Battery module structure and battery pack

Abstract

The utility model provides a kind of battery module structure and battery pack, battery module structure includes electric core, buffer layer, cold plate and support beam, multiple electric cores are sequentially arranged along first direction and fixed on support beam;Support beam is set on lower shell bottom plate, and it extends along first direction, it is configured to form interval space between the bottom surface of electric core and lower shell bottom plate, to provide enough buffer distance for bottom impact;Cold plate is set in the interval space, does not bear structure support function, buffer layer is set between lower shell bottom plate and cold plate, buffers and absorbs impact energy from bottom, while stably supports cold plate between electric core and lower shell bottom plate, ensure the stability of cold plate under vibration and impact environment.The utility model discloses a kind of battery module structure, by collaborative design, it has built multi-level protection system, significantly improved the mechanical impact resistance of module, structural rigidity and safety reliability, while reducing system cost.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery module structure and a battery pack. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety and reliability of power battery packs have increasingly become a focus of technological attention. As the core component of the battery pack, the mechanical structure design of the battery module directly affects the protection effect of the cells and the service life of the overall system.

[0003] In battery modules, the cooling plate typically adopts an integral flat structure, laid flat on the bottom plate of the battery pack. The battery cells are directly placed on the surface of the cooling plate. The cooling plate has the dual function of cooling and supporting the battery cells. To meet the support strength requirements, it needs to have high mechanical strength, which increases material costs, size, and weight. In addition, conventional aluminum cooling plate materials have low elongation at break. When the bottom of the battery pack is hit by a ball, bump, or squeeze, the cooling plate is easily damaged and cracked, which may lead to coolant leakage or internal short circuit, creating safety hazards. At the same time, the small distance between the bottom of the battery pack and the bottom plate of the casing, and the lack of an effective cushioning mechanism, exacerbates the risk of damage to the battery cells from bottom impacts. Utility Model Content

[0004] This utility model provides a battery module structure and battery pack to solve technical problems such as insufficient resistance to mechanical impact of battery modules, easy damage and cracking of cold plates causing safety hazards and excessive cost, and unreliable cell fixing.

[0005] This utility model provides a battery module structure, including:

[0006] Several battery cells are arranged sequentially along the first direction;

[0007] A support beam is disposed on the bottom plate of the lower housing and extends along the first direction. The battery cells are arranged sequentially and fixed to the support beam. The support beam is configured to form a gap between the bottom surface of the battery cells and the bottom plate of the lower housing.

[0008] A cold plate is disposed in the space between the partitions;

[0009] A buffer layer is disposed between the bottom plate of the lower housing and the cold plate, and the buffer layer supports the cold plate between the battery cell and the bottom plate of the lower housing.

[0010] In an optional embodiment, the buffer layer includes a support pad and a buffer pad stacked together, the support pad being fixed to the bottom plate of the lower housing and / or the support beam, and the buffer pad being sandwiched between the support pad and the cold plate.

[0011] In an alternative embodiment, the support beam includes:

[0012] A top support section, on which the battery cell is disposed;

[0013] Lateral connection sections extend along the height direction of the battery cell on both sides of the top support section to form the lateral connection sections, which are configured to raise the top support section and the battery cell thereon away from the bottom plate of the lower housing.

[0014] A cavity structure is formed between the top support section, the side connecting section, and the bottom plate of the lower shell.

[0015] In an alternative embodiment, the lateral connection segment includes:

[0016] The first side portion has one end connected to the bottom plate of the lower housing and the other end connected to the end of the top support section that contacts the battery cell;

[0017] The second side has one end connected to the bottom plate of the lower housing and the other end connected to the end of the top support section away from the battery cell. A partially raised section extends and protrudes along the height direction of the battery cell on the second side, and the partially raised section is arranged opposite to the side of the battery cell.

[0018] In an optional embodiment, the inner wall of the partially raised section is connected and fixed to the side of the battery cell by an adhesive.

[0019] In an optional embodiment, the locally heightened section includes a first protective plate and a second protective plate disposed opposite to each other, and an energy-absorbing cavity is formed between the first protective plate and the second protective plate to absorb the extrusion energy to protect the battery cell.

