A high capacity electrical connection and circuit breaker

Abstract

The application provides a large-capacity electric connection and breaker, which comprises a breaker body, an electric connection group, an insulating seat and a fastening group. A body conductive cutter is fixed on the breaker body. The electric connection group is fixed on the insulating seat through the fastening group, and an electric connection port is arranged on the electric connection group. The body conductive cutter is electrically connected with the electric connection port. The electric connection group comprises a conductive sheet, a supporting plate, a conductive piece, a wiring row and a guide plate. The conductive piece is arranged between the conductive sheets, and is fixed with the wiring row, so that each pole of each phase of the breaker is electrically connected in parallel in the electric connection group, and is output from the wiring row, thereby inhibiting the unbalance of the current of each pole, reducing the heat generation and lowering the operation temperature rise, and making the operation of the breaker safer and more reliable.

Description

Technical Field

[0001] This invention relates to low-voltage circuit breakers, and more particularly to the electrical connections of high-capacity circuit breakers. Background Technology

[0002] In low-voltage power distribution equipment, drawer assemblies are often used to enable rapid deployment and connection of circuit breakers and other components to power lines, or to facilitate rapid disconnection and isolation during maintenance. For rapid deployment of the circuit breaker, the sliding plates on both sides of the drawer assembly are first pulled out, the circuit breaker is placed between the two plates, and then the drawer assembly is pushed in. The mechanical transmission structure of the drawer assembly then moves the two sliding plates, thereby electrically connecting the circuit breaker to the power line. For circuit breakers with smaller current capacities, the conductive cross-sectional area of ​​the internal conductive circuit is also smaller due to the lower rated current. Therefore, a single conductive blade is typically used for the electrical connection between the circuit breaker body and the drawer assembly; that is, a conductive blade is fixed at the input or output end of each phase of the circuit breaker body for connection with the drawer assembly. For circuit breakers with larger current capacities, the conductive cross-sectional area of ​​the internal conductive circuit is also larger due to the higher rated current. Therefore, the cross-sectional area of ​​the conductive blade used for the electrical connection between the circuit breaker body and the drawer assembly is also increased, and the product often adopts a multi-pole parallel connection per phase technical solution. At this point, each pole of the circuit breaker body is fixed with a conductive blade, meaning each phase is equipped with a corresponding number of conductive blades based on the number of poles, which are connected to the corresponding electrical connection ports of the drawer device. In practical applications, due to differences in the manufacturing process, the resistance of each pole's parallel circuit in each phase may vary. During the circuit breaker's operation, this variation in circuit resistance can lead to an imbalance in the current flowing through each pole, causing some poles to bear excessive current, resulting in excessive heat generation and a risk of overheating and burnout. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an electrical connection and circuit breaker suitable for high current capacity circuit breakers, so as to solve the problem of excessive heat generation and safety hazards caused by the uneven current of each phase and pole of a high current capacity circuit breaker.

[0004] To achieve the above objectives, this invention designs a high-capacity electrical connection and drawer base, including a circuit breaker body, an electrical connection assembly, an insulating base, and a fastening assembly. A conductive blade is fixed to the circuit breaker body. The electrical connection assembly is fixed to the insulating base via the fastening assembly, and an electrical connection port is provided on the electrical connection assembly. The conductive blade is electrically connected to the electrical connection port. Specifically, the electrical connection assembly includes a conductive sheet, a support plate, a conductive element, a terminal block, and a guide plate. The electrical connection assembly has at least two electrical connection ports. Each electrical connection port corresponds to a set of conductive sheets. A conductive element is provided between adjacent sets of conductive sheets. The conductive sheets are fixed to the terminal block. Each set of conductive sheets and the terminal block are electrically connected to each other through close contact with the conductive element.

[0005] Furthermore, the conductive sheet has an electrical connecting finger facing the conductive blade of the main body, and the electrical connecting finger has a limiting hole. The other end of the conductive sheet has a conductive segment, and the conductive segment has a guide hole.

