Power supply control method, power supply control system, and elevator system

Abstract

The present invention discloses a power supply control method, a power supply control system, and an elevator system, and relates to the field of elevator technology. The power supply control method includes: determining whether the idle time of the elevator drive device is greater than a preset threshold; if so, the elevator drive device is in an idle state, and further determining whether the external power supply is supplying power to the charging module; if it is determined that the external power supply has not stopped supplying power to the charging module, detecting the power level of the battery module, and controlling the charging module to charge the battery module according to the power level of the battery module. In the above manner, the battery module is used to directly power the elevator system, and the power level of the battery module is managed by using the control module when the elevator drive device is in an idle state, thereby solving the power loss caused by setting an emergency power supply in the elevator power control system, and extending the service life of the battery in the battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a power supply control method, a power supply control system and an elevator system. Background Art

[0002] The widespread use of elevator systems in daily life has brought great convenience to people's lives. In existing technologies, modules such as the traction motor inverter, brake power supply, and door controller in elevator systems are all powered directly by the power grid. In the event of a power outage, the emergency power supply activates to power the elevator system, thereby maintaining elevator operation and providing emergency rescue services.

[0003] In the prior art, the emergency power supply for the elevator system is equipped with a small-capacity battery module. When the power grid supplies power to the elevator system, the power grid continuously charges the emergency power supply through the charging module connected to the emergency power supply. At this time, the battery module is in an idle state and consumes power itself, resulting in power loss when the elevator system is in normal operation or idle state. At the same time, since the emergency power supply is set in the elevator system, the volume and manufacturing cost of the elevator power supply system are increased. At the same time, the power of the battery module is managed by the control module, thereby extending the service life of the batteries in the battery module. Summary of the Invention

[0004] The present invention provides a power supply control method, a power supply control system and an elevator system, so as to solve the problem of power loss caused by the use of an emergency power supply in the power supply control system of an elevator in the prior art.

[0005] To solve the above problems, the present invention provides a power supply control method. The execution subject of the method is a power supply control system. The power supply control system includes a charging module and a battery module and is applied to an elevator drive device. The control method includes:

[0006] Determining whether the idle time of the elevator drive device is greater than a preset threshold;

[0007] If so, the elevator drive device is in an idle state, and further determining whether an external power source is supplying power to the charging module;

[0008] If it is determined that the external power source has not stopped supplying power to the charging module, the power level of the battery module is detected, and the charging module is controlled to charge the battery module according to the power level of the battery module.

[0009] Furthermore, the step of detecting the power level of the battery module and controlling the charging module to charge the battery module according to the power level of the battery module includes: controlling the charging module to charge the battery module, and judging whether the power level of the battery module is greater than a first preset threshold value of the power level of the battery module; if so, controlling the charging module to stop charging the battery module, and further controlling the battery module to continue to supply power to the elevator drive device in an idle state; judging whether the power level of the battery module is less than a second preset threshold value of the power level of the battery module; if so, controlling the charging module to charge the battery module.

[0010] Furthermore, the step of detecting the power level of the battery module and controlling the charging module to charge the battery module according to the power level of the battery module also includes: if it is determined that the power level of the battery module is less than a first preset threshold value of the power level of the battery module, controlling the charging module to charge the battery module, and further controlling the battery module to continue to supply power to the elevator drive device in an idle state; if it is determined that the power level of the battery module is greater than a second preset threshold value of the power level of the battery module, controlling the charging module to stop charging the battery module.

[0011] Furthermore, the control method further includes: if it is determined that the external power supply stops supplying power to the charging module, controlling the battery module to stop supplying power to the elevator drive device, so as to control the power supply control system to be in an energy-saving state.

[0012] Furthermore, after determining that the external power supply has not stopped supplying power to the charging module, the control method further includes: determining whether the battery module is working normally; if it is determined that the battery module is working abnormally, controlling the charging module to supply power to the elevator drive device.

