System for storing electrical energy generated by piezoelectric sensor

Abstract

The invention relates to a method and a system for storing electric energy generated by a piezoelectric generator. The technical result, i.e., the continuous operation of the system, is achieved by allowing the charge-discharge cycle conversion of the storage battery to be achieved without disconnecting the battery from the electrical equipment. A long-term continuous or repeated mechanical energy-to-electric energy conversion condition and a mechanical load characteristic capable of realizing efficient accumulation of electric energy are made possible. The invention also aims to excite industrial enterprises to carry out experimental work so as to expand the range of piezoelectric material products capable of meeting reasonable requirements (see the item 3.2 in the specification). Only under the common effort of all related parties, the continuously increasing advanced technical achievements can be ensured, which accords with the purpose that 'Patent Cooperative Strip' June 19, 1970 is expected to make contributions to scientific and technological progress'.

Description

[0001] Part 1 Technical Fields The purpose of this invention is to provide a device for storing electrical energy, a method for storing electrical energy using a piezoelectric generator, and a method for controlling it in DC power supply mode.

[0002] Part 2 References and Prior Art 1) Based on the invention of Russian Federation Patent 2507672, author Goydin NT; You can quickly access it at the following URL: https: / / www1.fips.ru / registers-doc-view / fipsservlet?DB=RUPAT&DocNumber=2507672&TypeFile=html 2) Technical characteristics of the Haikun-class submarine, China - See https: / / en.wikipedia.org / wiki / Hai_Kun-class_submarine for details. - Its inventors provided examples of the extensive use of piezoelectric generator operation, as well as responses from organizations associated with the Russian Federation government; 3) Article "Piezoelectric Generator", by Geyner AF, Russia. - See https: / / avrora-binib.ru / stati / pezokeramicheskie_istochniki_vysokogo napryazheniya / ?vsclid=lrc5ihir5173917788; 4) The response from the Director of the Russian Scientific Institute on November 21, 2013. - See https: / / znamenatel2-011.liveiournal.com / 1606.html for details. 5) The response from the Russian Ministry of Industry and Trade on December 5, 2016. - See https: / / znamenatel2-011.livejournal.com / 1963.html for details. 6) The Russian Ministry of Defense's response on September 6, 2018. - See https: / / znamenatel2-011.liveiournal.com / 2050.html for details; - Further references are provided regarding publicly available technical structures whose operation is related to long-term and iterative changes in load: 7) Current characteristics of Panamax vessels, TEU containers, and berth cranes. - See https: / / en.wikipedia.org / wiki / Container_ship for details. 8) Current characteristics of tower cranes (taking China SFT250C / T7520-16 as an example). - See details at https: / / www.sanyglobal.com / ru / product / crane / tower_crane / 96 / 759 / 9) Taking the products of China Henan Heavy Industry Group as an example, what are the current characteristics of shipbuilding cranes? - See http: / / lifting-crane.ru / 2-gantrv-crane / 209225 / for details 10) Current characteristics of lithium-ion batteries, China. - See details at https: / / www.aoklv-battery.com / ru / product / alfp-48200.html Technical solutions for using piezoelectric generators, considered separately from methods of storing electrical energy (see below), are known (RU 2665682), including rotating piezoelectric generators in between (RU 2264687). In the United States, various aspects of the use of piezoelectric elements are known, see US 45111818, April 16, 1985, and US7830071 B2, November 9, 2010. In this case, the generator is not used to store electrical energy.

[0003] The inventors proposed an unknown solution that could achieve uninterrupted power supply when the operating conditions of the piezoelectric generator are stable. The inventors have proposed a novel solution in which, when the piezoelectric generator operates under stable conditions, an uninterrupted power supply can be obtained based on the electrical energy generated by the piezoelectric generator.

