Flexible variable platform power battery pack system

Abstract

The invention discloses a flexible variable platform power battery pack system which comprises an upper shell and a lower shell, the lower shell is of a frame type structure and comprises a frame and a middle bearing beam. With the length direction of the vehicle body as the Y direction and the width direction of the vehicle body as the X direction, the frame comprises a Y-direction frame body and an X-direction frame body; a Y-direction guide rail is arranged on the Y-direction frame body, a plurality of lifting lug supports are arranged on the Y-direction guide rail in the Y direction, each lifting lug support comprises a sliding part and a connecting part, the sliding parts are connected with the Y-direction guide rail in a sliding mode, the connecting parts are used for being connected with a vehicle frame, and therefore a Y-direction variable structure is formed; one or more interface mounting positions are arranged on the X-direction frame body along the X direction, and the interface mounting positions are used for mounting interface modules of the power battery pack, so that an X-direction variable structure is formed. The platform can be matched with vehicle bodies of various vehicle types, so that the platform can be changed, and the platform is suitable for frames of different vehicle types. According to the method, multiple purposes are achieved through one mold, repeated development is not needed, the development period and cost are saved, and the platformization requirement is met to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and particularly to a flexible variable platform power battery pack system. Background Art

[0002] With the booming development of the new energy vehicle industry, the market share is increasing year by year, and the requirements for lightweight and modularization are also getting higher and higher. Among them, lightweight determines the cruising range, and modularization determines the development cost and cycle. Moreover, the battery system accounts for about 30% of the vehicle weight and about 30% of the cost.

[0003] The existing power battery pack systems mainly consist of a housing and battery modules. The housing is mostly made by sheet metal welding and low-pressure casting, and then the housing is connected to the vehicle frame through lifting lug brackets. Due to the large space of the power battery system and the different vehicle model platforms of the battery pack housing, it is difficult to have a good matching connection between the lifting lug brackets of the battery pack housing and the vehicle body. Especially for different vehicle model platforms, it is necessary to repeatedly develop adaptable power battery packs and adjust the vehicle body brackets, which cannot achieve modular selection, thus increasing repetitive work, being unfavorable for output and input, and having high costs and long cycles.

[0004] Moreover, the interfaces of the existing power battery packs, such as high-voltage and low-voltage interfaces, etc., are also for exclusive production and there is no unified design concept, which is not conducive to modular pre-installation sorting.

[0005] After research and development by the applicant, a flexible variable platform power battery pack system is proposed, which realizes multiple uses with one mold, eliminates the need for repeated development, saves the development cycle and cost, maximizes the fulfillment of platform requirements, and solves the problem of repeated design of the power battery and the vehicle body structure. Summary of the Invention

[0006] The purpose of the present invention is to provide a flexible variable platform power battery pack system.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions: A flexible variable platform power battery pack system includes an upper housing and a lower housing, and an accommodation cavity for placing battery modules is formed between the upper housing and the lower housing; The lower housing is of a frame structure, including a frame and load-bearing beams arranged in the middle; taking the length direction of the vehicle body as the Y direction and the width direction of the vehicle body as the X direction, the frame includes a Y-direction frame and an X-direction frame; Y-direction guide rails are provided on the Y-direction frame, and a plurality of lifting lug brackets are arranged along the Y direction on the Y-direction guide rails. The lifting lug brackets include a sliding part and a connecting part, wherein the sliding part is slidably connected to the Y-direction guide rails, and the connecting part is used for connecting to the vehicle frame, thereby forming a Y-direction variable structure; One or more interface installation positions are arranged along the X direction on the X-direction frame, and the interface installation positions are used for installing interface modules of the power battery pack, thereby forming an X-direction variable structure.

[0008] Further, the Y-direction guide rail is a dovetail groove type guide rail, and the sliding part of the lug bracket is a matching dovetail slider.