[0006] Furthermore, the conductive member has a second guide section facing the conductive blade of the main body, and a second guide hole is provided on the second guide section, which is coupled to and opposite to the limiting hole. The other end of the conductive member has a second fastening section, and a second fastening hole is provided on the second fastening section, which is coupled to and opposite to the guide plate hole.

[0007] Furthermore, the terminal block has an electrical connection segment facing the conductive sheet, and the electrical connection segment has an electrical connection hole coupled to the hole in the conductive sheet. The other end of the terminal block has a connection segment with a connection hole.

[0008] Furthermore, the support plate has a first guide section facing the conductive blade of the main body, and a first guide hole is provided on the first guide section, which is coupled to and opposite to the limiting hole. The other end of the support plate has a first fastening section, and a first fastening hole is provided on the first fastening section, which is coupled to and opposite to the guide plate hole. The first fastening section on the support plate is bent towards the insulating seat to form a mounting section.

[0009] The technical effect of this invention is that by setting a conductive element between the conductive sheets and fixing it to the terminal block, each pole of each phase of the circuit breaker is electrically connected and current is output from the terminal block, thereby suppressing the current imbalance between poles, reducing heat generation, and lowering the operating temperature rise, making the circuit breaker safer and more reliable in operation. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of a high-capacity electrical connection and circuit breaker involved in this invention.

[0011] Figure 2 This is a cross-sectional view of an electrical connection assembly for a high-capacity electrical connection and circuit breaker involved in this invention.

[0012] Figure 3 This is a schematic diagram showing the disassembled structure of the electrical connection group of a large-capacity electrical connection and circuit breaker involved in this invention.

[0013] Figure 4 This is a schematic diagram of the structure of the conducting element of a high-capacity electrical connection and circuit breaker involved in this invention.

[0014] Figure 5 This is a schematic diagram of the structure of a support plate for a high-capacity electrical connection and circuit breaker involved in this invention.

[0015] Figure 6This is a schematic diagram of the structure of a heat dissipation support plate for a large-capacity electrical connection and circuit breaker involved in this invention.

[0016] Figure 7 This is a schematic diagram of the structure of a high-capacity electrical connection and circuit breaker terminal block with a heat sink, as described in this invention. Detailed Implementation

[0017] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0018] Marker explanation:

[0019] Circuit breaker body 1, body conductive blade 101,

[0020] Electrical connection group 2, electrical connection port 201,

[0021] Conductive sheet 202, electrical connector 2021, conductive segment 2022, limiting hole 2023, guide hole 2024.

[0022] Support plate 203, first guide section 2031, transition section 2032, first fastening section 2033, mounting section 2034, first guide hole 2035, first fastening hole 2036, first mounting hole 2037a, first nut groove 2037b, pressure edge 20371b, stop protrusion 20372b, first ventilation hole 2038.

[0023] Guide plate 204, support plate guide end 2041, through component guide end 2042, limiting section 2043.

[0024] Fastening screw 205, first mounting nut 206, second mounting nut 207.

[0025] Conductor 208, second mounting hole 2081, second guide hole 2082, second fastening hole 2083, second ventilation hole 2084, second nut groove 2085, mounting surface 2086, second fastening section 2087, second guide section 2088.

[0026] Fastener 209,

[0027] Terminal block 210, electrical connection section 2101, wiring section 2102, electrical connection hole 2103, wiring hole 2104, heat dissipation connection section 2015.

[0028] Heat dissipation support plate 211, heat plate guide section 2111, heat dissipation section 2112, heat plate fastening surface 2113, heat plate mounting surface 2114, heat plate guide hole 2115, heat plate fastening hole 2116, heat plate mounting hole 2117a, heat plate nut groove 2117b, heat dissipation fin 2118.

[0029] Insulating base 3, electrical connection mounting hole 301, cable tray window 302,

[0030] Fastening assembly 4, elastic element 5, radiator 6,

[0031] Insulating cover 7, cover window 701, lower heat dissipation slot 702, upper heat dissipation slot 703, side heat dissipation slot 704.

