Elevator power supply control method and system

Abstract

The embodiments of this specification mainly relate to the field of elevator power supply control technology, specifically an elevator power supply control method and system. An elevator power supply control method includes the following steps: L1. Obtaining initial power supply information, and obtaining the power value of the first battery module and the power value of the second battery module. When the power value of the first battery module is greater than the power value of the second battery module, setting the working state of the first battery module to the power supply state and the working state of the second battery module to the charging state; otherwise, setting the working state of the first battery module to the charging state and the working state of the second battery module to the power supply state; L2. Obtaining state transition information and determining the generating entity of the state transition information. The elevator power supply control method and system of the embodiments of this specification improve the utilization rate of the backup power supply and can extend the service life of the battery module; the backup power supply is easy to use and operate; and the backup power supply has high reliability.

Description

Technical Field

[0001] The embodiments of this specification mainly relate to the technical field of elevator power supply control, and specifically to an elevator power supply control method and system. Background Art

[0002] Elevators typically have a backup power supply. When the power grid goes out, the backup power supply can continue to power the elevator, allowing it to operate for a period of time, thus providing emergency assistance. However, since power outages are sporadic, the backup power supply is idle most of the time, sometimes even unused for extended periods. While staff regularly charge and discharge the backup power supply, this can still lead to low utilization rates and a shortened service life. Furthermore, if the intervals between charging and discharging operations are long, the backup power supply may run low, rendering it ineffective during a power outage. If the intervals between charging and discharging operations are short, the workload increases and the operation becomes more complex. Summary of the Invention

[0003] The embodiments of this specification address the problems existing in the prior art and propose an elevator power supply control method and system.

[0004] In a first aspect, an embodiment of this specification provides an elevator power supply control method, comprising the following steps:

[0005] L1. Obtain initial power supply information, and obtain the power value of the first battery module and the power value of the second battery module. When the power value of the first battery module is greater than the power value of the second battery module, set the working state of the first battery module to the power supply state and the working state of the second battery module to the charging state; otherwise, set the working state of the first battery module to the charging state and the working state of the second battery module to the power supply state;

[0006] L2. Obtain state transition information and determine the entity that generates the state transition information;

[0007] When the state transition information is generated by the first battery module, the working state of the first battery module is set to the charging state, and the working state of the second battery module is set to the power supply state; when the state transition information is generated by the second battery module, the working state of the second battery module is set to the charging state, and the working state of the first battery module is set to the power supply state;

[0008] L3. When the first battery module is in the power supply state, control the first battery module to supply power to the selected load until the charge level of the first battery module is less than or equal to a first charge threshold. When the second battery module is in the charging state, control the second charging module to charge the second battery module until the charge level of the second battery module is greater than or equal to a second charge threshold. When the charge level of the first battery module is less than or equal to the first charge threshold, the first battery module generates state transition information.

[0009] When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power value of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power value of the first battery module is greater than or equal to the second power threshold; when the power value of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information;

[0010] L4. Obtain power outage information; when the power outage information is obtained, control the first battery module or the second battery module in the power supply state to supply power to the elevator electrical equipment.

[0011] As an advantage, the method further comprises the following steps:

[0012] L5. When the first battery module is in a charging state, it is determined whether the first battery module is abnormal. When the first battery module is abnormal, an abnormal alarm message of the first battery is generated and sent;

[0013] The determining whether the first battery module is abnormal is specifically as follows: obtaining a charging abnormality value of the first battery module, comparing the charging abnormality value with a charging abnormality threshold, and determining that the first battery module is abnormal when the charging abnormality value is greater than the charging abnormality threshold; otherwise, determining that the first battery module is normal;

[0014] The step of obtaining the abnormal charging value of the first battery module specifically includes the following steps:

[0015] L51. Obtaining a first charging data value, specifically comprising the following steps:

[0016] L511. Get the basic charging duration value;

[0017] L512. Obtain the current charging duration value, specifically: obtain the actual charging duration value when the power value of the first battery module is charged from the first power threshold to the second power threshold, compare the actual charging duration value with the charging duration threshold, if the actual charging duration value is less than or equal to the charging duration threshold, then use the actual charging duration value as the current charging duration value; if the actual charging duration value is greater than the charging duration threshold, then use the charging duration threshold as the current charging duration value; the charging duration threshold is twice the basic charging duration value;

[0018] If the current charging duration value cannot be obtained, exit L5;

[0019] L513. The first charging data value is calculated based on the basic charging duration value and the current charging duration value, specifically: calculating the absolute difference between the current charging duration value and the basic charging duration value; calculating the absolute difference between the duration and the basic charging duration value as a percentage; and using the duration percentage value as the first charging data value;

[0020] L52. Obtaining a second charging data value, specifically comprising the following steps:

[0021] L521 obtains the ambient temperature value, and determines the basic charging temperature value for charging the first battery module to the second power threshold according to the ambient temperature value;

[0022] L522 obtains the first battery module when the charging temperature value, specifically: determine the time point to obtain the value of the charging duration, the corresponding time point detection to obtain the first battery module when the charging temperature value;

[0023] L523. The second charging data value is calculated based on the basic charging temperature value and the current charging temperature value, specifically: calculating the absolute temperature difference between the current charging temperature value and the basic charging temperature value; determining the maximum absolute temperature difference; calculating the temperature percentage value of the absolute temperature difference and the maximum absolute temperature difference; and using the temperature percentage value as the second charging data value;

[0024] L53. The charging abnormality value of the first battery module is calculated based on the first charging data value and the second charging data value;

[0025] L6. When the second battery module is in a charging state, determine whether the second battery module is abnormal. If the second battery module is abnormal, generate and send a second battery abnormality alarm message.

[0026] Preferably, in L53, calculating the charging abnormality value of the first battery module based on the first charging data value and the second charging data value specifically includes the following steps:

[0027] L531. Determining a first charging abnormality value based on the first charging data value, specifically: comparing the first charging data value with a first data threshold value 1 and a first data threshold value 2; when the first charging data value is less than or equal to the first data threshold value 1, using the first score as the first charging abnormality value; when the first charging data value is greater than the first data threshold value 1 and less than the first data threshold value 2, using the second score as the first charging abnormality value; when the first charging data value is greater than or equal to the first data threshold value 2, using the third score as the first charging abnormality value; wherein the first score is less than the second score, and the second score is less than the third score;

[0028] L532. Determine a second charging abnormality value based on the second charging data value, specifically: compare the second charging data value with the second data threshold value 1 and the second data threshold value 2; when the second charging data value is less than or equal to the second data threshold value 1, use the first score as the second charging abnormality value; when the second charging data value is greater than the second data threshold value 1 and less than the second data threshold value 2, use the second score as the second charging abnormality value; when the second charging data value is greater than or equal to the second data threshold value 2, use the third score as the second charging abnormality value; the charging abnormality threshold value is twice the second score;

[0029] L533. Sum the first charging abnormality value and the second charging abnormality value to obtain a charging abnormality value.

[0030] Preferably, L53 further comprises the following steps:

[0031] L534 obtains multiple data points based on multiple other battery modules; each data point includes an X value and a Y value, the X value is the first charging data value of the battery module, the Y value is the mapping value corresponding to the normal or abnormal battery module;

[0032] L535. Add all data points to the rectangular coordinate system, obtain the first and second classification lines perpendicular to the X-axis, use the X value corresponding to the first classification line as the first data threshold of one, and use the X value corresponding to the second classification line as the second data threshold of one.

[0033] Preferably, L3 further includes:

[0034] If the first battery module is determined to be abnormal, the first battery module sets its working state to the abnormal power supply state when switching the working state; if the second battery module is determined to be abnormal, the second battery module sets its working state to the abnormal power supply state when switching the working state;

[0035] If the working state of the first battery module is an abnormal power supply state, the first battery module is stopped from supplying power and the power grid is controlled to supply power to the selected load; if the working state of the second battery module is an abnormal power supply state, the second battery module is stopped from supplying power and the power grid is controlled to supply power to the selected load;

[0036] L4 also includes:

[0037] When power outage information is obtained, if the first battery module is in an abnormal power supply state, the second battery module is controlled to supply power to the elevator electrical equipment; when power outage information is obtained, if the second battery module is in an abnormal power supply state, the first battery module is controlled to supply power to the elevator electrical equipment.

