Electric disconnecting switch and energy storage system

Abstract

The utility model discloses an electric disconnecting switch and an energy storage system, the electric disconnecting switch comprises a contact unit and a driving mechanism, and the contact unit comprises a moving contact part and a static contact part which are matched with each other; the driving mechanism comprises a rotating shaft and a motor used for providing rotation driving force for the rotating shaft, and the rotating shaft is in linkage with the moving contact part to rotate through rotation, so that the moving contact part is in contact with or separated from the static contact part; the contact unit is provided with an arc extinguishing structure so as to extinguish an arc generated when the moving contact part is separated from the static contact part. According to the utility model, the electrical distance of the contact unit in an off state can reach a specified safe isolation distance, and the arc extinguishing function is realized, so that the device can be applied to a charge-discharge loop of an energy storage system to control the connection or disconnection of the charge-discharge loop, thereby simplifying the structure and control logic, reducing the cost, reducing the space required by installation, and improving the reliability of the device. And the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to an electric disconnect switch and energy storage system. Background Technology

[0002] In current battery energy storage systems, each battery cluster has a high-voltage box to control the charging and discharging of the batteries. The operating voltage of these high-voltage boxes varies from 1000VDC to 2000VDC, and the operating current ranges from 200A to 400A. A high-voltage box typically includes a disconnecting switch and two high-voltage DC contactors to control the on / off state of the battery charging and discharging circuit. This is because two high-voltage DC contactors cannot provide isolation for operating voltages of 1000VDC to 2000VDC, and the disconnecting switch lacks arc-extinguishing functionality. Clearly, traditional high-voltage boxes require more components to control the on / off state of the battery charging and discharging circuit, require more installation space, are cumbersome to assemble, have more complex control logic, and the disconnecting switch can only be operated manually, resulting in low efficiency. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing an electric disconnect switch and an energy storage system. The electric disconnect switch can be used in an energy storage system, and while fulfilling the on / off control function of the charging and discharging circuit, it also simplifies the structure and control logic, reduces the space required for installation, and improves working efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an electric disconnect switch, including a contact unit and a drive mechanism. The contact unit includes a moving contact part and a stationary contact part that cooperate with each other. The drive mechanism includes a rotating shaft and a motor for providing rotational driving force to the rotating shaft. The rotating shaft rotates in conjunction with the rotating contact part, so that the moving contact part contacts or separates from the stationary contact part. The contact unit is provided with an arc extinguishing structure to extinguish the arc generated when the moving contact part separates from the stationary contact part.

[0005] In a preferred embodiment, there are multiple contact units, and the moving contact portions of the multiple contact units are linked together so that the multiple contact units close or open synchronously.

[0006] In a preferred embodiment, the rotating shaft can be manually driven to rotate, and the driving mechanism further includes a control component for controlling whether the circuit containing the motor is turned on or off; the control component includes a control switch connected in series with the motor, which is driven to close or open by a control element, and the control element can be operated.

[0007] In a preferred embodiment, the drive mechanism further includes an energy storage component. The rotating shaft stores energy by rotating in conjunction with the energy storage component. The energy storage component releases the stored energy to cause the moving contact portion to contact or separate from the stationary contact portion.

[0008] In a preferred embodiment, the rotating shaft is provided with a driving wheel, the moving contact portion is provided with a driven wheel, and the energy storage assembly includes an energy storage drive wheel and at least one movable component. The movable component includes a movable rod, a push rod, and an energy storage spring. The energy storage drive wheel is located between the driving wheel and the driven wheel. The push rod is located on the energy storage drive wheel, and one end of the push rod is adapted to slide into a first arc-shaped hole provided on the driving wheel, while the other end of the push rod is adapted to slide into a second arc-shaped hole provided on the driven wheel. The movable rod is rotatably and slidably mounted on a fixed seat located outside the energy storage drive wheel, and one end of the movable rod is movably connected to the push rod. The energy storage spring is sleeved on the movable rod and cooperates between the push rod and the fixed seat.

