Mobile storage and charging all-in-one machine and application method

Abstract

The invention relates to a mobile storage and charging all-in-one machine and an application method, the mobile storage and charging all-in-one machine comprises a storage and charging machine and a mobile station, the storage and charging machine is internally provided with an energy storage bin, an AC power distribution bin, a DC power distribution bin and an energy management system, and the energy storage bin is internally provided with a liquid-cooled battery pack; a PCS and an alternating current conversion device are arranged in the alternating current distribution bin, a power conversion unit and a direct current conversion device are arranged in the direct current distribution bin, a charging device is arranged on the outer wall of the direct current distribution bin, and the storage and charging machine is detachably installed on the moving table. The energy management system is in signal connection with the liquid-cooled battery pack, the PCS, the power conversion unit, the direct-current conversion equipment and the mobile station; the charging device outputs direct current outwards or receives an external direct current power supply to charge the liquid-cooled battery pack, and the alternating current conversion device outputs alternating current outwards or receives an external alternating current power supply to charge the liquid-cooled battery pack. The invention aims to provide the mobile storage and charging all-in-one machine which is low in cost, wide in application range, sufficient in electric energy, high in maneuverability, intelligent and capable of being remotely regulated and controlled and the application method.

Description

Technical Field

[0001] This invention relates to a storage and charging machine, and more particularly to a mobile integrated storage and charging machine and its application method. Background Technology

[0002] With the rapid increase in the number of new energy vehicles in my country, the construction of charging piles has been included in the "new infrastructure" field, and the industry has ushered in a new period of development. As of the end of June 2024, the number of new energy vehicles in China reached 24.72 million, with a penetration rate of 35.2% for the whole year. Electric vehicles accounted for 73.36% of the total number of new energy vehicles. In the first half of 2024, 4.397 million new energy vehicles were added nationwide, a year-on-year increase of 39.41%. The significant increase in the penetration rate and number of new energy vehicles has driven strong demand in the charging pile market.

[0003] Currently, the number of installed charging piles is far from meeting market demand, highlighting the imbalance between the number of charging piles and the number of new energy vehicles. The Ministry of Industry and Information Technology and other departments issued a "Notice on Organizing and Carrying Out Pilot Work for the Comprehensive Electrification of Public Sector Vehicles," proposing that the ratio of newly added public charging piles to new energy vehicles in the public sector should strive to reach 1:1. However, as of the first half of 2024, the total number of public charging piles exceeded 2.3 million, including 963,000 DC charging piles and 1.307 million AC charging piles, resulting in a public vehicle-to-charging-pile ratio of only 6:1.

[0004] The growth in the number and coverage of charging stations is not keeping pace with the growth rate of new energy vehicles. Furthermore, the complex electrochemical working principle of batteries makes them susceptible to factors such as temperature and internal resistance. Battery systems are further complex, consisting of individual cells connected electrically. Current BMS technology cannot accurately estimate the SOC (State of Charge) of electric vehicle batteries. If an electric vehicle experiences circuit failures or insufficient power in extreme weather conditions such as cold or strong winds, it could threaten the driver's safety.

[0005] As the number of new energy vehicles increases, there will be more and more instances of insufficient power or even breakdowns due to sudden drops in battery charge, especially in winter, on congested highways during holidays, and in remote areas without charging facilities. The usual way to deal with such situations is to call for tow truck assistance or emergency charging. However, tow truck assistance is expensive and time-consuming, which urgently requires a portable charging device. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a mobile integrated energy storage and charging machine and its application method that is low in cost, versatile, has abundant power, high mobility, intelligent and remotely controllable.

[0007] The present invention provides a mobile integrated energy storage and charging machine, comprising an energy storage and charging unit and a mobile platform. The energy storage and charging unit is provided with an energy storage compartment, an AC power distribution compartment, a DC power distribution compartment and an energy management system. The energy storage compartment is provided with a liquid-cooled battery pack.

[0008] The AC power distribution compartment is equipped with a PCS and an AC conversion device. The PCS is electrically connected to the liquid-cooled battery pack and the AC conversion device, respectively. The AC conversion device is signal-connected to the energy management system.

[0009] The DC power distribution compartment is equipped with a power conversion unit and a DC-DC converter. A charging device is installed on the outer wall of the DC power distribution compartment. The power conversion unit is electrically connected to the liquid-cooled battery pack, the DC-DC converter is electrically connected to the power conversion unit, and the charging device is electrically connected to the power conversion unit. The energy storage and charging machine is detachably mounted on a mobile platform, and the mobile platform is electrically connected to the DC-DC converter.

[0010] The energy management system is connected to the liquid-cooled battery pack, PCS, power conversion unit, DC-DC converter and mobile station respectively.

[0011] The charging device outputs DC power or receives external DC power to charge the liquid-cooled battery pack, and the AC conversion device outputs AC power or receives external AC power to charge the liquid-cooled battery pack.

[0012] The present invention provides a mobile integrated energy storage and charging unit, wherein the energy storage compartment is further provided with a high-voltage box and a protection switch, the protection switch is electrically connected to the liquid-cooled battery pack, the high-voltage box is electrically connected to the protection switch, and the power conversion unit and the PCS are both electrically connected to the high-voltage box.

[0013] The present invention provides a mobile integrated storage and charging unit, wherein the AC conversion device includes a conversion switch that can output AC power or receive external AC power to charge a liquid-cooled battery pack; the storage and charging unit is also provided with a liquid cooling section, which includes a liquid cooling unit and a liquid cooling pipe sealed to it.

[0014] The liquid cooling unit is installed in the AC power distribution compartment. The liquid cooling pipe is sealed to the liquid cooling battery pack. The transfer switch is electrically connected to the PCS and the liquid cooling unit respectively. The energy management system is signal connected to the transfer switch.

[0015] The present invention provides a mobile integrated energy storage and charging device, wherein the AC conversion device further includes a switching power supply, the switching power supply is electrically connected to a conversion switch, and the energy management system is electrically connected to the switching power supply.

[0016] The present invention provides a mobile integrated storage and charging machine, wherein the AC power distribution compartment is further equipped with a UPS, an AC circuit breaker, a current transformer, a meter, and a surge protector.

[0017] The UPS is connected between the transfer switch and the switching power supply, and is also connected to the energy management system. The AC circuit breaker and the current transformer are both electrically connected to the PCS. A branch copper busbar is electrically connected to the AC circuit breaker, and the branch copper busbar is electrically connected to the surge protector. The meter is electrically connected to the current transformer and the branch copper busbar respectively.

