Hybrid solid-state circuit breaker and power supply system

Abstract

The utility model provides a hybrid solid-state circuit breaker and a power supply system, and relates to the technical field of low-voltage electric appliances. The hybrid solid-state circuit breaker comprises a first terminal, a second terminal, a first switch and a first loop, the first loop is provided with a first connection point and a second connection point, the first switch is electrically connected between the first terminal and the first connection point, and the second connection point is electrically connected with the second terminal; the first loop comprises a mechanical branch circuit, a power electronic branch circuit and an energy absorption branch circuit, and the mechanical branch circuit, the power electronic branch circuit and the energy absorption branch circuit are connected in parallel between the first connection point and the second connection point; the mechanical branch is connected with a second switch, and the first switch and the second switch are arranged in a linkage mode so that the first switch and the second switch can be switched off synchronously. The hybrid solid-state circuit breaker and the power supply system can improve the power-off reliability of the hybrid solid-state circuit breaker, thereby improving the safety performance of the hybrid solid-state circuit breaker.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, and in particular to a hybrid solid-state circuit breaker and a power supply system. Background Art

[0002] DC circuit breakers come in three main types: mechanical, solid-state, and hybrid solid-state. Traditional mechanical low-voltage circuit breakers have poor controllability and difficulty interrupting DC currents, often requiring multi-stage series connections or amplified arc-extinguishing systems to meet performance requirements. While solid-state breakers offer fast interruption times, long lifespans, and reliable operation, their high cost makes widespread adoption difficult. In contrast, hybrid solid-state breakers, which connect electronic components to mechanical breakers, offer a more viable solution because they address both the performance issues of mechanical breakers and the high cost of solid-state breakers.

[0003] Due to the structural relationship of the hybrid solid-state circuit breaker itself, when its mechanical branch is disconnected, it is impossible to clearly determine whether its power electronic branch and energy absorption branch have been disconnected. Therefore, it is possible that the hybrid solid-state circuit breaker is still in the "off" state. In this way, the circuit is still energized, which creates a safety hazard. Utility Model Content

[0004] The purpose of the present utility model is to provide a hybrid solid-state circuit breaker and a power supply system, which can improve the power-off reliability of the hybrid solid-state circuit breaker, thereby improving the safety performance of the hybrid circuit breaker.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In one aspect, the present invention provides a hybrid solid-state circuit breaker, comprising a first terminal, a second terminal, a first switch, and a first circuit. The first circuit has a first connection point and a second connection point, the first switch is electrically connected between the first terminal and the first connection point, and the second connection point is electrically connected to the second terminal. The first circuit includes a mechanical branch, a power electronic branch, and an energy absorption branch, the mechanical branch, the power electronic branch, and the energy absorption branch being connected in parallel between the first connection point and the second connection point. The mechanical branch is connected to a second switch, and the first and second switches are arranged in a linked manner so that the first and second switches can be opened synchronously. This hybrid solid-state circuit breaker and power supply system can improve the power-off reliability of the hybrid solid-state circuit breaker, thereby improving the safety performance of the hybrid circuit breaker.

[0007] Optionally, the first switch includes a first moving contact and a first static contact, one of the first moving contact and the first static contact is electrically connected to the first terminal and the other is electrically connected to the first connection point; the second switch includes a second moving contact and a second static contact, one of the second moving contact and the second static contact is electrically connected to the first connection point and the other is electrically connected to the second connection point; the first moving contact and the second moving contact are arranged in linkage so that the first switch and the second switch can be opened synchronously.

[0008] Optionally, the hybrid solid-state circuit breaker further includes a linkage member, one end of the linkage member is connected to the first moving contact and the other end of the linkage member is connected to the second moving contact.

[0009] Optionally, the hybrid solid-state circuit breaker further includes a first operating mechanism and a second operating mechanism, the first operating mechanism cooperates with the first moving contact drive, the second operating mechanism drives the second moving contact, and the first operating mechanism and the second operating mechanism are arranged in linkage so that the first moving contact and the second moving contact can be opened synchronously.