[0032] Figure 1 As shown, a high-capacity electrical connection and circuit breaker of the present invention includes a circuit breaker body 1, an electrical connection assembly 2, an insulating base 3, and a fastening assembly 4. A conductive blade 101 is fixed to the circuit breaker body 1. The electrical connection assembly 2 is fixed to the insulating base 3 via the fastening assembly 4, and an electrical connection port 201 is provided on the electrical connection assembly 2. The conductive blade 101 is electrically connected to the electrical connection port 201. Figure 1 The circuit breaker shown in this example is a three-phase circuit breaker with three-phase conductive circuits. Each conductive circuit has an input terminal and an output terminal, which are arranged vertically for connection to the power distribution network. For this purpose, conductive blades 101 are fixed to the circuit breaker body 1, with one set on each phase conductive circuit (top and bottom); terminal blocks 210 are fixed to the drawer assembly, with one set on each phase conductive circuit (top and bottom). To meet the requirements of a high-current capacity circuit breaker, this embodiment adopts a two-pole parallel connection per phase technical solution. Therefore, one conductive blade 101 is fixed to each pole of the circuit breaker body 1, that is, each phase is equipped with two conductive blades 101, which are respectively connected to the two electrical connection ports 201 of the drawer assembly.

[0033] Figure 1 The insulating base 3 shown is provided with a cable tray window 302 at each inlet or outlet end on the side away from the circuit breaker body 1. Electrical connection mounting holes 301 are provided around the cable tray window 302. The fastening assembly 4 secures the electrical connection assembly 2 to the insulating base 3 through the electrical connection mounting holes 301.

[0034] Figure 2As shown, the electrical connection assembly 2 of this embodiment includes conductive sheets 202, support plates 203, guide plates 204, conductive elements 208, terminal blocks 210, and elastic elements 5. The electrical connection assembly 2 of this embodiment has two electrical connection ports 201 that match the conductive blade 101 on the circuit breaker body 1. Each electrical connection port 201 is equipped with two parallel, opposing conductive sheets 202, with the guide plate 204 passing through the middle of each pair of parallel, opposing conductive sheets 202. The guide plate 204 separates the two parallel, opposing conductive sheets 202 by a short distance, ensuring that the distance between the two parallel, opposing conductive sheets 202 is always slightly smaller than the thickness of the conductive blade 101, thereby forming an electrical connection port 201 between the two parallel, opposing conductive sheets 202.

[0035] Figure 3 As shown, the conductive sheet 202 has electrical connecting fingers 2021 facing the conductive blade 101. A conductive segment 2022 is provided at the other end of the conductive sheet 2022, and a guide hole 2024 is provided on the conductive segment 2022. The guide hole 2024 is used for secure electrical connection with the terminal block 210. The number of electrical connecting fingers 2021 provided on the conductive sheet 202 is determined according to the rated current of the circuit breaker; generally, the larger the rated current of the circuit breaker, the more electrical connecting fingers 2021 are provided. In this embodiment, six electrical connecting fingers 2021 are provided. These multiple electrical connecting fingers 2021 are independent of each other, but all are connected to the conductive segment 2022. A limiting hole 2023 is provided on each electrical connecting finger 2021.

[0036] Figure 3 As shown, the terminal block 210 has an electrical connection segment 2101 facing the conductive sheet 202. The electrical connection segment 2101 has an electrical connection hole 2103, which is coupled to and opposite the conductive sheet hole 2024. The electrical connection hole 2103 is used to securely connect with the conductive sheet 202. The other end of the terminal block 210 has a terminal segment 2102, which has a terminal hole 2104 for connection to a power distribution line. The terminal block 210 can pass through the wire strip window 302 on the insulating base 3.