[0004] In implementation, the proposed solution does not use: - Other power sources, other functional (conductive) components of general structures (containers, boxes, supports), fault detection systems, and personnel presence monitoring systems, as shown in patent RU 2575862, wherein (in contrast to the proposed solution) the system for storing electrical energy is connected in parallel with the load (see RU 2575862). Figure 1The system also has connections as disclosed in the descriptions of patent RU 2512880 and patent application RU 2012111677; - A monitoring system (web server, Wi-Fi router) for collecting statistical data and periodic operational distribution of the entire system, as described in patent RU 2749548, wherein operational optimization is performed "every three days" (see Phase 4 disclosure in RU 2749544). - A control system managed by temperature data, as described in patent application RU 2012107169. This beneficial effect has never been seen before, and there has been a lack of other specific effects on "storage" and "continuous operation".

[0005] Part 3 Substantive Disclosure of the Invention in a Specific Field 3.1. As is well known, in order to use piezoelectric materials to convert mechanical energy into electrical energy, the following conditions must be met: dF / dT ≠ 0 (not equal to zero) Where (dF / dT) is the force difference that varies with time, and can also be found in Part 2, Reference 4).

[0006] In other words, not only is force required, but also changes in force are needed.

[0007] Reference 1 in Part 2, namely patent RU 2507672, discloses a method for generating electrical energy for a submarine or other object capable of controlled movement at depth when the operating conditions of a piezoelectric transducer are met continuously for a long time. At underwater, a submarine is constantly subjected to external pressure from the water above it. Changes in the submarine's diving depth cause fluctuations in its overall linear dimensions. Figure 1 , 2 ).

[0008] An example can be observed in the 28-30 minute segment of the film "Periscope" (1996, 20th Century Fox, USA).

[0009] The hull transmits the increase in seawater pressure to the piezoelectric element (see...). Figure 2 (Position 2), the piezoelectric element is rigidly connected to the deck (1). Simultaneously, a depth change of 10 meters results in a 10 N / m... 2 (1 kgf / cm) 2 The pressure changes. Therefore, as the submarine's diving depth changes, the conditions for activating the piezoelectric generator remain constant with the depth. These conditions are still available up to several hundred meters deep (see Part 2, 2 of the literature).

[0010] Patent RU 2507672 discloses a system and method for "generating electrical energy" using a piezoelectric transducer, receiving mechanical action through a variable-stiffness shock absorber mounted on structural elements of a submarine (claims 1, 2, 3, 7, and 8 of RU 250767). Furthermore, features such as "mounted on the deck," "rigidly connected," "interactive with the hull," "mounted on a base," "transmission of seawater pressure," and "mechanical load" are sufficient to reveal the relationship between "changes in diving depth" and the resulting electrical energy generation, without specifying any quantitative data regarding the dimensions and orientation of these elements.

[0011] However, the solution disclosed in patent RU 2507672 does not propose a method for storing electrical energy obtained using a piezoelectric transducer.

[0012] In other words, the method of obtaining electrical energy from piezoelectric transducers is known, but the solution for storing this electrical energy is unknown. Also unknown is the operation of piezoelectric transducers encapsulated under high mechanical loads using rigid dielectric elements.

[0013] The following are crucial factors in considering an inventor's proposal: - One cannot draw conclusions about the industrial applicability of the invention in patent RU 2507672 solely based on the claims; that is, the description provided in the specification is sufficient and requires no further supplementation.

[0014] However, in order to meet this standard, it is necessary to provide a system carrier and install a piezoelectric generator on that carrier, but there is no such example in the world (see Section 3.2 below). In other words, the object to be applied, namely the "underwater vessel," is known, and the technical result is obvious, without the need for additional explanation of the conditions for creating the object or specifying the exact location for installing the piezoelectric generator.

[0015] 3.2. Obstacles to Expanding the Application Range of Piezoelectric Transducers Since the Curie brothers' experiments (1880), methods for generating electrical energy based on the piezoelectric effect have been known. Furthermore, since the late 19th century, the purpose and size of piezoelectric transducers have remained unchanged: for applied laboratory work or for demonstrating another principle. Such testing did not aim to develop industrial production; manufacturers responded only to the limited needs of scientific organizations or manufacturers of "small systems" and microelectronics. That is to say, even though no criticism should be made from the perspective of the physical nature of the phenomenon, the technology used to manufacture piezoelectric transducers has indeed not developed.

