Energy storage and saving device and method for construction hoist, intelligent terminal and storage medium

Abstract

The invention relates to an energy storage and saving device and method for a construction hoist, an intelligent terminal and a storage medium, and relates to the field of construction equipment. The device comprises a supporting frame, a driving mechanism, a lifting box body, energy conversion equipment and energy storage equipment; the energy storage device comprises a bidirectional DC / DC controller and an energy storage medium. The driving mechanism is installed on the supporting frame and used for driving the lifting box body to ascend and descend, and the supporting frame is used for providing a lifting path of the lifting box body; the energy conversion equipment is used for converting potential energy of the lifting box body into electric energy in the descending process of the lifting box body; the bidirectional DC / DC controller is used for controlling the charging and discharging states of the energy storage medium; the energy storage medium in the charging state is used for storing electric energy generated by the energy conversion equipment in the charging state; the energy storage medium in the discharging state is used for providing electric energy for the driving mechanism in the lifting process of the lifting box body. The construction hoist has the effects of reducing the energy consumption of the construction hoist and saving the power consumption cost.

Description

Technical Field

[0001] The present application relates to the field of construction equipment, and in particular to an energy storage and energy-saving device, method, intelligent terminal and storage medium for a construction elevator. Background Art

[0002] Construction hoists play a huge role in more and more construction fields, especially in large projects, high-rise buildings and other scenes. The use of construction hoists is particularly important. It can greatly improve productivity and save labor time. People's comprehensive requirements for the performance, efficiency, load capacity, intelligence, labor cost, maintenance and other aspects of the hoist are also getting higher and higher.

[0003] In the related art, the construction elevator includes: a support frame, a driving mechanism and a lifting box. The lifting box is placed on the support frame, the driving mechanism is electrically connected to the power grid, and the driving mechanism drives the lifting box to move up and down on the support frame through electric energy.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the weight of objects transported by construction elevators can reach several tons, and the energy consumption is extremely high. Summary of the invention

[0005] In order to reduce the energy consumption of a construction elevator and save electricity costs, the present application provides an energy storage and energy-saving device, method, intelligent terminal and storage medium for a construction elevator.

[0006] In the first aspect, the present application provides an energy storage and energy-saving device for a construction elevator, which adopts the following technical solution: An energy storage and energy-saving device for a construction elevator, comprising: a support frame, a driving mechanism, a lifting box, an energy conversion device and an energy storage device; the energy storage device comprises a bidirectional DC / DC controller and an energy storage medium; The driving mechanism is installed on the support frame, the driving mechanism is used to drive the lifting box to move up and down, and the support frame is used to provide a lifting path for the lifting box; The energy conversion device is used to convert the potential energy of the lifting box into electrical energy during the descent of the lifting box; The bidirectional DC / DC controller is used to control the charge and discharge state of the energy storage medium; The energy storage medium in the charged state is used to store the electrical energy generated by the energy conversion device in the charged state; The energy storage medium in the discharged state is used to provide electrical energy to the driving mechanism during the ascending process of the lifting box.

[0007] By adopting the above technical solution, an energy conversion device and an energy storage device are installed on the construction elevator. When the lifting box is descending, the energy conversion device will convert the potential energy of the lifting box into electrical energy and store it in the energy storage device. When the lifting box is rising, the electrical energy in the energy storage device is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs.

[0008] In a second aspect, the present application provides an energy storage and energy saving method for a construction elevator, which adopts the following technical solution: An energy storage and energy saving method for a construction hoist, the method being performed by the energy storage and energy saving device of the construction hoist, comprising: In response to a descending instruction on the lifting box, starting the energy conversion device; storing the electrical energy generated by the energy conversion device in the energy storage device; In response to an ascending instruction on the lifting box, the energy storage device is used to supply power to the driving mechanism.

[0009] By adopting the above technical solution, an energy conversion device and an energy storage device are installed on the construction elevator. When the lifting box is descending, the energy conversion device will convert the potential energy of the lifting box into electrical energy and store it in the energy storage device. When the lifting box is rising, the electrical energy in the energy storage device is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs.

[0010] Optionally, the energy storage device includes a combination of several energy storage devices; During the descent of the lifting box, at least n target energy storage device combinations are determined according to the remaining power of the energy storage device combinations, where n is a positive integer greater than 1; Sorting the n target energy storage device combinations; Executing an energy storage step, the energy storage step comprising storing the electric energy generated by the energy conversion device in the i-th energy storage device combination, where i is a positive integer less than n+1, and an initial value of i is 1; Executing a switching step, the switching step comprising updating i to i+1 in response to each descent of the lifting box by a preset distance, and repeating the energy storage step until i is equal to n; When the lifting box keeps falling, i is initialized, and the energy storage step and the switching step are repeated.

