A new intelligent dense temperature-sensing self-heating battery module structure

Abstract

A new intelligent dense temperature sensing self-heating battery module structure is proposed, which includes battery cell, welded aluminum row, epoxy resin plate, end baffle, side heat dissipation sealing plate, bottom plate and intelligent temperature sensing heating film. The positive and negative electrodes of the battery cell are arranged alternately in the horizontal direction. The welded aluminum row is connected in series with the positive and negative electrodes of the battery cell by welding. The epoxy resin plate is arranged between the end battery cell and the end baffle. The end baffle is connected with the side heat dissipation sealing plate and the bottom plate through the flange with mounting hole. The side heat dissipation sealing plate is provided with a flange structure and a long strip hollow structure. The end baffle, the side heat dissipation sealing plate and the bottom plate form a detachable sheet metal support. The intelligent temperature sensing heating film is in contact with the bottom plate and the battery cell. The intelligent temperature sensing heating film integrates temperature sensing contacts and control chips to achieve precise temperature control. The structure realizes efficient self-heating and precise temperature control, improves heat dissipation efficiency and structural stability, and is suitable for electric vehicles, energy storage equipment and other fields.

Description

Technical Field

[0001] This article belongs to the technical field of batteries, specifically involving a novel intelligent dense temperature-sensing self-heating battery module structure. Background Technology

[0002] In the battery field, the performance of battery modules (especially battery PACK products) is closely related to the operating temperature. Temperature, as one of the key factors affecting battery performance, has a significant impact on core indicators such as battery capacity, discharge efficiency, and cycle life.

[0003] Currently, most battery pack products on the market rely excessively on external temperature control systems to maintain the battery's operating temperature. This external control method has many limitations: on the one hand, external devices are often large and complex in structure, increasing the space and weight burden of the entire battery system, which is very unfavorable for some application scenarios with strict space and weight requirements (such as new energy vehicles); on the other hand, the response speed of external control is relatively slow, and it is difficult to quickly and accurately adjust the battery's operating temperature when the ambient temperature changes rapidly.

[0004] Especially in the cold winter, the ambient temperature drops significantly, and the negative impact of low temperature on batteries becomes more pronounced. Low temperatures cause a significant decrease in the rate of chemical reactions inside the battery, resulting in a noticeable reduction in battery capacity and a decrease in the amount of electrical energy that can be stored. At the same time, the battery's discharge efficiency also decreases significantly. During the discharge process, the energy output capability is limited and cannot meet the normal power requirements of the device. Long-term operation in low-temperature environments will also seriously damage the battery's cycle life, shorten the overall battery lifespan, greatly affect the battery's performance and user experience, and increase the cost of battery replacement.

[0005] Existing battery module structures lack effective autonomous temperature regulation capabilities when dealing with low-temperature environments, making it difficult to solve a series of problems caused by low temperatures and failing to provide a stable and suitable operating temperature environment for the battery, thus restricting the full utilization of battery performance. Therefore, it is urgent to design a new type of intelligent dense temperature-sensing self-heating sheet metal structure to improve the performance of battery modules in low-temperature environments and enhance the overall performance of the battery. Utility Model Content

[0006] To address the aforementioned issues, this paper proposes a novel intelligent, densely packed temperature-sensing self-heating battery module structure. This structure comprises battery cells, welded aluminum busbars, an epoxy resin plate, end baffles, side heat dissipation plates, a base plate, and an intelligent temperature-sensing heating film. The positive and negative electrodes of the battery cells are arranged alternately horizontally. A welded aluminum busbar is positioned above the battery cells, with both ends of the busbar connected in series with the positive and negative electrodes of the cells via welding. The epoxy resin plate is located between the side of the end battery cells and the end baffles. The end baffles are vertically connected to the side heat dissipation plates and the base plate. The intelligent temperature-sensing heating film is positioned above the base plate. The temperature-sensing heating film adheres tightly to the bottom of the battery cell, monitoring the cell's temperature changes in real time. When the cell temperature falls below a set threshold, the intelligent temperature-sensing heating film automatically heats up, uniformly releasing heat to provide a warm environment for the cell and effectively improving the chemical reaction rate of the battery under low-temperature conditions. At the same time, the power of the heating film can be dynamically adjusted according to the cell temperature to avoid overheating, which could lead to energy waste or damage to the cell. The side heat dissipation plate dissipates excess heat generated by the cell in a timely manner when the battery is working normally or when the heating film stops working, preventing heat accumulation from affecting battery performance. The side heat dissipation plate and the intelligent temperature-sensing heating film work together to maintain the battery module within a suitable operating temperature range.