[0013] To solve the above problems, the present invention also provides a power supply control system, which is applied to the above power supply control method, and includes a charging module, a battery module and a control module, wherein: the charging module is respectively connected to an external power supply and the battery module, for charging the battery module; the battery module is connected to an elevator drive device, for powering the elevator drive device; the control module is respectively connected to the elevator drive device, the charging module and the battery module; wherein, the control module is used to determine whether the idle time of the elevator drive device is greater than a preset threshold; if so, based on the fact that the elevator drive device is in an idle state, the control module further determines whether the external power supply supplies power to the charging module; if the control module determines that the external power supply has not stopped supplying power to the charging module, it detects the power level of the battery module, and according to the power level of the battery module, the control module controls the charging module to charge the battery module.

[0014] To solve the above problems, the present invention also provides an elevator system, including a power supply control system and an elevator drive device, wherein the power supply control system is connected to the elevator drive device and is used to control the elevator drive device, and the power supply control system is the above power supply control system.

[0015] The present invention provides a power supply control method, a power supply control system, and an elevator system. The power supply control method includes: determining whether the idle time of an elevator drive device is greater than a preset threshold; if so, the elevator drive device is in an idle state, and further determining whether an external power supply is supplying power to a charging module; if it is determined that the external power supply has not stopped supplying power to the charging module, detecting the power level of a battery module, and controlling the charging module to charge the battery module based on the power level of the battery module. The present invention uses a battery module to directly power the elevator system, and uses a control module to manage the power level of the battery module when the elevator drive device is in an idle state, thereby addressing the power loss caused by providing an emergency power supply in the elevator power control system and extending the service life of the batteries in the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the first embodiment of the power supply control system of the present invention;

[0017] Figure 2 is a flow chart of a first embodiment of a power supply control method according to the present invention;

[0018] Figure 3 is a flow chart of a second embodiment of a power supply control method according to the present invention;

[0019] Figure 4 is a flow chart of a third embodiment of a power supply control method according to the present invention;

[0020] Figure 5 It is a structural diagram of the first embodiment of the elevator system of the present invention. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] The terms "first," "second," and the like in the present invention are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0023] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] See also Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of the first embodiment of the power supply control system 1 of the present invention. Figure 2 FIG. 1 is a flow chart of the first embodiment of the power supply control method of the present invention. Figure 1 As shown, the power supply control system 1 of the present invention includes: a charging module 10 , a battery module 20 and a control module 30 .

[0025] The charging module 10 is connected to the external power source 40 and the battery module 20, respectively. The external power source 40 supplies power to the charging module 10, so that when the external power source 40 supplies power to the charging module 10, the charging module 10 can be used to charge the battery module 20. The battery module 20 is connected to the elevator drive device 2 to supply power to the elevator drive device 2.

[0026] The control module 30 is connected to the elevator drive unit 2, the charging module 10, and the battery module 20, respectively. The control module 30 is configured to detect the idle time of the elevator drive unit 2 and, based on the idle time, determine whether the elevator drive unit 2 is in an idle state or in normal operation. The control module 30 also determines whether the external power supply 40 is supplying power to the charging module 10. If the external power supply 40 is not stopping supplying power to the charging module 10, the control module 30 detects the charge level of the battery module 20. The control module 30, connected to the charging module 10, controls the charging module 10 to charge the battery module 20 based on the charge level of the battery module 20.

[0027] The following describes in detail the power supply control method of the power supply control system 1. Figure 2 , Figure 2 FIG. 1 is a flow chart of the first embodiment of the power supply control method of the present invention. Figure 2As shown, the power supply control method of the present invention includes the following steps:

[0028] S101: Determine whether the idle time of the elevator drive device 2 is greater than a preset threshold.

[0029] The control module 30 detects the idle time of the elevator drive device 2 and determines whether the idle time of the elevator drive device 2 is greater than a preset threshold, and the control module 30 can determine the working status of the elevator drive device 2 based on the idle time of the elevator drive device 2.

[0030] S102 : Determine whether the external power source 40 supplies power to the charging module 10 .

[0031] When the control module 30 determines that the idle time of the elevator drive device 2 is greater than a preset threshold, the control module 30 determines that the elevator drive device 2 is in an idle state. The control module 30 detects the operating state of the charging module 10 when the elevator drive device 2 is in the idle state to determine whether the external power supply 40 is supplying power to the charging module 10.

[0032] S103 : Detecting the power level of the battery module 20 and controlling the charging module 10 to charge the battery module 20 .