[0011] By adopting the above technical solution, during the descent of the lifting box, multiple energy storage device combinations are used to store energy in sequence, preventing the temperature of a single energy storage device combination from being too high, affecting the energy storage effect of the energy storage device combination, and ensuring the safe use of the construction elevator.

[0012] Optionally, each energy storage device combination includes a master energy storage device and at least two slave energy storage devices; During the descent of the lifting box, the electric energy generated by the energy conversion device is stored in the main energy storage device; In response to the energy conversion device stopping storing electrical energy in the energy storage device combination, connecting the master energy storage device and the at least two slave energy storage devices, and controlling the master energy storage device to transfer electrical energy to the at least two slave energy storage devices; When the stored quantities of the master energy storage device and the at least two slave energy storage devices are balanced, the master energy storage device and the at least two slave energy storage devices are disconnected.

[0013] By adopting the above technical solution, the energy storage device combination is divided into a main energy storage device and a slave energy storage device. After the main energy storage device completes charging, the electric energy will be distributed to the slave energy storage device, which can prevent the temperature of the slave energy storage device from being too high during the charging process.

[0014] Optionally, during the descent of the lifting box, it is determined whether the first temperature of the current energy storage device combination is less than a temperature threshold; If so, storing the electrical energy generated by the energy conversion device in the current energy storage device combination; If not, obtaining the current temperature and remaining power of other energy storage device combinations in the energy storage device except the current energy storage device combination; Determine a substitute energy storage device combination from the other energy storage device combinations according to the current temperature and the remaining power of the other energy storage device combinations, wherein the current temperature corresponding to the substitute energy storage device combination is less than the temperature threshold and the remaining power corresponding to the substitute energy storage device combination is less than the first power threshold; The electrical energy generated by the energy conversion device is stored in the substitute energy storage device combination.

[0015] By adopting the above technical solution, when the temperature of the current energy storage device combination is too high, the energy storage object of the energy conversion device is changed in time to prevent the temperature of the current energy storage device combination from being too high.

[0016] Optionally, the lifting box includes a first lifting box and a second lifting box; When the first lifting box is in a descending state and the second lifting box is in an ascending state, obtaining the n target energy storage device combinations corresponding to the first lifting box; Determine a first energy storage device combination according to the position distribution of the n target energy storage device combinations in the energy storage device, wherein the first energy storage device combination is not adjacent to the n target energy storage device combinations and the temperature of the first energy storage device combination is less than a temperature threshold; The first energy storage device combination is used to supply power to the driving mechanism corresponding to the second lifting box.

[0017] By adopting the above technical solution, the target energy storage device combination for energy storage and the first energy storage device combination for energy release are staggered in space to prevent the working temperatures of the two from interfering with each other, thereby ensuring the working effects of both and preventing the temperature of the energy storage device from being too high.

[0018] Optionally, when the energy conversion device stores electric energy in a current energy storage device combination among the n target energy storage device combinations, a second energy storage device combination is determined among the n target energy storage device combinations according to the sorting of the n target energy storage device combinations, and a sorting sequence difference between the second energy storage device combination and the current energy storage device combination is greater than a preset difference value; Using the second energy storage device combination to provide electrical energy to the driving mechanism corresponding to the second lifting box; When the energy conversion device stores electric energy to the current energy storage device combination and the remaining power of the second energy storage device combination is less than a second power threshold, the energy storage device combination previous to the second energy storage device combination is used as the updated second energy storage device combination.

[0019] By adopting the above technical solution, a second energy storage device combination for releasing energy is determined in the target energy storage device combination, and the second energy storage device combination is adjusted according to changes in the current energy storage device combination, so that the temperature of the second energy storage device combination can be kept stable.

[0020] Optionally, when the lifting box is in an ascending state, obtaining a current height of the lifting box; Calculating the target amount of electricity required for the lifting box to reach the top of the support frame according to the current height and the total length of the support frame; A third energy storage device combination is determined from the plurality of energy storage device combinations according to the target power, and a difference between a remaining power of the third energy storage device combination and the target power is less than a preset power difference.

[0021] By adopting the above technical solution, a third energy storage device combination is determined in the energy storage device combination, and the third energy storage device combination is used to supply energy to the lifting box, so that its remaining power can be used to supply the lifting box to the top of the support frame.

[0022] In a third aspect, the present application provides a smart terminal, which adopts the following technical solution: An intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any one of the above methods.

[0023] By adopting the above technical solution, an energy conversion device and an energy storage device are installed on the construction elevator. When the lifting box is descending, the energy conversion device will convert the potential energy of the lifting box into electrical energy and store it in the energy storage device. When the lifting box is rising, the electrical energy in the energy storage device is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs.