[0009] Further, the connecting part of the lug bracket forms a connecting surface on its upper side, and a connecting hole is provided on the connecting surface. The connecting hole is used for installing a connecting piece to realize the connection with the vehicle frame.

[0010] Further, the sliding part and the connecting part of the lug bracket are an integrally formed structure.

[0011] Further, the interface installation positions include a low-voltage communication port installation position, a charging high-voltage interface installation position, a discharging high-voltage interface installation position, and a fuse installation position.

[0012] Further, the X-direction frame body is a panel type structure.

[0013] Further, the frame is processed from profiles.

[0014] Advantages of the present invention: The present invention adopts a platform-based design scheme. Among them, the Y-direction variable structure design can adjust the battery pack lug bracket accordingly to match different vehicle frames and fixed installation points, realizing the Y-direction adjustability of the whole vehicle, reducing the repeated design and repeated development restricted by the platform vehicle model structure, reducing the development cost and cycle, realizing the efficiency improvement, and opening up ideas for the infinite expansion of subsequent products; among them, the X-direction variable structure design realizes the X-direction variability of the battery pack through the modular assembly of the front panel (integrating the high-voltage and low-voltage connectors of the battery pack into the X-direction frame) and the variable length (selecting different lengths of the X-direction frame according to the X-direction length of the designed battery pack to achieve variable length).

[0015] Through the above functions, the present invention completes the matching with the bodies of various vehicle models, thereby realizing a variable platform and adapting to different vehicle model frames.

[0016] 2. The Y-direction guide rail of the present invention is a dovetail groove type guide rail, and the sliding part of the lug bracket is a matching dovetail slider. Through the buckle type sliding design, not only the connection is stable, but also the lug bracket can be moved parallelly to meet the different requirements of different vehicle model platforms due to different fixed installation points and the like. Description of the Drawings

[0017] Figure 1 is the explosion schematic diagram of the present invention; Figure 2 is the schematic diagram of the X-direction variable structure of the present invention; Figure 3 is the schematic diagram of the Y-direction variable structure of the present invention; Figure 4 is the installation comparison diagram of the present invention.

[0018] The accompanying drawings are only for illustrative purposes and should not be construed as limiting the present patent; for better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] As Figures 1 to 4 shown, this embodiment provides a flexible variable platform power battery pack system, including an upper housing 11 and a lower housing 10. An accommodation cavity for placing battery modules is formed between the upper housing 11 and the lower housing 10.

[0021] The lower housing 10 is a frame structure, including a frame and load-bearing beams arranged in the middle; taking the length direction of the vehicle body as the Y direction and the width direction of the vehicle body as the X direction, the frame includes a Y-direction frame body and an X-direction frame body.

[0022] Y-direction guide rails 12 are provided on the Y-direction frame body, and a plurality of lug brackets are arranged along the Y direction on the Y-direction guide rails 12. Specifically in this embodiment, it includes a lug bracket 5, a lug bracket 6, a lug bracket 7, a lug bracket 8 and a lug bracket 9.

[0023] Each lug bracket includes a sliding part 13 and a connecting part 14. Among them, the sliding part 13 is slidably connected to the Y-direction guide rail 12, and the connecting part 14 is used to connect to the vehicle frame 15, thereby forming a Y-direction variable structure; In this embodiment, the Y-direction guide rail 12 is a dovetail groove type guide rail, and the sliding part 13 of the lug bracket is a matching dovetail slider. The two cooperate to form a snap-type sliding design, which not only has stable connection, but also can realize the parallel movement of the lug bracket to meet the different requirements of different vehicle models due to different fixed installation points and the like.

[0024] In this embodiment, the connecting part 14 of the lug bracket forms a connecting surface on its upper side, and a connecting hole is provided on the connecting surface. The connecting hole is used to install a connecting piece to realize the connection with the vehicle frame.

[0025] To ensure the connection strength, the sliding part 13 and the connecting part 14 of the lug bracket are integrally formed structures.

