Method and device for controlling energy storage unit of dual power transfer switching device

Abstract

In accordance with an embodiment of the present disclosure, a method and apparatus for controlling an energy storage unit of a dual power transfer switch device are provided. The method comprises the following steps: on the basis of power supply states of a main power supply and a standby power supply which are connected to the dual-power-supply change-over switch equipment, a power selection circuit of the dual-power-supply change-over switch equipment selects a working power supply used for supplying power to the energy storage unit or a change-over unit of the dual-power-supply change-over switch equipment from the main power supply and the standby power supply, and the change-over unit can be switched between opening and closing. The energy storage unit can assist the conversion process of the conversion unit; in response to the fact that the energy stored by the energy storage unit is consumed in the conversion process of the conversion unit, the energy storage unit is powered by the selected working power source, and therefore energy storage is conducted on the energy storage unit; and in response to the completion of the energy storage process of the energy storage unit, enabling the energy storage unit to release the power selection circuit.

Description

Technical Field

[0001] Example embodiments of the present disclosure generally relate to the field of electrical devices, and more particularly, to a method and apparatus for controlling an energy storage unit of a dual power conversion switch device, a dual power conversion switch device, and a computer-readable storage medium. Background Art

[0002] A dual-source transfer switchgear (ATS) is used to switch loads from one power source to another. ATS devices are generally classified into two types: integrated (PC-class) and dual-circuit-breaker (CB-class). Conventional PC-class ATS devices typically utilize only an excitation coil to switch power sources. Conventional CB-class ATS devices typically integrate an energy storage motor within each circuit breaker to assist in power switching.

[0003] In CB-class ATS equipment, whether the energy storage motor in the circuit breaker performs energy storage is passively determined by the main circuit to which the circuit breaker is connected. As long as the main circuit is energized, the energy storage motor can store energy. However, since parameters such as the voltage and frequency to which the energy storage motor is subjected during energy storage cannot be customized, there is a risk of damage to the motor if these parameters exceed the rated range.

[0004] In PC-level ATS equipment, energy storage mechanisms can also be used to assist with power switching. For example, the energy storage mechanism and the conversion structure can reuse the same power supply circuit. However, because the energy storage mechanism cannot properly release the power supply circuit to the conversion mechanism, the energy storage and conversion processes may conflict, posing the risk of both energy storage and conversion processes failing.

[0005] Furthermore, since the rated supply voltages of the two power supplies may differ, and the energy storage motors also come in different models, different specifications of energy storage motors may be required during use. This increases the difficulty of production and management, resulting in increased design and production costs, and also makes model selection difficult for users. Furthermore, since the energy storage motor is directly connected to the AC terminal, excessively high input voltage can damage the motor, affecting product reliability. Summary of the Invention

[0006] Embodiments of the present disclosure provide a method and apparatus for controlling an energy storage unit of a dual power conversion switch device, a dual power conversion switch device, and a computer-readable storage medium.

[0007] In a first aspect of the present disclosure, a method for controlling an energy storage unit of a dual-power conversion switch device is provided. The method includes: based on the power states of a main power supply and a backup power supply connected to the dual-power conversion switch device, causing a power selection circuit of the dual-power conversion switch device to select a working power supply from the main power supply and the backup power supply for powering the energy storage unit or a conversion unit of the dual-power conversion switch device, where the conversion unit is capable of switching between opening and closing, and the energy storage unit is capable of assisting the switching process of the conversion unit; in response to the energy stored in the energy storage unit being consumed during the switching process of the conversion unit, causing the energy storage unit to be powered by the selected working power supply, thereby storing energy in the energy storage unit; and in response to the energy storage process of the energy storage unit being completed, causing the energy storage unit to release the power selection circuit.

[0008] In a second aspect of the present disclosure, a device for controlling an energy storage unit of a dual-power conversion switch device is provided. The device includes: at least one processing unit; and at least one memory, where the at least one memory is coupled to the at least one processing unit and stores instructions for being executed by the at least one processing unit, and when the instructions are executed by the at least one processing unit, the device is caused to execute the method of the first aspect of the present disclosure.

[0009] In a third aspect of the present disclosure, a dual-power conversion switch device is provided, including: a conversion unit capable of switching between opening and closing; an energy storage unit capable of assisting the switching process of the conversion unit; a power selection circuit capable of selecting a working power supply from the main power supply and the backup power supply for powering the conversion unit and the energy storage unit; and the device of the second aspect of the present disclosure for controlling the energy storage unit.

[0010] In a fourth aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program can be executed by a processor to implement the method of the first aspect of the present disclosure.

