Portable emergency power supply system and method for opening and closing water gate

Abstract

The invention relates to the technical field of emergency power supply, in particular to a portable emergency power supply system for opening and closing a water gate, which comprises a solid-state battery pack, an electric controller pack, a battery connection wire and a three-phase motor connection wire, and is characterized in that the solid-state battery pack, the electric controller pack, the battery connection wire and the three-phase motor connection wire can be detached into independent modules; the solid-state battery pack is used for outputting direct-current high-voltage electricity; the battery connection wire is used for establishing a circuit between the solid-state battery pack and the electric controller pack; the electric controller is used for converting the direct-current high-voltage electricity into three-phase sine wave alternating current which can be used by a three-phase motor of the water gate hoist to be electrified; and the three-phase motor connection wire is used for establishing a circuit between the electric controller package and the three-phase motor of the water gate hoist to be electrified. Under the scene of water gate power shortage caused by extremely severe weather, the transportation difficulty of the generator set can be reduced through the modularized battery pack in cooperation with a direct current-to-alternating current mode.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency power supply, and particularly to a portable emergency power supply system and method for opening and closing a sluice gate. Background Art

[0002] Sluice gates play a crucial role in water conservancy projects and are widely used in many aspects such as flood discharge, waterlogging drainage, sediment flushing, flood interception, tide prevention, water storage, navigation, and water flow regulation. At present, a large number of sluice gates have been built in China. According to the statistical data in 2021, there are 100,321 sluice gates with a flow rate of 5 m 3 / s or more in China, including 923 large sluice gates and 6,697 medium-sized sluice gates. Classified by type, there are 8,193 flood-diversion gates, 17,808 drainage (return) gates, 4,955 tide gates, 13,796 diversion gates, and 55,569 regulating gates. From a broader perspective, as of the end of 2018, the length of river embankments above grade 5 built in China was 312,000 kilometers, and there were 104,000 sluice gates with a flow rate of more than 5 cubic meters per second.

[0003] However, among many sluice gates, a considerable number of small and medium-sized sluice gates (after investigating small and medium-sized sluice gates in some areas) are only equipped with single-circuit power supply. In the face of extreme environments such as typhoons, thunderstorms, and earthquakes, the power supply network is extremely prone to failure, resulting in the inability to open and close the gates in time, seriously affecting flood control and waterlogging drainage work, and even causing significant property losses. Some areas are equipped with mobile diesel generator sets, but in complex terrains or when roads are blocked due to typhoon rainstorms, their bulky characteristics make it difficult for the generator sets to play a role in time. Summary of the Invention

[0004] The present invention provides a portable emergency power supply system for opening and closing a sluice gate. Its main purpose is to reduce the transportation difficulty of the generator set through a modular battery pack and in combination with the method of converting direct current to alternating current in the scenario where the sluice gate lacks power due to extremely bad weather.

[0005] To achieve the above object, a portable emergency power supply system for opening and closing a sluice gate provided by the present invention includes a solid-state battery pack, an electronic control unit pack, a battery connection wire, and a three-phase motor connection wire. It is characterized in that the solid-state battery pack, the electronic control unit pack, the battery connection wire, and the three-phase motor connection wire can be disassembled into independent modules from each other;

[0006] The solid-state battery pack is used to output high-voltage direct current;

[0007] The battery connection wire is used to establish a circuit between the solid-state battery pack and the electronic control unit pack;

[0008] The electronic control unit pack is used to convert the high-voltage direct current into three-phase sinusoidal alternating current available for the three-phase motor of the sluice gate hoist to be powered on;

[0009] The three-phase motor connection wire is used to establish a circuit between the electric control unit package and the three-phase motor of the sluice hoist to be electrified.