[0033] When the control module 30 determines that the external power supply 40 has not stopped supplying power to the charging module 10, the battery module 20 supplies power to the idle elevator drive device 2 to cover the daily power consumption of the elevator drive device 2. At this time, the control module 30 detects the power level of the battery module 20 and controls the charging module 10 to charge the battery module 20 based on the power level of the battery module 20, so that the power level of the battery module 20 is within the optimal power range.

[0034] Different from the prior art, the power supply control method of the present invention is implemented by a power supply control system 1, which includes a charging module 10 and a battery module 20 and is applied to an elevator drive device 2. The power supply control method includes: determining whether the idle time of the elevator drive device 2 is greater than a preset threshold; if so, the elevator drive device 2 is in an idle state, and further determining whether the external power supply 40 is supplying power to the charging module 10; if it is determined that the external power supply 40 has not stopped supplying power to the charging module 10, then detecting the power level of the battery module 20 and controlling the charging module 10 to charge the battery module 20 based on the power level of the battery module 20. In this manner, the battery module 20 is used to directly power the elevator system 3, and the power level of the battery module 20 is managed by using the control module 30 when the elevator drive device 2 is in an idle state, thereby resolving the power loss caused by setting an emergency power supply in the elevator power supply control system 1 and extending the service life of the batteries in the battery module 20.

[0035] See also Figure 3 , Figure 3 It is a flow chart of the second embodiment of the power supply control method of the present invention. Figure 3 for Figure 2 The specific implementation steps of step S103 are as follows: Figure 3 As shown, the power supply control method of the present invention detects the power level of the battery module 20 and controls the charging module 10 to charge the battery module 20, including the following steps:

[0036] S201 : Control the charging module 10 to charge the battery module 20 .

[0037] When the control module 30 determines that the external power supply 40 has not stopped supplying power to the charging module 10, the battery module 20 continues to supply power to the elevator drive device 2 in an idle state. The control module 30 controls the charging module 10 to continue charging the battery module 20, and at this time the battery module 20 continues to supply power to the elevator drive device 2 in an idle state.

[0038] S202: Determine whether the power level of the battery module 20 is greater than a first preset threshold.

[0039] The control module 30 detects the power level of the battery module 20, obtains power level detection information of the battery module 20, and determines whether the power level of the battery module 20 is greater than a first preset threshold value of the power level of the battery module 20 based on the power level detection information. Specifically, if the control module 30 determines that the power level of the battery module 20 is greater than the first preset threshold value of the power level of the battery module 20, the process proceeds to step S203; if the control module 30 determines that the power level of the battery module 20 is less than the first preset threshold value of the power level of the battery module 20, the process returns to step S201.

[0040] S203 : Control the charging module 10 to stop charging the battery module 20 .

[0041] When the control module 30 determines that the power level of the battery module 20 is greater than the first preset threshold value of the power level of the battery module 20, the control module 30 controls the charging module 10 to stop charging the battery module 20. At this time, the battery module 20 continues to supply power to the elevator drive device 2 in an idle state to provide the daily power consumption of the elevator drive device 2 in an idle state.

[0042] S204: Determine whether the power level of the battery module 20 is less than a second preset threshold.

[0043] After the elevator drive device 2 consumes power for a period of time, the power level of the battery module 20 decreases. The control module 30 detects the power level of the battery module 20, obtains power level detection information of the battery module 20, and determines based on the power level detection information whether the power level of the battery module 20 is less than a second preset threshold value of the power level of the battery module 20. Specifically, if the control module 30 determines that the power level of the battery module 20 is less than the second preset threshold value of the power level of the battery module 20, the process returns to step S201; if the control module 30 determines that the power level of the battery module 20 is greater than the second preset threshold value of the power level of the battery module 20, the process returns to step S203.

[0044] It should be noted that the first preset threshold value of the power level of the battery module 20 is the optimal upper limit of the power level of the battery module 20, and the second preset threshold value of the power level of the battery module 20 is the optimal lower limit of the power level of the battery module 20. The power level of the battery module 20 is detected by the control module 30, and the power level of the battery module 20 is controlled to be between the first preset threshold value and the second preset threshold value, so that the power level of the battery module 20 can be controlled to be at the optimal level.