[0038] In a second aspect, an embodiment of this specification provides an elevator power supply control system, including:

[0039] An initial power supply information acquisition module, used to acquire initial power supply information;

[0040] A power value acquisition module, configured to acquire the power value of the first battery module and the power value of the second battery module;

[0041] a first operating state setting module, configured to set the operating state of the first battery module to a power supply state and the operating state of the second battery module to a charging state when the power level of the first battery module is greater than the power level of the second battery module; otherwise, set the operating state of the first battery module to a charging state and the operating state of the second battery module to a power supply state;

[0042] A state transition information acquisition module is used to obtain state transition information and determine the subject that generates the state transition information;

[0043] a second operating state setting module, configured to, when the state transition information is generated by the first battery module, set the operating state of the first battery module to the charging state and the operating state of the second battery module to the power supply state; and, when the state transition information is generated by the second battery module, set the operating state of the second battery module to the charging state and the operating state of the first battery module to the power supply state;

[0044] a first power supply control module, configured to, when the working state of the first battery module is a power supply state, control the first battery module to supply power to a selected load until the power level of the first battery module is less than or equal to a first power threshold; and, when the working state of the second battery module is a charging state, control the second charging module to charge the second battery module until the power level of the second battery module is greater than or equal to a second power threshold; and, when the power level of the first battery module is less than or equal to the first power threshold, generate state transition information for the first battery module;

[0045] When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power value of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power value of the first battery module is greater than or equal to the second power threshold; when the power value of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information;

[0046] A power outage information acquisition module, used to obtain power outage information;

[0047] The second power supply control module is used to control the first battery module or the second battery module in the power supply state to supply power to the elevator electrical equipment when the power outage information is obtained.

[0048] As an advantage, it also includes:

[0049] a first battery module abnormality determination module, configured to determine whether the first battery module is abnormal when the first battery module is in a charging state;

[0050] A first battery abnormality alarm information generating and sending module is used to generate and send first battery abnormality alarm information when the first battery module is abnormal;

[0051] The first battery module abnormality determination module includes:

[0052] a charging abnormality value acquiring unit, configured to acquire a charging abnormality value of the first battery module;

[0053] a first battery module abnormality determination unit, configured to compare the charging abnormality value with a charging abnormality threshold value, and determine that the first battery module is abnormal when the charging abnormality value is greater than the charging abnormality threshold value; otherwise, determine that the first battery module is normal;

[0054] The charging abnormality value acquisition unit includes:

[0055] The first charging data value obtaining subunit is configured to obtain the first charging data value, which specifically includes:

[0056] A basic charging duration value obtaining subunit is used to obtain a basic charging duration value;

[0057] The sub-unit for obtaining the current charging duration value is used to obtain the current charging duration value, specifically: obtaining the actual charging duration value of the current charging of the first battery module when the power value is charged from the first power threshold to the second power threshold, comparing the actual charging duration value with the charging duration threshold, if the actual charging duration value is less than or equal to the charging duration threshold, then using the actual charging duration value as the current charging duration value; if the actual charging duration value is greater than the charging duration threshold, then using the charging duration threshold as the current charging duration value; the charging duration threshold is twice the basic charging duration value;

[0058] The first charging data value calculation subunit is configured to calculate the first charging data value based on the basic charging duration value and the current charging duration value, specifically by: calculating the absolute difference between the current charging duration value and the basic charging duration value; calculating the duration percentage between the absolute difference and the basic charging duration value; and using the duration percentage value as the first charging data value;

[0059] The second charging data value obtaining subunit is configured to obtain the second charging data value, which specifically includes:

[0060] a basic charging temperature value determining subunit, configured to obtain an ambient temperature value and determine, based on the ambient temperature value, a basic charging temperature value for charging the first battery module to a second power threshold;

[0061] The current charging temperature value obtaining sub-unit is used to obtain the current charging temperature value of the first battery module, specifically by determining the time point at which the current charging duration value is obtained, and detecting the current charging temperature value of the first battery module at the corresponding time point;

[0062] a second charging data value calculation subunit, configured to calculate the second charging data value based on the basic charging temperature value and the current charging temperature value, specifically by: calculating the absolute temperature difference between the current charging temperature value and the basic charging temperature value; determining the maximum absolute temperature difference; calculating the temperature percentage value of the absolute temperature difference to the maximum absolute temperature difference; and using the temperature percentage value as the second charging data value;

[0063] a charging abnormality value calculation subunit, configured to calculate a charging abnormality value of the first battery module based on the first charging data value and the second charging data value;

[0064] a second battery module abnormality determination module, configured to determine whether the second battery module is abnormal when the second battery module is in a charging state;

[0065] The second battery abnormality alarm information generating and sending module is used to generate and send the second battery abnormality alarm information when the second battery module is abnormal.

[0066] Preferably, the charging abnormality value calculation subunit includes:

[0067] The first charging abnormality value determination subunit is configured to determine the first charging abnormality value based on the first charging data value, specifically by comparing the first charging data value with a first data threshold value 1 and a first data threshold value 2; when the first charging data value is less than or equal to the first data threshold value 1, using the first score as the first charging abnormality value; when the first charging data value is greater than the first data threshold value 1 and less than the first data threshold value 2, using the second score as the first charging abnormality value; when the first charging data value is greater than or equal to the first data threshold value 2, using the third score as the first charging abnormality value; wherein the first score is less than the second score, and the second score is less than the third score;

[0068] The second charging abnormality value determination subunit is configured to determine the second charging abnormality value based on the second charging data value, specifically by comparing the second charging data value with a second data threshold value 1 and a second data threshold value 2; when the second charging data value is less than or equal to the second data threshold value 1, using the first score as the second charging abnormality value; when the second charging data value is greater than the second data threshold value 1 and less than the second data threshold value 2, using the second score as the second charging abnormality value; when the second charging data value is greater than or equal to the second data threshold value 2, using the third score as the second charging abnormality value; the charging abnormality threshold value is twice the second score;

[0069] The charging abnormality value calculation subunit is configured to obtain a charging abnormality value by summing the first charging abnormality value and the second charging abnormality value.

[0070] Preferably, the charging abnormality value calculation subunit further includes:

[0071] a data point acquisition subunit, configured to acquire a plurality of data points based on a plurality of other battery modules; each data point includes an X value and a Y value, wherein the X value is a first charging data value of the battery module, and the Y value is a mapping value of whether the corresponding battery module is normal or abnormal;

[0072] The data threshold determination subunit is used to add all data points to the rectangular coordinate system, obtain a first classification line and a second classification line perpendicular to the X-axis, and use the X value corresponding to the first classification line as the first data threshold one and the X value corresponding to the second classification line as the second data threshold one.

[0073] Preferably, the second working state setting module includes:

[0074] an abnormal power supply state setting unit, configured to set the operating state of the first battery module to the abnormal power supply state when switching the operating state if the first battery module is determined to be abnormal; and to set the operating state of the second battery module to the abnormal power supply state when switching the operating state if the second battery module is determined to be abnormal;

[0075] The first power supply control module includes:

[0076] Abnormal power supply control unit 1, for stopping the first battery module from supplying power and controlling the power grid to supply power to the selected load if the working state of the first battery module is an abnormal power supply state; and for stopping the second battery module from supplying power and controlling the power grid to supply power to the selected load if the working state of the second battery module is an abnormal power supply state;

[0077] The second power supply control module includes:

[0078] Abnormal power supply control unit 2 is used to control the second battery module to supply power to the elevator electrical equipment when the power outage information is obtained and the first battery module is in an abnormal power supply state; when the power outage information is obtained and the second battery module is in an abnormal power supply state, the first battery module is controlled to supply power to the elevator electrical equipment.