[0024] In a fourth aspect, the present application provides a computer storage medium capable of storing corresponding programs, which is convenient for reducing the energy consumption of construction hoists and saving electricity costs, and adopts the following technical solutions: A computer-readable storage medium stores a computer program that can be loaded by a processor and execute any of the above-mentioned energy storage and energy-saving methods for a construction elevator.

[0025] By adopting the above technical solution, an energy conversion device and an energy storage device are installed on the construction elevator. When the lifting box is descending, the energy conversion device will convert the potential energy of the lifting box into electrical energy and store it in the energy storage device. When the lifting box is rising, the electrical energy in the energy storage device is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Install energy conversion equipment and energy storage equipment on the construction elevator. When the lifting box is descending, the energy conversion equipment will convert the potential energy of the lifting box into electrical energy and store it in the energy storage equipment. When the lifting box is rising, the electrical energy in the energy storage equipment is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs; 2. During the descent of the lifting box, use multiple energy storage device combinations to store energy in sequence to prevent the temperature of a single energy storage device combination from being too high, affecting the energy storage effect of the energy storage device combination, and ensuring the safety of the construction lift; 3. The energy storage device combination is divided into a main energy storage device and a slave energy storage device. After the main energy storage device completes charging, the electric energy will be distributed to the slave energy storage device, which can prevent the temperature of the slave energy storage device from being too high during the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an energy storage and energy-saving device for a construction elevator provided in an embodiment of the present application.

[0028] Figure 2 It is a flow chart of an energy storage and energy-saving method for a construction elevator provided in an embodiment of the present application.

[0029] Figure 3It is a flow chart of a switching method of an energy storage device combination provided in an embodiment of the present application.

[0030] Figure 4 It is a time-bus voltage curve diagram provided in an embodiment of the present application.

[0031] Figure 5 It is a flowchart of an operating method of a master-slave energy storage device provided in an embodiment of the present application.

[0032] Figure 6 This is a schematic diagram of a method for overheating protection of an energy storage device provided in an embodiment of the present application. Figure 1 .

[0033] Figure 7 This is a schematic diagram of a method for overheating protection of an energy storage device provided in an embodiment of the present application. Figure 2 .

[0034] Figure 8 This is a schematic diagram of a method for supplying energy to an energy storage device provided in an embodiment of the present application. Figure 1 .

[0035] Fig. 9 This is a schematic diagram of a method for supplying energy to an energy storage device provided in an embodiment of the present application. Figure 2 . DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1 To Attachment Fig. 9 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] The present application embodiment discloses an energy storage and energy saving device for a construction elevator. Figure 1 The energy storage and energy-saving device of the construction hoist includes a support frame 1, a driving mechanism 2, a lifting box 3, an energy conversion device 4 and an energy storage device 5; the energy storage device 5 includes a bidirectional DC / DC controller and an energy storage medium; The driving mechanism 2 is installed on the support frame 1 . The driving mechanism 2 is used to drive the lifting box 3 to move up and down. The support frame 1 is used to provide a lifting path for the lifting box 3 .

[0038] The energy conversion device 4 is used to convert the potential energy of the lifting box 3 into electrical energy during the process of the lifting box 3 descending.

[0039] The bidirectional DC / DC controller is used to control the charging and discharging state of the energy storage medium.

[0040] The energy storage medium in the charged state is used to store the electric energy generated by the energy conversion device 4 in the charged state.

[0041] The energy storage medium in the discharged state is used to provide electric energy to the driving mechanism 2 during the ascending process of the lifting box 3 .

[0042] In an optional embodiment of the present application, the energy storage medium is a battery, a supercapacitor, etc.

[0043] Exemplarily, the lifting boxes 3 include two, and the two lifting boxes 3 are symmetrically distributed on both sides of the support frame 1. The driving mechanism 2 is installed at the top of the support frame 1.

[0044] Specifically, the lifting box 3 can also be a car or a cage. The support frame 1 is a rack guide rail.

[0045] For example, the lifting box descends from 100 meters. The lifting box itself weighs 2000 kg, carries 2000 kg, half load is 1000 kg, and normally carries 3000 kg. During the descent, 0.8 kWh of electricity can be generated, which can supplement the power of the lifting box when it is ascending.

[0046] In summary, energy conversion equipment and energy storage equipment are installed on the construction elevator. When the lifting box is descending, the energy conversion equipment will convert the potential energy of the lifting box into electrical energy and store it in the energy storage equipment. When the lifting box is rising, the electrical energy in the energy storage equipment is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs.

[0047] The present application embodiment discloses a flow chart of an energy storage and energy saving method for a construction elevator. Figure 2 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S201: In response to a descending instruction on the lifting box, the energy conversion device is started.