[0037] Figure 3As shown, a limiting section 2043 is provided in the middle of the guide plate 204. A support plate guide end 2041 is provided on the guide plate 204 facing the support plate 203, and a guide end 2042 is provided on the guide member 208 facing the guide member. The cross-section of the limiting section 2043 is larger than the size of the limiting hole 2023, and the length of the limiting section 2043 is slightly less than the thickness of the conductive knife 101. Both the support plate guide end 2041 and the guide end 2042 can pass through the limiting hole 2023. In one electrical connection port 201, the guide end 2041 of the support plate passes through the limiting hole 2023 corresponding to one of the conductive pieces 202, and the guide end 2042 of the through piece passes through the limiting hole 2023 corresponding to the other conductive piece 202. The elastic member 5 causes the two parallel and opposite conductive pieces 202 to move closer to the middle and be positioned by the limiting segment 2043, so that an electrical connection port 201 with a spacing slightly smaller than the thickness of the main body conductive blade 101 is formed between the two parallel and opposite conductive pieces 202.

[0038] like Figure 4 As shown, the conductive member 208 has a second guide section 2088 facing the conductive blade 101. The second guide section 2088 has a second guide hole 2082, which is coupled to and opposite to a limiting hole 2023 on the conductive sheet 202. The guide end 2042 of the conductive member can pass through the second guide hole 2082. The other end of the conductive member 208 has a second fastening section 2087, which has a second fastening hole 2083, coupled to and opposite to a guide plate hole 2024. The second fastening hole 2083 is used for fastening and connecting the conductive member 208 and the conductive sheet 202. The conductive element 208 has a mounting surface 2086 facing the terminal block 210. A second mounting hole 2081 is provided on the mounting surface 2086. The second mounting hole 2081 is coupled to and opposite the electrical connection mounting hole 301 on the insulating base 3. The second mounting hole 2081 is used for mounting and securing the electrical connection assembly 2 on the insulating base 3. The second mounting hole 2081 can be a threaded hole or a smooth hole. When the second mounting hole 2081 is a threaded hole, the fastening assembly 4 can be directly fastened to the second mounting hole 2081 to secure the electrical connection assembly 2 on the insulating base 3. When the second mounting hole 2081 is a smooth hole, the fastening assembly 4 can, on the one hand, be directly fastened to the second mounting hole 2081 using a self-tapping screw; on the other hand, if… Figure 4 As shown, a second nut groove 2085 is provided on the second fastening section 2087, and the second nut groove 2085 corresponds to and communicates with the second mounting hole 2081. During installation, Figure 4The second mounting nut 207 is placed in the second nut groove 2085. The fastening assembly 4 passes through the second mounting hole 2081 and is fastened to the second mounting nut 207 in the second nut groove 2085, thereby securing the electrical connection assembly 2 on the insulating base 3. The second guide section 2088 and the second fastening section 2087 of the conductive member 208 are provided with several second ventilation holes 2084 to aid in ventilation and heat dissipation during the operation of the electrical connection assembly 2.

[0039] like Figure 5 As shown, the support plate 203 has a first guide section 2031 facing the conductive blade 101. The first guide section 2031 has a first guide hole 2035, which is coupled to and opposite to the limiting hole 2023. The support plate guide end 2041 on the guide plate 204 can pass through the first guide hole 2035. The other end of the support plate 203 has a first fastening section 2033, which has a first fastening hole 2036, coupled to and opposite to the guide plate hole 2024, for fastening the support plate 203 to the conductive plate 202. The first fastening section 2033 on the support plate 203 is bent towards the insulating seat 3 to form an installation section 2034, for fastening the electrical connection assembly 2 to the insulating seat 3. This embodiment provides a fastening scheme between the installation section 2034 and the insulating seat 3 as follows: Figure 5 As shown, a first mounting hole 2037a is provided on the mounting section 2034 for fastening with the fastening assembly 4. Another fastening scheme between the mounting section 2034 and the insulating base 3 provided in this embodiment is as follows: Figure 5 As shown, a first nut groove 2037b is provided at the junction of the mounting section 2034 and the first fastening section 2033. A pressure edge 20371b is provided on the first fastening section 2033 from the first nut groove 2037b. A stop protrusion 20372b is provided on the mounting section 2034 from the first nut groove 2037b. Figure 5 As shown, the first mounting nut 206 is inserted into the first nut groove 2037b, and is positioned by the pressure edge 20371b, the stop protrusion 20372b, and the mounting section 2034. When the electrical connection assembly 2 is installed and tightened on the insulating base 3, the fastening assembly 4 is tightened to the first mounting nut 206. The first guide section 2031 of the support plate 203 transitions naturally to the first fastening section 2033 through the transition section 2032. The transition section 2032 is provided with several first ventilation holes 2038 for ventilation and heat dissipation during the operation of the electrical connection assembly 2.

