Fusion switch and new energy system

Abstract

The invention provides a fusion switch and a new energy system, and relates to the technical field of switches, and the fusion switch comprises a manual opening, a circuit breaker and a fuse which are connected in series. The circuit breaker comprises a tripping assembly. The tripping assembly comprises a magnetic tripper, an adjusting bracket and an energy storage striking mechanism; when the current is larger than a first preset value, the magnetic release can attract and drive the adjusting support to strike the energy storage strike mechanism, and the energy storage strike mechanism can amplify the strike force of the adjusting support so that the circuit breaker can act. The first preset value is smaller than or equal to twice of the rated current value; and when the current is greater than a second preset value, the fuse can act. And when the current is at most greater than two times of the rated current value, the circuit breaker can act to protect the circuit, so that when the current is 2-6 times of the rated current value, the fusion switch can protect the circuit, and the neutral position of the protection interval of the fusion switch is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch, in particular to a fusion switch and a new energy system. BACKGROUND

[0002] In the new energy system, as shown in the figure, a combination of a manual switch 1' and a fuse 2' is widely used. Figure 1 The manual switch 1' is responsible for normal circuit breaking, and the fuse 2' is responsible for breaking when the circuit is overloaded.

[0003] However, the fuse 2' will act when the current is 6-8 times the rated current, and the combination of the manual switch 1' and the fuse 2' cannot protect the circuit when the current is 2-6 times the rated current. SUMMARY

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

[0005] The fusion switch provided by the present application comprises a manual switch, a circuit breaker and a fuse in series;

[0006] The circuit breaker comprises a trip assembly; the trip assembly comprises a magnetic trip, an adjusting bracket and an energy storage striking mechanism; when the current is greater than a first preset value, the magnetic trip 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 act; the first preset value is less than or equal to 2 times the rated current value;

[0007] When the current is greater than a second preset value, the fuse can act.

[0008] Further, the magnetic trip comprises a first base, a moving iron core and a static iron core;

[0009] The static iron core is fixedly connected with the first base, and the moving iron core is rotatably connected with 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 the first preset value, the moving iron core is attracted to the static iron core, and the moving iron core can strike the adjusting bracket.

[0010] Further, the first base is further provided with a conductive copper bar, and the moving iron core and the static iron core can both sense the current in the conductive copper bar.

[0011] Further, the adjusting bracket comprises a bracket, a pushing piece, a first striking piece and a first elastic piece;

[0012] The support comprises oppositely arranged base plate and adjusting plate; the pusher passes through the base plate and the adjusting plate in sequence, and the magnetic tripper can strike the pusher to drive the pusher to move along the axial direction of the pusher relative to the base plate and the adjusting plate.

[0013] The pusher is provided with a protrusion capable of abutting against the base plate, and the first elastic member abuts between the protrusion and the adjusting plate; the first striking piece is fixedly connected with the pusher, and the first striking piece is used for striking the energy storage striking mechanism.

[0014] Further, the adjusting support further comprises a first adjusting knob capable of driving the adjusting plate to move towards or away from the base plate, and the first adjusting knob is arranged inside the housing of the fusion switch.

[0015] Further, the adjusting support further comprises a second adjusting knob capable of driving the adjusting plate to move towards or away from the base plate, and the second adjusting knob is arranged outside the housing of the fusion switch.

[0016] Further, the energy storage striking mechanism comprises a second base, a jump buckle structure, a second elastic member and a second striking piece.

[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 jump buckle structure; the first striking piece can strike the jump buckle structure.

[0018] The second striking piece is in sliding connection with the second base, and the second elastic member is connected with the second striking piece; the second elastic member can drive the second striking piece to move along the extension and retraction direction of the second elastic member.

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

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

[0021] The purpose of the present application is also to provide a new energy system comprising the fusion switch provided by the present application.