[0048] The descending instruction is used to instruct the lifting box to descend along the support frame. Exemplarily, a lifting switch is installed on the lifting box, and the lifting switch is used to control the lifting box to rise or fall. In response to the lifting switch receiving a trigger operation by a staff member, a lifting instruction is generated.

[0049] Step S202: storing the electric energy generated by the energy conversion device in the energy storage device.

[0050] The energy storage device includes a bidirectional DC / DC controller and an energy storage medium. One side of the bidirectional DC / DC controller is connected to the energy conversion device, and the other side is connected to the energy storage medium. The bidirectional DC / DC controller is used to control the charge and discharge state of the energy storage medium. The bidirectional DC / DC controller determines the charge and discharge state by the rise or fall of the lifting box. Exemplarily, when the lifting box rises, the bidirectional DC / DC controller controls the discharge of the energy storage medium so that the energy storage medium provides electrical energy to the driving mechanism; when the lifting box descends, the bidirectional DC / DC controller controls the charging of the energy storage medium, and the energy conversion device stores the generated electrical energy in the energy storage medium.

[0051] Step S203: In response to the ascending instruction on the lifting box, the energy storage device is used to supply power to the driving mechanism.

[0052] The ascending instruction is used to instruct the lifting box to ascend along the support frame. Exemplarily, the ascending instruction is generated in response to the lifting switch receiving a departure operation of a staff member.

[0053] In summary, energy conversion equipment and energy storage equipment are installed on the construction elevator. When the lifting box is descending, the energy conversion equipment will convert the potential energy of the lifting box into electrical energy and store it in the energy storage equipment. When the lifting box is rising, the electrical energy in the energy storage equipment is used to power the driving mechanism. This device can reduce the power consumption of the construction elevator during use and save costs.

[0054] In the following embodiments, during the charging process of the energy storage medium in the energy storage device, heat accumulation is very likely to occur, causing the energy storage device to overheat and affecting the normal operation of the entire construction elevator. To this end, the present application embodiment discloses a flow chart of a switching method for an energy storage device combination. Figure 3 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S301: During the descent of the lifting box, at least n target energy storage device combinations are determined according to the remaining power of the energy storage device combinations, where n is a positive integer greater than 1.

[0055] In this embodiment, the energy storage device includes a combination of several energy storage devices, wherein several means at least two.

[0056] Exemplarily, the remaining power of each energy storage device combination is compared with a preset minimum power value, and the energy storage device combination with a remaining power less than the aforementioned minimum power value is used as the target energy storage device combination.

[0057] For example, please refer to Figure 4During the charging process of the energy storage medium, the bus voltage of the energy storage medium will rise from 600V to at least 690V, causing the bus current to rise, which in turn causes the temperature of the energy storage medium to rise rapidly. Figure 4 In the figure, U1 represents the contact voltage of the relay, U2 represents the bus voltage when discharging stops, U3 represents the bus voltage when discharging starts, U4 represents the bus voltage when discharging stops, U5 represents the bus voltage when discharging starts, U6 represents the starting voltage of the energy-consuming braking of the lifting box, and U7 represents the overvoltage protection voltage.

[0058] Step S302: sorting n target energy storage device combinations.

[0059] Exemplarily, the remaining power of n target energy storage device combinations is sorted from small to large.

[0060] Exemplarily, according to the location distribution of n target energy storage device combinations, clustering operations are performed on the n target energy storage device combinations to obtain clustering results, which include several clustering combinations. The target energy storage device combinations in each clustering combination are sorted from large to small according to the number of the target energy storage device combinations in the clustering combination.

[0061] Step S303: executing an energy storage step, which includes storing the electric energy generated by the energy conversion device into the i-th energy storage device combination, where i is a positive integer less than n+1, and the initial value of i is 1.

[0062] Exemplarily, the bidirectional DC / DC controller controls the energy conversion device to charge the energy storage medium in the i-th energy storage device combination, which is equivalent to the energy conversion device applying voltage across the energy storage medium to charge the energy storage medium and achieve electrical energy storage.

[0063] Step S304: Execute a switching step, which includes updating i to i+1 in response to each descent of the lifting box by a preset distance, and repeating the energy storage step until i is equal to n.

[0064] The preset distance is related to the height of the support frame. Exemplarily, the preset distance is obtained according to the product of the height of the support frame and the preset proportional factor. For example, assuming that the proportional factor is 10%, when the height of the support frame is 100 meters, the preset distance is 10 meters.

[0065] For example, the energy conversion device originally generates electric energy and stores it in the first energy storage device combination. When the lifting box drops 10 meters, the energy conversion device will store the generated electric energy in the second energy storage device combination. When the lifting box drops 10 meters again, the energy conversion device will store the generated electric energy in the third energy storage device combination. By switching the energy storage device combination used to store electric energy, it can be ensured that the temperature of each energy storage device combination will not be too high.