[0011] As will be understood from the following description, according to embodiments of the present disclosure, it is possible to select a working power supply from two power supplies based on electrical parameters, rather than directly connecting the energy storage unit to the main circuit, thereby improving the safety of the device. In addition, according to embodiments of the present disclosure, it is possible to control the execution of the energy storage process based on the execution of the conversion process, preventing conflicts between the energy storage and conversion processes. In addition, according to embodiments of the present disclosure, it is possible to use the same specification of energy storage motor when the two power supplies provide different rated voltages, reducing the difficulty of production and management, design and manufacturing costs, and the difficulty of motor selection for users. In addition, according to embodiments of the present disclosure, it is possible to avoid the energy storage unit from bearing too high a voltage and prevent damage to the energy storage motor. In addition, according to embodiments of the present disclosure, it is possible to notify the user in a timely manner when an abnormality occurs during the energy storage process for corresponding maintenance operations. Other benefits will be described in conjunction with the corresponding embodiments below.

[0012] It should be understood that the content described in this section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In conjunction with the accompanying drawings and with reference to the following detailed description, the above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent. In the drawings, the same or similar reference numerals denote the same or similar elements, where:

[0014] Figure 1 shows a schematic structural block diagram of a conventional dual-power transfer switch device;

[0015] Figure 2 shows a schematic structural block diagram of a dual-power transfer switch device according to some embodiments of the present disclosure;

[0016] Figure 3 shows a flowchart of a process for controlling an energy storage unit of a dual-power transfer switch device according to some embodiments of the present disclosure;

[0017] Figure 4 shows a flowchart of a power supply selection process according to some embodiments of the present disclosure;

[0018] Figure 5 shows a flowchart of an energy storage motor control process according to some embodiments of the present disclosure;

[0019] Figure 6 shows a schematic structural block diagram of a power supply voltage control mechanism for an energy storage unit according to some embodiments of the present disclosure; and

[0020] Figure 7A block diagram of a device capable of implementing various embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present disclosure in more detail with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0022] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0023] As briefly mentioned above, in CB-class ATS equipment, whether the energy storage motor in the circuit breaker performs the energy storage process is passively determined by the main circuit to which the circuit breaker is connected. Figure 1 FIG. 1 shows a portion of a conventional CB-class ATS device. Figure 1 As shown, the energy storage mechanism 121 in the circuit breaker 12 is directly connected to the main circuit 11. When the main circuit 11 is powered, the energy storage motor in the energy storage mechanism 121 can store energy to assist in the opening and closing processes of the conversion mechanism 122. However, because the energy storage mechanism 121 is directly connected to the main circuit 11, it is impossible to control the voltage, frequency, and other parameters that the energy storage motor experiences during energy storage. If these parameters exceed the nominal range of the motor, there is a risk of damage to the motor.

[0024] Furthermore, in PC-level ATS equipment, energy storage mechanisms can also be used to assist with power switching. For example, the energy storage mechanism and the conversion structure can reuse the same power supply circuit. However, because the energy storage mechanism cannot properly release the power supply circuit to the conversion mechanism, the energy storage and conversion processes may conflict, posing the risk of both failing.

[0025] The objective of the present disclosure is to provide a solution for controlling the energy storage unit of a dual-power conversion switch device. In this solution, the working power supply is selected from two power supplies based on electrical parameters, rather than directly connecting the energy storage unit to the main circuit, so as to improve the safety of the device. And in this solution, the execution of the energy storage process is controlled based on the execution of the conversion process, so as to prevent conflicts between the energy storage and conversion processes. The principle of the present disclosure will be described in detail below in conjunction with Figures 2 to 7 to carry out a detailed description.

[0026] Figure 2 Fig. 6 shows a schematic structural block diagram of a dual-power conversion switch device 20 according to some embodiments of the present disclosure. As Figure 2 shown, the dual-power conversion switch device 20 described herein generally includes a power selection circuit 21, an energy storage unit 22, a conversion unit 23, and a processing unit 25.

[0027] The power selection circuit 21 can be connected to both the energy storage unit 22 and the conversion unit 23 through relays 241 and 242, for selecting a power supply for powering the conversion unit 23 and the energy storage unit 22 from a main power supply and a backup power supply under the control of the processing unit 25. In one embodiment, the processing unit 25 can be a microcontroller unit (MCU).

[0028] The energy storage unit 22 is capable of performing an energy storage process, and the stored energy can assist the conversion unit 23 in switching between opening and closing. The energy storage unit 22 can adopt various known or future available structures, and the embodiments of the present disclosure do not limit this. As an example, as Figure 2 shown, the energy storage unit 22 can include an energy storage motor 221 and an energy storage actuator 222. The energy storage motor 221 can be connected to the power selection circuit 21 through the relay 241, and can store energy in the energy storage actuator 222 when powered on. When the conversion unit 23 needs to perform a conversion, especially an opening operation, the energy storage actuator 222 can release the stored energy, thereby assisting the conversion unit 23 to complete the conversion process.

