Circuit breaker and electric equipment

Abstract

The utility model discloses a circuit breaker and electric equipment, and relates to the technical field of low-voltage electric appliances, and the circuit breaker comprises an assembly housing, a thermal element, a control circuit board, a temperature sensor and a transformer. The assembling shell is provided with an assembling cavity. The thermal element is installed in the assembly cavity and is electrically connected to a main loop of the circuit breaker. The control circuit board is installed in the assembly cavity, and the control circuit board is electrically connected with a tripping assembly of the circuit breaker. The temperature sensor comprises a detection end and a connection end, the detection end is connected with the thermal element, and the connection end is electrically connected with the control circuit board. The transformer is installed on the control circuit board, the temperature sensor can collect the real-time temperature of the thermal element to generate a corresponding temperature signal and transmit the temperature signal to the control circuit board, and the control circuit board can output a preset multiple of circuit break voltage or current to a control part of the tripping assembly to change the tripping efficiency of the tripping assembly. The circuit breaker can have higher flexibility and accuracy, and the tripping efficiency of the tripping assembly can be changed according to needs.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and in particular to a circuit breaker and electrical equipment. Background Technology

[0002] In related technical fields, circuit breakers, such as molded case circuit breakers, are important components in low-voltage power distribution systems, playing a role in overload and short-circuit protection in the lines. Therefore, general circuit breakers have over-protection (thermal protection) and short-circuit protection (magnetic protection).

[0003] There are two types of molded case circuit breakers on the market: thermal-magnetic and electronic. They achieve their protective functions through the conversion of thermal energy and magnetic energy, respectively. Thermal-magnetic circuit breakers convert electrical energy into thermal energy, and then into mechanical energy, using the deformation of a bimetallic strip to trigger the tripping mechanism. Electronic circuit breakers convert electrical energy into magnetic energy, then back into electrical energy, and finally into mechanical energy, using a current transformer and circuit board to control the tripping.

[0004] However, existing circuit breakers cannot achieve adjustable thermal protection and cannot more easily adapt to different load conditions. Utility Model Content

[0005] This application provides a circuit breaker and electrical equipment that enables the circuit breaker to have greater flexibility and accuracy, can change the tripping efficiency of the tripping component as needed, and can accurately set a suitable temperature threshold based on collected temperature feedback data.

[0006] In a first aspect, this application provides a circuit breaker, which includes a housing, a thermal element, a control circuit board, a temperature sensor, and a transformer.

[0007] The assembly housing has an assembly cavity. A heating element is installed in the assembly cavity and electrically connected to the main circuit of the circuit breaker. A control circuit board is installed in the assembly cavity and electrically connected to the tripping assembly of the circuit breaker. A temperature sensor includes a detection terminal and a connection terminal; the detection terminal is connected to the heating element, and the connection terminal is electrically connected to the control circuit board. A transformer is installed on the control circuit board; the transformer can change the voltage, current, or impedance in the corresponding circuit.

[0008] The temperature sensor can collect the real-time temperature of the thermal element to generate a corresponding temperature signal and transmit the temperature signal to the control circuit board. The control circuit board can output a preset multiple of the circuit breaking voltage or current to the control part of the tripping component based on the temperature signal, so as to change the tripping efficiency of the tripping component.

[0009] In the above structure, the assembly housing includes a base and a housing, which together form an assembly cavity. The base has mounting slots, in which the thermal element and control circuit board are respectively installed. Within the assembly cavity, the thermal element can be precisely installed and fixed. The thermal element is directly electrically connected to the main circuit of the circuit breaker, ensuring normal current flow and rapid disconnection when necessary. Simultaneously, the control circuit board is also installed within the assembly cavity, and it has a close electrical connection with the circuit breaker's tripping assembly, ensuring accurate transmission of control signals.

[0010] The temperature sensor consists of two parts: a sensing end and a connection end. The sensing end is connected to the thermal element, enabling real-time monitoring of the thermal element's operating temperature; the connection end is connected to the control circuit board, ensuring that the temperature signal is accurately transmitted to the control circuit board.

[0011] The function of the temperature sensor is to continuously monitor the temperature changes of the thermal element and generate corresponding temperature signals based on these changes. These temperature signals are then transmitted to the control circuit board, which, based on the received temperature signals, issues commands to the control section of the tripping assembly. These commands may be preset multiples of the tripping voltage, current, or impedance to ensure that the circuit breaker can promptly disconnect the circuit when the temperature exceeds a safe threshold, thereby protecting the entire circuit system from damage.

[0012] Transformers in circuits can flexibly adjust the voltage, current, or impedance of corresponding circuits according to actual needs, ensuring stable circuit operation and achieving the effect of outputting a preset multiple of the breaking voltage and current towards hot elements. This design not only improves the adaptability and flexibility of circuit breakers but also further enhances their safety performance.

[0013] The preset multiples of circuit breaker voltage, current, or impedance can be adjusted according to different application scenarios and requirements. For example, in high-temperature environments, a higher multiple of circuit breaker voltage, current, or impedance may be needed to ensure that the circuit breaker can respond quickly and disconnect the circuit, preventing safety accidents such as equipment overheating or fires. In some application scenarios with lower temperature sensitivity, a lower multiple of circuit breaker voltage, current, or impedance can be set to reduce unnecessary circuit interruptions and improve the stability and reliability of the equipment.

[0014] The above structure allows for flexible switching of circuit breaking voltage or current by adjusting a preset multiplier without changing the circuit breaker model. For example, in different circuits, the required safe voltage or current will vary due to differences in the type and power of the load appliances. To meet these different requirements, the preset multiplier of the current or voltage can be adjusted according to the actual situation. The following two specific examples will further illustrate these processes:

[0015] In some situations, electrical appliances in a load may briefly exceed the safe voltage. However, as long as the voltage quickly returns to a safe level, these appliances can continue to operate normally. In this case, a very high instantaneous response speed of the circuit breaker is not required. Instead, the appliances can continue to operate after the fault is automatically cleared. To accommodate this requirement, the safety threshold can be appropriately increased, thereby delaying the circuit breaker's tripping time. Specifically, the current or voltage corresponding to the thermal element can be reduced to slow down the temperature rise of the thermal element, thus extending the tripping time of the tripping component. In this way, if the circuit can return to normal within a certain time, the circuit breaker will not trip. In cases of more severe faults, the circuit breaker may still need to trip after a certain period of time.

