Mobile lithium battery power supply device

Abstract

The utility model provides a mobile lithium battery power supply device which comprises a box body in which an accommodating space is formed; the battery unit is arranged in the accommodating space, the battery unit comprises a plurality of battery packs, a cooling plate is arranged at the corresponding position of each battery pack, and the battery unit is used for providing a power supply; the energy storage converter is arranged in the accommodating space, and the energy storage converter is a bidirectional converter and is electrically connected with the battery unit; the transformer is arranged in the accommodating space, and the transformer is connected with the energy storage converter; the liquid cooling system is arranged in the accommodating space, the liquid cooling system is connected with the battery unit, the energy storage converter and the transformer, and cooling liquid of the liquid cooling system flows through the cooling plate. According to the embodiment of the utility model, the device is convenient to move, and the cost can be greatly reduced. The structure is compact, internal elements are used in a common-source mode, and the size and the overall weight of the system are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of power management technology in transportation scenarios, and in particular to a mobile lithium battery power supply device. Background Technology

[0002] With the advancement of science and technology, the power supply methods for yard cranes have been continuously improved, from the initial large diesel generator sets to hybrid mains power, and then to large lithium battery systems. Today, with increasingly stringent national environmental protection requirements, especially the carbon emission requirements of port terminals along the coast and rivers, higher demands are being placed on the power supply methods of rubber-tired cranes. To meet environmental requirements and achieve "zero carbon emissions" for rubber-tired cranes, many projects have adopted a solution of mains power (contact line or cable reel) plus mobile diesel generator sets or lithium batteries. However, this approach has several drawbacks: using small diesel generators for relocation cannot achieve completely zero carbon emissions, and the maintenance and upkeep of diesel generator sets are cumbersome and inconvenient; using conventional lithium batteries for relocation requires each yard crane to be equipped with a lithium battery system, resulting in high costs; once a conventional lithium battery system is selected, it cannot be changed, offering poor scalability; and conventional lithium battery systems are heavy, effectively adding approximately 6 tons of weight to the machine when the battery is not in operation, increasing overall energy consumption. For retrofitting the power supply systems of older models, conventional lithium battery solutions are difficult and costly to implement. Utility Model Content

[0003] In view of this, the present invention provides a mobile lithium battery power supply device that can avoid the problems of using diesel generator sets and inconvenient maintenance, and can also solve the problems of high cost, poor performance and inconvenient operation of existing power supply systems.

[0004] To solve the above-mentioned technical problems, this utility model provides a mobile lithium battery power supply device.

[0005] An embodiment of this utility model provides a mobile lithium battery power supply device, comprising:

[0006] A housing, wherein an accommodating space is formed within the housing;

[0007] A battery unit is disposed within the accommodating space. The battery unit includes multiple battery packs, and each battery pack has a corresponding cooling plate. The battery unit is used to provide power.

[0008] An energy storage converter is disposed within the accommodating space. The energy storage converter is a bidirectional converter and is electrically connected to the battery power supply. It is used to control the charging and discharging processes of the battery cell.

[0009] A transformer is located within the enclosure space and is connected to the energy storage converter for outputting a specific voltage level.

[0010] A liquid cooling system is provided within the containment space. The liquid cooling system is connected to the battery cell, the energy storage converter, and the transformer, and is used to provide coolant to the battery cell, the energy storage converter, and the transformer. The coolant of the liquid cooling system flows through the cooling plate to cool the battery pack.

[0011] According to one embodiment of the present invention, the portable lithium battery power supply device further includes an automatic fire extinguisher, which is disposed within the accommodating space and electrically connected to the battery unit.

[0012] According to one embodiment of the present invention, the accommodating space is further provided with a hand-cranked reel for winding and unwinding cables.

[0013] According to one embodiment of the present invention, the box body is provided with a switch door, and the latch door is provided with a buckle for retracting the switch door.

[0014] According to one embodiment of the present invention, a forklift hole is provided at the bottom of the box body.

