CN113192800A - Small-size intelligent circuit breaker - Google Patents

Small-size intelligent circuit breaker Download PDF

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Publication number
CN113192800A
CN113192800A CN202110291424.8A CN202110291424A CN113192800A CN 113192800 A CN113192800 A CN 113192800A CN 202110291424 A CN202110291424 A CN 202110291424A CN 113192800 A CN113192800 A CN 113192800A
Authority
CN
China
Prior art keywords
hall sensor
shell
circuit breaker
bimetallic strip
horizontal section
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
Application number
CN202110291424.8A
Other languages
Chinese (zh)
Inventor
陆宁懿
龚旺
辛克均
王珊珊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hongfa Automotive Electronics Co Ltd
Original Assignee
Xiamen Hongfa Electrical Safety and Controls Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xiamen Hongfa Electrical Safety and Controls Co Ltd filed Critical Xiamen Hongfa Electrical Safety and Controls Co Ltd
Priority to CN202110291424.8A priority Critical patent/CN113192800A/en
Publication of CN113192800A publication Critical patent/CN113192800A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

The invention discloses a small intelligent circuit breaker, which comprises a shell, two wiring terminals arranged at two ends of the length of the shell, a moving contact, a fixed contact, an electronic release and a lock release mechanism, wherein the moving contact, the fixed contact, the electronic release and the lock release mechanism are arranged in the shell; the moving contact and the static contact as well as the electronic release and the lock release mechanism are respectively arranged at the matched positions; the two wiring terminals are respectively electrically communicated with the moving contact and the fixed contact; the moving contact is linked with the lock tripping mechanism; the shell is internally provided with a Hall sensor and a bimetallic strip, the Hall sensor and the bimetallic strip are connected in an electric connection path between one wiring terminal and the corresponding contact, the output of the Hall sensor controls the electronic release through an electric control component arranged in the shell, and the bimetallic strip is matched with the lock release mechanism. The invention realizes electronic and mechanical dual overload protection by using the Hall sensor and the bimetallic strip.