[0009] In a preferred embodiment, the moving contact portion includes a contact support and a moving contact, the stationary contact portion includes two stationary contacts, the moving contact is disposed on the contact support and rotates together with the contact support, so that the two ends of the moving contact contact or separate from the two stationary contacts respectively.

[0010] In a preferred embodiment, the arc-extinguishing structure includes arc-extinguishing chambers respectively provided at the locations where each stationary contact contacts the moving contact, and the arc-extinguishing chambers are provided with permanent magnets and / or arc-extinguishing grids.

[0011] In a preferred embodiment, an auxiliary switch is further included for indicating the open or closed state of the contact unit. The auxiliary switch is linked to the moving contact portion, or the auxiliary switch is driven by the drive mechanism to achieve closure or opening.

[0012] In a preferred embodiment, the auxiliary switch is triggered to close or open by a rotatably mounted drive rod. The drive rod is driven to rotate when the moving contact portion rotates in the opening direction, and the drive rod is driven to reset by a reset element to release the auxiliary switch; the auxiliary switch is a micro switch.

[0013] In a preferred embodiment, the device further includes a housing, in which the contact unit and the drive mechanism are disposed; one end of the rotating shaft is provided with a first operating part, and the housing is provided with a first clearance hole corresponding to the first operating part; the control component is provided with a second operating part, and the housing is provided with a second clearance hole corresponding to the second operating part.

[0014] In a preferred embodiment, the motor is connected to the rotating shaft via a gear transmission assembly. The gear transmission assembly includes a worm, a worm wheel, a first gear, and a second gear. The worm is coaxially connected to the output shaft of the motor. The axis of the worm wheel is parallel to the axis of the rotating shaft and meshes with the worm. The first gear is coaxially connected to the worm wheel, and the second gear is coaxially connected to the rotating shaft and meshes with the first gear.

[0015] This utility model also provides an energy storage system, including a charging and discharging circuit, and at least one electrically disconnecting switch as described above, wherein the contact unit is connected to the charging and discharging circuit.

[0016] In a preferred embodiment, there are multiple contact units, and the moving contact portions of the multiple contact units are linked together so that the multiple contact units close or open synchronously; the charging and discharging circuit includes a main positive branch and a main negative branch; wherein, of the two contact units, one contact unit is connected to the main positive branch and the other contact unit is connected to the main negative branch.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The electric disconnect switch of this utility model uses a motor as the power source to drive the rotation of the moving contact. It can utilize the large stroke characteristics of the motor to achieve the large operating stroke requirements of the moving contact, thereby ensuring that the electrical distance of the contact unit in the disconnected state reaches the specified safe isolation distance. In addition, the contact unit is equipped with an arc extinguishing structure, which can extinguish the arc generated when the moving contact and the stationary contact are separated. This allows this utility model to be applied to the charging and discharging circuit of the energy storage system to control the connection or disconnection of the charging and discharging circuit. Therefore, only one or two electric disconnect switches of this utility model are needed to replace one disconnect switch and two high-voltage DC contactors in the traditional high-voltage box, thereby achieving the effects of simplifying the structure and control logic, reducing costs, reducing the space required for installation, and improving work efficiency.

[0019] 2. Furthermore, multiple contact units are provided, and the moving contact parts of the multiple contact units are linked together, so that the multiple contact units close or open synchronously. Therefore, by using one electric disconnecting switch of this utility model, the main positive branch and the main negative branch of the charging and discharging circuit can be controlled at the same time, which is conducive to further reducing costs and reducing the space required for installation.

[0020] 3. The rotating shaft can be manually driven to rotate, making this utility model convenient for staff to perform on-site inspection and maintenance. In particular, the drive mechanism also includes a control component for controlling whether the circuit where the motor is located is conducting or not, so that when the staff performs on-site manual operation, the control component can be used to lock the motor to prevent the motor from being accidentally powered on, thereby making the on-site manual operation safer and more reliable.

