Skid-mounted energy storage system

Abstract

A skid-mounted energy storage system relates to the technical field of energy storage and comprises a base, an energy storage box, a heat dissipation air conditioner and a direct current charging pile, the energy storage box, the heat dissipation air conditioner and the direct current charging pile are mounted on the base, and the energy storage box is electrically connected with a power grid and used for storing alternating current input by the power grid and completing conversion between the alternating current and the direct current; the heat dissipation air conditioner is fixedly installed in the energy storage box and used for dissipating heat of the energy storage box. The direct current charging pile is electrically connected with the power supply end of the energy storage box and used for charging an electric automobile. The power supply mode of the energy storage system has the advantage of diversification.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a skid-mounted energy storage system. Background Art

[0002] At present, in the global energy consumption, traditional energy is still the main consumption method. Due to the prominent contradiction between the peak and trough of the traditional power grid, the power supply utilization rate is not ideal; for this reason, energy storage devices are needed to store the excess electricity at night for use during the day's peak hours. At the same time, with the increasing popularity of electric vehicles, the demand for charging piles is increasing. For some people working at construction sites, mining, etc., there is also a demand for vehicle charging. Due to the temporary nature of these project constructions, it is not very suitable to use the construction method of fixed buildings to build charging stations, which will lead to defects such as a long construction period and a large floor area, and it is not convenient to relocate. The design of the skid-mounted energy storage system is proposed to solve these problems.

[0003] The skid-mounted energy storage system can store cheap electric energy during the trough period of the power grid at night and release the electric energy during the peak hours of the power grid during the day to charge the charging pile, meeting people's living needs;

[0004] And this energy storage system is an energy storage solution for integrating energy storage components on a base or frame. The main advantage of this design lies in its portability and easy deployment characteristics; the skid-mounted energy storage system usually includes a battery pack, a power conversion system (such as an inverter and a rectifier), a control system, and other necessary electrical equipment. These components are pre-assembled and tested, and after being integrated in the factory, they are transported and installed as a complete unit.

[0005] Therefore, the characteristics of the skid-mounted energy storage system include: 1. Mobility: The system can be easily transferred from one location to another; 2. Quick deployment: Since all components have been pre-installed and configured, it can be set up and put into use in a short time; 3. Flexibility: It can be customized according to different application scenarios and requirements; 4. Standardization: Adopting a standardized design, it is convenient for maintenance and expansion.

[0006] And this type of energy storage system is widely used in various scenarios, for example: as an auxiliary service of the power grid, providing functions such as frequency regulation and peak shaving; providing power reserve for remote areas or temporary facilities; being combined with renewable energy power generation systems (such as solar photovoltaic panels or wind turbines) to smooth the output and improve the energy utilization efficiency.

[0007] However, the traditional energy storage system is limited by its own capacity and structure, resulting in a small energy storage capacity and a low output power of the energy storage system. Therefore, it is generally only used for household electricity and cannot meet the use requirements of some high-power electricity consumption scenarios.

[0008] Chinese Patent (CN114069090B) discloses a heat dissipation device for a mobile energy storage container and a mobile energy storage container. By installing a top-mounted air conditioner on the top of the container and arranging the air supply duct on both sides of the battery rack, the battery boxes at different positions are cooled respectively through multiple air outlets of the heat dissipation duct assembly, reducing the air resistance of the duct and keeping the air speed of each air outlet consistent, achieving uniform heat dissipation for the battery boxes at different heights on the battery rack and improving the overall performance of the energy storage container. However, this energy storage system still has the problem of small capacity;

[0009] Therefore, we propose an energy storage system with diversified power supply methods. Utility Model Content

[0010] In order to overcome the deficiencies in the background technology, the present utility model discloses a skid-mounted energy storage system.

[0011] To achieve the above-mentioned invention purpose, the present utility model adopts the following technical solutions:

[0012] A skid-mounted energy storage system includes a base, and an energy storage box, a heat dissipation air conditioner and a DC charging pile installed on the base. The energy storage box is electrically connected to the power grid, used for storing the alternating current input by the power grid and completing the conversion between alternating current and direct current;

[0013] The heat dissipation air conditioner is fixedly installed in the energy storage box for dissipating heat from the energy storage box;

[0014] The DC charging pile is electrically connected to the power supply end of the energy storage box for charging electric vehicles.

[0015] Preferably, the energy storage box includes a box body, and a lithium battery module, a BMS module and a PCS module arranged in the box body; wherein the box body is provided with a charging socket and a power supply socket, both sockets are electrically connected to the PCS module, and the PCS module is respectively electrically connected to the lithium battery module and the BMS module.

