Shockproof high-temperature-resistant battery module metal substrate

Abstract

The utility model discloses a shock -proof high temperature -resistant battery module metal substrate, include: heat abstractor, including buffer base plate, the inside of buffer base plate is established with a plurality of groups honeycomb concave pit, the inside of concave pit all is provided with heat conduction elastic spacer, the top of heat conduction elastic spacer is higher than the surface of buffer base plate, the bottom of heat conduction elastic spacer is fixedly connected with heat conduction transition base plate, the bottom of heat conduction transition base plate is fixedly connected with fin pedestal, through rubber metal composite bushing design of four corners and edge, outer layer high and low temperature resistant fluorine rubber can two -way buffering transverse and longitudinal vibration, the inner layer stainless steel sleeve passes through the excess fit and builds firm connection strength, and the stable support system is formed by collocating longitudinal and transverse reinforcing bars, not only cut off the vibration transmission path, but also promote the substrate anti -deformation ability, effectively avoid the battery cell collision wear and tear, make the module keep structure stable under the complex working condition such as transportation, use etc.

Description

Technical Field

[0001] This utility model relates to the field of energy storage and heat conduction technology, specifically a shock-absorbing and high-temperature resistant metal substrate for battery modules. Background Technology

[0002] The metal substrate of the battery module is the core structural component that supports the battery cells. It is usually made of aluminum, copper or alloy materials and has the functions of mechanical fixation, heat dissipation and circuit bearing. It can stabilize the arrangement of cells, distribute the stress, and quickly dissipate the working heat. At the same time, it provides the mounting reference for the tabs, connectors, etc. It is a key component to ensure the structural strength, thermal management efficiency and safety of the battery module.

[0003] Existing metal substrates for battery modules on the market generally suffer from insufficient shock absorption and poor high-temperature resistance. Vibration and impact can easily cause the substrate to crack and the connection to fail. Under high-temperature conditions, material degradation and a sharp drop in thermal conductivity can occur, which in turn can lead to rapid capacity decay, shortened cycle life, and even the risk of thermal runaway, seriously affecting the safety and reliability of the battery module. Therefore, this shock-absorbing and high-temperature resistant metal substrate for battery modules was designed. Utility Model Content

[0004] This invention provides a shock-absorbing and high-temperature resistant metal substrate for battery modules to solve the above-mentioned problems.

[0005] This utility model provides a shock-absorbing and high-temperature resistant metal substrate for a battery module, comprising: a heat dissipation mechanism including a buffer substrate, wherein the buffer substrate has several sets of honeycomb-shaped pits inside, each pit is provided with a thermally conductive elastic pad, the top of the thermally conductive elastic pad is higher than the surface of the buffer substrate, the bottom of the thermally conductive elastic pad is fixedly connected to a thermally conductive transition substrate, the bottom of the thermally conductive transition substrate is fixedly connected to a fin base, the outer wall of the fin base is fixedly connected with several sets of heat dissipation fins arranged in a circumferential array, the outer side of the heat dissipation fins is provided with several sets of heat dissipation fins, and the top of the heat dissipation fins is fixedly connected to the thermally conductive transition substrate;

[0006] The reinforcing mechanism includes several sets of reinforcing ribs 1 fixedly connected to the top of the buffer substrate, and several sets of reinforcing ribs 1 internally fixedly connected to reinforcing ribs 2.

[0007] Furthermore, several sets of reinforcing ribs are arranged vertically, reinforcing ribs are arranged horizontally, and reinforcing ribs are arranged perpendicular to each other.

[0008] Furthermore, the bottom end of the buffer substrate is attached to the thermally conductive transition substrate, and fixing holes are provided at the four corners of the buffer substrate and the thermally conductive transition substrate, with rubber sleeves movably fitted inside the fixing holes.

[0009] Furthermore, a metal inner ring is fixedly connected inside the rubber sleeve, and a metal connecting rod is threadedly connected inside the metal inner ring.

[0010] Furthermore, four sets of raised corner protectors are fixedly connected to the bottom end of the thermally conductive transition substrate. The four sets of raised corner protectors are respectively set on the outside of the rubber sleeve, and the bottom end of the raised corner protectors is at the same height as the heat dissipation fins.

