A high energy density marine battery module

Abstract

The utility model discloses a kind of marine battery module of high energy density, including heat dissipation shell and several groups of parallelly arranged in the heat dissipation shell and be set in the electric core group, each group of the electric core group includes multiple parallelly arranged ternary electric core, the top of each group of the electric core group and the heat dissipation shell between are provided with heat-conducting silica gel, the upper surface and the lower surface of the heat dissipation shell are provided with integrally-formed corrugated wave structure.The utility model uses high rate high energy density ternary electric core, then combines the corrugated wave structure of heat dissipation shell surface, not only realizes the ultimate lightweight of module, but also can meet the design requirement of high strength high safety system, realizes 145Wh / kg high energy density.

Description

Technical Field

[0001] This utility model relates to the field of marine battery technology, specifically to a high-energy-density marine battery module. Background Technology

[0002] Currently, most commercial ships rely primarily on heavy fuel oil as fuel, and their electrical systems also depend mainly on the combustion of heavy fuel oil for power. However, the combustion of heavy fuel oil produces pollutants such as aromatic cyclic chemicals and carbon dioxide, which pose significant risks to the environment and human health. Furthermore, heavy fuel oil is viscous and non-volatile, meaning that leaks on ships would severely threaten the marine environment. Considering these factors, and in order to conserve resources, protect the environment, and promote sustainable development, new energy ships are increasingly being widely adopted. For example, ships powered by batteries typically use high-performance batteries, such as lithium iron phosphate batteries, to provide electricity. Compared to traditional fuel-powered ships, battery-powered ships offer advantages such as zero emissions, low noise, and low energy consumption, making them a more environmentally friendly and energy-efficient type of vessel.

[0003] However, the lithium iron phosphate battery modules commonly used in existing battery-powered ships suffer from low energy density, making it difficult to meet the demands of long-range and high-power vessels. Furthermore, some battery modules have poor heat dissipation efficiency, failing to dissipate the heat generated by the cells in a timely manner, leading to heat accumulation, increasing the risk of thermal runaway, and seriously affecting the safety of ship navigation.

[0004] Therefore, there is an urgent need to develop a marine battery module that can both improve energy density and have good heat dissipation performance. Utility Model Content

[0005] In order to overcome the problems of low energy density and low heat dissipation efficiency in existing marine battery modules, this utility model provides a high energy density marine battery module.

[0006] The technical solution of this utility model is as follows: A high-energy-density marine battery module includes a heat dissipation shell and several groups of battery cells arranged side by side within the heat dissipation shell. Each group of battery cells includes multiple ternary batteries arranged side by side. Thermally conductive silicone is provided between the top of each group of battery cells and the heat dissipation shell. The upper and lower surfaces of the heat dissipation shell are provided with an integrally formed corrugated wave structure.

[0007] As a preferred embodiment of this utility model, the heat dissipation shell is made of aluminum alloy.

[0008] As a preferred embodiment of this utility model, the surface of the corrugated wave structure is provided with a plurality of elongated grooves arranged side by side along its short side, and the arrangement direction of the elongated grooves is consistent with the long side direction of the corrugated wave structure.

[0009] As a preferred embodiment of this utility model, the battery cell assembly is provided in two sets.

[0010] As a preferred embodiment of this utility model, each group of battery cells includes fifteen ternary battery cells.

[0011] As a preferred embodiment of this utility model, the energy density of the ternary battery cell is 145Wh / kg.

[0012] In a preferred embodiment of this utility model, the top of all the battery cells is fixed by an upper fixing plate.

[0013] In a preferred embodiment of this utility model, the bottom of all the battery cells is fixed by a lower fixing plate.

[0014] As a preferred embodiment of this utility model, two adjacent ternary battery cells are separated by aerogel.

[0015] As a preferred embodiment of this utility model, each ternary cell in each group of the battery cells is connected by a series support, and adjacent groups of the battery cells are separated by the series support.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The high-energy-density marine battery module provided by this utility model adopts high-rate, high-energy-density ternary lithium battery cells, combined with a lightweight aluminum alloy heat dissipation shell with high heat dissipation performance and strong corrosion resistance, ultimately achieving extreme lightweighting of the module; at the same time, by setting a corrugated wave structure on the surface of the heat dissipation shell, the overall strength of the heat dissipation shell is greatly enhanced while also increasing the surface heat dissipation area, achieving a high energy density of 145Wh / kg while meeting the high strength and high safety design requirements of the system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of a high-energy-density marine battery module according to an embodiment of the present invention; Figure 2This is a schematic diagram of the structure of a high-energy-density marine battery module in one embodiment of the present invention. Figure 3 This is a schematic diagram of the battery cell assembly in one embodiment of the present invention.