[0010] Optionally, the electric control unit package includes: an inverter module, a pre-charge resistor module, a pre-charge capacitor module, a feedback resistor module, and a relay module;

[0011] The inverter module is used to convert the DC high voltage into three-phase sinusoidal alternating current available for the three-phase motor of the sluice hoist;

[0012] The pre-charge resistor module is used to connect a resistor with a preset value instantaneously when the inverter module starts, and use the resistor to limit the excessive current generated instantaneously when the inverter module is enabled;

[0013] The pre-charge capacitor module is used to release the pre-stored electric energy when the three-phase motor of the sluice hoist generates a large current demand at the moment when the three-phase motor of the sluice hoist starts, and use the pre-stored electric energy to relieve the large current demand;

[0014] The feedback resistor module is used to connect the feedback resistor module when the three-phase motor of the sluice hoist controls the gate to close and the three-phase motor of the sluice hoist generates an overcurrent, and use the feedback resistor module to consume the overcurrent;

[0015] The relay module is used to deliver the three-phase sinusoidal alternating current to the three-phase motor of the sluice hoist according to a preset time delay, and is also used to self-check the circuit structure of the portable emergency power supply system for sluice opening and closing.

[0016] Optionally, the pre-charge resistor module includes:

[0017] The resistor with the preset value can be dynamically configured according to a pre-constructed intelligent control circuit and the excessive current.

[0018] Optionally, the pre-charge capacitor module includes:

[0019] According to a pre-constructed power management service, control the charging and discharging processes of the capacitor of the pre-charge capacitor module to ensure that the pre-charge capacitor module can be in a fully charged state after the start-up process of the three-phase motor of the sluice hoist ends.

[0020] Optionally, the exterior of the electric control unit package includes: a start button;

[0021] The start button is used to control the start of the relay module.

[0022] Optionally, the electric control unit package includes: a power supply interface and a motor interface;

[0023] The power supply interface is used for connecting one end of the battery connection wire;

[0024] The motor interface is used for connecting one end of the three-phase motor connection wire;

[0025] When the motor interface is a three-phase interface, if any two of the three-phase connectors of the three-phase motor connection wire are swapped, the working direction of the three-phase motor of the sluice hoist will reverse.

[0026] Optionally, the shells of the solid-state battery package and the electric control unit package are made of materials with heat dissipation and safety properties. The overall weight of the portable emergency power supply system for sluice opening and closing does not exceed 25 kg, which is suitable for the comfortable load range that can be carried by a single adult according to the pre-established ISO11228-1 standard.

[0027] Specifically, the present invention provides a portable sluice emergency power supply module, which consists of two modules: a solid-state battery package and an electric control unit package, with a weight of about 25 KG. It can be carried by a single adult to the hoist room to meet the emergency power demand of small and medium-sized sluices. Among them, the weight of the solid-state battery package is about 20 kg, and the electric control unit is about 5 kg.

[0028] For example, considering that the motor power of small and medium-sized sluices is 10 - 50 KW, and considering the shared scenario of small and medium-sized sluices, the present invention takes a 50 kW motor as an example. The opening and closing time of the sluice is 5 minutes (about 0.083 hours), so the single operation is 50 kW × 0.083 h = 4.15 KWh. Considering that today's sulfide all-solid-state batteries use high-nickel ternary cathodes + high-silicon / lithium metal anodes, and the energy density has exceeded 400 Wh / kg. The present invention presets the energy density of the solid-state battery package to be 400 Wh / kg, so for a single execution, the weight of the solid-state battery package is at least 4.15 Wh ÷ 400 Wh / kg ≈ 10.3 kg. For a complete opening and closing process, the weight is at least 10.3 kg × 2 = 20.6 kg. In addition, considering the actual situation with smaller motor power requirements (such as 15 kW) and higher solid-state battery energy density implementation conditions, the weight of the battery package can be further reduced, and the battery package can be reinforced with an insulating plastic waterproof shell, which can reduce the packaging weight of the solid-state battery package.

