Light anti-swelling thermal battery

Abstract

The utility model relates to a light anti-swelling thermal battery, which solves the problem of swelling of a high-mass-ratio-power thermal battery in long-time working and improves the working reliability and safety of the thermal battery. Comprising a cover body and a shell bottom, the cover body is composed of a cover plate, binding posts and insulators, a *-shaped boss radiating from the center is designed on the inner side of the cover plate, six binding posts and two insulators are fixed to the *-shaped boss of the cover plate, and a *-shaped boss radiating from the center is designed on the inner side of the shell bottom. According to the utility model, the mass specific power of the thermal battery can be effectively improved, the swelling problem of the thermal battery during long-time work is avoided, and the safety of the thermal battery is improved.

Description

Technical Field

[0001] This utility model belongs to the field of thermal battery design, specifically relating to a lightweight, anti-bulging thermal battery. Background Technology

[0002] As a power source for weapon systems, thermal batteries have always been a focus of industry attention in terms of improving their power-to-weight ratio and safety.

[0003] High-power-density thermal batteries typically require extremely long operating times. During prolonged operation at high temperatures, the decomposition of internal electrode materials and unavoidable side reactions lead to the generation of large amounts of gas within the battery, increasing internal pressure. This can cause the battery cover and casing to bulge, crack, or even leak gas and liquid. Current solutions primarily address these issues by thickening the battery cover, casing, and casing, and adding black pads to mitigate the safety risks caused by increased internal gas pressure. However, this contradicts the requirements for high-power-density operation. Utility Model Content

[0004] This invention provides a lightweight, anti-bulging thermal battery, which solves the problem of bulging in high-power thermal batteries during long-term operation, thereby improving the reliability and safety of thermal battery operation.

[0005] This utility model is achieved through the following technical solution:

[0006] A lightweight, anti-bulging thermal battery includes a cover and a bottom shell. The cover consists of a cover plate, terminals, and insulators. The inner side of the cover plate is designed with a centrally radiating "*"-shaped protrusion. Six terminals and two insulators are fixed at the "*"-shaped protrusion of the cover plate. The inner side of the bottom shell is designed with a centrally radiating "*"-shaped protrusion.

[0007] The cover plate and the bottom of the shell are made of titanium alloy.

[0008] The height of the "*" type boss is equal to the thickness of the cover plate and the bottom of the shell.

[0009] The terminals are made of iron-nickel-cobalt glass-sealed alloy wire, and the insulators are glass powder sintered bodies.

[0010] This invention can effectively improve the specific power of thermal batteries while avoiding the swelling problem of thermal batteries during long-term operation, thus improving the safety of thermal batteries. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the front structure of the thermal battery cover;

[0012] Figure 2 This is a schematic diagram of the reverse side structure of the thermal battery cover;

[0013] Figure 3 This is a schematic diagram of the bottom structure of a thermal battery casing. Detailed Implementation

[0014] like Figure 1-3 As shown, this utility model is a lightweight, anti-bulging, and heat-resistant battery.

[0015] The lightweight thermal battery cover consists of a cover plate, a terminal post 1, and an insulator 2. The cover plate is made of titanium alloy and has an overall thickness of 2mm. The inner side is designed with a 2mm high "*" shaped protrusion.

[0016] The terminal block 1 is made of iron-nickel-cobalt glass-sealed alloy wire, and the insulator 2 is a glass powder sintered body. Six terminal blocks 1 and two insulators 2 are fixed to the 2mm "*" shaped protrusions on the cover plate.

[0017] The new lightweight thermal battery casing is made of titanium alloy, with an overall thickness of 2mm and a 2mm high "*" shaped protrusion on the inner side.

[0018] Advantages and positive effects of the lightweight, heat-resistant, and swelling-resistant battery described in this utility model:

[0019] 1. Lightweight anti-swelling battery safety design: While reducing the weight of the hot battery, it effectively prevents the hot battery from swelling, thereby improving the mass power ratio and safety of the hot battery.

[0020] 2. The new lightweight thermal battery cover design features a 2mm high "*" shaped protrusion on the inner side, which is equivalent to 6 reinforcing ribs. This strengthens the cover structure and provides a certain amount of space between the 6 reinforcing ribs. Gas generated by the thermal battery during long-term operation can move and compress within this space, avoiding instantaneous impact on the cover and providing a certain buffering effect. This prevents the cover from bulging during long-term operation of the thermal battery.

[0021] 3. The new lightweight thermal battery cover design has an outer diameter of 118.4mm and an inner boss width of 11mm. The thermal battery performance input and output terminals (6 terminals 1 and 2 insulators 2) are fixed to the cover plate using glass sintering technology. The thickness of the insulators here is 4mm, which makes reasonable use of space while ensuring the reliability of the thermal battery's electrical performance input and output.

[0022] 4. The new lightweight thermal battery cover design features an overall plate thickness of 2mm and a boss height of 2mm. It is made of titanium alloy and weighs approximately 141g. The traditional design uses stainless steel and has an overall plate thickness of 4mm, weighing approximately 335g. The new lightweight thermal battery cover design reduces the weight of the thermal battery cover by approximately 194g, which is approximately 57.9% lighter than the traditional design.

[0023] 5. The new lightweight thermal battery casing has an outer diameter of 118.8mm. The inner center of the casing has a 30mm diameter and 2mm high protrusion, surrounded by six 5mm wide and 2mm high protrusions. This reinforcing design strengthens the casing structure, and the space between the reinforcing ribs allows the gas generated by the thermal battery during long-term operation to move and compress within this space, avoiding instantaneous impact on the casing and providing a certain buffering effect. This prevents the casing from bulging during long-term operation.

[0024] 6. The new lightweight thermal battery casing bottom design features an overall plate thickness of 2mm and a boss height of 2mm. It is made of titanium alloy and weighs approximately 124g. The traditional design uses stainless steel and has an overall plate thickness of 4mm, weighing approximately 349g. The new lightweight thermal battery casing bottom design reduces the weight of the casing bottom by approximately 225g, which is approximately 64.5% lighter than the traditional design.

[0025] 7. The new lightweight thermal battery cover and shell bottom design reduces the weight of the thermal battery by approximately 419g, which is about 15.22% lighter than the traditional thermal battery, and improves the thermal battery's mass power ratio.

[0026] 8. The innovative technologies in the invention have a wide range of applications, not limited to a single thermal battery, but can be applied to many high-power, long-life thermal batteries.

Claims

1. A lightweight, anti-bulging, heat-resistant battery, comprising a cover and a bottom, wherein the cover consists of a cover plate, terminals, and insulators, characterized in that: The inner side of the cover plate is designed with a "*" shaped protrusion radiating from the center. Six terminals and two insulators are fixed at the "*" shaped protrusions on the cover plate. The inner side of the shell bottom is designed with a "*" shaped protrusion radiating from the center.

2. The lightweight anti-bulging thermal battery according to claim 1, characterized in that: The cover plate and the bottom of the shell are made of titanium alloy.

3. The lightweight anti-bulging thermal battery according to claim 1, characterized in that: The terminals are made of iron-nickel-cobalt glass-sealed alloy wire, and the insulators are glass powder sintered bodies.

4. A lightweight anti-bulging thermal battery according to claim 1, characterized in that: The height of the "*" type boss is equal to the thickness of the cover plate and the bottom of the shell.

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