A mobile energy storage system for highway fast charging

Abstract

The application provides a mobile energy storage system for highway fast charging, and relates to the technical field of energy storage equipment, which comprises a lower mobile base, an outer protective box, an inner energy storage module and a solar cell panel, the top of the lower mobile base is fixedly connected with the outer protective box, the inner energy storage module is arranged in the inner part of the outer protective box, the top of the outer protective box is hingedly connected with the solar cell panel, the two sides of the lower mobile base are symmetrically rotatably connected with mobile wheels, the two sides of the lower mobile base are symmetrically slidably connected with side supporting rods, and the lower end of the side supporting rod is rotatably connected with a water storage tank. The water in the water storage tank is communicated with the upper spraying frame to spray the external heat dissipation fins, so that the inner energy storage module is kept in a reasonable stable temperature, the self-discharge loss of the battery pack is effectively reduced, the power consumption is smaller than that of liquid cooling, and the problem that the working of the compressor refrigeration equipment consumes a large amount of storage power of the mobile energy storage system is solved.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and in particular to a mobile energy storage system for fast charging on highways. Background Technology

[0002] With the development of new energy electric vehicles, the demand for charging is also increasing. Energy storage systems are devices that integrate the functions of energy storage, conversion and output. They can be flexibly moved and supply power. During holidays, they can be moved in advance to highway service stations to meet the sudden increase in charging demand on highways.

[0003] During the charging and discharging process, the mobile energy storage system generates a large amount of heat. The mobile energy storage system actively cools down through its internal compressor cooling equipment. The operation of the compressor cooling equipment consumes a large amount of the stored electricity of the mobile energy storage system. At the same time, the compressor cooling equipment exchanges heat with the outside to dissipate heat, resulting in a lot of heat near the mobile energy storage system. Excessive temperature will reduce the operating power of nearby vehicles or charging piles and other equipment. Utility Model Content

[0004] This application provides a mobile energy storage system for fast charging on highways. The water inside the water tank is connected to an upper spray frame to spray the external heat dissipation fins, thereby controlling the temperature of the internal energy storage module and ensuring that the internal energy storage module is in a reasonable and stable state. This effectively reduces the self-discharge loss of the battery pack and consumes less power compared to liquid cooling, thus reducing the discharge pressure of the internal energy storage module. The internal energy storage module falls directly into the water tank for immersion treatment, enabling emergency handling in case of abnormal conditions of the internal energy storage module.

[0005] This application provides a mobile energy storage system for fast charging on highways, specifically including a lower mobile base, an outer protective housing, an inner energy storage module, and a solar panel. The outer protective housing is fixedly connected to the top of the lower mobile base, and the inner energy storage module is disposed inside the outer protective housing. The solar panel is hinged to the top of the outer protective housing. Moving wheels are symmetrically rotatably connected to both sides of the lower mobile base, and side support rods are symmetrically slidably connected to both sides of the lower mobile base. The lower ends of the side support rods are rotatably connected to a water tank, and a central electric screw is rotatably connected to the middle of the lower mobile base. Both sides of the electric screw are screwed with side moving frames. The moving wheels are made of high-strength rubber and can be either inflatable or solid. The diameter of the moving wheels is 400mm and the single wheel can bear a load of 500kg. The electric screw has a pitch of 5mm and is driven by a 3kW servo motor. The lifting speed is adjustable from 0-100mm / min. The water tank has a capacity of 500L and a built-in water filtration device. It is controlled by a liquid level sensor and a temperature sensor. When the temperature of the internal energy storage module exceeds 50℃, the pump is started to deliver water to the upper spray frame for circulation and cooling.

[0006] Furthermore, the upper ends of the side moving frame and the side support rod are rotatably connected. When the central electric screw rotates, the side moving frame moves in the opposite direction along the central electric screw, and the water tank moves vertically up and down. The water tank descends to the ground to form multi-point support. The water tank and the ground increase the moving resistance of the lower moving base and increase the stability of the lower moving base. The water tank surrounds the lower opening of the outer protective box.