[0016] In other cases, electrical appliances in a load may be immediately damaged if their voltage exceeds the safe level for a short period. In such situations, the circuit breaker needs a faster response time to quickly trip and disconnect the circuit, preventing damage to the appliances. In this case, the safety threshold can be adjusted lower to shorten the circuit breaker's tripping time. Correspondingly, the current or voltage corresponding to the heating element can be appropriately increased to improve the heating efficiency of the heating element, thereby shortening the tripping time of the tripping assembly. In this way, the tripping assembly can quickly meet the tripping requirements within a short time, promptly disconnecting the circuit and reducing damage to appliances caused by circuit abnormalities.

[0017] The aforementioned preset multiplier adjustment can be performed before the circuit breaker is connected to the corresponding circuit. At this time, the circuit parameters are known, and the preset multiplier can be adjusted based on these parameters to ensure that the circuit breaker can adapt to the needs of the specific circuit.

[0018] The circuit breaker of this application achieves precise monitoring and control of the temperature of thermal elements by incorporating components such as a temperature sensor, control circuit board, and transformer. By acquiring the real-time temperature of the thermal elements and generating a corresponding temperature signal, the control circuit board can output a preset multiple of the tripping voltage or current to the control section of the tripping assembly, thereby protecting the circuit. This design not only improves the flexibility and accuracy of the circuit breaker but also allows for precise setting of appropriate temperature thresholds according to actual needs, better adapting to different load conditions. Furthermore, the circuit breaker of this application has advantages such as simple structure and ease of implementation, and can be widely used in various low-voltage electrical appliance fields, providing strong protection for the safe operation of circuits.

[0019] In some examples, the control circuit board is equipped with a gear adjustment component connected to the transformer. The gear adjustment component has at least two gears, each corresponding to at least one different temperature threshold. Under different temperature thresholds, the control circuit board adjusts in different ways.

[0020] By adjusting the temperature threshold, users can select the appropriate temperature protection range according to their actual needs, thereby achieving more precise control over the circuit breaker. For example, in high-temperature environments, a higher temperature threshold can be selected to avoid false tripping due to excessively high ambient temperatures; while in situations requiring strict temperature control, a lower temperature threshold can be selected to ensure the equipment operates within a safe temperature range. This design not only improves the flexibility and adaptability of the circuit breaker but also helps extend its service life and reduce unnecessary downtime.

[0021] In some examples, the circuit breaker includes at least one main circuit, each main circuit having a thermal element, each thermal element having a temperature sensor, and all temperature sensors being connected to a common control circuit board.

[0022] This design allows each main circuit to perform independent temperature monitoring and circuit breaking control, improving the reliability and safety of the entire circuit breaker system. When a temperature sensor on a main circuit detects an abnormal temperature, the control circuit board can respond quickly, breaking the circuit only in that main circuit without affecting other normally operating main circuits. Furthermore, the shared control circuit board design simplifies the circuit structure, reduces manufacturing costs, and facilitates subsequent maintenance and repair.

[0023] In some examples, at least one partition plate is provided inside the assembly cavity, dividing the assembly cavity into at least two assembly sub-cavities, each of which is equipped with a thermal element.

[0024] This partitioned design not only optimizes the space utilization of the assembly chamber but also improves the ease of installation and maintenance of thermal elements. Each assembly sub-chamber is relatively independent, effectively isolating thermal interference between different thermal elements and ensuring the accuracy of temperature monitoring. Simultaneously, the partition plates provide additional support and protection for the thermal elements, enhancing the overall stability of the circuit breaker structure. During assembly and maintenance, workers can operate on specific assembly sub-chambers without disassembling the entire assembly chamber, thereby improving work efficiency.

[0025] In some examples, the partition is an integral partition that is set together with the assembly housing, and the integral partition divides the assembly cavity and forms at least two assembly sub-cavities.

[0026] Alternatively, the partition plate can be a split partition plate, which is detachably connected to the assembly housing. After the split partition plate is installed in the assembly cavity, it divides the assembly cavity and forms at least two assembly sub-cavities.

[0027] Alternatively, the partition can be partially designed as a single unit and partially as a separate unit.

[0028] This design flexibility ensures that the circuit breaker can adapt to different application scenarios and requirements. The integrated partition design, being integrally formed with the assembly housing, provides higher structural strength and stability, making it suitable for applications requiring high structural strength of the circuit breaker. At the same time, the production and installation process of the integrated partition is relatively simplified, helping to improve production efficiency and reduce costs.

[0029] The modular partition design offers greater flexibility and maintainability. The modular partition is detachably connected to the housing, allowing for easier disassembly and reinstallation of the partition when adjustments or replacements of thermal elements are needed, without requiring the entire circuit breaker to be disassembled. This significantly improves the convenience and efficiency of maintenance.

[0030] Furthermore, the partially integrated and partially separate design combines the advantages of both of the above designs, ensuring structural strength and stability while providing sufficient flexibility and maintainability. This design allows for flexible selection of the type and installation method of the partition panels according to specific application needs and scenarios, thus meeting different usage requirements.

[0031] In some examples, the partition plate has wiring channels through which the connecting wires of the temperature sensor pass.

[0032] The design of the cable trays not only helps to organize the connecting wires of the temperature sensors, making them neat and orderly, but also effectively avoids the mess and interference of wires inside the circuit breaker. Furthermore, the cable trays can provide some protection and support for the wires, preventing damage or interference from external forces during circuit breaker operation. This not only improves the overall reliability and safety of the circuit breaker, but also makes the internal structure of the circuit breaker clearer and easier to maintain.

[0033] In some examples, the control circuit board is configured as an integrated circuit board, which is electrically connected to the temperature sensor and can acquire the temperature signal from the temperature sensor. At the same time, the integrated circuit board is electrically connected to the control part of the trip assembly. The transformer is installed on the integrated circuit board, which can output a preset multiple of the circuit breaking voltage or current to the control part of the trip assembly based on the temperature signal.

[0034] Alternatively, the control circuit board can be configured as a separate circuit board, including a data acquisition sub-board and a control sub-board. The data acquisition sub-board and the control sub-board are electrically connected. The data acquisition sub-board is electrically connected to the temperature sensor and can acquire the temperature signal from the temperature sensor. The control sub-board is electrically connected to the control section of the tripping assembly. A transformer is installed on the control sub-board, and the control sub-board can output a preset multiple of the circuit-breaking voltage or current to the control section of the tripping assembly based on the temperature signal.