[0029] Furthermore, the electric control unit package includes an inverter module, a pre-charge resistor module, a pre-charge capacitor module, a feedback resistor module, and a relay module. These modules are all common modules, and the total mass can be limited to about 5 kg. As a result, the overall weight of the portable emergency power supply system for opening and closing the sluice is about 25 kg, which is within the comfortable load range for a single adult to carry by hand according to ISO 11228-1 standard, thus facilitating rescue scenarios.

[0030] In addition, some of the batteries in the battery pack can be allocated to the controller pack, so that the gravity between the solid-state battery pack and the controller pack is relatively balanced, improving the transportability.

[0031] Optionally, both the solid-state battery pack and the electric control unit package have multiple specifications, and the system can be configured according to the number and model of the three-phase motors of the sluice hoist.

[0032] To achieve the above object, the present invention also provides a portable emergency power supply method for opening and closing a sluice, characterized in that the method includes:

[0033] Obtaining a modular solid-state battery pack and an electric control unit package;

[0034] Using the solid-state battery pack to generate high-voltage direct current and sending the high-voltage direct current to the electric control unit package;

[0035] Using the electric control unit package to perform voltage inversion regulation on the received high-voltage direct current to obtain three-phase sinusoidal alternating current, and using the three-phase sinusoidal alternating current to start and operate the three-phase motor of the sluice hoist to be powered on.

[0036] Optionally, the step of using the electric control unit package to perform voltage inversion regulation on the received high-voltage direct current to obtain three-phase sinusoidal alternating current, and using the three-phase sinusoidal alternating current to start and operate the three-phase motor of the sluice hoist to be powered on includes:

[0037] Obtaining the excessive current generated by the high-voltage direct current in the pre-built inverter module in the electric control unit package, and using the pre-built pre-charge resistor module to limit the excessive current to a preset current value;

[0038] Using the inverter module to convert the high-voltage direct current into three-phase sinusoidal alternating current according to the current value, using the pre-built pre-charge capacitor module to obtain pre-stored electrical energy, and generating starting high-voltage three-phase electricity according to the pre-stored electrical energy and the high-voltage direct current;

[0039] Using the starting high-voltage three-phase electricity to start the three-phase motor of the sluice hoist, and using the three-phase sinusoidal alternating current to supply power to the three-phase motor of the sluice hoist in the starting state;

[0040] Perform over - current detection on the three - phase motor of the sluice hoist;

[0041] When over - current is detected in the three - phase motor of the sluice hoist, the pre - constructed feedback resistance module is used to consume the over - current.

[0042] To solve the problems described in the background technology, the present invention designs a modular solid - state battery pack and an electronic control unit pack, which is convenient for transportation and use in extreme environments, greatly improving the emergency power supply efficiency; and the overall quality of the system is suitable for a single adult to transport, greatly alleviating the emergency pressure; in addition, outside the basic module of the electronic control unit pack, that is, the inverter module, by designing modules such as a pre - charge resistance module, a pre - charge capacitor module, a feedback resistance module, and a relay module, the problems that small - mass and small - volume batteries are difficult to start and easy to burn out when starting a large motor are solved. Therefore, the present invention can reduce the transportation difficulty of the generator set through the modular battery pack and the DC - to - AC conversion method in the scenario where the sluice lacks power due to extremely bad weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Schematic diagram of the structure of a portable emergency power supply system for sluice opening and closing provided by an embodiment of the present invention;

[0044] Figure 2 Principle block diagram of the solid - state battery pack and the electronic control unit pack in the portable emergency power supply system for sluice opening and closing provided by an embodiment of the present invention;

[0045] Figure 3 Working state diagram of the three - phase motor of the sluice hoist in the portable emergency power supply system for sluice opening and closing provided by an embodiment of the present invention;

[0046] Figure 4 Flow schematic diagram of the portable emergency power supply method for sluice opening and closing provided by an embodiment of the present invention