[0007] The epoxy resin board is rectangular, and its dimensions are adapted to the dimensions of the side of the battery cell end. By using the epoxy resin board, which has good insulation properties and mechanical strength, it is placed between the side of the battery cell end and the end baffle. This not only provides effective insulation protection for the battery cell and prevents leakage between the end baffle and the battery cell, but also fixes and supports the battery cell to a certain extent, improving the stability of the battery cell inside the module and preventing the battery cell from shifting position due to shaking during use, which would affect the normal operation of the battery module.

[0008] The end baffle has folded edges on both sides and at the bottom, and each folded edge has a mounting hole. The end baffle is connected to the side heat dissipation plate through the mounting holes on the folded edges on both sides, and to the bottom plate through the mounting hole on the folded edge of the end baffle. The design of the folded edges and mounting holes forms a stable frame structure with the end baffle, the side heat dissipation plate and the bottom plate. This not only provides solid support for the battery module, but also dissipates heat from inside the battery cell through the extension direction of the folded edges. During installation, the precise positioning of the mounting holes ensures the assembly accuracy between the components, effectively avoiding structural deformation caused by loose connections, and further enhancing the structural stability of the entire battery module.

[0009] The side heat sink has a flanged structure on the bottom outer side and a hollow structure in the center. The hollow structure is a long strip of holes. The flanged structure on the bottom outer side of the side heat sink increases the contact area between the side heat sink and the base plate, improving the stability of the connection. It also strengthens the side heat sink to prevent deformation during use. The hollow structure reduces the thermal resistance of the heat sink itself and provides a channel for air circulation between the battery cell and the heat sink, preventing heat from accumulating in local areas. At the same time, the hollow structure also reduces the overall weight of the side heat sink, reducing the total mass of the battery module while ensuring structural strength.

[0010] The end baffles, side heat dissipation plates, and bottom plate are all made of sheet metal. The end baffles, side heat dissipation plates, and bottom plate are connected to form a detachable sheet metal bracket. The battery cell module is installed inside the sheet metal bracket. By using sheet metal, it has excellent mechanical strength and thermal conductivity, which can provide stable support for the battery cell module and help heat dissipate from the inside of the module to the external environment. At the same time, the detachable connection method makes it easy to disassemble and install the sheet metal bracket, which can quickly inspect or replace the internal battery cell module, effectively reducing maintenance costs and operation difficulty.

[0011] The intelligent temperature-sensing heating film is attached to the top of the base plate, with the heating surface facing the bottom surface of the battery cell and in contact with it. The intelligent temperature-sensing heating film integrates a temperature-sensing contact and a control chip. The temperature-sensing contact monitors the temperature change of the bottom of the battery cell in real time and transmits the temperature data to the control chip. The control chip analyzes and processes the data according to a preset temperature threshold. When it detects that the battery cell temperature is lower than the set operating temperature, it activates the heating function, causing the intelligent temperature-sensing heating film to heat up and transfer heat to the battery cell through contact with the bottom of the battery cell, thus achieving precise heating of the battery cell. After the battery cell temperature rises back to the normal operating temperature range, the control chip automatically cuts off the heating circuit to avoid overheating and affecting the battery cell performance. This intelligent control method not only ensures that the battery cell can quickly reach the ideal operating temperature in low-temperature environments, improving the low-temperature start-up performance and discharge efficiency of the battery module, but also effectively prevents the risk of thermal runaway caused by excessive temperature, further ensuring the safe and stable operation of the battery module.

[0012] Beneficial effects:

[0013] The intelligent temperature-sensing heating film is tightly attached to the bottom of the battery cell, monitoring the temperature changes of the cell in real time. When the cell temperature is lower than the set threshold, the intelligent temperature-sensing heating film automatically heats up, evenly releasing heat to provide a warm environment for the cell, effectively improving the chemical reaction rate of the battery under low temperature conditions. At the same time, the power of the heating film can be dynamically adjusted according to the cell temperature to avoid overheating, which could lead to energy waste or damage to the cell. The side heat dissipation plate dissipates excess heat generated by the cell in a timely manner when the battery is working normally or when the heating film is not working, preventing heat accumulation from affecting battery performance. The side heat dissipation plate and the intelligent temperature-sensing heating film work together to maintain the battery module within a suitable operating temperature range.

[0014] By using epoxy resin boards, which have good insulation properties and mechanical strength, and placing them between the side of the end cell and the end baffle, it can not only effectively insulate and protect the cell, preventing leakage between the end baffle and the cell, but also fix and support the cell to a certain extent, improving the stability of the cell inside the module and preventing the cell from shifting position due to shaking during use, thus affecting the normal operation of the battery module.

