A lithium battery device for an electric ship

Abstract

The present invention relates to the technical field of lithium batteries, and specifically provides a lithium battery device for an electric ship, including a box body. The box body includes an upper box cover and a lower box body. The upper box cover and the lower box body are detachably connected by a buckle. A sealing rubber ring is provided at the connection between the upper box cover and the lower box body. A fireproof material is provided on the inner wall of the box body; a pressure relief device is arranged on the side wall of the box body through a first pipe structure, and a first refractory special-shaped part is provided on the inner wall of the first pipe structure; a through hole is also provided on the side wall of the box body, and the through hole is connected to an external pipeline. A plugging material is provided in the through hole. The fireproof material is a fiber layer, and the fiber layer includes a fiber blanket and a fiber board. The present invention has the advantages of simple structure, safe and convenient use, and good fireproof and heat insulation effects.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and particularly to a lithium battery device on a ship. Background Art

[0002] Lithium batteries are widely used in various industries and have gradually become one of the main power sources in the transportation industry. The energy consumption of ship shipping is mainly the diesel consumption of transport ships, and the fuels consumed are diesel and fuel oil. With the improvement of ship emission standards and the efforts of countries around the world to save energy and reduce emissions, the application scope of new green energy in ships is gradually expanding. Lithium batteries, with their relatively low price, high energy density, and easy maintenance, have gradually become the focus of attention. Ship emissions are relatively serious. Electrification can solve the pollution problem on the one hand and is also more economical. Ship electrification is the general trend.

[0003] From the application situation of lithium batteries in the prior art, lithium iron phosphate and ternary lithium batteries account for the mainstream of power batteries. Due to the characteristics of the cathode material, ternary lithium batteries are more likely to trigger thermal runaway during use compared to other lithium-ion batteries. After thermal runaway, a large amount of heat is released, and combustible and toxic gases are released while a large amount of oxygen is released, making them more flammable, explosive, and posing a safety hazard. The cathode material lithium iron phosphate in lithium iron phosphate batteries is thermally stable at high temperatures and is relatively difficult to decompose. It has the advantages of high temperature resistance, strong safety stability, and better cycle performance in actual use, but there is still a relatively large risk of thermal runaway, which may lead to ship fires or even explosions. With the emergence of large-capacity storage batteries and their booming development on land, major classification societies have taken notice. The requirement that only lead-acid batteries or alkaline nickel-plated batteries can be used as marine storage batteries has gradually been broken, and the application of lithium batteries on ships is gradually increasing.

[0004] Although the application of lithium batteries on ships is getting better and better, the safety performance of lithium batteries in the prior art is poor. In particular, there is no requirement for A60 (the fire protection rating of Class A for 60 minutes on ships) in terms of fire prevention. This greatly restricts the application of lithium batteries on fiberglass boats, wooden boats, and composite material ships. Currently, considering safety performance, the fire prevention problem of lithium batteries remains an issue that needs to be continuously considered. Summary of the Invention

[0005] The purpose of the present invention is to provide a lithium battery device for an electric ship to solve the above technical problems;

[0006] A lithium battery device for an electric ship includes a box body (1). The box body (1) includes an upper box cover (11) and a lower box body (12). The upper box cover (11) and the lower box body (12) are detachably connected by a buckle (2). A sealing rubber ring (3) is provided at the connection between the upper box cover (11) and the lower box body (12). A fireproof material (4) is provided on the inner wall of the box body (1);

[0007] A pressure relief device (5) is provided on the side wall of the box body (1) through a first pipe structure (51), and a first refractory special-shaped member (53) is provided on the inner wall of the first pipe structure (51);

[0008] A through hole (6) is further provided on the side wall of the box body (1), the through hole (6) is connected to an external pipeline, and a sealing material (63) is provided in the through hole (6).

[0009] Preferably, the fireproof material (4) is a fiber layer, the fiber layer includes a fiber blanket (41) and a fiber board (42), the fiber blanket (41) is provided on the inner side wall and the top of the box body (1), the fiber board (42) is adhered to the bottom of the box body (1) through a refractory adhesive, and a right-angle card for fixing is provided on the side of the fiber board (42).

[0010] Preferably, the fiber blanket (41) is fixed to the inner wall of the box body (1) through a quick card, a protective coating is applied to the connection part of the quick card and the box body (1), and the protective coating is applied to the circular card in the quick card.

[0011] Preferably, the sealing rubber ring (3) is deformably provided between the upper box cover (11) and the lower box body (12), the bottom of the upper box cover (11) is flush with the sealing rubber ring (3), and the sealing rubber ring (3) is a refractory sealing rubber ring (3).

