Power supply system and control method thereof

Abstract

The invention discloses a power supply system and a control method thereof. The power supply system comprises an energy storage device, an inversion assembly and a multidirectional switch, the energy storage device is connected with a direct current end of the inversion assembly, and an alternating current end of the inversion assembly is connected with a first fixed contact of the multidirectional switch; a second fixed contact of the multidirectional switch is used for being connected with an external alternating-current power supply, and a common contact of the multidirectional switch is connected with a first component adopting alternating-current power supply. The power supply system provided by the embodiment of the invention can reduce the risk probability when alternating current power supply is carried out on the multifunctional machine equipment.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to a power supply system and a control method thereof. Background Art

[0002] Multifunctional machinery and equipment, such as floor grinders, need to be powered by AC and DC respectively for different components. In order to improve the power-off endurance of multifunctional machinery and equipment, in the related technology, a power supply system formed by connecting an external power supply and an energy storage device in parallel can be used to power the multifunctional machinery and equipment.

[0003] However, when using this power supply method to power components that use AC power, AC power from different sources may meet, causing an internal ring power supply and a short circuit, resulting in a high risk of AC power supply. Summary of the invention

[0004] In view of the above problems, the present application provides a power supply system and a control method thereof, which can reduce the probability of risks occurring when providing AC power supply to multifunctional machinery and equipment.

[0005] In a first aspect, an embodiment of the present application provides a power supply system, comprising an energy storage device, an inverter component and a multi-directional switch; the energy storage device is connected to the DC end of the inverter component, and the AC end of the inverter component is connected to the first fixed contact of the multi-directional switch; the second fixed contact of the multi-directional switch is used to connect to an external AC power supply, and the common contact of the multi-directional switch is connected to a first component that uses AC power supply.

[0006] In the technical solution of the embodiment of the present application, a power supply system is provided, including an energy storage device, an inverter component and a multidirectional switch; the energy storage device is connected to the DC end of the inverter component, and the AC end of the inverter component is connected to the first fixed contact of the multidirectional switch; the second fixed contact of the multidirectional switch is used to access an external AC power supply, and the common contact of the multidirectional switch is connected to the first component that uses AC power supply. Therefore, the AC power supply can be switched through the multidirectional switch, so that when AC power supply is required for the components that use AC power in the multifunctional machine equipment, at most only one AC power can power the component, and multiple AC power will not be used to power the components due to accidental touch or other means, avoiding the situation where AC power from different sources meets each other, thereby reducing the probability of risks when AC power supply is provided to the multifunctional machine equipment.

[0007] In some embodiments, the power supply system further comprises a switching power supply;

[0008] The AC end of the switching power supply is connected to the common contact of the multi-directional switch, and the DC end of the switching power supply is connected to the second component that adopts DC power supply.

[0009] In some embodiments, the energy storage device is connected to a DC terminal of the switching power supply;

[0010] A diode is provided between the positive electrode of the energy storage device and the DC end of the switching power supply, the positive electrode of the diode is connected to the positive electrode of the energy storage device, and the negative electrode of the diode is connected to the DC end of the switching power supply.

[0011] In some embodiments, the power supply system further includes a rectifier component;

[0012] The AC end of the rectifier assembly is connected to the common contact of the multi-directional switch, and the DC end of the rectifier assembly is connected to the energy storage device.

[0013] In some embodiments, the power supply system further includes a first switch assembly and a second switch assembly;

[0014] The first switch component is connected between the DC end of the inverter component and the energy storage device, and the second switch component is connected between the DC end of the rectifier component and the energy storage device;

[0015] The first switch assembly and the second switch assembly are interlocked.

[0016] In some embodiments, the power supply system further comprises a control unit;

[0017] The control unit is connected to the common contact of the multidirectional switch, the first switch assembly and the second switch assembly, and is used to determine the fixed contact connected to the multidirectional switch according to the detected current, so as to control the on-off state of the first switch assembly and the second switch assembly according to the fixed contact connected to the multidirectional switch;

[0018] Wherein, it is determined that the fixed contact connected to the multi-directional switch is the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

[0019] In some embodiments, the control unit is further configured to:

[0020] According to the detected current, it is determined that the second fixed contact of the multidirectional switch is disconnected from the external AC power supply, the multidirectional switch is controlled to switch to the first fixed contact, and the first switch assembly is controlled to close.