[0019] In the diagram, 1. Heat dissipation shell; 101. Corrugated wave structure; 1011. Long groove; 2. Battery cell assembly; 201. Ternary battery cell; 202. Aerogel; 203. Series support; 3. Thermally conductive silicone; 4. Upper fixing plate; 5. Lower fixing plate. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0021] It should be noted that the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used in the application's product, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a number of technical features. "A plurality" means two or more, unless otherwise explicitly defined. "Several" means one or more, unless otherwise explicitly defined.

[0022] Please see Figures 1 to 3This embodiment provides a high-energy-density marine battery module, including a heat dissipation shell 1 and several sets of battery cell groups 2 arranged side-by-side within the heat dissipation shell 1. The heat dissipation shell 1 is made of aluminum alloy. Each set of battery cell groups 2 includes multiple ternary lithium battery cells 201 arranged side-by-side. The energy density of the ternary lithium battery cells 201 is 145Wh / kg. Thermally conductive silicone 3 is provided between the top of each set of battery cell groups 2 and the heat dissipation shell 1. The upper and lower surfaces of the heat dissipation shell 1 are provided with an integrally formed corrugated wave structure 101. By providing thermally conductive silicone 3 between the top of each set of battery cell groups 2 and the heat dissipation shell 1, in conjunction with the aluminum alloy heat dissipation shell 1, the heat generated by the battery cell groups 2 can be quickly conducted to the outside, improving the overall heat dissipation efficiency and preventing heat accumulation that could lead to thermal runaway. By providing corrugated wave structures 101 on both the upper and lower surfaces of the heat dissipation shell 1, the corrugated wave structures 101 can not only significantly improve the overall strength of the heat dissipation shell 1, but also increase the surface area of ​​the heat dissipation shell 1, thereby increasing the contact area between the heat dissipation shell 1 and the external environment, which can further improve the heat dissipation efficiency of the heat dissipation shell 1, and more effectively conduct the heat generated by the battery cell pack 2 to the outside, avoiding the accumulation of heat inside the battery module and reducing the risk of thermal runaway.

[0023] This utility model uses a high-rate, high-energy-density ternary battery cell 201, combined with a lightweight aluminum alloy heat sink shell 1 with high heat dissipation performance and strong corrosion resistance, to achieve the ultimate lightweight of the module. At the same time, by setting a corrugated wave structure 101 on the surface of the heat sink shell 1, the overall strength of the heat sink shell 1 is greatly enhanced, while also increasing the surface heat dissipation area. Under the requirement of high strength and high safety of the system, a high energy density of 145Wh / kg is achieved.

[0024] In one embodiment, the ternary lithium battery cell 201 is a ternary blade battery cell. Blade-shaped cells can be arranged side-by-side and closely within the heat dissipation housing 1, making full use of the space within the heat dissipation housing and arranging more cells in a limited space, thereby increasing the total capacity of the battery module and further improving energy density. It should be noted that the ternary lithium battery cell 201 can be other shapes besides blade shapes, and this invention does not limit its shape.

[0025] Please see Figure 1 , Figure 2In one embodiment, the surface of the corrugated wave structure 101 is provided with a plurality of elongated grooves 1011 arranged side by side along its short side, and the direction of the elongated grooves 1011 is consistent with the direction of the long side of the corrugated wave structure 101. The arrangement of the elongated grooves 1011 not only further increases the surface area of ​​the heat dissipation shell 1, but also changes the stress distribution of the heat dissipation shell 1 to a certain extent. Without adding too much weight, it enhances the overall strength of the corrugated wave structure 101, enabling the heat dissipation shell 1 to better withstand various external impacts that may be encountered during ship navigation, thereby improving the safety and reliability of the battery module.

[0026] In one embodiment, the battery cell group 2 is provided in two groups, each group comprising fifteen ternary lithium-ion cells 201. By employing high-energy-density ternary lithium-ion cells 201 and providing two groups of cell groups 2, each with fifteen ternary lithium-ion cells 201, more electrical energy can be stored within a limited battery module space, meeting the needs of long-range ship voyages and achieving higher energy density, thus providing more sustained power support for the ship. Of course, in other embodiments, the battery cell group 2 may also be provided in one, three, or more groups, and the number of ternary lithium-ion cells 201 in each group may be increased or decreased according to actual power supply requirements, such as twenty-three. This invention does not impose any limitations on this.