[0016] One reason why the Russian technical solution (patent RU 2507672) has not been widely used in other countries is the lack of understanding of the nature of the proposed method outside of Russia. However, the inventors believe that there are two main obstacles to expanding the application of piezoelectric transducers: First, it was previously believed that the effects could only be achieved through a single (“laboratory”) operation of the piezoelectric transducer or over a limited time. Secondly, there is a lack of interest in conducting research, which in turn leads to a lack of orders and production of components with the required characteristics and dimensions.

[0017] The information contained in the reference cited in Part 2, Section 3) is that high output power can be achieved when subjected to a force of only 25 Newtons (see paragraph 4 of that reference), but the decisive factor is the short operating time and single operation—sufficient to generate a spark but insufficient to store and transfer electrical energy. In other words, the well-known example of the operation of piezoelectric elements in lighters is also based on the view that the lighter needs to be constantly struck. This is not considered a rational activity, but the view that it is unsuitable to extract electrical energy from a lighter creates a biased attitude towards any other situation.

[0018] The responses from Russian scientific organizations and the Russian government can be found in the references cited in sections 5) and 6) of Part 2. Clearly, none of the responses concluded that the solutions were unsuitable for implementation based on test results. The conclusions of the Russian representatives were based on assumptions. However, this approach hinders the application of physical principles in industries where the operating conditions of piezoelectric generators (the opposite of those of lighters) persist. In other words, denying the practical benefits of the solution disclosed in patent RU2507672 is at least premature. On the other hand, from the perspective of the objectivity of the final conclusions, domestic efforts are insufficient to fully implement all the necessary work.

[0019] At the same time, the lack of necessary experimental work is not a drawback of the Russian invention disclosed in patent RU 2507672, nor does it preclude the international recognition of the patentability of the solution.

[0020] 3.3. Technical solutions for energy storage using piezoelectric generators Energy storage is always a problem when using piezoelectric generators, but this problem cannot be solved in the case of a single operation of a piezoelectric generator. Due to a reluctance to test and produce, the use of piezoelectric elements capable of operating under continuous variations in high-value mechanical loads remained unknown.

[0021] Stable operation of a piezoelectric element is possible when the conditions for repeated operation and the mechanical strength of the element itself are met, and these conditions must objectively occur. These conditions must work together; if any one condition is missing, the piezoelectric element cannot operate stably, and the task of storing electrical energy becomes meaningless.

[0022] In other words, the mechanical strength condition of the working element, together with the repeated application of the condition dF / dT≠O (change of force), characterizes the common fundamental feature of the form of "condition for converting mechanical energy into electrical energy", which is necessary for implementing the proposed method and operating the proposed system in the storage mode.

[0023] Even in the example using a lighter (reference 3 in Part 2), the result is identified as 750 kW of power obtained in a single operation of only one piezoelectric transducer (paragraph 3 of that reference). Furthermore, with a large number of piezoelectric generators operating simultaneously and repeatedly, their total power output would increase significantly, in which case the problem of local storage could be solved and electrical energy utilized.

[0024] This result was achieved by creating and using a storage system compatible with piezoelectric generators capable of withstanding loads significantly exceeding tens of Newtons (as exemplified by a lighter). The system is equipped with a real battery and a piezoelectric generator made of available materials; in this case, the piezoelectric generators are connected in parallel and assembled in a package with durable dielectric elements. Figure 3 Because of the use of durable dielectric elements to separate the piezoelectric elements, the proposed system will remain stable under loads up to several hundred Newtons (references in Sections 2, 7, 8, and 9 of Part 2). Depending on the system's output parameters, the battery load can be any DC power supply, for example, this corresponds to the battery characteristics known from references cited in Section 10 of Part 2.

[0025] The conditions for stable operation of piezoelectric generators allow for a simple method to control battery discharge and charging (see below) without requiring a forced shutdown of the entire system when charging one or more batteries is needed.

