Soft package battery cell public module

Abstract

This utility model provides a common module for soft-pack battery cells, including: a battery bracket, a pair of battery cells, a pair of tab brackets, and a pair of busbars. The battery bracket has an I-shaped cross-section, including a web and a pair of wing plates. The web has a heat dissipation space inside, and a pair of mounting spaces are formed on both sides of the web. The pair of battery cells are respectively installed in the pair of mounting spaces, and the battery cells are in contact with the web and the pair of wing plates, forming a three-sided heat conduction system. This allows heat from the large surface of the battery cell and the pair of ends to be simultaneously conducted to the pair of wing plates, achieving high-rate heat dissipation of the soft-pack battery, effectively reducing temperature rise and temperature difference between cells, and improving the temperature uniformity of the module. In addition, the heat dissipation space of the web can also mitigate the expansion force of the battery cells during charging and discharging, improving structural stability and heat diffusion efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell technology, and more specifically, relates to a common module for soft-pack battery cells. Background Technology

[0002] With the rapid development of new energy technologies, pouch cells, as a high-efficiency and flexible energy storage component, are widely used in various electronic devices and new energy vehicles. However, existing pouch cell module structures still have many problems in practical applications and urgently need improvement.

[0003] Existing module structures generally employ single-sided or partial contact heat conduction designs, lacking efficient heat diffusion channels. Under high-rate charge and discharge conditions, the battery generates significant internal heat, easily leading to excessive temperature rise and large temperature differences between the battery body and individual cells, which in turn causes performance degradation, shortened lifespan, and even the risk of thermal runaway.

[0004] During battery charging and discharging, pouch cells will expand in volume. Traditional module structures often lack effective pressure relief or energy absorption designs, making it difficult to withstand expansion stress over a long period of time, which can easily lead to module deformation or even damage to the cell itself.

[0005] In the current system assembly process, battery stacking is usually assembled by tooling, bonding and mechanical connection. The process is complicated, the assembly time is long and the efficiency is low. It is difficult to meet the needs of rapid production and large-scale assembly, which is not conducive to the standardization and promotion of battery modules or systems. Utility Model Content

[0006] The purpose of this invention is to provide a common module for soft-pack battery cells, which solves the problems of insufficient heat dissipation performance and weak anti-expansion ability of existing modules.

[0007] To achieve the above objectives, this utility model provides a common module for pouch cells, comprising:

[0008] A battery bracket, the cross-section of which is I-shaped, includes a web and a pair of wing plates, the web having a heat dissipation space inside, and a pair of mounting spaces formed on both sides of the web;

[0009] A pair of battery cells are respectively installed in a pair of installation spaces, and the battery cells are in contact with the web and the pair of wing plates. Both ends of the battery cells are connected to tabs.

[0010] A pair of electrode holders, the pair of electrode holders being connected to both ends of the battery holder, and the outer side of the electrode holders being provided with mounting grooves;

[0011] A pair of busbars, the busbars being installed in the mounting slot and connected to the tabs.

[0012] Optionally, the web includes: a first plate and a second plate, the first plate and the second plate being arranged in parallel, and the heat dissipation space being formed between the first plate and the second plate.

[0013] Optionally, the heat dissipation space is provided with multiple pressure relief plates, one side of which is connected to plate one, and the other side of which is connected to plate two.

[0014] Optionally, multiple pressure relief plates are arranged alternately at an angle.

[0015] Optionally, a pair of connecting components are provided on the outer side of the electrode bracket, one end of the connecting component is provided with a socket, the other end of the connecting component is provided with a pin, and the connecting component is arranged along the thickness direction of the battery bracket.

[0016] Optionally, the mounting groove has a pair of first buckles at both ends, and the busbar is engaged between the pair of first buckles.

[0017] Optionally, the inner side of the electrode bracket is provided with a plurality of second buckles, and the web plate is provided with a plurality of slots, wherein the second buckles engage with the slots.