[0012] Preferably, the fiber blanket (41) includes an upper fiber blanket (411) provided on the upper box cover (11) and a lower fiber blanket (412) provided on the lower box body (12), and an intumescent fireproof sealant is applied to the connection part of the upper fiber blanket (411), the lower fiber blanket (412) and the sealing rubber ring (3).

[0013] Preferably, the snap fasteners (2) that cooperate with each other are provided on the outer side walls of the upper box cover (11) and the lower box body (12).

[0014] Preferably, the pressure relief device (5) includes:

[0015] The first pipe structure (51) with internal threads runs through the side wall of the box body (1);

[0016] A pressure relief valve (52) with external threads is connected to the external port of the first pipe structure (51);

[0017] The first refractory special-shaped member (53) is provided on the inner wall of the first pipe structure (51), and an intumescent fireproof coating is applied inside the first refractory special-shaped member (53).

[0018] Preferably, a fireproof fiber paper (54) is provided at the inner port of the first pipe structure (51), and the fireproof fiber paper (54) is adhered to the fiber blanket (41) by the refractory adhesive;

[0019] Preferably, a second pipe structure (61) is provided in the through hole (6), a second refractory special-shaped member (62) is provided on the inner wall of the second pipe structure (61), and the blocking material (63) is poured inside the second refractory special-shaped member (62).

[0020] Preferably, a handle (7) is provided on the top of the upper box cover (11).

[0021] Advantages of the present invention: Due to the above technical solutions, the present invention has the advantages of simple structure, safe and convenient use, and good fireproof and heat insulation effects. Description of the Drawings

[0022] Figure 1 Schematic diagram of the external structure of the lithium battery device in the embodiment of the present invention;

[0023] Figure 2 Cross-sectional view of the lithium battery device in the embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the buckle in the embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the sealing rubber ring in the embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the connection of the sealing rubber ring in the embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the structure of the pressure relief device in the embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the structure of the first refractory special-shaped member in the embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the structure of the through hole in the embodiment of the present invention;

[0030] Figure 9 Schematic diagram of the structure of the second refractory special-shaped member in the embodiment of the present invention.

[0031] In the accompanying drawings: 1. Box body; 11. Upper box cover; 12. Lower box body; 2. Buckle; 3. Sealing rubber ring; 4. Fireproof material; 41. Fiber blanket; 42. Fiber board; 411. Upper fiber blanket; 412. Lower fiber blanket; 5. Pressure relief device; 51. First pipe structure; 52. Pressure relief valve; 53. First refractory special-shaped part; 54. Fiber paper; 6. Through hole; 61. Second pipe structure; 62. Second refractory special-shaped part; 63. Plugging material; 7. Handle. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0034] Next, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0035] A lithium battery device for an electric ship, as Figure 1 , Figure 2 and Figure 3 shown, includes a box body 1. The box body 1 includes an upper box cover 11 and a lower box body 12. The upper box cover 11 and the lower box body 12 are detachably connected by a buckle 2. As Figure 4 shown, a sealing rubber ring 3 is provided at the connection between the upper box cover 11 and the lower box body 12, and a fireproof material 4 is provided on the inner wall of the box body 1;

[0036] As Figure 6 shown, it further includes a pressure relief device 5, which is arranged on the side wall of the box body 1 through a first pipe structure 51, and a first refractory special-shaped part 53 is provided on the inner wall of the first pipe structure 51; the pressure relief device 5 can prevent the fireproof failure caused by the deformation of the box body 1 due to excessive pressure when a huge amount of gas is generated by the explosion and combustion of the lithium battery in the box.

[0037] As Figure 1 and Figure 8 shown, a through hole 6 is further provided on the side wall of the box body 1. The through hole 6 is connected to an external BMS pipeline, and a plugging material 63 is provided in the through hole 6.

[0038] Specifically, the lithium battery device in the present invention is a lithium battery box or cabinet for ships. Through the A60 fireproof material 4 and the sealing material 63 inside the box body 1, the overall A60 fireproof grade required by the classification society is achieved. Through the sealing components in the box body 1 and the sealing material 63 in the through holes, the overall function of achieving the IP67 waterproof grade is formed;

[0039] Specifically, the material of the box body 1 is metal or non-metal. In this embodiment, the box body 1 is preferably made of 0.8 - 1 mm stainless steel or 0.8 - 2 mm marine aluminum-magnesium alloy plate, but is not limited to the above-mentioned metal or non-metal plates. In specific embodiment one, a 1 mm thick stainless steel plate is selected; in embodiment two, a 2 mm thick marine aluminum-magnesium alloy plate 5083H116 is selected.

