Fusion switch and new energy system

Abstract

The application provides a kind of fusion switch and new energy system, it is related to switch technical field, fusion switch includes series connection manual opening, circuit breaker and fuse;Circuit breaker includes tripping assembly;Tripping assembly includes magnetic tripping device, adjusting support and energy storage striking mechanism;When current is greater than first preset value, magnetic tripping device can attract and drive adjusting support to strike energy storage striking mechanism, energy storage striking mechanism can amplify the striking force of adjusting support, to make circuit breaker produce action;First preset value is less than or equal to 2 times rated current value;When current is greater than second preset value, fuse can produce action.At most when current is greater than 2 times rated current value, circuit breaker can act to protect circuit, so that when current is 2 times-6 times rated current, fusion switch can protect circuit, reduce the gap of fusion switch protection interval.

Description

Technical Field

[0001] This invention relates to the field of switch technology, and in particular to an integrated switch and new energy system. Background Technology

[0002] In new energy systems, such as Figure 1 As shown, a combination of manual circuit breaker 1' and fuse 2' is widely used. Manual circuit breaker 1' is responsible for normal circuit breaking, while fuse 2' is responsible for disconnecting the circuit when it is overloaded.

[0003] However, fuse 2' will trip when the current is 6 to 8 times the rated current. When the current is 2 to 6 times the rated current, the combination of manual trip 1' and fuse 2' cannot protect the circuit. Summary of the Invention

[0004] The purpose of this invention is to provide a fusion switch to solve the technical problem in the prior art that the combination of manual tripping and fuse cannot protect the circuit when the current is 2 to 6 times the rated current.

[0005] The fusion switch provided by the present invention includes a manual tripping device, a circuit breaker, and a fuse connected in series;

[0006] The circuit breaker includes a tripping assembly; the tripping assembly includes a magnetic trip unit, an adjusting bracket, and an energy storage striking mechanism; when the current is greater than a first preset value, the magnetic trip unit can attract and drive the adjusting bracket to strike the energy storage striking mechanism, and the energy storage striking mechanism can amplify the striking force of the adjusting bracket to make the circuit breaker operate; the first preset value is less than or equal to twice the rated current value;

[0007] When the current exceeds the second preset value, the fuse can activate.

[0008] Furthermore, the magnetic trip unit includes a first base, a moving iron core, and a stationary iron core;

[0009] The stationary iron core is fixedly connected to the first base; the moving iron core is rotatably connected to the first base and forms a rotation center, and the moving iron core can rotate around the rotation center; when the current is greater than a first preset value, the moving iron core and the stationary iron core are attracted to each other, and the moving iron core can strike the adjustment bracket.

[0010] Furthermore, the first base is also provided with a conductive copper busbar, and both the moving iron core and the stationary iron core are able to sense the current in the conductive copper busbar.

[0011] Furthermore, the adjusting bracket includes a bracket, a pushing member, a first striking member, and a first elastic member;

[0012] The bracket includes a base plate and an adjustment plate arranged opposite to each other; the pusher passes through the base plate and the adjustment plate in sequence, and the magnetic trip unit can strike the pusher to drive the pusher to move relative to the base plate and the adjustment plate along the axial direction of the pusher;

[0013] The pushing member has a protrusion that can abut against the substrate, and the first elastic member abuts between the protrusion and the adjusting plate; the first striking member is fixedly connected to the pushing member and is used to strike the energy storage striking mechanism.

[0014] Furthermore, the adjustment bracket also includes a first adjustment knob, which can drive the adjustment plate to move toward or away from the base plate. The first adjustment knob is disposed inside the housing of the fusion switch.

[0015] Furthermore, the adjustment bracket also includes a second adjustment knob, which can drive the adjustment plate to move toward or away from the base plate. The second adjustment knob is disposed outside the housing of the fusion switch.

[0016] Furthermore, the energy storage striking mechanism includes a second base, a snap-lock structure, a second elastic element, and a second striking element;

[0017] One end of the second elastic member abuts against the second base, and the other end of the second elastic member abuts against the snap fastener structure; the first striking member is capable of striking the snap fastener structure;

[0018] The second striking member is slidably connected to the second base, and the second elastic member is connected to the second striking member. The second elastic member can drive the second striking member to move along the extension and retraction direction of the second elastic member.

[0019] Furthermore, the second preset value is less than or equal to 8 times the rated current value.

[0020] Furthermore, the operating time of the circuit breaker is less than 30ms, and the operating time of the fuse is less than 5ms.

[0021] Another objective of this invention is to provide a new energy system, including the fusion switch provided by this invention.