[0029] The conversion unit 23 is capable of performing a conversion process including opening and closing. Specifically, the conversion unit 23 can open from a first closed position for connecting the main power supply or a second closed position for connecting the backup power supply to an intermediate position, and close from the intermediate position to the first closed position or the second closed position. The main power supply and the backup power supply can be various types of power supplies. As an example, the main power supply can be the mains electricity, and the backup power supply can be a generator. The conversion unit 23 can adopt various known or future available structures, and the embodiments of the present disclosure do not limit this. As an example, as Figure 2As shown, the conversion unit 23 may include a conversion circuit 231 and a conversion actuator 232. The conversion circuit 231 may be connected to the power selection circuit 21 via a relay 242, and the conversion actuator 232 may be opened or closed under the control of the processing unit 25. Because the conversion unit 23 needs to overcome a large force during conversion, especially when opening, an energy storage unit 22 is provided to assist in opening the conversion unit 23.

[0030] By setting the energy storage unit 22 downstream of the power selection circuit 21, the energy storage unit 22 does not store energy when the conversion unit 23 performs the conversion process. This can reduce the stress on the front-end components of the dual power conversion switch device 20 and the impact on the power supply, save costs, and improve the service life and safety of the energy storage motor 221.

[0031] Since the dual power conversion switch device 20 uses a single power selection circuit 21 to power the energy storage unit 22 and the conversion unit 23, it is necessary to consider how to avoid conflicts between the energy storage and conversion processes. To this end, an embodiment of the present disclosure provides a process 300 for controlling the energy storage unit 22 of the dual power conversion switch device 20, such as Figure 3 As shown. Process 300 can be performed by Figure 2 The processing unit 25 in the following will be executed. Figure 2 The process 300 is described with reference to the dual power transfer switch device 20 shown.

[0032] like Figure 3 As shown, at block 310, the processing unit 25 causes the power selection circuit 21 to select an operating power source from the main power source and the backup power source connected to the dual power conversion switch device 20 to supply power to the energy storage unit 22 or the conversion unit 23. The processing unit 25 can determine whether the two power sources are valid or normal based on the electrical parameters of the two power sources, thereby determining whether the two power sources can be used. To obtain the electrical parameters, a monitoring unit can be provided in the dual power conversion switch device 20 to monitor the operating status of the power sources. The monitoring unit can monitor electrical parameters of the main power source and the backup power source, such as voltage and frequency.

[0033] Figure 4 A flow chart of a power supply selection process 400 according to some embodiments of the present disclosure is shown. Power supply selection process 400 can select an operating power supply based on the priorities of the primary and backup power supplies. For example, the primary power supply may have a higher priority than the backup power supply. In this case, if both the primary and backup power supplies are normal or both are abnormal, the primary power supply is selected. The backup power supply is selected only if the primary power supply is abnormal and the backup power supply is normal.

[0034] like Figure 4As shown, at block 410, processing unit 25 may receive electrical parameters obtained by the monitoring unit. At block 420, processing unit 25 may determine whether the main power supply is in a normal state based on the electrical parameters of the main power supply. If it is determined at block 420 that the main power supply is in a normal state, process 400 may proceed to block 430. If it is determined at block 420 that the main power supply is not in a normal state (i.e., it is in an abnormal state), process 400 may proceed to block 440. At block 430, in response to the main power supply being in a normal state, processing unit 25 may generate a first selection signal to cause power selection circuit 21 to select the main power supply as the operating power supply according to the first selection signal. At block 440, in response to the main power supply being in an abnormal state, processing unit 25 may determine whether the backup power supply is in a normal state based on the electrical parameters of the backup power supply. If it is determined at block 440 that the backup power supply is in a normal state, process 400 may proceed to block 450. If it is determined at block 440 that the backup power supply is not in a normal state (i.e., it is in an abnormal state), process 400 may proceed to block 460. At block 450, in response to the backup power supply being in a normal state, the processing unit 450 may generate a second selection signal to cause the power selection circuit 21 to select the backup power supply as the operating power supply according to the second selection signal. At block 460, in response to the backup power supply being in an abnormal state, the processing unit 450 may generate a first selection signal to cause the power selection circuit 21 to select the main power supply as the operating power supply according to the first selection signal.

[0035] In some embodiments, whether the main power supply and backup power supply are in a normal state can be determined based on their voltages. For example, when the voltages of the main power supply and backup power supply are within a rated threshold range, the main power supply and backup power supply can be considered to be in a normal state. Conversely, when the voltages of the main power supply and backup power supply are outside the rated threshold range, the main power supply and backup power supply can be considered to be in an abnormal state. Similarly, whether the main power supply and backup power supply are in a normal state can also be determined based on their frequencies, which will not be further described here.

[0036] In some embodiments, when determining whether the main power supply and the backup power supply are in a normal state based on the electrical parameters of the main power supply and the backup power supply, hysteresis can be set for the electrical parameters to overcome disturbances caused by noise.

