System for storing electrical energy generated by piezoelectric transducers

Abstract

The invention relates to a method and system for storing electrical energy produced by piezoelectric generators. The technical result, which consists in the continuous operation of the system, is possible when the transition between charge and discharge cycles in storage batteries occurs without disconnection from consumers. This is enabled by conditions for mechanical-to-electrical energy conversion which are continuously maintained over a long period of time or which recur repeatedly, as well as by the nature of a mechanical load that permits the storage of electrical energy with high values. The proposed invention also aims to encourage representatives of industrial enterprises to engage in experimentation so as to broaden the list of piezo material-based products capable of satisfying all warranted demands (see point 3.2 of the description), since it is only through the efforts of all interested parties that access to an ever-increasing volume of cutting-edge technical achievements will be provided, as all parties to the Patent Cooperation Treaty of 19 June 1970 "desiring to make a contribution to the progress of science and technology" will agree.

Description

[0001] A SYSTEM FOR STORING ELECTRIC ENERGY GENERATED BY PIEZOELECTRIC TRANSDUCERS

[0002] Section 1. Field of technology.

[0003] The purpose of the device is to accumulate electrical energy, to accumulate electrical energy using piezoelectric generators, and to control it in the DC source mode.

[0004] Section 2. Sources used, state of the art:

[0005] 1) invention according to the patent of the Russian Federation 2507672, author Goydin N.T., quick access to the address - https: / / wwwl.fips.ru / registers-doc-view / fips_servlet?DB=RUPAT&DocNumber=2507672&TypeFile=html,

[0006] 2) technical characteristics of the Hai Kun class submarine, China,

[0007] - available at - https: / / en.wikipedia.org / wiki / Hai_Kun-class_submarine,

[0008] - The author provides a widely used example of a piezoelectric generator in operation, as well as responses from organizations associated with the Government of the Russian Federation:

[0009] 3) article “Piezogenerators”, author Geiner A.F., Russia, available at the address - https: / / avrora-binib.ru / stati / pezokeramicheskie_istochniki_vysokogo_napryazheniya / ?ysclid=lrc5jhir51739177 88,

[0010] 4) response from the head of the scientific institute dated 21.11.2013, Russia,

[0011] - available at - https: / / znamenatel2-011. livejoumal.com / 1606.html,

[0012] 5) response from the Ministry of Industry and Trade of Russia dated 05.12.2016,

[0013] - available at - https: / / znamenatel2-011.livejoumal.com / 1963.html,

[0014] 6) response from the Russian Ministry of Defense dated September 6, 2018,

[0015] - available at - https: / / znamenatel2-011.livejoumal.com / 2050.html ;

[0016] - below the author indicates sources of information about existing technical structures, the operation of which is associated with long-term and repeated changes in load:

[0017] 7) current characteristics of Panamax class vessels, TEU containers and berthing cranes,

[0018] - available at - https: / / en.wikipedia.org / wiki / Container_ship,

[0019] 8) current characteristics of tower cranes (using the example of SFT250C / T7520-16, China), available at https: / / www.sanyglobal.com / ru / product / crane / tower_crane / 96 / 759 / ,

[0020] 9) current characteristics of shipbuilding cranes, using the example of products from Henan Zhonggong Group, China,

[0021] - available at - http: / / lifting-crane.ru / 2-gantry-crane / 209225 / ,

[0022] 10) Current characteristics of lithium-ion battery, China,

[0023] - available at - https: / / www.aokly-battery.com / ru / product / alfp-48200.html.

[0024] Technical solutions are known separately for various methods of using piezoelectric generators (IZ 2665682 RU), including when rotating piezoelectric generators (IZ 2264687 RU), and separately for methods of storing electrical energy (below). In the United States, US 4511818 A of 16.04.1985 and US 7830071 are known for various aspects of using piezoelectric elements.

[0025] B2 09.11.2010. However, the generator is not intended for storing electrical energy.

[0026] The author proposes an unknown solution whereby the operating conditions of piezoelectric generators remain stable, allowing for a technical result in the form of an uninterruptible source of electrical energy obtained from piezoelectric generators.