[0007] Furthermore, a front through hole is provided at the lower end of the outer protective box, and inner support blocks are horizontally slidable on both sides of the lower part of the outer protective box. An outer connecting rod is rotatably connected to the outer side of the inner support block. An outer pull rod is rotatably connected to both sides of the lower part of the outer protective box. A rear through hole is provided at the upper part of the tail end of the outer protective box, and an upper spray frame is slidably connected to the upper part of the outer protective box.

[0008] Furthermore, the tail end of the outer connecting rod is rotatably connected to the middle of the outer pull rod, and the top of the inner support block is horizontally slidably connected to the top of the lower moving base. The outer pull rod drives the inner support block to move outward through the outer connecting rod.

[0009] Furthermore, the inner energy storage module has lateral positioning sliders protruding on both sides, and external heat dissipation fins are arranged in an array at intervals on both sides of the middle part of the inner energy storage module. The inner energy storage module contains a battery. The inner energy storage module and the battery are bonded together by phase change material and dissipated by external heat dissipation fins. When the temperature of the inner energy storage module rises, the cooling water in the water tank is sprayed onto the surface of the external heat dissipation fins through the upper spray frame.

[0010] Furthermore, the lateral positioning slider and the vertical groove inside the outer protective box are slidably connected. The bottom of the lateral positioning slider and the top of the inner support block are in close contact. After the inner support block and the lateral positioning slider are separated, the inner support block retracts to release the constraint on the lateral positioning slider, and the inner energy storage module falls directly into the water tank for partial immersion treatment. At the same time, the upper spray frame continuously sprays water on the inner energy storage module to realize emergency handling work after the inner energy storage module malfunctions.

[0011] Furthermore, the internal energy storage module is located above the water tank, and the outer protective casing is equipped with an upper spray frame above the external heat dissipation fins. The upper spray frame and the water tank are connected by a pump and pipeline. The upper spray frame sprays water onto the external heat dissipation fins to control the temperature of the internal energy storage module.

[0012] Furthermore, the side of the solar panel is rotatably connected to the telescopic rod of the telescopic cylinder, and the lower end of the telescopic cylinder is rotatably connected to the top of the outer protective box. The telescopic cylinder has a stroke of 200mm and can adjust the tilt angle of the solar panel to 15°-60° to achieve efficient conversion of light energy. The solar panel adjusts the tilt angle to the optimal light-receiving angle through the telescopic cylinder and stores electrical energy in the internal energy storage module.

[0013] This application provides a mobile energy storage system for fast charging on highways, which has the following advantages:

[0014] During the movement of the lower mobile base, the water tank rises below the outer protective housing, forming a fully enclosed anti-collision barrier. This prevents stones and other debris from entering the outer protective housing and impacting the inner energy storage module, thus providing better protection for the inner energy storage module. It can effectively resist the impact of stones (kinetic energy ≤50J) during high-speed travel. Compared with the traditional open structure, the physical protection capability of the inner energy storage module is greatly improved. After the equipment reaches the work position, the water tank descends to the ground to form multi-point support. The water tank and the ground increase the movement resistance of the lower mobile base, increasing its stability. It can still remain stable under a 10° slope.

[0015] After the water tank is filled with water, the overall center of gravity is further lowered, improving stability. The water inside the water tank is connected to the spray frame to spray the external heat dissipation fins, thereby controlling the temperature of the internal energy storage module and ensuring that the internal energy storage module is in a reasonable and stable state. This effectively reduces the self-discharge loss of the battery pack and consumes less power compared to liquid cooling, thus reducing the discharge pressure on the internal energy storage module.