[0035] In the above structure, the control circuit board can be designed as an integrated circuit board structure. This integrated circuit board is directly electrically connected to the temperature sensor, thereby effectively acquiring the temperature signal from the temperature sensor. In addition, the integrated circuit board is also electrically connected to the control part of the tripping assembly, so that it can output a pre-set multiple of the circuit-breaking voltage, current, or impedance value to the control part of the tripping assembly based on the acquired temperature signal.

[0036] In another configuration, the control circuit board can be constructed as a split circuit board structure, comprising two main parts: a data acquisition sub-board and a control sub-board. These two sub-boards work together via electrical connections. The data acquisition sub-board is responsible for electrical connection with the temperature sensor and accurately acquires the temperature signal emitted by the sensor. The control sub-board, on the other hand, is electrically connected to the control section of the tripping assembly, ensuring that based on the acquired temperature signal, it can output a pre-set multiple of the circuit-breaking voltage, current, or impedance value to the control section of the tripping assembly to protect the circuit.

[0037] In some examples, a protective cover is provided on the outer periphery of the control circuit board.

[0038] The function of a protective cover is to physically protect the control circuit board from dust, moisture, or other contaminants in the external environment, thereby ensuring the normal operation of the control circuit board and extending its service life. Protective covers are typically made of insulating materials, possessing good weather resistance and mechanical strength, and can effectively resist the erosion of the external environment.

[0039] In some examples, the protective cover has a snap-fit ​​structure to which the control circuit board snaps. When the control circuit board includes at least two sub-boards, the different sub-boards snap to different snap-fit ​​structures.

[0040] Alternatively, a fixing structure can be installed inside the protective cover, and the control circuit board can be fixedly connected to the corresponding fixing structure. When the control circuit board includes at least two sub-boards, the different sub-boards are fixedly connected to different fixing structures.

[0041] In the above structure, the interior of the protective cover can be designed with snap-fit ​​structures, which are used to snap or fix the control circuit board to it. When the control circuit board consists of at least two sub-boards, each sub-board can be snapped to a different snap-fit ​​structure, thus ensuring that each sub-board is securely connected in the proper position.

[0042] Additionally, the protective cover may contain internal fixing structures for securely attaching the control circuit board to it. Similarly, if the control circuit board consists of multiple sub-boards, each sub-board can be fixedly attached to a different fixing structure, thereby achieving stable fixation of each sub-board.

[0043] Secondly, this application provides an electrical device, including a device body and a circuit breaker as described above, wherein the circuit breaker is electrically connected to the device body.

[0044] By employing the aforementioned circuit breakers, electrical equipment benefits from enhanced flexibility and precision. The circuit breakers can accurately set appropriate temperature thresholds based on collected temperature feedback data, effectively protecting the circuit and preventing damage or safety accidents caused by overcurrent, overload, or short circuits. Furthermore, the optimized internal spatial layout and electromagnetic compatibility design of the circuit breakers ensure more stable and reliable operation, reducing the likelihood of malfunctions. In addition, the ease of maintenance and replacement makes subsequent maintenance and management more convenient, reducing maintenance costs and time. Therefore, this electrical equipment has broad application prospects in power systems. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the examples or prior art description will be briefly introduced below. Obviously, the drawings described below are only some examples of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 This is an exploded structural diagram of a circuit breaker in one example of this application.

[0047] Figure 2 This is a schematic diagram of the circuit breaker in one example of this application after it is concealed in the assembly housing.

[0048] Figure 3 This is a schematic diagram of the structure of the control circuit board and tripping assembly in a circuit breaker in one example of this application.

[0049] Figure 4 This is a schematic diagram of another structure of the circuit breaker in one example of this application, where the control circuit board and the tripping assembly are in cooperation.

[0050] Figure 5 This is a schematic diagram of the structure of an integrated circuit board in a circuit breaker, as shown in one example of this application.

[0051] Figure 6This is an exploded view of the structure of a circuit breaker in one example of this application, where the control circuit board and the tripping assembly are combined, and the control circuit board is a separate circuit board.

[0052] Figure 7 This is a schematic diagram of the partition plate in a circuit breaker in one example of this application.

[0053] Figure label:

[0054] 100. Assembly housing; 110. Base; 120. Cover; 130. Assembly cavity; 140. Divider plate; 141. Wiring trough; 200. Heating element; 300. Control circuit board; 310. Data acquisition circuit sub-board; 320. Control circuit sub-board; 330. Protective cover; 331. Snap-fit ​​structure; 340. Gear adjustment assembly; 341. Knob; 342. Dial switch; 350. Slot; 360. Transformer; 400. Temperature sensor; 410. Detection end; 420. Connection end; 430. Connecting wire; 500. Tripping assembly. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described herein are merely illustrative and not intended to limit the scope of this application.

[0056] To solve the above technical problems, please refer to Figures 1-7 As shown, the first aspect of this application proposes a circuit breaker that enables the circuit breaker to have greater flexibility and accuracy, can change the tripping efficiency of the tripping component as needed, and can accurately set a suitable temperature threshold based on the collected temperature feedback data.

[0057] Reference Figures 1 to 3 In some examples, the circuit breaker includes a housing 100, a thermal element 200, a control circuit board 300, a temperature sensor 400, and a transformer 360.

[0058] The assembly housing 100 has an assembly cavity 130. A heating element 200 is installed in the assembly cavity 130 and is electrically connected to the main circuit of the circuit breaker. A control circuit board 300 is installed in the assembly cavity 130 and is electrically connected to the tripping assembly 500 of the circuit breaker. A temperature sensor 400 includes a detection terminal 410 and a connection terminal 420; the detection terminal 410 is connected to the heating element 200, and the connection terminal 420 is electrically connected to the control circuit board 300. A transformer 360 is installed on the control circuit board 300 and can change the voltage, current, or impedance in the corresponding circuit.

[0059] The temperature sensor 400 can collect the real-time temperature of the thermal element 200 to generate a corresponding temperature signal and transmit the temperature signal to the control circuit board 300. The control circuit board 300 can output a preset multiple of the circuit breaking voltage or current to the control part of the trip assembly 500 based on the temperature signal to change the tripping efficiency of the trip assembly 500.

[0060] The transformer 360 can flexibly adjust the voltage, current, or impedance in the circuit according to actual needs, ensuring stable circuit operation. It can also output a preset multiple of the breaking voltage and current to the thermal element 200. This design not only improves the adaptability and flexibility of the circuit breaker but also further enhances its safety performance.