[0010] Optionally, one end of the first moving contact away from the first static contact is connected to the end of the second moving contact away from the second static contact to form a moving contact structure. The moving contact structure is driven to move and can synchronously disengage from the first static contact and the second static contact, so that the first switch and the second switch are synchronously opened.

[0011] Optionally, the moving contact structure is rotatably connected to the housing of the hybrid solid-state circuit breaker.

[0012] Optionally, the hybrid solid-state circuit breaker further includes a third operating mechanism, which is driven and cooperated with the moving contact structure, and is used to drive the moving contact structure to move.

[0013] Optionally, the hybrid solid-state circuit breaker further includes a circuit board, and the power electronic branch and the energy absorption branch are respectively integrated on the circuit board.

[0014] Optionally, the hybrid solid-state circuit breaker further includes a first shell and a second shell connected to each other, the first switch and the second switch are disposed in the first shell, and the circuit board is disposed in the second shell.

[0015] Optionally, the first terminal and the second terminal have opposite polarities.

[0016] Another aspect of the present invention provides a power supply system, which includes the hybrid solid-state circuit breaker mentioned above.

[0017] The beneficial effects of the utility model include:

[0018] The hybrid solid-state circuit breaker provided in the present application includes a first terminal, a second terminal, a first switch and a first circuit, the first circuit has a first connection point and a second connection point, the first switch is electrically connected between the first terminal and the first connection point, and the second connection point is electrically connected to the second terminal; the first circuit includes a mechanical branch, a power electronic branch and an energy absorption branch, the mechanical branch, the power electronic branch and the energy absorption branch are connected in parallel between the first connection point and the second connection point; the mechanical branch is connected to the second switch, and the first switch and the second switch are arranged in a linkage so that the first switch and the second switch can be opened synchronously. The present application forms a first circuit by providing a mechanical branch, a power electronic branch, and an energy absorption branch connected in parallel, and connects the first circuit and a first switch in series between the first terminal and the second terminal. The hybrid solid-state circuit breaker thus formed has a lower cost than a pure solid-state circuit breaker and better performance than a pure mechanical circuit breaker. By arranging the second switch on the mechanical branch and the first switch of the hybrid solid-state circuit breaker in a linked manner, the entire system circuit can be kept in a power-off state when the mechanical branch is disconnected, which can effectively improve the power-off reliability of the hybrid solid-state circuit breaker and thereby improve the safety performance of the hybrid circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a hybrid solid-state circuit breaker provided by an embodiment of the present utility model;

[0021] Figure 2 The second structural diagram of the hybrid solid-state circuit breaker provided by the embodiment of the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0023] Figure 4 This is the third structural schematic diagram of the hybrid solid-state circuit breaker provided in an embodiment of the present utility model.

[0024] Icon: 10-first terminal; 20-second terminal; K1-first switch; 41-first moving contact; 42-first static contact; 30-first circuit; 31-first connection point; 32-second connection point; 33-mechanical branch; K2-second switch; 51-second moving contact; 52-second static contact; 34-power electronic branch; 35-energy absorption branch; 61-moving contact structure; 62-third operating mechanism; 71-first shell; 72-second shell. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] Please refer to Figure 1 and Figure 2 This embodiment provides a hybrid solid-state circuit breaker, comprising a first terminal 10, a second terminal 20, a first switch K1, and a first circuit 30. The first circuit 30 has a first connection point 31 and a second connection point 32. The first switch K1 is electrically connected between the first terminal 10 and the first connection point 31, and the second connection point 32 is electrically connected to the second terminal 20. The first circuit 30 includes a mechanical branch 33, a power electronic branch 34, and an energy absorption branch 35. The mechanical branch 33, the power electronic branch 34, and the energy absorption branch 35 are connected in parallel between the first connection point 31 and the second connection point 32. The mechanical branch 33 is connected to a second switch K2. The first switch K1 and the second switch K2 are arranged in a linked manner so that the first switch K1 and the second switch K2 can be opened synchronously. This hybrid solid-state circuit breaker and power supply system can improve the power-off reliability of the hybrid solid-state circuit breaker, thereby enhancing the safety performance of the hybrid circuit breaker.