[0027] However, the proposed solution does not use

[0028] - other power sources, other functional (current-carrying) elements of the general structure (containers, boxes, supports), a fault detection system, a human presence monitoring system - patent IZ 2575862 RU, where (in contrast to the proposal in the present application) the accumulation system is connected in parallel with the load (see Fig. 1 in the source); the system is also connected in the descriptions of patent 2512880 RU and application 2012111677 RU;

[0029] - a tracking system (web server, Wi-Fi router) for collecting statistical data and dividing the work of the entire system into cycles - patent IZ 2749548 RU, where optimization of work occurs “every three days” (see description of phase-4 in the source);

[0030] - control system based on temperature values ​​- application IZ 2012107169 RU.

[0031] The beneficial effect, together with the absence of other specified effects on the characteristics of “accumulation” and “works continuously”, has not been previously applied.

[0032] Section 3. Disclosure of the essence of the invention in specific areas.

[0033] 3.1. It is well known that for the conversion of mechanical energy into electrical energy using piezoelectric materials, the following condition is required: dF / dT * 0 (not equal to zero),

[0034] - where (dF / dT) is the differential force over time (see also p.4 of Section 2),

[0035] - that is, not only force is required, but also a change in force. A method for generating electricity for a submarine or other objects capable of controlled movement at depth is known from the source under Section 2, paragraph 1 (patent 2507672 RU), when the operating condition of the piezoelectric transducer is met continuously over a long period.

[0036] When submerged, a submarine constantly experiences external pressure from the seawater. Changes in submersion depth cause fluctuations in its overall linear dimensions (Figs. 1, 2).

[0037] An example can be seen at 28-30 minutes in the film “Down Periscope” (1996, 20th Century Fox, USA).

[0038] The ship's hull transmits increasing seawater pressure to a piezoelectric element (numbered 2 in Fig. 2), which is rigidly connected to the deck (1). Every 10-meter change in depth results in a pressure change of 10 N / m² (1 kgf / cm²). Thus, regardless of the submarine's diving depth, the piezoelectric generator's operating conditions remain constant throughout the change in depth. This condition can be applied to depths of several hundred meters (see source, item 2, Section 2).

[0039] Patent 2507672 RU discloses a system and method for "generating electrical energy" using piezoelectric transducers that receive mechanical action through shock absorbers of varying stiffness and are mounted on structural elements of a submarine (clauses 1, 2, 3, 7, and 8 of the formula IZ 2507672). Moreover, the features "mounted on the deck," "rigid connection," "ability to interact with the vessel's hull," "placed on the base," "transmitting seawater pressure," and

[0040] "mechanical loading" is sufficient to disclose the relationship with the result of generating electrical energy "with a change in immersion depth" without specifying any quantitative indicators in terms of the dimensions and orientation of the said elements.

[0041] However, the solution for patent 2507672 RU does not propose a method for accumulating electrical energy obtained using piezoelectric transducers.

[0042] That is, methods for generating electricity from piezoelectric transducers are known, but a solution for harvesting such electricity is unknown. Also unknown is the use of a stack of piezoelectric transducers separated by a rigid dielectric for operation under high mechanical loads.

[0043] For the consideration of the author’s proposal, the following circumstance is of essential importance: - the conclusion about the industrial applicability of the invention according to patent 2507672 RU could not be based solely on the claims of the formula, that is, the explanations of the description are sufficient without additions,

[0044] - however, to meet this criterion it is necessary to create a system carrier and install a piezo generator on the carrier, but no examples have been or have appeared in the world (see subsection 3.2 below);

[0045] - that is, the object of application, the “underwater vessel”, is known, and the technical result is obvious without additional explanations about the conditions for creating the object and without specifying the specific location for installing the piezo generators.

[0046] 3.2. Interference with the expansion of the scope of application of piezoelectric transducers.

[0047] The method of generating electricity using the piezoelectric effect has been known since the Curie brothers' experiment (1880). Also, since the late 19th century, the manufacturing purposes and sizes of piezoelectric transducers have remained largely unchanged—for applied laboratory work or for demonstrating yet another principle. Such tests do not aim to develop industrial production, and manufacturers respond only to limited demand from scientific organizations or manufacturers of "small systems" and microelectronics. Thus, even though any criticism from the standpoint of the physical nature of the phenomenon is impossible, piezoelectric transducer manufacturing technologies are not advancing.