[0021] In a second aspect, the present application provides a control method for a power supply system, which is applied to the power supply system in any of the above embodiments, and the method includes: determining the fixed contact connected to the multi-directional switch according to the detected current, so as to control the on-off state of the first switch component and the second switch component according to the fixed contact connected to the multi-directional switch;

[0022] Wherein, it is determined that the fixed contact connected to the multi-directional switch is the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

[0023] In a third aspect, the present application provides a power exchange connector detection device, which is applied to the power supply system described in any of the above embodiments, and the device includes: a power supply control module, which is used to determine the fixed contact connected to the multi-directional switch according to the detected current, so as to control the on-off state of the first switch component and the second switch component according to the fixed contact connected to the multi-directional switch;

[0024] Wherein, it is determined that the fixed contact connected to the multi-directional switch is the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

[0025] In a fourth aspect, the present application provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the method in the implementation of the second aspect when executing the computer program.

[0026] In a fifth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the method in the implementation of the second aspect.

[0027] In a sixth aspect, the present application provides a computer program product, which, when executed on a computer, enables the computer to execute the method in the implementation of the second aspect.

[0028] In a seventh aspect, the present application provides a machine device, including the power supply system provided in the first aspect, or the electronic device provided in the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 A first structural diagram of a power supply system according to some embodiments of the present application;

[0031] Figure 2 A second structural diagram of a power supply system according to some embodiments of the present application;

[0032] Figure 3 A third structural diagram of a power supply system according to some embodiments of the present application;

[0033] Figure 4A fourth structural diagram of a power supply system according to some embodiments of the present application;

[0034] Figure 5 A fifth structural diagram of a power supply system according to some embodiments of the present application;

[0035] Figure 6 A sixth structural diagram of a power supply system according to some embodiments of the present application;

[0036] Figure 7 A seventh structural diagram of a power supply system according to some embodiments of the present application;

[0037] Figure 8 A flowchart of a control method for a power supply system according to some embodiments of the present application;

[0038] Fig. 9 A schematic diagram of the structure of a control device of a power supply system in some embodiments of the present application;

[0039] Fig.10 This is a schematic diagram of the structure of an electronic device according to some embodiments of the present application.

[0040] Some of the reference numerals in the specific implementation manner are as follows:

[0041] 10-energy storage device; 20-inverter assembly; QS-multidirectional switch; 30-first component; 40-switching power supply; 50-second component; 60-diode; 70-rectifier assembly; KA1-first switch assembly; KA2-second switch assembly; 80-phase sequence relay; 200-power supply control module; 300-electronic device; 301-processor; 302-memory; 303-communication bus. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0044] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple paths" refers to more than two paths (including two paths).

[0048] Multifunctional machinery and equipment, such as floor grinders, need to use AC and DC to power different components. In order to improve the power-off endurance of multifunctional machinery and equipment, in the related technology, the multifunctional machinery and equipment can be powered by a power supply system formed by connecting an external power supply and an energy storage device in parallel. However, when using this power supply method to power components that use AC power, AC power from different sources may meet, such as when the AC power inverted by the energy storage device meets the AC power of the external power supply, causing the internal ring power supply to short-circuit, resulting in a high risk of dual AC power supply.

[0049] In response to the above technical problems, the embodiment of the present application provides a power supply system, including an energy storage device, an inverter component and a multi-directional switch; the energy storage device is connected to the DC end of the inverter component, and the AC end of the inverter component is connected to the first fixed contact of the multi-directional switch; the second fixed contact of the multi-directional switch is used to access an external AC power supply, and the common contact of the multi-directional switch is connected to the first component that uses AC power supply. Therefore, the AC power supply can be switched through the multi-directional switch, so that when AC power supply is required for the components that use AC power in the multi-functional machine equipment, at most only one AC power can power the component, and multiple AC power will not be used to power the components due to accidental touch or other means, avoiding the situation where AC power from different sources meets each other, thereby reducing the probability of risks when AC power supply is provided to the multi-functional machine equipment.