[0079] Beneficial effects

[0080] In the elevator power supply control method and system of the embodiments of the present specification, after charging, the first battery module / second battery module of the backup power supply only needs to wait for the second battery module / first battery module to complete discharging before it can perform the discharge operation, thereby shortening the idle time of the first battery module / second battery module, improving the utilization rate of the backup power supply, and thus extending the service life of the battery module; the alternating charging and discharging of the first battery module and the second battery module are automatically performed through state transition information, without requiring manual operation by staff, making the backup power supply easy to use and not increasing the workload of staff; the power in the first battery module and the second battery module is supplied to the electrical equipment of the elevator, rather than being discharged and consumed by itself, so no electrical energy is wasted; because the first battery module and the second battery module are alternately charged and discharged at appropriate cycles, there will be sufficient power for the elevator to continue operating for a period of time when the power grid is cut off, making the use of the backup power supply highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 A schematic diagram of the structure of the backup power supply system provided in the embodiments of this specification;

[0082] Figure 2 This is a schematic diagram of the structure of the elevator power supply control system provided in the embodiments of this specification. DETAILED DESCRIPTION

[0083] Hereinafter, embodiments of the present specification will be described in more detail with reference to the accompanying drawings.

[0084] Example 1:

[0085] An elevator power supply control method is implemented by a backup power supply system, such as Figure 1As shown, the backup power supply system includes: a first battery module, a first charging module electrically connected to the first battery module, a second battery module, a first charging module electrically connected to the first battery module, a second charging module electrically connected to the second battery module, a power grid electrically connected to the first and second charging modules, a selected load electrically connected to the first and second battery modules, and a controller electrically connected to the first charging module, the second battery module, the first charging module, the second charging module, the power grid, and the selected load. The selected load can be one, two, or more of the elevator electrical equipment. For example, in this embodiment, the selected load is a lighting fixture among the elevator electrical equipment.

[0086] The elevator power supply control method of this embodiment specifically includes steps L1 to L4. This embodiment does not limit the order of steps L1 to L4:

[0087] L1. Obtain initial power supply information, and obtain the power value of the first battery module and the power value of the second battery module. When the power value of the first battery module is greater than the power value of the second battery module, set the working state of the first battery module to the power supply state and the working state of the second battery module to the charging state; otherwise, set the working state of the first battery module to the charging state and the working state of the second battery module to the power supply state.

[0088] After the staff connects the first battery module and the second battery module to the backup power supply system, the controller can obtain information that the first battery module and the second battery module are installed in place, and the controller can directly use this information as the initial power supply information. Alternatively, an initial power supply information generation button can be installed on the controller. After the staff connects the first battery module and the second battery module, they can press the initial power supply information generation button to enable the controller to obtain the initial power supply information. This embodiment assumes that an initial power supply information generation button is installed.

[0089] Specifically, after the first and second battery modules are installed for the first time, the operator simply presses the button to generate the initial power supply information, and step L1 is executed. Alternatively, if the first or second battery module fails and is replaced with a new one, the operator needs to press the button to generate the initial power supply information, and step L1 is executed again.

[0090] L3. When the first battery module is in the power supply state, control the first battery module to supply power to the selected load until the charge level of the first battery module is less than or equal to a first charge threshold. When the second battery module is in the charging state, control the second charging module to charge the second battery module until the charge level of the second battery module is greater than or equal to a second charge threshold. When the charge level of the first battery module is less than or equal to the first charge threshold, the first battery module generates state transition information.

[0091] When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power value of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power value of the first battery module is greater than or equal to the second power threshold; when the power value of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information.

[0092] Assume that in step L1, the first battery module is in the power supply state (assuming the initial charge level of the second battery module is 80%), and the second battery module is in the charging state (assuming the initial charge level of the second battery module is 60%). The first charge threshold is 10%, and the second charge threshold is 95%.

[0093] At this point, the first battery module is used to power the lighting. When the battery level in the first battery module reaches 10%, the first battery module generates a state transition message. Assume that the first battery module (with the battery level dropping from 80% to 10%) can continuously power the lighting for 30 hours.

[0094] At the same time, the second battery module is charging from the grid. When the second battery module's charge level reaches 95%, charging is complete. After charging is complete, the second battery module is still in the charging state. Assuming it takes 40 minutes for the second battery module (charge level increases from 60% to 95%) to charge, the remaining time is in the charging complete state, which is also considered the charging state.

[0095] When the power level of the first battery module is equal to 10%, the first battery module generates state transition information and then enters step L2.

[0096] L2. Obtain state transition information and determine the entity that generates the state transition information;

[0097] When the main body generating the state transition information is the first battery module, the working state of the first battery module is set to the charging state, and the working state of the second battery module is set to the power supply state; when the main body generating the state transition information is the second battery module, the working state of the second battery module is set to the charging state, and the working state of the first battery module is set to the power supply state.

[0098] At this time, since the main body generating the state transition information is the first battery module, the working state of the first battery module is set to the charging state, and the working state of the second battery module is set to the power supply state, and then step L3 is re-entered.

[0099] L3. When the first battery module is in the power supply state, control the first battery module to supply power to the selected load until the charge level of the first battery module is less than or equal to a first charge threshold. When the second battery module is in the charging state, control the second charging module to charge the second battery module until the charge level of the second battery module is greater than or equal to a second charge threshold. When the charge level of the first battery module is less than or equal to the first charge threshold, the first battery module generates state transition information.

[0100] When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power value of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power value of the first battery module is greater than or equal to the second power threshold; when the power value of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information.

[0101] At this point, the second battery module is used to power the lamp. When the battery level in the second battery module reaches 10%, the second battery module generates a state transition message. Assuming the battery level in the second battery module drops from 95% to 10%, the lamp can continue to power for 36 hours.

[0102] At the same time, the first battery module is charging via the power grid. When the charge level in the first battery module reaches 95%, charging of the first battery module is complete. After charging is complete, the first battery module is still in the charging state. Assuming that it takes 100 minutes to charge the first battery module (charge level increases from 10% to 95%), the remaining time is in the charging complete state, which is also considered the charging state.

[0103] When the power level of the second battery module is equal to 10%, the second battery module generates state transition information, then enters step L2, and continuously repeats steps L2 and L3.

[0104] L4. Obtain power outage information; when the power outage information is obtained, control the first battery module or the second battery module in the power supply state to supply power to the elevator electrical equipment.

[0105] During steps L2 and L3, the power grid may experience a power outage. Assume that at some point, the power grid loses power. At this point, assume that the first battery module is in the power supply state and the second battery module is in the charging state. Then, in addition to the lights continuing to be powered by the first battery module, other elevator electrical equipment is also powered by the first battery module. When the charge level of the first battery module reaches 10%, the operating state of the second battery module changes to the power supply state, and the second battery module can continue to power the lights and other elevator electrical equipment until the charge level of the second battery module also reaches 10%. In short, after the power grid loses power, the first and second battery modules will sequentially supply power to the elevator electrical equipment, allowing the elevator to continue operating for a period of time.

[0106] In this embodiment of the elevator power supply control method, after charging, the first battery module (or second battery module) only needs to wait for the second battery module (or first battery module) to finish discharging before discharging. This means that the idle time of the first battery module (or second battery module) is relatively short, preventing prolonged idle time, thereby extending the battery module's service life. Furthermore, the alternating charge and discharge of the first and second battery modules is automatically performed based on state transition information, eliminating the need for manual operation by staff and reducing workload. Furthermore, the power stored in the first and second battery modules is used to supply the elevator's electrical equipment, rather than being discharged and consumed on its own, thus avoiding energy waste. Finally, because the first and second battery modules are alternately charged and discharged at appropriate intervals, sufficient power remains available to maintain elevator operation for a period of time in the event of a power outage.

[0107] Furthermore, the elevator power supply control method of this embodiment further includes steps L5 and L6. This embodiment does not limit the order of steps L5 and L6:

[0108] L5. When the first battery module is in a charging state, determine whether the first battery module is abnormal. When the first battery module is abnormal, generate and send a first battery abnormality alarm message.

