Mobile energy storage cabin based on semitrailer platform

Abstract

The utility model provides a mobile energy storage cabin based on a semitrailer platform, which belongs to the technical field of mobile energy storage and comprises a box body, a battery chamber is arranged in the middle of the box body, a high-voltage box is mounted at the bottom of the battery chamber, and a battery pack electrically connected with the high-voltage box is mounted above the high-voltage box. A PCS chamber is arranged at the head of the box body, an energy storage converter is arranged in the PCS chamber and electrically connected with the high-voltage box, and a confluence control and fire protection chamber is arranged between the PCS chamber and the battery chamber; a cable reel chamber is arranged on the lower side of the tail of the box body, a cable reel is arranged in the cable reel chamber, a cable on the cable reel is electrically connected with the energy storage converter, and a liquid cooling unit chamber is arranged above the cable reel chamber. The beneficial effects are that the energy storage unit is high in independence, the independent battery pack is sufficient in capacity, and bidirectional energy transmission is supported. A bidirectional reversible energy transmission channel is constructed, and the scene adaptability is excellent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mobile energy storage technical field, concretely relates to a mobile energy storage cabin based on semi-trailer platform. BACKGROUND

[0002] In the mobile energy storage technical field, the importance of the semi-trailer platform energy system is increasingly prominent. In the power emergency security scene, it can quickly respond to power grid failure, natural disasters and other emergencies, quickly transport to the disaster area, provide stable power for key facilities such as hospitals and communication base stations, and ensure the normal operation of social order. In the new energy station, it can solve the intermittency and volatility of new energy power generation, achieve power supply and demand balance through peak clipping and valley filling, help efficient grid connection of new energy, and promote optimization of energy structure. In addition, combined with the characteristics of large load and strong mobility of the semi-trailer platform, the semi-trailer platform energy system can be flexibly deployed to different locations to adapt to various energy demand scenarios, and play a key role in stable supply and reasonable allocation of energy.

[0003] The existing semi-trailer platform energy system is mainly used for power supply of the vehicle itself or local equipment, and the energy storage unit is mainly a simple hydraulic accumulator for brake energy recovery or a fuel cell system relying on hydrogen supply.

[0004] In actual application, the energy storage unit of the semi-trailer platform energy system has limited capacity, which is difficult to meet the large-scale energy storage demand. At the same time, the energy storage unit has high coupling degree with the vehicle power system, and poor independence, which makes it difficult to flexibly switch between different energy storage scenarios such as emergency power supply and power grid peak shaving, and seriously restricts the function of the energy system. UTILITY MODEL CONTENTS

[0005] The utility model provides a mobile energy storage cabin with sufficient energy storage unit capacity and high independence between the energy storage unit and the vehicle power system, and strong scene adaptability, aiming at the problem of limited capacity of the existing energy storage unit and high coupling degree between the energy storage unit and the vehicle power system, which leads to poor scene adaptability.

[0006] To solve the above problems, the utility model adopts the technical scheme, a kind of mobile energy storage cabin based on semi-trailer platform, including box, the middle part of box is provided with battery room, the bottom of battery room is installed with high pressure box, the top of high pressure box is installed with the battery pack of electrical connection with high pressure box;The head of box is provided with PCS room, and the inside of PCS room is provided with energy storage converter, and energy storage converter is electrically connected with high pressure box, and there is arranged between PCS room and battery room The confluence control and fire control room are arranged;The lower side of the tail of box is provided with cable reel room, and the inside of cable reel room is provided with cable reel, and the cable on cable reel is electrically connected with energy storage converter, and the top of cable reel room is provided with liquid cooling unit room.This energy storage cabin constructs two-way reversible energy transmission channel, scene adaptability is excellent.Charging, external power flows into energy storage converter through cable reel, converts alternating current into direct current and then is transported to high pressure box.After voltage matching and power distribution are completed by high pressure box, battery pack is charged by constant current grading.Discharging, battery pack electric energy is collected by high pressure box, direct current is converted into alternating current by energy storage converter, and then external load equipment is powered by cable reel.Moreover, the energy storage unit of the present energy storage cabin has high independence from vehicle power system, and independent battery pack capacity is sufficient, and supports two-way energy transmission.

[0007] Further, the battery packs are symmetrically distributed along the longitudinal midplane of the box. The battery packs are symmetrically distributed along the longitudinal midplane of the box, and their geometric centers are close to the center point of the semi-trailer platform. Such a layout can reduce the height of the center of mass of the whole vehicle in the transportation state, effectively reducing the risk of vehicle roll compared with the conventional layout.