[0018] The present invention provides a mobile integrated storage and charging machine, wherein the DC power distribution compartment includes a primary compartment, a secondary compartment and a tertiary compartment; the charging device includes a charging gun capable of outputting DC power, a bracket, a support column and a DC charging socket capable of connecting to an external DC power source to charge a liquid-cooled battery pack.

[0019] The primary compartment is equipped with a DC wiring box that is electrically connected to the power conversion unit. The power conversion unit is arranged in the secondary compartment, and the DC conversion equipment is arranged in the tertiary compartment. The DC wiring box is electrically connected to the DC conversion equipment, the charging gun, and the DC charging socket, respectively. The bracket and support column are fixedly installed on the outer wall of the DC power distribution compartment.

[0020] This invention discloses a mobile integrated energy storage and charging unit, wherein the energy storage and charging unit is further provided with a front door, a rear door, a hanging lug, and a floor drain; the hanging lug is provided on the top of the energy storage and charging unit; the floor drain is provided on the bottom of the energy storage and charging unit; a fan electrically connected to a changeover switch is provided on the rear door; a charging card reader module electrically connected to a switching power supply and a dehumidifier electrically connected to the changeover switch are provided on the front door; the fan, dehumidifier, and charging card reader module are all connected to the energy management system via signal.

[0021] This invention discloses a mobile integrated energy storage and charging unit, which further includes a fire protection section. The fire protection section comprises a fire control panel, a fire-fighting gas cylinder, a detector, and an audible and visual alarm. The fire control panel is electrically connected to a UPS and signal-connected to an energy management system. The fire-fighting gas cylinder and the audible and visual alarm are both electrically and signal-connected to the fire control panel. The detector is signal-connected to the fire control panel. The fire-fighting gas cylinder is located inside the energy storage compartment, and the detector is located inside the DC power distribution compartment. The fire control panel and the audible and visual alarm are both located on the front door.

[0022] This invention discloses a mobile integrated energy storage and charging unit, wherein the mobile platform is provided with a control box, a motor, wheels, fixing pins, and a limiting groove; the bottom of the energy storage and charging unit is provided with a base, and the base is provided with fixing holes adapted to the fixing pins; the energy storage and charging unit is detachably installed in the limiting groove of the mobile platform through the base and fixed to the mobile platform by fixing pins inserted into the fixing holes; the control box is electrically connected to the motor and the DC-DC converter respectively; and the energy management system is signal connected to the control box.

[0023] A method for applying a mobile storage and charging integrated machine, characterized by the following steps:

[0024] The energy management system sends a movement command to the control box of the mobile station. The control box drives the motor to move the wheels. After the energy storage and charging unit moves to the target position, it replenishes energy or supplies power to the outside.

[0025] An external DC power supply is connected through a DC charging socket, flows into the power conversion unit through a DC wiring box, and the power conversion unit converts the DC power into an appropriate voltage, which then charges the liquid-cooled battery pack through a high-voltage box and a protection switch.

[0026] External AC power is connected through a transfer switch. The PCS rectifies the AC power into DC power, which is then used to charge the liquid-cooled battery pack via the high-voltage box and protection switch.

[0027] After the charging card reader is swiped, the energy management system controls the power conversion unit to convert the DC power of the liquid-cooled battery pack into an appropriate voltage, which is then transmitted to the charging gun through the DC wiring box to charge the electric vehicle.

[0028] The energy management system sends commands to the PCS and the transfer switch. The PCS inverts the DC power of the liquid-cooled battery pack into AC power, which is then output to the outside via the transfer switch or branch copper busbar.

[0029] The UPS monitors power supply stability in real time. If AC power is interrupted, it immediately supplies power to the liquid-cooled unit, fire alarm control panel, fan, dehumidifier, and energy management system.

[0030] This invention differs from existing technologies in that it combines a mobile station with a charging and storage unit to form a mobile integrated charging and storage device applicable to multiple scenarios. The device contains multiple compartments. The liquid-cooled battery pack in the energy storage compartment is used for energy storage and external power supply. The PCS in the AC power distribution compartment inverts the DC power from the liquid-cooled battery pack into AC power. This AC power is output as 220V / 380V AC power via an AC circuit breaker. Simultaneously, a conversion switch provides operating voltage to the components within the compartment and outputs 220V AC power externally. It can also be connected to an external 220V AC power source for AC charging of the liquid-cooled battery pack. The power conversion unit in the DC power distribution compartment converts the DC power from the liquid-cooled battery pack into DC power compatible with electric vehicle charging voltages. This power is used to charge electric vehicles via a charging gun and can also be connected to an external DC power source via a DC charging socket for DC charging of the liquid-cooled battery pack. An energy management system is connected to the liquid-cooled battery pack, PCS, power conversion unit, and mobile station to monitor the mobile integrated charging and storage device in real time and make corresponding adjustments.

[0031] The mobile storage and charging integrated machine and its application method of the present invention have at least the following beneficial effects:

[0032] (1) The mobile charging and storage unit of the present invention has the advantages of multi-scenario use and dual charging modes. It can be used as a mobile DC charging pile to charge electric vehicles, and can also provide AC power for industrial and commercial parks to achieve revenue by peak shaving and valley filling. When charging, it supports both DC and AC modes to meet the needs of different scenarios.

[0033] (2) When this mobile energy storage unit is in operation, it can be loaded onto a light truck for long-distance transportation or installed on a mobile platform for short-distance movement. It not only has low manufacturing cost and lower production threshold, but also has strong flexibility and is more convenient to use, and has significant application and promotion value.

[0034] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a mobile storage and charging integrated machine according to the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of the energy storage and charging machine in this invention;

[0037] Figure 3 This is a schematic diagram of the structure of the energy storage and charging machine from the front side in this invention. Figure 1 ;

[0038] Figure 4 In this invention Figure 3 Enlarged view of a portion at point A;

[0039] Figure 5 This is a schematic diagram of the structure of the energy storage and charging machine from the front side in this invention. Figure 2 ;

[0040] Figure 6 This is a structural schematic diagram of the energy storage and charging machine in this invention from a downward viewing angle;

[0041] Figure 7 This is a schematic diagram of the structure of the energy storage and charging machine from the rear side in this invention;

[0042] Figure 8 This is a schematic diagram of the structure of the mobile station in this invention. Figure 1 ;

[0043] Figure 9 This is a schematic diagram of the structure of the mobile station in this invention. Figure 2 ;

[0044] Figure 10 This is an electrical connection block diagram of a mobile storage and charging integrated machine according to the present invention.