[0011] Furthermore, four sets of heat-conducting copper pipes are fixedly sleeved inside the heat dissipation fins, and the four sets of heat-conducting copper pipes are respectively arranged on both sides of the heat dissipation fins.

[0012] The technical solutions provided in this application embodiment may include the following beneficial effects:

[0013] 1. Through the design of rubber-metal composite bushings at the four corners and edges, the outer layer of high and low temperature resistant fluororubber can buffer the transverse and longitudinal vibrations in both directions, while the inner stainless steel sleeve strengthens the connection through interference fit. Combined with longitudinal and transverse reinforcing ribs, a stable support system is formed, which not only blocks the vibration transmission path but also improves the substrate's resistance to deformation, effectively avoiding cell collision and wear, and allowing the module to maintain structural stability under complex working conditions such as transportation and use.

[0014] 2. Through the collaborative design of honeycomb thermally conductive elastic pads, central core heat dissipation fins, outer fins and thermally conductive copper pipes, an efficient three-dimensional heat dissipation network is constructed to quickly conduct heat from the battery cells and avoid local overheating. At the same time, the bushing fluororubber material and heat dissipation components have high temperature resistance characteristics and can withstand extreme temperature changes, ensuring that the module can continue to operate stably in high temperature environments, taking into account both heat dissipation efficiency and adaptability to harsh working conditions.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a shock-absorbing and high-temperature resistant battery module metal substrate provided in one embodiment of this application;

[0017] Figure 2 yes Figure 1 Another perspective view;

[0018] Figure 3 yes Figure 1 A partial cross-sectional structural diagram;

[0019] Figure 4 yes Figure 1 A partial structural appearance diagram.

[0020] In the diagram: 1. Buffer base plate; 2. Metal connecting rod; 3. Rubber sleeve; 4. Reinforcing rib one; 5. Reinforcing rib two; 6. Thermally conductive elastic pad; 7. Elevating corner protector; 8. Fin base; 9. Heat dissipation fin one; 10. Heat dissipation fin two; 11. Thermally conductive copper pipe; 12. Metal inner ring; 13. Thermally conductive transition base plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, this application provides a shock-absorbing and high-temperature resistant battery module metal substrate, including: a heat dissipation mechanism, including a buffer substrate 1, the buffer substrate 1 having a plurality of honeycomb-shaped pits inside, each pit having a thermally conductive elastic pad 6 inside, the top of the thermally conductive elastic pad 6 being higher than the surface of the buffer substrate 1, the bottom of the thermally conductive elastic pad 6 being fixedly connected to a thermally conductive transition substrate 13, the bottom of the thermally conductive transition substrate 13 being fixedly connected to a fin base 8, the outer wall of the fin base 8 being fixedly connected to a plurality of circumferentially arrayed heat dissipation fins 9, the outer side of the heat dissipation fins 9 being provided with a plurality of heat dissipation fins 10, the top of the heat dissipation fins 10 being fixedly connected to the thermally conductive transition substrate 13;

[0023] After adopting the above technical solution, the heat generated by the battery cell during operation is first rapidly conducted to the thermally conductive transition substrate 13 through close contact with the thermally conductive elastic pad 6. The transition substrate evenly distributes the heat to the fin base 8, heat dissipation fin 19, and heat dissipation fin 20, forming a multi-layer three-dimensional heat dissipation structure. At the same time, the thermally conductive elastic pad 6 can elastically buffer the slight deformation or vibration of the battery cell to offset the impact of external forces. The honeycomb-shaped pits not only provide installation positioning for the thermally conductive elastic pad 6, but also enhance the structural toughness of the buffer substrate 1. Meanwhile, the fin base 8 and heat dissipation fin 19 are set in the middle section of the thermally conductive transition substrate 13, close to the concentrated area of ​​the battery cell, shortening the heat transfer time. The conduction path ensures more uniform and efficient heat dissipation, avoids local overheating, enhances the load-bearing capacity and deformation resistance of the middle section of the substrate, improves structural stability, and forms a layered heat dissipation structure with the outer heat dissipation fins 10, taking into account both heat dissipation effect and space utilization, improving heat exchange efficiency, and achieving the dual functions of efficient heat dissipation and shock absorption. The top of the thermally conductive elastic pad 6 is higher than the surface of the buffer substrate 1, ensuring that the battery cell always maintains a tight thermal contact after installation. Even if it encounters slight vibration, the heat conduction will not be interrupted. During operation, simply place the battery cell in the honeycomb pit area of ​​the buffer substrate 1, and the elastic deformation of the pad will automatically adapt to the installation height of the battery cell without additional adjustment.