[0008] Further, the liquid cooling unit room is provided with a liquid cooling unit and a liquid cooling water tank connected by a pipeline, and the liquid cooling unit is connected to the cooling plates around the battery pack through a circulating pipeline. Inside the liquid cooling unit room, the liquid cooling unit is connected to the liquid cooling water tank through a pipeline. At the same time, the liquid cooling unit is connected to the cooling plates around the battery pack through a circulating pipeline. When operating, the liquid cooling unit drives the cooling medium to circulate in the closed pipeline, and absorbs the Joule heat and reaction heat generated during charging and discharging of the battery pack. Then, the heat-carrying cooling medium is pumped to the liquid cooling water tank to dissipate heat through forced convection.

[0009] Further, an AC / DC module is installed above the energy storage converter, and the AC / DC module is electrically connected to the liquid cooling unit. In the energy storage system, an AC / DC module is installed above the energy storage converter to achieve reasonable layout and efficient cooperation between devices. The module is electrically connected to the vehicle-mounted liquid cooling unit of the liquid cooling unit room. Its core function is to convert alternating current into direct current and provide it to the liquid cooling unit to meet the working requirements of the liquid cooling unit and ensure stable operation of the system.

[0010] Further, the side wall of the PCS chamber is provided with a heat dissipation fan. The side wall of the PCS chamber is provided with a heat dissipation fan which works in a negative pressure drainage mode. During operation, the heat generated by the power electronic device can be quickly discharged outside the cabin to maintain a suitable temperature environment in the PCS chamber and ensure stable operation of the power electronic device.

[0011] Further, the inside of the current collection control and fire control chamber is provided with a current collection control cabinet which is electrically connected with the battery pack. The current collection control cabinet collects the state data of the battery pack in real time and performs two tasks. One is SOC balancing. SOC refers to the state of charge, which reflects the proportion of the remaining battery capacity to the rated capacity. Due to the differences in characteristics of each single battery in the battery pack, the SOC may be inconsistent during use. The current collection control cabinet uses technical means to make the SOC of each single battery consistent to prevent overcharging and overdischarging and prolong the service life of the battery. The other is insulation detection, which detects the insulation resistance between the live part and the grounded part of the battery pack to ensure good insulation performance, avoid safety accidents caused by electric leakage, and ensure personnel and equipment safety.

[0012] Further, the side wall of the current collection control and fire control chamber is provided with a fire control panel which is electrically connected with the current collection control cabinet. The inside of the current collection control and fire control chamber is provided with a fire gas cylinder which is electrically connected with the fire control panel through a fire host. The side wall of the current collection control and fire control chamber is also provided with a fire water inlet. After receiving the information collected by the current collection control cabinet, the fire gas cylinder can be precisely controlled through the control panel to quickly release the fire extinguishing agent for fire extinguishing operation. In addition, if the water-based fire extinguishing system needs to be started, the fire water pipe can be connected to the fire water inlet to enhance the fire extinguishing efficiency using external water source to ensure that the energy storage cabin can be effectively rescued in time when a fire occurs.

[0013] Further, shock absorbers are installed in the battery chamber, the current collection control and fire control chamber, and the PCS chamber. The installation of shock absorbers in the battery chamber, the current collection control and fire control chamber, and the PCS chamber can protect the equipment, reduce mechanical damage and connection loosening caused by vibration, and prolong the service life of the equipment. It can also improve the stability of the system, ensure the stability of the electrical performance, and reduce the risk of equipment malfunction. It can also improve safety and ensure that fire fighting equipment and the like can also operate normally in a vibrating environment, reducing safety hazards.

[0014] Further, corner fixed supports are fixed at the bottom corners of the box body. The corner fixed supports are fixed at the bottom corners of the box body and are locked with the platform corner pieces of the semitrailer by high-strength bolts to form a rigid shear connection. This structure effectively enhances the stability between the two and ensures transportation safety.

[0015] Further, the bottom surface of the box is fixed with the beam base on both sides of the edge. The beam base is fixed on both sides of the edge of the bottom surface of the box, and the beam base supports the box through the plane contact support mode, so that the box is horizontally calibrated, and deformation of the box due to uneven stress of partial suspension is prevented.