[0045] Figure label:

[0046] 01-Storage and charging unit; 11-Energy storage compartment; 111-Liquid-cooled battery pack; 112-High voltage box; 113-Protective switch; 12-DC distribution compartment; 121-Primary compartment; 122-DC wiring box; 123-Secondary compartment; 124-Power conversion unit; 125-Celectrode compartment; 126-DC conversion equipment; 127-Secondary equipment installation area; 128-Side door; 129-Charging device; 1291-Charging gun; 1292-DC charging socket; 1293-Bracket; 1294-Support column; 13-AC distribution compartment; 131-PCS; 132-AC conversion device; 1321-Changeover switch; 1322-Switching power supply; 133-UPS; 134-AC circuit breaker; 135-Branch copper busbar; 136-Current transformer ; 137-Surge protector; 138-Meter; 14-Energy management system; 141-Antenna; 15-Liquid cooling unit; 151-Liquid cooling unit; 152-Liquid cooling pipe; 16-Front door; 161-Charging card reader module; 162-Dehumidifier; 163-Indicator light; 164-Louvre; 165-Energy storage emergency stop; 166-Charging emergency stop; 17-Rear door; 171-Fan; 172-Water fire extinguishing interface; 18-Lifting lug; 19-Floor drain; 20-Fire department; 201-Fire gas cylinder; 202-Fire control panel; 203-Audible and visual alarm; 204-Detector; 21-Base support; 211-Fixing hole; 02-Mobile platform; 22-Control box; 23-Motor; 24-Wheel; 25-Fixing pin; 26-Limit groove; 27-Steering gear. Detailed Implementation

[0047] like Figure 1 , 2 As shown in Figures 3 and 10, the present invention provides a mobile integrated energy storage and charging unit, including an energy storage and charging unit 01 and a mobile platform 02. The energy storage and charging unit 01 is provided with an energy storage compartment 11, an AC power distribution compartment 13, a DC power distribution compartment 12 and an energy management system 14. The energy storage compartment 11 is provided with a liquid-cooled battery pack 111.

[0048] The AC power distribution compartment 13 is equipped with a PCS131 and an AC converter 132. The PCS131 is electrically connected to the liquid-cooled battery pack 111 and the AC converter 132 respectively. The AC converter 132 is signal-connected to the energy management system 14.

[0049] The DC power distribution compartment 12 is equipped with a power conversion unit 124 and a DC-DC converter 126. A charging device 129 is installed on the outer wall of the DC power distribution compartment 12. The power conversion unit 124 is electrically connected to the liquid-cooled battery pack 111, the DC-DC converter 126 is electrically connected to the power conversion unit 124, and the charging device 129 is electrically connected to the power conversion unit 124. The energy storage and charging unit 01 is detachably installed on the mobile platform 02, and the mobile platform 02 is electrically connected to the DC-DC converter 126.

[0050] The energy management system 14 is connected to the liquid-cooled battery pack 111, PCS 131, power conversion unit 124, DC-DC converter 126 and mobile station 02 respectively.

[0051] The liquid-cooled battery pack 111 is charged by outputting DC power or receiving external DC power through the charging device 129, and by outputting AC power or receiving external AC power through the AC converter 132.

[0052] The mobile charging and storage unit of this invention has the advantages of multi-scenario use and dual charging modes: it can be used as a mobile DC charging pile to charge electric vehicles, and it can also provide AC power to industrial and commercial parks, achieving peak shaving and valley filling for revenue; during charging, it supports both DC and AC modes to adapt to the needs of different scenarios, as detailed below:

[0053] The energy storage and charging unit 01 has multiple compartments. The liquid-cooled battery pack 111 in the energy storage compartment 11 is used for energy storage. The number of liquid-cooled battery packs 111 can be flexibly configured according to energy storage needs. The capacity is usually not less than 200 kWh, ensuring sufficient power support for various power consumption scenarios.

[0054] The AC power distribution compartment 13 is equipped with a PCS131 and an AC converter 132. The PCS131 is electrically connected to the liquid-cooled battery pack 111, and the AC converter 132 is electrically connected to the PCS131. When AC power is supplied, the PCS131 inverts the DC power of the liquid-cooled battery pack 111 into AC power, and performs overcurrent, overtemperature, and overvoltage protection. The AC converter 132 outputs the AC power to supply power to industrial and commercial parks. On the other hand, it can supply power to the AC equipment in the storage and charging unit 01.

[0055] In addition, the energy storage and charging unit 01 can be connected to an external AC power source through the AC converter 132 to replenish the liquid-cooled battery pack 111 in the energy storage compartment 11. During AC replenishment, the external AC power is transmitted to the PCS131 after being connected through the AC converter 132. The PCS131 rectifies the AC power into DC power to replenish the liquid-cooled battery pack 111.

[0056] The DC power distribution compartment 12 is equipped with a power conversion unit 124 and a DC conversion device 126, as described below. The charging device 129 on the outer wall of the DC power distribution compartment 12 includes a charging gun 1291 and a DC charging socket 1292. The power conversion unit 124 is electrically connected to the liquid-cooled battery pack 111 and also electrically connected to the charging device 129 (i.e., the charging gun 1291 and the DC charging socket 1292). The DC charging socket 1292 is used to connect to an external DC power source to replenish the liquid-cooled battery pack 111 of the energy storage compartment 11.

[0057] When powered by DC, the power conversion unit 124 converts the DC power of the liquid-cooled battery pack 111 into a charging voltage suitable for the electric vehicle, and charges the electric vehicle through the charging gun 1291.

[0058] During DC charging, an external DC power source is connected through the DC charging socket 1292, and after being adapted and converted by the power conversion unit 124, it flows into the liquid-cooled battery pack 111 for charging.

[0059] The DC-DC converter 126 is electrically connected to the power conversion unit 124 and is used to convert the DC power flowing out of the power conversion unit 124 into a voltage that is compatible with the mobile station 02. The storage and charging unit 01 can be detachably installed on the mobile station 02 as needed. After installation, the mobile station 02 is electrically connected to the DC-DC converter 126 to obtain working power. The mobile station 02 can be moved to the target location to provide power or replenish power as needed, meeting the usage requirements in different scenarios and improving the adaptability of this mobile storage and charging unit.