[0050] According to some embodiments of the present application, a power supply system is provided, such as Figure 1 As shown, the power supply system includes an energy storage device 10, an inverter component 20 and a multi-directional switch QS; the energy storage device 10 is connected to the DC end of the inverter component 20, and the AC end of the inverter component 20 is connected to the first fixed contact of the multi-directional switch QS; the second fixed contact of the multi-directional switch QS is used to connect to an external AC power supply, and the common contact of the multi-directional switch QS is connected to the first component 30 that uses AC power supply.

[0051] In some embodiments, the energy storage device 10 may include a battery pack, wherein the battery pack may include at least one battery cell, such as a plurality of battery cells connected in series or in parallel or in series and in parallel. The battery cell may be a battery cell of any material, such as a lithium-ion battery, a sodium-ion battery, a nickel-hydrogen battery, a lead-acid battery, etc.

[0052] The inverter assembly 20 may include an inverter, such as an inverter that inverts 48V DC power into 220V AC power. The DC end of the inverter assembly 20 is connected to the energy storage device 10, such as the DC input end of the inverter assembly 20 is connected to the positive electrode of the energy storage device 10, and the DC output end of the inverter assembly 20 is connected to the negative electrode of the energy storage device 10, so as to invert the DC power of the energy storage device 10 into AC power and output it through the AC end of the inverter assembly 20.

[0053] The DC end of the inverter assembly 20 is connected to the energy storage device 10, and the DC end of the inverter assembly 20 may be directly electrically connected to the energy storage device 10, or the DC end of the inverter assembly 20 may be indirectly electrically connected to the energy storage device 10. That is, other components may be connected between the DC end of the inverter assembly 20 and the energy storage device 10, such as a circuit breaker, a resistor, or a relay.

[0054] The multidirectional switch QS may be a single-pole multi-throw switch having multiple fixed contacts and a common contact, such as a single-pole double-throw switch having two fixed contacts and a common contact. The fixed contacts in the multidirectional switch QS may be a first fixed contact and a second fixed contact, respectively. The first fixed contact of the multidirectional switch QS is connected to the AC end of the inverter assembly 20, and the second fixed contact of the multidirectional switch QS is connected to an external AC power supply, such as a mains power supply. The common contact of the multidirectional switch QS is connected to a first component 30 powered by AC, such as a first component 30 powered by AC in a machine device. The machine device may be a multifunctional machine device such as a floor grinder or a floor grinding robot.

[0055] The first fixed contact of the multidirectional switch QS can be directly or indirectly electrically connected to the AC end of the inverter assembly 20. For example, a leakage protector PFLD can be connected between the first fixed contact and the AC end of the inverter assembly 20.

[0056] When the multidirectional switch QS is switched to the first fixed contact, the energy storage device 10 is connected to the first component 30, and the energy storage device 10 can invert the DC power into AC power through the inverter assembly 20 to provide AC power to the first component 30; when the multidirectional switch QS is switched to the second fixed contact, the energy storage device 10 stops supplying power to the first component 30 and switches to supplying AC power to the first component 30 through an external AC power supply. As a result, the two AC currents cannot supply power to the first component 30 at the same time, and the situation where the two AC currents meet each other is avoided.

[0057] A power supply system is provided, including an energy storage device 10, an inverter assembly 20 and a multidirectional switch QS; the energy storage device 10 is connected to the DC end of the inverter assembly 20, and the AC end of the inverter assembly 20 is connected to the first fixed contact of the multidirectional switch QS; the second fixed contact of the multidirectional switch QS is used to access an external AC power source, and the common contact of the multidirectional switch QS is connected to the first component 30 that uses AC power supply. Therefore, the AC power supply can be switched through the multidirectional switch QS, so that when AC power supply is required for a component that uses AC power in a multifunctional machine device, at most only one AC power can power the component, and multiple AC power will not be used to power the component due to accidental contact or other means, thereby avoiding the situation where AC power from different sources meets each other, thereby reducing the probability of risks when AC power supply is provided to the multifunctional machine device.