[0045] Different from the prior art, the power supply control method of the present invention includes: controlling the charging module 10 to charge the battery module 20, and determining whether the power level of the battery module 20 is greater than a first preset threshold value of the power level of the battery module 20; if so, controlling the charging module 10 to stop charging the battery module 20, and further controlling the battery module 20 to continue to supply power to the elevator drive device 2 in an idle state; determining whether the power level of the battery module 20 is less than a second preset threshold value of the power level of the battery module 20; if so, controlling the charging module 10 to charge the battery module 20. In the above manner, the power level of the battery module 20 is detected by the control module 30, and the charging of the battery module 20 by the charging module 10 is adjusted, so that the power level of the battery module 20 is controlled to be between the first preset threshold value and the second preset threshold value, that is, the power level of the battery module 20 is controlled to be at an optimal level, which can prevent the battery module 20 from being overcharged and over-discharged, while also achieving energy conservation and environmental protection as well as protection of the safe operation of the battery module 20.

[0046] See also Figure 4 , Figure 4 FIG. 1 is a flow chart of the third embodiment of the power supply control method of the present invention. Figure 4 As shown, the power supply control method of the present invention further includes the following steps:

[0047] S301 : Determine whether the external power source 40 supplies power to the charging module 10 .

[0048] When the control module 30 determines that the idle time of the elevator drive device 2 is greater than a preset threshold, the control module 30 determines that the elevator drive device 2 is in an idle state. The control module 30 detects the operating state of the charging module 10 when the elevator drive device 2 is in the idle state to determine whether the external power supply 40 is supplying power to the charging module 10.

[0049] S302 : Control the battery module 20 to stop supplying power to the elevator drive device 2 .

[0050] When the control module 30 determines that the external power supply 40 stops supplying power to the charging module 10, the control module 30 controls the battery module 20 to stop supplying power to the elevator drive device 2 in an idle state based on the power outage of the external power supply 40, so as to control the power supply control system 1 to be in an energy-saving state, thereby reducing the power loss of the battery module 20 when the elevator drive device 2 is in an idle state, achieving energy saving of the battery module 20, and improving the life of the battery module 20.

[0051] S303: Determine whether the battery module 20 operates normally.

[0052] When the control module 30 determines that the external power supply 40 has not stopped supplying power to the charging module 10, the control module 30 further determines whether the battery module 20 is operating normally. Specifically, when the control module 30 determines that the battery module 20 is operating normally, the battery module 20 continues to supply power to the elevator drive device 2 in the idle state to provide the daily power required by the elevator drive device 2 in the idle state. When the control module 30 determines that the battery module 20 is operating abnormally, the process proceeds to step S304.

[0053] S304 : Control the charging module 10 to supply power to the elevator driving device 2 .

[0054] When the control module 30 determines that the battery module 20 is malfunctioning, the control module 30 controls the battery module 20 to stop supplying power to the elevator drive device 2, and controls the charging module 10 to directly supply power to the elevator drive device 2 to provide the daily power required when the elevator drive device 2 is in an idle state.

[0055] In the above manner, when the battery module 20 is in an idle state, by detecting whether the external power supply 40 is supplying power to the power supply control system 1, when the power supply control system 1 is in a power-off state, the control module 30 controls the battery module 20 to stop supplying power to the elevator drive device 2, so as to achieve energy saving of the battery module 20 and maintain the power of the battery module 20.

[0056] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the power supply control system 1 of the present invention. Figure 1As shown, the power supply control system 1 of the present invention includes: a control module 30 , a charging module 10 and a battery module 20 .

[0057] Specifically, the charging module 10 is connected to an external power source 40, which supplies power to the charging module 10. The external power source 40 is a power grid external to the power supply control system 1. When the power grid is connected to the charging module 10 of the power supply control system 1, it transmits electrical energy to the charging module 10 by providing an AC input signal.

[0058] The battery module 20 is connected to the charging module 10 and the elevator drive device 2. When the external power supply 40 supplies power to the charging module 10, the charging module 10 charges the battery module 20, and the battery module 20 supplies power to the elevator drive device 2. The high-voltage AC input signal provided by the external power supply 40 is processed by the charging module 10 and the battery module 20, and then the battery module 20 generates a low-voltage DC input signal, which is output to the elevator drive device 2.