[0061] Specifically, in this circuit breaker, transformer 360 is mounted on control circuit board 300. The main function of transformer 360 is to change the voltage, current, or impedance in the corresponding circuit. This capability allows the circuit to be flexibly adjusted according to actual needs, ensuring stable circuit operation. In particular, transformer 360 can output a preset multiple of the breaking voltage or current towards the thermal element 200. This is achieved through the synergistic effect with other components of the circuit breaker, such as control circuit board 300 and tripping assembly 500. When temperature sensor 400 detects the real-time temperature of thermal element 200 and generates a corresponding temperature signal, control circuit board 300 can adjust the output voltage or current through transformer 360 based on this temperature signal, thereby achieving circuit protection and control. This design not only improves the adaptability and flexibility of the circuit breaker but also significantly enhances its safety performance.

[0062] In the above structure, the assembly housing 100 includes a base 110 and a housing, which together form an assembly cavity 130. The base 110 has mounting slots, in which the heating element 200 and the control circuit board 300 are respectively installed. Within the assembly cavity 130, the heating element 200 can be precisely installed and fixed. The heating element 200 is directly electrically connected to the main circuit of the circuit breaker, ensuring normal current flow and rapid disconnection when necessary. Simultaneously, the control circuit board 300 is also installed within the assembly cavity 130, and it has a close electrical connection with the circuit breaker's tripping assembly 500, ensuring accurate transmission of control signals.

[0063] The temperature sensor 400 includes two parts: a detection end 410 and a connection end 420. The detection end 410 is connected to the thermal element 200 and can monitor the operating temperature of the thermal element 200 in real time; the connection end 420 is connected to the control circuit board 300 to ensure that the temperature signal can be accurately transmitted to the control circuit board 300.

[0064] The function of temperature sensor 400 is to continuously monitor the temperature changes of thermal element 200 and generate corresponding temperature signals based on these changes. The temperature signals are then transmitted to control circuit board 300, which, based on the received temperature signals, issues commands to the control section of trip assembly 500. These commands may be preset multiples of the tripping voltage, current, or impedance to ensure that the circuit breaker can promptly disconnect the circuit when the temperature exceeds a safe threshold, thereby protecting the entire circuit system from damage.

[0065] The preset multiples of circuit breaker voltage, current, or impedance can be adjusted according to different application scenarios and requirements. For example, in high-temperature environments, a higher multiple of circuit breaker voltage, current, or impedance may be needed to ensure that the circuit breaker can respond quickly and disconnect the circuit, preventing safety accidents such as equipment overheating or fires. In some application scenarios with lower temperature sensitivity, a lower multiple of circuit breaker voltage, current, or impedance can be set to reduce unnecessary circuit interruptions and improve the stability and reliability of the equipment.

[0066] In the proposed solution, a suitable temperature threshold can be precisely set based on the collected temperature feedback data and relevant standards. When the control circuit board 300 detects a temperature signal, it processes the signal and sends a corresponding control command to the tripping component 500 according to the preset temperature threshold. Once the signal value received by the signal processing board exceeds the set threshold, the tripping component 500 will execute the corresponding action. It is worth noting that these threshold settings can be flexibly adjusted to meet the needs of different markets and customers. During use, customers can select the appropriate threshold level by rotating the knob 341 according to their specific needs.

[0067] The above structure allows for flexible switching of circuit breaking voltage or current by adjusting a preset multiplier without changing the circuit breaker model. For example, in different circuits, the required safe voltage or current will vary due to differences in the type and power of the load appliances. To meet these different requirements, the preset multiplier of the current or voltage can be adjusted according to the actual situation. The following two specific examples will further illustrate these processes:

[0068] In some cases, electrical appliances in a load may briefly exceed the safe voltage, but as long as the voltage quickly returns to a safe level, these appliances can continue to operate normally. In this situation, a very high instantaneous response speed of the circuit breaker is not required. Instead, the appliances can continue to operate after the fault is automatically cleared. To accommodate this requirement, the safety threshold can be appropriately increased, thereby delaying the circuit breaker's tripping time. Specifically, the current or voltage corresponding to the thermal element 200 can be reduced to slow down the heating efficiency of the thermal element 200, thus extending the tripping time of the tripping assembly 500. In this way, if the circuit can return to normal within a certain time, the circuit breaker will not perform a tripping operation. In this case, if the fault is more severe, the circuit breaker will still need to trip after a certain period of time.

[0069] In other cases, electrical appliances in a load may be immediately damaged if their voltage exceeds the safe level for a short period. In such situations, the circuit breaker needs a faster response time to quickly trip and disconnect the circuit, preventing damage to the appliances. In this case, the safety threshold can be adjusted lower to shorten the circuit breaker's tripping time. Correspondingly, the current or voltage corresponding to the heating element 200 can be appropriately increased to improve the heating efficiency of the heating element 200, thereby shortening the tripping time of the tripping assembly 500. In this way, the tripping assembly 500 can quickly meet the tripping requirements within a short time, promptly disconnecting the circuit and reducing damage to appliances caused by circuit abnormalities.

[0070] The aforementioned preset multiplier adjustment can be performed before the circuit breaker is connected to the corresponding circuit. At this time, the circuit parameters are known, and the preset multiplier can be adjusted based on these parameters to ensure that the circuit breaker can adapt to the needs of the specific circuit.

[0071] The circuit breaker of this application, through the inclusion of components such as a temperature sensor 400, a control circuit board 300, and a transformer 360, achieves precise monitoring and control of the temperature of the thermal element 200. By acquiring the real-time temperature of the thermal element 200 and generating a corresponding temperature signal, the control circuit board 300 can output a preset multiple of the tripping voltage or current to the control section of the tripping assembly 500 based on this temperature signal, thereby protecting the circuit. This design not only improves the flexibility and accuracy of the circuit breaker but also allows for precise setting of appropriate temperature thresholds according to actual needs, better adapting to different load conditions. Furthermore, the circuit breaker of this application has advantages such as simple structure and ease of implementation, and can be widely used in various low-voltage electrical appliance fields, providing strong protection for the safe operation of circuits.

[0072] By adopting this intelligent adjustment method, users can easily adjust the temperature threshold. Compared with traditional mechanical thermal switches, this method offers greater flexibility and accuracy. Furthermore, compared with ordinary electronic thermal switches, it saves on the cost of a current transformer processor. In addition, this system can be easily upgraded in the future to achieve intelligent networking, enabling remote monitoring and control, and other advanced operations, thus providing users with a more intelligent and convenient solution.