[0016] It can be seen from the above technical solutions that the utility model has the advantages that during charging, external power flows into the energy storage converter through the cable reel, and after converting alternating current into direct current, the direct current is delivered to the high-voltage box. The high-voltage box completes voltage matching and power distribution, and performs graded constant current charging on the battery pack. During discharging, the electric energy of the battery pack is collected through the high-voltage box, and the energy storage converter is used to convert direct current into alternating current, and then the cable reel is used to supply power to external load equipment. In summary, the energy storage unit of the utility model and the vehicle power system are highly independent, the capacity of the independent battery pack is sufficient, and bidirectional energy transmission is supported. Meanwhile, a bidirectional reversible energy transmission channel is constructed, and the scene adaptability is excellent. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the utility model, the drawings needed to be used in the description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0018] Figure 1 It is a structural schematic view of the embodiment of the utility model.

[0019] Figure 2 It is a front view of the embodiment of the utility model.

[0020] Figure 3 It is a rear view of the embodiment of the utility model.

[0021] Figure 4 It is a bottom view of the embodiment of the utility model.

[0022] Figure 5 It is a left view of the embodiment of the utility model.

[0023] Figure 6 It is Figure 2 It is a sectional view of A-A.

[0024] Figure 7 It is Figure 5 It is a sectional view of B-B.

[0025] In the figure: 1. Cable reel room, 2. Liquid cooling unit room, 3. Explosion vent, 4. Battery room, 5. Confluence control and fire control room, 6. PCS room, 7. Explosion-proof air inlet louver, 8. Control cabinet operation screen, 9. Air outlet, 10. Fire water inlet, 11. Grounding point, 12. Corner fixed support, 13. Explosion-proof fan, 14. Radiating fan, 15. Fire control control panel, 16. Beam base, 17. Liquid cooling unit, 18. Liquid cooling water tank, 19. Battery pack, 20. Fire control host, 21. Fire control gas cylinder, 22. Confluence control cabinet, 23. Energy storage converter, 24. AC / DC module, 25. Shock absorber, 26. High-voltage box, 27. Cable reel. DETAILED DESCRIPTION

[0026] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the patent, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the patent.

[0027] A mobile energy storage cabin based on a semi-trailer platform, as shown in Figure 1 , comprises a box body, the box body is transformed from a standard container and is fixed stably on the semi-trailer platform. The inside of the box body contains multiple functional rooms, which are a battery room 4, a PCS room 6, a confluence control and fire control room 5, a cable reel room 1 and a liquid cooling unit room 2, and the functional rooms are isolated by fireproof partitions. Among them, the battery room 4 is located in the middle part of the box body and is the core energy storage area of the energy storage cabin; the PCS room 6 is located at the head of the box body, and the PCS in the PCS room 6 is the full name of Power Conversion System, that is, power conversion system. The PCS room 6 is mainly used for installing and placing power conversion related equipment and devices, and is responsible for key operations such as converting electric energy; the confluence control and fire control room 5 is between the battery room 4 and the PCS room 6, and undertakes important responsibilities such as collecting battery state data, controlling confluence and fire protection; the cable reel room 1 is arranged at the lower side of the tail of the box body and is used for storing and managing cables; as shown in Figure 5 , the liquid cooling unit room 2 is above the cable reel room 1, and the two are in a stacked layout distributed in an upper and lower manner. The liquid cooling unit room 2 mainly takes away the heat generated by the battery pack 19 during work through circulating cooling medium, so as to ensure the stable operation of the battery room 4.

[0028] As shown in Figure 4As shown, in the present embodiment, corner fixing supports 12 are welded at the bottom corners of the box body, and the corner fixing supports 12 are locked with the platform corner fittings of the semitrailer through high-strength bolts, thereby forming a rigid shear connection. At the same time, beam body bases 16 are welded at the two side edges of the bottom surface of the box body. The beam body bases 16 are six in total and are evenly distributed on both sides of the box body, i.e., three beam body bases 16 on each side. Moreover, the beam body bases 16 on each side are distributed at equal intervals along the length direction of the box body. The protruding height of the beam body bases 16 matches the surface of the platform of the semitrailer, and the beam body bases 16 can assist in supporting the box body and realize horizontal calibration of the box body through this supporting effect, thereby avoiding deformation of the box body due to partial suspension. In addition, grounding points 11 are arranged at the bottom of both sides of the box body. The staff can observe the state of the grounding points 11 to assist in completing the leveling operation of the box body and ensure that the box body is in a horizontal state.