[0060] The energy management system 14 is the core control unit of the energy storage and charging unit 01. It is connected to the liquid-cooled battery pack 111, PCS 131, power conversion unit 124, DC-DC converter 126, AC-DC converter 132, and mobile station 02. It can monitor the energy storage and charging unit 01 in real time based on the signal feedback from each component and perform corresponding self-protection. The energy management system 14 is also equipped with an APP client for human-machine interaction. The energy management system 14 can transmit the detected information to the APP client via 4G or WIFI, which makes it convenient for operators to check the equipment status. Operators can also remotely control the mobile energy storage and charging unit through the APP client. For example, when supplying AC power to commercial or industrial parks, there is no need to go to the site in person, which greatly improves the convenience and timeliness of operation, enhances its stability and reliability, and reduces the risk of equipment damage due to sudden situations.

[0061] like Figure 3 , 4 As shown in Figure 10, the energy storage compartment 11 is also equipped with a high-voltage box 112 and a protection switch 113. The protection switch 113 is electrically connected to the liquid-cooled battery pack 111, the high-voltage box 112 is electrically connected to the protection switch 113, and the power conversion unit 124 and PCS 131 are both electrically connected to the high-voltage box 112.

[0062] The liquid-cooled battery pack 111, protection switch 113, and high-voltage box 112 are electrically connected sequentially via cables. The power conversion unit 124 and PCS 131 are both electrically connected to the high-voltage box 112. The energy management system 14 is signal-connected to the protection switch 113 and high-voltage box 112 to achieve status monitoring and information exchange. The protection switch 113, acting as the connection hub between the battery pack and the high-voltage box 112, remains closed during normal charging and discharging, providing a low-impedance conduction path for the total current of the large-capacity liquid-cooled battery pack 111. When it receives a fault signal from the energy management system 14, it can instantly cut off the high-voltage output of the liquid-cooled battery pack 111, preventing the fault from spreading.

[0063] The high-voltage box 112 is used for orderly power distribution of each branch circuit, reducing the risk of high-voltage connection between each circuit and avoiding chaotic connection of multiple circuits. At the same time, the high-voltage box 112 and the protection switch 113 form a dual protection mechanism to improve the safety and stability of the mobile energy storage and charging unit.

[0064] like Figure 3 , 4 As shown in Figures 5 and 10, the AC conversion device 132 includes a conversion switch 1321 that can output AC power or receive external AC power to charge the liquid-cooled battery pack 111; the storage and charging machine 01 is also provided with a liquid cooling section 15, which includes a liquid cooling unit 151 and a liquid cooling pipe 152 sealed to it.

[0065] The liquid cooling unit 151 is installed in the AC power distribution compartment 13. The liquid cooling pipe 152 is sealed to the liquid cooling battery pack 111. The changeover switch 1321 is electrically connected to the PCS 131 and the liquid cooling unit 151 respectively. The energy management system 14 is signal connected to the changeover switch 1321.

[0066] The transfer switch 1321 is electrically connected to the PCS131 and is mainly used to switch the AC power transmission path. The liquid chiller unit 151 is electrically connected to the transfer switch 1321, which distributes the appropriate AC operating voltage to it. In AC power supply mode, on the one hand, the transfer switch 1321 transmits the AC power (220V) inverted by the PCS131 to the liquid chiller unit 151 to ensure its normal operation; on the other hand, the transfer switch 1321 connects to external electrical equipment through a standardized interface to output 220V AC power.

[0067] During AC power replenishment, external AC power is connected through the transfer switch 1321 and transmitted to the PCS131. The PCS131 rectifies the AC power into DC power to replenish the liquid-cooled battery pack 111.

[0068] The liquid cooling section 15 is mainly used for temperature control of the liquid-cooled battery pack 111 in the energy storage compartment 11. The liquid cooling unit 151 is installed in the AC power distribution compartment 13. The liquid cooling pipe 152 includes an inlet pipe and a return pipe, extending from the AC power distribution compartment 13 to the energy storage compartment 11 from bottom to top, and is fixed on the inner walls of the left and right sides of the energy storage compartment 11. The inlet pipe and the return pipe are respectively sealed to the liquid-cooled battery pack 111 and the liquid cooling unit 151. During cooling, the coolant is transported to the liquid-cooled battery pack 111 through the inlet pipe via the liquid cooling unit 151. After absorbing the heat of the liquid-cooled battery pack 111, it flows back to the liquid cooling unit 151 through the return pipe for re-cooling, thus forming a liquid cooling cycle. This ensures that the temperature of the liquid-cooled battery pack 111 is always maintained within the set range, avoiding accidents such as fires and explosions caused by excessive temperature, and thus ensuring the stable operation of the mobile energy storage and charging unit.

[0069] The energy storage compartment 11 is equipped with a temperature sensor. The energy management system 14 is connected to the transfer switch 1321 and the temperature sensor signal to realize real-time monitoring of the temperature of the liquid-cooled battery pack 111. When the temperature of the liquid-cooled battery pack 111 exceeds the set range, the temperature sensor sends a signal to the energy management system 14. The energy management system 14 then sends a command to the transfer switch 1321 to connect the power supply circuit of the liquid-cooled unit 151. The liquid-cooled unit 151 starts to operate until the temperature of the liquid-cooled battery pack 111 drops to the set range. Then, the energy management system 14 commands the transfer switch 1321 to cut off the power supply circuit of the liquid-cooled unit 151, and the liquid-cooled unit 151 stops operating.

[0070] like Figure 3 , 10 As shown, the AC conversion device 132 also includes a switching power supply 1322, which is electrically connected to the transfer switch 1321, and the energy management system 14 is electrically connected to the switching power supply 1322.

[0071] The switching power supply 1322 is electrically connected to the changeover switch 1321. It is mainly used to convert the high-voltage AC power flowing out of the changeover switch 1321 into low-voltage (24V) DC power to supply the low-voltage components (such as the energy management system 14) in the energy storage and charging unit 01, so as to ensure the stable operation of the low-voltage components.

[0072] like Figure 3 , 4 As shown in Figures 7 and 10, the AC power distribution compartment 13 is also equipped with a UPS (Uninterruptible Power Supply) 133, an AC circuit breaker 134, a current transformer 136, a meter 138, and a surge protector 137.