[0018] Optionally, the inner side of the tab bracket is provided with a pair of positioning plates, and the heat dissipation space is provided with four positioning slots, and the positioning plates are inserted into the positioning slots.

[0019] Optionally, the tab has an L-shaped cross-section and includes a first tab and a second tab. The first tab is connected to the battery cell, and the second tab is connected to the busbar.

[0020] Optionally, a high thermal conductivity structural adhesive is provided between the battery cell and the web plate, and between the battery cell and the wing plate.

[0021] The beneficial effects of this utility model are as follows: It provides a common module for soft-pack battery cells, including: a battery bracket, a pair of battery cells, a pair of tab brackets, and a pair of busbars. The battery bracket has an I-shaped cross-section, including a web and a pair of wing plates. The web has a heat dissipation space inside, and a pair of mounting spaces are formed on both sides of the web. The pair of battery cells are respectively installed in the pair of mounting spaces, and the battery cells are in contact with the web and the pair of wing plates, forming a three-sided heat conduction. This allows the heat from the large surface of the battery cell and the pair of ends to be conducted to the pair of wing plates simultaneously, achieving high-rate heat dissipation of the soft-pack battery, effectively reducing temperature rise and temperature difference between cells, and improving the temperature uniformity of the module. In addition, the heat dissipation space of the web can also mitigate the expansion force of the battery cells during charging and discharging, improving structural stability and heat diffusion efficiency.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0024] Figure 1 A schematic structural diagram of a common module for pouch cells according to an embodiment of the present invention is shown.

[0025] Figure 2 A disassembled structural diagram of a common module for pouch cells according to an embodiment of the present invention is shown.

[0026] Figure 3 A schematic structural diagram of a battery holder and a tab holder according to an embodiment of the present invention is shown.

[0027] Figure 4 A schematic structural diagram of a battery holder according to an embodiment of the present invention is shown.

[0028] Figure 5 A schematic structural diagram of a battery holder and a battery cell according to an embodiment of the present invention is shown.

[0029] Figure 6 One of the schematic structural diagrams of an electrode holder according to an embodiment of the present invention is shown.

[0030] Figure 7 The second schematic structural diagram of the tab holder according to an embodiment of the present invention is shown.

[0031] Figure 8 A schematic diagram of the assembly of two pouch cell common modules according to an embodiment of the present invention is shown.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Battery bracket; 2. Body plate; 3. Wing plate; 4. Heat dissipation space; 5. Installation space; 6. Battery cell; 7. Terminal tab; 8. Terminal tab bracket; 9. Mounting slot; 10. Busbar; 11. Plate 1; 12. Plate 2; 13. Pressure relief plate; 14. Connecting component; 15. Insertion hole; 16. Pin; 17. First snap-fit; 18. Second snap-fit; 19. Slot; 20. Positioning insert plate; 21. Positioning slot; 22. Terminal tab 1; 23. Terminal tab 2; 24. High thermal conductivity structural adhesive. Detailed Implementation

[0034] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0035] like Figure 1-8 As shown, this embodiment provides a common module for pouch cells, including:

[0036] The battery bracket 1 has an I-shaped cross-section and includes a web 2 and a pair of wing plates 3. The web 2 has a heat dissipation space 4 inside and a pair of installation spaces 5 on both sides of the web 2.

[0037] A pair of battery cells 6 are installed in a pair of installation spaces 5, and the battery cells 6 are attached to the belly plate 2 and the pair of wing plates 3. Both ends of the battery cells 6 are connected to tabs 7.

[0038] A pair of electrode brackets 8 are connected to both ends of the battery bracket 1, and the outer side of the electrode brackets 8 is provided with mounting grooves 9;

[0039] A pair of busbars 10 are installed in the mounting slot 9 and connected to the tab 7.