[0058] Considering that there is usually a second component 50 in the machine equipment that requires DC power supply, in order to enable the first component 30 and the second component 50 to be powered at the same time to improve the stability of the operation of the machine equipment, in some embodiments, the power supply system also includes a switching power supply 40; the AC end of the switching power supply 40 is connected to the common contact of the multi-directional switch QS, and the DC end of the switching power supply 40 is connected to the second component 50 that uses DC power supply.

[0059] In some embodiments, the switching power supply 40 can be used to rectify AC power into DC power, such as the switching power supply 40 can be a switching power supply 40 that rectify 220V AC power into 48V DC power. The AC end of the switching power supply 40 can be directly electrically connected to the common contact of the multi-directional switch QS, or it can be indirectly electrically connected to the common contact of the multi-directional switch QS. The DC end of the switching power supply 40 can be directly electrically connected to the second component 50 that uses DC power supply, or it can be indirectly electrically connected to the second component 50 that uses DC power supply.

[0060] For example, considering that the rated voltage of the second component 50 in the multifunctional machine equipment may not match the DC voltage output by the DC terminal of the switching power supply 40, such as the second component 50 may be a component powered by 24V DC, while the DC voltage output by the DC terminal of the switching power supply 40 may be 48V, a DC / DC converter PT may be connected between the DC terminal of the switching power supply 40 and the second component 50, such as a DC / DC converter that converts 48V DC into 24V DC, so as to convert the DC voltage output by the switching power supply 40 into DC voltage suitable for the second component 50. Alternatively, a DC / DC converter PT and a switch SA1 may be connected in series between the DC terminal of the switching power supply 40 and the second component 50, and the switch SA1 may be a switch device such as a knob switch or a relay. Figure 3 As shown, one end of the switch SA1 is connected to the DC end of the switching power supply 40, the other end of the switch SA1 is connected to one end of the DC / DC converter PT, and the other end of the DC / DC converter PT is connected to the second component 50. Thus, the power supply of the second component 50 can be controlled by the switch SA1, so that when the first component 30 needs to be powered independently, the power supply of the second component 50 can be disconnected by the switch SA1, and when the first component 30 and the second component 50 need to be powered at the same time, the switch SA1 can be closed. Thus, the stability of the operation of the machine equipment and the flexibility of the power supply are improved.

[0061] Considering that in the process of fixed output point switching of the multi-directional switch QS, it is usually necessary to switch to the middle point contact first, and then switch from the middle point contact to the first fixed contact or the second fixed contact, and this switching process will cause a short power outage in the second component 50. The second component 50 is usually a controller, an industrial computer or a router of a machine device, and the switching of the fixed contact at this time will cause these components to restart, affecting the stability of the operation of the machine device.

[0062] To this end, in some embodiments, such as Figure 4 As shown, the energy storage device 10 is connected to the DC end of the switching power supply 40; a diode 60 is provided between the positive electrode of the energy storage device 10 and the DC end of the switching power supply 40, the positive electrode of the diode 60 is connected to the positive electrode of the energy storage device 10, and the negative electrode of the diode 60 is connected to the DC end of the switching power supply 40.

[0063] Since the energy storage device 10 is connected to the DC end of the switching power supply 40, the DC power rectified by the energy storage device 10 and the switching power supply 40 can be used to power the second component 50, so that during the process of the multi-directional switch QS switching the fixed output point, the energy storage device 10 can also be used to power the second component 50, so that the second component 50 can continue to work and avoid the second component 50 restarting due to the fixed contact switching. By connecting the diode 60, the energy storage device 10 is only discharged but not charged in the circuit, effectively maintaining the reliability of the energy storage device 10 powering the second component 50, thereby improving the stability of the operation of the machine equipment.

[0064] In order to improve the endurance of the energy storage device 10 and to improve the stability of power supply, in some embodiments, for example Figure 5 As shown, the power supply system further includes a rectifier assembly 70 ; the AC end of the rectifier assembly 70 is connected to the common contact of the multi-directional switch QS, and the DC end of the rectifier assembly 70 is connected to the energy storage device 10 .

[0065] In some embodiments, the rectifier assembly 70 may be a rectifier, such as a VSC (Voltage Source Converter) valve group, which may be a two-level or three-level PWM rectifier topology, or may be composed of an MMC (Modular Multilevel Converter), which may adjust the output voltage by adjusting the multilevel converter so that it can adapt to the charging voltage required by the energy storage device 10 during charging. Alternatively, it may be a rectifier that rectifies a 220V AC input into a 48V DC output.