[0037] return Figure 3 At block 320, in response to the energy stored in the energy storage unit 22 being consumed during the conversion process of the conversion unit 23, the processing unit 25 causes the energy storage unit 22 to occupy the power selection circuit 21 so as to be powered by the selected working power supply, thereby storing energy in the energy storage unit 22. For example, the processing unit 25 may cause the energy storage unit 22 to occupy the power selection circuit 21 by controlling the relay 241 to close and the relay 242 to open.

[0038] At block 330, in response to the completion of the energy storage process of the energy storage unit 22, the processing unit 25 may cause the energy storage unit 22 to release the selected power circuit 21. For example, the processing unit 25 may control the relay 241 to open to cause the energy storage unit 22 to release the selected power circuit 21.

[0039] Figure 5 The flowchart of the energy storage motor control process 500 according to some embodiments of the present disclosure is shown. In one embodiment, as Figure 5 shown, the energy storage motor 221 may be switched between an idle state 510, an energy storage state 520, a release state 530, a standby state 540, and an error state 550 under the control of the processing unit 25. In the embodiments of the present disclosure, the switching process between the above states may also be referred to as the state switching process of the energy storage unit 22. For example, it may be referred to as the energy storage unit 22 switching between the idle state 510, the energy storage state 520, the release state 530, the standby state 540, and the error state 550. The idle state 510 indicates that the energy storage motor 221 is in an idle state where the energy storage process is not performed. The energy storage state 520 indicates the state where the energy storage motor 221 occupies the selected power circuit 21 to perform the energy storage process. The release state 530 indicates the state where the energy storage motor 221 releases the selected power circuit 21 to end the energy storage process. The standby state 540 indicates the state where the energy storage motor 221 pauses the energy storage process. The error state 550 indicates the state where an error or abnormality occurs in the energy storage process.

[0040] In one embodiment, as Figure 5 shown, at arrow 511, in the case where the energy stored in the energy storage unit 22 is consumed during the conversion process of the conversion unit 23, the energy storage motor 221 may be switched from the idle state 510 to the energy storage state 520 under the control of the processing unit 25. In other words, the processing unit 25 may cause the energy storage unit 22 to occupy the selected power circuit 21 to be powered by the selected working power supply, so as to store energy in the energy storage unit 22.

[0041] In one embodiment, as Figure 5 shown, at arrow 512, in the case where the energy storage process of the energy storage unit 22 is completed, the energy storage motor 221 may be switched from the energy storage state 520 to the release state 530 under the control of the processing unit 25. In other words, the processing unit 25 may cause the energy storage unit 22 to release the selected power circuit 21 to end the energy storage process.

[0042] In one embodiment, as Figure 5As shown, at arrow 513, during the energy storage process of the energy storage unit 22, if both the main power supply and the backup power supply are in an abnormal state, the energy storage motor 221 can be switched from the energy storage state 520 to the standby state 540 under the control of the processing unit 25. In other words, the processing unit 25 can cause the energy storage unit 22 to enter the motor standby state 540 to suspend the energy storage process. In this way, the energy storage unit 22 can be protected from excessive voltage, preventing damage to the energy storage motor 221.

[0043] In one embodiment, Figure 5 As shown, at arrow 514, when the energy storage unit 22 is in the standby state 540, if at least one of the main power supply and the backup power supply returns to normal, the energy storage motor 221 can be switched from the standby state 540 to the energy storage state 520 under the control of the processing unit 25. In this way, the processing unit 25 can enable the energy storage unit 22 to resume execution of the energy storage process.

[0044] In one embodiment, Figure 5 As shown, at arrow 515, when the energy storage unit 22 is in the standby state, if the processing unit 25 receives a switching command for the conversion unit 23, the energy storage motor 221 can be switched from the standby state 540 to the released state 530 under the control of the processing unit 25. In this way, the processing unit 25 can cause the energy storage unit 22 to release the power selection circuit 21 and cause the conversion unit 23 to occupy the power selection circuit 21 to be powered by the selected working power supply, thereby executing the conversion process of the conversion unit 23.

[0045] In one embodiment, Figure 5 As shown, at arrow 516, if an error occurs during the energy storage process of the energy storage unit 22, the energy storage motor 221 may switch from the energy storage state 520 to the error state 550 under the control of the processing unit 25. In this case, the processing unit 25 may generate an indication signal indicating that the energy storage unit 22 is in the error state 550, so as to notify the user to perform maintenance.

[0046] In one embodiment, Figure 5 As shown, at arrow 517, if the energy storage process error of the energy storage unit 22 is restored, the energy storage motor 221 can be switched from the error state 550 to the energy storage state 520 under the control of the processing unit 25. In this case, the processing unit 25 can enable the energy storage unit 22 to restore the energy storage process.

[0047] In one embodiment, Figure 5 As shown, at arrow 518 , if the energy storage process error of the energy storage unit 22 is recovered, the energy storage motor 221 can be switched from the error state 550 to the idle state 510 under the control of the processing unit 25 to restart the energy storage process under appropriate conditions.