[0040] Specifically, the battery bracket 1 of the common module has an I-shaped cross-section, and a pair of mounting spaces 5 are formed on both sides of the web 2. The battery cell 6 is installed in the mounting space 5. The web 2 has a heat dissipation space 4 inside. The battery cell 6 is in contact with the web 2 and the pair of wing plates 3, forming a three-sided heat conduction system. This allows the heat from the large surface of the battery cell 6 and the pair of ends to be conducted to the pair of wing plates 3 simultaneously. The heat conduction path is as follows: Figure 3 As shown by the middle arrow, the wing plate 3 can be mounted on a liquid cooling plate or other heat dissipation measures to achieve high-rate heat dissipation of the pouch battery, effectively reducing temperature rise and temperature difference between individual cells, and improving the temperature uniformity of the module. In addition, the heat dissipation space 4 of the belly plate 2 can also alleviate the expansion force of the battery cells 6 during charging and discharging, improving structural stability and heat diffusion efficiency.

[0041] In this embodiment, the web plate 2 includes: a first plate 11 and a second plate 12. The first plate 11 and the second plate 12 are arranged in parallel, and a heat dissipation space 4 is formed between the first plate 11 and the second plate 12.

[0042] Furthermore, the heat dissipation space 4 is provided with multiple pressure relief plates 13. One side of the pressure relief plate 13 is connected to plate 11, and the other side of the pressure relief plate 13 is connected to plate 2 12.

[0043] Specifically, the pressure relief plate 13 can deform when subjected to the expansion force of the battery cell 6, absorbing the expansion force while ensuring good fit between the battery cell 6 and the web plate 2 and the wing plate 3, thereby effectively ensuring the heat conduction effect.

[0044] Furthermore, multiple pressure relief plates 13 are alternately set at angles.

[0045] Specifically, multiple pressure relief plates 13 form multiple triangular structures within the heat dissipation space 4, thereby increasing the strength of the web plate 2.

[0046] Optionally, a pair of connecting parts 14 are provided on the outer side of the electrode bracket 8. One end of the connecting part 14 is provided with a socket 15, and the other end of the connecting part 14 is provided with a pin 16. The connecting part 14 is arranged along the thickness direction of the battery bracket 1.

[0047] Specifically, in the current system assembly process, battery stacking is typically achieved through tooling positioning, bonding processes, and mechanical connections. This process is cumbersome, time-consuming, and inefficient, making it difficult to meet the demands of rapid production and large-scale assembly, and hindering the standardization and promotion of battery modules or systems. The tab bracket 8 of this cell common module is equipped with pins 16 and sockets 15, enabling rapid combination of multiple common modules through simple plug-in connections. This facilitates system assembly and improves the production cycle time of modules or systems.

[0048] Optionally, the mounting groove 9 is provided with a pair of first latches 17 at both ends, and the busbar 10 is engaged between the pair of first latches 17.

[0049] Specifically, this snap-fit ​​method is more convenient and faster than traditional welding or screw connections, and reduces the risk of damage to the busbar 10 during assembly, thereby improving production efficiency and product quality.

[0050] Optionally, the inner side of the electrode bracket 8 is provided with multiple second buckles 18, and the web plate 2 is provided with multiple slots 19, and the second buckles 18 are engaged with the slots 19.

[0051] Specifically, the second buckle 18 is snapped into the slot 19, which is simple in structure and firmly connected. This effectively prevents the tab bracket 8 from loosening during use and ensures the stability of the module.

[0052] Optionally, the inner side of the tab bracket 8 is provided with a pair of positioning plates 20, and the heat dissipation space 4 is provided with four positioning slots 21, and the positioning plates 20 are inserted into the positioning slots 21.

[0053] Specifically, the positioning plate 20 and the positioning slot 21 are inserted and cooperated to accurately position the tab bracket 8, ensuring the accuracy of its installation position and further improving the assembly accuracy and reliability of the module.

