Sodium ion battery module

Abstract

The utility model belongs to the technical field of lithium battery processing, and particularly relates to a sodium ion battery module which comprises battery cells, a heat-conducting silica gel sheet, an insulating protective sheet, EVA foam, a metal plate surrounding plate, a connecting bar and a plastic steel plate, and the heat-conducting silica gel sheet is arranged between the battery cells; the insulating protection sheets are arranged on the upper, lower, left and right surfaces of the battery cell; the metal plate coaming is of a U-shaped structure and wraps the left side, the right side and the bottom surface of the battery cell; eVA foam is arranged between the metal plate coaming and the left and right surfaces of the battery cell; the connecting bar is arranged at the top of the battery cell and exposes the tabs, and EVA foam is also arranged between the connecting bar and the insulating protection sheet at the top of the battery cell; the plastic steel plates surround the periphery of the sodium ion battery module to form a peripheral protection structure, and simple and efficient connection of components in the module is realized by optimizing the structural design, so that the mounting convenience is ensured; and meanwhile, by adopting advanced materials and processes, the safety performance of the module is improved, and various strict requirements in practical application are met.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery processing technology, specifically relating to a sodium-ion battery module. Background Technology

[0002] With the rapid development of 5G base station construction, the demand for efficient, stable, and long-lasting energy storage has increased dramatically. Against this backdrop, lithium batteries, due to their high energy density and long cycle life, have become the mainstream choice in the current energy storage field. In recent years, through continuous research and innovation, lithium batteries have made significant progress in performance improvement and safety assurance, providing solid energy support for numerous high-tech applications.

[0003] However, despite numerous achievements, lithium batteries still face a series of pressing technical challenges and limitations in practical applications, as follows:

[0004] High cost: Especially in the pursuit of high performance, high density, and high safety standards, the complexity of lithium battery material selection and manufacturing processes has increased significantly, resulting in persistently high overall costs. This not only limits the widespread application of lithium batteries but also poses a challenge to cost control in the new energy industry.

[0005] Safety performance needs optimization: If the heat generated by lithium batteries during operation cannot be effectively dissipated, it can easily lead to heat buildup, which may trigger thermal runaway or even fire. Although various heat dissipation technologies and thermal management strategies have been proposed, how to further improve the safety and stability of batteries while ensuring their performance remains a key focus of current research.

[0006] The environmental impact cannot be ignored: the production and recycling of lithium batteries generate a certain amount of waste gas, wastewater, and solid waste. If not properly handled, this will have a negative impact on the ecological environment. As the application scale of lithium batteries expands, the environmental footprint throughout their entire life cycle is becoming increasingly prominent, urgently requiring the development of more environmentally friendly battery technologies. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, this application provides a sodium-ion battery module, which aims to achieve simple and efficient connection of internal components through optimized structural design, ensuring convenient installation; at the same time, by adopting advanced materials and processes, it improves the safety performance of the module and meets various stringent requirements in practical applications.

[0008] The technical means adopted by this utility model to solve its technical problem is as follows: a sodium-ion battery module, the improvement of which is that it includes a battery cell, a thermally conductive silicone sheet, an insulating protective sheet, EVA foam, a sheet metal enclosure, a connecting strip, and a plastic steel plate. The thermally conductive silicone sheet is disposed between the battery cells; the insulating protective sheet is disposed on the top, bottom, left, and right sides of the battery cell; the sheet metal enclosure has a "U"-shaped structure, wrapping around the left and right sides and bottom of the battery cell; the EVA foam is disposed between the sheet metal enclosure and the left and right sides of the battery cell; the connecting strip is disposed on the top of the battery cell and exposes the electrode tabs, and the EVA foam is also disposed between the connecting strip and the insulating protective sheet on the top of the battery cell; the plastic steel plate surrounds the sodium-ion battery module to form an outer protective structure.

[0009] The thermally conductive silicone sheet described in the above technical solution has a preset thermal conductivity to ensure that the heat generated by the battery cell during operation can be effectively dissipated.