[0048] One of the reasons why the Russian technical solution (patent 2507672) did not gain distribution in other countries was the unknown nature of the proposed method outside of Russia, but the author considers the following two main obstacles:

[0049] - firstly, a persistent idea about obtaining an effect only with a single (“laboratory”) triggering of the piezo transducer or about triggering for a limited time,

[0050] - secondly, the lack of interest in conducting research and, as a consequence, the lack of ordering and production of elements with the required characteristics and dimensions.

[0051] The source for paragraph 3 of Section 2 contains information that, with a force of only 25 newtons (see paragraph 4 in the source), the output power can reach high values, but the decisive factor is the short operating time and single actuation—sufficient to generate a spark but insufficient to accumulate and transmit electrical energy. Thus, the well-known example of a piezoelectric element in a lighter has also spread the opinion in favor of the need for constant clicking of a lighter, which is rightly not considered a rational practice. However, the opinion that extracting electrical energy from a lighter is impractical fosters a biased attitude toward any other case. The sources for paragraphs 5 and 6 of Section 2 contain responses from a Russian scientific organization and the Russian Government. It is obvious that neither response substantiates the conclusion about the impracticality of implementation based on test results. The conclusions of the Russian representatives are based on assumptions.However, this approach hinders the application of the physical principle in industries where the conditions for piezoelectric generator operation (unlike those of a lighter) are CONSTANTLY present. Therefore, denying the practical utility of the solution in patent 2507672 RU is, at the very least, premature. On the other hand, it is impossible to conduct all the necessary work at home to ensure the objectivity of the final conclusion.

[0052] At the same time, the absence of the necessary experimental work is not a disadvantage of the Russian invention under patent 2507672 RU and did not prevent the recognition of the patentability of the solution.

[0053] 3.3. Technical solution for energy storage using piezoelectric generators.

[0054] When using piezoelectric generators, the problem of storing electrical energy always arises, but this is impossible to solve under conditions of a single piezoelectric generator activation. Due to the lack of testing and production, it is unknown to use piezoelectric elements capable of operating under continuously changing, high mechanical loads.

[0055] Stable operation of piezoelectric elements is possible when conditions for repeated activation of the piezoelectric elements and the strength of the piezoelectric elements themselves are met, and these conditions must arise objectively. These conditions must act in concert, and if any one of these conditions is missing, stable operation of the piezoelectric elements is impossible, and the purpose of storing electrical energy becomes meaningless.

[0056] That is, the condition of the strength of the working elements together with the multiple repetition of the condition dF / dT * 0 (change in force) characterize a common essential feature in the form of a “condition for the conversion of mechanical energy into electrical energy”, which is necessary for the implementation of the proposed method and the operation of the proposed system in the accumulation mode.

[0057] Even in the lighter example (Section 2, Sec. 3), the result of obtaining 750 kilowatts of power (see Sec. 3 in the source) from a single actuation of just one piezoelectric transducer is recognized. And with the simultaneous and repeated actuation of a large number of piezoelectric generators, their overall performance will increase significantly, and in this case, it is already possible to use electrical energy to solve the problem of local accumulation. This result is achieved by creating and using an accumulation system compatible with piezoelectric generators that are systematically subjected to a load significantly exceeding tens of newtons (as in the lighter example). The system is equipped with batteries made from real materials and piezoelectric generators made from readily available materials; the piezoelectric generators are connected in parallel and assembled into a package with durable dielectrics (Fig. 3). By using durable dielectrics to separate the piezoelectric elements, the proposed system will remain stable under loads of up to several hundred kilonewtons (Sec.2, 7, 8, 9 Section 2). Depending on the output parameters of the system, the load for the batteries can be any direct current consumers, which corresponds, for example, to the characteristics of the battery known from the source according to paragraph 10 of Section 2.

[0058] The conditions for stable operation of piezoelectric generators make it possible to propose a simple method for controlling the discharge and charge of batteries (below), which will eliminate the forced shutdown of the overall system when it is necessary to charge one or more batteries.

[0059] 3.4. Implementation of the invention.