[0109] L6. When the second battery module is in a charging state, determine whether the second battery module is abnormal. If the second battery module is abnormal, generate and send a second battery abnormality alarm message. The method and steps for determining whether the second battery module is abnormal in step L6 are the same as the method and steps for determining whether the first battery module is abnormal in step L5.

[0110] In step L5, it is determined whether the first battery module is abnormal, specifically: obtaining the charging abnormality value of the first battery module, comparing the charging abnormality value with the charging abnormality threshold, when the charging abnormality value is greater than the charging abnormality threshold, the first battery module is determined to be abnormal; otherwise, the first battery module is determined to be normal.

[0111] The step of obtaining the abnormal charging value of the first battery module specifically includes steps L51 and L52. This embodiment does not limit the order of steps L51 and L52.

[0112] L51. Obtaining a first charging data value, specifically comprising the following steps:

[0113] L511. Get the basic charging duration value.

[0114] You can first obtain a certain number of new battery modules of the same model, conduct charging experiments on these new battery modules, and obtain the charging time it takes for these new battery modules to charge from a first power threshold (i.e., 10%) to a second power threshold (i.e., 95%). Then, calculate (for example, average) these charging times to obtain a basic charging time value.

[0115] Assume that the basic charging time value in this embodiment is 100 minutes.

[0116] L512. Obtain the current charging duration value, specifically: obtain the current actual charging duration value when the power value of the first battery module is charged from the first power threshold to the second power threshold, compare the current actual charging duration value with the charging duration threshold, if the current actual charging duration value is less than or equal to the charging duration threshold, then use the current actual charging duration value as the current charging duration value; if the current actual charging duration value is greater than the charging duration threshold, then use the charging duration threshold as the current charging duration value; the charging duration threshold is twice the basic charging duration value.

[0117] When the basic charging time value is 100 minutes, the charging time threshold is 200 minutes.

[0118] Assume that it takes 90 minutes to charge the first battery module from 10% to 95% of its capacity, so the actual charging duration is 90 minutes. Since the actual charging duration (90 minutes) is less than the charging duration threshold (200 minutes), the actual charging duration (90 minutes) is used as the current charging duration, resulting in a total charging duration of 90 minutes.

[0119] Assume that it takes 120 minutes to charge the first battery module from 10% to 95% of its capacity, so the actual charging duration is 120 minutes. Since the actual charging duration (120 minutes) is less than the charging duration threshold (200 minutes), the actual charging duration (120 minutes) is used as the current charging duration, resulting in a total charging duration of 120 minutes.

[0120] Assume that the power value of the first battery module is charged from 10% to the charging time threshold (i.e., 200 minutes) but has not yet reached 95%, indicating that the actual charging time value of the first battery module is greater than the charging time threshold (i.e., 200 minutes). In this case, the charging time threshold (i.e., 200 minutes) is used as the charging time value, that is, the charging time value is 200 minutes.

[0121] Assuming that the power value of the first battery module is greater than the first power threshold at the beginning of charging (for example, after step L1, step L3 is entered, then the initial power value of the first battery module will usually be greater than the first power threshold), then the actual charging duration value of the first battery module when the power value is charged from the first power threshold to the second power threshold cannot be obtained, and thus the charging duration value cannot be obtained. At this time, step L5 is directly exited, that is, the charging of the first battery module does not determine whether the first battery module is abnormal.

[0122] Assume that the charging time in this embodiment is 90 minutes.

[0123] L513. The first charging data value is calculated based on the basic charging duration value and the current charging duration value, specifically: calculating the absolute difference between the current charging duration value and the basic charging duration value; calculating the duration percentage value between the absolute difference and the basic charging duration value; and using the duration percentage value as the first charging data value.

[0124] When the absolute difference between the first charging time value (i.e. 90 minutes) and the basic charging time value (i.e. 100 minutes) is subtracted, the absolute difference (i.e. 10 minutes) is divided by the basic charging time value (i.e. 100 minutes), and the percentage value is 10, the first charging data value is 10.

[0125] L52. Obtaining a second charging data value, specifically comprising the following steps:

[0126] L521. Obtain the ambient temperature value, and determine the basic charging temperature value for charging the first battery module to a second power threshold based on the ambient temperature value.

[0127] First, a certain number of brand-new battery modules of the same model can be obtained and charged in a charging experiment. The charging temperatures of the first battery modules at the corresponding time points when the charge levels of these brand-new battery modules are charged from a first charge threshold (i.e., 10%) to a second charge threshold (i.e., 95%) under different ambient temperatures can be obtained. The charging temperatures of these first battery modules at the same ambient temperature can then be calculated (e.g., averaged) to obtain the base charging temperature values ​​of the first battery modules at the same temperature. For example, when the ambient temperature is 25°C, the base charging temperature value of the first battery module is 31°C. When the ambient temperature is 30°C, the base charging temperature value of the first battery module is 39°C.

[0128] In summary, this step can be used to determine the approximate battery temperature when the normal first battery module is charged to a power level of 95% under the corresponding ambient temperature.

[0129] Assuming that the ambient temperature of this embodiment is 25° C., the basic charging temperature value for charging the first battery module to the second power threshold is 31° C.

[0130] L522. Obtain the current charging temperature value of the first battery module, specifically: determine the time point for obtaining the current charging duration value, and detect the current charging temperature value of the first battery module at the corresponding time point.

[0131] Assuming that during the current charging process, the first battery module obtains the current charging duration value at XX year XX month XX hour XX minute XX second, then the current charging temperature value of the first battery module is detected at XX year XX month XX hour XX minute XX second.

[0132] For example, the charging time for the first battery module to charge from 10% to 95% is 130 minutes, so the actual charging time value is 130 minutes, that is, the charging time value is obtained at time point a when the power value of the first battery module is charged to 95%. At this time, the charging temperature value of the first battery module is detected at time point a.

[0133] For another example, the power value of the first battery module is charged from 10% to the charging time threshold (i.e., 200 minutes) but has not yet reached 95%, indicating that the actual charging time value of the first battery module is greater than the charging time threshold (i.e., 200 minutes). At this time (assuming it is time point b), the charging time threshold is used as the current charging time value, that is, the current charging time value is obtained at time point b. At this time, the current charging temperature value of the first battery module is detected at time point b.

[0134] If step L512 fails to obtain the current charging duration value, step L5 will be directly exited at that time, and thus step L522 will not be performed.

[0135] Assume that the charging temperature value obtained in this embodiment is 33° C.

[0136] L523. The second charging data value is calculated based on the basic charging temperature value and the current charging temperature value, specifically: calculating the absolute temperature difference between the current charging temperature value and the basic charging temperature value; determining the maximum absolute temperature difference; calculating the temperature percentage value between the absolute temperature difference and the maximum absolute temperature difference; and using the temperature percentage value as the second charging data value.

[0137] When the absolute temperature difference between the secondary charging temperature value (i.e., 33°C) and the basic charging temperature value (i.e., 31°C) is 2°C, the temperature percentage value of the absolute temperature difference (i.e., 2°C) divided by the basic charging temperature value (i.e., 31°C) is 6%, and the temperature percentage value is 6, then the second charging data value is 6.

[0138] L53. Calculate the charging abnormality value of the first battery module based on the first charging data value and the second charging data value.

[0139] In this embodiment, L53 specifically includes the following steps:

[0140] L531. Determine the first charging abnormality value based on the first charging data value, specifically: compare the first charging data value with the first data threshold value 1 and the first data threshold value 2; when the first charging data value is less than or equal to the first data threshold value 1, use the first score as the first charging abnormality value; when the first charging data value is greater than the first data threshold value 1 and less than the first data threshold value 2, use the second score as the first charging abnormality value; when the first charging data value is greater than or equal to the first data threshold value 2, use the third score as the first charging abnormality value; wherein, the first score is less than the second score, and the second score is less than the third score.

[0141] In this embodiment, it is assumed that the first data threshold 1 is 15 and the first data threshold 2 is 55.