[0016] The rapid energy release mechanism, composed of the outer pull rod and the outer connecting rod, detects a thermal runaway signal from the internal energy storage module (such as a sudden temperature rise >80℃ or abnormal voltage fluctuations). The outer pull rod drives the inner support block to move outward through the outer connecting rod. After the inner support block and the lateral positioning slider separate, the internal energy storage module falls directly into the water tank for immersion treatment. This enables emergency handling after the internal energy storage module experiences an abnormal situation, extinguishing or delaying the spontaneous combustion of the internal energy storage module in advance and reducing the scope of impact. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the accompanying drawings will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of this application and are not intended to limit the scope of this application.

[0019] In the attached diagram:

[0020] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0021] Figure 2 A schematic diagram of the lower movable base structure of this application is shown;

[0022] Figure 3 This invention provides a schematic diagram of the lower movable base in its lowered state.

[0023] Figure 4 A schematic diagram of the internal support block of this application is shown;

[0024] Figure 5 A schematic diagram of the rear through-hole structure of this application is shown;

[0025] Figure 6 A schematic diagram of the upper spray frame of this application is shown;

[0026] Figure 7 A schematic diagram of the internal energy storage module structure of this application is shown;

[0027] Figure 8 A structural schematic diagram of the internal energy storage module, the lower movable base, and the outer protective housing of this application in their separated states is shown.

[0028] Figure label:

[0029] 1. Lower movable base; 101. Movable wheel; 102. Side support rod; 103. Side movable frame; 104. Middle electric screw; 105. Water tank; 2. Outer protective housing; 201. Front through hole; 202. Inner support block; 203. Outer connecting rod; 204. Outer pull rod; 205. Rear through hole; 206. Upper spray frame; 3. Inner energy storage module; 301. Lateral positioning slider; 302. External heat dissipation fins; 4. Solar panel; 401. Telescopic cylinder. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0031] Example 1: Please refer to... Figures 1 to 8 :

[0032] This application proposes a mobile energy storage system for fast charging on highways, including a lower mobile base 1, an outer protective casing 2, an inner energy storage module 3, and a solar panel 4. The lower mobile base 1 has symmetrically rotatably connected mobile wheels 101 on both sides, and symmetrically slidably connected side support rods 102 on both sides. The lower ends of the side support rods 102 are rotatably connected to a water tank 105. A central electric screw 104 is rotatably connected to the middle of the lower mobile base 1, and side mobile frames 103 are screwed to both sides of the central electric screw 104. The mobile wheels 101 are made of high-strength rubber and can be either inflatable or solid, with a diameter of 400mm and a single wheel load capacity of 500kg. The central electric screw 104 has a 5mm pitch and is driven by a 3kW servo motor, with an adjustable lifting speed range of 0-100mm / min. The water tank 105... With a capacity of 500L, the water tank 105 has a built-in water filtration device. It is controlled by a liquid level sensor and a temperature sensor. When the temperature of the internal energy storage module 3 exceeds 50℃, the pump is started to deliver water to the upper spray frame 206 for circulation and cooling. The upper ends of the side moving frame 103 and the side support rod 102 are rotatably connected. When the central electric screw 104 rotates, the side moving frame 103 moves in the opposite direction along the central electric screw 104. The water tank 105 moves vertically up and down. When the water tank 105 descends to the ground, it forms multi-point support. Its bottom anti-slip texture design increases the friction coefficient to 0.8. The water tank 105 and the ground increase the moving resistance of the lower moving base 1 and increase the stability of the lower moving base 1. The water tank 105 surrounds the lower opening of the outer protective box 2, forming a fully enclosed anti-collision barrier to prevent stones and other objects from entering the outer protective box 2 and impacting the internal energy storage module 3 during movement.

