Voltage transformation power switcher with circuit breaker for charging and discharging device

Abstract

A variable-voltage power switcher with circuit breakers for a charging and discharging device is improved power switching equipment of an unequal-voltage charging and discharging switching system designed for the charging and discharging device, a charging circuit breaker and a discharging circuit breaker are integrated in the equipment, and the equipment has three gears of charging, disconnecting and discharging. A direct-current charging and discharging system is formed by the multi-stage energy storage module, at least two groups of equal-voltage energy storage modules, a charging power supply and a power receiving body, and low-voltage charging and high-voltage discharging of the multi-stage energy storage body can be controlled.

Description

Technical Field

[0001] This utility model is a switching device specifically developed for the charging and discharging devices of power energy storage systems. Power energy storage systems operate in a cyclical manner, performing "energy storage-disconnection-discharge-disconnection-energy storage." A switching control device is required. This power switch can combine equal-voltage energy storage modules of multiple energy storage bodies into different series and parallel systems, enabling charging and discharging at different voltage levels. This utility model belongs to the category of automatic power switching devices. Background Technology

[0002] With the vigorous development of new energy power generation, the instability of new energy power is becoming increasingly prominent. Therefore, the importance of power storage is gradually emerging. According to the characteristics of power charging and discharging systems, during charging, the lower the voltage of the energy storage module itself, the higher the operating efficiency, and vice versa; during discharging, the higher the voltage of the energy storage module itself, the higher the operating efficiency, and vice versa. In traditional charging and discharging systems, the voltage of the energy storage module itself is generally the same during charging and discharging, making it difficult to achieve simultaneous high efficiency in both charging and discharging operations. The transformer power switching system of the charging and discharging device, through a multi-stage energy storage design, allows multiple energy storage stages to be connected in parallel during charging and in series during discharging, thereby achieving the goal of low voltage during charging and high voltage during discharging. This system ensures simultaneous high efficiency in charging and discharging. The key equipment for ensuring this system is the transformer power switch of the charging and discharging device. Previously, the applicant applied for a "charge and discharge device transformer power switch." This application integrates the charging circuit breaker and the discharging circuit breaker into the device, expanding the control range of the condition controller to include the operation of the charging circuit breaker and the discharging circuit breaker, making its functions more powerful. This device has not yet entered the market, and the corresponding control system has not been developed. Summary of the Invention

[0003] The inventor has designed a new transformer power switch with a circuit breaker for a charging and discharging device, the main features of which are:

[0004] The condition controller is located on the outside of the chassis, the switching actuator and insulating circuit board are located inside the chassis, and the wiring terminals are located on the edge of the chassis, all with an insulating cover. The charging terminals can be connected to the positive and negative terminals of the charging power supply; the discharging terminals can be connected to the positive and negative terminals of the receiving element; and the energy storage terminals can be connected to the positive and negative terminals of the energy storage element. The charging circuit breaker and discharging circuit breaker are located in the auxiliary protection box outside the chassis, and their opening and closing are controlled by the respective condition controllers.

[0005] When the condition control switch is switched to charging, the switching actuator switches to the parallel state of the equal-voltage energy storage modules, and the multi-stage energy storage body has a low operating voltage, forming a low-voltage charging body; when the condition control switch is switched to discharging, the switching actuator switches to the series state of the equal-voltage energy storage modules, and the multi-stage energy storage body has a high operating voltage, forming a high-voltage discharging body; when the switching control switch is switched to disconnect, both charging and discharging operations are terminated.

[0006] For high-voltage systems, when switching actuators, the corresponding circuit breaker must be disconnected in advance and then closed again after switching to ensure that no high-voltage arc is generated at the switching contacts.

[0007] The technical solution of this utility model is as follows:

[0008] A transformer power switch with a circuit breaker for charging and discharging devices comprises a condition controller, a charging circuit breaker, a discharging circuit breaker, a switching actuator, an insulating wire board, terminal blocks, and a chassis. Its features are: the condition controller is located outside the chassis; the charging circuit breaker, discharging circuit breaker, switching actuator, and insulating wire board are located inside the chassis; the terminal blocks are located at the edge of the chassis, and an insulating cover is provided; when the chassis is a door-type design, the terminal blocks are located inside the chassis without an insulating cover; cable entry / exit points are located on one or both sides of the chassis; the condition controller is allowed to be located inside the chassis; when the charging and discharging circuit breakers are located outside the chassis, they must be installed in a secondary protection box.