[0016] Preferably, a solar panel is provided on the top surface of the energy storage box, and the solar panel is electrically connected to the PCS module.

[0017] Preferably, a smoke and temperature sensing alarm device is provided at the top inside the energy storage box.

[0018] Preferably, the energy storage box is electrically connected to the power grid through an AC distribution box.

[0019] Preferably, a lighting device is provided at the top inside the energy storage box.

[0020] Preferably, a plurality of tether posts are respectively provided on both side surfaces of the base.

[0021] Due to the above - described technical solution, the utility model has the following beneficial effects:

[0022] A skid - mounted energy storage system disclosed by the utility model

[0023] can be quickly deployed to the required places, without the need for a complex installation process, and is suitable for power supply requirements in temporary or emergency situations;

[0024] In addition, the system integrates multiple functions such as an energy storage box, a cooling air conditioner, and a DC charging pile, making the system more compact and saving space;

[0025] Moreover, the energy storage box integrates a lithium - battery module, a BMS module, and a PCS module, simplifying the structure and maintenance of the system;

[0026] Furthermore, through the PCS module, the conversion between alternating current and direct current is realized, enabling the energy storage system to not only store electrical energy from the power grid but also provide charging services for electric vehicles, improving the diversity of the functions of this energy storage system;

[0027] And by managing and protecting the lithium - battery module through the BMS module, the battery life can be extended and the safety can be improved. Additionally, the status of the battery can be monitored in real - time, facilitating maintenance personnel for maintenance and troubleshooting;

[0028] On the top of the energy storage box, there is a solar panel, which can utilize solar energy to provide an additional power source for the system, reducing the dependence on the power grid and also reducing carbon emissions;

[0029] In addition, the cooling air conditioner ensures that the system maintains an appropriate temperature during high - load operation, avoiding performance degradation or damage caused by overheating; there is a smoke and temperature sensor alarm device, which can detect potential fire hazards in a timely manner, improving the safety performance of the system; and the lighting device facilitates inspections and maintenance at night or under insufficient light conditions, all of which improve the safety during the operation of this energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the utility model;

[0031] Figure 2 is a schematic structural diagram of the energy storage box.

[0032] In the figure: 1, base; 2, energy storage box; 21, box body; 22, lithium - battery module; 23, BMS module; 24, PCS module; 3, cooling air conditioner; 4, DC charging pile; 5, solar panel; 6, smoke and temperature sensor alarm device; 7, AC distribution box; 8, lighting device; 9, tether post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions of the present utility model will be described in conjunction with the accompanying drawings in the embodiments of the present utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or positional relationship, they only correspond to the accompanying drawings of the present utility model. For the convenience of describing the present utility model, it does not indicate or imply that the device or component referred to must have a specific orientation:

[0034] Embodiment 1 is as follows:

[0035] Combined with the attached Figure 1-2 The described skid-mounted energy storage system includes a base 1, and an energy storage box 2, a cooling air conditioner 3, and a DC charging pile 4 installed on the base 1. When setting up this energy storage system, the base 1 can be directly set on the ground to complete the installation of this energy storage system. Moreover, since many devices are installed on the base 1, when moving this energy storage system, the grasping component of a driving device such as a crane can directly act on the base 1, thereby driving the movement of this energy storage system. This driving method is simple and efficient; particularly, multiple tether posts 9 are respectively provided on both side surfaces of the base 1, and the multiple tether posts 9 are evenly distributed. A grasping rope is sleeved on each tether post 9, and then the multiple grasping ropes are all connected to the grasping component of the driving device to disperse the force on the base 1 and ensure that the driving device can smoothly lift the base 1;

[0036] The energy storage box 2 is electrically connected to the power grid and is used to store the alternating current input by the power grid and complete the conversion between alternating current and direct current;

[0037] Particularly, a solar panel 5 is provided on the top surface of the energy storage box 2, and the solar panel 5 is electrically connected to the PCS module 24, which can improve the energy storage method of this energy storage system and reduce the consumption of the power grid; in addition, a smoke and temperature sensing alarm device 6 is provided at the top inside the energy storage box 2. When a short circuit occurs in the battery, abnormal smoke or heat is generated, it can alarm to remind the staff to arrange for handling in time or simultaneously start the fire extinguishing system, and can detect potential fire hazards in time, improving the safety performance of the system;

[0038] In addition, the energy storage box 2 is electrically connected to the power grid through an AC distribution box 7. In order to protect this device from being damaged by the power grid voltage and for the safe maintenance of this device, this AC distribution box 7 is specially designed. When the external power grid voltage is too high, the circuit breaker inside the box will immediately disconnect to ensure the safety of this device; at the same time, for the safety during maintenance, this device can also be disconnected when needed to facilitate safe maintenance;