Description

Small-size intelligent circuit breaker
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a small intelligent circuit breaker with a reclosing function and a circuit breaker length within 90 mm.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The intelligent circuit breaker is one of circuit breakers, the intelligent circuit breaker in the prior art collects current through a current transformer, receives a current signal collected by the current transformer through a microprocessor, compares the collected current signal with a set value, and sends an instruction to enable an electronic release to act to drive a mechanism to trip so as to achieve various protections of overload, overvoltage, undervoltage and the like of the intelligent circuit breaker, wherein particularly, the overload is realized by adopting an electronic overload protection mode. The intelligent circuit breaker in the prior art adopts the current transformer to collect current signals, and the intelligent circuit breaker product has a large appearance due to the large volume of the current transformer, so that the mechanical overload protection function with the bimetallic strip is usually sacrificed when the current transformer is installed on the small intelligent circuit breaker product, namely, no space is available for installing the bimetallic strip in the shell of the small intelligent circuit breaker. In order to realize electronic and mechanical dual overload protection, one mode of the prior art is to realize mechanical overload protection by increasing the length of the circuit breaker, and for a small intelligent circuit breaker product with a length within 90mm, the length of the circuit breaker can not be increased, and usually, mechanical overload protection is realized by increasing an external module, however, the increase of the external module inevitably increases the structural complexity of the product, increases the installation difficulty of the product, and affects the use effect of the product.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a small intelligent circuit breaker which can realize electronic and mechanical double overload protection on the basis of keeping the miniaturization of a product through structural improvement and has the characteristics of simple structure, easiness in assembly and good using effect.
The technical scheme adopted by the invention for solving the technical problems is as follows: a small-sized intelligent circuit breaker comprises a shell, two wiring terminals arranged at two ends of the length of the shell, and a moving contact, a fixed contact, an electronic release and a lock release mechanism which are arranged in the shell; the moving contact and the static contact as well as the electronic release and the lock release mechanism are respectively arranged at the matched positions; the two wiring terminals are respectively electrically communicated with the moving contact and the fixed contact; the moving contact is linked with the lock tripping mechanism; the shell is internally provided with a Hall sensor and a bimetallic strip, the Hall sensor and the bimetallic strip are connected in an electric connection path between one wiring terminal and the corresponding contact, the output of the Hall sensor controls an electronic release through an electric control component arranged in the shell, and the bimetallic strip is matched with the lock release mechanism, so that the Hall sensor and the bimetallic strip are utilized to realize the electronic and mechanical dual overload protection.
The Hall sensor and the bimetallic strip are connected in an electric connection path of the outgoing line terminal and the moving contact.
The Hall sensor and the bimetallic strip are arranged on one side of the length of the shell close to the outgoing line terminal, the Hall sensor is arranged on the lower part, the bimetallic strip is arranged on the upper part, and the Hall sensor and the bimetallic strip are sequentially connected in an electric connection path from the outgoing line terminal to the moving contact; the length dimension of the shell is not more than 90 mm.
The electric control component is arranged at the bottom in the shell and corresponds to the lower surface of the Hall sensor.
The Hall sensor comprises a magnetic ring and a Hall element arranged in the magnetic ring, the output of the Hall element is connected to an MCU in the electric control component, and the output of the MCU is connected to the electronic release so as to realize the control of the electronic release.
The axis of a magnetic ring of the Hall sensor is arranged along the thickness direction of the shell, and the outgoing line terminal is arranged in the middle of the magnetic ring in a penetrating mode.
The Hall element is positioned at the bottom of the magnetic ring.
The outlet terminal comprises a first horizontal section for connecting an external circuit, a first vertical section formed by bending the inner side end of the first horizontal section downwards, a second horizontal section formed by bending the bottom end of the first vertical section towards the horizontal direction and a second vertical section formed by bending the rear end of the second horizontal section upwards; the second horizontal section of the outlet terminal is arranged in the middle of the magnetic ring in a penetrating manner; the top of the second vertical section is in electrical communication with the bi-metallic strip.
And the inner section of the first horizontal section of the outlet terminal is also provided with a first temperature sensor, and the output of the first temperature sensor is connected to the MCU in the electric control component.
The static contact is communicated with the other wiring terminal serving as an incoming line terminal, and the electronic release is connected in an electric connection path from the incoming line terminal to the static contact; the wire inlet terminal comprises a first horizontal section used for being connected with an external circuit, a first vertical section formed by bending the inner side end of the first horizontal section upwards and a second horizontal section formed by bending the top end of the first vertical section horizontally, the second horizontal section of the wire inlet terminal is further provided with a second temperature sensor, and the output of the second temperature sensor is connected to the MCU in the electric control component.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the structure that the Hall sensor and the bimetallic strip are simultaneously arranged in the shell, the Hall sensor and the bimetallic strip are connected in an electric connection path between one wiring terminal and the corresponding contact, the output of the Hall sensor controls the electronic release through an electric control component arranged in the shell, and the bimetallic strip is matched with the lock release mechanism, so that the Hall sensor and the bimetallic strip are utilized to realize the electronic and mechanical dual overload protection. The invention utilizes the characteristic of small volume of the Hall sensor, thereby leading the bimetallic strip to have installation space, realizing that the Hall sensor can be used for current sampling to realize the electronic overload protection of the circuit breaker and vacating the space of installation and movement radius for the bimetallic strip to realize the mechanical overload protection of the circuit breaker in a standard 90mm circuit breaker, and having the characteristics of simple structure, easy assembly and good use effect.
2. According to the invention, the first temperature sensor is arranged at the outlet terminal and the second temperature sensor is arranged at the inlet terminal, so that the first temperature sensor and the second temperature sensor can be used for monitoring the temperature of the two wiring terminals, thereby ensuring the normal use of the circuit breaker.