[0066] In some other implementations, before updating i to i+1, determine whether the remaining power of the i+1th energy storage device combination is less than the preset maximum power. If so, i is updated to i+1; if not, i is updated to i+2, and determine whether the remaining power of the i+2th energy storage device combination is less than the preset maximum power.

[0067] Step S305: while the lifting box keeps falling, initialize i and repeat the energy storage step and the switching step.

[0068] When i is equal to n and the lifting box keeps falling, the falling of the lifting box can still generate electricity, so the above energy storage steps and switching steps are repeated to restart the cycle from the first energy storage device combination.

[0069] In summary, during the descent of the lifting box, multiple energy storage device combinations are used to store energy in sequence to prevent the temperature of a single energy storage device combination from being too high, affecting the energy storage effect of the energy storage device combination, and ensuring the safe use of the construction elevator.

[0070] In the following embodiments, the bus voltage and bus current generated by the energy conversion device during the falling process of the lifting box are both relatively large, which places high requirements on the quality of the energy storage medium and usually requires relatively high costs and production costs to achieve. In order to reduce costs and production costs, the embodiment of the present application discloses a flow chart of the operation method of the master-slave energy storage device. Figure 5 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S501: During the descent of the lifting box, the electric energy generated by the energy conversion device is stored in the main energy storage device.

[0071] Each energy storage device combination includes a master energy storage device and at least two slave energy storage devices. Optionally, both the master energy storage device and the slave energy storage device are energy storage media, and the parameters of the master energy storage device are superior to the parameters of the slave energy storage device. For example, taking the rated voltage as an example, the rated voltage of the master energy storage device is greater than the rated voltage of the slave energy storage device. For another example, taking the temperature coefficient as an example, the temperature coefficient of the master energy storage device is less than the temperature coefficient of the slave energy storage device.

[0072] The master energy storage device is connected in parallel with the slave energy storage device.

[0073] Step S502: in response to the energy conversion device stopping storing electric energy in the energy storage device combination, connecting the master energy storage device and at least two slave energy storage devices, and controlling the master energy storage device to transfer electric energy to at least two slave energy storage devices.

[0074] After connecting the master energy storage device and at least two slave energy storage devices, since the master energy storage device is connected in parallel with the slave energy storage device, the power on the master energy storage device will be transferred to the slave energy storage device, so that the master energy storage device can charge the slave energy storage device. The charging current of the master energy storage device to the slave energy storage device is smaller than the charging current of the energy conversion device. Therefore, the quality requirements for the slave energy storage device can be appropriately lowered to achieve cost savings.

[0075] Step S503: when the stored electricity of the master energy storage device and the at least two slave energy storage devices is balanced, disconnect the master energy storage device and the at least two slave energy storage devices.

[0076] In some other embodiments, when the connection time between the master energy storage device and the at least two slave energy storage devices reaches a preset time, the master energy storage device and the at least two slave energy storage devices are disconnected.

[0077] In some embodiments, before the energy conversion device stores the electric energy in the main energy storage device, and when the stored electric quantity of the main energy storage device and at least two slave energy storage devices is not balanced, the main energy storage device and at least two slave energy storage devices need to be disconnected, and then the energy conversion device is controlled to store the electric energy in the main energy storage device to prevent damage to the slave energy storage devices.

[0078] In summary, the energy storage device combination is divided into a main energy storage device and a slave energy storage device. After the main energy storage device completes charging, the electric energy will be distributed to the slave energy storage device, which can prevent the temperature of the slave energy storage device from being too high during the charging process.

[0079] In the following embodiments, when the energy storage device combination overheats, it is necessary to promptly change the charging object of the energy conversion device to ensure that the energy storage device does not cause a safety accident due to overheating. Figure 1 . Reference Figure 6 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S601: During the descent of the lifting box, it is determined whether the first temperature of the current energy storage device combination is less than a temperature threshold.

[0080] If the first temperature of the current energy storage device combination is less than the temperature threshold, executing step S602; If the first temperature of the current energy storage device combination is not less than the temperature threshold, step S603 to step S603 to step S605 are executed.

[0081] Optionally, the temperature threshold is a preset empirical value, for example, the temperature threshold is 60°C.

[0082] Optionally, the temperature threshold is negatively correlated with the ambient temperature, and the higher the ambient temperature, the lower the temperature threshold.

[0083] Step S602: If yes, the electric energy generated by the energy conversion device is stored in the current energy storage device combination.

[0084] When the first temperature of the current energy storage device combination is less than the temperature threshold, it indicates that the current energy storage device combination is operating normally and is not overheated.

[0085] Step S603: If not, the current temperature and remaining power of other energy storage device combinations in the energy storage device except the current energy storage device combination are obtained.