[0024] The reinforcing mechanism includes several sets of reinforcing ribs 4 fixedly connected to the top of the buffer substrate 1, and several sets of reinforcing ribs 4 are internally fixedly connected to reinforcing ribs 5.

[0025] By adding reinforcing ribs 1-4 and 2-5, the bending and deformation resistance of the buffer substrate 1 is enhanced, preventing the substrate from deforming due to the weight of the battery cell or external pressure, thus protecting the battery cell from compression. It is simple but has a significant reinforcement effect. The vertical and horizontal layout can evenly distribute the force and improve the overall structural stability of the substrate. No additional reinforcement steps are required during operation. The weight of the battery cell can be directly supported by the preset reinforcing rib structure. After installation, the substrate is less likely to experience local collapse or warping.

[0026] It should be noted that the spacing between reinforcing ribs 1 and 2 needs to be flexibly adjusted according to the length and width of the battery module. They are placed in the gaps between the battery modules, which can not only form a physical limit through the side of the ribs to constrain the lateral displacement of the cells, but also use the height of the ribs to isolate adjacent modules and avoid direct collisions between modules during transportation or charging and discharging vibrations, thus preventing wear.

[0027] In one optional embodiment, several sets of reinforcing ribs 4 are arranged vertically, and reinforcing ribs 5 are arranged horizontally, with reinforcing ribs 5 and reinforcing ribs 4 arranged perpendicular to each other.

[0028] The vertical reinforcing rib 4 bears the pressure in the vertical direction, while the horizontal reinforcing rib 5 disperses the tensile and shear forces in the horizontal direction, forming an all-round force support. The force distribution can adapt to the multi-directional external force impact during the transportation and installation of the battery module. During operation, the battery cells can be neatly arranged along the area separated by the reinforcing ribs. The reinforcing ribs can also play a positioning and guiding role, improving the regularity of battery cell installation, while avoiding excessive compression between adjacent battery cells.

[0029] In one optional embodiment, the bottom end of the buffer substrate 1 is attached to the thermally conductive transition substrate 13, and fixing holes are provided at the four corners of the buffer substrate 1 and the thermally conductive transition substrate 13, with rubber sleeves 3 movably fitted inside the fixing holes.

[0030] The round mounting holes at the four corners and edges have built-in rubber-metal composite bushings. The outer layer of high and low temperature resistant fluororubber and the inner layer of stainless steel sleeve form a composite structure. The interference fit ensures that the bushing is stable and will not fall off. The rigidity of the bolt connection between the base plate and the shell is borne by the stainless steel sleeve, while the rubber layer can elastically buffer lateral and longitudinal vibrations, like a "shock absorber" to block the vibration transmission path. This ensures the connection strength and avoids component wear caused by rigid contact, adapting to the anti-vibration requirements of battery modules under complex operating conditions.

[0031] In an optional embodiment, a metal inner ring 12 is fixedly connected inside the rubber sleeve 3, and a metal connecting rod 2 is threadedly connected inside the metal inner ring 12.

[0032] The structural function of the inner metal ring 12 is to enhance the tensile and compressive strength of the rubber sleeve 3, preventing deformation and damage to the rubber sleeve 3 during threaded connection. It also provides a stable foundation for the threaded connection of the metal connecting rod 2, ensuring a secure connection between the two substrates. The advantages are that it combines the shock absorption properties of rubber with the high strength of metal, resulting in strong connection stability and easy disassembly. During operation, simply screwing the metal connecting rod 2 into the inner metal ring 12 completes the fixation of the two substrates. The threaded connection allows for adjustable tightness to adapt to the fastening requirements of different installation scenarios.

[0033] In one optional embodiment, four sets of raised corner protectors 7 are fixedly connected to the bottom end of the thermally conductive transition substrate 13. The four sets of raised corner protectors 7 are respectively disposed on the outside of the rubber sleeve 3, and the bottom end of the raised corner protectors 7 is at the same height as the heat dissipation fin 2 10.