[0048] In one embodiment, as Figure 5 shown, at arrow 519, when the energy storage unit 22 is in the idle state 510, if the processing unit 25 receives a conversion command for the conversion unit 23, the energy storage motor 221 can switch from the idle state 510 to the release state 530 under the control of the processing unit 25. In this case, the processing unit 25 can cause the conversion unit 23 to occupy the power selection circuit 21 to be powered by the selected working power supply, so as to execute the conversion process of the conversion unit 23.

[0049] In some embodiments, during the energy storage process of the energy storage unit 22, if the processing unit 25 receives a conversion command for the conversion unit 23, the energy storage motor 221 can switch from the energy storage state 520 to the release state 530 under the control of the processing unit 25. In this way, the processing unit 25 can cause the energy storage unit 22 to release the power selection circuit 21 and cause the conversion unit 23 to occupy the power selection circuit 21 to be powered by the selected working power supply, so as to execute the conversion process of the conversion unit 23.

[0050] In one embodiment, as Figure 5 shown, at arrow 521, if the conversion process of the conversion unit 23 is completed, the processing unit 25 can cause the conversion unit 23 to release the power selection circuit 21 and cause the energy storage unit 22 to occupy the power selection circuit 21 to be powered by the selected working power supply, so as to resume the energy storage process.

[0051] In one embodiment, as Figure 5 shown, at arrow 522, when the selected working power supply is abnormal and another power supply is normal, the processing unit 25 can cause the power selection circuit 21 to select another power supply to supply power to the energy storage process.

[0052] According to the embodiments of the present disclosure, it is possible to select a working power supply from two power supplies based on electrical parameters, rather than directly connecting the energy storage unit to the main circuit, so that the safety of the device can be improved. In addition, according to the embodiments of the present disclosure, it is possible to control the execution of the energy storage process based on the execution of the conversion process, preventing conflicts between the energy storage and conversion processes. In addition, according to the embodiments of the present disclosure, it is possible to avoid the energy storage unit from bearing too high a voltage and prevent damage to the energy storage motor. In addition, according to the embodiments of the present disclosure, it is possible to notify the user in a timely manner when an abnormality occurs in the energy storage process, so as to perform corresponding maintenance operations.

[0053] As mentioned above, since the rated supply voltages of the two power supplies may be different, and the energy storage motors also have different product models, energy storage motors of different specifications may need to be used during use due to the different voltages of the two power supplies. On the one hand, this increases the difficulty of production and management, resulting in increased design costs and production costs, and on the other hand, it also brings difficulties to users in model selection. In addition, since the energy storage motor is directly connected to the AC end, excessively high input voltage will cause damage to the energy storage motor, affecting the reliability of the product. In order to solve the above problems, an embodiment of the present disclosure provides a power supply voltage control mechanism for an energy storage unit, so as to provide a predetermined voltage level to the energy storage motor 221 in different ways according to the size of the working voltage selected by the power selection circuit 21, such as Figure 6 shown.

[0054] In some embodiments, as Figure 6 As shown, the dual power conversion switch device 20 further includes a switching circuit 26. The switching circuit 26 is connected between the power selection circuit 21 and the energy storage unit 22. When the voltage of the working power selected by the power selection circuit 21 is lower than a predetermined threshold, the switching circuit 26 can, under the control of the processing unit 26, use the selected working power to directly power the energy storage unit 22. When the voltage of the working power selected by the power selection circuit 21 is higher than a predetermined threshold, the switching circuit 26 can, under the control of the processing unit 26, reduce the voltage of the selected working power to below the predetermined threshold to power the energy storage unit 22. As an example, the switching circuit 26 can perform pulse width modulation (PWM) on the voltage of the selected working power to reduce the voltage of the selected working power to below the predetermined threshold.

[0055] In one embodiment, the main power supply and backup power supply can provide four different rated supply voltages, such as 380V, 400V, 415V, and 440V. The energy storage motor 221 can have two rated operating voltages, such as 380 / 415V and 440 / 480V. In the embodiment of the present disclosure, if the operating voltage selected by the power selection circuit 21 is within the voltage range of 380-440V, a 380 / 415V rated energy storage motor 221 can be uniformly selected. Through dynamic adjustment of the switching circuit 26, the operating voltage selected by the power selection circuit 21 can be adjusted to a voltage level of 380 / 415V. As an example, if the selected operating voltage is below a predetermined threshold of 380V, the switching circuit 26 can directly turn on its switching devices to power the energy storage motor 221. If the selected operating voltage is greater than 380V, the switching circuit 26 can periodically turn on its switching devices to reduce the voltage of the selected operating power supply to a predetermined voltage level to power the energy storage motor 221. By dynamically adjusting the input voltage of the energy storage motor 221 to meet the voltage requirement of the energy storage motor 221 , the energy storage motor 221 can be protected from being damaged when the input high voltage of the main power supply and the backup power supply is high.