[0021] 4. The energy storage component enables the present invention to achieve instantaneous connection and disconnection of the contact unit, avoiding the adverse effects of long contact arc burning time caused by slow motor operation speed.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the electric disconnect switch and energy storage system of the present invention are not limited to the embodiments. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the electric disconnect switch of this utility model. Figure 1 (Reflecting on a local aspect)

[0024] Figure 2 This is a three-dimensional structural diagram of the electric disconnect switch of this utility model. Figure 2 (Reflecting on a local aspect);

[0025] Figure 3 This is a three-dimensional structural diagram of the contact unit, energy storage component, rotating shaft, etc. of this utility model in a combined state;

[0026] Figure 4 This is a schematic diagram of the state of the energy storage component of this utility model. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the state of the energy storage component of this utility model. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the state of the energy storage component of this utility model. Figure 3 ;

[0029] Figure 7 This is a top view (showing a part) of the electric disconnect switch of this utility model;

[0030] Figure 8 This is a three-dimensional structural schematic diagram of the electric disconnect switch of this utility model;

[0031] In the diagram, 1. Moving contact; 11. Moving contact; 12. Contact support; 13. Contact spring; 14. Driven wheel; 141. Second arc-shaped hole; 2. Stationary contact; 3. Arc-extinguishing chamber; 4. Main control board; 5. Housing; 51. First clearance hole; 52. Second clearance hole; 6. Drive mechanism; 61. Rotating shaft; 611. Operating hole; 611; 62. Motor; 63. Worm gear; 64. Worm wheel; 65. First gear; 66. Driving wheel; 661. First arc-shaped hole; 67. Control switch; 68. Control component; 681. Operating lever; 69. Energy storage component; 691. Energy storage drive wheel; 692. Movable rod; 693. Energy storage spring; 694. Top rod; 695. Fixed base; 7. Support frame; 8. Auxiliary switch; 9. Drive rod; 10. Elastic component. Detailed Implementation

[0032] In this invention, the terms "first," "second," etc., are used only to distinguish similar objects, not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0033] Please see Figures 1-8 As shown, an electric disconnecting switch of this utility model includes a contact unit and a drive mechanism 6. The contact unit includes a moving contact portion 1 and a stationary contact portion that cooperate with each other. The drive mechanism 6 includes a rotating shaft 61 and a motor 62 for providing rotational driving force to the rotating shaft 61. The rotating shaft 61 rotates in conjunction with the rotating moving contact portion 1, causing the moving contact portion 1 to contact or separate from the stationary contact portion. The contact unit is provided with an arc-extinguishing structure to extinguish the arc generated when the moving contact portion 1 separates from the stationary contact portion.

[0034] As a preferred embodiment, multiple contact units are provided, and the moving contact portions 1 of the multiple contact units are linked together, so that the multiple contact units close or open synchronously. In this embodiment, two contact units are used as an example, but it is not limited to this.

[0035] In this embodiment, the rotating shaft 61 can be manually driven to rotate, facilitating on-site maintenance by personnel. The drive mechanism 6 also includes a control component for controlling whether the circuit containing the motor 62 is conducting or not. This control component allows personnel to lock the motor during manual operation, preventing accidental energization and making manual operation safer and more reliable. Specifically, the control component includes a control switch 67 connected in series with the motor 62. This control switch 67 is driven to close or open by a control element 68, which is operable. Specifically, the control switch 67 is a microswitch, and the control element 68 is slidably configured, triggering or releasing the control switch 67 by sliding it.

[0036] The motor 62 is specifically connected to the rotating shaft via a gear transmission assembly, but this is not the only embodiment. In other embodiments, the motor directly drives the rotating shaft to rotate. The gear transmission assembly includes a worm 63, a worm wheel 64, a first gear 65, and a second gear. The worm 63 is coaxially connected to the output shaft of the motor 62. The axis of the worm wheel 64 is parallel to the axis of the rotating shaft 61, and the worm wheel 64 meshes with the worm 63. The first gear 65 is coaxially connected to the worm wheel 64, and the second gear is coaxially connected to the rotating shaft 61, with the first gear 65 meshing with the second gear. This invention also includes a main control board 4, which is electrically connected to the motor 62 to control whether the motor 62 starts or stops.