[0142] This embodiment does not limit the specific values ​​of the first score, the second score, and the third score, as long as the first score is less than the second score and the second score is less than the third score. This embodiment can assume that the first score is 0, the second score is 1, and the third score is 2.

[0143] From step L513 , it can be seen that the first charging data value is 10. Since the first charging data value is less than the first data threshold value 1, the first score is used as the first charging abnormality value, that is, the first charging abnormality value is 0 at this time.

[0144] L532. Determine the second charging abnormality value based on the second charging data value, specifically: compare the second charging data value with the second data threshold value 1 and the second data threshold value 2. When the second charging data value is less than or equal to the second data threshold value 1, use the first score as the second charging abnormality value; when the second charging data value is greater than the second data threshold value 1 and less than the second data threshold value 2, use the second score as the second charging abnormality value; when the second charging data value is greater than or equal to the second data threshold value 2, use the third score as the second charging abnormality value.

[0145] In this embodiment, it is assumed that the first second data threshold is 10 and the second second data threshold is 30.

[0146] The first score, second score, and third score of this step must be the same as those in step L531. That is, the first score of this step is also 0, the second score is also 1, and the third score is also 2.

[0147] From step L523 , it can be seen that the second charging data value is 6. Since the second charging data value is less than the second data threshold value 1, the first score is used as the second charging abnormality value, that is, the second charging abnormality value is 0 at this time.

[0148] L533. Sum the first charging abnormality value and the second charging abnormality value to obtain a charging abnormality value; the charging abnormality threshold is twice the second score.

[0149] The charging abnormality value is equal to the sum of the first charging abnormality value (ie, 0) and the second charging abnormality value (ie, 0), which is also 0. The charging abnormality threshold is twice the second score (ie, 1), which is 2.

[0150] Since the charge abnormality value (ie, 0) is smaller than the charge abnormality threshold (ie, 2), it is determined that the first battery module is normal.

[0151] When an abnormality occurs in the first battery module / the second battery module, it will affect the normal use of the backup power supply. If the staff manually conducts regular inspections of the first battery module / the second battery module, it will be troublesome, and it is possible that the time when the abnormality occurs in the first battery module / the second battery module is a long time before the next inspection, resulting in the first battery module / the second battery module not being able to be repaired and replaced in time. The elevator power supply control method of this embodiment can automatically determine the abnormality of the first battery module / the second battery module when the first battery module / the second battery module is charging. When an abnormality occurs in the first battery module / the second battery module, an abnormality alarm message will be immediately sent to the staff. After receiving the abnormality alarm message, the staff can promptly repair and replace the abnormal first battery module / the second battery module; when the first battery module / the second battery module does not have an abnormality, the staff does not need to perform any processing on the first battery module / the second battery module, so that the use and operation of the backup power supply is still very convenient.

[0152] Furthermore, in this embodiment, step L53 further includes steps L534 and L535, which are used to predetermine the first data threshold 1 and the first data threshold 2, specifically:

[0153] L534. Acquire multiple data points based on multiple other battery modules; each data point includes an X value and a Y value, where the X value is a first charging data value of the battery module and the Y value is a mapping value indicating whether the battery module is normal or abnormal.

[0154] First, prepare a sufficient number of battery modules of the same model as the first battery module. These battery modules vary in condition, with a number of modules of varying condition. For example, prepare 20 brand new battery modules, 20 90% new battery modules, 20 80% new battery modules, 20 70% new battery modules, and so on.

[0155] Each battery module is then tested to obtain data points. For example, the charge duration for battery module 1, when it charges from a first charge threshold to a second charge threshold, is first determined (assuming it's 98 minutes). The absolute difference between this charge duration and the baseline charge duration (assuming it's 100 minutes) is then calculated (i.e., 2 minutes). The percentage of this absolute difference to the baseline charge duration is then calculated (i.e., 2%). Finally, the percentage is used as the first charging data value (i.e., 2). Therefore, the X value for battery module 1 is 2. Additional tests are then performed to determine whether the battery module is abnormal (assuming it's normal, the Y value is the normal mapping value, which could be 8). This results in the data point obtained for battery module 1 being (2, 8).

[0156] Then obtain one data point through battery module No. 2. Assume that the first charging data value obtained through battery module No. 2 is 30, but battery module No. 2 is abnormal (the abnormal mapping value can be 3), then the data point obtained through battery module No. 2 is (30, 3).

[0157] When all battery modules are tested, a sufficient number of data points will be obtained.

[0158] L535. Add all data points to the rectangular coordinate system, obtain the first and second classification lines perpendicular to the X-axis, use the X value corresponding to the first classification line as the first data threshold of one, and use the X value corresponding to the second classification line as the second data threshold of one.

[0159] After all data points are added to the rectangular coordinate system, you need to set the first and second classification lines. When setting the first classification line, the Y values ​​of the data points to the left of the first classification line should be almost all 8, and the X value corresponding to the first classification line should be as large as possible. When setting the second classification line, the Y values ​​of the data points to the right of the second classification line should be almost all 3, and the X value corresponding to the second classification line should be as small as possible.

[0160] When the first classification line is set, the X value corresponding to the first classification line is used as the first data threshold value 1; when the second classification line is set, the X value corresponding to the second classification line is used as the second data threshold value 1.

[0161] The steps for determining the second data threshold 1 and the second data threshold 2 in step L532 are similar, except that temperature data is required when testing the battery module, that is, the X value of the data point of the battery module is changed to the second charging data value.

[0162] The elevator power supply control method of this embodiment can automatically determine whether the battery module is normal. When an abnormality occurs in the battery module, a battery abnormality alarm message can be generated. The staff only needs to repair and replace the battery module when an abnormality occurs in the battery module, which can greatly reduce the workload of the staff for maintaining the elevator backup power supply.

[0163] Furthermore, in the elevator power supply control method of this embodiment, step L3 further includes:

[0164] If the first battery module is determined to be abnormal, the first battery module sets its working state to an abnormal power supply state when switching the working state; if the working state of the first battery module is an abnormal power supply state, the first battery module is stopped from supplying power and the power grid is controlled to supply power to the selected load.

[0165] Assume that the second battery module is currently operating in the power supply state and the first battery module is currently operating in the charging state. While in the charging state, the first battery module will also determine whether it is abnormal in step L5. If the determination result obtained in step L5 indicates that the first battery module is abnormal, then when the operating state is switched, the operating state of the first battery module is set to the abnormal power supply state. If the determination result indicates that the first battery module is normal or no determination result is obtained, then when the operating state is switched, the operating state of the first battery module remains in the normal power supply state.

[0166] Typically, there's a certain time interval between receiving the abnormality determination for the first battery module and receiving the state transition information for the second battery module. This time interval allows staff to repair or replace the first battery module. If the first battery module is repaired or replaced within this time interval, step L1 will be re-entered, and the operating state of the first battery module will not be changed to the abnormal power supply state. If staff do not have time to repair or replace the first battery module within this time interval, the operating state of the first battery module will be set to the abnormal power supply state.

[0167] If the first battery module switches from charging to an abnormal power supply state, the first module will cease powering, and the grid will be controlled to supply power to the selected load. The second module will continue charging normally. However, because the first module is not supplying power, it cannot obtain state transition information, and the grid will continue to supply power to the selected load. The second module will remain in the charging state until personnel arrive to repair and replace the first module. Once the first battery module is repaired and replaced, the process will re-enter step L1.

[0168] If the second battery module is determined to be abnormal, the second battery module will set its working state to an abnormal power supply state when switching the working state; if the working state of the second battery module is an abnormal power supply state, the second battery module will stop supplying power and control the power grid to supply power to the selected load.

[0169] Similarly, assuming the first battery module is currently operating in the power supply state and the second battery module is currently operating in the charging state, the second battery module will also determine whether it is abnormal in step L5 while in the charging state. If the determination result obtained in step L5 indicates that the second battery module is abnormal, then when the operating state is switched, the operating state of the second battery module is set to the abnormal power supply state. If the determination result indicates that the second battery module is normal or no determination result is obtained, then when the operating state is switched, the operating state of the second battery module remains in the normal power supply state.