[0015] According to one embodiment of the present invention, two energy storage converters are provided, and the energy storage transformers are equipped with two different voltage output devices for controlling the voltage of the components in the storage space.

[0016] According to one embodiment of the present invention, the mobile lithium battery power supply device further includes an energy management system, which is communicatively connected to the battery cell, the energy storage converter, the transformer, the liquid cooling system and the automatic fire extinguisher, and is used to detect the operating status and environmental conditions of each of the components and adjust the output power of the system.

[0017] According to one embodiment of the present invention, the energy management system includes a human-machine interface.

[0018] According to one embodiment of the present invention, each of the battery packs is provided with a battery management system.

[0019] According to one embodiment of the present invention, the liquid cooling system includes at least two water chillers.

[0020] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0021] The mobile lithium battery power supply device according to this utility model embodiment has a simple structure, is centrally housed in a single enclosure, facilitates movement, and significantly reduces costs. The input and output voltages are adjustable, and the battery system power can meet the relocation requirements of most field bridge products. It adopts a compact layout and a highly integrated liquid cooling device using a common source for internal components, greatly reducing system size and overall weight. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of a mobile lithium battery power supply device according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal component connections in one embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of a mobile lithium battery power supply device according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the internal structure of a mobile lithium battery power supply device according to an embodiment of the present invention from another angle.

[0026] Figure Labels

[0027] Mobile lithium battery power supply device 100;

[0028] Box body 10; Door 11;

[0029] Battery cell 20; Battery pack 21;

[0030] Energy storage converter 30;

[0031] Transformer 40;

[0032] Liquid cooling system 50;

[0033] Automatic fire extinguisher 60;

[0034] Hand-cranked reel 70;

[0035] Control cabinet 80. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0037] The present invention provides a mobile lithium battery power supply device.

[0038] refer to Figures 1-4 , Figure 1 A schematic diagram of the external structure of a mobile lithium battery power supply device according to an embodiment of the present invention is shown. Figure 2 This invention provides a schematic diagram showing the internal component connections of an embodiment of the present invention. Figure 3 A schematic diagram of the internal structure of a mobile lithium battery power supply device according to an embodiment of the present invention is shown. Figure 4 This diagram shows another angle of the internal structure of a portable lithium battery power supply device according to an embodiment of the present invention.

[0039] like Figures 1 to 4 As shown, the mobile lithium battery power supply device 100 includes a housing 10, within which a receiving space is formed. Within the receiving space are a battery cell 20, an energy storage converter 30, a transformer 40, and a liquid cooling system 50.

[0040] The battery unit 20 includes multiple battery packs 21, each with a corresponding cooling plate (not shown). The battery unit 20 provides power. The energy storage converter 30 is a bidirectional converter electrically connected to the battery power supply and controls the charging and discharging processes of the battery unit 20. The transformer 40 is connected to the energy storage converter 30 and outputs a specific voltage level. The liquid cooling system 50 is connected to the battery unit 20, the energy storage converter 30, and the transformer 40, and provides coolant to these components. The coolant in the liquid cooling system 50 flows through the cooling plate to cool the battery packs 21.

[0041] Specifically, such as Figure 1 As shown, considering the various ambient temperatures and heavy salt spray conditions at the dock site, the entire mobile lithium battery power unit 100 is designed as an outdoor energy storage cabinet (box 10) with an IP55 protection rating. This design meets the requirements for rainproof, fireproof, dustproof, corrosion-resistant, windproof, impact- and vibration-resistant properties, has good sealing performance, meets the IP55 protection rating, and is suitable for the dock site environment. Furthermore, the mobile lithium battery power unit 100 is a small energy storage power source that can be temporarily fixed above or below the saddle beam of a tire crane, providing working power during relocation and trolley movement.

