Compact battery system

Abstract

The utility model relates to the technical field of power batteries, in particular to a compact battery system which comprises a box cover and a layered battery pack arranged below the box cover, and the layered battery pack comprises an aluminum extrusion tailor-welded box body and a battery module; the aluminum extrusion tailor-welded box body is of a hollow structure with an opening in the upper end, the battery module is arranged in the aluminum extrusion tailor-welded box body, and the box cover is arranged above the aluminum extrusion tailor-welded box body and used for covering the opening in the upper end of the aluminum extrusion tailor-welded box body. The battery system is an aluminum extrusion tailor-welded battery system with high volume utilization rate and high strength. By means of aluminum extrusion tailor welding and bolt connection, a battery pack which needs to be installed through a battery cluster frame traditionally is converted into a whole. Compared with a conventional battery pack, the battery system has the advantages that the height is reduced by 21%, the electric quantity is increased by 33%, and the volume and the energy density are greatly improved in the same space. According to the utility model, the technical problems of low volume utilization rate, limited electric quantity reserve and low strength of the existing battery system can be solved.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a compact battery system. Background Technology

[0002] Battery systems used in mining trucks and heavy-duty trucks typically employ a rear-mounted design, placed behind the cab. These systems require high battery capacity and necessitate maximizing battery capacity within limited installation space to extend the vehicle's range. Furthermore, the rugged terrain of mining trucks necessitates even higher battery pack strength requirements, generally exceeding standard strength by more than twice.

[0003] Conventional battery systems typically use a cluster-like structure, such as... Figure 1 As shown, the battery packs are mounted on the battery cluster rack, and then different battery packs are connected via inter-rack wiring harnesses. Due to the complex design of the battery cluster rack, the battery system has low volume utilization and limited energy storage. Furthermore, the battery cluster rack has an open structure with low strength, which cannot meet the strength requirements of mining trucks and heavy-duty trucks for battery systems. Utility Model Content

[0004] The purpose of this invention is to provide a compact battery system that can solve the technical problems of low volume utilization, limited energy storage, and low strength of existing battery systems.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a compact battery system, including a cover and a layered battery pack disposed below the cover. The layered battery pack includes an aluminum extruded and welded housing and battery modules.

[0007] The aluminum extrusion welded box is a hollow structure with an opening at the top. The battery module is installed inside the aluminum extrusion welded box, and the box cover is located above the aluminum extrusion welded box to cover the opening at the top of the aluminum extrusion welded box.

[0008] As a preferred embodiment, the layered battery pack is multi-layered and stacked from top to bottom, with the bottom plate of the upper aluminum extrusion welded box serving as the cover of the lower aluminum extrusion welded box.

[0009] As a preferred embodiment, the layered battery pack further includes a sealing ring, which is disposed at the upper opening of the aluminum extrusion welded housing.

[0010] As a preferred embodiment, the layered battery pack further includes a liquid cooling plate disposed at the bottom of the aluminum extrusion welded housing.

[0011] As a preferred solution, the layered battery pack further comprises a connector, which is arranged at the side of the aluminum extrusion welded box.

[0012] As a preferred solution, the layered battery pack further comprises a water nozzle, which is arranged at the side of the aluminum extrusion welded box, at the same side as the connector.

[0013] The utility model discloses a compact battery system, can solve the existing battery system volume utilization rate is lower, and the technical problem of limited electric quantity reserve, low strength.

[0014] The utility model discloses a compact battery system, can solve the existing battery system volume utilization rate is lower, and the technical problem of limited electric quantity reserve, low strength.

[0015] 1, relative to traditional cluster frame form, the utility model discloses an aluminum extrusion welded high volume utilization rate high strength commercial vehicle battery system height reduces 21% or more, and the electric quantity increases 33% or more.

[0016] 2, the utility model discloses an aluminum extrusion welded high volume utilization rate high strength commercial vehicle battery system, and the battery pack of traditional need battery cluster frame installation is converted into a whole through aluminum extrusion welding and bolt connection.

[0017] 3, the utility model cancels the box cover of other layer battery pack except top layer, can effectively reduce cost, reduce the volume of battery pack, improve energy density. DRAWINGS DESCRIPTION

[0018] Figure 1 It is the three-dimensional schematic view of the fixed battery system of original cluster frame mode.

[0019] Figure 2 It is the three-dimensional schematic view of the battery system of the utility model.

[0020] Figure 3 It is the explosion schematic view of the battery system of the utility model.