[0020] In an optional embodiment, the first protective plate is connected to the top support section, and the joint between the first protective plate and the top support section and the second protective plate is fixed by welding.

[0021] In an optional embodiment, the battery module structure further includes a reinforcing side plate, which is disposed on the side of the battery cell and bonded to the battery cell.

[0022] In an alternative embodiment, the reinforcing side panel comprises an epoxy board.

[0023] This utility model also proposes a battery pack, including the battery module structure as described in any of the above embodiments.

[0024] The beneficial effects of this utility model are as follows: The battery module structure and battery pack proposed in this utility model support the battery cells with a support beam, forming a bottom space. This elevates the battery cells and prevents them from directly contacting the lower casing and cold plate, providing a protective space. It can effectively isolate bottom impacts, protect the cold plate and battery cells, and reduce the design requirements and cost of the cold plate. The buffer layer is set between the bottom plate of the lower casing and the cold plate, effectively absorbing and buffering the impact energy from the bottom, protecting the cold plate from damage, and improving heat dissipation performance. The support beam structure can stabilize the battery cells while improving the stability of the battery cell connection and reducing the risk of external impacts intruding into the battery cells. The overall structure is simple and lightweight, and the components work together to improve the overall rigidity of the module and the reliability of battery cell fixation while ensuring good thermal management and optimizing the cost structure. This also improves the overall safety performance and mechanical reliability of the battery pack. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0026] In the attached diagram:

[0027] Figure 1 This is a partial structural diagram of a battery module structure provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the supporting beam of a battery module structure provided in one embodiment of the present invention;

[0029] Figure 3 This is a partial structural schematic diagram of a battery pack provided in an embodiment of the present invention.

[0030] The attached figures are labeled as follows:

[0031] 100. Battery cell; 200. Buffer layer; 300. Cold plate; 400. Support beam; 500. Reinforced side plate;

[0032] 210. Support pad; 220. Cushioning pad;

[0033] 410. Top support section; 420. First side section; 430. Second side section; 440. Clearance groove;

[0034] 431. Partially elevated section; 432. Energy-absorbing cavity. Detailed Implementation

[0035] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0037] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0038] With the rapid development of the new energy vehicle industry, power battery packs face severe challenges in terms of mechanical impact and safety reliability. Existing battery modules mostly place the cells at the bottom of the casing or support them with brackets. The cold plate is usually located between the cells and the casing and undertakes part of the structural support function. Impacts from the bottom can be directly transmitted to the cold plate and cells through the casing, leading to structural deformation, coolant leakage, or internal short circuits. The cold plate also increases weight and cost due to the need for high mechanical strength, and the overall rigidity of the module is insufficient, making it difficult to cope with vibration and compressive loads under complex working conditions.

[0039] Please see Figures 1 to 3This utility model proposes a battery module structure, including a battery cell 100, a buffer layer 200, a cold plate 300, and a support beam 400. The battery cell 100 constitutes the core power generation unit of the module. Multiple battery cells 100 are arranged sequentially along a first direction and fixed to the support beam 400. The support beam 400 is disposed on the bottom plate of the lower housing and extends along the first direction. Multiple battery cells 100 are disposed on the support beam 400 and connected and fixed to the support beam 400 by, for example, adhesive bonding. The support beam 400 is configured such that a gap is formed between the bottom surface of the battery cell 100 and the bottom plate of the lower housing. The space effectively elevates the battery cell 100, preventing direct contact between the bottom of the battery cell 100 and the lower casing, providing sufficient buffer distance for bottom impacts. The cold plate 300 is located in this space and does not bear any structural support function for the module. The buffer layer 200 is located between the bottom plate of the lower casing and the cold plate 300 to buffer and absorb impact energy from the bottom. At the same time, the buffer layer 200 stably supports the cold plate 300 between the battery cell 100 and the bottom plate of the lower casing, ensuring the stability of the cold plate 300 under vibration and impact environments. The battery module structure of this utility model, through the coordinated design of the support beam 400 and the buffer layer 200, achieves the elevation and isolation of the battery cell 100 and the specialization of the cold plate 300 (only responsible for cooling), and also constructs a multi-layer impact protection system, significantly improving the module's resistance to mechanical impact, structural rigidity, and safety reliability, while also helping to reduce system costs.

