Elevator energy-saving system based on high-power lead storage battery

Abstract

The invention discloses an elevator energy-saving system based on a high-power lead storage battery. The elevator energy-saving system can be applied to the technical field of lead storage battery application. The lead storage battery pack consisting of a plurality of high-power lead storage batteries is arranged in the movable air-cooled box body, so that the lead storage battery pack can be conveniently moved to an application range of a target elevator, and then the function control module, the battery charging module and the battery discharging module are arranged in the function control equipment; a function control module controls a battery charging module to obtain electric energy from a target elevator according to elevator information data received by a program management center so as to charge a lead storage battery pack, or controls a battery discharging module to obtain electric energy from the lead storage battery pack according to the elevator information data so as to provide electric energy for the target elevator; therefore, electric energy generated in the working process of the target elevator can be effectively utilized, electric energy loss in the using process of the elevator is reduced, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This application relates to the field of lead-acid battery application technology, and in particular to an elevator energy-saving system based on high-power lead-acid batteries. Background Technology

[0002] In related technologies, the energy loss and generation characteristics of elevator systems are characterized by instantaneous high current. Batteries are devices that convert chemical energy into electrical energy, and the appropriate selection of battery type for use in energy-saving systems is crucial. Lithium batteries have excellent performance but insufficient safety, posing a significant risk of combustion and explosion; nickel-metal hydride batteries are relatively safe, but have low potential, high internal resistance, low energy conversion efficiency, and are difficult to manufacture in large capacity; none of these are ideal components for energy recovery and output in energy-saving systems. Elevators consume energy through motor operation during both ascending and descending, light and heavy loads, especially during startup. When the elevator decelerates and stops, the energy generated must be dissipated. Currently, elevator management systems rely on resistor heating to eliminate this energy, which directly affects the temperature of the elevator space and thus human comfort.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the Invention

[0004] The main objective of this application is to propose an elevator energy-saving system based on a high-power lead-acid battery, which can effectively reduce energy consumption during elevator use and reduce the impact on temperature in the elevator space.

[0005] To achieve the above objectives, this application proposes an elevator energy-saving system based on a high-power lead-acid battery, the elevator energy-saving system comprising: A portable air-cooled lead-acid battery pack module, comprising a portable air-cooled enclosure and a lead-acid battery pack, wherein the lead-acid battery pack is disposed within the portable air-cooled enclosure; the lead-acid battery pack is composed of a plurality of high-power lead-acid batteries; The program management center is connected to the elevator control system of the target elevator and is used to receive elevator information data sent by the elevator control system. A functional control device, comprising a functional control module, a battery charging module, and a battery discharging module, wherein the functional control module is used to control the battery charging module to obtain energy generated during braking from the target elevator to charge the lead-acid battery pack according to the elevator information data, or to control the battery discharging module to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator according to the elevator information data.

[0006] In some embodiments, the high-power lead-acid batteries in the lead-acid battery pack are arranged and fixed in an orderly manner in the movable air-cooled enclosure, and an air flow channel is provided between the high-power lead-acid batteries in the movable air-cooled enclosure; the movable air-cooled enclosure is provided with an intake fan and an exhaust fan, the intake fan is used to deliver gas into the air flow channel, and the exhaust fan is used to discharge the gas in the air flow channel to the atmosphere.

[0007] In some embodiments, the lead-acid battery pack is further provided with a temperature sensor; the temperature sensor is in close contact with the surface of the lead-acid battery pack and is used to monitor the real-time temperature data of the lead-acid battery pack; The program management center generates a fan start signal based on the real-time temperature data; The function control module controls the working status of the intake fan and the exhaust fan according to the fan start signal.

[0008] In some embodiments, generating a fan start signal based on the real-time temperature data includes: Once the real-time temperature data falls within a preset temperature range, a fan start signal is generated.

[0009] In some embodiments, controlling the battery charging module to obtain energy generated during braking from the target elevator to charge the lead-acid battery pack based on the elevator information data includes: Based on the elevator information data, the target elevator is determined to be in a first preset working state. The battery charging module is controlled to obtain electrical energy from the target energy storage capacitor corresponding to the target elevator to charge the lead-acid battery pack. The first preset working state includes the target elevator being in a light-load upward state or a heavy-load downward state.