[0073] In addition, the circuit breaker of this application may also include other auxiliary components, such as indicator lights and alarms, to facilitate users' real-time monitoring of the circuit breaker's operating status and fault conditions. For example, when the temperature sensor 400 detects that the temperature of the thermal element 200 is too high, it can issue a warning to the user through an indicator light or alarm, reminding the user to take timely measures to avoid safety accidents.

[0074] The circuit breaker described in this application has a simple structure and is highly practical, effectively improving the safety and reliability of the circuit.

[0075] Furthermore, the inner wall of the housing 100 is provided with a slide rail, through which the control circuit board 300 is slidably connected to the housing, facilitating the installation and removal of the control circuit board 300. Simultaneously, the outer side of the housing is provided with heat dissipation holes, which can effectively dissipate the heat generated inside the circuit breaker, ensuring its normal operation. In addition, the base 110 is also provided with wiring terminals for connecting external power supplies and loads to achieve circuit on / off control.

[0076] Furthermore, the assembly housing 100 of this application can be made of insulating material, possessing excellent heat resistance and insulation properties to ensure the safety of the circuit breaker during operation. The thermal element 200, as a key component, employs a highly sensitive thermistor material, capable of rapidly responding to heat changes generated during current overload or short circuit. The control circuit board 300 integrates advanced electronic control technology to achieve precise control of the circuit breaker tripping assembly 500.

[0077] The temperature sensor 400 employs high-precision, high-stability components such as thermistors or thermocouples to ensure accurate temperature signal acquisition. The sensing end 410 is directly attached to the heating element 200, enabling real-time sensing of temperature changes and converting these changes into electrical signals. The connection end 420 connects to the control circuit board 300 via wires to transmit the temperature signal.

[0078] When the temperature sensor 400 detects that the temperature of the thermal element 200 exceeds a preset threshold, it immediately generates a corresponding temperature signal and transmits it to the control circuit board 300. Upon receiving the temperature signal, the control circuit board 300 quickly analyzes and processes it, calculating the required multiple of the circuit-breaking voltage, current, or impedance based on a preset algorithm. Then, the control circuit board 300 outputs a corresponding circuit-breaking command to the control section of the tripping assembly 500, causing the circuit breaker to quickly disconnect the circuit, thereby protecting the safety of the circuit and equipment.

[0079] The circuit breaker may also include a display module to display information such as the current temperature, set temperature, and operating status, making it convenient for users to monitor and operate.

[0080] The circuit breaker also includes a manual adjustment knob 341, which allows users to set the temperature threshold and achieve precise control of the circuit breaker's thermal protection function.

[0081] The thermal element 200 can be a bimetallic strip with excellent thermal sensitivity and mechanical strength, which can quickly respond to temperature changes and drive the trip assembly 500 to operate.

[0082] The control circuit board 300 can be equipped with a protection circuit, which can protect the circuit from damage under abnormal conditions such as overload and short circuit, thereby improving the reliability and safety of the circuit breaker.

[0083] The circuit breaker described in this application is suitable for various low-voltage electrical equipment, such as household circuits and industrial production lines, and can effectively protect and control the circuit.

[0084] The performance and stability of the thermal element 200 have a significant impact on the overall performance of the circuit breaker. In some examples, the thermal element 200 employs a bimetallic strip structure, which can expand, contract, or bend when the temperature rises, thereby triggering the trip assembly 500 to achieve circuit breaker tripping protection. Simultaneously, the selection of materials and design of the thermal element 200 must also consider parameters such as its resistivity, heat capacity, and coefficient of thermal expansion to ensure its reliability and stability under different operating conditions.

[0085] As the intelligent control component of the circuit breaker, the control circuit board 300 can perform functions such as temperature signal acquisition, processing, and control output. In some examples, the control circuit board 300 uses a microprocessor as the control core, enabling complex algorithms and logic control, thereby improving the intelligence and reliability of the circuit breaker. Simultaneously, the control circuit board 300 can also employ a circuit design with strong anti-interference performance to improve its stability and reliability in complex electromagnetic environments.

[0086] Reference Figure 3 and Figure 4In some examples, the control circuit board 300 is provided with a gear adjustment component 340 connected to the transformer 360. The gear adjustment component 340 is provided with at least two gears, and different gears correspond to at least one different temperature threshold. Under different temperature thresholds, the adjustment method of the control circuit board 300 is different.

[0087] By adjusting the temperature threshold, users can select the appropriate temperature protection range according to their actual needs, thereby achieving more precise control over the circuit breaker. For example, in high-temperature environments, a higher temperature threshold can be selected to avoid false tripping due to excessively high ambient temperatures; while in situations requiring strict temperature control, a lower temperature threshold can be selected to ensure the equipment operates within a safe temperature range. This design not only improves the flexibility and adaptability of the circuit breaker but also helps extend its service life and reduce unnecessary downtime.

[0088] The temperature setting adjustment assembly 340 may include a knob 341 and a dial 342 mounted on the control circuit board 300. These components are designed to adjust the temperature setpoint. Users can precisely adjust the temperature by operating the knob 341 on the dial 342 to meet different temperature control needs.

[0089] The knob 341 is designed to be intuitive and easy to use. Users can rotate the knob 341 to gradually adjust the temperature setpoint for precise temperature control. The switches on the dial 342 are used to select different temperature ranges or adjustment steps to suit various application scenarios and needs. This design makes the gear adjustment component 340 highly flexible, easy to operate and maintain, providing users with great convenience.

[0090] For example, the gear adjustment component 340 is equipped with two gears, namely the first gear and the second gear. Each gear has a temperature threshold. The first gear corresponds to the first temperature threshold, and the second gear corresponds to the second temperature threshold.

[0091] At this point, the control methods may include:

[0092] Based on the first setting, when the temperature detected by the temperature sensor 400 is lower than the first temperature threshold, the circuit breaker conducts normally, and there is no safety hazard in the corresponding main circuit, so no circuit breaking operation is required. When the temperature detected by the temperature sensor 400 is higher than the first temperature threshold, there is a safety hazard in the corresponding main circuit, and the circuit breaker needs to break the circuit. Based on the temperature signal at this time, the control circuit board 300 outputs a circuit breaking voltage, current, or impedance of a first preset multiple to the control part of the trip assembly 500 to realize the circuit breaking operation.

