Pack heat preservation structure based on liquid metal battery

Abstract

The utility model relates to battery heat preservation structure field discloses PACK heat preservation structure based on liquid metal battery, including battery shell, the inside of battery shell is provided with battery inner shell, the inside of battery inner shell is provided with a plurality of batteries, between every two adjacent batteries is provided with second soft heat insulation cotton, the lower end of a plurality of batteries and the lower inner wall of battery inner shell are provided with fourth hard heat insulation cotton, the upper end of a plurality of batteries is commonly provided with second hard heat insulation cotton. In the utility model, by using first hard heat insulation cotton, second hard heat insulation cotton, third hard heat insulation cotton and fourth hard heat insulation cotton cooperation, can improve the heat preservation performance of whole and reduce heat exchange, and first soft heat insulation cotton, second soft heat insulation cotton and third soft heat insulation cotton because it has certain softness, can guarantee that internal structure and heat insulation cotton are closely attached, reduce the gap, further strengthen the heat preservation performance of whole.

Description

Technical Field

[0001] This utility model relates to the field of battery insulation structure, and more particularly to PACK insulation structure based on liquid metal battery. Background Technology

[0002] Liquid metal batteries have received widespread attention in the energy storage field in recent years due to their high energy density, long cycle life, and excellent fast charge and discharge capabilities. However, liquid metal batteries have relatively strict requirements on temperature conditions during operation. Their operating temperature usually needs to be in a high-temperature environment of several hundred degrees Celsius to ensure good fluidity of the liquid metal electrodes and electrolytes inside the battery and the stability of electrochemical reactions. Therefore, how to effectively maintain the battery at the operating temperature and reduce heat loss has become a key problem that urgently needs to be solved in the application of liquid metal batteries.

[0003] Conventional battery modules are primarily lithium-ion batteries, and lithium-ion battery pack designs mainly focus on battery heat dissipation. Liquid metal batteries, on the other hand, require the battery to operate at high temperatures while minimizing heat dissipation. This necessitates careful consideration of the overall pack insulation and battery placement. Therefore, those skilled in the art have provided pack insulation structures based on liquid metal batteries to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a PACK insulation structure based on liquid metal batteries. This structure uses multiple soft and hard insulation cottons in combination, and distributes the internal heat evenly through a first heat-conducting plate and a second heat-conducting plate, thereby further enhancing the overall insulation performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PACK insulation structure based on a liquid metal battery, including a battery shell, an inner battery shell inside the battery shell, a plurality of batteries inside the inner battery shell, a second soft insulation cotton between each two adjacent batteries, a fourth hard insulation cotton between the lower end of the plurality of batteries and the lower inner wall of the inner battery shell, and a second hard insulation cotton shared at the upper end of the plurality of batteries. The battery casing is provided with a first rigid insulation cotton inside, and a first heat-conducting plate is provided inside the first rigid insulation cotton. A first soft insulation cotton is provided on the outside of the battery casing inside the first heat-conducting plate. A third soft insulation cotton is provided at the upper end of the first soft insulation cotton. A second heat-conducting plate is provided at the upper end of the third soft insulation cotton. A third rigid insulation cotton is provided at the upper end of the second heat-conducting plate. The above technical solution uses multiple soft and hard insulation cottons in combination, and the heat inside is evenly distributed through the first and second heat-conducting plates, which further enhances the overall insulation performance.

[0006] Furthermore, a casing cover is provided at the upper end of the battery casing, and the casing cover is fixedly connected to the battery casing by bolts; The above technical solution achieves a good sealing effect.

[0007] Furthermore, the first heat-conducting plate and the second heat-conducting plate are made of one of the following materials: copper, aluminum alloy, thermally conductive silicone, or thermally conductive engineering plastic. Through the above technical solutions, the above materials can all achieve good thermal conductivity, disperse the heat source, and avoid heat concentration.

