A mobile lithium battery energy storage and power supply system

Abstract

The utility model relates to power supply system technical field, concretely relates to a mobile lithium battery energy storage synergistic power supply system, including the car body, be provided with battery module, hybrid power ware, three -phase generator and inner charging module on the car body, the flywheel mechanism can be rotatably installed on the car body, the battery module passes through inverter and hybrid power ware electricity is connected, hybrid power ware passes through the belt and the input end connection of flywheel mechanism, the output end of flywheel mechanism passes through the belt and the input end connection of three -phase generator, the output end of three -phase generator is connected with the electricity connection box, the output end of three -phase generator passes through the wire connection inner charging module, the inner charging module can charge the battery module.

Description

Technical Field

[0001] This utility model relates to the field of power supply system technology, specifically to a mobile lithium battery energy storage and efficiency-enhancing power supply system. Background Technology

[0002] With the rapid development of new energy technologies, lithium battery energy storage systems, due to their advantages such as high energy density, high charge and discharge efficiency, and long service life, are widely used in emergency power supply, outdoor work power supply, and auxiliary power supply for new energy vehicles. In practical applications, to meet the mobile power supply needs of different scenarios, mobile lithium battery energy storage systems have emerged. Their core requirement is to ensure a continuous and stable power supply while maximizing energy utilization efficiency and minimizing energy loss.

[0003] Currently, most existing mobile lithium battery energy storage systems adopt a basic structure of "battery module + inverter + external charging interface." The battery module is charged by an external power source, and then the battery module supplies power to the load. For example, patent CN213936419U discloses a ternary lithium battery containerized mobile energy storage station. This device, through its movable vehicle body and large-capacity battery pack, achieves flexible power supply in outdoor scenarios. Its internal ternary lithium battery modules supply the required type of electrical energy to the outside via a converter. However, this technical solution has significant shortcomings in energy recovery and efficiency: when the internal battery module's power is insufficient, it needs to rely on an external power source for charging, lacking an independent energy replenishment mechanism; in remote scenarios without external power supply, the system's endurance is limited, making it difficult to meet the demand for continuous power supply over long periods. Utility Model Content

[0004] In order to overcome one of the shortcomings of the existing technology, the purpose of this utility model is to provide a mobile lithium battery energy storage and power supply system to achieve efficient energy utilization and autonomous power replenishment, and improve the system's power supply stability and endurance.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A mobile lithium battery energy storage and power supply system includes a vehicle body. A battery module, a hybrid power unit, a three-phase generator, and an internal charging module are mounted on the vehicle body. A flywheel mechanism is rotatably mounted on the vehicle body. The battery module is electrically connected to the hybrid power unit via an inverter. The hybrid power unit is connected to the input end of the flywheel mechanism via a belt. The output end of the flywheel mechanism is connected to the input end of the three-phase generator via a belt. The output end of the three-phase generator is connected to a junction box. The output end of the three-phase generator is connected to the internal charging module via a wire. The internal charging module can charge the battery module.

[0007] In some possible implementations, the flywheel mechanism includes a mounting bracket, a main shaft rotatably mounted on the mounting bracket, and a flywheel body coaxially mounted on the main shaft. The mounting bracket is mounted on the vehicle body, and a plurality of permanent magnets are uniformly arranged circumferentially on the flywheel body. A plurality of coils are arranged on the vehicle body on the outer periphery of the flywheel body, and the coils are electrically connected to the battery module.

[0008] In some possible implementations, the battery module includes a battery and a power controller, the battery being electrically connected to the power controller, and the power controller being electrically connected to an inverter, a coil, a hybrid power unit, and an internal charging module.

[0009] In some possible implementations, a protective cover is provided on the vehicle body on the outer periphery of the flywheel body.

[0010] In some possible implementations, the internal charging module is a three-phase charger.

[0011] In some possible implementations, the internal charging module includes a three-phase drive motor, an auxiliary generator, and an internal charger. The three-phase drive motor is electrically connected to the three-phase generator via wires, and the three-phase drive motor drives the auxiliary generator to generate electricity. The auxiliary generator is connected to the battery module via the internal charger.

[0012] In some possible implementations, the battery module is provided with an external charging interface.

[0013] In some possible implementations, the vehicle body includes a frame, a number of wheels mounted on the frame, and a cover mounted on the frame, wherein the battery module, hybrid power unit, three-phase generator, and internal charging module are all mounted on the frame and located inside the cover.