[0022] The fusion switch provided by this invention includes a manually operated trip unit, a circuit breaker, and a fuse connected in series. The circuit breaker includes a tripping assembly, which comprises a magnetic trip unit, an adjusting bracket, and an energy storage striking mechanism. When the current exceeds a first preset value, the magnetic trip unit attracts and drives the adjusting bracket to strike the energy storage striking mechanism. The energy storage striking mechanism amplifies the striking force of the adjusting bracket, causing the circuit breaker to trip. The first preset value is less than or equal to twice the rated current. When the current exceeds a second preset value, the fuse can trip. When the current is less than or equal to the first preset value, the circuit can be switched manually. When the current exceeds the first preset value, the magnetic trip unit attracts and drives the adjusting bracket to strike the energy storage striking mechanism. The striking mechanism amplifies the striking force of the adjusting bracket, causing the circuit breaker to trip. The circuit breaker trips when the current exceeds the first preset value to protect the circuit. When the current exceeds the second preset value, both the circuit breaker and the fuse trip to protect the circuit. When the current exceeds a first preset value, the circuit breaker can operate to protect the circuit. The first preset value is less than or equal to twice the rated current value. In other words, the circuit breaker can operate to protect the circuit at most when the current exceeds twice the rated current value. This ensures that the circuit breaker can protect the circuit when the current is between 2 and 6 times the rated current, reducing gaps between the protection zones of the circuit breaker. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a combination switch in the prior art;

[0025] Figure 2 This is a schematic diagram of the fusion switch provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the operation time of the fusion switch provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the fusion switch provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the tripping assembly of the fusion switch provided in an embodiment of the present invention;

[0029] Figure 6This is a schematic diagram of the magnetic trip unit of the fusion switch provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the adjustment bracket of the fusion switch provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the energy storage and impact mechanism of the fusion switch provided in an embodiment of the present invention.

[0032] Icons: 1 - Manual tripping; 2 - Circuit breaker; 21 - Magnetic trip unit; 211 - Moving iron core; 212 - Stationary iron core; 213 - Conductive copper busbar; 214 - Rotation center; 215 - First base; 22 - Adjusting bracket; 221 - Pushing component; 222 - First striking component; 223 - First adjusting knob; 224 - Second adjusting knob; 225 - Bracket; 2251 - Base plate; 2252 - Adjusting plate; 226 - First elastic component; 23 - Energy storage striking mechanism; 231 - Trip-off structure; 232 - Second elastic component; 233 - Energy storage rod; 234 - Second striking component; 235 - Second base; 3 - Fuse; 1' - Manual tripping; 2' - Fuse. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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, they should not be construed as limitations on the invention. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] This invention provides a fusion switch and a new energy system. Several embodiments are given below to describe the fusion switch and new energy system provided by this invention in detail.

[0037] Example 1

[0038] The fusion switch provided in this embodiment, such as Figures 2 to 8 As shown, the circuit includes a manually operated trip 1, a circuit breaker 2, and a fuse 3 connected in series. The circuit breaker 2 includes a tripping assembly. The tripping assembly includes a magnetic trip unit 21, an adjusting bracket 22, and an energy storage striking mechanism 23. When the current is greater than a first preset value, the magnetic trip unit 21 can attract and drive the adjusting bracket 22 to strike the energy storage striking mechanism 23. The energy storage striking mechanism 23 can amplify the striking force of the adjusting bracket 22 to make the circuit breaker 2 operate. The first preset value is less than or equal to twice the rated current value. When the current is greater than a second preset value, the fuse 3 can operate.

[0039] The first preset value can be any suitable value, such as less than or equal to 2 times the rated current value, 1.9 times the rated current value, 1.8 times the rated current value, 1.7 times the rated current value, 1.6 times the rated current value, or 1.5 times the rated current value.

[0040] When the current is less than or equal to the first preset value, the circuit can be switched on and off using manual trip 1. When the current is greater than the first preset value, the magnetic trip unit 21 can attract and drive the adjusting bracket 22 to strike the energy storage striking mechanism 23. The striking mechanism amplifies the striking force of the adjusting bracket 22, enabling the striking mechanism to trip the circuit breaker 2. The circuit breaker 2 can operate when the current is greater than the first preset value to protect the circuit. When the current is greater than the second preset value, both the circuit breaker 2 and the fuse 3 can operate to protect the circuit. This fusion switch can protect the circuit when the current is greater than the first preset value, where the first preset value is less than or equal to twice the rated current value. That is, at most, the circuit breaker 2 can protect the circuit when the current is greater than twice the rated current value, so that the fusion switch can protect the circuit when the current is 2 to 6 times the rated current, reducing the gap between the protection zones of the fusion switch.