[0054] In this embodiment, the cross-section of the tab 7 is L-shaped, including tab 1 22 and tab 2 23. Tab 1 22 is connected to the battery cell 6, and tab 2 23 is connected to the busbar 10.

[0055] Optionally, a high thermal conductivity structural adhesive 24 is provided between the battery cell 6 and the web plate 2, and between the battery cell 6 and the wing plate 3.

[0056] Specifically, the high thermal conductivity structural adhesive 24 can effectively improve the heat dissipation performance of the module, while also enhancing the bonding strength between the battery cell 6 and the bracket, ensuring the stability of the battery cell 6 during use, and extending the battery's service life.

[0057] In summary, this soft-pack battery cell common module achieves an organic unity of structural strength, thermal management, and assembly convenience through innovative profile structure design and thermal management path integration. It provides an efficient and reliable assembly platform for power battery modules in high-rate application scenarios, significantly improving the thermal safety, performance stability, and modular assembly efficiency of the battery system, and has good prospects for industrial application.

[0058] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A soft-pack battery cell common module, characterized by, include: The battery bracket (1) has an I-shaped cross section and includes a web (2) and a pair of wing plates (3). The web (2) has a heat dissipation space (4) inside and a pair of mounting spaces (5) are formed on both sides of the web (2). A pair of battery cells (6) are installed in a pair of installation spaces (5), and the battery cells (6) are attached to the web plate (2) and the pair of wing plates (3). Both ends of the battery cells (6) are connected to tabs (7). A pair of electrode brackets (8) are connected to both ends of the battery bracket (1), and the outer side of the electrode brackets (8) is provided with mounting grooves (9); A pair of busbars (10) are installed in the mounting slot (9) and the busbars (10) are connected to the tabs (7).

2. The common module for soft-pack battery cells according to claim 1, characterized in that, The web (2) includes: a first plate (11) and a second plate (12), the first plate (11) and the second plate (12) are arranged in parallel, and the heat dissipation space (4) is formed between the first plate (11) and the second plate (12).

3. The common module for soft-pack battery cells according to claim 2, characterized in that, The heat dissipation space (4) is provided with multiple pressure relief plates (13). One side of the pressure relief plate (13) is connected to the first plate (11), and the other side of the pressure relief plate (13) is connected to the second plate (12).

4. The soft-pack battery cell common module according to claim 3, characterized in that, Multiple pressure relief plates (13) are arranged alternately at angles.

5. The common module for soft-pack battery cells according to claim 1, characterized in that, The outer side of the electrode bracket (8) is provided with a pair of connecting parts (14). One end of the connecting part (14) is provided with a socket (15), and the other end of the connecting part (14) is provided with a pin (16). The connecting part (14) is arranged along the thickness direction of the battery bracket (1).

6. The common module for soft-pack battery cells according to claim 1, characterized in that, The mounting groove (9) has a pair of first buckles (17) at both ends, and the busbar (10) is engaged between the pair of first buckles (17).

7. The soft-pack battery cell common module according to claim 1, characterized in that, The inner side of the electrode bracket (8) is provided with a plurality of second buckles (18), and the web plate (2) is provided with a plurality of slots (19), and the second buckles (18) are engaged with the slots (19).

8. The common module for soft-pack battery cells according to claim 1, characterized in that, The inner side of the tab bracket (8) is provided with a pair of positioning plates (20), and the heat dissipation space (4) is provided with four positioning slots (21). The positioning plates (20) are inserted into the positioning slots (21).

9. The common module for soft-pack battery cells according to claim 1, characterized in that, The tab (7) has an L-shaped cross-section and includes tab one (22) and tab two (23). Tab one (22) is connected to the battery cell (6), and tab two (23) is connected to the busbar (10).

10. The common module for soft-pack battery cells according to claim 1, characterized in that, High thermal conductivity structural adhesive (24) is provided between the battery cell (6) and the web plate (2) and between the battery cell (6) and the wing plate (3).

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