[0037] The drive mechanism 6 of this invention also includes an energy storage component 69. The rotating shaft 61 stores energy by rotating in conjunction with the energy storage component 69. The energy storage component 69 releases the stored energy to drive the moving contact part 1 to contact or separate from the stationary contact part. The setting of the energy storage component 69 enables this invention to achieve instantaneous connection and disconnection of the contact unit, avoiding the adverse effects of long contact arc burning time caused by the slow running speed of the motor 62.

[0038] like Figure 3As shown, a drive wheel 66 is provided on the rotating shaft 61. This drive wheel 66 is the same as the second gear mentioned above, but it is not limited to this. In other embodiments, the drive wheel 66 and the second gear are separate from each other. The moving contact portion 1 is provided with a driven wheel 14. The energy storage assembly 69 includes an energy storage drive wheel 691 and at least one movable component. The movable component includes a movable rod 692, a push rod 694, and an energy storage spring 693. The energy storage drive wheel 691 is located between the drive wheel 66 and the driven wheel 14. The drive wheel 66 has a first arc-shaped hole 661 concentrically arranged with the movable component, and the driven wheel 14 has a second arc-shaped hole 141 concentrically arranged with the movable component. The push rod 694 is provided on the energy storage drive wheel 691. The drive wheel 691 has one end of a push rod 694 that is slidably connected to the first arc-shaped hole 661 of the drive wheel 66, and the other end of the push rod 694 that is slidably connected to the second arc-shaped hole 141 of the driven wheel 14. A movable rod 692 is rotatably and slidably mounted on a fixed seat 695 located outside the energy storage drive wheel 691, and one end of the movable rod 692 is movably connected to the push rod 694. An energy storage spring 693 is fitted onto the movable rod 692 and engages between the push rod 694 and the fixed seat 695. In this embodiment, two movable components are provided, located on opposite sides of the energy storage drive wheel 691. Correspondingly, two first arc-shaped holes 661 and two second arc-shaped holes 141 are provided.

[0039] Therefore, when the shaft 61 rotates, it drives the energy storage drive wheel 691 to rotate, causing the energy storage spring 693 to store energy. When the energy storage spring 693 releases its stored energy, it drives the driven wheel 17 to rotate, thereby closing or opening the main switch 1, that is, causing the moving contact part 1 to contact or separate from the stationary contact part. Specifically, the detailed working process of the energy storage component 69 is as follows:

[0040] The drive wheel 66 rotates along the closing direction of the contact unit (clockwise as an example) with the rotating shaft 61. When one end of the first arc-shaped hole 661 on the drive wheel 66 abuts the push rod 694, as the drive wheel 66 continues to rotate, it drives the energy storage drive wheel 691 to rotate together. This causes the movable rod 692 to be pushed and rotate, moving outward of the energy storage drive wheel 691, and compressing the energy storage spring 693 to achieve energy storage. Figure 4 As shown; next, the drive wheel 66 continues to drive the energy storage drive wheel 691 to rotate a small angle until the movable rod 692 rotates to the position where the energy storage spring 693 releases the stored energy, as shown. Figure 5 As shown; during this process, the push rod 694 slides along the second arc-shaped hole 141 of the driven wheel 14, and the driven wheel 14 remains stationary. When the movable rod 692 rotates to the position that releases the stored energy of the energy storage spring 693, the energy storage spring 693 on the movable rod 692 releases the stored energy, pushing the energy storage drive wheel 691 to rotate rapidly in the direction of the contact unit closing, as shown. Figure 6As shown, the energy storage drive wheel 691 drives the driven wheel 14 to rotate together, thereby achieving the closure of the contact unit. During the process of the energy storage spring 693 releasing the stored energy, the drive wheel 66 will continue to rotate until the contact unit is closed in place. However, the rotation speed of the drive wheel 66 is less than the speed of the energy storage drive wheel 691, and there is a free stroke between the two. Therefore, the rotation of the drive wheel 66 will not affect the rotation of the energy storage drive wheel 691.