[0022] The application provides a fusion switch, which comprises a series connection of a manual opening switch, a circuit breaker and a fuse; the circuit breaker comprises a tripping assembly; the tripping assembly comprises a magnetic tripping device, an adjusting support and an energy storage striking mechanism; when the current is greater than a first preset value, the magnetic tripping device can be attracted and drive the adjusting support to strike the energy storage striking mechanism, and the energy storage striking mechanism can amplify the striking force of the adjusting support, so that the circuit breaker is actuated; the first preset value is less than or equal to 2 times the rated current value; when the current is greater than a second preset value, the fuse can be actuated. When the current is less than or equal to the first preset value, the manual opening switch can be used to turn on and off the circuit; when the current is greater than the first preset value, the magnetic tripping device can be attracted and drive the adjusting support to strike the energy storage striking mechanism, the striking mechanism amplifies the striking force of the adjusting support, so that the striking mechanism can strike the circuit breaker to be tripped, and the circuit breaker can be actuated when the current is greater than the first preset value, so as to protect the circuit; when the current is greater than the second preset value, the circuit breaker and the fuse can be actuated, so as to protect the circuit. When the current is greater than the first preset value, the circuit breaker can be actuated to protect the circuit, and the first preset value is less than or equal to 2 times the rated current value, that is, the circuit breaker can be actuated to protect the circuit when the current is greater than 2 times the rated current value, so that the fusion switch can protect the circuit when the current is 2 times to 6 times the rated current value, and the gap of the protection range of the fusion switch is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

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

[0025] Figure 2 It is a principle diagram of the fusion switch provided by the embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the action time of the fusion switch provided by the embodiment of the present application;

[0027] Figure 4 It is a structural schematic diagram of the fusion switch provided by the embodiment of the present application;

[0028] Figure 5 It is a structural schematic diagram of the tripping assembly of the fusion switch provided by the embodiment of the present application;

[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 the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The present application provides a kind of fusion switch and new energy system, the following multiple embodiments are described in detail to the fusion switch and new energy system provided by the present application.

[0037] Embodiment 1

[0038] The fusion switch provided in the embodiment, as shown in Figures 2 to 8 It includes series manual switch 1, circuit breaker 2 and fuse 3;Circuit breaker 2 includes trip assembly;The trip assembly includes magnetic trip 21, adjusting bracket 22 and energy storage striking mechanism 23;When the current is greater than the first preset value, the magnetic trip 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 to make the circuit breaker 2 act;The first preset value is less than or equal to 2 times the rated current value;When the current is greater than the second preset value, the fuse 3 can act.

[0039] Among them, the first preset value can be 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, etc. Any suitable value.

[0040] When the current is less than or equal to the first preset value, the manual switch 1 can be used to turn on and off the circuit, when the current is greater than the first preset value, the magnetic trip 21 can attract and drive the adjusting bracket 22 to strike the energy storage striking mechanism 23, and the striking mechanism can amplify the striking force of the adjusting bracket 22, so that the striking mechanism can strike the circuit breaker 2 to trip, and the circuit breaker 2 can act when the current is greater than the first preset value to protect the circuit, and when the current is greater than the second preset value, the circuit breaker 2 and the fuse 3 can act to protect the circuit. When the current is greater than the first preset value, the circuit breaker 2 of the fusion switch can act to protect the circuit, wherein the first preset value is less than or equal to 2 times the rated current value, that is, at most when the current is greater than 2 times the rated current value, the circuit breaker 2 can act to protect the circuit, so that when the current is 2 times to 6 times the rated current, the fusion switch can protect the circuit, and the gap of the fusion switch protection interval is reduced.

[0041] The adjusting support 22 is arranged above the magnetic tripping device 21, and the energy storage striking mechanism 23 is arranged on one side of the adjusting support 22 and is located on the upper side of the magnetic tripping device 21.

[0042] Further, the magnetic tripping device 21 comprises a first base 215, a moving iron core 211 and a static iron core 212; the static iron core 212 is fixedly connected with the first base 215; the moving iron core 211 is rotationally connected with 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 is attracted to the static iron core 212, and the moving iron core 211 can strike the adjusting support 22.

[0043] In order to enable the circuit breaker 2 to act when the current is greater than the first preset value, the magnetic tripping device 21 must be able to act when the current is greater than the first preset value. In the embodiment, the thickness of the moving iron core 211 and the static iron core 212 is increased to increase the magnetic attraction force of the moving iron core 211 and the static iron core 212, so that the magnetic tripping device 21 can act when the current is greater than the first preset value.

