A multi-layer rigid battery system

Abstract

The utility model relates to a kind of multilayer rigid battery systems, including battery system framework, the battery system framework inside installs two or three multiple base battery package system unit;Two adjacent base battery package system units are connected to the upper and lower of middle layer support assembly of framework shape by system unit connecting hole and fastener, the system unit connecting hole of base battery package system unit in bottom layer is fixedly connected rigid connection component by fastener, rigid connection component and battery system framework are welded or fastener integrally;Middle layer support assembly is fixedly installed in battery system framework by fastener by connecting block or support;The utility model can effectively ensure connection reliability, sealing reliability and compactness in the environment of high vibration intensity, can effectively prevent the problems such as box body and other structural member rupture, cell damage, connection loosening and sealing failure.

Description

Technical Field

[0001] This utility model relates to the field of battery systems, specifically a multi-layer rigid battery system. Background Technology

[0002] In the current development of battery system technology, power battery systems for engineering machinery and commercial vehicles adopt a multi-layer battery box bonding and stacking assembly method. Although existing multi-layer stacked battery systems have made some progress in reducing height, they still have limitations. Especially in high vibration environments, it is difficult to simultaneously ensure connection stability, sealing reliability, and structural compactness, which can easily lead to problems such as box cracking, cell damage, loose connections, and sealing failure.

[0003] Currently, the utility model with patent publication number CN222601255U discloses a frame, a housing, a battery swapping device, and a vehicle. The frame is used for the housing and includes a bottom frame and a top frame that are opposite to each other and spaced apart. In the width direction of the frame, the width of the bottom frame is greater than the width of the top frame. The frame encloses a receiving cavity that is suitable for accommodating a battery pack. This utility model reduces the shaking of the battery swapping device.

[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN222601255U effectively prevents battery shaking by setting up a complex frame structure. However, due to its large size, it will greatly encroach on the internal space of construction machinery and commercial vehicles, and is not suitable for use in construction machinery and commercial vehicles. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a multi-layer rigid battery system that can effectively ensure connection reliability, sealing reliability, and structural compactness in high vibration environments, and can effectively prevent problems such as breakage of structural components such as the casing, cell damage, loose connections, and sealing failure.

[0006] To achieve the above objectives, this utility model provides a multi-layer rigid battery system, comprising a battery system frame. Two or more basic battery pack system units are installed inside the battery system frame. Two adjacent basic battery pack system units are connected to the upper and lower parts of a frame-shaped middle-layer support assembly via system unit connection holes and fasteners. The system unit connection holes of the bottom-layer basic battery pack system units are fixedly connected to a rigid connection assembly via fasteners. The rigid connection assembly is welded to the battery system frame or integrated with it using fasteners. The middle-layer support assembly is fixedly installed in the battery system frame via connecting blocks or brackets using fasteners. The top and uppermost basic battery pack system units of the battery system frame are respectively fixedly connected to the top-layer support assembly.

[0007] In addition, the multilayer rigid battery system proposed according to the above embodiments of this utility model may also have the following additional technical features:

[0008] As a further improvement of this utility model, the battery system frame has multiple mounting holes at equal intervals on the vertical beams. The holes are used to connect the top support component and the middle support component. The mounting holes can be open holes or screw holes. The materials of the top support component and the middle support component are high-strength steel or rigid aluminum alloy.

[0009] As a further improvement of this utility model, the basic battery pack system unit includes a cover, a battery pack body, and system unit connection holes. The cover is fixedly installed on the battery pack body. Multiple system unit connection holes are equally spaced on the upper edge of the cover, the upper and lower edges of the battery pack body, and the upper and lower battery packs are connected together through adjacent connection holes to form a rigid connection. The rigid connection can be a fastener connection. The connection holes on the top outer side and the bottom outer side serve as system unit connection holes to fix the basic battery pack system unit.

[0010] As a further improvement of this utility model, the box cover may be made of steel, aluminum alloy or composite material.

[0011] As a further improvement of this utility model, the top support component of the battery pack housing and the battery system frame are both made of steel or aluminum alloy.