[0008] Furthermore, the first rigid insulation cotton, the second rigid insulation cotton, the third rigid insulation cotton and the fourth rigid insulation cotton are made of one of ceramic fiber, rigid aluminum silicate, rigid foam plastic or glass fiber insulation cotton, respectively. Through the above technical solutions, the above materials all have a certain strength, which can provide both good thermal insulation and a certain degree of protection.

[0009] Furthermore, the first soft insulation cotton, the second soft insulation cotton, and the third soft insulation cotton are made of one of polyethylene, polyurethane, silicone foam, or microfiber insulation cotton, respectively. Through the above technical solutions, the above materials all have good heat insulation and softness, and can be selected according to the specific processing needs.

[0010] Furthermore, the battery casing and casing cover are both made of one of stainless steel, aluminum alloy, or composite materials; The above technical solutions allow for the selection of appropriate materials based on specific applications, and all of these materials possess good strength and comprehensive performance.

[0011] This utility model has the following beneficial effects: 1. In this utility model, by using a combination of first rigid insulation cotton, second rigid insulation cotton, third rigid insulation cotton and fourth rigid insulation cotton, the overall insulation performance can be improved and heat exchange can be reduced. The first soft insulation cotton, second soft insulation cotton and third soft insulation cotton, due to their certain softness, can ensure that the internal structure and the insulation cotton are tightly fitted together, reduce gaps, and further enhance the overall insulation performance.

[0012] 2. In this utility model, by setting the first heat-conducting plate and the second heat-conducting plate to be used in combination, the heat source distribution outside the entire PACK can be made more uniform. Attached Figure Description

[0013] Figure 1 This is an isometric view of the PACK insulation structure based on liquid metal battery proposed in this utility model. Figure 2 This is an isometric sectional view of the PACK insulation structure based on liquid metal battery proposed in this utility model. Figure 3 This is a front view of the PACK thermal insulation structure based on liquid metal battery proposed in this utility model; Figure 4 This is a side view of the PACK insulation structure based on liquid metal battery proposed in this utility model.

[0014] Legend: 1. Outer cover; 2. Battery casing; 3. First heat-conducting plate; 4. First rigid insulation cotton; 5. First soft insulation cotton; 6. Battery inner casing; 7. Battery; 8. Second soft insulation cotton; 9. Second rigid insulation cotton; 10. Second heat-conducting plate; 11. Third rigid insulation cotton; 12. Third soft insulation cotton; 13. Fourth rigid insulation cotton. Detailed Implementation

[0015] 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.

[0016] Reference Figure 1-4 An embodiment of this utility model provides a PACK thermal insulation structure based on a liquid metal battery, including a battery shell 2, an inner battery shell 6 inside the battery shell 2, a plurality of batteries 7 inside the inner battery shell 6, a second soft thermal insulation cotton 8 between each two adjacent batteries 7, a fourth hard thermal insulation cotton 13 between the lower end of the plurality of batteries 7 and the lower inner wall of the inner battery shell 6, and a second hard thermal insulation cotton 9 on the upper end of the plurality of batteries 7. The battery casing 2 has a first rigid insulation cotton 4 inside, a first heat-conducting plate 3 inside the first rigid insulation cotton 4, a first soft insulation cotton 5 outside the battery inner casing 6 inside the first heat-conducting plate 3, a third soft insulation cotton 12 above the first soft insulation cotton 5, a second heat-conducting plate 10 above the third soft insulation cotton 12, and a third rigid insulation cotton 11 above the second heat-conducting plate 10. By using the first rigid insulation cotton 4 and the second rigid insulation cotton 9... The third rigid insulation cotton 11 and the fourth rigid insulation cotton 13 are used together to improve the overall insulation performance and reduce heat exchange. The first soft insulation cotton 5, the second soft insulation cotton 8 and the third soft insulation cotton 12 have a certain degree of softness, which can ensure that the internal structure and the insulation cotton are tightly fitted together, reduce gaps and further enhance the overall insulation performance. By setting the first heat-conducting plate 3 and the second heat-conducting plate 10 to be used together, the external heat source distribution of the entire PACK can be made more uniform.