[0032] The hybrid solid-state circuit breaker of this embodiment includes a first switch K1 and a first loop 30, which are connected in series between a first terminal 10 and a second terminal 20. In this embodiment, if the hybrid solid-state circuit breaker is used for direct current, the first terminal 10 and the second terminal 20 may optionally have opposite polarities. Of course, in other embodiments, the hybrid solid-state circuit breaker may also be used for alternating current.

[0033] The first loop 30 has a first connection point 31 and a second connection point 32 . The first switch K1 is electrically connected between the first terminal 10 and the first connection point 31 , and the second connection point 32 is electrically connected to the second terminal 20 .

[0034] In this embodiment, the first loop 30 includes a mechanical branch 33, a power electronic branch 34, and an energy absorption branch 35, wherein the mechanical branch 33, the power electronic branch 34, and the energy absorption branch 35 are connected in parallel between the first connection point 31 and the second connection point 32. Figure 1 shown.

[0035] It should be noted that when the hybrid solid-state circuit breaker is operating normally, the mechanical branch 33 is turned on. When the mechanical branch 33 is disconnected, after the mechanical branch 33 is disconnected, the current is commutated to the power electronic branch 34, which cuts off the current, and the energy absorption branch 35 absorbs the system energy.

[0036] In this embodiment, the mechanical branch 33 is connected to a second switch K2. This second switch K2 is linked to the first switch K1, enabling synchronous opening of the first and second switches K1 and K2. That is, when the second switch K2 is opened, the first switch K1 is also opened synchronously. This allows the hybrid solid-state circuit breaker's entire circuit to be disconnected simultaneously and reliably when the mechanical branch 33 is disconnected. This avoids the prior art issue of the hybrid solid-state circuit breaker's entire circuit remaining energized even when the mechanical branch 33 is disconnected, thereby reducing potential safety hazards associated with the prior art.

[0037] In addition, it should be noted that the above-mentioned first switch K1 and second switch K2 are arranged in a linkage manner, which can only enable the first switch K1 and second switch K2 to achieve synchronous opening, or can also achieve synchronous closing on the basis of achieving synchronous opening. This application does not impose any restrictions on this, as long as the first switch K1 and second switch K2 can be ensured to be synchronously opened.

[0038] It should be noted that the first connection point 31 and the second connection point 32 mentioned above are two parallel points of the first loop 30 respectively.

[0039] In summary, the hybrid solid-state circuit breaker provided in the present application includes a first terminal 10, a second terminal 20, a first switch K1 and a first circuit 30. The first circuit 30 has a first connection point 31 and a second connection point 32. The first switch K1 is electrically connected between the first terminal 10 and the first connection point 31, and the second connection point 32 is electrically connected to the second terminal 20; the first circuit 30 includes a mechanical branch 33, a power electronic branch 34 and an energy absorption branch 35. The mechanical branch 33, the power electronic branch 34 and the energy absorption branch 35 are connected in parallel between the first connection point 31 and the second connection point 32; the mechanical branch 33 is connected to the second switch K2, and the first switch K1 and the second switch K2 are arranged in linkage so that the first switch K1 and the second switch K2 can be opened synchronously. The present application forms a first loop 30 by providing a mechanical branch 33, a power electronic branch 34, and an energy absorption branch 35 connected in parallel, and connects the first loop 30 and the first switch K1 in series between the first terminal 10 and the second terminal 20. The hybrid solid-state circuit breaker thus formed has a lower cost than a pure solid-state circuit breaker and better performance than a pure mechanical circuit breaker. By arranging the second switch K2 on the mechanical branch 33 and the first switch K1 of the hybrid solid-state circuit breaker in a linked manner, the entire system loop can be kept in a power-off state when the mechanical branch 33 is disconnected, which can effectively improve the power-off reliability of the hybrid solid-state circuit breaker and thereby improve the safety performance of the hybrid circuit breaker.