[0010] In some embodiments, controlling the battery discharge module to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator based on the elevator information data includes: Based on the elevator information data, the target elevator is determined to be in a second preset working state, and the battery discharge module is controlled to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator.

[0011] In some embodiments, the control battery discharge module obtains electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator, including: Acquire the terminal voltage monitoring signal of the lead-acid battery pack; Analyze the voltage change status of the lead-acid battery pack based on the terminal voltage monitoring signal; The process of controlling the lead-acid battery pack to supply power to the target elevator based on the voltage change state.

[0012] In some embodiments, the battery charging module is charged using a constant voltage float charging mode.

[0013] In some embodiments, the battery discharge module uses a constant power output mode for discharging.

[0014] In some embodiments, the high-power lead-acid batteries in the lead-acid battery pack are connected in series to form a battery pack with a terminal voltage between 24V and 72V.

[0015] The embodiments of this application include at least the following beneficial effects: This application provides an elevator energy-saving system based on high-power lead-acid batteries. This solution involves setting up a movable air-cooled lead-acid battery pack module, a program management center, and a function control device. The lead-acid battery pack, composed of several high-power lead-acid batteries, is housed in the movable air-cooled enclosure, making it easy to move the lead-acid battery pack within the application range of the target elevator. Then, after setting up a function control module, a battery charging module, and a battery discharging module in the function control device, the function control module controls the battery charging module to obtain electrical energy from the target elevator to charge the lead-acid battery pack based on elevator information data received from the program management center, or controls the battery discharging module to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator based on elevator information data. This effectively utilizes the electrical energy generated during the operation of the target elevator, reduces energy consumption during elevator use, and achieves energy saving and emission reduction effects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an elevator energy-saving system based on a high-power lead-acid battery provided in an embodiment of this application; Figure 2 This is a schematic diagram of the functional control device provided in the embodiments of this application; Figure 3 This is a schematic diagram of a portable air-cooled lead-acid battery pack module provided in an embodiment of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0018] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”

[0019] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0021] In related technologies, the energy loss and generation characteristics of elevator systems are characterized by instantaneous high current. Batteries are devices that convert chemical energy into electrical energy, and the appropriate selection of battery type for use in energy-saving systems is crucial. Lithium batteries have excellent performance but insufficient safety, posing a significant risk of combustion and explosion; nickel-metal hydride batteries are relatively safe, but have low potential, high internal resistance, low energy conversion efficiency, and are difficult to manufacture in large capacity; none of these are ideal components for energy recovery and output in energy-saving systems. Elevators consume energy through motor operation during both ascending and descending, light and heavy loads, especially during startup. When the elevator decelerates and stops, the energy generated must be dissipated. Currently, elevator management systems rely on resistor heating to eliminate this energy, which directly affects the temperature of the elevator space and thus human comfort.

[0022] In view of this, this application provides an elevator energy-saving system based on a high-power lead-acid battery. By setting up a chargeable and dischargeable lead-acid battery pack to interact with the elevator, the power consumption during elevator use can be effectively reduced, and the impact on the temperature in the elevator space can be reduced.

[0023] The embodiments of this application will be described in detail below with reference to the accompanying drawings: Reference Figure 1 An elevator energy-saving system based on high-power lead-acid batteries is disclosed. The system includes a portable, air-cooled lead-acid battery module, a program management center, and functional control equipment. Among these, for example... Figure 3As shown, the portable air-cooled lead-acid battery pack module includes a portable air-cooled enclosure 110 and a lead-acid battery pack, which is housed within the enclosure. The lead-acid battery pack consists of several high-power lead-acid batteries 106. In this embodiment, the high-power lead-acid batteries are energy output or energy recovery components, specifically arranged in series to form a battery pack with a terminal voltage V0 between 24V and 72V. The program management center is connected to the elevator control system of the target elevator to receive elevator information data sent by the elevator control system. For example... Figure 2 As shown, the functional control device includes a functional control module, a battery charging module, and a battery discharging module. The functional control module controls the battery charging module to obtain electrical energy generated during braking from the target elevator to charge the lead-acid battery pack, or controls the battery discharging module to obtain electrical energy from the lead-acid battery pack to supply power to the target elevator, based on elevator information data. Specifically, the high-power lead-acid battery used in this embodiment has advantages such as high efficiency, high potential, low internal resistance, suitable performance temperature, safety and reliability, and high cost-effectiveness. Therefore, it can effectively improve energy storage efficiency and reduce usage costs.