[0040] Please see Figures 1 to 3 In an optional embodiment of this utility model, the buffer layer 200 includes a support pad 210 and a buffer pad 220 stacked together. The support pad 210 can be fixed to the bottom surface of the lower housing base plate and / or the support beam 400 by adhesive. The buffer pad 220 is sandwiched between the support pad 210 and the cold plate 300. The support pad 210 provides a flat and stable mounting base for the buffer pad 220 and undertakes the main static support function, preventing the cold plate 300 from sinking due to stress relaxation during long-term use. The buffer pad 220 is mainly responsible for absorbing and dissipating energy through its own elastic deformation when instantaneous impacts occur. This layered design achieves functional decoupling and performance optimization of static support and dynamic buffering, resulting in higher reliability and better energy absorption efficiency.

[0041] Please see Figures 1 to 3In one optional embodiment of this invention, the support pad 210 is made of high-density, high-compressive-strength rigid support foam, which can provide a stable support plane and resist long-term compression creep; the buffer pad 220 is made of low-density, high-resilience rebound foam, which can undergo large deformation under impact loads to absorb energy and quickly recover its shape after unloading. The rigid support foam and the rebound foam complement each other in mechanical properties, together forming a highly efficient composite buffer system. In other embodiments, the support pad 210 can also be made of materials with certain rigidity and good creep resistance, such as rubber pads or engineering plastics, while the buffer pad 220 can be made of materials with excellent elasticity and energy absorption characteristics, such as silicone pads or polyurethane foam.

[0042] Please see Figures 1 to 3 In an optional embodiment of this utility model, the cold plate 300 is laid between the buffer layer 200 and the battery cell 100. Its upper and lower surfaces are in contact with or adjacent to the bottom surface of the battery cell 100 and the upper surface of the buffer layer 200, respectively. The battery cell 100 is supported by a Z-shaped beam, and its entire weight and working load are borne and transferred to the bottom plate of the lower housing through the support beam 400. The cold plate 300 is, for example, a liquid-cooled plate 300. The liquid-cooled plate 300 is gently supported by the buffer layer 200 between the battery cell 100 and the bottom plate of the lower housing. It no longer bears the structural support function and only serves as a cooling component. This allows the design of the liquid-cooled plate 300 to be free from structural mechanical constraints. Its plate thickness can be minimized based on the requirements of sealing, pressure resistance and heat dissipation performance, without the need to increase the material thickness and reinforcing rib structure for bending resistance and impact resistance. This significantly reduces the material cost and manufacturing cost of the liquid-cooled plate 300. Meanwhile, this layout ensures that the liquid cooling plate 300 and the bottom surface of the battery cell 100 can maintain a large area and uniform contact, eliminating the problem of uneven stress on the contact surface caused by structural load, greatly optimizing heat conduction efficiency, and improving the heat dissipation performance and temperature uniformity of the battery module.

[0043] Please see Figures 1 to 3In an optional embodiment of this utility model, the support beam 400 includes a top support section 410 and two lateral connecting sections, with an overall cross-section in the shape of a "Z" (vertical angle). Specifically, the battery cell 100 can be bonded and fixed to the upper surface of the top support section 410 using thermally conductive structural adhesive. The two lateral connecting sections extend downward along the height direction of the battery cell 100 on both sides of the top support section 410 and eventually connect to the bottom plate of the lower housing. The entire weight and working load of the battery cell 100 are borne by the support beam 400 and transferred to the lower housing through the top support section 410 and the lateral connecting sections. This structure stably raises the top support section 410 and the battery cell 100 on it, moving them away from the bottom plate of the lower housing, thereby forming a gap space and reducing damage to the battery cell 100 from ball impacts and scraping at the bottom of the battery pack. The top support section 410, the two lateral connecting sections, and the bottom plate of the lower housing together form a continuous cavity structure. The cavity structure not only reduces the overall weight of the support beam 400, achieving lightweighting, but its cavity shape also significantly enhances the bending stiffness and stability of the support beam 400 when subjected to vertical loads, making the Z-beam a key load-bearing component that integrates multiple functions such as support, lifting, and reinforcement.