[0086] When the first temperature of the current energy storage device combination is not less than the temperature threshold, it indicates that the temperature of the current energy storage device combination is too high and there is a possibility of overheating, and the charging object of the energy conversion device needs to be changed.

[0087] In some embodiments, a temperature sensor is installed on the energy storage and energy-saving device of the construction elevator, and the temperature sensor can be used to monitor the temperature of each energy storage device combination.

[0088] In some embodiments, each energy storage device combination is also equipped with a power meter, which can be used to monitor the remaining power of each energy storage device combination.

[0089] Step S604: determining a substitute energy storage device combination from other energy storage device combinations according to the current temperature and remaining power of other energy storage device combinations, wherein the current temperature corresponding to the substitute energy storage device combination is less than the temperature threshold and the remaining power corresponding to the substitute energy storage device combination is less than the first power threshold.

[0090] The first power threshold is a preset empirical value. The embodiment of the present application does not specifically limit the value of the first power threshold.

[0091] In this step, the substitute energy storage device combination needs to take on the task of storing the electrical energy generated by the energy conversion device. Therefore, the remaining power of the substitute energy storage device combination needs to be low, and the temperature of the substitute energy storage device combination is also low to ensure that the subsequent storage of electrical energy will not cause overheating problems.

[0092] In some other embodiments, the height of the lifting box from the ground is obtained. The predicted power generation of the energy conversion device is calculated according to the height from the ground. According to the predicted power generation, the current temperature of other energy storage device combinations and the remaining power, a substitute energy storage device combination is determined from other energy storage device combinations, the current temperature corresponding to the substitute energy storage device combination is less than the temperature threshold, and the remaining power corresponding to the substitute energy storage device combination is greater than the predicted power generation, and the difference between the remaining power and the predicted power generation is less than a preset power.

[0093] Step S605: storing the electric energy generated by the energy conversion device into the substitute energy storage device combination.

[0094] Exemplarily, the bidirectional DC / DC controller controls the energy conversion device to charge the energy storage medium in the substitute energy storage device combination, which is equivalent to the energy conversion device applying voltage across the energy storage medium to realize charging of the energy storage medium and achieve electrical energy storage.

[0095] In summary, when the temperature of the current energy storage device combination is too high, the energy storage object of the energy conversion device is changed in time to prevent the temperature of the current energy storage device combination from being too high.

[0096] In the following embodiment, when the lifting box includes a first lifting box and a second lifting box, and the first lifting box is in a descending state and the second lifting box is in an ascending state, according to the above description, the energy storage device combination in the charging state will generate heat, causing the surrounding temperature to rise, and the temperature rise will affect the discharge of the energy storage device combination. Therefore, in order to ensure that the energy storage device combination in the discharging state and the energy storage device combination in the charging state do not interfere with each other, the embodiment of the present application discloses a process diagram of an overheat protection method for energy storage devices. Figure 2 . Reference Figure 7 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S701: When the first lifting box is in a descending state and the second lifting box is in an ascending state, obtain n target energy storage device combinations corresponding to the first lifting box.

[0097] The lifting box includes a first lifting box and a second lifting box. Optionally, the first lifting box and the second lifting box are symmetrically distributed on the support frame.

[0098] For steps to determine the n target energy storage device combinations, please refer to Figure 3 The embodiments shown will not be described in detail here.

[0099] Step S702: determining a first energy storage device combination according to the position distribution of the n target energy storage device combinations in the energy storage device, the first energy storage device combination being not adjacent to the n target energy storage device combinations and the temperature of the first energy storage device combination being less than a temperature threshold.

[0100] Exemplarily, according to the position distribution of the n target energy storage device combinations in the energy storage device, a first temporary energy storage device combination that is not adjacent to the n target energy storage device combinations is determined. According to the temperature of the first temporary energy storage device combination and the temperature threshold, the first energy storage device combination is determined.

[0101] Exemplarily, based on the temperature and temperature threshold of the n target energy storage device combinations, a second temporary energy storage device combination whose temperature is less than the temperature threshold is determined. Based on the position distribution of the n target energy storage device combinations within the energy storage device, a first energy storage device combination that is not adjacent to the n target energy storage device combinations is determined in the second temporary energy storage device combination.

[0102] Step S703: Use the first energy storage device combination to supply power to the driving mechanism corresponding to the second lifting box.

[0103] Exemplarily, the bidirectional DC / DC controller controls the first energy storage device combination to discharge to the drive mechanism corresponding to the second lifting box, which is equivalent to the first energy storage device combination applying voltage to both ends of the drive mechanism to realize power supply to the drive mechanism.

[0104] In summary, the target energy storage device combination for energy storage and the first energy storage device combination for energy release are spatially staggered to prevent their working temperatures from interfering with each other, thereby ensuring their working effects and preventing the temperature of the energy storage device from being too high.