[0060] The problem of energy storage (stable operation of piezoelectric generators) can be solved on a submarine. Similar conditions for piezoelectric generator operation arise during the operation of other objects.

[0061] In port facilities (Fig. 6), in the case of unloading and subsequent loading of only one Panamax class transport, it is necessary to perform up to 5,000 lifting operations in the "ship-to-shore" direction and up to 5,000 "shore-to-ship" operations, while the mass of one loaded TEU container is approximately 20,000 kg (see source for point 7 of Section 2); a bank of piezo-generators, located under the base of the crane, will be triggered with this load during each lifting operation. If the time of one operation is considered to be 15 minutes or less, then in 6 hours one crane will "load" one bank of piezo-generators approximately 25-30 times.

[0062] If a transport vessel is equipped with its own crane (gearbox), the proposed system is not used. However, the gearbox takes up valuable space on the vessel and cannot operate without electrical power (either from the vessel or from the port).

[0063] In the construction of land-based structures and shipbuilding facilities, the total number of piezoelectric generator package activations during the creation of a single object will correspond to the weight of all cargo lifted during the entire construction period, divided by the lifting capacity of one conventionally occupied lifting device (see sources for paragraphs 8 and 9 of Section 2). In this case, the mass of materials lifted during ship construction corresponds to the design displacement, and in the construction of land-based structures, the mass of the structure is also known from the design—it corresponds to the calculation based on foundation requirements. During repairs involving the replacement of units or components, the mass of all materials lifted cannot be less than twice the mass of the elements to be replaced.

[0064] It is essential and obvious that the precise determination of the frequency of loading operations and, consequently, the frequency of operation of piezo generators, is possible only when summing up the results of work; in different industries this value will be different and can serve only as a planned guideline for a day or a month.

[0065] All of the aforementioned cranes exist in reality, as does the "submarine vessel" (see subsection 3.1). It is also known that the use of a high-capacity crane is only possible after the site has been prepared, including all necessary work to create a permanent foundation or temporary base in the form of a pier structure, railway track, or other structures connected to the natural soil. Furthermore, if a single crane is required to handle loads of up to several tens of tons, then other foundations that do not have these features are not used in transportation and construction companies.

[0066] The design of such structures in transport and construction applications involves the use of multiple layers of seals made of various materials across the entire range of crane travel for the installation of equipment for power supply, communications, fire extinguishing, and other purposes at varying depths. Such conditions are feasible in practice—they are met regardless of the application of the invention (they objectively exist). Using similar, uniform methods, it is possible to create additional recesses, channels, or niches in the base structure of the lifting device for the placement and secure mounting of piezoelectric generators, which can be pre-assembled on their own base for switching.

[0067] That is, the purpose of the foundations of similar lifting devices, their rigid connection to the ground, and the uniform methods of their creation in sea or river ports and at ship or land structure construction or repair sites, along with the technology for installing additional equipment within the structure of such structures, including for the fixed fastening of other elements, characterize such a feature of the invention as the "lifting device base," which is common to specific implementation forms and also provides for the possibility of placing piezoelectric generators "under the lifting device base." However, the definition of "installation methods" is not the objective of the proposed invention and does not relate to the scope of protected rights, as is the case with the evaluation of the invention under patent 2507672 RU (see also the source under paragraph 6 of Section 1).

[0068] The possibility of placing batteries in transport and construction enterprises is obvious, and batteries have been placed and are actually used on submarines (see source for paragraph 2 of Section 2).

[0069] Therefore, in terms of compliance with the industrial applicability criterion, the conditions for the operation of piezoelectric generators under the base of a crane (port, slipway, tower, etc.) are not inferior to the conditions when placing piezoelectric generators on a submarine (see paragraphs 1, 2, 3 of the formula for patent 2507672 RU).

[0070] Section 4. DESCRIPTION OF WORK.