[0066] The AC end of the rectifier assembly 70 may be directly or indirectly electrically connected to the common contact of the multidirectional switch QS, such as a circuit breaker PQ1 may be connected between the AC end of the rectifier assembly 70 and the common contact of the multidirectional switch QS. The DC end of the rectifier assembly 70 is connected to the energy storage device 10, and the DC output end of the rectifier assembly 70 may be connected to the positive pole of the energy storage device 10, and the DC input end of the rectifier assembly 70 may be connected to the negative pole of the energy storage device 10. The DC end of the rectifier assembly 70 is connected to the energy storage device 10, and the DC end of the rectifier assembly 70 may be directly or indirectly electrically connected to the energy storage device 10. Exemplarily, a circuit breaker, a resistor, a relay, etc. may be connected between the DC output end of the rectifier assembly 70 and the positive pole of the energy storage device 10.

[0067] When the multidirectional switch QS is switched to the second fixed contact and powered by an external AC power source, the external AC power source can simultaneously power the energy storage device 10 through the rectifier assembly 70 , thereby improving the endurance of the energy storage device 10 .

[0068] To further improve the reliability of the power supply system, in some embodiments, Figure 6 As shown, the power supply system also includes a first switch component KA1 and a second switch component KA2; the first switch component KA1 is connected between the DC end of the inverter component 20 and the energy storage device 10, and the second switch component KA2 is connected between the DC end of the rectifier component 70 and the energy storage device 10; the first switch component KA1 and the second switch component KA2 are interlocked.

[0069] In some embodiments, the first switch assembly KA1 and the second switch assembly KA2 may be relays or DC contactors. The interlocking of the first switch assembly KA1 and the second switch assembly KA2 means that when the first switch assembly KA1 is closed, the second switch assembly KA2 is disconnected; when the second switch assembly KA2 is closed, the first switch assembly KA1 is disconnected. Since the first switch assembly KA1 and the second switch assembly KA2 are interlocked, when the multidirectional switch QS is switched to the first fixed contact and the energy storage device 10 is required to power the first component 30, the first switch assembly KA1 can be closed, and the second switch assembly KA2 is disconnected at this time to avoid the situation where the battery is charged after inversion. When the multidirectional switch QS is switched to the second fixed contact and an external AC power supply is required to power the first component 30, the second switch assembly KA2 can be closed, and the second switch assembly KA2 is disconnected at this time, so that the external AC power supply can charge the energy storage device 10 at the same time. Thereby further improving the reliability of the power supply system.

[0070] In order to further improve the reliability of the power supply system, in some embodiments, the power supply system also includes a control unit; the control unit is connected to the common contact of the multi-directional switch QS, the first switch component KA1 and the second switch component KA2, and is used to determine the fixed contact connected to the multi-directional switch QS according to the detected current, so as to control the on and off states of the first switch component KA1 and the second switch component KA2 according to the fixed contact connected to the multi-directional switch QS; wherein, the fixed contact connected to the multi-directional switch QS is determined to be the first fixed contact of the multi-directional switch QS, and the second switch component KA2 is controlled to be disconnected.

[0071] In some embodiments, Figure 7 As shown, the control unit may include a controller (not shown) and a phase sequence relay 80. One end of the phase sequence relay 80 is connected to the common contact of the multidirectional switch QS, and the other end of the phase sequence relay 80 is connected to the controller, and the controller is connected to the first switch assembly KA1 and the second switch assembly KA2.

[0072] The phase sequence relay 80 can be used to detect three-phase alternating current. The controller is used to detect the current of the common contact of the multi-directional switch QS through the phase sequence relay 80 to determine whether the fixed contact connected to the multi-directional switch QS is the first fixed contact or the second fixed contact through the detected current.