[0026] 3.4. Embodiments of the Invention Solving the problem of storing electrical energy (stable operation of piezoelectric generators) is feasible for submarines. Similar operating conditions that would enable piezoelectric generators may arise during the operation of other objects.

[0027] In port facilities ( Figure 6In the case of unloading and subsequent loading from only one Panamax vessel, up to 5,000 lifting operations must be performed in the "ship-to-shore" direction and up to 5,000 operations in the "shore-to-ship" direction, with a loaded TEU container weighing approximately 20,000 kg (see references cited in Section 2.7). During each lifting operation, a piezoelectric generator package mounted under the crane's base is activated by the load. Assuming an operation lasts 15 minutes or less, a single crane will "load" the piezoelectric generator package approximately 25-30 times in 6 hours.

[0028] The proposed system is not used if the transport ship is equipped with its own crane (reducer). However, the reducer occupies valuable space on the ship and cannot operate without electricity (from the ship itself or the port).

[0029] In the construction of land structures and shipbuilding enterprises, the total number of piezoelectric generator packages activated during the creation of a single facility corresponds to the weight of all materials lifted during the entire construction period divided by the lifting capacity of a conditionally usable lifting device (see Part 2, pp. 8, 9, cited literature). In this case, the mass of materials lifted during shipbuilding corresponds to the design displacement, while in land structure construction, the mass of the structure corresponds to calculations based on foundation requirements, and can also be determined from the design project. In maintenance work involving the replacement of units or components, the mass of all materials lifted must not be less than twice the mass of the component to be replaced.

[0030] Importantly and obviously, the frequency of loading operations can only be accurately determined when summarizing work results, thereby accurately determining the activation frequency of the piezoelectric generator; this value will vary in different industries and can only serve as a planning benchmark for a day or a month.

[0031] All of the aforementioned cranes exist in reality, as do "underwater vessels" (see Section 3.1). It is also known that high-capacity cranes can only be used after all the necessary work has been done to create a permanent foundation or temporary base in the form of a bridge pier structure, railway embankment, or other structure connecting to the natural ground, thus preparing the installation site. Furthermore, other types of bases lacking these capabilities are not used in transportation and construction companies if a single crane is required to move loads weighing tens of tons.

[0032] The structure of such devices in transportation and construction involves the use of multi-layered seals made of various materials throughout the entire potential range of crane movement. This is done for the purpose of installing equipment such as power supply, communication, fire protection, and other systems at different depths. These conditions are feasible in practice—their implementation is independent of the application of the invention (they are objectively real). Using the same similar method in the base structure of lifting devices, additional recesses, channels, or niches can be created for the placement and secure mounting of piezoelectric generators, which can be pre-assembled on their own bases for connection purposes.

[0033] In other words, the purpose of using such lifting devices as foundations, their rigid connection to the ground, and the uniform method of constructing them in seaports or river ports, as well as shipbuilding, construction, or repair sites—combined with the technology for installing additional equipment within such structures, including for securing other components—commonly characterize the inventive feature referred to as the “lifting device base.” This feature is common to various specific embodiments and also allows for the placement of a piezoelectric generator “below the lifting device base.” Here, defining the “technical installation method” is not the purpose of the proposed invention, nor is it within the scope of protected rights, as is the case with the evaluation of the invention disclosed in patent RU2507672 (see also the references cited in Section 1, Section 6).

[0034] The feasibility of battery deployment in transportation and construction companies is obvious. Batteries are indeed installed and actively used on submarines (see references cited in Part 2, Section 2).

[0035] Therefore, in terms of meeting the standards of industrial practicality, the conditions for enabling a piezoelectric generator installed under the base of a crane (whether in a port, shipyard, tower crane or other type) are no less favorable than those for installing a piezoelectric generator on a submarine (see claims 1, 2, and 3 of patent RU 2507672).