[0047] The realization, functional characteristics, and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] In order to make the objectives, technical solutions, and advantages of the present application more apparent, exemplary embodiments according to the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0049] An embodiment of the present application relates to a portable emergency power supply system for sluice opening and closing, as Figure 1 shown, mainly including a solid - state battery pack 1 (wherein,Figure 1 The semi-solid battery pack shown belongs to one of the solid battery packs and can be described as a specific embodiment), an electric control unit pack 2, a battery connection wire 3, and a three-phase motor connection wire 4. It is characterized in that the solid battery pack 1, the electric control unit pack 2, the battery connection wire 3, and the three-phase motor connection wire 4 can be disassembled into independent modules from each other;

[0050] The solid battery pack 1 is used to output high-voltage direct current;

[0051] The battery connection wire 3 is used to establish a circuit between the solid battery pack 1 and the electric control unit pack 2;

[0052] The electric control unit pack 2 is used to convert the high-voltage direct current into three-phase sinusoidal alternating current available for the three-phase motor of the water gate hoist to be energized;

[0053] The three-phase motor connection wire 4 is used to establish a circuit between the electric control unit pack 2 and the three-phase motor of the water gate hoist to be energized.

[0054] Specifically, referring to Figure 2 (left), it can be seen that the solid battery pack in the embodiment of the present invention includes a charging and automatic balancing circuit and a solid battery module, and can provide a high-voltage direct current of 595-686V DC (which can be achieved by connecting multiple small solid batteries in series). Among them, the solid battery belongs to a battery with a small volume and mass and a large discharge capacity among various batteries. The charging and automatic balancing circuit and the solid battery module are relatively common in the field of new energy electric vehicles and will not be elaborated here.

[0055] Furthermore, it should be known that the solid battery pack can supply power, but it cannot provide the pulling force to lift a water gate weighing dozens of tons. Therefore, an electric control unit pack is required to perform DC-AC conversion.

[0056] Specifically, referring to Figure 2 (right), in the embodiment of the present invention, the electric control unit pack includes: an inverter module, a pre-charge resistor module, a pre-charge capacitor module, a feedback resistor module, and a relay module;

[0057] The inverter module is used to convert the high-voltage direct current into three-phase sinusoidal alternating current available for the three-phase motor of the water gate hoist;

[0058] The pre-charge resistor module is used to connect a resistor with a preset value at the moment when the inverter module starts, and use the resistor to limit the excessive current generated at the moment when the inverter module is enabled;

[0059] The pre-charge capacitor module is used to release pre-stored electrical energy when a large current demand is generated by the three-phase motor of the sluice hoist at the moment of starting, and utilize the pre-stored electrical energy to alleviate the large current demand.

[0060] The feedback resistor module is used to connect the feedback resistor module when the three-phase motor of the sluice hoist controls the gate to close and the three-phase motor of the sluice hoist generates an overcurrent, and utilize the feedback resistor module to consume the overcurrent.

[0061] The relay module is used to deliver the three-phase sinusoidal alternating current to the three-phase motor of the sluice hoist according to a preset time delay, and is also used to self-check the circuit structure of the portable emergency power supply system for sluice opening and closing.

[0062] Among them, in the embodiment of the present invention, the processes of the various modules in the system working together are uniformly summarized into Figure 2 the drive circuit.

[0063] Among them, the excessive current refers to the current generated during the startup process of the inverter module that exceeds the rated carrying capacity.

[0064] Specifically, in the embodiment of the present invention, the inverter module is an IGBT (Insulated Gate Bipolar Transistor) inverter structure.

[0065] In detail, in the embodiment of the present invention, the pre-charge resistor module includes:

[0066] The resistor with the preset value can be dynamically configured according to the pre-constructed intelligent control circuit and the excessive current.

[0067] Specifically, in the embodiment of the present invention, to prevent the situation of excessive current in the IGBT during the discharge process, the present invention sets a pre-charge resistor module. At the moment of equipment startup, this module limits the discharge current by connecting a resistor with an appropriate resistance value. As the circuit operates stably, the access of the resistor is gradually reduced through the intelligent control circuit, enabling the current to smoothly transition to the normal working state. This effectively avoids the impact damage to the IGBT caused by excessive discharge current, extends the service life of the IGBT, and improves the reliability of the entire emergency power supply device. Among them, it can act as Figure 2 the braking unit.