[0033] An outer protective housing 2 is fixedly connected to the top of the lower movable base 1. A front through hole 201 is provided through the lower end of the outer protective housing 2. Inner support blocks 202 are horizontally slidable on both sides of the lower part of the outer protective housing 2. An outer connecting rod 203 is rotatably connected to the outer side of the inner support block 202. An outer pull rod 204 is rotatably connected to both sides of the lower part of the outer protective housing 2. A rear through hole 205 is provided through the upper part of the rear end of the outer protective housing 2. An upper spray frame 206 is slidably connected to the upper part of the outer protective housing 2. The tail end of the outer connecting rod 203 and the middle part of the outer pull rod 204 are rotatably connected. The top of the inner support block 202 is horizontally slidably connected to the top of the lower movable base 1. The outer pull rod 204 drives the inner support block 202 through the outer connecting rod 203. Moving outward, the inner protective housing 2 houses an inner energy storage module 3. Lateral positioning sliders 301 protrude from both sides of the inner energy storage module 3. External heat dissipation fins 302 are arranged in an array at intervals on both sides of the middle of the inner energy storage module 3. The inner energy storage module 3 contains a battery. The inner energy storage module 3 and the battery are bonded together with a phase change material and cooled by the external heat dissipation fins 302. When the temperature of the inner energy storage module 3 rises, cooling water from the water tank 105 is sprayed onto the surface of the external heat dissipation fins 302 via the upper spray frame 206, achieving liquid cooling and ensuring the inner energy storage module 3 remains in a reasonable and stable state, effectively reducing battery self-discharge losses caused by high temperatures. A solar panel 4 is connected to the top of the outer protective housing 2 via a hinge.

[0034] In this embodiment, the lateral positioning slider 301 and the vertical groove inside the outer protective housing 2 are slidably connected. The bottom of the lateral positioning slider 301 and the top of the inner support block 202 are in close contact. After the inner support block 202 and the lateral positioning slider 301 are separated, the inner support block 202 retracts to release the constraint on the lateral positioning slider 301, and the inner energy storage module 3 falls directly into the water tank 105 for partial immersion treatment. At the same time, the upper spray frame 206 continuously sprays water on the inner energy storage module 3 to realize emergency treatment after the inner energy storage module 3 is in an abnormal state, and to extinguish or delay the spontaneous combustion of the inner energy storage module 3 in advance, so as to facilitate waiting for the fire department to arrive.

[0035] In this embodiment, the internal energy storage module 3 is located above the water tank 105. The outer protective housing 2 is provided with an upper spray frame 206 above the external heat dissipation fins 302. The upper spray frame 206 and the water tank 105 are connected by a pump and a pipeline. The upper spray frame 206 sprays water onto the external heat dissipation fins 302 to control the temperature of the internal energy storage module 3. Utilizing the high specific heat capacity of water (4.2 kJ / kg·K), the operating temperature of the internal energy storage module 3 can be stably controlled to no more than 50°C when the ambient temperature is 35°C, which greatly reduces energy consumption compared to traditional active liquid cooling systems.

[0036] In this embodiment, the side of the solar panel 4 is rotatably connected to the telescopic rod of the telescopic cylinder 401, and the lower end of the telescopic cylinder 401 is rotatably connected to the top of the outer protective box 2. The telescopic cylinder 401 has a stroke of 200mm and can adjust the tilt angle of the solar panel 4 to 15°-60° to achieve efficient conversion of light energy. The solar panel 4 adjusts the tilt angle to the optimal light-receiving angle through the telescopic cylinder 401 and stores electrical energy in the internal energy storage module 3.

[0037] In this second embodiment, based on the first embodiment, a corrugated telescopic pipe is fixedly installed between the water storage tank 105 and the lower movable base 1. The corrugated telescopic pipe expands the water storage tank 105 and the lower movable base 1 into a water pool. During the downward movement of the water storage tank 105, the corrugated telescopic pipe is simultaneously pulled downward to further increase the water storage capacity.