[0059] Optionally, in other embodiments, the battery module 20 and the charging module 10 are arranged in the same circuit unit of the power supply control system 1, and the control module 30 controls the battery module 20 and the charging module 10 of the circuit unit to regulate the charging and discharging of the battery module 20.

[0060] It should be noted that a low-voltage DC input signal is outputted from the battery module 20 to the elevator drive device 2 to provide electrical energy for the elevator drive device 2, so that the elevator drive device 2 provides low-voltage power to the battery module 20 during operation, thereby reducing the electrical safety hazards of the elevator drive device 2.

[0061] The control module 30 of the power supply control system 1 is connected to the elevator drive device 2, the charging module 10 and the battery module 20. The control module 30 detects the power level of the battery module 20 when the elevator drive device 2 is in an idle state, and controls the charging module 10 to charge the battery module 20 based on the power level of the battery module 20.

[0062] Optionally, the battery module 20 includes a BMS (battery management system). The BMS can intelligently manage and maintain each unit of the battery module 20, prevent overcharging and over-discharging of the battery module 20, thereby extending the service life of the battery module 20 and monitoring the status of the battery module 20. By connecting the battery module 20 to the control module 30 and using the BMS (battery management system), the battery information of the battery module 20 is collected, including the battery power, temperature, current, and voltage of the battery module 20. Based on the collected information, the control module 30 adjusts the charge and discharge of the battery module 20, thereby improving the safety and reliability of the battery module 20 during actual operation.

[0063] The power supply control system 1 also includes a first switch unit 50 and a second switch unit 21. The first switch unit 50 is connected to the external power supply 40 and the charging module 10, respectively. The second switch unit 21 is disposed in the battery module 20 and is connected to the battery module 20, the charging module 10, and the elevator drive device 2, respectively. When the external power supply 40 is in normal operation, the first switch unit 50 is controlled to enable the external power supply 40 to supply power to the charging module 10. When the external power supply 40 is in a power-off state, i.e., when the power grid connected to the power supply control system 1 is out of power or a power outage occurs, the first switch unit 50 and the second switch unit 21 are controlled to enable the external power supply 40 to stop supplying power to the charging module 10. At the same time, when the elevator is in an idle state, the battery module 20 is controlled to stop supplying power to the elevator drive device 2, thereby maintaining the charge level of the battery module 20 and achieving energy conservation of the battery module 20.

[0064] It should be noted that the second switch unit 21 is provided in the battery module 20. Based on the intelligent management of the BMS battery system (battery management system) in the battery module 20 and the control of the control module 30 connected thereto, it can regulate the charging and discharging of the battery module 20 during the process of the charging module 10 charging the battery module 20 and the battery module 20 discharging the elevator drive device 2, so that the battery power of the battery module 20 is maintained within a certain range, thereby achieving energy conservation and environmental protection as well as protecting the safe operation of the battery module 20. Among them, the second switch unit 21 includes a switch, a diode or a field effect transistor, etc.

[0065] The charging module 10 is connected to the elevator drive device 2. When the battery module 20 fails, the control module 30 controls the battery module 20 to stop supplying power to the elevator drive device 2 by controlling the second switch unit 21. At this time, the electric energy provided by the external power supply 40 to the charging module 10 is directly output to the elevator drive device 2.

[0066] Specifically, during the operation of the power supply control system 1 , the control module 30 determines the working state of the elevator drive device 2 by detecting whether the idle time of the elevator drive device 2 is greater than a preset threshold.

[0067] Optionally, when the control module 30 detects that the idle time of the elevator drive device 2 is greater than a preset threshold, the control module 30 determines that the elevator drive device 2 is in an idle state. Based on the fact that the elevator drive device 2 is in the idle state, the control module 30 detects whether the external power supply 40 has stopped supplying power to the charging module 10 by detecting the charging module 10. When the control module 30 detects that the first switch unit 50 is turned on, the control module 30 detects that the external power supply 40 has not stopped supplying power to the charging module 10. In this case, the control module 30 detects the power level of the battery module 20. When the control module 30 detects that the first switch unit 50 is turned off, the control module 30 detects that the external power supply 40 has stopped supplying power to the charging module 10. In this case, the control module 30 controls the second switch unit 21 to stop the battery module 20 from supplying power to the elevator drive device 2 in the idle state, thereby reducing power loss of the battery module 20 when the elevator drive device 2 is in the idle state, thereby saving energy for the battery module 20 and extending the life of the battery module 20.