[0009] The present invention is further characterized in that the detection condition parameters of the condition controller are 1 to 7 of the following 8 indicators: time, temperature, illuminance, wind speed, voltage, current, power, and energy storage.

[0010] The present invention is further characterized in that: the conductor of the insulating wire board may be a strip copper plate, a strip aluminum plate, a single-core copper wire, a multi-core copper wire, or other conductors.

[0011] The present invention is further characterized in that: the terminal block includes at least two pairs of positive and negative terminals for energy storage; at least one pair of positive and negative terminals for charging; and at least one pair of positive and negative terminals for discharging.

[0012] The present invention is further characterized in that: the switching actuator is composed of an active contact fixing member and a passive contact fixing member; the active contact fixing member is provided with at least two pairs of positive and negative clutch contacts of the energy storage body, which are connected to the corresponding positive and negative terminals of the energy storage body through an insulating wire plate; the passive contact fixing member is provided with positive and negative clutch contacts for charging and discharging, which are connected to the corresponding positive and negative terminals for charging and discharging through an insulating wire plate, a charging circuit breaker, and a discharging circuit breaker; the interchangeability of the contact settings of the active contact fixing member and the passive contact fixing member is also within the scope of the claims.

[0013] The present invention is further characterized in that: the charging circuit breaker may be one of the three types: mechanical DC circuit breaker, solid-state DC circuit breaker, and hybrid DC circuit breaker; the discharging circuit breaker may be one of the three types: mechanical DC circuit breaker, solid-state DC circuit breaker, and hybrid DC circuit breaker.

[0014] The present invention is further characterized in that: the structure of the device having no charging circuit breaker and only a discharging circuit breaker is within the scope of protection of this patent; the structure of the device having no discharging circuit breaker and only a charging circuit breaker is within the scope of protection of this patent.

[0015] The present invention is further characterized in that: the switching actuator is set with three positions: charging, disconnection and discharging, and the corresponding condition controller has three control objectives.

[0016] The present invention is further characterized in that: the active contact fixing component and the passive contact fixing component can be translational synchronous clutch components, rotary synchronous clutch components, synchronous electromagnetic attractors or other contact clutch components with different shapes.

[0017] The present invention is further characterized in that it allows the condition controller to be set to one of three control modes: manual, automatic and manual coexistence, and intelligent switching and manual coexistence.

[0018] The beneficial effects of this utility model are:

[0019] (1) This utility model provides a reliable equipment guarantee for the charging and discharging device of the energy storage system to realize the operation of charging and discharging under unequal voltage.

[0020] (2) The application of this utility model greatly improves the operating efficiency of the energy storage system.

[0021] (3) The present invention adds a charging circuit breaker and a discharging circuit breaker, which makes the product control convenient and improves the degree of automation, thereby simplifying the operation and control of the energy storage system and greatly improving its stability. Attached Figure Description

[0022] Figure 1 This is a diagram of a typical charging and discharging device with a circuit breaker.

[0023] Figure 2 This is a diagram of a transformer power switch with a circuit breaker and three equal-voltage energy storage module interface charging and discharging devices.

[0024] Figure 3 This is a diagram of a transformer power switch with two equal-voltage energy storage module interface charging and discharging devices, and only a discharge circuit breaker.

[0025] In the picture:

[0026] 1. Condition controller 2. Main unit chassis

[0027] 3. Active contact fixing component

[0028] 3.10, Energy storage negative contact ①; 3.11, Energy storage positive contact ①

[0029] 3.20, Energy storage negative contact No. ②; 3.21, Energy storage positive contact No. ②

[0030] 3.30, ③ Energy storage negative contact; 3.31, ③ Energy storage positive contact.

[0031] 4. Passive contact fixing component

[0032] 4.11, Energy storage charging contact ①; 4.12, Energy storage discharging contact ①

[0033] 4.13, Energy Storage and Contact Point No. ①

[0034] 4.21, Energy storage charging contact No. ②; 4.22, Energy storage discharging contact No. ②

[0035] 4.23, No. 2 energy storage and contact point

[0036] 4.31, Energy storage charging contact No. ③ 4.32, Energy storage discharging contact No. ③

[0037] 4.33, No. ③ energy storage and contact point

[0038] 5. Insulating cover for charging terminals

[0039] 5.1 Positive terminal of charging connector 5.2 Negative terminal of charging connector

[0040] 6. Insulating box cover for discharge terminals

[0041] 6.1 Positive terminal of discharge connection 6.2 Negative terminal of discharge connection

[0042] 7. Energy storage body wiring insulation box cover

[0043] 1.1, Positive terminal of energy storage terminal ①; 1.0, Negative terminal of energy storage terminal ①

[0044] 2.1, ② Positive terminal of energy storage terminal; 2.0, ② Negative terminal of energy storage terminal.