[0041] The driving wheel 66 rotates along the direction of the contact unit disconnection with the rotating shaft 61. When the other end of the first arc-shaped hole 661 on the driving wheel 66 abuts the push rod 694, as the driving wheel 66 continues to rotate, the driving wheel 66 drives the energy storage drive wheel 691 to rotate together, thereby pushing the movable rod 692 to rotate and move outward of the energy storage drive wheel 691, and compressing the energy storage spring 693 to achieve energy storage. Then, the driving wheel 66 continues to drive the energy storage drive wheel 691 to rotate a small angle until the movable rod 692 rotates to the position where the energy storage spring 693 releases the stored energy. During this process, the push rod 694 slides along the second arc-shaped hole 141 of the driven wheel 14, and the driven wheel 14 remains stationary. When the movable rod 692 rotates to the position where the energy storage spring 693 releases its stored energy, the energy storage spring 693 on the movable rod 692 releases its stored energy, pushing the energy storage drive wheel 691 to rotate rapidly in the direction of contact unit disconnection. The energy storage drive wheel 691 drives the driven wheel 14 to rotate together, thereby realizing the disconnection of the contact unit.

[0042] like Figure 1 , Figure 2 As shown, the moving contact portion 1 includes a contact support 12 and a moving contact 11. The stationary contact portion includes two stationary contacts 2, which are located on opposite sides of the contact support 12. The moving contact 11 is mounted on the contact support 12 and rotates with the contact support 12, causing both ends of the moving contact 11 to contact or separate from the two stationary contacts 2. The driven wheel 14 is mounted on the contact support 12. In this embodiment, the moving contact portion 1 has two moving contacts 11, which are arranged side by side along the rotation axis of the contact support 12, with a gap between them. At least one moving contact 11 is provided with a contact spring 13 between it and the contact support 12. The contact spring 13 is used to cause the two moving contacts 11 to clamp the two stationary contacts 2 when the contact unit is closed.

[0043] In this embodiment, the arc extinguishing structure includes arc extinguishing chambers 3 respectively provided at the parts where each stationary contact 2 contacts the moving contact 11, and the arc extinguishing chambers 3 are provided with permanent magnets and / or arc extinguishing grids.

[0044] This utility model also includes an auxiliary switch 8 for indicating the open / closed state of the contact unit. The auxiliary switch 8 is linked to the moving contact portion 1, or the auxiliary switch 8 is driven by a drive mechanism 6 to achieve closure or opening. In this embodiment, the auxiliary switch 8 is triggered to close or open by a rotatably mounted drive rod 9. The drive rod 9 is driven to rotate when the moving contact portion 1 rotates in the opening direction, and the drive rod 9 is reset by a reset element to release the auxiliary switch 8. Specifically, as shown... Figure 7 As shown, the auxiliary switch 8 is a micro switch, which is triggered by the drive rod 9 to close. The drive rod 9 is driven to rotate when the moving contact 11 rotates in the disconnection direction. The reset element includes the elastic element 10, but is not limited to it. When the moving contact 11 rotates in the closing direction, the drive rod 30 is released, and the drive rod 9 is reset under the elastic force of the elastic element 10, thereby releasing the auxiliary switch 8 and causing the first auxiliary switch 8 to open. This utility model also includes another auxiliary switch (not shown in the figure) for controlling the running and stopping timing of the motor 62. This other auxiliary switch is electrically connected to the main control board 5 and is driven by the driven wheel 14, which is a cam structure. This utility model also includes a housing 5, and the contact unit and drive mechanism 6 are disposed in the housing 5. In order to achieve stable installation, a support frame 7 is provided in the housing 5, which serves as the mounting carrier for the contact unit and / or drive mechanism 6. One end of the rotating shaft 61 is provided with a first operating part, and the housing 5 is provided with a first clearance hole 51 corresponding to the first operating part; the control element 68 is provided with a second operating part, and the housing 5 is provided with a second clearance hole 52 corresponding to the second operating part. Specifically, such as Figure 8 As shown, the first operating part of the rotating shaft 61 is an operating hole 611, but it is not limited to this. The operating hole 611 is located inside the housing 5 and corresponds to the first clearance hole 51, which is a round hole. Thus, when the operator performs manual operation, a rotating tool (such as a screwdriver) can be inserted into the operating hole 611 of the rotating shaft 61 through the first clearance hole 51, thereby driving the rotating shaft 61 to rotate. In other embodiments, the first operating part is a knob or handle, which extends outside the housing 5. The second operating part of the control member 68 is an operating lever 681, which passes through the second clearance hole 52. The second clearance hole 52 is a straight elongated hole to facilitate the sliding of the operating lever 681.