[0014] In some possible implementations, a towing hook is provided on the frame.

[0015] In some possible implementations, a number of lugs are provided on the periphery of the frame.

[0016] In some possible implementations, the hybrid power unit includes a series hybrid system consisting of a fuel engine and an electric motor connected in series.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model discloses a mobile lithium battery energy storage and power supply system with a closed-loop structure consisting of a battery module, a hybrid power unit, a flywheel mechanism, a three-phase generator, and an internal charging module. The flywheel mechanism stores the kinetic energy transmitted by the hybrid power unit and recovers excess energy through electromagnetic induction between a permanent magnet and a coil, thus recharging the battery module and solving the energy waste problem of traditional systems. Simultaneously, the electrical energy generated by the three-phase generator can autonomously replenish the battery module through the internal charging module, eliminating reliance on an external power source and significantly improving the system's range in scenarios without external power.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a front view of an embodiment of the present utility model;

[0021] Figure 2 This is a top view of an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of another embodiment of the present invention.

[0024] Explanation of icon numbers:

[0025] 10. Vehicle body, 11. Towing hook, 12. Frame, 13. Wheels, 14. Cover;

[0026] Battery module 20, storage battery 21, power controller 22;

[0027] Hybrid power unit 30;

[0028] 40 three-phase generator;

[0029] Internal charging module 50, three-phase drive motor 51, auxiliary generator 52, internal charger 53;

[0030] Flywheel mechanism 60, mounting bracket 61, main shaft 62, flywheel body 63, permanent magnet 64, coil 65;

[0031] Inverter 70;

[0032] Connect to the electrical box 80. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0034] Reference Figures 1 to 4 The mobile lithium battery energy storage and power supply system shown includes a vehicle body 10. A battery module 20, a hybrid power unit 30, a three-phase generator 40, and an internal charging module 50 are mounted on the vehicle body 10. A flywheel mechanism 60 is rotatably mounted on the vehicle body 10. The battery module 20 is electrically connected to the hybrid power unit 30 via an inverter 70. The hybrid power unit 30 is connected to the input end of the flywheel mechanism 60 via a belt. The output end of the flywheel mechanism 60 is connected to the input end of the three-phase generator 40 via a belt. The output end of the three-phase generator 40 is connected to a junction box 80 and the output end of the three-phase generator 40 is connected to the internal charging module 50 via a wire. The internal charging module 50 can charge the battery module 20.

[0035] Specifically, in the above embodiments, the hybrid power unit 30 preferably uses a common dual-power-source diesel generator or a power system consisting of a fuel engine and an electric motor connected in series. In some possible implementations, the hybrid power unit 30 includes a series hybrid power system consisting of a fuel engine and an electric motor connected in series. This system is a common power system on the market, such as the diesel-electric propulsion system used in new ships. When the battery module 20 has low internal power and there is external mains power supplementation, or when the battery module 20 cannot directly supply three-phase power, in order to ensure the stability of the output power of the entire system, the hybrid power unit 30 can use the function of an electric motor. In this case, the DC current inside the battery module 20 is converted into AC current by the inverter 70, and the AC current supplies power to the hybrid power unit 30. At this time, the electric motor inside the hybrid power unit 30 stably drives the three-phase generator 40 through the flywheel mechanism 60 to output stable three-phase AC power. When the battery module 20 is out of power and there is no external mains power, the internal combustion engine of the hybrid power unit 30 acts as a power source, driving the three-phase generator 40 to output stable three-phase AC power through the flywheel mechanism 60, while also charging the battery module 20.

[0036] This application employs a closed-loop structure consisting of a battery module 20, a hybrid power unit 30, a flywheel mechanism 60, a three-phase generator 40, and an internal charging module 50. The flywheel mechanism stores the kinetic energy transmitted by the hybrid power unit 30 and recovers excess energy through electromagnetic induction between a permanent magnet and a coil, thus recharging the battery module 20 and solving the energy waste problem of traditional systems. The hybrid power unit 30 utilizes multiple power source inputs, and the electrical energy generated by the three-phase generator 40 can autonomously replenish the battery module 20 via the internal charging module 50, eliminating reliance on an external power source and significantly improving the system's range in scenarios without external power supply.