[0105] In the following embodiments, in the process of determining the first energy storage device combination, there may be a situation where there is no suitable first energy storage device combination in other energy storage device combinations. In this case, it is necessary to use other methods to redetermine the energy storage device combination. Therefore, the embodiment of the present application discloses a flow diagram of a method for supplying energy to an energy storage device. Figure 1 . Reference Figure 8 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S801: when the energy conversion device stores electric energy to the current energy storage device combination among n target energy storage device combinations, a second energy storage device combination is determined among the n target energy storage device combinations according to the sorting of the n target energy storage device combinations, and the sorting sequence difference between the second energy storage device combination and the current energy storage device combination is greater than a preset difference.

[0106] The preset difference is a preset experience value.

[0107] For example, if the current energy storage device combination is the seventh of the n target energy storage device combinations, the third energy storage device combination of the n target energy storage device combinations is taken as the second energy storage device combination. In some other embodiments, when the power of the second energy storage device combination is less than a preset minimum charging power, the energy storage device combination immediately preceding the second energy storage device combination is used as the updated second energy storage device combination.

[0108] Step S802: Use the second energy storage device combination to provide electrical energy to the driving mechanism corresponding to the second lifting box.

[0109] Exemplarily, the bidirectional DC / DC controller controls the second energy storage device combination to discharge to the drive mechanism corresponding to the second lifting box, which is equivalent to the second energy storage device combination applying voltage to both ends of the drive mechanism to realize power supply to the drive mechanism.

[0110] Step S803: when the energy conversion device stores electric energy in the current energy storage device combination and the remaining power of the second energy storage device combination is less than the second power threshold, the energy storage device combination before the second energy storage device combination is used as the updated second energy storage device combination.

[0111] When the energy conversion device stores electrical energy in the current energy storage device combination and the remaining power of the second energy storage device combination is less than the second power threshold, it means that the remaining power of the second energy storage device combination is insufficient for the drive mechanism to use, so the second energy storage device combination needs to be updated so that the updated second energy storage device combination can provide electrical energy to the drive structure.

[0112] In summary, the second energy storage device combination for releasing energy is determined in the target energy storage device combination, and the second energy storage device combination is adjusted according to the change of the current energy storage device combination, so that the temperature of the second energy storage device combination can be kept stable.

[0113] In the following embodiments, during the process of the lifting and lowering box rising, a suitable energy storage device combination can be selected to power the drive mechanism, so as to minimize the switching of the energy storage device combination. Figure 2 . Reference Fig. 9 , this method can be obtained by Figure 1 The energy storage and energy saving device of the construction hoist shown is implemented, and the method includes: Step S901: when the lifting box is in the ascending state, obtaining the current height of the lifting box.

[0114] The current height refers to the distance between the lift box and the ground.

[0115] In some embodiments, a distance sensor is installed on the construction elevator, and the distance sensor is used to obtain the distance from the bottom of the lifting box to the ground, and then obtain the current height of the lifting box.

[0116] Step S902: Calculate the target power required for the lifting box to reach the top of the support frame according to the current height and the total length of the support frame.

[0117] Exemplarily, the remaining distance between the lifting box and the top of the support frame is calculated based on the difference between the total length of the support frame and the current height. According to the remaining distance, the target power required for the lifting box to reach the top of the support frame is predicted. The target power is linearly related to the remaining distance.

[0118] Step S903: determining a third energy storage device combination from among the plurality of energy storage device combinations according to the target power, wherein the difference between the remaining power of the third energy storage device combination and the target power is less than a preset power difference.

[0119] Further, it is detected whether the temperature of the third energy storage device combination is less than the temperature threshold, and if so, the third energy storage device combination is used to supply energy to the driving mechanism.

[0120] In summary, the third energy storage device combination is determined in the energy storage device combination, and the third energy storage device combination is used to supply energy to the lifting box, so that the remaining power can be used to supply the lifting box to rise to the top of the support frame.

[0121] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0122] An embodiment of the present application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed for an energy storage and energy-saving method for a construction elevator.

[0123] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0124] Based on the same inventive concept, an embodiment of the present application provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes an energy storage and energy-saving method for a construction elevator.

[0125] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0126] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. An energy storage and energy-saving device for a construction hoist, characterized in that: The device comprises: a support frame, a driving mechanism, a lifting box, an energy conversion device and an energy storage device; the energy storage device comprises a bidirectional DC / DC controller and an energy storage medium; The driving mechanism is installed on the support frame, the driving mechanism is used to drive the lifting box to move up and down, and the support frame is used to provide a lifting path for the lifting box; The energy conversion device is used to convert the potential energy of the lifting box into electrical energy during the descent of the lifting box; The bidirectional DC / DC controller is used to control the charge and discharge state of the energy storage medium; The energy storage medium in the charged state is used to store the electrical energy generated by the energy conversion device in the charged state; The energy storage medium in the discharged state is used to provide electrical energy to the driving mechanism during the ascending process of the lifting box.