[0170] Typically, there's a certain time interval between receiving the second battery module's abnormality determination and receiving the first battery module's state transition information. This time period allows staff to repair or replace the second battery module. If the second battery module is repaired or replaced within this time period, step L1 will be re-entered, and the second battery module's operating state will not be changed to the abnormal power supply state. If staff do not have time to repair or replace the second battery module within this time period, the second battery module's operating state will be set to the abnormal power supply state.

[0171] If the second battery module switches from charging to an abnormal power supply state, the second module will cease powering, and the grid will be controlled to supply power to the selected load. The first module will continue charging normally. However, because the second module is not supplying power, it cannot obtain state transition information, and the grid will continue to supply power to the selected load. At this point, the first module will remain in the charging state until personnel arrive to repair and replace the second module. Once the second battery module is repaired and replaced, the process will reenter step L1.

[0172] The elevator power supply control method of this embodiment stops supplying power when the first battery module or the second battery module detects an abnormality, and controls the power grid to provide auxiliary power supply, making battery power supply safer.

[0173] Step L4 of this embodiment also includes:

[0174] When power outage information is obtained, if the first battery module is in an abnormal power supply state, the second battery module is controlled to supply power to the elevator electrical equipment; when power outage information is obtained, if the second battery module is in an abnormal power supply state, the first battery module is controlled to supply power to the elevator electrical equipment.

[0175] Under normal circumstances, when an occasional power outage occurs, power is directly supplied by the first battery module or the second battery module in the power supply state. When the power of the first battery module or the second battery module is insufficient, the second battery module or the first battery module is switched to supply power.

[0176] If a power outage occurs when the first battery module or the second battery module is in an abnormal power supply state, power is supplied directly through the second battery module or the first battery module.

[0177] Example 2:

[0178] An elevator power supply control system, used to implement the elevator power supply control method of embodiment 1, such as Figure 2 As shown, the elevator power supply control system of this embodiment includes:

[0179] An initial power supply information acquisition module, used to acquire initial power supply information;

[0180] A power value acquisition module, configured to acquire the power value of the first battery module and the power value of the second battery module;

[0181] a first operating state setting module, configured to set the operating state of the first battery module to a power supply state and the operating state of the second battery module to a charging state when the power level of the first battery module is greater than the power level of the second battery module; otherwise, set the operating state of the first battery module to a charging state and the operating state of the second battery module to a power supply state;

[0182] A state transition information acquisition module is used to obtain state transition information and determine the subject that generates the state transition information;

[0183] a second operating state setting module, configured to, when the state transition information is generated by the first battery module, set the operating state of the first battery module to the charging state and the operating state of the second battery module to the power supply state; and, when the state transition information is generated by the second battery module, set the operating state of the second battery module to the charging state and the operating state of the first battery module to the power supply state;

[0184] a first power supply control module, configured to, when the working state of the first battery module is a power supply state, control the first battery module to supply power to a selected load until the power level of the first battery module is less than or equal to a first power threshold; and, when the working state of the second battery module is a charging state, control the second charging module to charge the second battery module until the power level of the second battery module is greater than or equal to a second power threshold; and, when the power level of the first battery module is less than or equal to the first power threshold, generate state transition information for the first battery module;

[0185] When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power value of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power value of the first battery module is greater than or equal to the second power threshold; when the power value of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information;

[0186] A power outage information acquisition module, used to obtain power outage information;

[0187] The second power supply control module is used to control the first battery module or the second battery module in the power supply state to supply power to the elevator electrical equipment when the power outage information is obtained.

[0188] Furthermore, the elevator power supply control system of this embodiment further includes:

[0189] a first battery module abnormality determination module, configured to determine whether the first battery module is abnormal when the first battery module is in a charging state;

[0190] A first battery abnormality alarm information generating and sending module is used to generate and send first battery abnormality alarm information when the first battery module is abnormal;

[0191] The first battery module abnormality determination module includes:

[0192] a charging abnormality value acquiring unit, configured to acquire a charging abnormality value of the first battery module;

[0193] a first battery module abnormality determination unit, configured to compare the charging abnormality value with a charging abnormality threshold value, and determine that the first battery module is abnormal when the charging abnormality value is greater than the charging abnormality threshold value; otherwise, determine that the first battery module is normal;

[0194] The charging abnormality value acquisition unit includes:

[0195] The first charging data value obtaining subunit is configured to obtain the first charging data value, which specifically includes:

[0196] A basic charging duration value obtaining subunit is used to obtain a basic charging duration value;

[0197] The sub-unit for obtaining the current charging duration value is used to obtain the current charging duration value, specifically: obtaining the actual charging duration value of the current charging of the first battery module when the power value is charged from the first power threshold to the second power threshold, comparing the actual charging duration value with the charging duration threshold, if the actual charging duration value is less than or equal to the charging duration threshold, then using the actual charging duration value as the current charging duration value; if the actual charging duration value is greater than the charging duration threshold, then using the charging duration threshold as the current charging duration value; the charging duration threshold is twice the basic charging duration value;

[0198] The first charging data value calculation subunit is configured to calculate the first charging data value based on the basic charging duration value and the current charging duration value, specifically by: calculating the absolute difference between the current charging duration value and the basic charging duration value; calculating the duration percentage between the absolute difference and the basic charging duration value; and using the duration percentage value as the first charging data value;

[0199] The second charging data value obtaining subunit is configured to obtain the second charging data value, which specifically includes:

[0200] a basic charging temperature value determining subunit, configured to obtain an ambient temperature value and determine, based on the ambient temperature value, a basic charging temperature value for charging the first battery module to a second power threshold;

[0201] The current charging temperature value obtaining sub-unit is used to obtain the current charging temperature value of the first battery module, specifically by determining the time point at which the current charging duration value is obtained, and detecting the current charging temperature value of the first battery module at the corresponding time point;

[0202] a second charging data value calculation subunit, configured to calculate the second charging data value based on the basic charging temperature value and the current charging temperature value, specifically by: calculating the absolute temperature difference between the current charging temperature value and the basic charging temperature value; determining the maximum absolute temperature difference; calculating the temperature percentage value of the absolute temperature difference to the maximum absolute temperature difference; and using the temperature percentage value as the second charging data value;

[0203] a charging abnormality value calculation subunit, configured to calculate a charging abnormality value of the first battery module based on the first charging data value and the second charging data value;

[0204] a second battery module abnormality determination module, configured to determine whether the second battery module is abnormal when the second battery module is in a charging state;

[0205] The second battery abnormality alarm information generating and sending module is used to generate and send the second battery abnormality alarm information when the second battery module is abnormal.

[0206] The charging abnormality value calculation subunit includes:

[0207] The first charging abnormality value determination subunit is configured to determine the first charging abnormality value based on the first charging data value, specifically by comparing the first charging data value with a first data threshold value 1 and a first data threshold value 2; when the first charging data value is less than or equal to the first data threshold value 1, using the first score as the first charging abnormality value; when the first charging data value is greater than the first data threshold value 1 and less than the first data threshold value 2, using the second score as the first charging abnormality value; when the first charging data value is greater than or equal to the first data threshold value 2, using the third score as the first charging abnormality value; wherein the first score is less than the second score, and the second score is less than the third score;

[0208] The second charging abnormality value determination subunit is configured to determine the second charging abnormality value based on the second charging data value, specifically by comparing the second charging data value with a second data threshold value 1 and a second data threshold value 2; when the second charging data value is less than or equal to the second data threshold value 1, using the first score as the second charging abnormality value; when the second charging data value is greater than the second data threshold value 1 and less than the second data threshold value 2, using the second score as the second charging abnormality value; when the second charging data value is greater than or equal to the second data threshold value 2, using the third score as the second charging abnormality value; the charging abnormality threshold value is twice the second score;

[0209] The charging abnormality value calculation subunit is configured to obtain a charging abnormality value by summing the first charging abnormality value and the second charging abnormality value.