[0036] Part 4 Job Description Chart and marker locations are displayed: - Figure 1 - The relationship between external water pressure and submarine diving depth; changes in depth lead to changes in key dimensions; - Figure 2 -The contact point between the hull and the deck (1), where the piezoelectric generator is mounted on the deck, as shown in the reference cited in Part 2, 1); - Figure 3 - A piezoelectric generator (2) includes a piezoelectric element with a spring, the spring being used to buffer external loads and reduce wear on the piezoelectric transducer. - In this case, in order to increase the number of components working simultaneously, the piezoelectric generators are assembled in a package. To ensure strength under external mechanical shock, the piezoelectric generators are separated by durable dielectric elements (4). Three piezoelectric generators (label 2) are shown in one package. The number of packages in one operating assembly (label 3) depends on the usage conditions. The parallel connection of the piezoelectric generators with the battery is shown. - Figure 4 - Electrical energy (U3) is transferred from the piezoelectric generator package (3) to the battery (5) via a diode gate and a switching unit (6), which is controlled by a controller (7) configured to provide a conditional maximum and conditional minimum value for one or more battery condition parameters (e.g., charge, electrolyte density, voltage, current, power or others). - Figure 5 -Automatic operation of the controller (7) and switch unit (6) for controlling battery charging and discharging; - The parallel connection of the battery with the piezoelectric generator (voltage U3 at the input of each battery - Figures 3 and 4) and the load is shown; - Figure 6 - The proposed system is used in marine and river transport facilities; switch (8); shows the non-operating state of the system; - When all batteries are disconnected from the piezoelectric generator, the system will only operate after all batteries have been fully discharged, and the continuous operation of the system will cease (claim 4). - To put the system into operation, it is recommended to pre-install a rechargeable and dischargeable battery; - Figure 7 - It is necessary to compensate for uneven load distribution; - Figure 8 - Piezoelectric generator enclosure installed in a niche below the crane.

[0037] Figure 8 This diagram illustrates the standby state of the piezoelectric generator using the shock absorber when the piezoelectric generator enclosure is stationary. The actual base height (h3) of the piezoelectric generator enclosure was selected before the system was put into operation. The mechanical action begins to be transmitted from the moment the crane weight effectively increases as the lifting cable tensions (lifting the load off the ground). To operate when the load is off the surface, the shock absorber, when unloaded, is technically installed with no gap (H3) between it and the upper surface of the recessed niche. * = h1 + h2 + h3), when installed without shock absorbers, there must be no clearance at the unloaded piezoelectric generator (H). * = h2 + h3).

[0038] The influence feature of "working in a position where interaction is possible" is also used in the invention according to patent RU2507672.

[0039] In this case, the proposed invention does not require the piezoelectric generator enclosure to be directly positioned under the crane. Figure 6 and Figure 8 (This effect is illustrated) It does not require only one package to be arranged in one location, nor does it require the package to have a large size, such as the size of a crane base. The process of manufacturing the piezoelectric transducer package, its base, dielectric elements and dampers, and determining their characteristics does not constitute part of the problem solved by the proposed invention (the same is true for the method and production system according to patent RU2507672).

[0040] As the load is lifted, the crane transmits the increased pressure through its base to the piezoelectric generator enclosure. Spring dampers reduce the load and compensate for the uneven distribution of mechanical load caused by contact with the non-flat surface of the submarine hull, contact with the non-horizontal platform (α) of the lifting device, and the horizontal movement of the load (I, II). Figure 7 Furthermore, during lifting operations, the mechanical load on all components encapsulated in the piezoelectric generator will oscillate around a certain average value (for a single operation), and this load is compensated for using dampers of the same size and stiffness.

[0041] The inventors do not require the use of shock absorbers with the same stiffness when the system is installed on a submarine (see claims 4, 5, 6).

[0042] The DC power U3 received from the piezoelectric generator package (3) is fed to the battery (5) by the system through diode gates and switching unit (6). To increase the system's operating time (discharge time) in DC power mode, the batteries are grouped into sets, which must be connected to different electrical devices (not shown, as the devices are not part of the system), and the discharge in different sets will occur at different rates. That is, at any given moment, the states of the different battery sets will be different, and the different sets will have different remaining charges. The same state will be observed for the battery sets used as the main power supply and backup power supply for a single electrical device.