[0073] UPS133 is connected between transfer switch 1321 and switching power supply 1322, and is also connected to energy management system 14 via signal. AC circuit breaker 134 and current transformer 136 are both electrically connected to PCS131. A branch copper busbar 135 is electrically connected to AC circuit breaker 134. The branch copper busbar 135 is electrically connected to surge protector 137. Meter 138 is electrically connected to current transformer 136 and branch copper busbar 135 respectively.

[0074] The AC power distribution compartment 13 is equipped with multiple AC power devices, including UPS 133, transfer switch 1321, and switching power supply 1322, which are electrically connected to provide emergency power to important internal components when the AC power supply to the mobile energy storage and charging unit is interrupted, ensuring that critical functions are not interrupted, such as the mobile energy management system 14, liquid cooling unit 151, and the fire alarm control panel 202 and charging card swiping module 161 mentioned below.

[0075] When the AC power supply to the mobile energy storage and charging unit is interrupted (e.g., due to a power grid outage, a PCS131 AC output failure, a disconnection of the AC circuit by the transfer switch 1321, or insufficient battery power causing the PCS131 to stop AC output), the 220V AC power at the input of the UPS133 will disappear or become abnormal. The UPS133 can detect this state in milliseconds through its internal voltage sampling circuit and then automatically switch to the built-in battery power supply. The UPS133 power supply is divided into three paths: First, it supplies power to the liquid cooling unit 151 and the fan 171 and dehumidifier 162 mentioned below via the transfer switch 1321, ensuring the stability of the internal state of the energy storage and charging unit 01 (e.g., the temperature of the liquid-cooled battery pack 111 and the humidity of the energy storage chamber 11 are within the normal range); Second, it is converted to 24V DC power by the switching power supply 1322 to power low-voltage equipment such as the energy control system and the charging card module 161; Third, it supplies power to the fire alarm control panel 202 to ensure the stable operation of the core control and safety protection functions in emergencies, thereby effectively improving safety performance.

[0076] Both the AC circuit breaker 134 and the current transformer 136 are electrically connected to the PCS131. The AC circuit breaker 134 is connected to a branch copper busbar 135, forming multiple terminals. The energy storage and charging unit 01 is also equipped with a grounding busbar. Through the cooperation of the branch copper busbar 135 and the grounding busbar, 380V three-phase power or 220V single-phase power can be output to the outside according to the power demand. When AC power is supplied, the PCS131 inverts the DC power of the liquid-cooled battery pack 111 into AC power, which flows into the branch copper busbar 135 through the AC circuit breaker 134 (380V between live wires, 220V between live and neutral wires), supplying power to industrial and commercial parks.

[0077] The current transformer 136 is electrically connected to the PCS131, converting the large current output by the PCS131 into a standard small current to provide a detection signal for the meter 138. At the same time, it realizes electrical isolation between the high-voltage circuit and the low-voltage control circuit, which is convenient for operators to maintain and improves the safety performance of the mobile storage and charging unit.

[0078] Meter 138 is electrically connected to current transformer 136 and busbar 135 respectively. It obtains current signal through current transformer 136 and voltage signal through busbar 135 to calculate the energy consumption of power supply to external sources.

[0079] The surge protector 137 is connected to the branch copper busbar 135. When the integrated energy storage and charging unit is struck by lightning, the surge protector 137 will conduct instantly, quickly discharging the high voltage surge to the ground through the grounding wire to prevent damage to the components.

[0080] It should be noted that the PCS (energy storage converter) 131, UPS (uninterruptible power supply) 133 and liquid cooling unit 15 are all prior art known in the art, and their functions, structures and operation are well known to those skilled in the art, so they will not be described in detail here.

[0081] like Figure 3 , 5 As shown in Figures 7 and 10, the DC power distribution compartment 12 includes a primary compartment 121, a secondary compartment 123, and a tertiary compartment 125; the charging device 129 includes a charging gun 1291 that can output DC power, a bracket 1293, a support column 1294, and a DC charging socket 1292 that can be connected to an external DC power source to charge the liquid-cooled battery pack 111.

[0082] A DC wiring box 122 electrically connected to the power conversion unit 124 is provided in the primary compartment 121. The power conversion unit 124 is arranged in the secondary compartment 123. The DC conversion device 126 is arranged in the tertiary compartment 125. The DC wiring box 122 is electrically connected to the DC conversion device 126, the charging gun 1291 and the DC charging socket 1292 respectively. The bracket 1293 and the support column 1294 are fixedly installed on the outer wall of the DC power distribution compartment 12.

[0083] The DC power distribution compartment 12 is divided into three compartments from top to bottom. The primary compartment 121 is located at the top, and the DC wiring box 122 is arranged in the primary compartment 121 and electrically connected to the power conversion unit 124. It is used to transmit the current converted by the power conversion unit 124 to the DC conversion device 126, the charging gun 1291, and the DC charging socket 1292 respectively. The charging gun 1291 is used to charge electric vehicles, and the DC charging socket 1292 is used to connect to an external DC power source to provide DC power to the liquid-cooled battery pack 111. The DC conversion device 126 then converts the current a second time and transmits it to the mobile station 02 to provide it with a suitable operating voltage.

[0084] The bracket 1293 is mainly used to hang the charging gun 1291, while the support column 1294 is used to hang the charging cable connected to the charging gun 1291. Both are firmly installed on the side wall of the DC power distribution compartment 12, effectively preventing the charging gun 1291 and the charging cable from falling and being damaged.

[0085] like Figure 2 , 3 As shown in Figures 5, 6, 7, and 10, the energy storage and charging unit 01 is also equipped with a front door 16, a rear door 17, a hanging lug 18, and a floor drain 19; the hanging lug 18 is located on the top of the energy storage and charging unit 01; the floor drain 19 is located at the bottom of the energy storage and charging unit 01; a fan 171 electrically connected to the changeover switch 1321 is installed on the rear door 17; a charging card reader module 161 electrically connected to the switching power supply 1322 and a dehumidifier 162 electrically connected to the changeover switch 1321 are installed on the front door 16; the fan 171, the dehumidifier 162, and the charging card reader module 161 are all connected to the energy management system 14 via signals.

[0086] To reduce the overall size of the energy storage and charging unit 01, optimize the internal cable layout of the energy storage and charging unit 01, and improve the convenience of operation and maintenance, the energy storage compartment 11 and the DC power distribution compartment 12 are arranged horizontally side by side, and the AC power distribution compartment 13 is arranged below the energy storage compartment 11.