[0040] like Figure 2As shown, during the assembly of the electrical connection group 2, the support plate guide end 2041 and the through-piece guide end 2042 of the guide plate 204 pass through the limiting hole 2023 into the parallel and oppositely arranged electrical connection fingers 2021, and are tightly attached to the limiting section 2043 under the action of the elastic member 5, forming an electrical connection port 201. Two symmetrical electrical connection ports 201 are provided on the left and right sides. Among them, the support plate guide end 2041 of the guide plate 204 in the two electrical connection ports 201 respectively passes through the first guide hole 2035 of the corresponding support plate 203. The through-piece guide end 2042 of the guide plate 204 in the two electrical connection ports 201 passes through the second guide hole 2082 of the centrally located through-piece 208 from the left and right sides. The fastening pin 205 passes sequentially through the first fastening hole 2036 on the support plate 203 on one side of the electrical connection assembly 2, the guide hole 2024 on the conductive sheet 202, the electrical connection hole 2103 on the terminal block 210, the guide hole 2024 on the conductive sheet 202, the second fastening hole 2083 of the centrally located conductive element 208, and the guide hole 2024 on the conductive sheet 202, the electrical connection hole 2103 on the terminal block 210, the guide hole 2024 on the conductive sheet 202, and the first fastening hole 2036 on the support plate 203 on the other side of the electrical connection assembly 2, and is fastened to the fastening nut 209, thereby realizing the connection between the left and right electrical ports 201 and the terminal block 210 via the centrally located conductive element 208. The electrical connection assembly 2 is placed inside the insulating base 3, and the terminal block 210 of the electrical connection assembly 2 passes through the wire window 302 on the insulating base 3, with the wiring segment 2102 on the terminal block 210 located outside the insulating base 3. The fastening assembly 4 passes through the electrical connection mounting hole 301 and is fastened to the first mounting hole 2037a and the second mounting hole 2081 in the electrical connection assembly 2, or to the first mounting nut 206 and the second mounting nut 207 in the electrical connection assembly 2, or to the first mounting hole 2037a and the hot plate mounting hole 2117a in the electrical connection assembly 2, thereby realizing the installation and fixation of the electrical connection assembly 2 on the insulating base 3. In use, the two main body conductive blades 101 fixed at the input or output end of each phase on the circuit breaker body 1 overcome the elastic force provided by the elastic element 5 and enter the corresponding electrical connection port 201, closely contacting the conductive piece 202 for electrical connection, and connecting to the power distribution network via the terminal block 210 of the electrical connection assembly 2. When the circuit breaker conductive circuit carries current, such as... Figure 2 As shown, the current from each pole flows into the electrical connection group 2 via its respective conductive blade 101. Within the electrical connection group 2, the current passes through the conductive piece 202, converges at the conductive element 208, and then uniformly enters the terminal block 210 before entering the power distribution network. When the currents on the two poles of the circuit breaker are unbalanced, the currents entering the electrical connection group 2 converge at the conductive element 208, and the converged current flows into the power distribution network through the terminal block 210, effectively suppressing the problem of unbalanced currents flowing into the power distribution network. When the circuit breaker is energized, as... Figure 7As shown, the cooler air enters the electrical connection group 2 through the first ventilation hole 2038 on the support plate 203, and then leaves the electrical connection group 2 from above, carrying away the heat generated during the operation of the circuit breaker and playing a role in ventilation and heat dissipation, so that the circuit breaker of the present invention operates at a lower temperature.