[0034] The function of the raised corner protector 7 is to provide stable support for the entire base plate assembly, preventing the heat sink fins from directly contacting the mounting surface and causing wear. At the same time, it ensures that there is sufficient ventilation gap around the heat sink fins to ensure unobstructed heat dissipation channels. Its advantages are stable support and strong protection. The equal height design can keep the base plate assembly horizontal when placed, preventing the heat sink fins from being deformed by force. During operation, simply place the base plate assembly on the mounting surface, and the raised corner protector 7 will automatically position and level it without the need for additional shims, thus improving installation efficiency.

[0035] In one optional embodiment, four sets of heat-conducting copper pipes 11 are fixedly sleeved inside several sets of heat dissipation fins 2 10, and the four sets of heat-conducting copper pipes 11 are respectively arranged on both sides of the heat dissipation fins 1 9.

[0036] The structural function of the heat-conducting copper pipe 11 is to quickly conduct heat from the heat dissipation fins 10, forming a composite heat dissipation structure of "fin heat conduction + copper pipe accelerated heat dissipation". This structure quickly conducts heat from the heat dissipation fins and disperses it over a wider area, improving heat dissipation efficiency. The high thermal conductivity of the copper pipe can compensate for the insufficient heat conduction speed of the fins. The layout on both sides ensures that the heat from the heat dissipation fins 10 can be quickly conducted. No additional adjustments are required during operation. The fixed connection between the heat-conducting copper pipe 11 and the heat dissipation fins 10 is firm and reliable, and it is not easy to fall off after long-term use. It is suitable for complex working conditions such as high temperature and vibration.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing and high-temperature resistant metal substrate for a battery module, characterized in that, include: The heat dissipation mechanism includes a buffer substrate (1), the buffer substrate (1) has several honeycomb-shaped pits inside, each pit is provided with a thermally conductive elastic pad (6), the top of the thermally conductive elastic pad (6) is higher than the surface of the buffer substrate (1), the bottom of the thermally conductive elastic pad (6) is fixedly connected to a thermally conductive transition substrate (13), the bottom of the thermally conductive transition substrate (13) is fixedly connected to a fin base (8), the outer wall of the fin base (8) is fixedly connected to several groups of heat dissipation fins (9) arranged in a circumferential array, the outer side of the heat dissipation fins (9) is provided with several groups of heat dissipation fins (10), the top of the heat dissipation fins (10) is fixedly connected to the thermally conductive transition substrate (13). The strengthening mechanism includes several sets of reinforcing ribs (4) fixedly connected to the top of the buffer base plate (1), and reinforcing ribs (5) fixedly connected inside the several sets of reinforcing ribs (4).

2. The shock-absorbing and high-temperature resistant battery module metal substrate according to claim 1, characterized in that, Several sets of the first reinforcing ribs (4) are arranged vertically, the second reinforcing ribs (5) are arranged horizontally, and the second reinforcing ribs (5) and the first reinforcing ribs (4) are arranged perpendicular to each other.

3. The shock-absorbing and high-temperature resistant metal substrate for a battery module according to claim 1, characterized in that, The bottom end of the buffer substrate (1) is attached to the thermally conductive transition substrate (13). Fixing holes are provided at the four corners of the buffer substrate (1) and the thermally conductive transition substrate (13). Rubber sleeves (3) are movably fitted inside the fixing holes.

4. The shock-absorbing and high-temperature resistant battery module metal substrate according to claim 3, characterized in that, The rubber sleeve (3) is fixedly connected to a metal inner ring (12), and the metal inner ring (12) is threadedly connected to a metal connecting rod (2).

5. The shock-absorbing and high-temperature resistant metal substrate for a battery module according to claim 1, characterized in that, The bottom end of the thermally conductive transition substrate (13) is fixedly connected with four sets of raised corner protectors (7). The four sets of raised corner protectors (7) are respectively set on the outside of the rubber sleeve (3). The bottom end of the raised corner protectors (7) is at the same height as the heat dissipation fins (10).

6. The shock-absorbing and high-temperature resistant metal substrate for a battery module according to claim 1, characterized in that, The heat dissipation fins (10) of several groups are internally fixedly fitted with four sets of heat-conducting copper pipes (11), and the four sets of heat-conducting copper pipes (11) are respectively arranged on both sides of the heat dissipation fins (9).

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