[0045] 3.1, Positive terminal of energy storage terminal ③; 3.0, Negative terminal of energy storage terminal ③.

[0046] 8. Discharge insulating board

[0047] 9. Positive electrode insulating strip; 10. Negative electrode insulating strip

[0048] 11. Charging circuit breaker; 12. Discharging circuit breaker

[0049] 13. Charging circuit breaker auxiliary protection box; 13. Discharge circuit breaker auxiliary protection box Detailed Implementation

[0050] The main components of a transformer power switch with a circuit breaker for charging and discharging are as follows:

[0051] Main unit chassis. The main unit chassis is the carrier for housing and fixing various electrical components. Main unit chassis are divided into two types: closed chassis and open chassis.

[0052] Charging terminals. There are two types of charging terminals: positive and negative. The positive terminal can have one or more connectors; the negative terminal can also have one or more connectors. When the main unit is enclosed, the positive and negative terminals are located on the outside of the main unit, with an insulating cover. When the main unit has a door, the charging terminals can be located inside the main unit and an insulating cover is not required. The charging terminals are fixed to the main unit but insulated from it.

[0053] Discharge and wiring terminals. Discharge terminals come in two types: positive and negative. The positive terminal can have one or more terminals; the negative terminal can also have one or more terminals. In the case of a closed chassis, the positive and negative terminals are located on the outside of the chassis and are covered with an insulating cover. In the case of a door-type chassis, the discharge terminals can be located inside the chassis and do not require an insulating cover. The discharge terminals are fixed to the chassis but insulated from it.

[0054] Energy storage terminals. Energy storage terminals are ports prepared for connection to the energy storage body, consisting of a positive terminal and a negative terminal, forming a pair. In this equipment, there are at least two pairs of energy storage terminals, but more are not limited. When the main unit is enclosed, the energy storage terminals are located on the outside of the main unit and are covered with an insulating cover. The energy storage terminals are fixed to the main unit but insulated from it. When the main unit has a door, the charging terminals can be located inside the unit without an insulating cover.

[0055] Charging circuit breaker. The charging circuit breaker is fixed on the main unit chassis and connected to the nearest positive terminal of the charging terminal block. The other end is connected to the main bus of the positive insulated charging wire board. When the charging circuit breaker is fixed outside the main unit chassis, it must be located inside the charging circuit breaker auxiliary protection box. The charging circuit breaker auxiliary protection box is connected to the main unit chassis. When the charging circuit breaker is fixed inside the main unit chassis, no charging circuit breaker auxiliary protection box is required.

[0056] Discharge circuit breaker. The discharge circuit breaker is fixed on the main unit chassis and connected to the nearest terminal of the discharge terminal. The other end is connected to the main busbar of the discharge positive insulated wire plate. When the discharge circuit breaker is fixed outside the main unit chassis, it must be located inside the discharge circuit breaker auxiliary protection box. The discharge circuit breaker auxiliary protection box is connected to the main unit chassis. When the discharge circuit breaker is fixed inside the main unit chassis, no discharge circuit breaker auxiliary protection box is required.

[0057] The active and passive contact fixing components are core parts of the switching actuator. They are equipped with a series of contacts and insulated wire plates connected to the contacts. Through the action of the active contact fixing component, two or more energy storage cells are connected in parallel during charging, and two or more energy storage cells are connected in series during discharging. When disconnected, both the charging and discharging circuits are simultaneously disconnected. The active contact fixing component can operate by translation, rotation, electromagnetic attraction, or other irregular movements. The specific connection relationships of each contact are detailed in the specific embodiment.

[0058] Condition Controller. The condition controller establishes a control relationship with the charging circuit breaker, switching actuator, and discharging circuit breaker. Based on the operating principles of high-voltage electricity, to prevent high-voltage arcing and damage to the switching actuator, the condition controller should first instruct the charging and discharging circuit breakers to open. After the switching actuator completes its operation, it then instructs the corresponding circuit breaker to close or all circuit breakers to close. This procedure must be executed for every switching operation.