[0038] The working principle of this application is as follows: The lower movable base 1 moves via movable wheels 101 and is towed by a vehicle. When the lower movable base 1 needs to move, the central electric screw 104 is driven by a motor to rotate. The thread of the central electric screw 104 drives the side movable frame 103 to move. The side movable frame 103 drives the side support rod 102 to tilt horizontally. The side support rod 102 drives the water tank 105 to move upward. The water tank 105 rises to the inside of the lower movable base 1, surrounding the lower opening of the outer protective box 2, forming a fully enclosed anti-collision barrier to prevent stones and other objects from entering the outer protective box 2 during movement and impacting the inner energy storage module 3, causing damage to the inner energy storage module 3 and the external heat sink fins 302. This provides better protection for the inner energy storage module 3. The water tank 105 is made of 8mm thick high-strength engineering plastic. With the help of sealing strips, it achieves an IP65 protection rating, which can effectively resist the impact of stones with kinetic energy ≤50J during high-speed driving. Compared with the traditional open structure, the physical protection capability of the internal energy storage module 3 is greatly improved. After the equipment arrives at the work station, the thread of the central electric screw 104 drives the side moving frame 103 to move. The side moving frame 103 drives the side support rod 102 to tilt in the vertical direction. The side support rod 102 drives the water tank 105 to move downward. The water tank 105 descends to the ground to form multi-point support. Its bottom anti-slip texture design increases the friction coefficient to 0.8. The water tank 105 and the ground increase the moving resistance of the lower moving base 1. Combined with the characteristic of the center of gravity being reduced by 15% after water storage, the stability of the lower moving base 1 is increased. The lower moving base 1 can still remain stable under a 10° slope condition. After the water tank 105 is filled with water, the overall center of gravity is further reduced, improving the overall stability.

[0039] After the equipment is moved to the charging station, the electric screw 104 is started to support the water tank 105 on the ground. The telescopic cylinder 401 is driven by the motor to extend and support the solar panel 4, moving it away from the outer protective box 2. The solar panel 4 is adjusted to the optimal tilt angle for power generation. The internal energy storage module 3 is connected to the external circuit and the charging equipment. The internal energy storage module 3 supplements the maximum charging current of the charging equipment, increasing the charging current of multiple charging piles when multiple vehicles are charging, and further improving the charging speed when multiple vehicles are charging simultaneously. This avoids the situation where the charging current is averaged out when multiple vehicles are charging, resulting in a smaller current and slower charging speed. When the temperature of the internal energy storage module 3 exceeds 50°C, the cooling water in the water tank 105 is pumped to the upper spray frame 206 by the frequency converter pump. The upper spray frame 206 sprays the external heat sink 302 with 12 sets of atomizing nozzles at a pressure of 0.3MPa. The system uses a spray system to circulate and cool the external heat dissipation fins 302. Water vapor is discharged through the rear through-hole 205 and the top of the outer protective box 2. The water inside the water tank 105 is connected to the upper spray frame 206 to spray the external heat dissipation fins 302 and control the temperature of the internal energy storage module 3. Utilizing the high specific heat capacity of water (4.2 kJ / kg·K), the operating temperature of the internal energy storage module 3 can be stably controlled within the range of 45℃±2℃ at an ambient temperature of 35℃. Compared with traditional active liquid cooling systems, energy consumption is reduced by 78%, ensuring that the internal energy storage module 3 is in a reasonable and stable state. This effectively reduces the self-discharge loss of the battery pack caused by high temperature and improves the range by 22%. At the same time, it consumes less power than liquid cooling and reduces the discharge pressure of the internal energy storage module 3. Meanwhile, the water purification module uses nanofiltration technology to control the conductivity to ≤10μS / cm, avoiding the risk of electrochemical corrosion.