[0040] Please refer to Figure 2 Optionally, the first switch K1 includes a first moving contact 41 and a first static contact 42, one of the first moving contact 41 and the first static contact 42 is electrically connected to the first terminal 10 and the other is electrically connected to the first connection point 31; the second switch K2 includes a second moving contact 51 and a second static contact 52, one of the second moving contact 51 and the second static contact 52 is electrically connected to the first connection point 31 and the other is electrically connected to the second connection point 32; the first moving contact 41 and the second moving contact 51 are arranged in linkage so that the first switch K1 and the second switch K2 can be opened synchronously.

[0041] Among them, one of the first moving contact 41 and the first static contact 42 is electrically connected to the first terminal 10, and the other is electrically connected to the first connection point 31. This application does not limit the specific connection method, and those skilled in the art can choose it according to their needs. Figure 1 As shown, the first moving contact 41 can be electrically connected to the first connection point 31 , and the first static contact 42 can be electrically connected to the first terminal 10 .

[0042] Similarly, one of the second moving contact 51 and the second static contact 52 is electrically connected to the first connection point 31, and the other is electrically connected to the second connection point 32. Figure 1As shown, the second moving contact 51 is electrically connected to the second connection point 32 , and the second static contact 52 is electrically connected to the first connection point 31 .

[0043] In addition, the second moving contact 51 and the first moving contact 41 are arranged in linkage. The second moving contact 51 and the first moving contact 41 can be directly linked or indirectly linked, as long as the first moving contact 41 can be opened synchronously with the second moving contact 51 when it is opened.

[0044] For example, in one feasible implementation, the hybrid solid-state circuit breaker optionally further includes a linkage member, one end of which is connected to the first moving contact 41 and the other end of which is connected to the second moving contact 51. That is, the first moving contact 41 and the second moving contact 51 can be directly linked to achieve synchronous opening. The linkage member can be a linkage rod connecting the first moving contact 41 and the second moving contact 51.

[0045] For another example, in another feasible embodiment, optionally, the hybrid solid-state circuit breaker further includes a first operating mechanism and a second operating mechanism, the first operating mechanism is driven in conjunction with the first moving contact 41, and the second operating mechanism is driven by the second moving contact 51, and the first operating mechanism and the second operating mechanism are arranged in linkage so that the first moving contact 41 and the second moving contact 51 can be opened synchronously.

[0046] That is, the first moving contact 41 is driven in conjunction with the first operating mechanism, which is used to drive the first moving contact 41 to open or close the circuit breaker. The second moving contact 51 is driven in conjunction with the second operating mechanism, which is used to drive the second moving contact 51 to open or close the circuit breaker. The first and second operating mechanisms are arranged in a linked manner. That is, when the second operating mechanism is driven to open the second moving contact 51, the second operating mechanism can simultaneously drive the first operating mechanism to open the first moving contact 41.

[0047] For example, in another feasible embodiment, as Figure 2 and Figure 3 As shown, optionally, one end of the first moving contact 41 away from the first static contact 42 is connected to the end of the second moving contact 51 away from the second static contact 52 to form a moving contact structure 61. The moving contact structure 61 is driven to move and can synchronously disengage from the first static contact 42 and the second static contact 52, so that the first switch K1 and the second switch K2 are synchronously opened.

[0048] That is, in this embodiment, the first moving contact 41 and the second moving contact 51 are connected to each other to form a moving contact structure 61. The first moving contact 41 and the second moving contact 51 can be integrally formed or can be two parts connected by a connector, which is not limited in this application.