[0043] Figure 5 The display shows two batteries, 5A and 5B, from different groups. Battery 5A is nearly fully discharged, while battery 5B is completing its charging process. Controller 7 compares the current values ​​of the battery status parameters with the minimum and maximum values ​​set by the operator before the system was put into operation.

[0044] When the battery discharges at 5A, the controlled parameter value reaches its minimum value after 7 minutes, and the controller generates two control signals: 1) Disconnect the 5A battery from the electrical equipment; 2) And connect it to the switch unit 6 so that it can be connected to the piezoelectric generator to start charging.

[0045] Another battery, 5B, is charging and disconnected from the load during charging. When the battery is charging, the value of its monitored parameter becomes the maximum value, 7 max. The controller sends a command to the switching unit to disconnect it from the piezoelectric generator and a command to connect it to the electrical equipment. Therefore, the charging of battery 5B stops and it begins to discharge.

[0046] The same method is used to control the two sets of batteries, which serve as the primary and backup power sources for a single electrical device (5A and 5B).

[0047] If a component needs to be replaced or repaired, switch (8) disconnects the piezoelectric generator from the battery, as shown in Figure 6.

[0048] Inventor's conclusion: 1) The technological achievement is to provide uninterrupted DC power for local applications; - In this case, a specific solution was implemented (for the first time achieving its intended purpose): a) storing electrical energy during piezoelectric generator operation, b) automatically switching between battery charging and discharging without forcibly disconnecting the entire system from the load; 2) The innovation lies in the fact that, under different operating conditions of the piezoelectric generator, the main technical effect cannot be achieved without automatically changing the charge and discharge cycle of the individual batteries in the system; and the system is indeed independent of other power sources. 3) Industrial applicability - practical feasibility (1) Robust piezoelectric generators and dielectric elements and shock absorbers that meet specific mechanical load conditions can be manufactured using existing materials and available technologies (synthesis, molding, pressing, etc.); (2) The system can be installed on submarines and facilities using lifting equipment. 4) Novelty – No method or independent system for storing electrical energy using the piezoelectric effect has been proposed before.

[0049] Features and advantages of the present invention: 1) Automatically alternates between charging and discharging cycles of any battery without disconnecting the entire system from the electrical equipment. This ensures uninterrupted power supply throughout the entire period the battery is connected to the piezoelectric sensor, including replacement of components due to wear or failure. 2) The piezoelectric generator operates stably and repeatedly under the same type of mechanical load. 3) The manufacture and use of piezoelectric generators made from readily available piezoelectric materials. 4) Consider replacing the shock absorbers due to wear and tear on the piezoelectric generator. 5) A variety of real batteries with optimal characteristics can be selected. 6) The components are arranged compactly. 7) Operate away from areas of social activity. 8) The predictability of the results greatly simplifies the calculation and experimental work for manufacturing piezoelectric generators compatible with real batteries.