[0068] In actual tests, when the pre-charge resistor module is not adopted, the peak value of the discharge current of the IGBT at startup can reach 80A, far exceeding its rated current. After adding the pre-charge resistor module, the peak value of the current is successfully limited within a safe range, only 25A, effectively protecting the IGBT and other related circuit components.

[0069] Specifically, in the embodiment of the present invention, the pre-charge capacitor module includes:

[0070] According to the pre-built power management service, the charging and discharging processes of the capacitors in the pre-charge capacitor module are controlled to ensure that the pre-charge capacitor module can be in a fully charged state after the start-up process of the three-phase motor of the sluice hoist is completed.

[0071] Wherein, the power management service refers to the service for controlling the charge and discharge efficiency of the solid-state battery pack.

[0072] Specifically, in the embodiment of the present invention, referring to Figure 3 the working diagram of the three-phase motor of the sluice hoist, the three-phase motor of the sluice hoist often requires a large starting current when starting. To solve this problem, the present invention develops a pre-charge capacitor module. At the moment of starting, the pre-charge capacitor module can quickly release the stored electric energy to provide additional current support for the hoist, thereby alleviating the instantaneous large current impact on the power supply. At the same time, through the collaborative work with the power management system, precise control of the capacitor charging and discharging is achieved to ensure that the capacitor can be quickly restored to the charged state after the start-up process is completed, making preparations for the next start. This design effectively ensures the smooth start of the three-phase motor of the sluice hoist and reduces the damage to the power supply and equipment caused by excessive starting current. For example, in the start-up test of the three-phase motor of the sluice hoist of model (QPQ2), when the pre-charge capacitor module was not used, the power supply voltage dropped from 390V to 308V instantaneously during starting, resulting in insufficient starting torque of the equipment. After using the pre-charge capacitor module, the voltage only dropped to 382V, and the equipment started smoothly and reliably.

[0073] Furthermore, in the embodiment of the present invention, when the three-phase motor of the sluice hoist descends, an overcurrent will be generated during its feedback braking process, which is extremely likely to cause the IGBT to burn out. For this reason, the present invention develops a feedback resistance module. When the module detects that the feedback braking current is too large, a feedback resistance with a resistance value of 200 ohms is automatically connected to consume the excess energy in the form of heat, thereby limiting the magnitude of the current and protecting the IGBT from damage caused by overcurrent. At the same time, by real-time monitoring the current change and intelligently adjusting the resistance value, it is ensured that the overcurrent can be effectively suppressed under different working conditions. For example, in actual operation, when the feedback resistance module was not connected during the descent of a three-phase motor of a sluice hoist, the peak value of the feedback braking current was as high as 230A, resulting in the IGBT being burned out many times. After connecting the feedback resistance module, the current was stably controlled within 20A, successfully solving the problem of the IGBT being burned out by overcurrent and ensuring the safe and reliable operation of the three-phase motor of the sluice hoist during the descent process.

[0074] Specifically, in the embodiment of the present invention, the outer surface of the electric controller package includes: a start button;

[0075] The start button is used to control the start of the relay module.