[0029] As shown, Figure 7 In the present embodiment, a battery rack is arranged inside the battery chamber 4. The bottom surface of the battery rack is connected to the bottom of the battery chamber 4 through shock absorbers 25, and the side surface of the battery rack is also connected to the side wall of the battery chamber 4 through shock absorbers 25. The shock absorbers 25 used here are rubber-metal composite structures, which can effectively absorb the vibration energy generated during transportation. On the upper layer of the battery rack, a plurality of battery packs 19 are installed. These battery packs 19 are arranged in a matrix and collectively form a battery cluster. At the same time, these battery packs 19 are symmetrically distributed along the longitudinal midplane of the box body, and their geometric centers are close to the center point of the platform of the semitrailer, which can reduce the height of the center of mass of the whole vehicle in the transportation state. On the lower layer of the battery rack, a high-voltage box 26 is installed, which has an electrical connection relationship with the battery packs 19 above, and the high-voltage box 26 integrates a fuse and a contactor. With this configuration, the high-voltage box 26 can perform segmented charge and discharge control operation on the battery cluster composed of a plurality of battery packs 19.

[0030] As shown, Figure 2 , 3As shown, the lower part of one side wall of the battery chamber 4 is provided with an explosion-proof air inlet shutter 7, and the upper part of the side wall is provided with an explosion vent 3; the upper part of the other side wall of the battery chamber 4 is provided with an explosion-proof fan 13. When the CO concentration, smoke concentration or temperature in the battery chamber 4 exceeds the standard, the explosion-proof fan 13 is automatically started. At this time, the explosion-proof fan 13 forms a negative pressure in the battery chamber 4 by operation, and the external air enters the battery chamber 4 from the explosion-proof air inlet shutter 7. The air entering the chamber will take away CO and smoke, and assist in reducing the indoor temperature. Then the hot air mixed with CO and smoke is discharged from the explosion-proof fan 13, thereby reducing the concentration of CO and smoke in the battery chamber 4 and assisting in cooling. When an explosion occurs in the battery chamber 4 by accident, the shock wave generated by the explosion will be discharged from the explosion vent 3, and the explosion vent 3 can release the explosion energy, thereby reducing the harm of the explosion to the battery chamber 4 and the surrounding environment.

[0031] In the specific embodiment, the inside of the PCS chamber 6 is provided with a support frame, the bottom surface of the support frame is connected to the bottom of the PCS chamber 6 through a shock absorber 25, and the side surface of the support frame is also connected to the side wall of the PCS chamber 6 through a shock absorber 25. The shock absorber 25 used here is a rubber-metal composite structure, which can effectively absorb the vibration energy generated during transportation. The support frame is installed with energy storage converters 23, and there are four energy storage converters 23, which are stacked and fixed on the support frame from high to low. At the same time, the energy storage converters 23 are electrically connected with a high-voltage box 26, and the main function is to realize AC-DC conversion. Above the energy storage converters 23, there are AC / DC modules 24, which are AC-DC power conversion modules, and are electronic devices that can convert an AC voltage into a DC voltage. There are two AC / DC modules 24, and the function of the two AC / DC modules 24 is to realize AC-DC voltage conversion, so as to meet the energy required for the work of the liquid cooling unit chamber 2.

[0032] A heat dissipation fan 14 is installed on one side wall of the PCS chamber 6, and an air outlet 9 is arranged on the other side wall. The heat dissipation fan 14 works in a negative pressure drainage mode, and forms a negative pressure environment in the PCS chamber 6 by operation, so as to suck the external cold air into the PCS chamber 6. The cold air entering the PCS chamber 6 will be air-cooled to the energy storage converters 23, and after absorbing the heat generated by the energy storage converters 23, hot air is formed, which will then be discharged from the air outlet 9 of the PCS chamber 6.

[0033] In the specific embodiment, the inside of the current collection control and fire control room 5 is provided with a current collection control cabinet 22, the bottom surface of the current collection control cabinet 22 is connected to the bottom of the current collection control and fire control room 5 through a shock absorber 25, and the side surface of the current collection control cabinet 22 is also connected to the side wall of the current collection control and fire control room 5 through a shock absorber 25. The shock absorber 25 used here is a rubber-metal composite structure, which can effectively absorb the vibration energy generated during transportation. At the same time, the current collection control cabinet 22 is electrically connected to the battery cluster composed of a plurality of battery packs 19 through an energy storage converter 23. The current collection control cabinet 22 can collect the state data of the battery cluster in real time and perform SOC balancing and insulation detection. Among them, SOC balancing refers to the current collection control cabinet 22 using corresponding control means to make the state of charge of all battery packs 19 in the battery cluster tend to be balanced, that is, to keep the percentage of the remaining power of each battery pack 19 consistent; insulation detection refers to the current collection control cabinet 22 detecting the insulation resistance between the live part and the grounded part of the battery pack 19, so as to ensure that the insulation performance of the battery pack 19 is good.