The invention is further explained in detail with the accompanying drawings and the embodiments; a small-sized smart circuit breaker of the present invention is not limited to the embodiments.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is an exploded perspective view of an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an embodiment of the present invention (with the front shell removed);
FIG. 4 is a front view of an embodiment of the present invention (with the front shell removed);
FIG. 5 is a schematic diagram of the mating of the outlet terminal to the Hall sensor according to an embodiment of the invention;
FIG. 6 is a front view of an outlet terminal of an embodiment of the present invention mated with a Hall sensor (containing an electronic control component);
FIG. 7 is a bottom view of an outlet terminal of an embodiment of the present invention mated to a Hall sensor;
fig. 8 is a schematic diagram illustrating electrical matching between an outlet terminal and a hall sensor according to an embodiment of the invention.
Detailed Description
Examples
Referring to fig. 1 to 8, the small intelligent circuit breaker of the present invention includes a housing 1, two terminals 2 installed at two ends of the length of the housing, and a movable contact 31, a stationary contact 32, an electronic release 4 and a lock release mechanism 5 installed in the housing; the shell 1 consists of a front shell 11 and a rear shell 12, and the front shell 11 and the rear shell 12 are fixed together to form a cavity for installing a moving contact 31, a static contact 32, an electronic release 4 and a lock release mechanism 5; the moving contact 31 and the fixed contact 32 are arranged at the matched positions, and the electronic release 4 and the lock release mechanism 5 are also arranged at the matched positions; the two wiring terminals 2 are respectively electrically communicated with the movable contact 31 and the fixed contact 32; the moving contact 31 is linked with the lock tripping mechanism 5; still be equipped with hall sensor 6 and bimetallic strip 7 in the casing 1 simultaneously, hall sensor 6 with bimetallic strip 7 is connected in the electric connecting path of one of them binding post 21 and corresponding contact, hall sensor 6's output is through the electrically controlled part 8 realization control to electronic release 4 of installation in the casing, bimetallic strip 7 with lock tripping device 5 cooperatees to utilize hall sensor 6 and bimetallic strip 7 to realize electron and mechanical dual overload protection.
In this embodiment, the hall sensor 6 and the bimetal 7 are connected in an electrical connection path between the outlet terminal 21 and the movable contact 31.
In this embodiment, the hall sensor 6 and the bimetal 7 are installed on one side of the length of the housing 1 close to the outgoing terminal 21, the hall sensor 6 is located at the lower part, the bimetal 7 is located at the upper part, and the hall sensor 6 and the bimetal 7 are sequentially connected in an electric connection path from the outgoing terminal 21 to the movable contact 31; the length dimension of the housing 1 is 90 mm.
The upper and lower directions of the present invention are defined to only indicate the relative positional relationship between the members or the structures in the members, and the length of the case is the dimension from the inlet end to the outlet end of the single pole breaker.
This embodiment is a single-pole circuit breaker, and can also be applied to a multi-pole circuit breaker.
In this embodiment, the electric control component 8 is installed at the bottom inside the housing 1 and is correspondingly arranged below the hall sensor 6.
In this embodiment, the hall sensor 6 includes a magnetic ring 61 and a hall element 62 disposed in the magnetic ring, an output of the hall element 62 is connected to an MCU in the electronic control unit 8, and an output of the MCU is connected to the electronic trip 4, so as to control the electronic trip 4.
In this embodiment, the axis of the magnetic ring 61 of the hall sensor 6 is arranged along the thickness direction of the housing 1, and the outlet terminal 21 is inserted in the middle of the magnetic ring 61.
In this embodiment, the hall element 62 is located at the bottom of the magnetic ring 61.
In this embodiment, the outlet terminal 21 includes a first horizontal section 211 for connecting an external line, a first vertical section 212 formed by bending an inner end of the first horizontal section downward, a second horizontal section 213 formed by bending a bottom end of the first vertical section downward and horizontally, and a second vertical section 214 formed by bending a rear end of the second horizontal section upward; the second horizontal section 213 of the outlet terminal 21 is inserted in the middle of the magnetic ring 61; the top of the second vertical section 214 is in electrical communication with the bimetal 7.
In this embodiment, the inner section of the first horizontal section 211 of the outlet terminal 21 is further provided with a first temperature sensor 91, and an output of the first temperature sensor 91 is connected to the MCU in the electronic control unit 8.
In this embodiment, the fixed contact 32 is communicated with another connection terminal serving as the incoming line terminal 22, and the electronic release 4 is connected in an electrical connection path from the incoming line terminal 22 to the fixed contact 32; the inlet terminal 22 comprises a first horizontal section 221 for connecting an external circuit, a first vertical section 222 formed by bending the inner end of the first horizontal section upwards and a second horizontal section 223 formed by bending the top end of the first vertical section horizontally, the second horizontal section 223 of the inlet terminal 22 is also provided with a second temperature sensor 92, and the output of the second temperature sensor 92 is connected to the MCU in the electronic control component 8.
In this embodiment, the circuit breaker further includes a handle 93 and an arc extinguish chamber 94, the handle 93 is installed in the middle of the top of the housing 1, the handle 93 is connected to the lock release mechanism 5 through a connecting rod 95, and the arc extinguish chamber 94 is installed in the housing 1 and is located below the electronic release 4.
The invention relates to a small intelligent circuit breaker, which is characterized in that a Hall sensor 6 and a bimetallic strip 7 are simultaneously arranged in a shell 1, the Hall sensor 6 and the bimetallic strip 7 are connected in an electric connection path of one wiring terminal 21 and a corresponding contact 31, the output of the Hall sensor 6 controls an electronic release 4 through an electric control component 8 arranged in the shell 1, and the bimetallic strip 7 is matched with a lock release mechanism 5, so that the Hall sensor 6 and the bimetallic strip 7 are utilized to realize electronic and mechanical dual overload protection. The invention utilizes the characteristic of small volume of the Hall sensor 6, thereby leading the bimetallic strip 7 to have installation space, realizing that the Hall sensor 6 can be used for current sampling to realize the electronic overload protection of the circuit breaker and vacating the space of installation and movement radius for the bimetallic strip 7 to realize the mechanical overload protection of the circuit breaker in a standard 90mm circuit breaker, and having the characteristics of simple structure, easy assembly and good use effect.
The invention discloses a small intelligent circuit breaker, which adopts the structure that a first temperature sensor 91 is arranged at an outlet terminal 21 and a second temperature sensor 92 is arranged at an inlet terminal 22, and can monitor the temperature of two wiring terminals 2 by using the first temperature sensor 91 and the second temperature sensor 92, thereby ensuring the normal use of the circuit breaker.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims (10)