[0056] It should be noted that the numbers, values, etc. mentioned above and elsewhere in this disclosure are exemplary and are not intended to limit the scope of this disclosure in any way. Any other appropriate numbers and values are possible.

[0057] According to the embodiments of the present disclosure, the dual power conversion switch device 20 only requires one type of energy storage motor 221, thereby reducing the variety of product specifications, facilitating customer selection, and improving the production efficiency of the dual power conversion switch device 20. Furthermore, the energy storage motor 221 is adaptive to different rated voltages. Furthermore, the energy storage motor 221 is located after the power selection circuit 21, extending its service life and safety.

[0058] An embodiment of the present disclosure also provides an apparatus for controlling an energy storage unit 22 of a dual power conversion switch device 20. The apparatus can be used to perform processes 300, 400, and 500 described above. The apparatus includes: a power supply selection module configured to, based on the power status of the main power supply and the backup power supply connected to the dual power conversion switch device 20, cause the power selection circuit 21 of the dual power conversion switch device 20 to select an operating power supply from the main power supply and the backup power supply for powering the energy storage unit 22 or the conversion unit 23 of the dual power conversion switch device 20. The conversion unit 23 can switch between opening and closing, and the energy storage unit 22 can assist in the conversion process of the conversion unit 23; an energy storage startup module configured to, in response to the energy stored in the energy storage unit 22 being consumed during the conversion process of the conversion unit 23, cause the energy storage unit 22 to be powered by the selected operating power supply, thereby storing energy in the energy storage unit 22; and an energy storage release module configured to, in response to the completion of the energy storage process of the energy storage unit 22, cause the energy storage unit 22 to release the power selection circuit 21.

[0059] In some embodiments, the power supply selection module is further configured to: determine whether the main power supply is in a normal state based on the electrical parameters of the main power supply; in response to the main power supply being in a normal state, generate a first selection signal to enable the power selection circuit 21 to select the main power supply as the working power supply; in response to the main power supply being in an abnormal state, determine whether the backup power supply is in a normal state based on the electrical parameters of the backup power supply; in response to the backup power supply being in a normal state, generate a second selection signal to enable the power selection circuit 21 to select the backup power supply as the working power supply; and in response to the backup power supply being in an abnormal state, generate a first selection signal to enable the power selection circuit 21 to select the main power supply as the working power supply.

[0060] In some embodiments, the device further includes: an energy storage suspension module, configured to, during the energy storage process of the energy storage unit 22, in response to both the main power supply and the backup power supply being in an abnormal state, cause the energy storage unit 22 to enter a standby state to suspend the energy storage process.

[0061] In some embodiments, the apparatus further includes: an energy storage recovery module configured to enable the energy storage unit 22 to resume the energy storage process in response to at least one of the main power supply and the backup power supply returning to a normal state.

[0062] In some embodiments, the device also includes: a conversion start module, which is configured to, when the energy storage unit 22 is in a standby state, in response to receiving a conversion command for the conversion unit 23, cause the energy storage unit 22 to release the power selection circuit 21 and cause the conversion unit 23 to be powered by the selected working power supply, thereby executing the conversion process of the conversion unit 23.

[0063] In some embodiments, the device further includes: an abnormality indication module configured to generate an indication signal for indicating that the energy storage unit 22 is in an error state in response to an error occurring during the energy storage process.

[0064] In some embodiments, the device further includes: an energy storage recovery module configured to cause the energy storage unit 22 to resume the energy storage process in response to the energy storage unit 22 returning to normal from an abnormal state.

[0065] In some embodiments, the device further includes: a conversion start module configured to, during the energy storage process of the energy storage unit 22, in response to receiving a conversion command for the conversion unit 23, cause the energy storage unit 22 to release the power selection circuit 21 and cause the conversion unit 23 to be powered by the selected working power supply, so as to perform the conversion process of the conversion unit 23; and an energy storage recovery module configured to, in response to the completion of the conversion process, cause the conversion unit 23 to release the power selection circuit 21 and cause the energy storage unit 22 to be powered by the selected working power supply, so as to resume the energy storage process.

[0066] In some embodiments, the device further includes a power supply switching module configured to: directly supply power to the energy storage unit 22 using the selected working power supply in response to the voltage of the selected working power supply being lower than a predetermined threshold; and cause the voltage of the selected working power supply to drop below the predetermined threshold to supply power to the energy storage unit 22 in response to the voltage of the selected working power supply being higher than the predetermined threshold.

[0067] In some embodiments, causing the voltage of the selected working power supply to drop below the predetermined threshold includes: performing pulse width modulation on the voltage of the selected working power supply.