[0071] The diagrams and marked positions show:

[0072] - Fig. 1 - dependence of the outside water pressure on the hull of a submarine on the depth of its immersion; a change in depth causes a change in the main dimensions;

[0073] - in Fig. 2 - the contact points of the hull and the deck (1), on which the piezo generators are installed, as shown in the source according to paragraph 1 of Section 2;

[0074] - in Fig. 3 - a piezo generator (2), consisting of piezo elements with springs for cushioning the external load and reducing wear of the piezoelectric transducers,

[0075] - in this case, to increase the number of simultaneously operating elements, the piezo generators are assembled in a package and, to ensure strength under external mechanical impact, are separated by durable dielectrics (4); 3 piezo generators are shown in one package (under number 2), the number of packages in one operational assembly (under number 3) depends on the conditions of use; parallel connection of piezo generators to batteries is shown;

[0076] - in Fig. 4 - the transmission of electrical energy (U3) from the package of piezo-generators (3) to the battery (5) through a diode gate and a switching unit (6), which is controlled by a controller (7), which is configured to the conditionally maximum and conditionally minimum values ​​of one or more parameters of the battery state, such as capacity, electrolyte density, voltage, current, power or others;

[0077] - in Fig. 5 - automatic operation of the controller (7) and the switch block (6) for controlling the charging and discharging of batteries;

[0078] - parallel connection of batteries to piezo generators is shown (at the input of each battery the voltage is U3 - Fig. 3, Fig. 4) and to the load;

[0079] - Fig. 6 - the area of ​​application of the proposed system in sea and river transport; switch (8); the inoperative state of the system is shown; - when all batteries are disconnected from the piezo generators, the operation of the system will be possible only until all batteries are completely discharged, and continuous operation of the system will cease (clause 4 of the formula);

[0080] - to put the system into operation, it is advisable to pre-install both charged and discharged batteries;

[0081] - in Fig. 7 - the need to compensate for uneven load distribution;

[0082] - in Fig. 8 - installation of a package of piezo generators in a niche under a crane.

[0083] Fig. 8 shows the state of readiness of the piezo-generators for operation using shock absorbers, when the piezo-generator stack is stationary. Moreover, the height of the piezo-generator stack's base (h3) is selected before putting the system into operation. The mechanical action is transmitted starting from the moment when the crane's weight increases already during tension of the lifting rope (lifting of the load from the surface). To trigger at the moment of lifting of the load from the surface, the shock absorbers, in the unloaded state, are installed without a gap with the upper surface of the technological niche (H* = hl + h2 + h3), and when installed without using shock absorbers, there should be no such gap at the unloaded piezo-generator (H* = h2 + h3).

[0084] The feature of influence “in a working position in which interaction is possible” is also used in the invention according to patent 2507672 RU.

[0085] Moreover, the proposed invention does not require placement of a piezoelectric transducer stack directly under the crane (the effect is shown in Fig. 6 and Fig. 8), does not require placement of only one stack in one location, and does not require placement of a large stack, comparable, for example, to the crane's base area. The manufacturing process of the piezoelectric transducer stack, its base, dielectrics, and shock absorbers, as well as determining their characteristics, are not the objectives of the proposed invention (as is the case with the generation method and system according to patent 2507672 RU).

[0086] When lifting a load, the crane transmits increased pressure to the piezoelectric generator stack through its base. The spring shock absorber reduces the load and compensates for the uneven distribution of mechanical load (Fig. 7) that occurs upon contact with the non-flat surface of the submarine hull, upon contact with the non-horizontal platform of the lifting device (a), and during the horizontal movement of the load (I, II). Moreover, during the lifting operation, the change in mechanical load for all elements of the piezoelectric generator stack will have an oscillatory nature around a single average value (for a single operation), and shock absorbers of identical dimensions and rigidity are used to compensate for this load.

[0087] The author does not state the requirement to use shock absorbers of the same rigidity when placing the system on a submarine (see paragraphs 4, 5, b of the formula).

[0088] The direct current (DC) received from the piezoelectric generator stack (3) with voltage U3 is fed to the battery (5) via the diode gate and switching unit (6). To increase the system's operating time in DC power supply mode (discharge time), the batteries are grouped together. These groups must be connected to different consumers (not shown—the consumers are not part of the system), and the discharge in each group will occur at different rates. This means that the state of each battery group at any given time will be different—different groups will have different remaining capacities. This same state will apply to battery groups intended for the primary and backup power supply of a single consumer.

[0089] Fig. 5 shows two batteries from different groups—5A and 5B—with the 5A batteries nearing full discharge, while the 5B batteries are completing the charging process. Controller 7 compares the current battery status parameter values ​​with the minimum and maximum values ​​set at the operator's discretion before commissioning the system.