1. A small-sized intelligent circuit breaker comprises a shell, two wiring terminals arranged at two ends of the length of the shell, and a moving contact, a fixed contact, an electronic release and a lock release mechanism which are arranged in the shell; the moving contact and the static contact as well as the electronic release and the lock release mechanism are respectively arranged at the matched positions; the two wiring terminals are respectively electrically communicated with the moving contact and the fixed contact; the moving contact is linked with the lock tripping mechanism; the method is characterized in that: the shell is internally provided with a Hall sensor and a bimetallic strip, the Hall sensor and the bimetallic strip are connected in an electric connection path between one wiring terminal and the corresponding contact, the output of the Hall sensor controls an electronic release through an electric control component arranged in the shell, and the bimetallic strip is matched with the lock release mechanism, so that the Hall sensor and the bimetallic strip are utilized to realize the electronic and mechanical dual overload protection.
2. A small smart circuit breaker as defined in claim 1, wherein: the Hall sensor and the bimetallic strip are connected in an electric connection path of the outgoing line terminal and the moving contact.
3. A small smart circuit breaker as defined in claim 2, wherein: the Hall sensor and the bimetallic strip are arranged on one side of the length of the shell close to the outgoing line terminal, the Hall sensor is arranged on the lower part, the bimetallic strip is arranged on the upper part, and the Hall sensor and the bimetallic strip are sequentially connected in an electric connection path from the outgoing line terminal to the moving contact; the length dimension of the shell is not more than 90 mm.
4. A small smart circuit breaker as defined in claim 3, wherein: the electric control component is arranged at the bottom in the shell and corresponds to the lower surface of the Hall sensor.
5. A small smart circuit breaker as defined in claim 3, wherein: the Hall sensor comprises a magnetic ring and a Hall element arranged in the magnetic ring, the output of the Hall element is connected to an MCU in the electric control component, and the output of the MCU is connected to the electronic release so as to realize the control of the electronic release.
6. A small smart circuit breaker as defined in claim 5, wherein: the axis of a magnetic ring of the Hall sensor is arranged along the thickness direction of the shell, and the outgoing line terminal is arranged in the middle of the magnetic ring in a penetrating mode.
7. A small smart circuit breaker as defined in claim 6, wherein: the Hall element is positioned at the bottom of the magnetic ring.
8. A small smart circuit breaker as defined in claim 6, wherein: the outlet terminal comprises a first horizontal section for connecting an external circuit, a first vertical section formed by bending the inner side end of the first horizontal section downwards, a second horizontal section formed by bending the bottom end of the first vertical section towards the horizontal direction and a second vertical section formed by bending the rear end of the second horizontal section upwards; the second horizontal section of the outlet terminal is arranged in the middle of the magnetic ring in a penetrating manner; the top of the second vertical section is in electrical communication with the bi-metallic strip.
9. A small smart circuit breaker as recited in claim 8, wherein: and the inner section of the first horizontal section of the outlet terminal is also provided with a first temperature sensor, and the output of the first temperature sensor is connected to the MCU in the electric control component.
10. A small smart circuit breaker as defined in claim 2, wherein: the static contact is communicated with the other wiring terminal serving as an incoming line terminal, and the electronic release is connected in an electric connection path from the incoming line terminal to the static contact; the wire inlet terminal comprises a first horizontal section used for being connected with an external circuit, a first vertical section formed by bending the inner side end of the first horizontal section upwards and a second horizontal section formed by bending the top end of the first vertical section horizontally, the second horizontal section of the wire inlet terminal is further provided with a second temperature sensor, and the output of the second temperature sensor is connected to the MCU in the electric control component.
CN202110291424.8A 2021-03-18 2021-03-18 Small-size intelligent circuit breaker Pending CN113192800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110291424.8A CN113192800A (en) 2021-03-18 2021-03-18 Small-size intelligent circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110291424.8A CN113192800A (en) 2021-03-18 2021-03-18 Small-size intelligent circuit breaker

Publications (1)

Publication Number Publication Date
CN113192800A true CN113192800A (en) 2021-07-30

Family

ID=76973438

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110291424.8A Pending CN113192800A (en) 2021-03-18 2021-03-18 Small-size intelligent circuit breaker

Country Status (1)

Country Link
CN (1) CN113192800A (en)

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PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20240201

Address after: No.560-564 Donglin Road, Jimei North Industrial Zone, Jimei District, Xiamen City, Fujian Province

Applicant after: XIAMEN HONGFA AUTOMOTIVE ELECTRONICS Co.,Ltd.

Country or region after: China

Address before: No.566 Donglin Road, Jimei North Industrial Zone, Xiamen City, Fujian Province

Applicant before: XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS Co.,Ltd.

Country or region before: China

TA01 Transfer of patent application right