[0044] Please see Figures 1 to 3 In an optional embodiment of this utility model, the lateral connection section specifically includes a first side portion 420 and a second side portion 430. One end of the first side portion 420 is connected to the bottom plate of the lower housing, and the other end is connected below the contact area between the top support section 410 and the battery cell 100. Similarly, one end of the second side portion 430 is connected to the bottom plate of the lower housing, and the other end is connected to the end of the top support section 410 away from the battery cell 100. Specifically, a partially heightened section 431 extends upward along the height direction of the battery cell 100 on the second side portion 430. This partially heightened section 431 is parallel to and opposite to the side of the battery cell 100, effectively increasing the lateral structural height of the support beam 400 without significantly increasing weight or material costs, providing a structural basis for the bonding and fixing of the battery cell 100 and side protection.

[0045] Please see Figures 1 to 3 In an optional embodiment of this utility model, the inner wall of the partially raised section 431 (i.e., the wall facing the side of the battery cell 100) is connected and fixed to the side of the battery cell 100 by a high-strength adhesive, such as polyurethane structural adhesive or epoxy resin adhesive. Through continuous surface contact bonding, the battery cell 100 is more firmly constrained within the module frame, strengthening the fixation of the battery cell 100 and greatly enhancing its ability to resist inertial forces in all directions (especially lateral forces) during vehicle operation, particularly under bumpy conditions. This effectively prevents the battery cell 100 from loosening or relative displacement, improving the reliability and durability of the connection.

[0046] Please see Figures 1 to 3In an optional embodiment of this utility model, the locally raised section 431 includes a first protective plate and a second protective plate disposed opposite to each other. The first protective plate serves as an inner sidewall and is bonded to the battery cell 100, while the second protective plate serves as an outer sidewall, extending to and connecting to the bottom plate of the lower housing. The two plates enclose an energy-absorbing cavity 432, which is used to absorb extrusion energy, reduce intrusion into the battery cell 100, and protect the safe use of the battery cell 100. When the side of the module is subjected to extrusion or collision, the locally raised section 431 first buckles inward through the first and / or second protective plates, or undergoes controllable crushing deformation as a whole. Through the plastic deformation and destruction of its structure, it absorbs and dissipates a large amount of impact energy, thereby forming a sacrificial buffer zone. This effectively slows down the intrusion speed and degree of external impact into the internal battery cell 100 body, reducing the risk of short circuit, leakage, or even thermal runaway of the battery cell 100.

[0047] Please see Figures 1 to 3 It should be noted that the support beam 400 is a single, integral structure manufactured using processes such as sheet metal stamping and bending. This integral structure avoids the weaknesses in connection and assembly errors that can occur when assembling multiple parts, ensuring that the support beam 400 exhibits excellent mechanical integrity and consistency when bearing loads. The integrally formed Z-shaped cross-section also gives it high bending stiffness in the vertical direction, effectively resisting deformation caused by the weight of the battery cell 100 and impact loads. Simultaneously, its hollow structure achieves lightweight design. This integral support beam 400, as the core load-bearing skeleton of the module, provides a stable and reliable mounting foundation for the battery cell 100.

[0048] Please see Figures 1 to 3 In an optional embodiment of this utility model, the first protective plate is connected to the top support section 410. A clearance groove 440 is provided at the junction of the first protective plate and the top support section 410, i.e., at the corner where the partially raised section 431 connects to the top support section 410. This clearance groove 440 is a concave arc-shaped notch or bevel naturally formed during sheet metal bending or processed by a specific mold. When the battery cell 100 is placed on the top support section 410, the clearance groove 440 provides necessary assembly clearance space for the bottom corner of the battery cell 100, effectively preventing rigid interference between the sharp bottom corner of the battery cell 100 and the rounded corner produced by the sheet metal bending of the support beam 400. This ensures that the battery cell 100 can be installed smoothly and stress-free, improving assembly reliability and production efficiency.