[0068] Figure 7 A block diagram of an electronic device 700 in which one or more embodiments of the present disclosure can be implemented is shown. It should be understood that Figure 7 The illustrated electronic device 700 is merely exemplary and should not constitute any limitation to the functions and scopes of the embodiments described herein. Figure 7 The illustrated electronic device 700 can be used to implement Figure 2 and Figure 6 at least a part of the processing unit 25 shown.

[0069] As Figure 7As shown, the electronic device 700 is in the form of a general-purpose electronic device. The components of the electronic device 700 may include, but are not limited to, one or more processors or processing units 710, a memory 720, a storage device 730, one or more communication units 740, one or more input devices 750, and one or more output devices 760. The processing unit 710 may be an actual or virtual processor and be capable of performing various processes according to the programs stored in the memory 720. In a multi-processor system, multiple processing units execute computer-executable instructions in parallel to improve the parallel processing ability of the electronic device 700.

[0070] The electronic device 700 generally includes multiple computer storage media. Such media may be any accessible media that can be obtained by the electronic device 700, including but not limited to volatile and non-volatile media, removable and non-removable media. The memory 720 may be a volatile memory (such as registers, caches, random access memory (RAM)), a non-volatile memory (such as read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory), or some combination thereof. The storage device 730 may be a removable or non-removable medium and may include machine-readable media, such as a flash drive, a magnetic disk, or any other medium that can be used to store information and / or data (such as training data for training) and can be accessed within the electronic device 700.

[0071] The electronic device 700 may further include additional removable / non-removable, volatile / non-volatile storage media. Although not shown in Figure 7 a disk drive for reading from or writing to a removable, non-volatile magnetic disk (such as a "floppy disk") and an optical disk drive for reading from or writing to a removable, non-volatile optical disk may be provided. In these cases, each drive may be connected to a bus (not shown) by one or more data media interfaces. The memory 720 may include a computer program product 725 having one or more program modules that are configured to perform the various methods or actions of the various embodiments of the present disclosure.

[0072] The communication unit 740 enables communication with other electronic devices through a communication medium. Additionally, the functions of the components of the electronic device 700 may be implemented by a single computing cluster or multiple computer machines that are capable of communicating through a communication connection. Thus, the electronic device 700 may operate in a networked environment using a logical connection to one or more other servers, network personal computers (PCs), or another network node.

[0073] The input device 750 can be one or more input devices, such as a mouse, a keyboard, a trackball, etc. The output device 760 can be one or more output devices, such as a display, a speaker, a printer, etc. The electronic device 700 can also communicate with one or more external devices (not shown) as needed through the communication unit 740. The external devices such as a storage device, a display device, etc., communicate with one or more devices that enable the user to interact with the electronic device 700, or communicate with any device that enables the electronic device 700 to communicate with one or more other electronic devices (e.g., a network card, a modem, etc.). Such communication can be performed via an input / output (I / O) interface (not shown).

[0074] According to an exemplary implementation of the present disclosure, there is provided an apparatus for controlling an energy storage unit of a dual power conversion switch device. The apparatus includes at least one processing unit and at least one memory. The at least one memory is coupled to the at least one processing unit and stores instructions for execution by the at least one processing unit. When the instructions are executed by the at least one processing unit, the apparatus is caused to perform the method described above.

[0075] According to an exemplary implementation of the present disclosure, there is provided a dual power conversion switch device. The dual power conversion switch device includes: a conversion unit capable of switching between opening and closing; an energy storage unit capable of assisting the conversion process of the conversion unit; a power selection circuit capable of selecting a working power supply for powering the conversion unit and the energy storage unit from a main power supply and a standby power supply; and any one of the above apparatuses for controlling the energy storage unit of the dual power conversion switch device.

[0076] According to an exemplary implementation of the present disclosure, there is provided a computer-readable storage medium having computer-executable instructions stored thereon, where the computer-executable instructions are executed by a processor to implement the method described above. According to an exemplary implementation of the present disclosure, there is also provided a computer program product. The computer program product is tangibly stored on a non-transitory computer-readable medium and includes computer-executable instructions, and the computer-executable instructions are executed by a processor to implement the method described above.

[0077] Aspects of the present disclosure are described herein with reference to the flowcharts and / or block diagrams of methods, apparatuses, devices, and computer program products according to the present disclosure. It should be understood that each block of the flowcharts and / or block diagrams, and the combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer-readable program instructions.

[0078] These computer-readable program instructions can be provided to a processing unit of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, such that when these instructions are executed by the processing unit of the computer or other programmable data processing device, a device is generated that implements the functions / actions specified in one or more blocks in the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium, where these instructions cause the computer, programmable data processing device, and / or other device to operate in a specific manner. Thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing various aspects of the functions / actions specified in one or more blocks in the flowchart and / or block diagram.

[0079] Computer-readable program instructions can be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operational steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0080] The flow charts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple implementations of the present disclosure. In this regard, each box in the flow chart or block diagram can represent a part for a module, program segment or instruction, and a part for a module, program segment or instruction comprises one or more executable instructions for realizing the logical function of the specification. In some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be realized by a special hardware-based system that performs the function or action of the specification, or can be realized by a combination of special hardware and computer instructions.