[0090] When the 5 A battery is discharged, the value of the controlled parameter reaches the minimum value - 7 min, and the controller will generate two control signals:

[0091] 1) to disconnect the 5 A battery from consumers

[0092] 2) and into switching unit 6 for connection to piezo generators to start charging.

[0093] The other 5V battery is charging and disconnected from the load during charging. Once the battery is charged, its controlled parameter reaches its maximum value of 7mAx, and the controller sends a command to the switching unit to disconnect from the piezoelectric generators and reconnect to the load. Charging of the 5V battery will cease, and discharging will begin.

[0094] The same method is used to control two groups of batteries, which are used as the main and backup power sources (5 A and 5 V) for one consumer.

[0095] If it is necessary to replace or repair the components, the switch (8) disconnects the piezo generators from the batteries, as shown in Fig. 6.

[0096] Conclusions of the author of the invention:

[0097] 1) the technical result is the production of an uninterruptible source of direct current for local use; - in this case, specific solutions are used (implemented for the first time with the given purpose): a) accumulation of electrical energy during the operation of piezoelectric generators, b) automatic switching of the charge and discharge of batteries without forced disconnection of the entire system from the load;

[0098] 2) an inventive step - under other operating conditions of piezoelectric generators, without automatic alternation of the charge and discharge cycles of a separate battery included in the system, it is impossible to achieve the main technical result; moreover, the system does not depend on other sources of electrical energy;

[0099] 3) industrial applicability - practical feasibility (1) in the manufacture using existing materials and available technologies (synthesis, molding, pressing, etc.) of durable piezoelectric generators, as well as dielectrics and shock absorbers that meet the conditions of a specific mechanical load, (2) when placing the system on a submarine and at facilities using lifting devices;

[0100] 4) novelty - the method and independent system for accumulating electrical energy using the piezoelectric effect have not been proposed previously.

[0101] Features and advantages of the proposed invention:

[0102] 1) automatic change of charge and discharge cycles of any battery without disconnecting the entire system from consumers, which will ensure uninterrupted power supply during the entire time when the batteries are connected to piezoelectric converters, including until the replacement of components due to wear or malfunction,

[0103] 2) stable repetition of the operation of piezoelectric generators with the same type of mechanical load,

[0104] 3) production and use of piezoelectric generators from available piezoelectric materials,

[0105] 4) the possibility of replacing shock absorbers taking into account the wear of piezo generators,

[0106] 5) a wide selection of real batteries with optimal characteristics,

[0107] 6) compact arrangement of components,

[0108] 7) work away from places of social activity,

[0109] 8) predictability of the result, which significantly simplifies the calculation and experimental work for the production of piezoelectric generators compatible with real batteries.

[0110] Other well-known proposals (for example, mainline railways, turnstiles, escalators, dance floors) do not have such features, and indeed require more time for research (determining the option of combining piezoelectric materials with high sensitivity), which increases the cost of experimental work and the cost of manufacturing transducers.

Claims

The AMENDED CLAUSE OF THE INVENTION was received by the International Bureau on April 17, 2025 (17.04.2025) Formula 1. An electric energy storage system using piezoelectric transducers, comprising at least two piezoelectric transducers and at least two electric energy storage devices connected to the piezoelectric transducers by an electric communication line, characterized in that the piezoelectric transducers are assembled in a package and connected in parallel to each other, the electric energy storage devices are connected in parallel to each other, and the system contains a switching unit for connecting the storage devices to the piezoelectric transducers, disconnecting the storage devices from the piezoelectric transducers, connecting the storage devices to consumers and disconnecting the storage devices from consumers, in addition, a switch is placed between the piezoelectric transducers and the storage devices for disconnecting the piezoelectric transducers from the batteries if it is necessary to replace or repair the components of the system,wherein the package of piezoelectric transducers is placed under the base of a lifting device performing the same type of work, and the system contains a controller for generating control signals for the start of charging and the start of discharging electrical energy storage devices, ensuring the switching of the charge and discharge of an individual storage device based on the results of comparing the current charge value of each storage device with the specified control values ​​of the charge level in such a way that at one control value, close to a full charge, charging is stopped and the storage device is connected to consumers, and at another control value, close to a full discharge, the storage device is disconnected from consumers and its charging is started, while the switching unit and the system as a whole do not use any other sources of electrical energy except for the charging current.