[0034] A control cabinet operation screen 8 is arranged on one of the outer side walls of the current collection control and fire control room 5. The worker can control the charging and discharging operation of the battery pack 19 by operating the control cabinet operation screen 8. A fire control panel 15 is arranged on the other outer side wall of the current collection control and fire control room 5, and the fire control panel 15 is electrically connected to the current collection control cabinet 22. A fire control host 20 is arranged inside the current collection control and fire control room 5, the fire control gas cylinder 21 is connected to the fire control host 20, and the fire control gas cylinder 21 is electrically connected to the fire control panel 15 through the fire control host 20. In addition, a fire water inlet 10 is also arranged on the side wall of the current collection control and fire control room 5. If it is necessary to start the water-based fire extinguishing system, the worker can connect the fire water pipe to the fire water inlet 10, so as to use the external water source to enhance the fire extinguishing efficiency.

[0035] In the specific embodiment, a winding and unwinding motor is fixed inside the cable reel room 1, and the winding and unwinding motor is connected to the cable reel 27. The current collection control cabinet 22 can control and drive the winding and unwinding motor, and the winding and unwinding motor drives the cable reel 27 to rotate under the control of the current collection control cabinet 22, so as to realize automatic winding management of the cable. A waterproof plug is arranged at one end of the cable, so that the external power input and power output can be quickly plugged. The other end of the cable is connected to the energy storage converter 23.

[0036] As Figure 6As shown, in the present embodiment, the inside of the liquid cooling unit room 2 is provided with liquid cooling units 17 and liquid cooling water tanks 18, which are connected by pipelines. The liquid cooling units 17 are electrically connected with the AC / DC module 24, and the AC / DC module 24 provides the liquid cooling units 17 with the energy required for operation. The liquid cooling units 17 and the liquid cooling water tanks 18 are both provided with two groups. Among them, the two groups of liquid cooling units 17 are fixed on the bottom of the liquid cooling unit room 2, and the two groups of liquid cooling units 17 are symmetrically distributed along the longitudinal axis of the tank; the two groups of liquid cooling water tanks 18 are fixed on the side wall of the liquid cooling unit room 2, and the two groups of liquid cooling water tanks 18 are also symmetrically distributed along the longitudinal axis of the tank. In addition, the liquid cooling units 17 are connected with the cooling plates around the battery pack 19 through a circulating pipeline. During operation, the liquid cooling units 17 drive the cooling medium to circulate in the closed pipeline, so that the cooling medium directionally absorbs the Joule heat and reaction heat generated by the battery pack 19 during charging and discharging. Then, the cooling medium carrying heat is pumped to the liquid cooling water tank 18, and heat dissipation is realized by forced convection in the liquid cooling water tank 18.

[0037] The specific use process of the utility model is:

[0038] The charging and discharging process: in the charging stage, the external power source is connected to the energy storage converter 23 through the cable on the cable reel 27. The energy storage converter 23 converts the input alternating current into direct current, and then the current passes through the high-voltage box 26. The high-voltage box 26 matches the voltage and distributes the power of the direct current, and then performs a hierarchical constant current charging operation on the battery pack 19. In the discharging stage, the electrical energy stored in the battery pack 19 is first collected and output by the high-voltage box 26. The output direct current enters the energy storage converter 23, and the energy storage converter 23 completes the power conversion from direct current to alternating current. Finally, the converted alternating current is supplied to the external load device through the cable on the cable reel 27. In this way, a bidirectional reversible energy transmission channel is formed, realizing flexible storage and release of electrical energy.

[0039] The heat dissipation process: the AC / DC module 24 provides the liquid cooling units 17 with the electrical energy required for operation. After the liquid cooling units 17 are started, the cooling medium is driven to circulate in the closed pipeline system. During the charging and discharging process of the battery, the battery generates Joule heat and reaction heat, and the circulating cooling medium directionally absorbs these heat. After absorbing heat, the cooling medium carrying heat is pumped to the liquid cooling water tank 18, and heat dissipation is realized by forced convection in the liquid cooling water tank 18. At the same time, the heat dissipation fan 14 adopts a negative pressure drainage working mode to quickly discharge the heat generated by the power electronic devices outside the cabin. In this way, a composite heat exchanger mechanism dominated by liquid cooling and assisted by air cooling is formed, ensuring that the battery and related equipment operate in a suitable temperature environment.