[0010] The insulating protective sheet described in the above technical solution is made of a material that is resistant to high temperatures and has high insulation performance.

[0011] The EVA foam described in the above technical solution has a predetermined compression rate and resilience rate to adapt to the slight deformation of the battery cell under different usage conditions.

[0012] The sheet metal panel described in the above technical solution is provided with ventilation holes or heat sink structure.

[0013] The connecting bar described in the above technical solution is connected to the battery cell tab by laser welding, bolt connection or crimping.

[0014] The surface of the plastic steel plate described in the above technical solution is coated with an anti-corrosion, wear-resistant or antistatic coating.

[0015] The module described in the above technical solution also includes a battery management system, which is used to monitor battery status, control the charging and discharging process, and provide fault warning and protection functions.

[0016] The beneficial effects of this invention are: by optimizing the structural design, simple and efficient connection of the internal components of the module is achieved, ensuring convenient installation; at the same time, by adopting advanced materials and processes, the safety performance of the module is improved, meeting various stringent requirements in practical applications. Furthermore, this design also considers the environmental impact of sodium-ion batteries throughout their life cycle, striving to reduce adverse environmental impacts while ensuring performance, providing a more economical, safe, and environmentally friendly solution for the new energy storage field. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a sodium-ion battery module according to an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of a sodium-ion battery module according to an embodiment of the present invention. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0021] In view of the aforementioned technical bottlenecks, this utility model aims to propose an innovative sodium-ion battery module. This solution aims to achieve simple and efficient connection of internal components through optimized structural design, ensuring convenient installation. Simultaneously, by employing advanced materials and processes, it enhances the module's safety performance, meeting the stringent requirements of practical applications. Furthermore, this design will consider the environmental impact of sodium-ion batteries throughout their lifecycle, striving to minimize adverse environmental impacts while ensuring performance, thus providing a more economical, safe, and environmentally friendly solution for the new energy storage field.

[0022] like Figure 1-2 As shown, this application provides a sodium-ion battery module, including a battery cell 1, a thermally conductive silicone sheet 2, an insulating protective sheet 3, EVA foam 4, a sheet metal enclosure 5, a connecting strip 6, and a plastic steel plate 7, wherein:

[0023] The thermally conductive silicone sheet 2 is disposed between the battery cells 1 to promote heat conduction between the battery cells 1;

[0024] The insulating protective sheet 3 is disposed on the top, bottom, left, and right sides of the battery cell 1 to provide electrical isolation protection;

[0025] The sheet metal enclosure 5 has a "U" shaped structure, which wraps around the left and right sides and bottom of the battery cell 1 to enhance the structural strength and electromagnetic shielding capability of the module.

[0026] EVA foam 4 is provided between the sheet metal enclosure 5 and the left and right sides of the battery cell 1 as a shock-absorbing buffer layer.

[0027] The connecting strip 6 is located on the top of the battery cell 1 and exposes the tabs to facilitate connection with external circuits. The EVA foam 4 is also provided between the connecting strip 6 and the insulating protective sheet 3 on the top of the battery cell 1 to ensure electrical insulation while providing additional cushioning.

[0028] The plastic steel plate 7 is arranged around the sodium-ion battery module to form an outer protective structure, enhancing the overall impact resistance and protection level of the module.

[0029] In one possible implementation, the thermally conductive silicone sheet 2 has a preset thermal conductivity to ensure that the heat generated by the battery cell 1 during operation can be effectively dissipated.

[0030] In one possible implementation, the insulating protective sheet 3 is made of a high-temperature resistant and high-insulation material to ensure good electrical isolation even under high-temperature or short-circuit conditions of the battery module.

[0031] In one possible implementation, the EVA foam 4 has a predetermined compression ratio and resilience to accommodate the minute deformation of the battery cell under different usage conditions.

[0032] In one possible implementation, the sheet metal enclosure 5 is provided with ventilation holes or heat sink structures to promote the discharge of heat inside the module and improve heat dissipation efficiency.

