Power battery module structure

Abstract

The utility model discloses a power battery module structure, which relates to the technical field of battery modules and comprises a plurality of battery cells, the plurality of battery cells are combined into a battery cell group, a heat-conducting silica gel pad is filled between every two battery cells, output electrode bases are arranged at two ends of the battery cell group, and a blister box is mounted at the upper end of the battery cell group. A module pressing strip is arranged in the middle of the upper end of the plastic uptake box, a plurality of connecting bars are arranged on the front side and the rear side of the module pressing strip and used for providing current paths for two adjacent battery cells, output bars are arranged on the right side of the rear end and the left side of the front end of the module pressing strip, and the output bars and the output pole base are locked and fixed in a matched mode. According to the battery module disclosed by the utility model, the heat-conducting silica gel pads are arranged among the battery cells, so that a buffering effect is effectively provided, and direct impact of external force such as vibration and collision on the battery cells is remarkably reduced, thereby not only protecting the battery cells from being damaged, but also greatly prolonging the service life of the battery cell group, and ensuring that the battery module can still run stably in a complex environment.

Description

Technical Field

[0001] This utility model relates to the field of battery module technology, specifically a power battery module structure. Background Technology

[0002] With the rapid development of the new energy vehicle market and increased government support for new energy vehicles, stricter emission standards are driving the shift from traditional fuel-powered vehicles to new energy sources. The application of new energy technologies in the automotive field is gradually becoming a trend. New energy will play an increasingly important role in the future heavy-duty transportation sector, propelling the entire industry towards new energy and intelligent technologies.

[0003] Battery modules are key energy storage power sources for devices such as new energy vehicles and energy storage systems. A battery module is typically composed of multiple individual batteries connected in series or parallel to form a battery module with varying numbers of cells, enabling charging and discharging. The assembly of a battery module requires multiple cells and end plates. End plates are generally placed at each end of the cells and then secured with clamps to form a unified battery module structure. The battery module assembled using this method has relatively low strength and a short lifespan.

[0004] Based on this, a power battery module structure is now provided that can eliminate the drawbacks of existing structures. Utility Model Content

[0005] The purpose of this utility model is to provide a power battery module structure to solve the problems of low strength and short service life of the assembled battery module in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A power battery module structure includes several battery cells, which are combined into a battery cell group. A thermally conductive silicone pad is filled between every two battery cells. Output electrode bases are provided at both ends of the battery cell group. A blister pack is installed on the upper end of the battery cell group. A module retaining strip is provided in the middle of the upper end of the blister pack. Several connecting bars are provided on the front and rear sides of the module retaining strip. The connecting bars are used to provide current paths for two adjacent battery cells. Output bars are provided on the right rear end and the left front end of the module retaining strip. The output bars are locked and fixed with the output electrode bases. A module end plate is installed on the end of the thermally conductive silicone pad away from the battery cell group. The module end plate and the module retaining strip are fixed together by steel-plastic hoops. The battery cell group and the two module end plates are fixed by two hoops.

[0008] Preferably, the module end plate is an extruded aluminum profile, the upper end of the module end plate is provided with an internal threaded hole, and a wire thread sleeve is installed on the upper end of the module end plate. The end of the module end plate away from the battery cell assembly is symmetrically fixed with limiting ribs on the front and rear sides for limiting the band. Two waist-shaped holes and two circular holes are provided between the two limiting ribs.

[0009] Preferably, the module pressure bar has several cell explosion-proof valve clearance holes in the middle, and several wire harness fixing holes at both ends of the module pressure bar.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model effectively provides a buffer by installing thermally conductive silicone pads between the battery cells, which significantly reduces the direct impact of external forces such as vibration and collision on the battery cells. This not only protects the battery cells from damage, but also greatly enhances the service life of the battery cell assembly, ensuring that the battery module can still operate stably in complex environments.

[0012] 2. By adding module pressure strips, this utility model not only strengthens the overall structure of the top of the battery cell assembly, but also significantly enhances the strength and rigidity of the top connection of the module, thereby effectively reducing the risk of module failure during vibration and improving the reliability and durability of the battery module; and by placing two module end plates made of extruded aluminum profiles at both ends of the battery cell assembly, the end plates are connected to the module pressure strips by steel-plastic hoops, which can improve the strength of the module connection and enhance the module's resistance to impact and torsion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the module end plate of this utility model.

[0015] Figure 3 This is a schematic diagram of the module pressure strip of this utility model.

[0016] Figure label annotations: 1. Output pole base; 2. Module end plate; 3. Thermal conductive silicone pad; 4. Hoop; 5. Blister box; 6. Output bar; 7. Module pressure strip; 8. Wire thread sleeve; 9. Waist-shaped hole; 10. Circular hole; 11. Limiting rib; 12. Explosion-proof valve clearance hole for battery cell; 13. Wire harness fixing hole; 14. Battery cell; 15. Connecting bar. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] In one embodiment, such as Figures 1-3 As shown, a power battery module structure includes several battery cells 14, which are combined to form a battery cell group. A thermally conductive silicone pad 3 is filled between every two battery cells 14. Output electrode bases 1 are provided at both ends of the battery cell group. A blister box 5 is installed on the upper end of the battery cell group. A module pressure strip 7 is provided in the middle of the upper end of the blister box 5. Several connecting bars 15 are provided on the front and rear sides of the module pressure strip 7. The connecting bars 15 are used to provide current paths for two adjacent battery cells 14. Output bars 6 are provided on the right rear end and the left front end of the module pressure strip 7. The output bars 6 are locked and fixed with the output electrode bases 1. A module end plate 2 is installed on the end of the thermally conductive silicone pad 3 away from the battery cell group. The module end plate 2 and the module pressure strip 7 are fixed together by steel-plastic hoops. The battery cell group and the two module end plates 2 are fixed by two hoops 4.