[0076] Specifically, in the embodiment of the present invention, a high-voltage delay relay is configured, and this relay plays a key control role in the opening and closing operation of the sluice. When the operator presses the one-key start button, the high-voltage delay relay first enters the working state. It will slowly connect the high-voltage power supply to the circuit of the sluice opening and closing equipment according to the preset time delay, avoiding damage to the equipment caused by instantaneous high-voltage impact. During the delay period, the relay will perform a series of detections and pre-treatments on the circuit to ensure that the circuit is in a stable and safe state. For example, it will detect whether the current is normal, whether the voltage is stable, and whether the connection of the equipment is good, etc. Once any abnormal situation is detected, the relay will immediately interrupt the start process and send an alarm signal to remind the operator to check and troubleshoot. When the delay time ends and all parameters of the circuit are normal, the high-voltage delay relay will accurately connect the high-voltage power supply to the sluice opening and closing equipment, realizing the smooth start of the sluice. This design not only greatly simplifies the operation process of sluice opening and closing, improves the operation convenience, enabling the operator to complete the start operation by simply pressing a button, but also effectively protects the safety of the equipment, extends the service life of the equipment, and ensures the reliability and stability of the sluice opening and closing operation through precise time control and comprehensive circuit detection.

[0077] In detail, in the embodiment of the present invention, the electric control package includes: a power supply interface and a motor interface;

[0078] The power supply interface is used for connecting one end of the battery connecting wire;

[0079] The motor interface is used for connecting one end of the three-phase motor connecting wire;

[0080] When the motor interface is a three-phase interface, if any two of the three-phase connectors of the three-phase motor connecting wire are exchanged in position, the working direction of the three-phase motor of the sluice hoist will be reversed.

[0081] Specifically, in the embodiment of the present invention, three groups of new energy quick silver-plated plugs are used at the three-phase power output port to solve the commutation operation of the hoist and avoid two problems: 1. The weight of the emergency power supply module exceeds the standard, resulting in inconvenient carrying; 2. Too many operation links lead to an increase in the failure rate.

[0082] When the hoist switches between rising and falling, it only needs to arbitrarily swap two phases through the quick plug to achieve, reducing the control operation links and the failure rate. This design greatly reduces the control operation links. Compared with the traditional method, it not only eliminates equipment such as commutation contactors, simplifies the operation process, but more importantly, reduces the failure rate and improves the reliability and stability of the emergency package in emergency situations.

[0083] In addition, this solution also conducts adaptive design on parts other than the principle of the system.

[0084] Specifically, in the embodiments of the present invention, the outer shells of the solid-state battery pack and the electronic control unit pack are made of materials with heat dissipation and safety properties. The overall weight of the portable emergency power supply system for opening and closing the water gate does not exceed 25 kg, which is suitable for the comfortable load range that can be carried by a single adult as specified in the pre-established ISO 11228-1 standard.

[0085] Specifically, the present invention adopts a modular combination design of a solid-state battery pack and an electronic control unit pack. The solid-state battery pack is composed of high-performance and high-energy-density semi-solid battery cells. After encapsulation and arrangement, it has good heat dissipation performance and safety protection, and can stably output electric energy to meet the emergency power supply requirements of the water gate.

[0086] Specifically, in the embodiments of the present invention, both the solid-state battery pack and the electronic control unit pack have multiple specifications, and the system can be configured according to the number and model of the three-phase motors of the water gate hoist.

[0087] Specifically, in the embodiments of the present invention, the electronic control unit pack integrates a microprocessor control chip and a precision power management circuit (the power management service), which can accurately monitor and automatically balance the charging and discharging processes of the solid-state battery pack. This modular combination structure has significant advantages. Not only is it convenient to disassemble and assemble in terms of physical structure, facilitating transportation and carrying, but also in terms of function, it can flexibly select appropriate specifications of the solid-state battery pack and the electronic control unit pack for combination according to the power consumption requirements of different water gate opening and closing devices, greatly improving the versatility and adaptability of the device. For example, for three-phase motors of water gate hoists with different powers, corresponding capacity solid-state battery packs and adapted electronic control unit packs can be quickly matched to achieve plug-and-play and quickly establish an emergency power supply link.