[0021] MARKED DESCRIPTION OF DRAWINGS:

[0022] Box cover 1, aluminum extrusion welded box 2, battery module 3, sealing ring 4, liquid cooling plate 5, connector 6, water nozzle 7, bolt 8, battery cluster frame 9. CONCRETE IMPLEMENTATION

[0023] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the following will be further explained by specific embodiments and through the specific embodiments of the utility model. It can be understood that the specific embodiments described here are only used to explain the utility model, not to limit the utility model. In addition, it needs to be explained that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1 The diagram shows a three-dimensional representation of a conventional battery system using a battery rack mounting method. Conventional battery systems typically employ a rack-like mounting system, where battery packs are installed on the racks and then connected to each other via inter-pack wiring harnesses.

[0027] This utility model relates to a compact battery system, specifically a high-volume-utilization, high-strength commercial vehicle battery system using aluminum extrusion welding. By utilizing aluminum extrusion welding and bolt connections, the traditional battery pack requiring battery cluster racks is transformed into a single unit. With the same installation method, this battery system achieves a 21% reduction in height and a 33% increase in capacity compared to conventional battery packs within the same space, significantly improving both volume and energy density.

[0028] The present invention provides a compact battery system, including a cover 1 and a layered battery pack disposed below the cover 1.

[0029] The layered battery pack includes an aluminum extruded and welded housing 2, a battery module 3, a sealing ring 4, a liquid cooling plate 5, a connector 6, and a water tap 7.

[0030] The aluminum extrusion welded box 2 is a hollow structure with an opening at the top. The battery module 3 is disposed inside the aluminum extrusion welded box 2. The box cover 1 is disposed above the aluminum extrusion welded box 2 and is used to cover the upper opening of the aluminum extrusion welded box 2.

[0031] The layered battery pack consists of multiple layers stacked from top to bottom, with the bottom plate of the upper aluminum extrusion welded housing 2 serving as the cover 1 of the lower aluminum extrusion welded housing 2. For example... Figure 2 , 3 As shown, this embodiment uses a two-layer battery pack as an example.

[0032] The sealing ring 4 is located at the upper opening of the aluminum extrusion welded housing 2. The liquid cooling plate 5 is located at the bottom of the aluminum extrusion welded housing 2. The connector 6 is located on the side of the aluminum extrusion welded housing 2. The water tap 7 is located on the side of the aluminum extrusion welded housing 2, on the same side as the connector 6.

[0033] This invention proposes a high-volume-utilization, high-strength commercial vehicle battery system using aluminum extrusion welding. Through aluminum extrusion welding and bolt connections, the traditional battery pack requiring battery cluster racks is transformed into a single unit. The height is reduced by over 21%, and the capacity is increased by over 33%. The volumetric energy density is significantly improved.

[0034] The battery system used in this invention is primarily designed for applications requiring high strength and a small size for battery packs. This system employs a tall housing, thickened extruded aluminum beams, and bolted connections between the housings to form a high-strength system. The system includes an integrated liquid-cooled housing, modules, connectors, a housing cover, and other structural and electrical components. Each housing layer is stacked in a Z-axis manner, with the bottom plate of the upper housing serving as the cover for the lower housing. This elimination of the cover reduces installation space and weight, while the bottom liquid-cooled plate of the upper housing also functions as the top liquid-cooled plate of the lower housing, allowing for better heat dissipation from the battery cells.

[0035] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A compact battery system, characterized in that: Includes a box cover (1) and a layered battery pack disposed below the box cover (1), the layered battery pack including an aluminum extrusion welded box body (2) and a battery module (3); The aluminum extrusion welded box (2) is a hollow structure with an opening at the top. The battery module (3) is set inside the aluminum extrusion welded box (2). The box cover (1) is set above the aluminum extrusion welded box (2) to cover the opening at the top of the aluminum extrusion welded box (2).

2. The compact battery system according to claim 1, characterized in that: The layered battery pack is multi-layered and stacked from top to bottom. The bottom plate of the upper aluminum extrusion welded box (2) serves as the box cover (1) of the lower aluminum extrusion welded box (2).

3. A compact battery system according to claim 1, characterized in that: The layered battery pack also includes a sealing ring (4), which is disposed at the upper opening of the aluminum extrusion welded box (2).

4. A compact battery system according to claim 1, characterized in that: The layered battery pack also includes a liquid cooling plate (5), which is disposed at the bottom of the aluminum extrusion welded box (2).

5. A compact battery system according to any one of claims 1 to 4, characterized in that: The layered battery pack also includes a connector (6), which is disposed on the side of the aluminum extrusion welded housing (2).

6. A compact battery system according to claim 5, characterized in that: The layered battery pack also includes a water nozzle (7), which is located on the side of the aluminum extrusion welded housing (2), on the same side as the connector (6).

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