[0012] By employing the above-described solution, this utility model possesses at least the following advantages: A simple and compact overall structure is formed by rigid connection components, a middle-layer support component, a top-layer support component, and a battery system frame. This ensures that all connections remain stable and reliable under complex operating conditions such as high vibration intensity, effectively preventing loosening and guaranteeing stable operation of the battery system. During vibration testing, the system maintains normal operation within the specified vibration frequency and acceleration range, without any loosening or damage to any connections. The basic battery pack system units are vertically stacked, eliminating the original battery pack frame. The overall structural strength is provided by the cover, battery pack housing, and external frame, reducing the vertical height of the battery system and facilitating high-energy-density integration within a limited space. For example, in the battery compartment of electric vehicles or construction machinery, this system can effectively utilize vertical space, increasing battery capacity and driving range. The original battery pack frame is eliminated by stacking the top-level support components, basic battery pack system units, and middle-level support components. The overall structural strength is provided by the cover 21, battery pack housing 23, and external frame. The battery system frame and rigid connection components are all connected to each other by bolts, eliminating the need for side welding. This avoids assembly difficulties caused by the height tolerance of the multi-layer battery pack housing stack, and improves assembly efficiency and connection reliability. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of a multi-layer rigid battery system;

[0014] Figure 2 This is a three-dimensional diagram of a basic battery pack system unit of a multi-layer rigid battery system.

[0015] Figure 3 This is a top-view perspective view of a multi-layer rigid battery system.

[0016] In the diagram: 1. Top-level support assembly, 2. Basic battery pack system unit, 21. Cover, 23. Battery pack housing, 24. System unit connection hole, 3. Middle-level support assembly, 5. Battery system frame, 6. Rigid connection assembly. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings, describes a multi-layer rigid battery system according to this invention.

[0018] In Embodiment 1 of this application, as Figures 1 to 3 As shown, this invention discloses a multi-layer rigid battery system, comprising a battery system frame 5. Two or more basic battery pack system units 2 are installed inside the battery system frame 5. Adjacent basic battery pack system units 2 are connected to the upper and lower sides of a frame-shaped middle-layer support component 3 via system unit connection holes 24 and fasteners. The system unit connection holes 24 of the bottom basic battery pack system unit 2 are fixedly connected to a rigid connection component 6 via fasteners. The rigid connection component 6 is welded to the battery system frame 5 or integrated with it via fasteners. The middle-layer support component 3 is fixedly installed in the battery system frame 5 via connecting blocks or brackets and fasteners. The top and uppermost basic battery pack system units 2 of the battery system frame 5 are respectively fixedly connected to the top-layer support component 1. The battery system frame 5 has multiple equally spaced mounting holes in its vertical beams. With the help of these multiple adjustment holes, operators can control the position of the middle-layer support component 3 as needed to accommodate various models of basic battery pack system units 2. The hole is used to connect the top support component 1 and the middle support component 3. The mounting hole can be a smooth hole or a screw hole. The materials of the top support component 1 and the middle support component 3 are high-strength steel or rigid aluminum alloy.

[0019] The utility model patent with announcement number CN222601255U, which describes a frame, housing, battery swapping device, and vehicle (hereinafter referred to as "the patent"), effectively prevents battery shaking by setting up a complex frame structure. However, due to its large size, it greatly occupies the internal space of construction machinery and commercial vehicles, and is not suitable for use in construction machinery and commercial vehicles. In contrast, the present invention uses a rigid connection component 6, a middle support component 3, a top support component 1, and a battery system frame 5 to form a simple and compact overall frame structure. This ensures that the battery system is stable and reliable at all connection points under complex working conditions such as high vibration intensity, effectively preventing loosening and ensuring the stable operation of the battery system.