[0081] While various implementations of the present disclosure have been described above, the foregoing description is intended to be illustrative, not exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described implementations. The terminology used herein is selected to best explain the principles of the implementations, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the various implementations disclosed herein.

Claims

1. A method for controlling an energy storage unit of a dual-power conversion switch device, comprising: Based on the power supply states of a main power supply and a standby power supply connected to the dual-power conversion switch device, causing a power selection circuit of the dual-power conversion switch device to select a working power supply from the main power supply and the standby power supply for supplying power to the energy storage unit or a conversion unit of the dual-power conversion switch device, the conversion unit being capable of switching between opening and closing, and the energy storage unit being capable of assisting the switching process of the conversion unit; In response to the energy stored in the energy storage unit being consumed during the switching process of the conversion unit, causing the energy storage unit to be powered by the selected working power supply, thereby storing energy in the energy storage unit; And In response to the completion of the energy storage process of the energy storage unit, causing the energy storage unit to release the power selection circuit.

2. The method according to claim 1, wherein the working power supply is selected by the following operations: Determining whether the main power supply is in a normal state based on electrical parameters of the main power supply; In response to the main power supply being in a normal state, generating a first selection signal to cause the power selection circuit to select the main power supply as the working power supply; In response to the main power supply being in an abnormal state, determining whether the standby power supply is in a normal state based on electrical parameters of the standby power supply; In response to the standby power supply being in a normal state, generating a second selection signal to cause the power selection circuit to select the standby power supply as the working power supply; And In response to the standby power supply being in an abnormal state, generating the first selection signal to cause the power selection circuit to select the main power supply as the working power supply.

3. The method according to claim 2, further comprising: During the energy storage process of the energy storage unit, in response to both the main power supply and the standby power supply being in an abnormal state, causing the energy storage unit to enter a standby state to pause the energy storage process.

4. The method according to claim 3, further comprising: When the energy storage unit is in the standby state, in response to at least one of the main power supply and the standby power supply returning to a normal state, causing the energy storage unit to resume the energy storage process.

5. The method according to claim 3, further comprising: When the energy storage unit is in the standby state, in response to receiving a switching command for the conversion unit, causing the energy storage unit to release the power selection circuit and causing the conversion unit to be powered by the selected working power supply, thereby performing the switching process of the conversion unit.

6. The method according to claim 1, further comprising: In response to an error occurring in the energy storage process, generating an indication signal indicating that the energy storage unit is in an error state.

7. The method according to claim 6, further comprising: In response to the energy storage unit returning to a normal state from an abnormal state, causing the energy storage unit to resume the energy storage process.

8. The method according to claim 1, further comprising: During the energy storage process of the energy storage unit, in response to receiving a conversion command for the conversion unit, the energy storage unit is caused to release the power selection circuit and the conversion unit is powered by the selected working power supply, thereby performing the conversion process of the conversion unit; and In response to the completion of the conversion process, the conversion unit is caused to release the power selection circuit and the energy storage unit is powered by the selected working power supply, thereby resuming the energy storage process.

9. The method according to claim 1, further comprising: In response to the voltage of the selected working power supply being lower than a predetermined threshold, causing the switching circuit to directly power the energy storage unit using the selected working power supply; and In response to the voltage of the selected working power supply being higher than the predetermined threshold, causing the switching circuit to reduce the voltage of the selected working power supply to be lower than the predetermined threshold to power the energy storage unit.

10. The method according to claim 9, wherein causing the voltage of the selected working power supply to be reduced to be lower than the predetermined threshold includes: Performing pulse width modulation on the voltage of the selected working power supply.

11. An apparatus for controlling an energy storage unit of a dual-power conversion switch device, comprising: At least one processing unit; and At least one memory coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the apparatus to perform the method according to any one of claims 1 to 10.

12. A dual-power conversion switch device, comprising: A conversion unit capable of switching between opening and closing; An energy storage unit capable of assisting the conversion process of the conversion unit; A power selection circuit capable of selecting a working power supply for powering the conversion unit and the energy storage unit from the main power supply and the standby power supply; and The apparatus according to claim 11 for controlling the energy storage unit.

13. The dual-power conversion switch device according to claim 12, further comprising a switching circuit connected between the power selection circuit and the energy storage unit and configured to: In the case where the voltage of the selected working power supply is lower than a predetermined threshold, directly power the energy storage unit using the selected working power supply; and In the case where the voltage of the selected working power supply is higher than the predetermined threshold, reduce the voltage of the selected working power supply to be lower than the predetermined threshold to power the energy storage unit.

14. A computer-readable storage medium having stored thereon a computer program executable by a processor to implement the method according to any one of claims 1 to 10.

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