[0068] Furthermore, when the elevator drive device 2 is in an idle state and the external power supply 40 has not stopped supplying power to the charging module 10, the control module 30 detects whether the charge level of the battery module 20 is greater than a first preset threshold value of the battery module 20. When the control module 30 detects that the charge level of the battery module 20 is greater than the first preset threshold value of the battery module 20, the control module 30 controls the second switch unit 21 to disconnect the charging module 10 from the battery module 20, causing the charging module 10 to stop charging the battery module 20. At this point, the battery module 20 supplies power to the elevator drive device 2 in the idle state via the second switch unit 21 to cover the daily power consumption of the elevator drive device 2 in the idle state. When the control module 30 detects that the charge level of the battery module 20 is less than the first preset threshold value of the battery module 20, the control module 30 controls the second switch unit 21 to connect the charging module 10 to the battery module 20, causing the charging module 10 to charge the battery module 20, and at this point, the battery module 20 continues to supply power to the elevator drive device 2 in the idle state.

[0069] Furthermore, the control module 30 detects whether the charge level of the battery module 20 is less than a second preset threshold value of the battery module 20. When the control module 30 detects that the charge level of the battery module 20 is less than the second preset threshold value of the battery module 20, the control module 30 controls the second switch unit 21 to connect the charging module 10 to the battery module 20, so that the charging module 10 charges the battery module 20. When the control module 30 detects that the charge level of the battery module 20 is greater than the second preset threshold value of the battery module 20, the control module 30 controls the second switch unit 21 to disconnect the charging module 10 from the battery module 20, so that the charging module 10 stops charging the battery module 20.

[0070] It should be noted that the power level of the battery module 20 is detected by the control module 30, and the power level of the battery module 20 is controlled to be between the first preset threshold and the second preset threshold, that is, the power level of the battery module 20 is controlled to be at the optimal level, which can prevent the battery module 20 from being overcharged and over-discharged, and at the same time play a role in energy saving, environmental protection and protection of the safe operation of the battery module 20.

[0071] Optionally, when the control module 30 detects that the idle time of the elevator drive device 2 is less than a preset threshold, the control module 30 determines that the elevator drive device 2 is in a normal operating state. The control module 30 detects whether the battery module 20 is operating normally based on the elevator drive device 2 being in a normal operating state. When the control module 30 detects that the battery module 20 is operating normally, the control module 30 controls the second switch unit 21 to ensure that the battery module 20 continues to supply power to the elevator drive device 2 in a normal operating state. At the same time, the control module 30 controls the second switch unit 21 to connect the charging module 10 to the battery module 20, so that the charging module 10 charges the battery module 20. When the control module 30 detects that the battery module 20 is faulty, the control module 30 controls the second switch unit 21 to disconnect the charging module 10 from the battery module 20, so that the charging module 10 stops charging the faulty battery module 20. At this point, the charging module 10 is connected to the elevator drive device 2, and the power provided to the charging module 10 by the external power supply 40 is directly output to the elevator drive device 2.

[0072] Different from the prior art, the power supply control system 1 of this embodiment is applied to an elevator drive device 2, and includes a charging module 10, a battery module 20 and a control module 30, wherein: the charging module 10 is respectively connected to an external power supply 40 and a battery module 20 for charging the battery module 20; the battery module 20 is connected to the elevator drive device 2 for powering the elevator drive device 2; the control module 30 is respectively connected to the elevator drive device 2, the charging module 10 and the battery module 20; wherein the control module 30 is used to determine whether the idle time of the elevator drive device 2 is greater than a preset threshold; if so, based on the fact that the elevator drive device 2 is in an idle state, the control module 30 further determines whether the external power supply 40 supplies power to the charging module 10; if the control module 30 determines that the external power supply 40 has not stopped supplying power to the charging module 10, it detects the power level of the battery module 20, and controls the charging module 10 to charge the battery module 20 according to the power level of the battery module 20. Through the above method, the battery module 20 is used to directly power the elevator drive device 2, solving the power loss caused by setting an emergency power supply in the elevator power supply control system 1, while reducing the volume and manufacturing cost of the system. By using the control module 30 to manage the power of the battery module 20 when the elevator drive device 2 is in an idle state, the power of the battery module 20 is controlled to be at the optimal power level, which can prevent the battery module 20 from overcharging and over-discharging, and at the same time play a role in energy saving, environmental protection and protection of the safe operation of the battery module 20.

