preset condition
The tripping connector is moved to disconnect.
10. a kind of breaker characterized by comprising the overheat protector of breaker as described in any one of claim 1 to 9
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804749.XU CN209709673U (en) | 2019-05-30 | 2019-05-30 | The thermal-shutdown circuit and breaker of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804749.XU CN209709673U (en) | 2019-05-30 | 2019-05-30 | The thermal-shutdown circuit and breaker of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209709673U true CN209709673U (en) | 2019-11-29 |
Family
ID=68651363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920804749.XU Active CN209709673U (en) | 2019-05-30 | 2019-05-30 | The thermal-shutdown circuit and breaker of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209709673U (en) |
-
2019
- 2019-05-30 CN CN201920804749.XU patent/CN209709673U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210715 Address after: Room 1205-3, 1817 Haigang Avenue, Xitangqiao Street (Haiyan Economic Development Zone), Haiyan County, Jiaxing City, Zhejiang Province, 314300 Patentee after: Liangxin Electrical Appliances (Haiyan) Co.,Ltd. Patentee after: Shanghai Liangxin Electrical Co.,Ltd. Address before: No. 2000, Shenjiang South Road, Pudong New Area, Shanghai, 200120 Patentee before: Shanghai Liangxin Electrical Co.,Ltd. |