[0024] Understandably, when the target elevator is determined to be in a first preset operating state based on elevator information data, the battery charging module is controlled to obtain electrical energy from the target energy storage capacitor corresponding to the target elevator to charge the lead-acid battery pack. Specifically, the first preset operating state includes the target elevator being in a light-load upward state or a heavy-load downward state. When the elevator is in a light-load upward state or a heavy-load downward state, the elevator motor will be in a generator state. The generated electrical energy cannot be directly used by the elevator. Recovering it through a capacitor and then converting it into heat through a resistor would lead to excessively high temperatures during elevator operation, which would affect the functional components of the elevator. Therefore, this embodiment obtains electrical energy from the target energy storage capacitor through an external battery charging module to charge the lead-acid battery pack. This allows for energy storage using an external lead-acid battery pack, effectively improving the energy utilization rate during elevator use, reducing energy waste, and eliminating the need for electrothermal conversion using resistors, thus effectively reducing the heat generated during elevator use and minimizing the impact of heat on elevator functional components. The battery charging module can adopt a constant voltage floating charging mode, with the constant voltage point controlled between 2.4V / cell and 2.6V / cell. This allows for a continuous charging maintenance mode for the lead-acid battery pack using constant voltage and a small current, preventing self-discharge and extending the battery pack's lifespan.

[0025] It is understandable that when the target elevator is determined to be in a second preset operating state based on elevator information data, the battery discharge module is controlled to obtain electrical energy from the lead-acid battery pack to provide power to the target elevator. The second preset operating state can be a sudden power outage of the target elevator or maintenance of the target elevator. For example, when a sudden power outage of the target elevator is determined, this embodiment can use the battery discharge module to obtain power from the lead-acid battery pack to provide power to the target elevator, thereby controlling the target elevator to stop at the exit position of a designated floor, thus improving the safety of the target elevator. In this embodiment, the electrical energy stored in the high-power lead-acid battery in the lead-acid battery pack can be used for elevator emergency lighting or traction motor starting power, thereby driving the elevator to the nearest floor.

[0026] It is understandable that in this embodiment, during the process of controlling the battery discharge module to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator, such as... Figure 3 As shown, by acquiring the terminal voltage V0 monitoring signal 212 of the lead-acid battery pack, analyzing the voltage change state of the lead-acid battery pack based on the terminal voltage monitoring signal, and then controlling the lead-acid battery pack to supply power to the target elevator based on the voltage change state. Specifically, the lead-acid battery discharge termination voltage in this embodiment is 1.2V / cell to 1.7V / cell. When the average voltage V0 value of the battery pack is 1.2V / cell to 1.7V / cell, the voltage change of the lead-acid battery pack is 1.2V / cell to 1.7V / cell. 开路 If the voltage value is below 2.01V, it will be considered as over-discharge of the battery, and the energy output function will be temporarily suspended; the voltage will be restored when the average voltage value of the battery pack terminal V0 is lower than the voltage of each cell (V). 开路 When the voltage value is higher than 2.05V, the energy output function is restored. In this embodiment, the battery discharge module uses a constant power output mode, which improves the stability of the discharge process.

[0027] It is understandable that, such as Figure 3 As shown, in this embodiment, the high-power lead-acid batteries in the lead-acid battery pack are arranged and fixed in an orderly manner in a movable air-cooled enclosure. Airflow channels 120 are provided between the high-power lead-acid batteries within the movable air-cooled enclosure. The movable air-cooled enclosure is equipped with an intake fan 108 and an exhaust fan 109. The intake fan is used to supply gas into the airflow channels, and the exhaust fan is used to exhaust the gas from the airflow channels into the atmosphere. Specifically, as... Figure 1 and Figure 3 As shown, the lead-acid battery pack is also equipped with a temperature sensor 213 and a fan power cable 188. The temperature sensor is attached to the surface of the lead-acid battery pack and is used to monitor the real-time temperature data of the battery pack. Both the intake fan and the exhaust fan are connected to the function control module via the fan power cable. In this embodiment, after the program management center generates a fan start signal based on the real-time temperature data, the function control module controls the operating status of the intake fan and the exhaust fan according to the fan start signal.

