CN-224232731-U - Battery pack structure of solid sodium battery

CN224232731UCN 224232731 UCN224232731 UCN 224232731UCN-224232731-U

Abstract

The utility model discloses a battery pack structure of a solid sodium battery, which comprises an outer box assembly, a heat preservation assembly, an inner box assembly, a plurality of heat preservation layers, a heater, a heat insulation assembly, a battery cell assembly and a total busbar lead-out assembly, wherein the heat preservation assembly is arranged in the outer box assembly, the inner box assembly is arranged in the heat preservation assembly, the battery cell assembly is arranged in the inner box assembly, the heat insulation assembly, the heater and the plurality of heat preservation layers are sequentially arranged at the top of the battery cell assembly and are arranged in the outer box assembly, and the total busbar lead-out assembly is arranged on the surface of the battery cell assembly and is electrically connected with the battery cell assembly.

Inventors

ZHANG FULI
YU ZHENJIANG
DAI FEIXIONG
LIANG CHUNXIAO
LI WEIWEI
WANG YING

Assignees

超威电源集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250327

Claims (10)

1. The battery pack structure of the solid sodium battery is characterized by comprising an outer box assembly, a heat preservation assembly, an inner box assembly, a plurality of heat preservation layers, a heater, a heat insulation assembly, a battery cell assembly and a total busbar leading-out assembly; The heat preservation assembly is arranged in the outer box assembly, the inner box assembly is arranged in the heat preservation assembly, the battery cell assembly is arranged in the inner box assembly, the heat insulation assembly, the heater and the plurality of heat preservation layers are sequentially arranged at the top of the battery cell assembly and are arranged in the outer box assembly, and the total busbar leading-out assembly is arranged on the surface of the battery cell assembly and is electrically connected with the battery cell assembly.
2. The battery pack structure of a solid sodium battery according to claim 1, wherein the battery cell assembly comprises a plurality of battery cells, a rear insulating plate, side insulating plates, an interval insulating plate, a bottom insulating plate and rear elastic high-temperature-resistant heat-insulating cotton, wherein the side insulating plates are fixedly arranged on two sides of the bottom insulating plate, the bottom of the rear insulating plate is fixedly connected with the bottom insulating plate, the two sides of the rear insulating plate are fixedly connected with the side insulating plate, the rear elastic high-temperature-resistant heat-insulating cotton is arranged on the back surface of the rear insulating plate, a hollow square structure in the opening of the top and the front is formed, the battery cells are arranged in the square structure, and the interval insulating plate is arranged among the battery cells.
3. The battery pack structure of the solid sodium battery according to claim 1, wherein the total busbar leading-out assembly comprises an insulating ceramic block, an anode busbar, a cathode busbar and an insulating layer assembly, the insulating layer assembly is arranged on the surface of the cell assembly, the insulating ceramic block is arranged on the insulating layer assembly, the anode busbar and the cathode busbar are arranged on the insulating ceramic block, and the anode busbar and the cathode busbar are further electrically connected with the anode and the cathode of the cell assembly.
4. The battery pack structure of a solid sodium battery according to claim 1, wherein the outer case assembly comprises an upper cover and a lower case, the lower case is arranged below the upper cover and fixedly connected with the upper cover, and a sealing strip is further arranged between the upper cover and the lower case.
5. The battery pack structure of a solid state sodium battery according to claim 4, wherein the lower case surface is further provided with a plurality of welding screws, and the plurality of welding screws are connected with the BMS battery management system.
6. The battery pack structure of the solid sodium battery according to claim 1, wherein the heat insulation assembly and the heat insulation layers comprise heat insulation materials, the heat insulation materials are nano materials, the thickness of the heat insulation materials is 1 mm-200 mm, and the temperature resistance range is 25 ℃ to 1000 ℃.
7. The battery pack structure of a solid state sodium battery according to claim 1, wherein the heating plate is a high temperature resistant thin film type special heater.
8. The battery pack structure of a solid-state sodium battery according to claim 2, wherein the plurality of cells are N series-M parallel combined cells, where n=1 to 10, m=1 to 10.
9. The battery pack structure of a solid state sodium battery according to claim 4, wherein handles are provided on both sides of the lower case.
10. The battery pack structure of a solid sodium battery according to claim 4, wherein square holes are formed on the surfaces of the lower case, the heat-insulating assembly and the inner case assembly.