[0027] Please see Figure 1 In one embodiment, the tops of all the cell groups 2 are fixed by an upper fixing plate 4, and thermally conductive silicone 3 is disposed between the cell groups 2 and the upper fixing plate 4. The upper fixing plate 4 is in contact with the heat dissipation shell 1, and the bottoms of all the cell groups 2 are fixed by a lower fixing plate 5. By fixing the tops of all the cell groups 2 with the upper fixing plate 4 and the bottoms with the lower fixing plate 5, a stable support structure is provided for the cell groups 2, avoiding wiring connection problems caused by cell group 2 displacement. By placing the thermally conductive silicone 3 between the cell groups 2 and the upper fixing plate 4, and with the upper fixing plate 4 in contact with the heat dissipation shell 1, the heat generated by the cell groups 2 during operation is first conducted to the upper fixing plate 4 through the thermally conductive silicone 3, then conducted to the heat dissipation shell 1 by the upper fixing plate 4, and finally dissipated into the external environment. This fully utilizes the good thermal conductivity of the thermally conductive silicone 3, enabling rapid heat transfer from the cell groups 2, preventing heat accumulation inside the cell groups 2, effectively reducing the temperature of the ternary lithium cell 201, and improving the performance and safety of the entire battery module.

[0028] Please see Figure 3In one embodiment, two adjacent ternary battery cells 201 are separated by aerogel 202. Aerogel 202 has excellent heat insulation and high temperature resistance properties. Filling the space between adjacent ternary battery cells 201 with aerogel 202 forms a physical heat insulation barrier, which can prevent direct heat conduction between ternary battery cells 201 and effectively suppress the spread of thermal runaway between ternary battery cells 201.

[0029] Please see Figure 3 In one embodiment, the ternary lithium-ion cells 201 of each cell group 2 are connected by a series support 203, and adjacent cell groups 2 are separated by the series support 203. Connecting the ternary lithium-ion cells 201 within each cell group 2 by the series support 203 ensures that the relative positions of the ternary lithium-ion cells 201 are fixed, making the overall structure of the cell group 2 more stable. During the use of marine battery modules, they may be affected by ship swaying and vibration. A stable connection can prevent the ternary lithium-ion cells 201 from shifting or colliding due to swaying, reducing the risk of damage to the ternary lithium-ion cells 201 and improving the reliability and service life of the battery module. Since adjacent cell groups 2 are separated by the series support 203, a certain physical interval is formed, which can effectively block heat conduction and heat radiation between cell groups 2. When a cell group 2 experiences thermal runaway, it can reduce the impact of high temperature on adjacent cell groups 2, reduce the risk of thermal runaway spreading throughout the module, and further improve the safety of the marine battery module.

[0030] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0031] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A high energy density marine battery module, characterized by, The device includes a heat dissipation shell and several sets of battery cells arranged side by side within the heat dissipation shell. Each set of battery cells includes multiple ternary batteries arranged side by side. Thermally conductive silicone is provided between the top of each set of battery cells and the heat dissipation shell. The upper and lower surfaces of the heat dissipation shell are provided with an integrally formed corrugated wave structure.

2. The high energy density marine battery module of claim 1, wherein, The heat dissipation shell is made of aluminum alloy.

3. The high energy density marine battery module of claim 2, wherein, The surface of the corrugated wave structure is provided with a number of long grooves arranged side by side along its short side, and the direction of the long grooves is consistent with the direction of the long side of the corrugated wave structure.

4. The high energy density marine battery module of claim 1, wherein, The battery cell assembly is provided in two sets.

5. The high energy density marine battery module of claim 1, wherein, Each group of cells comprises fifteen ternary cells.

6. The high energy density marine battery module of claim 1, wherein, The energy density of the ternary lithium battery cell is 145Wh / kg.

7. The high energy density marine battery module of claim 1, wherein, The tops of all the battery cell assemblies are secured by an upper fixing plate.

8. The high energy density marine battery module of claim 1, wherein, The bottom of all the battery cell assemblies is fixed by a lower fixing plate.

9. The high energy density marine battery module of claim 1, wherein, The two adjacent ternary cells are separated by aerogel.

10. The high energy density marine battery module of claim 1, wherein, Each ternary battery cell in each group of the battery cells is connected by a series support, and adjacent groups of the battery cells are separated by the series support.

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