[0044] Further, the first base 215 is further provided with a conductive copper bar 213, and the moving iron core 211 and the static iron core 212 can both induct the current in the conductive copper bar 213.

[0045] The moving iron core 211 and the static iron core 212 induct the current in the main circuit conductive copper bar 213, and the moving iron core 211 and the static iron core 212 both become electromagnets. The moving iron core 211 is arranged above one end of the static iron core 212, the middle part of the moving iron core 211 is rotationally connected with the first base 215 and forms a rotation center 214, when the current is greater than the first preset value, one end of the moving iron core 211 moves downward and is attracted to the static iron core 212, the other end of the moving iron core 211 moves upward and contacts the pusher 221, and the pusher 221 is pushed to move upward.

[0046] Further, the adjusting support 22 comprises a support 225, a pusher 221, a first striking piece 222 and a first elastic piece 226; the support 225 comprises oppositely arranged base plates 2251 and adjusting plates 2252; the pusher 221 passes through the base plates 2251 and the adjusting plates 2252 in sequence, the magnetic tripping device 21 can strike the pusher 221 to drive the pusher 221 to move along the axial direction of the pusher 221 relative to the base plates 2251 and the adjusting plates 2252; the pusher 221 is provided with a protrusion, the protrusion can abut against the base plates 2251, and the first elastic piece 226 is abutted between the protrusion and the adjusting plates 2252; the first striking piece 222 is fixedly connected with the pusher 221, and the first striking piece 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 is attracted to the static iron core 212, the other end of the moving iron core 211 moves upward and contacts the pushing piece 221, and the pushing piece 221 is pushed to move upward, the protrusion moves upward with the pushing piece 221 and compresses the first elastic piece 226, and the pushing piece 221 drives the first striking piece 222 to move upward, so that the first striking piece 222 strikes the jump buckle structure 231 of the energy storage striking mechanism 23.

[0048] The adjusting support 22 transmits the striking force of the first striking piece 222 to the jump buckle structure 231 of the energy storage striking mechanism 23.

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

[0050] Further, the adjusting support 22 further comprises a first adjusting knob 223, the first adjusting knob 223 can drive the adjusting plate 2252 to move towards or away from the base plate 2251, and the first adjusting knob 223 is arranged inside the shell of the fusion switch.

[0051] By driving the adjusting plate 2252 to move towards or away from the base plate 2251 through the first adjusting knob 223, the compression amount of the first elastic piece 226 can be adjusted, and then the striking force output by the first striking piece 222 is adjusted, so that the size of the first preset value can be adjusted, and the user can set the first preset value according to the needs.

[0052] The first adjusting knob 223 is arranged inside the shell of the fusion switch, and the manufacturer can adjust the first preset value through the first adjusting knob 223 before the factory shipment.

[0053] Wherein, the specific structure and principle of how the first adjusting knob 223 adjusts the adjusting plate 2252 are the same as those of the prior art, and will not be repeated here.

[0054] Further, the adjusting support 22 further comprises a second adjusting knob 224, the second adjusting knob 224 can drive the adjusting plate 2252 to move towards or away from the base plate 2251, and the second adjusting knob 224 is arranged outside the shell of the fusion switch.

[0055] By driving the adjusting plate 2252 to move towards or away from the base plate 2251 through the second adjusting knob 224, the compression amount of the first elastic piece 226 can be adjusted, and then the striking force output by the first striking piece 222 is adjusted, so that the size of the first preset value can be adjusted, and the user can set the first preset value according to the needs.

[0056] The second adjusting knob 224 is arranged outside the shell of the fusion switch, and the user can adjust the first preset value through the second adjusting knob 224 after the factory shipment, which is convenient to operate.

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

[0058] Further, the energy storage striking mechanism 23 comprises a second base 235, a trip latch structure 231, a second elastic member 232, and a second striking member 234; one end of the second elastic member 232 is in abutment with the second base 235, and the other end of the second elastic member 232 is in abutment with the trip latch structure 231; the first striking member 222 can strike the trip latch structure 231; the second striking member 234 is in sliding connection with the second base 235, and the second elastic member 232 is connected with the second striking member 234, and 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.