[0087] The energy storage and charging unit 01 is equipped with a front door 16 on the front side and a rear door 17 on the rear side. Both the front door 16 and the rear door 17 adopt a double door design. Each door is equipped with louvers 164 for heat dissipation and ventilation. The left door of the front door 16 and the rear door 17 correspond to the DC power distribution compartment 12, and the right door corresponds to the energy storage compartment 11 and the AC power distribution compartment 13. This arrangement can provide independent protection for the electrical components in each compartment, facilitate the operation of operators and subsequent maintenance, and isolate the energy storage and charging unit 01 from the outside to improve safety performance.

[0088] The storage and charging unit 01 is equipped with temperature and humidity sensors to monitor the temperature and humidity values ​​inside the compartment in real time and transmit the signals to the energy management system 14. A fan 171 is installed on the rear door 17, and a dehumidifier 162 is installed on the front door 16. Both the fan 171 and the dehumidifier 162 are electrically connected to the changeover switch 1321 and are also signal-connected to the energy management system 14. The PCS 131 and liquid cooling unit 151 in the AC power distribution compartment 13 are each equipped with separate air ducts. The three-compartment design of the DC power distribution compartment 12 forms an air cavity, and heat dissipation is achieved through the fan 171 on the front door 16.

[0089] When the temperature or humidity inside the storage and charging unit 01 exceeds the set range, the energy management system 14 sends start / stop or speed adjustment commands to the fan 171 and dehumidifier 162 to control the temperature and humidity. At the same time, the fan 171 and dehumidifier 162 feed back their own working status to the energy management system 14, so that the system can monitor the equipment status in real time and trigger abnormal alarms.

[0090] A charging card reader module 161 is also installed on the front door 16. This module is electrically connected to the switching power supply 1322 and signal-connected to the energy management system 14, and is used for electric vehicle charging scenarios. During charging, after the user pays by swiping a card or scanning a code and passes the verification, the charging card reader module 161 sends a charging permission signal to the energy management system 14, triggering the charging gun 1291 to start fast charging. The user can then charge the electric vehicle through the charging gun 1291.

[0091] To ensure safe control of the mobile energy storage and charging unit in case of emergencies, an emergency stop button 165 is installed on the door corresponding to the energy storage compartment 11. This button is connected in series with the main charging and discharging circuit of the liquid-cooled battery pack 111. An emergency stop button 166 is installed on the door corresponding to the DC power distribution compartment 12. This button is connected in series with the main DC charging circuit. In the event of emergencies such as electric shock or fire, operators can quickly press the corresponding emergency stop button. Pressing the emergency stop button 165 will instantly cut off the main charging and discharging circuit of the liquid-cooled battery pack 111, and pressing the emergency stop button 166 will instantly cut off the DC charging circuit, maximizing the safety of personnel and equipment.

[0092] The top of the energy storage and charging unit 01 is equipped with lifting lugs 18, which can be used to lift the energy storage and charging unit 01 for easy installation on the mobile platform 02. The bottom of the energy storage and charging unit 01 is equipped with a floor drain 19 connected to the AC power distribution compartment 13 to drain the condensate generated during the cooling process of the liquid cooling unit 151, so as to prevent liquid accumulation from affecting the operation of electrical components.

[0093] In addition, a secondary equipment installation area 127 is set up inside the tertiary compartment 125. This installation area is mainly used for the installation of secondary related equipment, such as power distribution circuit breakers, sockets, relays, charging compartment data concentrators, 4G module units, aerosol fire extinguishing agents, and related wiring terminals. A side door 128 is installed on the side wall of the tertiary compartment 125 to facilitate the disassembly, assembly, and maintenance of various components in the secondary equipment installation area 127. Lighting is also installed in each compartment, and an antenna 141 is installed on the top of the mobile storage and charging unit to enhance signal transmission.

[0094] like Figure 3 , 7 As shown in Figure 10, the energy storage and charging unit 01 is also equipped with a fire protection unit 20. The fire protection unit 20 includes a fire control panel 202, a fire-fighting gas cylinder 201, a detector 204, and an audible and visual alarm 203. The fire control panel 202 is electrically connected to the UPS 133 and signal-connected to the energy management system 14. The fire-fighting gas cylinder 201 and the audible and visual alarm 203 are both electrically and signal-connected to the fire control panel 202. The detector 204 is signal-connected to the fire control panel 202. The fire-fighting gas cylinder 201 is located in the energy storage compartment 11, and the detector 204 is located in the DC power distribution compartment 12. The fire control panel 202 and the audible and visual alarm 203 are both located on the front door 16.

[0095] The Fire Department's 20 is the core safety protection unit of the mobile integrated fire storage and charging machine, used for rapid fire extinguishing, fire early warning, and emergency alarms, as detailed below:

[0096] The fire alarm control panel 202 is the control core of the fire department 20. It is installed on the front door 16 and electrically connected to the UPS 133. It is also signal-connected to the detectors 204 and the energy management system 14, enabling signal reception, command issuance, and status linkage. The detectors 204 are five-in-one detectors (CO, H2, heat, smoke, VOC), installed in the DC power distribution compartment 12. They are used to detect various specific fire signals in real time and quickly transmit them to the fire alarm control panel 202. The audible and visual alarm 203 is installed on the front door 16 and controlled by the fire alarm control panel 202, used to issue audible and visual alarms to the outside world. The fire-fighting gas cylinder 201 is installed behind the protection switch 113 in the energy storage compartment 11. It is used for fire extinguishing and is filled with perfluorohexanone gas to form a PACK-level fire-fighting system.

[0097] When the five-in-one detector 204 detects a specific fire signal (such as an abnormal increase in temperature inside the cabinet, excessive smoke concentration, etc.), it quickly transmits the signal to the fire alarm control panel 202. Upon receiving the signal, the fire alarm control panel 202 will perform three actions: first, it will trigger the fire extinguishing gas cylinder 201 to release perfluorohexanone gas for fire suppression; second, it will send a warning signal to the audible and visual alarm 203, which will start flashing and sound an alarm to notify relevant personnel to take emergency measures; third, it will transmit the signal to the energy management system 14. Upon receiving the signal, the energy management system 14 will quickly cut off the transmission circuits in each compartment for self-protection.