[0045] This utility model discloses an electric disconnect switch, which uses a motor 62 as the power source to drive the moving contact part 1 to rotate. The large stroke characteristic of the motor 62 can achieve the large operating stroke requirement of the moving contact part 1, thus ensuring that the electrical distance of the contact unit in the open state meets the specified safe isolation distance. The contact unit of this utility model also has an arc-extinguishing function. Therefore, this utility model can be applied to the battery charging and discharging circuit of a battery energy storage system to control the connection or disconnection of the battery charging and discharging circuit. Furthermore, only one electric disconnect switch of this utility model is needed to replace one disconnect switch and two high-voltage DC contactors in a traditional high-voltage box, thereby simplifying the structure and control logic, reducing costs, reducing installation space requirements, and improving work efficiency.

[0046] This utility model discloses an electric disconnect switch. When applied to a battery energy storage system, it is only necessary to connect one contact unit to the main positive branch of the battery charging and discharging circuit and the other contact unit to the main negative branch of the battery charging and discharging circuit. This utility model can also be applied to other circuits with high current carrying capacity that require controlled on / off switching.

[0047] The present invention provides an energy storage system, including a charging and discharging circuit, and also includes an electric disconnecting switch as described above, with the contact unit connected to the charging and discharging circuit.

[0048] Since the electric disconnect switch of this invention includes two synchronously opening and closing contact units, the energy storage system of this invention only needs to use one electric disconnect switch of this invention. Specifically, the charging and discharging circuit includes a main positive branch connected between the positive terminal of the battery and the positive terminal of the power inverter system, and a main negative branch connected between the negative terminal of the battery and the negative terminal of the power inverter system, with one contact unit connected to the main positive branch and the other contact unit connected to the main negative branch. If the electric disconnect switch of this invention includes only one contact unit, then the energy storage system of this invention includes at least two electric disconnect switches of this invention, with one contact unit connected to the main positive branch and the other contact unit connected to the main negative branch.

[0049] For details regarding the structure and working principle of electric disconnect switches, please refer to the previous description; they will not be repeated here.

[0050] The electric disconnect switch and energy storage system of this utility model are identical to or can be implemented using existing technologies for the parts not covered herein.

[0051] The above embodiments are only used to further illustrate an electric disconnect switch and energy storage system of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. An electrically operated disconnect switch, characterized in that: The device includes a contact unit and a drive mechanism. The contact unit includes a moving contact portion and a stationary contact portion that cooperate with each other. The drive mechanism includes a rotating shaft and a motor for providing rotational driving force to the rotating shaft. The rotating shaft rotates in conjunction with the rotation of the moving contact portion, causing the moving contact portion to contact or separate from the stationary contact portion. The contact unit is provided with an arc-extinguishing structure to extinguish the arc generated when the moving contact portion separates from the stationary contact portion. The moving contact portion includes a contact support and a moving contact. The stationary contact portion includes two stationary contacts. The moving contact is disposed on the contact support and rotates together with the contact support, so that the two ends of the moving contact contact or separate from the two stationary contacts respectively.