[0041] The adjusting bracket 22 is positioned above the magnetic trip unit 21, and the energy storage and striking mechanism 23 is positioned on one side of the adjusting bracket 22, with the energy storage and striking mechanism 23 located above the magnetic trip unit 21.

[0042] Furthermore, the magnetic trip unit 21 includes a first base 215, a moving iron core 211, and a stationary iron core 212; the stationary iron core 212 is fixedly connected to the first base 215; the moving iron core 211 is rotatably connected to the first base 215 and forms a rotation center 214, and the moving iron core 211 can rotate around the rotation center 214; when the current is greater than a first preset value, the moving iron core 211 and the stationary iron core 212 are attracted together, and the moving iron core 211 can strike the adjustment bracket 22.

[0043] In order for the circuit breaker 2 to operate when the current exceeds the first preset value, the magnetic trip unit 21 must first be able to operate when the current exceeds the first preset value. In this embodiment, the thickness of the moving iron core 211 and the stationary iron core 212 is increased to increase the magnetic attraction force of the moving iron core 211 and the stationary iron core 212, so that the magnetic trip unit 21 can operate when the current exceeds the first preset value.

[0044] Furthermore, the first base 215 is also provided with a conductive copper busbar 213, and both the moving iron core 211 and the stationary iron core 212 can sense the current in the conductive copper busbar 213.

[0045] The moving iron core 211 and the stationary iron core 212 sense the current in the conductive copper busbar 213 of the main circuit, and both the moving iron core 211 and the stationary iron core 212 become electromagnets. The moving iron core 211 is located above one end of the stationary iron core 212, and the middle part of the moving iron core 211 is rotatably connected to the first base 215 to form a rotation center 214. When the current is greater than a first preset value, one end of the moving iron core 211 moves downward and attracts the stationary iron core 212, while the other end of the moving iron core 211 moves upward and contacts the pusher 221, pushing the pusher 221 to move upward.

[0046] Further, the adjusting bracket 22 includes a bracket 225, a pushing member 221, a first striking member 222, and a first elastic member 226; the bracket 225 includes a base plate 2251 and an adjusting plate 2252 disposed opposite to each other; the pushing member 221 passes through the base plate 2251 and the adjusting plate 2252 in sequence, and the magnetic trip unit 21 can strike the pushing member 221 to drive the pushing member 221 to move relative to the base plate 2251 and the adjusting plate 2252 along the axial direction of the pushing member 221; the pushing member 221 is provided with a protrusion that can abut against the base plate 2251, and the first elastic member 226 abuts between the protrusion and the adjusting plate 2252; the first striking member 222 is fixedly connected to the pushing member 221, and the first striking member 222 is used to strike the energy storage striking mechanism 23.

[0047] Specifically, when the current is greater than the first preset value, one end of the moving iron core 211 moves downward and attracts the stationary iron core 212, while the other end of the moving iron core 211 moves upward and contacts the pusher 221, pushing the pusher 221 to move upward. The protrusion moves upward with the pusher 221 and compresses the first elastic member 226. The pusher 221 drives the first striking member 222 to move upward, so that the first striking member 222 strikes the jump buckle structure 231 of the energy storage striking mechanism 23.

[0048] The adjusting bracket 22 transmits the impact force of the first striking element 222 to the jumping buckle structure 231 of the energy storage striking mechanism 23.

[0049] In this embodiment, the first elastic element 226 is a spring, the first striking element 222 is plate-shaped, and the pushing element 221 is rod-shaped.

[0050] Furthermore, the adjustment bracket 22 also includes a first adjustment knob 223, which can drive the adjustment plate 2252 to move toward or away from the base plate 2251. The first adjustment knob 223 is disposed inside the housing of the fusion switch.

[0051] By moving the adjustment plate 2252 toward or away from the base plate 2251 via the first adjustment knob 223, the compression amount of the first elastic member 226 can be adjusted, thereby adjusting the impact force output by the first striking member 222, thus adjusting the size of the first preset value, allowing the user to set the first preset value as needed.

[0052] The first adjustment knob 223 is located inside the housing of the fusion switch. Before leaving the factory, the manufacturer can adjust the first preset value through the first adjustment knob 223.

[0053] The specific structure and principle of how the first adjustment knob 223 adjusts the adjustment plate 2252 are the same as those in the prior art, and will not be described in detail here.