[0093] Based on the second setting, when the temperature detected by the temperature sensor 400 is lower than the second temperature threshold, the circuit breaker conducts normally, and there is no safety hazard in the corresponding main circuit, so no circuit breaking operation is required. When the temperature detected by the temperature sensor 400 is higher than the second temperature threshold, there is a safety hazard in the corresponding main circuit, and the circuit breaker needs to break the circuit. Based on the temperature signal at this time, the control circuit board 300 outputs a second preset multiple of breaking voltage, current, or impedance to the control part of the trip assembly 500 to realize the circuit breaking operation.

[0094] The preset multiples mentioned above can be positive integers, such as multiples of 1, 2, 3, 4, 5, 6, 7, 8, and 9. They can also be decimals, such as multiples of 0.1, 0.2, 0.3, 0.4, 0.5, 0.8, and 0.9. Alternatively, they can be multiples of 1.2, 1.5, 2.5, 3.5, and 4.5. Adjustments can be made as needed.

[0095] With each gear setting having two temperature thresholds, the first gear setting corresponds to the third and fourth temperature thresholds, and the second gear setting corresponds to the fifth and sixth temperature thresholds.

[0096] At this point, the control methods may include:

[0097] Based on the first setting, when the temperature detected by the temperature sensor 400 is lower than the third temperature threshold, the circuit breaker will conduct normally, there is no safety hazard in the corresponding main circuit, and no circuit breaking operation is required.

[0098] When the temperature detected by the temperature sensor 400 is higher than the third temperature threshold but lower than the fourth temperature threshold, the circuit breaker is normally conducting. The corresponding main circuit has a low safety risk and is still within a controllable range. There is no need to perform a circuit breaking operation. Based on the temperature signal at this time, the control circuit board 300 outputs a circuit breaking voltage, current or impedance of a third preset multiple (the multiple can be a decimal less than 1) to the control part of the trip assembly 500 to maintain the normal conduction of the circuit breaker.

[0099] When the temperature detected by the temperature sensor 400 is higher than the fourth temperature threshold, there is a significant safety hazard in the corresponding main circuit, and the circuit breaker needs to perform a circuit breaking operation. Based on the temperature signal at this time, the control circuit board 300 outputs a circuit breaking voltage, current or impedance that is a fourth preset multiple to the control part of the trip assembly 500 to realize the circuit breaking of the circuit breaker.

[0100] The control method for the second gear is similar to that described above, except for the change and adjustment of parameters, which will not be repeated here.

[0101] In some examples, the circuit breaker includes at least one main circuit, each main circuit having a thermal element 200, each thermal element 200 having a temperature sensor 400, and all temperature sensors 400 being connected to a common control circuit board 300.

[0102] This design allows each main circuit to perform independent temperature monitoring and circuit breaking control, improving the reliability and safety of the entire circuit breaker system. When the temperature sensor 400 on a main circuit detects an abnormal temperature, the control circuit board 300 can respond quickly, breaking the circuit only on that main circuit without affecting other normally operating main circuits. Furthermore, the shared control circuit board 300 design simplifies the circuit structure, reduces manufacturing costs, and facilitates subsequent maintenance and repair.

[0103] Reference Figure 5 and Figure 6 In some examples, the control board 300 is configured as an integrated board (see reference). Figure 5 The integrated circuit board is electrically connected to the temperature sensor 400 and can collect the temperature signal of the temperature sensor 400. At the same time, the integrated circuit board is electrically connected to the control part of the trip assembly 500. The transformer 360 is installed on the integrated circuit board. The integrated circuit board can output a preset multiple of the circuit breaking voltage or current to the control part of the trip assembly 500 based on the temperature signal.

[0104] Alternatively, the control circuit board 300 can be configured as a separate circuit board (see reference). Figure 6 The system includes a data acquisition sub-board 310 and a control sub-board 320, which are electrically connected. The data acquisition sub-board 310 is electrically connected to a temperature sensor 400 and can acquire the temperature signal from the temperature sensor 400. The control sub-board 320 is electrically connected to the control section of the trip assembly 500. A transformer 360 is mounted on the control sub-board 320, which can output a preset multiple of the circuit-breaking voltage or current to the control section of the trip assembly 500 based on the temperature signal.

[0105] In the above structure, the control circuit board 300 can be designed as an integrated circuit board structure. This integrated circuit board is directly electrically connected to the temperature sensor 400, thereby effectively acquiring the temperature signal from the temperature sensor 400. In addition, the integrated circuit board is also electrically connected to the control part of the trip assembly 500, so that it can output a pre-set multiple of the circuit-breaking voltage, current, or impedance value to the control part of the trip assembly 500 based on the acquired temperature signal.

[0106] In another configuration, the control circuit board 300 can also be constructed as a split circuit board structure, comprising two main parts: a data acquisition sub-board 310 and a control circuit sub-board 320. These two sub-boards cooperate with each other via electrical connections. The data acquisition sub-board 310 is responsible for electrical connection with the temperature sensor 400 and can accurately acquire the temperature signal emitted by the temperature sensor 400. The control circuit sub-board 320 is electrically connected to the control section of the trip assembly 500, ensuring that based on the acquired temperature signal, the control circuit sub-board 320 can output a pre-set multiple of the circuit-breaking voltage, current, or impedance value to the control section of the trip assembly 500 to protect the circuit.

[0107] Furthermore, in some embodiments, the acquisition circuit sub-board 310 and the control circuit sub-board 320 are connected via a flexible printed circuit board (FPC) to increase the reliability and flexibility of the connection. In addition, the integrated or separate circuit board is equipped with protection circuitry to prevent damage to the circuit board due to abnormal conditions such as overcurrent or overvoltage. Protection circuitry includes, but is not limited to, components such as fuses, current-limiting resistors, and Zener diodes.

[0108] Reference Figure 7 In some examples, at least one partition plate is provided in the assembly cavity 130, which divides the assembly cavity 130 into at least two assembly sub-cavities, each of which is equipped with a heat element 200.

[0109] This partitioned design not only optimizes the space utilization of the assembly cavity 130 but also improves the ease of installation and maintenance of the thermal elements 200. Each assembly sub-cavity is relatively independent, effectively isolating thermal interference between different thermal elements 200 and ensuring the accuracy of temperature monitoring. Simultaneously, the partition plates provide additional support and protection for the thermal elements 200, enhancing the overall stability of the circuit breaker structure. During assembly and maintenance, workers can operate on specific assembly sub-cavities without disassembling the entire assembly cavity 130, thereby improving work efficiency.