[0017] The upper end of the battery casing 2 is provided with a casing cover 1, which is fixedly connected to the battery casing 2 by bolts. The first heat-conducting plate 3 and the second heat-conducting plate 10 are made of copper, aluminum alloy, thermally conductive silicone or thermally conductive engineering plastic, respectively. The first rigid insulation cotton 4, the second rigid insulation cotton 9, the third rigid insulation cotton 11 and the fourth rigid insulation cotton 13 are made of ceramic fiber, rigid aluminum silicate, rigid foam plastic or glass fiber insulation cotton, respectively.

[0018] The first soft insulation cotton 5, the second soft insulation cotton 8, and the third soft insulation cotton 12 are made of polyethylene, polyurethane, silicone foam, or microfiber insulation cotton, respectively. The battery shell 2 and the shell cover 1 are made of stainless steel, aluminum alloy, or composite materials.

[0019] Working principle: This utility model is a PACK insulation structure based on liquid metal batteries. By using a combination of first rigid insulation cotton 4, second rigid insulation cotton 9, third rigid insulation cotton 11 and fourth rigid insulation cotton 13, the overall insulation performance can be improved and heat exchange reduced. The first soft insulation cotton 5, second soft insulation cotton 8 and third soft insulation cotton 12, due to their certain softness, can ensure a tight fit between the internal structure and the insulation cotton, reduce gaps, and further enhance the overall insulation performance. By setting the first heat-conducting plate 3 and the second heat-conducting plate 10 to work together, the external heat source distribution of the entire PACK can be made more uniform.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PACK thermal insulation structure based on a liquid metal battery, comprising a battery casing (2), characterized in that: The battery outer shell (2) is provided with a battery inner shell (6), and a plurality of batteries (7) are provided inside the battery inner shell (6). A second soft insulation cotton (8) is provided between each two adjacent batteries (7). A fourth hard insulation cotton (13) is provided between the lower end of the plurality of batteries (7) and the lower inner wall of the battery inner shell (6). A second hard insulation cotton (9) is provided at the upper end of the plurality of batteries (7). The battery casing (2) is provided with a first rigid insulation cotton (4) inside, and a first heat-conducting plate (3) is provided inside the first rigid insulation cotton (4). A first soft insulation cotton (5) is provided on the outside of the battery inner casing (6) inside the first heat-conducting plate (3). A third soft insulation cotton (12) is provided at the upper end of the first soft insulation cotton (5). A second heat-conducting plate (10) is provided at the upper end of the third soft insulation cotton (12). A third rigid insulation cotton (11) is provided at the upper end of the second heat-conducting plate (10).

2. The PACK thermal insulation structure based on a liquid metal battery according to claim 1, characterized in that: The upper end of the battery casing (2) is provided with a casing cover (1), and the casing cover (1) and the battery casing (2) are fixedly connected by bolts.

3. The PACK thermal insulation structure based on a liquid metal battery according to claim 1, characterized in that: The first heat-conducting plate (3) and the second heat-conducting plate (10) are made of one of the following materials: copper, aluminum alloy, thermally conductive silicone or thermally conductive engineering plastic.

4. The PACK thermal insulation structure based on a liquid metal battery according to claim 1, characterized in that: The first rigid thermal insulation cotton (4), the second rigid thermal insulation cotton (9), the third rigid thermal insulation cotton (11) and the fourth rigid thermal insulation cotton (13) are made of one of ceramic fiber, rigid aluminum silicate, rigid foam plastic or glass fiber thermal insulation cotton, respectively.

5. The PACK thermal insulation structure based on a liquid metal battery according to claim 1, characterized in that: The first soft insulation cotton (5), the second soft insulation cotton (8) and the third soft insulation cotton (12) are made of polyethylene, polyurethane, silicone foam or microfiber insulation cotton, respectively.

6. The PACK thermal insulation structure based on a liquid metal battery according to claim 1, characterized in that: The battery casing (2) and casing cover (1) are made of stainless steel, aluminum alloy or composite material.

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