[0049] In this embodiment, a double-breakpoint switch can be formed by connecting the first moving contact 41 and the second moving contact 51 to form a moving contact structure 61, wherein one end of the moving contact structure 61 can serve as the moving contact of the first switch K1, and the other end of the moving contact structure 61 can serve as the moving contact of the second switch K2. By driving the moving contact structure 61 to move, it can be synchronously disengaged from the first static contact 42 and the second static contact 52, so that the first switch K1 and the second switch K2 can be synchronously opened.

[0050] Optionally, the movable contact structure 61 can be rotatably connected to the housing of the hybrid solid-state circuit breaker (when the housing of the hybrid solid-state circuit breaker includes a first housing 71 and a second housing 72 mentioned below, the movable contact structure 61 can be rotatably connected to the first housing 71 of the hybrid solid-state circuit breaker). In this way, by driving the movable contact structure 61 to rotate relative to the hybrid solid-state circuit breaker, the movable contact structure 61 can be opened or closed with the first static contact 42 and the second static contact 52, respectively.

[0051] Of course, driving the moving contact structure 61 to rotate to achieve disconnection from the first static contact 42 and the second static contact 52 is only an example. In other embodiments, the moving contact structure 61 can also be driven to move linearly to achieve disconnection from the first static contact 42 and the second static contact 52.

[0052] For example, optionally, the hybrid solid-state circuit breaker may further include a third operating mechanism 62, which is coupled to the movable contact structure 61 and is used to drive the movable contact structure 61. In other words, the third operating mechanism 62 can be provided to drive the movable contact structure 61 to move, thereby achieving disconnection between the first and second stationary contacts 42, 52 at both ends of the movable contact structure 61.

[0053] In addition, it should be noted that the present application connects the end of the first moving contact 41 away from the first static contact 42 with the end of the second moving contact 51 away from the second static contact 52 to form a moving contact structure 61 with double breakpoints. In this way, an operating mechanism (third operating mechanism 62) can be set to drive the moving contact structure 61, so as to achieve synchronous opening of the first switch K1 and the second switch K2. In this way, the hybrid solid-state circuit breaker can save a set of operating mechanisms compared with the existing technology, which can reduce the number of components of the hybrid solid-state circuit breaker, reduce the volume of the hybrid solid-state circuit breaker, and reduce costs.

[0054] The third operating mechanism 62 can be used to drive the movable contact structure 61 to rotate or move linearly. In addition, the driving point of the third operating mechanism 62 and the movable contact structure 61 can be in the middle position of the movable contact structure 61, such as Figure 2 and Figure 3 shown.

[0055] To make the overall structure of the hybrid solid-state circuit breaker more regular, the hybrid solid-state circuit breaker can optionally further include a circuit board, on which the power electronic branch 34 and the energy absorption branch 35 are respectively integrated. In this way, the circuit structure of the hybrid solid-state circuit breaker is more concise.

[0056] In addition, in this embodiment, please refer to Figure 4 The hybrid solid-state circuit breaker also includes a first housing 71 and a second housing 72 that are interconnected. The first switch K1 and the second switch K2 are disposed within the first housing 71, and the circuit board is disposed within the second housing 72. Thus, the mechanical components of the first and second switches K1 and K2 can be disposed within the first housing 71, while the circuit components integrating the power electronic branch 34 and the energy absorption branch 35 can be disposed within the second housing 72. The mechanical components and the circuit components can be relatively separate, facilitating assembly, connection, and subsequent maintenance of the hybrid solid-state circuit breaker.

[0057] Another aspect of the present invention provides a power supply system including the aforementioned hybrid solid-state circuit breaker. The specific structure and technical effects of the hybrid solid-state circuit breaker have been previously described and illustrated in detail, and therefore will not be further elaborated upon in this application. This power supply system ensures that the entire system circuit remains de-energized when the mechanical branch 33 is disconnected, effectively improving the disconnection reliability of the hybrid solid-state circuit breaker and thereby enhancing the safety performance of the hybrid circuit breaker.