[0026] A plurality of interface installation positions are provided along the X direction on the X-direction frame body. The interface installation positions are used to install the interface module of the power battery pack, thereby forming an X-direction variable structure.

[0027] Specifically in this embodiment, the interface installation positions include a low-voltage communication port installation position, a charging high-voltage interface installation position, a discharging high-voltage interface installation position, and a fuse installation position. The low-voltage communication port installation position is used to install the low-voltage communication port 1, the charging high-voltage interface installation position is used to install the charging high-voltage interface 2, the discharging high-voltage interface installation position is used to install the discharging high-voltage interface 3, and the fuse installation position is used to install the fuse (MSD) 4.

[0028] To facilitate the opening of the interface installation positions on the X-direction frame, the X-direction frame is of a panel structure.

[0029] To ensure the bearing strength and the layout of the Y-direction variable structure and the X-direction variable structure, the frame is made of processed profiles.

[0030] The present invention adopts a platform-based design scheme. In the Y-direction variable structure design, according to different vehicle frames and fixed installation points, the battery pack lifting lug brackets can be adjusted accordingly to match them, realizing the Y-direction adjustability of the whole vehicle, reducing repeated design and development due to the structural limitations of platform models, reducing the development cost and cycle, and achieving efficiency improvement, opening up ideas for the infinite expansion of subsequent products; in the X-direction variable structure design, through the modular assembly of the front panel (integrating the high-voltage and low-voltage connectors of the battery pack into the X-direction frame) and the variable length (selecting different lengths of the X-direction frame according to the X-direction length of the designed battery pack to achieve variable length), the battery pack is variable in the X-direction.

[0031] Through the above functions, the present invention finally realizes the conversion of the whole package into a variable platform to adapt to different vehicle frame models.

[0032] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be modified or equivalently replaced, and any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

[0033] If terms such as "first" and "second" are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Without additional declaration, the above terms have no special meaning.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A flexible variable platform power battery pack system, characterized in that: It includes an upper housing and a lower housing, and an accommodation cavity for placing a battery module is formed between the upper housing and the lower housing; The lower housing is of a frame structure and includes a frame and load-bearing beams arranged in the middle; taking the length direction of the vehicle body as the Y direction and the width direction of the vehicle body as the X direction, the frame includes a Y-direction frame body and an X-direction frame body; The Y-direction frame body is provided with Y-direction guide rails, and a plurality of lug brackets are arranged along the Y direction on the Y-direction guide rails. The lug brackets include a sliding part and a connecting part, wherein the sliding part is slidably connected to the Y-direction guide rails, and the connecting part is used for connecting to the vehicle frame, thereby forming a Y-direction variable structure; One or more interface mounting positions are arranged along the X direction on the X-direction frame body, and the interface mounting positions are used for mounting interface modules of a power battery pack, thereby forming an X-direction variable structure.

2. The flexible variable platform power battery pack system according to claim 1, wherein: The Y-direction guide rails are dovetail groove type guide rails, and the sliding parts of the lug brackets are matching dovetail type sliders.

3. The flexible variable platform power battery pack system according to claim 1, characterized in that: The connecting part of the lug bracket forms a connecting surface on its upper side, and connecting holes are arranged on the connecting surface. The connecting holes are used for installing connecting pieces to realize the connection with the vehicle frame.

4. The flexible variable platform power battery pack system according to claim 1, characterized in that: The sliding part and the connecting part of the lug bracket are of an integrally formed structure.

5. The flexible variable platform power battery pack system according to claim 1, wherein: The interface mounting positions include a low-voltage communication port mounting position, a charging high-voltage interface mounting position, a discharging high-voltage interface mounting position, and a fuse mounting position.

6. The flexible variable platform power battery pack system according to claim 1, characterized in that: The X-direction frame body is of a panel type structure.

7. The flexible variable platform power battery pack system according to any one of claims 1-6, characterized in that: The frame is processed from profiles.

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