[0059] The condition controller has three modes: charging operation, shutdown, and discharging operation. The control modes include: manual control, a combination of manual and automatic control, and a combination of manual and intelligent control. The condition controller detects one or more of the following eight parameters: time, temperature, illuminance, wind speed, voltage, current, power, and energy storage capacity. Different control programs are selected for different types of charging and discharging applications and specific scenario requirements.

[0060] The present invention will be further described below with reference to typical embodiments.

[0061] Example 1: A typical charging and discharging device with a circuit breaker-equipped transformer power switch. For example... Figure 1 As shown. The main unit is enclosed, with externally mounted charging, discharging, and energy storage terminals. Both the charging and discharging circuit breakers are external, as is the condition controller. There are two sets of energy storage terminals, allowing connection to two equal-voltage energy storage modules. Figure 1 In the diagram, the dashed arrows indicate the control relationship between the condition controller 1 and the active contact fixing component 3, the charging circuit breaker 11, and the discharging circuit breaker 12. All components are mounted on the main unit housing 2. The switching mechanism operates by translation.

[0062] Energy storage negative contact 3.10, energy storage positive contact 3.11, energy storage negative contact 3.20, and energy storage positive contact 3.21 are fixed on the active contact fixing component 3. Energy storage negative contact 3.10 is connected to the negative terminal 1.0 of energy storage terminal 1 and the negative terminal 6.2 of discharge terminal 1 through the negative insulating wire plate 10; energy storage positive contact 3.11 is connected to the positive terminal 1.1 of energy storage terminal 1 through the positive insulating wire plate 9; energy storage negative contact 3.20 is connected to the negative terminal 2.0 of energy storage terminal 2 through the negative insulating wire plate 10; energy storage positive contact 3.21 is connected to the positive terminal 2.1 of energy storage terminal 2 through the positive insulating wire plate 9.

[0063] Energy storage charging contact 4.11 (①), energy storage discharging contact 4.12 (①), energy storage parallel contact 4.13 (①), energy storage charging contact 4.21 (②), energy storage discharging contact 4.22 (②), and energy storage parallel contact 4.23 (②) are fixed on the passive contact fixing component 4. Energy storage charging contact 4.11 (①) and energy storage charging contact 4.21 (②) are connected to the positive terminal 5.1 of the charging terminal via the positive insulating wire plate 9 and the charging circuit breaker 11. Energy storage parallel contact 4.13 (①) and energy storage parallel contact 4.23 (②) are connected to the negative terminal 5.2 of the charging terminal via the negative insulating wire plate 10. Energy storage discharging contact 4.12 (①) is connected to the negative terminal 2.0 of the energy storage terminal via the discharging insulating wire plate 8. Energy storage discharging contact 4.22 (②) is connected to the positive terminal 6.1 of the discharging terminal via the positive insulating wire plate 9 and the generating circuit breaker 12.

[0064] In the diagram, when the condition controller 1 issues a charging command, the charging circuit breaker 11 and the discharging circuit breaker 12 are disconnected, the active contact fixing member 3 moves to the left, and the first energy storage negative contact 3.10 connects with the first energy storage parallel contact 4.13, and the first energy storage positive contact 3.11 connects with the first energy storage charging contact 4.11; the second energy storage negative contact 3.20 connects with the second energy storage parallel contact 4.23, and the second energy storage positive contact 3.21 connects with the second energy storage charging contact 4.21. At this time, the command charging circuit breaker 11 and the discharging circuit breaker 12 are turned on, and the online charging operation of the first and second isobaric energy storage modules begins.

[0065] In the diagram, when the condition controller 1 issues a discharge command, the charging circuit breaker 11 and the discharging circuit breaker 12 disconnect, the active contact fixing component 3 moves to the right, and the first energy storage positive contact 3.11 connects with the first energy storage discharge contact 4.12; the second energy storage positive contact 3.21 connects with the second energy storage discharge contact 4.22. At this time, the charging circuit breaker 11 and the discharging circuit breaker 12 are instructed to connect, and the discharge operation of the first and second equal-voltage energy storage modules begins. In this case, the discharge voltage of the first and second equal-voltage energy storage modules operating in series is twice that of a single equal-voltage energy storage module.

[0066] In the diagram, when the condition controller 1 issues a disconnect command, the charging circuit breaker 11 and the discharging circuit breaker 12 disconnect, the active contact fixing member 3 and the passive contact fixing member 4 return to their positions, charging stops, and discharging stops.

