Energy storage battery for shipboard use

Abstract

The utility model discloses a kind of energy storage batteries for staying on ship in the technical field of battery, including high-temperature composite shell and upper cover, the high-temperature composite shell upper surface both ends are provided with terminal, for electric energy transmission, the high-temperature composite shell and upper cover sealing combination form battery;Pole group, the pole group is composed of multiple positive and negative units, the pole group is arranged in high-temperature composite shell interior.The utility model is made by battery shell using high-temperature composite material, pole plate uses lead calcium high-tin alloy grid, high specific gravity antioxidant active substance, high-temperature curing process, electrolyte uses the manufacturing process of gel electrolyte, can obtain better heat resistance and deep cycle capability.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an energy storage battery. Background Technology

[0002] Shipboard energy storage batteries are an important component of a ship's electrical system. They play a crucial role in both normal operation and emergency situations, providing stable power support for numerous onboard devices during navigation and berthing.

[0003] Current technologies still have the following problems: the marine environment is complex, and high temperature is a key factor affecting the performance and lifespan of lead-acid batteries. In traditional lead-acid batteries, water in the electrolyte easily evaporates under high temperatures, leading to water loss, which in turn affects the internal chemical reactions of the battery, causing a decrease in battery capacity and a shortened cycle life. Furthermore, thermal runaway is prone to occur at high temperatures, leading to battery bulging, leakage, and even fire, seriously threatening ship safety. Therefore, a marine energy storage battery with excellent heat resistance and deep cycle capability is of significant practical importance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a marine energy storage battery, solving the problems mentioned in the background technology.

[0005] The purpose of this utility model is achieved as follows: a storage battery for shipboard use, comprising...

[0006] A high-temperature composite housing and a top cover, wherein terminals are provided at both ends of the upper surface of the high-temperature composite housing for power transmission, and the high-temperature composite housing and the top cover are sealed together to form a battery;

[0007] The electrode group consists of multiple sets of positive and negative units and is disposed inside the high-temperature composite shell.

[0008] The high-temperature composite shell has an internal electrolyte cavity for injecting electrolyte.

[0009] Furthermore, the positive and negative units include a lead-calcium-high tin alloy grid, and a dense oxide film layer is formed on the outer surface of the lead-calcium-high tin alloy grid, thereby the lead-calcium-high tin alloy grid and the dense oxide film layer are combined to form a positive electrode plate and a negative electrode plate.

[0010] Furthermore, the positive and negative plates are electrically connected to two sets of terminals, respectively.

[0011] Furthermore, the electrode group also includes two sets of busbars, which are symmetrically arranged at the upper part of the high-temperature composite shell. The two sets of busbars are electrically connected to two sets of terminals respectively, so that both the positive electrode plate and the negative electrode plate are electrically connected to the terminals through the busbars.

[0012] Furthermore, both the positive and negative plates are wrapped with a separator, which is located between the positive and negative plates, and multiple sets of the positive and negative plates are stacked on top of each other.

[0013] Furthermore, the high-temperature composite shell has a mounting hole in the middle of its upper surface that communicates with the interior, and an exhaust valve is installed inside the mounting hole.

[0014] According to one embodiment of this disclosure, by using high-temperature composite materials for the high-temperature composite casing of the marine energy storage battery, it has high impact resistance, heat resistance, etc.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The grid of the electrode plate of this utility model is made of high tin alloy, which can form a dense oxide film on the grid surface, effectively resisting the corrosion of electrolyte and external environment, significantly extending the service life of the grid, reducing the risk of grid damage and battery failure caused by corrosion, and allowing the battery to work stably in complex environments. At the same time, the high tin content has better conductivity, reduces resistance, and makes current transmission more efficient during battery charging and discharging, reducing energy loss and improving battery charging and discharging efficiency. On the other hand, it can enhance the stability of the grid structure, reduce the shedding of active material from the electrode plate, and enable the battery to maintain a high capacity retention rate after multiple deep cycles, extending the overall deep cycle life of the battery. The high apparent gravity and oxidation-resistant active material can avoid softening and water loss of active material when the battery is used under high temperature conditions. Furthermore, the electrode plate adopts a high temperature curing process, which can effectively form 4BS, which can optimize battery performance and extend service life.

[0017] The electrolyte is a colloidal electrolyte, which improves the conductivity and stability of the electrolyte, enabling the battery to maintain good charge and discharge performance during deep cycling.

[0018] The above-mentioned technical optimizations and improvements can effectively improve the battery's heat resistance and deep cycle capability, meeting the needs of energy storage batteries in complex environments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2This is a schematic diagram of the working mode of the water loss test battery weight change of the storage battery for shipboard use according to this utility model.