[0050] Other known solutions (such as mainline railways, revolving doors, escalators, and dance floors) do not have this capability and require extensive research (to determine the combination of piezoelectric materials with the desired sensitivity), which increases the cost of experimental work and the cost of manufacturing transducers. Claims (as amended under Article 19 of the Treaty) 1. A system for storing electrical energy from piezoelectric transducers, the system comprising at least two piezoelectric transducers and at least two energy storage devices electrically connected to the piezoelectric transducers, characterized in that: The piezoelectric transducers are assembled into a package and connected in parallel, and the energy storage devices are connected in parallel. The system includes a switching unit for connecting the storage device to the piezoelectric transducer, disconnecting the storage device from the piezoelectric transducer, connecting the storage device to an electrical device, and disconnecting the storage device from the electrical device. Furthermore, a switch is provided between the piezoelectric transducer and the storage device to disconnect the piezoelectric transducer from the battery when a component of the system needs to be replaced or repaired. The piezoelectric transducer is encapsulated and arranged below the base of a lifting device that performs the same type of operation. The system includes a controller for generating control signals to initiate charging and discharging of the energy storage devices. The controller provides switching between charging and discharging for individual storage devices based on a comparison of the current charge value of each storage device with a predetermined reference value for the charging level. This allows charging to stop and the storage device to be connected to the electrical device when it approaches a reference value indicating full charging, and the storage device to be disconnected from the electrical device and charging to begin when it approaches another reference value indicating full discharging. Apart from the charging current, the switching unit and the system as a whole do not use any other power source. 2. The system according to claim 1, wherein the system comprises an enclosure of at least two piezoelectric transducers mounted below the base of the lifting device. 3. The system according to claim 2, wherein the packages comprise the same number of piezoelectric transducers. 4. The system according to claim 2, wherein the packages comprise a different number of piezoelectric transducers. 5. The system according to any one of claims 2 to 4, wherein the encapsulation is arranged at a position below the base of the lifting device. 6. The system according to any one of claims 2 to 4, characterized in that the encapsulations are arranged at different locations below the base of the lifting device. 7. The system according to any one of claims 1 to 6, wherein the storage devices are divided into groups, each group comprising at least one storage device. 8. The system according to claim 7, wherein these groups of storage devices are connected to different electrical devices. 9. The system according to claim 7, characterized in that two sets of storage devices are used as the main power supply and backup power supply for a single electrical device.

Claims

1. A method for storing electrical energy obtained from a piezoelectric transducer, comprising: under conditions where mechanical energy is converted into electrical energy: If energy storage devices and piezoelectric transducers are installed and used on underwater vessels, they can operate continuously as the diving depth of the underwater vessel changes, or If the energy storage device and the piezoelectric transducer are arranged and used in seaports or river ports, as well as in facilities for the construction or repair of land structures or ships, they are repeated multiple times during operation under load.

2. The method according to claim 1, characterized in that, When used in the construction or repair facilities of seaports or river ports, as well as land structures or ships, the piezoelectric transducer is arranged below the base of the lifting device and maintains a rigid connection between the base of the lifting device and the ground.

3. The method according to claim 2, characterized in that, The piezoelectric transducer is fixed in a position such that the transmission of mechanical action from the lifting device is possible when the load is lifted off the surface.

4. The system as described, comprising at least two piezoelectric transducers and at least two energy storage devices electrically connected to the piezoelectric transducers, characterized in that... The piezoelectric transducers are connected in parallel with each other. The energy storage devices are connected in parallel with each other. The system operates without connection to other power sources in both energy storage mode and electric power mode, and In DC power mode, the system will be used continuously until all energy storage devices are disconnected from the piezoelectric sensors.

5. The system according to claim 4, characterized in that, For use in seaports or river ports, as well as in facilities or land structures used for building or repairing ships, the piezoelectric transducers are assembled into a package comprising at least two piezoelectric transducers separated from each other by rigid dielectric elements.

6. The system according to claim 5, characterized in that, The mechanical action on the piezoelectric transducer is transmitted through spring dampers, which have the same stiffness and size, and each piezoelectric transducer is provided with one damper.

7. The system according to any one of claims 5 and 6, characterized in that, The piezoelectric transducer is installed below the base of the lifting device, and the piezoelectric transducer is not limited to being arranged in only one position with only one encapsulation or only arranged directly below the lifting device.

8. A method of controlling the system, comprising simultaneously charging one energy storage device included in the system and discharging another energy storage device included in the system, without disconnecting the entire system from the electrical equipment.

9. The method according to claim 8, characterized in that, The storage devices are divided into groups, each group including at least one storage device, and different groups are connected to different electrical devices, or two groups serve as the main power supply and backup power supply for a single electrical device.

10. The method according to claim 9, characterized in that, The switching of charging and discharging of a single storage device is performed by comparing the current value of a selected parameter of the storage device with a predetermined maximum control value and a minimum control value of the selected parameter, such that at one control value of the selected parameter, charging is stopped and the storage device is connected to the electrical device, and at another control value of the selected parameter, the storage device is disconnected from the electrical device and charging begins.

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