[0098] The rear door 17 is also equipped with a water fire extinguishing interface 172, which is used to connect a water nozzle to the water fire extinguishing interface 172. The water nozzle is used to quickly cool down and extinguish the fire on the storage and charging unit 01, minimizing the damage caused by the fire and further improving the safety of the mobile storage and charging unit.

[0099] like Figure 1 , 8 As shown in Figures 9 and 10, the mobile platform 02 is equipped with a control box 22, a motor 23, wheels 24, a fixing pin 25, and a limiting groove 26; the bottom of the energy storage and charging unit 01 is provided with a base 21, and the base 21 is provided with a fixing hole 211 that is adapted to the fixing pin 25; the energy storage and charging unit 01 is detachably installed in the limiting groove 26 of the mobile platform 02 through the base 21 and fixed on the mobile platform 02 by the fixing pin 25 inserted into the fixing hole 211; the control box 22 is electrically connected to the motor 23 and the DC-DC converter 126 respectively; and the energy management system 14 is signal connected to the control box 22.

[0100] Mobile station 02 is a four-wheeled flatbed vehicle mainly used to carry the energy storage and charging unit 01 and to achieve short-distance fixed-point movement. It is suitable for scenarios such as electric vehicle charging or power supply in industrial and commercial parks. Its structural design and control logic are as follows:

[0101] The upper surface of the mobile platform 02 is provided with a limiting groove 26 and a fixing pin 25. The bottom of the charging unit 01 is equipped with a base 21 that matches the limiting groove 26. The base 21 has a fixing hole 211 that matches the fixing pin 25. During installation, the charging unit 01 is first lifted by the lifting lug 18, and then the base 21 is snapped into the limiting groove 26. At the same time, the fixing pin 25 is inserted into the fixing hole 211 of the base 21 (at this time, the fixing pin 25 is fixedly connected to the base 21), so as to realize the quick installation and locking of the charging unit 01. To further improve the sturdiness of the charging unit 01, a limiting baffle can be added around it to prevent it from tilting during transportation or operation.

[0102] The motor 23 is connected to the drive shaft of the wheel 24. The control box 22 is bolted to the upper surface of the moving platform 02. It integrates components such as motor controller, relay, and Bluetooth module. One end of the control box 22 is electrically connected to the DC-DC converter 126 to obtain working power, and the other end is connected to the energy management system 14 to receive commands.

[0103] To enhance the steering capability of the mobile station 02, steering gears 27 electrically connected to the control box 22 are installed on the two front wheels of the mobile station 02. The steering action is adjusted by the commands output by the control box 22 to precisely control the forward direction of the mobile station 02.

[0104] When the mobile energy storage and charging unit needs to be moved, the energy management system 14 sends a command to the control box 22. The control box 22 starts the motor 23 and the steering gear 27 according to the command, driving the mobile platform 02 to move to the target position, and then performs the corresponding charging or power supply operation.

[0105] It should be noted that both the power conversion unit 124 and the DC-DC converter 126 are DC-DC converters. The power conversion unit 124 is used to convert the high-voltage DC power from the liquid-cooled battery pack 111 into DC power that is compatible with the charging voltage of the electric vehicle. The DC-DC converter 126 is used to convert the DC power output from the power conversion unit 124 into DC power that is compatible with the control box 22, so as to provide working power for the mobile station 02.

[0106] Existing emergency charging equipment is mostly emergency power vehicles, which fall under the category of special vehicles and have problems such as high cost and strict production qualification requirements. This mobile energy storage integrated machine has the advantage of dual-scenario application. During operation, it can be loaded onto a light truck for long-distance transportation, or installed on a mobile station 02 for short-distance movement. It not only has low manufacturing cost and lower production threshold, but also has strong flexibility and is more convenient to use, and has significant application and promotion value.

[0107] A method for applying a mobile storage and charging integrated machine, characterized by the following steps:

[0108] Mobility control: The energy management system 14 sends a movement command to the control box 22 of the mobile station 02. The control box 22 drives the motor 23 to move the wheels 24. After the energy storage unit 01 moves to the target position, it replenishes energy or supplies power to the outside, thereby effectively improving flexibility.

[0109] DC power supply: An external DC power supply is connected through a DC charging socket 1292 and flows into a power conversion unit 124 through a DC wiring box 122. The power conversion unit 124 converts the DC power into an appropriate voltage, which then charges the liquid-cooled battery pack 111 through a high-voltage box 112 and a protection switch 113. A multi-color indicator light 163 (such as red, green, and yellow) controlled by an energy management system 14 is installed on the front door 16 of the energy storage and charging unit 01. Each color represents a different working state of the energy storage and charging unit 01 (such as red for alarm state, green for charging state, and yellow for discharging state). The status can be identified by the color of the indicator light 163, and the appearance is also more aesthetically pleasing.

[0110] AC power supply: An external AC power source is connected through a transfer switch 1321. The PCS131 rectifies the AC power into DC power, which is then used to charge the liquid-cooled battery pack 111 via the high-voltage box 112 and the protection switch 113.

[0111] DC external charging: After the user pays by swiping a card or scanning a code on the charging card swiping module 161 and passes the verification, the charging card swiping module 161 sends a charging permission signal to the energy management system 14. The energy management system 14 controls the power conversion unit 124 to convert the DC power of the liquid-cooled battery pack 111 into an adaptive voltage, which is then transmitted to the charging gun 1291 through the DC wiring box 122 to charge the electric vehicle.

[0112] AC external discharge: After connecting the terminals of the transfer switch 1321, the terminals of the branch copper busbar 135, and the grounding busbar to the corresponding electrical equipment according to the power demand, the energy management system 14 sends instructions to the PCS131 and the transfer switch 1321. The PCS131 inverts the DC power of the liquid-cooled battery pack 111 into AC power, and outputs single-phase power through the transfer switch 1321, or outputs single-phase or three-phase power through the branch copper busbar 135.

[0113] Emergency power supply: UPS133 monitors power supply stability in real time. If AC power is interrupted, it will immediately supply power to the liquid-cooled unit 151, fire alarm control panel 202, fan 171, dehumidifier 162 and energy management system 14 to prevent safety accidents caused by the failure of important components of the mobile storage and charging unit.