[0040] In a preferred embodiment, the fireproof material 4 is fixed to the inner wall of the box body 1 by quick cards. The connection part between the quick cards and the box body 1 is coated with a protective coating, and the circular cards inside the quick cards are coated with a protective coating. In this embodiment, the preferred protective coating is a ceramic protective coating or a fireproof coating.

[0041] Specifically, the A60 fireproof material 4 on the four walls and the top of the box body 1 uses a 50 mm thick 80 kg / m 3 ceramic fiber blanket or soluble environmental protection fiber blanket. The fiber blanket is fixed by quick cards. After the fiber blanket 41 is fixed, a fireproof coating or a ceramic protective coating is brushed on the internal circular cards of the quick cards to form the optimal heat insulation effect.

[0042] Specifically, the fireproof material 4 is a fireproof material 4 that meets the A60 fireproof grade and is arranged on the four walls, the bottom, and the top of the box body 1.

[0043] In a preferred embodiment, the fireproof material 4 is a fiber layer, and the fiber layer includes a fiber blanket 41 and a fiber board 42. The fiber blanket 41 is arranged on the inner side walls and the top of the box body 1, and the fiber board 42 is adhered to the bottom of the box body 1 by a refractory adhesive. Right-angle cards for fixing are provided on the side of the fiber board 42; in this embodiment, preferably, the A60 fireproof material 4 uses a ceramic fiber layer, specifically a ceramic fiber blanket 41 and a ceramic fiber board 42, which have the advantages of low thermal conductivity and low price. The thickness of the fiber layer is 10 - 50 mm; preferably, the four walls and the top of the box body 1 use a 40 - 50 mm thick fiber blanket 41, and the bottom uses a 10 mm - 20 mm thick fiber board 42.

[0044] Specifically, in this embodiment, a 15 mm thick inorganic fiber board 42 is used, adhered with a refractory adhesive, and fixed with 90-degree right-angle cards on the four sides of the inorganic fiber board 42.

[0045] In a preferred embodiment, the fiber blanket 41 includes an upper fiber blanket 411 disposed on the upper cover 11 and a lower fiber blanket 412 disposed on the lower box body 12.

[0046] In a preferred embodiment, as Figure 4 and Figure 5 shown, the sealing rubber ring 3 is deformably disposed between the upper cover 11 and the lower box body 12. The bottom of the upper fiber blanket 411 is flush with the sealing rubber ring 3, and the sealing rubber ring 3 is a refractory sealing rubber ring 3.

[0047] Preferably, the sealing rubber ring 3 is a black flame-retardant organic refractory rubber ring, which can form a certain concave-convex shape. The bottom end of the upper cover 11 is flush with the sealing rubber ring 3. The docking parts of the upper fiber blanket 411, the lower fiber blanket 412 and the sealing rubber ring 3 are coated with intumescent fireproof sealant to form a sealing barrier.

[0048] In a preferred embodiment, please continue to refer to Figure 2 shown, mating buckles 2 are provided on the outer sidewalls of the upper cover 11 and the lower box body 12. In this embodiment, preferably 8 adjustable stainless steel or aluminum alloy buckles 2 are used. The buckles 2 lock the upper cover 11 and the lower box body 12, together with the sealing rubber ring 3 between the upper cover 11 and the lower box body 12 to form a waterproof setting.

[0049] In a preferred embodiment, please refer to Figure 6 and Figure 7 shown, the pressure relief device 5 includes:

[0050] A first pipe structure 51 with internal threads, which penetrates through the side wall of the box body 1. Preferably, the first pipe structure 51 is a stainless steel pipe or an aluminum alloy pipe;

[0051] The external port of the first pipe structure 51 is sleeved with a pressure relief valve 52 with external threads. Preferably, the pressure relief valve 52 is made of stainless steel or aluminum alloy. The inner wall of the first pipe structure 51 is sleeved with a first refractory special-shaped part 53, and the inside of the first refractory special-shaped part 53 is coated with intumescent fireproof coating; specifically, the wall thickness of the first refractory special-shaped part 53 is 5 mm - 15 mm. In this embodiment, preferably, the first refractory special-shaped part 53 with a wall thickness of 10 mm is used, and the expansion multiple of the intumescent fireproof coating is more than 15 times.