[0020] This second embodiment is basically the same in structure as the first embodiment, the difference being that, as Figure 2 As shown, the basic battery pack system unit 2 includes a cover 21, a battery pack body 23, and system unit connection holes 24. The cover 21 is fixedly installed on the battery pack body 23. Multiple system unit connection holes are equally spaced on the upper edge of the cover 21, the upper and lower edges of the battery pack body 23. The upper and lower battery packs are connected together through adjacent connection holes to form a rigid connection, which can be a fastener connection. The connection holes on the top outer side and the bottom outer side serve as system unit connection holes 24 to fix the basic battery pack system unit. By eliminating the original steel structure frame connectors, the overall height of the basic battery pack system unit 2 is effectively reduced, making the overall equipment more compact. The battery pack system unit 2, even with only the bottom system unit connection hole 24 fixed, has a vibration intensity no less than the vibration standard.

[0021] To further optimize the working efficiency of this application and ensure sufficient overall strength of the equipment, the top support component 1 of the battery pack housing 23 and the battery system frame 5 are both made of steel or aluminum alloy, and the cover 21 can be made of steel, aluminum alloy or composite material.

[0022] Once a multi-layer rigid battery system is installed, the device can be put into use.

[0023] In summary, this embodiment of the multi-layer rigid battery system comprises a rigid connecting component 6, a middle-layer support component 3, a top-layer support component 1, and a battery system frame 5, forming a simple and compact overall structure. This ensures that the battery system remains stable and reliable under complex operating conditions such as high vibration intensity, effectively preventing loosening and guaranteeing stable operation of the battery system. During vibration testing, the system maintains normal operation within the specified vibration frequency and acceleration range, without any loosening or damage to any connecting parts. The basic battery pack system unit 2 is vertically stacked, eliminating the original battery pack frame. The overall structural strength is provided by the cover 21, the battery pack housing 23, and the external frame, reducing the vertical height of the battery system and facilitating high-energy-density integration within a limited space. For example, in the battery compartment of electric vehicles or construction machinery, this system can effectively utilize vertical space to increase the battery system's capacity and driving range. The top-level support component 1, the basic battery pack system unit 2, the middle-level support component 3, the battery system frame 5, and the rigid connection component 6 are all connected to each other by bolts, eliminating the need for side welding. This avoids assembly difficulties caused by the height tolerance of the multi-layer battery pack housing and improves assembly efficiency and connection reliability.

[0024] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A multilayer rigid battery system, comprising a battery system frame (5), characterized in that, Two or more basic battery pack system units (2) are installed inside the battery system frame (5); two adjacent basic battery pack system units (2) are connected to the upper and lower parts of the frame-shaped middle support component (3) through system unit connection holes (24) and fasteners; the system unit connection holes (24) of the bottom basic battery pack system unit (2) are fixedly connected to the rigid connection component (6) through fasteners; the rigid connection component (6) is welded to the battery system frame (5) or connected to it by fasteners; the middle support component (3) is fixedly installed in the battery system frame (5) by fasteners through connecting blocks or brackets; the top and uppermost basic battery pack system units (2) of the battery system frame (5) are respectively fixedly connected to the top support component (1).

2. The multilayer rigid battery system according to claim 1, characterized in that, The battery system frame (5) has multiple mounting holes at equal intervals on its vertical beams. The mounting holes can be open holes or screw holes. The top support component (1) and the middle support component (3) are made of high-strength steel or rigid aluminum alloy.

3. The multilayer rigid battery system according to claim 2, characterized in that, The basic battery pack system unit (2) includes a cover (21), a battery pack body (23), and system unit connection holes (24). The cover (21) is fixedly installed on the battery pack body (23). Multiple system unit connection holes are opened at equal intervals on the upper edge of the cover (21), the upper and lower edges of the battery pack body (23). The upper and lower battery packs are connected together through adjacent connection holes to form a rigid connection. The connection holes on the top outer side and the bottom outer side serve as system unit connection holes (24) to fix the basic battery pack system unit (2).

4. A multilayer rigid battery system according to claim 3, characterized in that, The lid (21) may be made of steel, aluminum alloy or composite material.

5. A multilayer rigid battery system according to claim 4, characterized in that, The top support assembly (1) of the battery pack housing (23) and the battery system frame (5) are both made of steel or aluminum alloy.

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