[0015] The design of the folded edges and mounting holes forms a stable frame structure with the end baffle, side heat dissipation plate and base plate. This not only provides solid support for the battery module, but also dissipates the heat inside the cell through the extension direction of the folded edges. During installation, the precise positioning of the mounting holes ensures the assembly accuracy between the components, effectively avoiding structural deformation caused by loose connections, and further enhancing the structural stability of the entire battery module.

[0016] The flanged structure on the outer bottom of the side heat sink increases the contact area between the side heat sink and the base plate, improving the stability of the connection. It also strengthens the side heat sink to prevent deformation during use. The hollow structure of the side heat sink reduces the thermal resistance of the sink itself and provides a channel for air circulation between the battery cell and the heat sink, preventing heat from accumulating in local areas. At the same time, the hollow structure also reduces the overall weight of the side heat sink, reducing the total weight of the battery module while ensuring structural strength.

[0017] By using sheet metal, it possesses excellent mechanical strength and thermal conductivity, providing stable support for the battery cell module and assisting in the dissipation of heat from the inside of the module to the external environment. At the same time, the detachable connection method facilitates the disassembly and installation of the sheet metal bracket, enabling quick inspection or replacement of the internal battery cell module, effectively reducing maintenance costs and operational difficulties.

[0018] The temperature sensor monitors the temperature changes at the bottom of the battery cell in real time and transmits the temperature data to the control chip. The control chip analyzes and processes the data according to a preset temperature threshold. When the cell temperature is detected to be lower than the set operating temperature, the heating function is activated, causing the intelligent temperature-sensing heating film to heat up and transfer heat to the cell through contact with the bottom of the cell, achieving precise heating of the cell. After the cell temperature rises back to the normal operating temperature range, the control chip automatically cuts off the heating circuit to avoid overheating from affecting the cell performance. This intelligent control method not only ensures that the cell can quickly reach the ideal operating temperature in low-temperature environments, improving the low-temperature start-up performance and discharge efficiency of the battery module, but also effectively prevents the risk of thermal runaway caused by excessive temperature, further ensuring the safe and stable operation of the battery module. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a novel intelligent, densely-type temperature-sensing, self-heating battery module structure.

[0020] Figure 2 This is a schematic diagram of a novel intelligent, densely-type temperature-sensing, self-heating battery module structure.

[0021] Figure 3 This is a schematic diagram of a sheet metal bracket for a novel intelligent, densely packed, temperature-sensing, self-heating battery module structure.

[0022] In the diagram: 1. Battery cell, 2. Welded aluminum busbar, 3. Epoxy resin board, 4. End baffle, 5. Side heat dissipation sealing plate, 6. Base plate, 7. Intelligent temperature sensing heating film. Detailed Implementation

[0023] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0024] 1. Battery cell, 2. Welded aluminum busbar, 3. Epoxy resin board, 4. End baffle, 5. Side heat dissipation sealing plate, 6. Base plate, 7. Intelligent temperature sensing heating film.

[0025] like Figure 1 , 2 As shown in Figure 3;

[0026] A novel intelligent, densely packed temperature-sensing self-heating battery module structure is disclosed. This structure comprises a battery cell 1, a welded aluminum busbar 2, an epoxy resin plate 3, an end baffle 4, a side heat dissipation sealing plate 5, a base plate 6, and an intelligent temperature-sensing heating film 7. The positive and negative electrodes of the battery cell 1 are arranged alternately horizontally. The welded aluminum busbar 2 is positioned above the battery cell 1, with both ends of the busbar 2 connected in series to the positive and negative electrodes of the battery cell 1 via welding. The epoxy resin plate 3 is located between the side of the end battery cell 1 and the end baffle 4. The end baffle 4 is perpendicularly connected to the side heat dissipation sealing plate 5 and the base plate 6. The intelligent temperature-sensing heating film 7 is positioned above the base plate 6. The epoxy resin plate 3 is rectangular, and its dimensions are adapted to the dimensions of the side of the end battery cell 1. The plate 4 has folded edges on both sides and the bottom, and each folded edge has a mounting hole. The end baffle 4 is connected to the side heat dissipation sealing plate 5 through the mounting holes on both sides of the folded edge, and the end baffle 4 is connected to the bottom plate 6 through the mounting hole on the bottom folded edge. The side heat dissipation sealing plate 5 has a flanged structure on the outer bottom side and a hollow structure in the center of the side heat dissipation sealing plate 5. The hollow structure is a long strip-shaped hole. The end baffle 4, the side heat dissipation sealing plate 5 and the bottom plate 6 are all made of sheet metal. The end baffle 4, the side heat dissipation sealing plate 5 and the bottom plate 6 are connected to each other to form a detachable sheet metal bracket. The battery cell module is set inside the sheet metal bracket. The intelligent temperature-sensing heating film 7 is attached to the top of the bottom plate 6, with the heating surface facing the bottom surface of the battery cell 1 and in contact with the bottom of the battery cell 1. The intelligent temperature-sensing heating film 7 integrates a temperature-sensing contact and a control chip.