[0041] like Figure 6 As shown, another support plate embodiment of the electrical connection group 2 of the present invention is provided. Since current flows in the electrical connection group 2, a certain amount of Joule heat is generated, so a heat dissipation support plate 211 with heat dissipation function is provided. The heat dissipation support plate 211 has a hot plate guide section 2111 facing the conductive blade 101 of the main body. The hot plate guide section 2111 has a hot plate guide hole 2115, which is coupled to and opposite to the limiting hole 2023. The support plate guide end 2041 on the guide plate 204 can pass through the hot plate guide hole 2115. The other end of the heat dissipation support plate 211 has a hot plate fastening surface 2113, which has a hot plate fastening hole 2116, which is coupled to and opposite to the guide plate hole 2024, for fastening the heat dissipation support plate 211 to the conductive plate 202. The heat dissipation support plate 211 has a heat plate fastening surface 2113 facing the insulating base 3, and a heat plate mounting surface 2114 is provided for the installation and fastening of the electrical connection assembly 2 on the insulating base 3. This embodiment provides a fastening scheme between the heat plate mounting surface 2114 and the insulating base 3 as follows: Figure 6 As shown, a hot plate mounting hole 2117a is provided on the hot plate mounting surface 2114 for fastening with the fastening assembly 4. The fastening scheme between the hot plate mounting surface 2114 and the insulating base 3 provided in this embodiment is as follows: Figure 6 As shown, a hot plate nut groove 2117b is provided on the hot plate fastening surface 2113, and the hot plate nut groove 2117b communicates with the mounting hole 2117a. Figure 6 As shown, the first mounting nut 206 is inserted into the hot plate nut groove 2117b. When the electrical connection assembly 2 is installed and tightened on the insulating base 3, the fastening assembly 4 is tightened to the first mounting nut 206. A heat dissipation section 2112 is provided between the hot plate guide section 2111 and the hot plate fastening surface 2113, and a heat dissipation fin 2118 is provided in the heat dissipation section 2112. When the electrical connection assembly 2 generates heat during operation, its heat can reach the heat dissipation section 2112 through the hot plate guide section 2111 or the hot plate mounting surface 2114, and dissipate into the naturally flowing air through the heat dissipation fin 2118. Figure 7As shown, to demonstrate the ventilation and heat dissipation principle of the support plate 3 and the heat dissipation support plate 211 during circuit breaker operation, a heat dissipation diagram using the support plate 3 is drawn for the electrical connection group 2 located above the circuit breaker, and a heat dissipation diagram using the heat dissipation support plate 211 is drawn for the electrical connection group 2 located below the circuit breaker. When the circuit breaker is energized, the cooler air enters the electrical connection group 2 through the heat dissipation fins 2118 of the heat dissipation section 2112 on the heat dissipation support plate 211, and then exits the electrical connection group 2 from above, carrying away some of the heat generated during circuit breaker operation, thus achieving ventilation and heat dissipation and lowering the operating temperature of the circuit breaker of this invention.