[0039] According to needs, a lighting device 8 is provided at the top inside the energy storage box 2, and the lighting device 8 is convenient for inspection and maintenance at night or under insufficient light conditions;

[0040] The heat dissipation air conditioner 3 is fixedly installed in the energy storage box 2 for dissipating heat from the energy storage box 2, ensuring that the system maintains an appropriate temperature during high-load operation and avoiding performance degradation or damage caused by overheating;

[0041] The DC charging pile 4 is electrically connected to the power supply end of the energy storage box 2 for charging electric vehicles; it should be noted that the power supply end of the energy storage box can also provide power for other electrical loads of users. That is, the DC charging pile 4 here can charge electric vehicles after being connected to the energy storage box 2, and the energy storage box 2 can supply power to other electrical loads of users when not connected to the DC charging pile 4.

[0042] Embodiment 2 is as follows:

[0043] On the basis of Embodiment 1, the energy storage box 2 is further defined. The energy storage box 2 includes a box body 21, and a lithium battery module 22, a BMS module 23, and a PCS module 24 arranged in the box body 21; wherein the box body 21 is provided with a charging socket and a power supply socket, both sockets are electrically connected to the PCS module 24, and the PCS module 24 is electrically connected to the lithium battery module and the BMS module 23 respectively;

[0044] Among them, the BMS module 23, that is, the battery management system, is mainly for intelligent management and maintenance of each battery unit, preventing the battery from overcharging and over-discharging, extending the service life of the battery, and monitoring the state of the battery.

[0045] And the BMS module 23 is responsible for the communication work between the PCS module 24 and the lithium battery module to ensure the smooth coordination of the two modules;

[0046] The PCS module 24 is responsible for controlling the charging and discharging processes of the lithium battery pack, performing AC / DC conversion, and supplying power to AC loads. Its constituent units mainly consist of a DC / AC bidirectional converter, a control unit, etc.; at the same time, the PCS can obtain the battery pack status information through communication with the BMS via the CAN interface, dry contact transmission, etc., and can achieve protective charging and discharging of the battery to ensure the safe operation of the battery;

[0047] In addition, a specific embodiment of the lithium battery module is as follows: The lithium battery module is composed of 130 battery packs in total, which can provide 2 MWh of electric energy for users. This device uses lithium iron phosphate batteries for energy storage, with the advantages of long life, high safety, large capacity, and environmental friendliness. With the cooperation of the PCS cabinet, the lithium battery module can convert mains power into chemical energy and store it in the battery, and then convert the chemical energy into electrical energy for the charging pile 4 to use when needed.

[0048] The parts not detailed in this utility model are prior art. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within this utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A skid-mounted energy storage system, characterized by: It comprises a base (1), and an energy storage box (2), a heat dissipation air conditioner (3) and a DC charging pile (4) installed on the base (1); the energy storage box (2) is electrically connected to a power grid and is used to store alternating current input from the power grid and complete the conversion between alternating current and direct current; The heat dissipation air conditioner (3) is fixedly installed in the energy storage box (2) and is used to dissipate heat from the energy storage box (2); The DC charging pile (4) is electrically connected to the power supply end of the energy storage box (2) and is used to charge the electric vehicle.

2. The skid-mounted energy storage system according to claim 1, characterized in that: The energy storage box (2) comprises a box body (21), and a lithium battery module (22), a BMS module (23) and a PCS module (24) arranged in the box body (21); wherein the box body (21) is provided with a charging socket and a power supply socket, both sockets are electrically connected to the PCS module (24), and the PCS module (24) is electrically connected to the lithium battery module and the BMS module (23), respectively.

3. The skid-mounted energy storage system according to claim 2, characterized in that: A solar panel (5) is provided on the top surface of the energy storage box (2), and the solar panel (5) is electrically connected to the PCS module (24).

4. The skid-mounted energy storage system according to claim 1, characterized in that: A smoke and temperature alarm device (6) is provided on the top of the energy storage box (2).

5. The skid-mounted energy storage system according to claim 1, characterized in that: The energy storage box (2) is electrically connected to the power grid via an AC distribution box (7).

6. The skid-mounted energy storage system according to claim 1, characterized in that: A lighting device (8) is provided on the top of the energy storage box (2).

7. The skid-mounted energy storage system according to claim 1, characterized in that: A plurality of rope-tying columns (9) are respectively provided on the two side surfaces of the base (1).

Images