[0088] To solve the problems described in the background technology, the present invention designs modular solid-state battery packs and electronic control unit packs, which are convenient for transportation and use in extreme environments, greatly improving the emergency power supply efficiency; and the overall quality of the system is suitable for transportation by a single adult, greatly alleviating the emergency pressure; in addition, outside the basic module of the electronic control unit pack, that is, the inverter module, by designing modules such as a pre-charge resistor module, a pre-charge capacitor module, a feedback resistor module, and a relay module, the problems that small-quality and small-volume batteries are difficult to start and easily burned when starting large motors are solved. Therefore, the present invention can reduce the transportation difficulty of the generator set through modular battery packs and in combination with the DC-to-AC conversion method in the scenario where the water gate lacks power due to extremely bad weather.

[0089] Further, referring to Figure 4 as shown, the embodiments of the present invention also provide a method of using Figure 1The control method executed by the portable emergency power supply system for opening and closing a sluice gate includes:

[0090] Obtain a modular solid-state battery pack and an electronic control unit pack;

[0091] Utilize the solid-state battery pack to generate DC high-voltage electricity and send the DC high-voltage electricity to the electronic control unit pack;

[0092] Utilize the electronic control unit pack to perform voltage inversion regulation on the received DC high-voltage electricity to obtain three-phase sinusoidal alternating current, and use the three-phase sinusoidal alternating current to start and operate the three-phase motor of the sluice gate hoist to be electrified.

[0093] Specifically, in the embodiment of the present invention, the step of utilizing the electronic control unit pack to perform voltage inversion regulation on the received DC high-voltage electricity to obtain three-phase sinusoidal alternating current, and using the three-phase sinusoidal alternating current to start and operate the three-phase motor of the sluice gate hoist includes:

[0094] Obtain the excessive current generated by the pre-built inversion module in the electronic control unit pack due to the DC high-voltage electricity, and use the pre-built pre-charge resistor module to limit the excessive current to a preset current value;

[0095] Utilize the inversion module to convert the DC high-voltage electricity into three-phase sinusoidal alternating current according to the current value, use the pre-built pre-charge capacitor module to obtain pre-stored electrical energy, and generate starting high-voltage three-phase electricity according to the pre-stored electrical energy and the DC high-voltage electricity;

[0096] Use the starting high-voltage three-phase electricity to start the three-phase motor of the sluice gate hoist, and use the three-phase sinusoidal alternating current to supply power to the three-phase motor of the sluice gate hoist in the starting state;

[0097] Perform over-current detection on the three-phase motor of the sluice gate hoist;

[0098] When over-current is detected in the three-phase motor of the sluice gate hoist, use the pre-built feedback resistor module to consume the over-current.

[0099] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A portable emergency power supply system for opening and closing a sluice, comprising a solid-state battery pack, an electronic control unit pack, a battery connection cable and a three-phase motor connection cable, characterized in that The solid-state battery pack, the electric control unit pack, the battery connection cable, and the three-phase motor connection cable can be disassembled into independent modules from each other; The solid-state battery pack is used to output high-voltage direct current; The battery connection cable is used to establish a circuit between the solid-state battery pack and the electric control unit pack; The electric control unit pack is used to convert the high-voltage direct current into three-phase sinusoidal alternating current available for the three-phase motor of the water gate hoist to be energized; The three-phase motor connection cable is used to establish a circuit between the electric control unit pack and the three-phase motor of the water gate hoist to be energized.

2. The portable emergency power supply system for opening and closing a floodgate according to claim 1, wherein The electric control unit pack includes: an inverter module, a pre-charge resistor module, a pre-charge capacitor module, a feedback resistor module, and a relay module; The inverter module is used to convert the high-voltage direct current into three-phase sinusoidal alternating current available for the three-phase motor of the water gate hoist; The pre-charge resistor module is used to connect a resistor with a preset value at the moment when the inverter module starts, and use the resistor to limit the excessive current generated at the moment when the inverter module is enabled; The pre-charge capacitor module is used to release the pre-stored electric energy when the three-phase motor of the water gate hoist has a large current demand at the moment when the three-phase motor of the water gate hoist starts, and use the pre-stored electric energy to relieve the large current demand; The feedback resistor module is used to connect the feedback resistor module when the three-phase motor of the water gate hoist controls the gate to close and the three-phase motor of the water gate hoist generates an overcurrent, and use the feedback resistor module to consume the overcurrent; The relay module is used to deliver the three-phase sinusoidal alternating current to the three-phase motor of the water gate hoist according to a preset time delay, and is also used to self-check the circuit structure of the portable emergency power supply system for water gate opening and closing.