[0049] Please see Figures 1 to 3In an optional embodiment of this utility model, the joint between the first protective plate and the top support section 410 is fixed to the second protective plate by welding. Specifically, the welding point is located at the connection between the rounded corner of the clearance groove 440 and the inner wall of the second protective plate. The first and second protective plates are welded to form a semi-closed energy-absorbing cavity 432 with openings at both ends. Welding enhances the structural continuity and overall rigidity between the locally raised section 431 and the main body of the support beam 400, avoids complex mechanical connections, and prevents connection failure caused by stress concentration through uniform force distribution. When subjected to lateral compression or severe impact, the load can be effectively transferred from the locally raised section 431 and distributed to the entire support beam 400 and even the module frame, guiding the energy-absorbing cavity 432 to undergo controllable crushing deformation to absorb energy, thereby significantly improving the structural integrity and impact resistance of the entire module structure.

[0050] Please see Figures 1 to 3 In an optional embodiment of this utility model, the battery module structure further includes a reinforcing side plate 500. The partially raised section 431 of the support beam 400 is fixed to the battery cell 100 at the bottom area of ​​the side of the battery cell 100 to achieve lateral reinforcement. The side area above it is further reinforced by the reinforcing side plate 500. Specifically, the reinforcing side plate 500 is set on the side of the outermost battery cell 100 of the module by adhesive bonding, covering and pasting it to the side of the battery cell 100. As a lateral reinforcement structure of the module, it works together with the support beam 400, the battery cell 100, etc., to greatly improve the bending and torsional stiffness of the entire battery module in the horizontal plane, making the module a solid whole, which can better resist various complex stresses generated during transportation, installation and use, prevent the overall structure from deforming, and provide additional protection for the battery cell 100.

[0051] Please see Figures 1 to 3 In one optional embodiment of this invention, the reinforcing side plate 500 comprises an epoxy board, which has excellent insulation, rigidity, and low cost characteristics, further optimizing the module's lightweight, safety, and reliability. In other embodiments, the reinforcing side plate 500 may also be made of high-strength composite material, such as carbon fiber composite material or glass fiber reinforced plastic, which has extremely high specific strength and specific modulus, providing excellent lateral rigidity and impact resistance while significantly reducing weight.

[0052] Please see Figures 1 to 3This utility model also proposes a battery pack, including the battery module structure described in any of the above embodiments, as well as a housing for encapsulating the module structure, high-voltage electrical connectors disposed within the housing, a battery management system, and a thermal management system. The design of this battery module structure enables the battery pack to have excellent resistance to bottom ball impacts and scratches. While simplifying the structure and reducing costs, the internal cold plate 300 is effectively protected, and the battery cells 100 are securely and reliably fixed. The overall rigidity of the module structure is high, thereby significantly improving the overall safety, durability, and reliability of the battery pack.

[0053] Please see Figures 1 to 3 In an optional embodiment of this utility model, when the bottom of the battery pack is impacted, the impact force is first dispersed by the bottom plate of the lower housing, and then absorbed by the elastic deformation of the rebound foam in the buffer layer 200. The rigid support foam provides stable support and prevents excessive displacement of the cold plate 300. The Z-shaped structure and cavity of the support beam 400 provide strong bending support to ensure the high-position stability of the cell 100. Side impacts are preferentially absorbed by the energy-absorbing cavity 432 of the locally heightened section 431 through controllable crushing deformation. At the same time, the reinforced side plate 500 provides overall bending stiffness to prevent overall module instability. The cold plate 300 focuses on cooling, and its good contact with the bottom surface of the cell 100 ensures heat dissipation efficiency. All structural components work together to achieve a high degree of integration of multiple functions such as impact protection, thermal management, cell 100 fixation, and module rigidity reinforcement.