[0058] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A hybrid solid-state circuit breaker, characterized in that: The invention comprises a first terminal (10), a second terminal (20), a first switch (K1), and a first loop (30), wherein the first loop (30) has a first connection point (31) and a second connection point (32), the first switch (K1) is electrically connected between the first terminal (10) and the first connection point (31), and the second connection point (32) is electrically connected to the second terminal (20); The first circuit (30) comprises a mechanical branch (33), a power electronic branch (34) and an energy absorption branch (35); the mechanical branch (33), the power electronic branch (34) and the energy absorption branch (35) are connected in parallel between the first connection point (31) and the second connection point (32); a second switch (K2) is connected to the mechanical branch (33); the first switch (K1) and the second switch (K2) are arranged in a linkage manner so that the first switch (K1) and the second switch (K2) can be opened synchronously.

2. The hybrid solid-state circuit breaker according to claim 1, characterized in that: The first switch (K1) comprises a first moving contact (41) and a first static contact (42), one of the first moving contact (41) and the first static contact (42) being electrically connected to the first terminal (10) and the other being electrically connected to the first connection point (31); the second switch (K2) comprises a second moving contact (51) and a second static contact (52), one of the second moving contact (51) and the second static contact (52) being electrically connected to the first connection point (31) and the other being electrically connected to the second connection point (32); the first moving contact (41) and the second moving contact (51) are arranged in linkage so that the first switch (K1) and the second switch (K2) can be opened synchronously.

3. The hybrid solid-state circuit breaker according to claim 2, characterized in that: The hybrid solid-state circuit breaker further comprises a linkage member, one end of which is connected to the first moving contact (41) and the other end of which is connected to the second moving contact (51).

4. The hybrid solid-state circuit breaker according to claim 2, characterized in that: The hybrid solid-state circuit breaker further comprises a first operating mechanism and a second operating mechanism, wherein the first operating mechanism is driven in cooperation with the first moving contact (41), and the second operating mechanism is driven by the second moving contact (51), and the first operating mechanism and the second operating mechanism are arranged in a linkage manner so that the first moving contact (41) and the second moving contact (51) can be opened synchronously.

5. The hybrid solid-state circuit breaker according to claim 2, characterized in that: One end of the first moving contact (41) away from the first static contact (42) is connected to one end of the second moving contact (51) away from the second static contact (52) to form a moving contact structure (61). The moving contact structure (61) is driven to move and can synchronously disengage from the first static contact (42) and the second static contact (52), so as to synchronously open the first switch (K1) and the second switch (K2).

6. The hybrid solid-state circuit breaker according to claim 5, characterized in that: The movable contact structure (61) is rotatably connected to the housing of the hybrid solid-state circuit breaker.

7. The hybrid solid-state circuit breaker according to claim 5, characterized in that: The hybrid solid-state circuit breaker further comprises a third operating mechanism (62), wherein the third operating mechanism (62) is driven and matched with the moving contact structure (61), and the third operating mechanism (62) is used to drive the moving contact structure (61) to move.

8. The hybrid solid-state circuit breaker according to any one of claims 1 to 7, characterized in that: The hybrid solid-state circuit breaker further comprises a circuit board, and the power electronic branch (34) and the energy absorption branch (35) are respectively integrated on the circuit board.

9. The hybrid solid-state circuit breaker according to claim 8, characterized in that: The hybrid solid-state circuit breaker further comprises a first housing (71) and a second housing (72) connected to each other, the first switch (K1) and the second switch (K2) are placed in the first housing (71), and the circuit board is placed in the second housing (72).

10. The hybrid solid-state circuit breaker according to claim 1, wherein: The first terminal (10) and the second terminal (20) have opposite polarities.

11. A power supply system, characterized in that: A hybrid solid-state circuit breaker comprising the hybrid solid-state circuit breaker according to any one of claims 1 to 10.

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