3. The portable emergency power supply system for opening and closing the floodgate according to claim 2, characterized in that, The pre-charge resistor module includes: The resistor with the preset value can be dynamically configured according to a pre-constructed intelligent control circuit and the excessive current.

4. The portable emergency power supply system for opening and closing the floodgate according to claim 2, wherein, The pre-charge capacitor module includes: According to a pre-constructed power management service, control the charging and discharging process of the capacitor of the pre-charge capacitor module to ensure that the pre-charge capacitor module can be in a fully charged state after the start-up process of the three-phase motor of the water gate hoist ends.

5. The portable emergency power supply system for opening and closing a sluice according to claim 2, wherein, The outer surface of the electric control unit pack includes: a start button; The start button is used to control the start of the relay module.

6. The portable emergency power supply system for opening and closing a sluice according to claim 1, characterized in that, The electric control unit pack includes: a power supply interface and a motor interface; The power supply interface is used for one end of the battery connection cable to be connected; The motor interface is used for one end of the three-phase motor connection cable to be connected; When the motor interface is a three-phase interface, exchange the positions of any two of the three-phase connectors of the three-phase motor connection cable, and the working direction of the three-phase motor of the water gate hoist will be reversed.

7. The portable emergency power supply system for opening and closing a sluice according to claim 1, characterized in that, The outer shells of the solid-state battery pack and the electric control unit pack are made of materials with heat dissipation and safety properties. The overall weight of the portable emergency power supply system for water gate opening and closing is less than 25 kg, which is suitable for the comfortable load range that can be carried by a single adult according to the pre-constructed ISO 11228-1 standard.

8. The portable emergency power supply system for opening and closing the floodgate according to claim 1, wherein, Both the solid-state battery pack and the electronic control unit pack have multiple specifications, and the system can be configured according to the number and model of the three-phase motors of the sluice hoist.

9. A portable emergency power supply method for opening and closing a sluice, characterized in that, The method includes: Obtaining a modular solid-state battery pack and an electronic control unit pack; Using the solid-state battery pack to generate DC high-voltage electricity and sending the DC high-voltage electricity to the electronic control unit pack; Using the electronic control unit pack to perform voltage inversion regulation on the received DC high-voltage electricity to obtain three-phase sinusoidal alternating current, and using the three-phase sinusoidal alternating current to start and operate the three-phase motor of the sluice hoist to be electrified.

10. The portable emergency power supply method for sluice opening and closing according to claim 9, characterized in that, The step of using the electronic control unit pack to perform voltage inversion regulation on the received DC high-voltage electricity to obtain three-phase sinusoidal alternating current, and using the three-phase sinusoidal alternating current to start and operate the three-phase motor of the sluice hoist to be electrified includes: Obtaining the excessive current generated by the DC high-voltage electricity in the pre-built inverter module in the electronic control unit pack, and using the pre-built pre-charge resistor module to limit the excessive current to a preset current value; Using the inverter module to convert the DC high-voltage electricity into three-phase sinusoidal alternating current according to the current value, using the pre-built pre-charge capacitor module to obtain pre-stored electric energy, and generating starting high-voltage three-phase electricity according to the pre-stored electric energy and the DC high-voltage electricity; Using the starting high-voltage three-phase electricity to start the three-phase motor of the sluice hoist, and using the three-phase sinusoidal alternating current to supply power to the three-phase motor of the sluice hoist in the starting state; Performing over-current detection on the three-phase motor of the sluice hoist; When over-current is detected in the three-phase motor of the sluice hoist, using the pre-built feedback resistor module to consume the over-current.

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