Description

Battery pack structure of solid sodium battery Technical Field The utility model relates to the technical field of battery packs, in particular to a battery pack structure of a solid sodium battery. Background The sodium-sulfur battery and the sodium salt battery have the advantages of high safety, high specific energy, high charge and discharge efficiency, low cost and the like, and are excellent electrochemical energy storage power supplies. The sodium-sulfur battery is a high-temperature sodium battery, is a molten salt battery formed by liquid sodium and sulfur, has high energy density, high charge-discharge efficiency and long cycle life, is manufactured by adopting cheap and nontoxic materials, and is mainly applied to stationary energy storage. The sodium salt battery is also one of high-temperature sodium batteries, has the characteristics of stable product property, high safety (intrinsically safe battery core), long service life, wide application range, easily obtained and nontoxic raw materials, simple waste recovery process and no pollution, and has been applied to 25 countries worldwide to build energy storage projects such as solar energy, wind power combination, peak management, communication base stations and the like. The main reasons for limiting the development of sodium-sulfur batteries at present are safety, but the main reasons for limiting the development of sodium-sulfur batteries are cost and maintainability, easy air leakage of a vacuum heat-insulating layer, high temperature requirement in use and the like. Therefore, it is urgently needed to solve the cost problem, the reliability problem and the like of the high-temperature sodium battery, and the product series can be formed, which is beneficial to popularization and application of the product. In view of the problems in the related art, the present utility model provides a battery pack structure of a solid-state sodium battery. Disclosure of utility model The utility model aims at overcoming the defects of the prior art and provides a battery pack structure of a solid sodium battery. In order to achieve the above purpose, the present utility model adopts the following technical scheme: the battery pack structure of the solid sodium battery comprises an outer box assembly, a heat preservation assembly, an inner box assembly, a plurality of heat preservation layers, a heater, a heat insulation assembly, a battery cell assembly and a total busbar leading-out assembly; The heat preservation assembly is arranged in the outer box assembly, the inner box assembly is arranged in the heat preservation assembly, the battery cell assembly is arranged in the inner box assembly, the heat insulation assembly, the heater and the plurality of heat preservation layers are sequentially arranged at the top of the battery cell assembly and are arranged in the outer box assembly, and the total busbar leading-out assembly is arranged on the surface of the battery cell assembly and is electrically connected with the battery cell assembly. Further, the electric core assembly includes a plurality of electric cores, back insulation board, side insulation board, interval insulation board, bottom insulation board and rear portion elasticity high temperature resistant heat preservation cotton, equal fixed mounting in bottom insulation board both sides has side insulation board, the bottom and the bottom insulation board fixed connection of back insulation board, and the both sides and the side insulation board fixed connection of back insulation board, and the cotton setting of rear portion elasticity high temperature resistant heat preservation is in the back of the back insulation board, and then forms top, the inside hollow square structure of front portion opening, and a plurality of electric cores all set up in square structure, and the interval insulation board sets up between a plurality of electric cores. The total busbar lead-out assembly comprises an insulating ceramic block, an anode busbar, a cathode busbar and an insulating layer assembly, wherein the insulating layer assembly is arranged on the surface of the cell assembly, the insulating ceramic block is arranged on the insulating layer assembly, the anode busbar and the cathode busbar are arranged on the insulating ceramic block, and the anode busbar and the cathode busbar are electrically connected with the anode and the cathode of the cell assembly. Further, the outer box assembly comprises an upper cover and a lower box body, wherein the lower box body is arranged below the upper cover and fixedly connected with the upper cover, and a sealing strip is further arranged between the upper cover and the lower box body. Further, the surface of the lower box body is also provided with a plurality of welding screws, and the welding screws are connected with the BMS battery management system. Further, the heat-insulating assembly and the heat-insulating layers comprise heat-insulating materials