[0019] In this embodiment, the thermally conductive silicone pad 3 is used to provide cushioning, reduce the impact of external forces such as vibration and collision on the battery cell, and enhance the battery module life; the output bar 6 and the connection bar 15 provide a current path for the battery cell 14, enabling them to work together to achieve the voltage and current output required by the battery module; the module pressure bar 7 can fix the battery cell 14 in a specific position to prevent the module from shifting or shaking under the action of external forces such as vibration and collision, and ensure the stability of the overall structure of the battery module.

[0020] In an optional embodiment, the module end plate 2 is an extruded aluminum profile, the upper end of the module end plate 2 is provided with an internal threaded hole, and a wire thread sleeve 8 is installed on the upper end of the module end plate 2. The end of the module end plate 2 away from the battery cell assembly is symmetrically fixed with limiting ribs 11 for limiting the band 4. Two waist-shaped holes 9 and two circular holes 10 are provided between the two limiting ribs 11.

[0021] It should be noted that the module end plate 2 is made of extruded aluminum profile, which is lightweight, high-strength, and easy to process. Limiting ribs 11 are symmetrically fixed on both the front and rear sides of the end of the module end plate 2 away from the battery cell assembly. These ribs limit the clamp 4, ensuring that the clamp 4 is correctly positioned on the module end plate 2 during installation and preventing it from falling off during vibration. The oblong hole 9 and the circular hole 10 are respectively for fixing the wiring harness and for hoisting and transporting the module.

[0022] In an optional embodiment, the module pressure strip 7 has several cell explosion-proof valve clearance holes 12 in the middle, and several wire harness fixing holes 13 are provided at both the front and rear ends of the module pressure strip 7.

[0023] It should be noted that the module pressure bar 7 has a cell explosion-proof valve clearance hole 12 in the middle, which is designed to ensure that the explosion-proof valve opens smoothly and releases pressure to prevent damage when the cell is abnormal. The front and rear ends have wiring harness fixing holes 13 to ensure that the internal wiring harness is arranged in an orderly and secure manner, and to prevent failures caused by wiring harness problems during operation.

[0024] The above embodiment discloses a power battery module structure, wherein the power battery module is composed of a core of battery cells. Thermally conductive silicone pads 3 are used between the cells to enhance heat dissipation and shock absorption, extending the module's lifespan. A blister pack 5 covers the battery cells, protecting them and aiding in heat dissipation. A module retaining strip 7 is located on the blister pack, fixing the battery cell position and preventing displacement. Bars 15 on both sides of the strip ensure unobstructed current flow between the cells. Output bars 6 are located at both ends of the module retaining strip, locking to the output electrode base 1 to output electrical energy. Two straps 4 securely fasten and fix the above components.

[0025] The module end plate 2 is made of extruded aluminum, which is lightweight and high-strength, and is used to fix the module structure together with the module pressure strip 7. The end plate is provided with internal threaded holes and steel wire thread sleeves 8 for fixing components, limiting ribs 11 and positioning bands 4 to prevent falling off, and waist-shaped holes 9 and circular holes 10 to facilitate wire harness fixing and module hoisting and transportation.

[0026] The module pressure bar has a cell explosion-proof valve clearance hole 12 in the middle to ensure that the explosion-proof valve can open normally and safely release pressure in case of cell abnormality. The front and rear end wire harness fixing holes 13 ensure that the wire harness is neatly arranged and securely fastened to avoid operational failure.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power battery module structure, characterized in that, The battery pack includes several battery cells (14), which are combined to form a battery cell assembly. A thermally conductive silicone pad (3) is filled between every two battery cells (14). Output electrode bases (1) are provided at both ends of the battery cell assembly. A blister pack (5) is installed on the upper end of the battery cell assembly. A module pressure strip (7) is provided in the middle of the upper end of the blister pack (5). Several connecting bars (15) are provided on the front and rear sides of the module pressure strip (7). The connecting bars (15) are used to connect two adjacent battery cells. The battery cell (14) provides a current path. Output bars (6) are provided on the right rear end and the left front end of the module pressure bar (7). The output bars (6) are locked and fixed with the output electrode base (1). The end of the thermally conductive silicone pad (3) away from the battery cell assembly is equipped with a module end plate (2). The module end plate (2) and the module pressure bar (7) are fixed together by steel-plastic hoops. The battery cell assembly and the two module end plates (2) are fixed by two hoops (4).

2. The power battery module structure according to claim 1, characterized in that, The module end plate (2) is made of extruded aluminum profile. The module end plate (2) has an internal threaded hole at its upper end and a wire thread sleeve (8) is installed at its upper end. The module end plate (2) has symmetrically fixed limiting ribs (11) on both sides of the end away from the battery cell assembly for limiting the band (4). There are two waist-shaped holes (9) and two circular holes (10) between the two limiting ribs (11).

3. The power battery module structure according to claim 1, characterized in that, The module pressure strip (7) has several cell explosion-proof valve clearance holes (12) in the middle, and several wire harness fixing holes (13) are opened at both ends of the module pressure strip (7).

Images