[0114] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0115] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0116] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mobile integrated storage and charging machine, characterized in that: It includes a storage and charging unit and a mobile station. The storage and charging unit is equipped with an energy storage compartment, an AC power distribution compartment, a DC power distribution compartment and an energy management system. The energy storage compartment is equipped with a liquid-cooled battery pack. The AC power distribution compartment is equipped with a PCS and an AC conversion device. The PCS is electrically connected to the liquid-cooled battery pack and the AC conversion device, respectively. The AC conversion device is signal-connected to the energy management system. The DC power distribution compartment is equipped with a power conversion unit and a DC-DC converter. A charging device is installed on the outer wall of the DC power distribution compartment. The power conversion unit is electrically connected to the liquid-cooled battery pack, the DC-DC converter is electrically connected to the power conversion unit, and the charging device is electrically connected to the power conversion unit. The energy storage and charging machine is detachably mounted on a mobile platform, and the mobile platform is electrically connected to the DC-DC converter. The energy management system is connected to the liquid-cooled battery pack, PCS, power conversion unit, DC-DC converter and mobile station respectively. The charging device outputs DC power or receives external DC power to charge the liquid-cooled battery pack, and the AC conversion device outputs AC power or receives external AC power to charge the liquid-cooled battery pack.

2. The mobile storage and charging integrated machine according to claim 1, characterized in that: The energy storage compartment is also equipped with a high-voltage box and a protection switch. The protection switch is electrically connected to the liquid-cooled battery pack, the high-voltage box is electrically connected to the protection switch, and the power conversion unit and the PCS are both electrically connected to the high-voltage box.

3. A mobile storage and charging integrated machine according to claim 2, characterized in that: The AC conversion device includes a conversion switch that can output AC power or receive external AC power to charge the liquid-cooled battery pack; the storage and charging machine is also equipped with a liquid cooling section, which includes a liquid cooling unit and a liquid cooling pipe sealed to it. The liquid cooling unit is installed in the AC power distribution compartment. The liquid cooling pipe is sealed to the liquid cooling battery pack. The transfer switch is electrically connected to the PCS and the liquid cooling unit respectively. The energy management system is signal connected to the transfer switch.

4. A mobile storage and charging integrated machine according to claim 3, characterized in that: The AC conversion device also includes a switching power supply, which is electrically connected to a conversion switch, and the energy management system is electrically connected to the switching power supply.

5. A mobile storage and charging integrated machine according to claim 4, characterized in that: The AC power distribution room is also equipped with UPS, AC circuit breaker, current transformer, meter and surge protector; The UPS is connected between the transfer switch and the switching power supply, and is also connected to the energy management system. The AC circuit breaker and the current transformer are both electrically connected to the PCS. A branch copper busbar is electrically connected to the AC circuit breaker, and the branch copper busbar is electrically connected to the surge protector. The meter is electrically connected to the current transformer and the branch copper busbar respectively.

6. A mobile storage and charging integrated machine according to claim 5, characterized in that: The DC power distribution compartment includes a primary compartment, a secondary compartment, and a tertiary compartment; the charging device includes a charging gun that can output DC power, a bracket, a support column, and a DC charging socket that can be connected to an external DC power source to charge the liquid-cooled battery pack. The primary compartment is equipped with a DC wiring box that is electrically connected to the power conversion unit. The power conversion unit is arranged in the secondary compartment, and the DC conversion equipment is arranged in the tertiary compartment. The DC wiring box is electrically connected to the DC conversion equipment, the charging gun, and the DC charging socket, respectively. The bracket and support column are fixedly installed on the outer wall of the DC power distribution compartment.

7. A mobile storage and charging integrated machine according to claim 6, characterized in that: The energy storage and charging unit is also equipped with a front door, a rear door, a hanging lug, and a floor drain; the hanging lug is located on the top of the energy storage and charging unit; the floor drain is located at the bottom of the energy storage and charging unit; a fan electrically connected to a changeover switch is installed on the rear door; a charging card reader module electrically connected to a switching power supply and a dehumidifier electrically connected to a changeover switch are installed on the front door; the fan, dehumidifier, and charging card reader module are all connected to the energy management system signal.

8. A mobile storage and charging integrated machine according to claim 7, characterized in that: The energy storage unit is also equipped with a fire protection section, which includes a fire control panel, a fire-fighting gas cylinder, detectors, and an audible and visual alarm. The fire control panel is electrically connected to the UPS and signal-connected to the energy management system. The fire-fighting gas cylinder and the audible and visual alarm are both electrically and signal-connected to the fire control panel. The detectors are signal-connected to the fire control panel. The fire-fighting gas cylinder is located inside the energy storage compartment, and the detectors are located inside the DC power distribution compartment. The fire control panel and the audible and visual alarm are both located on the front door.

9. A mobile storage and charging integrated machine according to claim 8, characterized in that: The mobile platform is equipped with a control box, a motor, wheels, fixing pins, and a limiting groove; the bottom of the energy storage and charging unit is provided with a base, and the base is provided with fixing holes that are adapted to the fixing pins; the energy storage and charging unit is detachably installed in the limiting groove of the mobile platform through the base and fixed on the mobile platform by fixing pins inserted into the fixing holes; the control box is electrically connected to the motor and the DC-DC converter respectively; and the energy management system is signal connected to the control box.

10. An application method of the mobile storage and charging integrated machine as described in claims 1-9, characterized in that... Includes the following steps: The energy management system sends a movement command to the control box of the mobile station. The control box drives the motor to move the wheels. After the energy storage and charging unit moves to the target position, it replenishes energy or supplies power to the outside. An external DC power supply is connected through a DC charging socket, flows into the power conversion unit through a DC wiring box, and the power conversion unit converts the DC power into an appropriate voltage, which then charges the liquid-cooled battery pack through a high-voltage box and a protection switch. External AC power is connected through a transfer switch. The PCS rectifies the AC power into DC power, which is then used to charge the liquid-cooled battery pack via the high-voltage box and protection switch. After the charging card reader is swiped, the energy management system controls the power conversion unit to convert the DC power of the liquid-cooled battery pack into an appropriate voltage, which is then transmitted to the charging gun through the DC wiring box to charge the electric vehicle. The energy management system sends commands to the PCS and the transfer switch. The PCS inverts the DC power of the liquid-cooled battery pack into AC power, which is then output to the outside via the transfer switch or branch copper busbar. The UPS monitors power supply stability in real time. If AC power is interrupted, it immediately supplies power to the liquid-cooled unit, fire alarm control panel, fan, dehumidifier, and energy management system.

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