[0028] Specifically, a fan start signal is generated when the real-time temperature data falls within a preset temperature range, thereby preventing the fan from running continuously and effectively saving energy. In this embodiment, the preset temperature range can be between 30°C and 35°C. That is, when the real-time temperature data is determined to be between 30°C and 35°C, a fan start signal is sent to the function control module, causing the function control module to activate the intake and exhaust fans. This allows cool air to be delivered into the movable air-cooled enclosure, where it exchanges heat with the lead-acid battery pack as it flows through the airflow channel, achieving cooling.

[0029] As can be seen from the above, this application embodiment uses a chargeable lead-acid battery pack to interact with the elevator, thereby effectively reducing the energy waste rate during elevator use, saving energy, reducing the heat generated by electrothermal conversion, and minimizing the impact on the temperature in the elevator space.

[0030] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0031] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0032] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0033] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0034] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0035] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0036] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0037] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application.

[0038] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. An elevator energy-saving system based on a high-power lead-acid battery, characterized in that, The elevator energy-saving system includes: A portable air-cooled lead-acid battery pack module, comprising a portable air-cooled enclosure and a lead-acid battery pack, wherein the lead-acid battery pack is disposed within the portable air-cooled enclosure; the lead-acid battery pack is composed of a plurality of high-power lead-acid batteries; The program management center is connected to the elevator control system of the target elevator and is used to receive elevator information data sent by the elevator control system. A functional control device, comprising a functional control module, a battery charging module, and a battery discharging module, wherein the functional control module is used to control the battery charging module to obtain energy generated during braking from the target elevator to charge the lead-acid battery pack according to the elevator information data, or to control the battery discharging module to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator according to the elevator information data.

2. The elevator energy-saving system according to claim 1, characterized in that, The high-power lead-acid batteries in the lead-acid battery pack are arranged and fixed in an orderly manner in the movable air-cooled enclosure. An air flow channel is provided between the high-power lead-acid batteries in the movable air-cooled enclosure. An intake fan and an exhaust fan are provided on the movable air-cooled enclosure. The intake fan is used to deliver gas into the air flow channel, and the exhaust fan is used to discharge the gas in the air flow channel to the atmosphere.

3. The elevator energy-saving system according to claim 2, characterized in that, The lead-acid battery pack is also equipped with a temperature sensor; the temperature sensor is in close contact with the surface of the lead-acid battery pack and is used to monitor the real-time temperature data of the lead-acid battery pack. The program management center generates a fan start signal based on the real-time temperature data; The function control module controls the working status of the intake fan and the exhaust fan according to the fan start signal.

4. The elevator energy-saving system according to claim 3, characterized in that, The step of generating a fan start signal based on the real-time temperature data includes: Once the real-time temperature data falls within a preset temperature range, a fan start signal is generated.

5. The elevator energy-saving system according to claim 1, characterized in that, The step of controlling the battery charging module to obtain energy generated during braking from the target elevator to charge the lead-acid battery pack based on the elevator information data includes: Based on the elevator information data, the target elevator is determined to be in a first preset working state. The battery charging module is controlled to obtain electrical energy from the target energy storage capacitor corresponding to the target elevator to charge the lead-acid battery pack. The first preset working state includes the target elevator being in a light-load upward state or a heavy-load downward state.

6. The elevator energy-saving system according to claim 1, characterized in that, The step of controlling the battery discharge module to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator based on the elevator information data includes: Based on the elevator information data, the target elevator is determined to be in a second preset working state, and the battery discharge module is controlled to obtain electrical energy from the lead-acid battery pack to provide electrical energy to the target elevator.

7. The elevator energy-saving system according to claim 1, characterized in that, The control battery discharge module obtains electrical energy from the lead-acid battery pack to supply power to the target elevator, including: Acquire the terminal voltage monitoring signal of the lead-acid battery pack; Analyze the voltage change status of the lead-acid battery pack based on the terminal voltage monitoring signal; The process of controlling the lead-acid battery pack to supply power to the target elevator based on the voltage change state.

8. The elevator energy-saving system according to claim 5, characterized in that, The battery charging module uses a constant voltage floating charging mode.

9. The elevator energy-saving system according to claim 7, characterized in that, The battery discharge module uses a constant power output mode for discharging.

10. The elevator energy-saving system according to claim 1, characterized in that, The high-power lead-acid batteries in the lead-acid battery pack are connected in series to form a battery pack with a terminal voltage between 24V and 72V.

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