[0073] For example, if the current detected by the phase sequence relay 80 is the three-phase AC power of the external AC power supply, it can be determined that the fixed contact connected to the multidirectional switch QS is the second fixed contact. At this time, the controller can control the second switch component KA2 to close and the first switch component KA1 to open, so as to supply power to the first component 30, the second component 50 and the energy storage device 10 through the external AC power supply. If the current detected by the phase sequence relay 80 is the inverted AC power, it can be determined that the fixed contact connected to the multidirectional switch QS is the first fixed contact. The controller can control the first switch component KA1 to close and the second switch component KA2 to open, so as to supply power to the first component 30 and the second component 50 through the energy storage device 10, and at the same time prevent the energy storage device 10 from charging itself, thereby improving the reliability of the power supply system.

[0074] In some embodiments, the controller may also be connected to the switch SA1 to control the switch SA1 to be disconnected when power is not required for the second component 50 .

[0075] In order to further improve the reliability of the power supply system, in some embodiments, the control unit is also used to: determine, based on the detected current, that the second fixed contact of the multi-directional switch QS is disconnected from the external AC power supply, control the multi-directional switch QS to switch to the first fixed contact, and control the first switch assembly KA1 to close.

[0076] In some embodiments, the controller may also be electrically connected to the multidirectional switch QS. If the phase sequence relay 80 detects that the current jumps from the three-phase AC power of the external AC power supply to no current, it can be determined that the second fixed contact of the multidirectional switch QS is disconnected from the external AC power supply. At this time, the multidirectional switch QS can be controlled to switch to the first fixed contact, and the first switch component KA1 can be controlled to close, so as to supply power to the first component and the second component through the energy storage device 10.

[0077] Alternatively, if the phase sequence relay 80 detects that the current is no current, the fixed contact connected to the multidirectional switch QS can be assumed to be the first fixed contact. At this time, the controller can control the first switch component KA1 to close, the second switch component KA2 to disconnect, and detect the current; if the detected current is the inverted AC power, the fixed contact connected to the multidirectional switch QS can be determined to be the first fixed contact, and no adjustment is made; if the detected current is still no current, the fixed contact connected to the multidirectional switch QS can be determined to be the second fixed contact, and the second fixed contact of the multidirectional switch QS is disconnected from the external AC power supply. At this time, the multidirectional switch QS can be controlled to switch to the first fixed contact to power the first component and the second component through the energy storage device 10. Since the first switch component KA1 and the second switch component KA2 are interlocked, the second switch component KA2 will be disconnected to prevent the energy storage device 10 from charging itself. Therefore, when the external AC power supply is disconnected, the power-off time of the first component 30 can be effectively reduced, and the reliability of the dual AC power supply can be improved.

[0078] Figure 8 A flow chart of a control method for a power supply system provided in an embodiment of the present application is shown. The control method for a power supply system is applied to the power supply system in any of the above embodiments, and specifically, can be applied to the control unit in any of the above embodiments.

[0079] In some embodiments, the control method of the power supply system includes:

[0080] S101, determining a fixed contact connected to the multidirectional switch according to the detected current, so as to control the on / off state of the first switch component and the second switch component according to the fixed contact connected to the multidirectional switch;

[0081] Wherein, it is determined that the fixed contact connected to the multi-directional switch is the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

[0082] In some embodiments, the method further comprises:

[0083] According to the detected current, it is determined that the second fixed contact of the multidirectional switch is disconnected from the external AC power supply, the multidirectional switch is controlled to switch to the first fixed contact, and the first switch assembly is controlled to close.

[0084] Fig. 9 A schematic structural block diagram of a power replacement connector detection device provided in an embodiment of the present application is shown. It should be understood that the device and Figure 8 Corresponding to the method embodiment executed in, the steps involved in the aforementioned method can be executed. The specific functions of the device can be found in the description above. To avoid repetition, detailed descriptions are appropriately omitted here. The device includes at least one software function module that can be stored in a memory in the form of software or firmware or solidified in the operating system (OS) of the device. Specifically, the device can be applied to the power supply system in any of the above embodiments, and specifically, it can be applied to the control unit of the power supply system. The device includes: a power supply control module 200, which is used to determine the fixed contact connected to the multi-directional switch according to the detected current, so as to control the on-off state of the first switch component and the second switch component according to the fixed contact connected to the multi-directional switch; wherein, the fixed contact connected to the multi-directional switch is determined to be the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

[0085] According to some embodiments of the present application, the power supply control module 200 is also used to: determine, based on the detected current, that the second fixed contact of the multi-directional switch is disconnected from the external AC power supply, control the multi-directional switch to switch to the first fixed contact, and control the first switch assembly to close.