[0054] In summary, the battery module structure and battery pack of this utility model, by supporting the battery cell 100 with the support beam 400, elevate the battery cell 100 to avoid direct contact with the lower casing and cold plate 300, providing protective space and reducing the direct impact of bottom impact on the battery cell 100; the buffer layer 200 effectively absorbs and buffers the impact energy from the bottom, protecting the cold plate 300 from damage; the stacked support pads 210 and buffer pads 220 provide stable support while absorbing impact; the top support section 410 and the lateral connection section form a cavity structure, enhancing the rigidity of the beam structure while reducing... The design features a lightweight construction that provides space for components such as wiring harnesses. The locally raised section 431 increases side protection and provides bonding area, improving the connection stability of the battery cell 100 within the module and reducing vibration and displacement. The energy-absorbing cavity 432 absorbs energy through structural deformation when subjected to lateral pressure, reducing the risk of intrusion into the battery cell 100. The reinforced side plate 500 enhances the overall bending and torsional rigidity of the module, protecting the battery cell 100 from lateral impacts or pressure. The locally raised section 431 is reinforced by welding, strengthening the overall rigidity and connection strength of the support beam 400 and improving structural stability. This invention achieves precise allocation and efficient coordination of functions for each component through the design of the U-shaped support beam 400 structure, the composite buffer layer 200, the bonding and fixing structure between the locally raised section 431 and the battery cell 100, and the installation of the side reinforcement plate. This significantly improves impact resistance, structural rigidity, connection reliability, and overall battery pack safety, while effectively reducing system weight and cost, and solving problems such as cold plate damage, unreliable battery cell fixing, and insufficient module rigidity.

[0055] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0056] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0057] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0058] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0059] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0060] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0061] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

[0062] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0063] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A battery module structure, characterized in that, include: Several battery cells are arranged sequentially along the first direction; A support beam is disposed on the bottom plate of the lower housing and extends along the first direction. The battery cells are arranged sequentially and fixed to the support beam. The support beam is configured to form a gap between the bottom surface of the battery cells and the bottom plate of the lower housing. A cold plate is disposed in the space between the partitions; A buffer layer is disposed between the bottom plate of the lower housing and the cold plate, and the buffer layer supports the cold plate between the battery cell and the bottom plate of the lower housing.

2. The battery module structure according to claim 1, characterized in that, The buffer layer includes a support pad and a buffer pad stacked together. The support pad is fixed to the bottom plate of the lower housing and / or the support beam, and the buffer pad is sandwiched between the support pad and the cold plate.

3. The battery module structure according to claim 1, characterized in that, The supporting beam includes: A top support section, on which the battery cell is disposed; Lateral connection sections extend along the height direction of the battery cell on both sides of the top support section to form the lateral connection sections, which are configured to raise the top support section and the battery cell thereon away from the bottom plate of the lower housing. A cavity structure is formed between the top support section, the side connecting section, and the bottom plate of the lower shell.

4. The battery module structure according to claim 3, characterized in that, The lateral connection segment includes: The first side portion has one end connected to the bottom plate of the lower housing and the other end connected to the end of the top support section that contacts the battery cell; The second side has one end connected to the bottom plate of the lower housing and the other end connected to the end of the top support section away from the battery cell. A partially raised section extends and protrudes along the height direction of the battery cell on the second side, and the partially raised section is arranged opposite to the side of the battery cell.

5. The battery module structure according to claim 4, characterized in that, The inner wall of the locally raised section is connected and fixed to the side of the battery cell by adhesive.

6. The battery module structure according to claim 4, characterized in that, The locally heightened section includes a first protective plate and a second protective plate arranged opposite to each other, with an energy-absorbing cavity formed between the first protective plate and the second protective plate to absorb the extrusion energy and protect the battery cell.

7. The battery module structure according to claim 6, characterized in that, The first protective plate is connected to the top support section, and the joint between the first protective plate and the top support section and the second protective plate is fixed by welding.

8. The battery module structure according to claim 1, characterized in that, The battery module structure also includes a reinforcing side plate, which is disposed on the side of the battery cell and bonded and fixed to the battery cell.

9. The battery module structure according to claim 8, characterized in that, The reinforced side panel includes an epoxy board.

10. A battery pack, characterized in that, Includes the battery module structure as described in any one of claims 1 to 9.

Images