[0042] The battery unit 20 may contain a certain number of battery packs 21 and a high-voltage distribution box, serving as an energy storage unit. For example... Figure 2 and Figure 4As shown, the mobile lithium battery power system has two operating states. The energy storage inverter 30 can be composed of a DC / AC bidirectional inverter, a control unit, etc., and acts as an inverter unit to control the charging and discharging processes of the battery cell 20. The charging and discharging states are isolated by hardware to prevent simultaneous charging and discharging. During charging, external three-phase power is supplied to the battery pack 21 through the PCS. During discharging, the battery pack 21 outputs three-phase power through the PCS, which is then output to the required external voltage after passing through the transformer 40.

[0043] Transformer 40, as a voltage level regulation unit, can output three-phase power with specific voltage level requirements to meet the operating conditions during equipment relocation and improve voltage stability. To save space, battery unit 20, energy storage converter 30, and transformer 40 are all cooled by liquid cooling, with the entire system using the same liquid cooling system 50. For equipment requiring liquid cooling, battery liquid cooling can be performed on each module through an integrated coolant distribution system within the rack. Specifically, inside battery unit 20, coolant flows through a cooling plate below battery pack 21 for thermal management. This arrangement not only cools battery pack 21 but also prevents direct contact between batteries and the coolant, or inter-battery cooling.

[0044] The mobile lithium battery power supply device 100 according to this utility model embodiment can achieve portability and significantly reduce costs. The input and output voltages are adjustable, and the battery system power can meet the relocation requirements of most field crane products. It adopts a cabinet 10 design, with all components or equipment housed within the cabinet 10, achieving a compact layout. The highly integrated liquid cooling device, using a common source for internal components, greatly reduces the system size and overall weight. This device combines the concept of a power system energy storage cabinet with the application example of a conventional lithium battery pack 21 in tire crane relocation, proposing a mobile lithium battery system solution. This solution is technologically mature, has zero carbon emissions, is easy to maintain and repair, and is low-cost.

[0045] Based on the power calculations for the relocation of the tire crane and the actual working conditions, the battery capacity is calculated. The device can be configured with 4 battery packs 21, with a total capacity of over 140 kWh. Each battery pack 21 can be equipped with a battery management system (BMS) and can be configured with two 100 kW parallel power conversion systems (including energy storage transformer 40) with an output power of 150 kW. The energy storage transformer 40 has two sets of different voltage output devices to meet the voltage requirements of the components in the cabinet, including but not limited to water chillers, fire protection systems, lighting systems, control systems, and external power supply equipment.

[0046] like Figure 3 and Figure 4As shown, in one embodiment of this utility model, the portable lithium battery power supply device further includes an automatic fire extinguisher 60, which is disposed within the receiving space and connected to the battery unit (corresponding to...). Figure 2 The battery unit 20 is electrically connected. The automatic fire extinguisher 60 is a heptafluoropropane automatic fire extinguisher 60, which sprays gas after the temperature inside the cabinet reaches the set value to ensure the fire safety of the entire power supply unit.

[0047] According to one embodiment of the present invention, such as Figure 4 As shown, the conventional working space of a tire-mounted crane also includes a hand-cranked cable reel 70 for cable winding and unwinding. This hand-cranked cable reel system facilitates quick connection to the power socket when the cabinet is mounted on the tire-mounted crane, simplifying operation and enabling rapid power connection to external loads. Furthermore, the reel features a self-locking position function to prevent cable swaying during crane operation.

[0048] According to one embodiment of the present invention, such as Figure 1 As shown, the housing 10 is equipped with a switch door 11, and the latch door is equipped with a latch for retracting the switch door 11.

[0049] According to one embodiment of the present invention, a forklift hole is provided at the bottom of the box 10 to facilitate the handling of various machinery at the dock site.

[0050] According to one embodiment of the present invention, the mobile lithium battery power supply device 100 further includes an energy management system, which is communicatively connected to the battery unit 20, the energy storage converter 30, the transformer 40, the liquid cooling system 50 and the automatic fire extinguisher 60, and is used to detect the operating status and environmental conditions of each component and adjust the output power of the system.