[0054] Furthermore, the adjustment bracket 22 also includes a second adjustment knob 224, which can drive the adjustment plate 2252 to move toward or away from the base plate 2251. The second adjustment knob 224 is disposed outside the housing of the fusion switch.

[0055] By moving the adjustment plate 2252 toward or away from the base plate 2251 via the second adjustment knob 224, the compression amount of the first elastic member 226 can be adjusted, thereby adjusting the impact force output by the first striking member 222, and thus adjusting the size of the first preset value, allowing the user to set the first preset value as needed.

[0056] The second adjustment knob 224 is located on the outside of the housing of the fusion switch. After leaving the factory, the user can adjust the first preset value through the second adjustment knob 224, which is convenient to operate.

[0057] The specific structure and principle of how the second adjustment knob 224 adjusts the adjustment plate 2252 are the same as those in the prior art, and will not be described in detail here.

[0058] Furthermore, the energy storage striking mechanism 23 includes a second base 235, a snap-lock structure 231, a second elastic element 232, and a second striking element 234; one end of the second elastic element 232 abuts against the second base 235, and the other end of the second elastic element 232 abuts against the snap-lock structure 231; the first striking element 222 can strike the snap-lock structure 231; the second striking element 234 is slidably connected to the second base 235, and the second elastic element 232 is connected to the second striking element 234, and the second elastic element 232 can drive the second striking element 234 to move along the extension and retraction direction of the second elastic element 232.

[0059] The impact force of the first striking element 222 is transmitted to the tripping structure 231 of the energy storage striking mechanism 23. Due to the energy storage capacity of the second elastic element 232, for example, the first striking element 222 outputs an impact force of 1N, which enables the second striking element 234 to output a tripping force of about 10N, causing the circuit breaker 2 to trip, thereby realizing the low current multiple instantaneous tripping of the circuit breaker 2.

[0060] When the tripping structure 231 is not tripped, the second elastic element 232 is compressed between the second base 235 and the tripping structure 231. The second elastic element 232 stores energy. When the first striking element 222 strikes the tripping structure 231, the tripping structure 231 releases and no longer blocks the second elastic element 232. The other end of the second elastic element 232 extends along its extension and contraction direction, thereby driving the second striking element 234 to move forward along the extension and contraction direction of the second elastic element 232 to strike the circuit breaker 2 to trip, causing the circuit breaker 2 to operate.

[0061] When the circuit breaker 2 trips, the energy storage rod 233 of the re-tethering mechanism can be manually operated to compress the spring. Subsequently, the tripping structure 231 resets, and the spring is compressed again between the base and the tripping structure 231, awaiting the next action. The specific structure and working principle of the re-tethering mechanism are consistent with the existing technology and will not be described in detail here.

[0062] Furthermore, the second preset value is less than or equal to 8 times the rated current value and greater than the first preset value.

[0063] The second preset value can be any suitable form greater than the first preset value, such as 8 times the rated current value, 7 times the rated current value, or 6 times the rated current value. When the current is greater than the second preset value, both circuit breaker 2 and fuse 3 can operate, but the operating times of circuit breaker 2 and fuse 3 are different.

[0064] Furthermore, the operating time of circuit breaker 2 is less than 30ms, and the operating time of fuse 3 is less than 5ms.

[0065] Manual tripping 1 can be used for protection when the current value is any value. The operating time of manual tripping 1 is greater than or equal to 200ms. When the current value is greater than the first preset value, circuit breaker 2 is used for protection. The operating time of circuit breaker 2 is less than 30ms. When the current value is greater than the second preset value, both circuit breaker 2 and fuse 3 are used for protection. The operating time of circuit breaker 2 is between 10ms and 30ms, and the operating time of fuse 3 is less than 5ms. Fuse 3 operates first. After fuse 3 opens, circuit breaker 2 completes its tripping action.

[0066] In this embodiment, the manual tripping switch 1, the circuit breaker 2, and the fuse 3 are arranged in sequence along the vertical direction, or they can be arranged in sequence along the horizontal direction.

[0067] The circuit breaker 2 has a circuit breaker housing, and the fuse 3 has a fuse housing. The circuit breaker housing and the fuse housing can be spliced ​​into a whole, and the splicing method can be snap-fit ​​or threaded connection, etc. The circuit breaker housing and the fuse housing can also be integrally formed into a whole. The circuit breaker housing and the fuse housing can also be set separately, so that the circuit breaker housing and the fuse housing are two independent components that do not interfere with each other.