[0037] See Figures 1 to 2 In some possible implementations, for ease of movement and adaptability to outdoor use, the vehicle body 10 includes a frame 12, several wheels 13 mounted on the frame 12, and a cover 14 mounted on the frame 12. The battery module 20, hybrid power unit 30, three-phase generator 40, and internal charging module 50 are all mounted on the frame 12 and located inside the cover 14. The frame 12 is welded from rectangular steel tubing, resulting in high strength and light weight. The wheels 13 are made of vacuum off-road tires, suitable for complex outdoor terrains such as gravel and mud. The cover 14 is made of fiberglass, providing waterproof, sunproof, and impact-resistant properties. It is equipped with an internal cooling fan that automatically activates when the internal temperature exceeds 40°C, ensuring that all components operate at a suitable temperature.

[0038] In this application, for ease of movement, a tow hook 11 is provided on the frame 12. The tow hook 11 is made of forged alloy steel and is fixed to the front end of the frame 12 by high-strength bolts. The tow hook 11 is equipped with an anti-detachment pin, which can reliably connect to a trailer or towing vehicle to realize long-distance movement of the system.

[0039] In some possible implementations, the frame 12 is provided with a number of lifting lugs on its periphery. There are a total of 4 lifting lugs 16, symmetrically distributed on both sides of the frame 12. Each lifting lug has a load-bearing capacity of not less than 500 kg, which facilitates the lifting of the system onto trucks, ships and other transportation vehicles by a crane, thereby improving transportation flexibility.

[0040] See Figure 3 and Figure 4In the above embodiments, to facilitate energy storage and power supply, in one embodiment of this application, the battery module 20 includes a battery 21 and a power controller 22. The battery 21 is electrically connected to the power controller 22, and the power controller 22 is electrically connected to the coil 65, the hybrid power unit 30, and the internal charging module 50 via an inverter 70. The battery 21 preferably uses a lithium iron phosphate battery pack, which has high safety and long cycle life. The power controller 22 has a built-in MCU chip, which can monitor the battery's charge, voltage, and temperature parameters in real time, and automatically adjust the charging and discharging strategy to avoid overcharging or over-discharging damage to the battery. The power controller 22 is the controller for supplying power from the battery to the outside; for example, it can be implemented using a commercially available BMS, which will not be detailed here, but can also be referenced from CN202410165865.7 - Battery System and Control Method of Battery System, Technical Solutions in Electronic Equipment.

[0041] In some possible implementations, the internal charging module 50 is a three-phase charger. The input terminal of the three-phase charger is adapted to the 380V output voltage of the three-phase generator 40, and the output terminal is connected to the battery 21 through the power controller 22. It has automatic voltage regulation and current limiting functions, and can adjust the charging current according to the real-time power of the battery 21 to protect the battery life while ensuring fast charging.

[0042] In some possible implementations, the battery module 20 is provided with an external power charging interface. The external power charging interface includes a 220V single-phase AC interface and a 380V three-phase AC interface, which are respectively adapted to household sockets and industrial power supply interfaces, enabling rapid recharging of the battery 21 in scenarios with external power supply, thus compensating for the lack of self-charging efficiency.

[0043] In some embodiments, to facilitate charging of the battery module 20 using the three-phase generator 40, in one embodiment of this application, the internal charging module 50 is a three-phase charger. The three-phase charger is model ZS-380 / 48, with an input voltage adapted to the output voltage of the three-phase generator 40. The three-phase charger has a built-in rectifier bridge and Buck converter circuit, which can convert three-phase AC power into stable DC power, charging the battery 21 through the power controller 22. The three-phase charger has two-stage charging modes: constant current and constant voltage. Constant current charging is used when the SOC is below 80%, and constant voltage charging is switched when the SOC is above 80% to avoid overcharging and damage to the battery. These are conventional technical means and will not be detailed here.

[0044] See Figure 4In one embodiment of this application, the internal charging module 50 includes a three-phase drive motor 51, an auxiliary generator 52, and an internal charger 53. The three-phase drive motor 51 is electrically connected to the three-phase generator 40 via wires, and drives the auxiliary generator 52 to generate electricity. The auxiliary generator 52 is connected to the battery module 20 via the internal charger 53. The three-phase drive motor 51 and the auxiliary generator 52 are directly connected via a coupling to reduce power transmission losses. The auxiliary generator 52 outputs stable AC power, which is rectified and regulated by the internal charger 53 and converted into DC power suitable for the battery 21, making it suitable for scenarios with high charging voltage accuracy requirements. Although the efficiency of this energy conversion method is relatively low, it can be used as a replacement when the three-phase charger fails.