[0052] In a preferred embodiment, a fireproof fiber paper 54 is provided at the internal port of the first pipe structure 51, and the fireproof fiber paper 54 is adhered to the fiber blanket 41 through a refractory adhesive;

[0053] Specifically, the fireproof fiber paper 54 is a 2-mm-thick ceramic fiber paper with an intumescent fireproof coating with a thickness of 1 mm, and is adhered to the fiber blanket 41 with a fire rating of A60 through a high-temperature adhesive. In the event of an extreme high pressure, the high-pressure gas with temperature breaks through the fireproof fiber paper 54, and exhausts through the top pressure relief valve 52. At the same time, in the case of high temperature, the intumescent fireproof coating continuously expands to seal the first refractory special-shaped part 53 to form a secondary heat barrier, forming an overall fire protection.

[0054] In a preferred embodiment, please refer to Figure 8 and Figure 9 As shown, a second pipe structure 61 is provided in the through hole 6. A second refractory special-shaped part 62 is provided on the inner wall of the second pipe structure 61, and a sealing material 63 is poured inside the second refractory special-shaped part 62; preferably, the sealing material 63 of the battery box adopts a fireproof and waterproof sealing material to form a waterproof seal with an IP67 waterproof rating and a sealing function with an A60 fire rating.

[0055] Specifically, the second pipe structure 61 is welded in the through hole 6. Preferably, the second pipe structure 61 is a stainless steel pipe or an aluminum alloy pipe. A second refractory special-shaped part 62 with a wall thickness of 10 mm is sleeved inside the second pipe structure 61. Preferably, the sealing material 63 adopts silicone fireproof sealant, two-component bottom plate sealing fireproof material 4 or other similar fireproof two-component sealing materials. After the inlet and outlet pipelines are arranged in the through hole 6, the through hole 6 is sealed by pouring with the sealing material 63.

[0056] In a preferred embodiment, a handle 7 is provided on the top of the upper box cover 11 for convenient hand-held or power lifting. Preferably, the handle 7 is a semi-circular handle 7 made of stainless steel or aluminum alloy.

[0057] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery device for an electric ship, characterized in that, it includes a box body (1), the box body (1) includes an upper box cover (11) and a lower box body (12), the upper box cover (11) and the lower box body (12) are detachably connected by a buckle (2), a sealing rubber ring (3) is provided at the connection between the upper box cover (11) and the lower box body (12), and a fireproof material (4) is provided on the inner wall of the box body (1); A pressure relief device (5), including: A first pipe structure (51) with internal threads, passing through the side wall of the box body (1); A pressure relief valve (52) with external threads, connecting to the external port of the first pipe structure (51); A first refractory special-shaped part (53), provided on the inner wall of the first pipe structure (51), and an intumescent fireproof coating is applied inside the first refractory special-shaped part (53); A through hole (6) is also provided on the side wall of the box body (1), the through hole (6) is connected to an external pipeline, and a plugging material (63) is provided in the through hole (6); The fireproof material (4) is a fiber layer, the fiber layer includes a fiber blanket (41) and a fiber board (42), the fiber blanket (41) is provided on the inner side wall and the top of the box body (1), the fiber blanket (41) is fixed to the inner wall of the box body (1) by quick cards, a protective coating is applied to the connection part between the quick cards and the box body (1), a protective coating is applied to the circular cards inside the quick cards, the fiber board (42) is adhered to the bottom of the box body (1) by a refractory adhesive, and a right-angled card for fixing is provided on the side of the fiber board (42).

2. The lithium battery device according to claim 1, characterized in that, the sealing rubber ring (3) is deformably provided between the upper box cover (11) and the lower box body (12), the bottom of the upper box cover (11) is flush with the sealing rubber ring (3), and the sealing rubber ring (3) is a refractory sealing rubber ring (3).

3. The lithium battery device according to claim 2, characterized in that, the fiber blanket (41) includes an upper fiber blanket (411) provided on the upper box cover (11) and a lower fiber blanket (412) provided on the lower box body (12), and an intumescent fireproof sealant is applied to the connection between the upper fiber blanket (411), the lower fiber blanket (412) and the sealing rubber ring (3).

4. The lithium battery device according to claim 1, characterized in that, mating buckles (2) are provided on the outer side walls of the upper box cover (11) and the lower box body (12).

5. The lithium battery device according to claim 1, characterized in that, a fireproof fiber paper (54) is provided at the internal port of the first pipe structure (51), and the fireproof fiber paper (54) is adhered to the fiber blanket (41) by the refractory adhesive.

6. The lithium battery device according to claim 1, characterized in that, A second pipe structure (61) is provided in the through hole (6), a second refractory special-shaped member (62) is provided on the inner wall of the second pipe structure (61), and the plugging material (63) is poured inside the second refractory special-shaped member (62).

7. The lithium battery device according to claim 1, characterized in that, a handle (7) is provided on the top of the upper box cover (11).

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