[0022] Figure 3 This is a schematic diagram of the cycle life test curve of the energy storage battery of this utility model.

[0023] Figure 4 This is a schematic diagram of the lead-calcium-high tin alloy grid structure of this utility model.

[0024] Figure 5 This is a schematic diagram of the dense oxide film structure of this utility model.

[0025] The components include: 1. High-temperature composite shell; 2. Top cover; 3. Terminal; 4. Exhaust valve; 5. Positive electrode plate; 6. Negative electrode plate; 7. Separator; 8. Busbar; 9. Electrode group; 10. Lead-calcium-high tin alloy grid; and 11. Dense oxide film layer. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5 The illustrated marine energy storage battery includes

[0028] The high-temperature composite housing 1 and the top cover 2 are provided with terminals 3 at both ends of the upper surface of the high-temperature composite housing 1 for power transmission. The high-temperature composite housing 1 and the top cover 2 are sealed together to form a battery.

[0029] The pole group 9 is composed of multiple positive and negative units and is located inside the high-temperature composite shell 1.

[0030] The high-temperature composite shell 1 has an electrolyte cavity inside for injecting electrolyte.

[0031] Preferably, the high-temperature composite shell 1 can be made of high-temperature composite material, such as PC / ABS alloy material, and the battery shell is made by injection molding process. The shell thickness is generally 3~8mm to ensure good heat insulation and mechanical strength. In this solution, the thickness of the high-temperature composite shell is 6.5~7mm and the thickness of the top cover is 4.5~5mm.

[0032] Among them, the high-temperature composite shell 1 is made of high-temperature composite material, which has high impact resistance and heat resistance.

[0033] It should be noted that the upper cover 2 and the high-temperature composite shell 1 are sealed together and then liquefied to form a battery.

[0034] Preferably, a colloidal electrolyte is used. To prepare the electrolyte, concentrated sulfuric acid and deionized water are mixed in a specific ratio, and then stannous sulfate, sodium sulfate, silica sol, and a colloidal solution are added and stirred. After cooling the prepared electrolyte to room temperature, it is slowly injected into the battery, with the electrolyte level controlled within a specified range.

[0035] It is worth noting that by using a colloidal electrolyte, the conductivity and stability of the electrolyte can be improved, enabling the battery to maintain good charge and discharge performance during deep cycling.

[0036] Furthermore, the positive and negative units include a lead-calcium high-tin alloy grid 10, and a dense oxide film layer 11 is formed on the outer surface of the lead-calcium high-tin alloy grid 10. Thus, the lead-calcium high-tin alloy grid 10 and the dense oxide film layer 11 are combined to form a positive electrode plate 5 and a negative electrode plate 6. The positive electrode plate 5 and the negative electrode plate 6 are electrically connected to two sets of terminals 3 respectively.

[0037] Preferably, both the positive electrode plate 5 and the negative electrode plate 6 mentioned above can be made into grids by casting a lead-calcium high-tin alloy, filled with active material, and then cured and dried to form the electrode plates. The grid tin content is 1.5%, the apparent specific gravity of the active material is 4.55~4.6g / cm3, and the antioxidant additives are vanillin and aviation engine oil. The high-temperature curing temperature is 70~85℃. The prepared electrode plates are assembled in an alternating positive and negative manner, and a tight assembly technology is adopted to ensure that the spacing between the electrode plates is uniform and tight, reducing vibration and displacement.

[0038] Among them, the grids of the positive plate 5 and the negative plate 6 mentioned above are made of high tin alloy, which can form a dense oxide film layer 11 on the grid surface, effectively resisting the corrosion of electrolyte and external environment, greatly extending the grid service life, reducing the risk of grid damage and battery failure caused by corrosion, and allowing the battery to work stably in complex environments. At the same time, the high tin content has better conductivity, reduces resistance, and makes current transmission more efficient during battery charging and discharging, reducing energy loss and improving battery charging and discharging efficiency. On the other hand, it can enhance the stability of the grid structure, reduce the shedding of active material from the plates, and enable the battery to maintain a high capacity retention rate after multiple deep cycles, thus extending the overall deep cycle life of the battery.

[0039] Furthermore, the high apparent density and antioxidant properties of the active material can prevent the softening and water loss of the active material when the battery is used under high temperature conditions. As a result, the plate adopts a high temperature curing process, which can effectively form 4BS, optimize battery performance and extend service life.