2. An energy storage and energy saving method for a construction hoist, characterized in that: The method is performed by the energy storage and energy-saving device for the construction elevator according to claim 1, and the method comprises: In response to a descending instruction on the lifting box, starting the energy conversion device; storing the electrical energy generated by the energy conversion device in the energy storage device; In response to an ascending instruction on the lifting box, the energy storage device is used to supply power to the driving mechanism.

3. The energy storage and energy saving method for a construction hoist according to claim 2, characterized in that: The energy storage device includes a combination of several energy storage devices; The method further comprises: During the descent of the lifting box, at least n target energy storage device combinations are determined according to the remaining power of the energy storage device combinations, where n is a positive integer greater than 1; Sorting the n target energy storage device combinations; Executing an energy storage step, the energy storage step comprising storing the electric energy generated by the energy conversion device in the i-th energy storage device combination, where i is a positive integer less than n+1, and an initial value of i is 1; Executing a switching step, the switching step comprising updating i to i+1 in response to each descent of the lifting box by a preset distance, and repeating the energy storage step until i is equal to n; When the lifting box keeps falling, i is initialized, and the energy storage step and the switching step are repeated.

4. The energy storage and energy saving method for a construction hoist according to claim 3 is characterized in that: Each energy storage device combination includes a master energy storage device and at least two slave energy storage devices; The method further comprises: During the descent of the lifting box, the electric energy generated by the energy conversion device is stored in the main energy storage device; In response to the energy conversion device stopping storing electrical energy in the energy storage device combination, connecting the master energy storage device and the at least two slave energy storage devices, and controlling the master energy storage device to transfer electrical energy to the at least two slave energy storage devices; When the stored quantities of the master energy storage device and the at least two slave energy storage devices are balanced, the master energy storage device and the at least two slave energy storage devices are disconnected.

5. The energy storage and energy saving method for a construction hoist according to claim 3, characterized in that: The method further comprises: During the descent of the lifting box, determining whether the first temperature of the current energy storage device combination is less than a temperature threshold; If so, storing the electrical energy generated by the energy conversion device in the current energy storage device combination; If not, obtaining the current temperature and remaining power of other energy storage device combinations in the energy storage device except the current energy storage device combination; Determine a substitute energy storage device combination from the other energy storage device combinations according to the current temperature and the remaining power of the other energy storage device combinations, wherein the current temperature corresponding to the substitute energy storage device combination is less than the temperature threshold and the remaining power corresponding to the substitute energy storage device combination is less than the first power threshold; The electrical energy generated by the energy conversion device is stored in the substitute energy storage device combination.

6. The energy storage and energy saving method for a construction hoist according to claim 3, characterized in that: The lifting box includes a first lifting box and a second lifting box; The method further comprises: When the first lifting box is in a descending state and the second lifting box is in an ascending state, obtaining the n target energy storage device combinations corresponding to the first lifting box; Determine a first energy storage device combination according to the position distribution of the n target energy storage device combinations in the energy storage device, wherein the first energy storage device combination is not adjacent to the n target energy storage device combinations and the temperature of the first energy storage device combination is less than a temperature threshold; The first energy storage device combination is used to supply power to the driving mechanism corresponding to the second lifting box.

7. The energy storage and energy saving method for a construction hoist according to claim 6, characterized in that: The method further comprises: In the case where the energy conversion device stores electric energy in a current energy storage device combination among the n target energy storage device combinations, a second energy storage device combination is determined among the n target energy storage device combinations according to the sorting of the n target energy storage device combinations, and a sorting sequence difference between the second energy storage device combination and the current energy storage device combination is greater than a preset difference value; Using the second energy storage device combination to provide electrical energy to the driving mechanism corresponding to the second lifting box; When the energy conversion device stores electric energy to the current energy storage device combination and the remaining power of the second energy storage device combination is less than a second power threshold, the energy storage device combination previous to the second energy storage device combination is used as the updated second energy storage device combination.

8. The energy storage and energy saving method for a construction hoist according to claim 3, characterized in that: The method further comprises: When the lifting box is in an ascending state, obtaining a current height of the lifting box; Calculating the target amount of electricity required for the lifting box to reach the top of the support frame according to the current height and the total length of the support frame; A third energy storage device combination is determined from the plurality of energy storage device combinations according to the target power, and a difference between a remaining power of the third energy storage device combination and the target power is less than a preset power difference.

9. An intelligent terminal, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes any one of the methods of claims 2 to 8.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the method according to any one of claims 2 to 8.

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