2. The system according to claim 1, characterized in that it contains at least two packages of piezoelectric transducers, which are installed under the base of the lifting device.

3. The system according to paragraph 2, characterized in that the packages include the same number of piezoelectric transducers.

4. The system according to paragraph 2, characterized in that the packages do not include the same number of piezoelectric transducers.

5. A system according to any of paragraphs 2-4, characterized in that the packages are placed under the base of the lifting device in one place.

6. A system according to any of paragraphs 2-4, characterized in that the packages are placed under the base of the lifting device in different places.

7. A system according to any one of paragraphs 1-6, characterized in that the drives are divided into groups, and each group includes at least one drive.

8. The system according to paragraph 7, characterized in that the groups of storage devices are connected to different consumers.

9. The system according to paragraph 7, characterized in that two groups of storage devices are used as sources of primary and backup power for one consumer. [0001] [0002]Explanation under Article 19(1) For the first time, a system for storing electrical energy from piezoelectric elements is proposed, when [0003] - the transformation conditions are repeated many times, since they are formed when performing the same type of work by other devices for a different purpose associated with the need to overcome mechanical loads, [0004] - and the beneficial effect occurs with each working cycle of any such device, which, taking into account the large number of occupied devices and an even more significant number of activated piezo generators, will make it possible to obtain an electric current of sufficient strength for a stable charge of the storage device. [0005]The nature of the working cycles of cranes that lift and move loads of varying mass at industrial production facilities will allow for the simultaneous activation of piezoelectric generators, the number of which is limited by the size of the functional part of the work being performed. [0006]This is how the problem with the conventional name “simultaneous clicks of hundreds of lighters” was solved. [0007]For the first time, it is possible to charge the battery without disconnecting the system from the load and without the help of other power sources (Fig. 4, Fig. 5), which is necessary for the implementation of the general principle of continuous use. [0008]The values ​​of the controlled battery parameters 7min and 7max (battery capacity, etc.) will be set taking into account many factors (including average daily and average annual air temperature), which will manifest themselves differently in different applications and will depend on the different loads of the cranes themselves during a single work cycle and the characteristics of the batteries. Therefore, it is currently impossible to specify a precise value for these parameters; however, it is necessary to note the inevitable influences that will arise. [0009]If tests (or initial launches) reveal a predominance of consumed power and, consequently, a lack of system capacity or a single group of storage batteries, then, given the unlimited choice of existing batteries, the most rational solution appears to be simply adding a battery with similar characteristics to the group or creating a group of batteries with higher capacity. It appears useful to create groups of batteries with higher and lower capacity for subsequent connection of storage batteries to different loads. Such solutions will not require radical changes to the network switching at the converter-storage sections (reducing or increasing the charging current). [0010]Piezoelectric generators are not controlled; their operation requires installation, connection to the established network, and replacement. Control is mandatory for switching battery charging and discharging. Depending on local conditions, other control options may be used, including a single centralized remote control. However, without a solution for charging a separate battery while others are discharging, ensuring uninterrupted operation of the system in DC power supply mode will present additional challenges. [0011]Considering such a sufficient and necessary interconnection, claim 1 of the new formula includes features without which the creation of a DC source from piezoelectric generators is fundamentally impossible, and features without which the use of a DC source with stable operation over an extended period of time is impossible. Furthermore, claim 1 of the new formula also implies the primary applied purpose of the invention: the system does not include any other current source other than piezoelectric generator stacks. [0012]This is how the problem called “uninterruptible power supply” is solved. [0013]The "uninterruptible" feature, together with the IPC class H02J, defines (sets) the maximum limits of the area for searching for analogs. Given the unknown impact of the combination of common features, the prior art does not provide a technical solution in the form of "obtaining a local DC storage device for uninterruptible operation without the use of other power sources." [0014]The provided additions and amendments to the formula of the invention in the national patenting procedure were taken into account as essential for making a decision on issuing a patent and publishing the invention - 2835536.

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