[0042] like Figure 7 As shown, this invention discloses a structural scheme for installing a heat sink 6 at a terminal block 210 in a high-capacity electrical connection and circuit breaker. A heat dissipation connection section 2015 with a natural transition is provided between the electrical connection section 2101 and the terminal section 2102 of the terminal block 210, and the heat sink 6 is fixed on the heat dissipation connection section 2015. An insulating cover 7 is installed on the outside of the heat sink 6. A lower heat dissipation groove 702 is provided at the lower part of the insulating cover 7, and the lower heat dissipation groove 702 has several through holes for natural air convection. An upper heat dissipation groove 703 is provided at the upper part of the insulating cover 7, and the upper heat dissipation groove 703 has several through holes for natural air convection. A side heat dissipation groove 704 is provided on the side of the insulating cover 7, and the side heat dissipation groove 704 has several through holes for natural air convection. The lower heat dissipation groove 702, the upper heat dissipation groove 703, and the side heat dissipation groove 704 naturally surround to form a hollow housing window 701. The terminal block 210 can pass through the housing window 701. The insulating cover 7 passes through the terminal block 210 and is placed on the heat sink 6 on the heat dissipation connection section 2015, covering the heat sink 6. When the circuit breaker is energized, as... Figure 7 As shown, the cooler air located below and to the side of the circuit breaker enters the radiator 6 through the lower heat dissipation groove 702 and the side heat dissipation groove 704 on the insulating cover 7 and is heated. Then it leaves the radiator 6 through the upper heat dissipation groove 703. Some of the heated air also leaves the radiator 6 through the side heat dissipation groove 704, thereby helping the circuit breaker to dissipate heat to the outside and making the circuit breaker of the present invention operate at a lower temperature.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-capacity electrical connection and circuit breaker, comprising a circuit breaker body (1), an electrical connection group (2), an insulating base (3), and a fastening group (4); a body conductive blade (101) is fixed on the circuit breaker body (1); the electrical connection group (2) is fixed to the insulating base (3) by the fastening group (4), and an electrical connection port (201) is provided on the electrical connection group (2); the body conductive blade (101) is electrically connected to the electrical connection port (201); Its features are, The electrical connection assembly (2) includes a conductive sheet (202), a support plate (203), a conductive element (208), a terminal block (210), and a guide plate (204); The electrical connection group (2) is provided with at least two electrical connection ports (201); Each electrical connection port (201) corresponds to a set of conductive sheets (202); A conductive element (208) is provided between the conductive sheets (202) of the adjacent groups; The conductive sheet (202) is fixed to the terminal block (210); The conductive sheets (202) and the terminal blocks (210) are electrically connected to each other by being in close contact with the conductive elements (208).

2. The high-capacity electrical connection and circuit breaker according to claim 1, characterized in that, The conductive sheet (202) is provided with an electrical connecting finger (2021) facing the main conductive blade (101), and a limiting hole (2023) is provided on the electrical connecting finger (2021); A conductive segment (2022) is provided at the other end of the conductive sheet (202), and a guide hole (2024) is provided on the conductive segment (2022).

3. The high-capacity electrical connection and circuit breaker according to claim 1, characterized in that, The conductive member (208) is provided with a second guide section (2088) facing the main conductive knife (101), and a second guide hole (2082) is provided on the second guide section (2088), and the second guide hole (2082) is coupled to the limiting hole (2023); The other end of the conductive member (208) is provided with a second fastening section (2087), and a second fastening hole (2083) is provided on the second fastening section (2087). The second fastening hole (2083) is coupled to the guide plate hole (2024).

4. A high-capacity electrical connection and circuit breaker according to claim 1, characterized in that, The terminal block (210) is provided with an electrical connection segment (2101) facing the conductive sheet (202), and an electrical connection hole (2103) is provided on the electrical connection segment (2101), and the electrical connection hole (2103) is coupled to the hole (2024) of the conductive sheet; The other end of the terminal block (210) is provided with a terminal section (2102), and a terminal hole (2104) is provided on the terminal section (2102).

5. A high-capacity electrical connection and circuit breaker according to claim 1, characterized in that, The support plate (203) is provided with a first guide section (2031) facing the main conductive knife (101), and a first guide hole (2035) is provided on the first guide section (2031), and the first guide hole (2035) is coupled to the limiting hole (2023); The other end of the support plate (203) is provided with a first fastening section (2033), and a first fastening hole (2036) is provided on the first fastening section (2033), and the first fastening hole (2036) is coupled to the guide plate hole (2024); The first fastening section (2033) on the support plate (203) is bent toward the insulating seat (3) to form the mounting section (2034).

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