[0033] In one possible implementation, the connecting strip 6 is connected to the battery cell tab by laser welding, bolting, or crimping to ensure a reliable electrical connection.

[0034] In one possible implementation, the surface of the plastic steel sheet 7 is coated with an anti-corrosion, wear-resistant, or antistatic coating to enhance its service life and performance.

[0035] In one possible implementation, the module also includes a battery management system for monitoring battery status, controlling the charging and discharging process, and providing fault warning and protection functions to achieve precise battery management.

[0036] This invention utilizes laser welding technology to connect battery modules, significantly enhancing the connection strength and precision of internal components. This ensures the consistency and stability of the module during charging and discharging. Furthermore, laser welding technology reduces the defects that may arise from traditional laser welding, further improving the module's safety performance and lowering the risk of failure due to poor laser welding.

[0037] Optimized thermal management and enhanced heat dissipation efficiency: The module design innovatively reserves gaps between cells. This design not only facilitates airflow between cells but also greatly promotes the rapid dissipation of heat, effectively reducing the temperature rise of the module during operation, extending battery life, and improving the overall system's thermal safety.

[0038] Reducing costs and promoting the application of sodium-ion batteries: The module design of this application adopts sodium-ion cells, which are more economical than traditional lithium-ion batteries. Compared with traditional lithium-ion batteries, this not only reduces material costs but also broadens the application scope of sodium-ion batteries in energy storage and electric vehicles, which is of great significance to promoting the sustainable development of the new energy industry.

[0039] Enhanced structural strength and simplified installation and maintenance: The module adopts an integrated structural design. By optimizing the internal structural layout and material selection, the overall structural strength of the module is significantly improved, enabling it to better resist external impacts and vibrations and ensuring long-term operational reliability. At the same time, the integrated design simplifies the installation process, reduces the number of required parts, making the installation process faster and more efficient. Subsequent maintenance and upkeep are also simpler and more convenient, reducing operation and maintenance costs.

[0040] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A sodium-ion battery module, characterized in that, This includes battery cells, thermally conductive silicone sheets, insulating protective sheets, EVA foam, sheet metal enclosures, connectors, and PVC panels. The thermally conductive silicone pad is disposed between the battery cells; The insulating protective sheet is disposed on the top, bottom, left, and right sides of the battery cell; The sheet metal enclosure has a "U" shaped structure, which wraps around the left and right sides and the bottom of the battery cell; The EVA foam is provided between the sheet metal enclosure and the left and right sides of the battery cell; The connecting bar is disposed on the top of the battery cell and exposes the tabs, and the EVA foam is also disposed between the connecting bar and the insulating protective sheet on the top of the battery cell; The plastic steel plate surrounds the sodium-ion battery module, forming an outer protective structure.

2. The sodium-ion battery module according to claim 1, characterized in that, The thermally conductive silicone pad has a preset thermal conductivity to ensure that the heat generated by the battery cell during operation can be effectively dissipated.

3. The sodium-ion battery module according to claim 1, characterized in that, The insulating protective sheet is made of a material that is resistant to high temperatures and has high insulation performance.

4. The sodium-ion battery module according to claim 1, characterized in that, The EVA foam has a predetermined compression ratio and resilience to accommodate the minute deformation of the battery cell under different usage conditions.

5. The sodium-ion battery module according to claim 1, characterized in that, The sheet metal panel is provided with ventilation holes or heat sink structure.

6. The sodium-ion battery module according to claim 1, characterized in that, The connecting bar is connected to the battery cell tab by laser welding, bolt connection or crimping.

7. The sodium-ion battery module according to claim 1, characterized in that, The surface of the plastic steel sheet is coated with an anti-corrosion, wear-resistant, or antistatic coating.

8. The sodium-ion battery module according to any one of claims 1 to 7, characterized in that, The module also includes a battery management system for monitoring battery status, controlling the charging and discharging process, and providing fault warning and protection functions.

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