[0210] Furthermore, the charging abnormality value calculation subunit further includes:

[0211] a data point acquisition subunit, configured to acquire a plurality of data points based on a plurality of other battery modules; each data point includes an X value and a Y value, wherein the X value is a first charging data value of the battery module, and the Y value is a mapping value of whether the corresponding battery module is normal or abnormal;

[0212] The data threshold determination subunit is used to add all data points to the rectangular coordinate system, obtain a first classification line and a second classification line perpendicular to the X-axis, and use the X value corresponding to the first classification line as the first data threshold one and the X value corresponding to the second classification line as the second data threshold one.

[0213] Furthermore, the second working state setting module includes:

[0214] an abnormal power supply state setting unit, configured to set the operating state of the first battery module to the abnormal power supply state when switching the operating state if the first battery module is determined to be abnormal; and to set the operating state of the second battery module to the abnormal power supply state when switching the operating state if the second battery module is determined to be abnormal;

[0215] The first power supply control module includes:

[0216] Abnormal power supply control unit 1, for stopping the first battery module from supplying power and controlling the power grid to supply power to the selected load if the working state of the first battery module is an abnormal power supply state; and for stopping the second battery module from supplying power and controlling the power grid to supply power to the selected load if the working state of the second battery module is an abnormal power supply state;

[0217] The second power supply control module includes:

[0218] Abnormal power supply control unit 2 is used to control the second battery module to supply power to the elevator electrical equipment when the power outage information is obtained and the first battery module is in an abnormal power supply state; when the power outage information is obtained and the second battery module is in an abnormal power supply state, the first battery module is controlled to supply power to the elevator electrical equipment.

[0219] Although certain embodiments of the present specification are shown in the accompanying drawings, it should be understood that the present specification can be implemented in various forms and should not be construed as limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present specification. It should be understood that the drawings and embodiments of the present specification are for illustrative purposes only and are not intended to limit the scope of protection of the present specification.

Claims

1. An elevator power supply control method, characterized in that: The backup power supply system includes a first battery module, a first charging module electrically connected to the first battery module, a second battery module, a second charging module electrically connected to the second battery module, and a power grid electrically connected to the first charging module and the second charging module. The backup power supply system includes the following steps: L1. Obtain initial power supply information, and obtain the power value of the first battery module and the power value of the second battery module. When the power value of the first battery module is greater than the power value of the second battery module, set the working state of the first battery module to the power supply state and the working state of the second battery module to the charging state; otherwise, set the working state of the first battery module to the charging state and the working state of the second battery module to the power supply state; L2 obtain state transition information, and determine the state transition information generating subject; When the state transition information is generated by the first battery module, the working state of the first battery module is set to the charging state, and the working state of the second battery module is set to the power supply state; when the state transition information is generated by the second battery module, the working state of the second battery module is set to the charging state, and the working state of the first battery module is set to the power supply state; L3. When the first battery module is in the power supply state, controlling the first battery module to supply power to the selected load until the charge level of the first battery module is less than or equal to a first charge threshold; when the second battery module is in the charging state, controlling the second charging module to charge the second battery module until the charge level of the second battery module is greater than or equal to a second charge threshold; when the charge level of the first battery module is less than or equal to the first charge threshold, the first battery module generates state transition information; When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power level of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power level of the first battery module is greater than or equal to the second power threshold; when the power level of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information; L4 obtain power off information; when the power off information is obtained, the control working state is the first battery module or the second battery module powering the elevator electrical equipment; L5. When the first battery module is in a charging state, it is determined whether the first battery module is abnormal. When the first battery module is abnormal, an abnormal alarm message of the first battery is generated and sent; Among them, determining whether the first battery module is abnormal is specifically as follows: obtaining the charging abnormality value of the first battery module, comparing the charging abnormality value with the charging abnormality threshold, and when the charging abnormality value is greater than the charging abnormality threshold, determining that the first battery module is abnormal; otherwise, determining that the first battery module is normal.

2. The elevator power supply control method according to claim 1, characterized in that: In the L5, obtaining the abnormal charging value of the first battery module specifically includes the following steps: L51. Obtaining a first charging data value, specifically comprising the following steps: L511. Get the basic charging duration value; L512. Obtaining a current charging duration value, specifically: obtaining an actual charging duration value when the power value of the first battery module is charged from a first power threshold to a second power threshold, comparing the actual charging duration value with the charging duration threshold; if the actual charging duration value is less than or equal to the charging duration threshold, using the actual charging duration value as the current charging duration value; if the actual charging duration value is greater than the charging duration threshold, using the charging duration threshold as the current charging duration value; the charging duration threshold is twice the basic charging duration value; If the current charging duration value cannot be obtained, exit L5; L513. Calculate the first charging data value based on the basic charging duration value and the current charging duration value, specifically: calculate the absolute difference between the current charging duration value and the basic charging duration value; calculate the percentage of the absolute difference to the basic charging duration value; and use the percentage value as the first charging data value; L52. Obtaining a second charging data value, specifically comprising the following steps: L521 obtains the ambient temperature value, and determines the basic charging temperature value for charging the first battery module to the second power threshold according to the ambient temperature value; L522 obtains the first battery module when the charging temperature value, specifically: determine the time point to obtain the value of the charging duration, the time point corresponding to the detection of the first battery module when the charging temperature value; L523. Calculating a second charging data value based on the basic charging temperature value and the current charging temperature value, specifically: calculating the absolute temperature difference between the current charging temperature value and the basic charging temperature value; determining the maximum absolute temperature difference; calculating the temperature percentage of the absolute temperature difference to the basic charging temperature value; and using the temperature percentage as the second charging data value; L53. The charging abnormality value of the first battery module is calculated based on the first charging data value and the second charging data value; L6. When the second battery module is in a charging state, determine whether the second battery module is abnormal. If the second battery module is abnormal, generate and send a second battery abnormality alarm message.

3. The elevator power supply control method according to claim 2, characterized in that: In the L53, the charging abnormality value of the first battery module is calculated based on the first charging data value and the second charging data value, specifically including the following steps: L531. Determining a first charging abnormality value based on a first charging data value, specifically: comparing the first charging data value with a first data threshold value 1 and a first data threshold value 2; when the first charging data value is less than or equal to the first data threshold value 1, using a first score as the first charging abnormality value; when the first charging data value is greater than the first data threshold value 1 and less than the first data threshold value 2, using a second score as the first charging abnormality value; when the first charging data value is greater than or equal to the first data threshold value 2, using a third score as the first charging abnormality value; wherein the first score is less than the second score, and the second score is less than the third score; L532. Determine a second charging abnormality value based on the second charging data value, specifically by comparing the second charging data value with a first second data threshold value and a second data threshold value. When the second charging data value is less than or equal to the first second data threshold value, use the first score as the second charging abnormality value. When the second charging data value is greater than the first second data threshold value and less than the second data threshold value, use the second score as the second charging abnormality value. When the second charging data value is greater than or equal to the second data threshold value, use the third score as the second charging abnormality value. The charging abnormality threshold value is twice the second score. L533. Sum the first charging abnormality value and the second charging abnormality value to obtain a charging abnormality value.

4. The elevator power supply control method according to claim 3, characterized in that: The L53 further comprises the following steps: L534 obtains multiple data points based on multiple other battery modules; each data point includes an X value and a Y value, the X value is the first charging data value of the battery module, the Y value is the mapping value corresponding to the normal or abnormal battery module; L535. Add all data points to a rectangular coordinate system, obtain a first classification line and a second classification line perpendicular to the X-axis, use the X value corresponding to the first classification line as the first data threshold of one, and use the X value corresponding to the second classification line as the second data threshold of one.

5. The elevator power supply control method according to claim 2, characterized in that: The L3 also includes: If the first battery module is determined to be abnormal, the first battery module sets its working state to the abnormal power supply state when switching the working state; if the second battery module is determined to be abnormal, the second battery module sets its working state to the abnormal power supply state when switching the working state; If the working state of the first battery module is an abnormal power supply state, the first battery module is stopped from supplying power and the power grid is controlled to supply power to the selected load; if the working state of the second battery module is an abnormal power supply state, the second battery module is stopped from supplying power and the power grid is controlled to supply power to the selected load; The L4 also includes: When power outage information is obtained, if the first battery module is in an abnormal power supply state, the second battery module is controlled to supply power to the elevator electrical equipment; when power outage information is obtained, if the second battery module is in an abnormal power supply state, the first battery module is controlled to supply power to the elevator electrical equipment.