[0051] In embodiments of this invention, the battery unit 20, energy storage converter 30, transformer 40, liquid cooling system 50, and automatic fire extinguisher 60 can all communicate with the Energy Management System (EMS). Figure 3 The control cabinet 80 in the system utilizes a microgrid controller based on a 64-bit ARM processor, employing an embedded real-time LINUX operating system and developed using the C++ language. This EMS system can monitor the operating status and environmental conditions of various devices, such as battery pack 21, energy storage devices, transformer 40, and the fire protection system (automatic fire extinguisher 60), in real time. It can also collect data from sensors and devices in real time, process, store, and analyze the data. Using advanced data analysis technology, it optimizes the system's charging and discharging strategies and adjusts the system's output power according to real-time load demands to ensure balance.

[0052] According to one embodiment of this utility model, the energy management system includes a human-machine interface (HMI) for final interaction with the outside world, facilitating real-time monitoring of the system status by technicians and obtaining corresponding maintenance or repair information.

[0053] According to one embodiment of the present invention, such as Figure 4 As shown, the liquid cooling system 50 includes at least two water chillers to meet the cooling requirements of the entire unit.

[0054] In summary, the mobile lithium battery power supply device according to the embodiments of this utility model can avoid the use of traditional diesel engine sets and utilize increasingly mature lithium battery pack systems. It is portable and adaptable to the actual relocation conditions of field bridges, significantly reducing costs, and features a simple interface and good versatility. The input and output voltages are adjustable, and the battery system power can meet the relocation requirements of most field bridge products. Adopting a compact layout and a highly integrated liquid cooling device using a common power source for internal components, it greatly reduces system size and overall weight. For retrofitting older models, modifications to individual units are minimal; only a unified power supply interface is required. Maintenance is simple and easy to operate.

[0055] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0056] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A mobile lithium battery power supply device, characterized by, The application relates to a battery box. The battery box comprises: a box body, wherein a containing space is formed in the box body; a battery unit arranged in the containing space, wherein the battery unit comprises a plurality of battery groups, a cooling plate is arranged at a corresponding position of each battery group, and the battery unit is used for providing power supply; a storage energy converter arranged in the containing space, wherein the storage energy converter is a bidirectional converter, is electrically connected with the battery unit, and is used for controlling charging and discharging processes of the battery unit; a transformer arranged in the containing space, wherein the transformer is connected with the storage energy converter and is used for controlling specific voltage levels; 2. The mobile lithium battery power plant of claim 1, wherein, a liquid cooling system arranged in the containing space, wherein the liquid cooling system is connected with the battery unit, the storage energy converter and the transformer, and is used for providing cooling liquid to the battery unit, the storage energy converter and the transformer, and wherein the cooling liquid of the liquid cooling system flows through the cooling plate to cool the battery groups. The application further comprises:

3. The mobile lithium battery power plant of claim 1 or 2, wherein, an automatic fire extinguisher arranged in the containing space and electrically connected with the battery unit.

4. The mobile lithium battery power plant of claim 3, wherein, A hand-cranking reel is further arranged in the containing space and is used for winding and unwinding cables.

5. The mobile lithium battery power plant of claim 1, wherein, A switch door is arranged on the box body, wherein a lock catch is arranged on the switch door and is used for locking the switch door.

6. The mobile lithium battery power plant of claim 2, wherein, A forklift hole is arranged below the box body.

7. The mobile lithium battery power plant of claim 6, wherein, The storage energy converter is provided with two storage energy converters, and two different voltage output devices are arranged in the storage energy converters and are used for controlling voltages of components in the containing space.

8. The mobile lithium battery power plant of claim 7, wherein, The application further comprises an energy management system, wherein the energy management system is communicatively connected with the battery unit, the storage energy converter, the transformer, the liquid cooling system and the automatic fire extinguisher, is used for detecting running states and environmental conditions of the components, and adjusts output power of the system.

9. The mobile lithium battery power plant of claim 1, wherein, The energy management system comprises a human-machine interface used for human-machine interaction.

10. The mobile lithium battery power plant of claim 1, wherein, Each battery group is provided with a battery management system. The liquid cooling system comprises at least two water cooling machines used for providing cooling liquid.

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