[0040] Furthermore, the electrode group 9 also includes two sets of busbars 8, which are symmetrically arranged inside the upper part of the high-temperature composite shell 1, and the two sets of busbars 8 are electrically connected to two sets of terminals 3 respectively, so that the positive electrode plate 5 and the negative electrode plate 6 are electrically connected to the terminals 3 through the busbars 8.

[0041] Furthermore, both the positive electrode plate 5 and the negative electrode plate 6 are wrapped with a separator 7, and the separator 7 is located between the positive electrode plate 5 and the negative electrode plate 6. Multiple sets of positive electrode plates 5 and negative electrode plates 6 are stacked on top of each other.

[0042] Furthermore, a mounting hole communicating with the interior is provided in the middle of the upper surface of the high-temperature composite shell 1, and an exhaust valve 4 is provided inside the mounting hole.

[0043] Through the designed exhaust valve 4, and exhaust valve 4 from Figure 1 As can be seen from the design, it is centered. Therefore, when the internal air pressure of the high-temperature composite shell 1 is too high, the exhaust valve 4 can effectively relieve the pressure inside the high-temperature composite shell 1. Thus, the centered design allows for better gas discharge.

[0044] The above-mentioned technical optimizations and improvements can effectively improve the battery's heat resistance and deep cycle capability, meeting the needs of energy storage batteries in complex environments.

[0045] After completing the above steps, the battery undergoes formation and charge-discharge treatment to obtain a novel marine energy storage battery. The following testing methods are used:

[0046] 1. Water loss: After the battery is fully charged, wipe the entire surface of the battery clean, dry it and weigh it. Then charge the battery at a constant voltage of 2.4V / cell for 500 hours at an ambient temperature of 40℃±3℃. After the battery is fully charged, weigh it and calculate the mass loss caused by the reduction of electrolyte.

[0047] 2. Cycle life test: Keep the ambient temperature of the battery between 20~25℃. a. Discharge the battery with a current of I10A until the voltage of a single cell reaches 1.80V; b. Limit the voltage to 2.35V / cell and charge with 2.5I10A for 12 hours; c. Repeat steps a and b.

[0048] Test results: Water loss was 0.35 g / Ah, which is less than the national standard of 2 g / Ah; after 400 cycles, the capacity was still around 95%.

[0049] In summary, the marine energy storage battery of this invention uses high-temperature composite materials for the casing, lead-calcium-high-tin alloy grids for the plates, active materials with high apparent density and antioxidant properties, a high-temperature curing process, and a colloidal electrolyte manufacturing process. This results in better heat resistance and deep cycle capability, providing a reliable energy storage solution for ships and having broad market application prospects.

[0050] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A storage battery for shipboard use, characterized in that: include A high-temperature composite housing (1) and a top cover (2) are provided. Terminals (3) are provided at both ends of the upper surface of the high-temperature composite housing (1) for power transmission. The high-temperature composite housing (1) and the top cover (2) are sealed together to form a battery. The pole group (9) is composed of multiple positive and negative units and is disposed inside the high-temperature composite shell (1). The high-temperature composite shell (1) has an electrolyte cavity inside for injecting electrolyte.

2. The energy storage battery for shipboard use according to claim 1, characterized in that: The positive and negative units include a lead-calcium high-tin alloy grid (10), and a dense oxide film layer (11) is formed on the outer surface of the lead-calcium high-tin alloy grid (10). Thus, the lead-calcium high-tin alloy grid (10) and the dense oxide film layer (11) are combined to form a positive electrode plate (5) and a negative electrode plate (6).

3. A marine energy storage battery according to claim 2, characterized in that: The positive electrode plate (5) and the negative electrode plate (6) are electrically connected to two sets of terminals (3), respectively.

4. A marine energy storage battery according to claim 3, characterized in that: The electrode group (9) also includes two sets of busbars (8). The two sets of busbars (8) are symmetrically arranged at the upper part of the high-temperature composite shell (1), and the two sets of busbars (8) are electrically connected to the two sets of terminals (3) respectively, so that the positive electrode plate (5) and the negative electrode plate (6) are electrically connected to the terminals (3) through the busbars (8).

5. A marine energy storage battery according to claim 4, characterized in that: Both the positive electrode plate (5) and the negative electrode plate (6) are wrapped with a partition plate (7), and the partition plate (7) is located between the positive electrode plate (5) and the negative electrode plate (6). Multiple sets of the positive electrode plate (5) and the negative electrode plate (6) are stacked on top of each other.

6. A marine energy storage battery according to claim 5, characterized in that: The high-temperature composite shell (1) has an installation hole in the middle of its upper surface that communicates with the interior, and an exhaust valve (4) is installed inside the installation hole.

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