[0045] See Figure 3 and Figure 4 To better store energy and stably drive the three-phase generator 40 for normal power generation, in one embodiment of this application, the flywheel mechanism 60 includes a mounting frame 61, a main shaft 62 rotatably mounted on the mounting frame 61, and a flywheel body 63 coaxially mounted on the main shaft 62. The mounting frame 61 is mounted on the vehicle body 10. A plurality of permanent magnets 64 are evenly arranged circumferentially on the flywheel body 63. A plurality of coils 65 are arranged on the outer periphery of the flywheel body 63 on the vehicle body 10. The coils 65 are electrically connected to the battery module 20. The flywheel body 63 is made of high-strength alloy steel with a hardened surface to improve wear resistance and fatigue resistance. The permanent magnets 64 are made of neodymium iron boron strong magnetic material, with adjacent permanent magnets arranged with alternating polarities to ensure a stable induced current is generated when they cooperate with the coils 65 to charge the battery module 20, or the periodic magnetic field generated by the coils 65 can be used to drive the flywheel body 63 to rotate, increasing the torque of the entire flywheel body 63 and adapting to the normal power generation of the three-phase generator 40.

[0046] In the above embodiments, to better protect the flywheel body 63 and prevent external debris from impacting the permanent magnet 64 during rotation, ensuring proper engagement between the permanent magnet and the coil 65, a protective cover is provided on the outer periphery of the flywheel body 63 on the vehicle body 10. The protective cover is made of stainless steel sheet and is fixed to the vehicle body 10 with bolts. Sound insulation cotton is pasted on its inner side, which can prevent foreign objects from being drawn into the flywheel body 63 and affecting its rotation, and can also reduce the noise generated by the high-speed rotation of the flywheel, thereby improving the system's operational safety and environmental adaptability.

[0047] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A mobile lithium battery energy storage and power supply system, characterized in that, The system includes a vehicle body, on which a battery module, a hybrid power unit, a three-phase generator, and an internal charging module are mounted. A flywheel mechanism is rotatably mounted on the vehicle body. The battery module is electrically connected to the hybrid power unit via an inverter. The hybrid power unit is connected to the input end of the flywheel mechanism via a belt. The output end of the flywheel mechanism is connected to the input end of the three-phase generator via a belt. The output end of the three-phase generator is connected to a junction box. The output end of the three-phase generator is connected to the internal charging module via a wire. The internal charging module is capable of charging the battery module.

2. The mobile lithium battery energy storage and power supply system according to claim 1, characterized in that: The flywheel mechanism includes a mounting frame, a main shaft rotatably mounted on the mounting frame, and a flywheel body coaxially mounted on the main shaft. The mounting frame is mounted on the flywheel body and a plurality of permanent magnets are evenly arranged circumferentially. A plurality of coils are arranged on the outer periphery of the flywheel body on the vehicle body, and the coils are electrically connected to the battery module.

3. The mobile lithium battery energy storage and power supply system according to claim 2, characterized in that: The battery module includes a storage battery and a power controller. The storage battery is electrically connected to the power controller, and the power controller is electrically connected to the coil, the hybrid power unit, and the internal charging module via an inverter.

4. A mobile lithium battery energy storage and power supply system according to claim 2, characterized in that: A protective cover is provided on the outer periphery of the flywheel body on the vehicle body.

5. A mobile lithium battery energy storage and power supply system according to claim 1, characterized in that: The internal charging module is a three-phase charger.

6. A mobile lithium battery energy storage and power supply system according to claim 1, characterized in that: The internal charging module includes a three-phase drive motor, an auxiliary generator, and an internal charger. The three-phase drive motor is electrically connected to the three-phase generator via wires. The three-phase drive motor drives the auxiliary generator to generate electricity. The auxiliary generator is connected to the battery module via the internal charger.

7. A mobile lithium battery energy storage and power supply system according to any one of claims 1-6, characterized in that: The battery module is equipped with an external power charging interface.

8. A mobile lithium battery energy storage and power supply system according to any one of claims 1-6, characterized in that: The vehicle body includes a frame, several wheels mounted on the frame, and a cover mounted on the frame. The battery module, hybrid power unit, three-phase generator, and internal charging module are all mounted on the frame and located inside the cover.

9. A mobile lithium battery energy storage and power supply system according to claim 8, characterized in that: The vehicle frame is equipped with a towing hook.

10. A mobile lithium battery energy storage and power supply system according to claim 1, characterized in that: The hybrid power unit includes a series hybrid system consisting of a fuel engine and an electric motor connected in series.

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