[0040] The fire emergency process: the fire emergency adopts a three-level response mechanism to deal with different degrees of safety hazards.

[0041] (1) First warning: When the air sample composition is detected to be abnormal, the confluence control cabinet 22 will automatically increase the sampling frequency and record the relevant data in detail, so as to analyze and warn the possible problems.

[0042] (2) Second warning: Once the CO concentration, smoke concentration or temperature exceeds the safety standard, the system will immediately start the explosion-proof fan 13 to accelerate air circulation and reduce the concentration of harmful gases. At the same time, the power supply in the cabin is cut off to prevent electrical faults from causing more serious accidents, and an alarm is sent to remind the staff to take timely measures.

[0043] (3) Third warning: When a fire occurs, the fire-fighting system responds quickly. The fire-fighting cylinder 21 sprays fire extinguishing agent, and at the same time, it is linked with the water-based fire extinguishing system to accurately cover the fire source, quickly and effectively put out the fire, and minimize the loss and harm.

[0044] As can be seen from the above implementation mode, the beneficial effects of the utility model are that when charging, external power flows into the energy storage converter through the cable reel, converts alternating current into direct current, and then delivers it to the high-voltage box. The high-voltage box completes voltage matching and power distribution, and performs graded constant current charging on the battery pack. When discharging, the battery pack electric energy is collected by the high-voltage box, converted from direct current to alternating current by the energy storage converter, and then supplied to the external load equipment through the cable reel. In summary, the energy storage unit of the present energy storage cabin has high independence from the vehicle power system, sufficient capacity of independent battery pack, and supports bidirectional energy transmission. At the same time, a bidirectional reversible energy transmission channel is constructed, and the scene adaptability is excellent.

[0045] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mobile energy storage pod based on a semi-trailer platform comprising a box, characterized in that, The middle part of the box is provided with a battery chamber (4), and the bottom of the battery chamber (4) is provided with a high-voltage box (26), and the upper part of the high-voltage box (26) is provided with a battery pack (19) electrically connected with the high-voltage box (26); the head part of the box is provided with a PCS chamber (6), and the inside of the PCS chamber (6) is provided with an energy storage converter (23) electrically connected with the high-voltage box (26), and the PCS chamber (6) is provided with a current confluence control and fire-fighting chamber (5) between the battery chamber (4); the lower side of the tail part of the box is provided with a cable reel chamber (1), and the inside of the cable reel chamber (1) is provided with a cable reel (27), and the cable on the cable reel (27) is electrically connected with the energy storage converter (23), and the upper part of the cable reel chamber (1) is provided with a liquid cooling unit chamber (2).

2. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The battery pack (19) is symmetrically distributed along the longitudinal midplane of the box.

3. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The inside of the liquid cooling unit chamber (2) is provided with a liquid cooling unit (17) and a liquid cooling water tank (18) connected through a pipeline, and the liquid cooling unit (17) is connected with the cooling plate around the battery pack (19) through a circulating pipeline.

4. The mobile energy storage pod based on a semi-trailer platform of claim 3, wherein, The upper part of the energy storage converter (23) is provided with an AC / DC module (24), and the AC / DC module (24) is electrically connected with the liquid cooling unit (17).

5. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The side wall of the PCS chamber (6) is provided with a cooling fan (14).

6. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The inside of the current confluence control and fire-fighting chamber (5) is provided with a current confluence control cabinet (22), and the current confluence control cabinet (22) is electrically connected with the battery pack (19).

7. The mobile energy storage pod based on a semi-trailer platform of claim 6, wherein, The side wall of the current confluence control and fire-fighting chamber (5) is provided with a fire-fighting control panel (15), and the fire-fighting control panel (15) is electrically connected with the current confluence control cabinet (22), the inside of the current confluence control and fire-fighting chamber (5) is provided with a fire-fighting gas cylinder (21), the fire-fighting gas cylinder (21) is electrically connected with the fire-fighting control panel (15) through a fire-fighting host (20), and the side wall of the current confluence control and fire-fighting chamber (5) is further provided with a fire-fighting water inlet (10).

8. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The inside of the battery chamber (4), the current confluence control and fire-fighting chamber (5) and the PCS chamber (6) is provided with a shock absorber (25).

9. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The bottom corner of the box is fixedly provided with an angle fixing support (12).

10. The mobile energy storage pod based on a semi-trailer platform of claim 1, wherein, The bottom surface of the box is fixedly provided with a beam body base (16).

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