[0068] Example 2

[0069] The new energy system provided in this embodiment includes the fusion switch provided in Embodiment 1. When the current is less than or equal to a first preset value, the circuit can be switched on and off using the manual trip 1. When the current is greater than the first preset value, the magnetic trip unit 21 can attract and drive the adjusting bracket 22 to strike the energy storage striking mechanism 23. The striking mechanism amplifies the striking force of the adjusting bracket 22, enabling the striking mechanism to trip the circuit breaker 2. The circuit breaker 2 can operate when the current is greater than the first preset value to protect the circuit. When the current is greater than a second preset value, both the circuit breaker 2 and the fuse 3 can operate to protect the circuit. In this fusion switch, when the current is greater than the first preset value, the circuit breaker 2 can operate to protect the circuit. The first preset value is less than or equal to twice the rated current value, meaning that the circuit breaker 2 can operate to protect the circuit at most when the current is greater than twice the rated current value. This ensures that the fusion switch can protect the circuit when the current is between 2 and 6 times the rated current, reducing the gap between the protection zones of the fusion switch.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fusion switch, characterized in that, It includes a series of manually operated tripping (1), a circuit breaker (2), and a fuse (3); The circuit breaker (2) includes a tripping assembly; the tripping assembly includes a magnetic trip unit (21), an adjusting bracket (22), and an energy storage striking mechanism (23); when the current is greater than a first preset value, the magnetic trip unit (21) can attract and drive the adjusting bracket (22) to strike the energy storage striking mechanism (23), and the energy storage striking mechanism (23) can amplify the striking force of the adjusting bracket (22) so that the circuit breaker (2) can operate; the first preset value is less than or equal to twice the rated current value; When the current is greater than the second preset value, both the circuit breaker (2) and the fuse (3) can operate; the second preset value is less than or equal to 8 times the rated current value; The adjusting bracket (22) includes a bracket (225), a pusher (221), a first striking member (222), and a first elastic member (226). The bracket (225) includes a base plate (2251) and an adjusting plate (2252) disposed opposite to each other; the pusher (221) passes through the base plate (2251) and the adjusting plate (2252) in sequence, and the magnetic trip unit (21) can strike the pusher (221) to drive the pusher (221) to move relative to the base plate (2251) and the adjusting plate (2252) along the axial direction of the pusher (221); The pusher (221) has a protrusion that can abut against the substrate (2251), and the first elastic member (226) abuts between the protrusion and the adjusting plate (2252); the first striking member (222) is fixedly connected to the pusher (221), and the first striking member (222) is used to strike the energy storage striking mechanism (23).

2. The fusion switch according to claim 1, characterized in that, The magnetic trip unit (21) includes a first base (215), a moving iron core (211), and a stationary iron core (212). The stationary iron core (212) is fixedly connected to the first base (215); the moving iron core (211) is rotatably connected to the first base (215) and forms a rotation center (214), and the moving iron core (211) can rotate around the rotation center (214); when the current is greater than the first preset value, the moving iron core (211) and the stationary iron core (212) are attracted together, and the moving iron core (211) can strike the adjusting bracket (22).

3. The fusion switch according to claim 2, characterized in that, The first base (215) is also provided with a conductive copper busbar (213), and both the moving iron core (211) and the stationary iron core (212) can sense the current in the conductive copper busbar (213).

4. The fusion switch according to claim 1, characterized in that, The adjustment bracket (22) also includes a first adjustment knob (223), which can drive the adjustment plate (2252) to move toward or away from the base plate (2251). The first adjustment knob (223) is disposed inside the housing of the fusion switch.

5. The fusion switch according to claim 1, characterized in that, The adjustment bracket (22) also includes a second adjustment knob (224), which can drive the adjustment plate (2252) to move toward or away from the base plate (2251). The second adjustment knob (224) is disposed outside the housing of the fusion switch.

6. The fusion switch according to claim 1, characterized in that, The energy storage strike mechanism (23) includes a second base (235), a snap-lock structure (231), a second elastic element (232), and a second strike element (234). One end of the second elastic member (232) abuts against the second base (235), and the other end of the second elastic member (232) abuts against the jump buckle structure (231); the first striking member (222) is capable of striking the jump buckle structure (231). The second striking member (234) is slidably connected to the second base (235), and the second elastic member (232) is connected to the second striking member (234). The second elastic member (232) can drive the second striking member (234) to move along the extension and retraction direction of the second elastic member (232).

7. The fusion switch according to claim 1, characterized in that, The operating time of the circuit breaker (2) is less than 30ms, and the operating time of the fuse (3) is less than 5ms.

8. A new energy system, characterized in that, Includes the fusion switch according to any one of claims 1-7.

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