[0059] The striking force of the first striking member 222 is transmitted to the trip latch structure 231 of the energy storage striking mechanism 23, and due to the energy storage capacity of the second elastic member 232, for example, the first striking member 222 outputs a striking force of 1N, which can make the second striking member 234 output a tripping force of about 10N to trip the circuit breaker 2, thereby realizing the low-current multiple instantaneous action of the circuit breaker 2.

[0060] When the trip latch structure 231 is not tripped, the second elastic member 232 is compressed between the second base 235 and the trip latch structure 231, and the second elastic member 232 stores energy; when the first striking member 222 strikes the trip latch structure 231, the trip latch structure 231 is released and no longer blocks the second elastic member 232, and the other end of the second elastic member 232 is elongated along the extension and retraction direction thereof, thereby driving the second striking member 234 to move forward along the extension and retraction direction of the second elastic member 232 to strike the circuit breaker 2 to trip, so that the circuit breaker 2 is actuated.

[0061] After the circuit breaker 2 is tripped and actuated, the energy storage rod 233 of the reclosing mechanism can be manually operated to compress the spring, and then the trip latch structure 231 is reset and the spring is again compressed between the base and the trip latch structure 231, so as to be ready for the next action. The specific structure and working principle of the reclosing mechanism are the same as those of the prior art, and will not be described here.

[0062] Further, 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 8 times the rated current value, 7 times the rated current value, 6 times the rated current value, or any other suitable form greater than the first preset value. When the current is greater than the second preset value, both the circuit breaker 2 and the fuse 3 can be actuated, and the actuation time of the circuit breaker 2 and the fuse 3 is different.

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

[0065] The manual switch 1 can be used for protection when the current value is any value, and the action time of the manual switch 1 is greater than or equal to 200 ms; the circuit breaker 2 is used for protection when the current value is greater than the first preset value, and the action time of the circuit breaker 2 is less than 30 ms; the circuit breaker 2 and the fuse 3 are used for protection when the current value is greater than the second preset value, the action time of the circuit breaker 2 is 10 ms to 30 ms, the action time of the fuse 3 is less than 5 ms, and the fuse 3 acts first, and the circuit breaker 2 completes the tripping action after the fuse 3 is disconnected.

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

[0067] The circuit breaker 2 has a circuit breaker shell, and the fuse 3 has a fuse shell. The circuit breaker shell and the fuse shell can be spliced into one whole, and the splicing mode can be clamping or threaded connection. The circuit breaker shell and the fuse shell can also be integrally formed to form one whole. The circuit breaker shell and the fuse shell can also be separately arranged to be two independent components without interference.

[0068] Embodiment 2

[0069] The new energy system provided in the embodiment includes the fusion switch provided in the embodiment 1. When the current is less than or equal to the first preset value, the manual switch 1 can be used to turn on and off the circuit. When the current is greater than the first preset value, the magnetic tripping device 21 can be attracted and drive the adjusting bracket 22 to hit the energy storage hitting mechanism 23, the hitting mechanism amplifies the hitting force of the adjusting bracket 22, so that the hitting mechanism can hit the circuit breaker 2 to trip, and the circuit breaker 2 can act when the current is greater than the first preset value to protect the circuit. When the current is greater than the second preset value, the circuit breaker 2 and the fuse 3 can act to protect the circuit. The fusion switch can protect the circuit when the current is greater than the first preset value, and the circuit breaker 2 acts, wherein the first preset value is less than or equal to 2 times the rated current value, that is, the circuit breaker 2 can act to protect the circuit when the current is greater than 2 times the rated current value. When the current is 2 times to 6 times the rated current, the fusion switch can protect the circuit, and the gap of the protection interval of the fusion switch is reduced.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

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) 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 the second preset value, the fuse (3) can be activated.

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 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 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).

5. The fusion switch according to claim 4, 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.

6. The fusion switch according to claim 4, 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.

7. The fusion switch according to claim 4, 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).

8. The fusion switch according to claim 1, characterized in that, The second preset value is less than or equal to 8 times the rated current value.

9. 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.

10. A new energy system, characterized in that, The fusion switch includes any one of claims 1-9.

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