[0110] In some examples, the partition is an integral partition that is integrally formed with the assembly housing 100. The integral partition divides the assembly cavity 130 and forms at least two assembly sub-cavities.

[0111] Alternatively, the partition plate can be a split partition plate, which is detachably connected to the assembly housing 100. After the split partition plate is installed in the assembly cavity 130, it divides the assembly cavity 130 and forms at least two assembly sub-cavities.

[0112] Alternatively, the partition can be partially designed as a single unit and partially as a separate unit.

[0113] This design flexibility ensures that the circuit breaker can adapt to different application scenarios and requirements. The integrated partition design, being integrally set with the assembly housing 100, provides higher structural strength and stability, making it suitable for applications requiring high structural strength of the circuit breaker. At the same time, the production and installation process of the integrated partition is relatively simplified, helping to improve production efficiency and reduce costs.

[0114] The modular partition design offers greater flexibility and maintainability. The modular partition is detachably connected to the housing 100, allowing for easier disassembly and reinstallation of the partition when adjustments or replacements of the thermal element 200 are needed, without disassembling the entire circuit breaker. This significantly improves the convenience and efficiency of maintenance.

[0115] Furthermore, the partially integrated and partially separate design combines the advantages of both of the above designs, ensuring structural strength and stability while providing sufficient flexibility and maintainability. This design allows for flexible selection of the type and installation method of the partition panels according to specific application needs and scenarios, thus meeting different usage requirements.

[0116] Reference Figure 7 In some examples, the partition plate is provided with a wiring channel 141 through which the connecting wire 430 of the temperature sensor 400 passes.

[0117] The design of the cable tray 141 not only helps to organize the connecting wires 430 of the temperature sensor 400, making them neat and orderly, but also effectively avoids the mess and interference of wires inside the circuit breaker. Furthermore, the cable tray 141 can also provide some protection and support for the wires, preventing them from being damaged or interfered with by external forces during circuit breaker operation. This not only improves the overall reliability and safety of the circuit breaker, but also makes the internal structure of the circuit breaker clearer and easier to maintain.

[0118] In some examples, a protective cover 330 is provided on the outer periphery of the control circuit board 300.

[0119] The protective cover 330 provides physical protection for the control circuit board 300, preventing dust, moisture, or other contaminants from the external environment from entering, thereby ensuring the normal operation of the control circuit board 300 and extending its service life. The protective cover 330 is usually made of insulating material, has good weather resistance and mechanical strength, and can effectively resist the erosion of the external environment.

[0120] Furthermore, the design of the protective cover 330 also takes heat dissipation into account. Through a reasonable ventilation structure, the heat generated by the control circuit board 300 during operation can be effectively dissipated, preventing overheating. In some embodiments, the protective cover 330 can also be tightly connected to the control circuit board 300 using clips, screws, or other fixing methods to ensure its stability and reliability.

[0121] In some examples, a snap-fit ​​structure 331 is provided inside the protective cover 330, and the control circuit board 300 snaps onto the corresponding snap-fit ​​structure 331. When the control circuit board 300 includes at least two sub-boards, different sub-boards snap onto different snap-fit ​​structures 331.

[0122] Alternatively, a fixing structure may be provided inside the protective cover 330, and the control circuit board 300 may be fixedly connected to the corresponding fixing structure. When the control circuit board 300 includes at least two sub-boards, the different sub-boards are fixedly connected to different fixing structures.

[0123] In the above structure, the interior of the protective cover 330 may be designed with snap-fit ​​structures 331, which are used to snap or fix the control circuit board 300 thereon. When the control circuit board 300 consists of at least two sub-boards, each sub-board can be snapped onto a different snap-fit ​​structure 331, thus ensuring that each sub-board is securely connected in the proper position.

[0124] Additionally, the protective cover 330 may also contain mounting structures for securely fixing the control circuit board 300 to it. Similarly, if the control circuit board 300 is composed of multiple sub-boards, each sub-board can be fixedly connected to a different mounting structure, thereby achieving stable fixation of each sub-board.

[0125] This design makes the installation and removal of the control circuit board 300 more convenient, while also improving its stability and reliability. The snap-fit ​​structure 331 or fixing structure can be customized according to the shape and size of the control circuit board 300 to ensure a tight fit and prevent loosening under vibration or impact. Furthermore, this design effectively prevents dust, moisture, and other contaminants from entering the protective cover 330, further extending the service life of the control circuit board 300.

[0126] The connection terminal 420 of the temperature sensor 400 can be connected to the slot 350 or plug reserved on the control circuit board 300.

[0127] This design not only simplifies the installation process of the temperature sensor 400 but also ensures a reliable connection between it and the control circuit board 300. The slot 350 or plug design allows the temperature sensor 400 to be quickly and accurately inserted into place, avoiding complex wiring steps and thus improving overall assembly efficiency. At the same time, this connection method also has good electrical performance, ensuring the stability and accuracy of the temperature signal during transmission. Furthermore, the reserved slot 350 or plug can be adapted to different temperature sensor 400 models, providing greater flexibility and compatibility.

[0128] An elastic limiting member is provided inside the protective cover 330. One end of the elastic limiting member is connected to the protective cover 330, and the other end of the elastic limiting member abuts against the control circuit board 300. The elastic limiting member can maintain the connection stability between the control circuit board 300 and the protective cover 330.

[0129] This flexible limiting component not only enhances the stability of the control circuit board 300 within the protective cover 330, but also absorbs and buffers external impacts or vibrations to a certain extent, further protecting the control circuit board 300 from damage. Simultaneously, the use of the flexible limiting component simplifies the installation process; operators only need to correctly place the control circuit board 300, and the flexible limiting component will automatically snap into place, requiring no additional fixing steps. Furthermore, the adjustability of the flexible limiting component allows it to adapt to control circuit boards 300 of different shapes and sizes, improving the versatility and flexibility of the design.

[0130] The protective cover 330 is located on one side of the tripping assembly 500. When the control circuit board 300 includes a data acquisition sub-board 310 and a control circuit sub-board 320, the data acquisition sub-board 310 and the control circuit sub-board 320 are spaced apart and installed simultaneously within the protective cover 330. The data acquisition sub-board 310 and the control circuit sub-board 320 can be spaced vertically, horizontally, or front-back, depending on the layout space within the circuit breaker. The protective cover 330 can be an independent cover structure or at least partially integrated with the mounting housing 100.