6. An elevator power supply control system, used to execute the elevator power supply control method according to claim 1, characterized in that: include: An initial power supply information acquisition module, used to acquire initial power supply information; A power value acquisition module, configured to acquire the power value of the first battery module and the power value of the second battery module; a first operating state setting module, configured to set the operating state of the first battery module to a power supply state and the operating state of the second battery module to a charging state when the power level of the first battery module is greater than the power level of the second battery module; otherwise, set the operating state of the first battery module to a charging state and the operating state of the second battery module to a power supply state; A state transition information acquisition module is used to acquire state transition information and determine the generating entity of the state transition information; a second operating state setting module, configured to, when the first battery module is the subject generating the state transition information, set the operating state of the first battery module to the charging state, and set the operating state of the second battery module to the power supply state; and, when the second battery module is the subject generating the state transition information, set the operating state of the second battery module to the charging state, and set the operating state of the first battery module to the power supply state; a first power supply control module, configured to, when the working state of the first battery module is a power supply state, control the first battery module to supply power to a selected load until the power level of the first battery module is less than or equal to a first power threshold; and, when the working state of the second battery module is a charging state, control the second charging module to charge the second battery module until the power level of the second battery module is greater than or equal to a second power threshold; and, when the power level of the first battery module is less than or equal to the first power threshold, generate state transition information for the first battery module; When the working state of the second battery module is the power supply state, the second battery module is controlled to supply power to the selected load until the power level of the second battery module is less than or equal to the first power threshold; when the working state of the first battery module is the charging state, the first charging module is controlled to charge the first battery module until the power level of the first battery module is greater than or equal to the second power threshold; when the power level of the second battery module is less than or equal to the first power threshold, the second battery module generates state transition information; A power outage information acquisition module, used to obtain power outage information; a second power supply control module, configured to control the first battery module or the second battery module in the power supply state to supply power to the elevator electrical equipment when the power-off information is obtained; a first battery module abnormality determination module, configured to determine whether the first battery module is abnormal when the first battery module is in a charging state; a first battery abnormality alarm information generating and sending module, configured to generate and send first battery abnormality alarm information when the first battery module is abnormal; Wherein, the first battery module abnormality determination module includes: a charging abnormality value acquiring unit, configured to acquire a charging abnormality value of the first battery module; The first battery module abnormality determination unit is configured to compare the charging abnormality value with the charging abnormality threshold, and determine that the first battery module is abnormal when the charging abnormality value is greater than the charging abnormality threshold; otherwise, determine that the first battery module is normal.

7. The elevator power supply control system according to claim 6, characterized in that: The charging abnormality value acquiring unit includes: The first charging data value obtaining subunit is configured to obtain the first charging data value, which specifically includes: A basic charging duration value obtaining subunit is used to obtain a basic charging duration value; The sub-unit for obtaining the current charging duration value is configured to obtain the current charging duration value, specifically by: obtaining the current actual charging duration value when the power value of the first battery module is charged from the first power threshold to the second power threshold, comparing the current actual charging duration value with the charging duration threshold, and if the current actual charging duration value is less than or equal to the charging duration threshold, using the current actual charging duration value as the current charging duration value; if the current actual charging duration value is greater than the charging duration threshold, using the charging duration threshold as the current charging duration value; the charging duration threshold is twice the basic charging duration value; A first charging data value calculation subunit is configured to calculate a first charging data value based on a basic charging duration value and a current charging duration value, specifically by: calculating an absolute difference between the current charging duration value and the basic charging duration value; calculating a percentage value of the absolute difference between the durations and the basic charging duration value; and using the duration percentage value as the first charging data value; The second charging data value obtaining subunit is configured to obtain the second charging data value, which specifically includes: a basic charging temperature value determination subunit, configured to obtain an ambient temperature value and determine, based on the ambient temperature value, a basic charging temperature value for charging the first battery module to a second power threshold; The current charging temperature value obtaining sub-unit is used to obtain the current charging temperature value of the first battery module, specifically by: determining a time point for obtaining the current charging duration value, and detecting and obtaining the current charging temperature value of the first battery module at the corresponding time point; a second charging data value calculation subunit, configured to calculate a second charging data value based on a basic charging temperature value and a current charging temperature value, specifically by: calculating an absolute temperature difference between the current charging temperature value and the basic charging temperature value; determining a maximum absolute temperature difference; calculating a temperature percentage value between the absolute temperature difference and the basic charging temperature value; and using the temperature percentage value as the second charging data value; a charging abnormality value calculation subunit, configured to calculate a charging abnormality value of the first battery module based on the first charging data value and the second charging data value; a second battery module abnormality determination module, configured to determine whether the second battery module is abnormal when the second battery module is in a charging state; The second battery abnormality alarm information generating and sending module is used to generate and send second battery abnormality alarm information when the second battery module is abnormal.

8. The elevator power supply control system according to claim 7, characterized in that: The charging abnormality value calculation subunit includes: a first charging abnormality value determination subunit, configured to determine a first charging abnormality value based on a first charging data value, specifically by comparing the first charging data value with a first data threshold value 1 and a first data threshold value 2; when the first charging data value is less than or equal to the first data threshold value 1, using a first score as the first charging abnormality value; when the first charging data value is greater than the first data threshold value 1 and less than the first data threshold value 2, using a second score as the first charging abnormality value; and when the first charging data value is greater than or equal to the first data threshold value 2, using a third score as the first charging abnormality value; wherein the first score is less than the second score, and the second score is less than the third score; The second charging abnormality value determination subunit is configured to determine a second charging abnormality value based on a second charging data value, specifically by comparing the second charging data value with a first second data threshold value and a second data threshold value. When the second charging data value is less than or equal to the first second data threshold value, the first score is used as the second charging abnormality value. When the second charging data value is greater than the first second data threshold value and less than the second data threshold value, the second score is used as the second charging abnormality value. When the second charging data value is greater than or equal to the second data threshold value, the third score is used as the second charging abnormality value. The charging abnormality threshold value is twice the second score. The charging abnormality value calculation subunit is configured to obtain a charging abnormality value by summing the first charging abnormality value and the second charging abnormality value.

9. The elevator power supply control system according to claim 8, characterized in that: The charging abnormality value calculation subunit further includes: a data point acquisition subunit, configured to acquire a plurality of data points based on a plurality of other battery modules; each data point includes an X value and a Y value, wherein the X value is a first charging data value of the battery module, and the Y value is a mapping value of whether the corresponding battery module is normal or abnormal; The data threshold determination subunit is configured to add all data points to a rectangular coordinate system, obtain a first classification line and a second classification line perpendicular to the X-axis, and use the X value corresponding to the first classification line as the first data threshold 1 and the X value corresponding to the second classification line as the second data threshold 1.

10. The elevator power supply control system according to claim 7, characterized in that: The second working state setting module includes: an abnormal power supply state setting unit, configured to set the operating state of the first battery module to the abnormal power supply state when switching the operating state if the first battery module is determined to be abnormal; and to set the operating state of the second battery module to the abnormal power supply state when switching the operating state if the second battery module is determined to be abnormal; The first power supply control module includes: Abnormal power supply control unit 1, configured to, if the operating state of the first battery module is an abnormal power supply state, stop the first battery module from supplying power and control the power grid to supply power to the selected load; if the operating state of the second battery module is an abnormal power supply state, stop the second battery module from supplying power and control the power grid to supply power to the selected load; The second power supply control module includes: Abnormal power supply control unit 2 is used to control the second battery module to supply power to the elevator electrical equipment when the power outage information is obtained and the first battery module is in an abnormal power supply state; when the power outage information is obtained and the second battery module is in an abnormal power supply state, the first battery module is controlled to supply power to the elevator electrical equipment.

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