2. The electrically operated disconnector according to claim 1, characterized in that: The contact unit is configured in multiple ways, and the moving contact parts of the multiple contact units are linked together so that the multiple contact units close or open synchronously.

3. The electrically operated disconnector according to claim 1, characterized in that: The rotating shaft can be driven to rotate manually, and the driving mechanism also includes a control component for controlling whether the circuit containing the motor is turned on or off; the control component includes a control switch connected in series with the motor, which is driven to close or open by a control element, and the control element can be operated.

4. The electrically operated disconnector according to claim 1, characterized in that: The drive mechanism also includes an energy storage component. The rotating shaft stores energy by rotating in conjunction with the energy storage component. The energy storage component releases the stored energy to cause the moving contact part to contact or separate from the stationary contact part.

5. The electrically operated disconnector according to claim 4, characterized in that: The rotating shaft is provided with a driving wheel, and the moving contact part is provided with a driven wheel. The energy storage assembly includes an energy storage drive wheel and at least one movable component. The movable component includes a movable rod, a push rod, and an energy storage spring. The energy storage drive wheel is located between the driving wheel and the driven wheel. The push rod is located on the energy storage drive wheel, and one end of the push rod is adapted to slide into a first arc-shaped hole provided on the driving wheel. The other end of the push rod is adapted to slide into a second arc-shaped hole provided on the driven wheel. The movable rod is rotatably and slidably mounted on a fixed seat located outside the energy storage drive wheel, and one end of the movable rod is movably connected to the push rod. The energy storage spring is sleeved on the movable rod and cooperates between the push rod and the fixed seat.

6. The electrically operated disconnector according to claim 1, characterized in that: The arc-extinguishing structure includes arc-extinguishing chambers respectively provided at the parts where each stationary contact contacts the moving contact, and each arc-extinguishing chamber is provided with a permanent magnet and / or an arc-extinguishing grid.

7. The electrically operated disconnector according to claim 1, characterized in that: It also includes an auxiliary switch for indicating the open or closed state of the contact unit, which is linked to the moving contact portion, or the auxiliary switch is driven by the drive mechanism to achieve closing or opening.

8. The electrically operated disconnector according to claim 7, characterized in that: The auxiliary switch is triggered by a rotating drive rod to close or open. The drive rod is driven to rotate when the moving contact part rotates in the opening direction, and the drive rod is driven to reset by a reset element to release the auxiliary switch. The auxiliary switch is a micro switch.

9. The electrically operated disconnect switch according to claim 3, characterized in that: It also includes a housing, in which the contact unit and the drive mechanism are disposed; one end of the rotating shaft is provided with a first operating part, and the housing is provided with a first clearance hole corresponding to the first operating part; the control component is provided with a second operating part, and the housing is provided with a second clearance hole corresponding to the second operating part.

10. The electrically operated disconnector according to claim 1, characterized in that: The motor is connected to the rotating shaft via a gear transmission assembly. The gear transmission assembly includes a worm, a worm wheel, a first gear, and a second gear. The worm is coaxially connected to the output shaft of the motor. The axis of the worm wheel is parallel to the axis of the rotating shaft and meshes with the worm. The first gear is coaxially connected to the worm wheel, and the second gear is coaxially connected to the rotating shaft and meshes with the first gear.

11. An energy storage system, comprising a charging and discharging circuit, characterized in that: It also includes at least one electrically operated disconnecting switch as claimed in any one of claims 1-8, wherein the contact unit is connected to the charging and discharging circuit.

12. The energy storage system according to claim 11, characterized in that: The contact unit is configured in multiple ways, and the moving contact parts of the multiple contact units are linked together so that the multiple contact units close or open synchronously; the charging and discharging circuit includes a main positive branch and a main negative branch; wherein, of the two contact units, one contact unit is connected to the main positive branch and the other contact unit is connected to the main negative branch.

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