[0067] Example 2: A transformer power switch with a circuit breaker for charging and discharging devices at the interfaces of three equal-voltage energy storage modules, such as... Figure 2 As shown. The main unit is a closed chassis with external charging terminals, external discharging terminals, and external energy storage terminals. The charging circuit breaker is external, while the discharging circuit breaker is internal. The condition controller is external. There are three sets of energy storage terminals, allowing connection to three equal-voltage energy storage modules. Figure 2 In the diagram, the dashed arrows indicate the control relationship between the condition controller 1 and the active contact fixing component 3, the charging circuit breaker 11, and the discharging circuit breaker 12. All components are mounted on the main unit housing 2. The switching mechanism operates by translation.

[0068] Compared with Example 1, the three equal-pressure energy storage module interface transformer power switching system has an additional pair of energy storage positive and negative terminals on the switching actuator 2, namely: positive terminal 3.1 and negative terminal 3.0 of energy storage terminal ③. The corresponding active contact fixing component 3 is equipped with a negative contact 3.30 and a positive contact 3.31 of energy storage. The corresponding passive contact fixing component 4 is equipped with a charging contact 4.31, a discharging contact 4.32, and a parallel contact 4.33 of energy storage. A discharge insulating wire plate 8 is also added.

[0069] Energy storage negative contact 3.30 is connected to energy storage terminal 3.0 via negative insulating wire plate 10. Energy storage positive contact 3.31 is connected to energy storage terminal 3.1 via positive insulating wire plate 9. Energy storage charging contact 4.31, energy storage charging contact 4.11, and energy storage charging contact 4.21 are connected to charging terminal 5.1 via positive insulating wire plate 9 and charging circuit breaker 11. Energy storage discharging contact 4.32 is connected to discharging terminal 6.1 via positive insulating wire plate 9 and discharging circuit breaker 12. Energy storage contact 4.33 is connected to charging terminal negative contact 5.2 via negative insulating wire plate 10. Among these, energy storage discharging contact 4.22 is connected to energy storage negative contact 3.30 via discharging insulating wire plate 8.

[0070] In the diagram, when the condition controller 1 issues a charging command, the charging circuit breaker 11 and the discharging circuit breaker 12 are disconnected, the active contact fixing member 3 moves to the left, and the first energy storage negative contact 3.10 connects with the first energy storage parallel contact 4.13, and the first energy storage positive contact 3.11 connects with the first energy storage charging contact 4.11; the second energy storage negative contact 3.20 connects with the second energy storage parallel contact 4.23, and the second energy storage positive contact 3.21 connects with the second energy storage charging contact 4.21; the third energy storage terminal negative contact 3.0 connects with the third energy storage parallel contact 4.33, and the third energy storage positive contact 3.31 connects with the third energy storage charging contact 4.31. At this time, the command charging circuit breaker 11 and the discharging circuit breaker 12 are turned on, and the online charging of the first, second, and third equal-pressure energy storage modules begins.

[0071] In the diagram, when the condition controller 1 issues a discharge command, the charging circuit breaker 11 and the discharging circuit breaker 12 are disconnected, the active contact fixing member 3 moves to the right, and the first energy storage positive contact 3.11 and the first energy storage discharge contact 4.12 are connected; the second energy storage positive contact 3.21 and the second energy storage discharge contact 4.22 are connected; and the third energy storage positive contact 3.31 and the third energy storage discharge contact 4.32 are connected. At this time, the charging circuit breaker 11 and the discharging circuit breaker 12 are instructed to close, and the discharge operation of the first, second, and third equal-voltage energy storage modules begins. In this case, the discharge voltage of the first, second, and third equal-voltage energy storage modules operating in series is three times that of a single equal-voltage energy storage module.

[0072] In the diagram, when the condition controller 1 issues a disconnect command, the charging circuit breaker 11 and the discharging circuit breaker 12 disconnect, the active contact fixing member 3 and the passive contact fixing member 4 return to their positions, charging stops, and discharging stops.

[0073] Example 3: A transformer power switch with only a discharge circuit breaker for the charging and discharging devices of two equal-voltage energy storage modules, such as... Figure 2 As shown. The main unit is a door-mounted chassis with built-in charging, discharging, and energy storage terminals. There is no charging circuit breaker; all circuit breakers are external. The condition controller is external. There are two sets of energy storage terminals, allowing connection to two equal-voltage energy storage modules. Figure 3 In the diagram, the dashed arrows indicate the control relationship between the condition controller 1 and the active contact fixing component 3 and the discharge circuit breaker 12. All components are mounted on the main unit housing 2. The switching mechanism operates by translation.