[0040] The rapid energy release mechanism, composed of the outer pull rod 204 and the outer connecting rod 203, detects a thermal runaway signal in the internal energy storage module 3, such as a sudden temperature rise >80℃ or abnormal voltage fluctuation. The outer pull rod 204, through the outer connecting rod 203, drives the inner support block 202 outward. After the inner support block 202 separates from the lateral positioning slider 301, the inner support block 202 retracts, releasing the constraint on the lateral positioning slider 301. The internal energy storage module 3 then falls directly into the water tank 105 for partial immersion. Simultaneously, the upper spray frame 206 continuously sprays water onto the internal energy storage module. Block 3 sprays water to enable emergency handling in case of abnormal conditions in the internal energy storage module 3. It extinguishes or delays the spontaneous combustion of the internal energy storage module 3 in advance, reduces the flame spread rate by 90%, and reduces the affected area. The liquid inside the water tank 105 can be a 30% water-based lithium battery-specific fire extinguishing agent with a wide temperature adaptability from -20℃ to 80℃. It can suppress the thermal runaway chain reaction within 3 seconds, reduce the flame spread rate by 90%, and link with the fire protection system through the liquid level sensor to achieve unattended full-process emergency response.

[0041] The following points should be noted in this article:

[0042] 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.

[0043] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0044] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A mobile energy storage system for fast charging on highways, comprising: The lower movable base (1), outer protective box (2), inner energy storage module (3) and solar panel (4) are characterized in that the top of the lower movable base (1) is fixedly connected to the outer protective box (2), the inner energy storage module (3) is provided inside the outer protective box (2), the top of the outer protective box (2) is hinged to the solar panel (4), both sides of the lower movable base (1) are symmetrically rotatably connected to the moving wheels (101), both sides of the lower movable base (1) are symmetrically slidably connected to the side support rods (102), the lower end of the side support rods (102) is rotatably connected to the water tank (105), the middle part of the lower movable base (1) is rotatably connected to the middle electric screw (104), and both sides of the middle electric screw (104) are screwed to the side moving frame (103).

2. The mobile energy storage system for fast charging on highways according to claim 1, characterized in that, The upper ends of the side moving frame (103) and the side support rod (102) are rotatably connected. When the central electric screw (104) rotates, the side moving frame (103) moves in the opposite direction along the central electric screw (104), and the water tank (105) moves vertically up and down.

3. A mobile energy storage system for fast charging on highways according to claim 1, characterized in that, The outer protective box (2) has a front through hole (201) at the bottom of its front end. The lower two sides of the outer protective box (2) are horizontally slidable inner support blocks (202). The outer side of the inner support blocks (202) is rotatably connected to an outer connecting rod (203). The lower two sides of the outer protective box (2) are rotatably connected to an outer pull rod (204). The upper part of the tail end of the outer protective box (2) has a rear through hole (205). The upper part of the outer protective box (2) is slidably connected to an upper spray frame (206).

4. A mobile energy storage system for fast charging on highways according to claim 3, characterized in that, The tail end of the external connecting rod (203) is rotatably connected to the middle part of the external pull rod (204), and the top of the inner support block (202) is horizontally slidably connected to the top of the lower movable base (1).

5. A mobile energy storage system for fast charging on highways according to claim 4, characterized in that, The internal energy storage module (3) has lateral positioning sliders (301) protruding on both sides, and external heat dissipation fins (302) are arranged in an array at intervals on both sides of the middle part of the internal energy storage module (3).

6. A mobile energy storage system for fast charging on highways according to claim 5, characterized in that, The lateral positioning slider (301) and the vertical groove inside the outer protective box (2) are slidably connected, and the bottom of the lateral positioning slider (301) and the top of the inner support block (202) are in contact.

7. A mobile energy storage system for fast charging on highways according to claim 6, characterized in that, The internal energy storage module (3) is located above the water tank (105), and the outer protective box (2) is provided with an upper spray frame (206) above the external heat dissipation fins (302).

8. A mobile energy storage system for fast charging on highways according to claim 1, characterized in that, The side of the solar panel (4) is rotatably connected to the telescopic rod of the telescopic cylinder (401), and the lower end of the telescopic cylinder (401) is rotatably connected to the top of the outer protective box (2).

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