[0086] According to some embodiments of the present application, Fig.10 As shown, an embodiment of the present application provides an electronic device 300, including: a processor 301 and a memory 302, the processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanisms (not marked), the memory 302 stores a computer program executable by the processor 301, and when the computing device is running, the processor 301 executes the computer program to execute a method executed by an external terminal in any optional implementation method, for example: according to the detected current, determine the fixed contact connected to the multi-directional switch to control the on-off state of the first switch component and the second switch component according to the fixed contact connected to the multi-directional switch; wherein, the fixed contact connected to the multi-directional switch is determined to be the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

[0087] The present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method in any of the aforementioned optional implementations is executed.

[0088] Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable red-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, disk or optical disk.

[0089] The present application provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute the method in any optional implementation manner.

[0090] The present application provides a machine device, which includes the electronic device or power supply system as described in the above embodiment. The machine device includes but is not limited to a power-consuming device such as a floor grinder or a floor grinding robot, which has a first component powered by AC power and a second component powered by DC power.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A power supply system, characterized in that: It includes energy storage device, inverter assembly and multi-directional switch; The energy storage device is connected to the DC end of the inverter assembly, and the AC end of the inverter assembly is connected to the first fixed contact of the multi-directional switch; The second fixed contact of the multidirectional switch is used to connect to an external AC power supply, and the common contact of the multidirectional switch is connected to a first component powered by AC.

2. The power supply system according to claim 1, characterized in that: The power supply system also includes a switching power supply; The AC end of the switching power supply is connected to the common contact of the multi-directional switch, and the DC end of the switching power supply is connected to the second component that adopts DC power supply.

3. The power supply system according to claim 2, characterized in that: The energy storage device is connected to the DC terminal of the switching power supply; A diode is provided between the positive electrode of the energy storage device and the DC end of the switching power supply, the positive electrode of the diode is connected to the positive electrode of the energy storage device, and the negative electrode of the diode is connected to the DC end of the switching power supply.

4. The power supply system according to any one of claims 1 to 3, characterized in that: The power supply system also includes a rectifier component; The AC end of the rectifier assembly is connected to the common contact of the multi-directional switch, and the DC end of the rectifier assembly is connected to the energy storage device.

5. The power supply system according to claim 4, characterized in that: The power supply system further comprises a first switch assembly and a second switch assembly; The first switch component is connected between the DC end of the inverter component and the energy storage device, and the second switch component is connected between the DC end of the rectifier component and the energy storage device; The first switch assembly and the second switch assembly are interlocked.

6. The power supply system according to claim 5, characterized in that: The power supply system also includes a control unit; The control unit is connected to the common contact of the multidirectional switch, the first switch assembly and the second switch assembly, and is used to determine the fixed contact connected to the multidirectional switch according to the detected current, so as to control the on-off state of the first switch assembly and the second switch assembly according to the fixed contact connected to the multidirectional switch; Wherein, it is determined that the fixed contact connected to the multi-directional switch is the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

7. The power supply system according to claim 6, characterized in that: The control unit is also used for: According to the detected current, it is determined that the second fixed contact of the multidirectional switch is disconnected from the external AC power supply, the multidirectional switch is controlled to switch to the first fixed contact, and the first switch assembly is controlled to close.

8. A control method for a power supply system, characterized in that: Applied to the power supply system according to any one of claims 6 to 7, the method comprises: Determine the fixed contact connected to the multidirectional switch according to the detected current, so as to control the on / off state of the first switch component and the second switch component according to the fixed contact connected to the multidirectional switch; Wherein, it is determined that the fixed contact connected to the multi-directional switch is the first fixed contact of the multi-directional switch, and the second switch component is controlled to be disconnected.

9. An electronic device comprising a processor and a memory storing a computer program, characterized in that: When the processor executes the computer program, the control method of the power supply system according to claim 8 is implemented.

10. A machine device, characterized in that: It comprises the power supply system as described in claims 1-8 or the electronic device as described in claim 9.

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