[0073] See also Figure 5 , Figure 5 Schematic diagram of the structure of the first embodiment of the elevator system 3 of the present invention. Figure 5 As shown, the elevator system 3 includes a power supply control system 1 and an elevator drive device 2. The power supply control system 1 is connected to the elevator drive device 2 and is used to control the elevator drive device 2. The working principle of the power supply control system 1 is the same as that described in the above embodiment and will not be repeated here.

[0074] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A power supply control method, characterized in that: The method is performed by a power supply control system, which includes a charging module and a battery module and is applied to an elevator drive device. The control method includes: Determining whether the idle time of the elevator drive device is greater than a preset threshold; If so, the elevator drive device is in an idle state, and further determining whether an external power source is supplying power to the charging module; If it is determined that the external power supply has not stopped supplying power to the charging module, detecting the power level of the battery module, and controlling the charging module to charge the battery module according to the power level of the battery module; The step of detecting the power level of the battery module and controlling the charging module to charge the battery module according to the power level of the battery module includes: controlling the charging module to charge the battery module, and determining whether the power level of the battery module is greater than a first preset threshold value of the power level of the battery module; If so, controlling the charging module to stop charging the battery module, and further controlling the battery module to continue to supply power to the elevator drive device in an idle state; Determining whether the power level of the battery module is less than a second preset threshold value of the power level of the battery module; If so, the charging module is controlled to charge the battery module.

2. The control method according to claim 1, characterized in that: The step of detecting the power level of the battery module and controlling the charging module to charge the battery module according to the power level of the battery module further includes: If it is determined that the power level of the battery module is less than a first preset threshold value of the power level of the battery module, controlling the charging module to charge the battery module, and further controlling the battery module to continuously supply power to the elevator drive device in an idle state; If it is determined that the power level of the battery module is greater than a second preset threshold of the power level of the battery module, the charging module is controlled to stop charging the battery module.

3. The control method according to claim 1, wherein: The control method further includes: If it is determined that the external power supply stops supplying power to the charging module, the battery module is controlled to stop supplying power to the elevator drive device, so as to control the power supply control system to be in an energy-saving state.

4. The control method according to claim 1, wherein: After determining that the external power supply has not stopped supplying power to the charging module, the control method further includes: Determining whether the battery module is operating normally; If it is determined that the battery module is operating abnormally, the charging module is controlled to supply power to the elevator drive device.

5. A power supply control system, characterized in that: The power supply control system is used to implement the power supply control method according to any one of claims 1 to 4, and includes a charging module, a battery module, and a control module, wherein: The charging module is connected to the external power source and the battery module respectively, and is used to charge the battery module; The battery module is connected to the elevator drive device and is used to supply power to the elevator drive device; The control module is connected to the elevator drive device, the charging module and the battery module respectively; Wherein, the control module is used to determine whether the idle time of the elevator drive device is greater than a preset threshold; If so, based on the elevator drive device being in an idle state, the control module further determines whether the external power supply is supplying power to the charging module; If the control module determines that the external power supply has not stopped supplying power to the charging module, it detects the power level of the battery module and controls the charging module to charge the battery module according to the power level of the battery module.

6. The control system according to claim 5, characterized in that: If the control module determines that the external power supply stops supplying power to the charging module, the control module controls the battery module to stop supplying power to the elevator drive device, so as to control the power supply control system to be in an energy-saving state.

7. The control system according to claim 5, characterized in that: The control module is used to determine whether the battery module is working normally; If it is determined that the battery module is operating abnormally, the control module controls the charging module to supply power to the elevator drive device.

8. The control system according to claim 5, characterized in that: The power supply control system further includes: a first switch unit, connected to the external power supply and the charging module respectively; The second switch unit is connected to the battery module, the charging module and the elevator driving device respectively.

9. An elevator system, characterized in that: It includes a power supply control system and an elevator drive device, wherein the power supply control system is connected to the elevator drive device and is used to control the elevator drive device. The power supply control system is the power supply control system according to any one of claims 5 to 8.

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