[0131] This spacing design not only optimizes the internal space layout of the circuit breaker but also improves the electromagnetic compatibility between various electronic components, reducing the possibility of mutual interference. Simultaneously, the independent installation of the data acquisition sub-board 310 and the control sub-board 320 facilitates subsequent maintenance and replacement, reducing repair costs. When internal space is limited, flexibly adjusting the spacing of the data acquisition sub-board 310 and the control sub-board 320 maximizes the use of limited space, ensuring that the overall performance and stability of the circuit breaker are not affected. Furthermore, the design of the protective cover 330 also considers ease of assembly and overall aesthetics, enabling it to both securely protect the internal electronic components and seamlessly integrate with the mounting housing 100, enhancing the overall quality of the circuit breaker.

[0132] Secondly, this application also provides an electrical device, including a device body and a circuit breaker as described above, wherein the circuit breaker is electrically connected to the device body.

[0133] This electrical equipment, employing the aforementioned circuit breaker, offers enhanced flexibility and accuracy. Based on collected temperature feedback data, it can precisely set appropriate temperature thresholds, effectively protecting the circuit and preventing damage or safety accidents caused by overcurrent, overload, or short circuits. Furthermore, the optimized internal spatial layout and electromagnetic compatibility design of the circuit breaker ensures greater stability and reliability during operation, reducing the likelihood of malfunctions. In addition, the circuit breaker's ease of maintenance and replacement simplifies subsequent maintenance and management, reducing maintenance costs and time. Therefore, this electrical equipment has broad application prospects in power systems.

[0134] The electrical equipment described in this application, due to the use of the aforementioned circuit breaker, offers enhanced safety and reliability. Furthermore, the circuit breaker's adaptability to different application scenarios and requirements makes the electrical equipment more flexible and versatile.

[0135] Electrical equipment can be various devices requiring circuit protection, such as household appliances, industrial equipment, and electric vehicles. By electrically connecting the circuit breaker provided in this application to the main body of the electrical equipment, the temperature in the main circuit of the equipment can be effectively monitored, and a circuit breaker operation can be performed when necessary to protect the equipment from damage caused by circuit faults or overloads. This design not only improves the safety and reliability of the electrical equipment but also reduces maintenance costs and production downtime caused by circuit faults. Furthermore, because the circuit breaker provided in this application has advantages such as compact structure, ease of installation and maintenance, it is also very suitable for use in various compact electrical devices to meet application needs in different scenarios. In specific applications, the appropriate circuit breaker model and configuration can be selected according to the actual needs and working environment of the electrical equipment to achieve the best circuit protection effect.

[0136] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0137] The above are merely preferred examples of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A circuit breaker characterized by, The circuit breaker includes: The assembly housing has an assembly cavity; A heating element is installed in the assembly cavity, and the heating element is electrically connected to the main circuit of the circuit breaker; A control circuit board is installed in the assembly cavity, and the control circuit board is electrically connected to the tripping assembly of the circuit breaker; A temperature sensor includes a detection end and a connection end, wherein the detection end is connected to the thermal element and the connection end is electrically connected to the control circuit board; A transformer, installed on the control circuit board, is capable of changing the voltage, current, or impedance in the corresponding circuit. The temperature sensor can collect the real-time temperature of the thermal element to generate a corresponding temperature signal and transmit the temperature signal to the control circuit board. The control circuit board outputs a preset multiple of the circuit breaking voltage or current to the control part of the tripping assembly based on the temperature signal to change the tripping efficiency of the tripping assembly.

2. The circuit breaker of claim 1, wherein, The control circuit board is equipped with a gear adjustment component connected to the transformer. The gear adjustment component has at least two gears, and different gears correspond to at least one different temperature threshold. Under different temperature thresholds, the adjustment method of the control circuit board is different.

3. The circuit breaker of claim 1, wherein, The circuit breaker includes at least one main circuit, each main circuit having a thermal element, each thermal element having a temperature sensor, and all temperature sensors being connected to a common control circuit board.

4. The circuit breaker of claim 1, wherein, The assembly cavity is provided with at least one partition plate, which divides the assembly cavity into at least two assembly sub-cavities, and each assembly sub-cavity is equipped with one of the heat elements.

5. The circuit breaker of claim 4, wherein, The partition plate is an integral partition plate, which is integrally formed with the assembly housing. The integral partition plate divides the assembly cavity and forms at least two assembly sub-cavities. Alternatively, the partition plate is a split partition plate, which is detachably connected to the assembly housing. After the split partition plate is installed in the assembly cavity, it divides the assembly cavity and forms at least two assembly sub-cavities. Alternatively, the partition plate may be configured as a single-piece structure or a separate structure.

6. The circuit breaker of claim 4, wherein, The partition plate is provided with a wiring channel, through which the connecting wire of the temperature sensor passes.

7. The circuit breaker of any one of claims 1 to 6, wherein, The control circuit board is configured as an integrated circuit board. The integrated circuit board is electrically connected to the temperature sensor and can collect the temperature signal from the temperature sensor. At the same time, the integrated circuit board is electrically connected to the control part of the tripping assembly. The transformer is installed on the integrated circuit board. The integrated circuit board can output a circuit breaking voltage or current of a preset multiple to the control part of the tripping assembly based on the temperature signal. Alternatively, the control circuit board can be configured as a split circuit board, including a data acquisition sub-board and a control circuit sub-board. The data acquisition sub-board and the control circuit sub-board are electrically connected. The data acquisition sub-board is electrically connected to the temperature sensor and can acquire the temperature signal from the temperature sensor. The control circuit sub-board is electrically connected to the control part of the tripping assembly. The transformer is mounted on the control circuit sub-board. The control circuit sub-board can output a preset multiple of the circuit breaking voltage or current to the control part of the tripping assembly based on the temperature signal.

8. The circuit breaker of any one of claims 1 to 6, wherein, A protective cover is provided on the outer periphery of the control circuit board.

9. The circuit breaker of claim 8, wherein, The protective cover is provided with a snap-fit ​​structure, and the control circuit board snaps onto the corresponding snap-fit ​​structure; when the control circuit board includes at least two sub-boards, different sub-boards snap onto different snap-fit ​​structures. Alternatively, a fixing structure may be provided inside the protective cover, and the control circuit board may be fixedly connected to the corresponding fixing structure; when the control circuit board includes at least two sub-boards, different sub-boards may be fixedly connected to different fixing structures.

10. An electric device, characterized by It includes a main body of equipment and a circuit breaker as described in any one of claims 1 to 9, wherein the circuit breaker is electrically connected to the main body of equipment.

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