[0027] Implementation example;

[0028] First, place the base plate 6 on a horizontal workbench, with the heating surface of the intelligent temperature-sensing heating film 7 facing upwards. Secure the intelligent temperature-sensing heating film 7 to the base plate 6 in the designated area using high-temperature resistant double-sided adhesive, ensuring a tight fit between the intelligent temperature-sensing heating film 7 and the base plate 6. Then, lead the wires of the intelligent temperature-sensing heating film 7 to the outside of the base plate 6 for easy connection to external circuits. Next, connect the end baffle 4 and the side heat dissipation sealing plate 5 to the base plate 6 through the mounting holes. Next, arrange the positive and negative terminals of the battery cells 1 alternately in a horizontal direction above the intelligent temperature-sensing heating film 7, ensuring uniform spacing between the cells. The bottom of the battery cell 1 should be in close contact with the intelligent temperature-sensing heating film 7. Place the welding aluminum busbar 2 above the battery cell 1, aligning one end of the welding aluminum busbar 2 with and welding it to the positive terminal of the previous battery cell 1. The other end is aligned with and soldered to the negative terminal of the next cell 1. Epoxy resin boards 3 are placed at both ends of the cell module. Finally, the assembled cell 1 is placed inside the sheet metal bracket, so that the cell 1 fits into the bracket. Then, the wires of the intelligent temperature-sensing heating film 7 are connected to the external test circuit for temperature control debugging: the working temperature range of the cell 1 is set to 10℃~30℃. When the test environment temperature is lower than 10℃, the temperature sensing contact collects the temperature signal of the cell 1 and transmits it to the control chip. The control chip starts the intelligent temperature-sensing heating film 7, which begins to heat the cell 1 and monitors the temperature change of the cell 1 in real time. When the temperature of the cell 1 rises to 30℃, the control chip automatically turns off the intelligent temperature-sensing heating film 7 and stops heating.

[0029] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A novel intelligent, densely packed, temperature-sensing, self-heating battery module structure, characterized in that, The aforementioned temperature-sensing self-heating battery module structure comprises a battery cell, a welded aluminum busbar, an epoxy resin plate, an end baffle, a side heat dissipation sealing plate, a base plate, and an intelligent temperature-sensing heating film. The positive and negative electrodes of the battery cell are arranged alternately in the horizontal direction. A welded aluminum busbar is provided above the battery cell. The two ends of the welded aluminum busbar are respectively connected in series with the positive and negative electrodes of the battery cell by welding. The epoxy resin plate is located between the side of the end battery cell and the end baffle. The end baffle is vertically connected to the side heat dissipation sealing plate and the base plate. The intelligent temperature-sensing heating film is located above the base plate.

2. The novel intelligent dense temperature-sensing self-heating battery module structure according to claim 1, characterized in that, The epoxy resin board is rectangular, and its dimensions are adapted to the side dimensions of the battery cell end.

3. The novel intelligent dense temperature-sensing self-heating battery module structure according to claim 1, characterized in that, The end baffle has folded edges on both sides and at the bottom, and each folded edge has a mounting hole. The end baffle is connected to the side heat dissipation sealing plate through the mounting holes on both sides of the folded edge, and the end baffle is connected to the bottom plate through the mounting hole on the bottom folded edge.

4. The novel intelligent dense temperature-sensing self-heating battery module structure according to claim 1, characterized in that, The side heat dissipation sealing plate has a flanged structure on the bottom outer side and a hollow structure in the center, which is a long strip-shaped hole.

5. The novel intelligent dense temperature-sensing self-heating battery module structure according to claim 1, characterized in that, The end baffle, side heat dissipation sealing plate and bottom plate are all made of sheet metal. The end baffle, side heat dissipation sealing plate and bottom plate are connected to each other to form a detachable sheet metal bracket. The battery cell module is set inside the sheet metal bracket.

6. The novel intelligent dense temperature-sensing self-heating battery module structure according to claim 1, characterized in that, The intelligent temperature-sensing heating film is attached to the top of the base plate, with the heating surface facing the bottom surface of the battery cell and in contact with the bottom of the battery cell. The intelligent temperature-sensing heating film integrates a temperature-sensing contact and a control chip.

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