[0074] Compared to Example 1, Example 3 omits one charging circuit breaker. This is suitable for low-voltage charging conditions or special conditions where an arc circuit is already installed at the charging power supply end. The control program omits the operation of the charging circuit breaker. All other aspects are the same as in Example 1.

[0075] The transformer power switch for charging and discharging devices with more equal-pressure energy storage module interfaces is similar to that in Embodiments 1, 2, and 3, and falls within the scope of the claims of this application, so it will not be elaborated here.

[0076] Increasing the number of positive and negative terminals in the charging connection will not change the operating mechanism and principle of the switching actuator, but only increase the charging power, which falls within the scope of the claims of this application and will not be elaborated here.

[0077] Increasing the number of positive and negative terminals of the discharge wiring will not change the operating mechanism and principle of the switching actuator, but only increase the discharge power, which falls within the scope of the claims of this application and will not be elaborated here.

Claims

1. A transformer power switch with a circuit breaker for charging and discharging devices, comprising a condition controller, a charging circuit breaker, a discharging circuit breaker, a switching actuator, an insulating wire plate, terminal blocks, and a chassis, characterized in that: The condition controller is located on the outside of the chassis, while the charging circuit breaker, discharging circuit breaker, switching actuator and insulating wire plate are located inside the chassis, and the wiring terminals are located on the edge of the chassis, with an insulating box cover attached. When the chassis is a door-type design, the wiring terminals are located inside the chassis without an insulating cover. Cable entry and exit points are located on one or both sides of the chassis. Condition controllers are allowed to be installed inside the chassis. When charging circuit breakers and discharging circuit breakers are installed outside the chassis, they must be installed in the secondary protection box.

2. The transformer power switch with circuit breaker in the charging and discharging device according to claim 1, characterized in that: The detection conditions of the condition controller are 1 to 7 of the following 8 indicators: time, temperature, illuminance, wind speed, voltage, current, power, and energy storage.

3. The transformer power switch with circuit breaker in the charging and discharging device according to claim 1, characterized in that: The conductor of the insulated wire board may be a strip of copper plate, a strip of aluminum plate, a single-core copper wire, or a multi-core copper wire.

4. The transformer power switch with circuit breaker in the charging and discharging device according to claim 1, characterized in that: The terminal block includes at least two pairs of positive and negative terminals for the energy storage body; at least one pair of positive and negative terminals for charging; and at least one pair of positive and negative terminals for discharging.

5. The transformer power switch with circuit breaker in the charging and discharging device according to claim 1, characterized in that: The switching actuator consists of an active contact fixing component and a passive contact fixing component. The active contact fixing component is provided with at least two pairs of positive and negative clutch contacts for the energy storage body, which are connected to the corresponding positive and negative terminals of the energy storage body through an insulating wire plate. The passive contact fixing component is provided with positive and negative clutch contacts for charging and discharging, which are connected to the corresponding positive and negative terminals for charging and discharging through an insulating wire plate, a charging circuit breaker, and a discharging circuit breaker. The contact settings of the active contact fixing component and the passive contact fixing component can be interchanged.

6. The transformer power switch with circuit breaker in the charging and discharging device according to claim 5, characterized in that: charging... The circuit breaker may be one of the following: mechanical DC circuit breaker, solid-state DC circuit breaker, or hybrid DC circuit breaker; the discharge circuit breaker may be one of the following: mechanical DC circuit breaker, solid-state DC circuit breaker, or hybrid DC circuit breaker.

7. The transformer power switch with circuit breaker in the charging and discharging device according to claim 1, characterized in that: The equipment may be constructed without a charging circuit breaker, but only with a discharging circuit breaker; or the equipment may be constructed without a discharging circuit breaker, but only with a charging circuit breaker.

8. The transformer power switch with circuit breaker in the charging and discharging device according to claim 1, characterized in that: The actuator can be switched to three positions: charging, disconnecting, and discharging. The corresponding condition controller has three control objectives.

9. The transformer power switch with circuit breaker in the charging and discharging device according to claim 5, characterized in that: The active contact fixing parts and passive contact fixing parts can be translational synchronous clutches, rotary synchronous clutches, synchronous electromagnetic chucks, and solid circuit breaker clutches with different shapes.

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